index,input,output
4109,"Date: 2012-06
Topic: Selling another batch of 40 ICARUS - sold out
### Original post:
Those Icarus are batch 3, tested for several weeks by me. mostly test with cgminer rig development, use OpenWrt router as host.I will take orders from tomorrow, Wednesday, May 23 5:00AM UTC+8 (don't send email before this time) ---- until all 40 are sold.Price: 480USD + shipping cost.Package content: Icarus, usb cable, power adapter or power wireAll package will send by EMS (<link> time we only accept BTC. after I receive order email I will send a new btc address to you. then after i receice the btc, I will ship your package immediately.Orders take by email <truncated> please add [ICARUS] to the subject. there is no confirm email. I will send you one email after I get the EMS track NO.(means packages already sent out, shipping from Beijing/China with EMS). please write those information in email:1. How many Icarus you want.2. You want power adapter or power wire. I advise you using your own ATX power if you order more then 2 Icarus.3. Address detail: name: company(optional): address: city: province: country: ZIP: TEL:More Icarus info please check:<link><link>

### Reply 1:
wow!Now here is all sold out , anyone interested in ICArus boards should visit this topic:<link> still some ICA available there.

### Reply 2:
Another 10 Icarus.

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    ""hardware_name"": ""cgminer rig"",
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  },
  {
    ""hardware_name"": ""OpenWrt router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb cable"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""power adapter"",
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  },
  {
    ""hardware_name"": ""power wire"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATX power"",
    ""hardware_is_owned"": false
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]"
11208,"Date: 2022-09
Topic: Advice -Adding additional 6 pin PCIE outputs on a PC modular Power Supply?
### Original post:
Hi AllI have a few modular/semi modular PC psu's and was thinking of using the to pwer some S9 miners with 2 cards. Most of what i have are 1000w or higher.They will be worthless selling so might be better put to use on some S9s powered with2 cards, so i would need x7 ouputs all together.I think i could use an existing hard wired PCIE (6 pin or not) to power the control board.Then on the dedicated high amp PCIE modular ouputs could i not solder on connections and 'share' the load so x2 on each output?I have only seen x8 to x2 PCIE cables so could i not just splice in and solder another?If this works i could do a few more miers in thsi set up as it would be low power and quite when set to 700/800w.Anyone done this or got an opinion on it?The PSU's will either go to waste tbh.Pics attached.<link>

### Reply 1:
@NotFuzzyWarmYes i will be running only 2 boards @ 700w or 800w.Is that why 'common rail' modular PSUs are so expensive?The only PSUs i can see that have enough outputs (X7) are the EVGA ones and they are silly money, i'm surprised that nobody has found a decent PSU and 'modded' them for more outputs tbh.....I just can't find makes that suffice apart from that brand?I think if i open it i can see rails and go from there, 3 on each for the hash boards and an existing 12v ouput for the control board.Thanks for the advice.

### Reply 2:
Looks like the +12v are seperate rails and GND/-12v shared.I will just add an extra pin to each double 8pin >x2 6pin.So i will have a set of two 8pin >x3 6 pins.Current will be approx 800/12=66.67aIs this correct?<link>

### Reply 3:
To be honest, modular plug PSU's all have 1 major problem: They are pushing the maximum current rating through the contacts and generally have only 18ga wires between the PSU and PCIe plugs.Ok, that's 2 major problems...That said, since you are talking about running at reduced power it may not be an issue, just periodically check to see how warm the PSU connectors get. Yes, I've had a few rather spectacularly fry over the years from when I used them to power s3's & s5's...Other thing to keep in mind is that particular PSU has 2 independent output rails. DO NOT connect power from the 2 different rails to 1 hash board! They will be shorted together and fight each other.

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12483,"Date: 2013-07
Topic: Please Help: Mining with both cores of 5970 with cgminer?
### Original post:
Hi, I'm having trouble setting up a 5970 and mining with cgminer The rig is running Linux (Xubuntu) and the 5970 is the only card ( I've followed this guide which has always worked with my other setups.)When I run cgminer -n from the terminal emulator on the desktop I get the <truncated> -nCL Platform 0 vendor: Advanced Micro Devices, Inc. CL Platform 0 name: AMD Accelerated Parallel Processing CL Platform 0 version: OpenCL 1.1 AMD-APP-SDK-v2.5 (793.1) Platform 0 devices: 1 0 Cypress ADL found more devices than opencl! There is possibly at least one GPU that doesn't support OpenCL Use the gpu map feature to reliably map OpenCL to ADL WARNING: Number of OpenCL and ADL devices did not match! Hardware monitoring may NOT match up with devices! GPU 0 ATI Radeon HD 5900 Series hardware monitoring enabled 1 GPU devices max detected Seems to me, cgminer is not recognizing both cores of the 5970.(When I mine with cgminer from the terminal emulator on the Desktop, it's mining with only one core of the 5970)Interestingly, when I run the same command from a SSH terminal it gives me:Code:./cgminer -nCL Platform 0 vendor: Advanced Micro Devices, Inc. CL Platform 0 name: AMD Accelerated Parallel <rest of post truncated>

### Reply 1:
Do you have the newest drivers?

### Reply 2:
Usual instructions for when people DONT read the readme.Reconfigure xorg for all devices, start x and export the DISPLAY variable before starting cgminer.

### Reply 3:
I just find it so weird how people dont read something that specifically says ""READ ME!""

### Reply 4:
Ahh, thanks guys I actually was exporting the DISPLAY variable in my mining startup script but I'd stupidly disabled this while installing/testing the card. That seems to have solved that problem! Unfortunately this led me on to a new issue: The Xubuntu computer loses power very quickly when I start mining on the 5970 with anything above intensity 1, but it mines fine (intensity 11) when installed in a different windows machine...When the linux comp powers off, it's without warning I have to wait a little and toggle the PSU switch before turning it on again. Both PC's have adequate PSU's (760W) and the 5790 is the only card being used. So it has me puzzled. Why would mining cause the linux machine to quickly shut off? Temps on the fan never get a chance to hit 80 before the power cuts off.I will start a new thread on this if it comes to me getting completely stuck (I can try a 7870 in the linux computer and see if it has the same problem), but I hoped someone may have a good idea why this is happening? ATI drivers are 11.11Thank you very much for ideas on this one and happy hashing!

### Reply 5:
Last problem now appears fixed after replacing PSU. Thanks again for the help!

### Reply 6:
Hi ckolivas,I read the readme, but I may be to ""slow"" to understand. I would definitely appreciate your help.I'm getting the same error. I triedsudo aticonfig --adapter=0,1 --initialI also have the following lines in my shell file to start cgminerexport DISPLAY=:0export <truncated> <truncated> I'm missing?

### Reply 7:
I realize I'm having issues with X server to start. So guess I need to fix that somehow.

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23073,"Date: 2019-09
Topic: ASIC Not working!!! HELP
### Original post:
An ASIC is an Application Specific Integrated Circuit, eg the chips used in a miner. I take it your MINER is not working and we are supposed to just check our crystal ball or guess what kind of miner it is? Try giving some useful information about it such <truncated> new or used?

### Reply 1:
a 17 second video is worthless.how about a guihow about api logshow about make and model?looks like an innosiliconlooks like it needs 2 psu'sis it this miner a6 or a6+

### Reply 2:
hey guys I bought AladdinMiner T1 and a psu but now the psu is not working, so I bought new ""bitmain APW3++"" and it was working fine the next day I increase the performance of the asic and it switched off now I can't turn it on!!!here is the video:<link> lights are not working.no ip address.fans starts and strops working.HELP

### Reply 3:
He clearly edited the post after you guys have commented, anyhow , this is the miner he is talking about I guess.<link> it does look like an Inno gear with a bit of modification, in that link they clearly saywhich means phill is right, you need at least two PSUs, each must be 1400w minimum , and according to the video, it does look like he got 2 PSUs connected, the miner's fan do spin for a while and then stop , and you saidWhich means you tried to overclock the miner, you either burned the miner or one of the PSUs, does it show on the network ?? can you access the user interface? please post more details.

### Reply 4:
Do note that the OP has not made any mention of trying to contact the distributor or manufacturer of this knock-off miner. That of course should be the very first thing the OP should have done...Nor have they posted anything else re what has been said so far.

### Reply 5:
He needs to know it's a knock-off in the first place, and honestly if the gear does 32th at 2800w as promised-- it does not matter what name they put on it, as for contacting the manufacturer, honestly this is usually the last thing I personally do simply because1-The support at these Chinese websites is terrible, had a ton of issues with my gears, most were solved by trial and error or from information I got online (mostly on this very forum) , while the manufacturer will give only give you the abc of trouble shooting only.2-In many places, the shipping cost for returning the miner back to china is unreasonable, to the extent that some people rather order new hash board/control board or a PSU than having to pay that much for shipping or wait for months to get their replacement.I think if OP provides enough information and kernel log, someone will be able to give him the solution for this problem without the need for a crystal ball.

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    ""hardware_name"": ""innosilicon"",
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    ""hardware_name"": ""AladdinMiner T1"",
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    ""hardware_name"": ""bitmain APW3++"",
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    ""hardware_name"": ""PSUs"",
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19054,"Date: 2014-03
Topic: USB Block Erupter showing up as generic USB Device instead of ""Port"", won't mine
### Original post:
I've been mining with two USB Block Erupter Sapphires without issue for at least a week now, properly cooled. Today, I've been messing around with things trying to get my Antminer U2 up and running and must've done something that now causes one of my erupters to show up under Device Manager as a usb device instead of under ""Ports"". When I try to mine with it, it just sits in standby doing nothing. However, if I plug it into my Win 7 machine it comes up normally under ""Ports"" instead of ""Universal Serial Bus Devices"" but I don't have an ethernet to that box to test if it will mine. I'm not sure what exactly is going on with this stick. Is it fried?

### Reply 1:
Maybe you installed a WinUSB driver?

### Reply 2:
Is the problem on a windows xp machine? This may be a device identifier issue. I've never seen it with 3 devices, but I suppose it is possible. There is a fix posted in these forums somewhere and if I have time to dig it up for you I will, but if you keep restarting and plugging it back in to different ports it may eventually pick up properly. Windows XP doesn't handle duplicate usb devices very well.

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    ""hardware_name"": ""USB Block Erupter Sapphire"",
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    ""hardware_name"": ""Antminer U2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Win 7 machine"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Windows XP machine"",
    ""hardware_is_owned"": false
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]"
19099,"Date: 2014-03
Topic: Set up a Stratum Proxy server for multiple miners?
### Original post:
Hello all,I want to setup a stratum proxy server to that I can point all of my miners to one server, and point to proxy server to a pool. This will give me the ability to switch from pool to pool.So far I found this url: <link> I got it all installed (linux), but the hashrate just will not come up on the pool I am pointing the proxy to. I do not get any errors on the proxy or miner server.1) Do I use the right software for this?2) If not, what software is there available out there?Thanks!

### Reply 1:
Nobody?

### Reply 2:
ok what miners do you have ?

### Reply 3:
Did you ever get this figured out? I am trying to do the same thing...

### Reply 4:
Hi nopesorry

### Reply 5:
Hi,If you still have this problem try this out: <link> worked for my 7 Ants.

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    ""hardware_name"": ""proxy server"",
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    ""hardware_name"": ""miner server"",
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    ""hardware_name"": ""7 Ants"",
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9265,"Date: 2015-08
Topic: A little more proof the Cloudthink miner is fake... Shilled reddit accounts
### Original post:
How is this site still a thing? Has there not already been extensive proof uncovered that Cloudthink is a scam? I haven't talked to anyone within the Bitcoin community that has regarded as anything other than a scam.

### Reply 1:
Has anyone from Manchester walked to their supposed office? It wouldn't take much effort to provide verifiable evidence that this is a scam.

### Reply 2:
All I want to add is shame on any of the upstanding members that took on their Sig campaign and contributed to anyone getting taken advantage of. Betrayed by greed once again. I feel bad for anyone inexperienced that fell for this scam, it may have been obvious to most of us, but it was slightly less poorly planned out than many others.

### Reply 3:
Yes<link>

### Reply 4:
What about the dollar a day whores who signed up for the ""free"" packages and incessantly bumped this thread?<link> was plenty to be suspicious about when they signed up in the middle of June.

",[]
12145,"Date: 2013-01
Topic: GPU mining driver problem fix
### Original post:
I am a bit slow you guys probably know this, but had problem running OclHashcat-plus on windows complained about drivers not being 12.8. Even if I uninstall all AMD soft and run Atiman + Cleensveeper did not fix this but Driver Fusion I REALLY recommend this program even if there are some bugs Uninstall all AMD software reboot, run Driver Fusion select AMD remove all, check Driver Fusion again so all is gone install new AMD driver sorry if this is well known Cg Miner runs really smooth now whit clean driver /Testit

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    ""hardware_name"": ""OclHashcat-plus"",
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    ""hardware_name"": ""AMD software"",
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  },
  {
    ""hardware_name"": ""Atiman"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""Cleensveeper"",
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    ""hardware_name"": ""Driver Fusion"",
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    ""hardware_name"": ""AMD driver"",
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    ""hardware_name"": ""Cg Miner"",
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4600,"Date: 2013-03
Topic: [VIDEO] Butterfly Labs (BFL) Bitforce SC ASIC Test
### Original post:
Saw this on unofficial IRC. I'll let you guys pick it apart. <link> you embed on here? Is it that flash tag?!

### Reply 1:
Great. They are now in the prototype stage.

### Reply 2:
No hashing. Just testing, useless video.

### Reply 3:
Yeah, a couple million hashes on testnet or something would be more than fair, shouldn't take that long to do it. This video didn't show ANYTHING of substance.

### Reply 4:
What component can draw 42W at idle? I think they should provide an ATX PSU power supply converter where many standard 12V connectors can be used

### Reply 5:
<truncated> *dies*So they've tested that the board can handle the data. They are still to:Actually have a chipActually make the chip workActually bin the chipSort out the communication protocols, never mind proper USB interfaces etcGet the power consumption down to ANYTHING near what they promisedActually make it hashActually make it hash to the required speedActually make it hash <truncated> make it hashable 24/7Actually prevent it overheating [That's 160W TDP on the equivalent of a dual slot GPU, which would typically warrant ~40CFM - they have 0, AND will be placing many in a an enclosed case]Work out how to do the power distributionMake the shit fit in the cases.Work out sufficient testing algorithms and the logistics of burning in '300 units a day'Sort out the logistics of labelling, warranties, who gets what.Actually deliver anything that works for more than a few days.ETA 5 months, GG.

### Reply 6:
Im confused....Now, Im not that versed in power circuitry ... but how the hell can the PCB power circuitry design be so shitty that the board itself is using nearly 2x the power than the chip? iirc the SC was supposed to be like 60watts right? The whole unit is using 150ish .. how the fuck can the board be using 90watts?!?!?Did some noob engineer design the board or some shit? I mean really.

### Reply 7:
42W at idle? Good lawd. My x6500 FPGAs only burns up 17.2W at full load...Didn't they like...put a dummy load in place of the ASIC chips and actually test these boards or something while they were waiting on chip delivery?I guess not.

### Reply 8:
Yay! they are not a scam at least. This means they'll eventually ship a product.fyi: we reached that stage 1.2 month before we shipped. Let's see how they handle their remainder issues.

### Reply 9:
Im surprised that their VR solution can even handle the wattage!!! They were targeting 60w! They must have known they where going to exceed their power budget!

### Reply 10:
I feel I speak for a lot of the community here when I <truncated>

### Reply 11:
Is it just me, or do the lights dim when he flips on the BetterFail thingy?

### Reply 12:
does it even MH/s!

### Reply 13:
The more important question is:WILL IT BLEND?

### Reply 14:
Really? If they were a scam you could expect as realistic a 'prototype test' as they could muster, and I saw nothing in that vid which proved much of anything. It amazes me to see how many people consider a vid of some numbers changing on a screen to be 'proof' of anything more than a tiny amount of scripting ability.You could also expect that they would make the 'test' look just good enough to give people hope (and thus not cancel their pre-orders) but bad enough to have a reason for another bunch of delays.The only thing which gives me some amount of hope is that they made things look worse than they really needed to.As I said for Avalon, I won't believe with a high degree of certainty that they can hash unless they can publish a set of hashes within {x} amount of time of a known dataset being globally available. And even then, not until a very credible third-party is standing over their shoulder to make sure that they don't have an Avalon hiding under the desk or something of that nature. I wouldn't trust these people at all.

### Reply 15:
Looks like some charity is about to make out with $100k.<link>

### Reply 16:
Well, they had some type of chip(s) in that board, because it drew almost 160w when they ran the test.

### Reply 17:
Others were right in suggesting it was likely a dummy load for them to test the power distribution. Could literally just put a series of resistors under the heatsink and manually ram current through.

### Reply 18:
Good one Yifu! I LOLed.

### Reply 19:
Anyone can tell me:1 why only 15 nonce like response is returned?2 what was he tested? single chip? hash core?3 why it take ~20s to have the power to return idle?

### Reply 20:
That would be a really nice bet to make some money. The right horse should be easy to pick

### Reply 21:
The only party surprised by higher power usage appears to be BFL itself.. even after they failed to do correct estimates for their FPGAs.<insert history repetition quote>

### Reply 22:
You're hashing prematurely.

### Reply 23:
It looks much more as if they are just testing the controller IC of the board and not the actua<rest of thread truncated>
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8577,"Date: 2014-11
Topic: can anyone explain evaporative cooling system
### Original post:
hi,so im thinking about designing a new bitcoin shed for my farm as a project.i have fell across this farm: <link> they are using a evaporative cooling system to cool there miners and i thought it was a cool idea however had some doubts. The writer describes it as ""durable paper product that looks like the wavy corrugated part on the inside of cardboard. Water is pumped to the top and flows down, and the fans blowing outwards on the other side create negative air pressure, drawing fresh air through the holes and cooling it."" however i don't understand how they do it with all the moisture coming into the farm at night and from the system itself wouldn't it damage the miners? how do the keep the moisture away from the rigs? Can explain this cooling system in more detail? Thanks,Jeppe

### Reply 1:
try this >> <link> It's pretty easy ..

### Reply 2:
But how do they keep the moisture/humidity out from damaging the equipment??

### Reply 3:
<95% humidity isn't a danger to electronics, its only when you start getting fully saturated air that it begins to deposit droplets everywhere.

### Reply 4:
hot surfaces = evaporation.cold surfaces = condensationminers and heatsinks are hot surfaces, so theres no water on them to cause shorts

### Reply 5:
Can anybody explain what is the different between evaporative cooling system as compare to water cooler fan?

### Reply 6:
This reading might be interesting: <link>

### Reply 7:
Evaporative cooling relies on the amount of energy it takes to excite water from a liquid to a gaseous state. If you increase the humidity by say, 10% that means you are actively moving water into a gaseous state. This transition from liquid to gas requires energy, which lowers the temperature of the air.

### Reply 8:
Common PC water cooling systems use a metal radiator to dissipate heat into the air, it's the same as a normal heatsink but you're using water to move the heat away from the source instead metal conduction directly to the dissipation surface.Evaporative cooling makes use of the fact that it takes something like 970BTU to evaporate 1lb of water. If you have a large surface area covered with water and blow a fan over it, you get sensible temperature reduction from the energy taken to evaporate some of the water. It's much more efficient than a normal air conditioner but they don't get used much for air conditioning normally because it dumps a crapload of humidity in the air. Miners don't care so it can be an advantage.Also evaporative cooling effectiveness is inversely proportional to the humidity of the outside air. If it's already humid as shit outside, you don't get much gain with an evaporative cooler. In the desert, they work great

### Reply 9:
We use evaporative cooling on our house , and it use much less power around .75 kw per unit.And as aosmith said, if you have dry air you gain more cooling power.The evaporative cooling system used on that mining farm , is consist of two part the durable paper with continuous water above it and behind it there is a fan that suck the cold air come through that paper.

### Reply 10:
swamp cooler

### Reply 11:
Which caused some problems at Facebook a few years ago.<link> systems, or simple weather changes on the outside (temperature during day and night, weather moving through) etc can cause problems, especially for power supplies.The Chinese farms have these problems on the large scale, along with dirt and pollution. But of course difficult (for them) to tell if it's just crap quality of components or simple physics at work.

### Reply 12:
Thanks, this explains it pretty good.

### Reply 13:
Legionnaires Disease

### Reply 14:
Don't bother with evaporative cooling unless you live in an extremely dry environment. It is a very efficient method of cooling only if you don't have high humidity. Otherwise it just raises humidity levels without adding any significant cooling effect.I was very surprised to see evaporative cooling used in that private data center in Thailand that burned down. How did they think that would help with cooling at all?

### Reply 15:
It is because it was very cheap and it didn't take much electricity , and i think they may life in a dry area.

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    ""hardware_name"": ""PC water cooling systems"",
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    ""hardware_name"": ""metal radiator"",
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    ""hardware_name"": ""power supplies"",
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5258,"Date: 2013-06
Topic: New test FW for Avalon available
### Original post:
I just flashed it to my Avalons and so far so good

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11087,"Date: 2022-01
Topic: Avalon miner pmu
### Original post:
Why does the device not work when replacing it with another and is there a software for it because I found files for it on the canaan website, but I do not know if it is soft or not and how to install it if it is soft? Avalon 851 851 ?

","[
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21036,"Date: 2016-05
Topic: MOVED: [AJUDA] Montar Máquina de Mineração
### Original post:
This topic has been moved to Trashcan.<link> in English.

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11702,"Date: 2011-12
Topic: Monitoring of hash rate over short time periods
### Original post:
HiI'm running cgminer with quite a few gpus. I want to tweak and monitor performance of each gpu at a time so I can fine tune them. Cgminer just offers average has hashrate for all. (6 gpus per client)Can I do this or is there another way I shud go about it? The average per gpu jumps around too much for my liking.Thank you.

### Reply 1:
You sure? Highlighted numbers are average per card AFAIK:

### Reply 2:
Yes but mine is constantly jumping around with very large variability . Is yours more stable? Upon further research I see a post where someone has mentioned switching to overclock makes the average more stable (6990) - ill test that out tho I wud prefer to keep it at 375W so I can predict electricity usage. In the meantime the average rate per gpu jumps around so much its ikpossible to gauge whether ur getting a small increase in hashing power.

### Reply 3:
The left figure (458.0) fluctuates a bit, I think its a 5s average; the right one that I highlighted (456.6), doesnt change at all (after running for a while). I think that is the average since starting the app?

","[
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""gpus"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6990"",
    ""hardware_is_owned"": false
  }
]"
19166,"Date: 2014-04
Topic: BPMC Red Fury USB Miners ~ Raspberry Pi (Support Thread)
### Original post:
Greetings,Has anyone had any luck getting these Red Fury USB miners to work with either BFGMiner, CGMiner or cgminer-HEXu? I an very new to all this and having a heck of a time getting this Red Fury to be recognized my Minepeon. I am running: MinePeon Version 0.2.4.6 and Miner Version: cgminer3.12.3.Any help here greatly <truncated>

","[
  {
    ""hardware_name"": ""Red Fury USB miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFGMiner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CGMiner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cgminer-HEXu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Minepeon"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": false
  }
]"
14240,"Date: 2011-06
Topic: So, how many people are switching away from deepbit?
### Original post:
With all this noise about deepbit controlling 50% or more of total mining power, I've seen a handful of people say that they've moved to other pools. I'd like to get a firm idea of how many people have done so.So, have you moved? If so, where?I had been meaning to experiment with deepbit's PPS model (I started on proportional), but with the controversy I decided to move over to eligius. Fees per share are lower there anyway.

### Reply 1:
I'm in eligus. Wanted to try it out anyway, and the fact that I'm supporting a pool that allows low fees is nice. And the fact that coins show up directly into my wallet is a big plus.I represent about 2gh/s

### Reply 2:
I might switch when my 5830 comes but I've been using deepbit so far.

### Reply 3:
The highest I saw was 548. Seeing as it's down to 526, it looks like the answer is not many.

### Reply 4:
it allows low fees for miners, that's true,but the fact that it doesn't allow ANY free transactions isn't that nice.it forces every bitcoin-user, may it be a miner or not, to pay transaction-fees.do you ever send free transactions?i hope you don't.

### Reply 5:
I took my 1Gh/s over to Eligius, I like getting the payout in block generation.

### Reply 6:
Even beyond the security problem, which is real imo, I don't understand why the miners who bailed out of slush's pool figured they should join the one pool with the highest fee oO""

### Reply 7:
We saw a roughly 15 Gh/s increase at BitcoinPool.com in the past 12 hours. So, a few... I can't account for the other pools.

### Reply 8:
btcmine.com shot up to 74""Eligius"" more than doubled to 40

### Reply 9:
It's understandable. I for one decided it would be best to evenly split up all my miners on various pool. Until now I had all my miners on slush's pool, then when that went down I moved the all to deepbit, but later I realized that with such a huge hash rate deepbit would not be in my best interest due to the very fast rounds. So my solution for now is to split half of the miners on some other pool and as for the others I'm not sure where to place them (still currently on deepbit). I think if everyone did this (distributed their hashing power on multiple pools) it would be better for the network. This way when one huge pool goes down for whatever reason it does not cause a huge and sudden drop in total network hash rate as the users scramble to find alternative pools to hop to. Also a mining proxy may be an even smarter solution. This is something I intend to look into this week.Happy mining everyone!

### Reply 10:
With the current limits used by most miners (including the big pools) no more than about 10 free transactions will ever be put into a block (because the software stops adding them when the block hits 4k) and less if there are also paying transactions. There are only 10 blocks solved an hour (well, more at the moment because the hashrate grew and difficultly will take another day or two to catch up).Some miners appear to be processing blocks without any transactions at all (except the generated transaction to pay them, of course), even though there are with fee transactions pending. (For example: <link> over the long term as the software is currently setup the network will only confirm 60 free transactions per hour. The backlog of free transactions went up to over 1000 several times last week. It only takes a _very_ small fee (0.00004096 BTC) to get included in Eligius blocks. It's pretty reasonable compared to the network's current inability to cope with many free transactions.I talked to Luke-Jr on IRC about the possibility of setting up a free tx fountain to pay miners to process free transactions, he pointed out that the fountain would need to have some heuristic to distinguish <rest of post truncated>

### Reply 11:
You also have to consider variance in the pools themselves. A quick look slush's graphs will show you that even though you'd expect a big pool to give you a steady daily payout, it isn't the case, and you'll good and bad days. Now, if pooling is about reducing variance, then spreading your miners on several pools is definitely the way to go, on top of the fact that it helps secure the network some more, which is the very reason there is a profit to make out of mining.

### Reply 12:
Yep, good point! Thanks for pointing that out. It is now my new policy to spread out my miners as widely as is reasonable. I wish though there were more pools out there. A few more pools, each with a total capacity around 50 Ghash would be a good thing IMHO.

### Reply 13:
Yep, I moved over to eligus.

### Reply 14:
i'm well aware of that and i don't think that miners processing blocks without any transactions at all are any better.it might take just a _very_ small fee, but even a _very_ small fee is a feeand how small it is highly depends on the amount you send and the balance you might (or might not) have left after you<rest of thread truncated>
","[
  {
    ""hardware_name"": ""2gh/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5830"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1Gh/s"",
    ""hardware_is_owned"": true
  }
]"
8155,"Date: 2014-07
Topic: Two S2 Antminers on the same network conflict - how to resolve?
### Original post:
I have two S2 Antminers (Bitmain) that I would like to run on the same network. I have set up miner #1 and have gotten it to hash successfully. When I then connect miner #2 with the same settings except for a different IP address (192.168.168.99 for #1 and 192.168.168.98 for #2). To my surprise, #2 can be pinged but it does not hash. I decided to try an experiment to test for some form of network conflict between the two miners as a cause for the failure to hash by #2. I disconnected the successfully hashing miner #1 from the network and I then used the known successful settings from the disconnected #1 to set up #2 which I connected to the network. With #1 disconnected, #2 promptly began hashing. From this I conclude that the reason that I can't get #2 to hash when #1 is connected to the network is because the two miners conflict in some way on the network, causing #2 to fail. Do you have any suggestions for how I can overcome this? To cover our home and outside areas, I have three Apple routers, one base station and two set as bridges. Thank you for any advice you are able to share. Justin

### Reply 1:
The miners will not conflict if they have different static ip addresses assigned to them. The likely cause of the problem is a conflict between something else on your network and the S2 with ip address 192.168.1.98.I've had this happen before, and you will get intermittent connectivity when two devices (not necessarily miners) have the same ip address on your network.

### Reply 2:
This can happen with some routers, when both devices have the same MAC address. Check if they have the same MAC address. If positive, do this:SSH into your S2, thenCode:ifconfig lan0 downmacchanger -r lan0ifconfig lan0 upas I am not familiar with antminers, I hope they have some decent distro installed, which will have the macchanger. If not, you'll have to try to install it.Code:sudo apt-get updatesudo apt-get install macchanger macchanger-gtk

### Reply 3:
Unplug the network for one of your units, log into the unit still connected to the network. Click on Network, when Edit (next to WAN), set the 192.168.1.99 address to a free address (192.168.1.100, etc). Click Save & Apply, you can now plug the other miner into the network and you won't have a conflict.

### Reply 4:
Thank you Cloverme for your suggestion. Your approach solved the problem. Much appreciated.Justin

### Reply 5:
Hi Psahx:I also tried your suggestions and, while the suggestion made by Cloverme solved my problem, studying the approach you outline was a great teaching exercise for me.Thank you for your efforts.Justin

### Reply 6:
Based on your first post, I have assumed you already got different IPs assigned to both of your devices. That is why I have suggested to try to see, if they have the same MAC (it happened to me before, with cloned NICs to have the same MAC).Glad you have got it figured out, anyway

### Reply 7:
So was there actually a device that was trying to use the same IP as the miner? Mobile phone or gaming system maybe?Glad you found a solution fast!

","[
  {
    ""hardware_name"": ""S2 Antminers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Apple routers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Mobile phone"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gaming system"",
    ""hardware_is_owned"": false
  }
]"
14160,"Date: 2011-06
Topic: Problem with OpenCL, getting my video card to work
### Original post:
Hi, I'm trying to get GUI Miner to recognize my ATI Mobility Radeon HD 3870 X2 as an option for mining. No luck so far. I downloaded and installed OpenCL. What next?Thanks.

### Reply 1:
Are these cards not compatible

","[
  {
    ""hardware_name"": ""ATI Mobility Radeon HD 3870 X2"",
    ""hardware_is_owned"": true
  }
]"
1844,"Date: 2013-10
Topic: [LMTD AVAILABLE!] 0.9 OR LESS ~ BPMC ""BLUE FURY"" 2.7 GH/s USB MINER! SSINC GB#9!
### Original post:
I have a small amount of units still available because a few pre-orders didn't pay on time! PM me quickly if you missed out because there are only a few!

### Reply 1:
2 for 1.8 btc<link>

### Reply 2:
Confirmed! Thanks for your order! 31 units left!

### Reply 3:
I am confused I thought you closed this buy down> I have 2 questions:one can I add to my order of 20?Two does this have windows 7 bit minter.com java client support? I know Doc H was working on it. I would order a few more if It works with bit minter. thanks phil

### Reply 4:
He had a cancellationTalk to bitminter. I'm waiting for cgminer myself but the bfg in the op should work

### Reply 5:
""Accepting PayPal"", where? It thought there was a link before.

### Reply 6:
Yes I had a reserve order cancel partially so those are now available again Bitminter is being worked on but I don't think it's ready yet. CGminer in linux and BFGminer in Windows and Linux are working, check the OP or Beastlymac's info page for installation <truncated> is working in linux and I'm sure it will be ready for windows very soon.I won't be accepting Paypal for these last 31 units. Just BTC at this time.

### Reply 7:
In for 2! Email sent.

### Reply 8:
When do these ship?

### Reply 9:
First post. Big green text under shipping prices.

### Reply 10:
Thanks

### Reply 11:
Confirmed! Thanks for your order!

### Reply 12:
Add another two more to my order, I'll send you an email with confirmation and transaction_id, waiting on confirmations as I had to move some BTC back over instead of selling on the exchange. lolEdit: Sent you a PM with a question.

### Reply 13:
Hello!I am in for two, just send you the BTC's (2.1, because of international shipping, USPS Priority), and the email with transaction ID and shipping data.Please confirm when you can and let me know if you need some other info.thank you!

### Reply 14:
Responded! Thanks Confirmed! Thanks --Also, 16 units left!

### Reply 15:
I -FINALLY- got Coinbase working! If you've still got some available on Thursday, I might be up for getting a few more.Also, it seems these now work with cgminer in Windows and Linux! (<link>

### Reply 16:
No worries! Because of the huge response in interest for the few I had left I contacted Beastlymac and asked if I could get another 100 units and I was just barely able to secure them as they're about to start production this week! So now I have 104 units left!

### Reply 17:
Trying it now to confirm

### Reply 18:
Email sent. TY.

### Reply 19:
Replied! Thank you

### Reply 20:
How many left?

### Reply 21:
3 more. I sent additional 2.6 btc5 x .88 = 1.8 + 2.65 total

### Reply 22:
Do the Furys need a cooling fan?

### Reply 23:
No I am running my one without it and the heatsink is comfortable to touch (not incredibly hot)

### Reply 24:
confirmed! Thanks for your orders

### Reply 25:
See post#1 it is being updated with # avail right now:Pre-order units left : 99

### Reply 26:
Just updated 79 units left!

### Reply 27:
I just sent in 3.4 coins for a total of 4 more units.<link> 4 sticks 3.4 btc new order today 9/30<link> 20 sticks 17 btc older order 9/22grand totals 20.4 coins for 24 sticks. TY

### Reply 28:
.9 BTC sent, confirmation information via emailAdd to existing order~nh

### Reply 29:
.8 BTC sent, confirmation information via emailAdd to existing order~nh

### Reply 30:
Confirmed! Thank you!Confirmed on both! Thanks

### Reply 31:
and thank you. and please please please pretty please with sugar on top of it deliver them on time!!

### Reply 32:
I'm in on 40.. please from me too! Lol

### Reply 33:
Open Paypal again I want two more!!!!!

### Reply 34:
Sorry because of the time crunch on how soon these will be shipping I don't have the time to transfer funds from Paypal to BTC.I'll have Paypal available again when I open up my next Group Buy for sure though.Thanks!

### Reply 35:
Sorry if I missed this in thread, but will these be loaded w/ cgminer?

### Reply 36:
Loaded? Just plug them in and cgminer will recognise them. Any cgminer including or after 3.5.0

### Reply 37:
ah perfect. Sorry I'm noob to mining. But, I do have cgminer now. Do I need to do nething running a 6 port hub? Like d/l some other s/w? or configure cgminer in some different way?

### Reply 38:
Yes get zadigAnd you better have 4 amps on that power supply

### Reply 39:
I looked up zadig, and don't get why I need to install drivers. BPM says tat cgminer will just plug n play no?Also looked up my hub and says it's only 3.4 amps. Does this mean that I can only power up like 2 or 3? Really sorry guys, just really new.

### Reply 40:
the hub may only run 3 sticks. is it 5 volt brick or a 12 volt brick.

### Reply 41:
3.4 is borderline good for 6. .5 amp each.Yes you must use zadig.<link> in your usb then replace the driver with winusb using zadig.

### Reply 42:
Yall are the best. TY. tho, I gue<rest of thread truncated>
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    ""hardware_name"": ""BPMC \""BLUE FURY\"" 2.7 GH/s USB MINER"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Windows 7 bit minter.com java client"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CGminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFGminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""6 port hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5 volt brick"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""12 volt brick"",
    ""hardware_is_owned"": false
  }
]"
1084,"Date: 2013-08
Topic: [OPEN][Group Buy] KnCMiner Shares 1.1BTC = 5GH/s *6 Sold - 82 shares available
### Original post:
I will take 1 share in the miner #6 if it's still available.

### Reply 1:
tx id: <truncated>

### Reply 2:
payout address: <truncated> you!

","[
  {
    ""hardware_name"": ""KnCMiner Shares"",
    ""hardware_is_owned"": true
  }
]"
15240,"Date: 2014-07
Topic: What about bad pool luck? Or maybe it's something else?
### Original post:
I have been trading a total of about 3TH on mainly Slush and BTC Guild.If you look at BTC pool luck chart for the last couple of weeks you will notice that their 'luck' has been underperformingway more than chance alone would indicate. Do not even care to speculate if there might be funny stuff going on.Slush often has a couple bad or good days in a row but never extreme ranges for extended periods.Any long term miners want to weigh in this with their opinions?

### Reply 1:
Sounds like someone is submitting fake shares on the pool, you should try check yourself by looking at the top 50 hash rate.

### Reply 2:
block witholding ?

### Reply 3:
The bolded part is not true. Do the math yourself or check with Organofcorti. It falls within a normal confidence interval.That being said yeah it's not pleasing. If you flip for who pays lunch and you lose 2 out of 3 times do you say the coin is rigged?There was a known withholding attack that ended a month ago and that messed up the 3 month stats. It is possible that somebody is repeating the attack but it is almost impossible to detect until after the fact.What's funny is that when BTCGuild had very good luck last year people were suspecting they were somehow cheating.If you're not happy you can try Slush or Bitminter. You luck may or not follow, depending on how superstitious you are.

### Reply 4:
BTC 1 month luck is 80%....really not acceptable in my opinion. Can make the diff between making or losing.Well I switched that hash power over to slush alone and my payouts are more in line where they should be.Anybody already come up with the 'optimal' allocation between pools?

### Reply 5:
Again, you are incorrect. Please look at the table correctly. 2 week luck is at 80%. 1 month is at 89%. The pool is now down to 6% of the network. The pool is run by Eleuthria who actually limited/stopped his growth when he got close to 40% just so as not to scare people with 51%. Ghash.IO hasn't bothered to inhibit its growth at all.

### Reply 6:
Thanks for the correction...But even making 20% less than expected for 2 weeks sucks, or does it not? While I am new to mining, I have 20 years experience with a hedge fund. Will talk to our risk management guys about this. I know this much, that we would go through our trade systems with a fine tooth comb if our performance swayed that much.

### Reply 7:
Well yes it sucks, but what can you do other mine somewhere else. You can't get mad you bet on red and the roulette wheel does black 8 times in a row (essentially another pool find more of the 2016 blocks then your pool).You can't eliminate variability. The only issue is whether o not something malicious is occurring at the pool either knowingly or unknowingly. Most pools have gone through this at one point or another. Back when difficulty was 9 million Ozcoin had a block that took 81 million shares, 9 times difficulty!!! That was what caused a lot of people to leave Ozcoin, but the pool still survives despite a theft of almost 1000BTC at one point.Eleuthria has nothing to gain really if his pool has bad luck - he makes more if it has good luck. I'm sure he would love to see the number go back to neutral or above, but you can't will it.Some people will jump onto the pool thinking it has had so much bad luck that it is due for a really good luck streak.

### Reply 8:
There could also be the possibility that there is equipment out there can't actually solve a block now? What proof is there that all equipment is capable of achieving a best share in the billions and all chips and mining equipment is equal? We are told it can? But can it really?If so where's the proof?We are just left with X companies word?Many companies could of very well just made short cuts because no one would be able to prove they did and chalk everything up too luck? sha 256 only uses 128 bit memory bus @ 2^128 which is limited to about 16 Billion as a 32 bit address is just approximately only 4 billion @ 2^32 so it is mathematically impossible for it too use every nonce numbered 1 to 16,800,000,000 at full capacity already it can't use every nonce so a short cut is already made somewhere?.I have read that there is equipment that is unable to use every nonce? This would make sense as a limiting factor?This might be the limiting factor on much of the equipment today? As earlier mining equipment was built with most likely a use of a limited amount of nonce's as it only needed to solve a best share in the millions and not expected billions?This very well can be the deciding fact<rest of post truncated>

### Reply 9:
Is it possible? Yes. Is it likely? No, and the proof is in the math.Now obviously the chips and mining equipment aren't 'equal'. Some will be faster (meaning it can make more attempts per second), some will be more energy efficient (meaning each attempt takes less energy), and some will have fewer hardware errors <rest of thread truncated>
","[
  {
    ""hardware_name"": ""3TH"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mining equipment"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
  }
]"
10730,"Date: 2018-05
Topic: Ledger Nano Ether Wallet
### Original post:
Hi, first time using Ledger nano s, with MEW wallet, i log in, it shows 5 different MEW address, are those all mine? who created those account, and how come I don't see private key when I log in those accounts? Also, I don't need any password like a normal wallet? little confused here how it works, can anyone explain? thanks

### Reply 1:
Consider Myetherwallet as an interface to interact with your Ledger nano S. You will still need to enter the PIN to unlock your Ledger or confirm the transactions from the device. The addresses are yours, pre-generated from your seed.

### Reply 2:
Ledger has its own HowTo for MyEtherWallet, have a look: <link> are also a ton of guides, blog articles and videos available: <link>

### Reply 3:
These wallets have already been built in you ledger nano s. When I'm bought trezor I got 5 eth addresses for my device. You can check your own cabinet on ledger where you can configure all functions

### Reply 4:
Thank you, but how come I am not able to see the private key for those pre-built 5 accounts? does it mean, I don't need private keys for those accounts?

### Reply 5:
Hello imteaz, look here:<link> hope the information will help you. All the best

### Reply 6:
The private-key is inside your Ledger. Putting in a simple way, MEW uses your public key (address) to see your balance and build the transaction, which its sent to the Ledger device, signed with the private-key and sent back to the computer, where its broadcasted. The private-key never leaves the device (reason why you can't see them, and why hardware wallets are so secure compared to normal desktop wallets).

","[
  {
    ""hardware_name"": ""Ledger nano s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""trezor"",
    ""hardware_is_owned"": true
  }
]"
20960,"Date: 2016-03
Topic: Avalon 6 miner connection problem
### Original post:
I posted in a wrong place sorry about that didn't knowwhat card you mean the sd card ?

### Reply 1:
Give me a minute or two,to look at mine.I am not sure if you need a new card in the rasp piI ask for this to be moved to mining supportI think you best option is to burn a new sdcard.But before you do that.Are you using a windows pc?Maybe you can try angry ip software and find the rasp pi.I think you won't be able to do so since you most likely set the rasp pi to an address that can not work on your router.Since I don't know what you set the rasp pi to it is hard to tell you how to find it.Do you know how to burn an sdcard?

### Reply 2:
Okay you are kind of new at this.Do you have the rasp pi? It is the little box like a pack of cigarettes

### Reply 3:
yes I do it came in box with the miner SD card is connected to it and it's working fine the problem happened when I changed connection settings from the miner page !is there anyway to reset the whole system to default settings ?

### Reply 4:
I get into 192.168.1.2 there is a black screen with this message luci - lua configuration interface

### Reply 5:
hello everyone I'm new in here today I bought Avalon 6 miner everything was great I was able to get into the page through my ip in the network setting page I did something wrong I changed DHCP to Pooei I guess after that I couldn't get into the miner page and I don't see it in my router's page either !!and there is a black screen with this message luci - lua configuration interfaceHow can I reset everything back to normal ?

### Reply 6:
good that is correct does it ask for a password?use rootthen look for the words advanced version click on thatwhen you go to advanced version look for status upper left click on it

### Reply 7:
no just a black screen with this message :luci - lua configuration interface

### Reply 8:
there is nothing to click on that page?If you can't click on anything to leave the page you will need to make a new sdcard .try this thread<link> lot of owners are here on this page.

### Reply 9:
burned a new sd card didnt work can you tell me what files do I need to burn I tried this <truncated> feel like I bought a brick

### Reply 10:
Look at part 3 of that post:3) InstallVery simple install with the Raspberry PI I recieved from BlockC. It was set to DHCP so install was plug and play. I did change it to static IP as I like static with having multiple miners on my network. BlockC sending the Raspberry Pi with a default of DHCP saves you from the install process you did on the 4.1's if you did it yourself. It saved roughly 15 minutes or so and turned install into a breeze.For those who did not get the Raspberry Pi kit from BlockC here is a link to a DHCP Raspberry Pi image. All thanks goes to BlockC for the image. Just use a program such as Win32DiskImager and flash it to your SD card. Then insert SD card into Raspberry PI and you now have a DHCP Avalon 6 controller. Download is below:DHCP RPI Image: <link> the DHCP image that is BlockC's kit image and see if it does you some good.

","[
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 6 miner"",
    ""hardware_is_owned"": true
  }
]"
19599,"Date: 2014-07
Topic: Software to Monitor Cloud Hashing?
### Original post:
So i'm looking into selling some cloud hashing power to other friends of mine, but I was curious if there was any software anyone knew of that I could use to monitor the output of my devices (Since I wont have access to look at the miner on the pool of my friend's choice). Obviously I can see the CGMiner window when i'm around the hardware itself. But i'd like to find something that would alert me, hey miner x isn't sending throughput to the specific user. Thanks

","[
  {
    ""hardware_name"": ""CGMiner"",
    ""hardware_is_owned"": true
  }
]"
3149,"Date: 2014-03
Topic: [SOLD OUT] ASICMiner 49 port hubs - .25 BTC - Free Shipping
### Original post:
(NEW) ASICMiner USB Hubs - .25 BTC - Free shippingStatus: In Stock - No usb sticks in stock, just the hubs.Price protection - If I drop price between payment and delivery, you are refunded the difference!Payment Address: <truncated> Shipping RatesHub only: .04 BTCHub plus 50 units: .07 BTCFree Shipping

","[
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    ""hardware_name"": ""ASICMiner USB Hubs"",
    ""hardware_is_owned"": false
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]"
21854,"Date: 2017-11
Topic: AntMiner R4 Stopped working
### Original post:
my Antminer R4 (Antminer R4, Batch 5(7.5TH/s)) suddenly stopped working after reboot. i tried various options like reset using different methods but i cant get it to workeven the web based admin console was not reachable however afrer several reboots and holding the IP button i was able to connect to web based control panel...however strange problem is that i cant see the miner config screen though i can see other screensi updated firmware using web based console n got success message but still same problem persists...pfa screenshots and kindly advise ...<link>

### Reply 1:
too late you did firmware upgradei can't help you sorry.if you are usa based maybe bitmain warranty can help<link> r4 breaks alot and you muscled a firmware update on a broken r4.your best shot is bitmainwarranty good luck

### Reply 2:
is there a way to connect using ssh....

### Reply 3:
Too late .The r4 is very delicate,They break and break and break.Someone had a link that show how to reset to the original firmware.someone gave it to me it may work if you reset it.I will look for a link to the reset.In I reset it and it still did not work.I sent it in to bitmainwarranty and they did fix it.

### Reply 4:
You can ssh into it with username root and password admin.I doubt the firmware is causing this, at least, if it was installed correctly. I had an R4 controller fail and I replaced it with an S9 controller, flashing it with the R4 firmware and it works fine. If the image was installed properly, and your controller isn't broken, it should be working. Make sure you don't have anything preventing javascript from running on that page.The ""ant_data=;"" you see in the miner configuration page is there because the header has an inline script that begins with Code:echo ""ant_data = ${ant_result};"" The script is fetching cgi data from the config saved in <truncated> For some reason it is failing at that point.

### Reply 5:
thanks all for your suggestions ..

","[
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    ""hardware_name"": ""S9 controller"",
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]"
1341,"Date: 2013-08
Topic: 104 USED Erupter USB's IN-Hand Ships Immediately 30BTC for all! w/ SHIPPING
### Original post:
PM sent

### Reply 1:
9 Sold - 2 orders - Updated First Post with Forum Names & QTY95 LEFT

### Reply 2:
Just saw this post and also noticed that 100 of them are available here <link> for 18.99BTC

### Reply 3:
Less then 100 now available and they ship out immediately. A few more PM's sounds like another 30-40 are gone in the next few hours. Will update tonight when I get home. Any orders w/ payments received before Midnight tonight I will pack-up and ship out tomorrow.

","[
  {
    ""hardware_name"": ""Erupter USB"",
    ""hardware_is_owned"": true
  }
]"
15717,"Date: 2016-03
Topic: MOVED: The Best Cloud Mining + Payment Proof
### Original post:
This topic has been moved to Trashcan.<link> spam.

",[]
21268,"Date: 2017-02
Topic: ISP disconnected my internet because of mining
### Original post:
Ok so here's my issue I live in Manitoba, Canada and realistically there's only 2 ISP's MTS and Shaw. I currently have MTS and a few days ago whilst I had stopped mining due to not having the right setup at the moment to keep everything cool my ISP decided to disconnect my Internet. Seeing as this has never happened before I called MTS. After waiting for an hour and talking to level 2 Tech Support they informed me that my IP address was flagged by their system and was disconnected because their system believed I was performing a DDoS attack. This all happened once i took my miner offline after 3 days of hashing. So my question is are there any ways where I can setup my miner (Antminer S3) so that it doesn't flag my IP as doing a DDoS attack and my lose my internet connection again.

### Reply 1:
I'm fairly certain your IP was flagged for a different reason than mining.Maybe your computer is infected with some kind of malware and is part of a botnet?You can't really be attacking by yourself so it doesn't really make sense to flag your IP.

### Reply 2:
It sounds like you probably had a virus on another system or something else other than your miner. Your miner would never be able to perform a DDoS attack, just like it couldn't surf the Web and watch YouTube videos. They have one specific thing they can do, and that would be mining. I would call them back and ask which computer/system it was and ask if they have any proof at all that it was actually done by you or if it was done remotely.

### Reply 3:
there are only 2 other computers on my network and i have been through each of them with a fine tooth comb i even looked into the other devices like the two cell phones and the KODI box as well as my Pi-Hole and nothing. When i spoke to them about the flag their system analyzes the traffic coming in and going out from my IP and the traffic was consistent with a DDoS attack and further evidence points to the miner because since having the miner disconnected i haven't had my internet cut off. I have changed nothing except disconnect the miner from the network and that has my internet back up and running fine.

### Reply 4:
Guess it's time to speak to customer retention or switch ISPs.

### Reply 5:
ya switching ISP's is not an option i save a bunch of money on my cell bill by having them as my ISP plus Shaw Cable has a limit of 1 TB which i would go over in a flash with the amount of stuff i do on my laptop and on my network in general was more looking for a way that instead of using TCP i can use UDP instead the flagging system only monitors TCP traffic

### Reply 6:
Use a good proxy/VPN/vps and problem solved.

### Reply 7:
any recommendations for a good proxy?

### Reply 8:
I use expressvpn in canada, you can install them on the router.I am also in MB, on mts.At one time I had 30 miners running for a few months.It was not the miner that set them off, could of been a hack, I'd ask for more details, tell them you scanned and fixed anything (say you found something onw ifes pc etc. or some lie so they give up) and they should reactivate you.The mts guys are tools. hate dealing with them, but shaw has data caps....Edit:didn't see post that i was back on.Vpn for sure. likely one of their people being a knob, not even sure you can install malware on a miner lol

### Reply 9:
Just came across thisfigured it may answer your question<link>

### Reply 10:
You should call your isp and ask them for the ip that they thought you were ddosing. If it is not the ip of the pool you were mining on then it was not from mining but probably a virus.

","[
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    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cell phones"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""KODI box"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Pi-Hole"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  }
]"
17051,"Date: 2012-02
Topic: [solved]Biostar N68S3 video card problem
### Original post:
Hi everyone. I have a Biostar N68S3 mobo, Win 7 x64, Athlon II x2 2.8GHz, 1gb DDR3 ram.I disable and uninstall on-board graphics then shut the pc down. I install my Radeon 5750 and boot computer. Problem is, computer won't recognize my 5750 and boots into windows and reinstalls my onboard vga.PLEASE HELP!!!!EDIT: SOLVED!! dead video card

","[
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    ""hardware_name"": ""Biostar N68S3 mobo"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Win 7 x64"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Athlon II x2 2.8GHz"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1gb DDR3 ram"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""on-board graphics"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Radeon 5750"",
    ""hardware_is_owned"": true
  }
]"
19070,"Date: 2014-03
Topic: GUIMiner Problems
### Original post:
Hello friends,I hate to sound like such a newbie...but in fact I am. I have implemented the GUI GUIminer and have connected to Slush's pool mining. The problem is I can't seem to get my video cards into the act. The GUIminer is showing me at 720 MHash/sec but my video cards are showing no load activity or temperature increases.It is almost as though only my CPUs are working. I can't find anywhere in the GUIMiner by ""Kiv"" how to make the video cards get into the game.Does anyone know enough about this to help me?Thanks

### Reply 1:
Well if you are indeed mining at 720Mhash then it is highly unlikely that only your CPU is doing the mining as most CPU's can only mine at around 2-3Mhash.

### Reply 2:
Also mining BTC at this point with anything but asic devices is pointless unless just for learning for a short time.What ""device"" is selected in your drop down window? This is the device that is mining.If you are getting 720Mh/s out of your video card on slush's pool there is a reasonable chance that it can actually be profitable mining scrypt alt coins depending on your power costs, but we need more info.What is your video card?

","[
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    ""hardware_name"": ""video cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic devices"",
    ""hardware_is_owned"": false
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]"
4616,"Date: 2013-04
Topic: Avalon ASIC pay back
### Original post:
Hey I do not understand one thinghow long does it take for a AA to make back the 75 BTCI really don't get why AA would not be used by the manufacture to mine, if they were worth more than 75 BTC.Can some one enlighten me?

### Reply 1:
Read this: <link>

### Reply 2:
I am afraid no one could give you a clear answer.Mainly for the decentralization of bitcoin.

### Reply 3:
I'm making 7BTC per day with my avalons now. Next difficulty jump it will drop. By end of April or early may I'd bet its only 2-3 a day or less.It may be a long time to ""payoff"" an Avalon batch 3 order.

### Reply 4:
Mainly for the decentralization of bitcoin.[/quote]I just don't buy this...no one rationally does that in a commercial concern....they must be mining the crap out th BC before they sell them.

### Reply 5:
How many avalons do you have? My calculations show that 2 avalons should be making about 9 coins a day. But that's in perfect world...

### Reply 6:
Even 2 Bitcoins per day it will only cost you less than 2 months to get the investment back. Don't forgetthe price is still rising and we still have 3 years of current payment of 25 Bitcoin per block.

### Reply 7:
I just don't buy this...no one rationally does that in a commercial concern....they must be mining the crap out th BC before they sell them.[/quote]Avalon ASICs are manufacturing at least 100TH/sec of mining resource. That's a comfortable majority of the network. Confidence drops in the bitcoin network because one entity is in control. The price of bitcoin plummets because no one wants any part of a tainted network. Avalon get thousands of coins worth $0.0000001.From a commercial perspective, those working in the bitcoin currency are sensitive to the public's confidence in the currency. Avalon would be cutting their own throat if they mined with no competition.

### Reply 8:
if you would have a machine which could produce diamonds the size of a child's head - would you have interest to flood the market with it?

### Reply 9:
Even at 1btc a day mined thats less than 3 months back of the 75btc, even 0.5btc a day is a good deal. Or are you talking about the reward with mining with more than 1 avalon?

### Reply 10:
The thing is that is very difficult to make long-term projections on hashrate, this is why an estimatetion of ""3 months for ROI"" doesn't sounds that good in bitcoin world nowadays, while in the ""fiat"" world a 3 months ROI is an increadible deal.While you wait for batch #3, 2.5 months can pass. 3 months from that other players could be adding THs to the network, and difficulty could just skyrocket.Paying 20BTC for a 65GHs machine you will receive in 2.5 months or less is almost a no-brainer. Paying 75BTC is risky if you are in only for the profits, it's very likely that you will profit much more HOLDING those bitcoins.

### Reply 11:
When we ordered our Batch 1 Avalon in September, we started from an ROI of more than 6 months, as we had to accept that BFL and BAsic will be long on the market. And now here you talking about a risk if the ROI could be 1-3 months! Hello people!

### Reply 12:
Well, BFL could also hit the market in the meanwhile. But I surely doubt it

### Reply 13:
The ones selling the spades during gold rushes makes the most.

### Reply 14:
Bingo. 75BTC is guaranteed money right now for Avalon. It's also about 5x the price of the first batch at current BTC prices.

### Reply 15:
you guys are also assuming profitability based on current prices. If indeed we are in a huge btc bubble and it pops...avy may very well end up making not much / day. Meaning that .5BTC could be nearly worthless =( and that would suck.

### Reply 16:
and yet they are selling AA's for BTCso they don't seem to worried about that.

### Reply 17:
Except this time the gold can't get put into the banks, or confiscated.

### Reply 18:
Well, I bought my Avalon in BTC, and I want a ROI in BTC. I don't give a damn about btc/fiat exchange rate.

### Reply 19:
I am concerned about ASICMINER and their growth to 200 TH. If it is indeed true and so far they seem to be on schedule, the Avalons likely will still break even but the ROI time will be much more uncertain.<link> hope for the end-user sake, the Avalon team can get the machines out faster with the new equipment they're putting in!

### Reply 20:
Don't forget everyone gets hurt when the difficulty goes up but if you have a long enough time horizon, the box should ROI. 12 months is fine if that is what it takes.

### Reply 21:
Current total bitcoin network hash powerGPU+FPGA - 25TASICMINER - 12TAVALON batch 1 - 20TAbout 60TThis hash power will remain more or less unchanged until middle of AprilLater part of April:AVALON Batch 2 - 40TASICMINER 50T first deployment - 20TAbout 60Tconsider the shipping time, until mid-May, total hash power rise to 120Tdouble the current difficulty, so even the first batch 3 user will start with a maximum 2.4 coin daily returnMayAVALON batch 3<rest of thread truncated>
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    ""hardware_name"": ""BFL"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""ASICMINER"",
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU+FPGA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMINER"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AVALON batch 1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AVALON Batch 2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMINER 50T first deployment"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""AVALON batch 3"",
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  }
]"
20676,"Date: 2015-10
Topic: what mining software for multipool on Mac GPU?
### Original post:
Hello,What mining software to sue for using a mutipool (such as multipool us) using a GPU on a MacPro?

### Reply 1:
You cannot mine Bitcoin with a GPU anymore. You will have to head to the altcoin section;<link>

### Reply 2:
Uhh, there is no possible way to make money mining bitcoin with a GPU.It's that simple, you need to mine altcoins or the like. I suggest you do some research on mining before creating unneeded threads.

### Reply 3:
Its possible to make money with a GPU if you have free power.Mining altcoins is not as profitable as it was and you need to have very cheap power for GPU mining to be profitable.I suggest researching ASIC mining.

### Reply 4:
I do make money with GPU as well, but that is a discussion that belong in the Altcoin section. So it would probably be best to let this thread die or lock it, now.

","[
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    ""hardware_name"": ""MacPro"",
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    ""hardware_name"": ""ASIC"",
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23255,"Date: 2020-04
Topic: BlackArrow Prospero X-3 [Help] (2020)
### Original post:
Hi,I just bought myself the Black Arrow X3, for my personal collection of asics. But, I cannot connect to operate the machine. I saw that for the login it is: user = user, passworld = blackarrow but it shows me an error message that something is not valid. I contacted the seller and he said he knew nothing. Is it possible to reset the machine?

### Reply 1:
He might have sold you an unit which is affected by firmware virus. If he claims that he does not know what is wrong, that is probably because he was in same boat as you. Or he might have changed the password and forgot.But for your sake, try resetting your machine via reset button or recovery SD card.Also, isn't that unit like 5 years old? Why did you even buy it?

### Reply 2:
I make a collection of asic and I test it to find out how it works.

### Reply 3:
Check this post before firing them up, they have a history of burning down.<link>

","[
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]"
1748,"Date: 2013-09
Topic: [OPEN] HashFast Shares  ฿1.2 = 20GH/s | Ships in Nov *2nd Kit PAID
### Original post:
Im in for an upgrade!1 - I am on miner 12 - I have 2 shares3 - I am upgrading 2 shares - 0.8 BTC sent4 - TXId - <truncated> got a refund from a groupbuy that I no longer had much confidence in <truncated> my other groupbuys and seen this upgrade opportunity.Every cloud has a silver lining and all that!

### Reply 1:
Payment sent1. Miner #42. 1 share owned3. 1 share upgrading 4. <link>

### Reply 2:
Interesting! I have 1 share in miner #4, will upgrade for 0.8 BTC. Sending BTC soon with the format you requested. Thanks.

### Reply 3:
by bi-weekly, do you mean twice a week or every 2 weeks? i suspect every 2 weeks... but doesn't hurt to ask also: for those already using the service, have you broken even yet?

### Reply 4:
Here it is (0.8 BTC)!1. Current Miner(s) you have shares on: #42. Amount of current shares: 13. Amount of shares you are upgrading: 14. TxID for payment: <link>

### Reply 5:
You need my original payout address for miner #4? <truncated>

### Reply 6:
Hi I am in for Upgrade1 - I am on miner #12 - I have 4 shares3 - I am upgrading 4 shares - 1.6 BTC sent4 - TXId - <link> confirm.

### Reply 7:
Hi Wh , i'm in for upgrades ... 1) Miner #3 Miner #6 Miner #7 2) Miner #3, 1 share owned (x10 Gh/s) Miner #6, 4 shares owned (x20Gh/s) Miner #7, 2 shares owned (x20Gh/s)3) 7 shares upgrading for a total of 5.2 4) <truncated> confirm me, #bit_p

### Reply 8:
Hi,I have shares on Miner 4.I have 1 current share.I want to upgrade 1 share.The id is <truncated> payout address is <truncated> confirm.

","[
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    ""hardware_name"": ""Miner #1"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Miner #4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Miner #12"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Miner #42"",
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    ""hardware_name"": ""Miner #3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Miner #6"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Miner #7"",
    ""hardware_is_owned"": true
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]"
11328,"Date: 2023-07
Topic: Antminer S19 Control Board
### Original post:
The Antminer S19 Control Board is a powerful and essential component of the Antminer S19 mining rig. Designed to optimize performance and efficiency, this control board plays a crucial role in ensuring the smooth operation of your mining equipment.The Antminer S19 Control Board is engineered to deliver exceptional performance, allowing you to maximize the hashing power of your mining rig. With its advanced chipset and optimized firmware, this control board ensures efficient communication between the different components of your Antminer S19, resulting in higher mining productivity and increased profitability.The Antminer S19 Control Board features a user-friendly interface that simplifies the management and monitoring of your mining rig. With its intuitive design and easy-to-navigate settings, you can efficiently control various parameters such as fan speed, voltage, and temperature. To Know More:<link>

### Reply 1:
I think we all know what a Control Board is.However, what we don't know is why you're writing this, in a way worthy of an AI, and on top of that putting the link of a Whatsminer PSU which is completely off-topic.

### Reply 2:
I recently purchased Antminer S19 pro 110Th from 570OLLC. Here's the link if you guys are interested: <link>

### Reply 3:
Are you sure you purchased the s19 unit from that link?When exactly?Or are you just trying to promote it here just like on other forums with some other newbie alt accounts and trying to promote it with fake/sweet words?I'm talking about this forum as you can see all responses came from newbies so it's very risky to buy on this site.

","[
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    ""hardware_name"": ""Antminer S19 pro 110Th"",
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22937,"Date: 2019-05
Topic: (1) of (48) Avalon 841s limping
### Original post:
I have (48) Avalon 841s all using the latest low power mode firmward. ONE has recently started having problems:A841S-3-2 has failed to respond to reboots, power cycles, cleanings, etc. Any suggestions?

### Reply 1:
Go to CGMiner API Log, click on debug Switch to activate debug mode.Copy paste the log here in code tags.The important information will be just after the dna that ends in 13b9.

### Reply 2:
Code:[MM ID2] => <truncated> <truncated> Elapsed[5219] MW[1591415 1591748 1590827 1591123] LW[6365113] MH[0 3 0 0] HW[3] Temp[31] TMax[65] Fan[5790] FanR[100%] Vi[1207 1207 1205 1205] Vo[3962 3944 3985 3982] PLL0[0 0 2 4470] PLL1[0 0 3 4469] PLL2[0 0 8 4464] PLL3[0 0 47 4425] GHSmm[1419.68] WU[123332.54] Freq[79.36] PG[15] Led[0] PM[0] ME[1 1 1 1] MW0[41 40 40 34 36 38 37 39 36 38 40 44 37 39 35 36 39 40 35 44 33 33 38 54 44 36] MW1[33 36 35 37 41 39 35 28 43 33 28 37 36 45 36 39 41 43 33 38 31 41 45 33 49 38] MW2[34 42 30 41 32 49 37 42 42 30 35 44 46 38 31 45 41 35 51 36 34 48 34 42 33 43] MW3[38 41 47 40 37 35 44 52 38 31 39 38 39 32 31 29 42 35 33 44 33 38 43 27 30 43] TA[104] ECHU[0 0 0 0] ECMM[0] FAC0[4 0 0 0 0] OC[0] SF0[0 0 0 500] SF1[0 0 0 500] SF2[0 0 0 500] SF3[0 0 0 500] PMUV[0000 0000] PVT_T0[53 54 56 56 58 58 58 60 61 60 60 60 59 59 59 59 58 61 59 59 58 57 57 55 55 55] PVT_T1[53 54 56 57 58 59 60 60 60 60 60 60 61 60 60 60 60 60 59 59 58 58 56 56 55 55] PVT_T2[55 58 57 56 58 59 59 60 61 61 63 61 61 60 61 63 61 60 61 60 60 58 57 56 55 54] PVT_T3[58 58 58 59 59 59 59 60 59 59 61 61 59 62 61 65 60 59 60 60 58 58 59 58 57 55] PVT_V0_0[755 755 384 383 1 895 901 747] PVT_V0<rest of post truncated>

### Reply 3:
Check the power connectors. PCIe connectors can get problems over time especially if you <truncated> them. Also of course the PSU - swap it with another PSU and see if that's the cause.Also ... miners do fail ...

### Reply 4:
This and also it looks like you are running two different MM'sCode:[MM ID2] => <truncated> <truncated> ID3] => <truncated>

### Reply 5:
Ancient history, I suppose that was possible. I do recall the MM flashing not being clean and having to repeat it a couple of times on some of the PIs. Guess I missed that unit when checking.Thanks again.

### Reply 6:
Thanks for catching that. The problem child was the ONLY unit running the older MM. Not sure how it was missed when I upgraded last time.After re-flashing MM, the unit appears to be working fine.RE: Power... I've come to trust the PG ratings displayed on Avalons. Anything other than 15 is a problem that I fix. This unit was 15.

### Reply 7:
Did you flash the pi first and then the MM's?, it might have started one of it's restart loops while the upgrade was in progress. I've never had that happen but I have had the restarts interfere with commands.But glad it's working now.

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]"
12129,"Date: 2012-12
Topic: CGMINER GPU FPGA overc monit fanspd RPC stratum linux/windows/osx/mip/r-pi 2.9.7
### Original post:
Either I was too quick on the draw or you have not updated the version string as a fresh git clone tells me I will compile a version 2.9.6.

### Reply 1:
You're right, it wasn't tagged. Tagged now (and be aware it's on the 2.9 branch).

### Reply 2:
The rewrite of how work is gathered into a getwork scheduler is well underway and in the git master tree now undergoing testing. It would not be surprising if it introduces new instability, but I'm hoping for the master branch to be tested and debugged over the next week paving the way for the next version. For what it's worth, it's currently running fine for me. Other goodies including new mmq and ztex code are in there too.

### Reply 3:
Just experienced a crash with cgminer 2.9.7 on Windows. Two miners crashed at the same time. I'm using stratum on BitMinter. Didn't have any crashing problems before with 2.9.x versions, and I saw this on the patch notes:""Windows builds are built and shipped with a new libcurl (and libusb) dll that hopefully improves stability.""Could this be actually causing problems instead of improving stability? If it's possible, I'd be interested in trying out a build with the old dlls.

### Reply 4:
No, likely it's the same windows special crash to do with internet going down which has been there a while. The new dll was there in the hope it fixed this, but obviously it does not. Anyone debugging on windows could you try the instructions and builds in <link> and use the debug build of libcurl dll that's in there as well please. Thanks.

### Reply 5:
I just did a git pull to update cgminer on my rigs, and I noticed that it says I'm running version 2.10.0. Did I time warp to the future?

### Reply 6:
Nope. It's not tagged as such, but it's there to demonstrate the substantially different code base if anyone's running it. That will be the version when it is finally released. Release versions are tagged in git (except when I forget to do it).

### Reply 7:
Dang. I was hoping I just figured out how to time travel.

### Reply 8:
Shit if you did that, you'd go back and mine with your current hardware 2 years ago.

### Reply 9:
Do we finally have an answer for February/March of 2011?!<link>

### Reply 10:
Any idea why 2.9.7 seems to crash every 10 hours, while 2.9.6 ran just fine untouched for days? I'm on my normally w7, 4x7970 set up.

### Reply 11:
The only crashes I have seen with 2.9.7 is when a backup stratum pool goes down, back up and then down again. If the backup pool stays down or stays up, it doesn't seem to crash.

### Reply 12:
<Farnsworth>Good news everyone</>Okay after a day of debugging on windows, I found the disconnect crash bug was actually in libcurl itself, which was rather awkward but anyway it means it should get better if you download and use the following dll instead:<link> put it into your cgminer directory, replacing the existing libcurl dll.EDIT: I've repackaged the 2.9.7 release for win32 as 2.9.7-1 including the fixed dll. I urge anyone on windows to update at least the dll. The package is otherwise the same version of cgminer.EDIT2: Bug submitted to curl maintainers so hopefully it will be fixed next version: <link>

### Reply 13:
<truncated>

### Reply 14:
New release: Version 2.10.0, 10th December 2012Huge upgrade of lots of code and features, so comes with the usual warnings about potential instability of the new version.Human readable changelog:The main change to this is a completely new work scheduler where all work spawns from. The old work scheduler would spawn threads that all tried to grab work as best as they could, and this would lead to much more work than necessary being grabbed from getwork pools, and potentially hitting the pool at precisely the same time from multiple threads making a getwork failure more likely. It was also very difficult to track how much work was really available at any one time since all the threads were off doing their own thing. Centralising the work creation means it is strictly tracked now and as soon as one work item is taken, the scheduler will generate or download another one. The advantage here is to maximise the amount of work we can get from any source, be it getwork without rolltime, with rolltime, gbt, or stratum, or combinations of the above. It is also much less likely to have dips in providing work, should lead to less getwork failures, and scale to higher hashrates even with the old<rest of post truncated>

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20489,"Date: 2015-07
Topic: eVGA Supernova 1300 jumper clip
### Original post:
I have a eVGA SuperNova 1300 that I've been using for a while. I had a jumper wire between two pins on the back to allow the unit to turn on.Originally I found a picture that showed where to place the wire. I am searching but can't seem to find the picture or description where to putthe jumper wire. I would appreciate if someone could provide this information so I can get that PSU up and running again.Or if you can simply take a picture of your PSU with the wire in place, that would be great.Thanks in advance,Tom Travis

### Reply 1:
Here are a few sites - <link> and <link> With the EVGA 1300 I believe it's a all black wire if it's like mine so you would need to make sure your looking at motherboard power cord in the right direction. And then count to find the spot as there is no green/black as normal colors.

### Reply 2:
this is not a technical support question. this is a miner support question.belongs here<link> for what pins. the evga 1300 comes with a jumper I will photo the jumper give me a few minutes.note I asked mods to move this.and these photo should be your answer

### Reply 3:
Another useful option is to look for an ""ATX Power Supply Jumper"" on Ebay or Amazon. Yes, it costs more than a paper clip, but makes things so much easier. Less than $5.

### Reply 4:
Still not getting it.... It was simple the first time around.I thought I read something off the eVGA support site that said on the 1300, if you put a jumper in the hole just below the ""V"" in EVGA and also the one to the right..... I am not sure, but it worked before.I do not have a motherboard cable for it and all the pictures show the motherboard end. I want to jump it right at the power supply with no cable.Thanks,Tom

### Reply 5:
Thanks,I got it to work, but 11 & 12 is not what you have in the picture with the clip. Your clip is in position 10 & 11.11 & 12 are one in from the edge (next to other connector), on the clip side, and are Green/PowerOn and Black/Ground.

### Reply 6:
yeah I had an oversize paperclip it popped out 2 times and the last time I got it to stick in I did not realize it was shifted over one hole. It still worked which was impressive.I bent the paper clip better today and shifted it over one. it now works. I am pulling those photos.

### Reply 7:
ah drama if you give me an hour I will figure it out and post it .try 11 and 12 on the psu I got it to work see photo

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16133,"Date: 2021-09
Topic: Innosilcon is trying to get rid of heavily used miners
### Original post:
Innosilicon is offering ""manufacturer refurbished"" T3+ and other miners. I ordered a T3+ 57T Bitcoin miner. I had to wait for 4 weeks after I paid in full in Bitcoin until they shipped it out. When it arrived it was in horrible condition: <link> of dust, with scratches, stains, missing screws, rattling parts, rust...The firmware was locked and I was not able to enter my own pool settings. There was plenty of evidence that this miner was not manufacturer refurbished, not even cleaned. Otherwise at least the firmware would have been reset. Innosilicon has 3 departments: while the support is trying to help to unlock the miner, the sales and order team tells me: ""This is what you get when you order from us. Deal with it!""

### Reply 1:
I think other ppl here ordered the refurb T3s. Would be great to have their feedbacks!

### Reply 2:
Yes, please. Who else bought a refurb T3+ ? What was your experience?

### Reply 3:
have you ever got to the bottom of the pool settings being pre-completed and not updating ?also, sorry to hear about your experience, I hope it all goes well in the end

### Reply 4:
Yeah, they use the term refurbished for a miner that was damaged and repaired by them or something returned and they've set it back running. They did warn a bit but you didn't take the warning seriously, usually in those cases light scratches mean run over by an excavator:Sucks and if I were in your place, even if support manages to help you unblock the settings I would play possum and try to get a refund and send it back. I won't be surprised if that thing wouldn't break in a few months, external scratched and missing screws ain't a big deal but you should take a look inside if possible and have a beer nearby when you do

### Reply 5:
Refurbished miners could be a great bargain if you get a diamond in the rough with no issues but that is playing a dangerous game if there is no warranty attached to them. Depending on the price and time to get to you it may pay itself off quickly but if it breaks it could quickly become a paperweight or something that ends u costing what a new unit would plus the downtime to ship it back for repairs. Would love to hear feedback as well from anyone who bought one.

### Reply 6:
Those Innosilicon refurbished miners are 6 months garanty

### Reply 7:
You are right with the firmware lock, but this is a straight-out scam if you ask me, these were supposed to be ""manufacturer refurbished"", the ones in the video don't look anything like it, in fact, REAL refurbished miners are a lot more expensive than clean used miners, a while back used S9js were going for $250 while the refurbished once were going for at least $400, but those looked as good as new, no scratches, no lost screws, everything seemed like brand new, the miner in the video is a Used Miner with C- condition, selling it as a refurbished piece is nothing but scam IMO.

### Reply 8:
Looks like this is a rare problem that has happened before.There are threads about a T2 miner that had it on here.. also one on the russian mining board:<link> might need to do a translate on it with your browser)Post 11 reads:Maybe worth reaching out. Seems they found someone at Inno that can unlock it remotely for you.

### Reply 9:
Watching some videos from your YouTube channel and I like the soundproofing you have setup. I'd probably be mining with more hashrate at my home if I had such a setup as well. I should also mention that I thought for a second this was a bodybuilding YouTube channel instead of being about Bitcoin mining. From the look of your biceps I thought you might go hulk and crush that thing when it wasn't working.

### Reply 10:
Interesting , they do that constantley , I heard that their ceo is a close friend to the founder of ETH

### Reply 11:
Figured they would carry some sort of limited warranty. That said, considering Inno was made aware of the Fixed Address issue on at least some miners and quickly responded by putting out a fix for it one can't fault them for their response on that part. They also said they were going to issue a mass email to all customers who bought one of the refurbed miners to notify of them of the possible problem and fix for it if they received a miner that was locked. Hopefully the OP just got a miner that had already been shipped just before Inno became aware of the problem and the miner had yet yet been updated to OEM firmwareMy take on things is that the miners are of course from some of the farms in China that got shut down. It makes sense that a farm would use locked firmware to make sure there is (near) zero chance of miners being hijacked either through hacking or actual theft. If stolen, as soon as the miner goes on line Inno will know which miner and what the ip address is.Biggest problem is Inno dropping the ball on making sure the miners are at least cleaned up and along with that definitely reset back<rest of thread truncated>
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10441,"Date: 2017-08
Topic: What conformal coating is Bitmain using?
### Original post:
Anyone know what coating is on Bitmain's units (at least on their newer ones, S7 onwards)? It's tough as nails. I'm wondering if it's an epoxy.

### Reply 1:
Coating on what part of the miner? I have 7's and 9's.

### Reply 2:
The coating on the hashing circuit boards.

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5008,"Date: 2013-05
Topic: FGPA Gerber Files
### Original post:
I have the opportunity to produce FGPA, so documentation is key.Also a good start to see how open source is the FGPA community.Any Gerber Files for FGPA ? based on Spartan 6 (XC6SLX150) or others...Thanks

### Reply 1:
At the moment, nobody has published free/open gerbers for an FPGA miner. Schematics are available for Icarus though.-rph

### Reply 2:
Is this still the case? no gerber file available for experimentation?

### Reply 3:
look at lancelot boards there all is opensource

### Reply 4:
It sounds like you want to check out Icarus and Lancelot at <link> For the PCB there is more information than the PDF as there are also .SchDoc file - I don't know this filetype but from googling it looks like it is the file type for creating a PCBs in Altium.

### Reply 5:
thanks bro.

### Reply 6:
all fascinating reading, couldn't locate any gerber files sadly though..are there any gerber files in circulation now 6 months down the line from the original post?

### Reply 7:
<link>

### Reply 8:
questions is how cheaply you can make fpga with the require hashing power compares to asic ...??

### Reply 9:
The board itself is around $50, some companies offer free or almost free pick and place service if you order some decent qty. FPGA is expensive, it is possible to get volume discounts if you go bulk. You can buy a ton of used FPGA chips on ebay do chip recovery

### Reply 10:
before I ask this question, I will first apologise for being a philistine.. could someone link me to the specific gerber file for lancelot? I have the link to the github but am unsure which is which file. i'm new to this PCB business.

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15702,"Date: 2016-02
Topic: PSA for those using Linux Mint on their Mining Platforms
### Original post:
There's been a breach on the linux mint servers: the hacked install .iso has a baked-in unix trojan and if you have your pool info saved in plaintext (as most mining packages require you to in .conf files) tour entire platform is at risk. if you have a recent install or upgrade this DEFINITELY concerns you<link> you want to continue using mint download it from the torrent, if you're fed up like I am there's plenty of other options

### Reply 1:
The bitcoinist article says that a lot of miners use Linux Mint. Is that true?

### Reply 2:
I've seen a lot of posts here about it, and I did on my old GPU mining rig. I'm sure it applys more to altcoin miners but the fact pool info is saved in plaintext in a lot of cases makes this a huge concern for the folks that do.

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924,"Date: 2013-07
Topic: CLOSED - [Worldwide - Group Buy #2] Block Erupter USB 1.08 each
### Original post:
Any more GB's in the near future?

","[
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9289,"Date: 2015-08
Topic: Overheat Protection for Antminer S5 50cent cheap, 100% safe and easy to install!
### Original post:
Hi friends,after many months of bitmain's refuse patch a bug which causes fatal overheat to our S5 during internet connection fail I decided to make my own protection independent to miner software and not void our warranty. So again, THIS MOD WILL NOT BREAK YOUR WARRANTY. Just remove this mod before RMA.If you ask how, the answer is super easy - bi-metal thermostat, similar which is used in professional lighting devices, battery packs and many other devices which needs reversible protection fuse. I purchased it from e-bay, for example: 10PCS KSD9700 Bimetal 90 Degrees NC Temperature Control Switch For Transformers<link> pcs for less than 5 bucks with free shipping! You can use any temperature you wish to shut your Antminer down, but it MUST BE ""NC"" version - Normally Closed. This one shutted my S5 at 101C which is still acceptable as critical overheat temperature. This switch will shut down PSU, so NO POWER comes to your S5 until it cools down about 10 minutes, then it power on your S5 back.<link> bimetal switch between heatsinks.<link> not remove the silicon sleeve, it prevents the switch to move out.<link> your paper clip from your PSU and connect the your new bimetal switch on p<rest of post truncated>

### Reply 1:
This looks like a good solution. 90 degrees between the heatsink is very hot. 80 would be enough imo. Good work!

### Reply 2:
This is the best hint I've seen.Simple and genious.Thanks!

### Reply 3:
the idea is cheap but to be really sure do two things the op's and Just add a fan as a pullconnect it to your psu for power not the s-5 and leave the stock fan connected to your s-5.<link> cents plus 4 bucks = $ 4.50 a minerpretty much fool proof with the two combined

### Reply 4:
Thanks! The chips survive extreme temperature while running, I had some failed due to internet connection lost and some chips were unsoldered (about 180C at chip package, so die could be 200+). After pressing them back to PCB hash board worked again. That is why I choosed 90C. It is up to one's decision which temp is safe.I think it is very clever idea to remove side panels and check temperature of each chip during operation to make sure all chips are cooled properly. I found some chips are over 100C while S5 shows 55C only. Repasting helped a bit.

### Reply 5:
A Very Helpful method, Thanks mate for sharing.

### Reply 6:
waw great idea man.. it cheap too, thanks for your idea, i will order it.

### Reply 7:
Yes, doubling or quadrupling fans make it yet more fool proof. You can also quadruple fans and each of added connect to separate PSU connected to three different UPS each at different network phase

### Reply 8:
I have an S5 that managed to burn a chip. If bitmain honours their warranty and send me a new one, this will be implemented.This is a reasonable alternative to using aftermarket fans. The issue I see with aftermarket fans is they may not provide the same CFM air transfer as the stock fan unless mounted in some less than conventional configuration, such as 4x fans set up in a contra-rotating fashion (two per end - soldering fun).(see <link>

### Reply 9:
Wow I did not know that such a component existed.Ordering now.... Thanks.Make a new BTC Address (just for privacy issues on your wallet) and post it in your signature and I will make a small contribution.I tested all of my S5's for the overheating due to loss of internet and found some that will.If i disconnect the Cat 5 Cable or Power down my switch/hub then all my miners will eventually stop hashing and will cool.If I just reboot my ISP cable modem then some of my miners will get extremely hot (over 85c) and not Auto Shutdown even though I have ""Stop running when temprerature is over 80"" checked.It is like they think the Pool is still live because the Cat-5 cable is still connected to a live connection (in this case just a switch) but it has nowhere to send the hashes.as soon as the WAN becomes active the S5's start to cool on their own because the hashes are now getting sent to the pool.I was concerned if I ever lost my internet connection for more than a couple of minutes. how many miners would I lose.With this easy solution I am greatly relieved, and cant wait to receive them and install these switches.

### Reply 10:
I prefer my 0 cost method, especially since I want the fans to run at 100% constantly anyway for maximum cooling and maximum lifespan of the S5.

### Reply 11:
Great idea. I wonder if there's any way to adapt that to use the server power supplies.

### Reply 12:
Of course you can. Just wire the switch(s) in series with the PSU's control pins and your external on/off switch. If you are using the GekkoScience breakouts for IBM 2 or 2.8kw PSU's the control switch will select either local (just the switch) or external control. Use the external setting and wire as needed to toggle the on/off.Since the GekkoScience look for a<rest of thread truncated>
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13803,"Date: 2022-11
Topic: HELP -BMminer Version and Harware Version not found? Ebay purchase??
### Original post:
Hi AllJust purchased a miner of Ebay secondhand and plugged in to test its on old FWMiner TypeAntminer <truncated> VersionKernel VersionLinux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018File System VersionFri May 31 10:59:27 CST 2019Logic <truncated> VersionUptime9Load Average0.30, 0.30, 0.14Been running for over 40 mins and done one reboot, tried flashing with older Bitmain FW , fixed and auto frew, will not as its SSH locked.I don't want to install BrainsOS yet as i may have it to return and have yet to find a way to downgrade from it (could i generate a backup and restore from there after flashing Brains via NAND/SD?)Kernel log below-[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 total<rest of post truncated>

### Reply 1:
Where or what pool do you mine? Check carefully if you pasted it with extra spaces or letters because the miner will not work properly if the Url has extra spaces or extra letters.Another thing is your internet may be very slow and unstable plus the pool server you use has a high ping.Why not test it with BraiinsOS? If your concern is you don't know to put it back to stock firmware why not just boot the miner with an SD card instead of flashing it directly to the nand?

### Reply 2:
Brainspool as with all my other miners, all pool details are correct,I have messaged seller and he has stated to try hard reset, then upgrade.Also i'll download the file and try the run from SD card.CheersUPDATE 1 -I changed the pool details from older slushpool to newer brainspool and it's working?When i entered the original details i just copy/pasted from a miner already running on older slushpool urls? UPDATE 2 -To run from SD card i presume you still need to move jumper 4?Can someone confirm this please.ThanksI always copy from the same miner out of habit....Very OddAlso where are the details to downgrade from Brains to the older Bitmain FW i have 500, 550, 600, 650 fixed plus variable FW that i used to use and i find some boards will only run on older FW?I can't find the downgrade guide, i presumed flashing BrainsOS would remove the SSH lock and allow you to flash anything?Cheers

### Reply 3:
Why don't you just go check and read the braiins documentation about reverting or flashing it back to factory firmware?Check this link <link> about JP4 if you just want to boot it to braiins without flashing it then you need to download the right firmware there are two options to download, the one is ""auto-install to nand"" and ""Run from SD card"" download the ""Run from SD card"" and paste the contents to SD. And then if you want to boot it don't forget to move the JP4 it is the same as how you flashed the unit before but this time if you move the JP4 to the original position then the miner will boot to the original firmware.

### Reply 4:
Thanks, that's the link i was looking for, i could not find it. I fully understand the process to upgrade via SD card and run from SD card now, plus you have to flash the image not paste to the SD.Even after reading it i'm totally confused as it uses uses command lines etc and SSH? I was hoping to find an explanation for this tbh as once i have done it once i presume i will understand and find it relatively easy and i can help others like you.Even afetr reading how to 'downgrade' and have the old 'Community Edition' FW that i thimnk they now label it i do not understand how to flash it..Thanks for replying and being undertanding, i'm getting there slowly, the tjought of installing BrainsOS seemed complicated at first now i find it simple.Hopefully i can do the same to downgrade and understand how to use these commands and flash back older 'community fw' i have.....

### Reply 5:
You don't need to ""install"" Braiins OS to try it, just run directly from SD, no need to touch NAND ever.You should go with Braiins OS+ which is very simple, you really only need to set up the pool and set a lower power limit value (such as 1280W).With manual values you can easily damage your machine if you are not careful. Defaults should work but for testing you should at least lower the speeds (defaults to 650Mhz). Remember that there is no support with the community edition, you are on your own.Considering you are using Braiins Pool you should go with Braiins OS+, since the 2% pool fee is returned to you when you use Braiins OS+ with it.This won't happen with the Community edition or other firmware, you<rest of thread truncated>
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8918,"Date: 2015-03
Topic: SP10 Ignites!!!
### Original post:
could it be dust? I always worry about this for any miner-eager to see the cause.

### Reply 1:
pics or it didn't happen

### Reply 2:
Which part of the SP10 started the fire? Would be v+helpful for debugging. My guess is a wrong voltage rated cap.

### Reply 3:
""i'm not buying GEN2 because GEN1 had an issue""like...""i'm not eating steak because the chicken is bad""

### Reply 4:
Now you are just being silly comparing an SP-T miner to an AM. Also use imgur for pics...yours are proxy blocked.

### Reply 5:
All they're seeing for now is ""bitcointalk.org image proxy: Invalid image""

### Reply 6:
LOL Raskul, I am not buying it because they are over priced, which was ""excused"" because they were a ""better"" built piece of hardware. I NO longer believe that and in fact I would say these POS are REALLY EXPENSIVE AM Tube dangerous. So anyone from SP-T see the problem? This machine was running in a Rack with 29c intake temps, on 220v power.

### Reply 7:
Looks like a suspicious link:Most likely an attempt to discover IP's.

### Reply 8:
I wish I was, thank GOD I was on site when it went up. There were visible flames as I reached to pull the plug.Sorry for the technical diff.. had file permissions set wrong, vpn is under repair..

### Reply 9:
LOL even the peanut gallery?? S.A.D

### Reply 10:
While I can not rule that out, the 33 other machines in the room seem to suggest different. Obviously the board is NOW dirty, cap blew dust everywhere. Guess I need to pull a board tonight.. JOY!!Really I would say the heatsink came loose/ lost contact to that section of the board. Since I was unable to speak to machine had to do a hard reset, the temp of that asic bank was probably reason for machine hanging. Lesson I suppose is after a few months of ops, you should tighten mount points. Now where is my SP10 manual, maybe their website.. HAHAHA LMAO yep ""The best CS and most professionally built"".Might want to shut your SP10's down for a quick inspection!

### Reply 11:
Ok, so you want to play the part of being an intelligent human being? I got you covered.First, [all!] Electronics fail. Yes, even medical grade electronics that are critical for sustaining a life. (redundant electronics necessary)Second, you seem ""surprised"" because an SP10 caught fire, you therefore seem to consider it an issue of quality.You also stated ""you were lucky"" because you were there to pull the plug. (?) <--I am guessing you aren't properly hosting said device to be worried about burning down the place where you host them.Not taking appropriate precautions is the bigger issue to keep in <truncated> I see your SP10 did fail, (like all electronics from all manufacturers eventually will).The question is, how often do these fail when operated properly.I don't recall seeing many SP10's failing in this board. So I assume they are safe enough.But don't take that as a sense of false relief, instead be prepared for when they do fail.You stated you have ~40 some Ant miners. I am guessing you haven't set those up either in case of a fire in one unit.Again, you don't sound like you are prepared for that <truncated> --> STOP overreacting.There are no hardware from all these manufact<rest of post truncated>

### Reply 12:
LOL You have an amazing ability to remote view my mind and my data room, WOW!I did not say Thx GOD, because I was afraid something was going to destroy my place. Even it I had let her burn at best it would have caused the building to stink. But hey thx for the free anal-lysis it was really helpful.Likewise I agree shit fails, the difference is will it catch a blaze. I have had several ants fry the difference being they popped, smoked, dead. This SP10, like the AM Turds, caught a blaze which did not extinguish without aid. Thus FIRE STARTER!

### Reply 13:
Sometimes stating the obvious is necessary.Try not to make a fool of yourself.

### Reply 14:
What on Earth are you saying? How do you even know one thing about my preparedness?

### Reply 15:
I've had two SP10s in my custody for hosting since about July, and this has happened to me three times (twice on one machine). One of them blew a VRM in January when the intake temps were about 14C. That grey bead to the uppper right corner is the only connection between your VRM/bank and the 12V rail, which means if you're worried just remove it and thew hole burnt section is now electrically cut off. Both my SP10s still work at reduced capacity.

### Reply 16:
When we're talking about fire, is it safe to assume that this one self extinguished?

### Reply 17:
Thanks for that HELPFUL comment sidehack, that would be best case to save the remainder of the board's functionality.

### Reply 18:
Negative, had to pull from rack and extinguish with wet towel. Did not want to over react and kill the room.

### Reply 19:
I just bought a 15# halotron for events like this. I would recommend the same. you can get them NOS for around 120-150$shipped on ebay

### Repl<rest of thread truncated>
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23334,"Date: 2020-09
Topic: HELP with 2 T17+ :(
### Original post:
Nothing really changed, so try using different firmware. Also, do not hope for PSU. Bitmain will NEVER send you parts on their own even if you beg. You either buy it and hope it is the fix or you RMA it. But before that try firmwares and check visually tomorrow.

### Reply 1:
I have 2 T17+ suddenly i have dropped hashboard on both and different kernel logsthis is one :Code:0xdanand: Micron <truncated> 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 128nand: WARNING: pl35x-nand: the ECC used on your system is too weak compared to the one required by the NAND chipBad block table found at page 131008, version 0x01Bad block table found at page 130944, version 0x016 ofpart partitions found on MTD device pl35x-nandCreating 6 MTD partitions on <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : ""reserve1""NET: Registered protocol family 10sit: IPv6 over IPv4 tunneling driverNET: Registered protocol family 17can: controller area network core (rev 20120528 abi 9)NET: Registered protocol family 29can: raw protocol (rev 20120528)can: broadcast manager protocol (rev 20120528 t)can: netlink gateway (rev 20130117) <truncated> no compatible node found for <truncated> Unable to map DDRC IO memory.Registering SWP/SWPB emulation handlerhctosys: unable to open rtc device (rtc0)ALSA device list:No soundcards found.RAMDISK: gzip image found at block 0EXT4-fs (ram0): couldn't mount as ext3 due to feature <truncated> (ram0): mounte<rest of post truncated>

### Reply 2:
First one is odd one. Looks like failed tune. I'd try custom firmware for it.Second one is even odder one. It noticed the second hashboard at start and then after voltage check it just decided to ignore it... Try checking if PSU has good connection with your hashboards and check all the cables, especially the ones that are for data.Also, a little bit of history on units would be useful. Are units new? Did you modify them or clean them in any way? Did you try custom firmwares on those machines? What voltage are you using? I assume it's 220v.

### Reply 3:
Both new. the first one was a replace from bitmain and the other one from june. I clean them two days ago gently with a painting brush the front part they were working perfect and the error ocurred after electricity was gone like one day ago never custom firmware and voltage always 220. Maybe elctricity gone burn the psu?Do you have a link to a video on how to open psu and what cables are you referring to.Thanks!first one repaired i reupload firmware. but the second one still saying <truncated> 20:19:24 <truncated> Chain [0] PCB Version: 0x01002020-09-12 20:19:24 <truncated> Chain [0] BOM Version: 0x01002020-09-12 20:19:24 <truncated> Chain [1] PCB Version: 0x01002020-09-12 20:19:24 <truncated> Chain [1] BOM Version: 0x01002020-09-12 20:19:24 <truncated> Chain [2] PCB Version: 0x01002020-09-12 20:19:24 <truncated> Chain [2] BOM Version: 0x01002020-09-12 20:19:24 <truncated> Fan check passed.2020-09-12 20:19:25 <truncated> chain[0] PIC jump to app2020-09-12 20:19:27 <truncated> Check chain[0] PIC fw <truncated> 20:19:35 <truncated> Chain[1] PIC init failed!2020-09-12 20:19:35 <truncated> <truncated> 20:19:35 <truncated> chain[1] PIC jump to app2020-09-12 20:19:52 <truncated> Check c<rest of post truncated>

### Reply 4:
Could be when electricity went down (and maybe up in same time) voltage hurt the PSU. Everything I said still stands. Try custom firmware with underclock and check the cables but if they are new from Bitmain, cables should be placed perfectly. PSU is connected via plates, they should be connected well, and it should be easy to differentiate Data cables and Fan cables. I do not know of any specific video, but you could look into ""teardown of Antminer S17"" or something like that on youtube. Otherwise, you can just start unscrewing screws and make sure you do not forget which go where as there are different ones (take pictures).Or if you are scared to do that, just skip that part and try custom firmware and RMA the units if even that doesn't help, or just RMA right now.Also, it should be obvious, but you should have already tried different PSU cables as well as rebooting miners 2-3 times just to make sure it isn't a bug in software (not that they happen often or ever for that matter).You could also try different power outlets.There is 20+ threads similar to yours which have problems with 17th series, so you can check them for more tips.Also, if you cleaned them gently as you say (with<rest of post truncated>

### Reply 5:
the first one i did several reboot and only with new firmware was solved and in the second one couple of reboots new firmware and still this in the logCode:2020-09-12 20:19:35 <truncated> Chain[1] PIC init failed!2020-09-12 20:19:35 <truncated> ERROR_PIC_LOSTfully on and one hasboard down.

### Reply 6:
That still not a full log.This could be firmware screw up. Try using older firmw<rest of thread truncated>
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11708,"Date: 2011-12
Topic: Catalyst 11.12 Mh/s decrease documentation thread
### Original post:
This thread is for reporting hard numbers of how many mh/s the newest catalyst is taking away from your mining. Please post your card, software, etc, with as many numbers as you have. 11.11 and 11.2 Catalyst both steal mining speed and may or may not fix the 100% cpu bug. Here is what I found across three cards. These numbers were obtained under win7 64-bit with guiminer and phoenix using phatk2 pre 11.11 immediate 11.12 rebooted 11.12 restored to pre 11.11xfx 6950 363 294 352 380asus 5850 cu 372 266 316 373asus 5850 cu top 364 283 284 365 =1109 mh/s =843 mh/s =952 mh/s =1118 mh/s @ 425w @ 405w @ 436wcolumn 1 is the rig before installing 11.11 or 11.12. column 2 is after results, before a reboot, which wiped away all the overclocks but not volt mods. column 3 is a fresh boot with 11.12 installed and overclocks set to match the original system. column 4 is the result after copying back the 6 files needed to revert- which somehow jumped the 6950 by a extra 17 mh/s but at a heavy cost of 11 extra watts. Temperatures stayed within 1 degree for all testsThe 100% cpu bug only went away IF aggression was set to 10 or lower. At aggression 13 the three instances of phoenix battled each othe<rest of post truncated>

### Reply 1:
I'll confirm from past experience that anything past 10 aggression causes high CPU, but only on single card setups. Multicard setups have cpu bug no matter what for me. People say cpu bug is gone on the very newest AMD APP 2.6 + OpenCL 1.2 + Catalyst 11.12/12.1, but I can't justify the huge hash speed loss over maybe 10-15 watts since I'm already hugely underclocking my cpu from 2.4ghz to 800mhz.Gaming PC - Sapphire 5830 Xtreme - 950/1125 24/7 - Mine off and on depending on gaming activities, about 295 mhash when not using PC @ aggression 5. No CPU bugSpare PC - Sapphire 5830 xtreme - 980/330 - Sits outside in the winter cold, 316 mhash @ aggression 10. No CPU bugLiving room - Sapphire 5830 xtreme - 925/330 - Limited airflow/dusty. 298 mhash @ aggression 10. No CPU bugDedicated - Sap. 5830 @ 975/330 + Asus 5870 @ 975-1085/330 (depending on severe cold weather, heatpipes freezing) + MSI (?) 5870 @ 1085/330 - Sits outside in the winter cold. Currently ~315/~480/501mhash @ aggression 14. CPU bug persist across all aggressions. Using 11.11 on all except gaming PC which uses 12.1 but AMD APP + OpenCL has been reverted to the version that comes with 11.11.

### Reply 2:
I'm running 11.12 but regressed to SDK 2.4 and I'm running at full speed on my dual GPU 5970. But with the latest and greatest SDK (whatever came with 11.12) I was down about 50 MH/s per core. If you want to try going back to an earlier SDK, you might want to try deleting the following files <truncated> some reason these files aren't removed if you do a complete ATI uninstall (at least for me they weren't).

### Reply 3:
Thank you to Mousepotato for providing the list of files to remove before downgrading the OpenCL runtime. Previous attempts at reverting had failed to recover lost performance.I've now regained ~20MH/s on a 5850 and ~10MH/s per 5830.Edit:I'd forgotten that I'd switched to the phatk kernel since it seemed to perform better with 11.12's OpenCL runtime version. Switching back to phatk2 with the 2.4 runtime yields +5 MH/s/card.

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11302,"Date: 2023-05
Topic: This store is safe?
### Original post:
<link> prices of some items seem normal to me, others a little too cheap according to my tastes ...Does anyone know him??

### Reply 1:
Their reviews would suggest they're a scam: <link> Their web address isn't great either - ""icon miners"" sounds like something that doesn't make sense and they could happily change. How did you find the site? Was it an ad or a search result or did someone/somewhere recommend them?

### Reply 2:
Probably a scam website, I took a look, and nothing seems too cheap to begin with, could you point out what are the cheap deals listed on these websites and what type of miners are you interested in? I will give you the actual market prices in China and Hong Kong.

### Reply 3:
Be careful I tried to check their few pages it seems that their website is not finished yet there are some pages that do not have content and after checking the source code of the website they are using CMS WordPress. And most of the product they sell looks like used units that do not exist. They are also selling Innosilicon units which don't have any support anymore.So there is a high chance that this website is scam.If you are looking for cheap units why not buy directly from Canaan they have pretty cheap units with the same hash rate.

### Reply 4:
Why go for an unknown site, yet there are a number of popular official online stores. Just checked the site and almost all the brands have officlal online stores or verified resellers.My friend, prevention is better than cure. Don't so something you will regret later just because it was a few bucks cheaper.

### Reply 5:
I found the site while wandering the internet and I was intrigued.<link> are the ones that intrigued me.currently I don't want to buy other asic, it weighs me to anticipate again for the next bull, but if there is some good deal I can't miss.I don't buy the caanan units because of the type of single c19 socket which with 15A would force me to make changes to my electrical system.

### Reply 6:
Why keep listing links to a site that is clearly a scam?

### Reply 7:
for him

### Reply 8:
Fake image of their business? Checked!Fake reviews? Checked!Common, the image is <truncated> Same description for miners that matches cryptoasicethminer, cryptominnerbross, cryptoasicsminers, interesting pattern at least.So, the trifecta of stay away from it.

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9724,"Date: 2016-02
Topic: [GUIDE] Undervolt antminer s1 [1.19W/GH at the wall]
### Original post:
meanwhile, I did the opposite mod and am pushing near 220GH out of some of my ants ... =) hope they dont die! ... been a week or so ... still goin strong.

### Reply 1:
Holly!We need some explanation here!

### Reply 2:
thats very good - i did not expect them to be capable of much more than 205GH even with pencil mod. did you have to add a second fan or shrouding at all?

### Reply 3:
The same as I did but with the resistor R12 (the one at the left of R3).It will increase the voltage at the chip, so be carefull

### Reply 4:
Yeah, I just vmodded one of my '14 units to around 1.15-1.16v per 'module'Its doing 431mhz @ .55% HW @ 219.5GH for the last 4hrs ... =)(previously the same unit has been at 425mhz @ .18% HW @ 216GH for a few days...)I may try it on my other 2 '14 units tonight.My '13 units dont vmod as well =/NOTE: no, didnt modify cooling and this particular ant is running at an avg of 44C

### Reply 5:
awsome mod.I applied it and set the clock at 325. 165 Gh pulling 277watts at the wallnormally 190gh pulls 380watts

### Reply 6:
We need only the pencil?

### Reply 7:
Good to know. This mod makes the S1s theoretically cheaper per Ghash than the S2 without sacrificing much power consumption.

### Reply 8:
According to Jim above's volt mod experience S2 are still much better for power consumption for not much more BTC which i foresee batch 3 to be priced around $3000.1000gh / 165 = 6.061 x 277 wall watts = 1678 watts6.061 x S1's = 5.41 BTCNow add the cost of all the power supplies needed for 6 x S1's and the S2 batch 3 will clearly be the smarter option by far.

### Reply 9:
only keep in mind that for the next 2-3 month window, having 1.2TH/2.4kW is better than 1TH/1kW.

### Reply 10:
Many thanks for a guide.I see that yous are modifying S1 left and right I have one spare blade with half of the chips not working and was wondering if there is any way I can use this half broken board ?It's the board which didn't have controller board attached to it. Is there any way to connect that board to RPi or even to existing and working S1 ?Thank you very much

### Reply 11:
there may be a way to connect it to an upcoming S2 unit if they simply modified the voltage/clocks on the current blade design.

### Reply 12:
Many thanks for response Klondike I'm incapable to try anything like this on my own so thought it might be useful to ask on here. So many gurus on here Well I will keep board just in case

### Reply 13:
Yeah, i cant think of anyway that you could connect it to an S1. AFAIK neither:a) cgminer settings are capable of detecting more than 2 boardsb) 2 cards cannot share a dataline for double hashrate. you would either see a lot of duplicate throwaways or HW errors. I do not think it is a 'shared comms' type of connection where multiple boards in parallel would be capable of sharing instructions or hashing 'n-times' faster

### Reply 14:
I was looking at possibility to solder USB on it or something else and then run it through RPi.

### Reply 15:
Has nobody overclocked or overvolted an S2 yet?640 chips (an S1 has 64 chips), 16 chips per TPS53355 regulator (S1 has 8 per)S1 was forcing around 30A through the regulator at stock speeds, and up to 40A with overclocking and some overvolting (based on some of the 210GH+ reports in this thread)S2 is putting about 22-24A on the regulator at stock. Presumably with a bit of voltage modding and overclocking the regulators could handle up to about 1.4TH/2kWonly issues:1) power. To seriously overclock, adding a 600W+ PSU will be necessary2) cooling. More fans and/or individual chip heatsinks are necessary to properly exhaust any extra heat since the units read 50C+ temperatures stock2b) PCI entenders. Looks like the boards are all mounted using PCI (PCIe 16x?) slots. if you used some risers (with a nice pair of 14AWG power cables to protect the risers) you could get the boards up out of the case and arrange them with airflow directly aimed at the heatsinks for better cooling.I can't wait for my batch 2 unit to arrive - if noone overclocks by then I might have to be the first. (donations will be accepted in case i kill my miner :p)

### Reply 16:
I have undervolted my Antminer to 1,0V (R3 = 3.9kOhm) and I am really happy with results. Before mod my antminer was consuming 348W on the wall on 180GH/s but now it takes only 260W on 165GH/s.So 8,3% performance decrease means 25.3% power input decrease. Nice I am running about hour now and no HW errors at all. I also tried 180GH/s with lowered voltage, but a lot of HW errors resulted in 170GH/s output performance too.Mod was really easy. 10 minutes of work and everything worked on the first try.Thanks for the guide.

### Reply 17:
What are the risks of undervolting?I don't know the physics of it, so please excuse my ignorance 1. If I undervolt but do not underclock, what will happen? Will HW errors simply increase, or do I risk the antminer<rest of thread truncated>
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18357,"Date: 2013-12
Topic:  How to solve ""Pool 0 not providing work fast enough"" when Solo mining ?
### Original post:
In CGMiner you can increase your ST (Staged Work) by increasing your queue by going to settings and then queue and increase it from the default of 1 to 90 or so. That will help. Also setup some backup pools so that when Bitcoin-QT doesn't supply work fast enough you miner can leak some shares to standard pools. That way it's not a complete loss.Also the only share you will see submitted to the solo will be block solves. So not seeing any accepted shares is normal operation for solo mining.Sam

### Reply 1:
Hi Sam,I increase cgminer queue to the maximum 90, then the message is gone. Is it necessary to tuning its work queue as minimum or I can use queue with 90 without the effect? Do you have any command recommend to add more in bitcoin.conf to increase luck or performance? I plan to do Solo mine just only one month, it looks like lottory (@-@).cgminer version 3.6.6 - Started: [2013-11-12 <truncated> (avg):140.5Gh/s | A:0 R:0 HW:691 WU:1981.1/mST: 92 SS: 0 NB: 5 LW: 0 GF: 3603 RF: 0Connected to 192.168.1.99 diff 511M without LP as user userBlock: 00063def6bf32304... Diff:511M Started: [20:55:22] Best share: <truncated> management ettings [D]isplay options [Q]uitKnC 0: | 212.0G/141.0Gh/s | A:0 R:0 HW:692 <truncated> 20:54:13] New block detected on network[2013-11-12 20:54:13] KnC running <truncated> 20:54:13] KnC: accepted by FPGA 3 works, but only 0 <truncated> 20:55:22] New block detected on network[2013-11-12 20:55:22] KnC running <truncated> 20:55:22] KnC: accepted by FPGA 4 works, but only 0 submittedThank you very muchPaulK

### Reply 2:
I don't use the .conf file myself. I use ""-Q 10"" command line switch then manually increase it when I start the miner. The .conf file may allow larger values then the command line.As for tuning, I don't know how much difference other values will make. I use a queue of 60 to 120 as seems to vary how busy it keeps my BE's. You have allot more hashrate than I do with my meager 20GHs or so.Just make sure your client has as many connections as possible.Good Luck,Sam

### Reply 3:
Hi Sam,I got the message again in next 10 minutes but the message occurred quite slower than using its default queue. That it means my bitcoin-qt reaches its capacities in the current environment, I have to set up backup pool follow your recommended.I don't know the other persons face this problem like me that using bitcoin client on Windows7 Virtual machine. Is it not generate the issue incase not using Virtual machine or using other OS? Anyone can confirm that solo mining is working normally on Windows7 when having hashing load at 140GH/s up?Note: Currently, I only have Macbook Pro with small hard disk so it needs to use VMware in case.ThanksPaulK

### Reply 4:
What many people do who solo mine with high hash rates it so setup their own pool software. That's more complex than I want to get. So I just mine with the occasional ""Pool 0 not providing work fast enough"" message and not worry too much about it. And setup failover pools to take up the slack. I'm happy with that. Of course I would be happier with finding a block, but hey, can't have everything I guess .Sam

### Reply 5:
What's the difference between server=1 and daemon=1 if you are running the QT version?

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21858,"Date: 2017-11
Topic: Antminer S3 missing Chain
### Original post:
I had 2 chains showing before, but one of them had only xxxx for the ASIC status. I went ahead and rebooted the machine to see if it would resolve any issues. Initially, I had overclocked to 250M. I think that may have had an adverse affect. My PSU is 850W, so it should be plenty. Anything I can do to get that other chain back? Right now, I'm mining at HALF the rate I should be.Any thoughts or help?Thanks

### Reply 1:
Resetting your machine, might will be your solution, since the antminer s3 have a resetting button. but am not sure if that button can bring back your clock setting to default. good luck

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20276,"Date: 2015-03
Topic: cggminer not running properly with asic block erupters?
### Original post:
OK so I have a usb block erupter and downloaded cg miner v3.2.1 extracted it created a bat file and named it Startmining.bat so it would save as a .bat. I input cgminer.exe -o <truncated> -u UserID_worker -p **** --disable-gpu -S all This does not work do you have any help on this?EDIT: I have MultiMiner but that is bringing up 10mh/s average even though it says 336mh/s when bought could you explain this?

### Reply 1:
Download the latest cgminer, your cgminer is very old.You need to use powered usb hub(a good one) since it's draw more power. Of course even if you can draw 336MH, you won't get any share with today difficulty.

### Reply 2:
Version 3.2.1 is actually new enough to run the block erupter. The problem zich has is that he probably has not installed the drivers for his miner to work:<link> this, your computer cannot 'talk' to your miner properly.

### Reply 3:
There's not much point advising him how to use an old version which uses different drivers to the current version and is riddled with bugs long since fixed in the newer versions.

### Reply 4:
I wasn't advising him to use the old version. I was saying that his old version is likely not the problem--it is his lack of drivers which is the problem.I am certain that all versions of cgminer require the silabs driver for the erupter to function--I was using a new version of bfgminer with my block erupter back in the day and I required the driver before it would work.In short, him upgrading cgminer will not address the root cause of his issue. It may be more stable/have less bugs (and be a good idea), but he still requires the same driver.

### Reply 5:
AFAIK bfgminer uses a different driver. Need to use zadig for cgminer to change to WinUSB.

### Reply 6:
Give the new drivers ago as others have suggested, if that does not work let us now. It is a good idea however to update your cgminer.

### Reply 7:
This could be related to power problem. Powered usb hub is prefered.

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13361,"Date: 2015-02
Topic: proxy or ability to less my connected workers?
### Original post:
If a person ran 50 s3 antminers, for example.is there a way to run a local proxy or something, to tie them together so only one connection goes out?Or is a worker for every unit going to the net, the better option?Thanks for input. Not sure what to search for this one.

### Reply 1:
Ckpool in proxy mode: <link>

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21963,"Date: 2017-12
Topic: Antminer S9 running 2/3
### Original post:
Hi,This is a brand new Antiminer S9 (my first attempt at mining). Can someone help me figure out why it is only running 2/3?<link>

### Reply 1:
Chain 6 is missing chips, see how it has less o's than the others? Each o is a chip that is reporting OK, they are all linked in a chain. For some reason, a chip is bad in your chain 6 and preventing the others below it from working.You could try powering down and switching around the ribbon cables, but this seems like a hardware defect that you need to report to bitmain. Sorry.

### Reply 2:
Thank you. I have already contacted Bitmain (no reply). I was hoping there was something I was overlooking.

### Reply 3:
I say limp along at 11GH and get a few hundred bucks while you wait for bitmain. Send them the screenshot and kernel log, and ask if you can open the front fan and cover and send them back only the bad board. This will break the front warranty sticker, so you must get their permission. But at least you could keep mining at 9-ish GH while you wait for the board to be returned and replaced. The ant won't care if it comes up with only two boards, it will still mine them. But of course, power down before disconnecting anything or opening 'er up.Slushpool - nice!

### Reply 4:
I was hoping that could be worked out. The FAQ says the whole S9 needs to be returned, but it doesn't make sense to do so (to me).Running on the 2 boards, I'm getting 9.2GHI'm jumping in with both feet. I have another S9 coming Dec 27-Jan2, Three L3+ this week, and I'm waiting on half the parts to build three ( 8 ) GTX 1070 rigs.Thanks again for the advice.

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18546,"Date: 2014-01
Topic: AntMiner S1 doesn't work
### Original post:
Welcome. I have a problem :/ just returned home and is wheeled and not a copy, the green LED is blinking all the time, I can not connect to the crawler in any way, I did a reset and still nothing. The LEDs at the RJ45 socket in an excavator working normally. What could be causing this condition?

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10847,"Date: 2019-10
Topic: Current List of Competitive Hardware - October 2019
### Original post:
Updated Pricing based earliest available batch ,then least expensive. Changed Canaan 1041 to 1047 as that seems to be their current offering. Included review/review posts for Innosilicon T3, and 1047. Added Speculation links for Avalon 1066, Bitmain 17+ series miners and Innosilicon T3+. Let me know if something isn't correct or you have a concern.

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    ""hardware_name"": ""Innosilicon T3+"",
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5425,"Date: 2013-06
Topic: single BFL chip USB Miner idea
### Original post:
Doesn't a single BFL chip still draw more power than two USB ports combined (bus powered)? I think a Jalapeno with 2 chips draws like 30w and 2 USB ports is only 5w of power.

### Reply 1:
Each BFL chip draws about 14watts in the Jalapeno, as several people have measured.So you would need 6 USB ports to run one chip.

### Reply 2:
OK, so it's a dumb idea... nevermind.what about other interfaces, do any deliver required power for a single chip? POE? firewire maybe? I hate external power supplies...

### Reply 3:
dumb idea from a dumb weak as person

### Reply 4:
Not at all a dumb idea. The jalapeos are still using first gen chips, 2 of them and a PCB build for originally up to 8 chips.According to the power spec for the new chips is a power consumption of 3.2 w per GH. This may not be 'USB only' territory but I think a small 1-chip design could still be an interesting proposition for 4 gh/s single chip miners.

### Reply 5:
You sure seem like quite the douchebag.

### Reply 6:
only to people that pissed me off talking shit

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9672,"Date: 2016-01
Topic: [Review/My Experience]With Bitmain's Second Hand (Used) Antminer S5 Batch 7
### Original post:
Is that a bad thing? You can work that out by asking the following questions:1) When was the last time you heard of an S5 damaged in transit?2) When was the last time you heard of a Tube / Prisma damaged in transit? [A miner that used copious packaging].3) Do you like paying to ship unneeded packaging materials around the world?4) Do you want all the baby penguins to die?

### Reply 1:
Yeah I think the s5 is normally shipped only with 2 white foam pieces.. well also with the bubble wrap bag but with these second hand units i can see why they dont include the bubble wrap.. probably just packaging them up on the fly really quick

### Reply 2:
That's up to the next buyer to decide. For me, personally the different units i have came in smaller/tigher boxes with the unit in an anti-static bag. Overall there's less packaging material. The sides are have a small layer of foam which serve arguable purpose beside balancing the pressure if the unit get thrown or dropped. Doesn't sound particularly overkill to me and it is better packaging and less material weight, while the extremities get the same absorption rate.Is that a bad thing? Probably not. Was the packaging i received very barebone? Yes. Would i have preferred a tighter and better packaging? Yes.Mhm. That is how it went. I do hope we get those coupons toward some other product down the road. It would make me fully satisfied, since ultimately i did pay full price for a slightly used unit, but used nontheless.

### Reply 3:
I really care about baby penguins and polar bears.Bitmain is a good company.About the used miners, every miner by every manufacturer are in use till they are delivered to the last user.30 day warranty is actually working and I feel comfortable to buy products from Bitmain.

### Reply 4:
Its not too bad its been running pretty well now. I did some longer tests pushing real OC on the machine till the machine no longer operate properly;

### Reply 5:
Of the 5 I've gotten, that's how 4 of them showed up. One had peanuts and some antistatic foam and was in a plastic bag, but that one I bought via Amazon used not from Bitmain.The ""30 days starts when the units are shipped"" part is actually illegal under US law - US code specifies that warrenttees start when the buyer recieves the item (I've BEEN to court once over that and WON, it's in the US Code somewhere) but for practical purposes it's not a significant issue given that Bitmain seems to get stuff out promptly once they claim it's shipped - 2 to 3 day difference that most folks would never notice.Just be sure if you DO have a warenttee claim that you get it filed promptly - once the claim is FILED there in no specific time limit on resolution.I suspect the coupons aren't going to be particularly large amount. I'd bet on $50 or less - which is still better than nothing when they FINALLY start selling S7s.

### Reply 6:
I won't spit on 50~$ and worse case scenario i can probably sell them to an user if i can't afford the next gen unit. Regardless. I look forward to it.I'm thinking of opening a ticket with Bitmain about the instability of board one. Overall its not a big hash loss but if its precursor to more severe issue, then that would really bother me ^_^"".If its a stable issue that wont degrade, i don't mind too much. Its a big hash rate loss when it happen, but in the last 3 days it only happened once. It would definitively be a loss to ship it back or something no matter what.Other than that, since my later tests that i didn't report, 393.75 is the best Freq. You can get 5 more GH~ at 400 but you start getting over <0.0001% errors and ultimately you get like 5 gh for 9watt~ of power.

### Reply 7:
So two days ago, the Used Antminer S5 Batch 7 from Bitmain finally arrived. Me and several user were previously discussing the condition and value of buying used hardware for the full price. So this is for the few who asked question such as ""Second Hand S5, Is it worth?"" This will be a pseudo review on specifically the Used batch 7 Antminer S5 bought directly from Bitmain;So the packaged arrived in the usual box it always does. I quickly opened it and found some very minimal packaging. No need to include a picture, it was simply 2 white foam square holding the extremities, with no other kind of padding or packaging whatsoever.The unit was fairly dusty and there was clumps of dust in the heatsink. Hmm well, a bit of pressured air and as new. Or not quite, but i guess its not that bad.2 Minutes later i finished placing it, plugging it and logging into the interface and replacing the Bitmain's worker info with Kanopool. Then flashed to Bitmain's latest firmware.My first impression was Great, the open wrt Luci is very responsive (My S1 are hella slow).I then first tested a few things, the 2 most important point i must bring;-Fan control works, you set a %, no value seem to default to 8<<rest of thread truncated>
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2379,"Date: 2013-12
Topic: GROUP BUY [KNC Neptune-DayONE] [.55 Per share 32/32 Shares Available]
### Original post:
Reserved.

### Reply 1:
hi, im up to about .7 btc if i get 1 share, can i keep buying shares every time i get .55 more btc? also do you know the expected delivery date?thanks

### Reply 2:
If you'd like, I can reserve your additional shares up to a week if you do not have the full payment yet. Let me how many you'd like to reserve.

### Reply 3:
KNC Miner says the delivery date is Early 2014. They don't have a firm date yet.

### Reply 4:
Is this the unit from the presales only to previous buyers or is this unit from the ones on sale now with the first batch to the general public??

### Reply 5:
Can you please make a reservation of one for me?

### Reply 6:
Hello Tragter,How many shares did you want reserved?

### Reply 7:
A fair comment that I too am interested in.

### Reply 8:
Hi,The unit is a Day one presales unit. It's scheduled to arrive about a month earlier than the units on sale now. So it's pre-first batch.

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5386,"Date: 2013-06
Topic: Asic USB Miner MH/s poll
### Original post:
reserved

### Reply 1:
333 to 336 however these DO need active cooling to keep hardware errors down.

### Reply 2:
Greetings.I'm getting for my 2 USB Gizmos, 336.4 to 336.8 MHash/s, also with active cooling, 1% Hardware Errors. The ASIC chip needs a heatsink and the best I saw (and going to buy from Taiwan in a few days) is the smaller of a 3 heatsink kit to the Raspberry Pi, intended for the voltage regulator of the RPI: <link> If anyone knows a better one, please post here.

### Reply 3:
I believe the heatsink that's on it is glued to it so be careful you don't wreck the chip removing the old one

### Reply 4:
If you are talking about the USB block eruptor, the heatsink is on the backside and it falls off when unscrewed.The thermal pad is not sticky.

### Reply 5:
With a fan on mine, they are averaging ~354MH/s each. It does fluctuate quite a bit, but that is the average.

### Reply 6:
How are you getting 354? Any modifications?Also is it better to take of that heatsink? I Have two of them and for now they are with heatsink on with 120mm fan blowing on them, all i can say that they dont get so hot like without fan, exact temps cant tell, but without fan it was 66 C, now its a lot cooler, but i still get ~ 1.9% HW.

### Reply 7:
I dont think active cooling is neccessary. I got three Erupters and I found out that a passive chipset-cooler attached to the initial cooler along with this thermal-pad does a great job. Got a picture from my setup here:Soon each Erupter will get bis own chipset cooler.

### Reply 8:
The idea is to keep the original gracious heatsink with the BTC logo at the bottom side and glue the aluminium heatsink directly on the ASIC ""BE100"" chip with the included 3M Self Adhesive Thermal Layer, at the upper side.

### Reply 9:
My BTCGuild estimated speed is 1,760.94 MH/s for 5 units, which works out to ~352MH/s each. I've also got a fan on mine.

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11187,"Date: 2022-07
Topic: Looking for S19 Test Fixtures
### Original post:
I previously owned a test jig for the S9 and it worked for the Antminer S9 and some 17 series hash boards. But recently it has rested. I want to buy a new jig and I want to be able to use it on the S19. No suitable ones have been found so far. I was wondering what do you use to test 19 series hash board?

### Reply 1:
I already give you a link from your previous threads you should also notice the test fixture from ZeusBTC but if you don't know yet then check this Antminer universal chip fixture test fixture.This support almost all Antminer units to test hashboard. And if you still asking for something related to repairing all you need is already on ZeusBTC so learn how to use the search button from their website.

### Reply 2:
Yes buy the fixture from Zeus just dont buy the touchscreen model, its a hot mess. You can also fix Your test fixture with one of Zeuss generic S11/15/17 Zynq boards.

### Reply 3:
Thanks for the reply. I did notice this test fixture from ZEUS before, but I only saw its introduction picture was no marked S19, so it was ignored at the time.Entering from this link, I see that S19 is mentioned in the introduction. Thanks for the reminder.

### Reply 4:
Does touch screen model mean ""2022 new version Antminer test fixture with touch screen""? Why is it mess? I'm thinking of buying the generic or this new version, can you speak more clear? I want to know. thanks.

### Reply 5:
My first one broke on the first day and the screen never scrolls to the last few lines, you constantly have to be touching it to see the final output. I fixed mine with a generic S17 board from them. The convenience of portability is negated by the quirks. Its just a mess but it is completely functional. The one pro I will add about this machine is it has a dedicated board inside that takes ATX power and runs pt2 test fans.

### Reply 6:
Thanks for your reply. This helped me, I think I'll buy a generic test fixture to use first and keep watching this.

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5503,"Date: 2013-06
Topic: [WTB] Metabank or direct Bitfury from batch #1
### Original post:
I am wanting to buy a verified Batch #1 Bitfury with hosting or US delivery. If you have access to one, post here or PM. No fantasy prices.

### Reply 1:
In russia i can represent my own group buy project, with share market in future.10% of mining profit i am taking myself and it can be little more for buying some related <truncated> Batch #1 is ended, we are waiting next one. But now you can pay for share for KnC Miner Jupiter 350GH.No US deliveryp.s. Sorry for my english, all additional support information in russian.

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20308,"Date: 2015-03
Topic: One share mined
### Original post:
I have a question about one (1.0) share mined with clevermining.com bitcoin pool. Several million hashes were calculated at difficulty 1,024. How much is that worth in terms of the bitcoin pool? And when does payout occur? Is it weekly or minimum threshold. Also, they are giving me an error indication user not found and I was mining to my own bitcoin wallet address. Anyone else use this mining pool? I need some advice.

",[]
14669,"Date: 2013-04
Topic: I just realized why I need to start mining, so a question for miners
### Original post:
The system is secure as long as honest nodes collectively control more CPU power than any cooperating group of attacker nodes.The importance of the above quote struck me last night. So I want to throw in my .02 btc of being an honest node and add some hashing power. I'm not worried about spending a few more dollars on electricity than I make in bitcoins because Bitcoin has already treated me so well.I mined on my laptop back in the day but stopped when it went to GPUs. Now, looking at mining has the same effect on me as the first time I encountered Bitcoin itself. It's confusing for us non-miners. So perhaps an expert or two could help clear up the confusion.My question: What's the lowest impact, cheapest method of adding 1-2 gigahashes/s to the network? As said, this is just to be an honest node as I'm not worried about profit from mining.Thanks!

### Reply 1:
The ""being an honest node"" argument with just 1-2GH/s is moot, because with such a low hashrate you're probably going to mine on a pool anyways. In that case it's not you, but the pool-operator who has to be honest (and you don't really have any control about that).But to answer your question: the cheapest way in terms of initial investment is probably to grab some used ATI GPUs on ebay, although the energy-cost is quite high for the long term. Another way would be to grab some used FPGA boards, higher initial investment, lower energy-costs. Or just wait a few more months and hope for ASICs to be <truncated> that's about all methods around for everybody.

### Reply 2:
So it would serve my interests to do my research first into who's running the pool. And that's what I wanted to know. Thanks for the quick answers.

### Reply 3:
Good for you for realizing the importance of why Bitcoin is so important. Impartiality.So, now, with the right philosophic point of view, go get yourself some ASIC's.

### Reply 4:
Where can we get some? Butterfly labs seems to be DOA and Avalon is sold out.

### Reply 5:
Yeah this is what I'm waiting for. It's OK if I miss the gold rush but will definitely want something simple hashing in the background at low cost once the technology matures a bit. I'd bet plenty others are in the same boat.

### Reply 6:
I'd want a simple small device that I can plug into my computer's USB port and starting bitcoin mining at 10 GH/s or 20 GH/s. When there are about a few hundred of us little folks doing that, we'd help secure the network. Fees can also be lowered.

### Reply 7:
Use P2Pool, and then you're an honest to god honest node.Or really, if your motivation is primarily to secure Bitcoin feel free to solo mine. Your expected return is as good or better, and if you're not in it for the income the fact that its a bit of a lottery shouldn't turn you off.

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8077,"Date: 2014-07
Topic: Black Arrow announces 28nm 64Ghash Bitcoin ASIC @ $1.99/Ghash
### Original post:
The X-3 is advertised as being geared toward datacenters. Is there anything preventing me from buying one for home and just hooking it up to my PC?

### Reply 1:
We're designing X-3 to be rackable so we can easily fit it into the data centers but you can certainly use it in your own home.Thank you for the very good question and we're sorry to have created this confusion. We will correct our description soon.

### Reply 2:
Chips and systems out at end of Feb 2014 - that means tape out sometime in December 2013, which means you've only just, or have not yet started physical design. Without being well into the physical design stage how do you know what your power or performance numbers are going to be with any confidence?

### Reply 3:
We've started the design in June. The only difference between us and our competitors is that we do not give unrealistic time frames which we know we cannot meet. We are confident that we will deliver sooner but we do not make promises that we might not be able to fulfill.

### Reply 4:
I love the prices but 64gh/s (the only one I have bitcoins for) isn't going to make any ROI in feb 2014.

### Reply 5:
We do not think this is correct. We already replied to this here.

### Reply 6:
I do hope you're right.

### Reply 7:
I am interested,Any guarantee to be delivered during Feb-14?TMC

### Reply 8:
If you are guaranteeing prices then what's the point of preorders? Basically the people preordering now are giving you a free loan because come february everyone gets the same price anyways. The only benefit of preordering now is if the buyer thinks that you won't have to lower prices and the current price will end up being less then market prices for similar devices at the time of shipping.

### Reply 9:
Its not shocking their ""artist impression"" would use some 3rd party case.While I have no experience with them myself, if you look around you will see that Black Arrow is a real company with a sterling reputation for bringing to market FPGA based miners. I dont see any reason to assume this would be a scam.

### Reply 10:
hican you give more details about your fab ?type of asic etc?

### Reply 11:
After a whole year of this ASIC preordering phenomenon/fiasco somehow you've managed to miss the point, lol.Preordering gives these small companies the needed capital to develop ASIC devices. In return, the ""investor"" is rewarded with a place in line when the device finally ships.Right or wrong, it's pretty much the only game in town. If you are waiting for the time when things ship the same day that you place your order, you may be waiting a very long time... unless you're content with ASICMiner Blades and USB Erupters.

### Reply 12:
Another pre-order in stock product ?No thanks

### Reply 13:
Let's see.X-1:$239 / 64 GH/s = 3.73Not $1.99 per GH/s.X-3:$3999 / 1344 GH/s = 2.97 (1344 is from the specification; X-3 should have 21 ASICs 64 GH/s each)Still not $1.99.Chips:$169 / 64 GH/s = 2.64But there is a discount:$2.97 - 30% = 2.079 (2.0828 exactly, but quite close)$.64 - 30% = 1.85However counting the discount is not fair. One would say BFL Single SC 60 GH/s was $699 because of FPGA upgrade.Where Black Arrow took the $1.99/GH/s from?

### Reply 14:
After a whole year of this ASIC preordering phenomenon/fiasco somehow it's starting to feel like the companies will promise you anything and everything just to get your money. Even if it makes no sense. What's the point of them getting capital now if they guarantee to drop the prices to whatever the market price will be in the future and have to return most of that capital? I don't mind gambling but when the gamble is just some vague guarantee promise that isn't rooted in reality that's just one more hurdle to overcome besides the fact of sending non refundable to btc to some outfit in china and hoping for the best on a proposition that's many months away.

### Reply 15:
Customers who pre-order and pay now have 25% discount. Our promise is that we will ensure that customers who preorder now will always get a better deal than customers who order later.At the same time we promise that our prices will be below market price at the time we ship. This means that customers that preorder now will have considerable lower market prices by the time that we ship which puts them in advantage towards anybody else.Unless Bitcoin mining stops because it becomes unprofitable for everybody else in February, our customers WILL make profit.

### Reply 16:
Orders of over 10000 pcs of Minion ASIC are $127.36/pcs$127.36 / 64 = $1.99

### Reply 17:
Everybody until now sold you hardware that they knew that you're going to loose money because 1 month later they announced something faster at a better price.We are guaranteeing that this won't happen with us: If we drop the price you'll get even faster hardware, keeping you in front of everybody else.

### Reply 18:
Do you have a<rest of thread truncated>
","[
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    ""hardware_name"": ""X-3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMiner Blades"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB Erupters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""X-1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Minion ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFL Single SC 60 GH/s"",
    ""hardware_is_owned"": false
  }
]"
13671,"Date: 2021-01
Topic: What is the best software to configure all T2T 30TH miners?
### Original post:
What is the best software to configure the mining pool addresses and renaming the rigs? Without needing to go into each individual rig website?And also any easy way to change all mining rig into eco mode?

### Reply 1:
Hi Antihackme,If you are looking for a free tool you can always use the Innosilicon official ""InnoMonitor"" tool. (download from Innosilicon website).But If you are looking for a commercial solution with better tools and support please take a look at mineitor.com.We provide many tools including batch management which supports pool configuration.You can find out about features of Mineitor at the following address<link> here in following topic<link> keep in mind you can test Mineitor free for one month

### Reply 2:
Hi bro,Thanks so much for your prompt reply.... what do you think about the btc.com's batch tool... i am familar with using that tool while i was using antminer s9 last time.... but not sure if it works with t2t mining rigs.... do you know?

### Reply 3:
btc.com tool is only supporting management with cgminer API and supporting Avalon and Antminer only which uses the web in some devices. so I don't think it supports <truncated> has its API for management purposes.you can read about the supported devices list for the btc.com tool at the following link<link>

### Reply 4:
tried going to mineitor.comto look at pricing but don't have any pricing for that...

### Reply 5:
Here it is<link> if you scroll down in homepage you can find the price.

","[
  {
    ""hardware_name"": ""T2T 30TH miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""antminer s9"",
    ""hardware_is_owned"": true
  }
]"
7843,"Date: 2014-06
Topic: USB BLOCK ERUPTER (repair and tricks)
### Original post:
Well I hate to hear you killed them , but I am glad to see a photo with all the parts off, kind of what I thought was going on under the chips and since I have been lucky and not tore mine up yet I have not had a need to remove the parts yet. Yes I wish you could but the BE100s, I am sure you can most likely more than the whole stick would be my luck.

### Reply 1:
i think i found someone how sell me his demaged erupters, with luck the asics are working. well see when i have it in hands..

### Reply 2:
Hats off to you and many congrats on taking this project to the max and reviving your BE's. I have to ask what Solder iron do you have? That must of been a tedious task to solder the chip properly to the board. WOW! I have experience with soldering but not with such small components. Anyways...good post, link and pictures. Will be downloading the referenced serial programming software. Cheers.

### Reply 3:
He's almost certainly using a hot air rework station. An iron could never do it. IR rework station is a possibility too, but most folks don't have one just laying around.

### Reply 4:
Thank you for the info regarding the USB serial numbers and how to reprogram, I was able to get 5 USB miners running today on an old XP machine.

### Reply 5:
Wow. Wish I had known about that a month ago!

### Reply 6:
Thank you for this keyword. Learned something else new today! Not a bad tool to add to the lab one day. Your right, an iron would never do it. You'd butcher it. Ditto! It was almost too easy! Surprised this issue was not brought up sooner or at least im surprised the discussion is not widespread!

### Reply 7:
I know the feeling. I lost a weekend of time and mining time because of this. What did you end up doing?

### Reply 8:
Just so you know, USB works on 5v, not 12v. If your USB hub's power brick is rated for 12 volts, it is because your USB hub has internal power circuitry that brings the 12v down to 5v. If you connect a 12v power source to a hub that does not have this circuitry, you will fry everything, including the USB port on your motherboard since the power 12v power will backlash into the 5v and ruin everything. Byebye hard drive and integrated circuits.

### Reply 9:
True story....

### Reply 10:
exactly!it was my mistake.. for some reasons in hurry i plugged it in and looked how it smoke up!same could happend if you have connected to mutch on one hub.when the supply is overloaded it is possible when it burns that too mutch current flows to the devices and kill all of them.i was lucky, i got demaged usb erupters from other members of this forum and was able to make from all demaged, some working once.

### Reply 11:
yes, i have a jovy proffessional hotair station in my work, but i use a cheap 80 aoia hotairstation from ebay since 7 years... this cheap hotair works since 7 years pefectly till today...i have 2 other cheap hotairs from china, this two didnt work good since day 1.but the first one is doing its job realy good.i like it more then the expensive jovy system.sometimes i use irda station too, but i dont like it... i have a better feeling with the hotair station.i solder with it mostly micro usb connectors of phones, bga's, other connectors, smd parts...i also repaired many ati hd5970 grafikcards with it.mostly the volterra vrm's getting demaged over time caused by overclocking and heat.but for that you need a preheater too, you cant desolder vrm's without a preheater.if you work with elektronics, especialy with smd parts, buy a cheap (not the cheapest) hotairstation.you get it from 50 to some tausends euros... look for aoya hotairstations, arround 80, they seems to be realy good for the money.its realy worth and makes the work mutch more easy.but you need to get a feeling for it (air, temp, time), you need to get some skills to handle it correctlywithout demaging your targets, better le<rest of post truncated>

### Reply 12:
if you connect your usb miner with 2 different usb ports and asap when you connect the 2nd miner into your usb portand you see in device manager that yellow ""!"" and you dont get 2 usb miners and no comport, then its because allusb miners have same serial, causing a conflict.if you whant to solve this problem, then you need to write your own serial into the silabs EEPROM chip.with this tool: <link> beginning standart config of the usb miner looks like this:so now goto ""Serial Number"" and write your own serial into it:and press ""Programm Device"".it will write your own new serial into the eeprom and now you can connect 2 usb block erupters without any problem.if you have more, you need to repeat this step with every device, but you need to use different serials!NEVER PRESS ""Custom Data Lock"" to LOCKED, cause this will permanent LOCK this data and you can never change it back!i killed 4 block erupters by connecting a jalapeon power supply to my usb hup.it had 13 volt and 6 ampere.. i had connected <rest of thread truncated>
","[
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    ""hardware_name"": ""USB Block Erupter"",
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  },
  {
    ""hardware_name"": ""Solder iron"",
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  },
  {
    ""hardware_name"": ""Hot air rework station"",
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  },
  {
    ""hardware_name"": ""USB miners"",
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  },
  {
    ""hardware_name"": ""USB hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Hard drive"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Integrated circuits"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jovy professional hot air station"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AOYUE hot air station"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cheap hot air stations from China"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""IRDA station"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI HD5970 graphics cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Preheater"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jalapeno power supply"",
    ""hardware_is_owned"": true
  }
]"
2482,"Date: 2013-12
Topic: [GROUP BUY WORLDWIDE] #1 Bitmain Antminer U1 USB Erupter [FULL]
### Original post:
Thanks cxboyminer for all of the hard work!please update the spreadsheet and OP to let all buyers know about new USBs <truncated> its already done

### Reply 1:
cxboyminer, Will I or (some of us) be able to pay shipping with BTC?

### Reply 2:
Yes but with new price i still pay the same..i would easily buy 1 more in order to win one free

### Reply 3:
I'll ask again: cxboyminer, Will I or (some of us) be able to pay shipping with BTC?

### Reply 4:
Since price was lowered 27% everyone of us should have the same price cut or at least small ones like 15% cut and biggers the rest...

### Reply 5:
I would do exactly the same, from 11 to 12 (so 14 to 16) if available.

### Reply 6:
Great then if 7 are available then I'll order 7, 3 more then my original order. 1 = 0.066BTC7= 0.462BTCshipping 0.008BTCtotal = 0.47BTCWill this do? If so I'll send BTC now.

### Reply 7:
can I increase order for a another 2 & get 1 more usb?(additional 0.2BTC, total 0.6, 8 USB)?{will pay the additional 0.2 in BTC}edit:if yes - then make it so - I'll read the reply in the evening.

### Reply 8:
I ordered 4 U1 plus one free = 0.4BTC free shipping? Or 5 @ 0.066= 0.33BTC plus shipping? Lets get the math right.

### Reply 9:
Hi,there is no free shipping.You pay for 4 units only.I don't accept shipping fee at the moment, until bitmain tells me the weigh per usb.Will pm soon.

### Reply 10:
Fine! I pre-ordered 4 + one free, if anybody wants them have at it, I'm through with this GP!cxboyminer, Please remove my name from this GB, Thanks

### Reply 11:
Payment Sent in full: 5.67BTC<link> send PM with shipping info (I realize that above payment does not yet including shipping cost)

### Reply 12:
because you did not anticipate shipping fees? c'mon really? anyways, the price even with shippng is quite good, far better than the bitfury USBs that run at 2x the speed and cost almost 4x as much

### Reply 13:
You want to buy 5 more? Buy them. I'm out.

### Reply 14:
Payment of 0.99 BTC for 11 units with 3 extras for free (total of 14 units) <truncated>

### Reply 15:
5 MORE USB LOOKING FOR OWNERS!!!Payment received.Ok. Up to you. Thanks for the support anyways.

### Reply 16:
I will buy one of those @ 0.1BTC if that qualifies me for an extra one for free (purchase of 12 now).

### Reply 17:
Thank You,

### Reply 18:
Well, now ya gotta give me the deal you just gave Tas, as I asked first <link>

### Reply 19:
Hi,you can get 1 more (12 in total) and get 1 more for free (4 for free in total).Because there's only 3 left (after tasweb 1 + 1 (free unit)).Thanks

### Reply 20:
done! Thanks

### Reply 21:
Many thanks, will send more BTC now.

### Reply 22:
NO MORE USB LEFT!!! I TOOK THE LAST ONE... MUAHAHAHA

### Reply 23:
Slight typo on your spreadsheet, my total cost is 1.09 and not 1.08 as you currently have it (0.99+0.1=1.09)Just trying to be honest![EDIT] Just saw your PM, my mistake, didn't realise I was at the 11-20 price range, thanks!

### Reply 24:
We should start a 24 hour payment countdown; so that people need to pay within the next 24hours otherwise their spot becomes available.That way we can get it rapped up fast and USBs on their way.

### Reply 25:
Ok, good deal... we're done Question: Do you have to wait before everyone pays before you order and receive from Bitmain, or will you receive and start shipping before everyone pays up (in case there are stragglers)?

### Reply 26:
I still have to exchange btc from paypal/bank transfer (bank's closed today 26/12).

### Reply 27:
OK24h payment countdown starts now!START:HK TIME- 15:30 26 DECUK TIME- 07:30 26 DECCENTRAL- 01:30 26 DECEASTERN- 02:30 26 DECMOUNTAIN- 00:30 26 DECPACIFIC- 23:26 25 DEC (merry <truncated> 22:30 25 DEC (merry christmas)HONOLULU- 21:30 25 DEC (merry christmas)

### Reply 28:
paid.txid: <truncated>

### Reply 29:
Well that's going to be awkward, it's the holiday season and I am at the other end of the country visiting family to my paper wallets. You will have to give me some grace here and I expect that there will be others in a similar position.

### Reply 30:
DEADLINE EXTENSION WILL BE AVAILABLE TO THOSE WHO CANNOT ACCESS TO THEIR WALLET FOR PAYMENTS DUE TO HOLIDAY (TRAVEL). PLEASE STATE THE EARLIEST TIME YOU CAN SEND THE PAYMENT. THANKS.Hi,when are you going to be able to send the payment?

### Reply 31:
After this GB ends will you start a second one?

### Reply 32:
Hopefully, if people wants me to start another i will consider. why?

### Reply 33:
I will be back Saturday morning so by I will be able to send by midday, are you okay with that?

### Reply 34:
I will be back Saturday morning so by I will be able to send by midday, are you okay with that?Yeah... but be quick because I'm leaving hk on the 5/1. So after that time if bitmain hasn't ship it then i will re-ship those in the UK.

### Reply 35:
Many thanks cxboyminer, wife now giving me less angry looks

### Repl<rest of thread truncated>
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  {
    ""hardware_name"": ""Bitmain Antminer U1 USB Erupter"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""bitfury USB"",
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]"
14411,"Date: 2011-07
Topic: AMD Catalyst 11.7 Preview + OpenCL 2.5.684.211
### Original post:
Hi guys! I just installed this and wanted to check out if there are any performance improvements. Maybe we can all test this one out. With my 5850 @ 960/300/1.174v | poclbm 6.27.2011 + aoclbf 1.74Catalyst 11.7 = 389-393 Mhash/sec. Catalyst 11.6 = 390 Mhash/sec.Some guys reported improvements on OCL performance here <link> (Post 41).It's a new AMD APP runtime as well as driver. Here is the download link also from the thread (thanks for users out there) <link>

### Reply 1:
What about phatk performance?

### Reply 2:
poclbm 27.06.2011 comes with phatk instead of the old poclbm kernel.

### Reply 3:
Any news on the unneccesary CPU usage while mining?

### Reply 4:
So basically SDK 2.5 is looking to be as fast as 2.1.

### Reply 5:
No fix yet, at least for me.

### Reply 6:
Does 11.7 preview still hangs up on a 6950 if you launch a video while mining?

### Reply 7:
yes and no i forgot to turn off my miner the other day and went to watch a movie and my pc dint lock up then i tried it 5 more times and it locked up every time so mabay we are moving in the right direction or it was just a fluke idk. but in the mean time turn of gpu gpu acceleration it fixes it

### Reply 8:
Does the 69xx mem downclock work properly yet? (I mean downclocking more than 100 MHz below core) Anyone that's tried it, I'd love to know - need to cool those 6990s!

### Reply 9:
11.7 Early + SDK 2.5 = ~755 MH/s compared to ~740 with 11.6 + SDK 2.4... (2x 6970s @ 880/170 [mem downclocked with MSI Afterburner after disabling EULA] ...also disabled ULPS)

### Reply 10:
Mine seem to downclock well using Sapphire Trixx.Going from 11.6 to 11.7 gave my 6990 a boost from ~360 to ~374. Nice.No change on 5870s.

### Reply 11:
So, looks like everyone's reporting a small bump on the 6 series cards, but nothing on the 5 series cards?

### Reply 12:
Under 11.5 I've thought I've downclocked mem before, but I noticed that temps were increasing instead of decreasing. When I used some cli tools I found that the mem clock reset to max if I set to more than about 100MHz less than core. Have you noticed a temperature reduction after downclocking mem? What did you downclock them to? This could be awesome - no more fans as loud as hairdryers for my SO to complain about!

### Reply 13:
I just killed my PC with a 6450 upgrading to 11.7. Went to safe mode and changed driver back to 11.6 and now can't even get into Windows. Safe mode hangs on storport.sys (how is this even related??) and Startup Repair from the OS drive hangs on a blank screen while Startup Repair from Windows 7 DVD hangs on Starting Windows with no logo.And, starting Windows 7 setup from DVD also hangs...hardware failure?

### Reply 14:
what happens if you remove the card then boot up?

### Reply 15:
Same. Actually, I just got it to boot. Weirdly in my bios the CPU was undervolted by 0.3v. But the PC has been working fine for 2+ years (6450 is a recent addition). I had pulled out the 6450 and the eSATA pci-e card because of the hang on storport.sys but still could not get past the Windows boot up logo. The integrated graphics was also ATI/AMD so it would loud the same driver - I thought I was screwed. As a last resort I decided to reset the bios (this MB has always been finicky) and noticed the 0.3v undervolt! I wonder if this was usable before (can't remember) and just now at this point in time stopped working or somehow the bios got corrupted (seems so unlikely?).I'm reinstalling 11.7 now to see if the CPU voltage setting was the culprit.Anddd...the PC froze during setup.Reinstalled 11.7 again without display driver and got BSOD..and here's the kicker, my CPU is once again undervolted 0.3v in bios. So now I have some software that can change my bios settings O.O

### Reply 16:
wtf? thats not posible, only with MB that has UEFI...

### Reply 17:
I don't have UEFI. I know it's possible to make real time changes to certain chipset flags but none that persist in the BIOS EEPROM. The undervolting may just be a quirk of the MB from all the hanging and BSODing...it's a weird MB. The system has otherwise been stable since I've put it together.I have tried installing 1. complete 11.7 package, 2. 11.7 without display driver, 3. 11.7 with just display driver, app sdk, and VISION engine. All 3 has same problem - I'm suspecting the VISION engine setup now so going to try it without that.Update: Confirmed the instability is from the VISION Engine. Maybe it doesn't have the correct clock profile for my 6450 and thus runs it at unstable settings. Don't have an explanation for the BIOS undervolting except that the MB is quirky.

### Reply 18:
Nope, several mobos support tools provided by the OEM to runtime tweak settings, but only the expensive <truncated> ones.

### Reply 19:
I'm not sure if my board has those kind of tools but I wouldn't be surprised if it supported it. But the board has always been quirky - soft reboot (using s<rest of thread truncated>
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    ""hardware_name"": ""6950"",
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  {
    ""hardware_name"": ""6990"",
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    ""hardware_name"": ""6970"",
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24125,"Date: 2023-05
Topic: Bitmain S9 - Low Hash Rate Of 5TH - BraiinsOS
### Original post:
Hey guys, one of my S9s is showing these error codes and is hashing the quarter of what it should. Logs are below. Any ideas?<link>

### Reply 1:
I'm not so familiar with BraiinsOS logs but would you mind to post both kernel and system logs?We can't determine the issue or else put it back to stock firmware so that we can troubleshoot the unit furthermore.Have you tried auto-tuning?

### Reply 2:
Sure thing. I played with the auto-tune, i used a fix overclock from a running s9 and i had no luck. It was risen to 10th upon switching to Unminable <truncated> Apr 28 21:59:05 2023 user.notice : Added device handler type: tunnelFri Apr 28 21:59:05 2023 user.notice : Added device handler type: Network deviceFri Apr 28 21:59:05 2023 user.notice : Added device handler type: bridgeFri Apr 28 21:59:05 2023 user.notice : Added device handler type: macvlanFri Apr 28 21:59:05 2023 user.notice : Added device handler type: 8021adFri Apr 28 21:59:05 2023 user.notice : Added device handler type: 8021qFri Apr 28 21:59:05 2023 user.warn kernel: [ 11.544725] Start post-upgrade process...Fri Apr 28 21:59:05 2023 daemon.warn netifd: You have delegated IPv6-prefixes but haven't assigned them to any interface. Did you forget to set option ip6assign on your lan-interfaces?Fri Apr 28 21:59:05 2023 kern.info kernel: [ 11.771140] device eth0 entered promiscuous modeFri Apr 28 21:59:05 2023 kern.info kernel: [ 11.790972] IPv6: <truncated> br-lan: link is not readyFri Apr 28 21:59:05 2023 daemon.notice netifd: Interface 'lan' is enabledFri Apr 28 21:59:05 2023 daemon.notice netifd: Interface 'lan6' is en<rest of post truncated>

### Reply 3:
Here are the logs and kernels from stock firmware: Monitor:Code:Mem: 34520K used, 461072K free, 0K shrd, 837656K buff, 837704K cachedCPU: 0.0% usr 4.7% sys 0.0% nic 95.2% idle 0.0% io 0.0% irq 0.0% sirqLoad average: 0.01 0.04 0.03 1/57 2392PID PPID USER STAT VSZ %VSZ CPU %CPU COMMAND2391 2390 root R 2836 0.5 1 4.7 top -b -n 11974 1 root S 64360 12.9 0 0.0 <truncated> 1 root S 34996 7.0 1 0.0 /usr/bin/bmminer --version-file <truncated> --api-listen --default-config <truncated> 1 root S 3084 0.6 0 0.0 /usr/bin/ntpd -p /var/run/ntp.pid -g1406 1 root S 2840 0.5 0 0.0 /sbin/getty 115200 ttyPS01407 1 root S 2840 0.5 0 0.0 /sbin/getty 38400 tty11408 1 root S 2836 0.5 1 0.0 {monitorcg} /bin/sh /sbin/monitorcg1450 1 root S 2836 0.5 0 0.0 udhcpc -b -t 10 -A 10 -x hostname antMiner -i eth02390 1370 root S 2836 0.5 0 0.0 /bin/sh <truncated> 2390 root S 2836 0.5 0 0.0 /bin/sh <truncated> 1 root S 2776 0.5 0 0.0 /usr/sbin/lig<link> -f /etc/lig<link> 1408 root S 2704 0.5 1 0.0 sleep 20m1362 1 avahi S 2612 0.5 0 0.0 avahi-daemon: running <truncated> 1362 avahi S 2612 0.5 1 0.0 avahi-daemon: chroot helper1351 1 root S 2092 0.4 0 0.0 /usr/sbin/dropbear -r <truncated> -p 221 0 root S 1688 0.3 0 0.0 i<rest of post truncated>

### Reply 4:
What you should try is to set a lower maximum power target. Fir example 1300 Watts maximum. The issue is that Brains OS + does often put to much watts from the beginning. If you get good results with 1300 watts you can try to set higher wattages.If that does not work post again the error codes.

### Reply 5:
Ok, i set the watts to 1300 here are the logs:<link>

### Reply 6:
Solved, I swtiched around the control boards with a working S9, and its fully functional. Thanks, guys especially BitMaxz. You have made my first few weeks here a pleasure

### Reply 7:
I resoldered the elbow joints on the original connectors, it immediately shot up to 16TH.Is it possible oxidisation of the metal causes the connectors to not transmit current correctly to power the miner?

### Reply 8:
Yes that is totally possible! You can measure if the voltage is correct/if the is a current. If everything works now then I would just leave it however. So this means that your broken control board is now working again fine?

### Reply 9:
No, it was a fault control board! Thanks for everyone's assistance.

","[
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  {
    ""hardware_name"": ""control boards"",
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  {
    ""hardware_name"": ""original connectors"",
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7597,"Date: 2014-05
Topic: Is Cointerra bankrupted? — People Asking for refunds.. NEWS UPDATE
### Original post:
cointerra send me a .png file showing a bank transaction.. i will verify this on monday or tuesday, cause i dont know how many days it takes to an international transfer...If the png is true.. then cointerra just has to ask people for more time..I dont think anyone would refuse...

### Reply 1:
this forum, only from rumours ,can put down/up prices of the coins..its the biggest community for btc , and you think companies dont watch that forum? lol

### Reply 2:
I do believe that Oxenbauls is on it...

### Reply 3:
I wait on a refund from Terramine Hosting ( Sister company for Hosting from Cointerra) .Has anybody knowlledge about them?I wait now since 120 days.W*F

### Reply 4:
If English isn't your strong suit, then you should be careful what you say, lest you make grievous errors.

",[]
19851,"Date: 2014-09
Topic: USB ASIC ERUPTER - Setup & Config. BCG Miner,  cgminer & Hubs ""Oh Pi""!
### Original post:
I've got the same/similar <truncated> when i plugged in 7 sticks i had 2 give problems. one was puking errors and the other refused to hash.i unplugged 1 stick and started a fan blowing across the 6 USB sticks. the 1 stick which was previously giving >10% hw errors started hashing normally.the 6 sticks even after not clearing errors are now averaging ~1% hw errs over 30 hours now. the actual rate should be much lower once i restart and clear the counters. i measured the sticks at 140 degrees F without the fan. with fan they're comfortable to the touch.

### Reply 1:
How much current does your power adapter deliver? The USB eruptors require 500mA each. The DUB-H7 can deliver 3A, which is 5 eruptors and 1 fan, or 6 eruptors.

### Reply 2:
So I have 2 USB ASIC Erupters on a DLink H7 connected to my pi (using latest wheezy hard-float build). Got cgminer 3.2.2 installed and it's mining. However, 1 is averaging at 60 MH/s and the other one is averaging 116 MH/s. I have no clue why it's going so slow.I using these current <truncated> when I go a plug the hub into my PC running Windows 7 and I run cgminer with same configs, I'm getting the desired average of 333 MH/s per stick.Since I'm getting my desired hashrate on my windows machine it's making me think that it's a software problem. I though of it maybe being a hardware problem concerning power, but people are posting this hub works fine with 7 usb erupter's connected to them. I only have 2 connected at the moment.I'm running out of ideas. Anyone have an idea of what it could be?

### Reply 3:
I thought you didn't need drivers for linux? I don't recall installing any or reading that I need to for my pi.

### Reply 4:
I had trouble with 3.2.2 on wheezy as well - 3.1.1 works fine using icarus paramshere's a step-by-step for the install:<link>

### Reply 5:
Make sure you are using a Verified Hub when using Pi.Verified <truncated>

### Reply 6:
Just installed it and it looks like it solved the problem. Thanks

### Reply 7:
OP updated.Thanks!

### Reply 8:
Higher difficulty threw more errors in my testing.Don't know why

### Reply 9:
Because you need to convert your shares to Diff1 to calculate HW errors correctly.

### Reply 10:
Thanks for the feedback.

### Reply 11:
Im using difficulty 128 , HW values seem high . Any feedback would be helpful , I will be moving my hardware to a PI today.

### Reply 12:
So the way I read that isHW/(A*Diff)which is 115/(200*128) = 0.0044921875 = .449%Seems pretty good to me.Sam

### Reply 13:
Windows 8CGminer 3.2.2cgminer.exe -O USER:PASS -o <truncated> --gpu-powertune 20 --gpu-fan 100 --gpu-engine 1111,1111,1000 --gpu-memclock 1005,1005,900With this .bat CGminer opens and Runs all three gpus 7950s, as well as recognizes my block erupter. I have the BE in a USB 3.0 slot and its mining consistently at 333mh/s~.Also, as you can see by my bat config I did not need to include and special settings for the Block Erupter. I just installed the two drivers, restarted my computer and CGminer 3.2.2 recognized the card.ReplyAs far as hardware errors, Im literally seeing like 20 per 1000 shares accepted. give or take. so not so bad.

### Reply 14:
I understand the math.Increasing difficulty in stratum increases hw error % across the board for me.It's slight, but it's there.

### Reply 15:
Didn't mean to imply you didn't understand, sorry.What is your ""slight"" increased rate? from what to what?Calculating Diff1 shares won't be exact so there will be slop in how many diff1 you would have submitted if you weren't using higher difficulty.Sam

### Reply 16:
can two hubs function with the Rasberry pi, since it has two usb ports.for instance 2 x 10port usb 2.0 hubs or is there a limit to how many usb block erupters one pi can handle?

### Reply 17:
You should be able to daisy chain one hub off of another too.

### Reply 18:
Hi Guys, i've some problems with my new Usb Erupter.I've never get an ACCEPT. I Always get FOUN BLOCK FOR POOL or REJECTEDAnd the Mining pools indicates that my hasrate is always 0.I run on Windows 7 with guiminer.My connection string is : cgminer-nogpu -u Sampey.1 -p XXXXX -o <link> --icarus-options 115200:1:1 --icarus-timing 3.0=100 -S COM5Please help me

### Reply 19:
""Network diff set to 1""

### Reply 20:
it's a pool of a new cryptocurrency.The USB isn't working with this kind of pool?

### Reply 21:
Well of course it won't work. ASIC stands for <truncated> Integrated Circuit -- it's hard wired to do only one thing: mine bitcoins. It can't do other cryptocurrencies (except namecoins which use the same result at Bitminter).

### Reply 22:
Hum.....only namecoins other than bitcoins?

### Reply 23:
The Block Erupters can only mine cryptocurrencies that use the SHA256 hashing algorithm.Addl details on cryptocurrencies here:<link>

### Reply 24:
ok i understand thanks

### Reply 25:
Is possibly a thing like this? Thanks in a<rest of thread truncated>
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  {
    ""hardware_name"": ""DUB-H7"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""DLink H7"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""pi"",
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    ""hardware_name"": ""Verified Hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gpus 7950s"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""USB 3.0 slot"",
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  },
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    ""hardware_name"": ""Rasberry pi"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""10port usb 2.0 hubs"",
    ""hardware_is_owned"": false
  }
]"
21917,"Date: 2017-12
Topic: ADVICE - Why have i got low speed on this NEW S9_13.5Th ???
### Original post:
Hi AllOne of my four from November batch of S9's is NOT playing game....For some reason the speed gradually drops, even though temps and frequency are OK ?? (AutoFreq FW)Anyone got any ideas as what's going on ? ALL the other S9's are fine, same room, same ambient temps etc ?Tried differing PSU's etc, but same outcome.PIC BELOW -<link>

### Reply 1:
Just testing another PSU, this one is again a Bitmain branded one and ALL seems OK...MmmmmmStarting to see a strange trend here or i have several 'aftermarket' PSU's that work fine on older model miners..?

### Reply 2:
No kidding?!?! Is that another Yunhui PSU problem? Can you post the label of the PSU that is causing problems, and clarify whether it's one unit or several of those power supplies that are bad?The one I have is called YUNHUIBTC miner power supplyModel: G1057-1800WInput: 176-264VAC 50/60Hz 15A MaxOutput: 12V, 150A MaxI have only tested it for a short while. It seemed OK but yours sounds like the voltage is drooping or collapsing under load. I'm interested because I'm moving into a data center 2h away and I don't want these supplies to crap out as soon as I get halfway home, lol.If you have a voltmeter, I would check the voltage at the power supply's screw terminals as the miner ramps up. Use this miner that limps along, not the other miners that just hammer the supply and stop mining.There is a blue adjustment pot in mine, but messing with it could be dangerous if you don't have a voltmeter to make sure you are not exceeding the s9 spec.

","[
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain branded PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""YUNHUIBTC miner power supply"",
    ""hardware_is_owned"": true
  }
]"
376,"Date: 2013-06
Topic: [OPEN] Canada Only [Group Buy #1 @54/50] ASICMiner Erupter USB 2.03 each
### Original post:
Hopefully I'm not too late, here's the details:name: melmoNo. Units: 10 Payment sent: 20.3 BTCPayment address: <truncated> Scarborough

### Reply 1:
Did you get my PM? I see 5 confirmations... hopefully that last one doesn't take too long

### Reply 2:
Hopefully I'm not too late:name: JakeTriNo. Units: 8Payment sent: 16.24 BTCPayment address: <truncated> ScarboroughI'll send you a PM with hash for my signature using <truncated> address.

","[
  {
    ""hardware_name"": ""ASICMiner Erupter USB"",
    ""hardware_is_owned"": true
  }
]"
19034,"Date: 2014-03
Topic:  HELP - configuration HEX16a2 (hex16c) - raspberry
### Original post:
You miss git checkout command.Code:1. sudo aptitude update2. sudo aptitude upgrade3. sudo aptitude install libudev-dev libusb-1.0-0-dev libfox-1.6-dev 4. sudo aptitude install autotools-dev autoconf automake 5. sudo aptitude install libtool libncurses-dev yasm 6. sudo aptitude install curl <truncated> libjansson-dev screen7. sudo aptitude install pkg-config uthash-dev make git-coreThen download cgminer 4.0.0Code:1. git clone <link> mv cgminer cgminer-4.0.03. cd cgminer-4.0.04. git checkout <truncated> wget <link> 6. patch -p1 < <truncated> ./autogen.sh --enable-hexminera --enable-hexminerc --enable-hexminerb --enable-hexmineru <truncated> makeStep 5 is patch uploaded to dropbox by myself, so you can use your own that downloaded from technobit download page if you want Make sure there is no error message on each step. No need to install, you can run cgminer from folder.Code:1. screen2. sudo ./cgminer --hexminerc-voltage 1100 --hexminerc-options 16:1500 <truncated> 0 <truncated> 255 --hexminer8-voltage 1005 --hexminer8-options 8:260 <truncated> add the setting to cgminer.conf so you don't have to type setting command each time Code:sudo nano <truncated> : [ { ""url"" : <truncated> ""use<rest of post truncated>

### Reply 1:
can you tell me what the ""checkout"" does and if it is necessary?I have also problems running my HEX16A (so hexminera) on cgminer 4.0.0. It worked with the previous patch and cgminer version...I will try to use your method tomorrow. But I am running a light version of raspberry because my SD cart with 8GB is dead. I am now using a SD card of 1 GB... (and git clone is too large for that)

","[
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    ""hardware_name"": ""HEX16A2 (hex16c)"",
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    ""hardware_name"": ""raspberry"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card 8GB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card 1GB"",
    ""hardware_is_owned"": true
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]"
7116,"Date: 2014-02
Topic: Introducing ATX-Pi
### Original post:
Are there any accommodations for mounting and cooling K16 boards in a standard ATX case?

### Reply 1:
Okay, I'm sold. Where do I buy one

### Reply 2:
Thanks for your interest! You can see more details about kit purchases at <link> tindie? It is like the etsy of hobby electronics, and is integrated with paypal to provide security for all parties. If you pledge to the campaign no funds will be withdrawn until the end of the campaign, and if I fail to ship you can easily claim refunds. As much as I want to accept BTC for payment right now it is not feasible. Using tindie will allow me to place component and board orders instantly upon funding, vastly reducing delivery wait time.

### Reply 3:
Forum member jdape has several designs for sale: <link> would love to work with him on getting something setup to mount a Pi and my ATX-Pi alongside K16s but have not made any inquiries in that direction yet.

### Reply 4:
Stickyback velcro doesn't work?

### Reply 5:
Lo-tech works too

### Reply 6:
For 7 of them?That seems oversimplified to me. I haven't even taken measurements, let alone considered airflow.

### Reply 7:
Bah! I can't read. I thought the talk was of mounting *just* the Pi. Sorry.

### Reply 8:
I can see this being incredibly useful in DIY mining by making using a standard PSU easy. Raspberry Pi's I think will come to dominate as a standard gateway for these mining systems to negate the need for external hosts, this little guy bridges the gap nicely to take any guesswork out of powering these rigs with off the shelf hardware.Nice work It is going on my needed parts list

### Reply 9:
Thank you for the kind words!

### Reply 10:
Heh, I see. Thanks for explaining.

### Reply 11:
Nice work - very useful!Say hi to pt & ladyada for me

### Reply 12:
I will LaserHorse, thanks!

### Reply 13:
nice solution; will keep in mind if any my projects need this.

### Reply 14:
Shameless bump

### Reply 15:
nice job on the show last night - I think once folks see the ATX-Pi mounted and working in a case with miners, it'll be clear how useful it is.

### Reply 16:
nice toy, ill want one soon!

### Reply 17:
Well thanks for saying that I thought I kinda flubbed it myself. It's all good, maybe I'll take it back on when I can show the miners in action. If anyone is interested I have two bare circuit boards for sale, PM me for details, shipping to the US only (so we all can afford the postage rates lol, nothing against International it would just cost $23.95 to send a simple board).

### Reply 18:
Am I missing something, or is this really just a power button for an ATX Power supply and a Raspberry Pi? How much does it cost, and can you really justify it over something like this?<link> just did a random check, and it seems a bare Arduino board with no accessories runs $30. Add another $10 or so for the other components, and you effectively have a $40 power switch for your $50 Pi. I can see some value if you're making a sealed, plug-and-play miner that you will hand off to someone else (or sell on eBay at an insane markup), but I think for most folks, the breakout board above (or heck, a bent paperclip!) would be more cost effective.

### Reply 19:
You aren't missing anything except the fact that it also talks to your Pi and halts it when you want to power off. I'm not even that interested in selling anything. I started a Tindie campaign just to gauge interest, if people like the design and want to source their own they are free to do so by visiting <link> a cheaper board suits you better than by all means use it, I thought there was value in the idea so I produced and shared it. Enjoy

### Reply 20:
Very nice product! One thing the Youtube video didn't mention: Can it support <truncated> I'd like it to automatically power up if it freezes and I power-cycle the PSU. Also, are you selling for BTC?

### Reply 21:
Like I said, it has merit in specific use cases, but in general, it may not be cost-effective. If you can add some functionality to it beyond just a power button, it would be more viable. A couple of ideas come to mind. First, software integration with the Pi so that you could control multiple individual miners and power-cycle a stuck one, or turn on additional miners at set times, when power may be cheaper. Also, Crazyates mentioned auto-power-on; that got me thinking that it would be nice to automatically power on the system as soon as the power supply is plugged in, so that if power goes out in your area, you wouldn't have to do anything to start up your miners after power is restored.Side note, I went looking for a cheaper alternative to that breakout board ($9 each, plus about $10 to ship), and I found this item on eBay. Functional, but certainly not elegant. The guy sells them for $5.50 each, or five for $19, with free shipping in the US.

### Reply 22:
Well the PSU control and shutdown features only take 1,680 bytes on ~32k bytes available, you could go <rest of thread truncated>
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]"
15703,"Date: 2016-02
Topic: Did i find a block or did it not?
### Original post:
i was looking into my Antminer and saw i found a block at ckpool. How do i verify if i did? Below are my <truncated> ""1.71T"", ""hashrate5m"": ""1.59T"", ""hashrate1hr"": ""1.48T"", ""hashrate1d"": ""1.38T"", ""hashrate7d"": ""1.11T"", ""lastupdate"": 1455597056, ""workers"": 2, ""shares"": 312630205, ""bestshare"": 115800637.89150116, ""bestever"": 1790192021, ""worker"": [{""hashrate1m"": ""1.71T"", ""hashrate5m"": ""1.59T"", ""hashrate1hr"": ""1.48T"", ""hashrate1d"": ""1.38T"", ""hashrate7d"": ""1.45T"", ""lastupdate"": 1455597056, ""shares"": 1400375858, ""bestshare"": 115800637.89150116, ""bestever"": 1790192021, ""workername"": <truncated> is from my <truncated> 862 328 889 871 1 167285 0.0954% 14.37 12171.81 1,227,610,470

### Reply 1:
No. Bitmain's cgminer fork is broken with block detection.

### Reply 2:
thanks for the info ... it was a good 3secs of too good to be true

### Reply 3:
You would have to look at best actual share. Right now you would have to be over 163 billion not 1 billion.

","[
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]"
14886,"Date: 2014-01
Topic: CEX.IO-I You Show Me Yours and I will Show You Mine.
### Original post:
I managed to sell yesterday - so I'm down to zero atm.

### Reply 1:
I think I bought in to high, I have seen a good price to trade a without some loss. I would think you need to have at least 100 or 200 ghs to make good on small spreads.

### Reply 2:
It might be interesting to see what the average price per GH/s is. Edit: Also shouldn't the price per GH/s drop some with the latest difficulty rise?

### Reply 3:
So anyone know how to deposit with NMC?

### Reply 4:
All I can say is wow!

### Reply 5:
Whaaaaat? This is crazy!!!! How much did you pay for it?!?

### Reply 6:
I don't think you can deposit NMC on CEX.IO. You can mine them and you can use them to get BTC or get GHS.

### Reply 7:
<link> this is mine

### Reply 8:
<truncated>

### Reply 9:
I find this thread funny because I use CEX.io to trade, frequently, so my hashing rate on there is going to go up and down frequently as well.If you are sitting on your cloud mining GH/s and not buy and selling you may be missing out on non-mining profits. That's my 2 cents.Still..<link>

### Reply 10:
Just found CEX a week ago

### Reply 11:
Lol oh yeah you better watch out.

### Reply 12:
Get on my level.

### Reply 13:
We're almost on the same page:

### Reply 14:
Btw, the cex banner adds up all your ghash.io mining power. I have 3 Block erupter blades running and 2 more waiting to join after I get my new power supply.

### Reply 15:
You absolutely can deposit NMC into CEX.io. You click Fund Account and there should be a NMC address there you can use to deposit NMC to. I just moved all of my NMC out of BTC-E to cex.io because I was getting better prices there.

### Reply 16:
can someone explain how things work with cex.io please?

### Reply 17:
Easy, you can mine or send btc to cex.io to purchase their gh/s that in turns mines for you, cloud mining.Also you can sell the gh/s you buy from them for btc as well, its a commodity market.Icon

### Reply 18:
Im looking on their site and I dont understand this part (tell me where I am going wrong)An example realtime price is .082 BTC for each GHS. Lets say I want to go big and get 1TH/s which is 82BTC. At this point is where I get lost...How long will they hash at 1TH/s for me? Until infinity? The reason I ask is that at a rate of 700USD/BTC it will take over a year to become profitable according to <link> conclusion is the people willing to go this route are gambling on BTC going even higher, or still being able to sell your hashing power in the future? Or was your cost for each GH/s much lower and you happened to get in early?

### Reply 19:
they will hash forever and ever (or until some scam / hack / natural death / it ends). its not really much of a gamble, just a flat out loss versus mining yourself unless you factor in risks like your hardware breaking, house burning down, etc.There was never a point where they were willingly offering GH/s at a ""good deal"" price, one of the larger deals that is pure profit is obtaining the GH/s via referrals. The fact that they're able to monetize this points directly to botnet and/or they are clearly making a good profit on the upsell.In short, they're buying the same equipment you could buy (maybe at a bulk discount, maybe not) and selling it to you and making a profit on the service. As the generation % of 1gh/s changes, the value of it should go down but... randomly hasn't, etc.for example i will sell you a % of my GH/s for 1% more than the coins it generates are worth to be assessed and paid daily. Deal?

### Reply 20:
I have 11.6gh but it's not showing on this banner...strange

### Reply 21:
<link>

### Reply 22:
About 20GHS of this is from referrals. Got one guy who buys and sells 500+GHS kinda interesting watching how he trades, definitely profited.

### Reply 23:
<link>

### Reply 24:
Well when in Roam..

### Reply 25:
Haha, not even 1 KH/s

### Reply 26:
puny especially compared to that over 1ths earlier...da mmmmmmmm boy

### Reply 27:
I was as high as 16ghwhen coins shot up I cashed out.

### Reply 28:
All but 0.15GH is referrals. I did have over 50GH 'cloud' mining and 30GH 'real' miners at one time.

### Reply 29:
2.1Gh/s hardware, few ghash with 0.03 referral hash

### Reply 30:
<link> I swing between 2.5-5gh..... I will be buying more. I also auto buy Hashing power thanks to a small windows program mention on CEX.Io website. Running 9 erupters at 3gh....just for fun. Currently making $1.61 a day profit lol.

### Reply 31:
Not the slowest... but no where near the top!

### Reply 32:
Please make sure you remove the affiliate links before posting your banners in this thread. Thanks

### Reply 33:
Post your CEX.IO stats in this thread. Lets see who has the most.Mode note: Please make sure you remove the affiliate links before posting your banners in this thread. Thanks

### Reply 34:
Well I swing between 2.5-5gh..... I will be buying more. I also auto buy Hashing power than<rest of thread truncated>
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    ""hardware_name"": ""power supply"",
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7539,"Date: 2014-04
Topic: minersource.net
### Original post:
I want to thank Matt from minersource.net who's sending out the two 8pin and one 4 pin connecting ribbons that Bitmain lost . Minersource clearly goes above and beyond for their customers. After contacting Minersource inquiring if they would sell me the ribbons they've gone and sent them out free of charge.I can't understand how Bitmain could fail on such a small issue considering I bought the equipment from them, a problem that they caused failed to admit to, then turned their back on me. Again a huge thanks to Matt at Minersource.net going above and beyond to help me out.

### Reply 1:
I appreciate the compliments! Hope to have your business again.

### Reply 2:
minersorce reached out to me in early march/very late feb.I had a doa s-1 miner purchased from sushi. they took the return and sent me a working miner in under 3 days. the miner is hashing as I type.A great service to me. I also purchased a server psu to run miners from them. And a lot of ant miner U-1'sI made good money on the U-1's Thanks again.

","[
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  {
    ""hardware_name"": ""ant miner U-1"",
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]"
10575,"Date: 2017-10
Topic: Antminer S3 / x4 of them purchased from an auction
### Original post:
Hello there guys, I am totally new to the world of mining and I been reading a lot about how this miner I receive yesterday won't generate any revenue.I have never set up one of this machines before and I would love some help and tips so it could bring some revenue. I know that this machines are ancient but its what I got to work with so bare with meSo far I know about the electricity and internet cost which I pay in a regular basis so I don't worry about itI suspect if my landlord discovered I am mining he will raise my payments but this is not an issue at the moment My internet its paid as well and I shared the bill with my wife which is super supportive when it comes down to businessLet me explain...My landlord offered my a fix rate for my electricity which I been paying for the past 2 years. I don't really use much electricity in my house because I am was not here most of the time (At work) but since I am taking some time off I will be able to analyze and study the Cryptospace and see if it could be profitable (Mining). Hopefully I wont get caught because there its a ton of people living in the building aside from meMy plan is to mine recent coins with a future. Something recen<rest of post truncated>

### Reply 1:
Um, hate to tell you this but the S3 (and s1, s2, s4, s5, s7, s9, T9, R4) ONLY mine Bitcoin or one of the few other SHA256D algo coins. Since the algo is hardwired into the chips that is all they can mine. Period. End of story.The coins you mentioned are altcoins and are mined using GPU-based rigs. Info for them is found in the altcoin hardware section.""Came without wires""? Such as what? All they need is a PSU and network connection. If you are talking about the little ribbon cables that run between the RasPi and hash boards - you are screwed unless someone has a few gathering dust in a drawer somewhere....

### Reply 2:
I'm not sure how much revenue you are hoping to generate, but i reckon with all 4 machines you would be generating around $1 or $2 per day. You might struggle on some pools that do not pay out ""dust"" (ie very small and invaluable) rewards on a regular basis. i understand some pools pay these out on an annual basis so it saves transaction fee's etc. There are however upgrade kits you can buy that greatly increases the has rate of the S3's - search the forum and you will find them (unsure exactly where the post is). This will cost more money to do so, but i would certainly recommend looking into it at lease. PS - not sure on your set up, but 4 antminers will generate a lot of heat and noise

### Reply 3:
The only ones for the S3 were either the ones Bitmain sold to convert an S1 to an S3 which has long been sold out and Sidehacks planned blades which arent out yet and utilize bitfury chips. Search sidehack and youll find it in his post history or recently made threads.

### Reply 4:
Or the apparently very difficult to acquire Hotmine stuff, that turns a S1 chassis into about a 900W miner.

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    ""hardware_name"": ""Antminer S3"",
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    ""hardware_name"": ""Antminer S1"",
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  },
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    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Antminer S4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Network connection"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RasPi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hash boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Upgrade kits for S3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitfury chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hotmine stuff"",
    ""hardware_is_owned"": false
  }
]"
7363,"Date: 2014-03
Topic: BFL Announces 600GH/s 28nm PCIe Mining Card
### Original post:
It's call the ""Monarch""<link>

### Reply 1:
Everyone read this:I have a July 15 2012 pre-order for 2 ASIC SC Singles and I still don't have them to this day. I am coming from a group buy upgrade so I can't really get a refund. I am thankful people with PayPal/Credit Cards were able to get their refunds.Screw BFL.

### Reply 2:
Available in Two WeeksTM

### Reply 3:
No,Shipping begins in Two WeeksTM* *Two Weeks from time of reading statement, number of statements unlimited.

### Reply 4:
Im coming from a July 10 2012 preorder for an Single and still havent received mine either, and of course we paid on the day we ordered.Backing this post. FUCK THEM and their lies.The fact that they go and announce this with plans to ship BEFORE THEY HAVE EVEN FINISHED THEIR CURRENT YEAR+ QUEUE IS BEYOND MEAnyone who falls for this is fucking out of their mind.

### Reply 5:
it looks like loads of people are falling for it all. Until I see a version hashing away, its vaporware

### Reply 6:
Pretty sure it's not vaporware but you will never see it in your hand with a positive ROI.

### Reply 7:
Read carefully: it might ""only"" deliver 480 GH/sFrom: <link>

### Reply 8:
Im not into mining and don't care to discuss the negatives about BFL but that card looks pretty cool. I'd def be getting a few of them (even if they were slower) if I was into mining.

### Reply 9:
Have they shipped anything yet?

### Reply 10:
Uhh, fuck ya. People all over these forums have their ASICs, from the 5GH/s Jalapenos to the 500GH/s MRs. I've gotten 3 different units already.

### Reply 11:
</thread>

### Reply 12:
Delivered via unicorn express; Order within the next thirty minutes for a free golden fleece

### Reply 13:
Yep last time we didn't give you a reach round... But for a paltry 10% they are now available.

### Reply 14:
I'm still in the process of trying to get a refund on my august 2012 order for a single. While there are those of you who have your products in hand, you are in the minority. For the rest of us, I think it's a matter of principle, and maybe a touch of spite even. People don't like being lied to and led on. Personally, it's gonna take something extraordinary for me to consider buying another BFL product again. Especially now, with other options available.

### Reply 15:
From the site...Problem is.... IF you transfer your order, there is even less chance of getting your money back, because it adds another 3 months to the time since you paid.

### Reply 16:
The BFL scammers have opened new pre-orders when they haven't even completed their current crop of orders

### Reply 17:
So what another year of no shipping at all. Notice how the set-up for next round of excuses but we told you it will be really long time begins already on 1st day.

### Reply 18:
Proposed question:I pre-ordered multiple FPGA Single, and I received them all.I pre-ordered multiple ASIC SCs, and I've received most of them. The rest were ordered later, and they haven't gotten to them yet.I will admit that I was contemplating ordering from KNC or BitFury, but now I'll have to reevaluate that position.Out of all the hardware being offered, this new Monarch's claimed specs seem to be the most profitable, and I don't imagine any new hardware coming along and changing that. (KNC is also 28nm, but it's not a full-custom chip. BitFury is a fully-custom chip, but it's only 45nm, not 28nm. Both are just starting to roll out, and neither has any units in customer's hands. Avalon or ASICMiner could die-shrink, but I don't think that will help. They'd have to redo everything to accommodate a larger, <truncated> design.)So they have a spotty track record, but they've always delivered. They seem to have the best product for sale (or pre-order, depending on how you look at it). Why shouldn't I buy one? Or 10?

### Reply 19:
Forget about all the tech mumbo jumbo it all boils down to a very simple statement. By now most ASIC manufactures can self fund since they collected plenty of money over and above their costs on these 1st batches. Also they have plenty of information regarding hash rates, possible sales price points, wholesaler demands, consumer demands and prices they are willing to pay in relation to all the other factors, etc... So the only reason to do pre-orders now is because they think what they are getting now will be a lot more then what they possible can get if they simply built it and sold it as it is coming in. And that's the nice business version. The nasty version is we collect pre-order money build it and if it is worth more then what we collected we will sell a bunch out the back door or give out to friends and relatives first before starting to ship. I would love to hear a different argument.

### Reply 20:
BFL is probably not capable of getting new money / to many refund requests and that is why they are launching this new product. To make sure all the late orders are still <rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC SC Singles"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5GH/s Jalapenos"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""500GH/s MRs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FPGA Single"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC SCs"",
    ""hardware_is_owned"": true
  }
]"
16580,"Date: 2023-09
Topic: Decentralisation of the Bitcoin mining pools
### Original post:
Hi,Looking at the hashrate distribution I notice the top 2 pools control more than 50% of the network. Does this not concern anyone that Bitcoin has less than 20k nodes and a hashrate hyper concentraded -- considering the narrative has always been censorship money. It is unlikely but Foundry the biggest mining pool with close to 30% of the network hashrate is based in the US -- there is a scenario in which the US could ban bitcoin, its usage or simply mining. What would happen in that case ?Does the concentration between AntPool and Foundry scare anyone? > Hashrates will be more and more concentrated over time [as the network grows in size and hardware becomes more expensive] does this not threaten the sovereignty of the network -- going fully against the Satoshi ethos ?How far did Satoshi envision the decentralisation, are there counter mesures at hyper concentration events? What could be done in order to mitigate that?Does it pose an existential threat to the value proposition of bitcoin ?I would like to get different views on that and none with the Stock-to-flow answer.This leads me to my ultimate question: if bitcoin is centralised how good is it ? notably in comparaison to oth<rest of post truncated>

### Reply 1:
A mining pool cannot ban bitcoin mining even if it has more than 51% hashrate. The pool may not take transactions into its own blocks, but then the profit of the miners on this pool will greatly decrease. The miners will go to other pools, and this pool will go bankrupt and lose customers due to the scandal. I don't think that the mining pool will violate the rules of coin mining.

### Reply 2:
To put it simply, either they follow the rules or they fork to a new coin.If they fork to a new coin, then that wont be Bitcoin and the miners will leave.As for transaction bias, well as long as you stay away from braiins pool who is actively promoting transaction bias,for other pools, if the pool itself stops allowing all transactions, then yeah, people will just go to another pool that will give a better return.Complete lack of transaction bias ensures a maximum return on mining, which is bitcoin by design = allow all transactions, highest fees get confirmed fastest.

### Reply 3:
Miners start using other pools.NopeI don't think there is any threat. Miners will keep getting in and exiting the network depending on how affordable and profitable it is to them. The Hardware is only expensive because it brings in good profits. So even the mining hardware manufacturers have that in mind. You can't price hardware at $100,000, yet it can't even make $1,000. Who will buy it?

### Reply 4:
~16.5K reachable nodes[1] and ~75K nodes[2] isn't worrying for me. As for pool hashrate, my only concern is they could perform attack which doesn't attract much attention. For example, exclude certain transaction or fill block with their own ""non important"" transaction[3]. Otherwise, i expect they'll follow consensus protocol since it'll lead to more profit on long term.[1] <link> <link> <link>

### Reply 5:
I'd say way better. If you argue that mining centralization is a big issue then other blockchains have other forms of centralization that might affect the network more than some miners mining in one pool IMO. For example, developers belong to one organization that needs to follow regulations where they live, new miners/node need to be approved by some people before they can start participating in the network, and so on. In my opinion, the chance that your transaction is blocked in such a blockchain is way higher than if you use Bitcoin, even if mining power is concentrated on one or two pools. CMIIW.

### Reply 6:
If you look at the old information on pool hashrates by country, then China was in the lead before the ban on mining in this country. In POV mining, it is impossible to block transactions because miners want to get the maximum profit from their work. And in POS mining, the owners of most coins can always change the consensus rules.

### Reply 7:
it is concerning. many are concerned

### Reply 8:
Who are these many? Pools have come close to if not gone over 50% in the past. And large groups of miners left them and went elsewhere. When pooled mining first became a thing there were only a couple of major pools and everyone else was still solo mining. It's not a real concern for people who understand that everything is always going to be in flux with this. The real major concern, which is still not a real concern, would be who controls the miners that are mining at these pools. If some government wanted to take over Bitcoin mining they could over a period of years acquire well over 50% of the hash rate. But if they took part of the hash rate and pointed it to one pool another part to another pool and so on, nobody would ever know about it until all the sudden they pointed it at their own pool. But due to the power requirements whic<rest of thread truncated>
",[]
647,"Date: 2013-07
Topic: [OPEN] [14/50] Australian ASICMINER USB Block Erupter Group Buy
### Original post:
Order StatusWe are currently up to 14 out of minimum 50 units required.

### Reply 1:
Updated the first post with a recommendation to purchase BTC through Bit Trade Australia instead of buying from me in AUD. This will be faster and cheaper for buyers!Also added a note about confirming payments have been received either with a bitcoin-qt or GPG signed message.

","[
  {
    ""hardware_name"": ""ASICMINER USB Block Erupter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BTC through Bit Trade Australia"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bitcoin-qt"",
    ""hardware_is_owned"": false
  }
]"
9449,"Date: 2015-11
Topic: Hashfast Babyjet
### Original post:
hi.i have a Hashfast Babyjet and i'm wondering if anyone knows what mounting bracket thats used on it.standard pc like 775/1155 or if its 2011 socket.atm its runnning at 600mhz and the temp is 87-89 so pretty hot i've tried change thermal paste but that didnt help.was thinking its the watercooling thats getting old.wont do much to get the temps down if it cost to much rather ""let it run until it dies""

### Reply 1:
This may be a hard question to get an answer to. If I understand correctly, the majority of Hashfast ""Babyjet"" customers never got their hardware. I will see if I can find anything online and bring it back to this thread for you.

### Reply 2:
thank you.tried to find but not that much info out there. witch explains it if not many got the machines

","[
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    ""hardware_name"": ""Hashfast Babyjet"",
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  {
    ""hardware_name"": ""mounting bracket"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""775/1155 socket"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2011 socket"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""thermal paste"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""watercooling system"",
    ""hardware_is_owned"": true
  }
]"
21284,"Date: 2017-02
Topic: S5 Startup/ Unable to access Miner UI via IP
### Original post:
Hi there I have been trying to connect my S5 Ant Miner to my network for the last week and it's just not working. I have done all the research I can and it has got me nowhere. I really need some help. I have a 1200 watt HP power supply with a breakout board adapter with 6 pin connectors. I've contacted the seller because i think they tried to short me do to the fact there are only 2 wires going into the 6 pin connectors instead of 6. The power supply is functioning and receiving power it has a led display that shows what the power output is. It says it's outputting 12.2. The miner powers up but I am unable to access the miner UI through the IP address. I am able to ping the miner and no pings are lost o% loss. There are 4 green lights and 1 red light in the middle, of the bottom antboard. I have pictures of the unit and the setup but am not able to attach them to this message. I'm definitely outside my depth rn and would love some help thanks all! New to the forums. Sorry if the question formatting is incorrect.

","[
  {
    ""hardware_name"": ""S5 Ant Miner"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""1200 watt HP power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""breakout board adapter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6 pin connectors"",
    ""hardware_is_owned"": true
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195,"Date: 2013-06
Topic: USA/Canada [Group Buy #4 @131/50] ASICMiner Erupter USB 2.04236 each @ 5 units
### Original post:
Upgrading my order to USPS Express:<link>

### Reply 1:
Canary, I don't see myself in the updated OP, even though people who ordered after me in the thread are up there. Can you confirm that you got my payment and confirmation? Thanks!

### Reply 2:
see OP

### Reply 3:
Cool. Thank you!

","[
  {
    ""hardware_name"": ""ASICMiner Erupter USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USPS Express"",
    ""hardware_is_owned"": true
  }
]"
14107,"Date: 2011-06
Topic: Is there any way to place 4x6990 into one case ..
### Original post:
..without using extra adapters? wich PSU is good for that?how much is the maximum watt? 4x375 on full power right?mainboard is MSI 890FXA-GD70 (Socket AM3AMD Sempron 145 2.8GHz BoxPOWERCOLOR Rad. HD 6990 4096MB Rt. CORSAIR CMPSU-1200AXEU 1200W was planned but is that enuff??and of course i want do downclock the memclock ..what would be a good value??how much can i reduce the watt per card and still run them at around 800mh/s?

### Reply 1:
The heat will be too much of a problem unless you water cool. They will not last.

### Reply 2:
there is a Watercooled version avaliable <link> they say i have 30% less heat ..is ith workbale then?i have added all possible coolers and maybe will only work 3 of them at every machine..but for now i need to know if it works out with the power consumption on the 1200watt PSU ?thank u very much for ur help!

### Reply 3:
Do note, You will still need a radiator/pump and reservoir for those water cooled cards. All they come with is a waterblock preinstalled.

","[
  {
    ""hardware_name"": ""MSI 890FXA-GD70 (Socket AM3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD Sempron 145 2.8GHz Box"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""POWERCOLOR Rad. HD 6990 4096MB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CORSAIR CMPSU-1200AXEU 1200W"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Watercooled version of HD 6990"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Radiator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Pump"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Reservoir"",
    ""hardware_is_owned"": false
  }
]"
15415,"Date: 2014-11
Topic: Sidelined
### Original post:
I'm a newbie GPU miner. I chose GPUs and still would because I enjoy the flexibility of gliding across the algorithm spectrum over which bitcoin reigns. I held out and mined as long as I could to attain the almighty bitcoin. Finally, I've come to the conclusion that my miners will sit idle until the crypto scene is once again profitable here in the land of $.15 per Kw/hour electricity. It hasn't even been a year since I started which leaves me with severely dashed hopes. But I am still hopeful for crypto to once again make headlines and have GPU prices soaring far past what they should be. I'm proud of my own accomplishments even though I haven't yet been profitable. I built a respectable fleet of miners totalling 15 GPUs across 5 platforms. I gained an appreciation for server managers as they are surely profiting despite recent slow downs. I sorted through code, learned about compilation and dependencies and tweaked/optimized feverishly to attain optimized mining results.I do continue mining on some cards that are more cost effective so I have some meager bitcoin coming my way but not much. I'm eyeing the markets like a hawk and hope to see my GPUs reenter the fray someday.This ha<rest of post truncated>

### Reply 1:
I don't think you will ever be mining with those GPUs again. I calculated that with the current difficulty, a GPU with an efficiency of 3 MH/J will break even at $0.10/kWh only if BTC is over $64k.

### Reply 2:
You are not a newbie to me. You are a guru already.

","[
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    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPUs"",
    ""hardware_is_owned"": true
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]"
4680,"Date: 2013-04
Topic: Avalon Batch 1 Unit won't power up.
### Original post:
Are there any LED inside avalon lightened ?Maybe your power cable is broken ?

### Reply 1:
check if all the cables are connected correctly.

### Reply 2:
Grab a voltmeter and verify that the outlet has power, the PSUs have power, and that you have tried one from the confirmed working PSU list.<link> it open and carefully, after touching the case to discharge static, make sure that nothing is unplugged. Care to post pics of the inside so we know what you're seeing? Maybe someone will catch something you've missed.

### Reply 3:
How about disconnect 2 of the 3 modules and test 1 by 1 to check if 1 of the hashing modules has problem?

### Reply 4:
1) Make sure the PSU will turn on without being plugged into anything with the ""paperclip test"" <link> it does not power on then you have a bad (or 2 bad) PSU and need a replacement, I recommend at least 750 watt preferably 1000W+2) If PSU does power on, then make sure you are connecting the power cables correctly:Note: some of the internal cables and connectors could come loose during shipping. Not likely but possible, they should be checked to make sure a flush and tight connection is made - make sure everything is plugged all the way in.The far left 6-pin port connects via a short cable to the controller board. Don't mess with it. Next to it is the ATX_24p connector. It has 24 pins and it connects to the big 24 pin connector (some PSU have 20 + 4 that need to be pinched together during plug in, this can cause a problem if the 20 pin clicks in but the +4 pin is not completely plugged in). Make sure the PSU 24 pin is plugged in correctly, with the depressable tab on ""top"" facing to the right where it matches up with the tab catcher on ""top"". It should click when it is all the way plugged in. It is a tight fit and hard to get this plug in without hurting your fingers or using needl<rest of post truncated>

### Reply 5:
Thanks for your advice! I got it working! It was a loose cable and thanks to your advice I found it.

### Reply 6:
Good to hear, happy hashing

","[
  {
    ""hardware_name"": ""LED"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""voltemeter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing modules"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""internal cables and connectors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATX_24p connector"",
    ""hardware_is_owned"": true
  }
]"
7913,"Date: 2014-06
Topic: Hardware - It's really hard to buy mining hardware
### Original post:
I am relatively new to bitcoin mining and it's really hard to decide on which hardware to buy and from where. I see all the complaints about buying a pre order, so I will never pay for something that is not already shipping. Then there are those obviously fake websites trying to claim that they have a 15 TeraHash miner and another that advertises that by September they will have a miner running at 6 TeraHashes for only $5,000. And then even if you want to buy a machine that is actually real, would you send your money to China with no recourse if you don't receive your machine. Why do these companies only want to be paid in bitcoins or with a wire transfer, if they are not scams? Now I see a company advertising a 600 GH and a 1 TH PCI card - wouldn't that be great if we could use our computers again to mine for bitcoins, but I'm not going to take a chance and pre-order one of these cards for $3,000.I want to buy something with a credit card or with Paypay. I have purchased my mining hardware from EBay - I have 9 Antminer S1 systems. They may not be the latest and best, but I have received them without being ripped off.I'd like to know what every thinks about all the scams out there <rest of post truncated>

### Reply 1:
Just buy coins.

### Reply 2:
I don't mine, but I think a major problem with getting the hardware is how long it takes to get to you after you order it. I have heard that often times by the timeyour equipment reaches you, it is almost outdated and there is new equipment out there. As the difficulty continues to increase, it often times would be better just to buy the BTC from an exchange (if that is your ultimate goal).

### Reply 3:
So if coins are selling for $600, then I could buy 8 for $4,800. What could I hope to make? Where do you think the price is going? Double, Triple or back down to $200. I lost money in the stock market - I don't plan on losing money by buying coins. I don't know why the latest strategy and suggestion is to buy bitcoins? Maybe when you could buy 10,000 for $1 when they first came out as a joke, but not at $600. Sure, it's possible that a coin will be $5,000 a year from now, but I have my doubts.

### Reply 4:
If that is the case then you will lose more if you buy hardware.If you buy x coins now, they will still be x coins in a year.If you buy miners now they will be obsolete within 3 months.EDIT: If you are determined to get miners my advice would be the Antminer S2

### Reply 5:
Reputable place would be Bitmaintech .com or Jonesgear .com if you want to pay in paypal or credit card. Bitmain is only bitcoin or bank wire transfer. 73'sIn Bitcoin We Trust!Edit: Bitmaintech has the miners to my door in 2 1/2 days to Midwest from china.. Jones Gear drop ships from bitmain may take couple extra days..

### Reply 6:
Just to give you an idea an AntMiner S2 (running at 1TH/s) would yield about 0.3 BTC/day ($23/day). Assuming that difficulty doesn't change (IT WILL!) you'd ROI in roughly 100 days. You won't be able to run an S2 profitably (assuming $0.10/kwh) after network rate hits ~800m. If you have cheaper power (unlikely unless you're on a big commercial plan) you might make it a little longer, say 1.5b GH/s.

### Reply 7:
It is easy to buy hardware, it is just hard to have it arrve, arrive on time, arrive on time and work.why not hold on to your coins, past experienc shows it is the best way to make money with bitcoin. not the answer you wanted to hear but its the truth.

### Reply 8:
Mining is a risk just like buying, only difference with buying a bitcoin is that you do not need to see a $12k appreciation to breakeven.

### Reply 9:
I think you mean the Antminer S2 is making 0.03 BTC / day

### Reply 10:
If you're dead set on buying mining equipment that ships in a week and using your credit card, I'd recommend this company:<link> the best prices, but should be on your doorstep in less than a week and you can use either bank wire, BTC, or credit card to pay.Also, if you're just starting out, I'd recommend one of the smaller miners like the Rockminer R-box or Antminer S1 to see if mining is for you.

### Reply 11:
If it's not pre order (you have to know who you pre order from) it is not profitable. It's pure and simple loosing money. So, it is better to buy coins and hold. As simple as that.

### Reply 12:
No more questions, just do it. Bitcoin may be trustless, but you can trust the good honest folks on this forum.Except the ones trying to sell you gambling shit in their sigs, those guys are aholes.

### Reply 13:
Hey, I take offense to that! My sig is purty and shiny.I'm Mister Asshole to you.

### Reply 14:
Well it isn't really that hard to buy hardware, but if you wanna ROI or profit.. that isn't easy. I see mining more of a way to support the network these days. If you wanna profit, then you should buy coins instead and just hold for long.

### Reply 15:
I recommend GAWMiners<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""600 GH PCI card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1 TH PCI card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Rockminer R-box"",
    ""hardware_is_owned"": false
  }
]"
3145,"Date: 2014-03
Topic: EU - Bitmain S1 - Shipping DHL or Fedex
### Original post:
Hi, when I am at work I use this account as I don't know my password which is saved on my house PChave 990 units instock from china.Delivery now via Fedex or DHL Just sent a parcel to uk arrived in 2 days with 28 customs via my agentBitmain has temp stopped sellingI sell mine in price in euros or BTC or ThanksIf you want to make an order please order via my website in a ticket <link>

","[
  {
    ""hardware_name"": ""Bitmain S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  }
]"
11605,"Date: 2011-08
Topic: SCAM: CoinMiner at bitcoin-miner-pro.com steals wallet
### Original post:
It's come to my attention that a miner called CoinMiner is being distributed at <truncated> is nothing more than my own GUIMiner with a wallet stealing trojan attached. DO NOT DOWNLOAD this miner unless you want to lose all your coins and maybe worse. It will not increase your mining speed or do anything else magical except send your wallet to some scammers.I'm very upset that my free software is being used in this way and have contacted the site owners, but I don't expect that they will be very cooperative. I just wanted to warn people not to use it, and if anyone wants to DDOS their site that would be cool. (Joking)

### Reply 1:
Site's down now.

### Reply 2:
well, I hope you consider changing the license of GUIminer to something that makes it stay free software, but prohibits malicious redistribution of that code. At least you could then file a lawsuit against them, for copyright issues. Also, be sure to get a whois output for their domain and report their doings to the registrar. then do a whois on the ip-address where the site is hosted and write some mail to their hoster.(if domain registrar and hoster are not the same company). These usually react fast to complaints. They react even faster to DMCA complaints(in case you really change your license)

### Reply 3:
Sometimes when visiting it I get an error, other times it goes through. Looks like the server reliability is not great. I'm still able to access the site now.The license is GNU GPL and I believe they are already in violation of it (though I'm no lawyer), at least by not distributing the source code to their modified version. I tried a whois and apparently they're with ezinom.com. I guess that's who I can write mail to?

### Reply 4:
403 Forbidden error..It seems they already went down.. or away..

### Reply 5:
Got a couple SPAM emails from then as well :/The address was apparently harvested from the Mt. Gox database leak.

### Reply 6:
yep, ezinom.com should be responsible. If they do not react, you can also contact Californian Authorities for (helping) violating the US-CAN-SPAM act(ezinom is, according to their whois record listed as a company in CA). US-Authorities can then seize the domain name.

### Reply 7:
I just filed an abuse report to the abuse contact of solid.nsjet.com (where the emails were coming from, which is the same IP address that is hosting the site), after they basically acknowledged that they are violating CAN-SPAM, claiming that it doesn't apply to them because they are on the Bahamas, and explicitly refusing to exclude me from further mailings.

### Reply 8:
I installed this fu**** sofware 2 days ago and obviously I lost my 0.25 BTC (I just start mining so I don't have a lot of BTC). I scanned it with AVIRA Antivir and no virus were found...I uninstalled it and deleted the install folder but is it enough?How does it works?Does it send the wallet to someone or does is use the bitcoin software of the PC so send directly the BTC to an adress?

### Reply 9:
Seems like the abuse department did their job well: the vhost seems to be gone

### Reply 10:
Weird Avira caught the miner bot within a day or two.Not sure but did you keep your wallet in the default location?I won't go into wallet security here but anyone new to bitcoin should look around posts on here to see basic security measures to take.

### Reply 11:
Yes it was in Roaming/bitcoinhow can I change it?

### Reply 12:
@TheSevenif a hosting provider does not agree to stick to such things as SPAM ""because they are offshore and dont give a crap about foreign laws and policies"", you can and should always make clear that you will warn others to stay away from them because they condone spam. If they are a serious business they will know what happens to hosters that allow spamming: People will stay off them because they could have a spammer on their node having negative effects on their own website rating.You could also try to go a level up - I had this some time with a US company that simply ignored the spam issue - They were hosted with BurstNet(who are pretty strict and fast when it comes to the do nots) as resellers. So I contacted burst and it took about a day until the whole hosting company went offline. Also I'd consider asking a lawyer(there are lawyers that accept bitcoin) for a new free software license that allows modification but forbids malicious modification. Unfortunately you cannot alter the GPL or most other licenses to adept to your likes, because the weird thing about those licenses is that they are usually under pretty restrictive licenses themselves(i.e. if you alter the GPL you br<rest of post truncated>

### Reply 13:
heres another copy <link>

### Reply 14:
Are you sure maybe they are being hacked... ZOMFG GOXEDE!

### Reply 15:
User ""leon"" is a scammer:<link>

### Reply 16:
Windows Defender flagged my GUIminer.exe as a trojan this morning. It was the 201106<rest of thread truncated>
","[
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  }
]"
8996,"Date: 2015-03
Topic: UNOfficial AMT Thread round 3: The Uncensored version.
### Original post:
Posted to remind Joshua Zipkin of RealityOh Josh.. you seem to have forgotten just who made that chat room - ME. EVERYTHING POSTED THERE IS 100% ACCURATE. For those who need a refresher course in reality, here you go:<link>

### Reply 1:
and more before it goes away...We've always liked you Rich, but if that were a true skype chat wouldn't you be in breach of your NDA? And no one cares about 200 pages of a bullshit skype chat where you and tony are doing most of the talking. Really, who cares? All of the 156 clients that we have? The micro community that's left on this forum? Again Rich, with respect please do stay out of these distractions or arguments. Ja is there no relief for the son of a window?[/quote]You mean the NDA that you never signed? Takes more than one party to make an agreement bucko. Yes the chat room is 100% true and no I am not in violation.That aside, the real IP points are all in the pm chats which even though am NOT legally bound to keep sealed (remember? You never signed anything?) I still am. Professionalism and all that ya know? Scratch that - you wouldn't.

### Reply 2:
What Tim says about Tom says more about Tim than it does about Tom. I will let the community digest that one, while Joshua Zipkin continues his virtual vendetta against me and my family. As he cannot censor this thread, he has instead also opted to use my username here instead of my real name which I have not given him permission to use publicly. ALSO US laws prohibit such disclosure of info by business owners. He has broken a number of laws in these actions. I will continue to respond to his actions in kind.

### Reply 3:
Decided to spam into my thread in large red letters. But since he decided to censor my post...as stated I will repost here. THe truth will out. Again his actions speak MUCH louder than anything I am saying. But the proof is here.

### Reply 4:
Desperation Joshua Zipkin CEO of AMTminers.com? Cause that is what it looks like

### Reply 5:
FOR THE REAL UNOFFICIAL AMT THREAD #3. PLEASE CLICK HERE. <link>

### Reply 6:
This little tantrum of Joshua Zipkin's and directing against me in particular with complete lies of 40Th farms and crap (actually YOU had the 50TH farm...anyone can look at the chats for that). At this point you took mine and others money, screwed us on hardware, backed off on your own MPP (miner protection program) compensation program by your own admission, and then anyone who called you on it you took to posting their information on the internet including mine.

### Reply 7:
for the official line of bullshit click the link above.

### Reply 8:
For anyone looking to post their deleted posts from the official thread in. Meant as a mirror to the ""Official AMT Thread round 3: Future Plans.""And for legal reference for anyone looking at <link> you can reference this thread for any deleted posts. It will be removed if AMT removes theirs however and retracts ALL negative statements against me and anyone else they libel against.Considering the financial damages that AMT has caused every one of their customers, and has not posted a plan but merely alludes to a plan to refund, and instead spends the bulk of their opening post attacking me, I have opted to do this. I am left with no choice but to defend myself against such hostile actions by the CEO of a company that has taken money from people and provided inferior undervalued products that NOWHERE NEAR look like what was advertised. On top of that they do not perform as stated. When I worked WITH him to try to address these issues (detailed in the chats) I did so with the expectation that it would lead to compensation for everyone. Now he claims the chats are false. I will leave that to various investigations to look at and validate. The chats will be posted by the owner of the gr<rest of post truncated>

### Reply 9:
Since so many of the customers on here are not speaking up for themselves, I figure they can I am giving Josh an out as I am tired of this nonsense. But I did get screwed of 11k. I am not letting that go until I get that back. But if noone else wants to fight for their money, thats on them. People should be speaking up but few do. I am tired of doing it for those who are not willing to fight back for themselves. This man took your money and some of you still have not received hardware from what I have been told. OPEN Letter to Joshua Zipkin AMT_Miners:You know what Josh? You want this all fixed? Fine. There are a ton of unhappy customers, but a few are speaking up for themselves any more. I am not going to keep at that if they are unwilling to do anything for themselves either, I'll keep it simple. I am not going to do their job for them. They want their money back then its on them, they have the info they need to proceed how they wish.I am tired of all this crap. I will agree to remove ALL of my posts about AMT ONLY if the following cond<rest of thread truncated>
","[
  {
    ""hardware_name"": ""40Th farms"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""50TH farm"",
    ""hardware_is_owned"": true
  }
]"
543,"Date: 2013-06
Topic: [BFL ASIC Chips] $59/chip. Batch #1 75 left. 50% up front
### Original post:
Price lowered to $59/chip, including shipping. 50% upfront.

",[]
12717,"Date: 2013-11
Topic: Is there a Tutorial on how to solo mine in windows?
### Original post:
Hi,I'm curious if anyone has a link to setup a miner to farm solo with windows. I've seen a Linux guide, is there any for windows?

### Reply 1:
Are you sure you want to solo mine? You will not really earn from solo mining now. It can take years to find a block.

### Reply 2:
I just thought i would try it on and off, I know the odds are not in my favor and pool farming is more steady/consistent but hey i might try a week or something and see if i get lucky. I do have 500gh/s of hashing.

### Reply 3:
Given that it is luck based, some people do this like playing the lotto.

### Reply 4:
<link>

### Reply 5:
There is a guide here <link>

","[
  {
    ""hardware_name"": ""500gh/s of hashing"",
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  }
]"
8743,"Date: 2015-01
Topic: BitSyncom, what compensation is planned for chip buyers/trade in customers?
### Original post:
If you could provide some more details on the plans for this it would be greatly appreciated.Thanks

### Reply 1:
I was wondering too because at this point most of us still haven't gotten assembled miners and are looking at a 60% loss of their investment.

### Reply 2:
Good luck with that!

### Reply 3:
yes we are also interested in this

### Reply 4:
lets be fair, he really owes compensation to everyone except B1 buyers.the rest of us were not special...and we ended up ruffling his chi feathers

### Reply 5:
I seriously doubt you will get any compensation.

### Reply 6:
i'd be happy with a refund, he's had our monies tied up for months now has anybody actually received a refund for a chip order yet?

### Reply 7:
Ya hopefully Avalon is done now. There is just better options. I feel for you guys, Avalon boned so many customers. I was in the 2/3 months late batch 3 avalons and though I'll probably never break even I feel lucky that it was even <truncated> those days are all done now that there are much more reliable options on the mark (or soon on the market).

### Reply 8:
We'll get a bumper sticker with ""YIFU for President"" and a very cute fluffy toy to pet so we can soothe ourselves. Also the toy is loaded with good Chi, hugs and kisses. Also kittens and rainbows.

### Reply 9:
Yifu will let you fuck his ass.

### Reply 10:
Doubtful, that would likely(?) damage his Chi.

### Reply 11:
He would suck your dicks. Hows that for compensation? A bitch gotta know how to suck right?

### Reply 12:
Since Avalon is auctioning their new 320-chip models starting at 16btc, (.05btc/chip) the chips alone are maybe worth half that.

### Reply 13:
Your compensation is you can bid on the units they have been hashing with for the last 6 months

### Reply 14:
If stupidity was an olympic sport he'd win GOLD in 2014 lol

### Reply 15:
Agreed. Chip buyers should be refunded to equalize this price point at bare minimum. They are literally selling entire pre-built units for HALF the price that chip buyers paid for just the chips to go into a unit.For example, 320 chips at half the price of a unit = 7.5btc which comes out to .0234btc per chip. 10,000 chips * .0234 = BTC234. Thus, it equates that chip purchasers should be refunded at LEAST BTC550 per order. Even at that price point Avalon would cover their costs of the chips and still be making a significant profit margin on the chips.

### Reply 16:
That's not even mentioning the price break for buying 10k chips. I think a case could be made for a sub .02 value. Still, Yifu needs to make this right, or risk a rep. as bad as Pirateat40 aka Trendon Shavers.

### Reply 17:
Too late... and I think you mean as bad a rep as Josh aka Inaba.

### Reply 18:
Complimentary Chinese Dust mites included at no extra charge!Each dust mite with perfect Chi

### Reply 19:
Still looking for answers....

### Reply 20:
You'll have to find answers in a legal action.

### Reply 21:
""Go hug your mother (or something)"" by Yifu Guo, 2013 All Rights Reserved.

### Reply 22:
LOL great

### Reply 23:
^ Looking for updates...

### Reply 24:
BitSyncom will issue compensation when hell freezes over.

### Reply 25:
<link> Chips at 100 BTC, those who pay more than 700 BTC we felt ripped off, the price of bitcoin has not risen as much as 7 times to reduce the cost, we have all lost our bitcoins not rising difficulty, just to pay the profit margin of these people ... if we had paid 100 BTC in his day could still reach the ROII hope everyone take note, we are being ripped off with the profit margin of manufacturing a asic.

### Reply 26:
Still waiting for my chips/miners from zefer/burnin and now I see chips for a fraction of what I paid.This game moves fast and I guess I am not fast enough.

### Reply 27:
Fuck you yifu.

### Reply 28:
No you wouldn't.

### Reply 29:
YIFU = Yes I Fucked U

### Reply 30:
He will issue few just for the show. He will need some image lift before they come here with their gen 2 pony show.Just make sure you follow them where ever they go online to remind them what they did.

### Reply 31:
Enough morons will still buy his crap,the greed overpowers morals <truncated>

### Reply 32:
China & Greed... 'SURPRISE'!!

","[
  {
    ""hardware_name"": ""assembled miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chip order"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""batch 3 avalons"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""320-chip models"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pre-built units"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
  }
]"
20415,"Date: 2015-05
Topic: Setting up Drillbit Fury Thumb- SOLVED- Now need OC help
### Original post:
Hey all,This is the Fury Thumb from the original v1.2 group buy, not avalon.The drillbit forum used to have everything I needbut it is offline. Even wayback machine can't find it.I used to run it with cgminer and a shortcut that you used as the target. It contained the path, drillbit options, timing,and more. I pretty much need it in cut and paste format as I neverreally understood it, only that it worked.There were also reset instructions where you crossed a couple of pinsuntil the led flashed differently.Lastly, and not crucial at the moment, there were instructions onoverclocking, but getting it running is whats important now.I'll appreciate the help.

","[
  {
    ""hardware_name"": ""Fury Thumb"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": false
  }
]"
23595,"Date: 2021-06
Topic: we need frimware old
### Original post:
hi my dear excuze me i just want frimware old for miner E9.3 and E10.3please i waiting for you E9.3 <truncated> send me link download here or on the my account telegram <link> number for whatsapp and <truncated> i just need this version for two device

### Reply 1:
Have you tried to use the search button on this forum?There are lots of old posts about this firmware for ebang miner next time use the magnifying glass near the search bar.Check this for e9.3 firmware <link> e10.3 check this firmware below. - <link>

","[
  {
    ""hardware_name"": ""E9.3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""E10.3"",
    ""hardware_is_owned"": true
  }
]"
19416,"Date: 2014-06
Topic: Antminer slow down
### Original post:
Hello,I have an antminer s1 overclocked. When I first set it up I had 200gh easy. Now it hashes about 175-180gh.What causes the slow down and can I get it back up to 200gh?Thanks.

### Reply 1:
Are you reading the speed at the pool or on the internal web display?

### Reply 2:
That is your problem. You have a blade down. Turn it off for a few mins and reboot and see if you get that blade back. Check the cables as well. If the power falls off to the slave blade this can happen.

### Reply 3:
look at this screen shotit is wrong can you tell why? my averages are good but only 1 row of asics is displayed.my website tells me I am hashing at 200gh so it means the error is on my end the GUI is wrong both halves work.you may be the opposite your GUI may say both halves are hashing and they are not.you also may have some x's not all 0's that means less power/hashI will reboot my ant see second screen shotI rebooted and I am waiting for the new numbers to pop upthey popped up I now show 2 rows of all zeros which is correct.in both cases I have been mining at 200gh but my reporting screen was wrong. try a reboot if you do not have 2 full sets of 0's like the second screen shot

","[
  {
    ""hardware_name"": ""antminer s1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blade"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""slave blade"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asics"",
    ""hardware_is_owned"": true
  }
]"
13268,"Date: 2014-10
Topic: Spiceminer's Ant Viewer - SAntViewer v1b  - Antminer s1 & s2 monitoring - BETA
### Original post:
It doesn't... you can try it out and let everyone know how it goes, or if you're available tomorrow I'll Skype with you and show you the source code. I didn't really intend for this to be open source because it uses telerik winforms controls and you need a license to legally use them and also just to even download them...pm me dogie maybe we can figure out something, I'll think about just releasing the source code as well

### Reply 1:
FYI SAntViewer does not require privileged access to run and to view the stats from the miner(s), nothing about the miner can actually be changed unless you allow privileged access to the IP SAntViewer is running on.advanced features like restarted, anything that modifies cgminer... etc... etc.. require privileged access...

### Reply 2:
I think he's more concerned with other Malware that may be packed in here like wallet stealer etc.

### Reply 3:
yea I understand, its a shame to have to worry about it. if you're game and have Skype i'll walk you through the code and app...

### Reply 4:
run it through a virus scan...

### Reply 5:
added ability to scan for antminers. its pretty fast. it takes about a minute and a half to scan an ip range if no miners are present. you can always click ""done"" if you know its already found all the miners you have. entering in the username and password will automatically populate it when the miner is found

### Reply 6:
source posted, only download the app from this thread.

### Reply 7:
added ability to restart miner. requires privileged access.

### Reply 8:
Google Chromes phishing filter pops a warning when I try to download this. Not saying there is anything malicious in it, just letting you know parts of your code are getting confused with malware.

### Reply 9:
yea it chrome does it all the time. its a bit sensitive about zip & exe files. its not analyzing code, its just warning because of the zip with an exe file in it.

### Reply 10:
Nice one <truncated> on Server 2012 R2 and working fine with my S1s and S3s It handles an Antminer being offline, no problem.One thing I miss on the main screen is the Best Share column.It's handy to see at a glance which miner has got the best shares for p2pool.Other than that your software is working much better than the other Antminer software that I've been having issues with lately.Well done!

### Reply 11:
cool, thanks for checking it out. I don't have any s3s yet. I do have some ordered in the sept 30th batch. still a month away. i'm glad to hear the cgminer API is backwards compatible.i'll add best share in for you. I didn't know if people thought it was important or not.im also working on some alerts, its a little more complicated than just displaying some nice data.

### Reply 12:
Just found there is a problem when I tried to restart one of the S3s.Got the following error.Just tried to restart an S1 and got the same error as well. They do restart though.Thanks for adding Best Share on an upcoming release. :-)

### Reply 13:
just deployed new version with best share.i'll fix that bug, maybe later tonight. gotta get my truck and camper trailer ready for some serious camping this weekend thanks for checking it out and the bug reports<link>

### Reply 14:
Nice one. I'll install it now and let you know if I encounter any other issues.Enjoy your weekend!

### Reply 15:
plz remove this stupid post, the source code is posted and you have no evidence there is anything wrong with the app. this is starting to irritate me

### Reply 16:
The fact that you were 1) so resistant to posting the source code in the first place, then 2) made up excuses that it was illegal to post the source code, then 3) magically posted the full source code suggests that yes, we should be vigilant. The warning stays permanently.

### Reply 17:
you're a fucking moron and have no clue what you're talking about.I never said it was illegal to post the source code, I said its illegal to use the telerik winform controls without having a license, and I said unless someone has purchased the telerik winform controls which are like $1000... then they won't be able to build it anyways. get a fucking clue what you're talking about before making dumbass unfounded warning posts. fucking moron

### Reply 18:
please add mass reboot and the version of the software someware on top or side..thank for this.. and hoping for more future to come with this

### Reply 19:
thanks for checkin it out. I'll add a mass reboot function when I get back. I'm in the middle of nowhere central Oregon and I have one bar of 2g at the very top of this ridge.

### Reply 20:
There is a monitor already available.What is different about yours than the one that has been out and works quite well?Also from a member who has been registered here for a long time.<link>

### Reply 21:
its different and works better imo.try it out and see if you like it or not. I wi<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer s1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer s2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer s3"",
    ""hardware_is_owned"": true
  }
]"
7785,"Date: 2014-06
Topic: 1 free coupons expiring
### Original post:
I have two free coupons expiring in less than a week.Pm me please if you would like one of them.so I will give two awayI have to wait another three weeks before I buy more, so they will expire for me.1 free coupons expire14-06-06 16:58:00

",[]
20149,"Date: 2015-01
Topic: The Miner Don't Working In  iMac
### Original post:
I just got a new iMac at work (I'm a PC/linux guy, but my boss is a Mac guy). It has a ATI 6970, which is one of the best video cards for bitcoin mining today. So I figure I'll download Diablo miner and set it up to run with default settings. Apparently Open CL doesn't work very well on a Mac, so I was only mining at about 1/4 the rate that the 6970 would get in a PC, but still figured it would be worth it to run it over the weekend.So I come back on Monday, and the computer is froze. I restart, and I'm getting visual artifacts on the screen, and it freezes, usually at the login screen, sometimes it logs in, only to have more video artifacts, and freezes shortly after. I'm pretty sure I fried the video card. I'm assuming that the iMac must have really bad cooling on the video card, and it overheated. Aren't there any safety features to shut down the computer if the hardware is getting dangerously hot?I load in safe mode, and delete everything related to bitcoin or the diablo miner, and call the company's tech guy complaining my New iMac is acting up, acting like I have no idea why it would do that.

### Reply 1:
A 6970 was a pretty good card back in the day, but that day was 2+ years ago. Now it's about on par with a USB Block Erupter which only consumes 2.5 Watts vs 300 to 400 watts your Mac would draw if it even worked, and a Block Erupter isn't worth mining with anymore as it draws too much power. If your doing this to goof around, know you'll never break even.

### Reply 2:
Diablo miner was one of the oldest miner's out there, so it probably didn't. That was why CGMiner was such a big deal, because it used the ADL libraries to monitor temps and would throttle or shut down the GPU when it reached the preset temps. But CGMiner doesn't support GPU's anymore since they aren't a viable mining device any longer.

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  {
    ""hardware_name"": ""USB Block Erupter"",
    ""hardware_is_owned"": false
  }
]"
23365,"Date: 2020-12
Topic: Multiple workers from single S9
### Original post:
What you want is parallel mining, it's a long story, the short version of it is ""no"".What you can do instead is download AwesomeMiner, it's free since you have only 1 miner, and then use the change pool command based on time intervals and so you can achieveSon 1 worker : 12AM to 12PMSon 2 worker : 12PM to 12AMYou can do 6 hours each or any other combination, but try to switch pools as less frequently as possible since it results in a loss of some mining rewards.

### Reply 1:
Hi All,I have bought an S9 for my sons and I to play with (more of a learning/fun activity rather than a get rich quick scheme!)Is there a way to create multiple workers that mine to their own pools from the same s9?For example?Assume the s9 runs at 14th.I want a workers that runs at 4TH for Solo Mining (ckpool)Son 1 wants his own worker that runs at 5TH on a pool of his choiceSon 2 wants his own worker that runs at 5th on a pool of his choice.I know this is counter intuitive based on getwork requests, etc but I dont want to buy 3 x S9's that are good for nothing as it is!RegardsStav

","[
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  }
]"
23231,"Date: 2020-03
Topic: S9K fan lost
### Original post:
Hi all Miners, I experienced a few miners S9K starting loosing its fan. FAN 1 to be exact.Anyone of u have the same experienced? Is only 7 months old.MM

### Reply 1:
It's a well-known issue on S9k but if it still spinning physically you can try this belowIt's worth to try to fix it by:- Remove the fan and then put or attach it back then test.- Cleaning the fan terminals use Laquer flo thinner to clean them then test it again.- Resolder terminals are also worth trying.If these three methods don't work well replacement is the final solution as suggested above.

### Reply 2:
Yeah 7 months to 2 years they all go.pick up a replacement on ebay or amazon<link> went to ebay and picked first two in the searchyou want 6000 rpm to 7500 rpm 4 pin pwmIf you get lucky maybe 8 bucks a fan I don't want to really search it out tonight. You can do it .I do not know those fan sellersIf you look harder you could save a few bucks.

### Reply 3:
How is that an S9k issue? this is more like every fan on planet earth's issue, running for months with probably little no cleaning is enough to toast any fan, it really has nothing to do with the S9k model itself, S9k is indeed the worst miner as far as the control board and hashboards are concerned, but it's a matter of luck when dealing with fans, I have some fans that spin for nearly two years at 90% without a problem, some die in a few months, you just got to blame your luck and move on, there isn't really any way around to fix those fans given their cheap prices.OP, get yourself a new fan/s as Phill said, and I would advise you to actually get an extra one because pretty soon the other one might stop working too, a spare fan and a spare PSU are really important, this is why owning a single miner is probably a bad idea, because buying a spare fan, PSU and a control board for a single miner is not the best thing to do, but if you have a few of them and keeping a single piece of spare of everything makes a lot of sense.On a side note, I am not sure if this just by chance, but I noticed that setting a fixed fan speed on those fans even at high RPMs of 90%, the fans tend to last lo<rest of post truncated>

### Reply 4:
running a fan at 70 or 75 or 80 or 85 or 90 percent static setting is far better then auto tuning a fan.100% setting is stupid as it burns up and does not cool much better then 90%auto tuning also kills them.I try to set fans to 70 and track temps if needed bump to 75. and up to 90 if needed.Antminer gear can sometimes use a lower fan even a 4000 rpm set to 90% may work depends on what miner you are using.all s9's will run with a 4700 rpm model set to 85% static.now it may be you set a really high freq and are burning up with that fan but the miner will try to run.When it checks the fans for speed to determine you have working fans it looks for the fans to get up to 4000 rpm or higher at 100% .this is a slower lower energy fan<link> gear will run on a low speed setting with this fan. I use it to make one and 2 board space heating s9'sdo not get any fan weaker than this.also have a good understanding OF WHAT YOU ARE DOING IF YOU GO THE LOWER WEAKER FAN ROUTE.ie don't think an s9 will do 3 boards at 15th with these fans.

### Reply 5:
not sure how the speed running on S9 and T9+, but these old model miner fan seems running longer than S9K.BTW, i just changed the fan. Thanks miners.

### Reply 6:
I highly doubt the quality of the fans on the S9 and T9+ are any better than those on the S9k, the latter miner is indeed the worst of all, I have created a whole topic explaining why one shouldn't be purchasing Antminer S9k.I wouldn't be surprised if the way the firmware handles the fans' speed makes them die sooner, I have not experienced that because I set static fan speed on all of them, took me a while to figure out how to do it, but not more than a few days which indeed not enough to toast them.Meanwhile, I suggest you set a fixed fan RPMs just to be on the safe side, you can follow this guide and set the % you desire for the fans, I personally use 90% most of the time, but the % you chose is up to you, if you face any issues in doing so, ask in that thread and I will happy to assist you.

### Reply 7:
If he got a real delta ball bearing fan it is better.also san ace denki ball bearing is very good.some times I got deltas on s9 miners.i once got a case of san ace or sanyo fans they were really good.but a lot of s9 gear has shit generic or counterfeit fans.

### Reply 8:
Everything comes with a price, last I checked delta fans for S9 go for above $20, which is way too much IMO, I bought a bunch of cheap fans from a Chinese supplier I paid like 3$ each, and believe it or not they were pretty good, obviously nothing like those high-end fans you suggested, but the life-span of any given miner is way too short to be worth an expensive fan IMO.The good part, however, is that most Antminer fans have almost the same size and specs, <rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""replacement fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""delta ball bearing fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""san ace denki ball bearing fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sanyo fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cheap fans from a Chinese supplier"",
    ""hardware_is_owned"": true
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]"
15653,"Date: 2015-11
Topic: Where could I find a knowledgeable mining community?
### Original post:
This board does not seem too strong, asked a fairly pertinent question in the mining board hours ago and nothing yet.

### Reply 1:
This is the best you're gonna get. There are very few other forums, and none of them are as strong as Bitcointalk. Many people here are know many things and heavily vested in Bitcoin. It is just that they aren't on 24/7 so don't expect an answer immediately.

### Reply 2:
You need to understand that this is the best place for advice or help. You just need to relax a little bit and wait for some answer.You are using 3 bad small psu to power up a big machine. Buy a real psu and you will be ok.

### Reply 3:
That's a good plan, insult the people you are expecting to provide free help.Wish I'd thought of that one.

### Reply 4:
This is the most knowledgeable bitcoin mining community on the planet. Just because you don't get free 24/7 support within microseconds on a public forum doesn't mean there aren't people who can help you, but being impatient and offensive is a great way to put off the people that might have otherwise helped you. Well done.

### Reply 5:
Hi,Sorry guys, did not want to be negative, you are right I am just not patient enough. Thanks to all, and my apologies if I insulted anyone, will try to be more careful in my wording. Regards, Louis

### Reply 6:
No problem mate! You are welcome here as anyone who is interested in mining. It might take 2-3 days before you get enough competent answers to your question, but this place is the best I think and it's worth waitng a bit.

### Reply 7:
I was thinking the same thing. That is a solid plan to get expert advice for free.

### Reply 8:
Yeah I Would like to go with your points buddy, We can't think also to compare with other community to with Bitcointalk Here we can get any kind of clarification and tips about Bitcoin and more in off topics, politics and society and many more we have to learn at here. Feel up to be in bitcointalk

### Reply 9:
People don't live on forums. Give it a DAY or two to be reasonable.

### Reply 10:
Wow that is insulting , bit like walking in to Sony store and asking where can you find a good Panasonic TV haha.I think what you need to remember the community do not live on the forum and from what I have seen when I research anything Bitcoin related it leads me straight back to this forum. So it would suggest majority of my questions, have already been answered in somebody else thread. So you just need to dig around in the search facilities and if all else fails raise a thread and be patient

","[
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  },
  {
    ""hardware_name"": ""big machine"",
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  },
  {
    ""hardware_name"": ""real psu"",
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]"
20229,"Date: 2015-02
Topic: HELP! Can't seem to get my miner to start mining!
### Original post:
I am running my AsicTube on a BE Controller.I have other miners running on my network, and they seem to be running fine.Does anyone know what would cause one miner to not start mining?This is what it shows in the stratum page..<link>

### Reply 1:
oooookay.I been using Bitminter... for quite some time... I like all my miners on Bitminter.I don't get it.. but I pulled up my old Slush account that hasn't been accessed in over a year.Used the settings from that.And then the stratum page starts mining.only thing I changed was.. USERNAME, PASS, and.. THE URL and.. THE PORT FOR THE URLwhich both slush and bitminter use 3333 as port.The Bitminter setup for stratum can be seen here:<link> I just used:URL --> <truncated> <--- is url correct format for stratum..?PORT --> 3333yet. the stratum page wouldn't show any performance to mine bitminter..I have had the asictube mining on bitminter before... so why wouldn't it start mining for bitminter now..? any ideas?and I did username_worker <--- like that setup; which should be correct.**side question.don't suppose anyone reading this uses slush?I noticed slush shows my gh/s as only 87.100while my stratum page is showing real performance of 800+ gh/s...is this <truncated> that... I think I'm speaking too soon.... it's only been maybe 5-10 minutes in typing this and having started mining on slush.... just noticed....* Average hash rate in last 60 minutes. Calculated each 5 minutes.Probably h<rest of post truncated>

### Reply 2:
asic miner tubes have 'bad' software. you can not use every pool only some work.it is possible that bitminter went back to a different set of instructions. I had a tube a while back it only worked with mmpool.org and ghash.io some pools altered their software to allow tubes to work. slush did. i guess bitminter went from bad to good to bad. kano's pool was bad then good then bad about using the tube. so i guess bitminter did the same thing.

","[
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  },
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    ""hardware_name"": ""BE Controller"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic miner tubes"",
    ""hardware_is_owned"": false
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21410,"Date: 2017-05
Topic: Antminer s7 setup guide/advice
### Original post:
Hey there,Hope you guys are doing good,I was thinking to start minning bitcoins with an antminer s7, I have got low electricity, free internet connection upto 3-4MB, A-C in the room 24-7 with other machines working to,Its profitable to start with one miner?Suggestions would be great to hear,Also suggest some better machines or better ideas, ideas would be much appreciated,Thanks,

### Reply 1:
When you say ""low electricity"" what do mean?Plug in your information and see for yourself what the costs will be and any potential profits will be with a mining calculator.<link> may want to check out a few different calculators. Some give you more/better information than others. Combined, they will give you the big picture.The speed of your internet connection is inconsequential. Mining is not internet intensive. Just need a stable internet connection.Air conditioning may not be the issue. AC will be fine to cool off the room, but you REALLY need a way to vent the heat outside of the room. That is one of the most important, IMHO.

### Reply 2:
Thanks for you opinion,I meant ""cheap electricity"" there,will work on venting the heat outside,But is it profitable to start with just one miner nowadays on these conditions?

### Reply 3:
I have no way of answering that question if you don't say what your electric cost is. That was why I asked. I don't care if you call it ""low"" or ""cheap"". What is the cost?

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11394,"Date: 2011-05
Topic: New versions of the applications published – Version 1.5/2011-05-23
### Original post:
New versions of both miners released. Get the downloads. Changes for the 2011-05-23 release:Much more flexible re-configuration wizard.Displays improved menu on start-up (after first being configured.)Option for launching miner on system logins.Miner credentials limited to defaults domain on current host only.Fixed an issue with preferences being saved as read-only (OS 10.6.5 bug).Code clean-up, and bug fixes (means less screw-ups.)I hope everyonewell, except for users on OS Leopard who will still have to waitis happy with what Im done. Feedback is always welcome!

",[]
6106,"Date: 2013-08
Topic: [COUPONS AVAIL] AsicMiner USB Block Erupters - BTC Guild Coupons Available
### Original post:
I'm currently offering 6 x .4 erupter coupons... Willing to let all 6 go for .256 erupters for 2.65 shipped directly to you from the guild = approx. .44 a piece As for trust you can check my feedback on bitmit (same username) - Do not want to harm my credit in this community over 2.65...Other members not wanting to use the .4 coupons are free to list and resell them here. As Eleuthria has kindly asked to not overwhem the Guild thread with reselling coupons.

### Reply 1:
Uh ... I'm not sure I understand this offer. The BE's are being sold outright for 0.33BTC each, plus maybe 0.06BTC for shipping in the US. No coupon needed, and near unlimited quantities. Did you perhaps mean a 0.1BTC coupon offer? A link to the other thread you mention would also be helpful.Edit: Did you mean you're selling them at 0.44BTC each, 0.25BTC each, or 0.25BTC total? Sorry, I'm not reading right tonight. If the last one, I'm interested. Let me know and we can work out shipping.

### Reply 2:
Ah, much clearer now, thanks. But I'm afraid I'll have to pass on the offer. Good luck with it!

### Reply 3:
Thanks!

### Reply 4:
Sorry, might be partly my fault as well.. I have 6 coupons for erupters from BTC Guild.. (Not Asicminer coupons) These are from the guild promotion.. .4 per erupter... Price Set by Eleuthria on BTC Guild. Not by AsicMiner..I am aware of the pricing in some of the group buys. I am willing to sell all 6 of my coupons for .25 meaning total price would be 2.65 for 6 erupters.. Approximately .44 a piece.. I am not selling erupters. I am offering up these coupons for someone who wants to order erupters from the guild for a better price than would be without the coupons. (even after the extra .25 is tacked on this deal beats the current BTC Guild price by over .05 per erupter ) After receiving .25 I will place the order and set them to be shipped to your address directly. The purchaser of the coupons will then send the 2.4 payment to the guild confirming the order.

","[
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21453,"Date: 2017-06
Topic: BEST WALLET TO MINE DIRECTLY TO please kindly assist in choice
### Original post:
Hi All,This hasn't really been explored in depth from what I can see after spending the last few hours sifting through many posts in various sections of this great forum. Needless to say I spend 99% of my time reading and 1% posting - so I thank everyone in advance for their contribution to what I feel is a much needed topic of discussion.I would like to please get some comments/dialogue on the following queries:1. What is the 'best' wallet to mine directly to? I'm talking about an address that doesn't change that you can point your workers to or get pool payouts sent to **Loaded question with no definitive answer I know but there are so freaking many it's insane to have to choose from all of them there must at least be a top ten list somewhere that has been thoroughly thought out and explored from every angle**. So for a top ten list I'd like to explore hardware based, app based, desktop based, online hot wallets, exchanges, just leaving the coins in the pool itself for a long period of time, others?2. The highest level of security and most stable/long lived wallet to mine to? Two factor authentication, seeds, backing up private key to an encrypted text file, cold storage detached<rest of post truncated>

### Reply 1:
The wallet you chose isn't related to mining. In other words, the fact that you're mining or not shouldn't affect the wallet you chose.Unless you don't mine with a pool and need to run a full node, which I don't recommend to a beginner.Choosing a wallet is a lot about your needs and how you plan to move your funds after you mine them.It's usually a balance between security and ease of use.

### Reply 2:
This is a good answer - thank you for this :-)I like jaxx but saw the following: Can I point my mining rig payouts to Jaxx?Decentral Jaxx Knowledge Base FAQNo, Jaxx is a lightweight wallet that is not designed to receive mining payouts. We do not recommend pointing any mining rig payouts to Jaxx as it may cause issues on your end as well as potentially causing issues on our end. One transaction sent from your pool is actually composed of several <truncated> that may cause complications.If you click on the transaction ID of one of your payouts, you'll see that there's several inputs as well as outputs so it's not a simple send / receive transaction that Jaxx is designed for. Please redirect your mining payouts as soon as possible and wait for a new update to rectify this issue.and<link> Developers say they are Very Comfortable with how their Wallet works, regardless of this Security Flaw""Unauthorized access to your Device Allows Hackers to retrieve your 12-word backup phrase, Vx Labs continued, they can easily recover your wallet and steal your moneyWith the 12 word backup phrase, they can later restore your wallet, including all of your private keys, on their own computers, and the<rest of post truncated>

### Reply 3:
Yes I would stay away from any wallet that's online.You want something where only you control the private keys.Here's a list of wallets that have stood the test of time and that I have used myself.Light: Electrum, MultibitFull node: Bitcoin Core, Armory

### Reply 4:
Thank you unholycactus I will check out multibit it's a new one I am not familiar with - I am aware of the others and currently investigating Thank you again for your response I really appreciate your input :-)Have a nice day! Good karma to you!-jd

### Reply 5:
If you have at least 300 GB free in your hard disk I would suggest you to download the Bitcoin core wallet. I say 300 GB so you can be ready even for next year when the size of the blockchain will grow more than it is actually at about 150 GB. It is one of the most secure wallets which is free. It takes time to download and sync but once it is done it is worth every minute you spent syncing it.

### Reply 6:
Done. Revamping my setup to allow for the extra space and the backup of that space. Appreciate the comment re:What will happen to coins in the bitcoin core wallet after August 1st? Your time and help is duly noted and very much appreciated. Good karma to you All the very best and kindest regards,-jd

### Reply 7:
Coins in the bitcoin core wallet will remains same, only potential change regards value; however, actual coin quantity remains unchanged.

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10519,"Date: 2017-09
Topic: Please provide suggestion on how to save on PDU's and Racks...Thanks.
### Original post:
Hi Everyone,Please provide suggestion on how to save on PDU's and Racks...Please provide links and model numbers of reliable equipment you have bought? Thank you.

### Reply 1:
I posted some eBay links.The other day.If you are in the USA let me know.I will post them for you

### Reply 2:
Hello Philipma, yes please post the links. Thank you for the help.

### Reply 3:
good pdu<link> rack<link> psus do you have?The pdu is for 220-240 volt.Do you have a 220-240 volt circuit ?That pdu has a l6-30p plug it can do about 5200 watts safelyYou can run a lot of gpu rigs on it.

### Reply 4:
For racks, just use normal wire-frame racks available from Home Depot etc. like these which are 20"" wide Very old pic - those were s1's...

### Reply 5:
Thank you...I will be using the PSUS for Antminers provided by Bitmain. So this should be good for those? I am planning to run 128 of them in total.

### Reply 6:
Thank you. I like the mesh ones but the thing with those is I am not sure how to create a hot and cold isle with that. Since the racks are a little fragile there is no place to put the drywall to contain the heat. Do you make containment aisles in your new ones?P.S. What's that thing from Tripplite?

### Reply 7:
The racks are far from fragile. Big or small they are quite sturdy. As see in the pic each shelf has a lip perfect for attaching things to including drywall if desired.Those were 1kW stand-by UPS's. The old S1's only drew about 450w and at the time power at home in my area blipped off-on at least 1 once a month so it was practical to use them. Now days with miner power needs over 1kw I would not advise using UPS's unless absolutely needed. Just too expensive.

### Reply 8:
okay 128 x 1500 = 192,000 wattsyou can just about do 4 units per pdu.You need bigger pdu's then the ones I gave you.There are some 50 amp pdus aroundmore costly but they should do 9 s-9's<link>

### Reply 9:
Thank you...So if I just use the ones with the 4 it will be much cheaper. I will be able to use 2 of those to plug 8 units for just 80 bucks where as this 50 amp one costs 299 dollars and will house just 9 units...I think that would be okay, right?

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    ""hardware_name"": ""PSUs"",
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    ""hardware_name"": ""Wire-frame racks"",
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    ""hardware_name"": ""Antminers"",
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21625,"Date: 2017-10
Topic: Heat & Where to Stick It...
### Original post:
It's looking like the initial set-up I'll be going for is 2x Avalon 741 & 1x Antminer L3+. It's not a major set-up or anything, but it's going to generate a sufficient amount of heat. To make it worse, I'm located in Louisiana... 100+ F temps in the summer with A LOT of humidity. I'd appreciate your suggestions on how to manage the heat and airflow. I'll be installing a 220V line for whatever space in which the miners end up unless you guys feel that is unnecessary. Noise is a concern (wife and 4 kids), but I'm not opposed to installing sound insulation if necessary. I'm an engineer and am not afraid of doing any of the work myself (except for any electrical). Options: House is large, has AC, and has room to store the miners within a closet or within an enclosure in the utility room. Note: Utility RM shares boundary with garage and is immediately adjacent to breaker panel (opposite side of wall). It also has access to the existing dryer vent, which goes directly outside of the house. Possibly a very bad idea given the high fire-risk of dryer lint.I have an attic with a lot of available space to set up the miners. Note: likely not an option due to how hot the ambient temperature in <rest of post truncated>

### Reply 1:
tired now and doing a setup on a ryzen 1800xbut the attic may work .how much head room in it?does it have a spot to put in a gable fan ?I have a barn install for a solar array that would work if you could copy what I did.I will look for link<link> of heat wind tunnel <link> have more photos I will post later

### Reply 2:
I was checking through your photos, and was wondering, are your exhaust fans constantly running, or do you have them set on a temperature switch for on/off operation. I'm looking into different designs for next spring and didn't want to forget to ask? At the moment I am looking into the best way to rig my avalon exhaust to my furnace return air intake in the basement. My plan is to widen my return air intake in the basement and mount my miners within a few feet, and restrict the main air intakes on my main level by half or so. I might just have to run a few feet of ducting wide enough to accommodate the airflow to within a foot of the miner exhaust. I figure by running my furnace fan constantly instead of on/off with the thermostat, I can keep a steadier heat in the house and that will be the most efficient use of the miner heat. The 4 miner set up will equal about 20% of my furnace at full capacity, so with steady fan circulation this will greatly offset my power consumption costs, as I'm going to need it anyways.Winter is coming.

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    ""hardware_name"": ""Antminer L3+"",
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18299,"Date: 2013-11
Topic: How to link some 7950
### Original post:
Hi, i want to start mining, i have the money, to buy 10 7950, i want them, i like them, anyway, what else do i need? How can i link them to my computer? And how to check them?

### Reply 1:
Power supplies, motherboards, CPUs, RAM modules, cooling and other misc stuff. All this is not so cheap, think again is it worth mining at all or just it better to buy coins instead!

### Reply 2:
Can you give me more details please?

### Reply 3:
Ok here are the basic info7950 need to be installed in a computer, they are not stand alone devicesSecond you will not be mining Bitcoins with them, you will be mining alt - coins that you can sell for bitcoins.You will have to install the mining software and keep an eye of it to make sure it's still running

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    ""hardware_name"": ""Power supplies"",
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    ""hardware_name"": ""motherboards"",
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    ""hardware_name"": ""CPUs"",
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10895,"Date: 2020-06
Topic: Special thread concerning bitmains coupons refunds discounts. June 2020 update
### Original post:
Note this is about June 2020 bitmain delays<link> : due to the current issues with bitmain deliveries I am unlocking this thread. Maybe it will help people with the June 2020 delays.I have permission to do the thread here vs service discussion.Bitmain has created a complex set of rules for credit,coupons and refunds.Many of us don't know or understand how to get proper refunds ,discounts ,credits.so i will try to run a thread covering these issues.i will self mod.i will allow comments you can post screen shots of redacted orders emails etc.

### Reply 1:
I got permission for this thread to help each other deal with bitmain coupon refund and credit issues.I did not delete people trying to buy or sell a coupon.But I just deleted the three quoted posts. Lets cooperate rather then argue.I am sending a 41 coupon to favebook for free once bitmain website is back up.Website is up I sent a 41 coupon to favebook. free of charge.Bitmain has squared up for me.Maybe I will use the last 140 coupon next week.Going to lock this now. As most are settled and square with bitmain.I am going to hold my 140 10 % coupon as I may buy something and I still have the crazy person that tells me I am a crook and did not give him a coupon after he paid me for it. He never replied to me and has never sent any proof of paying for that coupon. But i will hold it a bit longer. Since he may show me some money sent.He actually sent me a threatening pm over this, but that has no point being here.

### Reply 2:
Due to the June 2020 shipping delays I have reopened this thread.This refers to the June delays<link> may give discount and refund and coupons due to the June 2020 <truncated> then if you suffered delays ask for1) a partial btc refund due to the delay2) a credit towards a new unitlast choice below:3) a coupon for a future purchaseAsk for 1) first and follow up polite, professional, persistent please mention this thread.

### Reply 3:
It appears they have sent me compensation automatically for my delayed T17+ units, as I received just under 1500 usd of coupons today and they are named 'T17 coupons' - unless it is standard to receive these after every order is shipped?

### Reply 4:
No that was to make up for their screw up.Coupons vary in quality. Some are 10% some are 20 % some are 30 %So if you do an order for 1000 and have a 300 dollar 10% coupon you get to use 100 of the coupon. and the order becomes 900a 1000 order with a 300 dollar 20% coupon you get to use 200 of the coupon and the order becomes 800a 1000 order with a 300 dollar 30% coupon you get to use 300 of the coupon and the order becomes 700So 30% coupons have more value then 10% coupons.Of course if you don't need the coupons they can be given for free to other people or you can try to sell them aftermarket .The sales section for bitmain coupons would be digital goods.<link> is an older offer to buy coupons<link> is an old offer to sell some<link> anyone now waiting on a bitmain order this post may help you get some compensation coupons.

### Reply 5:
It's a 10% coupon. To be honest that's not particularly good compensation, as it's really only any use if I intend to make another big order (15,000usd upwards).

### Reply 6:
well you could buy 2 x 2500 = 5000 s19pro gives you five hundred off. rest would be lost.which is not a lot. but it would be something.

","[
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6818,"Date: 2013-12
Topic: MiningHeart.com is new service for miner selection.
### Original post:
Hi, Introducing MiningHeart.com, a new service in the BTC mining industry.Our website will help you select and purchase best miners available on the marketall in one place.We offer you a convenient interface for selecting, comparing and purchasing miners of various vendors.Multiple filters will simplify and optimize your selection process, while the Revenue Calculator will display your prospective income.In near future, we plan to win additional discounts from mining hardware vendors and to launch the scammer screening service.Find all you need in just one place. MiningHeart.com.Any comments and ideas for site evolutions are welcome!

### Reply 1:
The only thing I see here are a bunch of miners that don't exist and are basically verified scams you have for sale... Not cool

### Reply 2:
You can check this out by contacting the companies that these guys claim to represent and ask them if they are authorised resellers.

### Reply 3:
Payonix is a confirmed scam, please remove them from your site as an ASIC vendor. For more information see <link>

### Reply 4:
Thanks a lot for such infos.We've added caution remark in every product Overview tap of this vendor.<link> remove products out of our website later, if consumers from that thread will not get orders till promised date.

### Reply 5:
it is a confirmed scam. Why would you wait until someone is scammed before removing? That thinking makes little sense.Regards,Brian

### Reply 6:
You're not going to remove a listing until AFTER people have lost thousands/millions of dollars?! How dare you! You aren't offering a service. You are perpetuating a fraud! And that's unethical and, not to mention, illegal in most countries.How about you do your own due diligence and investigate the companies you list? Hell, you don't even need to do that... Just spend 5 minutes reading a few threads in this subforum and then remove the obvious scams. Better yet, if a company does not have an official announcement thread in this forum, simply assume they are a scam and refuse to list them. This community does a spectacular job of vetting these companies so the fraudsters have learned the hard way that it's better just to avoid this place altogether.

### Reply 7:
I emailed KnC about these guys:This was the response from KnC:

### Reply 8:
xtreme is considered a scam

### Reply 9:
any proof? like payonix above.

### Reply 10:
Biffa,Can you share KnCMiner contacts via PM?We were trying to contact them many times, but no success. Now answers at e-mails, private message here. Total ignoring =(.You can ask about our requests. I used my name George Wader.Thanks.

### Reply 11:
look it up on this forumand then fuck off

### Reply 12:
lol, great introduction.Do some research yourself before adding 'companies' to your slick website.You made it to my scammer list. Cheers.

### Reply 13:
...why do list KnC on your website, if you haven't talked to them yet? Does that mean your other ""signed agreements with some of the most relevant mining hardware vendors"" are also <truncated> us to provide proof that a company you're advertising is a scam doesn't sound like you are ""superb in defending our buyers' interests"".Sorry dude; you screwed up. I don't think you're going to get any traction here, without a lot of damage control.

### Reply 14:
Unfortunately they don't need to, they will get loads of suckers in the public to part with their cash, and they will only come on here afterwards and find out they got scammed.

### Reply 15:
Xtreme Miners is considered a scam, see <link>

### Reply 16:
I've sent a request to lock the thread. What's more to say. The guy is not credible and has many scam companies listed. He's not affiliated with any companies. I say lock it up, boys

### Reply 17:
Miningfart FAQQ. What is MiningHeart.com?A. MiningHeart.com is a worldwide dealer of Bitcoin mining hardware and services.Q. What does MiningHeart.com offer?A. Our company gathers almost all relevant offers on the market for Bitcoin miners and helps you make the right choice easily and quickly.Q. I know which miner exactly I want to buy. How can MiningHeart.com help me?A. Owing to our agreements with all major miner vendors, MiningHeart.com can provide you with an extra discount for the exact miner you are looking for.Q. Are there any other advantages to buying Bitcoin miners via MiningHeart.com?A. Yes. MiningHeart.com accepts most payment methods. Even if the vendor of the miner in question does not accept some of them, you can place your order and then pay using the method most convenient for you via MiningHeart.com.Q. How can MiningHeart.com guarantee that my miners will be delivered safe and sound?A. MiningHeart.com is a company that specializes in helping clients select the right miner and save extra money on discounts. All your orders and payments are forwarded directly to the vendor. As soon as they receive it, your miner<rest of thread truncated>
",[]
15541,"Date: 2015-06
Topic: How do small Farms of antminer s5's control all of them?
### Original post:
how do they manage them? for example if i had 30 S5's. thats obviously not enough to solo mine. so how do you update the pools and settings on all of them at once? i dont have 30. i was justing using that number as an example.

### Reply 1:
that are numerous software for that, like cgwatcher, bat there are better option with gui that are web based(miniera i think), i don't remember the name right now

### Reply 2:
While I expect it's valuable in terms of effort, I don't see why it would be absolutely critical to get everything changed at once on N miners. What happens if you do N/2 in the afternoon, and N/2 the next morning? I can't imagine the pools would care, nor would the S5 miners. If I had N (N>1) miners I would clearly consider spreading their hash rate across multiple pools. And I certainly wouldn't lose any sleep over the fact they might have different settings. They are all running at different speeds anyway, and using different amounts of power at some level.

### Reply 3:
You could use a configuration management tool like puppet or cfengine.

### Reply 4:
With Minera you can monitor and configure pools for every network mining devices including S5.<link> wiki page: <link>

### Reply 5:
I have about 10 to 12 different miners a few antminers a few gridseed couple gpus and some zeus miners I use minera and multiminer both have mobileminer available for download for just about and device ios, android,windows phone and if you dont have your phone with u just jump on the web mobileminer dashboard I've been using multiminer since I starting mining Nate is awesome always got a new update or something to add if u need support he's wright there to help check it out

### Reply 6:
I use MiningRigRentals for managing pools, of all things. You don't have to use their services, but I can simply point all my miners to their proxy servers once when I first set them up, and then in my account I can manage several different pool configs and groupings easily. Plus, if you decide you want to put your miners up for rent it's easy too. For example say i have about 30 miners. I have 6 different groups of them, each one has 5 miners in the group. I have 6 different mining profiles with different pools and priorities, each one assigned to a group. I set a price for renting them, and if price goes above, it switches to renting, otherwise it mines at the pools I've configured. Switching pools is a few clicks in their web interface.I used to do it by custom written Linux scripts, but this method is so much easier. On top of that I use M's MinerMonitor (you can find it under the mining software us forum) to monitor all of them for their performance, temps, etc.

### Reply 7:
That's also a good way I have my antminer pointed to miningrigrentals and switching pools is a few clicks and if u can get on the Web u can change your pools

### Reply 8:
There are multiple as mentioned. All have their pro's and con's. I would give Minera a shot as it will run on a raspberry pi -<link> using a raspberry pi you will save electricity compared to a full size pc running 24x7.And MiningRigRentals has some intresting options. I personally don't use it but if you had a miner in a data cener you can't change pool easy setting it to MiningRigRentals will allow you to change pools. And the better way is probley setting up a proxy which I think the amazon free EC2 should be able to do fine.

### Reply 9:
As others have mentioned, Minera is pretty great. There is an ARM image so it is easily flashed to an SD card for a Pi. The statistics are detailed as well. It really allows you to see which miners are underperforming and need to be tweaked. And it automatically attempts to recover miners that go down. It's a time saver so you don't have to go rebooting miners all day.

### Reply 10:
Can you control them(network miners - specificly antminer S5's) from minera? or is it just monitoring?

### Reply 11:
I set up Minera yesterday in hoping I could swap pools etc but had no luck myself. It does do monitoring but that's all I see on a local network. I even tried to swap to my reserve pool on the S3 and it would not even do that. I ended up setting up an account at a mining rental place and pointed my miners there in groups of 5. So far it has been great and I have not noticed any decrease in hash rate.

### Reply 12:
I have a small farm, 15 boxes total (sp20s, s4+, s5s) and I use an expect script to change the cgminer.conf when I'm doing bulk changes.I'm looking to expand out another 40 s5s, but I've been holding off hoping for new tech chips.

### Reply 13:
Hey ! I'm fairly new to bitcoin mining, but Im trying 2 softwares right now. 1- Multiminer: The interface is discreet and precise + mobile miner app has the option of reviewing remotely miner info (temp, hashrate) and the best is the option of rebooting remotely through the app.2- Cryptoglance: The interf<rest of thread truncated>
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    ""hardware_name"": ""antminers"",
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    ""hardware_name"": ""gridseed"",
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    ""hardware_name"": ""gpus"",
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    ""hardware_name"": ""zeus miners"",
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16929,"Date: 2011-09
Topic: Can only boot with 2 cards.
### Original post:
Sorry that I'm reposting this from the newbies section, but I think I would get much better help here.First of all here is some information that should help. I am currently running windows 7 premium 64 bit. The motherboard is a MSI 880G-E45, and I have used it to run 3 5830's in the past when running win XP 32 bit. The PCI-e slots are arranged as follows: 16x(runs at 1x because I tried using tape to force it to 1x), 1x (covered by 1st card), 1x(PCIe x1 extender attached to this), 1x(back cut out to allow 2nd card to be inserted onto mobo). The only real difference between this setup and when it was running XP is that when it was running XP the first 3 PCIe slots were all occupied by pciex1 extenders, leaving the 4th slot empty, but now the first, third, and fourth slot are occupied. When I try to boot up with a card attached to the 3rd slot via extender cable, the computer freezes at the windows boot screen, restarts, and then the bios says that a Hyper Transport Sync Flood Error has occurred. I don't know if it makes any difference, but the PCIEx16 slot is a 2.0 slot and I assume the x1 slots are all PCIE 1.0 because they are not listed as 2.0 in GPU-z, like the 16x slot is.What w<rest of post truncated>

### Reply 1:
What PSU do you have? Have you checked the pins on your extender cables and on the mobo connectors?

### Reply 2:
Its an antec earthwatts 750W. It has had no problem powering 3 cards in the past so that is not the problem. I haven't had time to test the extender cable I'm using for the card in the 3rd slot, but I am going to test that now.

### Reply 3:
AH yep it was a faulty PCIe extender. Thanks for that suggestion.

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4392,"Date: 2013-02
Topic: Avalon ASIC owners...
### Original post:
Anyone with an Avalon ASIC unit would you be willing to let us know what your daily return is right now? Approximate if any.

### Reply 1:
try this thread:<link> <link> <link> any of the dozen Avalon threads here. But...It's probably around 9 BTC (maybe a little less) per day before power costs at this moment.

### Reply 2:
Hi,It's around 8.2648 BTC(as per bitcoinx.com) per day as per the difficulty level 3,651,012.00, when they mine their own. if they use any pooled mining then less minimum 3% fee.it will be changed in next few days. b'coz the difficulty level will be changed to 4,281,991.00(in next 665 blocks solved as per bitcoinwatch.com) then it goes to 7.0469 BTC per day. now the blocks has been solved approximately 8.21 per hour. this will be solved with in next 80 hours(approx). which means approximately happen in 4 days from this time.then the earning will be goes to 7.0469 BTC(as per bitcoinx.com) per day.Hope my answer will compromise <truncated> Sorry for my English. I'm not a Native English speaker. If you found any mistakes on words or sentence, please forgive me and try to understand the meanings. if you found anything wrong please correct it.

### Reply 3:
Thanks guys very much. I really didn't know there were other topics out there since they just came out. My bad, sorry about that. I'll take those numbers, pretty good in my book. Are the avalons really hard to setup? Don't they come with software or anything, drivers for Windows or anything like that or they just go through your USB port?

### Reply 4:
Pretty good? That's like saying winning the lottery makes one able to live a comfortable life.Don't forget, the bitcoin proceeds are relative to one thing ... the difficulty at every point in time that it is mining. If total hashing capacity of the network doubles, the number of bitcoins received when mining with any hardware (e.g., Avalon ASIC) will drop in half.

","[
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14126,"Date: 2011-06
Topic: Multiple cards with PCI-E-x1 - newbie question
### Original post:
Befor I start to destroy my old MOBO I wanted to ask - will 2 cards work on MOBO, which chipset (P31) doesnt support crossfire/SLI. I'm not going to crossfire my radeons, but just wondering, if it will work.PS. Any advices how to safely cut back of slot?

### Reply 1:
Cutting a slot and running a GPU @1x would not be advisable! Now cutting a 4x slot would be a slightly different story. Just get a new MoBo with 2 PCI-e x16 slots.

### Reply 2:
look for cablesaurus in the selling thread. He's got a variety of custom cables to meet your needs.

### Reply 3:
Nonsense, a PCI-E x1 slot will be ample for what us miners require. Cutting the actual mobo might be tricky, but if you're careful it should be fine. I wouldn't recommend cutting the actual mobo, but as it's old and you seem keen I don't see the harm in it.For some advice on how to cut the extender check out this guys blog:<link> isn't needed for mining and is slower in most cases, you'll have to run a miner for each GPU.

### Reply 4:
I know crossfire isnt best way to mine, but my actual question is if mobo can support both cards. @ buying MOBO - additional costs... I'm just trying to use hardware I already have.@ cables - Im from europe - shipping cost and time are unacceptable

### Reply 5:
yes, pci-e x1 is pretty much the same as pci-e x16oh, you can get x1 extenders for less than $5 shipped on ebay. although you'll have to cut it yourself. not hard.

### Reply 6:
two cards don't mean crossfire

### Reply 7:
Semi-relevant thread hijack:What's the voltage that the PCI-E x1 can give? Is it possible to run a dual GPU card through a PCI-E x1 extender, a 5970 for example.

### Reply 8:
+12v i think

### Reply 9:
Better to get a modified extender cable with a molex for dual GPU cards

### Reply 10:
These cards will be powered by separate PCIe power connectors anyway, so it does not make a difference. PCIe itself provides 75 W of power.I have a HD5570 running with one of these 1x extenders, it consumes about 40 W via the PCIe and has been doing fine for a couple of months.

### Reply 11:
Just done moding. And:ITS WORKING, even when second card doesnt have enough space on mobo (bios battery). BTW, can I remove that battery?

### Reply 12:
Yes, but you will need to set your clock every time that you unplug your desktop from the wall. Some bios also require that you ""load defaults"" if the cmos was erased.

### Reply 13:
I have to load default anyway cuz I think battery died few weks ago, just didnt know it there should be something to clost circuit. Thanks for your help.

","[
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    ""hardware_name"": ""Radeons"",
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    ""hardware_name"": ""PCI-e x16 slots"",
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    ""hardware_name"": ""HD5570"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Bios battery"",
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7380,"Date: 2014-04
Topic:  [ANN] Technobit 60 Ghs HEX16B(Bitfury v.2 based) 16 chip board design - 189 EUR
### Original post:
Wow, Martin you are damn good at getting out new boards extremely quickly. I can't wait to get my hands on some.

### Reply 1:
Nice, any pictures yet?

### Reply 2:
Shipment 8-th of April

### Reply 3:
How much international shipping and handling in Europe?Thanks W_M

### Reply 4:
35 for EU

### Reply 5:
Technobit are in the EU, Wolf_Miner, so no import duty or any of that nonsense.

### Reply 6:
It looks exactly like a Hex16B I suspect. Same 55nm chip package just 25% more hash on Bitfury v2. Pictures of old Hex16B here: <link>

### Reply 7:
Chips available and already ordered.Production started

### Reply 8:
Are you going to offer assembly service for the rev.2 chips? I have some that need a good home.

### Reply 9:
Marto, is that 189euro board and chips assembled?

### Reply 10:
As it says on the web page..""Full assembled miner including PCB, 16 Bitfury chips, all components, assembly and testing, hestsink and fan.""

### Reply 11:
Same question here...

### Reply 12:
After all the mad posting here from people ordered assembly service by mistake and then bashing us trough forums with BIG red lettersWE decided to make assembly service only by personal arrangment

### Reply 13:
That means i have to bring the chips personally? Or we can arrange something by PM?

### Reply 14:
PM will work

### Reply 15:
Im confused. So when you buy this, is it plug and play or there must be further asembly? The information I've gathered here contradicts what is on the website.

### Reply 16:
You need a PC Power Supply to power it, last ones were sent out with Molex connectors on, but previous ones have had cable screws for the black/yellow cables. You need a PC to run cgminer (linux) or hexminer (windows) on, but it's recommended to use the TP-Link TL-3020 router as a 2Watt Linux PC, there is firmware on their web site that installs everything you need.

### Reply 17:
Assembly service for hex16b 60 GHs with Bitfury rev.2 is available in our site now.The change now is that you have to provide tracking info for your chips with the order.<link>

### Reply 18:
Thank you! They'll be on the way tomorrow! Please send me a pm with the address and a generic phone so I can overnight them to you, thanks.

### Reply 19:
BitcoinValet has a BF 2 chip Group Buy. I bought from his first group and am definitely getting in on this one as well. The 16 chips I have aren't enough to satisfy my need for speed. I'll need more chips for that.<link>

### Reply 20:
Got 16 chips coming today, and another 48 will soon follow.If anyone else is looking for smaller quantities of chips, then you should check out BitcoinValet's group buy.

### Reply 21:
Hello Marto,can you write more technical Details when you tested a unit well?How many voltage i must give to the Chips like this for the hexa2:1000/0900mV ~24W - 15.86GH/s - 1.51W/GH (less than 1% HW)1300/1020mV ~56W - 20.30GH/s - 2.76W/GH (less than 2% HW)1500/1120mV ~92W - 22.85GH/s - 4.03W/GH (less than 2% HW)1600/1160mV ~108W - 24.15GH/s - 4.47W/GH (less than 3% HW) - hotThis i Need to run with cgminer.Standard is the 2pol Connection to the board right?Thank you!

### Reply 22:
Martin,We good, you always deliver! Can't wait to get my rev 2 miner. Too bad I sent the chips through the slow post office, do ooh.

### Reply 23:
0.3.0 Milestone release <link> GET WORK cgminer support is depreciated. !!!USE STRATUM ONLY!!!!* cgminer patch to cgminer 4.2.1 rev <truncated> cgminer bug fixes: thread locking, memleaks, stage work buffer length adjustments and many more. All hex drivers were rewritten * cgminer the most stable release! We encourage all to upgrade!* openwrt updated to r40295

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502,"Date: 2013-06
Topic: AyHo.es Shares for the purchase of a Bitcoin Mining 2.8 TH / S
### Original post:
Hello,we have created the following website Ayho.es to create a bitcoin miners farm 2.8 TH / s with ASIC chips.On the website you can buy shares from this farm. Here you can see the prices <link> Every year or earlier. It will double the power of the farm (no added cost, free), the idea is to reach 28 TH / s. After reaching that power would attempt to invest in the DESIGN and MANUFACTURE own chip to add more speed, thus avoiding the dependence on other companies that take months to send you orders, if at sometime. All this process will be completely free, without any cost to the shareholder and completely transparent.- Income payments will be made when a certain threshold (selected by the shareholder) is exceeded. These earnings will be deducted the cost of electricity and internet, plus a 2% for maintenance costs.- The mining would be operational around late November early December.- He put a phone number once started mining to resolve any questions or problems. Also may address any issues or concerns through this page <link> Any issues or concerns will be solved through this page <link> The machines will be hosted in Madrid, any shareholder may come to see them. It also put a web<rest of post truncated>

### Reply 1:
another one to my scammer listAt one point i might just use white list instead.

### Reply 2:
Sorry about my English I am not native English. This is not the same as cloudhash.com, cloudhash rent computing power for two years, this is for life. In addition we increase computational power farm once a year for free.And yes, we have already made a small order of chips.I'm sorry you think so, I have invested much time and money on this project and is not to scam.

### Reply 3:
Clarified my initial impression. See edit. I am willing to help OP if requested as to clarify project aim, pricing, ownership structure, miner build time and plans.

### Reply 4:
So, same thing as cloudhash.com. . . Wow. . Have you even ordered chips or miners yet? And what is the non consistent and poorly worded language around share value and Gh/s.. Seriously, you have to be kidding right?Edit: OP contacted me and informed me that it is a Spanish project, hence the grammatical issues etc. I have offered to help re-write and clarify the proposal. I take NO sides in the validity of the project and am not affiliated with the owners, but will help clarify terms and information if OP wishes.

### Reply 5:
Hi to all.It is Spanglish , what it is a good idea. No, it's not scam, because if the Project not start, he return the BTC. Do you know some similar to it? He buy Avalon chip in the Spanish forum (first and second Bath 10.000 Avalon chips) and the miner will be mount in Barcelona in September or October. An the other hand, the price of the hash is most different of cloudhash or hashrack. Could you read the FAQ, please?.And sorry for my English too.Saludos (Regards)Antuam

","[
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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Avalon chip"",
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  }
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22639,"Date: 2018-06
Topic: Temp PCB or Temp Chips? Btc.com Tools vs Awesome Miner
### Original post:
Hi GuysIm looking at a software from mining monitoring, i want something that gives me reports in CSV files so i can compare de temps of my asics from time to time to make a full historic data.BTC.com tools give me that report for free, but they have the temps of the PCB only and not the chips.Awesome Miner have this function too, and they show the Chip temps.The question is, what temperatures really matter and what is the difference? They change in the same way (now on my farm the difference is at 10C between PCB and Chips)?If PCB temps are ok to monitor, i dont have to pay for awesome.

### Reply 1:
Monitoring the pcb temps could work if you keep in mind that the chip temps can get considerably higher.If you write a simple batch / bash script you can check the stats and generate a csv yourself, I have done it with all 6 temps.

### Reply 2:
Do you mind to share that batch?I dont have programmer skills

### Reply 3:
I think it couldn't give you a good temp result or estimation how hot you're every chip is.@OP if you have more than 2 miners I think it is good if you use the awesome miner when you wanted to monitor the temps of every PCB chips it gives you accurate temps.I think there is a free version of awesome miner but limited to 2 miners.

### Reply 4:
Sure thing. If you want the batch version I would split it up into two scripts, one to get the info and one to compile to csv. Make a new folder, where you will put everything into. First put a list called miners.txt that looks something like this:Code:A1 - 192.168.1.3A2 - 192.168.1.7A3 - 192.168.1.5A4 - 192.168.1.6B1 - 192.168.2.3B2 - 192.168.2.4and so on... Location can be anything you want, even just 1 2 3 etc. Just make sure it is like (location) - (IP) on each line, nothing blank or different format.In this folder you also need a powershell script. Make one and call it clearNull.ps1, with this <truncated> "".\_\"" | ForEach { (Get-Content $($_.fullname)) -replace ""`0"", """" | Set-Content $($_.fullname) -NoNewline }Now make a .bat file for multithreading. Make one and call it _T.bat with the below source. You will need ncat on your system or just download ncat.exe from online and drop it in the folder.Code:@echo offecho Antminer S9 Information Gathering Threadecho.setlocal enableextensions <truncated> /f %%a in ('copy /Z ""%~dpf0"" nul') do set ""CR=%%a""for /F ""tokens=*"" %%A in (_%1.tim) do ( for /f ""tokens=1,3"" %%a in (""%%A"") do ( set ""tx=%%a"" <nul set /p ""=Processing miner on %%b ..<rest of post truncated>

### Reply 5:
The problem is probably with netcat like you mentioned. The step 5 issue is just a result of not having any text files in the folder.The version of netcat that you downloaded relies on external library files. I would use one that is statically compiled specifically for Windows. e.g. <link> Sorry for the confusion, I should have linked to this one specifically. If you still have issues with this ncat.exe let me know.Also you should copy and paste what you have in miners.txt so I can see if you are using the proper format.

### Reply 6:
Nice man, but im having some issues to runI download the netcat from this link <link> and put in the same folderThe ""exe"" file on the rar have the name of nc.exe, so I edited the _T from ""netcat"" to ""nc""When i run, on step 3 the CMD opens another window with ""the system cannot find the path especified"", i think theres a problem with netcat (already give permissions on my antivirus).On step 5 im having this <truncated> : Cannot find path 'G:\Mining Control\_\' because it does not exist.At G:\Mining <truncated> char:1+ Get-ChildItem "".\_\"" | ForEach { (Get-Content $($_.fullname)) -replac ...+ <truncated> + CategoryInfo : ObjectNotFound: (G:\Mining Control\_\:String) [Get-ChildItem], <truncated> + <truncated> : <truncated>

### Reply 7:
Ok, downloaded ncat and put in the same folderMy miners.txt is like thisCode:A1 - 192.168.1.178A2 - 192.168.1.138A3 - 192.168.1.10A4 - 192.168.1.30When i run the search.bat the system stops on step 3, open a new cmd window with thisCode:Antminer S9 Information Gathering ThreadThe system cannot find the path specified.G:\Mining Control\Teste>And have the same error on step 5 that i said beforeThen I tried to execute the search bat on admin priviledges, the error is in the img above with the name of the folders<link>

### Reply 8:
The miners.txt format is good, you can make the ""location"" any unique text you want by the way.I sat here staring at it for like 10 minutes until I realized it might be because your folder has a space in it. You should try removing the space from the folder. Also in the folder you have you should make another folder called _ (just one underscore) to hold all the text file results. I didn't mention that before because I thought the program made that folder automatically but I guess not.Let me know if it works and if not idk, I will reduce it to a non-multithreaded<rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  }
]"
18552,"Date: 2014-01
Topic: DOES ANYONE KNOW HOW TO GET A BI FURY 5GHZ/S USB MINER TO WORK WITH CGMINER 3.70
### Original post:
Have you downloaded the drivers?<link> those with the new USB device. should you after that installation not ""see"" your device (can happen with win7), don't worry.Fire up cgminer, should work.If you want to run CG miner for your graphics card as well, make a copy of the CGMiner folder simply.Use one for GPU, one for USB stick. when us start the USB stick version, use the no-gpu.exe version (for V3.7).Hope this helps, I am kind of new to all this myselfPS: please don't type in all CAPS, it is pretty exhausting on the eyes.

### Reply 1:
Just run a second CGMiner version 3.8 or above, that should do the trick.

### Reply 2:
First, please don't write in all caps. That is usually treated as an aggressive intention.On the other hand, ASICs cannot mine scrypt. They are designed for bitcoin, which uses the SHA-256 algorithm, and not the scrypt one.You can only mine SHA-256 coins. You cannot mine scrypt coins.

","[
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    ""hardware_name"": ""BI FURY 5GHZ/S USB MINER"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB device"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""graphics card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB stick"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASICs"",
    ""hardware_is_owned"": false
  }
]"
11809,"Date: 2012-02
Topic: Mining with Slitaz?
### Original post:
Is anyone using Slitaz to mine? Share your success.

### Reply 1:
<link> megs makes it very attractive for mining, can install on very cheap flash memory, 128MB, 256MB, 512MB, 1GB.Once booted it runs entirely in ram.It's based on Debian which people are already mining with.

","[
  {
    ""hardware_name"": ""flash memory"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""128MB flash memory"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""256MB flash memory"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""512MB flash memory"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1GB flash memory"",
    ""hardware_is_owned"": false
  }
]"
14206,"Date: 2011-06
Topic: Buying Used 5850
### Original post:
Alright, so I was gonna buy a 5830 from NewEgg to replace my 3850 and start mining, but that opportunity is out the door. I have found someone selling a used sapphire 5850 xtreme on CL and he seems like a nice enough guy, but of course I'm wary. After asking if I could see it in action before buying, he has offered to video it running in his case with a fairly intense 3D game on the monitor, and show that to me when I come to pick it up. I realize this is a pretty big risk, but the price is right. Plus, I have no problem banging the shit out of his door if it's defective until we meet an agreement. Any advice?

### Reply 1:
may i ask how much is he asking for said 5850?

### Reply 2:
$130 -- He also noted he was a gamer and upgraded to a 6xxx series card.

### Reply 3:
see it in person first. make sure you bring a friend.

### Reply 4:
Don't bring money, check it out and offer to meet in a public place (not a parking lot), ask if it's ok to write down his name and address as it appears in his drivers license (if he hesitates, offer yours in return).Recently a man was robbed at gunpoint when he met a CL phone seller at a fast food restaurant.

### Reply 5:
I've done CL transactions before, I'm not worried about getting robbed. I'm more worried that he may have OC'd the GPU and damaged it or something like that, and was wondering if the video seemed like good enough proof to you guys.

### Reply 6:
I Just bought a used 5850 off craigslistIt went well, seller was just a young kidPaid $170 though, oh wellHad it in my rig getting 300Mhash within the hourCan't overclock it above 775 mhz though, need to flash the bios I thinkStill, overall, happy with the deal

### Reply 7:
The Sapphire 5850 Extreme just came out 2 months ago (for $150 MSRP), it should have a solid warranty.He's probably just an average gamer, I'd ask him to run a stress test for a few mins.Edit: maybe a video which shows the serial, and some stress tests would be great.

### Reply 8:
I bought all of my cards used on ebay and locally. So far the worst that happened is a fan died and I had to buy an aftermarket cooler.

### Reply 9:
Recently bought a used hard disk on ebay, a Samsung F3 750 (since they are out of stock and needed for my raid). Checked the uptime on it, it was run for only 124 hours and benched better than existing HD's. Was a bit apprehensive, but in the end it turned out great!

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    ""hardware_name"": ""3850"",
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  },
  {
    ""hardware_name"": ""sapphire 5850 xtreme"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6xxx series card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sapphire 5850 Extreme"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Samsung F3 750"",
    ""hardware_is_owned"": true
  }
]"
13616,"Date: 2019-05
Topic: Using functions from api.c in cgminer
### Original post:
Hello!I am creating my own application for manage of Antminer S9.I found source with API here: <link> there is file api.c with functions i need and example in api-example.cBut how i can use API from api.c and create my own application for send command?Is it possible to create library from cgminer for using functions in my C++ project? How is possible to use functions from this project?

### Reply 1:
I put an example in C, Java, PHP and there's also an example in Python and Ruby.Look for the word api in the filenames.If that doesn't help, you'll not be able to write anything anyway.It's a simple socket, you just send a command and get a reply then close the socket.The ""library"" is called socket programming.

","[
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    ""hardware_name"": ""Antminer S9"",
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573,"Date: 2013-06
Topic: [Groupbuy] !NEW! 2nd batch Jupiter KNCMiner - 2 sold - 3rd miner: 33/240 sold
### Original post:
Payments confirmed and updated; jski and voodah addedThx

### Reply 1:
Thanks Ty,Have you gotten any closer to where you going to stage all these miners, KNCMiner or somewhere else??

### Reply 2:
you're welcome Yes actually; I'm visiting a datacentre this friday to take a look around and see what we can do for eachother. It's has a bitcoin-friendly owner which is a big plus. So hopefully more on that this friday KNC still hasn't given it's hosting prices so far so no update there..Cheers

### Reply 3:
3 shares for me = .9 BTCs sent <truncated> ID: <truncated>

### Reply 4:
tyrion, are you Dutch by any chance?

### Reply 5:
Yes I am @zurg, payment confirmed, I'll add it to post

### Reply 6:
Awesome, me too If I buy a share I might visit you and the miners to make sure your not scamming us

### Reply 7:
That shouldn't be a problem if the miners end up getting hosted where I'm going friday.. You should buy more than one share though if you want to visit

### Reply 8:
Sure thing I'll probably buy 2 or 3 shares, i'm 15 so I don't have to much money to spend Where are you planning to host the miners?

### Reply 9:
I was kidding about buying more than one share! Also, especially if you're 15 take care not to spend more than you can afford!That being said; I'm looking at a datacentre below Rotterdam this Friday. Also I can't make any 100% promises on this cause the datacentre owner will have to agree to this as well ofcourse We might have to transport you there blindfolded Cheers

### Reply 10:
I know you were kidding, but I was planning on buying more than 1 share anyways. It's probably best of you knock me unconcious before you bring me there so as to not compromise the secret location On a serious note though, how much Gh/s will 3 shares buy me?

### Reply 11:
LOL!Well, with KNC's announcement of this afternoon; a Jupiter will hash 400GH. So currently one share should give 400/248 == 1.613GH, three would give 4.839GHCheers

### Reply 12:
Nice, way better than buying that jalepino thing from BFL. Hopefully this can earn me a little bit of money on the side Thanks for answering my questions!

### Reply 13:
yeah I have 4 x jalapenos on order since jan 2013 they are up to sept 2012. So i grabbed 10 then 5 shares here. a total of 15 so far. I am very tempted to buy 5 more maybe tonight.

### Reply 14:
Nice! How high do you expect the difficulty to be around September?

### Reply 15:
it is 19 mill today. will be 21 mill in 3 days. I think 10% each 10 day adjustment. Adjustments are close to 10 days based on blocks made 2100 usually takes 10 daysSoJune 28 = 21 mill July 8 = 23.1 millJuly 18 = 25.4 mill July 28 = 27.9 Mill Aug 7 = 30.7 mill Aug 17 = 33.8 mill Aug 27 = 37.1 mill then it picks up in sept due to knc 20% each adjustment so sept 6 = 44.5 mill sept 16 = 53.4 mill if I am correct you will be paid off quickly under 2 months . but lots of ifs sooo many ifs

### Reply 16:
yeah it is kind of impossible to accuratly predict what the difficulty will be and if bitcoin prices will rise. Let's hope the difficulty won't be higher than that in september.

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    ""hardware_name"": ""jalapenos"",
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10303,"Date: 2017-05
Topic: S7 miner one board hotter than the others, why?
### Original post:
about a month ago I got a used S7 that has run ok for now. However i've had to reboot a couple of times and I suspect it's because it went over 80C and stopped. I check the board temperatures and one is running at 70-71C while the other two boards are running at 62-63C. Could this be an indication the miner needs a dustoff ? I'm running it next to an S5 (about 4 inches apart) so my other thought is that maybe the S5 is generating heat that is conducting to the S7 board closest to it. The S5 boards are running at 56-65C.Thank you for any help you can provide.

### Reply 1:
possibility that S5 is influencing the higher temperature but to rule that out, you can move S7 into another air conditioned room and power it up and check the temperature. If in colder air conditioned room and 1 pcb is showing still hotter temperature, then, time to open the unit and see if cleaning be needed. We have seen many units with temperature problem had everything you can think of collected and saved on the hash PCB and inside the S7 case.dust, human hair, animal hair, hairball, candy wrappers, parts of vermine, insects. So dust off may help if that is the case.If dust off and in the cold room and the temperature will not be resolved, then please check the intake fan, if it is spinning at at least 3600 RPM. if none of those solves the problem... then you probably have some chips or components that are degraded but still function. At this stage, not sure if its cheap enough to repair or seek used S7 and replace the parts or let it goRepair on S7 pcb can cost from $35-$85 range some are less and some are more.

### Reply 2:
I can't move the S7 to another room but I can power down the S5 for a trial period. So I will do that first. As for the fans I just checked and they are running at 4500 rpm or so. I have seen a lot of dust on the fans so I imagine there's dust on the inside. I saw a few videos on how to clean the S7 so I will take that up once the S5 power down test is complete. As for repairs it's too costly for me to send it for repairs. Are all boards on an s7 the same? this way I could just get a new-er board and keep as spare.

### Reply 3:
if you see heavy dust, probably that be the cause.replacement wise, depends on where you are located,may be cheaper to just buy a replacement PCB. or other units. PCB version or model needs to match as there are several versions of S7 exist

### Reply 4:
How do I know which PCB to get?

### Reply 5:
The thermal paste can go bad too,check that last by removing heatsink & cleaning & reapplying with the correct paste,ask around about what paste is recommended

### Reply 6:
There is no thermal paste in S7....

### Reply 7:
If you clean it and it still runs a little hot thats not really a big deal. Unless it is throwing a ton of hardware errors or crashing all the time just let it run a little hotter.

### Reply 8:
Looking at the exhaust end the board on the left will almost always be a fair bit hotter than the other 2. Reason is the air flow in that location. Same applies to the s9 and t9. Just the nature of the design. The only reason for the *almost* is because s9/t9 miners with auto-tune can change it if Vcore is higher/lower per-board.

### Reply 9:
Coulda sworn I saw folks cleanin & reapplying paste on S7 awhile back....my bad

### Reply 10:
There is thermal adhesive in S5+, S7, S7-LN, S9, R4, T9, L3 and L3+ heatsinks.

### Reply 11:
So today I got an alert that my S7 was offline, again! I couldn't go to turn it back on for almost 8 hours. Thanks to you and some you tube videos I had a pretty good idea that I had to clean it and how. I finally went to my S7 and took it apart. There was caked dust along with some real life bugs that caused obstruction on the front end of the boards. One more than the others. I spent a whole bottle of compressed air cleaning it up inside out and took out each board and blew all the dust out. Eventually I figured I got all the dust out that I could. I put it back together and turned it on. It wouldn't turn on at first but I figured out I hadn't plugged in the front fan first. Plugged it in and got it working fine. Temps are now in the 50-60 range versus the 60-75 range that was before. I hope it can now work for months without stopping. Thank you all for your help.

","[
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    ""hardware_name"": ""S7"",
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  },
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    ""hardware_name"": ""S5"",
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  },
  {
    ""hardware_name"": ""PCB"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7-LN"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  }
]"
5083,"Date: 2013-05
Topic: [Ann]Purchase ASIC chips and assembly now: 4,248 chips left.
### Original post:
Can I place order in batch 4 without losing my place in batch 3?

### Reply 1:
Lots of people have done that already. Your safe.

### Reply 2:
got 48 chips and I intend to buy the fully assembled miners .

### Reply 3:
Payment sent for 80 chips from <truncated>

### Reply 4:
Yes. Any orders you place for chips in Batch 4 or later will not have an effect on purchases made in Batch 3 or earlier.All purchases received, recorded, replied.

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    ""hardware_name"": ""48 chips"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fully assembled miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""80 chips"",
    ""hardware_is_owned"": true
  }
]"
12812,"Date: 2014-01
Topic: bfgminer CPU 100% with USB Erupter why ???
### Original post:
Hi all,I have a big problem.I just change USB erupter from Windows to Linux debian, and now, my CPU works at 100% all the time.Under Windows CPU works less than 1%.I don't understand why CPU works now at 100% with the USB erupter.My top output:Code:Tasks: 87 total, 1 running, 86 sleeping, 0 stopped, 0 zombie%Cpu(s): 38,1 us, 13,1 sy, 1,7 ni, 47,1 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 stKiB Mem: 2074220 total, 373912 used, 1700308 free, 127892 buffersKiB Swap: 842748 total, 0 used, 842748 free, 170104 cachedPID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND8881 root 20 0 99216 3240 2336 S 99,9 0,2 107:44.30 bfgminerYou can find my config file:Code:{""pools"" : [ { ""url"" : <truncated> ""user"" : ""xxxxxx"", ""pass"" : ""xxxx"", ""pool-priority"" : ""0"" }, { ""url"" : <truncated> ""user"" : ""xxxxxx"", ""pass"" : ""xxxx"", ""pool-priority"" : ""1"" }, { ""url"" : <truncated> ""user"" : ""xxxxxx"", ""pass"" : ""xxxxxx"", ""pool-priority"" : ""2"" }],""api-mcast-port"" : ""4028"",""api-port"" : ""4028"",""expiry"" : ""120"",""expiry-lp"" : <truncated> : <truncated> : <truncated> : <truncated> : true,""no-unicode"" : <truncated> : true,""queue"" : ""3"",""scan-time"" : ""60"",""log-file"" : <truncated> : <truncated> : <truncated> : ""3"",""shares"" : ""0"",""kern<rest of post truncated>

","[
  {
    ""hardware_name"": ""USB Erupter"",
    ""hardware_is_owned"": true
  }
]"
19716,"Date: 2014-08
Topic: How do i add a 2nd S3 i bought two.
### Original post:
I'd like to know how i add a second s3. Then additional ones after that. I have one. got it working. Do i just plug the second one in or must it be configured?

### Reply 1:
You just have to change the ip of one of the S3 so you don't get ip confusion and thats all..

### Reply 2:
From this192.168.1.99to this192.168.1.91?

### Reply 3:
From the default to anything else on last part not being used. With two you need to have different IP addresses for each S3.

### Reply 4:
can't i just change the last digit in each ip?

","[
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    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": true
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]"
8977,"Date: 2015-03
Topic: Would a C1 survive without water cooling in a -1C cooled room ?
### Original post:
hello, would a C1 survive for 5 days in a room with -1C ? without Water cooling and only 4 Fans ?

### Reply 1:
Real tricky question...You should specify, either celcius or farenheit, this is a 32 degree difference.Think that -1 farenheit is about -30 celcius.In both cases, it's not a good idea for a C1.If the room could have a steady -1 (Celcius) then you would only need a small fan, considering -1 <truncated> the miner is also alone, -1 celcius is not that cold.I have an S4 in a open window bathroom in the middle of the winter the S4 got down to 33 celcius last night...If it's -1 Farenheit then the miner is more at risk of actually freezing and lot worst <truncated> naturally give off heat, the absence of cooling system in such cold weather will create a lot of condensation.Cold environment turns to ""computer sweat"", then to sweat beads, real quick.Ever seen rust on mobo's? That's computer sweat settling in.Water and electricity don't match; you'd need a dehumidifier running 24/7 but then you lose your cold temp since a dehu is a small heater.Once this computer sweat is materialized and melted by the chip heat, turns to water.This makes it at high risk of fire because water can cause serious short circuits. Either way, you'd be better off with S3's since the C1 is designed to be liquid coo<rest of post truncated>

### Reply 2:
Short answer: No

### Reply 3:
You can always modified by putting in some heat sink, aluminum or copper wire and glue it to the center of the chip then fan would helps. But I recommend you not to do it unless you really know what you are doing.

### Reply 4:
I highly doubt it water is amazing at absorbing heat.

### Reply 5:
why ""only 4 fans""? the C1 has a singluar fan. the other 3 are in the cooling loop and will have zero effect if you dont circulate a coolant.unless you planned to circulate air - in which case your pump will last about 5 minutes.tldr; dont buy something designed for liquid cooling and think it will be fine without liquid or cooling.

### Reply 6:
C1 has internal heatsinks and with temp around zero they can work at 225Mhz without liquid cooling, but temperatures can reach 70C on blades which I do not recommend.

### Reply 7:
there is so much surface area on the waterblocks that you might need 10000cfm of air at 0c to keep it running

### Reply 8:
I'm not sure how you will use 4 fans if not using water. But without water it get's to hot and will turn off. I can say I had a cold ambient temp (was months ago in winter) when my syscooling pumps died. It ran and turned off. If you want aircooled your better off with a different miner.

### Reply 9:
Have you ever seen C1? I don't think so. It has not only water block, but also small heatsinks on each blade. It is sufficient when underclocked and even better also undervolted. In case of total failure of fan and pump, after it reaches 100C (or a bit more) it put itself into halt mode with low power consumtion. Bitmain did very good job here.

### Reply 10:
I actually think its possible. If you fill the block with water and close it again it should be able to remove enough heat with very cold ambient air. You might get issues with leaks due to the pressure and plastic caps though.

### Reply 11:
Water required a lot of energy to heat up.

### Reply 12:
The real question is why are you trying to torture your C1?If the room is -1 any temperature, just stick a bucket of coolant next to it with a submersible pump and stick both the intake and the out in the bucket of coolant the cold room will be enough to cool the coolant so the C1 will be happy.Don't torture your miners, love them.

### Reply 13:
it's all about <truncated> it straight to water mains! careful with the pressureorother idea might be doing a siphon system with a big bucket, water jug, 55gallon drum

### Reply 14:
No, unless you put in a heatsink and therma paste (please don't use chocolate as therma paste) into the core then only you can cool it with fan.

### Reply 15:
I really would highly recommend against it. I don't think it is a good idea to risk it if you can bring the water cooling along anyways. Maybe if you hook up a heat sink like someone said above.

### Reply 16:
Please use a chocolate on top of yourself Banana, it might to make you more useful than suggesting stupid things. If you don't know anything about it, do not suggest please.C1 has four heatsinks and two water blocks. With thermal paste from Bitmain, of course. It is enough to cool C1 at cold ambient only by air when underclocked to 225MHz. All Antminers have overtemperature control which stops mining at 80C+, and undocumented failure control which shuts down system at temps over 100C. It is not recommended to run any device at high temperatures, but IC chips used by Bitmain has guaranteed working temperature at 125C (with lower efficiency).

### Reply 17:
Yes, but not with default clock, <rest of thread truncated>
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    ""hardware_is_owned"": false
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bucket of coolant"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""submersible pump"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heatsink"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""thermal paste"",
    ""hardware_is_owned"": false
  }
]"
15974,"Date: 2017-08
Topic: Creating nonsense fork in blockchain
### Original post:
It is just a stupid question. Imagine if I start mining over an old block which already has many subsequent blocks, find a new block and submit to the network. Will they accept it and create a nonsense fork?I know it is the longest chain that really matters, but would the network accept my block, creating the new fork or simply reject it?

### Reply 1:
Only work for the current block is sent out. If you submit a hash for a past block it will be rejected, probably as stale or not meeting current difficulty.

### Reply 2:
That block will be simply orphaned.To do a fork you need to make your own client with its specific rules, and distribute it to people who will use it.

### Reply 3:
Yeah I understand the block would become orphaned. But would the other nodes add it to their databases or reject it?

### Reply 4:
It would not be orphaned. Work for old blocks is no longer sent. Only work for the current block is sent. So hashes for past blocks would be rejected.

",[]
19931,"Date: 2014-10
Topic: Bitcoinclient isnt working
### Original post:
Im nearly sure that my problem is just totaly simple, but i have no idear what the problem is. My GrKa is an R9 280X Tri-X by Sapphire and my cpu is an fx 6350 just factoryside overclocking. I hope this helps. I gues ists sometihng with java, because minecraft is alsow not runing properly. I got the newest Version of java and im using bitcoin client v1.6.1 .This is displayed if i hit the engin on button:2014.10.12 [19:24] No devices to start! Please connect mining hardware to USB port(s) and use devices menu to probe for them. 2014.10.12 [19:24] Uncaught exception in thread AWT-EventQueue-2 <truncated> you for all answers.greets A SQUAD LEADER

### Reply 1:
What are you actually trying to do?If you are trying to mine, it isnt really the bitcoin client you want to have working, but a miner (eg cgminer).

### Reply 2:
hi,thx it startet working, eaven if i dont know why....du you think a Hasrate of 0.63 is okay for my system?thank you very mutch for answering so fast^^

### Reply 3:
You need to be more clear on what your problem is exactly, what steps you've taken to fix it and what errors you're getting. Also, mining Bitcoin with a graphics card is going to make you lose money. Buy a dedicated ASIC miner or buy Bitcoin and hold.

","[
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  {
    ""hardware_name"": ""fx 6350"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
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]"
11970,"Date: 2012-08
Topic: CGMiner, bat files and windows.
### Original post:
Just noticed that I posted this on the wrong place -.-If a moderator could move it...*Mining support I suppose*

### Reply 1:
The BAT file looks good, assuming it's in the same directory as cgminer.To be sure you can do something like this:Code:c:cd <truncated> -u user -p password -o <link>

### Reply 2:
Use the Worker name, NOT your user name at BTCGuild. It should be under Manage Workers.

### Reply 3:
Your suggestion worked sir.Thank you very much.Yeah, I know, but read this.""After downloading and extracting cgminer, run cgminer.exe. When you launch cgminer.exe, enter the following:URL: <link> [btc guild username]_[worker name]Password: [leave blank]""

","[
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    ""hardware_name"": ""cgminer"",
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  }
]"
15433,"Date: 2014-12
Topic: Need help in starting mining
### Original post:
I have decided to start mining. I have1. Cheap Electricity. 2. Some space. 3. Some time. 4. Money to spend. ($1k-$5k)For what I need your help 1. I don't know what are the hardware and software things. And I don't want to lose my investment. 2. I can buy any powerful computers if needed which may be available in the market. What specifications should I go for? 3. What are those odd looking miners, I haven't seen those things in my part of world. Are they exclusively for mining, can I get such things in cheap prices through DHL or other couriers? Are there any other options? 4. Mining pools seems easier then collecting the hardware, is there something I need to know beforehand. Please suggest me, and share your experience. But don't share your referral links to the cloud mining sites. Thanks in advance.

### Reply 1:
friendly advice, buy some btc and hold on them.there is no mining equipment worth of buying.with that money you can buy way more btc than any miner on the market can mine you in his lifetime.I have certain amount of btc and by trading on bitstamp (sell high, buy low) I am earning in a month more than I was able to mine with 20TH in 6 months.don't throw your money.be smart.

### Reply 2:
yesat current price bitcoin mining is not profitable specially for new minersbetter you buy bitcoins and hold themwith mining it will hard for you get ROI for your investment

### Reply 3:
He will probably profit since he has free electricity and the resources. But it also depends on the price of bitcoin after an year or so, as that would also determine if you would profit. Since it isn't too profitable, I would also suggest not starting with it.

### Reply 4:
Start here and *REALLY* research!<link>

### Reply 5:
If you have cheap electricity, get one of these, but make sure your electrical circuit can handle this:<link> you don't have 208V power outlet or higher, just skip mining altogether.But if you fulfill this requirement, get one of these, mine for like 2 months, then resell the shit out of it...boom profit!Otherwise, mining is really a zero sum game. Too many factors involved: delivery not on time if ever, pre orders are mostly scam/long con, electrical hazard leading to home or building fires, electrical and cooling costs to keep equipment from overheating, difficulty too high and pool luck variance, constantly monitoring and maintaining the equipment is a pain...Alot of things have to bounce right for a miner to even come close to even, or just to minimize loss.It's basically the opposite of the Hunger Games mantra ""May the odds never be in your favor"".

### Reply 6:
i've an SP35 on it's way to me now to add to my rig.buy bitcoin, buy miners, buy beer.job done.

### Reply 7:
Thanks everyone. I have made my mind.

","[
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    ""hardware_is_owned"": false
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    ""hardware_name"": ""SP35"",
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]"
9989,"Date: 2016-09
Topic: can't find power cord to APW5
### Original post:
hi,i have this cables come with computer C13 10A-230V (0.75mm)why there power supply using C13 in first place ?they should use C19 to find cord with 2mm

### Reply 1:
C13 is the most common and easiest to find connector. Yes many computer cords using it are too thin, I've seen some as small as 18ga which is only good for 8 amps. But - the C13 is available with cords up to 16ga rated for 13amps and those are what you need.Example for North American 110vac <link> the C19 plugs/sockets are rated for higher current but are also harder to find.

### Reply 2:
i need cee 7/7 schuko - c13 16amp on amazoni can't find one!

### Reply 3:
found one finally <link>

### Reply 4:
Personally, when I have trouble finding the right plug/socket combination, I either just get a cord that has one end right (usually the C13) and then go to a hardware store and buy wire it yourself plug to match what I have on the wall to replace the one that is wrong.

### Reply 5:
These guys have some options: <link> Oh I think I see your problem. The 2mm is referring to the width so something like the European equivalent to American wire gauge.EDIT2: <link>

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6220,"Date: 2013-09
Topic: Creating a Hashing chip?
### Original post:
i started this out in the newbies forum but i recently got out of there so i thought here would be a better place to post.my factory has an assembly line for ic/ chips but we were doing mostly receivers, lnb/ satellite tv accessories. we grab parts from china and assemble in indonesia so we have all needed equipment to assemble. labor is cheap here and i already have an assembly line for this sort of thing. i thought might aswell make some asic miners for u all.my problem is the chip design/ acquiring the chips. anyone know a good chip designer and anyone know a rough estimate? anyone here want to help me out or knows about this sorta thing?

### Reply 1:
Read up buddy, don't do the short cut or lazy way. make an effort and read the postings.

### Reply 2:
At this point if you don't develop for at least 28nm or smaller then it really is pointless and even at that point you may get your NRE back but your customer base may not achieve ROI.

### Reply 3:
Let's see a 45nm REAL chip before asking for 28nm.....

### Reply 4:
Maybe but I am starting to think doubtful because of the development time and the NRE associated. Right now the trend seems to be die-shrinking. If it does come, I think it will likely be from the existing ASIC manufacturers who already have R&D sunk in and an existing pipeline.

### Reply 5:
NRE costs are around a couple hundred thousand to a few million dollars, depending on the chip feature size (could be anywhere from 130nm to 28nm - or you could spend tens of millions and go all the way down to 14nm).If you have that much money sitting around you can definitely do it. Otherwise you can acquire chips from companies that sell bulk chips. Bitfury is probably the best bet, since they actually have chips and are selling them, although right now raw chips are 1BTC each: <link> will be selling 28nm raw chips, you can order them here: <link>

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  },
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    ""hardware_name"": ""receivers, LNB/ satellite TV accessories"",
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    ""hardware_name"": ""28nm chips"",
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9837,"Date: 2016-05
Topic: [ANN] Spondoolies-Tech - carrier grade, data center [Assets for sale!!] [UNMOD]
### Original post:
<link>

### Reply 1:
<link>

### Reply 2:
<link>

### Reply 3:
So far Guy is winning this thread by a mile.*pops some more popcorn*Please continue....

### Reply 4:
you cant be bothered to use images that are not copyrighted? Your company ran off with $2.25M and your best logic is putting up images that are covered in watermarks and labelled ""for preview purposes""?using those images in te forum is theft from the copyright holder. good job making spondoolies look like (even more of) the bad guy here

### Reply 5:
I am not claiming to be an attorney, and more importantly I am not representing you, however I don't think the kind of lawsuit that dogie has filed is a restraining order. I am also fairly certain that talking to dogie directly and making the kind of posts that you are making here (and elsewhere) would likely have roughly the same potential legal implications.

### Reply 6:
BTCS got scammed on a pre-order.BTCS didn't get the memo on pre-orders.

### Reply 7:
It was $2.25M of direct cash, then admin and legal fees for a year long international merger for an SEC regulated company probably got them into $3.xxMBTCS is a publicly listed stock on OTC, meaning many of the shareholders are average people with mortgages and families to feed. Spondoolies was the one with 'rich' investors comprising of single wealthy individuals and VCs.

### Reply 8:
BTCS loses money every quarter, yet the administration seems fit to pay themselves 4.7 times their income.Here is the latest filing: Yahoo Finance

### Reply 9:
Lol WTF is going on in this thread, ladies? Is it that time of month or what.

### Reply 10:
<link>

### Reply 11:
RoadStress' pre-order ASIC scam imploded, but not before swindling millions of $$$$ through a fraudulent merger.When called out for this behavior, the response was to delete critics' posts.When we moved to an unmoderated thread, the response was to crapflood it with very long xposts and NSFW pics of dog bollocks.RoadStress is, as usual, keeping it classy.

### Reply 12:
Has someone bought your account or something, you've gone miles deep into crazy territory...

### Reply 13:
BobLawblaw simply trolling

### Reply 14:
Before you post ask yourself; Would this make Revital proud of me?

### Reply 15:
<link>

### Reply 16:
or you don't care,,,,,,,,,,,,,

### Reply 17:
I dont have any skin in this train wreck, but watching an ex CEO of a company that mishandled $M's of other peoples money, take the time to post like a child, just because he can, has broken my pathetic-o-tron meter. On a certain level, this particular brand of entitlement, is quite disgusting to witness. Seems Guy couldnt give a flying fudge cake, for his own reputation, but i wonder what the rest of the team thinks? Are they accomplices or victims? Just a thought. <link>

### Reply 18:
Putting aside jokes, I am really worried about Adam.He took the wrong choice at every turn in the dispute with Spondoolies. I can't reveal the information now, but I will certainly do so after the matter will be resolved in court, one way or another (assuming non confidentiality agreement).In my estimation, he is already in the negative between $15K to $20K and I hope he didn't take loans to pay his lawyer.If the community wants to help Adam, Adam controls the following wallet <truncated> hope that at least he will be able to recover his lawyer fees.Guy

### Reply 19:
That list is outdated and they've conveniently ignored it as not updating it increased their public perception.Stas was an intern who was around for the company's start and that was it - good guy.Adam Back AFAIK did very little and it was more about getting his name on the listGadi left and was hired by Bitmain in January, he is now the ""Israeli Branch Manager, VP International Sales & Marketing""Zvi as you know left quite a long time ago to work for Microsoft and his own startupThe only missing faces I see is 1. Me and 2. the CFO they hired. Between Guy and the CFO they managed to make sure creditors were damaged far beyond what they should have.

### Reply 20:
I'm complete ignorant in this case and newbie in Bitcoin <truncated> of who is right who is bad, how wrong is to make such pity at someone, who is in conflict with you over monies, asking disappointed community to give money he claims from you?Basically projecting someone as beggar and like he already lost case.In the same time you try to distance yourself with ""can't engage him"" - you just did and I believe it's manipulating picture of the court case.But what I know... my English isn't even good enough to name it properly.EDIT: and for ignorant like me, someone else non-validated address is sign of scam attempt rather than helping hand.

### Reply 21:
It was an address I provided for them as a settlement option pre-action and for what its worth I do still control that address.

### Reply 22:
Guy really is givi<rest of thread truncated>
",[]
20641,"Date: 2015-09
Topic: Low difficulty and no shares being accepted - any solutions?
### Original post:
I have just tried to do a bit of GPU mining on cgminer with an AMD graphics card. I have installed the required hardware and I can connect to the pool fine. The only issue I am having is that no shares are being accepted due to low difficulty, I have spent hours researching trying to find the issue with no success. Please help! Here is my .bat:setx <truncated> 100setx <truncated> 1cgminer --scrypt -o <truncated> -u zoormagoodness.two -p ss -I 14 -g 1 -w 256 <truncated> 10240 --temp-target 55 --temp-overheat 65 --temp-cutoff 75 <truncated> is a log of what is <truncated> 13:47:31] Started cgminer 3.7.2[2015-09-27 13:47:32] Probing for an alive pool[2015-09-27 13:47:33] Pool 0 difficulty changed to 256[2015-09-27 13:47:34] Network diff set to 59.3G[2015-09-27 13:48:07] Pool 0 difficulty changed to 51[2015-09-27 13:48:07] Stratum from pool 0 requested work restart[2015-09-27 13:48:11] Rejected 02d5f4f8 Diff 90/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:19] Rejected 019b114b Diff 159/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:22] Rejected 04c152b2 Diff 54/51 GPU 0 (Too low difficulty) [2015-09-27 13:48:42] Rejected 03259bbd Diff 81/51 GPU 0 (Too low difficulty) [2015-09-27 13<rest of post truncated>

### Reply 1:
Bitcoin mining with GPUs is obsolete.

### Reply 2:
Although I cannot answer your question specifically, please understand that your task is completely academic.. meaning that you task will teach you, and help learn/understand the process, but not benefit you financially in any way.Please don't take this the wrong way.. I was GPU mining back when difficulty was 12 Million, and 10 GPUs would net about 1 bitcoin every two weeks... plus or minus as machines kept dying in the summer heat.. Difficulty is currently 59 Billion, 335 Million, 351 thousand, and change.., or significantly higher than my example... Today, those 10 GPUs would only net me pennies, per month.. The only benefit would be to offset the heat cost in the house, or educational.If your goal is educational, I'm sure several people on the forum would gladly donate old mining gear to you for the cost of shipping -- and you would burn far less electricity than a GPU, and be able to dive right in to Asic history.If your goal is to obtain bitcoin, it's best just to buy it.

### Reply 3:
Ohh wow didn't know the difficulty was that high :\ Guess that's the issue thenYeah I'm just doing it out of curiosity to learn, really? that would be awesome!Thanks for the info

### Reply 4:
You are mining with the wrong algorithm. In your command you have it mining with scrypt, not sha256.

### Reply 5:
Ohh okay, so this should fix it?

### Reply 6:
You can't, you can't mine SHA256d in an academic perspective. You can replace your ""scrypt"" to ""sha256"" or try blank. Not sure for that particular CGminer version, you're using a pretty old one. But you'll be making a few cents per year at most, it would take you years to reach minimum payout at a pool and you'd be using tons of electricity.I point you toward the Altcoin mining support section. You can get started with X11.

### Reply 7:
Okay, whats that?

### Reply 8:
It's an algo for Altcoins, another coin, one that can be mined with GPU perhaps profitably, depending on your electricity cost, unlike BTC.Since this is the Bitcoin-only board, i can't really elaborate on it much. I would recommend you make a thread in the altcoin section and if you want, post the link here to continue the conversation with me/us.

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7396,"Date: 2014-04
Topic: PSA: Replace BFL Bitforce Single SC OEM Power Supplies
### Original post:
Bitcoin Miners,This is PSA video I did this weekend concerning the BFL Bitforce SC Singles. We are recommending you replace the OEM power supply as soon as possible due to being a potential fire concern. Video:<link>

### Reply 1:
I took mine apart to see what was going wrong a long time ago. The 3 main caps and main fuse going into the PCB are blowing- creating the white powder.

### Reply 2:
I know what your saying, I had a small cap fall out as well. I had one almost blowout in my face.

### Reply 3:
What voltage do these thing run on and what kind of plug do you need?

### Reply 4:
They run on the standard 110-120volts, and it comes with a special 3-prong cords that plugs into a normal residential wall socket.

### Reply 5:
These things are long known to be a fire hazard, since day one of them shipping(First hand experience too). Your lucky to get more than a few weeks out of them. What's with the sudden post?

### Reply 6:
Duh. I mean what comes out the other side of that power supply and what kind of wattage requirements does it have? Is it 12 volts like most of the other BYO PSU ASICs?

### Reply 7:
It may have been mentioned but I wanted to show evidence and make sure people knew. Have one almost blow up in your face and you may want to warn a few people to hopefully save a fire or two I have known they burn out but the fire and exploding inside was new to me. Thats all.-D

### Reply 8:
Yeah, a couple PCI-E connectors that I assume are 12 volt rails.

### Reply 9:
4 out of 6 of my BFL OEM PSUs have failed. One day I came home to my entire house smelling like it was on fire. A burning plastic type smell. Sure enough, it was one of the BFL PSUs. After that I threw away the 2 working ones and bought some SeaSonic PSUs.

### Reply 10:
BFL gave me a 550W ATX supply with a jumper plug in it. It was a good one, worked until I sold the BFL.

### Reply 11:
Okay, glad it wasn't just me. I knew people said they were cheap, but gosh damn!. After my incident, all I could think about it I gotta warn others. That shit is dangerous. -D

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8069,"Date: 2014-07
Topic: I stumbled upon a minerscube website  the deal appears to good to be true.
### Original post:
If you believe they have come out with 5 TH/s units at 825 Watts, I have some lovely ocean front property in Nebraska I would like to show you. Joking aside, there is no way that is true and is most likely a scam.

### Reply 1:
My feelings exactly as the btc price is 6.5 which is 4100 usd much less then the paypal price of 4500They get 20 or 30 fools dumping btc at them and they do okay.

","[
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    ""hardware_name"": ""5 TH/s units"",
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]"
23394,"Date: 2021-01
Topic: Antminers not hashing
### Original post:
Hello guys! I have a wierd issue here, some of my s9 and t9 stop working one after the other. Not all the same time. Tried changing pool, tried upgrading firmware, nothing seems to work. Any ideas?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 <rest of post truncated>

### Reply 1:
It looks like all chains on this miner are dead, but the kernel log isn't complete, please reboot the miner and leave it on for 30 mins before copying the kernel log, you also mentioned that you have other issues with some of your S9s, please put that in a different new topic.And please don't upgrade to the latest firmware, it will lock your miner.

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20396,"Date: 2015-05
Topic: Help please
### Original post:
I am in the process of building my first rig, and I have everything together, but I don't know how to hook up the power supply cables to my GPU's. what I don't know is, there is two connectors on each card, so do I run two cables from the PSU to each card? And second, the cards came with Cross Fire cables. Do I tie the cards together with these as well?Thanks in advance for your help!

### Reply 1:
You need to fill all connections on the GPUsFrom my understanding card work better when they are working alone. Don't use the cable

### Reply 2:
If you're mining, don't use crossfire.

### Reply 3:
Thank you very much for the responses guys! I got it up and running, now I just need to figure out how to boot up to the HD that has Windows pre-installed on it instead of the mobo set up. Thanks again!!

### Reply 4:
In the BIOS, make sure the HDD is recognized, and set it as the primary boot device. Restart and you're in Windows

### Reply 5:
Okay, so I'm new to bitcoin mining and I need help. Whenever I try mining in my pool and I monitor my worker it says that my worker is offline. I use slush's pool btw. And the issue is I've use different password but it still says that my worker is offline and its really annoying and I want to mine.

### Reply 6:
your miner is working? the password is correct? do you see always offline or sometimes it go online?

### Reply 7:
What are miner are you using? Are you able to show screenshot's of the configuration?We just need more details to be able to help.

### Reply 8:
Okay, I use gui miner and I cant find the password to my worker thats the thing and I the pool I am in is slush's pool.

### Reply 9:
why are you using gui miner?what is the gear you use to mine with?If you are using your gpu to mine btc stop it is a waste of money.

### Reply 10:
Are you trying to mine with your CPU/GPU? its really waste of time. It is possible in some years back. And nowadays even using solo miners are also not much profitable Also i faced the same problem when i was a newbie ~Rude Boy

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21221,"Date: 2017-01
Topic: Socket error connection refused Antminer S9
### Original post:
Can you help me pleaseMy S9 show Socket error connection refused how could solve that issue?Thanks

### Reply 1:
did you upgrade the firmware? I made the mistake of upgrading the stock firmware of my s9-b10 to the new one and now I have the same problem, I've been trying to find the original firmware but has been impossible. they said is because at least one board is degraded or dead, they have to be all good for it to connect, try with a single board to see if works for you.

### Reply 2:
There is a dedicated S9 thread in the hardware section. Please use the search unction before posting as your problem has been covered many times already in the S9 thread.

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14038,"Date: 2011-05
Topic: Buying a videocard.
### Original post:
Hello, I want to buy a videocard for playing games (my GeForce 8600 is quite outdated by now...)So, what videocard has the best cost/benefit related to bitcoin mining and still can be used to play games occasionaly?

### Reply 1:
<link>

### Reply 2:
Give me a budget and I'll tell you right away

### Reply 3:
I'd like to spend no more than $110 or so on a video card.What's the best card at that price range?

### Reply 4:
<link> saved you 1 cent!

### Reply 5:
you can get a 5830 at 110$ (when on sale)

### Reply 6:
I just bought a couple of those days back, and I think they have high rate of DOA.Still testing...

### Reply 7:
I bought several of the 5850 version and every one is working great. No experience with the 5830.

### Reply 8:
5770 is your best bet though you may be able to run across a used 5830. I will be selling several 5770s next week for less than $100 USD equivalent in BTC, each shipped to USA. PM me if interested.Edit: there you go, NewEgg previous post.

### Reply 9:
they seem to have a ~5%+ DOA rate, still worth it

### Reply 10:
Definitely the 5830. By far the best value for that pricerange. I just picked up 3 of them myself, as all of the reasonably priced 5850's were backordered and 5870's are nearly non-existant at this point.

### Reply 11:
I agree, Get'em while they can be gotten. I wonder how much longer till you can't even get 5770's.

### Reply 12:
nster what video card would you recommend if I don't have a budget at all Also thinking what card would be best if this goes bust, though I'm hoping it won't etc. ?

### Reply 13:
That SAPPHIRE 100297L Radeon HD 5830 (The link to NewEgg, posted above)does it have a Linux driver, specifically Ubuntu?Thanks.

### Reply 14:
no budget = unlimited funds or 0 funds?unlimited, the 6990 of course, 0 funds, whatever you have of course If you game etc, I find the 6950 1GB to be the best value, if only mining, it is hard to say.... 4* 5970 or 4* 6990 would be best on a single motherboard cost effective-wise... Used 5970 @ 400$ each would be phenomenal value. But with such high difficulty, idk if buying a rig only for mining is the smartest idea

### Reply 15:
Yeah, it's true. With difficulty jumping 60%+ this time around, and projected to jump another 50-60% the next time around, and possibly again, it'll be much more profitable to dump the monies into bitcoins themselves, and hope the value of them goes up.

### Reply 16:
Seriously? Why? That's so lame...

### Reply 17:
Hi, I'm totally new to Bitcoins and since my desktop is >6 yrs now I've been planning on getting a new rig now.I think I agree with this, since I'm just getting into SC2. I'll be going for a gaming rig although still keeping in mind about mining. So after plenty of reading other stuff with all the talk of BTC's collapse in mind I plan to get 2*5970 aftermarket since I have quite a tight budget. What do you guys think about my decision?

### Reply 18:
And the CPU is? Bottlenecking is also a factor.

### Reply 19:
What is bottlenecking? I hasn't planned the rest of the components yet. Please do give me suggestions I'm just asking about my overall decision to go that way

### Reply 20:
if you have a sempron, no games would run well, so the CPU would be a ""bottleneck"" Think a neck of the bottle, which limits the amount of fluid the goes through.I find i5 2500K systems to be cheap for what they are also99.99$, GREAT price

### Reply 21:
picked up 3 of those 5830s today w/ the promo code... jumping into the game super late

### Reply 22:
RAGEEEEEEEI just bought three of those for $30 more than I needed to!I guess they'll be here two days earlier than if I had ordered them now though... 2 days of mining @ 800MH/s = 5.67 BTC = $36.87. So I guess I'm ok.

### Reply 23:
newegg are good with this kinda stuff... try contacting them

### Reply 24:
Will do, thanks.

### Reply 25:
125% more frequency, 50% less <truncated> power consumption and less performance in both OpenCL/OpenGL and Direct3D workload.

### Reply 26:
I think this question is going to be an ongoing subject, don't you guys think so -.-

### Reply 27:
buy 68xx instead of 5830.""in short"".

### Reply 28:
Skip the video card and buy Bitcoins.

### Reply 29:
yep.its Already more profitable and become more meaningful with every week.

### Reply 30:
And just when I was getting my first rig

### Reply 31:
don't worry you GPU invested not wasted.before GPU mining era was start, im use my AMD GPU in number of GPGPU appz to process images for example.also number of <truncated> with GPGPU support exist.also GRID teams seriously consider adding OpenCL support and same about Linux guys -)

### Reply 32:
How cheap would you have to find a 5970 for it to be worth it to purchase vs multiple cheaper cards? I keep seeing people saying they can find them for 400 used, but I haven't had that kind of luck...

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19288,"Date: 2014-05
Topic: Worker not reviving shares
### Original post:
So I got an ASIC 330mh/s block erupter I set it up and started mining. All was fine inside cgminer I got a best share of like 73 so I was happy. I left this running for about 5 hours then I checked my pool and there is NOTHING it says it's inactive running 0mh/s and I have no balance. I have tried multiple pools and even diffident coins. No change

### Reply 1:
First, that block erupter is useless, you will earn nothing.Second, what pool are you mining on? It's probably because even the share difficulty is too high, lol.

### Reply 2:
(Reply to reply above) I just started using litecoin. Estimated to make 7$ a week or so. It's the same problem with the worker. Diff is 256

### Reply 3:
You are mining Litecoin with a 333MH/s USB Block Erupter?

### Reply 4:
Yup. Only in litecoin its measured kh/s

### Reply 5:
Well then I have no idea what you are doing. Mining litecoin on the scrypt algorithm is impossible, since the Block Erupter is a SHA-256 ASIC.What miner software are you using?

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17204,"Date: 2012-07
Topic: BAMT - Is it possible to solo mining?
### Original post:
Like the title says, is it possible to do solo mining with BAMT?If it can be done, can someone explain how?Thanks.

### Reply 1:
Yes of course. Just set your server to be localhost and set your username and password to what you have in your bitcoin.conf file.

### Reply 2:
Hi, but i have to install the bitcoin client in bamt, right. Or is it already installed? Sorry i'm a bit of a noob in Linux.

### Reply 3:
Hi, if i have more than 1 miner in the network to connect to my server, bitcoin server, do i have to set diferent usernames and passwords?

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18807,"Date: 2014-02
Topic: I have problems to start my avalon 80 gh / s. Reward you in btc .
### Original post:
I bought an avalon These days, the 'I brought home my friend and' we've started using it as a pool Eligius, but then on my network to be able to utilize my friend has set up the 'ip address dhcp instead was first static. Now that 's IP address is set to dhcp and not static, how do I get into the car again to set the static? I tried to IPScan, I tried everything. any of you know help me? HuhHuh please let me work there and Reward in btc. thanks of the help in advance.

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21559,"Date: 2017-09
Topic: [Guide] Block Erupter Cube Setup
### Original post:
hiiiiPlease help me here, i wanted to mine some save coins with the cube but can not figure out the pool port for the <link> my bat is not complete: mining-proxy.exe -o <truncated> -gp ?? -p 18665gp is missing and there is nowhere i can find it, lol, guys where can i find it? If someone knows please help. I did copy your bat for btcguild and its working just fine but i wanted to learn how to mine other coins with this cube. mining_proxy.exe -o <truncated> -gp 8330 -p 3333

### Reply 1:
SkyscraperFarms Guide to setting up a Block Erupter Cube 30-38GH/s in WindowsI spent a few aggravating hours trying to set one of these babies up. Most guides gloss over a lot of the settings. This is my attempt to help make it easier for some of you.(**) these are the areas where I had most difficulty and it seems most people did not have these issues.(*) is only pertinent to those setting up multiple cubes. If you are only setting up 1 cube, ignore these * hints.1. Tighten/re-screw heat sink screws. Every cube I received had this problem. You will need to unscrew both front and back plates. Unplug cooling fan. Carefully slide the board and blades out all together. There are guide rails that the blades may get stuck on from shifting and you may need to adjust so it slides out evenly. Make sure all screws in heat sinks are tight. Then reassemble.2. Attach to PSU. You will need a PSU with at least two 6pin PCI-E cables on it and runs at 280W, preferably more.3. Insert 30amp Fuse into Cube. I had a few fuses start to melt until I only pushed them in partially, enough to make the connection. (This only happened on high when the unit starts to get really hot, an external fan helped too<rest of post truncated>

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1652,"Date: 2013-09
Topic: [OPEN] GB #1 BPMC Red Fury USB Miner 2.2~2.7 GH/s 0.80-0.88 BTC or $139 Paypal
### Original post:
delivery time?

### Reply 1:
Between 1st and 2nd week of October i'll be packing and shipping them all the day I receive them all orders are going to be sent USPS Priority and shipping is included with prices. I need to reach a minimum order quantity of 250 units I will also be combining my ebay orders as well for these so I should reach it easily.

### Reply 2:
good luck with this venture dude im gonna bookmark this page cause i may order one just not right now

### Reply 3:
Thanks and many kudos im really looking forward to this! Cant wait to see your order come in.

### Reply 4:
These things are not even available yet and these guys are undercutting each other already. I would suggest BPMC step in and do something to protect the market or there will be no meat left on the bone for resellers to negotiate with large orders.

### Reply 5:
Actually this is a group buy that needs to hit 250 units the resellers don't have the minimum order placement of 250 and it doesn't seem like we are undercutting each other, you pay the price you get the unit when it arrives no worrying about x amount of units left (except if they are all sold out).I'm not saying its a bad thing if you get enough people to do a purchase it will help you out immensely.

### Reply 6:
Yeah that's exactly why i'm offering just slightly under the re-sellers currently, I didn't want to do it but I do have to hit 250 orders minimum like tomas_s has mentioned to become an authorized re-seller. And since this is my first ever group buy I want to prove to the community I am more then capable of handling this type of task.I do appreciate everyone's input and thank this community for giving me the opportunity to sell bitcoin mining hardware.

### Reply 7:
I can verify that we are working with Maidak as a reseller

### Reply 8:
Thanks for verifying I realized there was a issue in my registration page while doing some editing everything is fixed and you can still go through and do orders by paypal now.Soon as I got it fixed got a paypal order in right away.

### Reply 9:
your pricing structure put me out of reselling sticks. simple math. the other sellers offer 20 sticks for .85 each and 1 stick for .9 each. if I buy 20 sticks at .85 and sell 2 at 1.77 my profit was .07 btc. and the guy buying 2 sticks from me saved .03 btc .. your pricing of 1-20 at .88 means 2 sticks are .176 so I get no sales. I have 0 incentive to buy from ssinc in amounts of 20 sticks. while business is business you are hurting other resellers like myself which in turn will hurt ssinc , dabs and Thomas_s I never begrudge anyone trying to make a buck and I will link your post to the bitminter forum letting them know that small 2 stick sales would be cheaper with you.

### Reply 10:
Well considering I haven't had any bitcoin orders yet unfortunately I went along and matched every other group buyers payment I just scaled down the volume for the bigger orders of 50+ units.

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4944,"Date: 2013-05
Topic: Avalon module repair
### Original post:
Hi. Maybe someone can tell which element knocked from the board at the time of delivery, and whether the recovery will help to restore the operation of the module?<link> Maybe module dont work from them?<link> module dont work <link>

### Reply 1:
Looks like there is a bit of trace still there, some careful soldering should fix that... be careful though you'll be up shit creek without a paddle if you lift what little is left.EDIT: good offer from Mrb there.

### Reply 2:
The missing component is a capacitor. However I have no idea if replacing it will fix it.So, instead of attempting to repair it, can I offer to buy this non-working module (which consists of 8 hash units total) from you for 20 BTC?

### Reply 3:
Actually, that's an inductor, not a capacitor.

### Reply 4:
That could possibly be a simple repair, is it not ? Just order the same kind of inductor and solder it on.

### Reply 5:
I know something way more easier. Take your other modules, look for the missing part, take it off, put it on your broken module, ta-da! Its working again!

### Reply 6:
Is it just me, or is that IC in the top left damaged?

### Reply 7:
Am I the only one that feels if you paid lots of money for this hardware than you should expect the maker of the hardware to be the one helping you getting it working again? I saw another thread where the guys Avalon board had some component burn out, and to me the first thing I would do is contact Avalon.Have you tried contacting Avalon about this?

### Reply 8:
I will offer 21 BTC.

### Reply 9:
OTtan already sold the unit to me.It is a connector header, not an IC.

### Reply 10:
Well it is in good hands. I hope you have a good time looking it over.Edit: In case anyone is wondering, yes, I am looking to buy Avalon Modules. I have a buy thread in the marketplace.

### Reply 11:
The missing component looks to be a bypass capacitor.It most likely will run just fine with out it if that is the only thing that is wrong.

### Reply 12:
I just looked a little bit harder at the picture and the missing component looks be an inductor not a bypass capacitor.DO NOT TRY AND POWER UP it could burn out the part right next to it.Sorry for hasty (BAD) advice above.

### Reply 13:
@mrb: ship the module to BKKcoins for repair?

### Reply 14:
I am planning to repair it myself. This is why I bought it in the first place.fasmax: a little late to the party <link>

### Reply 15:
dude, ship the module to BKK for repair. wink wink.

### Reply 16:
Newbie mistake.Was that the only thing wrong with the module?Can you share the pin out info of the ASIC and how the i/o signals are interconnected?

### Reply 17:
Will you document it for the benefit of the community? I mean, reverse engineer the board?

### Reply 18:
Looking at this IR image, this part (white color) on the last sub module at the end of heatsink could have a very high temperature when not properly cooled, adding an exhaust fan should helpI measured a 7c degree difference between intake temp and exhaust temp when there are two exhaust fans added

### Reply 19:
How you manage to get things fixed, that's sucky.

### Reply 20:
Actually (really, this time), it is a ferrite bead. Confirmed by reading the reference design.

### Reply 21:
Man... I looked at the ref design and thought it was a fuse

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9677,"Date: 2016-02
Topic: [Guide] Dogie's Comprehensive Manufacturer Trustworthiness Guide
### Original post:
Nicely done... and needed...

### Reply 1:
Thanks. If it becomes useful enough it might as well be a sticky. Would save us repeating ourselves about warnings.

### Reply 2:
Bitmine has asic, legitimate should be set to yes as they have delivered avalon clones.they also have protection plan in place.Black Arrow dont have asic, but delivered fpga and asic miners based on bitfury( legitimate should be set to: yet to be seen), do not understand how they can be more reputitable then bitmine?EditOther then that, great guide!Btw where is knc?

### Reply 3:
Its about the current generation. Its not about being a scam, its the overall feeling about their CURRENT products which are delayed and yet to be delivered. Using your proposed logic we'd have to call BFL reputable because they delivered FPGAs. The reason black arrow is 'yes' and bitmine isn't is because there are reports that bitmine is refusing to refund. Sound familiar? Forgot to copy in KNC, I'll do it now.

### Reply 4:
Thanks for explanation, however black arrow also does not refund nor buyer has a right to request it. I do not know bitmine tos, so they might have same tos regarding refund request as black arrow. Sorry, i disagree on legitimacy question regarding those to company. Black arrow did not even taped out yet so how can they be more legitimate ghen bitmine?Also you defended your reasoning of black arrow trustwothy status delivering in the past, so i reminded you of bitmine doing the same with avalon clones.EditAcording to bitmine tos buyer can requst an refund with 10% on top after 61 days delay.Further, they add hasing power on each 10 days of delivery delay. What option or protection plan black arrow has?You can not judge whole company legitimacy by refund reqest, what are handled acording to tos and case by case where you do not have all relevant information.You have delivered set to yes for black arrow! They delivered lancelots and miners based on bitfury chips, so bitmine deserve the same ""yes"" as they have delivered avalon clones. However, they both should have delivered set to ""no"" as they have not delivered miner based on theirown asic chips. Again exception, bitmine delivered a<rest of post truncated>

### Reply 5:
They can request a refund, but they're not honoring it - hence they receive a demotion in rank. Black Arrow IS actively providing refunds. TOS are irrelevant.

### Reply 6:
Have you been on black arrow thread lately? Have you seen refund request without response? Where you have read that they honor refunds? They do not refund anybody at this time, that could change but that does not change a facts.Can you point on refund complaints where bitmine denie refunds. Plese exclude trolls and newaccounts.Look here, black arrow mat does not even know will they allow refund let alone that tbey refund everybody who ask it!!<link> tos does matter, if an customer did not agreed on their terms then he did not have to order. Bitmine had always clear tos regarding refund and delay.Beside, you still did not addressed that they did not delivered theirown asic. Maybe you have pejaduce of some sort, dunno.Will let reader decide at their own dilligence and not speculation and competitors game.

### Reply 7:
Hey thanks for summing up all this.

### Reply 8:
No problem. It's due a weekly update tomorrow.

### Reply 9:
This company? appears to be a scam<link> in Germany. It is, apparently, a legal requirement in Germany to have a contact phone number and a tax file on business web sites.Company address is bogus.Phone conversations are apparently being done through VOIP and are routed from Hong Kong / China via the USA.Email responses are 6 to 8 hours out of sync with Euro times.

### Reply 10:
You may want to update the information for drillbit to state 'Uses Bitfury and Avalon chips'. As the current drillbit 8-board uses Bitfury chips, same with the current drillbit USB thumb.The next models are using Avalon v2 chips and it looks like they will come as a USB thumb, 8-chip board, and 16-chip board, but they aren't released yet. Honestly, I doubt many of the Avalon boards will be made, I'm pretty certain they will go either back to Bitfury (if avail) or whatever the next generation chip is/will be.

### Reply 11:
Oops my copy paste mistake, fixed now.

### Reply 12:
bitmine ontime: delayed

### Reply 13:
Understatement of the YearBFL Legitimate? Soft scam Thanks for the laugh

### Reply 14:
They're currently 'No (yet)', because not only are they late but they've also never delivered anything before this series.

### Reply 15:
BFL doesn't steal money directly, they do appear to eventually deliver stuff, just very very late, overpriced and shit.

### Reply 16:
then: no(delayed) the delivery date was 16 dec 13 + psu problems + heat problems ......and so on....... and here we are.... and you call that soft?? ha !!!

### Reply 17:
They have no to deliv<rest of thread truncated>
","[
  {
    ""hardware_name"": ""avalon clones"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fpga"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asic miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""lancelots"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners based on bitfury chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""drillbit 8-board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""drillbit USB thumb"",
    ""hardware_is_owned"": false
  }
]"
1508,"Date: 2013-09
Topic: [Open] Bitfury miner group buy + hosting (with ESCROW) 3/11.00 shares left
### Original post:
Now 3 / 11.00 shares remaining for next component (at current BTC rate shown in the OP)I've had a message from John K and he's going to try to place an order for both H-board #2 and H-board #3 in a few hours time (tomorrow morning US time). We're still slightly short on the BTC needed for H-board #3, so if anybody else is thinking of joining the group then the next few hours may be a good time to do it, as it will mean that we can place an order for both boards today. Let's see if we can break the 100 GH/s on order barrier today .

### Reply 1:
Id like to reserve one share,am currently in the office with no access to my wallet, however ill make payment at 6pm GMT this evening.

","[
  {
    ""hardware_name"": ""H-board #2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""H-board #3"",
    ""hardware_is_owned"": false
  }
]"
12597,"Date: 2013-09
Topic: CGWatcher 1.3.0, the GUI/monitor for CGMiner and BFGMiner to prevent downtime
### Original post:
In regard to the last couple comments, 1.3.0 is now available...Coins can now be created, edited, and modified in Coin Manager, accessible in Settings tab -> 'Other Tools...' button menu. You can also set to not remove individual coins, even if they drop from CoinChoose. (coins used in any of your profiles are already not removed)Also notifications are displayed when new coins are found on CoinChoose, in case you want to get a head start on mining. If you don't happen to see the notification, a log entry is also created. (you can turn this off in the Settings tab)Also profile switching should once again be skipped if the profile is already in use so the miner won't be restarted.I did make some minor changes that should hopefully improve API enabling, but if you still have this issue please send me the debug report created in the Tests tab.

### Reply 1:
I cannot run CGMiner (with CGWatcher version 1.2.9, 1.3.0) with the next record in the log file:with version 1.2.8.1 everything is working fine with the same settings

### Reply 2:
Can you download again and see if this problem still exists? The download should now be version 1.3.0.1 (still called <truncated> seems the method I'm using to check that the miner process is still running is saying that it isn't... but it only happens on some computers. Maybe it's a permission issue? There are now a few different methods for checking - the overkill approach - until I can pinpoint the exact problem. Oddly enough this particular code has not been changed in any recent versions.CGMiner is starting, right? CGWatcher is just not picking it up? (And is probably therefore closing it and trying again?)EDIT: Sorry, I just made another change. I noticed the ""MinerExecutable"" property in your log was incorrect, so that should now big fixed as well. The MD5 for this is <truncated>

### Reply 3:
Nothing has <truncated> 20:23:38] -- Begin CGWatcher v1.3.0.1 Process <truncated> 20:23:39] [d] WER DontShowUI value exists (1) and was set to 1 <truncated> 20:23:40] Active profile is <truncated> 20:23:40] No CGMiner instance found.[26.08.2013 20:23:40] Preparing to launch CGMiner in 10 <truncated> 20:23:41] Monitoring is turned on at 10 second <truncated> 20:23:44] User clicked Start Mining button. Attempting to start miner...[26.08.2013 20:23:44] [d] Miner.StartMining called. <truncated> <truncated> <truncated> <truncated> <truncated> (C:\My <truncated> """"C:\My <truncated> --api-listen --api-allow <truncated> Port=4028;Used <truncated> <truncated> (C:\My <truncated> 20:23:45] [d] <truncated> returns False. [First try, test process is nothing. ex: poecc c eaopo 4332 e oec.] <truncated> 20:23:45] [d] Waiting for CGMiner to initialize API. Process 4332 alive=False, <truncated> 20:23:46] [d] Watch for miner, expected process is 4332 (not alive).[26.08.2013 20:23:46] [d] CGMiner process is running using ProcessID 4332, expecting port 4028.[26.08.2013 20:23:47] [d] Finish wait for miner to start, process is 0 (not alive).[26.08.2013 20:23:47] [d] CGMiner process 0 not alive at Miner.S<rest of post truncated>

### Reply 4:
I'm sorry, that was a misunderstanding on my part. I didn't realize the miner actually wasn't starting (so the IsProcessAlive function was working properly). Please try 1.3.0.2, I think I have fixed this problem and a few others related to starting the miner. If this doesn't fix it, please try starting the miner using 1.3.0.2, then after it fails to start go to the Tests tab and click Create Debug Report, and email me the information displayed. It should tell me everything I would need to know to find what is going wrong.But I think 1.3.0.2 should fix it.

### Reply 5:
With 1.3.0.2 everything works fine. Thank you!

### Reply 6:
I have another small problem. When I press the button ""Disable device"", everything works fine, GPU is disabled. But when scheduler is switching profiles or miner restarts, device starts to work again, and I have to press the button again to disable the device. How can I disable the device for a long time, with using switching profiles? or it can be fixed?

### Reply 7:
Yeah that disable button applies only to the current miner process, as do any other changes in that tab. Allowing these changes to be saved to the config file (or arguments) is on the to-do list, but I'm not sure how soon I'll get to it.I would suggest instead creating a scheduled action to disable that GPU for whatever period of time you'd like, and when creating the action check the ""Persist through miner restarts..."" checkbox so it is re-applied if the miner is restarted. Hold your mouse over this checkbox to see more information on when it is or isn't re-applied.

### Reply 8:
Thanks for the answer. Yes, I created scheduled action ""Persist through miner restarts..."" ..but it don't work in BFGminer.. After the restart a disabled GPU running again! (about Cgminer<rest of thread truncated>
","[
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  }
]"
19456,"Date: 2014-06
Topic: trouble setting up solo mining with bitcoinqt and bfgminer.
### Original post:
Hi everyone,I have been trying to set up solo mining (just interested in learning how to hook up to the network) using bitcoinqt and bfgminer as advised, but I cant seem to quite get there even after searching all over the internet. I have successfully installed bitcoinqt and bfgminer, and I am pool mining with btcguild. I have made a bitcoin.conf file with the following in it and put it in the home/.bitcoin <truncated> I have no idea if bitcoinqt is running as a server when I open it...? When I try to run bfgminer in the terminal and enter the url - <link> username and password, it tells me ""pool set up failed"", also without asking me for a bitcoin address to direct mined bitcoins to.I must be doing something obvious wrong, but I just cant figure it out. I would be very grateful if somebody could point out what Im doing wrong.

### Reply 1:
the url you are using to connect to the pool that must be working and workers username and passwords must be registered on the same poolas you are using btcguild then you must enter this <truncated> as your stratum so your username and password can connect your miner on btcguild pool to start mining. so the mistake you are making is replace your localhost and port with this and try again it will start working the method which you have read to start ming is for eligius i think well try this and i hope it will be working.ping me on skype if you any questions x.c0der

","[
  {
    ""hardware_name"": ""bitcoinqt"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bfgminer"",
    ""hardware_is_owned"": true
  }
]"
2012,"Date: 2013-10
Topic: [CLOSED] BITFURY hosting - All 3 units ordered
### Original post:
Hi pajak666, do you have any updates on the currently state of this project?

### Reply 1:
Only updates I got are those that according to buzzdave post we should receive our units in early October, there will be probably two October batches. We are October batch #1

### Reply 2:
Update 09.08.2013 - Closed, all shares sold Update 09.08.2013 - Some of my IRL friends still didn't pay for their shares, so there are some more shares to buy. First come first served. Currently there are shares worth 4.17 BTC left for potential buyersUpdate 14.07.2013 - I start to accept paypal and skrill payments. If you will request chargeback or do any other weird thing with your payment, I will simply remove you from the shareholders list.To avoid mess and constant editing of original post I've decided to start new thread.previous thread is here:<link> WE ARE?We are Felipeo and pajak666 we run online store which is currently in beta stage.<link> Once you click FAQ button, you will see our company adress and that we are fully registered company in Poland.Also here is confirmed Felipeo ID by John K.Details of our current mining farm can be found here:<link> Punin is only shipping his Bitfury units only to Europe me and my friend Felipeo decided to expand our mining farm project.<link> aware to use only adress you control.In other words adress that you can send signed message with.Terms and Conditons are the same as for our current farm except we reserve 13% of hashing power.When<rest of post truncated>

### Reply 3:
hithere is my auction3 BTC for 4 shares<link> price!

### Reply 4:
Is it possible to still buy some shares ?Tnnx

### Reply 5:
Pmed ? Sorry for the noobness but what does this mean ? Send you a PM ?

### Reply 6:
Hi pajak666, any updates?gb

### Reply 7:
I second that. An update would be nice.

### Reply 8:
So...any update?

### Reply 9:
i see pajak666 is trying to sell a 120 GH bitfury miner: <link> was on the forum today saying he is 57 btc down: <link> an update would be nice please ...

### Reply 10:
HelloSorry for not providing any updates but as you know I was busy collecting email addresses from group buyers.At the moment I am working on automating payouts, that's why I need your email addresses (each participant will be able to log in to his own mining cabinet and make payouts when he want's to).I have also received tracking numbers, it should be delivered on monday according to UPS tracking system.Data center is set up, PSU's are waiting, so we are ready to go.Probably tommorow or at sunday each group buyer will receive email with further instructions and acces to his mining cabinet.How did I even missed all that new posts in this thread asking for updates...

### Reply 11:
thanks for update!

### Reply 12:
All shareholders should receive email or PM (if they did not provided valid email).Code:Dear Shareholders!Today we have received first mining unit.We start hashing today.Each of you will be able to menage his own payouts, either manually orin automated way.Please go to www.polmine.pl and ask for password reminder (use emailaddress which received this message).In your ""user statistics you should be able to see you share percentagefrom miner ""Bitcointalk"".Share percentage is calculated according to this spreadsheet:<link> will be distrubuted from master account automatically each timepool will find a block.Our current hashrate will be visible here:<link> can sort it by Mh/s or by name or just use ctrl+f to find our miner.Except that, either I will post graphs from miner statistics in Groupbuy thread or I will give login details to master account to someonetrusted (forum trusted) from our GB.If something is unclear please contact <truncated> hashing.Bitcoins FTW!

### Reply 13:
Good to hear that this GB has started mining

### Reply 14:
other two units are on my waythey left Finland @ fridayestimated delivery time is wednesday but I really hope to see it tommorow.

### Reply 15:
Great work with integrating GB payouts with polmine pool, very convenient. My first share is now visible :

### Reply 16:
Confirming as well. Good job, Pajak666.Here is to hoping that UPS won't be brutal with our remaining miners...

### Reply 17:
Reporting in!All miners are hashing:)Promised hashrate is meet, hope it will stay stabil.

### Reply 18:
Awesome work Pajak!

### Reply 19:
Just a heads-up to all members of this Group Buy. Please check your accounts at Polmine for correctness.My Polmine user name has been changed and I lost access to my miner shares and payout history.Whether it is an external hacking or insider job remains to be seen. I informed Polmine via PM to one of their forum admins. Waiting to hear anything back from them.FYI: I do not reuse passwords on different websites..EDIT: I got in touch with Polmine admins (via their forum). They confirm it was an internal reconfiguration, due to some account conflicts. Now my account bala<rest of thread truncated>
","[
  {
    ""hardware_name"": ""120 GH bitfury miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_is_owned"": true,
    ""hardware_name"": ""mining unit""
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  }
]"
12923,"Date: 2014-02
Topic: Envy miner V2
### Original post:
Hi,I'm happy to share with you the envy miner.Here is a preview: <link> you need any advice about this tool post below or PM me.Download link: <link>

### Reply 1:
Obvious virus is obvious - not envious.

### Reply 2:
Simply scan it... before say anything stupid...Hope that another guy will scan it, review it THEN post his mind...

### Reply 3:
I would recommend posting the full source code. Until then I and anyone else is going to recommend keeping this far off of any computer that has a digital currency wallet or credentials. It is simply not worth the risk.The same can and is said about any direct executable download posted on this forum.If you look through the forum you'll see plenty of posts just like yours. They usually get quickly deleted or buried in responses saying ""do not download this"".If you'd like to avoid this and get folks using your software, post the source code.

### Reply 4:
The problem is that i not have the source code.This program as not been coded by me.All that i can give you is a scan report.

### Reply 5:
Again - nobody is going to download this and I will continue to tell people not to.Just because a virus scanner doesn't pick it up doesn't mean it should be trusted. The author could easily be diverting the hashing to his own pool at a small percentage just by using the built in features in BFGMiner and cgminer.

### Reply 6:
I understand... Except that i don't have the source code then i can't modify it for redirect any percentage to my pool.Well, hope this share will make happy someone

### Reply 7:
Right, but whoever the author is could have done so. Nobody download anything you cannot look at the source for yourself. This could easily be stealing your hashrate or currency or any number of things.

","[
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""digital currency wallet"",
    ""hardware_is_owned"": true
  }
]"
17901,"Date: 2013-07
Topic: Cant login avalons
### Original post:
Try to reset <link>

### Reply 1:
Reset button did nothing.

### Reply 2:
Since its based on OpenWRT, have you tried doing a factory reset with the button? Hold down for 30 seconds, let it wipe all settings and start over new like it just came off the line. Then you can use the regular setup instructions from Avalon like you had just received it from them.

### Reply 3:
What are regular setup instructions?

### Reply 4:
Check out their Wiki. Gives all the pertinent information, as well as setup instructions.<link>

### Reply 5:
Got to telenet screen in CMD. Entered firstboot. Said erasing root. Went back to avalon login screen. Still asking for password.

","[
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": true
  }
]"
8976,"Date: 2015-03
Topic: GAW Miners
### Original post:
I don't know anything about them, but at govdeals.com they are auctioning off some stuff in Atlanta that includes some GAW miners.<link> tried to look up from the pics and these may be alt-coin miners. If so, please move to appropriate area. Thanks.

### Reply 1:
mostly for scrypt mining

","[
  {
    ""hardware_name"": ""GAW miners"",
    ""hardware_is_owned"": false
  }
]"
6401,"Date: 2013-09
Topic: KnCMiner order/shipment mess and unfairness
### Original post:
How come a company that talks a lot about fairness totally ignores the interests of most their customers?We, the majority who wasn't lucky to be in the right timezone, now have to pay for the few lucky ones got into 1-500 batch?It will be our money that should enable the mere production of ASIC devices, yet we will silently step aside to let the few gunshots reap the rewards. That's what KnCMiner call fair. I called them out with the email to give the exact estimation and placement of my order but didn't hear back. This is probably because KncMiner fair process cant be judged by a random dude from the > 500 order batch.

### Reply 1:
Just to clarify for you, You would have been in the 1-500 batch if you placed a pre-order during an approximately week long period in April after they first announced their miners (so it has nothing to do with timezone, but you're right you needed to be aware of their existence). What has happened now, is they are giving 7 days to those people with pre-orders to pay and confirm their spot in the queue. The possible unfairness is that some people placed pre-orders (at no cost) with no intention of every paying for an order and now those people are able to sell their pre-order slots at a premium. I actually don't think this is unfair, those people had the foresight to place a pre-order and now others want it so they can demand a premium. That is how a free market works. Full disclosure: I did buy a pre-order slot from someone and have placed an order with knc and I was happy to do it.

### Reply 2:
Also as someone else rightly pointed out in one of the other threads; KnC used those figures pertaining interest to coerce ORSoC on board.ORSoC wanted to be given an idea numbers of interest before agreeing to partner. Those guys and girls keen then helped KnC secure ORSoC as a partner. KnC were never going to attempt this without ORSoC on board, so there is fairness there.

### Reply 3:
Absolutely, you can't get a company like ORSoC to partner with you without demonstrating that there is a demand for the product you are developing and that is exactly what pre-orders do.I don't know why people are complaining about having to pay now. They accept credit cards via paypal, so if you are really concerned that they won't come through, that is one way to do it with minimal risk.I'll be very interested to hear the feedback after the open day tomorrow.

### Reply 4:
Yea I signed up for the newsletter on 4/09/2013 thinking ok I registered interest, HAD THEY POSTED ""Sign up here to get a place in line"" I would have but of course I thought to myself no need they aren't even taking money. ***Face Palm!***

### Reply 5:
It is still not fair when 2000 fund the development of something when 500 lucky ones get the reward.I didn't pay yet, so did not the majority, so hold on your breath you 500 gunshots, without us your order number is meaningless.I give KncMiner 6 days to let me know my order shipment estimated delivery date

### Reply 6:
I don't get the unfairness part.You could have reserved your place in april. The reservation list was open for a week.You can order now and probably be in the first 500 anyway.p.s. And I'm definitely in the wrong timezone.

### Reply 7:
Same here :-)

### Reply 8:
I registered in April on the site and for the newsletter, there was no word I should've taken the queue.Now they need to deal with their incompetence somehow, it's no good when thousands of suckers make 500 random dudes rich.Remember, without us your 500 spots are nothing

### Reply 9:
Random dudes that helped them secure a shit-hot FPGA/ASIC design house?! Bastards...

### Reply 10:
You do know the 500 are also paying customers right?

### Reply 11:
That's one way of going further - they do it like Avalon and only take money for the number of devices they gonna ship.Then do the next batch. I'm sure for the next batch the price will be lower because of the competition.I'm not paying till they clarify my shipment date.

### Reply 12:
So at the end of it, you're saying it's unfair that you didn't get into the first 500 orders? What happens if you order now and get #501?And why do you keep mentioning 2000 to fund the development and 500 lucky ones getting the rewards? According to the order page, all products will be delivered in september.

### Reply 13:
Okay, I'm hitting the hay;--Ok Daggeteo, just emailed me this. So anyone with any questions and concerns that want them asked tomorrow; PM him before 11am GMT+1!!!Make these Q's that concern everyone, or groups of people from particular countries, etc., not personal beef about every individual order...It's the best chance of clearing up whatever you're not happy about, confused or concerned about with them in person.i.e. Why can't we purchase as consumers? Why do we have to confirm we are a <truncated> Open Day Group PM Sent to: Bitcoinorama on: Today at 08:28:29 PM You have f<rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC devices"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pre-order slot"",
    ""hardware_is_owned"": true
  }
]"
5230,"Date: 2013-06
Topic: knc miners
### Original post:
Are they legit?Any idea of how many pre ordered units they have and what their daily production capacity will be?What are your thoughts about knc?

### Reply 1:
I just tried to recover my password (I had registered and reserved the Mars FPGA and the Jupiter ASIC) but I get the error message: ""User with current E-mail is not found.""I'm at work and don't have my password folder with me (yea, I'm still old school and write them down on paper).Has anyone else encountered this problem. I'll be emailing KNC in a minute.

### Reply 2:
Been on almost since the site launched. Never had a problem logging in.

### Reply 3:
Ive been considering this as well. Im stuck between purchasing shares of a miner (all i can afford) or waiting til asics become cheaper or some kind of fpga is made for scrypt.

### Reply 4:
what are you leaning toward?

### Reply 5:
Wait until an actual working product is online and demonstrated, then throw 50% of my BTC at it.

### Reply 6:
You should ask in the already existing thread: <link> also this thread: <link> the open-day they had earlier today. A few member of our community attended and will post videos and a compiled list of Q&As either today or tomorrow I'd guess.General impressions seem positive. I'm leaning more towards this being legit and will risk a purchase. But check out those threads and decide for yourself.

### Reply 7:
true but the price will be at minimum double what it is now. At least for shares. Gotta judge if it is worth the gamble I guess.

### Reply 8:
Thx Emmie!

### Reply 9:
Advantage1) We have seen them before on either photos or videos2) We have check their company background?3) You can pay by bitcoin and Paypal and Bank Wire4) Collect yourself or send to you by UPS5) The open day at their office is very positive6) Compares to bitfury and metabank/asic you can decide which is one is better and safer.

### Reply 10:
and Diff for a KNC batch 2 will be 4X compared to now; they might even triple prices.very tempting...but no prototype? what are chances of revamp?If it's ok to pay with CC thru Paypal, that extra protection is niceanybody know how much to ship to US? Is PSU included with Saturn ($3795 price)

### Reply 11:
My shipping is $102 to northeast USA.. no power supply with itSince I am a 1-500 I am considering letting anyone local to jump in and buy a unit or two for a small fee... not sure if worth the trouble though

### Reply 12:
thanks. so you are buying? CC or BTC?

### Reply 13:
CC via paypal with a 0% interest for a year card i just got from my mortgage bank (and 1% cashback goes to knock down principle)I may add a second Saturn before the end of the weekend.. still deciding

","[
  {
    ""hardware_name"": ""Mars FPGA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jupiter ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Saturn"",
    ""hardware_is_owned"": true
  }
]"
11649,"Date: 2011-10
Topic: How do I write this grep argument?
### Original post:
<truncated> HIGHexport SHUTDOWN_TEMPwhile truedo # read temp TEMP=`sensors|grep 'CPU Temp'|cut -d+ -f2|cut -d. -f1` if [ ""$TEMP"" -gt ""$HIGH"" ]; then echo ""High temp: $TEMP > $HIGH"" | wall sleep 2 else if [ ""$TEMP"" -gt ""$SHUTDOWN_TEMP"" ]; then echo ""To hot, shutting down in 30 sek.!"" | wall sleep 30 sudo shutdown now else echo temp OK: $TEMP sleep 5 fi fidoneHere is the output of my script for the below <truncated> -n 1 aticonfig <truncated> <truncated> the bold and underlined row in the temp script below I need to figure out how to get the temps out. Any help greatly appreciated - thanks!Uploaded with ImageShack.us

### Reply 1:
Thanks for your help so far. I am still having an issue though.When running the below I get user@system:~$ ./overheat[: 31: Illegal number:[: 31: Illegal number:temp OK:This is the script with added <truncated> HIGHexport SHUTDOWN_TEMPwhile truedo # read temp TEMP=`aticonfig --adapter=0 --od-gettemperature |grep Sensor |cut -d '-' -f2|cut -d 'C' -f3` if [ ""$TEMP"" -gt ""$HIGH"" ]; then echo ""High temp: $TEMP > $HIGH"" | wall sleep 2 else if [ ""$TEMP"" -gt ""$SHUTDOWN_TEMP"" ]; then echo ""To hot, shutting down in 30 sek.!"" | wall sleep 30 sudo shutdown now else echo temp OK: $TEMP sleep 5 fi fidone

### Reply 2:
Whoops, with f1 at the end I get the below....[: 31: Illegal number: 74.50[: 31: Illegal number: 74.50temp OK: 74.50If I change the first line to #!/bin/bash I get this..../overheat: line 15: [: 74.50 : integer expression expected./overheat: line 20: [: 74.50 : integer expression expectedtemp OK: 74.50I'm not sure what the difference is between sh and bash though.

### Reply 3:
Hello,I am not a great scripter, but from your screenshot it looks like you want this for multiple gpus?If so I think you need to add some for loop. I would do it like <truncated> 1 2 3 4 <truncated> HIGHexport SHUTDOWN_TEMPwhile truedofor card in $CARDS; do# read <truncated> aticonfig --adapter=$card --odgt |grep 'Sensor'|awk -F\ '{ print $5 }'|cut -d. -f1)if [ ""$TEMP"" -gt ""$HIGH"" ];then echo ""High temp: $TEMP > $HIGH"" | wall sleep 2else if [ ""$TEMP"" -gt ""$SHUTDOWN_TEMP"" ]; then echo ""To hot, shutting down in 30 sek.!"" | wall sleep 30 sudo shutdown -h now else echo temp OK: $TEMP sleep 5 fifidonedoneand yeah I think it should be shutdown -h now like the poster above me says

### Reply 4:
Excellent! That works perfectly.Is it possible to get the script to email me with an update of temps every hour and an email if the temperature exceeds high?Also how do I set this script to run automatically in the background and how to let me know if it's failed?Thanks a mill.

### Reply 5:
I was thinking, oh this is no problem just add one line so it sends an email.BUT this was a little bit more complicated. Because if the temp is at the $HIGH warning point, it sleeps 2 seconds and the goes on again. If I just put a mail command there it sends a mail every few seconds, probably not so good LOL.So I made a timestamp and check if it sent mail in the last 5 minutes(found that here: <link> how to make it send the ok temps every hour? I now made it log the tempsto a file, so you can make a cronjob that mails it to you every hour <truncated> I think this script had a bug, the shutdown stuff never executed becauseeven if you reach $SHUTDOWN_TEMP, the temp is higher then the $HIGH tempand so it never went into the else loop. Moved that shutdown stuff at the beginning now,so it gets checked first. But I probably created more bugs now haha You can start the script with a $ at the end, so it keeps running in the background.Maybe you have a startup script for your miners, then you can just add it at the <truncated> 1 2 3 4 <truncated> truedo for card in $CARDS; do # read temp TEMP=$(DISPLAY=:0 aticonfig --adapter=$card --odgt |grep 'Sensor'|awk -F\ '{ print $5 }'|cut -d. -f1) if<rest of post truncated>

### Reply 6:
Whoops, thanks for noticing that, of course you are right

### Reply 7:
I actually took out the high temp part and just left in the shutdown part. My room is air conditioned so if the temp is ever up to that then there's something seriously wrong and it should be shut down. My setup would not warrant clocking gpu's down for cooling.Also I used a little program called sendEmail, it allows you to send email from the command line with minimal setup (very basic). I put all my details into a second script and call it from the first. It will tell me that the temp has exceeded and it's shutting down - just so I'm aware!

### Reply 8:
Perhaps you should go to cgminer.It has control system over fan and engine clock (you can switch them or not) in order to set temperature under fixed target (by default 75C). You can define highest temp to stop mining (def. 85C) and highest temp to keep away (def. 95C).Give it a try. It's sticked in top ten.

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3216,"Date: 2014-03
Topic: [CLOSED] Ninja Group Buy #6 10TH 28nm Hosted - 250GH for 1.666btc [0/40]
### Original post:
This Group Buy is now officially closed. I will post the owners list later today.

### Reply 1:
Looks like I missed the boat. Will there be other options in the future to trade in GB 2-3 shares?

### Reply 2:
Sorry about the delay in processing the final list. The miners are showing up and that takes priority over the paperwork. I'm going to make the Saturday payout before processing the trade ins and will have the final list for this group buy up by close of day Saturday.We'll try to make other upgrade options happen in the future. It's difficult with the price of BTC being down so far currently.

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14519,"Date: 2011-10
Topic: What should I user to monitor all my miners from one location?
### Original post:
I'm using cgminer - is smartcoin the only option. Spent some time messing with it before to set it up. I'm not really that motivated to set it up at the moment. Anything simpler?I'll research smartcoin again now in the meantime....Thanks.

### Reply 1:
Bamt has been working great for me. the mgpumon utility is a wonderful way to see that everything is working at a glance. It's a snap to setup (under 10 minutes) and runs all of my machines.BAMT forum post -> <link>

### Reply 2:
We you on ars previously? - your setup is in my head from the pictures I have seen. Just wondering why you switched to this new pool - just had a quick browse to the site and it's looks like it's just starting off. It's hard to understand how it works though...

### Reply 3:
BAMT looks interesting but those munin plugins don't allow you to zoom in on the charts for a closer look. I find that annoying.

### Reply 4:
Yes, I was on ars previously. The DGM payout method is better because it is more like PPS in that the pool owner will cover some of the variance. Ars has also been having stability issues of late and that hurts profits.I never look at the charts. The features that are most valuable are monitoring over ssh with mgpumon, email notification of issues, being able to switch the entire farm over without changing every config and the ease of setup. It took me hours to setup a windows system. BAMT is setup in minutes.

### Reply 5:
Yeah ars has been having issues but I'm using their second server since today which has been fine. I'll have to look into this DGM method...What your saying isn't clear to me though? You say it's more like PPS because of the variance, yet, you say it's better without giving the reason?

### Reply 6:
Sorry for not being more clear.Straight PPS == the pool owner takes all of the variance riskPPLNS == you take all of the varianceSMPPS == when the pool is lucky, btc is held back for unlucky times but the pool does not share in the burden if it is very unlucky, miners must dig themselves out of the holeDGM == the variance is shared between the pool owner and miners<link> has also implemented poolserverj correctly so my stales are like .04% and they have a working implementation of merged mining which is extra profit.

### Reply 7:
I'm just trying out this yourbtc pool now, can you mine just bitcoin. I still don't know why I should care about namecoin.

### Reply 8:
Merged mining allows for you to do the same work but get paid more. Probably the one and only reason I care. yourbtc.net will automatically sell the nmc and convert it to btc for you anyway, so it's like mining bitcoin alone.

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24118,"Date: 2023-04
Topic: USB Bitcoin Miner Help
### Original post:
I have been tinkering with a USB miner consisting of 2 BM1387b chips. My question is, what firmware do I need in order for the PC to recognize the miner when in the USB port? I am assuming some type of bootloader.

### Reply 1:
Are you talking about Compact F USB miner?I think you don't need to flash this miner with firmware if it does not recognize it might be a driver issue.I heard that it needs zadig generic WinUSB driver to make this USB miner visible.You can find this driver under this thread below- <link>

### Reply 2:
Yes. I need to flash the miner with firmware but I'm not really sure which I need to use. I understand the the WinUSB drivers.

### Reply 3:
There is no 'firmware' to be flashed to the stick. It uses the cgminer program tha is ran on a PC. Any 'ux preferred but yes there is a Windows version as well. That thread will cover what you need to know.

### Reply 4:
Hi OP !Here you will find all the necessary steps to be able to install and use properly your CompacF with Windows :<link> thread will help you too I guess : <link> just need to install CGminer to run it.Kano did a great job here if you need more troubleshooting processes : <link>

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5353,"Date: 2013-06
Topic: Is it possible to find schemes in Gerber format for 32 or 64 Avalon ASICs?
### Original post:
Is it possible to find open-source schemes in Gerber format of 32- or 64-Avalon ASIC chips miners ?

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16315,"Date: 2022-08
Topic: Does it sound right? Estimating the hashrate of CPU likely used to Mine Genesis
### Original post:
I am trying to estimate the cost of mining Genesis block for a research paper and wish to narrow down variables to the best i can. Here is how i got the ~8228 h/s hashrate.1- I took the difference between the block-header epoch timestamp of Genesis and block#1 which turned out to be 506,360 seconds (i.e 5.86 days).2- The nonce of Genesis Block is 2083236893 which means that satoshi proved the work on genesis block by performing 4,166,473,786 sha-256 hashing operations (2,083,236,893 nonce increments and ""Double"" sha 256 operations per nonce).Hoping the math is correct, it means that the device used for mining Genesis block performed at 8228 h/s hashrate (4,166,473,786 hashing operations / 506,360 seconds) .Is the above calculated hashrate close to the one you'd expect from CPU mining back in 2009? any notes on the math used here?

### Reply 1:
Interesting question!A quick web search reveals that people in 2011 were doing 65kHash/s on a single thread. Disconnected from Bitcoin Core though; just a simple standalone C program doing SHA256 hashes. <link> very well possible that in 2008, hashrate was quite a bit lower, maybe 10kHash/s on similar hardware; of course, satoshi may have used a laptop giving lower numbers.Your calculation does assume a bunch of things, though:[1] The timestamps are 100% correct. Problem:[2] He started hashing with nonce=0 and incremented by 1. Problem: It's not required nor enforced to do it like that. You could also generate a random number every time or maybe after 1000 iterations and count up from there.That being said, it was the very first version of Bitcoin Core and both assumptions may very well have held true back then. I'm just not 100% sure, since by today things are a lot different; timestamps are even used as a kind of 'extra nonce' and deliberately time-shifted. Just make sure since you are doing this for a research paper, that your assumptions are indeed true.PS: I'd recommend moving this to 'Development & Technical Discussion'. Even though the topic is about mining, this board mostl<rest of post truncated>

### Reply 2:
It adds up, especially since Athlons and Core 2's did not have <truncated> SHA256 instructions to take advantage of, so it was most likely all coded in software (C specifically, not any assembly or even __asm__ directives).

### Reply 3:
Thanks a lot n0nce.I didn't know about the median timestamp. With that said though, and specially for the case of genesis block, would you consider those 2 factors to be almost insignificant knowing that satoshi mined genesis Block alone (no competing nodes)? Note: Am new on here, is there a way I can move the topic to ""Development & Technical Discussion"" or shall I just delete and re-post?One last thing, nonce-search tweaking/algorithm is one of the topics am very interested in, but couldn't find any good enough sources to put some algorithms to test on a Mac just for fun. any recommendation?I really appreciate the time you've taken and I learned something interesting today!

### Reply 4:
The timestamp can be adjusted forwards or backwards to the miner's will, no matter whether there is competition or not. Same with the way the nonce is selected. But I don't know why he would have done something like that. Most likely, your assumptions hold true. I'm also not aware, when exactly miners started playing with the timestamp as secondary nonce.This would be a question probably best answered by long-time miners from the Mining board, like philipma1957 and NotFuzzyWarm.On most boards, you can do it yourself just on the bottom left corner.There's even a 'Lesson' about it <link> can quickly find topics using the <link> search tool, by the way. Much better than forum search.Despite my name, I'm not an expert on nonce-search tweaking. I do understand what you're trying to do; personally I'd mostly stick to the maths and maybe write an isolated example to gather some benchmarks. But in theory, mining is a completely random process and you should not get any better or worse results in the long run whether you just count up or do something more complex.

### Reply 5:
While it may have been able to be adjusted to any value initially, the genesis block clearly states the earliest date it could have been generated.Read the coinbase sig.Alas, bitcoin rules (which means all mining) sets limits on the value it can have as stated above.As I regularly state when the subject of the 'block timestamp' comes up, the stamp is not 'the time the block was mined'It is either when the pool sent the work to the miner or what it was adjusted to by mining code (or the pool).But adjusting the timestamp is no longer required with stratum, and all pools other than those setup by n00bs who don't know what they are doing, use stratum.Stratum was designed for this reason, to put extra nonces in the coinbase sig, not use the timestamp.This u<rest of thread truncated>
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8481,"Date: 2014-10
Topic: Antminer S3 Keeps resetting itself
### Original post:
Good Morning GuysI wish my first post wasn't a ""problem"" post but like so many, I found your site looking for some rhyme or reason as to the behaviour of my nice new Antminer S3+ (batch 9)Set it up last night and all was good - hashing away at about 430-450 Gh/s as expected. Came to look at it this morning and is seems to be cuttin out all together, suddenly coming back to life as the right speed then 10 minutes later dropping off to zero before restarting again. This is after about 12 hours continuous running if that helps?Now, I also have an Antminer S1 running and another S3 running elsewhere, both of which are behaving as they should which rules out the mining pool. I know the configuration within the unit must be right or it wouldn't be mining at all which again, rules that out.I have this set up with an Aerocool Intergrator 600W +80W PSU (<link> using the daisy chained connector. Could this be causing an abnormal load on the PSU? Would it work better if the individual plugs were used?I am also hardwired into an Ethernet Hub so no wireless connection issues.Can anyone shed any light on this as I need to get this running properly obviously?Thanks

### Reply 1:
PSU should be ok as its a single rail so should have no issues no matter if your using one or two cables. I am wondering what the temp on the miner is getting up to? You can see the temp on the status page. You would be better to post this on the S3 thread than start a new one. <link>

### Reply 2:
Thanks for the reply - I'm in work at the moment so can't interrogate the unit but I'll try that when I get back. I have purposefully positioned it so it has a clear air path all around (I work in building services so understand that in order to maximise cooling, there needs to be open air around all sides, similar to a water to air heat exhanger).It is just baffling me why it would effectively shut off, restart and run fine for 10 minutes before repeating the process.I'll copy this into the S3 thread (didn't know it existed - oops - newbie alert )

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4244,"Date: 2012-12
Topic: ASIC where are they?
### Original post:
if i recall correctoy, late october was the date ...still waiting...

### Reply 1:
Like a broken record in these forums. Can we please move on?

### Reply 2:
I have a bet that BFL won't ship ASICS to end users before 1 December. Despite having a BFL order I hope they don't disappoint me and ship something in November.

### Reply 3:
Like a broken record in these forums: People always forget to mention the year.I assume you mean 1 December 2013? Or 2014?

### Reply 4:
It's a SCAM! Your Captain Obvious.

### Reply 5:
I know, it's getting so that I don't even want to click on any new threads in Hardware/Custom Hardware. For god sakes people, use the search function and see that there's a few thousand threads already on this, you don't need to start a new one.

### Reply 6:
You really believe anyone asking now when asic will come, like the OP, is not a troll? The hardware/custom hardware sections here are safe troll havens.

### Reply 7:
Unless you whine to the mods

### Reply 8:
They are indeed, SLok, they are indeed. Only it's not the people asking questions who are the trolls.

### Reply 9:
Nooooo, my secret identity.

### Reply 10:
He doesn't care, nor is he in a hurry, quoting OP, ""I will keep mining, unlike others, I see the big picture and I'm in for the long run... so if I make 1 btc or 20 today, I don't really care...""That's the standard mail that is sent to the ""shipping department"", which is still non-existent btw, since the volunteers for that are not in yet. Would be useless, since even the board in still in development state, so there is nothing to assemble. For what it is worth, btcfpga or bfl, they both have my sympathy, the one that can deliver new orders faster or even off-the-shelf first, gets my next order(s).

### Reply 11:
As said in other thread, this is only a proof that you payment is confirmed (if paid with BTC), some month after, , btw BFL even haven't done anything like this.Regards

### Reply 12:
When you will get that asic device at your door, than it will be delivered, now its just confirmation of order

### Reply 13:
Actually, BFL sent me order- and payment confirmations at the very minute they were received, so once again you are just talking shit.

### Reply 14:
Yeah, the BFL process wasn't a clusterfuck that needed to be cleaned up after the fact. When you pre-ordered your BFL item, you got an email around the same time... so you got the equivalent letter from BFL when you put in your order.

### Reply 15:
Made me laugh. In answer to Ops query. They are coming

### Reply 16:
Is it just me or does the driver in that picture look like a priest who has a small boy in the back seat drinking a beer?

### Reply 17:
I thought it was Steve Jobs... 0_o

### Reply 18:
i saw Steve Jobs too

### Reply 19:
It is. The public is holding an iDevice. It must have been around the time of the iPhone 4s announcement.

### Reply 20:
What's at the end of the road I wonder. It looks pretty desolate out there.

### Reply 21:
Yes, we're there, almost...

### Reply 22:
I don't have any pre order, so I shouldn't interfere but would there not be a point in telling others not to order anything from BFL or claiming that they'll never market a product, if you are sure you get one yourself so you will have a better chance of recouping your investment as less ASIC's are sold because of slander?

### Reply 23:
Excellent point Luno. I think the haters fall into two camps, 1. Those that didn't order early when they had the chance and are now kicking themselves.2. As you said, those who did order and are trying to sow misinformation for their own gain.

### Reply 24:
3. The ones that didn't pre order because they had decided for themselves that there is not enough evidence shown (working prototype, pictures, etc...). Desperately trying to talk sense into ""newbies"" not wasting money on an at the moment non existent unicorn?4. Trolls in general

### Reply 25:
The level of desperation is way too high to have stemmed from a concern about the welfare of others.

### Reply 26:
I stopped giving a crap for a couple weeks but now I'm back and now BFL's website has actual pictures of the finished product. That means they have some chips, are assembling and testing some, and are obviously close to shipping. They might even be packaging right now. Their original statement that they later buried was that they were realistically going to ship right before Christmas. Then they said October so everyone placed their pre-orders with their company instead of their competition. Then they backpedaled and kept saying ""well, we don't know though"" and ""it might be later"" and tada, we're back at reality where we started from.Also, the Steve Jobs in that cartoon would be where he's going already if he wasn't using Apple Maps.

### Reply 27:
Welcome back to giving a crap. Tough to be sure of anything with this company, but last I heard they were awaiting chips and expected them ne<rest of thread truncated>
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17033,"Date: 2012-02
Topic: Looking for 2nd opinions
### Original post:
I'm looking for some second opinions about the longevity of my setup. I have 3x6970 in one rig and another 1x5870 hashing away.Current settings using cgminer on the 6970s are:950/685 (mem is lowest I can get without flashing BIOS)V=1.175 (can't adjust in cgminer or afterburner)I = 9Fan = 85% on 2 cards, 95% on the hottest cardTemp = 79C on Hottest card, 70C on coolest.Powertune = 10@ 425 m/hash eachCurrent settings using cgminer on the 5870 are:980/350V = 1.130I=9Fan = 40%Temp = 53CPowertune = 0 (Can't adjust for this card on cgminer)@405 m/hashMy questions:1) Is 950 core or 79C too much/high for the 6970?2) Is 980 core (stock 850) too high for the 5870?3) Are the fan speeds on the 6970s an issue? They are HIS 6970s.4) Most importantly, does an increased core clock affect the longevity of a card independent of temperature and voltage? I assume 53C and 40% fan to be no concern, but does a +130mhz overclock present a problem for longevity in and of itself?I'd really not like my card warranties to be voided because I leave some burns somewhere or something.

### Reply 1:
All by itself, the clock does not influence the longevity in any way.However, power consumption and dissipation rise linearly along with clock speed and those two factors are the chip killers when the microscopically small traces inside the chip ""burn up"" (actually, it's electromigration that kills them - a process where electric current displaces molecules of the conductor it's running through).Load (heat and current) also leads to degradation of transistors inside the chip to the point where they become unstable at speeds they used to run at without any issues. If your card suddenly starts crashing where it used to run stably for months dropping the clocks is the only solution.95% fan speed (or even 85%) is something you should worry about. When manufacturers cut corners, fan quality goes first. Chances are that when purchasing inexpensive 10$ case fans you are getting much higher quality devices than the ones mounted on your 300$ card...70..79C is not a bad temperature range for a battery of overclocked 6970s locked in a PC case. If it's an open rig, try increasing the distance between cards or pointing more airflow directly at them.It's a bloody damned shame that your manufture<rest of post truncated>

### Reply 2:
Thanks for the input.The voltage is strange on the 6970s -- I can't adjust voltage on any of the cards, but one is at 1.150 and the other two are at 1.175. Go figure.They are all locked in the case but I'm likely going to open the case and direct a desktop fan towards it.

### Reply 3:
some inspiration for your open air setup joint, one of the rigs in there is a 1x5870 it's running at 55-60 *c

### Reply 4:
has anyone tried running rigs inside a walk in freezer?

### Reply 5:
that's going to have a tendancy to cause condensation and other nasty things

### Reply 6:
Why do people always get this shit backwards? If you place something cold in a warm/hot environment, the air near the cold thing gets supersaturated with water vapor and condenses on the surface. If you place something hot in a cold environment, the air near the hot thing will accept a much larger amount of water vapor compared to the environment and will NEVER condense. The worst you'll see in this setup is fog in the air.

### Reply 7:
A mining rig has mulitple temperatures throughout it's going to cause ""fog"" near the exhaust and condensation on it's cooler components. but feel free to test this and report back with video

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5347,"Date: 2013-06
Topic: Bitsyncom, can you please hire some employees, answer emails, and tickets?
### Original post:
I second this even though avalon heard me now... its really hard to have a problem that puts pressure on your shoulder, in my case the bitcoins of others, and i cant do anything.Some support employees should help very much.I even know one in forum that paid for 10k chips. The transaction didnt go through because the payment waited for confirmations longer than 8 hours... now the order is gone and the bitcoins too because avalon cant be reached... thats not how it should run...

### Reply 1:
Which country is it ?

### Reply 2:
@OP: Don't be born in that country. Problem solved.

### Reply 3:
i'm guessing italy?

### Reply 4:
I wasn't, I just happen to live here.Some corrupt SEA nation.

### Reply 5:
I have nothing bad to say about Avalon personally.But it does seem to me for the great amount of business they are doing, and the great products they have, a little bit would go a long way. I'm sure in China it would be fairly inexpensive to hire a min wage dedicated secretary or customer service person to assist with running the day-to-day stuff, while Yifu and the other BTC champions can be freed up to do more important stuff. Even just having a full-time employee in this sort of role doing this one day a week would really help the situation out massively.

### Reply 6:
If you don't know the name of the country you are in, it might be hard for Avalon to deliver your unit regardless of which carrier they use.

### Reply 7:
I think it's the only way forward. They have the money, they are making a huge mark up on their bulk chips.In his recent talk at Bitcoin 2013 he admitted the team hate the customer service aspect and want to concentrate on development and engineering, that's what motivates them.That's understandable, I'd be like that too, but you can't afford to loose sight of the fact if your customers are unhappy, you don't get the funding for development and it's such an easy fix to to hire someone to make your life more efficient and rewarding and keep your customer base happy as well.

### Reply 8:
Actually, to be fair, you are probably 100% correct. My comment revolved around an ideal world theory, not real world limitations...I keep seeing them as a bunch of undeniably smart rogue students, but to be fair what they've achieved this far is nothing short of miraculous and takes a huge amount of organisational skills!They could easily sell out to someone local and outside the community if they so wished. Props to them for staying true to the cause...

### Reply 9:
By right never and never used EMS to send your boxes or documents out of china, it is control by and belongs to the government. Always used DHL/Fedex or UPS to get your goods send out.Avalon customer service needs to be improved. I wonder why can't they get anyone or workers in to help? Ngzhang or yifu sure hasfamilies or relatives in china, hire these people and is common knowledge that factories bosses always prefer to hire their own family members to work for them and getting 1 or 2 person in the help desk should not be an issue. I think a lot of this emails coming in are not open or even read? because they are too busy with R&D and production. I would say butterfly service is also terrible.

### Reply 10:
Butterfly need to employ an entire army to man their customer services, they have an exponentially greater volume of problems to deal with!!

### Reply 11:
Fuck that.They can EASILY get a trusted virtual assistant from India for basically no money at all.That is really easy. And if they wanted, they'd just ask on THIS FORUM to get someone.

### Reply 12:
I would have bought a Batch 2 Avalon, if they had put a decent share of Batch 1s in consumers' hands before throwing open the next ordering process. BitSyncom's inconsistent and downright snippy forum presence wasn't exactly reassuring. When you do honest work in a den of thieves, you really need to show your hand.

### Reply 13:
To put things in perspective, don't forget that they had to open Batch #2 pre-orders way ahead of schedule because they ran out of funding to complete the production of Batch #1It was sink or swim and BitSyncom was under a lot of stress. On the other hand, the Batch #2 customers saved Avalons ass and a bit more feedback and information on order processing would be appreciated....

### Reply 14:
Its not a problem about answering emails, the thing is they just don't give a shit about you or your orders. Feel bad for you guys, but these faggots like BFL and Avalon won't exist anymore now that real companies are coming out with hardware.

### Reply 15:
UPDATE:I received a response to my email and/or support ticket. My account has a new update that updated my shipping from EMS to a DHL tracking number (Sent as an update to my account/order). They responded to my request in <48 hours or so. So apparently they do read them, but they must just not personally re<rest of thread truncated>
","[
  {
    ""hardware_name"": ""10k chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Batch 2 Avalon"",
    ""hardware_is_owned"": false
  }
]"
18750,"Date: 2014-02
Topic: Batch file for mining
### Original post:
Hi,This is a method to do mine hopping the way you want on Windows (tested on Windows 7 and above).The question is: i want to mine on pool x for so much time, solo for this much, on pool y for some other time and then cycle again.There problem is evident if you have only 1 hardware device, but if you have more than one device you can use Multiminer to tell each device what to mine. This kind of gives half a solution, because if you have a 10 GHs unit and a 100 GHs, you cannot split it 50-50. Also, some might say that running one device for a long period of time is/isn't equivalent to running one faster device for a shorter period of time, so the total number of lotto tickets is the same, as with time the later tickets might have less chance (point of view).Anyway, here is the code:1. Download cgminer and put it in a folder of its own, say ""cgminer-3.12.2""2. Create a batch file inside that folder, call it whatever.bat (.bat makes it an executable batch file)3. Put the code below in the file (please read it as you need to personalize it to your <truncated> cgminer.exe -o 127.0.0.1:nnn -u username -p passwordtimeout /t 120 /nobreaktaskkill /im cgminer.exe /f /s localhost /u yourwindow<rest of post truncated>

### Reply 1:
Why, Just use --load-balance and feed both pools simultaneously, you can even change the balance between the pools so one receives more shares than the other.

### Reply 2:
Hi,Thank for the feedback. With load balance and a number of miners (more than 10), 24 hrs of mining on ghash.io gave 50% duplicates. The equipment keeps jumping from one pool to another. It did not work for me...More precisely, the way i used --load-balance was by downloading Multiminer's source code from github and making some tweaks. That said, it relies on how the parameter was implemented in the software, I have not tested it myself directly in command line, just relied on feedback from the experience. I might give it a try but atm it feels better to have 100% all in one lump on one load. It's really a matter of personal decision, consider the two positions:One: i have a couple of USB miners not using anymore, I'm running them solo mining bitcoin, who knows, I might get lucky, I know the odds are probably I will find it in 800 days, and that is assuming the difficulty does not increase in 800 days, but it is better than having them making cents on cex.io.Two: if the odds are too low to win, then it is better to have them making cents on cex.io (no ad intended) rather than making nothing in solo.So the idea is, even if --load-balance was to work properly, some might not think i<rest of post truncated>

### Reply 3:
Steer clear of ghash.io it is not your friendResearch the difference between luck and varianceHappy mining

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    ""hardware_name"": ""100 GHs"",
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  },
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    ""hardware_name"": ""USB miners"",
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9573,"Date: 2015-12
Topic: Overclock the Avalon6 with a DPS-1200FB Made Simple
### Original post:
BAM - 3800 ghsSecond miner from the bottom- Here it is later on:

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    ""hardware_name"": ""DPS-1200FB"",
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17566,"Date: 2013-04
Topic: Quick noob question, Mining rig setup for 3-4 HD7970 or 7870
### Original post:
hi guys, i want to build 2-3 rigs with 3 or 4 graphic cards each.i asked my hardware store for a offer but they totally misunderstood me.which is the best CPU for those cards? it should be just enough.2GB ram is also fine right?i dont need a DVD-drive if i use Hubutu on a stick right?which would be the best motherboard?and i guess i need 1250W ?thanks a lot

### Reply 1:
I bought very cheap AMD Sempron CPUs. If you plan to have uses other than mining, you may want to upgrade a bit. I didn't2 GB RAM is fine if you just want the machine for mining. I have many machines with just 2 GB and they hash wellThere are several MB choices. I have personally had good luck with the ASRock 970 Extreme 4, as have others on the forum. At $99, it's decently priced for the PCIx slots it has too.I bought 1200 watt PSUs for 3 x 7970s machines they all handle the load fine. I would say no on the DVD drive. Even if you did need one to install Windows, etc. you wouldn't need to keep it attached once that's done.Cooling is something you want to keep in mind. 3 or 4 7970s in any case are going to run hot, probably very hot. Almost all of my machines are completely opened (custom frames) and have at least one PCIx-extender to raise the middle card up to allow all 3 cards to get better cooling. At about $15 (last I checked) these are worth finding and investing in on the web.

### Reply 2:
Hey I was wondering if someone could show me an image showing a mining rig with one of these PCI-e extenders installed?Just want to see how its all set up to give improved cooling. Having trouble visualizing it.

### Reply 3:
I think this is still very helpful. There are of course newer GPU's but everything else should be good.<link>

### Reply 4:
Check out the ""pics of your mining rigs"" thread: <link> are several example pics on the most recent pages as of this post: 107 & 108, and I'm sure you can find many more further back in that same thread.

### Reply 5:
Any CPU is fineYou don't need an optical drive, only if installing OS from one1250 Seasonic or Corsair is fine for 4 or even 5 cards

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    ""hardware_name"": ""2 GB RAM"",
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    ""hardware_name"": ""ASRock 970 Extreme 4"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""1200 watt PSUs"",
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    ""hardware_name"": ""PCIx-extender"",
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    ""hardware_name"": ""1250 Seasonic or Corsair"",
    ""hardware_is_owned"": false
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]"
16013,"Date: 2018-09
Topic: How to know if you are a Mining addict..Well..when you fry your service entrance
### Original post:
Just one of the risks of sucking lots of juice... Was quite the fireworks show...plenty of sparks and pops and a cute little fire on the roof of the porchHats off to Hydro Quebec...back up mining in under 3 hours.Mind you, if they would have given me the damn upgrade which I've been waiting for for 4 months, this would not have happened.or so I like to tell myself.

### Reply 1:
May have been a nice wake up for them should you have lost your house.

","[
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10359,"Date: 2017-07
Topic: Avalon 6 hardware configuration help
### Original post:
Hi guys new to this forum so hopefully im posting in the correct thread. I have (4) Avalon 6's and i want to know if powering 2 off my breakout board that has 8 pci-e 6 pin ports on it is ok? Also want to know about daisy chaining them off one controller. if i do that am i basically connecting the avalon miners together through the 2 jacks that are available on the back of them?Thanks in advance.

### Reply 1:
That should work fine two per break out board with 8 pci 6 pin plugs on the breakout boards ... what's the PSU ? ... use small fans some thing like this <link> those fans are awesome, i have a few after I discovered them. Blowing on the break out boards or the plugs might over heat and burn out ( and that can be real bad ).....So Watch those plugs at first to make sure they only get Luke warm to the touch any warmer might be bad over time and you might burn down everything .... if you use two miners per 2400 watt server PSU, which i hope you are, run that on a 220/240v 30/40 amp line not a 110/120v 15/20 amp line bad idea puling that much power off a 110/120 line .You can daisy chain up to 6 devices PER AUC, it's kind of unlimited PER RPI, the AUC is the real controller inside the the miner that runs it all ...so that's 6 per Avalon 6 .. if that makes sense ...AUC: Each AUC can connect up to 6 devices.<link> I still have one A6, I use from time to time ( I'm a hobby miner an use GPUs and Script miners, too) ..and thinking of buying one of the A741 aka A7, I'll keep calling it till they actually change to the name to some thing other then Avalon 741 aka A7 etc ...

","[
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    ""hardware_name"": ""breakout board"",
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    ""hardware_name"": ""PCI-E 6 pin ports"",
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""small fans"",
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  {
    ""hardware_name"": ""2400 watt server PSU"",
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  },
  {
    ""hardware_name"": ""AUC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 741 aka A7"",
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]"
7934,"Date: 2014-06
Topic: btcgarden-AM-v1 sold out! New coming will be 21st June! Only $1.19/GHs. 1.045w/G
### Original post:
What's the discount code to get that price?

### Reply 1:
We didn't setup discount code for miner. But there is big buyer group which can have good price as we selling here.If anyone intends to place big order on our website, we can set you to that group.

### Reply 2:
Shipment for customers placed order will be started today. We are doing as fast as we can. Will provide you tracking number as soon as available. Due to there are many orders to ship that will be take around 2 days to finish all of them in order (ordered first ship first).Thank you for your patient. Stay tuned . We will come back shortly.

","[
  {
    ""hardware_name"": ""btcgarden-AM-v1"",
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]"
2786,"Date: 2014-01
Topic: [OPEN&HASHING NOW]Doc's Instant Hash R1 - 12/18 shares available 0.1BTC=10GH/s
### Original post:
Got the tx and have your payout on the list!

### Reply 1:
Hi,just for curiosity which miner hardware do you have?just thinking about the electricity costs

### Reply 2:
Glad to see this is working out for you!!Ill be down for a few shares when I get my next mining payout.

### Reply 3:
This is currently running on a combination of BFL and ASICMiner hardware.I'm thinking after Chinese New Year they will be replaced by an Antminer S1 (same hash rate, lower power usage). If/when that happens, the hosting fees will be adjusted to account for lower electricity costs (though that's not the entirety of the hosting fee, it's definitely a significant part).

### Reply 4:
Quick update:Website to track this round and give estimated payouts should be up Monday!

### Reply 5:
Sorry to ask this question but..... are you on drugs?

### Reply 6:
Hi, drmadison!I'm interested in buying 9 of your shares, is that available?

### Reply 7:
Am I on drugs? Not last I checked...why haha

### Reply 8:
Yes 9 shares are still available. I'm hopping on a plane I'll get everything updated when I land.

### Reply 9:
Okay, my coins ready for transfer.Let me know, when you will be ready.

### Reply 10:
Go ahead and transfer and post the tx id and your payout address here. I need that to update the payout spreadsheet.

### Reply 11:
9 sharesTransaction ID: <truncated> address: <truncated>

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    ""hardware_name"": ""ASICMiner"",
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  },
  {
    ""hardware_name"": ""Antminer S1"",
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11558,"Date: 2011-07
Topic: Best miner in windows for 6950....
### Original post:
I see many here using phoenix, and a bunch of the other ones but the one that has worked best for my 6950 is GUIminer w/ these settings:New Miner -> OpenCL -> parameters: -v -w128 f1My card cant be unlocked and I have the core OC'd to 890, default voltage. RAM is at 150mhz.It produces around 363mh/secIve tried phoenix, w/ the different kernels but it gets nowhere near that many mh/s on my card.Im running the 11.7 preview drivers for now.Please post any other miners I should try and the parameters.Thanks

### Reply 1:
im running the same miner and settings when im not using my pc, when using it i use phoenix with a aggression=6 for around 320 Mhs while watching videos. I have my sapphire OC'd to 900 and ram at default and get 365mhs (with the miner you have listed above, plus my backup pool settings.) and using 11.6 drivers

### Reply 2:
I think the only way you can get higher is to use the shader unlock mod which my non-reference sapphire can't use. I have read some of these 6950's will OC to 1000mhz but to me doesnt seem like the risk is worth the reward to OC that much.

### Reply 3:
What risk? If you can keep the card cool enough, and it runs stable, what am I missing?

### Reply 4:
Exactly, Id rather only OC it 12.5% and have it run nice and cool than push the card to its limit, make it run alot hotter and possably shorten the life span for just a couple more mhs. Therefore the reward of maybe another 10-15 mhs, to me isn't worth the risk of cutting months or years off the lifespan of the card.

### Reply 5:
If you have to balance your power consumption...these cards could potentially eat way more power when starting to modify the voltage than whats worth in mh/s output.Also, thanks guys...so Im runnin a pretty good hashrate for my card clock and configuration?

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    ""hardware_name"": ""sapphire"",
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    ""hardware_name"": ""non-reference sapphire"",
    ""hardware_is_owned"": true
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14697,"Date: 2013-05
Topic: Question about pooled mining and transaction fees
### Original post:
I was under the impression that the transaction fees were also awarded to the miners. So, on the large pools (I use slush, for instance), do they just pocket the transaction fees in addition to the btc ""fee"" they charge for the block generation?What's the current transaction fee (on average) per block? Is this something to start being concerned about?

### Reply 1:
Some pools forward tx fees, most keep it.Currently tx fees revolve around 0.05 BTC which is 0.1%, I don't think they're something to worry about now. They definitely will be in the future.

### Reply 2:
sorry MeniTXN fees are increasing <truncated> is regularly receiving TXN fees between 0.1 and 0.6 BTC per block, yesterday we had a good one at 0.8935006BTC of TXN fees6 of the 24 pools listed here <link> pay out txn fees as shown on <link> fees are paying more than the Namecoin component of Merged mining on Ozcoin, I think they are well worth worrying about

### Reply 3:
TX fees are only going to get bigger, but only as Bitcoin adoption increases, not as the hash speeds increase, correct?

### Reply 4:
yes transaction fees are paid by people using Bitcoin and doing transactions, so the economy needs to expand.also Gavin recently released a patch so pools could prioritise txn fees on fee amount - something Bitcoin users had been asking for, this is partly a result of satoshidice <truncated> /hashrate is verifying the transactions and has nothing to do with the amount of txn fees

### Reply 5:
Im curious which pools keep the tx fees and which distribute them, also for LTC Im curious about the same question as there is a .1 fee for ALL transactions.

### Reply 6:
<link> is a comprehensive list of Bitcoin mining pools including who does and doesn't payout txn feesre litecoin - the alt-currency subforum is where you should be asking

### Reply 7:
Yeah Meni # are a little old. Avg tx fees are closer to 0.20 per block now. That is up from ~0.04 per block at the beginning of the year. Still small but they will be increasingly important. Say tx volume doubles and avg fee also doubles and this is after the subsidy cut goes into effect. That would make fees go from ~0.4% to ~3.0% of total compensation.

",[]
21499,"Date: 2017-08
Topic: Thermometer auto kill switch ?
### Original post:
Hello,I want to set up an auto switch if the temperature is too high for safety. The idea is to switch off the miners if the temperature is over xx.How can I do this ? Also what would be the best setting to kill off the miners ? I have 35 L3+ miners on the way.Best regards,

### Reply 1:
There are digital thermometer ""AC line switches"" that will handle 15 amps - you could set one of these up on the input of your power supply.I don't recommend it though - IMO you'd be better off just reducing the clock on your miner to keep it cool as needed.Also, doesn't the L3+ have auto-adjust software like the S9 or the Spondoolies SP20 that auto-tunes it for you based on temp and stuff?

### Reply 2:
I'm not sure as I haven't received the miners yet, thanks for your answer.

### Reply 3:
You can make it with Arduino.

### Reply 4:
A managed PDU (fancy power strip) can have temperature and humidity sensors as well as providing access to switching off individual plugs to cycle the miner. You can write a small script to read these values out of SNMP and take the appropriate action if you choose, or you may find the software that the PDU comes with has a similar function.

### Reply 5:
Nodemcu/arduino + waterproof temp. sensor + relay module will do this.The software side is doable with the references provided here

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13965,"Date: 2011-05
Topic: Proportional --> PPC on deepbit
### Original post:
I'm wondering how to change from Proportional to Pay per Share on deepbit pool??

### Reply 1:
edit your miner's settings... there's an option to edit miners in the miner list of you account info page

### Reply 2:
ah , found it. Thanks alot!

","[
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14326,"Date: 2011-06
Topic: Everybody, launch your Bitcoin client! (node)
### Original post:
We need nodes so payments can get processed!Mining isn't everything. The more people have the Bitcoin client open, the easier it is to send/receive payments -- and that benefits EVERYONE, including YOU. You send/receive payments, don't you? (to cash in your Bitcoins, if nothing else)AND the quicker/easier it is to use Bitcoin, the more users it will get -- which benefits YOU because it drives up the value (and hence, the price) of Bitcoin. I requested an Instant Payment from Deepbit this morning at 11:00 AM, and it's STILL sitting in my client with ""0 confirms"". Anyone else experiencing this?Also, BlockExplorer seems to be down. More DDoS?

### Reply 1:
Blocks are still being created just fine. Your problems are not related to a lack of mining power.

### Reply 2:
Me also.. abonormally long for a single confirm, but, its probably normal

### Reply 3:
How does having more nodes decrease the time to have a peyment confirmed? Afaik, confirmation time is a function of tx fee, number of pending transactions.

### Reply 4:
I have a 4.05 BTC withdrawal in limbo from deepbit. It hasn't moved for hours.

### Reply 5:
what txfee does deepbit set on it's outbound transfers? If it's putting 0 then it's going to take a long time... in fact, I sent some BTC to myself with a 0 txfee and it's still showing unconfirmed for me after about seeing 30 blocks solved... that's the way it's supposed to work.Will

### Reply 6:
If that's true, I certainly hope he goes back to his old setting.You'd think Tycho could afford .0005 per transfer at least... I mean, come on!

### Reply 7:
It's important to forward the port (8333) if you do this. Nodes which don't listen can't connect to each other and contribute much less to the health of the network especially with the influx of new users.Also make sure you're running .22 or (better) .23-rc1: the newer versions are more permissive about relaying low/no fee transactions.

### Reply 8:
0/unconfirmed 6/13/2011 11:00It's now 5:06, Thats Six hours of waiting. Something is going wrong

### Reply 9:
I am having the same thing still 0 unconfirmed 6/13/2011 18:00, the amount isnt much tho 0.10 btc...but I hope there isnt any bug in the system..

### Reply 10:
Can anyone verify if these transactions have fees paid?

### Reply 11:
Yeah I've been having this problem all day. I posted here about it: <link> really quite annoying when you need the coins right away.

### Reply 12:
all fine and well , but for some of us on small/slow plans/connections we cant afford the constant 100% upload usage. plus ive even had it keep uploading after ive closed the client !? i had to disconnect from the internet to stop the invisible open connections from chewing but someone mentioned 'netlimiter' for windows that you can use to limit a program to say 5kb up, so ive installed it so i can start running the client again.also in related topic check out <link> for a download archive of the current block chain (quicker than waiting on the client to fetch it)

### Reply 13:
I'm still waiting on my first confirm on that 1.02 BTC transaction (from Deepbit).The transaction started at 11:00 AM (central time) -- it's currently 8:16! Something is definitely wrong.And has anyone else noticed that BlockExplorer is down?

### Reply 14:
Yeah I started mine at 4:32 PM EST, received it in my wallet at 7:19 PM EST. It's now 10:47 PM EST and it still has 0 confirmations. But I do have 8 connections. I don't understand why today transactions are taking so long.

### Reply 15:
woot my confirmations just spiked

### Reply 16:
finally! got 2 confirms.... bout time

### Reply 17:
Payments are processed by the generation of blocks, which is done by miners. Client nodes have no impact on the way payments are processed.

### Reply 18:
Hush. This thread was full of awesome.

### Reply 19:
ka ching.

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12127,"Date: 2012-12
Topic: Best for a Cuda machine?
### Original post:
I don't need to trolls to tell me switch to ATI. (I don't see any decent Server machines in the ATI bag of tricks, and don't tell me how amazing the AMD FirePro S10000, we bought3 K10s for around the same price, as the 1 card, and they are faster for 3d rendering speed, then the FirePro could pray to be)(And I don't need trolls that tell me turn off your GPU+CPU since BLFs machine is coming, its not here yet, and frankly even burning $200 at work on electric wont matter even if its to earn $20 in bit coins, because the power is a Tax write off as a business expense for us.)I just need what is going to run best on this, I have permission to do a 1 week burn in test on the cards, running the CPU (20 physical+ 20 Logical) and the Video cards. (I doubled checked server was ordered with 2 Intel 8850)And of course will be running the system in the off hours, and on weekend.

### Reply 1:
With those crazy high end GPUs, the concern is dual with exorbitantly high power costs, but also drastically reducing the life of the cards, all for just a few coins. But hey, it's your cash, not mine.The only CUDA miner I know of is the RPC CUDA one that's included in GUIminer. However, the mining software itself is almost 2 years without any updates. I doubt you would get any sort of performance out of that, but it's the best you got.

### Reply 2:
Sounds like you're pretty lucky, then. Most GPUs will not last 6 years, especially ones folding or mining 24/7!This is true, but BTC mining is not ""moderate"" by any stretch of the imagination. It's essentially a torture test that we decide to run all day every day.

### Reply 3:
You can change how hard you run the cards while mining, to decrease the ""torture"". Since you're not going to produce hardly any hash, not much reason to run high stress level hashing.You can mine with anything, cgminer, guiminer, etc

### Reply 4:
Cgminer supports ocl, not CUDA. GUIminer does to CUDA (and bypasses the 100% cpu as a result) thru the RPC I mentioned, but will be slower as it has not been maintained, IIRC.

### Reply 5:
I experimented with native cuda on nvidia GPUs here at home and it performed the same speed as opencl for bitcoin mining. The only advantage I found with native cuda was I could get the CPU usage down by disabling polling in it, which you cannot do with opencl on nvidia. So in summary, just use any miner with an opencl kernel that runs on your GPU. cgminer works fine.

### Reply 6:
Mining stresses a GPU more than Boinc. Yes, I do both.

### Reply 7:
Thanks, you said it far more expertly than I ever could have ck . But that was what I was driving at, you can use just about anything, phoenix, diablo. Gui might be simplest tho.

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10382,"Date: 2017-07
Topic: SCAM SITE
### Original post:
<link> scam site, NOT REAL EU DISTRIBUTOR!!!!!

",[]
12472,"Date: 2013-06
Topic: [WebService] json.karasoft.com - Consolidated Pools/Miners Stats using JSON/RPC
### Original post:
Looks awesome, nice work !!

### Reply 1:
Updated system with bug fixes and features- Functionality to Modify user profile and to change password.- Fixed Service Edit- Added BitMinter templates.

### Reply 2:
Nice service. You can go the oppsite way of the mobile apps with this and fill a big screen with loads of stats. Thanks for adding BitMinter templates!

### Reply 3:
Nice addition you have given to the community. Would it be possible to have a dark version of the page? So then the back ground would be black or a similiar darker type theme instead of white?Also when trying to register it says ""username invalid - this username already"" no matter wat is enter.Thanks for your time and contribution

### Reply 4:
I found the problem with registration, should work right now as expected. You were registered successfully the first time you tried, but there was a javascript error on screen refresh, so it seems like no response but you probably have multiple accounts right now, so you saw username exists message when you tried to click on register for a second time. Please PM me your user name so I can take a look what is in there.I will consider creating a version with dark color schema but it is not a priority right now (would be helpful if you do the following: do a screen grab of the web page and color code in photoshop and send me an image)

### Reply 5:
Added ""Profitability Monitor"" to auto switch between PPC, BTC, and TRC mining based on the current difficulty and Exchange rates.- Monitor works based on CGMiner API- You can configure your Worker to Switch between 2 or 3 currencies based on Exchange rates from Btc-E as well as current difficulty.- Worker popup window would allow you to see detailed statistics about currently configured pools and mining devices- The following Changes can be done to you worker right from the website: Enable/Disable GPUs/PGAs, Switch between poolsI have plans to Add Scrypt based currencies during the next update.You need to be a registered users (free) to use ""Profitability Monitor"".

","[
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    ""hardware_name"": ""CGMiner API"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""GPUs/PGAs"",
    ""hardware_is_owned"": true
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]"
17370,"Date: 2013-03
Topic: Dual card setup help
### Original post:
Hi,Long time miner, long time reader of this forum, first time posting here (thread reposted here from here)I used to have 2x6950 rig, just swapped one of the 6950s for a 7950 and am having some problems getting it running right.Problems are as follows: when all 3 monitors are plugged into the old 6950 the new card appears as ""Disabled Adapter"" in Catalyst Control Centre and is therefore automatically down-clocked to 500MHz and hashrate drops to ~250MH/s. I can get around this by connecting a monitor to it so that it appears as an ""Enabled Adapter"" but this is not ideal as it means that I need to run the memory at a more reasonable speed in order to avoid visual artefacts.I have been in the registry and disabled ULPS for the card but this didn't fix the ""disabling"" of the card, the only way I can find to get around this is to connect a screen to the card. I didn't have to do this with my old dual 6950 setup so this is quite frustrating. I have updated CCC which might be causing the problem, but I had to do this to get the new card seen by the system at all so I don't think a rollback is viable.I'm sure other people have had this problem but couldn't find anything after quite a bit <rest of post truncated>

### Reply 1:
Now that the card is mining properly I've messed around with OCing a bit and am running at 1050/300MHz core/mem, with +20% power (see above) and at stock voltage. Will run over weekend to check stability.Edit: Just to help anyone in the future following this, I used the tricks here to manage to get the clocks down to 300.I would like some advice on temps though. Setting fans to 100% gives a reasonable core temp of 78C but I'm worried about one of the VRM temps. One is down at 67C but the other is up at 97C which seems a little worrying to me. Any comments on whether VRMs can handle this kind of temp for a long time would be appreciated, and if not what can be done about it.Also, suggestions of best settings to run would be great, though this is secondary. Am currently running OpenCL miner on GUIMiner with ""-v 2 -w 256"" switches and am getting ~520MH/s with the above settings

","[
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    ""hardware_name"": ""7950"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Catalyst Control Centre"",
    ""hardware_is_owned"": false
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9959,"Date: 2016-08
Topic: Looking for Broken S9 Hash Board and Controller... Thanks!
### Original post:
Looking for some broken hardware to build UHB boards similar to the following:Universal Hash Board: Bitfury 28 nM ""UHB_BF28NM""<link> Hash Board: Bitmain 1384 ""UHB_BM1384""<link> Thanks to HolyScott at HolyBitcoin.com, I now have a Avalon 6 and Bitmain S7.I'm still looking for a Broken S9 Hashboard and S9 Controller... Thanks!

### Reply 1:
Update: Thanks to HolyScott at HolyBitcoin.com, I now have a Avalon 6 and Bitmain S7.I'm still looking for a Broken S9 Hashboard and S9 Controller... Thanks!Thanks Dogie for the offer on the S7 Controller. Looks like I'm good now.

","[
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    ""hardware_name"": ""Universal Hash Board: Bitfury 28 nM \""UHB_BF28NM\"""",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Hash Board: Bitmain 1384 \""UHB_BM1384\"""",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Broken S9 Hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 Controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7 Controller"",
    ""hardware_is_owned"": false
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]"
1521,"Date: 2013-09
Topic: [PAYPAL - 68 USB's LEFT]<USB $24.95><BLADE $595> ASICminer Erupter GB#7!
### Original post:
A few reserve orders in! I have a feeling this buy will be closed very soon!

### Reply 1:
Got my order, hashing away. Thanks for the fast shipping!

","[
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    ""hardware_name"": ""USB"",
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    ""hardware_name"": ""BLADE"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICminer Erupter"",
    ""hardware_is_owned"": true
  }
]"
11938,"Date: 2012-06
Topic: How to force Catalyst 11.11 drivers (and SDK 2.5) to install on  Xubuntu 12.4
### Original post:
I thought I would share this technique I discovered through trail error for forcing the Catalyst 11.11 driver to install on Xubuntu 12.4First you will need to download the drivers from the AMD archive, you can try to wget it, but for some reason I have problems with that so I just download through a browser.<link> +x the download to make it executable (chmod +x <truncated> super user mode by using sudo before each of the following lines......or make life easy and just use sudo -i to get a root prompt.(sudo) sh <truncated> --buildpkg Ubuntu/preciseAfter a couple of dialogs it will finish and you should have three new packages in the <truncated> It is vital to run this next command and let it error <truncated> dpkg -i fglrx*.debThis step is needed or else the software installer in the next step will just download and install the latest drivers and SDK instead of repairing the dependency cache issue.Navaigate with the file manager to <truncated> click and open the file with the ""Ubuntu software manager"".The software manager will indicate the install has a dependency cache error, click the repair button to have the manager repair the cache. Walk away have a soda, beer whatever..it will<rest of post truncated>

### Reply 1:
Mmmm beer...Btw, what does <truncated> do? Why do we have to use it for mining?

### Reply 2:
It is a workaround for the 100% CPU bug in ATI drivers.If your rig is not effected by that bug, the workaround will not hinder anything, so one is better off just using it all the time just in case.

### Reply 3:
Great article!I've also described the steps to install catalyst 11 on xubuntu 12.04.Take a look!Complete Guide To Mine Bitcoin on Xubuntu 12.04<link>

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    ""hardware_name"": ""Catalyst 11.11 driver"",
    ""hardware_is_owned"": true
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  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""SDK 2.5""
  },
  {
    ""hardware_name"": ""ATI drivers"",
    ""hardware_is_owned"": false
  }
]"
6161,"Date: 2013-08
Topic: [REFUND PROCESSING COMPLETED] K1 Nanos - Big Picture Mining Cooperative
### Original post:
Situation: BPMC is a purchasing and mining pool cooperative, where its members aggregate demand for chips and boards so we can purchase chips and produce boards for our members at cost with little or no mark up to the members. Having completed an Avalon chip buy as well as holding other chips from other buys we are keen on making K1 Nanos available to the <truncated> seems to be a small window of opportunity to provide K1s from August to the end of September given the market forces pushing on bitcoin currently. We feel that we can support BKKCoins by selling thousands of K1 units and providing his stipulated royalty on each sale of the K1s. Of course our members also wish to have a return on our investment so we will be pricing the K1 accordingly given the other products available. Note we will have a website posted in the coming week with prices. ResponseWe will supply the community a small volume of K1 Nanos from August to September and assess from that point if more K1 Nanos would be required should there be sufficient demand or potentially a similar product with more efficient chips could be <truncated> providing this limited run of K1 Nanos we feel we can reach many people who<rest of post truncated>

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    ""hardware_name"": ""K1 Nanos"",
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]"
10098,"Date: 2016-12
Topic: s5 io for s7?
### Original post:
Shalll it work whit 4 blades? and external power for the io as it uses a separate kabel.?anyone tried this?

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    ""hardware_name"": ""s7"",
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20985,"Date: 2016-03
Topic: Am I allowed to put AntMiner S7's frequency on 1000 at good temepture ?
### Original post:
Is that worth the electricity if you already need an airconditioner to cool it down?

### Reply 1:
We need airconditioner to cool down ourselves air tempeture comes near 60C here. airconditioner need to be on 24/7 or we will burn in this hell

### Reply 2:
Quite apart from the cost side of things I do not think you will ba able to run an S7 successfully at 1000MHz?Will also depend on which Batch you have? Assuming it is one of the later 135 Chip systems I think the very highest you might go to is 900MHz and you would need to monitor the Temperatures carefully and would probably be taking close to 2KW at the wall.Rich

### Reply 3:
okay here is what you do.run ac right into the intakemake sure the fan that blows the air outward is not restricted. So make sure the exhaust is vented out of the room.Step one set freq to 700 fan to 70% make sure the psu has 12.5 volts not 12.0 voltsStep 2 fire it uprun it for an hourcheck temps should be 50c or lesscheck fan speed should be 4200 to 4600check errors should be 0.0025 or lessstep 3 jump freq to 725 fan to 70% make sure psu has 12.5 volts not 12.0 voltsstep 4run it for an hourcheck temps should be 55c or less check fan speed should 4200 to 4600check errors should be 0.0030 or lesskeep that pattern of increase.when temps reach 62c stopif temps stay under 62 c and errors get to 0.200 stopa fan setting of 100% is not necessary top rpms are about 4200 to 4600you will get them at 70 to 75% fan settingI have never seen an s-7 get past freq 800 so good luck at doing better then that this over clocking voids warranty

### Reply 4:
Thanks man , How can i check the voltage?

### Reply 5:
cheap meter below should work.<link> is your psu?

### Reply 6:
Start by learning some basic electronics. It is dangerous if you don't exactly know what you are doing.

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    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cheap meter"",
    ""hardware_is_owned"": false
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]"
12564,"Date: 2013-08
Topic: Akbash 1.0.10:  Open Source cgminer watchdog (H/W monitoring, emails, HTTP)
### Original post:
Using Akbash on Win PE, and it's working great. Thanks for all your hard work!

### Reply 1:
I'm on Comcast/Xfinity as my internet provider. They block port 25, so Akbash can't send email. Changing internet providers is not currently a reasonable option for me. If Akbash could send email via SMTP through port 587 then the email function would work for me. Please add an option to allow choice of which port to send email.Thanks so much for an awesome tool!

### Reply 2:
Hello.Thank you for that software.I setup it on the windows 7 x64 with 7950 and everything work ok.But when i try install it on other windows 7 x64 with 7750 - something wrong.This is the part of log.txtYou may see that akbash restart miner and the reason is ""miner reported NO change in number of accepted shares (12) in the last 10 minutes; considered SICK ...""But in 10:57:38 - <truncated> - <truncated> - ""Accepted"":12Please help me resolve this problem. Thanks.

### Reply 3:
Yes, this is 1.0.10Config from log file:

### Reply 4:
Can Akbash be configured to send an email upon a successful block solve? I know a lot of your coding is for GPUs, but I'd love to use this to monitor ASICs while solo mining.

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    ""hardware_name"": ""7750"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""ASICs"",
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23368,"Date: 2020-12
Topic: Probably dead chip on s17+, how to fix it?
### Original post:
Hi all.I have an antminer s17+ with some problems. First 1 hashboard did not give any signal anymore or status. a week later the second hashboard went offline.I lowerd the powersetting (3th party software) and then 1 hashboard turned back on again. So i guess that it might be the PSU because the chipcount from the systemlogs are looking fine.Im wondering if it is maybe my PSU that is broken.I dont have a second good working PSU for s17+. I do have 2x s9 PSU and a s17pro PSU. Maybe i can convert these in someway to run the S17+? I can try some things but i dont wanna risk my S17+. i also have a multimeter.Is there any way how i can check if my PSU is the problem? Or does someone have a suggestion for what could be wrong?Thanks in advance.

### Reply 1:
Kernel log, screenshots, and photos .... read this: <link> the chip didn't burn up then the board is probably repairable but might be hard to find someone to do it. If the chip burnt then it most likely damaged the pcb and then would be nearly impossible to fix.Check out this thread: <link> this thread: <link>

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    ""hardware_name"": ""hashboard"",
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  },
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""s9 PSU"",
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    ""hardware_name"": ""s17pro PSU"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""multimeter"",
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]"
3861,"Date: 2015-06
Topic: Groupbuy MiningSweden VIP Shares Real Mining Company
### Original post:
status: 790VIPSubmission DateVIP Shares2015-05-28 <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> 11:10:2560

### Reply 1:
Update: 930VIPSubmission DateVIP Shares 6GHS2015-05-30 <truncated> <truncated> <truncated> 09:47:1122015-05-28 <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> 11:10:2560

### Reply 2:
update:actual status: 1080VIP shares109VIP shares funds available in some daysWill wait up to we have sure funds for 1000VIPSubmission Date VIP Shares 6GHS2015-05-22 11:10:25 602015-05-22 20:33:37 102015-05-26 10:38:21 1502015-05-26 15:47:10 1002015-05-27 13:39:56 102015-05-27 18:54:31 302015-05-27 18:55:51 302015-05-28 03:23:42 4002015-05-28 06:12:35 502015-05-28 07:45:27 152015-05-28 09:47:11 22015-05-28 13:01:53 152015-05-29 11:46:28 152015-05-30 00:27:22 432015-05-30 08:54:45 1002015-05-30 09:48:31 12015-05-30 10:48:11 142015-05-30 13:24:53 252015-05-30 15:22:18 10

### Reply 3:
now created in shop a product for groupbuy<link> share type groupbuyGroupbuy shares are sent out when payment for 1000VIP is received

### Reply 4:
Now finally the last payment has arrived(red marked).In total we got in Groupbuy 1034VIP Shares.Will forward money and list with participants(15) to Tommy.

### Reply 5:
Now we have bought more as 1000VIP in Groupbuy.Thank you all. :+1: Now the good news:Some people asked me, they can get also some VIP Shares with 6GHs from Groupbuy or paying with paypal?After speaking with Tommy, he said ""Yes We can.""Now we get the Groupbuy shares instant delivered, no long waiting(within 24hrs).Crypto payments: <link> payments: <link> we reach sold in total 2500VIP, the price goes down for all to $6.25This mean when you bought 25VIP in first round, you will receive anextra VIP Share when we go to 2500VIP.Just let others now about this nice deal from Tommy. VIP Shares contains 6GHS miningpower(all cost for first Year included) and the VIP part (lifetime 25% from Company Profit).Newsletter from Tommy <link>

### Reply 6:
HiI am organizing a groupbuy for MiningSweden VIP Shares.We save more as 25% from regular Price.Pics and Vids - <link> we have bought more as 1000VIP in Groupbuy.Thank you all. :+1: Now the good news:Some people asked me, they can get also some VIP Shares with 6GHs from Groupbuy or paying with paypal?After speaking with Tommy, he said ""Yes We can.""Now we get the Groupbuy shares instant delivered, no long waiting(within 24hrs).Crypto payments: <link> payments: <link> we reach sold in total 2500VIP, the price goes down for all to $6.25This mean when you bought 25VIP in first round, you will receive anextra VIP Share when we go to 2500VIP.Just let others now about this nice deal from Tommy. VIP Shares contains 6GHS miningpower(all cost for first Year included) and the VIP part (lifetime 25% from Company Profit).Newsletter from Tommy <link>

### Reply 7:
Update:Groupbuy actual <truncated> <truncated> 465VIPtotal sales: 1638VIPWhen we reach sold in total 2500VIP, the price goes down for all to $6.25This mean when you bought 25VIP, you will receive anextra VIP Share or you bought 50VIP you will receive two extra VIP shares, when we go to 2500VIP.Only 862left and we have 2500VIP bought. :-)

### Reply 8:
Bad News the Groupbuy will end on Sunday night.Now the GOOD NEWS. :-)In first actual status for Groupbuy sales:cryptosales: 1306paypalsales: 900total: 2206VIP shares bought in Groupbuy, only left **294** and we reach the goal with 2500VIP shares bought in Groupbuy. :-)When we reach bought in total 2500VIP, the price goes down for all to $6.25 and we save up 28.9%!!!This mean when for you, when you bought 25VIP shares, you will receive anextra VIP Share, you bought 50VIP shares, you will receive two extra VIP <truncated> <link> <link> go Crypto. Save up to 28.9% in Groupbuy and be a VIP at MiningSweden.

### Reply 9:
small update.I bought the missing ones and now we have bought 2500VIP in Groupbuy. smileThis mean for you, when you bought 25VIP shares, you will receive anextra VIP Share, you bought 50VIP shares, you will receive two extra VIPShares......!NOW must go through list and calculate extra shares/Ghs for each one.Extra shares will send when calculation is done.

### Reply 10:
what, no newbie vouches?people often say talking to yourself is a sign of madness, but surely an internal debate is a good thing?

### Reply 11:
this still active? can i get shares yet?

### Reply 12:
HiI have received list with paypal shares from Tommy.<link> I will do calculation for extra shares.Each Groupbuyer will receive an email.Sorry for long waiting, but there was some other unknown difficulties(Like paypal payments and reserving of groupbuy shares with late payment).Tommy and me we have decided to give out a coupon(VIP25) for the Groupbuyer.Coupon is only valid for Miningsweden VIP shares and only in limited quantit<rest of thread truncated>
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12727,"Date: 2013-12
Topic: Customized Miner Package for new P2Pool Launch! | P2Pool.GoodHosting.info
### Original post:
Customized Miner Package for new P2Pool Launch! | <truncated> our customized Miner Package here (Incl GUIMiner, CGMiner and Ufasoft CPU Miner)<link> <link> Hosting in SwitzerlandNo <truncated> latest 13.3 <truncated> -u <truncated> -p any -o <truncated>

### Reply 1:
Heh. Custom miner hosted off Mediafire? Err...I don't think so. Wouldn't touch it with a 10 foot barge pole.

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    ""hardware_name"": ""CGMiner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Ufasoft CPU Miner"",
    ""hardware_is_owned"": false
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]"
11995,"Date: 2012-08
Topic: AMD APP SDK 2.7 performance?
### Original post:
I just noticed that version 2.7 of the AMD APP SDK was released last week. I was wondering if anyone's downloaded it, and if they've seen any performance increase/decrease when mining?I'm only using 58xx cards right now, so I doubt it'd be worth it for me to upgrade (still using 2.5). However, I plan on buying a 7970 in the near future, so I'm gonna have to upgrade when that happens, and I wonder if this is better than 2.6.Thoughts? Speculation? Personal experience?Here's the link:<link>

### Reply 1:
Tested on Linux and ATi Radeon HD 5850. AMD APP SDK 2.7 in system with Catalyst 12.4 was installed manually. Cg Miner 2.4.1. Core Peak - 750 MHz, Memory Peak - 250 MHz.Driver SDK Perfomance12.1 2.6 301.9 Mh/s12.4 2.7 298.5 Mh/s11.11 2.5 307 Mh/s

### Reply 2:
I also use CGMiner. What kernel was this? Phatk? It was my impression that if you have to use 2.6 on a 58xx card, diablo was better than phatk.The fact that it doesn't give amazing results on a 58xx cards doesn't surprise me, and it's kinda why I havn't upgraded myself. Anyone with a 7xxx card tried it out?

### Reply 3:
I'm using it at the moment. Win7 64bit, cgminer. Sapphire 5970's, core: 785mhz memory: 503mhz. Its a bit undervolted.i: 8Getting 345mh/core with these settings.

### Reply 4:
I think AMD has tweak some settings toward 7970.6970 & 6990 with Freq/Mem as <truncated> with Freq/Mem as <truncated>

### Reply 5:
That's what I was looking for. So even with a 7xxx series card the new version is still slower? Is this an SDK issue, or you think it's just that current kernels are not written for 2.7?

### Reply 6:
I think it's tiny difference (~0.7%), and I'm still testing the stability of both drivers.For me, stability is more important than performance.

### Reply 7:
Why not keep the same drivers and update only the sdk? That'd give a better indicator.

### Reply 8:
I doesn't tried. Do you mean Catalyst 11.11 and AMD APP SDK 2.6 or 2.7 (libOpenCL.so.1)?

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    ""hardware_name"": ""ATi Radeon HD 5850"",
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    ""hardware_name"": ""6990"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""7xxx series card"",
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]"
10050,"Date: 2016-11
Topic: 14nM/16nM Chip Specifications
### Original post:
Looking for Chip 14/16nM Specifications. I understand their are some 3rd party projects going on with BW and Bitfurry chips. We are NOT looking for chips.....YET, but the information would help solidify our miner design.Anyone that is in a position and willing to help in this regards would be greatly appreciated.If you want more Bitcoin Hardware variety, please bump and keep this thread active. Thanks!

### Reply 1:
You want to source chips and produce a miner? As far as I am aware, none of the players are sourcing chips for production outside of their own designs.

### Reply 2:
Exactly....none of the chip makers are going sell anything to the home miner club (anytime soon anyway).You guys might get few chips to ""play"" with,but I doubt any of them are going give you enough to get a production going Keepin it 100 is all I'm doin

","[
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13666,"Date: 2020-10
Topic: W_Firmware for Bitmain Antminer
### Original post:
Hello Miners!WATTUM Software provides a full range of services specifically designed for crypto mining including Wattum Firmware for Bitmain Antminer latest generations S17 and S19 with efficiency improvements by up to 35% and including a host of infrastructure upgrades. STOCK BITMAIN S17\S17Pro 50 TH/s - 2250 watt (45 J\TH)53 TH/s - 2250 watt (43 J\TH)WATTUM MODES S17\S17Pro 42 TH/s - 1200 watt (29 J\TH)54 TH/s - 1850 watt (34 J\TH)60 TH/s - 2480 watt (41J\TH) 66 TH/s - 2750 watt (41.5 J\TH) 72 TH/s - 3100 watt (43 J\TH) DOWNLOAD W_FIRMWARE <link> For the support <link> Free asking any questions here!

### Reply 1:
Burns miners, Lies about fees, Also the dev made the night switcher virus... Yeah that last one looks like they made an oopsie and signed the latest version of the virus with the msk key by accident...

### Reply 2:
Hey Taserz. We're really sorry with your bad experience with WATTUM. Did you connect to our support on this question? We guarantee that W_Firmware goes without viruses and our support can help you with all your questions just visit <link>

### Reply 3:
... and it violates the cgminer license ...

### Reply 4:
Kano, I always see him writing that it violates the csgminer license, but in other better known frimwares that also do it, I don't see him writing it?And I want to emphasize that I don't trust this firmware and that I would never install it.But if I would like you to answer me this, since you are a well-known member in this forum and I do not understand this change of magic wands when it comes to defending one and others because you have not seen it.I do not want to offend you much less, if you do not answer me I will take it well.A greeting.

### Reply 5:
I confirm , Kano, say on ALL firmware the Cgminer problem of GPL, on my firmware to no exeption !!!

### Reply 6:
Kano is vocal about the GPL issue in almost all of the aftermarket firmware threads. Just check them and every few pages he brings it up again and again. The one exception is BoS from the folks at Slush and that is because BoS is a clean re-write of the software and is not using any cgminer code plus most of the BoS code is published as open source.As for Bitmain and other mfgr's using cgminer without posting their code, only Canaan has lived up to the source code requirements so ja BM, MicroBt and others are also in violation but pretty hard to go after them about it...

","[
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    ""hardware_name"": ""Bitmain Antminer S17Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S19"",
    ""hardware_is_owned"": false
  }
]"
11922,"Date: 2012-06
Topic: Consolidated list of latest OpenCL kernels
### Original post:
AFAIK all miners use the same OpenCL kernel and the kernel itself hasn't changed for long time.Is this true? What are the latest OpenCL kernels and where a new miner writer can get them?

","[
  {
    ""hardware_name"": ""OpenCL kernel"",
    ""hardware_is_owned"": false
  }
]"
17825,"Date: 2013-06
Topic: cgminer temp-overheat not working
### Original post:
Notice for GPU1 the temp-overheat is set to 85C, the temp-hysteresis is set to 1, and the temp on GPU1 is at 88C. Why is cgminer not reducing the clockspeed to lower the temp?Are my settings wrong?

### Reply 1:
You're not enabling auto-gpu

### Reply 2:
Wow. I read this over like 30 times. I'll turn on auto-gpu. I feel retarded.

### Reply 3:
88 deg C is getting up there. Have you checked that the other temps in your card is not much higher than that? Most 6xxx and 7xxx cards have 3 thermocouples per GPU, sometimes the one reported in cgminer is the lowest temp of the three.

","[
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    ""hardware_name"": ""6xxx and 7xxx cards"",
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8221,"Date: 2014-08
Topic: My new garage and 200 amps
### Original post:
If I got a new 240v outlet, how would I use it to power my miners. What are my configuration options. Am I limited to power supplies that have 240v plugs (like IBM DPS-2000BB). If you were getting new circuit breakers put in what would you get? Eventually I won't be mining so I would use these outlets for tools (table saws, band saws), do they use 240v outlets?^^^^ tl,dr ^^^^I have a new house and therefore a new garage. I would like to put all my miners in said garage. The circuit breaker panel is already in the garage. I have a meeting tomorrow morning with an electrician. At that time I would like to tell him what outlets I would like. I've already talked to bge, and I can use 26000 watts. I'm planning to put all of this in the garage. Suggestions on outlets, configurations, my sanity, areas I might have issues. The goal here is safety first, looking normal second (like a heavily decked out tool room, not like Im trying to recreate a tesla experiment). If nothing else, because a year from now, I might not be mining, but I will need tools.Is there a way to make a 240v outlet, a 120v outlet? I know you can't do the opposite as the wires in the wall would melt, but I would think yo<rest of post truncated>

### Reply 1:
Why would you want to use 120V? PC power supplies can run on either. 240V is more efficient, cheaper, and puts less stress/heat on the power supplies.

### Reply 2:
Five 30A x 208/240V drops terminating with Nema L6-30r receptacles. Get Some PDUs to plug into those. Save the last 10A of headroom for some huge ass fans. You'll need them.

### Reply 3:
Ask your electrician. He will know what the local codes are and stay within them.

### Reply 4:
You don't need an electrician. Just buy a Tripplite PDU and appropriate cords for the PSUs for the 240v plug.Btw, all current, good quality PSUs can take 240v.

### Reply 5:
This is exactly what I was looking for, I think. When you say the pc power supply can be run on 240V, are you talking about using the PDUs that others have suggested or something else? I can't plug them directly in as the plug doesnt fit in the Nema L6-30r.

### Reply 6:
You use something like this to power your PSU's:<link> on the PSUs you are running will determine if you get the 10 or 15 amp version (though in truth, at 208/240v you will only need the 10amp). The Triplite PDUs are set up to use these cords and will work with any EVGA/OCZ power supply. A typical PDU can be found here:<link> it's more efficient to use 208/240 versus 120 to power your equipment.

### Reply 7:
For the same power rating, doesn't 240v takes less current from the mains than 120v? So what is the reason to use a 120v mains ?

### Reply 8:
Most PDU's have either L6-20p cords though you can find them with the C19/C20 or C14/C15 PSU style plugs. You can get L6-30 to L6-20 adapters, but they start around $35-$40 each, so if you're going to have an electrician out, I'd have him install L6-20r recepticles right next to your L6-30r's. Just watch how many amps you put on a circuit at any given time and you'll be fine. That's usually not a big deal as a 30A circuit can safely handle 30x240 (x80% for continuous load safety factor) 5,760w. That would easly handle 5xEVGA 1300G2 PSU's running 15xAntminer S3's.

### Reply 9:
Only reason is because US households are wired primarily with 120v, and (even if you have a 240v circuit) it can be difficult to get 240v power cables for your PSU's.

### Reply 10:
This is the fate we suffer for being early adopters. Back when electric service was new, the higher voltages tended to burn out the lightbulbs too quickly, so the 110/120V standard was adopted for residential power transmission. By the time engineers figured out how to make stuff that wouldn't burn out with the higher voltages, the US didn't change because there was too much infrastructure already in place.

### Reply 11:
Well US service is 240V. It is 240V split phase producing 120V between either leg and the ground and 240V between both legs. There are no 120V mains in the US (or it would be very non-standard and archaic).

### Reply 12:
You're absolutely right... I just didn't want to get into it and confuse the OP by saying, ""Well, we really are a 240V split at the center pole into 2 120V lines and a ground in your home"". That just seemed too much, so I stuck with the history lesson on why we've got 120V in our homes

### Reply 13:
You don't get 208V with a normal residential service. 208V is one leg of a 3-phase service .. usually data-center grade.What you get with a residential service is 250V split phase. That should be good enough for mining, but the data-center PDUs are not rated for it.<link> fun!

### Reply 14:
I think he was writing it as 208V/240V because it is the same exact connectors for 208V single phase and 240V. Same wiring configuration, same plugs, same outlets, same PDUs, etc. Never seen a PDU that didn't work on both 208V and 240<rest of thread truncated>
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    ""hardware_name"": ""L6-20p cords"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""C19/C20 PSU style plugs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""C14/C15 PSU style plugs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L6-30 to L6-20 adapters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L6-20r recepticles"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""EVGA 1300G2 PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S3"",
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]"
15737,"Date: 2016-04
Topic: Mining Centralization Concerns
### Original post:
Unfortunately most of your solutions appear like wishful thinking to me

### Reply 1:
Not just the solutions but also the problems...

### Reply 2:
Elaborate that? I think my concerns are pretty well founded and not just fantasies.These bad things can happen anytime like a black swan even, if the community is not prepared for them, or doest nothing to prevent them before they could happen.

### Reply 3:
Ever spiraling difficulty is surely the major factor in centralisation. The makers and operators of the best machines are going to hoard them. The richer they get the further ahead they pull. Nothing's going to change now I don't think. Satoshi missed a trick there.

### Reply 4:
the only pools that will make a profit are those that have manufacturing linked to their business.no matter how much you try to tell people in the west to start mining. they are going to be buying the rigs from the east at a huge markup. so the west will NEVER be as competitive as the east.its already happening. for every rig sold for $1000. has an actual cost price of under $200. so for every rig someone in the west buys, they are literally giving 4 other rigs to the competition in the east.(and they 'thank you long time' for those free-bies that allow 400% competition advantage)there is no way to compete unless you are part of the manufacturing of the rigs.the solution. expand the manufacturing and get more rig manufacturers on the market. which will trickle down as more choice, and more options and also a price war on the rigs. which will result in cheaper rigs to allow for more chance of competition.EG if there are suddenly 10 manufacturers.. you will see the smart ones drop their price to $400 so that they still get a free rig, but also are still beating the competitorsbut if there remains only 2 main mining rig manufacturers, they will continue to overprice the competition an<rest of post truncated>

### Reply 5:
A solution is to move to a proof of stake coin. But nobody wants to hear that.

### Reply 6:
Where is silicon valley folks? All those manufacturing plants...Dont let them go to waste, they should start producing cheap mining equipment for americans and europeans.

### Reply 7:
The Chinese still have the manufacturing edge over the west with the 16 nanometer chips. It will take time for Silicon valley to pick up the slack and even if they do this, the Chinese will just find ways to do it cheaper. They have much cheaper labor and they are more disciplined.The technology will stagnate for a while, until something new pops up and then we will rinse and repeat. The only way for the West to dominate, will be to subsidize the electricity to boost investment into Bitcoin mining and this must be cheaper than the Chinese, which will be very difficult.

### Reply 8:
Why dont they buy the blueprints?I guess it would be cheaper to buy the blueprints from them and design an equally powerful or even cheaper mining equipment in silicon valley.Technology is already stagnating, so acquiring the blueprints now is the best investment now for the manufacturers.

### Reply 9:
1. even knowing how to make it does not suddenly or magically become cheaper simply because silicon valley is involved.2. buying blueprints is meaningless. once you spent millions of dollars and months of negotiations the blue prints are already out of date because a new design has already started production by the competitor.3. no matter where you get the talent. (bitmain already has engineers from san fransisco) the physical manufacturing wont be cheaper done in USA4. it does not matter where in the world the headquarters is. the manufacturing has to be done somewhere with low labour cost, low facility costthe solution is to follow antpool(bitmains) business plan.have talent from san fran. have manufacturing in [cheap location], run the rigs in 1 hour delivery distance of manufacturing factory but have the main pool server in any country you please.i wont suggest african, indian or any of the 'stan' countries based on the heat(adding costs to keep rigs cool). looking at a non middle east country to set up. i would say the Ukraine or russia has potential. compared to america or the UK, based on labour and facility costs.ukraine has cheaper labour($0.30c /h) and also cheap <truncat<rest of post truncated>

### Reply 10:
Yea but I`m talking about comercially available mining equipment. Its useless if they develop the miners and only use it themselves, or sell it for a 8x profit.That wont help bitcoin become decentralized.So we need more producers to flood the market to make the cost of those equipments ultra cheap.

### Reply 11:
like i said.. if someone was to set up another manufacturing company in a cheap eastern euro country (to compete) they can sell rigs cheaper. and start a price war to get cheaper rigs from both china and europe.but here is the thing. no matter what delusions that a westerne<rest of thread truncated>
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    ""hardware_name"": ""cheap mining equipment"",
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13698,"Date: 2021-07
Topic: Hard question : Mining pool and 2 different miners --> same shares if same work?
### Original post:
Hello,I didn't find answers to my questions on the web or the bitcointalk pools forum , can you help please :I know that a pool will not send the same work to different miners . SUPPOSE there are two antminers S9i ( for example) mining on a poolSUPPOSE that the pool sends the same work to these miners and the difficulty is the same for both. -Will the miners' shares be exactly the same in this case ? (I mean with the same delays and hashes)Now suppose that the pool REsends the same work to an antminer-Will the shares be exactly the same as before ? (I mean with the same delays and hashes)Thanks

### Reply 1:
If the work generator software is coded badly and doesn't give a different stratum coinbase sig to two different miners, then they will probably mine some of the same results.If the two miners are exactly the same firmware and hardware, then giving two miners the same work will produce some of the same results.They will not always produce exactly the same results, since the two miners will not mine at exactly the same hash rate and exactly the same CPU clocks getting exactly the same time between generating internal work.But typically one would do more work and the other slower one would do a less amount of work that overlaps from the start of the faster miner.P.S. since you included the term ""Pool"" in the header. No that wont happen unless the pool doesn't know what they are doing.

### Reply 2:
Thanks

","[
  {
    ""hardware_name"": ""antminers S9i"",
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]"
14387,"Date: 2011-07
Topic: Anyone else have their friends buy mining rigs...
### Original post:
after you specifically warned them not to?My one friend bought cards at inflated prices after I ran some numbers and told him that the break even point was too far in the future. $800 for a rig that gets .4 coins a day is ludicrous.

### Reply 1:
I kind of agree with you .Some people expect BitCoin price to skyrocket soon.Surely difficulty (which is a measure of value, despite of price) is quite high compared to actual BTC rate.Starting an investment with mining rigs right now is risky.

### Reply 2:
What? He has under 100 MHash/s of power??

### Reply 3:
I have 320Mhash/s going and make between 0.2 and 0.25 per day. How do you get 0.4 with 100Mhash/s with today's difficulty level?

### Reply 4:
That's what I get for posting before the morning coffee...My bad, carry on.

### Reply 5:
actually not even .4 coins. 2x 5830's is yielding .38 at 600Mh

### Reply 6:
What is this, everyone jumps on board now?I thought I was the town leper for saying this a couple weeks ago, and only one person agreed with me.

### Reply 7:
I'm going to be very blunt with you. You have very little tact and this causes things you say to be disregarded even if they may be true.

### Reply 8:
Nobody builds rigs now in order to pay them off at today's exchange rates. They build rigs in hopes of paying them off with next month's exchange rates. The only person who can say whether building a rig now is foolish or not is Nostradamus.

### Reply 9:
Well put. If you build a new rig today specifically for mining bitcoins, then that's a gamble on bitcoin's future. Mining and selling the bitcoins immediately would take a long time to pay back the hardware at today's difficulty and bitcoin value. Mining and keeping the bitcoins might be a success though, depending on whether the bitcoin is a success.I wouldn't advise a friend to build a new mining rig today if they didn't think it was fun and wanted to take a gamble on the bitcoin. But some do think it is fun, even CPU-mining, to be part of a bit of a revolution.

### Reply 10:
Hey, come one, he's no MarvinMartian At the time of the MtGox hack, I nearly ran a pool to see who people were the most annoyed with, the MtGox Peeps ro Marvinmartian. But thought that would be too cruel. It didn't even cross my mind to include Angelus. His stuff is factual, but perhaps a wee bit to negative for most to handle.

### Reply 11:
I you really expect the price to skyrocket soon, buy the coin and do not waste your money with rigs and what not.

### Reply 12:
Yes, if they got super-valuable, wouldn't a bunch of people sell and bring the price back down?And, if so, which would be better:A) owning a $1000 rig that produces 0.64 BTC a day.B) buying $1000 of bitcoins, or 70 BTC (at current market rate).Because I think there would be somewhat of a ""peak"", which could only be capitalized on if you had your money all at once.Yes, if you're in it for the long haul then we're not even having this discussion. Some people really want to mine -- and nothing's going to dissuade them. I personally would go with ""A"" because I don't mind the hassles of mining. It's not a get-rich-quick scheme for me.But when people say ""I mine, even though it's not very profitable, because BTC will quadruple in value in the next couple months"", they're really not thinking it through. You'd be better off buying BTC if you really believed that -- and if making money was your motivation for mining.You could always ""cash out"" when the price quadruples and then cash out and buy PC equipment if getting PC equipment is what you're after.Matthew

### Reply 13:
Thanks for that. I've been trying to say something similar, but you hit the nail on the head much better than I have. All the threads debating whether or not mining is still ""worth it"" are about as pointless as all the threads debating where the price of Bitcoin will be in a few months.

### Reply 14:
Incorrect. I can accurately say whether or not mining is ""worth it"" for me, with my hardware, day by day. I can't say whether *investing* in BTC, whether through purchasing more hardware or BTC directly is ""worth it"", but I can tell you within 10% at what price to difficulty it will no longer be ""worth it"" relative to selling the hardware. Let's just say at $.046/kwh and an expected ETA of early 2012 for ATI 7 series that day looks to be far, far away (in bitcoin time, anyway).

### Reply 15:
I have six 6970s @ 420mhash each for a total of 2520mhash/sec... Currently make abut 1.5/day

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13140,"Date: 2014-06
Topic: BOUNTY! Help setting up Stratum Proxy Server + 1 Miner to Connect.
### Original post:
I have a number of rigs that run eithe 280x or 270x cards. I need assistance setting up the Stratum Proxy Server (that supports x13) on a host machine, and then help getting at least 1 of my miners set up to connect, and be controlled by the host machine. The stratum version needs to be able to support all the major algos, x13, x11, keccak, 256, scrypt, scrypt-n, so please make sure you're including the kernals. All of these are available for free via download on github. I want all of my rigs to act as one big rig... so I can just change the conf file on the Host and all the miners re-direct. I got the Stratum version downloaded, along with the required Java, and I can get the miner to connect, but it's all errors. I'd simply like to pay someone to pick up where I've stopped to show me how its done. Once finished on 1 machine I can replicate to the other miners. You can login via teamviewer to both the miner and the host. Lastly, the miners are all configured as stand alones, so I dont need any help with config settings for the gpus, just connecting to the host/stratum. Please PM me quotes, and when you would be available as I have to be online to teamviewer you in to control the r<rest of post truncated>

### Reply 1:
You should check out MultiMiner yo...<link> simple to setup and use.

### Reply 2:
Stratobitz,I believe the project I'm currently working on would suit your needs very nicely. It's a web based stratum proxy that you can control from anywhere, simply point your miners at it then switch pools with ease from any internet connected computer. For example, if you register with the username Stratobitz, you would point your miners to <truncated> and the port assigned to your account on your dashboard. From your dashboard you can add/remove pools and choose which pool your miners will connect to from an easily navigable menu. We're still in BETA, but it's been extremely stable so far and we're always looking for more people to test it out and provide feedback.Please check out our ANN thread for Miner Minder. If you have any questions, please feel free to ask.Thanks!

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6518,"Date: 2013-10
Topic: Better pre-order pricing scheme
### Original post:
One problem with pre-orders, is that the customers that order first, get their devices several days or weeks earlier than others, thus extract significantly more value from them.Option 1I believe that pre-orders should be priced on a sliding scale in batches based on estimated shipping day. For example, if the company estimates that they can ship 200 orders per day, then the pricing would be broken down into blocks of 200 units. The first batch would be full price, then each following batch would be reduced in price based on the estimated BTC mined per day. For example, batch 2 would be $100 cheaper than batch 1, and batch 3 would be $100 cheaper than batch 2, etc.For example, with the recent KnC orders, all customers paid $7000 for a Jupiter, but some got them on Oct 5th while others still haven't been shipped. In that time frame, there have been 2 difficulty resets which means that the early miners could have made at least 6-10 BTC more than later orders.Option 2Customers should pay a fee to get a place in line, such as 10 BTC. When it gets close to shipping time, customers would pay the remaining balance based on the date of their device shipping. The later it ships, the lower t<rest of post truncated>

### Reply 1:
Thats not quite true...They pay a heftier price for the privledge of having the machine earlier and that offsets their profits.Paying 16k USD in August to get it in October is almost the same as paying 6k USD in October to get it in December.

### Reply 2:
Or they just shut their mouth until they have a product ready to sell. Then announce it.

### Reply 3:
Well they don't absolutely have to keep it top secret but just sell it when its in stock and ready to ship in 24hours.I would also request that in such a case limit the volume per order per shipping / billing address for the first round of stock at least so that Jabbadahut miners don't hog all the hardware and screw the hobbyists.

","[
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17379,"Date: 2013-03
Topic: Remotely uploading and executing Bash scripts (BAMT)
### Original post:
Need some help uploading a bash file from my Windows computer to my BAMT mining rigs. I really don't know how to use the file transfer thing on ssh so I've been using wget and dropbox as a go between. This works fine for uploading bamt.conf files. But when I upload bash files I get this message on execution ""-bash: /bin/updatecg: /bin/bash^M: bad interpreter: No such file or directory"" This happens I believe because when I try to edit it with nano the file says converted from dos format. I am using notepad++ on windows and saving it with the unix batch file option but still it must be formatted incorrectly. Can anyone help. All the commands appear to me perfect when viewing in nano. I can copy and paste the commands directly in a new file and the script works fine.

### Reply 1:
Don't know anything about BAMT, butIt seems like you have a carrage return in there. So it's trying to run a shell called <truncated> Linux files are line feed terminated. Windows uses carriage-return line-feed. Make sure you remove all carriage returns before you execute the file.

### Reply 2:
To transfer a file via SSH use scp.<link> you want to transfer file ""test1.txt"" in home folder of user1 at computer1(you can put IP address here) to current folder type:Code:$ scp <truncated> .Notice the dot at the end. It means you want to copy the file in the same folder you are actually doing the command. You can also use a path like <truncated> instead.

### Reply 3:
Well I found out the problem. I was using notepad++ which although doesn't do the spaces like a default windows notepad does still does the line return windows way (with default settings). Basically it worked for bamt.conf and pools file but no other files. I guess bamt must ignore the carrier returns. So if you use notepad plus you can ""Edit: EOL Conversion: Unix format"" and resave and it worked

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13085,"Date: 2014-05
Topic: [Bounty 0.02 BTC] Stratum mining proxy is disconnecting
### Original post:
Have you already tried to switch temporarily to another pool to see if the one that you are using now is the problem?

### Reply 1:
yes but i want that one to work, and it is working normally when i put my cgminer directly to it

","[
  {
    ""hardware_name"": ""cgminer"",
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]"
8689,"Date: 2014-12
Topic: might get my hands on Hydro power. help me build a case to get it?
### Original post:
Hello! so i might get my hands on some Hydro power to power my miners with !here's the catch, the Generator needs fixing and i need to convince my friend to let me fix it and use it.but anyway, i need to build a strong case why i should be allowed to fix the generator to generate power to my miners and to the owner.The Hyndro plant it self is located in a ''Industrial park'' (i don't know what to call it) in sweden and my idea is that if i fix the Hydro power so o can use power for myself and to power the building (which is a caf, i don't mean heating but mostly lights and various machines) that its hooked up to.the owner (whom i know very very well) won't fix the generator and use the plant again because its not effective for them because the amount it would produce would not even cover 1% of their total Power use. the things i can think of that would help me convoke him to let me fix it / use it are:They would get some free power.They could earn money on it.It won't cost them anything.they will get a new ''attraction'' and show people how Power was produced back in the old days. (its an old hydro plant)if you guys know any more reasons please write them below

### Reply 1:
How much would it cost to repair it? How much power would you be able to draw? Do you have a picture with the room where the miners will be?Why do you need to convince your friend to allow you to fix it? You are doing him a service. You shouldn't try to find reasons.

### Reply 2:
the cost would depend on the generator. if its broken and my friend ( who i mine with ) can fix it it won't be expensive at all, we're 4 people who can invest in it. i would be able to draw at least 50 KwH if i'm not mistaken.the only reason i can think of that i need to convince him is thats i'm a lot younger then he his, and he's a bit old school and won't think i'll be able to fix it or that i'll just mess something up (which i won't)

### Reply 3:
This.I'm terribly confused by the story, as apparently you're willing to put in the time, material costs, etc. to fix it at no apparent expense to them.I guess if I had to look at it from their view, there may be concern that you need access to the premises - but it's your friend, right? - that there may be noise pollution while you're working on it - fair enough if that drives customers away - and that you may damage it more than repair it and selling it 'as is' might be more profitable to them - but in that case they should have sold it already.( And you addressed this last point in your latest reply, so... )

### Reply 4:
If they're generating ""Green"" Energy, regardless of how it's used (they might consider mining a waste to some extent), they could claim to be offsetting that amount of their carbon footprint. If I was you, I'd figure out how their current electricity is generated, how much carbon emissions are created per KwH by asking the utility, and then create a marketing plan detailing how much carbon emission is being offset by his company by allowing the generator to run (at no cost to him).He's probably skeptical because he knows that you are going to profit from it, and doesn't want to miss out on some himself? I also don't understand why he'd be against the idea, or what he has to lose.

### Reply 5:
I would be totally honest with him. He might want nothing or a piece of the action. Being sneaky is not the way to go, be honest and willing to let him in on the deal.

### Reply 6:
You shouldn't fix it due to this reason ""produce would not even cover 1% of their total Power use"".Sounds to me like it is a small hydro which only produce 1-2 kwh. Fixing it might be so costly that you will not generate enough power saving for the whole life of it.

### Reply 7:
You can generate 2kW with a car alternator size generator ... it's about $250 to buy a gas powered one. As log as the gear boxes are working a 50kW generator is not big and can be adapted with some professional help .. you only need to provide the right torque and RPM .. Put some pictures up with what you'll need to fix

### Reply 8:
That was the statement which caught my attention also. Sounds like its possibly just a small creek out back with relatively low flow speed and little or no vertical drop/waterfall that would allow 10kW+ power. details and photos of the actual generator are necessary

### Reply 9:
Perhaps it is a lot of work to keep it running or maybe it would disturb some nearby tenants. Maybe it is a hazard of some sort or he is afraid if you try to fix it that you will cause further damage or discover other major problems.

### Reply 10:
50kw is a lot of power and sure it can be used for 140 s3 or about 15pcs SP35sure all this will make some big noise.Drinking coffe and hearing this <truncated> not be ideal for the customers.Owner for sure must be aware and fully cooperative on anything has to do with his property.just allow him<rest of thread truncated>
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    ""hardware_name"": ""car alternator size generator"",
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    ""hardware_name"": ""gas powered generator"",
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    ""hardware_name"": ""SP35"",
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22099,"Date: 2017-12
Topic: Question About Antminer S9 Electricity/Volt
### Original post:
Hey guys, I plan on renting a place to install some Antminer S9. Its just that i need information about the voltage and electricity, i dont know much about these stuffs. What should i ask to the owner of the place before signing anything? Thank you!

","[
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]"
5426,"Date: 2013-06
Topic: ASIC BUILDING BFL,AVALON,ETC
### Original post:
<link> those aren't your machines...

### Reply 1:
yes its mine i have 1 that just a pic of both colors i do xbox360 ps3 and pc repairs for a living. this thread is for people who need building not people questioning whether i own it.

### Reply 2:
Not that im doubing you or anything... the correct protocol here is you write your username and todays date on a paper, place it on the device, then take a photo of it and post here. That gives some sort of assurance to people and reduce chance of someone calling scam... How much to put together a K1 and K16 if all parts and pbc provided to you?read specs on <link>

### Reply 3:
Can you put 6 more ASICs onto Jalapenos?

### Reply 4:
yes also posting pics means nothing in todays tech age as anything can be altered it proves nothing

### Reply 5:
what ever you think is reasonable i do this because i like too not to become rich off it plus i like helping the community

### Reply 6:
It prooves you have access to the machine, or that ur very good at photoshop. your refusal to follow convention shows that neither is true.

### Reply 7:
look ill post pics just to make everyone happy

### Reply 8:
Those machines are 'no good'Specifically because they do not allow controlled pre-heating of a small area on the reverse of the board.Rather they go for the 'nuclear' approach.they are just 'cheaply made crap' and god only knows WTF the wire mesh on the front above the IR heaters is forBarbecuing maybe?

### Reply 9:
I am a PC tech who owns a IR6000-V4 perfect for putting chips on boards if anyone needs my service for building these devices let me know I work from home and can solder many boards a day.

### Reply 10:
these machines are great plus this has been modified with accurate temps and computer controlled dont know where your info came from

### Reply 11:
<link>

### Reply 12:
I have acces to a Pace TF1700, and i do allot of rework, infrared is a cool thing but only if the chips do not reflect the heat. in that case you better use air flow.

### Reply 13:
<link>

### Reply 14:
Its a < $700 machine so why get so flustered. Buy one yourself.

### Reply 15:
plus i have hot air i like ir better does not heat surrounding components shorting there life also this model has hot air attachments if you dont want IR<link> are the mod's ive done to mine

### Reply 16:
also for the people building im selling my 16 chips accepting offers

### Reply 17:
we'd like to build a specialty board... I shall be in touch.

### Reply 18:
thanks

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    ""hardware_name"": ""PS3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""K1"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""K16"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""ASICs"",
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    ""hardware_name"": ""Jalapenos"",
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    ""hardware_name"": ""IR6000-V4"",
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    ""hardware_name"": ""Pace TF1700"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""16 chips"",
    ""hardware_is_owned"": true
  }
]"
22472,"Date: 2018-03
Topic: s9
### Original post:
Hello,I have 60 pcs S9 miners.Some times some S9 have error with HB ""xxxxx"" , and ussaly send to reparier to china.Two weeks ago i have same problem with one of miner. But befor i have send to china, i put on other miner ( who work normaly) this 3 HB and was suprise that now all 3 HB work. So i put gain back on error minet this 3 HB and again show all ""xxxxx"". So i figured out that problem was not with HB . So on stock i have 2 controal board new one and i put on this error miners and miners not work not because "" xxxx"" but because too low tempreture of chips.So i change 2-3 difrent firmaware and same problem.Now i asking if anyboday could tell me to solve this problem. Because my HB are ok, but on this miners not runing with old controal borad ( because ""xxxx"") and also new controal board ( because low temperature) . I dont want send back complete miners to chine, because they need 3-4 months to send back to me. best regardsP.S. : I apoligized for my bad english

### Reply 1:
You might want to purchase a couple of spare controller boards - they are not expensive.

### Reply 2:
He stated he had a spare controller and tried that, but the problem returned...Samosamo - did you move controller cables with the controller, or did you use the ones with both test? Did you use the same power supply each time?

### Reply 3:
I have a fairly good sized farm here. I had everything wired up properly on my end for all my miners and was having a similar problem with a new batch I ordered. Was bashing my head against the wall for over a month going back and fourth with parts and RMA. When i got them back I had the same problem as before...Long story short, it turned out I was just crossing the threshold of what the cities <truncated> could provide. It might be worth looking into.

","[
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    ""hardware_name"": ""HB"",
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  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""controller boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller cables"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  }
]"
14278,"Date: 2011-06
Topic: Ok, this is what i don't understand...
### Original post:
I'm familiar with the mathematic principles and computer technology behind bitcoin. However, even with reading alot of the beginner's topics and other forums and such, I'm still left with a couple questions about the implementation of the currency.A few questions:1. Work done: I understand that my computer (mining at 250 Mhash/s) is chugging away to find a nonce for the hashing algorithm that yeilds a solution that fits in the current difficulty level. However my question is: As I watch the block count go up on the bitcoin client, does my computer have to start from scratch each time?? Or am I still working to find one of the predicted 2016 (or whatever it is) blocks for the current difficulty level?2. ""Accepted"": What is a Difficulty 1 hash? And when my computer ""finds"" one, is it a solution to a block that wasn't under the difficulty target, Or is it some other incremental calculation?3. Remembering: Does my solo miner remember the work it has done if I close it or my computer turns off but I get it back to work within a reasonable timeframe and before the difficulty level goes up?? I ask because the ""accepted"" number resets each time..Thanks for reading.. I would greatly appreci<rest of post truncated>

### Reply 1:
Welcome to the forum proverb. I'm kind of new as well, but have been reading as much as I can over the past couple of weeks.1. Once a block is found, the problem changes and your computer does have to change what it is looking for. This isn't a big deal because you have the same probability to hit a block so long as the difficulty remains the same.2. Accepted is the response from a pool for a piece of the work (or share) your machine has done. You will see how many shares you have completed and this number is used to compute your payout when the pool hits a block.3. Your miner will always need to check with the pool to get the latest work. There is no need to remember because your probability of hitting a block remains the same if difficulty remains the same.Hope that helps.SteveA

### Reply 2:
This is a recurring theme in all the significant conversations I have had regarding BitCoin.Some how this ""BitCoin"" system has an ""infinite"" number of ... blocks, addresses ... whatever.But if this is true how can the number of coins max at 21 bl?...Difficulty. I know.But let's say I'm running a pool that is ""big"", could I not make a full list of all block for all Difficulty levels?If the size of a block is limited than it is possible to store every block, when computers get that good(some time in the next 5 years).

### Reply 3:
There will be 21 billions of BTC awarded to miners. No more.However, block will have to be generated, forever. The miners will do that because of transactions fees.You cannot ""generate"" blocks in advance, because each new block contains some information from the previous. Your ""stored"" block would not ""attach"" to current block chain.

### Reply 4:
Currently every block generated creates 50BTC + transaction fee for the person or pool who generated it. Every 210,000 blocks (about 4 years), this is reduced by half. Until eventually creating a block generates 0BTC. The idea is when it reaches this point the transaction fees should be enough to make it worth wild for the network to keep generating blocks.I think you are missing a point. The next block in the series is based off the previous block. So if we are currently at block N, I can only compute block N + 1. I can not compute N + 2 until I know what N + 1 is. Also the difficult changes are based off the computing power of the network. We can make a guess of what the next difficulty will be, but won't know for sure until the last of the 2016 blocks from the previous difficulty is created. So it would be impossible to start generating at the next difficulty level until the previous on has ended. Basically there is no way to compute future blocks until the current block is completed.-SteveA

### Reply 5:
I can answer that.You COULD create a full list of all the solutions... in fact... that's what you are doing by mining.Miner's computers are performing millions of rounds of a cryptographic hash called SHA256. The thing is, is that the computation you are doing to find these solutions are in fact what gives bitcoin its value. There is literally no other way to do it other than these computational workloads.The difficulty is what decides ""which"" solutions are valid. This technically involves finding a solution to the hashing algorithm that falls under a certain number (determined by all the blocks before it). The ""number"" decreases over time limiting the space of possible solutions thereby making it more difficult.By design, the system slowly increases the difficulty thereby exponentially making it more difficult to create bitcoins until the system reaches the limit of the binary granularity built it which gives you the arbitrary maximum amount of bitcoi<rest of thread truncated>
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18232,"Date: 2013-11
Topic: Block Erupter blade Firmware
### Original post:
I ordered some new Block Erupter Blades off Amazon. One of them came without any firmware. Having worked with PICs for some time, this was easy to verify.I also tried to copy the code from a working unit but read protect is enabled.The seller has not responded to any of my requests to return the blade.I know its not much but I will offer a 0.1BTC tip to anyone who can provide firmware to get this hashing.Edit:This topic has been merged with:<link>

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2607,"Date: 2014-01
Topic: [Open] Bitfury Bare Chips ~2.6 Gh/s - Reel #3 (2,000:3,000 Remaining)
### Original post:
Reel #3 is now open. This will be the last reel I am ordering as part of this group buy. You have until the end of the week to send your payments, first come, first served. 1,000 chips have been pledged by someone from a previous reel who has proven they will send payments on time when they commit.I am selling a few hundred of my chips from reel #2. orders in reel 3 for under 50 chips will be placed in reel #2 from my chips. I also have 100 chips that I will accept PayPal for at a rate of $6.25 per chip. You must pay from an account that has a verified address that they will be shipped to, PayPal payments must be eligible for seller protection.

### Reply 1:
Please set me up for 16 pcs

### Reply 2:
Payment sent for 500 chips from Reel 3.<link>

### Reply 3:
I like to increase my quantity to 100 PCs by PayPal. Could you please PM me your PayPal ID? Thank you.

","[
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    ""hardware_name"": ""Bitfury Bare Chips"",
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5051,"Date: 2013-05
Topic: [AUCTION] 62 Avalon chips ordered with ragingazn628 group buy (April 27)
### Original post:
62 Avalon chip ordered with ragingazn628 group buyOrder #10129 made on April 27, 2013<link> price: 6.5 BTCMinimum bid increment: 0.25 BTCAuction end: 48H from this post timestamp

### Reply 1:
Timer removed. End time: <truncated>

### Reply 2:
thks vanycon ;-)

### Reply 3:
wrong section dude ... this is the ""Custom hardware"" section

### Reply 4:
Is this on hand and ready to ship?

### Reply 5:
no, no one received any chips

### Reply 6:
I bid 5 BTC. The amount you paid for 62 Chips.Enigma

### Reply 7:
Order #10129 made on April 27, 2013time is money...

### Reply 8:
u should move your thread in the auctions sections tho

### Reply 9:
Nope, Money is Money.. Time is only worth money if yours is valuable to someone else...My offer stands if you don't find other interest.Enigma

### Reply 10:
if i don't find other interest for minimum 6.5BTC, I will keep them for me ;-)

### Reply 11:
bump! only one day..

### Reply 12:
There will be enough people selling the chips once they arrive, I don't see any reason anybody would pay a premium for a pre-order before it has even shipped. There's nothing to indicate that there will be much delay between, say, first order placed, and 5th order placed. Once the wafers are made and packaged, they'll all probably ship within a very short time of each other. This isn't like BFL where there's going to be months of extra wait time for every week you are back in the queue.

### Reply 13:
^ doubtful.

### Reply 14:
It's entirely dependent on TSMC's capability and availability and how and when Avalon placed their orders with the fab. Not very easy to predict unless you have inside knowledge of one of the two parties.

### Reply 15:
i think 6.5 it a very fair price..

### Reply 16:
last bump before the end.

### Reply 17:
The end.If someone interested to buy at 6.5 PM me.

### Reply 18:
^And yet nobody agreed with you enough to over-pay for chips... Not even you.

### Reply 19:
I've already purchased my chips in steamboat's 1st batch. Also, I don't entirely trust ragingazn.If you do some digging, someone was offering a 66% premium for batch 1 chips.

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11420,"Date: 2011-06
Topic: What makes miners work unique?
### Original post:
When pooled mining, I'm assuming every worker is using the same pool address for the reward, so thats a constant. Is the only thing that makes each miners hashes unique the timestamp + the nonce?

### Reply 1:
There are actually two nonces in mining. One is the 4-byte nonce that each miner chews through from 0 - 2^32. The other is called extraNonce and is inside the first transaction of the block, which is the generation transaction.My understanding is that whenever the miner requests work from the server, the server will change the extraNonce in the generation transaction so that that miner's work will be unique.If you look in the first transaction for a block you can see the extraNonce listed under ScriptSig.The nonce the miner found is in the block itself and in this case is 1019732465.

",[]
5334,"Date: 2013-06
Topic: Should I build a market place for members to buy/sell ASICS?
### Original post:
I'm a developer who has been following Bitcoins for quite a while. I recently made a Bitcoin Trading Game (<link> and I'm thinking of doing another project for the Bitcoin community. One of the problem I've noticed recently is how chaotic the buying and selling of ASICS had been here on this forum. I'm kind of envisioning some sort of website that will make it super easy to buy and sell ASICs. Do you guys think something like this would be useful? How would you want this marketplace to be?

### Reply 1:
This is the marketplace

### Reply 2:
Yeah I know. I find this marketplace super hard to use and I have a feeling the user experience could be better.

### Reply 3:
This market sucks for buying ASIC'S. A lot of scammers and dishonest people. They tell you one thing then do another.

### Reply 4:
No you can't even get inventory

### Reply 5:
I can add a section just for it on, <link> me know your ideas

### Reply 6:
Built it, and they will come! And come! And come!Better yet, built a queue site and call it BitCoinQueue (BCQ, for short). It can be a trading site for queue positions for all future projects that'll incorp a queuing system.

### Reply 7:
the Queue idea is interesting. What about something to facilitate group buy? The group buy threads are a huge mess right now.

### Reply 8:
Now you're thinking

### Reply 9:
I just did a quick google search to see if theres tools for people to manage group buy. The problem is anything ""group buy"" related is groupon stuff or groupon clones. I know people have been doing group buying for a long time so there must be an existing solution out there.

### Reply 10:
This would be great! I'm currently searching for a place to purchase an ASIC but most all companies that sell them have bad rep.

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14540,"Date: 2012-02
Topic: Rainmeter Bitcoin Mining Pool and Exchange Tracker (PXT)
### Original post:
Nice could you add <link> please?i'll drop a coin in your box on the way out the door. i want to use this cheers Graet

### Reply 1:
Thanks, and I added support for OzCoin. Let me know how it works.

### Reply 2:
Bump for a great plugin!!

### Reply 3:
Wow very impressive! Nice work.

### Reply 4:
This looks really great!Could you add support for Eligius?

### Reply 5:
It looks like Eligius doesn't use JSON data for users, but I can probably pull the data from their web stats page. I'll look into it tomorrow (it's getting pretty late for me) and see if I can get something working for you

### Reply 6:
Razer, could you tell me how I can align all the text to the right and remove some of the data that I don't need (i.e. highs and lows for the day)

### Reply 7:
New version:v1.1- Fixed: Deepbit and BitcoinPool not including userData.inc file (oops)- Fixed: Deepbit Est. Worth calculation error- Added: Support for Eligius- Changed: Added leading zeros to each .ini file so they show in order.You should delete your current PXT folder before adding this update or else you'll have a lot of old files left over.@kiwiasian: That stuff is inside the <truncated> file. Open it up and look for <truncated> [MeterPriceHigh1], <truncated> [MeterPriceLow1] (or high2, low2 etc...). Just delete the ones you don't want to see and they should be gone. You'll probably want to change the ""Y="" value for the meters you left so you don't have a blank space in there, but that's not required. (You shouldn't have to change the worker bar settings, those should automatically put themselves at the bottom. If they do mess up though, just check the workerXMeters.inc file)To change where the meters align them self's, inside the same file just change the ""X="" value. That controls where it shows those things. Probably set it to 5 if you want it on the left edge of the screen (not 0 because of the background image border).If you're using one of the pools that I don't use the <rest of post truncated>

### Reply 8:
Thank you so much! This is really easy to customize!(Using fake numbers )Can you change it so that the balance displays the total reward (unpaid + block estimate) rather than just the unpaid reward? I couldn't figure out how to do that myself.Also, I sent a small donation this is a great skin.

### Reply 9:
Still a slight issue with deepbit, not a huge one but i dont think .04btc is worth $8000 lolAlso I know this is for bitcoin pools but any chance you could pull the same info for a Namecoin mining pool? I have one of my miners pointed to bitparking.com and the stats are available via a webpage <link> (no API that I have seen, not even a logon just goes off of your NMC wallet address.) The current NMC to BTC exchange rate can be pulled from <link> Love this rainmeter skin! keep up the good work.

### Reply 10:
@EpicBacon: Estimates usually aren't accurate so that's why I haven't included them for any of the pools that give that data. But if you would like the ability to see that as well I can add it as a option. Thanks for the donation BTW, those are always nice to receive @Iyeman: lol, yeah maybe someday they'll be worth that much. I just rechecked the code and I ended up multiplying the current price by your hash rate instead of how many BTC you've got. I've got a lot of files to manage for this thing and I get confused some times I'll get the fix out tomorrow with the next version.As for doing the Bitparking stuff, I should be able to do that too. How do you think the exchange tracking part should work? Would you want it to just display the NMC to BTC rate or should I calculate NMC to BTC to USD so that it basically looks the same. I supose I could do both also. Let me know you think and I'll see what I can do. I haven't bothered mining NMC's so I don't really know what stats a NMC miner is interested in

### Reply 11:
Both would be cool! If that's to much work then NMC to BTC is what i'm most interested in seeing.

### Reply 12:
It's not really an estimate. Eligius uses SMPPS (no-fee pay per share) so the value in ""block estimate"" is BTC you have already earned in the current round from pay per share. That value will never go down, it can only ever display slightly less than your current actual total (from shares you've submitted very recently that have not been accounted for) so it makes sense to include this in the total balance in your skin.Also, support for Ars Technica (another SMPPS pool) would be wonderful

### Reply 13:
very nice, thank you

### Reply 14:
New version:v1.2- Fixed: Actualy fixed the Deepbit calculation error- Added: Share estimate to Eligius- Added: Support for Bitparking Name Coin Pool (shows NMC -> BTC and NMC -> BTC -> USD)- Added: Support for ArsBitcoin

### Reply 15:
thanks! deepbit looks to be working correctly now and the bitparking one looks good also, sent a little something your way, not much but my minin<rest of thread truncated>
",[]
23330,"Date: 2020-09
Topic: Firmware informatoion from a noob
### Original post:
Hello, I just want to start this thread off by making it totally clear that I have NO knowledge on the issue. I am just wondering what ""OS"" the antminers are running. I understand that there is a linux distro delivered from Antminer. But there are customs out there, so others seem to be able to create their own. What I am wondering is what is that ""OS"", and what would it take to learn some of it. Any recommandations are greatly appriciated! Would be cool to be running my own firmware for my S9's. I am also fully aware that this might be hoping for way to much, and that I should lower my excpectations, but this got me interested so why not give it a try Again, new here so please be nice xDEDIT:Would just like to appologise if I am asking in a stupid way, and also my hottible English. Second language.-Link93

### Reply 1:
Almost all firmare stock and custom are based on Cgminer, it is an open-source project under the protection of GPL (General Public License), it was meant to be open-source and people should work on improving it, but then companies like Bitmain decided they no longer want to publish the source code for their modifed version of Cgminer (BMminer).What most custom firmware devs claim to be using is the BMminer with their own modifications.The best two members who know all about the firmware ""in no particular order"" are taserz and thierry4wd, they both have their custom firmware and they would probably guide you on how to start.

","[
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    ""hardware_name"": ""Antminers"",
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  },
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    ""hardware_name"": ""S9"",
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  }
]"
21618,"Date: 2017-10
Topic: Problem to add miner to antpool . Whatsminer M2
### Original post:
hi guys . i have a Whatsminer M2 from : <link> is good but the problem i have is a can't connect it to Antpool because i find a section in the miner settings i don't know what to write in :<link> when i have entred the servers and worker name in my miner configuartion , the miner statut is blank like this :<link> can anyone help me to this please

### Reply 1:
Use the antpool thread:<link>

","[
  {
    ""hardware_name"": ""Whatsminer M2"",
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8912,"Date: 2015-03
Topic: LightningAsic usb miners based Gridseed GC3355 Tech Support Thread
### Original post:
Hello fellow Hashers!Can someone tell me what size the male 12V coaxial connector is on the Gridseed dual miner? The 5 chip one with the gold heat sink. I have 5 miners coming in the mail without them, so I need to make my own.Size is given in letters like size H, I, J, K, L and so on.What is it?Thanks and happy hashing!Wolfey2014

### Reply 1:
so whats the verdict was the firmware update a legit claim or what?was it just a case of a seller taking a quick snapshot of high hash rates to increase sales?

### Reply 2:
Well, from what tech support on his Skype address told me today, we are apparently getting a controller firmware update tomorrow. So I guess we'll see!

### Reply 3:
how do you download the new firmware? is it for only ppl that bought from lightingasics?

### Reply 4:
I have yet to receive my unit but I'd like to prepare.Does the controller have to be wired or does it work on WiFi? If it needs to be wired I'll have to cable up the space where I'll put it.

### Reply 5:
Not entirely sure what a controller firmware update will do. The problem appears to be that the miners can't operate at high frequencies without additional power. From looking at the usb-miner diagrams posted on GridSeed's github, their choice of voltage converter allows 4 different voltage selections for the core voltage. Once I get my miners I'll try some things out, but in theory it should be possible to increase the voltages in three different ways: 1) solder a couple pins together, 2) use modified USB miner firmware (different from the TP-LINK USB controller running the custom LightningAsic software), which will require connecting a couple pins temporarily unless you have test units, or 3) use a modified cgminer/cpuminer. It's too bad asiabtc is not including the firmware button.

### Reply 6:
Wired -- standard cat5 network cable.

### Reply 7:
Ok guys, here's a new twist in the saga...last night as I was sleeping I heard a loud pop and woke up. I smelled something mechnical/metal burning...turns out one of the silver PSUs which comes with these burned out last night. So now I've got 5 miners sitting there doing nothing...I guess I've got a couple of options...1. Option 1 - Source the same PSU from some place like Amazon. I recall someone had made a post to the exact item on Amazon but can't find it. I don't really want to do this because I've never much cared for these no-name no-warranty PSUs.2. Option 2 - Use a spare Corsair AX860 Platinum PSU I have sitting here to power all 10 of the miners. I trust Corsair and have a long warranty on that PSU.Option 2 requires knowing something about electricity, watts, amps, etc. I don't know shit about this other than the basics and/or following instructions provided by those smarter than me in this area. That being said, any one care to make a few LTC to help me with this Option 2?

### Reply 8:
Thank you.

### Reply 9:
Here is a temporary solution (or a definitive one if you don't care about mining BTC)1. uncheck BTC on the controller webpage, and save2. turn off3. wire all 10 cables to your second PSU (4 reds, 3 reds, 3 reds, 4 whites, 3 whites, 3 whites, Ground, Neutral, Phase)4. turn on, happy LTC mining In scrypt only, power consuption is low (70W total) and one PSU is largely enough.

### Reply 10:
Thanks EricKennedy...I'll give it a shot after breakfast, but I think the biggest challenge will be to try and get all those tiny wires crammed into the screw terminal.I never tried dual mining because everyone said it was very unstable...and I figured these were annoying enough to keep running for LTC alone, why compound it with trying to deal with dual-mode? Can you or anyone else confirm if this is the correct replacement PSU from Amazon? (<link> The PSU I got with the miners states: Unbranded model# S-360-12; Input 100-120V @60Hz; Output +12V - 30A

### Reply 11:
It will work.Note: If you use a standard computer PSU, you should put a load on the 5 volt line. On many PSU's that is desirable to stabilize the 12 volt line.

### Reply 12:
I am guessing that is what ""overclock"" is that will void your warranty. Using higher hash rates (in LTC mode) without changing voltage is one thing. That should not damage the miner (no thermal problem). But, overvolting can cause damage, and shorten the life. But, a few more LTC today may be worth a lot more than no LTC 1 year from now.

### Reply 13:
Thanks mate! The one I linked comes with a 1 year warranty so at least it has that going for it.

### Reply 14:
Ok, I've hooked all 10 up to the only working PSU. It was hard/tricky trying to get all those little wires crammed into the screw terminal. For those who care:Before: 2 PSUs, all 10 miners --> 108wattsAfter: 1 PSU, all 10 miners ----> 96 watts

### Reply 15:
hhhmmm sorry, but if I open this link, I see a power supply with 48V and 7.3 A. That thing does not work, to much Volt (48V)!If you<rest of thread truncated>
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    ""hardware_name"": ""USB miner"",
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    ""hardware_name"": ""TP-LINK USB controller"",
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    ""hardware_name"": ""cgminer/cpuminer"",
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  },
  {
    ""hardware_name"": ""cat5 network cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""silver PSUs"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Corsair AX860 Platinum PSU"",
    ""hardware_is_owned"": true
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9798,"Date: 2016-04
Topic: External heatsink on Psu
### Original post:
Mods please feel free to move this if it's in the wrong sectionJust a curiousity question really. I've got an rm1000 PSU and find its gets rather warm on the underside of the unit (opposite side to the fan) where all the sockets are. I've currently raised it with a large rectangular piece of aluminium but wondered if it was worthwhile sticking a heatsink on the bottom with a fujipoly thermal pad?What do you guys think?

### Reply 1:
Put it on a grill with the fan pointed down.The hot side will point up.Target sells a cheap grill for 8 bucks. edit > $6.49I have a link give me a minute <link> fan pointed down it pulls cooler air from below.you can try an infra red gun to find the hot spots<link>

### Reply 2:
I have that psu. And the lift from the grill. Helped. I also pointed a 20 inch box fan at three psu's sitting on that small shelf.OneLast thing the psu is noted for overheating so try keeping an eye on it.

### Reply 3:
Nice one cheers Phil. Wouldn't be able to get the grill as I'm in the U.K but I'll have a looks at similar shops when I get a chance and see what I can find. Would the heatsink work so you think or should I not bother?

### Reply 4:
Oh I do keep an eye on it. Don't want any fires lol. Its running 2xS3's at 243m so not like its massively taxed and my room is only abour 18-20c ambient so not hot in here either. Just wanted to try and prevent any issues while I can.

### Reply 5:
No need to cool the PSU. If for any reason it gets too hot, it will just shutdown.Inside a computer case a PSU intake is very hot and it doesn't have issues so with your PSU being outside in the open air shouldn't be a problem.

### Reply 6:
that psu has been know to have thermal heat failure due to not shutting down.I will find some links<link> are more. links

### Reply 7:
So just the RM750 and RM850What about CX750?

### Reply 8:
Phil is pointing you twords an amazing tool I use one similar to this more often then I ever thought I would. So nice to walk in mining area and get reads around machines and see my CFM's get maximum effect. With summer heats coming (and raising some already) I use it more and more. I'm surprised on RM series I have 2 RM1000's and they always worked fine for me no heatsinks. So not sure if made nicer then smaller ones or what. But I have had them for quite a while with good luck.

### Reply 9:
rm1000 is very good gear but it is pretty hot in one spot. I mine with it in a pc 2 r9 390's doing eth coin pulls 550 watts.case has a lot of air flow so it is all good.

### Reply 10:
Mines running 2 S3 oc'd to 243m, 2x u3 and a rbox 110 running 200m for now. Phil is bang on there's one spot that gets warm. I'm going to find a rack and mount the u3s and PSU on there with a couple of fans underneath to cool it all. Just got to find the time to get the rack and change the set up

### Reply 11:
Well finally managed to get a rack today. Had to go to the kitchen section of the supermarket 3 tier stackable wire rack. Heres the set up:-Base level under he first rack is open.First rack up has a 120mm fan on.Second rack has two U3's on.Third rack has the rm1000 (fan facing up) with the a gecko stick as the cherry on top keep cooling thanks to the rm1000 fan.The u3's and psu are staggered so the 120mm fan blows onto the u3's and half the hot side of the psu, plus the u3's draw air down from the other side of the psu. Sound ok or should I have the fan facing down on the psu?I thought hot air rises to more chance of the heat being forced out the back of the psu if the fan is facing up

### Reply 12:
I could just be lucky then I have had mine since GPU mining day's long ago. Eventually they mined asics, but that have lasted a long time. They have went through winters, summers. Mining in house and mining in a mining area.I never had a issue with all that so I still think a good gpu. Although I admit when getting PSU's later on I got the EVGA to get 1300 vs 1000. And now it's all about the server psus.

### Reply 13:
I have similar experience with Fortron 500W-750W single rail series. All of them have insufficient cooling of synchronous mos-fet rectifier, so they blow before any protection shut down the PSU. Thery also put plastic insulation sheet from one side, so overall airflow is poor. Only solution is keep load at 12V less than 80%. They have 5 year warranty so opening PSU and reworking power mos-fets and heatsink is not useful.Sometimes I buy used PSU for about 50USD and RMA my failed. They always return full price instead of repairing my PSU.

### Reply 14:
yeah running atx at 50 to 80% works for many pieces of gear.A lot of atx simply can't do 90% or more at a 24/7/365 pace.

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    ""hardware_name"": ""20 inch box fan"",
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    ""hardware_name"": ""infra red gun"",
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    ""hardware_name"": ""heatsink"",
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    ""hardware_name"": ""2xS3"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""RM750"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""RM850"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CX750"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2 r9 390's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2x u3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rbox 110"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rack"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""120mm fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""EVGA 1300 PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""server psus"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Fortron 500W-750W single rail series"",
    ""hardware_is_owned"": true
  }
]"
24022,"Date: 2022-10
Topic: Newpac Miner 0 chips found error
### Original post:
Has anyone else seen this ""0 chips found"" error. I have the latest Zadig installed and the windows driver.<link> when I the .bat file I get<link> sure what is wrong here. Any help would be appreciated.Thank you.

### Reply 1:
Quoting for images to show:

### Reply 2:
The problem is in the line you are using to run cgminer, we need to see how are you calling the program and what hardware are you using to help you with this.Here are some useful threads:<link>

### Reply 3:
Do you mind sharing what is inside your .bat file config?There might be another reason why it shows 0 ASIC/zombie mode.If your miner is connected directly to the PC/laptop, not on the hub with its own power your PC/Laptop is not giving enough power to your miner. You can lower the voltage or reduce the frequency to try if it's hashing then gradually increase it later until you found the best settings for <truncated> didn't work then there is official thread of this Newpac you can find it here <link> above links are not for Newpac official thread.

### Reply 4:
It's Windows so you might want to try reinstalling it in case the driver has not been loaded yet.I've never heard of Zadig, so maybe it doesn't automatically start the driver. If that's the case then go to Device Manager and start it manually.

### Reply 5:
Here is the .bat file.<link> have the miner connected to a usb hub<link> use Zadig to install the driver because that is what the official thread said to use. It has been installed twice.Thank you.

### Reply 6:
Do you mind switching to another pool to try? I'd like you to try switching to <link> would you mind playing the settings under your suggested difficulty you can try this one --suggest-diff 5000 or increase the difficulty if it doesn't work.Also try this one Code:cgminer -o <truncated> -u my_btc_address -p x <truncated> --gekko-newpac-freq 100

### Reply 7:
You may want to move this into mining hardware or mining support, or ask directly in the official NewPac support thread.

### Reply 8:
Ok so I tried cgminer -o <truncated> -u my_btc_address -p x <truncated> --gekko-newpac-freq 100It crashed. I then removed <truncated> and I got the same problem.<link>

### Reply 9:
Have you replace the my_btc_address with your Bitcoin address?It seems that there issue on the driver you need windows have driver signature verification by default if you disable it the miner might work properly. If nothing works better bring your issue to the official thread here <link> can post it there and link this thread there.

### Reply 10:
I did insert my own btc wallet address. I will post over on the newpac forum as well.Thanks.

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    ""hardware_name"": ""Newpac Miner"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""PC/laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb hub"",
    ""hardware_is_owned"": true
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16894,"Date: 2011-08
Topic: Black Screen?!?! Help!!
### Original post:
Hi, I am having a problem with my PC I tried a 2 video cards and they seem to stop displaying after the starting windows screen. It just stays black, So i tried to load linuxcoin only and it loads the nice graphics and which one to load then after that just a black screen...

### Reply 1:
can you provide more info like which cards and which mobo you are using?

### Reply 2:
it probably because you have it on display 2 instead of 1. switch your vga cable to the second video card or switch pci-e slot

### Reply 3:
i would pull one card out and try to see if u still get the black screen if not, then switch card and test each if both is working then its most likely setting errors.

","[
  {
    ""hardware_name"": ""PC"",
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    ""hardware_name"": ""video cards"",
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  },
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    ""hardware_name"": ""linuxcoin"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""cards"",
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    ""hardware_name"": ""mobo"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""vga cable"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""pci-e slot"",
    ""hardware_is_owned"": false
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15761,"Date: 2016-06
Topic: Support Segregated Witness ASAP!
### Original post:
Support Segregated Witness ASAP!The following is a list of companies and projects which have stated they will support segregated witness.<link> everyone support this and Ask the mining pool you mine at to Upgrade to segwit ASAP. the sooner we can get this Nice Pieces of code activated the better.

",[]
4851,"Date: 2013-05
Topic: [Ann] FUNDED ASIC, Chips available for purchase now
### Original post:
Updated OP, 7501 chips left

### Reply 1:
Hey steamboat,Any status on your funded development efforts? Any preliminary plans for density? I'm thinking about ordering some more chips and am curious about how your plans compare to burnin? Will your board assembly take place in the USA? Thanks,-Jay

### Reply 2:
Hey Jay,Yes, we are moving along quite nicely with board dev. I am not willing to give any initial numbers yet. Preliminary density is between 10-16 chips per board, depending on which design we go with. Board assembly is being sourced oversees and in the US, depending on lead time. Assembly will be taking place in the US as time is of the essence once the chips arrive.

### Reply 3:
updated chips available in batch 1.I should have more solid numbers on board fab and assembly prices early next week.

### Reply 4:
Any idea when this will be decided? I'm waiting to pull the trigger, not knowing what I should plan for.

### Reply 5:
I will know more this week. I have offered a solution to another member that I will open to the public:For those wishing to purchase complete rigs, I will buy/sell enough chips to complete their order depending on the amount of chips used per board. IE if you purchased 100 chips to make 10 boards using 10 chips, and we use a design with 16 chips per board, I will buy the remaining 4 chips, or sell an additional 12, to round out your order.This does not mean if you purchase 100 chips for 10 boards I will sell you an additional 60 chips to equal 10 boards.I am in the process of replying to emails and orders, I will update the thread once complete.

### Reply 6:
That is pretty funny actually. Just 2 questions:1) What are your plans for PCB design and estimated costs to finished product?2) Do you have a link or at least a preliminary pinout diagram of the chip?Thankx.I'm trying to learn more about this stuff.

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    ""hardware_name"": ""board"",
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    ""hardware_name"": ""complete rigs"",
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  },
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    ""hardware_name"": ""PCB"",
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5004,"Date: 2013-05
Topic: [Ann]Purchase ASIC now: 3,714 available
### Original post:
""3,714 available"" - Howdy, big spender!

### Reply 1:
Just sent funds for 16x ASIC.TX ID: <truncated>

### Reply 2:
Orders received, recorded, and replied.

","[
  {
    ""hardware_name"": ""ASIC"",
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  }
]"
20337,"Date: 2015-04
Topic: help
### Original post:
I was mining more than 18 hours with butterfly lab Jalapeno 5 gh/s ,im using bitminter and i didnt get any coins yet ?do i need wait 24 hours untill they will pay me?

### Reply 1:
what pool are you using ?

### Reply 2:
You just should read statement of pool where you are mining.

### Reply 3:
At 5GH you're going to be waiting a LONG time for ""coins"". Most pools you need to set the payout level, most usually default to 0.1BTC, which at 5GH will likely take you about 2 months.

### Reply 4:
Thank you guys i already sorted it out i need make more than 0.1 btc that i could make auto cash out .im mining on bitminter pool

### Reply 5:
good luck

### Reply 6:
i use guiminer in a poolusing cpu, my mining rate is 5mh/s and make 3 shares in 5 minutesusing gpu, my rate is 14mh/s but he dont make any share in all day

### Reply 7:
No offense, but 5mh/s is literally nothing in btc mining anymore. The reason your not seeing any return is because you haven't earned enough to get into a payout. You will eventually get enough and get paid out. That could be at least a week and it will equate to like one hundredth of a penny haha. If you want to see a little more earnings, spend 35 bucks on a usb asic. They will mine hundreds if not thousands of times faster than your cpu. That or you can try your luck with cloud mining on cex.io... But as far as mining btc with cpu's go it's almost pointless now.

### Reply 8:
i know thatbut i cant buy asic usb. here in brazil is expensivei only wanna know why the gpu cant share like cpu

### Reply 9:
you better off using cpu and/or gpu towards litecoin mining or one of the other altcoins. asic is a must for bitcoin mining.

### Reply 10:
i know thatbut i want to know why my gpu dont make any shares?

### Reply 11:
Hi guys I am new to bitcoin and I have seen videos on how to mine to help me get started but even though I followed all the directions my slush account says that my workers are offline and that I am not generating bitcoins I am having trouble fixing this I am using GUIMINER can someone help, I am running it on my laptop and using a nvidia 880 graphics card.

### Reply 12:
You will get very very little mining BTC with a GPU. I highly suggest not doing it a laptop 24x7r.If you are wanting to learn you can get usb stick miners to learn it. Or go with a all in one asic miner. It really depends on your electricity price.

### Reply 13:
is their a tutorial for those programs?

### Reply 14:
Just study mining section on this forum. However, mining with a laptop is absolutely not recommended.

### Reply 15:
With Nvidia look up Cuda mining specifically.Again doing it with a laptop is a bad idea over time.

### Reply 16:
If anything maybe try to buy a cheap ASIC device if you want to mine. Mining on a laptop will cause it to heat up quite a bit which will ruin it over time. If you are set on mining with it try an alt coin not Bitcoins.

### Reply 17:
He will never make ROI with cheap ASIC machines, it's not 2012 anymore.

### Reply 18:
I would not say never it depends on his electricity price. Sure the 3 month ROI is gone most likely forever, but some with low electricity will still ROI granted it takes much longer.

### Reply 19:
Please stop, mining using GPU only wasting your power & shorten your laptop lifetime. Nvidia is not good at mining though.With today's difficulty, even small asic will hard to ROI.

### Reply 20:
It truly is sad this has been said hundreds of times, yet so many are convinced they have a laptop that beats the odds. To have Nvidia or ATI card means there is a good chance it was not some crappy laptop, and paid a decent amount for it when it was new. If they want to start slow they could get a raspberry pi and some old usb miners. Chances are 2 asic miner usb's would beat most laptop GPU's on mining BTC.

### Reply 21:
Gridseed Blades are cheap today, I think it's ok to begin, even if you want to mine for fun. Don't expect ROI

### Reply 22:
I would suggest waiting till next generation currently. A lot of people are still running gear they make very little or possibly even lose on. A2's have been king to long. No one is throwing huge R+D into Scrypt.Personally I highly suggest waiting.

### Reply 23:
Waiting or...buy BTC directly

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    ""hardware_name"": ""usb asic"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""nvidia 880 graphics card"",
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  },
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    ""hardware_name"": ""usb stick miners"",
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  },
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    ""hardware_name"": ""all in one asic miner"",
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    ""hardware_name"": ""asic device"",
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16392,"Date: 2023-01
Topic: lowest hashrate that hit a block in the last 3 years
### Original post:
Do any of you know how low the smallest known hashrate was that landed a block hit, say in the last 3 years?

### Reply 1:
Since we can only estimate the hash power of some mining pools and there are many unknown miners with unknown hash rate, it's impossible to answer to your question. It's possible that a solo miner has found a block with a very low hash power, but we can't know how much hash rate is owned by any of individual miners.

### Reply 2:
Do you perhaps mean what is the block that dropped the hash rate the most in the last 3 years? That's 689,472, which dropped difficulty by about 28%, from 19,932,791,027,263 to 14,363,025,673,660. Otherwise, if you're asking how many hashes it took the least to solve a block, then that's unknown. In the end, it only takes one hash to solve a block.

### Reply 3:
Earlier this year a Compac-F running 350GHs hit a block on the -ck solo pool. That low enough for you?

### Reply 4:
IIRC he had about 1.75th worth of them say five sticks.Pretty good I would say.

### Reply 5:
Actually, I hit with 9 Compac F sticks attached to a HP Omen PC... Hence the name ""TheOmen"" but nothing more than a simple Windows PC a few high power hubs and some USB miners. My total BTC farm hashpower at that time was between 8.2 - 9.2Th but the system that hit was running 9 Compac F sticks totaling about 3.4-3.6TH.

### Reply 6:
Thus you are likely the luckiest block hitter in the last 3 years.To scale the luck my mine has had 1.5ph to 2.0 ph last 3 years and we have not hit a block. we don't mine solo we mine pps and even with 200x the hash for last 3 years no block and about 1.131.035.007.23 coins to his 6.3 or so for the 1 block

### Reply 7:
They say even a blind squirrel gets a nut once in a while

### Reply 8:
Well ... every single block is found by a single miner.Each block found on each pool is also found by one account on that pool.It doesn't really mean much to say that someone with a low hash rate found a block,since in reality that is how blocks are found.Or to put it another way One of Sledge's 390GH/s CompacF ferraris found a block ... and that is a single chip miner.

### Reply 9:
How do you know your miners didn't hit any block when mining to those PPS pools? it's pretty hard to keep track unless you use monitoring software that gives you alerts when one of the miners hits a block, the miner log itself would reset with every reboot so your miners could very well have hit a couple of blocks without you knowing.

### Reply 10:
I check a lot. but it is possible i missed one.

### Reply 11:
Oh you have no idea. I still laugh about me almost falling out of bed when I saw my wallet balance!

### Reply 12:
I think it is awesome someone hit with the USB stick miners! Just curious, have you added more compacs since then? Are you getting any of the new R909 pod miners?Do you have any of them mining on kanopool as well to diversify or just put them all on ckpool for a higher hash rate?

### Reply 13:
I'm currently running 40 Compac F's and 9x 2 Pacs on a private pool which is under development. I do use CK'S and Kano's pools however both as backup pools. Both are great options.I'm not running any R909's at this time. I am however running several Apollo BTC's as well as and an ever expanding number of S19 Pros. Gotta keep hope alive!!!!

### Reply 14:
That's awesome. Would love to see a picture or video of all that. What is the total hashrate with all that running?

### Reply 15:
Pi3 = 10 x Compac F's = 3.75 Th/sPi2 = 15 x Compac F's = 5.7 Th/sPi1 = 15 x Compac F's = 5.7 Th/sApollo1 = 6 x Apollo BTC (On Balanced) = 15Th/sApollo2 = 6 x Apollo BTC (On Balanced) = 15Th/sApollo3 = 4 x Apollo BTC (On Balanced) = 10Th/sApollo4 = 6 x Apollo BTC (On Balanced) = 15Th/sSingle Apollo = 1 x Apollo BTC (On Balanced) = 2.45Th/s S19APro110Th = 7 x 110Th = 770Th/sS19JPro104Th = 3 x 104Th = 312Th/sAdding this week or early next:1 x S19APro 110Th = 110Th/s6 x S19JPro 104Th = 624Th/sSo if all goes well next week I should be pushing about 1.88Ph/s

### Reply 16:
WOW! Is all of that solo mining or is any of it participating in other pools that have frequent payouts?

### Reply 17:
Currently all solo on a pool that's under development.

### Reply 18:
I have been asked to not give info out on this pool so I will say 1 thing I am pointing 1 s19 pro to his pool.

### Reply 19:
Actually I think its important to note that the pool which is under development is a joint effort between myself and another member of the forum.

### Reply 20:
possible to know if you have to hit a block, unfortunately on the series 19 they removed this information...see for yourself on the photo, obviously, it does not say if the block has been validated or even if it is orphaned One block of BTC and BHC

### Reply 21:
Still can't comprehend why they removed that ""FoundBlocks"" stat.

### Reply 22:
Maybe people got confused because the information<rest of thread truncated>
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  {
    ""hardware_name"": ""Compac-F"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HP Omen PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Compac F sticks"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""R909 pod miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac F's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2 Pacs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Apollo BTC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19 Pros"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19APro110Th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19JPro104Th"",
    ""hardware_is_owned"": true
  }
]"
7069,"Date: 2014-02
Topic: Using ASIC Miner Prospero X3
### Original post:
Hello everyone. I recently discovered the Prospero X3 Miner (<link> and it's performances are so high that I decided that I would start mining bitcoins! The thing is, I don't know what I'll need when it will be at home. Does it work alone like the KNC Jupiter or I simply install it's drivers to a computer and run cgminer from the computer? Also, would a windows computer work with it? Last thing, I might take a bitcoin loan from it so how long would it take to refund 4-5 bitcoins with this miner? Thanks already, James

### Reply 1:
Its a stand alone miner, so you will need an internet connection.No one knows what the difficulty will be when these will be delivered, so you can't calculate the return it will generate (if any).The Black Arrow 28nm 100Ghash Bitcoin ASIC thread.

","[
  {
    ""hardware_name"": ""Prospero X3 Miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""KNC Jupiter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Black Arrow 28nm 100Ghash Bitcoin ASIC"",
    ""hardware_is_owned"": false
  }
]"
1233,"Date: 2013-08
Topic: [GROUP BUY] HASHFAST/COINTERRA 1.55 BTC for 10GH, JOHN K. ESCROW, BEST $, 3 LEFT
### Original post:
Current escrow wallet account balance is 23.24 BTC.The target is 60.6 BTC paid & confirmed so we can send an order to HashFast.Tip o' the bottle to ya! hehe

### Reply 1:
my coins came in so i am sending the 1.55btc now

### Reply 2:
Roger that phillip. Will keep an eye out.Guys, I'm gonna buy 2 more shares of my own. That moves me up to 8 shares (to be paid) or 20% of any miner we buy together.That way I'm not outweighed (at least equal) on voting.1 share left!Also, I need to go offline to take care of the ebay shares (4 of them).Thanks again!

","[
  {
    ""hardware_name"": ""HashFast"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cointerra"",
    ""hardware_is_owned"": false
  }
]"
10485,"Date: 2017-09
Topic: Canaan.io has  ""Bulk Packs"" and ""One Pallet Solutions"" for Sale
### Original post:
Damn. Have these been around before? They're intended for import businesses apparently. 60x 741 miner + 3x Controller for $43,000or60x 741 miner + 60 PSUs + 3x Controller for $49,000

### Reply 1:
Thats actually not a great deal at $98/th

### Reply 2:
If you don't want an S9, its about the best deal you can get (unless you know another good option?)

### Reply 3:
The counter argument is it's a good deal because Avalon reliability is said to be much better than the S9

### Reply 4:
Honestly that's not a difficult benchmark.

### Reply 5:
Honestly, the shitty ebit miner has better reliability than S9.

","[
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    ""hardware_name"": ""741 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ebit miner"",
    ""hardware_is_owned"": false
  }
]"
22111,"Date: 2017-12
Topic: Internet Outage Risks - Antminer S9/L3+
### Original post:
Do the S9s or L3+s have any history of burning on internet loss? Ive read troubling posts about S5s & S7s. Any info would be awesome, I apologize if the L3+ question is altcoin and against rules (I use MPH and auto-trade to BTC)

### Reply 1:
No. This was a known problem with the early batch (54 chip) S7s using firmware from 2015. The L3 and the S9 will not burn up due to network problems like the S7 did.

","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  }
]"
4703,"Date: 2013-04
Topic: avl asic
### Original post:
hey guyslong time lurker, first time posteri've got an avl asic got lucky and ordered early batch oneto be honest NOT IMPRESSED, yeah i cant make one point twenty one jigga watts, but what the hell am i ment to do with it after this rush is overplus the btc price changes up and down every 5 secondsi also got a rig with a 7970, and i just ordered a couple of 7990's to upgrade my rig ... with that, i can play games and when im not gaming i can make some btc'sbut the question is what the hell am i ment to do with the asic in 6 months time when its a paperweight?what the hell is the point of mining coins when its $300 a coin and half a day later its $30?sorry to be a downer, but with all the dos attacks, and unstablity... im kinda wonder why to bother with this thing?

### Reply 1:
Keep mining... when it goes back up to $266 sell em all and retire.As for it being a paperweight if you really don't want the hassle auction it off... still bet you get a pretty penny for it.I don't see the issue really but then again there is value in BTC whether it is 266 one day and $50 the next. I'd prefer to have an Avalon humming away as opposed to the few X6500's and the 7970 I put into my PC for the kids.

### Reply 2:
dude, even if they go back up to $266 some russians will dos it and i wont be able to get the order out in timeas you said at least with a 7970 u can play games when your not using itit would be nice if with the asic i could somehow hook it up as a gaming card and have some fun with it, but the fact is, its gunna make a ton of btc's now, which might be worth $300 tonight, and might be worth $1 by the time the order is filled.sorry if it sounds like im having a rant but ive not had a good luck in my life and just when i thought i had a money making machine the shit becoming as unstable as a 7970 on 1400 with no coolingive expressed my concerns to some members i know here by pm, but the fact is ... being asic, or a 7970, and old laptop running cpu mining whats the point if it go's from $300-$3? i mean, we all got bills to pay where do we really all stand with this? where is the market going to stabilise? can mtgox stay online for longer than it take me to eat a big mac? ? ...etc

### Reply 3:
take a chill pill

### Reply 4:
If you don't want it, I'll take it off your hands for 10 bucks.

### Reply 5:
Sell it. To me.

### Reply 6:
Hold on here. Are you complaining that the Avalon mining unit is unstable as well? How so? If this is an issue you are having please post in the Avalon users thread. Holy nerd rage about the btc price does not belong in the custom hardware section. I do believe there is a speculation thread/section. You can vent there Happy mining!

### Reply 7:
Meh. At the current exchange rate you're still going to make your ROI in a couple of days. If after that you want to sell it, let me know. Been mining since 2011, there are ups and downs, I weather the downs for the ups.

### Reply 8:
I have a brand new 7970 unopened in the box. Plus 2k usd. It seems not being able to play games on your miner is a deal breaker. But wait, there is more. I will throw in two Level 90 WOW characters a Shadow Priest and a Death Knight.

### Reply 9:
Maybe you should think about doing something else. If you are only in this for some arbitrary price, then I would suggest that your in Bitcoin mining for the wrong reason. Yes an incentive to keep mining is needed but this is not a get rich quick scheme. Many of us are truly committed to building an alternative currency and store of wealth. This is be a long road and this is just the start of the issues and challenges we will face. You should sit back and reflect what does Bitcoin mean to you?

### Reply 10:
10 bucks or ten btc?because with one i can buy ten hamburgers tomorrow and with the other i can buy either 10 hamburgers and or 10 ferarris depending on the hour of the day, the russian, and weather mt gox is online or notthe unit itself it relatively stable (has crashed twice in the last week and a half) but whats the point if on min its making me $900 a day and the next its making $9how would this compare to a train? Which i could also afford?thats the whole point of this thread dude, im in this for cash, there is none, i want outits like earning a million dollars a week but the ATM machine you cash out of is offline 23.5 hours a day and takes 4 hours to dispense fundsas much as we all like to sit here and say ""were making the future a better place"" ""were decentralizing money away from THA MAN""the real question is are we doing either? the future is now controlled by hackers who either hack your account once you got a ton of money in it, and ""THA MAN"" has ben replaced by russian techno hit squads that that manipulate the currency at a whim and a command to a botnet

### Reply 11:
Don't feed the troll guys. Either this guy does not have an Avalon or has no idea what he's talking about. Right now they are still making ove<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""7970"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""7990"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""X6500"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""old laptop"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon mining unit"",
    ""hardware_is_owned"": false
  }
]"
11248,"Date: 2023-01
Topic: Antminer T9+ component
### Original post:
Hi.. anyone knows whats the name of this component and where can I find it? thanks!<link>

### Reply 1:
It's an inductor. Do not know where you are in the world however you can find them at Digikey / ebay / amazon / aliexpress and so on. Where you are will determine the best place to buy it.<link> might also have some luck googling for local electronics repair places near you, they will probably have some around. Did you knock it off or did it fall off or did it heat up and crack?You will get a a bit more help by moving this post to: <link> left and click on move post.-Dave

### Reply 2:
this T9+ was working on a friends house in venezuela (I was not in venezuela by then) and to be honest I think he did not care much about the maintenance of it.. he told me one day the hash rate just drop off half. Now that I have the T9 in my hands I teared it down and noticed this issue... Actually all 3 boards are in the same condition (inductor drop off) I start thinking the problem are not the inductors, this is just the result of another bigger problem :/ please take a look of these images and tell me what you think.. thanks!! <link>

### Reply 3:
Hard to tell from just images but that looks like corrosion. They do get hot and if there were running in a humid environment that could be the issue. More resistance = more heat = more power needed = more heat. Add in some moisture that is being cooked off by the heat and generating more corrosion and it's going to pop.Unless you have just about free power you are going to loose money running a T9+Back of the napkin math at $0.02 a kwh are you are generating 0 profit. Anything above that cost you are loosing money.-Dave

### Reply 4:
yes.. I have free power. well I think I am just gonna replace them and hope everything goes well..thank you very much for your help!

### Reply 5:
You can find this component at Zeus Mining. <link> I think you need to check the T9+ hash board repair manual. The manual has instructions on the clamping circuit. If L5 falls, it is also necessary to check whether Q2, Q7, and U88 are damaged.

### Reply 6:
Take note zeusbtc is not selling 1pc their minimum moq is 20.Only buy in your local electronic shops near you to buy 2 or 3 pieces as extra if ever the first replacement is busted.Also, I do recommend to follow the instruction under link given by Rodemi under the name T9+ hashboard repair for step by step troubleshooting because it might be not inductor issue.

","[
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    ""hardware_name"": ""Antminer T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""inductor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T9+ hash board"",
    ""hardware_is_owned"": true
  }
]"
11173,"Date: 2022-07
Topic: What's stopping companies making an actual space heater bitcoin miner for home?
### Original post:
Every time I read something about a bitcoin miner being a space heater it ends up being either a joke, or a vaporware.Is there anything fundamentally wrong for making this?, I would be happy to buy one that looked good and wasn't very noisy.For example, have a look at this great little space heater:It looks good, produces nice heat, and it's not crazy loud or annoying at all. It has 2 modes, low(750W) and high(1500W). It's a great little machine.Now, for home miners, look at something like the Apollo BTC:It also looks good, produces nice heat, and it's not crazy loud or annoying at all. It has 3 modes, ranging from around 100W to 300W or so generating about 2-3TH/s. It's a great little machine.Why hasn't anyone made a great looking space heater with something like that?You could make basically something like the Vornado, but internally instead of just having a simple heating element, you would have something like 10 times what the Apollo has. There's enough room to do that.It would run nice and quiet, produce enough heat, look great, consume about 1000W-2000W or so(configurable) and generate around 20TH/s. It would be a great little space heating machine that gives you a few sats w<rest of post truncated>

### Reply 1:
Mining gears manufacturers make more, better and easier money when selling to industrial-scale miners, they don't even make those loud 1200-1500W gears anymore, it's all 3kw and above now, they know that mining is no more a home thing, and only large farms will afford to buy a dozen miners each, so give them what they want, a large farm rather manages 10000 gears of 3.5kw than 30000 of 1200w gears, also the manufacturer rather deal with 10,000 possible warranty claims, support, and shipment that dealing with three times the number.So the majority of buyers are happy with these loud gears since they don't mine at home, the people that make them are even happier, why bother making a small miner? this will cause them many problems, 10k space heater miners will be bought by 10k people (maybe half the number of they are lucky), so instead of dealing with 1 client that can place a single order of 10k miners, you will need to deal 10k or 5k clients, many of which don't understand a damn thing about mining or/and how to set these little miners up.Also, manufacturers are bottlenecked by chips supply, labor and time, so if you have 1 million chips, 100 engs, and 3 months, it makes a lot more<rest of post truncated>

### Reply 2:
Having modded tons of different loud miners into quiet miners that will heat a home no one will buy an expensive space heater miner when they can mod a miner.Also pcs with two gpus can be quiet. they mine btc indirectly.

### Reply 3:
Yeah, absolutely right. Most experienced miners would be able to do this by tinkering with the devices themselves. There's no market for it really.And having a custom built PC for heating/mining could be a great idea as you can also use it when not mining for many other purposes.For example this enclosure for a PC would be actually perfect, and very similar to the space heater I had in mind:

### Reply 4:
I have that rig in white. with this card<link>

### Reply 5:
Yes, it is, you can get the Vornado for $150 and the Apollo for $899.99, let's assume 1000W running for 6 hours a day for 6 months at 20cents/kwh for the heater and you have an energy bill of 200$ each year, but you paid in an advance for nearly 4 years. Let's assume you will keep the Apollo nonstop for heating purposes and you've got 18$ a month ignoring power.So, why would anyone bother with these, especially since as years pass your machine will be less and less efficient compared to the newer models?Spot on, this is common everywhere and this is why in some cases manufacturers of goods do not even sell directly to the consumer, they unload all this to resellers and let them deal with a mob of shoppers that will probably encounter every single problem in the universe. One tiny fraction for the profit and you can cut a lot of personnel in support and a lot in accounting, you won't be faced with tens of failed payments, chargeback, and everything else.You can't without using air but you can reduce the noise by playing with the numbers of chips and their settings, of course, this would end with a mining machine mining at 1/3 of its capacity and not being a lot cheaper either. I jus<rest of post truncated>

### Reply 6:
hmm, I don't think the number of chips is relevant to cooling, see I am not a thermodynamics expert by any means, but my understanding is that heat is just a form of energy, so when ""electrical energy"" passes through the chips of the miner it will convert to "" heat energy"" of the same amount, so a 1000watts electrical energy will always create a 1000 joule regardless of how that ""electrical energy"" is being utilized.You are right about using more efficie<rest of thread truncated>
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    ""hardware_name"": ""Apollo BTC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Vornado"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PC with two GPUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""custom built PC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""rig in white"",
    ""hardware_is_owned"": true
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]"
13240,"Date: 2014-09
Topic: BFGMiner 4.3.0: modular ASIC+FPGA, GBT+Strtm, RPC, Mac/Lnx/W64, auto-solomine
### Original post:
NEW VERSION 4.3.0, JUNE 30 2014I plan to move 3.10.x to stable soon, so if you're still using 3.5.x, please upgrade and report any regressions (note them as such).Human readable changelog:URI parameter #getcbaddr to request coinbase address from bitcoind or compatible servers for solo mining.When running on systems with a configured Bitcoin Core server, it is automatically configured as a final failover and used for local block submission (GBT pools only) to reduce the risk of a stale block.bitforce: Implement some last-minute Monarch interface changes.zeusminer: New driver for these scrypt ASIC devices.Full changelog:Bugfix: zeusminer: Include config.hopenwrt: Disable libusb via <truncated> waiting for local bitcoind test if we have other pools defined alreadylowl-pci: Silence warning on big endianbitfury: Portability fixes, including big endian <truncated> bifury: strtoll already implies native endian, no need to flip it againbitforce: Additional sanity checks, including ensuring our final queued count matches that seen by the devicebitforce: Go back to ignoring race-triggered sanity check warnings for ZqXbitforce: Refactor FLB and queue flush sanity checksbitforce: Use binary FL<rest of post truncated>

### Reply 1:
For those interested, here are updated 703n FW bins for BFGMiner 4.3:<link> with DualMiner, ZeusMiner, GridSeed 5-chip, G-Blade, LittleFury, AntMiner USB, Bi*Fury and Hex*Fury.

### Reply 2:
4.3.0 Works wonders on windows xp!!! Super stable, super lower HW (using CGminer with same settings had 10x as many HW). Going to use the RPi and see if I get any lib_usb_errors on it. If not, I can switch to that and monitor from anywhere...Is there some way to configure BFGMiner so that I can use the internet on my phone to make changes, restart the miners, that kind of thing, rather than using putty and a computer? I do have LemonSSH for my android phone, but being able to go to my IP address and punch something in would be handy too...

### Reply 3:
I've got one antminerU2 running on the latest build on a BTCGuild pool and it's doing fine. Having got one working I decided to add my 2nd unit. It showed up just like the first one and I went and added another pool with the same URL as my first pool and a 2nd worker user name. Despite all of this the 2nd unit isn't getting any work. CPU is only running at 13 of 2000 Mhz it is capable of. BTCGuild shows now work for my 2nd worker. Is there some way to assign a worker to a device? Does bfgminer spit out a log somewhere that details access errors and such to a device, or do you have to setup a redirect?

### Reply 4:
Nwoolls - saw on github that you were going to be receiving an R-Box soon to look at the issue with running it on Macs with 4.3.0.Did you get it yet? Running a VM of Windows or Ubuntu just to run the R-Boxes on a Mac is a bit of a pain. Worst case, I guess I could break out one of the RaspPi's or BeagleBones I have, but would rather not. Both platforms are pretty finnicky.

### Reply 5:
It's due today. Hopefully I'll be able to work out the kinks for a 4.3.1 update.

### Reply 6:
Great... and good luck!BTW - using MultiMiner for the first time in a Windows VM just to get my R-boxes going... any plans for hashrate/temp charting in MultiMiner?

### Reply 7:
If you enable MobileMiner integration and pay for the minimal subscription at <link> there are hashrate and temp charts both farm wide, per-rig and per-device.I've considered putting something into MultiMiner and just never landed on an implementation I like. I'll probably do it for 4.0 though. 4.0 includes a rewrite of the UI (just the front-end) in WebKit for better cross-platform experience and would be a good place to start introducing charting I think.

### Reply 8:
Well apparently the AC adapter on my hub can handle the one amp it says it can. Plugged 2nd ant directly into the computer and it's working now.

### Reply 9:
Wow I hope they keep this supported. I don't see it on their website. Where did you find it?

### Reply 10:
bfgminer support bitfury daisy chain?If yes which is the max number?Thanks

### Reply 11:
Hey,In v4.3.0 of BFGM, is dual mining switched-off for G-Blade, or one has to do so by passing certain command in argument field?Thanks

### Reply 12:
It is my understanding that G-Blades do not support dualmining at all.

### Reply 13:
Thanks for your input, Luke. However at many websites they say to turn it off while using through the miner being used, so I asked for the latest BFGM version. Thanks

### Reply 14:
I believe you are confusing this with the Gridseed Orbs which are able of mining both SHA256 and Scrypt. As Luke notes, I don't think the Blade is capable of dual mining.

### Reply 15:
Did some testing with an R. Pi. with 3 gridseed 5 chippers... Seems to work pretty well on this too. I've noticed though, that 2 of my miners which run at 825 and 850 <rest of thread truncated>
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    ""hardware_name"": ""DualMiner"",
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    ""hardware_name"": ""ZeusMiner"",
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    ""hardware_name"": ""GridSeed 5-chip"",
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    ""hardware_name"": ""G-Blade"",
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  },
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    ""hardware_name"": ""LittleFury"",
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    ""hardware_name"": ""AntMiner USB"",
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  },
  {
    ""hardware_name"": ""Bi*Fury"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hex*Fury"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RPi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""antminerU2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""R-Box"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RaspPi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BeagleBones"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Gridseed Orbs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gridseed 5 chippers"",
    ""hardware_is_owned"": true
  }
]"
10007,"Date: 2016-09
Topic: Possible to Swap Antminer S1 Heatsink and Fan onto Gridseed G-blade 80 chip pcbs
### Original post:
I'm just curious if anyone has tried this, I searched and didn't find anything. I'm thinking of ordering one of those 2.6mh/s 80 chip PCB's, and I have a few S1's laying around. It should be possible, even if I have to drill and tap screws, but I'm curious if anyone has the dimensions of the gridseed pcb?

### Reply 1:
Why would you want to?Or are you getting JUST the PCBs without their own HS/fan setup?BTW, it's 40 chips per board for the ""2.6 Mh/s"" (appx) boards - 80 chips was for a 2-board 2-part HS full miner setup at 5+ MH/sMy miners of that type are still packed up, but estimating from known dimentioning and measuring from the box, the part of the board that needs to have the heatsink/BIG THERMAL PAD applied is roughly 4.5"" by 10"".Note that these old miners are at best break-even if your electric cost is over about 4c/KWH.

### Reply 2:
Are you selling them?

### Reply 3:
Thinking about it, but if I move soon to the area I really WANT to be in, they'll actually be profitable (for a short while).

### Reply 4:
The reason I want one is because I have a 300w inverter on my 200w solar panel array. I have the deep cycle battery capable of running one of these for about 6 hours a day without going below 50% of the cell's capacity. Right now I'm just using a gaw fury, and I thought about one of those stick USB setups but they want 80 bucks for 500mh/s (the moonlander).If I ran this with just a single 2.6mh/s 40chip PCB, that's only about 50 watts. I was thinking I could just rest the pcb on top of the antminer heatsink.If you look here:<link> All I would have to do is set up a fan or something to blow against the heatsink, so I think this is the direction I'll go.

### Reply 5:
holes on the heatsink use a standard 92mm fan, and doesn't have to be super-high flow.Actual power usage is under 45 on all of mine, more like 40 even on the no-fan ones, using bricks I got from Zoomhash.You need to put a big thermal transfar pad between the PC board and the heatsink and screw them together - that the ONLY cooling the chips get, and they will NOT stay cool without good solid thermal contact.IMO the termal design of the ""blades"" was very very poor.Also check into the threads on litecoin talk and here about adding heat sinks to the regulator circuitry - or UNDERCLOCK the board - that was the biggest fail point on these miner boards.

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20131,"Date: 2015-01
Topic: Why am I having to Reboot My s3's 2-20 times/day
### Original post:
?Its always random s3's I have 14 of them running. I ahve tried switching circuts, psu's. I dont know wtf this could be could it be beacuse I have so many switches coming off the router? Please advise this is very annoying I have to check my farm every 20 minutes.Someone else says its not the router but I have a really inexpensive 4 port asus router with 2 antennas. One of the new ones but I think they discontinued it. Someone on here said get a good switch but I dont know cisco..... Please advise I am going nuts.

### Reply 1:
cisco is a solid company. here is another switch<link> you are in the usa I have a spare and I use one with my sp20'sif you could put this in the room with the 14 miners and do 1 hard wire run to your router you could see what is the problem it my be your wireless connection to the switch.

### Reply 2:
ok i just wanted to be clear. I am not connecting wirelessly.I running all through wired connections and daisy chain switches etc all running into basic 4 port wireless router.Now if I change this setup and run from my modem to a better switch. Then run my miners into the switch and the router coming off its own line off the switch that may isolate and fix the problem?I think right now this location has like 5 unmanned small switches coming off the router. Please advise

### Reply 3:
Well if you have one flaky switch it can cause all sorts of issues on your network. I would try just one switch full for a while and see if they bomb out or not. If they run fine add another switch etc..

### Reply 4:
Reset is not bad but, please check the Router or Switch! It may solve some if not all the problem you may be experiencing. Also, when the miner is down, if you could still log into the downed miner, please take some screenshots of Miner Status Page. PM us for the screenshots. It may or may not give us some clues but may be worth a shot!

### Reply 5:
is it bad for my computers to have to reset them this many times per day? I wouldnt think so since there are no moving parts cept the fans but idrk and just want to make sure ty.will this work <link> is there someting better/less expensive?

### Reply 6:
I would advise doing proper troubleshooting and diagnosis rather than guessing and throwing parts at the problem.If you think you have a network connectivity issue, first see if you can reach the miner on the network when it's in its failed state. If you can, ssh into it and check outbound connectivity, see if DNS is working, etc.Maybe try running cgminer manually on the antminer and observe its output.

### Reply 7:
Is it all of your S3s that have the same problem? What do the status pages look like when they stop mining? Are the units on DHCP or static? What firmware are you on? If its a firmware after 1024, you will want to revert back to 1024 or the beta firmware below.Ps in the future, please try and find support in the S3 thread rather than making a new one.

### Reply 8:
they are all static and yes it is happening to any of the 14 at totally random

### Reply 9:
Before you resort to buying more hardware you can try DHCP'ing at least a few of them to see if they stay up. DHCP usually sorts a few problems out, and you can stick devices on to always retain the same IP.

### Reply 10:
Auto reboot so you don't have to check them: <link>

### Reply 11:
this is for sp20edit my fault ok i am in the ant thread lol

### Reply 12:
i am running 26 s3+ and just went threw all that it has been a pain! but i got them all fixed now! do you still need help???

### Reply 13:
i have 26 s3's and my s3' were crashing many times a day thy were working good and then crash down to 40 gh/s i have been working on this problem for a month and finely fixed them.if you had flashed bitmains last firmware 1226 thats the problem and reset wont work and if you flash back to earlier program it crashes the miner and is un bootable.i am willing to enplane step by step how to recover the unbootable miner and flash crashing miners back to good firmware with success. bitmain is making tones of btc telling people the control boards are bad just like thy told me and i fixed it. it took me three hrs to set up and figure it out and now that im setup it only takes 15 minuts to fix a crashed s3's.if you want the help i can give it and in return it would be nice to get a btc donation for saving you tons of time and money

### Reply 14:
can anyone verify if this is true?also is this what people are saying to change. And it should clear some things up?

### Reply 15:
what exactly are your miners doing?wont boot?drops hash down to 0-40-50 gh/s

### Reply 16:
my miners are show~50ghs on 5s avg side and poolside but seems like antmonitor is looking at the other avg to determine reboot or not. I have tried switching pools etc setting difficulty and this is still happening. Someone please help this is so frustrating having to login so many time a day to<rest of thread truncated>
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    ""hardware_name"": ""sp20"",
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1361,"Date: 2013-08
Topic: [OPEN] [GROUP BUY] Hashfast Babyjet 1.2 btc = 2.5%
### Original post:
You are right. I'll fix that. The price is now BTC 1.2 instead of BTC 1.3. I would refund money to that if anyone bought shares at BTC 1.3, but no one bought shares yet.

### Reply 1:
What do you think about an escrow? Have you arranged one?

","[
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16115,"Date: 2021-08
Topic: Solo mining using Bitcoin Core wallet
### Original post:
Mining from Bitcoin Core walletProbably this was asked before but I can not find :Why it is not allowed any longer to solo mine directly using Bitcoin Core wallet?

### Reply 1:
Because it's a waste or resources.You can't find a block using your CPU or GPU anymore. It's beyond lottery odds.Although not simple it's that difficult to setup a pool for yourself to mine to.And there are a few solo pools out there that charge a low enough fee that it's probably better to mine there anyway.<link> is 2%<link> is 1%<link> is .5%(the above are all the solo fees, most offer regular pooled mining for a higher fee)DYOR as to which one would work better for your situation.-Dave

### Reply 2:
You can still solo mine on Bitcoin core but you will need to set up a stratum pool to be able to mine with your own pool connected in your own full node. If you are willing to make your own pool you can follow this guide here <link> only problem is that it will need time to fully sync before you can able to connect it to your pool. Why don't you just use the available pool listed from here <link> don't need to wait for too long to mine solo. Take note you can only mine Bitcoin on ASIC miner if you are planning to mine with your CPU or GPU go to the altcoin section here <link> actually your miner is?

### Reply 3:
Solo-mining is always allowed by Bitcoin Core. It'd be ironic if the official release of a Bitcoin client didn't have a solo-mining option.Open your Bitcoin Core console and type generatetoaddress <nblocks> <address> <truncated> 1 <truncated> 2000000000You won't be able to solve a block, because the difficulty is incredibly high for an average solo-miner. Try creating your own hard fork of Bitcoin and then use that for solo-mining, just to see that you're allowed to do that.

### Reply 4:
generatetoaddress can only be used on regtest which is for local testing, coins generated using generatetoaddress are worthless. The mining functionality was removed from bitcoin core in version 0.13

### Reply 5:
generatetoaddress works for me in the mainnet. I obviously haven't mined a block that way, I just hard forked it and tried with difficulty = 1.

### Reply 6:
A Lot has changed there. Solo mining is still allowed but I don't think you will be able to hit a block with a solo mining wallet. Try using solo pools they might help

### Reply 7:
Solo mining is solo mining, mining to your own private node or a public solo pool makes very little difference in finding a block.Now, having your found block confirmed by other miners so the chain is built upon it is a whole different story -- damn good chance that some pool will have a block found perhaps very soon after and because of their faster connections to the BTC network their block gets confirmed before yours shows up on the network meaning you lose an orphan race.

### Reply 8:
Thank you for the lightbulb that went off in my tiny little brain. That makes sense. Lurking just paid off

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    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
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]"
10028,"Date: 2016-10
Topic: THCMiners
### Original post:
I've never heared of this manufacturer... I'm pretty sure it's a scam, so i'd defenately suggest to stay away untill proven they're realEDIT: a quick use of bitcointalk's search function dug up this thread:<link> like a lot of senior members agreed it's probably a scam...

### Reply 1:
Exactly A fool & his BTC are soon parted <truncated>

",[]
23358,"Date: 2020-11
Topic: issue on hoshboard s9i
### Original post:
Helloi have on asic s9i, one of hashboard show me low voltage and low Freq, and sometimes it not works. please see below screenshot:<link> i can fix it myself? it can be fix?Thanks.

### Reply 1:
Image is not enough to tell the exact issue of your hashboard if you can take the whole kernel logs from the dashboard and paste it here we can analyse the logs what is the cause of this.Try any these methods below it might solve your issue.- Reset the miner by holding IP report button for 5 seconds then release.- Reconnect/reattach all PSU connectors and make sure it's properly attached.- If not try to clean the connectors with brush and thinner.- Try with known working PSU.Also, read the sticky thread because all of the solutions is already there.- Most Common Mining Issues, Read Before Making a New Post.

### Reply 2:
Log is below:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel command line: noinitrd mem=496M <truncated> root=ubi0:rootfs ubi.mtd=1 rootfstype=ubifs rw rootwait[ 0.000000] PID hash table entries: 2<rest of post truncated>

### Reply 3:
The 3 hash boards seem okay, they all showing 63 asic chips which what the S9i hash boards have, this could be a power-related issue, what is the voltage you are <truncated> has 63 asicChain[J7] has 63 asicChain[J8] has 63 asicCan you try to remove the other 2 boards and keep only the one that has a fluctuating frequency and voltage?

### Reply 4:
yes, i decreased overclock and now its better. what is issue you think now?but i have some error:screenshot of good things: <link> of other errors: <link> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel c<rest of post truncated>

### Reply 5:
None of the images you uploaded open for me, it shows 403 Forbidden.Can you use this website instead <link> to upload the image?Since underclocking the miner makes it better then there are two scenarios, in which you need to troubleshoot if you really want to know the cause.1- The PSU is bad, it can't deliver enough power to all three board at high/medium settings.2- The PSU is good, but that particular hash board can't handle high frequency and voltage.The second option is more likely.

### Reply 6:
They are not open for me either. But when I try in incognito, it works fine. Not sure what is going on with that website.If you underclocked it, maybe it is now working perfectly fine on 9.5 TH/s but you made it restart unless your hashrate is under X amount (14263.45 - not sure why this number).Check options like ""Stop mining if under X"" or ""Restart miner if under X"", that is a similar feature to Vnish's one I think.

### Reply 7:
Take note that if it is overclocked it will give more heat to the hashboard so if the heat of the hashboard is higher than the maximum temp it will lead to temperature protection. Temperature protection may cause drop in hashrate or the miner might shutdown.Can you try to run the miner again with fixed fan speed of 90%?I don't know if what <rest of thread truncated>
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11086,"Date: 2022-01
Topic: Hash board power connector?
### Original post:
Hello, I have an Ant Miner L3++ that was overclocked and cooked one of the power connectors. I don't want to use that board until I replace the connector. Anyone know the part number and a source? This would explain why it doesn't have the stock power supply but an up rated 1800W job Thanks

### Reply 1:
Evidently these are 6Pin ATX connectors. Found some on eBay and be here in a few days. The L3++ running fine on 3 boards once I disabled the Reboot on low hash rate. OC

### Reply 2:
It's been many years since I dabbled in EE&CE. Last computer I built was when a 286 8Mhz AT was the hot ticket But I already pulled the trigger on eBay so maybe pissed away a little fiat but the picuture looks correct. The term ""ATX"" came from a blogger repairing these hash boards so can't verify the accuracy. But seems to know what's up at assicbasics.com Thanks for your insight. OC

### Reply 3:
No, odds are they the ubiquitous PCIe connectors. There is no such thing as an 'ATX' connector.That said, odds are ones from ebay or other grey-market sites are crap. As long as you do not unplug/plug them more that a couple time they should be fine but will wear out after just a few mating cycles. It is far better to get power components from reputable distributors such as DigiKey, Allied, Mouser, etc. where you can choose the type and quality you want.

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3177,"Date: 2014-03
Topic: [Open] 2,65TH/S Hosting shares for sale using 15 Antminers starting 31/03
### Original post:
Bro can you provide the direct eligius link?For checkup

### Reply 1:
Hey I'm interested in some shares. How can I get in contact with you?

### Reply 2:
So what will happen to the shares we bought if we bought less than 36 shares ?

### Reply 3:
So i buy shares, maybe 10, i receive dividend for the next 6 month then nothing else ?

### Reply 4:
It's dmg i haven't money for as much shares, should be better to sell after the 6 month period but np i'll pass this =)

### Reply 5:
i believe if you let the share holders vote , it would be the wisest decision since it would be unfair for the people with less share , lets say , i have 10 shares , he got 15 , he would get the machine and i would get nothing...If the item is sold , evryone would get what they deserve according to theyre shares

### Reply 6:
Is this legit seems promising.

","[
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]"
16238,"Date: 2022-04
Topic: MxC bitcoin miner is this a hoax
### Original post:
Your one and honly Helium competitor...<link> let's get into this sheit. Now that helium basically reached the point of complete unprofitability this project started popping up in the news also while the market is going down this recently started going up.Their miner cost about 2400 EUR / 3000 USD.As soon as I saw this was advertised as a bitcoin miner something started to stink right away cause you will never ever mine any btc on an < 5W device <truncated> at their github:<link> no miner code in there, not even couple of lines.So maybe we should debunk this sheit before they con more people into buying it....Someone mentioned it on their reddit that the device actually doesn't mine anything just provide proof of coverage, all the rewards calculated and distributed by them. Also another huge red flag about this project is their ""FUEL TANK"" you need to lock your tokens otherwise your miner profitability drops hmm what does this reminds me... <truncated> basically the rewards are paid out from other conned in foes money who buy the sky high 3k miners. This can work for a while but we know all ponzies come to the same end. See ring/thor finance and alike ""nodes"".Anybody actually bough<rest of post truncated>

### Reply 1:
I think you already got it figured out. Bitcoin can be profitably mined by some powerful ASICs, not some shitty network antenna.And the token they talk about is MXC, an ERC20 token on Ethereum network. I wonder how mining an ERC20 token works out This post should be moved to mining (altcoins). It doesn't belong here.

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18461,"Date: 2014-01
Topic: Bitcoind Sync Progress on Linux Terminal
### Original post:
I am a Windows user but recently rented a Cloud VPS to run all of my various coin software/daemons. I have built Bitcoind from source, generated the server configuration file and started it, but realized I have no way to see the Sync progress as I can from the Windows GUI.I can see the file size of the blockindex.dat and blk0001.dat growing, but is there actually any way for me to see the progress from Linux Terminal?

","[
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21347,"Date: 2017-04
Topic: Only 2 boards Hashing on S7
### Original post:
Can anyone help me please? Im pretty new to Antminers and am having issues. I bought this S7 nearly a year ago and since I have had it only 2 boards have been hashing. The person I bought it from hasn't been that helpful and now too much time has gone by to be able to send it back etc.So to start with I thought it had a dodgy board so sent it to Bitmain who advise it was fine.So one by one I can get the board to hash. Have tested each connection cable to each board and they all work fine. Have tested each connection point with each board and cable and all seems fine, however as son as i connect all 3 boards up, only 2 will ever work.Can the connection board be faulty? Could it be something else?Can anyone help me please? I have no idea what else to do and has been going on for so long now.

### Reply 1:
An s7 will consume between 1,250-1,350w of power. Can your PSU support that? I suspect it cannot.

### Reply 2:
I have 2 x 750's running it so don't think it's a power issue.

### Reply 3:
Actually - yes it is. Each hash board takes ~450w so that means that one supply is being overloaded. I would suspect that the board dropping out is usually one of the 2 being fed from 1 supply?And do not even think about 1 hash board sharing the 2 supplies -- THAT IS A VERY FAST WAY TO KILL A PSU as each shared supply fights the other to keep a steady voltage.

### Reply 4:
Oh, I was advised that that set up would work. I can try adding a third to it so 1 PSU per board. On that set up, so I power up the 2 boards that are not connected to the main board first and then the third one. Hadn't thought about that being an issue so hope you are correct. Thanks.

### Reply 5:
In the manuals for ALL of their miners they make very explicit mention about using multiple PSU's. #1 on their list for using smaller PSU's is only 1-per hashboard due to the issue I mentioned.

### Reply 6:
Hi, ok I have an old S2 so have taken the PSU from that and added it but still only 2 boards Hash. so to confirm, each board has its own PSU but still only 2 hash.Any other ideas?

### Reply 7:
Okay...Being rated >1kw a s2 PSU will be able to support 2 hash boards assuming there are enough PCIe plugs on it.This still usually points to a power issue. Other than asking if you have a voltmeter to actually measure voltage at the PCIe plugs, since you tried using a 3rd PSU in it for now we'll set that thought aside.Is it the same board that fails each time?

### Reply 8:
Hi, no it appears to be different depending on which port I plug the boards into. There doesn't seem to be a pattern really.

### Reply 9:
Okay, any idea what batch# it is? Or more to the point - are all the cards in from the same batch. Different ones run at different speeds. Somewhere on the Forum there is a chart of batch#/speeds. As I recall also info about it on Bitmains site.What MHz speed you running at? Tried slowing it down?

### Reply 10:
Each hash card should have a sticker on the back side (small heatsink side) that says something like 45#700 referencing the chip count and stock speed. There are also stickers that should have the order number on each board so you can verify they are the three original cards from that system.If it is not a power issue im thinking its a controller issue. Not an issue with the beagle bone itself but with the control board where everything plugs into.Also posting the kernel log would be helpful in troubleshooting this issue.

### Reply 11:
ok, 2 of the cards have 1385+ bin3 and bin1one doesnt.Currently board 2 is the one not hashing and that is bin3.The frequency is set 600.Kernal log page is blank.Should i try a different controller board?

### Reply 12:
Shall i just buy the data board then? Are they easy to swap out?

### Reply 13:
The control board is what I would say is having issues. It is an easy swap, 4 screws to take the controller/housing off, then 4 more to separate it from the housing.

### Reply 14:
Anyone know where i can purchase one in the UK?

### Reply 15:
Probably best to buy them directly from Bitmain here:<link> Bitmain Warranty. If I remember correctly they have a shop in Iceland.<link>

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18882,"Date: 2014-02
Topic: What is the best pool to use for KNC
### Original post:
Just looking for recommendations for the best pool to use with KNC Jupiters ?I have a few Jupiters and have them pointed to 2 different pools. The reported hashing speed seems to be A-OK but i'm just worried their might be a better pool that will be faster ?

","[
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22346,"Date: 2018-02
Topic: Antminer T9+ Problem I beg you to help.
### Original post:
Did you change the firmware and possibly load T9 firmware onto the T9+? Because the kernel log you posted is from the T9 not the T9+. The T9+ has 9 chains of 18 chips. T9 has 3 chains of 57 chips, which is what your kernel log shows it is trying to find but can't.

### Reply 1:
hello i did do that yes :F but i have since factory reseted the machine plus i have restored the bacup from before i accidently put the firmware on..is there anything els i can do?the official antminer site does not have the antminer T9+ on their website ,so all i have is the factory reset or the bacup version.or

### Reply 2:
You cant backup the running firmware, all you can do is backup the running settings. What makes you think you have a successful backup of the T9+ firmware?Im guessing you are screwed until there is a publicly available T9+ firmware out.

### Reply 3:
You're best bet is to contact bitmain's support and ask them to either publicly post the T9+ firmware on their website for download or have them send it you.Another option is to try the ""ip reporter restore"" method described here. <link> was written before the T9+ was produced, so I don't know if it will work on that model. If you do try this and it works, please post here.

### Reply 4:
I have tried all 3 resets described on that page. Nothing worked so far.While the ip report does give me the starting wokers and pools from antminer te problem does not go away nor does the firmware

### Reply 5:
Like mentioned factory reset doesn't flash the firmware back. You need to contact Bitmain.I really, really, really, wish people would stop kneejerk firmware flashing...

### Reply 6:
Thank you for all your help.I did indeed f*ck up the firmware update, but after it did not reconnect for around 1 hour, I got worried, and I started looking at solutions.What I failed to realise is that I have a T9+ model and the firmware was only for t9 model.I have contacted bitmain support asking them for a solution, either releasing the firmware, or sending it to me.If it will be send to me, I will upload it to the forum, for anyother retarded people like me.Thank you for all your help.

### Reply 7:
Sorry if that came across as rude, but people need to SLOW DOWN and read. This forum has so much information, but folks come hear and ignore it and make the same mistakes over and over.

### Reply 8:
Hehe no problem, I agree it was an idiotic move. I did read a ton before trying to flash( obviously not enough), but I just never though I need to wait 1hour for the antminer to restore connection after server ip update.Its my idiot fault for instantly trying to ""fix"" things.Now there is nothing to do but wait for antminer to release their firmware on the website, its large enough that email wont recieve it I guess ( customer support said he could not send it ), i did make some mega.nz or google drive accounts for him to upload incase he realise that waiting for bitmain before chinese newyear is gonna be a paaaain.Will see.EDIT2; Update :Bitmain just released the firmware on their site <link> Im guessing they fcked something since the file is denied, while others newly uploaded work fine ( for V-version ). Anybody able to download it ?

### Reply 9:
Fixed the problemThe URL of the firmware is written incorrectly<link> the original url<link> the ""FIXED""as you can seen in <truncated> you need to change to <truncated>

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1543,"Date: 2013-09
Topic: [Open] Bitfury miner group buy + hosting (with ESCROW) 2/10.88 shares left
### Original post:
Now 2 / 10.88 shares remaining for next component (at current BTC rate shown in the OP)

### Reply 1:
I'll take the remaining 2 for this as <truncated>

",[]
10976,"Date: 2021-07
Topic: S17+ 76th/s 2 boards faulty Australia
### Original post:
Hi everyone.i only just joined today after numerous searches via google.i have read a few threads but they mainly talk about the good old USA and europe.Everyone forgets down under. ( Australia )Anyway does anyone know of someone that could repair my 2 hashboards or someone that has hasboards for sale for my miner. im only new and started mining about 1 month ago.i only have s17+,l3++ and a mini doge at the moment.my s17+ still works with the one board. and the second board works for 5 mins then comes up with error.i can not work out how to add a couple of pictures for you to see what type i have.

","[
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    ""hardware_name"": ""L3++"",
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  },
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    ""hardware_name"": ""Mini Doge"",
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14598,"Date: 2012-07
Topic: Best option for someone GPU mining?
### Original post:
ltc mining is most profitable at the moment, besides that you could pool hop or just mine on regular pools. Im just mining on p2pool atm and that's been going well the last few weeks.

### Reply 1:
Well I haven't been here in months and so I've missed a lot. I see that FPGA / ASIC mining has pretty much taken over now. I still have my GPU miners running. They don't make much, pays the electric bill and maybe an extra $20 for my self each month. I'm just wondering if any one can point me in the right direction as to what pool would be best for someone still GPU mining. I hear good things about p2pool. I also read that LTC is more profitable to mine than BTC at the moment but I can't see how that is with the current exchange of 1 LTC = 0.006 BTC. So basically what would be the best thing I could / should do if I still wanted to GPU mine?

### Reply 2:
Yeah I use to pool hop months ago but it kinda died off. I don't think its profitable any longer to do so with hopable pools switching their reward systems to a more hop proof algorithm. I tried mining LTC yesterday. I let it go for 24 hours. I got roughly 40 LTC @ 0.006 BTC = 0.24 BTC . With mining bitcoin I get 0.33 BTC per 24 hours. So I guess on my setup LTC isn't the most profitable.I may give p2pool a try. What would be a better pool to mine at. Currently (don't shoot me) I'm mining at deepbit. I know I've read that its the least profitable pool.

### Reply 3:
GPU mining is still going strong for me at the moment. I make $3 profit per day approximately for each of my rigs.

### Reply 4:
Is there any mining calculator for LTC?. I've got 1 5850, 11 5830 and 1 5770, do I get more by mining LTC?.

### Reply 5:
Deepbit is not the least profitable pool. It's still the most reliable, so if you leave your miners unattended for extended periods of time that could easily make it more profitable than most others.Other than that give Ozcoin a try for a few day's. I'm GPU mining and use both of those pools as well as BTC Guild. But I'm not selling my coins for a profit, I'm putting them in my mattress .Sam

### Reply 6:
p2pool seems to have worked out some of the kinks that turned me off it a few months ago. I'm running on it now and am very pleased with it. One note, I suggest running it locally, with port forwarding for 9333 (p2pool) and 8333 (for bitcoin) so that you have optimum info to work with. Theoretically that should reduce your stale rate. Lastly, keep your local version up to date. Using older versions is asking for trouble.The most popular public p2pool, p2pmining, got hacked not too long ago. The point of p2pool is to use your own resources and not rely on a public pool, that can have dishonest operators and/or be hacked.M

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    ""hardware_name"": ""5830"",
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5952,"Date: 2013-08
Topic: Let's compare Avalon's cgminer status page
### Original post:
Received my Avalon few days ago, installed it with almost no hassle. I can say software seems to be very good, still I lack some knowledge about numbers I get about how well it works... Someone please check them and also you can post your's... I have 20130607 firmware installed. I don't know if it's needed to get it updated...time elapsed: ~ 11 hrs 26 minsMHsav: 62633 (cpu freq is on <truncated> 0getworks: 878accepted: 9561rejected: 166discarded: 1691stale: 0getfailures: 0localwork: <truncated> 1networkblocks: 87totalMH: 2.580017e+09WU: 884.6diffA: 589917diffR: 6340diffS: 0bestshare: 764954Temp2 sensor shows -1, and I guess it's not working, but it's not a thread to malfunction of chips or it is?I'm most worried about discarded number, but actually I don't really know if the numbers above are normal...

### Reply 1:
Most important are your results on your pool.Second comes HW errors, which is just a waste of energy. HW should be less 2%Handy little mod I made: <link> temp should be around 50 (Avalon B1 & B2) or 70 (B3). Cut off temp should be 60/80.But really, you should read the Avalon ASIC user thread from start to finish: <link>

### Reply 2:
Why aren't you overclocking? You're leaving 20Ghash on the table, around 20%Also, as far as I can tell discarded shares aren't hashed, so they don't affect your hashrate.

### Reply 3:
Please continue discussion here: <link>

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23871,"Date: 2022-02
Topic: 7.5 cent par kwh what to start with . how much revenu does s9 do at the moment
### Original post:
HI noob here believing in the solidity of btc concept.7.5 cents (us) i approximated monthly electricity cost to 81 us dollar. how to calculate the monthly revenue of a antminer s9? what do you advice me to buy ? used maybe? what to consider , is s9 so old it wont be profitable in 2 years (not sure it would even be atm...)thanks

### Reply 1:
Antminer s9 only runs at 13.5th/s and it can pull around 1300w so I think you will make a bit of profit at the current difficulty. The profit of this unit depends on the difficulty and the current price. If you want to estimate or calculate of daily or monthly profitability of this unit I suggest you use some calculator like the one below- <link> you can use this calculator here below- <link> scroll down to the bottom and look for Electricity cost and put your current Electricity rate.

### Reply 2:
Ok thanks for the answerso it would be profitable but not for so long not even maybe before roiif one is willing to invest more for a more recent machine that will be profitable longer what would you suggest like machine that has a good proven record(not breaking) between 2k and 8k lets say usedtx

### Reply 3:
For current difficulty and price yes but if you believe that Bitcoin price will increase these coming few days the ROI decrease and daily profitability will increase. What do you mean $2k and $8k you mean that the 2nd hand unit with a price of around $2k-$8k. I can't recommend any site that selling 2nd hand units but if you are going to buy I suggest try this <link> try to contact offordscott he is active here on the forum. The daily profitability and ROI depend on the unit you buy always focus on the hashrate and the power consumption of the unit and only deal with legit sellers because there are many scammers out there selling 2nd hand units.

### Reply 4:
For used machines, you could also talk with Grace/Minerexpert there are a few reputable members here who have done deals with them with no problems, for US there is also kaboom pretty solid seller.Anyhow, 7.5 cents per kwh and S9s is really a bad idea.Right now, you know it, you're looking at at least one year of ROI if you manage to get a really good deal on some units, but the difficulty is not going to stay the same and the big guys have orders for tens of exashash for the year.The sad part, I can tell you a lot of things to not do at the moment but I would refrain from recommending gear at this point. Not with these prices.

### Reply 5:
It will be highly unlikely for a second-hand S9 to be running just fine in 2 years anyway, those gears are pretty old and I wouldn't recommend them to anyone who pays anything above zero for power, if you have free power then ROI on S9 is usually 3-5 months, which is somehow pretty safe for an old gear like that, but if you count on it to run for a year or more, you will probably regret it.With your power rate I wouldn't go above 40w/th, I wouldn't touch any of the Antminer 17 series, so that leaves you a few options, one which I can highly recommend would be M20s, it's in the 40w/th - 50$/th range, which isn't great by any means, but at least not as bad as the other newer gears.

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10325,"Date: 2017-06
Topic: Question about powering an ASIC - Please help!
### Original post:
Hi,I just have one quick question: Can two 850w Seasonic 80+ Gold power supplies power one antminer s7? Each PSU has 6x6+2 PCIe power cables.Thanks

### Reply 1:
No.4.73 Th/s model has a power consumption of about 1300W.You can't mix two PSU's in the same hash board, they start to ""fight"" each other, because of the voltage level differences between two PSU circuits.Here are some rough power consumption numbersOne board: 433WTwo boards: 866WAll three boards: 1300WAs you can see, two board would consume too much for your PSU, and as I said, you can't power the same hash board with two different PSUs.

### Reply 2:
I was planning one powering two boards with one PSU and the third board and controller with the other PSU. Thoughts? I also have a 1000w PSU that I can transfer from a separate computer, but that leaves the question of whether or not a 850w can power three GPUs effectively, can it? Sorry for the bother.

### Reply 3:
850W Seasonic won't be enough for two S7 hash boards. Period.I don't know exact specs of your 1000W PSU, but your 1000W PSU for two boards and 850W PSU for one board and the controller is a feasible idea.Remember that the PSU powering the controller should be the last one to be turned on.

### Reply 4:
It is a 1000w Seasonic 80+ Gold with 6x6+2 PCIe cables (at least that many I can't remember the exact amount atm), so that should work? Will a 850w be enough for three RX 470s? If not, I guess I'll return one 850w and pick up another 1000w once I make something.

### Reply 5:
Okay, yes nice. Seasonic is a good one.According to Tomshardware.com 1x RX 470 has a power consumption of about 144W with maximum load.<link> I'm guessing your PC should be fine with the 850W Seasonic.

### Reply 6:
Awesome, thank you so much for the help!

### Reply 7:
Depending how it's clocked (more specifically, what version of miner) it should be possible. I've had several in hosting that have been running off a pair of Dell 750W server PSUs, two boards to one supply and one board + controller to the other, for about a year with no issues except on the hottest days. Won't handle some of the new very-hungry S9/T9 but did stock S7s.It's also not too difficult, if you have the right tools, to undervolt an S7 for greatly improved efficiency. Low enough to run off a single 1000W PSU and still get around 4TH.

### Reply 8:
Also keep in mind that the S7 ""power requirement"" spec is ""at the wall"" using a 93% efficient PS - so the actual draw would be a little less.However, trying to power 2 hashboards from an 850 would be very marginal at best. 2 hashboard on that Seasonic 1000 and the third + miner control board + fans on one of the 850 however should work fine.

### Reply 9:
This is correct and the same as my proposition.This is good point, I used to have great time with underclocked S7 and Enermax Revolution 87+ 1000W PSU.Sidehack is the magic man when it comes to mining hardware and he has a topic for this ""underclocked S7"" subject: <link>

### Reply 10:
Thanks for the great advice - I'm gonna check out that topic and will likely bookmark it

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16159,"Date: 2021-11
Topic: A few questions about mining
### Original post:
How did you get so far in education without knowing how to use internet search engines?

### Reply 1:
I would start with these 2 links:<link> the first one already gives you the ""superficial"" info you need.

### Reply 2:
There are three questions that are asked and must be answered to make your study.The three questions answered take 3 pages to explain, so you can see below, to save writing space.the answer to this you can read here: <link> answer to the second question, you can see here: Bitcoins Elegant Upgrade Mechanism: Miner Votingfor this question you can see and read here: Bitcoin and Voting Power or here: How does miner voting work

### Reply 3:
Hello,I'm looking for answers to a few questions to use in an academic study. Thank you all in advance.What kind of system is used to vote for miners soft fork acceptance? 192.168.l.lWho initiates the voting, asks questions to the miners and waits for an answer of acceptance or rejection?How does this vote come to miners, how do they see it, and how can they vote to accept or reject? 10.0.0.1In short, if you have any information about how the processes related to this miner voting are, I would like to learn <truncated> my English is not very good.Thanks in advance for your help.

",[]
11387,"Date: 2011-05
Topic: Failed work product problem
### Original post:
Running minerd on a server with 2 six-core opterons.""minerd --url <link> --userpass xxxxxxxxxxxx -t 12 -a 4way -q""I have 435 of these after running it for 20 hoursPROOF OF WORK RESULT: false (booooo)And no ""true""Is this normal?EDIT:Here's what my speed looks like--[xxxx@fw cpuminer-1.0.1]$ minerd --url <link> --userpass xxxxx -t 12 -a 4way[2011-05-19 19:56:14] thread 2: 11484672 hashes, 2729.72 <truncated> 19:56:14] PROOF OF WORK RESULT: false (booooo)[2011-05-19 19:56:15] thread 0: 16777216 hashes, 2599.12 <truncated> 19:56:16] thread 1: 16777216 hashes, 2521.49 <truncated> 19:56:17] thread 3: 16777216 hashes, 2589.44 <truncated> 19:56:19] thread 4: 16777216 hashes, 2495.23 <truncated> 19:56:19] thread 5: 16777216 hashes, 2612.37 <truncated> 19:56:20] 12 miner threads started, using SHA256 '4way' <truncated> 19:56:20] thread 2: 14355840 hashes, 2608.22 <truncated> 19:56:20] thread 1: 11983744 hashes, 2717.19 <truncated> 19:56:20] thread 0: 13981024 hashes, 2729.22 <truncated> 19:56:20] thread 6: 16777216 hashes, 2595.14 <truncated> 19:56:21] thread 7: 16777216 hashes, 2637.12 <truncated> 19:56:22] thread 8: 16777216 hashes, 2730.15 <truncated> 19:56:23] thread 3: 13981024 hashes, <rest of post truncated>

### Reply 1:
What is the network/pool target?It's certainly very normal for the mainnet, with its huge difficulty.

### Reply 2:
I'm running it solo pointing it to another server so I can improve the compilation and just test the overall feasibility of running this on several.

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17401,"Date: 2013-03
Topic: help!!!  pls
### Original post:
1. I down loadedDownload latest version (Windows): <truncated> (self-extracting archive)NP the programs seems to be working.2. My Video card is a XFX black edition 7970MSI afterburner only allows me to modify Fan speedAMD Catalyst seems to work fine.I've tried various flags.I believe I'm using phatk2. I do not know for sure.Nor do I know how to tell.3. The problem is my GUI miner seems to work fine for about 20 mins then goes from 500+Mhash down to Khash. Yet once it drops I don't seem to be generating nothing. Like the system is still running my miner but I have 0 GPU activity at that point. If I cklick stop mining then start again everything is fine for another 20 mins. Problem does not seem to be in my flags. I think it's a program issue of some type. I have a very basic system other than the video card and 950W Power supply.Running Windows 7Can someone help me so I can get this figured out. I have been all over the forum trying to find answers and I have been trying different flags for the last 2 day's. However, same thing does not matter what flag I use I get the same results the miner continues but the GPU activity stops.BTW If you send me a personal message I will be able to<rest of post truncated>

### Reply 1:
Check your power settings in the control panel. Your system is probably set up to power down some component after 20 mins.You shouldn't need any flag in that program - I use it with default settings with my 7970 just fine.

### Reply 2:
I apologize for my ignorance but could you tell me how?

### Reply 3:
I think I've changed the power options but it has not changed anything.My mining still converts from Mhash to Khash which the khash isn't generating.Please someone help or direct me to someone that will help me get this working.Thank you

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8612,"Date: 2014-11
Topic: C1 Undervolting
### Original post:
Is it relatively straightforward to undervolt a C1 to ~550W ? If so, what sort of hash rate could we expect at that wattage ? Thinking of picking up a couple fo' shiggles and tinkering purposes.

","[
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16341,"Date: 2022-09
Topic: MINING BTC VERSUS DOLLAR COST AVERAGING
### Original post:
hi all,i have been looking at this model and would like some other opinions about it.i want to mine BTC however i cant seem to see feasibility as the numbers just dont add up..My Aim: to accumulate as much BTC for the least available pricethis is based on a 24 month periodOption #1:- Spend approx. 50k on S19s 110th (which will purchase me 7 units here, $AUD)- energy cost: 0.16c/kw- approx. monthly energy cost: $2784.00- giving me a hash rate of roughly 770over a 24 month period i would have outlaid, my initial equipment cost of $50,000.00, plus 24 months worth of energy $66,816.00, for a total exposure of: $116,816.00And based on my hash rate and some adjusted difficulty, i would have produced roughly: 2.15 BTCVERSUSOption #2:- spend $100,000 now in full and buy: 3.41 BTC- if BTC goes down, i still have 3.41 BTC, great- if BTC goes up, the value of my 3.41 BTC has increasedmy question is, based on the info above what is; my incentive to mine?over a 24 month period, it seems the Buy Now option will render me owning more BTC than mining, will not expose me to energy rate fluctuations, and can liquidate for fiat fiat faster if necessary.have i missed something in my analysis?thank you<rest of post truncated>

### Reply 1:
Take a look here for some discussion: <link> theory, with the cost of equipment, and the fact that miners do die / break so you can't be 100% you will even reach ROI never-mind generate a profit, it's a tough call.Mining is not just about generating BTC, more miners spread out all over help to keep the network running. But, small miners are really in a tough spot at the moment.Think about it before just jumping in. -Dave

### Reply 2:
Actually, this topic was in a different section, and most of the comments are from speculators who have probably never owned a mining gear, I remember we had a similar one here which I can't seem to find, that one was jam-packed with info mostly posted by actual miners, I'll post it here if I managed to find it, meanwhile OP should try to search for it, it's here somewhere.OP, this is an <truncated> question, everyone will tell you a different answer and none of them is wrong/right simply because nobody can see the future.If you were to backtest this question, you could easily cherry-pick periods were mining was better, and of course the same thing for the opposite side.However, more often than not, buying BTC at a bear market (which we are in now) was a lot more feasible than investing money in mining gears.The logic is rather simple, just look at the price history of mining gears price, electricity price, and difficulty.It won't take you much to see that mining gear values are generally in a downtrend while electricity price and difficulty are on a general bullish trend, in fact, you don't even need to look at the charts to know that, but of course, those trends have ups and down<rest of post truncated>

### Reply 3:
Seems your purpose is to know which can be more profitable for you in a long run between mining and DCA'ing. Both are profitable I would say, just depending on how you see your profit. But you should also know that most persons who can engage in mining do so at times not just because of the profit but also the technical knowledge and love they have for it, love most importantly because some factors can be discouraging but it takes a lot to continue. So I would say before you take a decision on which to do, take into consideration the love you have for each of them, and weigh your options. Nothing also stops you from doing both if it is within your means.

### Reply 4:
It was said many times before: investing and mining are 2 types of business, for different types of persons, for different mindsets. Both have their risks, both have their benefits.Some prefer the apples, some prefer the oranges, others prefer both the same; it doesn't make one better than the other.This being said, pick the one you think it's better for you.PS. Some also compare holding mined coins with holding bought coins, but that's imho a mistake in the logic.

### Reply 5:
Option #3:- Spend approx. 50k on BTC now (which will buy you approx. 1.7 BTC according to the current price)- Use the rest of the money for DCA or buy in batches when the price is goodUsing this strategy, you should be able to accumulate more than 3.41 BTC in two years, and, on the other hand, you'll be somewhat protected from price swings or if the price slumps further.

### Reply 6:
In my humble opinion mining protects you (mentally ) from the BTC/USD price drops, as long as you have very cheap electricity.You get returns during the bear market, even though they're small, but they are constant, although declining over time.Generally, not too many miners join during the bear market, so you can collect substantial bag of BTC over time.Later, when the price is high, you have the coins and the gear, which you can sell for double the<rest of thread truncated>
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18482,"Date: 2014-01
Topic: 7950 rig issues
### Original post:
my rig has 3x 7950--- an asrock 990fx extreme4 -- amd sempron I'm having problems with it posting, the rig runs all fans and the system seem to turn on but I get no display, the mother board show a 19 in the digital readout.any ideas for a fix

### Reply 1:
can you boot with 1 gpu plugged in?I found my new gigabyte had an issue of the pcie x slots and had to try each one until.also had a loose pcie molex connector that didn't supply proper power to pci 6 pin on gpu's 'check the simple things' first.

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11348,"Date: 2023-09
Topic: Open Source Bitcoin ASIC miner project that uses 2x BM1387 (Antminer S9)
### Original post:
I found an interesting project about creating your own ASIC using two BM1387 chips. The cool thing about it is that it's all open source: KiCad design files, BoM, software, etc. Basically an Open Hardware project.Github with sources here: <link> a reddit discussion about it: <link> not finished yet, but it's something interesting to have a look if you're planning to make your own ASIC miner, or you want to help create an Open Source one.Also, the person who created this is now looking to make it work with cgminer:This would be great to tinker with, specially with cgminer.

### Reply 1:
It's DIY so I'm not expecting it to be particularly fast, but do you have any hashrate figures on these self-built stuff?I'd be content if it can pump a few hundred GHash/s. It's ASIC tech after all, even USB miners with small chips can output such speeds.

### Reply 2:
Note that it's still not working properly, but based on the design, it should be able to hash around 130GH/s, which would make it similar to the NewPac USB miners, which also used a dual BM1387 setup for the hashing chips.I wonder if it's rather simple to update this design to use newer ASICs like the BM1397 like the ones used in the Compac F, or if that would require a completely new design of the board.Also the new ASICs from Intel should arrive later this year, that could potentially be a winner for DIY ASICs.

### Reply 3:
hi nullama!I saw your reply over on reddit. I'm not sure why r/BitcoinMining is deleting legit posts -- that's pretty annoying.I was banging my head the last few days as to why the bitaxe was only working erratically. I finally got it under the microscope and discovered that the pin pitch on the PCB footprint I had made was 0.03mm off from the actual chip. Doesn't sound like much, but it really looks like a few of the BM1387 pins were not making contact. I have fixed this, updated the GitHub repo and ordered some new PCBs to give it a try. I think it would be amazing to make this work with the BM1397! It looks like the BM1387 and the BM1397 have the same chip package size and pin configuration. Does anyone know if the BM1387 and the BM1397 pinout is the same?

### Reply 4:
Yeah that ~0.475mm pin pitch instead of the 0.5mm is a bit of a killer. Also no, while the footprint between BM1387 and BM1397 are the same, the pinouts are drastically different. BM1391 (S15), 1396 (*17e series) and 1397 (*17 proper) are pretty similar, and then changes were made again for 1398 (S19) to reflect a change in internal architecture but keeping most of the handy features.

### Reply 5:
That's so crazy. I carefully measured it, and then just assumed I was off and it was really 0.45mm. oops! I've ordered a v2 PCB with the footprint changed to 0.48mm -- hopefully that works. It's also a tricky DFN package because the pins don't extend all the way to the side, so you can't see if it's soldered correctly.I don't suppose you have a pinout for the BM1397? Has anyone made one of those poorly translated ""repair guides"" for the S17?

### Reply 6:
Yeah that slight pitch difference messed up early testing before we rolled out the NewPac too. Everything about that footprint makes soldering difficult. Went through three stencil aperture variants before we landed on something that would reliably deposit enough solder on the ridiculously tiny pads without putting so much on the belly pads that it would lift slightly and cause disconnects.I do have quite a bit of data on the BM1397, and you're gonna hate me for this but I'm not gonna post it, seeing as several people are currently relying on GekkoScience miner sales for income and that's the chip we're working with right now. An S17 repair guide is a good place to start though.

### Reply 7:
No worries! Thanks for your help so far. The Compac F looks really sweet, BTW. I can't help but notice there are a lot of them for sale on eBay for $300+ in essentially unopened packaging... That's the same price a 13.5TH Antminer S9 goes for. People are craving this home bitcoin mining experience.

### Reply 8:
There are some bargains on ebay! Somebody just got 2 x R606 pods, 13 x Newpacs 3 x GS Hubs 3 x PI4 a server PSU and a shed load of quality cooling for under 1000

### Reply 9:
Im glad to see the miner pricing falling a bit! Hopefully that will get this scalping that has been happening under control..

### Reply 10:
The bitaxe v2 PCBs with the (hopefully) correct footprint for the BM1387 are supposed to arrive next week. I'm really excited to try this!

### Reply 11:
I found the S17 repair guide that sidehack mentioned. I've put together a BM1397 version of the bitaxe -- the bitaxeMAX?? naming things is hard. Check it out and let me know what you think; <link> haven't gotten PCBs back to test yet, so be careful!

### Reply 12:
That looks very interesting, thanks for updating!Why are you using a single BM1397 instead o<rest of thread truncated>
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    ""hardware_name"": ""bitaxe v2 PCBs"",
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    ""hardware_name"": ""bitaxeMAX"",
    ""hardware_is_owned"": false
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23617,"Date: 2021-07
Topic: Best Firmware for Antminer T15
### Original post:
Hi! I'm new to mining on Sha-256! I have another machine that is for Scrypt and is mining Litecoin! So my doubt is this, I bought my first Antminer T15 (which unfortunately had some defects, but fortunately the L3+ experience helped to overcome it) now I would like to have a more complete Firmware! As I'm using Slushpool, I think BraiinOs would be the most suitable (but this option, I found a note saying it doesn't support the T15) so I tried HiveOs (which is what I use on the L3+) but when I try to flash from the error file! So I would like to ask what is the best firmware option for an Antminer T15! (if it is possible to be able to move the machine when I am away (such as on the mobile phone per application))

### Reply 1:
We can't say which firmware is the best option because they are many competitors with unique features. What exactly error do you get when flashing it with hiveos firmware? You might do the wrong procedure when flashing the miner with HiveOS?Anyway, did you check the awesomeminer? It seems they support Antminer t15 check the official thread below.- <link> you still got some error while flashing it might be a signature check you will need firmware that can bypass or remove the signature check.

### Reply 2:
Maybe Braiinos could work even if not built for T15? For example my R4 have the same control board than S9. It works on all my R4 very well.Maybe T15 have common control board than a model designed by braiinos firmware ?PS : Hey friend redditor :-)

### Reply 3:
Regarding braiinos I sent an email to confirm if it is possible to install on a T15! And thank you for the information! About Hiveos what happens is that the installation in the middle says that it is not possible to install! I got the feeling that it was blocked for some reason! Therefore, it is most likely blocked to different frimware. With this link I could unlock the machine and then install the version I want! right? I wanted a firmware to be able to control the machine for some reason, away from home! And if possible have a good auto tuning and have a manual chip tuning!

### Reply 4:
I am not aware of any ""trusted"" custom firmware made for the T15, those gears are unicorns and I suppose no dev would waste their time on it, so whatever you find is probably a hack of the stock firmware or a waste of time.What does that mean? what are you trying to achieve?

### Reply 5:
The idea would be to be able to monitor temperatures and fan speeds! I live in one where temperatures at this time of year range from 26 degrees to 34 degrees! And there are hotter days. And the firmware I have on my L3+ I can handle these things and also have options to put the machine to sleep if the temperature limits pass the desired! After that it also manages the chips, to improve performance and when possible to lower energy consumption!

### Reply 6:
you simply purchased the wrong machine to use a lot of aftermarket firmware.t17 was a better choice.

### Reply 7:
In fact, the first one I had to buy was s17! But then I saw several people complaining about the amount erros it made. So I bought a S15... as I couldn't find any at a good price, I ended up buying a T15.

### Reply 8:
Try to contact this man ""taserz"" he mostly has tools for disabling signature check and unlocking SSH. I don't if he has a tool for t15 but just try to contact him and maybe he is developing a new tool that supports T15.I think you don't know yet about flashing it through an SD card?You might be trying to flash your unit through WebGUI and receive some error?What you should do if you want a successful flashing is by flashing it through an SD card.

### Reply 9:
If your miner can't do well at 34 degrees then something is wrong with your cooling method, also, the stock firmware handles the temps just fine to a certain degree, while it does not put the miner into sleep mode it simply reboots it, so despite not being the perfect solution one would hope for - it at least ensures that the miner won't catch fire.

### Reply 10:
In the summer my mineshot aisle approaches 120fcold aisle approaches 100f or 38c

### Reply 11:
Yea! I tried by network! I will then buy an SSD to test! I saw a person changing one of the pins that are on the main board in order to install the new firmware! This is normal?

### Reply 12:
Are the home fans at 6500rpm? I have a 7500rpm one here and I could change it to be more rested! I also bought some Y splitters because I was thinking about adding two more fans and that way I had four! But I don't know how much I could spoil something by doing that because it's pulling more energy!

### Reply 13:
I don't think you will need to do that on Antminer t15 the j4 pin jumper is only for the Antminer s9 control board or any similar control board.If you are going to flash the t15 through an SD card you will need to copy and paste the firmware inside the SD card and put the SD card to your T15 mine<rest of thread truncated>
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23317,"Date: 2020-08
Topic: s9 problem
### Original post:
I was input my pools, worker name and i saved it, then i went to do something else and until it started mining. Now it keeps timing out in all areas. anyone have any ideas whats happening and what i need to do to get it back to normal.

### Reply 1:
What do you mean that it keeps timing out?Do you mean that you can't access the WebGUI? Or the miner keeps restarting?If you can access the WebGUI(Access the miner through the browser) Go to kernel logs you can find it under ""system"" then copy them all and paste it to pastebin.com and share the link here or paste it here as a code(Use this button ""#"" before you post).

### Reply 2:
Sorry i didn't explain better after i login with ip and i change all my mining pool, worker infromation. I saved it, then i went to mining status and the web browser keeps timing out. It says something like, "" oops it tok to much time"" that might not be the exact words.

### Reply 3:
Can you still ping it? Maybe it dropped off your local network for some reason and got assigned a new IP address. Also, as silly as it sounds, have you tried restarting your miner and / or router?

### Reply 4:
If other browser doesn't work as suggested above try to restart the miner and then try to use incognito mode in chrome. If still doesn't work try to factory reset the miner by holding the IP button for 15 seconds. After that try to access the miner through incognito mode and setup the pool again. If all suggestion above doesn't work your modem or router might have some connection issue try to reboot the modem/router then test it again.

### Reply 5:
Try other browsers.

### Reply 6:
Oh on this note try a different ethernet cable.Blow compressed air into ethernet jacks on the miner and the switch it hooks up to.Try different jacks on the ethernet switchAlso do you have lots of gear on networkI have had up to 125 miners on 1 router and when you get to that many your issue occurs more often.

### Reply 7:
It looks like you got your network settings mixed up, you have to reset the miner to the default settings.Holding the IP report button doesn't reset the miner, it simply sends a new request to the DHCP table to get another IP, it's pretty much useless, to reset the miner it has to be powered off, and then you hold the IP report button BEFORE powering the miner on, hold that for a few seconds until you see the led flashes and then let go ( you want to keep pressing down on the IP report button throughout the whole process).If this doesn't fix your issue, there are many other things to troubleshoot but overall this is a simple problem and can be easily fixed.

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4920,"Date: 2013-05
Topic: [Ann]Purchase ASIC chips now: 1209 available.
### Original post:
Sent you 2.752 BTC for 32 chips.E-mail sent.Thanks!

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7043,"Date: 2014-01
Topic: Technobit products News,Updates,Support - SELF MODERATED
### Original post:
Will you provide answers here, that you have ignored in your other threads.

### Reply 1:
All left Hex16A are packedto be shipped tommorowThis is except orders got in January

### Reply 2:
I hope so, but you said the same 4 weeks ago.Can you PM me a tracking number tomorrow please. I'll update this thread when i receive it.

### Reply 3:
Not acceptable. I asked for refund. I want my chips back AND bitcoins I paid you AND postage. I mailed my chips back in 2013-11-04! Now they are useless pretty much. Now, if this gets deleted - I promise to spend a bitcoin or 2 on google ads to make sure that everybody knows what technobit.eu is and how good their customer service.

### Reply 4:
Your boards are assembled and packed.If we try to disassemble the chips we can destroy them.And do you know when the chips were received here?And do you understand that PCB are populated in batches?SO shipment tomorrow and no refund.You can start trolling like the other one too.Best MartinP.S. I checked your orderYou paid only 2 EUR for packing.Your boards are about 4 kg package.Please organize your transport You have our shipping address it is a pickup too.

### Reply 5:
Nope. You had your chance. I should have received the boards by mid December 2013. I'm not putting 42Gh/s on the network @ 600W at that difficulty.

### Reply 6:
Any wayYou have the addressYour order is ready packed.It is up to you .NO refund in any case

### Reply 7:
Assuming that you have 6 boards and shipping is imminent I would be willing to buy your order for say 0.35 BTC on the condition that Marto can combine the shipping at minimum extra coast and in reasonable time.I know that's not what you paid but we have all lost here.With <truncated>

### Reply 8:
Nice, new thread

### Reply 9:
I was hoping this could be a thread with information about new products and updates on software and perhaps some guides. But too bad, it's already cluttered with people asking about existing orders.Can't that be moved back to the thread about the actual product?

### Reply 10:
With all due respect there is much outstanding business to be dealt with that has not been dealt with in those threads.Edit : Martin is more than welcome to remove my posts once he has provided my tracking number, to reduce the clutter in the thread.

### Reply 11:
im curious to see what marto has to say about this

### Reply 12:
EXACTLY,Marto can I pretty please have a status on my order KKCKPSKWR

### Reply 13:
SooIt is too much.I'm not going to refund this troll in any case.If I do then every troll that have spare time will be able to win.After a few requests the moderators keep silent. I do not have time to clear the tread every 5 minutes.For now I will just ignore.Everybody use PM for questions, sorry.Anouncments will be made on our blog in technobit.euBest Martin

### Reply 14:
Marto, trolling is one thing from no apperent reason, however some of your costomers have indeed legit claims and no other way to get issue fixed. If you continue with delay and ignore messages, then this will happen again.It looks bad on you really. Remember, you have make a wrong first, did not do what you promised and ignored issues.Fix this so everybody can move one. If user has a legit reason to be upset because you ignore him, why you think hes trolling and continue to sturb the issue. I am sure that mods would remove trolling post withot backing up their claims.Its not about winning. You have obligation to your customers and that is all. You just can not say, oh, i wont issue refund becasue of numerous angry post of users who has legit reason to be upset and angry.

### Reply 15:
you are getting your product

### Reply 16:
There are exclusions to the EU right to withdrawal!<link>

### Reply 17:
Tracking Received, Thank youfeel free to clean.

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390,"Date: 2013-06
Topic: [Group Buy] AVALON CHIPs a few left @0.082BTC + K16 Miner Assembly from 60EUR
### Original post:
<Foofighter>; <32>; < 2,624 >; < 2 >; <truncated>

### Reply 1:
Good morningI'm updating the list and responding mp. Remaining 1210

### Reply 2:
Orders' StatusCurrent chips' price is 0.082BTCKlondike K16 full Miner Assembly service price is 60EUR (378 ordered so far)Breaking News: Any user wishing to get the full miner assembled by nekonos, will be able to pay the 60EUR of the assembly service in full once the miner has been completed and before it is to be shipped to its final destination.Latest News: Bizwoo will be on holidays from Saturday 08 June; therefore, please contact nekonos (and copy bizwoo) if you want to place your order via PM or have a question. Please read the full news.This Group Buy will be closed when the amount of BTC hold in the Escrow wallet reaches 797.764BTC. This will represent 9796 chips sold. When this happens, John K will place the order for the AVALON chips. Current amount in the wallet: Code:ID No. Chips Total BTC BTC Address Total Miners <truncated> 12 0.96 <truncated> 0 PM - Verified User - @0.08BTC2 32 2.56 <truncated> 2 PM - Verified User - @0.08BTC3 224 17.92 <truncated> 14 PM - Verified User - @0.08BTC4 32 2.56 <truncated> 2 Thread - Verified User - @0.08BTC5 48 3.84 <truncated> 3 Thread - Verified User - @0.08BTC6 16 1.28 <truncated> 1 PM - Unverified User - @0.08BTC7 32 2.56 <truncated><rest of post truncated>

### Reply 3:
oper128; 32; 2.624; 2; <truncated>

### Reply 4:
<MrMochi>; <16>; <1.312>; <1>; <truncated> I did everything right.Please confirm.

### Reply 5:
i want to purchase 2 more miner at 0.082/chip, ill use the same adress as befor (order id #9 )<pro>; <32>; < 2.624 >; < 2>; <truncated> <link>

### Reply 6:
<rikur>; <160>; <13.12>; <10>; <truncated> can't wait to get the miners.

### Reply 7:
What is the shipping queue of miners? It's the same as buying chips?

### Reply 8:
wow that order filled up quickly.. will keep my eye out if you do this again bizwoo

### Reply 9:
CLOSED, very nice

### Reply 10:
~2 weeks for the batch to be ready is what I understood so far, so no queue. With the lead-in time of the chips, I'm looking at about ~10 weeks in total after the order has been made.

### Reply 11:
Dang, I was 4 LTC away from having enough BTC to get 16 chips to build a miner but it wasn't in cards for me. My little GPU setup just couldn't mine fast enough. I got myself all worked up hoping BTC would drop enough to make up the difference Good luck to those lucky enough to get on board ASIC mining, GPU mining outlook is grim at moment with massive move from BTC to scrypt.

### Reply 12:
I'm out for a while! who sells me 32 chip?

### Reply 13:
Wow this goes at crazy velocity.I send mp to Jonhk to make the chips order.And update the list of orders. Please be patient I have 34 mp for last 4h

### Reply 14:
I should be ID 121. But it's missing a miner unit. Normally I ordered 16 chips and 1 miner.It also says ""no user"". Will that be a problem? Can I help with that in any way?Thanks Nekonos and Bizwoo!

### Reply 15:
Orders' Status CLOSED! WOW!Thanks to bizwoo.Gracias, nekonos.

### Reply 16:
Wonderful! I was expecting this to drag on another 2 weeks.

### Reply 17:
Great! Thanks guys!

### Reply 18:
Hi MrMochiAnnotated, please verify the addressThanks

### Reply 19:
Orders' Status CLOSEDCurrent chips' price is 0.082BTCKlondike K16 full Miner Assembly service price is 60EUR (464 ordered so far)Breaking News: Any user wishing to get the full miner assembled by nekonos, will be able to pay the 60EUR of the assembly service in full once the miner has been completed and before it is to be shipped to its final destination.Latest News: Bizwoo will be on holidays from Saturday 08 June; therefore, please contact nekonos (and copy bizwoo) if you want to place your order via PM or have a question. Please read the full news.This Group Buy will be closed when the amount of BTC hold in the Escrow wallet reaches 797.764BTC. This will represent 9796 chips sold. When this happens, John K will place the order for the AVALON chips. Current amount in the wallet: Code:[code]ID No. Chips Total BTC BTC Address Note <truncated> 12 0,96 <truncated> PM - Verified User - @0.08BTC 02 32 2,56 <truncated> PM - Verified User - @0.08BTC 23 224 17,92 <truncated> PM - Verified User - @0.08BTC 144 32 2,56 <truncated> Thread- Verified User - @0.08BTC 25 48 3,84 <truncated> Thread- Verified User - @0.08BTC 36 16 1,28 <truncated> PM - Verified User - @0.08BTC 17 32 2,56 <truncated<rest of post truncated>

### Reply 20:
10 days For first batch I hope we open second batch today, previously I have to talk with John K.Thanks all

### Reply 21:
I've sent you a PM.Thanks again.

### Reply 22:
Ahah excellent to wake up and see this buy filled. I assumed it would finish strong, those two 50+ btc purchases really helped nekonos, is there anything I can do to become verified at the moment? Or<rest of thread truncated>
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1979,"Date: 2013-10
Topic: [SHARES] [OPEN] BITFURY SHARES (430+ GH/s) (Switzerland)
### Original post:
NEWS:As we had additional hashpower incoming last week (splitted over the full week),I was forced to do the accouting by hand, calculating everyones GH hours. (Link)

### Reply 1:
<link>

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7595,"Date: 2014-05
Topic: Is Cointerra bankrupted? — People Asking for refunds.. Ows me $6500
### Original post:
The only thing cointerra had to do,is to ask the customers for more time... i didnt hear anyone complaining for 2-4 weeks..Silence in not a good thing. Thats the point in a civilized <truncated> every customer out there ended up with monologues. not dialogues..

",[]
12140,"Date: 2012-12
Topic: GUIMiner Crashes immedately after startup
### Original post:
Hello,Recently reformatted my PC and downloaded GUIMiner. However, as soon as I start the program it crashes..Any ideas?

### Reply 1:
Try updating all your drivers first then try GUIMiner

",[]
16831,"Date: 2011-07
Topic: Help GUIMiner Not finding Cards
### Original post:
I just started over with a fresh windows 7 64bit install...im sure this is an easy fix, just no luck searching it.4x HD 5850sInstalled Cat 10.10Installed 2.1 SDKNow GUI Miner does not see any of the graphics cards or CPU (no opencl devices found)GPU Caps Viewer sees 5 Open CL devices including CPUThanks in advance for help.

### Reply 1:
Used Same Installers on another computer with no problems.

### Reply 2:
GUIMiner doesn't work with older versions of the OpenCL drivers. I was having the same issue (Catalyst 10.11 + SDK 2.1 with my 5830).I uninstalled all the ATI software, and installed just Catalyst 11.6 (which includes OpenCL drivers). Then GUIMiner works.The 10.10/11+SDK 2.1 method is for the command-line miners (like Diablo) only, not for GUIMiner.

### Reply 3:
I use comand line miners, but i have a problem using cat 11.6 with sdk 2.1.I dont get the sdk 2.1 to work, if i use the CLInfo i dont have OpenCl devices . With 2.3 / 2.4 it works.

### Reply 4:
Install catalyst 11.6 and use dummy plugs (or plug all cards into monitor sockets on displays like TV's, pc screens etc)

### Reply 5:
SDK 2.1 is a bit of a hassle. But I recently fixed my miner to run on SDK 2.1, and it has a GUI.

### Reply 6:
If you don't crossfire them you have to make / buy dummy plug.And before install the lastest driver and the lastest version of GUIMiner

### Reply 7:
I just went through this. I think everything that could possibly go wrong went wrong. Here are some things to do.If you have a second monitor, plug it into one of the other cards and reboot. If it becomes available, you're in luck! All you need is a ""dummy"" plug. Use the layout here and the suggestion for Radio Shack 68ohm and pics here to make one with the VGA adapters that came with your cards. One thing though: kink the end of the resistor so that it is certain to touch the walls of the adapter. I didn't do this so my dummy plugs didn't work.If it's not resolved, next, if there is a molex connector on the motherboard and you have a molex plugged into it, remove the plug. I don't know why but this made it so my MB would only see one card. Only use the power that plugs directly into the cards.If that doesn't solve it, then you are in for a bit of work. First. Take out all of the cards and put them in one at a time into each slot and reboot to ensure that the slot is working. If there are any slots that don't work, you might have a defective motherboard.After this, put in all of the cards. Install the latest drivers for your motherboard. Wipe out all ATI software and drivers using <rest of post truncated>

### Reply 8:
Catalyst 11.6B onwards doesn't need dummy plugs but there is a bug that causes load on CPU cores to go 100% which can be reduced by setting guiminer affinity to 1 CPU (but that one would still be at 100%)

### Reply 9:
I only have one monitor and I just swap the cable from one card to another and it still makes them all light up fine so I don't think this is strictly necessary.

### Reply 10:
you have too install the latest driver

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    ""hardware_name"": ""TV's, pc screens"",
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    ""hardware_name"": ""second monitor"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""VGA adapters"",
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13839,"Date: 2023-07
Topic: Whatsminer firmware
### Original post:
Hello everyone! Lately, I've been noticing a lot of custom firmware for Whatsminer. Does anyone have any information on how this is done and if it's possible to create your own? If you have any information about this, please contact me.

### Reply 1:
I never heard that there is custom firmware for any whatsminer units even Braiins, awesomeminer, and Hiveon OS do not support it.Where did you find that there is a custom firmware for whatsminer?I'm sure that's a scam or infected with a virus if it was from an unknown source.

### Reply 2:
I haven't seen or heard anyone either writing custom firmware for that whatsminer(s).You can however get a glimpse into their API here: <link>

### Reply 3:
Unlike what the two fine gentlemen above mentioned, there are actually two known custom firmware for Whatsminer, Chipless, and Bixbit, the main problem with these firmware including everything else that might come out in the future, is there is actually no reason to run them and pay high fees.The stock firmware offers most of the features, you can overclock, underclock, set power limit, and submerge your miners using nothing but the stock firmware, and since using custom firmware requires a lot of trust, it's pretty difficult to find enough reviews from people who use those custom firmware versions, so most people are skeptical about using them especially that ""again"" there is really no use case.

### Reply 4:
is there a way to control fan speed of a whatsminer ?

### Reply 5:
No, it does not have a fan control even using their API you can't able to edit the fan speed but you can retrieve RPM speed through API using the Whatsminer tool under remote control.If you plan to reduce the fan speed maybe switching the settings to low power mode might help to reduce fan RPM.Or if you plan to cool down the miner a bit you can modify the miner's frequency through API.

### Reply 6:
not a good idea. I have eight units2x m102x m304x m50all of them have hot exterior that is deliberately done.all of them are long with larger fansonly two fans that do about 310cfm eachwith the long length heat sheds to outside walls of the miner.If you want to reduce fan speed try two long heat sinks on the left and right outside of the miner.thus the ability to shed heat on those walls would lower internal heat.

### Reply 7:
Using the stock firmware, no.however, there is really no reason to adjust the fan, after playing with hundreds of Whatsminers I released that the fan speed is handled perfectly unlike many Antminers ( the stock firmware to be exact). if the fans are running slow and you think the miner is getting hot, you are wrong, the miner is at the temps it wants to be at, and the same thing goes for the opposite side of the story, if the fans are running too fast, they are keeping the miner at the temps where they think it's safe.I understand you might want to adjust that on Anminter since based on my own experience all those s9s, T17 and S17 had some weird fan/temp ratio, but this isn't the case with Whatminers, in fact, I think even the custom firmware I mentioned above don't allow that, the fans can be unplugged and you tell the miner that it's going to dive into a tank for immersion cooling (it will stop checking for fans), or you let the miner control them.

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19066,"Date: 2014-03
Topic: To mine or not to mine
### Original post:
So i originally posted this in the newbie area because I'm new, but i figure y'all can help me more than them.I recently joined up to look into if it is possible to jump into the mining game right now since the difficulty is over 1 billion. Looking back through the years, 2009-2010 would have been great years to jump into it, but i figure better late than never. People are making money off of the mining, trade, and the creation & distribution of mining equipment. I just want to be one of those guys. now I'm new to forums but not really to the concept of Bitcoins, I have a friend who has been with it for a little while, but I was a naysayer. so my questions to all of you who are experienced are: Is it too late to jump into mining? How much would need to be spent to see a nice ROI after about 4 months? What are some good companies to buy equipment from?And lastly What are some good mining pools to mine with?Thanks for your time - SWAMP

### Reply 1:
no, it's not to late.$6000-$12000 minimum investment.Black Arrow 2TH miner ($6000) and KNC Neptune ($12000). Eligius, Btcguild, Slush... Keep in mind that there is no miners worth of buying right now and everything you can order right now will be delivered in about 2-3 months. by that time everything below 1TH of power will be worthless.

### Reply 2:
thanks for replying quickly and answering those questions. so in about 2-3 months it would the miners you listed will not be worth the initial investment?

### Reply 3:
Even much sooner if btc stays at this value.

### Reply 4:
Okay, so if in 2-3 months the miners you listed will be obsolete then how is it a good time to jump in? if i buy a miner now, ill get it by the time its no longer able to do what it is listed to do. if that happens then im back where i started back where i started.

### Reply 5:
no. you misunderstood me. BA Prospero x3 is 2TH and Neptune is 3TH. below 1TH will be worthless in about 2-3 months.in about 2-3 months miners I listed will be delivered to you (at least BA) and they will earn you nice amount of BTC. 3-4 months after that your best option is to sell them and get your self nice 5-10TH miner. we will see what will be available on the market.

### Reply 6:
My apologies, i didn't follow what you were saying, like i said im sorta new, but now i am looking into getting the $6000 one you listed due to its good reviews. thanks for your help

### Reply 7:
You can still get in on the game. But I would recommend using a site like www.coinwarz.com to compare the hash rates you would get from an asic miner with the hash you would get from a scrypt mining rig in the same price rangeAccording to coinwarz a 350kh/s scrypt rig would mine a btc in, on average, 800-1000 days before a 1 GH/s asic miner mining the most profitable asic coin (sha-256)That is if you are mining alt coins. If you would rather stick with bitcoin buy an asic from a group buy here they have the best deals.Or you could rent hashing power from someone elses rigs

### Reply 8:
what other crypto-currencies are profitable? To me it doesn't matter what kind of miner as long as its profitable and wont break the bank.A friend and I are going to split the cost of one cointerra IV, and it seems like it will be a good start. the other miners out there are out of my price range. although the KNC Neptune as mentioned above does seem nice.

### Reply 9:
When I saw the name of the thread I was sure here would be Shakespeare's fans but I was wrong.Pardon me, are you interested in bitcoin mining? don't you take into account altcoins ?

### Reply 10:
It's all relative! I mined my first block in late 2010, it took me four days (with my CPU!) and when I checked what I could do with my 50BTC all I could find was one exchange (MtGox) which was based in the US (this was before the sale, and the move to Japan) and only handled USD. And 1BTC was 5 cents or something. I suppose I wished I'd got into mining earlier... but to be honest I just thought it was an interesting experiment, and I lost interest.Fast forward to 2011, and 1BTC was - incredibly - worth more than the dollar. My poor CPU obviously wouldn't be up to the task, but I did some sums and invested in a GPU. I mined solo at first then, as difficulty rose, I mined in pools. I kept mining until GPUs became obsolete (this was long before altcoins) and then took the decision to stop mining - I could justify GPUs because I could sell them when I'd finished with them. At this point I definitely wished I'd got into mining earlier...!At this point - right now - I wish I'd invested in FPGAs and then ASICs. If I did it now it'd be a huge investment for me, with a whole bunch of risk; if I'd simply kept mining then the cost and risk would have come in manageable chunks.I guess my answe<rest of post truncated>

### Reply 11:
Well i am a Shakespeare fan.But back on topic, as i said above, altcoins are fine, better yet whatever can be obtained and<rest of thread truncated>
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9968,"Date: 2016-08
Topic: Would you buy a bitmaintech R4 with paypal.
### Original post:
Okay the s-9 has had failures and warranty issues.I have a thread on my two dead boards and how they are being replaced. (still waiting).<link> has now offered the R4 Roi is 8 months or so with free powerRoi is 10 months or so with 8 cent powerRoi is 13 months or so with 10 cent powerWarranty is 90 days.Forgetting how hard a warranty is to have serviced.90 days is way shorter then 8 to 13 months.Bitmaintech has allowed some sales of the s-7 and s7-ln the 1600 watt psu all via paypal.So I ask would you order an R4 if you could pay with paypal?If I use my paypal account and fund the purchase with my discover card I get 1 more year warranty I go from 90 days to 15 months.And buying an r4 looks much more reasonable. So I vote yes to this.I self modded the pool as I don't want nasty racists insults against Bitmaintech or China.So if you write: no I will never buy from those !#@$!^ Chinese !$@^# I will delete your comment.I am tired of reading insults like that.If you write :no I don't like their buisness methods So I will never buy from them! that is not going to be deleted.I want to remind all: they sell gear to us most every other company does not sell us gear They need a better warra<rest of post truncated>

### Reply 1:
I lost faith in Bitmain ... 90 fays warranty and it's hard to get it.The S9 has a bad ratio of failure and looks like a bad warranty service.So I wouldn't risk any money on a R4, especially a complete new design at an overrated price.ROI is long, one failure = money lost.Short answer. Absolutely not.

### Reply 2:
I am sure you've done your research in your usual thorough way Philip, butfrom <link> like you double from 90 to 180 days to me?

### Reply 3:
I could have missed it and thanks for correction so in my case I would be at only 180 days. Need to check if my Amex is better.But frankly I really am looking to get the year warranty on this item.So if all cc's will only 2x from 90 to 180 and 180 is far from roi this poll is a waste of them. Let me look further into my other cc's.So far I found this and I will lock poll<link> of the above info indicates 90 becomes 180 unfortunately 180 days does not cut it.So basically the poll is a waste of time as I won't buy the R4 with a 180 day warranty.I would rather take my chances with another s-9.

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23675,"Date: 2021-08
Topic: Antminer T17e ERROR_POWER_LOST
### Original post:
hello everyone I recently bought T17e (which was the worst thing I done recently) anyway it run for one time then power lost error message keep appearingI replaced voltage regulation cable and message still there and no mining I checked the output of the PSU and it was 12.27 VoltI also change the socket where i connect the miner and problem is still there i flashed the latest bitmain firmware and nothing changed I dont know what to do nextis there anything i've missed ?please check below kernel logEdit: one time I flashed S17e firmware by mistake and then revert back to T17e bitmain firmware UPDATE: I disconnect chain 2 hash board and was able to mine with 2 hash boards, I didn't try this before I only tried to swap cables between all the 3 hash boards I never tried to disconnect a hash board, so I guess I have a dead hash board need to be replaced.Code:NET: Registered protocol family 17can: controller area network core (rev 20120528 abi 9)NET: Registered protocol family 29can: raw protocol (rev 20120528)can: broadcast manager protocol (rev 20120528 t)can: netlink gateway (rev 20130117) <truncated> no compatible node found for <truncated> Unable to map DDRC IO memory.Registering SW<rest of post truncated>

### Reply 1:
Hello,You disconnected Chain 0 or Chain 2 ?Try to measure voltage on metal plates when miner is powering up, not 12V output to control board.Normal output voltage is 18V (first voltage check) ... second is 20V, third 21V ...Try every chain separately and give us result.M.

### Reply 2:
sorry, I disconnected chain 0I dont get what you mean by first one is 18v and second is 20 v , do you mean voltage for each hash board ? and between which points i should measure the voltage ?

### Reply 3:
In my log you can saw .Set to voltage raw 1800, step by step. -> You must measure PSU output voltage 18V +-Set to voltage raw 2000, step by step. -> You must measure PSU output voltage 20V +-And here is photo where measure output voltage on PSU<link> you have a multimeter you can measure impedance(Ohm) on Chain0 between Source and Drain and Gate ( MOS transistor)And give us result.Here is photo what to do.<link> you can try measure impedance between V_Boost and Input Voltage -> on the Chain 0<link> Code:1970-01-01 <truncated> chain[0] PIC jump to app1970-01-01 <truncated> Check chain[0] PIC fw <truncated> <truncated> create thread1970-01-01 <truncated> Set to voltage raw 1800, step by step.1970-01-01 <truncated> set UART baud to 1152001970-01-01 <truncated> Set to voltage raw 1800, step by step.1970-01-01 <truncated> Chain[0]: find 78 asic, times 01970-01-01 <truncated> Set to voltage raw 2000, step by step.

### Reply 4:
thank you for your reply i done as you suggested and attached photos in quote please check them

### Reply 5:
Where did you attach the photos to? i can't see them.Anyway i think your PSU is dying and it can't run three hash boards so when you discconected one of them the miner worked fine, a faully hash board does not really cause the kernel log to report power loss.You can confirm this by swapping another hash board (the one you think is faulty) with one of the two running now.

### Reply 6:
pictures are in the quote, i will post here again <link> Q2 Measurement <link> Q1 Measurement <link> Q4 Measurements it is not the issue with PSU because power lost error message is coming only with One board I even disconnect other boards and connect only this board and error still appears, once I disconnect this specific board and reconnect the remaining two device is hashing normally so I think this board is already dead and shorted somewhere ,

### Reply 7:
Did you buy a used(2nd hand) miner?If not, then you can send them back to bitmain for repair.Can you try to check the hashboard physically and maybe there are some burnt parts under the power terminal. If not, try to clean the whole power terminal and some parts with lacquer flo thinner then try to run it again. Also, you can troubleshoot the hashboard follow the guide from here <link>

### Reply 8:
Please try hash board <truncated> looks fine.And please make a detailed(macro) photo of hash board, TOP and BOTTOM side.Maybe was repaired and voltage feedback have bad reference.

### Reply 9:
it is second hand miner I already try to clean the hash board but still didn't work , thank you for the manual I will go through it

### Reply 10:
Already tried it alone and still id doesn't work, I'm now packaging the boards to send back to china for repair thank you for your kind help

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18885,"Date: 2014-02
Topic: What is the maximum mining speed i can reach with a pentium 4 processor ??
### Original post:
I wanna mine btc with p4. Can i do that?

### Reply 1:
It would be pointless with bitcoin or any other altcoin that is currently worth anything.Also I am not sure you realise how power-hungry Pentium 4 era hardware is. Even if you are doing nothing related to crypto, you may achieve net profit over comparatively short term by simply building a modern computer.

### Reply 2:
Pentium 4 ? I haven't heard that in a long time. It might be worth more to sell as antique ?I am sorry if you were serious

### Reply 3:
0.00000004 Hashes per sec

### Reply 4:
Reckon you can make about 2 BTC a day if you overclock it.

### Reply 5:
hint: this guy is trolling

### Reply 6:
Yes you can.Simply clone btc and mine away with your p4. Done.

### Reply 7:
if he is starting from today hope we have first millibitcoiner very soon on this forum good luck

### Reply 8:
If you have a GPU, go mine an altcoin and trade them for btc

### Reply 9:
No.Just, no.Now please, go learn a bit more before you hurt yourself.

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24031,"Date: 2022-10
Topic: possible hijacked, UL'ed logs
### Original post:
new log <truncated> 19:31:12.00 N cgminer[19763]: Slot0: set reset pin 99 to 001-01 19:31:12.00 N cgminer[19763]: Slot1: set reset pin 100 to 001-01 19:31:12.00 N cgminer[19763]: Slot2: set reset pin 101 to 001-01 19:31:12.00 N cgminer[19763]: Turn off power01-01 19:31:12.00 W kernel: [ 5489.345468] cg@env(pid 19809) in cgminer exiting:001-01 19:31:13.00 W kernel: [ 5489.800372] power_manager(pid 19783) in cgminer exiting:001-01 19:31:13.00 W kernel: [ 5489.800767] cgminer(pid 19763) in cgminer exiting:001-01 19:31:13.00 W kernel: [ 5489.800821] cg@Debug(pid 19808) in cgminer exiting:001-01 19:31:13.00 W kernel: [ 5489.800912] cg@API(pid 19810) in cgminer exiting:001-01 19:31:13.00 W kernel: [ 5489.801268] cgminer(pid 22355) in cgminer exiting:001-01 19:31:14.00 E <truncated> system error state: cgminer:1, temp_sensor:0, temp_over_heat:0, error codes: 101-01 19:31:19.00 N root: /usr/bin/set-led auto01-01 19:31:20.00 W kernel: [ 5496.430185] cgminer(pid 22583) in cgminer exiting:25601-01 19:31:20.00 W kernel: [ 5496.437598] cgminer(pid 22586) in cgminer exiting:25601-01 19:31:20.00 W kernel: [ 5496.444860] cgminer(pid 22589) in cgminer exiting:001-01 19:31:20.00 W kernel: [ 5496.448<rest of post truncated>

### Reply 1:
Hello, I was having discrepancies with my whatsminer hash and while i was searching web for answers and virus checkers, i seen something that made me look at my s17pro who one board just disappeared, anyway i tried to d/l bit virus checker and now it changed my pools to blank and can't change them. I d/led some log files and hoping someone can see if im infected some way? Thanks!Code:Mem: 137816K used, 95928K free, 0K shrd, 643236K buff, 643280K cachedCPU: 0% usr 9% sys 0% nic 90% idle 0% io 0% irq 0% sirqLoad average: 0.05 0.04 0.06 1/91 2630PID PPID USER STAT VSZ %VSZ %CPU COMMAND2629 2628 root R 2152 1% 9% top -b -n 132145 32144 root S 51936 22% 0% /usr/bin/bmminer --version-file <truncated> --default-config <truncated> -T --syslog937 1 root S 3328 1% 0% /usr/bin/ntpd -p /var/run/ntp.pid -g950 1 root S 3028 1% 0% /usr/sbin/lig<link> -f /etc/lig<link> 32142 root S 2880 1% 0% /usr/bin/cgminer --version-file <truncated> --default-config <truncated> -T --syslog943 1 avahi S 2732 1% 0% avahi-daemon: running <truncated> 943 avahi S 2732 1% 0% avahi-daemon: chroot helper32142 1 root S 2620 1% 0% {screen} SCREEN -S cgminer -t cgminer -m -d /usr/bin/cgminer --version-file <truncated> --d<rest of post truncated>

### Reply 2:
You can't figure out if your miner is infected or not just by looking at the kernel log, but usually, if you can't edit the pool details it means the miner is infected, you mentioned something about not being able to change the pool details but the kernel log statesCode:01-01 19:34:23.00 E cgminer[22640]: Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers01-01 19:34:23.00 W cgminer[22640]: Pool: 0 URL: <truncated> User: ...... Password:01-01 19:34:23.00 W cgminer[22640]: Pool: 1 URL: <truncated> User: ...... Password:01-01 19:34:23.00 W cgminer[22640]: Pool: 2 URL: <truncated> User: ...... Password:Most viruses use Nicehash and not braiins/slush, so I assume those entries are yours? also, did you try sdcard flash?

### Reply 3:
How do you change your pool? Are you using the tool from bitmain to change the pool?Try to chanve the pool through accessing the IP webGUI then change it there.If does not work try to factory reset the miner by holding IP report button for 15 seconds then release. If its still doesn't work then try the suggestion above by flashing the unit through SD card. You can try to switch to other OS like Braiins OS temporarily to test.

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    ""hardware_name"": ""SD card"",
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14889,"Date: 2014-01
Topic: Cex.io GHS/BTC price via Twitter
### Original post:
Hi Bitcointalk!My name is David and I have recently begun my adventure with Bitcoin! IRL I am actually a Computer Science major in college, yes, I know some of you are going to tell me to not get involved since I am still in college, but I am in for the long haul. Anyway, being a CS major, I decided to put my skills to use. As some of you might already know, there is a Twitter account that gives the current price from Coinbase every hour, on the hour. Well, I decided to talk this account (that I do not own) to another level and created my own Cex.io Twitter bot. Basically, as of right now, the Twitter account will tweet each hour, on the hour, what the current price of GHS/BTC is on Cex.io. This account was launched today and I am looking to get it out there so you guys, the community, can take advantage of it.BTW, there is nothing in this for me except to be able to share my CS skills with the world! *Go Programmers*Anyway, you can find the bot at <link> for your time everyone! Hopefully you find my bot useful. As a last note, this bot cannot harm you at all since all is does is tweet the current price of Cex.io. In the future, if the account gets popular, I will definitely add mo<rest of post truncated>

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    ""hardware_name"": ""Twitter account"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cex.io Twitter bot"",
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]"
23091,"Date: 2019-10
Topic: Antminer S9j Hashboard missing
### Original post:
Are you sure that you are flashing it with official antminer firmware from bitmain?The kernel logs show something like ""Ooooooh you changed the clock speed... TO THE MOON!"" it seems that someone hacked your miner and replace the firmware with their own customized firmware. Can you flash it with SD card. You can follow this guide S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program RecoveryThen flash it with this firmware instead of s9j flash it with s9 firmware <truncated> in webGUI. After that test, it again for 30 minutes if it doesn't work post the new kernel logs here. You can also try the Braiins OS to test if your 3rd hashboard if its totally dead or not.

### Reply 1:
Nice catch, couldn't see that at first glance.Anyhow just to make OP's life easier, in most cases a simple reset will be enough to get rid of the hacked firmware, but there is a trick that needs to be done while resetting.1-Use the IP-report to reset the the miner.2-Flash a new firmware right away , you have only a few seconds to do so, the flash will fail if you take more than 20-30 seconds to hit that upgrade button, so make sure you prepare everything in advance so that you can perform the flash as quickly as possible.

### Reply 2:
Recently one of my hash-boards stopped appearing after regular cleaning.Kernel log <truncated> has 63 asicChain[J7] has 63 asicChain[J8] has 0 asicBooting sequence:Red led light on hash board is on during the booting process on ""defective"" board and only on one of the working boards. The 3rd working board has no red led.After that the all 2 leds turn off.Lastly the 2 leds on 2 working boards turn on, the led on ""defective"" board stays off.The green lights on control board seem normal ( as on any other working miner ) when miner starts mining ( with 2 boards )I have tried:Software related stuff:Rebooting the miner several timesReset miner to default twiceRe-flash miner to <truncated> also several times.Re-uploading backup files i had saved when i got the <truncated> PSU connectors, switching to the known working ones from other boards.Changed whole PSU, tried using a different one.Changed order of data cables; as well as switching the whole cable.After changing the data cable orders, different Chain showed 0 asic in kernel log ( first time it was Chain[J8] has 0 asic, and after the change Chain[J7] has 0 asic )Miner is still under warranty however i do believe its not valid anymore <rest of post truncated>

### Reply 3:
Cheesy. I wonder what else does this firmware does? It would be interesting to inspect bmminer.confI would go the Braiins OS route, but in any case not only you need to restore the firmware, but also set up a password... Preferably from a non tainted PC (ie. not the Windows pc that installed the malware, lol).Unless this is one of the known firmware mods and was installed willingly by the owner or former owner.

### Reply 4:
I do not believe that my miners are infected with malicious virus, since i've used official bitmain firmware and bmminer from tazers: <link> saw that TO THE MOON message in kernel log on all of my miners but i was sure that tazers left that message in there. It would be great if someone who also clocked them had the same kernel log messages just to confirm

### Reply 5:
What frequency and voltage did you set it at? Genuinely curious as I have some s9's running at 18th/s for the past year. Most of mine run at 16th or 17th to keep things on the safer side.

### Reply 6:
If you use the multi-option firmware from May 2019 you will be able to switch between many efficiency settings, and it will autotune rather than forcing you to set voltage and freq manually for each miner/hashboard.

### Reply 7:
And lock you out of your miner removing ssh access and chance for trying other firmwares... Thanks but no thanks. Avoid Bitmain's 2019 firmware like the plague.

### Reply 8:
I just texted taserz on telegram and he did confirm that this line is in his firmware (he checked the code)So it does not seem like your gear is hacked anymore, but the best way to confirm would be checking the hashrate on the pool, if the average 24 hrs are similar on both the pool and the miner GUI then you are good.but now that you mentioned about using taserz's firmware, it is safe to assume that you tried to overclock your gear and you got that board toasted , what setting you had on it and what was the temp?

### Reply 9:
Oh.. I see...I agree with mikeywith it's possible that your hashboard is dead due to overclocking(like the other said overclocking is always reducing the lifespan of the miner) if you continue to run the miner at the full capacity other hashboard will be dead just like what happened to Chain[J8]. Known issue of moded bmminer of taserz according to the thraed ""Hashboard do not report temps"" so there is a possibility that the Chain[J8] is overheated.Did you try the method that I provided above? Make program recove<rest of thread truncated>
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    ""hardware_name"": ""Antminer S9j Hashboard"",
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    ""hardware_name"": ""Antminer"",
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  },
  {
    ""hardware_name"": ""Control Board"",
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  {
    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""Data cables"",
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8836,"Date: 2015-02
Topic: Mining Hardware Renders and Designs :)
### Original post:
After seeing one of the scam threads with a nice white miner, I though it might be interesting to get some of the capable designer's renderings. So who is good at designing pretty things? Let's see your miner ideas At the end some of the manufacturers might get ideas for a pretty machine for the home miner.

### Reply 1:
yeah i wish it was real I have a lot of Arctic white pc's it would have looked nice next to them.

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    ""hardware_name"": ""Arctic white pc's"",
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]"
5407,"Date: 2013-06
Topic: [GROUP BUY] 100 KnC Jupiter 1-500
### Original post:
Generally, shipping will be handled the way buyer wants, i.e. he decides the courier of choice, insurance, economy / express, etc. Obviously problems with shipping are outside of my control, i.e. if someone asks his device to be shipped to Syria, I won't refuse but also won't take responsibility.As for the price: exchange rate got a little bit volatile recently, so risk is high it to be lower on Monday. But as described, you are going to pay exactly what I am charged for (BitPay total / 100 per unit). The delta is returned to sender.

### Reply 1:
Well this looks fun - a 100 unit order.I assume we would pay shipping after you receive the units?Would you foresee any problems shipping to the US?I have been sitting on the fence about KNC, but this seems like a good deal.I'll send 1 btc over once I get it from my exchange.EDIT:At current rates 1 jupiter would be 64 btc - can you list what all the 70 btc covers exactly?EDIT 2:Address <truncated> <truncated>

### Reply 2:
i'm way too poor for this proposition. Good luck raising funds!

### Reply 3:
How the...?! You have a hundred unit preorder in the first 500 orders??

### Reply 4:
a $10k+ shipping cost

### Reply 5:
I agree plasmoske. Though, if I had disposable income and wanted to take some risk, I'd love to buy a couple of these. I hope everyone is careful, and checks all the details before they buy, though.

### Reply 6:
As written in OP, when KnC first announced, their products were priced somewhere at $3k. with a exchange rate of $200+, 100 units totaled at 1.5k BTC - thats the amount I am still putting at risk.The 3 unit limit was not there when I pre-ordered. It might have been introduced lately, but from the order system I am able to checkout all 100 (see screenshot in OP).Yes, this is risky. I guess KnC collected already several millions, and it will be a sad day for the community if they fail - which is btw the case for all other ASIC manufacturers.

### Reply 7:
Is there any sort of discount for those wanting KnC to host it?

### Reply 8:
What about making a group buy for 5-10 Jupiters with hosting at KNC (or at your place) and dividing each device to 5-10 shares? I think many members would be interested. I know there many group buys like this but not every OP of these is as trustworthy as you

### Reply 9:
Would you be willing to provide the option of KnC hosting the device? That seems to be a deciding factor for some.

### Reply 10:
There is not much information about hosting so far, but since KnC offers to change your mind and ship devices you initially ordered for hosting, I am fine with this.Update: Device HostingSince several users approached me with their preference for hosting instead of shipping Jupiter units, and since KnC allows devices ordered for hosting to be changed to ship afterwards, if we make it to order I will do with all devices ordered for hosting and change it to shipping in a later step.

### Reply 11:
Hi,In my group buy, I am hosting it in southern california at a datacenter. Please check the group buy for more info.<link>

### Reply 12:
+2<link> this go through, I would work towards changing my two existing Saturn orders into these two here.

### Reply 13:
+1 TxID: <link>

### Reply 14:
Zefir can you specify your pre-order number for this devices? or at least what range it was?

### Reply 15:
Hm, I'm still unclear if there was an order number at all and if it is of any relevance for the real ordering now.Anyhow, all I got when I pre-ordered was an email including this linesCode:Order ID: 192The desired goods: KNC Bitcoin miner numbers 1-500Quantity: 100Is this what you are asking for?

### Reply 16:
Does that mean its either ""all 100 are shipped"" or ""all 100 are hosted""?Or, hopefully, you may tell them to host 47 and have the 53 others shipped to you?And, just so that I don't miss anything in the hundreds of other pages:- the first 500 orders (or ordered devices?) may pay the full sum now to be the first ones delivered- after the first 500 it's <truncated> they want to have shipped by the end of septemberEnte

### Reply 17:
The exact ToS for hosting are not yet finalized, the most recent information is from <link> expect and will let KnC confirm that it will be possible to leave some devices hosted and ship the others on demand.After all, they are interested to get funding for their chips, there is no reasonable incentive to refuse giving us such a choice.This would impose two additional advantagesthe shipping costs do not need to be paid upfrontwe might reach an agreement to send those units to buyers who want to have them at home directly, instead of proxying them over SwitzerlandIf this group buy reaches the required threshold by tomorrow (which right now does not look like), I will clarify these open points before I start collecting the final funds.EDIT: forgot to address the other pointsAs forThis group buy assumes and makes only sense if the pre<rest of thread truncated>
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    ""hardware_name"": ""KnC Jupiter"",
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    ""hardware_name"": ""KNC Bitcoin miner numbers 1-500"",
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13211,"Date: 2014-08
Topic: TP-Link MR3020 bin file
### Original post:
Just wondering!I would really like to try TP-Link MR-3020 on Rockminers RK/R3 box to try to eliminate (or reduce) the rebooting pi issue howeverI can't find (or possible don't know what I'm looking for) a standard latest version cgminer or bfgminer bin for the MR3020(did however find some 2012 and some custom vendor stuff). Can anyone point me in the right direction?P.S. I am totally blank with software unless directions are explicit so building a bin on my own is pretty much out of the question. Any ideas.Trends

### Reply 1:
nwoolls has done firmware for wr703n and he is providing the script for building the firmwareI have tried to compile BFGMiner and make a firmware for MR3020, but not succeed.If you have some linux skill, you can try this script.

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    ""hardware_name"": ""Rockminers RK/R3 box"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""wr703n"",
    ""hardware_is_owned"": false
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8345,"Date: 2014-09
Topic: alternative power supply for ANKER hubs?
### Original post:
I bought 6 of the anker branded usb hubs for running asicminer usb devices. They've worked okay, except so far a shocking 3! of them have had failed power supplies. The first I RMA'd the whole hub, got a new one working great, but for the second failure I noticed it was just the power supply so I told anker as much, and they just sent me an extra power supply. Well, now that extra ended up being DOA and another hub's power supply has failed in the meantime. I understand anker support is supposed to be good, and I'm sure they will try and send me more replacements, but the downtime and waiting is rather annoying. I'm thinking about just buying a 12v 5a power supply and seeing if it lasts a bit longer than the 4 amp supplies anker ships the hubs with.Any recommendations? Anyone else have problems with anker usb hub power supplies?

### Reply 1:
I don't have a power supply recommendation, but they probably failed because of improper cooling. I also own a few Anker 10 port hubs and the power supplies gets frighteningly hot. They just weren't made for 24/7 full power capacity (PSU rated for 4A -- 10 block erupters x .5A = 5A). Get a fan for the power supplies you have left before they fail. I use a coolermaster laptop pad and haven't yet had any failures.

### Reply 2:
Thanks for the suggestion, I too noticed the power supplies run hot.I found an old 12v 3a power supply that came with an lcd monitor and tried that, and it works fine. Just to play it safe I only have 7 devices in that hub, but it's been working overnight and all is good, and the power supply is actually running a bit cooler than the default supplies anker ships. I've also contacted anker so hopefully I can get some new working power supplies.I noticed the original 10 port hub have 12v 4a power supply, while the newer model has a 12v 5a supply, maybe that extra amp makes a difference.I'm tempted to just order a couple of power supplies from amazon such as this-<link> I'll wait and see how the next replacements from Anker do.

### Reply 3:
I have some 10 port Anker hubs I'd sell for .5 BTC shipped (in the US) if anyone wants them. International shipping will cost extra.I haven't had any issues with mine.

### Reply 4:
Has anyone torn down one of these hubs? I was hoping that as they use 12v PSUs, they might have a proper DC-DC converter inside, rather than a linear regulator which would just burn power to turn that 12v to 5v for USB...I'm thinking of running multiple USB hubs with 12v inputs from a 100/150W enclosed PSU like this: <link>

### Reply 5:
Why don't you just hook up the hubs to a standard reliable ATX power supply? A small one would be able to handle all your Anker hubs. All you would need is an adapter.

### Reply 6:
An ATX PSU would probably be cheaper, but a 12V only supply that is designed to be run 24/7 and is smaller and fanless, might actually be a better spend - for me at least.

### Reply 7:
I tore down my ORICO p10 hub, which seems to be an Anker clone, and it did indeed have DC-DC converter chips and inductors, so I expect it's fairly efficient My power meter is reading 32W at the wall for 10 USB hashers & the original laptop style PSU - so the loss is only about 7W.

### Reply 8:
Open-frame PSUs designed for running LED lighting or CCTV cameras are pretty cheap and very reliable. Something like this:<link> could also use a bench PSU - I have one here that does 30A at 12V and was less than 100, has current limiting function, and meters for voltage and amps on the front.

### Reply 9:
This is the power supply I used for a failed Anker and it works well: Sabrent AD-LCD12 LCD Monitors 12V 6A 72W AC Adapter Power SupplyActually bought a few just in case any of more of my Anker/AITech/Orico hub PSU's die on me (only have 4 so far)

### Reply 10:
Hi Gingernuts and or anybody else who may know,My apologies if this is slightly off topic but I have myself just purchased (rightly or wrongly) an Orico P10 hub (P10-U2-BK) and was wondering would I be safe to use a 4.5/5A charger to power it? 3A is sufficient for 5 ASIC's but not for 8! Of course this item is brand new so I'm a little reluctant to tamper with it but equally if it's good for the job then it saves me RMA'ing the Orico and trying to find an alternative. If you could PM me with a reply and thus not needing to continue to deviate off topic! Failing that suggestions on a 10 port hub for use with my Raspberry Pi (which doesn't work USB 3.0 devices)EDIT : Rec'd the expected ""No"" from Orico regarding upping the PSU on the hub.. OK time to RMA it and get myself two D-Link 7 port hubs.. A little upset I couldnt find the holy grail!

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    ""hardware_name"": ""Open-frame PSUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bench PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sabrent AD-LCD12 LCD Monitors 12V 6A 72W AC Adapter Power Supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Orico P10 hub (P10-U2-BK)"",
    ""hardware_is_owned"": true
  },
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21202,"Date: 2016-12
Topic: How to solo mine using bitcoin core 0.13.1?
### Original post:
I have a ASIC miner ... I was wondering ..Can i just plug this in and use bitcoin core to mine by myself? I have watched some tutorials but those were all old version .One good answer will get a donation of 100000 satoshi. Leave your address

### Reply 1:
No.If I remember correctly, bitcoin core's mining capabilities have been removed or disabled due to the improfitability of normal cpu and gpu mining. Your best bet would be to somehow enable it (if possible) or install a different mining application.

### Reply 2:
The CPU miner was removed, the GPU (and ASIC) miner was never there.No. You will need a software which you must run your ASIC using. Some ASICs provide this interface on their firmware while some ASICs don't so you would have to use softwares like Cgminer.Bitcoin Core does not support stratum so you need a software that can support getwork. Else, you need a stratum proxy to convert the getwork to stratum.You need these in <truncated> local IP your miner is connecting <truncated> should consider going for ck's solo pool since that is far easier to use: <link> always, seansoutpost: <truncated>

### Reply 3:
The software can also support getblocktemplate too. Both getwork and getblocktemplate work fine for solo mining. Most modern mining software such as cgminer and bfgminer support both getwork and getblocktemplate.

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    ""hardware_name"": ""CPU"",
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  },
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    ""hardware_name"": ""GPU"",
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]"
8359,"Date: 2014-09
Topic: KNC Nov Jup - ?damaged in transit
### Original post:
We recently shipped a KNC miner across the country. It was working perfectly prior to departing. However, it is now powering off around an hour after booting up. In addition the temps are higher than previously. All fans are attached upon opening up the case.Miner was reset and updated to newest firmware without effect. Ideas?

### Reply 1:
How were the fans when you opened the package? Check/reapply thermal paste? All fans working? Unplug/plug all the cables.

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  },
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    ""hardware_name"": ""case"",
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    ""hardware_name"": ""thermal paste"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""cables"",
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]"
6503,"Date: 2013-10
Topic: KNC Miners - auto restart script
### Original post:
A few of us have noticed that .93 will restart cgminer a fair bit when performance dips and enjoyed the better overall avg hashingSince the other firmwares seem to not care and since there is no crontab installed....I wrote a simple shell script to auto-restart every X secondsPlace it in your /bin dir so not to care about paths, and keep a copy in your /config dir since reboots of the miner will overwrite a lot of files I named mine <truncated> truedo sh <truncated> restart sleep 9200done9200 seconds is about 2 1/2 hours. Change it to whatever you like.if this helps you, a few bits in the tipjar would be nice <truncated>

### Reply 1:
restart only in case of a <truncated> truedo if [ ""$(pidof cgminer)"" == """" ] then sh <truncated> restart fi sleep 10;donefrequent restart as well as restart in case of a <truncated> #secondswhile truedo if [ ""$(pidof cgminer)"" == """" ] || [ $(($time - $restartIntervall)) -eq 0 ] then sh <truncated> restart time=0; fi sleep 10; <truncated> untested-

### Reply 2:
nice, I think the best way to mimic .93 would be to monitor your pool's reading of Gh and have it restart after the avg stays below a certain limit for 3 or 5 checks in a rowOr perhaps watch cgminer's Gh and HW errors & WU and make up a suitable floor for doing the sameI know Kano has a calculation that takes all this and gives an estimate of what 'paid hashing' your miner is really doingI am currently gaining about 40Gh more on avg just by restarting every 2 1/2 hours.. of course if a miner doesn't have issues recovering cores on its own this isn't needed

### Reply 3:
BUMP, this got lost in the mix there. I'll try to play with this a bit and let you know.

### Reply 4:
Just restarting CGminer every so often is not bringing it back to life, it quickly loses ghs after 30min and disturbs so many cores it doesn't help. I need an auto reboot mechanism. What I need is a similar script in the init startup to reboot every 2 hours. If anyone has suggestions

### Reply 5:
I ran your 1st script btc_uzr got thissh <truncated> line 9: syntax error: unexpected ""done"" (expecting ""then"")[1]+ Done(127) bash cgrestart.sh

### Reply 6:
I have a $5 tip for someone who gives me working script to reboot my jupiter every so many hours. Obviously it has to be run at startup and survive reboot. I have it on .91 with the reboot mod added. ThanksIt would be a bonus if it could detect ghs drop for x seconds then reboot as well.

### Reply 7:
you'd be better off running the reboot.cgi URL web command from a remote computer on a looped script for that.and since it would be driven from a remote machine, it would be possible to read the value off your pool's page and then do some type of stop limit type trigger for itI'm not much of a web coder but I've seen stuff like this in action. probably not hard for those into that

### Reply 8:
I assume you ran it on your desktop pc or similar, since the script executes fine on my KnCMiner; tested a min agoOn KnC devices there's no bash but sh./bin/sh -> /bin/busyboxand for example Ubuntu links it to dash/bin/sh -> dash

### Reply 9:
Good idea.btw:there's a nice tool/firefox plugin used for web-testing you can use with nearly zero knowledge about programming.for reloading the status page and clicking the restart-btn in case of crash, this will do the job for you I guessNot sure about checking a value on one page and trigger an action based on it on another webpage (check pool restart miner).<link>

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481,"Date: 2013-06
Topic: [Group Buy] Avalon ASIC Chips (SebastianJu) Batch 6: 863 ASICs gone 50863 sold
### Original post:
Today i practically wasnt in the forum/thread. The reason was that i travelled through half of germany to bavaria and only now came back. I there visited the company that will import the chips, i checked everything there and made a contract to ensure everything. Before doing this i got the permission from avalon support to change the addresses for the batch-orders afterwards. The support will change this now fast too i hope.Now the import will go faster and without problems. Furthermore i made a deal with the company that, in case the vat is appropriate high, the company will make bills about the payable vat for the single groupbuyers. This case only applies in case the vat is appropriate high.In case the bills will be needed for vat i would collect billing addresses and an emailaddress to send the bill to from all parttakers in the groupbuy. At the moment 268 members. For now it wont be necessary because i have a ticket with avalon where i ask for more detailed infos about this. In case avalon isnt answering soon i will call Yifu again. In case this wont help i will collect addresses preventive. Its better to be prepared then having to wait later.So it looks like its slowly moving<rest of post truncated>

### Reply 1:
As we pay in bitcoins and bitcoins officially worth nothing, should we pay VAT?

### Reply 2:
If the price you paid is unknown or unreasonably low, the customs can calculate the ""market value"" and use that for VAT. And the chips are worth more than nothing, but who know how much...I think it depends on what value will Avalon declare. It should be less than what we paid, but not too low for customs to be suspicious (although the majority of standard SMT chips and components are less than $1).Also the customs sometimes tend to ""guess"" the price from the size of the package, so small box full of expensive chips declared as $10 won't be suspicious, but big big box with something really cheap would be

### Reply 3:
In Finland Vat is 24%. Dunno how it is in Germany. So i think that about <truncated> is too much. If there is any chance not to pay taxes, i think it must be used. Sebastian have to have different explaines aboit possible very low,amost nothing, price or good explanation that resale value is almost nothing becouse of production method and these asics processors could not be used in any other project so no one need them....And i personally hate to pay taxes. If there is chance to not to pay to government i prefer to keep my money

### Reply 4:
<Josue>; <200>; <17.2>; <truncated>

### Reply 5:
Germany does not give a damn how you pay <truncated> if you import, there will be a question ""How much is this worth"" and if you paid in rupees, they are going daily course.So, for this one, if they are progressive at customs, the best thing happening would be if they ask for a bill, to see the most ridiculous price drop in history, just to return the day after chip arrival Don't argue with german customs. If you want your money back and not pay taxes, you need to pay up first and then sue then. Making trouble with them can have a package laying at their facility for MONTHS or YEARS (Which you pay storage fees for) while the lawsuit is under way.What you use things for, is completely irrelevant to them. Sales price is what counts. Type of good is only important for import customs fee, which is ZERO for semi-conductor electronics in the EU. So only VAT applies.Here is my personal advice to german group buyers: Check with lawyer and Steuerberater first if you want to deduct the Einfuhrumsatzsteuer (Import VAT) at the end of the year. The moment you argue that you get the taxes back, you are a business. A business selling bitcoin might fall under regulation. And the moment you want yo<rest of post truncated>

### Reply 6:
Avalon for sure put some kind of Invoice with package, so that Invoice should be relevant.Other thing is insurance of package in case something unpredictable happen.Those are two variables should be taken into account to determine cost of customs.Any lying about value of the goods (in case to go that way) and we have to be ready to never see those chips.In case Avalon didn't send Invoice, we should ask them to provide it but I am sure that either of two mentioned is present (Invoice or insured value).No argue with customs should be my advice and all disputes should be settled once and only after we do like we are told.

### Reply 7:
Again, talking about custom here is not the best idea...

### Reply 8:
Its not a question if we can avoid it. The chance that it goes through custom without anything is slim, though i know of smartphones that go through without. But the chips will be a bigger packet.German vat is 19%. Thats around the vat all countries in the eu are paying. Only swiss has 9% vat but its not eu... when importing into swiss and then into eu we had the chance<rest of thread truncated>
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12046,"Date: 2012-09
Topic: Cgminer P2pool / solo question
### Original post:
Hopefully someone can explain this to me.I have cgminer setup to use my P2pool server (Pool 0). I also have another pool setup(Pool 1) pointing straight to my bitcoin server.I have cgminer on Rotate. Every 120mins it will switch between pools.When it switched from P2pool to just bitcoin it says connecting to host:8332 via longpolling.Is this a good thing to have LP enabled when solo mining?Is it still solo mining even though my miner is somehow still using P2pool for information? Is using rotate frowned upon?

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22789,"Date: 2018-10
Topic: [Antminer S9] How does the S9 know what hashrate to ""autotune"" to?
### Original post:
So this is a question that I've been wondering about for a while, but now I am even more motivated to find the answer due to the recent release of the ""Low Power Mode"" firmware from bitmain, which is autotune and doesn't seem to have a fixed frequency option.The question is, how does the S9 know what its hashrate is supposed to be? For example, I took one S9_13.5T and one S9_14.0T and flashed the <truncated> to both. Afterwards, the S9_13.5T still ""autotuned"" to 13.5 THs, same with the 14.0T.I was under the impression that flashing a new firmware overwrote the old filesystem. How then is it possible for the S9 to ""remember"" its assigned hashrate? Where is this value stored, and how can we change it?It would be great if we could ""autotune"" the S9 to 15 TH while it is on the ""Low Power Mode"" autotune firmware. I'm mainly only familiar with the fixed frequency firmwares / bmminers so I would really appreciate any insight into how the ""autotune"" firmwares work. Thanks!By its assigned hashrate, I am referring to the ""fixed rate"" displayed in the log:S9_13.5T after flash:Code:miner total rate=13772GH/s fixed <truncated> after flash:Code:miner total rate=14014GH/s fixed rate=14000GH/s

### Reply 1:
There is a chip on each hashboard that identifies what it is to the controller

### Reply 2:
Back flash to the May 17 firmware, use the <truncated> weblink to access the full speed menu and set it.Flash forward to 1023.

### Reply 3:
Thanks! I tested and confirmed this just to make sure.Do you know if there's any way to make a miner tune to a different hashrate? Or if there is a way to run the ""Low Power Mode"" firmware with a fixed frequency?

### Reply 4:
If you upgrade a fixed frequency miner with the new firmware package will it stay on fixed freq? I thought it was autofreq which would disregard the frequency setting from minerAdvanced.cgi. I'll have to try it tomorrow.

### Reply 5:
Cool! It turns out if you flash the low power file onto a miner with fixed frequency it will not override it to autofreq. Dunno why I didn't think to try that. Thanks everyone!

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6634,"Date: 2013-11
Topic: [WORK IN PROGRESS] Fan cooled case for ASIC BLOCK ERUPTER BLADE
### Original post:
is this for the new blades only or would it work with the old blades?

### Reply 1:
Plan on making it compatible with both

### Reply 2:
New blades don't need cases. They just need a box fan and its gg.

### Reply 3:
a rack to put them in to keep things neat is still nice to have.

### Reply 4:
Precisely.Not everyone has a dark basement to keep their hashing units.

### Reply 5:
I will make it for the old blades first. Once I get a working model I will start to implement changes towards compatibility for both new and old blade.

### Reply 6:
Ikea stuff, 50 eur brand new rackUp to 20 old blades <link>

### Reply 7:
Some pictures!

### Reply 8:
Hello!I'm going to start designing and manufacturing a cooled case for my soon to come Block erupter blades.Trying to ask here if people would be intrested in buying these cases once I start to manufacture them?Purpose of these cases is esthetic, so mainly suggested for people without some storage rooms where to keep them running.One case would hold 1-5 blades, PSU and enough room for fans on top of the blades.Also 2x200mm fans. 1 for intake and 1 for outake. Not sure about the blade amount/case yet, you'd need quite a PSU for 5 I think? Could really use a protip for that.I would only assemble these cases WITHOUT the BLADES and the PSU and ship them to you.Pricetag is yet unknown as this thing is still in the designing phase. But considering the amount of work for one case. I'd say around150-200 dollars. That would include the case and 2x200 fansLet me know if you people are intrested. Also if you have in mind features you'd want, feel free to post suggestions.About me:I live in Finland and I work in a sheet metal subcontracting company, thus I have access to large variety of sheet metal cutting and bending machines. I'm also able to use 3d designing program which makes it much eas<rest of post truncated>

### Reply 9:
I will definitely buy one of these if you make it to hold 10 V2 Blades <3

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22019,"Date: 2017-12
Topic: Avalon 741 fan question
### Original post:
Has anyone tried reversing the fan from push to pull?Reason for asking is venting the hot air away from miner would be easier for me if I could.

### Reply 1:
There was a thread on here somewhere that a person had rcvd the fan installed backward (blowing in).He discovered it because his unit was overheating, he switched to blowing out and it stopped overheating.

### Reply 2:
<link>

### Reply 3:
Thanks for that,So they are pull fans anyway?Canaan description states rear fan, which to me means push.

### Reply 4:
It pulls the air in

### Reply 5:
Thanks for that.

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4986,"Date: 2013-05
Topic: Any demand for another type of Avalon chip based miner?
### Original post:
Hello. I was wondering if the community had any interest in another design of an Avalon based mining board. I am aware of the current projects, but perhaps there are certain things that you may have wanted in the design that the other projects do not offer. I'm asking the community because I just started work on my own mining board, but I didn't plan to have any features that the other projects didn't currently offer. If I could design a board with unique features that you guys would want, then my design could be of use to people other than myself. Let me know what you think.

### Reply 1:
I think the more options, the better! What have you got so far?

### Reply 2:
A 50$ clone of those ASIC USB sticks. edit: oops <link>

### Reply 3:
All I have done is make a library part for the Avalon chip in Kicad, so I haven't really done anything so far.I was thinking of designing a board that could be etched at home, but it would be a challenge getting it done on a double sided board and thermal vias wouldn't be doable. I have done plating of vias at home, but pretty much everyone else is not going to have that ability. I'm still trying to think of a decent way to get around the thermal vias. Of course, I plan on making a version that does use thermal vias that can be manufactured at a PCB fab if desired.But, the whole point of this thread was to gather any suggestions on particular features they would like to see in my board design that may have been overlooked by the other projects. I know that the other projects pretty much have everything covered already, so there may not be anything worth suggesting. If that is the case, then I will just work on my own design and release it when it is finished.Also, I am not intending on selling any boards. This is just another design that I plan to make public and anyone can manufacture it if they want.

### Reply 4:
+1 Thanks for your work

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18097,"Date: 2013-10
Topic: is the number of stale/duplicate shares normal?
### Original post:
ok not sure if this is relevant, ever since i switched to PPLNS from PPS i've been getting quite a bit more stale shares but here's the overall figuresis there something i should be concerned about?

### Reply 1:
you should be happy with 0.46% stale.

### Reply 2:
Very true.But doesn't the dupe count seem really high in proportion?

### Reply 3:
All is good then. ...

### Reply 4:
Yep. What is your mining device?

### Reply 5:
avalon batch 1

### Reply 6:
I would say that's really good. I thought that Avalons usually got 1to 5% stales.

### Reply 7:
I'm thinking 1% to 5% Hardware Errors which you would see in the mining software.But, .46% stale is still fine.Sam

### Reply 8:
Sorry for the thread necro. What is a reasonable percentage of duplicate shares for Avalon devices ?

### Reply 9:
Dupes should be close to zero. Earlier avalon firmware had design problems that caused dupes and updating firmware should fix it.

### Reply 10:
You should be happy, I have a 2% stale share, tried many method and still won't reduce.

### Reply 11:
0.46% stale is quite usual for an Avalon these days. One thing to keep in mind is that stale rates will scale roughly in proportion with network growth rate. So when you're at a period of 20-30% network growth rate, you can expect roughly that many more stales than normal. So if 0.40% was your nominal rate, it may be 0.48-0.52% when network is growing rapidly.Dupes are often firmware related, but can also be network connectivity (resubmission of a share due to lack of response in a timely manner). I know FPGAs were big culprits of duplicates, but they weren't actually *wasted* work, it was simply that there was some kind of firmware bug that caused them to report the same nonce information in certain scenarios where no solution was found when the nonce range was depleted.My Avalon lately has been mostly clean on dupes with later firmware, generally a completely insignificant amount. It may be network connectivity, since my Avalon is on wireless across the house, with a microwave in the middle

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14221,"Date: 2011-06
Topic: What assumptions are people using to justify adding mining rigs?
### Original post:
I put together my own Google spreadsheet to examine whether it makes sense to add to what I am currently using to mine, and the numbers keep looking bad. E.g. for a triple 5830 system:Days to next reset:5.0, based on <link> of next reset: 513600, based on <link> per difficulty increase after the next one: 8Difficulty increase factor after the next one: 1.3 (30% average increase)Watts: 550$/KWh: 0.12MHash/Sec: 840 (3 * 280 per 5830)$/Bitcoin: 10Running the above numbers, on August 18 the electric cost exceeds the generated bitcoin value. Total income at that point (assuming selling bitcoins at $10 apiece) is $492 - putting together a 3-way 5830 system for $492 is pretty tough (used parts maybe?)Are other people using more optimistic numbers?

### Reply 1:
Nope, you're right on.The only thing people are using to justify investing large amounts of money into this...Is Bitcoin price speculation.

### Reply 2:
Your calculation only takes in account the current spot price, just as calculations a month ago were made assuming $4 or lower spot price, and 3 months ago a fraction of that.I don't deny the profitability is volatile at best if you are starting out just now. I just don't see a likely scenario where the price will suddenly start plummeting or simply stagnating at $9-$10 when mining becomes harder & more users become aware of bitcoin every day.I started nearly a year ago but I can perfectly see the rationale behind adding more rigs today. It still pays itself back relatively fast, and could even accelerate at an unknown pace.

### Reply 3:
Not been into economics long, eh?I've seen more bubbles burst than a kid chewing bubble gum.

### Reply 4:
Here are the assumptions I used.BTC is still in its infancy. If successful it will most likely replace the entire world's currency supply. There is almost not believable way that doesn't sound arrogant or deluded to put the price into perspective once this happens. It might be akin to a land grab in the old west, but with the land values rising to their fair value in a matter of years. Between now and then one of the following will happen to the price.1.It will collapse for a while. This drives people out and pushes difficulty down, it has happened before and might very well again. Typical causes might be a negative court ruling in the US or some other jurisdiction. In the long run BTC will probably survive this since not every place on earth is likely to make it illegal and due to its nature, if not every place on earth has it illegal, it will have value everywhere.So you mine easy for a while and hold the BTC and maybe conduct some of your own business in BTC. Waiting for the value increase to resume.2. It will stabilize. If this happens only the rigs with high Mhash/Watt are worth investing in. This would have to persist for very long to be a concern. FPGA rigs might become very<rest of post truncated>

### Reply 5:
Here are some scenarios where this can happen:The Dwolla/MtGox BTC <--> $$$ link breaks, perhaps due to pressure from bank regulators in response to Paypal or VC/MC lobbyists.The speculators who are buying BTC run out of money/the bubble bursts, as Genrobo mentionedSomeone hacks MtGox or some other key BitCoin participant to steal BTC balancesSomeone identifies a cryptographic fault with the Bitcoin schemeAll of these scenarios would cause a crash in BTC values. I guess you can argue they are unlikely - at least the first two seen quite plausible to me.

### Reply 6:
I'm not saying it will rise indefinitely into the hundreds of thousands or millions. In reality, I don't even care what makes up the price as long as it stays at that, drops lower or rises. I'm saying it still pays off to mine, even a year later. At 8ghps I'm still making way, way more than the cost of electricity and AC.And that's going to be the same for anyone starting today. At worst, they lose out on the electricity costs and 10-20% resale value of the hardware if everything drops to zero tomorrow. At best, they pay off their initial investment in a month or less and gain profit after that.Note that I didn't go into the specifics of what makes up BTC value. I'm merely answering OP's question about why some people still invest into new rigs. Of course Paypal/LR/ MTGOX raids etc. are possible. They just seem like a distant possibility at the moment.

### Reply 7:
True, but if this happens quadruple your mining equipment as fast as you can. Some other jurisdiction will pick it up.

### Reply 8:
Well, I'd actually argue that this one is the most likely, especially given a large enough botnet and financial interest (more profit in using the botnet to forge transactions than participating in block discovery). Even Satoshi agrees that BTC is ""practically"" impossible to forge, but it's technically feasible by a large enough attacker. I don't know how well the creators have prepared for an <rest of thread truncated>
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9123,"Date: 2015-05
Topic: [Review] Spondoolies SP20 review - A Green miner with a Loud fan
### Original post:
Front end

### Reply 1:
Back end

### Reply 2:
The whole unit weights exactly 5.0 kg, very easy to carry around

### Reply 3:
The camera was used to capture pretty girls, now girls are gone and only miners left

### Reply 4:
The connectors, one serial for testing purpose I guess, USB, SD, LAN, all described in SP 20 quick start manual (It seems I could not find the user manual from Spondoolies website)

### Reply 5:
Just received my SP20 a couple of days after the review campaign, delivered from Israel directly to Sweden without any custom charge!Packaging is compact and sturdy, very well protected

### Reply 6:
Naturally, I thought the PSU is not enough strong, so I took another 1300W PSU and tested, same faultThen I saw on ""Settings"" page, I could select ""Basic Voltage settings"" and then pick the ""slow fans, medium rate"" option, restarted miner. Immediately it hashes at 1.4 GH! So I think there is a bug in that advanced setting page, it does not recognize the PSU even I put 120 in all of the fields, and by using basic voltage settings, all those fields turned to 1100Then I reduced all the voltage to 0.6 and the unit run at 940GH/S, ASIC stats looks like this

### Reply 7:
I have only two spare 500W PSU left from old time BFL singles bundle (They were so generous at that time that they even delivered a PSU with their unit, I never used them )I hook them up, started miner and went to the Settings page, lowered all the voltage to minimum (0.58) and filled in 200 in all 4 field: ""Max PSU Power Unit 1 (70W - 288W) "", and restarted miner. It turns out the miner only runs at 370GH and by looking at ASIC stats page, two of the ASIC loops are not working:

### Reply 8:
And the amazing thing with SP20: each of the two PSU draws only 220W on wall! With only 440W I can get 940GH, e.g. 0.47J/GH on Wall. A 20nm very efficient Knc Neptune running 3.3TH at 1900W on wall, that is barely 0.58J/GH. And SP20 at 1.4GH draws around 800W, on par with Neptune, it is definitely a nice choice given the current market price of $659 per unit, very well engineered product!

### Reply 9:
That is the lowest I have seen. Wow that is a impressive under clock.

### Reply 10:
those are the lowest numbers yet. damn they are good.please show a screen shot of the settings page.

### Reply 11:
Now after a restart it turns to 900GH, and ASIC stats shows lower frequency at 595Hz. Maybe due to rise in room temperature, anyway, settings are all set to 0.6

### Reply 12:
I'm personally thinking of buying a better fan and swapping it in, wonder if that'll make a huge difference?

### Reply 13:
And the only problem for home mining is its noise, just like a vacuum cleaner running, it is impossible to run at home. With even one door closed I can hear it clearly far away. So either you run it in a specialized garage/mining farm, or you have to take some modification for the cooling system. I will take it apart tomorrow to see what I can do with itI suppose that the original fan deliver a huge amount of airflow like 200 CFM maximum, but when heavily under clocked, maybe a general low CFM/noise fan can deal with the heat

### Reply 14:
Currently I can put it close to window, where 5c cold air are sucked into the room, maybe even a GT1850 (which is almost silent) can deal with the heat. But who knows when summer comesJust checked the fan, it is more than 2A, definitely over 200 CFM, this is standard for server application, but not suitable at home

### Reply 15:
Thank you for the review.

### Reply 16:
Just upgraded the firmware to the latest version 2.5.33, now I can drop the fan speed to 20 percent, still plenty of airflow (more than 100 CFM) but noise has come down quite a bit. I think if it is a pwm fan, even 10% could work, since now the back end temp is mere 46c degree, and I have seen some miners have a backend temp as high as 70c degree

### Reply 17:
Thank you too for letting us review such a great product!Before I started to operate SP20, I thought this kind of products are just like many other miners on the market: You stack them up in a mining farm and pay lots of electricity and cooling cost, and sell the coins to cover these cost, and bring down the bitcoin exchange rate during the process. I even planned to give it to friends who are interested in bitcoin after this reviewBut after seeing the stunning efficiency of this miner, I'm very impressed. I had a feeling that the old good mining time is back: With this unit running at 500W, the electricity cost is neglectable, so anyone can just hold on to all the mined coins without selling a bitNow I'm very interested to run it for an extensive period of time with a modified cooling solution

### Reply 18:
Just heats up quicker.

### Reply 19:
The heat sink on SP20 is just entry level plain aluminum heat sink, they don't have huge surface area like those heat pipe heat sink with many thin alumin<rest of thread truncated>
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8924,"Date: 2015-03
Topic: Bitcrane
### Original post:
I came across a website called bitcrane . Has anyone dealt with them ? Im really debating on whether or not to get one . They dont seem to know what power efficiency is .

### Reply 1:
You should check for a Bitmain S5, a SP20 or a Avalon 4.1

### Reply 2:
One man called dogie has. <link> really, why do you want to get Bitcrane?.. Some day soon there will be (should be) released new miner by Bitmain, wait for it... It definetely will be twice more efficient...

### Reply 3:
Go with Bitmain Antminer S5 or Spondoolies Tech Yukon SP31.Avoid Bitcrane as they are unlikely to have more products out and they use hard to get chips from a scammy company and Avalon has caused millions of dollars in losses to the community so avoid them just because it is the right thing to do.

### Reply 4:
Here is the review by dogie <link>

### Reply 5:
I'm wondering how many people else will post here a link to review by dogie?..

### Reply 6:
Just those that support Technobit / Dogie I guess.

### Reply 7:
Thanks . WHile talking to them they didnt seem to know what they where talking about . While talking to bitmaintech they said they werent going to update the s4 .

### Reply 8:
I know you hate Technobit so much. But as long as there are peoples need my help, i will help them. That included technobit.If you check my post, you can see which company i support now. I support almost all of them.

### Reply 9:
One *dog called dogieThat's based on something other than thin air right?Also known as helping to increase the value of the estate in order to reduce the damage done to consumers of said company?Then its a good job Canaan Creative aren't Avalon. Its as silly as me blaming you for Technobit's problems, they're just not the same thing.

### Reply 10:
Is not a good buy but the company is legit and they did in my opinion the best miner based on the HashFast chips, a nice unit for a museum.RegardsJuan

### Reply 11:
They are outstanding looking miners and appear to be very well designed. But they were terribly late to market and their time has passed. Efficiency, foot print, speed, cost have all improved significantly. They were old when they were first rolled out.There 7 Th/s miner is a monster. I don't think they consulted any large scale miners when they designed that.

### Reply 12:
You support Technobit. Not their customers.You should be warning people OFF them not promoting them and hoping for Marto to pump out more crap and late products.Be honest Technobit is a mess and people should avoid them.Let us be clear. Avalon or whatever you call them now are the same people that caused millions in losses to this community. No matter how DOGIE wants to play it you would be advised to avoid anything from that company in solidarity for those that lost a lot of money on their bullshit and they never ever compensated anyone for that nor did they apologize.There is little left in consumer based mining and thankfully that means people who continue to prop up companies that have scammed and are scamming will have little to support as things move forward. End of era but clearly you need to avoid Avalon 4.1 and Technobit as well as Bitcrane.

### Reply 13:
I will let you handle the warning jobs. I am a customer support after all.

### Reply 14:
Support isn't support when you're ignoring fraud. Dogie knows all about that.Enjoy helping people you could have saved the hassle of buying from TECHNOBIT with a simple warning. Did you invest in his latest scam or is supporting it by expressing how you are anticipating a 25,000 scam on BTCjam also part of your altruistic support?

### Reply 15:
Somehow the same people are _always_ on the same side of the fence when issues occur. It must be magnetism .. can't explain it otherwise. If you have any little doubt that the manufacturer is shady in <truncated> or any other thing you dream on .. better avoid giving them your money. Unless you like charity, having too much of them .. or circus, watching the replies here.

### Reply 16:
The people here is not kid anymore. Judge the manufacturer / seller by yourself. Read the forum before buying. Ask in forum. Run ROI calculation.Bitcoin is adult thing, not for kid. Agree

### Reply 17:
*sigh*, what is it now?

### Reply 18:
10/10 on ethics right Dogie...10/10 on time shipping right Dogie...Ethically I think both Zich and Dogie are compromised.Neither side with the consumers on issues like this and that is telling. Oh so it is buyer beware and you can continue to promote a company completely caught red handed lying to people. Well Technobit is clearly predatory and has been for years. Simply no excuses at this point to support anything they are doing given the level of fraud. Suffice to say that no one really should recommend Bitcrane or Avalon 4.1 simply on price / efficiency points as other have.Choose reputable suppliers and producers.1. Spondoolies or Bitmain2. PCFli thread for BitmainThese are good choices.O<rest of thread truncated>
","[
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    ""hardware_name"": ""Bitmain S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SP20"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 4.1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Spondoolies Tech Yukon SP31"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""HashFast chips"",
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11887,"Date: 2012-05
Topic: Win XP mining help needed
### Original post:
I just brought rig but I can not start mining. The problem I am facing is the win XP can identify the card, but the GUI or CG miner can not. And the rig can not be booted into BAMT or Ubuntu with stick as well. At first GUI miner said can not find openCL GPU, later, after I updated all the drivers to be latest, such as 2.5 OpenCL, the GUI miner can be booted, but I have only one usable miner, which is the CPU. Help needed ASAP!!! Thank you guys.

### Reply 1:
<truncated> telling us that it cannot detect ""the card"" ""but windows does"" and then later you state that ""i only have one usable miner, wich is the <truncated> graphics card do you have?If you do not have a GPU, Do not bother trying to mine bitcoins, Your just going to burnup your cpu.

### Reply 2:
I have a 5750, two 5870 and a 6870, to get started, I only tried one of them at the same time. By ""windows does"" I mean that I can find them in device manager and CCC, by ""I only have one usable miner"", I mean the GUI considering I only have one usable miner.

### Reply 3:
o.0 Do you have Cat12.4? Those drivers fucked with me personally, But i heavily doubt that 12.4 would do such a thing...Friggin cgminer doesnt show it? Do you have TeamViewer? perhaps i could take a look for you

### Reply 4:
I do have CCC12.4 and I tried different drivers a lot as well, to make them work. I am out of house, maybe we can set up a time to work this out. They are frustrating, I hate the feeling that 1.2 G computing power is wasting in front of me.

### Reply 5:
So even plugging one card in at a time... The Mining softwares do not detect a card? and windows does? Sorry but thats outta my skill range.

### Reply 6:
That's fine. I know it is weird. All the mining software are telling me that no usable GPU. But the graphic is definitely working as I can see the things on the screen, and it is identified by CCC and device manager.

### Reply 7:
I can only think of somekind of error with your openCL drivers....fwiw... win7 is PISS easy to install..

### Reply 8:
The latest is not always the greatest.I suggest using 11.12 or 12.1 driver for using 5xxx or 6xxx cards, and using 2.1 SDK for 5xxx cards and 2.4 or 2.5 for using 6xxx cards. Guiminer, and some other miners/frontends, will not detect 2.1 unless 2.4/2.5/2.6 (2.6 is not recommended, much slower) is also present. Verify your cards, SDK, and driver with GPU Caps viewer.

### Reply 9:
On Windoze XP I liked using Catalyst 11.6. Had to use dummy plugs on the GPU's that didn't have monitors though.Sam

### Reply 10:
make sure your copy of XP is fully up to date (SP3 etc). the latest AMD drivers need some .NET stuff to I believe.

### Reply 11:
Solved by installing win7.

### Reply 12:
I would call that a work around as opposed to the solution. You have no idea what your original problem was so you may be doomed to repeat it.But I'm glad your up and running now.Happy hashing,Sam

### Reply 13:
:O I think thats the first time i've ever seen a fwiw be worth Anything.. yaay! i was helpful afterall!

","[
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    ""hardware_name"": ""card"",
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    ""hardware_name"": ""CPU"",
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    ""hardware_name"": ""11.12 driver"",
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    ""hardware_name"": ""12.1 driver"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""2.1 SDK"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""2.4 SDK"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2.5 SDK"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2.6 SDK"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Catalyst 11.6"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""XP"",
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22341,"Date: 2018-02
Topic: Antminer s7 running under 2 GH/S
### Original post:
What power supply are you using?

### Reply 1:
Bitmain APW3++

### Reply 2:
Give us a screenshot of the status page and maybe a dump of the kernel log if you want any help. We need details to assist.

### Reply 3:
On 110 or 220? It'll be underpowered on 110 and could cause the symptoms you describe.

### Reply 4:
When I set it up it ran fine but after a few hours it nearly bottomed out. I unplugged and plugged it back and it picked up a bit but now it has slowed down again.Temps are 50, or under, and ASIC is normal<link>

### Reply 5:
On 110 or 220? I don't know what that means. Outlet voltage? If that's it, it is only 110

### Reply 6:
Yes, outlet voltage. You need to run that PSU on 220V to get full output, or get a small, cheap 600-750W PSU and power one board with that, and use the APW to power the other 2 and the controller.

","[
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    ""hardware_name"": ""Antminer s7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain APW3++"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""600-750W PSU"",
    ""hardware_is_owned"": false
  }
]"
2145,"Date: 2013-11
Topic: [Open] Jupiter KnCMiner Shares - Escrow by SebastianJu *Updated W/New Miner
### Original post:
To anyone who might be interested, I can have 500 GH/s installed and mining within one hour from now. I have access to about 2+TH/s of Bitfury mining equipment from a source locally. The price for 500 GH/s is 50 BTC. Because I have a local source for the hardware, I can turn generated revenues into more hashing power within a matter of a few hours instead of weeks or months, that means I can leverage investments quickly! My companies focus is to rapidly reinvest earnings through various strategies. Invest once and let us do the work for you!

### Reply 1:
I have updated the share count, we have a total investment of 6.5 BTC thus far. There is still time to get in on the November delivery if we don't waste any time!

### Reply 2:
Posted this in the official thread.

### Reply 3:
Forgot to add the address!

### Reply 4:
With the price of Bitcoin being at an all-time high of over $350 I think it is a good time to make our move on hardware purchases. To encourage investment, I am offering Founders Contract status to every BTC investment made today no matter the amount! I will also give a 15% deposit credit for all investments and 20% of all hashing power will be dedicated to pure outlays (each investor will get an even amount of 20% of generated bitcoin based on their total BTC investment.) To summaries: Every investor will receive a 15% credit in their account and Every investor will get a portion of 25% of the companies profits. I need to raise 250 BTC for an early Dec. Terraminer preorder for 10 TH/s + 19 BTC for the current Jupiter KnCMiner HPC.This offer is only good at the ~ $300 BTC exchange rate, if the price falls to far I will have to adjust the totals.I have added an easy payment and signup form to the company forum. Click Here!Don't worry about what kind of options you want for your share position, I will honor any request you wish at anytime you decide, this way we can take advantage of the current price of BTC and not waste time on other things that can easily be worked out.Time is of <rest of post truncated>

### Reply 5:
I have added an easy payment and signup form to the company forum. Click Here!This has been added to the post above.

### Reply 6:
Excellent job on the easy buy form and the live view! The ""I'm not sure what type of share"" box is perfect.

### Reply 7:
Thanks!

### Reply 8:
tick.. tock.. tick.. tock.. tic....[EDIT:] Time is up....

","[
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    ""hardware_name"": ""500 GH/s mining setup"",
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    ""hardware_name"": ""2+TH/s Bitfury mining equipment"",
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    ""hardware_name"": ""Terraminer"",
    ""hardware_is_owned"": false
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4328,"Date: 2013-02
Topic: DeepBit Reclaimer ASIC prepare refunds
### Original post:
From official comment

### Reply 1:
Did people send bitcoins to match local currency? Or will they get back same amount of btc? If yes, nice investment for a failure!

### Reply 2:
I am not very familiar with that bonds, I know people bought bonds for bitcoins at <link> which could be exchanged to ASIC products in future.I dont know whether they converted to currency or not.

### Reply 3:
Wait, so Tycho's ASIC project bit the dust too? Shit, it means we're only left with BFL and Avalon? Must be some sort of ASICurse afoot. If one more craps up we're gonna have a monopoly.

### Reply 4:
Monopoly of what? Of scam?Don't you see nobody will get asics?

### Reply 5:
yeap,i think nobody will provide ASIC at the end

### Reply 6:
What if you can't make sense out of the subject/OP? :/

### Reply 7:
I suppose its good that this wasn't also a GLBSE asset (Mod note: please keep this thread on topic. If you're not sure what the topic is, please consult the subject line and original post).

### Reply 8:
<link>

","[
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]"
11049,"Date: 2021-11
Topic: Entry level hardware
### Original post:
I want some suggestions for entry level miners.make, model and price.

### Reply 1:
Gekkoscience Compac F, Futurebit Apollo BTC, Antminer S9, AvalonMiner 841.There is a quick list, of course there are lots of other gear too.

### Reply 2:
Where would you suggest would be the best place to shop for these miners? Thanks.

","[
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    ""hardware_name"": ""Gekkoscience Compac F"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""Futurebit Apollo BTC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AvalonMiner 841"",
    ""hardware_is_owned"": false
  }
]"
5534,"Date: 2013-06
Topic: Has anyone ordered from http://btcminingrig.com?
### Original post:
It just seems like too good of a deal and they actually have asic's in stock to ship. Should I invest in one or is it a scam?

### Reply 1:
Scam looks like ASICrigs.comBut do alert BFL, I'm sure they would love to sue these guys!

### Reply 2:
How did you come across this out of curiosity.It is evidently a fraudulent site that is ripping off images from BFL's product lineup. Would not recommend investing with this site.

### Reply 3:
There's a guy (sorry, forgot the nick) pushing them at btc-e.com exchange in the ""trollbox""...Smells like same guy/people as ASICrigs.com (see for yourself -- design, descriptions, ... )* Everything installs automatically in your computer -- same as ASICrigs and totally stupid for anyone who is actually mining bitcoins -- but it's not for those of course * BFL design ripoff with removed logo (same as ASICrigs.com had)* lots and lots of inconsistencies* pricing is crazy (chips cost that much as the complete miner), 25GH model is more expensive (in GH-per-$) that 5GH model* Avalon chips in ANY design probably wouldn't even fit in the box for a 5GH/s miner not speaking about 25GH ""model"" -- with same case as 5GH/s (...to save costs -- reply in comments -- lol).* No mention about power consumption.* with avalon chips 25GH/s miner would take about ~230W -- I would like to see that power source which would fit (together with the miner inside that mini-case) -- even BFL, whose design they've ripped off, has external power sources * I'm not really sure avalon has sent ANY chips (apart from samples) to anyone -- yet they have full stock of miners with 24822.695 chips * apparently they're no<rest of post truncated>

### Reply 4:
Yes, someone was pushing them on BTC-E trollbox. I saw that as well, looked at the website and quite likely taught it was a scam. Seems too good to be true. I checked the phone support and it gave me the message that the number is actually not in use.I would seriously advise staying away from this company. Too high of a risk!

### Reply 5:
It's blatantly a scam! I don't know why anyone suggests an ounce of doubt! Supposedly operating out of China.Rip off of popular mining devices from BFL.Exact same scam as Asicrigs.com, after they supposedly pulled their scam, which they haven't.

### Reply 6:
Yah think? When will people just call it straight out: someone who cannot possibly have the technology, violates legitimate vendors' IP and copyright protections on their website, and has fraudulent contract information is not ""too high of a risk!""They're fucking scammers! As long as any one even thinks ""gee, I want this so much to be true, maybe it is,"" this shit will go on.

### Reply 7:
what a scam, check the below picspoor photoshop skills <link> this <link>

### Reply 8:
should i go bust their page with this original picture?

### Reply 9:
Do it!

### Reply 10:
<link> friend request will screen cap once the ""damage"" is done

### Reply 11:
LOL, i see they've fixed a lot of ""inconsistencies"" I've mentioned in my previous post LOL ... maybe there's still some hope for them... Maybe they'll even get some product in the future to sell (updates are:- some units are sold... stock has begun moving- there's a power consumption specified)So you're reading this you scammer... You've forgot to specify, that power source is included (or maybe target audience's expecting integrated power source, no worry it wouldn't fit in that tiny butterfly lab's box Should have specified some made up numbers instead... Would have been more fun seeing them on their page

### Reply 12:
+1 or thumbs up or what...

### Reply 13:
there is a thread in chinese side.<link> called up the number the listed on their site +86 13552837924, as expected its no longer in used.

### Reply 14:
Blatantly he lurks here, blatantly he's not accepting friend requests today! Lol!!

### Reply 15:
was just going to sleep, and the page accepted me. but they are cleaning the comment fast, any idea how to perma comment them ?

### Reply 16:
just for the laughs ... adding the comment via API every time it's deleted? 8-Dmaybe there are people who aren't active on this forum, who might benefit from the information being present on FB, but don't know if it's worth as this thread is 3rd in google for ""btcminingrig.com"" ;-)

### Reply 17:
There is nothing to consider with that BFL Like scammy rigs

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    ""hardware_name"": ""25GH model"",
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    ""hardware_name"": ""5GH model"",
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23685,"Date: 2021-09
Topic: T17 whole machine can be sink in dielectric fluid tank?
### Original post:
Hello guys, I am newbie about mining and i need to know many things about mining with miner. I run T17 in my house and it's run so noise. I try to low noise but not work. So, i google about to silent miner and found that cooling and silent can be fix by sink the miner to the dielectric fluid tank. In video, they showed with s9 and PSU is out of the tank but T17 is attached PSU. So i curious ""T17 whole machine can be sink in dielectric fluid tank?"" and is there any problem?please suggest do and don't things.

### Reply 1:
I never heard someone succeed running a t17 in mineral oil it won't work on t17 with original firmware it will detect some error like no fan or slow but if you could flash it with custom firmware like braiins OS it might work. Check their official thread here <link> try to ask if someone succeeds in running t17 with mineral oil.

### Reply 2:
Thanks for your information.

### Reply 3:
I don't see why you can't, you will have two problems you need to fix.1- The miner's fans, since you have to remove those for immersion cooling the control board won't allow the hash boards to hash, and thus, you have two solutions, running custom firmware like Vnish which has an option to disable the fan check, the other solution would be a fan simulator, it's something you can find online that ""tricks"" the control board by giving it a false signal similar to the one it would get from the actual fans.2-The PSU's fans:This will be a bit more tricky to solve, the PSU needs the fan to be spinning in order to function, so not sure how you would bypass that, however, I believe the control board controls the PSU, so my guess is that these custom firmware will also handle the PSU fans when you activate immersion cooling option, to confirm this, head to their official topis and ask there, check AwesomeMiner, Asic.to and BO+.

### Reply 4:
Thanks mikeywith, I can't try with custom firmware because i update antminer firmware and then my SD card is not work.May be i need to buy another control board to install custom firmware. Or i try another way to low noise.

### Reply 5:
As far as i know there is no problem with the PSU missing fans, it may stop providing power if overheated. And yes there are many people doing immersion with Braiins OS+ with all the S17 family.

### Reply 6:
It's unlikely that you are going to need a new control board, flashing these gears with an SDcard is a bit tricky, some sdcards just don't work, you need to try a few of them before giving up, try the one with the small size, also, make sure you are following the instructions step by step.

### Reply 7:
The manufacturer did not use an SDXC capable chip, so you are restricted to 16G or less from their documentation (32G SDHC may work).There is the chance that the micro sd card needs to be inserted upside down.Or, the contacts are dirty, or you need to keep pushing the sd card physically during the whole process.And, some control boards might be missing the micro sd control chip for unknown reasons.Sadly, there is some malware out there that triggers the efuses with the malicious intention of blocking you from removing out their malware hash stealing fw. Some spread in Russia, China, etc. This is why you must never leave default or simple passwords in the miners, or have windows PCs in the same LAN.

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    ""hardware_name"": ""SD card"",
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3975,"Date: 2017-10
Topic: [GROUP BUY WORLDWIDE]1TH Bitmine - 2200 USD Shipping next day - worldwide
### Original post:
I know they are working on it and should have it up soon.

### Reply 1:
Are you joking, we were fighting yesterday for making me a price of $2450, since I have ordered 5 more units (7 in total) and now you make it $2350 including shipping ??I cannot understand how you work.

### Reply 2:
Anyone have any pictures of their units running? How is the build quality? I am a little nervous ordering from anyone other than bitmain.

### Reply 3:
HiI do have pictures and I am posting my review of the unit on cryptocoinsnews.com in the next few hours. I will post a link to it here when I am done.I have also done an interview with Bit-Tech as well. I do have confidence in their business model and work ethic.The unit is a good unit. They are also getting on their website the factory images in case they are needed.

### Reply 4:
Yes i have .. i will post them in a few minutes

### Reply 5:
bit -tech, lock 1 up for me, PM'ing OGNASTY right now!!

### Reply 6:
BITMAIN daily price drops = competition price dropskey word here is daily, although bitmain does not really adhere to the daily but on occasions.

### Reply 7:
I hope you are joking.We had a fight yesterday and I asked to make me a price for shipping instead of $200 to $150. I would order 5 units.He said NO, and price remained $2500 for each, no matter the quantity.Today, he says $2350 including shipping to everyone.I am sorry but this is A JOKE!

### Reply 8:
I have now sent you an email, await instructions. thanks.

### Reply 9:
email sent would like to use escrow through OgNasty. Sent a heads up PM to him.

### Reply 10:
Is it safe to buy from OP without escrow ?

### Reply 11:
At your risk.But why not use one?

### Reply 12:
Can someone please tell me what the price is for the 1Th/s miner?

### Reply 13:
It should be something like $2350 - $2400 including shipping, and payment through btc.If wire transfer, then additional charges apply.But the op changes the price frequently.Lets wait for him to say.

### Reply 14:
2350 with shipping

### Reply 15:
I purchased my unit by paying BTC directly to Bit-Tech. No problems.

### Reply 16:
ok bit-tech, Ognasty has been paid. Email has been sent to you. It is morning time now in China, so hopefully I get a reply real soon. Thanks. ps. 2nd email sent with trans id. showing payment, on stand by.

### Reply 17:
Looks like a Dragon. Or Dragon looks like theirs.

### Reply 18:
which do you prefer swimmer63?

### Reply 19:
I have just arranged to purchase 26 units from Bit-Tech. I hope the deal goes smoothly. Bit-Tech please confirm the purchase.Thanks

### Reply 20:
well u made their day, and hope/glad mine is in the queue before those 28, wowser.

### Reply 21:
Yes you are in line, dont worry

### Reply 22:
He sold 2 in stock units before I could pay so it is now 26

### Reply 23:
Payment for the 26 miners sent TXID <truncated> please confirm receipt of fundsThanks,Joemde

### Reply 24:
Does that mean you are out of stock Bit-Tech?

### Reply 25:
Correct we are out of stock now. Producing 100 more units should be avaible in 1-2 weeks maximum.

### Reply 26:
I bought 1x right before the 26. Please confirm that you have received my payment. <truncated> ID: <truncated>

### Reply 27:
if all goes well I will probably line up again

### Reply 28:
Was my order one of the two that you received before the large order? OGnasty has the refund address if not.

### Reply 29:
Only order i accepted by escrow is sbfree, remaining is out of stock. sorry guys

### Reply 30:
Any chance of participating? am I too late?

### Reply 31:
I believe 2nd one is my purchase paid through BTC. TXID: <truncated> please confirm. If not, please refund. Thanks

### Reply 32:
Quick response and refunded ready. Thanks bit-tech and OGnasty.

### Reply 33:
Yeah, waiting for the next batch as well Hopefully the next one I buy will be closer to 1tHs instead of the current 950gHs I'm getting

### Reply 34:
Got today my 2 Bittech miners.Thank you !Everything perfect! I did NOT use escrow and the guys are decent.Sorry if I was aggressive at the beginning.Waiting for your next batch!!!

### Reply 35:
Im interested in that.i will take 3 units once they avalaible.To guys who received units can you provide info about quality etc?

### Reply 36:
Nice machines, similar to lketc dragons, 4 blades.Hashing average to 950gh/s .i will try to post pics tommorow.ps. Here are pics from Xian01 <link>

### Reply 37:
Go for 192.168.0.87 and voil

### Reply 38:
Thanks, i already tried that (in fact that was the first thing i tried, both via web interface and ssh, no device reached.Also, the first time i turned it on (without connection), the fans only turned gently.Now the fans turn full throttle all the time, although it is not mining. In my opinion that is another hint for a damaged operating system? ---> no fan input---> fans go full throttle?I also tried scanning the ip<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""units"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bit-Tech miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""lketc dragons"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bittech miners"",
    ""hardware_is_owned"": true
  }
]"
19308,"Date: 2014-05
Topic: I'll give the first person .1 BTC who can help me get my antminer mining
### Original post:
Well here's the story. I am connected to the Antminer console and also the internet by Ethernet. I can input my pools into antminer but when I check the mining status...nothing. Any ideas? If you do happen to get this godforsaken thing mining I will compensate you with BTC, or the equivalent in some Altcoin if you prefer. Thanks so much!

### Reply 1:
It takes a few minutes to begin, at least from my experience. First time use of my S1, it took 5 minutes or so to start. Make sure your mining address/s is correct.

### Reply 2:
Does it say ""Changes: x"" in red font in the top right corner. If so you need to click the Save and Apply button.

### Reply 3:
I just can't understand everything seems to be in place, console open, top three pools added but nothing ever happens on the mining screen. Sorry if this sound newbish, I'm not a techie really. I've never had any problems with any of my other equipment.

### Reply 4:
Your miner might not be seeing the internet.If you have a Dlink router like me, edit your WAN toProtocol: Static AddressIP4: 192.168.0.250IPv4 netmask : 255.255.255.0IPv4 Gateway 192.168.0.1IPv4 Broadcast: blankCustom DNS servers: 8.8.8.8Save and apply.Reboot, with a direct ethernet connection from Ant to router or switchIf this works, you can access your Ant via a computer on your network by directing your browser to <truncated>

### Reply 5:
Thank so much for your reply. I input your suggestion but when I save and apply the screen just hangs, saying waiting for changes to be applied.

### Reply 6:
Good. Disconnect from your computer. Plug ethernet directly from ant to your router or switch. Reboot the ant. wait 2 minutes. See if the green lights start hashing on the sides of the Ant.If that doesn't work, you can reset the ant with the reset button, then try connecting via wifi.

### Reply 7:
OK, I'll write you instructions after I get home from work.Happy mining!

### Reply 8:
Do u wish to be payed in BTC?

### Reply 9:
sure!

### Reply 10:
Post your address

### Reply 11:
<truncated>

### Reply 12:
PM me your email address and I will send tonight or tomorrow.

### Reply 13:
I sent the BTC let me know it arrives.

### Reply 14:
I just typed up <truncated> your email?

### Reply 15:
First, make sure S1can access the Internet, you can check by <truncated> then you may have to wait some time to see the status of the task plan is set to perform a 20s, cgminer start also take some time, so wait for 1-2 minutes is a good suggestion.

### Reply 16:
Thanks for the instructions, I really appreciate it. I would have wasted more time fucking with it without your help!

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Dlink router"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""switch"",
    ""hardware_is_owned"": false
  }
]"
18018,"Date: 2013-09
Topic: ""Share is above target""? help me!!!
### Original post:
I made a .bat file for CGminer and when i run the file its showing that the GPU's are trying to do work but rejects all of it

### Reply 1:
you mine ltc ? if so did you put the --scrypt argument?

### Reply 2:
no im mining BTC with Slush pool and i made the .bat with the flags from the Wiki

### Reply 3:
What hw do you have?I have the same problem with 2x BFL 5GHS miners. 1 unit worked fine, the other at 70% efficiency. They both stopped at the same time recently and I couldn't made it work with other mining software as of yet.I think the units are dead....well done bfl...

### Reply 4:
Why don't you try the flags from the Readme. If you still have trouble post your command line.Or maybe post in the CGMiner thread as well.Sam

### Reply 5:
share above target means you're trying to mine scrypt on a bitcoin pool or trying to mine bitcoins on a scrypt pool

","[
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    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFL 5GHS miners"",
    ""hardware_is_owned"": true
  }
]"
14702,"Date: 2013-05
Topic: Mining with invisible/hidden console on windows?
### Original post:
I'm trying to find a way to run a miner without a gui on windows without it being visible (other than in the task manager). Anybody got any ideas on how to do this?So far, I've tried hstart (<link> which lets me run batch files without the command prompt, and also I've tried a vbs script. With both methods, the poclbm.exe process seems to start fine, and I see it in my task manager, however, when checking my worker stats in my pools, I see that they're not working at all. However, when removing the /noconsole flag from hstart but otherwise running it the exact same way, I get poclbm.exe with the console and it shows my worker as active in my pool.So do you guys have any experience in getting this to work? Know what I might be doing wrong?

### Reply 1:
Use zhider, works great!

### Reply 2:
afaik poclbm and poclbm-gui are both open source.I guess you could manipulate it so that the poclbm-gui will not use a tray symbol or something like that.If you found a way pls let us know.

### Reply 3:
I've asked the same question a few days ago. No real answer, after searching the forum I arrived pretty much at the same few things you've tried to no avail. I've been busy building my 1st mining rig though.However, I also tried window's task scheduler with and without condition on both XP and Win7 however I also faced the same problem. When it's ran like this, poclbm runs find but doesn't mine. I also tried it with guiminer which have 'auto-start' but still it doesn't mine.I hope someone would be able to shed some light on this.

### Reply 4:
I like <truncated> which you can get from <link> where I originally found the link here: <link> It's only 2KB and I use it for a scheduled task that rysncs a file on a remote server. Security software may complain about it, seeing it can be used for malicious purposes.If you still want output, you could make a shortcut like:Target: <truncated> cmd /C ""miner.exe --arguments values > output.txt""Start in: <truncated> have to kill them from Task Manager, which isn't a big deal with miners.

### Reply 5:
Funny, I was just about to start a new thread on this topic then this one popped up to the top of the list!I've tried a couple of options too without any success.I've noticed that when you attempt to run poclbm OR phoenix without access to the GUI, it cannot find the platform ID. Here's the error:Traceback (most recent call last): File ""poclbm.py"", line 27, in <truncated> clGetPlatformIDs failed: invalid/unknown error codeI know nothing about coding so wouldn't know where to start trying to get around that.Anyway I am also still searching for a solution so here's hoping we can work it out

### Reply 6:
And I think we all know exactly why you want it being ran hidden....tsk, tsk.

### Reply 7:
Well with a VBScript, it's quite simple :Set WshShell = <truncated> ""cmd /c cd <truncated> & phoenix.exe -u <link> VECTORS BFI_INT AGGRESSION=7 DEVICE=0"", 0The important part here is passing 0 as the second parameter of WshShell.RunIt tells cmd.exe to hide its window.You will have to kill phoenix.exe (or whatever miner you're using) from the task manager.Of course, replace <truncated> with the folder of your miner's exe,and ""phoenix.exe ..."" with the command you normally use to run your miner.Also, why do you want to hide it?

### Reply 8:
The trick with all this is that you still need a way to unhide it mid-process to check that it is in fact connected and working. I can picture one of these running all day at 0 Mhashes/s and people not knowing the difference because it's hidden.

### Reply 9:
If you have a legitimate use case for this, I would consider an option in my GUI to have no tray icon when minimized. But it seems more likely that you're just trying to be unethical with this. Prove me wrong and we'll talk

### Reply 10:
Use this program:<link> it to come on 10 seconds after the screensaver. It terminates the program when any activity is detected. If you want to verify that it is running, have Afterburner running in the background and check its graphs. Or set your stealth miner as a pool worker and check on it via the web. I am the IT guy at my work, and I have this running on a few machines successfully. The users never notice since it only runs when they aren't using their machines.

### Reply 11:
Well, my reason for wanting this is pretty simple. I'm leaving for military service for 11 months and I'm letting my little sister use my pc while I'm gone, I just want to keep mining and I don't want her to be able to mess with the miner.

### Reply 12:
<link>

### Reply 13:
You'll have an awful lot more problem than your little sister closing an app, if you expect to be able to leave a miner unattended for 11 months.

### Reply 14:
Wow, I am going to work as an IT-guy assistant this summer for two weeks. I might have the chance to do the same. Just need to figure out some sort of self-destruction mechanism<rest of thread truncated>
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]"
12325,"Date: 2013-05
Topic: Verification failed, check hardware with every miner EXCEPT Phoenix
### Original post:
I've been mining for a few days now and when I first started out, I couldn't submit any shares because it always returns a ""Verification failed, check hardware!"" warning.I did some googling and it seems to be a common problem. I tried everything to no avail until I tried mining with Phoenix 1.7.5. Smooth as silk.I'm not sure what's the difference between Phoenix and the other miners. Some enlightenment, anyone?

### Reply 1:
I am seeing the exact issue. Unfortunately, I do not have a solution for you. My setup is (3) 5970s with windows 8 Professions 64 bit. I can tell you that I had a working system before steam updated my ATI driver to 13.4. Since then I have not been able to get back to a good working state. I even reinstalled my entire OS.

### Reply 2:
Same here. I can mine LTC OK using Reaper, but BTC and LTC with cgminer is stuffed. 13.4 drivers on a fresh install of Windows 7.

### Reply 3:
I am assuming that you are using 64 bit windows 7? I have had the same issue with both 13.1 and 13.4. From what I have read it is really the AMD APP SDK version that matters not the driver, but I have not been able to get a working version back up. Before I reinstalled my OS I had a working setup with 13.1 drivers.

### Reply 4:
Phoenix is a good miner. Do you need a different one?CGMiner's FAQ has driver and SDK suggestions. It is very difficult to back level the SDK if you installed 2.6 or later. So if you don't need SDK 2.6 for the 7xxx series cards be careful to never install it.Sam

### Reply 5:
Phoenix is okay, but I was seeing much better numbers with cgminer (1800 MHash versus 2100 MHash). I did install SDK 2.8. I guess it might just be best to try and reinstall my system again.

### Reply 6:
Probably. Make sure you don't go past OpenCL SDK 2.5 for 5xxx series cards.

","[
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    ""hardware_name"": ""5970s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI driver 13.4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Windows 8 Professional 64 bit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Windows 7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD APP SDK"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SDK 2.6"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SDK 2.8"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""OpenCL SDK 2.5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5xxx series cards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""7xxx series cards"",
    ""hardware_is_owned"": false
  }
]"
4314,"Date: 2013-01
Topic: Maybe everyone here will learn a lesson about pre-orders
### Original post:
I nearly fell victim to this bullshit myself. Fortunately, I got my credit card refund out of bASIC over a month ago. I saw the writing on the wall and knew this shit was going to get ugly. I was supposed to actually help Tom put the units together. We had phone calls and numerous communications. Then the communication got slower and the delays started. Something didn't smell right.Maybe every other vendor will ship, but it wouldn't surprise me if some don't.Funding a business venture with pre-order money is bad business. It's especially bad business if you are the one putting up your money.THERE IS NO REASON FOR ANY SANE PERSON TO BE A CAPITAL INVESTOR AND NOT RECEIVE AN EQUITY STAKE OR INTEREST PAID ON YOUR CAPITAL!If you give a business your money in advance and there is no specific, contracted date for you to receive your product, then YOU are a capital investor. Especially if there isn't even a working documented prototype.Simply getting a ""place in line"" is not good enough. You should be compensated for assuming so much risk. Yet the foolish people on this forum justified this bullshit for months.How long has BFL held money now? 6 months? Go ahead justify away, but the amount<rest of post truncated>

### Reply 1:
I'm kind of embarrassed that I waited as long as I did to request a refund. I feel like I just *barely* made it out unscathed (aside from missing out on ~20% gain in BTC value).In retrospect, the hosting plan announcement should have been enough evidence for me to decide to get out. It said 3 words about the product, and the rest was diversion.There were many small signs before that too.

### Reply 2:
The bottom line is people should never give anyone money in advance to simply purchase a product.A deposit? Sure, especially on a product which is custom made. Although ASIC's are only custom when originally designed.If these companies had enough capital to fund the development of their products through their first production run, then there was NO good reason for them to accept pre-orders.They could only be doing this for nefarious reasons, either to squelch competition or because they were lying about their capital position.Again, I could understand if they needed to match their initial production run with expected demand, then they would take a deposit to be sure their customers were serious.The only ASIC project which had the right to take pre-order capital was block eruptor run by friedcat. That project was clear about risk and will be paying a return to their investors for that risk.

### Reply 3:
This is a unique time in Bitcoin's history. I don't imagine this will be repeated again. I think you lack perspective in not realizing that these products would have not been created without the pre-orders. It simply was not possible. In the future you would be a fool to preorder. Most understand that this process was a gamble. Some will win and some will lose.

### Reply 4:
That's BS. These projects didn't NEED to happen in the first place. The 51% thing has been debunked as a viable threat because the attacker shoots themselves in the foot.Someone would have come along and developed an ASIC on their own regardless.I still stand by my original post. If these companies needed pre-order money to FUND an ASIC, then they should have offered terms which reflected the true risk of the project by paying equity or interest on the customers capital <truncated> are for established products were the demand outstrips supply.Pre-orders are NOT an ethical way to raise capital for a start-up project.

### Reply 5:
Hate to say it, but it seems my gut feeling 6 weeks ago was correct.I've yet to see any real level of professionalism from any of these ASIC manufacturer's thats been deserved of any pre-order investment captial. None of them have convinced me yet they are capable of running businesses handling 6 figure turnovers.

### Reply 6:
I disagree.ASIC preorders are high risk but they are also high reward.Take for example Avalon's first batch, which is expected to ship 300 66Gh/s units. This will double the network hashrate. A single $1300 unit will return $2200 in a month ($1460 if ASICMINER brings another 20 TH/s online). This is a ridiculous return on investment that is more in line with investing in a startup than purchasing a consumer product.I placed early preorders with all three vendors. I did this with the assumption that my payment would be used to fund development. I also assumed that I risked losing my money to scams or simply a failure to deliver due to technical issues. When I ordered the upgrade to my FPGA minirig, I factored in a 10-20% chance that BFL was pulling a long con into my calculations. The potential benefits of receiving the first batch of 1TH/s miners out-weighed this risk. If there was no risk, why wouldn't the ASIC companies just mine themselves until it was only marginally profitable<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""FPGA minirig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon's first batch 66Gh/s units"",
    ""hardware_is_owned"": true
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]"
22769,"Date: 2018-10
Topic: Antminer S9 Hard Reboot
### Original post:
Hello and thanks ahead of time. Is there a way to hard reboot (power cycle or equivalent) an antminer s9 remotely? The reboot in the gui doesnt seem to fix alot of issues that a hard reboot (unplug/replug) solves. I can use putty to access the miner. Just wondering if there are linux commands to shutdown and restart that is equivalent to a hard reboot.

### Reply 1:
The only way to perform a hard reboot is to remove the power and re apply it, unless you have a smart PDU or someone to unplug it / disconnect the power I don't think you'll be able to do what you want.

### Reply 2:
GUI reboot is soft reboot. Also the API reboot call is a soft reboot.If you use putty you can access the shell and then run /sbin/reboot which seems equivalent to a hard reboot.

### Reply 3:
I have found you really need to power cycle the unit to reinitialize cards that are having issues. You can buy a device that allows you to SSH in and physically switch power on and offYou want something like this:<link> you need to make sure it supports your PSU (110v versus 220v) and the proper amperage.The link I posted was for informational use only, it is not a specific recommendation.

### Reply 4:
You can try this method from here On-board auto reboot with Antminer S9 (daily reboots) At least you can do the hard reboot automatically and schedule what time you want to reboot it. For now, I don't find any methods that you can fully reboot remotely your miner, the above link maybe solved your issue.

### Reply 5:
I just tried /sbin/reboot and it restarted a board that would not restart using the gui reboot. Thanks guys

### Reply 6:
Glad I could help! I haven't yet found any difference between /sbin/reboot and physically power cycling the miner.

","[
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""smart PDU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
11914,"Date: 2012-05
Topic: Akbash (1.0.4) - watchdog for cgminer/bfgminer - H/W monitoring, emails, HTTP
### Original post:
Having problems getting akbash to connect and relay through the SMTP servers.rc: 421

","[
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    ""hardware_name"": ""akbash"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""SMTP servers"",
    ""hardware_is_owned"": false
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]"
14657,"Date: 2013-04
Topic: WTB: used but functional GPU's removed from mining service
### Original post:
Is anyone throwing in the towel yet and quitting GPU mining? Perhaps with extra GPU's to spare? I'm not looking to mine but I am building a new gaming machine and would consider a used card for perhaps 1/3 of original retail price since it's been overclocked and run at scorching temps. Anyone interested?

","[
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    ""hardware_name"": ""GPU"",
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]"
8142,"Date: 2014-07
Topic: Official Thread: AMT
### Original post:
Today, 12/26/2013, I received the following e-mail. This e-mail was a result of me placing an order a week and 1/2 ago. I ordered an 80 gh/s (80 GH/s Coin Miner $1,545) hoping to pay via credit card as their site clearly stated that they accept CC on the 2 smaller units. After a week, got an e-mail saying that they can't accept CC and wanted me to paid via Bitcoins or wire transfer. I ignored it and today, I got this.Hi XXX and Merry Christmas!I just wanted to follow up on the order that you placed with us. Do youwish to proceed further with your order and choose one of the currentlyavailable payment methods provided.If you do, please let us know, otherwise we will place another order onyour position in the que.Many thanks and enjoy the holidays:)-- Alyssa TrustenAMT Billing Dep.1254 W. Chester Pike,Havertown, PA, <truncated>

### Reply 1:
AMT stepping it up on their website- Now selling chips- customer support area (password protected so i have no clue whats there).- 1.2 th miner closeout (what does this mean should we expect 2.0 coming soon)good stuff AMT. Looking forward to picking up my order. AMT let us know whats going on. I still have hope.

### Reply 2:
$120 for a 25GH/s nominal chip in QTY 100 with delivery in February? If I could get delivery in a couple weeks I might be interested, but at those prices and timelines.

### Reply 3:
First post is empty why?

### Reply 4:
The OP deleted it because of the ""trolls""

### Reply 5:
Are you near their location? Is their office real?

### Reply 6:
If you paid attention, someone else said they went to their location. It does exist. Their previous office, maybe not, because nobody in the surrounding area even heard of AMT... but the new one does exist.

### Reply 7:
I guess this confirms the use of ""Coincraft A1"" chips...Now all they need to do is sell the assembled miner boards, and they will have a massive market ready to buy them in bulk!From what I understand the ""Close-out"", is how they are saying, ""End of this batch"". The next batch should have new delivery dates, and may or may-not have a new price... It already went up from $5,599.00 to $5,999.00... Might go up again, or back down, or get an upgrade to design for a new model. We won't know until after Friday.I think we lost our chance of getting real direct answers due to the senseless troll-posts and accusations of being fake, to being part of a secret organization, to being in a whole other country, to having impossible specs on hardware. Not as funny to them, as it is to us. But equally as frustrating to deal with.

### Reply 8:
You know, Michael Dell used to assembly his PCs from his dorm room.These folks are essentially assembly systems source from Bitfury and Bitmine (both in Europe), into stand alone units.I don't expect them to really have top notch technical talent.I do however expect them to deliver the goods when their sources start shipping.

### Reply 9:
As I understand it, they have paid a company to MFG the boards. They, unlike BFL, are not assembling the boards themselves. The photo's on flicker show the boards already assembled in Bulgaria, at a factory. The assembly they are doing in-house, is configuring the network-boards to work with X-number of miner-boards, and connecting the physical components. (Same thing alien-ware does for Dell now. Alien-ware does not manufacture anything, they are just assemblers of existing components.)I am sure the boards are being designed by someone with the tools and the knowledge to do so. Might even be coincraft themselves doing the MFG of the boards, to match the chips. (To the specs of the clients.)In any event, the only thing that matters is the delivery and the final operating results of delivered materials. Doesn't matter who made them, or how they were made, if they function and are guaranteed. Though, I am sure that anyone has the ability to do this in a basement. Location is irrelevant. It is not like they are producing millions of units themselves. I would actually find that to be ""unbelievable"", if they claimed such an impossible feat. However, assembly is easily possible, by the t<rest of post truncated>

### Reply 10:
Exactly. That is why their story is completely believable. We know where they are sourcing their 28nm parts, it is bitmine.ch. Bitmine.ch is from Switzerland and has stated in their website that AMT was their exclusive U.S. distributor. Furthermore, does not make sense for Bitmine.ch to send completed units with heavy cases and power supplies. So all that is sent are the logic boards and AMT assembles them.The actual assembly may be different from coincraft after all these cases may be source from china.The current 55nm line appears to be bitfury (from bulgaria), so these are what they are selling for quicker delivery.As far as trolls are concerned, they have motivation to discourage everyone from buying hardware. After all, Bitcoin mining is competitive and the <rest of thread truncated>
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    ""hardware_name"": ""80 gh/s Coin Miner"",
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  },
  {
    ""hardware_name"": ""1.2 th miner"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""25GH/s nominal chip"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Coincraft A1 chips"",
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    ""hardware_name"": ""assembled miner boards"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""PCs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""network-boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miner-boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""logic boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""55nm line"",
    ""hardware_is_owned"": false
  }
]"
5061,"Date: 2013-05
Topic: Low Watt Miners, links and chart- GH/BTC, ROI with difficulty [Updated May 23]
### Original post:
Sorry OP, that i OCR'd your work but more people are faster and maybe more efficientBTCUSD = 122.9513TCEUR = 92.84BTCGP8= 79.57YourWorking1 yr ROI in B. avg increase:UnitLead Time <truncated> <truncated> <truncated> <truncated> <truncated> C <truncated> <truncated> LabsBitForce 252.46250001249 <truncated> LabsBitForce 502.46500002499 <truncated> <truncated> GH/sec2.2745121.99 <truncated> LabsBitForce 52.245000274 <truncated> !scoop64 Chip Unit2.1518048504.40 <truncated> 5 US, <truncated> 5 US, <truncated> GH/sec2.1245122.126 <truncated> Chip2.095640100 <truncated> Chip1.994512279.18 <truncated> Chip1.67282080 <truncated> Time Coin90 GH/s1.29000075 <truncated> GH Unit0.876300072.36 B US, <truncated> 10+0.16400300 <truncated> <truncated> 50.13168013.00 B US, <truncated> Block Eruptor0.123362.6 B US, <truncated> Blade EruptorEnterPoint <truncated> <truncated> <truncated>

### Reply 1:
Note - the year/hr calc is wrong. You have 24 * 356...

### Reply 2:
Totally unnecessary. It's posted as a spreadsheet on google docs....

### Reply 3:
Great way to get a general understanding of whats proposed for the future of ASIC's

### Reply 4:
Thanks, many people seem to think I'm saying this is all set in stone lol Fixed. <truncated>

","[
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    ""hardware_name"": ""LabsBitForce 252"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""LabsBitForce 502"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""LabsBitForce 52"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""scoop64 Chip Unit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Block Eruptor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Blade Eruptor"",
    ""hardware_is_owned"": false
  }
]"
15182,"Date: 2014-06
Topic: Historical Data on GHash.io's maintenance fee?
### Original post:
Can anyone point me to historical data of ghash.io's maintenance fee? I am interested in doing some statistical analysis on the ever decreasing return from fixed rate MH/s investment vehicles. If there is a thread on this that I missed already, I would love to be directed towards it.PM info. Thanks.

",[]
13270,"Date: 2014-10
Topic: Open Source cgminer API for Node.js Developers
### Original post:
<truncated> cgminer API implementation for Node.js with multi-version support, integration tests, and a clean Promise-based API.Key Features:- Administer any device running cgminer from a Node.js program.- Supports all versions of cgminer 2.11.0 and newer.- Automatically detects cgminer version and adapts API to match- Uses standard Promise interface for handling asynchronous callbacks- cgminer response objects are automatically validated- Integration test suite is public on Travis CI: <link> All code is released under the MIT license (permissive, beerware) and hosted on Github- Github Issue Tracker is open to the public: <link> Deployable using npm<link> best way to harden and improve a tool like this is to submit it to the scrutiny of the community, so that's what I'm doing. There are some other Javascript-based cgminer APIs, but I believe that this is by far the most comprehensive, well-tested, and <truncated> and open cgminer toolkit for Node.js. If you're a developer and want to interface with your miner through Node.js, give it a try. I appreciate any feedback, good or bad. My goal is to make this toolkit as safe and reliable as possible, since I'm using it currently to build<rest of post truncated>

### Reply 1:
uuuuh! This sounds great! I was looking for something like this to rewrite my Minera project in Node. I have no excuses now Thanks

### Reply 2:
Awesome. I think we're building some similar stuff, let me know if you'd like to collaborate. Make sure to file issues if you run into them. I'm actively maintaining this project, so I'll make sure to fix them as soon as possible.

",[]
17615,"Date: 2013-05
Topic: Underclocking GPU Memory
### Original post:
Hey Everyone, I know this topic has come up in the past, So I appologize. For the record... I have read most posts and it seems it doesn't help or it's outdated.I'm currently running a Rig with two 5970's and one 5770. The 5970's are crossfired and the 5770 is just with a dummy DVI plug. I'm using GUIminer and MSI Afterburner. I'm trying to underclock the memory to 300mhz. I've read this can reduce the heat by a substantial amount. I could really use a couple degree's drop. I've tried altering the .CFG file with no success. It usually results in a freeze and then forced reboot. I'm running Windows 7 XP and i've only been able to alter the .CFG file when in SafeMode.Is there another way or program that could underclock the memory?Thanks

### Reply 1:
Use linux and cgminer w/ Catalyst 13.1, AMD APP SDK 2.7, AMD ADL 5.0 installed. That allowed me to adjust my voltages on my 5770s.

### Reply 2:
Assuming your using windows get Catalyst Conctrol Center (CCC).

","[
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    ""hardware_name"": ""5770"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GUIminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MSI Afterburner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Windows 7 XP"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Catalyst 13.1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AMD APP SDK 2.7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AMD ADL 5.0"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Catalyst Control Center (CCC)"",
    ""hardware_is_owned"": false
  }
]"
18529,"Date: 2014-01
Topic: need help 2 psu to power 1 mobo + 6x r9 280x
### Original post:
I need help on how to use 2 psu to power 1 mobo and 6x r9 280x. Currently i have 850w seasonic bronze and 1250w zalman platinum. Im planning to use the 850w to power up mobo and 2x r9 280x then the 1250w to power up 4x r9 280x gpu. No add2psu is being sold on my country and i cant buy outside since payment is through paypal and im having issues with them. Anyone here who can give me some options?

### Reply 1:
This has been discussed many times the search function is up there ^^.

### Reply 2:
Connect the green wire to any ground.

### Reply 3:
<link>

### Reply 4:
Paperclip in the green/black wires on the 24pin MB connector will turn the PSU on. Turn on the PSU running the GPUs, and then turn on the motherboard like you normally would. Very simple.

### Reply 5:
Could try thiswww.add2psu.com

","[
  {
    ""hardware_name"": ""850w seasonic bronze"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1250w zalman platinum"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mobo"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""r9 280x"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""add2psu"",
    ""hardware_is_owned"": false
  }
]"
16646,"Date: 2011-06
Topic: 5870 just dropped ~30 Mhash/s after reboot. 11.6 drivers?
### Original post:
I'm mining on Linux with latest phoenix miner. Previously overclocking to 900 MHz got me ~370 Mhash/s, but I just rebooted (for reasons unrelated to mining), overclocked again with atioc, and started mining, but now only get ~340 Mhash/s. I just upgraded to the 11.6 drivers last night, but maybe I hadn't rebooted then and so was still using the 11.5 ones.EDIT: I just saw that the ""trayer"" and ""X"" processes were using way too much CPU. Killing trayer got the 30 Mhash/s back.

","[
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""atioc"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""trayer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""X processes"",
    ""hardware_is_owned"": true
  }
]"
8925,"Date: 2015-03
Topic: Cannot access web interface with KNC Jupiter Mac \ OSX
### Original post:
Hello everyone.Well its been 5 hours now and I still cannot figure out what's wrong. I have a Nov Jupiter that powers up fine. All the fans start and stay on. But I cannot connect to the web interface via ethernet. I use a Macbook and am searching the the IP with an app called LanScan. Just to make sure of no issues I have plugged the same ethernet cord in my Avalon, and it works just find. (Mines and IP shows up on the Avalon)One thing I notice is that the green light under the red is off. (Red also off)Ethernet lights are on. (Green and orange)What I have done:-Read every thread across the internet-Tried different routers and direct connection-Updated to KnCMiner Firmware 0.99.2-E via MicroSD (Saw it installed <truncated> all Asics and powered up-Tried the reset button many times 5x5x5Looks like everything works, but I just cant find it on the network. And No Green light (under the red light) This is my only guess.I know my computer stuff. But nothing about SSH or any of that. Just cant figure it out!!Help Pleaseeee!

### Reply 1:
I had a similar issue and it turned out to be a bad ASIC board. Try booting it with only one ASIC board attached and see if it responds. If it does respond then add a second etc..

### Reply 2:
Thanks for the reply.Well I tried this already, but gave it another shot with a different asic. and sure enough the Green light finally came on (no red light either!)BUT.. Still cannot see it on the network. Soo not sure where to go from here.

### Reply 3:
Well that is a good sign. I would now try reseting it via the button with that bad ASIC unplugged. That fixed it for me when I had the same issue.

### Reply 4:
OP did you get this miner fully working now? Let me know if you need any other suggestions.

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    ""hardware_name"": ""Macbook"",
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    ""hardware_name"": ""Avalon"",
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  },
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    ""hardware_name"": ""ASIC board"",
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1808,"Date: 2013-10
Topic: [OPEN IN-STOCK SHIPPING] batch #25/26 .11 btc USB + 3.1 btc Blade miners
### Original post:
Weekend promo: Blades are at 3.1 btc. Have a good amount on hand, would like to move them into your hands

### Reply 1:
Welcome back! The setup I brought from you is working awesome!Is the price going back up on Monday? If so, what's the non promo price?

### Reply 2:
Post a pic!! I'm hoping my blade inventory doesn't last through Sunday night..

### Reply 3:
steelcave; 4; 0.44; <truncated>

### Reply 4:
packed and shipping. Thanks!!

### Reply 5:
Forgot to ask, did you use bfgminer for the proxy?

### Reply 6:
Fantastic, thank you!

### Reply 7:
Wish I had money for blade but Erupters will have to do....Molex1701; 8; .88; <truncated> like all colors you have please.Making a shipping label will get off to you shortly.

### Reply 8:
(^_^); 1; 0.11; <truncated>

### Reply 9:
I'm using the mining stratum proxy.<link> yes, I am drawing power for the fans from the green connectors. I figured the backplane power and the green power jack were the same circuit.

### Reply 10:
guytechie; 2; 6.2; <truncated> Erupter Blades, not USB miners of course, lol.

### Reply 11:
Yep, I figured as much... Building the second rig?

### Reply 12:
Cashing out by selling one, using mined BTC to buy 2. ;-). Hoping to hop along until 2nd gen ASICMINERs comes out. Or if Bitfury blades start to come out...

### Reply 13:
Selling some to recoup costs along the way is a good way to reduce overall costs and get ahead in terms of btc. I've seen many people do that successfully...

### Reply 14:
Hi my order for 19 sticks plus 1 replacement for a dud arrived today. I got the the 19 sticks but you forgot to send me a replacement for the dud. So you owe me a stick. Not to worry I am placing another order today. I would want 9 more sticks at .11 = .99 btc plus the replacement stick.Please let me know we are on the same page. and that you realize I am entitled to the replacement. I know you handle 1000's of sticks and this is only a 1 stick error. I have ordered more then 300 sticks from you and this is the first error on your part. I am sure you can fix it pretty easy . Thanks philthis was the payment for the 19 sticks<link> let me know we are on the same page here.. Thanks again.

### Reply 15:
strange... i grabbed 2 blocks of 10 from inventory and packed them up and shipped them out... but if you say so, OK...

### Reply 16:
yeah I was surprised as it was a pair of ten packs. But the gold ten pack was short 1 stick and mixed with 6 gold 3 black. I just set them up for overnight test all 19 work fine. I am going to setup an order for the 9 plus the one in about 10 minutes. Sales on ebay have slowed done quite a bit but i am still selling a few 5 packs. Thanks for fast reply phil

### Reply 17:
sounds good! i'm going to the post office in about 30 mins, so yours should head out shortly as well.

### Reply 18:
philipma1957 ;9; .99btc <truncated> .99btc for the 9 sticks and the one replacement. will send label asap.email with a label has been sent. thanks again. paid for 9 plus 1 replacement total 10 sticks.. TY

### Reply 19:
starting to get jealous..... i need more blinking green lights....

### Reply 20:
If I have bought from you before, do I need to send you a shipping label?

### Reply 21:
I'll be happy to send some your way!!

### Reply 22:
I need a shipping label per order/box. I don't think post office would let you re-use the same label a few times over. instructions are on post #2. it's pretty easy.

### Reply 23:
today's orders have shipped out.

### Reply 24:
Canary -- Any hint on what AsicMiner might have in store for us in the future? I'm looking forward to Gen 2 stuff from them, given the rise of competition powered by Bitfury, KNC's emergence, heck even this blackarrow fellow is hawking Gen 2 stuff (albeit for a 2014 delivery date).

### Reply 25:
Hey Canary, do you include the green power connector with every blade?

### Reply 26:
To that point, any word on the usb interface? When these new boards were introduced I was hearing they might have a USB connection, which obviously isn't the case. Is that going to be offered in the future?

### Reply 27:
I do, but for those using a backplane, they're not needed.

### Reply 28:
Canary, I understand I can receive a free backplane if I order 10 blades, but is there any way I can purchase a backplane with my order of 1 blade?

### Reply 29:
Hello, I emailed you about this but wanted to do a post as well. Unfortunately, I had only received 4 of my order. Canary believes he sent me 8 but only 4 could fit in box he sent with the form packaging he used. He either mistakenly shipped my order to someone or just forgot. I don't think he is trying to scam just mistaken. If anyone receives an extra four hopefully they can contact him about it. Also if he counts his inventory and finds he has an extra four then I'll change my distrust. But since he won't won't believe me, I'm going to hav<rest of thread truncated>
","[
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    ""hardware_name"": ""USB miners"",
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    ""hardware_name"": ""Erupters"",
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  },
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    ""hardware_name"": ""Erupter Blades"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASICMINERs"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Bitfury blades"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""green power connector"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""backplane"",
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8175,"Date: 2014-08
Topic: IMET’s response to AMT (Advanced Mining Technology Inc) negative allegations
### Original post:
IMET is a reputable contract manufacturing and product development company that has been in business for 14 years. Our reputation is utmost important, so we wanted to address the negative allegations presented by AMT and Josh Zipkin. IMET was contracted to build Printed Circuit Boards (PCBs) for AMT miners in February of 2014. The Printed Circuit Boards (PCBs) were built to print from various design revisions that were supplied by AMT through Bitmine. IMET did supply the parts and any part <truncated> changes were approved in advance by Bitmine and/or AMT. IMET does not buy parts from the gray market. Per our ISO-9000 requirements, we only purchase parts from approved vendors. After thorough inspection including AOI (Automatic Optical Inspection), the PCBs were delivered to AMT. Prior to delivery, IMET did verify that the individual PCBs would hash at approximately 200gh/s. The only discrepancy seen was when there were bad cores in an A1 chip. In this case, the hash rate was lower depending on the number of working cores. AMT was responsible for the mechanical designs, thermal designs (heatsinks), assembly, final test and QC. The IMET engineering team can confirm that the boards (h<rest of post truncated>

### Reply 1:
I was well aware of Joshua Zipkin writing checks he couldn't honor back in March. Sadly, you ain't the only guys. I'm going to try my best to retrieve the posts proving such, but bear in mind that Josh had me delete a many posts on the old thread prior to firing up his self-moderated thread where ALL my posts were deleted. Now, he has reverted to threatening to kill me.Josh Zipkin is a highly unstable individual, and you can take that to the bank... Oops! Apologies.

### Reply 2:
Isn't this site mirrored somewhere, might be able to check there..

### Reply 3:
<link>

### Reply 4:
And this may be the only instance when we highly appreciate that.

### Reply 5:
you guys were shady since the beginning... not being open and clear, hiding address pretending as if this was due to security and etc, escaping customers' questions, refunds, trying to reopen new threads just because your shady business was getting exposed... anyway i'm glad my intuition proved me right on fraudsters like you...

### Reply 6:
Poserko (AKA Zipkin)Did your customers have paid to IMET?You are the one who took their money. So it is your problem if IMET are going to refund you or notYou are the one who own money to folks here NOT IMET!!!!So do not make any connection to IMET and YOUR DEBTS!

### Reply 7:
Is this the real imet or some shady scam account.One can never be sure in these. They sound reasonable and the other guy does not. Dont know the whole process. In the business one can not just point ones debt to other so even if there was some mishap happening, even then imet wouldnt be responsible for other than amt. methinks this way?

### Reply 8:
Yes of course I agree. You know that me and some other folks here are responsible for amt failure right Zipkin is just responsible to collect money and to deliver crap or nothing with constant bulshit and lies

### Reply 9:
Were there any legal proceedings in regards to this?

### Reply 10:
yes. ongoing.

### Reply 11:
IMET, did you manufacture this board? The one with the burn marks?

### Reply 12:
Or the lack of copper in the board itself cause the trails to overheat. IMET chose to cut costs, we paid the price.

### Reply 13:
If that was a short and not an overheat, wouldn't a very short piece of track be totally be destroyed, rather than the longer section we see here?

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    ""hardware_name"": ""A1 chip"",
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10967,"Date: 2021-07
Topic: Avalon A1041 Review
### Original post:
Looking good. What's the sound like? I haven't been keeping up on the Avalons is this the version that doesn't require a controller?

### Reply 1:
So I take it that for folks who ordered early the A10's have started shipping?And it's running at 109F per yer sshot? Woof!

### Reply 2:
Got it hovering at a nice 118 seeing what it can handle and how it handles it.

### Reply 3:
Thanks for the report,cool to see one of these in the wild already.

### Reply 4:
""Welecom"" - noun1.an instance or manner of greeting someone. Often spelled Welcome in the non crypto space.""you will receive a warm welecom when your miner over heats""This distributor trying to send another for testing. I am thinking Taserz 24 hour mining in my basement then Taserz 24h mining outside in the heat then Taserz 24h mining in the freezer. Followed by Taserz 2.4 minutes deep cleaning with a paint brush. Followed by taserz 24 minutes write up.But I just want to buy one and get it like now

### Reply 5:
Pretty sure he means one is out of the factory / testing area and is actually in someone's hands.Measured power draw is in the OP about 2kW but it should be noted that this is due to the heat, the miner itself is right around 31TH on the pool and goes between 30-32. The miner is doing everything to stay at the target hashrate even in the extreme temperatures / power draw increase is being caused by the loss of efficiency due to the heat. *Based on the temps and power draw it is right around par with what occurred in testing except I think in their video they only went up to ~40C.

### Reply 6:
Ja though of course Kano has been seeing them on his pool for over a month as that's where Canaan does the burn-in testing. Assuming that 109-118F is chip temp gotta say I'm impressed. What's the measured power draw?Can't wait for the one I ordered a couple weeks ago to ship in July

### Reply 7:
My question is does the psu label read 12.33 volts at 150 amps?as that would be 1849.50 wattsyour watt readings were higher.2000-2200 at 125f 1900-2000 at 97fboth exceed that label unless I read it wrong and it reads 12.33 volts at 180 amps which makes a lot more sense as that would be 2215 wattsWhile we don't need 50 units I may want 10-17 units so if someothers want 10-20 usa based maybe 3-5 people could get a 50 pack.

### Reply 8:
12.35 volts and 150 amps is what the sticker says, however it supposedly can adjust in real-time between 12-14.5V and model number suggests it's rated for 2100 watts.

### Reply 9:
I think the first batch shipping is slated July, next batch available is in August. Demo's are live in the wild obviously.

### Reply 10:
okay 2100 works fine.as 14.5 x 150 = 2175 watts.so popcorn is pushing gear hard in a hot room and so far it holds up.that's cool (pun intended).

### Reply 11:
I finally got around to updating the Competitive hardware thread, and linked your review under it. Nice to see Avalons still handle the heat, my 741's were great for that on those bordereline days when I wasn't around to tweak them.

### Reply 12:
Yes sir, it still held up all weekend averaging 30.5-32th/s in +110F temps.The 97F was in an AC'd room however it had poor airflow so I think the area around the miner just warmed up.I believe this it is the PSU supplied by Avalon and I was told it auto adjusted, this is the standard miner so no turbo mode.

### Reply 13:
Looks like we're listing for August on 1041 while it's available.

### Reply 14:
hi guys I am back.we have completed our enviromental testing up to 40C, for all the modes of the miner and yes they can take the heat.More samples should be going out shortly , we had some software tweaks and wanted to test the first few thousand machines in all the modes, especially turbo.We will open up the ordering. Demand is running pretty high, and manufacturers are light on inventory so first come first serve<link>

### Reply 15:
Do you remember the humidity level in your tests?

### Reply 16:
Bottom line. It is selling out pretty quickly so that now most large customers are pre purchasing Sept/Oct.capacity at the fabs ( TSMC and Samsung) is pretty tight which means NO ONE will be able to build a huge wack of machines ( unlike Q1 and Q2 of 2018 )With Upstream supply tight and BTC mooning even old shitty stuff is flying out the door. We just started selling 850! which is basically 851 that didnt met the spec. Moving like crazy.it looks to me like we will have a repeat of end of 2017 when demand was 10X the supply. If BTC holds or goes higher then you can expect shortages.life in bitcoin, never dull.I will try to reserve some quantity for smaller customers and put some aside for Nick at blokforge. he stuck with bitcoin and us through thick and thin.

### Reply 17:
Ja, it's pretty crazy right now. Glad I ordered my A10 through Blokforge in time for the early July delivery. Speaking of which, any better info on when the early July batch will be shipping?

### Reply <rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon A1041"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""741"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""850"",
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]"
823,"Date: 2013-07
Topic: [GB] KNCminer Jupiter  #16 Sold [Added to 6.4 TH/s Jupiter Pool] 11/30 left
### Original post:
11 shares lefted? right? Larry.

### Reply 1:
1 share in this group 2.6 BTC <link>

### Reply 2:
Confirmed and added to spreadsheet and OPThank you

","[
  {
    ""hardware_name"": ""KNCminer Jupiter"",
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]"
14169,"Date: 2011-06
Topic: Mining on external computer?
### Original post:
Hi,I'm currently wondering if the following is possible:I have 2 computers A and B.Can I run a mining program on computer A and tell it to do the calculations on computer B?I.e. running a mining program on computer B without installing it.Edit: If it is possible, would it even work if computer A runs with Windows and B with a Unix distribution?Thanks in advance!Best regards,X.C.

### Reply 1:
No and no is pretty much the answer.

### Reply 2:
Remote desktop.But it wont obv. work if the program doesn't exist on the other machine.

### Reply 3:
Kind of and sort-of-ish.You can certainly install (for most miners - this is just copying the .exe) on computer A.You can then run that program from computer B using Windows file sharing or Linux file sharing <truncated> Computer <truncated> --<my args go here>For all intents and purposes, poclbm.exe is ""installed"" on computer A but being run from computer B. poclbm.exe is not the best example here, though - it has quite a few supporting files that are required. This method will probably not work with poclbm, but will work with ufasoft's miner or something similar.For poclbm, you would need to map a network drive on computer B like this:net use Z: <truncated> <my args here>

","[
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    ""hardware_name"": ""computer A"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""computer B"",
    ""hardware_is_owned"": true
  }
]"
9322,"Date: 2015-09
Topic: Uses for an old block eruptor?
### Original post:
So I have a load of old 333mh/s block eruptors, using some on the lottery, but the question is...What the tits do I do with 10 333mh/s block eruptors....

### Reply 1:
Sell them and buy Sidehack's USB miners to lotto mine<link>

### Reply 2:
List them on eBay as collectors gear. More for owning it and displaying it.Then use the money to buy side hack usb sticks

### Reply 3:
And if you can't manage to sell them, they should make good ""conversation piece"" paperweights.

### Reply 4:
Heating devices, they works extremely well if you pair them with some quiet fans. Someone even install them in the central heating chamber to send warm air into the whole house

### Reply 5:
I was going to make one into a necklace but can't bring myself to drilling into it. But yes, put them on Ebay someone will buy them.

### Reply 6:
I would agree with selling. They have a surprising amount of value still. Also people seem to collect the entire color selection. So if you can sell an entire set depending on your colors value might go up.

### Reply 7:
You don't have a ""load"". I have 70. That's a load.And guess what? You can't do anything productive with them. They are worthless. The ""lottery"" is a waste of USB slots.

### Reply 8:
That's just great! If you live near the Arctic Circle. It's August... Summer for 90% of the people on earth.

### Reply 9:
Y u so salty bruh... I put my s5 in my vents when it was -3 celsius and my house legit warmed up 2 celsius

### Reply 10:
And what happens when you do that in August?Put your miners in your vents during the winter! But now, it's not very productive. Right? Just sayin'.

### Reply 11:
Anyone had good luck recently with these lotto devices?

### Reply 12:
If you see my signature, that's what i've been doing with my dead ones.

### Reply 13:
Why drill? There's already two holes going through the heat spreaders and the boards, one conveniently near a corner.

### Reply 14:
I have seen them on eBay using the heat sink as a key ring.

","[
  {
    ""hardware_name"": ""333mh/s block eruptors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sidehack's USB miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""side hack usb sticks"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s5"",
    ""hardware_is_owned"": true
  }
]"
5249,"Date: 2013-06
Topic: Does Asicminer have plans for a more powerful block erupter USB?
### Original post:
The idea of these things is really great. I travel a lot and being able to have one plugged into my laptop would be a great conversation starter about bitcoin and would be something easy to get others interested in it by showing how they can participate with just a tiny little device plugged into a computer. It's just that it would be so much more appealing for the price if it were closer to 1 Gh. Though I am guessing the power draw and heat dissipation needs would be more difficult to manage.

### Reply 1:
Yes, its called a blade xD:<link>

### Reply 2:
I have a feeling that using a blade while sitting in starbucks is not what I am looking for.

### Reply 3:
I think it's safe to say ASICMINER has a lot of stuff in development They've proven to be the most reliable asic organization by a long shot and they always seem to have the next 2 or 3 steps ahead well plotted out. I'd be really surprised if there was not a USB miner eruptor update from them coming in the future.

### Reply 4:
Hahahahahahah hilarious, imagine a power supply sticking out of the outlet in Starbucks

### Reply 5:
Speak for yourself. I plan to mount my 250GH Jupiter on a hand truck and shove it into the nearest coffee shop with free electricity.Are you sure you're in the right place? ""What do you mean I can't use a 240 Volt plug?! I demand to speak with the manager!""

","[
  {
    ""hardware_name"": ""block erupter USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""blade"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB miner eruptor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""250GH Jupiter"",
    ""hardware_is_owned"": true
  }
]"
1925,"Date: 2013-10
Topic: [GB]Terraminer IV, 1.5BTC=67GH/s 23/30 shares
### Original post:
One share pleaseNet amount: -1.50 BTCTransaction ID: <truncated>

### Reply 1:
Welcome to the group, added to OP and spreadsheetPlease send email and Skype userCheers

","[
  {
    ""hardware_name"": ""Terraminer IV"",
    ""hardware_is_owned"": true
  }
]"
22953,"Date: 2019-05
Topic: Antminer S9j no hasrate
### Original post:
I have a new Antminer S9J and this mining, this hasrate is 0 and temp 15 on the three hash-board please Help meCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel command line: noinitrd mem=496M <trun<rest of post truncated>

### Reply 1:
Can you try to follow my procedure here Step by step troubleshooting guideAlso, sometimes cleaning the hashboard may solve this issue. Check the PSU it looks like your PSU not giving enough power.

","[
  {
    ""hardware_name"": ""Antminer S9J"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash-board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  }
]"
15358,"Date: 2014-10
Topic: Help and advice
### Original post:
I have found that my ISP has complete server time outs, I found this occuring at least every 1 to 3 minutes and sometimes the time outs last 3 to 15 minutes. The misers look as if they are mining all the lights doing what they normally do.If I do traceroutes and see * * * Timed out this is cutting me off the internet completely how drastically will this effect my mining potential. I also have done a few pathpings resulting in 44% to 100% lost packets at times thruout the day. This does effect my mining does it not?Let me also add I am using my ISP's servers and websites as my paths I am pinging Also in the picture provided you can see I had to run 3 trace routed before one would even connect to anything in their network what is the least amount of bandwidth we shoudl be using for a mine of 5000 Thash SHA and 50 Mhash of script on the same networkAlso what router specks should I use ( not name brand but Specks some brands are not available to me in this country unless I order from overseas)I am moving to a new city because of this. (I live in the Philippines) things here SUCk haha its like they took a bunch of technology and dropped it on a civilization in 1820.

","[
  {
    ""hardware_name"": ""ISP's servers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  }
]"
9736,"Date: 2016-03
Topic: Why do some S3's overclock and some dont?
### Original post:
Hi guys,Just a curiousity question really. I have an S3 and an S3+ and the S3+ is overclocked to 250freq and has been since I got it. Runs fine only gets the occasional error on one chip every two weeks which a reboot sorts out. The S3 on the other hand wont take even the next freq up without throwing chips left right a centre or not powering a whole board.Now to my question, why are they behaving differently? I know they are made at different times, and are technically different models, but has anyone tracked down or does anyone know why they behave so differently to <truncated>

### Reply 1:
the + are better.batch 1 and batch 2 were bad models they ran at freq 218 and freq 212. the did not do well

### Reply 2:
Not all S3+ are better. I have one that I use in my rig in my shed in the backyard, and it overclocks worse than my s3 that easily does 520gh/s with no x's. I used a 5000rpm pwm as well, so temps aren't that bad. Some batches are just bad and you'll need to try to avoid them if you're buying old miners.

### Reply 3:
Batch 1 was bad enough everyone got partial refund. Some ran up to spec but a lot did not. To avoid this phil is right buy a + model and you should not have to worry about the really bad ones.But S3's had a personality it seemed to me. I always had some better then others and fined tuned each one. But get a + if at alll an option over normal.

### Reply 4:
I had 40-50 s-3's pass through my hands the majority were s+ and most did freq 237 easy some did freq 243 and some did freq 250.Some of the best mining gear ever made. although avalon 4's were the best. for my setup then s-3+'snow I like avalon6 more then s-7

### Reply 5:
Thanks for the replies guys. I'm not looking to buy anymore but if I were I'd keep a look out for a + model and swap out my old normal one with wifi instead.I'm along the same thinking about the personality side of things. Each one is different. But it still doesn't explain why though? Was it down to components used? Programming? Cheers.

### Reply 6:
components and component qualityin mining with gpu'sin intel cpus some clock great some don'twhen chips are made they are not equal.sometimes in gaming gpus you will read that the chips where binned.Simply put tested and sorted by quality.I think the s-3+ varied due to chip quality.There are rare s-3++ machines that where most likely made with binned high quality asics. These were sold mostly in asia.

### Reply 7:
That's fair enough. I was thinking if it was some kind of programming that it could be altered. Never mind. Thanks for the replies

","[
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S3+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5000rpm pwm"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S-7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S-3++"",
    ""hardware_is_owned"": false
  }
]"
13580,"Date: 2018-06
Topic: [NEWS] Antminer S9 CUSTOM FIRMWARE! [Release date: 01-07-2018 ll 12:00 +1GMT]
### Original post:
The mining software will be released @ 02-07-2018 ll 12:00 +1GMT

",[]
5444,"Date: 2013-06
Topic: stratum-proxy +asicminer
### Original post:
Hi I need help with stratum-proxy and asicminer blade

### Reply 1:
search forum for a tutorial by dogie

### Reply 2:
ok give me link

### Reply 3:
<link>

### Reply 4:
use search option ?

### Reply 5:
Hi Someone knows if the mining_proxy could be installed into MinePeon on Raspberry PI?Thanks

### Reply 6:
It runs fine on raspi debian wheezey (just follow the installation instructions exactly), why not ask on <link> as the support is very good.

### Reply 7:
Hi, it doesn't run on the arch linux OS used by MinePeon, which is quite a shame. It will run flawlessy Raspian wheezy and Pidora.

### Reply 8:
my blade works fine with stratum proxy.What is the matter with you?Tell us more details.Where are u located? If you are in China, I will help u free of charge.

","[
  {
    ""hardware_name"": ""asicminer blade"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry PI"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""raspi debian wheezey"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""arch linux OS"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Raspian wheezy"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Pidora"",
    ""hardware_is_owned"": false
  }
]"
2937,"Date: 2014-02
Topic: 5-Chip Gridseed Miners (Group Buy) (CLOSED)
### Original post:
I will like to know if any of you guys are interested in buying 5-chip dual LTC & BTC miners.<link> only accept bank payment which is why I want to separate the price so I won't get scammed by a lot if in fact they do, but user ""asicbtc"" told me they are legit so we shouldn't have any problems( I just want to be carefull) .I have someone that can ship them worldwide from China via DHL. Escrow isn't an option as we all run the risk of getting scammed. If any of you guys are interested, PM me or leave a comment below.P.S: If someone has already bought from them via bank, PM me, or leave a comment.Update: They told me they won't accept foreign payment because ""the price may change everyday""... So till I found something else, I need to cancel this till further notice.

","[
  {
    ""hardware_name"": ""5-chip dual LTC & BTC miners"",
    ""hardware_is_owned"": false
  }
]"
21961,"Date: 2017-12
Topic: Are there any guides on building a mining farm from scratch?
### Original post:
Is it still the wild west when it comes to information on starting a mining farm or is there a formula out there already to do things practically and efficiently?I am curious about things such as obtaining and distributing the power, buying vs leasing commercial property, buying lot vs existing building, most efficient cooling method, layout, etc. Any links to some good guides would be appreciated. Also, if I was to buy a small plot of land and put a shed/container on it, would it be pretty simple to have the power company provide a couple thousand amps or whatever I needed, perhaps I'd buy the transformer or would they want to see construction plans / have a solid structure in place? Basically would they just feed the line wherever I tell them to and then have me deal with an electrician to get the panel installed in the shed?

### Reply 1:
unfortunately I don't know any guide fpr a mining farm but you might refer to high performance compunting datacenter guidlines and whitepapers.there are many variations of ready to use and pre built modular <truncated> from suppliers like dell/emerson with different cooling solutions depending on your environmental setup and region.you might look for a small property near to a tranformer substation so you don't have to pay to much development costs.

### Reply 2:
There are people with this knowledge, but most of us dont give it away for free when we can get paid $150/hour or more to consult on these exact questions.

### Reply 3:
As far as physical design, it's basically setting up a data center and you can learn a lot online about data center construction and design.Other than that, I'd expect you could handle the networking aspects but if not that's another topic to research.But OTOH, look at some of the colo ads - you'll see barns, outbuildings, wire racks in warehouses, reused grain elevators and some nonsense like that. The bottom line seems to be cheap power and a good feed from the utility.

","[
  {
    ""hardware_name"": ""transformer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""panel"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""modular from suppliers like dell/emerson"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wire racks"",
    ""hardware_is_owned"": false
  }
]"
21700,"Date: 2017-10
Topic: Hardware ver. x.x.x.x
### Original post:
Hi All,Ok, this is strange....but bear with me. I all of a sudden, have both my miners (S-5's) just show....within 3 hours of each other, Hardware Ver. x.x.x.x on the main status page, and no cg miner version at all.All mining has <truncated> did a search, and all I could really find was a suggestion to do a hard reset of the power, which didn't work.So far, what I've tried (that's all <truncated> off and back onhard reset back to defaultreflash of firmwareNow....what is REALLY weird is that this affected one of the machines first, and after I accepted that this one is dead.....the other one did the exact same thing. How, do two machines that have been running all winter, one inside, one outside in the garage (both blown free of dust weekly), decide to show the same error and die within a few hours of each other?I refuse to accept it's just bad luck. There must be something going on.The ONLY thing that has changed today is I installed a new router in the house. An Asus RT-AC3200. How could a router kill two Antminer S-5's? I don't think it did...but troubleshooting 101.....what changed right before the incident?Any help / guidance would be appreciated.Thanks!

### Reply 1:
I know this post is a few months old, so I'm sorry for resurrecting it.When I do a search only 2 threads come up, this one and another one. There is no resolution to either poster's problemI am having the same issue with my minersI WAS running an S5, 2 S7-LN's, and an S7In late march/ early April they ALL stopped hashing.The overview page shows ""Hardware Version x.x.x.x""The miner status page is completely blank no info there at all. Chip status, fan speed, pools, all blank.Bitmain Support lists this exact issue on their website under item number 7 I believe and says that the miner has lost its firmware, reload and reboot.Well its not that simple, and it didnt workI have also replaced the BB board, and control board, and imaged several different microSD cards, all with no change in the miner at all. I have even booted them with the hash boards disconnected to try to eliminate them from the equation, with no luck either.I have been communicating with bitmain support which has been helpful, but unproductive.Has anyone else had this issue?Was there ever any resolution?I have already lost 3 months of mining, I would like to get this figured out if anyone can help me trouble shoot please<rest of post truncated>

### Reply 2:
Ok, so I figured it out yesterday. I will post my findings here. Searches on Google bring up this issue on this forum, and several other sites. There is no resolution ever posted. I stumbled across a Russian forum that google stumbled through translating. That person was having the same issue with one of his miners. He moved it to another location for troubleshooting and it worked fine. The only thing that changed according to him was the network. I do not know what network connection has to do with the BB board properly loading firmware and recognizing the connected hash boards but apparently it does. I checked my router, I use an ASUS RT-AC68U, saw there was another firmware update, so I updated. After the update I was checking through some other settings. The log showed the ""AiProtect"" app was blocking malicious activity and sending alert emails. I received no emails of the sort, so that may be another issue. The ip addresses it was blocking were all for my miners. I turned off all settings for the AiProtect app built in to the ASUS router and BAM! green status lights and we're off to the races.So switching off that protection as ASUS calls it and the hardware version on the min<rest of post truncated>

### Reply 3:
Good to know for future reference, thanks!I'd have to assume that during boot, anytime the miners cannot connect to a pool (in this case blocked by the router) it cannot perform its self-checks and that is why the boot process hangs giving that generic error message.

### Reply 4:
I thought I had checked that....but I was thinking about it again after bitcoin hit 6K and decided to take another look.....I'm glad I did.I changed out routers and I'm BACK BABY!!!!!!Thanks for catching what I should have.....

","[
  {
    ""hardware_name"": ""S-5 miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Asus RT-AC3200 router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7-LN miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7 miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BB board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""microSD cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASUS RT-AC68U router"",
    ""hardware_is_owned"": true
  }
]"
5846,"Date: 2013-07
Topic: Hosting BFL miners at J Morgan & Associates?
### Original post:
Make sure you do your due diligence prior to signing on the dotted line. Make sure you know exactly who you're conducting business with.A quick reminder: <link> June 14, 2006: <link> those not aware, Community Hosting is a company that Josh of BFL owns. The address for the Bryant Building is 1102 GRAND, KC, virtually across the street from where BFL first used as their office/mailing address.Another data center located even closer is 1100 S Walnut, KC. I'll explain the significance of that address in a sec, but first here's the map showing its location in relationship to 25 E 12th St., KC, BFL's address still used on BitPay's site.Note the 1102 Grand address in the image above, better showcased below:The Zaina restaurant could be seen from the 1100 S Walnut St. address.It's common knowledge that these addresses are related: <link> you can see, the relationship between Josh, Aaron and Joe stem over seven years.Josh has been hosting FPGAs at at least one of the above addresses for over a year. Do you really believe he's going to give up such a lucrative endeavor to J. Morgan and Associates, or is it more likely that Josh, Aaron and Joe make up said endeavor?

### Reply 1:
shit just got real

### Reply 2:
<link> is part of the Hosting Provider.<link> phone number used for kcmocolo.com is the same one used for Joe's dad, Kevin, when he ran for polical office: <link>

### Reply 3:
I'm just gettin' warmed up!

### Reply 4:
Read it all, still not sure what you are claiming though. tldr?

### Reply 5:
tldr; found a bunch of names and addresses while using Google.

### Reply 6:
She's a witch! Burn her! Err...him! What?

### Reply 7:
I've signed up at kcmocolo/J. Morgan for hosting some Single SC's, though they haven't been delivered there, yet.It looks like they're affiliated with Joe's Data Center <truncated> I heard about Joe's DC years ago, and they seem to have a good reputation.As for Josh hosting out of that data center, I think it makes sense he would choose a local data center given the choice.Whether Josh is involved with this new J. Morgan & Associates hosting service or not, I don't know. If he is, that would be a plus.

### Reply 8:
Josh is already hosting at one of the mentioned data center of which he owns. Three of the data center addresses mention on the KCIX site are literally within walking distance from each other. It would take less than ten minutes to walk from any one of them to the other two and BFL's original address, physically touching all four buildings.The only thing that I haven't figured out YET is how BFL is able to collect the mail addressed to 25 E. 12th St. without a suite number.

### Reply 9:
Can you research my dentist next? I woke up after root canal with a sore ass. Somethings gotta be up.

### Reply 10:
I hate when that happens...

### Reply 11:
Maybe mail just goes to building? Sorted there.

### Reply 12:
I have a hosting facility available for anyone who may want hosting and at a different site. PM me for details or see my signature.

### Reply 13:
Sounds like fishy business along with the rest of the LabRat stuff.

### Reply 14:
Josh even stated in no uncertain terms that if you have reservations about hosting on his Eclipse MC pool, he'll be happy to create another pool for you to do such. It's akin to either hosting the physical units at his data center, or another of which he has a direct relationship with its proprietors.How happy is BFL with such a setup?<link>

### Reply 15:
Hello,I wanted to clarify some things that are being said or at least insinuated here. My name is Joe Morgan I own and operate both Joe's Datacenter, LLC and J Morgan & Associates, LLC (aka kcmocolo.com). They are separate companies with separate facilities but I use one address for mailing. I am the SOLE owner of both company's and have no affiliation with Butterfly Labs other than they are sending their customers to us for hosting as they decided not to do it themselves. I cannot speak for BFL or Josh as to where he has hosted in the past but I will say that almost anything hosted in Kansas City is going to be in one of three or four buildings downtown all within a couple blocks of eachother. You could find hundreds of hosting companies that show one of those buildings as their address or as a place they host and they are still completely different companies. Josh has never been an employee or part owner of any of my companies and is not on the payroll. Aaron owns another datacenter in Kansas City and we have both had facilities in the same buildings but otherwise we are unaffiliated as well. KCIX that was mentioned is a peering exchange which the entire point of peering exchange<rest of post truncated>

### Reply 16:
I have my rigs hosted by Joe Morgan and I am very happy with his service

### Reply 17:
Darn it, Joe - there you go. Destroying a perfectly entertaining borderline paranoid delusional rant, by mea<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Single SC's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""FPGAs""
  }
]"
22137,"Date: 2017-12
Topic: Firmware question
### Original post:
I'm wondering which firmware to use for s9 14Th. The statement on bitmain says ""Support S9 miners except S9-11.85T12.93T14T with fixed frequency."" The miner in question is Dec batch. One hashing board not working. Just figured I'd try to flash to see if that works before sending back.I'm not clear if frequency is fixed or not.

","[
  {
    ""hardware_name"": ""S9 14Th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9-11.85T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9-12.93T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9-14T"",
    ""hardware_is_owned"": false
  }
]"
10537,"Date: 2017-09
Topic: Review of Canaan support, warranty, controller, and A741
### Original post:
How noisy is the A741 compared to the S9?

### Reply 1:
What is your ambient temperature?You can use -2 voltage and with 28C intake it will run similar to a 290X reference model at 70% fan, if not less.Under that temp, it really becomes silent.You can probably force the fan setting, and also replace it with something more silent, but I have no need for low noise.I have it hosted so I'm honestly not too good at this, but just checked and 290X at 70% is best I can do.I could sleep with one in a bedroom, but not 9, though I think heat at that point would be the issue haha.

### Reply 2:
The s9 is say 75db vs the 741 is 72 dbBut the s9 has nasty pitch .And some times a fucking whistle sound that is really bad. I suspect it is due to the heatsinks used inside.Many are offset .The s9 is pretty much a pos compared to the Avalon 741.But if you get a good one that does not break they are better.Of the 11 I have had .four have not had any issues in a year. The other 7 needed repairs.

### Reply 3:
Wow,7 out of 11 had problems ?? Kinda like my odds at the Casino Glad I'm not an ASIC whore anymore,my vid cards rock & with a 3 year warranty,even a free ship label sent to me

### Reply 4:
I have 10000 sols of Zec and 60th of btcThe Zec earns about 80 usd a day and uses 3333 watts.The btc earns about. 50 usd a day ands uses 7000 watts

### Reply 5:
I still stick with Bitcoin, although I have put a few Radeon cards in my PC for mining when i'm not using it. I still enjoy ASIC mining but I fear it's slowly coming to an end for us home miners and the big corporations and farms will centralize the entire mining business (As we can already see with Bitmain and Avalon distributing the only 'effective' ASICs now).

### Reply 6:
You just realizing this now?? LMAO!!!!!!!!!!!! For the last year or so the diff rise has been a killer,the price rise has helped but not for much longer,unless we're talkin $10,000 BTC by end year Centralization has been upon BTC & will not let up,enjoy your expensive broke prone ASIC miners LMAO!!!!!!!!!!!

### Reply 7:
That is part of what I like about Canaan, so far they have proven themselves to be easier to deal with than Asus, Gigabyte, and Sapphire (All 3 GPU cards died even before mining, only 2 RMAs were passed and it was months of work).I highly support GPU mining as well, looking into buying something well made and for GPU mining in a more elegant fashion than a rack of GPU raisers dangling and caseless motherboards.Canaan took me about 5 minutes of work and not a satoshi out of my wallet.Is this sustainable? I hope so, because I plan on sticking with them with this customer satisfaction.A741 on 6.5cent electric is pretty nice, especially on a pool paying out transaction fees.My failure rates with the S9 were about as bad as Philipma, and I know they take good care of their miners with lots of experience.That's not good for clearing 100% ROI.Out of 10 Canaan miners, 1 failure, (and before Bitmain has even responded to my delay PSU shipment which is another story), the replacement was shipped by Canaan.I'll be out a PSU for them crazy enough, wasn't expecting it to be so fast.Will power down a bad S7 for it.Someone else may be better about sound mods, I know it could be better than an S7 <rest of post truncated>

### Reply 8:
Agree with all except:Speaking as a person who designs/builds high power electronics for a living, *why* do folks constantly seem to think they can make a better decision about cooling/fans than the OEM did?Canaan did even more research into that than Bitmain (who just went for brute force) did. Read the bit on Canaan's site about it then look at the innards of your 721/741 miner to find out how they reduced the noise.That said, as with Bitmains s7 on up and applying equally to the Avalon's, IF you are going to play with fans at least make sure they are rated to work against high static-pressure. Most lower noise ones are not and will not deliver enough or at best will deliver only barely enough airflow even with a miner throttled down. In short - expect marginal performance....

### Reply 9:
I've known this for a long time if you track my posts (who would?). I'm still profitable as my electrical cost is right around six cents per kilowatt and I probably will be for a long time. POW change is an option but with centralization Jihan will make some chess pieces move and block that out. My mining rigs haven't broken down yet and I still actively buy miners and use them, GPUs also have risk involved, albeit much less.

### Reply 10:
I agree they designed these things by default perfect for my setup and anyone who can tolerate expected fan noise.As stated I have no need for silent operations so don't have any first hand experience, but I do see people constantly <truncated> units, some for a living, for home mining and basically costing performance in exchange for lower fan noise, at<rest of thread truncated>
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    ""hardware_name"": ""S9"",
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    ""hardware_name"": ""290X"",
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    ""hardware_name"": ""Radeon cards"",
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    ""hardware_name"": ""ASIC miners"",
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    ""hardware_name"": ""GPU cards"",
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    ""hardware_name"": ""Canaan miners"",
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    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""721/741 miner"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""mining rigs"",
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23447,"Date: 2021-02
Topic: question about s17/s19 hashboard configuration/operation
### Original post:
so, this might sound weird, but allow me to explain a bit first, I cram miners in where ever I can, at the office, in the shed, even paid hosting, so I look for different solutions to my issues.so at my home/office, I want small power (wattage) BTC units, so what I have done is acquired s9's, and unplugged 2 of the hashboards, so it runs on one, then I can turn the fans down so it runs at around 400w, and I get winter heating, so all is good, so I need an upgrade, but how many hash boards are in the s17/s19 units, and can it operate with only one hashboard in it? how much hashing power is in one PCB? and roughly what would be the power draw of said board?I was looking for under hashing units, as they come cheaply sometimes here, and wondered if they will fit the bill for next years winter.any info on this would be good, everyone is talking about getting the best from these units, I actually need the worst from them lol.thanks.

### Reply 1:
All the S17 series (normal, pro, +, and E) have 3 hashboards and they will operate with fewer if you unplug the data cable for hashboards you want to disable. S19 should be the same although I haven't actually seen one yet.For a plain S17, 1 hashboard does 16 to 19 TH at around 45W/TH, so 720W to 855W per hashboard.Not likely to find any at reasonable prices though. And be warned that the 17 series had a lot of quality control issues so high failure rate.

### Reply 2:
If you do this, you'll want to block the airflow around the board. The heatsinks rely on high flow to keep chips cool so if your air is going around the board instead of being forced through the fins it'll overcook.You should look into braiins or vnish firmwares that allow you to adjust the voltage and frequency of the S9. You could get a unit down around 400W and quiet but still operating well upwards of 5TH. Better than one board at stock speed.

### Reply 3:
thanks guys, good info there wndsnb, and yes sidehack, that's pretty much what I have running now, its not that good, around 4.2TH for just over 400w, I cant balance the voltage and frequency for a stable rig.I will still keep an eye out for a newer system tho, maybe a s15, and mod that, still twice as efficient as a s9.

### Reply 4:
If what you've done is, as you've said, unplug two boards and run on one, then no what I suggested is not what you're doing.

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4933,"Date: 2013-05
Topic: [Ann]Purchase Batch 2 ASIC now: 226 available, batch 3 starting shortly
### Original post:
Sent 4.3BTC for 50 batch 2 chips.Email coming shortly

### Reply 1:
Just sent 1.548 BTC for 18 chips through virwox. Waiting email confirmation though

### Reply 2:
Sent another 1.376BTC for another 16 chips.So total 80 chips for me.

### Reply 3:
to my calculation there is 142 chips lefti am purchasing 90sent 7.74 to the address for batch 2 - email soon.

### Reply 4:
purchasing another 100.86 sent

### Reply 5:
In for the last 10 chips in this batch.

### Reply 6:
I'm in for 32...just waiting on confirmation 2.752 btctxid: <truncated> and related info on its waywill double this order if there's room in batch 2

### Reply 7:
is there any chip left for batch 2?

### Reply 8:
Should still be profitable at that point though.

### Reply 9:
Hardly the easy money or get rich quick that people think it will be though.There is even the possibility that you won't even break even within 1-2 years - all depends on shadow players

","[
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    ""hardware_name"": ""16 chips"",
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    ""hardware_name"": ""80 chips"",
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    ""hardware_name"": ""90 chips"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""100.86 chips"",
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  },
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    ""hardware_name"": ""10 chips"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""32 chips"",
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22301,"Date: 2018-01
Topic: S9 miner with low hash rate question/help
### Original post:
What about kernel logs? I guess the only option might be to contact Bitmain support or where you bought it. Is it still on the warranty?

### Reply 1:
6 days out of warranty :/Here is the kernel log when I have the FAR LEFT powered and the FAR RIGHT. If anyone has a better way to post kernel logs I would love to know, this seems huge.edited: had to cut out some stuff that was just repeating because of post character limits.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0<rest of post truncated>

### Reply 2:
Here is the log from when the MIDDLE and the FAR RIGHT are powered.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 25<rest of post truncated>

### Reply 3:
Hello! Ive been running a S9 miner and had no issues with it until last night.Everything was fine until yesterday. I was averaging 13.6 Th and then it went down to 500 Gh over night. I tried resetting and that didn't work. I tried updating the firmware and that didn't workI then started checking each hashboard. I have found that when I power up two boards it gives me 10.1 Th but when I do all 3 it only gives me 500 Gh.If you have the S9 antminer sitting on a table with the ethernet port facing you the board on the FAR LEFT seems to be the problem. Here are my results of testing.When powering the MIDDLE board only I get 5.1 Th and the temperature reads correctlyWhen powering the FAR RIGHT board only I get 5.1 Th and the temperature reads correctlyWhen powering the MIDDLE and FAR RIGHT board I get 10 Th. and the temperature reads correctlyWhen ONLY powering the FAR LEFT board I get 1.1Th and the temperature DOES NOT READ CORRECTLYWhen powering ANY COMBINATION WITH the FAR LEFT board INCLUDED I only get 500 gh and the temperature DOES NOT READ AT ALLWhen powering ALL THREE I get 500 Gh and the temperature DOES NOT READ AT ALLI have tried all the different combinations of power connect<rest of post truncated>

### Reply 4:
Looks like a dead board to me. I had the same problem with a couple of R4's. After trying several things, I just sent it in for repairs.

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21597,"Date: 2017-09
Topic: Problems with an old HashFast Baby Jet setup
### Original post:
Hi, i have a HASHFast Golden Nonce 768 GH/sec 28nm ASIC, it should be able to do 768 double SHA256 per clock cycle. The setup has a raspberry p1 as a controller with minepeon. It stopped performing suddenly, like two years ago. The owner wants to use it, because he doesnt have to pay for consumption.It used to run fine with only a --hfa-hash-clock 678 even 720 setting. Now it only works without errors with a value lower than -hfa-hash-clock 330Tried it with the old MinePeon that it had, Version 0.2.4.3hf8 with cgminer3.9.0h2. Also tried the latest minepeon img it has the same problem, but on lower hash clock around 250.So the hashfast restarts every 2 minutes and has ~40 Gh/s. Marked the restart event with <truncated> ~]$ <truncated> -c <truncated> --hfa-hash-clock 678cgminer version 3.9.0h2 - Started: [2017-09-21 <truncated> (avg):29.34Gh/s | A:9344 R:0 HW:308 WU:348.6/mST: 2 SS: 0 NB: 3 LW: 9852 GF: 0 RF: 0Connected to <truncated> diff 128 with stratum as user <truncated> 5911a918... Diff:1.1T Started: [11:22:15] Best share: <truncated> management [S]ettings [D]isplay options [Q]uitHFA 10: 52C/.83V 70C/.83V 56C/.84V 49C/.84V 13.55G/64.74Gh/s | A: 768 R:0 HW: 13 WU: <truncated> 11<rest of post truncated>

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16173,"Date: 2021-12
Topic: new electric setup: 1-phase vs 3-phase
### Original post:
This question has been asked a couple times with variations and I haven't quite got an answer so I'm posting this here.I found a small shop to use for mining, aiming for about 150kw total 24/7 power draw. I'm discussing with TDU and electrician about setup but neither of them are very helpful in giving advice for what I need. Their attitude is mostly just like ""just tell us what you need and we'll do it"". The shop has a small 1 phase 200 amp panel, but they are willing to make the upgrades.From my research, it seems the question of 3-phase vs 1-phase delivery just comes down to cost. All mining hardware uses 1 phase but still many people seem to recommend to go with 3 phase because of reduced delivery costs. I'm not 100% sure the reason for this, so that is part of my question. Secondly, I might be able to take the panel and any other electrical equipment from the shop with me to later expand, so if 3 phase isn't strictly neccesary, maybe it is a good investment anyways?Anyway my main question here is, should I give the TDU a load sheet requesting 3-phase power or just 1-phase? Any advice on this is appreciated because I am really unsure.Thanks.

### Reply 1:
Why would anyone recommend 3 phase over a single phase for mining? it really makes no difference, since you are going to be using nothing but PSUs that need only a single phase.Remember that by the end of the day you will be using 3*single phase which is just like running 3 separate single-phase wires, what you should focus on are only the total allowance and the cost.You tell your electric guy that you need for example 100kw at 220v in the cheapest form possible, I don't know about the cost in your country but I'd say a single-phase set-up would be cheaper.I have 3 phase but only because I really don't have any other option, the nearest supply I have is 3 phase 11KV, so I have an 11KV to 380V (3 phase) transformer (the only type of transformers available here), it does come in handy sometimes, for example, I was able to get some 3 phase exhaust fans ( certainly a lot more robust than a single-phase fans) but I then have to worry about load balancing and shit, so with everything else equal, a single-phase will be it for me.

### Reply 2:
150kw is getting into 3-phase territory but still very practical for single phase service. It comes down to cost of the panel (size and amount of copper in it) and if the power company needs to supply you with a different service transformer to feed the building. As Mikey said, go with what is cheaper.

### Reply 3:
Is drawing 150kw on a single phase an issue for the TDU since it is extremely unbalanced on the transmission lines, right?

### Reply 4:
I assume that ""TDU"" is your utility supplying power to the building?If so, yes and no. Yes it is a load on only 1-phase of their (usually 3-phase) transmission lines BUT it is their job to monitor the lines and divvy up the loads on them between you and other customers so no it should not really be an issue for them.If you are in North America, depending on what kind of power is needed for other businesses nearby, their '3-phase' may not exactly true 3-phase but rather 3-phase created by using a 'wild leg' as referenced to Neutral. Voltage across all 3 or any 2 lines is the same. Voltage from either L1 or L2 referenced to Neutral is balanced to 1/2 the L1-L2 voltage. For 208 VAC that is 110V for L1 or L2 to Neutral. Voltage on the 3rd or Wild leg referenced to Neutral is much because it is is NOT reference to Neutral. The 3rd leg is supplied only to places needing 3-phase to run motors, refrigeration, and other application requiring it that are powered by all three phases. If that is the case the utility is already supplying single phase power over very heavy lines feeding several other locations nearby.Would they prefer a load split across all 3-phases? Sure, but it should make no<rest of post truncated>

### Reply 5:
Are you just saying that the TDU should be able to balance things on their side easier than I make it seem?Also, you're not referring to ""high-leg delta"" voltage are you? I am considering requesting 240 3 phase in the delta config:This setup is as true of 3 phase as 120/208 right?

### Reply 6:
You're over-thinking things....Unless you are pulling mega-watts of power, load balance on the utilities transmission lines is not your concern. If you have 3-phase power you only have to reasonably balance power from your distribution panel. If you have single-phase power it is still the utilities concern - not yours. Of course this also assumes that you are in a fairly well developed country with stable & modern power grids.In most countries 3-phase is typically delivered to a building as a wye connection with a center Neutral connection - not delta. However, that also depends on the local power loads. Wild leg or high leg grounded delta is usually only found where most area loads are sin<rest of thread truncated>
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15144,"Date: 2014-06
Topic: NastyPool Mining Contest!  Now Thru June 12th!
### Original post:
NastyPool Contest AnnouncementAnyone who mines on NastyPool <truncated> from June 10th through June 12th will be entered into a lottery. You will get a lottery ticket for each MH/s you average from midnight June 10th until midnight June 13th. Even GPU miners should be able to earn a lottery ticket and maybe some CPU miners!When mining for the lottery, use your NastyFans username as the miner username. If your miner is less than 1 GH/s it is recommended to add +5 to the end of your username. This will allow the pool to more quickly recognize the work your miner is doing. Just keep in mind it is limited to NastyFans members. (Of course, for 0.0393 BTC anyone can buy a seat at nastyfans.org and join the fun!)After June 12th the lottery tickets will be distributed and visible from your NastyFans account. Later there will be a drawing.The prize? ... A FREE MINTED SEAT!So get your CPU/GPU/FPGA/ASIC miners fired up for 3 days of Nasty Mining!

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    ""hardware_name"": ""GPU"",
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    ""hardware_name"": ""CPU"",
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  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""ASIC"",
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16361,"Date: 2022-11
Topic: Cost to Mine 1 BTC in every country
### Original post:
Just came across this, published last month, but don't recall seeing anything like it on the forum, so just sharing.Original article by 911 Metallurgist, it's got the rates for some other crypto too but I'm just going to share the one for Bitcoin: Cost to mine 1 Bitcoin in every country.I knew Asia was expensive, but not THAT expensive. Also, I think this is the cost of grid electricity. I know in my part of the world, for example, some miners want to experiment with natural gas generators. Far, far cheaper, no one would plug into the grid!Kuwait, though!

### Reply 1:
This is a very interesting graphic since it shows at what price a miner would be selling his coins for and therefore it does influence the market quite a lot. What I think is a big problem is that they don't show the power costs that they actually used to calculate this. In many countries the cost of power can be very different for companies and private persons, so if they don't say the calculate with for example 0,25 USD per KWH then its is not as helpful as it could have been.

### Reply 2:
But the methodology is based on cost of power -- you can open the original link shared and dig in deeper. Which is why I commented that this pricing isn't entirely accurate, it's only based on commercial consumption cost by directly connecting to power grids. As you know, not all miners would do that, and not all miners pay the same rates -- like it used to be in China, where they'd be able to negotiate independent rates with state energy providers. If the other stats are true (like from Bitcoin Policy Institute numbers) then most miners already are on renewables and alternative energy sources -- so I doubt most of them are paying these rates.The data's just indicative of how much you'd pay if you just decided to plug in and mine.

### Reply 3:
And at least for the US it's using numbers that are very distorted and many times flat out incorrect. Many states have different prices for power in different areas. Discounts for agreed contracted amounts and tons of other variables. There are other countries that power is cheap but unreliable, I mean they put in North Korea where most people don't have power and except for limited exceptions it's not reliable. Pretty map but pointless in the end. Not to mention as we all know electricity although a big part is only 1 part of the cost.-Dave

### Reply 4:
This is very good information. to mine crypto in the developing should be the number one place mining should be very costly but from the link you provided, it looks as if they are even more less. mostly Nigeria, which I know very sure that they have not slept with 24/7 hours light and the Map esteemated it as $22.303. This amount for Nigeria is confusing me because if it is power that is used to determine the cost of mining then Nigerian should be even the number one in the list. Africa is blessed with natural resources even gas but irony is the case.

### Reply 5:
This whole study is bullshit, electricity price in Kuwait is 6.5 cents per kWh for ""undefined manufacturing"" which is where bitcoin falls under, which means even while using the most advanced gear you are nowhere near the 1.4k cost mentioned in this ""study"".Using the household prices it ranges from 1.6 cents to 5 cents, but long story short, once you pass 9 KWh a MONTH (which every asic miner will do in a few hours) you jump to the 5 cents tier, the 1.6 cents is for below 3 kWh a month, that isn't enough to mine a fraction of bitcoin, but ya, I understand why they had these numbers incorrect, most people who write such content are lazy, and they still get paid for writing nonsense like that.I don't know the prices of other countries mentioned in the study, but I am sure that most will be incorrect, so it's safe to assume that this whole thing is just b.s.

### Reply 6:
Agreed and since it's just talking about electric rates it leaves off a lot of other factors, some of which Phil touched on above and others that I have discussed in the past. Climate plays a large part. It's better to pay more for electric and mine in a cooler environment to keep cooling costs down vs. cheaper rates but keeping the chillers running full blast all the time. Reliability and cost of internet. Yes most of us here can run our miners off of a cable modem or whatever. The big players have multiple fiber connections and run their own BGP.And so on.-Dave

### Reply 7:
please note I fixed some typosif you have A S19 THAT DOES 100th and burns 3 kwatts an hour you pretty much have a top of the line unit.numbers below leave <truncated> price changepower price <truncated> or fall in difficultyalso I assume your miner was fully paid off00 cent power with a 100th machine burning 3kwatts cost is $0.00 it earns $8.81 net $8.8101 cent power <truncated> $0.72 it earns $8.81 net $8.0902 cent power - $1.44 it earns $8.81 net $7.3703 <truncated> $2.16 it earns $8.81 n<rest of thread truncated>
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24019,"Date: 2022-09
Topic: Is there a way to disable one hashboard on Whatsminer M30s?
### Original post:
So we have multiple m30s units that have a problem with one hashboard. Something like 'error 542- Slot 2 loss balance'.Miners with this type of issue, seems to get into a never ending, restart loop and don't hash on any hashboard, even though the problem is with just one board. We realized that we can physically remove the problem hashboard from the miner, and then the unit starts hashing on the remaining 2 hashboards. However physically removing hashboards takes time, and messes up the air flow dynamics inside the unit. Anyone know if there's an easier way to 'disable' one problem hashboard on whatsminers without having to physically remove the hashboard.

### Reply 1:
I never heard if there is a tool to disable one hashboard.So I guess the only way to disable it is by physically removing it from the unit.There is no problem disassembling the unit just make sure do not rush and clean them and assemble them properly.

### Reply 2:
Hi, I have the same problem (Error Code 542). I took it out the SM2 Hashboard, and now the miner is mining (66%), but I notice the fan-in and fan-out speed are faster than before. Do you have the same problem? Can you repair the hashboard?. Thank you in advance.

### Reply 3:
On that error code, I think it's related to an ASIC Chip and maybe one of the Chip is broken. Did you get this error after you remove the hashboard? Or did you get this error with or without the SM2 hashboard as you said?If you get the error after the hashboard is removed then try to replug the other hashboard and check the cable if it was plugged properly then test it again. But if you receive the error with or without the hashboard then find the broken hashboard that cause that issue and remove it and then you can look for a repair center near you from this link below.- <link>

### Reply 4:
Unfortunately, there is no way on the software level for this, if you want to maintain the same airflow then I'd imagine the only way is to seal/isolate some of the pins on the adapter plate that connects the bad hashboard, this way the miner would think the board is not attached and won't do go into an endless loop. Meanwhile, you could ask their support here > <link> , maybe, they have made a new update in regards to this issue, but as far as I know and up to my most recent updates, there is none.

### Reply 5:
You can check out the repair manual for the M30S hash board which has some case studies for error 542.<link>

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    ""hardware_name"": ""hashboard"",
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  },
  {
    ""hardware_name"": ""SM2 Hashboard"",
    ""hardware_is_owned"": true
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]"
21964,"Date: 2017-12
Topic: Antminer S9 breakdown issues - How frequent?
### Original post:
I just wanted to get a sense of what percentage of these units break down.I had one running for exactly 7 days and 2 boards went out.Under warranty, but Bitmain says to expect 3-4 weeks turnaround on repairs.Basically losing 5 weeks of hashing at the peak of it's diminishing value.

### Reply 1:
Saw this in the main S9 board today.

### Reply 2:
Your best bet would be to look at the main thread.What is with everyone starting a new S9 thread lately every time they have a question and simply figure everyone will give them the answer? Lazyness?

### Reply 3:
Wanted to open up discussions. I already read what was there. It seems to be yet another hurdle to ROI if you need to figure out the downtime of repairing under warranty. Also It would be nice to get perspective on repairs from bitmainwarranty in the US. I spent over $100USD to ship back to HongKong and it took 6 days. I'm wondering how much it would have cost to pay out of pocket in comparison to international shipping and lost weeks. bitmainwarranty would not quote me without the machine shipped to them.

### Reply 4:
I'd rather expect this to happen to all repairs involving batch-16 and higher (auto-tune rigs) and sounds like same for the R4.Chips/boards that perform near perfect are rare. Call it curse of 16/14nm. That said, the point of autotune is so Bitmain can pick and choose between 'meh' and better boards so the miner as a whole gives advertised hash rate. They don't want to use a better board than needed nor send out a weak sister one when it was a better board that croaked.

### Reply 5:
I did notice all three boards had a very wide variance of frequencies to yield 11/th. Guess I was better off if I chose the 14/th S9 as it must have performed optimally at the spec frequency. One board was always consistently hitting 97-107 deg (fastest clock speed), while the other two were consistently fluctuating between 79-87 deg.The slowest frequency autotune board was the one to survive though. Just got the update 5 calendar days after EMS reported delivered, that the ticket status was changed from ""uncollected"" to ""collected"". A follow up email stated that the S9 will be repaired under warranty and turned around in 3 business days.

### Reply 6:
I seem to get lucky on bitmain gear because my failure rate has been low for the few S5/S7/S9 that I have owned. I have a few S9s and the only ones I have had a problem with were the two 11Ths units I bought. They still work with all 3 boards but sometimes they only run at 7-8Ths. A quick hard reboot always does the trick. This low hashing problem only happens after they reset for some reason like loosing internet for a second. I may have just been lucky so far.

### Reply 7:
So how many batches they have made alredy 22+? And it still has bad boards and etc.

### Reply 8:
it has been their worst machine in terms of breakdowns

### Reply 9:
the heat issue is a big problem, so many chip packed togather

### Reply 10:
They should have just made a bigger box or something

### Reply 11:
The first time i opened my miner I shook my head at the 100% lack of thought that went into the performance of cooling. Purely cost effective for them. If anyone has a dead s9 board they dont mind donating to the cause im more then happy to see if a water block is a possibility. Biggest concern is removing the dollar store heatsinks they seemed to have welded on.

### Reply 12:
Actually I have been wondering about Bitmain's devices. Would it be worth it to ship units to me for repair (not affiliated with Bitmain at all, if they wanted to send me schematics that would be nice) for a lower time to repair?If so I'll look into their next unit and see what it would take to fix failures. But maybe the failure rate is low enough/the warranty is strong enough for this to not make sense?C

### Reply 13:
So total turnaround from shipping via USPS from NYC and them sending back* was 2.5 weeks. However, I received a brand new 12/TH S9 to replace my defective 11/TH. Serial numbers, firmware corroborated.The new 12/TH has been running flawlessly 24/7 for almost 3 weeks.In retrospect it would have been worth it to pay for repairs at bitmainwarranty.com as the shipping out cost and lost mining time probably was about the same as what they would have charged for an out of warranty repair. But it appears that they replace units too according to other forum threads I've read. Must be Bitmain or have a very close association with them since their help desk software was exactly the same.

### Reply 14:
Bitmainwarranty is in some kind of business partnership with bitmain .They have two or three locations outside China to do repairs.They are better if you have out of warranty gear and live in the lower forty eight states.

### Reply 15:
Use a heat gun at about 400c and make sure you wiggle them back and forth slightly while heating, you will feel them loosen and that way you<rest of thread truncated>
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    ""hardware_name"": ""boards"",
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    ""hardware_name"": ""S5"",
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    ""hardware_name"": ""S7"",
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  {
    ""hardware_name"": ""11Ths units"",
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    ""hardware_name"": ""dead s9 board"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""dollar store heatsinks"",
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1946,"Date: 2013-10
Topic: [OPEN, 98/100] R10: BLACK ARROW Bullet Run w Bitfury. 40% off + Host + UPS
### Original post:
Excellent! Thanks again for your help getting that beefy UPS to our colo site Philip.Looks like Thomas moved almost everyone in R10 to R9. Therefore: stock is being revised upwards again.98 shares available.They're multiplying like raving rabbids.==Latest update from bobsag3: Latest word is that the Black Arrow Bitfury boards should be done in the next 72 hours.

### Reply 1:
Quick UpdateWaiting on blockchain should have payment in for Order: #281 Date: October 18, 2013 tomorrowThanks DBA

### Reply 2:
Happy to have you on board! lol I made a pun. And bought chips from punin. Hehe.

","[
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    ""hardware_name"": ""UPS"",
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    ""hardware_name"": ""Black Arrow Bitfury boards"",
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  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": true
  }
]"
1063,"Date: 2013-08
Topic: [OPEN HOSTING] VMC = AMC - Fast HASH One - GB - 8.85/50 sold - PAYPAL + SKRILL
### Original post:
Bumpity bump!

### Reply 1:
So each 1BTC invested should equal 256/50 = 5.12 Gh/s is this right?

### Reply 2:
to be honest it depends on the btc course at the day of purchase.I think 1 btc should result even more than 5.12 Gh/s something even about 5.50 Gh/s maybe

### Reply 3:
Will you take USD paypal payment for shares?

### Reply 4:
yes I will, PM for details

### Reply 5:
A few questions..Has the machine already been ordered? Estimated arrival date?Also, will the miner be hosted at a datacenter, someone's private residence, somewhere else?thanks.

### Reply 6:
The machine is not ordered yet, we are still collecting funds.The miner will be hosted at datacenter with all the other mining hardware.

","[
  {
    ""hardware_name"": ""Fast HASH One"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining hardware"",
    ""hardware_is_owned"": false
  }
]"
3988,"Date: 2018-02
Topic: KNC Miner [NEPTUNE 3000GHS] GROUP BUY ALL SOLDOUT
### Original post:
The Neptune for this GROUP Buy has been paid. It's one of the earliest orders and a DAY One order so we are sure to be one of the first to get the units. If you are considering other groupbuys, please ask them if their Neptune unit has been paid for. All orders that were not paid has been canceled by KncMiner. Also ask them if their unit is part of the Batch 1 group as the second batch is expected to arrive 3-4 weeks after the First batch. 3-4 weeks of lost revenue could mean thousands of lost $$$. Due to BTC recent price fall, the price per share is now .55 BTC. All previous orders will retain their share rights. All new share purchases will need to send .55 BTC per share. Date and time stamp is: December 02, 2013, 11:21:24 AM Groupbuy 1 - SOLDOUTGroupbuy 2 - SOLDOUTGroupbuy 3 - SOLDOUT This group buy is intended to let forum members take part in the opportunity to purchase cheap hash-rate through the recently launched KNC Miner Neptune(<link> company located in Stockholm, Sweden. The unit that the shares relate to is the KNC Neptune advertised for 3,000 GH/s (<link> Why trust me? I've previously had a group buy with the last KNCminers and all members received their fair share as <rest of post truncated>

### Reply 1:
Looking forward to delivery. Thanks for all your hard work and time spent setting this all up Charles...Got any pics of past mining rigs or of the room that will be housing this incoming rig?What moves are you making right now to get all set up for this inconming equipment?Oh, and... Anyone who wants to get out, message me with an offer and I'll take your shares.Chapps

### Reply 2:
I have a question. Where (location) will the equipment will be hosted? Is the location a known datacenter?

### Reply 3:
TOP Secret information! Just know that it'll be a cold room and there will be plenty of power in the room. Only thing I am awaiting is the specs on what type of power supply I will need for each unit. Hope it doesn't require more than 2 power supply per unit. I hate having an ugly server room with wires running all over the place. So far I haven't heard any request for a refund. I do still check my charles999 account. These mods don't like to respond to messages I write them so doesn't look like that account is going to be unlocked from sending messages Just message me if you need to get a hold of me. I don't check the thread too much as there's nothing to post here until there's new KNC news.

### Reply 4:
I did not want to know the actual location. My question was informational as to if you , for instance, work in a datacenter and can/will utilize that space or you have a computer room with servers and will use that.

### Reply 5:
Do we expect more groupbuys organized here?

### Reply 6:
@stergium - Yes, it'll be in a datacenter along with my other units. @maco - Sorry, no more shares will be offered for the Neptunes. If anyone wants to get out of their shares, i will buy it back from them.

### Reply 7:
I brought 6 shares when BTC was at $1043 IE 3 BTCanyone interested to buy these from me at about 6 BTC ---- BTC price is $469 at MTgox

### Reply 8:
If anyone is interested in buying my shares send a PM. 0.9BTC each.

### Reply 9:
Both Ejinte and Hardpick have shares so their offer to sell is valid. But do not exchange funds until you confirm with me someone actually have shares.

### Reply 10:
All sold out and mining?

### Reply 11:
I have 2 shares in this, willing to sell one of them if anyone is interested? PM with offers.Charles, please can you confirm I have shares in this group buy?

### Reply 12:
any status update? shouldn't this be hashing by now?

### Reply 13:
Charles99, are these mining yet?

### Reply 14:
I brought 6 shares when BTC was at $1043 IE 3 BTCIf anyone wants to buy in my 6 share are for sale for 3 BTC

### Reply 15:
Selling 5 shares at .4 Each. Message me.

### Reply 16:
Update on progress please Charles?

### Reply 17:
all of these could not be mining since knc hasnt produced Neptunes yes. Yesterday , they announced the successful productoin of 20nm chips. <link>

### Reply 18:
This is the latest I've got on this also. They hven't sent any emails. our bitcoins are bleeding away each day

### Reply 19:
It looks like due the power reduction from their first test units means they are reworking the batches to conform to this improved power consumption. Plus they are reworking their hosting options. Let's ensure we are getting the hosting as Jupiter's were a mess and are not very lenient when you change your mind.Looks like it is very soon now.-DE

### Reply 20:
Anyone think we should convert to a Scrypt Titan miner? I personally dont. just a thought.

### Reply 21:
Dont be fooled by the above poster charles99, its a scammer and not the GB leader.

### Reply 22:
I don't think so.He's been posting in this thread as charles99 for a while. If he wasn't the same person I'm sure Charles999 w<rest of thread truncated>
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    ""hardware_name"": ""KNC Miner Neptune"",
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  },
  {
    ""hardware_name"": ""power supply"",
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  },
  {
    ""hardware_name"": ""Scrypt Titan miner"",
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5277,"Date: 2013-06
Topic: [Ann] US based Avalon ASIC chips and assembly: 2,610 remaining
### Original post:
-----BEGIN PGP SIGNED MESSAGE-----Hash: SHA1I confirm the receipt of the documents below. Please note that I am not a professional nor trained in verifying documents given, so I cannot gurantee that they're 100% authentic or came from the original owner.1. Scan of steamboat's driving license2. Scan of steamboat's mail proving his residence3. Photo of him with his ID and a sign (with my forum profile)4. Scan of Federal EIN5. Articles of incorporationI promise the safe destruction of the data after the successful completion of the group buy/release of identity by steamboat himself. The data received may be divulged for litigation purposes if needed.Thanks,John7 June 2013-----BEGIN PGP <truncated> GnuPG v1.4.11 <truncated> PGP SIGNATURE-----

### Reply 1:
You didn't look a this part.Testing is TBD as to the price.Step 1: buy chips @ 0.086 each (in units of 16 for K16)Step 2: Pick assembly option when you get the e-mail to do so.Step 3: Send in BTC for option picked in Step 2. Presumably pay for shipping of units at that time, if you want your units. Otherwise, pick hosting option.Step 4: Sit back and enjoy the hashing.Step 5: Thank Steamboat for making this process as painless as possible.[/list]

### Reply 2:
Hi,40 more ASICs. 3.44BTC sent. e-mail sent.

### Reply 3:
hmm with this drop in price for BTC I am thinking about getting another unit!

### Reply 4:
How to sign <link>

### Reply 5:
thanks a bunch, got it now!

### Reply 6:
Order Placed:Chip amount: 64Assembly: Fully assembled + TestingPayment amount: BTC5.504TX ID: <truncated> sent.EDIT: this may show my noobness, is it possible to sign a message on blockchain.info only? I know that you just hit the sign message button insert the info and then a string of characters are generated at the bottom, what do you do from there? This video states you have to go to another site to complete it.

### Reply 7:
Since everyone else seems to be doing it even though I'm pretty sure it's not required, here's some info from the buy order I'm placing as we speak.Chip amount: 64 (I'm an idiot) 48Payment amount: 4.128Assembly type: Assembly and DIY kit

### Reply 8:
Are these shipping now?

### Reply 9:
Not yet, no. Would estimate late Sept, Oct.-ish... we hope...

### Reply 10:
4.386 BTC payed for 51 chips in batch 5.

### Reply 11:
The chips are slated to arrive early to mid August. The assembled units are scheduled to be shipped 3 business days later. All purchases received, recorded, replied.

### Reply 12:
That is SERIOUSLY exciting!! BTW, I don't think I specified when I ordered if I want assembly or not (I do). Was I supposed to have already done that, or are you planning to ask everyone at some point?Thanks again for all the work on this!

","[
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90,"Date: 2013-05
Topic: [Group Buy] Avalon ASIC Chips (SebastianJu) Batch 2: 5323 ASICs gone 15323 sold
### Original post:
agfj; 5; 0.43; <truncated>

","[
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    ""hardware_name"": ""Avalon ASIC Chips"",
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]"
14724,"Date: 2013-05
Topic: How many ASIC miners are in operation?
### Original post:
For the first time even the mining pool I use, btcmine.com had what appears to be a ASIC mining running as one user on the top mining board got over 60,000MH/s.So anyone got a guess how many ASIC devices are out there right now in operation? If you do try and show some working out of how you got to you conclusion

### Reply 1:
Butterfly Labs are probably using several ASIC devices...

### Reply 2:
bfl are using avalons in order to prop up their overspending

### Reply 3:
In wouldn't like to take a guess but its getting harder and harder on my gpu's!

### Reply 4:
Back in February, before the first ASICMINER chips went into production which was just before the first two Avalon ASICs shipped, there were 22 Thash/s of capacity. Today there is 85 Thash/s. Even with the rising exhange rate, there is likely less GPUs mining bitcoins today than in February since there was probably more that defected to Litecoin (due to Litecoin mining being a little more profitable than Bitcoin mining even, over the past couple months) than came online since February. And almost nobody is buying FPGAs anymore. So it is probably safe to conclude that about 63 Thashs/s of ASIC mining capacity has come online. I don't know the distribution as far as how much is ASICMINER's that they are using for their own mining, versus the shipments of Avalon ASICs and BFLs.If that capacity were all Avalon ASICs, that 63 Thash/s would represent about a thousand units (and they've not shipped anywhere near that).

### Reply 5:
I think this springs rally and spike in interest has brought a lot of new GPU miners and they're quite a few people still buying FPGA's. KNCMiner is about to release a new FPGA - <link> - but yes I don't think most of the new growth was GPU/FPGA but probably a fare bit of it was.

","[
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    ""hardware_name"": ""FPGAs"",
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    ""hardware_name"": ""KNCMiner FPGA"",
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8876,"Date: 2015-02
Topic: What type on miner is the SP20?
### Original post:
All, still clearly learning and digging around and i made the mistake of assuming i knew what type of miner i had to when i added it to rig MRR overnight i ended up with some peeved people.I thought it was a Scrypt rig , but the two people that hired them overnight told me otherwise along with some other choice words! Can someone point me in the right direction? Thanks in advance.

### Reply 1:
well the folk at spondoolies are pretty good guys they may just take it back as a refund for laughs i'd ask themif not you prob can get it sold for a bit more then the sp20 site price on ebay esp if you take paypal (put no returns as is with any problems contact mnfg all sales final see other auctions of same unit sp20)...I am pretty sure the warranty follows the unitI'm on the fence on getting one...and such .could be worse at 479 plus shipping I'd just mine the dang thing..if you are hostingand run it as a business .and in USA....then use equip depreciation on it with IRS and in real $$$ applied to taxes in 5 years (they treat it likecomputer equip) 100% off gross income 20% a year comes out net to 25% off equip applied on the taxes you should have paid instead each year...if you run it out 5 years as a biz....that should help you decide (me 3 yrs to go on my stuff)anyway all I have .....but imho you MAY have a shot for a refund if they get a good chuckle out of it (or I think they take paypaland if you paid with cc option ) but again....up to them ...just saying ..they gave me a 6.3k refund and they did NOT have to when I found out my home miner operation with an sp31 was not wi<rest of post truncated>

### Reply 2:
I don't want a refund i'm happy mining them, the 3 of them right now are currently running at 1613, 1625 and 1592 i'm very happy.I was just seeing what i could do with them that's all.

### Reply 3:
a you got the 3 per pkg....well there is always sha256 Tekcoin! (ducks hey don't throw stuff at me in bitcointalk)well don't feel bad i did ok with a knc jupiter in 2013 at 7.5k with psu got 50 btc out of itbut then knc went ahem....being polite here...in a more 'dark direction' let us sayand I spent 10,131.80 usd on the knc Titan no roi no refund scrypt miner.....live and learn at least with equip depreciation etc I can maybecut that loss down in 5 years to 7.6k but I am waiving prob 4k good bye ....live and learn ...but except for the occasional very small toy (like the sp20) someday for fun...home mining for me is pretty muchdead ....probably www.coinbase.com now is my friendand i'm into 'attic mining' the NEW trend...sell 30 years of crap in attic on ebay and buy btc ...will make me a heck of a lotmore then mining btc.....at worst if btc fails i get a clean attic and a rec room i got to have 4k of crap i can sell on ebay up there!*just saying more then one way to play a bad hand*

### Reply 4:
They are SHA-256 miners. So rent them out as either that or Bitcoin miners.

### Reply 5:
Many thanks Biffa, i got there with a reply thankfully from MRRAll happily running and pulling their weight .<link>

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    ""hardware_name"": ""SP31"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""KNC Jupiter"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""KNC Titan"",
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6695,"Date: 2013-11
Topic: Who else has 65nm BFL chips on hand?
### Original post:
So I'm stuck with 87 chips that were delivered too late for me to get in on MrTeal's batch 1 or batch 2 Chili productions.MrTeal says that a third batch could happen if there are enough orders for 100+ boards:So...with 713+ more chips it could happen.Is there anyone else out there stuck with these chips? Post how many chips you've got, and let's see if we can make this happen.

### Reply 1:
I have not been following this however have you spoke to marto74<link> you can do a deal with him..

### Reply 2:
I still have 16 chip credits. Not the actually chips themselves. What would be the best way to use/trade them?

### Reply 3:
Thanks, I'll inquire with him. I've also inquired with Lucko himself in his Cointamination thread but have not heard back yet (I imagine he's in bed asleep now).Yeah, everyone has chip credits. They are of no use for this effort, unfortunately.

### Reply 4:
Could make them into Wasps... just need to see if any of our EEs would be keen to even bother with these. Drop me a PM.

### Reply 5:
Give them to someone you don't like.

### Reply 6:
I have 10 chips myself. Would love to get these made into something.

### Reply 7:
Thanks. We've exchanged PMs now and I ordered 10 Chilis from the webstore. I just shipped the chips off an hour ago or so.It looks like they have another 17 boards available to purchase yet.I kept 7 chips here. Maybe I'll try putting some onto my jalapeno boards like this guy did:<link>

","[
  {
    ""hardware_name"": ""65nm BFL chips"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Chili"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chip credits"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Wasps"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Chilis"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""jalapeno boards"",
    ""hardware_is_owned"": true
  }
]"
11146,"Date: 2022-05
Topic: TTL USB BASICS - MinerMEDIC HOWTO
### Original post:
One to the most basic tools every <truncated> must have for troubleshooting is a TTL to USB interface converter. This is the USB device that provides all mining machine control boards a way to communicate with the outside world when all else fails (read ethernet network). The TTL Serial interface, TX/GND/RX for Zynq based units, Pin 1(GND), Pin 4,(RX), Pin 5(TX) on BeagleBone Black based units, is the most basic, most reliable way to communicate with any CPU. Internally this function is provided to the CPU by a piece of technology called a UART, so you'll se it referred to by that name too. The data emanating from the TX pin starts flowing almost immediately upon startup and contains almost the same data contained in the kernel log but provides it way before the web interface has been initialized, Plus it is live( thus never requiring a ""refresh""). All these reasons are why a Serial/UART/TTL to USB connection will always be used in troubleshooting if you have any expectation of a positive outcome.To capture the data streaming in from the TTL wire to your USB converter and display it on your computer screen you need a terminal program .There are Sooooo many terminal software package<rest of post truncated>

","[
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    ""hardware_name"": ""TTL to USB interface converter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining machine control boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Zynq based units"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BeagleBone Black based units"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UART"",
    ""hardware_is_owned"": false
  }
]"
653,"Date: 2013-07
Topic: Australian Built Mining Rigs. (Looking for Investors)
### Original post:
Hi QG - yes, we haven't ordered the chips yet.Yes, air cooling. I own a 3 module and achieve around 65 GH/s running normal speed. Overclocked it gets to 70 GH/s but I only overclock to 300M. We arrive at 102.4 GH/s from 320 chips x 320M frequency. Power consumption would be in the 660w range from a standard PSU.ub3rCoin is our EE. He has practical experience in circuit board design and modification and will post some pictures of circuits that he works on soon. He is also proficient with C.Yes, production is dependant on investor interest. Chips will only be ordered if sufficient interest is here (and if they're still in stock!) Dependent on various factors: pps or pool option / variance & future difficultyWe will be doing the manufacturing in-house. We have access to surface mount technology equipment and source our parts from Avnet, one of the most trusted electrical components suppliers.Thanks, we realise that the chip delays are the big hurdle from Avalon & BFL. We are not locking in with Avalon at this stage and are looking at BitFury chips as a better alternative. We have requested sample chips and will keep this thread updated on any news.More information on BitFury can be fo<rest of post truncated>

","[
  {
    ""hardware_name"": ""3 module"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""320 chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""standard PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""surface mount technology equipment"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BitFury chips"",
    ""hardware_is_owned"": false
  }
]"
13793,"Date: 2022-09
Topic: Need help with cgminer-api
### Original post:
Hello everyone,I'm tinkering around a cgminer implementation on bitmain asic mining firmwares that is driving me crazy. I have two questions. I hope some of you may help me sort out what I'm getting wrong. If i query cgminer-api pools the system counts an overall of 6 pools, but in the following details in the 'cgminer-api pools' result I see only 4 pools, not 6. 1. Are the remaining 2 hidden or it is some kind of malfunction?Also I'm going nuts trying to find the correct syntax for 'cgminer-api removepool' or 'cgminer-api disablepool'. 'cgminer-api pools' Reports pools from no. 0 to no 3. If I try 'cgminer-api disablepool 1' for example I get invalid argument error for the disablepool command. From some research it seems I should be using some pool ID in the disablepool or remove pool commands, but i cant find this pool id information anywhere.2. What am i doing wrong in using these commands? Does anyone of you guys have any suggestions? Thank you so much, its been over a week now I'm stuck at this! Francesco

### Reply 1:
Based on what I heard that cgminer api pools command it is a known issue that these commands you mention above do not work but try to read this one on how to use it- <link> not try other OS like Braiins OS to try those API commands available on Braiins OS you can read this <link> can also try HiveOS they do have more options on their web interface and I think you can achieve what you want to achieve in your ASIC unit.

### Reply 2:
Thank you very much Bitmaxz for your kind reply.That line you linked on api-readme regards the API groups. In the group I'm using I'm allowed to use all pool related commands. as a matter of fact I receive invalid argument, not forbidden, as a reply.Braiinsos has a terrible mining engine running at over 10c more than cgminer at same performance levels. Also it is much less stable than cgminer. Hiveos is very poor in programming quality, i.e. it throttles fans according to pcb temps not chip temps (LOL).Any other ideas? Thanks friends

### Reply 3:
What is the exact unit model of your machine?How do you send these API commands?Note that all bitmain units are API restricted or it has limited function. So if the commands that you want to make it work but do not work you can try access SSH and send that command there.

### Reply 4:
As the API-README states, you can't change settings in the miner without privs enabled in the miner for your IP address.You may have read access due to the settings, but not 'write' access. Read the W: part.The default settings in the miner are up to whoever provided you with the firmware.P.S. linking to an old out of date git isn't the best idea See my sig. I wrote the API and the manual.

### Reply 5:
Thank you very much Kano and Bitmax for your kind replies. Have 2 new babies in the house and I don't have access to pc often these days. Here are my replies to each of your questions and feebacks.To Kano: I studied the api-readme, I have the commands enabled in my api group. As a matter of fact when I issue the command via SSH I do not get forbidden reply from the api, I receive the missing pool ID reply. I do not use W: group as I had some issues in understanding what IP where my commands being received from, so I changed the default api group adding the commands I needed and it seems to be working fine. I know you wrote the api and the readme, so I'm honored you are actually replying to me in person! To Bitmaxz: I am working on several machine types (bitmain Antminer L3+, t17, s17, if I can make the few changes I need I would really need also to extend the work to s19). I send the commands via ssh interface.Thank you so much for your help!Francesco

### Reply 6:
As API-README says - you set different access to different IPsSSH is 127.0.0.1scam coins belong elsewhere.

### Reply 7:
One last quick question, can you please help me clarify this syntax error of disablepool command?Thank you very much!

### Reply 8:
Code:The JSON request format required is <truncated> of course parameter is not required for all requests)where ""CMD"" is from the ""Request"" column below and ""PARAM"" would be e.g.the ASC/PGA number if required.An example request in both formats to disable <truncated> list of requests - a (*) means it requires privileged access - and replies:Request Reply Section Details------- ------------- <truncated> (*) none There is no reply section just the STATUS section stating the results of disabling pool N The Msg includes the pool URL

### Reply 9:
Thank you very much Kano.I did study that part of the readme word by word but the command didn't work as written, on my end. After many hours of trials, I found out what the issue was. I'm writing it extensively so anyone that comes across my same issue may benefit. Sending the command cgminer-api disablepool|1 (as I understood from the readme) could not work because the symbol ""|"" has its own meaning in Linux and gets interp<rest of thread truncated>
","[
  {
    ""hardware_name"": ""bitmain asic mining firmwares"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC unit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bitmain Antminer L3+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  }
]"
19684,"Date: 2014-08
Topic: setting up 1th
### Original post:
I recently bought a 1th/s machine as an upgrade to replace my 100gh/s. It is lovely but I cannot connect to its IP address. No matter what I do or how I fiddle with it, it will not allow me to connect. All the signs on the machine (lights, noise, reaction to being plugged into internet and attempting to connect and mine) are working and showing me that it works, I just can't connect. I am turning to you all in the hopes that one of you can help me solve this. Included will be links to the page of instructions I was given and the ebay item so that you can see and maybe give me better advice knowing what I am working with. <link> help but keep your instructions as simple as possible as I am still a newbie. also info from the seller. Hello. The sticker must have fallen off.Here are a few things we need to do:1) Make sure your router is configured for the 192.168.1.X subnet. To do this please let me know the IPCONFIG of a laptop or desktop on the same network so we can see the settings.2) Make sure the machine is powered on, connected to Ethernet, and the lights on the Raspberry Pi are turning on.3) Download NMap tool for Windows from here: <link> Open NMap on a computer using the same<rest of post truncated>

### Reply 1:
Open up router and look at connected devices assuming you are using 192.168.1.* and miner is to it will show in device list.That is easiest way to find it. Using nmap not knowing what your doing i highly don't suggest. If use wrong IP your scanning the internet. Reading your post i think device list is where you should look at not run a IP scanning tool.

### Reply 2:
Thanks I'll give it a shot

### Reply 3:
If you can't figure it out doggie has many guides on how to setup or different machines.

### Reply 4:
It doesn't come up on the network map.

### Reply 5:
Looking at pictures of Ebay auction at least one is a standard 4 blade dragon. It looks like there are different models of A1's on auction. (different vendors)You could try to flash a second SD card with a firmware for a dragon with known IP and see if that works. Again I say flash a second SD card since you should keep the original.

### Reply 6:
[/quote]If you can't figure it out doggie has many guides on how to setup or different machines. [/quote]Can you post a link please? Would be so helpful.

### Reply 7:
Do you know of a page with a walkthrough on that? Also is there a way to change to IP address of new miner to the IP of the old miner? That would be great!

### Reply 8:
Yes it's on hardware forum. If you search there is a Dragon guide. The is one by pcfli with instructions I know because I uploaded a image to it . If you search you will find it and instructions, make sure to use 2nd sd card 8 GB or bigger with it. Don't use original as if this dosent work we want to still have that card.

### Reply 9:
here you go <link> this is one of lee's threads on the dragon miner

### Reply 10:
<link> part 4 directly has image and instructions.Again make sure to use 2nd SD card.

","[
  {
    ""hardware_name"": ""1th/s machine"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""100gh/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""laptop or desktop"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""NMap tool for Windows"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""4 blade dragon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  }
]"
13799,"Date: 2022-09
Topic: I need a freight forwarder recommendation
### Original post:
Hey guys, I would like to buy a mining machine from China, is there any recommended freight forwarder?

### Reply 1:
I don't know any freight forwarder in China but I think I know a person who can help you and I think he can also help you to find a company that sells miners near your location. Try to contact this man offordscott or join to his telegram here <link>

### Reply 2:
Still needing one?

### Reply 3:
YES, do you have a recommendation?

### Reply 4:
Quick question. Are you talking about alot of machines, because when you say mining machine, is that just like 1 or 2 or even 10? or like 200?If you are talking 10 or so, just let the seller arrange through a local shipping house. They usually use DHL or UPS and air freight it. I get ASIC miners via air cargo all the time.If you are talking about a full container, or even a partial container, then you need a freight coordinator. I moved a 40' container with a transformer this way. I can give you the contact but clarify at which scale you are talking.

","[
  {
    ""hardware_name"": ""mining machine"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""40' container"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""transformer"",
    ""hardware_is_owned"": true
  }
]"
17101,"Date: 2012-04
Topic: share your bamt.conf please - if running cgminer and poclbm kernel
### Original post:
struggling to get it all going and looking at working config might just help that dim lightbulb in my head get a bit brighter. i use cgminer for my double duty windows machines and the default BAMT miner and kernel for dedicated miners but i'd prefer to use cgminer across the board. thanks.

### Reply 1:
well i need some help here too

### Reply 2:
Why don't you guys look for help here: <link> ?

","[
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BAMT miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""poclbm kernel"",
    ""hardware_is_owned"": false
  }
]"
10969,"Date: 2021-07
Topic: What is the average lifespan of an ASIC miner ?
### Original post:
Hi,Suppose that Asic miner is working 24/24 and 7/7 in normal conditions with free electricityWhat is the average Hardware lifespan ? I will appreciate any documentation about this Thanks

### Reply 1:
Free electricity is irrelevant and by design miners are intended to run 24x7x365.That said, it depends on the make and model. If kept reasonably clean and ran in reasonable temperatures the Avalons from Canaan can easily last many many years. I have over a dozen A841's from 2018 that are still running perfectly with zero maintenance (but in clean environment).Miners from Bitmain are more of a crapshoot. I have a R4 from 2017 that still runs flawlessly and 2 others that died in about 2 years. Early s9's were near bullet-proof up to around batch-9, later ones up to a 15-20% failure rate within 2-3 years OR LESS.

### Reply 2:
There is no answer to this question, and am pretty sure you won't find any documented studies in that regard, the ASIC mining industry is relatively new, and gears become obsolete quite too often, so they switch hands very fast from the ones who have high power rate to those who pay less until it eventually ends up in the hands of those who have free power or the gear could be scrapped.With that in mind, most used gears have little to no information on them, you buy a used gear that has changed hands a couple of times until it got to the seller, you don't know if it has been mining for a month or a year, and thus whatever numbers you get to will be far from accurate.The second issue is the fact that the quality of every mining gear is very different, every model is different, and even within the same model every batch will be different, you are talking about Chinese manufacturers that have little to no quality control, so if you ask me about Bitmain failure rate regarding the 17 series, It has now easily passed 80% failure rate in less than 2 years, if you ask phill he got lucky the s17 pro version and has almost no failure rate, we bought the same gears, probably a few months apar<rest of post truncated>

### Reply 3:
Mikey brings up a good point talking about miners being resold possibly multiple times: You included the point of ""free electricity"" in the OP. The only reason that should matter is if you are getting used & older, less power efficient, hardware. Point being the question for you that should bring is, ""the hardware is x years old, how much longer will it last?""Are you looking at using/getting old to very old gear?

### Reply 4:
Well, of the thousands I've seen and heard about in the past, most last quite a lot longer than just 1 year, and indeed the older Canaan miners have a reasonably good record compared to many other miners.Of course there will be some % that will not survive that, but that % can also depend on other factors.One (small) factor that I would suggest, over the last few years, is that more BM miners have been treated worse than before, due to people over clocking them and destroying them much faster, then selling them off, if they still work, to some sucker who may have been ignorant of this going on with every after market firmware that exists.To understand this for anyone who's not sure about what that means: it's very much like if someone wanted a great GPU for gaming, then bought it 2nd hand from someone who had it running 24/7, hot, mining some scamcoin for 6 or more months, you'd pity anyone who would buy that card 2nd hand, since you would certainly expect a shorter life for it, compared to someone playing games with it even daily for 6 months.

### Reply 5:
Yes I'm going to Re-use old miners

### Reply 6:
Thank you all for these answers. So when you said a miner is dead, this means that probably ( with high probability ) one or more sha256 chips are KO. Is this chip the most fragile component on a miner? and overclocking them reduce drastically their lifespan ?Are there other reasons that reduce the lifespan?

### Reply 7:
There are other components that fail, but most of the time is a dead chip or a few of them, if you think that is a small problem which can be easily and cheaply fixed then you need to do more research, the average fix for a chip would be in the $100 range including labor, of course it depends on where you live, but if you are going to buy a used gear for $400 today, chances are by the time it needs fixing you can buy it for $200, fixing a single chip for $100 or even $50 does not make any sense, so more often than not and especially with the old gears, once a single chip dies, the whole board is rendered dead as far as logic is concerned.Another common issue would be the PSU, many gears are known to have fragile PSU, and the problem is, most gears today don't use a universal 12v PSU which you can buy of anywhere, they rather use their own designed built-in PSU which in most cases are hard to find, many people have perfectly working miners that ne<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Avalons from Canaan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A841's from 2018"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Miners from Bitmain"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""R4 from 2017"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Early s9's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain failure rate regarding the 17 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17 pro version"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Old miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sha256 chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
22844,"Date: 2019-01
Topic: Avalon 741 - Wifi via USB with aerial
### Original post:
I tried to search on google also here in the forum but I don't see any procedure to make the USB wifi work on Avalon controller. It needs an extra driver and I think it is not compatible with Avalon OS. My suggestion if you want to extend your wifi range to reach your Avalon controller much better to buy a wifi repeater.

### Reply 1:
Yep,wifi repeaters is the way to go.You can also see if ""wireless mesh"" would be ideal for you.<link> also powerline ethernet is one option.<link>

### Reply 2:
hello everyone,i'm setting up my avalon 741 a long way from the router so i have enabled wifi mode. The rasp3 wifi is not strong enough to reach my routers signal so i have connected a USB wifi dongle with an extended wifi cable/aerial.but how i can i ensure the rasp3 uses my usb wifi and does not attempt to use the onboard wifi chip? is it possible to install the USB drivers into the controller OS?thank youzac

### Reply 3:
thank you for your replyzac

### Reply 4:
I'm using a NETGEAR N300 WiFi Range Extender (EX2700) 32.99 at Amazon, to provide internet to my S7 miners at my cabin just to keep the cabin warm. It is much easier than running CAT 5 cable and it works great. Just plug in a short ethernet cable between the Netgear and your Pi, no drivers needed.

### Reply 5:
there should be away around this, but it really isn't worth the hustle, you either use what the other guys suggested or better yet run an Ethernet cable.since your usb wifi can catch the signal from the router then the distance is not that much, depending on what there is on the way from the miner to the router i highly suggest using a CAT6 cable to run your miner, wifi is not a robust connection that you can depend on for 24/7 , imagine you solo mine and once your miner finds a block , some signal interference happens and it fails to broadcast it. it is really not worth it to run a miner on wifi even if it works for everybody that you know, all you need a little bit of bad luck to be screwed.should you insist on using wifi, use something like vistumbler to identify the best wifi channel to use according to your environment, this minimizes the interference possibilities , most wifi's run on channel 1/6 but it depends, just scan and see.also make sure you using 2.4 GHz if you have more obstacles to go through. 5 GHz routers provide faster transmission but they don't do well in long range.

### Reply 6:
thank you everyone. I have decided to run an ethernet cable. its going to be a big job to get it to where i need it but i think its worth it.

### Reply 7:
just ensure you are not running the cable close to any electricity wires or else it could be worse than using wireless, if you must run them close to any cables, then use shielded Ethernet cable instead of regular cables.edit : if cat6 is expensive where you live, cat5 will the job just fine.

","[
  {
    ""hardware_name"": ""USB wifi dongle"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NETGEAR N300 WiFi Range Extender (EX2700)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ethernet cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CAT 5 cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CAT 6 cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""shielded Ethernet cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wifi repeater"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wireless mesh"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""powerline ethernet"",
    ""hardware_is_owned"": false
  }
]"
871,"Date: 2013-07
Topic: [OPEN] BITFURY hosting - 3 units ordered - 1btc= 3 GH/s - 81% / 1200 TH sold
### Original post:
please remember before you consider taking part in other GB,that we actually got nice place in delivery queue, that means mining a bit earlier than competitors

","[
  {
    ""hardware_name"": ""BITFURY"",
    ""hardware_is_owned"": true
  }
]"
8867,"Date: 2015-02
Topic: ASICMiner controller Question..
### Original post:
I've read the stock controller on Prismas/Tubes are unreliable andyou can use a uart/usb adapter in its place.So...whats the most reliable road to take from that point???Hook it all to a usb brick and Pi???

### Reply 1:
The Tube controllers work alright for Tubes, but I've had very little luck running a Prisma off one reliably. And when I say ""work alright"" I mean there's no failover pool options and their stratum implementation is broken so it only works by default on a few pools (we've cooked up some proxies that scrub out some of the problems, but not all).The USB adapters give a lot more flexibility, as support is now built into cgminer.I've had Prismas running for a few months on USB adapters and Pis using CrazyGuy's Minera image. They're as stable as Prismas get, I reckon.If you're in need of the proper USB adapter and can't get one from AM themselves, check here: <link> like Novak's adapters better than AM's stock adapters. There's probably not much functional difference though.

### Reply 2:
Thanx for the feedback!!! And you prolly hear this a lot but---When they release the next gen miners and I need some power,I will be lookin at your power supply deal. Also, I have sent a few other noobs (like me) your way.

### Reply 3:
Oh, um, thanks.

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  {
    ""hardware_name"": ""Prismas/Tubes stock controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""uart/usb adapter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""usb brick"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Pi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Tube controllers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Prisma"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB adapters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CrazyGuy's Minera image"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AM's stock adapters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Novak's adapters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""next gen miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  }
]"
20124,"Date: 2014-12
Topic: Am I mining?
### Original post:
Hi this is my very first attempt at bfgminer and slush pool..... I have attached a pic. Is this actually working? Noob here.Thanks <link>

### Reply 1:
Yes, but no shared accepted because your GPU speed is super low GPU mining already ended. You need ASICS nowaday.

### Reply 2:
Great thanks for the reply!I have ordered some mean Asics. I just wanted to get the process right before they arrive

### Reply 3:
yes you are miningtill your ASIC arrive you can try mining X11 or other GPU coins and increase your knowledge about mining so you don't face much problems with your asics

### Reply 4:
For GPU mining, use a pool like yaamp.com or ipominer.com. Don't waste energy on BTC mining with a GPU.

","[
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASICS"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mean Asics"",
    ""hardware_is_owned"": true
  }
]"
15038,"Date: 2014-04
Topic: KryptoTax for Miners ?  Similar tools?  IRS Notice 2014-21 q8
### Original post:
Hello all!I am sure that you have read IRS Notice 2014-21 Question #8:""when a taxpayer successfully mines virtual currency, the fair market value of the virtual currency as of the date of receipt is includible in gross income""So, is there a KryptoTax type site for miners to import their data and have it spit out income and cost basis for your BTC?Go...

### Reply 1:
Why would you want to help a competing currency, instead of your own? One of the properties of Bitcoin is that is pseudo anonymous, and with a little bit of advice from a tech person it is anonymous.Plus the IRS ruling it is illegal on several counts:1. The ruling is retroactive.2. It states you are not allowed to have a competing currency against the dollar which is contrary to the constitution.3. It challenges the FINCEN ruling, FINCEN says it is money, and the IRS says it is property, it obviously can not be both at the same time, it also challenges the state of NY, since FINCEN was first I would guess that unless the ruling of FINCEN is ruled void, then the IRS ruling has no standing. I am not a legal expert I am using common sense that you can not have contradicting laws.The Fincen ruling was also retroactive, and the victims were Mtgox, Mutum Milligium, and Dwolla, and everyone that used those services.If it is property why do people that exchange large amounts of bitcoins get money laundering charges if it is not money, why does FINCEN requires an MSB license if it is properly, will the IRS require a PSB "" Property Service Business"" license?Charlie Shrem got falsely accused <rest of post truncated>

### Reply 2:
Do you really think that paying taxes on income you get means you are supporting one currency over another? And what currency is mine? I do not make claim that I ""own"" the US Dollar nor Bitcoin as a whole. I do ""own"" some of each. I think the fact that some transactions could be considered anonymous is fine. I do not think that all transactions are anonymous. With a ""public"" ledger, and some hard work a lot of what you think could be anonymous is not anonymous at all, and if you try to keep it that way you could have a ton of work FOREVER to make sure that a transaction cannot be linked back to you. I think you could make BTC transactions totally anonymous but it would require a lot of effort. I am not doing anything that I think needs to be kept secret. Doing purchases online without the need to give up my credit card number, expiration date, and secret code on the back of my card makes BTC plenty anonymous for me. No one can use that data to take more money from me. I am not asking on my OP if you think the ruling is legal or not. There are plenty of people who think the IRS as a whole is illegal, and plenty of those people are sitting in jail because of their belief system. By t<rest of post truncated>

### Reply 3:
It's in development and will be in <link> hopefully by end April, along with a tracking service for purchasing.

### Reply 4:
reply:I would follow the path of Satoshi, if you read his paper you will understand that not only he was very smart, he was brilliant, a true genius, and that is something we should all have a very deep respect for.Bitcoin has a purpose and in my opinion we should do the best to keep politicians out, bitcoin is very resilient but it will take a huge teamwork to keep bitcoin under our control. The goverment next step is most likely going to try to alter bitcoin so that is not anonymous, and make it inflationary, that is something that we must never allow.I would hope that the IRS would revise their ruling and make it so that bitcoin gets treated equally to the dollar, so the playing field is leveled.

### Reply 5:
So again, I appriciate your opinion but this thread is not one that I started to debate these issues, please feel free to start a new thread. I am looking for meaningful ways to track my mining efforts in order to comply with the IRS notice.But since I cannot help myself a little bit I will challenge your thinking. Great thing about america is we can each have our opinion and we can each share that opinion.IRS could have done 4 things in my mind. 1. Ignore BTC all together. You are really dreaming if you think this is a possibility.2. Deem BTC as property. (best option imho)3. Deem BTC as a foreign currency4. Adopt BTC as official currency of the US - right! Stop that dreaming again!Have you looked at what would be required of you if this was a foreign currency? Have you looked at what you would be taxes at? And looked that it could be counted as ordinary income? you are a US tax payer yes? If not why are we debating at all. here is a link that breaks some things down for you: <link> fungibility that we need to protect is that of the spendability of each coin, regardless of its history. Say you get your first BTC, it was used in a silk roads transaction so the government came and s<r<rest of thread truncated>
",[]
10643,"Date: 2017-10
Topic: [SCAM] Foxminers?
### Original post:
An ad for a 75 TH/s miner popped up today from a company I have not heard of before: FoxMiners, LLC <link> looks like they released a press release today announcing the pre-sale of their equipment with no ship date mentioned. The product sounds...unusual: It hashes both Bitcoin and Litecoin. Its efficiency is about 5x better than an S9 on SHA256 with a 28nm chip. Thoughts?

### Reply 1:
Part 1 of a scam is collecting the moneyPart 2 is designing the system and covering your tracks to make sure no legal authorities can find you afterwardsGuess we'll see how good they are at part 2 over the next few yearsPeople are just too greedy for a quick buck and will pay off scammers. If it didn't work at least some of the time they wouldn't do it

### Reply 2:
Reads to me like Jonathan F. can wait to get his hands on U$30K worth of BTC.<link> California it's common practice to declare that you accept bank transfers on your website but not for real.

### Reply 3:
So Bitcoinist.com decided to do an interview with that fraudster. According to some inside info this is what he said about me:""Bitcoinist: What is your reaction to articles such as this one from The Merkle which claims ""nothing about Foxminers is adding up"" and that the company is ""offering miners that are seemingly too goo to be true""?EB: We have reasons to believe that TheMerkle take funds from one of our competitors to use defamation words against us, also we have some information that they paid reviews and forum users to do the same and we will drop them on public soon.They claim to visit our headquarter in Los Gatos which is a lie, nobody visit us from TheMerkle, but they prefer to visit Brenda home address and verbally abuse her, she said that they act like mobs forcing and hitting the door, screaming ""scammers"", Brenda ask them who are they and they said ""you think a C&D latter will stop us from take off your mask, you don't know who you deal with.She desperately call us and claim help, she thought someone trying to hurt her and she was crying on the call, we told her to call police and to stay inside and keep the door closed we are on the way.Of course she call police but b<rest of post truncated>

### Reply 4:
<link> submitted along with the full email header where he pretended to be a lawyer. That in and of itself irrefutable evidence of IMPERSONATION FRAUD, a Felony in California.I urge you to submit a report as well as that will get their site taken down faster.

### Reply 5:
Chic gonna cry wolf now? Its her fucking name on it. Show someone a product, or stfu.Scrapp' out

### Reply 6:
<link>

### Reply 7:
Wait a second. If you call this number: 408-877-8345 (which is their support number supposedly)Listen to the voicemail it says UFOminers.com!!! He didn't even change the voicemail to foxminers but left it at ufominers. We are dealing with a serial scammer here guys.

### Reply 8:
Quick aside, themerkle. Would you be interested in penning an article on your mag detailing BitPay operating as an exchange in spite of only having a license to operate as a third-party payment provider?<link> the same phone number is Roni Meron seen here as the model in red: <link> (sorry for the cache but the site was taken down for reasons you'll soon see why)UfoMiners Address: 6390 W Cheyenne Ave, Las Vegas, NV 89108

### Reply 9:
I've spoken with Bitcoinist and me thinking they were going to tarnish my reputation like that was a misunderstanding. I should have known they wouldn't post libel about us. I also shouldn't have posted this interview on this forum as I had no permission to do so. It is too late now but I just wanted to get it out there that Bitcoinist did nothing wrong.

### Reply 10:
<link>

### Reply 11:
Except back a bunch a bullshit.Am I held liable now?Scrapp out'

### Reply 12:
*** Foxminers LLC If someone buys this miner without a well-known and trusted Forum User 1st getting one for doing a review and posting it here then well, you have been warned ***Love the last 2 lines in the ""interview"":And how did Panda, not to mention eBang and Hotmine resolve peoples suspicions? They accepted known reputable peoples offers to do a review of the equipment plus started their campaigns by demonstrating the gear at tradeshows. Ya know? Real hands-on proof.As a business plan, blitzing the media without a single shred of physical evidence of their Miraculous Mining gear ever existing (much less being possible with foreseeable tech looking out a few years) is just plain stupid -- or of course the blatant proof of a scam in-progress.

### Reply 13:
Here on this front is a ""national sport!"" To mark everything that is new for fraud.Many things that were labeled as frauds were true ... eg, Baikal miners and the like.Do not let all vendors hang in one sack1I know I can find a cheat, but why do everybody accuse me of being a scammer

### Reply 14:
I'm not a foxminer, nor will I be!!!!I have expressed my mind no mor<rest of thread truncated>
","[
  {
    ""hardware_name"": ""75 TH/s miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Baikal miners"",
    ""hardware_is_owned"": false
  }
]"
2787,"Date: 2014-01
Topic: [Group Buy 1] Avalon 200Gh/s 2.2BTC INC SHIPPING
### Original post:
If i may ask a question,Below are the stats of the avalon 2 miner.160 x 1.3 = 208Gh/s, 160 * 2.05 = 328Watts,It states that the power draw is 950Watts?Thats almost 3 times as much...Anyone has some real out of the wall values for power use?Code:Avalon2 chip <truncated> Speed1.2-1.4 GH/s at a standard 0.9V, with 2.05W pre GHsLow power consumption rate 1 GH/s at 0.8V with 1.5W pre GHs.Overclocking speed 1.5-1.6 GH/s at 1.0V with 2.5W pre GHsChip160pcs of Avalon 55nm asic Material of <truncated> force 200GH/SSingle chip <truncated> modules routing control + FPGA + 2 set of calculation module+ heat sink, power supply + chassisTwo modules with powerBTX - 650 sd module power supply

### Reply 1:
whats the power draw of the 1.2 TH?does it stay under 3kW? (breaker limit)

### Reply 2:
Does anyone have ordered over here?Anyone done escrow or has a tracking number already?Cheers,

### Reply 3:
Photos from the factory testing room:4.6Th/s waiting to be shippedChina new year fast approachAll you haters off the new miner can go suck one - I don't set the dates for shipping of the 1Th/sDo you see any other company shipping in stock 1Th/s models right now ? NO Just you wait till after China new year big plans to come from these factorys

### Reply 4:
Interested in one of the 200Gh/s units. PM sent.

### Reply 5:
Interested in 200Gh/s, also send a PMWhen can you ship and can you do escrow?Cheers,

### Reply 6:
no offence - this speech would go better after chinese new year, when there will be sales, happy customers and on-time delivery with your supplier in this topic.Atm there are a lot of disappointments with these small avalon2 assembly companies - they promise a lot, not shipping on time, not having stocks in reality, slow assemblying, etc.i would be also interested in 1.2 model - so when you will get more tech details, please let us know.thank you,

### Reply 7:
Interested in one 200Gh/s PM me. Escrow?

### Reply 8:
I can't agree more with you to be honest, when the day comes when I can delivery with a good service my customers will be happy and I will be happy, will keep you posted

### Reply 9:
pic 2 on that test floor is positively terrifying. The very idea that people will be paying thousands of dollars for equipment being housed in what looks like an abandoned asylum is sickening.

### Reply 10:
Maybe the asylum is close to the power plant

### Reply 11:
I pmed you crover

### Reply 12:
If a 200gh unit is paid for today. How long until it is in transit to me?

### Reply 13:
Power usage for 200 GHS close to 1000 watts?

### Reply 14:
Could the OP please reply to some questions via thread or PM?I already wanted to place an order 2+ days ago and havent seen any reaction yet.So i`ll list it here again:If ordered today, when do you ship?As orders can only be placed in BTC, can you do escrow?Cheers,

### Reply 15:
anybody ordered 200ghs unit and got one?

### Reply 16:
now that is funny. never heard that statement before.

### Reply 17:
Evening folks, I have been off sick past few days and not been replying sorry, about to reply to all emails and orders plus order updates to everyoneThanks

### Reply 18:
I have had loads of people ask to order then start to make order but don't reply back to me, still working my way though PM's and emailsCan submit tickets on website soon and also shop will open soon with many payment options just linking it all in the nowThanks

### Reply 19:
Would like a 200gh unit and some ideas as to shipping time. PM sent

### Reply 20:
Its like someone's never been to a developing country or a place with a variety of socioeconomic conditions...I don't care where they host the rigs as long as they don't get wet or too dirty. But time for the real question:Has anyone received a unit yet - what was the delivery timeline? Any chance of PAYPAL being accepted in the near future?

### Reply 21:
Is the OP also BTMine?

### Reply 22:
Update 15/01Will push out a document to all people that have made a request for an order - Fill it in with all details - I sent to factory they provision once order is ready then you make paymentNo deposits just one payment when your miner is ready to leave.Still doing miners with no PSU - on the document I will create optionsI would like to have all orders processed by tonight and tomorrowThank you

### Reply 23:
if anyone is willing to sell me one via PayPal, I'd offer you +10% of the item cost, shipped to me here in the UK. It would have to be a PayPal invoice and I'm happy to chat with you to offer some reassurance. I simply don't have that sort of BTC available.thanks.I have purchased expensive items using PayPal before, ideally, take a short video of the product functioning, show it going into a packaging box + tape on it, then to courier and i'd do the reverse when it arrives here, take a photo of it complete after courier drop off (DHL don't let me show their face, have tried!) an<rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon 2 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1.2 TH"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""200Gh/s units"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1Th/s models"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""1.2 model"",
    ""hardware_is_owned"": false
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]"
16801,"Date: 2011-07
Topic: Long Poll client - how to implement?
### Original post:
Hello,simple problem. I work on a mining pool / proxy combo for my own use.I now start dealing with long polling and id just will not work.Why? I am submitting the same url I am getting and submitting work to, just as a GET instead of a POST, but I pretty much always get a 400 / Bad Request back.I am having the following <truncated> <truncated> Basic <truncated> <truncated> non-LP part works fine, passwords etc. are all set.What am I overlooking? Possibly something stupid, but I just can not figure out what Regards

### Reply 1:
need more info..What miner you are using ?Did u setup your own pool, or are you mining at btcguild ?

### Reply 2:
Are you sending it to the same URL as the regular getwork requests?Look at the X-Long-Polling header in the responses to your regular getwork requests. They tell you where to send a long polling request, which may be a different URL.

### Reply 3:
You don't show the 'GET' line. But if it's anything other than ""GET /LP HTTP/1.1"", that's your problem.For the reason the post above me explains -- see the ""X-Long-Polling: /LP"" header in the error reply.By the way, you pasted your real Authorization. You better change the password for that worker before evil malicious bastards mine for you.

",[]
4817,"Date: 2013-05
Topic: [ANN] ASIC Design & Verification Engineers Job Post - xCrowd
### Original post:
Stickying per request, I don't see any harm in giving this a day or two of sticky. If anyone has a reason not to, please feel free to PM me.

### Reply 1:
Okay, enough sticky.

",[]
3944,"Date: 2017-03
Topic: [CANADA - SIDEHACK] Sidehack 15gh BM1384 stick
### Original post:
How do we want to keep this straight? Should your GB guys PM me with their payments, or do you want to collect everything in a CGB-specific address and send it on in a couple weeks? I mean unless the Canadian market really takes off, I probably won't have an issue with the ""cashflow"" of this group's quantity of sticks.

### Reply 1:
As you wish. Wanted to help for the cahsflow if it was needed. I could also collect everything and send everything at a fix date with the shipping price too. Your call honestly.

### Reply 2:
That'd probably be easier, since it'd only require one person to keep track of everything instead of both of us.

### Reply 3:
Perfect will edit my previous post than.

### Reply 4:
You can start sending payment at the address in the OP. Send the price of the stick only. 30$ per stick.I will than ask for the shipping cost when I receive everything. Please pm me your address where you want it to be shipped and the txid.Thanks

### Reply 5:
I will take one stick.Thanks

### Reply 6:
Don't forget guys, I need the payment when you can. I will be aways from home for the holiday. So will manage everything on my return. Be back the 5 of january.

### Reply 7:
Back from holiday! Don't forget to paid guys!Happy New Year to all!

### Reply 8:
Add qctechno to the queue for 4 sticks taken in trade for S5 boards.

### Reply 9:
Done!

### Reply 10:
Interested in 3 of them. In Hamilton Ontario. Would buy right now if you want lol.

### Reply 11:
Added please send the fund at the adress in the OP.

### Reply 12:
My funds are locked for 31 hours, will send the 60 after that

### Reply 13:
Hello,Count me in for 5x 2pacs and 1xBiggieBest regards,

### Reply 14:
Added the 2pacs. The biggie will probably be on another thread, I need to check with Sidehack.I also need the payment.

### Reply 15:
The price of the stick is 30$ USD. Please verify that you transfer the good amount.

### Reply 16:
<truncated> again for organizing this man!

### Reply 17:
Add 5 to the list for a guy named patx. We'll have to figure out the shipping costs I guess, but he paypal'd me for the sticks.

### Reply 18:
DoneWaiting for takagari payment and I will send you all the fund.

### Reply 19:
<link> for delay

### Reply 20:
Payment send to Sidehack : <link>

### Reply 21:
/Highfive Thanks !

### Reply 22:
Add one for MrZoidberg.

### Reply 23:
Is this still available? You have my attention

### Reply 24:
Please verify with Sidehack since I already did the payment for the batch. If he accept to add you, there is no problem on my side.

### Reply 25:
15GH seems to be the bottom end of the miners speed

### Reply 26:
Not really sure what you mean by ""bottom end"". I believe VH has programmed the driver to take down to 6.25MHz - about 340MH. By that chart 15GH would be about the 5W point.

### Reply 27:
I just mean in theory the miner could do 27GH if it was supplied 10W...which is pretty bloody awesome for a little usb miner

### Reply 28:
Any ETA on the shipment?

### Reply 29:
Still waiting for some answer drom Sidehack.Some of the first buyer got them so I guess we will receive them soon.

### Reply 30:
Chalk up another 3 for Canada. I think that makes 23 right now.

### Reply 31:
Added and yes we now have 23 Sticks for Canada!

### Reply 32:
I missed it i think... Would like to buy a hub for maybe 5 of these in canada?Best place/option?

### Reply 33:
Just received all the stick! I will repack them and ship them saturday.

### Reply 34:
o very nice! i have been patiently awaiting this announcement! i have now successfully clocked 2 of 3 of my old compacs into total oblivion so i need some new victims toys!I will make sure to have my postbox open! ;p

### Reply 35:
Great ! Let me know how much I own you for shipping my sticks home.Waiting your PM

### Reply 36:
Please goup check your private message. All the information are there for the second payment. Cheers!

### Reply 37:
Received my 2PAC's today. They look great. I will test it soon.Thanks Valkir

### Reply 38:
Got my sticks today, they look great and shipping was immaculate! WooT!!!!!Doing some testing now

### Reply 39:
Pics or it didn't happen

### Reply 40:
haha ;p almost 20Gh/s at 175mh/z, no cooling, and just thrown in my PC usb port for now till i get a new hub i blew mine hahai have it set to eobot, gonna mine some hashpower with my hashpower! hahaha

### Reply 41:
^Thanks! That's awesome. It brings back memories of the good-old mining days when the home user stood a chance.What are you doing with them - solo pool lottery? I'm not familiar with eobot...

### Reply 42:
well first of all, wow! nice new sig!, thats fancy! and ya eobot is just a US based cloudminer ;p i was just trying to think of a way to accelerate a chance in hell at ROI with these sticks, so it seemed like a fun experiment to check out haha. Im using them to mine ""virtual S9 Gh/s"" (like hashnest) , they wont do much but <rest of thread truncated>
","[
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    ""hardware_name"": ""Sidehack 15gh BM1384 stick"",
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    ""hardware_name"": ""2pacs"",
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    ""hardware_name"": ""Biggie"",
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]"
3237,"Date: 2014-03
Topic: [OPEN] Gridseed hosted(or not) groupbuy 190$/unit or 150$ with hosting
### Original post:
Could you comment more on this?I'm just starting to look into these Gridseed miners and not sure what they require.Do you have any more information on what this 'controller' is?Also, do these have a standardized power connections? or are there adapters available for connecting to a PC PSU?Thanks in advance.

### Reply 1:
do these come with controller and power adapters?

### Reply 2:
Miners are USB, each 10 pieces package include:10x gridseed usb miner1x controller10x usb 2.0 to micro usb cable1 x usb hub 10 port2 x power supply 12V 30A10 x power cable (2.5-5.5mm) plugless than 10 shipped unit include only the miner.if you buy 10 pieces you get all the package.

### Reply 3:
Having just been ripped off in another GB, I have to be a little more cautious this time so please excuse my impertinence in asking but I must: (1) Can you have someone who is well known and trusted here (maybe someone from the escrow list) verify your identify and post here. We do not need to know all the details, but having someone verify your identify, job and address and maintaining that information in escrow in case there is a scam .. well that at least makes me feel comfortable. Many other successful GB founders have done this and I now consider it a must have for myself at least.(2) Please provide details on your hosting environment. Will this be a home operation? Or do you have a commercial setup?(3) Do you have any experience with managing a hosted GB before? How do you know you will be able to do it (it is a LOT of work, especially if there are hackers on you with DDOS attacks, power issues, miners that constantly need resetting as these do (I have 10 now, and I spend 30-40 minutes a day babysitting them or else I lose hashing if I don't), etc.)(4) Your prices seem really low relative to the market. I am concerned because there was another GB that ultimately foundered bec<rest of post truncated>

### Reply 4:
Hi eightcylinders , i'm sorry for your loss.1) I don't know anyone with those characteristics, if there is any voluntary i will be glad to send him my info.2) Hosting will be at my office, i already bought 12Kw+ of energy contract.3) I already runned mining rigs before and i'm not alone in this adventure: 2-3 lovely and trusted guy are helping me 4) My chinese contact/supplier is a very kind guy and he obtained great prices.

### Reply 5:
Im in for 10units in hosted option. <link>

### Reply 6:
Reserved. Now 1 package worth 1800$ instead of 1900$, last 50 units to reach 200!

### Reply 7:
Down for a ten package containing:10x gridseed usb miner1x controller10x usb 2.0 to micro usb cable1 x usb hub 10 port2 x power supply 12V 30A10 x power cable (2.5-5.5mm) plugThanks.

### Reply 8:
you have PM.

### Reply 9:
Replied

### Reply 10:
For the hosted units, is it $150 in addition to the cost of the unit? Or is it $150 ""out the door and hashing"" for the hosted unit?

### Reply 11:
It is 150$ each hosted unit, 5% fees.

### Reply 12:
I'm very interested in 16piecesHowever, I'm a bit worried about the deliverydate.Do you have experience in international trading, customs, ,taxes, etc?Would you consider escrow?

### Reply 13:
PM sent

### Reply 14:
PM sent.

### Reply 15:
Hi Mymine,I work since 2009 like employeer for an import/export company and we work mostly with China and asian countries,i guess i have the right experience to make things work.About escrow i can't use cause i need to collect money and pay <truncated>

### Reply 16:
Reserved 20 Gridseeds with shipping form UK. Confirmed Thru PM.

### Reply 17:
1 Gridseed (5 chips) for shippedTX: <truncated>

### Reply 18:
Thank you, remember to PM me your shipping info.

### Reply 19:
Where can I pickup the order personally?My cousin is in the UK now and it could save You some trouble with delivery.

### Reply 20:
London.

### Reply 21:
About escrow i can't use cause i need to collect money and pay gridseed.Hmmmm....

### Reply 22:
Hmmm? How could i use escrow if i have to send the wire transfer to gridseed before miners receivement?

### Reply 23:
Okay, did I miss some other feedback from others that could vouch for any prior deals with you?Just looking for some positive reputation sources (eBay, etc) we can go on....thanks!

### Reply 24:
Bump...last 19 units to reach the goal.

### Reply 25:
Bump..last 9 units to reach the goal!

### Reply 26:
Hello,when there will be not more units available, how many days will you take to pay the order and close this batch?

### Reply 27:
When units end up there will be a 48hr payments countdown to collect the money and than i'll pay gridseed.

### Reply 28:
well done!

### Reply 29:
Great. But list shows only 66 units ordered...

### Reply 30:
How you can read in my first post:""I will buy 100 units by myself, so min. 100 units. to reach the goal, max 400.""Other 45 units are reserved by some <truncated>

### Reply 31:
You front it o<rest of thread truncated>
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    ""hardware_name"": ""controller"",
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    ""hardware_name"": ""usb 2.0 to micro usb cable"",
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    ""hardware_name"": ""power supply 12V 30A"",
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23019,"Date: 2019-07
Topic: Proxy for antminer s9j
### Original post:
Dear bitcointalk memberI want to run my antminer s9js with some proxy... which proxy do you recommend and how must do it? I want to use proxy to my ISP internet company cant find my location for using these miners.Thanksplease explain with details

### Reply 1:
I think you need to build a pfsense box to be able to use a custom proxy. pfsense box will be your another router where you can set custom firewall and proxy.Alternative if you have a good router that you can set up a proxy I suggest you buy residential IP or socks5 proxy.There is someone asking this question here on the forum look at this and maybe it will help you to set up a TCP proxy for mining <link>

### Reply 2:
I don't think ""a proxy"" is going to help you with that, perhaps you are thinking vpn or such. Hiding yourself is not easy as you might think, perhaps you can achieve something using Tor.In mining normally proxies are used for something completely different, such as consolidating all your hash rate to look like its coming from a single unit (or simply make less (but larger) connections to the pool).Besides in hostile countries miners are usually caught by electricity consumption.

### Reply 3:
I need some method that My ISP (Internet Service Provider) doesn't find my location of usage their internet ? there is n't any method ?!

### Reply 4:
I just told you to use Tor... Set up a router with tor and have your LAN use that, or a vpn or whatever you like. Your ISP can tell you are using Tor, but they can't tell what for... In countries like China they can visit you if they want to inspect your suspicious encrypted activity, so in there you have to disguise it even more.It should be possible with a couple of S9s, but not 200...

### Reply 5:
What router you are using? I found some method or a guide on how to set up a VPN on the router there are 2 ways to set them you need to choose either L2TP or PPTP. Look at these 2 sample guides below.- Set up VPN on D-Link Wi Fi router- Set up VPN on TP-Link Wi-Fi RouterThese guides are for D-link and TP-link routers connected to your internet/modem.This is alternative from what I mentioned above and this is easy to do than making a PFsense box.

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    ""hardware_name"": ""D-Link Wi Fi router"",
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    ""hardware_name"": ""TP-Link Wi-Fi Router"",
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10517,"Date: 2017-09
Topic: H2U miner 90Th/s
### Original post:
<link> apparently buys a box capable of 90TH/s, running almost silent and consuming only 1200 watts. Has anyone heard of this before? It kind of blows bitmain out of the water. Apparently in stock and ready to ship. No I'm not one of their salesmen, just really amazed that this thing exists. Why would anyone buy a bitmain box when you can get one of these? Serious question!OOPS: Just found out this is a scam apparently. Is there any way I can delete this topic?

### Reply 1:
GREAT! an ALL-IN-ONE scam.Based on the specs these miners kill the market. Very impress noise suppression.

### Reply 2:
Wow, that's amazing, it sounds almost too good to be true!Oh, wait. Not sure it's possible now that people have actually responded; you might talk to a moderator, though it's probably simplest if we just allow it to die peacefully until someone revives it with a necropost a year or two from now saying how it's so behind the times compared to newer technology... 14nm chipset ASICs might very well outperform our current ones by a handy amount, and at the current pace of technology it won't be too long before we're working with 8nm chips. Anyway, not really the point, we're getting into mining speculation. Glad you spotted the scam before sending them any money, and good luck finding a reliable vendor for mining ASICs who isn't constantly sold out.

### Reply 3:
Can you elaborate where you found out this is a scam?Not one of their salesman but you could be working for bitmain.

### Reply 4:
It is a scam.You can make a picture search with Google from the team.This are no real persons.Look at this link: <link> to good to be true.

### Reply 5:
idiot...Does the name UFO Miners or Phoenix Miners or FoxMiners ring a bell? This site and all of those other scammers use the same damn pictures of 'their' miner.

### Reply 6:
There's no need for debunking when it's obvious such a miner would be instantly sold out and probably not even sold to the public if it hashed at such a speed and at such efficiency. Add on top of that the ""generic"" miner pictures and you have a solid mining scam site that's just the same as the thousands on the web.Deleting this (or moving it to Archival) would be either deleting the first post or moving it and locking it in the bottom right of the thread.

### Reply 7:
What's even better is that they offer a 130 TH/s miner for just $2000 more than the 90TH miner. All in a box just a bit larger! Or you can get a rack with five of 130 TH miners (i.e. 650 TH) for a mere $30000. Hurry, this offer is for a limited time only. Operators are standing by......I am sure they would be happy to take actual cash, or Bitcoin.

### Reply 8:
The scariest is the AS SEEN ON part.Someone should do something about those, publishing articles that gives credits to the scammers.Dont they verify the infos before publishing craps?

### Reply 9:
But they do offer free shipping! Lol

### Reply 10:
The sites that write these articles call these people clients not scammers.Vetting them = not getting paidNot vetting them = getting paid

### Reply 11:
Too good to be truth.

### Reply 12:
100% scamIf the ridiculous claims weren't enough to convince you<link> is based in Romania... Gypsies

### Reply 13:
If you google image search the people off the about us page all of them are just pulled off the net and none match up with the names. Like this one IVAN CLAESPRODUCT MARKETING DIRECTOR <link> pretty nice website for a fake. Taking it to the next level for sure.

### Reply 14:
for those of you who have said a scam, have already proved it? this is a great idea, why do not we support it?

### Reply 15:
Because we don't want to lose our money to scams and vaporware. Part of not being taken advantage is to be skeptical of outrageous claims like those made in this site. Of course you can send your money to them, but it seems like a high risk, low reward activity.

### Reply 16:
There are many here who's careers are in the semiconductor business not to mention all you have to do is a very quick search of what the current technology node - 16/14nm is capable of and what limits it. These charlatans are trying to say that they blow the doors off of current tech using 28nm which is from 2014... The performance they claim was physically impossible then and is now. Even the eventual move to 10nm and lower in the next few years would not approach what they claim.Try understanding the true technology our miners use and it is very very easy to see through their technobabble and say MASSIVE SCAM!

### Reply 17:
Because ""we"" are not idiots. Prove us all wrong by buying one or more of these unobtainium based units and report back laughing at all us morons who didn't buy in...

### Reply 18:
DUDE THANKS SO MUCH FOR THE INFO I JUST BOUGHT 4 OF THESE! I owe you one man, your awesome!

### Reply 19:
I love only free shipping part. Other specs are not for me i need 100000th for that price to be a fish.

###<rest of thread truncated>
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  {
    ""hardware_name"": ""bitmain box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""130 TH/s miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""rack with five of 130 TH miners"",
    ""hardware_is_owned"": false
  }
]"
6804,"Date: 2013-12
Topic: Length of Ethernet cable messing up blades?
### Original post:
I can't have cabled running across the middle of my living room so I got a 100ft Ethernet cable. My blades were working great all afternoon, now I get ""clean_jobs=false"" and they won't pickup any work. Anyone know what gives here??

### Reply 1:
And now using the cable I had before I'm still getting the same error. Man, everything was working perfectly for several hours, wtf.All I can think is by swapping the cable and shutting down the proxy won't let go of some jobs. Just like when I start mining it takes time for the server to ramp up my hash rate, maybe it takes time to dump jobs. I dunno, this forum has been seldom helpful unfortunately. If I have any luck I'll post back, plan right now is to just stop, shut down everything, and drink a beer- this blows.

### Reply 2:
Decided to run a crossover cable to my switch and bypass the router, now it works. Whatever the issue my router/switch was having problems with the additional cable, and then it was tripped into ""clean jobs = false"" with the shorter cable that worked earlier. Anyways, found a workaround using less cable, I'll go with it and be happy.

### Reply 3:
thank you for posting updates. I have sorted mine by switching off wifi.

","[
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    ""hardware_name"": ""100ft Ethernet cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blades"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""proxy"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""crossover cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
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]"
6985,"Date: 2014-01
Topic: DIY Custom Open Hardware & Software Guild (Call for Ideas)
### Original post:
Situation There are millions being spent in Custom Hardware and a wide range of developers, users and suppliers within this very forum. This is a fairly young and immature marketplace with a rapidly changing range of products. At times users and hardware makers are working in tandem very well but at other times there is discord. PurposeThe CHA would be an open membership association set up to promote ethical business practices and provide unbiased consumer information so that users have the necessary information to make informed decisions about product purchases as well as learn about new and potentially disruptive businesses, technology or regulations that could have destabilizing effects directly on the Bitcoin mining <truncated> providing ethical guidelines to custom hardware vendors the community and the vendors can work to improve the Bitcoin economy and more effectively protect the network by getting more mining power online faster while hopefully mitigating rapid obsolescence before the custom hardware reaches the consumer. By providing unbiased and clear information consumers will make better use of their resources and avoid protracted waiting times to get a return on their<rest of post truncated>

### Reply 1:
I think this is more of a seed for the DIY to start from. I am hopeful that we wouldn't need to be dependent on a ""chip"" to get things going.An actual open source ASIC chip would be a great starting point but there are obviously some easier pathways to get started on this. Something like the Klondike mindset and using a off the shelf chip to start with.In terms of ""membership fees"" I see it more as sweat equity. People can put in time, money and work to the development of projects for not just hardware but software etc that the whole community can use whether they are members or not. Having something that is more grassroots miner built and funded as opposed to commercial would be a great place to start. I think also that BitCoin conferences where the DIY Open Source Hardware / Software guild could interact with the community would also be great.There are some great ideas for curecoin's using our hash power for other things besides BTC. What will happen with those million dollars worth of miners when they become useless? I think a guild could work on that and provide alternative uses for this huge wasted resource that is going to occur. Bounce some ideas here... then when we get eno<rest of post truncated>

### Reply 2:
... an idea which needs to be pushed forward.

","[
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    ""hardware_name"": ""ASIC chip"",
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  },
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    ""hardware_name"": ""off the shelf chip"",
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    ""hardware_name"": ""miners"",
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632,"Date: 2013-06
Topic: [Group Buy] Avalon ASIC Chips (SebastianJu) Batch 6: 3404 ASICs gone 53404 sold
### Original post:
Sorry for the delay SebastianJu... I just needed 5 more chips added to my first buy! That should be a total of 40 chips.twisted; 5; 0.43; <truncated>

","[
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]"
5348,"Date: 2013-06
Topic: Has the K32 / K64 actually been designed yet?
### Original post:
I cant seem to find any hard references to it yet...second question - can you string / chain K16's together ? thanks!

### Reply 1:
There really is no K32/K64 per se, they are just K16s connected, same design.

### Reply 2:
There is a I2C bus to chain multiple K16 together.

### Reply 3:
Any idea what is the maximum number of K16 boards that can be chained together with the I2C bus to a single USB connection on the controller?

### Reply 4:
bumphow are the K16's chained together? is there a male/female port configuration?

### Reply 5:
Check out this: <link>

### Reply 6:
Here is my sample design of 4 x K32 (4x2xK16) in a box

### Reply 7:
Oh wow, I initially read the 000-112 as 000-012.So there are 113 addresses on a I2C 7 bit addressing that is planned for the K16. I like it.

### Reply 8:
K1, K16, and K64 all possible and ""designed"".Yes they can be K16s and K64s can be chained together. Klondike Lego or Klego.<link>

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    ""hardware_name"": ""I2C bus"",
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  },
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    ""hardware_name"": ""USB connection"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""4 x K32"",
    ""hardware_is_owned"": true
  }
]"
12634,"Date: 2013-10
Topic: Error supressions/usb detection surpression question
### Original post:
Apologies for noobish question.I have been using cgminer to run my 6 usb block eruptors for a few weeks now with all being great. Now that I have finally received my BFL little(which also performs perfectly well, running with bfgminer for now) my cgminer keeps reporting:Code:USB init, open device failed, err -12, you need to install a Windows USB driver for - BFL device 5:1But I already have all the drivers installed and the device is running just fine in another window. My question is how do I stop cgminer from searching for or reporting this device, as it makes for messy on screen monitoring of my block eruptors.The line that initializes the block eruptors <truncated> -o <truncated> -u myUserName_com9 -p 1234 ---icarus-options 115200:1:1 --icarus-timing 3.0=100 -S //./COM9Apologies again for a noobish question! Many thanks in advance for any suggestions!Myrdd.

### Reply 1:
You need to run Zadig and install WinUSB for that device.

### Reply 2:
Add""--usb BAS:0""It is covered in the readme under Advanced USB Options

### Reply 3:
Ffab thanks! I did read the readme (badly) and saw those options but it didnt stop the reporting error. I'm guessing I have to install the driver you mentioned first and then add that line. (My miner is working fine so I dont really want to start messing with drivers as I'm sure windows will mess things up for me if I did!) So will have to just ignore the error repeating. Thanks again! Myrdd.

### Reply 4:
Wise move. I'm pretty sure that if you installed the driver, you wouldn't be able to use the setup you are using since it would replace the driver you are using. Ouf of curiosity, though, why don 't you want to install the driver and use the device in cgminer (even if a separate instance) instead of running two different miners?

### Reply 5:
As my block erupters were working in cgminer I did try that first, but with no luck, probably windows fault, and bfgminer worked straight off. Now I know how to fix it, I may try cgminer again when I get a little time. Guessing it may hash a little better?Myrdd.

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5968,"Date: 2013-08
Topic: Consolidated BFL Board Development Thread
### Original post:
I'm starting this thread as a place where people can check in and collaborate on the development of a board (or boards) that can use the BFL ASIC chips. This is not a group buy or a lets-bash-BFL thread. Once a board design is established, cooling issues and case design can be discussed later.Note: I'm only starting this thread to organize all efforts into one place. I myself can't really design anything. I'm not an EE, and I don't know what I'm doing. I will help out where I can, tho.Ok here's the information we have available:BFL's Order Page. That page also has some basic specs:Those reference documents mentioned have already been released. The Jalapeno's board schematics and PCB can be found HERE. The SC Firmware Source Code was release HERE. If you have any issues downloading those files, I can send them to ya by some other means.I see we've got a few people already working on designs, but if you guys want to coordinate here, that would be great!

### Reply 1:
I want to just post my initial ideas and tired ramblings. This really doesn't have any bearing on the rest of this discussion.The BFL chips are a lot more dense than Avalon or ASICMiner chips, for both power and heat, cramming 4GH/s into a 7.5x7.5mm die. A board like the original Avalon or K64 where the chips are all spread out and share one giant heatsink prolly wont work very well. I mean we could put a little VGA heatsink with a tiny fan on each individual chip, but that gets expensive fast. A giant heatsink like the original Avalon won't work, because unlike the Avalon, if one chip isn't making good contact with the heatsink, it will overheat. For power, those K16s use an estimated 32W for 16 chips, while a Jalapeno uses that much for 2 chips. If we wanted a full 16 chip board, we're looking at ~250Watts. Now BFL dealt with the heat limitations by grouping all the chips up in the center, and using one heatsink (with a large enough base) to cover each group of 6/8 chips, and cool them all at once. They're using a thermal pad instead of thermal paste to account for the potential for a height difference, although it is such a small area it can't be that much of a difference betwee<rest of post truncated>

### Reply 2:
If each chip does 4ghs. Why does my jalapeno use 2 for 5ghs?

### Reply 3:
Using GPU setups is a good idea a very useful to GPU miners.On the other hand there will be some limitations.After finishing the Avalon miner design and production (K16,K1, Tbxx) We are going to get into the design of BFL chip based miner.For the moment I ordered 100 chips my self, other 100 ordered in a group buy with me , next group buy is 1/2 full already.I'll be watching this thread

### Reply 4:
simple POWER and HEAT issues ....May be using lower gradesAlso You are not able to make 5 GH/s with 4 GH/s chip

### Reply 5:
If you had paid more 100 US$, for the proposed BFL upgrade, it would be giving you 7 GH/s instead 5 GH/s, with the same 2 ASIC ships...

### Reply 6:
Basically its firmware and a frequency setting. Yours has setting 1 (189mhz) while the chips have a minimum possible mhz of 250 (which is around setting 5). Higher grade chips can clock even higher.These topics are about the firmware and these freq settings:<link>

### Reply 7:
Because some of the chips may not have all their engines working, and are obviously still good enough to make up 5GH/s but might not make 7GH/s.

### Reply 8:
The first minirig 500Ghs has a consumption of 2400w.If its 65nm chips have a 3.2w/ghs consumption. The minirig would have a theoretical consumption of 1600w. This is 50% more

### Reply 9:
The chip itself consumes 3.2W/GHs. The board will be higher than that, and that doesn't include the power costs of running a shit ton of large fans, and then the PSU inefficiencies.Each chip is 4GH/s @ 3.2W/GHs for ~12.8W per chip. Each board has 16 chips, which is 205W just for the chips. Then you add in the voltage regulators (assume 90% inefficient) that's 205W X 1.1 = 225W. Add 2 fans per board (another 10W), power for the board controller and all other various components, and you're looking at 250W per board.Each MR has 8 boards, so that brings the total to 2000W. Then you add in the 18 case fans (9 on each side). Lets assume a typical case 12V case fan, so you're talking 10W per fan, or another 180W total. That's 2180Watts.Then your PSUs are inefficient as well. Even if they're 80PlusGold, they're 90% efficient at max load, which adds another 10% of your total power. 2180W X 1.1 = 2398Watts, almost exactly the 2400W prediction. If you're using 220V for your PSUs, they'll be ~92% efficient at max load, which brings your draw down to 2180W X 1.08 = 2355W, which is again almost exactly what was predicted if you run them off 220V. Hope this answers your question.

### Reply 10:
On 5Gh/s Jal got 2 chip on it and one is dummy chip for balance heat sink.please someone check your 5Gh/s Jal chips if<rest of thread truncated>
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8329,"Date: 2014-08
Topic: A1 28nm Asic miner price down
### Original post:
Our New batch A1 28nm Asic bitcoin miner price is down.2TH/S A1 asic miner in stock. New making. delivery time 1 day after got payment, full 2T to 2.09T1th/s A1 asic miner in stock. Newly making . delivery time 1 day. Full 1T.stock photoPacking photo: Welcome to wholeseller and miner to inquiry.We not offer price there. If you interested, pls contact us.Email: info@winkor.com, <truncated> amanda2007520

### Reply 1:
Nice rigs i wouldnt mind just one of them lol how much do you mine in one day?

### Reply 2:
Email sent. Curious to see if the price is worthwhile.

### Reply 3:
Let me know how it goes if you buy any.

### Reply 4:
hican you post information related to shipping cost, warranty ?thanks

### Reply 5:
2TH/S recently mine 0.052BTC

### Reply 6:
different market different shipping cos. warranty 1 year in buyer charge

### Reply 7:
what price to 1 TH/s miner??

### Reply 8:
how many pcs you looking for? we have discuss for big quantity

### Reply 9:
Just to let you guys know I have purchased 2 miners from them and both work great.A A1 1TH miner and a A1 2TH miner.2TH miner is a frickin noisy beast though!

### Reply 10:
If anyone wants to see their 2 terahash miner in action The hashes are VERY stable.<link> is 2th in a box with minimal setupVery stable hashingHas English UI upon requestSo far, Amanda from Bit-Winkor has been <truncated> loudUI is still basic typical of A1 miners.Doesn't work on P2PoolAir is sucked in from the sides and then blown out from both sides of the miner making it hard to plan for large scale farms since the air is pushed out from all directions.I would recommend this miner if you want minimal setup and a decently powerful rig in a single package and don't mind the noise.

### Reply 11:
whats the price?

### Reply 12:
May i know how many pcs you looking for?Skype: <truncated>

### Reply 13:
i got 1 of this, are any tutorial to configurate the pool, or any image to upgrade the filmware the web interface come in chanise, and yes are noisy xD

### Reply 14:
hi, we don't have impression that you have buy one from us

### Reply 15:
Price?

### Reply 16:
How many pcs you looking for?

### Reply 17:
Price depend on quantity

### Reply 18:
890USD/PC for 1TH/S A1 28NM. full set built in power supply ,RASP PI, 1000Watt power comsuption. Shipping cost will according country

### Reply 19:
And for the 2TH/s?

### Reply 20:
1790USD/PC for 2th/s. 1th/s is more accountable

### Reply 21:
Is there any place or anyone who's selling loose chips?

### Reply 22:
CHEAP!!!!<link>

### Reply 23:
These guys are reliable I've bought 5 miners from them now. 4xA1 and 1x A1 2th

### Reply 24:
still looking for a loose chip or two for experimentation.had one lead but they've not returned PMs

### Reply 25:
You never buy miner from us, pls don't Casually slander

### Reply 26:
Thank you

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    ""hardware_name"": ""A1 1TH miner"",
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    ""hardware_name"": ""2 terahash miner"",
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18697,"Date: 2014-02
Topic: PCIe Riser Cable only working in 1 of 5 x16PCIe slots...
### Original post:
Good morning everyone!Last night I decided to try and consolidate a few mini-rigs that I had and put 4 GPUs on one motherboard instead of having them spaced out between 3 PCs that were set up to mine when idle.Anyways, I built the rig, got the cards raised with PCIe x1 to x16 risers. Everything looked sweet and ready to go, but then when I fired it up the only card that was recognized while on a riser was the one in the PCIE4 slot. I tried the following to no avail:1) Tried switching the risers out to see if the cards would pick up in the other slots with the confirmed working riser2) Tried removing the risers, getting the cards to be recognized in Windows 7, then rising them3) Tried swapping the cards around to ensure that all cards could be recognized in PCIE4 with a riser - they could but no other spot recognizes any card with the risersAfter that, I decided to just try and get all 4 of the cards mining to see how it goes, so I put a card in PCIE1, PCIE5, and PCIE6 and used the riser in PCIE4. Success... for about 5 minutes. Had all of the cards hashing away and then after a few minutes GPU3 got sick, then the computer froze and wouldn't restart. I removed GPU3, got the computer<rest of post truncated>

### Reply 1:
Anyone? Having the same problem with Linux.About to head up to Radio Shack to get some ohm resistors and make dummy plugs, and going to short the PCIe pins A1 and B17. Maybe that will work... but not holding my breath on it. Makes no sense why it would work fine on PCIE4 but no others...

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    ""hardware_name"": ""PCIe x1 to x16 risers"",
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    ""hardware_name"": ""dummy plugs"",
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]"
5169,"Date: 2013-06
Topic: [WTB] Avalon chips in-hand (Any available?)
### Original post:
I am looking for between 30-50 Avalon chips for INSTANT delivery. I am willing to pay SIGNIFICANTLY over order price (At least double) if you have any amount over 20 in hand for instant overnight delivery. If you have chips and are willing to sell PM me or post here.

### Reply 1:
Nobody has them in hand to my knowledge. they won't be released until September or so..

### Reply 2:
Would you be interested in 10-chip sub-modules from an Avalon rig at 14 BTC each (1.4 BTC per chip)?

### Reply 3:
You are asking me if I would pay more than 15 x times the price for Avalon chips? No thank you.

### Reply 4:
U really have no idea whay u talking abt ... do u? Rofl

### Reply 5:
At this moment, to get chips for development in hand, that price is not crazy at all. Welcome to the cost of opportunity.Enigma

### Reply 6:
Is there anything wrong with it ?

### Reply 7:
This is actually a good deal. I would consider buying 1 of those chips but my only concern is getting the chips out of that board. Can I trust someone to do the reflow work while keeping the chip at 100% perfect condition, and then get it into my design without damaging it at all. The other issue is if I do have a problem with the chip I receive I won't know if its my design, if its my board, or if its the chip ect. This x factor makes me want to wait to receive test chips from Avalon instead.1.4BTC almost makes me want to try anyways but Im not sure if we can get the othe 9 chips sold. I don't think we could arrange all this disassembly and shipping before the Avalon test chips ship anyways.If your not willing to pay 15x the going rate for pre orders don't expect to buy any chips untill we have them all in hand. Test chips are not really for sale either, nor should they be. They are very limited and reserved for developers and assemblers. They would sell for at least 1.4BTC each if you could find somebody willing to sell one. Once we get them.

","[
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17269,"Date: 2012-09
Topic: How To Find a Block?
### Original post:
How Can i find these:Version : Block version numberPrevious hash : Hash of the previous blockMerkle root : 256-bit hash based on all of the <truncated> : Current timestamp""Bits"" : Current target in compact formatNonce : 32-bit number (starts at 0)

### Reply 1:
how does the miner's find a block? e.g (what is the algorithm used in generating a block)and what is done by a miner to find a block? e.g (what calculation's is done by a miner)and how does the Bitcoin-Qt verify that a block is valid?and if i were to develop my own program to mine what should i do in my program?

### Reply 2:
Download the client. Run the client. Let it download the block chain. Issue it a ""getwork"" RPC request. You now need to do a double SHA-256 using every possible 32-bit nonce, all 2^32 of them. Should you find a nonce that produces a hash less than the target, report that back to the client using a ""getwork"" RPC as soon as possible.See this thread: <link>

",[]
4852,"Date: 2013-05
Topic: Lancelot how to update firmware
### Original post:
About the firmware, does anyone know how to update it (both temporarily until next power cycle and permanently by flashing it) only with the xc3sprog utility and a Xilinx USB cable?I suspect it should work and it's the same procedure for both Lancelot and Icarus boards. I tried some command line based on what I used on Cairnsmore boards on one of my Icarus but couldn't make it work (I didn't try to flash).

","[
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    ""hardware_name"": ""Lancelot"",
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6408,"Date: 2013-09
Topic: KNC Ships their batch in 5 days, 10 days, 15 days?
### Original post:
If they do continuous shipping....do you think it will be unloaded all at once or in these increments like I noted?I cannot remember how to calculate the difficulty nor what the expected addition to the network is (I keep seeing 500 TH thrown around) I would say then break down the distribution equally (in theory it will happen organically with some happening on some days an a bunch happening on others) I know though that if its all dumped at once it will more quickly hit difficulty level as opposed to over a 3 week period.Is this question pointless? why yes it is

### Reply 1:
Where is the ""In two weeks"" option?

### Reply 2:
+1 I think they won't be able to ship anything in Oct. Given the fact that there is no evidence of a running prototype exist now. One month to bring a limping prototype to fully functional product is pretty impressive, if they can do it. So I won't be surprised if they start shipping in Nov. You fan boys have been claiming ""as soon as the chips arrive, slam the chip on the PCB and done, no prototype, no testing needed"". I don't think such thing happens in the real world.

### Reply 3:
I'll believe it when I see it.Ever wonder why the world ""lie"" is in the middle of believe ?Strange coincidence, isn't it?

","[
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9790,"Date: 2016-04
Topic: Antminer S7 modification// better heating, performance split
### Original post:
hi!I have a brand new Antminer S7 batch 11 and and Antminer S5.I really dont like that S7 working too hot and really really loud, in addition 1200 W is too much power consuption from one location becuase of several reasons for me. Idea 1:The fact is that i would like to split S7 performance into 2 custom devices. Of course i can remove hashing boards from S7. By this way i can reduce power consuption to 800W ( 2 boards) or 400 W(1 board). This is okay.My idea is to plug removed hasing board into S5 controller. Becuase as i see S7 uses S5(+) controller.The result would be an S7 with 2 hasing board, with less heat, less cables, less consuption, and of course less speed, BUT it would def has a longer lifetime or/and better OC.And a modded S5 with nice temps, 1,6 Th on about 380W. + I can use them in different locationsIdea2:It is really crappy that hashing boards in S7 has small heatsinks and dont use the housing which is a full aluminium, very good for a heatsink. Plus boards are very close to each other wich make less effective heating at all.Would be great to utilize housing as a heatinks or to completly remove all hasingboards and put there huge heatsinks on each blade and forget <rest of post truncated>

### Reply 1:
Idea 2 is no good heat sinks are really hard to remove.Idea 1 may work not sure

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1291,"Date: 2013-08
Topic: [OPEN][Group Buy] HashFast Shares  ฿3=20GH/s *5th Miner PAID
### Original post:
Hi, please reserve 3 shares for me: I'll pay in 12 hours. ThanksBye

### Reply 1:
To: GroupBuy HashFast - waldohoover <truncated> -9.00 BTCNet amount: -9.00 BTCTransaction ID: <truncated> note that by mistake transaction fee was setted to zero: let's see if the transaction goes into some block... I'll wait 24h and if does not appear I'll pay again setting a transaction fee higher than zero.ThanksBye

### Reply 2:
Ok, transaction is confirmed by network!Please consider <truncated> as the sending address to pay dividends.ThanksBye

### Reply 3:
Refund for the poor people paying 3.05 BTC a mere 8 hours before the price dropped still coming?

### Reply 4:
Got the refund, cheers!

### Reply 5:
Do you know how many of these machines are left? I faintly remember they had a small number for manufacture and then they will stop the orders. I like the idea to get a few shares on each of the machines!

### Reply 6:
and someone ordered 200 at once! crazy. I wonder if it's the company itself trying to create this hype for their product. I only see a small number of of those orders on these forums!

### Reply 7:
If I ordered $1.12 million worth of mining equipment, I certainly wouldn't want anyone knowing who I was, which solar system I was from, etc.That is, unless I was a reseller, which is another possibility.

### Reply 8:
Payment and Email sent for 1 share.

### Reply 9:
I'm interested. Can you reserved 1 share for me??---BTW Why in unit #4 there is 19 shares, not 20 ??

### Reply 10:
If I had to guess it would be IceDrill.ASIC IPO fund that bought the 200 units.<link>

### Reply 11:
I'd like a share reserved and can pay by tomorrow when my transaction clears on coinbase.

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22544,"Date: 2018-04
Topic: Setup (Need another set of eyes)
### Original post:
Hey Guys,I'm getting to the point where I am about ready to flip the big switch outside and start bringing miners online and just wanted to get another set of eyes just to make sure I'm not doing anything terribly egregious in regards to how things are set up.I have two sperate service runs in the space I am in. They are both 3/0 runs to separate 225 Amp panels. One panel has lights and fixtures on it for the space so I will be leaving it alone. The other is bare (no breakers or circuits) so I will be using that one to stand up the first pod.Panel Notes:Stinger Hi-Leg configuration A - Single Phase 120vB - Three phase 208vC - Single Phase 120vI'm using 30 Amp tree-pole breakers and only running off of the 120v lugsSince this is a service panel the Ground and Neutral are bonded.25ft EMT run to L6-30 receptacles using 10 AWG wireEach receptacle will connect to a 30A 208/240v PDUMiners connect to PDU which has 8 Amp fuses on outletsTwo shorter runs to power two 120v receptacles for other devices, each on a separate 1 pole breakerAirflow looks like so:Air > Filter > Enclosure > Blower Fan > S9 Bank > Exhaust into empty space > Extracted <truncated> look terribly out of place? I'm open <rest of post truncated>

### Reply 1:
I figured I would provide an update for those that are curious if I died in a fire or not in this past week.Miners are running well and within derated ampacity limits of the wire gauge that was used. I've been bringing them up in groups and taking readings everywhere to make sure its all going to plan. These things are super loud, next project is some sort of enclosure to provide some soundproofing and path to extract the hot air.

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    ""hardware_name"": ""8 Amp fuses"",
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    ""hardware_name"": ""120v receptacles"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""1 pole breaker"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Air Filter"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Enclosure"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Blower Fan"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S9 Bank"",
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3473,"Date: 2014-06
Topic: ***BLITZ GB*** SP-Tech SP15 pre-order - 3TH/s - $2800 *** 0.93$/GH - 0.46W/GH
### Original post:
Reserved!

### Reply 1:
is that correct , september shipping?

### Reply 2:
Yes. SP30 August Batch is sold out!

### Reply 3:
don't buy miners with btc use fiat instead. price will go up. just be warned. see my signature.

### Reply 4:
Unless the exchange rate is big

### Reply 5:
First reservation received!

### Reply 6:
1x Reserved!

### Reply 7:
true but reality fiat is usually scarce for most of us, especially if we invested a lot <truncated> along time 3ths will be the 1th ,and preorders are so last year, but you could let spondooly off because they do deliver.

### Reply 8:
Not worth the risk for razor thin margins.

### Reply 9:
Well people showed interest about this kind of product:

### Reply 10:
The product itself looks very good. It's the three month pre-order at only half the cost of currently available hardware that is not so good, but to each their own. If the price of BTC is much higher in September than it is now, this could still work out OK for buyers in fiat terms. I can't really blame spondoolies-tech for trying to presell as much hardware as they possibly can because it offloads their risk onto buyers.

### Reply 11:
Agreed. Very high level calculations show that this unit costs about half as much per GH as currently available mining hardware, uses half as much electricity, but won't be delivered for 3+ months.If difficulty goes up more than 2x over the next 3 months, which is VERY likely, this is not a very good buy. Money would be much better spent deploying hardware now at twice the cost per GH and mining with it for the next 3 months.

### Reply 12:
when would i need to pay the $2800?

### Reply 13:
After there are 400 units reserved. If reservation isn't met I will return you the reservation fee.They are not offloading the risk onto buyers because there is not risk. They are trying to secure a supply chain and the advantages are numerous for doing that.

### Reply 14:
Lol that is a bit disingenuous Road , saying there is no risk. And this is coming from someone who ordered sp30s for Aug deilvery. There is a ton of risk the main one being that the price of BTC falls off a cliff along with high diff which makes these machines nothing but expensive paperweights.I could name more but you get my drift. Yes its a lesser Risk than Pr-ordering from BA or KNC but there is ALWAYS a risk to the per-orderer.

### Reply 15:
He's talking about market risk. The company itself is probably the most solid in the industry.Mining companies would have you believe that the only reasons they build and sell equipment rather than build and mine equipment are altruistic: For the good of the network, bitcoin in general, etc. Reality is that, just like in every industry, they are doing it for a managed risk/profit margin to people who have slightly different needs or desires. By doing presales, they guarantee their revenue even if the market becomes saturated with equipment, which it just might.Any rate, we're way off topic now and in the OP you wanted this thread to stay on topic and ignore profitability debates. I'm really interested in getting one of these myself, but I need to make sure I have the coin first. Unfortunately the interest in this isn't what I expected it would be when I first saw this. I'm hoping we can make the 400 to even make this a possibility.

### Reply 16:
Whilst I appreciate your efforts and I've been in both the previous group buys....I'd much rather have a deal on the SP10's that are in stock, the price hasn't moved for a while and difficulty has gone up, as much as I love mine I can't pull the trigger on any more at current price.

### Reply 17:
thanks for the lightning quick responsejust some clarification if you dont mindso if by june 5 you collect 400 reservations i would get <truncated> for the full paymentis that immediately, what is the deadline for the actual payment?what if you collect 400 reservations but some people dont pay, is the group buy still valid?what if you collect 400 reservations but they decide to not make the sp15, i guess thats a possibility too?

### Reply 18:
Of course I was talking about the non-delivery/being late risk. The difficulty and the exchange rate isn't in SP-Tech's hands.Don't you think that this is good for further and better development?If by 5 June there are at least 400 reservations you would be required to pay immediately. I think that a decent 2-3 days are allowed extra for any type of payment that you wish to use.If there are 400 reservations but some people won't pay there will be a decision right then depending on various factors. Can't say anything for sure, but I can say that I will try to make it decent.(like I won't cancel the GB for missing 3-4 units or stuff like that)If there are 400 units paid there will be a SP15 for sure. Maybe it will be available for some future batches, but if the requirement won't be met <rest of thread truncated>
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4772,"Date: 2013-04
Topic: Virtex-7 vs Stratix-5
### Original post:
120 views and no answer?

### Reply 1:
I think only few ppl have experience with both of these FPGAs.

### Reply 2:
Thanks a lot for your answer Probably I will use Kintex-7 > I'm waiting for a price for 500-1000 pcs> anybody done a bitstream?An update as soon I get the price.

### Reply 3:
Fire up ISE and compile the open source Bitcoin miner for them and see what is has to say for timings/usage. See <link>

### Reply 4:
Sorry I'm not a programmer, so in this part I will need a help

### Reply 5:
Here <link> fpgaminer achieved 400MH/s with XC7K325T part. It's 1k$ part. There's a chance that he will get closer to 1GH/s. Worth it?

### Reply 6:
let us know they price, i wouldn't mind paying 120% plus shipping depending on price

### Reply 7:
I will probably go for 1000+ to reduce price. 1Gh/S would be nice. Anyone knows how much W is consuming??Thanks for your help.

### Reply 8:
I'd want closer to 2GH for a $1k part to even bother at this stage of the game really. I'm interested in the price too though.

### Reply 9:
Hm do you think is posseble go more than 1Gh/s.And because my idea is something like BTC & LTC mining, I will probably need a team, but first I have to get the price.So any helper for 1Gb/S bitstream or higher?

### Reply 10:
A few hundred dollar video card will give you that kind of hash rate, obviously it will chew a lot more power but still. FPGA chips seem overpriced, probably not enough competition.

### Reply 11:
The discussion is about FPGA, not video cards. So please no off topic posts.

### Reply 12:
Seems I can get better price for Stratix V A7 or D5. So I will need help for one of this chip to get maximum hashrate. Any idea?

### Reply 13:
Try the open source cyclone bitstream? (<link> or ask for a modified TML:<link>

### Reply 14:
Tyger thanks a lot, is a virtual beer enough for your help?

### Reply 15:
Had the same idea a while ago, did some research, but fpga does not intrest me that much anymore.The world is an expensive place, saying thanks is enough for me.

### Reply 16:
If I only could know the hashrate of Stratix-V A7 or D5 I could write more details about my project.

### Reply 17:
How low are you talking per-chip that you can get?

### Reply 18:
I'm still negotiating about the price, but now I need information about Stratix V A7 or D5 hasrate and power usage. If anyone has any information It would be great.Those are only a pre development questions.

### Reply 19:
Avalon Asic run at 282mh/s and only cost $8, so let say with 6 chip/ 1692mh/s is only --- $48, would you be able to beat this price

### Reply 20:
Yeah, okay. But I can't answer If I don't have the primary answer: does anybody know the hashrate of Stratix V A7 or D5?So with this information I could answer more....

### Reply 21:
you can order a dev kit, but they cost some money

### Reply 22:
Well, depends on how skilled your engineer is. Please compare the range of the bitstreams for teh spartan6 which spans 200 MHash/s to ?300? MHash/s.

### Reply 23:
For those who are developing anything at all, they have better chances learning how to develop FPGA dev boards if they don't have a few years of Engineering or tinkering under their belt. While those Avalon chips are a steal, and I might buy a few soon, I'd like to get documentation about them, and what their requirements are before I go and build an ASIC rig for myself.Not too many people have a deep understanding of the Avalon chips, so for most people it's not a good idea to buy them up before they know what to do with them.I would assume between 150-300MH/s per chip. The hashrate depends on a number of things. Firstly it depends on the clock rate you set the FPGA at, and secondly it depends on the bitstream you program into the FPGA.Do you have experience with FPGA's at all?

### Reply 24:
at the end of the day is always how many hash rate per chip and at what price is the chip that counts...

### Reply 25:
I'm still alone, I only have an idea, no team, no engineer....

### Reply 26:
150-300MH/s only?? I'm not talking about Spartan-6....

### Reply 27:
Yeah for some reason I was thinking Spartan 6, was half asleep.As far as the Virtex-7 goes, and the bandwith that chip is capable of it can produce roughly ~1GH/s to maybe 3GH/s. It's a very beefy chip, and also very expensive. I'm talking $4000 a chip.The Stratix 5 I'm not quite sure. I don't see any numbers as far as chip bandwidth goes, but it's outrageously expensive per chip as well. So I don't know how low of a price you're trying to negotiate, or where from. I'm curious as to why you would consider the investment if you aren't an Engineer or don't have one?

### Reply 28:
I'm not an engineer and I don't have any. No problem, we are human and we have to make mistakes. Yeah Virtex-7 is a good one. And Kintex-7? It could be possible the 7K410T series could make about 750mhash/s?Thanks again.

### Reply 29:
lame.duck is right, it all depends.On t<rest of thread truncated>
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8332,"Date: 2014-08
Topic: btcgarden-AM-v1 only $0.85/GHs 1.045w/GHs. In stock for international selling!
### Original post:
Can you add New Zealand to your shipping list on btcgarden.com? Tried sending a mail on the site (failed with unspecified error) and tried the link out to to that Chinese postal company, site is a mess and doesnt load.Also, FWIW, the price on (what I assume is an official disti) <link> is way way higher than on BTCgarden, what gives?

### Reply 1:
Website btcgarden.com supports calculating shipping cost for NZL now.

### Reply 2:
Any quotes for <truncated> Buys?

### Reply 3:
I was told purchases over 10TH may see small discounts of around 5%hoping these guys can keep ahead of bitmain pricing (they have to since they use 50% more power), I ordered a pair of units yesterday and am looking forwards to building a farm with btcgarden equipment if the price and qaulity are good

### Reply 4:
I'm on the same path.I set mine up on Friday and am very impressed.They did an excellent job on everything.

### Reply 5:
Hey! btcgarden, is there anything I can do to get my money back? That bitch on skype took my money and blocked me. Pretty not just only me that fell for that.

### Reply 6:
7 days still no miner, still in Hong Kong.Miner supposed to had shipped out on the 14th.How long did it take for those who have one to get theirs?

### Reply 7:
Sorry for your lost. We warned several times, and put on op. And even removed the skype communication method from website to prevent our customers accidentally add that scammer.Nothing we can do to get your lost back.Here we are warning everyone again: DO NOT ADD luckjimmymsn.com on skype. That is a scammer pretend to be us and sending you virus for steal your money.

### Reply 8:
Ordered on Sunday.Shipped on Monday.Received on Friday.

### Reply 9:
Sorry to keep you waiting. DHL arranges they express 3-7 working days. I am seeing yours is leaving HK. It would probably get to you in another 2 days.

### Reply 10:
Ok then I should've had mine by now.I ordered last Sunday. Payment was confirmed within an hour.

### Reply 11:
Once mine landed in the US I had them very quickly, You should see em Mon, or Tue at the latest.

### Reply 12:
Mine is so close to me

### Reply 13:
Old Old, Pricing. Fixing that now.

### Reply 14:
Measure of package is a little different between us and DHL. So latest shipping cost from DHL shows in picture at below. Also updated on website. It will calculate shipping cost automatically when you placing an order.

### Reply 15:
HiFor New Zealand you can choose EU/AUS

### Reply 16:
Where can I find the current BTC rate, if the order is US $600 ?Is this the only official address for payment BTC Address: <truncated>

### Reply 17:
That's right

### Reply 18:
We use bitstamp's realtime rate. You can check when you placing order.The payment address will be shown to you when you placing order too.our website is: www.btcgarden.com

### Reply 19:
when you pay you look <link> top left ( for example : Bitcoin price: $621.00)so you can use the rate et find the price in BTC 600$/621=0.9661835 BTC

### Reply 20:
Too complicated for me. I have previously purchased directly from the manufacturer only the KNC, bitfurystrikesback and bitmaintech, and there are all <truncated> can I find bitstamp's realtime rate , if order has no time only Order Date: July 21, 2014?<link> a lot of orders.My order is Order #100000050Order Date: July 21, 2014

### Reply 21:
But only order with the web I think, you can be confident I'm waiting for DHL now I'm in France ==> 3 days

### Reply 22:
They are very good devices, but the extremely high power usage makes me go fo the spondoolies sp30

### Reply 23:
I ordered one the other day so I just sent 1btc, couldn't be bothered with the spare change

### Reply 24:
Cant login to btcarden from the uk. Im with virgin isp

### Reply 25:
btcgarden website has not worked for me since the 17th either (norway), messaged them and got told its working for them.

### Reply 26:
use proxy then

### Reply 27:
Tried via servers i have in netherlands, germany, sweden and US without getting any success beyond pinging the url.The amout of red flags i got from checking dns/ip/host made me order from a reseller that looked a bit more legit instead.

### Reply 28:
Funny thing is it works from my mobile phone web browser. Why is this happening btcgarden ? I want to put a order in.

### Reply 29:
I just tried some proxy sites but they are so slow and im scared of using them just incase they might steal login info etc.

### Reply 30:
Could you try clean your DNS catch and browser catch?

### Reply 31:
I cleaned my browser cache and still no good. How do i clean the dns cache?

### Reply 32:
Please run ipconfig /flushdns under CMD.

### Reply 33:
Do KNC lesson was still not enough for you? I do not make anymore non-refundable preorders 5000, or 10,000 dollars. 1,000 is my limit for preorders.I preorder 11. may the SP-10 for 7.089 BTC, and after 3 weeks s<rest of thread truncated>
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    ""hardware_name"": ""btcgarden-AM-v1"",
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  {
    ""hardware_name"": ""units"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""KNC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitfurystrikesback"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""bitmaintech"",
    ""hardware_is_owned"": true
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11119,"Date: 2022-03
Topic: Antminer S9SE DUAL MODE Using one board
### Original post:
Hi, Guys Has anyone successfully Joined two S9SE using one Board? i tried with the usual S9 6 Port Mod But No success

### Reply 1:
Never heard that someone can make s9se to add more hashboard in one controller maybe you can only succeed if you have a custom or modded firmware but I can't find any modded firmware yet unless someone here can provide it for you. Try to contact this man thierry4wdhe is always looking for a tester from his custom firmware and maybe he can help you mod the s9se firmware.

","[
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    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""S9 6 Port Mod"",
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]"
13818,"Date: 2023-03
Topic: Help me to install CGMiner in windows
### Original post:
I was finding Official CGminer software but not found, i searched on youtube and found this website <link> i don't know how to install it, <link> don't know how to install it on windows 10, please help me to install it by process, and if you know how to install from github then share the process of installation i don't know how to use github, just heard name of it,and if you know other option which is best than cgminer than you can suggest ,

### Reply 1:
Why do you want to install it on Windows 10? I think you don't need to install it you just need to download and configure the bat file and then run it.If you are planning to mine with CPU it won't work.Kano has a guide on how to run this if you have USB miner or erupter then follow this guide below- <link>

### Reply 2:
One possible 'gotcha' is that Windows requires using the Zadig USB driver.It also needs to be mentioned that -ck's version of cgminer is rather old as -ck stopped supporting it long ago. Unless you have a specific reason for using that old version (eg cpu/gpu mining) it is highly suggested that you use Kano's much updated version which is currently at r4.12.1which can be found here

","[
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14855,"Date: 2013-12
Topic: What kind of rig should I use for mining?
### Original post:
I really want to start mining, seeing a lot of cryptocoins coming to town. any people here have some tips? I plan on making a small network just for mining.

### Reply 1:
check <link>

### Reply 2:
This guide is much better. <link> guide you gave don't have enough detail in configuration and other detail.

### Reply 3:
Order your self black arrow 2th late February delivery miner.There is no other mining hardware worth of buying right now.And there is no need to create any large or smal ""network"" () for mining.

### Reply 4:
Thanks for the quick replies guys. I just hope when I get all components and get eveything set up I can still make a profit, instead of paying too much to the electricity company. Of course I could use it to mine other cryptocoins

### Reply 5:
Just do good research on what hashing speed you will get and how much power it will cost you. An easy tool to see which coins are most profitable and at what cost, take a look at <link>

### Reply 6:
computer with 2 or more amd radeon 7950s for scrypt mining:) if u buy asics then y have a larger risk of not getting ur investment back and not being able to sell ur miner for a good price. where as u could sell ur gpus for nearly the same price as u bought them

### Reply 7:
None don't do it. Just buy and hold.

### Reply 8:
I agree with the others, scrypt mining with amd gpu's is a good bet, but getting some pre-order equipment from black arrow seems like a good bet as you can always sell the hardware on ebay for more than what you paid for most likely.

### Reply 9:
for alt coins this is probably going to be your entry key. Easy to expand and has a resale value should you want to sell up quickly.If you are looking at bitcoin or other SHA256 stuff, ASICs are the way forward, with all their ongoing problems with useful life and supply dates.

### Reply 10:
Stick just to scrypt coins, dont even look at btc and asics unless u want to spend some real big money. Under 600 can make an ok rig which on the right pools can return in less than a couple of months at the current markets.I'm liking some of the new MBs with 6 PCI slots, best to run Linux to avoid the whole 4-5 GPU only bugs stuff. U can always start with 1 card and work up.

### Reply 11:
As the profit rolls in, invest those profits in new hardware - motherboards, GPUs, RAM, processors and drives, to get greater return or just to combat the rising <truncated> to new (and lower difficulty) coins can mitigate the difficulty rise.

### Reply 12:
Oh the voice of reason, that's the most profitable advice, but where is the fun and learning while playing with hardware?

### Reply 13:
If everybody held their coins then BTC would no longer be used as a currency and would become worthless except for nostalgia hoarders.Build a dogecoin rig or something of that nonsense. BTC ASICs will usually not repay their BTC investment although they might break even on fiat basis.

### Reply 14:
Agreed, people need to trade and use any of the BTC\Altcoins for them to have value. Just hoarding coins will never increase the price because what reason do people have to buy them otherwise.

### Reply 15:
madjules007 do you know if coinwarz is telling you the profitability based on mining on your own or joining a pool?

### Reply 16:
It's based on Solo mining I believe.

### Reply 17:
are you crazy?when you solo mine only thing you can mine is whole block! so calculation would be ""time to mine block...""!!so it's obviously pool mining calculation showed on <link>

### Reply 18:
Unless you have alot of hashpower behind you dont solo mine, join a pool it will give u a better chance of completing a block.

### Reply 19:
that's a complete different thing!mining calculators, thegenesisblock, coinwarz etc. are giving you pool mining profitability calculation!

### Reply 20:
Thanks for the information Guys, In this price Mining is really Profitable.I want to start a new mining rig with investment of 3K so anyone could recomend me specially PleaseThankyou

### Reply 21:
With $3000, you can create a rig with 3 R9 280x GPUs. Check out this guide: <link> rig should get you around 2.1 MHashes/s

### Reply 22:
Thanks for fast and best replyI will try to assemble accordinglyas your best information howmany time could it take for ROI Ie. Todays price of Bitcoin is 700$

### Reply 23:
You should not use this rig to mine BTC directly. That would take a long time (decades, I think), with the rising difficulty.You should be mining scrypt based coins like LTC or others.Take a look at any of the following links. Enter 2100 kHashes/sec in the scrypt textboxes, and they will give you an upper estimate of your earnings.<link> value of these alt coins can be very volatile, so you may want to get familiar with these tables, and switching between coins when it increases your profitability. If you don't want to handle that manually, you can look into an auto-switching pool <rest of thread truncated>
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    ""hardware_name"": ""dogecoin rig"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""BTC ASICs"",
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7999,"Date: 2014-07
Topic: Board Designs for BlackArrow's Minion Chips
### Original post:
Due to BlackArrow delays, some of their customers are being offered 50 Minions in place of a miner.Just wondering if anyone had done anything with these chips. There could be a lot available soon.WASP Collective was going to design something but I don't know if it <truncated> customers are wondering if it's worth it to get the chips or continue to wait. Thoughts?

### Reply 1:
HI,we are working on our board.The test board is already populated with 1 chip and we are testing.I'll update as soon we have results

### Reply 2:
Any guesses on performance yet Marto?

### Reply 3:
We are not working on the Minion chips at this time. We are working with the Hammer SpondooliesTech trying to develop a board that goes into a DataTank test system at Allied Control hopefully in June when I am in HK for the Inside Bitcoin conference. Our Minion design board will only be starting later in 2014.Best suggestion don't take the chips unless you have something already tested and working and fabricator you can trust. Such a small number of chips will be a fairly expensive build. You might be waiting a lot longer than just being patient for them to figure out their issues with the backplane. Or take the miner compensation and mine or sell them.

### Reply 4:
Weren't you guys working on a universal system for all chips? Didn't the WPC receive a variety of chips from a variety of manufacturers? What happened to all of those and the cards WPC was working on to support them? Are you going to follow through on the Hammer ASIC, or are you guys going to scrap that entirely as soon as another one comes along like you have for everything else?

### Reply 5:
I have 20 of the chips in hand sealed in the US, any one who is interested in DIY board design is more than welcome to contact me to receive them.

### Reply 6:
A 3rd party board for these chips would be very cool.

### Reply 7:
We are not working on the re-design yet for the Minion. We had nearly finished an A1 board and had it blinking away and that has now been relegated to a test board, (as the blinking board was designed as a test board anyhow as a first prototype), and we did this because more chips became available and we were offered the Hammer chips and took that tact over the A1, BE200 and the Minion we look at the costs of the chips and the design requirements and made our decision based on the recommendations of the EE team. The WPC in meetings then set out a plan for moving on to other chips as the A1 is an odd ball chip to say the least with its unique cooling issues.So, first we have to get our 1300 Hammer chips into a preliminary design either some as a Whiteface that will be Novec cooled or a Hornet which is an air cooled board. We could work with others if they want to take on parallel design for the Minion versions but we would have to look at some sort of agreement for that and the members who have invested in the boards (project) would have to agree. That is something that lead EE can talk more about. If anyone is keen on that please contact me and I will arrange for you to come to the<rest of post truncated>

### Reply 8:
How about leave it to other threads, and we keep this thread to the OP?

### Reply 9:
Take it somewhere else guys. Asking about 3rd party Minion designs is not a controversial question.

### Reply 10:
OP Please excuse meOfftopic removed

### Reply 11:
OP Please excuse meOfftopic removed

### Reply 12:
Sorry all I edited all my off topic

### Reply 13:
If you know anyone keen on working on our base design by using the Minion as base chip then please have them contact me and I will arrange a meeting without EE to see what is viable. My guess is that won't be necessary as BA is paying for or looking for a solution given what I read. Wish we had the resources to do 3 chips at the same time but we are not Spondoolies.

### Reply 14:
testing ....

### Reply 15:
It seems to me this picture is version of Bitmine's open source 2 chip board for A1.FW abd SW part was made by Zefir i think.But may be I'm wrong, i did not look at it closely .I tought this tread is about Minion

### Reply 16:
You are wrong, very wrong on all aspects about the WPC, and that board which is an A1 Wasp prototype and has nothing to do with Zefir or Bitmine. Go ask Zefir yourself on that and check the boards they are completely different configurations. Oh my are you really telling me you can't tell the difference?This thread is about the Minion, nor is about you not paying people BTC you owe them from a group buy in 2013, and I was answering dropt direct question about the WPC Minion boardsand the development timeline, which you know nothing about so keep talking about your stuff and I will keep posting about our stuff.The movie of the A1 Wasp blinking... shows the power is on and all the gremlins are worked out powerwise and clearly demonstrates a HUGE difference between the bitmine offering and ou<rest of thread truncated>
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19345,"Date: 2014-05
Topic: Does SMOS works with the Gridseeds ???
### Original post:
Hi,I just would like to know if SMOS works for Gridseeds ??Thanks in advance

### Reply 1:
I'm interested as well. SMOS is based on BAMT, and defaults to mining with CGMiner.I've searched for Gridseed with BAMT and found nothing. But Gridseed does work with CGMiner. More reading says a modified version of CGMiner is preferred (required?), which allows possible software overclocking (unverified) to some degree, and improved hash statistics. Ideally, I would prefer a version of SMOS which would optionally handle both Gpu and Scrypt capable ASIC's together, to take advantage of all hardware available. AND, would also be CPU mining enabled as a user option (the m/b's already running, why not pull another 100k if it's there? ).

### Reply 2:
Hi,hope it's not too late...Short answer: Yes (I'm dual mining single GS on a 7950 SMOS rig)Long answer - later, if my answer is still useful.The real problem is here: When I'll solve this problem too, I promise to write something about it... until then, google like me and test everything!

### Reply 3:
Oh please do. Windows has been a complete failure with Gridseeds. no problem mining the GPu, but want use a USB linux distro to control Gridseeds on a separate box to my windows box, but am a total linux and ASIC Noob. I just dont know where to start or what to do. I just dont even know if SMOS or BAMT will be useful to me. On this linux box I will be mining the Seeds only, that box has a nVidia card and I wont even bother getting any Hash's from that. I think at best it was only ever good for 80kh/s So any and all help I could receive to get up and running with a linux Distro on USB to control Gridseed 5 chip Dual miners (scrypt only) would be greatly and muchly appreciated because like the other guys above I have googled and googled and found next to nothing that is specific to my needs.Thanks a Tonne in Advance

### Reply 4:
@Supercell:Hi, I don't have good news: it works as I wrote before, BUT:- SMOS never replied >> so I deactivated their donation scheme- Once at 2~4 days it stops (and if I sleep or I'm gone, I've lost more than 15min/24h)- I triple-mine on that rig (GPU, and dual GS), and I've tested BAMT with GPU+ASIC+CPUFrom what I've seen, SMOS is newer than BAMT (miner-wise and drivers), and other donation mechanism (a little harder)So, they took BAMT, updated it (me too...), a little obfuscation in donation scripts, and nicer reporting (??)Methodology: (I can't tell You which keys to push!...)- any Linux GS guide (I also used RPi's)- Compile and Install ALL they ask - including GS-enabled cgminer and cpuminer(that's why You HAVE to know what are You doing...) - start them in two screens - sha first, scrypt later...- Break Your coffee cup when Donation kicks in!...Hope You'll manage it, I'll check this thread later...

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15361,"Date: 2014-10
Topic: MOVED: Any review on Hash-Profit ?
### Original post:
This topic has been moved to Trashcan.<link> user, faked ""what do you think about this site"".

",[]
5693,"Date: 2013-07
Topic: Recieved 50GH BFL Single Today!
### Original post:
I guess making multiple orders the first day and paying extra on shipping has paid off.Received BFL single today and took some screen shots to share.I'll admit that I did receive an email when it shipped from BFL asking me to share PICs and I agreed.This has made my day. Good luck to all those still waiting. I'm still waiting for many other BFL Miners I haveordered for friends, family, and myself.Forgot to mention: I had lent my kill-o-watt meter to a friend so I will have to get back on that one.Powered with two PCI-e power connectors (same as the GPUs)Stop at Fry's on the way home to get a good power supply.Here's the miner setup and working away. approximately 50+ GHs (average looks around 54, butneed to let it run longer to know for sure)

### Reply 1:
Did it not ship with its own power supply?Edit: Grats!

### Reply 2:
Congratulations and good mining!

### Reply 3:
Wow! I want I want I want lol!

### Reply 4:
Looks distinctly... old, scratched and used, not a nice polished surface. Maybe it's just the photos...Have fun mining! Make sure to update with power usage.

### Reply 5:
Now you say that, I kinda see where you are coming from!I reckon BFL held off are and still holding off sending out LOADS of miners because they themselves are mining a MAJORity of them first >.<

### Reply 6:
CongratsOrder Date?

### Reply 7:
nop :-(

### Reply 8:
That's awesome! get it up and running and let us know how she runs

### Reply 9:
first day ordering was opened. I made several that day for friends, family, and of course myself.Decided to sell it on ebay:<link> the others come, I will be over my power budget. They were only supposed to be 60W miners; so, a few will need to go.

### Reply 10:
What's with the 1 week delay? Are you going to be mining with it during that time?

### Reply 11:
simple test.....Open it up and check for dust/signs of heat marking.If there are none, then I would suspect the bubble wrap, we have a similar problem in the China factories, we find the Bubble wrap is sometimes CRAP and will actually damage a products painted surface due to impurities in the BB wrap.....Also certain types of poly bag has the same effect...., it depends on the paints chemistry.The other thing is that if you ordered early it should be a 60GH/s unit.........

### Reply 12:
It's been running for over an hour now. Seems to be averaging out around 56+ GH/s.Just wish I had not lent out my killowatt meter. I really need it right now.

### Reply 13:
Yeah, I'm not the best photographer, but you nailed it. It was from the bubble wrap and the surface seamed a little porous. I was able to wipe it off with a slightly damp cloth.

### Reply 14:
From the auction:Creative, but really?I'm not sure you can actually do that and not violate EBAY ToS...

### Reply 15:
Oh yeah! extra burn in testing for the buyer :-) I'm such a nice guy.

### Reply 16:
Then you need to change your ebay ad.Item specifics Condition:New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreBrand: ButterFly Labs

### Reply 17:
Yeah, really! ebay charges a fortune for ""reserve"". If they give me any problems then I say good by to ebay for good.

### Reply 18:
Thanks! that was a close one. Glad no one had bid yet. I changed it to new other. I didn't put any details because the target audience shouldn't have a problem understanding the situation.

### Reply 19:
If you're willing to do that aren't you just as willing to screw over the buyer? You have already said several things that would keep me from ever buying it from you.

### Reply 20:
grats !

### Reply 21:
I see your point; just don't buy. screwing over a buyer vs. leaving ebay for being inflexible on their TOS that I don't even know what it says is not the same in my view. But to each his own. I've been on the edge of never selling on ebay again and I have a perfect rating. If they [ebay] give me problems, it won't be a problem for the buyer. I'll just move over to bitmit where i also have a good rating.Like I said in the listing, if you don't like how it is then just don't bid. Pretty simple really.

### Reply 22:
Glad to see some people actually getting their BFL units. I can't wait to get mine!

### Reply 23:
If BFL is shipping that is an insane price. i hope nobody is dumb enough to buy unless they are ok with a 1 year ROI and thats only IF they are lucky enough for the network hash rate to stay low or the price of bitcoins to shoot up again. Lucky for you, there is a idiot born every minute.Dont get me wrong. Its a bit of a knee jerk reaction and people can buy what they want, i just question their thought process. I dont question your motives because why risk ROI over the long term when you can get cash now AND mine with it.

### Reply 24:
It doesn't come with a psu. What.

### Reply 25:
At a price of $15,000 and difficulty rising at its current rate based on the last 10 difficu<rest of thread truncated>
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3379,"Date: 2014-04
Topic: [OPEN] NinjaGRP#7 800GH Rackmount Avalon3 Miner $2700 Hosting as low as $199/mo
### Original post:
I urge anyone considering this group buy to do your homework before investing:<link> the values:- 800 ghs hash power- 2700 USD for hardware cost- Monthly charge of 250USDThis hardware will NOT break even. Not at 20% increment in difficulty, not at 10% difficulty increment... Only at 8% difficulty increase.Please correct me if I am wrong, but I simply feel bad for people investing in such a group buy without understanding the hole they put themselves in.

### Reply 1:
With the current price of bitcoin there isn't going to be ANY miner that will show a good ROI prediction ~ you're probably better off just buying bitcoin. A few hundred dollars higher and it's a different ball game. It's not the first time the mining forecast was all doom and gloom, but somehow most of the miners have managed to stay in the game. Last time around it was the move from ~$100 average price up to ~1000 that saved the day for miners; how it will play out from here is anyones guess. I can tell you that even 10% sustained growth at this point without an increase in BTC/USD rate will be toxic for most miners.There can be some interesting tax advantages to mining at a small loss, particularly if you have other gains to offset. You can write off the mining losses, but still acquire bitcoin for future appreciation. The mining hardware really can't even be considered a capital investment as it becomes so quickly obsolete. It's cost is more akin to a drill bit for an oil rig, a straight expense. There are similar tax strategies using oil/gas ventures.Also you never know what exclusive offers we will find for our owners only group buys. We're making all sorts of interesting cont<rest of post truncated>

### Reply 2:
Fair answer! If the price of bitcoin does rise, it could indeed be profitable All the best to you and I commend your composed and articulated answer. Too much patience loosing in this forum over legitimate debate.

### Reply 3:
FYI to anyone looking to invest, he puts the stats on his website and weekly updates. I commend him for posting them. Especially with how honest and bad they are. <link> me crazy but are your customers losing money? What was the buy in and monthy cost for #2? Whats the ROI on your first 2-3 rigs so far? For group buy #2 is the math 3.6 bitcoins this week divided by 290 shares meaning each share produced .0124 bitcoin this week? Whats the monthly share cost? $24 a month profit is pretty painful.Looks like ""amount per share"" stat thats on #4 is .006 average for the last 4 weeks on rig #4. Is that their total profit at the end of the week?

### Reply 4:
Group one has paid out 68% of the initial investment, and the other early groups are in the 50-60% range. Mind you this is without the Neptunes, which should arrive sometime in the next month or so. The amount per share is after all hosting fees have been subtracted; our operation is fully transparent and open. Those that pay for hosting in USD get the full amount of bitcoin that their share mined, with no deductions. Oh and we actually mine, unlike some of the scam-mining operations that are merely a ponzi. We can prove our mining activity on the blockchain, and are one of the top teams on BTC guild. Our monthly fees are competitive with other companies that offer data-center hosting for miners; and we have been pushing those costs down over time. This group buy is down to $199/mo to host 1000W miner in a top-tier datacenter. Start calling around and shop datacenter space and you'll quickly realize that its a *deal*.

### Reply 5:
Oh you are definitely legit. That I dont question. I'm just thinking about the math and the risk. I applaud your transparency and honesty.

### Reply 6:
Are these still shipping out tomorrow, and there are still some available at the price listed?

### Reply 7:
We still have a couple units available, the rest are will be used to create our upcoming private mining cloud service (shhh). I'll let everyone know the moment I get a tracking number.

### Reply 8:
I keep a very detailed spreadsheet. Due to the 0.12 btc/share tradein options into Group Buy #6, I closed out of my positions at:GB#2, 9 weeks, 79.4932% ROI *GB#3, 9 weeks, 107.3295% ROIGB#4, 7 weeks, 89.2052% ROI(If I had been previous owner, GB#2 would have been discounted and provided: 83.47% ROI)

### Reply 9:
DHL just dropped off the first batch of 7 of these, they should be up and running tonite.

### Reply 10:
Hi, You will update the price ? The machines are hitting 800Ghs ? Im asking because there are similar machines being sold here that are averaging 750Ghs.

### Reply 11:
We are going to refund and close the group buy. The miners performance was way under spec and they are not at all reliable. They are being returned to the manufacturer, as soon as we get our refund we will refund those that bought.

### Reply 12:
How bad the machine is ?

### Reply 13<rest of thread truncated>
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18370,"Date: 2013-12
Topic: Block Erupter Blade keeps resetting at around 2 min.
### Original post:
I've been trying to get a block erupter blade to run for over 48 hours now.After I finally figured out all the configuration details and downloaded all the needed software and set it up to run on a pool, it just runs for 2 min. and 20 sec. and then resets itself.I've tried all of the fixes i could find here on the forum and nothing has worked.can anybody help me?

### Reply 1:
Are you able to try it on a different computer? It could be some conflict with that machine, and if you can run them on another computer without issue, its probably the computer. If the same thing happens on another computer, its probably the erupters.

### Reply 2:
I'm not sure why but my other computer wont run the stratum proxy. maybe i'll try my laptop.After fumbling with the blade for several hours without finding a solution, I opened a brand new one out of the box and configured it from scratch... same problem, resets itself after 2 min. 20 sec. exactly.I'm going to try another PC... Anyone else having the same problem?

### Reply 3:
Still no luck... I ran bfgminer on the other computer and pointed it to slush's pool... same problem... 2 min. resetEven if the data cable is not plugged in... 2 min. resetim running out of ideas...Am i the only one who is having this problem?

### Reply 4:
You set the server addresses and ports to the IP your stratum proxy is running on?You made sure the stratum proxy computer and the blade are in the same subnet?You made sure the blade's Gateway is the gateway for that subnet also?It resets every 2:20 when it isn't able to connect to something getwork.

### Reply 5:
Thanks for the reply!Yes, the server addresses all match the IP address of the PC that is running the stratum proxy.All are on the same subnet which is ""0"" and the gateway matches as well.I was actually mining on slush's pool for a while before the first reset, only at 9% inefficiency tho. Is there a way i can run the blade without using the proxy just to see if it works?Are there any pools i can test this with?i really hope i didnt buy defective blades!

### Reply 6:
If you have a pool that still has active getwork nodes, just punch that in as the server address. Low efficiency or low hashrate is expected here, because of the delays from getwork. When you say mining on slush's pool before the first reset, was that via stratum proxy or directly connected to the pool's getwork server?Did you hit ""switch server"" during the reset? I did a test on one of mine earlier, and changed the server address to an unused IP on my network. The blade reset every 2:20 as expected, but even after changing the server IP back to proper it still was resetting until I hit ""Switch Server"" which I guess woke it up and got it spooling properly. Don't know if that affects you or not.

### Reply 7:
I was on slush's pool via stratum proxy, only running at like 9% efficiency and then reset at 2 min 20 sec it resets. I will try hitting switch server.Thanks.

### Reply 8:
The only times I've had low efficiency were from getwork via internet (no stratum proxy) and from extreme overheating of the chips. Never saw 9% though. Was it low because of few accepted shares, or because of insanely high received? I know when the ASICs get overheated they tend to spam the getwork; accepted shares per minute might be acceptable but received work goes through the roof so efficiency drops.

### Reply 9:
As folks have said, the 2 minute 20 seconds is the automatic watchguard. If the Blade isn't getting work, then it resets.Try Eligius or BitMinter, both still have a getwork server running. I have Eligius' getwork interface set as the backup pool on my Blades, with the primary server the getwork proxy on BFGMiner that's running on MinePeon on the RPi.

### Reply 10:
Hi.im having the same problem, arround 2 minutes the blade restart... and its not posible change config, because wen change some... the config was not saved...any idea?

### Reply 11:
Did you ""Update/Restart"" after altering the config settings? If it still doesn't take after doing that, it could be bad memory in the firmware controller on the blade - which isn't really fixable.

### Reply 12:
in my case the config is:mac pro (192.168.1.5)cable modem with 4 ports hub (i think is hub, not swich)the steps that i did:1.- factory reset (pin 2 and 3 )3.- plug in one port at hub cable-modem4.- try go to <truncated> Fail...after i decided to plug directly to my mac (mac <----- ethernet cable ----> Blade) and i could go to config web at blade... but... 2 minutes and some seconds... the blade make a reset...i have no idea, maybe the blade dont find any pool at default ips and just restart... or maybe im doing some bad.Thanks in advance, and sorry for my bad english.

### Reply 13:
The default settings on the blade are basically useless, just for show. You need to either mine on a pool that still supports getwork, or more efficiently, run a <rest of thread truncated>
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2452,"Date: 2013-12
Topic: GROUP BUY [KNC Neptune-DayONE] [.6 Per share 25/32 Shares Available]
### Original post:
Prices have been lowered to .6 due to BTC price going up. Please submit the updated price.

### Reply 1:
Lmontrose -I just wanted to say thank you for moving the price around as BTC fluctuates, with the goal to being fair to all concerned, including yourself. If there was a way I could have trust in this being more than a gamble (you can just disappear with all the BTC), I would buy more shares and recommend to my friends to buy in. I'm saying this in case you do know of a way to help us all feel more safe in this investment. Scott

### Reply 2:
I would like 2 shares in Group 3 pleasesent 1.2 BTC from <truncated> for 2 sharesTx. ID <truncated>

### Reply 3:
More Shares! Now we're down to 23 units left in Group buy 3. I may be a bit slow replying to messages. I am getting so many. Please bear with me. Thank you.

### Reply 4:
lmontrose - please confirm my payment.

### Reply 5:
I am just courious on a few things, myself i have never mined btc yet, but i to trade them on exchange to try and get more.. I would like to know in pools like this one, say someone has 500 gh/s in shares that would be 5 shares i think... Can anyone estimate how many btc 500 gh/s comes out to be? is it dependent on the pool we join? is solo possible? how many people are in a pool like this? are the 25 btc found split evenly per share? umm ok thats is enough random questions for this page

### Reply 6:
You need to send me the TxiD: first before I can confirm. Can you go back to your client and send that info to me. Thanks

### Reply 7:
Flexgroo,It'll depend more on when the miner is received. A good way to calculate how much you can get per Ghs is this site.<link> it depends on difficulty. And difficulty goes up about 20% every 2 weeks on average.Hope that helps.

### Reply 8:
<truncated> wrote it in PM and in a post a few pages back.

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14523,"Date: 2012-02
Topic: Graphics Card Depreciation Chart: GPU Half-Life = 18 months
### Original post:
Interesting...I'd be curious to see the 5870 on there as well, since it's one of the more highly sought-after cards out there.

### Reply 1:
Why is the 5850 on there twice? I'm curious to see where the 5970 would place.

### Reply 2:
Nice. Add in 5870 and 5970 I would imagine they will be outliers (I wish they weren't ).

### Reply 3:
The 5770 is there twice too. It's comparing the value of ~200 days after release and ~800 days after release. At least that's what I think.

### Reply 4:
Yep - there are actually 2-3 points for each card. There's the launch price, which appears at [0,100%] for all cards, then I generally found a mid-point price from a forum or archived news story, then a 3rd data point generally came from eBay, as beyond a certain date, it's harder to get hold of new stock. (and even when you can they're at unrealistically high prices)

### Reply 5:
[EDIT: Should mention this work was done in not $$$ (or BTC )]I've started doing a bit of small-time mining recently (~1.5GH/s) and I wanted to do some estimation of real profits, taking into account the capital cost of the mining hardware. After a bit of trawling, was amazed that I couldn't find a simple graph of GPU depreciation, so I made one. I'm not claiming this is comprehensive - I only looked at prices for mid-range ATI GPUs, because I thought the very high-end cards might follow a different price curve, and the very low-end cards are just hard to find prices for.I basically looked for a few different cost points in the life cycle for the ATI 3000-6000 series - e.g. (i) the launch price, (ii) a subsequent price drop announcement, and then (iii) a used-price on eBay. The 'cost half-life' is about 550 days, or 18 months.

### Reply 6:
Well, you don't get much MHash out of a 5770, but I've found it's a pretty awesome combination of MH/J and MH/ - I picked up 2 for 50 each, and I'm running them at 1V@860,300 for a power draw of 78W and rate of 197MH/s. That's 2.53 MH/J and 4 MH/.

### Reply 7:
14 posts and you come post something THIS useful? You get my ""Newcomer of the month"" award. It's an interesting topic to research. I suppose there could also be a correlation between the drop in value and the release of a new generation of cards. Do you have any dates?*EDIT*Ok, I didn't saw your excel chart. The data is limited but hey, it's still a good start.

### Reply 8:
Thanks! - I've been lurking for a few weeks, but glad to post something people might find useful. I'm really only mining to support the network, and because I believe bitcoin is a fundamentally good thing; UK electricity prices really only allow a very slim profit margin for miners (we're talking 10% here). I know I didn't collect a whole lot of data, but I don't have the time to do something more all-encompassing (I'm supposed to be working right now actually ). I think most people already know that products in the sort of bracket that GPUs inhabit (novel technology) follow an exponential curve with their depreciation - I just wanted to get a rough idea of the time constant.

### Reply 9:
HD3850 does not support GPU mining..

### Reply 10:
Maybe not, but it is a good reference point on the graph. It supports double precision and up until recently would have been usable at Milkyway@home. I haven't owned any HD38xx cards, but had a 2600 for a while (until it died). The 5970 points would be very interesting, and even the 4890x2'sOP: thanks for the graph

### Reply 11:
True, but it does have a GPU, and it does depreciate, so it's valid to put it on the graph Name me a card released 1500 days ago that does support GPU mining...

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1153,"Date: 2013-08
Topic: [SHIPPED] $58 SHIPPED! ASICminer Block Erupter USB Groupbuy #1 - 300+
### Original post:
just wanted to pop in and say thank you! received mine yesterday!

### Reply 1:
Excellent! Happy Hashing

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4147,"Date: 2012-08
Topic: X6500 with Raspberry Pi?
### Original post:
Hello, I've just decided to purchase a Dual FPGA X6500 and i'm considering a few options for the rig that I'll be runing with it. A full fledged pc, even with an os on a stick seems like overkill especially since I've heard about the raspberry Pi, but I've no idea if the on board OS of the raspberry(ARM Debian) will support a miner. I'm pretty new at the whole linux thing, like the idea but don't quite know my way around. If anyone can shed a bit of light it would be awesome.thanks

### Reply 1:
Here is some info.<link>

### Reply 2:
It works but the raspberry pi is a little ""miss princess"" when it comes to USB Connections.... (usb Hubs and so forth). I couldn't get it working with my Ztex boards. Not for a long therm mining operation.

### Reply 3:
thanks guys, i'll get reading and investigating

### Reply 4:
It should work <truncated> all work fine on my RaspberryPi with my Cairnsmore1 boards, so your x6500 boards should work fine after you get everything set up ( there's some guides on the forums depending on what mining software you want to use )

### Reply 5:
Take care that you have a good power supply for the PI and a good (maybe powered) USB HUB. What helps is to tape the power contacts of the USB Port that connects the hub to the pi (It hates feedback power .... from a not so good usb cables or HUBs).

### Reply 6:
I was considering one of these: <link> expensive, but there are more USB root hubs. Better for the multi device miner.Also, bear in mind that the Raspberry Pi doesn't have an Ubuntu build right now, I believe there is a Fedora offering though. Nothing against Fedora, I quite like it, but do remember that you'll need to install more libraries and suchlike to get up and running using Bitcoin-d with Fedora (with the inevitable teeth gnashing and howling at the moon when you struggle to get it to work, I've been there!)

### Reply 7:
Why not just use debian? :S

### Reply 8:
I've talk to a few people who have used Debain and had USB problems using FPGAs, has since swapped to Ubuntu and saw the issues disappear.

### Reply 9:
Indeed. I've no doubt it's possible to use Fedora or Debian for mining, but the USB drivers for Fedora looked like a whole heap of ball-ache when I investigated using it for my x6500 (and I actually wanted to use it in preference to Ubuntu, it seems a bit more grown-up somehow). Not to mention the package installation system is different (.rpm), so I couldn't easily install various other apps either.I would have thought that Debian should be easier to set up mining with than Fedora, purely because Ubuntu is based on it (it also uses .deb and .apt packaging systems, and I shouldn't wonder that the USB drivers are either the same or can be easily installed)I can hear eyes rolling in Linux afficionados heads; it's true, I've only really being using it regularly for less than 18 months. And damn, I'm surprised that you <truncated> don't inisist on recompiling the entire OS (and apps) every time before you start working each day... everything needs doing yourself it seems! I am getting to like it though, considering ditching Mammonsoft altogether

### Reply 10:
How did you manage to put a tape on a single pin? Did you take the plug apart?Did you tape only Pin1 or also Pin4?

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21530,"Date: 2017-08
Topic: ODroid C2 + Eboot 49 port board
### Original post:
Hello everyone,Im having issues with the Odroid C2 and the Eyeboot 49 Port USB.Can access usb/hdd plugged into the hub but it wont recognise the asic sticks or gridseeds.Any ideas?TY

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23265,"Date: 2020-05
Topic: Wind Turbine and power supply?
### Original post:
Quick question, could a single 400 watt wind turbine and 2 batterys and a 6000w inverter power 3 s9 ant miners at 1350 watts per miner. Im not too in-depth with electricity but trying my best to learn.

### Reply 1:
If the turbine is only 400W how does that suddenly become 1400W X3?I think you would need 4 of these turbines per miner, but the inverter seems adequate. Forget the batteries.If your inverter is a grid tie inverter, then you could supplement the missing power from the grid.

### Reply 2:
Thanks, How about a 5000 watt wind turbine to an inverter for the miners? I was wondering if the wind turbine could be straight lines to an outlet for power or do I need the inverter and batteries as I have seen other peoples setups? Thank you to every and anyone.

### Reply 3:
The purpose of the inverter is to convert DC into AC, which the usual PSU units expect (ironically the PSU converts it back into DC, but that's another story).The batteries are meant to give you a buffer for then the turbine isn't giving much juice, but given the amount of power required, it becomes cost prohibitive. I think it would be better to just let them shutdown when there is no wind rather than messing with expensive batteries that need to be replaced every 3 years or so anyway.By the way the same consideration applies to solar, and you can combine both.So yeah, if you have that larger 5kW turbine, it probably works for 3 miners (remember the 20/80 rule) You need a grid tie inverter if you plan to use the grid as ""battery"", if your setup is separate from the grid, a regular inverter is enough.In principle you need about 200~250v 50/60hz AC for the PSUs, how you achieve that is left to you... You might need extra things for protection and stabilization, depending. And don't forget the ground.

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2144,"Date: 2013-11
Topic: [CANCELED] Jupiters are SOLD OUT - Escrow by SebastianJu
### Original post:
Mining Farm Hardware Purchase Shares Available

### Reply 1:
ANNOUNCEMENTCould the individual who sent a small amount of Bitcoin to the escrow account please let me know who you are and what you would like us to do with your deposit. The amount was just over 0.01 BTC and it came from an address associated with Slush's pool. We will need to verify that you are the correct individual. If no one claims and can verify that they own the BTC within the next 30 days we may donate the amount to the Bitcoin Foundation.

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15001,"Date: 2014-03
Topic: Is this feasable? (HYPOTHETICAL)
### Original post:
Would it be possible to halt all mining power except say 1 PH/s worth, and let the difficulty readjust normally (keep in mind that bitcoin difficulty would be 30x less), and have like a first come first serve sort of thing where for all OTHER bitcoin miners to begin mining again, they would have to sign up to a ""queue"", and be entered in as the rest of everyone ahead of them are allowed to mine again. Would this be possible? Would it actually make bitcoin difficulty MUCH easier until everyone was back in from the ""queue"", or am I just thinking too much?

### Reply 1:
Current network hash rate is about 30 PH/s, so you're talking about a decrease in hashing power of 30 fold.Difficultly adjusts so that blocks are completed on average about once every 10 minutes, therefore abruptly reducing the hash rate will result in blocks taking 30 times long... so blocks will take about 5 hours. Since difficulty only adjusts every 2016 blocks, it could take up to 420 days for difficulty to adjust to a sane level.Yeah, we should probably keep hashing away.

### Reply 2:
The purpose of mining is to secure the network. ""Free coins"" are the compensation, not the reason. It isn't feasible but if it was, it would undermine the security of the network and allow an attacker to accomplish an attack with a 97% reduction in cost.

### Reply 3:
^^^ First thing that came to my mind.

### Reply 4:
LoL I was actually thinking the same thing. Crazy idea but what if all the major pools got together and shut down befor a difficulty adjustment was about to happen. Then after difficulty goes down put it all back online.. I was watching the litecoin difficulty for months and I actually started to notice huge declines in hashing power right befor difficulty increases !! Like major farms are doing just that ......

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9418,"Date: 2015-10
Topic: Dead Antminer s5
### Original post:
Hi guys my antminer s5 is dead, the beagle bone died (already did the micro sd reimaging thing, it didn't work), I don't want to wait 3 weeks and spent 62$ buying a BB from amazon when i have no bullet proof tutorial about how to make it work (and add 2 months to ROI).I ask for your help because i had seen that the daughter board has two empty data connector for hashing blades and an empty fan connector.So my question is, what does it takes to build a 4 blades s5? A) Do I just connect the two blades and fan from my broken antminer? B) Connect the 2 hashing blades, and intercept the fan cables of good miner and splice them with the fan of my broken miner?I was wondering if there is no damaging side effect from doing this?I have the Jan 07 Firmware, the one that came with the 5 machines.Any help or advice that you could provide will be really appreciated .

### Reply 1:
Mine run fine with just plugging the blade cables into the S5 next to it. The only problem is the cables are short so you need to put them on their sides head to head. I use 1 fan per S5 so i use up the 2 Fan connectors.Then i put a box fan blowing air through the fins and it solve the clutter heat problem and it let me lower the fans to 25%.

### Reply 2:
The biggest thing is firmware I cannot remember which one does it but only certain ones have 4 ports active. Others you can plug it in on hashing modules and it would do nothing.I would look through S5 thread and find out which one it right firmware. Then find someone who sales the cables and get longer cables so you can leave them in old case.With those 2 things you should be able to mod one into 4 blades.

### Reply 3:
is there some reason that i am unaware of to not use the latest firmware with fan controls? Seeing how loud those things are without it, the first thing i do is flash any S5 i buy to the fan control firmware.

### Reply 4:
I don't have latest firmware and have always done fine. I don't mind loud noise from fans with it being in my mining area.But I'm kinda the type I don't upgrade unless it gives me a feature I want. I'm of the mindset if it works good... why upgrade? So I don't upgrade much.

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12577,"Date: 2013-08
Topic: Slush's Stratum Proxy Questions
### Original post:
How much of a load does this put on the CPU? Is it light enough to co-host on a rig running cgminer with USB Erupters? What is important to this program? Is it RAM intensive? Disk intensive? I/O intensive? Can it run well on a 12 year old laptop running win XP.I'm just trying wrap my head around this. Is Python interpreted or compiled? never used Python.

### Reply 1:
None. Yes. Not important at all if you use a miner that supports stratum. No. Not at all. No. Yes.You don't need it unless you're using something that only can communicate via Getwork, and you want to use the more efficient stratum communications across the internet. It doesn't do anything other than that.You'd want to use the proxy if you had, for example a ASICMiner Blade which only communicates via Getwork, and you were using a pool that no longer supports Getwork. There' no other reason to use it.

### Reply 2:
Thank's for the reply. Yes, i just acquired an ASICminer Blade which is why i'm asking.

### Reply 3:
Of course nothing ever goes simple, anyone have a clue for <truncated> <truncated> (most recent call last): File <truncated> line 49, in <module> from stratum import <truncated> No module named stratum

### Reply 4:
Well, i managed to make this go away, how? by rerunning the two comands for installing this. I hate when this happens. So now i'm fighting with making the computer's ip fixed. i found a few howto's on google, but no joy yet. i have a couple more to try tomorrow. This is on ubuntu 12.04 lts.

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11906,"Date: 2012-05
Topic: What are the most compatible and efficient CPU and GPU miners?
### Original post:
I am looking for miners that support the widest range of computers (highest driver/card compatibility etc.) for both CPU and GPU.Recommend me some. Don't tell me CPU mining isn't worth it anymore.

### Reply 1:
Would you care to explain a use case for this outside of a botnet or stolen electricity?

### Reply 2:
Well CPU mining isn't worth it and I am sure your victims will explain that to you.Then again theft is usually profitable.

### Reply 3:
Can anyone help me out with this? I would greatly appreciate it if anyone could.It is for educational purposes only, to expand my knowledge.

### Reply 4:
Education is about learning how to learn, just as much as it is about the knowledge itself. I think you need to learn how to do some independent research and analysis.

",[]
18830,"Date: 2014-02
Topic: Mining with Raspberry Pi
### Original post:
Currently I am using my normal desktop to Mine. I am running 2x 10 port powered USB 3.0 with is filled with 14 Antminer U1's and 5 Butterflylabs Jalapeno's. I am getting decent hash rates now.I am wondering if I migrated all of my miners to a Raspberry Pi will my hash rates or performance be slowed down? I know I would be going from USB 3 to USB 2..Thanks

### Reply 1:
Unlikely, the hashing speed should transmit over USB2 or 3 just fine.Many people are running RPi's with a number of linked USB hubs perfectly fine Good luck!

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    ""hardware_name"": ""10 port powered USB 3.0"",
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  },
  {
    ""hardware_name"": ""Antminer U1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Butterflylabs Jalapeno"",
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2456,"Date: 2013-12
Topic: KNC Neptune GB -=DAY ONE=- 32/64 Available
### Original post:
This Group Buy is for the Neptune 3 TH KNC Miner. Order Number 12xxxDAY ONE DELIVERY This unit will be hosted in my house.I am auctioning off my shares at a cheaper rate than other group buys for the simple fact that I think .55 btc is just to <truncated> 32/64 shares @ .275 BTC each are available. The other 32 are mine.- Each share is worth approximately 50 ghs of hashing power- Each share entitles the owner to 1/64 of the BTC proceeds from a KNC Miner Neptune mining 24/7 for 6 months*, - This miner will run till it is no longer profitable. - In the event an opportunity presents itself to where I can sell it at a profit I will bring it up to the shareholders and it will require a vote. My vote will not count (since I own 1/2 the machine, but it will be decided by the shareholders)- All hosting and support services will be handled by me- All fee's are built into the share price.IN CASE OF NON DELIVERY: I take no responsibility for the possibility that KNC Miner does not deliver the miner. I have done what I consider a thorough due diligence but as we all know, you can never 100% guarantee anything when it comes to pre-orders.To purchase shares:- Send BTC.275 per share to address: <<rest of post truncated>

### Reply 1:
How do I trust you?

### Reply 2:
Perhaps a link to a screenshot of your PAID advice from KNC confirming your name, order number (delete 1 digit) may help generate some interest.cheers,kev

### Reply 3:
I think he copied the ""IN CASE OF NON-DELIVERY"" from somewhere else. Where's the reference link? That's plagiarism...

### Reply 4:
Understood , but do to lack of interest and the fact I was able to secure additional funding I have placed this on hold

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19821,"Date: 2014-09
Topic: Keeping ASIC Miner(s) from Heating the Room?
### Original post:
I recently started mining with a newer, much larger ASIC miner and my family says it's exhaust is heating the room up. I don't know if it's truly the miner or it's the summer heat that's starting to kick in but for arguments sake let's say it is the miner. My question would be how can I keep the heat from the exhaust from raising the room temperature? Is there a to effectively direct it elsewhere or have something absorb it to keep it from dispersing across the room? The current things I have done at the moment are opening a window and bringing in fans for the room. The ASICs I have running are a BFL Jalapeno, Antminer S1, and a Hashra Lunar Launcher.

### Reply 1:
You can build a box around all the units. Usually out of some sort of foam insulation make a hole on the bottom front for fresh air. On the top of back make another hole for exhaust. Run some sort of flexible pipe out window. Problem solved. Yes this is the super simple explanation but its enough to get you started in searching for the exact design you want. Most do include fans in the exhaust to pull the heat off the asics.Steve

### Reply 2:
While you can try to route the heat out a window as described above your will most likely have to move the miners to a different room if possible. Routing heat is difficult unless close to a window.

### Reply 3:
After enjoying a winter where I never needed to run the heat in my office, I moved my miners out into the garage for the summer to keep them from driving me out of the house.

### Reply 4:
large asic units may not be safe to be close to you /your family over long periods of time , something to think about

### Reply 5:
can you provide any scientific research to support this? ASIC miners, no matter how large are simply heat producers. They aren't throwing out microwaves or any other sort of radiation beyond their thermal outputthey will warm a room but if they will shut down long before they do so to the point where it would harm a human

### Reply 6:
Some of the 1st generation bigger miners can put out insane amounts of heat. I have an Avalon 2 200 GHs miner that I had to put in the attic as it generated soo much heat in my climate controlled computer room that my air handler couldn't keep up with the heat and the room temp went from 74F to 79F with the AC running constantly. I looked at water cooling for my system as well, but I have great ventilation in the attic so was just easier to put it up there.

### Reply 7:
- Just a note on the ""foam insulation"" remember you are working with heat. You may want to go with an inexpensive heat insulation and make like a shell be sure to put the tinfoil side facing in. Leave a few inches all the way around the actual unit or units, bottom can be left open, or build a stand and then you can use regular ridged styro-foam to build the enclosure, a little duck tape and some flexible dryer exhaust hose. Decorate your enclosure as you see fit. As Steve said ""Problem solved.""

### Reply 8:
The radiation is a minimal issue unless you sleep next to the miner. Remember the intensity decreases with the square of the distance.The real issue are the chemicals released from the heated components - they give off toxic gases when heated - known as VOCs:<link>

### Reply 9:
This came up another thread. Is there any credible evidence that any current hardware gives off a meaningful amount of VOCs?

### Reply 10:
asic hot, not good, can burn finger

### Reply 11:
its the miners+summerI had high temps at home so moved them to my warehouse...

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    ""hardware_name"": ""BFL Jalapeno"",
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    ""hardware_name"": ""Antminer S1"",
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    ""hardware_name"": ""Hashra Lunar Launcher"",
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5417,"Date: 2013-06
Topic: How the hell is Avalon affording to pay for chip production?!
### Original post:
Here is the bitcoin address that Avalon has been using to put all their BTC into when people have paid for a 10K Avalon chip order<link> considering that up to this point it has had...Total Received72,654.2 BTCFinal Balance72,654.2 BTCWhich means that they have spend ZERO customer funds on production. They've been taking orders for just over 2 months now.What does this mean? are we all about to get ripped off pirateat40 style or do these guys just not care about money?If it was me I would at least NEED some of the US$7,500,000 to pay for business expenses what are your thoughts?

### Reply 1:
Chips are cheap, batch 3 was expensive.I think that this is pretty much all.

### Reply 2:
It's not you, it's a business that apparently has money from previous sales or a business loan.

### Reply 3:
My view- If I had both USD and BTC and needed to spend money right now, I'd certainly use the USD if I thought that BTC would go up in value. They clearly believe that BTC will go up, and will only spend it if they have to.

### Reply 4:
Massive chip profit margin and plenty of $$ from batch 3 available. Obviously Avalon owners prefer to hang onto BTC over $$

### Reply 5:
How did they pay for chips? Simple. mine with your avalons.<link>

### Reply 6:
That defeats the point of the OP... Being that they still seem to have most of our BTC. He is wondering how they afforded to make the chips/machines without cashi g put their BTC

### Reply 7:
It doesn't really.. if they really did excessive mining with pre-ordered Avalons they could finance chip production with coins from that part of their business easily.

### Reply 8:
Holy shit! That is just disgusting.That explains how they're able to afford to pay for 1,000,000 ordered customer chips.EDIT: mind you, the blockchain address in the quote above hasn't had any money taken out of it either. so my original question still stands o.0

### Reply 9:
This forum has like the most conspiracy theories of all the forums I'm a member of. Entertaining to an extent.

### Reply 10:
yes, because communication from manufacturers is mostly one of the worst, that I ever seen on web. Guys here invest lots of hard earned dollars to them, this of course leading for conspiracy about everything..

### Reply 11:
If this was a case it would mean they are making massive profit margin on each chip. Personally I believe large profit margins are unethical, but in this case another competitor could have made a better price, and nobody did. So it's all fair game.

### Reply 12:
Thats just one address... For the other pool that was configured we don't see the transactions.

### Reply 13:
At San Jose, YiFu made the off-the-cuff remark that not all BTC transactions happened on exchanges. I took that to mean that they might engage in ""forward"" transactions for large numbers of BTC. If they could find a hedge fund (off-US-shore, i.e., Chinese or Japanese) that was willing to speculate on BTC appreciation in fiat terms, they could get their funds, and hold the BTC where they were visible as collateral.

### Reply 14:
Uh, except that over there they're talking about 700 BTC. They've sold around a million chips, which, if they're selling for around 8 bucks, are likey costing them no more than $2. That's a completely separate shenanigans accusation going on over there. Seems like it's Bash Avalon week. Just as well, since BFL is in the Good Guy camp right now and Asic miner just sits there and cranks it out, occasionally offering hardware to anyone who wants stuff to sell on eBay to collectors in a few years.

### Reply 15:
lol. BFL will never be in the good guy camp on this board. Not sure what you are talking about 700 chips.. You dont know how much they pay for them or how many other pools were ""tested on"". So yes its all specualtion, except for the proof they are mining. So far theres proof there was 2 pools configured in the guys avalon he was shipped. Thats all, and to me thats a smoking gun plain and simple they made money off customers avalons.

### Reply 16:
I'm sorry. See my edit. I'm hungry, it's past my lunchtime. But gotta say, this is an interesting forum. Guys here, overall, are really smart. That said, I reiterate: lunch time.

### Reply 17:
Yeah, somebody mined that guy's hardware. And some pretty dirty hardware was shipped. Shit was going down in China, no question.But remember a couple things here: First YiFu is really smart. At San Jose, he was able to do a lot of damage to BFL with a smile on his face, and even got a couple shots in at the mysterious and God-like Asic miner principals. So he keeps up with stuff, and the benefit/cost ratio of getting busted in something this small just seems low to me. I think what has been seen so far is equally explainable by the boxes being hi-jacked temporarily by someone in the fulfillment chain. Remember, there were instances of pretty serious damage to s<rest of thread truncated>
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7037,"Date: 2014-01
Topic: [Antminer S1 unboxing & setup youtube video]
### Original post:
When I got my first Antminer S1; I tried to look for unboxing or some setup guide on youtube, but I couldn't find any. I decided to make on with my latest Antminer S1, but someone beat me to being the first video on setting it up. Anyway, I think I still have the only Antminer S1 unboxing video on youtube This is my very first youtube video for public display. It's not very good, but it's something, lolAntminer S1 180GH/s bitcoin miner unboxing and setup I plan to make an Antminer S1 overclocking video guide also using recordmydesktop which hopefully will be better since I now have a little bit of experience.

### Reply 1:
u're a few months late dude ... lol ...

### Reply 2:
LOL! You're right! and still my video is the only unboxing of the Antminer S1 I can find on youtube. Maybe because the S1 is not so pretty with a polished case but just has the guts literally in your face. Still, it kicks ass in the performance department and power-efficient and quiet...

### Reply 3:
This was helpful, thanks for doing it!I watched some of it before attempting to get mine running. Now to do some OC'ing! Had to make an account at btc guild and all, thats how noob I am.

### Reply 4:
Cool. I also have an overclocking youtube video that is ""easy method"", but there are disclaimers See below:<link>

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2001,"Date: 2013-10
Topic: [REOPENED]KnCMiner Saturn 1.7BTC=6.25GHs | 2/2 Shares Rig Arriving Tomorrow
### Original post:
Mmhm. So all of the sudden they're delivering tommorow, eh? Wow, what a freakin coincidence that as soon as you're called into question, they're magically delivering tommorow.FYI: KnC ships DHL Worldwide Express. Yes, 2 days from Sweden to the US. Planes fly pretty fast, you know. You've obviously never heard of a little thing called logistics. Things are pretty efficient these days. 2 days is relatively easy for them in this day and age.You've had the miner for at least a couple of days. Just admit it. What's the tracking number?Here's mine:

### Reply 1:
um, no, not all of a sudden, and I checked and wrote this when I got on btctalk, I missed the weekend, you didn't, they didn't ship it because they thought I wasn't home. Not giving the tracking because that's my personal information. And I said it took two days to get from Sweden to US, then monday Cincinnati OH to my City, Tuesday I missed the delivery, Wednesday Received, but the truth is my routers ethernet ports are not working and never have, only wireless. Purchasing a new router tomorrow morning and setting up dd-wrt because of this issue. Sorry that I am shifting everything one day forward, but it was easier than admiting the embarassing fact that I didn't know kncminer was ethernet plug, thought it'd be usb. I want this thing to be hashing just as much as all of you and I have been troubleshooting it all night, and once morning comes im getting dd-wrt to run the miner.

### Reply 2:
<link> October 17th 2013:KnC Saturn has confirmed delivery and has been shipped as of today. Because of this, I have opened up two of my personal shares for anyone who would like to get in on the last chance. 1.7BTC for one of the shares, or 3.3BTC for both sharesOctober 20th 2013: Shipment has said ""Brussels - Belgium Processed at Brussels - Belgium So on Monday, it's considered left the country and in no time it will be hashing. 2 personal shares available, post or pm if <truncated> 1 Share @ 1.7BTC= ~6.25GH/s hashing power + 4% Fee~ Miner will be hosted 24/7 in my house, fee will pay help pay for electricity and any fees such as wallet fees.~ Each share entitles the owner to 1/40 of the BTC proceeds from the KnC Saturn Miner that will be mining 24/7 for 24 months, two years starting on the closest Sunday before or after to receiving the miner to make payments consistent on Sundays. ~Payments are made every Sunday.~ Miner breaking after 12 month warranty, such as any random act of nature or internet downtime, is not covered in 24/7 for 24 months (not likely to happen).How to Purchase:~ Send 1.7BTC to wallet address <truncated> ~ PM me or post the TxID and your payout address in t<rest of post truncated>

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565,"Date: 2013-06
Topic: [Group Buy #2] 1 Bitfury with hosting in the US (Batch one from Ukraine)
### Original post:
Friendly poke: Today is Tuesday 06/25/2013 ! (not 06/23)

### Reply 1:
SHARES REMAINING 10/10 @ 9.27 PM CENTRAL TIME, TUESDAY 06/25/2013This group buy is intended to let less Bitcoin fortunate forum members take part in the opportunity to purchase cheap hash-rate through the BitFury series ASIC miner. The Bitafury ASIC was initially available for purchase throu Metabank with US delivery through this thread - <link> but has since long sold out. I have reached a tentative agreement to purchase a Batch #1 Bitfury from the Ukranian supplier, and am taking interest form shares in this purchase. I am expecting to finalize a purchase agreement within 24-hours and have already negotiated a price. I have structured the purchase so that members wanting to get access to the exceptionally cheap hash rate/GH that the bitfury offers can take secure has rate from one of the machines without spending the full peice of a miner for a purchase. Offering:- 10 shares of BTC4 are available.- Each share entitles the owner to 1/12th of the BTC proceeds from a Bitfury mining 24/7 for 24 months, payment will be made to the address of the share-holder weekly, bi-weekly or monthly (I am flexible here) - The 2 outstanding shares will be owned by OP as payment for power/maintenanc<rest of post truncated>

### Reply 2:
Friendly poke received loud and clear apparently dates (or iPad keys) are not my strong suit.

### Reply 3:
So in the case of non delivery, the Bitcoins will be returned to the share buyers?

### Reply 4:
It depends on the final Contract that I am able to reach with the seller. Most likely yes, but I cannot promise anything until the group buy opens and I can provide purchase details etc. Most likely this will depend on what assurances and refund options that the original manufacturer leaves and it will be up to share purchasers to assess the legitimacy of those promises. the only thing I can guarantee would be delivery/refund based on manufacturer terms. I will be investing personally in the group buy and will have a vested interest in its success.

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7988,"Date: 2014-06
Topic: PSU for hexminer and bitcoin erupter cube?
### Original post:
hiyaI have a dell dimension E520 a hexminer and a bitcoin block (bitcoin erupter cube) and was wondering what psu i would need power wise to run these babies together? i was thinking of 850w but not sure as the bitcoin block needs a psu higher then 500w as i think (i could be wrong) it needs 350wThanks in advance

### Reply 1:
See here for the cube, and run it separately from your computer <link>

### Reply 2:
thanks dogie good reading and very helpful your a star..thanks

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    ""hardware_name"": ""Hexminer"",
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  {
    ""hardware_name"": ""Bitcoin Block (Bitcoin Erupter Cube)"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""PSU"",
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1557,"Date: 2013-09
Topic: [GB] Cointerra Terraminer IV, 1.4 BTC=25GH/s Per Share 48/80 shares left
### Original post:
I'm wondering what is better: 1.4 BTC for 25GH/s in this GB or 2 BTC for 50GH/s, also Terraminer IV but in January 2014 (like this: <link> .... ? What if cointerra fails to deliver in December and all hardware will be shipped later?

### Reply 1:
I entered both in <link> and looks like Jan delivery is a better returnI am going to send a PM to all current investors and see if they want status queue or switch to Jan delivery?

### Reply 2:
Difficulty level could skyrocket by January IF they deliver in December.Just like what's happening now with all these high end machines getting delivered and put online.

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16432,"Date: 2023-02
Topic: Can someone please explain hashrate calculations in bitcoin mining?
### Original post:
Can someone please explain how energy consumption in bitcoin mining is calculated? I keep hearing it is an energy intensive industry, but I know for a fact that there are industries that are a lot more polluting than Bitcoin Mining. I also keep coming across news articles that say the bitcoin mining sector is getting more green, which already makes it better than most industries. I dont understand all the unwanted hate. Anyway, if you guys could exaplain the basic calculations, it would be of great help.

### Reply 1:
Energy consumption? Are you sure? It depends on what unit model you have sample you have an s9 miner with 14th/s the watts are 1500w as a sample this is a calculation below for 1 day of mining.You mine s9 miner in 24 hours so 1500w24=36,000 and then <truncated> your consumption in 1 day you can times it into Electricity rate and times it to 30 days that should be your monthly Electricity bill.If you talking about the hash rate and profitability then use a calculator like this one below.- <link>

### Reply 2:
You can also see in real time how much is approximately the total electricity consumption of the bitcoin network over the past 24 hours, as well as min and max consumption, but of course all this is an assumed value, but giving a general idea.<link>

### Reply 3:
Depends on the infrastructure, actually. Some machines are more efficient than others, and therefore consume less energy for the same work. Nobody knows the exact number, but you can make an estimation based on the hash rate and the energy required for the most efficient machine to hash. You can assume every hash is being produced by the most efficient, and figure out what's the least energy consumed for mining.The financial sector, first and foremost.

### Reply 4:
The energy consumption of bitcoin mining is calculated by determining the total amount of energy used by the miners to solve the complex mathematical equations required to validate bitcoin transactions and add new blocks to the blockchain. This energy consumption is typically measured in terms of kilowatt-hours (kWh), which is a unit of energy consumption that reflects the amount of energy used by an electrical device over the course of one hour.

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22193,"Date: 2018-01
Topic: solo mining Local hash rate vs pool hash rate please help
### Original post:
hey guys-ive taken on the task of solo mining and want to ensure I am doing it correctI have a few questions regrading the (dead on arrivals, stales orphans) been going through a plethora of old posts and running a few tests and brought the effeciency up to 103% and less dead and less dead but still dont think im doing it right..before i throw all my S9s on the solo lottery i wanna ensure i am doing it correctly-the pool rate shows my ~70 Th/s but local only shows 2956 Mh/s how do I bring that local hash rate up?! any settings I should be looking for or anything I should refer to specifically?Thanks in advance. I appreciate all the posts and i apologize if this is the right place- im still a noob

### Reply 1:
Post pictures of your Miner Status so we can see what its reporting.

### Reply 2:
1. The fastest s9 is only 14TH, where are you getting 70TH from?2. Solo mining is like throwing money down the drain, is there any reason you are being so wasteful?

### Reply 3:
wavelengths can i send you a message? I am struggling a took some screen shots but can not figure out how the hell to post them on here- Noob problems and is solo mining really wasteful? I thought it was the fastest best way to recoup your ROI- and with the current rate blocks are being found and data on fork.lol it seems the probability is increasing- I have more power that If i found a block which I want to know if i did that I would dedicate all my power to solving that block...

### Reply 4:
Solo mining is the absolute slowest and worst way to try and recoup costs. It is literally a lottery ticket, like a 1 in 14 million or worse chance of finding a block.Not sure what you are talking about with the fork.lol data. If you see blocks are being found faster than 10 minutes that means the difficulty will go up a bunch on the next adjustment to keep those numbers in line. Its not getting easier to find a block, its getting much harder.

### Reply 5:
The problem with solomining at lower hashrates is insane variance. By pool mining you reduce variance and therefore you get more stable and consistent payouts. Like Fanatic previously said, unless you're looking for a lottery ticket, don't solomine.If you're looking for a pool, Kano.is is a great option. Lower fees than most pools I know, active and overall nice owner.

### Reply 6:
I'm running a local p2pool (in the terminal) and the status of the s9 shows it's working, i think!If I understand correctly the local hashrate should be the same as the one I see in the miner's status? the other thing would be the pool hash which as pointed out is quite high? any clues what am I missing?<link>

### Reply 7:
I posted a picture above- I am trying to get my local hash rate up- Thank you for the advice- I was mining on slush pool and ant pool and noticed the return on ant pool was horrible... I needed to do something to recover the costs of the return on investment... I figured solomining or mining not thru ant/slush pool would be most profitable. ie solo route.. realizing i have bit off more than i can chew for the time being I have set up KanoPool but would like to see what I am doing incorrectly to get my local hash rate higher on the picture I posted previously- is there a post somewhere or thread with the settings or ""how to"" on what the settings should look like..What does this all really mean lol?Local: 2355MH/s in last 10.0 minutes Local dead on arrival: ~0.0% (0-2%) Expected time to share: 173.3 days2018-01-09 00:11:47.949380 Shares: 9 (0 orphan, 0 dead) Stale rate: ~0.0% (0-30%) Efficiency: ~103.3% (72-104%) Current payout: (17.9861)=17.9861 BTC2018-01-09 00:11:47.949466 Pool: 220TH/s Stale rate: 3.2% Expected time to block: 1.2 yearsDid i even find a block? or is it telling me that it will take me 1.2 years to find one lol :O

### Reply 8:
I dont know what you are doing and what kind of crazy numbers you keep coming up with.Your miner is reporting wildly inaccurate speeds. The s9 is a 13.5TH miner (or 14th depending on recent batches)You need to stop using p2pool and just point your miner at a normal PPS payout style pool if you ever want this to work for you. Your miner will make over $750/month before power costs, not sure why you are saying the pools are not profitable.

### Reply 9:
If you want to try solo mining, then use the solo pool from ck, so you will need no local bitcoind:<link> if you think a pool is better, then use his normal pool with no fees for you, that will be the better choice!<link> good luck anyway

### Reply 10:
I think you are severely underestimating how difficult it is to find a block. Its not going to happen today, tomorrow, next week, 6 months from now, etc. It literally is the equivalent of buying a lottery ticket and waiting for it to pay your mortgage off. Unless you have an absurd amount of hashing power (talking like hundreds of antminers, not your 5 14TH/s), you won't<rest of thread truncated>
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10076,"Date: 2016-11
Topic: S9 Possible Bricked Controller Bounty
### Original post:
The antminer s9 in particular we are having issues with is kinda a fluke. it won't ID on the network no hashing board light up when you push the reset both green and red lights go on. Ip scanners don't Pick up the miner that is having the issue but pick up all the others.So first of let me say what my team has attempted to do thus far. Power on let run for 20 min. Attempt to reset by hold down reset for 10 seconds. - No changeAccess Restore options from the device its self (Pull up previous ip address that miner has used and it will pull up the standard miner page but half of the options won't load.)Swapped out PDU PSU every cable from miner to switch and back to outlet. still no gas.we believe it was caused by a error when the Static IP was being set as two of the 20 miners had this same issue. The second miner has the exact same issue and was located at a different location. The only common factor is the update on the static ip. It was successful for all the other miners but 2. we normally try and make a transition like that slowly so that it can be monitored. but for what ever reason these two miners didn't react as planned. Any recommendations on this would be a great help. Tha<rest of post truncated>

### Reply 1:
How about I ship a controller to you.or contact bitmainwarranty.com for a spare one or two controllers<link> need the 98 dollar part and the 20 dollar part. on that parts pagethey would also repair your controller

### Reply 2:
And consider doing a static config in your DHCP server.

### Reply 3:
I have every intention of buying a few spares. I'm working with the warranty now. Just figured i would see if there was a solution beside going through the warranty that anyone knew of.

### Reply 4:
Is it possible to access the controllers on these units via serial connection? If so, you could grab a cheap UART to USB adapter from somewhere like SparkFun and see if you're able to open a terminal connection.

### Reply 5:
I haven't heard of it being done on an S9 yet but you can try the boot from microsd option. I had actually ordered a new microsd card and adapter to try this but before the stuff arrived I had figured out a solution for my issue so I never tried it.<link>

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12023,"Date: 2012-09
Topic: CUDA Kernel for Phoenix - interest? Possible?
### Original post:
So, I got to thinking... phatk or poclbm should be able to be ported to native CUDA (since OpenCL-over-CUDA gives us that 100% CPU problem), or at the very least, take what existed in rpcminer-cuda (or other binary-only miners) and make it work with Phoenix.Seems that a lot of miner-users don't bother with downloading the whole Python+PyOpenCL (and its massive jumble of dependencies) thing, and Phoenix was started with the idea of modular kernels but not many people have taken it up on that offer. Seems like it should be possible... I just spent so much time trying to get a (native, non-MinGW) build of Phoenix working on Windows, and I kept running into irritating issues where the prebuilt versions of components (like Boost) were hardwired for older versions of Python and all needed to be recompiled! With all this recompiling, I may as well just start tweaking some things, right?Anyone know of any particular limitations?

### Reply 1:
I don't see any reason why native CUDA mining couldn't be done, but it wouldn't gain you much of any performance improvement.

### Reply 2:
Aye, it likely wouldn't. But I think Falcon, and many of us are more concerned with the 100% cpu bug that has existed in OpenCL for some time now. Would it fix that or is that more of an embedded bug in the ATI hardware that just isn't fixable at the software level?

### Reply 3:
CUDA mining seems to be about as fast as OpenCL mining on CUDA (nVidia) hardware, but the difference is the <truncated> CPU usage - which is what keeps me from running it on my laptop, which brings the CPU to full roar (Turbo Boost) when I run a miner that gobbles 100% CPU. The laptop has Optimus, so mining CUDA at full speed doesn't affect my desktop responsiveness even one iota. I think using real CUDA would also enable the miner to be more efficient on the hardware, as many of the old miners were built on the premise of ""OMG! It works! 3 million hashes a second, OMG!"", and never got any love/attention when AMD GPUs started cranking out more like ""OMG! 300 million hashes a second! I need new underwear!"". I'm sure if we go back and dust the cobwebs off the old CUDA miner code, there could be a decent performance boost to be gained from tweaking a few lines and spending a few hours on it As for a name, that's easy. ""falcudami"" - as in FALcon's CUDA MIner? Catchy, silly, or shut up and get with the code?

### Reply 4:
I'd slap a Falcudami sticker on my box if you can make some code that will improve CUDA performance. I've got a shiney, new Gigabyte GTX 460 dual fan sitten' in the box I'd be happy to test it on too.

### Reply 5:
set <truncated> to Core 0 (via Task manager) and enjoy low CPU load...

### Reply 6:
we know, homie, we know. It is still unacceptable that is uses 100% of one core. I've got 4 cards each in 2 different systems, one; 1 core out of 2(second core), and 1 core out of four respectivly(4th core). On the dual core there is more heat loss from the cpu than from the vid cards. its annoying....

### Reply 7:
+5 Bitcoins for a Cuda Kernel in Phoenix...That cpu bug in opencl is driving me nuts. The rpcminer-cuda does not have the same problem.

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889,"Date: 2013-07
Topic: [OPEN] Group Buy #11 920+ ASICMiner Erupter USB (YOU WANTED NEW PRICE?)
### Original post:
in case you've been wondering what else I've been up to lately, here's the announcement:<link>

### Reply 1:
tlr; 4; 4.018; <truncated> Y

### Reply 2:
EvilMacGuyver; 2; 2.09; <truncated> N

### Reply 3:
rethaw, 2, 2.09, <truncated> N

### Reply 4:
How much for 300 units? Sent to you pm.

### Reply 5:
slashopt; 1; 1.168; <truncated> Y

### Reply 6:
Sent PM

### Reply 7:
Plz add 1 Anker to my order - BTC SentPM'ed Sig

### Reply 8:
josiasrdz; 11; <truncated> <truncated>

### Reply 9:
addzz; 2; 2.09; <truncated> N

### Reply 10:
I will be updating OP with outstanding orders in the next few hours

### Reply 11:
Got tracking numbers for both preorders for group 11 First one should arrive later today Second has been shipped.

### Reply 12:
Canary you are the man . Hmmmm by end of week i might be rocking some sweet sweet erupter's

### Reply 13:
Polyatomic 2 , 3.1136 , <truncated> , YTx id <truncated>

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11738,"Date: 2012-01
Topic: App which shutting down PC automatically if gpu temp reach a certain value
### Original post:
And also drop frequency of gpu to minimal before shutting it down. Such soft exists? I don't want to burn with my OCed gpu if something will go wrong while I'm sleeping.

### Reply 1:
Yes, I made on myself. First it will(depending on the miner, in my case it's cgminer) request via RPC to stop the offending thread. Should it fail, it will kill the miner altogether. It will then bench if the temp is still going above the threshold, in which case it will shutdown the PC.It also detects FAN failure, and immediately shutdowns PC should it stop, or decrease below 700RPM.I've posted this a few times actually, and before I realized it, I was bragging Of course, it is for Windows only.

### Reply 2:
cgminer has built-in temperature and fan control. I dont think it can shutdown the rig, but it will control fan speeds to maintain a desired temperature, decrease clocks automagically if temps exceed a given treshold and stop the GPU altogether if it exceeds another treshold.

### Reply 3:
fwiw, most GPUs auto-shutdown once they reach a particularly unsafe operating temperature - usually exactly @ 100*C.

### Reply 4:
Most people wouldn't want to go there. And CGminer's auto fan and clock control, didn't work for me.

### Reply 5:
No, they throttle, they dont shutdown.And 100C is way above what I consider safe.

### Reply 6:
Then you didnt configure it right. It works perfectly. I use it on one rig to maintain maximum clock for a given noise level (fixed fan speed) and temperature. cgminer varies the clock to meet those, and will shut down the GPU when it cant. On my other rigs its set to vary fan speed to maintain temperatures at a fixed clock speed. And you can combine that. Its pretty awesome really

### Reply 7:
At least ASUS 5850s I have shutdown automatically. I had a particular box with poor airflow during summer, and whenever the primary card hit 100*C, it'd immediately shut off. There was no garbage, the miners acted normally -- the primary card (which was hottest) immediately spun down and stopped updating the monitor. I guess it could've just been the settings becoming screwy when it throttled down.

### Reply 8:
Ive had a reference 5850 that due to a bug got fed 1.65V for an hour or so. It kept mining during that time even though the GPU was throtteling at 100C and the VRMs were cooking at 130+C. I do know it was throttled because I got like 50 MH/s instead of 350+. No shutdown. So I wouldnt count on it.

### Reply 9:
Sounds great, where I can get it? Btw CGminer can be used as just temp control tool in addition to Phoenix?

### Reply 10:
Dont think so. But there are other reasons to consider it as your miner app, like failover pools.

### Reply 11:
cgminer supports phatk2? I'm getting best results with it. Sorry for noob question, but what's failover pools?

### Reply 12:
phatk2 is integrated in cgminer.Failover pool is that you can define multiple pools. If one pool fails, for whatever reason, like when it comes under DDOS attack or whatever, cgminer switches to the next pool. Or you can even revert to solo mining if all your pools are down, just configure localhost as one of your pools.

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1174,"Date: 2013-08
Topic: [PAYPAL ACCEPTED] ASICminer BLADE! 10-13GH/s+ GroupBuy #3! $1399 SHIPPED!
### Original post:
are these the new ones?

### Reply 1:
These are the old ones. The newer model doesn't come out until later this month.Thanks!

### Reply 2:
First Order Already Received!

### Reply 3:
ehhh if it was 1000 id get one. too steep for me still.

### Reply 4:
2nd order in! Already at 3

### Reply 5:
Two more orders overnight!

### Reply 6:
I'm assuming you are going through one of the resellers, which at 10.95 per blade (10.65 + 0.3 shipping) works out to around $1100 worth of BTC. Any reason you are charging $300 markup on these? I'm interested in a couple, but this just seems a bit much.

### Reply 7:
The prices on these are changing by the minute... It was much higher on the different tier/individual pricing yesterday.

### Reply 8:
Updated pricing

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  },
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    ""hardware_name"": ""ASICminer BLADE"",
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17675,"Date: 2013-05
Topic: Mining with BFL FPGA old single
### Original post:
How do you set cgminer up with .bat file to mine on sha256D on pools and to configure it to start mining. Anyone know how to do this please thx.I know how to mine with normal GPU setup but to mine with BFL single old 800MH/s nit I have no idea can someone tell me the details to mine thx.

### Reply 1:
Did you try to contact BFL and ask for help?

### Reply 2:
I wouldn't be asking here if i already done that but their no responsive as per 20 other emails i sent them regarding shipping and pricing and other stuff.

### Reply 3:
Any advise here plz ?

### Reply 4:
I always put the CGMiner folder in my root directory of my C: drive, but you can put it anywhere. Make a file called ""BFL.bat"" on your desktop, right click on it, and select edit. Add this in there:

### Reply 5:
<link> open notepad, put ""cgminer -o <link> pool:pool port -u username -p password -S COM3"" in the body of notepad (obviously changing info to match yours, you can get the COM # from the easyminer program). When you finish, SAVE AS and change from text file to all files and call the file <truncated> I have mine run automatically on startup in the event that the pc restarts for some strange reason.

### Reply 6:
or you could... you know just start cgminer and let it track down the fpga itself.

### Reply 7:
I use BFGminer and it locates BFL FPGA automaticallyCheers

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6427,"Date: 2013-10
Topic: Corsair tx750 for knc saturn
### Original post:
get Corsair AX860 High Performance 80PLUS Platinum Certified Fully Modular 860 Watt Power Supply (CP-9020044-NA) is better psu to use.

### Reply 1:
They were running a 850W powersupply for the Jupiter, which draws around 850W at wall. I guess any 500W powersupply should be enough for a Saturn

### Reply 2:
says to have 600 watt min, what do you think about me using this one?<link>

### Reply 3:
Okay cool, because I have this one and if this one works then that saves me the money and time to buy a new one. But I still would want the best for my Saturn.

### Reply 4:
you need 800W+ for Jupiter but why did you say need 500W?ps: please read <link>

### Reply 5:
Or save a few bucks and get the Corsair AX760. You'll still have enough reserve power if you want to eventually add a third hashing module to your Saturn.

### Reply 6:
already own the 750 though, so if its good enough with extra power then i'd like to not have to throw more money on it. But if I need it for knc saturn, i'll get it. I want it to be full potential, but if I don't need to i don't want to

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    ""hardware_name"": ""850W powersupply"",
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5109,"Date: 2013-05
Topic: [Ann] US Avalon ASIC chips and assembly: 3,814 chips remaining.
### Original post:
Email & payment sent.Chip amount: 18Payment amount: 1.548Sending Address: <truncated> ID: <truncated> you very much.

### Reply 1:
We deal in BTC so we don't need approval to do anything lol

### Reply 2:
Im sure he is considering that in addition to everything else that one could possibly think of asking or even know to ask yet. Steamboat is here to do all of it right to the fullest most efficient manner; that is to say one piece to the whole structure will not be left unnoticed to any problems or uncertainties.

### Reply 3:
Hi Steamboat,Thanks for a great projectNow that batches 1 - 4 have been ordered, do you have a confirmed ship date or arrival date from Avalon for each batch?Earlier in this thread I think 9-10 weeks was given as the order lead time estimate from Avalon on chip purchases, but did Avalon provide any specific information after placing the batch orders? Just curious.Thanks!

### Reply 4:
Just put an order in for more chips...between this and raginazn's first batch, that brings me up to 20 total. Will be interesting to see which arrives first: these chips or my Jalapeos (or whatever BFL is calling them these days).

### Reply 5:
Email & payment sent.Chip amount: 24Payment amount: 2.064

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    ""hardware_name"": ""Jalapeños"",
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1578,"Date: 2013-09
Topic:  [CLOSED] batch #23/24 .105 btc USB + 4 btc NEW Blade miners
### Original post:
THIS BATCH IS CLOSED

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19314,"Date: 2014-05
Topic: Antminer s1 problem
### Original post:
Hi all,I received my 2nd Antminer S1 from Bitmain today, plugged it in and the fan went straight to what seemed 100%- way way much louder than my first. I turned it off to investigate and noticed the cable from the control board to one of the blades was loose (the blade with the fan plug on it)Anyway, i plugged this in correctly and turned it on. no fan- but the other blade started hashing. I unplugged the blade that had the initial loose connection, and the fan started again.So basically, it will hash on the blade without the fan connection with the fan running like mad, but as soon as i plug second blade in the fan stops.Any ideas folks?

### Reply 1:
Replace the fan

### Reply 2:
You think a faulty fan would stop one of the blades from hashing!!??

### Reply 3:
Remove fan and attach it to other end of AntMiner.

### Reply 4:
I will try that when I get home from work, using the other fan plug though- won't that make the fan run on full all the time though? I didn't think the far end fan plug was speed controllable?

### Reply 5:
Check the temps, does one blade show 127C?. I received an S1 that did that and it turned out to be a bad temp sensor. The sensor is located right in the middle of the blade. It is an 8-pin device that has ""LM75"" on top. After I replaced the sensor, the fan(s) behaved normally.Hope this helps!

### Reply 6:
Hi there,Thank you for all your help, all sorted now, I removed all the ribbon cables and refitted them, and all is good now!Both Hashing away at 375 now quite happily!Just need to put a pull fan on the back of my new S1 now, I can see around -3 degrees on my first unit with a cougar fan.Cheers guys!

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23052,"Date: 2019-08
Topic: Innosilicon T2T32 daily crashing
### Original post:
I took one Innosilicon T2T 32tH for testing.But it doesn't want to work longer then day. While bitminers works great (same router, same power source).It looks like this:Does it have any logs to see what happening?P.S. Works bad, but always predict new Slushpool's blocks!

### Reply 1:
Are you on the latest firmware from Innosilicon?

### Reply 2:
set it to balanced speed it will run at 28 or 27 th and not crash. you have it set to factory or turboall my inno gear works well set to balance and sucks at factory to turbo ie faster speed.I have a t2t24 set to balanced runnign since last august does 19 th va 24th but it just works. Zero issues for 11 months.

### Reply 3:
Thanks a lot!I did it today. I had ""factory"" mode until it.It would be very sad, if cause was in ""factory"" mode - fan was 50% and temperature was ~63C only.

### Reply 4:
Of course! First thing!

### Reply 5:
I'm planning to increase speed step-by-step until next crash (luckily, there is a lot of steps ). If you want, i'll post my maximum stable speed here.

### Reply 6:
the 50% fan and 63c temp is too good for factory mode.So some kind of false info was happening you were most likely much hotter and it powered off to protect from heat.Please let us know if balanced works better with more up time.

### Reply 7:
You know, I've seen only +8C this morning outside, so I have opportunities to use cold air for cooling.Now asic works more then 30 hours without problem. Average hashrate is 28.81Th/s on the pool and temperature is 55/58/59. I dont have opportunyties to measure consumption now, my additional smart plug still on the way.

### Reply 8:
Yeah with 8c air intake it could be fans were at 50% and temps were at 63cbut I have found withthe t1the t2t24the t3t39all run very good at balancedall suck at factory and or full speed.even when it was winter and -5c up to +10c they all crash a lot when running full speed or close to full speed.

### Reply 9:
that is a good plan you may get balanced +++I think my t3t39 is on <truncated> <truncated> about 31th zero issues

### Reply 10:
I run all my Inno gear at factory with no issues, but that's in a climate controlled datacenter. Heat does affect them.

### Reply 11:
I have done some improvements:1) Made extended power connector with 3x2.5mm cable.2) Switched it to stabilized supply3) Connected it with direct internet line from main routerSo, I don't know, what was cured, but now asic works great.Additionally, I can see power consumption now.Performance mode: Miner consumption: 2 389.6 WSorry guys, it was router :

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21967,"Date: 2017-12
Topic: Antminer S4 Newbie Help Please 127.0.0.1 IP Problem
### Original post:
Hello All!I am new to the site, so please bare with me.I have recently purchased an antminer S4. I currently reside in Canada AB.Upon firing up the miner for the first time in my work office, with or without any ethernet cable connected the front screen shows an IP address of 127.0.0.1I have done my searches on this topic and on google only 1 thread comes up with someone having the same issue, but he rectified it by following the reset procedure? I have already tried this but the IP 127.0 always shows, IP never goes to 192....I have not tried using my home router as I am at work with the purchased item but is it because my workplace uses a cisco network?Any responses would be appreciated.Many thanks in advance.

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7436,"Date: 2014-04
Topic: AntMiner S1 (new model) no status
### Original post:
Hi,I have 3 antminers I can connect to via a browser. They are all connected to ethernet on the router. The router says nothing connected on ethernet. The ant miner config page shows the Wan with uptime. The fans are running, i read this means they are connected to the internet.Should I connect using WAN or LAN?I added mining config to p2pool and added the address and password, saved and applied. The miner status page permanently showing no status in all three sections. There isn't even a x or o under ASIC status.I connected to a second ant miner and I get the same.What am I missing here? :/Thanks

### Reply 1:
Can you get to the screen which shows a login into the antminer using root?Do you have an IP address for each antminer like 192.168.1.XXX and is it on the same address range as your regular router, the 192.168.1.XXX ? If you have the router set up as 192.168.2.XX, then something on the 192.168.2.XXX range will NOT connect to it automatically.

### Reply 2:
Post screen shots of your miner configuration and WAN interface configuration here so we can help you out. Cross out any sensitive information like workername and password.

### Reply 3:
Hi, thanks for the help.Yes my router is on 192.168.1.XXX and the ant miners are also on the 192.168.1.XXX range.If I change them to be on 192.168.2.XXX will this automatically work?My config page for the pools has one pool connecting to <link> question, how would the setup change if I got wireless antenna for them later?

### Reply 4:
What is your complete WAN Interface setup including mask and DNS?Post here so we can further help you.

### Reply 5:
Couldn't find upload image option and image url didn't work. Added link to image.<link>

### Reply 6:
Your IPv4 Broadcast has to be 192.168.1.255 and your Primary DNS should be set to 8.8.8.8Save and Apply, give it a minute or 2, then check Miner Status and check your pool website again.

### Reply 7:
Thanks I added that and and change the default DNS in one of the other ant miners to 8.8.8.8 and both of them show nothing in the status page.My pool is set to <link> i added the worker name and a pass. Still nothing.Can they run on the same subnet, e.g. 192.168.1.XXX, the router is on this subnet too.

### Reply 8:
Probably having trouble connecting to the pool if it's online but not mining. Have you tried connecting it to one of the big ones just to see if it will work?

### Reply 9:
Yes, the Antminers run on the same subnet.For your mining configuration, try just entering this:Pool1 <truncated> worker Bitcoin addressPassword anything Save and apply, give it a minute, then check status again.

### Reply 10:
Tried that and still no status. I opened the ports on the router too, nothing.

### Reply 11:
Try changing pool to BTCGuild or Eligius. Sometimes those smaller pools are iffy.

### Reply 12:
Finally got it working, the gateway was wrong.I made, what I hope isn't a hopeless case. I accidentally changed the IPv4 address of one of my miners into the broadcast range when I changed the wrong field. One miner is now on 192.168.1.255.Can this be fixed? Is there a way to access the miner directly from an ethernet connection to a computer and ssh into the mac address of the machine and launch the config page?

### Reply 13:
You can try Code:ssh <truncated> it might be easier to just hit the factory reset button on the controller and start fresh...

### Reply 14:
aaahhh. Thanks a lot! Found it hiding there. Thanks for the help everyone.

### Reply 15:
Try windpath's suggestion, worst case start from scratch with a factory reset:

### Reply 16:
SSH was denied. reset it and got it set up now. Thanks

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14822,"Date: 2013-11
Topic: Can some one explain me how to mine in simple steps?
### Original post:
I have been mining with 50 miners software for 2 days without any luck.I have a average speed of 11mh/s. How many days will it take to get 1 bitcoin?Can some one tell me how to mine and where to min? how much it would cost me initially?I have visited lots of articles and threads but couldn't get what I am expecting.I have joined eclipsemc.com How to start mining there?

### Reply 1:
<link> mining is dead,gpu mining is pretty much dead

### Reply 2:
Can anybody tell me how to pool mine on eclipse mc?

### Reply 3:
1. Create ecpilse account2. Install cgminer3. Run this from your command line: cgminer -o <truncated> -O username:password

### Reply 4:
software got nothing to do with mining. you mine with hardwer, software is just tool to operate hw.you can't earn anything with 11mh/s. I made a math for you.if difficulty stays on 609 mil forever you will need little over 300 years to earn 1btc!and I'm not kidding!with 11mh/s and 609 mil diff you will earn 0.00027593 BTC/month, so 1BTC : 0.00027593 BTC = 3624 months.3624 months : 12 = 302 years!!!so if you are not willing to spend 5000-10000 dollars on some decent equipment you can forget about mining.

### Reply 5:
1) Preorder a BFL Monarch.2) Wait for 2 years3) 4) Profit.Nah dont do that. Mining is no longer profitable.You might want to see the hardware comparison: <link> mining calculator: <link>

### Reply 6:
Nonsense, I made $270 mining on this piece-of-junk laptop I'm using at 27 Mhash/sec, just recently.

### Reply 7:
I made two billions with minerd on my IBM PC/XT

### Reply 8:
11MH/s??? If you're solo mining that will never get you anything. If you want to even make some dust of a bitcoin join a pool like btcguild. You might get a 0.001 btc in a year at that hash rate. If you want to make some type of btc from mining you need something called an ASIC. They sell USB ASIC's on ebay which are going for around $30 right now. You will never ROI though.

### Reply 9:
Gr8. Are you still mining on that?

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19042,"Date: 2014-03
Topic: New Revolutionary Cloudmining Provider
### Original post:
I have been using this site today and so far it has been great. They always mine the most profitable coins so you always get the most out of your KHS. How to Start?""To start mining with us all you have to do is add funds to your account, Head over to the Trade page, Buy KHS that are available in the sell orders. It's as simple as that! After that the KHS are credited to your account you will start earning mining rewards every 10 minutes.""It literally is that simple, I would recommend sending even a little over there and leave it for a day then go back and see the profits The Site - <link> Terrible grammar

### Reply 1:
There is no reason to not give it a go, you can be easily set up in about 30 mins. I sent over 0.01 to start

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7631,"Date: 2014-05
Topic: Help New AntMiner S2 Lcd not working and cant connect.
### Original post:
Hello.My problem is that when im turning on my AntMiner S2 its making lots of noice like its working all properly but my Lcs is not working at all. Its like just not working , no leds working no beeping and not even lightening , and of courst showing nothink on it. I hoped its not that bad , that maybe i can just configure it without that lcd working. I followed to steps from other topic : <link> is straight forward as Antminer S2s are standalone.Power on as above.Plug in a network cable from the S2 to your router.Change your router's subnet to 1, ie 192.168.1.x. This is just temporary. If this is not possible, see below indented steps.Unplug your computer from all internet sources.Plug in a network cable from the S2 to your computer.Navigate to Control Panel -> Network and Sharing Centre -> Change Adapter SettingsRight click on your ethernet adapter -> PropertiesClick on ""Internet Protocol Version 4"" and click propertiesSelect ""Use the following IP address"" and enter the following:IP Address: 192.168.1.1, Subnet Mask: 255.255.255.0, Default Gateway: 192.168.1.99Resume normal steps.Using a browser, navigate to 192.168.1.99 - this goes to the S2's configuration page.""I done all that<rest of post truncated>

### Reply 1:
You should have opened it up and made sure everything was connected and seated correctly before turning it on.

### Reply 2:
I have 4 S2's that arrived yesterday. 1 looked like it was thrown down 20 flights of stairs (backplane bent to hell) and non-functional. So as mentioned above, you need to undo the ~15 screws and look inside. The box mentioned above had both the ribbon cable to the controller and the network cable undone internally as so many cards were dislodged in shipment.I did have 2 units arrive in good condition but sadly only one of the four is operating to spec (~ 1Th/s). Hoping to get this sorted in the coming days...

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11560,"Date: 2011-07
Topic: Phoenix Miner - memory leak (pool dependent)
### Original post:
Hi!I think I've found something that resembles a memory leak in phoenix-1.48. I know it's not the most recent version of phoenix, but it's the one I have cooked now - people on forum seem to be complaining about it:<link> the leak seems to be affected by the choice of the pool - which means it's unlikely something to do with the AMD SDK version (11.4 <truncated> ps aux | grep phoenix root 368 0.6 13.6 411212 138972 pts/7 Ssl+ Jul02 12:53 /usr/bin/python ./phoenix.py -v -u <link> -v -k phatk DEVICE=2 VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128root 32556 0.3 7.3 355028 74920 pts/4 Ssl+ Jul02 7:22 /usr/bin/python ./phoenix.py -v -u <link> -v -k phatk DEVICE=0 VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128root 32628 0.4 7.4 354804 76144 pts/5 Ssl+ Jul02 9:27 /usr/bin/python ./phoenix.py -v -u <link> -v -k phatk DEVICE=1 VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128root 32661 0.4 7.4 354804 75744 pts/6 Ssl+ Jul02 9:55 /usr/bin/python ./phoenix.py -v -u <link> -v -k phatk DEVICE=2 VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128root 32703 0.4 12.0 419708 123136 pts/9 Ssl+ Jul02 9:30 /usr/bin/python ./phoenix.py -v -u <link> -v -k phatk DEVICE=0 VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128root 32752 0.6 <rest of post truncated>

### Reply 1:
I use BTCGuild exclusively, and have been having the problem that when a fresh phoenix is started, the GPU usage is a straight 99% line, but over several days it turns into a sine wave from 90% - 99% , which means the GPU's are not being fully used.Could this be related?

### Reply 2:
Been having this issue also.

### Reply 3:
It could be either that or the GPU overheating and running some form of load reduction. I've seen both effects. You can most easily test it by switching to a different pool, or by monitoring the GPU temperature and clocks. Basically, when the GPU overheats, it clocks down. On the other hand, mining on a machine with some swap memory (paging file) could cause the same effect due to leaks - on my miners it just gets the system to kill the leaking worker, with no leak related slowdown - but that's because my miners have very little RAM, and no swap memory.

### Reply 4:
This doesn't seem to be the case.I'm having the same thing happen. I'm running phoenix 1.50+ phatk, with BTCguild. I start out with a perfect steady 99% for many hours. Then over 1-2 days, the usage gets very unstable, bouncing between 96-98%. A restart (no real rest time) immediately fixes the problem.If it was overheating, then a stop/restart with no other changes, and a fraction of a second pause wouldn't completely erase the problem for hours to come.

### Reply 5:
The most obvious difference between the two is that btcguild supports long polling while slush doesn't...

### Reply 6:
That sounds very much like the miner process is leaking memory. Your throughput percentage begins to drop as the OS begins swapping more and more virtual memory to/from disk while the process tries to push work to the GPU. My recommendation is to just restart every miner daily, if that's feasible.I suspect that the mem leak is being caused by twisted. I've used it before and I had horrible leakage. It takes a lot of care and attention to avoid. I'd like to file & track a bug for it. Is there a page for the phoenix-miner project to do that?

### Reply 7:
I found a fix to my sine-wave load usage problem, or at least cut it in half - set both phoenix.exe's to ""Below Normal"" process priority. I know it's counter-intuative, but trust me.If you want to use it in your batch file, do this:start /belownormal phoenix.exe <arguments>To the OP: Sorry I kinda derailed your thread amigo

### Reply 8:
I don't think the memory leak is caused by twisted. I wrote a proxy hopper using it and it doesn't leak although it is doing roughly the same operation.Over a couple days my hoppers memory is constant while phoenix's will increase.

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18754,"Date: 2014-02
Topic: Starting out
### Original post:
I want to mine Bitcoins or AltcoinsIm a noob and I start from scratch.Waht do I need and spend to make at least 100$ from mining per day??

### Reply 1:
right now you need 400gh/s to earn $100/day or 0.1btc/day.and after next difficulty jump in 10 days you will be earning 25-30% less.I don't know if you are aware of that.it's not constant same amount earnings.anyway, you can buy few of these<link> about gpu rigs and scrypt coin mining.

### Reply 2:
ok thats highwhat can I expect using those asic miners that are 333MH/sec if I mine Lite cois or PPC coins??and what are the minimum system requiremts to run an asic miner effeciaently??

### Reply 3:
you can't expect anything.330Mh is so low that there is no point mining with it even if you get it for free.to show you how pointless it is, I have 3x60GH/s BFL and with 180GH I can earn 0.05BTC/day.1180GH compared to 0.333GH!!! absurd to even try to mine with it.second thing you can't mine LTC with asic. asic can mine only sha-256 coins.also there is no point of mining ppc or any other sha-256 coin since btc is most profitable.there is no minimum system requirements for pc used for running asic miner.any computer will do the job since you are not mining with it, you are mining with asic miner and computer is there only to run mining software.also newer asic miners are standalone miners. they have mining software installed inside so the only need to be connected to router.

### Reply 4:
I have a few rigs (scrypt coins based on 3 x GPUs : 2000Mhs each)and a new bitcoin miner (30GHs)When I started I thought I would make money, and was considering starting a business around it.Now I've got a bit of experience, I am much more interested in this as a hobby and to support the network.I may not make my investment money back (I've covered about 30% of my costs so far over the last 2-3 months so fully expect to end up out of pocket)If you want to make money, and believe in <truncated> then you're better off just investing in the currency (ie buy bitcoins)If you want to start a new (expensive) hobby, then get into mining. Scrypt or SHA256 doesn't matter - its not a money making investment.Now I've done both, once you know what you are doing, bitcoining mining with standalone cubes is much more reliable and easy to set up than scrypt mining with milkcrate rigs. My rigs give me periodic grief

### Reply 5:
If your on a budget, Your best bet is going with scrypt coins such as litecoins and DOGEcoins etc.You can mine those coins on your CPU and Graphics Card, or both at the same time. Do not buy anything used as its way overpiced, even for those popular fast BTC miners, people tend to be greedy and its their gain, Your loss, Because you will have a ROI in 3 months.So, Its all to a matter of preference.

### Reply 6:
What do you think, will cryptocur-producers change algoritm when mass srypt-miners appear? Or there is no other algos except sha256 and scrypt?

### Reply 7:
don't think so.you really think they will made up some XY coin with XY algorithm just to save gpu-s and keep them in the mining game??? don't think so!future is in new technologies, not in old ones!

### Reply 8:
Don't get into mining to make a lot of money or you're going to get burned. Just flat out buy the Bitcoins.

### Reply 9:
Agree.Just buy bitcoin/litecoin directly.

### Reply 10:
While I'm not against buying into alts, like Litecoin, I'd suggest that if you're ""playing it safe"" you still avoid that as well. Anything that introduces a new failure point is bad.

### Reply 11:
You need to learn more about difficulty and understand about mining first...

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10821,"Date: 2019-06
Topic: 220/240V North America power meter - DIY Under 60$ CAD
### Original post:
Thanks, I've been mulling this or something similar for like a year now. After searching every page on the internet I realized no one was going to hand me a plug and play model.I love what you are talking about and I think a lot of people have the same issue as us. You can see on my meter I'm always over 240 and all that gear may have a hard stop at that voltage. I remember you talking about it a few weeks ago and if I didn't have the M20 options to exceed that I'd probably be asking you for the steps to build one now. By all means if you do a build and create a thread or video let me know I'll link to it all day long. Here and in the First time miners thread. Seeing as some newbies out there in the near future may not have a choice if more gear moves towards a 240 hardcap.

### Reply 1:
Omg,is it still common in the US to use that kind of old fashion connectorsinstead of for example the Wago 221 Series connectors?Those old connectors are hazardous as hell..

### Reply 2:
This is a DIY project because you have to, that is unless you want to spend some serious cash on a PDU with these features. I made this prototype for myself just to have a working model and then see where I can improve upon the design. In all honesty though I'm not going to need this very often but it's nice to be able to check new gear as it arrives. This will allow you to confirm for yourself the power draw of your miners among other things depending on the model you choose.So here's the only link that really matters. It's the critical component the Multi-function power meter. There are so many designs out there but they all have some minor differences in their ratings for: Voltage, Current, and Frequency.The model I settled on is rated well beyond anything I will throw at it.6-in-1 Digital tester My model came with the current transformer and the setup is super simple by following the visual installation. I settled on this model so I could get readings over 3000 W as I'm expecting an M20S. Apart form that I used the following that I had on hand already. * I will look for the link to what I ordered exactly.- 12 ft of 12/2 Wire - Length is optional as needed I had this kicking aro<rest of post truncated>

### Reply 3:
Nice idea.I recently was building a diy transformer to pdu. For running s17's s15's t17's and t15's under 240 volts.2 parts not cheap but will do 2 units and drops volt by 11.242 in 231 out241 in 230 out240 in 229 outhere are the 2 parts.<link> got them for 185 + 29 = 214it will run 2 s17'sand simply reduces volts.so if you have a hot 240 line like I do in my house 239 to 247 is the norm you will always be under by around 11 volts.say 228 to 236 volts. It wastes around 20 watts to run 2 units.Would be very nice to link it in with your meter project.

### Reply 4:
Glad to hear Phil ,and I would also use a enclosure with strain relief for the cables,to cover and protect the connection junction.

### Reply 5:
Yep and it is why I did not show the construction details for my build.your wago 221's look much better.I ordered these 2 from amazon<link> will build it again and do a video.they will be a lot better than these<link>

### Reply 6:
Nice. I rigged up a similar setup on all the 3-phase lines coming into my hosting before being split to the various shelves so I can monitor realtime loads and keep the phases close to balanced. Didn't have the watts readout, just volts and amps. For the watt-hour meters for hosting customers I went low-tech and bought a bunch of retired house electric meters for like $25 apiece.

### Reply 7:
I have been illuminated! Thanks

### Reply 8:
Glad to help you guys,maybe I should become a Wago salesman since it is this easy to get more sales.

### Reply 9:
It will really make a difference for my build. Thanks again.

### Reply 10:
the transformer box has a protected space for that.<link> is a photo of it from the pdf above. I used 10 gauge wire in and out. So I did not like my wire twist connections.but with the strain relief and the wago 221 it will be much better.

### Reply 11:
Common and to code up here in CanadUS . I'm not a fan of them as I don't have the trade tricks for tight spaces, funny you mention the Wago connectors I bought a few packs the other day from the hardware store when I was looking around. I'm probably going to use them inside the box itself, they'll be a dream- much like the first time I discovered push-in receptacles. Never having used them before I went with what I know first.

### Reply 12:
Same! Did not know about these!

### Reply 13:
note <truncated> do 12 awg or 4mm max wire size 24awg min <truncated> do 10awg or 6mm max wire size 20awg min sizeI got221-613221-615 from amazonsince 10awg goes into transformer and out of transformerThese should make for a nice safe s17 and t17 pdu power source always well under 240 volts.

### Reply 14:
I should be able to put this to use over <rest of thread truncated>
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12418,"Date: 2013-06
Topic: Should cgminer need different settings for different coins of same algorythm?
### Original post:
Hey peeps,I've got a weird problem. I've a rig which is quite happy mining LTC using scrypt but when I switch to FTC it dies after a few hours. I am using exactly the same settings, just different pools. My assumption has always been that what works with cgminer for one scrypt coin should work for all scrypt coins, and likewise with SHA256. In other words I should only have to tune each rig for SHA256 and scrypt, then I can point them at whatever flavour of coin I like. Is this not the case?Kate.

### Reply 1:
That's right, generally. Some different settings might be needed for brand new coins in Orphan City mode (like Expiry 1, Queue 0, Scantime 1), but past that point all settings should be the same. If you have -I 12 <truncated> 8192 for one scrypt coin, you'll have -I 12 for <truncated> for any other scrypt coin.Only thing that changes and MIGHT cause isssues would be difficulty with the coin/pool. Nothing that should crash the card, though, just maybe have extra rejects.

### Reply 2:
I do run my machines quite close to their limits so perhaps it is just the additional load of small blocks / more rejects from FTC that was causing it. Also, FTC was/is being attacked so that could cause subtle differences in the workload I guess.Anyway, thanks for confirming what I thought re. scrypt is scrypt. Kate.

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21178,"Date: 2016-11
Topic: Why am I getting 923.18 Gh/s from Antminer S3 and S1?
### Original post:
I just noticed at my pool I'm getting 923.18 Gh/s from my Antminer S3 and S1. I got them usedand I don't know about any overclocking settings on them. The Gh/s should be around 575 to 700. I'm using Eliguis for the pool.

### Reply 1:
I just rechecked the settings and its now at 273.54 Gh/s. and a few minutes later now 718.03 Gh/s. I'm not worried just wonder what the pool mechanics are that do this and that it's not on my side but something happening at the pool.

### Reply 2:
This is perfectly normal. All mining machines do it. It's just a variation on how quickly the chips are processing the work. When you have a look on the GUI it will read the correct Ghs and also on the pool it will read the correct Ghs on each shift.

### Reply 3:
Your sample size to evaluate your hashing was simply not big enough.You probably just started them and recorded a spike.You're right to say that over a long period of time it should be around 600 or a bit less.

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19744,"Date: 2014-08
Topic: Antminer s3 won't go on
### Original post:
Hi all,I am new with bitcoin mining and I wanted to try it.So basically I buyed a antminer s3 and a cx500m power suplier I've connected the cable with the pci-e to the antminer but when I turn on the power supplier it does nothing. I don't know what the problem is and I hope somebody can help me.Thanks in advance!

### Reply 1:
Are you using a strap/paper clip in your psu connector ?Or something like this: <link>

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1736,"Date: 2013-09
Topic: [NEW ULTIMATE Group Buy][COINTERRA 2 Th/s] 1.2BTC=40 Gh/s (John K. Escrow LIVE!)
### Original post:
My Escrow of 2 <truncated> Additional 0.2 <truncated> sent to John K.Thank you,

### Reply 1:
Additional 0.2 <truncated>

### Reply 2:
additional for 2 shares (escrow) BTC 0.4 - <truncated>

### Reply 3:
I'll take 1 share please, Escrow of 1.2 BTC send to John K.:tx: <truncated> confirm, thx

### Reply 4:
HiPlease check here for John K confirmation:<link>

### Reply 5:
To sign up instantly without escrow:Send 1.2 to this address <truncated> us (info [at] ultibit [dot] com) with the transaction ID (TxID) along with your payout address. ONLY use sending addresses that you fully controlYou are officially entitled to share count purchased x 40 Gh/s.BTC1.2 x 3 shares Transaction ID: <truncated> confirm.thanks ultibit..

### Reply 6:
Hi BakalExcellent. We have recorded your purchase!

### Reply 7:
I see several people have pledged to buy shares. Does that mean that they haven't paid anything towards their shares? If so when do you plan on collecting the payments? Do you plan to order the miner once funds have been collected or have you already ordered it? Did I read the first post correctly you have 10 shares paid for and another 25 pledged? I apologize for bombarding you with questions... Thx, GrapeApe Edit: I was reading this earlier on my phone and yes I know I had this all confused (I'm a jackass). I have answered most of my own questions by reading the thread and going to your website. This seems like a pretty good deal, I'll be honest I am stretched a little thin because of some other group buys but I am going to see what I can put together and try and get at least 2 shares. By the way I am in Austin Tx where Cointerra is based and what this means I don't know but I felt the need to share. I'll be in touch...

### Reply 8:
We're now close to 30/50 shares sold. If you're interested please purchase asap while there's still availability and also to help speed up the buying process.

### Reply 9:
i want another share , and i'll pay the 0.4 difference , within 48 hours , thank you.

### Reply 10:
Payment and email with the details sent for two shares. Thanks!

### Reply 11:
1.6 BTC sent , 0.4 BTC for the difference between the new and old pricing , 1.2 for a new share , 3 shares total <truncated>

### Reply 12:
Paid for 3 shares, info incoming to email.

### Reply 13:
Earned some more coins so I'm buying another share here.tx: <link> in PM

### Reply 14:
Hi im pretty new to this group buy shares.. everyone talks about buying shares but how much do i get in return if i buy like 10 shares? I can't just blindly buy them

### Reply 15:
You would receive the amount of BTC equal to 10 shares of the machines hashing power, which in this case would be 400ghash.

### Reply 16:
going to check the QA 1stly..

### Reply 17:
In for 1, tx <truncated> sent you email with details, thx

### Reply 18:
How will you do payouts now that BTCT is closing?

### Reply 19:
We're currently busy making arrangements. Updates to follow soon.

### Reply 20:
any more shares

### Reply 21:
Yeah, we still got some

### Reply 22:
Please see PM

### Reply 23:
I posted here and emailed you yesterday, can you confirm receipt of my shares?edit: my fault, sent to wrong email address, all good now

","[
  {
    ""hardware_name"": ""COINTERRA 2 Th/s"",
    ""hardware_is_owned"": false
  }
]"
15375,"Date: 2014-10
Topic: How to access miner in case of hosted mining?
### Original post:
How the miners are accessed in case of hosted mining, as advertised by many hosted bitcoin miner providers?

### Reply 1:
Usually they are not accessible.They point to a pool they pick for you, possibly because they make money in other ways (merged-mining).Or, you purchased a share of a large machine which has to be subdivided and must point to a pool of the hosting companies choosing. They do the math there and pay you on your share.If you own the entire machine at the hosting company then maybe, they will let you point it to anything you want, this is hard to find I think...

### Reply 2:
Depends on the hoster. Many will offer you a web interface to control some aspects of your miner, while others will give you discrete IP address/port to use to access your miner via its own web interface, and some will additionally give you an IP address/port for ssh access. Often they will give you all of them. Check with your hosting company as to what they offer before you sign up.

","[
  {
    ""hardware_name"": ""large machine"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  }
]"
807,"Date: 2013-07
Topic: [GB] KNCminer Jupiter  #16 Sold [Added to 6 TH/s Jupiter Pool] 18/30 left
### Original post:
Because of dropping BTC/US exchange rates I am offering everyone in Jupiter #17 a refund if they request.-Or wait till exchange rate goes back to $100-Or offer 50 shares on Jupiter #17 at 2 BTC to pay for balance- Or refund everyone on Jupiter #17 and buy with Paypal with 30 shares at $240 eachthese are the investors <truncated>

### Reply 1:
Hi damn that's a shame. I guess I'll take the refund if everyone else wants to do that. Btc down to 68 USD

### Reply 2:
refund sent, will stay in touch

### Reply 3:
KNC has stated that they will try to include in first day delivery, but nothing guaranteed.

","[
  {
    ""hardware_name"": ""KNCminer Jupiter"",
    ""hardware_is_owned"": false
  }
]"
13653,"Date: 2020-06
Topic: Warning!! Don't flash June 2020 bitmain firmware
### Original post:
I received this message on telegram from a chinese resellerI don't know the initial source and I have not verified the matter personally but I trust grace who forwarded this message.So far this only mentions the + versions, but I would be careful with all other 17 series until things are in the clear.

### Reply 1:
yeah. grace has been very good seller.smart too.

","[
  {
    ""hardware_name"": ""June 2020 bitmain firmware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""17 series"",
    ""hardware_is_owned"": false
  }
]"
20819,"Date: 2015-12
Topic: SP20E Proper Fan Connector?
### Original post:
Hey guys... I just got my hands on another SP20E for a decent price... Problem is, the guy modded it with a custom fan, which doesn't seem to be hooked up properly, or something... Maybe that'll be a different thread, because that's pissing me off in and of itself, and if I can get that working, at least I'll have a fan to use <truncated> I guess it's the typical connector used for these units. The fan is a standard 4-pin, and it goes to this mini 4-pin on the SP20's board... Problem is, the guy inclided the stock fan, and not the adapter, so now I can't run the thing anyway. Ideally, I would like to get both fans running, but the simplest thing right now would be to get this adapter. I'll try to fix the other fan as well, but here's the adapter from the stock fan, to the board. What adapter would I need? <link>

### Reply 1:
Also, I'm going to put it in another post I guess, but the other fan is a delta SP09 or something like that. It's this heavy 230cfm fan, and the guy custom wired it to a PCIE peripheral connector. The red on the fan is going to the yellow on the wires, and the black is going to the black... But for some reason, it's not working... When I hit the PSU switch, the wire actually ""jumps"", (literally moves) then the PSU goes off. Fan does nothing... The red on the fan is wired to all 3 of the yellows and taped off, and the black on the fan is wired to all 3 of the black on the wires, and the other two wires (blue and brown) are just off separately, not attached to anything...

","[
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    ""hardware_name"": ""custom fan"",
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    ""hardware_name"": ""stock fan"",
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    ""hardware_name"": ""adapter"",
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    ""hardware_name"": ""delta SP09 fan"",
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  },
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    ""hardware_name"": ""PSU"",
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7161,"Date: 2014-02
Topic: What batches has CoinTerra shipped so far...
### Original post:
...and what is expected date for shipping of February batch?

",[]
13253,"Date: 2014-09
Topic: OFFICIAL CGMINER mining software thread for linux/win/osx/mips/arm/r-pi 4.6.0
### Original post:
New release: Version 4.6.0, 7th September 2014As the sun sets on the home mining scene, here's a new release mainly with the driver for the BFL mofarch that was completed months ago but sitting around waiting for someone to actually take delivery of them. I'd been holding off till now because they promised a new firmware and I was going to redesign the driver around it, but that never eventuated...Human readable changelog:- BFLSC28, aka BFL Monarch driver.- Avalon2 driver updates.- Minion driver updates.- Allow passwordless workers now.- Disconnect connections to unused stratum pools more reliably.Full changelog:- We should not be checking for pool_unworkable in cnx_needed as it is keepingstratum connections open on unused pools- Properly handle lack of input when adding pool via menu- Allow workers without passwords- minion - increase max chip number- Avalon2: add more comments on Avalon2 options- Avalon2: add polling delay option, long coinbase support, LED status on API,change overheat from 88 to 98- minion - add a ' before non-zero core error counts- minion - hidden optional per core nonce stats- bflsc28 - clock is hex- bflsc28 - allow setting clock and volt from the API ascset<rest of post truncated>

### Reply 1:
No 4.6.0 Windows executable?

### Reply 2:
My mistake, sorry. Uploaded.

### Reply 3:
So true. The peoples coin - taken from the people......

### Reply 4:
Thanks, works.

### Reply 5:
Regarding the S3.I don't have the build environment to create a full binary image, and the code will need a LOT of work to actually become part of mainline cgminer it seems, but for the time being here is a link to a bugfixed binary of cgminer 4.6.0 for the S3 based on the bitmain code. Copy the file into /usr/bin/ on the S3 overwriting the existing one:<link>

### Reply 6:
Thank You for the fix. Processor load is way down. It is really great to get this working even better. Hopefully both of mine can now handle 218 not one 218 and one 212.

### Reply 7:
Hi,I see these messages when cgminer works, but can't find any documentation regarding them. What do they mean?They didn't come one after another, I only collected the messages I don't understand. Here we go:I'd be grateful for any help.

### Reply 8:
I'm not sure where you're seeing these messages. There hasn't been any GPU code in mainline cgminer for over a year and I'm not supporting anything but the current version.

### Reply 9:
Thanks @ckolivas.This is the output of cgminer.I use it to mine on testnet. There are 4 radeon 79xx gpu cards, and according to cgminer stats it does ~2.5gh/s - I was hoping to mine something, especially that current testnet difficulty == 1.0, but it doesn't work, hence I posted this warning(?) messages.

### Reply 10:
Which version?

### Reply 11:
ckolivas, any idea why the new firmware & cgminer version on the s3 would stop access via the API? I don't have an s3 yet, mine will be here soon though, they have been shipped from china... but in the meantime users of my app are saying when they upgrade firmware and install newest version of cgminer app doesn't have access to api. they've said they still have api access enabled.when I wrote the app I used the API specs that were in github. it worked before the update.i'll be able to test when my s3 come but thought maybe someone knew off that top of their head

### Reply 12:
I suspect there will be people mining at home for fun pretty much forever. And home mining for profit has been pretty much impossible for years - at least not without a huge amount of luck - although many people let wishful thinking cloud their judgment.Thanks for the new release - I will test it out on a couple of Monarchs shortly :-)roy

### Reply 13:
Working fine for me.

### Reply 14:
ok. I might be end user error. I didn't think the API would change all of a sudden

### Reply 15:
Not immediately detecting my Monarchs.Am I right in thinking that all I should need is --enable-bflsc at build time (and nothing special at run time)?

### Reply 16:
Ah, it appears that production Monarchs (or at least these two) have iProduct set to ""BitFORCE SHA256"". A quick edit of usbutils.c and we're hashing (albeit with a warning at startup about an unknown firmware version).Note that this iProduct string seems to be the same as the old BFL FPGAs. I've no idea whether this matters - although I'm not compiling the old bitforce driver so it clearly doesn't matter to me.

### Reply 17:
S3 disables write access to the API and ignores the _aa setting.I'm not sure which versions do this setting or if it is all of them.I've had 3 different versions (my first S3 controller board went strange and Bitmain replaced it quickly for me) so I'm not sure.In /etc/init.d/cgminer mine <truncated> $POOL1 $POOL2 $POOL3 $_pb $_ow $_bec --api-listen --api-network <truncated> --bitmain-hwerror --queue 4096""Instead I change it <truncate<rest of thread truncated>
","[
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    ""hardware_name"": ""BFL Monarch"",
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  },
  {
    ""hardware_name"": ""Avalon2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Minion"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""radeon 79xx"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Monarchs"",
    ""hardware_is_owned"": true
  }
]"
20799,"Date: 2015-12
Topic: Avalon Nano 3 COM# Help
### Original post:
So i just recieved my Avalon Nano 3 in the mail, downloaded the driver and turned on bfgminer to use it but it didnt register it, so i checked my devices and printers and saw that their was no COM#, i have a sabrent 13 Port Powered Hub And Currently run 3 ASIC Block erupters on it, is their something im doing wrong, immediate help is appreciated, thanks.

### Reply 1:
please help answer ive been trying all day

### Reply 2:
sorry you purchased that gear. I never had any luck with those sticks and gave mine away.maybe you try to use the avalon alone see what happens

### Reply 3:
already tried, it just closes BFGMiner

","[
  {
    ""hardware_name"": ""Avalon Nano 3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sabrent 13 Port Powered Hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC Block erupters"",
    ""hardware_is_owned"": true
  }
]"
5666,"Date: 2013-07
Topic: NEW - another ASIC chip
### Original post:
We have money. So we don't need anymore.

### Reply 1:
Why are you doing an ASIC then?

### Reply 2:
Why not give us more details then. Process node, how far are you into this etc

### Reply 3:
What I know at the moment: 0,18u-0,13u (180nm-130nm) with less than $250k (ASIC development $150k, shattle first test (50 chips) - $40k, chip assembling and final testing $40k)Development could take 3-4 months, maybe 5.

### Reply 4:
You'll be way behind the game with that process and such lead time.

### Reply 5:
Probably I will be the only one with only accepting escrow payment. That's for sure.I will post the lead time when I will know more about.

### Reply 6:
Way behind using what metric? All ASICS currently being sold are expensive in terms of $s/hash, not J/hash. We cannot tell who is ""way behind"" until we see the price of finished product. But I am getting ahead of myself, since there is really nothing to be discussed in this thread yet, anf there won't be until the first unit is tested by an independent party.

### Reply 7:
This.

### Reply 8:
And you will offer better prices than current ASIC vendors right?(BFL doesn't count. Inaba is a lying tard) Considering that AM sold 10Ghash devices for ~1 mil USD in a matter of days you will surely get your R&D money back even with lower prices. Let us know when you will have a better estimate for your timeline. Will you be EU or US based?

### Reply 9:
Way behind the current quarter, but the game has 3 more to go. We just started the ASIC race and there is probably 5 years time for various enhancements that will determine the bestselling ASIC design.EDIT: NOT that I believe that this project is true or will be successful, otherwise why even reveal it on this forum in such a way.

### Reply 10:
stop revealing new projects that aren't ready to ship, it is getting worse than all those new scamcoin

### Reply 11:
Scam sites are the worst thing, and they have nothing in common with us.So stop putting us in the same ""box""!

### Reply 12:
It's good that you're starting a project with thinking about the project name. I was told that it's the most important part of every project so I'm glad to see that you try to cover it first. Then of course comes the website and it's good that it's 2nd on your list. This gives me confidence in your project. Keep us updated and let us know as soon as you have your logo designed!

### Reply 13:
Sarcasm is strong with this one.....

### Reply 14:
Project name: Abagnale

### Reply 15:
Can we just stop with these BS announcements? You have nothing to sell right now. When you do, start an auction or sale and people will buy from you. No promotion is necessary in this market. We will come to YOU. Or, just develop it and mine yourself. Every preorder or announcement is a scam until proven otherwise. You are no different.

### Reply 16:
You are too late to the ASIC game. There are at least three companies that have ASICs developed already, and you are a fool if you think those three companies aren't working on improved versions (well, maybe not BFL, lol). That's A LOT of competition and developing an ASIC takes a lot of money and a long time.These companies are selling their machines WAY over their cost because that is what the market will bear right now. ASICs in large quantities are cheap. Expect them to get cheap and competition to get tougher. And most importantly, difficulty will skyrocket.In the not too distant future (within a year), we will be able to buy ASIC machines with about 100 GH/sec power that run at about 100 watts and cost a few hundred dollars. The difficulty will be such that the ROI for such a machine will be 1-2 years, so mining will be mostly for fun and small profits, not the cash cow it is now.

### Reply 17:
I love chips. Bet you can't have just one.

### Reply 18:
Altera HardCopy?

### Reply 19:
I wonder why people didn't try this earlier. Their NRE is more like $750k though.

### Reply 20:
Mr. funnow,Go develop your chip. You will know when it's time if you're going to make money or not, or if you just end up helping the network.

### Reply 21:
Timing, speed and quality is important. We don't care if it is 28nm or 80nm or 110nm...

### Reply 22:
Altera claim the NRE can be as low as $165k for 130nm HardCopy Stratix devices, even they don't recommend it for new designs:<link>

### Reply 23:
You mean the whole package to design, testing including the NRC and other expenses to produce a working bitcoin asic chip? How long would it takes to produce them? 3 months? or shorter time frame?"" You get production devices in approximately 20 weeks "" about 5 months? But this is only a prototype working model of the chip and board itself.. how much would be the chip, pcb and labor to produced them? Chips size will be big and power consumption high ..though

### Reply 24:
I was just talking about the NRE.

### Reply 25:
Some news:- escrow only- only orders when items will<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""ASIC machines"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""10Ghash devices"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Altera HardCopy"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""130nm HardCopy Stratix devices"",
    ""hardware_is_owned"": false
  }
]"
20660,"Date: 2015-10
Topic: Any way to run a spondoolies type machine off of one 220v cord?
### Original post:
I have a welding plug in my garage that I would like to use for a machine (that isn't bought yet) but wondering if it's possible? My sp30 is runing off of two 15 amp circuits but I know they can run off of 220v and be more efficient.

### Reply 1:
You could get a 30 amp breaker, assuming you have the electricty compacity for it. Make sure to use proper electric cabling for it and nice plug. I would not go though the welding plug unless you are for sure the wire can handle the 220. So it kinda varies on anwser depending on setup. But then you would go from receptical to PDU which allows both SP30's to run on it.

### Reply 2:
It's a 50 amp plug, wired to run a welder.

### Reply 3:
buy a used pdu like this<link> an adapter for the plug. you should be good to go

### Reply 4:
my sp30s run from a single cable with a 220v splitter like this one:

","[
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    ""hardware_name"": ""sp30"",
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  {
    ""hardware_name"": ""30 amp breaker"",
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    ""hardware_name"": ""electric cabling"",
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  },
  {
    ""hardware_name"": ""220v splitter"",
    ""hardware_is_owned"": true
  }
]"
9473,"Date: 2015-11
Topic: The most efficient USB miner (scrypt/SHA)
### Original post:
I am wondering what the most efficient USB miner is?Thinking of plugging some into my work computer... heheheh

### Reply 1:
this one is but it only works with Sha type coins.<link> look here for a list of now and then stick miners <link>

### Reply 2:
toptek has pointed you at the best one around.as a suggestion use a y cable as it is easier on the pc's ports wait for link.<link> will allow you to clock higher and to not over heat the ports.with no fan you can do freq 200 with this cable.

### Reply 3:
Thank you, toptek!

### Reply 4:
Sha no doubt go with sidehacks compacs. You will enjoy it and you can OC them to where no other stick miner touches them.On scrypt it would be:What about this lketc miner here - <link> is full review. <link> I have not seen a ton of it on the forum. It is mainly Chinese market on that scrypt stick.

### Reply 5:
100% agree with sidehacks compacs. Just bought the usb miner, awesome. Allows for solid over clocking IF you have the cooling capability and if you don't at 150 Mhz it runs pretty cool.

### Reply 6:
yeah here are 20 sticks at 250

### Reply 7:
That is a cool setup!!

### Reply 8:
I might have some fun news regarding a scrypt based USB miner soon

### Reply 9:
are the usb miners still profitable or are they more just for fun these days?

### Reply 10:
Ow nice for the link i saw the how to do overclicking the usb asic miner.. thank for this sir.. This extra another income for me...

### Reply 11:
The USB miners will be mining in the positive, however the odds are low you would see an ROI.IMO they are the PERFECT! PERFECT, miner for a hobby miner / lottery miner.Get the S7 if you want ROI, IMO.

### Reply 12:
For most people, the S7 has about the same odds of turning positive as a stickminer does.

### Reply 13:
You will need to have decent power, most use a powered hub to get this. Also use a Y-USB connetor ( <link> ) Allows twice the power as 1 usb cord would.Use the compac-cgminer and it's pretty simple from there. I would suggest a little fan if you are doing this to push air.

### Reply 14:
I got tips from the others you may try avalon 4.1 with low power cost... Usb for now is not profitable ur you wait for a long time...

### Reply 15:
I am mining with an antminer U2I am not sure if 80 years will be enough to ROI...and I do not count electricity cost.And i'm be serious saying this.

### Reply 16:
u2 = 2ghwith 0 power cost it should earn about 1.50 usd by the end of 2016sidehack stick = 13.5 ghwith no power cost it should earn about 9 usd by the end of 2016

### Reply 17:
I'm closer at 1.5ghshould I overclock, without fan?

### Reply 18:
A u2 can do freq 225 but will need a fanSidehacks sticks can do freq 400 but will need a fanThe u2 is hotter the sidehacks stick so if you oc use a fan.

### Reply 19:
About 10 stock up to about 50 if you're really pushing it. 20-25GH should be doable with a 1A port.

### Reply 20:
If by ""sizeable amount"" you mean ""more than zero"" nope, I have not gotten a sizeable amount of anything from anyone since the BM1384 purchase end of June.40GH would probably take more than 2A of 5V. Probably take 2.5V at that point, since the chip would be drawing 10.5W by itself plus conversion losses and controls. I'd estimate 12W into the stick at 40GH, which my base Compac design will handle.I could buy an S7 and part it out, but the chips would then cost a little over three times what I paid for my BM1384 stock. End cost for the stick would be more like $30-35 than $25 and it'd take about seven S7 to prototype and run out a full 1000-stick batch. Technically possible but probably stupid.

### Reply 21:
Keep up the work side!! Got a few people at work that are going to buy a few of the USB miners with me . Have my first one running 2 days now .It seems I could clock these up to like 20GH/s if I cooled it well.

### Reply 22:
Sounds like a expensive R/D if you have to use the unit itself. I keep hoping someone will release a chip and make competition and they will sell you a batch.I think it might be a while but I think Innosilicon is a likely one to sell chips, unless BW and LKETC take all they can produce. Would be nice of BM to sell them to you. You should push you can help them sell R1's if they sell chips to you and make your product supported on it. Can't imagine anyone not wanting one if for 25 or a tad more you could push 25 to 40 GH of extra hash from R1.

### Reply 23:
The Compac has been tested to work (enumerating as a U3) on an R1, if I'm remembering right. A Compac2 with 1385 would require specific software so not <truncated> I didn't think about trying that angle with Bitmain though.I am more optimistic about Innosilicon selling chips, but since they thus far have no interest in small quantities or samples it seems getting anything even for testing is months away which puts production more months away.Also, all this should probably be discussed in a dev th<rest of thread truncated>
","[
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    ""hardware_name"": ""Sha type coins USB miner"",
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  },
  {
    ""hardware_name"": ""sidehacks compacs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""lketc miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""antminer U2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sidehack stick"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""avalon 4.1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1384"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon chips"",
    ""hardware_is_owned"": false
  }
]"
7629,"Date: 2014-05
Topic: 2GH NinjaStick USB Miner powered by Bitfury
### Original post:
MineNinja is pleased to announce our newest product, the NinjaStick USB Bitcoin mining stick powered by the Bitfury 5GH ASIC. It's done right with adjustable voltage and a temp sensor - actual performance is still TBD ~ but we anticipate at least 2GH. These will be available only on a wholesale basis, MOQ 100 sticks - orders will open once the prototype is hashing and evidence posted to youtube. Estimated Pricing:September production - estimated price 2BTC per stickOctober production (using October deliver Bitfury chips) - estimated 1BTC per stickFinal pricing is still TBD, and depends on factors like volume. The more interest, the cheaper we can get them made. I'm also looking for the ""right"" partner/investor to help with the project. It's not just about money, rather what you can bring to the table to help facilitate growth.

### Reply 1:
reserved

### Reply 2:
Reserved

### Reply 3:
MOAR POWER!!!!!!!!!

### Reply 4:
Guaranteed group buys will be interested. I'd be up for organizing at least one.

### Reply 5:
EU or US?If EU PM me when you do so please! thx

### Reply 6:
US. It'll have to be after more details are announced. It'll probably be for the October date and depends on the price and difficulty. Right now Avalon K16s are 4.5 GH/s stock @ around $260 (hopefully delivered by September). 2BTC = around $230 for 2 GH/s so I'm not sure it'd be worth it for the September sticks.

### Reply 7:
watching

### Reply 8:
$110 a GH in September?Are you paying attention?

### Reply 9:
possible group/bulk buy to ebay single sales. depending on what the level of interest is at the time. Hence, watching =)

### Reply 10:
ReservedAnd hello from Indonesian bitcoin miner!

### Reply 11:
Potentially interested in adding the product to the BTC Guild ASIC store, which would provide shipping worldwide. Mostly depends on volume, wholesale pricing, and what competing products come out by the time these would be available in bulk.

### Reply 12:
So this will be another pre-paid, pre-order gig yes?cheers,kev

### Reply 13:
0.5BTC/Gh/s in October? Might be a fun toy ~1btc, but anyone paying 100BTC would be taking a huge risk in their ability to resell them for a profit, and they certainly wouldn't be very worthwhile to use in a big mining op.

### Reply 14:
If it hashes and looks good, I am in for one as a collectible. I agree that the price will turn off most profit oriented people. Perhaps you can credit first buyers with coupons or stocks.

### Reply 15:
Again, a company making a mistake on an unsellable product.The USB stick market is going to need to be profitable to be sellable. Right now these are put in a dollar and get back 25 cents.

### Reply 16:
Price needs to be .15 BTC.

### Reply 17:
It costs more than 0.15 BTC to buy just the chip not including postage, fab etc.

### Reply 18:
watching

### Reply 19:
ninjaaaa watching

### Reply 20:
Then I'd say the chip is way too expensive, it has had any markup priced out of it already, just my two satoshis.

### Reply 21:
Interested.

### Reply 22:
Yes, that is a big problem. ;-)

### Reply 23:
Cool project, but too pricey.I'd pay 0.75 for one to dig the mud out my walking boots? Waddya say?

### Reply 24:
At 2BTC that's $113 per GH/s which is a total joke.Even 1BTC you would be lucky to get any ROI by the time it ships. It needs to sell for less than 1BTC if it can't then don't start the project.

### Reply 25:
Interested. Watch mode.

### Reply 26:
And this is the first signs of what will happen to NON-USB ASIC's in October or November 2013.Companies will figure out that their initial designs can't easily overcome pricing restrictions. So they will have to redesign Gen2.1 to be more massively parallel to keep outrunning the difficulty by any meaningful timeframe.(You heard it here first! Expect many companies to pre-plan, adapt to changing market conditions, or utterly fail and take your money/BTC with them. Spend wisely.)

### Reply 27:
The block erupters will be at .12 BTC is the next few weeks. This new device should be around .45 @ least 2gh/s to be worthwhile.

### Reply 28:
We're doing everything we can to get the price down as low as possible, but please have reasonable expectations as we can't sell them for less than the chips cost, plus theres a bunch of other parts, board, heatsink, and NRE costs that we have to recover. These small units aren't going to have the world's best ROI, you can only get that promise when you buy $5k worth of vaporware. Real things in hand cost more than powerpoint slides and renderings. Anyhow we are trying to keep a sub $100 price point to give entry level miners some meaningful hashrate.

### Reply 29:
Hmm, I don't like your comment very much. ASICMINER USB sticks, a real product from a real competitor, is existing competition to your vaporware. Furthermore, and I can't believe this is not obvious, your production costs do not matter to the buyer and<rest of thread truncated>
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    ""hardware_name"": ""Bitfury 5GH ASIC"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Avalon K16s"",
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    ""hardware_name"": ""ASICMINER USB sticks"",
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6377,"Date: 2013-09
Topic: Avalon fucks us over again
### Original post:
Avalon fucks us over again!!

### Reply 1:
With a name like Y I <truncated> thunk it Translated= FUCK YOU Y I FU

### Reply 2:
This is already a crime according to Chinese law. Anyone related please report to Chinese police.

### Reply 3:
<truncated> - Marto74 <truncated> - ASICME.com <truncated> - Jimmy2011 <truncated> do not know whether Marto74 is Chinese or not. Marto74 got refund. But ASICME.com and Jimmy2011 got chips.Is it best present for Chinese Mid-Autumn Festival <truncated>

### Reply 4:
He'll hand out some ASIC miners or BTC to Chinese law enforcement & politicans & he be back in bidness boi!!!!!!!!!!!! Bribery & payoffs are SOP in most <truncated> god that don't work here in the good ole <truncated> wait..............

### Reply 5:
what a shock...

### Reply 6:
Why am I not surprised in the least?

### Reply 7:
Will this reach BFL proportions? Lets see how long until it reaches the 100th page!

### Reply 8:
Hey buddy Sorry to hear that, there was someone who was in a similar situation but seems lile Yifu refunded them after posting this <link> you manage to get your coins back

### Reply 9:
Avalon fucks us over again!! +2

### Reply 10:
As I understand it, in China much shipping is done by proxy as it were. How many times have you heard ""we've handed the shipment off and are waiting for tracking numbers from the shipper""?I think it's entirely possible that the handoff had already occurred when the refund was requested.I'm not saying that BitSyncom hasn't failed in multiple major areas, but I'm not sure if you can justifiably lay blame on them in this particular case.

### Reply 11:
Why? They are a US company.

### Reply 12:
1) We ordered the chips from Avalon, not from the proxy.2) The status for refund is OK, so we requested for refund according to WTF Avalon promised that any chip ordered any time can get refund. Avalon didn't say that they have shipped the chips and told us we can't get refund after Avalon hand over the chips to the proxy. It's possible that the handoff had already occurred, but their order system didn't say it, so it's not our fault.3) So many group buyers are blaming them.

### Reply 13:
First off, I am sorry to hear this. I wonder if the shipper had the chips before the 17th and they were the delayed in getting them out but in Avalon's mind it was shipped after the refund request? I would try to ascertain when the chips were given to the shipper.

### Reply 14:
guys, contain this, you're fucking with his chi

### Reply 15:
Yeah and I'm spending $100/month on power for a Batch3 that may reach 80% ROI.Thats f-in with my CHI!

### Reply 16:
Hi YifuI am still not recieved refund for Avalon batch 2 units i paid for 5 units - 75 btc eachto Wallet bit 03.02.2013Why there is delay, why you don't refunding my money ?i can confirm all my paymentsMy last ticket number in you system 1477I also made a refund request And i contacted with Xiangfu - about refundBut there is no any response from you , why ?are you still here on bitcoin arena ?Best regardsAlexey

### Reply 17:
<truncated> replied me today and he promised to issue refund to us. I will send the chips to Avalon as they give me the address and contact information.

### Reply 18:
John has sent refund request on 17th Sep. for our 2nd group buy (ordered on 2nd June), however, I got both the 1st (ordered on 30th May) and 2nd GB chips this morning. From sf-express.com, we can confirm that the shipping was started at 17:22, 18th Sep., which suggests that Avalon sent chips after we requested refund in their system. Avalon fucks us over again!Update ( <truncated> replied me today and he promised to issue refund to us. I will send the chips to Avalon as they give me the address and contact information.

### Reply 19:
This is not bad.

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    ""hardware_name"": ""Batch3"",
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23260,"Date: 2020-04
Topic: New Antminer T17 issues
### Original post:
The miner is just over a month old and is showing issues with Chain[0].The kernel log shows the first <truncated> read temp sensor failed: chain = 0, sensor = 0, chip = 64, reg = 0Then it shuts down that chip, and gets stuck in retrying to check temp.It worked normally a few weeks ago, and even worked with 2/3 chips yesterday with 2/3 hash rate.I have followed the five steps in the first post on this website but still nothing.Could anyone help ?Code:2020-01-15 11:31:28 <truncated> chain[0] heart beat fail 5 times.2020-01-15 11:31:30 <truncated> chain[0], voltage is: 0.000000 2020-01-15 11:31:32 <truncated> chain[1], voltage is: 17.781328 2020-01-15 11:31:33 <truncated> read temp sensor failed: chain = 0, sensor = 2, chip = 168, reg = 12020-01-15 11:31:35 <truncated> chain[2], voltage is: 18.001758 2020-01-15 11:31:35 <truncated> aveage voltage is: 11.927695 2020-01-15 11:31:35 <truncated> target_vol = 17.90, actural_vol = 11.93, more than 1.0v diff.2020-01-15 11:31:36 <truncated> retry time: 62020-01-15 11:31:40 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 02020-01-15 11:31:48 <truncated> chain[0], voltage is: 0.000000 2020-01-15 11:31:50 <truncated<rest of post truncated>

### Reply 1:
By disconnecting 1 of 3 boards you may have shifted the board counter overHard to tell exactly what you did.If you could disconnect two boards and boot and do full code of logthen do two boards again show full logthen do two boards again show full log.each time you do this make sureboard 0 on first try is connectedboard 1 on second try is connectedboard 2 on third they is connected.if you always get 1 board to work and if it is a different board each time you may not have a board issue.then try with 2 boards connected make board 0 disconnectedtry 2 boards connected make board 1 disconnecttry 2 boards connected make board 2 disconnectif you always get 2 boards to work you may not have a board issuelastly try all three and if board zero does not work I suspect the psu which means order a psu<link> like it is sold out may need to wait til feb to get one.<link> is in use they got me a psu for my m20s from whatsminer maybe they have a t17 psubut do the trouble shooting before you buy a psu.There is a cost analysis since you are getting 2 boards to work right now spending 200 for a psu many not pay off.If you are off 14 th that is about 2 dollars a day with free power if your power is a <rest of post truncated>

### Reply 2:
This is a good sign that all 3 boards are still good, here are the three possible reasons.1- Voltage:if you are not feeding the miner with 200-240v it could act weird and not be able to power on 3 hashboards.2-PSU is dying:Due to unregulated voltage or simply bad luck, the PSU can't feed enough power for all boards3-The data-cableMake sure you test all three of them by swapping them.also can you tell us what is the exact voltage you plugging the miner to? please notice these new gears take voltage very seriously, anything above 240v or below 200 vots is simply a free ride to RMA.

### Reply 3:
I'm starting to think the same.. i guess the last attempt is to disassemble the PSU and look for any obvious damage.Thank you both!

### Reply 4:
If you confirmed that all 3 hash boards work just fine, i think it would be best to buy a new PSU, for two main reasons. First one is this PSU is not good and it could damage the hash boards eventually, so there is a good amount of risk in keeping it. The second reason is economically based, T17 40th makes about 6.3$ a day (before electricity bill) so every board makes a good 60$ a month, T17 PSU costs 134$, say 30$ for shipping. you are looking at about 160$. If your power cost is 5 cents then PSU ROI will be about 5 months.if you decide to keep on mining with only 2 boards, at least sell the other one that's sitting there doing nothing. Just 2 two sats.

### Reply 5:
Have you tried the other solution above? If you confirmed that the PSU is good then I would like to suggest moving the miner on the other outlets or plug the miner directly to the wall outlet then test it again. Because sometimes extensions can't handle high wattage and can't give enough power to the miner.

### Reply 6:
Did you manage to find any fix to this issue? One of my T17+ machines is acting the same. I get the same info in log, 1-2 hours of mining one of boards stops hashing. After a reboot it works fine for few hours then issue repeats.

### Reply 7:
Of all the bitmain gear I purchased last year my t17+ has had the most issues.I am glad you found that 17+ firmware I will give it a spin on my t17+ since it has been running with 2 boards for more then 3 months.I will post back if it gives me the third board back""Antminer <truncated> VersionSocket connect failed: Connection refusedKernel VersionLinux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018File System VersionWed Apr 8 11:27:07 CST 2020""Just load<rest of thread truncated>
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10488,"Date: 2017-09
Topic: S7 beeping and RED LIGHT AND INTERNET ISSUE? Please help? newbie
### Original post:
I AM SORRY IN ADVANCE IF THIS HAS ALREADY BEEN POSTED AND ANSWERED- I TRIED TO SEARCH BUT GOT LOST IN OTHER THREADS OF GREAT DISCUSSIONS...I have an S7 that overheated and then when i powered it back up i couldnt get the miner onto the network.. seems like the ethernet port may have burnt out there is a beeping noise and instead of a green blinking light its now a red blinking light...any advice would be helpful, im crying at night seeing the price rise of BTC and this miner just idling around...Can this be repaired... sent back is it worth it? can i salvage the chips? i have S5s but they are slower than molasses and loud and hot. it is difficult to leverage them and power them at same time.Have a S7- working 4-THS A R4 WHICH SEEMS TO BE THE BEAST OF THEM ALLLL QUIET EFFICIENT NOT USING A LOT OF PSU... SHOULD IT USE MORE PSU-- SHOULD I RAM UP THE FREQUENCY ON THAT ONE??R4-~5TH/ss5 500gig hash-- am i supposed to update the firmware on these at all or anything-- or just straight plug and play??Thanks in advance!!Im just Tryn 2 Eat 2!!1Love

### Reply 1:
With Bitmain beeping most often means no network connection but might be overtemp warning. The fans working? If not it will very rapidly overheat and stop the boot process causing the same thing.Unlike the S5 and earlier models the chips cannot be salvaged -- the heatsinks are held on with thermal epoxy and are extremely difficult to remove without damaging the chip.

### Reply 2:
The problem is depend on your home internet that have only dynamic ip address but you have setting up Antminer S7 by (x) static ip. When S7 is using static ip address it has to use your Internet provider DNS + Gateway that not allow you to use static ip address. If you turn off (untick) static ip address in S7 setting is will be ok again.Better if you can apply to get a static ip from your home ISP. I am paying $7/m extra to get static ip address for my Bitmain Antminer s7.

### Reply 3:
This is 100% false. Removing the heatsinks carefully is not all that hard. I can pull an entire board of S7 heatsinks off in 20 minutes without damaging the chips. The secret is to heat the smaller bottom heatsink and pull it off first. If you heat the larger heatsink it will pull the heat through to the bottom heatsink and melt the solder holding the chip in place, causing you to pull the chip off along with the heatsink in most cases. Also make sure you are not pulling straight up on the heatsink, twist a little when pulling so you are almost rocking the heatsink back and forth and peel it off slowly.

### Reply 4:
Whatever you do, do NOT follow these instructions. This guy is giving his machine an EXTERNAL IP with his setup leaving it completely vulnerable and open to the public internet to be hacked. The beeping is due to it not sensing internet. It can be a number of things. IP conflict, DNS issues, bad network cable, etc. I would verify all settings as well as swapping with a known good cable. Also you might want to factory reset the controller in cause something got borked in the configs. You can do this by using a toothpick to push in the reset button to the right of the ethernet port. Hold it down until you see both red and green lights blink at the same time and it beeps. This will put it back to DHCP so you can then find its IP, browse to it, and put all of your settings back in.

### Reply 5:
Gotta keep in mind the general audience here... Given the posts we've seen folks make most have minimal to zero skill sets for this.Even then, good luck reusing the s7-s9 chips. Even Sidehack refuses to deal with them because of their insanely fine lead pitch.

### Reply 6:
Fair enough. I did learn how to repair the boards and have managed to reuse s7 chips on other boards successfully. The biggest issue is not knowing if the chip you are pulling off of a board is fully functional or not but it is possible with basic hand tools.

### Reply 7:
[/quote]Whatever you do, do NOT follow these instructions. This guy is giving his machine an EXTERNAL IP with his setup leaving it completely vulnerable and open to the public internet to be hacked. The beeping is due to it not sensing internet. It can be a number of things. IP conflict, DNS issues, bad network cable, etc. I would verify all settings as well as swapping with a known good cable. Also you might want to factory reset the controller in cause something got borked in the configs. You can do this by using a toothpick to push in the reset button to the right of the ethernet port. Hold it down until you see both red and green lights blink at the same time and it beeps. This will put it back to DHCP so you can then find its IP, browse to it, and put all of your settings back in.[/quote]Do I say somewhere that my S7 has an external ip?! When you (x) static ip address on s7 setting (e.g. S7 has x- for a static ip 192.168.0.27, from e.g. Adv. ip Scanner).<rest of thread truncated>
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    ""hardware_name"": ""R4"",
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    ""hardware_name"": ""Bitmain Antminer s7"",
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    ""hardware_name"": ""home internet"",
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    ""hardware_name"": ""network cable"",
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18452,"Date: 2014-01
Topic: 2 cards different temps
### Original post:
Hi Folks,I am running 2X AMD Radeon R270x with cgminer.One runs at 72 degrees, the other at 83 degrees, always 10 moreWhy is the second card 10 degrees higher? I have to run the fan full throttle to cool it which makes it noisy.Thanks for looking.

### Reply 1:
its pretty normal. the display is on the 2nd card so its doing more work i assume you have them in crossfire so the 2nd card does the display work. run the pc with no side on it should help with cooling

### Reply 2:
It's not because the display card does more work. The display card would actually run cooler then since mining (scrypt anyways) pretty much maxes out the card while basic renders for display are minimal work and actually cut the 100% throttle of mining.The #1 card (the one in the top slot) is sucking in hot air from the back of the 2nd card. If you swap the card positions you'll notice the cards will swap temp gradients.Only way to fix that is put some good distance with risers.

### Reply 3:
Thanks both for the feedback. How do I remove the crossfire, just unplug the ribbon cable?

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13851,"Date: 2011-02
Topic: Mini PCI-E and PCI Express x1
### Original post:
Will either of these slots work with a standard video card for Bitcoin mining?I ask because I'm playing with the idea of getting an energy-efficient Atom board like this one:<link>

### Reply 1:
I've thought about this as well, although I read somewhere that something like 30% of the power is drawn over the PCIexpress port for the gpus. Not sure if these boards would handle that with any number of 5870s or 5970s. Definitely would be interested in what others think, or some real world results.

### Reply 2:
have you read this blog?<link> uses x16 cards in x1 slots with the aid of an extension cable, although he says you can cut away the edges of the plug and sit the card in there

### Reply 3:
Heh, the knife business is going to be hard work. At least this makes my Bitcoin miner very cheap. Thank you.

### Reply 4:
There's also this: <link>

### Reply 5:
There would be no problems as long as you don't try to run a full high res display on it. (Even then maybe you wouldn't have problems)Bitcoin miners transfer only like a few mb/s and you can easily run any gfx card on a 1x port.

### Reply 6:
I was worried the card wouldn't clear the power connector on this board what do you guys think? I guess you could get an extender or cable or something.

### Reply 7:
Most recently I used a dremel instead of a knife. Much easier.(Cut it with the cutting disk perpendicular to the length of the PCIe slot, it takes 10sec.)

### Reply 8:
I have a Zotac NM10 board with a full-length PCIe slot that is only x1 speed. It works fine for mining and there are no power problems, since higher-power cards (currently a HD5770) use separate power cables anyway. A HD5570 that draws about 40 W (no separate power) has also worked fine.I have tried to use another GPU with an extender, since the mobo has another x1 slot, but it is normally under the heatsink of the first GPU. This did not work as expected, I could never get the total hash rate above that of a single card. I think this is due to other limitations in the mobo/CPU, since individually the GPUs work fine in their x1 slots, even with the extender.An extender/riser may be a problem when the GPU is powered via the PCIe slot, but it should be OK for separately powered cards.The Zotac is also my main HTPC, and when watching videos I simply use a higher -f setting for smoother playback. This slows down hashing quite severely, and I think a x16 slot does a lot better in these situations. But for mining only, the slowdown of a x1 slot is really only marginal.

### Reply 9:
so can i run 4x 5970 , if my mobo only has 1 x16, & 3 x1(small one), if i have 1000W + 1000W or 1500W power supply with enough power cables connected to graphics card & using x1 risers?

### Reply 10:
If the motherboard can handle the load of all of the cards, which depends on factors I am not aware of.

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221,"Date: 2013-06
Topic: [Group Buy] Block Erupter USB from Denmark/Europe/worldwide (ends 01/07/2013)
### Original post:
This is a part of a Group buy, that will ship and end at 07/01/2013 no matter what.(right now i am wating to be verified by miningbuddy, since i dont have any +rep here yet)I have closed my frist group buy since i had some trubbel manegeing who was in the deal and who was out, since there was some people who wanted the units to ship here and now. so this system is much to easier to manage This group buy will not have a minimum or maxumum of order, but it will close at the first of July, and all the orders will be shiped within a day after the money is in place.if you want to take place in this Group Buy, you can do it in two ways.1. Make a order on bitmit as normal. (I am using escrow, but when the day comes to make the order, you have to release the money from there before i can ship the units, since i need the bitcoins to make the order)<link> Send me a PM here on bitcointalk with the address you want the units send to and how many units you want. like so""Units 3Full nameAddress : xxxxxxxxxCity : xxxxxxxZipcode : xxxxxxxxxContry : xxxxxxxxx""Then i will make a new address in my wallet with you name on it,and When the day comes to make the order i will ask you to send the money to <rest of post truncated>

### Reply 1:
I have closed my old Group buy since there was some missunderstandings, so i have rewritten my original post, so it will be easier to understand and manege . i will give you guys a update as soon as i get verified by miningbuddy, sinde there is some members who dont have that mmuch trust to a newcomer like me. if you had a orders in the ""old"" Group buy i made please make them again since this Group buy all new, and better. I am really sorry for the trouble for my first orders

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6970,"Date: 2014-01
Topic: Question
### Original post:
Is anyone manufacturing the newer controller boards and modules for the current Avalon Gen1 machines (batches 1, 2 and 3) with support and the 55nm chips? I would love be able to update my B1 and B2 to a 55nm module and controller card instead of having to buy a whole new system.

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    ""hardware_name"": ""Avalon Gen1 machines"",
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  },
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    ""hardware_name"": ""55nm chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""B1"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""B2"",
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]"
16803,"Date: 2011-07
Topic: Am I doing something wrong? HD 6950 Win7
### Original post:
So I bought a new Asus EAH6950 DCII/2DI4S/1GD5 for a dedicated mining rig. I know it isnt the biggest or the best card, but it is what I was willing to put into a dedicated rig for the moment. Anyways...From reading the forums and the hardware comparison chart, people are getting high 300's or low to mid 400 MH/s rates on this card. I am getting a consistent 340 MH/s after I have overclocked it to 900mhz. It is also running pretty hot even with the fans set at 95%. The card is running between 87c and 92c. I am running guiminer with poclbm and flags -v -w128 -f1 (f1 because it is dedicated... ie not used for anything else). Anyone have any suggestions? I have seen suggestions to boost the voltage 20% but I have two questions about this; I am not 100% sure where to do this, in MSI afterburner the voltage is blank and the ASUS smartdoctor it has a VCORE setting but I don't want to touch that until I know what it is. Also, won't increasing the voltage make my heat issues worse?Any help is greatly appreciated!

### Reply 1:
Yes, some 6950s in the hardware comparison chart are delivering some really high numbers. That's because they are hacked to ""become"" 6970s. This may be possible on your card as well. You can read more about it here: <link> think in some cases the locked shaders may not be functional, and unlocking them can give you a GPU that doesn't work right. I've never tried this though, so I don't really know what I'm talking about. Just if you decide to try it, make sure you read the ""what if something goes wrong"" section. Anyway, I'd be interested in hearing if you get any higher performance with my miner. It's optimized for 6900 GPUs. It's at <link> if you want to try it.

### Reply 2:
What is your current total hashrate at that pool? I'll try it out either way when I get home, but I'd like to know the total rate so I can add it to my backups or even main pool.

### Reply 3:
I get 300 mhash with my 6950. But i have to check out, if my 2nd has more mhash ( just installed it ).

### Reply 4:
It's a bit of a chicken-and-egg problem starting a new pool. Everyone wants to mine in the big pools, so how do you become big? But to get things started I'm giving out 150 bitcoins in the form of a 5% bonus on all work done up to block 60.Next two things coming are pool rate display and miner optimized for radeon 4000+5000 series.Anyway, if any of you guys modify a 6950 I'd be interested in hearing how it goes. There's probably a chance to render the card useless, so I wouldn't advise anyone to do it, but it does sound interesting.

### Reply 5:
You need better ventilation in the case. Those temps are just BAD.

### Reply 6:
If you up the voltage, your card will be fried. If the card is 92C at core, then the VRMS are frying which is not good.So long to your card pretty soon unless you return it to stock and downclock the memory.

### Reply 7:
Ok fixed the case issue. We are now running at around 72c

### Reply 8:
we really need a wiki page with acceptable temps for all the cards, so people understand what they should be aiming for imho.

### Reply 9:
I agree. Thanks to all that have helped in this thread, but I honestly looked everywhere else and couldn't find adequate information on a 6950 anywhere else.

### Reply 10:
i can help you with the ""power increase"".open catalyst control centergoto the overdrive sectiongoto the power control settings sliderslide it over to at least 5%if you raise clock speeds without increasing the ""ceiling"" of the card, it'll actually throttle down even though you've told it to raise the clocks.some people say slide it over to 20% to turn off the power play completely but i find 5% will hold the small overclocks i set.good luck'monkey

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14991,"Date: 2014-03
Topic: PSA: p2pool needs YOUR help!
### Original post:
I want to help! I have been a big fan of P2Pool because it is virtually risk-free. Sometimes its good to have no pool operator and sometimes not. Most pools now are cloning each other and tons of scams are happening daily in the altcoin community because creating new pools are easy (COPY and PASTE). The scams that happen is that one day- the pool supports an altcoin, people go there to mine, and bam- NINJA VANISH, that pool is gone. Lately, I converted my hashing power to a BTC Pool (NON P2Pool) due to my new gridseed scrypt/asics miners. I was dedicated to mining on Jude Austin's P2Pool.org software- however, there isn't valuable information for miners there vs a pool with more details about ME, the miner. If P2P can provide more benefits for the user, then it would generate more buzz back into P2Pool.I sent you a pm because I really want to help out in multiple ways. I look forward to a response.

### Reply 1:
P2pool needs to start helping itself before it can expect help from miners. There are issues with the software that have remained unsolved for many, many months due to a complete lack of development, not to mention a lack of support in the p2pool thread. Unless there is some development soon, p2pool will remain at the bottom of the pool ladder, before dying completely. This is what happens to all software that is not constantly developed & improved.Bitcoin is moving mainstream, but p2pool is stuck in the ""nerd"" culture: it's far too complicated for the average new user to setup, tweak & get running correctly. New users want to be able to install it & forget it - it should be capable of installing all the necessary dependencies itself as well as discovering the optimal settings needed for the machine it is being installed on - a simple wizard setup or similar. The average noob does not use command line - they want a ""pretty"" GUI from where they can adjust all software settings, choose what coins to mine, etc, etc.I believe in p2pool, I use it - but it's been abandonware for quite a while now

### Reply 2:
What issues? It works fine for me and at least several other people who are regulars on the p2pool thread. I can't guarantee it works 100% of the time for everybody all the time but I have had my own node running continuously on my small farm for several months with mostly no issues. It does have some resource leaks I think, but I resolved that by automating a once-per-week restart.Your comments about an installer are well taken.

### Reply 3:
If you have to restart the software every week in order to resolve issues then you are not running it continuously are you? You have highlighted my point perfectly

### Reply 4:
i don't restart it, a cron job does. You do make some good points about user-friendlyness. Something like MinePeon for p2pool would be great. (The hardware is inadequate for p2pool plus a full bitcoin node though.)But frankly what p2pool needs more than anything else right now is hash rate. I am willing to put up with some quirks (like a cron job restarting it weekly) to avoid any possibility of pools cheating me, pool wallets getting hacked, etc. and at the same time helping bitcoin to be more decentralized. I would think that some other miners would as well, which is why I'm offering to help them with the quirks.

### Reply 5:
P2pool will get the hashing power when the software operates properly & is user friendly. For this to happen it needs development, as I said above.Weather you restart your machine or cron does it is irrelevant - the fact is that it has to be restarted in order for it to semi function - who wants software like this?

### Reply 6:
I do. No risk of pool cheating or hacks, bitcoin stays decentralized. The benefits easily outweigh a few quirks. The bottom line is that itall works great once set up properly. Even during the brief (weekly) restart my miners just fail over to an alternate pool, so no hash rate lost.

### Reply 7:
Well, if you're happy with faulty underdeveloped clunky command line software that you have to restart every week - that's fine Unfortunately 99% of noob mainstream potential miners wont be happy - which is why they don't use it. This is the reason every other pool has grown with the network hash rate while p2pool is still floundering at the bottom. Sad but true.

### Reply 8:
It doesn't really explain it since public nodes such as p2pool.com don't involve any command line at all. Running your own p2pool nodes as a noob miner is largely impractical and growing increasingly impractical all the time due to the need to run a full bitcoin node. What I don't understand is why the larger scale industrial and semi-industrial mining farms with at least 5-10 TH are not using it, and I'm volunteering to help them do so.I'm going to lock this thread and repost at some point because I'm a bit annoyed at your thread crashing. This was not inteded as a general discussion of the advantages <rest of thread truncated>
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8850,"Date: 2015-02
Topic: 10 T/H's MinersLab?
### Original post:
Has anyone got any reviews on the 10T/H unit?

### Reply 1:
The only way I would buy one of those would be if I could go see it working before I handed over my bitcoins.

### Reply 2:
Never heard of them before. 0.455$ per GH/s is pricey but if the stated spec of 2100 watts is legitimate, it is actually a solid offering. Still, unless I see someone vouch for this company or review the unit, I wouldn't give them a single satoshi.

### Reply 3:
Its likely not real, see the drama in the other thread. It appears they purchased a legendary account to shill with.

### Reply 4:
Is there a more specific reference than ""the other thread""? A keyword, Id, or title perhaps?

### Reply 5:
If im being honest, was pretty excited seeing 10TH for 2000W! So i had a call to them.... then another one, then other one.... then another one......Either they are constantly on the phone or its just a big scam..Any recommend some decent high hashing hardware... I was hoping to get 60-70THCheers

### Reply 6:
Here ya go <link> one I can find ATM,search has been disabled here Guess it takes up too much HDD space

### Reply 7:
Oops yes that's it, though I had pasted the link. Search is disabled until the search index is rebuilt.

### Reply 8:
<link>

### Reply 9:
helloinform you that the minerslab is a fraud.do not buy anything, will be deceived, cheated, stolenown experience

### Reply 10:
One thread for this scam hardware is enough. Let's keep all the debunking in one place please as a service to the community:<link>

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9710,"Date: 2016-02
Topic: Large review of Finksy/J4bbrwock server psus compared to ATX psu- photos up
### Original post:
So I pulled the meanwell and went back to 2x 1200 watt plat seasonics.so without a hot psu at 12.2 volts hash drops on the top unit from 3650 to 3250

### Reply 1:
Seems you have a bum A6, unfortunately.

### Reply 2:
the top one does well with more power it was at 3650 with hotter volts of 12.2It is not as good as the bottom one.The bottom one is really good and can get to 4000 with high volts.The info I have learned with the meanwell has shown me both the s-7 and the avalon 6 want 12.2 volts not 11.9 voltsand server psus will be the best choice not atx .now 2 with 8.5 amps doing 6750 gh is8.5 x 240 = 2040 watts2040/6750 = .302 watts a gh plat psu's at the pdu meterI am looking to get7400 gh with the 2 x 2000 power supply and use under 2300 watts at the wall.the key is the 2 seasonics on amazon = 450 usdeven 2 evga 1300 on amazon = 400 usdthe 4000 watt from finksy/j4bbrwock is 50 for breakout board 50 for cables and I got 2 psu's on ebay for 50 so 150 vs 400 for 2 avalon 6's lots of head room will allow for lesser fans.

### Reply 3:
Definitely. Server PSUs on 240V all the way. 120V and ATX is outmoded.Only reason to use 120V is if you're mining in a location that doesn't permit you to modify the existing electric infrastructure, IE an apartment.

### Reply 4:
Bolded the 120 volt infoI will be returning my two seasonics since they do not run as advertised. (they suffer from voltage sags at 1050 watts)And I will have more money in pocket using the 2x 2000 setup.I decided to load balance the seasonics ie of each seasonic to both avalon 6s will post back later.

### Reply 5:
Are you measuring the sag at the the PSU modular connector or at the PCI-e connector (ie at the end of the cable?) surprising that 2 Seasonic would be defective. Remember that it's normal to lose voltage to wire resistance, you can counteract by using more wires. Perhaps 2 wires per PCI-e port with a 2 to 1 ""Y"" connector.

### Reply 6:
No question that it is partly a wire issue.here are load balanced seasonics rather then 1 seasonic per unit.I know that when load balanced you are getting a true measure.what happened is the better one was on the seasonic using custom wires.the poorer one was on the seasonic using stock wires.when I took from each seasonic the poorer avalon improved.so the problem is more shit stock seasonic wires although the two machines are not quite =one more test will be done on sunday I will alter the order of machines to the rasp pi

### Reply 7:
to cool garage I added a box fan and opened back doorI then put in second seasonic 1200 watt platthe pdu amps drop all the way down from 9.9 to 8.5 amps

### Reply 8:
Phil did you get the parts today?

### Reply 9:
Yes I did I just hooked up the 2 avalon 6's and I am using the middle power setting on the 4000 watt break out board.middle power on the lcd is 12.17 voltsjust about 3500 gh for each avalon 6I will let it settle and do more photosbut if you look above the seasonic were much lower in gh 6700gh for twoto be fair my garage was at 91f because outside temps were 72 f . About 25 f above normalhit switch and volts moved to 12.57 on metergui results are niceI am close to 3900gh x 2 = 7800gh

### Reply 10:
The gui screen shot is nice but do you have photos?

### Reply 11:
Yes bear with methis is the 2880watt break out board with sets of 3 ft 15 gauge custom pcie cables white and with 2 ft 15 gauge custom cables yellow.I did all in white 15 gauge to be consistent for tests.here is the 4000 watt break out board with 10 3 ft cablesit is set to mid speed.

### Reply 12:
You can turn the small trim pot to the right to increase the voltage even further, if you wish.I set them to 11.75-12.15-12.60 or very close before shipping.The more you turn to the right, the more offset you get from the original 12v (positive or negative offset, depending on the switch position).Middle position on the trim pot gives you the results you currently have.Negative offset is limited by the PSU itself, but it seems we aren't really saving anything by undervolting.

### Reply 13:
why is ur miner under a blanket?

### Reply 14:
@ rockyforever it is under 2 blankets first one is fire proof it lowers noise and directs air flowThis 4000 watt setup is amazing! yeah you need a better quality fan mount plate as it is easy to crack.but it is really quiet with these fans<link> you can not go over 2200 watts if you use them.So I have these on order<link> was able to run 2 avalon 6's at high volts 12.57 they did 3850gh each or 7700gh the psu was warm but okay.I have a lot of fans and I wanted to hook up the s-7 and run all three on the one psu.here is final setup notice 20 pcie cablesI replaced 1 evga 1600 watt t2 400usdI replaced 2 seasonic platinum 400usdso 800usd worth of atx psu were replaced by your 1 4000 watterI am running 1 s-7 and 2 avalon 6's hashing 12000gh using 3600 watts3 cooling fan<rest of thread truncated>
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11480,"Date: 2011-07
Topic: Mhash Charting Software
### Original post:
Does anybody know if this type of app exists yet for windows? I am interested in seeing my Mhash over time in a chart form.

### Reply 1:
I wouldn't be plugging a pool for promotion but as far as I know, bitclockers.com has that graphing feature for hashrate. Might want to check them out.

### Reply 2:
so does <link>

### Reply 3:
yes, I'm writing a web-based one that tracks your miners over time and reports on their stats. It currently supports Slush's pool but I am writing API connectors for BTCguild and Deepbit as well. Download here via SVN: <link> my miners here: <link> am currently only graphing with sparklines but the first release will have a separate tab for analytics that have big graphs with timelines and all the fancy regular stuff you would expect from miningmonitor.com type of app. Stay tuned for more.

### Reply 4:
Nice!!

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18240,"Date: 2013-11
Topic: Redfury Bitfury ASIC USB Privilege error.
### Original post:
Hello, I ordered the RedFury ASIC and I keep getting this error when I go to mine with it: <link> It says ""Do not have user privileges to to open \\.\COM11""I would really appreciate it if you could tell me how to fix this. My block erupters work fine it is just the redfury...

### Reply 1:
Yeah, how about giving us some useful information like:- What OS you're running- What mining program you're usingWe're good, but we can't teleport to your computer to see what's going on...

### Reply 2:
Or can we..?

### Reply 3:
I am using Windows 7 and I am using the mining program bfgminer.

### Reply 4:
There is a support thread for these devices here <link>

### Reply 5:
I still need help. I would really appreciate it if someone helped.

### Reply 6:
Did you use Zadig to install the USB driver?

### Reply 7:
No, how do I do that?

### Reply 8:
How do I do this? I tried this before but it installed the wrong driver I think.

### Reply 9:
Download Zadig. Plug in the miner. Run Zadig as administrator. The miner should show up. If it doesn't, from the menu select the show all devices. Pick the miner, select the USB driver. Click on install (or reinstall)Send me half the coins you mine. (The last step is optional).

### Reply 10:
Which driver do I install?

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11750,"Date: 2012-01
Topic: some donate, some don't, collection for cgminer
### Original post:
10btc from me too awesome idea onya jjiimm_64

### Reply 1:
I Heartily Endorse This Event Or Product <link> seriously, wow, thanks! Though I'm partial to Sapphire cards, I guess I really shouldn't complain at all. These things cost 700+ dollars in .au where I am so I still wouldn't dream of buying one for myself.<link>

### Reply 2:
Definitely stick with Sapphire if possible. I know they're all reference boards, but many of the other brands are just becoming ""cheap"" (not to be confused with ""inexpensive""). Sapphire is doing a damn good job right now and actually includes some accessories with the product (the XFX card came with almost nothing). I'm trying to stick to Sapphire and MSI right now for the most part (unless I get a smokin' deal on something else).

### Reply 3:
add 7.58811018 Btc

### Reply 4:
I already bought the xfx, but if the donations come in quick enough, I did put one of these in my cart. I think newegg takes it out of avail if you have it in your cart. but I dont know for how long.<link> I was wrong, my cart was empty the next morning. sorry ck it will be the xfx unless more saphires come in.

### Reply 5:
I have this 10, but dont know who it is from( [account] => ck7970 [address] => <truncated> [category] => receive [amount] => 10 [confirmations] => 17 [txid] => <truncated> [time] => 1327518111 )

### Reply 6:
""Flattend"" that amount a little.

### Reply 7:
yes, which means I will probably eat the rounded amount since I rounded up.Isn't there anyone else that want to be able to use cgminer with the 7970, and see it optimized (sorry ck if I am raising the expectations too much )we are halfway there... I have the card now. Well, UPS said they delivered it.

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21187,"Date: 2016-12
Topic: Antminer U3 Not Working
### Original post:
So ive had my antminer u3 for about a year now, and im having issues with it that i cant resolveWhenever i plug it into the power, everything goes as expected, then when i plug it into the usb, both lights come on automatically, like, once you start mining with it, a second light will come on other than the power indication light, however, as soon as i plug it in, both lights come onI cant figure out what to do, please help me, its nothing in cgminer or anything, its with the miner, help

### Reply 1:
I had the same problem with one of mine. Sold it on eBay as spares or repairs.

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15083,"Date: 2014-04
Topic: ISU breach?
### Original post:
Has anyone heard about the security breach at Iowa State University? It sounds like 5 of the college's servers got hacked for the purpose of generating bitcoins. I've never heard of anything like that being done before...<link>

### Reply 1:
yes well this is possible I heard many times about malwares that steal your power to mine BTC So .. malware can infect thousands of computers, and mine this is interesting.Perhaps they had bad security. Lames.

### Reply 2:
Synology produce NAS. Celeron & ARM.Low power procesor.Why Bitcoin ? Maybe scrypt coin !

### Reply 3:
You can now rent residential, commercial, and storage spaces on this campus with btc and alts. If you'd like more details please contact me.

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    ""hardware_name"": ""NAS"",
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17131,"Date: 2012-05
Topic: BAMT Help
### Original post:
Hello,I'm installing BAMT for the first time and need help configuring my GPU. It says on the screen that I can use autoconfig. What is that? I was planning on just editing the bant.conf file but anything easier would be great. Thanks!

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20421,"Date: 2015-05
Topic: BELKIN 8 Feet 12 Outlets 3780 Joules Surge Protector
### Original post:
ModelBrand BELKINSeries Home/OfficeModel <truncated> 12Outlets Type Surge SuppressorsCord Length 8 FeetInput Voltage 125VOutput Amperage Capacity 15Output Watt Capacity 1875 WattsAC Suppression Joule Rating 3780 JoulesEMI/RFI Noise Filter 150K Hz ~100M Hz, up to 75dBClamping Voltage 330 VoltsUnit Weight 2.2Features 3780 Joule energy rating provides maximum protection of all your sensitive electronic devices 12 Surge-protected outlets supply complete, 3-line AC protection 8-foot power cord delivers optimal, safe AC power through a 14-gauge heavy-duty cord Filters EMI/RFI noise up to 75 dB reduction 1-in, 2-out RJ11 Telephone/Fax Surge Protection Coaxial protection Right angle plug Simple detachable cord management system to help reduce cable clutter Covers each outlet with sliding safety coversSo would I be able to plug in say multiple 1300 watt PSU's <link> to it and have them run at full power? Does this output Watt Capacity of 1875 on the surge protector limit as such? And if so how would I plug in multiple 1300 watt PSU's into one place, What product would allow this? Electricity Costs will not be an issue for me (already calc'd)

### Reply 1:
I'm not sure where you're located, but the question you need to be asking is ""can the outlet into which I plug in the surge protector support the kind of power draw I'm asking of it with multiple 1300W PSUs?""If you're in the US and are using a typical wall plug, the answer is a pretty definitive no.

### Reply 2:
Mhmmm indeed makes sense. So if the outlet is not sufficient enough (which I know it is not) I reckon I'd have to make some phone calls... Thxs JB

### Reply 3:
If you are talking about 220/240 instead of surge protectors most likely you need to look into PDU's. They are plugged into high voltage and split it into a few different outlets.

### Reply 4:
Physical shape of receptacles and plugs defines its current (wattage) rating. A NEMA15-5 is only a 15 amp outlet. Meaning it can only power appliances of less than 1600 watts.However most computers (with 600 and 750 watt power supplies) are only consuming less than 200 watts. And maybe up to 350 watts peak for a very short duration. So we tell that computer assembler that he needs a 700 watt supply. Then help lines are not crowded out by teaching basic electrical concepts. Is your system so hot as to also toast bread? If not, then it properly consumers 300 watts maximum. To say more means you must buy and measure with a meter.

### Reply 5:
I have used a S4 on surge protector's much more power used then the 660-750 you mention and had no issues. Only thing I ever had problem was used to small of guage electric extension cable, it got hotter then I liked. Switched the S4 to a much higher guage extension cord.

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  }
]"
21213,"Date: 2016-12
Topic: How could one disable the fans on an Antminer S7
### Original post:
I recently decided to embark on the immersion of Antminers in mineral oil. Currently I have one S5 running smoothly inside the oil, and I am very satisfied with it. It is averaging 1.3-1.4TH at 40 degrees and the fan is running fine. However, yesterday I tried submerging my first S7 (the variant with only 1 fan), and that didn't go as smoothly. When it's starting up, the fan spins for a few seconds and then stops and continuously tries to boot up. I tried unscrewing the fan from the rig and holding it above the oil. When I did this, the miner started hashing normally.Basically, I was wondering if anyone had any insight on how to remove or disable the fan on an S7. I tried removing it, but the miner doesn't want to run unless their is an operating fan connected to it. Overheating and fire are obviously non issues if I can maintain 40 degrees. Therefore, I would like to just ditch the fans altogether and just use an external source to circulate the oil. I would appreciate any help you could give me.

### Reply 1:
did you try setting fan on smallest manual setting possible in the gui. Some people did 20%, not sure lower than this is possible. In addition, i don't have any experince with single fan models. they could have a different setup.Not sure that it would help, but it might since S5 fan did work in the oil somehow.

### Reply 2:
At worst case probably read the PWM pin from the miner into an Arduino or similar then feedback a pulse signal to the miner to emulate the Tacho connection from the Arduino.Should be easy to do in software by say setting miner at 20% then reading tacho pulse frequency on a scope.Thinking about it you could probably then ditch the PWM pin, leave the miner at way 20% fan speed and just feed a pulse back to the miner.Something along those lines ......

### Reply 3:
I've recently swapped fans on my S9 for other delta models to reduce fan noise. I can safely say that when I swapped the existing rear Fan for a delta afb1212she it ran quieter and the Rpms were a lot lower.My point is try a different fan as one that spins slower may well have better static pressure properties so may not causing the rebooting issue.

### Reply 4:
In oil immersion would if be better to throw the fans away and use an oil pump to circulate the oil round a small cooling radiator then introduce back to the immersion tank? A decent oil pump would be required but with some small bore tube I would probably make some jets to introduce a high flow over the cards. Just food for thought.

### Reply 5:
Cut the blades off the fan so just the center spins.

### Reply 6:
Nice one!

### Reply 7:
I'm really interested in the better fan?we all know bitmain will buy the cheapest option that will do the job.So I'm sure there exist, just as efficient or better fans

### Reply 8:
The Delta AFB1212SHE 4 pin 1.60A at 30% fan speed setting ran at 960rpm and worked well. Ive currently got two replacement fans from www.eyeboot.com (klintay on this forum) and they are QFR1212GHE 4pin 2.70A at 25% fan speed setting run at 1800rpm but are nice and quiet unlike the original rear fan which was a JSL unit with a big hub and small blades which whined.I can recommend the QFR and according the deltas own website the QFR is designed to be quiet and still perform extremely well.

### Reply 9:
That is exactly what I am doing. I just need to find a way to get them to run without fans connected.

### Reply 10:
Is there any sort of custom controller that can accept Antminer hashing boards and doesn't require fans? Perhaps a modded firmware that I can install on the miners.

### Reply 11:
Well, you could switch to the F1 firmware. This will allow you to run 1 fan instead of 2 which might be better than nothing.I know the folks running sp30's in mineral oil modified or replaced the fans that they were using so they could use them in the oil. I think a very slow moving fan would actually help circulate the oil...allowing for additional overclocking? Let us know...these s7 blades (in theory) could take 800-900 watts ea. if the 3x pci-e plugs meant anything.

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10630,"Date: 2017-10
Topic: MOVED: Avalonminer 741 x 2 , multiple pools
### Original post:
This topic has been moved to Trashcan.<link>

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2169,"Date: 2013-11
Topic: [OUT] ASICMiner Blades 10.7gh - .70 BTC - Free Ship - Pre-made power connectors
### Original post:
Sold out. All orders shipped today.

### Reply 1:
Hey i know your out of the blades, but do you know where i can go to buy the power connectors ?

### Reply 2:
I sell them. .025 BTC each with free shipping.

### Reply 3:
Any discount for multiple ? also how are they shipped ?

### Reply 4:
Sure, let me know how many you need. Packaging depends on how many you order.

### Reply 5:
And here's an official sale thread for the power adapters, along with bulk pricing:<link>

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16195,"Date: 2022-01
Topic: Power factor correction needed for ASIC, yay or nay?
### Original post:
I'm still in the process of getting my ""farm"" setup and I've had some (a lot) assistance from a friend who's a master electrician. He started talking about checking out the power factor and looking into power factor correction capacitors. So I've started doing a little research on this but are these devices something that would benefit ASIC miners? Little backstory on my ""farm"" it was an older (1980s) industrial shop with tons of 8' T8 fixtures, 3 old heat pumps, just basically everything you'd expect from 1980's efficiency. We are using the heat from the miners currently to heat the shop (last week it was 2F outside and shop temp was 62F inside).

### Reply 1:
These days virtually all miner PSU's have active PFC and will not need external caps to keep the utility company happy.Now if you are running a lot of motors or very old switchmode power supplies that do not have active PFC then you may need to look at that. As for the big florescent lights -- maybe, though I'd think that if PFC was needed for them it would have been done when the place was built.

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4420,"Date: 2013-03
Topic: Avalon Asic Update March 1st
### Original post:
<link> the Newsletter)Clear for take off, abide a week late.Deadline has arrived so an update is in order, earlier this week the shipping problem is more or less solved and we are gearing up to dispatch the units, due to the week of delay from before compounded with lingering issues with the recovery from CNY the outlook for shipping time-frames are the following:Starting from next Monday, units will be en route to their country of destination and tracking numbers will follow maybe 2~3 days after (it is at this point onward which you can expect an email from us with the tracking information), we expect this process to continue to the 10th of March until all the units have been shipped out, if all is well people will get their units in-hand in the middle of March.Trade-In SituationAfter much thought, we believe we have figured out the best system for Trade-Ins that will allow people to continue to mine with their FPGA as long as possible yet still able to get their ASIC on the second batch on time. The process will work as follows:A week before batch #2 is ready to ship, we will make an announcement to those who wish to trade-in their last generation units to sent in their units, on<rest of post truncated>

### Reply 1:
Thank you for the update, got my newsletter this morning. Exciting times. Can't wait.

### Reply 2:
Now if they'd only confirm my order... !

### Reply 3:
Same here.Anyway I prefer to see they ship than handle support even if i would like to be cnfirmed for my order in batch 2

### Reply 4:
Me too. Shipment is most important in their list of priorities. Glad to see an update on the 1st.

### Reply 5:
When will batch 3 open?

### Reply 6:
Seems Avalon is in bulk shipping since today. I just received my another 3 units.Goods is shipped via sf-express.

### Reply 7:
Time to reap your rewards. Congratulations.

### Reply 8:
HOLY PAYDAY BATMAN!

### Reply 9:
Congratulations

### Reply 10:
Release the hounds!Or more like ""Let slip the dogs of war""Congrats on your additional ""babies""

### Reply 11:
1300 bucks a day ? Am I figuring that up right ? I believe he has 5 now. That's sickening if so.

### Reply 12:
Not for long.

### Reply 13:
But long enough.

### Reply 14:
On the contrary, it's what everyone who pre-ordered ASICs early dreamed of - nobody orders 5 ASICs ""to strengthen the network"".

### Reply 15:
let's watch the difficulty curve in these days.

### Reply 16:
By the time I get my Avalon 2, I'll make around.. $30.00 a day?

### Reply 17:
Looks like it and it's all because we ""common folk"" that have paid up money in front are not ""special"" and have no ""entitlement""This has been a great experience so far ;-)

### Reply 18:
In a few decades, I plan on selling my Avalon as a collector's item at Sotheby's or something.

### Reply 19:
Looks like March will bring huge leaps in difficulty, 250 or so Avalon @ 66 GH/s + what looks like 25 x 80 GH/s pre-assembled units from ""PrimeAsic - 80 Ghash/sec Asic Miner""<link> and ASICminer also putting the rest of their 12 TH/s onlineIf BFL joins the party in April then the outlook for batch #2 orders is going to take a long time to break even... Too bad batch #1 wasted an entire month by shipping out so late...

### Reply 20:
Are you Chinese? I see the sf-express When did you place your order?

### Reply 21:
Lucky I don't want one, otherwise if I held them to their word they'd have to ship me an Avalon as soon as I sent them one of my Icarus and paid the difference

### Reply 22:
This is where power usage will become the critical factor.

### Reply 23:
You forget the little detail where you have to be able to get an order in first, you know, queuing at the DDOS'd walletbit transaction site with the rest of the plebs

### Reply 24:
Anyone care to place bets on all this?I'm worried another one of my bets are going to lose out

### Reply 25:
I thought you couldn't afford to buy them?

### Reply 26:
What is your latest bet? (I don't gamble)

### Reply 27:
I can't

### Reply 28:
Has anyone outside of China gotten a tracking number yet?

### Reply 29:
Here take a look at this thread. Looks like this person is in China.<link>

### Reply 30:
Thanks.

### Reply 31:
I just copied this from my signature My Current Bets...BFL will Deliver ASIC before bitcoin difficulty reaches 6,500,000The BTC Mining hashrate will reach 50TH before BFL deliver an ASIC

### Reply 32:
Are you betting against them?

### Reply 33:
any news there?

### Reply 34:
anyone else called DHL lately to see if there's anything inbound to their address?

### Reply 35:
Seems no. Probably the day will be tomorrow. If we get a copy of the invoices which are traveling with packages it will make my day!

### Reply 36:
Can't wait to read about all the happy people.

### Reply 37:
I think there is a big Chinese conspiracy here. Yes a couple people have got them. But other than that only the Chinese

### Reply 38:
Same here, nothing yet besi<rest of thread truncated>
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17292,"Date: 2012-10
Topic: Guiminer is invisible
### Original post:
Searched here and this fixed it:IsepickFull MemberPosts: 180IgnoreRe: GUI miner INVISIBLE!September 08, 2011, 12:14:02 AM#12For Windows 7 also try going to: C:\users\<your user <truncated> open that file, go to the end of it and you will find an area called 'window position' that gives x & y coordinates. Try adjusting the first number I believe, which should be the x coordinate. Good luckReport to moderator Anyway just put it here for posterity, thanks Isepick!I believe this problem was *caused* my not saving changes before closing. I had a really high ""x"" number in my pclbm file, changing it to 3 solved my problem.

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1190,"Date: 2013-08
Topic: [GROUP BUY, CLOSED] Buy a 100GH/s KnC Mercury..., get $100 or BTC back quickly!
### Original post:
8/11: Well seems no one's interested in 5% discounted KnC miners on the low end with it being escrowed & all funds being handled by KnC. Interesting that they haven't gotten me a reseller ID yet 2 days later. Guess they'll have to try other marketing techniques. Closing this out.Just signed up for the KnC Reseller program. Unlike others, I'm targeting the 100GH/s KnC Mercury at $2K shipping in early to mid-October (most likely). Buy a KnC Mercury Miner through my reseller ID & after 10 sell, I'll pay out 10 folks BTC or Paypal (preferably & faster). I can pay you Paypal immediately or BTC within 3-4 business days.My wife & I are veteran ebay seller/buyers since 2003 & have a 100% feedback rating (links avail on PM). I recently sold 3 Jalapenos there, both in-hand & pre-orders. I've also been active on the boards here in the short time I've been here & have also been contacting folks for purchasing their gear for my own use & for resale.Been active on Reddit over a year, here's some links of me sharing BTC & BTC mining knowledge - what little I have):<link> (gotta start somewhere, I guess)<link> sign up here or shoot me a line but I aim to get a discounted Mercury & will pay 10 folk<rest of post truncated>

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4602,"Date: 2013-03
Topic: Companies who have asic bitcoin chips and who are willing to sell??
### Original post:
Hi bitcoiners,i ve tried to contact several people/companie who claimed to have chips and willing to sell,but noone of them have answered and gave any information about it.If any of you had more success than me,please share and let s find a way to work this out.thank you

### Reply 1:
Avalon... sold out third batch.BFL... you can buy but its very open if and when you get a miner.Asicminer... will start selling miner soon but with an auction. This will mean a high price.No other companies to see.

### Reply 2:
Ah, ok, i didnt see your name. I didnt get answer from bfl and avalon too.

### Reply 3:
i m talking about chips only,will hire some guys to finalize the product

### Reply 4:
There is already a thread for this<link>

### Reply 5:
yes i ve read that but it seems you have as much success as me

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23086,"Date: 2019-09
Topic: S9's -Where do the input/output fans connect too?
### Original post:
Hi AllI have just been given an S9 that would not run, exhaust fan was faulty.I then went to reconnect it and it was attached inside port/socket of the two?I then checked all my miners and around 10% have the input to outside socket/output to the inside socket?I have always gone by inside/=input, outtake=outside.Am i missing something here? Or does it not matter as i have both and all have been running for months.Cheers

### Reply 1:
In their infinite wisdom I don't think Bitmain ever came close to a standard fan assignment. What fan plugs into which controller fan socket varies between the batches. All that matters is that whatever sockets that batch look at get feedback from the fans.

### Reply 2:
I agree, useless company, they don't care as they know they won't get returns...Ah well.Fans show varying speeds when connected either way BUT temps are definable lower with intake/inside, exhaust/outer.

### Reply 3:
Yes because normally one is slower than the other (ie 4k vs 6k rpm). But you could just use two 6k fans and it won't mind. Connector position is really unimportant.

### Reply 4:
So which output gives the lower PWM to create the neg pressure, obviously two 6k fans would be different as the outputs are telling.The newer models use lower amperage fans on the intake but same speed. RPM to Wattage ratio to save power seems the only logical answer.

### Reply 5:
This is just my guess, but i think it occurs physically, not logically. By having one weaker than the other, it creates the difference. The controller is probably just sending the same thing, if you send 80% to a 4k, this results in 3.2k, but to a 6k fan it is 4.8k. Think Chinese way, cheap, make it cheaper. Control them separately? no way, that's double the effort and costs (and remember the controller actually has more, you can solder the plugs back and they all work), plug any two fans in any position and the firmware is happy You can probably use more than two, but i have no idea what is the current load limit of the poor thing.With both being 6k but one with thinner blades than the other, i guess you get the same result with numbers looking prettier. Main reason to do that would be to save some cents with the cheaper fan motor.I wonder how is that done with S17 4 fan configuration... Two strong and two weak?You get negative pressure as long as your exhaust wants to move more cfm than your intake, however you do that doesn't matter. What happens if you get equal pressure? Probably nothing bad, you just are using a more expensive (and noisier) fan in the intake.But be my guest a<rest of post truncated>

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15419,"Date: 2014-11
Topic: technobit hex16a2 help?
### Original post:
I have as the title says lol im using a cgminer build for this and im only getting 15GH/s the most it can do is 24 gh/s how do I go about doing that? heres a screen shot <link> did try technobit's own gui but that didnt seem to work for me...

### Reply 1:
give me TW access and I'll try to fix it for you

### Reply 2:
Wrong frequency setting dude. Change it to 1400 or 1500.And change voltage to 1100mvTechnobit HEXMINER is a little tricky. Not all of people managed to use it.I suggest you use TPLINK TL-MR3020 as controller, cheap & low watt. For more info <link>

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8104,"Date: 2014-07
Topic: Mining Pointless? ? ?
### Original post:
Thats like converting gold to silver. Scrypt probably will never get anywhere near the value of Bitcoin.

### Reply 1:
so you are mining bitcoins and exchanging them for other crypto-currencies? Not sure how this relates to the title of your thread

### Reply 2:
Bitcoin mining pointless? No.Bitcoin mining profitable? For you, probably not.The OP and this thread pointless? Yes.

### Reply 3:
i think you need to edit your tittle for S1, yes it's not profitable anymore, but it's not pointless, since you still can generate few amount of BTC.why the hell you exchange it to altcoin that altcoins are worthless if you don't swap it to BTCanyway, what are ith and eth ?

### Reply 4:
becauoucse altcoins might incase in value in years to cum and with 400gh i can get 1 litecoin a day the litecoin difficulty is very slow so i can get into the hundreads of litecon when bitcoin goes up litecon might be around $50 per coin in addition i hath 2 million doge at this point in time im not sure maybe half litecon/dogei hath 30 bitcoins now is that good? i hath blown most of my money but since i dont need to pay bills its all good now...ideally i wold like to have had 50btc at this point in time wisa couda shouda based on the curreont price.

### Reply 5:
altcoins wont necessarily go up when bitcoin does, they got where they are now largely as hedge bets or pump and dumps.as for doge - dump it now before it is worthless. The mining reward halves many times faster than any other scrypt coin (particularly LTC) and once mining LTC or another scrypt coin vecomes more profitable than dogecoin, the network hashrate will rapidly windle and expose the entire blockchain to 51% attack by a malicious scrypt pool or farm, rendering the currency worthless and making LTC the only valuable scrypt coin, as BTC has done to sha256. Doge will not hold any value beyond 2014

### Reply 6:
It would actually make more sense to mine alt coins and convert them into bitcoin.I am pretty sure that S1s are no longer profitable in most places in the country (based on average electric costs).

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17757,"Date: 2013-06
Topic: Embrace yourselves! Summer is coming!
### Original post:
Alright folks,The summer is almost here and while mining the room temperature gets really hot, which reduces the delta T, which makes cards run hotter.So how do you keep your room and rig cool?

### Reply 1:
Summer is only an issue for half the world.

### Reply 2:
I was thinking of this! I have miners going for the first time this summer. All winter I have a naturally cool 10-16 c room (attic) but it gets to 25/27 C in summer for a few weeks. Was looking at an air con machine, but that's an expensive electric product!

### Reply 3:
13C here in South Australia atm...Miners keeping me warm at 5am in the morning

### Reply 4:
my rigs are in the basement, that helps, earth cooling

### Reply 5:
If ambient temp goes up for 10 degrees how much it affects a gpu?

### Reply 6:
Yes, I think we could all use some hugs. Even from ourselves.I'm going to be living in another country for a while, but my miner will be sitting in my vacant room AC on full blast and a ceiling fan 24/7. My bitcoin partner will be keeping a virtual eye on things but it's important we get to 99.9% uptime. Oh let me not forget to mention I don't pay for electricity or cooling and my cards are all under 70C.

### Reply 7:
in data centers heat removed by powerful fans installed on top of server racks and pushed by ducts to outside. You can do something similar. Main point is the heat have to be removed from room.

### Reply 8:
A couple of box fans in the windows, a few other carefully placed fans, and no problems. COLD HOT AIR AIR | ^ V | <truncated> | ^ INSIDE V | --> FPGAs --> GPUs -->

### Reply 9:
I embraced myself once... my mom caught me and i got a stern talking to from my dad.

### Reply 10:
Rum 'em till they melt

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    ""hardware_name"": ""GPUs"",
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]"
4403,"Date: 2013-03
Topic: Latest update on BFL shipping 21/02/13
### Original post:
I'm just hugely confused here. I'm not a BFL Customer, and I haven't really been keeping up with the BFL story, but I happened to see this thread and this update has me puzzled.I should firstly state that I have more than a bit of experience with electronics and semiconductors. I have been in the industry for a long time, and I deal with all sort of IC packages.That said, bumping is almost always a term used to define the process of 'Bumping' a wafer so that it can be used as a flip-chip. flip-chips are bare, non packaged dies that are then attached directly to a circuit board (PCB).I was under the impression that BFL was using QFN packages for their ASIC chips. If this were the case, no bumping would be necessary. The bare wafer would be cut into individual dies, the dies would be wire-bonded to a QFN carrier and the QFN would be reflow soldered to the circuit board.Is that no longer the case? Did BFL switch from using QFN's to using direct flip-chip assembly? I thought they were planning on being able to build these circuit boards in house? It's been a long time since I looked at MyData equipment (wayyyy too slow to even be on my radar), but the last time I did, there was NO WAY <rest of post truncated>

### Reply 1:
Yes, BFL said they switched from QFN some time ago, due to some heat issues.

### Reply 2:
Gotcha. Missed that update. Thank you for clarifying.Enigma.

### Reply 3:
There is a fair chance BFL still has to find that out. Fully expect a ""oops, now we have the wrong equipment"" or ""oops, those BGA balls crack without underfill"" or ""we cant chew bubble gum fast enough to underfill our chips"" post by Josh in the next weeks.

### Reply 4:
I'm not a huge fan by the amount of trolling that usually goes on in these kinds of threads, but this made me lol.

### Reply 5:
to find the actual latest updates on BFL ASIC status, you must dig:IMO this is part of the ""let the mark down easy"" stage, where there will be many delays and very weak excuses.

### Reply 6:
I'm not sure that there's any reason to believe that bumping, packaging and board assembly of the second 6000 chips is going to happen any more quickly than the first. Batch 2 is also going to be a small order which facilities are going to fit in around other work and the likelihood of all the facilities having open slots so the process flows seamlessly is small.

### Reply 7:
Thanks for sharing this, Micon. Good find.Seriously! BFL (Josh) is one bunch of arrogant amateurs! It's like coming 10 minutes after closing hour to a gas station saying: ""Hey! Give us 2 fl.oz of gasoline. Pronto! We'll pay you 20 cent extra!"".Anyway ...I thought February would be the last month where I make good money betting against BFL - but it seems March will be a save bet too.Looking forward to get my payout from this one: <link>

### Reply 8:
It's great to say that the bumping facility can't wrap their heads around urgency. In fact the problem seems to be BFL being unable to wrap their heads around the fact that you can't leave organising these steps until your chips are ready to roll out of the fab because these facilities book slots many months in advance.And ""blank cheque"" my ass. They may have offered to pay over the going rate for urgent orders, but let's not pretend that they're willing or able to pay 10 or 20 million hurry up the bumping.

### Reply 9:
I'm Keith Apicary at this point.I've focused on 'the classics' and resigned myself to not think about mining (first, second...whatevs) with shiny new, tasty technology.*Goes back to playing Galaga*

### Reply 10:
You usually have much to say about BFL. How would you evaluate this setback for BFL?D

### Reply 11:
If this is a scam I have a feeling someone might be getting ""bumped"" off eventually.

### Reply 12:
They've cemented a reputation for themselves that will only be rectified by sufficient market pressures. I.e. they couldn't run a profitable business in a competitive environment where their product, at this point, is essentially Public Relations.

### Reply 13:
If BFL has enough funds to offer the bumping facility a ""blank cheque"", then they have enough funds to engage someone to troubleshoot this project. Josh is clearly out of his depth in terms of managing customer expectations - it's time to hand that job over to someone else because this isn't going to end when Batch 1 ships. People want credible reassurances that the schedule for the second 6,000 chips is going to be better managed, and especially that the batch of 75,000 chips is going to be made into actual units and shipped some time this year. Someone needs to get this project back on track and they need to explain to existing and potential customers how that's going to happen.Deflecting blame to the bumping facility is unacceptable. It's up to whoever's in charge of the project to ensure that contractors are chosen wisely, that contracts are locked down, and that contra<rest of thread truncated>
","[
  {
    ""hardware_name"": ""IC packages"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""flip-chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""QFN packages"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""circuit board (PCB)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MyData equipment"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFL ASIC"",
    ""hardware_is_owned"": false
  }
]"
17076,"Date: 2012-03
Topic: SOLVED: Win7, GD70 - Network Cable Unplugged after soft boot
### Original post:
I have a weird Windows 7 issue.When I do soft boot (via Restart) my GD70 built-in network adapter boots disabled with ""network cable unplugged"" error.Unplugging the cable and plugging it manually (while Windows is running) enables the port and I get the green led light and network adapter is functional. Also, changing any <truncated> causes the adapter to be re-activated by software only.But when I boot Windows, the adapter does not come up.so far I have tried:- updated GD70 BIOS to the latest- updated Realtek drivers to the latest- reset CMOS via jumper- changed speed to 100Mb/s from ""auto sensing""- disabled ""Green"" (pucking) power management- disabled ""power off"" by OS (under <truncated> management)- booted with LAN disabled in the BIOS, followed by boot with LAN enabledI'm running out of ideas. My thinking is it is related to power management or hardware itself to put this port into this ""deep sleep"".Any ideas, similar experiences?

","[
  {
    ""hardware_name"": ""GD70 built-in network adapter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Realtek drivers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CMOS"",
    ""hardware_is_owned"": true
  }
]"
11378,"Date: 2010-11
Topic: Buffer overflow
### Original post:
This has happened to me every time a hash with zeros is found on my 64-bit Atom system:Code:DBG: found zeroes in <truncated> 8150287 hashes, 123.22 khash/secPROOF OF WORK FOUND? submitting... *** buffer overflow detected ***: ./minerd terminated======= Backtrace: <truncated> mentioned the problems with -march=atom CFLAGS previously, but this does not go away when changing the -march.

### Reply 1:
Fixed in git commit <truncated> just pushed to cpuminer.git.

","[
  {
    ""hardware_name"": ""64-bit Atom system"",
    ""hardware_is_owned"": true
  }
]"
19839,"Date: 2014-09
Topic: How to easily setup solo mining on testnet3?
### Original post:
No one seems to be mining on the testnet atm so we can't really test I have a spare antminer S3 that I can point to it, but no idea how to actually set it up real quick?if there is quick and easy way to do this, i'll really appreciate it, since it's good to get it done before the end of the work day and week here...

","[
  {
    ""hardware_name"": ""antminer S3"",
    ""hardware_is_owned"": true
  }
]"
13124,"Date: 2014-06
Topic: Pepper Mining App
### Original post:
I just released a early preview version of the Pepper Mining app that works with cgminer and any board using the HF Golden Nonce chip Habanero boards are using.The idea of this tool really is to help you get proper cooling on your boards since this is one of most important aspects of being able to increase hashing rates. I have tested several Habaneros over the last week and getting the cooling head aligned isn't an easy task.Steps:1.So what I do is put the cooling head on and tighten it till i start to feel a decent amount of resistance on the screw heads (you will need to play with this to figure out what that is). Then I launch cgminer at a low hash clock rate such asCode:cgminer --hfa-fan 100 --hfa-temp-overheat 110 --hfa-hash-clock 300 --api-listen --api-networkIf you applied enough basic pressure this should be running fine, if your getting thermal trips then you do not have enough pressure so find the screw or screws that need a bit more pressure.2.If its hashing launch the pepper mining app, and go to the stats graph, this is where you can see how well you did with getting cooling even.You can see here that asic 1 and 2 are a bit hot or could use some adjustments. As you ca<rest of post truncated>

### Reply 1:
I made an update to this app, so if you have more than one board plugged into your host you have the ability to select which one to get the data from, see screen shot here.You can grab the latest builds here here.Donations are welcome to continue app development! <truncated>

","[
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""HF Golden Nonce chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Habanero boards"",
    ""hardware_is_owned"": true
  }
]"
6498,"Date: 2013-10
Topic: [CLOSED] Avalon ASIC chip distribution
### Original post:
Order Window ClosedThank you all for your support and trust.I will lock this thread now and unlock it only to post updates. All buyers should add it to their watch list.An update with the final numbers is currently being worked on and will be posted today.

### Reply 1:
Batch 7 final orders:Code:ID Chips BTC Address Note01 200 17.20 <truncated> 960 82.56 <truncated> 10 0.86 <truncated> 100 8.60 <truncated> 1150 98.90 <truncated> 20 1.72 <truncated> 60 5.16 <truncated> 70 6.02 <truncated> 40 3.44 <truncated> 20 1.72 <truncated> 200 17.20 <truncated> 50 4.30 <truncated> 20 1.72 <truncated> 10 0.86 <truncated> 20 1.72 <truncated> 360 30.96 <truncated> 190 16.34 <truncated> 50 4.30 <truncated> 250 21.50 <truncated> 10 0.86 <truncated> 40 3.44 <truncated> 10 0.86 <truncated> 30 2.58 <truncated> 30 2.58 <truncated> 25 240 20.64 <truncated> 150 12.90 <truncated> 50 4.30 <truncated> 20 1.72 <truncated> 20 1.72 <truncated> 20 1.72 <truncated> 100 8.60 <truncated> 30 2.58 <truncated> 50 4.30 <truncated> 100 8.60 <truncated> 20 1.72 <truncated> 120 10.32 <truncated> 20 1.72 <truncated> 20 1.72 <truncated> 20 1.72 <truncated> 20 1.72 <truncated> 300 25.80 <truncated> 500 43.00 <truncated> 680 58.48 <truncated> 100 8.60 <truncated> 320 27.52 <truncated> 100 8.60 <truncated> 30 2.58 <truncated> 10 0.86 <truncated> 110 9.46 <truncated> 40 3.44 <truncated> 120 10.32 <truncated> 1000 86.00 <truncated> 100 8.60 <truncated> 20 1.72 <truncated> 100 8.60 <truncated> 1<rest of post truncated>

### Reply 2:
Next StepsAfter finalizing the batch orders, all further processing steps are depending solely on Avalon's actions and responses.The rough schedule I am pulling out of thin air looks as followsbeginning of May: wait and see <-- we are heresecond half of May: Avalon releases reference design and documentationend of May: first chip samples get shippedbeginning of June: developers finalizing their designs and ordering sample chipsmid of June: developers assemble and demo their mining productssecond half of June: I collect shipping information for the chips orderedbeginning of July: first batches produced and shipped to memid of July: chips get delivered and I start distribution shipmentsThis is the ideal schedule based on the numbers provided by Avalon. We all know that realistically each step will be delayed by some non-predictable amount of time, so let us sit and wait a while. I will post updates as soon as they are available - no need to explicitly ask for them.Notice: After Sales Trades / SpeculationSeveral buyers changed their mind (either realizing they don't want the chips any more or speculating for a quick buck) and approached me to update my data on file to account private <rest of post truncated>

### Reply 3:
Avalon releasing Reference DocsAs announced in his thread, BitSyncom released an initial set of reference docs that can be found on GitHub.Buy backs and RefundsI have currently more folks interested in buying more chips than those asking to get them refunded. Therefore I am opening a limited buy-back window for all of you who changed their minds. The current demand is for ~4k more chips, so here is the process how to get your coins back:PM me your refund request witha single CVS formatted line: <forum nick>; <-N>; <-C>; <sending address>Note:this is the exact same line you bought your chips with, but now with negative number of chips N and negative number of coins Call or nothing - no partial refunds, i.e. if you bough 100 chips with one particular order, you can't get only 60 chips refundeda signature of that line signed with <sending address>if within demands, I'll refund you for the chips you gave back in fullNext StepsWith the initial set of reference docs provided, the active DIY designers have started to refactor their boards. BitSyncom assured that the docs are going to be completed in the next weeks.The next relevant step will then be the delivery of sample chips, which sho<rest of post truncated>

### Reply 4:
i want to buy more Chips . is there some available ?

### Reply 5:
yes,here: <link>

### Reply 6:
and here: <link>

### Reply 7:
Not yet, only minor refunds issued (less than 300 chips).Since in every batch I sold more than initially planned, the returned chips are going first back into a reserve pool. I will announce publicly should that number reach a given threshold over what I intend to reserve for the DIY and my own projects.

### Reply 8:
For the others near my region, don't forget my Asian Group Buy. Good if you want your chips sent to BkkCoins in Thailand.[Group Buy] Avalon ASIC Chips, Philippines (Dabs)

### Reply 9:
mjmvisser; -480; -41.28; <truncated>

### Reply 10:
Verified and refunded, see <link>

### Reply 11:
<link> at point 2...these chips will be available until at least end of the year, 2013.does it means if somethings going wrong we wait till xmas?oO omg...

### Reply 12:
Re-readThat means that, as o<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Avalon ASIC chip"",
    ""hardware_is_owned"": true
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]"
3595,"Date: 2014-08
Topic: Divided LOT of Antminer Jumper switch
### Original post:
If anyone wants to buy a large lot of these switches I ordered a full 500 I can offer a HUGE discount over what they are going for on ebay .009 eachover 50 .007<link>

### Reply 1:
I prefer these<link>

### Reply 2:
5 dollars vs. what you have listed on ebay 8 dollars ? I think the AntMiner switch is the better buy but thats just me

### Reply 3:
also, for anyone who wants one for free Check here<link> who picks up a S1 unit gets one free PSU . One per order .

","[
  {
    ""hardware_name"": ""Antminer Jumper switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S1 unit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
8401,"Date: 2014-09
Topic: Why QQ?
### Original post:
Rather than a giant paragraph, lets look at the <truncated> case:30000000 fucking threads QQing about them every daybitcointalk forum members probably make a decent chunk of the orders by $, due to singles, minirigs not exactly being impulse buys + the fact they spend SO much money advertising hereTheir 1000 donation to 'charity' was scummy as hellBFL can't be in a good financial position. Even if they had taken on 7 figure injections of cash, they've burnt SO much and have still made $0 from actual ASIC product that they're in a risky positionYou are free to refund whenever you wantLikely vulnerable to private litigations for the false promises and failure to deliverThe solution? A mass refund exodus. Everyone requests a refund at the same time. As many orders cancelled at once as possible. What if you're the last one in and they can't refund you, they get their assets frozen or seized? Better refund.The momentum is too much, the cash flow is too much, the investors bricking themselves too much. Forced to pull the plug, the rest of the orders get refunded.Edit: Added disclaimer, I have investments in ASICMiner and Avalon, however it doesn't change my outlook towards them. If I had<rest of post truncated>

","[
  {
    ""hardware_name"": ""singles"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""minirigs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMiner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": true
  }
]"
15031,"Date: 2014-04
Topic: BAMT Quick Start Guide For Newbies!
### Original post:
The FAQ says never to use sudo. You should be logging in as the root user. You will need to set passwords for both root and user.You should also mention using coldreboot instead of the normal reboot command.

### Reply 1:
Will update in a min Thanks for pointing that outStupid faq, says not to use sudo yet you need to sudo to get the root pw set :@

### Reply 2:
Bamt Quick Start GuideThis Guide will walk you through getting bamt up and running easily.This guide assumes the following things1. You have little if any linux knowledge2. You want to setup a headless miner (Screen would be nice for first boot if available)3. Your personal pc runs a version of windows4. You have a lan network that both your pc and the miner will be connected toNow that thats out of the way lets get started,Download the following1. Win32DiskImager2. Putty (windows ssh)3. BAMT (slow download recommend using all mirrors through a download manager)Ok Now you need a usb drive of atleast 2gb,All data on this usb will be lost so dont use one with anythign you need to keep still on it.Open Win32 Disk Imager and select the image file bamt_v0.5c.imgNext select your usb drive letter under the Device dropdown menuNow click WriteDepending on the speed of your usb this could take upto a hour to complete.Once the image has been wrote to the drive, plug the usb drive into the rig you want to run bamt on and boot it up,its a good idea to know what ip the rig is going to use when it connects to your network, so if you dont know hook up a screen to the rig and it will be displayed o<rest of post truncated>

### Reply 3:
i've been working with ssh in console your method is much more graphic xDhey, would you mind explaining how to configure bamt.conf to run cgminer instead of phoenix?

### Reply 4:
If you are logged in as root, you can just use 'passwd' to change the pass.I ssh in as root, then 'passwd' and then 'passwd user'

### Reply 5:
Il look into it

### Reply 6:
But if the root password is not set, how do you log in?

### Reply 7:
kinda chicken and egg eh?bamt autologins as root

### Reply 8:
but if its a headless unit!

### Reply 9:
you are provided the password, otherwise you would be attached to another object by an inclined plane wrapped helically around an axis

### Reply 10:
If the password is not set, when prompted for the password you just press enter...

### Reply 11:
Ive had it with this fucking os lolIt randomly stopped hashing on my card last night, card is fine just bamt being a bastardguess back to windows i go

### Reply 12:
That doesn't work.As a security feature in linux if password is not set you intentionally can't remote login. NULL == """". You can have a passwd of """" but root's password is set to NULLroot password must be changed before logging in via ssh. The easiest way to is to set root from direct connection (monitor & keyboard) before deploying. Alternatively if BAMT has any other usernames configured (i.e. ""user"") with a non-NULL password you could login to that account ""sudo su root"" and then use ""passwd"" to set root's password. Finally log out and login as root. I am not sure if BAMT has any other accounts configured though.

### Reply 13:
sorry to hear that. 0.5 added a ""feature"" called mother which when a card locks up it reboots the server and disables OC on that card. It is posisble that it what happened.I use cgminer and really just use BAMT for the OS. I find it more stable and easier to configure that way. Still I am considering offering a bounty for a cgminer only OS as BAMT doesn't support x64 and thus is limited to 6 or 7 GPUs per rig.

### Reply 14:
i was looking into it, but itd have to be a installable os, as you cant upgrade drivers with persistance the normal waynot too sure how bamt is allowing it but meh :/

### Reply 15:
You can upgrade drivers with persistence. Although driver changes are so rare it would simply make more sense to release a new version of the OS as needed.

### Reply 16:
Are you lurking on irc anywhere?

### Reply 17:
im just setting up my one now :3

### Reply 18:
Doesn't Kano have a cgminer simple OS developed? I could swear he has something like that in his sig.EDIT: here is the link: <link>

### Reply 19:
I was thinking more like a maintained optimized iso. Burn and boot. Like LinuxCoin (except updated sometime in the last year) or like BAMT but based on x64 and focused on cgminer.BTW I use kano guide for my rigs (and used BAMT before I needed 8 GPU support). Kano guide works and is invaluable but it is 30 something steps the first of which involves burning a CD to make the linux environment to make the USB key. Not exactly ""plug and play"".

### Reply 20:
I see now D&T. So is BAMT not working out for your rigs with cgminer? I thought it was included so it is pretty much plug and play.

### Reply 21:
BAMT is x86 only. That means no 8 GPU rigs (at least I have never gotten it to work). I am converting all <rest of thread truncated>
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    ""hardware_name"": ""USB drive"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""personal pc"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
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3926,"Date: 2016-04
Topic: DRILLBIT SYSTEM Miners - Avalon range available - Now $104.99!
### Original post:
Welcome to Drillbit SystemsAvalon boards available here: <link> BOARDS AVAILABLE: 0DRILLBIT THUMBS AVAILABLE: Temp NADRILLBIT MINIPLANES AVAILABLE: 6Newly updated pricingUpdate: Batch 1 and Batch 2 will be produced and shipped together. There will be no delay between the two batches.Price Drop on all Drillbit Systems Hardware!Drillbit Thumb 2.7 GH/s - TEMP NADrillbit 8 Board 21.7 GH/s - NADrillbit Miniplane - $30Drillbit Double Scroll - $30 Batch 2 now openAll orders please go to <link> Fill in the form and send BTC to this address: <truncated> orders are expected to ship in early November.Currently only accepting BTC payments. BITFURY chipsBITFURY 55nm ASIC chips, Demonstrated performance 2.7 GH/sec @ 0.835V (0.8W/Ghps)Early chance to get on board with next generation chips 10 times more powerful than Avalon chips.Introducing the DrillBit SystemAn affordable and expandable bitcoin mining system.The DrillBit system is the most versatile Bitcoin mining system available. It will expand to suit your needs. You can start up with a small mining rig, similar to many entry level rigs on the market, or you can start bigger. As you decide to expand your hashing capabilities, the DrillBit sy<rest of post truncated>

### Reply 1:
Thank you, it does appear things are not currently active there. Its a pity because I have been looking for some reasonably priced usb miners and them being in Australia was a real bonus. Oh well the search continues.

### Reply 2:
Check ebay there. I'd think I'm not the only one trying to sell my boards though I'm in the U.S.If you ask a question there Barntech may not answer but there are probably other still checking in on the page.BTW his address was on the page... you could send a normal letter with signature confirmation to see if he's still there.

### Reply 3:
Apparently somethings going on with Barntech as the alternative forum is gone. I can only hope the bad news ends with the website and that nothing directly occurred with those directly associated with drillbit systems.

### Reply 4:
I wouldn't worry too much about it. The website is still up.Maybe they are having hosting problem.I think they are just busy with other things in life.Exact error <truncated> ProblemsSorry, SMF was unable to connect to the database. This may be caused by the server being busy. Please try again later.

### Reply 5:
Yea but 4 months without a peep is unlike Barntech and even then Angus would say something. He usualy would at least chime in every few weeks even if it was to clean spam. I keep telling Australian tourists to keep their eyes open just for my sake .

### Reply 6:
could somebody please be a saint and post old and new firmware updates for the 8-boards?cheers in advance

### Reply 7:
Check your pmCheers

### Reply 8:
Hey has anyone ever come across an UPS or EAN number for the drillbit devices. I'm trying to make a page for it on amazon to sell my 4 blades and miniplane and it won't let me pass without one. If someones already built one on amazon let me know what the page is and I'd add it to the used inventory.I'd like to try for 75USD a Piece for my bitfury boards [flat rate Medium box rate shipping USPS] or the set of 4 for 200USD+- with miniplane and same shipping option [flat rate medium box USPS]Shipping estimates outside U.S might be 26USD+-[non business address] So I'll cross that bridge if I have to, but at least with Amazon I'm limited to the U.S and don't have to worry about import fees or paperwork.Thanks for any info or offers

### Reply 9:
Well,good luck trying for $75 each This was November 2014:<link>

### Reply 10:
I darn well don't want to sell them each .... too much support questions with no drillbit forum to point people to [though someone might be interested in an each price]. At least if Barntech knew he was going off grid for whatever reason we could have exported the forum elsewhere.There's still people looking for u3 devices and ours do just as much as they still do. Why else would I have bought Barntech's item at prices he listed. Theres still devices built without control chip built in if you buy bitfury straight from bitfury.

### Reply 11:
Would be nice if there was a hint of activity from Drillbit. Nothing in months off of Barntech's account, no response to messages and e-mails (contact form runs into the same db issue that the forum and online store do). I don't suppose anybody's tried the phone #

### Reply 12:
Tried the phone and left a message. He is probably still on holidays somewhere... The holiday season here lasts till somewhere in Feb.Cheers

### Reply 13:
If him and angus have been on holiday its been since early july U.S late Summer. Even when I'm on a holiday I still check my stocks

### Reply 14:
Cool, at least their phone still works I personally think he has moved on to other projects. That last run wasn't very profitable I guess. He almost had t<rest of thread truncated>
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  {
    ""hardware_name"": ""Drillbit Thumb"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Drillbit 8 Board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Drillbit Miniplane"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Drillbit Double Scroll"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BITFURY 55nm ASIC chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""4 blades"",
    ""hardware_is_owned"": true
  }
]"
13753,"Date: 2022-03
Topic: Asic.to Firmware 17Series • Optimized efficiency/Performance •
### Original post:
Antminer S17+/T17+ S17 and T17 custom firmware!If you own a mining farm/hotel or have a large number of S17 or T17 500+ contact me for a better deal and to hear about our partnership program.Asic.to has developed a firmware for the Antminer S17/S17 Pro and T17 Antminer. You can download and install it on your machine to improve your profits.Antminer S17 / T17 <truncated> ~+30%The ability to downvolt ~ 15-25%Antminer S17(normal) to 70-85th/s <truncated> T17 up to 65th/s (consumption ~ 3000W)Antminer T17 Downvolts to 1900w at 42th/s - 45w/th(Attention! Firmware is still new, in order to avoid breakdowns it is recommended to increase overclock <truncated> over 85th/s with S17 and 65th/s T17!ASICboost and autotuning: On all of our versions include auto-tuning frequency to get the best efficiency as well as utilizing ASICboost.Decrease Hardware ErrorsENERGY SAVINGNo <truncated> Disable: Support for high-efficiency liquid immersion cooling by disabling the fan in the settings.Lower Thermal Threshold: Lowers default overheat protection to ensure machines last longer.Full-farm deployment: Send out a configuration file to an unlimited number of miners on the same network. No reboot required<rest of post truncated>

### Reply 1:
@TaserzEarlier you've claimed the source code is public. And also the cgminer license requires it to be public.Where can we see the source code?The alternative miner firmware providers are no better in their actions than Bitmain, if they keep violating the license.If you can't respect the license, then I think you should write your own mining software.But that's something only few people have been able to do so far.

### Reply 2:
That is bitmains cgminer. well bmminer.. Ask them for the source code. Code injection != having the source code... You can open it up and try to dump cgminer from bitmain but it doesn't work that way since it is compiled code by bitmain. You can inject code thoughYes it is on github. Otherwise ask bitmain they compiled it they have source. If you hex edit a file do you have the source no...So you must contact bitmain for latest source. If you like I can give you email you can contact about this.

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    ""hardware_name"": ""Antminer S17/S17 Pro"",
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16904,"Date: 2011-08
Topic: ok so i got 18 GPU on my rig
### Original post:
what do you mean shows 18 GPU? does it show this in the CCC or device manager? if you're using the latest drivers, it shouldn't have this problem. maybe try to uninstall all AMD drivers, use drive sweeper to wipe everything clean, and install the latest drivers againlol when i read the title, i though you somehow got 18 GPUs to mine in one rig, which is pretty much impossible right now with the driver limitation. current AMD drivers can only address 8 GPUs right now, so i expected to see something crazy in this thread... but guess not haha

### Reply 1:
You have a motherboard with 18 pci express slots?

### Reply 2:
This is normal ATI does this to support multiple displays for each card, what os are you on? What's not working?

### Reply 3:
Cool! fire up the miners! LOL

### Reply 4:
The ATI divers dO not support more than 8 GPU's per machine

### Reply 5:
Yep. Though he did not claim to run that many (he said it's a display bug), ATI/AMD does not support this.Nvidia does support ~16 gpus for parallel processing tasks like SETI@homebut even then you need 8 dual gpus (& nobody mines bitcoins on nvidia cards seriously), and there is maybe 1 motherboard that even has that many pci-e slots (MSI BB Marshal)

### Reply 6:
It's not 18 GPUs. You're seeing multiple entries for the same card. I noticed the same thing. On my rig with 4 cards there were 12 ""ATI 6900 Series blah blah blah)"" when you right clicked the ati system tray icon. I'm not sure why CCC does this and what the multiple entries actually do, but it's not actual GPUs.

### Reply 7:
same here, i think it sees something like 13 displays...I have 4 cards in the system, 3 dual gpu and one single,so 7 in total, but for some reason the machine can only use 5 to mine. Weird stuff too. I start mining with 4 then start on the 5th gpu, and some of the other hashrates on the other cards go down to about 90 or something weird like that. when i run linuxcoin all goes well, but really want to be using win 7. win xp 64 gives similar problems.

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    ""hardware_name"": ""motherboard with 18 pci express slots"",
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    ""hardware_name"": ""4 cards rig"",
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    ""hardware_name"": ""3 dual gpu cards"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""1 single gpu card"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Linuxcoin"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Windows 7"",
    ""hardware_is_owned"": false
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14784,"Date: 2013-09
Topic: Guy on Triplemining pulling 520 GH/s
### Original post:
Great! But let's put one more line in the page...Oh... it's me! in 10th position.

### Reply 1:
There is a person on BTCGUILD with over 7.6 T\hash!

### Reply 2:
Well if he has money to invest, why not.

### Reply 3:
Wish it was me,

### Reply 4:
Early bird can do very imaginary while i am still waiting for as there are many bad things which must be solved before further actions.

### Reply 5:
good they need it. I moved away from triple mining after seeing only 2 blocks mined in 1 month

### Reply 6:
Wanna know how much did the 1st place guy got from there ?

### Reply 7:
Leader right now is 23TH. 26104323,100.05 GH/s

### Reply 8:
This is very interesting, why of all the places would he go to triplemining?

### Reply 9:
one possibilty - he has a much larger hashing farm and is mining across multiple pools to reduce variance - Meni Rosenfeld wrote a thread about it a while ago

### Reply 10:
Hmm well that is quite possible. I mean, if I had more I wouldn't put it all into 1 pool either.

### Reply 11:
DAS MANY 7970's MY PRETTY!

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15279,"Date: 2014-08
Topic: Mining Community And CryptoCause Come Together To Help A Fellow Miner
### Original post:
HI EveryoneDr Paul is a fellow miner and posted a moving statement asking for help on HashTalk.The community has responded with a <link> fundraiser that is selling miners at a discount to help him out.If any of you are looking for miners or just want to help him out please do. Here is also the article with more info.<link>

### Reply 1:
Hope the buddy could back to healthy quick, God bless him.

### Reply 2:
Me too.

","[
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18672,"Date: 2014-02
Topic: ASICMiner Block Erupter Cube Network Issues
### Original post:
It's possible that the network doesn't allow peer-to-peer traffic in the dorms.Find a compsci friend, buy him/her beer. Explain what you're trying to do. Explain that the cube is a static IP. They may tell you that it's all firewalled, or may have a tip or two.In theory, you can get around it with two NICs. Leave your PC connected as-is on NIC#1. Set the cube network up NIC#2 static LAN. Configure the proxy to listen for getwork on NIC#2. Crossover cable may be required.Cube -> PC/Proxy -> Network

### Reply 1:
This is what I did, the mining rig server uses wifi for WAN. The NIC connects to(LAN) a switch on the same subnet the cubes are on.Also if you run one proxy per two cubes and run proxy command with -q switch for quiet, you will get fastest productivity.

### Reply 2:
That worked! I talked it over with a MIS major and he told me pretty much the same thing. A jargon-filled chat here, a greased palm there, and now my Cube is pumping 36-38 GH/s! I barely understood what he was saying, but it had something to do with a static LAN and network cards.Thank you so much! Now I've got a passive income while I work on my studies! Thanks again!

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7847,"Date: 2014-06
Topic: Replacement ASICMiner 4-pin power green screw-down terminals
### Original post:
So I had bought a couple original design ASICMiner Blades that didn't come with the green power connector. Fortunately I was able to solder up my own connections but they are a bit fragile. Would like to return to the more robust screw connector. Just need the part that plugs into the existing green PCB power connector with the screw down terminals.Found this:<link> if that would work, though the ""sides"" of the connector on the blades are closed not open like the one on eBay so it makes me <truncated> anyone?

### Reply 1:
They look exactly like the connectors that come with the blades. But don't quote me on it.

### Reply 2:
Those are ""2EDG"" connectors.I bought a bunch of the 3-pin type for my Ztex boards from Kesun Electronics on aliexpress.<link> ones in the ebay listing above would probably also work. They look the same, and specify the same 5.08mm pin spacing.

### Reply 3:
Worse comes to worse, you can safely trim the receptacle plug with a pair of wire cutters if you have any clearance issues. But they should work fine as-is.

### Reply 4:
Necro bumping this to say thanks. I burned a couple terminals because I screwed up on how you insert the wire into the terminal (dont ask me how). Also led me to finding replacement terminal blocks for the backplane. I hope I get them soon, so I can sell them as a ready-to-go kit.

### Reply 5:
If you don't pay attention its possible to put the wire between the metal and plastic rather than metal metal, causing the plastic to obviously burn. Its a bit of a flaw in design [room for user error], but hey, they cost nothing to make.

### Reply 6:
Just thought I'd mention it for anyone looking in the future, you can MAKE the 4-pin power connectors work off of standard PC power supplies. Note that you'll still need to change the wiring to get 12V and Ground to the correct pins, but this does work.Picture on my blog:<link>

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3839,"Date: 2015-03
Topic: Checking interest in bulk antminer order group buy hosted units & resale.
### Original post:
Reserved an forgive me for any typos this was typed in mobile.

",[]
12974,"Date: 2014-03
Topic: Looking for a brower based miner to implement
### Original post:
Dear Community,for my new website project i need some help, I hope you can help me.I am looking for a bitcoin miner, that I can directly put on my website, so Users can switch from the website with ads to the one with the miner.I've already found a couple solutions for browser based bitcoin miners, but none of them seemed to work for me. The first thing I came across was <truncated> It seems to be a pretty good thing, it even has an implement code. The only problem is, that the source code is not verified and I don't want to force my website users to change their Java Settings to Superlow. So sadly I can't use that.The second thing I found was this: <link> Even though I used Adobe Flash to take a look into the swf file, I couldn't find the right place to insert my hostadress and username etc. Does anyone of you used this before and can help me with that? That would be awesome.Or does anyone have experiences with a bitcoin miner on a website and maybe have another solution?Thanks a lot,Bela0

### Reply 1:
You are probably wasting your time but I will give you this link: <link>

### Reply 2:
Okay, thank you for the fast reply. Have you ever used it?I fount the options in the jsMiner Script. I'm not quite sure what I have to insert there. Can you help me?It is asking for a publisherID and a siteID.

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21016,"Date: 2016-04
Topic: antminer u3 on mac
### Original post:
Hey there. I am new to bitcoin mining and just doing it for a bit of fun and to learn. I have an antimatter u3 running my mac with no problems for last couple days. The hash rate is 37.23 Gh/s average for that length of time. I was hoping someone can tell me how to clock it or make it run faster. I am aware i have to change a command but not sure how to do it on a mac. Looking forward to some info. Thanks

### Reply 1:
Can you tell us more about your setup? Mac is one system I have not used U3 on. I have done Windows and Linux. I would assume your using cgminer and varibles are the same to change.Long term I suggest getting a R1 and using CrazyGuy's custom firmware.

### Reply 2:
Where can we get the custom firmware from? is there a github repository?

### Reply 3:
Yeah, i am using cgminer 4.9.2. and the miner is running off an ATX PSU on 6 pin pic-e cable. OS X Yosemite 10.10.5 I just plugged in and connected to server and it started mining so it must be standard settings. When it is mining the is a terminal window on the task bar of mac and when you right click it there is an option "" new command "" tho any commands i have got from forums that people claim to over clock do not work unless i am typing them wrong. Apart from that it is mining away with no problems atm.

### Reply 4:
try this buddy fill in you pool deatails tho cgminer.exe --bmsc-options 115200:1 -o <truncated> -u username -p password --bmsc-freq 0C82 --bmsc-voltage 0800also the values you can change them to are in the userguide <link>

### Reply 5:
It's in the R1 thread in hardware. CrazyGuy released it public after he sold first batch (was awsome of him). With it the R1 can reset zombie's which is great for those who use multiple. Also you have bitmain GUI that is super easy to use.I have used it with 3 U3's at one time and it worked great. Also with it being a R1 it's a pretty low power controller, so save money over time.

### Reply 6:
I tried that command here with my username and password and pool details <link> i hit run this is what comes up. <link> them links worked

### Reply 7:
sorry try with this or try to find the command to start cgminer in whatever os ur using as he one i posted was for windows try it without the .exe cgminer --bmsc-options 115200:1 -o <truncated> -u username -p password --bmsc-freq 0C82 --bmsc-voltage 0800

### Reply 8:
Hey sorry, I tried that but nothing happens. just that same window as before. Not sure how to find the command to start cgminer. Might consider getting a raspberry pi to run it on. Thanks

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13640,"Date: 2020-01
Topic: Easy manage your miners remotely when miners are in LAN
### Original post:
My friend is developing a very good software that can make people manage their miners remotely very easy.Such as when people host the miners in the farm(LAN), they can still access the miners directly from internet, the same as in the the LAN.We have installed the software in S9, this S9 is in our office. We only run the S9 control board to lower the noise and power cost.Here is the ULR for the miner, you can access it. the use name and password is ""root"", ""root"".<link>

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7747,"Date: 2014-05
Topic: nil
### Original post:
[removed]

### Reply 1:
[removed]

",[]
23742,"Date: 2021-11
Topic: 240V Antminer Dryer outlet help!
### Original post:
Hi All,I am new to the forum. Thank you guys all of the help and support on the forum so far.I just recently purchased a Antminer S19j Pro 100T and I want to run it on an existing dryer outlet. I believe I have a NEMA 14-50 outlet. Would something like a NEMA 14-50P RV/Range/Plug to (4) NEMA 5-15/20R 20Amp,1.5FT,Dryer Male Plug Household Adapter Power Cord,RV Distribution Adapter Cord work to run this machine? Is it possible for it to run two antminers on this adapter if I purchase another antminer in the future? The cables that came with the Antminer are 5-20P to C13.My math so far. Nema 14-50 is a 50 amp plug and each antminer S19j Pro requires 20 amps (10 amps from each cable) thus if I plug in 2 machines using this NEMA 14-50 to 5-20R adapter, I can power 2 machines 40 amps total with 20% buffer.Thank you all for your help. Not sure if I am allowed but here is the amazon link to the product in question: <link>

### Reply 1:
Hello! This adapter is probably not going to work for you. The S19 series loves 240V source voltage. This adapter will give you 120V at each cable outlet which will likely max out the current rating on the cables going to the miner. The other thing is technically a code limitation in Canada at least NEC is similar I believe. Plugs cannot be fed with a breaker bigger than their rating. So the 50A breaker feeding the adapter with 20A plugs would be too large. If a cable shorts plugged into the adapter it could burn up because the breaker feeding the adapter will allow a higher short circuit current. If you want to adapt down from a 50A plug, as an electrician, I would recommend using a small sub panel with a couple 2-pole breakers feeding each miner. I know thats a bit more work and cost but its a lot safer and will help keep everything safe reducing risk of fire. What I did for my setup was run a wire from a 2-pole 20A breaker in my panel to a junction box. I cut off the male cord ends for the miner cables and entered those cables into the box. Then spliced those wiresonto the wires from the breaker. Avoids the plug code limitations and also makes the miner easier to turn on and off<rest of post truncated>

### Reply 2:
Just because your plug is 50A rated, doesn't mean the circuit actually is, so check that first, and its breaker.Then, you need an adapter to provide two plugs. Your source of power is the two prongs on the sides, nothing else. Of course the (round) ground prong is nice to use, but ignore the 120v flat prong in the middle.I'm not sure about that specific adapter, assuming its providing two 240v and two 120v (red/green dot ?), just use the two 240v.BTW: 3250W/240V=13.54A therefore it would be 14ish each not 20, so both would be 28A, but don't add a third one because you have to keep the 20% safety margin always, and 80% of 50A is 40A so assuming a 50A circuit (again, check), then up to a 40A load you are good.Well yeah, its even better to protect each plug individually, or separate the circuits to begin with...

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969,"Date: 2013-07
Topic: [OPEN] KnCMiner Jupiter Shares 1.1BTC=5GH/s! 4 SOLD | 45 shares left
### Original post:
1.2 BTC sent. adding 1 share, and including the additional 0.1 for my existing share.What happens in the morning the the price of BTC crashes to $80?

### Reply 1:
<truncated>

","[
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    ""hardware_name"": ""KnCMiner Jupiter"",
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7580,"Date: 2014-05
Topic: The Bitcoin roadmap is littered with companies' and ideas' corpses
### Original post:
And that's talking only about mining hardware manufacturers.

",[]
5222,"Date: 2013-06
Topic: Low Watt Miners -GH/BTC -ROI with difficulty [Updated June 5]
### Original post:
Ive just got a new quote for the pcb'smy thread has updated, please update the op here

### Reply 1:
Hi FCTaiChiI see that you have me listed as group buy for avalon chips in your OP. However, we are now also offering a full miner assembly service base on the k16 design.It would be nice if you could also include it in your table (<link> offer the following:k16 based design miner assembly4 layers' PCBElectronic componentsHeat SinkFull assembly Chips are not includedThe price for the above service is 60EUR when the chips are bought using our group buy. The price of each chip is currently 0.082BTC.If the chips are sent from another group buy the price for the miner assembly service is then 65EURMiner assembling is based in Spain.Thank you in advance.

","[
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    ""hardware_name"": ""avalon chips"",
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    ""hardware_name"": ""k16 based design miner"",
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    ""hardware_name"": ""Full assembly Chips"",
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921,"Date: 2013-07
Topic: [Group Buy] BFL 4 GH/s Chips - .85 btc per chip: 2988 available (512 sold)
### Original post:
price per chips has been updated to .85 to reflect current btc/usd rate.

### Reply 1:
Bfl released jalapeno schematics, at worst, we can make a bunch of jalapenos.

### Reply 2:
Canary,Did they send you sample chips yet?

### Reply 3:
Jalapenos are fine anything that can be used to mine

### Reply 4:
Any links to see itBfl released jalapeno schematics, at worst, we can make a bunch of jalapenos.

### Reply 5:
I have requested 70 sample chips already.

### Reply 6:
Thats good news.Josh stated that you can receive 2 chips per 100 orderThis way we can have a working unit before we receive the chips and you guys can work out all the details.

### Reply 7:
that's the plan!

### Reply 8:
Has anyone started any significant work on a BFL chip project?

### Reply 9:
Out of curiosity how did you do it? Mail? Do you have any direct phone number? I can't get replay from them even after ordering 200 chips...

### Reply 10:
This just in from Josh:Anthony is not longer with us, which is why the sample chips have languished. I just corrected this problem today and we have a new person on it... he should be getting the sample chips taken care of over the next couple days.<link>

### Reply 11:
Thanks for sharing!!! this may explain why I haven't heard anything since my request...

### Reply 12:
I emailed sales

### Reply 13:
Lucko, have you got your sample chips yet? If not pm me for contact info.

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17749,"Date: 2013-06
Topic: Power Limitation
### Original post:
Hello,I don't have much of a EE background and did CSC in college so the power portion of creating a mining pool is confusing me.I currently have one rig that takes ~1200W running in my room. I've noticed many times the surge protector will shut that machine down. It used to trip the circuit breaker, but luckily that doesn't happen anymore as the strip stops it. I'm not sure how or why the strip goes off, but it seems to have fixed my circuit breaker from tripping.I'd like to buy two or four more of these machines, but can't figure out how to tell/test if my current power can support it. Naturally I'd want to put it on another circuit because the current one wouldn't handle it ( how can I tell? ). How do you guys figure out if your current home can support the added power load before buying a new rig?Thanks for your time

### Reply 1:
If your tripping breakers with 10A something is wrong. Either the machine is drawing allot more than it should or you have allot of other stuff on that circuit.

### Reply 2:
Your second guess it correct. I occasionally have another computer I use on the circuit along with a saltwater tank.Do you know how to turn that into values? Could I put four ~1200W systems on a 10A breaker? Is a 10A breaker the standard for homes? I'm curious as to the numbers your using to draw this conclusion.

### Reply 3:
A standard 3 prong plug, in the United States that is, should be 15 Amps. If one of the vertical blades also has a horizontal as well then it should be 20 Amps.Your Circuit Breakers should have the current value on them so you can see at what level they trip.I would put a 1200 Watt machine on it's own 15 Amp Circuit with nothing else. If you have 20 Amp circuits then your 1200 Watt machine with a standard machine will probably be fine. But always be conservative on your allowances.Your salt water tank pump, heater, lights and whatever else you have with it can take allot of current so I would do some research on how much that setup is taking too.

### Reply 4:
how did you decide a 1200W machine is fine on a 15A circuit?These new machine I'd like to go on a different circuit, but I'm curious if I could get two on one breaker.

### Reply 5:
Absolutely not. Each 1200 Watt system consumes 10Amps. <truncated> so 1200W/120V=10A. I would use on system per 15Amp Circuit.15Amp is usually standard, per my previous post. Check your breaker box to verify what the breakers are and try to figure out what all is on each circuit.Sam

### Reply 6:
<truncated> so 1200W/120V=10A.If you had 20Amp circuits, and you probably don't, I wouldn't recommend putting two systems on one of those as it would max it out. Also it may be worth your while to get a power meter so that you can measure your actual power usage with the system under max load. It may be less than 1200W.Sam

### Reply 7:
If you are in NA, buy<link> something similar and measure how much power does your current system draw from the wall. If you are around 750-800W/machine, you should be able to run two of these systems on one dedicated 15A circuit. Most breakers disconnect at 1600W+ if run for some time. You have to find out what else is connected to that circuit and estimate the extra power consumption of the other stuff.I split up 60A (6 gauge wire) secondary panel into 4x15A dedicated outlets, each with double pole 15A breaker feeding (with 14-3 wire) one outlet (broke the tab to run two hots to the panel).

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14435,"Date: 2011-08
Topic: 6870 often gets stuck in some kind of low speed mode
### Original post:
I own a gaming PC that I some times use for bitcoin mining. The system runs Win 7 and has 2x6870s installed in it. Typical hashrate with stock settings is about 260 MH/s, running poclbm with the -v flag set. My problem is that some times (quite often actually) the first device, GPU 0, drops to about 70-80MH/s and gets stuck there. It always happens when I open a youtube video, but can probably be set off by other things as well. Once it enters this mode it stays there until I reboot the system. Any of you GPU pros have a workaround for this? Any way to manually force it back into its normal operating speed?

### Reply 1:
You didn't mention it so I will, heat. I only experience this when the card throttles down to prevent overheating. So more fans, PCI express extender cable, and so on can all help. If you don't already, use MSI Afterburner on Win7 to monitor temps <truncated> etc.

### Reply 2:
Are you using guiminer?If so add the -f 1-10 flag. Somebody told me to use -f # where # is any number less than 30. 30 is the default. I did this and it fixed this issue w\ my 6870.

### Reply 3:
The flash acceleration is likely the big issue there.You can also look into disabling Ultra Low Power Settings.<link> MSI Afterburner and TriXX have the settings to do this.In afterburner set voltage to be constant, in trixx turn off ULPS.

### Reply 4:
Thanks for the quick replies guys. After trying some of your ideas I think I have been able to fix the issue for now.I'm pretty sure it isnt heat. This morning I had this issue just seconds after turning on my computer. When I have heat issues it typically just locks up my whole system. I have ordered extra fans to keep things cool, but for now I'm just running the cards at stock gpu frequencies, 100% fan speed and the memory clocked down as far as afterburner lets me (525), and this appears to be running stable. Just for reference, how high can the GPU temps go before I should start getting worried?Hardware acceleration for flash was turned on. I have now turned it off, and it seems like my system can play youtube videos without having the performance drop. I guess this will eliminate the most common cause of this problem. The only thing that worries me is that while the hardware acceleration probably caused the drop in performance, something else must have caused it to get stuck there. I am not using guiminer, but I guess its some kind of front end for poclbm? I'll try experimenting a bit with the -f 1-10 options and see if they make any difference. What exactly are those flags f<rest of post truncated>

### Reply 5:
The -f tag is for setting process priority, setting that to 1 gave the mining process ultimate authority so that is why you experienced unresponsiveness.30 is the default.As for guiminer, it is just a front-end, though pretty useful and doesn't drag on resources.Temps are a toss up, I personally make sure my card never rises above 55C even when over-clocking, though other more adventurous types let it go to 70C even 90C... which IMHO is ridiculous, within a year those cards will likely be nothing more than burnt bricks.Technically most chips are rated to 100C as max, though often artifacts and errors occur much sooner.Think of it this way... at 50C 24/7 you could get 1.5-2 years on average... now half that for 90C. This is of course dramatization, but I'd rather be safe than sorry.You don't need water cooling to get low temps, just good airflow and proper fan positioning.

### Reply 6:
If you have a way to get 2 x 6990 to run at 50C while doing dedicated mining, would love to hear ideas and pics! Mine with tons of fans are stable at 85C. Those sucker throw off tons of heat too. My 6950s are running at 75C or so.

### Reply 7:
I have two 5830's and a 5770 running at around 55C each, dedicated on air.Make sure you have as much ""in force"" as ""out force"" in the case, sometimes people place a bunch of fans inward... with no exhaust, or they place fans too close to eachother with opposing air currents.Remember that heat rises.. so if you have cards that vent out the rear, hang the machine at a 90deg angle with some bungee cords, or a wire rack. Laying it on the side may help as well. Sometimes keeping the machine out of a case helps, but alot of heat dispesal requires alot of air actually passing though the fins of the heatsink, not just above them.Ambient temps factor in as well, gotta have a cool room.Though you may just be out of luck with two 6990's, 4 GPU's in a cramped space are going to make tons of heat and there isn't much outside of watercooling that can help.

### Reply 8:
Firstly I would check your temps and make sure they are not too hot causing your card to throttle down.Secondly I would disable hardware acceleration for flash player, (right click any flash video -> settings & un-tick enable hardware acceleration)

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11562,"Date: 2011-07
Topic: GPU Mining on OS X Lion (10.7)
### Original post:
Update: I tried running the old (non-phatk) poclbm with -f 100 and it has been running for the last 30+ minutes without any rejected shares. So, possibly the default poclbm in that version is just too agressive and that was causing some corruption?On a side, note, my workstation's HD 5870 is now getting about 285 MH/s (with -f 100) under Lion vs about 192 MH/s (with -f 10) under Snow Leopard. Still not quite what that card would get under Linux, but much improved. Given that this workstation has a day job, I am trilled to get almost 50% more hashing out of it while it is idle (this workstation only mines when the screensaver is on).Edit: and right after I posted this, I got 4 corrupt shares in a row. Well, I'll keep an eye on it and see how frequent they are and possibly will try an even higher -f setting.

### Reply 1:
These are the miners I found to work:* old poclbm (pre-phatk, using -f 100 or higher)* cgminer v1.3.1 (using -v 1 and either dynamic intensity or intensity <= 6)* current phoenix (using poclbm kernel with no kernel params)Miners that don't work:* current poclbm* current DiabloMiner* cgminer v1.4.0

### Reply 2:
It may be hardware specific then. I have a Mac Pro with an HD 5870. In Snow Leopard the symptom was that DiabloMiner showed me getting something like 1000 GH/s (which is impossible) and never actually found shares. D3Diablo I think posted that the problem was that the new kernel was crashing in OpenCL but that Apple wasn't reporting errors so it looked like it was just succeeding very fast. He didn't indicate any desire to workaround or fix the issue it because it is ""Apple's Problem"".In Lion, I initially got an error about work size being incorrect (see my post in the DiabloMiner thread), but that was worked around by forcing worksize of 64. I still get the B.S. hashrate though.I happen to have saved off a very old version of DiabloMiner and it works in Lion (it's before he made the kernel optimizations that are broken with the HD 5870), but it gives a lot of messages about hardware errors.Note, even in Snow Leopard, no miners that use a phatk-like kernel worked with my HD 5870 and they still don't work in Lion (which is why the most recent poclbm doesn't work). So I don't think this is a Lion issue specifically.As far as I can tell, the only Lion specific issue at this point is t<rest of post truncated>

### Reply 3:
All of my observations are from a Mac Pro with an ATI HD 5870. Some people have reported that they have none of the problems I am seeing when using miners on iMacs with ATI mobile video cards, so your milage may varyI have tried several miners and not had success with any:Current version of DiabloMiner won't start. Note, the current version of DiabloMiner didn't work with Snow Leopard either, but had different symptoms.Current version of poclbm uses the phatk kernel which still seems to not work (status shows incredibly high hashrates for a single GPU which likely means it is erroring out instead of finding real hashes). The current version of poclbm didn't work with SL either.I tried an old version of poclbm (before the switch to phatk) that had worked well on SL, but on Lion, it generates mostly invalid/stale shares (> 80%). Unsure what is causing those.So, has anyone had any success GPU mining on Lion, with its new version of OpenCL? If so, what software and setup did you use?

### Reply 4:
Did you notice an increase in hashrate between Snow Leopard and Lion?

### Reply 5:
I've been getting similar problems. After going up to lion and reinstalling pyopencl, any time I try to run POCLBM (old version) I get this as an <truncated> <user>$ python poclbm.py -d 0 --user <ID> --pass <pass> <truncated> -w 32Exception in thread Thread-2:Traceback (most recent call last): File <truncated> line 530, in __bootstrap_inner self.run() File <truncated> line 483, in run <truncated> **self.__kwargs) File <truncated> line 306, in miningThread output_buf) File <truncated> line 240, in kernel_call global_offset, wait_for, <truncated> <truncated> failed: invalid work group sizeThis never happened in SnowLeopard (10.6).

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14255,"Date: 2011-06
Topic: speed on 6990, windows 7 64
### Original post:
I get 284 Mhash/s with poclbm -W 128299 Mhash/s with poclbm -v -w 128284 Mhash/s with poclbm -w 64298 Mhash/s with poclbm -v -w 64254 Mhash/s with phoenix VECTORS AGGRESSION=11 BFI_INT FASTOOP=falseThis is on 6990, for one GPU, 11.5 drivers, sdk 2.4, windows 7 64 bit. One cpu core is maxed out.Should I be expecting more mhashes on this card?

### Reply 1:
you have to manually switch it to profile 1 overclock to get 750Mhash/s.

### Reply 2:
I can't believe people are buying the 6990 and don't even know about the switch. Way to seriously jump in w/o thinking.

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12158,"Date: 2013-02
Topic: Need help optimizing 5970 and 5780 rigs, back from retirement
### Original post:
Howdy! Back from my sabbatical need some help making sure my mining rigs are up the snuff. Got the latest cgminer 2.10.5 with intensity at 9. The 5970s are yielding ~700MHs and they are finicky when it comes to clocking up GPU and clocking down memory.The 5780 is yielding ~370 at stock settings. Any recommendations in terms of latest stable Catalyst drivers, improved cgminer settings or GPU and Memory tweaks would be appreciated!Thank you all in advance!

### Reply 1:
I was able to achieve 800Mh/s with 5970 using BAMTCores overclocked, memory underclocked, max intensity.

### Reply 2:
Go through harware section, look for 5970, there is a guy with detailed setup and power consumption for each.

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10680,"Date: 2017-11
Topic: Power Supply and efficiency
### Original post:
In various posts, articles, etc I am led to believe(but can't find anything definitive) that plugging your power supplies into 208/240 circuit results in a more efficient power supply and better hash rate(albeit marginal as best I can infer). The efficiency I can believe, but I am not sold on better hash rate.Is this true? Should I invest in the 240V surge protector and cable(s)? Just curious...Setup: I have two EVGA Super Nova G2 gold PSUs running an Avalon miner - both support 240 - and I have a 240 outlet right beside it.

### Reply 1:
Hash rate does not and cannot change when using 220v vs 110v. Assuming the PSU works correctly, it still only puts out 12vdc and that is all the miner sees. Same DC voltage = same DC current = same operation of miner. Assuming the PSU works with either 110v or 220v and feeding in 220v the wall plug eff is slightly higher but not enough to matter - at best only 0.5% difference.

### Reply 2:
Any recommendation that also does not say why with numbers is often a myth or scam.If using a 240 volt power source, then all cables must already be rated for that voltage.What does a protector do? Protector can make damage easier if located adjacent to a miner. Protectors that are effective never do protection. Those proven devices only connect a surge to something completely different that does protection - single point earth ground. Protection is where hundreds of thousands of joules are harmlessly absorbed.Best protector for all 120 and 240 volt appliances is located at a service entrance with a low impedance (ie less than 10 foot) connection to earth. If even one miner needs that protection, then everything in a house needs that protection. With numbers that even define protection from direct lightning strikes. A protector is only as effective as its earth ground (which obviously is not a wall receptacle safety ground). And typically costs about $1 per protected appliance.

### Reply 3:
Here is a good article to look at when deciding what power supply and power outlet to use.<link> found it a quite informative read and you just might too.Hope this help you in your question you posed here.

### Reply 4:
240 / 220 is almost always slightly more efficient, since you're drawing less current (which means less resistive losses in the wiring). Although this effect is minuscule. It's also far easier and cheaper to get PSUs that deliver the load with 240.It is technically possible that your PSU can change your mining rate - if you're overclocking and have one of the really old S7s. Apart from that, unless the PSU gets wobbly (way less than 12v output), there's no difference to hash rates.

### Reply 5:
It's hard to understand when you do not understand, thanks, I will continue to delve into

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15523,"Date: 2015-05
Topic: Can someone confirm my transactions {REWARD}
### Original post:
Well, I didn't think the 'frugal' option on Blockchain meant *0* fees and now I'm stuck with 3 unconfirmed transactions after a few hours. Can someone confirm these transactions for me? I will pay for you to confirm these. Please message me.Also, I've learned my lesson and changed my setting to regular. The frugal option is a disaster.

### Reply 1:
Hum Im wondering how can someone confirm it for you ?? Someone need to have enough power to solve a block with your transactions in it ??

### Reply 2:
See here:<link>

",[]
15538,"Date: 2015-06
Topic: How does the getblocktemplate request rate correlate with a miner's hashrate?
### Original post:
What is the relationship between a miner's hashrate and the getblocktemplate (GBT) request rate?(The question ""How does the rate of getwork requests correlate with the hashrate of a miner?"" discusses getwork, but that's outdated.)(cf. the related Bitcoin StackExchange question)

### Reply 1:
It makes absolutely no difference to the hashrate since work generation is done on the miner. The frequency of getblocktemplate requests correlates with the amount of transactions you are likely to include from the current set of transactions. The more frequently you do it, the more transactions on average you will have. It is the pool/pool software that determines the frequency of GBT requests. Stratum stipulates updates should occur every minute and usually the pool software will have an updated set of transactions along with each stratum update, but there is nothing stopping the pool from just sending the old set of transactions every minute. Most pools send out a new set of transactions every minute; p2pool does not, usually waiting longer, and ckpool defaults to doing it every 30 seconds which is why the ckpool instances out there have more transactions on average (it also NEVER generates transaction free work templates).

",[]
11080,"Date: 2022-01
Topic:  in short, is investing in used hardware worth it for mining?
### Original post:
Glad to reply to you! High-quality second-hand equipment is very cost-effective, but buying second-hand equipment requires professional vision, and it is best to test the equipment on the spot.

",[]
17083,"Date: 2012-03
Topic: Problem: ubuntu 11.10 cgminer latest
### Original post:
and when I want to use bamt 0.5c the after the startscreen nothing is shown??

### Reply 1:
hi,sorry i have searched the forum but not found it. I have a rig with various cards (5870, 2x5850, 5970). Just installed with the guide from cgminer. When I want to mine only with 1 gpu all is okay, if I wnt to do it with all my hasrate is about 350mh/s overall cards?? I could not find what's wrong. SDK 2.4AMD 11.8 (fglrx)Sempron 140MSI 890FXA-GD702 gb ramusb stick with 11.10cgminer 2.3.1-2Thank you for your help or link to the discussion I have not found.

### Reply 2:
Did you run?sudo aticonfig --adapter=all --initial

### Reply 3:
try using 11.04 instead.

### Reply 4:
yes I have run. And why should I use 11.04?Is there no one with more ideas?

### Reply 5:
export of display was done before. No one else with such a problem, and why is bamt not running?

### Reply 6:
run it again after you added (or removed) a card, then reboot, then try again. You may also try with -fsudo aticonfig --adapter=all --initial -f

### Reply 7:
so I have tested all, but it is all time the same.Now I see the cpu (Sempron 140) is at 100% while mining. Is this the bottleneck?

### Reply 8:
You got AMD 11.8 (fglrx)Why don't you install 11.6?

### Reply 9:
Oh, so all cards do show up in cgminer? Then yes, you could be running in to the infamous cpu % bug. Try this:export <truncated> run cgminer. If that doesnt work, is there a reason you arent using BAMT?

### Reply 10:
thx I will try. I want to use bamt like described, but it don't startup. After the choice screen (stat, fal, ...) my screen is blank and nothing is going on.export <truncated> don't worknow I'm downloading 11.12bye

### Reply 11:
Driver versions 11.7 to 11.10 on linux have high CPU usage of their own. Use either 11.6 or 11.11+ but be aware of the performance loss that comes with upgrading to a 12.x driver and the new SDK that comes with it.

### Reply 12:
You can sort of cancel out that loss by using the diablo kernel in cgminer, at least it worked for me with 12.2 in lubuntu 11.10.

### Reply 13:
hi,thx for help i will test it with 11.6 again, 11.12 shot my ubuntu, so i try a new one :-).

### Reply 14:
I don't think 11.6 works with Ubuntu 11.10. Something about the kernel being bumped to version 3 makes 11.6 not install properly.

### Reply 15:
thx at all, after bamt won't mine and 11.10 make some extratrouble i use now ubuntu 11.04+fglrx 11.6+ sdk 2.4+ cgminer 2.3.1 and all is running (except the 5970 i have to test the card in another pc)

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17941,"Date: 2013-08
Topic: Cointerra seeking experienced Web Developer based in Austin
### Original post:
Cointerra is seeking highly experienced web developer(s) based in Austin, TX.

",[]
21582,"Date: 2017-09
Topic: Joining flex duct together
### Original post:
I was going through the cooling threads and most people are using the ~10"" flex duct for miners. I was thinking I may have ~10 x 10"" flex ducts dump into a bigger metal duct (24""?) that would run about 10' to a window with a 3500 CFM window fan. I wasn't sure if anyone had joined together the 10"" ducts or whether people just run all 10 separately to a window?My garage is setup like <truncated> --miner shelf-- | | || window -- fan (3500 cfm exhaust)| || || window -- fan (3500 cfm intake)| ||______garage door closed_____|Temps are about 85F with all my mining gear going full blast (without the ducting) and outside ambient temp is about ~65 F... Goal is to get temps down below 80F

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16410,"Date: 2023-01
Topic: What are the top Bitcoin miners right now
### Original post:
Guys I have a S9K asic miner that I want to sell because it's not profitable anymore for me but I am curious since this is a sha256 rig is there anything else I can use this asic miner for? Also I want to upgrade to a better asic miner and I have up to 14,000$ to spare.I will also like to know which Asic miner is the most profitable right now because I can't find any, Antminer S19 XP with 255TH is the highest I can find and this earn 4.7$ per day, is there any Bitcoin asic miner that do better than this?

### Reply 1:
You only can use it to mine other coin which also use SHA-256. But obviously potential money you could earn isn't that different compared with mining Bitcoin. You can use tool such as <link> to check that, but take note it exclude few thing (such as exchange fee).Antminer claim ""S19 XP Hyd."" have slightly better energy efficiency than ""S19 XP"". To be precise, it's 20.8J/T[1] versus 21.5J/T[2].[1] <link> <link>

### Reply 2:
ETFbitcoin you are right, the Asic money I want to purchased has a Hyd name attached to the complete name, I don't know the difference between the normal s19 and this Hyd but thanks for telling the difference, actually energy consumption wise is not a problem for because I don't rely on the grid power completely, I also use solar panels just like some people on here so the only time I will be using grid power is in the night when there is no more sunshine.

### Reply 3:
Well considering many of those are very old, only available second hand, and would run at a loss for most people, I crossed off a number of them.I deleted the last one since they are not even Bitcoin miners.Anyone selling you the ones crossed off, is probably thinking you are a fool and you are willing to buy anything with the word Bitcoin on it.

### Reply 4:
You are very true, old systems never make any money with Bitcoin. I tried in local forums for buying Antminer, but on calculation their is no profit for me.What to mine showed me loss a year back. I think the OP later can have profit if the BTC price moves up else mining is worse for most countries.

### Reply 5:
The difference is that the hydro does not have the large cooling fans. Running at full speed each fan can easily draw 50-75w. That said, the hydro *does* need to use circulating pumps and fan cooled radiator(s) which are not part of the efficiency spec. When running just 1 or 2 of the miners it's a safe bet that after adding in the power for cooling system will it be nearly the same...

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  {
    ""hardware_name"": ""S9K asic miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S19 XP"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 XP Hyd."",
    ""hardware_is_owned"": false
  }
]"
5464,"Date: 2013-06
Topic: EasyMiner - new version with Auto speed tuning
### Original post:
I'm downloading the auto-tune package now, but the easyminer link still appears to be dead.

### Reply 1:
Checking.... OK, fixed.

### Reply 2:
EasyMiner version 1.2 Beta is now up on the site's driver download page.<link> best new feature is Auto-Tune which finds the optimal firmware speed for each individual unit. If you don't already know, every BitForce Single has it's individual variance in performance capability relative to heat. This is the natural result of our using full wafer chips. The nominal performance is 832 mh/s at 72F, but will range + - 10% from there. Some can even run much faster. The temperature of the air it's operating in makes a BIG difference. Using EasyMiner to make sure your units are getting the best performance in any given temperature situation should help you get the most out of your units without hours of manual observation testing individual firmwares.You'll need the latest version of EasyMiner and the Auto Tune firmware package which is also on the site's driver download page.To use Auto Tune, right click on the unit(s) you'd like tuned and choose 'Auto Tune' from the menu. It'll ask you to point it to the auto tune package file we've provided. EasyMiner will take care of the rest.Regards,BFLPS. Try auto-tuning your units at different room temperatures and you'll see a difference in perfor<rest of post truncated>

### Reply 3:
Confirmed working. Some are taking longer to process than others, but so far so good. The one that finished auto tuned at 896Mh. Does the auto tune automatically install the firmware or must I o it manually? Thanks!

### Reply 4:
EasyMiner takes care of all the details for you. After tuning, it's ready to unplug and go. Nothing more is required.

### Reply 5:
Trying it out now as well. Thanks.

### Reply 6:
Note to mini rig owners... EasyMiner auto-tune works on the cards in the rigs as well. They aren't as heat sensitive, but we don't ship them fully optimized and you may find increased performance with tuning.

### Reply 7:
Is this simply a modified bitstream that is able to be told the clock frequency, or does it test the device and then load the appropriate bitstream?

### Reply 8:
It tests and loads.

### Reply 9:
@BFL: This new, nice feature is making the process to find the unit-specific, proper clockrate more easy, thanks for it even if I don't need it. It shows the same results, you would get by testing the different images manually. However, in the end it shows me that my units are able to run the fastest available image without any problems, what I know from my own test already. So when will faster images be released? BFL-Engineer announced them over one Month ago. I guess there is no need for them anymore in the ASIC era...Also the 792 Image is corrupt and is still not fixed.As you already stated the environment temperature is very relevant to the max clockrate you can use. My units are in a room without A/C and are seeing over the year environment temperatures from ~17C-33C. So to measure the proper clockrate only once, doesn't make so much sense. If you don't want to care about your units anymore you have to test it with the max. environment temperate and loose a lot of the possible hashing power over the year. It would be much better if the mining software (e.g. cgminer) has the Auto speed tuning feature included for BFL singles. Which means it will always load the most perfect ima<rest of post truncated>

### Reply 10:
The ztex doesn't require loading a new firmware - the firmware allows you to tell it what speed to run at on the fly.i.e. the actual code in cgminer adjusts the MHz up or down as required during mining on the ztex.I'm not sure why that is a difficult option, but I guess that is just the ztex guys know what they are doing and how to do it ...Yes getting one answer of how fast to run will not last for weeks or months - you'd have to regularly stop it and run speed tests to determine the optimal speed ... though I'd even suggest the obvious that between midday and midnight there would be a differenceI run my BFL on the standard 832 bitstream for a few reasons:1) I don't have windows anywhere near that mining rig (and BFL wont tell us how to program it or provide linux softwre)2) The temperature drop at the moment is below 10C at night since it is now winter here and during the day it varies quite a bit - but certainly always below necessary temperatures. I'm sure that it could run faster at night but I'm seriously not gonna setup windows on my main mining rig or have to reboot it regularly just to change the bitstream for day and night time - that would be immensely annoying

### Reply 11:
Hehe, I saw that post you deleted BFL. I laughed!

### Reply 12:
Yeah...

### Reply 13:
Looks cool. :-)

### Reply 14:
For mine, it settled on the maximum speed, but later started throttling. However dropping it down one notch manually fixed that, but i<rest of thread truncated>
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    ""hardware_name"": ""mini rig"",
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  },
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    ""hardware_name"": ""BFL singles"",
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  },
  {
    ""hardware_name"": ""ztex"",
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  }
]"
2026,"Date: 2013-10
Topic: [OPEN] ASICMiner Blades (Rev2) 10.7gh/s - 1.1 BTC - Pre-made power connectors!
### Original post:
I have a few blades left. I'm still shipping with pre-made power adapters.

","[
  {
    ""hardware_name"": ""ASICMiner Blades (Rev2)"",
    ""hardware_is_owned"": true
  }
]"
16999,"Date: 2011-12
Topic: two 6870s, -v crashes the computer into restart
### Original post:
I have two 6870 cards, and when I enable -v as the flag on both of them, it crashes the computer and restarts the system.I can run -v on one card at a time only. The problem is, if I don't enable it, I lose 100m/hash on the card that it isn't enabled on.Is there any way around this?edit:I have the latest ATI drivers, and the latest AMD APP SDK drivers.

### Reply 1:
Sounds like you're using GUIminer...Try CGminer here!It's much more efficient, and may fix the problem.Something else to check, you crossfire disabled?

","[
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    ""hardware_name"": ""6870 cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI drivers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD APP SDK drivers"",
    ""hardware_is_owned"": true
  }
]"
5182,"Date: 2013-06
Topic: Soon you can ""pre-order"" BFL ASIC ""chips""
### Original post:
Well, BFL says you can pre-order their asics this month.While they dont give figures on how much power does the chips exactly use, they seem to be suggesting you will get your chips in about '100 days' :pButterfly Labs Announces Bulk Chip Sales <link>

### Reply 1:
LOL yup in ""100 days"" you will get all the VAPOR CHIPS that they promise to deliver.Yes buy into it knowing their track record of promises they fail to deliver on people.

### Reply 2:
Based on their previous delivery time vs promised delivery time I wouldn't get your hopes up. Conservatively, it's been 10 months or more at this point. If they can't even put out their own units I wouldn't be very comfortable buying anything from these guys.

### Reply 3:
1 year +100 days

### Reply 4:
Who still trust in bfl?they are just ridiculous.

### Reply 5:
Ignoring the OP and this thread. Ridiculous.

### Reply 6:
Big Free LoanRev. 2.0Now and for ASIC chips!

### Reply 7:
All the signs are there:1. BFL failed on ALL of their promises for the past year. (THEY LIED ABOUT EVERYTHING PRETTY MUCH)2. Haven't started shipping large QTY of preorders to customers.3. At Bitcoin Conference BFL's name was not placed anywhere on the program information nor were they included in the seminar material (AVALON was).4. Now they want to pre-sell their ASIC chips to you ""exclusively"" because they really care about you protecting the bitcoin network and want you to turn a profit in doing so. NEW!5. Josh still has time to troll these forums despite claiming they have so much shit to do and not enough time. He finds time to come here and shit on the forums.6. BFL has not paid its 1000 BTC bet nor has Josh paid his 1000 BTC bet.

### Reply 8:
So...pre-order today, and receive the chips sometime in September, 2nd week in the year2017.

### Reply 9:
FTFY.If man is still alive.

### Reply 10:
Well seems like there is nothing left to say about this. GO BFL GOaway!

### Reply 11:
Seriously?Damn, thats like being erased...Edit: If this were the case as you claim, perhaps it is because BFL brings bad Mojo or Shame to the red carpet that is any BitCoin Company? Guilt by association?

### Reply 12:
salt and vinegar please!

### Reply 13:
Yes even on the map overview of the booths...the booth BFL was at was labeled ""BITPAY"".LOLYifu gave a talk so AVALON did get mentioned in the conference material. Yifu was like a celebrity. Josh...nope...

### Reply 14:
It's as if they asked themselves ""What could we possibly do what would make us look even WORSE right now?""ROFL! I gotta admit, they have balls of steel. They must be counting on the bulk of their pre-order customers converting to chip orders. BFL has gotta know by now they won't be shipping a working product... at least not one that resembles the initial specs.

### Reply 15:
boothjacking.i guess they ran out of $$$ to pay for the booth.

### Reply 16:
Booth-Hobo?

### Reply 17:
Some bitter people in this forum. BFL got their long boards in and are going to be working around the clock 24-7 to ship everything out now. Josh says that everything that has been preordered up to now will ship before 100 days, when the first set of chips would be <truncated> they are shipping Jalapeno's, the chips themselves are fine. I tend to believe his timeline of 100 days because that process is largely outside of BFL's hands anyway so there is little for them to screw up. It all comes down to whether you believe BFL and Josh (I do) or you don't, like most people posting in this thread (Who will undoubtedly point out for the ten thousandth time their reasoning.) They have over ten grand of my money, and I'm completely confident in eventually receiving what I paid for. That said, I won't be buying chips because I do not have the expertise to build them into viable miners. I would rather purchase a finished solution.

### Reply 18:
How may Jalapenos have they managed to ship in the 2 months since they started shipping?

### Reply 19:
Lmfao <truncated> Ok almost their 2 more weeks people oh shit our buffer went on a buffing fire mode please hold for another 2 weeks......... Sorry our backup of our backups backup is down wait another 2 year.

### Reply 20:
Give this guy a clue. (A quarter) You just never learn. You really never did learn this years lesson? OMG.Even the (fluffy puppy and lovable) Moderator has his immense doubts....I think at this point you should order even more from BFL. Sell everything. Don't listen to the general consensus (which has reached a staggering critical mass 10x over).No, don't listen to us ""fools"". Spend everything you have and show us how you became rich by trusting Josh's claims! Do it, you know you must.... <Does a mime motion with hand...for ""a finished solution"" with an imaginary miner.You are ""super special"" because you see through all the baloney!

### Reply 21:
I am so sick of the word ""pre-order"". I've taken it upon myself to start keeping in<rest of thread truncated>
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    ""hardware_is_owned"": false
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    ""hardware_name"": ""Jalapeno"",
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]"
17397,"Date: 2013-03
Topic: Help with a buy ASIC Jalapeno
### Original post:
Hi everyone, I'm new in this mining thing, i only mined a year and half ago and with my CPU XD so i don't anything.My question is:I want to buy a Jalapeno (I don't know how much time i will have to wait to get one after the pay), its 4.5 GH but with the new 60 GH the difficulty will rise a lot right?If I buy a Jalapeno I will profit?

### Reply 1:
I guess there are about 20,000 - 30,000 units in backorder.When you order now, your Jalapeno will be delivered somewhere after 6 months.25,000 units X 60.000 Gh/s is about 1,500,000 Mhash/s of hashingpower coming in about 6 months.That's 1,500 Thash/s, compared to the 50 Thash/s now.Difficulty will skyrocket to 145,000,000 in about 6 months.So you can still mine 0,015 BTC in 24 hours @ 4,500 Mhash/s when you receive your Jalapeno.But I could be wrong...

### Reply 2:
No, there are multiple reasons why:1) It's BFL, search the forums. They have been delaying their schedule continuously and many even question if there is a real product.2) Increasing network difficulty, check out this link: <link> Place in Pre-Order List: There are tons of folks who have orders 6-10 months ago for ASIC hardware, be prepared to wait months.If you're interested in the concept and don't mind waiting awhile, go ahead. With how the mining landscape is changing, expect that you will not break even if you buy hardware now (unless you're going large scale).Hope this helps

### Reply 3:
Thanks for the answers I didn't know that BFL doesn't shipped yet, well I will not buy for now, maybe a 60GH if i get more money

### Reply 4:
There will always be new opportunities to start mining.New devices will come, old will get obsolete.Next time, pre-order in time and expect to wait 6-12 months for something to arrive.

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  },
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    ""hardware_name"": ""60GH"",
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  }
]"
15409,"Date: 2014-11
Topic: End of an Era
### Original post:
Btcguild planning to shut down by January 31, 2015. <link> is it really the mining farms getting on the bitcoin economy? What started out as P2P now getting converted to B2C. Now, the regulations will come in place slowly.

### Reply 1:
Nothing lasts forever. We just need to adjust in the best possible way to the new opportunities. But I would like thank US government - great job with all those online regulations. We need more laws and taxes after all.

### Reply 2:
Sorry to see them go. Who'd have though anonymity would become an issue on the internet...

### Reply 3:
That's the way things are. Everything is impermanent. We just go round and round.

### Reply 4:
Pools are about centralizing mining power anyway... Even descent and honest pools like BTCguild... Fortunately there is p2pool and it's up to the individual miners to decide if they want to use it or not...

### Reply 5:
Thank you for the article link

### Reply 6:
I've heard that chances are it won't close. Sounds like there are a few people interested in purchasing it. Otherwise it would sure be disappointing to see BTC Guild go.

### Reply 7:
The owner of BTCguild has said that he is in talks to have the pool sold and for him to stick around to help with the pool for a number of years. If the talks end up falling through he is going to restart the process of closing the pool and will not consider selling it

### Reply 8:
Should have sold it when times were good. A little curious on why anyone want to buy the pool at times like this.

### Reply 9:
Well, they might be seeing something, we are missing. These guys make long term predictions, based on stats they have now, and if projections look bad and margins thin, it might be better to climb out, whilst everything are on the up and up.

### Reply 10:
Plans changed after a long weekend of discussions with both potential buyers, long time users, and even other pool owners. The pool is no longer closing, it is not being outright sold. What is being considered is moving the pool out of the country, and possibly taking on an overseas partner in order to help the pool survive whatever regulation is applied in the US. At the very least it will open more opportunities on that front. Other changes are being made internally to lower the funds-at-risk in the event of a successful compromise.

### Reply 11:
Good news....

### Reply 12:
Why should you have to login to withdraw, just settle what's owed, by send it to the registered BTC address on account before you close!I'm having trouble logging in, LOL, praying to the BTC support gods now! Shouldn't be much in there, I pay myself daily to avoid such issues!

### Reply 13:
it makes some effect for bitcoin prices or not if 1 of the big pool closed?

### Reply 14:
No. Mining is affected directly by the price of bitcoin. The price of bitcoin is not directly affected by mining.

### Reply 15:
I always thought the price of bitcoin wass like any other product that is on the market, supply and demand... since so many new coins are introduced into the market each day there has to be someone out there willing to buy those coins at a given value, if they are not being sold the price drops if people are wanting more than what is out there the price rises (or atleast that is the way i assumed it worked)

### Reply 16:
The rate coins are produced varies very little. That's the whole point of diff adjusting in response to the amount of mining.

### Reply 17:
sure,....just check the difficulty graph when the btc price is rising!!!

### Reply 18:
BTC Guild is not closing anymore. OP can lock this topic. Even if it were to close, it is not the end of an era, it's just miners' preference on pools.

### Reply 19:
yup, if the bitcoins drops again most miners would be forced to close

### Reply 20:
This has been stuck with me for a few days. Is it due to the volatility, arbitrage market, that miners see an affect from fluctuations?

### Reply 21:
i do not <truncated> close or not???hope someone can clarify

### Reply 22:
Large scale miners are affected because most of their inputs to mining (e.g. electricity, rent, cooling, staff, hardware) are priced in USD (in the USA). That means when it comes time to pay the electric bill, or staff wages, or rent, they may need to sell some BTC to do so. They may find they have less, or possibly no, BTC left over. Small scale home miners don't have the same constraints, but they may also decide not to subsidize their mining ""hobby"" forever.

### Reply 23:
Some have huge margins so it would just mean they are not making much money out of their investment or suffering a small loss but most will keep mining hoping for a higher price in the future.If the price stays relatively low mining farms will slow down investments and not replace hardware; there will be less new farms and they will be smaller

### Reply 24:
btcguild is not closing down, it is official, as per the announcement on their we<rest of thread truncated>
",[]
19793,"Date: 2014-09
Topic: my cgminer freezes and hangs up the ssh client.
### Original post:
I open cgminer with my SSH client in my Ubuntu Linux 13.10 station.... after several hours, cgminer freezes and give this message in log:""hotplug thread 32535 create failed""I restart the client, and all work fine, no need to reebot, any clue? Thanks for help!

### Reply 1:
Are you using the latest official version of cgminer or an older version or fork of cgminer?

### Reply 2:
I'm working with severals versions... from 4.3.4 to 4.4.1

### Reply 3:
Hey Ckolivas! I check, and always hangup when the [ID] from the ASIC is near to +-32500, its this var a signed INT? maybe is a var overflow?

### Reply 4:
I double check, and confirm that cgminer crash, when ID from ASIC reach to 32535

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    ""hardware_name"": ""SSH client"",
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    ""hardware_name"": ""Ubuntu Linux 13.10 station"",
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    ""hardware_name"": ""cgminer"",
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    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": true
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]"
22120,"Date: 2017-12
Topic: s7 problem - one board showing very low temp PLEASE HELP
### Original post:
Hi guys, i'm new to mining and just hooked up a used s7 today. When i check the antminer status page, it shows 2 boards with normal temps of around 60 deg. but board #1 shows very low temps of around 15 deg. I've tried to do a factory restore and it didn't help. Asic status shows all zero's, no x's or missing values. Only hashing around 3th/s. Bad board?Can someone point me in the right direction? Thanks for your help!

### Reply 1:
A while back I picked up an S7 off Ebay. It appeared in really good condition so I put it straight to work without a thought. But every so often, about once a day, it would do like you describe. One board would stop hashing, no errors that I could see other than low temp. Since it was old and out of warranty I pulled the fan screws and then the other 4 screws that retain the end cap which in turn retains the hash boards. With that off and all cables disconnected (power and controller connectors), I slid each hash board out for inspection. I honestly wish I had taken a picture, but on one of the boards there was a giant moth partially against the heat sink and PCB. I don't know if he was grounding something out or just overheating one chip, but after his removal it's been working away for roughly 9 days now and no issues.Long way of saying, probably best to remove the hash boards and inspect them for dirt, debris, or damage.

### Reply 2:
So it was just a bug, nothing to see here

### Reply 3:
But it's such a fun story to tell

### Reply 4:
Did you DEBUG it?

### Reply 5:
Thanks for the help! I was cleaning out the boards and noticed the white 18 pin interface cable was nicked up. This seems to be the issue. Besides getting one from Bitmain or from ebay that are all overseas, anywhere to get one quicker?Thanks!

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    ""hardware_name"": ""fan"",
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  {
    ""hardware_name"": ""hash boards"",
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    ""hardware_name"": ""heat sink"",
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    ""hardware_name"": ""PCB"",
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    ""hardware_name"": ""white 18 pin interface cable"",
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20128,"Date: 2014-12
Topic: Deepbit cashout
### Original post:
Hello!I want to get my deepbit coins cashed out to my wallet, why is this not possible? The mining there is terrible slow so i want to get the coinsout there grBigTiger

### Reply 1:
Check and post in the official deepbit pool thread, you'll see they've run off and abandoned the pool:<link>

",[]
23465,"Date: 2021-03
Topic: Antminer S9 failed after replacing fan
### Original post:
As a noob I impulsively went and bought an Antminer S9 off Amazon. I set it up and it ran happily for several days. I felt it was too loud however and like a dope I replaced the outlet fan with a NF-A14 industrialPPC-3000 PWM fan which was much quieter but 100cfm instead of the 200cfm which it came with. The room temp where I have the unit is 17degrees C.After a few days the hash rate started going down and now it tells me that bminer is not running after operating for a few minutes. Sometimes I see only one hashboard, sometimes I see none. Ultimately I get the following error:Code:bmminer not found= 2135 root 0:00 grep bmminerbmminer not found, restart bmminer ...Have I toasted my hashing boards? Is there a way to tell beyond talking to the control board? Are they repairable with a soldering rework station?

### Reply 1:
Maybe, but unlikely, the miner has temp sensors that stop it from mining when temps go past a certain degree, if you have not disabled that then it's unlikely that you toasted them.Yes you could measure the voltage and resistance of each individual chip using a multimeter, or buy a special fixture tool, but your problem seems like a bad control board, I believe that if you Sdcard the miner using recovery files and then flash 2017-2018 firmware your miner might just come back to life.If it's a bad heatsink or two, yes, you just need the adhesive and a heat gun, but this isn't a common fault with the S9s, usually, when an S9 hashboard is dead it's so because of a toasted chip or a few of them, which means you will need to order some chips and obviously a fixture tool which doesn't make much sense since this is just a single S9.

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    ""hardware_name"": ""NF-A14 industrialPPC-3000 PWM fan"",
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    ""hardware_name"": ""multimeter"",
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    ""hardware_name"": ""special fixture tool"",
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    ""hardware_name"": ""Sdcard"",
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    ""hardware_name"": ""heat gun"",
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    ""hardware_name"": ""chips"",
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]"
19146,"Date: 2014-03
Topic: Need Help, Block Erupter Cube, Solo, Stratum_proxy connect to Wallet QT
### Original post:
Dear Group: I want use my Block Erupter tube to solo mining, in first I direct point my Erupter to wallet RPC port but failed. I use Windows system, This is my <truncated> (my pc's IP is 192.168.1.1, Erupter is 192.168.1.2)I use this walllet configuration with CGMiner is works well, but Block Eruputer tube only support getwork protocol, I think the wallet not support it, am I right?And then I trying use the Mining_proxy.exe be my proxy program, I run it like <truncated> -o localhost -p 3333 -cu rpcuser -cp <truncated> -o localhost -p 3333 -sh localhost -sp 3333 -cu rpcuser -cp 123456 -oh localhost -gp 8332It doesn't work, the Mining_proxy output these message:2014-03-18 21:58:39,467 INFO proxy <truncated> # Subscribing for mining jobs2014-03-18 21:58:39,467 INFO proxy <truncated> # Disconnected from Stratum pool at <truncated> 21:58:39,467 INFO stats stats.print_stats # 0 peers connected, statechanged 1 timesI did some research and not sure wether the wallet support Strutum protocol or not. Did I missed something, and no what is a way to use my Block Erupter to solo mining. Any information will be appreciate.

### Reply 1:
You are running Bfg with the correct settings, is the Qt client fully synchronised with the blockchain relating to the coin you are solo mining?You are correct about the performance loss using Bfg, I see similar, but I have still successfully mined thousands of lower difficulty SHA256 coins that way. Maybe you should ask Slush if it's possible.

### Reply 2:
OliRS, I did some research again and I found it seems bitcoin QT do not support getwork and stratum protocol, I think other wallet QT the same. So I gave up to use mining_proxy, I will use BFGminer to do that, even its have few performance lost, but it can work. Thanks for your advice.About that strange error, Yes I have fully synchronised the block chain, but error still exist, even I delete all old block data and do fully synchronised again. I decide to run my Block Erupter for few days to trying found a block, as current difficulty its possible. If I can make it, I will ignore that error.

### Reply 3:
I am solo mining with a BE cube here on linux (fedora 20) - took me a while to set it up but seems to be working fine so far. Here's what my setup is like :1. I am running bitcoind server with the rpc user / pass set up and daemon & server modes activated, ie in bitcoind.conf the main settings <truncated> of guides to set this up really, 2. I am running bfgminer as a proxy on the same box, pointed at my local bitcoind server. I start it up this waybfgminer -o localhost:8332 -u BTUSER -p BTPASS --no-longpoll --scan-time 2 --que 2 --expiry 2 --no-submit-stale --coinbase-addr YOURWALLETADDRESS --coinbase-sig ""Something cool"" --<link> 8888Since I am on linux I have to execute this using sudo (best)also on my box i have to open up the port 8888 in the firewall so that my BE Cube can hit it over the network.3. My BE cube is pointed at bfgminer in its settingsPool ports: 8888,8888Pool address: <truncated> <truncated> it, seems to be working for me - except I have a very high amount of jobs rejected by the cube and a low efficiency overall and high hardware errors in bfgminer not sure why ?My cube has all chips working but gives meJobs: 6701 Accepted: 126 Rejected: 6392 and a Efficiency of<rest of post truncated>

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    ""hardware_name"": ""PC"",
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    ""hardware_name"": ""BE cube"",
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14309,"Date: 2011-06
Topic: card is at 90f
### Original post:
If the cards running 24/7 at 90 degrees how fast will this card burn? anyone know what kind of small fan i can purchase to kool it down?

### Reply 1:
I think you mean 90C... 90F = 32C = The temp we all wish our cards would run at 24/7.As for the lifespan, not entirely sure, I haven't killed a card yet (knock on wood) though I manage to keep mine comfortably in the 70s and 80s.I use stock coolers on the cards themselves but as it happens I already had a portable AC unit hooked up to my living room window so I just blow cold air directly into the intakes. These can be had for under $300 and I'd consider them to be a good investment if you want to mine long-term without replacing a lot of cards.

### Reply 2:
90C not a big problem, but try not go any more beyond that. I'd be more worried about fan crapping out by running on high RPM for a long time.

### Reply 3:
it actually says 32c so i was assuming that was estimated to 90 degrees f

### Reply 4:
Is it submerged in mineral oil inside of a mini-fridge? That's phenomenal if you're talking temperature under load. The rig closest to the AC unit is still in the 60s for me. Then again I do live in Vegas and it did break 100F today

### Reply 5:
kool, thanks fellas!

### Reply 6:
apparently, the temp measuring unit is broken

### Reply 7:
This. What card is it? We can only dream of those temps with a fan.

### Reply 8:
Personally, I'm running a mineral oil computer with an attached chiller, and I'm maintaining about 55C on my GTX 470's (its a gaming rig, only started on bitcoins recently) while mining. I got into computer cooling as a hobby several years ago, and have played with liquid cooling, mineral oil, and mechanical chilling. From what I understand, every 10C over 50C you roughly halve the lifetime of the component in question, though I don't know what the normal expected life of a well cooled card is.If you're maintaining 90F on a card while mining, I'd be astonished. I don't know how you'd manage that without some serious phase-change equipment.

### Reply 9:
Are you mining in Antarctica? 90F at full load is just freaking awesome.Or maybe you r using LN2 cooling.

### Reply 10:
I don't get how that could be true when most modern GPU's I've dealt with have idled over 60C... do you have a source for that?

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    ""hardware_name"": ""small fan"",
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    ""hardware_name"": ""stock coolers"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""portable AC unit"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""mineral oil computer"",
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    ""hardware_name"": ""attached chiller"",
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456,"Date: 2013-06
Topic: TerraHash Group Buy @ 0.50 BTC
### Original post:
intrested if I can get the funds together

### Reply 1:
Thanks a lot. But I think I would rather wait the 24 extra hours than to trust not only TH but you also. Especially when you are obviously trying to take advantage of Gold Fever suffering people. And usurping the reward TH is giving to those that signed up for an account early.

### Reply 2:
Show me where you can buy 1gh/s of hashing power for 0.50 btc?

### Reply 3:
I'm not saying it can't work. 180 GHZ for 85 Bitcoins. 85/.5 = 170 shares180/170 = 1.059 MHZBut that's if you do what you say you will without a legal contract.

### Reply 4:
Fair enough, I might not trust some guy on the internet either, but everybody has to start somewhere. Yes this is my first group buy, Yes I have zero trust, and Yes I am a capitalist looking to gain from my position.If nobody goes for it then I will use my account for my own purposes and buy my own equipment with it, no harm no foul.I just want more GH/s

### Reply 5:
Maybe whiny kids without BTC should worry more about their own business the arguing with people providing services they can't afford or do not want.

### Reply 6:
it is good now maybe, but when those device will be ready, 0.5 for 1ghs will become crap

","[
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    ""hardware_name"": ""180 GHZ"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""85 Bitcoins"",
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    ""hardware_name"": ""account"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""own equipment"",
    ""hardware_is_owned"": true
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]"
22644,"Date: 2018-06
Topic: antminer s9 set a target temperature?
### Original post:
Is it possible to configure bmminer to aim for a target temperature by throttling the antminer?I see that cgminer as a bitmain-temp parameter but when i do bmminer --help on the antminer this parameter does not seem to show up.Any ideas?

### Reply 1:
You don't want to throttle the hashrate, that's what the fan logic is for.

### Reply 2:
how come?Is my only option to run the fans at 100% all the time?In my specific scenario I have a lot of antminers and need to keep my overall temperature low for the time being

### Reply 3:
In my opinion you're going about this wrong.Generally you address the cooling issue rather than try to modify the miner to run at a lower hashrate. Do you truly see the fans at 100% in the status page? What are your miner temps? Where are you keeping these miners?

### Reply 4:
The fans should control themselves based on the chip temps.... If you really want to run it cooler you can flash the firmware and on the first boot you will have the option to change the core frequency. Try under clocking it a bit. Then you will run cooler, but less hash rate. Hope this helps!

### Reply 5:
The issue is that I have a temporary setup and what happens is my transformer overheats due to poor ventilation and hvac. I wanted to throttle the miners so they consistently run at a temperature that will not overheat my transformer until I get my ventilation and hvac set up. I noticed my miners came with bmminer 2.0.0 so I was considering upgrading to the latest version where they have the option to throttle temp.

### Reply 6:
I am not sure what you are talking about with bmminer. There is no temperature throttling built into the antminers. They hit overheat temperature and just shut off.

### Reply 7:
Such a thing does exist.This is how I control my farm.I can only cool the room so much, and so the frequency is set according to temperature automatically by my software.

### Reply 8:
I was looking on the bmminer-cgminer repo and they had the option --bitmain-temp Set bitmain target temperaturebut i do not see it even with the latest version of bmminer.polymer does your software monitor the temperature and then downclock the asics on demand through the API?

### Reply 9:
You are talking about third party software and not the built in bitmain firmware which is what I was talking about.....

### Reply 10:
Now I just love my 2 S9's. They are running on my enclosed porch. I would like to add code to power off the units if I'm away and the temp exceeds a set temperature.I can use teamviewer to remote to my PC and check, but it would be really nice to not have to worry about it.I believe the one that runs a little hotter did it's own poweroff, but I would like to lower the target temp ;-)

### Reply 11:
Look at Awesomeminer it'll do that plus a lot more. The question becomes, how will you turn it back on?

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    ""hardware_name"": ""bmminer"",
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    ""hardware_name"": ""transformer"",
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6078,"Date: 2013-08
Topic: Miners form factor
### Original post:
There are existing (or at least offered) members for each of the categories, but we are all making our choice based on price and availability instead of personal preferences of the size and power usage, so i have decided to post this pool with exactly this question - what size, speed and power usage would you prefer assuming all other factors are the same i.e. price per gigahash and J/GH.Detailed description of the categories:Nano - single USB 2.0 port (2.5W) even with lower hashrate - ""Nice, miniature and shiny""Micro - signle USB 3.0 (5W) / dual USB 2.0 or external adapter - ""Small, but with good hashrate""Small, but flexible - custom box with low power (20-100W), but with option for expansion - ""I want to start small and go big, but won't sell a kidney""High density / Hosted - Rack mountable units suitable for collocation - ""I don't want mine at home"" or ""I have a dedicated well cooled rack in my basement""Big Daddy - ""No matter how big it is, just give me more hashrate!""You may choose up to 3 options

### Reply 1:
First Week results:Nano- 1 (3.4%)Micro- 3 (10.3%)Small, but flexible- 7 (24.1%)High density / Hosted- 9 (31%)Big Daddy- 9 (31%)Total Voters: 20Personal conclusion (feel free to comment below): The rising difficulty leaves no place for small miners - go big or go home

","[
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    ""hardware_name"": ""Micro"",
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    ""hardware_name"": ""Small, but flexible"",
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    ""hardware_name"": ""High density / Hosted"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Big Daddy"",
    ""hardware_is_owned"": false
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9728,"Date: 2016-02
Topic: Pics of your home mining rigs if you will!
### Original post:
Hello all of you! I am working on a blog about bitcoin for a terminology class in university, and I would like to have permission to post some pics of your mining rigs. I can't simply search for pics as I need to give credit to the pic's owner, so, if some of you would be so gracious to, please send me pics of your rigs! Thanks.

### Reply 1:
In case the mods don't like you starting another thread for this. The main one is here;<link> don't think people will mind, but you can always ask there.

### Reply 2:
Thank you

",[]
1473,"Date: 2013-09
Topic: [Group Buy] 1.55 BTC = 5.7GH/s KnCMiner Jupiter. No fees. 8 SOLD! #9 = 10/54!
### Original post:
I'm in for one share.Code:1 share of KnC group buy.Address: <truncated> <truncated>

### Reply 1:
Okay, I got you down.-Adeel

### Reply 2:
I would just like to note that i will still be accepting share payment, but only upto a point as I already have another business that will be utilizing whatever unused shares their are on this system and the many others I have ordered for our company. These will be priced at a much higher rate than the shares that are available here on Bitcointalk.org. So basically, I'm just leaving this open to help you guys out, as I don't really need anymore sales from here. We are looking to blow Cloudhashing.com out of the water. InfiniteHash.com will be the leader of Bitcoin Mining Contracts by the end of this year.

### Reply 3:
I would like to buy in at 1.55btc. Depending on how i feel when I see the first divi's I would like buy a few more. Are you guys ok with that?

### Reply 4:
Nope, the rest of the mining will be used for <truncated> when it's up. I have bought the early systems so they should be in shortly. Any and all purchases are just to benefit the bitcointalk community as of now and even the ones before!Adeel

### Reply 5:
<link> of OP should be improved now! Thank you all again for sharing suggestions and my apologizes again for *firewworks*!!! Cheers!-anykeywhy-

### Reply 6:
A lot of people have been asking when our order date was, look how low our order numbers are! Some peoples order numbers are in the 5,000's!I got flamed a lot for this in the beginning and everyone said I was just a scammer, blah blah blah. Now here's proof of just 4 of our systems ordered, which I took the liberty of paying for our of pocket, before the members on the forums even had put up enough money for the buys. Along with that the $15,000 worth of equipment above can be seen as well. I basically worked my ass off these past 3 months for you guys, and I hope it all ends up being worth it, for all of us!

### Reply 7:
Hi,Count me in for 2 shares, should pay by tomorrow. So I should expect the miners to be hashing around mid october rite?Thanks

### Reply 8:
I will allow you to pay until tomorrow. After that, I am no longer accepting new buyers.

### Reply 9:
Hi,Just sent 3.1 BTC for 2 shares.Payment address to <truncated> transaction id is <truncated> confirm.Thanks

### Reply 10:
Confirmed. Group buy CLOSED.Adeel

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12565,"Date: 2013-08
Topic: CGWatcher 1.2.8, a GUI/monitor for CGMiner & BFGMiner to help minimize downtime
### Original post:
I only got the latest version of the program to run after manually creating the folder <truncated> with spaces"".

### Reply 1:
Sorry, I had hard-coded the path to try to reproduce a reported bug and forgot to remove it before compiling. It has been fixed, please download 1.2.8.1 again. I apologize for any inconvenience.

",[]
9246,"Date: 2015-07
Topic: Cleaned Antminer S3+ thermal paste, now -------?
### Original post:
Hi,I've just cleaned the right side of the Antminer S3+ (as if you was looking at it with the Ethernet port at the back) by blowing to get the dust out. I took off the metal heatsink and cleaned up the paste a little and reapplied some of my own (not too much at all). I made sure that none was overflowing onto the other components and then reapplied the heatsink and then turned on the miner. Throughout this process I was grounding myself by touching my PSU's metal casing, before, during and after this.When it was on, I noticed my ASIC status showing ------- in the bottom left. I noticed a small RED LED illuminated (RF1) on the miner on the opposite side from where I was working on (the left side) as you can see In the photos below. I've tried restarting the miner, but still the same issue. I never had this issue before.Any ideas?Thanks,Owen.

### Reply 1:
turn the psu off. unplug the psu for 2 minutes.plug the psu in turn it on.wait 10 minutes take a screen shot of it let us see the screen shot.If you have the ---- chips at this point let me see the screen shot with at least 10 minutes run time. not 22 seconds.

### Reply 2:
Hi,I let it run for nearly 20 minutes, and this is what I got;

### Reply 3:
more voltage, less voltage.

### Reply 4:
What do you mean?

### Reply 5:
He means try with different voltage settings for chips in dashboard. Also try with lower clock settings. Did you tried to connect 4 PCI-e power cables or 2?

### Reply 6:
I connected2x PCI-E connectors and 4x. I also tried setting the voltage from what I had it at (0750) to 0000 (default). I did a reset also, but still the same issue.

### Reply 7:
Some how the cleaning you did broke something. What thermal compound did you use?Some are non conductive but some are conductive. Maybe you used a conductive compound and shorted something.If you do not know if the thermal compound is conductive (Arctic Silver is conductive) you can run a line of it on a piece of paper and put an ohm meter to it.If it is conductive replace it.Here are some non conductive compounds<link>

### Reply 8:
Well I was thinking about using alcohol wipes and cleaning everything around the chip. Leaving it for a good half hour and seeing if it fixes the issue. What do you think?

### Reply 9:
OK well that didn't work. It just took out the other row somehow. I'm thinking this has been really poorly built. The PCB's I work with are so much more sturdier than this. The IC's have had shorts all across them and yet they still work when you take the shorts out! Yet with an Antminer, you touch one and the whole fu*** thing breaks.

### Reply 10:
I may have went overboard on not being needed. But I am going to be redoing thermal paste on a C1. I got some remover and purifier. It is a little extra time and a tad more money but figure I might as well do it right. Also was pretty cheap on amazon.

### Reply 11:
Ok, I've just been on bitmain support yesterday all night.The RED L.E.D that is lit up called ""RF1"" indicates that the hashboard is working. So the hash board in my case that isn't working, the L.E.D isn't lit up. There is a chance that if you clean the thermal paste off and make sure there are no short circuits, then the board will begin to operate normally, however this is only a chance. In my case, this didn't work, however I still think there is some shorts on a very small scale that I can't see.

### Reply 12:
I have been working on a C1. I used cleaner and purifier and it still did not do the trick on some. 1 blade works perfect after it. I think I'm sitting it in parts unless I decide to give other 3 one more try. I think from doing it 3 are good blades and one has one or two bad chips possibly if I could get them all to work right.I have figured out it is a time consuming process to do it right to say the least.

### Reply 13:
Is that in terms of the ASIC status showing ""-"" for those chips you was unsuccessful with?

### Reply 14:
Well the one that had that now shows only 8 chips and no ""-"". It's been a really hit and miss project. And with C1 is a huge pain draining liquid to try again.

### Reply 15:
I spoke to Bitmain support and ordered a new Hash PCB for my S3+. Bought with Bitcoin and it came within a week (to the UK). They are really helpful and answer all your questions. Glad that it came today and installed it successfully - It's running fine now. They sent one of the newest hash boards out (V1.4 - not sure if it's the latest, but I think it is).

### Reply 16:
I am glad that your device is hashing full speed now

### Reply 17:
Are the new AS compounds conductive? because it used to be more or less non conductive.

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14821,"Date: 2013-11
Topic: Pooling versus solo mining
### Original post:
If you don't have up to par mining equip, you should pool, am I right?

### Reply 1:
You can do whatever you want. If you are feeling lucky, you can even mine with 3Mh/s. If you want predictable and guaranteed income, then pooling.

### Reply 2:
I've got 4 BE's on solopool right now. I'm trying not to look at it.

### Reply 3:
The expected return that is the average over all possible futures is the same for either (ignoring any outages, pool fees, pool stales, any differential risk of theft/hacks at pools/locally). The variance of returns is what differs. If you're not depending on every cent of mining income for anything in particular you might prefer a higher variance option over fees and pool related risks. If you're the sort of person who likes to gamble then solo mining should be unusually attractive because the odds are in your favor (assuming you're mining at a profit even in the pooled case).There are things in between just pooled and solo. E.g. with p2pool you can turn your share difficulty up fairly high.

### Reply 4:
That's $200 annually in a pool on a static 5P network mining $1000 BTC.Solo, that's one block every 5 million blocks, or every 95 years.So I guess it's a question of life expentancy. Do you smoke? Exercise regularly?There's a pool joke in there somewhere, but I can't find it.

### Reply 5:
I noticed that P2Pool also gives 0.5% of the reward to the miner that found the block and then divides the remaining 99.5% of the reward among the rest of the miners that participated.Is this higher reward to the miner that solved the block common among pools or is this unique to P2Pool?

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    ""hardware_name"": ""4 BE's"",
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6121,"Date: 2013-08
Topic: avalon stopping for hours and not restarting
### Original post:
I believe it might be something in a recent firmware. I too had this occur, perfectly stable machine for days on end, then decided it wasn't happy. Would restart several times, then get stuck on 100% hardware until physically restarted. Then back to happy happy happy.

### Reply 1:
i havent updated the firmwareit was the one that came with the unit and it was hashing for 25hrs continuously at 1 point. I shut it down to add some fans or tried changing the temp thresholdthe only things i changed was the rear fans, adding thermal paste to the heatsink and case.

### Reply 2:
Do the fans stop when this happens?

### Reply 3:
Try a different firmware. I have migrated all my avalons away from that version. Same issue.

### Reply 4:
need some helpfor some reason, the miner has been stoppping every now and then and refuses to restart mining unless i manually power down.it was running at 350mhz for sometime and running fine. so i tried running at 355mhz but it stops every few hours so i lowered it to 350mhzfirmware: 20130703when the miner stops hasing, it reboots and the elaspe timer resets but the hashrate, temps and fan speeds all show 0as for cooling, i've added heatsinks to the side of the case (where the main heatsinks are mounted), added thermal paste between the main heatsinks and case (the contact between the heatsinks and case) and added 2 exhaust fans6hrs ago it stopped mining when i checked the miner's page, the time elasped was just 1min, meaning the miner had restarted a min ago. so for 6hrs, it was doing nothing?I mean, so 1 min ago, it restarted on its own but not yet hashing?what was it doing during the 6hrs and why isn't it restarting and hashing?

### Reply 5:
nope. they continue spinning, that's why i had a huge shock when i checke my btcguild status page and it says last share was 6hrs ago.when the miner stops hasing, it reboots and the elaspe timer resets but the hashrate, temps and fan speeds all show 0

### Reply 6:
i have no idea whether i should do that or not since the avalon users thread reports users with bricked units or unstable issues.

### Reply 7:
I wouldn't worry about bricking it, only one user reported that happening.20130818 was a great firmware that brought good speed increases, and the latest 20130821 seems solid too. Remember that if it's a batch 3 you need to add --avalon-temp 70 --avalon-cutoff 90

### Reply 8:
There's usually a reason newer versions of cgminer/avalon firmware come out.

### Reply 9:
which firmware is better? 20130821?

### Reply 10:
maybe you deep fried the circuit? have you monitored the voltage and temp before and after changing the clock settings?

### Reply 11:
temps were the same. i mean same rangeno idea where to get the voltages from the openwrt page...

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5737,"Date: 2013-07
Topic: asicminer and BFL from the same computer?
### Original post:
Hello,so I'm trying to run a jalapeno, a bfl fpga single, a handful of asicminer usb eruptors and a blade (which i'm getting soon iagr) at the moment.i have one computer running the bfl products with cgminer and another running the asicminer products also with cgminer. Is it possible to have all that run from just one machine, because I'd love to get my laptop back.. When I plug bfl and asicminer products on the same machine, cgminer bugs out on start. I wanted to run two instances of cgminer separately, pointing each at different cards. but I can't get it to run even one. I've heard you can use two different mining soft simultaneously but i don't know my way around the mining software world anymore, i stopped following the new projects when i found cgminer a while back now. So I'm hard pressed to think of one to run in parallel, let alone two as cgminer seems to hate having different brands hooked up.How can I get my laptop back?Machine 1 (bfl) is a shitty little micro pc running windows 7 pro off an atom chip and Machine 2 (asicminer) is a asus laptop with Win 7 Ulti off an i3. I'm not adverse to putting a Linux on the micro PC if that helps anything, but i'll be asking a lot of <rest of post truncated>

### Reply 1:
I run four block erupter USBs and a BFL Jalapeno from a Raspberry pi, uses like 2 watts

### Reply 2:
I'm fairly certain that 4 Erupter USB's, a BFL Jaly, and a RasPi use more than 2 watts.

### Reply 3:
This thread pertains to the host controller for the mining equipment As to the total power draw, 68 watts for 9.2Gh/s

### Reply 4:
what soft(s) do you use?

### Reply 5:
I compiled CGminer from the source code on the default Raspian image you can download from the raspberry pi website.Minepeon also works well and comes pretty much ready to go

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bfl fpga single"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asicminer usb eruptors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blade"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""block erupter USBs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFL Jalapeno"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RasPi"",
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]"
10906,"Date: 2020-11
Topic: ANTMINER S4 Discussion and Support Thread
### Original post:
And people are buying these like crazy! Must be a real bargain. Maybe I should get in line after all.

### Reply 1:
Continuation from previous thread: <link> much parameters for you to compute and that may be correct and you may have a very little margin.But customers have only two parameters to compute, the money goes out and the money earns, the ROI.So your statement can't be justified even though if this is the lowest priced miner than others.Hosting may be opted to save cost but that cannot offset buying miners.

### Reply 2:
well GL you all I be looking for used miner now till i see a better deal on S4 or maybe s5 or s6 with more improvements over this so ebay here i come dis test and hate ebay .

### Reply 3:
The never ending progress picture is misleading because it shows S4 power efficiency coming in at under .5W/GH, but your official specs say the power efficiency is .69W/GH.

### Reply 4:
I don't think miners will buy this like crazy if they have brains. No offence to Bitmain.Already discussed the about price a lot in the previous S4 thread and,I think we should stop talking about the price of S4 now.Let it passed, buy with your brain and not with your mind.On a side note: I like the case and design, very tempting to buy on that side.

### Reply 5:
that the point they will . well i need to let it go now and watch for deals look on at what might be coming .bitcoins are here to sty for many more years . it will have it ups and downs ,cya I'll keep watching i know the cost of run in a business and it was or was far more then ever has been in china in the US . and still is in the US .

### Reply 6:
TOO EXPENSIVE DO NOT BUY ! you are just flushing your btc/fiat down the toilet bowl !As usual Batch 1 ... eh hmm eh hmmmm just like other S'sI'll wait out for my Min Buy Qty of 30 units.

### Reply 7:
Selling S4 coupons for 0.25 BTC each. Send me a PM. Each coupons saves $200

### Reply 8:
How much does the coupon reduce the price?

### Reply 9:
I thought the S1 had the same efficiency as the S2? I think that graph might be misleading?

### Reply 10:
Too expensive Bitmain, sorry.Have you upgraded the firmware to the latest cgminer with these & other models, as you promised to do many weeks ago but still haven't - or are you still using the old, security vulnerable version?Please post a link to the firmware.I can't even buy spares for my S2 - what are the spares availability for this model - if any?

### Reply 11:
Picture of internal components= 4 X S1s with upgrade applied powered with a server PSU and overclocked. OHHHH the advances in technology. Pretty cool case and screen though.

### Reply 12:
5 s3's and a PSU are cheaper:(

### Reply 13:
Bitmain, congratulations on the release of the S4. Unfortunately, the pricing and efficiency do not justify the purchase.

### Reply 14:
This is definitely not for the home miner. Will just wait for the next batch of S3+ unless the price for that goes up as well.

### Reply 15:
Does these come with rack mount ears / brackets?

### Reply 16:
From my bitcoin mining calculations, you will never break even on the S4. Think about it, it will take you 5-6 months just to break even, during those months you will have 2 difficulty jumps. Can anyone who buys one of these explain to me what your reason is? Please don't say for the fun of mining, because you can just buy an old GPU to mine if that is the case.... I also think people who buy these for home use are underestimating how loud those thick fans are going to sound in their home....

### Reply 17:
Not so much... <link> orders in 90 mins - although I do feel sorry for whoever dropped 103BTC - ain't gonna see them back, this side of 2015!!!

### Reply 18:
Says in the beginning of this thread:Notification for S2 Upgrade Kit - Coupons being issuedTo all customers that ordered AntMiner S2s: We analysed the business case for S2 upgrade kits for end users and determined that it would not be worthwhile for either party. * The S4 runs at 0.69 W/Gh/s power efficiency, which is significantly improved compared with the S2s 1W/Gh/s. Even though the upgrade kits used the newest BM1382 chips manufactured at 28nm process, it was not a significant leap in power efficiency. However, the next generation chip is more likely to be worth doing upgrade kits with.* The S2 is still profitable to run for the next several months with its 1W/Gh/s power efficiency and so now is not a good time to replace them.Coupons will be issued to express our sincere thank you for supporting Bitmain over the year. Each coupon has a value of $200 and will be issued for each S2 unit purchased. These coupons are only applicable for the purchase of S4s and only one coupon can be used per S4.If you ordered an S2 on bitmaintech.com, please check the coupons automatically added to your account. If you ordered an S2 from our authorized partners, please contact them directly to ge<rest of po<rest of thread truncated>
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    ""hardware_name"": ""used miner"",
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    ""hardware_name"": ""S4 coupons"",
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    ""hardware_name"": ""old GPU"",
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    ""hardware_name"": ""AntMiner S2s"",
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    ""hardware_name"": ""S2 Upgrade Kit"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""BM1382 chips"",
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]"
5951,"Date: 2013-08
Topic: BFL board project COINADO - Hash test done and working
### Original post:
COINADO.... COINADO..... COINADO.....

### Reply 1:
I'm impressed with the pace of the board development.

### Reply 2:
I knew it was a good idea to transfer my chips to you.

### Reply 3:
I believe we are the first that have a hashing board... And COINADO takes the lead...

### Reply 4:
Nice to see a BFL chip in action. Can't wait to see all 8 hashing away!

### Reply 5:
For some reason this topic was locked... It might be me pressing lock by mistake(I fall a sleep behind my computer). No idea... Sorry to everyone...

### Reply 6:
I saw your post on the other thread. Yeah it seems that they don't like the shortened url's anymore. Same thing happened to my PGP key link.

### Reply 7:
16 chip board just got a name COINTAMINATION... I like it do you?It will be ready for test in 14 days and we are sure it will work. We would like to run boards for longer time so we need samples for it.

### Reply 8:
Just sayin', I'd try coinductor. Congratulations to you guys.

### Reply 9:
I have 2 sample chips here that I can donate if they will help. Let me know.I will have more chips to send you later, when BFL delivers them.

","[
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    ""hardware_name"": ""hashing board"",
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  },
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    ""hardware_name"": ""16 chip board"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""sample chips"",
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6367,"Date: 2013-09
Topic: Future hashrate contribution from each hardware vendors/institutions
### Original post:
I open this thread to bring awareness of how hashrate will grow based on data we get from the vendors. This is the data that NONE of hardware vendor would like to share. So all of these are reasonable projection only. Any info thats contributed will get updated in this post. This thread is essential for anyone looking into mining investment, so ppl dont make blind decision and convinced by shills or anyone with their own agenda. I will break it down month by month (at the end of each month)October 2013: + KNC mining: ~250THs (filled me in pls as i dont follow every update)+ BitFury: ~200THs (second batch, altho it might be pushed into Nov)+ HashFast: 200THs (500 Babyjet sold in first batch)November 2013:+ HashFast: ~100Ths (anyone will better projection can give their background info)March 2014:+ BFL Monarch: ~ 200THs (i would expect $1million in sale the minimum, big customers from BFL alone would beat this figure )+ Black Arrow: Will be updated once we have better infoI left out all the mining company because i've not checked into them. So anyone please give me more info about them. I will keep this post and updated as we have more contributions. I'm not looking into any mining i<rest of post truncated>

### Reply 1:
Isn't this sort of the same thing?<link>

### Reply 2:
Anyone have this data from January 2013 to Sept 2013?I'd like to see which company contributed how much TH broken down by month.

### Reply 3:
These numbers can't be right as it would require each vendor to precisely disclose their sales figures.Good like prising that data from them!

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    ""hardware_name"": ""BitFury"",
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    ""hardware_name"": ""HashFast"",
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    ""hardware_name"": ""Black Arrow"",
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492,"Date: 2013-06
Topic: [Groupbuy] !NEW! 2nd batch Jupiter KNCMiner - 1 sold - 2nd miner: 147/240 sold
### Original post:
Thanks for clarifying I indeed misread and didn't see the 1/248 part.Cheers

### Reply 1:
ive been using 240 as my divider as well...350 / 248 == 1.411 for 0.30 BTC

### Reply 2:
I'll reserve 4 shares, I was in first group buy (BTC1.20).Jski

### Reply 3:
didn't see that But hashrate wise this GB is exactly the same as the first one. Otherwise we couldn't add it to the bitfunder shares..

### Reply 4:
Please also reserve two shares for me, got to scrape everything together. Thanks for doing this again, cool move.

### Reply 5:
I was referring to the miners that come after the second there is a chance that the third miner (because its not ordered yet) will arrive at a different date than the first two.

","[
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10997,"Date: 2021-09
Topic: Old controller boards (bitmain) usefull?
### Original post:
What are the old controllers compatible whit now days.besides than just extracting the BBB board for replacements , can they run newer hashboards ?

### Reply 1:
What do you call ""old"" control board ? Have a nice day

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    ""hardware_name"": ""old controllers"",
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  },
  {
    ""hardware_name"": ""newer hashboards"",
    ""hardware_is_owned"": false
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]"
18172,"Date: 2013-11
Topic: script which lowers RPM when temp is too high on GPU for cgminer
### Original post:
Does anyone know of or have suggestions on how to write a script which would turn down the RPM on individual GPU's when their temperature gets too high? Needs to work with cgminer.

### Reply 1:
Are you insane? Your cards would die that way. Why would you want that?

### Reply 2:
Perhaps I'm saying this wrong or perhaps I'm misunderstanding how these things work. What I'm trying to say is, is there some program that when the GPU's are working to hard or the air conditioning is off for some reason then it will tell cgminer to make itself stop making the cards work as hard so that the cards can cool down and don't burn out.

### Reply 3:
It's already built into cgminer with the auto fan and auto gpu options, but only for AMD cards.

### Reply 4:
cgminer --auto-fanWorks nicely for all my 79XX GPU's except Powercolor 7990 which has a screwed up fan setup anyways.

### Reply 5:
RPM = Revolutions Per Minute.Lowering RPM is slowing the fan down. The total opposite of what you want to do.

","[
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    ""hardware_name"": ""AMD cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""79XX GPU's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Powercolor 7990"",
    ""hardware_is_owned"": true
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21438,"Date: 2017-06
Topic: Antminer S3+ on R-pi
### Original post:
Is it possible to have the miner controlled by the pi or do I have to use a computer for that?I just got the miner and haven't tried anything with it yet.Also, I know it consumes around 370W, will a 450W PSU be enough for the long run?Nevermind... please delete

","[
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  {
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]"
13074,"Date: 2014-05
Topic: ScalaMiner 0.1+ beta - new highly-concurrent mining control software (and proxy)
### Original post:
**Version 0.2**added Bitmain AntMiner U1/U2ASICMiner Block Erupter USBMore 'icarus' like devices coming as soon as I can afford or verify in other ways.also managed to max out power on my usb hub =\

","[
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    ""hardware_name"": ""Bitmain AntMiner U2"",
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  },
  {
    ""hardware_name"": ""ASICMiner Block Erupter USB"",
    ""hardware_is_owned"": true
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]"
13435,"Date: 2015-10
Topic: No connection could be made because the target machine actively refused it?
### Original post:
Hello,Whenever I try to mine on Eligius or solo using GUIMiner, I get these errors:[Errno 10061] No connection could be made because the target machine actively refused itIO errors - 2, tolerance 2[Errno 10061] No connection could be made because the target machine actively refused itIO errors - 3, tolerance 2No more backup servers left. Using primary and starting over.These all repeat constantly. I read somewhere that you have to press the ""Launch Bitcoin client as server"" setting, however this does not work as I do not use the core Bitcoin client. I use MultiBit HD. Am I missing something? Must I use the core client to mine?Thanks.

### Reply 1:
You do not need the core client to pool mine but, yes, to solo mine you must have the core wallet on you computer or network.

### Reply 2:
What about mining using Eligius?

### Reply 3:
Are you trying to mine bitcoin? With a GPU? While yes you can technically do so but, you will spend more in electricity then BTC you earn. You will never solo mine a bitcoin block with a GPU. The difficulty is far, far to high.

### Reply 4:
Yes, I understand that, but can you just answer my question please? Can I mine on Eligius using MultiBit, or must I use the core client? Maybe you don't understand what Eligius is. It's a mining pool. Sorry if I'm being rude.

### Reply 5:
Dont worry, it sounds like you may be getting frustrated. Confusion does that, I understand. Sorry I dident answer. Please allow me to try. Eligius is a mining pool. You do not need any wallet installed to pool mine. Only mining software like guiminer.From the error, it seems it cannot connect to Eligius. Can you post what settings you have? ( host/server, port ) and we will go from there.

### Reply 6:
Erm, I'm not sure. GUIMiner isn't telling me as it has set it all up automatically. Gimme a sec and I'll figure it out.

### Reply 7:
Er, now I have the settings, but as I set it up myself I now have different errors too.Errors first:2015-10-31 14:26:01: Running command: poclbm.exe <truncated> <truncated> --device=0 --platform=0 --verbose -r1 2015-10-31 14:26:01: Listener for ""Default"" started2015-10-31 14:26:01: Listener for ""Default"": 31/10/2015 14:26:01, need more than 1 value to unpack2015-10-31 14:26:02: Listener for ""Default"": WARNING: ADL missing (no AMD platform?), temperature control is disabled2015-10-31 14:26:02: Listener for ""Default"": 31/10/2015 14:26:02, started OpenCL miner on platform 0, device 0 (GeForce 9600 GT)2015-10-31 14:26:02: Listener for ""Default"": 31/10/2015 14:26:02, checking for <truncated> 14:26:05: Listener for ""Default"": 31/10/2015 14:26:05, no response to getwork, using as stratum2015-10-31 14:26:10: Listener for ""Default"": 31/10/2015 14:26:10, IO errors - 1, tolerance 2Settings next:Host: <truncated> 3334Username: My Bitcoin address, as it should be.Password: Irrelevant, Eligius doesn't need one.

### Reply 8:
Oh I think I see the problem. You have an Nvidia GPU. You need to use cudaminer. I am not sure if guiminer supports cudaminer. If my memory serves, you might see it under the New Miner menu. If you do, create a new miner using cudaminer.

### Reply 9:
I'm guessing OP will need ccminer, but i don't really think there is any point mining Bitcoin with a GPU.<link>

### Reply 10:
Ah yes, onto that now. Exactly how many bitcoins should I be expecting?

### Reply 11:
Even with a pool? Not even a satoshi?

### Reply 12:
I do not intend to squash any enthusiasm you have but, you will be mining for more than a year with that GPU to obtain even 1. Probubly several years.You might want to start looking into mining alt coins. You might achieve whole numbers for you BTC balance faster mining alts and selling for BTC. Even then it will be a long time to get 1 BTC unless you are mining the right alt at the right time (launch?) And then sell it at the right time.This link might be helpful for projecting you BTC mining income/loss:<link>

### Reply 13:
Let me give you a very accurate analogy:I want to mine diamonds with a toothpick but the toothpick isn't working.You can't mine diamonds any more with toothpicks.That's okay I know I can't, I just want to try but this toothpick isn't working.Okay you should try this other toothpick but you still won't find any diamonds.Okay I have this other toothpick, how many diamonds will I now earn?Zero.

### Reply 14:
<truncated> few thousands Satoshi per months. So yes. Zero. You will put heavy strain on your hardware, waste tons of electricity, for Zero Bitcoin.

### Reply 15:
If you do really have your heart set to mine BTC, you should start looking into buying an ASIC. Be warned, they are electricity pigs. So unless you have very cheap electricity or a source for free electricty, that input cost will cut heavly into any profit and beyond. Of course, if BTC price rises a lot, who knows? If the BTC you mine at a loss today can be held <rest of thread truncated>
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20217,"Date: 2015-02
Topic: Electrical questions
### Original post:
Hi all, I was planning on launching a nice mining farm soon at home in a room in my basement adapted against heat , humidity etc... But I have one <truncated> outlets. I was just wondering if it would be wiser to make an electrician come over to change stuff such as wires, outlets even the breaker maybe? To support a good 3650 Watts at least per outlet. I know that 2 pc's on one outlet is fine but such power is like 4 pc's! Do you have any suggestions to make that would help me ? Stuff to buy maybe ? Btw I live in North AmericaThanks for your help !!!!

### Reply 1:
3640W is about 30 to 40 amps per outlet. I think you might need special outlets to handle 30 amps. It would be best to at least consult an electrician. Don't skim on safety.

### Reply 2:
Surely, I don't want to live stressed out because a fire could start! Thanks for your reply!!

### Reply 3:
If your not comfortable hire an electrician. Also the biggest advice I can give you, run your outlets at 240V this decreases then thickness of wire needed, the amount of amps and the heat generated given a set amount of watts.Example: 20A @ 240V = 4800W if you run 120V you would need 40A for the same wattage and much more expensive installation.Good luck.

### Reply 4:
If you have hesitation's get a electrician. Make sure you have enough cooling (exhaust the heat out). How many miners and which miners are you planning on?

### Reply 5:
Thanks for all your replies. For sure I will hire an electrician to check things out. Luckily I know one personally. I was planning on getting SP35 YUKON miners.But for now the amount is unknown since I would get the electricity business done first. Thanks!

### Reply 6:
SP-20's are easier if you have 110. If you have 220's then the SP35 is very nice.

### Reply 7:
Sure but what I calculated... I have to buy psu's for the sp20's and to have the same power than a sp35 , it would cost me pretty much more than buying sp35's and I would need approximately 3 sp20's to equal one sp35. So more outlets and space..:/ anyways I guess it won't cost a fortune to modify stuff... And I guess to be on the safe side it would be only one machine per outlet. I will get in touch with my electrician soon and give some feedback here if anyone needs help on approximate prices for parts etc...

### Reply 8:
Its always a toss up over what to buy. If the SP35 goes down your 100% down, if 1 SP20 of your 3 goes down, your only down 33%. Most here have been thru a lot of upgrading of equipment and we just sell off the older stuff but keep the PSU's to use on the newer stuff. So I like buying good quality PSU's and am still using the same one I had used on my BFL 60GH Single, then on my S1 and then S3 and now use it on my S5 miner.

### Reply 9:
3x sp20's = 1195<link> sp35 = 2235<link>3 evga 1300 g2 's = 510<link> 1195 + 510 = 1705 vs 22353 sp20's run easy 3600 gh they can clock to 4500ghthey sell easier on ebay.

### Reply 10:
Hi, I guess you are right about the fact that if my miner crashes I don't have any or 1-2-3.. ect less but still some running. I guess I will be going with the sp20's ""farms"". You dont really loose a big amount of hash compared to the yukon's hash. But I still need to get some electrical stuff checked out by my electrician when we will be available at the same time. I have ordinary outlets at home ...not industrial or commercial types. I want to do everything a nice and tidy way, not all messy and disorganised. Thanks for your responses.

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    ""hardware_name"": ""BFL 60GH Single"",
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6650,"Date: 2013-11
Topic: Bitmine ROI in 56 days. Opinions?
### Original post:
According to <link> desk 200gh/s ROI in 56 days. (starting mining on December). What do you think?

### Reply 1:
That you are better off buying BFL.

### Reply 2:
LOL? P. S. Bitcoin price is starting to drop a lot..

### Reply 3:
If you want to trow away your money, BFL at least has a better website buying experience.Let's hope the trend to continue.

### Reply 4:
I don't understand. BFL has so many negative comments. Didn't see any negative for Bitmine.

### Reply 5:
agreed

### Reply 6:
Has anyone bought from Bitmine and had negative experience like BFL?

### Reply 7:
I think Bitmine is professional company. They delivered some Avalon clones, also chancelled two later Avalon clone batches as Avalon never delivered chips they ordered and Bitmine offered good compensation plan. After that they produced small production run of based on Bitfury chips. So they have knowledge how to put everything together. Their own ASIC chip taped out already and they annouced yesterday that everything is on schedule. However prices looks a bit high.

### Reply 8:
I have a pre-order with Bitmine, I like their design: small chips that are easier to cool, three power modes including low power 0.35W/GH/s mode which increases the lifespan of the rigs (electricity running cost versus coins earned).They plan to deliver last week of December, so we should plan on receiving the units in January (assuming no delays).

### Reply 9:
I like their design: small chips that are easier to cool,Small chips are (much) harder to cool. At least that's the way it works in any designs I am familiar with...If you have a high speed chip 28nm design that does a lot of calculation it becomes a serious design issue to cool it. Look at the pictures of KNC miners for example -- and the cooling towers inside. That's at the extreme....The old PCs with the 8088 CPU needed no heat sinks -- low clock rate -- not much power... That's the other end of the spectrum

### Reply 10:
I ordered first batch bitmine.....My experience with them has been less than enjoyable. However I'm not going to spew trash about them. They are slowly trying to make up for a giant mistake that has me dealing months trying to resolve.Caution moving forward

### Reply 11:
Here is a different calculation -- <link> probably more accurate...200GHash Machineabout 1 Month (2 Jumps) delivery)Assuming bit coin still goes up -- on averageYou make some bucks -- but not that much...

### Reply 12:
Well if they are going to deliver on January (and not in December as they promise) that makes a huge difference (= no ROI)

### Reply 13:
Also I noticed they only accept bitcoin and Wire transfer, no Paypal. (= no refund)...

### Reply 14:
I know what you mean - and I agree - but I meant small die (package size), not lithography (sorry for the confusion).BFL and KnCMiner have gone for a large die with lots of hashing cores. Bitmine believe that a small die size is better (the way Avalon, ASICMINER and Bitfury have gone).Quote from the Bitmine Coincraft A1 28nm ASIC webpage:

### Reply 15:
They say they will deliver the last week of December (fingers crossed!). It depends on what you mean by ""deliver"". I take it to mean that the courier company will pick up the unit on the last week of December... that is, Bitmine have shipped the unit. Shipping itself takes a variable amount of time, depending on the destination and customs delay. Allow a week for shipping - which is why I expect to get my unit in early January. When I said ""assuming no delays"" I meant delays in Bitmine's ability to produce the units... however I assume a week delay due to shipping and customs.For example, KnCMiner shipped my Jupiter on the 16th of October - picked up in Sweden by DHL. It arrived in New Zealand by 18th of October. Customs delays meant that it wasn't delivered until 25th October!

","[
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFL"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon clones"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitfury chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""KNC miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""first batch bitmine"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""200GHash Machine"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmine Coincraft A1 28nm ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jupiter"",
    ""hardware_is_owned"": true
  }
]"
13099,"Date: 2014-05
Topic: CGMINER ASIC miner monitoring RPC linux/win/osx/mips/arm/r-pi 4.3.3
### Original post:
New release: Version 4.3.3, 4th May 2014Human readable changelog:- Fox for a huge long-standing memory leak with the BXF driver which affected bi*fury, hex*fury and OneString miners.- Formatting fixes for miner.phpFull changelog:- Fix typo- Work should be freed when aged, fixing a massive memory leak for bxf devices- miner.php fix single rig summary/config field formatting- miner.php fix single rig total formatting

### Reply 1:
He's just been personally moderating this post so there's an opening for chaos and invalid details. 4.3.3 is the newest until otherwise specified on github or <link>

### Reply 2:
<truncated> stops to respond to key presses after I restart it by pressing [scy]. hashing continues.

### Reply 3:
Restart's always been precarious and much worse so on windows. Just quit and start again instead. Yes I agree it's not ideal but restart should probably have never been put there for windows since it ends up killing shit to shut down the existing instance instead of shutting down neatly.

### Reply 4:
All -I am new to this board so please don't attack I have been using CGMiner successfully for a few months using one of the pre-built versions from <link> now need to build the program so that i can add Hash Fast support, allowing me to monitor the temperature of each die on my cards, but when i built it myself i don't have the information showing up at the top of the screen that i normally get - and it just doesn't seem to work for me!Any thoughts on how i can successfully build this would be greatly appreciated. The instructions in the README as self explanatory and i followed them each time - the end product is just not what i am looking for.Thanks,BK

### Reply 5:
It's not just --enable-hashfast? Run through and compile others and see how it's named in the list above the command prompt. I'm pretty sure it's in cgminer.

### Reply 6:
You're missing the ncurses development library when building it.

### Reply 7:
Hi, my mining rig is composed by five ""towers"", each one connected via a USB cable to a Windows PC:1x5 Canbused Bitburner Fury boards1x4 Canbused Bitburner Fury boards1x4 Canbused Bitburner Fury boards1x1 Damaged Bitburner Fury board (hashes half speed/usb only)1x1 Damaged Bitburner Fury board (hashes half speed/usb only)So far I am using one instance of CGMiner with --avalon-auto and so far so good, the rig mines with no problem at all.As I do not know how work is handled internally by CGMiner I was wondering if mining performance may be hampered by the bad boards working together with the good ones. Should I run two separate instances of CGMiner? One for the good 3 towers and one for both bad towers ?

### Reply 8:
I am having trouble compiling cgminer, pretty much any version from the past few months on either Mac OSX 10.9 (Mavericks) or 10.6.11 (Snow Leopard) I am using the Mac ports collection for the dependencies, and I was able to comilpe a few months ago but can't anymore, so something has changed.The error I get is:Code:Making all in <truncated> all-recursiveMaking all in libusb CC <truncated> file included from <truncated> from os/darwin_usb.h:27, from <truncated> error: too many #pragma options align=reset#pragma options align=reset ^In file included from <truncated> from os/darwin_usb.h:27, from <truncated> error: too many #pragma options align=reset#pragma options align=reset <truncated> error: too many #pragma options align=reset#pragma options align=reset <truncated> error: too many #pragma options align=reset#pragma options align=reset <truncated> error: too many #pragma options align=reset#pragma options align=reset ^make[5]: *** <truncated> Error 1make[4]: *** [all-recursive] Error 1make[3]: *** [all] Error 2make[2]: *** [all-recursive] Error 1Using gcc 4.8, but also tried earlier versions.I know there are pre-compiled Mac binaries around, but I would rather conquer this probl<rest of post truncated>

### Reply 9:
I am using latest cgminer to solo mine on testnet and I think there is a bug with handling the testnet difficulty. After no block for 20 minutes, testnet difficulty drops down to 1.0, but cgminer still requires work of previous (high) difficulty (12.3K now).>bitcoind getwork returns ""target"" : <truncated> getinfo returns ""difficulty"" : 1.00000000Is this a bug in cgminer?

### Reply 10:
Hi I see there is support for nf2 and nf6 could you add support for nanofurys devices that are chained together as I have 5 nanofurys chained. And also to set the bit speed of each individual bitfury chip. This is possible in bfgminerThanksPaul

### Reply 11:
Usual story with hardware I haven't seen before: I'm happy to take patches, but I cannot write the code to support them without the hardware myself or suitable sponsorship.

### Reply 12:
ckolivas I would really appreciate an answer to this question.As far as I know this is not something asked before and could prove <rest of thread truncated>
","[
  {
    ""hardware_name"": ""bi*fury, hex*fury and OneString miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitburner Fury boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""nanofurys devices"",
    ""hardware_is_owned"": true
  }
]"
21046,"Date: 2016-05
Topic: Gridseed BTC Mining Issues
### Original post:
Hoping someone with Gridseed 5-chip device can help. I can mine LTC no problem but when trying to use any cgminer for bitcoin mining, I get a high level of LW (Local Work) completed, but nothing seems to hash back to the pool.The error I am seeing upon running in debug mode is the following:GSD0: GetResults (amt=0 err=-7 ern=110)I am running with the following command with cgminer 3.8.5/cgminer -o <truncated> -u user -p password <truncated> --hotplug=0I've tried every GridSeed cgminer variant out there and seeing what my options are. I'm just testing with 1 right now, but same behaviour with other GridSeed devices.My setup is the following: Dedicated 12V 5A power supply for GridSeed5A 4 port USB hub with only the GridSeed attachedRunning Ubuntu 15.10I would really like to get the GridSeeds working if in fact they can mind BTC at 10Gh/s and LTC at 300kh/s

### Reply 1:
Given that most current or recent ASIC are measured in TERAHASH/s (1000 GH), there really isn't much point to trying to mine Bitcoin on the old Gridseed GC3355 based gear like the Orb. Even if you got them working on BTC you'd be putting a lot more money into the electric to run them for a day than they'd mine in a year (unless you have FREE electric, then it's STILL a ton more profitable to stick with mining Scrypt).They CAN be profitable - BARELY - if you have cheap enough electric on Litecoin for now.

### Reply 2:
Agreed, it was BARELY even profitable to mine SHA-256 when they first came out, definitely not now. If you don't get free power, then I would say don't bother trying to mine both. Stick to Scrypt. How many miners are you running? It could be your power supply isnt powerful enough to power the BTC mining so thats why it is throwing errors.

","[
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    ""hardware_name"": ""Gridseed 5-chip device"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""cgminer 3.8.5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""12V 5A power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5A 4 port USB hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GridSeed"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ubuntu 15.10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gridseed GC3355"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Orb"",
    ""hardware_is_owned"": false
  }
]"
22450,"Date: 2018-03
Topic: It is possible to turn on my antminer remotely?
### Original post:
I have an bunch of antminers s9 and I want to be able to turn in on remotely in case of power loss, there is any way to do this through software or I have to buy a smart plug for each asic?

### Reply 1:
Antminers always come back on as long as they have power so they typically recover themselves after a power failure.

### Reply 2:
You are right, Thanks

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""smart plug"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asic"",
    ""hardware_is_owned"": false
  }
]"
3718,"Date: 2014-09
Topic: CLOSED] ASICMiner Tube Group Buy #2
### Original post:
Congratz!

### Reply 1:
Has anyone had this happen:Put unit together, powered up with power supplies that had been running another tube for about two weeks, about 10 minutes and POP!Now the first tube is back in that spot hashing nicely. The one with this bad chip is elsewhere hashing on three boards. Does anyone have any experience with the RMA process?

### Reply 2:
If you bought from Canary PM him and send him the board. I just got a bad board back he sent in for me and was a pretty quick turn around about a week 1/2 or so.

### Reply 3:
PM'ed and E-mailed yesterday, and haven't heard anything yet. He is most likely just busy.

### Reply 4:
Still have not heard anything at all. Starting to get worried. Maybe he is on vacation?Sent E-mail to <truncated> twice.Sent E-mail to <truncated> got any spare chips? Looks like I am going to have to fix this myself.

### Reply 5:
In a PM he told me he is unavailable until late September.

### Reply 6:
Friedcat has a boatload of chips left. It wouldn't be that difficult for him to throw a few in an envelope and ship them to you... and it couldn't hurt to ask.

","[
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  {
    ""hardware_name"": ""power supplies"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
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]"
13538,"Date: 2016-11
Topic: Best software to manage mining farm
### Original post:
Please can anybody tell me the best software to manage a bitcoin mining farm?I need it for my new bitcoin mining farm setupThanks

### Reply 1:
Hi,Awesome Miner (web site, forum thread) is of course my recommendation. It can manage and monitor a large number of miners.Will it be a large amount of Antminers?

### Reply 2:
it is for my own private biz the will be (100 Antminers)

### Reply 3:
Thanks for the information.In addition to all general monitoring and management features, Awesome Miner can also setup privileged API access for all your Bitmain Antminer ASIC's at once. Awesome Miner also provides other Antminer specific features like set and schedule frequency changes, display of both Antminer PCB temperature and chip temperature, plus customizable rules that can be triggered based on these temperatures. You will find more details on the web site.

### Reply 4:
I'm thinking about to get awsome miner for my farm as well, atm there are 7 s9-s but I'll expand is up to ~50, first I need a hoat computer on site. Is it also good for GPU mining? ATM I have lie 90 GPUs and want to expand up to ~500

### Reply 5:
for sure Awesome miner <link> till Minera <link> new version comes out then well see .I use both one is a very good controller while doing stuff the other one does but each has it's use over the other .

### Reply 6:
as I guess both softwares need client PC on site right?I have mining farm outside town and there are only miners and firewall, the cheapest solution will be to get VPN router I guess

### Reply 7:
With the New Minera you don't need any VPN and you can place everything inside a DMZ with firewalls, you only need a system with access to the internet (only output, no input, no NAT, no VPN).Place your system in your LAN, install the new Minera Client and you will control everything from a public web address (via mobile too).Please PM me if you are interested because I need beta testers (we are currently in Beta).

### Reply 8:
PM sent

### Reply 9:
Do we have some other mining options for large farms aside from Awesome miner and Minera out there?

### Reply 10:
I guess we don't and I wonder why bitmain doesn't provide their own soft, some of us are even willing to buy it.

### Reply 11:
Came here to ask this question for one of my future ventures. Thank you for the suggestions.Had an eye on Awesome Minor.

### Reply 12:
There's 2 parts to this:One is playing with the settings, checking them and generally messing around with miners.However, the other is managing the pool <truncated> the pool connection should be done running one (or more) proxies.Basically setup a few proxies and point all miners at them.You don't want to be messing with pool settings on each individual miner each time you want to change that.I doesn't matter if you can click on something that will then go and change every single miner, you want every miner to go through a proxy, so that you decide at one point (well as many points as proxies you setup) where you are mining and mine more efficiently.A proxy means that you have the best latency to the pool since all the miners talk directly to the local proxy for their work, but the proxy only talks to the pool once each time new work arrives and for each share sent back.Be sure you run a trustworthy proxy - some of them don't work and withhold blocks.I of course recommend ckpool proxy - <link>

","[
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    ""hardware_is_owned"": true
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    ""hardware_name"": ""Bitmain Antminer ASIC's"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9-s"",
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    ""hardware_name"": ""GPUs"",
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]"
11178,"Date: 2022-07
Topic: Whatsminer M21S Fan Speeds increased by 2k
### Original post:
Hi forum, does anyone have any experience with whatsminer M21s fan speeds? I've been running my miner in low power mode, for about 9 months without issue, auto fan speeds were stable at about 4500RPM. For the past month, the fan speeds have been stable at 6200RPM. No change in the environment, ambient temperature, or board temperatures (~55, 59, 64c). I checked the fans, nothing blocking intake or exhaust fan and have restarted the unit. After its normal 5 minute startup cycle the fans slowly climb up to about 6200 RPM and stay there.Any suggestions?

### Reply 1:
I wonder if you solved this problem later? Normally, Whatsminer's M21S fan can up to about 7000 RPM, so 6200 RPM is not too high. It may be that the voltage or current of your power supply has changed at that time, so the speed has increased. If you want to keep it at 4500 RPM, I think you can choose to replace the lower-performance fan or use a voltage regulator.

","[
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    ""hardware_name"": ""Whatsminer M21s"",
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  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""lower-performance fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""voltage regulator"",
    ""hardware_is_owned"": false
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]"
23162,"Date: 2019-12
Topic: Need Antminer s9 serial connect to eliminate NEW VIRUS!!!
### Original post:
Hello guys!We have virus which decreasing hash rate and steal it.Can anybody help how to connect to Bitmain Antminer S9 Miner via CP2102 USB/Serial bridge? (Virus is blocking SD card flashing)How to erase existing infected software on board and flash it with new firmware?Thank you in advance for help! Hope this virus will avoid you!

### Reply 1:
Do you already have the CP2102 bridge and have you wired it correctly? GND = GND, but TX and RX need to be switched. Also be careful.. GND is the middle pin on the xilinx board but not on the USB.I used to have the chinese version of the program. I can try to find it if you really need it, but you can most likely fix your issue with the suggestions provided above.

### Reply 2:
Just to make sure, when you are trying to flash from SD, you're moving the jp4 jumper into the other position?On a side note, check on size and hash for /usr/bin/ntpd , some viruses I've seen overwrite that file with the payload.You can also run ""top"" to see which processes are taking cpu/memory and compare those size/hash against the normal.

### Reply 3:
How did this virus infect your miners? Did you ever change the web and ssh passwords?I don't think a virus can block jp4 jumper to boot from sdcard. Did you ever try booting Braiins OS? This should work without fail.

### Reply 4:
Or you control board is not reading SD card because your SD card slot from the control board is full of dust. Try cleaning it with lacquer flo and remove the dust and resold the SD card terminal this mostly solve my issue in other devices. So possible it might also work in s9 miner.Never heard that there is a virus that can prevent you from flashing even other devices through SD card.Anyway, since you mention about usb and serial maybe this thread is what you're looking for check this <link>

### Reply 5:
I doubt the accuracy of this statement , not specifically denying the problem just doubting the cause.In most cases any miner virus won't be really able to lock you from SD flashing , have you flashed any miner with an SD card before ? Just want to make sure that you are not making any mistakes.You should also check your pc for viruses, there is a good chance that whichever virus affecting it sits on one of the pcs on your network.

### Reply 6:
Indeed, not virus but the controller's nand flash storage can get damaged. This is why its useful to test with Braiins OS booting from the sd card with jp4 jumper moved.Bitmain solution simply tries to (blindly) reflash back the firmware. If this nand storage is damaged no amount of reflashes would do anything.

### Reply 7:
i can confirm this is virus.first of all: SD flash, restting in any way doesn't helps. all infected miners try to communicate with each other with 123 port. all infected miners goes to F2pool, antpool and btc.com AND 35.186.233.235:443 which is google drive IP, (first miner goes here). bmminer hash isn't changed.i don't know how to remove the virus, but you can get back your hashrate with two solutions:1. get into miner (over ssh or comport) , change the name of bmminer and run manually.2. block all IPs that miner goes to from firewall, (this solution build up the ram so you have to restart the miner every hour or so).3. there is asicdip custom software which says it blocks the access for this virus, but didn't tested it and it takes 2 %, and its not for me.will update if I will find solution.

### Reply 8:
No there's no virus for s9 miner possible there is someone can remotely access to your miner if your miner has open ports and never change the SSH root and password there is a possibility that they can remotely access your miner. That is why Bitmain release a 2019 firmware to prevent these issues.If you have this problem the only solution that I know to remove this is by flashing it through SD card and the change your SSH root and password so that no one can access your miner.If hackers have access to your miner they can manually update the firmware to their modified firmware where even hard reset the miner the result will be the same as yours.So you should change everything from your port to SSH access credentials before you connect it to the internet.

### Reply 9:
when you get the virus, it doesn't allow you SD flash, you can change the password for ssh, but it doen't matter, it's there even after flashing software from web.ssh wasn't a problem to begin with, in my network only one IP can access to 22 port.there IS virus for s9 right now.steps i've done so far:1) i isolated the one miner from other miners, tried flashing with SD card, doesn't work. tried flashing with different firmware from web-interface, doesn't help, Hard reset either.2) blocked all internet access from firewall, tried step 1. opened internet access, virus is still there.3) took miner to different location with different ISP/IP different network <truncated> network was infected)<rest of thread truncated>
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    ""hardware_name"": ""Bitmain Antminer S9 Miner"",
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  {
    ""hardware_name"": ""CP2102 USB/Serial bridge"",
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    ""hardware_name"": ""SD card"",
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    ""hardware_name"": ""xilinx board"",
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    ""hardware_name"": ""USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card slot"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card terminal"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pc"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller's nand flash storage"",
    ""hardware_is_owned"": false
  }
]"
19790,"Date: 2014-09
Topic: Dualminer USB DMU1
### Original post:
Hello i am new to mining and i have been reading post but can't find help on this miner i just want to mine bitcoin not LTC i have a dmu1.1ctb0701100 minerand i cant seem to get cgminer or bfgminer to find it and wean i do get it up useing cgminer it useing BTC: //./COM5 AND LOADS BUT LOOKS LIKE NOTING IS HAPPENING I GET A HASH RATE OF 250.Mh/S A:0 R:0 NW:0 U:0.0/M WU:0.0/MTHE COMMAND LINE I AM USEING IS cgminer.exe -o ------- -u ------ -p ANY -S //./COM5 --dualminer-pll 100 --hotplug 1 I REMOVED THE USER NAME ^^^ so i dont see it geting anything from the pool and this is a test pool i tryed noting.. i and change the ppl number to get i higher Hash rate i been able to hit 2/Gh but i dont think its working right ?is any one is useing this model miner and has some help i am illing to use bfgminer or cgminer i just can figure out what i am doing roing i read the readme.asic and this miner is not in the list don't know what to do now Thank you so i found that if i add --dualminer-btc ## to the command line it works i also looked up the specs on the miner and i cant seem to find the hash rate some say kh so i decided to clock it up to abot 250Mh/s and see how long be for it dies i did o<rest of post truncated>

","[
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    ""hardware_name"": ""Dualminer USB DMU1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bfgminer"",
    ""hardware_is_owned"": false
  }
]"
21162,"Date: 2016-10
Topic: HELP - JUST BOUGHT 3x Bitmain S9's - Fan Mod for Noise/Heat and/or Underclock?
### Original post:
no fan mods . some down clock if you have the older firmware that allows it.this is decent stuff.<link> thread<link> can make variations of the tent I made.ie smaller shelf then I used.

### Reply 1:
Thanks for replying to both threads! I see what you did... I guess I could get a small shelf and do basically what you did on a smaller scale. Would I wrap this around my duct (pipes) too?

### Reply 2:
It can also wrap around duct pipes and duct work.If you use it with silver tape and staple guns along with down clock if your s9 allows for down clock.The sound will be reduced quite a bit.

### Reply 3:
You should just undervolt your S7 not underclock them and it'll reduce the heat/noise. If you keep them under your bed, make sure they don't have any trapped heat which might start a fire.

### Reply 4:
1. Undervolt? What does that exactly mean? I thought you weren't supposed to underpower the S9's...2. Are you serious?! I'm not keeping them completely isolated - there is airflow - or else the boards would overheat, but an actual fire before the S9's auto-shutoff at 80C? Is that possible? What if I get some fireproof material to cover the S9's (around the material that was suggested earlier that I already ordered) in a dual layer ""tent""?

### Reply 5:
Ok sorry to create a new thread but I have 3x S9's on the way and I need help with noise & heat. I will be running EVGA-1600 PSU's (Platinum) on each of 3 <truncated> SETUP: For context, I'm running 4x S7's in a dorm right now under my bed and they're decently quiet (with fans and underclock). However, I heard that the S9's are 5-7db louder (stock configuration). Here's my setup:2x separate 15A/120V circuits (front/main)2x 15A/120V on a SINGLE circuitI've messed with some S7's and have been able to run them continuously underclocked at 550Mhz/475/450/400 respectively yielding 4.7Th/s, 3.3, 3.0, 2.7. I plan on building a duct to expel any hot air out the window as this is overwhelming at the moment. Fans are between <truncated> didn't consider noise when I got the S9's. So a few issues:- Heat: shouldn't be an issue after my duct is built; can vent out the window; we have A/C.- Electricity: should be fine as well; got my PSU questions solved already- NOISE: What's the best way to deal with this? Insulation? Aftermarket fan mod? Underclock + Fan Underclock? All of them? They would all be going under my bed to help a bit with that.How loud are the S9's compared to the S7's with insulat<rest of post truncated>

### Reply 6:
Wait so what would be the extreme circumstances under which S9's could catch fire? There'd have to be no ventilation at all? Or would some airflow with a duct going out the window (exhaust) along with vented intake be okay?

### Reply 7:
I want to set up a new mining center in India through BITMAIN AntMiner S9. I am totally new to all these stuff. Shall I have each and every information about the best mining hardware and all it's like stuffs PSU and other things. I have many questions for this. I am non-technical person. I will be thank full to you for assisting me regarding me. Any other specialist in touch with you, also you can suggest to ask him or her such guarding questions. Your every help for this setup will be counted. My questions are:what type of internet connection needed to mine through S9? How much 1MBPS connection speed enough or need rather more for this? I want to install multi S9 Hardware and i am totally new to this thing.Does this S9 Hardware available on Amazon contain any display system? or it is needed to attach computer or laptop?At present Own i5 5200 CPU Lenovo laptop. Does S9 have Computer attached in built?Can you send me pictures of your setup to my email?My email is <truncated> will be very much thank full to everyone answering my questions.Ashok gadhiaWhat else thing needed with S9 Hardware along with PSU?

### Reply 8:
Internet shouldn't be an issue for miners, as they require virtually no internet; latency has a slight impact on accepted shares, but it's usually no big deal, although i recommend 1mbps per ~10 miners. You can buy an ethernet adapter on your laptop and link miners up to it; that's the only way to attach it to a pc easily. Splitters should also work well if you do need them.

","[
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    ""hardware_name"": ""Bitmain S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""EVGA-1600 PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Lenovo laptop i5 5200 CPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ethernet adapter"",
    ""hardware_is_owned"": false
  }
]"
23772,"Date: 2021-11
Topic: Does anyone have expereince with the Cheetah F3
### Original post:
I can hardly find any info about these miners

### Reply 1:
What do you plan why you are looking for these miners?Do you have this miner and looking for a way to flash it?This miner is not common and only a few people have this miner. Why not try to go on cheetah-miner.com it seems that is their official website. Or if you are looking for the firmware to flash this miner they have a firmware here <link>

","[
  {
    ""hardware_name"": ""Cheetah F3"",
    ""hardware_is_owned"": false
  }
]"
9105,"Date: 2015-05
Topic: bitmain PSU
### Original post:
any thoughts about bitmain's announcement of their own branded PSU?

### Reply 1:
Some of them are expressed in Bitmain's announcement thread for the PSU.

### Reply 2:
thanks....I was surprised that a thread hadn't been created. Of course, as soon as I posted this one I found the main thread.

### Reply 3:
You can self lock threads with the button bottom left.

","[
  {
    ""hardware_name"": ""bitmain PSU"",
    ""hardware_is_owned"": false
  }
]"
20757,"Date: 2015-11
Topic: Aitminer not mineing and not beeping
### Original post:
Could we have some screenshots of your webpage?Also is your miner (physically) showing any led lights? This may indicate a problem. (Or two)So many things could be wrong, be more discriptive about exactly what is going on with everything in and out of your miner or nobody will be able to help you.

### Reply 1:
ta very much as i say any help would eb usefull had trubel in the past that i managed my self but nothing like this adn i have probs been a bit sparing with the details but (1) no red light diisplaying on the miner LCD display on my miner displays the ip adress 0 hash speed and temp i his unit is an S2 unit so inside of the unit i can see some stedy red light and a blinking blue ligh but i not very sure is this is very helpfully information. (2)<link> <link> <link> un sure what you mean about everying comeing in and out of my miner dont have a fancy set up this miner is conect to my internet via a switch connected to my hub as i say was wroking until this morning were mineing has stoped. therefor i power down and rebooted the unit at wich point it did not start to mine so i performed a reset of the whole systems and started from scratch with my backup pool to make sure not and issue with the pool i am useing, i pluged a pc in to the same switch as the miner to cheach that i could correctl acess the internet which it could hopefully this is a bit more usefull informatiuon

### Reply 2:
Wow, it actually sounds like your S2 is dead.Try a factory reset. Hit the button on the bottom left of the LCD screen holding it down for 3 seconds. A red LED should blink once per second. This will revert your miner to original settings. If that doesn't work try this, though I don't know to what limits this might reach; (I've never had this problem)<link> that doesn't yield results try find exactly what component/s have failed and see if they are replaceable, there are several ways to go about testing individual components of the machine. (Google is your friend!)-Griff

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S2 unit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""LCD display"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""internet switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""pc"",
    ""hardware_is_owned"": true
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]"
12958,"Date: 2014-02
Topic: Need advice with big local network for mining.
### Original post:
Hey guys Need ur helpsWe will make big local network with mining pcs We will use BAMT from USBFor main control PC i need some Debian Unix distrowith Apache2 with enabled mod_rewrite libapache2-mod-php5 php5-cli PHP 5.3+ php5-curl (for notifications with rapidpush and/or custom post) php5-json php5-sqliteAlso with some additional software to controll my all pcsNeed some advice guys or i need somebody who will consulting me for donate .

","[
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BAMT from USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""main control PC"",
    ""hardware_is_owned"": false
  }
]"
20343,"Date: 2015-04
Topic: ROCKBOX RMINER-32
### Original post:
I got one of these. Plugged in. Originally fan spins round but could never get blue light or connect to pool.Out of nowhere one day blue light comes on and hashes lovely 36ghs for about a day. Then fan stops spinning and can smell slight overheat. Fan has never spun again and may as well be a brick. Obviously it overheated but has anyone else had this?What a waste of money if they are that easy to overheat in a day. I don't they are the best made things.The above is not my miner or laptop but pretty much how I had it set up.Many thanks. Tom

### Reply 1:
your gear most likely is fine. most likely your power brick is dead.read the power brick specs are they 5 amps and 12volts dc ?

### Reply 2:
How old was your miner ?

### Reply 3:
maybe must reinstall drivers, for gridseeds must do something to charge usd drivers and miner go available, using Zadig usb port.maybe you have a cortocircuit, if fan cables are burned becose they are touching the core, this can be a reason for fan stop.

### Reply 4:
I had 3 of these connected to a single Raspberry Pi for well over 6 months. I had a single ATX supply for the 12V to these, and the 5V to the Raspberry Pi. It ran un-touched for those 6 months at a steady 96+ Ghash. Supply good power, and a little ventilation and they will run fine, in my experience.

### Reply 5:
I had 3 of the big ones on a rasp pi and did 390 gh rock steady using a seasonic psu and ran the rasp pi off a 5 volt cable on the same psu.The power bricks and not run this gear 24/7/365 unless they read 6 or more amps at 12 volts.I used to have some 10 amp 12 volt bricks for running gridseed blades they ran the little round ones you have very well.

### Reply 6:
Well that sounds promising. I will try the power brick on something else and try another source. The only thing against your theory is the blue light still comes on when plugged in. Just no spin Thanks

### Reply 7:
Brand new. It had sat on my shelf in the box for a few weeks first but pretty sure no harm came to it there.

### Reply 8:
Drivers all working fine. The biggest joke is for one week the fan span fine and could not get it to hash! within a day of blue light and hashing dies This cortocircuit sounds more likely and I think something has burnt out in it. Unfortunately I am techy on computer but would not know where to start with fixing wiring/circuit boards etc. Thanks

### Reply 9:
Yeah this is what I thought, they have good reputation if not a little fragile. My supply was 12V too. It must have been damaged in the shipping. I have picked it up a few times etc but in now way to damage it. Well I guess if it's dead I got nothing to lose but open it up and try and fix it! Thanks everyone for your comments. Much appreciated.Tom

### Reply 10:
I'm gonna go through every amp supply I have in house that is similar volts and see if I can get the f*cker to spin

","[
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    ""hardware_name"": ""ROCKBOX RMINER-32"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power brick"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATX supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""seasonic psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""gridseed blades"",
    ""hardware_is_owned"": false
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]"
23237,"Date: 2020-04
Topic: Double insulation
### Original post:
AFAIK no miner is double insulated. Frankly, just make sure you have a solid connection to the power distribution PE ground and that your neutral is solidly bonded to it. Do that and you are good using a normal class-C or D thermal/magnetic breaker.

### Reply 1:
Hi everyone,I was wondering if anybody here knows if the bitmain, canaan, ... equipment is double isolated? If not, I can throw out my type A RCD. It doesn't like those 3th harmonics very much, and would be complete useless.thanks,Lars

","[
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  },
  {
    ""hardware_name"": ""power distribution PE ground"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""class-C or D thermal/magnetic breaker"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitmain"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""canaan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""type A RCD"",
    ""hardware_is_owned"": true
  }
]"
6256,"Date: 2013-09
Topic: Yifu, Please dont ship my order! Just refund!
### Original post:
Delaying so long a time, and ignore my refund request, is essentially a robbery!

### Reply 1:
When did you order?

### Reply 2:
In April

### Reply 3:
Any response yet?

### Reply 4:
So now the chips are on their way finally, but people that have requested a refund were ""conveniently"" too late??Wow...So sowwy, we aweady shipp you order....That is seriouly messed up.

### Reply 5:
IF you asked for a refund before they were shipped, can you not just send them back if they arrive at your doorstep? Yifu??

### Reply 6:
Wow, what a clusterfuck this company is.

### Reply 7:
Can you honestly say you are surprised? Looking at the past few months, I'm not. There are a lot of inept inexperienced kids/con artists running these companies and I suppose there are many factors that we are unaware of, but still... Communications are sparse and recourse has been minimal.

### Reply 8:
I received the refund.thanks yifu.

","[
  {
    ""hardware_name"": ""chips"",
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  }
]"
21143,"Date: 2016-10
Topic: ASIC AVALON6 help needed.
### Original post:
I bought a Avalon6 miner it did not come with the 4 pin cable that connects to the usb dongle that I also did not receive. I am unable to locate these items anywhere. I have also been unsuccessful trying to put these items together myself. Any help would be appreciated.

### Reply 1:
The dongle is not sourceable other then from Avalon.But I might have one or a link.

### Reply 2:
If you have one how much will you charge me for it? I havent found a link that actually was still valid. I guess it has become outdated much I appreciate the help.

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    ""hardware_name"": ""4 pin cable"",
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  },
  {
    ""hardware_name"": ""usb dongle"",
    ""hardware_is_owned"": false
  }
]"
3490,"Date: 2014-06
Topic: [CLOSED] Group Buy Antminer S2 $1650.- May 25th - 150/150
### Original post:
GB Members.This is the list of the orders <truncated> you completed the payment and your order is not in the list contact us immediately RegardsJuan

### Reply 1:
wow, i'm the last.order #1075

### Reply 2:
I paid Yesterday #979 whats your email address I an send a proof of payment.

### Reply 3:
A.R.Sent to to me to <truncated>

### Reply 4:
All the orders I listed before has been processed and added to the shipping list.Bitmain Tech Ltd has the list and shipping team will start working now to ship all in time in May 25th.Orders not included in that list because we don't receive the payment yet may be shipped on May 25th or the day after we will do all we can to ship it same day.Shipping team will send me an spreadsheet with the UPS tracking numbers on May 27 and I will update everybody with that information as soon as I have it, please don't start asking me for the UPS tracking before that day because I will not have it.USA/Canada customers expect to start receiving your units on May 29-30, customers in other countries may take until June 2nd if in June 2nd still not receive your overseas orders please contact me and UPS for an update.For customers that ordered Hosting Service also in case we receive it at our hosting facility on May 29 we can try to install in on May 30 but in case we received later or a delay on our side may take until Monday June 2nd to complete the setup of your units. Please send us your pool info in advance so we are ready to setup your miner fast.In case someone has problems with their units li<rest of post truncated>

### Reply 5:
Hi JuanI'm not on the list, have emailed you. Payment went out yesterday.

### Reply 6:
Any chance of getting in for 2 units?

### Reply 7:
No sorry I hope we can include you next time.RegardsJuan

### Reply 8:
Hello BiffaOrder #?Juan

### Reply 9:
Hey Juan,Just found it it takes my bank 4 days to do an international transfer to a US bank I know you want to get these closed off, rather than refunding me can I send you 3 BTC as collateral until the money clears into your account so I don't miss out?

### Reply 10:
I'll look into the next group buy as well.Thanks.

### Reply 11:
Juan,Thank you! You are the man and your wife is a woman!

### Reply 12:
Hope everyone gets their miner in good condition.When is the next group buy, Juan?

### Reply 13:
Someone please ban this account, trying to fleece innocent people.Yeh OK topminingcontraKts with a KYou have just been sent a personal message by topminingcontrakts on Bitcoin Forum.IMPORTANT: Remember, this is just a notification. Please do not reply to this email.The message they sent you was:Hi,Thanks for the interst in our Antminer S2 group buy -<link> Group buy is launching today/tomorrow so good timing on your side We will have a stock of 50 miners arriving Tuesday but as always will sell out fast with 19 units already reserved.Should you wish to purchase one the current price is 2.98 BTC inc express shipping.Payment address - (I took it out so no one even mistakenly pays it)After payment please pm me the transaction I.D and your shipping address.Kind Regards.Juan.

### Reply 14:
Thanks for the update Juan. It's probably a good thing that I don't have the tracking info yet, it's always just a tease hitting refresh button all day! Will check back Tuesday.

### Reply 15:
Congrats guys you got a good deal. Sorry I missed out after the 100 ran out, would have much rather had 2 of these than my SP10 but I was trigger happy when you ran out!

### Reply 16:
I would like in on second group buy if there is one.

### Reply 17:
Havent got tracking yet?

### Reply 18:
Let's wait May 27, but I'm curious, why not May 26 ?if they ship may 25, they should have tracking number on 26.

### Reply 19:
UPS MyChoice shows that my units shipped on May 24th, have already departed China, and are due to be delivered tomorrow on May 27th.Nice!

### Reply 20:
Great news !

### Reply 21:
Hello Juan, we placed an order for 3xminer, payd friday, we're triyng to get in touch with you to make sure everything is allright and also for the invoice (for customs) but we got no answers to our email, i will pm it here, please have a lookcheers mate

### Reply 22:
There is a tracking # in my account already !

### Reply 23:
I got tracking. I wish I would've bought more though. It looks like bitmain is not lowering their prices yet.

### Reply 24:
All the units payed before May 23 00:00 were shipped according the schedule, and most of them will be in customers hands tomorrow.We are sending the very last units today for the customers with late payments.We sent e-mail with all the tracking numbers please check your e-mails.RegardsJuan

### Reply 25:
I've got the tracking.It seem they send May 24th.

### Reply 26:
Order #979 was placed on May 20, 2014 and is currently Shipping.Order Updates Friday 23rd of May 2014, 08:38pm Shipping List 1Nothing in my emai<rest of thread truncated>
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    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""SP10"",
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]"
3141,"Date: 2014-03
Topic: [Group Buy] Gridseed Scrypt ASICs {NEW: Order Non-Hosted Units & Custom Cables}
### Original post:
There's not much interest in this compared to some other options and competition has got more intense with other Gridseed hosting options popping up. I don't really have a lot of money to secure a bulk purchase with Gridseed to the lower prices and order directly, so I'm sitting on somewhat unfair grounds. So, I have been thinking of other ways I can improve this offering.In an effort to remain competitive, I have decided to take a gamble on the hosting costs and the farm reaching full capacity. I hereby eliminate the large monthly fee structure that has been sitting in the OP for a couple weeks that was dependent on the number of units hosted. The hosting fee is now a flat $4 fee per miner, no matter the number of units hosted. The first month is still free. Thanks for those of you that have shown your support thus far by ordering! I hope you like the fact that the fees are now much lower when less units are hosted. Refunds are available at any time until the order is made this weekend if not.I will be offering the option to host other mining equipment, so reaching capacity does not depend on interest in Gridseed mining equipment. If you are interested in hosting anything else con<rest of post truncated>

### Reply 1:
Well Coinhoarder, I am not sure why you aren't getting more interest in this. You have been around here a while and have good trust, which is more than what can be said about most gridseed resellers. I admit, I was a little weary about such high hosting prices, but will happily pay the new rate and keep the miners with you.I have been referring anyone I can to this GB as I have been very happy with it BTW.If you are unable to secure any more orders by the weekend do you think you will be shutting this down? Is there a number your looking at to keep this open? Just interested as I may start looking at backup investment ideas if this one falls through.Thanks for your diligent and good work, its nice to have a competent GB leader in the crypto world. Hopefully you can continue to make this thing grow and expand, please let me know how any of us could help you if you need it.Thanks,DebitMe

### Reply 2:
Thanks for the kind words, I am working really hard to make this group buy a success. I have crossed the point of no return with this group buy by buying so many accessories and renewing my lease, so I am determined to make this a success. I have sourced all the accessories from alternative sources and everything is arriving this week. Some things arrived today, the rest are set to arrive tomorrow or the next day. This includes all components of our custom ATX cables, mini usb cables for the gridseeds, silver rated ATX PSUs, Pis with cases and 8 Gb cards, USB hubs, standoffs (although I may have changed my mind about stacking so many units and the time it would take to do it). By ordering the cable components early, I will be able to make them by the time the Gridseeds get here. I need to strip wires, install barrel plugs, and shrink wrap the cables, so it is good I have some time to do this. I must disclose the only thing I am worried about is finding out that the USB hubs I ordered don't work well with chaining Gridseeds on Pis. Pis are finicky with USB hubs. Worst case scenario I will give a refund for the USB hubs and ship out the units. I will suggest a USB hub that works (I h<rest of post truncated>

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    ""hardware_name"": ""Gridseed Scrypt ASICs"",
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    ""hardware_name"": ""accessories"",
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    ""hardware_name"": ""custom ATX cables"",
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  },
  {
    ""hardware_name"": ""mini usb cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""silver rated ATX PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Pis with cases and 8 Gb cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB hubs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""standoffs"",
    ""hardware_is_owned"": true
  }
]"
19031,"Date: 2014-03
Topic: Need Help with Unresponsive Avalon 2
### Original post:
Hey guys! i'm new to this forum and was hoping somebody could shed some light on my serious issue. My Avalon 2 200 gh/s miner was doing a software reset, and my buddy turned off the power switch to my outlet thinking it was my light switch. Anyways, after that happened I have lost my ability to connect to my Avalon unit via it's interface and the Avalon no longer registers as a device on my router. It powers on and the status light is solid green and the Ethernet port device is solid blue.I think the firmware is corrupted but i have no clue on how to repair it. Any help will be greatly appreciated. Thanks in advance!

","[
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    ""hardware_name"": ""Avalon 2 200 gh/s miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  }
]"
19211,"Date: 2014-04
Topic: Newbie! Help!!!
### Original post:
Good mourning guys, so i recently bought an antminer s1 from ebay brand new, it worked great for a few hours and just quick hashing. ive checked everything i can think of. i can still connect to the antminer, the control board leds lightup but not the green one on the outside boards. anyone that can help me i would greatly appreaciate it. thnkyou

### Reply 1:
Do you have 3 different mining pools? Sometimes one will stop working. Also in your configuration settings hit save and apply, sometimes for what ever reason, you need to do that a couple of times. Check, check and double check your LAN cable. If you are using CAT 6 cable it may not work, CAT 5e works great. Hope this helps.Rob

","[
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    ""hardware_name"": ""antminer s1"",
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  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""LAN cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CAT 6 cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CAT 5e cable"",
    ""hardware_is_owned"": false
  }
]"
10317,"Date: 2017-06
Topic: Noob question about hardware
### Original post:
Hi,I bought my setup for gaming but today I decided to see how bitcoin mining would perform.I tried using CGMiner, both graphics cards, R9 390x's in crossfire where maxed out and I was getting a speed of 6.5GH/s which seems very slow seeing as USB miners can do more!I understand that hardware is designed for specific things, these being gaming, just wondering if I was doing something wrong or getting specific hardware is <truncated>

### Reply 1:
Jake!!Mining Bitcoins with GPU's are a thing of the past...

### Reply 2:
I guess I really am a noob! What's the tech everyone is using now if not GPU's? And why are so many people still talking about using GPUS's for mining. Thanks.

### Reply 3:
This section is for Bitcoin, and Bitcoin has been way beyond CPU and GPU mining for a long time now. GPUs are still used for altcoins, and if that's the direction you want to go you need to move this to the altcoin section. If you want to mine Bitcoins, only ASIC miners are applicable.

","[
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    ""hardware_name"": ""R9 390x"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""USB miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": false
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18443,"Date: 2013-12
Topic: 10 ASICminer Blade setup with backplane is rebooting every hour.
### Original post:
I have a complete setup I had purchased and setup new from eBay just a few days ago. They are (10) V2 blue boards and came with the backplane and the HP power supply.I'm having a very strange issue. It will mine like a champ for just shy of an hour, then every single blade restarts.Every hour (58:30) to be exact, the entire setup restarts itself (according to the uptime on each). Even single blade on the unit restarts. I originally thought it might be firmware on on the individual blades, but I reset one board independently to see if it would ""miss"" the restart (since they all normally power up at the same exact time the power of turned on) and it still reset with the rest of the blades. The only way it could be the blades is if they are communicating somehow across the backplane, but I didn't think that was going on.So at this point I believe I have narrowed it down to being the PSU. I am familiar with servers, and realize this is just a hot swap power supply for an HP server. I'm wondering if the particular one I have is resetting itself because it's not seeing some other communication from the actual server it's expecting to be plugged into and it's restarting itself in hopes to<rest of post truncated>

### Reply 1:
A guy on IRC Slush's pool said his was resetting every 2 minutes after he placed all 10 on the back plain. After some testing, they were stable with 7 blades. At which point he shared his PSU. I didnt write down the name of what PSU he had but another member recommended this PSU to him: <link> about as much info as I can give you since i dont own the blades.

### Reply 2:
That's one of the PSUs I bought to try. So, good! I can simulate the 2 min interval reboot, which seems to be part of the blade's firmware if it doesn't sense a connection to any pool it reboots after roughly 2 minutes assuming it's ""dead/sick.""Where it's such a regular interval I have a hard time believing it's lack of power, but it's certainly possible. When I checked the blade's power usage with the kill-o-watt I saw about 650W at full load. I will have to throw it back on and keep an eye on what it does when the unit reboots. I haven't had a chance to catch it in the act yet to see if the PSU has any change in the LED or something like that. There has to be a reasonable explanation for this, even if it's a hardware problem.

### Reply 3:
So for giggles, I'm going on a hunch, and pulling the single card that's not hashing as well. So now the PSU is only running 9 blades, so if the PSU was slightly overloaded, perhaps this will resolve it. Either way that blade's errors % kept climbing pretty quickly over time. When I first fired up the blade it was around 4.5%, as of now before pulling it the errors were up to 7.6% while the rest are between 0.75 and 1.25%.Here is the BFGminer output just after pulling that blade:Code: bfgminer version 3.6.0 - Started: [2013-11-28 00:47:58] - [ 0 days 15:50:59][M]anage devices [P]ool management [S]ettings [D]isplay options [H]elp [Q]uit Connected to <truncated> diff 64 with stratum as user XXXXXXX_BladeBlock: ...82f92e0f #272015 Diff:609M ( 4.36Ph/s) Started: [16:38:46]ST:3 F:0 NB:120 AS:0 BW:[ 57/ 47 B/s] E:446.44 I: 3.38mBTC/hr BS:626k9 | <truncated> | A:20410 R:278+128(2.0%) <truncated> 0: | 9.98/10.18/ 9.90Gh/s | A: 2074 R: 30+ 13(2.0%) HW: 992/.73%PXY 1: | 10.27/10.19/ 9.86Gh/s | A: 2052 R: 22+ 20(2.0%) HW: 1702/1.3%PXY 2: | 12.39/10.15/ 9.84Gh/s | A: 2049 R: 26+ 13(1.9%) HW: 1517/1.1%PXY 3: | 9.34/10.20/ 9.91Gh/s | A: 2088 R: 22+ 14(1.7%) HW: 1549/1.1%PXY 4: | 11.86/10.13/ 9.8<rest of post truncated>

### Reply 4:
I know I'm mostly talking to myself... ... but taking down the one ""bad"" blade didn't stop it from rebooting. So dropped it to 7 blades, to see if it makes any difference. T-minus 30 minutes till next reboot, or maybe not. Thinking I will try 5 next if 7 doesn't work... and frankly if 5 doesn't work, I'm going back to 10, rebooting or not, I'd still rather be mining with reboots than limping along.

### Reply 5:
Someone was posting something in another thread about this being a function if the blade cannot connect to the pool.... I wonder since these are only 10/100 if network congestion could be an issue?

### Reply 6:
Update: Ok, so I FINALLY got to watch what happened when it was in this restart mode.At about the 56 min mark the miners all stop... wattage drops from it's normal 800W to idling at about 340W. It stays there until about 58:30 when it restarts and winds back up again about 20-30 seconds later. So it would appear it's a pool issue... but WHY? In my config I was pointing both to the same config. So now I've change to the primary being my BFGminer and the second being my proxy_miner on the same box... diff ports of course. So perhaps it's trying to switch pools (why I have no idea) and freaking out when the current and new are the same. The two ways I'll kn<rest of thread truncated>
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2721,"Date: 2014-01
Topic: [Open - Ongoin - Free Shipping] AntMiner U1 USB STICKS - US/Canada .053 per unit
### Original post:
So,I just got home from work and have a big box of U1's. I think there was a mix-up at the factory for weight. I had multiple inbound orders from Bitmain (S1's and U1's) as of last Saturday orders. I had tracking for the 3.8 Kg S1's, but nothing for the U1's (18 Kg). I believe they entered the weight wrong for the U1's and looked like S1's inbound. I worked with them this week to fix this and now I understand the mix-up. So that said, I have about 7 orders to box up from last 30 or I had on hand a few more orders in Queue. I am shipping at USPS in about 3 hours (leaving here at 6:30 PM) any orders up until then will be out <truncated>

","[
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  },
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    ""hardware_name"": ""S1"",
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2073,"Date: 2013-11
Topic: [CLOSED][Group Buy] Cointerra Shares ฿2 = 25GH/s [CLOSED]
### Original post:
Oh Thanks. Sorry for that missing guy. (seems you are a bit raged.) Anyway I am looking fwd sorry for troubling you

### Reply 1:
I'll take one share from miner 2. Once you confirm shares are available I will pay immediately.

### Reply 2:
Alright Now we wait patiently Thanks again for all your help waldohoover!

### Reply 3:
Are u going to start another GB in the future

### Reply 4:
In general

### Reply 5:
I hope it's up and running soon!Getting nervous about my BTC4.5

### Reply 6:
I hear ya bro

### Reply 7:
thanks

","[
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]"
4246,"Date: 2012-12
Topic: Other applications for ASICs ???
### Original post:
I've been looking into these ASIC chips from Butterfly Labs and a few other designers. I'm told they're tailor-made for Bitcoin mining. But what I wonder is if they have any other practical application...Let's suppose I drop $30k on BFL's top-of-the-line chip. I mine Bitcoins with it for a little while, but for some reason the mining industry hits a dead end (it is destined to happen someday). Now I'm stuck with this chip that cost me more than most people earn in a year. What do I do with it? Are these ASICs so <truncated> that the chips are useless for anything else? Or could I indeed find other uses for it? My company operates a tech/software subsidiary and we are the developers of a cutting-edge game and simulation engine. A chip as powerful as this seems quite appealing if I could harness its power for calculating physics or processing graphics resources...but is that even a viable option with this mining hardware? And what else might they be used for?Also, what do you suppose the resale value of these next-gen ASICs will be when the mining industry begins to <truncated> my understanding that these ASICs from BFL are going to begin shipping out in two months. Folks tell me the<rest of post truncated>

### Reply 1:
Short answer:The ASICs are application specific and are not useful for anything but BTC mining.FPGAs are field programmable but ASICs are masked in a chip fab.

### Reply 2:
You can use them for decoration on the wall or to test a blender.

### Reply 3:
As others have said, these really aren't useful outside of bitcoin mining. If you had an application which required a double sha256, you could use these, but that's pretty unlikely. Unfortunately, if mining completely collapses, the units you've purchased will be worth nothing more than the intertaining value you can get from running massive amounts of voltage through different components to see how they explode.As far as what's going to happen, my best guess is that the price of BTC is goin to decrease sharply. When ASICs hit, the difficulty will spike, but not enough (in my opinion) to justify as high a price as they are now. Whatever happens, I predict about a 6 month wait time for full returns on the cost of your machine. The early adopters will probably be good to go in 3-4 months.As far as kicking out the casual participants, it's kind of weird here. No longer can the random gamer help mine BitCoins when not gaming, so he's going to have to buy dedicated mining equipment. You'll still have people that only run 1 Jala as a ""cuz it's cool"" kind of thing, but I think many of the coincidental miners who are actually gamers will stop participating. However, you'll still have the h<rest of post truncated>

### Reply 4:
It'd be annoying to have to redirect your space heater towards a live server running bitcoind, and it might be a little noisy, but that's about your best option. 1.5kW space heater FTW!

### Reply 5:
ASIC itself is not a new technology. If you can think of another application where it would be useful, ASICs designed for that particular application probably already exist.It's not like your ASICs aren't going to be useful for helping maintain the network, but they aren't going to be perpetual profit machines.

### Reply 6:
Understood. I've been in software development and programming (i.e., C, C++, C#, x86/64 assembly) for over 7 years now...and I have even more years of general IT/tech experience, mostly in repairs, upgrades and custom-builds. But I am by no means a hardware or chip expert, and my knowledge of cryptography only goes about as far as <truncated> sensitive data and hashing passwords. Ah, and my knowledge of networking leaves much to be desired...my greatest accomplishment in the field was nothing more than a p2p chat application w/ file sharing lol... So please forgive me if my Bitcoin questions seem a bit n00bish...I'm learning about BTC very fast, and I hope I can someday do something to thank/reward all of you for your help and guidance! Any of you guys have some links to share for programming resources related to Bitcoin? I'm interested in exploring the world of Bitcoin-related software development and seeing if there's anything I might be able to do for the <truncated>

### Reply 7:
Lots of uses <truncated> blunt force <truncated> Movie sci-fi propSpace heaterTo the OP. The ""Application Specific"" part of ""Applications Specific Integrated Circuit"" means exactly what it sounds like. The chip is designed to do one thing and one thing only. On one hand that makes it cheaper, faster, and more efficient than using general purpose hardware, on the other hand it means it does one thing and one thing only.In this case the application is performing a double hash of a block header (fix size binary value) where one part of the value to be hashed is a 32 bit integer and you wish to increment it from 0 to 2^32, locating the inputs which produce a hash s<rest of thread truncated>
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    ""hardware_name"": ""space heater"",
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1801,"Date: 2013-10
Topic: Additional voting and major decisions for DZ Miner Cooperative, Round 1 gents
### Original post:
You can vote via PM or public voting. You're free to state your case as to how much or how little overclocking we attempt. We'll step up overclocking to check stability instead of taking huge jumps as far as clockspeed, whenever possible. You just need to vote before...gee, delivery in November, so there's no rush. Please vote or check in with your opinion whenever you have time. Cheers!

### Reply 1:
i vote 10% first week. then do a new vote depending on results. no more then 15% no less then 5%my case for 10% is long term use goal. {24/7/365 =longterm } as it is easy on gear.I ran a lot of gpu's to mine and slight under volt with a bit of core over volt allowed for trouble free running. if we had 5 setups I would say do 0% 5 % 10% 15% 20% 25% and if one dies we have more running. we have 1 chip and 1 board so 99% up time would be better then over clock with a big time crash.

### Reply 2:
Great points Philip. Vote and concerns noted. Thanks for voting.'Tis true we only have 1 rig if we push things too far & release all the magic smoke from our mysterious black box. Also, don't forget this unit is operating in firsttimeuser's house! I think his wife/GF and/or roommates will probably be a tad upset at us if our mysterious black box sets fire to the furniture or whatnot.Besides: We all know what happens to mysterious black boxes once all the magic smoke comes out right?Edit: I'm showing 3 votes on the poll, but I only have 1 official vote so far.

### Reply 3:
My personal opinion is go for overclock but do it in stages. We may be able to abuse it more then we thought originally

### Reply 4:
What no Oil Cooling?

### Reply 5:
Nah man, didn't you hear that the kewl kids are cooling their server rooms with hot air nowadays? <link> firsttimeuser has 24/7 AC and I'm not sure how happy he'd be about 3M or mineral oil leaks all over his home if anything bad happened w/ leaky seals or components.

### Reply 6:
News from Simon Barber on CH Forum: Look forward to a special promotion just for those first batch customers. Launching soon.Lucky us gents!==Also R3 Co-op member -Redacted- bought 2 of my shares for R1 so I can apply them to R3/R4 if necessary. Thanks -Redacted-!I also donated half of one of my R1 shares to one of our fellow R1 members who has some difficulties in life, you & I don't face. So: For Round 1, my share/voting power is down to 7.5 shares. This is down from 10 shares.

### Reply 7:
With the latest news about the B1 promotion: Who's down for doubling our hashrate (100% more) at only 25% more?Place your votes here either publicly or via PM. I'm voting immediately with my 7.5 shares for the upgrade.Cost should be $38-40 per share, depending on shipping.

### Reply 8:
Upgrade

### Reply 9:
Came out to $42-43 per share with shipping when I calculated it in the R2 thread. Shipping was $138 - 187 IIRC w/ my fake order.Gents, I tried PMing everyone but I'm limited to 5 members at a time & I'm starting to fade out here tonight. Here's the DropBox link and ownership updates.Here's the latest ownership breakdown. -Redacted- bought 2 of my shares. Also, I'm donating half a share to a R1 member but I won't list it so as to not call out the member it's being donated to.<link> let me know if you have trouble viewing the spreadsheet or if you have any questions. Thanks!

### Reply 10:
I would pay 42-43 for the upgrade

### Reply 11:
Yes. Question. Why does line 9 get to have their withdrawal address listed in a bigger font when I own more shares? ( )I would go $42-$43 for the upgrade...

### Reply 12:
I'm sorry I didn't even notice TBH. Aren't all numbers the same in the minds of math teachers? Do you suppose they prefer some #s over others?Thanks for noticing my awful spreadsheet editing late last night. What I don't notice, I can't fix cuz I ain't perfect because I use the word ain't. Don't worry, I'll change it during the first miner payout. Edit: Ah! I got it. Political spin: it was merely an abstraction to show that we're all equal in this co-op.

### Reply 13:
I'll set up a wallet tonight for fundraising for the double hashrate upgrade, if you gents want to collect BTC for this.With express shipping, it appears to be $43 per share, using bitstamp rate at time of your BTC purchase or transfer.If we don't raise enough funds in, oh about a month?, I'll refund anyone that paid, with no restock fee.

### Reply 14:
Gents,For those that may have been away or on travel: If you missed the news: HashFast is currently giving Batch1 owners an opportunity to double hashrate at only 25% extra. Est. to ship 1 month after our miner is delivered & it would double our hashrate well before any MPP could kick in at 3-3.5 months. The cost per share would be $43 with Express Shipping AM delivery.Just for Round 1: Here's the wallet I've set up for our HashFast Baby Jet upgrade if you guys want to go for the upgrad<rest of thread truncated>
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    ""hardware_name"": ""board"",
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18556,"Date: 2014-01
Topic: What's the best Bitcoin miner?
### Original post:
I'm relatively new to bitcoin talk but i want to start mining and i was just wondering what the best available bitcoin miner is? or maybe one coming out soon that would be better? Thank you!

### Reply 1:
none!there is no miner worth of buying right now.ones that coming out soon will be KNC Neptune ($10.000) and Black arrow Prospero x3 ($6.000).they are also not worth of buying right now because of all preorders by the time you have it they won't be any profitable. best thing to do is buy some BTC and sit on them or save some money and wait for next generation of miners (5-7th) and be fast when they announce them.

### Reply 2:
Alright, thank you!

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    ""hardware_name"": ""Black arrow Prospero x3"",
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22854,"Date: 2019-01
Topic: T9+ low GH/S(avg)
### Original post:
hello - mining ok was mining @ 10.5TH now 8.2TH. I don't see any reasons for the change. No change to pools, settings or firmware.sjs

### Reply 1:
this could be a problem with your PSU or electricity in general, it could also mean your chips are going bad it always happen.could you post the screen of the miner status, are you getting any xxx or ---?

### Reply 2:
as mikey says they age. very few of these run perfectly beyond 2 years.but some screenshots can help us see what is wrong.

### Reply 3:
Besides posting a screenshot of the status page you should also copy the kernel log as well.

### Reply 4:
no xxxCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel command line: noinitrd mem=496M <truncated> root=ubi0:rootfs ubi.mtd=1 rootfstype=ubifs rw rootwait[ 0.000000] PID hash table entries: 2048 (or<rest of post truncated>

### Reply 5:
ok your kernel log looks very similar to this > <link> , also this guy was having the same problem you have.it turns out t be something with the electricity wiring and/or auto fans. just read through the thread, and keep us updated here too.

### Reply 6:
decided to reboot. hashing back to normal.

### Reply 7:
really?dude rebooting shouldn't need a decision when comes to antminers, i reboot my miners for the sake of it. it's the first thing you need to try to solve any problem, reboot a few times if the problem still there, cut the power, try 1,2 times. if those fail then look for soltuion, but really think of reboot like first aid kid, use it before you do anything.i am pretty sure everyone who read your thread would never imagine that you have not tried to reboot and flush a different firmware. anyway, glad things are working for you, happy mining.

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    ""hardware_name"": ""miner"",
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7070,"Date: 2014-02
Topic: Scalability???
### Original post:
How scalable are these? At 2.5 watts/unit, you could put 600 of them on a standard wall socket (110 volts @ 15 amps).But...What is the CPU load per unit? Per 10 units? Per 100 units?What USB throughput is required? To install 100 of these on one USB port, you would need one Hub to plug the 10 hosting hubs. Does USB 2.0 have enough throughput (consolidating hubs)? I think USB has a maximum of 127 devices per Controller, so 2 levels of hubs should be the max you need.Does propagation delay (through each hub) affect throughput? How about contention problems (100 units contending for communications).So, you scale to 100, 7 Mh/s. How about scaling to 600 (assume you have 6 USB ports on your computer)? That would give you a 48 Mh/s for $48,000. The max load on one 15 amp 110 volt circuit (800 for a 20 amp circuit). Could one computer handle the i/o traffic? BTW: What would be the required internet bandwidth for a 50 Mh/s computer? How many USB Controllers (not ports) does a typical computer have? If you need more controllers, you could use PCI-E USB cards.Note: I have heard that some 10 port USB 2.0 hubs have power problems, can't deliver the full 500ma to each port. Since each dualminer<rest of post truncated>

### Reply 1:
I remember running something like 60 usb asicminers on older dell dimension using asicminer 49 port hub and some others....that was ok. Once you got them all running....but hell if you had to reboot or something where you had to restart cgminer....anyway alot of it is trial and error still or R & D if you like...good luck. good questions too.

### Reply 2:
Do not go USB 3.0 signaling protocol is different, our old devices use USB 2.0 can go 120+ devices, but not if using 3.0 stuff.(some newer computers do not even have pure 2.0 ports anymore) with USB3.0 it gets sketchy, some it works others not.Device amount is lower on 3.0 and W8 also.Try to keep these happy, use USB 2.0 equipment.edit: new info the older asics actually talk using the v1.1 USB speed and spec.So there you go, 3.0 is way off the spec. I think it was nwools or MrTeal that provided the info on the 1.1 bandwidth.Found while designing the firmware

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    ""hardware_name"": ""Dell Dimension"",
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    ""hardware_name"": ""ASICMiner 49 port hub"",
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    ""hardware_name"": ""USB 2.0 hubs"",
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    ""hardware_name"": ""PCI-E USB cards"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""USB 3.0 equipment"",
    ""hardware_is_owned"": false
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12227,"Date: 2013-04
Topic: Ability to set aggression per GPU in Reaper?
### Original post:
I've got Reaper up and running beautifully and it consistently seems to outperform cgminer. I do like the flexibility cgminer gives me in tweaking though.Is there a way to set the aggression on a per GPU basis?For example, my primary display GPU and my secondary GPU are running at the same aggression level currently and the first GPU is getting 10 degrees hotter. The cooling is the same. So I can only guess that since my first GPU is driving the display it is working harder.I would like to reduce the aggression on this GPU only.Is this possible with Reaper?

### Reply 1:
No response yet... cgminer has the ability to control the fans with a target temp. Does reaper offer anything like this?

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    ""hardware_name"": ""GPU"",
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    ""hardware_name"": ""primary display GPU"",
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  },
  {
    ""hardware_name"": ""secondary GPU"",
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20843,"Date: 2015-12
Topic: Bitcoin Community Voting!
### Original post:
Ck or whoever else is admining please excuse me as i didn't know where to put this so i hope here suits...Why is the voting on what happened to being built in to the Bitcoin Core Wallet.Voting about what bitcoin does should be put to the core users at least...We don't want nor need our pools making decisions for us so a vote feature plus a link to an explanation of what we are voting for..And a cut off date for voting...Anyone else think this??

### Reply 1:
Hi I am new here where I can found more info before giving my vote

### Reply 2:
You don't give a vote, it is not a democracy. You just use the wallet you want to use. In a nutshell;If the majority of the hashrate, (or the trigger could be 75% of X last block out of the last 1000) use a certain wallet, then it become the main branch, since the majority decided that the current Bitcoin is to be scraped.However this is hard forking and most people do not like this. I don't.Since mining to your own Bitcoind is not really a good idea, what you can do is point your miner to a pool that will put that weight toward a different wallet (the one you want) than the current bitcoin core.Right now there is nothing trendy, so nothing for you to ""vote"" for. There is not a government here to push an election, hence no executive authority over voting for or against something. So unless something is trendy, there will be nothing to ""vote"" on.TLDR: You vote with your hashrate, but there is nothing to vote on at the moment.

### Reply 3:
However, every user that is using the ""old"" wallet software will reject any new blocks with ""new"" rules (like higher blocksize), regardless of the length of the chain. Instead of having a main branch that ""wins"", you will have two branches that act as completely separate coins.

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    ""hardware_name"": ""Bitcoind"",
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1550,"Date: 2013-09
Topic: [OPEN]  100GH / 7.5 btc   ---------  Cointerra 50% complete!
### Original post:
Cointerra machine needs $8K more. Selling 8 lots in increments of 100 GH per $1000 or 7.5 btcWe already have $6K from several buyers.Hosting is 20 cents (USD based) per GH per month deducted from bitcoin earnings. We're looking for up to 8 orders. Here's a link if interested in going an ebay route (see more of the terms/maintenance): Links We are hoping to get an earlier shipment so the sooner the better. We can use your help!Contact: <truncated> Methods:Paypal: (leave a message with your email address) <truncated> me your sending wallet address before sending payment) Bitcoin Wallet: <truncated>

### Reply 1:
Just an update. We are still at about 50% there. If anyone is interested please let me know. We have ebay deals and offers. I've come to realize that the bitcoin value is likely to go up a lot so I'm excited to get this machine.

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18683,"Date: 2014-02
Topic: BFL 60 gh/s Single burning up power supplies
### Original post:
I've had a BFL single running for about 4 months on a 700w power supply. Last week I smelled smoke and found that my power supply was burnt out. I have tried to swap with another power supply but it blew that one up right away. Any ideas what could be wrong?

### Reply 1:
The original power supplies aren't great, so I am not surprised it burned out. As for the second one, it may not have been powerful enough. You need about 650 watts and 50 amps on a single rail. Try an Corsair CX750 and it should last as long as your SC does, remember down time cost you money! .Mtnminer

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  },
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    ""hardware_name"": ""Corsair CX750"",
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18668,"Date: 2014-02
Topic: No miner will work :S
### Original post:
The newest cgminer doesn't have gpu support. Use 3.7.2

### Reply 1:
I'm also having issues with GUIMiner too, so I don't think it's that, and that was an error on my part, meant bfgminer.

### Reply 2:
I ran into a big issue, no matter what miner I use, it can't find my GPU (I've used bfgminer and GPUminer, GPUMiner just comes up with ""guiminer.exe has stopped working"" and cgminer asks me to add a device)This is really frustrating, and I have no idea how to fix this I'm using 11.12 drivers and 6450 GPU

### Reply 3:
you need older version for scrypt.. my first mistake too

### Reply 4:
my mistake too

### Reply 5:
Did you try to use older version of cgminer ? It might help

### Reply 6:
You may have to install the AMD APP/OpenCL that matches your AMD Catalyst driver version.<link> you have a Linux package already designed for mining (BAMT) it's pre-installed, but windows, you'll need to do it yourself.

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    ""hardware_name"": ""6450 GPU"",
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    ""hardware_name"": ""AMD APP/OpenCL"",
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988,"Date: 2013-07
Topic: [CLOSED] GROUP BUY #2 ASICMINER ERUPTER USB MINER 0.99 BTC USA/INTERNATIONAL
### Original post:
Whoa that was quite fast.

### Reply 1:
Once I get these I might order more. Need to first see how to connect them all. Already have 10 running full-time.

### Reply 2:
7/16/13 Arrival In Omaha NE!

### Reply 3:
any news here? I might get 10 more once I get these running on my new USB hubs. Will have space for 6 hubs on my ports after these!

### Reply 4:
All orders will be shipped by tomorrow morning

### Reply 5:
7/17/13 Miners have arrived!

### Reply 6:
Great news!

### Reply 7:
All orders in group buy have shipped! Tracking numbers are being sent in the next hour.

### Reply 8:
THIS GROUP BUY IS CLOSED. PLEASE SEE MY GROUP BUY #5 HERE <link> All orders in group buy have shipped! Tracking numbers are being sent in the next hour.7/17/13 Miners have arrived!7/16/13 Arrival In Omaha NE!7/13/13 Arrival In Cincinnati USA!7/12/13 Tracking Number Received From Friedcat Arrival In Hong Kong!7/9/13 Payment was sent.CONFIRMED USB MINERS AVAILABLE!GROUP BUY CLOSES ONCE TIMER ENDS! GREAT NEWS! I HAVE RECEIVED A PAYMENT ADDRESS FROM FRIEDCAT AS A RESELLER OF ASICMINER ERUPTER USB MINERS! ORDER WILL BE PLACED WHEN TIMER ENDS! PLEASE GET YOUR ORDERS IN NOW TO AVOID DISAPPOINTMENT! THANK YOU FOR YOUR ORDERS AND SUPPORT!Timer removed. End time: <truncated> first mass production batch (sapphire) has finished its PCB production and assembly today.It has significant improvements in:Heat reduction: 500-510mA <truncated> We stressed it with 9 Block Erupter USBs in a row without heatsinks heating up each other in a very dense USB hub with 25C without active airflow. No unexpected (non-probabilistic) HW errors ever happen.Speed: This comes after better stability. Now the hashrate converges to its theoretical value of 336MH/s.Appearance: SMT machine assembly (sapphire)heat-sink fr<rest of post truncated>

### Reply 9:
WELL DONE!!!!!!!

### Reply 10:
Awesome. Thank you for the prompt shipping and excellent communication. Cheers!

### Reply 11:
Awesome! I can't wait to get it!

### Reply 12:
Thanks!

### Reply 13:
Thanks!

### Reply 14:
Thank everyone for your trust and support. Good luck hashing bitcoin with your miners!

### Reply 15:
Did someone from this group received yet the eruptors?I'm checking daily the tracking. My package got stuck in Chicago since Monday and only got release from custom only this morning......

### Reply 16:
That is very strange. Sorry to hear that. Other orders sent international have had no problems with customs and arrived very quickly! Must have been the unlucky one customs randomly pick. Everyone else have received their miners by now.

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15105,"Date: 2014-05
Topic: For cloud mining, VPS or Dedicated Server, differences?
### Original post:
Just out of curiosity, for cloud mining purposes, what are the differences between VPS's and Dedicated Servers?

### Reply 1:
VPS's and Dedicated Servers for cloud mining? What are you talking about?Do you know what is VPS, Dedicated Server and Cloud Mining?

### Reply 2:
Trying to keep it as simple as possible...VPS is what pretty much every service out there offers you. You get a virtualized machine with superuser access allowing you to install whatever you want on it. Sign up at Digital Ocean, AWS, etc, you get a VPS.A dedicated server is bare metal. You get the entire processing power of that box to yourself. Unless you own your own data center, or rent space in one, chances are exceptionally slim you'll get an entire server to yourself, or if you do you're going to pay a fortune for the privilege.Cloud mining means that somebody is hosting miners in a facility and is selling you hashing power on those machines. If I were to relate this to VPS and dedicated servers, I would do so as follows:VPS - services like cex.io, pbmining, etc offer you the ability to buy hashing contractsDedicated - You buy your own mining hardware and someone hosts it in their data center for you. Effectively, you'd pay rent (hosting fees) for your machine using up their space/electricity.

### Reply 3:
Cloud mining - Selling hashing power to mine coins, like cex.io, scrypt.cc, <truncated> server - a full server to host your website or anything that server can do. Service like hetzner.deVPS or Virtual Private Server is the chunk of a server, so it's cheaper than dedicated server - like chunkhost.com, DigitalOcean.com

### Reply 4:
Get yourself on ebay and buy some asics of your own and learn some new things.

### Reply 5:
VPS is only able to allocate less resources, efficiency is very low.

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13310,"Date: 2014-12
Topic: v4.8.0 & other RasPI - Other Segmentation fault
### Original post:
Hi,Other device Raspberry Pi B+ (i bought other device and other micro sd card)I installed new OS for new RasPiThe miner is sameAnd again segmentation fault in <truncated> May be some compile options are not fine for gcc?I think a hardware is not problem <truncated> ~ $ gdb -c core.3179 <truncated> gdb (GDB) <truncated> (C) 2012 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <<link> is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law. Type ""show copying""and ""show warranty"" for details.This GDB was configured as <truncated> bug reporting instructions, please see:<<link> symbols from <truncated> LWP 3203][New LWP 3179][New LWP 3181][New LWP 3188][New LWP 3189][New LWP 3190][New LWP 3191][New LWP 3192][New LWP 3193][New LWP 3194][New LWP 3195][New LWP 3196][New LWP 3199][New LWP 3200][New LWP 3180][New LWP 3206][New LWP 3182][New LWP 3205][New LWP 3197][Thread debugging using libthread_db enabled]Using host libthread_db library <truncated> was generated by `cgminer -c cgminer.conf --hfa-hash-clock 700'.Program terminated with signal 11, Segmentation fault.#0 __list_del (next=0x86aa, prev=0xad5fc380<rest of post truncated>

### Reply 1:
Try this one line change in usbutils.c line <truncated> DO_USB_STATS 1to:Code:#define DO_USB_STATS 0

### Reply 2:
Thanks, i doneNow it is working. I will report about results.And please i want to notice that before core files i see in this time in <truncated> 29 07:30:44 raspberrypi kernel: [58770.017696] usb 1-1.3.1: USB disconnect, device number 13Nov 29 07:30:44 raspberrypi kernel: [58770.762521] usb 1-1.3.1: new full-speed USB device number 15 using dwc_otgNov 29 07:30:44 raspberrypi kernel: [58770.876079] usb 1-1.3.1: New USB device found, idVendor=297c, idProduct=0001Nov 29 07:30:44 raspberrypi kernel: [58770.876115] usb 1-1.3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3Nov 29 07:30:44 raspberrypi kernel: [58770.876131] usb 1-1.3.1: Product: M1 ModuleNov 29 07:30:44 raspberrypi kernel: [58770.876144] usb 1-1.3.1: Manufacturer: HashFast LLCNov 29 07:30:44 raspberrypi kernel: [58770.876158] usb 1-1.3.1: SerialNumber: <truncated> 29 07:30:44 raspberrypi kernel: [58770.881156] cdc_acm 1-1.3.1:1.0: ttyACM0: USB ACM deviceAnd Code:Nov 29 09:33:14 raspberrypi kernel: [66120.264296] usb 1-1.3.2: USB disconnect, device number 14Nov 29 09:33:15 raspberrypi kernel: [66121.009407] usb 1-1.3.2: new full-speed USB device number 16 using dwc_otgNov 29 09:33:15 raspberrypi kernel: [66121.<rest of post truncated>

### Reply 3:
Now i got new core file after this <truncated> ~ $ gdb -c core.2206 <truncated> gdb (GDB) <truncated> (C) 2012 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <<link> is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law. Type ""show copying""and ""show warranty"" for details.This GDB was configured as <truncated> bug reporting instructions, please see:<<link> symbols from <truncated> LWP 2228][New LWP 2206][New LWP 2208][New LWP 2215][New LWP 2217][New LWP 2218][New LWP 2219][New LWP 2220][New LWP 2221][New LWP 2222][New LWP 2223][New LWP 2226][New LWP 2227][New LWP 2229][New LWP 2209][New LWP 2216][New LWP 2224][New LWP 2207][New LWP 2210][Thread debugging using libthread_db enabled]Using host libthread_db library <truncated> was generated by `cgminer -c cgminer.conf --hfa-hash-clock 700'.Program terminated with signal 11, Segmentation fault.#0 0x00041610 in <truncated> (cgpu=0x1500f88, usbdev=<optimized out>, intinfo=<optimized out>, epinfo=<optimized out>, data=0x184cf18f <Address 0x184cf18f out of bounds>, length=422109583, <truncated> timeout=0, cmd=C_REJECTED, cancellable=false, tt=false, mode=<<rest of post truncated>

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14548,"Date: 2012-03
Topic: Holy Probabilities, Batman!
### Original post:
I'm CPU mining litecoins at miningpool.com.Some dude, a ""MrDanny,"" isn't even ranked among the top 30 in hashing power. Currently, #30 is getting 4 k/hash.And yet, MrDanny managed to find 2 consecutive blocks within 58 seconds of each other. Number of shares between the 2 blocks? ZERO.

### Reply 1:
mods -- is there a policy regarding questions specific to individual alternate cryptocurrencies? this bitcoin mining forum is getting a lot of unrelated posts like this.

### Reply 2:
Oh whatever. Then move it. It's in mining, and it's about probabilities which is very relevant to Bitcoin mining.If you can't see the connection that's not my problem. Or move it. See if I care.

### Reply 3:
MiningGenerating BitcoinsAlternate <truncated> of cryptocurrencies other than Bitcoin. Note that discussion of how these currencies *relate to* Bitcoin may fit in other categories.

### Reply 4:
<truncated> I solved my 2nd Bitcoin block today. Go me. Happy?

### Reply 5:
Eveofwar and Koin, who tickled your anuses? Gee guys, calm down. No need to be forumnazis

### Reply 6:
Even though I don't have a problem with the post, the thing is that this could get out of hand pretty quickly. There's already a lot of crossover sometimes on the Namecoin stuff (or their was prior to merged mining back in August). It just seems like a better idea to apply the rules universally.

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17979,"Date: 2013-08
Topic: not n00b, but TOTAL mining n00b...PLEASE help!
### Original post:
Hey everyone,I've been into bitcoins for over a year but really don't have more than just a basic understanding of how mining works. If lucrative, I would like to get in on it (duh). I'm not going to build a rig or anything. I want to use a USB device only. I understand it will be slower than a ""rig"". But what about loading it with an ASIC chip (remember I'm a big n00b here)? I apologize for my stupidity, here are my questions in list format:1. Is mining on ANY USB device truly lucrative?2. Is the difficulty THAT bad?3. Loaded with the best chip, how long would it take me to mine 1 bitcoin?4. Finally, how much would the ""best of the best"" USB miners go for?Thanks [hopefully] for your mercy and help.

### Reply 1:
Most ASIC miners, including ""rigs"", are USB devices in the sense that you connect them via USB to a pc that controls the miner. By your post I assume you mean USB devices such as the USB Block Erupter (USB-stick sized devices).USB miners such as the Block Erupter are exactly that: an ASIC chip on a USB stick.format: The small devices? No. Depends on your definition of bad, but for a smallscale miner that doesn't have hardware yet, it's bad. With the increase in difficulty, I'm not sure if these things will ever accumulate an entire Bitcoin. Too much.

### Reply 2:
It's not going to be. Like all investments, only high risk ones stand to potentially be lucrative (and potentially a scam).

### Reply 3:
What I figured. If people are buying/building huge rigs and mining an amount less than desired, how would a USB flash-drive sized device do mining? Thanks for answering literally all my questions. You have completely eliminated the notion of me buying one of the things. For that I REALLY thank you. Tip jar?

### Reply 4:
I recon you should get a block eruptor. It's a great introduction into ASIC mining. You may accumulate enough coins to be able to order (pre order) one of the gen2 ASICs coming out soon, if you try out mining and see what it's about.

### Reply 5:
Terrible advice. You don't need ""an introduction into ASIC mining"" as it's not some arcane art that you have to learn. Most of these things are fairly plug-and-play and day-to-day operation uses software that is very similar or identical to what is used for GPU mining.Even if the block erupter generates enough coins for you to preorder a gen2 USB device, you're much better off keeping your money in the pocket and buying the gen2 directly when it becomes available. That is, if the gen2 devices actually have a positive ROI expectation, which is uncertain at best.Unless your personal hashrate grows at least as quickly as the network hashrate (and difficulty), any ""reinvestment strategy"" is losing proposition.

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23646,"Date: 2021-08
Topic: New mining farm (100 miners to start)
### Original post:
Hey guys,I secured a location today to set up a new farm - starting out with 100x S9 miners.Electrical / cooling is pretty much figured out.Setting up 2x 50 miners shelves - each has a 4ft (15000CFM) exhaust fan that airs the hot air out and each miner has a separate breaker outlet.Only thing I'm wondering is how to best connect ethernet?Thinking of a Asus RT-AC66U B1 that has built in VPN so I can control remotely, but how am I getting all miners connected?TL-SG116 16-port switches are very cheap, but running 7 of them ? Setting them up as a tree?Basically 3 switches straight to the router ... that gives me 3x16 miners (48)On the 4th port another switch and connect (up to 16) switches there? Onto those switches the rest of the miners?thanks

### Reply 1:
get 48 port used switches. let me find you a linkI DID NOT USE THIS GUY<link> grabbed 4 from the guy below. His shop is under 2 miles from my farm<link> is in New JerseyUSE a pc like this<link> with a remote desk top app like this<link>

### Reply 2:
oh damn, thats a dealThanks!Now I just gotta find 2 decent exhaust fans and I should be set

### Reply 3:
note how to access with a pc on site and anydeskoh any cheap monitor keyboard mouse for the pc is good. When you work on site and not remote.I love our remote setup we can go months with out going on site.

### Reply 4:
yeah, I'm using an Asus router with integrated VPN, so we should be able to connect pretty easily, but we have a full office setup at the warehouse anyways and staff

### Reply 5:
Piece of advice... Don't scrimp on the fans, I learned this the hard way. Cheap extraction fans aren't designed to run 24/7 with hot airflow and they will burn out quickly, even when over-specced.If your budget will allow, go for 3-phase fans, specced well above the airflow requirement and with a transformer-based controller.

### Reply 6:
I'm currently looking at 2x 36"" 1/2HP fans from Hessaire. Has decent reviews and at 350/unit its not terrible either.They're spec'd to 11000CFM each, so should be good?

### Reply 7:
are they both for out flow?100 s9 units are about 100 x 220 = 22000 cfm on the little unit fans.So 11000 cfm in and 11000 cfm out is not enough.22000 cfm out works. passive intake is okay if big enough and filtered.we use metal reusable filters like these:<link> these<link> save a fortune in replacement costs.you still may need to clean your s9's every 3 to 6 months.We have a very dirty environment out side of the mining room. So we clean the metal filters monthly and we clean the gear every 100 days.

### Reply 8:
appreciate the info on the filters!Yes, 22000CFM outflow - 2 racks each 50 miners and the fan positioned about 3ft behind them - that should draw the air out.If needed, we can put a portable fan in front of the miners, but temperatures aren't bad.

### Reply 9:
You can connect one switch to another using a LAN cable, you lose a few ports when doing so and the network gets a little messy so try to stick to using large switches, if you can't or/and if they are too expensive, that trick works just fine, also you don't need any sort of VPN and you shouldn't be doing that if you don't have to, get yourself a cheap laptop/pc and use remote desktop/ TeamViewer/ Anydesk to access your miners.

### Reply 10:
Hey, I got 3 of the big cisco switches posted above, thats 150 ports, so should be good Question... You said I shouldn't connect thru a VPN... why is that? Whats the particular issue with that? Using it on my hosted miners and works pretty solid!thanks!

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22224,"Date: 2018-01
Topic: antminer s9 not able switch back „static“ to „DHCP“
### Original post:
hi guys i have installed my antmkner s9, ether cable to a router where the firewall is onhowever miner status all parameters stayed at 0 although all worked finei than chnaged unterantMinerDHCP to Dtatic and suddenly mask, IP and mac address disappearedi was nor able to change back from static to DHCP amd save and apply, also the reset bottom when i tabbed itit said wait 90 seconds but jumped into a error window after few secondsi am worried now what to docan someone help me?

### Reply 1:
Cycle power, allow it to fetch a new IP, then close browser and connect to the new IP and it should all be there.I suspect the errors may be caused because your browser is caching a copy of the old page, which does not exist at that IP anymore.

### Reply 2:
i have switched off the power but it is still the same IP address when i switch onyou mean that i should recset the miner itself? and than it generates a new IP?the issue with ghe status being 0 is it because the firewall is not switched off?

### Reply 3:
will it generate a new IP just by powering off? or do i need to press the reset button on the miner itself to get a new Isp?

### Reply 4:
The router will give it a new IP if needed, you can look on the router page to see what IP has been assigned.Then close your browser and open it again. Then connect to the new IP you saw in the router.

### Reply 5:
ok i hope it workswas just not able to switch back from static and all the data dissapeared in the setting windowanyway thx for the help

### Reply 6:
I am having the same issue. I tried to change my ip to static and lost everything in that screen and now it won't change back and i can't connect to the antminer. It isn't showing as being online in my router. I've tried using ip reporter and nothing shows up when i push the button on the antminer. I've unplugged the miner many times to try and reset the ip address but nothing works. Any help would be greatly appreciated.

### Reply 7:
if you haven't already checked out how to reset the antminer : <link> looks like the networking on the miner is out of whack and you may need to factory reset it. I guess since you can't log into it your only option would be to use the reset button.you can try resetting your router, or even using a different port/cable.

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22612,"Date: 2018-06
Topic: Antminer S9 stopped mining after 3 months
### Original post:
I have several miners and one stopped working now. I can still access the miner but it won't connect to antpool. It keeps the same status like starting the miner. I switched the PSUs and reset the S9 but nothing worked. The PSU remains ""cold"" which means the miner doesn't draw any power.Anybody any idea or is this miner's life over. After 3 months it would be a shame. Thank you for any ideas.

### Reply 1:
1) Try changing the firmware level, as a final attempt, try changing it back to a fixed frequency. It sounds like its having problems during speed setting.2) STOP USING ANTPOOL. They steal all your transaction fees to fatten their own wallets. Go to Slushpool, Kano (my choice), or ViaBTC.

### Reply 2:
Are you on 220V?Does it boot until there is info on the miner status page?Can you copy the kernel log to give us more details?

### Reply 3:
Yes, one of your fans died. You can test them one at a time if you aren't sure which one it is. All you have to do is replace the dead fan and your miner will start hashing again.

### Reply 4:
I got the S9 out of the rack and turned it on on my desk. I can see the front and back fan are running (one in, the other out). Still the fan? Thank you.

### Reply 5:
Please see log. It shows a fan error. Also the red LEDs on the panels where you connect the PSU are all off. The other miners have red LEDs on.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.00<rest of post truncated>

### Reply 6:
If one fan is working it will move enough air to spin the other one so simply looking at it wont help unless its fully seized. Also, the only thing that needs to fail is the tach signal on a fan. It can still be running but if the firmware cannot read the speed it will still not hash.

### Reply 7:
fanatic26. Thank you for the answer. I will get new fans.

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1903,"Date: 2013-10
Topic: [CLOSED] Fundraising for HF R1 Upgrade Promo, DZ Miners Co-op., Round 1 gents
### Original post:
Also: based on R1 open voting, it looks like we're shooting for a 20-30% Overclock, possibly pushing for 30%+ on the Overclocking.Please PM me if you have any strong objections to this plan. Mahalo!==Also, some R1 folks are trickling in via PM so we're going to be oversold and some upgrade shares will be refunded.

### Reply 1:
We can pay for it today.11.1 BTC is $1554 at today's rate..

### Reply 2:
It turns out to be a bit more complicated than that:A. 26 R1B shares were bought by someone that wasn't in R1. Now, much of this buyer's funds may be used for Round 7 or another Round. 5-10 R1B shares will likely be kept by this buyer.B. To offset these shares going out: baros008 has 8 or 10 R2B shares moving to R1B that's currently sitting in the R2B wallet. I'm awaiting word as to whether he prefers 8 or 10 R1B shares. I've also given him access to my eight R1B shares since he was kind enough to move his 8 R2B shares to here (or to the target HF wallet) when it we became oversold in Round 2B.C. I've also been hearing from R1 folks starting to filter back to the GB forum (some were lost, sorry about that; R2 was a spur of moment decision). I do expect payments from 1 or 2 R1 members shortly.Let me take care of A tonight, because that's the one thing I can control at the moment. I hope to have further clarification and hopefully a resolution tomorrow for R1B.

### Reply 3:
Again I sent the BTC to push the order thru...if R1 shareholders claim them as long as they pay me the amount I paid per share they can have their shares back, otherwise from what was posted earlier they become mine =)

",[]
6115,"Date: 2013-08
Topic: 2 Gh/s QuickMiners by aquickcnc - Anyone try these?
### Original post:
<link> time seeing them today, what's in these things?

### Reply 1:
Don't know, don't care, you have to be crazy to pay $200 for 1 GH/s. I am sure they will sell all 3 of them though!

### Reply 2:
Looks like a scam.

### Reply 3:
A lie.

### Reply 4:
Never heard of the company before, apparently they were kickstarted for some other specialized hardware in the past. I can't imagine they aren't legit, they're certainly overpriced for what they are.

### Reply 5:
He could have squeezed six block eruptors and a hub into a case and bolted on a fan. Difficult to estimate its size from the (lack) of detail on the listing. No previous history of selling block eruptors either (just some heatsinks and pretty cases ).It does look scammy, someone with an apparently A* 100% ebay seller's record goes rogue. I just don't trust ebay's feedback. All sorts of ways to game it.

### Reply 6:
Oh c'mon it's a wooden box the size of the original Jalepeno with a fan screwed on top. If BFL couldn't get it that size without overheating, an unknown on eBay hasn't. In any case eBay will kick him off as soon as someone notifies them or gets scammed.

### Reply 7:
This is a reply I got back from this guy, Dear rob,I just build them in my spare time, but I have them in hand.We also have two up for Buy it Now.- aquickcncClick ""respond"" to reply through Messages, or go to your email to reply$400 buy me now price is a little steep when you can buy 4 Block Erupters for $180 to $200.

### Reply 8:
Look at the picture: CGminer status - started 1970-01-01

### Reply 9:
AMUs. The guys has wedged block erupters in there.

### Reply 10:
USB hub + few USB Asic Miners + fan + printed case.

### Reply 11:
That probably means he's running the Erupters off a Raspberry Pi with MinePeon on a wireless connection. It's a known issue in MinePeon when using Wifi; the older versions don't update their time at all (unless you ssh in and do it manually), and newer versions only update after about five minutes of being turned on.Also, if you start CGminer without any hardware at all plugged in, then plug it in after boot, it won't show the hardware status lines, so that could be a legit screenshot.Having said that, I wouldn't buy from this guy. If it really is six Erupters, it's way overpriced, and if it's something else, it's probably a scam.

### Reply 12:
It's a hub with six erupters in a 3d-printed box with a fan on top. That's it. The people paying $400 for them are buying it because of how it looks... ebay is full of idiots. Remember, there are also people there who paid up to $2000 for a jalapeno recently... so trying to figure out a rational reason for ebay prices is pointless.

### Reply 13:
If they were somewhat cheaper, say $100, then it wouldn't be that bad of a choice.6x Block Erupters - $270 ($45 each at current ebay price)1x 6 Port Powered Hub - ~$25 for a D-Link DUB-H7Case w/ fan - $15 perhaps? Guesstimate based on raspberry pi case scaled up with fan added.So around $310 for an all in one ready to go solution, and that's at cost without shipping or labor.I think $325 would be reasonable for these, and there would still be profit on their end if they're ordering the erupters in bulk and printing the cases themselves.

### Reply 14:
Too many idiots in this world. Who would pay $400 for this???But eyyyy hey. Free money printing machine!!! Wohooooo

### Reply 15:
Confirmed this is exactly what it is.

### Reply 16:
Anyone have a picture of one opened up? I would like to see but sure am not spending that money just to see inside.

### Reply 17:
I would not advise anyone to buy one of these. It clearly not professionally designed, so who knows what problems may show up? (eg inadequate cooling, fire hazard etc.)

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8535,"Date: 2014-11
Topic: Any ideas to remove glued on heatsinks
### Original post:
So I was able to get some replacement X3 boards from MS (thank you), and I am going to just move the heat sink from the dead one to the good one.The heatsink for the asic is held on by 4 screws - simple enough. On either end of the board is another heat sink and that one is applied with some type of glue, I tried pulling, turning, twisting, etc, but I don't really want to accidentally break the defective board in the process of removing the heatsink. I have a heat gun I could try to heat them up, but I didn't want to go too hot and melt anything. Replacement boardAny tips

### Reply 1:
Heating it up is probably going to be your best bet - remember, they're intended to deal with rather hot chips in the first place, warming it up a bit isn't going to hurt much.One other thing you could try, though, is fishing wire or any other thin but strong wire, and see if you can get that between the heat sink and the surface, then just 'saw' through. It's sometimes used in garages to remove worn/damaged badges from cars without damaging the coating on the car; the glue they use is pure evil.<link>

### Reply 2:
<link> Google foo. Do it at your own risk obviously.<link> Video removal.

### Reply 3:
I had googled it, and some of the results didn't sound the best. This is stuck to 12 chips. So it's not like a little heatsink stuck to a single chip. I tried to heat it up by leaving it behind a working X3, figuring maybe that owuld be hot enough, but that didn't work. I'll try the heat gun today - I just didn't want to melt the board.

### Reply 4:
since the thermal paste isn't an adhesive, I am betting that most of the strength in the bond is from vacuum which can be pretty significant.it isn't going to have much shear strength so sliding or twisting should break the bond.warming it is going to be challenging because the heat sink is designed to radiate the heat away from the chip itself. You are going to need a pretty decent heat gun to overcome this.

### Reply 5:
The pure isopropyl bath then horizontal sheering twist?I don't envy you having to do this. Seems monumentally hard.

### Reply 6:
heat gun gets hot enough to light paper on fire - it's just a normal heat gun, but then you can't touch the heat sink....It isn't just thermal paste, they are actually glued on - per MSI finally got them off of one board by applying some heat, sideways twist and then finally putting a pair of pliers on it and prying up. Now to get the white blubbery gunk off the heat sink... Then repeat the process a few more time.s

### Reply 7:
Pictures... video?Be a good idea for others to have later that could go through same issues.

### Reply 8:
When you discover what will remove the glue, let us know.I'd try d-limonene to start with, then methylene dichloride then MEK.

### Reply 9:
I was able to get them off by applying rubbing alcohol where i could see the white blubber, twisting as much as I could, and then finally I'd put a pair of pliers on the heat sink and kind of pry it off. On one of the boards admittedly one of those R22 things broke off the board as well. Since I figured that they are more concerned with getting chips back, repairing an R22 if the needed to isn't a big deal.So Perhaps some other manufacturers will take this into consideration - if you need a large heat sink to cover 8 chips - GLUE is a bad idea (backed up by yellow scotch tape) (Off topic: why is so much tape out of china yellow...). Instead the heatsink should have been screwed or pressure clamped on. In an ideal world it would have been 1 heatsink per board, not 4. (1 per chip, 1 per side for the power things)I ended up scraping the glue and crap off. MS suggested 99% ISO alcohol to help remove the gunk. I didn't have any handy, so I used a knife and some 70% iso. Afterwards I sanded the bottom of it with some fine grain sand paper (hope thats ok) to smooth out the surface.After everything was cleaned up I gave it a final wipe with alcohol and sprayed the small bits of dust off wi<rest of post truncated>

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10710,"Date: 2018-02
Topic: [Guide] Dogie's Comprehensive SpondooliesTech SP30 Setup [HD]
### Original post:
Nice guide Dogie How does the noise compare to the sp10 when the sp30 is at 4.5TH?What amp rated power leads would you recommend?

### Reply 1:
Looks very beautiful!

### Reply 2:
The noise on the SP30 is purely determined by the PSUs, rather than 'mostly' on the SP10. It is lower and lower pitched even compared to the SP10 in quiet mode.If you're running at 110V you're going to need at least 13A cables.

### Reply 3:
It does. However I'm also not sure at what point we scrap beauty and density to get rid of the bottleneck for these chips which is power/heat heat/power. They have so much headroom if we could get them more power, noise levels could be brought down magnitudes if we could use different PSUs and cooling could be increased significantly if we went to 3U.

### Reply 4:
Sounds promising. I will be running 230V

### Reply 5:
First image does not seem an actual picture as it does have ears and does not match the other front side pictures in your post.

### Reply 6:
agree this one looks liike money machine . but let we see in next year how many will he got .btw nice set up !

### Reply 7:
All the top models get airbrushed

### Reply 8:
First image is their CAD rendering as mine didn't come out right. New location has different lighting so I've ordered some more lighting to compensate. The only difference is the actual SP30 doesn't use full cover heatsinks and the true color is silvery like the SP10.

### Reply 9:
If you were unhappy with the noise from a SP10 is it pretty safe to assume you will still be unhappy with a SP30 in warm ambient temps?

### Reply 10:
Not necessarily, its close enough that it will very much depend on who you're worried about being unhappy with the noise. It will really come down to your specific situation, and whether you can close doors etc.

### Reply 11:
Any chance you could post an audio clip of the unit hashing? Perhaps a comparison of the 2?

### Reply 12:
thanks for the guideThe power cord you recommend :SF Cable, 10ft 16 AWG Universal Power Cord - IEC320 C13 to NEMA 5-15P SJT 13A<link> looks like a regular PC power supply power cord , comes standard with my 1300Watt PSUs ? is'nt this only for 110v?what cord would be needed to run this miner off a 200-240 Amp receptable ? would you need a PDU ?

### Reply 13:
You'd need a cord that goes from whatever kind of recepticle you have (6-20p L6-20p or L6-30p would be common but not the only options) to C13. However since it has two PSU's, you'd need a splitter, which might be difficult to find with enough amp rating, or you'd need a PDU.

### Reply 14:
I was planning on using two separate outlets on different breakers thats not a problem running the numbers honestly running an SP30 at 4.1 TH at 2600WATT actuallyrunning the numbers provides a better hash/Watt number than 4.5 TH at 2900WATT, not sure what all the big deal with maxizing the hash ratio to all ends is. Hash/Watt is what matters in the end.

### Reply 15:
Really?

### Reply 16:
@marvell1That is a misconception.What matters is $/GH and operational costs aka $/GH/m.Increasing the hashrate lowers $/GH and can lead to a faster ROI, especially if your $/GH/m is low (aka 5ct/kW/h including hosting).

### Reply 17:
You are wrong here. For the moment you are better running it at full speed and at max unit's W/GH/s. I plan to switch it to 4Th/s at 2.3kW at ~70 bil diff.

### Reply 18:
If you already have 2 circuits installed, then just buy the cables with the correct ends, and you should be good to go. Honestly though, even at 3kW, you're not to go over 12-13A @240v, which is perfectly safe on a 20A circuit.Find the plug that matches your recepticles:<link> one already has 2xC13, so you'd be good to go.<link> of course you can easily get C13-C14 extension cables wherever (online...Don't expect to find them at Ace Hardware). Though I would be sure to get those cables rated for 250v & at least 15-20A.As to the W/Hash ratio, that is what matters ""in the end"" only so much as you are talking end of life of your hardware. As RoadStress said after the difficulty is >70B. Until then, maximize your hash rate as much as you safely can.

### Reply 19:
hmm thanks for the information I might have to rethink things then

### Reply 20:
Just look at the difference between your numbers:you gain 400GH @ an extra cost of 300W. That's still only 0.75W/GH, which, unless you have some crazy expensive electricity/hosting rates, is worth mining for a long time to come.

### Reply 21:
Thanks a lot for this info and no I don't have the plugs yet I figure I can grab a 30AMP plug from home depot or something. I Initially planned on getting two new 30AMP circuits installed for $700 but with with the lesser hash rate than I expected on the SP30 (4.5TH vs close to 6TH) I decided to pass on those until I am able to purchase a second sp30 or some S3s. For now I was planning on stealing from 30A 240V my dr<rest of thread truncated>
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14854,"Date: 2013-12
Topic: CGminer bat file
### Original post:
Hey guys, i have been messing around with our settings using cgwatcher... i have found that the optimal memclock is different for each card, can anyone show me a sample .bat file that has different settings for each gpu? thanksMax

### Reply 1:
Hey,Cant comment on the settings for each gpu, but I use something like the following on an ATI 5xxx card, I rarely use it tho so never tweaked my settings to well so may be out/incorrect now depending on cgminer etc. I'm not familiar with the memlock settings, I'd imagine you'd just need to supply the value in the command string :-""color 16setx <truncated> 100setx <truncated> <truncated> -o <truncated> -u username -p password --queue 0 --expiry 1 --intensity 8 --shaders 1440 <truncated> 7200 --scrypt""I believe on windows that the 2nd/3rd lines are important for some reason, not that I can remember why....Hope that heps in someway...

### Reply 2:
<link> check this thread. note the guy in that particular message has probs

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13759,"Date: 2022-03
Topic: no server were found after cgminer raspberry pi os
### Original post:
Hi all, I'm totally newbie at linux and miner. The GekkoScience compacf stickminer used cgminer on raspbian os. It was fine last few weeks until yesterday I forgot close terninal with Q key instead tick X close straight. Today i fired up Pi and Gekko, only shown below message:[2022-03-15 05:33:14.811] Started cgminer 4.12.0[2022-03-15 05:33:14.811] Probing for an alive pool[2022-03-15 05:34:14.816] No servers were found that could be used to get work from.[2022-03-15 05:34:14.817] Please check the details from the list below of the servers you have input[2022-03-15 05:34:14.817] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers[2022-03-15 05:34:14.817] Pool: 0 URL: <truncated> User: raspberry Password: x[2022-03-15 05:34:14.818] Press any key to exit, or cgminer will wait indefinitely for an alive pool.Is this because terminal didn't close correct or something wrong?Thank you for help!

### Reply 1:
Are you sure that your Raspi has an internet connection? try to reattach the cable if it is connected through the ethernet cable. Also, try to replace the pool server or other servers I suggest try this pool below- <link> still do not work bring your issue on their official thread here <link> ask for help.

### Reply 2:
Thanks BitMaxz. The pool i guess it's bound with gekko usb minestick. I found similar thread at 2015, <link> but no solution, or maybe no one know the answer. And your advised ckpool didn't work either.Command I used for activate cgminer with GekkoScience Compacf is sudo ./cgminer -o <truncated> -u [username] -p x <truncated> 400 --suggest-diff 128Yeah, I used new SD following cgminer installation to raspbian os same result popped. I think the SSH didn't connect or something else. I'll do more searching.Thanks for helps!

### Reply 3:
The sticks are not bound to any particular pool. There is another issue at fault.

### Reply 4:
Apologized delay responded. Kinda busy my current job.The problem had solved. It's blocked by airprotection on Asus RT-AC88U router. Similar thread like this posted at 2017 <link> But I figured more . I put the pool URL to whitelist, keep airprotection working. It's all good, everything fine. Thanks for support and help.Cheers

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8950,"Date: 2015-03
Topic: Power Question? Voltage Drop?
### Original post:
So the question is....Does anyone see better performance by slightly over volting the DC input? On my adjustable voltage PSU's I used to tune then so I actually get 12.0V-12.1V into the miner to counter the voltage drop if the wire runs. Just wondering if it does any good to maybe provide 12.2? or 12.4? Same question for the opposite the PSU's that output exactly 12.0V on the breakout board are actually providing less then 12.0V to the miner, does this have any negative effect?Is one way hard or easier on the VRMs?Any constructive input is appreciated.TIA.

### Reply 1:
Unless your using 100-200 feet of extension cords,you should have very little voltage drop.A 3-6 foot cord will have negligible voltage drop.A little ""boost"" may be ok,depending on the device's sensitivity.Just keep a close eye on em & measure (volt,wattage,temp & performance) for a period of time to be sure your not harming them

### Reply 2:
What kind of cable are you using? I see VERY noticeable voltage drops with even 24-36 inches. That is with 16AWG Copper.And I have never seen a 100 foot PCI-E cable before, from what I know I do not even think 12V is usable if you tried a 100 foot PCI-E cable.

### Reply 3:
you guys are talking ac and dc.@ op what psu do you have that is adjustable dc? this would be good to use with antminer s-5's

### Reply 4:
Higher voltage from the PSU will mean, for the same power draw on the miner, less current draw through your cabling and therefore less loss (resistive losses are current squared). However, higher voltage from the PSU means a lower duty cycle in a VRM miner which means increased current ripple (with losses in parasitic resistance on the board) and decreased overall efficiency. Higher voltage in a string miner means higher node voltages, and therefore higher current consumption. If anything, you probably want to lower the PSU's output voltage. I even saw a measurable difference in efficiency with my S1 testing between identical clocks and voltages with an 11.6V and a 12.0V input.16AWG copper has 4.014 ohms/kfoot, so a 100 foot 6-pin cable would expect about 0.27 ohms. Powering an S5 at 600W you'd see 150W per cable, so 12.5A per cable, expected wire loss of 42W PER CABLE. That's big enough you'd have to factor it into delivery calculations since the endpoint voltage is less, and the current is that much more so the power loss is actually greater. Gross.

### Reply 5:
I thought you were talkin bout wall to PSU....if your seeing that big a drop on your PCIE cables,you need better cables or connectors or even a better PSU Sidehack covered it

### Reply 6:
'Thanks. That was what I needed, and of course I do not run 100' cables even if I needed on for that reason. I use 36"" or shorter 16AWG Copper wires.

### Reply 7:
Yeah, as much of my stuff as can be run with 18"" gets those cables. Less than 0.7% wire loss typical, not including the PCIe contact resistance.

### Reply 8:
You are correct I forgot to specify DC, I figured since I refereed to 12V it was obvious but my fault. I am talking DC.The PSU is HP DPS-800GB can adjust from 12.05V-14.0V with the breakout board. The boards were made by Jack Sausa, they have a small potentiometer on the board for adjust.

### Reply 9:
All depends what do you plug at that regulated +12V. If miner have string design then you will increase core voltage of each chip and power draw will also increase. If miner have ""classic"" design with DC/DC converter then increasing +12V will reduce current draw (power draw will increase just little bit). In first case you will be able to overclock miner higher, in second you will be able to use thinner cables and cheaper low quality PCI-E plugs.

### Reply 10:
Also keep in mind that as the cabling ages it can pickup corrosion and deterioration that will slowly increase the resistance in the wire. No, nothing over night but, as the months rack up, in this hostile Texas air, occasional tune ups will be beneficial. Unless you live in Stink-A-Denna, then you might want to check things hourly

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11045,"Date: 2021-11
Topic: ECHU
### Original post:
Hello guys, my Avalon 921 report at ECHU status the code 131073 instead of 0 0 0 0 it says 131073 131073 131073 131073. I know that it's the hashboard's but i want to know if PMU's failed may cause this? the voltage for the PMU's are correct. Can the hashboard's be right and be something else? all others info at the API log looks correct.

### Reply 1:
Hi, please see my troubleshooting guide for the Avalons.The link is in my signature space, as are also my other guides.(<link> )The guide is also somewhat applicable for 9/10/11/12 series Avalons.Edit: I remember explaining that same ECHU code for someone, and I found my old post here: <link>

### Reply 2:
Thanks for your answer. I had read it but i wonder how is this possible, i mean that MW0, MW1, MW2, MW3 not working. Can be the PSU?

### Reply 3:
If you have another psu, I would give it a test.

### Reply 4:
Unfortunately all my spares are burned.

### Reply 5:
Maybe buy one for a spare,even if it doesn't fix the avalon problem,you can have it as a future spare part.

### Reply 6:
Yeah i will buy one.

### Reply 7:
I have one more question, i have some A921 new fans but it is 12V 9A instead of 12V 4.68A. I know that if it is below the factory specs there will be problems for sure. it is right to use them? i mean the new ones 12V 9A?

### Reply 8:
Should not matter for the most part so long as they are moving the correct amount of air (CMF) or more at the RPM that the miner is expecting.What model fan did you get to replace the stock ones? And why?The stock ones that they used, were at least for me and the people I know, just about indestructible vs the ones from other miner manufacturers.-Dave

### Reply 9:
As it is an 9 Amp fan, I would make sure the power wires are thick enough.Probably you wont have fans at 100 percent pulling the max. current all the time,but for a while they can be at 100 percent speed.

### Reply 10:
Thank you guys.

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    ""hardware_name"": ""spare PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A921 new fans"",
    ""hardware_is_owned"": true
  }
]"
12915,"Date: 2014-02
Topic: TL-WN725N or any WIFI dongle to works in SMOS / BAMT ?
### Original post:
I tried to install a WIFI USB dongle (TP-Link TL-WN725N v2), which is not recognized. I followed the procedure to install the TPLINK drivers from a Raspberry tutorial (but I put the driver in the equivalent SMOS wireless drivers directory). <link> get an error trying to initiate the driver using sudo modprobe 8188eu. No WLAN shows when doing ifcongif.Any good tutorial for installing the TL-WN725N v2 to SMOS?Any dongle that works OOTB?

","[
  {
    ""hardware_name"": ""WIFI USB dongle (TP-Link TL-WN725N v2)"",
    ""hardware_is_owned"": true
  }
]"
20701,"Date: 2015-10
Topic: Stratum from pool 0 requested work restart.
### Original post:
I recently set up an Antminer U2+ with my Raspberry Pi 2 Model B.The first time I ran CGMiner, it worked successfully and was running at about 1.8 Ghash/s.I then pressed Q to quit and rebooted my Pi. Now whenever I run CGMiner is just does <truncated> 17:44:11] Started cgminer 4.9.0[2015-10-28 17:44:12] <truncated> <truncated> 17:44:12] Bmsc send golden nonce1[2015-10-28 17:44:12] Bmsc recv golden nonce1 0345182b9f -- 0345182b[2015-10-28 17:44:12] Bmsc send golden nonce2[2015-10-28 17:44:13] Bmsc recv golden nonce timeout[2015-10-28 17:44:13] AMU0 Init: mode=default read_time=57ms limit=0ms <truncated> 17:44:13] Probing for an alive pool[2015-10-28 17:44:13] Pool 0 difficulty changed to 256[2015-10-28 17:44:14] Network diff set to 60.9G[2015-10-28 17:44:36] Pool 0 difficulty changed to 51[2015-10-28 17:44:36] Stratum from pool 0 requested work restart[2015-10-28 17:44:36] Stratum from pool 0 requested work restart[2015-10-28 17:45:06] Pool 0 difficulty changed to 10[2015-10-28 17:45:06] Stratum from pool 0 requested work restart[2015-10-28 17:45:36] Pool 0 difficulty changed to 8[2015-10-28 17:45:36] Stratum from pool 0 requested work restart[2015-10-28 17:46:11] Stratum from pool <rest of post truncated>

### Reply 1:
I use an U2 and since this morning I am unable to mine...It's the second time it happens.I mine with--bmsc-options 115200:20

### Reply 2:
So you're saying that the second time you run CGMiner, it doesn't work? Like my problem?

### Reply 3:
Thanks, but what do those options actually mean? What are the numbers?

### Reply 4:
I had difficulties to start...and after few days suddently it works.and then after a while all was frozenI noticed that it was my energy saver ...so I worked only with screen saver and all wored perfectly 10 days or soThis morning I had internet connecton problems and since all is ok with internet mi miner is not working

### Reply 5:
The frequence I belive(no)

### Reply 6:
Thanks. What is the timeout for though? What is it timing?

### Reply 7:
the timing?

### Reply 8:
But what timing?What is it timing?

### Reply 9:
sorry I do not see what you nean.

### Reply 10:
Ok, nevermind Why is the baud rate set to 115200?What amount is that?

### Reply 11:
It's unbelievable...this morning all works perfectly...I cannot understand why sometimes it is impossible to mine with my U2The baud rate is us for the communication it is fixed by the contructor and the program.see baud rate on google and you will understand better.

","[
  {
    ""hardware_name"": ""Antminer U2+"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Raspberry Pi 2 Model B"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U2"",
    ""hardware_is_owned"": true
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]"
18239,"Date: 2013-11
Topic: BFGMiner + Block Eruptor - GPU Mining: Somewhat Noobish Question
### Original post:
Okay, so I received a Block Erupter today. I bought it because I like being an active part of the network, and that I can now do so without killing a GPU in the process. No delusions that I'll earn back the cost.I've been using GPUMiner with my videocard until now, and moving over to BFGMiner, I *don't* want the program to utilize my GPU *and* the Block Erupter - only the latter.Is there something on the command line to do that?

### Reply 1:
you can run cgminer with --disable-gpu.... have no idea about bfgminer though

### Reply 2:
I'll give that a try and report back.

### Reply 3:
If it still unsolved:Press M button for Manage Devices sellect your GPU with arrows.Press D key for DisableENTER

### Reply 4:
bfgminer.exe -o <link> -u username.worker1 -p password --disable-gpu -S all

### Reply 5:
Or -G does it too.You'll also want -S erupter:all - uses the proper driver then.

### Reply 6:
@HellDiverUK just wanted to say thanks. Have read about 10 guides, yours is the first to mention that. Cheers!Edit: Also, just realised this was only my second ever post, in god knows how long. Lurk over... haha.

","[
  {
    ""hardware_name"": ""Block Erupter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  }
]"
13860,"Date: 2011-03
Topic: Hardware implementations of SHA-256
### Original post:
Please give links to something like this:<link>

",[]
6029,"Date: 2013-08
Topic: [Tutorial] How to mine with Block Erupters
### Original post:
This blog post describes how to set up several Block Erupters in cgminer on Windows.First here are the ingredients:* Block Erupters.* A powered USB hub with multiple USB ports. I had problems with random disconnecting and devices not being detected when I plugged more than 7 devices into one hub.* A computer to plug them into and Windows 7 or 8 or something like that.* A hashing pool account.* The latest version of cgminer.* Zadig ( <link> )* CGWatcher (optional)To start mining, follow these instructions:1. Plug in your USB hub.2. Create a shortcut or batch file to cgminer like <truncated> -o [pool hostname]:[port] -u username.workername -p [password] icarus-options 115200:1:1 icarus-timing 3.0=100Note; Previous versions of cgminer required you to specify the com port for the USB devices individually on the command line, but newer versions now detect the devices automatically.3. Plug in all of your Block Erupters into the USB hub(s).4. Start Zadig.5. Go to Options > List All Devices.6. Select the first instance of CP2102 USB to Uart Bridge Controller.7. Click the Reinstall Driver button.This will re-install the driver for the first Block Erupter (WinUSB).8. Select the next USB to U<rest of post truncated>

### Reply 1:
Thank you for this Tutorial. I have two quick questions1) So, if ten can produce 3 Gh/s then that means the claims of 300 Mh/s is spot on. If I can only afford to get one or two Block Erupters right now, is it even worth it to run one or two?2) I am using Linux and have BFGMiner installed. Since it is so similar to CGMiner, will it auto-detect the Block Erupter and assign work to it automatically?

### Reply 2:
very nice guide, kudos for writing it

### Reply 3:
Or you could:1. Download bfgminer2. Download VCP drivers3. Install VCP drivers by double clicking the setup program4. Plug in your hub and miners5. Run bfgminerAwful, awful lot easier.

### Reply 4:
I'm running 5 eruptors on Lubuntu linux. It detected them right away, but I did have to start cgminer using sudo.I don't know if BFGMiner has a rules file that you can install for the USB devices, but cgminer has one if you don't want to use sudo.

### Reply 5:
Awesome. Thanks! This is a great post. I am going to copy it into a text file and keep it on my desktop

","[
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    ""hardware_name"": ""USB hub"",
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  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CP2102 USB to Uart Bridge Controller"",
    ""hardware_is_owned"": false
  }
]"
23054,"Date: 2019-08
Topic: Only one hashing board working on S9
### Original post:
I was looking through the kernal logs of my S9 and one chain picks up 63 asics, but the two others pick up 0. Does that mean they are just burnt out or is there an easy fix?

### Reply 1:
Have you tried to upgrade the firmware to the latest version? The latest version is <truncated> flash it first to the latest version then check the miner's configuration and look for working mode and try to check which settings will fix your issue until you choose ""lower power mode"". If not working do a hard reset and repeat.You can find the guide from here <link> the 1st and 3rd method and ignore the 2nd method.If nothing works there is a problem on PSU or Hashboard.

### Reply 2:
I have not seen any 2019 firmware fixes the problem with hashboards showing 0 asics, the 2019 firmware version/s are only good for those boards that keep crashing , whereby if you set them on lower frequency you might get lucky enough to have them run perfectly.To my personal experience I had the most luck with this particular firmware <truncated> , as explained in this topic There is a small chance that such an issue would be fixed on a firmware level, but chances are the hashboard is dead - fixing it would require some tools and stuff, you will most likely need to replace a faulty chip on that board.

### Reply 3:
You do make sense from a technical stand point, i remember using a modified firmware for old school D3 and i was able to bring some dead boards back to life using super high voltage, However to my personal experience, the chances of ""resurrecting"" dead S9 boards are pretty low to the point that they don't worth the time flashing BraiinsOS.This indeed has no scientific back up and simply based on my personal experience and some other miners, having said that trying out BraiinsOS does not seem like a bad plan at all.

### Reply 4:
Also with BraiinsOS you can force different speeds and voltages that might resurrect them again. And sometimes its just the silly sensors that are bust. But to use bOS you should avoid Bitmain's 2019 firmware if you don't have physical access or the sd slot in your <truncated> i wouldn't trust the way Bitmain lowers speeds. Direct voltage and speed control is better than ""minus 1, or minus 2 th"", where its probably changing both without giving you enough control. Besides each board requires different settings anyway.But first thing to try is take out all three boards and test one by one with different data and power cables.

### Reply 5:
No, you can't find any because 2019 firmware just release this year. The reason why I recommend the latest version because the 2019 firmware added multi-option menu in miners configuration where you can set the miner to other option or low power mode. Where you can choose to increase hashrate or to run the miner at a lower frequency and lower voltage.There are sometimes hashboard works in low frequency and lower voltage so if he had this firmware he can choose what frequency and working voltage works in his two hashboard and you have nothing to lose if you try.I'm honestly don't recommend newbies to downgrade their miners to lower version which is open port and ssh enabled because there are chances that they can be hacked or become infected with mining virus. Unless if they know how to protect their miners to any of these attacks.

### Reply 6:
Specially considering you don't need to flash it into the controller's nand, just boot it from the sd card by moving a jumper. Don't like it? Take out the card and move the jumper back. Nothing happened.As for resurrecting chips there are two things you can do:Lower speeds (in mhz), or increase voltage. Lowering the speed is safer, you should only try messing with voltages under 9v, else lower those mhz.

### Reply 7:
This point has been discussed a few times before, to me , that is a lot of work when compared to flashing a firmware from bitmain in 10 seconds using only a web browser, now this ""a lot of work"" is subjective indeed, and depends on a lot of factors, the most important part is not being able to physically access your miner, I am still using bitmain firmware simply because1-it does what it suppose to.2-requires no effort.3-could be flashed over the internet with ease.So until I can flash braiins' with the same efforts ,I am going to sadly stick with Bitmain's version.it depends really, i had some hash board that needed a very low frequency to run stable, the only way to have them run at a moderate frequency was increasing the voltage, and giving the fact that those will die soon anyway, plus I needed to ROI asap i focused more on increasing the voltage until there was no room then I started to lower the frequency, but everyone and every board is different.

### Reply 8:
Did you fix a fix?

","[
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""D3"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""sd card"",
    ""hardware_is_owned"": false
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]"
21536,"Date: 2017-08
Topic: Antminer s7 Scission of chips repair
### Original post:
one hashboard on my s7 dropped to only 30 chips. Is there a way to fix without sending in to bitmain for repair?<link>

### Reply 1:
Repair by users is not possible. Biggest problem is that the chips and boards went out of production a couple years ago... Given that, repair might not be possible at all.Check with Bitmain Warranty (no, they are not part of Bitmain) in Colorado for paid repair. Not sure if they have made the full name change to MyRig yet.

### Reply 2:
It shows 30 when it cant see anything. That is not a real number of functional chips just FYI

","[
  {
    ""hardware_name"": ""Antminer s7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""boards"",
    ""hardware_is_owned"": false
  }
]"
14668,"Date: 2013-04
Topic: P2Pool Question
### Original post:
Does p2pool software automatically pay people who mine in your node? If not how does it work?Is there anyone so the current payouts thing only shows people from your node?Thanks.

### Reply 1:
Yes, it automagically pays people connected to your pool,they only need to connect with a receiving-address as username and any password.All addresses used are shown on the ""Graphs"" page under ""Miners"" and you can check those addresses on the ""Payouts if a block were found NOW:""-table of your pools index page.

",[]
16132,"Date: 2021-09
Topic: Is it possible to solo mine a whole block solely on insane luck?
### Original post:
Hey everyone,This question might sound dumb, but as I am not so savvy with the technicals of how mining works, I just have one question:As far as I know, blocks are mined based on ""bruteforcing"" the hash or something along those lines for the block headers... and the more mining power, the harder the hash gets (difficulty increases). When the first person gets the correct hash, or gets the luckiest so to speak, they get the reward and the block is confirmed. Today, as the hashrate increases, large mining pools get larger and the difficulty gets too competitive for solo miners, it becomes impossible for a solo miner to get any rewards (unless you join a pool of course)If someone were to join the mempool completely solo, and attempt to mine a block (let's say they have insane, basically impossible luck in bruteforcing the hashes) is it technically possible for them from a theoretical standpoint to fully mine a block and get the 6 bitcoin reward all for himself? If I completely have the wrong idea on how this works, let me know and ill delete the post. Thanks, Alec

### Reply 1:
There is no 'fully mine a block', each hash is random and each hash has a specific probability of finding a block.It's purely random luck statistics for every single block mined.Same as rolling a dice - how often you roll the dice determines how often you 'expect' to get a 6.But anyone can roll a 6 on the first try (1 in 6 chance)Just with bitcoin the numbers are ridiculously much larger.Firstly, the dice has 2^256 sides (~10^77 or getting close to the number of atoms in the universe)There's also a number of the sides that count as a block (currently a little more than 8^19 or 9.0x10^22)So it boils down to probability, not 'yes or no'.So e.g. a 90TH/s miner currently has an approximately 1 in 11625 chance of finding a block in a full day of mining.So that leads to: 9TH/s is 1 in 116250 ... etc.However, don't extrapolate these numbers into the future, coz the probability changes every 2016 blocks mined.

### Reply 2:
Okay, thanks. This basically answers the confusion I initially had.

### Reply 3:
That's true, but I get what he means, and maybe OP is new to the game.People are trying to do what OP suggests with USB stick miners, aka ""lottery mining"". There's no harm in doing it, but you'd be better off playing Lotto every week, and I'm pretty sure the chances of mining a block with an ASIC in your home are still very remote. IMO it's far better to join a pool and at least earn something rather than be disappointed constantly by earning absolutely nothing--all while using up electricity at your own expense.But good luck, OP. Solo or pool mining bitcoin can be fun, but it's just not profitable for individuals these days.

### Reply 4:
Thanks for the response. I probably should have clarified that I am not interested in mining myself, I was just curious about how it works in a more technical aspect. thanks!

### Reply 5:
NO. You will need reason.

### Reply 6:
I thought I'd mentioned in this thread about how much USB miners were going for on eBay, but I guess it was another one.Nevertheless, I visited Bitcoinmerch today just for the hell of it, and they're selling the Gekkoscience NEWPAC miners at $79.99 a pop, and they're currently out of stock. I'm not even sure Gekkoscience even still makes these--I thought not, but there's no indication on the Bitcoinmerch website that these miners are used or anything.I found this blurb in the description kind of amusing:I don't know about the ""tweaking and testing"" but in 2021 these are lousy devices to ""get into mining"" and as far as spending a lot of money/burning power, that may be true but overall they're just a waste of money unless you're buying them as collectibles (or lottery mining, as OP is doing). I still love the history behind these and wish I'd been aware of bitcoin back when you could use a USB miner to mine enough bitcoin to break even and then hopefully make a profit. Anyway, just thought I'd share that and this thread is as good as any other to do it in I guess.

### Reply 7:
Well this area of the website is restricted to only btc mining.however the sha 256 algorithm has other coins with far less difficulty.quick easy mathBtc is 36000 a coinmystery coin 1 is 600 a coin it is about 60x easier to hit a block. still hard to do with a usb stick.mystery coin 2 is 120 a coin it is about 300x easier to hit a block. still hard to do with a usb stickmystery coin 3 is 20 a coin it is about 1800x easier to hit a block. still hard to do with a usb stickSo you would learn all of the above suck to hit a block.You would also learn that none of the above are easy to roi.buying a used modded s9 with 2 boards and brains+ software is more pratcial .It likely will not turn a profit. but it can do 5th at 400 wattsvs the stick which does 0.050 th at 25 watts since you need to run a rasp pi or some kin<rest of thread truncated>
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    ""hardware_name"": ""USB stick miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gekkoscience NEWPAC miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""used modded s9"",
    ""hardware_is_owned"": false
  }
]"
10149,"Date: 2017-01
Topic: Looking for Either Antminer S3 or S5 [UK]
### Original post:
Looking to purchase either an Antminer S3 or Antminer S5 for mining for fun . Currently got S1, U3 and U2 and want to have a little upgrade. I'm in the UK.

### Reply 1:
Youll be best to post this in the computer hardware <truncated> hardware.

","[
  {
    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U2"",
    ""hardware_is_owned"": true
  }
]"
10948,"Date: 2021-05
Topic: Bitcoin mining hardware
### Original post:
Hello guys, what are the top bitcoin mining hardware out there ?

### Reply 1:
Canaan <truncated> <truncated> www.bitmain.comThis is my top 3 list in this very order.

### Reply 2:
What is the current fastest Bitmain ASIC chip?

### Reply 3:
Hey Team, how do I place an order with bitmain these days? I remember back in the day they would announce on twitter when the miners are coming on for sale and everyone used to place pre-orders online. I don't see them coming online anymore. Please help thanks

### Reply 4:
They still have the shop, but they rarely have gear available for us commoners...<link> could also send an email to Bitmain and pray they answer you..You can also see the resellers, like Blokforge, Eastshore...

### Reply 5:
thanks HagssFINgood to hear from you!I feel like a dinosaur not been in the mining space for 2 years . Glad to see you are keeping the flag flying high!You were a wealth of information and good guidance back then and now.

### Reply 6:
now that they became big with miners money they dont carei emailed themthey took 2 weeks to reply with saying sorry only wholesale...my stolen account lowbander80 was legentarymining since <truncated>

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    ""hardware_name"": ""Canaan"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Bitmain ASIC chip"",
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]"
14839,"Date: 2013-12
Topic: How long to generate one block on my system?
### Original post:
I am currently mining in a pool, but was considering going solo. With my Asus Hd 7770 Graphics card how long will it take for me to generate one block? Also about how many Gh/s should I average? Thanks in advance for the <truncated>

### Reply 1:
Statistically, many years young padawan

### Reply 2:
What?!? How many years? Should I stay in a pool?

### Reply 3:
Yes years. I'm not sure how many MH/s you should get with that. Difficulty has made mining with graphics cards pretty much useless. If you want to have some type of bitcoin income search bitcoin ASIC on ebay. You can get a USB block erupter ASIC for around $50. (Still not worth it though). I'd say unless you're pushing a couple hundred GH/s don't solo mine.

### Reply 4:
Ok. On my pool though it says im mining at 143 Gh/s. It was 211 30 mins ago.

### Reply 5:
well your speed is measured in Mh/s and NOT Gh/s you should be around 210MH/s.you can't do solo mining with that.it's not even worth to mine on pool with that, at least not bitcoins.find some scrypt coin to mine with that speed while you still can.

### Reply 6:
<link>

### Reply 7:
this. You're in MH/s not GH/s which is considerably slower.

### Reply 8:
At 200 MH/s the average time to find a block is ~460 years and that assumes difficulty doesn't go up.

### Reply 9:
For lack of a better way of saying it...brute force is simply relentlessly brutal.

### Reply 10:
Q. How long to generate one block on my system? A. Not in this lifetime your's nor in next neither in next to it

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    ""hardware_name"": ""Asus Hd 7770 Graphics card"",
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    ""hardware_name"": ""USB block erupter ASIC"",
    ""hardware_is_owned"": false
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]"
13293,"Date: 2014-11
Topic: MOVED: Rejected ""Low Difficulty Share""
### Original post:
This topic has been moved to Trashcan.<link> too many dupe threads

",[]
20070,"Date: 2014-12
Topic: P2Pool Version Dirty?
### Original post:
I was looking for a P2Pool node to mine in and I saw that the version ended with -dirty. Can anyone explain to me what that means? Is it caused by altered code? It seemed most of the nodes with dirty had customer landing pages. I searched for the answer, but couldn't find any detailed answers.

### Reply 1:
I answered you in the other thread you posted in the Mining forum. Here's the copy/paste:I must have missed your question in the p2pool thread. It has to do with a git command. The version info is pulled from you local git repo of p2pool. Basically, in __init__.py, it makes a call like this:Code:git describe --always --dirtyAs you rightfully suspect, if you've added files to your local repository (for example, a custom front end), then git will return back that your repository is ""dirty"".

### Reply 2:
VaultMiner: The question should be in the p2pool thread only ........

",[]
22421,"Date: 2018-03
Topic: Bitmain sent 1 S9 with a different exhaust fan
### Original post:
I ordered a lot of S9's (January Batch) and all of them came with the Y.L. D12BM-12D Fan (yellow colored sticker). But one of them came with a Nidec Ultraflo fan. Putting my hand in front of the fans, it is clear that the Nidec is not as powerful as the Y.L.Should I be concerned? Anybody else have that fan? It just seems weird to me that machines from the same January Batch have different fans.

### Reply 1:
My S9 that I did a review about also had Nidec fans, no issues. <link>

### Reply 2:
My farm has at least 3 different brands of exhaust fans, all from one batch of miners... nothing to worry about.

### Reply 3:
I was just going to mention that I get 2-3 different fan types with my large orders of s9s. Its normal and if they put the fan on there, its good enough to get the job done.

### Reply 4:
I have seen the same thing on my miners. Interestingly, I have one miner that always runs much cooler than the rest and that one has the Nidec Ultraflo fan on it. I have actually tried to find more of those fans as I am considering replacing the fans on the other miners but so far I have not been able to find a source for those fans.

","[
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    ""hardware_name"": ""Y.L. D12BM-12D Fan"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Nidec Ultraflo fan"",
    ""hardware_is_owned"": true
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]"
16431,"Date: 2023-02
Topic: Mining Facility container or hangar / Staff / Monitoring questions
### Original post:
Hi everyone,I'm thinking running a hosting facility as I have access to very cheap elec (1cts $/KWH). I have approx 2MW available now and probably more, elec is from grid. I have a 800m hangar nearby the transformer + 3000m open air secured property.I was wondering what is the best option. Should I run couple of ""ready to go"" mining containers or is it better for me to set up the hangar as a mining place and run the miners inside the hangar?Also 2MW is approx 650 S19 miners. Do you guys have an idea how many staff 650 Asic require in terms of basic hosting?Last but not least, what SaaS/app a mining facility is using for their client to monitore the miners?Many thanks for your feedback,L

### Reply 1:
I think the hangar is enough as long as the space is sealed and if you know how to filter the air in and hot air out with proper ventilation.About staff I don't think you need many staff but I think 3 or 5 staff is enough.About the app or tools to monitor them awesomeminer is known tool but there is a free one from Bitmain from this link below- Antminer Monitor and Management tools

### Reply 2:
2mw x .8 = 1.6 megawatts so 3k watts x 500 = 1.5megawattsso you may be able to run 500-550 not 650the s19 exhausts 500+ cfm. so 500 x 500 = 250,000 cfmthis means you need30 of these<link> with a way to let air in.All rough numbers but kind of what you may need for what you want.<link> x 700 = 21000 for exhaustmetal filters for intake help<link>gold merv 8 washableyou will need a lot of them for intake. maybe 60 of them.so 60 x 60 = 3600duct work will be needed.a lot of cabling is needed.a lot of shelf maybe 15 sets of them.they need to carry weight well.<link> carry 600 pounds that is 20 pieces of gear per shelf so 25- 30 sets30 x 220 = 6600so 6600 = shelf 3600 = filter21000 = fanpower cables are complex a lot of ways to set gear up with cables but 500 of them will costpdus will costI run 60-100 units of gear we have spent a lot setting up a warehouse .you may want to go the container route.

### Reply 3:
The staff issue is actually a big one.You will find it difficult to find trustworthy people to run the mining facility.Mining is all about generating money, so most people have few qualms about getting a hold of some of that ...One simple example (that I've seen) is the staff redirecting some of the miners to their own mining accounts.Another is using the power with their own miners.Another is staff getting (illegal) kickbacks from ViaBTC to have miners on ViaBTC.Another is staff (unnecessarily) given access to the pool mining accounts and fudging things there.Generally you need to lock down the network in your facility and limit access both ways - to the miner and from the miner.Of course you also need the usual firewall stopping all remote access to miners.You also need a mining account that gives different owner vs staff level access to the mining data and account.There are of course various ways to handle this.

### Reply 4:
Why did you multiple 2MW with 0.8? Does 0.8x used to consider PSU efficiency?

### Reply 5:
24/7/365 power use means you have to derate the power by a factor of .8this is to prevent wires from melting.So if he has 2000 kwatts or 2 megawatts in transformer rating x 80% gives the proper safety factor of 1600 kwatts or 1.6 mwso 1600/3 = 533 s19 units doing 3 kwatts each.As for proper staffing a lot depends on the op and his or her knowledge of mining.500 units can be done on 2 routers each with 1 pc and 250 miners. this means 2 internet lines. which is a decent idea for redundancy.500 x 100 = 50ph hash or50000th hash50000 x .071= 3550 usd a day.as for fear of viabtc and referral misuse, here is my viabtc referral<link> join viabtc with that referral and I get a piece of the fees viabtc is collecting. you the miner do not pay extra.so obviously this means by working with 1 outsider you have a record of your miners since the outsider gets the hash rate number and th referral fee.so at no cost to you you get a free check on your hashrate by some one you trust.it does not have to be my referral .So if he opens an account with 250 miners. doing 25ph from 1 router he can glance at his viabtc stats on his account and he can check with the person that has his referral to see if it m<rest of post truncated>

### Reply 6:
I was not referring to referrals.ViaBTC was giving (illegal) kickbacks.

### Reply 7:
oh did not know that.thanks for info.

### Reply 8:
How the hell is a referral illegal kano you need to lay off that pipe. Pretty much every major pool gives some incentive to get others to signup. Oh wait american express gives illegal kickbacks when you refer someone to signup!

### Reply 9:
Not so sure how those kickbacks are done that kano refers to.Back to setting up a mw mine.you need at least 2 large transformers. say 1mw each<link> are 187000 each btw you need them for the containers and or a<rest of thread truncated>
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    ""hardware_name"": ""Antminer Monitor and Management tools"",
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    ""hardware_name"": ""PDUs"",
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    ""hardware_name"": ""transformers"",
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]"
7236,"Date: 2014-03
Topic: {BFL} Butterfly Labs will give their customers a FREEEEEE ""Monarch""
### Original post:
BFL gives you lots of things <truncated>

### Reply 1:
o yea, they will sure do it ... how can u open such topic ? ...

### Reply 2:
Wow, bfl is such a scam, people should remember their 15 months long lies...

### Reply 3:
I think its a great topic... Cointerra is going the extra mile to HELP their customers and not just to use them for their own Glory. Butterfly Labs uses their customers for their own Glory and to ONLY to Build their own Empire.

### Reply 4:
I have to admit, I've always been pretty amused by the butthurtness against BFL... but I'll explain why:I came across a guy on ebay selling pre-orders for jalapenos at $600 bucks as early as July 2012... after doing a bit of research on the new ""ASIC"" devices that were being imagined, I looked up BFL's site directly and saw they were selling pre-orders for $150. I thought, ""this is as big of a gamble as the $400 I spent on buying bitcoin at $6 and now its at $10, so what the hell.""Sure, I saw they were supposed to ship in October and it was August 2012 at the time, but I had just sold a bunch of crap on ebay and had some paypal money sitting around. So I went for it. Since I was/am a believer in the future value of Bitcoins, there was no way I was going to spend (and potentially lose) 15 bitcoins on it, but $150? Sure, that's essentially nothing since it won't be worth $150 if spent later. October came and went..... and I'd almost forgotten about the purchase. Then came the beginning of the great mania of early 2013 when the price started climbing....$20, $30, $40, $65.... that's when I started looking at what happened to that $150 I'd spent.... and that was when I first found the <rest of post truncated>

### Reply 5:
It amazes me how ONLY newbies accounts are giving positive feed back... for all I know this is probably another Inababas/Josh's accounts but hey thanks for the post YOU should keep on buying from BFL, hope it goes well for you

### Reply 6:
I don't understand this logic at all. If there's no way you were going to spend (and potentially lose) 15 Bitcoins on it, then why did you not simply buy 15 Bitcoins with that $150? Obviously that was the most valuable option, since in your mind, the Bitcoins were worth more than the miner, and the miner was worth more than the $150.As for people who feel they got ""screwed"" by BFL, I have no sympathy. They are a largely unregulated company, and you pre-ordered from them. It was a risk, a bet that you lost. Sorry, but that is no fault except your own.Full disclosure: I had a first-day preorder for 60GH/s units from BFL. I spent 450 BTC on them, and made maybe 100 BTC back at this point. I would have been far better off simply holding the BTC I had, but that is a lesson learned, and I don't hold anyone but myself responsible for it. People who are butthurt about it should learn from their mistakes and stop pre-ordering miners.

### Reply 7:
Very true, Just for the record I am butthurt lol :0) but Ill get over it in 2 weeks LOL ~ But like I said, I don't want others to make the same mistake WE made

### Reply 8:
The sad part about this is that you try so hard to prevent people from 'making the same mistake' you did, yet you go so over the top that you actually end up promoting the company instead of hindering it. Your keep the BFL name right up there are the top for all to see, and the average person who reads it will basically roll their eyes at the rabid posts by all the Butthurt Fairy Lads who feel it is their civic duty to point out every little mistake as if it were a crime against God.Caveat Emptor is all that needs to be said, in truth about ALL asic companies, but there are fools out there who seem to think they can still strike it rich. It's the California Gold Rush all over again, and the guy selling shovels is the only smart one in the bunch.

### Reply 9:
Very true :!) but I don't like the Shovels BFL makes. I would much rather warn and inform my fellow miners about the shovels out their Also if you google BFL and look up reviews, the main one out their are negative and my post are one of the TOP 10 negative reviews

### Reply 10:
No such thing as bad advertising right BCP?I'd have to disagree.

### Reply 11:
I'm sorry, but if you ordered a Monarch it is your own fault. You'd have to be a retard to think that they were going to deliver it anywhere near on time when they said they would. You would know this if you did any research at all in to BFL. And if you didn't do any research, again, it's your fault. I do feel bad for anyone who ordered pre-Monarch products like the Jalapeno etc. But the Monarch. Ya that's your own fault buddy.

### Reply 12:
I love your signature but you left BFL out :?)""newbs: a lot of great people in the world of bitcoin, but also a lot of scammers and assholes, like Jon Montroll / Ukyo of bitfunder / weexchange, so be careful !""glendall

### Reply 13:
Then th<rest of thread truncated>
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    ""hardware_name"": ""ASIC devices"",
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    ""hardware_name"": ""60GH/s units"",
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14437,"Date: 2011-08
Topic: Bitcoin Mining with 1x 5850 in the UK
### Original post:
Hi guys I am currently doing a bit of practise mining with 1 hd5850.I am using a watt meter to measure the amount of energy currently being used from my PC1 card mining = 200watts total consumption for my PC.Standard rate electricity costs:16.62p for first 2kwh/day then 13.32p so in 24hours = 33.24(10hours at 16.62) + 37.296(14hours at 13.32) = 70.536p/day.Mining at 290Mhash/s so 0.14btc/day average. at 10/btc = 1.40. Or currently 6/btc so... 0.84pProfit today = 13p...With a second graphics card it would be an extra 100watts but double btc/day (300watts with 1.68/day + less electric costs relatively).Is there something wrong with my calculations or is mining basically a break even process at the moment for a casual miner with just one card?I will be switching to a different electricity plan soon which will mean cheaper electric for the more I use. This means if I start mining with more cards, there should be more <truncated> it appears that mining is currently not really worthwhile any longer for a casual miner unless you get your electricity for free?I hope to get another 5850 at some point, but even then the profits will be marginal.Any thoughts?

### Reply 1:
Most likely you already use 2 kwh/day before accounting for the rig so you should calculate at the 13.32p rate. That means it costs you 64p290 actualy should generate 0.154 btc a day so thats 28.4p a dayIn all honesty though you really need a rig that has 4+ cards in it. For example my best rig which is 5 5850's requires about 1000 watts and generates about 1.925 ghash. That's 1.025 btc a day. Using your rate for electricity it costs 3.20 pounds a day. Making 1.025 btc a day and subtracting the electricity would be 2.95 pounds per day.Keep in mind though the price may go up in the future and any btc you don't sell now could be worth alot later on. Lets say you didnt spend any btc and just paid your bill for a 2 months and then it jumps to 18 pounds a btc. That means the 9.24 btc(I realize this isn't exactly accurate) you saved up is worth 166.32 pounds. The cost in electricity for the 2 months would be 17 pounds. That means you made 149.32 pounds so its all about when your willing to sell your bitcoins.

### Reply 2:
You're correct. Profits are there, but marginal. You're not going to be able to quit your job or anything (unlike early June '11, where that looked to be quite possible!)Unless you have a serious number of cards (= decent investment of $$$) you're looking at pocket change, not ""money that folds"".Plus the profit potential varies widely by geographic location -- climate, electricity rates, etc.

### Reply 3:
18 pounds a BTC -- isn't that $30?I think there are a lot of people (even among miners) who have accepted that $30 isn't coming around again any time soon -- if ever.I personally would be ecstatic to see $15 again, nevermind $30.After this long at $9.50, if we hit even a modest spike to $12 there would be a massive flood of selling. It's human/market psychology.

### Reply 4:
I gave a 2 month window. So while I agree its not very likely to get to 30 dollars a btc again its entirely possible.At the very least you can expect the price to go back up. If bitcoins is going to be successful in the long run we will need to be able to buy a bigger variety of items then currently. If that happens it will drive the price up because people will start using it for things other then speculation. I was just pointing out its not really wise to sell right now if you think bitcoins will succeed the price will go up.

### Reply 5:
Where did you get 10/btc from?Closer to 6.25/btc atm.We all hope it goes back to 10/btc (and higher) but most exchanges you can't even get $10/btc.That will mess with your maths too.At todays prices mining isnt viable for a lot of ppl, some have stopped. Many still mine hoping the coin they produce today will be worth more when the market recovers.I am also sure you can get more than 290Mhash/s from a 5850 depending on how much you overclock etc, some ppl get 400+Mhash from 5850s which will also alter the result of your calculations

### Reply 6:
The 10 was just a nice number/ good case scenario.I need to look into overclocking (Not tried yet) But must take into account that the more you overclock, the more power used, so need to find the balance! The watt meter should be very useful for that

### Reply 7:
I assumed that the price he hopes for.You might be right I assumed at those speeds it was a 5830 but he said ""another 5850"". With a single 5850 you can definitely achieve 400+. When you have 5 5850's with an inch gap between them you should expect around 385.

### Reply 8:
I HIGHLY recommend contacting the user teukon. He has the best megahash per watt out there for the 5850. He said it in some thread in the hardware section but I'm way too lazy to find it.

### Reply 9:
My PC is my regular PC as well as a miner. I have 2 remaining PCI express slo<rest of thread truncated>
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    ""hardware_name"": ""second graphics card"",
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22852,"Date: 2019-01
Topic: whatsminr m3x problem!
### Original post:
hello.my asic is m3x . my asic hasrate in consol is 12 TH/s but in pool has 1-6 th/s .what is this problem?my asic temp is 81 and ethernet is very good.but i dont know this problem!:(

### Reply 1:
Neither do we, because you don't provide any details like system logs etc

### Reply 2:
first thing, move the topic to mining support.second thing, there are a few common causes for your problem, you need to troubleshoot them 1 by 11- The pool suck! try another pool.2- make sure you chose a pool server that is in a close location to yours, if you are in USA you don't want a server in east Europe.3- your miner is over-clocked, many shares get rejected/stale.4- your router drops some packets, check your router firewall, try a different <truncated> must understand that the pool has no way of seeing the hashrate on your miner, it makes the calculation based on the shares your miner submits, so whenever you see lower hashrate on the pool than on your miner, it simply means the shares are not getting delivered and accepted by the pool.

","[
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9541,"Date: 2015-12
Topic: [Guide] Dogie's Comprehensive Technobit HEX4M [HD]
### Original post:
Hey guys my hex4m has this particular problem:it's timing out I've tried lower and higher values for the nonce-timout setting in cgminer nut this seems to be the best I can get out of it? Sometimes it runs smooth for a few minutes without the reset error and then it goes at around 400gh and every once in a while it will just give so many of the reset errors that it's hashrate drops down to avout 100gh for a minute or two.I just used the cooling paste that was on the bottom of the freezer pro 7 but if this was overheating i should be able e to feel heat on the pcb around the chip and it's room temperature pretty much not hot at all...anyone had similar problems?

### Reply 1:
Hi,Check if all collars are good connected .then try 1016/820 or even 840

### Reply 2:
1016/830 makes it 90% stable @ 396-398 Gh But with ~4% rejects Should I change the nonce-timout settings?Does this just vary per board? Because I am about to buy eight more. Is it still possible to overclock this board further?I'll try 835 and 840 next since the board is still pretty cool not getting hot at all just a little warmNice design guys! Except you forgot to drill the holes in the bottom heatsink for the 4 thingy's that it stands on so its not standing very stable but I guess that's just because I got 1 of the 1st boards from the BA fiasco?

### Reply 3:
what settings are you using? and what wattage does it use? also, what should <truncated> be set at and what does this setting do exactly? I seem to be getting a lot of stale shares...

### Reply 4:
My boards wont run at all at the default clock speed. Its pretty terrible.I can get them to run at 512/820 ... about 200 gh/s. Any faster clock speed and they die. I must be doing something wrong.At 200 gh/s these aren't worth it...

### Reply 5:
drop me PM with TW access

### Reply 6:
What is your setting? All of them, not just 512/820 <== what is this anyway (sorry, i am noob)What is your power supply? Brand & typeWhat is your controller? Tplink, Rpi, PC ....Please post some picture, cgminer screenshot maybe

### Reply 7:
I have varied the clock speed and voltage quite a bit. These are the other <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : ""780"", < This one I have played with a <truncated> : ""4:875"", < And this one.I am running this off windows with the CGminer version for HEX boards. I have run off a TPLink too.Power supply is a Dell server PSU. Pushing out about 750 watts. Powering a single board.I get tons of the nonce errors.

### Reply 8:
If you want to achieve maximum speed, do not change chipmask, voltage & options from default. You can play with <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : ""820"", ""hexminerm-options"" : ""4:1024"",

### Reply 9:
I am using the TP-Link controller and I am suddenly getting this <truncated> Version] => 20140922cgminer: 4_5_0_9afd0a2Socket connect failed: Connection refusedAnyone have a clue what to do to get this back up and running?Ok I thought I had it but the error keeps coming.

### Reply 10:
Ok I have overcome that with several reboots of the TP-Link.Now it is up but not mining when it did before. So dam odd.Code:[Firmware Version] => 20140922cgminer: 4_5_0_9afd0a2Reply was <truncated> <truncated> <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work <truncated> <truncated> <truncated> Diff Count=62,Max Diff Count=62,Times Sent=2,Bytes Sent=155,Times Recv=9,Bytes Recv=5978,Net Bytes Sent=155,Net Bytes <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work <truncated> <truncated> <truncated> Diff Count=1,Max Diff Count=5,Times Sent=2,Bytes Sent=166,Times Recv=8,Bytes Recv=76360,Net Bytes Sent=166,Net Bytes <truncated> =>( [STATUS] => S [When] => 1416098024 [Code] => 70 [Msg] => CGMiner stats [Description] => cgminer 4.6.1)[STATS0] =>( [STATS] => 0 [ID] => POOL0 [Elapsed] => 92 [Calls] => 0 [Wait] => 0.000000 [Max] => 0.000000 [Min] => 99999999.000000 [Pool Calls] => 0 [Pool Attempts] => 0 [Pool Wait] =<rest of post truncated>

### Reply 11:
Check all the values on all the miner config pages are filled.

### Reply 12:
They are. I did not change them.Here is the Minion page.

### Reply 13:
On all the pages? Sometimes some go blank when you flash new firmware. If you havent then I'm not sure.

### Reply 14:
I just double checked all the configs have populated fields.Does this setting look good? I cannot remember if I changed USB Detect errors box or not.

### Reply 15:
dogie mean to check all other miner(rockerbox, be200, A1, avalon, bitfury, nanofury, etc) setting page too. If all checked then restart your router, probably dns problem.

##<rest of thread truncated>
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    ""hardware_name"": ""hex4m"",
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  },
  {
    ""hardware_name"": ""freezer pro 7"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Dell server PSU"",
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2657,"Date: 2014-01
Topic: [Group Buy 1] Avalon 200Gh/s SHIPPING NOW!!
### Original post:
On document:On forum:Why?

### Reply 1:
does anyone recieve anything?

### Reply 2:
when it will be shipped?

### Reply 3:
Hi, Sorry I do not set the price - the factory accepts Bitcoin to match the USD price of the order. Float pointThanks

### Reply 4:
No one from here has made official order I have sent emails now to everyoneTonight I make orders for people that send the document back

### Reply 5:
When ordered is cleared by the factory then you make paymentThanks

### Reply 6:
Just want to say a thank you to @icet208 for being my first buyer on hereThanks

### Reply 7:
it look very strange that you have access to Avalon's and selling them but also try to purchase additional Ant for 2.2

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    ""hardware_name"": ""Ant"",
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19546,"Date: 2014-07
Topic: CPU mining problem
### Original post:
I'm mining with <truncated> doesn't shows my working <link> also try to mine with gui miner but it says that connecting, but realy didn't connected

### Reply 1:
You're really trying to mine with just a CPU? I doubt 700KH/s will show up.

### Reply 2:
It doesn't look like it's finding any shares to submit. The pool will only show estimated hash rate according to how many shares you submit.

### Reply 3:
first question what gear are you using? a pc ? many pools no longer allow cpu mining . you are on slush pool i am not sure he allows cpu mining

### Reply 4:
IF anybody want to help me just a minute come to my computer with teamviewerID:489 755 233PASS:1765of course I'm using <truncated> pool allows CPU mining ?

### Reply 5:
<link> is the pool thread for slush pool just go to it and ask if using just a cpu to mine is still allowed.at this point in time cpu mining is really slow like a snail compared to a jet plane. I do not know if any pool allows cpus to mine for btc anymore.

### Reply 6:
thank you .......

### Reply 7:
I'm using Guiminer but nothing is shown on <link> <link>

### Reply 8:
GUIminer does not do CPU mining anymore. The CPU affinity buttons are to allocate CPU power to GPU management only as some algos require a lot of CPU time (~90%) whilst others require less (10~25%) depending on the hardware setup.No CPU mining going on there...to the best of my knowledge...

### Reply 9:
ramchik, you are wasting your electricity. Even if it was free it's just pointless to mine the way you are doing it. Either you need to spend a little money and buying some cheap older ASICs like a block eruptor USB stick or just buy your bitcoin from somebody here.

### Reply 10:
just suggest to you ramnchik never use your PC for mining because it will burn you PC soon and not comparable to what you get better than you buy some mining HW than use your PCif u want mining use you PC maybe you can try use altcoin not btc

### Reply 11:
You are using Nvidia GPU, futher more, a older one. It is hard to even get a share. AMD GPU are more suited for mining purposes although they are too, getting inefficient. Try to get a BTC ASIC if not, you are wasting your time. The best would be investment into BTC rather than mining as they are hard to ROI. You can also mine some ASIC resistant coins.

### Reply 12:
seriously?cpu mining? for BTC??bro, u should just stop it, Planet earth will say ""thank you""

### Reply 13:
My old settings with slushstill works with the CPU but no point to do so but just for the fun of it leave it open .....minerd.exe -o <link> -u XXX.2 -p 1234 -a sha256d -R 2

### Reply 14:
Agree, but they can use it to mine CPU coin instead and would be better off..

### Reply 15:
No CPU is profitable unless you have free electricity currently - check the numbers.Even with free electricity almost every CPU based coin like XPM has now been converted to a GPU coin, so just like BTC you won't earn any.

### Reply 16:
If you want to see some results even small mine scrypt with a multi pool like ghash or scryptguild and convert the LTC/doge/ etc to BTC you will earn some coins.

### Reply 17:
dude after this you should stop mining bitcoin using CPU

### Reply 18:
Forget it OP, you won't get anything but just wasting electricity and your time.

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    ""hardware_name"": ""CPU"",
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    ""hardware_name"": ""Nvidia GPU"",
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    ""hardware_name"": ""AMD GPU"",
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    ""hardware_name"": ""BTC ASIC"",
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    ""hardware_name"": ""block eruptor USB stick"",
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21492,"Date: 2017-08
Topic: upgrading antminer s9 firmware
### Original post:
Hello, I have an older S9 12.93 without autotune. First, do you recommend upgrading the firmware?Second, to upgrade do I use this file: <truncated> or this file: <truncated>

### Reply 1:
If it's running fine and you're getting good numbers poolside, don't do it. Firmware should only be done if you HAVE to.

### Reply 2:
Great thanks!

","[
  {
    ""hardware_name"": ""S9 12.93"",
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]"
5639,"Date: 2013-07
Topic: Avalon Voltmod?
### Original post:
Hey folks,is there any way to give the chips more Volt? (I know there is much more needed then air cooling).I get lots of HW errors with a frequency higher then 365 and I think they need a little bit more volts!. The temperature of the chips is only at 45-50C! (max is 70 in the chip spreadshet) so I could give him a bit more overclocking.

### Reply 1:
The only problem is everyone is too scared to fry their precious avalon chips.

### Reply 2:
I think the real problem is the regulator chip is only rated at 20 amps.So I don't think increasing the voltage will help much or not at all.But to answer your question.The resistor at R10 is a 10.5K ohm resistor if you were to replace it with a 10.0k ohm resistor you would increase the voltage a few hundredths.I suspect Avalon has already found that the 10.5K ohm resistor is the best value to use it sets the voltage at about 1.15 volts.

","[
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    ""hardware_name"": ""R10 resistor"",
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18500,"Date: 2014-01
Topic: 4x 280x mining rig on Asrock 970ex4, windows 7 doesn't detect gpus
### Original post:
Hi,I'm trying to let windows 7 32bit to detect all my 4 gpus (2x vapor-x 280x and 2x asus directCUII TOP 280x) with no luck.I'm using 3x powered riser cables (1x to 16x) and 1 gpu directly attached to the motherboard (ASrock 970 extreme 4).All I can get is having two cards detected, sometimes a get a third but windows sees it as a HD7900 I've no jumped the pins because I heard my mobo doesn't need that, but probably I'll give it a try...Should not be a power issue, the risers are powered and my psu should be enough (1300W coolermaster gold)Anyone with a similar <truncated> pins you used? With the dummy plugs?

### Reply 1:
might be a windows 32 bit issue? Maybe I need the 64 bit version?

","[
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    ""hardware_name"": ""vapor-x 280x"",
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  },
  {
    ""hardware_name"": ""asus directCUII TOP 280x"",
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    ""hardware_name"": ""powered riser cables (1x to 16x)"",
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  {
    ""hardware_name"": ""1300W coolermaster gold"",
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]"
3995,"Date: 2018-03
Topic: UK ASICminer Blade and Cube group buy #9
### Original post:
put me down for 2 (cubes that is)

### Reply 1:
put me down for 1 of the cube pls

### Reply 2:
whats the power usage on the cubes?

### Reply 3:
I think i read somewhere it was 150w

### Reply 4:
I am just hoping they com in under 1.5 BTC as that is all I have atm

### Reply 5:
me 1.5 is good max, but i doubt it for some reason, the blades are 1.1, rough sum , multiply by three put in a slight discount itll maybe be around 2.5 to 3btc

### Reply 6:
ok but the 10gh blade is 1.1, they will squeeze us out here in the west

### Reply 7:
<link> more info

### Reply 8:
Hi i asm after 50 of the cubesi can offer 1.3 btc each cash on <truncated>

### Reply 9:
I'll do a tentative maybe on a Cube, price dependent.

### Reply 10:
Those cubes/boxes, are they actually shipping from china merchants?

### Reply 11:
No, I'll be getting it from the EU reseller, YXT - when he has them in stock.

### Reply 12:
Put me down for 2 cubes at the moment please.Thanks

### Reply 13:
Hi OutCast,Put me down for one of those little cubes, I will transfer the btc just before the order goes in (by bits are tied up in CEX at the moment (sounds painful))Thanks

### Reply 14:
Hi Outcast3k, price dependent but please put me down for 3

### Reply 15:
Hi, put me down for 35 depending on price of course.

### Reply 16:
Photos of the cube miner from a UK seller on eBay

### Reply 17:
@CroverNo01 next time, make sure the images are bigger /s lolLooks quite nice though

### Reply 18:
You can buy them direct from China now! They also consume 360WCheers sorry for large images

### Reply 19:
keep this thread on topic, please

### Reply 20:
Sorry, just wondering if you are selling the power supplies as well as seen they need to be certain Amp or will blow the boards

### Reply 21:
I'm unsure about this right now, I'm still waiting for clarification on the finer details from YXT, once I know for sure (should be a day or two) I will update the original post.

### Reply 22:
looking at the pictures seems you will have to use your own psu with two pci-e 6 pin

### Reply 23:
outcast put me down for one depending on price

### Reply 24:
interested in one cube too.

### Reply 25:
For PSU, I'm thinking something like the Corsair CX750 will be ideal if you're running 2x Cubes. They have decent thick cables, and two pairs of 6-pin plugs. They also don't mind running at heavy load at 12v only - other older supplies freak if they're asked to supply 12v with no load on the 5v/3.3v lines.I run 2x Blades and several 12v supplied USB hubs, 5x fans, and an OpenWRT router (soon to be replaced by a RPi) off my CX750, and it's been perfect for months. The CX750 replaces a Zalman 1000W unit that couldn't run 1x Blade because of the lack of load on the 5v line.

### Reply 26:
I'd like 2 cubes, please.Payment to follow closer to order time (CEX, she be a harsh mistress).

### Reply 27:
Do I need to use a fuse in the socket on the units in the photos? If so, it looks like a mini blade fuse, but how many amps?

### Reply 28:
10 cubes please

### Reply 29:
I think its gna be 1.99btc

### Reply 30:
Cube me twice my man - depending on price of course

### Reply 31:
resellers are putting it at 1.99BTC , despite the fact it could only ever mine about 2.00-2.25BTC

### Reply 32:
if you got it today.

### Reply 33:
Yup that wouldn't leave much room for profit - but wait and see...

### Reply 34:
guys you all know were based in the UK. the price we will get it at will be greater than 1.99 btc due to vat charges

### Reply 35:
How strict are you on the ""UK only"" part? I mean, Holland is just across the sea... that's close enough isn't it?

### Reply 36:
well yxt will have to pay vat on them and in turn those costs will be passed onto us.its been the same with all uk group buys. you will see international group buy prices have always been low. example the blades are going for say 0.65 yxt sells them at 0.79btcso don't keep your hopes up for a 1.99btc price

### Reply 37:
Don't forget my 2 OC - I don't see me listed buddy

### Reply 38:
Ill take 2 cubes

### Reply 39:
Quoting myself yay.Anyway, if you don't want to ship it, we could discuss a pickup. I love england, so might as well make a trip out of it

### Reply 40:
Heh I don't mind if you want to come and visit, but! the person I will get them from (YXT) will likely ship to Holland for you, if he cant, I don't mind.

### Reply 41:
americans are shipping cubes tommorow 1.75btc<link>

### Reply 42:
2 cubes please, depending on price

### Reply 43:
itll be yxt for us

### Reply 44:
more pics here: <link> your blade prices are out of date

### Reply 45:
EU and UK get short end of the stick again

### Reply 46:
We need our own products especially u.k. where are way behind.

### Reply 47:
there is only one other resell with units in hand, afaikso not too bad this timebest would be to fundraise own asics with a mining cooperative

### Reply 48:
yxt, hijacking O<rest of thread truncated>
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    ""hardware_name"": ""ASICminer Cube"",
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    ""hardware_name"": ""Corsair CX750"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Zalman 1000W"",
    ""hardware_is_owned"": true
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]"
23463,"Date: 2021-03
Topic: Is the S19 control board compatible with the S17 miner?
### Original post:
Does anyone know if the S19 control board compatible with the S17 miner? Has anyone tried it and been successful?I sent the question to Bitmain support a week ago and haven't received an answer.The instructions for setting up an S19 control board on Bitmain's website say that replacement S19 control boards are shipped with S17 firmware, so it seems like it would work. But it isn't explicitly said anywhere.<link> S17+, and S17 control boards are also sold by ZeusBTC, so I asked them if their S19 board could be used in a S17 and they just replied ""No"", with no further explanation.

### Reply 1:
I asked someone and they said you could use the same control board on both S17+/e and S19, he said he is 90% sure but I want to be 100% before I give you the final answer, and thus, I asked another person and posted in a telegram group to see if all 3 answers match, which I think, they will. I will let you know when they reply.Edit:Final Answer: S17+ / S17e and S19 use the same control board

","[
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    ""hardware_name"": ""S19 control board"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S17 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17+ control boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17 control boards"",
    ""hardware_is_owned"": false
  }
]"
5555,"Date: 2013-06
Topic: Is there a reliable re-seller of Avalon chips for testing a new design?
### Original post:
We would like to buy 100 of the Avalon ASICs for testing purposes of a new PCB.Is there anyone out there with a supply that can ship today.

### Reply 1:
Are you joking, or not paying attention? Avalon hasn't shipped any bulk chip orders yet. The only thing they have shipped is sample chips - 30 sample chips to each person who has ordered; those have largely been distributed to existing board developers.Nobody can ship you what they haven't received yet lol

### Reply 2:
Has anyone ordered from <link> Ailbaba?Just wondering if this is a scam we are wanting a few for testing a new PCB.Also good to know that the Bitcoin community hasn't lost there sense of humour.

### Reply 3:
Might be sample chips or scam, cant know for sure until you bought some ^^

### Reply 4:
I know for a fact that the samples are shipped in another casing...This is how they arrived here:<link> 10000 chip batches have not yet been shipped by Avalon. We did recieve an email saying it will be not long from now.

### Reply 5:
Can you test just one and let us know if they are real?Thanks

### Reply 6:
Are you totally clueless? Or are you attempting to bluff your way through PCB design without reading anything in these forums?!!

### Reply 7:
Interesting, why would I try to bluff anything? I dont understand your comments. Its very simple to test a single chip just because its screen printed with a logo doesnt mean its authentic. It was a simple question if someone had purchased chips from the Alibaba supplier and got one working. Microchip and many other manufactures will produce screen printed semicustom devices in the same package for a small charge with a logo printed on it. I was also a hardware engineer for Cadence Design Systems in San Jose we did lots of ground up semicustom designs all the time. So can you explain to me why I am clueless?

### Reply 8:
Well you've either not read anything on this forum, or done any research, or you would know whether;1) An Alibaba supplier exists.2) Whether those chips are real.3) Why no one's reselling you 100 Avalon Chips.4) Why no one is going to resell you 100 Avalon Chips.It's quite rude to presume other people should and will do your own legwork. Search for yourself, read and do your own research. There's tonnes of threads on these very subjects.

### Reply 9:
If the Alibaba supplier is real and the devices are Avalon Spec chips why wouldn't they sell me 100 of them?I understand they are a high price but for the purposes of testing we might buy them, so what is your point?

### Reply 10:
The point seems to be it is vanishingly unlikely the alibaba scammers are anything other than scammers; having any real chips for sale is so unlikely only a total idiot would have bought one and such an idiot probably isn't a great electronics guy who can test it for you even if some kind of object looking superficially like a chip had even been received from the alibaba people.-MarkM-

### Reply 11:
Exactly why I was asking the question, thanks. One post here from ""Coinmining"" seems they have ordered the Alibaba devices. I was wondering if they have one functioning.It's ok though, others from this forum have offered a devices for testing purposes.and I would like to thank Bitcoin.de for the offer of help and the sample.Again thanks...

### Reply 12:
Of course it's not real, Avalon hasn't had the chips manufactured, let alone distributed yet, which you would know if you spent even 30seconds in any Avalon related thread (or most others).

### Reply 13:
Nope, read their post, those are the 30 samples they received from avalon after ordering 10,000.Why don't you order some from 'Shenzhen Goldtech' and come back and tell us the result?

### Reply 14:
It's just not cricket is it Bitcoinorama, some of us just have our heads down and our bums up in E-CAD after all we design it,that's right we invented (SCALD,@ Valid Logic Systems) then sold it to Cadence and no we have nothing for sale here and no per-orders! So fuck off.So next time your at KncMiner ask Johan if he need's a Cadence floor planner, why because the work done at opencores.org was sensational.and for all of you clueless people SCALD = Structured Computer Aided Logic Design

### Reply 15:
So what would you like me to post? a PCB, Chip?, a Whole new ASIC design? I'm not here to famous I just don't like banks.

### Reply 16:
Aww did I touch a lilwl nerve? Sorry should we all have expected you your eminence. I'll run and gather my research for you, a thousand pardons...Wtf? You enter here unannounced, asking n00b questions, 5 minutes in any Avalon thread could have resolved and then get bitchy laying down the 'do you know who I am?' card when called on your laziness. You seem real professional. Doubt ORSoC would have guessed who you are without you informing them in the first place either. Doubt you blunder your way through the iterative design proc<rest of thread truncated>
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18466,"Date: 2014-01
Topic: HW errors with bfgminer proxy and asic blades
### Original post:
I've got two blades running on bfgminer 3.4.0 proxy with a batch file and one blade will get lots more hardware errors than the other. I can restart the proxy and the errors may switch to the other blade. I created a batch file with : bfgminer --<link> 8332 -o pool -u user -p pass . Is there a better way to write the proxy? one blade will be at .48 HW errors and the other at 6.0 or more.

","[
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    ""hardware_name"": ""bfgminer 3.4.0 proxy"",
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    ""hardware_name"": ""blade"",
    ""hardware_is_owned"": true
  }
]"
8618,"Date: 2014-12
Topic: IN STOCK - OneStringMiner boards, up to 39GH/s, LAST BOARDS: US$35....FUN!!!
### Original post:
HiDid you still have DIY2 board for me ?I send you a PM...

### Reply 1:
I still have some available.No PM received, can you please send again?!

### Reply 2:
Latest prices excluding shipment:Product #boards GH/s outside EU price in $ price including VAT inside EU price excluding VAT for business ownersDIY 1 25+ $14.99 14.51 11.99DIY0 1 25+ $19.99 19.35 15.99DIY1 1 30+ $24.99 24.19 19.99DIY2 2 60+ $44.99 43.55 35.99Shipment is around us$40 to USA, around 22.50 to EU, 6.95 within the Netherlands.Send a PM with at least your zipcode and country and I will reply with the shipment cost.If you also specify what you would like to purchase, I will reply with the total cost in BTC too.

","[
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  },
  {
    ""hardware_name"": ""DIY0"",
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    ""hardware_name"": ""DIY2"",
    ""hardware_is_owned"": false
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]"
3996,"Date: 2018-03
Topic: [EU/UK GROUP BUY] Blue Fury USB miner 2.2 - 2.7 GH/s
### Original post:
The names changed from RedFury to BlueFury because the PCB and LED colour has changed from red to blue. The hash rate and everything else is the same.

### Reply 1:
Shame, I'd rather have had red. Blue LEDs already light up half the house - had to cover up the LEDs on the Anker hubs with insulating tape so we can get a bit of sleep.

### Reply 2:
The blue ones will surely be faster than the red ones - OC, you should call them NEW!!! SECOND GENERATION - that always goes down well

### Reply 3:
Don't be silly, they're like cars. Red ones are always faster.

### Reply 4:
Bluefury niceYou got any pictures from beastly mac To show off the blue

### Reply 5:
Blue miners won't be fabricated for another couple of weeks.

### Reply 6:
Keep them red. Please. Don't be sucked in to the ""Blue LED"" bullshit - everything has blue LEDs on it now, and they're a blight.

### Reply 7:
Hello OutCast3k,Please reserve 5, shipped to Spain. I will send 4.8 Btc as soon as my cash has been converted and the coins arrive in my wallet.Cheers

### Reply 8:
Hi OutcastCan you stick me down for 4 pleaseI'll work on exchanging some cash for BTCWhats the cut off date for payment please?

### Reply 9:
Does that mean we are going to get the redfury's for first week shipment in October. Or do we have to wait for the blue fury, and will shipment still be in the first week of October beastly macThanks

### Reply 10:
Beastlymac, told me via PM they're still on schedule for early October. I'm not sure the change in name made a difference but he'll probably comment later to clarify anyway.

### Reply 11:
@wedgy2k, 27th-28th of this month.@guyver, I've updated the OP now

### Reply 12:
Cheers outcast

### Reply 13:
Cool, I prefer blue LED's

### Reply 14:
Please reserve a 2nd one for me, OC3k. I'll send payment tomorrow/Tuesday (waiting for Bitcoin-Qt downloading the blockchain again, time passes FFS)

### Reply 15:
Ok Please reserve 5 for me so far. just have to get more BTC before I can order more.

### Reply 16:
Hi, Please reserve 4 for me. Will pay in a mo (I'm a fairly recent new member - just checking I can post out of the Newbie forum before I initiate the transation) CheersDemocratic Republic Of Dave.

### Reply 17:
Well that was easy.Buy x 4CheersDemocratic Republic Of Dave.

### Reply 18:
20 purchased, PM sent <truncated>

### Reply 19:
payment for 5 sent. <truncated>

### Reply 20:
Hi,Hate to worry you, but that transaction ID shows you've sent it to another address... (have you given me the wrong transaction id?)<link>

### Reply 21:
+3tx: <truncated> days

### Reply 22:
apologies <truncated>

### Reply 23:
Would like to reserve 2, will pay on 26th.

### Reply 24:
Can you please reserve 5 pcs. for me? thank you. Payment will be send today

### Reply 25:
Payment sent for my reserve of 2 USB RedFury Gizmos.

### Reply 26:
Payment send for 3 pieces. Thank You!

### Reply 27:
HI OutCast3k,You have a PM... thanks!!

### Reply 28:
Hi!Payment made fo 1 <truncated>

### Reply 29:
Payment for 5 pcs. <truncated>

### Reply 30:
Can you reserve me one? i have about half saved up so far

### Reply 31:
I reserved 1 but I managed to scrape enough coin together for <truncated>

### Reply 32:
Looking forward to seeing how these light up my room in the dark!

### Reply 33:
Anyone know if these things work with cgminer? Or a setup thread to read would be useful if some kind person knows of one...

### Reply 34:
Software is being updated - cgminer, bitminter and bfgminer.

### Reply 35:
I hope to be running mine off my OpenWRT miner-of-doom (TPLink TL-WR703N micro-router) along with the Block Erupters. Got to love running miners off a router smaller than a small matchbox, that also uses less power than one of the USB miners.

### Reply 36:
Thanks chaps

### Reply 37:
HiCan you reserve me 2 please just getting the funds together now

### Reply 38:
HiCan you reserve me 2 please. Btc are being gathered.Payment will be sent soon

### Reply 39:
Payment sent for a 3rd USB RedFury Gizmo.

### Reply 40:
Payment sent for my reserve of 4 Blue Fury USB miners

### Reply 41:
Please add 2 more to my reserved. so now 7 in total. will send payment tomorrow. thanks!

### Reply 42:
Payment sent for my 5 reserved USB BlueFurys to be shipped to Spain.Transaction ID: <truncated>

### Reply 43:
payment for my 2 reserved BlueFury usb's sentBlockchain <truncated>

### Reply 44:
Please reserve 3 pcs. for mewill send payment tomorrow or thursdayBest RegardsZlang

### Reply 45:
+10tx: <truncated> thanks

### Reply 46:
I'm in for 3 units. Waiting for funds to arrive in my wallet.

### Reply 47:
Payment sent and PM for 12 USB Fury... Blockchain ID: <truncated>

### Reply 48:
Payment sent for 2x RedFury (I refuse to call them <truncated>

### Reply 49:
Mix them in the same hubs as <truncated> re name them Traffic Lights

### Reply 50:
WOW! I do prefer the blue LED! That's great new! Long Live t<rest of thread truncated>
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    ""hardware_name"": ""Blue Fury USB miner"",
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    ""hardware_name"": ""Anker hubs"",
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    ""hardware_name"": ""USB RedFury Gizmos"",
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11952,"Date: 2012-07
Topic: CGminer - web monitor beta v0.4 [switch pools all rigs]
### Original post:
I have been attempting to figure this out but am having a bit of trouble. here is the output. from what i can tell with little understanding of php is that its not getting a connection to the box. i checked the pc to be sure the when cgminer starts the its says api is listening. Before i dig deep into learning php i am hoping its something stupid that i did or missed. Warning: socket_connect(): unable to connect [10013]: An attempt was made to access a socket in a way forbidden by its access permissions. in <truncated> on line 127 Warning: socket_send(): unable to write to socket [10057]: A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied. in <truncated> on line 130 Warning: socket_read(): unable to read from socket [10022]: An invalid argument was supplied. in <truncated> on line 131 Warning: socket_connect(): unable to connect [10013]: An attempt was made to access a socket in a way forbidden by its access permissions. in <truncated> on line 127 Warning: socket_send(): unable to write to socket [10057]: A request to send or receive data was disallowed because the <rest of post truncated>

### Reply 1:
Make it easy on yourself and install something line WAMPSERVER on your Win32/64 box on port 8888 or something like that, enable PHP Sockets in the PHP.ini file, throw your files in it's Apache Root, call it up and call it a day......IT WILL WORK IIS ? Just say NO....lol

### Reply 2:
I had a feeling you were going to say that . IIS can be odd with stuff like this. Never used WAMPSERVER. is that what your're running?

### Reply 3:
keep in mine for pool switching, v3 is snafu. use v4!

### Reply 4:
It's working flawlessly for me.....pool switching anyways.What was the problem you saw with v3 ?The only thing I have never got to work (regardless of app/front end...even local script/config file) was Voltage control (all Win64 Miners etc).

### Reply 5:
I am running exactly that, after fighting with IIS/PHP on Server 2008.......Same box now runs IIS on the usual ports and my WAMPSERVER simultaneously on port 8888, that I use for this purpose.Everything gets along fine.

### Reply 6:
Just got it running. i was making the task ""enable sockets"" so much more complicated then it needed to be especially since its a check mark. man i feel stupid but i dont care its working great.

### Reply 7:
Not work for me:apiSocket.php line 125

### Reply 8:
sounds like you need to enable sockets in your php.ini file. and restart.

### Reply 9:
Agreed. I got the same. enabled sockets worked fine.

### Reply 10:
Just a heads up - this is a PITA in linux as it requires raw sockets.I have tried ...Code:sudo /sbin/setcap cap_net_raw+eip /usr/sbin/lig<link> no luck. Anyone else have a suggestion short of wampserver

### Reply 11:
HOLLY CRAP !Something EASIER to get working in Windows that is PHP ?This is one for the record books...LOLI don't have any advice though, as I am a Linux moron.....or, maybe just a moron in general, but mine still works great (cgminer web app that is).

### Reply 12:
cgminer use Php infoCGminer - web monitor beta v0.4Firewall disabled.What am I doing wrong?

### Reply 13:
How can a noob set this up in windows.

### Reply 14:
Shouldn't you be concentrating on getting your pool back up?

### Reply 15:
I have someone working on it. Who ever got in, made a real mess of things.

### Reply 16:
Easiest setup is Wamp that I have found.

### Reply 17:
What is wamp.

### Reply 18:
WampServer is a Windows web development environment. It allows you to create web applications with Apache2, PHP and a MySQL database.

### Reply 19:
you dont need mysql.. just install apache and php, should work pretty easy..

### Reply 20:
Hey Jim, just a quick question if I could.....I am still using the 'account' field for the 'listtransactions' call as it's common to both SEND & RECEIVE (and obviously makes the array possible with ease), but have come across a small <truncated> to my Solo Mining Wallet/Bitcoind)I am able to get the label for incoming transactions but not for outgoing.In the list above, you can see that the 4 last transactions have labels as they are incoming, the first one does not as it is a SEND.....Instead of using 'listtransactions' and 'account'....is there another function that is common to both send and receive that would allow me to retrieve a label for both ?I still have the v0.2 code in place, just added to...so that I could display the last 5 <truncated> again for a kick ass script.

### Reply 21:
I think the short answer is no. not all sends have a label, i think most dont, you just send to an address. You could print the first bits <link>

### Reply 22:
i am getting ""Fatal error: Call to undefined function socket_create() in <truncated> on line 125""

### Reply 23:
looks like sockets are not enabled. sam<rest of thread truncated>
","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Server 2008"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Win64 Miners"",
    ""hardware_is_owned"": false
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]"
14617,"Date: 2012-12
Topic: Help setting up miner for OS X.
### Original post:
Hi All,Lets first assume I know nothing about anything. I run a mac pro on Snow Leopard 10.6.6 and have an Nvidia GeForce 8800GT card. I am attempting to get DiabloMiner up and running, join a mining pool and mine. At this point in time I have attempted to run the DiabloMiner-OSX.sh file in terminal. And I am met with this <truncated> Fifth$ /DiabloMiner-OSX.sh Exception in thread ""main"" <truncated> <truncated> by: <truncated> <truncated> <truncated> <truncated> Method)at <truncated> <truncated> <truncated> <truncated> Fifth$ From what I can see (googled the error message) this is a fairly common error message. Yet I can only find it displayed here:<link> question of 'what the heck is this and why is it doing it' is dignified a few times but the process to fix it is not explained in a method or using language I personally am familiar with. Would anyone help me out here?

### Reply 1:
Forget it man get a real PC that can be upgraded + run Linux and dump nvidia for ati.

### Reply 2:
yeah......not here to play fanboy. Just want an answer to a question.

### Reply 3:
Make sure you download the compiled version of the miner from the official diablo thread.That error message is essentially telling you that it cannot find the compiled app. I assume you downloaded this from github directly, and didn't run it through a compiler?If you get it from the official thread it should ""just work"".

### Reply 4:
went here:<link> the link <truncated> opened it up. dragged into a terminal. and I get that error message.

### Reply 5:
Yeah, that's the problem.Go here, <link> the ""official"" diablo miner thread. The first post is from it's creator (the same guy who has it at GitHub). However, unlike GitHub, in his first post he updates the ""Newest Binary"" link to have a version already compiled for you. If you download it from that first post you shouldn't have any problems running it with the DiabloMiner-OSX.sh script from Terminal.However, don't drag it to Terminal. Instead, open Terminal up and cd into the directory you extracted DiabloMiner in. Then run it... here is an example of my settings:Of course you'll need to change you're username, password, and which pool (and port) you use. And those -v, -f, and -w flags will need to be tweaked depending on which card you have... but those values should get you started.

### Reply 6:
Worked like a charm. You're a lifesaver man. Thanks. The only thing I'm unclear on is the login. Would I use my login to the mining pool site? to this site? which login?

### Reply 7:
Glad to hear it worked.It certainly will not be the login to this site.Which pool did you sign up for? I mine on Slush's pool, and he lets me register my miner's individually. So, each of my miners has it's own user and password, which is different from what I log into Slush's website with. Checkout <link>

### Reply 8:
As far as pools go, are some better than others? Is success and speed determined by the number of users?

### Reply 9:
old thread but just in case anyone every comes across it like I did and cant get their miner setup for OS X..The above parameters got me close but it was still throwing errors for me. In the end what worked was ""-r 8332 -v2 -w128 -na"".For your reference this machine is a Mac Pro running 10.8.2 with two GeForce GT 120s in it but I can only get one of the cards to spool up with Diablo..

### Reply 10:
additional notes. Just tried the same parameters as above on my 10.8 imac with a ATI Radeon HD 6770M in it and it works as well but at about 10x the mhash.

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    ""hardware_name"": ""ATI Radeon HD 6770M"",
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18742,"Date: 2014-02
Topic: Very strange - GPU detected when plugged directly, not detected on good riser
### Original post:
So this R9 280x works and hashes fine plugged directly into the x16 slot, but isn't detected when plugged into a 1x-16x riser which works with all my other cards, including other R9 280x's. It seems like this R9 280x may be faulty in a way that disrupts the information flowing from 16x-1x, which doesn't occur when plugged directly to 16x. Has anyone else run into this?

","[
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    ""hardware_name"": ""1x-16x riser"",
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756,"Date: 2013-07
Topic: [Group Buy] KNC Miner Saturn + hosting(SHARES REMAINING 3/10)
### Original post:
3 shares left.

### Reply 1:
any escrow?you don't have any feedback : <link> I would love to buy some shares.

### Reply 2:
Well, im not sure how escrow is possible.Because eventually i will have to send all amount of bitcoins to KncMiner...i never even knew about this: ""you don't have any feedback, <link> guess, its some kind of new feature...Ill ask a few members, to leave their feedback.

### Reply 3:
SHARES REMAINING 3/10This group buy is for one KNCminer SaturnOffering:- 10 shares of 4.8 BTC each are available.- 2 shares will be owned by me as payment for power/maintenance of the miner + As soon, as this miner be available, ill pick it up personally from Stockholm.- Each share entitles the owner to 1/12 of btc proceeds from a KNC Miner Saturn mining. - As soon, as this miner be available, ill pick it up personally from Stockholm.- payment will be made to the address of the shareholders weekly.To purchase shares:- Send 4.8 BTC per share to address: <truncated> CASE OF NON DELIVERY: I take no responsibility for the possibility that KNC Miner does not deliver the miner.If you require more info etc. Please feel free to ask/post in this thread or please pm me.Small Update:* Refunds will be given in case of non-delivery.* this group buy will be refunded after Nov 1, 2013 if KNC Saturn is not delivered* share holders can elect to wait further* Payout weekly* Guaranteed uptime: until its get unprofitable to mine with it.* My order is 197* Collection date: as soon as its possible to collect those miners from KncMiner* I do not live in sweden, i just travel a lot.-Elijah

### Reply 4:
When is expected delivery

### Reply 5:
September

### Reply 6:
Have the people who purchased these chosen to remain anonymous? I don't see any confirmed orders posted.

","[
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23282,"Date: 2020-06
Topic: Mixed batch hashing board compatibility?
### Original post:
I have a s9 that has a failing hashing board. This s9 is an early 11.5th model, but I have a hashing board from a 13.5th unit to use as a replacement. I plan on learning how to flash a new os like brains to the controller. My question is will the os be able to handle the mixed batch boards?

### Reply 1:
Very likely it will work. I have mixed and matched s9 gear. using brains.But the oldest s9 units have the bigger two piece controller I have not used those two piece controllers with brains. so i am not completely sure.

### Reply 2:
There is really no way to tell unless you try, based on my experience most old S9 boards mix together well, this is specifically for S9/S9j/S9i, the newer models like the S9k is a whole different story, you can't mix different boards even from the same exact batch, there is SN on each hash board, the once I have are either labeled with an SN that starts with 1,2,3, so 1 will only work with 1 and so on, mind you that those were ordered and delivered on the same exact day, but for whatever stupid reason, Bitmain firmware won't allow me to run them on the same control board, so I ended up with a few miners that have a single hash board on them, which I can't mix.Keep in mind that it's very unlikely that mixing boards will cause any damage, so you will lose nothing, you flash whatever firmware you want, and test it if it works - it works, if not - remove the incompatible hash board.

### Reply 3:
Thank you for the replies. I went ahead and flashed braiins OS onto the old control board so I could change each hashboard settings individually in case the old firmware that was loaded (from 2017) couldn't handle mixed boards. The old boards said version 3.x and the newer one 4.x. All seems to be working fine with this setup. It does seem that the new board runs cooler than the two older ones, so I have had to underclock the old ones to keep all around 90degreesC ( poor temps due to this test unit is in a vented sound reduction box and also inside a small outside room :/)

### Reply 4:
The middle board usually runs a lot hotter than the two on the sides because the fan's motor kind of blocks the airflow so you might want to place the new board in the middle to give a better cooling for the other two boards, also I think the 90 degrees temp is not too bad given that they sit in a noise reduction box.Good luck.

","[
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    ""hardware_name"": ""hashing board from a 13.5th unit"",
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    ""hardware_name"": ""two piece controller"",
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    ""hardware_name"": ""newer board"",
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  },
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    ""hardware_name"": ""S9/S9j/S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners with a single hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan's motor"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""noise reduction box"",
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]"
13296,"Date: 2014-11
Topic: I cant do Mining
### Original post:
<link>

### Reply 1:
You're image isn't showing bro. Can't help without a description.

### Reply 2:
Please paste a link to the image instead of embedding it.

### Reply 3:
apparently mining isn't the only thing you cant do!

### Reply 4:
It seems you tried to embed a flash object. Flash is not allowed on this forum, though the button is there in the editor.

### Reply 5:
Can't do internet it seems.Fiver says they're wondering why they can't CPU mine with their Celeron laptop...

### Reply 6:
Posted one dud post 4 days ago with a new account and hasn't been back since. He can try again if he likes with a fresh thread. I'm locking this one since it's pointless./locked

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13196,"Date: 2014-07
Topic: Any one developing for BeagleBone Black other than Mineforeman?
### Original post:
Hi all. Is anyone developing for a mining platform for the BeagleBone Black rev. C other than Mineforman?The more the merrier, no?Geez. I thought this was such a great piece of hardware, yet there's nothing out there for it other than straight up Debian or Armstrong OS's for other stuff.Maybe I missed something. should I just return it, the Beaglebone Black, that is?Thanks in advance.

### Reply 1:
...bump...

### Reply 2:
Wish there was. I asked about getting Black arrow Bitfury boards to work on one a while back:<link> offered a bounty. Got nothing. Right now I have mine soloing using Bfgminer/minepeon.

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16030,"Date: 2019-06
Topic: Miners: What kind of fee information do you see on our transactions?
### Original post:
Hi there miners. I asked myself this question after some personal confusion (now cleared up) on fee estimations on Bitcoin transactions. Using a SegWit capable blockexplorer like Blockchair, I see that my transactions have three different fee calculations: per kB, per kWu and per kVB.A non-SW explorer like Bitcoininfo only shows kWu, so previously thought that I had been spending fees lower than what they actually are, based on kVB.But are all miners seeing SW txs like this?

### Reply 1:
Here's what I use to see current fee rates and breakdowns: <link>

### Reply 2:
That's actually a good question. I understand how including the most txes with the most fees per kVB will mean including the maximum number of txes with the largest fees. But I can't help think about flat fee. Let's assume someone broadcasts a tx with a ton of inputs and a chunky script size. If it only uses 1/3rd the average of network fees/byte, (<link> I generally use this website to see the minimum fee needed for the tx to be confirmed in the next block), but even with very low fees, the flat payout for this big transaction is considerable, is it still going to be seen as any other tx? So by pure satoshis/byte? I always wondered if miners choose to ignore these kind of transactions.

### Reply 3:
All mining is segwit so the segwit anti 1-address calculation is what decides.It's not bytes or whatever that other thing is, it's kVB.btc.com shows an estimate on the front page.

### Reply 4:
It changes hourly or daily.Long term data isn't relevant, it's what's happening in the last few hours that decides your fee requirements to get confirmed quickly (or slowly).

",[]
1085,"Date: 2013-08
Topic: [OPEN] #16 ASICMiner Erupter USB - .41 to .55 btc (CE + RoHS news) 1000+
### Original post:
batch #16 inventory is gone. some orders will be rolled into batch #17 which is due next week.still working through orders. will PM those who will get rolled over into #17

### Reply 1:
which day next week?

### Reply 2:
did the dhl shipment arrive? you mentioned it would come in 13 hours a while back.

### Reply 3:
I think it would be a good idea for anyone sending me a PM with a signed message to verify what you send me... this can speed things up..

### Reply 4:
Canary - and info on this super-price reduction? Arklan is blowing out .175's on this for previous customers - Any shot of getting this deal as well?

### Reply 5:
yay a promo, I was in your first group buy and dropped 2 btc on these things...

### Reply 6:
waiting for friedcat's announcement, per my OP

### Reply 7:
waiting for friedcat's announcement, per my OP

### Reply 8:
i was told by Friedcat that previous buyers could buy them at .1 btc, the .075 is for shipping and handling and the like. this is the same deal btcguild was offering to previous buyers as far as i am aware, except their previous buyers were at 1 btc, not 1.99. i've messaged the cat to clarify exactly what the promo is and told him exactly what i've began offering. it's entirely possible i might have gotten things wrong and will have to return the payments i've gotten or alter the deal somehow.

### Reply 9:
lol when was the last time friedcat announced anything other than 'i confirm user xxxx is the owner of x shares""!

### Reply 10:
If I can get 4 BTC of miners at 0.1 btc that would be the sex...

### Reply 11:
Canary,If stock is out for this GB and you're rolling to the next one, do the price breaks reset each group buy? Thanks for your work.

### Reply 12:
Baby_ghost, 674, 283.08, <truncated>

### Reply 13:
ssinc, 300, 129, <truncated> TX ID #1 <truncated> TX ID #2 <truncated>

### Reply 14:
iluvpcs; 140; 60.2; <truncated>

### Reply 15:
Canary, I know you have nothing to do with the manufacturer's parameters but I simply find the thought that those who helped get this product off the ground at 1.99 BTC would be left out of the promotion sad. It would be nice if those were included as well. Some, like me, bought early with the few coins we had available. Didn't complain when the price came down and bought a few more only to see it drop again. It would be nice to see the reward go first towards the early 1.99 BTC purchasers and go down from there.Canary, if you can please pass along this sentiment and suggestion along if possible it would be appreciated.Thanks.

### Reply 16:
halcy0n3; 25; 13.25; <truncated>

### Reply 17:
Thanks! received, verified and am working on it as we discussed.

### Reply 18:
Going to bed. Ready for tomorrow's INSANITYSent 7 PMs to specific folks to send me a verifiable message. if you didn't get a message saying that, please don't send me PM asking if I sent you such a PM.Bad news: no inventory left from tomorrow's batch.Good news: 2000 miners are heading out tomorrow.Good night.

### Reply 19:
orders will be rolled into #17, after everything is shipped tomorrow, I will know if anything is left over. otherwise, #17 is arriving next week. please don't ask what day... as soon as I know what day, I will post the info.After #17 I too may be out of inventory till friedcat ships again.

### Reply 20:
All looks good to me Sent you 3 pms RE signing (sorry about that, first time signing!).Very smooth so far

### Reply 21:
NOOOOOOO, I thought group was still open since you didn't change subject /o\bt_spectro; 18; 8.64; <truncated> guess group #17 would do.Anybody knows where can i get a couple more Ankler hubs?, amazon is out of inventory

### Reply 22:
See two posts above You'll be in #17Thanks!

### Reply 23:
Those hubs aren't worth the price. D-Link DUB-H7, $25 for 6 usable ports. Sure, it takes more hubs... but your per-port price is $4.26 vs $5.55.<link>

### Reply 24:
try these<link> black and silver whatever cost less

### Reply 25:
agreed, and the dlinks work with raspberry pi's, the ankers don't. Source: I have both.

### Reply 26:
Please change the thread title since no more units available in this batch

### Reply 27:
I can also vouch for the DLink, ran one on a raspberry pi, got 3 total now just waiting on this shipment for it Apologies to Canary - failed to see the second post in thread, so completely did my Signing wrong STILL!4th time lucky.. edit: 6th time lucky, i feel like a right moron now, haha!

### Reply 28:
can you make a live poker game vs people yet?

### Reply 29:
The d-link hub ha the best price/performance because it supports 6 usb miners and a usb fan

### Reply 30:
You might be a bit careful supporting 6 miners and a USB fan. First the hub only ships with a 5V 3A output power supply. 6 USB miners and a fan would be well over 3A. Also, the user manual states: ""It is recommended that the total power consumption of th<rest of thread truncated>
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18111,"Date: 2013-10
Topic: Lower Pool Average Hashrate than Reported by bfgminer
### Original post:
Hello,I have a relatively small mining rig of USB Block Erupters, which according to my mining software (bfgminer), are running very well around the expected hashrate of 336MH/s.However, pool statistics tend to show a hashrate that declines over time. For example, I might start at 336MH/s per Erupter and go down to about 166MH/s per Erupter after a couple of days. This happens both when I use slush's pool, or when I ran p2pool.In case I didn't make it clear enough in the first paragraph, even when the pool reports about 166MH/s per Erupter, bfgminer says that they are running stably at the theoretical hashrate.Is this normal? On the contrary, does this indicate failure of some sort?Thanks!

### Reply 1:
id probably say its a network connection issue either a high ping or your on the other side of the world from the poolspools most of the time work the hashrate off accepted shares if its that much lower then between you and the pool server there could be a problem as they seem to be getting either rejected or classed as stale shares...might be worth running a pingtest and speedtest see if your connection is stable <truncated> i believe slush is somewhere in Europe so select a Europe server either in the UK or Netherlands

### Reply 2:
Do you have a full 0.5 amp for each erupter? Low power well cause a drop in hash over a 24hr period. Would need more info on how you are setup.

### Reply 3:
Miner share finding is as capricious as block finding on the Bitcoin network. It has even more variance if the variable difficulty algorithm is setting your miner to a higher difficulty than 1 given your relatively low hashrate. Pools generally display hashrate over a small period of time, such as the last 10 minutes - the rate is better used just to see that miners are working.You should analyze for yourself if the number of shares submitted over a period of time truly decreases, or if not decreasing, if the pool is properly crediting you for all submitted shares:cgminer --sharelog sharelog.txtThe first entry in a log line is the epoch time in seconds. Inspect the number of shares submitted in a 10000 second period after miner startup vs a 10000 second period when the pool displays a lower rate than expected. Repeat for a different time interval.If hashrate indeed decreases, many things might be going on, from OS entering a low power state, USB driver problems, overheating/bad hashing in the ASIC, etc.

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18196,"Date: 2013-11
Topic: Mining software will not run! Help!
### Original post:
Started BFG miner 3.4.0 and it just hangs there does not recognizes any devices, also keeps saying I either have wrong URL and no workers setup. I check to see if something change because I have been mining with BTC guild for about 3 months. Also I check CG miner and it says I do not have the right credentials, not detecting devices either. I would like to thank anyone in advance for help me with this problem.

### Reply 1:
Post in BTCGuilds thread and/or email Eleuthria to see if your account got banned or IP Address filtered by mistake.

### Reply 2:
Thanks

### Reply 3:
os2sam I checked other pooled that I have mined before and bfg and cg miners are acting the same way.Sham

### Reply 4:
What devices are you using?

### Reply 5:
Is your mining pc dedicated? What's your OS?

### Reply 6:
Im using block eruptors on this one and blades on my laptop, both are doing the same thing. Background there was an cable outage in the area all day, both devices were going in and out. Also when I start bfg miner the indicator light go off like they are going to work then come back on.Sorry for the long reply have to wait 360 seconds to reply back.

### Reply 7:
What Hub?

### Reply 8:
cheap manhattan hub! when I take them out of the hub plugging them straight into the usb port it does the same thing. you think I fried everything???

### Reply 9:
From your cable service going down? I doubt it.

### Reply 10:
Did you answer these questions?

### Reply 11:
sorry window 7, 64 bit OS

### Reply 12:
Does anyone know how do I check if there is an conflict with bfg miner and my system?

### Reply 13:
No problem, thought I may have missed the reply.Let's try this.1. Unplug your Hub(s) from your system.2. Remove your Hub(s) and BE's from Device Manager.3. Shutdown system and restart.4. Unplug all of your BE's from the Hub(s).5. After the system restarts and your logged into your desktop plug in the Hub(s).6. Look in Device Manger and verify the drivers for the hubs got installed OK. If there are any with errors remove them again and rescan for hardware changes.7. Plug in ONE Block Erupter.8. If your using CGMiner now run Zadig and make sure it's using WinUSB and install it if necessary. If your using BFGMiner verify that it's a com port or install the VPC driver to make it show up as a com port.9. Plug in the rest of your erupters and verify they have the correct driver for whichever miner your using.If that all goes well then start up your miner and give it a minuter or two tor recognize the BE's and pools.

### Reply 14:
Sam did everything you told me to do! when I start BFG miner it just hang there than cuts off. I check all my log in code they are correct. It's has to be some type of conflict going on somewhere.

### Reply 15:
Sorry we couldn't hit a solution for you. But that kind exhausts what I can think of at the moment. Did you post on the BFGMiner thread? I'm not real knowledgeable about BFGMiner as I have always used CGMiner.If you have any new developments let us know.Sam

### Reply 16:
Thanks for your help!

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2111,"Date: 2013-11
Topic: [CLOSED] R12: Black Arrow BF Bullet Run $123 = 39% cheaper than cex.io!
### Original post:
We can now watch the hashrate remotely here via the link below. Thank you Thomas!<link> all rounds have now been combined for easier accounting and as a bonus to Round 11 and 12 customers. This doesn't effect Round 9 and 10 Group Buyer payouts in any way, but it does allow Round 11 and 12 paid customers earlier hashrate access!bobsag3: needs his own forum meme as Good Guy Bobsag3.

### Reply 1:
Great job guys

### Reply 2:
I just checked PMs. R12 is definitely SOLD OUT.If R12 is oversold, bobsag3 will be running it in an unofficial R13 that is not for sale (meant only for oversales). R13 will only come online once R9-12 are fully up to speed. He needs the pause to get R9-12 up to speed and to catch his breath.Thank you everyone for making the Black Arrow Fundraising for Rounds 9-12 a huge success!

### Reply 3:
Now its getting exciting!GB team, Thank you for putting this all together. I really cant thank you guys enough for doing these group buys. I know its taxing on you guys to do these and you will have to make some changes in the future. But just think of all the people you might have saved from possibly giving money to some bad people. I think most of us here have had our not so pleasant experiences. Even when I was getting frustrated during the roll out of R10 It was a million times better than the experience I had with a company I would like to pull the wings off of. Keep your head up Bobsag3 your doing great. I'm sure it seems all the pressure is on you but dont forget to eat, sleep and drink. Ok, only drink a little. Best of luck to all of us!And thanks again.M

### Reply 4:
Darnit phil, you literally just gave me an involuntary shiver. They wouldn't refund my 2 Jally pre-orders (or even deign to tell me they weren't refunding after 5 days), and PP was past the 45-60 day window (whatever it is) for refunds, so I went to my CC company for a chargeback.Now PP has limited my wife's ebay PP acct. because they saw it as an unauthorized transaction. Now we have to go thru 4 diff steps or more to get it back to normal. Also, lost $100 profit I had built into that deal (offset with winning a 2BTC bet that BFL wouldn't meet Sept. deadline for July 6 Jallys).All because of some bug, still being a worm.

### Reply 5:
Same BFL said no PP said its past our 45 days and credit card said screw them heres your money back. Took 1 phone call and a quick fax and my account was credited and the funds were taken back by them from paypal / BFL

### Reply 6:
Ha! Hilarious! FWIW: I'm told our facilities are absolutely 100% smoke free.

### Reply 7:
ZERO shares available out of 100At cex.io on 10/30 PM, 1GH = 0.1 BTC. Therefore: 1 BTC or about $200 (at BTC rates of $200) equals 10 GH/s there.In this GB, $123 yields you the *same* hashrate which will be hashing by November 1 at about 39% cheaper than cex.io!We also price our shares in USD so you don't get screwed over by BTC volatility. We are also using Bitfury chips, so it's not like their 39% more expensive 10 GH/s boards are better than one of our 10 GH/s boards. <truncated> reserve shares automatically and for easiest spreadsheet export, please visit the new DZ Miners Cooperative <truncated> update: R10/R11 boards have arrived! R11/R12 boards should arrive tomorrow. 10/30 PM Update: Our Bullet Run Black Arrow boards cleared customs in Kentucky! They arrive in Missouri tomorrow. You can still order here: <link> still actually have 40 shares available in R11, at the moment. This thread is set up to handle overflow from R11 sales. If we run out of stock, please go ahead and still place an order as backorders are allowed and will be fulfilled. Once 100 R12 shares are all sold out, any additional PAID R12 shares will be automatically moved to a Round 13.10/28 Update, boards are<rest of post truncated>

### Reply 8:
11/2 update: R9/10 is up to 1.7TH! We're met our minimum hashrate target!Also, we just passed a co-op milestone that I need to point out...We just passed the 10 TH mark for PAID orders! It only took 2.5 months to community fund and build this mesh network of miners/investors.We also just passed the $113K group fundraising mark, meaning that even including our co-op bonuses of: business insurance, world's lowest hosting fees, access to veteran IT pros in software, hardware, networks, and information security, my marketing and project management skills, our tight knit group of co-op creators (11 so far, including mootinator, unknown.usr, philipma, firsttimeuser, and an oil VP that's not on our forum yet), and of course you:our customers.For which we wouldn't be celebrating this milestone without you. Thank you from the bottom of my heart, on behalf of the DZ MC Co-op leaders and contributors.Cheers and best wishes!

### Reply 9:
Black Arrow deserves huge credit alongside with bobsag3. We can't thank Black Arrow enough for being Good Guy manufacturers about<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""Bitfury chips"",
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  },
  {
    ""hardware_name"": ""Bullet Run Black Arrow boards"",
    ""hardware_is_owned"": false
  }
]"
10499,"Date: 2017-09
Topic: BITMAIN is not responding me, I will lose money and time.
### Original post:
Hi folks, I made order of 2 x L3+ at June for Sept batch. However, they haven't sent invoice with the shipment and DHL is now asking about invoice from me.I just tried to contact them 5 days before, however I never heard from them. Also DHL is forcing me to be quick or they threat me to return the product to seller.What can I do now? Please help me if you experienced same issue before.Thanks for responses.

### Reply 1:
With my previous shipment via DHL, DHL was able to use documents that come with the package so it should not be a problem.

### Reply 2:
Yeah it worked for me before too.However this time they did not send invoice with shipment so DHL is asking paperwork from me.This is really bullsh1t, I am waiting since 3 months...

### Reply 3:
why u not print the order confirmation details sent by bitmain to your email (when u paid for the order); and show it to DHL..it is basically an invoice? is in it?

### Reply 4:
They do not accept something like that.Even it was a CC payment yeah that would work but it's a BTC payment. Btw they have sent me an email that your order is being cleared now, I did not understand how this happened. Maybe they did something from China DHL?Tomorrow things will be more clear. We'll see.

### Reply 5:
is there a booking number possible? I can go to them to ask.

### Reply 6:
Thanks for your help, it's now cleared.They have fixed the issue by contacting DHL.Thanks a lot.

### Reply 7:
Good to hear that. What was the issue though?

","[
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  }
]"
4163,"Date: 2012-09
Topic:  ""Avalon"" ASIC mining machine,  announcement & pre-order start.
### Original post:
Awesome !

### Reply 1:
""Avalon"" -- mining apple maybe, next machine is being called ""sunwukon""

### Reply 2:
Exciting. But any chance this could be made more efficient? Your target of 100 Mhash/Joule is poor compared to plans announced by the competition (bASIC, BFL).

### Reply 3:
So if something fails we are out 70-40% of the money? Also initial batch run is expected from 1/31-3/31 or is that mass production run?

### Reply 4:
i am very anxious! for sure i will pre order one unit.I assume you will not continue Lancelot new bitstream development?

### Reply 5:
sorry about this fuzziness information. will re-declare it later.yes, it's possible for a much higher power efficient. but we should post a conservative value on our first SPEC.FPGA development team will continue their work.

### Reply 6:
Hi,Great to hear that:)Can we preorder with BTC?Best

### Reply 7:
host PC NOT required---so there's a controller embedded? it would be upgradeable, right? I hope the final product will support stratum mining protocol.<link>

### Reply 8:
it's a linux embedded system. which is running cgminer or something like that.

### Reply 9:
Will that be open-source ?Will we be able to log on the unit to mess everything up ?

### Reply 10:
i am counting on this

### Reply 11:
yes,yes

### Reply 12:
You seem to be more prudent and open than your competitor. Wow, impressive.

### Reply 13:
Hi Dr.Zhang,I am glad to hear this news.How could customers inside of China to order it ? Through taobao ? or contact with you via email directly ?

### Reply 14:
Hmm - actually I'm a little surprised - the embedded linux - what will it be?There are some advantages to having the device just a device and not a completely contained computer.. Things like having less hardware to fail and thus less problems. Allowing a much broader choice of network configuration. Not having to regularly update the controller software. Self contained means an all in one failure point?. Self contained means a higher cost due to supplying hardware that many already have (a computer)Though of course there are the advantages of having it self contained also.Mainly to simplify it's use for the technically challenged I wonder if you would consider two versions:The second one as a pure mining device like we have now with most FPGA - a USB device you plug into a computer with multiple internal mining devices to also solve the issue of having a single failure that wipes out everything?Just putting out ideas - since you've said it not final yet

### Reply 15:
IMO it simplifies clusters. And we know ngzhang has been considering this point quite a lot with his FPGA boards.Also, if the system is only one board, it simplifies the communications between the ASIC and the CPUNot to mention the fact that one 60GH board on a computer is one thing, 10x60GH board one one single computer may be a problem to allocate work from the pool at a decent rate. With this architecture, the problem is up to the pool, not the computer.But it's just my opinion.

### Reply 16:
I agree broadly, mining software allocating 60GH/s of work is not going to be an insignificant load on the CPU that's running the show, particularly if the CPU is just an off the shelf ARM Cortex (imagine a single Cortex running 60GH/s of FPGAs). Avalon could potentially be a pretty power efficient device should this be the case.

### Reply 17:
You are kidding right ? 60GH/s -> ~15 nonce ranges/s. If the CPU load is anything but a small blip even on a Raspberry Pi, change your miner software.

### Reply 18:
Well ... I know one person mining with 2 MiniRigs ~51GH/s that uses less than 2% on his CPU.I'll get the info later about the CPU and the downclock it's running also ...

### Reply 19:
the controller itself only cost about 15USD. running open-wrt OS.

### Reply 20:
Very interesting! Your MHs/$ beats the competition, and that's what I care the most about.

### Reply 21:
Well, it appears then that with the right kind of lean hardware and software combination, it's achievable. If that's all possible with <2% rejects/invalids, it would be impressive.

### Reply 22:
I'm interested in buying one

### Reply 23:
I'm glad to see you enter the asic market, ngzhang.I'm sure it will be a quality product. Clever move by using open wrt.Technical questions:How many asic chips per pcb?Unit dimensions?Cgminer has DD WRT support on mipsel chip. Do you foresee any problem with open wrt/chip and cgminer? (This question is better put to the miner dev's, but knowing what type of embedded chip is important)At ~600W per unit, what heat management solution will be used?

### Reply 24:
I would guess it will be computationally split between 6-10 dies... This would enhance yield. I doubt they would be making 4000mm^2 dies as that's pretty much unheard of. And then those smaller dies would be cooled with $10 HSFs.

### Reply 25:
quick answer:1, our p<rest of thread truncated>
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  {
    ""hardware_name"": ""Lancelot new bitstream"",
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  },
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    ""hardware_name"": ""FPGA boards"",
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22813,"Date: 2018-11
Topic: Help and/or advise: bricked my S9 with flashing LPM fw
### Original post:
Hello,I have some S9's, and i tried the LPM firmware.Lateron i was informed that i needed to flash the 650M firmware first, and after this, the LPM firmware.I did this to severalmachines, and it works. Some better than other.Yesterday i was flashing one of the last machines i still had to upgrade, and flash to 650 went good, but the flash to LPM failed. Not that it said it failed, but i cant connect to it anymore...I tried to reset the machine, but it doesnt help.I just cant see it in my network using an ip scanner. No connection. Cant ping it (i have a fairly large network, and advanced ipscanner ""sees"" an active device wich i cant ping. I assume this is the one, but im not sure.Now, i want to re-flash it, using a SD card, but i cant find the tools, software, and instructions for it.Is there anyone that can help me with this, or maybe give some tips or hints?Bitmain has a SD card flash tool for almost every miner they made, exept the S9.... Highly appreciated, thank you.

### Reply 1:
The Chinese video is difficult to see - low quality video - but looks like he is using a T9 SD image file. The Bitmain site does not have that. They have a folder for T9+ SD tools in their ""SD Card with Image Flash Firmware Tools"" - but don't know if that will work for S9 or not. It appears in both videos that they boot up from the SD card once they burn the proper image to the SD card, put it in the controller, and change the jumper position to boot from the SD card. Once there, they just use the GUI interface to flash a firmware of choice much like normal.I noticed in the second video though - that he has a link in the upper part of the YouTube video page (text below the video) where there is a link to download the S9-T9 SD card image file along with the win32diskimager application - here's the link: <link> I think there are newer versions of win32diskmanager that you could download and use - but he does have an S9_T9_sdcard.img file available in the download. That was the piece I was missing in looking for how to do this myself. So download that file, burn it to an SD card with win32diskimager, put it in the controller, move the jumper, connect a network cable, power up the cont<rest of post truncated>

### Reply 2:
Never tried this before with SDcard recovery on S9 but I have some video that I think you can watch how to do an SDcard flashing never find a guide from google but I found this from an old post here on the forum.Check my post below.- <link> <link>

### Reply 3:
That's also my problem before I'm looking for s9_t9_SDcard.img but until now no one gives me the right download link. It seems that the sdcard flashing only works on other ASICminer like t9+. Anyway, Have you heard about unbricking t9 (without plus)? If not, maybe this article will help you to unbrick your s9 miner.Read the full story from here <link>

### Reply 4:
Sorry BitMaxz - I don't have any experience with T9 or T9+ models - I am pretty new to mining - right at 1 year now - I have only dealt with S9, S9i, S9j, L3+, & L3++. Thank you for your links though. I had found the Chinese video, but not the second one you gave - that's where the download link to the S9-T9 image file came to be. I have not tried the process as I do not have a bricked S9 right now. I was considering it for those 3 S9s I just sent back to the seller - but decided to just send them back instead of messing with them further.But the download I listed in my last post in this thread says it's an image for S9 and T9 - do you not trust it since it is not from Bitmain's site? Or will this not work for you?

### Reply 5:
I do not think you need to use the SDcard method. as long as power didn't cut during the flush.you just need to perform a different reset method. which is using the IP report.1- Turn the miner on2- Hold the IP reported for 5 secs3- Power the miner off (while keeping the IP-report button pressed)4- Power on ( while still keeping the ip-report pressed)5- allow up to 30 mins and then look on your router dhcp leases. and it should show there.some times you need to off and on again after step 5.let's know how it goes.

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    ""hardware_name"": ""SD card"",
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    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""network cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3++"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": false
  }
]"
13624,"Date: 2019-09
Topic: Awesome Miners Antminer S9 firmware
### Original post:
Its strange that Awesome Miner did not announce here their custom firmware, given that they have announced Awesome Miner itself...I don't think people should use any S9 firmware with dev fee, no single feature is worth any fees they ask, given most (if not all) features are provided for free either by manufacturer or the Free and Open Source BraiinsOS.Also, Awesome Miner itself isn't free, and its actually quite expensive by itself. Now with this firmware you are supposed to give them even more money?

### Reply 1:
AM firmware is just VNISH firmware with custom skin and decent integration with AM. IF you have a large farm it can come handy to control everything from AM.I do agree that if you use AM the firmware should be at least with a very low dev fee.As for the firmware, if you manually tweak S9 best i could achieve was 13.8 ths/1150W which is not bad regarding th/w.

### Reply 2:
Thank you for the 1st useful info about it.I had a feeling that it might be an existing firmware that has been re-skinned. I'll keep this thread open for the rest of the week but if there is no further input, after the week is over I'll be locking the thread.

### Reply 3:
What settings did you use to achieve this result? Been playing around with diff auto-tune settings, but haven't been able to get my W/Th that low. Thanks!!

### Reply 4:
Well nothing much to say, decent firmware doing what is supposed to do (must admit like it more the BraiinOS) you could keep it open in case something new pops up. For now people might share there settings since orginal AM thread is filed with GPU talk.set chains to 640~650 and voltage per chain 8.4, do the chip auto tune in steps of 2 and 2 min also mark ""Reset chip freq and clear log (set all chip to global freq)"". also set ""HR from ideal"" to 80%.Depending on the quality and condition of your ASICS this can take from 30 min to 6 hours.After you done on mining status window you can check which chain is the closest to ideal, in most cases that chain can be further undervolted to 8.3 (even 8.2) with out crossing the 80% mark from ideal hashrate.Some miners can handle this some don't, found this to be the optimal setting. Some claim that on higher freq you can achieve even better Th/W ratio but its summer (and a very hot one in EU) so didn't try it yet.

### Reply 5:
well, I've istalled the AweMiner firmware n 7 S9, it is based to one of the many DevFee hacks already seen; it is clearly developed in Russia, and the big surprise is that DevFee id MUCH MORE than 2%, it can reach up to 40-50% as shown by ""accepted"" counter in miner stats page and by global severe decline of total hash rate reported by the mining pool. Some workers often hang as shown by SushPool chart, Fee workers are set to mine on SlushPool too. a total SCAM legitimated by Awesome Miner that make me suspect also of their monitor App.Shame AM, tay away!

### Reply 6:
Hi esol. To be honest, not sure where/how you are getting this info. Please provide more details when you are insinuating things like this! I'm not saying this is the best FW by any means, but I have not seen the same results you all out above.I have installed this FW on only a single miner and have been watching the stats pretty closely. And seems to be working as advertised. I open to be convinced otherwise though

### Reply 7:
dude, the evidence as said is that the sum of ""accepted"" blocks of the two DevFee workers reported in miner status page, was in some case nearly half of my main worker URL! Some other miners reported ""just"" 20-25% of DevFee blocks...Also the TX/RX packets counter related to destination IPs of my legit and dev workers (all targeting SlushPool) shown in MikroTik router, was matching the same percentage shown in miner stat page.Then, the active workers graph on SlushPool dashboard shown a zig-zag shape that means my legit worker went down for prolonged periods before resume...I also did a test to ""tarpit"" forward traffic to Dev workers destination addresses (with /ip/filter rules) just to delay traffic reducing efficiency (and thus priority) without killing the sockets, and it partially worked! I mean the number of ""accepted"" blocks has reduced drastically, but after some minutes the two DevFee workers turn to ""death"" and the miner automatically reboots in an endless loop..I'm sorry I didn't take screenshots to prove what I'm reporting, but I've run the test for the whole last night and today my priority was to resume ASAP the Braiins OS firmare! You may easily replicate this conditio<rest of post truncated>

### Reply 8:
I have 50 workers on this fw for testing, everything is in line, payouts, pool graph on btc.com ...Not saying that this fw is a miracle but 20-25% dev fee would raise alarm long time ago in original AM thread. Also i'm pretty sure that AM, HiveOS (same VNISH FW) wouldn't support something that could hurt there clients in anyway...Also accepted column i<rest of thread truncated>
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    ""hardware_name"": ""ASICS"",
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    ""hardware_name"": ""MikroTik router"",
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8711,"Date: 2014-12
Topic: Fans for ANTMiner S5
### Original post:
I need some quiet fans that would have enough airflow for the S5.

### Reply 1:
Likewise... however on topic, reducing the airflow with a quieter fan, you may end up only fanning the flames.If anything perhaps bitmain could suggest a mod for two quieter fans to replace the stock single fan which would surely increase heat dissipation across the entire miner.

### Reply 2:
Do we know how loud it is? Might be quiet like the S1

### Reply 3:
I'll have to check fan headers once I get my unit so I know exactly how the headers behave, but likely the best solution will be to improvise a case over a second fan. Even cling film will help increase directed airflow and increase the use of the current pressure you have.In the future, please direct S5 related questions into the S5 so we can keep the board clean.

","[
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    ""hardware_name"": ""quiet fans"",
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  },
  {
    ""hardware_name"": ""stock single fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ANTMiner S1"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""fan headers"",
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    ""hardware_name"": ""second fan"",
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    ""hardware_name"": ""cling film"",
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5356,"Date: 2013-06
Topic: Cairnsmore1 - Grade-b
### Original post:
We have a small number of Cairnsmore1 grade-b boards available. We are selling these in BTC only at 10BTC for EU customers(inc VAT) and 8BTC for non-EU customers. These prices include shipping and VAT for EU customers. If you want any of these boards contact us on our boardsales email AT enterpoint.co.uk.

### Reply 1:
Hello nice to see some updates on stuff. I would like to know if you have any updates regardif v2 as its almsot been 2 months no responses to emails sent or pms sent to you. Am sure you are aware they are a lot of updates and now USB miners in production and been shipped out. Do you have any updates regarding projects for for v2 or other stuff coming out?

### Reply 2:
There should be some format announcements probably sometime in July or August.

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]"
20401,"Date: 2015-05
Topic: guys do not get to laugh, but this time I can not do right here in mining
### Original post:
guys do not get to laugh, but this time I can not do right here in mining two usb nanofury those mining at 2.2 gh / z with imac Yosemite sorry for my question

### Reply 1:
Which version did you used? What is the error message? Please post the screen shot if you can.

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  },
  {
    ""hardware_name"": ""imac Yosemite"",
    ""hardware_is_owned"": true
  }
]"
15451,"Date: 2015-01
Topic: Making my first bitcoin usb miner hub.
### Original post:
Hi guys so i have always wanted to get into bitcoin mining but never had the money to invest or wanted to put my computer through the strain. I have recently got my hands on a raspberry pi for free and now that im working im thinking of setting up a USB miner hub. Now i am aware that i will probably not make a profit for a long time if ever but its something i want to do a side project. But i was wondering what do you guys think would be a good USB miner to buy first. So fare i have been looking at YELLOWJACKET - 2GH+ USB STICK MINER and the HEXFURY - 11GH+ USB STICK MINER. I was thinking of getting a couple of yellow jackets or just the one hex fury. What do you guys thinking would be the best investment and are there better options or should i just spend the money on buying a miner as it will be costing me around $250 AUD all up if i go for the hex fury.Just so you guys know what im looking in to making i came across this guide and i like the look of how it is setup so ill be making something like this.<link> for the help and information.

### Reply 1:
Antminers are pretty good. I would suggest maybe looking at a U2. Also it is very unlikely you will ever make a profit.

### Reply 2:
Is it possible to buy anything that will make a profit for $250 or would i need to pay alot more.

### Reply 3:
Would it have to be powered by the usb hub, or would it be able to be plugged into the wall for power?

### Reply 4:
No it does not have to be USB it can be plugged into the wall.

### Reply 5:
I doubt it will make enough profit, before the difficulty increases or the halving happen. Best option might be to buy bitcoins of that worth .

### Reply 6:
250 AUD could get you much more hashing power than 2 to 11 GHS, look for a rockminer r box, still its a USB miner but 40 GHS, heck i think even the new 100GHS rockminers are still withing your price range. At least with 100GHS you can have production. If you have the time to wait I would get 1 or 2 rockminers and point them at your eobot account and MINE GHS. That was how I got started. You can also do faucets and things for any coin they have and trade them for GHS in eobot as well. Eobot is a very nice starting pool to use. All equipment will make a profit, in due time, making a profit overnight, is not possible with any machine. Small machines are harder to make a profit on unless you have some back end cloud mining you got your hands on for free backing it up. Larher machines can get a faster ROI when the time is right. I have a 3 month ROI on my big machines. But smaller machines are much harder to do that. 10GHS may get you MAYBE 0.00000500 BTC an hour if you are lucky. and every time the difficulty increases your reward goes down. With small rigs I advise also watch triple mining very closely, if you hop on board there at the right time, you can make a lot of BTC even with s<rest of post truncated>

### Reply 7:
You can get some ant miner S1's or even a S3. At that range it might be better to not be a usb miner.

### Reply 8:
Is mining off of these usb miners profitable at all?Unless you get a sweet, sweet deal, it might be hard to make some real btc due to the ever increasing difficulty.

### Reply 9:
I was also looking at building a small miner like this. Was hoping for 12ghs and to also set it up as a full node to help the network.If your looking for profit this isn't the setup for you.

### Reply 10:
I don't think you quite understand what a full node is but anyway12 gh/s would run you somewhere around $80 in up front cost, your power costs would be slim but still if I was doing that I would buy 2 s1's for the 80$(May be more with shipping included) underclock them (So easy a cave man could do it) and get 280 Gh/s and make 30 cents(With power factored in) a day compared to 4 cents a day. I mean obviously you're not concerned with ROI as much as just getting your feet wet and helping the community but still 30 cents gets you a lot closer to an ROI than 4 centsEdit:And as for you op buy an s3 for 170 bucks, make 2.50(before power costs) a day probably ROI before the halving (I have a bunch of these including the paycoin burst I ROI'd in ~3 months) and thats 441 Gh/s compared to 11 in the hex furyEdit2: All prices in US $

### Reply 11:
I understand what a full node is.Running an s1 at AUD0.22/KWH will likely lose me money. The mining side of the setup was merely for hobby purposes.

### Reply 12:
Oh wow I was unaware of australian electric prices, wow I may have to retract my statement, I only pay < 0.1 AUD/KWH for electricity and all of my s1's make me about 0.19 AUD/day after electric costs. Sorry If I came off rude, was just trying to help and the node comment was just due to wording, It's late here I'm tired and when I read it it just didn't sound right to meHave a good one now EDIT: All prices translated to AUD from USD using google so if they're wrong blame google

### Reply 13:<rest of thread truncated>
","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""YELLOWJACKET - 2GH+ USB STICK MINER"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""HEXFURY - 11GH+ USB STICK MINER"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""U2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""rockminer r box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""100GHS rockminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ant miner S1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ant miner S3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s3"",
    ""hardware_is_owned"": false
  }
]"
20458,"Date: 2015-06
Topic: Antminer Hacked
### Original post:
So I woke up to a bitch of a morning today it seems someone has managed to hack into my Antminer S4's and program a 4th unseen pool and make it the priority pool. I've reset the miners but minutes later they are hacked again, any ideas how to stop this?

### Reply 1:
Is this a miner at your house or data center?To think it happens so quick are you sure you stopped it?

### Reply 2:
It's at a data center using static network settings on public IP's but it is password protected. I've reset the miners and it'll work for awhile and then one by one it seems (I'm guessing the guy is notified of the problem immediately) and the hacked pool is put back up. Not sure at all how to solve this.

### Reply 3:
Had it also, my S4 was not behind a router or firewall and ssh password was not changed. Get the S4 image from the 2nd post on the S4 forum, open the S4, get out the mSD an put the image on it by computer. mSD card back in S4, restart and it is ready for you again. Change settings.Change WebGUI and SSH password and have your Antminer behind a decent router/firewall.

### Reply 4:
Thanks for the help guys, I really hate hackers. They are more cowardly than thieves. I'll get these SD cards re-flashed and change the password and I'll have the data center I'm at put up a firewall for my IP connections.Any other preventative steps y'all know of?I re-started my miners earlier and the hacked pool settings disappeared and then two hours later they were back, I almost thought I beat it out of dumb luck for a second ... not so

### Reply 5:
Well the very second after I had re-flashed the SD card successfully and reconfigured the network settings under a new password, the hacked pool #4 mining at eligius popped back up. I've figured out (simple because it's eligius) the Eligius profile which is hacking me - <link> one of his spikes in hashing power is the hacked units of Antminer S4's that are mine, five of them to be exact.<link>

### Reply 6:
close api also

### Reply 7:
I'm not sure what you mean?

### Reply 8:
Are you using a wifi or internet connection without password?

### Reply 9:
That is a scary situation. Go to the data center and talk to them. They should watch it and close holes.

### Reply 10:
This is a problem with many miners that I have brought up on many occasions and the idiots who make the miners have ignored it.Bitmain sets the cgminer api to --api-allow W:0/0This means ANYONE who has network access to your miner can change anything in the settings.I guess in this case you'll have to login to it and edit the settings manually for --api-allowI'd suggest you use the settings that my modified S2 firmware defaults to: --api-allow W:127.0.0.1,R:0/0Of course you could also read the cgminer README about how the API works <link> and anyone wondering ... I wrote the cgminer API.

### Reply 11:
Few months ago i was checking this exactly, with a simple dork to discover the antminers ( i will not write here ) and access to a network with few of them you can open your mine without worries for electricity costs .Yes you're not the only one who has told this to Bitmain, this is like the critical updates in the source code of bitcoin, happend after a big hack edited: the browser used for the test was shodan.

### Reply 12:
I would be going down to the data centa and looking at their security and also filing claim with them for losses and damages for each time it has happened and the amount of down-time it is causing you. I would even look at using another data location if they do not do anything. Is not good for a place to have their servers compromised. Maybe an inside job who knows end of the day it is not good.

### Reply 13:
Why wold you include the browser that you used? No good will come of putting it out there.I suggest taking it down, pass on findings to Bitmain. Proper reporting is important. Going public is not best plan till it is fixed (assuming you found a security issue)

### Reply 14:
shodan - ninja : now will this help us take down the greedy centralized mining operators? lol ;-)

### Reply 15:
I guess hes not going to take it down. But it is like a google but for security. It scan's the internet for items and documents them where they are searchable. I know this as I am actually a security major in my degree. I got a shiny certificate when I graduated. It is on my wall and is highest piece of paper Ive ever had . I am one of the ethical ones. I have a very clean record (which is needed when looking for jobs in this field in most cases).But anyone reading this should really lock down your routers. As the router is between the internet and your devices. Do not leave router with default password. I personally turned off a lot of items after the forum was hacked, it spurred me to harden my network.

### Reply 16:
are you the owner of bit-x?youre totally wrong this is one of the task of shodan the other 5 task are the good ones.Im not have a degree like y<rest of thread truncated>
","[
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    ""hardware_name"": ""Antminer S4"",
    ""hardware_is_owned"": true
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  {
    ""mSD"": {
      ""hardware_name"": ""mSD card"",
      ""hardware_is_owned"": true
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    ""hardware_name"": ""router/firewall"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S4's"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""router"",
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]"
20724,"Date: 2015-11
Topic: Tips for powering off your miners
### Original post:
Understand what you are doing & why. However I just throw the mains switch. The ASIC's will not be generating any more heat so I suspect no harm will be done.Also on the S5 & I suspect S7 even when you remove the Ethernet the chips keep hashing, so no benefit.Rich

### Reply 1:
Hello and welcome.I thought I would start a little thread to share tips on how users power down their miners, this could be your ASIC, FPGA or GPU.I've personally had a few miners over the years. I got playing with mining on GPU's back in late 2012 and jumped all over buying ASIC's as they became available.Through that time I've learn't to stay in front you should buy, mine and sell ASAP.But when it came to shipping the miners off I was unsure of the best strategy to safely power off the devices so the chip wouldn't burn after loosing power to the fan.Anyway since this occurred to me I've always disconnected the Ethernet to stop work from being pushed to the miner, waited 10 minutes or until I felt the heat had dissipated enough then pulled the power plug.What are others doing to safely power off their miners?

### Reply 2:
I've had experience with the S5 (and hopefully the S7 soon) and found disconnecting the Ethernet worked as with it's <truncated> after disconnecting the antminer they will continue for some time running at full speed until the target pool is no longer recognised as responsive triggering the beeper.

### Reply 3:
OK just checked and you are right, after 4 Minutes or so after loss of Internet an S5 does stop hashing. However I will still just cut the power when I want to shut down, because there is no more heat being generated by the ASIC's when power is cut and Life is too short. Let's see what others have to say?Rich

### Reply 4:
I'm pretty sure your chips won't heat up if you just flip the switch, so yeah just flip the switch. Its sensible to ""properly"" power down a computer to prevent lost of data and some shutdown protocols.But for miners i just flip the switch. I very much doubt there is enough power held in the miner to cause any damage as it dissipate.

### Reply 5:
Maybe I've had some bad luck in the past, I've definitely had a few too many blades randomly die and I even had one miner catch on fire! Also I remember reading a long time ago some one was going to the effort of using ssh on each device and running sudo poweroffThis never worked for me as I typically never had a permanent management computer near to any of the miners when it came to a decom.Does anyone else have tips to share perhaps someone GPU mining?

### Reply 6:
Mining with any other hardware than an ASIC is risky, as they are not designed to run at full capacity 24/7.As for your blades breaking, it might be because of the environment you are running them in. Otherwise, it's just plain bad luck I think.

### Reply 7:
No problem with ASIC, GPU or CPU mining when shutting it down instantly. Though i would not do SHA256d on gpuss. If your things surge and catch fire, its most likely improper ground, surge protection or bad PSU. I never, ever had a problem with this whatsoever, ever.

### Reply 8:
Any conclusion only based in observation is classic junk science. Best evidence is a dead body. Exactly what blade part died. If you do not know that, then nothing was learned from the experience.Nothing in a properly designed computer can catch fire even if fans are not blowing. Heat (temperatures that low) do not cause fire. And do not damage semiconductors. In fact, Intel hardware simple modifies its operation to create less heat and no crash if overheated. Heat causes AMD hardware to software crash - without damage.Using pentiums, hardware was heated to maximum temperatures to learn how hot that CPU could operate - slightly above 300 degrees F. Hardware damage does not start until temperatures exceed 400 degrees. Operating a CPU at higher clock speeds only means software crashes occur at lower temperatures - typically above 100 degrees C. Even that is not hot enough to cause hardware damage or fire.So again, did you learn from damage? Or just speculate? Exactly what part burned - and why? That study may identify a defective manufacturer. Defective hardware would only be a symptom.

### Reply 9:
Typically I've not gone to an effort of finding root cause on the majority of the blades which died so you could call it speculation but given the environment of where the miners operate is controlled, my best guess for reasons of failure educated only by common factors and practical experience are cheap material, low build standards and possible miss use by previous owners if the product is second hand. I'm also aware that because some ASIC chips are daisy chained designed, any failure to one chip will instantly disable the remaining in that row.Unfortunately 'properly designed' is open to interpenetration and in my opinion with the accelerated evolution for purpose built mining har<rest of thread truncated>
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    ""hardware_name"": ""pentiums"",
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    ""hardware_name"": ""ASIC chips"",
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]"
21712,"Date: 2017-10
Topic: Simple Room Temp Alert System on Windows 10
### Original post:
Hi Guys,I am looking for a free software whereby it would send me sms or email if the mining room goes about 30C. I was thinking of buying an USB thermometer and plug it into a PC. I am pretty sure that someone has come across this problem before; hence, I don't want to reinvent the wheel and write my own code.Cheers.

### Reply 1:
Yes, The usb thermometer is a good solution for it. Something like this A temp. sensor with a nodemcu system would be more work but can work <truncated> like this

","[
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    ""hardware_name"": ""USB thermometer"",
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    ""hardware_name"": ""temp. sensor"",
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    ""hardware_name"": ""nodemcu system"",
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]"
19030,"Date: 2014-03
Topic: Pool mining reward methods
### Original post:
I've been relatively new to the mining world and have been eating my fairshare of mining material. At some point I was pretty lost regarding the different reward methods, would it be PPS, PPS proportional, geometric etc.. you name it, and I found this amazing video explaining pretty simply the different types.Wanted to share it with the community, it's 30 min long and well worth the time, at least from my perspective:<link> you enjoy it

### Reply 1:
Yes it is interesting. Indeed I like his slides that he is showing.It is worth seeing.Have a +1!

### Reply 2:
If you want a bit more detail, these have been my bibles for a while:<link>

### Reply 3:
That is veeery nice.Thanks! I will add it to my bookmarks.

",[]
11312,"Date: 2023-06
Topic: GekkoScience Terminus R808 Miner Official Support Thread
### Original post:
** Reserved **

### Reply 1:
Apologies, totally jumping the gun here, super grateful to be in the early receivers group.Connected my new Terminus to my Ubuntu PC controller as soon as I got it. The PC was running with a COMPAC and a 2PAC in the stock USB 2.0 ports, 150MHz and 100MHz respectively. CGMINER found the 808 right away, ran it at 100MHz, and CKPOOL started taking shares. I saw this awesome threesome get up to a 5 min rate of around 110GH/s.I checked my user account 20 mins later and the rate was down to the original 19GH/s. The Terminus was continuously failing and restarting. I took everything apart, pulled the latest VTOHANG fork of CGMINER, and recompiled. I connected just the Terminus, started up CGMINER, using only pool switches, piping it to <truncated> 23:51:42.102] Started cgminer 4.10.0[2018-02-23 23:51:42.102] Loaded configuration file <truncated> 23:51:42.102] Fatal JSON error in configuration file.[2018-02-23 23:51:42.102] Configuration file could not be used.[2018-02-23 23:51:42.401] GSE 0: Terminus BM1384 Bitcoin Miner <truncated> 23:51:42.711] Probing for an alive pool[2018-02-23 23:51:42.982] GSE 0: setting frequency to <truncated> 23:51:43.104] Pool 0 difficulty changed to 4000[2018-<rest of post truncated>

### Reply 2:
I just moved the latest stable terminus changes onto the master branch. Do another pull and rebuild.A better start and restart codeset for the Terminus is there.

### Reply 3:
Code build : ba94edb (follow-up to last post)Terminus updates. Important for R808 owners.windows build:<link> up terminus startup / restart.expose ramp up options:starting frequency / step up frequency / step up <truncated> <arg> Ramp start frequency MHz 25-500 (default: <truncated> <arg> Ramp frequency step MHz 1-100 (default: <truncated> <arg> Ramp step interval range 1-600 (default: <truncated> folder -> checkout (see first post) -> autogen -> makeorpull -> autogen -> make* if you have trouble... report it here.

### Reply 4:
The start frequency is obvious, but how do the step and delay settings work? Where does it stop?Thanks!

### Reply 5:
Checked in a small update to remove some additional test item that leaked over.Pull and build if you are following along. windows build: <link> may be happening frequently the next 2-4 weeks so check back and do a pull while I iron out any reported anomalies.The frequency defaults to 150Mhz. You can change that by requesting a new frequecy <truncated> <arg> Set GekkoScience Terminus BM1384 frequency in MHz, range 6.25-500 (default: 150.0)The previously mentioned options are ramping values.default: start at 100MHz, increment by 25MHz (step) every 15 (delay) seconds.(edit)So with the config save available and working, make sure you edit there if you've saved out a config file. It takes precedence over any command line options. Just a reminder in case you're in a situation where command line options are not applying. Adjust or remove the default config file <truncated> if it exists from a previous config save.

### Reply 6:
Hey VH/Sidehack. Super excited for this release. For the barrel jack connector, i saw on the announcement release, it uses about 4.5 amps at 12V. So based on that, a standard LED strip light power pack should work. something like this? <link> (44GH) 660mV/node 2.64V total; 12V 1.4A for <truncated> (55GH) 660mV/node 2.64V total; 12V 1.7A for <truncated> (66GH) 660mV/node 2.64V total; 12V 2.0A for <truncated> (77GH) 693mV/node 2.77V total; 12V 2.5A for <truncated> (88GH) 715mV/node 2.86V total; 12V 3.1A for <truncated> (99GH) 755mV/node 3.02V total; 12V 3.8A for <truncated> (110GH) 770mV/node 3.08V total; 12V 4.4A for <truncated> (121GH) 770mV/node 3.08V total; 12V 4.9A for 58.8W/0.49J/GH

### Reply 7:
that is junk I will get you a better linkthis will do 3 units<link> efficient use with these as they are 22 ga not 24 or 26 just cut off the end that does not fit.<link> yet buy these<link> cut to length 3 rigs per psu 88% efficient

### Reply 8:
You can also use a power supply from a computer like I did:I had a spare one laying around.

### Reply 9:
that works well . just as long as he does not use those bricks he linked

### Reply 10:
Guess I'll be the first one with a problem I had 2 of them go zombie and didn't look like they were coming back.I power cycled one/ unplugged the usb after ejecting it, plugged it back on to Nothing.Not sure what I am doing wrong....Help pls

### Reply 11:
Start with the latest code build available in the opening post. Looks like you are a couple of builds behind.

### Reply 12:
will give that a try and reboot my computer just in case, thx

### Reply 13:
Not sure what this is....Duplicate Nonce?[2018-02-24 19:59:20.939] GSE 0: Duplicate Nonce : 03c760ca @ 04 [03 c7 60 ca 84 00 00][2018-02-24 19:59:22.952] GSE 0: Duplicate Nonce : 05a0d226 @ 1b [05 a0 d2 26 9b 00 00][2018-02-24 19:59:26.234] GSE 0: Duplicate Non<rest of thread truncated>
","[
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    ""hardware_name"": ""Ubuntu PC controller"",
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468,"Date: 2013-06
Topic: [Group Buy] Terrahash DX Large 95% Payout 1 BTC per share
### Original post:
Can you please post a screen shot of your order. Also are you willing to do escrow?

### Reply 1:
PS: Here's my reply to oaxaca. Hey,Yes, I can do so. I normally include ID verification, where I hold the operator's ID in escrow too as an amount of trust is needed for the operator. Check my other group buys out. Please note that I require a minimum of 10% (or 10 shares in your case) to be pledged by others before issuing the escrow <truncated>

### Reply 2:
Sorry Oaxaca, Terrahash just explained their ordering system more in the terrahash thread and there is definitely no 6-days to pay. Even if you have an initiated bank transfer you only have 2 days or so before you are put in the back of the line.

","[
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]"
18276,"Date: 2013-11
Topic: Need help with Block Erupter Blade V2
### Original post:
After finally getting my Block Erupter Blade up and running, it has started to restart at almost exactly 10 minutes, every 10 minutes. Additionally, there are 3 x's present in the ""Chip"" line on the configuration page. These are shown in the screenshot below<link> have been told that this means there is an issue in one of the power lanes, but that I cannot manually fix this issue due to the absence of power modifiers for each individual lane. I am hoping someone with more knowledge of the Blade can possibly help me out in finding a solution to this issue.I thank anyone in advance who can possibly help me out, and I will provide any additional information if needed. I am willing to give someone a fair amount of bitcoins or compensation if they assist me in finding a solution to the issue.

### Reply 1:
id suggest trying everything external first try a different PSU make sure the wires from the PSU to the blade are wired correctly and the power wires are doubled up like in the guides stick a fan on the heatsink see if it helps

### Reply 2:
First off, thanks for the reply! After reading your post I made sure cooling wasn't the issue by putting multiple fans both on the chip and heatsink. I have also completely rewired the blade using the molex splitter hack, and I am still running into the same issue. I'm almost certain that the PSU is not the issue - <link> - and I don't have the ability to try it with any other PSU right now. I'm just really eager to get this fixed. Thanks for the suggestions!

### Reply 3:
Replying to note that I have tried the Blade with two different PSUs and have realized that they are not the issue.Giving .04 BTC to anyone who helps me find the solution.

### Reply 4:
I know what the problem is, if you look at the bank of ASIC chips on the blade you will find that 3 are not wielded fully to the PCB. You should view it under a magnifying glass and make sure All soldering joints are complete. You may or may not be able to see the ones that are not wielded fully. You need to repair this for all the chips to work. Jesse11

### Reply 5:
It's possible that one of the bank VRMs is not outputting proper voltage - something is out of spec. That would be more likely if all for chips in that section were X'd instead of just three. If you have a voltmeter, check the output voltage for the fourth VRM from the end with the ethernet jack. Measure between the probe points indicated and some ground reference - the ground on your power connector is the easiest to find. It should read out awful darn close to 1.05 - if not, there's a problem with the regulator for that bank.If that's within spec, then it's more likely a problem of power not getting to those chips, or those chips not signalling right - so, probably what jesse11 said and they're not soldered down properly. If you have a hot air station accessible, you might try giving them a bit of a reflow and see if that gets the digitals flowing properly.

","[
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    ""hardware_name"": ""PSU"",
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1967,"Date: 2013-10
Topic: [OPEN] Group Buy #18 Blade Miners 1.90 BTC or less! Shipping to USA addresses
### Original post:
Price adjusted lower again

### Reply 1:
hi can anyone be so kind to show me some links for a cheap psu power supply that will work with the bladethank you

","[
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23476,"Date: 2021-03
Topic: S17+ Low hashrate / No hashrate
### Original post:
Hello all. I recieved my used antminer S17+ yesterday, and after fiddling around with settings, trying all sorts of resets and reboots, and could not get it to hash more than around 40 TH/S average. It would sometimes spike up to 70-75, then drop down again after a little bit. It doesnt show anything wrong with the hashboards or asics at all, it kinda seems firmware-limited, in a way..As a last resort, i downloaded the newest firmware from the bitmain site, and tried flashing it with it, via the web interface. And now it won't hash at all. I've tried both the normal SHA256 and the asicboost stratum, but to no luck.. Does anybody here have a clue?Including the kernel log:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal z<rest of post truncated>

### Reply 1:
I don't see anything wrong in the log. Does the log show any more messages after the hashrate drops?When the hashrate drops, what does the miner status page look like? Have you tried different pools? You could also try flashing with an SD card to make sure you are getting a clean install.

### Reply 2:
Lots of people have issues with Nicehash, try a pool like kano, viabtc, f2pool, etc... first before trying anything else.also, with nicehash you should add #xnsub to the end of the pool URL if you haven't already.

### Reply 3:
Well, it works now so i guess its okay... Ill let it run for a day or two, and test another one and check my rewards in comparison.Thank you, didnt know about the xnsub-thingie.

### Reply 4:
I think the reason why you can't mine recently or drop in hashrate is due to their system maintenance a day ago that's why you experienced some drop in hashrate.Next time always check their status page here <link> you just follow the first post of wndsnb by changing the pool maybe you solve this early.

### Reply 5:
It works now but it will eventually fail as long as it's mining on Nicehash you should expect to face all kind of issues ahead, including but not limited to your funds being ""hacked"", and you don't really make any extra mining on Nicehash, in fact, the last 7 days Nicehash made 3% less profit in BTC against mining directly to a PPS pool, the on-going difficulty changing and all the mess they create will go to as far as bricking your gear and many of us here have personal experience with such issues.The only time I would consider nicehash is if there is a massive temporary pump on the rates there, and that will be for a quick run and I'd leave, but mining 24/7 on Nicehash is a terrible idea regardless of how you look it at.

### Reply 6:
Unfortunately, i did not save the log when the rate was just dropping. Now it just wont hash at all, even after resets and restarts. Guess i have to try with and sd card yeah.I have not tried changing pools (i use nicehash), only switched between SHA256 and SHA256asicboost.The status page now, says diff 50k, getworks 37, then everything is 0 until discarded, which says 448. I will upload some photos when i get back to my pc.The machine was tested before it was shipped here, and everything looked good.Update: after numerous restarts and resets, my machine started hashing properly. Still not sure what the problem was but atleast it works now.

### Reply 7:
Okay, thanks for all support guys. Im considering switching to slushpool, as i will try the braains os on my machine. On the topic of pools, anything you recommend?

","[
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15614,"Date: 2015-09
Topic: PreOrder the new 100Ph/s miner ""MooN"" for only 2999,- USD and get one free!
### Original post:
Wow, looks like real german quality engineering!Thanks for taking preorders for this get rich quick machine! You clearly care for the community and home miners:)

### Reply 1:
100PH/s? I just jizzed myself.What an insane number. We all know that mining hardware development is staying at a rocketing vertical level.

### Reply 2:
LiteBorpfInc will reveal more infos in the coming weeks. Stay tuned, it is a game changer!

### Reply 3:
Ask your doctor or pharmacist about the side effects of LiteBorpfInc Miners - the above mentioned is a common one

### Reply 4:
Hahahahahaha! This made my morning .The attention to detail in this miner is fantastic, and the easy access flap to the internals is ingenious!

### Reply 5:
Just to put the thing into perspective - there is a company called Yesminers actively selling pre-orders for their 20TH/s - 1500W Miner Vaporware... It's a big laugh in the German part of the forum ATM

### Reply 6:
I like the cardboard box... much easier to ignite... gives the smoke alarms time to go off before the building goes up completely.. genius....Does the fan come in blue...

### Reply 7:
@OP u spent all the time of setting up this toy to write this post !!!

### Reply 8:
nice and you don't even have to unbox it

### Reply 9:
That is a special feature for our customers. You can also easily upgrade the miner with our next hardware generation.

### Reply 10:
i preorder send me unit first, and then i will pay youi can show you proof of my existancedo you want my address?

### Reply 11:
Yes i need that.

### Reply 12:
This would be a game changer if this machine lives up to the claimed specs. I will keep a close look on it...

### Reply 13:
You should emphasise the fact that the case is biodegradable, that's a definate selling point in these eco friendly times

### Reply 14:
Add ""JOKE"" to the subject please so that people stop reporting this thread

### Reply 15:
Any website there to Pre-Order this Miner?

### Reply 16:
I wonder how many people would actually believe this is true..

### Reply 17:
Not yet. Only limited pre-order. First batch contains 21 MooN Miners.

### Reply 18:
The ones reporting this thread to moderators are the ones being serious. Doesn't bother me...

### Reply 19:
Sounds good. Please post more info. Web site, etc.

### Reply 20:
Soonish!

### Reply 21:
and I need to ask again before ordering, will the display rotate depending on the monting direction?

### Reply 22:
No. Display rotation indicates rising bitcoin price

### Reply 23:
Nice info

### Reply 24:
Does it bother anyone else even slightly that the display on the cardboard joke unit is the same exact as the display on the 'Yesminers' site?Does anyone else understand that clicks sent to this website will eventually translate to someone losing money?What are the chances the two are related?Hmmmm...

### Reply 25:
Does it involve nuclear fusion?

### Reply 26:
Crazy, i want to build a 100PH miner out of outdated DDR ram and a cellphone + ductape/cardboard combo too!Lol, you and your Nuclear Fusion.

### Reply 27:
Quantum technology.But you are free to run it on nuclear fusion generated <truncated> it's power draw is negligible.

### Reply 28:
The chances are high - in fact I suspect that the ""Yesminer M20"" is nothing but a re-labeled ""MooN""

### Reply 29:
Don't insult the MooN. The Yesminer is nothing but a pretty 3D rendered image. The MooN is real! And we all know that ducttape is what hold the universe together. So it definitively make sense for it to be used as construction material for something strong.After all i use it on many of my miners to make them better!

### Reply 30:
Yes of course! Thanks for your question.

### Reply 31:
Yes. It is state of the art <truncated> you. I will sent a preview sample for free to your address soonish! This is the real stuff!

### Reply 32:
Yes please do. Consider it a Vouch copy or something! I'll do a unboxing and a review!

### Reply 33:
I'd like to pre-order the full first batch... But only if the screen rotates...

### Reply 34:
After extensive testing of the BorpfMiner, I finally succeeded in constructing the ultimate cooling device - you can rent it for 1 BTC per miner:As you see, the capacity is five BorpfMiners per rack and 24 racks per cooling unit. Of course I take pre-orders!

### Reply 35:
Money arrived! First batch sold! We will sent the first batch on the 21.12 ! <truncated> You were the first buyer that recieved a test-unit but the next batch will be 1000 times faster!

### Reply 36:
I do like the random pile of old RAM in the corner of the box, I think I could use this in an old PC I have in the attic.

### Reply 37:
Our MooN Miner is using this as voltage storage which improves the efficiency by 1021%!

### Reply 38:
German mining hardware firm LiteBorpfInc is deploying a new bitcoin ASIC it says will be a ""game changer"" for the industry!First ann<rest of thread truncated>
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15004,"Date: 2014-03
Topic: Block solving 1-3 hours at times. Not enough miners?!?
### Original post:
I was under the belief and I'm probably wrong, but I thought BTC blocks were supposed to be solved every 10 minutes??I've noticed that depositing or withdrawing BTC from any exchange, small or large can take upwards to an hour at times. Is this because there's not enough mining hardware online to handle the workload or the difficulty is set too high??Just curious....

### Reply 1:
Bad Luck for block solving has nothing to do with transactions.

### Reply 2:
so if there were no miners, transactions would still happen? I thought a block consisted of a number of transactions that had been verified? At least that's what I got off watching several videos about it on YouTube..

### Reply 3:
No, you would need at least one miner for transactions to be included into a block. And the ""10 minutes"" is just the overall average. (Sometimes blocks take only 20 seconds and another time there is 2h without a block. It is completely random and you can not predict when the next block will appear.)

### Reply 4:
<truncated> GH/sBlock Generation Time(?):1 block: 9.3 minutes3 blocks: 27.9 minutes6 blocks: 55.9 minutesCurrent average. Blocks do not take hours to solve anymore....there's too much power being thrown.

### Reply 5:
I may be mistaken but it sounds as if your problem is transaction confirmation time, not block solve time.As already mentioned blocks are solved about every 10 minutes on average. This has always been the case irrespective of the number of miners. The mining difficulty is automatically changed each fortnight to ensure 10 minutes stays around the average solve time. Transaction confirmation time can be a very different matter. It is up to a block miner to decide whether to include your transaction in the block they are mining. If you don't include a mining fee, and the Bitcoins in the transaction have only recently been moved. it can take a while for the transaction to be confirmed in a block. Several hours are possible. The miners will normally include transaction which are 'high priority' or which include fees. For non fee transactions it just depends on the miner - in the long term it is in the miners interest to encourage fee paying.If you need the transaction to go through quickly ensure you have included a mining fee. I think the default mining fee is currently 0.0001 BTC.See <link> if you want the details.

### Reply 6:
There is a ~0.15 % chance that a block will take longer than one hour.Proof: Taking the total hash rate you provided above and the probability to find a block with just one hash, gives a probability of approximately 0.18 % to find a block in one second.<link> the probability to find a block in the n-th second is:<link> Given the above formula, one can expect a block every 551 seconds:)<link> said probability that a block will take longer than one hour (3600 seconds) is:<link>

### Reply 7:
One small item of note. The original ""expectation"" was that it would take 14 days (aka a fortnight) before 2016 blocks would be solved, and then difficulty would adjust. The difficulty adjust every 2016 blocks. If that is less than 14 days, difficulty goes up. This has been the case for months. If it were to take longer than 14 days to solve 2016 blocks, then difficulty would decrease. Difficulty decreases are RARE!

### Reply 8:
Maybe your transaction fees are not enough. Also, i observed that if too many blocks are solved in a small timeframe, the next blocks will be slower. (Correct me if im wrong)

### Reply 9:
maybe if the difficulty wasn't 4 billion

### Reply 10:
The time it takes to solve a block has to do with luck, so it can go from few sec to hours.

",[]
18469,"Date: 2014-01
Topic: Noob struggling to get bitfury miner working, please help!
### Original post:
I've been trying to get this working for over a week now, and I'm ready to tear my friggin hair out!! Consider me a linux retard, I know enough to be dangerous but not enough to know what the hell I'm actually doing... I have a Redfury USB miner, I've built BFGminer from source, and I seem to have everything running correctly except for one problem... BFGminer refuses to acknowledge that I have the hardware plugged in as it won't autodetect. I haven't figured out how to point it manually to the hardware address (mine is on /dev/ttyACM0). I'm also trying to put run this on my own p2pool instance, and as far as I can tell I have that set up properly. I'm completely exasperated and I just want this thing to work, is that too much to ask!?!? If someone can get me up and running I'd be more than happy to point the miner to your address for 24 hours, thanks ahead of time!

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5200,"Date: 2013-06
Topic: Cool new BLF scam grab you cash and line up suckers
### Original post:
They just don't give up now they are trying to sell parts from a no-existent product<link>

### Reply 1:
You must have been on vacation last few days

### Reply 2:
Yeah, this news is already being discussed on this thread:<link>

",[]
4119,"Date: 2012-06
Topic: Lead time on current products?
### Original post:
I just ordered a BFL Single (the FPGA one, not ASIC). What kind of time am I looking at before getting it?

### Reply 1:
BFL Hasn't given any information about the lead times for the FPGA, there are no threads which go over the lead time. If you search, you won't be able to find any information either. We as a community are here to help. We have several investigators currently dispatched to BFL headquarters, they will be arriving within the hour, though high winds may delay the drop from the aircraft.

### Reply 2:
***UPDATE***4-6 weeks

### Reply 3:
You can have my Single right now for $1000 if you are in UK.

### Reply 4:
You can check this thread to get some idea of how long it's taking.<link>

### Reply 5:
I'm not sure why you would order an FPGA single now. If you have the money, I would also order an ASIC single using the exchange program. You can mine on the FPGA till the ASIC is ready to ship. If you don't have the money, I would see about cancelling the FPGA order and getting some of the Jalapenos. You can get four of the them (14 Gh/s) for the price of the single (less than 900 Mh/s). Sure, you will have to wait longer, but the investment makes more sense IMO.

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21673,"Date: 2017-10
Topic: Below Freezing Point Temperature For Miners..What Would Happen?
### Original post:
What would happen if the miners were in an environment below freezing point i.e. 32 degree Fahrenheit?

### Reply 1:
Should be just fine, what could be a problem is if the temperature (and humidity) suddenly rise and cause condensation.

### Reply 2:
Another possible problem I could think of is that water in the air passing thru the heatsinks could freeze at some point, and continue freezing until no more air can pass through the miner. I think it is possible even if the air is moving fast

### Reply 3:
That would only be a problem if the miner isn't mining but the fans are still running. The heatsinks get hot enough to almost boil water during regular operation.

### Reply 4:
Then why do some manufacturers put minimum working temperatures like -5 or -10? From your perspective, the miners could run even on -40. I do not think the heatsinks will get that hot under such extreme temperatures even if the mining process is on.And possibly under such temperatures, only the board itself will retain heat, and heatsinks will be cold

### Reply 5:
well at -100f you may be correct.the minimum number is more due for startup then an other issue.if I have a piece of gear in a 20f room for a day and it is fully 20f starting it is hard on the gear.I suspect expansion and contracting would be far more extreme in a 20 f room when ever gear is turned off or crashes it will contract quite a bit more then it would in a 65f room.I ran gear in the winter exposed to 5f temps. let me find a photo. if the gear crashed I had to shut the door to let the gear get warm enough to start back updoor open in winter <link> closed<link>

### Reply 6:
Temps are not a problem if the machines are running. The problem is if a machine stops hashing for any reason and the boards end up ice cold. The processing chips will RAPIDLY heat up while the rest of the board might take a bit. This temperature inequality will cause damage.

### Reply 7:
The change in temp is not great I am under the impression of.. Like -30 air hitting 40 degree metal won't go well.

### Reply 8:
Ask me again in a few weeks...

### Reply 9:
Are you in Canada?

### Reply 10:
Yes Ottawa

### Reply 11:
Fanatic, as long as we first let the miner get back up to room temp before starting, do you think things will be fine? I guess I mean, would the thermal cycling alone (even if not started up) possibly cause thermal stresses and issues with the solder or other circuitry?I also have an application that the miner will get very cold when they are shut down. I do plan on waiting until they are at least room temp before restarting them however.

### Reply 12:
You should be fine if you can warm the units up before starting. Just remember that it might take a while to passively heat the units up if they were offline for an extended period of time. The heatsinks will retain cold just like they do heat.

### Reply 13:
Great news. Yes I am putting 30 Antminers in a shipping container, sometimes it will have complete loss of power, so I have been very worried about possible thermal cycling killing the units.Cheers

### Reply 14:
I have heard that the hash rate of the miner goes down in a cold environment. So I guess one of us will need to experience this practically to figure this out.

### Reply 15:
30 Antminers? Nice Won't 30 units heat that container?What is average temperature inside and outside container?p.s.Loss of power sucks... how do you solve it with that container?

### Reply 16:
Yes they will heat the container when running, that's not the problem. When it shuts down the temp can be as cold as -40 deg C (live in Canada). I am just crossing my fingers that the S9's circuitry can survive that temp...

### Reply 17:
What about summer ? winter mining is trivial , its spring and summer than separates the men from the boys

### Reply 18:
If they stay in cold inactive they will not switch on later until you heat them. But if they are active and working I believe nothing can go wrong. So it is important to have electricity 24/7.I am very interested how loud my asics will work in freezing cold. I will check this during winter.

### Reply 19:
I am in story as well, testing this winter in Winnipeg

### Reply 20:
lemmy reaqctivate my cryolab1

### Reply 21:
I'm only a couple hours away, I'm planning on moving my miners into the basement and running them to my furnace intake. I know they were loving the cold nights the past few weeks. I never did start them in freezing temperatures though.

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12557,"Date: 2013-08
Topic: Gui miner for Bitcoin and Litecoin
### Original post:
Why? What's wrong with the other GUI miners? You know, the ones with features and stuff?

### Reply 1:
Features:-Gui interface mining-auto config gpu-multi gpu supported-cgminer kenerSource code<link>

### Reply 2:
useful for newbie

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231,"Date: 2013-06
Topic: BE/NL (group-)buy Avalon chips + K1/K16 from Bulgaria (marto74)
### Original post:
Here you can find all the info for our group buy.Everything will be delivered within probably 3 months to the Netherlands or Belgium.<link> (dutch)

",[]
7971,"Date: 2014-06
Topic: Black Arrow X-1 Instructional Thread
### Original post:
General Set up instructions:Attach the Ethernet port to a network that is handing out DHCP addresses. Attach the power cord (that might or might not be included to 120, 208, or 240 volt power.The Management server should pick up a DHCP address.Navigate to <link> should be presented with the Miner GUI login screen. Login with user / blackarrowNavigate to the IP settings screen and configure a static IP that is available on your network.Navigate to the pool setting screen and input your pool <truncated> that the settings have been saved and pull the power cord to reset the device.Navigate to <link> and login with user / blackarrow. Select the miner in the top left of the GUI. This will display the mining statistics for the integrated miner. You should have an obvious green flashing LED inside of the unit if the miner connects and is hashing.

### Reply 1:
All early production units lack a LCD. Once these are delivered a description of the installation process will be added here.

### Reply 2:
As items are discussed in this thread I will add them to the FAQ, etc and then delete the post items to keep the thread short.

### Reply 3:
I am going to pull in all the pertinent information around X-1's into this thread to assist with trouble shooting these devices.There are some oddities specific to this equipment that haven't been seen before as well as some software bugs that will trip people up.Post 1 - Physical description of the box.Front:Rear: Typical Running <truncated> GUI example:Miner GUI example:

### Reply 4:
A description of all the UI options will be posted here. Along with any new developments for the product.Management GUI Master Page:Miner GUI Master Page:

### Reply 5:
X-1 FAQ:Q: What kind of power cord do I need?A: A standard ""mickey mouse"" cord. The technical name is IEC C5.Q: How loud is the X-1?A: The device makes no sound itself. There is very slight wind rustle this isn't audible 4 or 5 feet from the unit.Q: How much power does the X-1 consume?A:1200Mhz - 120-130gh - ~115-120w 1100Mhz - 112 - 118GH - ~107W 1000Mhz - 98 - 109GH - ~98WQ: Does the X-1 come with an Ethernet cable?A: No

### Reply 6:
More FAQ

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17951,"Date: 2013-08
Topic: Driver software for Singles
### Original post:
The singles device drivers updated fine from my laptop, but I purchased a net book just to run these and it doesn't seem to want to auto download device drivers. I then try to go to the device manager to manually have them search and download and it will just pause or freeze on searching for drivers.. Are there any downloads out there that I can manually update the drivers or a solution to this would be helpful..

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3001,"Date: 2014-03
Topic: [In Stock - Free Shipping] AntMiner U2 USB STICKS - US/Canada .042 unit
### Original post:
Well this is surprising, I ordered about a week ago, asked two times for a shipping update this past week with nothing back. MYUPS just emailed me tracking info (box was shipped out on the 28th) and it's already in Kentucky for Delivery Monday. So 500 open for orders for anyone who wants them.I assume this will be the U2's as I was told they are out of U1's (but then I got a box of U1's in last Monday).

### Reply 1:
other then the big ass heat sink whats the difference?

### Reply 2:
More shiny BLING!AFAIK nothingInteresting thing will be if there is a new case and the size of the case, as someone mentioned earlier in the thread, they probably had to get different part supplier and this was what was available to do the run for the units.

### Reply 3:
hehe I am going to start removing the BTC Bling and putting on the old asicminer sinks, and selling the old asicminers with Big Shiny Sinks on bay

### Reply 4:
The price the same, boss man?

### Reply 5:
.042 Is <link> your site? Just checked it out - cool stuff/links

### Reply 6:
Where are the specs on this animal?

### Reply 7:
same chips...AntMiner U2 Spec:Default hash rate: 1.6 GH/s, over clock by commandPower consumption: 2 W on USB 5V @ 1.6GPower supply: 5 V DC inputSize: 60 mm x 25 mm x 27 mm

### Reply 8:
Face-lift?

### Reply 9:
Hello Iluvpcs,can you let me know of the pay pal cash invoice price?thanks Brian

### Reply 10:
The main thing is that they will be a bit easier to overclock due to the better heatsinks (more surface-area)

### Reply 11:
I'd like to secure 46 U2's, I'm waiting for my BTC to confirm to send over, who figured it would take 40 minutes to get 0 confirmations (just my luck).When I get home from work (Monday morning) I'll wire over the funds.Thanks!

### Reply 12:
I have yet to hear back on the ability to run stable past the 2.25 mark which U1 manages fine without going up in smoke.

### Reply 13:
I think the 27mm depth is a typo. The images don't show that the U2's depth is more than it's width (and that would be ridiculous since two USB ports would now most likely be skipped instead of one which is undesirable enough). A Blue Fury is about 17mm thick; so I assume a U2 would be about the same. If it is equipped with the same resistors as the U1, then no amount of heat sink can make it go beyond what is expected of a U1 (I think). Having said that, I can't figure out why they made the decision to make it more bulky which necessitates skipping a precious USB port. The U1 has found its sweet spot at 2.06 GH/s without any temp issues. Why fix it when it ain't broke? I think they would have better profit margin by just making the U1's price more attractive instead of incurring additional manufacturing expenses for a mere facelift that seems hardly for the better.If this current shipment is a U1, I'll most likely order more depending on price drop (I've got a couple of 49-port hubs with 38A each that I was planning on filling with U1s). Otherwise, if they are indeed U2s, I'll probably get one as souvenir; then I think I'm done unless Bitmain makes the U2's price very irresistable<rest of post truncated>

### Reply 14:
Sent a pm will order 20-30 depends on heat sink and if they oc beyond 2.2. they would need a different resistor to do that.

### Reply 15:
My vote would have been for U""2"" to have two BM1380's. Yes hardware overclock information is in the pdf on git hub but thus far seems theoretical. I was hoping to see something stable from experimentation.

### Reply 16:
I would like to order 20. Confirm?

### Reply 17:
Yes sir, that's my work--thank you!I'm waiting on coins, but I'll be placing an order hopefully next week.

### Reply 18:
they oc to 2.0 with ease. some where on this site is a post of a resister swap and oc'd to 2.6 can't find it.

### Reply 19:
so this size probably wont fit the 49 port hubs nicely (if I dont want to skip alternate port)? any idea?

### Reply 20:
If they are, in fact, the same board, you should be able to peel off the stock heat sink and perhaps replace it with a smaller heat sink designed for an IC or memory chip. That said, USB hubs aren't that expensive--I'm not sure the minimal cost of expanding your USB fleet warrants the risk of replacing heat sinks with something smaller.Just a thought!

### Reply 21:
All that is required is USB 2.0. I use 10 port ORICO P10-U2, double space and daisy chain. They are $20 a piece where I am and that's not likely best price.

### Reply 22:
You'll have to skip every other port as I have done with the Furies on the ASICMiner 49-porter. There's no way around it.

### Reply 23:
Did you save your old .336 asicminers ? if so swap the sinks, and sell the old .336 models on Bay with a big FOR OVERClockers HeatSink in title.They will do well. Pretty sure the old stock of sinks ran out is the issue, as a USB port is a far bigger loss in efficiency than a few MHZ <rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AntMiner U1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asicminer sinks"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""49-port hubs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Blue Fury"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1380"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ORICO P10-U2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASICMiner 49-porter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": "".336 asicminers"",
    ""hardware_is_owned"": true
  }
]"
22944,"Date: 2019-05
Topic: Antminer T9 Plus Hardware Version is blank
### Original post:
my Antminer T9+ have not hash and Hardware Version and BMminer Version is blank.i did this work several times also:1-reload firmware2017 and 2018 downloaded from bitmain2-software reboot3-hardware reset4-reset factory (power off and keep ipreporter and power on)5-check internet connection6-change ethernet cablealso this is my kernel log:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages<rest of post truncated>

### Reply 1:
I second the notion of a possible power issue. What PSU are you using, and at what input voltage?

### Reply 2:
Can you try to run the miner with only one hashboard or check the voltage of power supply if it supplies enough power to your miner?If you have extra t9 plus miner can you try to test the control board to the other working miner to know if the control board is damaged or not?Also, Follow this method Test hash board one by one then update here.

### Reply 3:
Looks like something is off with your boards. Bo what BitMaxz said and follow the Bitmain instructions on testing the boards 1 at a time. IIRC you should be seeing this:Code:Chain[1] read_freq_badcores : 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff chain[1]: [22:5] [24:24] [57:35] [255:255] [255:255] [255:255] [255:255] [255:255]Instead of what you have:Code:Chain[1] read_freq_badcores : 0x7d 0x33 0x33 0x33 0x11 0x33 0x33 0x3e 0x57 0x00 0xff 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x20 0x23 0x01 0x22 0x01 0x02 0x00 0x21 0x11 0x3e 0x57 0x00 0xff 0x3e<rest of post truncated>

","[
  {
    ""hardware_name"": ""Antminer T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  }
]"
20599,"Date: 2015-09
Topic: cpu miner on raspberry pi bugging out bitcoincz
### Original post:
So I have my raspi set up correctly with cpu miner and it is running nice. I go to slush's pool to see how its doing. Worker offline. 0 this. 0 that. What is is saying is it thinks nothing is happening. My bitcoin wallet is also empty, meaning it cannot get past bitcoincz. Please can I have some help with this it is doing my head in. Thanks.

### Reply 1:
If your raspi had not found any shares yet (which is probably the case, cpuminer should let you know) then the pool will not know what your hashrate is. Since it probably isn't finding and submitting shares, you aren't getting paid because it has not submitted anything to the pool due to low hashrate.I would suggest that you not cpu mine on a raspi as its hashrate will be so low as to be negligible.

### Reply 2:
Slush pool only mines Bitcoin with merged mining. A raspberry pi will not stand a chance of being able to mine enough to be usable, and will likely not find a share at the pool's minimum stratum difficulty. A better use for a raspi may be to control more specialized miners such as asics, or fpgas for algorithms that might still be mineable on larger FPGA devices.

### Reply 3:
That's because your raspberry pi is garbage.You really shouldn't try mine a raspberry pi on SHA-256, (mining bitcoin)There are machines for that, LITERALLY a billion times faster than a raspberry pi.Try your PI out on Riecoin and see what hashrate that generates.You simply mine bitcoin with an ASIC purpose made machine. A raspberry pi is to CONFIGURE a hardware miner and send hashes over your internet, not to actually mine!

","[
  {
    ""hardware_name"": ""raspi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cpu miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitcoin wallet"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asics"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fpgas"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC purpose made machine"",
    ""hardware_is_owned"": false
  }
]"
8785,"Date: 2015-01
Topic: 2 Bitmain Antminer S3+ units DOA
### Original post:
UPDATE: They sent me an email with 2 tracking numbers,

","[
  {
    ""hardware_name"": ""Bitmain Antminer S3+"",
    ""hardware_is_owned"": true
  }
]"
21541,"Date: 2017-08
Topic: Write S1 load balance option
### Original post:
Can someone help me write it from basically scratch?I find the instructions but its like everything is completely split up.It'd be nice to have to gui drop down for load balance but I could also just input a quota or percentage.But I can't get anything to work because I'm trying to combine 3 guides because no one completely wrote it all out.I've flashed my S1 at least 10 times todayWell I seem to have gotten 1 method working. Its doing 3 pools all at once. Now I have to figure out how to get a priority quota working or some division between them

### Reply 1:
Don't use load balancing. Use Failover only so you mainly mine on ONE pool. The others are strictly backups.All pools these days use PPLNS or a variant of it and that means it takes time to build up your effective pool hash rate. Having the miner splitting its time between pools means that you never reach full speed (payout rate per-block) because your pool speed is constantly ramping up and down.

### Reply 2:
More importantly, dont use an S1. Thats just throwing money away even at 1c/kwh

","[
  {
    ""hardware_name"": ""S1"",
    ""hardware_is_owned"": true
  }
]"
13633,"Date: 2019-11
Topic: SSH Unlock & Signature Check Removal Tool • For Antminer S17/T17 and S15
### Original post:
SWEET , Love the work !! im glad i found this page , going to be deploying a bunch of gear and want to try to do the same in braiins it has cron tabs and i have edited that through winscp to curtail very low to no draw during peak hours when i get charged the most per kwhand back to optimal/full settings during off peak at a lower kwh rate. are there any examples of file edits ect for the s9/i and s17pro's Thanks FreemineUpdate :when does the s17pro firmware go live ? do you have any testing results ect, is there the ability to buy the firmware ? instead of dev fee ? for s9/17

### Reply 1:
Update for you all! I decided to make a little tool in vb and also added support for Antminer S15. All you have to do now is fill in the text field as you would previously and then press save. Then click whichever miner you are trying to unlock. After that is done wait a few minutes and then press Remove Signature. Hover ENG flash or RUS flag for instructions.Virus scan: <link> False positives because it is a dropper.... AKA drops all the files it needs from it's resources to your local appdata into a folder like this: <truncated> You can see it's just the batch files along with curl, winscp, and the files we are using to remove the signature.Let me know if it has any bug as I have only tested it with 1 machine but it is pretty straight forward none the less.

### Reply 2:
Should be live tomorrow. Only dev fee as the risk of someone sharing one without is extremely high.

","[
  {
    ""hardware_name"": ""Antminer S17/T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S15"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9/i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S17 Pro"",
    ""hardware_is_owned"": false
  }
]"
4580,"Date: 2013-03
Topic: Crowdsourced ASIC
### Original post:
You know, something just hit me. Would it have been possible, given all of the BTC and USD/EUR wasted on ASIC scams thus far, to have crowdsourced an ASIC?

### Reply 1:
Isn't that what BFL is?

### Reply 2:
You must be really new to bitcoins....We already have ASIC's And we already have ASIC's owned by multiple people (shares and dividends)

### Reply 3:
Yeah, I'm not talking about Avalon. I was specifically referring to the (most likely) millions of dollars wasted on ASIC scams thus far. We might have had another serious contender. Oh well.

### Reply 4:
Both BFL and bASIC were structured like crowdsourcing efforts, and we've all seen how that went.

### Reply 5:
It all comes down to who heads up the project after all the cash comes pouring in.Unless you have a competent team behind the wheel your gonna crash the party. Even semi-professional outfits like BFL that have delivered product(s) in the past have failed to live up to their promises. Same goes for the other end of the spectrum. IMO Crowdsourcing would work better for buying bulk prefab ASIC chips (from Avalon, maybe helv in the future) and working from there; less risk if <truncated> parties are involved. Vetting processes and possible recourse laid out in contracts etc...

### Reply 6:
August 9, 2012, forum user Friedcat describes investment opportunity for ASICMINER, which was to produce the chips to be mined by related organization MOORE mining. $100K USD funds raised via GLBSE (equity crowdfunding), a record for a GLBSE raise, I believe, up until that time.ASICMINER: Entering the Future of ASIC Mining by Inventing It- <link> 14th, 2013, ASICMINER running 2.0 Thash/s against BTC GUILD, with much more to com:- <link> first couple of weekly dividends on those ASICMINER shares were returning dividends of well over a third of the initial investment (in terms of BTCs dividend versus BTCs issued at).

### Reply 7:
bingo

### Reply 8:
I am interested in leading a crowd funded ASIC miner project.I have electronics and crypto background and lately I've been busy making a FPGA-based miner with Xilinx Virtex 6 devices.I never made an ASIC but I think that a period of 9 months should be enough (in this case the target would be by the end of the year).I know that by then the difficulty will be very high and this miner will not be able to bring the numbers that Avalon brings nowadays, but this project would further help decentralize the mining of the bitcoin (considering that today Avalon has monopoly).

","[
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    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFL"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMINER"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FPGA-based miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Xilinx Virtex 6 devices"",
    ""hardware_is_owned"": true
  }
]"
13874,"Date: 2011-03
Topic: Mobo confirmed to work 2/dual 5970's
### Original post:
I was all excited to plug in a second 5970 into my system, only to find that there is apparently a bug of some sort that keeps it from booting (can't even get to the bios screen and no video signal when both are plugged in). This is an ASUS M4A89GTD/Pro USB3. Don't not get this mobo if you plan on running dual 5970's.So, now that I have to get another mobo (and desiring not to be a beta tester for the mobo manufacturers), I'd like to find one that is *confirmed* (by someone actually running dual 5970s) to work. I need an AMD socket am3 mobo.

### Reply 1:
It's not the mobo. Your power supply is deficient. Buy an 800 Watt Antec or 800 Watt Corsair. And before you tell me, ""Well, I have a 1000 Watt XXXX Brand"" bear in mind that the ratings on power supplies are pure fiction. Here's a 1000 Watt Corsair delivered to your local Walmart for under $230. <link>

### Reply 2:
I do in fact have an Antec 1200W power supply...here's the model:<link> on the following thread, it seems I'm not the only one experiencing trouble with this mobo:<link> have opened an issue with ASUS. But the question remains...I'd like to hear from people with a dual 5970 setup with a socket am3 mobo, which specific model are they using?

","[
  {
    ""hardware_name"": ""ASUS M4A89GTD/Pro USB3 mobo"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""800 Watt Antec power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""800 Watt Corsair power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1000 Watt XXXX Brand power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1000 Watt Corsair power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antec 1200W power supply"",
    ""hardware_is_owned"": true
  }
]"
12017,"Date: 2012-08
Topic: SOLVED: BAMT restarting Cgminer 2.7.4 every time system clock reaches HH:MM:01
### Original post:
[solved by ckolivas, thank you!]Hi, I hope I found the right place for my post.I am looking for a help to debug a problem I think is something really really small, but still very frustrating for me.I am currently setting up my machines to use BAMT. BAMT came with Cgminer 2.3.x and it was too old for me so I successfully upgraded Cgminer to version 2.7.4 after first running BAMT fixer for newest BAMT fixes. Mining works for hours straight if I start the miner with command ./cgminer --api-listen --config <truncated> when in <truncated> my problem is:If I let BAMT start the miner when machine is started the Cgminer shuts down when system clock reaches HH:MM:01, every single time.And Cgminer starts again at 15 seconds later (HH:MM:16). This happens if I start the machine, or start the mining by command /etc/init.d/mine start or restartI guess this might have something do to with me using different version of Cgminer than the one which came with BAMT. New info: I tried with Cgminer 2.3.1f which came with BAMT, no problems with it!Any ideas for a fix or ways to debug this more? Thank you!Here is a log from /var/log/bamt.log, which just tells Cgminer is stopped and started again, and stop<rest of post truncated>

### Reply 1:
I was having the same problem! Thanks so much for the new ""mother"" ckolivas! I will send you some coins when i have them

","[
  {
    ""hardware_name"": ""BAMT"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cgminer 2.3.x"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cgminer 2.7.4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cgminer 2.3.1f"",
    ""hardware_is_owned"": true
  }
]"
7208,"Date: 2014-03
Topic: AntMiner S1 Slowing Down My Internet Connection :(
### Original post:
[sorry for posting this is in the wrong section... I hope a moderator can move this to the right area... thanks]Hi all,I have a pair of Antminers that have been happily making BTC for the past couple of weeks.But last night, both of them started slowing down my internet connection.I have ADSL that normally runs at 10mbps. But when one antminer is connected to the network, the speed of my internet drops to 0.5mbps - which makes my internet practically unusable.If I disconnect the antminer from the router, the speed of the internet increases back up to 10mbps.Any ideas on what may be causing this issue?Thanks!

### Reply 1:
Are you mining via the Stratum protocol?

### Reply 2:
Thanks for your help.One miner is looking <truncated> other is looking at:<link>

### Reply 3:
Put em both on the same <truncated> get what seems to be one big miner Hell I have 3 Ants on BTC & 3 vidcards mining altcoins & my internet doesn't slow down at all,course I have cable,not DSL

### Reply 4:
Wow... using the same stratum url has improved my internet speed... thanks!

### Reply 5:
Post here in the future for help: <link>

### Reply 6:
strange. mining usualy uses just some kB/shad run mine over Poweline with netto just some Mbitshell you could run that even on dialup 56k...

","[
  {
    ""hardware_name"": ""AntMiner S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ADSL"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""vidcards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Poweline"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""dialup 56k"",
    ""hardware_is_owned"": false
  }
]"
4598,"Date: 2013-03
Topic: 16 Avalon photos
### Original post:
Thanks man !

### Reply 1:
Ok, now can you take those photos down until you watermark them?Because I can guarantee if you leave them like they are they will end up on ebay on scam listings.The community thanks you.

### Reply 2:
So each larger module is composed of 8 smaller modules?I really do wonder what Gen 2 will bring. I had thought that the large modules were one solid piece....apparently they break down into even smaller ones....

### Reply 3:
Hi jonnyj Can you tell me if you where in Batch #1 or Batch #2 and location thx.

### Reply 4:
You are a lucky dog. I'm in China and have not received my batch#1

### Reply 5:
Great unboxing thread.You say wow about the tape but I said my own wow about it - just not the wow you are thinking of. As someone who is involved with materials testing I instantly recognize that as Kapton tape. Google it. It was used on the Apollo missions and has the best temperature resistance of any tape out there. It is truly a space age material. It may just be one of (if not) the most expensive tapes you can buy.

### Reply 6:
batch 1 order 198I remember that I waited until count down and the ordering website was immediately overloaded by users and crashed, I tried again and again for another 1-2 hour and finally got one order in, just lucky and some patientI believe Avalon team is working full speed to make the delivery. But it is a tough task for a small team to deliver 900 units in one-two month, include the test

### Reply 7:
That backplate holds 8 submodules, but the heatsink size is fixed. I think gen2 will be the same as gen1 for hashing unit, maybe the control unit is upgradedI just checked Avalon's claim back then: ""If the prototype can be made before the end of January, then mass volume production will be guaranteed. If the prototype can not be made before end of January, you will get refund.""So they did follow the schedule, just no time to talk, no tracking email... All my messages and tickets were ignored, kind of scaring

### Reply 8:
They should use a modular PSU to get rid of all the excess cables. Very messy.And why the third different fan? Probably just there to prevent circulation back through the third hole and they use the same front/rear plates.Hopefully they make improvements for V2. However I don't think they will last much after V3 with the 28nm ASICs due later in the year.

### Reply 9:
They can keep it backward compatible so that v3 modules fits in the case, the case is really luxury, pure aluminum

### Reply 10:
congrats. even a lots of chinese customer haven't got the unit yet. I really doubt they can finish batch #! before May, according the delivery rate

### Reply 11:
2 points:1, keep the case closed. 2, the 40pin ribbon cable our using is not IDE cable. IDE cables have some internal connect.

### Reply 12:
Thank you for the great pictures!Ngzhang, you should feel very proud!- originally, due to lack of high quality photos and some misunderstanding, I was under the impression that the fans were exhausting heat, blowing out. Now from your photos it *looks* like the fans are intake fans to blow cold air into the case (makes much better sense) can you confirm?- also, I am assuming that I should have no problem replacing the PSU with a modular one? (I've got a silverstone 1200 gold that is sadly under-utilized atm) - should easily handle a fourth module when the time comes.- I was also thinking of using some ducting in the extra space from the missing 4th module to force air through the fins. I'm now thinking this is unnecessary as the bottom module should be the coolest one anyways, and ducting may have no effect on increasing air flow through the upper 2 modules. After seeing some of Ngzhang's comments I'm thinking the only mods I'll be making are replacing the PSU and directing an AC unit blowing towards the intake. And of course adding 4th module when they come available

### Reply 13:
Thanks for the advice, is this mean that I can not use the own cable to re-arrange the modules? I think they should be shifted to the other side of case to avoid overheating close to the PSU

### Reply 14:
The upper side close to PSU is very crowded, I think the airflow here is not very good, I can feel by hand that module close to PSU is the hottest one. So I plan to move them to the lower part, but I'm afraid the cables are not long enough. Anyway I plan to use an external blower fan directly blow on top of them no matter the temperature. I might take everything out of the box and put them into my totally ventilated basket on balcony

### Reply 15:
Wow, nice pictures. I wish I'd been the guy to do it, but I instead just plugged mine in first thing.I think it's a shame how some ppl are failing to appreciate the design that went into the Avalon cases, and are planning to drill them full of holes, or get rid of the case completely. I can only hope that they'll sell what's left of the Avalon to me after they kill i<rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Kapton tape"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""modular PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""28nm ASICs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""40pin ribbon cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""IDE cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""silverstone 1200 gold PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""external blower fan"",
    ""hardware_is_owned"": false
  }
]"
22240,"Date: 2018-01
Topic: ADVICE - One board on S7 shows zero as temp and HIGH HW errors ???
### Original post:
Hi AllAll of a sudden my S7 has developed a problem as in pic below....It will run for 30 mins or so then it starts 'beeping' and stops mining and the temp shows 100 !!!Anyone got any ideas ?What board is it (i think it is the furthest from the ethernet port) ??ALSO is it ok just to power one or two of the 3 inputs on the faulty board ??I have tried various psu's and still get the same and each PSU powers ALL boards...as obvious.Cheers

### Reply 1:
Had that exact issue with one of mine. Eventually I could not get it to mine at all with that board connected because it always showed a random temp above 90 (usually like above 110-130) which prevents it from mining. I sent it to Denver for repair. Cost $75 for repair plus something like $25 for shipping.This is the place that can do repairs: <truncated> looking at the site: <link> I see that they have S7 boards for sale directly so you may want to just go that route. Why the 45 chip board costs more than the 54 chip board I do not know (maybe because it runs at a higher freq?).

### Reply 2:
I can not see any boards for sale on the site ? Only Hosting ??Thanks

### Reply 3:
Hi, Chain 1 is the 1st board on your right when you are facing the front of the miner (with Ethernet port).It is ok to run just 1 or 2 boards. You just have to disconnect the power and data cable of the faulty board.

### Reply 4:
Cheers, so what i thought was correct then, board one is basically opposite to the PCIE supply for the control board..What i also asked is it possible to run one or two of the inputs (out of the 3) on the faulty board ?

### Reply 5:
Yeah, don't tell anybody this but you don't have to supply power to all 3 pcie plugs. If you are running a full s7 at full clock speed then I wouldn't use less than 2 of the plugs per board.It will run power to the entire board though...even with 1 plug.I have one running with 1 plug per board. It's underclocked mind you... 1 pci-e plug won't be throwing more than 300 watts...you don't want all that power going over a single wire/connector.

### Reply 6:
So, I've got a S7-LN that started doing this, temp. on one board is near 90 while the other is in the 30's, all 45 ASICs appear to be working on both boards. Mines for a while, then lots of HW errors and beeping which then stops mining. Is this something that can be fixed?

### Reply 7:
The temperatures are pulled directly from the hashing chip, normally chip #45 the last in the string. Outside of replacing that chip there is not much to be done.

","[
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7 boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""45 chip board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""54 chip board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7-LN"",
    ""hardware_is_owned"": true
  }
]"
18322,"Date: 2013-12
Topic: URGENT How do you turn on ASICMiner backplane power supply?
### Original post:
How do you do it? I got 10 blades, backplane, and this <link> and it doesnt turn on. 12v standby is working, but no full 12v. I tested it with multimeter and shorting pins 33 to 36 as shown in <link> and my multimeter shows 12v on the fat tabs and it turned on then. But how do I turn it on in backplane???

### Reply 1:
That's the right PSU.Do you mean the PSU won't turn on?Use a multimeter to test and see if it's outputting any voltage. Also, check to make sure the power jumper is installed on your backpane, since that's the ""power on switch."" Do all this prior to plugging on your blades.If PSU turns on, but blades don't, then make sure you didn't blow the blade's fuse w/ the wrong supply that you plugged in...

### Reply 2:
The jumper is installed. One of the power supplies eventually sprang to life, presumable after it warmed up to room temperature. The other one though still refuses to power on. I think it's dead on arrival. I tried shorting pins 31 to 34 (it worked for the first correct psu) and it doesnt turn on

### Reply 3:
Have you tried plugging the blades into a normal 12v 8A source?? You may have damaged something if the other incorrect power supply turned on while the blades were plugged in... such as overvolting or shorting something out.The other PSU you have seems to be dead... it's not always the best idea to buy the cheapest possible item either.

","[
  {
    ""hardware_name"": ""ASICMiner backplane"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blades"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""multimeter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power jumper"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""normal 12v 8A source"",
    ""hardware_is_owned"": false
  }
]"
4632,"Date: 2013-04
Topic: Can some one Clear up if a single BFL asic has been shiped or seen working
### Original post:
Can some one [MOD/ADMIN] Clear up if a single BFL asic has been shipped of seen working and then STICKY ITbecause there are adverts saying both ways and so much spam and FUD about this we need a definitive statement....And the community has at least been stung by this

### Reply 1:
Seen working video and screenshots if hey are real. I believe they are.None have shipped and the ETA is OCT 2012 yea 2012..When they ship you can bet your ass it will be all over the place.Did you even look at BFL's website? Wouldn't that be the place for your so called definitive statementPut some effort in, that is how grown ups do it.. Mods are not mommies little fellow j/k.

### Reply 2:
but every 10 th thread is BFL was shipped I woz robbed by BFL, BFL delivered difficulty going up, there so much static its hard to get the signal to the point BFL could be all over this forum, and it would be that was Photoshopped fake, extra has is botnet hash

### Reply 3:
The day before April 1st, BFL claimed to have shipped a unit, but it's bullshit. They didn't ship anything, but they do have a working unit. It underperforms and over consumes power. It's a shitty final product, if they consider that their final product, but they are tweaking the boards and chips and whatnot trying to bring power down and raise hashes. It'll be another couple of weeks before they really ship.

### Reply 4:
Couple of months?

### Reply 5:
this is the most accurate and concise description i've seen...

### Reply 6:
I don't believe there has been credible proof that BFL has a working ASIC device. You would need someone independent (i.e. not a BFL employee, contractor, developer, etc.) to receive, inspect, and test the device.I also find it highly unlikely that BFL is solvent, and probably poses an imminent bankruptcy risk. Their predominant source of revenue is from taking preorders for devices that do not, and may never exist. However, they continue to incur significant expenses: staff costs, advertising, travel, ASIC development, board development (and, apparently, re-development), etc. Their liabilities to customers most likely exceed the cash they have on hand. Furthermore, it is possible that when/if they do develop a device, that it will cost them more to produce than their current sales price.

### Reply 7:
If they go on with the plan to ship 2 devices instead of one per order because of the +4 times higher than expected power usage they are looking at doubled manufacturing costs. That kind of miscalculation can easily cause major economical problems. Without extra funding they might just end up beeing bASIC collapse v2.

### Reply 8:
I started a thread about this a couple of days ago, though this is probably something that should have been discussed months ago:<link> my opinion Bitcointalk shouldn't run clearly fraudulent ads, no matter if they're getting paid or not.

### Reply 9:
I also note the adds on this site ""Advertisement: BFL Single SC - 60 GH/s for $1299.00 - <truncated> nothing to help!!!!Its like the site ADMINS/MODS on one hand label people scammers, but then accept adds from them, or a least he people paying for adds are not scammers?

### Reply 10:
Yeah you gotta wonder, it undermines alooooot of credibility doing this

### Reply 11:
+2Sharp newbie is sharp.

### Reply 12:
Thank you. Somewhat remarkably, after posting that, they reduced their specs and raised their prices. Hmm.

### Reply 13:
Chalk it up to supply and demand: The more people who pre-order, the less there are available for the next guy, hence the increase in price to be fair to all and to protect the network.

### Reply 14:
We had photos and BFL/Luke_Jr claimed it to have shipped, but it was a prototype on a test bench and never left the Butterfly Labs building.Luke_Jr was flown in at BFLs expense to do some programming so is more employee/consultant than customer, so not <truncated> it seems to mine 25GH/s just like an old FPGA Mini Rig! Google ""Sonny Vleisides"" and see the past criminal record for an international lottery scam. I hope they deliver, for the sake of the Bitcoin project, but I'm not convinced.

### Reply 15:
Raising the price to late entrants kinda makes it look like a Ponzi scheme though. But at least we didn't have to listen to stories about how every ASIC they produce is their baby and they don't want them going to untrusting owners. LOL (Avalon Adoption Agency)

","[
  {
    ""hardware_name"": ""BFL ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGA Mini Rig"",
    ""hardware_is_owned"": false
  }
]"
12467,"Date: 2013-06
Topic: Crash Report
### Original post:
Asteroid crashes when I do either of the following things:Choose a bitcoin or litecoin pool, enter any username and password(valid or not), and press accept or cancel.Press the play button over the hashrate indicator bar.The ""Send Feedback"" button on the ""Feedback"" window doesn't do anything. (That's why I didn't send feedback through that route.)I am on a MacBook with a 2 GHz Intel Core 2 Duo Processor, 2 GB 1067 MHz DDR3 memory, NVIDIA GeForce 9400M 256 MB graphics, and I am running Mac OS X Lion 10.7.4 (11E53).Here is the crash report from one of my <truncated> Asteroid [5155]Path: <truncated> <truncated> 0.8.0 (15)Code Type: X86 (Native)Parent Process: launchd [244]Date/Time: 2013-06-25 20:03:48.615 -0500OS Version: Mac OS X 10.7.4 (11E53)Report Version: 9Interval Since Last Report: 3821199 secCrashes Since Last Report: 219Per-App Interval Since Last Report: 945 secPer-App Crashes Since Last Report: 13Anonymous UUID: <truncated> Thread: 0 Dispatch queue: <truncated> Type: EXC_BAD_ACCESS (SIGBUS)Exception Codes: <truncated> at <truncated> Regions Near 0x20:--> __PAGEZERO <truncated> [ 4K] ---/--- SM=NUL <truncated> __TEXT <truncated> [ 4K] r-x/rwx SM=COW <truncated> Specific <tr<rest of post truncated>

### Reply 1:
Thanks A_Member! That's the first serious problem I've seen reported on the latest build. The send feedback routine didn't work because the miner backend hadn't created a log file yet, which Asteroid erroneously assumes is always the case, so at this point it could be a problem with Asteroid. I'll attempt a few things for 0.8.1 that should help with your setup.

","[
  {
    ""hardware_name"": ""MacBook"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2 GHz Intel Core 2 Duo Processor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2 GB 1067 MHz DDR3 memory"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NVIDIA GeForce 9400M 256 MB graphics"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Mac OS X Lion 10.7.4 (11E53)"",
    ""hardware_is_owned"": true
  }
]"
21981,"Date: 2017-12
Topic: Missing  IP address on one of two S9 Antminer
### Original post:
I use Angry IP scaanner to get IP addresses on 2 newly aquired Antminer S9.I got only 1 IP address,the other 1 is missing.So I configured ! only.It worked well.Please help me to get the other missing IP adddress on the other S9.

### Reply 1:
Bitmain had their own software i don't think angry ip could scan the other ip for antminer .. Try this software and hope it can scan your ip and mac. <link> you should press the ip reporter from the unit to detect by the ip-reporter software.

### Reply 2:
Steps that I have done to get back the IP address on1 of S9 miner.1.Switch off the unit by switching off the PSU.2.Wait a few seconds,and with left hand ready to press IP report pushbutton,and wuth right hand ready to switch on the PSU.When ready simultaneously press the button for not less than 5 sec and PSU switch on.3.Run any IP scan program.In my case I use Angry IP scanner.4.Copy/ paste IP address to any browser.

### Reply 3:
Just look up the IP in the DHCP report on your router. It should tell you exactly what IP it was given.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Angry IP scanner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""IP reporter software"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IP report pushbutton"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Router"",
    ""hardware_is_owned"": false
  }
]"
3918,"Date: 2016-02
Topic: [PRICE REDUCED] DPS-2000BB 2000W Server PSU Interface Board
### Original post:
Can I stray a bit off topic and ask the question: What's the back story of these surplus power supplies? They seem to have made a lot of them. Did they actually go in server computers? I was thinking maybe they used them for powering wireless telecommunications? That would explain the trainloads. Does anyone have any of these power supplies that came with a history?

### Reply 1:
This particular PSU was used in IBM BladeCenters. I think each 6U machine had 4 PSU in it. Not sure if they had any other purposes from the start.

### Reply 2:
Thanks Sidehack! A quick wiki search yielded this juicy picture:(They look a lot more shiny and new than mine LOL)

### Reply 3:
FYI, as far as as I can tell from looking at the pin outs, the DPS-1600BB (147.5A @ 12.2V 1800W), DPS-2000BB (164A @ 12.2V 2000W), and the DPS-2500BB (205A @ 12.2V 2500W) are pin compatible and the DPS2K adapter board and should be a ""Plug 'N' Play"" on these supply's. Just ordered qty 16 DPS-1600BB's and when they come in will test and report back. We scarfed these in the salvage market for $8.74 each + $10 shipping. Total cost each was $18.74. Helluva' supply for $20.These supply's have NO internal fans and in a stock configuration (i.e. installed in an IBM BladeCenter) are cooled by case air. Adding 40mm fans to the side of the power supply case for cooling is MANDATORY.We anticipate using these in our mining farm to power OC'ed AM Prisma's.One supply per Prisma.Of other interest is, the efficiency of these supplies under light loading (250W draw) is 87%, at or near rated output the efficiency rises to 92%.So from a Bitcoin mining perspective it's better to run them WOT (Wide Open Throttle) than to be <truncated> in the RC community have reported about the DPS-2000BB's that when tweaking the output voltage to 14.6 and tweaking the Over Power Cutoff the DPS-2000's can supply 2800W<rest of post truncated>

### Reply 4:
Our boards were designed for a 240A rating, and the first one was stress-tested to 200A for a full seven days with zero problems. It was actually a current-sense board, so the PCB had to deal with the extra heat of 200A shunts and still performed beautifully; stock boards will do even better. They should be alright for a DPS-2500BB.The only thing about adjusting the DPS-2000BB settings is, over-current is an internal pot so you might have to take the case apart - which is actually very easy. Overcurrent protection usually kicks in just shy of 200A but can be adjusted up over 210A I think.Output voltage adjustment is not implemented on our boards, partly for safety reasons. We didn't want someone grabbing the wrong knob and roasting all their hardware accidentally.

### Reply 5:
sidehack,Is the price still ""reduced"" -- or does the thread title / OP just need to be updated? (I saw conflicting info -- one post said through the end of October, another suggested the sale would last until the Prisma group buy had concluded... Etc.)If things are still on sale, could you maybe...say what the prices are, because the original prices, the dropped price, the discount amounts, and the recent sale -- it just...um...seems kind of scattered about all over the place and it's kind of hard (for me at least) to figure out what the actual *price* is.I realize I should be capable of locating this information -- but I formally admit defeat and would kindly request a current price list, just whenever you get the time...not a rush or anything. Thanks!

### Reply 6:
Yeah I guess the title needs to be updated.In any case, the prices in the first post are the current prices. We had a housecleaning sale a few weeks ago and dropped all prices, but that has ended.We're still offering a 10% discount to anyone purchasing to power hardware from Canary or CrazyGuy Prisma GBs though, just gotta let us know that's what you're doing. There's no particular reason, just we like those guys.Novak and I were discussing pricing the other day though, so I'll talk to him and see if we're gonna make any changes. As of right now, what it is is what it is.

### Reply 7:
if someone in Europe is interested in single quantity boards,im willing to sell 3-4 of mine atm for the price i bought themthe postage should be like 6 for a letter or 10 for a parcel

### Reply 8:
Also, we have reduced prices. Price breaks are now $55, $52, $50, $48 for the quantities listed.Pretty soon we'll be able to offer more or customizable cable options as well.

### Reply 9:
We are now shipping from standing stock.Updated details at <link> at Gekkoscience don't really like to do preorders. We've never done one before, because we much prefer to only take money from people when we can immediately ship them the purchased product. This time around though, we have to do things a bit differently and we're gonna try our best to make sure it's better for everyone.We've assembled and successfully tested our prototype<rest of thread truncated>
","[
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    ""hardware_name"": ""DPS-2000BB 2000W Server PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IBM BladeCenters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DPS-1600BB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""DPS-2500BB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AM Prisma"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""current-sense board"",
    ""hardware_is_owned"": true
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]"
20193,"Date: 2015-01
Topic: Antminer S3 Problems, please help!
### Original post:
So i got my Antminer S3 a few days ago, and i've been trying to get it to work ever since. I have a default gateway of 192.168.0.1 and CANNOT change it, and Dogie's Alternate Subnet Setup didn't work at all, it just didn't recognize my computer either. The S3 needs a gateway of 192.168.1.xx to work i believe, and i don't know what to do, please help me any suggestions or anything would be appreciated.Note: Please forgive my grammar, it's very late here.

### Reply 1:
Do you have access to a crossover cable? If so, plug the unit directly into your computer with it assigned to a working IP address in the 192.168.0.x range and you can then program the S3 at this point...

### Reply 2:
First you need to change you pc ip address to 192.168.1.10, subnet is 255.255.255.0Then connect ethernet cable directly from your pc to s3.Open web browser then access 192.168.1.99.Then go to networking setting tab to change s3 ip example to ip : 192.168.0.99, subnet : 255.255.255.0 gateway : 192.168.0.1 dns : to your isp dns or use google dns 8.8.8.8

### Reply 3:
All i have is a patch cable, would that work?

### Reply 4:
If not i could just buy a Crossover cable

### Reply 5:
It's should be work.

### Reply 6:
Did you sorted out yet?

### Reply 7:
No, no matter what i do it won't work, Zich's instructions didn't do anything at all, i open a web browser, type 192.168.1.99 in the address bar, and it just says ""Connecting..."" in the lower left corner, then tells me it couldn't connect, then i try to ping 192.168.1.99 with cmd and EDIT: It actually says ""your computer isn't connected to the internet"" so it won't connect, even though the thing is direct connected to my computer........

### Reply 8:
Type ipconfig/all on cmd then please post the result screen shot

### Reply 9:
I ran out of warranty time and had to return it, i'm sorry guys, thanks for at least trying to help.

### Reply 10:
No problem dude, no need for sorry

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  {
    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""crossover cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""patch cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ethernet cable"",
    ""hardware_is_owned"": false
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]"
5883,"Date: 2013-08
Topic: Avalon Store Batch 3 Status just went to ""Refunded""
### Original post:
Great, maybe something will move on with notrefunded orders ;XEDIT: now store gave me error.

### Reply 1:
Order #47xx, the status is also refunded. But nothing in my wallet yet...

### Reply 2:
Mine just went to refunded too. No BTC hit my wallet yet.

### Reply 3:
Oshiiit mine went refunded too, no BTC also yet.

### Reply 4:
Yep, mine went to refund too.And no btc received either..

### Reply 5:
Mine changed to refunded as well. I haven't been able to check my wallet yet for the coins, but will take a look tonight.Has anyone got both 'refunded' and received their coins?

### Reply 6:
Showing up as refunded, no coins yet here either

### Reply 7:
Yeah nothing yet on my end either.

### Reply 8:
#70xx ""refunded""

### Reply 9:
I'm #44xx and also at ""refunded"" status, but nothing in my wallet yet.

### Reply 10:
I was sure #3 started with #4500 ?

### Reply 11:
I was likely one of the first, if not the first to order. I had my order in within seconds of the store opening.

### Reply 12:
Speculation: If they are doing a refund sweep of the order book, they might be starting the fulfillment <truncated> scheduling for the batch.

### Reply 13:
Sure hope so. But 'shipping' was to start Monday. Production should have happened a few weeks ago.

### Reply 14:
I wonder if they will sell the units that people got a refund on?

### Reply 15:
Refunded is past tense for refund right? Did I miss something?

### Reply 16:
AFAIK no one in this thread has received their coins yet.. just the store update to 'refunded'. I agree that it should say 'refund in progress' instead of 'refunded' or something to that effect.

### Reply 17:
I'm happy to see all of these refunds on order numbers less than 6xxx.

### Reply 18:
Order changed to ""refunded,"" but no coins received yet.Order #8xxx. How do you like them apples?

### Reply 19:
@BitSyncom do you care to input any information at this point? Saying everyone has been refunded when in fact no one has seems a bit odd, if not extremely suspicious. There was an option that a Russian was able to do through Bitpay. Is this how the refunds will ultimately be processed?

### Reply 20:
Same here

### Reply 21:
Really? Did all you guys actually ask for a refund too? I don't see anyone saying that.I asked for a refund on Friday I think it was, using the link provided in the newsletter they sent out that day, gave them all the details they asked for (Bitpay URL, Order#, etc.) and received a full refund practically that day. Maybe I was one of the first refunds they processed, dunno.I asked for a refund because the numbers seem too skinny now; I doubt whether we could have achieved ROI, too many unknowns.Also, my store status says ""refunded"" also. Maybe it's just a store bug on their part if you guys didn't ask for refunds.Or maybe they've decided to refund everyone and are waiting to get send-to addresses from you all. I gave them a new address, I didn't receive coins from the one I originally sent from.Also, my order number is in the 9000's.

### Reply 22:
It's hard to believe you at this point since there have been so many trolls on these threads.

### Reply 23:
I asked for a refund too, a few days after the newsletter. This morning, status was updated to 'refunded' with no actual refund provided.And the form we submitted had an address field where we type in the send-to address, so that should not be a problem.

### Reply 24:
^^ Why is it only 36 BTC?Nevermind, saw your editMy new guess is that maybe they don't have enough BTC stored to refund everyone right away. Seems like at least 20 people got refunds. Probably more than that.Disclaimer: pure speculation

### Reply 25:
Look at the address in the blockchain. All told, it was refunded ~101 BTC. The refund was sent in four smaller installments.

### Reply 26:
Same here

### Reply 27:
I'd guess most of the people who asked for a refund early on have got it by now and I'm just the first early-asker to see this thread. They're processing these by hand, no doubt. Maybe they've gotten way more refund requests than they expected.Sad thing is, maybe that's delaying B3 shipping for those who stayed the course too.

### Reply 28:
What sort of proof would you like. I assure you I'm being forthright here.I was about to give the blockchain.info transaction URL in that post but I didn't particularly want to dox my coins. But I guess it doesn't matter really ultimately. Here the tx off my QT:Here's the corresponding Blockchain url: <link> tried looking backwards into a few of those sending addresses but didn't find anything particularly interesting. For all I know they're purchases off some exchange and not even related to Bitsyncom or Bitpay. Maybe we have some blockchain wizards in here whom can bring blockchain-treeing visualization powers to bear or something.Edit: Here's the other tx's to fill out the full 102 btc or w/e, plus some change I already had on t<rest of thread truncated>
",[]
4233,"Date: 2012-11
Topic: BTCFPGA bASICs ""ready to ship""
### Original post:
So we can infer:1. Final ASICs have been cut out from the wafer and will be tested.2. PCBs will be assembled soon after.It looks like December will be the month of ASICs and BFL will fall flat on shipping before anyone else.

### Reply 1:
For me sounds like Order Processing Status<link> more nothing lessTesting, debugging, bug fixing, bitstream develepmonet soon after......ASIC's will be available next year - personal opinion

### Reply 2:
I'm pretty sure this is the case, as cablepair announced he had working ASIC prototypes at the end of September.But it seems everyone's forgotten about that after Inaba started running around the Custom Hardware board waving his penis in the air.

### Reply 3:
Don't act like you're not impressed!But srsly, check this out, it basically means nothing:

### Reply 4:
btcfpga and BFL both have a Dave doing PR? <link>

### Reply 5:
IMO the whole race for fist production ASICs is at the finish line, we just have to wait a little more

### Reply 6:
LOL @ bitstream development

### Reply 7:
Go bASIc go! Oh, wait, Go BFL, go! Lol! I'm not in the first batch so whatever. Good luck to everybody and let's see those ASICs mining.

### Reply 8:
What is so funny? Call it Firmware or whatever..but for sure some software development shall be done after the hardware production. Am i missing something here?

### Reply 9:
""develepmonet"" was pretty lol.

### Reply 10:
That's french aint it, It means making art,right

### Reply 11:
People probably forgot about it because it looks like nothing came of it. cablepair offered ""raw"" ASIC chips, which probably means they have not been coded to actually hash.Topic is still listed as ""Bounty Offered"" from September. No posts by this user have referred to this again. Referring to this topic, it's clear that payment processing and whatnot is all that is happening. Tom has not announced an actual timetable for completion and shipping, and as of a few days only said that things look like they ""should be on time"", meaning things are not finalized, and as with all things in life, are susceptible to unforeseen circumstances.With that said, bAsic at least on paper sounds like it will be first out the door, time will tell.

### Reply 12:
Do you realise there is no such thing? ASICs must be ""coded"" before they can be produced. ASIC without the ""code"" is just a plain piece of silicon. Do you think that's what they offered?

### Reply 13:
Potentially, perhaps that is why no such deal was made? But I see your point, and retract that portion. I still foresee that it was a vapor-offer, as to why it was never finalized.

### Reply 14:
Having our orders Ready To Ship will save a lot of time for the ship team. If we had waited until product was in the shop, sorting out all the orders, payments, free & paid upgrades, shipping upgrades and special customer requests would have brought our process to a standstill. Mine and Tom's intention was to get everything staged as far as possible so we don't fall down at the goal line.We'll have boxes & bubble wrap, shipping labels and everything ready so the units could literally be packaged while still warm.Getting these bASICs out to customers on time will require a lot more than just having the product in hand...

### Reply 15:
Got an email about the status of my order. You guys are doing a great job of communicating dave. Keep up the good work.

### Reply 16:
How tempted are you to pop the bubbles in the bubble wrap?

### Reply 17:
Haha, good one!

### Reply 18:
Cuz bitstreams make no sense in asics.Unless you are talking about a FPGA prototype and a fpga conversion asic, which oh btw I have been telling people all along.

### Reply 19:
I hope you guys are prestaging a lot of other things too, like the stations that are going to be used to load the firmware and test the devices. Be sure you have lots of USB cables, power cables, power supplies, power strips, etc on hand, with spares, and test the cables and power supplies and PCs etc beforehand.

### Reply 20:
If I knew I could get one I'd have that cash fall out of my pocket so fast...

### Reply 21:
There might be a possibility. I don't know where they are on 2nd batch pre-orders but they might have a surplus in the first run. Also, some people are offering their first runs with a premium on the BTCFPGA forums. You might be able to pick one up there.

### Reply 22:
So, let me get this straight. BFL is constantly harassed over every little detail. Meanwhile, on the other side of the aisle, bASIC fans are currently in a whirlwind of excitement simply because Tom didn't screw up some standard clerical work with his invoices?

### Reply 23:
This is due to the fact that Tom doesn't lie every time he says something, unlike the reps on the other side of the aisle....or do you consider the difference in ROI for BFL pre-order customers hashing in October against a 25m difficulty and 50BTC blocks and hashing in Decemb<rest of thread truncated>
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17556,"Date: 2013-04
Topic: Quick question about a deal
### Original post:
Is this a good deal from mining perspective?ASROCK K7VT4A, MSI K7T266, Athlon 1600, M848A, Sempron 2500, Sempron 2800, 1x mATX Gigabyte FA-8S 649 MF, Athlon 1600 CPU, Athlon 1700 CPUFor 71$

### Reply 1:
Those all CPUs and MBs? You need some GPUs to mine, really.

### Reply 2:
Yup, but that was only for the mobo side.I decided to buy newer ones, though.Thank you for your hard work : D

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    ""hardware_name"": ""Athlon 1600"",
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    ""hardware_name"": ""Sempron 2500"",
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    ""hardware_name"": ""Athlon 1600 CPU"",
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    ""hardware_name"": ""Athlon 1700 CPU"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""GPUs"",
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]"
8834,"Date: 2015-02
Topic: [ANN] Twinfury USB miner
### Original post:
Hello,I published a new post on the minecoin.net website about the firmware update for supporting the supply voltage scaling of the Bitfury chips. If you are interested, have a look: <link>

### Reply 1:
Any other news/changes with that Firmware ?? Should we update the first serie of TF also ??@Aauer1Hast Du meine Email bekommen ?? ;-)

### Reply 2:
If you want to use the voltage scaling feature (which requires to assemble a resistor), you should update the Twinfury.

### Reply 3:
Maybe, some of you have already noticed that we lowered the price again for the Twinfury.

### Reply 4:
Can you please provide a link to download the updated firmware ? My old eyes can't spot the link for the mentioned archive <truncated> anywhere...

### Reply 5:
Here it is: <link> guess I missed it to post it into the post. Sorry for that.

### Reply 6:
Hello Community,I would like to annouce my latest development. It is a ""Twin Bitfury Chip USB Miner"". It is the further development of the Blue-/Redfury miners I developed some month ago. I'm posting this because a very limited number of 200 devices are manufactured right now. They will be available soon for sale.Some specs of the device:Rated hashrate: 4.5-5GH/s (Prototypes are currently hashing stable at 4+GH/s on an USB 2.0 port)Power usage: ~3.25W@4GH/s <truncated> L55mm x W35mm x H37mm (including the heatsink and the components on the PCB, USB connector excluded)Powered from the USB port. No external power supply neededTemperature sensor to measure the device temperatureSoftware controlled voltage scalingCompared to the Blue-/Redfurys, the Twin Bitfury Miner is about 5mm wider and 10mm shorter. The heatsink is bigger to cope with the generated heat of both Bitfury chips. An additional temperature sensor is used to track the temperature of the device. Currently, the device is running with a modified version of bfgminer 3.6.0. The device is supported by bfgminer 3.7.0 and higher. The Twinfury miner is tested on Windows, Linux and Mac OS. The Raspberry Pi can also be used to use <rest of post truncated>

### Reply 7:
HelloI'm Vincent from China. I have electronic product factory and interesting to expand business to bitcoin usb miner product. After following your project about bitfury , I want to make this product for you and sell it together. I can help you make in batch on my cost. 0% investment from your side.How advantage you got after let us join ?- You can make your project on zero investment from now and zero invest for batch producing of the product you want to make.- you will got money from each pcs of USB miner we sold out.- you can sell in other channel by yourself but that buyer can not buy from you and sell back on the same channel as us.How about this offer ? Please let me know your idea.regardsVincent

### Reply 8:
A friend of my is sending two unit to tryout.Will this still make any money if i used sha256 switchpool in stead of bitcoin?

### Reply 9:
Hi,i just bought a used Twinfury.I installed the Driver on my Win7-PC and startet mining using BFGminer.Sometimes a get a couple of ""query timeout"" Errors.Is that normal?If the miner is working the temp reaches around 70CWhat is the max temp?What if it`s getting hotter then the max temp?Will it should down by itself?Do i have to set some Settings at the device-manager like baud, databit, Stoppbit, .... Are there any BFGminer sepcific commands i have to use?Or is there any Manual out there?Regardshabich

### Reply 10:
<link>Nice rig people!

### Reply 11:
Hey thereI really need help, i bought 2 Twinfury Miner, they mined now for long time, yesterday one of the two stopped working.Wenn i try to start bfg miner whit the stick plugged, only yellow led on stick is shining, and bfg miner dont find the stick.I tryed to reset the stick whit the buttons on it, also not working. If i reset it red led is shining, the start bfg miner, and it switches back to yellow led, and miner software can recognice it... im so tristy that my twinfury is dead.. pls help =)I testet it on different systems, and miner-software.Can anybody help me?

### Reply 12:
I have just bought 2 of these miners off someone and one works fine all four lights light up but with the other one when I plug it in the green and two orange light up only and then when I launch my miner the green goes off and the red comes on and it won't give me any hash at all?? Anyone know what that might be from or how to fix it?

### Reply 13:
these units need good usb hubs. how are you powering these?

### Reply 14:
I can answer that question. You best need a industrial hub, i made a video last year unpacking mine. (got them from eyeboot.com)<link>

### Reply 15:
Thanks mate I was originally just testing them to make sure that they worked since they were used but I figured that it was the power consumption that was happening making it not work properly and after a little google searching I came to the same conclusi<rest of thread truncated>
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10681,"Date: 2017-11
Topic: Bitmain didn't deliver my paid for Antminer.
### Original post:
Hi everyone can anyone help me out here please..I just what to know did anyone else not get a machine off Bitmain that was paid for.My money got transfered but I got nothing.I ordered the AntminerS9 and paid full but the check out part of the Bitmain site said unpaid.Does anyone else have the same problem and have they gotten an refund?I'm emailing them but getting no reply and its bin months now.I just want a refund now because so much time has bin wasted already.

### Reply 1:
if its been months without reply then there is possibility of things gone wrong, I have known situations where a payment (that has had no tx fee) has failed to fill the order and the money is sitting with the paying company (normally bitpay) did you get a tx-id or an order number, I would start chasing bitpay aswell.bitmain will answer, I have had really serious probs with bitmain (more thank 10kusd missing) but it was resolved, if you have your receipt or some proof it will get sorted, they are busy.I am sure someone with more insight will chime in, but bitmain do not (or wont) respond here to individual cases.

### Reply 2:
I am not sure what kind of help people expect out of an internet forum when this is clearly an issue you need to take up with the manufacturer. Only bitmain can resolve your issue.

### Reply 3:
As much as I dislike Bitmain they have been fair so far with my orders. You should open up a support ticket and have a chat with them. I am sure they will work things out.

### Reply 4:
This happens periodically. Yesterday it happened again to me when I happened to place an order just after the BCH hash rate dropped and my order did not confirm in time. I opened a support ticket but they fixed the problem automatically even before answering the ticket. If you have paid the correct amount and the transaction confirmed you should be able to sort it out with them.

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1536,"Date: 2013-09
Topic: [GB] Cointerra Terraminer IV, 1.5 BTC=25GH/s Per Share 52/80 shares left
### Original post:
share price updated and new investors added

### Reply 1:
Soniq, don't like to add idle chit chat into the thread, but what does the countdown timer on your first post (in this thread) countdown to ?September 18th at 20:00 (Uk time) hmmm

### Reply 2:
its the time I have to get hardware paid for to qualify for first order delivery

### Reply 3:
Here's an Ebay (CC) option if you don't have/use bitcoins yet:<link> this one is similar :<link> is also a Cointerra machine. This is a separate deal, but same idea.Thoughts?

### Reply 4:
What happens in case you won't raise enough BTC to pay for the hardware before that time ?

### Reply 5:
I would ask existing members if they wanted to purchase the the second delivery shipment. If not I would refund BTC.Cheers

### Reply 6:
Payment sent. 1.5 btc for 1 shareTransaction ID: <truncated>

### Reply 7:
Added to OP and spreadsheetWelcome :-)

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17445,"Date: 2013-04
Topic: Low Reported Hashrate with LTC mining
### Original post:
I'm not 100% sure if this is the place to put a thread like this (pools section, or alt. currencies section), but either way I hope you fellas can help me out.I just recently switched over to LTC mining on my remaining GPU's because the BTC difficulty has been going no where but up. I've got a 5850 and a 5830 running. Together they report 550-600khash/sec, which I've seen to be in the ball park of where they should be at roughly stock clocks. I'm mining with cgminer 2.10.5, and the pool I'm using is notroll.in. So the mining end of the operation appears to be working flawlessly. However, when I check my account details and such at the pool's website, I have never seen a reported hashrate over 125khash/s. This issue was happening when I mined at litecoinpool.org as well. According to the calculator on their sites, I should be in the neighborhood of 15LTC/day. But I've been 3-4LTC/day instead, so the hashrate online isn't being reported wrong.I was wondering if anyone else had seen this, or if they had any ideas on how to fix this. Thanks in advance!

### Reply 1:
I am getting the same types of results when I switch from BTC mining with cgminer to LTC mining.On my test machine with 1 7950 cgminer shows 630KH/sec but coinotron, notroll, and kattare all show no higher than 80KH/s

### Reply 2:
Litecoin has a more complex hashing algorithm than bitcoin, so a lower hash rate is normal.

### Reply 3:
ok after some research thru the forumsI installed cgminer into a new folder and I running it seperate than my BTC one, not sure why but requires a tiny space soadded the 2 commands to the .bat fileCode:setx <truncated> 100setx <truncated> 1ran cgminer for a few minutes and got my thread concurrency from the .bin file namenow coinotron is reporting ~560KH/s much greater than 80KH/stweaking my gpu and memory speeds and now my rig is using 4gbs of system ram

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22537,"Date: 2018-04
Topic: Antminer S9 stops mining
### Original post:
Anyone else have issues where there's nothing wrong with the miner it just stops mining and you have to reboot? Because of this my payout keeps getting delayed another day.

### Reply 1:
I have one S9 that stops mining completely and hasnt mined for a couple of days now. I am going to try a new power supply. (I currently use HP1200w platinum power supplies, I am going to source a bitmain psu and give that a shot). It worked fine for 24 hours, now doesnt mine at all.

### Reply 2:
Thanks I might try that. I have an extra power supply. I'll try switching them and see if that helps. It's still running when it's not hashing which is why I didn't think about a new power supply.

### Reply 3:
Try a better ETH cable.A cat 7Not a cat 5.

### Reply 4:
Will cat 6 cut it or no? I am having the same problems as this person with only two machines out of 25. Could the cat6 be the culprit?

### Reply 5:
CAT6 is fine.

### Reply 6:
I have managed over 20k total miners in my career and they have all used CAT5 cabling. If switching to CAT7 solved your issue it was only because the CAT5 cable was damaged. There is no good reason to go buy a more expensive cable when CAT5 works just fine and no reason to tell others to spend money on something they dont really need.

### Reply 7:
Yep. Unless there is a lot of some kind of interference or very very long distance for the cabling, which both are quite rare cases,Cat 5 patch cables will do the job just fine.

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19006,"Date: 2014-03
Topic: GUIMiner -- some workers connect and accept, others don't -- HELP!
### Original post:
Using GUIMiner v2012-12-03 with slushpool's mining pool. I have three workers setup: CPU, GPU1 and GPU2. CPU connects and accepts blocks to work on, but neither GPU worker will. In the console, I see errors like: 2014-03-09 20:06:49: Listener for ""GPU2"": error: [Errno 10061] No connection could be made because the target machine actively refused it2014-03-09 20:06:50: Listener for ""GPU2"": Traceback <truncated> 09/03/2014 20:06:50, IO errors - 2, tolerance 2<snip>2014-03-09 20:13:15: Listener for ""GPU2"": <truncated> 09/03/2014 20:13:15, Setting new difficulty: 32014-03-09 20:13:18: Listener for ""GPU1"": <truncated> 09/03/2014 20:13:18, Verification failed, check hardware! (0:0:Turks, 381716bd)So, is this an issue with the pool's servers? or a driver problem on my GPU?Cheers, SP

### Reply 1:
This is 1 of 3 things causing a kernel error:1. Defective hardware - let's assume the hardware is good2. Driver problem - what driver and sdk are you using3. May need to do the following:Using GUIminer, locate poclbm.cl and simply replace#ifdef BFI_INT #define Ch(x, y, z) amd_bytealign(x, y, z)#else #define Ch(x, y, z) bitselect(z, y, x)#endifwith#define Ch(x, y, z) bitselect(z, y, x)

### Reply 2:
Thank you for your reply. This has been driving me nuts!The hardware works (its powering the displays on this computer right now, and I game with the same box regularly.)Driver package is <truncated> Version is 13.122D Driver Version is <truncated> Version is 9.14.10.01001OpenGL Version is 6.14.10.12618Here is my full poclbm.ini file... I did not find poclbm.cl, am hoping they're the same?Code:{ ""profiles"": [ { ""username"": <truncated> <truncated> """", ""name"": ""CPU"", ""hostname"": ""api2.bitcoin.cz"", ""external_path"": """", ""affinity_mask"": 3, ""flags"": """", ""autostart"": false, ""device"": 2, ""password"": ""redacted"", ""port"": ""8332"" }, { ""username"": <truncated> <truncated> """", ""name"": ""GPU1"", ""hostname"": ""api2.bitcoin.cz"", ""external_path"": """", ""affinity_mask"": 4, ""flags"": """", ""autostart"": false, ""device"": 0, ""password"": ""redacted"", ""port"": ""8332"" }, { ""username"": <truncated> <truncated> """", ""name"": ""GPU2"", ""hostname"": <truncated> ""external_path"": """", ""affinity_mask"": 8, ""flags"": """", ""autostart"": false, ""device"": 1, ""password"": ""redacted"", ""port"": ""8337"" } ], <truncated> ""C:\\Program Files <truncated> ""show_console"": false, ""show_summary"": true, <truncated> true, <truncated> 5000, ""start_minimize<rest of post truncated>

### Reply 3:
I gave the wrong file name for guiminer those lines of code that need replaced are in this file:phatk.clNOT poclbm.cl

### Reply 4:
Made the changes per your initial recommendation, with the updated file name, and here's what I see in the console now... Code:2014-03-10 22:59:32: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:32, IO errors - 1, tolerance 22014-03-10 22:59:37: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:37, timed out2014-03-10 22:59:38: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:38, IO errors - 2, tolerance 22014-03-10 22:59:43: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:43, timed out2014-03-10 22:59:44: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:44, IO errors - 3, tolerance 22014-03-10 22:59:44: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:44, No more backup servers left. Using primary and starting over.2014-03-10 22:59:49: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:49, timed out2014-03-10 22:59:50: Listener for ""GPU1"": <truncated> 10/03/2014 22:59:50, Setting new difficulty: 12014-03-10 22:59:50: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:50, IO errors - 1, tolerance 22014-03-10 22:59:55: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:55, timed out2014-03-10 22:59:56: Listener for ""GPU2"": <truncated> 10/03/2014 22:59:56, IO errors - 2, toleran<rest of post truncated>

### Reply 5:
Wait are you trying to mine at slush's pool or simplecoin? the log shows both? The default addy in guiminer for slush's pool is incorrect and I believe simplecoin is shut down?You should probably not be mining bitcoin with video cards anyways as it loses money...find an alt coin you want to mine and make sure the pool is setup correctly in guiminer.

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4658,"Date: 2013-04
Topic: Should I buy a Modminer Quad?
### Original post:
Should I invest in a Modminer Quad? I have never mined before, beside trying to setup miners on my gaming computer just to see how it works (but I stopped, since my PC is not powerful enough to mine (only getting 80 mhs))I have 8.5 BTC lying around from the times they were 10 dollars.Can you guys tell me if this is a good idea or a bad idea to do? Considering the new ASICs and the future of BTC?

### Reply 1:
Why don't you do a calculation first before you invest?

### Reply 2:
I did: But I wanted to hear from you fellas, you know more about this than I do.

### Reply 3:
This is the only thing i know more than you:

### Reply 4:
Meh, I just see now that the company is defunct and not making those anymore.

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6735,"Date: 2013-11
Topic: Who is the next in-stock ASIC miners or short term pre-order?
### Original post:
Now Bitmain Tech successfully released a steady built 180/GHS ASIC miner called AntMiner as in-stock sale via auctions rather than the common pre-order business model.I wander who would be next? Or who might release the miners with a short pre-order waiting period?3 months of wait is a bit risky investment.Anyone receive any notice from your pre-orders that the miners are about to ship?

### Reply 1:
Where can you participate in these auctions?

### Reply 2:
If the auction were to held again, it will be in this area<link>

### Reply 3:
Really? Another thread from an obvious ""paid"" mouthpiece for this operation? I don't see any ""in-stock"" hardware from this ANT hw? Can you link me to a website/shop/cart that I can pay for hardware right now? Pre-ordering being the worst... Auctioning isn't that much better given the amount of clowns willing to throw money at it.. however, if the greed is hot and the gettin is good.. have at it.

### Reply 4:
The Wasp Project Collective will help with this and probably in December / January you will start seeing a fair number of in stock / short term pre-order units that we have designed. If there are Antminer chips in the wild we will have a Antminer Wasp out to the market.

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17112,"Date: 2012-04
Topic: Crash when underclocking memory
### Original post:
Hi,I have two Asus 5850 DirectCU's. Using Afterburner and CCC 12.1.AB can change core clock and memory only in GPU1. I can not do anything to GPU2.With Trixx I can change the memory and core clock on both cards. System crashes after 2minutes of mining. Without any OC'ing it is stable but MHash/W is so crappy I don't want to run it like that. Any solutions? Tried CrossFire too but same problem.1000W PSUGA 990GXA-UD3GUI MinerOne of the 5850s has to be the problem. That same computer can run two 5870s without any problems.

### Reply 1:
Don't have 5850's myself but at the least, you'll have to give us what core and memory clocks and voltage settings you're trying to use before anyone can give you more help.

### Reply 2:
Oh yes, forgot that.725/250, 725/300 with a range of different voltages from 1050mV to 1165mV.

### Reply 3:
725/280 seems to be working in GPU2 and GPU1 runs smoothly with whatever I put there. Well, I consider this solved.

### Reply 4:
I've seen some particularly bad core-memory clock combinations result in hardware errors and/or instability on a few of my cards.Try some other memory clocks, doesn't have to be very far from you current setup, say 725/280 or 725/340.

### Reply 5:
I have one 5870 that crashes instantly (when mining) if I try to set the memory below 250 or so. My other two handle it fine (they run at 975/215). Never figured it out.Though the two at 975/215 require 1.12v to be 100% stable.... the one that I can't clock below 250 runs stable at 1000/300 at 1.04v... truly epic

### Reply 6:
I have 25 5850s ... best card out there.Anyways. anything under 300 is gonna be hard for a 5850 on windows with AB. Stop using all that other crap and just use AB. Trixx sucks ass and CCC is stupid too.1149 voltage, 950 core and 300 ram will get you a good 400 mhash.If your PSU cannot handle that ... try 1112 voltage, 900 core and 300 ram. If you STILL have trouble ... just do 1087 voltage, 820 core and 300 ram.

### Reply 7:
You must have a 7970 (or similar). Cant get ASIC quality of older GPUs (6xxx or lower).To the OP, Sapphire Trixx 4.3.0 is out now, which now supports undervolting in addition to overvolting, as well as 7xxx over/underclocking. I don't see any reason to use afterburner anymore. Also there are ""bad"" memory frequencies where the timings to a certain frequency are too stressful to cause it not to work until it gets past a certain point them jumps to a different set of more stable timings. Try different increments of 5 mhz memory until you find one that works for you. For me, I found 220Mhz+ and 370MHz+ to be breaking points for both of my 5870's.

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    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1000W PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GA 990GXA-UD3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GUI Miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""7970"",
    ""hardware_is_owned"": false
  }
]"
20256,"Date: 2015-02
Topic: Convert TL-WR703N back to standard openwrt?
### Original post:
I have a number of units which were used for mining and now I want to convert them back to openwrt. Units are identical to new, nothing unusual hardware wize.TP-Link TL-WR703Nhardware version 1.6 (even confirmed on the Ethernet port sticker, 1.6)However, everything I have tried from making my own build using the latest image builder to try both factory and sysupgrade failed, to using openwrt factory and even using original tp-link software. Each time, the upgrade bricks the device.More info in /etcin a file called <truncated> <truncated> aadd747+luci: 346e3e7+Wondering if anyone might have some insight. Thanks.

### Reply 1:
(1)Download firmware image:<link> Firmware(3)Flash new firmware image -->Browse->Select image ->Flash image...(4)Default IP:<link>

### Reply 2:
Are you sure the device is bricked, or can you still communicate via TFTP? If you have the right firmware for the device, I could only guess the issue would be from not waiting long enough for the firmware to flash before hard-booting it (I screw this part up A LOT: I'm impatient). Hard to say without being in front of it, though.

### Reply 3:
It no longer boots. One LED blink and nothing else. It doesn't look for a dhcp address nor does it set one once it goes into this mode.I figure at this point, it's bricked. I'm saving all the bricked units and will try to serial recover them in the future.

### Reply 4:
Does anyone know what the <truncated> does to the device that it cannot be returned back to a standard factory openwrt build?

### Reply 5:
How about this... does anyone know the steps needed to convert the device to a u-boot version so that I can then restore a standard openwrt image back on these devices.

### Reply 6:
Here is my post on openwrt with LOTS of extra info

","[
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    ""hardware_name"": ""TP-Link TL-WR703N"",
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]"
11031,"Date: 2021-11
Topic: Are the T17e and S17e good ASIC for mining
### Original post:
Hi, I am new to Bitcoin mining. Someone offered to sell me some Antminer T17e's and S17e's for a good price. I have read that the 17 series have a lot of quality problems. I am familiar with PC repair and can give a go at fixing and running these machines. Can anyone advise whether these specific models (T17e, S17e) have the same problems and whether they are worth buying?

### Reply 1:
Hi,1) Good electricity price2) Asics are very loud3) Asics are making heat4) Asics need non dusty space5) Asics need good air coinditioning space or good air fluctuation6) Be lucky because this higher hashrate antminers are very bad quality (my friend bought 100 of them brand new directly from bitmain and 25% of them didn't even mine, but started and no claim, only sending back on his costs and then repair on his costs...)Maybe calculate it more times and also consider bitcoin still going up by tens of percent a year and maybe you will find out it is better to invest money directly rather than mining for maybe 2 years and have less Bitcoin then if you would buy in the very beginning.I hope I gave you some other/new opinion you came here for

### Reply 2:
BM 17 series: Expect about 25% failure ...But being 2nd hand, expect worse.

### Reply 3:
Thanks for the advice. Are all the 17 series models equally bad? I have read some comments that the S17 pro has better build quality and is a reliable machine. I would really appreciate your opinion on whether that's true. Many thanks.

### Reply 4:
Watch out for the S17 seriesI only have 3 S17 Pros, purchased new direct from Bitmain. The went strong for a year and then started having board after board die. They have 3 hashboards each. 7 of the 9 boards have failed and one power supply. In sending out for repair (not easy to find or quick), 2 were determined unrepairable. If you look on ebay, you will find quite a few non working or partially working units.My opinion, stay away from S17 series.Makes me worry about the S19, but just bought one a month ago. Whatsminers seem to have a pretty solid rep. I have one M20 I purchased from Whatsminer.net (not .com), that's been a trouble free workhorse for over a couple years now.

### Reply 5:
pretty not recommend,very bad quality,even 30% failure

","[
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    ""hardware_name"": ""Antminer S17e"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S17 Pro"",
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  },
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    ""hardware_name"": ""Antminer S19"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Whatsminer M20"",
    ""hardware_is_owned"": true
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]"
23657,"Date: 2021-08
Topic: T17e - problem with ""red"" frequencies
### Original post:
Hello,i have one hash board which have a bad frequencies. Log is without failure.Used firmware HiveOS .Here is explanation:When is a hash board in Chain 0, problem is with line 4. When i insert board to Chain 1, problem is with line number 3.I dont understand. :/ is it mystery for me. What sets up the frequencies for lines/Asics ? What do these lines have in common? I changed 2x 0,8Volts and 1,8V regulators for line 4, next i changed first and last asic chip in the line, but same issue, after 5 minutes are Asics in line red.Check picture<link> you for help.M.

","[
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    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""firmware HiveOS"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""0,8Volts regulator"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1,8V regulator"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic chip"",
    ""hardware_is_owned"": true
  }
]"
10417,"Date: 2017-08
Topic: safe to plug S9 to a orange standard extension cord in a home?
### Original post:
Hi guys,general question: is it ok if i plugged a S9 Antminer to a extension Cord? It appears to be a somewhat heavy duty indoor/outdoors orange extension cord with 3 plugs. Is that safe?I dont see any specs tag on the orange cord, and i couldn't find anything online if the S9 can be plugged to that (in an apartment)What's the worse that can happen, it trips the Breaker?thanks

### Reply 1:
Only if it's rated for the current. Make sure it's AWG14 or AWG12.

### Reply 2:
Do you have any receipt or model number that you could give us? It could help in identifying wire gauge and such. It could possibly work depending on the maximum current that can be safely delivered through the cord. If you're feeling adventurous go for it, I wouldn't risk it though.

### Reply 3:
on the plug i have:HiWoods (R)E18427S8P-205I googled it before my posts but couldn't find anything.thanks guys

### Reply 4:
The wire could get hot and melt the plug. Worse it could melt the cable .Orange is sometimes 16 gauge and would not be safe.How long is the run?25 feet or less I would use 14 gauge25 to 50 I would use 12 gaugeI would never do a run over 50 feet

### Reply 5:
25 feet

### Reply 6:
You have to be cautious on using power extension at home, it may lead to disastrous result.Since S9 has Power Consumption: 1375W + 7% based from the specs.You will be needing power extension that rated to handle 1400 or greater wattage.source from: <link> Cord Wire Gauges, Amperage Rating, and WattageWire GaugeAmperage RatingWattage RatingPower Tool Used#185 Amps600 WattsDetail Sander, Drill, Jig Saw#167 Amps840 WattsBelt Sander, Reciprocating Saw#1412 Amps1,440 WattsCircular Saw, Miter Saw, Router#1216 Amps1,920 WattsTable Saw, Radial Arm SawAWG #14 would be a good choice.

### Reply 7:
Thanks everyone! I've decided it would be prudent to buy another extension cord that i know is AWG #14 based on feedback from here.

### Reply 8:
AWG 14 is NOT going to be safe to operate a device 24/7 at so close to it's RATED capacity - that capacity is an INTERMITTANT capacity rating, like any other electrical wiring you need to derate it at least 20% for continuous usage.AWG 12 or don't do it - and IMO it's not a good idea to run ANY high power miner on an extension cord.Also, the COLOR of a cord means nothing - orange is common in cords intended for outdoor usage but the actual capacity of orange cords varies a LOT.

### Reply 9:
If you are getting a 25 foot cord.I have a link12 gauge 25 feet under 18 dollars<link>

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    ""hardware_name"": ""extension Cord"",
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  {
    ""hardware_name"": ""HiWoods (R)E18427S8P-205"",
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    ""hardware_name"": ""AWG14"",
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    ""hardware_name"": ""AWG12"",
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    ""hardware_is_owned"": true
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    ""hardware_name"": ""12 gauge 25 feet cord"",
    ""hardware_is_owned"": false
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]"
18675,"Date: 2014-02
Topic: Putty
### Original post:
Guys, let me ask you please....is any way mine on Putty, when is computer OFF? Putty must always be working on my PC, or I can somehow make Putty stay ON, even if is my PC not working.... on Ubuntu please

### Reply 1:
You want to use something like screen, read up on the docs (basic guide here <link> It allows you to 'resume' an ssh session and let you run scripts in the background. (Sorry for the vague answer, stuck at work on my phone)

### Reply 2:
I use Screen on my Raspberry Pi, it does just what you need. Install Screen, then type 'screen' to get to the prompt. Next start your miner, you can now disconnect putty and when you re-connect run 'screen -r -d' to get back to the screen.You can also start off more 'screens' by pressing 'Ctrl-A' and then 'C'. Switch between them using 'Ctrl-A' and then 'N'.

### Reply 3:
If your miner starts automatically ignore the next line...start the miner, ok you can see it working, close putty.Then next time you log in through putty type ""screen -r"" to see what's already running.

### Reply 4:
I have a raspberry pi and for me it works with this:pi@new-host ~/$ sudo -ipi@new-host ~/# cd <truncated> ~pi/cgminer/ # nohup ./cgminer -- ....

### Reply 5:
Thanks for the info, buddy

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    ""hardware_name"": ""Raspberry Pi"",
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]"
18470,"Date: 2014-01
Topic: issues with 2.6 Gh/s Bitfury USB
### Original post:
i have a Blue Bitfury USB miner using the BF1 driver. it is constantly dropping out and i have to remove it from the device panel and completely reinstall it. this is happening every day now. is anyone else having this issue or has anyone heard of a rememdy short of binning it???the os is windows 7 with BFGminer. i have also tried with CGminer with the same result.

### Reply 1:
sounds like its drawing to much power and the usb ports are cutting off. try a good usb hub.

### Reply 2:
thanks for the reply. i have swapped it to a new Anker hub. its by itself at the moment and still OOC. i tried to set it up on a different computer alone but the same thing happens. i guess i got half of the worth out of it before it crapped itself. pitty, i wanted more.

### Reply 3:
2.6 sounds pretty fast, has it been overclocked? If so you could try turning the clock down a bit.One way of increasing the clock speed on these is to rub a pencil on the side of one of the resistors so maybe rub some off?I dont know what its called but I saw a video on Youtube of some guy doing it if you want to know which resistor.

### Reply 4:
good point id try rubbing it all off and leave it a default setting to see if its just to overclocked. might also need a fan pointing on it as it might be over heating. if your in the UK or EU id be tempted to buy it off you

### Reply 5:
i watched that video on youtube also. as i was cleaning it i realized that there are 2 buttons on this card. one is right next to that particular resistor for overclocking. im wondering if i inadvertently pushed it. that button says ""PRG"" and the button on the opposite side say ""RST"". i will need to read up about programing or reprogramming this card. i have some more reading to do there is a picture on the forums of one of the cards. you will see the buttons at the bottom.<link>

### Reply 6:
seems to be working now. it dropped out once so far today but came right back on when BFGminer changed pools. maybe it had some lint or something conductive near that resistor causing it to over-run.

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    ""hardware_name"": ""Blue Bitfury USB miner"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""BF1 driver"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""device panel"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""windows 7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFGminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Anker hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": false
  }
]"
4693,"Date: 2013-04
Topic: ASIC Owners (or anyone with lots of FPGA): Cashing out BTC
### Original post:
This question is to the owners of ASIC setups, or anyone with a large hashrate. How do you plan to withdraw your money into your bank accounts without it being seen by the big boys, government? This has been a questions I have been wondering for some time. Theoretically speaking, if I had 2 Avalon units hashing at 66,000 each I would be pulling in on average 7.7 coins at the current difficulty, $1,900 a day. If I were to wait a week and want to transfer the funds to my account I would be looking at upwards of $9,500. If I were to deposit this every week into my account I am sure someone would notice something and start to ask questions. I know I could purchase items with BTC, but this is more a questions about cashing out and making sure it goes unnoticed.I cannot be the only one thinking about this.

### Reply 1:
If you want to cash out from the bitcoin economy silently, you buy items with bitcoin.Such as gold.

### Reply 2:
Luckily, I do not have the problem because I don't have an Avalon. I prefer to worry about it after I get my Avalon. It's no need to worry about thing which is not exist.

### Reply 3:
there is a fantastic number of buyers who would love to meet you. probably a few minutes on localbitcoins will help you find them. they might not share their buy interest at spot but if you contact a few buyers with large amounts showing you'll probably find some who will pay right near spot to get access to larger sized trades. if you need to, sell a little below spot -- that'll attract buyers like ants to honey.also the #bitcoin-otc marketplace is a good place to advertise your supply, especially with its web of trust (wot).

### Reply 4:
One sure-fire way not to go unnoticed is to ask a question like that in a public forum with a username that is extremely easy to link to real life information such as name and adress.

### Reply 5:
You might also check this dude<link>

### Reply 6:
I'd rather not go that route if I understand what you're getting to. As far as I know, I'll have to pay taxes on a Bitcoin income. I haven't looked into this much yet, but I keep track of every transaction. My concern is making sure I'm not inviting trouble for myself from incorrect filings. I found out about the FBAR law last year, after becoming a signing authority for my mother who lives in another country. I've had enough headaches with that.

### Reply 7:
You can transfer up to $10,000 per month via bank wire anonymously at MtGox.

### Reply 8:
lol...this is true, but unfortunately I have nothing to worry about. Come to my house, I have a few 7970 video cards and thats it, nothing worth trying to take from me

### Reply 9:
This site = <link> you to trade BTC for cash in the mail.

### Reply 10:
That tor2web site looks so shady... Has anyone actually done work with them yet?

### Reply 11:
Sell your bitcoins cheaper, I'll buy it from you.Oh, your problem was how to NOT get noticed... don't deposit it into any bank. Store it in your vault at home. Or under the mattress. But sell the coins to me first, so I can give you unmarked cold cash.

### Reply 12:
Tor2Web just shows the content of the onion site. Which means it's the onion site that looks sketchy, but it seems to me to be pretty close to bitcoin-OTC or whatever it's called. The only difference is the onion site offers a built in escrow feature. Personally, if I were workin on getting cash out, I wouldn't be against doin a couple hundred dollars. As long as it worked, I'd put a couple hundred back in. You obviously couldn't get all your BTC cashed out in this manner, but it'd offer a chunk as long as it still worked.

### Reply 13:
There is a name for someone who makes a boatload of money and doesn't pay their taxes: An idiot.Seriously you're making a fortune! congrats! be happy! ... so you have to pay a bunch of taxes? Who cares! you're making a triple bunch. Pay your taxes like a man, and avoid the risk of severe consequences down the road that shit all over your life.

### Reply 14:
I remember an inspirational speaker who said once: (or a few times)Speaker: You have to feed the goose.Audience: But the goose is too fat.Speaker: Better a fat goose, than no goose at all.You pay taxes so the government can do the things through it's agents that you are not willing to do, such as render military service to keep the rest of the country safe. You can just go make money.Of course, if you are making a boat load of money, you better take steps to secure yourself as well, (bodyguards, weapons, food, etc.)When you're rich enough, you can buy your own country (or as the speaker likes to say, get your own planet and you can rearrange the seasons as you want). But until then, you live by the rules of where you are.

### Reply 15:
I just cashed out all my bitcoins. I live in the United States and I'm going to pay taxes on them. This is way easier than trying to hide the income. I'v<rest of thread truncated>
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    ""hardware_name"": ""Avalon units"",
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    ""hardware_name"": ""7970 video cards"",
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]"
1671,"Date: 2013-09
Topic: [EU/UK GROUP BUY] RedFury USB miner 2.2 - 2.7 GH/s
### Original post:
I was hoping you would be running a group buy .Still think you need to be an official distributor for something, perfect service with 0 issue. DOO EET!

### Reply 1:
pieh0 i swear you take all my money that I give to Outcast3k on bit bargain

### Reply 2:
I'll certainly take one initially, just to see how it works. I'll pay later, when we're closer to the end of the GB.

### Reply 3:
Excellent!!2x please will pm you later

### Reply 4:
10 on reservation please, if thats ok.Once we're close to the 250 mark, i can settle with you .

### Reply 5:
I will take 2 units, maybe a couple more. but 2 for sure.

### Reply 6:
I was hoping you would run a group buy for these, but I think they are too expensive. I'll think about it. Do they still think delivery time from Indonesia is about 10 days?

### Reply 7:
At 0.87, they are cheaper than 7.5 asicminers, which would come to BTC1.275.Making an ROI is a question that's always going to be an issue with current tech, until you can pull 10gh/s out of a chip.

### Reply 8:
I agree, really they are a 'fun' item. I'm a bit short of funds at the moment, which tends to colour things. Perhaps I can shift something on eBay before I join in.Who gets to keep the BPMC memory stick? OutCast3K I guess.

### Reply 9:
What is the deadline on this group buy?Is it linked to the Red Fury 9pm 20th Sept deadline?

### Reply 10:
I believe they're shipping around the start of October, so around then.Its not linked to that deadline. no.

### Reply 11:
Fantastic, I will be able to order a few more then. Please put me down for 5

### Reply 12:
5 for me too

### Reply 13:
I'm more interested in the novelty factor, rather than ROI. I like tinkering with these things.

### Reply 14:
Greetings, OutCast3k.I want to buy 2 RedFury USB Gizmos.

### Reply 15:
I can verify that we are working with OutCast3k as a distributor of our products

### Reply 16:
Good to hear.

### Reply 17:
Do it, he's been perfect with every group buy i've been in and has lightning fast shipping when he gets the stuff to send.Time to promote this guy from GB organiser to Distributor.Plus it would be nice to have a supplier of something bitcoin related in the UK, rather than ordering from the other side of the world .

### Reply 18:
CoolCan i mix them in the USB hub with my BES's?Does CGMINER just pick them up?And as above, Outcast3k is a gent and you will have no trust issues here.(And I trust no-one these days.....)

### Reply 19:
We are working on cgminer support right now. Should be compatiable in the next week or so. Ckolivas has recieved one of our units to test with. Also Luke is working on bfgminer and DrHaribo will start working on bitminter soon.

### Reply 20:
Fantastic news!

### Reply 21:
Can i reserve 3 please

### Reply 22:
Good Luck OutCast, you really deserve to be a distributer in the UK

### Reply 23:
Reserve me 10 for now please

### Reply 24:
Thanks for all the kind words everyone Will add those that requested to be reserved to the list.

### Reply 25:
I will look at reserving 5 please

### Reply 26:
watching

### Reply 27:
Please reserve 3 for me. Thanks

### Reply 28:
from where they will be shippedI can let them pick

### Reply 29:
outcastis there a cut off date for paymentthanks

### Reply 30:
Probably around the 27th-28th of this month to make sure we're ready for the shipment that is expected for early October.

### Reply 31:
cheers

### Reply 32:
watching!

### Reply 33:
Please reserve one for me. Thanks

### Reply 34:
Is possible shipping to Spain?How much would the shipping 4 units?Thanks!

### Reply 35:
(4 * 0.85) + 0.55 = 3.95 btc

### Reply 36:
Ok!! Sorry... I had not read well.Thanks

### Reply 37:
hello, shipping outside UK is too expensive, dont you have cheaper solution

### Reply 38:
could I reserve one for now please

### Reply 39:
Please, from where they will be shipped?Thanks

### Reply 40:
Ok, UK... jejejeI will aim to ship the miners on the day I receive them, as long as the delivery is before 3:30 PM.Collection is also fine (I'm in the UK, near the Dartford Tunnel)

### Reply 41:
I've added a few other options.

### Reply 42:
HiCan you reserve 2 for me?

### Reply 43:
just a quick question, are these already batch produced and ready for delivery say next week/within a month or are these preorders of when they are mass manufactured? theirs a bit of a difference, would be great to knowTHanks!

### Reply 44:
I believe Beastlymac will have stock that will be ready for shipping very early in October. I'll update the original post to make it clearer.

### Reply 45:
count me in for a few then will send payment shortly

### Reply 46:
Hello OutCast3k,Could I reserve 5 USB miner RedFury for me, please?Thank you very much!

### Reply 47:
Skalman usbs 3 paidHere's to Outcast, thank you for the superfast replies man !Cant wait to get my hands on these baby's

### Reply 48:
Hi OutCast3k,I want reserve 2 more, p<rest of thread truncated>
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    ""hardware_name"": ""BPMC memory stick"",
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    ""hardware_name"": ""cgminer"",
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    ""hardware_name"": ""bfgminer"",
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  },
  {
    ""hardware_name"": ""bitminter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB miner RedFury"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Skalman usbs"",
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]"
2220,"Date: 2013-11
Topic: BFL Chip Credits - Buy, Sell, or Trade Here
### Original post:
no thanks

### Reply 1:
""no thanks"" to selling chips? ""no thanks"" to buying chips? ""no thanks"" to what?Why make a post?

### Reply 2:
Sorry, but what do you mean by this? That you will pay $3 (paid in BTC at market xRate) for credits now? But you will pay more tomorrow...?

### Reply 3:
""That you will pay $3 (paid in BTC at market xRate) for credits now? "" YES""But you will pay more tomorrow...?"" YESThere are some that want to liquidate ASAP. Might as well get a good deal.If no one bites or if people stop taking my offer then tomorrow (or next weak) I'll changemy offer to $4.00. I'll inch up over the next several weeks to $15.00.

### Reply 4:
He is planning to buy the currently available chips coupons in the hopes that someone else will pay him MORE to get the BFL chips sooner than 100 days.If anything, sellers should make him pay through the nose, or just resell it themselves at a profit.

### Reply 5:
Seeing that somebody offered and got 500 at 3 on the buy thread, you might get a bunch of 'em. Good hunting.

### Reply 6:
64 credits here<link>

### Reply 7:
16 Credits up for auction here.<link> price is above my starting offer price so I won't Byte.

### Reply 8:
HiHave 772 chip credits that i want to sell. With escrow.PM offer.<link>

### Reply 9:
We need some kind of exchange with escrow The market will be huge given how many BFL orders there are!

### Reply 10:
One can automatically transfer his credits to an e-mail through BFL site. It's official and instant, so you only need an escrow to hold coins for a minute.

### Reply 11:
Lowered starting price at 0.01BTC

### Reply 12:
I have 16 credits for sale with escrow for your protection<link>

### Reply 13:
I have 32 credits for sale at 6.4btc (0.2btc ea, approx $20 ea). PM me.

### Reply 14:
I have 32 of the chip credit codes I'll sell for 50% which is $12.50 each. That would be an $800 discount on a chip order for $400. If anyone is interested just send me a message.

### Reply 15:
I have 32 credits for sale at 6.4btc (0.2btc ea, approx $20 ea). PM me.

### Reply 16:
(xpost from bfl forum)I`ve got 6 Tulip Bulbs am willing to part with for 3 btc each,oh wait a minute,there just credits for 1 third of a tulip bulb,anyway i`ll Email them once i receive payment.No Escrow.

### Reply 17:
My 64 chip credits also for sale, PM me, sold in 4 groups of 16, you can buy 1-4 groups, you can pay in cash or BTC, $15x64=$960, if you want escrow that is at your expense since I am a know person and not going to cheat anyone.Proof: <link> looking to buy BFL chips would need some margin to be bothered with chip credits and I think $10 margin on $25 credit is a good balance.

### Reply 18:
NO thanks to BFLLooks like people trust so much in BFL chips, that everybody is selling their credits.

### Reply 19:
New price 6BTC for 32 credits

### Reply 20:
I have 10BTC for a minimum of 100 chip credits.PM me if you have have the credits and will trade for 10BTC.Thanks,QG

### Reply 21:
128 chips credit for sale, 10 BTC.

### Reply 22:
3 x 16 credits for sale, price is $200 for 16 credits.Escrow welcome, however I'm not sure of a way to do escrow on this forum, so I'd appreciate if you offer a way.You can also buy on bitmit: <link>

### Reply 23:
12 credits for sale. will sell super cheapWill take BTC / LTC / or NMC

### Reply 24:
pm sent

### Reply 25:
I can provide escrow for these if you'd like

### Reply 26:
I have 16 BFL chip voucher/credits. price is 2BTC for 16.

### Reply 27:
Selling to whom?

### Reply 28:
WTS 16 chip credit, 250$ (btc-e redeem code) or bitcoin of btc-e price (at now - 2.5btc).

### Reply 29:
So has anybody decided to scrape the site yet with all these chip codes for sale. One could conceivably figure out a better tally on what was ordered from BFL even from those who were not forthcoming in the pre-order thread.Just curious.

### Reply 30:
I have 48 credits that I will sell for 5 BTC. Escrow payments welcome.Contact me at my username at gmail.com

### Reply 31:
will this speed up BFL's delivery time? what's the point?

### Reply 32:
ahem.. prices have collapsed to under $3 per chip... good luck with your asking price

### Reply 33:
4 credits for sale , 0.4 btc.

### Reply 34:
More so a thought experiment than anything else but it could start to give a better idea of BFL hashrate that may come online in the next few months.

### Reply 35:
I have 464 chip credits for sale, PM me if you are interested in buying some/all. Thanks!

### Reply 36:
<link> it Now on Bitmit for:<link> listed is dynamic with gox price in usd.

### Reply 37:
That was fast.

### Reply 38:
124 Chip codes for sale. $10 each obo

### Reply 39:
He's looking to buy a bunch so they conveniently dropped in value very fast for him

### Reply 40:
<link> it Now on Bitmit for:<link> listed is dynamic with gox price in usd.

### Reply 41:
i love the price drop , but the reality is, it's due to too many people dum<rest of thread truncated>
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    ""hardware_name"": ""BFL Chip Credits"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Tulip Bulbs"",
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10404,"Date: 2017-08
Topic: Brand New S9, only 2 of 3 hashboards have a red light
### Original post:
I'm also hashing at 2/3rds the expected rate. I imagine I'm looking at a dead board. This something I can fix/debug?Bitmain warranties this kind of stuff?Thanks!Alex

### Reply 1:
I would recommend if you haven't done so already to take a look at Bitmain support page. You can check warranty status and they have a basic troubleshooting guide to figure out your problem.<link> Luck!

### Reply 2:
Don't do any repairs without their permission.....you WILL void your warranty

### Reply 3:
To follow up are you in the USA?They now have a USA repair spot in Los Angeles .

### Reply 4:
Hey!Here's how it unfolded:- I'm in Canada, and Bitmain insisted I ship the whole unit back to them for warranty repairs. They acknowledged the US repair shop, but said it just had to go to them for warranty. Canada was considered international (rough).- It costs $260 to ship to Hong Kong (ouch), and if it's anything like the original purchase, I'd be paying another $260 when it gets back. They told me I could ship it to Bitmainwarranty.com in Denver, CO -- but on my own dime; the repair wouldn't be done under warranty.When I called bitmainwarranty - they were extremely nice. They kinda laughed at the 'ship the whole unit' statement; and invited me to simply send the burnt board. It cost me $25 to ship, and he suspects he can fix it for next to nothing.Shipping the board leaves me with ~9thps, so I went that route. I'll update when I get more details on the board and its repair. If it costs less than 500 or so to fix, I'm coming out ahead IMO.

### Reply 5:
I've used BITMAIN Warranty twice, both times I had an EXCELLENT experience. Most recently a board died on a B4 S9 I have. They were able to fix it for $175 plus shipping. cha ching!

","[
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    ""hardware_name"": ""S9"",
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  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""B4 S9"",
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]"
20165,"Date: 2015-01
Topic: Thinking of going Solo... Any Suggestions?  Found 2 Blocks  Pools Netted Us Less
### Original post:
Currently in the process of finishing up with the setup of our new Bitmain S5 Units. We'll be at roughly 50 T/Hash when all is said and done. I've been mining to basically Slush, and in the last 3 weeks have already found 2 blocks - with less T/Hash than what I have now. I already operate a full node - and all of our miners connect to the pool (whichever) through a local Stratum Proxy Server we set up so we could easily direct the hashpower with just 1 change. So that said - any thoughts? I realize luck has a lot to do with it, but we've found 2 blocks in 3 weeks - and have no where near netted 50 BTC on Slush. Would appreciate any candid advice - perhaps from those who are solo mining. Lastly, my fear is I set it up wrong, and while waiting 2,3,4,5 weeks for a block - I then come to realize we had it set up wrong and am not mining at all Strato

### Reply 1:
I have started on this same endeavour. we tested our setup with a test block chain and pointed machines at it until we solved a block to be sure all was working properly before turning it over to BTC this might be a good test run for you to try before you go all in soo mining. Also maybe split your hash power 50/50 half power to slush and half solo so you dont miss out just incase

### Reply 2:
You could mine on my solo pool which takes away the guesswork about whether it's working or not, and takes care of the responsibility of the high speed nodes, bandwidth and scalability you need to ensure to avoid orphans:<link>

### Reply 3:
Yes i agree with the above, test it on another coin and see how it does, try one that is close to BTC in difficulty yet fast enough so your test can complete and you can move on to BTC. Good luck with your business, I wish you the best and hope you have good luck.

","[
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    ""hardware_name"": ""Bitmain S5 Units"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Stratum Proxy Server"",
    ""hardware_is_owned"": true
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]"
6359,"Date: 2013-09
Topic: Block Erupter Blade (New Model) User Guide
### Original post:
link is broken...

### Reply 1:
It just links to a proxy website.<link>

### Reply 2:
Thread is pointless, these sheets of paper aren't even included in the packages. I still get 20 pms a day asking for help. Don't bother posting it here, post it in the actual help thread where people will actually help.<link>

### Reply 3:
Fixed Picture Link

### Reply 4:
<link> IMGUR link

### Reply 5:
Can a mod fix the link in his post?

### Reply 6:
Notes: 1. If you couldn't access to 192.168.1.254:8000, please try doing a hardware reset by short-cutting the two pins closest to the ethernet socket and try again.2. Please take additional care to polarity.

### Reply 7:
Done, cheers.

### Reply 8:
Hi guys,I received my two new blade, but:- the first one never switched on- the second worked fine for one day and now it's dead.any suggestions?

### Reply 9:
If you need help, dogie started a great support thread for Blades here...<link> I'll guess here that you fudged your connectors somehow. I'm pretty clueless when it comes to anything but plug&play but I've managed to get 8 Blades up and running. 3 gave me some minor problems and 2 of those were because if my crappily-crafted power connectors. The other one needed a hardware reset.

","[
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    ""hardware_name"": ""Block Erupter Blade"",
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  {
    ""hardware_name"": ""hardware reset pins"",
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  },
  {
    ""hardware_name"": ""Blade"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power connectors"",
    ""hardware_is_owned"": true
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]"
4905,"Date: 2013-05
Topic: [Ann]Purchase ASIC chips now: 4077 available.
### Original post:
This is what I'm interested in. Let me know what your price ends up at!

### Reply 1:
@steamboat: may I ask what's your country? perhaps I overread it.I'm very interested in your ready-to-run miner and about to preorder chipsand straight looking forward to any numbers about approx. lead time afterchip arrival or end pricing.

### Reply 2:
I am located in Florida, USA. Miner assembly will take place in the US to reduce turn-around time. Initial numbers for fab assembly of a full batch are ~10 days for a full batch. Please note: Shipping from the manufacturer to me, and from me to the end user will add to the timeline. Do not use these numbers as a final date for delivery.

### Reply 3:
Sounds quite good! Thank you.

","[
  {
    ""hardware_name"": ""ASIC chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ready-to-run miner"",
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  }
]"
8538,"Date: 2014-11
Topic: Sending KNc Neptune for RMA in Gridseed box for LULZ
### Original post:
So gridseed deliveed 100% working new technology of dual mining LTC/BTC since start.KNC got super delayed and got my 3 nonworking cubes on sha256 technology that exists since a year or two.So since Gridseeds work and KNC doesnt, i took this 3 cubes and put in gridseed box to give them a sign and shipped.No idea how to paste instagram here so here is the original link: <link>

","[
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    ""hardware_name"": ""Gridseed"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""KNC Neptune"",
    ""hardware_is_owned"": true
  }
]"
10698,"Date: 2017-12
Topic: DragonMint 16TH/S halongmining.com SCAM SCAM SCAM SCAM
### Original post:
I didn't think he would respond. This is 100% certain a SCAM.I feel sorry for all those who sent their hard earned money to a SCAM operation.

","[
  {
    ""hardware_name"": ""DragonMint 16TH/S"",
    ""hardware_is_owned"": false
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]"
3927,"Date: 2016-06
Topic: (Belated followup) R17x: Black Arrow Prospero X-3 buy
### Original post:
I participated in the ill-fated R17x: Black Arrow Prospero X-3 buy from 2014, but was told on the forum (June 15, 2014 in particular - <link> ) that refunds didn't seem to be happening. Recently noticed that Bob and Thomas later requested PMs to process btc refunds, and that quite a few were honored. I sent a message to each, but never heard back and they no longer seem to be active in this community.Just wanted to check if anyone has information on where Bob / Thomas / Minersource might now be reached.Also, because screaming into the void is so satisfying, here's my formal refund request:Forum Name: TronPaul# of Shares: 15Order Number: 1118Original TXID [to prove ownership]: <link> # of BTC paid: 2.71169341Address to refund too: <truncated>

","[
  {
    ""hardware_name"": ""Black Arrow Prospero X-3"",
    ""hardware_is_owned"": true
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]"
21031,"Date: 2016-05
Topic: Antminer 2 on Mac. Slight problem
### Original post:
I'm running an Antminer 2 on my Mac, and although it's working, it's giving me few errors in the log file.Code: [2016-05-12 15:39:44] Testing pool <link>[2016-05-12 15:39:44] Stratum connect failed to pool 1: Failed connect to localhost:8332; Connection refusedCan anyone help with this? What's happening and how can I ""fix"" it ?thanks

### Reply 1:
too little info. what is an antminer 2? the little usb stick? that is a u2Assuming it is that a usb stick you need more then 1 line of info did it ever connect and hash?if it is hashing for 1 hour and you are on a mac screen shot it and post it for us.I would like to see a lot of lines of stats

","[
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    ""hardware_name"": ""Mac"",
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  },
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    ""hardware_name"": ""usb stick"",
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]"
3645,"Date: 2014-08
Topic: [Ongoing] Group buy for Antminer S3+ Pre order CC & Paypal accepted $339.99
### Original post:
Purchase the Antminer S3+ 453GH/s MinerHosted by Maidak via Direct Product Link for group buy purchase $379.99 each or $339.99 if you buy 4 or more<link> More Information About Myself:Hello, My name is Maidak. Ive been a member of the forum since 2011. I have been responsible for the management for over 7 years in virtual currency, bitcoin and other non refundable purchases in exchange for virtual and physical products. Here are links to some of my previously conducted group buys:<link> choose me?Please see here for a consolidated list of various forums and websites where you can view my feedback:<link> am the owner/operator of bitcoinminerz.com, a bitcoin mining hardware and accessory shop. This group buy will be conducted via the site for convenience. Check out my site here:<link> I have successfully operate a free escrow service in the forums:<link> see here for more information about my reputation:<link> I am a publicly approachable, genuine person. I have nothing to hide from the community.I am a TrustWho verified member:<link> Learn more about the TrustWho service here:<link> I aim to provide a superior customer service experience!

","[
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    ""hardware_name"": ""Antminer S3+ 453GH/s Miner"",
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]"
4860,"Date: 2013-05
Topic: [Ann] FUNDED ASIC, 4631 chips available
### Original post:
Message verified. Cool.

### Reply 1:
I'm in as well - just emailed you with TX details.Cheers

",[]
10661,"Date: 2017-11
Topic: Antminer R4 - Wrong chip index
### Original post:
I've got an R4 which will not mine, the system boots and it seems that when the auto frequency script runs it hits an error and can't proceed.Kernel log-Miner fix freq ...Fatal Error: <truncated> Chain[-1] has Wrong chip index=7893959Here's the <truncated> Error: <truncated> Chain[%d] has Wrong chip <truncated> ideas?I've rebooted and power cycled a number of times, re-flashed the firmware - tested with another know good PSU. I've logged a ticket with Bitmain but thought perhaps someone on here had seem this issue before and may have a fix. I thought it would be unlikely for both hash boards to be faulty.***edit - I think <link> is the same problem.My testing has concluded I have a dead hash board - miner is now functional with just a single board connected.

### Reply 1:
I just got 10 R4's in today and 1 of them has this same problem. I really don't want to have to send another miner back to Bitmain. Anyone have any ideas? I updated to the latest firmware on Bitmain's site and still have the same error.Chain[J7] has 63 asicChain[J8] has 0 asicretry Chain[J8] has 0 asicretry Chain[J8] has 0 asicretry Chain[J8] has 0 asicMiner fix freq ...Fatal Error: <truncated> Chain[-1] has Wrong chip index=7893903

### Reply 2:
A bad chip is a bad chip. The way the boards are laid out it only takes one bad chip to take a board out. There isnt much you can do except warranty it.

### Reply 3:
I was missing a board on my R4B1 , cold solder on the big inductor. Re-soldered it, need a lot of heat to do the job I redo all connector too. Cleaned with alcohol , dryed with compress air. Back in business.

### Reply 4:
I just joined the sick R4 Club... ref <link> now at least the bad board is still somewhat working with 55 chips vs the normal 63 and giving 1-1.4THs vs the usual 4.4THs .Lovely timing....

### Reply 5:
I've just disconnected the faulty board and I'm mining with the remaining board. Bitmain want the entire R4 back not just the hash board - I'm waiting until after CNY to ship it off, no need to make a bad situation worse.

### Reply 6:
Hash PCB is probably damaged. Any mod or self attempt repair may result in warranty denial tho. Just be careful. To be safe for warranty, when the unit does not recover with simple power off power on, or testing with already announced trouble shooting method then start warranty process or repair process be the safest way. We do see many ""eye opening"" hash pcb and control module send in for repair that were previously self attempted and that process caused more damages than it fixed the problems.

### Reply 7:
I am pretty sure the reliability issues are going to be the same across all the .10j/gh chips regardless of them being in an S9 or R4. They are trying to run them on the jagged edge of the power required to run the chip properly hence the T9 being slightly less efficient but most likely much more reliable.

### Reply 8:
We'll see, I should have some T9's early next week. Fingers crossed, they fair better.

### Reply 9:
Now my second R4 from batch 6 has now lost a hash board. Reliability isn't looking so good. That's 2 dead boards out of 2 miners.<link>

### Reply 10:
Chalk up another R4 problem. Same shit - day after I got it. I have 2 one has been going for 3 days *got here 1 day earlier for some reason. Now I didn't even get 48 hrs out of this one. Not cool.

### Reply 11:
Same problem here. Though mine only hashed on both boards for about an hour. Now it's just one board. Hopefully, that one keeps working until after their holiday. I was thinking of sending to Bitmain Warranty and eating the repair cost, since it saves on shipping and downtime. Anyone know what they are charging for an R4 repair?

### Reply 12:
Charging for a repair? That's ridiculous! ITS under warranty. The real problem is with trying to run the unit with only one board is the airflow. The air takes the path of least resistance and will bypass the heatsinks if you try to take out the other board. Mine originally worked with both hash boards, but I noticed that it was only hashing on one board. So the natural thing to do is restart it....DONT! Then you have to troubleshoot the bad board and disconnect it from the hash plug to make just the one board work. They should advanced exchange a mining board on something less than 30 days old. I don't mind paying for the board and waiting for a credit, but to buy something ""brand new"" and have it not make it 48 hrs is ridiculous. In any other industry the company would be run in to the ground and no one would support them EVER AGAIN! Now we know why United States has laws governing too much control of an industry. Makes me sick I have to work on anything I just paid money for. Can you imagine buying a new Ferrari and the tire falls off and they say oh we are sorry, please send back your $ 300k car for a month while the value of your new car is going way down so we can do what we <rest of post trunca<rest of thread truncated>
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""hash board"",
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21209,"Date: 2016-12
Topic: AQUIRED BITFURY USBs x 20 NEED STEP BY STEP INSTRUCTIONS
### Original post:
In haste i aquired the RedFury USB miners without knowing the dynamics of mining let alone how to download bat files and what to do with them, so im appealing to someone kind with patience to guide me step by step on how to begin, i know its not going to be profitable for me im doing this for knowledge and a hobbie mainly before i buy my S9s , when im up and running id like to donate a nice reward for your help, ps when i say step by step i mean step by step as im computer illiterate lol ill make it worth your while i promise, thx for listening

### Reply 1:
First, connect em to your pc by means of a POWERED USB hub. You may need several as some may not supply enough electricity. Each stick uses 2.5 Watts of power. Second, download CGminer and enter the pool URL and username as well as password if applicable. You will need to register on a pool, which is self explanatory. If all is done correctly, the miners will hash and it'll show on the pool. Haven't used red furies in a while as I switched to Gekkos and U1s but they should work just fine.

","[
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    ""hardware_name"": ""RedFury USB miners"",
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    ""hardware_name"": ""S9s"",
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    ""hardware_name"": ""POWERED USB hub"",
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    ""hardware_name"": ""CGminer"",
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  {
    ""hardware_name"": ""Gekkos"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U1s"",
    ""hardware_is_owned"": true
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]"
5343,"Date: 2013-06
Topic: Looks like Luke-Jr got a long board Single
### Original post:
Interesting spike here: <link> was supposed to get one soon, to fine-tune BFGminer, in odrer to facilitate the latest design changes of the long boards.Fingers crossed ...

### Reply 1:
I guess they finally shipped him one.

### Reply 2:
interesting to see the hashing power of the single now

### Reply 3:
So he went from 26 to 70. Thats 44 LOL. Best 50GH unit ever.

### Reply 4:
More than likely it is not running 100% of the time since he is probably doing testing on it.

### Reply 5:
A number of the ~5GH/s units sent to devs the last round were also hashing all over the place: Link to post - 4.0 GH/s through 6.2 GH/sVariance on those units should have been expected, given recent history.

### Reply 6:
C'mon, is more than 70. Spikes were at 80. That could easily translate avg. 76 - 26 = 50GHz, as they promised...

### Reply 7:
Sorry yep I read the wrong point. ~50.

### Reply 8:
So they are 3-4 weeks away now to start shipping singles, assuming the time it took since Luke-jr delivery and the rest of us.

### Reply 9:
Actually, if it is one qualified for shipping to most of the pre-orders, it would be:76 - 16 = 60ghz, as they promised...The 50GHz device is a more recent model. And what you can order now.

","[
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    ""hardware_name"": ""long board Single"",
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  },
  {
    ""hardware_name"": ""~5GH/s units"",
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  },
  {
    ""hardware_name"": ""50GH unit"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""singles"",
    ""hardware_is_owned"": false
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]"
2526,"Date: 2014-01
Topic: AsicMiner Cube 38Gh/s 1.1BTC Clearance Deal - WorldWide
### Original post:
Hi FolksHaving a clearance sale of the Asicminer cubes direct from factory in chinaPrice is 1.1BTC per unit inc delivery by DHLMore than 1 unit price 1.05BTCMore than 2 unit price 1BTCPlease ask any questions Delivery takes 3 - 5 daysMy Current Stock:

### Reply 1:
How can you be clearance-ing them out at 1.1 BTC shipped when people like Canary are selling them at .75 + shipping (which still puts it below .8 each)

### Reply 2:
He is USA seller, I am worldwide, Thanks

### Reply 3:
Hi Crover, I noticed the dumbbell in the background, how much are you curling

### Reply 4:
These can make for good dumbbells when they die! Each is 10 lb?

### Reply 5:
Hi Excuse my ignorance but how and why would this be better then just buying the GHS from something like ceX.io ?

","[
  {
    ""hardware_name"": ""Asicminer Cube 38Gh/s"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""dumbbell"",
    ""hardware_is_owned"": true
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1657,"Date: 2013-09
Topic: [UPDATED] Bitfury miner group buy + hosting (with ESCROW) 6/20 shares left
### Original post:
Now collecting towards a bitfury burner board (40-80 GH/s, estimated 64 GH/s, early October delivery estimate). This has already been ordered and paid for (we have an early order, which should ensure early shipping).Now 6 / 20 shares remaining for this component

### Reply 1:
bought another share ,here's the txtid <truncated>

### Reply 2:
Good news from Cryptz (supplier of the bitfury burner board)

","[
  {
    ""hardware_name"": ""bitfury burner board"",
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]"
356,"Date: 2013-06
Topic: [Groupbuy] Jupiter KNCMiner (0.5 BTC shares) 10 sold! 11th miner: 33/120 sold
### Original post:
how long until this group buy close up?

","[
  {
    ""hardware_name"": ""Jupiter KNCMiner"",
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]"
12090,"Date: 2012-10
Topic: Go Cayman Go
### Original post:
Pretty nice. Mine's named Jupiter.

### Reply 1:
What is the delicious looking thing?

### Reply 2:
nice looking app

","[
  {
    ""hardware_name"": ""Jupiter"",
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]"
16533,"Date: 2023-06
Topic: i have 400$, i cannot buy a good miner, is cloud mining a good idea in this case
### Original post:
my question up , but lets just say <h1>pls response to this question</h1>

### Reply 1:
Most cloud mining websites are scam. So my suggestion is to stay away from those, else you can easily end up with the money taken and nothing mined at all.

### Reply 2:
Majority of the cloud minings are an evolved form of ponzi. So no, I wouldn't recommend any cloud mining platform except Nicehash. But again do a thorough research before you actually invest your money into their system andnknow about the risks of doing so. Also with 400 ISD initial investment, you won't be able to buy so much power that will give you a guarantee to find a block. So please refrain from such investments. It's a personal recommendation.

### Reply 3:
There is still Bitdeer, it's owned by Bitmain, I haven't heard any issue with them but I wouldn't recommend them- their packages are 99% of the time over OP budget- if you break down the numbers and take into account a rising hashrate which will definitely come you're better off just buying BTC and waiting for the price to rise, I made a projection a few days ago and if the hash rate would have jumped by 25% in the next 90 days you would be losing money even if there was no growth afterward with the current offers, and we just had a 10%.So OP, better stick to buying and hodl.

### Reply 4:
You won't be able to mine Bitcoin efficiently with $400.You'll get a much better return by just buying Bitcoin directly with that $400.

### Reply 5:
mining in the cloud is complicated.All cloud mining companies have a ""we can fuck you at anytime clause""So if BTC goes to the moon they will cancel your contract rather than pay you the btc. You will get a refund at bestand if btc crashes and burns they will cancel your contract rather than mine at a loss.So for cloud mining deal to work you will need to hope Difficulty and BTC price move in such a way that you make a small profit.Not a loss = the fuck you clause will be used to cancel youNot a big gain = the fuck you clause will be used to cancel youMy suggestion is hope for a crash and buy some coins.BTW we are down to 38900k so buy 100 usd worth and then hold 300 in cash.If we drop to 35 k buy 150 usd worth and hold 150 cash.If we drop to 30k buy 75 usd worth If we drop to 25k buy 75 usd worth.hodl all of the coin above for 4 years no matter what happens. Then thank me.worst case is you only buy 100 worth at 38900 and it moons.best case you get to buy all this levels you hold for 4 years and it moons.

### Reply 6:
99% of cloud mining available is all and the few legit is only offering a very minimal profit which will take you a couple of years to make a ROI rather than just trade the token that you want to mine. The price volatility of crypto is a good opportunity to make tons of profit compared on the passive income side given by cloud mining. Staking in DeFi is much advisable and I believe the new form of cloud mining.

### Reply 7:
Some years ago I have used cex.io service of Cloud mining (yet some years ago they have offered that service and It was also possible trade computational Power).At a certain point the whole process become completely inefficient with high fees, and practically negative gain or ROI (at this point as suggested you can earn more Just hodl your Coin or with DeFi etc).Most of Cloud mining sites are just Ponzi all user with experience agree on that and you can check by yourself... No sites provide real proof of mining but Just fake information.

### Reply 8:
Look into DeFi projects. I keep seeing your posts about $400 lol

### Reply 9:
buy btc now... when your 400 becomes 800 you can buy a second hand miner

### Reply 10:
First part of suggestion seems simply obviously but isnt because buying directly Bitcoin Is the easiest solution (and the best one with that conditions)Second part should be revised because difficulty will be higher... Like ""inflation"".It Is required a more and more expensive miner (more or less )after each difficulty adjustment...

### Reply 11:
With $400 budget the best thing you can do is buy btc.

### Reply 12:
I've always wonders what is the point (profit) of all that cloud mining and if the price goes down who's gonna mine at all on a loss. I never though about the price goes up scenario here. With these 400$ maybe only a lotto mining if you want to see how it works.. that's all. A guy hit a block with some USB miners lately, right?

### Reply 13:
You are talking about most cloud mining websites are scam. So, there are websites that provide cloud mining without being a scam? Can you name those that have proven themselves well and can be trusted? Or should all cloud mining websites be treated with suspicion and caution?

### Reply 14:
Cloud mining is another example of ""not your keys, not your coins"". If anything happens to a cloud mining project or decide ""to do something shady"", you will ne<rest of thread truncated>
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13037,"Date: 2014-04
Topic: Win32 CgMiner CURL static linking
### Original post:
Helloo, i have build libcurl with ssl support statically myself, when i try to compile a simple samples it links allright in a static executable,but when i try to link it with cgminer 3.6.6 i <truncated> note: this is the location of the previous definition# define _WIN32_WINNT <truncated> cgminer-api.oCC cgminer-logging.oCC <truncated> cgminer-ocl.oCC <truncated> cgminer-adl.oCCLD <truncated> undefined reference to <truncated> undefined reference to <truncated> cgminer-cgminer.o: bad reloc address 0x200 in section <truncated> final linkfailed: Invalid <truncated> error: ld returned 1 exit statusmake[2]: *** [cgminer.exe] Error 1make[2]: Leaving directory <truncated> i assume timeEndPeriod are undefined for some reason now, how do i fix that?My configuration of cgminer is My configuration of libcurl is My configuration of openssl is

### Reply 1:
Just solved the issue:Add to your <truncated> solved the timeEndPeriod for me. Also, have you used the <winsock2.h> edit?I am building 4.2.2 and with less settings but did encounter the same issues. My last build had zero errors but wouldn't run. If I discover anything that could help you I'll post or edit my post.Edit:Sorry I'm also assuming you've made all necessary changes: such as -lcurl -lcurldll to libcurl.pc**Throws Hands In The Air** I'm compiling with no errors and it still or won't run or I'm getting _WIN32.... already redifined >> When I fix this I get timeradd <truncated> -msse2 <truncated> -lws2_32 -lshlwapi -lmswsock"" ./configure --enable-icarus Code:Minimum system required Minimum value for _WIN32_WINNT and WINVERWindows 8.1 <truncated> (0x0602)Windows 8 _WIN32_WINNT_WIN8 (0x0602)Windows 7 _WIN32_WINNT_WIN7 (0x0601)Windows Server 2008 _WIN32_WINNT_WS08 (0x0600)Windows Vista _WIN32_WINNT_VISTA (0x0600)Windows Server 2003 with SP1, Windows XP with SP2 _WIN32_WINNT_WS03 (0x0502)Windows Server 2003, Windows XP _WIN32_WINNT_WINXP (0x0501)

",[]
2206,"Date: 2013-11
Topic: [OPEN]  BTC up, RED FURY down to .32 - USB Miners - USA Group Buy
### Original post:
I just got mine, and it seems to be working well. It's slower than I expected though (2.2Gh/s).

### Reply 1:
most seem to run at 2.2 to 2.4 not 2.5 -2.7

### Reply 2:
I see. It has stabilized at 2.1Gh/s now though

### Reply 3:
is this in stock and ready to ship ? and in how many days can I expect this to arrive. estimate.

### Reply 4:
My first one took 2-3 days. I ordered 3 more but the long holiday weekend has seemed to slow shipping. I am hoping to get mine on weds. My guess is he has them in stock.

### Reply 5:
I ordered one from him today.. will let you guys know when I receive it. These are really a good price right now.. should jump on them while you can.

### Reply 6:
How many can I fit comfortably on a dlink dub7 hub?

### Reply 7:
can you ship these to AUS?Also what software do they run?

### Reply 8:
I set mine up with bfgminer and used www.bitminter.com with windows 7 on an asus mobo with an intel cpu.

### Reply 9:
I'd like to buy some, please reply to my PM

### Reply 10:
Any chance of a price reduction as BTC has gone well over $400 now?

### Reply 11:
four for sure. <truncated> so a hub that did 7x .333 or 2.3gh will now do about 4x 2.2 or 8.8 gh2.3gh vs 8.8gh and the 4 stick will pul less power.the one stick I got is running with bfgminer 3.6.0 on bitminter.com same pc is running am sticks using bit minter java client. so you can avoid the issue of setup conflicts. you can also clearly see what the stick hashes since it is the only one using bfgminer. my stick has been 2.37gh which seems to be good for these sticks. when I get the next 3 mailed to me I will post speeds. One thing for sure they should change the speed rating to 2.2- 2.5gh plus or minus 10%. the setup is harder then Am sticks. they are a lot cooler then am sticks.

### Reply 12:
0.25 ?

### Reply 13:
Has anyone gotten a reply from oaxaca in the last few days? I PMed him asking to order two days ago and haven't heard a peep since.

### Reply 14:
I ordered 1 red fury on 11/11 and I haven't heard a peep from him since. However, he did confirm receiving my payment.

### Reply 15:
I just received mine from him today! Now I just have to figure out how to get it to work.. I am currently using bfgminer, but its not picking it up.

### Reply 16:
they are hard to start. what bfg miner do you use? use 3.6.0and did you load the drivers. I will look for the youtube video link on driver loading.<link> this lets you do windows 7 drivers above<link> use 3.6.0 for windows 7once you have the driver loaded and you have done bfgminer up to the point of password click the reset button on the stick then press enter on the password to start bfgminer fast boom boom. if you wait too long before hitting the start of bfgminer after you hit reset it can freeze.

### Reply 17:
I am waiting for my three. we spoke via pm on the 11th make that the 14th . I ordered the 8th make that the 9th. I am getting a bit nervous . I will go back and check dates. I checked the dates I sent the money for 3 on the 9th. I asked about them on the 13th he replied on the 14th. So I will wait a bit for them. I am hoping all is well. He did let me use paypal so I am protected.1st shipment was fast. I would think that holidays are starting up I should see them soon.. It does not make sense that he would let me use paypal and not ship. Most likely this is a Post office issue.

### Reply 18:
I am on OS X Mavericks:bfgminer 3.6.0cgminer 3.8.1Below is what I get when I run cgminer --ndevs:./cgminer --ndevs[2013-11-15 15:38:52] USB all: found 19 devices - listing known devices.USB dev 0: Bus 250 Device 7 ID: 03eb:204b Manufacturer: 'BFMG' Product: 'Bitfury BF1'.USB dev 1: Bus 250 Device 15 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller'.USB dev 2: Bus 250 Device 14 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller'.USB dev 3: Bus 250 Device 13 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller'.USB dev 4: Bus 250 Device 12 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller'.USB dev 5: Bus 250 Device 11 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller'.USB dev 6: Bus 250 Device 10 ID: 10c4:ea60 Manufacturer: 'Silicon Labs' Product: 'CP2102 USB to UART Bridge Controller' [2013-11-15 15:38:52] 7 known USB devices So it can see it, but I just cant get it to mine with it. Do I have to run two different instances of bfgminer and or cgminer?

### Reply 19:
Then maybe he's out of thumbs, or I need to PM him again, because I sent a message asking to order on the 12th and still have no reply.

### Reply 20:
So I got it to work..just have to run two instances of bfgminer:bfgminer -S bigpic:all for the red furyBut now I am getting like a 45% HW error rate.

### Reply 21:
are you hashing ove<rest of thread truncated>
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15302,"Date: 2014-08
Topic: Miners: Time to deprioritise/filter address reuse!
### Original post:
Addresses have always been considered single-time-use since Satoshi released the whitepaper.While the community has tolerated reuse for things like donation addresses due to lack of convenient alternatives, it looks like the time is here early that this needs to stop.I had hoped to defer anything in this area until wide deployment of the payment protocol (which should make such things unnecessary), but our hands1 are perhaps2 being forced3 to act sooner4.I am hereby announcing the first release of a the first patch for miners to filter address <truncated> for bitcoind 0.8.5For now, since this is still somewhat common, this just deprioritises it to one reuse per block.If I have time, I plan to write patches to be more and less aggressive that miners can choose between (or maybe others will beat me to it!).If you want to support this move, encourage your favourite mining pool to adopt this or a similar policy change, or use a decentralised pool that lets you apply it yourself.In collaboration with wizkid057, the Eligius mining pool (15% of total network hashing) is now the first to deploy this change on an experimental basis.

### Reply 1:
good on you man. This was the best approach to stick it up yifu's ass.

### Reply 2:
I'd previously run something similar on my miners.Beyond encouraging behavior that improves privacy for everyone and making censorship more of a non-starter, this has a benefit of giving naturally more equitable access to the shared resource of the blockchain: If someone is self-identifying as a single user by using an address over and over again, why not use that information to give other transactions (which may all be from independent users) more equal access?The specific details of what form the deprioritization takes are less clear. Right now this patch implements a hard prohibition on reuse that has a one block scope. E.g. if there are 10 transactions with 1APPLE and if all miners ran this patch it would take 10 blocks for them all to make it in. I'd probably prefer something softer (e.g. treat reuse as having half or quarter the fee/priority), but with longer memory... but the important thing is to get it out there and explore the ideas and effects, and also clean up some of the Bitcoin ecosystem which was lazily reusing addresses constantly for no reason except nothing was incentivizing them to fix it.We need to get some things (like BIP32) deployed to eliminate some of the <rest of post truncated>

### Reply 3:
How would this effect things that require a static address? (Donations, etc.)I personally would prefer to see those HD addresses, or address scopes.

### Reply 4:
So you're going to make it harder for people to spend coins they legitimately earned. I have no intention on slowing down transactions on the network by forcing people to implement changes to how they receiving mining payments/accept donations due to overreaction to some Coin Validation scheme that I doubt will ever actually come into existence. I'll react if it shows the slightest sign of ever actually being implemented, but I highly doubt it ever will be in the first place.

### Reply 5:
I particularly think this is a good ""selling point"" to this.

### Reply 6:
Yeah lets make things more complicated!! Who wants user-friendly bitcoins anyways... Btw what's the reason for such a change? Are we after vanity addresses or something

### Reply 7:
Those things don't require a static address; it is simply much more convenient to use one. Ostensibly, deprioritised transactions may still go though, but it may take hours of days. If you are only emptying such addresses monthly, should not be much of a problem. Fees can likely be used to bump the priority back up.Check the links in OP. <truncated> are coming. If implemented by a large number of merchants or exchanges, they will hurt the fungibility of Bitcoin. Without fungibility, you don't have money: you have collectibles.

### Reply 8:
Except if you are expecting more than a single transaction every 8mins. Are you saying we should make it harder to use bitcoins? I am all for the change, but there does not appear to be the infrastructure in place to support this change. Implement HD addresses and we would be ready to go.

### Reply 9:
Knee Jerk Reaction.

### Reply 10:
In most normal business use you already must use a new address for each transaction you receive in order to distinguish which user is paying you.Note that reuse has always been problematic and this isn't news. How long do we have to wait for uses to improve their transaction hygiene while there is no direct incentive to do so?Was it an anti-casuaul knee jerk reaction that had me running a similar patch on my mining farm years ago?

### Reply 11:
There are things in the works to make things easier, like the payment protocol and BIP32.As I said, it would have been nice if these matured before we phased out address reuse, <rest of thread truncated>
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14742,"Date: 2013-06
Topic: Post your Temps!
### Original post:
70-80 Celsius mark is fine, but mostly 70-90 if clocked and runing a miner 24/7 with extra flags

### Reply 1:
Sometimes it's under 70, sometimes it's over 70, depending on the ambient. When it hits 50F at night, they stay pretty chilly. When it hits 85F in the day, the fan is crankin and they get underclocked to stay below 73C.The joys of living in New England.

### Reply 2:
50 ambient??? Lucky... Mine stay pretty cool at 80c considering ambient is usually in the 90s

### Reply 3:
Living in Atlanta. In the daytime my xfire 7970s are averaging 78-82 C during the hottest part of the day. Been around 85F, 30C ambient temperature in the room where the machines are running. Temps outside also the same though very humid out there.

### Reply 4:
60-75 average ranges depending on temp outside as Im drawing in cold air. Although one sunny hot afternoon my GF decided to close the door to the room my rig resides in cutting off the air circulation I had going on. When I noticed it was closed a few hours later I walked into what felt like a pre-heated oven and the temps of some of my cards were low 90s and one of my systems had already crashed. YIKES!

### Reply 5:
Pansies. Some of my multicard rigs idle at 57C on the hot card, so keeping under 90C is good....considering the ambient in the room was 103F.That was with full AC running in a commercial building - outside ambient was 106F last week here in SoCal.These damn voltage locked cards will the first to go

### Reply 6:
I'm doing my best to keep them under 75C.

### Reply 7:
Rig16950 @ 900Mhz 89c Gigabyte tripple fan OC model6950 @ 940Mhz 79c Gigabyte tripple fan OC model6570 @ 750Mhz 75c Asus5570 @ 690Mhz 92c Shit (was used for bitcoin mining. Unused for litecoin due to stability)Fans manual @ 70%Rig26870 @ 960Mhz 92c Sapphire OEM blower fan model6870 @ 915Mhz 92c Sapphire OEM blower fan modelFans auto, stable around 52%Work computerR6570, Stock settings, fans on auto, 72cLow aggression during work hours.

### Reply 8:
Rig1: 3x 7950: coolest card 58C hottest 66CRig2: 4x 7850: coolest card 55C hottest 63CRig3: 2x 7970: coolest card 60C hottest 67CAuto fan, Auto GPU clock (cgminer 311a (kano's mod), xubuntu 12.04 from persistent usb flashdrive)Ambient temperature 25C, window open I won't sleep if any of my rigs touch 70C, no way GPU's are way too expensive to risk them like that IMHO.

### Reply 9:
70 and up to 80C is not dangerous for the GPU.I've ran mine at ~70 for months.

### Reply 10:
The VRM temps are what most people should be worried about more than the actual cores. The VRMS almost always run hotter than the cores and they sometimes have bad cooling with the aftermarket designs. Use GPUZ to see what they're running. I'm OK up to 85C, beyond that is asking for trouble even in the short term.

### Reply 11:
Heh 6990 on stock clocks runs upto 99 with other cards next to it Underclocked & undervolted it and gained a few mh/s once the temps dropped to 70-80 degrees. cool hey

### Reply 12:
Totally agree with that!, VRM temperatures are the most dangerous ones.Typically in 7950 / 7970 Sapphire Dual X Cards, they are 1 or 2 degrees above core temperature, so it is not dangerous, but this is on BTC mining.In LTC is completely different, I have some cards than in LTC are 10 degrees above, others 15 degrees above core, that's why when I mine LTC y downclock the cards to 820 - 840 Mhz, and lower the voltage to 1.080, because VRM gets hot as hell in LTC! at stock speeds I have seen 86 degrees on the VRM YIKES!! (which they are also cooking the memory chips!).I think that sapphire completely underestimated VRM cooling with the flat heatink that covers the VRMs and memory chips.

### Reply 13:
My two Gigabite 7970 run 65-87 C. One runs hotter than the other one.The one that runs cool is consistently 72 C at stock speed. The hot one runs consistently 80C at stock speed. I swapped the two cards to different PCIe slots and get the same result. So I removed the hot 7970 yesterday and checked it carefully. Long and behold, the screws for the VRM heatsink were loose. What the h*ll? It's a new one month old card. So I tightened the thing down to finger tight. (Not very scientific, I know.)Then decided to remove the heatsink and see what's going on underneath. There doesn't seem to be enough thermal paste between the 7970 core and the heatsink. Removed the existing thermal paste, cleaned off with rubbing alcohol, reapplied with Arctic silver paste. Now it runs consistently 4 degree C cooler.

### Reply 14:
after reading your post, paranoia hit me again I will check all the screws of my hottest cards just in case.

### Reply 15:
<link> a bit worried about GPU #2 temp, but doenst know what it is

### Reply 16:
Too high fix it somehow!

### Reply 17:
What is the maximum GPU#2 temp i can run?

### Reply 18:
You are using scrypt right? (LTC) in scrypt there is usually 10 to 15 C higher in VRM than core temps, so you must get th<rest of thread truncated>
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21105,"Date: 2016-08
Topic: Antminer S9 - How do i enable API please?
### Original post:
Hi there, I have antminer s9's and wondering if someone can help me configure them for API access - step by step please? I can remote SSH in to them not a problem, just have no idea what to do from there?ThanksR,.

### Reply 1:
dont know dont touch , by default it's enabled

### Reply 2:
At <truncated> : [...],""api-listen"" : true,""api-network"" : true,""api-groups"" : <truncated> : ""W:0/0"",...}but keep it out of your DMZ

### Reply 3:
No, don't do that.That matches what the morons at Bitmain did to all the miners before and thus allows anyone anywhere with network access to change it.Set it to R:0/0 (not W:0/0) if you don't understand the settings.Or read the manual I wrote for the API (I wrote) <link>

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14685,"Date: 2013-04
Topic: Mining rigs: XL sized cases versus open air solutions
### Original post:
it depends on what you put in the inside and how do you clock it, then from the room temp.Maybe 2-3 cards underclocked and undervolted in a fresh room could be ok.

### Reply 1:
On default settings of memory and voltage I think they will get hot in a short time if you keep the case closed. And if you have to mine Litecoins the problem gets much hotter.

### Reply 2:
a good case flows air better than an open air scenario, but the problem is spacing the GPUs apart which becomes an issue when you use more than two cards as most are double slot cards and if theyre stack right next to each other they will get hot

### Reply 3:
I run 8x5870s in two XClio Windtunnel cases with all fan slots filled. I used pcie extenders to space the cards out; this required some creative mounting and motherboard choice is critical. Also, I have a 100w exhaust fan pulling fresh air into the room. Undervolt in the summer/daytime, overclock in the winter/nighttime.I also have an open air setup with 3 5870s, and they run a little cooler. I've had to replace all the fans once due to dust, both on the cased cards and the open air cards.I would say as long as the 7950s are dumping exhaust mainly out through the back of the case, and there's a path for it to get away from the case intake fans, it should be OK. Too bad GPU mining has a finite lifespan these days... at least when it's over you'll have a ridiculously powerful 3d/multiscreen gaming rig to play with.

### Reply 4:
A proper push/pull large (120mm) fan configuration back to front in an enclosed case should cool better than just letting them sit out in the open I would think. Depends on the environment they are in too though, cool spaces away from your living area are best naturally. If you live in a cold place your mining rig can double as a space heater that pays for itself

### Reply 5:
I just got my 7970's yesterday. Not done extensive testing yet but opening the case increased temperatures by 5 degrees so the case is now closed.This matches with my experience working with high end servers.The only way I imagine open air cases working is if you stick a massive room fan to it.

### Reply 6:
An open air setup with the 1 card plugged directly in the first slot and the rest of the cards on extenders and arranged in staggered position (@ 130 - 140 degree angle) is about 10 degrees cooler than any closed case setup I've used in the past. If I had more time and/or was more enterprising I would design the 180 degree (angle not temp ) setup that's in my mind. Basically each card installed flat on platform above MB and fans blowing to the sky... I never understood the card separated by clothespins or blowing hot air into to each other setup. Except for space limitations I suppose in huge setups.

### Reply 7:
As far as enclosed in a case, my cards have been running all day, first 12 hours of mining! 68c, 71c, 78c. Which is because the 3rd one is really close to the bottom of the case.Ambient temps, 22c at the front of the case, 23.5c at the back of the case. I've got a 5400rpm 120mm fan at the back doing the extraction, and another at the front of the case which is blowing cool air directly down the channel of graphics cards. I've pulled em down to 4000rpm at the back and 3500rpm at the front. These are serious server type fans.... So lots of airflow.Ambient temperature in my room is 24 degrees, it doesn't ever get very high as I live in an old brick house so the summer's are still cool.

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    ""hardware_name"": ""5400rpm 120mm fan"",
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  },
  {
    ""hardware_name"": ""4000rpm fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3500rpm fan"",
    ""hardware_is_owned"": true
  }
]"
15453,"Date: 2015-01
Topic: How much btc mined?
### Original post:
I mined 50btc

### Reply 1:
in what amount of time and what miner?

### Reply 2:
you're earlyCarnival is between 2 months

### Reply 3:
how did you mine 50btc? i only managed to mine 4-5btc and lost quite some now have around 3btc

### Reply 4:
I hope you have those coins in cold storage. Having 50btc in a hot wallet would be very risky.

### Reply 5:
i think the better way to be safe, it is to print 50 or 100 paperwallet and store it offline!!!remeber if you put in usb, it could demagnetize or broke!!!and you lose everything!!!

### Reply 6:
demagnetize NAND based flash?

### Reply 7:
USB Pen are not damaged by magnetic fields!hard drives [HDD] instead, can be damaged by magnetic fields

### Reply 8:
I mined in 2010 Just wondering... How much BTC do you guys even hold/hodl?

### Reply 9:
any other info on when did you mine? mining power? what miner and how much electricity did it costs?

### Reply 10:
Back in 2010 when the prices were to less, mining felt risky I wish I could get in then.

### Reply 11:
Yet not mined. But thinking about mining my btc

### Reply 12:
Not that risky. Your CPU could've mined a block per hour

### Reply 13:
Now that I look back, there's so much regret.Wasting my life on other stuff when I could've been mining or investing in Bitcoins.

### Reply 14:
Not mining. No income, can not even recover.

### Reply 15:
wowwww , how you get 50btc ?

### Reply 16:
Do you buy any mining hardware ?Is blockchain is a kind of cold storage ?How risky if I save my bitcoin into hot wallet ? Easy being hacked ?

### Reply 17:
Ive mined 1-2 bitcoin with some Antminer s1's, But Doge I mined 4-5 BTC worth last holiday during the big boom XD. Now I mine on the cloud.

### Reply 18:
on the cloud???wich service with Ponzi inside are you mining on?

### Reply 19:
I wouldn't trust keeping any coins on blockchain.info. They've had serious security issues lately. If you have a lot of coins, put them in cold storage. Meaning, get a hard drive, encrypt it with TrueCrypt (optional), install your wallet on there and keep copies of the wallet.dat file on some other flash drives as a back up, and keep that hard drive disconnected from the Internet. That's it. You can always check the balance of the wallet by checking the address that holds the coins on a block explorer site (blockchain.info is good for this).

### Reply 20:
I mined 10000BTC and spent it on 2 large pizzas under my alt, Lazlo:youngmike with his useless posts strike again...

### Reply 21:
Was that really you? Do you have any proof?

### Reply 22:
very cool!

### Reply 23:
Lol NO! I was just trying to make a point with youngmike's useless ""I mined 50 BTC"" post.No way was I involved in the CPU/GPU days mining 10000 BTC. I wish...

### Reply 24:
This is called a long-term investment?

### Reply 25:
USB can be destroyed, he should store an encrypted paper wallet on many devices or papers but it's not the point of his thread.50 BTC mined is huge.

### Reply 26:
How in the world did you do that?

### Reply 27:
He mined in 2013 or before

### Reply 28:
for offline wallets you can use armory or electrum, for better understanding of cold wallets: <link> bitcoin on a hot wallet without a back up is a bad idea.. your computer is as secure as you manage your security, you should not hold btc on any online sites since its risky. For electrum offline wallet <link>

### Reply 29:
I think your view is very close to the correct answer.htc one mini 2 hlle

### Reply 30:
the all btc mined its in 2013-11-05 of 11.950.000 Btc i do have six comemorative medals to proof it they inprinted taht

### Reply 31:
Did you keep them?

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    ""hardware_name"": ""USB"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""hard drives [HDD]"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Antminer s1"",
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    ""hardware_name"": ""hard drive"",
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18034,"Date: 2013-09
Topic: Setting up a company in the UK to Mine
### Original post:
Couple of questions really.Are there any UK miners about?Are you paying Tax on any mining Profits?Have you set up a company to mine under to avoid high tax, reclaim VAT etc? And can you offer any tips if you have?

### Reply 1:
To be a company, don't you have to make a profit?

### Reply 2:
Yes.Not a chance.Say nothing - just do it.

### Reply 3:
Yes.God no.What? Setting up a company? Tax? Stop huffing the glue, man. It's bad for you.

### Reply 4:
Classic! Best laugh I've had in ages! -----[No apologies for the grave dig, this thread deserves a bump.]

",[]
22848,"Date: 2019-01
Topic: Default Factory Reset S3 Miner
### Original post:
My friend just gifted me his Bitmain S3 and S3+ miners. However, I can't seem to get into the settings on them, as I assume the settings are still configured by my friend or he's bricked itI can't see the IP address of the miner on my network, but when I do type in an IP address in my browser, I get a page loaded with the followingMoreover, its jsut a red light next to the ethernet/RJ45 plug that stays on. **How can I factory reset the devices?**

### Reply 1:
There is two pins on the controller that might reset it back to defaults with a paper clip/ wire etc or did for me a long time ago,sorry i can't remember the pins it's been that long those miners are so old to use .also there is a reset button hold it in while powering up the miner that might work . then type 192.168.1.99 in any browser . the Default IP is 192.168.1.99.Man that miner beings back memory's.

### Reply 2:
dude what ip address are you typing to get Luci page loaded ? i think LUA it's the programming language used in S3 firmware , i am pretty sure a reset will resolve the issue for you without having to go into much details, you can confirm that ip belongs to the miner by trying to access it while your miner is powered-off, and after you have cleared your browser cache, if the page doesnt show, then that was your miner, if it does, then you might have unknowingly installed LUA and whatever that shows is the a local-web-server running on your pc/network, but that is pretty unlikely.TL;DR, make a hard-reset , look for the new miner ip ,log in , mine away.

### Reply 3:
You can find the reset button on the right side of ethernet near 2 LEDs and use a paperclip (or any stick the fits on the hole) to press the reset button for 5 to 10 seconds. Just found this procedure from here [Guide] Dogie's Comprehensive Bitmain Antminer S3 Setup [HD]

### Reply 4:
Well this doesn't seem to work for some reason, still cant get into the miner.I think the issue I have was that my power was cut during the boot/firmware upgrade. I tripped over some cords and plugged it out.

","[
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  },
  {
    ""hardware_name"": ""controller"",
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  },
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    ""hardware_name"": ""PC/network"",
    ""hardware_is_owned"": false
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]"
13864,"Date: 2011-03
Topic: A really odd question...
### Original post:
So ive been mining bitcoins here and there recently, just doing whatever. When i popped the 2gb jump drive i use for school in, the AutoPlay had an option called ""Windows ReadyBoost"" that was said to ""speed up your system"" . I went and wiki'd the name (<link> and in the article it mentions a 8000-10000 percent increase in the speed of an 'operation'. So could this be used to increase the hashrate when generating? Because it just seems really too good to be true.Thanks!

### Reply 1:
No. Also you have probably been hacked.

### Reply 2:
0 hash rate <truncated> is when you don't have enough RAM, instead of using your HDD as RAM, it uses your flash drive, which has a much faster latency. Bitcoin uses almost no RAM (as long as you have 128MB your fine). This is more targeted to netbooks and very poor laptops and even worse desktopsand Readyboost is actually legit, you have not been probably hacked

### Reply 3:
Sorry Just a sec..... Whew !!!! Sorry, I was ROFLMAO So you say you Googled it and the Jump Drive will increase your processing power by 8000-10,000 percent. Hmm.... Yea, give it a try I hear jumping up and down while farting increases the processing of the hashes too... I couldn't resist, Welcome !!!!

### Reply 4:
Yeah uh I wasn't dead set on this working... Thats why I said it was TOO GOOD TO BE TRUE. Thats also why I quoted stuff, because I was skeptical... I didn't say a thing about processing power, i just said it increased the speed of an ""operation"", which was a vague term...And i didn't expect a 8000 percent increase in speed... that would be insane, i was just wondering if there was some kind of small effect on it.

### Reply 5:
For people who don't have much RAM but have a USB 3.0 ultra fast SSD USB drive, latency goes from 14.1 to <0.01 ms, speed go from 50MB/s to 250MB/s R and W... That is a substantial increase in speed.it is the latency that matters the most here though. Of course, if you have 1GB + RAM, ready boost won't help much except in extreme cases

### Reply 6:
If you are searching for a substantial MH increase, OVERCLOCK! I went from 229ish MH/s to 282~283 MH/s... That's almost a 25% increase

","[
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  },
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    ""hardware_name"": ""USB 3.0 ultra fast SSD USB drive"",
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]"
21107,"Date: 2016-08
Topic: AHHH my Antminer S7 is giving me problems! Please help
### Original post:
First of all thank you for any help! I have been mining ""successfully"" for a few months and I just made the jump to my second miner (another s7) and that is when things went sideways for me lol. I just plugged my second Antminer s7 in today and I'm having some issues and I thought I might ask for some advice. It ramps up to around 3.8 TH/S when I first boot it up but within about 15 seconds its back down to 0. If I reboot and/or change any settings it does the same thing (up to around 3.8 TH/S and then back down) During the 15 seconds of working, it appears as a worker on slush's pool and it adds to my hash rate. But it quickly disappears after 30 seconds or so and when I check the ant miner settings it shows its hash rate is back to 0. It is connected though a internet switch (the same one that my other s7 is hooked up to, and is working properly) and it is plugged into a 250v surge protector that is plugged into a 250v wall outlet (again same one as my other s7). Any ideas??

### Reply 1:
update: I turned down my frequency from 700 to 500 and it runs stable now. However, even with the turned down frequency, the temps are out of control. I'm getting 81 on 1 board.

### Reply 2:
Have you opened it up and checked if heatsinks have fallen off or if its full of dust and fluff?

### Reply 3:
It does look like a temperature problem.Since you already have one miner running correctly, it doesn't seem to be the environment.You should start by ""cleaning"" your miner like gt_addict mentioned, make sure your fans are working correctly too.

### Reply 4:
Fans are working correctly but I will definitely break it open and clean it. I'll let you know how it goes! Thanks so much

### Reply 5:
Figured it out... My ""pull"" fan was running at 3700 RPM and my ""push"" fan was running at 5700 RPM (both at max). I took off the ""pull"" fan and now it is working perfectly. My only guess is that it was trapping the hot air inside the miner since it was bottlenecking at the pull fan... My mistake but thank you for your help gt_addict and unholycactus! Now back to making no profit mining bitcoin!!

### Reply 6:
Glad you figured it out we all love a bit of negative profit mining for shits and giggles

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    ""hardware_is_owned"": true,
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  },
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    ""hardware_name"": ""250v surge protector"",
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    ""hardware_name"": ""250v wall outlet"",
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    ""hardware_name"": ""heatsinks"",
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    ""hardware_name"": ""fans"",
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    ""hardware_name"": ""pull fan"",
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    ""hardware_name"": ""push fan"",
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2979,"Date: 2014-02
Topic: [GROUP BUY] Black arrow x-1 x-3
### Original post:
Sorry, but running on may 2014, that seems a couple of (BTC) lightyears away.. What will you charge for <truncated>

### Reply 1:
Those miners will not be profitable by May, they have already slipped from end of Feb delivery on other group buys, and started offering +25% hosted hashing as compensation (Which it doesnt even come close to compensating for two months lost hash power).IMHO Anyone buying now at these prices is insane, BlackArrow will be forced to drop prices dramatically because of their delays.

### Reply 2:
Blackarrow don't allow group buys

### Reply 3:
Yes they do, via their authorised resellers. Check out bobsag3 on the DZ Miners coop.

### Reply 4:
that's right you can buy from minersource (bobsag's) or from flappysocks in the uk, but not direct from ba like this op wants to

### Reply 5:
Blackarrow Web site...Group buys: Group buys are not permitted. We will cancel any order that we discover that is a group buy and will refund the payment minus 10% that we will charge for our time wasted in this matter. By placing an order for this item you agree with the above.Also, even if they did allow them we are forgetting that blackarrow is likely a scam altogether and this device will never ship to anyone./threadWatch it everyone...this guy is running the same groupbuy in the Italian forum....GEE WHERE HAVE WE SEEN THAT BEFORE???

### Reply 6:
I didn't know group buy are not permitted, i delet it.

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    ""hardware_name"": ""Black arrow x-3"",
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22213,"Date: 2018-01
Topic: Access Antminer config through wifi Repeater
### Original post:
Hi,i'm using an Elegiant wifi repeater which has an ethernet port to connect to the Antminer.I don't know how to edit the Antminer's configuration, I can access it easily for the tests near my Box when it's on the original network but i don't want to move it all the time I want to change something...Has someone any idea how to fix this ?Thanks,loulou21

### Reply 1:
Your answer is probably in the repeaters manual. My guess is that the repeater has a dhcp server and gave the Ethernet port a different IP subnet or something other than 192.168.1.xxxGo to the repeaters web page and look at the configuration to see if it lists it's dhcp leases. Find the ant's IP and you should be good

### Reply 2:
That was definitely the right answer, I managed to find it on the 192.168.10.x subnetwork.Thanks !

### Reply 3:
Great, glad to help!

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18597,"Date: 2014-01
Topic: eloipool help
### Original post:
Hi,I am trying eloipool for the first time, but couldn't find any helpful documentation so far.Can some one please provide me link or the doc itself if there is any <truncated> help and guidance.Thanks a lot.

### Reply 1:
You're not the first person I've said this to, and you won't be the last. If you can't see from the code how it's supposed to work, then you shouldn't be trying to run it. It's not a double-click and run program. It's more a framework you have to build a pool around.

",[]
14512,"Date: 2011-10
Topic: Lowest W PSU I can use with two 6990s?
### Original post:
Lowest PSU I can use with two 6990s? 80+ bronzeMy options are 650, 700, 800 and 850. Thanks.

### Reply 1:
<link>

### Reply 2:
if you can afford 2 6990's. then I suggest spending the 250 for a good 1200 watt psu. The PSU is probably the most important piece of equipement for a mining rig.

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    ""hardware_name"": ""650 PSU"",
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  },
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    ""hardware_name"": ""700 PSU"",
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    ""hardware_name"": ""800 PSU"",
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    ""hardware_name"": ""850 PSU"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""1200 watt PSU"",
    ""hardware_is_owned"": false
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]"
6841,"Date: 2013-12
Topic: [Block Erupter Blade (New Model)]Low Price, Limited Quantity
### Original post:
great news,what is the price for Block Eruptor Blade in INDIA through Pinwheel?? any estimates will be fine.

### Reply 1:
Is the picture accurate? Are you using 32 chips to get 10GH?

### Reply 2:
Smells OverpricedSmells Underpowered

### Reply 3:
How many do you have in stock?

### Reply 4:
again .. no price ...

### Reply 5:
And this time no overclocking capabilities

### Reply 6:
I imagine... 32*.336GH= 10.752GH

### Reply 7:
4BTC here: <link>

### Reply 8:
Seems like a lot of unnecessary expense... 32 chips vs 3-4 from other concerns for the same hash rate. I can't see get 10x as many chips for the same or less money.

### Reply 9:
Please show me where you can get brand new ASIC miner delivered to you in a week.

### Reply 10:
Ah, yes, you can have it now, you just get $^%&#^ in the process. It's been true ever since May 4th when the 1.99BTC erupters came out, why should it be any different now? Spare me your sanctimonious crap, it's still highway robbery.

### Reply 11:
You're saying you can get 10x less chips for same hashrate and same money. I'm saying you can't. I am right, you are saying bullshit.

### Reply 12:
Huh? How is 10 GH/s for 4 BTC delivered immediately highway robbery? That's the same price as a BFL pre-order due to ship in ""2 or more months"".

### Reply 13:
Come on dude, it's not like you are forced to buy these. If you don't like the deal, you just don't buy. Nobody robs you.

### Reply 14:
I cannot get them right this second or this week, no. But that still does not make the prices not highway robbery. None of the USBs will ever earn the BTC spent on them. This unit may *barely* make the BTC cost back, but that's only if more and more of the other companies default and don't ship on time. You can paint it any way you like, it's still highway robbery.

### Reply 15:
They look so...Blue?

### Reply 16:
Everyone says they need to inform the clueless about BFL's practices. I am only doing the same about these. If you shout down the logic you are condoning the practice of ripping people off for profit. If people have been warned and still buy, then there is nothing I can do but say ""I warned you"".

### Reply 17:
So you agree BFL prices are highway robbery too. Why would you keep an order with them if you consider it highway robbery?

### Reply 18:
Does it operate with CGminer and P2Pool, or same embedded software as in ""old"" Blade?

### Reply 19:
How noble of you, but you seem to be going through contortions of logic in an effort to ignore the glaringly obvious.If a customer receives the product ordered, in the condition described, at the price agreed upon, delivered at the agreed upon time...then there is no robbery...highway or otherwise. Whether this is a good deal or not and whether it will provide a positive ROI is open for debate, but calling this ""highway robbery"" is ridiculous and makes you sound rather silly.

### Reply 20:
I'm looking at this as ""100 GH/s for less than 40 BTC"" and am seriously thinking of pulling the trigger. Have an inquiry in with one of the resellers.

### Reply 21:
yeah I hear ya, its one of the best deals out there atm and u can get the HW within a week or <truncated> a chance of it actually making ROI....

### Reply 22:
There's really no point for anyone to buy anything ASIC related. Really. The chips are so cheap to produce but have incredibly levels of markup, no one will turn a profit save for the people selling the shovels. Everyone loves to whip on BFL, but the fact is if their gear isn't profitable, absolutely no one else's is either. It's essentially games over time; the difference between production cost and shipping price of Asics is too great, enabling a huge flood of chips to the market that make it impossible for anyone to earn a return. So what do we do now? Beg for higher btc prices to save the system? Hope that people run unprofitable operations so that transactions can process? I don't know an answer, but its clear to me that the evolution to Asics was one of greed only (no, it never was about protecting the network), and now it threatens to take down the whole system. No one even has a clue how much hashing power is in the fabs right now. It's impossible to build any form of projections without that simplest piece of information. I'm sorry, but there's no way that I can see this situation being explained to actually be a positive for the coin...

### Reply 23:
Since my opinion has not changed since I made my purchase, why should I demand a refund when I knew the story before I bought? *I* knew I'd be using my GPU regardless of the electricity cost just as I'll be using the Jalapeno regardless of the return. *I'm* not buying with my eyes full of $$$$ and I could care less about short term RoI. I made an investment, and in the long run, I believe my investment will pay off more than yours. I barely had 2BTC in hand back in June, instead of sp<rest of thread truncated>
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10604,"Date: 2017-10
Topic: AP3W++ Died on me !!!!
### Original post:
Hi AllJust noticed an S9 OFF, AP3++ was dead, no 12v Out !!!I noticed little fan had stopped...Its starts with a 'quick flick' ...but still no output..I'm in the UK and wondering if it is worth the cost to send for replacement to BITMAIN ??I'm sure i seen a section where you can input serial number to check warranty ??OR is there an internal fuse on the output i could replace myself along with small fan ??Thanks

### Reply 1:
never never never never never buy a psu from bitmain unless you live in china.there are good psu's on uk eBay that would work.mailing or shipping it to bitmain is foolish cost = close to that of the psu.go here to read what to do<link>

### Reply 2:
This is so the right answer. the bitmain psus are TERRIBLE. I am talking 35% or more failure rate on large rollouts from brand new fresh out of the box APW3s

### Reply 3:
Wow, i have 12 of them, i searched Ebay and Amazon for a UK made PSU and could NOT find one !!! Cheers Guys

### Reply 4:
In the link to the bitcointalk thread there are PSUs on eBay.co.uk that are fully in stock and are much more reliable than the APW3s from Bitmain. Alternatively you can also cobble together your own server psu, breakout board and wire setup which could save you a few bucks.If you dont want to click so much heres one linked in that thread Phil talked about above:<link>

### Reply 5:
Yep, i've ordered a few mate, i have 5 coming from BITMAIN in November batch though, don't think they do refunds !!!!I also have a few 4k breakbout boards for DPS2000BB Server PSU's, Cheers....Now onto BITMAIN !!!!Hate having miners sitting idle, also have a few EVGA 1000w/1300w hanging around so will hook 2 of them up for now.Thanks

### Reply 6:
My apw blew a capacitor 5 minutes after powering up for the first time. I naively sent the psu back to bitmain at a cost of 35. So far its been 5 weeks and they still have the psu So lost around 350 worth of bitcoin on top of the postage back to China. Im still considering buying a psu and still being better off.On another note did you plug the psu direct into a wall socket? i thought this would be fine in the uk but after the psu exploding and the confusing directions sent with the miner im now concerned about safely setting this up at home.

### Reply 7:
I have several running with NO PROBLEM, looks like the the small fan on it broke (it does start with a 'flick)....I did open it but could not see any blown caps...Not going putting a meter on them either, For 97 i just purchased one from link above from UK...

### Reply 8:
I hate the gray market garbage that is being passed off as quality. Even still stick to purchasing from quality vendors. Sorry your AP3w died!

### Reply 9:
Only 100 for new one !!! Better than buying 1600w EVGA's like the old days !!

### Reply 10:
I must have insanely good luck then, over 40+ psu purchased and only 1 failed on me....

### Reply 11:
I've only had one die on me, i sent it off for repair (under warranty of course.) Most annoying part was the wait for repair, took way too long. What i would do is buy a new one AND send the defective one off for repair. That way you have a spare if another one kicks the bucket or you can sell it off to help offset the cost of the new one.

### Reply 12:
Since i am planing any time soon to buy S9 from Bitmain, i wanted to include Bitmains PSU as well, what other PSU you advise to buy instead of APW3?

### Reply 13:
Forum member Sidehack may have some PSU's available for sale

### Reply 14:
why oh why do you buy a psu from them? where do you live? what is your voltage where you live.only if you live close to china I can understand why

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16761,"Date: 2011-07
Topic: low hash miners: large or small pool?
### Original post:
does it make a difference for low hash miners (310mhs) if a pool has a very large hashrate or a small one? obviously blocks get solved faster with large pools, but the rewards are also smaller..

### Reply 1:
It probably has no effect on total rewards, but I prefer to join the small- to medium-size pools. It's just psychologically more satisfying for me to see rewards in .10 and .20 btc increments rather than .01 or .005 increments.

### Reply 2:
It doesn't really matter, in regard to how much you earn. I would suggest a small pool simply because it's better for the network if we spread out hashrate between many smaller pools than a few giant pools.

### Reply 3:
I feel similarly to this sentiment. Being concerned about ddos, pool failure, or a pool getting 'too large' crops up in my mind and draws me to the smaller pools.

### Reply 4:
come help grow my super small pool!

### Reply 5:
Take in account the current & next difficulties (1.3-1.6m).They are brutally hard for small pools in terms of variance. Sure, it evens out in the long term, which is months and years statistically.It doesn't even out in the short term. A single difficulty can change in 7-10 days.If your pool does under 50ghash/s, your earnings might drop to literally zero if the pool has bad enough luck (i.e. it might only find a single block during a difficulty level, or none at all)The larger a pool is, the better it's protected against massive luck swings caused by raising difficulty level & variance.Pool luck varies about 5-15% at the most on giants like Slush and deepbit. On pools below 500 ghash, there are daily swings upwards of 20-50% or worse.

### Reply 6:
Right, but this also means you have a chance at an unusually high payoff.Right, but I don't want to be protected from massive good luck swings.Smaller pools have more variance, that's true. That's good and its bad.

","[
  {
    ""hardware_name"": ""310mhs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""50ghash/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""500 ghash"",
    ""hardware_is_owned"": false
  }
]"
808,"Date: 2013-07
Topic: [GB] KNCminer Jupiter  #16 Sold [Added to 6 TH/s Jupiter Pool] 19/30 left
### Original post:
1 share pleasepayment complete and confirmed (2.45 btc sent)tx id = <truncated>

### Reply 1:
i hope miner #17 sells out quickly. shares of miner #17 selling so slow

### Reply 2:
1 shares<link>

### Reply 3:
Added to OP list, thank you

### Reply 4:
I don't want refund but if still no decision or no solution for giving the order quickly, please refund mine too.I can not accept waiting till 1BTC = 100USD

### Reply 5:
BTC/USD exchange seems to have stabilized at around $70 to $75. Have increased price per share to reflect this.

### Reply 6:
hi guys, this miner#17 would be shipped on day 1 delivery. its cheaper than buying expensive shares from early group buys. so its wise to invest here. come on, let this miner#17 be sold out asap

### Reply 7:
Day 1, huh? OK, I'll bite.TX ID: <truncated> Address: <truncated>

### Reply 8:
yup, i supposed its day 1, i heard that kncmining will try to include the orders of this group buy in day 1. am i right boss soniq?

### Reply 9:
boss, if the rumor (1st day delivery of miner #17) is true. then this group buy will be the most economical among the group buys present in this forum. approx 4.14 ghash/s of mining power per btc. if you can confirm this, i'll buy another share to help this miner #17 sold out asap

### Reply 10:
I can buy ""1"" or ""2"" another shares tomorrowplease reserve at least ""1"" share for me soniq...

### Reply 11:
boss, if this miner #17 is going to be sold out soon, reserve around 2 additional shares for me, aside from the 1 share that i already paid earlier. thanks.

### Reply 12:
@soniq:is this true or not?if yes, I'll buy more shares

### Reply 13:
i think kncminer will try to include this on day 1, but no promise.

### Reply 14:
Added to OP, welcome :-)

","[
  {
    ""hardware_name"": ""KNCminer Jupiter"",
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]"
2349,"Date: 2013-12
Topic: [GROUP BUY EU] #1 Bitmain Antminer U1 USB Erupter [ANN]
### Original post:
Watch!Waiting Prices!

### Reply 1:
.03 ~ .04BTC or don't bother selling.

### Reply 2:
Hopefully it wont be that pricey.

### Reply 3:
I'm in

### Reply 4:
reserved

### Reply 5:
I'll take 10 at BTC0.01 each inc P&P

### Reply 6:
I'm interested, but anxiously awaiting pricing information. Will also be interested in the S1, most likely.

### Reply 7:
I am currently discussing with the Bitmain people about S1 reselling. For now, I will only provide U1.

### Reply 8:
If the price is right I will take 20

### Reply 9:
i will take 10-20 units `depend of price.

### Reply 10:
Will take 10-20 units, depends of price.

### Reply 11:
I'm awfully anxious for a price... I'm interested, if the price is right. But this lack of price is actually bugging me more than lack of availability. Any word on when pricing will be announced?

### Reply 12:
Buying limit will be set after I receive the number of miners in each batch so that people can have a chance to buy them.

### Reply 13:
I will take 5-10 units, depends of price.

### Reply 14:
reserved 2-5 depending on price

### Reply 15:
Do you ship to the USA? Or will there be a USA seller?

### Reply 16:
Not sure about any US reseller... I will ship to US until there is one.

### Reply 17:
So... how much for the Antminer U1?

### Reply 18:
will take a couple depending on price

### Reply 19:
also interested in a couple if price is alright

### Reply 20:
Not sure yet. I will announce immediately when I receive any information regarding to price.Thanks for the interest by the way to all potential traders.

### Reply 21:
Already have usb ports waiting for some next-gen usb Erupters Agree with previous posts, all depends on the price, for 0,01BTC/piece i'm in

### Reply 22:
I'll get 4 or 5 if the price is right. Maybe even more, we'll see.

### Reply 23:
all i am waiting is for the price. Then I will start collecting orders. I prefer not to use escrow to increase the speed of the cash flowing. I am willing to provide personal details and such. pm me ifyou want. I do have ebay, 100% positive ratings. username: nixonpang98

### Reply 24:
Great news! I am currently discussing prices with Bitmain. I can guarantee that bulk purchases will be cheap! Will update again!

### Reply 25:
i'm in for up to 50@0.015 each

### Reply 26:
great news, might upgrade my wish to 10-20 then

### Reply 27:
Great news Waiting prices!

### Reply 28:
I will take 5-10 units, depends on price.

### Reply 29:
will the price be a fixed price in BTC regardless of the current value? I am also keeping an eye on this thread.

### Reply 30:
The btc price will be dependant on the exchange rate. Sorry for not adding that to the #1 post. will add now. Thanks

### Reply 31:
I will take 10-20 depending on price

### Reply 32:
So you discussed price with them, but do not have a price is that correct?

### Reply 33:
I would take 5 to 20. price will decide how many.

### Reply 34:
You have a group buy going for something you don't even have a picture of yet......

### Reply 35:
That is why I am not collecting any orders yet. if you dont like it, dont join. No one forced you to join this group buy.

### Reply 36:
Just a thought:With what software will these U1 work <truncated> they need a specific driver or work with the current ""zadig""?

### Reply 37:
Listen kid, no one asked you to be a wise ass. You want to sell me something.. Show me what I am buying and I will buy it. These guys said they were ready to sell.. Show me a picture of it is all I ask. Ive spent over $90,000 on equipment since june. You aren't the only show in town. Woo me so I spend my money with you.

### Reply 38:
They haven't provide any photos of the U1 usb, so how can you expect me to post a photo of it? I update this thread to date as much as I can.If you can't see any photos of the U1 in the announcement, don't expect to see any photos here.If I post a picture now, obviously it's fake since they have not released anything on USB yet.

### Reply 39:
Fair enough answer. Looking forward to seeing the thing. All they talk about is the big unit.

### Reply 40:
I do know some info about the rig. It should soon be released!

### Reply 41:
I also would be interested in several units depending on the price.My major hurdle would be the fact I am in the States. Do you have an estimate on how much shipping would be from the EU to US?Clearly the timeframe of these devices being useful is very small with the ever changing landscape of the block difficulity and waiting for a US reseller might take awhile.

### Reply 42:
I do ship to US until there is a us reseller, which I have no idea when. Shipping cost for 1 small pack of usb is around $18-20. Aims 5 days with insurance and delivery confirmation.Royal mail to be specific.Thanks

### Reply 43:
I will take 2-5, depending on price

### Reply 44:
looking at 30 to 50 units , depending on price and delivery time of cours<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Bitmain Antminer U1 USB Erupter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""next-gen usb Erupters"",
    ""hardware_is_owned"": true
  }
]"
16237,"Date: 2022-04
Topic: bad time or good time to buy asic miner
### Original post:
Long time GPU miner, first time Asic Miner... I moved away from mining eth, given the planned PoS move in June. Looking to buy an Asic miner, but from what I can tell, the ROI on most miners is 24 months min. 24 months is a lifetime in crypto, as well as the 24 months does not include diff increase over those 24 months. Am I missing something? Can anyone give me some suggestions on models that have a decent ROI? On one hand I can get myself an A 1246 Pro 87T, but i see some new units coming in July at 140T that will certainly raise the hashrate and increase time for <truncated> ?

### Reply 1:
Check the newer Bitmains miner which is the Hydro s19 pro+ according to ASICminer value you can earn 26$ daily the ROI would be around 1 year and it also depends on the price of Bitcoin. The difficulty increases from time to time so it depends on the price of Bitcoin if you can get less ROI reach or ROI more than 1yr. You can find other ASIC miners from asicminervalue.com if you are looking for a higher profit with less ROI but don't buy on their 3rd party sellers listed there only buy directly from the manufacturer or verified distributors.

### Reply 2:
I have a similar plan. I am going to buy up old-gen ASIC miners like the Antminer L3/S9/S15 in order to demonstrate a decent power demand to the utility. Since they're At 7/kWh, I know I won't make much profit with those, but I can get an immediate tax write-off and get a small warehouse started up in May/June. The point is to try to draw in a few initial smaller investors with the hardware they're already familiar with: ASIC machines, as well as start building a customer base by offering GPU colocation to people who have even 1 rig.I won't be able to compete with the 4/5 mega-miners on cost, but I can offer non-voting stock (not a mining contract) in a real company who's responsive to their needs and can give personal attention. Why stock shares? Because the tax benefits pass through to them, which is one way I'll differentiate my operation from the others. ""Instead of being locked into a fixed contract with this mega farm who's 4000 miles away, why not go with this little guy who's more likely to act in my economic interest by reacting quicker to the market?""By July/August, ETH PoS should've happened. Video card prices will crash. That's when I'll turn around to tell the investor<rest of post truncated>

### Reply 3:
Did you exclude the electricity price from your number? As per mining calculator, with s19 pro and electricity price like 0,06$ per KWh (which is a low price) you will earn 17,5$ daily. So even with low electricity price it requires 1,5 years of non-stop work (may be longer if you consider halving) of s19 pro that costs 9,5$k + probably some other expenses.So generally, OP is right. According to mining calculators, purchase of asic miner would pay off in about 2 years depending on your electricity price.Right now, crypto mining is not a free money. For single individuals mining profitability depends on upcoming BTC price. If it rallies anytime soon then your purchase pays off faster.Reported. Burn in hell.

### Reply 4:
Hard to tell where the crypto market will be in the next 5-6 months, so you can't really conclude if this is the best or worst time to buy. whattomine (<link> ranks ASICs from the estimated most profitable to the least at the moment, but the highest ranked are either out of stock from the official stores or not yet produced.

### Reply 5:
Yeah, agree if you have a high electricity rate the ROI will be more than 1year. Unless you have free electricity from solar or wind turbines. My calculation is from the total income calculated from asicminervalue.com which excludes the electricity rate but right now the total income for 1 year is changed due to an increase in difficulty and the price of Bitcoin. So the ROI depends on the price of Bitcoin, Electricity rate, and difficulty and I think extra expenses like maintenance. Adding this tool how long you will reach your ROI I tested it and the calculation is more than 2.5 years.- <link>

### Reply 6:
I would also include the price of the equipment in the calculation. During a gold rush, not only does your equipment make more $$$, but the value of the equipment goes up. Let's say you own a few Antminer L3++'s and DOGE boomed, so you made a killing. The DOGE price is starting to fall. You can make even more profit by selling your equipment, then using all the funds to buy hardware for other algos that aren't <truncated> during a bear market, not only does your profit margin get squeezed; but your equipment falls in value too. It's better to try to sell if the price has went downhill for 1-2 months and the momentum has ended.

### Reply 7:
That tool doesn't seem to take into account the halving in early 2024.

### Reply 8:
Video cards can work without breakdowns in mining for up to 7 years, but ASICs do not have such r<rest of thread truncated>
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  {
    ""hardware_name"": ""A 1246 Pro 87T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hydro s19 pro+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer L3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S15"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer L3++"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s19 pro"",
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]"
9592,"Date: 2015-12
Topic: Here's a converter that will turn your 120 volt US plug into 220 volt plug.
### Original post:
Was trolling on eBay and found these. Looks cool. It'll convert a standard US plug into 240 volt for the APW3. No need to install dual pole breakers to get your 240 volt line going. <link>

### Reply 1:
Cool, and it's only $200 and inherently lossy.

### Reply 2:
Its cheaper if you click around found exact same thing for $80 and $60 shipping. Still cheaper then wiring 240 at your home, or if you live somewhere where you can't get 240 volt.

### Reply 3:
In general, it would make more sense to try and figure out a way to work out a 120V solution instead of killing your efficiency even more by putting in a step-up (i.e. 120V --> 240V) transformer. For example two 120V power supplies instead of a transformer & 240V PSU.

### Reply 4:
Not to mention Chinese. Very Chinese.No, it isn't cheaper, and it won't give you any of the benefits of running proper 240v besides getting the bitmain PSU to power on. It's a very bad idea for mining.

### Reply 5:
Pretty cool. It looks like the you can plug the input into the output so if it is a dumb transformer you can do 2 units back-to-back and get 480V to play with. Three units would give you 960V!

### Reply 6:
960V!!!And the sickest death of all time. Seriously people, don't get shocked with 240V or more. Instant death is to put it lightly. There's a reason US went with 120V, and while I usually don't agree with lowest common stuff I can see why we went with it. When I was young I walked away with a 120V shock burned but OK. If I was younger and shocked with 240V or more I'd be dead. Dead.

### Reply 7:
Please don't post things when you're not 100% sure of what you're saying. Voltage doesn't kill, amperage does. FYI USA is 240v. It's simply a different ""type"" of 240v than Europe.I'd even go as far as saying 120v is MORE dangerous than 240v or higher. Getting stuck on live 120v wires can be worse because the low voltage doesn't ""blow"" you away, you can lose muscle control and stay clamped to the wire until you fry. Higher voltages will have a tendency to knock you back or off the wires more easily.

### Reply 8:
I know about how we get stuck to the sockets here in the US from stories and I think it was my body weight going limp and detaching me that made me survive. If this is the case, and I believe your right, then I'm 100% wrong.240V/480V might just shoot you out, thus causing less timeframe damage.Sorry if I was wrong about that and I'll stop giving info about a subject I know almost nothing about to be honest. All I could think of was 8X the Volts going into my body. But if it was more over a lesser time I can see how that could be better than less over a much longer time. Last thing I want to do is get any one hurt, and thank you for the quick correction.

### Reply 9:
120v vs 240v are pretty much equally dangerous.Both are well over the threshold to electrocute you, both have plenty of amperage, both are AC so they tend to ""vibrate you"" rather than having a 50/50 chance to blow you away like DC has (the other part of DC is the possibility to lock you TO the line).Transformers tend to be VERY high efficiency - 98% or BETTER is quite common if you're not throwing wierd waveforms at them.The input cord to these things look VERY VERY iffy for the current they're rated to handle - look like *maybe* 10 amp cords when they should be AT LEAST 25 amp rated for the wattage these devices alegedly handle.Cost is also fairly high - it's cheaper to wire up a 220 circuit, breaker and all, even adding in retail pricing on a 6-15 or 6-20 socket/plug pair.They also seem very very small for a supposed 2500 watt solution - I suspect that's an INTERMITTANT rating, not a continuous one like a miner NEEDS.I'd be very cautious trying to run a miner via one of these things, monitor the temperatures on them like a hawk on both the device itself AND the cord.

### Reply 10:
You'd be better off finding 2 seperate outlets on the different legs to make 220 & run them to a little box with a 220 receptacle Much cheaper & easier....but you'll have a cord or two running thru a hallway/rooms to trip over

### Reply 11:
Its much cheaper to just use a good 120v PSU, there's both ATX and server solution here. You're adding costs at no gain, you're adding a point of failure and i bet these things are prone to catching fire.You'll be losing efficiency, which you won't really gain back from using 240v PSU. If you have this much money to throw around, just get a P/T rated PSU for cheaper than this thing and you'll have more efficiency than 240v gold.

### Reply 12:
gives u the vlots but NOT amps ! that thing will either melt or blow up in no time.

### Reply 13:
Well it says 2500w, so running a single S7 might be doable, but in the best case scenario, you're raising your costs for nothing. I don't see a gain on using this and you're just adding one more iffy Chinese thing that can burst into f<rest of thread truncated>
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  {
    ""hardware_name"": ""APW3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""120V power supplies"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""240V PSU"",
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    ""hardware_name"": ""server solution"",
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    ""hardware_name"": ""P/T rated PSU"",
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    ""hardware_name"": ""S7"",
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  }
]"
22440,"Date: 2018-03
Topic: Any guide to understand the Kernel Log?
### Original post:
Hi Folks,Is there a guide or a post where I can get some coaching on how to read the kernel log to figure out the issues? Thanks.

",[]
11639,"Date: 2011-09
Topic: GUI Miner won't work
### Original post:
This morning when I turned on my computer I tried to start GUI Miner as usual, and it came up in the system tray and in the task bar when I clicked it with Windows 7 but I couldn't get the app to pop up on my screen. I restarted the computer and same problem. I updated to the latest version of GUI Miner and it still won't work. Any suggestions? Last night after I stopped my miners for the night to shut down the computer the computer BSOD as I tried to quit GUI Miner.I just downloaded Diablo miner but that app won't even open.

### Reply 1:
you said gui miner is running but you can't see it? maybe the position is bugged. find the poclbm.ini or poclbm.cfg (its poclbm.something, idk what it is) and change the postition to 0's. had to do it one, it was like 999999999 for some reason once. changing to 0's fixed it

### Reply 2:
Yes it runs but it stays minimized so I can't do anything with it at all. I'll do what you suggested when I get home.

### Reply 3:
if you have multiple video cards in your setup jump into display properties and tell it to use a single display... it might just be popping open on a card that you don't have connected to a monitor?

### Reply 4:
I had the same problem. Go to %appdata%/poclbm and delete poclbm.ini. Problem should be fixed now

### Reply 5:
Corrupt Open CL/APP SKD....I had the same problem and tried multiple miners before I found the problem.Uninstall the SDK, re-install and everything should be OK.To confirm this before doing anything, just open GPU-Z and it should open with an error telling you that there is an Open CL problem.Hope that helps,Allan

### Reply 6:
There is a fix for this it is related to poclbm.ini not being saved properly. Read the first post in the official Guiminer thread. or search forums for ""guiminer invisible""

### Reply 7:
here is the fixOpen up a guiminer and click elsewhere to lose focusIn the taskbar, left-click once on the Guiminer icon so it gains focusNow, press ""ALT-Space"" (you will see a menu appear were guiminer should be)Press ""M"" to choose the Move option (your cursor will now turn into four arrow points).Press any of the cursor keys once (this will move your guimineron the screen and it will be captured by the mouse)Move your mouse about and you will see the guiminer moving with itLeft-Click to ""drop"" guiminer onto your desktop

### Reply 8:
me too i cant see the windows. what a huge bug lolit also stopped mining for some reason

### Reply 9:
on taskbar hover over its icon to get preview, then right click on preview and maximize.

","[
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""video cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""monitor"",
    ""hardware_is_owned"": false
  }
]"
12260,"Date: 2013-04
Topic: mgpumon standalone
### Original post:
<link> site says that you can run mgpumon on another system with a sane perl installation, i got 3 BAMT running but i can't located the needed files for mgpumon, i want to start it on my vserver and let my local nodes report to it.Anyone done this before?

### Reply 1:
I got it running, copy /opt/bamt/mgpumon to your internet machineCode:apt-get install <truncated> <truncated> libcurses-perl libjson-perlcreate mgpumon.conf, set the output dir, make sure that directory exists and is reachable by your web configurationCode:{ ""screen"": 0, ""gen<link> 1, ""<link> ""/var/www/monitor"", ""<link> ""index.html"", ""<link> ""mgpumon.css"", ""debug"": 0, ""listen_port"": 54545, ""monitor_temp_hi"": 80, ""monitor_temp_lo"": 45, ""monitor_load_lo"": 90, ""monitor_hash_lo"": 100, ""monitor_fan_lo"": 1000, <truncated> 3 }copy mgpumon.css + bamt/ from /var/www to your webserver, bamt/ has to be in the domain root folderscreen ./mgpumon mgpumon.confchange bamt.conf on <truncated> 1do_direct_status: mgpumon server ipDone.

","[
  {
    ""hardware_name"": ""BAMT"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""vserver"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""webserver"",
    ""hardware_is_owned"": true
  }
]"
826,"Date: 2013-07
Topic: [OPEN Group buy] 1000 pcs USB Erupters - EU/International - price 0.89BTC
### Original post:
Cmon people look alive, lets get this thing going, replace your ""outdated"" gpus, with this price its a win win situation. Get rid of the heat and high power bills. For a comparison:AMD 7850 - 330 MHs, 110w, costs 100 eur from ebay (used), uses ~ 960kW per yearUSB Erupter - 330 MHs, 2.5W, costs 50 eur (brand new), uses ~ 22kW per yearAt the average cost of 10 cents/kW it is a difference of 94 euro (120 USD) per year only in electricity, so however you are calculating it, the erupter wins

### Reply 1:
gapthemind - if you are watching this, send me your address and stuff...

### Reply 2:
We have one more announced buy of 20

### Reply 3:
So we send btc to your adresse then send a signed message and you ll contact us in future to send shipping feesam i all right ? regards,laurent

### Reply 4:
Yes, that is correct, I choose to do that because I cant predict how much will btc be on th day of shipping, and sadly the post office dont take btc (still )

","[
  {
    ""hardware_name"": ""AMD 7850"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB Erupter"",
    ""hardware_is_owned"": false
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]"
7347,"Date: 2014-03
Topic: IN STOCK AND SHIPPING - OneStringMiner boards; lower prices as of March 21st
### Original post:
The prices as of March 21st:Product #boards GH/s outside EU price in $ price including VAT inside EU price excluding VAT for business ownersOSM DIY0 1 25+ $210 183 1512x OSM DIY0 2 50+ $369($51 advantage) 323(43 advantage) 267(35 advantage)3x OSM DIY0 3 75+ $528($102 advantage) 461(88 advantage) 381(72 advantage)OSM DIY1 1 30+ $220 193 160OSM DIY2 2 60+ $400 349 289The Elite is currently out of stock.The price list with DIY0 prices a piece:Number of DIY0 setsoutside EU priceprice including VAT inside EUprice excluding VAT for business <truncated>

### Reply 1:
You know what I love? Paying on Tuesday, and having my OSM units in hand and hashing on Friday, all the way from across the ocean.You know what else I love? Lots of parts included! Cords, screws, spacers, fans all included, so I don't have to hunt all over for some little thing.And they're tiny, and as silent as you want them to be.And, oh yeah, all in the neighborhood of ~1W/GH/s. I will run these forever. Thanks again!

### Reply 2:
You're very welcome and thank you for the compliments.I guess it shows that I am a DIY too.

### Reply 3:
I have just received it and i try to get it work because i am new in this. I have some noob questions . First i have this psu<link> i think is in always ""OFF"" condition and to turn it on you must attached to a motherboard . How can i work psu thinking that is attached to a motherboard to be always on?. I have found this instructions but i dont know if is correct<link> other questions is that in the miner package was two wires that i dont know the use of them. One other is that the board has two molex. In which one i have to plugged the power? And the last question is that in the board i see a three pin connector for the fan and in the opposite side a four pin connector that i dont know for what is this. Thank you for any advice

### Reply 4:
connect green pin to black pin on atx connector and off you go!!

### Reply 5:
ok thx! Can you answer and the other question for the cables that come with the board etc.

### Reply 6:
+1 Ben has it dialed in. This is good for the community.

### Reply 7:
Do people who pick up these locally get a discount? Since you don't have to pay for shipping costs? I'm not far away from you so that is an option.

### Reply 8:
Just sent an email to sales@btcguru.eu to order 4 boards. This is the correct email to order?

### Reply 9:
I can give you a little discount, shipping cost is not much for us since we're shipping a lot and we have negotiated a nice deal with FedEx.Just email your order, specify local pickup and I will get back to you with an invoice that shows your discount

### Reply 10:
Perfect power supply, can easily power 20 boards and probably more.And those instructions are correct, connect green to black and the psu will work.Those two wires are only needed when you have more than one board.The black/red wire is for power, and utilizes the green screw terminals on the board.The other wire is for serial communication, for which we're fine tuning the firmware at the moment.The four pin connector is for the serial communication. Once you have multiple boards and the firmware is finished you will use that connector.For now we're supplying USB cables for every board purchased.

### Reply 11:
Yes, we've received your order, thank you

### Reply 12:
Thank you for the compliment

### Reply 13:
Absolutely loving my 2 DIY0 each running at 28 Ghash. And nary a whisper is louder than the fans I'm using2 questions for you Ben. Any update on the Version command error I pointed out. And one open to the floor but directed at Ben and cscape: is it ok to run these long term at 70-75C?

### Reply 14:
The higher the temperature, the quicker the chips will wear out, but I don't have hard figures about the expected lifetime at different temperatures. (I don't know that anybody has ever done a thorough characterization) However, considering that the reward of mining goes down as the difficulty rises, I would expect the optimal to be closer to 70-75 than to 50-55. But that's just a WAG.

### Reply 15:
Luke, I'd like to take this chance to publicly apologize about the somewhat rude criticisms i posted. i did not do my due diligence in ensuring that what i was posting was truth before doing so.

### Reply 16:
Unfortunately my old psu is off. It has problem and i though i can make it work but i cant. For that i must buy a new one. I see that each board needs 25w to work. What is your opinion to choose a cheap 550-600w psu or a good 400-500w. I think in the next months to buy more boards. Thank you for any advice

### Reply 17:
How many boards?A decent quality 4-500w psu should be good. Just make sure and double check how much of that wattage is 12V railsEx I've got a thermaltake TR2 430W 12V1 is 17amps and 12V2 is 18ABut what it didn't say on the box was that 12V2 was and eps 4+4 connector. <rest of thread truncated>
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    ""hardware_name"": ""Miner package wires"",
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    ""hardware_name"": ""Molex"",
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    ""hardware_name"": ""Three pin connector for the fan"",
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    ""hardware_name"": ""USB cables"",
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    ""hardware_name"": ""2 DIY0"",
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    ""hardware_name"": ""Old PSU"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""550-600w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""400-500w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Thermaltake TR2 430W"",
    ""hardware_is_owned"": true
  }
]"
11064,"Date: 2021-12
Topic: CANAAN AVALON MINER 1166PRO (81TH)-Questions regarding MINER LOG & MAXIMUM TEMP.
### Original post:
The frequency is not manually adjustable for this miner,so does it matter?Your current temps look ok.

### Reply 1:
""The frequency is not manually adjustable for this miner,so does it matter?""- Understood, the frequency is not manually adjustable, but we are still wondering how frequent the Avalon 1166 PRO calculates temperature. ""Your current temps look ok."" - Thank you, but do you know what's the maximum temperature?Thank you

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]"
8788,"Date: 2015-01
Topic: Selling Loads of hardware + ipads + PS4
### Original post:
Hi pplI have been a registered mining company in the UK for over a year now.My company is now finished as I cantcontinue operations.I am selling every piece of hardware,stock and crypocurrency I have.The good ride is over for me it'stime to sell up and everything is going cheap so I can try make something back . Here is my site<link> have been trading and mining under the company name cryposink LTD for the last 12 months and are in the process of dissolving everything.The site will except bitcoin payment and ripple, people may contacted myself and we can do a deal for GBP ,I can be contacted on sam@aplexfarm.com , been selling hardware for around a month but I need it all gone now !Everything must be sold and gone by the 15/01/15Obviously there is a million people who have questions , you may begin belowIf i'm not online someone will will reply at sam@aplexfarm.comI understand how it looks , here is my registered company information number SC466924This is my second account here I forgot the login information for the first account , no big deal had very little postsNo scam , just need sales. . . hopefully people can do some research first . cheers

### Reply 1:
SCAM SCAM SCAM!Buy at 100% risk!

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18648,"Date: 2014-01
Topic: Unusual behavior running cube miner in pools
### Original post:
I wonder if anyone can shed any light on this - I'm running a single block erupter cube to mine bitcoins and on high clock it will run about 38 GHs using mining_proxy.I've tried a few pools, but have mostly used the Eclipse Mining Consortium. With that pool, the console always shows ""accepted"" as the output with no glitches and both the miner and their website report my speed at 37-38. One thing that has happened twice now though, is that the website will stop accepting my shares at some random point a few days apart (and thus I'm not getting any income) and my graph and hash rate on the pool website drops to zero. Meanwhile, looking at my miner, it's still running at full speed and the console keeps saying <truncated> just as before. Are they trying to rip me off by doing this, or is it a temporary pool site glitch that gets corrected later?When that happens, I've been switching over to 50btc.com which runs consistently. The problem I have there, though, is that my miner will only reach a speed of about 34-36 (on my miner tab itself) and a few percentage points less efficiency. Also, every few minutes on the mining_proxy console I get a bunch of lines ""transport exception"" ""discon<rest of post truncated>

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21773,"Date: 2017-11
Topic: S9 hashing board lost some asic. Led still red...But not working advice needed
### Original post:
Like the title says. I have a few (37) S9 running. This is my first failure like this.Reed LEDs all solid (see pic)Dashboard shows asics missing, no temp reading,and insignificant hashing.<link> switched around the power leads. Restarted with fresh firmware Etc. Now 99% sure this is a warranty replacement. Kills me to send a whole Miner back in the middle of this Bcash/ BTC Civil War. Any ideas from you guys?

","[
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23096,"Date: 2019-10
Topic: S9 Hashboard diagnosis help
### Original post:
I am starting to learn how to fix these boards, hope this is the right subforumI'm hoping someone can give me a pointer where to look next. I feel like something is messed up with a 1V8 line *somewhere* but I can't really pinpoint it.Symptoms (Hashboard 63 V1.9) :Board is not detected - I believe the kernel log showed ""can't find sensors"" and it hangs there.I measure .772 V to the base of Q86 (The 1V8 -> 3V3 level shift transistor for RX)This is ~1.7 V on a good board. Audible clicking from the power supply section. (Assuming one of the switching supplies - but don't know which.) Both 14V (14.32) and 9V (9.2 V) appear.Makes me believe something is loading a supply somewhere. I am reading .464 V on the RI testpoint near IC 2. (The third one in the chain - on what I believe is the 1st voltage domain). ICGoodBad01.6 V0 V11.6 V0 V22 V.464 VDoes this pinpoint IC 0 & 1 as dead? When I compare RI resistance to ground I get roughly 200k on both good and bad. Side question: Where the heck is 2V5 generated?thanks for any nudge in the correct direction

### Reply 1:
i pulled off all the heatsinksthat was some HOT fun. now i can understand the design & layout much better. i also pulled off the first 2 ASICs, that I thought were maybe shorting something to ground, but that did not help.the buck/boost still makes noise. more investigation.Just out of curiosity, how many versions of the S9 hashboard are there?Edit Update: Found one of the 1V8 regulators putting out 1.5V and pulled the ASIC near it, and that seemed to make everything happier. No more noise from the switching supply. Now I'm debating if i want to put new BM1387 on there or just chalk up the board for more experimentation.

### Reply 2:
S9 , S9k , S9i , Sk , S9E each of these have different ""looking"" hash boards, I am not sure about the structure design and current flow but these are different from one another when you simply look at them with your bare eye, in fact even the S9 itself has 2 different hash boards.But as far as Chips are cornered, here is how they are grouped.S9 and S9i > same chipS9j > own chipS9k > own chipS9E > own chipas for the last two , someone mentioned that both have the same chips, but I am not sure, the boards look completely different, heat sinks on the S9E look fairly large , which makes me think the chips are different , unfortunately the last two models are pretty new to the market and I doubt anyone has gone to the extent of changing a chip on them.Talk about design, I got something for you.The above diagram explains how the signal follow within the hash board, it should give you a better and simpler understanding , if you have problem determining what the colors stand for, feel free to ask and I would explain.

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    ""hardware_name"": ""BM1387"",
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    ""hardware_name"": ""S9 hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9k hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9i hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Sk hashboard"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9E hashboard"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""chips"",
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11393,"Date: 2011-05
Topic: ‘GUI’ miners for Mac (Diablo GPU and RPCminer CPU)
### Original post:
I keep getting the response:even though I have the password and username set in both the bitcoin.conf and the plist file for DiabloMiner. Help?

### Reply 1:
Thanks for making these easy to use packages! I seem to have run into a snag though.When I try to run RPCminer on my 10.5.8 Macbook it tells me:""dyld: unknown required load command 0x80000022"" apparently from <truncated> line 62Any thoughts? Or is it because I need Snow Leopard?

### Reply 2:
good evening. thank you macCompiler for taking the time to make this application for us who are a little shaky in terminal. you are the first person that i will be giving my bitcoins to. as soon as i can make some. have a bang-up day.

### Reply 3:
I assume you are trying to setup a local server? The error message says that the username is entirely missing. Try reconfiguring by pressing Y + Enter during the first seconds of the application startup. When connecting to a local rpcserver, the username and password you set in the client must obviously match.That is a probable cause. I have access to some Leopard machines at work. I will test and have a look at what I can do about it. Thanks for reporting the problem.Youre welcome. I wanted to make these small helper scripts based on feedback I got from compiling the first rpcminer binary. It was obvious that Mac users didnt know how to use the command line. If enough people download these tools I might even make a full blown Cocoa application front-end. Keemem donations coming.

### Reply 4:
If you wanna use full urls, use -l <link> you should also include the donation addresses for all the miners you support with your script.

### Reply 5:
Sorry, but RPCminer doesn't seem to be beginner friendly or have a GUI (as I know them). Maybe they're friendlier than the alternatives. Thanks for the effort, though.

### Reply 6:
OK, I'm gonna look lazy and/or stupid here... but,I don't know how to answer the questions asked by Terminal when I launch the GUI Diablo.I want to use my Slush's account.What is the answer to Server host name or IP address? and port? and so on (I didn't get passed the port???)? Is this local info, as in off my computer? or BPM info from the site?thxand sorrylakehead

### Reply 7:
The phoenix miner works just fine on mac if you install the prerequisites. It also seems to miner a little faster than Diablo, at my on my rig. Having a UI for it would also be great.

### Reply 8:
OKNow, where do I find instructions for using phoenix miner on a mac? Where is the Mac app? source? I don't know.Lakehead

### Reply 9:
<link> the source code version and install the python prerequisites. Python should be already installed on your mac.

### Reply 10:
Thxgot it working and it is dead simpledoes 35000 khash/sec seem right?lakehead

### Reply 11:
Is there a way to get the plists to be stored in the same directory as the application, instead of inside <truncated>

### Reply 12:
another noob qwithin 20 minutes, Terminal is telling me I found 12 blocks??? can this be right? or is this the entire pool?lakehead

### Reply 13:
Not at the moment. The miners use Mac OS User Defaults API which decides on where the preferences are saved. If I ever do a Linux port of these scripts I will probably use something more generic.

### Reply 14:
Shares are diff 1 blocks, the miner can't tell the difference.

### Reply 15:
I don't get it?Shares vs blocks... The miner can't tell the difference??So I'm getting shares and not blocks. Yes??Lakehead

### Reply 16:
I'm getting a good percentage of invalid blocks found on a Radeon HD 4870 on Diablo. Is this normal?

### Reply 17:
Sounds like pool failure. Always double check using a local bitcoin installation to rule this out.

### Reply 18:
So I have it working. Two questions:I get an error:[5/20/11 11:03:07 PM] ERROR: Invalid block found on ATI Radeon HD 6490M (#1), possible driver or hardware issueAnd second, the output shows two numbers 13600/14000 (changing of course). Is my total hash rate both of those combined?

### Reply 19:
Ahh, that. That usually indicates the hardware is overheating, damaged, or the driver sucks.The two numbers are 15 sec avg/forever avg.

### Reply 20:
Yeah, that's what I was getting consistently. Hopefully it's just ""the driver sucks"".

### Reply 21:
Check your GPU temp, it shouldn't exceed 75c on anything mobile or anything nvidia, or 85c on non-mobile radeons

### Reply 22:
It's a stock Mac Pro setup, so that'd be fresh! I don't even know if they have the temp sensors on the GPUs inside these rigs. If so, should Hardware Monitor or iStat be able to read the temps from inside Mac OSX?

### Reply 23:
Dunno, I don't use OSX.

### Reply 24:
iStat does, they update it with every hardware release for the new sensors.

### Reply 25:
I think there is a bug. I enter port 8337 and it always corrects it to 8332 and fails to connect.

### Reply 26:
hey, don't bother if it's too much w<rest of thread truncated>
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    ""hardware_name"": ""Radeon HD 4870"",
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17096,"Date: 2012-04
Topic: More than 2 gpu's in linux
### Original post:
Hi!I've got 4 computers mining. Each has identical cards.Currently I have 5x6770 of the same brand/type, 2x6970 and 2x5970. (more cards are coming...)All my motherboards have at least 2X x16 slots (one has 3 of x16), and 2-3 PCI-e x1 slots. I've bought PCIe risers / extenders (converters) from eBay, which will convert the x1 slot to x16 connector.If I use this converter even though if I short the specific pins on the x1 socket, the cards won't work.Sometimes they get recognized in linux ""lspci"", sometimes not.Ati driver won't work with them, shows get clocks failed.Also, I have a motherboard with 3X x16 slots, and with that only 2 cards work.The riser cables are good, because when I use them with x16 slots, with only 2 cards, they work without any problem.Anyone had the same problem and was able to get it to work? Is there a trick to use more than 2 cards?I'm using ubuntu 11.04 with ati sdk 2.1 and 2.4I'll try this with linuxcoin, would that help?But on 2 of my machines I need to use ubuntu, so I need to resolve this to be ready & working when the new cards arrive:)

### Reply 1:
Dummy plug maybe? I thought Windows only had this problem

### Reply 2:
sudo aticonfig --adapter=all --initial -f

### Reply 3:
Hey, just for you to know, the aticonfig tool is broken. It never displays clock for me if more than one card is present.Also, to your problem with only two cards working: be sure to run aticonfig after you added a card. Is the third card show in lspci?I recently had problem with version 12.3 of atidrivers, that aticonfig --adapter=all created xorg.conf for three cards on machine with only single card. I needed to delete the other two by hand. That leads me to an idea, that you could try to add your third card manually:In /etc/X11/xorg.conf should be something like:Code:Section ""Device"" Identifier <truncated> Driver ""fglrx"" BusID <truncated> lspci says:Code:01:00.0 VGA compatible controller: ATI Technologies Inc Juniper [Radeon HD 5700 Series]Notice, that the BusID is actually the same number what lspci says. Just create a third ""Device"" entry in you xorg.conf with third pciid and see what happens.Note that this will only work if your problem is faulty aticonfig, as it was in my case. If your card is not even shown in lspci, the problem will be somewhere else. I've heard stories that some server boards have modified something that makes them not to accept graphics cards... Or simpl<rest of post truncated>

### Reply 4:
Ummm... no, I really believe it's some user error on your part.You REALLY want to supplement the aticonfig --initial --adapter=all command with the -f flag, otherwise aticonfig will only modify your current xorg.conf if it appears broken.Naturally, adequate (root) privileges are required to modify the file.

### Reply 5:
This.If you don't need ""-f"" includin it won't hurt. If you do need ""-f"" excluding it will cause all kinds of weird issues.I always use:Code:aticonfig --adapter=all --initial -fif not running as root use a sudo.If using a USB drive a sync (or sudo sync if not running as root) is a good idea to make sure filesystem is up to date before rebooting.Never had any aticonfig issue that a rebuild with --initial -f didn't fix.

### Reply 6:
Death, when using USB drives add these two lines to your .bashrc file(1) and never worry about issuing the command by hand:alias poweroff='sync ; poweroff'alias reboot='sync ; reboot'Notes:(1) and to /root/.bashrc as well

### Reply 7:
I am lazy. Often with a hung or crashed rig I just flip the PSU power switch off and on (with BIOS set to always power on after AC loss). So I will stick with a manual sync just to be sure. Still I intend to move to a PXE solution eventually (too many things to do) which makes it moot.For people who do it ""right"" that is a useful feature. I didn't realize you could make an alias of an existing command so I learned something. Makes me wonder why the developer of BMAT uses the non-intuitive commmand ""coldreboot"" (which IIRC does some housekeeping before rebooting) instead of just aliasing ""reboot"" and ""poweroff""? Maybe he was unaware of that too?

### Reply 8:
Yeah, maybe it is. But it happens on multiple machines with different configurations, even on the same machine if I add/remove card. I have spent a lot of time researching why, but just gave up. I blame this to aticonfig. cgminer shows clock correctly. Aticonfig doesn't. In the same shell & environment. Maybe I should add <truncated> but I don't know it and don't really care anymore :-)

### Reply 9:
No darker magic. When you change cards you need to rebuild xorg config. The --initial param ONLY changes xorg for the sections which are invalid. If they are valid but wrong (like when swapping cards in and out) it will not make ANY change to that section.""-f"" forces a change. It makes aticonfig blow away the entire xorg config file and rebuild it regardless of it is valid or not on the next <truncate<rest of thread truncated>
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20248,"Date: 2015-02
Topic: Issues with stats and hosts
### Original post:
Hi everyone and thank you for reading,I was redirected here to ask my questions, so here it goes.I am new at this; just set up a couple of computers some days ago and started mining. Im as excited as when I set up my first BBS when I was a teen, more than 20 years ago. SmileyAnyways, I am trying to figure out those two issues :1) I dont see any stats showing up on my ""workers"" page. I have 4 computers running right now and 4 workers. I had success once for some reason and then nothing... heres a copy paste below :Error 500.0 Mh/s macbook --- --- --- --- --- ---Error 5.000 Gh/s station01 --- --- --- --- --- ---Error 500.0 Mh/s station02 --- --- --- --- --- 16 hours, 44 minutesError 500.0 Mh/s worker1 --- --- --- --- --- ---2) I have to use <truncated> and <truncated> will not start. I am just wondering if Im doing something wrong. Below here is a copy/paste of my log. Also, I am using Guiminer for its ease of use. Once it is started everything goes smoothly, but as I said, I dont get any stat updates.If this is a repost of an existing thread feel free to redirect me. Every help is appreciated and I hope to contribute myself some day.2015-02-25 16:26:15: Running command: poclbm.exe <<rest of post truncated>

### Reply 1:
On GPU era, we use ATI not NVIDIA. NVIDIA not good at mining.Now GPU era already ended dude. You just wasting the power without getting any shares.That's why you got nothing on the stats. Today you need asics for mining.

### Reply 2:
Thank you, I thought about investing in Asics. Especially since electricity bills are not that expensive here in Quebec. Though, I just thought about putting my files/test/etc servers to good use.Thanks again,-Aethernam

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14273,"Date: 2011-06
Topic: Motherboard with onboard video
### Original post:
I do have a motherboard with onboard too (Gigabyte GA-MA78G-DS3H) and I can't use two cards. My second PCIe slot does not work with video cards. Either it activates the one in the first PCIe slot, or the onboard if its missing. I don't know about your specific mainboard, but I needed to buy a new one.

### Reply 1:
Hi,I, considdering buying an ASRock <truncated> But it has onboard video. The wiki: <link> claims mobo's with onboard video gives problems.Anybody expierience with this mobo er other with onboard video? i it works this is an ideal mobo.Specs:<link> 2x ASUS EAH5850 DirectCU/2DIS/1GD5 <link> AMD Athlon II 250psu: Corsair Enthusiast Series TX750 V2 <link> in advance.

### Reply 2:
Have you tried crossfire?

### Reply 3:
Have you tried dummy plugs?I've heard many people use the onboard video to drive the monitor and use the other slots to mine. It's supposed to speed up mining as doesn't have to draw the screen.

### Reply 4:
I did 2 seperate monitors to each of the card. But even with only 1 card connected to the second PCIe slot, it does not even start (fan goes to 100%, long beep from bios and black monitor).

### Reply 5:
Is that long beep a POST code? You should look up what that means.

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    ""hardware_name"": ""Corsair Enthusiast Series TX750 V2"",
    ""hardware_is_owned"": false
  }
]"
21060,"Date: 2016-06
Topic: Bitfury rig suddenly stopped working
### Original post:
Please help.Bought a used Bitfury rig (original M-board) that ran without problems for the last few weeks, mining bitcoin through BTC Guild.Tonight, while the rig was running, I changed the pool configuration to the D7 mining pool (Peercoin) to see if it would work. Instead, the noncerate immediately went to 0. I restarted the Pi, changed the pool configuration back to BTC Guild, started the miner...and nothing happened. Noncerate is 0, Bank 1 is at 0, and BTC Guild is showing 0 for my worker.Did I somehow break the rig? Please let me know what I can do.Thanks very much.

### Reply 1:
Sure the rig is fine. Just the software has got confused. Anyone had similar issue and fixed it?

### Reply 2:
Thanks for the encouraging words. Though I should add stats.log is showing straight 0's all the way across, except for speed, which is set at 55.I shutdown the Pi, removed the H-board and put it back in, and still nothing. Not sure what else to do...EDIT: Crisis averted. I think something's going on with BTC Guild, because it's mining fine at D7 right now. Thanks for the help.

### Reply 3:
I have 2 miners as well and they have both stopped working about the same time as yours. What did you do to fix them?Thanks for your helpRandy

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    ""hardware_name"": ""H-board"",
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22315,"Date: 2018-01
Topic: Antminer S9 on 110v with APW3++
### Original post:
I was expecting the S9 to arrive in Jan 2018 but it arrived much sooner (yay! ). Problem is I'm not prepared yet to power it at 220v as is suggested for the APW3++ power supply. For the moment I only have 110v.If I were to attempt to power it using 110v would it result in damage to the miner/power supply? Or would it simply run at a less efficient rate?

### Reply 1:
Dont do it, you will have problems. Even if you get it to start hashing on the PSU it will be overloading the power supply very badly. What you can do for now is hook it up to 2 of the hash boards and the controller and run it on 2 until you get the proper outlet setup for it.

### Reply 2:
It may work, but you can also burn your power supply, with some extra bad luck your miner could go down with it. The failure rate of these machines is already high (meaning they are pretty low quality) so I wouldn't push it beyond specs. If you really can't wait for your 220v installation you could buy a 1600W 110V PSU (and then resell it, return it, whatever).Edit: And yes, use only two boards is an option too, that's how I'm running mine but just because one board lasted only 4 days...

### Reply 3:
power two boards and the controller.do not power the center board.you will get 9th instead of 13.5 th the psu can do that.

### Reply 4:
Great, thanks all.One last quick question. The included documentation says the total current at the wall for an S9 is 20A. Is that correct, it seems a bit high? Wouldn't it be 14A? Or am I missing something (ie. power factor is not 1)?

### Reply 5:
It pulls around 6.5-7 amp at 220 so around 14 on 110 is right. If its pulling 20 amps id say grab a fire extinguisher lol

### Reply 6:
yall are wrong. the power supply does both input voltages plug it into 110 it runs fine. this is from bitmains page.2. The APW3++ can deliver a maximum power of only 1200W if it is connected to a 110V mains power supply. To obtain the rated power of 1600W, the APW3++ must be connected to a 220-240V mains power supply. Please check the mains power supply that is the standard in your region before ordering. you can go to lowes and buy a 6-20R receptacle and 6-20P plug if you want to wire it up for 220v its smaller than a dryer plug in.I have been told that it will most of the times still hash at 13.5 ths even on 110v.this is out of the s9 manual.The miner does not contain a DC/DC converter; therefore, higher input voltage will cause higherMining efficiency .or read this <link> Voltage12.15VRated Current(220V input)133ARated Current(110V input)100ARated Power(220V input)1600WRated Power(110V input)1200WRipple & Noise<1%Voltage Regulation<2%Source Regulation<1%Load Regulation<1%Setup, Rise Time<2SPower off Protection Trip Time>9mSInterface Type5 pairs of 6 pin PCI-E connectors (i.e. 10 connectors)Noise <truncated> Range100-240V ACStarting Voltage95-105V ACFrequency Range47-63HzPower Fa<rest of post truncated>

### Reply 7:
No, these guys are right it is you who's wrong. While yes, the PSU will run off 110v (the PSU is pretty much a multi purpose PSU) it will not provide adequate power to run an S9. If the S9 does power up it will be at a lower hashrate. Just read the forum and you'll find plenty of people who's S9s wont even start with the APW3++ on 110v. I bolded the part about you having been told, so you haven't actually done what you are recommending?

### Reply 8:
You are too excited to start mining, just sit and relax a sec, or you will damage or shorten the life of your miner.Just wait for your electrician to come in and install a 220V connection for you.

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16645,"Date: 2011-06
Topic: Connection times out on ONE GPU
### Original post:
Hello!I am currently mining with my two HD5850 @ BTCMine, and ONE of my GPU's keeps timing out!It's overclocked to it's absolute MAX, 870 Core Clock and 910 Memory Clock, pushes out 340Mhash/s, has it been overclocked too much? Is this what's causing it to crash or something?Why does my GPU time out, when my other one (not overclocked), works properly?

### Reply 1:
This is the error i get before it shuts down:2011-06-13 20:22:36: Listener for ""Mine Prim"": Verification failed, check hardware!Has it been overclocked too much?

### Reply 2:
That error is almost always a hardware issue. Either it's overclocked too high or not getting enough power. I'd drop the OC down 10 MHz and let it run for a while and if it still crashes, try another 10. Also, with mining you don't need memory clock speed. Underclock that. I have my 5850's running at 860 GPU Clock and 300 Memory clock and they've been rock solid, getting me almost 350 MH/s. (If you're using poclbm, use -v -w 256 and -f 1 for the flags). Of course, depending on the card, your mileage may vary, but definitely try to get the memory clock lower. It'll run much cooler.Make sure you're using MSI afterburner for overclocking as well.

### Reply 3:
I had the same problem, 1 GPU kept disconnecting after 20-30 mins. At first I thought it was the pool, so I switched pools. Same problem. Lowered the overclock and problem went away.

### Reply 4:
Yeah, that verification failed is almost always a card overheating/oc'd too high. Especially when you have multiple cards in a machine those cards in the middle get their airflow choked off and the OC that works fine for the cards on the outside is just too high for that middle card.You could set the OC individually for each card and lower the speeds on just the card that is having problems. Other option is to get more airflow through the cards. Get better fans or even pull the cards out of the case with some cable extenders and give them some room between each other to breath.

### Reply 5:
I just don't understand why I am getting this all of a sudden, when I have mined before without issues!

### Reply 6:
Overclocking a card too long or too much heat could be having a detrimental effect on it.

### Reply 7:
I am getting this with stock clocks as well :/I am currently working on a batch files, that restarts GUIMiner every 10 seconds

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13707,"Date: 2021-08
Topic: Asic.to Firmware S17+ 95th/s • T17+ 80th/s T17 40w/t • S17/T17 on over 250k Asic
### Original post:
I didn't say it was yours in particular that corrupts the eeproms, did i? But have fun twisting my words for your convenience.There are no pissing contests, the results are out there. Next time, read Bitmain's documentation on how to reflash their firmware from sd and stop blaming it on others. Its a different OS duh. Why don't you blame Apple when your Windows game doesn't ""install easy"" in your Mac OS?.None of my words were specifically meaning your firmware in particular, for you taking it this personally that is your own personal issue.""Autotuning"" is a ""feature"", beyond the name, there are zero similarities. You don't even use the Rust language. Are you using your own miner or Con Kolivas work? Did you comply with his license? If you did, good for you...Notice that its you mentioning other firmware by name, i never mentioned yours in particular, so there is no confusion on MY part, read very well what i wrote in that thread which was conveniently locked before i could even reply.I did object of you saying that Braiins OS is ""making it hard to remove it"", no it isn't. Its ANOTHER OS, not based on Bitmain's, and the flash image facility simply doesn't work because its incompatib<rest of post truncated>

### Reply 1:
I don't know what chat logs are you talking about, but they don't involve me personally. So, whatever taserz. Your personal agenda is not my problem. You seem to be confusing me with somebody else... Since you are so confused and cant stop somehow making strange accusations, I'll just leave you in peace, i said what i wanted to say and ideally my previous message would have gone into that locked thread.

### Reply 2:
Just because you rewrote what we wrote in another language doesn't make it different. You can write yours in rust, javascript fucking assembly it's still copying our IP the Zero similarities claim you just made is far from correct and we all know this. I can pull up chat logs where braiins has stated we corrupt eeproms so it's irrelevant you are taking back your words now...Also sure you can it's not like your using the whole entire nand and using an open source bootloader is not the end of the world. Hell linux has Wine for a reason If you're going to offer someone a product they can just throw a sd card into to install you should make it just that easy to uninstall. The industry is not all neck beards and I had to make a canned response for directing people how to uninstall...No signature checking... I won't even go down that road now.

### Reply 3:
Let me tell you something interesting. Unlike some other firmware, We do NOT write to the eeprom of the hashboards. Should a bug, or a power failure occur during this, you may end with an apparently unusable miner, as certain firmware mods are known to corrupt the eeprom when writing their ""tuning values"" (Essentially copying out method of tuning machines). Instead, we talk directly to the chip using the PIC.We won't lie to you unlike other stating how there are nasty values in the eeprom... lmfao You can mix and match hasboards and basic chips as long as it is the same model unlike our competitors allowing quicker and easier repairs.Our autotuning algorithm and features pioneered this industry which our competitors take advantage from and copy how they adjust chips in the same ways we do. We really appreciate your business and thank you for support the original firmware group not any of the copycats.Also, another fun fact unlike all of our competitors we do not trigger one of the methods bitmain uses to identify if the firmware was loaded onto the machine (Not the eeprom for those who think that is the only way they can identify). Also a little fun fact S19 in testing right now ru<rest of post truncated>

### Reply 4:
Our new update is almost ready. Just wanted to point out our sister service anthill.farm will soo be included with the current firmware fee at no extra cost

### Reply 5:
Yes he even explicitly admits to violating the license in that reply.

### Reply 6:
I have installed BraiinOs on my S17 + miners.I would like to use a different firmware, but I cannot get it installed. I tried it with an SD card but it doesn't work.Can you help me?

### Reply 7:
Don't use this one - it violates the cgminer license.

### Reply 8:
Hello, I would like to ask you is that normal for T17 frequency to be a 720MHz and get 43TH/s?Thanks!

### Reply 9:
You need to uninstall braiins. They make it hard to uninstall.no go away your racistWhat is power draw? How many boards?

### Reply 10:
I have one miner (T17) with 3 boards x30 chips (BM1397) in total 90pcs. Power consumption is 2290W, voltage on each board is 17V, frequency is 720MHz. Temperatures are 60 to 72 degrees for chips and 40 to 52 degrees for PCB.Thanks!

### Reply 11:
Unexpected reply ... not sure how that's implied in anything I've ever posted on the forum in the <rest of thread truncated>
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19316,"Date: 2014-05
Topic: MacMiner / Block Erupter Help
### Original post:
Hello, I am having some trouble could anyone tell what the issue is from the log? It looks like I'm getting a kill message from the pool? I have tried a few different pools and get the same result. alive pool[2014-05-10 21:12:14] Testing pool <truncated> 21:12:14] HTTP request failed: Protocol stratum+tcp not supported or disabled in libcurl[2014-05-10 21:12:14] Stratum authorisation success for pool 0[2014-05-10 21:12:14] Pool 0 <truncated> alive[2014-05-10 21:12:14] Network difficulty changed to 8G (57.27P)[2014-05-10 21:12:14] New block: ...11d03731 #300155 diff 8G (57.27P)[2014-05-10 21:12:14] Stratum from pool 0 detected new block[2014-05-10 21:12:15] BES 0: Opened <truncated> 21:12:15] BES 3: Opened <truncated> 21:12:15] BES 6: Opened <truncated> 21:12:15] BES 8: Opened <truncated> 21:12:15] BES 4: Opened <truncated> 21:12:15] BES 2: Opened <truncated> 21:12:15] BES 1: Opened <truncated> 21:12:15] BES 5: Opened <truncated> 21:12:15] BES 9: Opened <truncated> 21:12:15] BES 7: Opened <truncated> 21:12:15] API running in IP access mode on port 4028[2014-05-10 21:12:16] New best share: 4[2014-05-10 21:12:22] Received kill message[2014-05-10 21:12:22] BES 4 shutting down[2014-05-1<rest of post truncated>

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7158,"Date: 2014-02
Topic: Powering my 20 port hub---need advise knowlege
### Original post:
Hi guys and thanks for reading and any potential help!so I bought this<link> port 90wthe psu outputs 20v @4.5 ampIt will only power like 8 usb miners ( <truncated> would like to upgrade it so I can populate all ports but am very unsure of what I need (which psu) to do it safelyI found this and think it may work, just wanted to get advise from someone who may actually know and can give me a few pointers<link> here is a link to an album with my rig and pics of the current psu and hub<link> for any and all help as soon as I know if it can be done and which psu is correct I think ill be all set!!

### Reply 1:
2.5w each Yellow Jacket maybe the power supply is bad an you should check out how many watts it produces.90W should be able to power 36x Yellow Jackets.

### Reply 2:
I took the hub apart it has a spot for a 2nd 90w plug wired and all jut need to soder in the female I ordered two more psu s for it to test if they were bad and to use on 2nd jack when I put it on. can I just add a second plug and psu? I figured it was an amp issue.. the psu is rated 20v@4.5 amps so I feel that is whats choking me on ports. with anymore on the hub they under prefome/ give the power draw errors ect.. its a power issue.. its personal now between this port and I... its going to hash on 20 ports and like it regardless of what I spend to make that whore hash...

### Reply 3:
please help!

### Reply 4:
You do realize that USB is 5V right?I would just replace the hub with one that has been tested and known to work for this application

### Reply 5:
I'd recommend always checking the output voltage of the ports themselves to be sure that you're not going to fry the ASICs when you plug them in.To do so, find any cheap USB charging cable (can find microUSB or 30 pin iDevice chargers for under $1 on ebay) and cut it open to expose 4 wires (not sure if 30 pin would have 30 wires... seems unlikely, but I haven't cut those open) and then connect the red and black to your DMM for checking the voltage. It should read 5V, or anywhere from like 4.8V to 5.1V (those seem to be safe ranges, from where things will work and not fry).For my USB stick rigs, I used 10 port strips like <link> PSUs, I used 5V 5A on each hub. The cheap one I got from China got hot, yet still supplied power to my hubs reliably for a few months (haven't had it die yet). My preference is Amperor 5V 5A, since they are decently cool to the touch when mining.If you want to use your current PSU, I'd recommend checking out what the ports are outputting. If it's not 5V... you might have dead miners

### Reply 6:
Of course that makes perfect sense if it's only pulling 5v... 12v 5v x 4.5A = 22.5W / 2.5W = 9 Yellow Jackets

### Reply 7:
so my 90w psu is only giving me half that? I have a new psu coming to try. I also have a spare atx psu around here is someone can walk me thru splicing it in.. can I assume that the volts are being decreases in the hub when the power is split so it inputs 12v and outputs 5v at the ports? how can I get the amps I need to fully populate this!!! im getting desperate!!!

### Reply 8:
You need something like 5v x 10A = 50W / 2.5W = 20 Yellow jackets<link> you want to use a PC PSU you can wire it up to the red (+5v) and black (Gnd) wires on a molex/sata connector they're 5v but it needs to have 10A+ on the 5v rail, usually there is a sticker on the PSU that tells you how any amps it can supply.

### Reply 9:
so then I would cut the plugs off of both cords and wire the old plug to the new cord? but the hub takes 20v input the psu it came with outputs 20v can I really feed 5v into it and it will work correctly?

### Reply 10:
Sorry I cannot advise on that, I don't know how this hub is built, but if you think it needs a 20V PSU, you can find them on eBay just as easy, but if this 4.5A one isn't working maybe you need a 10A one or two 4.5A ones.All I know is you need 5V x 10A = 50W = 20x 2.5A Yellow Jackets.

### Reply 11:
can you advise me on the potential pitfalls and hazards of say using 5v input or 12v? the plug and case clearly say 20v but if im using less volts I can squeeze in more amps without going over the rated wattage? im either going to mie on all 20 ports or shoot the damn thing.... can I use 2 x 20v 4.5 amp inputs? the hubs main board has a spot for a 2nd plug jack wired up and everything just dosnt have a 2nd plug there I can get a plug and soder it on and use two 20v 4.5 amp plugs?

### Reply 12:
I don't know how it's built. I think whoever decided to use a 20V PSU with it was insane in the 1st place. I can't see why hooking it up to 5V would harm it, if it's rated for 20V, but don't blame me if it does. Like someone said, USB is 5V.

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9863,"Date: 2016-06
Topic: Pair on s-9s now running photos  are up.
### Original post:
I'm confused. Now they are giving us two temp readings. In the past, for the S7 and others have we just been seeing the pcb temp (labeled: Temp).Then why now they showing us the chip temp. Why is that important now? Poor design?My pcb temps are running 56, 56, 59 at 625M. On any other Antminer I would say there is plenty of room for some over-clocking. Or in this case to move to the default 650M. (EDIT)Chip temps are 87, 86, 91. Are these temps higher than an S7 with the above pcb temps? In other words is there more of variance on this miner than the older ones. Where we can burn out a chip before the pcb gets to 80C. That's still the safety shutdown temp. I believe.Inquiring minds want to know.

### Reply 1:
I'd go with the 1/4"" thick stuff which is what I used.

### Reply 2:
Damn that's sweet stuff. Always fun reading up on the solar array you have going

### Reply 3:
Still confused.

### Reply 4:
I would agree very cool to see 2 S9's connected the the array. I like the loft how does it do with dust out of curiosity?

### Reply 5:
when the pcb hit 80c it should shut downThere is zero info on chip and what is bad.kano.is is 26.31th to 27.13 th at this moment.thesee two machine at 7th more the the network was when I started in summer of 2012 ! network was about 20th

### Reply 6:
Phil do you have overnight numbers for the miner ?

### Reply 7:
Yes this is for 2 miners at freq 625 fans on 70%.almost at 28th with 625 freq3 blocks so far. A long way to go for roi

### Reply 8:
PCB temps are useless...just a cheap way to guesstimate what the die temps would be. My guess would be that with more real-estate afforded by 14/16nm it became worth it it put temps sensors on the dies, and the fact that chips at these node levels are more sensitive to high temps. Anything over 90c continuous on die temps will shorten the life of the chip. I would be concerned if they are running over 80c.

### Reply 9:
if 80c on the chips is bad then the s-9 should be clocked at 575 vs 650 as to go to 79c will not be easy in rooms without ac.i went to 625 but may indeed go to 600.mean while i fixed the mad whistle<link>

### Reply 10:
I let mine run overnight at 650M when it's especially cool in the mine. Even then my die temps were in the upper 80's, with PCB temps in the mid to low 50's.But when you say anything over 90 will shorten the die's life, are you speaking generally about asic chips? Or specifically about asics designed to mine crypto? The reason I ask is that these chips do not need to last 3-4 years. Even with the S9 being by far the leader right now, I can't imagine it being profitable 18 months from now.I would not want to keep a miner throttled back 10% below ""manufacturer's default"" speed just so the chips will last 3-4 years. I just need them to last about 18 months at the most. Even that would be the longest life cycle for a miner since asics. And I want to suck the life out of them for those 18 months. No sense leaving coin on the table.

### Reply 11:
Really nice put them on a colder place.

### Reply 12:
afaik, chips max temp is 125 deg C then it starts to fail.well thats for s7 chip though but i'd assume should be the same.i think other components will fail before asic chip.like i said, below 75C pcb temp should be pretty safe.keep it cool 4.2 Recommended Operation ConditionsTOPT Operation Temperature 125 (MAX)<link> & bm 1385 pretty close, same value.i noticed, pcb temp is roughly 30 deg C lower than chip temp so that can be used as a guesstimate imo.so the built in 80 deg c cut off (pcb) +30 c (guesstimate) = 110 c on chip so should still be ok.just my 2 cents.philip, some screenies pls.

### Reply 13:
sorry real world is in the way.doing a full kitchen reno gutting to the studs.won't post as much for next 3 weeks.

### Reply 14:
I take it that the filter doesn't block that much air flow? I'm going to have to pick some of this up for my S7 that still whistles once in a while.

### Reply 15:
As long as the filter material has fairly large open cells and you knock the dust off every so often it makes very little if any difference in temps even on my s9.

### Reply 16:
yes exactly that the filter is very lite duty.

### Reply 17:
Looking good Phil.I would highly suggest taking that PSU out of the cardboard box and using the stock fan packs to make sure it's getting adequate cooling. I can't imagine the noise of it is a concern out there, especially with 2x S9's howling right beside it.

### Reply 18:
yeah you would be correct if I was using it.I will get to it since I will be using it with the next two s-9'si am using the dual board 4000 watters pulling 2800 watts ac to do 27th.Waiting on news for my batch 2 units.I am hoping they ship soon. like tonight vs the 20th.

### Reply 19:
So far, even having to down clock my b1 (now in my rather warm basement) to 600MHz to keep temps reasonable still liking them and looking forward to my b3.N<rest of thread truncated>
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17090,"Date: 2012-04
Topic: rig causing internet problems???
### Original post:
i have a really weird problem. I have 3 mobo's in my basement, 2 have 1 5830 each and the other has 4 5830's.They're all Win7 x64 2gb ddr3 ram or higher except the one is a low quality P.O.S. with 2gb ddr2 ram and a via 1.7 cpu lol.Anyways... my rig with the 4 5830's is causing problems with my internet. I get timeouts every few mins but when I disconnect the rig the internet works flawlessly. Anybody ever experience this or have ideas how to resolve it?

### Reply 1:
how is your 5830 rig connected to the internet? are those 3 rigs connected to one switch then to a wired/wireless router, or they all connected to the router directly?

### Reply 2:
Although the actual bandwidth required for mining is minimal, the fact that requests go out simultaneously tends to stress some cheap routers. If you are using cgminer to mine with, try the --net-delay option.

### Reply 3:
Also check the machine for malware or rootkits. you might something using all your bandwidth.

### Reply 4:
or simply a bad NIC

### Reply 5:
What did you mean ""every few mins""? it's not a continuous outage, and can recover on its own?

### Reply 6:
#1 modem w/ wifi from ISP to netgear 16 port switch. the rigs are wired.#2 i'll add the --net-delay command line, what does it do exactly?#3 already ran anti-virus and malwarebytes#4 i can be using the internet just fine, everything loads as it should, then BAM!! timeouts like crazy for a period of time and eventually recovers on it's own

### Reply 7:
The ""modem w/ wifi"" from ISP is a modem (DSL?) and router combo which tend to be the aboslute worst. Some router's can't handle the high # of connections that mining uses.

### Reply 8:
Care to look it up in the README?

### Reply 9:
modem w/ wifi is a Motorola Surfboard SBG901, cable internet. I even upgraded to the 10mb bandwidth that my isp offered

### Reply 10:
not really but i'll do it anyway

### Reply 11:
Where do you access Internet from? from the rigs, or another computer. If another computer, is it connected to the same 16 port switch? When you have Internet time out issue, were all rigs working fine or also timed out?

### Reply 12:
i access the internet from my desktop and laptop which are both upstairs and connect via wifi.when i have timeouts all my wifi connected devices experience it and my rigs downstairs have connection problems thru cgminer

### Reply 13:
to clarify: 1. rigs are wired to the 16 netgear port switch2. the 16 port switch is wired to the modemcorrect?

### Reply 14:
The problem seems to be with the modem and integrated access point. what OS are you using for the rigs?

### Reply 15:
My fault, it's a hub but it comes from modem to hub

### Reply 16:
Win7 x64

### Reply 17:
Ok, let's try to clear it up: 1. rigs are wired to a 16 netgear port hub2. the 16 port hub is wired to the modemcorrect?

### Reply 18:
If you are really using a 16 port hub, you may want to try a switch instead: <link> hub multiples your traffic by 16 times and it can get bad quickly. Also, next time when the problem happens, you may want to disconnect the other two rigs, and see if you get same result.

### Reply 19:
well i originally had my internet going from the modem to a netgear wireless router (i disabled the wifi) and was having the same problem. maybe i should go back to it now that i've added the --net-delay command line?

### Reply 20:
1. hub repeats traffic, it's bad for busy connections, get rid of it if possible.2. make sure it's really caused by the 4-card rig: keep it running, turn off the other two, does it help? 3. if not, shut down two miner cards, does it help. This will tell you the problem is really caused by bitcoin traffic or something else in the OS.With windows 7, you can also monitor the tcp/ip packet sent/received and see if there's anything out of ordinary.

### Reply 21:
i got rid of the hub and went back to the router. i'll try these steps and report back with updates. thanks for all the help

### Reply 22:
update:i unplugged the other 2 rigs and left only the 4 card rig connected and still had connection issues.i unplugged the 4 card rig and plugged in the two 1 card rigs and everything ran smooth.i plugged all 3 rigs in and removed one card from the 4 card rig and so far everything seems to be running finethoughts?EDIT: I spoke too soon, the 3 card rig ran fine for a few mins then went back to having connection problems

### Reply 23:
Maybe your 4 card rig is trying to do Windows OS updated? get a TCP monitor and see what it is trying to do.

### Reply 24:
I have Windows updates disabled. I'm going to move it to my dad's house tomorrow and monitor it, if it keeps acting strange then I'll start checking the tcp

### Reply 25:
Wonder if the mystery miner got his botnet by infecting exiting rigs, which is why the network hashrate hasn't been going up.... dun dun dun </tinfoil>

### Reply 26:
whatever it is, it sounds nasty. Bots, virus, should not co<rest of thread truncated>
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14352,"Date: 2011-06
Topic: Wallet address changed in Slush's pool.
### Original post:
On Slush's website, the latest news is a warning to change your password if your wallet address has changed. When I logged in, the wallet address was set to Slush's site.I changed it back to my wallet, and nothing has been lost.So how could the password have been compromised? It was like 14 chars of random <truncated> numbers. And not used anywhere else.Anyone else with the same story?

### Reply 1:
mine got changed twice a few days apart, i dont mine anymore so i only lost 0.2 btc that i didnt even know i hadmy btc guild wallet was also changed

### Reply 2:
There must be someone on the inside, or the pooling software has some kind of security hole in it. I know it isn't because of the Gox debacle, because I didn't use the same password or username.Damn Hackers

### Reply 3:
That's why BTCguild has a payout lock. I'm pretty sure you had a similar password on Mt. Gox as your BTCguild account.

### Reply 4:
someone keeps repeatedly changing my wallet address on BTCGuild, but the payout lock owned them the first time, and the email-verification owned em the second time... hax away hax0rs.. i spose.. the box has nothing on it but ubuntu and the miner running so even if the box is compromised they cant get anythingA++ to btcguild for some common sense security maybe u should give mark kaspareto some lessons...

### Reply 5:
Nope, randomly generated passwords. No similarities at all.

### Reply 6:
No HTTPS by default on slush's pool when logging in. Certainly not good...

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19132,"Date: 2014-03
Topic: Gridseed mining discussion #irc channel
### Original post:
Hi,We started an irc channel for Gridseed mining, modding, troubleshooting and general discussion. Its pretty <truncated> on freenode.net

","{
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21408,"Date: 2017-05
Topic: Two new T9 miners. One won't hash
### Original post:
Hi,I just got my two new T9 miners in. One is working properly. The other won't hash and show a red blinking light after the booting process completes. The difference that it has with the working T9 is that it shows very high temperatures 105-115 for all three boards. I checked for loose heatsinks and there are none. Also the fan blowing at 100% blows out cool air from the miner. I tried resetting, rebooting and upgrading the firmware but to no avail. They both have the same settings. Could it be a faulty temp sensor?Can't really find a lot of info on the interwebs, so maybe someone here can help me out.Thanks.

### Reply 1:
Yes if the miner is or thinks it is over-heated hashing stops.The high readings are while it is blowing out cool air?If so, start a support/repair ticket with Bitmain 'cause something is not right...Posting a screen shot of the GUI so folks can see what its reporting is um, always a good idea...

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12927,"Date: 2014-02
Topic: cgminer and stratum proxy
### Original post:
HiI've got a few block erupter miners that need the stratum proxy to run - working fine.I've had some strange discrepancies in the hash rate of my avalon 200 clone (which uses cgminer) between local hash rate and pool rates (tried a few different pools).Anyway, I've got no high hopes in this ""idea"" but if possible I'd like to try to see if it makes any difference.So, is it possible to configure cgminer to connect to the stratum proxy hosted on a computer on the same LAN?thanks-S

### Reply 1:
nevermind I guess I figured it out.we'll see how this works, just hoping for a smaller number of stales..

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9983,"Date: 2016-09
Topic: middle hashboard not working on my S9 after 20 days
### Original post:
hi,it suddenly disappear from the page ( my miner down rated to 568 from the first day )what should i do ?

### Reply 1:
it still have red flash like the otherand the failure lamp not flashed!

### Reply 2:
here is a picture toked yesterday after more than 2 days of working

### Reply 3:
Same happen to me yesterday. Batch 1 S9

### Reply 4:
is there a fix to this issue ? its batch 9

### Reply 5:
I have discovered two issues with s9 gear.One is a truly dead board.Two is missing hash.Missing hash can be fixed.so to see if it is missing hash check your power use ie if the miner is pulling full power say 1250 to 1350 watts you have missing hash.if the miner is pulling power you have a dead board. wait for photo.if you have a lite out like this photo you have a dead board.You also would be pulling power not full power

### Reply 6:
a spacer for clarity for my main account philipma1957

### Reply 7:
So if all three boards are lite up and you are pulling full power you hash is being stolen or diverted. I do not know how they do it I do not know who is doing it but I am certain it is being done.I discovered this the last few days along with my dead hash board.You can stop this. change the password from root to a longer 12 character password then put it behind a second router.our network is nowcable modem --------- old router ---------switch ---------new router ----------- new switch-------- 6 s9's and 1 s7this brought back all my boards that were dropping out.(other then the dead one)You can do a free test by bringing your miner to a different internet ipA friends house should fix the issue if I am correct.I found this out bringing gear back and forth from the solar array to my house to try to fix the dead board.

### Reply 8:
Which, since bmminer is apparently closed-source, could be in there on purpose. In any case it makes finding and patching the hole a lot more difficult.

### Reply 9:
You really should ask CK about this but;Electrically there is no way a single instance of CGminer can divert the hash from 1 board. Periodically redirect all the boards in a miner yes. It checks what boards are present and then works with them as a single package getting/sending all data from/to a single IP address.Now if there is a man-in-the-middle sitch where a hidden 2nd instance of CGminer is running that from time to time isolates and takes over control of the one board...

### Reply 10:
Ja. But, Phillipa said that he has also seen this on s7's and s5's which has code that can be checked.Closest to I've seen to this (on a s7) is one board-shutting down for 15min to an hour and then coming back to life on its own. I have 2 s7's that do this every so often -- as in maybe once every few days to over a week or more between the board apparently taking a nap for a while then getting back to work.The oddest thing about is that M'sMiner Monitor and Kano miner stats will show the 1/3rd drop in real-time speed while the average shows what it should be though after 15min or so Kano will start reporting the drop in average. Bitmains GUI reports the same drop in RT and average as normal. Also shows all boards/chips are alive. Do a soft or hard reboot and all is as it should be. Very odd...

### Reply 11:
Appears like one of my hosted S9 has a dead board, right side looking from the intake. I think it had red light when I was looking over the machines because I couldn't immediately distinguish which board was dead, but when I took it down for testing the red LED never lit. It draws full power and the buck output is the right voltage but it doesn't register in the stats. Guess we'll see what the owner wants to do about attempting warranty.

### Reply 12:
Yeah I don't know why this happens but my truly dead board pulled zero power. My vanishing boards pull full power.If I move the miner behind a second router all boards work.Off topic. I finally after 10 weeks minus 1 day finished my kitchen this real world but first world problem has been a true distraction to my mining.I ordered a shit ton of parts over the last two days and will start fucking with the gear in the solar array.First off I need to figure if it is a board issue and not a high jack of hash. But these boards do not behave like my dead one.I will post back more info on this the next few days.

### Reply 13:
I have a Skype msg out to a buddy of mine to see if he has the time/interest to look at the firmware file(s) for the s9. Just waiting for him to show up.Even by my standard the dude is by far a brilliant Dr. of Computer Science and does keep Blockchain discussions alive where he currently works (major Investments Firm). Leads a group whose job is to explore new ways of mining Big Data for investments modeling and making front ends for clients to use for <truncated> the huge amounts of raw data being collected about, well, everything nowadays....Anyway, between him and opieum2 from <rest of thread truncated>
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9425,"Date: 2015-10
Topic: Rebuilding Damaged ATX EVGA PCI-e cables. Where to get parts in Canada?
### Original post:
I have about a dozen of these cables that are burnt or damaged from the same source, this is the worse one;<link> plan on cutting the burnt part and re-crimping new connectors on them. To do this i would need to find an inexpensive source of these pin and connectors, something of decent enough quality so they don't become the weak link.I currently have this tool;<link> this wire stripper (diff color but seem to be exactly the same thing);<link> for clarity;-What tool do i need to crimp those PCI-e pins if either of the 2 i have won't work?-Where is a inexpensive place that ship to Canada that i could buy what i need for to rebuild the connectors?

### Reply 1:
What model PSU are you using? Is it modular where you can get a new cord or do you really need to re-use those cables. Generally speaking reusing a burnt cable is a bad idea.What miner did you have it hooked up with that damage happened?

### Reply 2:
EVGA's G2.The part that goes into the PSU is mint, only one time out of the 10 times was there any surge back from the shit asic (GAW rebranded Zeus's) connectors darkened that end. This happen accross 3 PSU, its not the PSU is the shit connectors that came with the ASIC and the replacement i got, they all had bad connection so they would warm up. Over the course of 1.5years they eventually melted the connections.The bad portion of the wire only extend 1-2cm, cutting the bad part should be a-ok. You can visibly see corrosion up until a part.Both GAW Falcon's eventually burnt their corresponding connectors.

### Reply 3:
I get all my connectors from: <link> sure to add the pins,they don't come with them in most instances: <link> do ship to Canada <link>

### Reply 4:
It look like they do, however;USPS First Class International (15-30 days)$7.99orUPS Standard$19.20A bit expensive or slow as hell for 14$ of stuff.Also, they sell 4pack of female pins for 0.3$ or you can get 6 females pins for twice the price, 0.6$ as an option coming with the plastic connectors.Did i miss something, like they need different connectors or its just a marketing trick?Its too bad they don't do better prices for bulk orders, i'd be inclined to make my own cables from now on, but they don't seem to be posed for good deals for Canadians, and for the items i checked, they only have ""pricing"" for 1+, no 10+ or 100+. Edit:Also i can't seem to checkout, the shipping estimator doesnt make sense, adding some pins to the connector order make the shipping go up to 70$ which is plain derp. So i tried to see what quote they really give me but at my cart/checkout i can't seem to click anywhere to actually try to place the order.

### Reply 5:
It's nothing against Canadians it just is higher to ship to it for them. You can get it cheaper if you are willing to wait. But you will not find fast and cheap I'm afraid unless it's a site in Canada.I would get the cheap shipping and just wait unless you need it there like now then bite the bullet and pay extra.

### Reply 6:
Yeah but the cheap shipping disappear the second you add any significant amount of items to the carts. And it doesnt actually seem possible to check out, not sure if the site is bugged or what, but 50$ for slow shipping for 20 connectors and 120pins is insane.It really goes from 8$ shipping to minimum 30$ the second i added 60 pins to the 10 initial connector. It would be cheaper to buy them separately, but the quote system and the whole checkout system seem bugged out.

### Reply 7:
I'd be happy to buy em for ya & ship em to ya via USPS (preferred as its easier) or UPS or whatever 5 of these= $5 60 pins= $4.50 total=$9.50 Priority USPS (2-3 days) is $8.00 (to me) so $17.51.Then to ship to you $$$ Shipping to me:PM me some shipping info for you & I'll see if I can save ya some cash Maybe not time though

### Reply 8:
If you're needing standard 6-pin PCIe and the crimp pins for 'em, heck I got that. I can sell you 30 cables worth, drop it in a flat-rate priority box and ship it to Canada for $30 total.

### Reply 9:
There's a deal !!!

### Reply 10:
You can get straight PCIe cables from Klondike_Bar or myself here in Canada. You could just splice them on, they are 16awg and as high of quality than what ships on pretty much any ATX PSU.

### Reply 11:
Thanks for your kind offer, but as you already saw, Sidehack is offering me a nice deal.However, where do you click when you,re on that page to check out?Um, yeah, i'm interested, considering we're talking about fixing all my cables + fix all my PCI-e cables problem for a long time by making more, for a fraction of what a set of these cost from retailers or EVGA's own website.I'd take the offer strait away, but its Sunday, so meanwhile i'm wondering if there's anything else i'd want to buy from you. Dont suppose you have some huskless working S3's you'd want to part with for cheap huh? Maybe some S1's fan lying around (JDH123<rest of thread truncated>
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13493,"Date: 2016-03
Topic: Eyes On Miner - beta monitoring software.
### Original post:
L8nit3's Eyes On Miner - Beta 5Hello again BCT members I recently decided to pick up learning python again, and started on a small, spare-time project. It basically began as a way to test what I was learning (at home, self-teaching). It's a small front-end for a (currently) small number of asics. It runs in windows and linux for sure, however currently it must be run within the local network. Remote access is an eventual goal, however isn't at the top of the list for improvements.Should you choose to copy-and-paste the src and just run yourself, then this script runs on python 2.7 and requires PyCgminer and EasyGui to run, and is compiled with PyInstaller. Or you can use the pre-compiled windows exe below.sudo python pip install pycgminersudo python pip install easyguiCURRENTLY SUPPORTED ASICS-Gridseed Globe-Antminer s1-s7-Hopefully more soonLINKSexecutable link = <link> code paste = <link> script relies on Thomas Sileo's PyCgminer module, credits for this module go to him alone.Let me know what you guys think Also, if you have a device you would like added, please send a 'cgminer summary' using the pycgminer module (or any other method) to l8nit3@outlook.com, and I'll add it as qu<rest of post truncated>

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20362,"Date: 2015-04
Topic: Antminer U3 w/RPi using cgminer-4.9.0
### Original post:
Smiley Just installed my U3 on a RPi B using standard start on cgminer-4.9.0 ie. --api-allow w:0/0 --api-listen and system is running at a high of 53G. This was where I stood this morning, at some point the U3 zombied but the RPi was still active. Since I was configure icarus, I decided to configure bmsc but nothing related to those commands would run.Any insights, as to the bmsc or the zombie?Thank you in advance.

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11137,"Date: 2022-04
Topic: Chip temperature - Avalon 1166 Pro 81TH
### Original post:
Good dayThe temperature of 3-4 chips on the first hash board and one chip on the second board of an Avalon 1166 Pro 81TH are increasing faster (going to 88C) compared to the temperature of other chips; to counter this problem, we configured the hardware in normal mode instead of high performance. Can someone suggest a fix for this, we would prefer to operate in high performance.Thank you for your time

### Reply 1:
I think your problem is related to loose heatsink and I think you will need to find that chip to reattached the heatsink. But if you don't have some tools to reattached those heatsinks follow this guide below to refresh your miner and hashboard and it might also solve your overheating issue on some chips. Here's my guide <link>

### Reply 2:
I tried aging using FMS once before, but how long does that procedure last? It was quick, is that normal?Maybe I should use the command <truncated> <truncated> instead of clicking on aging?Thank you for pointing out a potential issue with the heatsink; if aging does not work, I might try to reattached the heatsink, but Ive never done such a repair before.Thank you for your time

### Reply 3:
I don't know if it will save permanently but based on someone's experience that I heard it after the miner restart/reboot the issue goes back again but their issue is related to fan speed command, not on aging. So why not try to send that command again or use the aging button?That command above or the aging button is automated tuning you can also manually play on the parameter like this command <truncated> <truncated> parameter above is for frequencies I don't know if you can change them you can try to play the parameter depending on which hashboard is affected by overheating.The whole guide on how to apply this parameter is here Now I remember you who ask for a list of FMS commands.

### Reply 4:
Do you have any idea of the maximum chip temperature for a 1166 Pro 81TH; on the Canaan website we can only find the user manual for the 1146 Pro and the maximum chip temperature is 85CThank you

### Reply 5:
If you go directly on the detail page of 1166 pro under documentation you will get the 1146 pro manual that's the only manual they have for this unit. So yeah the maximum temp of each chip is 85C more than that the hashboard will be disconnected automatically and you will notice the drop in hashrate.

### Reply 6:
i have actually just noticed that one of my chips on the 1 hashboard is about 158C its only one chip and im just wondering is this chip just going to burn up the board or is there somehow a read error on this board where that cant be possible?

### Reply 7:
Check the hashboard physically it might have a loose heatsink you can fix them by using thermal adhesive or thermal glue or hire someone to repair the hashboard it could be a dying chip or it needs a bit of resolder due to cold solder joints. Check the list of repair centers from this link below and look for near repair centers. - <link>

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19126,"Date: 2014-03
Topic: Please help me with PSU , GPU and mother board cables.
### Original post:
HiI've took Pictures of my GPU + CABLES, PSU + CABLES, MOTHERBOARD , PCI-E.Please check out my Pics and help me with the connections.If you would give me a point wise instructions based on my pictures which cable goes where and fits where..will help me really to get it connected.I didn't take pics of my another PSU 850 watts...because i just need to know how to connect psu with the gpus and motherboard..so i can do the same with the other PSU.I'm new to this rigging i want to connect the cables right.Here are the pictures - <link> you

### Reply 1:
I'm not sure anyone else is going to attempt to help as this is a HUGE request that would be very tedious and time consuming. If you're never built a computer before you have to start somewhere, but this would probably make more sense if you could find someone local to help get the Rig physically assembled and an OS and mining software installed and us help from there.""most"" cables only fit in 1 spot 1 way, but not knowing what you are doing and static are problems for hardware assembly.

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]"
3472,"Date: 2014-06
Topic: [CLOSED] BLITZ GB SP-Tech SP15 pre-order - 3TH/s - $2800 *** 0.93$/GH - 0.46W/GH
### Original post:
CLOSEDStatus: 1/4000.93$/GH - 0.46W/GHWelcome to the first BLITZ Special Group Buy! At people's request SP-Tech might produce an ""SP30 Home Edition"" named SP15 which will be one ASIC board in SP30 2U enclosure with only one PSU. September shipping.SP15 Specs(+-10%): 3TH/s - 1300W Price:$2,800 with included FREE SHIPPING or 1 Free month of HOSTINGSPECIAL CONDITION: Minimum 400 units required for this Group Buy! If the requirement isn't met I will refund the reservation fee. Group Buy Deadline is 5 June 23:59 CET!In order to commit and reserve your place, please send 0.05 BTC for every unit that you plan to purchaseto the wallet address <truncated> 0.0001 miners fee, to ensure the transaction arrives in time). Example: If you want 10 SP15 miners then send 0.5 BTC, if you want 17 SP15 miners then send 0.85 BTC.PM me with the followings:- your e-mail;- transaction ID;- your preffered payment method(Bitcoins, Dollars or Euros);- want 1st month of free hosting or not Payment Terms:You're committing to send full payment when you place your reservation and after you get payment details from Spondoolies Tech.Please note that the prices are in addition to the 0.05 BTC! The collected bitcoins<rest of post truncated>

","[
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SP30 Home Edition"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SP30 2U enclosure"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
12902,"Date: 2014-02
Topic: Problem with CGminer/Ubuntu (libudev.so.1)
### Original post:
Hey all, after a lot of unsuccessfull googling and asking in freenode chats I come to you guys to hopefully get some help with my issue. I am rather bad at most things with PC's, but I like trying to learn stuff and get it working. However I've so far been unable to fix this problem. I'm mining with 2*Asus R9 280X, using Ubuntu 12.04 LTS. However I've started getting this error message when I try starting up cgminer:./cgminer: <truncated> no version information available (required by ./cgminer)I've tried apt-get install libudev1, and a bunch of other commands that was suggested, but I honestly have no idea what this even means (am I missing libudev1 or is it just unable to find it?).A lot of the advice I've gotten has been ""install BAMT"" or ""run windows"" but I am so close to getting this to work reliably after 5-6 days of <truncated> that I would like to get it done.-If I'm leaving out any information just say so and I will get it.Thanks in <truncated>

### Reply 1:
You're trying to run binaries that were not made for your version of ubuntu so you'll have to compile it for yourself. Also there's a good chance you're trying to run a version of cgminer that doesn't even mine on GPUs since cgminer hasn't mined on GPUs for quite a while now. Try different software.

### Reply 2:
It's cgminer 3.7.2 so the last GPU version I believe, and the weird thing is sometimes (now for example) it DOES work - although I think it might be lowering my expected khash/s by ~100 pr. GPU.Compiling a version myself sounds like it's over my skill level to dabble in, but installing a newer Ubuntu version like 13.10 should fix this aswell?

","[
  {
    ""hardware_name"": ""Asus R9 280X"",
    ""hardware_is_owned"": true
  }
]"
13053,"Date: 2014-04
Topic: Is this possible?
### Original post:
There is probably a reason this cannot be done but here's my question:Is it possible to create a miner that mines in a pool but when your GPU finds a block, instead of telling the pool about the block, it tells your wallet instead, enabling you get the coins instead of the pool?This would enable you to solo mine but get coins from a pool for ""free"".I have been thinking about this all day, so thanks for the help!

### Reply 1:
Been asked a thousand times: No; you are mining to a particular address and can't change it afterwards.

### Reply 2:
Ok thanks.

","[
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  }
]"
23810,"Date: 2021-12
Topic: What Does the miner do the whole time?
### Original post:
Hi, I am new to bitcoin mining and am trying to understand several concepts that I have not been able to find in internet.I have an Antminer S7 and have set up a pool. the pool is finding a couple of blocks a day, so I would like to understand what my miner is doing when it is working? is it always creating hashes to try to resolve the BTC blocks that are generated each 10 minutes? or it splits is time between creating hashes to solve new blocks and validate the already solved blocks?

### Reply 1:
Solving a block validates the transactions inside it. Your miner is hashing away trying to solve a block which will then confirm all the transactions within. There is no splitting of time or anything like that.Mine On!

### Reply 2:
It is always trying to solve the blocks which you connected with the mining pool. Your bat file will show you mined blocks and then hashes will be used to solve the blocks that is how every miner hardware doing its work. When the heating is increased your temperature meter will give you the way to understand that you have to reset when it reaches to high temperature. This is only you have to do from your apart from managing the miner set up.

### Reply 3:
The miner will have to look after the whole system if he is working in a hot region if they are going to heat up.It is better for miners to plant their system in cold weather or snowy region where we do have not to face processor heating up problems. More is that you have to solve blocks that you are connecting in a mining pool. you have to confirm valid transactions that your miner hashing away.

### Reply 4:
Just checkout the Help section at KanoPool for full details on what is happening. Here is a good start on that

### Reply 5:
10 hours of peak sun hours is just impossible regardless of where you live, but then if even if we were to go with the assumption that you do get 10 hours, what happens in the remaining 14 hours? if your miner sits idle it will never ROI, so you still need to pull from the grid, mining solar is pretty much useless unless you it has tax benefits of some kind like how things are with our friend phill, but just go and buy a few panels to mine bitcoin won't work.

### Reply 6:
Mining with solar successfully needs a grid tie in. Ie you mine say 10Kwatts an hour or 24 x 10 = 240 kwattsyou net meter with the power company = WTF simple you produce say 50kwatt an hour for 5-6 hours (seems wrong it is not wrong to use those factors). that is 240kwatts to 300kwatts a dayso when the solar works and you have a 50kwatt setup you burn 10 kwatts net meter the other 40kwatts.or 240-300 a day solar madeand 240 mining burned means you are at 0 to 60 kwatts net free power a day.to build a 50kwatt setup you need 400watts x 125 panels = 50000that means $$$. and a lot of roof space.Most homes do 15 to 25 panels and use 300 watt panels or 7500 watts to 10000 wattswhich is about 50kwatts a day divide by 24 = 2.08 kwatts 24/7 that is single s17 set at 2000 watts.

","[
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  },
  {
    ""hardware_name"": ""temperature meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miner set up"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""panels"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""solar"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": false
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]"
7768,"Date: 2014-05
Topic: BFL Labs Bankruptcy and Refund Clawbacks
### Original post:
This post got me banned from BFL forums, which I totally expected. Are any of you lawyers? When BFL goes bankrupt will my US$60K+ refund get clawed back?---TOPIC: Refund Clawbacks when BFL goes BankruptSome people got out of Bernie Madoff's ponzi scheme before the bottom fell out and came out whole, or way ahead.After the whole Madoff thing fell apart, those who still had investments with him had pennies or less on the dollar to recover. Lawyers for those unlucky investors have tried suing other investors who got out in time to improve the settlement for their clients.So ... in this SIMILARLY FRAUDULENT SITUATION here, when BFL goes bankrupt and doesn't have enough to refund all the Monarch pre-orders, will lawyers go after some of the refunds handed out earlier? Of course, a ruling of FRAUD will mean some personal assets of BFL staff might be in play, too, for settlements. I wonder how discovery of BTC assets will go in that case?

### Reply 1:
You are not a vendor or creditor of BFLs you are a customer.Your refund cannot be ""clawed back"" as you put it.Only recent payments to vendors and suppliers can be recovered.Relax.

### Reply 2:
This happened to a buddy of mine. He was a consultant working at a company. They paid him for his services. Then they went bankrupt. He had to send the money back to the bankruptcy court.

### Reply 3:
@JoeVentura: awesome, glad someone knows what happens in this case!@BurtW: sounds bad for your friend, thanks for letting us know, knowledge might come in useful some day! I'll learn to stay away from near-BK-customers, or to charge them way more for my services to account for the risk!

",[]
11127,"Date: 2022-04
Topic: Next Generation ASIC's - How do we recycle the past?
### Original post:
With the halving upon the horizon, every ASIC manufacturer from Avalon to Zeus will have produced a great deal of hardware that has achieved ""legacy"" status. The question being posed is this; what happens when all utility from these machines lost? Take for example the Antminer S1, ""the staple of the home miner"" is how BITMAIN described the S1 and they were right... for the time. Currently the S1 only has utility to those that DIY and make custom solutions with the blades, or to those that want to mine for a incredibly small amount of BTC and use the unit for a heating source. As of today's date a S1 will make about 0.004 a week. In year or two, I don't think it would be unreasonable to assume that the utility of these devices will be rapidly approaching those of a USB stick miner today.So the question is this; just what the hell do we we do with all of this old mining equipment? S1's can be had for 20-$30 shipped to your door now, people are basically selling them at a loss just to get rid of them. What happens this time next year? Do they just wind up in the dump because nobody wants them? The Atari 2600 can still play games, a 386 PC can still run applications that wont work on n<rest of post truncated>

### Reply 1:
Thats a good question / statement. It would be nice to see Bitmain take some S3's that are becoming more and more power hogs everyday, and to be able to get credit towards say an S7 miner. But they still sell right now for about $150 via eBay but by the time halving comes theyll drop dramatically.My suggestion: Sell them now, and keep a few or one for the history books to show your kids / grandchildren.

### Reply 2:
That would never happen. Its cheaper to get brand new components than let say recycle the re-usable components on S1/S3 boards. Recyling stuff cost more money than just getting new stuff.Also if you re-use used PCB components, maybe you'll have things near death that still pass the check, but will die soon. I am not sure what that would do to the failure rate of the rebuilt miner.

### Reply 3:
My suggestion is close sell all to lower or free electricity once it's close to not being profitable. With this you gain some more money invest right back into BTC with that money.I don't suggest keeping one for history unless it's special. Sell them all you can buy one in 2-3 years for much cheaper and have the history then if you want, again that is if not special miner with limited run.But then you later can buy new miners or just hold. Option is yours and it is very good and helps add to ROI.

### Reply 4:
BTW which miners do you think are most likely to be assigned to the annals of history?

### Reply 5:
Gridseed Blades (40 chip); look sideways at them and either the regulator hardware will burn out or the MCU will die.

### Reply 6:
I think it will be based on the first's like usb from asic miner. Or some of limited quantity run's that there are fewer in number.Those are the two I see as being most collectable long term. But not sure as far as value in 10-20 years... hard to tell could just be a cool item on wall. Also one's with multiple colors... people love collecting a set always will.

### Reply 7:
Sure be nice if companies would design new versions of gear that mounted to to the previous version's mechanicals. Save a lot of money on heatsinks. Possibly they could offer a slight rebate for returned hashboards, but scrap value for basic electronics isn't all that high.

### Reply 8:
See Innosilicon, they seem to be the only company to date (of the majors) that has done ANY ""build new units to be able to reuse old hardware"" at all (Farmboy/Zeus stuff).Despite Bitmain claims, they have never actually done so, and I don't think anyone else has ever even talked about ""upgrading"".

### Reply 9:
You could always mine some low diff altcoin with the s1, and hope the price jumps in the future. Other than that....what if btc price goes up ? then your small amounts of btc are worth something....so dont mine at a loss, but why not if the profit is small ? Also, you may consider to mine solo (solo ckpool for example) and have a little lottery thing going on. I sold all my old miners, but I did keep a usb block eruptor for posterity.

### Reply 10:
My S1 still generate 0.027BTC per month, its above what i could call a ""small amounts of btc"", that would be dust for me, like what a old usb miner would do. I find it pretty reasonable and them being completely silent is really nice, imo. I can undervolt them to get them to about 1W/GH and run them without a fan.Nice quiet heater and with the profitability so high right now, they're even profitable BEFORE taking into account money ""saved"" by using them as a heat source for winter.So to recycle the past, i'd say its just about getting them to the right home.

### Reply 11:
Any miner can be ""recycled"" as a space heater. I suspect quite a few older ones are al<rest of thread truncated>
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    ""hardware_name"": ""Antminer S1"",
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  },
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gridseed Blades"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""usb from asic miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""usb block eruptor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S1"",
    ""hardware_is_owned"": true
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]"
15832,"Date: 2016-11
Topic: IT DRP for your mining rig
### Original post:
Hey! A mining rig is a complex IT infrastructure where each resource runs important function. In this infrastructure, each resource failure results in direct damage to your profit. The more time the recovery takes, the more damage your profit suffers. So, do you have an IT SRP/DRP to recover your mining rig should a disaster happen to it?

### Reply 1:
no, because the margins are already tight enough especially if its a new setup and you're still trying to reach ROI.when hardware is pushed, the best you can do is be reasonable with what you're expecting for output; and monitor all equipment.mining equipment isn't life threatening if it fails, it doesnt need a disaster recovery plan.

### Reply 2:
What about the big mining rigs that generate alot of profit and could cause the loss of investors if being destroyed? I understand that your home mining rig does not need an IT DRP, but there are companies that run mining rigs as business. Critical processes often run from these rigs like cloud mining.

### Reply 3:
There isn't enough profit in mining to have hot-standby equipment, redundant power, offsite backup datacenters or even UPS'sWhat you need is <truncated> electricity and lots of cool air, the only redundancy you may get is redundant internet connection and maybe, if you can get it for free, redundant power.

### Reply 4:
i'm guessing you're talking about having another set of mining rigs on standby?mining has always been cut-throat competitive. if someone went as far as to spec up a set of 'standby' rigs for their setup, i'd imagine they'd end up using them full time in a matter of hours.in terms of redundant power, redundant network, redundant stratum/coin daemon instances - thats a given with any setup.

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    ""hardware_name"": ""hot-standby equipment"",
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  {
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  {
    ""hardware_name"": ""offsite backup datacenters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UPS's"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""redundant internet connection"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""standby rigs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""redundant network"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""redundant stratum/coin daemon instances"",
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]"
13104,"Date: 2014-05
Topic: How to convert .Conf file into .Bat
### Original post:
Hello, does anybody here has any clue as to how to achieve this for CGminer? I just like using a .bat file better, I'm more used to it.

### Reply 1:
Don't you just remain it .bat and open it using 'command prompt' in windows? You should also 'save as' if you are using notepad it edit the text.

### Reply 2:
I know but the text from a .conf file looks a lot different than a .bat file, is there any way to convert one without having to edit the text manually?

### Reply 3:
try it another waycreate bat file (in folder with cgminer.exe) and put in: cgminer -c path_to_conf_file e.g.

### Reply 4:
Just use the command line options that are in the Top Post and/or readme file. Easy Peasy.

","[
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    ""hardware_name"": ""CGminer"",
    ""hardware_is_owned"": true
  }
]"
19479,"Date: 2014-06
Topic: [P2Pool Issue]
### Original post:
Hi allI found 2 blocks, but my p2pool didn't payout... IT DIDN'T PAYOUT!!!!!!There was a problem with the tx <truncated> was 1 minute later....And he claimed MY <truncated> can I Do Now!!!?Joannes Wyckmansip: <truncated> time stamp of block!!!!!

","[
  {
    ""hardware_name"": ""p2pool"",
    ""hardware_is_owned"": true
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]"
10182,"Date: 2017-02
Topic: 2 Avalon 741 1,150W on Apw5 Antminer PSU 2,600W
### Original post:
I want to use APW5 PSU 2,600W to run 2xAvalon741 1,150W. I know the power is very near the limit, so is it dangerous?Do you know another quality power that the price is reasonable? Using each Evga supernova 1,600W cost me 300$ is expensive.

### Reply 1:
so to use the apw5 psu and get 2600 watts you need 240 volts.Do you have 240 volts?this does 1 avalon 741<link> does 24kW Top View

### Reply 2:
Or more to the point for the General Public, do you have 208 to 240VAC to feed it? The APW5 is derated to 1,500w when fed 110VAC.If you do have the 208-240V then you will be fine.

### Reply 3:
yeah he should be good with 240 volts.this one below has a bit more power<link> this will go to 4000 volts.<link> rivalsthey sell break out boards for 2k, 4k , 2880watt psus.I have reviewed all their products. Good gear. for you with 2 units.I would buy 2 of these<link> a 4k board from either optimzier or <truncated> psus work with either 4k board and will give you a max of 4600 watts. you will max your efficiency running 2 avalon 741's but can add a third with ease.you need 2 fans to cool the units. buy these two<link> is a solid setup for 2 avalon 741's and allows for expansion to a third

### Reply 4:
And also for the above boards, need the PCIe cables as well... 16 for 2 Avalons.

### Reply 5:
Yeah. They need the cables. May as well order 25 cables .Then when you add the third miner the cables are on hand.

### Reply 6:
Thanks Philipma1957Thanks philipma1957, So those power supply is better than Bitmain? Is it smaller than Bitmain?I saw on this page, some of miner got fired, and every miner cost me alot of money.On the website of canaan.io require only 6 cables. Why do we have to buy 16 cables? Did I missed something about Avalon 741?PSU output pins: 6 x 6PIN power connectors.

### Reply 7:
The miners have 4 PCIe connectors per-board x 2 boards per-miner = 8 cables. Yes, Canaan says only 6 (3 per hash board) can be used but it is always Best Practice to use all power connectors provided. Partly because cables on many ATX PSU's have light gauge wire so the extra connectors/wires make up for that and partly just to keep connector temps from rising.I use some of the IBM and HP server supplies and they are great. But, I just got tired of also having to get the not so common IEC-19 power cords, breakout boards and cables and finally started just using the Bitmain PSU's. Have 25 of them and to-date zero problems.EDIT: Well I stand corrected... The Avalon 721's (which I have) has 8 PCIe sockets but was just on Canaan's site and the 741 despite drawing more power, has only 6 sockets. Not good choice in my book of design rules but thass what they use. 'Acceptable' for consumer gear, yes but not a good place to shave production cost.

### Reply 8:
Thank you very much, I will use Bitmain PSU or Evga for reliable.May I have the book title and ISBN? I love reading.

### Reply 9:
The Book title is: Over 50 years of working with power electronics electronics with the past 30+ as Sr. Engineer designing industrial laser systems... As far as specifics on the PCIe connectors, their max rating first of all depends on the quality/condition of the pins used and that sets max current per-pin. Anywho, @12vdc it works out to 288w max - with best quality pins for both the socket/plug, eg gold or silver-flashed and not plugged/unplugged more than 10 times. Even then then connector will get warm(ish). Best Practice for long life is keep connectors around 50% of max rating when feasible. ref the section on PCIe at: <link> that advice for max sustained load per connector definitely applies to your wall sockets and cords as well....That would put us at 144w/connector = 432w per board using 3 connectors. The 721's with their 4x connectors per-board and less power draw - perfect design choice. The 741 with more power draw and 3 connectors.... Why? To save maybe $0.50 tops at the cost of the connectors aging faster??? Throw in many folks using non-optimum PSU's that may have only 18ga wires (higher voltage drop on top of iffy regulation) and their choice is is -- not the way I<rest of post truncated>

### Reply 10:
KNC Neptune use one PCIE 6pin connector for one cube with consumption aprox. 400W... With good quality AWG16 cables I had minimum problems with that (but not overclocked to 500MHz). But of course with shit/AWG18 cables yes...

### Reply 11:
And are not the threads on the Neptunes and Titans filled with many pics of fried connectors? Molex says 8A max per circuit so with 3 pairs that is 24A total @ 12v nominal = 288W max for the connector. *Can* that work? Yes, for a while at least especially with 16ga wires to help carry away heat from the connector. However, it is certainly not a good idea for a designer to EVEN THINK of blatantly ignoring the mfgr specs....

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    ""hardware_name"": ""Avalon741 1,150W"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Evga supernova 1,600W"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IBM and HP server supplies"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
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    ""hardware_name"": ""Avalon 721"",
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    ""hardware_name"": ""KNC Neptune"",
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]"
21733,"Date: 2017-11
Topic: Please help me ,,, a problem in starting mining
### Original post:
<link> I click on the mining this error gives me red

### Reply 1:
Your image:What command did you use to run this software? Did you put in a command on the command line or just click it and hope it ran out-of-the-box?

### Reply 2:
<link> followed the steps on the YOUTUBE ,,

### Reply 3:
what miner u used? i used claymore, just need to change the config and epool then click start.bat

",[]
10146,"Date: 2017-01
Topic: best place to buy hardware
### Original post:
where is the best place to buy antminer s7's. cannot find anywhere with them in stock.thanks

### Reply 1:
You can buy them on the forum used sometimes, usually cheapest place to get em. Else other sites like aliexpress and ebay also sell albeit at a much higher price. Personally I'd just wait until someone decides to sell on on the forum and buy with escrow. Be wary of scam sites with too good to be true prices, if you're ever unsure ask the people here.

### Reply 2:
The Antminer T9 has just been released, dont know if the specs suit your needs.

### Reply 3:
HolyBitcoin has some available<link>

### Reply 4:
Those are out of stock for me, dunno what you're talking about. They have been for quite some time.

### Reply 5:
My bad. same for me but i missed it. Guess i dunno know what i'm talking about

### Reply 6:
Thanks for giving us a useful website for the miners but I'm currently looking for a place where I can get the pandaminer or similar for cheap. I don't want to buy from their website directly because it's 2.4Btc but I want something cheaper like 1.5BTC miner with the qualities of the 8 core pandaminer

### Reply 7:
And I'd like to fly and spit diamonds. Don't see that happening either.Also the Panda is for Altcoins not BTC so asking in wrong area.

### Reply 8:
I have a few s7's, willing to part with them in the 300-400 range...could easily ship within the US

### Reply 9:
Water came out of my nose while I was reading this. Thank you for the laugh

### Reply 10:
Has anyone seen any Avalon 6 for sale recently. I am looking for a large quantity.

### Reply 11:
maybe you can try to visit aliexpress or alibaba because i see in last week there is still available in stock but i don't know about the payments, if you can talk with the seller, i think you can pay with bitcoin too.

### Reply 12:
as always you can buy on amazon or ebay but carefully to buy

### Reply 13:
I've got 40 I was going to start listing on ebay soon. $300 each + shipping.

### Reply 14:
If any is intrested i sell Bitcoin Mining Farm 5X Antminers S7 with power supply.If Any is intersted can contact me on mail <truncated> Im from Serbia,possibility of payment with Btc +5%.Link on Serbian site fo sell: <link>

### Reply 15:
there so many way you can buy in the official <truncated> mch more

","[
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    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Pandaminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 6"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminers S7"",
    ""hardware_is_owned"": true
  }
]"
19498,"Date: 2014-06
Topic: batch file - automatic restart of CGminer
### Original post:
Hi!I'm just a noob with batch files (only wrote some simple ones) and now i'm hitting a wall.(already searched the net for answers...)I tried to create a batch file that would restart my CGminer every hour. Reason: sometimes my miners disconnect randomly. By restarting every hour I will minimize the loss of mined coins I already found some code for timed actions, but now I'm first trying to get some input in CGminer when it runs.I wanted to automatically type 's c y"" to restart the program <truncated> use the ""echo input.txt | cgminer.exe""but all I get is 'redirection is not supported'Is there a workaround or someone who does this in a completly different way (maybe even without batch files)thx in advance!

### Reply 1:
Try this, it's different class<link>

### Reply 2:
ok, that seems an easy solution...Feeling stupid now, with my batch-attempt thx for the info!

### Reply 3:
You also can try this <link> <link>

### Reply 4:
I CGminer users.when it was running my PC directly stuck and can not work anymore, when I restart the new normal,where lies the problem, if my PC is error?I use windows 7 x 86

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17208,"Date: 2012-07
Topic: Coding for 5970
### Original post:
Using phoenix miner, can't seem to get over 320Mhash, only using one corewhat parameters do I need to set in the .bat file to use both cores and get the maximum HASH?

### Reply 1:
phoenix 2 doesnt use command line anymore, it uses a cfg file. if you're using the old phoenix, you need 1 phoenix miner for each gpu core.Assuming 725 core speed, you should be using driver 11.12 or 12.1, SDK 2.1, memory speed ~150MHz (give or take. play around with it), aggression 12 if dedicated miner (14 if you edit registry to increase tdrdelay to something like 10 seconds. google it. otherwise tdr might trigger because the higher aggression causes the gpu to work too long on each kernel run. Doesnt hurt shares, just gives the gpu higher activity = more mhash), worksize 128, phatk2 kernel, and make sure to use bfi_int.

### Reply 2:
Okay I downloaded phoenix and the .exe file opens a command prompt so i dont know what to do, or what a cfg file is theres a folder called 'kernels'

### Reply 3:
so here i got phoenix 2, now i dont see how u use other than command line<link> phoenix.exe which opens command linephoenix.cfg which needs a program to open withplugin folder and a doc folder

### Reply 4:
you edit phoenix.cfg with notepad..

### Reply 5:
and put what, and then do what with it?where is instructions on thisMy list is as followsDEVICE 0: Cypress1: Intel core i7Platform0 NVIDIA1 AMD

### Reply 6:
is there something bad with new drivers? 12.6 driver slower ?

### Reply 7:
Wrote the config file based on the example DOC and the main phoenix 2 thread and still not working, starts up and shows [DISCONNECTED]

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8860,"Date: 2015-02
Topic: How are Thermaltake PSU Brand in mining?
### Original post:
I am debating whether to purchase an Thermaletake 850W PSU to power 2 of my Antminers. I had good performance with Corsairs and used them in all my rigs.Just wondering how Thermaltake performs? I know they are popular in the overclocking world and might be good builds?

### Reply 1:
My computer had some 3 years ago a Thermaltake PSU. It was very nice and quiet.One day, my son (was about 1 year old) clicked the power button a few times. The PSU, and the motherboard too, both got burnt.Guess what, did I buy Thermaltake again?

### Reply 2:
some are okay . the exact model helps

### Reply 3:
I had an old Thermaltake 430W that I ran a pair of 5770 GPUs off in a rig two years ago. It held up for most of a month (a very hot July month) before smoking out and I replaced it with a server PSU. I couldn't complain about it, but like the above says, it's probably going to depend on the model.

### Reply 4:
SO I guess they are good for basic computing needs where it uses around 100W max. Not 80% of the full load?

### Reply 5:
They are hit and miss. They also change OEMs on a model without warning, so what was once a good PSU might now be a bad PSU, or vice versa. A good rule of thumb would be to avoid it unless you can find a positive review of it on jonnyguru.com

### Reply 6:
I had a 500w one, TR2, I think. After asking it to give me about 350w 24/7 on a GPU rig it died on me after a month or so. I tend to stay away from them.

### Reply 7:
yeah that is a garbage model. they have some expensive ones that are okay.

### Reply 8:
What about the ThermalTakeSmart Series SP-850M ?

### Reply 9:
<link> 119.99<link> 30 usd rebate = 139.99 to me the evga g2 is better dealit can do 2 s-5's at stock or 2 sp20's underclocked to 1175

### Reply 10:
<link> 850M is the same Channel Well PUQ-B platform as the Corsair CX850M. They're literally the same supply. It's not a bad supply, it's not worth $120 though.If you're in the US, you can't beat the 1300G2 that Philip posted for that price.

### Reply 11:
I'm actually from Canada and here power supplies are highly overpriced. The only cheap ones are the crappy 400W PSUs.

### Reply 12:
Thermaltakes are good, I had a few and there were no problems. I still have a TT in one of my computers, a modular 630W. If you're looking for a good inexpensive brand try OCZ, I had one of their models for almost 5 years and during that time changed the parts it powered at least twice.

### Reply 13:
What Antminers are you looking to power, BTW? S5s?The 1300W EVGA is a tougher sell at $240. If you're running two S5s, you might be better off getting two of the $78 Thermaltake SP-750P PSUs at NCIX. Efficiency probably won't even be that different in this case, the TT will do 87.8% at 560W output and the EVGA would 89.2% at 1050W according to test results on the net. I'm normally a proponent of going with the better made bigger supply, but in this case I don't think the EVGA is $80 better than the two cheap ones.

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11814,"Date: 2012-02
Topic: CGMiner Reset GPU To Default Clocks Upon Quitting?
### Original post:
Pretty straightforward question in the title.Is it possible to do this?As it is now, I've been manually resetting my GPU back to default before qutting. That or I open Trixx and reset using that.Just wondering if there's a way to automate it by cgminer before it closes it self since I just got a 2nd 5970 and when the 3rd comes back it'll probably be a huge pain doing so everytime I want to play some DoTA2, SC2, or whatever else.

### Reply 1:
I thought Cgminer returned to default clocks upon quit?!?

### Reply 2:
GPU-Z seems to show that the clocks remain at whatever I had them set to by cgminer after quitting.I've also closed GPU-Z and re-opened it as well to see if maybe it didn't update the readings for whatever reason.

### Reply 3:
cgminer reads the profile on startup and saves it. When quitting it's supposed to return it to that saved profile. It works on linux, but you know how it is with windows... sometimes it just won't do what you tell it.

### Reply 4:
I just have it set up to run again in a .bat setting the clock speeds to normal. Like <truncated> -l 10 -o <link> -u <truncated> -p abc123 -o <truncated> -u Garr255 -p asdf -o <link> -u garrett -p yayforbitcoins -o <link> -u garr255.garrett -p slushy -I 9,4 --gpu-engine 877,877 --gpu-memclock 350,350 --gpu-fan 85,85 --temp-overheat 80,80 --temp-cutoff <truncated> -l 10 -o <link> -u <truncated> -p abc123 -o <truncated> -u Garr255 -p asdf -o <link> -u garrett -p yayforbitcoins -o <link> -u garr255.garrett -p slushy -I 4 --gpu-engine 725,725 --gpu-memclock 1000,1000 --temp-overheat 80,80 --temp-cutoff 85,85pause

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9033,"Date: 2015-04
Topic: At what clock rate does an AntMiner S5 mine with peak efficiency?
### Original post:
At what clock rate(s) does an AntMiner S5 mine with peak efficiency, where efficiency is measured in terms of hashes / Watt?Has anyone here performed such a measurement? If so, could you please post your data? thanks

### Reply 1:
Good question. I have some, ran some brief tests and did not see significant gains so I just left at stock. I am sure those S5s have some room. I just changed frequency. I am sure it is a combination of volts and freq but just too time consuming for only a couple units. If I had a 1000 units I would be tweeaking every setting. So If I spent 100 hrs figuring this out, I might not want to just share that info for free.BUT I hope someone does. Just give us some idea of potential. Like what is max hash and the power consumption at that rate.look forward to some info

### Reply 2:
You can calculate it yourself.Hash Rate: 1155 GH/s Power Efficiency: 0.51 J/GH (at the wall)Power Consumption: 590 W (at the wall)Hash Rate: 1300 GH/s Power Efficiency still the same : 0.51 J/GH (at the wall)Power Consumption: x W (at the wall) x = 664 W

### Reply 3:
very very flat. .49 with 900gh say freq 250.51 with 1326gh say freq 412 these are from memory I used high quality plat psu's and an evga 1300g2 to test.

### Reply 4:
The efficiency doesn't change as much with the frequency settings as one might like. I think it is more useful as a heat management tool.

### Reply 5:
Efficiency doesn't change much with clock speed because although dropping the clock reduces power consumption, it also reduces hashrate, and both are approximately linear effects. The way to boost power efficiency is if you could also undervolt- something that apparently does not work well at all on the S5.The BM1384 chip on the S5 theoretically allows significant undervolt but even apart from the difficulty of finding high efficiency 8-10V power (required as the S5 is a string miner) the S5 has something which evidently just doesn't work if you drop the voltage much. Sidehack has said he suspects the (chained) clock line, at any rate some of the chained signals and the related I/O voltages are most likely suspect. As far as I know no one has taken the time to mod an S5 to be able to undervolt or could tell you what is going wrong for certain.--novak

### Reply 6:
My results are 0.44w/GH par 11.1vUnder 11v. Miner starts but dies after a few minutes.At 10v and lower, it doesn't start hashing., but you have access to the web interface.Stock efficiency with the same PSU is 0.54w/GH

### Reply 7:
Yeah I don't think I've heard anyone claiming they would run under 10.8V. You have access to the web interface because it doesn't affect the controller it's probably BM1384 chip I/O of some kind or other.We have a BM1384 on our breakout board running at 0.625V right now, which would be 9.375V into an S5. It's not a chip limitation, it's a miner design limitation.--novak

### Reply 8:
I agree heat and noise at the higher frequencys

### Reply 9:
Good to know that it's the design. Maybe a simple trick could allow lower voltage to the S5, then.I'll have a look at an S5 board. I have one to RMA anyway, so it'll be removed from the unit today.BTW, if the design wasn't good for lower voltage, it could have been upgraded for later batches, since it seems minor changes were made like changing the data conector from 16 to 18 pins...

### Reply 10:
We have poked at them a bit but done no real work to try to underclock. I wish they had fixed it later on, I'm fairly sure it is not that big of an issue- most likely some of their chained signals don't work perfectly if the input voltage is too low. Since the comms on the S5 are chained if one chip in a string drops out they all do.--novak

### Reply 11:
I suspect the s-6 will allow good numbers which is why they did not alter the s-5 to allow for a 10 volt psu to attach to the s-5 and work.

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3029,"Date: 2014-03
Topic: [1THS OPEN - Group Buy] LIGHTASIC LA1THS：USD5000 only, shipout from March7.
### Original post:
LA1THS 1000GHS 950W bitcoin miner,Groupbuy open USD5000 only, shipout from March7 200pcs availablePricing will be: LA1THS 1-9 usd500010-50 USD4950>50 pls PM mesend out on March7th.Payment is BTC only. and the ETA of this batch is March7. ths price is included the dhl express to worldwide place.here is the BTC address for this groupbuy: <truncated> sha256, 950where is the video:<link>

### Reply 1:
LA1THS = 5000$ = 5950$ with VAT = 43435x Ant = 3886$ = 4624$ with VAT = 3375 plus PSUboth never ROI, even the S1 because of taxesbut whats the declared value on your package?

### Reply 2:
Waiting for Factory to cut the price eaven more The unit itself is great. I have one.

### Reply 3:
price drop every week. now, its usd5000, include dhl express. ship out from march7.

### Reply 4:
our model has psu inside.and the value on invoice is according clients requirment. it can be usd100 only.

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16830,"Date: 2011-07
Topic: 11.7 best download?
### Original post:
My new mining rig - 11.7 using - crashes even when nto mining after half an hour.Before trying to downgrade - anyone can point me to the best version for trying getting 11.7 stable? I hear there is a preview and a bbeta, but have no idea which one is better.Thanks

### Reply 1:
It's not stable yet. Get 11.6 and see if you're having issues with that.

### Reply 2:
<link> it really is 11.7 (just named as 11.6b ))

### Reply 3:
well i have an issue with a corrupt mouse cursor on one machine so I think I will try this, but will this hotfix help the dummy plug issues?

### Reply 4:
Try the preview drivers of 11.7. Or you can wait, July is almost over and 11.7 is just right around the corner. Although I have been using 11.7 Preview Drivers and had no problems aside from the benefit of using NO Dummy Plugs. =)

### Reply 5:
When using 11.7 with no dummy plug, can you use msi afterburner to overclock? When I run afterburner, I can't seem to apply any of the overclock changes I make. If I put the dummy plugs in then afterburner works.

### Reply 6:
You have to set the unofficial overclock in the .cfg file: <link> you may have more luck using both afterburner and Trixx as I have. De-synchronize the cards and set the speeds separately.

### Reply 7:
Yeah, I did the unofficial overclock. But when I run msi afterburner, it comes up with 0 mhz for gpu, 0 for memory. When I move the slide to the right and click apply, it just goes back to 0 mhz and 0 speed for memory.

### Reply 8:
Just use Trixx to OC and afterburner to monitor, it's what seems to be the best.

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20515,"Date: 2015-07
Topic: Setup full node on antminer?
### Original post:
I want to know what you guys think if an antminer can run a full node.Can i add an usb stick to have enough space for blockchain? Any problems left? Cpu and ram? Would be cool to see antminers as full nodes

### Reply 1:
How about version 0.11.0?

### Reply 2:
Not a hope in hell.

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13301,"Date: 2014-11
Topic: M's Ant (S1/S2/S3) Monitor v3.7: alerts,auto/mass/scheduled reboots/multithread
### Original post:
Great I'll test it out right now!!!But my refresh was set to 300 seconds not 30. You can see the picture that it is showing 266 seconds until next reboot.

### Reply 1:
Well.. that's what happened. And I read your screenshot wrong. Regardless it should be fine now.M

### Reply 2:
I discovered about 10 minutes ago as well 2 of the mners (one of which was the one giving the error) had the same hostname. I doubt that makes a difference, but I havechanged it to what it is supposed to be. I'll let you know how it goes either sometime tonight or when I get up in the morning when I see how its doing.Thanks.

### Reply 3:
I set it to reboot every upcoming hour for a few hours in a row to make sure it worked. Hopefully I got it all right this time. M

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7066,"Date: 2014-02
Topic: Broke Internet on Antminer S1
### Original post:
Trying to get the WiFi set up for the Antminer S1. Hooked up the antenna, but I couldn't get it to connect via wifi.I haven't changed any of the WAN settings, but I went into LAN and checked to bridge the LAN with WAN and WWAN and put in the wireless info. In the admin page it showed LAN WAN and WWAN all 3 connected on the addresses .1.3, .1.6, and .1.99. Rebooted the machine, now it seems bricked.I can't get at it from its static IP address at .1.99, I can't get at it from either of the two dynamic IP addresses the DHCP is giving it (currently .1.3 and .1.6). I can't seem to administrate it or fix it in any way, and it's not mining.Not sure what to do. Did I just ruin the machine? ;-;

### Reply 1:
Reset to default button. Support thread here: <link>

### Reply 2:
Thanks for the follow up dogie... Is that the small black button up against the heat sync left of where the antenna wire plugs in? Do I have to hold it for a certain amount of time or power it on and off while holding it? Simply pressing it or pressing & holding for 5 seconds doesn't seem to reset anything.

### Reply 3:
sorry, i'm not getting this. Pressed the button labeled S2 on the antminer, rebooted it and set my router back to 192.168.2.1, but i'm still not seeing the antminer at either 192.168.2.1 or 192.168.1.1. Not sure if the reset isn't working or if it's something else.

### Reply 4:
WHEW, ok, the reset button seems to be broken on my machine or something because it did nothing, but i did a hard reset and it sounded like the computer had the equivalent of a heart attack; all the lights shut off and it got dead silent the instant i tapped the paperclip to the terminals, then it came back alive and jumped back on the network at 192.168.1.99Thanks for the idea Dogie, i didn't even think to look for a way to do a hard reset

### Reply 5:
Glad its working now. For others finding this thread, most miners need a combined soft (button) and hard (power off + on) reset to get back to default.

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12108,"Date: 2012-11
Topic: CGMINER GPU FPGA overc monit fanspd RPC stratum linux/windows/osx/mip/r-pi 2.9.1
### Original post:
Request for help...I have 2 CM1s mining in Australia due to high elec costs...Over the last few weeks I have noticed that they only mine for between a few minutes to a few hours (8 tops). Having said this, the best I have done is 2 days str8 mining.They just appear to drop of the USB line with a ""boink"" then cgminer reports they are ""OFF"". I have been using cgminer 2.7.0 > 2.8.4 on a Win 7 system with the same reuslts...could I please get some stability help. (whilling to sheel out BTC for help)

### Reply 1:
Yeah that's what happened to me as I have mentioned before back around July I think it was.My BFL half died (one FPGA stopped working randomly then long term then random ...)Then eventually it stopped working completely so I tried to reflash it with the 880 bitstream ... to try kill it It's been fine hashing away on that since then (just a few throttles on hot days a couple of times)So yeah reflash is also another option if the BFL is actually playing up due to that.That's also a rather simple thing to try in windows or linux.

### Reply 2:
The base Icarus has no MHz control or temperature reading.Thus if there is a heat issue, cgminer won't tell you about itI've no idea how to ask a CM1 for the temperature, and if you send it to an Icarus, it will not work- nor any idea what problem that would cause the Icarus.Someone was gonna send me a CM1 a while back but they changed their mind.So I don't have one.Back when CM1s were first around I wrote the basic support of devices with varying speeds that work like an Icarus(since I could test it on an Icarus also and get either the expected results or the expected failure)- with options about expected clock speed and FPGA counts to ensure the hashing is correct and baud rate since early CM1 were 57600.End of story

### Reply 3:
Did you try using a (powered) usb hub?

### Reply 4:
No powered USB hub as the gigabyte MB has 3*power USB ports. I do have my eye on a nice Dr who powered hub though...will give it a tryHave you found this to be a good solution on ur rigs?

### Reply 5:
It is only spring here so hope the heat is not the issue....I will try cycling back to a 200MHs stream though

### Reply 6:
Yes, I had problems with a high-S/N board. After connecting it via a (powered) USB hub it worked great. The problem isn't that the USB port of your mainboard can't provide enough power, but that there seems to be some kind of <truncated> going through the USB cable and to the mainboard, making the USB link unstable. The USB hub should ""protect"" the mainboard.

### Reply 7:
Latest cgminer from git doesn't seem to want to do long polling in conjunction with p2pool any more. Pastebin link to log: <link> (note line 46, where the long polling URL is sent)After reverting to 2.8.7 (git checkout v2.8.7), long polling works again.

### Reply 8:
Thanks, will investigate.

### Reply 9:
thnx...sounds like a good excuse to acquire a DR Who Tardis 4 port powered hub....

### Reply 10:
Confirmed, same there on 2.9.1Code: cgminer version 2.9.1 - Started: [2012-11-07 <truncated> (avg):11.27Mh/s | Q:3 A:0 R:1 HW:0 E:0% U:0.0/mTQ: 0 ST: 1 SS: 0 DW: 0 NB: 1 LW: 0 GF: 0 RF: 0 WU: 0.5Connected to rav3n.dtdns.net without LP as user toy.gpuBlock: <truncated> Started: [15:42:23] Best share: <truncated> management [G]PU management [S]ettings [D]isplay options [Q]uitGPU 0: 61.0C 48% | 12.79M/11.27Mh/s | A:0 R:1 HW:0 U:0.00/m I: <truncated> 15:42:22] Started cgminer 2.9.1[2012-11-07 15:42:22] Loaded configuration file <truncated> 15:42:22] Probing for an alive pool[2012-11-07 15:42:23] No suitable long-poll found for pool <link>[2012-11-07 15:42:47] Rejected b636ebc2 Diff 1/1 GPU 0

### Reply 11:
I am also getting that same long poll error when connecting to hashpower.com. With 2.8.7 long polling works there.

### Reply 12:
Working nicely.Have GW, GBT & Stratum pools all up and running.Something in the order of:11,000% efficiency on Eclipse (GBT + Var Diff)1,800% efficiency on MaxBTC (GW)550% efficiency on Ozcoin (Stratum)Get VERY large discards on GBT though, on the order of 1000%Roughly 30% on Stratum and GWKano, did you said you're gonna add data counters to the pools? That'd be very interesting to see.

### Reply 13:
Yes I'll add data counters to the pools soon ...I'm working on some MMQ stuff at the moment.However ........ 11,000% efficiency?What GH/s are you?That seems too high ... though that is probably on a high hash rate?I'm of course referring to the issue of work age and the negative affect on BTC.

### Reply 14:
The switch between regular and GBT pools is still not ideal and the GBT work on switching to it can be stale for a while. There is a fix in git for this.

### Reply 15:
Yep, that high It factors in the var diff shares (2.5 ish), so it's 'no of diff 1 equivalent shares'/'get block <truncated> at a little over 5GH/s.

### Reply 16:
Hmm, had this happen a c<rest of thread truncated>
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8957,"Date: 2015-03
Topic: Max power out of a Dell Z750p / N750p Power Supply?
### Original post:
As title asks, what is the max people have gotten away with using these power supplies?I run then just around 700watts and they are tanks. IMO one of the best bangs for the buck, but once for about an hour, I didn't realize that it was running at 880W.Nothing happened, the SP20 was happily hashing away, it wasn't even warm to the touch, but just wondering.Thanks

### Reply 1:
I had no trouble pushing a pair of overclocked S1s off a PSU for a couple months. When I was <truncated> I saw trips anywhere from 75 to 80A output depending on the specific model. 75A at 12V is 900W so you were probably pretty close to the PSU dropping out.

### Reply 2:
What sidehack said.You didn't harm it, server PSUs are built like tanks. Where did you get your reading for 880w? At the wall? If so, that's not the PSU's output in DC watts, there's an efficiency loss to factor in.

### Reply 3:
Yeah that was on a Kill-a-watt.So if I run them for a bit sometimes at past 800watts it's still ok?What about running an EVGA 850W G2 at right the 850-900 watt limit? Is that ok? I know the 1300 G2's are fracking tanks, but just thought I'd ask.

### Reply 4:
Absolutely fine. I'm not familiar with your particular PSU model, so I'll assume 90% gold efficiency running on 240v (figure 88% if using 120v):880w * 0.90 = 792w being used by your hardware800w * 0.90 = 720w being used by your hardwareYou could run either calculation 24/7 without issue.For the EVGA:900w * 0.90 = 810w being used by your hardware (240v input)900w * 0.88 = 792w being used by your hardware (120v input)I'd be fine with running the EVGA full blast at 850w (965w at the wall on 120v)Edit: Just realized you're using 120v if you measured with a Kill-a-watt. Ignore my 240v numbers.

### Reply 5:
Ohh.. so if the kill-a-watt says 800Watts, it's only really using 720watts out of the power supply?So the real limits on an 850Watt EVGA SUperNova G2 is about 930+- watts at the wall?This is all expecting a 90% efficiency PS.

### Reply 6:
Here's a review for your EVGA: <link> is the reference when it comes to PSU reviews.The important information:What you want to pay attention to is Test #CL2. That's a test which maxes out the 12v rail, without any use of 3.3v or 5v, and that's what mining represents.You can see that while pulling 837.9w of DC power from the PSU, the PSU its self was pull 963.4w of AC power from the wall. That gives the PSU an efficiency rating at almost (he usually maxes them out, not sure why he didn't reach 850w in this review) full 12v load of 87% with 117.9v of input. He's running off of a 20A outlet, so if you're using a 15A outlet you can expect slightly lower voltage. I'd guess about 115.5v.Using the 87% figure, we can calculate that850w / 0.87% = 977w measured at the wall. That's what you want to stay under, 977w. I only recommend running 100% load with top quality units, which your EVGA is. Lesser PSUs will croak. If Super Flower (The OEM of your PSU), Seasonic, Flextronics, Delta, etc made your PSU, it's capable of running full out 24/7 for the duration of it's warranty period. Full out actually decreases as time goes by, but that's another subject for another time. Average PSUs I wouldn'<rest of post truncated>

### Reply 7:
I have used the evga line of g2's they prefer just under the watts listed if you are using a kwatt at the wall.the 1300 g2 will do 1320 on a kwatt meter but after 30-60 days gets spotty. It will do 1230 for months on end.the 1000 g2 will top out at 1010 or 1020 but after 1 or 2 months not work as well. It will do 970 for months on end.the 850 g2 will top out at 875 or 880 but after 1 or 2 months not work as well. It will do 820 for months on end.Prelude shows the Jonny guru review on it. Notice when maxed it dropped under 12 volts. I try to run my evga's 5% -10% under the number it says1300 at 1170 on the kwatt1000 at 900 on the kwatt 850 at 800 on the kwattI have never melted or broken and evga psus running with this method.As for server psus. I am doing a review on three of them along with the included breakout boards.I am testing the HP 1000 model but it is rated for 850 at 120 volts. It can do 1200 watts for 5 minutes then it turns off. (I thought It was the 1200 watt model)So running it 1200/850 rating and no damage it just powered off.<link> this is a review of the server.

### Reply 8:
Wow nice. So on my Dell Z750P and the EVGA 850 G2's, I have plenty of 'wiggleroom' if I need to.I don't use it per say, but good to know, I can trust them at those levels.*although the server PSU's are used, so who knows how much mileage they have to begin with.*Thank You both.. Again.

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12119,"Date: 2012-11
Topic: Help needed cgminer
### Original post:
With cgminer what would be the best Catalyst APPSDK combo version to use for the 58 60 and 70 series GPU'sThx in advance for anyone helping.

","[
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    ""hardware_name"": ""60 series GPU"",
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  },
  {
    ""hardware_name"": ""70 series GPU"",
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11693,"Date: 2011-12
Topic: Installing Catalyst etc on Windows XP?
### Original post:
I do not have enough licenses except for a retail Windows XP Home. Wonder can it be used to run bitcoin mining with Opencl, Catalysts etc installed? It seems that such software only support Vista/Windows 7. Anyone tried on Windows XP and running fine?

","[
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20085,"Date: 2014-12
Topic: Need Help Adding auto start & run in background for BFGMINER 5.0.0
### Original post:
I have added the following in my target section -S opencl:auto -o <truncated> -u myuser101 -p littledickjoe --set-device 5I click on the bfg icon and I'm mining, cool it works on my PC. But now I'm trying to expand...stealth fullyI plan on having a copy of bfg on a thumb drive and upload my goodies everywhere.I'm sure there's a pro somewhere Please send some wisdom or hyperlink me into the right direction! Thank You.

### Reply 1:
You mean want to mining on other people PC without the owner permission?NO <truncated>

### Reply 2:
ok so i got it to start automatically adding a string line <truncated> up auto but how to make this run in the background?

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16364,"Date: 2022-11
Topic: Is crypto winter just another name for crypto crash?
### Original post:
I have a basic understanding of what a crypto winter is. I've also heard that every crypto winter cycle is followed by a rally. Can someone explain what it is and how it can be used to determine the best time to buy miners?

### Reply 1:
Just look at the chart for the whole timeline.One example is this one, I don't know if I'll be able to insert the image here, however, the original link is <link> this is a logaritmic scale chart, you may want to crosscheck with another price charts!I see a cycle from halving to halving. Others see it from ATH to ATH. It doesn't matter, still a ~4 year cycle.In second cycle the crypto winter was around the first 2/3 of year 2015. In the third cycle it was pretty much during the 2018 autumn and 2018/2019 winter.The longer the ""depression"" lasts, the more the people call it crypto winter. But overall it's the worse part of the bear market, it's the period the price is the lowest in such a cycle and doesn't give any signs of recovery. It's the most depressing part for holders, it's the period some miners may be disconnecting their gears (for shorter or longer periods of time).I am not an expert, but this is how I see it.Also according to this chart, one year before the halving the price is already on a healthy rise. Maybe that's the moment you want for buying gear? I don't know, I certainly cannot give advise in that one. All this is more a price <truncated>

### Reply 2:
Asics are still very expensive, and the network hashrate is still growing<link> is not much time left before the halving, if we assume that now the cost of mining 1 bitcoin is 15,000 dollars, then in 18 months the cost of bitcoin mining will increase by 2 times.And the price of electricity is constantly rising.I think that ASIC investment is not the best solution for small miners.

### Reply 3:
Winter just like the season is a period where nothing grows due to the extreme weather, so a crypto winter will mean a period where it will be difficult and unfavorable for crypto, so investing in crypto at this time, you should not be quick to expect growth. After winter is followed by spring where plants begin to grow, the rally that follows after the crypto winter cycle can be attributed to the same characteristics of the spring season.

### Reply 4:
I don't have much knowledge about crypto mining but crypto winter is simply defined as the season of the crypto market's bearish trend. However, crypto winter also impacts the mining difficulty because mostly during the crypto winter mining difficulty is always down but if the mining difficulty is high it will suppress the crypto winter trend and generate a bullish trend.Mining is always profitable during crypto winter because most miners consider crypto winter mining not to be profitable since they need to sell their earnings to fix bills but if you're going to mine for future purposes while to fix the bill using another means the current unprofitable mining earning will be in your favor when it bullish market.

### Reply 5:
The price of miners these are pretty cheap from Bitmain and Canaan units. Why would you wait or predict the exact time to buy miners? Today is the best time to buy units from Canaan 1126 pro is around 400 to 500 which is cheap for 60 to 68th/s. If today is not profitable to mine you can also hold these units until the price of Bitcoin gradually rises again.So the best time to buy miners is when the price of their units drops a lot or is very cheap just like the units from Canaan.

### Reply 6:
yeah dca calls for buying miners now.even sit on some hoping for a solid uptick.

### Reply 7:
Crypto Winter is just the coolling down of the Hype Phases Crypto loves to go thru. For me BTC is just there where it should be, still ist too old and LTC is way faster. No rewards to give out.

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8321,"Date: 2014-08
Topic: Antminer S1 Having nework issues (Need Help)
### Original post:
Hey let me start out by saying im new here so if i've done anything wrong with this post feel free to correct me. So now onto the point:I've been using bitcoin for around a year now and I have recently gotten interested in mining so after doing some research I decided to pick up an Antminer S1. It arrived around a week ago and after some trial and error i got it hooked up and was able to login to luci. Just to let you know my miner came with a 192.168.1.99 sticker not the typical 192.168.2.xxx. I setup my pool info (i'm using slushs pool) and then plugged the miner into my Ethernet switch which runs directly into my modem and restarted the miner. No matter what I try I cant get the miner to start hashing i've tested the Ethernet cable and it checks out with a solid connection. I've been trying to get it to work for the last week with no success so Im trying my luck here. Any help will be greatly appreciated.Thanks!

### Reply 1:
Did you create a worker at Slush?Pool <truncated> <truncated>

### Reply 2:
The other thing I was thinking is that maybe you're not using the correct settings under WAN. I'm assuming that you entered your gateway and DNS server?

### Reply 3:
Thanks for the reply bmoscato!Yes I created a worker and password on slush's and checked the same username and password on my computer to make sure they check out (which they do). The issue i'm having is my miner is not connecting to the internet via ethernet. How exactly do I configure the correct settings under WAN? I tried following a guide I found to no avail.

### Reply 4:
Do, you know your default gateway? If not, log into your PC (assuming windows), go to the start button and in the box ""search programs and files"" type CMD, this will open a DOS window... From here type IPCONFIG (does not have to be caps), note the default gateway (mine is 192.168.1.1).Also enter 8.8.8.8 for your DNS settings on the S1.

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9862,"Date: 2016-06
Topic: Antminer S7 - 4.73 Th/s Want to but Please sugesstion
### Original post:
Hello I wan to buy Antminer S7 - 4.73 Th/s Need to know about few things[I have very little Knowledge in mining, can you suggest me where to read about it?]1. I have Solar panel Installed so Power cost is Zero, Can you Tell me What is its Expected daily Mining Capacity?2. If there is Cost is .13$ per KwH what would be my profit? If I want to Buy a GPU for Altcoin mining Which will be Best for about 300$ or Less amount? Above two question are applied to this question too

### Reply 1:
The bitcoin mining calculators are your friend, I dont know what kind of wattage your solar panels are making but i think even at 13 cents a kw your still going to have quite high mining costs.According to this you will be earning 1 btc every 3 months but you need to take into account that we have a halving in less than a month. Id be inclined just to spend your money on btc rather than mining gear.<link> you need to take into account also the price of the s7. I also probably wouldnt bother with gpu mining unless your wanting to get a good gpu anyway since the only coin im aware of that was worth mining was ether and thats possibly coming to an end.

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23472,"Date: 2021-03
Topic: S17e hashboard problem after changing pools
### Original post:
While I don't like Slushpool at all, I don't think it's the cause of your problem, it's likely just a terrible coincide. Code:2021-03-09 <truncated> Chain 0 only find 134 asic, will power off hash board 02021-03-09 <truncated> Chain 1 only find 0 asic, will power off hash board 1The S17e uses 135 Asics on each hashboarrd, your board 0 (usually the most left when facing the miner's front-side) shows 0 asics, and chain 1 which is the middle board is showing only 134 (so it's missing a single asic), this problem is very common with all the 17 series, the heatsinks solder they use on those is pretty bad and eventually, chips start dying.There is a good chance that your board 1 will come back to normal after a couple of reboots, chances are slim for board 0, some times people get lucky with custom firmware so you might check if any trusted devs have the S17e on their list.And please, use the code tag when posting Kernel logs.

### Reply 1:
Hello, Thank you for your response! So I started switching out the cables on the control board and two boards started working again and one only found 134 asics. I am upgrading my firmware again to see if it fixes the problem. When I switch the cables around, a different hashboard only finds 134 asics, not the hashboard from before which is weird. I will include the log in a second.I will also add the code tag, sorry I couldnt find it before hehe.

### Reply 2:
This is normal nothing is weird about the result, it's a bit confusing but let me try to explain.Board 0 is badBoard 2 is goodThe control board connects to hash boards this way0 control board > 0 hash board >Bad1 control board > 1 hash board >NA2 contorl board > 2 hash board >GoodSay you switchboard 2 and 0, the reading on the contorl board which is what you see in the kernel will be0 control board > 2 hash board >Good1 control board > 1 hash board >NA2 contorl board > 0 hash board >BadNotice that despite the fact the reference on the control board has changed, the control board numbering remains the same, board 0 is still bad, if however, you get this0 control board > 2 hash board >Bad1 control board > 1 hash board >NA2 contorl board > 0 hash board >GoodThat's good news, it means both boards 0 and 2 are fine and something is wrong with the wires or the PSU busbars, and that is very, very unlikely to be the case, so good luck.

### Reply 3:
Okay so I think I figured it out... Ive tested multiple times now and it seems like one of my hashboards is only finding 134 asics.. is this repairable? I am currently in China so if it is repairable I would have to get it professionally soldered.. or is there something else I can do to did this? And is it normal that this happened after I powered it off and powered it on? Because it was working perfectly fine before I powered it off which is weird.

### Reply 4:
I believe China is the best place to get your miners fixed, check Zeusbtc they have repair centers there, you could also send it to Bitmain although someone mentioned they told him they can't ship the gear back and they offered him some coupons instead, and a buyer for those coupons lol.Yes pretty normal, it will work sometimes and won't on the others, eventually, it will just die.

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13341,"Date: 2015-01
Topic: MobileMiner and AntMiner S3
### Original post:
Sorry if this is covered in another thread but I couldn't find it.Is it possible to use my AntMiner S3 directly with MobileMiner like my Minera rig? I have the S3 running on MobileMiner now through MultiMiner but I'd rather not rely on my PC (which isn't always on) to run it.If there is something I can add to the cgminer config or somewhere else please be specific on what to add and how to do it.Thanks in advance for any help or advice!

### Reply 1:
There are several solutions for interfacing with MobileMiner - MultiMiner is just one option:<link> you are technically savvy your best bet may be <truncated> It uses Python and is cross-platform so you may be able to, in theory, run it right on your S3 controller. However I know they run a very light OpenWRT OS so it may not meet the requirements.You could try using a Raspberry Pi and Minera but I'm honestly not sure the state of running Bitmain hardware with a non-Bitmain controller. The last I heard the AntMiner driver requires a *nix kernel driver. You could try asking in the Minera thread:<link> you can get something running on the OpenWRT controller shipped with the S3, or power the S3 with a different controller, you'll need some sort of other PC (Windows or otherwise) on your network to do the monitoring.

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13618,"Date: 2019-06
Topic: Antminer S9 newest firmware (June / 2019)
### Original post:
I , as many others , was too reckless and went ahead like an IDIOT and installed the 2019 firmware for a large number of my gears, I don't have much use for SSH but i still hate the fact the bitmain locks me out of my my gears, now if you have a few miners and have the time to Sdcard-flash them using braiins or revert back to an old firmware then that's awesome, however if you are a lazy person, got too many gears, ain't got no time for all that shit , then you might consider this new update.It still locks SSH access ""obviously"" but they added some features in terms of <truncated> voltage and/or frequency, of course nothing like braiins but something that is better than nothing.here is how the new settings look likeImage above and info below are taken from Bitmain's website > <link> sure you read the warnings and all those stuff before trying this firmware.I have not measure power consumption on these settings ( it does not really matter to me) but overall I have tried it on a few miners, with the +1th and +2th and it seems to work fine, temps have increased of course, but now getting an average of 15th on the old 13.5 miners which is great if you ask me.I am not encouraging you to<rest of post truncated>

### Reply 1:
It works fine on majority of my miners. S9j works perfectly (+2TH without any problems, even temperatures seem to be ok). However few S9s and T9+ could not start hashing after upgrading and I had to revert it back to old version (the traditional way of flashing through browser would will allow you to revert only to firmware versions with signature on them and therefore I had to use SD card flash,which worked for me).

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    ""hardware_name"": ""T9+"",
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7983,"Date: 2014-06
Topic: Official TerraHash refund request thread
### Original post:
According to my calculations at least 18% of the people that pre-ordered with terrahash have requested a refund or cancelled their orders, In addition many of you have or are in the process of selling your pre-orders.This thread is all about getting our refunds from terrahash, if you have requested a refund or plan to or are considering it, please post here. In addition, those of you whom are selling your pre-orders due in part to the way that terrahash conducts themselves, feel free to post as well.Good luck to us all!

### Reply 1:
Maybe if TerraHash would have been active like they are now I would not have canceled.What the hell were they doing for 3 weeks after they built that first K16.Seems a little weird they didn't do anything until the threatened mass mutiny. At this point they should just refund the ones that have requested.TerraHash has a chance to show their honesty and professionalism by refunding those that have requested.

### Reply 2:
FTC complaint filed:Feel free to file yours today!<link>

### Reply 3:
Completely agree with you fasmax

### Reply 4:
Looks like their designer is looking for new work, could he be quitting? was he part time or full time? Was this a contract? inquiring minds want to know!<link>

### Reply 5:
Is TerraHash not cancelling our orders because they are planning to send us the hardware we ordered?Or are they holding our money as long as possible to punish us for <truncated> they just do the right thing and give us a refund as soon as they can.Other people are watching their behavior and use it to make decisions about who they do business with.

### Reply 6:
My best guess is the <truncated> spent all of their money on ordering parts, opening an office, etc, etc, then had to pay back cloudhashing $100,000+ unexpectedly and is left with little to no funding, and at this point is just stalling all of us trying, praying and hoping that something breaks their way.An article[1] that I read recently (see below) points out that Justin Reynolds the CEO of the company as outlined in the article, has been trying to raise funds for the last 8+ months with little to no success.To me, their silence and the way that they treated knightlife999 on his visit smacks of evasion tactics.[1] <link>

### Reply 7:
Interesting article.From the article I found this to be a little odd.""He further said that company has not finished the design of the custom board yet, but is willing to work with others in the community working on an open design.""Should of said we are waiting for BkkCoins to design the custom board.

### Reply 8:
I read that part as:They originally started to design their own board but was unable to finish it for some reason, or realized that they would not be able to do it and was putting the word out that they wanted to work with BKK.(I wonder if the timelines match up, how long has BKK been working on the Klondike?)

### Reply 9:
I found these fun places to report terrahash to, feel free to do so as well.<link>

### Reply 10:
If you wanted out of a business relationship and wanted a refund, your telling me that you would just sit back and allow them to steal your money? No you wouldn't either.Those of us that have asked for refunds are not asking for anything unreasonable, just cancel the order, refund the money and be done with it.

### Reply 11:
Looks like the folks over at reddit agree with me:<link>

### Reply 12:
I think making this thread was a good idea so as not to spam TerraHash.I don't have much more to say at this point. Next week I might ask TerraHash again on his thread, for a refund.If that is being a ""prick"" sorry.

### Reply 13:
As I stated in the main Terrahash thread, I request full refund for my order payed with BTC and I got exactly same denied reply as everyone else This really sucks for us that used BTC for payment ... I guess for paypal users may be a chance using claim.

### Reply 14:
I think that big drop in the price of BTC the other day was TerraHash cashing in.Hopefully you either get your BTC or the hardware.

### Reply 15:
For those of you that are jumping ship from TerraTrash, The Addiction guys(Tyrion70 && BlastBob) are starting a 3rd group buy for KnCMiner 400GH/s Jupiters. So far the group buy owns 20 Jupiters @ 400GH/s each, totaling 8TH/s of bitcoin mining fun.<link>

### Reply 16:
well, I finally got my refund today via paypal, terrahash didnt even bother replying to the claim.glta

### Reply 17:
They never responded to mine either, just threatened me in email to close it. Luckily started mine a while back so have my refund as well. I jumped ship when they never provided video they promised in a day. Will be going with a different company or group to get it for sure. Thanks BBK for all your hard work and making this were multiple ways to get!

### Reply 18:
There must be a very good reason why all of a sudden they decided to give people refunds.Don't ya wish you <rest of thread truncated>
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    ""hardware_name"": ""KnCMiner 400GH/s Jupiters"",
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10363,"Date: 2017-07
Topic: Reputable company to buy rigs
### Original post:
Any reputable companys to buy ready to go plug and play type rigs?I see several on ebay but the sellers tend to be newer or have no feedback for selling rigs yet.Thanks

### Reply 1:
Are you referring to GPU rigs??If so,wrong <truncated> better off building your own.......much cheaper......If you can't build it yourself,find a local PC repair shop & ask if they can help you,then if you have any problems later you have a local shop that can help fix it,since they built it Otherwise you will be hard pressed to get any help from an ebay seller,besides shipping the whole rig back & forth eating up cash........

","[
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]"
22192,"Date: 2018-01
Topic: But will I die? (electrical)
### Original post:
Will this setup work? Currently running 2 E9s off the sub panel on 20A breakers. I am unsure about:Main panel, is that enough amps or should I have a new main panel installed? Main to sub breaker, 50A enough?Wire gauge main to sub?Sub panel, 2 30A breakers enough?Wire gauge sub panel to PDUs?<link>

### Reply 1:
If you ask ""Will I die?"", it means -----> go hire a professional qualified electrician.

### Reply 2:
Yep. If you're in the United States, and your structure is insured. You want to hire a qualified electrician and obtain the necessary permits to perform electrical work, period.

### Reply 3:
I am currently running 2 S9s on one 20amp 240 Breaker with Nema6 receptacles. The APW3 runs 1600 watts. 1600 watts240v = 6.6 amps. You can run 2 S9s no problem. 3 S9s will be too much and keep your headroom.

### Reply 4:
I would not attempt a panel upgrade but replacing a breaker is not something Id call an electrician for. It is already set up minus the PDUs, unused 220 into basement. Im trying to figure out if it will be pushing it to run 6 S9s. If Im gona need a panel upgrade I wont bother getting PDUs.

### Reply 5:
10/2 wire to PDUs

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    ""hardware_name"": ""APW3"",
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21455,"Date: 2017-06
Topic: How to calculate worker hashrate at stratum
### Original post:
I use node-stratum-pool and it works well but I cannot calculate hashrate of the worker.on worker's share this stratum gives me 2 diffs: stratum worker difficulty and actual difficulty of the share, what of them I should save to database to hashrate calculations?

### Reply 1:
None of the two you have listed, those are difficulty values and are unrelated to the hashrate.Your hashrate should be visible from the pool's side, you'll get the most accurate value from them.Otherwise, it depends on your miner.

### Reply 2:
actually MPOS (pool engine) calculates hashrate using stratum worker difficulty, MPOS shows hashrate for last 5 minutes without normalization, so at pool dashboard hashrate always jumps up and down. I try the same way but I do hashrate normalization (I calculate average at 60 minutes) and hashrate is 15% lower than my miner program shows, is ok to lose 15% of hashrate on mining?

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11888,"Date: 2012-05
Topic: Ubuntu 11.04 headless mining (libqtgui4) question
### Original post:
Leeties of the BitCoin community,I'm trying to set up my first mining rig using <link> as a guide.After getting past the first line of commands, I'm stuck atCode:sudo apt-get install libqtgui4which upon input, <truncated> package lists... DoneBuilding dependency tree Reading state information... DoneE: Unable to locate package libqtgui4My question for you kind gentlemen is this: which version of qt do i install? (<link> Or, if you think there's an easier way for me to start mining, please enlighten me!Many Thanks!

### Reply 1:
Have you done a sudo apt-get update as that package should be there for you to <truncated> policy libqtgui4libqtgui4: Installed: 4:4.7.2-0ubuntu6.3 Candidate: 4:4.7.2-0ubuntu6.3 Version table:*** 4:4.7.2-0ubuntu6.3 0 500 <link> natty-updates/main amd64 Packages 500 <link> natty-security/main amd64 Packages 100 <truncated> 4:4.7.2-0ubuntu6 0 500 <link> natty/main amd64 PackagesAnd that guide contains outdated link so you will want to do.Code:sudo apt-get install bzrbzr checkout <link> cd <truncated> be able to install the json-rpc.

### Reply 2:
Thank you, the updates did the trick. If you or anyone else reading this has a moment, can you check the guide im using (link above, also pasted below) to see if there's any other commands that need to be updated? I plan to repost the updated guide after i run through it to make the setup process easier for n00bz0rz. Thanks in <truncated> a fresh Ubuntu Natty 11.04 64-bit Desktop with the latest updates and log into system with a user that has sudo permissions. sudo apt-get remove nvidia-common sudo apt-get install libqtgui4Load python and other development tools cd ~ sudo apt-get install python-setuptools python-numpy subversion g++ <truncated> and install ATI Driver 11.5 for Linux 64bit. cd ~ wget <link> sudo sh <truncated> --buildpkg Ubuntu/natty sudo dpkg -i *.deb sudo apt-get -f install sudo aticonfig -f --initial --adapter=all sudo rebootVerify that the ATI Driver is setup and running cd ~ DISPLAY=:0 sudo fglrxinfoDownload and install bitcoin cd ~ wget <link> tar xzvf <truncated> chmod +x <truncated> mkdir -p ~/.bitcoin echo ""rpcuser=user"" >> <truncated> echo <truncated> >> <truncated> python-jsonrpc cd ~ svn checkout <link> cd python-jsonrpc/ sudo python setup.py installDown<rest of post truncated>

### Reply 3:
Other than this change everything should should still just work or did last time I did it couple of weeks ago when I had hard drive failure and installed it again.Edit: You may want to update the version of bitcoin installed as that 0.3.21 is rather old.

### Reply 4:
... mining rigWell I guess your not trying to use cgminer then, but some other miner that requires qtCoz, the install guide in my sig (which is way shorter) will get you mining with cgminer (I suggest yo use the HDD install version)... and yes as DILLIGAF mentioned, you need to ""sudo apt-get update"" if the expected packages are missing.

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22640,"Date: 2018-06
Topic: Surge protection
### Original post:
I am curious as to what everybody uses out there for surge protection on their minors. I used some monster green power surge protectors when I was doing GPU mining. Unfortunately a couple of those burnt out and I had to use some old ones instead. I have been using those same old surge protectors and monster ones that did not fry on my ASIC minors. I just ordered some S7's and figured I would get some new surge protectors for those and my S5's.I just ordered some Tripp Lite surge protectors and I hope they do the trick. Has anyone use these before?<link> I would love to hear what other people are using out there with good results.

### Reply 1:
Good PSUs have built-in filters. Real protection is only in double convertion UPSes.

### Reply 2:
I do have to admit I feel a bit stupid not knowing that PSU could have a built in filter. All my miners run off EVGA gold PSU's, mostly 1,300 and 1,000 watt units. I just looked them up on the EVGA site and all my PSU's have:""Heavy-duty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), OPP (Over Power Protection), and SCP (Short Circuit Protection)""So I guess having everything plugged into a surge protector is not really doing much. After doing some research on the double conversion UPS units you mentioned, it seems the only ones big enough to handle the type of wattage i am using will cost $2,000-$1,500. Unfortunately i cannot afford to buy one of those for each circuit i am running my miners on Hell I would need one for each of the S7's i just bought, that's basically doubling the price of each miner, lol. I do have a couple Monster MP HTS3600 MKII. I used those on my home theater gear, would they be of any benefit to mining? I really don't see how they would be any different for mining than a regular surge protector.

### Reply 3:
When i got into bitcoin mining with the S1 i was using ethernet over power adapters which said surge protectors screwed up the signals. I moved my router and ran ethernet cables round the house 6 months ago with my S3's and didn't think about surge protection again. Think I will do some homework on individual socket surge protection.

### Reply 4:
westom posts all over the internet on many forums about surge protection.a whole house protector and proper ground of the mains usually works.I have had lightenting hit my home and everything survived due to my whole house protector and my 3x grounded main box.

### Reply 5:
Those standard protection circuits are for other anomalies. All PSUs have filters and surge protection for AC mains. An incoming surge on that Monster protector was also outgoing into the attached computer. Protection inside the PSU was so robust as to make that tiny surge irrelevant. But that same tiny surge also destroyed even tinier protection inside the Monster.Protection is always about where hundreds of thousands of joules harmlessly dissipate. How many joules did the Monster claim to absorb? Hundreds? Thousand? IOW near zero <truncated> means no surge is anywhere inside a building. If anything needs protection, then everything needs protection. Facilities that cannot have damage properly earth a 'whole house' protector. A solution proven by over 100 years of science and experience. And little unknown to a majority only educated by advertising, hearsay, and <truncated> cables already have robust protection - typically rated at 2000 volts. What can overwhelm that protection? Destructive surges typically occur maybe once every seven years. And must be connected low impedance (ie 'less than 10 feet') to earth BEFORE entering the building. Otherwise that current will go hunting f<rest of post truncated>

### Reply 6:
ditto. square d whole house suppressor.have the electric co check the ground.

### Reply 7:
Lightning can be 20,000 amps. So a minimally sufficient protector is 50,000 amps. Some Square D protectors may be smaller meaning two might be necessary.Electric company only inspects grounds for human safety. Grounding for transistor safety means meeting and exceeding what safety codes call for. For example, a solid bare copper wire connects breaker box to earth. If that wire goes up over the foundation and down to earth, then it is too long, has sharp bends, and is not separated from other non-grounding wires. A low impedance connection means that wire must be shorter and not have any sharp bends - to made an earth ground connection sufficient.BTW, above is only the 'secondary' protection layer. Each layer is only defined by what actually does protection - an earth ground - not a protector. Homeowners are encouraged to also inspect their 'primary' protection layer. A picture demonstrates what to inspect: <link>

### Reply 8:
None of which provide any protection vs. INPUT power surges, those are all on the OUTPUT of the power supply protecting it from abnormal OUTPUT conditions and offering some prot<rest of thread truncated>
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8826,"Date: 2015-01
Topic: Hasha Moonraker Warp 3 6Th/s - Legit????
### Original post:
I haven't kept up with Hashra for quite some time but one of my friends asked me about them tonight before making the wire transfer for the Moonraker Warp 3 (3X Moonraker units) at 6Th/s for $895 USD.. They report 900W per 2Th so for the price point it's a solid deal but I don't have any up to date insight into the company..Can anyone comment on positive/negative experiences?

### Reply 1:
To my knowledge they still have not shipped. They kept pushing back date.Any company that only has renderings I personally would not order from.

### Reply 2:
from what Ive seen and been told they are suppose to ship next month first week but i did not know they were SHA256 miner, i had one on per order but then the S5 came out and i couldn't wait any longer so, i got a refund .or do they have a sha256 version of new ones coming out , form what i read if they do come out if ever they will run at 110 MH and are Script miner . were suppose to run at 100 MH and were due out in OCT 2014 then put off till Dec 2014 then by the middle of this Month now with a new ship date of the first to second week in Feb 2015 at 110 HM, I plan to mine both coins just not gonna get my hopes up for this one any more. You are right i have been watching them this is new on there site . <link> just popped up recently on there site about the sha256 version . I may just hold off getting another S5 and wait to see if it happens , i won't per order any more form them .I will wait to see at 900 watts at the wall for 2 TH not bad imo . not low enough for me, but not bad about the same as two S5 in one package for 350 less . cya

### Reply 3:
until now they havent ship any of their bitcoin miners

### Reply 4:
there's a topic on that

### Reply 5:
Thanks for the details, good to hear validation of my thoughts..

### Reply 6:
I would stay away... for now. I currently have an astro on order(I know presale=death but whatever, I gambled a bit here). Now this has been pushed back ALOT. First I think it was October shipping or something like that, then December and now February. But wouldn't you know it, lifeforcepools, a reseller, has been trying to be very diligent in keeping people updated.... recently.(Was very quiet for a LONG time). I actually got an email from him with pictures, that weren't rendering, of a board and a case, don't know if they are legit, maybe. so either someone is just stringing us along or they are actually in production. Now this is only for the scrypt boards, don't know about the sha256 boards, but I haven't seen any proof of production for the sha256 boards, but I also haven't been looking. My suggestion would be to hold off until you hear of a confirmed delivery. Just my thoughts though. As always do as you wish.

### Reply 7:
Lucky you, for the only saving grace is that you didn't pre-order, but actually ordered. <link>

### Reply 8:
The Guy at life pools is cool or was to me but i could not wait any longer once the S5 hit . my Zeus miners were eating up to much power for there own good .but i do want one of the sha256 and 110 MH miner .going to hold off buying one more S5 to see if the 2 th miner pops .The lite force guy told me on the 18 th of Jan they are gong to be delayed till the first week in Feb 2015 so I'll wait till the 3rd i have one coupon left on bit main sites id hate to waste unless this happen then that coupon won't matter to me . if i know for sure by the 3rd some thing has shipped, i will order one .

### Reply 9:
Any company with preorders that isn't spondoolies or bitmaintech I have a problem with. More importantly I wouldn't order from all the other companies until someone gets a unit to test, so that there is a physical unit that may or may not perform at certain specs.

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23290,"Date: 2020-06
Topic: Can KNC Neptunes still mine?
### Original post:
Hi,I have 12 KNC Miner Neptunes. I'm wondering a couple of things.1) Can they still mine even though KNC went bust and you can't access the page to tweak them etc.2) In my slushpool it shows the workers as being OFF. How can I get them working again?ThanksTony

### Reply 1:
Have you tried the manual?<link>

### Reply 2:
Okay lets see 660gh x 12 = 7920 gh or 7.920th. at about 20000 wattsand a tweaked s9 using brains software will do 8th at about 670 wattsso op WTF are you thinking?you want to spend 20,000 watts an hour vs 670 watts an hour.For what possible reason?Free power is fine but if you have free power buy some s9's and run them instead.If you have 20,000 watts an hour to burn.Buy 2 s9's and run them at 14th each at 1300 watts = 28000th for 2600 watts.I have s9's for you if you are USA based.

### Reply 3:
In addition to biffa's reading the manual comment. These things are so slow that many pools might not show them working because of minimum difficulty they might never find a share at 660GH. I don't know what difficulty slush starts at and how low they go to.-Dave

### Reply 4:
Sure, they will work. And since the admin page is on the <truncated> you can set the speeds. But really, what is the point: By modern standards they are quite slow. Maybe solo mine with them and see if you can hit a block.

### Reply 5:
Because as Phil said above, the power draw is insane by today's standards.You can sell them for $5 to $10 each cube to people who want to play and get something faster that pulls 1/20th the power.And that's 12 points of failure, a bunch of power supplies, etc. At some point it's just not worth it.-Dave

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8843,"Date: 2015-02
Topic: Need help with Antminer WAN settings..(donation within)
### Original post:
OMFG dude! WTF ARE YOU DOING? Take this message down NOW!!! that is an externally routed ip address. I was questioning it at first until I just logged in to your miner! You need to hook it up to an internal router and firewall outside access. Go to a router first please!!! I didn't change all your pools - but I promise someone will...PLEASE FIX ASAP!!!Boomin

### Reply 1:
What kind of router do you have? You should simply log into it and change the address back to 192.168.1.x as it was before. You had setup static ip addresses on your ants?

### Reply 2:
Err.. Yeah, he's right. I was also able to connect to your miner before you took it down. Please give a detailed description of your network, you're definitely doing something wrong lol.

### Reply 3:
DNS problem?

### Reply 4:
me too!maybe some1 just fuck up his miner

### Reply 5:
Wow, I guess I screwed up terribly. Now I can't even connect. Can someone please help? I will make it worth your time.

### Reply 6:
Check your private messages.

### Reply 7:
Please post the screen shot of your antminer network setting page

### Reply 8:
Please explain here how did you connect to internet? Like Cable modem -> router or usb modem -> routerOr pick one member here & send them your teamviewer id & password

### Reply 9:
throw me a message if you need some help, i'll be happy to log onto teamviewer and try and fix it.

### Reply 10:
Issue resolved. Thanks for the offer mazedk and Zich, I do appreciate your time reading my posts. However, the user Prelude HAS GONE OUT OF HIS WAY AND SPENT MULTIPLE HOURS ON TEAM VIEWER TONIGHT HELPING ME OUT. He was able to change my IP back to it's original state before my ISP changed it on me, which in turn let my network recognize all of the devices, including the antminer, once again. Again, HUGE THANKS to PRELUDE, model member to this community and the internet in general. This post was in frustration - my miner has been working uninterrupted for over a year, and then my ISP changed my address on me. After a few days of tinkering, I just decided to post. I didn't actually consider that this was the internet, I guess. Either way - Thanks for not messing my stuff up too bad, I suppose.Just for reference - My antminer is connected via ethernet to a linksys hub switch in my room. The hub switch is then connected to the modem with a cable, which is then connected to the wireless router which I do not use. I wasn't able to access my modem, so we bypassed it and connected my cable straight to the router. This gave us the access we needed to be able to change my IP back. The issue <rest of post truncated>

### Reply 11:
Hello, my name is Dave and I venture on here whenever I encounter a problem I can't solve. Heres the issue. I recently (two days ago) got new internet. I didn't switch ISP, rather upgraded from 50mb to their brand new 125mb package. Well, With this new internet came a new IP address for my entire home network. I am unable to change the ip back to it's previous state. My former ip was 192.168.xx.xx. My new one is 50.4.xx.xx. I was able to change the ip address on my antminer from it's default 192.168.xx.xx to an address on the new network, 50.4.xx.xxx. I am now able to log into my antminer again from the web browser. The issue is, it isn't mining. I changed the WAN settings to what I THOUGH was correct, but it isn't working. If someone could walk me through exactly what to change my WAN settings to, I would consider it a favor of time and throw a small donation your way. Time is money and I've been struggling with this for two days now. I'm guessing that I just haven't entered the new ipv4 address, subnet mask (which is different now as well), and gateway correctly, but I am out of ideas and frustrated. Thanks for your time.

### Reply 12:
No problem, happy mining

### Reply 13:
Thanks for the kind words. Was happy to help!Yeah, the issue was:Modem ---> Switch ---> Ant instead ofModem ---> Router ---> Switch ---> Ant

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20346,"Date: 2015-04
Topic: Antminer S1
### Original post:
I just have a quick question , hopefully someone can give me some advice .I have and Antminer S1 and a gawminer Bitfury , , now here is the catch , my internet has a data cap of 300gb a month , How much of that 300gb would my 2 little miners use ?

### Reply 1:
I cannot say exact amount. But miners are normally pretty small on data usage. Which miner do you mean with gawminer bitfury?

### Reply 2:
S1 use very little data. Comes down to the data it uses and what pool and also difficulty you have the miner set to mine on. Might want to just get a monitor tool for the url its using and port etc and monitor the data used on it. Maybe looking at 1Gig or less next to nothing so with your data limits per month you should be fine.

### Reply 3:
If you have a data cap then you have a way to monitor your data usage. Run your miners for a couple days and extrapolate to see what they'll use in a month.

### Reply 4:
Don't worry dude, with 300Gb quota you will be fine

### Reply 5:
I'd be surprised if you used more than 500MB per month with both rigs.

### Reply 6:
I have the bitfury , its like 1.2-1.4 mgh .And thanks for all the replies on the help . I had forgot I posted this to see if anyone had any ideal on what they would use . Our cap is flying though the roof for some reason and i had to stop my mining for the moment . We cant figure out why or what it is . My son and me didnt thik it would be the miners since I use minerspool , supernova , coinminers and manhattenminer as my pools . i just didnt believe it was using that much to begin with .

### Reply 7:
I'll bet you're leaving your bitcoin wallet open. If so, that's where your bandwidth is going. The wallet can easily take a few GB per day, while mining is measured in KB or MB. Turn your wallet off, and your miners back on.

### Reply 8:
So your saying the miners shouldn't use but very little and the wallets alot . If that is the case then i know where part of it is going .

### Reply 9:
The miner should be very small. Depending on wallet yes that could be it. Look in router and see if it shows bandwidth per item on it.If core wallet, yes i would close that on a restricted bandwidth internet plan.

### Reply 10:
they use nothing basically, i tried with two g-blade asic and they were using about 60kbps at peak and only when finding shares, so not alwaysi think it will be the same for the s1 or every other device

### Reply 11:
I want to thank everyone for their input . All the searching I did , I could really find nothing . After the wallet was mentioned , it kind of made sense to me since its downloading the block chain nonstop , especially when staking . Result , wallet got shut , I now have internet with a 300gb cap , and an internet with no cap at 1 mb download , but that one is on a trial of if I like , I keep it . So in short thank to everyone for their input on this problem .

### Reply 12:
Yes, if you run wallet core, then it's will used many data since it's always updating. I am using mycelium wallet on android phone, it's didn't used many data

### Reply 13:
Hiya, not sure if this is the place to ask but i'm having a problem with connecting to the antminer web page, i can ping the ip address but can't access the interface.help plz lol

### Reply 14:
You probably need to adjust your computer's IP to be on the same range as the miner. Check out page 3 of this for how.

### Reply 15:
I am sorry you first. but i really don't know what called Antminer S1 ? What does S1 mean ? Sincere thanks !

### Reply 16:
It's the first generation of miners put out by Bitmain. Power usage makes them operate at a loss now, but still a cool way to try out mining.<link>

### Reply 17:
Yikes

### Reply 18:
Try finding the restart button somewhere on the motherboard of miner, be careful but now i'm not sure if it was problem with s1 s2 or s3 but if you find that button then it should help you solve the problem.

### Reply 19:
Are you sure the ip belong to S1. If yes, then try to clear your browser cache.

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11676,"Date: 2011-11
Topic: Anyone, please, I'm going F'in crazy here!!!!!!!!
### Original post:
I just can't understand why it doesn't work. That ./configure says file not founf or some bs. This is driving me insane and no one has any decent tutorials, it all assumes you're a linux genius.damnit man, I'm sure someone here could help me easily. Please help!

### Reply 1:
Before you can run configure you need to run ./autogen.sh

",[]
18560,"Date: 2014-01
Topic: Rig Shutting Down (Power Surge)
### Original post:
So I have two sapphire HD 7950s and an asus f2a55 mobo, with a bronze corsairCX750 watt power supply.The problem is that the pc shuts down when i leave it on at night, and the MOBO says it detected a POWER SURGE and it shutdown to prevent damage.Im waiting till i can change the psu, cause I think thats the problem, but ill keep mining unitil i can do that.My question is if its bad for my rig if it keeps shutting down like that..

### Reply 1:
I don't think there is going to be any problem.

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16416,"Date: 2023-01
Topic: Perdida de Th/s en el Pool
### Original post:
-SnipGood afternoon my dear fellow miners, I have a question about a problem that frequently occurs to me, and that is that the Real Time power of the Pool (Btc in my case) tends to go down and checking my equipment I do not have restarts of any and the internet It's stable. Could someone help me find out why this is happening? Thank you for your attention.

### Reply 1:
HeyWhat is exactly your problem ?Your ASIC goes offline randomly ?Can you paste here the logs (or use pastebin nevermind)

### Reply 2:
And how much up and down 1%? 10%? 50%?There is going to be a fair amount of variation because there is an amount of luck involved. So long as over a long period (couple of days) the average is about where it should be you are fine. If you are checking minute to minute there can be some big swings.Most (All?) pools give you that number.Also, what miner are you using? -Dave

### Reply 3:
I think what you talking about is the hash rate report on the pool compared to the miner's current hash rate.If I'm right I think it's due to high ping it can cause delay. Try to change the pool with low ping. Some pools have 3 options ASIA, EU, and US pool servers if you are living in Asia you should use Asia pool or if you are living in the US then use US pool.If using other pool doesn't fix your issue try to change your miners network from DHCP to Static and use Google/Cloudflare DNS. Update here if it works

### Reply 4:
Good evening, I use the pool at <link> And sometimes my ""Power"" or ""BTC Hash Rate"" suffers sudden drops, by this I mean that I have a BTC Hash Rate of 10,000 PH/s For example, and it lowers me to 9,000 PH/s. This without having to restart my mining equipment

### Reply 5:
1) Does it go back up again?2) What speed are miners showing on the GUI when this happens?3) Are you running the stock firmware?In general 10% is at the edge, but still within normal ranges of variation.Much more then that and I would start checking network speeds and connections.Also, what time period is it showing those numbers for? If it's a 1 or 5 or 15 minute average then it's not important the 24 hours number is what you are looking for.-Dave

### Reply 6:
Yes, the BTC hash rate goes up again after these lows but it happens in varied periods of time 3min, 5min.. And well, this is why my 24H is also affected.As for the ""GUI"" I don't know exactly what I should see, I'm not very informed of everything that I should take into account when reviewing the equipment.If they run if Original Firmware.

### Reply 7:
Have you tried to monitor your all units sometimes hash rate drop due to overheating Bitmain units automatically increase or reduce the frequency and fan of the hashboard depending on their temp? Better use a monitoring tool to find out what exactly happens to your miners, Bitmain has free monitoring tools that you can check here ""MAnagement tools""Sometimes the pool is down If I were you try switching to another Sha256 pool so that you can check if it's due to the pool server. You can try ViaBTC pool or try any other pools from this link <link>

### Reply 8:
The machines are monitored 24 hours a day, 7 days a week, the area where they operate is prepared to be at temperatures of 22 C (71.6 F) with the help of Two Evaporative cooling pad systems and 4 Air Conditioners.The equipment can have a continuous fiancement without any shutdown or reboot of these and the BTC Hash Rate can still drop.

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14190,"Date: 2011-06
Topic: Which mining pool is the best right now?
### Original post:
I just started mining today (and no, I'm not buying any ridiculous GPUs until I know there's actually some hope of producing revenue with them. The reason I started doing this is that I'm short on money. ) and I followed all the instructions to set up GPU/CPU miners. I am currently connected to slush's pool, as my best GPU, an Nvidia Geforce 8500 GT, can only produce 2.5 mhash per second, and from what I can gather from this forum that is a ridiculously awful performance. I am currently mining with that GPU and a second, horribly slow CPU on a different computer.My question is: is there a mining pool that gives the individuals more Bitcoins than slush? Because, the last I checked, the Bitcoin -> USD rate is somewhat shy of several hundred dollars per Bitcoin, which is around what it would have to be to make this whole foray profitable, with the amounts that slush is giving me. It seems like a bad time to jump on the bandwagon right now - from what I can tell from one day of research the difficulty is <truncated>

### Reply 1:
All of the pools will give you around the same expected return (minus any fees, which are usually small, especially for someone CPU mining).

### Reply 2:
Stick with Slush, its a good pool.

### Reply 3:
So wait, maybe I'm not getting this quite right. Is the amount of Bitcoins you receive from the block directly proportional to your speed?

### Reply 4:
With some variance... yes.

### Reply 5:
Oh well. I suppose that even with Bitcoin, it takes money to make money. I just wish that there was a way to boost my speed. I tried all these extra flags on my GPU miner and all they did was slow the hash speed down, so I guess I'll just keep mining for fun until it becomes unprofitable (and it looks like that will happen quite soon).

### Reply 6:
Yeah, like sirky said, that's pretty much it. So let's say for example you are in a pool that is pushing 50 GH/sec total and you are putting in 1 GH/sec towards that. When you're pool finds a block of 50 coins you'd get a percentage of what you put in, which in this case is 1/50th and you'd get 1 of the coins.You'll see a huge variance of pools and none of them are really better. Deepbit is at 2200 GH/sec right now, so if you were mining for them with your 1 GH/sec, you'd get 1/2200th of a coin or .02 coins every time the pool found a block, but with 2200 GH/sec, deepbit is going to find blocks a lot more often than smaller pools.So in the end, it works out pretty much evenly no matter what pool you pick. You either get larger rewards less frequently, or smaller rewards more frequently. Just look at what the pools offer and make your choice based on their fees, offerings, etc, and don't get too worried over the rewards.

### Reply 7:
You may want to double check the btc to dollar rates and your electric rates, unless you don't pay for electric ;o)

### Reply 8:
Okay, you got me. I was exaggerating and didn't really check my facts, but the computer is making a good bit of noise and using up more electricity than usual, and as of now I have about .0005 Bitcoins, which makes out to about a bit less than a cent.

### Reply 9:
I don't know if you can actually qualify which are ""better"", but here are a few smaller pools that you might get larger payouts from:<link>

### Reply 10:
Larger, but less frequent.Then again, at 3 MHash... there isn't really a pool out there that you will get a good payout from.

### Reply 11:
Heh, earlier today I checked out the Bitcoin Calculator... it asked me for my mhash and I put in my khash. Man, was I excited...

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9417,"Date: 2015-10
Topic: s5 Fan Modification
### Original post:
Hello Team!I would like some guidance on fan modifications. I have recently purchased a S5 and I would like to learn how to replace the default fan and add a secondary fan for push/pull. Is this easy and just unplugging the fan and replacing it? Does the Antminer have a power input for the default fan and a secondary fan? What other tips do you have to make the unit run quiet?Edit: Does the unit also shutdown if it gets too hot?Thank you!

### Reply 1:
there are lots of threads on this, for example:<link> experience: noctua 3000 works in push together with ultrakaze in pull (put ultrakaze on constant fan using molex directly from PSU)<link> expense ~$40, miner is much quieter, but temp of the boards will rise to ~58C (with 28C ambient), which is still OK-I run them like this for months.

### Reply 2:
You'll also need some long screws, I forget the dimensions but it'll be in one of the 3 or 4 S5 threads if you search for ""screws"".

### Reply 3:
yeah, long metric screws, good point...check in lowe's metric screws section if you are in US.OFF memory PM4-0.7X45mm

### Reply 4:
Thanks for this information! Would one fan connect directly to the Antminer and the other would be constant using a molex connector?Does the S5 auto shutdown if the unit gets too hot?

### Reply 5:
You could make a power stage for that second fan and use the same pwm and speed signals than the default fan. That way it is still tmp-controlled. Power-stage looks very similar than original S1-S3 design and it's pretty easy done on an external PCB.

### Reply 6:
It is supposed to autoshut down at 80c, but you should keep the miner at 60c or lower anyways. If you want another failsafe that is not software based use something like this;<link> complete thread on the topic;<link>

### Reply 7:
I somehow dispense with the additional screws. I use 4 screws coming with stock fan, 2 angularly for push fan and 2 for pull fan.

### Reply 8:
i swapped mine out for quieter operation to 3000rpm noctua fans, ive always used lower rpm noctuas in my pc builds with excellent results, anyway turns out bad idea, operating temps significantly higher than the stockers so I've changed them back. I've considered running the noctuas as pull, but the stock fans blast a fair bit of air through and i'm not sure if itll overspeed the noctuas

### Reply 9:
i don't understand why ppl don't try to duct 2 or more quiet fans thru a miner

### Reply 10:
What do you mean ?

### Reply 11:
temp up to 59C are fine-it makes no difference-i run Noctua push/ultrakaze pull(at molex=full speed), miner was at 58-59C with 28C ambient (higher than most folks)

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23325,"Date: 2020-09
Topic: t17+ with framework asic.to
### Original post:
I updated my asic t17+ 55 ths to framework of asic.to successfully .My miner status and log is on below....you know that we can change voltage and frequency of chain manually in asic.to framework. i want to know with change of voltage or frequency of chains , can i solve this chip issue? any recommend setting is exists for asic.to? thanks.my asic is this <truncated> 12:32:43] WARN: chain[2] - 0 of 44 chips detected[2020/08/16 12:32:44] INFO: chain[1] - 44 chips detected[2020/08/16 12:32:45] INFO: chain[0] - 44 chips detectedand after reset it manually it change to it:Code:[2020/08/17 17:53:09] WARN: chain[1] - 0 of 44 chips detected[2020/08/17 17:53:10] INFO: chain[0] - 44 chips detected[2020/08/17 17:53:18] WARN: chain[2] - 24 of 44 chips <truncated> Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpag<rest of post truncated>

### Reply 1:
What do you mean by resetting it manually?At which point do you get this <truncated> 17:53:09] WARN: chain[1] - 0 of 44 chips detected[2020/08/17 17:53:10] INFO: chain[0] - 44 chips detected[2020/08/17 17:53:18] WARN: chain[2] - 24 of 44 chips detectedAnyway, to answer your question, you need to goMiner Configuration > Chain Frequency settingsNotice that there are two ""Chain Frequency settings"" tabs, you want the second to the left, scroll down and set the voltage and frequency you want.Before you do that I suggest you go toMiner Configuration > Profile SettingGo to Preset and chose a low-profile, let it run for about an hour and then see if that fix anything if not then simply disable the profile and go to Chain Frequency settings and set low-frequency on your chain 1 and 2 ( 0 seems to be fine showing 44 asics as it should).Please note that your chances are slim to nothing, but it still worth the try.

### Reply 2:
Dear Mikeywith my t17+ have this log now..and after 15 min power off automatically and again miner work for 15 min ...i don't know whats the problem...please guide me <truncated> 00:05:10] INFO: Detected 256 Mb of RAM[1970/01/01 00:05:10] INFO: Switching to manual fan control (30 %)[1970/01/01 00:05:10] INFO: Checking fans[1970/01/01 00:05:15] INFO: fan[0] - OK[1970/01/01 00:05:15] INFO: fan[1] - OK[1970/01/01 00:05:15] INFO: fan[2] - OK[1970/01/01 00:05:15] INFO: fan[3] - OK[1970/01/01 00:05:21] INFO: Power ON[1970/01/01 00:05:23] INFO: Starting FPGA queue[1970/01/01 00:05:23] INFO: Initializing hash boards[1970/01/01 00:05:23] INFO: chain[2] - <truncated> 00:05:23] INFO: chain[1] - <truncated> 00:05:23] INFO: chain[0] - <truncated> 00:05:36] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[1970/01/01 00:05:37] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[1970/01/01 00:05:38] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[1970/01/01 00:05:38] WARN: chain[2] - 0 of 44 chips detected[1970/01/01 00:05:39] INFO: chain[1] - 44 chips detected[1970/01/01 00:05:40] INFO: chain[0] - 44 chips detected[1970/01/01 00:05:48] ERR<rest of post truncated>

### Reply 3:
I did it but error is stable yetCode:[2020/08/21 19:08:07] INFO: Detected 256 Mb of RAM[2020/08/21 19:08:07] INFO: Switching to manual fan control (30 %)[2020/08/21 19:08:07] INFO: Checking fans[2020/08/21 19:08:08] INFO: fan[0] - OK[2020/08/21 19:08:08] INFO: fan[1] - OK[2020/08/21 19:08:08] INFO: fan[2] - OK[2020/08/21 19:08:08] INFO: fan[3] - OK[2020/08/21 19:08:14] INFO: Power ON[2020/08/21 19:08:17] INFO: Starting FPGA queue[2020/08/21 19:08:17] INFO: Initializing hash boards[2020/08/21 19:08:17] INFO: chain[2] - <truncated> 19:08:17] INFO: chain[1] - <truncated> 19:08:17] INFO: chain[0] - <truncated> 19:08:30] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[2020/08/21 19:08:31] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[2020/08/21 19:08:32] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[2020/08/21 19:08:32] WARN: chain[2] - 0 of 44 chips detected[2020/08/21 19:08:33] INFO: chain[1] - 44 chips detected[2020/08/21 19:08:34] INFO: chain[0] - 44 chips detected[2020/08/21 19:08:41] ERROR: src/chip139x.c:1049 chain[2] - Failed to receive chip replies[2020/08/21 19:08:42] ERROR: src/chip139x.c:1049 chain[2] - Faile<rest of post truncated>

### Reply 4:
According to your logs ""Failed to receive chip replies"" your hashboard might be overheating that could lead to miner autoshutdown for overheating protection.The solution is already on the above post by mikeywith reducing the frequency might solve the issue. If not, try to increase th<rest of thread truncated>
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8574,"Date: 2014-11
Topic: are the Black Arrow Prospero X-3 any good??
### Original post:
hi,Im might be buying a Black Arrow Prospero X-3 (2x 1th/s units)cant find any info and reviews on them- are they good (okay) quality?-what is the power consumption?- i have heard they have psu problems dose that count for all of them?-whats ur opinion on the Black Arrow Prospero X-3thanks,JT

### Reply 1:
I can't say in regards to the first question as I paid over $5k for mine almost a year ago and have received nothing. Other users have made posts claiming they've recently received their X3s but that they're exploding and bursting into flames. I've heard they're 1W per GH at the wall before they go up in flames.BA recently blamed the PSU manufacturer for all their woes but after the most recent set of X3 units to go up in smoke it's now the shipping companies fault and there was no fire just smoke from a shorted transistor and light from a blinking LED.My opinion on the X3 is the most biased you can find as I've been scammed out of thousands of dollars and have not received one.

### Reply 2:
To sum it up, I think that would be a no. With all the people who been burned literally and figuratively its best to stay away from these.

### Reply 3:
Just don't. Almost everything about BA is really bad. 2 month technical supprt replies, bad customer support, bad (proper shitty) management.

### Reply 4:
As others have said...""STAY AWAY FROM BLACKARROW"" Also:So,only buy IN STOCK miners......better yet buy BTC & save the electricity & headache

### Reply 5:
Look elsewhere. They're a fire hazard, have randomly exploding caps, a proprietary PSU that is known to fail. They're also very large for the amount of hashing power you get, two 4u rackmount cases for 2TH.There are many better options out there.

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14349,"Date: 2011-06
Topic: Why oh why does blocks/hr rate rise at the end if a difficulty period?
### Original post:
Last value pulled from Bitcoin <truncated> / 279 <truncated> in 93 blks56% increase in approximately 7 hours.EVERYTIME the rate rises dramatically just before the difficulty rise; perhaps increasing quite noticeably about two days prior to the actual rise. I am sure there are a lot of individual miners out there are are trying to add a little to earn a little more, but I think the major increase is due to major investment by a few individuals; probably many who got in early and have a hoard of coins and even at today's $13-$17 rate per BTC that far exceeds the cost per coin of their original mining. Why does this bother me? Well the obvious reason is my return goes down per unit of effort. That is not the real reason however, as I didn't expect to be able to mine forever anyway. The real reason it bothers me is that there are, presumably three types of miners out there:Miners who used existing hardware, maybe with some modifications and started mining. Maybe put enough parts together to get a few GPUs mining on one or more machines. [This would be me .. no intentions of building out more hardware when mining ceases to be profitable (and when coins that are cheap now don't show sign<rest of post truncated>

### Reply 1:
That's what I said. However, it isn't as if everybody keeps their gear offline until right before the difficulty change. There is always a block rate spike in the 48-72 hours leading up to that time. It's an odd trend if you ask me. If it were just natural acquisition of hardware by new or growing miners, then it should be somewhat linear [clearly a drop after each difficulty increase], but it is more linear after the difficulty increase and then it takes a more exponential spike at the end of the difficulty period. That doesn't seem like natural growth of interest or variability due to latency between hardware orders and getting the rig setup and online. Maybe it is just coincidence over the last several difficulty periods? Eh?Oh yeah, it is already up to 13.52 / 266 s. Pretty steep increase for an hour forty minutes or so.

### Reply 2:
I don't know what would you accept as a reasonable answer. You can be lucky I didn't discover bitcoin mining at the start of this year, because I would buy $75k worth of mining gear out of the gate and add approximately $10k hardware every month until today. As of today I would stop adding more hardware and would continue mining as long as I would still be up, even 1 cent over my electricity cost. I'm sure there are some bigger farms out there that maybe no one knows about, but the thing is mine would be a significant % of the overall market for a long time. When difficulty would be high to meet my electricity cost I would sell 50% of my hardware at very reasonable price of lets say 40-50% of retail value. I would still mine with the rest and be willing to take a small loss on monthly basis. If difficulty would still go higher and there would be no sign of miners slowing down I would sell the rest of the hardware.Up to that point I wouldn't sell a single coin. I would then calculate what I spent so far on my <truncated> costs-my hardware sale, and the amount of coins I would generate up to that point. Then I would wait for the right time to market enough of the coins to recoup all <rest of post truncated>

### Reply 3:
Hindsight is 20:20. Bitcoin has always been very risky - you don't know if it's going to be around next month (political risk, price risk). It's easy to say now that it was a good idea to mine 6 months ago, but no one knew that for a fact back then.

### Reply 4:
OK, I should have worded it differently. Risk/reward was lightyears better back then compare to probably any difficulty increase that followed. So sooner you discovered bitcoins, less risky it was to add hashing power.

### Reply 5:
All of this goes away when the LargeCoin group makes their ASIC. They will then control the system because one well-designed ASIC could do 10TH/S. If they have 1000 of these, so much for any GPUs

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16688,"Date: 2011-06
Topic: proof of work
### Original post:
are all proof of works on average worth <truncated> from <truncated> <truncated> valid shares110645(44 * (10^9) * 60 * 60 * 3) / 110 645 = 4.29481676 10^9

### Reply 1:
or is it like that:3 766 548 342 687 541 / (877 226 + (2 / 3)) = 4.29370023 10^9 ?

",[]
19551,"Date: 2014-07
Topic: 1 ths dragon miner keeps shutting down
### Original post:
hi,My 1TH dragon miner is behaving very badly. Can anyone help diagnose the problem?It seems to shut itself down after 20-30 minutes of mining and doesn't restart. The only way I can get it to restart is by unplugging it from the wall, removing the ethernet cable and letting it stay like that for about 30 minutes. Only then it will start up again and run for another 20-30 minutes before shutting down.Tried all sorts of pools to make sure it isn't a pool issue. Internet and power supply are stable as demonstrated by my other GPUs.Room temperature is 20 degrees celcius.Anyone else facing a similar issue?

### Reply 1:
Sounds like you happen to be unlucky and have one that needs number 5 done on <link> .It discharges electricity and then can restart, be careful with electricity.

### Reply 2:
dragon miner use a 1000w psubut In fact it is overlock and need 1150w psu so .....

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16748,"Date: 2011-07
Topic: Why do I get an out of range error when I use DVI but VGA is fine?
### Original post:
HD 5970 with dual DVI and 1 mini dvi port. If I use a cheap DVI to VGA converter then I can get all ranges shown. If I take off the adaptor and just go straight through DVI then I can't see anything other than an ""Out of range"" red box in the center of a black screen.I've tried multiple operating systems, drivers, nothing seems to work. Has anybody ever seen anything like this before? My monitor accepts both DVI and VGA, it's a 22 inch westing house L2610NW.

### Reply 1:
I can only think of a defective DVI cable where maybe one of the pins does not make good contact.Maybe try another cable?

### Reply 2:
Most monitors will auto-detect but just make sure its not set manually to analog instead of digital

### Reply 3:
Got it, my refresh rate has to be 60hz and windows keeps trying to make it 62. Hopefully someone has this issue and this thread helps them out.

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22483,"Date: 2018-03
Topic: Schedule a CRON job on Antminer s9
### Original post:
HelloI tried scheduling a cron job on an S9 using crontab -e. It threw an error saying <truncated> didn't exist so I created it. I noticed there was already a cron job scheduled in <truncated> do you properly set up a cron job on an S9?edit:ps -ef | grep crond does not show the cron daemon started.

### Reply 1:
I have the same question. I found some methods scheduling cronjobs through other hosts (e.g. a raspberry pi) but I would like to find out if it's possible to schedule running scripts natively.

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9526,"Date: 2015-12
Topic: Does any one know where to buy S7 controller ?
### Original post:
hello allDoes any one know where to buy S7 controller ?I recently bought 2 S7 one of them seems to have a defective controlboard . when i connect them only yhe fans work (very lightley) no light no network connectivity or anything.i tried to reach out to Bitmain they responded to my first email (5days ago) saying please provide us with order number, etc.... but i never heared back from them.So i thought about buying a control-board to save myself the hassle.I know that i can run 2 S7 with one contrller board but cables are short and i dont know where to buy them from.I would really appriciate your helpThank you

### Reply 1:
Long cables can be bought from me for EU, and Finksy for North America.They should at least help you not to lose everything while waiting for the replacement control board from Bitmain.Cables are $1 each plus shipping.

### Reply 2:
You should in the first instance pursue Bitmain, that is your best bet for a solution.If you want to do something useful in the meantime swap the controller boards between systems and confirm that the controller is defective?Next I think you will find that if you reposition the controller between the two S7 placed alongside each other that the cables will be long enough?Finally others will be along offering replacement boards & longer cables. Rich

### Reply 3:
Thank youi will try to reach out to Finksy at least to get some coin until i get this sorted out with Bitmain.

### Reply 4:
Thanks Rich,I thought about swapping the boards that but i dont wanna lose the warranty. IF for some reason they asked me to return it and they find out i played with it they might make it my fault.

### Reply 5:
That works too, nice setup

### Reply 6:
You do not require any new cable. Look at the picture.<link> is not my image. This is from S7 topic .

### Reply 7:
smart setup Thank you

### Reply 8:
I was wondering could you buy one s7 and split it into 3 separate miners using 2 additional controllers ?Cooling and powering a single hashboard would be pretty easy and you could spread them around the house(s) to minimise noise and heat but still have the efficiency of the S7.

### Reply 9:
I think this would be a neat idea, as would the middle ground of a 2 Board S7. I am fairly certain that an S5 Controller with the S7 firmware loaded can be used for the S7.Rich

### Reply 10:
If i could get the hardware id be happy to give it a shot, dont really mind opening up a new S7 and potentially breaking it .Getting the S7 isnt such an issue, but the big problem is getting additional controllers probably will be, i couldnt even get bitmain to send me an S3 controller...so ordering 2x S7 controllers...not likely.

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22581,"Date: 2018-05
Topic: S9 performance inconsistencies - firmware related?
### Original post:
I have two 13.5TH S9s from the November 2017 batch, lets call them worker1 and worker2.Worker1 is running firmware version S9_V2.51: it averages 13.63TH, temps around 80, will occasionally switch to a lower priority pool (when worker2 has no trouble reaching priority 0), and has its chips clocked to an average of 626.74.Worker2 is running firmware version S9V2.23: averages 13.92TH, temps around 75, and has its chips clocked to an average of 641.25.Worker2 is performing faster, cooler, and running an older firmware version than worker1. Should I flash worker1 with S9V2.23? Or just accept this as random hardware variance.

### Reply 1:
If you have 1117 firmware on your november batch and you think it is causing issues id roll it back. I have found numerous problems with the 1117 firmware and have removed it completely from my environment.

### Reply 2:
Since bitmain removed the april firmware from their site and the aws link is so slow, here are some alternates:<link> should confirm that the sha1sum is <truncated> before flashing

### Reply 3:
Yes & no.....i had success rolling back the firmware for a unit from Aug 17....butMy Jan 18 units absolutely do not benefit....in fact ...flashing the April 17 firmware causes the temps to jump 10c while freq and hashrate is exactly same as Nov 17 firmware..So I back to the Nov 17 firmware on all of my units from post sept 17 My best luck is with the July 17 firmware but can't find a copy of it anywhere.....Ditto for my 14Th units from Dec....they do just fine with the Nov firmware and worse (High temps/more amp draw/less hash if rolled back).

### Reply 4:
You got lucky. Ive had to roll back well over 1000 s9s away from that terrible November firmware.

### Reply 5:
Ok I'll try downgrading. Do you know which firmware corresponds to S9V2.23? The filesystem is dated to Jul 21. Or is there a way to dump it directly?

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14367,"Date: 2011-06
Topic: Can you explain this behavior?
### Original post:
I didn't have a backup miner running until this evening but decided it would be a good idea to maximize b$ return. I am running a 5770 @ 960 core and 600 ram and pull a constant 200-220 mh/s usin guiminer with -v -w 128. After adding the backup and flags -f 60 to the primary miner and -f 100 to the backup I find the primary miner is still pulling 200 mh/s yet the backup is pulling an additional 75 mh/s. Is there something I am missing here or perhaps a way to capture the 75 in the second miner and bring the primary up to 275mh/s?

### Reply 1:
There must be a mistake, as a 5770 is not going to be pulling 275-300 MH/s without nitrogen cooling and an extreme overclock + volt mod.Most likely the load keeps shifting back and forth between them, and the output displays are out of phase with each other(so instead of seeing 100 MH/s + 100 MH/s at exactly the same time, or 125 MH/s + 75 MH/s, they're updating out of synch with each other.)My 5770 clocked in the 900's gets in the 200-210 range. Also a tip - lower your ram to 300 or 302, it will cut power, heat, and increase hashrate.

### Reply 2:
<link> be a guiminer issue. Says I'm pulling almost 400 now

### Reply 3:
There's no way you're running around 400Mh/s and getting 190 shares in per hour. My 5850 gets ~250 shares/hour at ~300Mh/s

### Reply 4:
Fairly obvious that 388 ~= 189x2. Until the first worker kicks back in and updates its hashrate it just holds that value then adds the second worker to it. When the first one reconnects you'll see it drop.

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19506,"Date: 2014-06
Topic: Bitmain Antminer S2 Won't start ! HELP!
### Original post:
Hello.I have recently bought and Antminer S2 and today I powered it off and then I wanted to power it back again and now it won't start anymore !Help !

### Reply 1:
Does it turn on and the fans stay on full blast or just not power up? If it's the first one, you probably have a corrupted SD card. You'll need to take it out and reimage it. here is the firmware image. You can write it to the card using this after it's formatted.If it just doesn't do anything, make sure one of the PCI-e power connectors didn't come unplugged. They tend to do that pretty easy (happened to me a few times).

### Reply 2:
it just won't start at all.

### Reply 3:
because recenly bitmain s2 use another cheap psu replace the oringin psu

### Reply 4:
if you have a spare psu take out all but one hashing board and hook up all the pcie connections you have.. they are paralleled on board so it wont matter if you have only one or two pcie as we just trying to troubleshoot for a bad psu... once ya hook it up then see what ya got.. also Im sure ya checked the breakers on the plug outlet also..ive got several s2 and have run into several issues that ive been able to resolve without sending back to bitmain.. recently being the abitlity to save your settings after reboot.. it was a pain when 2 s2 where fighting for the same ip 192...99. had to keep going to farm to fix manually as they weren't accessable with two on same ip the latest firmware fixes that now... hope this helps ya:Dedit : also check the main line from the psu that would have connected to the motherboard of a computer.. it may have the wire loose that tells the psu to turn on.. similar to what is need to make the psu come on on the antminer s1 setups.. shorting pin 4 and 5 on the motherboard conector to activate the psu.. lookup to make certain on the pins.. ive never had one not turn on to look at how they make the psu activate.. not sure if its a jumper wire or an actual<rest of post truncated>

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8686,"Date: 2014-12
Topic: [Review] A Spondoolies-Tech Sp20 in Italy
### Original post:
No comment on how absurdly loud they are? What's your reading on that?

### Reply 1:
just for you koontas, Spondoolies have reduced their prices yet again.you're welcome.

### Reply 2:
It is definitely loud when running at full speed.With my iphone and an app (I don't know how accurate it can be) I've read 78 db at a couple of meters from the fan with fan at 90%.I've not yet downclocked it, so I can't say how much more silent it can be, but at 80 or 90% fan you better keep it outside your <truncated>

### Reply 3:
Their aren't any fans that can push the amount of air needed to keep them cool enough to hit their target speed, AND keep quiet.But you can run them in ultra low power mode and still get great results, sound wise at 40% the fans aren't so bad.

### Reply 4:
I'd say part of the sound comes from fan's vibrations amplified by Sp20's case.I did not check whether the fan has spacers/silencers (I'm not sure how to call them) between itself and the case.spiccioli

### Reply 5:
mine is in the room next to my lounge, when the wife gets home from work, I drop the power down and fan speed to 40, it's not so bad, can only just hear it and tv noise drowns it out easily.to be fair, if you adhere to philipma1957's downclocking specs, it's a far more efficient miner <0.55w/GH - it's pretty much equal to my SP31, which does 0.53w/GH on stock settings.note: the SP31 is NOT in the 2nd lounge room next door!

### Reply 6:
Unfortunately the fan sounds like that even outside the case.

### Reply 7:
Little title change as per <link>

### Reply 8:
I've added the background section and a photo of my first units never shown before in the Interwebs! spiccioli

### Reply 9:
I will alter my links to reflect you are the first review posted<link>

### Reply 10:
Awesome more pics please ..

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20440,"Date: 2015-05
Topic: Mining Software
### Original post:
I've got 5 Antminer S5's running and plan to buy a whole lot more soon. The more I buy, the harder it is to monitor all of them by going to each of their individual ip pages in my browser. Is there an easier way? I'd love to have one interface with the ability to control about 100 miners.Thoughts?

### Reply 1:
Here, check these:<link>

### Reply 2:
I have download MultiMiner.exe but my antivirus say that contain virus??

### Reply 3:
what antivirus? because perhaps it a false positive, anyway run it in a VM, and point your miner to that VM using your host

### Reply 4:
There is also Minera, now (v0.5.0) it has network devices support too like Antminers. Give it a try:<link>

### Reply 5:
I would look at M's Miner (Ant/SP) Monitor v5.2: - <link> will not contain a virus, and is well known. So that is a plus.

### Reply 6:
Hey guys - thanks for all of the great suggestions on this one from a noob. I tried pretty much all of your suggestions over the past few days and had varying results from, ""can't figure it out"", to ""wow - this works great and was exactly what I needed!"" In the end, what worked AWESOME for me was M's Miner Monitor. Perfectly simplistic and shows you exactly what you need. Easy install. Setup was a cakewalk, even for a noob like me. This nifty tool has a couple neat interactive switches, such as reboot for individual minors. Some global switches would be awesome though! Thanks again everyone!

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23905,"Date: 2022-04
Topic: B11 Bolon Miner Dashboard not pulling up with correct miner IP address -HELP PLS
### Original post:
Help please. Sorry If i put this in the wrong place but Im not sure where else to get help. Im a mining noob and having a lot of trouble pulling up my bitcoin miner dashboard via IP address.I have a B11 Bolon Miner that is plugged in, connected to internet via ethernet cable and ready to go.I located the IP HOWEVER when entering into my browser I get the following error.?The plugin does not support this browser.Please use the following browser:1. internet explorer 8 and above2. firefox 51 and below3. google chrome 44 or lower?You would think its pretty self explanatory however it is very difficult to download older browser versions. I would have to go back to windows 7 in order to do this. Have you seen this error or know any way for me to resolve? I just want to get into my miner dash to link my wallet and check hashrate etc and im going crazy SadASUS ROUTER AX5700 DUALBAND GIGABYTE ROUTERUSING TP LINK ETHERNET CABLE EXTENDER

### Reply 1:
It sound like it is using some REALLY old plugin that is no longer supported by a modern (2017+) browser.For a 32 bit ESR (but still unsupported) version of FireFox you can go here <link> is the US -English versionFor 64 bit or other languages you can start here: <link> and drill down.BE AWARE THESE OLD VERSIONS WILL HAVE ISSUES AND SECURITY HOLES. DO NOT USE THEM FOR ANYTHING OTHER THEN CONTROLLING THE MINER.-Dave

### Reply 2:
You may want to test if a ""User-Agent Switcher"" is all you need. I saw this extension/plugin solve many incompatibility problems. You can download it from the different stores for Chrome and Firefox. Setting the desired browser and OS may simply solve your problem.Greets.

### Reply 3:
You don't need to download anything if you are using Windows 10 you can use IE 11 since the error shows that internet explorer or above will work.If all suggestion anove do not work then try this browser below.- <link> mostly use this tool to use in SEObook plugins.

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9248,"Date: 2015-07
Topic: [Review 14] Spondoolies SP20
### Original post:
Spondoolies SP20Disclaimer: I was given this unit in exchange for my honest review. P2Pool was used for hashrate testing.My SP20 was delivered by Federal Express and required a signature. It was held firmly in place by cardboard and I think that was a good choice given the miner is well built and has a protective casing with no exposed parts.Setting up this miner was a breeze. It was as simple as plugging in 4 6-pin PCIe power cables and a network cable. After your cables are plugged in, you power it on and hear the fan spin up and down a few times before it is ready to go. The miner starts up with a default fan setting of 80. This is definitely loud, similar to a hair dryer or Prisma, but you do have the option to lower the fan setting down to 40. I found using a fan setting of 40 keeps my miner plenty cool and about as loud as a microwave, which doesn't bother me when it is behind a closed door. The interface for this miner is great and full of options. You navigate to myminer.io using any browser on your network to enter your pool information or adjust voltage/fan settings. Since I like to mine as efficiently as possible, I thought I would try some of the lower voltage settings <rest of post truncated>

### Reply 1:
I like my SP20 and am appreciate of Spondoolies for sending me one, so I decided to place an order to buy another one.

### Reply 2:
Thank you. Check RoadStress's GB

### Reply 3:
Just received my order from Spon-Doolies and very satisfied with the deliver. I ordered 3 SP20 Jackson mining rigs and they look beautiful. Ordering my 1300w PSU and want to know if ""EVGA SuperNOVA 1300G2 ATX12V/EPS12V"" 1300W 80Plus Gold Power Supply 120-G2-1300-XR ---- from -----> <link> work?Also what would be the best pool for that, that you would recommend ?THanks

### Reply 4:
the evga 1300 g2 is a good psu. pools are hard to pick from.I use <truncated> someone else can pick one for you

### Reply 5:
How many miner will you hooked on evga 1300?

### Reply 6:
Hi,I have 1 EVGA hooked up to each SP20 rig. So 3 EVGA's and 3 SP20.

### Reply 7:
I love how rock solid these units perform. Not to mention how easy it is to upgrade the firmware and adjust the voltage. Really happy with mine thus far.I recommend this one: <link>

### Reply 8:
That's good psu, I bet the load on each psu is around 50%.

### Reply 9:
After mining away perfectly for 8 months without needing so much as a restart, my SP-20 has now become unresponsive. Anyone have any ideas? I literally haven't tried anything but a restart, as I just recently noticed it was not responding to attempts to access the GUI. Should I try a hard reset (is that even possible)? Any advice would be much appreciated. Thanks!

### Reply 10:
A lot of controller seems to failed these days ... Hope it's not that.I would start by plugging only 1 PCI-E in port 1. 1. Power off2. PCI-E in connector 1.3. Power on.4. Repeat for the other connectorI had the same trouble and I managed to get it back by doing that. You can also power off and on the same connector a few time. I got my machine back with the PCI-E connected in Port 1.

### Reply 11:
I had something similar happen with also 8 mo old SP20E.At first it looked dead with double blinks of the yellow light.I restarted the PSU and router, reconnected ethernet cable, checked PSU connections.Still the same (no hashing), but after ~5 min I was able to see it on myminer.ioI connected to the gui then and simply restarted the cgminer and SP20 started <truncated> I noticed that one ASIC was overheating (which was not the case with these settings before). Tried to switch voltage down a little-still overheating.I then simply switched that ASIC off in the advanced panel. Everything is back no normal (fingers crossed) and the miner is much more stable. I could have increased fan-but i have somewhat sensitive ears and cannot tolerate fan at 20 and above. Will probably test at 30-50 before selling (if ever) because I think that the eighths ASIC is OK, just needs more cooling.You can also check my post about this in unofficial thread, but it is pretty much the same in even less #of words.

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14125,"Date: 2011-06
Topic: BtcMine Payout is going faster but....
### Original post:
is it me or is anyone else noticing BTCmines Payout time is becoming shorter and shorteralsoim noticing lower and lower payments, i have it on 1 btc payout1.19 05/29/2011 12:32:00 05/29/2011 12:46:441.18 05/30/2011 13:13:14 05/30/2011 13:31:421.06 05/31/2011 07:42:16 05/31/2011 08:05:111.03 06/01/2011 00:45:45 06/01/2011 01:08:221.01 06/01/2011 18:17:10 06/01/2011 18:32:16

### Reply 1:
So wouldn't that just mean their overall hashrate is increasing? They are finding blocks faster but your mining is composing a smaller proportion of the overall speed so your payments will be smaller. It should be a wash.

### Reply 2:
i think your rightim thinking new miners, and miners from deepbit are moving to btcmine

### Reply 3:
Sounds like the pool is having a lucky streak.

### Reply 4:
More miners = faster block finds = faster payouts.More miners = smaller payouts. (Because you are doing proportionately less work than before.)

",[]
9471,"Date: 2015-11
Topic: configuration for U2
### Original post:
is this configuration ok?Sometimes my U2 works perfectly and sometimes not.Now it does not work.

### Reply 1:
And now it does work perfectly.Is here someone who has the same problems with an antminer U2...?I have tested my U2 with 2 different poolsif it works with one it works with both.if all works perfectly the green led goes on and off so long it works.It happened that the green les stayed on...but no mining then...what does this mean?

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11416,"Date: 2011-06
Topic: The Ballad of the Bitcoin Miner (v0.1-alpha)
### Original post:
The Ballad of the Bitcoin Miner (v0.1-alpha)(To the tune of ""Rawhide"" by Frankie Laine, though preferably performed a bit more like the Dead Kennedys' cover: <link> hereby dedicate these lyrics to the public domain under the terms of the Unlicense (<link> hashin', hashin',Hashin', hashin', hashin',Hashin', hashin', hashin',Hashin', hashin', <truncated> Hah!Keep hashin', hashin', hashin',Oh my box is thrashin',Keep them miners hashin', Bitcoin.Fifteen machines in tandem,But it's so bloody random,An' I got this achin' in my groin.All the things I'm missin',Good vittles, love, and kissin',Will be waitin' for me in Des MoinesAin't no fool, gigajoule,Power tool, keep 'em cool.Ain't no fool, <truncated> 'em out, cash 'em in,Join a pool, keep 'em cool,Mine 'em out, cash 'em in:Bitcoin!Hah! Hah!Hashin', hashin', hashin',Though the market's crashin',Keep them miners hashin', Bitcoin.Just let me solve the next block,And I'll go back to Bangkok.I've had my fill of Des Moines.Em dee-five's calculatin',My true love will be waitin':Waitin' for me with sirloin.Ain't no fool, gigajoule,Power tool, keep 'em cool.Ain't no fool, <truncated> 'em out, cash 'em in,Join a pool, keep 'em cool,Mine 'em out<rest of post truncated>

### Reply 1:
Haha that's gold!!

### Reply 2:
heh. pretty good.now all you need is a poll:1.) i know this song from the TV series.2.) i know this song from ""The Blues Brothers"" movie.3.) i know this song from the Dead Kennedys.nice to see a proper trailing apostrophe, BTW...

### Reply 3:
LOL, excellent.That reminds me, I must buy the Rawhide box set, if it exists

### Reply 4:
Brilliant!!!

### Reply 5:
2, definitely 2.

### Reply 6:
definitely #1. clint eastwood every week...gotta get that on dvd. i wonder how well it holds up?OTOH, The Blues Brothers holds up pretty damn well.

### Reply 7:
I thought it was SHA-256, not MD5

### Reply 8:
Be fun to remix this video for bitcoins, there are a few good places to put in a few fun words and then add in some bitcoins flowing out..<link>

### Reply 9:
Told you it was an alpha version...

### Reply 10:
WoW !! *applauds*probably someone[familar with something like LF, AL, Reason or ModPlug]can even write music for this -)and/or publish karaoke file ;P

### Reply 11:
Haha, try singing Ess aych Aay two fifty six !

### Reply 12:
yayy very nice!

### Reply 13:
Hmm. I was thinking about this on the bus <truncated> cal-CU-late-in' (7 syllables, stress on <truncated> a-CRANK-in' (7 syllables, but stress on 2/6)Gee-PEE-yoos cal-CU-late-in' (7 syllables, stress 2/5, but awkward)Sing along now, y'all...

### Reply 14:
*dances*

","[
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  },
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    ""hardware_name"": ""machines"",
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]"
20875,"Date: 2016-01
Topic: Antminers hashing differently - Setting up.
### Original post:
Hi, I have 2 Antminers hashing differently. Want to know if this is common or could be corrected with tweaking ?<link>

### Reply 1:
What are they? Antminer S3's? Could you post a pic of each WebUI status page instead? Also try a proper pool, like Kano.is to monitor at the pool side. You can then use <link> if you want in depth back-log of your miner's performance.

","[
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    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": false
  }
]"
15887,"Date: 2017-03
Topic: Solar Mining
### Original post:
Hey Guys my name is Dan and im trying to find a way to power a antminer r4 by using a solar panel/wind turbine solution but i cant seem to find any.Help is much appreciated.

### Reply 1:
That is pure crazy here. You must store big energy in backup when there is no wind/solar power.So power storage is expensive, solar/wind power is expensive, what u trying to acomplish here? To loose money? You can do that easier

### Reply 2:
Read the whole post, dude. You can't be running your mining hardware up to 24 hours and it's mean you will never be profitable.

### Reply 3:
Running 24/7 isn't gonna help..

### Reply 4:
Just like what other members said above this just a pure crazy thing or idea on planning to have a solar or alternative electricity source on just powering up or operating an R4 miner and planning to have solar mining which we all know that it is expensive to build one and its just really a waste of money and a nonsense step to consider.

### Reply 5:
for now, i think yes that power energy is expensive but with the new technologies, i think we can buy the equipment when the price is down and we can trying to use in our home. but its need a lot of to do before that energy is ready to use.

### Reply 6:
As i see very hard to accmplish the task, maybe you can find some cheap solar panel here<link>

### Reply 7:
I know guys who are manufacturing solar panels in Europe for export worldwide. If you need cheap ones I can ask them what price they can offer.

### Reply 8:
Buying used solar panels is risky. Normally they go out of order sooner than you expect and fixing them cost money. I don't know about a wind turbine but you can forget about profiting using solar for now.

### Reply 9:
I bet since they are manufactured in Europe they are of really high quality. I have seen it take quite a lot of the older Solar panels bolted to a roof facing South, just to heat a swimming pool during the Winter time mid December until mid March in Southern Nevada just outside of Vegas an area known to have historically warmer Winters. I wonder if a combination of say high end European Manufactured Solar Panels along with one of those Wind Turbines with the 3 ft Titanium Props mounted 30ft in the air on a well secured ground pole. The combination of the wind and solar power produced could be stored in golf cart Batteries that feed into Inverters to convert the energy that then feeds the Bitcoin ASIC Miners. Keep a clean running Natural Gas Generator hooked into the grid to serve as backup on Cloudy/Rainy/Zero Wind days.Even if a situation were to be properly fine tuned to work, its my guess that equipment costs which could include construction of specialized fire proof sheds to house all the 12-24 Volt Golf Cart Batteries, Inverters, Proper Cabling, concrete pad poured for the Pole with the mounted Wind Turbine, Solar Panels, Wiring, a couple Antminers and an electrician to over s<rest of post truncated>

### Reply 10:
I believe solar is still too expensive to make a profit using it for mining (for the most part).

### Reply 11:
Wind turbine as high as two storey i think will be enough. Alternator or maybe a DC motor will do the job, horizontal turbines works well than the vertical by the way. Two large car batteries can last i think. but you may not be able to mine Bitcoin, Asic devices will drain your batteries. you can do it with GPU. ETH or XMR is good.

### Reply 12:
That's are not used but new....in all case i agree that is not best choice, and panels in the link are only for <truncated> here is a 300 watt solar wind turbine, place it in yur garden and get your BTC blocks <link>

### Reply 13:
The wind generator turbine you are referring to can produce up to 300 Watts Max and it costs approximately $300. You will need four of those for just one Antminer S7. You can do the math to see how ""efficient"" is that.

### Reply 14:
In fact you are absolutely right, it's not efficient....my link was referring to OP that said he can't find one....The problem isn't to find it, but that the revenues from mining with solar/wind energy didn't cover expense....better to mine with traditional power energy

### Reply 15:
In the logic, if that will be decreasing the lifespan of batteries. And the consumed power has used for running an ASIC, it can be distributing for running some GPU.

### Reply 16:
It wont really cover the expenses since we all know that using those alternative source of electricity is expensive which means its not really profitable and roi would be longer and we should think that our miners would anytime would bust. SOurce of electricity+ maintenance will cost you a lot.

### Reply 17:
That's what I'm talking about. Even paying $0.2 per kWh, which is a relatively high price, is more efficient than using solar panels, let alone in places where electricity is cheaper. I'm not sure that the situation is the same with using wind energy though.

### Reply 18:
Given the fa<rest of thread truncated>
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  {
    ""hardware_name"": ""solar panel"",
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  {
    ""hardware_name"": ""wind turbine"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""solar panels"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wind turbine with the 3 ft Titanium Props"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""golf cart Batteries"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Inverters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Natural Gas Generator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Alternator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DC motor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""car batteries"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wind generator turbine"",
    ""hardware_is_owned"": false
  }
]"
13106,"Date: 2014-06
Topic: Intel MIC mining software
### Original post:
I have a window host with a Intel Phi. I want to mine with cpuminer with native mode. But it does not work.So I want to know are there any mining softwares with Intel MIC?

### Reply 1:
What you've checked the command to run?try to provide a screenshot to more easily observe your problem

### Reply 2:
Probably obsolete by the time it's released, if not already. Unless you want to mine Litecoins.

","[
  {
    ""hardware_name"": ""Intel Phi"",
    ""hardware_is_owned"": true
  }
]"
9308,"Date: 2015-08
Topic: FPGA Development Board with Bitcoin Miner
### Original post:
It came by an add while scrolling trough my facebook timeline, does anybody has any experience with this development board?URL : <link> is an FPGA Development board for a raspberry pi including a bitcoin miner.

### Reply 1:
FPGA hasn't been cost effective for Bitcoin for years. Ignore that.

### Reply 2:
Read through it and saw no reference to bitcoin mining. Fpga yes, but that was used just before asics.

### Reply 3:
Under 'Overview';-> <link>

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  },
  {
    ""hardware_name"": ""raspberry pi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asics"",
    ""hardware_is_owned"": false
  }
]"
9189,"Date: 2015-06
Topic: Bitmain S4 running 3 pools in balanced mode
### Original post:
Ok so i have a problem...My miner is telling me i found a block but i'm running 3 pools in balanced mode so i dont know what pool i hit the block on.Is there anyway i can find out if what pool i hit the block on??Like any logs hidden in the miner?

### Reply 1:
I'm not sure what was happening but i was messing around with cgminer in ssh & think the blocks it found were either stale or orphaned, Not too sure what caused it but i actually broke the software on the sd card & had to fully reinstall it on both a C1 & an S4

### Reply 2:
Which pools are you connected to? Is it a Prop pool? if so you can check your statistics in there. Also F2pool can tell you also if you found a block.

### Reply 3:
I was solo mining Ck's pool with F2pool & Nicehash... All at the same time.. in balance mode..I did look thru my site stats & nothing was there...I did look thru my miner stats & i was getting a lot of stales & a lot of orphans on all pools..It ended up at one stage my miner was telling me i had popped 13 blocks in about 2 hours...When i powered down my miner & powered up again, My miner wouldn't hash & i had to re install my sd card to get it to work again.. Bitmain has said in the past if u fuck around with cg miner in ssh u can break ur <truncated> experiment taught me a few things thou...If u balance or load balance an Antminer C1 or S4 thru SSH in wont save on reboot & if u try save in thru cgminer, Things will get wacky..Also when u load balance or balance the SSH the miner never reaches its full speedExample = S4 = 2TH when split across 3 pools in either balance mode the max u get is about 400gh on either pool at the same time meaning ur shorting ur self about 800gh doing this.A better thing to do is to rotate across 3 pools at 20 min intervals, Make sure u solo mine 1 pool, & whatever other pools u use pay out on Pay per share not any other method to maximise ur payments.To<rest of post truncated>

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    ""hardware_name"": ""Bitmain S4"",
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    ""hardware_name"": ""C1"",
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  },
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    ""hardware_name"": ""sd card"",
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20973,"Date: 2016-03
Topic: Extend network for miners
### Original post:
HI guys. Need help. It might sound noobie but I keep my miners in my garage outside.I used POwerline to get internet there. WOrks great with titan. Problem is I have only one ethernet socket there.Is there any way to extend it? router? or is it switch? sry bit noob with network

### Reply 1:
You'd want a switch.

### Reply 2:
And your lucky as it does not take anything super special with bandwidth being low. So get a reliable switch, but does not have to be the fastest out there. So lot's of good cheap options. Might plan ahead on how many devices you max is on picking size.

### Reply 3:
<link> has 8 ports allows 1 in and 7 to minersmetal bodied sturdygood choiceand the 16 port 1 in 15 to miners<link> the 5 port 1 in four to miners<link> have owned all three with zero issues

### Reply 4:
I've got a bunch of tplink 10/100 switches all over my hosting, zero issues in a year and a half. Got 'em on eBay for abut $14 apiece.

### Reply 5:
I've never been impressed by TP-Link, though they're not BAD - unlike some of the other cheap stuff out there (DLink and Linksys come immediately to mind).I don't bother looking at reliability after a couple years. If it's a switch and it don't last a decade, it's cheap junk.I've tended to stick with Netgear ""blue box"" switches - they just keep going and going and going (some of mine are pushing 20 years and STILL running fine - as is the one Netgear blue-box 10-Base-T HUB I have, at close to 25 years of use, though I'll probably retire that one eventually as I'm moving everything to at least 100-Base).I do have one old 3-Com switch, got it cheap at a hamfest along with a buncha 3c509 cards - the cards are about to get retired as they're ISA and I am retiring the last of my ISA machines this spring/summer (20+ cards all 20+ years old, a few have lost the BNC port but ALL of them still work on twisted pair and most are 100% functional still), the switch just keeps running....I did make the mistake of buying one of Netgear's ""consumer"" type plastic-case switches. Once. Never again, it lasted a few years (past warrenttee) but is more than a bit flaky in recent usage, to the point it's<rest of post truncated>

### Reply 6:
thanks:) was looking at something similar <link>

### Reply 7:
Yeah, those Netgear ProSafe switches are nice. I bought a 10-port gigabit in I think 2009, been in constant use without a hitch since then. If I was setting up any kind of permanent network (and had a decent budget) that's what I'd get. I bought a bucket of the cheap switches for hosting because I would need a bucket of them (I have about 20 customers now) and stuff's always moving around and miners are pretty low-demand. The core of the hosting network is a 24-port managed Cicso that's at least a decade old; after swapping some bad caps on the power board it's been working fine.

### Reply 8:
your pick is the plastic case I don't like them. the only switch to ever fail on me was plasticsince you are uk this is a good 8 port below<link> this one<link> is a good one

### Reply 9:
I don't know if I would say I'm anti all plastic. I have actually used a decent amount of switches and some are good and still use plastic. I would base it more on the brand. There are some bargin ones that will work... but you right there is a better chance of problems.I know have at least one netgear plastic one in my network and it's never had an issue.

### Reply 10:
I've got a nice metal-case Dell-branded 24 port 10/100 that kicked out about half the ports in the last year. It might have dropped all of them by now, I don't know. It's a big paperweight now.

### Reply 11:
Most of my older switches are the FS108, though the newest are GS108 or GS105 (Office Depot had a heck of a sale on the GS105 a while back, so I got a couple).Nothing inherently wrong with plastic - my 3Com switch has a plastic case - but in Netgear the plastic-case stuff tends to be their relatively cheap stuff.

### Reply 12:
will 100mb switch be enough for KNC titan 400mhs and another miner 100mhs?

### Reply 13:
none of the miners use any large amount band which you could get way with using a 10mb switch if that's all you had i use 10/100/1000 net gear 8 port switchs,I have 4 of them, and use one for Mining, 2 for the net work it self in my home those two have open ports and one is collecting dust right now because i sold off all most all my home farm it was using which was a mistake .I should have waited a little longer. at one time i had 8 ti 9 miners running in my home now maybe four, most of the time 2,waiting for the new stuff to come and hope i can afford it, is why i should have waited . mine are all in metal cases . and there is nothing wrong with plastic that I know of, can't say i all way bought metal ones never paid to much attention to the case when i bought it.

### Reply 14:
Quint, I'll second your post about buying quality gear. I finally made the switch to all Ubiquiti<rest of thread truncated>
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    ""hardware_name"": ""Titan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Switch"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""tplink 10/100 switches"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Netgear \""blue box\"" switches"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3-Com switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Netgear's \""consumer\"" type plastic-case switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Netgear ProSafe switches"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""24-port managed Cicso"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Dell-branded 24 port 10/100"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FS108"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GS108"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GS105"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3Com switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""10/100/1000 net gear 8 port switch"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Ubiquiti gear"",
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11483,"Date: 2011-07
Topic: MSI Afterburner not saving settings for both cards after reset?
### Original post:
Afterburner is not saving settings for both GPUs after resetting.It keeps the first card's settings w/o opening Afterburner again (I know by checking Catalyst Control Center)but the 2nd card reverts to defaults in CCC after i run a minerin Afterburner I tried all the options (checking the sync both cards, and manually setting each card), I also checked the apply settings at startup, and unchecked it too, of course all the memory underclocking stuff works when i hit apply, but after every restart it loses the settings on the 2nd card.notes: 2nd card is dummy plugged w/ resistor

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    ""hardware_name"": ""first card"",
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  },
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    ""hardware_name"": ""2nd card"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Catalyst Control Center"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""dummy plug"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""resistor"",
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16908,"Date: 2011-08
Topic: First time mining, sort of...
### Original post:
So according to my tracking information, my Diamond 5830 card should be delivered today, this isnt going in a ""mining rig"", but my everyday used custom build pc. The computer is running 24/7 anyways, so i figured i might as well make some bitcoin while its running. Its a AMD 2.5Ghz Quad-core w/ 4GB 800Mhz DDR2 and Win7 - it currently has a NVidia GT 220 that gets 10mhash/s. Im using deepbits pool with proportional payments and guiminer.What i need to know is, should i change my miner, or my payments setting to get an increase in bitcoin? What threads/articles should i read before getting started? Is there anything else i should know?I just want to be as prepared as i can be to try to maximize my coins.My System Information

### Reply 1:
I use and love cgminer, <link> consistently faster and less stales than guiminer.Make sure you fully remove ALL nvidia drivers before installing ATI cardthen all you should need to do is install ATI drivers and start mining ""payments setting to get an increase in bitcoin?"" mm unless you mean move to a different payout scheme payment settings make no difference to Bitcoin mining output. also look around at other pools. ""biggest"" doesn't always = best good luck with it, hope card arrives soon for you

","[
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    ""hardware_name"": ""Diamond 5830 card"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""AMD 2.5Ghz Quad-core"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""4GB 800Mhz DDR2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NVidia GT 220"",
    ""hardware_is_owned"": true
  }
]"
7978,"Date: 2014-06
Topic: [Overclock the Antminer S1 to 200GH/s] The EASY way!
### Original post:
Nice tool to help folks. BTW, I've been using the values from the S1 guide to get to 400MHz:Code: option 'freq_value' '0780' #400M option 'chip_freq' '400' option 'timeout' '36'Anyone know which of the 400MHz approaches is ""best?""

### Reply 1:
Early, really? I just got it a few days ago through sushi's pre-new year 1.9 BTC blowout.Edit to add: I tried your 400MHz settings anyway (since that matches what was in my default asic-freq as suggested), and it seems to work. Maybe even +1 GH/s.

### Reply 2:
***** We may be having a miscommunication. I'm thinking you have the latest version but followed an overclock guide that uses the values from the earlier version of the Ant S1, no? *****Sorry but below is the original overclock guide from goxed. As you can see he mentioned your S1 version. On another note, check your kernel log (under system tab) and see if you have the latest Firmware. That's most important. It should say 12-26-2013 on the top right hand corner.<link>

### Reply 3:
The dropbox idea is a good un I like the approach you have used, I have been scp'ing files between ant's instead. A couple of comments if I may. You might want to change the mv to a cp in case of a problems such as a power outage because then an asic-freq will always exist regardless and the wget with an -O should clobber the original. The last three lines can also be removed as the wget will put the file with workable permissions. Personally I would just add a reboot command to the script but that may freak a few noob users.

### Reply 4:
Thank you! We're getting a lot of new people in the mining scene because of the Antminer S1's and I figured anything to help them out. I'm a huge fan of Bitmaintech, as I bought from the sushi GB5 and now directly from Bitmaintech and both machines are very stable! No pretty cases, but well-built and performs as advertised (plus more with OC)I used mv as I don't like to mess with factory system files (if I can help it). It also keeps the date and time of the original files. The permissions I saw were rw/rw/r on the original asic-freq file so wanted to change the ones made by cp/wget from rw/r/r to be the same. It's probably ok.Can't wait what Bitmaintech will announce after the Chinese New Year! Maybe cheaper Ant's? or More powerfule machines?! The last difficulty adjustment was not crazy (imo) so maybe it's leveling off....PS: I forgot to add, if by some coincidence you get a power-out right after the mv command was issued, just ssh to the miner again and execute the copy and paste and it should be ok. Re-running the process duplicate times should not hurt anything...

### Reply 5:
This is really a great help!!I got 6x S1 incoming, and this excelent tutorial will serve me well. Gonna tip for sure.I wish someone would have the baals to do a similar tutorial for knc machines...Anyways, big thnks!!

### Reply 6:
You're very welcome! Thank you for the nice words. If you have any questions, just let me know. I do hope you're not in Southern Cali (or any warm-weather location) as I've had to turn the first Ant S1 inside-out (heatsinks on the outside). It looks like I may have to do the same on the 2nd Ant...Overclocking makes the Ant's warm. I don't want the any blade to hit 52C, so I sometimes go back to stock. Yesterday had to turn the AC on as I didn't want to drop the speed, lol! I think it's worth it.

### Reply 7:
Yep, I followed the old guide even with the new version - it worked fine, but I'm now using the correct values that you have (and were in the default asic-freq file as a guide). My firmware is Dec 12, 2013 actually since I went back one version to avoid the excessive beep/rebooting I was seeing (I have my Ants temporarily far away and sometimes they have difficulty with solid connections. After this week, I'll have them in a much better place and will be able to bump the firmware back to the most recent.

### Reply 8:
Thank you for the tip (to the sender)! First one I ever received! Very nice.

### Reply 9:
Good luck.Just fyi... I have to reboot my Ant's about every 24 hours as I see xx's on the ASIC's. I'm sure it's just cosmetic (because the hash performance is fine) but I'm still babying these as they cost more than my old beat-up car, lol. I can connect to my Ant's from anywhere so reboot is very easy using the web interface.

### Reply 10:
You do not need to reboot on seeing an 'x', it is a display bug, just watch the share rate on the pool of your choice.

### Reply 11:
option 'freq_value' '5e82' #400M option 'chip_freq' '387' option 'timeout' '37'Temps are 44/41, hashing at 200GHs.For my ant these are the optimal setting

### Reply 12:
Worked! Thanks for sharing.

### Reply 13:
I'm not sure if you're responding to op (me) or the poster above you, but if it's to the op, you're welcome

### Reply 14:
Hey Jeremy,Can you please do a 387.5 version?

### Reply 15:
I can do it very easily; but <rest of thread truncated>
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    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""knc machines"",
    ""hardware_is_owned"": false
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7093,"Date: 2014-02
Topic: {BFL} Jalapeno review on TigerDirect.com
### Original post:
I just posted my review on TD, so let see how many reviews they get from us Guys if you have a TigerDirect account please review the jalapeno. Please post your review here as well!~Lets Help those Newbies that don't know anything about BFL products Butterfly Labs Bitcoin Miner - 10 GH/S Processor<link> me know if I should add anything else to the thread Thanks

### Reply 1:
To my knowledge there is no other of the shelf miner with all the end-costumer requirements (housing, shiny box, manual, psu etc) available...There should be one.

### Reply 2:
Yes there are,quite a few.How about all the USB miners,low hashrate,but they are self contained except for the USB hub.Fairly easy to setup & mine with.BFL's miners would be great...if it weren't for the DELAYS,go ahead & order one right now,post back here when it arrives & the power brick failures,& lack of customer support Also,if customers don't do their RESEARCH on stuff they buy,like how to use an item or power efficiency or cost effectiveness (IE:$ per GH),who's gonna do that for them BFL Before I buy a part for ANY PC I build,I RESEARCH ALL the parts for <truncated> with <truncated> <truncated>

### Reply 3:
Are BFL products FCC, EC and ETL approved? Nope.

### Reply 4:
UL? RoHS?

### Reply 5:
But,they are ROFLMAO approved!!!!!!! & USCWOAP approved too !!!!!!!!!!!!!!

### Reply 6:
Its been 5days now and TigerDirect will not show peoples reviews

### Reply 7:
I would assume joshypoo and co already gave TD a heads up about ""negative"" reviews for their pewp-miners.. thus TD may be restricting approval of publishing reviews to confirmed buyers only?

### Reply 8:
Did you inquire with Tiger if this product met these requirements for sale in the U.S.?

### Reply 9:
I can't access their site from Indonesia. Thankfully.

### Reply 10:
Only one review but it doesn't show the comment

### Reply 11:
At least it reflects the value... (One of five stars) lol... that is one star too many.

### Reply 12:
I hadn't even noticed the ""star"" rateing Maybe there should be a ""blackhole"" rateing

### Reply 13:
There ain't no stinking manual. These are no more consumer-friendly than anything else.

","[
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    ""hardware_name"": ""USB miners"",
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    ""hardware_name"": ""power brick"",
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14299,"Date: 2011-06
Topic: mining into a safe wallet
### Original post:
Hi,my mining rigs are to be set up in a rather insecure server room and I'd feel better not running a bitcoin client collecting millions of blocks stored in that insecure environment. Can I set the miner or the client to assign blocks to a specific bitcoin id?As I'm not running the rig alone it would even be better if I could configure it such that 20BTC go to id1 and id2 and 10BTC to id3? I've seen there are pool(s) that do that.Regards

### Reply 1:
bitcoin id? wtf is that? You can always get a e-wallet, and send your payments there.

### Reply 2:
Are you solo mining?If not, there is no security concern, your wallet ID is stores at your pool and your private keys on your personal computer.

### Reply 3:
Whatever you call that thing after Bitcoin: in your signature.I'm not planning to do pooled mining. My setup at home now has a miner and a bitcoin gui client running and somehow magically it manages to make rewards show up in just that client's wallet. I want to control in who's wallet the coins are to show up and best would be to be able to reward more than one.

### Reply 4:
you can point all the miners to a single server. that way, all the coins will be rewarded to one wallet. The server, of course will have to be offsite. If you want to split the earnings, just have a cron job that sends out bitcoins regularly.

### Reply 5:
a cron job to create a transaction 100 blocks later would be the by far inferior solution in my eyes.well the whole point is to have the reward be charged to account(s) that are offline. As far as I understood, the miner needs the bitcoin ""client"" to connect to peers, collect the block chain and new transactions, determine the work to be done but it does not necessarily have to assign the mined block to an own id.How is this done for example: <link>

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    ""hardware_name"": ""server"",
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    ""hardware_name"": ""miner"",
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    ""hardware_name"": ""bitcoin gui client"",
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13115,"Date: 2014-06
Topic: Hashfast Babyjet and CGMINER on Windows
### Original post:
Hello, I tried searching the topic for past few days but could not really find anything. I was wondering if any of you know how to get Hashfast babyjet running using cgminer on windows computer. I am not much familiar with linux thats why i ask windows. I have two of these units and both of raspery pi crapped out so i have been unable to run them for several days now and i read somewhere that i can connect directly to the computer and run using cgminer. Can anyone please help? thanks a billion.

### Reply 1:
yes you can run on pc make sure you have the drivers installed so that the pc can see them. I used theses drivers for windows 7 and cgminer 4.3.4 <truncated> works fine for me also cgminer -o <link> -u blah -p blah --api-listen --api-network and with the api listen and network you can use the pepper mining app to see temp and other things works great on my babyjet.

### Reply 2:
I installed zadig and latest cgminer. On the same computer i am doing gpu mining with a different version of cgminer. Will that cause conflict? i am gonna try what you wrote above and let you know. Thanks so much for quick reply.

### Reply 3:
sorry that's a good question I don't know sorry. im just using a babyjet no scripting stuff if it is an issue maybe run cgminer in another instance>

### Reply 4:
If you're running an ancient unsupported GPU version of cgminer then you won't have any conflicts running two instances of cgminer since the old GPU version won't even know the hashfast devices. The only issue would be if you were trying to enable the API on both instances of cgminer - then you'd have to set one of them to a different port (see --api-port).

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    ""hardware_name"": ""raspery pi"",
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    ""hardware_name"": ""windows 7"",
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    ""hardware_name"": ""gpu"",
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19641,"Date: 2014-07
Topic: Second S2 Antminer is connected to network but will not hash.
### Original post:
On my network, I have one S2 Antminer with IP Address 192.168.168.99 that is successfully hashing at around 1000GH/sec. I added a second S2 Antminer, set up the IP Address as 192.168.168.98, achieved a successful connection with my MacBook Pro over the network, and entered the same three pool settings that are working well for my first S2. To my surprise, hashing does not commence. I have reseated the blades and control board and tightened the cable connections but it did not help. Pinging 192.168.168.98 shows a functioning connection. I am at a loss to try to troubleshoot this problem further and I welcome any suggestions.Thank you,Justin

### Reply 1:
Do you have a different user name for each pool? Maybe an image of your settings from the miner would be beneficial

### Reply 2:
Thank you for your suggestions. I finally recognized that the problem was caused by a port conflict. I changed the port settings and both miners are now hashing. Justin

","[
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9447,"Date: 2015-11
Topic: Looking for a 802 SEPC 270 16 Capacitor
### Original post:
I posted this in the market place but thought I also might try here as well. I am looking for a capacitor for my bitcrane ultrahoist board. I bought it used a couple of weeks ago and it came broken off. I borrow one from another board for testing but still need to replace the broken one. Any one have a board or a capacitor laying around? Or know where I can get one? Here is a picture. Thanks!

### Reply 1:
<link> similar, not sure what the top number represents but it's 270 uF and 16 V

### Reply 2:
Depending on where you live you could also get an equivalent from digikey. Here is one from Panasonic:<link>

### Reply 3:
Awesome info. I think those are both the same. I took that information and ordered one amazon. Should be here on the 3rd. Thanks for the help.

### Reply 4:
802 on the OP capasitor is probably a date code.

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    ""hardware_name"": ""802 SEPC 270 16 Capacitor"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Panasonic capacitor"",
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]"
15355,"Date: 2014-10
Topic: A case study in entry-level mining
### Original post:
This will make an interesting read 5-10 years from now.

### Reply 1:
I feel kind of bad reading this thread, mostly because this is a seemingly well-intentioned, rational human being, who most likely would be just the right type to reach out to folks across the aisle; and yet they are destined for a miserable experience from everything I've read.Bought BTC at a bad point, which was used to pay, with a fairly large markup, for a product that is already overpriced, right on the cusp of a time that will literally obliterate any feasibility of use for that product.So, while I can say I'm pretty certain of how your investment will go, I do hope that it won't sour you on the bitcoin experience overall. Enjoy the hobbyist side of patching all this stuff together at least.

### Reply 2:
Here are the AMUs. Yes, I paid a premium for them -- but guess what? They're actually here. I'm SUPER impressed by MineForeman aka Neil's professionalism and attention to detail. He went the extra mile to get these here quickly and safely. Many thanks.

### Reply 3:
I've always liked MineForeman since he joined up. He's been a stand-up guy.

### Reply 4:
Hey congrats on your success so far in only a couple months. Everything aside, you have a good amount of BTC PLUS a nice Mining setup.

### Reply 5:
For the USB hub you need to get the DLINK DUB-H7. It can power your Pi, plus 5 USB erupters and still have room to power a fan.

### Reply 6:
Yep, I've got one on order. EDIT: It's been shipped.

### Reply 7:
Fun thread. After my Jaly's arrive (very soon) and I've mined sufficient capital, I plan to invest in Erupters as well. Thanks for the step by step!

### Reply 8:
Truly great idea I can't wait to see how this turns out. Hopefully I can learn something, all the best.

### Reply 9:
This is a really awesome thread and I hope you keep up with it. Your transparency about personal progress is great to read and I'm sure would be an excellent resource for new miners.

### Reply 10:
So I've been hashing for 24 hours, and everything is running smoothly. The hashrates have reduced slightly overnight. Yesterday they were in the 335.5-336.0 range, and now they're in the 335.0-335.5 range. The tiny divot on the daily graph at midnight is my donation time to Neil. Hardware errors are still high, so I really need the USB fan to arrive soon. Current profitability is 60 mBTC per day. I was hoping for 70, but maybe this will improve when the cooling is installed.

### Reply 11:
cgminer 3.2.1 statsEDIT:Better cgminer 3.2.1 stats (24 hours later)

### Reply 12:
IT'S UP AND <truncated> photo

### Reply 13:
Very interesting stuff presented very well. All the best and please keep us updated.

### Reply 14:
Great documentation & thread idea!btw - the 2 hi-power ports on the D-Link work as normal data ports as well, no?

### Reply 15:
It is already a failure...If you were smart you would have re-sold the BE's on Ebay, because they are not likely to mine with <truncated> is something that is above and beyond your current expenses for a given endeavor.If I spend $1000USD on setting up a business then find $10USD it is not profitability...It is an offset against costs.Your costings are WAY off and do not give a true depiction of the <truncated> costs)This is why so many businesses fail in the first year....Second point...The hub is working 100% correctly, the USB standard CLEARLY defines that 500MA is the maximum current a device can draw.The fact that this USB miner draws more, is a testament to the poor design in using the USB port beyond its spec.

### Reply 16:
The rig is operating at 85% of what I estimated. With proper cooling this will increase, further improving the accuracy of my prediction. You are technically correct on this one point of business. I will rephrase my statement: revenue is 60 mBTC per dayThe Raspberry Pi model B draws 700mA @ 5V. This is 3.5W of power. The 5 USB Eruptors each draw 500mA @ 5V. This is 12.5W of power. The USB fan will draw another 2.5W. This is 18.5W in total. This is slightly more than a modern light globe. My costings are accurate.The cheapo ebay hub can draw 500mA for all seven USB ports. This is enough current to power one Block Eruptor, which does conform to the USB standard. The D-Link hub I am using can deliver 3A, enough to power six Block Eruptors.

### Reply 17:
Congrats.....Now all the info is clearly explained.... and nicely done too.

### Reply 18:
Big problem this morning: cgminer reported all 5 Block Eruptors hashing at 250MH/s, amd all five BEs had their green LED illuminated. This could be a heat issue; I'm not sure. I've unplugged everything for now to let it cool.

### Reply 19:
Just for fun and giggles, do you have a kill-a-watt running for all those badboys? and if not, get one

### Reply 20:
Very cool ! I didn't go with the block erupters (a lot of them), because the ROI on them is not good.I just bought one for the hell of<rest of thread truncated>
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    ""hardware_name"": ""DLINK DUB-H7"",
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    ""hardware_name"": ""Block Eruptors"",
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    ""hardware_name"": ""Raspberry Pi model B"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""cheapo ebay hub"",
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  }
]"
13875,"Date: 2011-03
Topic: OpenCL with intel cpu possible ?
### Original post:
I've recently discovered this SDK for OpenCL with intel plateforms (windows only for now...) :- <link> requires SSE 4.1, so, only cpu is used for now (yes, opencl is designed to be used by both cpu and gpu).FAQ extract : ""Will the Intel OpenCL SDK support Intel integrated graphics (processor graphics), and when?Intel will support OpenCL on future tools and platforms.Intel is evaluating when and where OpenCL support will intercept our products, including processor graphics, but no announcement has been made.""Any volonteer to add this in existing miners, if possible ?Will it improve speed compared to the SSE2 asm version ?

### Reply 1:
You'll only get about 2khash/sec on a Core 2 Duo 45nm. The best cpu miner is still ufasoft's.

### Reply 2:
I'm waiting for the linux adaptation :p

### Reply 3:
Shouldn't it run under Wine? I don't have any Linux machines right now, but the only thing that program does is crunch numbers and send results. Wine even runs full Directx10 games, can you test it?

### Reply 4:
Already tested :I've not investigated further, because there's no error reported by wine nor by bitcoin-miner (even if i put a wrong login/pass).EDIT : If it helps someone, it seems related to libpthread :

### Reply 5:
Do you have a windows installation? You can try copying the native dlls and configuring wine to use them.

### Reply 6:
would running it through wine not work out to be rather slow?

### Reply 7:
I trid with some native windows dll, but nothing better (i don't have a windows installation).I finally switched to this sse2 miner under linux, which works really fast :pps : wine is not an emulator, so, if it works, the loss of speed is not really significant.

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15121,"Date: 2014-05
Topic: Does anyone have a comparison of all the chip manufacturers and their specs?
### Original post:
It's in the title. Just trying to work out who's the most efficient.Thanks.

### Reply 1:
Here is a start: <link> are probably others.

### Reply 2:
Thanks for this. It's much appreciated!

### Reply 3:
Dogie's Comprehensive Manufacturer Trustworthiness GuideThe single most important factor when choosing an ASIC is to find a company that will actually deliver you a product. There are too many companies that will happily take your money and basically ""never"" deliver.They either literally never deliver (outright scam), or they deliver so late that by the time you get your ASIC it will only be useful as a door-stop or space heater (vapourware <truncated> and Bitmain are my favorites at the moment. The Spond SP10 and Bitmain S1 & S2 all are real products that are delivered promptly (roughly 1 week).

### Reply 4:
I use this guide .Be careful who you buy from. I buy used, so I just get an idea what hardware I want from that guide. If you buy new, check the company here.I have heard bad reviews about BFL specifically, be wary.

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    ""hardware_name"": ""Bitmain S1"",
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  },
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    ""hardware_name"": ""Bitmain S2"",
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]"
3725,"Date: 2014-09
Topic: MOVED: [Cl
### Original post:
This topic has been moved to Trashcan.<link> posts by opening poster deleted, likely scam

",[]
7601,"Date: 2014-05
Topic: U2 Antminer USB Hubs
### Original post:
Hi,I have looked through the forums and the Internet and couldn't really find a suitable USB hub that ideally won't waste too much USB ports for the U2 Antminer USB miner. While there are some USB hubs that can hold the U2's on all the ports, they usually require the U2's to have contact or have to be clocked at 1.6 Gh/s (I overclock them to 2.2 Gh/s)I am currently eyeing this one: <link> plan on putting the U2's on those swiveling USB ports and have a fan to cool them.Since it has been over a month since the release of the U2 Antminer USB miner, has anyone found a suitable USB hub (preferably, USB 2.0, for RPI) for the U2's?(Yes, I know I won't make a ROI with USB miners, it's more of a learning experience)Thanks

### Reply 1:
The 3A psu with the one you eyeing will MAYBE have enough juice to power 8 if your lucky without a fan. Just FYI

### Reply 2:
How can 3A power 8? Doesn't each USB miner require at least 0.5A to be powered? So, the max is 6, right?

### Reply 3:
Check here for some ideas: <link>

### Reply 4:
Thanks, but I have already read that post. Very helpful, however the U2 Antminer USB has a very different form factor than the first gen Asic USB miners, so is has compatibility issues with most USB hubs.

### Reply 5:
Bump(Anyone that can help me? )

### Reply 6:
Well, i have one of these on order:<link> let you know how it goes.

### Reply 7:
Go look at the thread about usb hubs for Asicminer USBs, the same qualities apply for Antminer U1/U2

### Reply 8:
the best low cost hub is this<link> the brick is not good enough. there are brick /power solutions<link> this runs 3 of those hubs2 of them runs six of those hubs that is 60 sticks. attach to this psu <link> 1 pcie cord to for the set of wires you can run 60 sticks add a few of these<link> no longer run the usb sticks but I do run 29-30 gridseeds five chip units this way. the plat psu saves huge watts.. try 292 watts for a pc and the 30 units. the pc is an asrock motherboard z77 itx-e a 240 gb crucial msata 2 samsung ramsticks a blue ray player and an iz 3770t cpu.so all that and 29-30 gridseeds under 300 watts. when I kept it pc only and bricks the watts were 353 vs 292.. so bricks suck for power.

### Reply 9:
I have 10 on two Rosewill 10 port RHB-500 and arctic breeze fans. Overclocked since day 1 24/7 for weeks. No issues. May not be the best fit, but rock solid once you disable pwr management on the USB ports. If you don't they will drop.

### Reply 10:
I have taken a cheep chinese 10places hub and then a cheep flea market ATX power supply cut the cable for 5v made the modifitacion to make it start and now all run excellent with plenty of power.This involves little minimal experience but its cheep and most powefull than any sold for 10 times more

### Reply 11:
getting the atx power supply really can boost the efficiency a lot. power brick are under 80% more like 70% efficient . a decent platinum is more then 90 %With my setup 353 watts bricks vs 292 watts platinum psu. In the summer I pay 18 cents a k-watt that is about 26 cents a day or 7.80 usd a month and I got rid of all those bricks.

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    ""hardware_name"": ""plat psu"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""asrock motherboard z77 itx-e"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""240 gb crucial msata"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""samsung ramsticks"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blue ray player"",
    ""hardware_is_owned"": true
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4241,"Date: 2012-12
Topic: bASIC's supposed renders are stolen from another site
### Original post:
Look at these renders posted by cablepair on <link> on 10 December 2012Now look at these render posted and uploaded to Bitcoinmalaysia in September 2012<link>

### Reply 1:
*scrambles to find some popcorn*

### Reply 2:
Bwahaha wtf?

### Reply 3:
Could this somehow be the firm that's supposedly designing the boards? Tom's just reselling them?

### Reply 4:
Or Tom's in over his head and needed SOMETHING to give to people to make them feel better?

### Reply 5:
That page is reselling BFL and Tom's boards and has taken pics from their respective sites. There's a crudely photshopped BFL Jally there as well. End of thread.

### Reply 6:
In all likelihood, the site updated its post (originally posted 9/23/12) with the images, now that they are out. Unfortunately, the internet archive hasn't archived that page at all, so it cannot be confirmed that way.EDIT: Google cache confirms that the images were not in place as of Dec 2, 2012.<link>

### Reply 7:
Wordpress shows when an image was uploaded in the image URL.<link> shows September for all three of them.

### Reply 8:
I believe that's just showing the date of the posting in which the images were uploaded to.See my edit above.Believe me, I'm no bASIC fan, but I don't believe they just pulled photos off of a random website like this, and google's cache seems to confirm that.

### Reply 9:
I don't see a 'shopped Jally anywhere. Their pre-order calls it a V4, and their newest update is Nov 30th, before Tom posted those renderings.

### Reply 10:
<link>

### Reply 11:
Yeah - this is what it is.. tards.. herp a derp

### Reply 12:
That page is old news and the rendering weren't on it when it was found and denounced as an obvious scam on bitcointalk months ago. And by the way, the text isn't even consistent with the renderings. The size is still 4"" x 9"" although the boards are nearly squares.

### Reply 13:
Oh well. Carry on then.Wordpress should definitely change this about image uploads.

","[
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]"
8067,"Date: 2014-07
Topic: Altcoins with BTC Mining HW
### Original post:
Hi,What Altcoins could I mine with my Bitmine.ch Coincraft HW?What would you mine with it and why?Cheers!

### Reply 1:
Any that use SHA256

","[
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23649,"Date: 2021-08
Topic: Is my S17+ PSU toast?
### Original post:
I have an S17+ that will power up and all fans work on both the PSU and the miner. It will get me to the antminer interface. No hash boards show up at all. When I measure the voltage at the buss bars that connect to the PSU and the hash boards, I get no voltage. I tried another controller and get the same thing, no voltage between the two big buss bars. Shouldn't I be getting 14-21V at those bars?

### Reply 1:
What do you mean about buss bar? Are you talking about VBUS or VCC? Or it's a cable from PSU? If there is no voltage when checking it from Multimeter it means you have a defective PSU. Much better if you can post the whole kernel logs here you can find it on WebGUI. Don't forget to use the # button and paste the kernel logs inside the code before you post it here or you can use pastebin.com and paste the link here.

### Reply 2:
yeah the kernel log will say voltage not met. Which is very likely a dead psu.

### Reply 3:
Not really, if there is no load-demand the PSU will only be outputting 12V to supply the control board which powers the fans, but that doesn't mean your PSU is good, it's likely dead if all 3 hash boards stopped showing, maybe post some screenshots and the kernel log as they usually give enough information to diagnose the miner's issues.

### Reply 4:
Sorry for the late reply guys. I ended up figuring out the problem. PSU was good. I been mining with FPGA's so the BTC miners are a bit new to me. Ended up being a firmware problem. Thanks for the replies.

","[
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": true
  }
]"
15341,"Date: 2014-09
Topic: Rent out your old FPGA miners!
### Original post:
I've got a cryptography project shaping up that could benefit from renting lots of idle FPGA miners. Specifically Spartan-6 LX150 chips (*). If you have a lot of these, and can put them online, please contact me through the email link in my profile (do not send forum PMs). Let me know how many chips worth you have.Just to be clear, we're not interested in actually taking physical delivery of the miners or chips. You'd give me a login on some junky linux box that has JTAG or similar access to the boards, I'd pay you weekly in BTC. You pay the electric bill, but obviously we're offering more than enough to offset that. You're free to bail out at any time.There are still a few things that need to happen for the project to go forward, one of which is finding enough compute power. So if you don't have a fairly large installation that's ok, let me know anyways, but I'll probably put you on the wait-list for after we get the first few big contributors going.Thanks,(*) It *might* make sense to add support for other FPGAs, but only if you have a truly gigantic quantity of them (like 1,000+). If you think this might be you, let me know what you've got.

","[
  {
    ""hardware_name"": ""FPGA miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Spartan-6 LX150 chips"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""junky linux box"",
    ""hardware_is_owned"": true
  }
]"
22892,"Date: 2019-03
Topic: Antminer C1 melted power cables after settings change, re-powering
### Original post:
I have been using an Antminer C1 to keep a fishtank from freezing. I had it underclocked due to a mild winter, but during a recent cold snap it wasn't keeping up so I restored it to what I thought were defaults (possibly 225M/0700 or 250M/0725 depending on whether the one screenshot I took was before or after).I made the change through the web interface but realized I had something on the stove so I neglected to power cycle the hardware itself until maybe 5 minutes later. But when I got there the power cabling (which was four 6-pin plugs harnessed off a single 8-pin ""GPU"" plug on the power supply) had melted, and the GPU plug on the PSU was carbonizing.So now I'm wondering:1. Did my failure to power cycle the unit immediately after changing the frequency+voltage cause this? I have run this miner for years at both normal and underclocked settings and never noticed the cabling anywhere close to this hot before.2. Will powering the unit with four PCI-E male-male cables be a bit better than through the other/remaining GPU plug on the PSU? I understand 8 cables is ideal, but my supply only has six 6-pin sockets and one remaining 8-pin socket (I desoldered and cleaned up the remains of t<rest of post truncated>

","[
  {
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  },
  {
    ""hardware_name"": ""power cabling"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU plug on the PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCI-E male-male cables"",
    ""hardware_is_owned"": false
  }
]"
21188,"Date: 2016-12
Topic: HELP! Antminer s7 problem
### Original post:
Hi, hope someone can help me. Yesterday one of my S7 suddenly stopped hashing and started beeping. When I restarted it one of the has boards instead of showing oooooo just showed ---------, what the miner would do is that it started hashing for a couple of minutes and then stopped. They miners are in a controlled environment with several other miners with constante temperature of 55 C.Also tried with all 3 hashing boards connected change the frequency to 250 and same thing happened.I tried to test connecting just one board to see which one was not working, with just one board connected it starts hashing normally for a few seconds, then the miner restarts as usual and when it comes back up the temp on the hash board is 95 so it stops hashing. I tried with the second board, only that board connected and same thing happened. Tried with different terminales and cables on the PSU.Haven't tried with the last board since I don't want to damage them. Could it be the PSU? Any advise would be greatly appreciated. Thanks

### Reply 1:
And you verified that both fans are spinning proper speed?

### Reply 2:
Yes, they are

### Reply 3:
One thing could be the fan power connectors could be in the long plug positions.Make sure the front Fan is in FAN1 and the rear fan is in FAN3 positionPICTURE HEREIf the fan connectors are in the correct position, please make sure the both fan(front & back) are functioning. Sometimes if one fan works, the other fan may spin due to the air pressure but may not be functioning. If the fans are working correct, then your hash PCB needs repair. If it hash at the initial power on, you may want to get it fix while it is still fixable.If you are in USA you can ship it to Colorado, or you can send it to Hong Kong for repair.

### Reply 4:
If i'm not mistaken, one of your fan is not working. Get a new fan if it's not working. Should be fine once change.

### Reply 5:
Thanks all for your replies. So I haven't been able to figure out exactly what the problem is.I ordered 2 new fans that should be getting tomorrow just to rule out a fan problem. will update if that makes it work.

### Reply 6:
Ok, so the new fans arrived today. I installed them and miner is working properly. The only problem now is that it is not detecting one of the hashing boards. any ideas?

### Reply 7:
Turn it off and then make sure all of your cables are connected correctly and securely. Then power it on and see what it does. If, during your previous testing, you powered a hashboard without powering the controller you may have damaged it, it is also possible it was damaged by heat since it appears that you have established that you had a fan problem.

### Reply 8:
1 of your board might be dead due to you didn't realize your fan is dead. Send it to repair.

### Reply 9:
It's not worth the repair and 2 x postage costs.

### Reply 10:
Repair service available for Antminer s7 and s9 board! At affordable rate!PM me for more details!

### Reply 11:
Looks like I am having the same problem with my antminer s7 . One of the fans is not working. Anyone have a link for a good replacement fan?

### Reply 12:
Www.eyeboot.com sell replacement fans. I've just bought two from them for my S9 (to try and get the noise down with matched fans rather than two different ones it came with) and they work great. Not bad on price either. They come from china but delivery was only a few days after an initial communication error.

### Reply 13:
I thought you were not suppose to do this. From what I have read, the input fan needs to be slower than the output fan due to back pressure. If sound is more important than cooling then having equal fans could reduce noise.

### Reply 14:
Well ive not noticed any problems so far. Ambient temp is 20c, PCB 49-51c, CHIP 80-81c. Been running like this for 3 days now without any issues.

### Reply 15:
hey, where did you find that input fan is slower? all i see on the specs for B22 and B23 is that front fan is 6000rpm and back one is 4300rpmthanks

### Reply 16:
I would try upgrading to the latest firmware version. If that doesn't fix it, then consider sending it to Bitmain or Bitmain Warranty if you are in the U.S.

","[
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    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fans"",
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  },
  {
    ""hardware_name"": ""hash PCB"",
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  },
  {
    ""hardware_name"": ""Antminer s9 board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""replacement fan"",
    ""hardware_is_owned"": true
  }
]"
7872,"Date: 2014-06
Topic: anyone have some spare molex/sata power cables for an Enermax PSU?
### Original post:
Since I swapped mine out of my S2 with a 1300W, I thought I'd use it somewhere else. But it only has PCIx adapters on it, and none of my other PSUs have adapters that fit the Enermax. Someone have a spare molex and SATA power cable that works that they'd be willing to send me? Thanks.M

### Reply 1:
<link> asking them tell them your story they may be helpful.this is specific info on your cables needed<link>

### Reply 2:
Thanks for the links. I contacted them, and they directed me to Amazon links to get cables. They don't combine shipping on cables, so to get two SATA and two molex cables, you spend $24 on shipping. A bit ridiculous to say the least. They haven't given me any other options.Anyone else out there have any bright ideas on how to get some workable SATA and molex cables for these enermax 1000 watt PSUs at a reasonable price?M

### Reply 3:
Be careful using modular cables from different power supplies!I just used a molex cable from a Thermaltake 750 on an EVGA 1300 and it blew up 2 Hex16B miners, the surge protected USB hub, and the TP-Link I was using as the miner! The PSU didn't even power down into safety mode! Modular cables are not standardized, even if they fit in the same hole, the pins are probably wired up differently, so beware!EU/CE need to sort this shit out! (to pass CE your product is not supposed to interfere with other products!)

","[
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  },
  {
    ""hardware_name"": ""PCIx adapters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""molex and SATA power cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SATA cables"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""molex cables"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Thermaltake 750"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""EVGA 1300"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Hex16B miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""surge protected USB hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""TP-Link"",
    ""hardware_is_owned"": true
  }
]"
13837,"Date: 2023-06
Topic: Cryptominer Warranty Checker
### Original post:
Hi folks, I created a simple application that checks warranty expiration dates on multiple Antminer, Whatsminer, Canaan, and Alpha Miner serial numbers. Provide a list of SN's in excel format, and the program will create a new excel file showing the warranty expiration data for each serial number.You can check it out by going here: <link>

","[
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    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Alpha Miner"",
    ""hardware_is_owned"": false
  }
]"
22428,"Date: 2018-03
Topic: Ethernet Port has no lights, no IP
### Original post:
So, I've set up many Antminer S9's and curious if I have maybe a couple bad apples? 2 of my miners that arrived power up just fine, have all green lights, but the Ethernet slot does not light up and I cannot acquire an IP. I've done the troubleshooting 101, reset the miner to default, ensured the network cord works, and the port from my switch is confirmed working. There is very limited information pertaining to this problem and curious if anyone has experienced this as well, and possibly found a resolution? Thanks in advance.

### Reply 1:
This really sounds like a cable issue - either that or the ethernet port on the miner is dead. I would try a new ethernet cable - use a new one or one that is working on another miner.

### Reply 2:
If that doesn't work, I'd swap the controller with a known working controller.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ethernet slot"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network cord"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""port from my switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ethernet cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": false
  }
]"
21672,"Date: 2017-10
Topic: Is it really ok to have antminer S9 operating at over 80 degrees celcius?
### Original post:
Is that really ok?Do u have antminers S9 running for over a year under 90 degrees?My D3 running up to 72 degrees celcius and my S9 up to 81 degrees. Wat temperature do u run your machines at? Bitmain manual says it will stop at 125 to 135 degrees celcius but that is really high...

### Reply 1:
In the summer my S9s run over 100c at the chip level. The thermal cutoff is 115c, thats when they stop mining. 80 degrees on a chip is relatively cold, dont worry about it.

### Reply 2:
So your saying s9s can run at 100C? Wow thats crazy. Also 80C is relatively cool?I never ran anything around 100C, maybe a few of my gpus might hit 80C once in a blue moon though. Those temperature seems pretty high, and you havent damaged anything so far? I always thought anything around the 80C temp would be worrisome

### Reply 3:
I see. How long have your antminers been running?Thats wat i think as well but there is alot of info that under 90 degrees for antminer is good. I find it weird too but those info do come from some good posters like notfuzzy.I suppose these chips can handle that much heat but somehow I dont feel that comfy with it lol.

### Reply 4:
The first of the s9s I have on site have been running since January.With 60f intake temps pretty much all of my machines are in the 70-80c range. IMO 70-80c is ice cold for these machines. I ran these things all summer over 100c with no issues. These kinds of chip temps are the new norm for 14/16nm tech. For example my water cooled GTX 1080 still hits 70c at full load.

### Reply 5:
I see. 70-80 is good man. Hmmm but i get above 80c all the time for one chip though. The temperature is always the same where I live.60F intake temps, that about 16 degrees celcius in your room. Do u get condensation issues in the room or machine or on top of the portable air con?My room temperature hovers between 31-34 degrees celcius and I can put air-con but it does not help much since the air gets sucked out quickly by my strong ventilation fan.The room is a small 5 square meters room.I am getting S9 TempAt this temp, there will be some HW errors on the above 80 degrees chip. The other 2 chips will have no errors.This is basis 13.5TH devices. I have 14TH S9 devices coming later...and it might get hotter. Sigh, I wish it was 13.5 TH devices instead of 14TH.At this temp, the above 83 degrees D3 TempL3 TempI am considering making a partially covered box around the antminer S9 and duct some air-con in. The box will still allow air intake from outside air but I got a bad feeling it might cause condensation as the humidity is quite high here at around 65-80%. Even if I add in cold air that has been dehumidified, I worry that it might cool the intake air that has higher humidity.Anyon<rest of post truncated>

### Reply 6:
Dude 70-80 is more then okay you don't need ac.you are better off without ac if you stay under 95.once you go over 95 you need to consider trying to keep it cooler.my oldest s-9's are in service since June of 2016 they run as high as 101 in the simmer and around 88 in cooler weather.keeping them dust free is more important then keeping them under 80cand hw of 0 or 10 is meaninglessyou hw pct is more important if it is under 0.0050 you are fine.basically you are ocd about your numbers because you can't believe coins are over 6100 usd and that you are whaling!!!Just relax and enjoy this bro. or sis since I don't know who you really are.

### Reply 7:
I see. So, dust free is more important. My HW is now about 481 but only about 0.0003%. I guess it doesnt matter. I guess I should worry more on overheat protection. One of my S9 chips is up to 83 though.I dont get why I have 2 similar S9 miners and they give different temp numbers.I am a bro Thanks for the info man.

","[
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  {
    ""hardware_name"": ""D3"",
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  {
    ""hardware_name"": ""GPUs"",
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    ""hardware_name"": ""Portable air conditioner"",
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  {
    ""hardware_name"": ""Antminer D3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer L3"",
    ""hardware_is_owned"": false
  }
]"
19028,"Date: 2014-03
Topic: Help with avalon asic 230gh/s 0.5 BTC REWARD
### Original post:
It stoped mining and the green light turned red , it was mining perfect till now. Please help me .It says that it is connected to the pool but the speed that appears is 0.0mh/s

### Reply 1:
HelloI am sure I can help you but I need you to post a full screen shot of your CGminer API Log. I own and maintain five of these Chinese BTmine Avalon Clones.You can send the 0.5 btc to <truncated> and i will assist you to a full and complete solution, even it takes days.MtnminerDennis Kerley

### Reply 2:
power supply or internet connection

### Reply 3:
If he can provide the CGminer API Log it will be easy to narrow down. The Btmine rigs have been a nightmare, the build quality is extremely poor. Of the five I own, I have already rebuilt 4 and working on the 5th one.Mtnminer

### Reply 4:
ok , i will poste it tomorrow , i have the machines in a subterrain , thank you mtnminer, once the machines are back working i will send 0.5 btc. The internet connection is working fine.One of the machines doesnt let me enter to the console, it doesnt let me change the ip of the machine, troubleshooter appears when i want to change it.

### Reply 5:
On the computer you are trying to connect to the miner from in the ip range 192.168.1.** or 192.168.0.**What is the ip address marked on the case?Are you seeing an error message involving ""LuCi"" or similar.I will check back regularly as we work to solve this and I am fins with the .5 bitcoin reward after we get you mining, it take a running miner to make money.Mtnminer

### Reply 6:
I'm running a 230 GH/s Avalon box and had a similar issue.Unplugged it from the wall for five (5) minutes,Changed the pool away from BTCguild and it took off like a jet turbine.Of course your mileage may vary. Could have just been an amazing coincidence.

### Reply 7:
Glad to hear you resolved your issues, I mine on BTC Guild with my five avalon clones and all my other miners. No problems, but it may be worth trying another pool.Mtnminer

### Reply 8:
The api log :[Firmware Version] => 20131110cgminer: <truncated> 0e12b1bluci: 346e3e7Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Chip=55,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=2128 <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=3.00000000,Min Diff=3.00000000,Max Diff=3.00000000,Min Diff Count=599,Max Diff Count=599,Times Sent=4,Bytes Sent=315,Times Recv=8,Bytes Recv=2952,Net Bytes Sent=1060,Net Bytes Recv=2952|'[STATUS] =>( [STATUS] => S [When] => 1391458436 Code: => 70 [Msg] => CGMiner stats [Description] => cgminer 3.4.3)[STATS0] =>( [STATS] => 0 [ID] => AVA0 [Elapsed] => 11 [Calls] => 0 [Wait] => 0.000000 [Max] => 0.000000 [Min] => 99999999.000000 [baud] => 115200 [miner_count] => 16 [asic_count] => 10 [timeout] => 9 [frequency] => 1300 [fan1] => 0 [fan2] => 0 [fan3] => 0 [temp1] => 0 [temp2] => 0 [temp3] => 0 [temp_max] => 0 [Device Hardware%] => 0.0000 [no_matching_work] => 0 [match_work_count1] => 0 [match_work_count2] => 0 [match_work_count3] => 0 [match_work_count4] => 0 [match_work_count5<rest of post truncated>

### Reply 9:
i updated the firmware , it isnt working.cgminer api: [Firmware Version] => 20131229cgminer: <truncated> 54d7569luci: 346e3e7Reply was <truncated> <truncated> <truncated> <truncated> Version=0,Avalon Chip=55,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=1623 <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work Diff=8.00000000,Min Diff=8.00000000,Max Diff=8.00000000,Min Diff Count=947,Max Diff Count=947,Times Sent=2,Bytes Sent=150,Times Recv=4,Bytes Recv=891,Net Bytes Sent=150,Net Bytes Recv=891|'[STATUS] =>( [STATUS] => S [When] => 1391466158 Code: => 70 [Msg] => CGMiner stats [Description] => cgminer 3.9.0)[STATS0] =>( [STATS] => 0 [ID] => AVA0 [Elapsed] => 25 [Calls] => 0 [Wait] => 0.000000 [Max] => 0.000000 [Min] => 99999999.000000 [baud] => 115200 [miner_count] => 16 [asic_count] => 10 [timeout] => 9 [frequency] => 1300 [fan1] => 0 [fan2] => 0 [fan3] => 0 [temp1] => 0 [temp2] => 0 [temp3] => 0 [temp_max] => 0 [Device Hardware%] => 0.0000 [no_matching_work] => 0 [match_work_count1] => 0 [match_work_count2] => 0 [match_work_count3] => 0 <rest of post truncated>

### Reply 10:
You firmware and CGminer are out of date, Cgminer is not ever trying to connect to your pool. To start flashing and updating your firmware will help with a lot of potential issues.Here is the upgrade firmware link<link> it to an easy to find location, ex.. your desktopLog into your miner, go to the systems tab, backup / flash firmware.go down to flash new firmware imagebe sure keep setting is checkedbrowse to the file on your desktopselectClick fla<rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon ASIC 230GH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Chinese BTmine Avalon Clones"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Btmine rigs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGminer API Log"",
    ""hardware_is_owned"": false
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]"
22940,"Date: 2019-05
Topic: Allow API commands without ssh access
### Original post:
Your miner is in API restricted mode by default that is why you are getting this error message ""Msg"":""Access denied to 'privileged' command"",In order to change the restricted mode to Privileged API access, you must access the SSH root but the big problem about your miner you are using the latest version of s9 firmware(2019) If you are using this firmware your miner doesn't have SSH access because it's disabled, unlike lower version.

### Reply 1:
Hello!I have Antminer S9 with latest firmware from 04.03.2019 (Hardware Version30.2.1.3). There is no access by ssh, opened just 3 ports (80, 4028, 6060) on the Antminer's side. I can ask miner with simple command like this:Code:echo <truncated> | nc 192.168.X.X 4028with <truncated> <truncated> <truncated> Mar 4 11:37:08 CST <truncated> S9""}],""id"":1}But when i try to send command likeCode:echo <truncated> | nc 192.168.X.X 4028i have access <truncated> denied to 'privileged' <truncated> 1.0.0""}],""id"":1}And i dont understand how i can update my access level without ssh?Another question is how is possible to use API and send commands/manage parameters of Antminer in C++ code remotely from local net? May be some libraries for that?

### Reply 2:
So there are no ways of creating software of managing Antminer's hardware with latest version of firmware? Only after downgrade?

### Reply 3:
Thanx! It works, i did the downgrade of OS till 2017 version, now with ssh access.

### Reply 4:
You can try to use awesomeminer they are adding some feature for s9 miner to remotely reboot through web without SSH access.Or you can flash the miner with t9+ firmware through program recovery(SD card Flashing) you can find the procedure from here Click meThen after you successfully flash it with t9+ flash it again with s9 firmware(Make to use lower version, not the 2019 firmware) through WebGUI.So that you can have access to SSH.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9 firmware(2019)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t9+ firmware"",
    ""hardware_is_owned"": false
  }
]"
22556,"Date: 2018-04
Topic: Temperature problems after updating-Antminer S9 13 TH
### Original post:
Hello everyone, yesterday update my antminer with the firmware <truncated> and I see that now the fan only reaches 5,400 revolutions and makes the chips are a almost 100 ... when before they were at 75 or 80.If I get it to know I do not update anything, it rages!Does anyone know how I can fix it? I have a backup of my previous configuration but I think it is useless to use it again, or should I?Sorry for my English but I'm using the Google translator.Thank you very much everyone for the help!

### Reply 1:
Well, I think after you update your firmware to other firmware it might be the reason of the temperature increased.The only thing that I think it could help you to decrease the temp is to increase the fan speed,I bookmarked a solution and I hope that you can try it first and increase the fan speed check this <link> this could not work you must try the other firmware I suggest that you download this <truncated> could reduce your frequency settings and reduce the miner temperature.

### Reply 2:
You need to match your firmware with your device.Static speed 600m firmware is for the 12.93th S9 from a year and a half ago. How old is yours? Should you be using auto frequency instead?

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15313,"Date: 2014-08
Topic: Feeding the antminer S3 with 3 pci-e cables?
### Original post:
The PSU seems to shut down when feeding it with just 2. It might be because the cables are made for just 75W and it pulls 180W through each (so it drains 360W in total).So, I'm thinking can I plug a 3rd pci-e cable, without overclocking it just to spread the power a bit more, or it doesn't work like this?

### Reply 1:
At stock speeds the S3 pulls 340W from the wall, meaning it will pull less from the PSU itself depending on efficiency. What PSU are you using that keeps shutting down? I don't know that I'd trust it . How many rails does it have? Can it supply enough juice (watts/amps) to the PCI-e?Bitmain has recommended connecting 4 if you're over clocking, or 2 if running stock. There's nothing that says connecting 2 on 1 blade and 1 on the other will work. Even if it did work as you hope, then you'd have 170W draw on 1 cable and 85W draw each on the other 2 (assuming the 340W power requirement).

### Reply 2:
If the PSU is shutting down, either it is overloaded, or one rail of a multi-rail PSU is overloaded, or your AC outlet is not supplying enough power for the PSU. &nbsp;If the cables are overloaded, it will cause them to get hot, but that alone should not cause the PSU to shut down until the insulation melts, and the cables short out. &nbsp;If plugging in a third cable helps you, then maybe the first two cables are on one rail and the last cable is on the other? &nbsp;Try to make sure each blade of the S3 is on a separate rail if you can.All that being said, it will not hurt anything, and can only help to plug in PCIe cables to the extra slots on the S3, whether you are over clocking or not.

### Reply 3:
If you have extra pci-e cable you should just plug in all 4. Having 90W on each pci-e is always better then 180W.

### Reply 4:
it's a single rail 630W thermal take one and it gives 588W to the PCI-e connectorsso should be more than enough, that's why I thought it's the cables, but what you say about them first getting hot makes sense.Can there be some protection built in that does that?the AC outlet should have plenty to supply them I believe, there is nothing else on it.So, what else it might be?

### Reply 5:
That should be plenty of power for a single S3. It is possible the PSU protection unit is bad, or something else about the PSU has failed.

### Reply 6:
I would agree with the earlier posts on a possible power supply issue. I'd also look at what your power supply is plugged into. I recently had an APC PDU acting up and once I replaced it, my S3's became stable.

### Reply 7:
I tried with another 800W single rail PSU and it did the same first time, but working for few hours fine now.However if it does it again, I guess I'll just try with 4 pci-e cables plugged.So, we know for sure that plugging 4 cables splits the load evenly between them all?

### Reply 8:
Not sure if this will help. I'm using a gold rated single rail 1000w PSU for two S3's. If i plug the PCI-E's into a miner the fans blow but it doesn't boot. I have to use 3 PCI-E in each miner. Not sure if this is just the modular PCI-E cable. Didn't really bother checking.

### Reply 9:
First, drawing 180W through a 6pin is dangerous and I wouldn't recommend it to anyone.You might be activating some sort of protection on the PSU (they are very safe and programmed to shut down immediately when things get too hot or overloaded), so the best test would be just to plug in the 3 PCI-e cables and see how things go.Good luck!

### Reply 10:
The 6-pin is differentiated from the 8-pin by only 2 ground wires. If the PSU is single rail and uses quality cabling it shouldn't be an issue, especially if you use 3 or 4 cables.

### Reply 11:
I added Startech PCIe splitters to each PCIe cord. It works fine on EVGA1300 and cords are not even hot when at 237.5mhz. Naturally, both ends shall go to power the SAME board.

### Reply 12:
This may be pointing out the obvious, and at the risk of insulting your intelligence, you did plug a cable into each board, and not two on the same one, right?In other words, you plugged in like the green ovals, and NOT like the red rectangles:

### Reply 13:
yes, for sure

### Reply 14:
Crypto, to be honest TT units aren't the best so 150+W per rail may be much for em; I run Seasonics and they couldn't care less, 150W per wire is just fine, but id be weary of doing that on lesser quality unitsif you do have the 4 wires, why not plug em all in ? if you don't have 4 wires, use adapters from molex to make 4 wires

### Reply 15:
OK, good . Now that we've cleared up you're plugging things in properly, I fall back to my original post here: I wouldn't trust the PSU. If you're plugging in only 2 PCI-e cables and it trips the PSU, something's off. It looks like you tried another PSU that exhibited the same behavior at first, but has since run properly? What kind of PSUs are you using? I've got EVGA 1300 G2, Corsair HX1050 and a Corsair CX600M that I use<rest of thread truncated>
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22698,"Date: 2018-07
Topic: Antminer S9 - Stops hashing after booting up - Pretty sure it's a fan issue.
### Original post:
Your image link is not working.Check the wiring on the fan, compare it to the wiring of the other - are they the same? I wonder if one of them has the counter wire and the positive/negative wire reversed.I assume you are sure you are connecting the fan properly and not across two different fan connectors... I was hoping to look at this in your pic.[EDIT] Image is working now...Any chance getting an up close pic of the fan connections on the miner?

### Reply 1:
Ameador1,Thanks for the quick reply. Yes, the fans are definitely connected correctly. The miner has been running fine for months, it randomly stopped working late last night. I only swapped the connectors today to troubleshoot.

### Reply 2:
I would think if it were the controller, then it would not report the working fan properly when you swap them around.Have you tried another fan in the mix? Replace one of the miner's fans and check your readings. If you have two good readings, then good, and you know which fan is the issue. If not, try putting the first fan back, then swap the other miner's fan and see what you get.I'm inclined to blame a fan with a failure - maybe shorting with the counter wire somehow?

### Reply 3:
It looks like the fan detector is damaged. Did you try to reset them first to factory default?Try this guide to manually setup the fan speed of your miner <link> setting them up to higher speed then monitor the fan speed and temp status again. If you have extra or defective miner then try to use it to replace one of the fan of your miner then check the fan speed again until you found which fan is damaged.

### Reply 4:
In the OP, the readings on the good fan are read properly on both fan connectors when the fans were swapped. I would think this is a bad fan indication (at least the counter/ticker part of it), not fan detector on the controller. Right?

### Reply 5:
Did you go through Bitmain? Keep in mind that their warranty stickers are on the screws holding the fans in place - swapping it without their go-ahead could cause you warranty issues later. Just a consideration. Hope that's the solution for you.Have you tried setting the fan manually - in the Miner Configuration Tab? You may get a false speed reading, but maybe you can force it to run at 80% to 100% (depending on your ambient temps) to get the temperature in line to run it until you can swap the fan.BitMaxz posted a link to how to do it earlier.

### Reply 6:
I bought these back in January, so I believe they are no longer under warranty. (I think the warranty period is 180 days)

### Reply 7:
My S9 stops hashing a few minutes after booting up. I think I've narrowed it down to a fan issue. When working normally, both fan speeds are around 4000-6000 rpm.This is what I'm currently experiencing:- High temps on all 3 chips. 128/115/128- Both fans are receiving power and spinning, so they're not completely dead.- Before the miner stops hashing, the fan speeds are showing as follows:Code:Fan# Fan1 Fan2 Fan3 Fan4 Fan5 Fan6 Fan7 Fan8Speed (r/min) 0 0 4,440 0 840 840 0 0- I swapped the two fan connectors on the board, and the numbers are reversed, which leads me to believe one fan is <truncated> Fan1 Fan2 Fan3 Fan4 Fan5 Fan6 Fan7 Fan8Speed (r/min) 0 0 840 840 0 4,440 0- Why are there 3 fan speeds showing? Could that mean it's a problem with the control board?Please see attached screenshot.<link> help would be appreciated.Thanks!

### Reply 8:
Yes, that's what I'm thinking as well. I just ordered a new fan. I will post an update once it been replaced, in case anyone else runs into a similar issue.

### Reply 9:
This is not true, the warranty stickers cover the screws holding the hashboards in place. You can remove/replace both fans without touching the warranty stickers. You can see it pretty clearly here - <link> warranty period is 180 days from the shipping date. If you bought them in January, there is a chance that they shipped out on Jan 26 or later. You can check your warranty status with your miner's serial number at <link>

### Reply 10:
My oppologies - that is correct tim-bc, it's the screws on the plate behind the fan, not the fan screws. I was thinking incorrectly.

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24074,"Date: 2023-01
Topic: ***cgminer - Bitmain Antminer U2 & Raspberry Pi Model 3 B+ - solo mining setup**
### Original post:
*using Raspberry Pi Model 3 B+*using Bitmain Antminer U2*using Raspberry Pi OS Lite (64 bit)*using <truncated> cgminer*Download cgminer:wget <link> cgminersudo dpkg -i <truncated> *If some dependencies are missing:sudo apt-get -f install*Start cgminer:sudo cgminer -o <truncated> -u BITCOIN_ADDRESS -p x

### Reply 1:
This apply to for Raspberry Pi Model 3 A+ too.

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    ""hardware_name"": ""Bitmain Antminer U2"",
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    ""hardware_name"": ""Raspberry Pi Model 3 A+"",
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11812,"Date: 2012-02
Topic: Remote GPU monitor with fan control
### Original post:
Hey everyone, a friend of mine who isn't very active in the forums made a handy piece of software for remotely monitoring gpu temperatures and controlling fan speeds through a web browser. He can only post in the noobie section so I figured I'd post here for those of you who filter out the noob section (like me ) I helped him test it and it works quite well. I quoted him below along with a link to the original post.<link>

### Reply 1:
Thanks for exposing this here. I'm finally free of the newb jail. Just thought I'd give this a bump. I also think that the post more accurately belongs in the Project Development forums, but that's just what I think. Thanks for posting this san.

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13775,"Date: 2022-06
Topic: Remote temperature alert
### Original post:
Good dayIs there a way to setup FMS to send an alert to mobile phone indicating temperature? If not is there another software we can use that has this feature?Thank you

### Reply 1:
FMS tool for Canaan gears doesn't have SMS alerts you will need a 3rd party service to be able to receive alerts through SMS or telegram notification or Email alert. Currently, only Awesomeminer that I know has this feature check this link below- <link>

### Reply 2:
Most (all?) cell providers have an email to sms gateway.All you have to do is setup the alert to go to a specific email address and it *should* appear on your phone.Here are a few lists of the known providers that do that, no idea if they are all still accurate or active.<link> keep in mind some may change over time so just because it works today it does not mean it will work tomorrow. Check it even now and then to be sure.-Dave

### Reply 3:
How about using a Remote monitoring and management software that can do much more?Take a look at our platform. <link> here is the topic:<link>

### Reply 4:
Using OverdriveNTool v0.2.9, you can adjust the frequency and voltage of the core, maximum core temperature, and fan speed.In addition, one of the most desired feature by miners is provided as well adjustment of power consumption. <link> Remote Manager is designed to support remote monitoring and management via JSON protocol over raw TCP / IP sockets. The program enables to get recent console text lines via HTTP.The main feature of Claymore Remote Manager is monitoring and management. The program monitors hashrates, GPUs temperature, fan speeds, current pool names, etc.<link>

### Reply 5:
Oil Cooling Systems can cool miners and keep the temperature around 45C. And if the temperature get higher by some accidents, it will star up the security apparatus.

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18673,"Date: 2014-02
Topic: USB ASIC Miner Block Erupter -- Newbie Questions
### Original post:
Hello,To try to learn more about the world of crypto-currencies, I decided to buy a USB ASIC Miner Block Erupter on ebay.This turned out to be a major project. I had a difficult time getting a good download and install of bfg miner. Then I almost despaired of ever getting bfgminer to recognize my block erupter which was on COM3 port. I had downloaded the driver and that part all seemed to go well. But finally it all seemed to work and the green light went off, and the block erupter started to run hot on my usb port.I selected a mining pool (totally arbitrarily), though I had no clue which was best, which turned out to be bitparking merge mining pool. I determined that the ASIC miner must be mining, because the bfgminier is showing:ICA 0: <truncated> <truncated> (the first numbers keep changing) The printout at the Bitparking Merge Mining Pool shows (after 24 hours):Hash Rate (Mhash/sec) 433.236Total Shares for round 7,680DGM Estimated Round Payout (BTC) 0.00006800I also have earned 0.02048464 devcoins (for running about 24 hours).My questions are simple. You experts, tell me, does this all look reasonable?The total shares for round, is this shares that I have earned?The estimated p<rest of post truncated>

### Reply 1:
Without doing the math, yes it sounds right.

### Reply 2:
Your USB Block Erupter is expected to mine at 330MH/s, and as you can see in bfgminier:Code:ICA 0: <truncated> it is working perfectly fine.The pool you joined use DGM (Double geometric method) payment scheme.For details: <link> and <link> the pool is doing merge mining with Namecoin, Ixcoin, Devcoin, I0coin and Groupcoin. All these coins will be mined at the same time along bitcoin, and you can sell them on some alt-coin exchange.

### Reply 3:
Thanks for the responses.I can see that this is not a way to get rich quick.But the idea was to get an education, and I think that is working out well.

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21866,"Date: 2017-11
Topic: Avalon 741 Wont mine
### Original post:
I just got an Avalon 741 set it up following the guide on 1stminingrig and my miner doesnt do anything nor do I see it in the dashboard of the avalon portal idk what Im missing, I set up the wifi correctly I set up my pool data correctly but still I get no results the miner does power up but just sits there. In the CGminer API log window it says Connection refused. Please help idk what else to try have been going at this for 4 hours now.

### Reply 1:
So it can be a few things.Have you entered your pool data to mine?If so what pool are you mining on? Maybe try a different one and make sure you are following the pool log in info in regards to password not being blank.You mentioned you had it set on Wi-Fi, is it possible to move things and use an ethernet connection to make sure it's not a network issue.What colour lights are you getting in the back if the miner?Are you actually getting logged into the cgminer interface for your rasp pi?

### Reply 2:
What color are the lights on the unit and on the AUC serial adapter?

### Reply 3:
Hello, I am having this same issue. None of the guides show if it's required to change static IP or how to. Is this necessary? I'm still on the default static IP, I'm connected via default LAN and I connected to my home wifi following 1st mining rig guide exactly. I'm trying to mine with slush pool. The pool data is entered correctly, as slush pool explains. Do I have to turn off Lan? If I do this how do I reconnect to the raspberry? I already got locked out once and had to re-flash. Also, I might also currently be locked out because I may have ""accidentally"" changed it to DHCP because I got impatient and went for it. pls halpThank you.Oh, and the light on the lil thing between controller ad miner is blue, and the LED's on the miner are yellow.

### Reply 4:
Try to telnet into the RPi and verify the networking is working via command line. Make sure you can ping a public IP and that DNS is working.

### Reply 5:
Yes, changing the IP is needed. If you use the default IP, its probably not the same network as your normal internet, so the machine isn't connecting to pools.

### Reply 6:
what do i change it to?

### Reply 7:
If you changed it to DCHP look check your router to see what IP it was assigned, you will need to use the new IP address to access the controller. You can find your routers IP address on the router usually, log into that and it will give you a list of everything on that network, you should be able to find your Rasp PI controller there. Just realized this is running between 2 threads. try to limit your posting to 1 thread.

### Reply 8:
Change it to DHCP (instead of a static address)

### Reply 9:
Can I do this for both LAN and Wifi? It needs to be set up to use wifi as primary as it will be mining in a location that does not have cable access. I see the option for LAN but not wifi

### Reply 10:
I have not done this before but your question got me wondering so I did a google search and came up with this setup review which seems to cover it. I would still try and run a dedicated Ethernet if you can. I ran 50 feet just to be able to run these in my garage during the summer. Also as you already have a controller and I didn't look to see when this was written, ignore things about the firmware, just focus on the Wifi stuff. Let me know if it works as that could open up a few opportunities around my house later on during winter. Good luck<link>

### Reply 11:
How the poop do I do that? Hello,Yes, that 1stminingrig guide is the one I followed exactly and the miners will not start. I figured out how to log into the router and found the controllers IP address, I can now log in no problems. Phew, first headache delt with I have yet to try communicating solely via wifi, as I'm currently more worried about getting the miner to mine... which I have yet to do. I've attached a link to some pictures of my configuration. As far as I can tell, everything is set up properly, but it will not mine. I've changed the IP to DHCP, it has a new address. I've triple checked the pool address and worker information. After posting this I'm going to be registering with some other pools and adding different ones to see if that's the issue. <link> <truncated> I disabled LAN and can still connect via it's wifi IP address. I've added two more pool address via kano pool... port 3333 and 80, it still won't mine. pls halp I can also now connect to the controller without changing my computer specific IP address... is that good or bad? Lol The error code I found on canaan came back as: ""LOOP0FAILED INVALIDMCU NOFAN PG1FAILED ADC0_ERR ADC1_ERR VOLTAGE_ERR ""What does this<rest of post truncated>

### Reply 12:
I fixed it!! Well, some random on facebook helped me fix it. The slush server I was trying to connect to, useast1, wasn't liking me. When I removed the us-east1 all was well. Unsure as to why kano isn't working either... theres no region spe<rest of thread truncated>
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13266,"Date: 2014-10
Topic: OFFICIAL CGMINER mining software thread for linux/win/osx/mips/arm/r-pi 4.6.1
### Original post:
New version: 4.6.1, 20th September 2014Mainly mofarch updates.Human readable changelog:- Fix the BFL Monarchs with their updated firmware naming not being recognised.- Fix the BFL Monarchs' overheat throttling not working.- Updated avalon2 driver to support nonce2 of 3 bytes' length.- On very slow uniprocessor devices (eg RPi) some shares would appear to have ""no response from pool"" and then later on there will be a response from an ""untracked share"". This is due to the response coming in from the pool even before the share has been added to cgminer's local database. This change minimises this effect (but does not eliminate it entirely).- Fix case sensitivity in API.java- Fix ava2 fixed speed option not working on gen2 devices.- Api-example fix.- Other low level fixes.Full changelog:- Throttle bflsc28 devices when they hit the overheat limit- Add whitelisting of firmware used in final bflsc28 products- API.java - remove lowercase of all data sent- Avalon2: Add 3 bytes nonce2 support- Avalon2: MM needs n2size length <= 4- Use fan min as fan speed when run with <truncated> Clear the pool submit fail bool after adding shares to the stratum hashtableto minimise window the share is not <rest of post truncated>

### Reply 1:
Why does cgminer version 4.3.3 downloaded from Rockminer identify R-box 100GH/s as RMU, but versions downloaded from the .org\apps\cgminer directory that are run from the cmd console list it as LIR as well as averaging 4C higher temps. reporting?

### Reply 2:
The 4.3.3 you download from them is (obviously) not the official cgminer code or driver."" <link> "" is the official source of cgminer.That's why it's listed in the first post here ...

### Reply 3:
Version 4.4.0 - 16th June 2014- Tidy unused rockminer variables- Tidy rockminer defines- Make rockminer driver compatible with other icarus drivers being present- Import basic rbox driverVersion 4.4.2 - 17th July 2014- rbox - add lotsa stats, tidy up a bit more- icarus - tidy up rbox code, remove statics, and add rocketboxVersion 4.5.0 - 29th July 2014- rockminer frequency is between 200 and 400 MHz There is more, but I don't want to seem like a jerk, I realize the Rockminer version is not the same as the Official CGMiner from page 1. I don't recognize another device that would equate to LIR and if the rbox driver was imported I in my limited knowledge of programming guessed wrong that the device could be identified as RMU, or misidentified as LIR, hence the reason why I asked. Secondly, the official build is reporting a 4c increase in reported temp. for a given Frequency as well as a significant increases in hardware errors both in the console work details and the pool, nevermind the duplicates. When I [Q]uit from the ""Rockminer Version"" the console closes immediately even with [W]ork details enabled. The Official Version will allow me to read the details after [Q]uit. But the two<rest of post truncated>

### Reply 4:
Because there is no support for the 100GH R-Box in the official version. If it works at all it's coincidence so I would pay zero attention to how well or otherwise it works. I wrote the driver for the 32GH R-box because that was offered to me so that I would support it. The details you're quoting from the cgminer versions are all to do with the original R-Box only. Why does the unofficial version support other devices? Because they write their own drivers for it continually and never try to contribute their code back to mainline cgminer. We do accept code from other sources, it's just that they all want to do their own thing. They're free to do that, and it becomes entirely their responsibility to support their driver.

### Reply 5:
Thank You Ckolivas, is it possible to gleam anything useful from the debug? I mean with respect to selecting enable work details but the console closing when I press[Q]uit? I am afraid it may have more to do with Rockminer tinkering than not but if there was a call to add in the .bat to list work details after receiving the [Q]uit instruction and ""pause?"" -maybe?

### Reply 6:
Just run it from an open command prompt window instead of clicking on the bat file?

### Reply 7:
They have something screwed up. Trying to write a .conf from within the console, crashes cmd.exe and closes the window. The other choice is to use official cgminer and its not entirely the right driver so performance is hurt more.Sorry, I'm feeling a bit frustrated since I usually can get the software to work but this device (Rockminer R-Box 100GH/s) just needs the gods to tweak the last bugs out. Why can't manufacturers just provide the data and let the programmers merge it properly!!!!!

### Reply 8:
I'd love to have that answer from Rockminer, and Bitmain, and ZeusMiner, and GridSeed, and ASICMINER, and BTC Garden, and, and, and...I've personally given up hope. Most manufacturers have proven that, once something <rest of thread truncated>
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    ""hardware_name"": ""R-Box 100GH/s"",
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8566,"Date: 2014-11
Topic: How to setup a PRISMA using BE Controller ?
### Original post:
Today I just got my PRISMAS but honestly I have NO IDEEA how to set them up.Anyone here that already configured a PRISMA can help me ?I need step by step starting with the wiring coming from the BE controller.How many PCI-E wires I have to connect coming from the PSU ?Thank you very much !

### Reply 1:
I think the expected draw is 250w per board, so you would probably want to make sure that you can deliver 300w per board or so, which likely means using both PCI-e cables.The jumper switches on the boards set the board id number. It doesn't matter if they are sequential, but it makes it easier. Directions for setting them and running the 3pin wires are in dogie's asicminer tube setup thread. Sorry don't have link.I've not set mine up yet, but I will be doing so today, I presume to plug it into the BE controller would be like any other tube setup. Remember only one of the uart ports on the BE controller works.

### Reply 2:
See the Tube guide in my sig, it will do for now until I get my Prisma.

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11415,"Date: 2011-06
Topic: Beta 3 Released! BitMiner - Advanced Mining GUI
### Original post:
Tried running the xp one and got (sorry for the Swedish text, but im currently running a Swedish OS install, its mumbling about a socket timeout to <truncated> Det gr inte att ansluta till fjrrservern ---> <truncated> Anslutningsfrsket misslyckades eftersom den anslutna datorn inte svarade inom en viss tid eller p grund av att den etablerade anslutningen till vrddatorn inte lngre fungerar 210.15.254.246:8080 vid <truncated> endPointSnapshot, SocketAddress socketAddress) vid <truncated> connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception) --- Slut p stacksprning fr interna undantag --- vid <truncated> address) vid <truncated> address) vid <truncated> vid <truncated> sender, EventArgs e) vid <truncated> vid <truncated> sender, EventArgs e) vid <truncated> e) vid <truncated> vid <truncated> fIgnoreVisible) vid <truncated> vid <truncated> m) vid <truncated> m) vid <truncated> m) vid <truncated> m) vid <truncated> m) vid <truncated> m) vid <truncated> m) vid <truncated> hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

### Reply 1:
oh. fuck. I forgot. I had to add a proxy while I was at work. Wait a minute.

### Reply 2:
Sorry about that, can you redownload and test for me?

### Reply 3:
It starts now, ill have to wait untill tonight to test if mining works with it.Question though. do you need to run several instances to have it mine on more then 1 gpu?

### Reply 4:
Nope, create a new profile for each one, then in the poclbm tab, change the device number.

### Reply 5:
Bummmmp.

### Reply 6:
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.************** Exception Text <truncated> (0x80004005): The directory name is invalid at <truncated> startInfo) at <truncated> at <truncated> at <truncated> nick, Int32 failover) at <truncated> sender, EventArgs e) at <truncated> e) at <truncated> e) at <truncated> mevent) at <truncated> m, MouseButtons button, Int32 clicks) at <truncated> m) at <truncated> m) at <truncated> m) at <truncated> m) at <truncated> m) at <truncated> hWnd, Int32 msg, IntPtr wparam, IntPtr <truncated> Loaded Assemblies <truncated> Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 <truncated> CodeBase: <truncated> Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: <truncated> Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: <truncated> Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: <truncated> Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: <truncated> Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: <truncated> Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 <truncated> CodeBase:<rest of post truncated>

### Reply 7:
i put poclbm into this folder: \Beta 3\Vista & Windows 7\created account, using account I have used previously

### Reply 8:
So poclbm is at \Beta 3\Victa & Windows <truncated>

### Reply 9:
\Beta 3\Victa & Windows 7\poclbm.exe?ok i put it all into \poclbm\ that fixed it, now i get another <truncated> (most recent call last):""

### Reply 10:
You need to copy everything into \poclbm\ from the file you downloaded (of poclbm, derp) not just poclbm.exe

### Reply 11:
just deleted all the files, got a fresh copy from the zip file and still the same error...ffs.. this is driving me up the wall

### Reply 12:
Yeah, sorry, i'll be adding alot of error handling code in v4 to help out with this sort of thing. Meanwhile, do you have teamviewer or skype or something that i'll be able to help you with?

### Reply 13:
I got this running again last night but still found it to be a bit buggy. I hit 'run miner' at one point after leaving the 'fallback miner' field blank and got an exception I had to end task out of for example. I think potentially the software has a great future. I particularly like the idea of having a 'fallback' option and graphs etc would be great too. But the bugs need to be ironed out and you need to include options such as the ability to delete miners too.

### Reply 14:
Exactly why it's still Beta What happened with the fallback, did the exception randomly popup? or did it come up with something like ""can't fallback""?And yeah, i'll add that for v4.

### Reply 15:
Yea I think the latter from memory

### Reply 16:
Bump. V4 coming soon with increased error handling and lots more pools!

### Reply 17:
Bump again, failover support fixed (btw I broke it, haha). V4 should be coming soon!

### Reply 18:
Any chance I could get a copy of the src? Im a C# developer by trade and could possibly help out or at the very least educate myself further about the intricacies of mining with this...

### Reply 19:
Possibly, PM me.--edit, remember, it's .net, so it's easily reflectible.

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19080,"Date: 2014-03
Topic: Only 3.9 Mhash/s
### Original post:
I'm only mining at 3.9 Mhash/s. What am I doing wrong? Does it have to do with the device I'm using? I'm currently on [0-0] Intel(R) HD Graphics 4000, but I can also choose [0-1] Intel(R) Core(TM) i3-3217 and [1-0] GeForce GT 720 M. Which one should I pick? Any other tips for a beginner?Thank you!

### Reply 1:
Yes advice is do lots of searching and reading. Unless you are just doing this to learn your hardware should not be mining.Sounds as though you're using guiminer on a laptop...This will shorten the lifespan of said laptop and cost more in power to mine than it can possibly make with those devices.The 720M using cudaminer instead of guiminer IF it can mine at 50Kh/s which I'm unsure of it's specs would generate a rough guess of .00025 BTC equiv per 24 hours or about $0.15EDIT: Forgot to mention it makes even less or completely loses money on electricity trying to mine BTC. The above info was for converting to scrypt mining.

### Reply 2:
wtf. where are you?.

### Reply 3:
mining at 3.9 Mhash/s. is not enough for you?

### Reply 4:
No. Is it enough for you?

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8267,"Date: 2014-08
Topic: [ANN] UnicornHasher AS FEATURED ON THE COVER OF BUSINESS INSIDER!!!!!!!!!!!!!!!!
### Original post:
I'd like to buy at least 20 units. The problem is I am out of space for miners at my shop. Are these units friendly for a house hold environment, will my baby that I do not have fall in and possibly drown? Is there an option that will keep my cats off of it.I know I am late to this miner but I hope throwing BTCBTC in large amounts will get me them.Kthx <3 <3

### Reply 1:
there are still some Unicrons quietly hiding in the post

### Reply 2:
Has production stopped?

### Reply 3:
I heard they broke the special titanium tool for attaching unicorn shoes, had to order another from Narnia, ergo delay sixteen weeks.

### Reply 4:
Announcing <truncated> Dedicated Mining Rentals Here!ThoraHasherTM Exahash ASIC Here!Who made the cover of Bloomberg Business Week? UnicornHasher Biches*Seriously a unicorn that eats hay + asic chips and craps out bitcoins? Sound familiar? Anyone? Gnar1ta$1: Baby UnicronHasherTM2: Live UnicronHasherTM 1PaH 3: News4: FAQJUST ANNOUNCED: Baby UnicronHasherTM, In stock and ready to ship! Limited Quantities available! I guarantee the Baby UnicronHasherTM will ship next week within 48 business hours and will *be capable of* producing the same or more BTC than my BFL/KnC/HashFast orders COMBINED produced in the first 30 days after payment!!!!!!! GUARANTEE!!!!Only .035BTC you can own one of a limited quantity of Baby <truncated> minimum *(Per <truncated> ""Promise"" of 1Mhash of bitcoin mining power!)Support child artists, Mine BTC, Prove that the Baby UnicronHasherTM is a ""CUSTOM MINER"" LIMIT ONE PER CUSTOMER!ONLY ONE BABY UNICORNS LEFT IN STOCK! ACT FAST!SOLD OUT: Hand Made Baby UnicronHasherTM Prototype in stock USA Only Shipping. New Reduced price .035BTC Again this will produce the same or more BTC than my three ASIC orders listed above produced in the first thirty days after paying for<rest of post truncated>

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11282,"Date: 2023-04
Topic: Anyone building hotter exhaust temp ASICs?
### Original post:
Recovering exhaust heat from ASICs can add additional revenue streams for Bitcoin miners. As mining becomes more competitive, this becomes increasingly important.Carnot Efficiency is the theoretical maximum % of the energy that can be recovered from a heat source.Current ASICs exhaust heat at a much lower temperature when compared to Steam Power or Internal Combustion engines. This limits the Carnot efficiency & usefulness of exhaust heat. Is anyone building ASIC miners with a hotter exhaust temp & better heat recovery potential?-Aviral

### Reply 1:
Electronics / ICs tend to perform worse the hotter they get so making them run hotter for the most part does not help. Adding complexity through things like water cooling / oil immersion are all designed to get the heat away from the chips as quickly as possible.Making them run hotter is not the goal. Running them cooler is the goal. You can use the exhaust heat now for heating rooms and such, but to generate enough to do something else does not work with this kind of equipment.Not to mention, it adds complexity and expense.-Dave

### Reply 2:
You increase the heat output by using more power - so it makes no sense to do that.

### Reply 3:
You can run the exhaust heat of the miner into the radiator of a heat pump and get much higher temperatures if you put in relatively low energy into the heat pump. Not shure however if this information will benefit you in any way, since steam engines are at another level in comparison.What I dont understand in your equation is, that there is not the input power needed. A miner will put out 99% of the input power out as heat. A steam or combustion engine will not convert 99% of input power into heat.

### Reply 4:
Wrong. Even the minuscule amount of energy that 'leaks out' as data over the LAN becomes heat.100% of the power feeding a miner is turned into heat. Even the energy transferred to the air by the fans increasing the air pressure so it moves also slightly raises it temperature.The energy feeding any device cannot just disappear. Even when used to cause motion or whatever, at the end of the chain it eventually it becomes heat.As for the OP's equation - that deals with the amount of usable work energy that can be recovered from the energy put in. 'Usable' being defined as being able to produce work be it powering a pump, moving a vehicle, etc. or generating electricity so the recovered energy can be used elsewhere. A miner does not do that. It just sucks in energy and uses it to power circuitry for the calculations & runs other sundry things like the fans. Since aside from running the fans no physical effort is created all the input energy consumed is directly transformed into heat

### Reply 5:
I understand that the efficiency of current ASIC chips drops drastically at higher temperatures, so increasing exhaust fluid temp seems like a bad idea. Current ASICs designs are all essentially treating exhaust heat as a nuisance that needs to be discharged. While this has worked in the past, as this space evolves, anyone who is able to reuse the 'waste' heat will be more competitive than other miners. The relatively low exhaust temps that we see coming out of ASICS, has restricted the use of this energy to space heating, drying type of uses. If the exhaust temps were much higher, you could run an engine off of it, to produce mechanical or electrical energy from it. Those are forms that are easier to transmit and store.Current Silicon based semiconductor and PCB designs can handle much higher temps than <85C temp that's recommended on Antminer S19. In fact, Antminer S9s used to run much hotter than the new-gen miners. New semiconductor substrates like GaN, SiC & GaAs might be able to sustain even higher temperatures.

### Reply 6:
Actually spondollies did 120c if IIRC.But that is not superheated steam it would be more or less slightly overheated steam at best.So pretend you do that what good is 100-110c hot water/liquid? Is the benefit of having a hotter liquid (105c) outweigh the better power use at 80c for a mining chip?editI did come up with this idea slow cooked brisket. you can cook brisket at 210 f to 225 f. 10 to 14 hours it is very good.So liquid cool the chips and you build a heat pump to radiator oven setup that is on view you slow cook the best brisket possible.Of course it would need to be tons of brisket if you have a big farm you need a bigger scale than this one

### Reply 7:
Those Bitcoin Maxi Carnivores are going to love this Brisket idea!But I was thinking more along the lines of converting thermal energy into mechanical or electrical if the exhaust was hotter. Actual implementation of anything like this is going to take 100s of millions of dollar or even more, so not really expecting anyone to just come up with a solution. But if we can motivate an ASIC hardware manufacturer to have recoverable heat that can be converted to work<rest of thread truncated>
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9855,"Date: 2016-06
Topic: Pair on s-9s now running photos to come .
### Original post:
Looking forward to your review!

### Reply 1:
The one to be delivered here today looks like it was picked up late and sat for a while, so it probably won't arrive until Thursday. Tomorrow possible. Darn, and I was hoping to be the first one to post pictures.

### Reply 2:
we needed to get lower freqbut here are final setting on the 2 runningfreq 625fans at manual 70%<link> ---- full size <link> ---- full sizeboth at kano.isat kano.is

### Reply 3:
I'll leave other to post pics. Got mine today and so far am - happy - with it but...A. is so far averaging just over 13THsB. A thermal design issue raises it head with these. The middle card and the one with long finned heatsinks facing the case wall run well over 4.3-.5 THs each. They report chip temps of around 90C. The one with the short fin topsinks facing the case is giving a bit over 3THs and reports the chip temp as banging around 99-100C. The air coming out of that card is also substantially warmer than the other 2. Will measure temps tomorrow sometime.The root problem is that the short sinks are presenting a much high airflow resistance because the flow channel is restricted by them and the case wall. If somehow move the cards over a smig, hell even 1/8"" might do it, then airflow should remarkably improve.edit: Also, mine wants to be a howler but I found a way to mitigate/highly reduce the siren effect: Put a square piece of open cell foam (air filter kind) over the grill of the intake fan. Suction will hold it fine but a touch of glue/tape whatever wouldn't hurt. Anywho -- it disrupts the airflow just enough that volia' howling gone.Of course your mileage may vary

### Reply 4:
Hmm, wonder if I could fit an English Wheel (metal panel forming tool) through the case to bow out the top-sink side? think think think...

### Reply 5:
Thanks for the effort and picts, phil.kano.is IS....

### Reply 6:
yes short term I down clocked from 650 to 625.But UPS was late.I had to dissemble the avalon6s from the array.My sprained ankle from 65 days ago still hurts. ( bitch to be 59 it would have healed in under 10 days when I was 25-30)The mining gear is in a loft with a ladder.First time I turned them on I climbed down the ladder knowing they were mining for bitmaintech. So we went to the pc to check them and setup kano.istemps were very high chips in the 90'sonly 2 machines and a large loft I was supposed to point miners in the direction in this photoabout 70 feet and an up draft fan in the center

### Reply 7:
so once I realized miners were blowing hot air at the near wall I spun them around this allows for okay tempshere they are blowing air towards the far wall about 70 fthere are the avalon6's I replaced. you can see the grates below allow cool air to be pulled from below.pointing the s-9 units towards the far side did get temps okay.

### Reply 8:
I guess with these high temps we can assume that the fans are as loud or even louder than the S7s

### Reply 9:
loud as the s-7 and I have one unit that squeals like a stuck pig.I know there is a fix for that if anyone had a squealing s-7 and wants to post the fix please do so.My guess is we will mine at 600 to 625 with the s-9's until the fall but no pressure at the moment to decide.maybe simple box fans will cure all cooling as we only have 2 units with two on the way.

### Reply 10:
They'll probably run even hotter at the default clockrate. I wouldn't be surprised to see miners breaking down in the summer heat. With these temps, you'd either have to underclock or replace the fans altogether- those temps will shorten the running time dramatically. Disappointed that Bitmain shipped a miner clocked so high that it can't even manage it's default clock speed without high temps. Just more proof that their quality is going downhill fast...Lol sorry, ninja edited 3 times. Perfectionist :c

### Reply 11:
at what I paid for these no oc until sept or oct. I need to get back some money.oh I am pretty sure these pull more juice then the s-7 when set to stock.

### Reply 12:
re-read my post <link> for the edit about that... The effectiveness varies with fan speed but helped immensely here. Should apply to s7's as well.

### Reply 13:
I had an S7 that the fan squealed. The trick was to move a small piece of paper around the intake fan. You keep moving it around until the you find the spot that the squeal stops and then you tape it there. Another solution that worked for a bit was to loosen the screw a little bit.Do you know what the ambient temps were when you got the screen grabs?

### Reply 14:
thank you I will pick some up at lowes<link>

### Reply 15:
I would think it was 88f because it is a loft.I am not sure the safe chip 0c number , I know that spondoolies sp20 chips throttle at 125cintel cpus' throttle at a 72c junction point could be wrong on thisamd gpu's throttle around 93cbut the readings may not mean much.the pcb number of 65c should be go<rest of thread truncated>
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23822,"Date: 2021-12
Topic: Bitfury b8 overclock to 68 tera hash
### Original post:
Dear membersDoes anyone know how to overclock b8 hash rate to 68 Please if anyone do please send me detailsThanks

### Reply 1:
That miner is quite rare. You might find more Bitfury B8 experts at Russian speaking forums (eg. Bits.media).Please share if you find something there.

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20002,"Date: 2014-11
Topic: I'm totally new to mining. Is cloud mining effective?
### Original post:
As the title says, is cloud mining effective? Also, which ones do you recommend? I'm totally new to all of this stuff, so don't hate me for it. One more thing, I'm using a free 10GH/s miner on hashie.co, can I get any profits from it?

### Reply 1:
My advice be careful on all that they say are best and give you a referral link.Personally I like hardware myself, but realize everyone cant do this because of situation.If you look in beginner you will see 10 gig free for GAW. You can test it out yourself.

### Reply 2:
My opion is if you want to start mining use your own hardware, I don't trust cloud mining services, check on ebay have miners with good prices... what coin you want to mine ??

### Reply 3:
If you want to withdraw funds on hashie.co you will need to buy at least one paid miner, so it will be very hard to have any profits.

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10415,"Date: 2017-08
Topic: Bitcoin Mining Operation - Accounting
### Original post:
Hi All,Thanks for the help in advance.As stated in my couple of previous posts I have invested decent sums of money in mining (50K) planning to invest another 200K. Currently refurbishing an industrial building to help support this operation.Since this a cost oriented exercise, I would like to see if I can do this under a LLC.Can anyone advise a good accountant in US who does this Crypto related accounting for a living? I want someone who has done this before for a mining operations, need good advice and guidance rather than someone to fill up forms. Let me know

### Reply 1:
Since you are running this as a business (best way to do it!) along these lines, be aware of the IRS section-179 for capital equipment expenditures. Miners fall under the same category as PC's, servers, etc. and can be entirely written off as capital equipment necessary for the company:D

### Reply 2:
There are some good resources, and a few decent BTC tax lawyers that are a google search away. Keeping meticulous records is the most tedious part.

### Reply 3:
Thanks guys and NotFuzzyWarmI rather do this legit and keep everyone including the taxman happy

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7568,"Date: 2014-04
Topic: Time to upgrade
### Original post:
did someone lose a shoe right there in the middle?

### Reply 1:
Haha nice callI don't understand OP post anyway

### Reply 2:
Uh, time to upgrade what?Are you trying to say this is your mining operation? Because I sure don't believe you. Why don't you try convincing us?

### Reply 3:
This is not mine but its real and I did take the picture. It will run 1200 TH/s.

### Reply 4:
It is truly gorgeous! How long until it ROI's?

### Reply 5:
ROI? He's doing it just to support the bitcoin network!

### Reply 6:
I don't see the picture :

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22749,"Date: 2018-09
Topic: Error of set PIC FLASH ...?
### Original post:
Common problem on the 1117 firmware. Roll it back to an older official firmware and your problem should go away.

### Reply 1:
The interesting thing is that there is zero hashing with the 1117 firmware and with April firmware only 2 boards work. What other previous versions do you recommend I try out? Scared to fiddle in case they totally stop working.

### Reply 2:
Guys, April firmware does not help me, still Error of set PIC FLASH addr... I tried completely different PSUs, I left only one hashing board connected to controller and to PSU, but still nothing.Please help me somebody...

### Reply 3:
Probably something wrong with the hashboard.You can always try using the package to fix fw upgrade, flash it to SD card, move the jumper pin and flash using microSD. (Flashing the april firmware of course).

### Reply 4:
Hi AllIssues with my Antminer S9...Is one of my boards fried?With latest firmware Fri Nov 17 17:57:49 CST 2017 I do Not see a Hardware Version and BMminer version and zero hashing on any of the boardsWhen I load up firmware version from April 2017 I see 2 boards and they hash but not on antpool only on nicehash.Kernel log below...Code:Check chain[5] PIC fw <truncated> PIC need restore ...Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]After restore: chain[5] PIC fw version=0x00Thanks in advance for your <truncated>

### Reply 5:
^This. But, it seems like you have already have tried flashing the older firmware.name: <truncated> <truncated> sounds like at least the other 2 boards should work now. Try unplugging the faulty board and see if the miner will hash natively using the other two.

### Reply 6:
I wouldn't try any other firmware besides the one from April. There's probably something wrong with the third board.

### Reply 7:
It might be the control board is bricked since, the April firmware doesn't work the only way you can do now is to reflash the whole control board to fix the issue. Please read this <link>

### Reply 8:
Doesn't look like this. I can log in to web interface, I see the kernel Log, I can reboot the miner etc.

### Reply 9:
I see this issue almost daily. Usually rolling back the firmware will let you run while ignoring the issue.If a board is zero you can replace the PIC with one from a spare board if you want to. Bitmain doesn't seem to sell spare PICs.I have also seen the issue happen because of a faulty ribbon cable. Try replacing the ribbon cable to the board giving you the issue.If you get the 413 error when flashing firmware, use a microSD to flash manually.

### Reply 10:
Hello BliksemMinerI am Rainer and I am also a miner with an ANTMINER S9 of 13.50T and I have the same problem you have or had:Code:Check chain [5] PIC fw version = 0x00chain [5] PIC need restore ...Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]Error of set PIC FLASH addr: addr_H = 3 (0) addr_L = 0 (0) on Chain [5]After restore: chain [5] PIC fw version = 0x00I would like to know how you did to solve the failure, since when updating the FIRMWARE it is not coencted but when changing for an anterior it only connects with two (2) cards and lowers the HASH rate.You can help me please, if it is possible for you to send me the firmware you used or still present the flaw.Atte.Rainer

### Reply 11:
Sounds like your PIC error is only on one board. Flashing the April firmware let you ignore that error and continue to mine with the other two boards.If you want to, you can replace the PIC on the faulty board with one from a spare board if you want to. Bitmain doesn't seem to sell spare PICs. Also, try replacing the ribbon cable to the board giving you the issue.

### Reply 12:
it's exactly the same problem as with my T9 +, see my subject;)In your case, I am 99.9% sure that with the PicKit3 you bring back to life your card!1: extract the HEX file from a functioning card2: the reinjected into the card that does not work (FW 0X00)Ps : the PicKit3, the cost is ~_ 25USD

### Reply 13:
Where can I find the April firmware?

### Reply 14:
Have you tried to flas<rest of thread truncated>
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  },
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    ""hardware_name"": ""April firmware"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9"",
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  },
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    ""hardware_name"": ""PIC"",
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  },
  {
    ""hardware_name"": ""ribbon cable"",
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  },
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    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""microSD"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PicKit3"",
    ""hardware_is_owned"": false
  }
]"
9918,"Date: 2016-07
Topic: s7 only mining at 3ths?
### Original post:
hello,I have a pest s7 that has only been mining at 3.1ths. it is very hot though. Ive been having to shut some down during the days until next week when the outside temps cool down.could the heat have damaged the machine? It is the 1 fan model. Anything I can try? Thanks.

### Reply 1:
Try putting ice blocks next to your machine with a fan directed at it. It'll help on cooling down your machine but it's not good for permanent use. You would ofcourse need to give your miner a rest.Not sure about why it's only 3 th/s though.

### Reply 2:
LOL is this some kind of joke?BTW all of the asics are hasing. Just have no idea why so low. Temp is only showing 79 so not bad.

### Reply 3:
Weird. 3.1TH would be about right for having dropped one board; are all three reporting high temps or is one a lot colder than the others?

### Reply 4:
im wondering if overheating a few times a day for like a month a year will just wear out the machine. i hope not. if so i may have to shut the farm down during the days. its just too hot for the next week or two

### Reply 5:
all three are showing mid 70's it literally just kicked over to 4.7 ths. i had a few power supplys fall and were hanging from the boards the toehr day (not good)im wondering if a solder joint came lose. Not likely but possible.Also did you know you can rent a nice car in cancun for just 1.92 cents a day

### Reply 6:
back down to 3.1 again maybe because its the single fan model it just cant take the higher temps as well. I was thinking about building a few evap coolers out of 20"" box fans for cheap like you see on youtube. Anyone done something like this? <link>

### Reply 7:
sorry to post so much guys. it does indeed look like a damaged board. The LED light that is red is not coming on all the way. Its very dim. Not sure what this means but on all the other machines all 3 boards have bright red LEDS.I am guessing this is basically unfixable by me. Major crap/bummer.If anyone know how i can fix lmk but pretty sure its impossible

### Reply 8:
Down clock it to freq 500. See what happens

### Reply 9:
At 3.1 TH/s it sounds like one of your boards isn't running in the S7.

### Reply 10:
doing it now. Can you please message me back about the solar array sir? I would like to get one setup myself. I have heard there are all types of tricks to get big discounts. Let me know i look forward to us chattingp.s. what exactly does frequency mean? Also @phillipma what does ""i charge a monthly flat rate for my signature mean"" ?edit: i changed to 500 freq still hashing at 3.1-3.3 im sad

### Reply 11:
I am a habitual poster. i.e. I post a lot So rather then keep a post count for my signature I sell it for the same amount every month.Everyone knows I post 300 to 700 times a month. I did this since I have been here on the forum. you can look back at all my posts and see I post.You can also look at other sites and see I post a lot there. I also feed back my btc from the signature money into my difficulty thread contests.Yeah looks like you killed a board. on that s-7as for the solar array you told me in a pm you have very cheap power so what state are you in and what is your power cost?in some states solar power is not worth doing. the rebates are poor and if you pay under 8 cents for power already the switch is not worth it.

### Reply 12:
I pay about 0.025 cents. Id rather not say my location. Im sure some people here know. Anyway. Its not really beneficial for me to have an array that much. Hosting some equipment would help pay it down. I just want it there for fun and also some shade.I thought there are ways to get very cheap setups now. Somehow they subsidize it through the govs? IDK much about it. If its not possible obv im not interested in paying that much.I still do not understand what you mean by charging for your signature? Are you saying you charge to post on sites?

### Reply 13:
There's several causes to this roblem. 1. probably easy to fix - a broken hashing board - you can order a new one of these fromBitmaintech. 2. harder to fix - it could be that if you have overclocked it and not regularly checked the clock seed or have used it for a long period of time (say more than 3 months uptime) you may ave exhaused and need to replace all three in order to fix the roblem If the first is true you'll see one board is not transmitting information on the GUI, is colder than the others... (you can look for moe diagnosics online if necessary in order to check this).

### Reply 14:
yes I am in New Jersey , Usa and it has a very good subsidysome states are very bad >>>> Wisconsion does not help you if you go solarsome states are very good >>>> New Jersey is very good.if you are at that price 2.5 cents solar will more.Here is the signature that pays me monthly<link> is for this site. I am paid a monthly flat rate from him.Click on the blue advertisement below my post : CoinsBank is the company.I use that payment to r<rest of thread truncated>
","[
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    ""hardware_name"": ""s7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_is_owned"": true,
    ""hardware_name"": ""power supplys""
  },
  {
    ""hardware_name"": ""20\"" box fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""solar array"",
    ""hardware_is_owned"": false
  }
]"
11881,"Date: 2012-04
Topic: Email notifications in BAMT
### Original post:
I want to setup email notifications in BAMT. I currently use GMAIL. But I suppose your password is sent clear text when you use this option am I correct? Is there a secure way to use it or should I setup another email solely for this purpose. THANKS

### Reply 1:
Just make sure you use SSL or TLS. Then it connects securely just like any other mail client would.<link> instructions are for POP, too, but the SMTP part is what matters for what you are doing.

",[]
13685,"Date: 2021-04
Topic: Mining Pools
### Original post:
Is there a benefit to joining a Mining Pool versus doing it yourself if you have some of the AntMiners or larger rigs? I'm looking at building some large rigs and new to this. thanks!

### Reply 1:
You cannot 'build a rig' for mining Bitcoin.Only ASIC-based miners are able to mine BTC and there is no way in hell a person can build them. They are only available from a very few companies (with very deep pockets to pay for the R&D + manufacturing involved) that specialize in them.

### Reply 2:
Pool mining is the only feasible profitable way to mine bitcoin, even if you invest millions of dollars in gears you are unlikely to make a steady profit mining alone, the network hashrate has grown too huge for a single entity to mine solo, let alone a single person.With that being said, you should also know that the size of the pool is very important, small pools that don't pay in PPS are more like solo mining than pool mining, your rewards will vary greatly and you might not even get a single reward for the life span of your mining gear.

","[
  {
    ""hardware_name"": ""AntMiners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""large rigs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC-based miners"",
    ""hardware_is_owned"": false
  }
]"
13458,"Date: 2015-12
Topic: Is there any up to date CPU/GPU miner?
### Original post:
I'm developing a pool software and would like to test it against a fairly modern GPU miner on testnet.Everything that I found is super outdated and braking most of the time.I currently don't have an ASIC, this makes real testing impossible.So I figured out that maybe using a GPU on testnet would work (difficutly arround 4TH/s).Is there maybe a software only mode for cgminer? Just to check if ti picks up jobs correctly from my pool?

### Reply 1:
No one mining BTC mines GPU or CPU for years.Go visit the alt-coin section and ask there.

### Reply 2:
I agree with you only mining companies like genesis mining can mine bitcoins now and also big mining with specialized mining equipment..My advice is to mine alt coin and exchange them to bitcoin many are doing it now

### Reply 3:
I would advice to be carefull tough... Mining altcoins might not make you a profit either, if you don't know what you are doing exactly, chances are high that you'll spend more cash on electricity/PC/GPU then you'll make on the altcoin you're mining.

### Reply 4:
if you going to mine Alt coins don't mine the btc type, i would do script coins you can still make a nice profit if you have the speed ,I wouldn't even bro with SHA256 alt coins any more unless there merge mind while you mine BTC . I don't mean nice hash, west hash, mining either .Who said you can't mine btc anymore you can as long as Bitmain, Alvan etc sell to the public, you can keep doing it. it may cost per miner, it's still there.I don't see how a company/s will ever be able to shut it down to The public,and sense there is no way to, other then stop selling miners to the public , it won't stop, unless bitcoins become worthless or laws make it illegal.Bitmain, has no plans to stop selling either in fact they now offer to fix old S3 S5 and up hash boards, at a cost, they all ways would but now they give out RMA's and have a set price range and tell you how to do get a RMA on there site.CPU mining was how it all started and not worth it any more , you can still do it, if you want a very high Electricity bill, then go for it .you won't make jack etc and end up paying the power company or worse have your power shut off because you can't pay the bill and there is no such thing as fr<rest of post truncated>

### Reply 5:
This site right now, is about the only site that offers the soft ware you are looking for, most other sites, that cpu and Gpu mine thatoffer it, seem to, link to the software part of nice/west hash .<link> GL cya.

","[
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    ""hardware_name"": ""GPU"",
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  {
    ""hardware_name"": ""PC"",
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  },
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
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]"
4197,"Date: 2012-10
Topic: Suspicious network activity - someone already mining with ASICS?
### Original post:
- Ghash/s jumped from under 20.000 to almost 30.000 in the last few days -> price of Bitcoin tanked- Ghash/s heading towards 20.000 again today -> price of Bitcoin went up againSo I would say: YES, there is *someone* mining with some sort of miracle hardware (not saying it's BFL *g*). And this *someone* might have overdone it a little - and now slowing it down a little so that it's not too obvious ...

### Reply 1:
Maybe it was just BFL testing the 1,500 Ghash/s rigs. Would you stop ASICS, because it'd be too obvious? I don't understand it. Maybe someone stopped a huge rig to avoid a 51% attack and making the mined BTC worthless? (looking at the ""unknown"" miners)

### Reply 2:
BTC tanked because of the recent GLBSE stuffrate went up because it's getting cold in thh northern hemisphere

### Reply 3:
It's just random variance, lol.Look at a 8-hour moving average:<link> here's a 24-hour moving average:<link> only think there's something going on because you're looking too closely. The shorter the period you average, the more you'll see the randomness.And here's a simulation of the randomness you should expect even if the hashrate were constant round the clock:<link> with a 24-hour moving average, you should expect variances +/- 20%, so if the true hashrate is 25 TH, you can expect a 24-hour moving average chart to swing around between 20 TH to 30 TH normally.Take your tinfoil hat off.

### Reply 4:
Yep +1. This and GLBSE.

### Reply 5:
It definitely did not jump from 20000 to 30000 in the last few days.

### Reply 6:
BFL has said they will be using testnet in a box. So you will likely not see their ASICs mining too much on the main network, even if they had these prototypes up and running.

### Reply 7:
good news for you !!!you can see here how many users they are on eclipse<link> Miners 1497Current Speed: 1.73 TH/sof course they are asic miner who mining !!!!here the production line <link>

### Reply 8:
rouhaud, why do you keep linking those pics in every thread. They are old pics from mini rigs. Who cares?

### Reply 9:
Bfl are dancing in circles looking at the results of their super powerfull Asics.Bfl worker: all hail the ASIC gods! <truncated> at 1.54 terahash mauahhahahahahab bitcoin domination!Bfl are a threat to the 51% danger line. I reckon they are sitting there slowly reaching the 51%.I can imagine a underground bunker with a load of nutters on computers.I'm looking at getting a jelly. I reckon if I pool mine the difficulty won't effect me! All that might effect me is the price drop which means most pools will drop reward per share!

### Reply 10:
Similar to Eclipse terrahash rate is also <link> and more than 1200 workers.

### Reply 11:
Inaba corrected me awhile back and said BFL doesn't do tests like this: <link> Now bASIC and the other ASIC companies I'm not sure of...It's been that way for a month or so now (maybe longer?). I've been mining with EMC since January when it 400gh/s or so at the time. It's slowly been on the rise ever since. In fact, I think Gigavps just moved his miners over to EMC a couple of weeks ago. It has been gaining in popularity, but ever so slightly over the course of awhile. It's not like it got an extra terahash over the weekend.

### Reply 12:
problem is that there are three companies offering ASIC (maybe more but we do not know it). If one of them starts mining, none of us will have the sure which of them increases the difficulty. It will be a war to finish the competition with false accusations. Currently ASIC ROI is about 10 days. It's a great opportunity to earn a lot of money(more than on preorders) and blame it on the competition. we are witnessing a war of specification now, this is not the last war.

### Reply 13:
sorry to drop some reality on the tinfoilednessEMC's hashrate went close to 2thash when Ozcoin introduced fees and dropped from 2Thash to 800Ghashall ASIC manufacturers have now said they will not test on mainnet...well covered in other threads

### Reply 14:
Another helpful tool when evaluating what is going on with the network is blockorigin. They use a detailed list of over 25 pools and crawl their respective sites to figure out what pools are finding what blocks.Big swings in the hashrate can usually be attributed to luck of the entire network rather than ASICs or Botnets.

### Reply 15:
Thanks for that link giga. Hadn't seen that before. If I were to test a large batch of ASICs with that magnitude of hashrate, I would solo mine with a few different addresses so in lists like that it would just be attributed to ""Unknown"" and the addresses would be different. That would be a pretty low key way to do it. However some of these ASIC companies might be more likely to generate an address with a not-so-subtle string like ""bASIC"" or ""Avalon"" in the address, just for more pre-orders.

### Reply 16:
Blockorigin usually reports about 12% of blocks found a<rest of thread truncated>
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    ""hardware_name"": ""mini rigs"",
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    ""hardware_name"": ""jelly"",
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]"
23174,"Date: 2019-12
Topic: Antminer S17 - is mining but not showing up in antpool dashboard
### Original post:
Im new here and to ASIC mining, so please excuse my plebishness, still learning!So i got my S17 5 days ago, it didnt instantly work, because i was getting ""Hardware version: Socket connect failed: Connection refused"" error, which resolved itself, after running for 5-10min, is this normal?Yesterday i was testing out stuff (not smart) in the APminertool, i pressed ""config"" which said ""config failed"" after it had runAfter that the miner disconnected, rebooted i think, here startes the problem;In the APminingtool the mininer is hashing away, everything looks normal, on the statuspage for the miner everything looks normal all pools are alive and miner is hashing.But on the antpool dashboard the miner is showing as inactive, and today i didnt get the normal payout that i used to get.When i go into miner settings on antpool webpage it says that the miner is mining bitcoin, but still marked as inactive.Im wondering if the error has something to do with the network cable or router, because the lanport on my router is blinking an amber color (dont know if it was amber when everything was working), which i think means 10-100mbit speed, but my router Netgear R6800 is only one year old, and wor<rest of post truncated>

### Reply 1:
Did you set the miners configuration if you point the miner to antpool mining address?Check the miner's configuration and put the antpool miner's address including the worker name and pass. Make sure no extra spaces because sometimes it won't hash or it will show in antpool dashboard inactive. Check this link from antpool to guide you how to config your miner <link>

### Reply 2:
Yes it is normal for ALL Antminers since the s9 batch-15 when BM started using an Autotune function for the miners to test themselves and decide how fast they can run. You will get that message for as long as autotune is running.Depending on a lot of things autotune can run for several min to over 45min before the miner starts hashing.The one good thing is that while they are testing themselves you can enter user & pool info and restart. Then once they start hashing they will be doing so pointed at your pool vs BM's.

### Reply 3:
Really sorry for the late reply.In the middle of exam season then xmas vacation. Here is what happend, 15 min after i wrote this post, I was going through the miner status, i saw that the name had changed, I think it changed to some default name. After I changed the name back to the original, the miner started to show up in Antpool dashboard and on app. So i quess it was that easy..><Anyways. thanks for replying! Regards mining pleb..

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    ""hardware_name"": ""Netgear R6800"",
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12981,"Date: 2014-03
Topic: Need a simple way to log the CGMiner's output message.
### Original post:
Hello Dear Group: I want collect the output message from running CGMiner, which is simple way to do it? I need store the output data to a text file, if it can output to redirection to serial port is better. Any information will be appreciate.

### Reply 1:
CGminer is open source. You can easily modify it to do anything, including dumping stats to a file.

### Reply 2:
Thanks, but I want a simple way, like as add some parameter or use Re-direction or pipe etc.

### Reply 3:
add: 2>log.txtand it will store all output in log.txt... though all of that and much more is documented in the readme as well.

### Reply 4:
Hello ckolivas, I am great pleasure to got your reply, it works, thank you very much.

",[]
9157,"Date: 2015-06
Topic: Prospero Black arrow x3 ?
### Original post:
Hey, so i just got one of this on my hands.I got it for about 160us whit free shipping.I Have some questiones, Is the psu Swap Able for a more secure one, and how about the overclock , the seller told me it's cappable to clock to 1.5thz?.My electricity is FREE so i don't have concern about that, i am even considering get an Antminer C1 for about 250us need to check my wallet .But the idea is to use the free electricity and make something off it. 2thz is what i am looking to aim right now-Any modification ideas and experience is worth to look at, noise reducing also.

### Reply 1:
Careful, these units are fucking shit and have a history of burning up.As for the PSU, there's nothing that I know you can swap out but if you hit up the main BlackArrow thread you might find someone that bought a compensation PSU and got stuck with it after they lied and never sent any compensation.Best of luck

### Reply 2:
Yeah i've readed some about burning unit's, to be honest i haven't been able to find much about the unit, i tought it was a good buy before i even did som research , i might have to inspect it my self when it arrives , tought i am still considering buying that Antminer c1 unit, might even sell the black arrow and use 2x antminers, well ill see how it goes, still need to make the Electrical installation will try to keep updated here as soon as i get my unit

### Reply 3:
I have some BA X3s and the originally shipped ones have an issue burning the chip. Pop it open and see if you have the ones shown in the pic. Take a look. you may need to have the boards replaced. I replaced all of mine and they have been stable for almost 2 months. One of my orginal unit did suffer from 3rd degree burns BA replaced the whole <truncated>

### Reply 4:
I believe there is a post some where that shows you how to fix the problem on the circuitry I would definitely do this before leaving it alone. Otherwise happy mining.

### Reply 5:
You have to remove 10 resistors, big green ones on the front of the boards, they are the only theres, BA have uploaded a video, it was them that were burning and was not supposed to be there aparantly some factory misstake.

### Reply 6:
Careful with that thing. We had a client show up with 40+ of those back in the day. (Oh 2014...) Thankfully most of them were DOA. I have had literal bolts of electricity jump from the shit PSUs. If you really have to run it, make sure it is somewhere it won't cause any damage if/when it goes up in flames.Over clocking won't happen, be happy if it runs above 1TH. The efficiency makes it a money loser.May God have mercy on your soul.Edit: I strongly recommend under volting it as suggested above. Will prevent your death.

### Reply 7:
Yeah, I've had two of these for over a month and haven't even bothered firing them up yet. One hasn't been unboxed. The other came in with half the caps already mushroomed. I recognize the garbage brand as one of the most common failures I saw in the couple years electronics refurb was my full-time job. If I fire them up at all it'll be after removing or replacing all those capacitors, and not on the stock PSUs.

### Reply 8:
100% agree with aforementioned comments. The owners of BA, who contracted out all of the work to build those units because they were pieces of shit engineers and businessmen, have stolen millions from people on this forum. I would not recommend doing business with BA either now or in the future. Get rid of their fire hazard as soon as possible (if bought online get a refund and send it back immediately). Get some antminers instead, much more reliable, much better customer service. You will have an all around better experience.

","[
  {
    ""hardware_name"": ""Prospero Black arrow x3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer C1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BA X3s"",
    ""hardware_is_owned"": true
  }
]"
19779,"Date: 2014-08
Topic: How to determine which blade in an S2 Antminer is defective
### Original post:
Friends:I have an S2 Antminer that shows defective blade on the ""Status"" tab once I log into the command line for the S2. The defective blade is identified by a row of 64 X. Once I open the S2, how can I identify the defective blade so that I can switch it to a different slot?Thank you,Justin

### Reply 1:
looking at the S2 from the front, I believe the blades are numbered from left to right 1-10 (not counting the controller board of course. Sometimes just re-seating the board in the slot does the trick...

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    ""hardware_name"": ""S2 Antminer"",
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  {
    ""hardware_name"": ""blade"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller board"",
    ""hardware_is_owned"": false
  }
]"
9452,"Date: 2015-11
Topic: issue with DUB-H7 ?
### Original post:
Hello,I'm running 2x GekkoScience Compac BM1384 Stickminer on a D-Link DUB-H7 (3A) connected to a Raspberry Pi2 running <truncated> regularly get 1 miner stopping working. (always the same)It looks up (green LED), but no flashing white LED and minera reports it as dead.I have to either unplug/plug the stick or disconnect the USB hub and power it off/on and reconnect it.I'm using --compac-freq 210 (1x 11.91Gh/s, 1x 10.97Ghs/s), V set at +/- 0.75.I did not have this behavior on the Belkin F4U018-BLK with a 2.5A power supply that I used before yesterday.

### Reply 1:
so you are asking for the hub to run 2 sticks and a rasp pi?and you wonder why a 3amp hub failsbut a 2.5 amp hub succeded?the rasp pi is a picky piece of gear it likes usb2 more then usb3 and it does not like all usb2 hubs.the belkin is a usb 2read amazon negative reviews on your dlink<link>

### Reply 2:
The hub doesn't run the Raspberry Pi...(I didn't get what you mean, my apologies) , the RPI runs on it's own power supply and the HUB has its own too.This hub is recommended here specifically and it is a USB2 hub (I did some research before, I'm not a complete newbie although I can be distracted )<link> this is for BE, not the GekkoScience Compac BM1384 Stickminer, but it is on the RPI)All (well most) review from this year are positive.The bad reviews are really old.... so they may have been some change in design. (and on top of that, my trust of internet Amazon's reviews is very low...)

### Reply 3:
Depending on how the hub is set up some do backfeed and turn the RPI on though powered usb. The RPI can be a little picky even on usb 2.Usb 3 you can count on not working. Usb 2 is not guaranteed to work with RPI. If you google you will see some still have problems with RPI.

","[
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    ""hardware_name"": ""D-Link DUB-H7"",
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    ""hardware_name"": ""Belkin F4U018-BLK"",
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19213,"Date: 2014-04
Topic: LKETC Dragon miner 32 chip image (FIXED PLS DELETE)
### Original post:
Got the image.

### Reply 1:
Why not share where or how you got it so others who had your problem can find it also?

### Reply 2:
<link>

### Reply 3:
<link>

","[
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    ""hardware_name"": ""LKETC Dragon miner 32 chip"",
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]"
16077,"Date: 2021-06
Topic: is using pool, mandatory?
### Original post:
Hellois using pool, mandatory?how can i mine without addressing (config asics) my asics to pool?can i mine without pool and just wait for my chance to mine a bitocoin ?

### Reply 1:
You have to do solo miningYou can do it through BitcoinCore node or with a pool like ckpool or kano...You have to know that chances are low if you don't have tons of Th/s / Ph/sGood luck wish you to solve a block

### Reply 2:
Not mandatory.To be given a reward, you need to solve a block. With the increasing difficulty of the cryptographic problems or sometimes called ""hash puzzles,"" it would be harder to solve them. So when you continuously mine on your own, you will have the entire reward, but you need to have enough hashing power to do it, or the other miners can beat you to it. I think the best way now is just to join pools.

### Reply 3:
It may worth mentioning that solo mining is also called lotto mining, and it's for a good reason. You have a great chance to never hit any block, hence only waste electricity.

### Reply 4:
Also, one should point out that there is no 'race' to get a block.No one can 'beat' you to finding a block, since you just keep modifying your work each time 'anyone' finds a block and continue on.Someone else finding a single block has no effect on your chances.The only issue related to that, is that every 2016 blocks found, difficulty changes.You are expected to find, on average, if you find a large number of blocks, close to one block per every 100% of share difficulty you mine.This doesn't mean when <truncated> = 100%, since difficulty changes.It means when you add up the value of each share you mine as a % as share/difficulty, at the time the share was calculated,you are expected, on average, to find about 1 block per 100% of share/difficulty you mine.When solo mining, the value of a share is zero unless it's a block, but the value share/difficulty as a %, is still correct to determine expected results.

","[
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]"
9435,"Date: 2015-10
Topic: S4 xoooooo  ooooooo.....
### Original post:
Hey,I seem to be having a problem with my S4. Here is what miner status is showing. Can anyone tell me what exactly the problem might be? It is still giving me a decent hash rate but fluctuates between 1750 and 1950.Thanks!

### Reply 1:
You may try restarting it after shutting it down for a 1/2 hour or so and see if the x's go away. If it's dirty inside the case you may blow it off so it's able to cool properly. While the case is off make sure (Unplug First) the connections are all tight and the boards are securely tightened down as well as the power connectors.* If it's the stock power supply that is usually the culprit, it's under powered and not supplying enough juice to the hashing boards. Do you have a power meter to see if it's not pulling close to the 1400w it's rated. Mine wouldn't pull more than a 1000w from the wall and appeared that one board was bad. New power supply plugged in resolved what I thought was a bad board.

### Reply 2:
I was lucky and never hit the bad S4 PSU. But sadly a lot hit them with S4's. Testing it is not a bad idea at all. My suggestion on cleaning is if you have owned it for a while it's not a bad idea at all. When I sold my S4's they did not look bad on outside, but I opened it and lot of dust in a not to dusty area. I would turn off as suggested and open it up look fan's first as they tend to hold dust. You can unscrew metal cover if really bad and get to blades easy. Then focus on heat sinks on blades you will need a can of air for sure on this project.If nothing else you have a nice clean S4 after it.

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  },
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    ""hardware_name"": ""power supply"",
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  },
  {
    ""hardware_name"": ""hashing boards"",
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    ""hardware_name"": ""power connectors"",
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    ""hardware_name"": ""power meter"",
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14113,"Date: 2011-06
Topic: Mining pools cooperation: Global block work partitioning!
### Original post:
Seeing that 80% of all hashing power rests within ~5-6 pools, I am pondering the issue of waste. Every pool is basically taking the next block and attempting to spread the partition the work required to solve it to it's connected workers. This way, there is no overlapping redundancy between the workers. Would the pool operators agree to have a common master getwork() controller that partitions all available work between pools whom then partition it spread across all workers? Is it possible or it's just that any worker attempts to create a block with a different set of included transactions all the time, so there are no actually duplicate hash calculations across the network?

### Reply 1:
This.No worker anywhere is trying to do the exact same problem as anybody else.

### Reply 2:
So in reality there are workers that duplicate parts of another worker's work?

### Reply 3:
I feel like an idiot responding to this at all as this has been addressed at least dozens, if not hundreds of times before on these forums but...There is NO duplication of work. None at all. Every single worker is already working on it's own unique little piece of the puzzle.Also: why is everyone always trying to find some way that centralizing everything would make it ""better""? All of bitcoin's strengths are in it being decentralized and peer-to-peer.

### Reply 4:
So then mining pools are a bad idea, right?

",[]
18604,"Date: 2014-01
Topic: Two computers mining into the same offline wallet?
### Original post:
I would like to have an offline wallet with Bitcoin Armory on my old computer, and use my other old computer as a 24/7 miner. Further, I would like to mine on my current computer when I am not using it for anything else. I want both of my miners to be able to deposit and withdrawal BTCs to the offline wallet. How would I set this up? I feel like it should be as easy as importing the watching-only wallet onto both computers; is this correct?

### Reply 1:
You can deposit into both wallets just fine. I have not used bitcoin armory, but with bitcoin-qt client there are hidden addresses created when you send BTC from the wallet. Something to be aware of. It's possible to lose BTC. I think you may be ok though with BA. Maybe post this question to the armory thread to be sure? <link>

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    ""hardware_name"": ""other old computer as a 24/7 miner"",
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  },
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    ""hardware_name"": ""current computer"",
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24076,"Date: 2023-01
Topic: Issue with Blockheader from Stratum Data
### Original post:
A better place to ask this in in the Bitcoin Technical Support area of the Forum. This area is mainly for hardware support, not coding.

### Reply 1:
Hey heyI'm writing a python script to take stratum tcp messages recorded through a mining proxy to reconstruct blockheaders and verify the miners' work. Documentation seems fairly sparse and at times conflicting. From an initial 'mining.subscribe' response, we can gather the ExtraNonce1 (or from a later <truncated> a 'mining.notify' job specification, we can gather the version, previous hash, time, and nBits towards the blockheader, additionally we can gather both the coinbase bits and the merkle branches.From a <truncated> we can gather the extraNonce2 and the nonce.We can build the merkle root applying the following by first constructing the <truncated> = <truncated> then the following: Code:def <truncated> coinbase_hash_bin): merkle_root = coinbase_hash_bin for h in merkle_branch: #merkle_root = <truncated> + <truncated> merkle_root = <truncated> + <truncated> return <truncated> here is where things seem to get fuzzy, as <link> gives a different order for the blockheader than say <link> where ricmoo has the nbits before the ntime, whilst the latter (and most other documentation) has nbits after ntime.I can build a simple byte reversal and swap for the merkel_root via:Code:def sw<rest of post truncated>

","[
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2728,"Date: 2014-01
Topic: [IN STOCK] ASICMiner Cubes 30gh-38gh/s - USA .61 BTC - 4+ orders Free Shipping
### Original post:
Price match to .61. Orders placed before 2PM CST tomorrow will be shipped tomorrow.

### Reply 1:
You mean today? (Wednesday). 3am is Wednesday.

### Reply 2:
Whoops, yeh late night.. All orders up to this point have been shipped. Currently out of low clock only units.

### Reply 3:
So the high clocks run at 38GH? Can you merge mine with these? Is anyone successfully merge mining with these units? Thanks.

### Reply 4:
Yes you can, the only coin that was modified for merge mining and still worth mining today is namecoin. You can mine any sha256 based coin with a cube.Also, I've lowered prices to match other distributors. 4+ units still gets free shipping.

### Reply 5:
You can actually mine like 7 alt coins alongside bitcoin, via merge mining which means they're free so why would I only wanna only merge mine NameCoin. NameCoin last year was worth only one-tenth of 1 penny so I wouldn't dismiss merge mining any coin. Besides, I'm after iXcoin more than anything and that's merge mineable so I'm wondering if anyone else has been merge mining anything besides NameCoin.Thanks for your feedback, I may be putting an order in soon. At the moment I'm broke but I'm thinking of selling some coins - mainly some alts which aren't going anywhere.

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14870,"Date: 2014-01
Topic: Question about cloudhashing.com
### Original post:
can you mine any SHA 256 coin with cloudhashing or is it only Bitcoin? Please respond.

### Reply 1:
That is written on Homepage, bitcoin only.In cloud you can change coins only with CPU cloud coins mining.Or renting some GPU rig.

### Reply 2:
I am not aware of any exchanges that trade in alt-coin mining. Hole in the market?

### Reply 3:
Screw cloudhashing.com I just got done filing an Fraud report with the UK Internet Fraud Dept. They fucked me out of a 2 year, 20 GH, agreement for $999They refuse to get my contract up and running and refuse to refund me. I have sent over 100 emails and they always have a bullshit response.

","[
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6992,"Date: 2014-01
Topic: Looking for sound advice on 2TH/s machines - Black Arrow vs CoinTerra
### Original post:
Hi guys, first, I'm sure you have your own opinions about companies outside of the two mentioned in the topic, but I would like to focus on those two specifically in this post (dealing with house money here, so I'd like to at least see a ROI before the year is out). The price for both units specified is ~$6,100 w/ shipping and handling. Both expected to arrive in May if ordered today (so maybe I will be lucky to make 1 BTC a week by then; hopefully 10 days at most).Thanks so much guys, I only have a few days to decide who I'm sending the wire transfer out to so if you have anything useful that you think I should know, please let me have it! Assuming this all works out, I might take a small percent (5% - 10%) and try and play the exchange market, but you better believe I'm sitting on any coins I make until they are worth 5 digits or dust =p.

### Reply 1:
just remember this, they are all scams till proof of working hardware...

### Reply 2:
Sad but true.

### Reply 3:
Cointerra should ship soon, so if you can wait a few days you might have proof of an existing, actually working device.

### Reply 4:
I think those are two of the best bets. I seriously doubt either is a scam with considerable engineering info and photos coming out of both companies. Each seems to have personnel that know the industry and have the necessary backgrounds. I came down to those two also, but back in December and for me it was down to which one I thought I'd get ahold of first. Cointerra was selling April batches at the time, with BA still at late Feb (which I took). If there is a difference in when you'd receive it, I'd go by that. If not... hard to say. We know that Cointerra is running a little behind, but they also seem to be making good (though that's going to put more machines in line in front of you). It may be wishful thinking, but I'm hoping that BA being based in China has the local facilities and talent to produce machines at a good clip once they have things ready. If you do go the BA route, I'd recommend using <link> I think machines will likely arrive quicker as they will all clear customs together.Good luck!

### Reply 5:
Late February or Early March for BA for those who have already ordered probably March or later if you order today?Cointerra is late so not sure when if it all you would get a rig if you ordered today?---That is the kicker you are ordering today or in the next week or so. So given that you need to check on when delivery for a new order would be and then check whether you think it is worth it to receive the product then as opposed to now. Neither are shipping this month if you order today if I am not mistaken.

### Reply 6:
Honestly... and this has nothing to do with my sig, lol... I'd spend a bit more money and get a KNC Neptune. Even better, I'd spend my money on hashing power that I can get immediately like Bitfury/MBP or AntMiner. In fact, I have done all of the above.

### Reply 7:
I have to respect KNC for their work, but I think I'd actually buy 1 of each of the 2TH machines mentioned before that. That sounds harsh but it has to do with the fact that no matter who I go with, I will be pushed into Q2 (I don't want to think about mining in the summer x.x) and while I'm incredibly impressed regarding their ability to get down to 20nm already, there isn't as much data to go on. Others could be deciding to post their best guesses and KnC doesn't want to post more information until they feel ready, but it's all about what I have to work with now. Also since you are actively mining, no matter what I buy, I'm sure you will end up with more coins than me if we did a reset from now until the end of the year =p.Good luck to you as well and thank you for a US reseller link. Heh my freelance projects don't give me the bankroll to invest in becoming a reseller, however it would solve my problem (sell 10 units and the reseller gets 1 for free =p).I just crunched the numbers and assuming a linear increase in the difficulty rate of 30% and with the assumed start date of May 15th (both of which I hope don't occur but are very possible) with a block being solved every 10mins <rest of post truncated>

### Reply 8:
lol after all of that and I think I might be going with the 400GH/s mining kit from MegaBigPower since I could be hashing by the weekend, oh well, if it was easy to win in the Bitcoin game everyone would be doing it!

### Reply 9:
One thing to consider with comparing Cointerra and Black arrow with their 2Th mining rigs, The Prospero-X3 (Black Arrows Offering) is 2 x 4u shells 1Th in each. a consideration for data centres and people mining from home alike.G

### Reply 10:
Better to buy something off the shelf today then wait months. If the hashrate keeps doubling every month then a 1TH/s miner in 4 months is equivalent to 1/(24) = 62Gh/s today, in terms of profitability. I have no idea why people w<rest of thread truncated>
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20592,"Date: 2015-08
Topic: Need help setting up my first bitcoin rig.
### Original post:
Now, I have everything prepared, and I get quite paranoid about how to set it up, so I came to this community for help.I know this is how I start setting it up on the Raspberry Pi:apt-get update apt-get upgrade apt-get install libusb-1.0-0-dev libusb-1.0-0 <truncated> libncurses5-dev libudev-dev autoconf libtool git clone <link> ./autogen.sh ./configure --enable-bitfury make && make installBut once that's all done how do I get my 10 yellow jacket USB miners working on the Raspberry pi? What will the command be to get all the miners to work at once?

### Reply 1:
Try a few at a time. Chances of a powered hub being able to run 10 of them is very slim. It's just a lot of power and most hubs dont have it.Honestly you might look at ebaying them and getting some gekkoscience stick miners. Just a lot more modern stick miner.

### Reply 2:
I'm not talking about having the power to get them all running at once, I'm looking what command do I have to use on the raspberry pi to get them all to work.

### Reply 3:
I would test with 1 at first just to make sure it works then move from there adding and see what max is. But take a look here - <link> that post seems to have been able to work for someone else. Best of luck.

### Reply 4:
Those commands are exactly the same as the ones I have above, I want to know the command that actually runs cgminer with 10 yellow jackets.

### Reply 5:
Have you tried just one with it? Get one working then add a second... third... etc. You will find out limit that way.

### Reply 6:
Ah, as I said I get paranoid about setting it up. I want to know the command for starting up cgminer with 1, and how to add more. Also, do I need to create a config file like it shows in some tutorials? They were quite old tutorials though.

### Reply 7:
You can get the command from about any pool you join... That way everything is filled in correctly for the pool you're going to use...About using 10 miners: your cgminer should detect any new miners you plug in, so just plug in one, start cgminer, plug in a second one,.... Keep on doing this untill you blow your powered hub

### Reply 8:
The pool will tell me what command I need to use for the raspberry pi to boot up cgminer? Does slush's pool supply that command? Also, I used to mine back in 2011 so I was used to you having to run a command telling cgminer what USB miners you plug in, I didn't realise the raspberry pi cgminer now detects them, how neat. (If slush's pool does supply the command for the raspberry pi, do you mind posting it in the thread? So I have it all on one page)

### Reply 9:
you've compiled cgminer for the correct usbminer... I run a couple u2's at home, and i just use the command i find on the pool's ""getting started"" page... works like a charm...At the moment, i don't use slush's pool... Don't remember where i put my password either... But pools usually have a pretty clear page where they put that stuff EDIT: it doesn't matter if you use a PC, AIX server, raspberry pi... The command to start up the mining software is always the same , the way you have to compile it differs tough...

### Reply 10:
Well, on asicrunners website (the site I ordered the yellow jackets from) they provided instructions to install the yellow jacket cgminer, so that's fine. Also we don't need to create a config file anymore? I have been living under a rock for quite some time then.

### Reply 11:
If i remember correctly, you can use them both ways... Start them from the command line, with all the necessary parameters or make a config file and start cgminer without parameters....

### Reply 12:
To be honest, I prefer without the config file, so if you look at the github link I provided in the first post for the cgminer, that version will auto detect the USB miners?

### Reply 13:
It should detect it yes. But a lot of the info is old so this could be old.The reason multiple are telling you go with 1 and then go up. Your powered hub will only do so many, raspberry pi has limitations aswell. So start just 1 get it working. Stop add another it should detect it. Eventually you will find the limit I doubt your hub will do all 10 on power. Finding this perfect number is the hard part.What hub are you using we can tell more if you share that?

### Reply 14:
I am using this hub: <link>

### Reply 15:
I am using A 49 PORT HUB and have 20 of the Yellow jackets working.. just run sudo ./cgminer -o for your site to mine -u your user name - p password Then once you are in hit S - W and hit return.if you have to reboot the raspberry just go to cd cgminer or the name of your directory and type sudo ./cgminer once you saved the parameters that are working.

### Reply 16:
I managed to get it working, my hub can handle 7 miners, so its ok, Ill need to buy another hub though.

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16859,"Date: 2011-07
Topic: Problem with Ubuntu 11 autostart, please help me out here...
### Original post:
You could try to add a & at the end of the commands, that makes it startin the background, seems to do the trick on my ubuntu netbook <truncated> --title gpu.overclock --command ""sh <truncated> --title gpu.overclock --command ""sh <truncated> &and so on.

### Reply 1:
after the "" ? or before?before didn't worked

### Reply 2:
wow, it worked... thanks man,...bur now I have the following <truncated> (most recent call last): File ""./poclbm.py"", line 3, in <module> from BitcoinMiner import * File <truncated> line 11, in <module> import pyopencl as cl File <truncated> line 3, in <module> import pyopencl._cl as _clImportError: libOpenCL.so.1: cannot open shared object file: No such file or directorypoclbm always gives this error if not executed by the terminal (open terminal, enter the folder, execute file)

### Reply 3:
nvm, solved =p

","[
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8930,"Date: 2015-03
Topic: ANTMINER S5: 1155GH(+OverClock Potential), Jan 12th Shipping $0.28/GH & 0.51W/GH
### Original post:
Is it ok/safe to run a single unit using 3 cables that have double 6 pins? 8 pin to dual 6 pin. I was hoping I could run 1 dedicated cable to each blade, then use the 3rd cable and split it between both blades. The Corsair CM850 only comes with 3 cables. Thoughts?Strato

### Reply 1:
Should work fine as your still using a single rail PSU.

### Reply 2:
Hey everyone,So Bitmain was very cool about issuing me coupons for the 24 AntMiners that I purchased off of Amazon before the price drop. I haven't decided if I'm going to use them all, or perhaps just a few Still need to get a number of our first delivery up and running.So that said, I may be interested in either trading or selling a bunch of the coupons -the coupons are good through February 4, and our valued at $45.00. Just a heads up, you can only use one coupon per S5.Shoot me a private message if there is any interest in working out a deal on some of these.Cheers! Strato

### Reply 3:
Ok I am lost... anyone have any ideas?I ordered 30 of these... but they have 4 black wires. The connector has no markings... I have no data sheet. I have no clue which goes to the S5 Red White Black Blue. <link> thoughts?Strato

### Reply 4:
The link in the overclockers thread (that you gave) has a link to the datasheet (didn't test it), and an explanation of the wiring .... or did I miss something?

### Reply 5:
Correct, will work fine. All Corsair PSUs are single rail apart from the AXi's which are toggle-able single-multi.

### Reply 6:
Data sheet for the fan can be found here. Look on page 5 for wiring info:Pin 1: Positive [12V]Pin 2: PWM control INPin 3: RPM reporting OUTPin 4: NegativeThat's going to need rewiring to fit on S5s as normal 4 pin fan headers are:Pin 1: NegativePin 2: Positive [12V]Pin 3: RPM reporting OUTPin 4: PWM control INMight be worth sending back.

### Reply 7:
You need to convert to 4Pin with PWM small Molex from the pinout on this diagram:<link> <link>

### Reply 8:
Dogie, I think you have pin 2 & 3 reversed there on the top.

### Reply 9:
No, according to the linked forum post the data sheet is just explaining those two pins badly and so they're 'reversed' from the labels.

### Reply 10:
I also bought 2 on Amazon but did not get coupons for those. What is the procedure for obtaining them? I could really use them as I'm about to order 4 more direct from Bitmain.

### Reply 11:
Ditto

### Reply 12:
Leave Amazon Feedback and send Bitmain a message via Amazon.

### Reply 13:
I see that the pinout information has been provided already so I can tell you that I used a scribe (pin will work too) to push in the locking tab to remove the pin the lifted it a little to lock in again. The locking tab is accessed in the rectangular opening of the connector. If you are uneasy about the change you can always try it out first to a power supply before connecting it to your miner. You will be very happy with these fans once you install them.

### Reply 14:
It is better to buy one Corsair Extra PCE-i cable separately . My Corsair RM850 works with 4 PCI-E and RM850 comes similarly with only 3 PCI-E cables.I found a link to ebay here <link>

### Reply 15:
Nice table, thanks.I noticed that a couple of my S5 ""do not like"" 318.25 when modified with much less loud Noctua 3000 PWM fan. Temp goes paradoxically higher than at 325, so I stick with 325 for now (can't stand the stock fan).Will try some other fans for overclocking later in the week.

### Reply 16:
That could be, I tested 350M, 337.5M, 325M and 312.5M and filled in the in between tables from those.

### Reply 17:
Here's some info. for those trying to dial in the right power to Gh/s ratio for the S5 that I've found through testing. The ratio is pretty linear for every step down in frequency from 350M to 312.5M, it's about 10 watts decrease in power draw and about 20Gh/s reduction.freq. (avg.) (at 230v at the wall)350M = 1,150Gh/s = 590watts <truncated> = 1,130Gh/s = 580watts (assumed)337.5M = 1,110Gh/s = 570watts (tested)331.25M = 1,090Gh/s = 560watts (assumed)325M = 1,070Gh/s = 550watts (tested)318.25M = 1,050Gh/s = 540watts (assumed)312.5M = 1,030Gh/s = 530watts (tested)So you can conclude that if you've got a 1,000watt power supply and you want to stay in specs. that you'll choose 293.75M for 2 S5's (281.25M or 287.5M for 110v) or if you want to keep it to a specific wattage use for $ reasons.

### Reply 18:
has anyone tried these fans on the s5 im just worried about the noise? <link>

### Reply 19:
Hello, I have a table for 12V operation. Seems that power draw is linear. Higher speed means better W/Gh ratio. All measurements were tested at wall without FAN.PSU: Fortron Raider 750W100MHz/175W = 0.53W/Gh125MHz/212W = 0.51W/Gh150MHz/250W = 0.51W/Gh175MHz/285W = 0.49W/Gh200MHz/320W = 0.48W/Gh225MHz/358W = 0.48W/Gh250MHz/397W = 0.48W/Gh275MHz/430W = 0.47W/Gh300MHz/465W = 0.47W/Gh325MHz/507W = 0<rest of thread truncated>
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  {
    ""hardware_name"": ""Corsair CM850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Corsair PSUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Corsair Extra PCE-i cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Corsair RM850"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Noctua 3000 PWM fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Fortron Raider 750W"",
    ""hardware_is_owned"": true
  }
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20669,"Date: 2015-10
Topic: Yoli Evo - Problems
### Original post:
Hello!I have a Yoli Evo which I purchased off a guy I just kind of ran into... Anyway, I end up with this Yoli Evo which I wired up and connected to my rig and when I attempt to spool it up with CGMiner I get a bunch of these messages:Is it toast?Thank You!

### Reply 1:
Hello again.This is pretty much the same thing you asked with the BFL monarch. And possibly the same answer. What does pool side says with your hashrate? Its normal for ASIC to get HW's.Usually you don't see so many in a row however. But it says you have quite a bit of accepted share too.So what is the hashrate accepted on the pool side?

### Reply 2:
nice work people,today I learn some new stuff

### Reply 3:
Took me a few but I managed to resolve this by switching pools and software to cgminer. It seems that most of my hardware with these issues seem to do this for like ten minutes or so after switching pools then it just leveled out and speed went back to normal etc.

","[
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    ""hardware_name"": ""BFL monarch"",
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  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": true
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14394,"Date: 2011-07
Topic: Why has the network jumper to 14 terahashes?
### Original post:
The only reason I can think is that Cisco analysis published on their blog?Any other reason do you think?- I hope it goes down again. I saw it jump up to that at the last difficulty level and it's been hovering around 11 since consistently.

### Reply 1:
It called variance. Pools were lucky and solved 10 extra blocks in the last 24 hours. Network is still at 11.5 Th, expected to hit 12 Th in a week.

### Reply 2:
Aaaah ok where can you check that the pools solved those extra blocks. Also could you let me know where you were able to gather your expectation from? I would like to be able to estimate as well.Thanks a mill.

### Reply 3:
Gribble is still showing us more or less on par to where we've been for this round:[11:13] <@gribble> Current Blocks: 136089 | Current Difficulty: 1563027.9961162 | Next Difficulty At Block: 137087 | Next Difficulty In: 998 blocks | Next Difficulty In About: 6 days, 15 hours, 24 minutes, and 10 seconds | Next Difficulty Estimate: <truncated> was a sight jump the last day or two but nothing awful imho.

### Reply 4:
""Why has the network jumper to 14 terahashes?""well i see ppl still discovering BTC daily and joining thier Mhash and Ghahs/s to the networkthere are even still ppl buying hardware to mine on. Depending on thier circumstances it could still be viable to mine. despite the in creasing difficulty I dont expect the hashrate to drop in the neaar future others will have different opinions, I can only go on what i see daily at my pool and around the forums /netwrok

### Reply 5:
<truncated> at 15G now RUN!!

### Reply 6:
If we were steadily chugging along at ~150 blocks/day, an extra 10 isn't going to cause the network to jump nearly 30% from variance.

### Reply 7:
It's the Moore's law of Bitcoin. I don't think price matters, nothing will stop this law.

### Reply 8:
Mousepotato agreed.but where do you see this 30% jump in the network, maybe I'm missing something.

### Reply 9:
Last I looked (yesterday) it was around 11.8 TH/s. Right now it's at about 15 TH/s. It could be a combination of my bad memory and even worse math skills, but I guesstimate that's close to a 30% jump.

### Reply 10:
nevermind, you guys are probably watching <truncated> ever questioned how that number is calculated at their site? I know their formula is wrong or at least misleading. That number will show a big drop in the next 12 to 24 hours.Network is still at 11.5 Th, expected to hit 12 Th in a week.

### Reply 11:
I have a hard time believe it's just variance/luck. It was a *very large* spike.

### Reply 12:
Yeah, I was referring to Bitcoincharts. I've always had my doubts about the accuracy of the network numbers (the exchange rate numbers are pretty accurate though) since they've often been off by a TH or two with regard to Deepbit's hash power.

### Reply 13:
Botnets?

### Reply 14:
its well over 16thash now, dot bit is showing a ""instant"" difficulty of 2.2xx.xxx, this does not seems to be a peak.

### Reply 15:
There's no way this increase is variance, some serious hardware is coming online...

### Reply 16:
I think it's too big of a swing to be simple ""luck"".What is going on? Did some large cluster just go online? 1 or 2 Thash is a lot of 5830's.

### Reply 17:
And I don't think the SIPA charts are pulling figures out of thin air, either. Their figures have matched up quite well with eventual difficulty increases.You can see there's an obvious change between the right-hand side of the chart (today) and a little bit to the left of it, where it's often ""below the line"".Ain't nobody THAT lucky!

### Reply 18:
Mining isn't as unprofitable as some people seem to claim.

### Reply 19:
I think we have a hidden ""big player"" in bitcoin mining... It has a lot of GH/s power and is turning it on just before difficulty increase/decrease to make mining more unprofitable. That way it knocks out small miners and will free its mining process in the future.What do you mean about this?

### Reply 20:
22 blocks in the last 2 hours blame JPMorgan

### Reply 21:
<link> was posted today, by the look of the replies quite a few people there didn't know about bitcoins before. If any forum has the hardware to make an increase like that it would be them.

### Reply 22:
I'm really pissed up my 8gh/s rig isn't going to be turned on till the weekend.Is there not some way to find out where all these power is coming from? Is this from other or one of the pools?

### Reply 23:
Nearly 16th now Will loads of small miners get out of the game and bring it down again? What percentage of the network would be small miners? ie. 1 to 1.5 gighash.

### Reply 24:
Yeah it was me. I got sick of trying to play Crysis 2 on high settings, so I went back to mining for Bitcoins.

### Reply 25:
buncha reactionaries... geez. Even a picture posted in this very thread of the spiky nature of the current entry. If in 12 or 24 hours the rate stays this high it might be<rest of thread truncated>
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13142,"Date: 2014-06
Topic: HELP
### Original post:
I have a 2010 Macbook Pro with NVIDIA GeForce 320M 256MB, I started mining yesterday on slush's pool and I had no bitcoin it is marked 1.7 mhash / s I want to know if the problem is with my graphics card ! and solutions please.

### Reply 1:
Mining bitcoin with GPUs died a long time ago.Watch:<link>

### Reply 2:
GPU mining bitcoin and other sha256 is dead/useless.Try searching for a x11 cudaminer, so u can mine x11 currencies, u can later sell them for btc/ltc.cheers

### Reply 3:
hi,I suggest you try mining scrypt or X11I'm also the NVIDIA GT 520, and using cudaminer as mining applications,to find a nice pool that you can visit to various sources of information, and also find info-coin you want to mine in order to gain an advantage, I think 1.7 MH / s speed is pretty good.good luck frien

### Reply 4:
Mining with a laptop is probably not a good idea.You'll most likely burn it, and in exchange for that you'll get at best 50/week.If you're interested in mining, you should buy an ASIC.

### Reply 5:
That's 1.7 MH/s for Sha256. It would probably translate to 10 kh/s when mining scrypt.

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    ""hardware_name"": ""NVIDIA GT 520"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""ASIC"",
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]"
16544,"Date: 2023-07
Topic: Need a trust Site Cloud Mining
### Original post:
I want to start a cloud mining any cryptocurrency

### Reply 1:
I only know 3 of them Binance, Nicehash, and miningrigrentals are currently trusted sites who offer renting hashrate/Cloud mining.Other sites are most likely scams and even they are trusted all sites that I mention above it is still risky to invest and rent some hash rate compared to buying your own miner.

### Reply 2:
I think I know some of these sites like genesis mining, hashflare and nicehash. Genesis mining offers mining contracts for various cryptocurrencies such as bitcoins, ethereum, litecoin , and more. You can choose between different mining plans with varying hash rates and durations.<link> Hashflare is another cloudmining platform also offers mining contracts for various cryptocurrencies including also bitcoin, ethereum and i think zcash is included. you can also purchase hashpower contracts for fixed duration and mine cryptocurrencies without having purchse and maintain their own mining hardware.<link> Nicehash is a marketplace that connects buyers and sellers of hashing power. You can rent out their own mining hardware or purchase hashpower from other user to mine cryptocurrencies. Nicehash also supports a wide range of cryptocurrencies and algorithms, and you can choose between different mining contracts with varying hash rates and durations.<link> from a friend that while these platforms are popular and reputable, cloud mining can be a risky venture and there is no guarantee of profits. ; )

### Reply 3:
Nicehash will be difficult even for me to calculate the real profit from renting video cards or ASICs, but I think that it will be more profitable to buy cryptocurrency on the exchange for this price. Genesis-mining has not rented its ASICs for 3 years already.

### Reply 4:
I don't ever recommend cloud mining and instead of that, just simply buy and hold BTC and I am sure that will be more profitable instead of worrying about hardware and electricity costs.But still, if you are really into it, I would recommend Binance Cloud Mining service.Official Website: <link> am sure they started providing this service in 2023, which wasn't available earlier. Binance being the biggest Crypto exchange should be the most trusted brand out there for any crypto related service be it mining or staking.There are 2 plans available:1. 90 Days duration starting from $5.94 / Static Revenue: 78.46%2. 60 Days duration starting from $4.38 / Static Revenue: 16.00%I am not sure what exactly they mean by static revenue as I see a huge difference in both of these plans and they both are sold out as of now. Maybe there is an option to get an email or alert if you are actually interested in these. I would still recommend you to buy and stake rather than minining on cloud. Good Luck!

### Reply 5:
It is just a prediction based on previous historical data if their claim is to be trusted[1]. Basically just a number for promotional material. Don't use them to predict your earnings. Not really surprising in my opinion. If they claim it is a guaranteed reward I'd be worried they're running a ponzi instead.That being said, I'd advise OP to think twice before you use your coins and lock them on a third-party platform where you can't even see their daily operation. Who knows, maybe they are not mining and are using your funds to do insider trading or something similar. Even if they do mine, they'll always earn the bigger share while you risk a lot of your coins.[1] <link>

### Reply 6:
The bitter truth is Nicehash cloud mining is not profitable anymore, it was fairly good in 2018 but today it's not anymore, I still rent hash power today basically for newly released altcoins, not Bitcoin, I can see that the service is still running, I don't understand how they can manage to stay in cloud mining business, maybe Nicehash have a massive solar energy plantation who knows? Because the main reason why this is less profitable is the electricity bill to run the miners, unless the cloud mining is Ponzi like so many cloud mining companies in 2017/2018.Some of them end up scamming people while some announced that they are ready to close down the business because it's not profitable anymore. If a company is running a cloud mining service today, it's either they are scammer who doesn't have any mining equipment or they have wind or solar energy with incredible lithium backup to run the whole setup. Be careful, there is a 95% chance that every cloud mining is a scam, they never have any asic miners or any mining farm.

### Reply 7:
Did Binance offer cloud services ? I just hear it but nicehash and miningrigrental is legit and I have been using it couple of times.and OP most of the cloud mining out there is scam believe me sometimes they make their website look tempting by offering free hash rate and discount but you can use your logic that the price of electricity is high If i have the company i would use money<rest of thread truncated>
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    ""hardware_name"": ""mining hardware"",
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11153,"Date: 2022-05
Topic: Antminer S17+ Hashboards won't work together but work individually?
### Original post:
Hi, Looking for some help or ideas please, Hashboards work when tested individually and when tested in pairs, but will not work when all 3 three are connected?Real head-scratcher, last few lines of Kernel log below:2022-05-16 17:17:45 <truncated> chain = 0, voltage = 21.1137802022-05-16 17:17:46 <truncated> chain = 1, voltage = 21.1432192022-05-16 17:17:47 <truncated> chain = 2, voltage = 21.2423852022-05-16 17:17:47 <truncated> average_voltage = 21.1664612022-05-16 17:17:47 <truncated> target_vol = 21.00, actural_vol = 21.17, check voltage passed.2022-05-16 17:17:47 uart.c:72:set_baud: set fpga_baud to 1152002022-05-16 17:17:59 <truncated> Chain[0]: find 65 asic, times 02022-05-16 17:18:10 <truncated> Chain[1]: find 65 asic, times 02022-05-16 17:18:21 <truncated> Chain[2]: find 65 asic, times 02022-05-16 17:18:29 <truncated> set uart relay to 0x3300032022-05-16 17:18:29 <truncated> chain[0]: set order clock, stragegy 32022-05-16 17:18:29 <truncated> chain[1]: set order clock, stragegy 32022-05-16 17:18:29 <truncated> chain[2]: set order clock, stragegy 32022-05-16 17:18:30 <truncated> core_data = 0x342022-05-16 17:18:30 <truncated> freq 50 clock_counter_limit 62022-05-16 17:18:30 <rest of post truncated>

### Reply 1:
Stock Bitmain firmware stores the chip tuning information along with the voltage it was tuned to run at in an eeprom on each hashboard. If the voltages are different between the boards, the firmware will not run.You can either buy a tool that will let you program the eeprom, or run aftermarket firmware like Brains or Vnish, both of which ignore all the data stored in the hashboard.

### Reply 2:
Does it seem that the two or all hashboard are replacements?You can't just able to run them without dumping the EEPROM from the original hashboard and flashing it to that replacement hashboard. You need a tool called Hashboard code editor to fix this issue read more about this below- <link>

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20138,"Date: 2015-01
Topic: BITMAIN Antminer S1 cgminer updating and firmware
### Original post:
Is their any new support for newer firmware and updated cgminer or even other mining software integration?

### Reply 1:
<link>

### Reply 2:
Thank you for this.

### Reply 3:
Nothing new on their in months. Have since updated cgminer within it using another guide somewhere on Bitcointalk however seems s1 have been faded out for support form what bitmain said about it no longer supporting s1 development and that only s2 to 5 will have supported updates. Only cgminer seems to be getting updated but I guess that is enough for me to update when I am mining with s1 when its worth a new coin sticking on for a little while.

","[
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    ""hardware_name"": ""cgminer"",
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  },
  {
    ""hardware_name"": ""s2 to 5"",
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]"
19214,"Date: 2014-04
Topic: why does BFG hashrate die off after a while?
### Original post:
It should be running at 23 GH but instead it looks like this:It will start and work fine for maybe 90 minutes but then it dies off and all the erupters turn back on but this is my screen. Any suggestions would be highly appreciated.

### Reply 1:
Did it do this eversince with this particular mining setup or onl since an update to BFG or the miners?My first guess would be a problem regarding the drivers or windows handling so many USB devices.Try setting the display options of BFG to be more verbose and enable logging so that BFg tells ou more about what's going on that could help you get to the ground of it.

### Reply 2:
never worked right with windows so I moved to ubuntu - it was okay for a little while but I wanted to consolidate it with my scrypt rig so now I have this version of bfgminer running in the background - everything boots up and runs fine for maybe 40-70 minutes then it dies off. doesnt give a communication error or driver error it just says pool stratum pool requests work update

### Reply 3:
Hmm ok I am out of ideas then. Haven't done stuff on linux in years so I am kind of out of the loop as far as that goes. If BFGMiner doesn't send any errors my next very wild guesses would be that something's wrong with the hardware setup: For instance is the USB Hub's power supply sufficient to run that many miners? Do the sticks get too hot?I guess you'll have to go through a lot of trial and error unless someone in the forums experienced similar problems and has a solution for you.Sorry.I hope you can get help and get it running.

### Reply 4:
It's probably your USB hub. Looks like the USB miners all fail at the same time and stop mining. I'm pretty sure your first hashrate is frozen. The second is usually more accurate, and 3rd one is actual hashrate based on shares submitted.

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    ""hardware_name"": ""BFG"",
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    ""hardware_name"": ""erupters"",
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  },
  {
    ""hardware_name"": ""USB devices"",
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    ""hardware_name"": ""scrypt rig"",
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    ""hardware_name"": ""USB Hub"",
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3835,"Date: 2015-03
Topic: ASICMiner Tube Group Buy #2
### Original post:
Hello, per friedcat's post here: <link> - CLOSEDDO NOT GET SCAMMED I DO NOT PM PAYMENT ADDRESSES INDIVIDUALLY., read: <link> IS POSTED BELOW.This is a domestic group buy for those of you who may want to order less than 10 units. (friedcat will accept orders of 10+ directly, contact user phasebird)You will need to email me a label to <truncated> 1 Tube requires 1 Large Priority flat rate box & 1 Medium Flat Rate priority Box. 2 Tubes need 3 Large Priority flat rate boxes. When you email the label, please sign the tracking numbers and include signature of the signed message. example:-----BEGIN BITCOIN SIGNED <truncated> <truncated> BITCOIN SIGNED MESSAGE-----Payment addy: <truncated> 800-850GH/s per full set.Power consumption: ~0.9 J/GH board-wise. Gets higher along with ambient temperature. At the wall power draw depends on PSU efficiency.Size: 25cmx12cmx12cm per full set.Weight: 11.5 pounds (5.2kg) per full set. Figure 12.5 packaged in shipping boxThe hashing units are driven by Ethernet controllers. Each Ethernet controller can run up to 32 units.Price:1.04 btc per unitI have some spare Pis on hand. anyone who wishes to add a Pi to their order, let me know.(I recommend buying 1.04<rest of post truncated>

### Reply 1:
Just got 4 Tubes. in hand, ready to ship. if interested, PM me. payment would go to address posted on OP of this thread so don't fall for scammers

### Reply 2:
2 tubes are gone. 2 remain

### Reply 3:
Tubes arrived today.Everything perfect, as usual.I cannot say enough good about Canary.An asset to the BTC world.Thank you

### Reply 4:
I've got an extra BE controller if someone is looking for one.Also have a few extra USB interfaces for Prisma's. Tubes may be able to use them and then run cgminer instead of using the BE controller with Tubes. anyone test this?

### Reply 5:
I have and the tube runs great under cgminer. Only thing you need to do is pass --bet-clk 26 to cgminer in-order to set the clock to 270Mhz.

### Reply 6:
Is your hashrate 830gh/s+? On the BE controller my unit hashes fine. On cgminer with --bet-clk 26 I only get 760gh/s average. Canary, how much for a BE controller?

### Reply 7:
Yes. I've found that it takes a few hours before a tube averages out in cgminer. Maybe try a slight overclock with --bet-clk 27?<link>

### Reply 8:
Thanks. For whatever reason, the config file cgminer was loading had ""bet-clk"" saved as 23.

### Reply 9:
Canary, I might take that extra BE controller. 1 out of 2 would not connect to the boards, 1 hashed fine running both tubes for about a month maybe more. After some power cycling from maintenance, I now cannot get it to interface w/ the boards. Apart from re-flashing, changing settings, changing ports, etc. do you have any recommendations to get the boards to connect, or should I get the new controller? I pickup the controller on my network no problem.

### Reply 10:
I just got a seek thermal camera for my android phone, way cool nice toy for my current project. anyway this is the first image i took with it, it's of one of my tubes.

### Reply 11:
Was this group buy resurrected by the previous comment. Probably should be marked as closed in the title.

### Reply 12:
nope, it's been closed per OP:09/12/204: - CLOSED

### Reply 13:
Does anyone have a tube just sitting around gathering dust? I'm interested in getting one more hash board from a tube. Currently have 2 tubes but only 7 hash boards (sent one for rma, but that process is completely stalled). I'm not willing to pay much, but maybe we can work something out and I can help de-clutter your house. Please pm me if interested.

### Reply 14:
I have 1 board from a prisma available. I never powered it on. as-is.

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9594,"Date: 2015-12
Topic: Bitmain shipping policy
### Original post:
Hi all,I would like to know if i can buy from bitmain's site (<link> for delivery in EU.Has anybody that kind of experience?

### Reply 1:
If what ways are you wondering? If you meant import taxes/vat yes you will owe that.That is normally the most common question as far as EU. But yes they ship to EU no issues as far as ordering and being there as far as delivery.

### Reply 2:
Thanks a lot. I am asking because if i want to buy from a reseller i have to pay 2200 + shipping cost<link> i buy it from bitmain, i'll pay 1300+ 23%vat (Greece) = 1600 + shipping costAre my calculations wrong???

### Reply 3:
There was a pretty big drop between Batch 7 and Batch 8 miners. It's possible those re sellers have stock of older higher priced miners, and EU honestly always seems high on miners with VAT/Import.But yes most likely you get a Batch 8 and pay import direct from bitmain without re seller, and it will be cheaper. Your cutting out a middle guy.

### Reply 4:
You mean batch 7 and batch 8??

### Reply 5:
Sorry about that yes mean different batches. Batch 7 was quite a bit higher then batch 8. But it also is faster (and quite possibly more efficient). So there are arguments I can see for a higher price on batch 7. But not to the extent you mentioned above.

### Reply 6:
Batch 9 has even lower price.. 1180.47$ I suppose they want to get rid of all the chips because 16nm is on the way..

### Reply 7:
Thanks for the help my friend..I would appreciate if someone from Eu who has done this could tell me if everything went smoothly. Maybe there are hidden taxes After all i live in Greece!! You have to pay taxes even for pissing...

### Reply 8:
The only tax I had to pay was VAT on delivery to DHL (or Fedex/UPS if you choose them) and 12 flat fee for DHL who acted as a broker (dealt with customs, and supposedly paid upfront VAT for me to the customs).Remember, you pay VAT on item price with shipping added.If the carrier company needs something else than ""Bitcoin miner"" as a description to select a category for the taxes, you can answer they are ""computer accessories"".The latest price drop on batch 8 can easily explain a large part of the price difference you see with EU resellers.They bought S7 when they were over 1600 plus shipping plus VAT.

### Reply 9:
I was actually wondering about UPS vs DHL vs etc. I've had varied tax% when importing to Canada, sometime the miner will cost 6, 7 or 14% taxes. And i saw alleged report of people saying they had no tax to pay with DHL' albeit maybe not with something so pricy.I think i'll make sure that the official-ish value of the miner is under 1600CAD however, as that become labeled as a ""High value import"" and it become a pain, like it does in the US from what i understand.Maybe then its less tax, i don't know.

### Reply 10:
More like they realise that by the time the Batch 9 units ship, they'll have serious competition AND they're going to be impossible to RoI at the older overcharge price even with VERY VERY cheap electric.It does appear that the ""28nm full custom"" generation is going to have a rather short profitable lifetime - the units of that generation came out WAY too close to the halfing, and it looks like the first 14/16nm ""available to the public"" gear should be out before the halfing as well.

### Reply 11:
I'm thinking of waiting and just pick off some S7's for 600-800$ in a month or two. The difficulty is still climbing and the latest S7 batches are inferior in efficiency to the latest, so i don't really see the S7's being worth all that much before long. I hope those who bought at 2k+ got their 1k+ return already.

### Reply 12:
I do not remember so expensive S7 at 2k+ANTMINER S7 BATCH 1 2 Date 2015-08-30 Wrong Shipping Date from Bitmain site 2015-09-28 Real Shipping Date from DHL Shipment picked up Thursday, October 08, 2015 Order Total 3535.09 USDANTMINER S7 BATCH 1 2 Date 2015-08-30 Wrong Shipping Date from Bitmain site 2015-09-21Real Shipping Date Shipment picked up Saturday, October 31, 2015 Order Total 15.967 BTC 1BTC=227,66USD

### Reply 13:
BTC value has went up aswell. Some bought when it had a lower value. So if they waited it would have been better there aswell. But we had no way of knowing going from like 230 to 400 or so would happen that soon. Best bargin was when it hit around 500 that one day as price was still varible I think they got best price (could have changed after drop).Now it seems they do a fixed price in BTC so value of BTC is not near as much of a factor.

","[
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    ""hardware_name"": ""Batch 9"",
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16723,"Date: 2011-06
Topic: What's stoping people from cheating the mining pools?
### Original post:
The cheat is pretty trivial - when you get a ""share"", before you turn it in, see if it matches the current difficulty. If so, claim the 50BTC for yourself. Otherwise, hand it in for the share.Let suckers pay for your solo-mining.I don't see anything in the protocols that would prevent this, and without extensive auditing of every work unit handed out I don't see how the pools could even detect it.

### Reply 1:
You would need to know the exact transactions list that the pool selected, and also have the pool's wallet address as your own. Think you can do it?

### Reply 2:
wouldn't work.the zeroth transaction of a block is the 50 BTC subsidy paid to an address you control. in the hash work the pool is handing out, that address is controlled by the pool operator, not you.and you can't just substitute in your address, as that would result in a completely different hash, which is unlikely to meet the target requirement.

### Reply 3:
Yeah, I figured that out in my car in a ""Duh!"" moment. You know the transactions, since they give you the data, but you don't know the private key for the first transaction. Even if you do report it outside their system, they get the 50btc.Oh well. Back to the drawing board. Lots of resilience to technical cheats, not so much social ones.

### Reply 4:
lulz @ Harik.Let us know once you figured it out, mm'ok? But, props to all mining pool operators out there though... That's quite a bit of work.

",[]
24012,"Date: 2022-08
Topic: Has 0 asics antminer S9
### Original post:
Hello,What are the most common failures when the web interface says ""has 0 asics"" on an antminer S9?This is not a firmware problem. Thank you in advance.

### Reply 1:
I have cards that have less than 63 asics but show me the numbers and others that show me 0 asics. A problem of asics is possible for those with 0?

### Reply 2:
It might be just a connection issue and maybe the ribbon cable is not properly plugged from the control board to the hashboard. Try to replug all cables from PSU and ribbon cable and then try to check it again. It would be better if you can post the whole kernel logs here and maybe there are other reasons why you get 0 ASICs on some hashboard.

### Reply 3:
The most common problem is one ore more chip's from a board are schort circuit.The second, one ore more chips have bad soldering, this can be diagnosed by pushing gently the chip radiators with finger, the 'big' radiators, not the small ones.The third, problem with power supply of each board.

### Reply 4:
Hello, the display of ""has 0 asic"" needs to check whether the voltage of each voltage domain of your hash board is normal, this is the description of the S9 voltage domain:<link> the voltage is normal, you need to check whether the RI signal is abnormal. Here are instructions for checking the S9's signal:<link>

### Reply 5:
To do this tests you need a hashboard tester ...

### Reply 6:
This is basic miner repair 101. -0 ASIC means:A. there is an issue with the power supply somewhere on the board.B. The answer or return signal (RO) from the last chip the first chip is interrupted by a bad ASIC or solder joint. -Non-0 ASIC means you have it signal interruption going up from the first chip to the last chip. Which is composed of three lines:A. 25Mhz clock signal(CLK)B. A signal call reset(RST)C. command data line(CO)You dont need a tester to probe these lines but it must be plugged in to the control board with power. All lines are 1.8 V +/- 0.05 V except for clock which can be anywhere between 0.8 and 1 V. A tester is just a fancy control board with an LCD, a button, and the ability to send a test block to the hashboard without a pool(we called that a PT2 test and requires active cooling as well as a high amperage power supply). These static signals always exist regardless of whether you have a test or not. Theres so much more to it, I suggest you read the excellent guide of the Zeus website.

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21088,"Date: 2016-07
Topic: S9 with many pools?
### Original post:
Hi,When I configure my S9 I can configure three pools. If I configure three pools do I make three times as much BTC then if I just configure one?Thanks!

### Reply 1:
No. You have three pools because it (by default) will start with pool 1 and work there until there's a connection problem and then move down the pool 2 until there's a problem and so on. That's the ""failover"" setting. You can set it to ""balance"" which will do equal amount of work on each pool. BUT it does not mean you will earn more as you hashrate will be shared between the three pools. 12th /3 = 4th per pool.

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8025,"Date: 2014-07
Topic: can USB asic miner still mine?
### Original post:
I did acquire this from a room mate who is into mining back then and he left these two USB Asic miner and I was wondering if this can still mine. w

### Reply 1:
They can mine but they are far from profitable You can see how it would handle in Bitcoin here<link> is under Asicminer Block Erupter USB stick you could try another alt coin such as PPcoin which I believe is compatible<link> quite the list but you would need to sort it out based on how viable the coin is and what underlying script it uses if your curious Bitcoin uses Sha-256 just as an example I'm certain there are other alt coins you can choose from where the stick could still generate something decent.<link>

### Reply 2:
can it also be use to solo mining?

### Reply 3:
Sure if you can find a coin that no one really mines that uses Sha 256Trust me there are a lot of them the question is if you can find one that generates any money ^_^Oh half are based off litecoin scrypt mining but you can get the picture <link> compatible coins make for a good list of ones that actually can generate you some cash.<link>

### Reply 4:
They can mine and solo mine depending on settings. I would not count on one of these solo mining a block of BTC. But if you do it would be huge. It would be a very very long shot gamble.

### Reply 5:
Solo mining with a USB miner would be similar to playing the lottery. You're chances of winning the lottery or solving a block would be very, very small. But if you're very, very lucky and it happens, the returns would be very, very enormous.

### Reply 6:
Yup, they're similar. I remember someone here solved a block while using an ASIC that was only a couple of times more powerful than your typical USB miner:EDIT: Here is the link: <link> the lottery, winning the jackpot would get you millions of dollars but you only get one chance to win. Running a USB miner is cheaper than buying lottery tickets and you get multiple chances to win although the prize is only 25 BTC, or $15,000 worth at today's rate.

### Reply 7:
probably just one in a million chance but gave me hope hope to buy better hardware. what can you guys recommend?

### Reply 8:
what country are you in?what do you want to lose? spend not lose , but lose needs to be mentioned since you can lose all your money.If you are usa based and have a cat 5/ cat 6 connection get an s-1 they are under 200 usd. will mine with out breaking . many ebay sellers. they can undervolt and underclock. I know a seller (me ) that has 3 s-1's under volted and under clocked with a great psu on ebay that is most likely more then you want to spend.<link> there are low cost 1 s- setups on ebay to get you started.here are a few 200 or less<link>

### Reply 9:
u can use those USB miners as toys or something these days ...

### Reply 10:
I have 3 of those and I still use them when my pc is onno reason to leave computer on for this only

### Reply 11:
Okay so I might just use it still when this computer is also on. I'm planing to buy Bitmain S1 Antminer, is this worth and can it still mine bitcoins?

### Reply 12:
Better to buy some bitcoins or do a hobby mining. You will never mine a single bitcoin with antminer but you will mine about 0.001 maybe more in a day.

### Reply 13:
0.001 will be find since I'm also a freelancer so I might just mine while doing my work. Thanks for the replies

### Reply 14:
i do the same. I just mine for hobby with two antminers. I have buy my most bitcoins.

### Reply 15:
seem a huge investment to actually buy bitcoins these days. I do hope I can afford better hardware

### Reply 16:
Yes but make sure you have free electricity before you start cause its a negative return.

### Reply 17:
I don't have free electricity but I am using my computer daily for I get to chat and browse every day. I guess I can use it for hours while I mine. It don't matter how much I get though as long as I get to mine even just cents.

### Reply 18:
Solo mining isn't for me. With pool mining you at least earn a small, steady income. FYI I have been running 9 ASICMINER Block Erupter USBs for a year now (pool mining), and I have never found a block. They are a small part of my 7 TH/s farm... but note: my farm has never found a block!Think about that for a moment. You might get lucky... or you could mine for a whole year (or more) for no reward.

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15705,"Date: 2016-02
Topic: A few questions before I buy a Bitcoin ASIC device
### Original post:
Hi there,I have been looking around, and found a few different devices which all have different numbers (e.g. 336MH/s or 2GH/s - just the first 2 I saw) on Amazon. And I have a few questions, which I hope you guys will be able to help me with.1) What do these numbers mean?- I assume it is the speed. But is there any way to use these numbers to approximate how many Bitcoins per day/week/month you would average. E.g. a 100MH/s would be 0.000001BTC or something?2) If I got a USB stick ASIC device (I'm sorry, I don't know the proper term for these), does it run as long as the PC is powered? I.e. if the PC is in sleep mode, or running.3) What would be an estimated bandwidth usage for one of these? It's not an issue, but I would like to know whether upgrading to a slightly better internet package would be a smart move to account for more bandwidth usage.4) Do they need 24/7 internet access? I.e. if your internet drops for an hour, would it resume as normal, or would it need to be reconfigured/start from scratch losing an progress it had made.5) If you were to recommend a cheap starting device, just to see how it works and if it is something that would work for me, what would you recommen<rest of post truncated>

### Reply 1:
1) These numbers mean that the mining rig how much hash can solve, here is to check earnings for bitcoin calculator: <link>

### Reply 2:
2) In order to mine coins you have to launch specific software and keep it running.3) Bandwidth is not a concern right now, it should take about 3-5 KB/s.4) Mining software will be checking if your connection is up to continue mining automatically5) So you want any device just to try what mining looks like? I would suggest you two things: - In case of mining for fun -> USB Block Eruptor- In case of making any profit -> Antminer S7Every other option would be the waste of time and electricity, as it would be too expensive for a demonstration purpose and too inefficient to make any ROI.

### Reply 3:
How cheap is cheap? Spend about $40 and get a Antminer u3 while you are wanting to learn. (check amazon and ebay) There is no power supply required and you can message me if you want when you get it and I will be more than happy to help you set it up. If you want to go a little bigger and spend a couple hundred dollars Then pick up an s5 and power supply. Its going to be almost 25x faster than the u3 but will use about 600 watts of power and be a lot louder. ps- I have Antminer s7's now but still run my s3's I started with. Just keep them going.

### Reply 4:
You assume correctly. Those numbers represent how many times a second the device executes the hashing looking for a valid block solution. You can easily calculate the daily (or hourly, weekly, whatever timeframe) expected earnings for a device given its speed and the current network difficulty. The equation (simplified) is as follows:Code:25 / difficulty * 2^32 / hashrate / timeframe in secondsSo, if you wanted to know how much an Antminer S5 (1.155TH/s) would expect to make in a day if it were mining right now:Code:25 / 163491654908 * 2^32 / 1155000000000 / 86400 = 0.00355Those are the proper terms. A USB stick relies upon a host computer to execute the mining software and a powered USB port. Therefore if the computer providing the power to the port, or running the mining software is stopped, so too is your mining.There are other miners out there (I mentioned the S5 above) that are self contained. You plug in a PSU and a network cable, then use a web browser to configure it. You can then turn off your computer.Minimal bandwidth required. You're sending and receiving small bits of data from a mining pool. Unless you're running your own pool or a full bitcoin node whatever you have <rest of post truncated>

### Reply 5:
USB ASIC at these speed are only for hobby. They will not recover the cost of running the setup. You may consider joining a mining pool in order to get some small shares of the earning...

### Reply 6:
Just a comment: many friends out there are using ""free"" electricity for mining.... please make sure the one who pay for the bill agrees with the spending, or else it is really not very nice...

### Reply 7:
The idea of mining is very popular with newbies, it is like getting something for nothing.In reality mining is normally a money losing, or at best a break even venture, unless you have free electricity and get lucky with the difficulty increases.If you need the questions answered, I would recommend not mining bitcoin. Try mining on an CPU alt like Primecoin, see how much you get and how much fun it is! You will be happy you saved your money on ASICs.

### Reply 8:
agree. Or just if its just going to be for the fun of mining and speculation that bitcoin will eventually go way up and that will be where your profit comes from.Anyone trying to mine and sell the bitcoin before their machine becomes a useless <rest of thread truncated>
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11365,"Date: 2023-10
Topic: Octotank12 with 2 whatsminer 30s+ review. Not ready for full review.
### Original post:
Ocotank12 and 2 whatsminers coming my way.No Photos or movies the whatsminers are due in around 10 days.The octotank 12 is due in around 1 month.my thanks to mikeywith for sourcing me 2 whatsminers 30s+my thanks to redpanda for a $50 coupon on the octotank 12.<link> I paid 1500 + 543 - 50 = 1993<link> paid 3203 for the 2 of themNot sure about import taxes. but so far cost is 5196 and I should have 196 th.I will lock this until gear arrives.

### Reply 1:
spacer

### Reply 2:
spacer

### Reply 3:
spacer

### Reply 4:
feel free to comment.

### Reply 5:
This looks to be ideal for the home miner with use in someone's garage or basement. Not to sure I would put this in the living room however.Wish that my residential power was cheaper, I'd be a buyer if it was!

### Reply 6:
It has a lot of options. It can hook up to your pool in the summer. It may be able to heat hot water tanks.Our mine has 100kwatts of spare power. if a tank pulls 6kwatts we could do at least 12 maybe 15 tanks.Thus 12 x 200 = 2.4phAnd if we use m50s++12 x 250 = 3.0ph

### Reply 7:
UPS says It is at the 'local' <truncated> A.M.On the Way Departed from Facility Newark, NJ, United <truncated> A.M.Arrived at Facility Newark, NJ, United <truncated> A.M.Departed from Facility Louisville, KY, United <truncated> A.M.Import Scan Louisville, KY, United <truncated> A.M.Arrived at Facility Louisville, KY, United <truncated> P.M.Departed from Facility Anchorage, AK, United <truncated> P.M.Departed from Facility Anchorage, AK, United <truncated> P.M.Arrived at Facility Anchorage, AK, United <truncated> P.M.Departed from Facility Taoyuan, <truncated> P.M.Arrived at Facility Taoyuan, <truncated> P.M.Departed from Facility Chek Lap Kok, Hong Kong02/07/20237:56 P.M.Export Scan Chek Lap Kok, Hong Kong02/07/20237:56 P.M.Origin Scan Chek Lap Kok, Hong Kong02/06/20234:25 P.M.Label Created Shipper created a label, UPS has not received the package yet. Hong Kongso maybe I get it by 12 noon.this will be 2 x 98 = 196 th the cooler will come late feb or early march

### Reply 8:
gear is here.I will dry air test these in my garage.First one is powered up on normal. 96 th as you can see the middle board is a bit low.but not running for a long time. I will give it a 3 hour run on normal then test low and high speeds.My thanks to mikeywith for helping me to get this

### Reply 9:
That looks cool! I'm very intrigued at this minimalist immersion cooling setup. It's what I've been wanting for a long time possibly. I'm looking forward to reading more about the experience and your take on it. I wonder how this compares to a liquid cooled Antminer. I see that it can operate in 104 degree environments which leaves it just out of reach for being outside in the summer where I live, but I think for people living in most places this might be a decent outside option. Nice find. Now to wait for some pictures.

### Reply 10:
Glad they arrived, you can not test the high with air cooling, low will work fine and cool, also you can download whatsminer tools and set power limit for each miner, like 3000w it runs a lot cooler with reduced hashrate.

### Reply 11:
I will likely set them to 2800 watts as the cooler is supposed to do 6000 watts max.update. I set to normal speed and used the whatsminer's tool to lower watts to 3100 or less. results below:So I save 300 watts and drop from 96.0 to 93.8.2 at this setting would likely be to hot for the cooler.but I do know that setting on low does 88.1 and 2850 watts which would be good for the cooler as 2x2850 = 5700 which is under the coolers 6000 watt spec.

### Reply 12:
Keep in mind the low power mode will tune every miner differently, also, inside the tank temps will be a lot lower and thus the tuning might go higher because it does use temp as a measure of how low/high the frequency goes.Long story short, using the power limit is safer when you really want an exact watt per miner.

### Reply 13:
Okay this below is 'normal' with a 3050 watt captotal of 6100 wattswhich would be too much for the cooler if it can do 6000 advertised number.

### Reply 14:
Yes, you want to keep the power mode on normal when setting a power limit on the miner, it's almost impossible to bring the miner to an exact figure, so your 3050w limit will usually be slightly less, a few watts here and there, also, the power consumption on the tool isn't 100% accurate, so make sure you use a wattmeter to get the exact correct number.I would also look for a different tank, 6kw is too much for Antminer and a bit on the low side for 2*Whatsminer, but at the end of the day, the lower you go on these Whatsminer the more efficiency you gain overall.Also if the project kicks in and you want to sell the package as a 200th miner you would want to get the M50, they range between 25w/th to 28w/th, the lower the more expensive of course.The M50s 110th 28W would be a good pick, it s<rest of thread truncated>
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16815,"Date: 2011-07
Topic: multiple 5830s not recognized
### Original post:
running linuxcoin .2b and i can only get 1 gpu recognized by the system. how can i get the rest of the gpus up and going? im a linux newb toothanks any help appreciated

### Reply 1:
They all need to be plugged into something. Get dummy plugs.A cheap way is to plug one in, start mining, unplug the monitor and plug it on the next one, start it, do the same for the rest, and bingo!

### Reply 2:
kewl, thanks I'll try this

### Reply 3:
I thought that dummy plugs weren't needed for Linux?

### Reply 4:
hmmm tried changing the monitor to 2nd card while i got the first card up and mining and nothing is happening

### Reply 5:
You definitely don't need dummy plugs for linux. Are you sure you know what your adapter numbers are? What is the output of aticonfig --lsa? 0.2b recognized my 5850s no prob.

### Reply 6:
Dummy plugs didn't work. Now when I boot with 2+ GPUs I get nothing but a black screen with a scrambled mouse cursor. When it boot with 1 GPU everything works normal. Stilling using linuxcoin .2b and 5830sI still have no idea what my issue is or how to solve it. Please help!

### Reply 7:
Was just able to boot and get into linuxcoin with 2nd GPU plugged into PCI 1x rather than PCI 16x.This is the output for my aticonfig <truncated> aticonfig --lsa* 0. 01:00.0 ATI Radeon HD 5800 Series * - Default adapterlooks like its still not seeing the 2nd GPU

### Reply 8:
try a ' lspci | grep VGA ' you should have a VGA entry for each card that the machine sees. Or just ' lspci ' to see all pci devices.If you only have one here, then the system isn't seeing it... check BIOS settings, try diff slots on the mobo if your using extenders. I've run into a board that will turn off x16 slots if it sees cards in certain slots, you'll have to go thu your mobo manual to be sure there.If it does see both cards, then it's something in aticonfig .. one command I run all the time is ' aticonfig --odgt --adapter=all ' which should give you the temps of all the cards. If you have two in lspci, and only one using --adapter=all, then I'd double check the drivers and SDK.I'd also try each card one at a time, to make sure you don't have a dead card..

### Reply 9:
SOLVED:Had to plug my monitor into what my BIOS has declared as the default monitor PCI-e slot.

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13279,"Date: 2014-10
Topic: Windows 8-based miner
### Original post:
I'm looking for a Windows 8.1 (64-bit)-based miner. I've tried BFGMiner and CGMiner, and couldn't get either to work correctly; they both open a command prompt window, run for about two seconds, and then close on their own. I would prefer something that is GUI-based. And I have no interest in using BitMiner as I have no desire to use OpenID for their website log-in.

### Reply 1:
BFGminer or cgminer are the only two miners you need or should be using.There's literally thousands of thread on this forum alone telling you how to set up both.You're not trying to mine with a graphics card are you?

### Reply 2:
If you don't feel like mucking around at the command prompt, MultiMiner runs great on Windows 8.1 and provides a full GUI for getting started mining:<link>

### Reply 3:
Which GPU you are using?

### Reply 4:
I'm on a piece of crap laptop, for the time being, so it's just got Intel HD 4400 graphics. If I'm not mistaken that's a GPU embedded in the CPU. Probably part of the problem. Unfortunately, that's all I have access to right now. My desktop is crapped out for the time being. I got Multiminer installed, but when I try to start it I get ""None of the Pools configured cab be used for bitcoin multiminer."" I'm a member of Slush's Pool. I enter the log-in details correctly, but it won't start mining when I hit start, just shows that error message.

### Reply 5:
You can't mine with a HD4400, the OpenCL drivers don't work. You're on a road to nowhere, and you've already run out of asphalt.

### Reply 6:
If you say so... switch to BitMinter; working fine now. HD4400 is OpenCL 1.2. Granted it's moving along like someone pushing a SUV, but it is working.

### Reply 7:
it'll use more power than BTC you will get in return. so basically you're paying money to destroy your laptop

### Reply 8:
You will never mine even 0.0001 BTC with a graphics card or CPU. If you're just experimenting, you can get an older ASIC machine on ebay for cheap.

### Reply 9:
That'll make 0.000000001BTC per month if you're lucky. At current difficulty. Basically all you're doing is burning out the fan in your laptop.So, back to the waste of time and effort thing...

### Reply 10:
Well I've already got BTC 0.00000003. This laptop is a throw away basically; don't care if it blows up, and I don't pay for the electric anyway (at least currently). If I got an ASIC unit, I need something less than 50 bucks with a USB connection (no PSU sold separately either). Suggestions? Not willing to spend more than that.

### Reply 11:
Must be a few BFL Jalapenos out there for less than $50. They're pretty slow, but they do seem pretty reliable. I have one, and it just mines, never gives me any issues, ever.

### Reply 12:
I got a ~2.5GH/s CryptoRig HitchHiker NanoFury for about $25. Really too expensive for what it does, but... it'll do for now. Really at the current BTC price a viable miner would really need to be about $1 per GH/s, in my opinion. When I get some cash I'll be going after some other stuff on eBay.

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23893,"Date: 2022-03
Topic: Avalon 1166 - can't edit/add pools/worker as no submit button
### Original post:
When logging in via the 192... address i can navigate to the config page which shows the fields to put pool, worker, password, however there is no button to save or submit.What is the issue here?

### Reply 1:
Hi,There should be a green button at the bottom, this is what mine looks like.J.<link>

### Reply 2:
ThanksThe save button was hidden under a firmware bannerHowever, After hitting save and being prompted to reboot manually, the configuration resets back to empty fields.So I am unable to add my pool data.Would could be the cause of this? its resetting back to default

### Reply 3:
How are you entering the data, are you using copy/paste? If you are, make sure there is no space at the start or end of the line.Very often when using c/p there is a whitespace added at the end of the line. Miners do no like that and will not accept it.

### Reply 4:
Try to use incognito mode when accessing and configuring your miner.Also, try to manually type the pool server then save it. If it doesn't work you might have a miner with locked firmware.

### Reply 5:
Guys I found solution to this problemWorker must have a dot and a numeric character otherwise it doesnt save.For example, our worker called ChinaWont work - ChinaWill work - China.001

### Reply 6:
Makes sense in a way. Many if not most folks have more than 1 miner so we do that automatically so never really ran into that before as all my miners have unique dot<names>...Yer 1st Merit given for bringing that up

### Reply 7:
Guys another updateAdding a dot( . ) and number to the worker isnt the issue, it was actually Kaspersky Internet Security causing the problemMy antivirus software was not allowing any data to be submit to the 192.168.... miner admin page...Pausing Kaspersky for 15 mins is what allowed me to configure the miner and also see the stats

### Reply 8:
Any miner-related website is always blocked with Kaspersky so you must disable the antivirus before you can properly access them.Or alternatively use a mobile phone to set up your miner.

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16813,"Date: 2011-07
Topic: 6970 Constantly Changing core clock!
### Original post:
So idk whats going on but my sapphire 6970's core clock fluctuates between 840 and 880 when I overclock ti goes to 950-840 why does it do this it also brings my mhash down to 300 when I overclock and at stock I get 360. My temp is 75c so idk why it would be doing this using Sapphire Trixx!

### Reply 1:
AMD introduced PowerTune a few months back in their drivers.Go to Catalyst control center, write 'overdrive' in the search field and set the Powertune slider to +20 if you don't want PT to be enabled at all.At the default setting it will attempt to save energy and optimize performance based on the GPU load by changing the clock frequency up and down.(Bad for mining because you will want the GPU to be always at full load and frequency, good for gaming)

### Reply 2:
I don't want to enable AMD Overdrive shitty overclocked tool always will be It's not even enabled so why is it doing this I want my clock to stay at one frequency...

### Reply 3:
I don't think you read the post.. If you want your 69xx series GPU to stay at one frequency, you have to disable PowerTune in AMD overdrive.It's enabled by default at the driver level.You don't have to overclock anything.

### Reply 4:
How do you disable powertune?

### Reply 5:
You know, I read this post about it the other day. Here's the link on how to disable powertune:<link>

### Reply 6:
how would one disable powertune in linux console (ssh) only?

### Reply 7:
There's a forum post here, with code:<link>

### Reply 8:
thanks that really helped my 6970s!

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    ""hardware_name"": ""69xx series GPU"",
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10153,"Date: 2017-02
Topic: Share Your Mining Rig Pictures!
### Original post:
I have started a new instagram page to share mining rigs of the community for easy access to browse all the amazing ideas us miners are coming up with!The Instagram username is miningrigs.Please share your photos using instagram direct message and I will shout you out featuring your mining rig!

",[]
21904,"Date: 2017-12
Topic: S9 Overview and Miner Stats Page Empty
### Original post:
A few of my S9s will randomly stop reporting stats to AwesomeMiner. When I go to their overview page (/index.html) or Miner Status page <truncated> - they are blank. However, looking at my pool stats I can see these machines are still mining just fine. Today, two machines doing this show File System Version Fri Jul 21 05:15:25 EDT 2017 and a third one shows Mon Jul 3 22:50:58 EDT 2017. It seems like the web interface on the S9s makes API calls to get the information and the API calls are not returning, so the pages Overview and Status pages are empty. The log pages show information.Has anyone else seen this behavior? A reboot fixes them.

### Reply 1:
doesn't fix mine. goes down a minute later

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7049,"Date: 2014-01
Topic: [CLOSED] - Stumptown Miners - Avalon PCB Assembly - West Coast USA
### Original post:
Ordering has ended. PCBs and components have been bought and received.I am currently offering refunds of $45 per miner, for those who want out.Current projected throughput is 100 K16 miners completed per day once the test board issues have been figured out.==========Terms of Sale (formerly at <truncated> You will supply your own chips.You will tell your group buy organizer to send your pledged chips to Stumptown Miners.The price of the miners you have bought may drop due to more people from your group buy joining. Any price difference in USD between what you paid and the new price will be sent back to you as BTC.There is a batch size minimum of 60 from each group buy for each design. If you order a design and there are not enough orders of that design from your group buy, you may either receive a refund or (if you are part of an early group buy) opt to have your chips lumped in with a batch from a later-arriving group. You must make the election to either have your chips lumped in with a later order or receive a refund at the time of purchase.All received BTC will be converted to USD to hedge against market crashes. (This step is necessary as the assembly and fabrication plants do <rest of post truncated>

### Reply 1:
Thanks for the update.

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9318,"Date: 2015-09
Topic: [GUIDE] B's Moderated Biased & Opinionated Miner Sellers Trustworthiness Guide
### Original post:
Bitmine delays, no refunds just sad miners who want compensation. Nothing changed for Bitmine customers over the week just hurt and pain.

### Reply 1:
Asicminer Prisma Brief - A New AM Miner for October ASICMiner Prisma is based on a proprietary X48 design for BE200. Greatly reduces power consumption of the device per GH/s compared to the X24 design.Consumer Comments:

### Reply 2:
Spondoolies Tech customers see the effort being made. Clearly the CEO and Tech Support are on the forums. They are responding to questions and giving answers without trying to hide from their obligations.

### Reply 3:
Minersource FTC complaints being filed Minersource has been slow to refund and provide adequate answers to questions by consumers for several months now and it is <truncated> fails to refund then force shipment on this customer.

### Reply 4:
BTCGarden Looks to new Prototype BTCGarden is working on a new prototype. Customers happy and waiting to see the product.Consumers respond

### Reply 5:
BitmainTech continues to keep most of their consumers happy Minor things like this often happen. BitmainTech usually ups their game and makes sure shipping issues like this get rectified.

### Reply 6:
Cointerra customers banding together for a lawsuit Cointerra should be avoided they still have not refunded and or compensated all their customers.Original PostMore Customer Complaints:

### Reply 7:
Forgot about AMT in there, the village idiots version of BFL complete with its own Josh <link> all the threads opened about them are referenced in the page.

### Reply 8:
AMT Ran off with people's money failed to deliver most of orders taken in by the companyThanks to opieum2 for the link.

### Reply 9:
What do you think of SHA hashlets?

### Reply 10:
Not much of anything related to sha mining is going to turn a profit Diff is too high (for both ""hashlets"" & ""at home""),power consumption is too high for ""at home"" miners & most importantly the cost of electricity in residential settings is too high,in most cases.If your electric rates are more than .08 cents per kwh,your profit margins are going to be very thin.You really need kwh rates of .02-.04 to compete with the massive mining farms that have taken over the network The ONLY saving grace in ""at home"" mining could be the price of BTC....I feel it needs to get to around $800 or above to make it feasible,at least for ""at home"" miners....& that's only for few more months even then.So,if you think the BTC price is going to increase,you could justify the ""gamble"" MAYBE The only mining making anything ATM is altcoins & that may not be for much longer,with the 750+mh units coming online very soon BTW,keep up the good work Bick!!!!!!!!!! Good luck folks!!!!!

### Reply 11:
WILL IT ROI or NOT ROI? That is the real question consumers want the answer to at this point beyond the will they scam me or not.There are growing concerns from all miners that 'ROI' could be hard or impossible to achieve by even the most reputable companies like AM, BitmainTech or SpondooliesTech. Make sure you invest more time in calculating potential returns before making any purchase from companies on the Thumbs Up list.Sample of Debates on ""Value"": This goes on in nearly every fabricator thread between Fabricator Fanboi's. What is really funny is the same people argue both sides in opposite threads. Pffft... funny. but seriously home mining at this point is pretty much not a viable option.Same Debate Different Fabricator Thread on ""Value"":Voice of Reason on Value:Notes from TheRealSteve:

### Reply 12:
Here is a long well researched and clear thread started by DrG about cloud hashing.<link> those miners that you can get delivered to you?I guess we have to start another cloud thread for that but it wouldn't be in ""hardware"".My feeling would be caution. More caution or even EXTREME caution in calculating out if this is a viable investiment.I posted my thoughts in the thread ""Proof of dishonesty and lies from Gawminers.com Hashlet Ponzi Scheme Scam""@ Unacceptable... thanks will do.

### Reply 13:
Black Arrow Refunds / Miners had been promised, neither delivered to customer satisfaction Black Arrow still failing to refund people.

### Reply 14:
BFL closed by FTC. #ASKFTC on the 24th of September was quite good and helped consumers learn more about the current receivership that BFL is under. Here is a compiled list Here is the full #AskFTC Q&A session regarding Butterfly Labs @ButtCoin <link> BFL Signature Campaign If you want to help the FTC gather more data on BFL and make the court order receiver a permanent fixture at BFL then spread the word in your sig.IMPORTANT PSA for BFL former and current customers:More... DON'T FORGET TO #ASKFTC about the BFL debacle.The shut down of BFL is reaching pretty much every major media venue now... On Forbes. Meanwhile, according to FTC attorney Helen Wong, the com<rest of thread truncated>
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8830,"Date: 2015-02
Topic: Building a double Antminer Shelf
### Original post:
Hello everyone!This week I'm getting a new antminer and need a new shelf to place it next to my router and UPS. So I thought I'd make this into a howto/tutorial so you guys can benefit too.This is my first drawing for the idea.It has two shelves one for each antminer, above the shelf is two dowels to hold PSU's at a 45^ angle. At the very bottom is a small box that will be filled with two sandbags to keep it from moving.<link> list:2 14""X36"" pine boards2 26""x14"" pine boards2 1"" diameter 28"" wide dowelsI'll be updating within the next couple days as I build it!Feel free to share your custom shelving that you use for bitcoin miners.

### Reply 1:
[Holding for future tutorial info]

### Reply 2:
Hope your board is really tick as antminer is heavy especially if you have so many of them.

### Reply 3:
Do not forget , S5 is fire hazard.

### Reply 4:
Thank you for the reminder, I will be putting this shelf right below a smoke alarm.

### Reply 5:
I prefer to buy the cheap wire or plastic shelves but good luck on the build.Keep in mind to not restrict airflow in front and behind. Had considered building an enclosed case/baffle to house and quiet the S5.

### Reply 6:
use a few ceramic tiles home depot and lowes have them for about 1 usd each. It should not add a lot to your cost. I think it may help

### Reply 7:
S5 is fire hazard? Do you mean it is even worse then the average mining hardware?

### Reply 8:
no. it can get hot, but nothing near starting a fire. (for reference the PCB is about 45-50C stock and runs fine at >65C if the cooling is sub-par --- the SP20 PCB gets to 65-80C in normal operation with the chips exceeding 100C)S5 is probably no more of a fire hazard than the SP20, and far safer than the prisma batch 1. (In fact, I dont think any S5 units have caught fire yet, but for sure a warehouse of SP-T gear burnt to the ground). a wooden shelf wont catch fire unless it reaches really high temperatures, so its pretty damn safe.a few easy ways to make it safer: use wood that is denser and treated. plywood is more flamable then cut boards, and metal cant burn at all. (in fact, wood wont conduct electricity or short exposed contacts so its a good choice)

### Reply 9:
The spark in the dust can ignites dried and pre-warmed wood.

### Reply 10:
TBH wood requires a pretty large sum of energy to cause it to combust - if you sre using ense, quality wood it will not catch fire even if it heats to 100C and is in contact with a few sparks (if you continues to shower it in sparks or flame it may ignite - but as i mentioned choosing the right type of wood for the job will make it several times less likely to ignite than a cheaper plywood or particle board

### Reply 11:
yes the above suffered two popped caps one on each board. caps are smaller then the ones that popped on the asic miner prisma. so far this is the only case of popped caps .but some ceramic tiles on your wood shelf would help heat shield the wooden shelfs.We do not know if s-5's are going to be doing pop a cap. dont know how rare 1 in 1000 1 in 2000 or 1 in 50 .Some s-3's did pop a cap very rareSome s-1's did pop a cap very rareAsic MIner Prisma not rare there was a recall refund rma setup by Asic MIner Fried cat

### Reply 12:
yup from home Depot for 50 bucks .. but this looks nice if hes good at it why not it might cost him more making it but hell make it to last, I'll bet .My plan is to buy one of the 50 shelves at Home depot then build a case around it with the right exhausts and buy a small AC unit for the summer in the winter i live in base meant for the cold I don't care how cold it is my windows in the base meant sty open, i love the cold.

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7018,"Date: 2014-01
Topic: CNBC Explains: How to mine bitcoins on your own
### Original post:
<link> god...... all those newbies flocking to bfl and miners that will never roi (or even deliver) after the article... like lambs to the slaughter.

### Reply 1:
LOL.....

### Reply 2:
Tigerdirect just lost a lot of my respect. <link> The information presented on bitcoin mining seems to be from 2012. LOL pushing their AMD GPU's for mining bitcoins. AND BFL!!! Going to be a lot of unhappy campers when they make their 0.000001 BTC after running a week. ;-)

### Reply 3:
So my 180 GH/s antminer can find a 25 BTC block every 0.0099419275 seconds? or rather ~35 blocks an hour?My pool has been very very unlucky all along... time to solo mine...

### Reply 4:
Not any more you cant

### Reply 5:
I'm pleased to see CNBC continue to raise their journalistic standards.

### Reply 6:
When I saw the BFL logo.... dude I just lost it. Never shopping there again.

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8078,"Date: 2014-07
Topic: Powered risers cause video problems?????
### Original post:
Hi guys, I'm new to the forum. I'm not a bitcoin miner, but I'm extremely fascinated by your inventive hardware setups for crunching as much data as possible with the smallest physical footprint. I'm a 3D animator who is an extremely small group of GPU rendering early adoption. But everyone is focused on sticking everything in a case, while I've always built open air gear. After seeing all of the great rigs on this forum, I built my own to use some powered GPU risers. My motherboard is the Asus Maximus 5 Extreme, and my build went well until after booting a few times to install various software. Eventually, it would almost boot into Windows 7, then the video signal would drop. I reformatted several times, thinking it was some software problem. But I eventually found out that unplugging the molex connectors to the risers allowed the computer to boot properly every time. It even posted much quicker, because when the issues were happening it would take about 30 seconds for a post. Now it's instant after a <truncated> I damage anything by running the cards with the risers unconnected? It seems to be operating beautifully now, but could something be slowly degrading because of that lack<rest of post truncated>

### Reply 1:
I dont think so unless your riser are faulty.

### Reply 2:
as long as the GPUs have thier own PCIe power, powering the risers shouldn't be a necessity.keep in mind that the risers often limit the bandwidth of the cards, espescially if you use 1X risers as these will make GPU-intensive operations like games get really screwey with textures and artifacts freaking out all over the place. 16X risers should prevent this issue though (my GPU0 is on a 16x riser for gaming and the other 3 are on 1x risers for mining)

### Reply 3:
I have 16x risers. I read a post of the ROG forums that said I should try turning the PCI gen to 2 in the Bios...and that worked for a while. I was able to actually have 2 cards visible in the device manager. Now I'm down to one again. Maybe there's a special order the cards need to be added to get them to show up? I don't know...ASUS stuff is always weird and I'm going to try some more things before I RMA this board soon and never buy ASUS again.

### Reply 4:
Did you install the vid driver as many times as you have vid cards Each card usually needs the driver(same driver,just reboot & install driver again) installed for it to be seen by the OS.

### Reply 5:
I will definitely try that, although at the moment the system is seeing the gtx 780 and the gtx 760. They both use the same driver.

### Reply 6:
Ah,Nividia...I always do a ""clean install"" (check the box while installing,under ""custom install"") of vid drivers too with nothing but the driver & HD audio & Physics.Forget the 3D crap,its useless unless you actually found a use for it Here is the best way to install Nvidia drivers:<link> boot in safe mode,type msconfig in the start button search field & go to boot tab & tick the safe mode box & apply.You'll have to undo this later when you finish with driversweeper in safe mode,before you reboot,otherwise you just reboot into safe mode over & over & over Be careful when running Driversweeper,DO NOT REMOVE CHIPSET DRIVERS,you'll have to do a full OS reinstall to fix that goofup

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3685,"Date: 2014-09
Topic: [PRIVATE] Ninja Group Buy #3 Hosted $7.50/GH - .25 = 30GH Owners Only! [45/300]
### Original post:
paid for 5 shares please reserve 2 more for mecheers<link>

### Reply 1:
Added 1 more share, total in this group buy now 3 sharesI have 2 shares in group buy #1I have 1 share in group buy #2<link>

### Reply 2:
1 share for me, please. 0.25 BTC sent.tx-id <truncated> FrankToil

### Reply 3:
He's the gimp in that batch, it was hell getting him over 100GH. Seems every batch has one that's troublesome, batch #3 has one too. That's all he would do even on his own power supply; starts off strong and then drops down. I've tried different clock speeds and firmwares, I'm guessing there's a marginal chip somewhere in the chain. Fortunately, the gimp is offset by some miners that run stronger.

### Reply 4:
1 sharetx id: <truncated>

### Reply 5:
Could you update the owners list?I see I have 2 shares in this group, should be 3.

### Reply 6:
Please reserve 2 shares in this group for me also. I have reserved two shares in Group 2

### Reply 7:
Please add 1 more share for me (bringing me to a total of 2 shares in this group; I have 11 shares in group 1 and 2 shares in group 2).Paid 0.25BTCtx-id = <truncated>

### Reply 8:
I have 5 paid shares and just sent btc for the other 5 reserved shares for a total of 10cheers<link>

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    ""hardware_name"": ""power supply"",
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2822,"Date: 2014-02
Topic: [OPEN&HASHING NOW]Doc's Instant Hash R1 - 2/18 shares available 0.1BTC=10GH/s
### Original post:
Reserve one share for me please.I'm about to send you the funds.

### Reply 1:
Transaction ID: <truncated> Address: <truncated>

",[]
4129,"Date: 2012-07
Topic: Solar Flare
### Original post:
Ok, I know this is tinfoil hat ON, but how could one protect their FPGAs from toasting if theres a big solar flare? I mean some of our rigs are really expensive!

### Reply 1:
This is right up there with ""how do I protect my FPGAs from a nuclear EMP blast"". Lightning strikes are orders of magnitude larger in effect to the power system, so maybe worry about that first.

### Reply 2:
I'm not good enough at physics to know if there is a real threat to the circuits them selves. I'm not concerned with power issues, fuses and breakers will handle that. But if anything could fry the chips that have no metal around them that is grounded, many of us have a problem, cause we all have our FPGAs out in the open, ungrounded.

### Reply 3:
""Solar storms would primarily affect the power grid, and are not likely to harm things like computers. ""- <link>

### Reply 4:
faraday cage is what you need.I've noticed that my GPS signal has be degraded the last few days and I've seen some other people report the same. damn solar flares

### Reply 5:
Probably China testing something./tinfoil

### Reply 6:
Solar flares should be the least of our concerns. We're shielded pretty well by the Earth's magnetic field. From what I've read solar flares only cause issues with systems that operate outside of the magnetic field(satellites) and very large circuits(power distribution lines). Wikipedia has a decent article on the phenomena -> <link> Digging through their cited articles is also an interesting read, if you are in to such things.tl;dr - go out and watch the auroras as the Sun smacks Earth around a bit.

### Reply 7:
GPS, Satellite tv, Satellite Phones and Power Grids go boom.

### Reply 8:
What about protection from asteroids? Those things leave a big dent!

### Reply 9:
To everyone saying there is nothing to worry about:<link> add in millions of more miles of wires, not to mention adding such wiring to every home. Sure, we're unlikely to experience another flare of that magnitude soon, and we will have some warning time. However, it still won't be pleasant the next time it happens. Also, there is the threat of geomagnetic reversal if the magnetic field is disturbed too much. It has happened many times before and it will happen again.I wouldn't live in fear of such events, but to discount them completely is IMHO folly. Just make sure you have a few fire extinguishers and if a huge flare is detected don't ignore the instructions. At the very least I'd switch off your main circuit breaker when it is going to hit. The recent flare was the largest in 5 years, but it wasn't really that big. We're still a year away from the peak of this cycle though so expect more and larger flares. For more information, see spaceweather.com.

### Reply 10:
That sensitivity to the cosmic radiation that you keep reading about FPGA is about SEU (Single Event Upsets). Those are cured by the power cycle.It is extremely unlikely that SEU would damage an FPGA. It would be something like SEU that causes input pin to reconfigure itself as output pin and then fry in the confrontation with the external driver for that pin.Your FPGAs are much more likely to die from electromigration due to high temperatures than from aftereffects of a SEU.<link>

### Reply 11:
If we're hit by a big enough solar flare to affect your FPGA, your FPGA getting toasted will be the least of your concern.

### Reply 12:
Samethread is Same: <link>

### Reply 13:
It's my understanding that a large solar flare/Carrington Event could cause problems in areas with long transmission lines. The large transformers at the end of those long transmission lines could be destroyed.So from a practical point of view, I think the best thing you can do is install a good whole-house surge protector and make sure everything is grounded properly. Midnite Solar makes a good whole-house surge protector for < $100. You need to research them, because some of the brands out there are of really poor quality and won't provide much protection.That being said, if something like that were to happen in your area, you may be without power for weeks/months/years depending on how wide spread the damage is, since there are limited quantities of the large transformers available to replace damaged ones.But at least then you've got a chance to protect your equipment, so it can work again if you've got power back. Or if you've got your own generator/fuel supply or solar power.

### Reply 14:
Yep, out here in the hills we take stored food and generators as a given, hence I didn't mention them.

### Reply 15:
why dont just ground it then?luckily i live in germany: nearly every house (except very old ones) are grounded.i've even grounded one myself - its really easy.

### Reply 16:
Because then you encourage current to flow through it into the ground. When you get the warning the best way to protect electronics is to isolate them from any circuit and ideally put them in a faraday cag<rest of thread truncated>
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16021,"Date: 2018-10
Topic: Brand new stock XFX Radeon 6770 running at 101C under load
### Original post:
Heat sink not sitting well on GPU or fans not moving or clogged.my bet is heatsink/GPU contact sucksI had a XFX HD6870 that was an RMA replacement would heat up until PC crashed around 104c. Removed heatsink, cleaned, applied some new thermal compound. zero issues now. 77C under full load in a 75F room

### Reply 1:
We recently got a cheap Asus 5450 with a heatsink held on by 2 pins, and it was so flimsy, the heatsink was flopping all over the place. I couldn't imagine it cooling that thing under load, especially mining. Take the heatsink off, and repaste it. Make sure it makes good contact when you put it back on. Then use a program to manually set the fan to a higher setting, like 80%.

### Reply 2:
yep i have 2 of them and after cleaning and doing the thermal paste they run at 90*c. the heat sink is garbage.. i have a 140mm can just sitting ontop of them blowing air right into their heatsink to keep them at 90...they are an extremely poor design. i just hope when they stop working xfx will give me 7770's with devent heatsinks...ive been mining nonstop on mine for 2 weeks with no problems at 90*c just put another fan ontop of them.

### Reply 3:
i've got mine on 81c

### Reply 4:
send them back for RMA. lie to them and say the card keeps on throttling.

### Reply 5:
I'm having much of the same issue with a batch of 6850's I won off ebay. They were supposed to be new, but I'm beginning to suspect otherwise. At stock levels they run at 98C with the fan going 100%, and that's in an air conditioned room set at 16C. Forget overclocking, they just throttle all the time, and I've actually resorted to underclocking just to keep the temp. at about 94C. They're putting out 181mhps, and I know they're capable of at least another 50/60 mhashes. I like the idea of checking the heatsinks and fans.. perhaps something is loose or a bad contact somewhere. Will dig out some thermal paste and try to sort them out. Sounds like the OP is having the same sort of trouble. Hope you get it sorted.

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23509,"Date: 2021-04
Topic: Chunk out of chip
### Original post:
Heat sink fell off and took a chunk of the asic chip with it. T17. Any chance I can still use the chip? Was hoping to just reinstall heat sink and call it good but this looks not great.<link> I have a lot to learn, sorry if this is a dumb question. Anybody think I could still use it?

### Reply 1:
My guess is you can still use it if you clean the surface to ensure proper contact between the heatsink and the chip but to be sure I would reach out to wndsnb, he is one of the few members who have actually fixed a good number of hash boards and has probably faced the same issue.

### Reply 2:
It's possible it might still work, just depends on if the die was also damaged and not just the top package. Even if it works though, the thermal performance isn't going to be great. I've never bothered testing any asics that are broken like that, I just replace them.You could try to test it before even attempting to put the heatsink back on. Just keep an eye on the kernel log while the miner is booting up, and shut it down if it actually gets past the ""found 30 asic"" message. If it says it found 0 asics, or less than 30 for that chain, then most likely the chip is not salvageable.

### Reply 3:
It seems the ASIC chip looks BM1397AG this type of chip is not the same as old ASIC chips this one the top layer can be easily crack or scratch.I got some images from ASIC manufacturers on Google not the same as the image you link above but I believe they are the same.I agree with wndsnb you can try it first but for me, it would be better to replace it with a new one. Because the top layer is already damaged and you will only get bad ASIC temp(it will be more problematic) that can affect other ASIC chips.

### Reply 4:
Thanks for the thoughts, ill check the kernel log to see if its sensing 30 chips. Good idea. And yes that is the 1397ag- I do have new chips in case I need to replace them but Im worried Ill do poorly so Ill wait to see if the chips gone for good or not.

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9145,"Date: 2015-06
Topic: The combined  sidehack-novak usb stick review thread. GekkoScience BM1384
### Original post:
Locked for the next little bit.all reviewers shoot me a pmall others be patient .

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23729,"Date: 2021-10
Topic: Pool Change
### Original post:
Hi, I also have a problem with a T2T innosilicon, I want to change the pool and it doesn't change where the problem could be ??

### Reply 1:
Hi, this problem appearsOperation succeedes 1 miner with pool locking

### Reply 2:
This is not the right place for this issue you must move this to ""Mining Support"" you can find the move button at the bottom left of this thread.Anyway, about your problem can you check if there is IPset button can you hold it for 4-15 seconds. It can reset the miner to default to erase the old configuration. If not working try to use this InnoMonitor tool you can find it from here <link> reset it to the factory settings as the image shown below.And then set the pool using that tool.Hope it will work.

### Reply 3:
Hi buy from china is used

### Reply 4:
Well, then that is bad news.Your chances to recover this gear depend on the type of virus and how innosilicon handles the reset stuff, does the control board have a slot of an sd/tf card? if yes then you can probably find the files needed to flash the miner, or simply requested it from their support team, if it doesn't have an sd card slot then you will have to buy a new control board.Again, I am not 100%, if it was an Antminer I would be confident because I have seen a truckload of those gears, but I have no idea about this T2T, I assume they use a similar firmware and the are subject to being hacked just like all other mining gears, and the first symptom of an infected miner is the inability to change the pool/worker and this is what I based my conclusion on.

### Reply 5:
Hi, I'm a sd card

### Reply 6:
Ok then go ahead and flash it with an sdcard, make sure you test the sdcard before flashing see if it can read/write files, also make sure you download the files that fit your miner's model, and whatever you do, do NOT power the miner off while flashing it.

### Reply 7:
i don't know which to download care is? T2T 25 TH

### Reply 8:
I don't know either, here is the guide on how to flash your miner using Sdcard > <link> I couldn't find the files for you, their website is pretty useless, I think your best shot would be sending them a support ticket requesting the image file for your miner, make sure you send them the control board model and miner's SN, they should be able to provide you with the correct file, also there is a chance one of the members here have it, perhaps you should start a new topic ""Inno T2T sdcard files needed"" or something like that, the current title is pretty inaccurate.

### Reply 9:
As far as I think, this is not itG19_R1.2

### Reply 10:
TypeT2TController VersionsocMAC <truncated> Date11th of June 2020 03:28 PMPlatform <truncated>

### Reply 11:
I have never owned this gear, but based on your explanation this seems like an infected miner, did you just buy this miner from the second hand market in China or elsewhere from someone you don't trust?I could be wrong, but you should isolate this miner from other miners until the problem is fixed (better safe than sorry), for now you should try to reset the miner, also if an Sdcard flash is possible it must be done.

### Reply 12:
Based on the image posted above the control board type should appear next to ""HW Version"" which doesn't seem to be the case for your miner, the virus is likely hiding this information, at this point your ONLY option is to contact Inno, they should be able to obtain all the information about your miner and send you the right files for sd flash as well as the firmware you should upload afterward.

### Reply 13:
If you can disassemble the unit you can check the control board you can see something like this image below.If you see some text write them down and use that text to search the exact SD card img file for your miner. Use that term in Google with ""SD/TF card firmware"" at the end of the text. Let see if you can find exact SD card firmware for your miner.If not, the only best solution is to contact the innosilicon support as suggested above. They can help you out about this problem if it's still under warranty but if not, just try to contact them for SD card image.

### Reply 14:
Try to access the miner on the browser and then find the system overview make a screenshot so that we can see the exact model and hardware version of your miner.Sample:<link> for TF/SD card manual, you can read this PDF file <link> sure to check the board first if what is the exact model of your control board.After flashing this with TF/SD card you can manually upgrade it to the latest firmware available on their support. Never tested this so this is risky because I can't find the right procedure to flash this miner with SD card.

### Reply 15:
I had the exact same problem, buying a miner from Innosilicon. In my case it was the T3+. I tried everything, inclusing firmware update, flashing the firmware via TF card, you name it. The solution was easy, provided by the customer support of Innosilicon, after constantly<rest of thread truncated>
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9174,"Date: 2015-06
Topic: Where would I look into buying miners?
### Original post:
I am interested in opening a farm and purchasing a lot of miners.Just wondering how my steps would be from here, are there any sites that actually work and send you your miners in time? Any trusted sites?I wouldn't want my investment to go to scam so just wondering how the situation is nowadays and if there indeed are any trusted sites where you can buy miners from and actually get them in time.

### Reply 1:
create WTB thread here <link> and wait/check for offers and maybe you will be lucky. anyway, what is you electricity price per kW?

### Reply 2:
There is not too many options for new equipment. Bitmain and Avalon is about it. For used myself and various others can sell you equipment.How many are you looking for?

### Reply 3:
This is probably the best answer. And you should only mine if your electricity is $0.05 or less per kw. Anyways you can buy from bitmaintech, with their s5.Or check out this list <link> to find more gadgets/hardware (also be careful of vaporware posts).You should stick to spondoolies, bitmain, and avalon. That is just my personal opinion as KNC has had fire issues before... BFL scammed a ton out of their customers and many others did not deliver on time.Maybe a better idea is to hold out as people speculate there might be new mining gear within the next couple of months.

### Reply 4:
As long as you have free or cheap electricity then get an old miner from the classified section. Avoid eBay and amazon. They are overpriced.

### Reply 5:
Yeah, there is at least one trusted site - bitmaintech.com. If you can say that there is an adequate customs in your country, then everything is usual OK when you order SHA-256 miners from Bitmain.If you want to buy a lot of miners (here I mean really valuable quantuty of energy-efficient miners) - take a look at this: <link> Anyway you better talk with them via e-mail or by phone about possible discount even if you want to buy less than 1600 units.Also you can buy some used S5s (or may be S4s too) from Chinese mining farms, but it appears to be very difficult to find such an offer, it can be found somewhere in Chinese Internet, so you need a Chinese friend or something... Once I saw such an offer at aliexpress.com, but suddenly the seller has disappeared...What about other mining hardware than Bitmain? You can try to find some miners by Spondoolies.

### Reply 6:
Thanks for this. Will take a closer look at it.

### Reply 7:
Thanks, will do that when the time comes. I am not sure to be honest, I live in europe so they shouldn't be that expensive.

### Reply 8:
What do you mean ""lot of miners"" ? 100? 1000? From Europe you should try <link> ordered some stuff from them, fair prices, quick shipping, sometimes have bulks of old gear, so it worths a try.

### Reply 9:
Cheap power + low entry cost are the main factors.. I've never seen a good deal on Ebay or Amazon but you never know..Best of luck!

### Reply 10:
Do you mean that you do not know your electricity cost?

### Reply 11:
Let me see there is so many places on the Webb some i wouldn't send my worst friend to, some i would recommend to any one.But start with <link> for the best prices . or <link> may cost more but some times if your a lucky one you get some really nice deals there . but its rare there any more .or do a Google search.if you use Google be careful .

### Reply 12:
<truncated> Kijiji. I would only buy direct from those three ASIC producers. I have personally bought form Bitmain and Rockminer twice, each time arrived with in a week and preformed EXACTLY as advertised.

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8868,"Date: 2015-02
Topic: miners running wirelessly in an outbuilding?
### Original post:
Just wondering if it's possible to run a miner (notably an sp20) remotely in an outbuilding with wifi access to my router? How would this be done?

### Reply 1:
yes it works. Use an access point and plug it into a hub. Plug sp20 into hub. As long as you have power in the outbuilding and strong enough signal from wireless, you are good to go. I've had 8 s-1 units running that way last year.

### Reply 2:
would a 150mbps access point be enough? And I can't just plug the miner into the access point, I need a hub too?

### Reply 3:
I was doing it in 2011. You need a wireless access point. <link>

### Reply 4:
Did that forum stop working in 2014?

### Reply 5:
I've done this as well in my detached garage, just get a wireless extender and hook it up to a cheap switch in your outbuilding then use the network ports on your switch to connect to the miners. Its mindlessly simple to achieve.

### Reply 6:
Images are not showing in the bitcointalk forum<link>

### Reply 7:
Could I use this: <link> just hook the sp20 into it?

### Reply 8:
Almost all routers can be turned into an access point. Example: <link> I think you can buy a simple USB dongle to connect the SP20 to your wifi. Check that first if you only plan to connect 1 SP20.

### Reply 9:
I run a powerline adapter from inside my garage to the house. Works like a charm. The plug you use should not have a switch or be spliced or be part of other chains. <truncated> <truncated> adapter->48port switch->miner

### Reply 10:
+1 different brands, but same results

### Reply 11:
don't know this might help you find the right powerline adapter <link> Good luck

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9583,"Date: 2015-12
Topic: Enermax TwisterStorm
### Original post:
<link> Would you recommend it ? I bought one but while I'm waiting I want to be sure.ENERMAX TwisterStorm - Super 3500 Max RPM Twister Fan - Shift Speed Control (1500/2500/3500 RPM), Twister Bearing, Black - UCTS12AThe specs are the following ; Overclocking mode ; 2500 RPM115.75 CFM30 DBTurbo mode ; 3500 RPM154.53 CFM38 DB

### Reply 1:
Recommend it for what?

### Reply 2:
Well... its got a 160k MTFB = 18 years 24/7.

### Reply 3:
if you're planning on using it for cooling a setup 24/7. It is best to use a server fan instead of a regular computer fan as it will most likely last longer. But it will probably be louder.-- As a general commentDogie has a good point. Thanks

### Reply 4:
For a S5, quieter job and keep performance.

### Reply 5:
it may be good for that. many use this onebelow<link>

### Reply 6:
Yeah that one or the noctua...still I think the TwisterStorm has better stats and you may control manually the RPMThanks for your time.

### Reply 7:
I have the 3000 rpm noctua it is not that good on the s-5

### Reply 8:
ah yes ? Allright. The noctua and the TwisterStorm are about the same...Will wait to receive it and if it worth the shot ill make a review.

### Reply 9:
Please do. On paper it look more performant than the S1 fans i use on some of my S5. Having a cooling upgrade while reducing noise produced would be a relief, but they look kind of flimsy compared to the fans that really does the job.

### Reply 10:
Yep I made a lot of search and on paper the twisterstorm seem way better... When I'll receive it i'll make a little something.

### Reply 11:
Twister bearing, aka ""rifle"" ""hydro"" etc is nothing more than a fancy sleeve bearing type.I recommend AGAINST any version of a sleeve bearing on a fan.Manufacturer MBF ratings from most fan makers tend to be wildly optimistic, assuming lab-level CLEAN AND COOL conditions among other things - ball bearing fans tend to be the ONLY ones that actually achieve their rated MBF in REAL WORLD usage, and even some of THOSE are rated somewhat <truncated> one of the reasons ""push"" is almost always better than ""pull"" for cooling - the ""pull"" configuration runs the fan a lot hotter, making it a lot more likely to overheat and fail faster.

### Reply 12:
Thanks for your though, I'll take it in consideration when ill receive and test it.

### Reply 13:
It should be fine, those fans apparently are easy to clean, which is where the real problem is for real world life time of the unit. (The item description mention that the fan is easily detachable for cleaning)Its like those GPU fans i have on my 280x, i just pop them off, clean them with a qtip, at a speckle of lubricant and they run like knew for another 6 months. (And again, 3 times now)

### Reply 14:
I guess there should be a section here about Miner Tuning lawlz.

### Reply 15:
I vastly prefer fans that don't NEED cleaning, as fans that get dirty and stop running tend to KILL electronic gear before you get the chance to notice the fan died.Ball bearing fans are a TON better at ""don't need cleaning"" than ANY sleeve-bearing or varient design, as they're designed to NOT NEED LUBRICANT JUST TO RUN AT ALL.I'll take a ""40000 hour MBTF"" Delta over any ""160000 MBTF"" piece of junk <truncated> type design, as the Delta might actually last that 40000 hours where the <truncated> type design will be lucky to make 10000 before it locks up the first time, and will probably have completely died before 20000.

### Reply 16:
still you can remove fan blades of the twisterstorm...lot easier to clean.

### Reply 17:
Oh no, you have to clean it every 416 days, thats a shame.(?)Yes i clean my fan once a year, and for that year, they make no noise. If you prefer using fans that are 8-10 time louder because they will do your 2 years of miner use without slowing down (they will just rattle even more loudly), then thats a-ok with me.But i don't see how you can rationalize quiet fan lasting 1 year without needing maintenance is ""crap fans"".

### Reply 18:
I've had too many Deltas last 10+ years without NEEDING ""cleaning"".Can't say if they'll last longer than that, I've still never had a Delta die and the oldest of them I've got would be around 12 years old.I've had WAY too many shit ""sleeve bearing"" fans that didn't even make it to ONE year before they jammed up and died - and caused the gear they were on to overheat and die as well.You're ASSUMING I have only used Deltas on miner gear - I was using them years before Bitcoin EXISTED.Does ""Alpha 8045"" mean anything to you?No, I didn't use the 80cfm screamers, but I do still have some of the one-step down 68CFM Deltas, currently in use in 2u rack-mount cases.I do miss the days of Rotron metal-frame fans - I've got a couple of those that I bought used back in the 1980s THAT ARE STILL RUNNING.THOSE were good, reliable fans.Also, not all Deltas are super-noisy, just the ones that move massive amounts of air - as are ANY of the few 120m<rest of thread truncated>
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16992,"Date: 2011-11
Topic: GUIminer disappeared?  WTF?
### Original post:
A little insight would be appreciated.I am trying to re-install all my Bitcoin stuff on a new harddrive. Bitcoin client is up and running and re-downloading the blockchain as we speak.I also reinstalled GUIminer. The first time, I extracted it to my desktop and opened it and began mining with no problems. Then, I attempted to move the folder from the desktop to my program files folder. Then chaos ensued. First, it told me I couldn't transfer the folder because I forgot to close my miner. So, I closed my miner. It still wouldn't let me transfer the files to that location.So, I restarted my computer and tried a fresh extract to the program files folder. It still wouldn't let me .... I get some long diagnostic message essentially telling me to fuck off and that it only likes to be extracted to the desktop.So, I re-extracted to the desktop. The problem is, when I try to open GUIminer, the program appears on my task bar but it won't open so I can see the app on my screen. I even tried tossing my entire GUIminer folder in the recycle bin, dumping it, and redownloading and extracting. The same problem keeps happening: GUIminer appears as running in my task bar and in the processes list in<rest of post truncated>

### Reply 1:
Update: After repeated failure, I tried the obvious: Copy and paste useless GUIminer files from my laptop to the new harddrive. Not only did this work, but it let me create a GUIminer shortcut on my desktop linking to my program files folder.I still have no idea why this idea worked but downloading and extracting didn't.

### Reply 2:
I think this happened to me on my Windows rig. What I did was opened up the task manager: Ctrl+Shift+Esc and went to the Applications tab. Then I right clicked on Guiminer and clicked Maximize. Then it showed up!

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12067,"Date: 2012-10
Topic: BAMT Running, but Says Not Config'ed
### Original post:
I have BAMT running, but it seems that it keeps the ""no GPU detected"" screen up.I am getting a full load off all the cards but cant use the web monitor nor does the BAMT home screen update with stats.I have tried restarting the computer, changing the config, restarting the miner process, stopping and starting the miner process.Is there a command or process to force a recheck?Thanks in advance-elrodvoss

### Reply 1:
iceweasel/web monitor will not show up if you dont do ""do_bcast_status: 1"" check out other commands for BAMT. <link>

### Reply 2:
I have the same issue with one of the nodes. I believe it has to do with the monitoring scripts not understanding the APU, which don't report fan monitoring data... Decided not to fix it, as the unit is mining. Using my pools worker monitoring to check if the node is mining or not.

### Reply 3:
Where do u go to enter/change this setting cause its not in the bamt.conf file?I do have pool monitoring set up but since i have this system submerged in oil, i need the temp monitoring at least till i can get the cooling set up to handle all the cards without the mobo resetting.Thanks.

### Reply 4:
submerged in oil?? do what? In BAMT config file, you will see a line like this do_monitor: 0 (look for this line) do_bcast_status: 1 (add this to config file)then run fixer, then restart. hollar back if you need more help.

### Reply 5:
Ok. I knew i didnt have that command linein there, so ill add it in an hour when i get back and see what it does.As for submerged part, i was at a crossroad. I had my bfl units preordered but still several months wait. So i desided to get another rig going while i wait. But the one rig i have is loud and has fans blowing for cooling. I needed to put it in garage so its not taking up more room in house but a normal rig would invite bugs, mice, etc. So i desided to do a project that i saw years ago and submerge the whole thing in mineral oil.Its heavy as hell but very very quiet and cost some $$$. Downside is the radiator cant handle all the cards running at full power. But i have more radiators on the way.Ill write up another post with pictures when i get home. Typeing this on phone is annoying to say least. Thanks for advice.

### Reply 6:
I got the command line and its working fine now.Thanks Also here is my posting on my oil submersion rig.<link>

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12094,"Date: 2012-10
Topic: CGminer v2.8.4 on Broadcom based DD-WRT / OpenWRT
### Original post:
Upped to 2.8.4

### Reply 1:
So which router should I take for my ztex boards?I have a tplink mr3420 but I'm unable to get it running (comiling etc) Is there someone that has a running setup for a router to connect ztex boards to it?

### Reply 2:
Someone has got a DD-WRT router working with Ztex.As for the tplink... will not work with this here binary.

### Reply 3:
Works beautifully, thanks so much for doing this!

### Reply 4:
i did everything that you described in your tutorial .... is there an easy way to check if everything is ok with cgminer? How do i know if cgminer is working right ? does someone know or have windows version of the program called anubis ..... or at least a tut how to install it on windows?

### Reply 5:
enter Code:screen -r at the prompt on the router and/or check to see if the pool is showing sharesand when your finished watchingenter Code:CTRL-a dto detach

### Reply 6:
<truncated> screen -rThere are several suitable screens on: 17077.miner (Detached) 13962.miner (Detached) 12940.miner (Detached)Type ""screen [-d] -r [pid.]tty.host"" to resume one of <truncated> that gives me this ?

### Reply 7:
try screen -r 17077 screen -r 13962 screen -r 12940or something

### Reply 8:
that gives me this output ...So i have to install anubis to see if its working?

### Reply 9:
reboot it first, you should only have one instant of screen running

### Reply 10:
screen -r 17077.miner screen -r 13962.miner screen -r 12940.miner

### Reply 11:
after the reboot when i type screen <truncated> No such file or directoryit stays there dooing nothing untill i ctrl +c it ?Service shows cgminer running (green)

### Reply 12:
Sounds like the serial drivers aren't working/installed. Basically It can't find the devices for whatever reason.

### Reply 13:
im a ztex user, do i need them ? it's the seriealsmodules part ?

### Reply 14:
they are installed and running. service shows them green: What did go wrong?

### Reply 15:
Ah, ztex doesn't need the serial modules, so you can stop that service.You can comment out the bit in cgminer.sh which does the <truncated> <truncated> <truncated> true ; do# DEVS=`find ${TTYDIR} -type c -name ""${TTYNAME}"" | sed 's/^/-S/' | sed ':a;N;$!ba;s/\n/ /g'` NOW=""`date +%Y%m%d-%H%M%S`"" <truncated> <truncated> -c ${CONF} --api-listen ${DEVS} -T -q 2>${LOGFILE} sleep 30done

### Reply 16:
Remember the bitstreams portion also.

### Reply 17:
<truncated> serviceService: named <truncated> disabledService: xinetd <truncated> Service: automount <truncated> Service: reloc_syslog <truncated> disabledService: pixelserv <truncated> disabledService: serialmodules <truncated> disabledService: soundmodules <truncated> Service: portmap <truncated> Service: unfsd <truncated> Service: zabbix <truncated> disabledService: lig<link> <truncated> disabledService: pound <truncated> disabledService: samba <truncated> Service: vlig<link> <truncated> disabledService: kaid <truncated> Service: asterisk <truncated> disabledService: nzbget <truncated> disabledService: transmission <truncated> disabledService: fixtables <truncated> Service: stophammer <truncated> Service: asiablock <truncated> disabledService: birmablock <truncated> disabledService: twonky <truncated> disabledService: watchprinter <truncated> Service: worldblock <truncated> disabledService: siproxd <truncated> disabledService: stophack <truncated> Service: cgminer <truncated> <truncated> service cgminer on Enable service ""cgminer"" <truncated> Enabled service: ""cgminer"" <truncated> serviceService: named <truncated> disabledService: xinetd <truncated> Service: automount <truncated<rest of post truncated>

### Reply 18:
I have no idea why you have three instances running.Can you try connecting to each of them in turn with screen.And work out how to disable two instances...This is why I have the big warning at the top of the readme... it's not trival!

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16374,"Date: 2022-11
Topic: Investing in mining during a bear market
### Original post:
Is it safe to invest in bitcoin mining right now, given that we are in a bear market? Is it safe to invest in anything other than bitcoin mining (tokens/nfts) if not? I intend to make a long-term investment with no plans to liquidate anytime soon, and I have the ability to purchase up to 20 S19 Pro 110T (just an estimate).

### Reply 1:
The bear market will end sooner or later, you can simply invest your available funds in the purchase of bitcoin and just store it, because if you are in the territory of the European Union, then investing in the purchase of miners may face a problem of restrictions in the future, judging by what they offer: <link>

### Reply 2:
It's not that it can't be profitable to mine bitcoin in the current bear market. A few days ago, the total hash power of bitcoin reached its all time high. That wouldn't happen if mining couldn't be profitable. Whether mining is profitable for you or not highly depends on the price of electricity in your country. You can use mining profit calculators like whattomine or asicminervalue to see whether it's worth to mine bitcoin for you or not.

### Reply 3:
If you compare it to cloud mining then it's safe to invest in ASIC mining. Cloud mining is likely fake and most of them are scams you must be aware of those things.20 s19 pro that is many you can't just run them directly to the home outlet you need to have a proper setup of your small mining farm and before you invest take note of your current electricity rate like other said above.If you to get some idea then I suggest to read this thread below.- <link> you are looking for an ROI calculator that includes hardware and power cost then check this one below.- <link>

### Reply 4:
Welp, If I were you I would dca into bitcoin itself. The breakeven/ROI point would be near the halving. If you buy the equipment your committed to the journey.

### Reply 5:
these kinds of questions wouldn't even deserve so many answers. It seems like a question: I have the money to buy a Ferrari, do I buy it? With the money you can do whatever you want as well as buy 20 S19s and leave them in the garage packed.You didn't tell us if you have a place to keep them (which is very important as they are very noisy), if you have adequate electrical system. How much and if you pay for electricity.If you have free electricity, sure it's worth it, but you haven't given us any useful information.

### Reply 6:
Why does almost no one provide us the most important bit of information needed when they ask this kind of question: What is the cost of electricity where they are thinking about mining? That is the single most important thing to factor into a decision to mine....Only if you have low cost electricity does one move on to the next question: Do you have a place to setup and run these VERY noisy, hot miners? Do remember that all that power going in comes out as heat. A LOT of it...Like most things in Life the answer to your vague question is not a clear cut, binary, yes or no. You need to think about all it entails.

### Reply 7:
ASIC is not a mining farm of several video cards that can be installed at home or in an apartment. The noise from ASIC will disturb you and your neighbors. If you have cheap electricity and are willing to spend money on soundproofing your home, then you can try. But I would rather buy bitcoin now.

### Reply 8:
Stake coins are mostly not worth investing they are slowly dying after they are listed. Also, tokens are not a good option it would be safe if you can buy BTC or like dogecoin or any altcoin that has the potential to increase in value after the block halving.Mining is optional if you have cheap power or free power and then it will give you more profit if you hold them until the day when the price reaches new ATH it always happens every block halving.

### Reply 9:
During the bear market, you are most likely better off investing in Bitcoin directly, i.e., buying. However, during a bull market, investing in mining can be a viable play and is worth looking into.

### Reply 10:
So if you already have a mining rig setup, would it be better to hold off mining during a bear market and just trade coins while waiting for the bulls to come back?

### Reply 11:
It's safe to invest in a standalone miner depending on how much you getting it, what I will never do is invest money on graphic cards to mine altcoins because this is zero ways of earning any profit even if you have free power in your house, Asic miners are good to buy, still profitable, but all depends on how much you are buying.

### Reply 12:
By comparing speculation and hoarding, we can find that if the price of bitcoin does not rise, then mining can be profitable, and if the price of bitcoin rises, mining will bring higher returns. Whether buying a mining machine or buying a cloud mining package, it reduces the time investment while avoiding the psychological fluctuations ca<rest of thread truncated>
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17136,"Date: 2012-05
Topic: Bitcoin Wallet Transaction Error? HELP!
### Original post:
Was purchasing some Steam games for Bitcoin and this error message popped up:""Error: The transaction was rejected. This might happen if some of the coins in your wallet were already spent, such as if you used a copy of wallet.dat and coins were spent in the copy but not marked as spent here.""Happened in this order:1. Sent 2 BTC which went through fine and showed up on the blockchain.2. Went to send the remaining 4 BTC owed and then I got some sort of runtime error and had to restart my computer. Fairly certain that the error occurred due to low disk drive space. (A transaction with 0/unconfirmed status shows -4.00BTC from my wallet although nothing shows up in the blockchain to the address I sent it to)3. Waited a bit for confirmations to show up on the first 2 BTC (2-3 confirmations now) and nothing about the 2nd transaction appeared on the blockchain so I went to re-send the 4 BTC and got the above error message. My wallet now shows a 2nd -4.00 BTC transaction that didn't show up on the blockchain either although my wallet balance is showing 4BTC less as well.Google'ing the error message has some results but no actual explanation of why or how to fix it.----Edit: Apparently one o<rest of post truncated>

### Reply 1:
<link> 4 BTC are MIA...

### Reply 2:
Most likely your client resent the orphaned transaction after a period of time had passed and it didn't show up in the blockchain, after restart of course.

### Reply 3:
So if it resent it does that mean that the recipient will have something show up in his bitcoin wallet? Or will the coins just be lost into the ether?Also, I noticed that it had a pink warning message on the blockchain mentioning a double spend or something like that. The 2nd 4BTC transaction remains unconfirmed though.

### Reply 4:
The already confirmed transaction is going to stick, the second transaction that triggered the double-spend is going to be ignored by the network forever. If it all happened as you said, the exact same inputs should have been used for two different transactions; but I now question your story, since this shouldn't be possible accidentally. If the second set used overlapping transaction inputs, but not the same set, the other inputs are functionally tainted unless & until you can get a guru to dive down into your wallet.dat file and destroy the second transaction, so that it will stop resending it to the network.I am not that guru, and it's probably not worth it.

### Reply 5:
Well, it's been half a day later and no changes in the wallet (I do have to admit though that I don't recall exactly how many BTC I had before I started sending to zakcy for the Steam games), but on the blockchain the 2nd unconfirmed 4BTC transaction no longer shows along with the message about a double spend and warning to not accept sends/receives from the person who initiated the transaction (ie. me).Perhaps the original error message popped up and the coins were never actually deducted (best-case scenario) even though my wallet shows the transactions or the coins are just gone (worst-case scenario).Feel free to question my story if you like but it still remains that it happened exactly how I explained things. I'm sure people like to troll on the Internet for no reason but I would hope it'd be a bit far-fetched to make such a long and somewhat detailed post trying to figure out what happened and how to prevent or fix it if it does occur again to someone else or if it's some fault in Bitcoin as a whole.At the least, I can be somewhat relieved that it only involved 4BTC (which sets me back about 8 days worth of mining) as opposed to a far greater amount.

### Reply 6:
Oh man, you removed your bragging rights by censoring your balance . Run in the console bitcoind.exe -rescan . It rescans the blockchain(rescan, not download!). It might help.

### Reply 7:
censoring your balance is useless, considering I can just look up your bitcoin address in the blockchain and find out your <truncated> two addresses you used to send bitcoins to that guy. :p

### Reply 8:
I'm that guy!Luckily, it fixed itself a while after the mishap. The unconfirmed transaction disappeared from the blockchain trackers.

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10912,"Date: 2020-12
Topic: Canaan Avalon 1066
### Original post:
Surprised no one else brought this up yet but Canaan is possibly going to announce a 3 board design of the 1041 likely called 1066 later this month for October release. initial spec (not final): 50ths, 3200w.

### Reply 1:
I saw an email where Steve said he had plans to announce a new miner in October. Is that what this is? Makes sense for them to have a more dense unit as well, but I was excited to see something entirely new again. Spoiled by all the launches this year i guess.

### Reply 2:
@steamtymeYep,the email was about the A1066.They are joining in the '>3 kW unit game'.

### Reply 3:
I need one or more for testing.Their a1041 is pretty nice for home mining.my hope is it is a two speed and the low speed is like 31/37 for the a1041 that would be 42/50 for the a1066 and it would be quiet for the home. miner on the low speed.I sent an email mentioning this thread. Maybe Steve will post some good info here for us.

### Reply 4:
Okay, was definitely a logical step to have the same product offerings as everyone else. I'll just have to wait for the 11** for something entirely different. It's hard to get excited about LPM when if you need it the pricing isn't something you can overcome. You have to give up a lot of hashrate for most machines running it. I would still like to see Canaan bring out a first to market product efficiency wise. The reliability has always been great, but with how fast things seem to move they just outlive their profitability. I missed out on grabbing the 1041 as it launched shortly after I had upgraded everything, but we'll see how things go in the next 6 months.

### Reply 5:
Depends on what Lpm does.If you drop from 56th to 29th like the whatminers m21s the low speed is a wait til next year optionIf you drop from 37th to 31th like the Avalon a1041 with decent power per th savings it is a viable option at about 8 to 11 cent power.I would sit and calculate the math but I am on the iPad not the pc.There is a price per kwatt that the a1041 is just as good on low speed as top speed.There is not one on the whatsminer m21s.If someone wants to play with numbers to show the right price per kwatt. It would be nice.the a841 was a good machine that did not outlive itself too quickly.

### Reply 6:
Right around $0.10 per KWh.

### Reply 7:
thank you I was on my ipad and it was harder to do.my ballpark 8 to 11 cents a kwatt was fairly close.I could really use 5 or more a1066's set to lpm if they did 42th at 2400 watts vs 50th at 3200 wattsI am still short gear for the Clifton build. Prices are nuts wait time is crazy.Maybe I can get some of these to help fill the center in.If these do 3200/50 = 64 watts a th at high and say 2400/42 = 57 watts at high I would grab some.

### Reply 8:
That would make sense since the those #s give the same efficiency as the a1041. Question is will the $/TH be lower than the a1041.

### Reply 9:
Yeah it did hold on nicely, mine was still pulling a small profit when I donated it. It really came down the commands that helped dial in it's efficiency. The fact that everything came to a grinding halt last year helped a lot of gear extend their lifespan. You are right about there being a point where the earnings equal out (10.7 cents). This becomes a whole other ballgame though if you aren't selling instantly as you mine, kind of the same as when people mine at a loss. Then there's the point that I wouldn't recommend people buy new gear to mine near 10 cents, tough spot to ever see an ROI. I think you meant low on the second set of numbers. Did you and/or Buysolar look at going out to their Customer Conference in October?

### Reply 10:
Yes that is correct. 57 watts on low speed.Buysolar was pricing tickets. He has ask Steve of Canaan a few questions about it.Not sure we go. Me most likely no. Buysolar is maybe.

### Reply 11:
Wow, they were supposed to announce more later this month. Guess I gotta pass this along to web.

### Reply 12:
$1600 for October batch (if you take 60+ units). Nice price....Does not mention a low power mode in the specs though.<link>

### Reply 13:
The price seems off to me. I would have loved to get in on the action but ever since the crypto scene has started getting scrutiny in India, getting a crypto-miner into the country. I have access to electricity as cheap as $0.08 @Phillip can you confirm if, hypothetically speaking, could make a decent ROI on this if someone bought it at $1700? I'm assuming the $100 extra because that's the least avg price required for shipping & stuff.

### Reply 14:
Yeah at 8 cents if you get it into India it is a borderline roi.

### Reply 15:
I was somewhat active in mining way back in 2012 when I didn't have a profile here. And by active I meant I read.I started off early in 2012 with mining on my PC through some small pools and then I think I moved to Bitminter later on, that was as long as cpu mining was profitable. For me that was until around the last f<rest of thread truncated>
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13461,"Date: 2015-12
Topic: KNC Neptune power cycle cubes
### Original post:
I am looking for a SSH command that will power cycle the Neptune cubes.Does anyone know how to do this?

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11670,"Date: 2011-11
Topic: AMD Catalyst 11.10 Driver
### Original post:
AMD Catalyst 11.10 Driver<link>

### Reply 1:
AMD Catalyst 11.10 Driver<link>

### Reply 2:
Thanks for the direct links, I just hate how AMD makes us download (and install!) a downloader program first.Edit: 100% CPU bug still present with my dual GPU setup.

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22942,"Date: 2019-05
Topic: I see strange IP addresses in ""my connections"" tab on router
### Original post:
Guys, I've bought some S9j's recently. They are working fine, but I've noticed one thing. One of the machines has too many connections beside the pool ip address. It connects to the following addresses: 217.146.8.70 and 37.252.254.172. Is that OK? What should I do?

### Reply 1:
It looks like someone monitor your miner or your PC check this detailed IP location and host name below. Another one is thisDo you have installed teamviewer in one of your PC while you scanning these IPs?Try to remove it and scan it again let's see if it will remove this 2 IPs.

### Reply 2:
@OP, is this a new miner directly bought from Bitmain or was it bought used (and from whom)?If bought used then this is a prime example why it must be said to ALWAYS reset/reflash ANY used miner because the the world is full of assholes looking to steal from anyone they can...

### Reply 3:
It was sold like it was new. This one was the only different both visually (different fan on the back) and batch number.I will flash it. So far it's working as it is supposed to.

### Reply 4:
Beware on 2019 firmware just want to let you know that it may disable your SSH access if you flash it with 2019 firmware so make sure to flash it lower than 2019 firmware.

### Reply 5:
I've never heard of RIPE / RIPE Coordination center. My suggestion is to first block those IP's on your firewall. Then factory reset the miners by flashing the NAND with an SD card.<link>

### Reply 6:
Thanks! Also would you block everything except pool ip or leave some other address allowed?

### Reply 7:
I would just block what shouldn't be there.

### Reply 8:
This is not a ""may""; it is widely confirmed. Only use firmware up to 2018, such as December 2018 or earlier.Or switch to Braiins OS, the open source firmware replacement. you won't regret it.

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23397,"Date: 2021-01
Topic: Need Help with T3H 50Th/s
### Original post:
If admin, admin doesn't work try dragonadmin for user and password or admin on user and dragonadmin for the password.If still doesn't work try to access the miner through telnet/SSH and change Try this method from the link below.- <link> you can't log in with ""username: root password: innot1t2"" try other passwords (blacksheepwall, or t1t2t3a5)

### Reply 1:
Hello, I was stupid enough to reset my web browser and the password for myminer is gone, have not logged in for maybe a year, and now i wanted to check the temp and fan speed because it started to sound a bit wierd. There is a Reset button on the back, i have tried to hold it for 5 - 10 - 15 sec hoping it would bring the miner back to factory reset so i could log in with Admin admin.Is there a way to log in again ? how do i do it, ive sent a few emails to innosilicon they take gaes to respond.Anyone here who can help me ?Thanks.

### Reply 2:
First while shitty you can't access it and check the gear out, when did you last clean it?? Could be as simple as that. Power off, clean it and see how things go.I'm guessing you set a custom password? Similar to the vein Mikey is on. Did you log into the miner from various devices? If yes, and you weren't synched across all of them when you reset your browser then you likely saved the password and username. I've had to do this with a few websites and stuff I don't regularly check. From a non reset device - You can access the browser settings ""..."" Top right corner of the browser then -> Select settings -> then select passwords. Here you can try searching for what the username might have been and then get the accompanying password.Apart from that you'll likely be waiting on Ino to get back to you. Weird you couldn't get it to factory reset. I've never used that gear. If he is out of luck anyone know if he could regain access by flashing new control board firmware?? That should essentially reset it to factory. I'm thinking last resort as it's a bit extreme for a working piece of gear.

### Reply 3:
If you happen to be using Chrome there is a chance that you can still retrieve the password and username for the miner, but this will require a logged-in device with the same account other than the one you reset, also it should have not been connected to the internet after you reset the browser (the deletion wasn't synchronized), if you have that, let me know and I'll tell you how to do it (it's a bit of an effort but would be worth it).

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9934,"Date: 2016-08
Topic: hi guys i have electric 3 phase how much can i put each 1 phase take miners s9
### Original post:
hi guys i have electric 3 phase how much can i put each 1 phase take miners s9i need know how much take 1 phase 10 miner 12 miner 15 miner or more . down please tell me

### Reply 1:
In here, 1 phase is about 62A, I run about 8unit of s9 without a problem, but the wire need to be 16mm cable.

### Reply 2:
The question is impossible to answer without knowing your current limits. 100A per phase? 200? 50?If you don't know enough to know how to solve this question for yourself, I'd seriously reconsider spending money on... actually, pretty much anything.

### Reply 3:
^ What he said. You don't have enough information or knowledge yet.

### Reply 4:
3 phase at what voltage (volts) and what is your Max current limit

### Reply 5:
Here in the UK most properties have 100a 240v single phase supplies, however some larger buildings have 100a three phase 240/440v supplies which (in theory) you could hang 16 Antminer S9's off each phase giving you a total of 48 units.HOWEVER...If you suddenly butter up your three phase supply and max it out, you will cause the local substation to strain and could overload the service fuse for your street. (normally 400a) Most power distribution systems are not designed to be continually ""maxed out"". Also if you pull let say 100a on one phase and nothing on the others it will cause an abnormally high neutral current and can in some cases cause the local substation ""veer off"" 50hz frequency. (can't remember if it pulls it up or down, that information escapes me)Hope this information proves useful and that you stay away from the three phase equipment!Edit: also the heat load from 48 Miners would be biblical, which you would need to take into accountKind regard

### Reply 6:
3-phase is pretty nice if you know how to manage it. I had 110KW of miners and general shop circuits running off 208V 3-phase (120V line to neutral) with only 6A of neutral current last time the utility guys came out to check. But that's not a n00b installation either, like this guy would probably end up with.

### Reply 7:
I think he is from IndiaElectra city bill <link>

### Reply 8:
thanks everyone for the helpi have 3 phase each with 80A switch for each phase the street fuse has 100A for Each phase in this case how many miner can i load for each phase thanks

### Reply 9:
13 miners (1300W) on each phase (230V)Total 39 miners . But the 80A main fuse can begin to turn off , without extra cooling. I recommend a separate cooling fan for main fuse or less miners.

### Reply 10:
IMO you need some professional help or otherwise you could end up burning everything.

### Reply 11:
Which S9 is also needed, what loss of efficiency the power supply does also needed (add roughly 10% to get an idea). The 14 TH/s uses 1,375w + 7% seems a bit optimistic for most power supplies (Titanium is min. 90-94% at 100% load), while the 11.85 TH/s uses 1,175w +... (that's about a 15% difference in power). At 1,500w each, that's about 12 x 3 = 36 at full load, but I don't think a 80A fuse is supposed to handle that full load 24 hours a day.

### Reply 12:
thank you so much

### Reply 13:
I had 2 on each phase. But it depends on your amperage, how good the lines are, etc

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  },
  {
    ""hardware_name"": ""Antminer S9"",
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20470,"Date: 2015-06
Topic: Needing help with Antminer U3 /Raspberry Pi
### Original post:
HiI'm an absolute beginner with mining and Bitcoins.I had a Raspberry Pi lying around and thought I could use it to mine, so I bought an Antminer U3, and now I'm clueless on how to use the damn thing. I made all updates on my RaspPi but I dont know which version of cgminer to use, how to install it or how to configure my Antminer.Anyone know a good tutorial? Anyone can help me? I feel quite lost.

### Reply 1:
I already tried to follow this tutorial but it doesn't work<link> get the following:<link> should I do?

### Reply 2:
Use Minera. It is easy to setup and good for Raspberry Pi.Thread: <link>

### Reply 3:
Thanks for the quick answer.I'll look into it. Is it comptaible with the Antminer U3?

### Reply 4:
AFAIK yes.

### Reply 5:
Ok I installed the latest Minera version, accessed it from my computer. It's very nice btw.How do I make my U3 to start mining? Just plugging it ? No need to configure it, no need for drivers?I'm very new new to all this and I must admit I'm a bit confused.

### Reply 6:
Use CGMiner in Minera. If it isn't there by default, download it and also download Zadig[1] and install both. After installing, you only have to choose pool, username and password. You will ne able to run it.[1] <link> Read README[2] and use default url to access settings. It is good to change default password.[2] <link>

### Reply 7:
Isn't Zadig a windows software?I chose a pool, username and password, but it's like my U3 won't start. It is listed, but it won't work.What can I do?

### Reply 8:
Sorry. My mistake. I messed up my mind.Which miner did you choose? CGMiner or BFGMiner?

### Reply 9:
I chose cgminer.I'm a bit confused with the settings... What is Append JSON conf (-c <truncated> should I set the other on/off buttons? (Script, auto login, auto-debug...)My miner seems to be recognized, but I can't get a hash rateAnd what exactly are error/rejected rates? Thanks a lot for your answers!

### Reply 10:
Have you read README?Anytime.

### Reply 11:
I read the Readme and can't find the answers I'm looking for...Can anyone help me figuring out what's wrong?[2015-04-19 15:47:17] AU30: GetResults (amt=0 err=-7 ern=25) [2015-04-19 15:47:17] Icarus Read: No data for 61 ms [2015-04-19 15:47:17] [thread 0: 21474836475 hashes, 89527.4 mhash/sec] [2015-04-19 15:47:17] Popping work from get queue to get work [2015-04-19 15:47:17] Selecting pool 0 for workI also have 100% error, and I don't know what to do <link> gets so frustrating... I should have studied the topic better before buying this stuff

### Reply 12:
If you're still looking, I followed the guide here, in the 2nd or 3rd response, to get my U3/RPi setup working:<link> that will work for you? I set up an account with slush's pool, and use the info provided on the site to configure the pool and such.

### Reply 13:
Hey man, you are trying to hash in a pool with Scrypt algo (Altcoins) while your hardware is able to hash only in SHA-256 algo! Change your pool to hash in SHA-256 (Bitcoin)

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4254,"Date: 2012-12
Topic: ¿When mining became pure speculation?
### Original post:
What happened? For people who are dedicated to engineering has gone into the field of speculation?All antique hardware manufacturers (less ztex) are immersed in a world of speculation, hardware prepayment nonexistent, waiting lists, something like arms races with the specifications of their products, shareholders in mining clusters very opaque.At that time engineering has given way to ponzi schemes?How I miss the days when you could talk about mining without entering Taliban style ideological battles.

### Reply 1:
There will still be this stuff in the future. Some people will be doing all sorts of mods and cooling to try to get more out of ASICs, it'll just be to a lesser degree. Additionally, the real discussions might end up switching to which pools can adapt to support new firmwares the quickest, and what mining protocols or modifications to them work the best.I think Bitcoin mining started getting less about helping each other and more about helping yourself once FPGAs came into play and there weren't endless supplies of relatively cheap video cards anymore. The more up front cost, the more emotion is on the line to get that ROI. Some of us are vested in mining to the tunes of several thousands of dollars, others maybe only hundreds. It's not a game of silly digital currency anymore, and it's quickly becoming ""not just a hobby"" too.

### Reply 2:
mining has always been speculationin the early days the speculation was would it ever be worth anything - then someone bought some socks and a pizzathe volatility of the market also, up to $32 back to $3 and now $13ishyes mining is becoming more ""professional"" and less hobbyist, but in the real world a lot of successful businesses have started that way We are still speculating on Bitcoins future value though, no matter our investment into hardware or our status as hobbyist or professional

### Reply 3:
Mining is purely speculation because a lot of stuff are about to happen. Give it a few months when ASICs are shipping from a few vendors, the network and price stabilize, and I expect hope things will go back to normal, and the forum can be a helpful place again.

### Reply 4:
Now you're smoking the ganja.

### Reply 5:
I may have had a few pints already, and there's more to come in the coming hours.

### Reply 6:
Engineering is speculation? Since when?

### Reply 7:
Can you predict the future BTC exchange rate? No. Therefore mining is speculation.

### Reply 8:
The mining basically exists for the bitcoin may exist, if you want to sell your bitcoins in another currency that is not essential to being a miner ...

### Reply 9:
Bitcoin in general is a relatively risky / speculative market, even if you don't exchange bitcoins. If Bitcoin loses its value, you won't be able to buy goods/services at the BTC price you think they would be priced at.

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21968,"Date: 2017-12
Topic: Overclock BFL Monarch
### Original post:
I'm using a Butterfly Labs monarch connected via usb serial on com12.Is there anyway to overclock this miner within BFGminer or by adding a command to the batch file?

### Reply 1:
I'm interesed too

### Reply 2:
Do you find a solution? im find a way to o.c my monarch to?

","[
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23913,"Date: 2022-04
Topic: Just started with a Gekkoscience Compac f
### Original post:
Does this mean I solved a Block?[2022-04-12 14:29:47.910] 0: GSF 0 - ticket value confirmed 0xf0/16 after 5000 nonces 2nd day with it! Just 1!Solo Mining on CKSolo

### Reply 1:
No, i'm afraid it doesn't mean that you solved a block:<link> have to realize that mining with such a stick results in an astronomical small chance of hitting a block... Odds are big you'll never ROI when you incorporate the electricity you'll burn... It's a nice learning tool, or a miner for a low diff coin, or a demo device, or a lottery device (but chances of winning said lottery are astronomically small!)

### Reply 2:
From where you just sent me...A ticket mask of 0xf0 means return all 16 diff nonces.16, 0xf0, 5000, 16.9, 15.9 }, // 800s Erlang=4.6x10-5 <- 16+ <truncated> 14:29:47.910] 0: GSF 0 - ticket value confirmed 0xf0/16 after 5000 noncesHow long before I know for sure?

### Reply 3:
THANK YOU GOD! FOR GOD'S GLORY!

","[
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    ""hardware_name"": ""Gekkoscience Compac f"",
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13681,"Date: 2021-04
Topic: Cross-compiling cgminer on Raspberry Pi
### Original post:
Hello,I'd like to compile a Linux AMD64 binary on my Raspberry Pi, so I can move compiled binary to my desktop and use it there.I am not sure what options should I chose with ./configure command. Can someone help?I cloned most recent code from git, and I am following steps from <truncated> -Wall -march=native"" ./configure <options>makeMy guess is that I should change -march to something else and/or add -host option, however, I am not sure here and I can't find any official info on this. Do I need to install extra libraries or packages to make AMD64 code on Pi?Can someone help? Thanks in advance.

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20662,"Date: 2015-10
Topic: ASIC Antminer S1 not really mining
### Original post:
My ASIC miner (Antminer S1 180GH/s) seems to be mining and shows things in the ""Miner Status"" tab but really, it's doing nothing. 0 Accepted shares and it's not showing up on the pool website.System Log:Code:Mon Dec 2 11:28:00 2013 kern.info kernel: [ 12.820000] Backport generated by backports.git <truncated> Dec 2 11:28:00 2013 kern.info kernel: [ 12.830000] nf_conntrack version 0.5.0 (962 buckets, 3848 max)Mon Dec 2 11:28:00 2013 kern.info kernel: [ 12.860000] usbcore: registered new interface driver usbhidMon Dec 2 11:28:00 2013 kern.info kernel: [ 12.860000] usbhid: USB HID core driverMon Dec 2 11:28:00 2013 kern.info kernel: [ 12.870000] usbcore: registered new interface driver usbserialMon Dec 2 11:28:00 2013 kern.info kernel: [ 12.880000] usbcore: registered new interface driver <truncated> Dec 2 11:28:00 2013 kern.info kernel: [ 12.880000] usbserial: USB Serial support registered for genericMon Dec 2 11:28:00 2013 kern.info kernel: [ 12.920000] xt_time: kernel timezone is -0000Mon Dec 2 11:28:00 2013 kern.info kernel: [ 12.940000] cfg80211: Calling CRDA to update world regulatory domainMon Dec 2 11:28:00 2013 kern.info kernel: [ 12.940000] cfg80211: World regulatory domain <rest of post truncated>

### Reply 1:
Can you get me a screenshot of the miner status tab? Are you solo mining? Basically if you're in a proper pool, you should be getting accepted shares. A couples per minutes. Give me more information

### Reply 2:
<link>

### Reply 3:
The reason is because you're pointing your SHA(example Bitcoin) miner to a Scrypt(example Litecoin) port(7777). BTC is 8888. Change your url to <truncated> and it will work.The proper url's depending on the algo are listed a bit down the page;<link>

### Reply 4:
Alright, I'll try that when I get home. It does occasionally mine script, just off and on... If I remember correctly, it wouldn't really mine BTC either. Like I said, I'll try it when I get home and share my results.

### Reply 5:
FYI a sha256 miner will never mine scrypt, ever. You may be seeing the miner trying to getwork from the stratum server but it doesn't mean it's mining. Don't take this as condescending I am just making you aware is all.

### Reply 6:
The miner is properly getting work and submitting shares back, but since its in the work algo, all share are abobe target. If you SSH into the miner and type screen -r you should see the shares being reported as such. Rejected, share above diff, over and over.As the user above said, its absolutely impossible for it to mine scrypt. Its an ASIC, the only single thing it can do is submit SHA256d hash. It has no Scrypt chips on board. Point it to the right pool and i'm pretty sure it will work fine.

### Reply 7:
Tried screen -r and my S1 responded ""-ash: screen: not found"" . . . do I need to be in a specific directory for this to work?

### Reply 8:
I see, my bad, screen is not installed on S1 by default and i am not sure about the proper instructions to install it.I get <truncated> opkg updateDownloading <link> server returned error: HTTP/1.1 404 Not FoundCollected errors:* opkg_download: Failed to download <link> wget returned 1.root@1S1:~# opkg install screenUnknown package 'screen'.Collected errors:* opkg_install_cmd: Cannot install package screen.Maybe someone more knowledgeable could help?Meanwhile I would recommend adding the S1 to M's Miner Monitor;<link> what it does. It does it through SSH using the cgminer api which i am not familiar with.

### Reply 9:
Thanks for the info VirosaGITS!

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13485,"Date: 2016-02
Topic: How can i create my own pool?
### Original post:
HiI have about 150 TH and i am looking to try to setup a (Linux maybe) solution to create my own pool and then try to have some stats for the miners and set payments per btc address and the rest must have stuff....Is there any instructions on how to do it?Thank you

### Reply 1:
try to find some pools source codes, they can be opensource like suprnova.cc suprnova.cc is using mpos opensource Mining Portalsource codes are based on github.<link>

### Reply 2:
Is this the best software option for Linux?

### Reply 3:
ckpool<link> if you think setting up a mining pool is a point-and-click set up process for someone who doesn't know what they're doing and you'll suddenly find thousands of miners willing to point millions of dollars worth of hardware at your mining pool and you'll instantly start making profit, then you're sorely mistaken. But if you just want to play around for a bit to learn then by all means go right ahead.

### Reply 4:
<link> like CK said be very care it can become a real pain you don't want .!!!! if you plan to mine and make cash doing it, if you have 150 th to throw at it, why not solo mine on it ? .

### Reply 5:
I also would like to create my own pool. is it profitable?

### Reply 6:
Yes, it is profitable. But for solomining you have to much more power than the 100Th. More than 3Ph can mine bitcoin more than 1 block in a week. You have one way to have profit: you own pool have to mining whith kano.is or other p2p pool. For example p2pool have no enought power now but kano.is have more than 9Ph and 2-3 block in every day. You have to think about it.Good luck.

### Reply 7:
thanks for the link (<link> learned a lot.

### Reply 8:
tip: if you don't solo mine and pick the right pool if the Bitcoin Mining Calculator i use is right you can make with no fees or anything off the top 4 btc @ 150 th a week pool mining . not solo thu . but that doesn't take in to a count , fees Electricity etc . i don't worry much about RoI so I pay the Electric bill as i get it and the pools i use charge all most no fees at all. . but if you do solo mine any blocks are yours etc . and you only pay the net work fees that everyone pays to keep bitcoins going when you sell or use those bitcoins..Just a thought !!! .

### Reply 9:
i suggest joining in a pool creating your own pool wont help you get more bitcoins .

### Reply 10:
I made a pool on my rpi with MPOS, b.c one day my 50th/s will (hopefully) mine a block,but imo MPOS is the easiest way to make a pool

### Reply 11:
please explain more about that!

### Reply 12:
no bodies answer me???

### Reply 13:
He stated he setup the pool on his raspberry pi and used MPOS.I will tell you that MPOS is not the easiest to setup, uNOMP is the easiest.

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22168,"Date: 2018-01
Topic: Switch type for mining farm help (3750?)
### Original post:
Will have about 80 miners to start eventually going to 500. Was thinking of getting used 3750s. trying to determine which one to get.. there are so many different model types and software. Anyone gone this route? I am thinking the 3750-48PS-S like below with a couple of stackwise cables. Pretty sure i have no reason to have POE but they seem to be cheapest model, shouldn't need the G version 10/100 should be fine, only need layer 2. Anything I am overlooking? <link>

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    ""hardware_name"": ""3750"",
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    ""hardware_name"": ""3750-48PS-S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""stackwise cables"",
    ""hardware_is_owned"": false
  }
]"
9059,"Date: 2015-04
Topic: AntMiner not recognized on network after power failure; only after soft reset
### Original post:
Whenever my S5 powers down and is re-powered up, I cannot connect via its IP address. However, when I reset it (with a paperclip), my router finds it. Why is this?

### Reply 1:
are you using DHCP or is it disabled? go to your settings undernetwork lan check the DHCP SETTING

### Reply 2:
I'm guessing so. When it powers down I would say it's grabbing a new IP when it comes back. And when a soft reset its keeping IP.I could be wrong as I always use static IP's.

### Reply 3:
ALSO ARE you using wifi in any spot along the network? Spring means more wifi drop outs. Thunder storms drop out wifi and you could have trouble until you fully reset it.

### Reply 4:
You can use dhcp binding feature on router to lock your ip address if using dynamic address.

### Reply 5:
I'm using static IP on the miners, with everything (subnet, gateway, etc. addresses) set correctly.

### Reply 6:
I see, probably problem on your router. You can try using openwrt for your router. What is your router brand & type?

### Reply 7:
Yes, I'm thinking it is a router issue; I am using OpenWrt. Rebooting the router didn't help, either.

### Reply 8:
Ahh, hardware problem. Try to change the power supply if you had similar one.

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15766,"Date: 2016-06
Topic: Miners running on proxy {minergate}
### Original post:
Good morningI cant find any proxy servers that work on port 80 that will work with miner programs like minergate.any help ?

",[]
22457,"Date: 2018-03
Topic: JUST RECIEVED S9, NEED HELP! APPRECIATE ANYONE THAT HELP ME OUT.
### Original post:
First things first you need to put that huge wall of text into a code tag.Second, The s9 does not shut off at 80c. Its thermal cutoff is over 100c so if it is restarting at 80 thats not heat, its most likely a power supply. Are you running the bitmain APW3++ PSU?If so, are you running it on 110v?

### Reply 1:
Which version of firmware does your s9 have? I have seen the bmminer not found error on the november firmware. I roll my mahcines back to the 0427 firmware available on the bitmain site and it fixes most connectivity issues.

### Reply 2:
It just seems that overtime it hits 80 the miner lowers the fan speed(it doesn't completely turn off) then after a minute or so it increases the fan speed again.Regarding the power supply, yes they are the vitamin apw3++ and i am mining in the uk, our mains give a 230v output.I have no idea about coding but i thought these are interesting and could help you outCode:Below ASIC's core didn't receive all the nonce, they should receive 8 nonce each!do not have any idea what that means.andCode:Dump stacks of tasks blocking RCU-preempt GP.[ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, <truncated> Miner chance num=2waiting for receive_func to exit!waiting for pic heart to exit!bmminer not found= 1377 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1613 root 0:00 grep bmminerandCode:read failed on Chain[7] Chip[62] middle Temp old value:75Special fix Chain[7] Chip[62] middle Temp = 76Done read temp on Chain[7]set FAN speed according to: temp_highest=64 temp_top1[PWM_T]=64 <truncated> temp_change=0 fix_fan_steps=0FAN PWM: 78If you can also read through the code it would be really help<rest of post truncated>

### Reply 3:
it is the Fri Nov 17 17:37:49 CST 2017, can you screenshot me which one on the website because they have many?alsoCode:some chip cores are not opened FAILED!Test Patten on chain[7]: FAILED!do heat board 8xPatten for 2 timesdo open core on Chain[7]found this error which doesn't seem right.(Moderator's note: This post was edited by frodocooper to add code tags.)

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20868,"Date: 2016-01
Topic: nanofury nf2 driver
### Original post:
hi their just bought a nanofury nf2 to get me started into bitmining but i cant find a driver for it. Could someone point me in the right direction please. thanks

### Reply 1:
The good news is the nanofury 2's don't require any special driver's to be installed. What you need is the appropriate version of bfgminer and a link to the thread that will help you get it setup bfgminer link: <link> download the version appropriate for your operating system, click on the setup guide link below and have at it mister! Your wasting hash!! :p<link> this helps. Feel free to hit me up if you have any further questions.

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21508,"Date: 2017-08
Topic: Creating My Own Mining Pool
### Original post:
I need some tips about some stuff. If anyone could answer these questions I'd really appreciate it.1) How many computers would I need to successfully start a mining pool (like the minimal amount to still get good profits)2) A decent rig to start mining with (Brand of CP, graphics cards, etc)I'll soon have enough money to get this started and I'm looking to see if I can start my own pool instead of joining a pool.

### Reply 1:
The general rule of thumb when it comes to starting your own pool: If you have to ask the question, you shouldn't do it.

### Reply 2:
Yeah but everyone needs to start somewhere. I'm just looking to mine with multiple computers instead of one.

### Reply 3:
And unless you are meaning 1000's when you say multiple you are best off joining a pool. And even then you probably need to hurry. Not that it can't be done or that you can't find a block yourself, but it's very unlikely.

### Reply 4:
Most pools will allow you to create multiple workers, so you can connect many computers to your account, and they all earn you BTC.

### Reply 5:
Here is a short Q&A for creating your own pool. Bandwidth will be a concern as well as security. <link>

### Reply 6:
This is what it sounds like to me. I know many people that already unplugged from gpu. If you are coming into a large sum of money then ASIC is the way to go unless this is just a hobby then you have nothing to worry about.

### Reply 7:
Try to manage and to plan it as much as possible.

### Reply 8:
That's said correctly.OP, if you're really not sure about this, then don't start it. I assure you'll end up loosing a significant amount with it.However, if you really want to start with this, I'd suggest you to first start finding a ""good"" server or multiple servers with high bandwidth near your area.

### Reply 9:
Fairly certain that 3 years later, he's sure about what he did.

### Reply 10:
damn this thread so clasic,im searching on google and come to here.. today im strat learning to build mining pool hope i become mastery in next year

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22530,"Date: 2018-04
Topic: Sorcerer PSU Airflow
### Original post:
Hello,I have the Sorcerer PSUs positioned where the fans are facing rear as I assumed with the connectors needing to be up front to connect to the front of the Avalons that hot air would exhaust in that direction. However I have noticed that hot air is being exhausted from the connector side. So basically it is sucking some warm exhaust air from the miners and spitting it out in front of the miners to suck back in. Has anyone else noticed this behavior and did you find a way to get around this besides using different PSUs?Thanks

### Reply 1:
Ja that is a bit of a design brain-fart however even with my miners/PSU's in a 90F ambient all is happy with zero problems to-date. The miners could care less about that very small additional heat input and the PSU's are only slightly warmer than ambient.

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9551,"Date: 2015-12
Topic: [Guide] Dogie's Comprehensive Rockminer T1 Setup [HD]
### Original post:
Excellent Guide as always Dogie!!The pics are out of the world.

### Reply 1:
Hey Dogie, are you sure the 12V is correct? I also got a 12V adapter with my sample, but the controller itself says 5V so I was concerned it would fry it... :/

### Reply 2:
I have a 12v on the T1 and then the Tube had a 5v so they both seem to work with nothing fried.I hope that helps.

### Reply 3:
The vreg accepts anything as low as 5V but prefers ~12V. Most people will be running 12V.

### Reply 4:
hi. is there any alternative controller aside form "" stock be controller "" can i use A10 or any other aside from be controller?? thank you

### Reply 5:
What do you mean by the A10?

### Reply 6:
[I don't think you're quote worked]

### Reply 7:
Hi ron noob here to the rockminer..i have setup several antminers the same way, but the BE fails to give me screen or come up.i followed your altconfig [IP Address: 192.168.0.1, Subnet Mask: 255.255.255.0, Default Gateway: 192.168.0.254]but nothing comes up on <link> on a linux box connected straight from computer to BEand i used the manual settingi did not put the <link> in front of the iP, if thats my problem?any help would be awesome thank you very much in advance.eth0 Link encap:Ethernet <truncated> inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: <truncated> Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:34178 errors:0 dropped:0 overruns:0 frame:0 TX packets:26125 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:29448470 (29.4 MB) TX bytes:6154829 (6.1 MB)lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:13604 errors:0 dropped:0 overruns:0 frame:0 TX packets:13604 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1078458 (1.0 MB) TX bytes:1078458 (1.0 MB):~$ ping 192.168.0.254PING 19<rest of post truncated>

### Reply 8:
Hello Dogie,Have you completed the section about connecting to other pools that require a proxy?

### Reply 9:
I'll put it on my to do list to revise this section.

### Reply 10:
I would be really interested in knowing if there are work arounds for this jet stratum. It is very picky on which pools you can hook it to. I have hooked it to several pool and it will show my share rate and yet fails to net any hashing power. Right now I have one and several more on the way. I am heating my office with this unit and I am happy with the tweaking but sad about the limited pools. Maybe people will sell theirs because of it and maybe I can buy them up. If there is any way I can help with this let me know. I can be a willing participant if we promise not to brick my unit. I am curious though is it the block controller that is limiting it or the miner itself. I imagine it is. I thought maybe a mining proxy or maybe another software. I saw on rockminer forum something about a work around but have failed to get any further then a mining proxy or bfgminer. Really hope that I can help with this. I love mining Bitcoin at ghash but sometimes difficulty drops on other alt coins Acoin and etc making it more profitable then Bitcoin.

### Reply 11:
See <link> for now

### Reply 12:
Gonna have to give you a plus one for pointing me in the right direction. I am trying to use this work around but don't think it is fully functional. At time I get some weird readings or just nothing accepted at all. Or constantly having to restart bfgminer. Here is my code. I would like to be able to figure this <truncated> --stratum-port 3333 -o <truncated> -u knowndragon.1 -p x --set-device PXY:diff=1024At times it seems has if it just stops working in total. Is there some sort of scan times or other options to get this thing running solid? Any help would be ablidged. The diff=512 didn't seem to work so well for the rockminer t1.

### Reply 13:
Dogie's Miner Setup Guides: ASICMiner Blade ASICMiner Cube ASICMiner Tube ASICMiner Prisma Avalon Avalon2 Avalon Avalon3 Avalon Avalon4 Avalon Avalon6 SpondooliesTech SP10 SpondooliesTech SP20 SpondooliesTech SP30 SpondooliesTech SP35 Technobit HEX16B Technobit HEX8A1 Technobit HEX4M Technobit 2HEX4M KNCMiner Saturn/Jupiter Bitmain AntMiner S1 Bitmain AntMiner S2 Bitmain AntMiner S3 Bitmain AntMiner S4 Bitmain AntMiner S4+ Bitmain AntMiner S5 Bitmain AntMiner S7 Bitmain AntMiner C1 Bitmain AntMiner U3 RockMiner R-Box RockMiner New R-Box RockMiner R3-Box RockMiner T1 HashCoins Apollo HashCoins Ares NonceTech Sampo Yiazo YBF BTCGarden AMV1 Bitmine Coincraft Desk V2 HashRatio Tsunami XBTech Pacific 1250 BitCrane T-110 Black Arrow Prospero X1 AMT 1.25TH C-Scape HexFury USB C-Scape BiFury USB MoonlightMiner NanoFury II USB Gigampz PSU breakout board Guide meta thread DefaultTrust Visualisation Power Supply analysis guide Manufacturer trustworthiness <truncated> formatted version available at<rest of thread truncated>
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10255,"Date: 2017-04
Topic: Bitmain S9 inventory
### Original post:
This is the longest I've seen the S9 posted for sale without selling out on Bitmain.With shipping a week away and relatively good prices, makes me wonder whats up?Are people avoiding because they think the miners are going to be bricked by segwit?Protesting Bitmain because of the centralization in mining power or ASICBOOSTGATE?Do they just have a shit ton of S9s available?Or is S9+/S10/S11 right around the corner?

### Reply 1:
I really do hope people just boycot Jihan as much as they can. This muppet done to much bad things to bitcoin and should suffer.

### Reply 2:
Personally, I'm at my max power budget and only have 4 s7's left to upgrade, those will most likely either be T9's again or more Avalons. I've had excellent luck with the 14 s9's I have ranging from the batch-1 up to ones that shipped last month but -- ya can only roll the dice sooo many times on the s9 before ya crap out

### Reply 3:
I did have a S9 crap out on me. Over 2 weeks round turn missed mining and exorbitant international shipping of the entire unit.

### Reply 4:
His latest schitck was to collect money for Litecoin miners and now REFUSING to send them out using some pretense.So, basically, people paid him to mess up litecoin.How nice.

### Reply 5:
Hopefully Bitmain does the right thing and offers a partial refund on the April premium.

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22979,"Date: 2019-06
Topic: Help Setup newpak for computer illiterate guy...
### Original post:
I bought two newpak gekko science asic sticks and want to get into mining. I plan on buying a lot more! Electricity is free for me but i chose the sticks becouse they dont make as much noise. Im using an old toshiba laptop but Im having trouble getting cgminer to work. It says I need to install opencl when i click run on cgminer.exe. A quick google search and I found openlc.dll but when I down load it it goes into a folder with an Z above it. Cgminer also has a Z above it? Not sure what this means. Anyways, cgminer is still saying I need opencl. Ive put open cl entire folder into the c <truncated> Not sure what Im doing wrong.please help

### Reply 1:
I don't have much knowledge about this GekkoScience USB stick miner but there is official thread of this with complete guide you can check it from here GekkoScience NewPac / Terminus R606 (BM1387) Official Support Thread

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14014,"Date: 2011-05
Topic: Stop mining on deepbit
### Original post:
I think we need Tycho to voluntarily block new people until he is below 33% (and that is a high amount already) of the hash rate. And convince the slush guy to do the same too.

### Reply 1:
And convince Tycho and Slush not to conspire with each other

",[]
10708,"Date: 2018-02
Topic: [Setup & Troubleshoot] Bitmain AntMiner S1 180GH/S miner
### Original post:
i got mine from GB , hashing now thanks for Bitmain and especially for Sushi

### Reply 1:
I have been trying to SSH via WiFi on my local network, but I can't seem to connect. I reassigned my two miners to the same subnet as my router with end IPs being 253 and 254, but it never seems to connect. They are connected fine to my router and hashing on a pool, but I cannot SSH, or access the web interface wirelessly. Is there something I'm missing here?

### Reply 2:
@dropt Thanks for the info. I don't see any discoloration on my chips, but my inductors where really hot when i touched them.(not really scientific but i don't have the right equipment) So i placed some heatsinks on the inductors since that piece of the board doesn't seem to directly benefit from the stock lower heatsink, hopefully lowering the inductor heat will also benefit the voltage regulator since their close to each other. I also noticed temp difference(~4C) between the boards so i've aimed an extra fan to board 1 witch caused the stock fan to drop in speed and neutralized the temp difference between the boards. atm i'm getting about ~2% HW errors, is that <truncated> i've run into sort of the same problem When the miner is hooked up to the ethernet cable i can connect via the wifi <truncated> to my miner, that works perfectly.As soon as i remove the lan cable i can't connect anymore but the miner will keep mining, so it looks like some sort of firewall issue?

### Reply 3:
What is the safe range of temperature for antminer ?What is the maximum speed of antminer fan ??kind regards

### Reply 4:
Wow.. fast shipping.. my ordered extenders aren't here yet... I seem to have quite a few of these.. think they came in the sapphire 7950 boxes I have...Any issues using two of these per blade? Thanks

### Reply 5:
May be 2 but 3 recommended!!!

### Reply 6:
Can someone please explain how to configure the miner in Wi-Fi mode? It's poorly documented.I can't get to do so. It won't even find my wifi router. :-(Thanks,arorts

### Reply 7:
Short the pins

### Reply 8:
Alright - up and running - however I am getting that ""hang"" on saving cgminer settings..How the hell do I modify what the PDF states? Pretty much zero Linux know-how here

### Reply 9:
ssh into the miner and use vi (a linux text editor) to modify the file. Instructions are in the guide here by user goxed:<link>

### Reply 10:
Would it be a firewall issue on the Miners side? I tried to look for a setting in my router for AP Isolation, but found nothing.

### Reply 11:
That helped! thanks!Now - I can save my pool info successfully... reboot, nothing going on... le sigh... killawatt says 100-110 watts of something is goin on.. nothing populated under the miner status page.. thoughts?NM - good to go..

### Reply 12:
I can no longer access the WAN interface after I mistakenly set it as DHCP. I hadn't enabled WiFi so it's not getting any address from my Wifi either. Any way to access it? reset it?Thanks,

### Reply 13:
Well I did that today. I shut it down. Turned it on after a few minutes. Checked my router for the ip address and logged in.

### Reply 14:
i have been having trouble with configuration, i just can;t get the interface to mine, i am sure its a configruation problem, just to clarify i have an ethernet cable which goes into a powerline adapter from the miner, where the connection is transmitted wirelessly into the wireless adapter downstairs, this then goes into my router, and then my router is plugged into my modem.This is the second day i could;t get my miner to mine, and i don't know if its becouse i am using the wrong ip adresses in configuration, could anyone please help me out Thanks!

### Reply 15:
more info?did you directly connect the miner to a computer to configure it's IP? what IP did you set?

### Reply 16:
<link>

### Reply 17:
Yes i directly connected the miner to a laptop,i set the IP of the internet dowstairs, that didn't quite work, os i then changed the IP to the wireless router and the maskway,I am now accessing the miner without having to use the laptop connected to it, as its connected with the ethernet. However it won;t mine but does pick up signal,

### Reply 18:
anyone could tell me how to reset these please, im locked out of 1 thanks

### Reply 19:
if its connected but not mining, you probably need to check your miner config and ensure the pool info is right

### Reply 20:
I received my AntMiner yesterday and got it going pretty easily. It's a nice unit. My wife commented, looking at it from above, ""It looks like a toaster.""Is anyone offering an enclosure for them yet?The ""LAN"" interface confused me a bit at first. I assume it's completely inaccessible and not used for anything, correct?I see ppl sticking a heatsink on the inductor. Don't those things operate based on a surrounding magnetic field, and wouldn't sticking a hunk of metal on top of one possibly affect tha<rest of thread truncated>
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16879,"Date: 2011-08
Topic: Have 4+ cards running on one of my rigs...took me months
### Original post:
First of all, here's my hardware setup for this machine:MSI 890FXA GD70, 6core, 1000w OCZ 3x XFX 68701x MSI 6870I finally got this running in windows 7 with 4 cards. Before you linux guys jump on me, I tried linuxcoin out, and I had 2 problems. I couldn't underclock 6870 memory, and when I went from 3 to 4 cards, linuxcoin wouldn't start Xwindows.Windows wouldn't work for a while either. First, with 11.6 drivers, guiminer wouldn't start, Afterburner wouldn't start. I went to 11.7, which was nice, because it allowed remote booting, restarting the miners without monitors (dummy plugs have never worked for me), and the CPU bug was ""fixed"" - 1% CPU usage on 3 cards. But I could only start 3 at a time. GPUz wouldn't start if 3 cards were mining. 4th card also wouldn't start, no matter which 3 I started first.I finally fixed this by uninstalling the drivers, deleting the contents of this reg key: <truncated> and reinstalling 11.6. CPU back to 100%, back to monitor cable swapping, but it runs 4 cards. I noticed overclocking is tricky. You have to switch between Trixx and Phoenix Rising to get the memory down, and use GPUz to check for success. Afterburner still wouldn't run. But GUIminer <rest of post truncated>

### Reply 1:
i'm running the same board w/ a dual core and quad reference 6950s . i had to delete that reg key as well to jump from 3-4, though i can run mine in quadfire without the need to use dummy plugs and my cpu load is only 50%. pulling 1.5 gh/s @ 800watts from the wall

### Reply 2:
So the drivers are you using are 11.7? Do you mean 50% of one CPU or 50% over all? On a 6 core machine, my usage is at 16%, because I have them set to use a single CPU @100%. But with 11.7 preview my overall usage was about 2%.

### Reply 3:
im using 11.6, and 50% total cpu usage.

### Reply 4:
something must be wrong with catalyst 11.7... now I have 16% - 17% cpu usuage on my 6 core amd phenom II. With catalyst 11.6 I had about 0% cpu usuage.Now I have <truncated> (the video converter) installed aswell, I don't remember if I did have it with catalyst 11.6.

### Reply 5:
Is it something with the GD70 motherboard, or the 6900 series cards??? I'm in the same situation. Been trying for weeks to get 4+ cards running under linux with no luck, just get X running 100% CPU. Maybe I'll give Windows a try.

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22558,"Date: 2018-05
Topic: Bitmain Antminer S9 Troubleshooting Hardware Ver. and Kernel
### Original post:
I Recently purchased 2 miners. One I got working just fine the other I am having a hard time getting it setup and running. I am not able to see the version name, I attached a picture showing the System/Overview tab depicting this error. Also my miner does not seem to fully boot I have attached the Kernal Script below up to where it stops - I have left the machine on for 30min and it still doesn't get past......retry check chain[6]: asicNum = 0The AsicNum=0 on chain[6]Any help would be much appreciated!<link> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] No<rest of post truncated>

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11419,"Date: 2011-06
Topic: Mining programming-related questions
### Original post:
(I hope this is the right forum, if not sorry and please move it to the correct one )First of all: Regarding my programming ""skills"", I guess I can be called a novice with a little bit of advanced knowledge in writing programs. I am/have been working with Java, ANSI C and C++ for several years, and though I'm still far away from being a really good programmer I think I can say I learn very quickly once I've set myself a target on what I want to achieve. With that being said...I'm trying to get a basic understanding on how the miners (especially the GPU miners) are working, how they're structured and what you need to build one. I've heard the term kernel a few times, so I guess there are a few trusty kernels that are specially built for the hash-calculating operations on GPUs (using OpenCL if I'm not mistaken) and if I've understood the principle correctly one just builds a miner on top of these kernels (please correct me if I got this wrong, as said before, I'm not very well-read on that topic).To come to the point, I have a little project in mind which involves maybe building a mining-program and I was hoping you guys can maybe point me to some tutorials/examples or give me a few <rest of post truncated>

### Reply 1:
I've actually been looking for the same thing; unfortunately I didn't find any useful ""Anatomy of a Miner"" document (I might write one myself once I get my head around it fully), but taking a look at the code for pyminer is probably a good bet - it seems to be the simplest and most readable one out there. Satoshi's original paper is also definitely worth the time, if you haven't taken a look at it already, to get the broad picture of what all this hashing actually achieves.

### Reply 2:
Thanks, I guess that's a start. I'd appreciate it if you'd share what you can find if you have the time for it

",[]
9292,"Date: 2015-08
Topic: ANTMINER S5+ [ SOLD OUT ]
### Original post:
i already bought just one S5+ Miner and was looking forward to buy another 5 miners within a few weeks.but i see that it's SOLD OUT already in just 4 days !!any idea how many miners was it and how much is't to buy from other BTC shopping sites ?Thanks.

### Reply 1:
well itop has it for 3299 plus shipping.<link> really big markup.

### Reply 2:
it's really high when the device was 2307$ and shipping cost to my country almost 200$.

### Reply 3:
We don't need a new thread for this, use one of the other two.

### Reply 4:
indeed.. id just like to add for OP that Scott from HolyBitcoin (holyscott) is getting some in, will be selling them at 2999 i believe? you may want to PM him

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22795,"Date: 2018-11
Topic: Bulk update hundreds of S9’s
### Original post:
I have a lot of S9s that supposedly support asicboost and I dont want manually update them. Is there a way I can do this via SSH? If so I can write a shell script. Any advice would be welcomed.

### Reply 1:
You can use the Bitmain Tools program, it has the ability to upload / update firmware.<link>

### Reply 2:
I'm not sure how you would do it with a shell script but autohotkey makes it really easy, just pass it a text file with IPs of miners that you want to upgrade.

","[
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15459,"Date: 2015-01
Topic: Mining Union
### Original post:
Any interest in forming a Miner's Union? I'm not volunteering to help, but I am curious if any of you think it's a good idea. Like OPEC.

### Reply 1:
There is already one => hashersunited.com

### Reply 2:
but what purpose would it serve? its not like we could band together and get cheaper power or hardware, or drive the price of BTC up by going on strike... the concept seems pointless to me. can you elaborate?

### Reply 3:
It sounds good! Maybe a union for latinamericans miners? Who join me

### Reply 4:
Bitcoin is too decentralize for things like OPEC to work. Unless you are talking about few big companies control price and difficulty.

### Reply 5:
Tell me, what do you want to achieve?

### Reply 6:
Anyone selling your ASICs?

","[
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16937,"Date: 2011-09
Topic: Headless Windows Mining?
### Original post:
I would like to turn my Windows 7 box on and have it automatically tune my cards and start mining. Anyone doing this already and have a good list of tools to get started with or some ideas? I would need a command line windows application for clocking my 2 6970s at 960/330 and setting fans to 100%. I would also need a method for automatically starting phoenix miner with access to the desktop.

### Reply 1:
Trixx can auto set clocks and if you drop a guiminer shortcut into the startup folder it can be set to auto mine as soon add it launches. I have 3 machines setup that way with dummy plugs as well as a program I found called launch later (if you change clocks while mining things can lock up) to delay guiminer 30s or so. I installed log me in free for any changes I need to make.

### Reply 2:
you can also remotely monitor your mining using ssh

### Reply 3:
You will need dummy plugs if your monitor is not connected

### Reply 4:
I'm not sure why anyone would need dummy plugs on Windows 7...You need to do 3 steps to configure headless miner on w7:1) Autlogin: <link> Add your miner to autostart. Gui-miner allows to specify what miners run on start up, so you only need to add gui-miner shortcut to windows startup. Phoenix miner can be started from .cmd file which would call it with proper args. Ofc, shortcut to .cmd file needs to be added to windows startup.3) Configure overclocking: seems like GUI-based OC software actually cares about card being plugged to something, but ClockTweak app ( <link> ) is a command line tool and works very nicely from Startup shortcut and can change core clock, memory clock, fan speed etc... for any GPU without a need for dummies - however it costs 0.2BTC - cheaper than making dummy. Note: OC will not work when Remote Desktopping, but works fine from autostart.

### Reply 5:
Maybe on age old drivers. 11.7 preview already includes support for multi-gpu setups without dummies or cables. AMD Catalyst 11.7 and 11.8 natively support headless multi-gpu rigs.

### Reply 6:
You can use Team viewer to manage from your smart phone! I run 3 machines from my phone using it!The ONLY thing it can't do, is cold boot the computer! At least I haven't figured out how, if you can!

### Reply 7:
Wake on LAN. Just need to send the magic packet. Little background here, originally, I was having some stability issues with my box and losing display/contol after about 8 to 12 hours of mining. I was going to write a script to reboot after a couple minutes of idle miners but went a different route. I did a little digging and noticed that the windows snmp service has a serious memory leaking problem when I'm mining. I wrote a script to restart snmp and my miners every 3 hours and I haven't had trouble since.I still want my machine to go straight to mining after a reboot so I'll probably use the autologin application brought up here. I was kind of hoping there was a way to provide an application access to the desktop on startup, without logging in.

### Reply 8:
Currently running a headless setup using trixx and logmein. Works great.

### Reply 9:
When I was running Windows I was using BarelyClocked to OC the cards and cgminer to do the mining, loaded these from a batch script by using a timeout and then changed clocks with barelyclocked, then finally running cgminer with arguments, Also got my self a dyndns account and installed vnc server for remote <truncated> cgminer does OC'ing for you so you only need a batch script to run cgminer with your clock values and thats all you need, no dummy plugs needed are needed as of 11.7 drivers.....I just switched over to linux the other day but too much work setting up vnc to auto start on reboot, along with all the other crap configs needed... yeah I know Windows miner has the ""N00b"" label stuck on it, but in real life its faster and easyer to setup, if that makes me a n00b for not wanting to deal with the bullshit configs you need to do with linux then so be it, I'll be back on windows by tomorrow P.sIf you need a hand with the batch scripts give me a yell and i'll show an example how to do it, you can also sett affinity using batch script

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13416,"Date: 2015-07
Topic: ftdi_sio  ttyUSB0: Unable to write latency timer: -71
### Original post:
On a fresh fedora 22 install, I compiled cgminer with -enable-icarus and plugged in two antiminer U3's. It ""appears"" to work because I can see the hashing status of the two devices, but it also dumps lots of errors like this:ftdi_sio ttyUSB0: Unable to write latency timer: -71ftdi_sio ttyUSB0: Unable to read latency timer: -71ftdi_sio ttyUSB0: Unable to write latency timer: -71and it keeps repeating..What can I do to fix this?Thanks, -t

### Reply 1:
See the first post for where you get the current master cgminer.I've no idea what you are running or who you got it from.

","[
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4203,"Date: 2012-10
Topic: ASIC bandwidth
### Original post:
What do you guys think these new ASIC devices will use in downloads and uploads?

### Reply 1:
I've seen this kind of question before With the type of getwork that just gets one blockheader the asic has to search 2^32 nonces and finds on average 1 nonce worth a share.The getwork uses about 1kB data. Sending the nonce back to the pool uses less iirc, about 1/4kB.For 1500 GHash/s this gives 1500G / 2^32 is about 350kB/s pool->client and 90kB/s client->pool.For getwork there is already rollntime that tells the client it can change the time part in the blockheader.So with a rollntime with value 10 the clients has 10 times more work so the 350kB/s pool-client is reduced to 35kB/s.If the client->pool data gets to much, it is possible to change the difficulty 1 for a valid share to something bigger.That way the client finds less shares, but the shares are worth more so on average it is still the same.There are at least 2 new protocol proposals, but I can't remember their names so I can't find them right now.One of them lets the client calculate the header itself iirc and has some higher difficulty for shares and something better than the current longpoll the prevent stales.The other I haven't read the text but I think it has something just like that.

### Reply 2:
With the new stratum mining protocol and variable difficulty targets, the network bandwidth will be about 1K/minute regardless of your hashrate.

### Reply 3:
I've been using Stratum on BTCGuild and can back that up. It's pretty sweet.It actually loads my GPU's more heavily because it's taking a much shorter break between shares and blocks, and it's more bandwidth efficient too.One thing to point out though, is that the Total is 1Kb/s per session.So if you are using 10 instances of cgminer (or whatever) with built-in Stratum support it will consume 10Kb/s as each miner has it's difficulty adjusted individually to match the submission rate goal.There is a Stratum Proxy available that you can put multiple miners behind, collectively adjust difficulty for the miners using the proxy, and constrain the entire pool of miners to 1Kb/s. You just have to be ready to see low share submission rates on a per-miner basis if you use the proxy because it limits the whole population. The good news is that you still get the same income rate in the long run, even if each miner is doing 1 share per minute (at a massive difficulty multiple so you still make the same amount.)

### Reply 4:
Yeah, you can mine with Stratum over your mobile connection without any significant loss of BTC due to network lag. You also won't run up an overage with your wireless carrier because the bandwidth is so small.

### Reply 5:
This is amazing, so 50MB per month is the most you would need.

### Reply 6:
Just wait until you can fit the entire blockchain on a 4 dollar flash drive (after pruning, hashing, whatever is being proposed these days).You can imagine the conversations we're going to be having 10 years from now with newcomers.""So what's this bitcoin deal...?""""Here, I'll show you. It is a digital commodity, very valuable these days. Let me see your phone.... There... I just downloaded every Bitcoin transaction that has ever taken place to your phone. Took up less room than your Facebook app. You can use it to securely send these digital commodities, in any amount, to anyone on Earth (or in orbit, or on Mars) for a fee of a United States nickel. You have more security and financial freedom in your phone right now than even the richest man or bank 20 years ago. If I were to send you $20 in BTC, .003 BTC, it could never be seized, frozen, taxed, lost, stolen from you, or linked to you. Want some?""Fun to dream right?

### Reply 7:
1K/s sounds pretty good. I'm using about 1.5GB a month with 8 GH/s. That sound about right?Would that mean a BFL SC at 60GH/s would use about 11GB a month?I wonder if some of the purchasers with small download limits would be affected by this...

### Reply 8:
Or 1K/s with Stratum.

### Reply 9:
I hope there's at least a few people out there with dialup modems mining on BFL's.

### Reply 10:
I'm seriously considering hauling mine along on my next trip hooked up to a 3g modem.I will for sure with my Jally.

### Reply 11:
Is this accurate? If so, WOW!

### Reply 12:
Well, they would be for 4 hours until they have to redial

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16178,"Date: 2021-12
Topic: Yet Another Bitcoin Mining Calculator
### Original post:
Hey folks, I have created a bitcoin mining calculator that is an improvement over all the ""hopium"" type calculators that ignore difficulty and many expenses. My calculator is focussed on whether or not it creates more bitcoin than it costs to buy and run.It focuses only on the profitability aspects of mining, ignoring other positive aspects such as keeping the network secure and non-KYC.The About section goes into detail about how the variables affect the ROI of a miner.Any feedback is <truncated>

### Reply 1:
I think if you'd used a more generic name you would be more likely to get people to click on your link.As it stands it just looks like the sort of link that would give windows users a coronary just thinking about.Site looks ok though. Might want to add a free letsencrypt cert to allay some web browsers paranoia about non ssl sites.

### Reply 2:
I wanted to give it an interesting name to get people to click, you may be right though.I'll look into letsencrypt or maybe my provider has an SSL option I can turn on.Thanks for checking it out!

### Reply 3:
So according to this, the compass mining 6x s19xp bundle deal they have right now will have a 13 month turn off time

### Reply 4:
I'm not sure what values you used, but a 13 month shutoff time seems unlikely unless you entered electricity at .65 rather than .065To make things easy, I used the value of one miner at $13,250, coming online in December 2022, which is about the mid-point of the 6 miners.Done that way, it never shuts off, but it never breaks even in BTC terms. After 42 months it is at -45% ROI.

### Reply 5:
Indeed an interesting name, as far as SSL is concerned, you may simply use Cloudflare free account to get a free SSL and basic DDOS attack prevention.

### Reply 6:
related thread <link>

### Reply 7:
Hey! If you're still reading this thread I found a name you might like, ""bitcalc.net"" is not taken if you desired it, it gets the point across, and its short, and easy to remember.

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20416,"Date: 2015-05
Topic: Setting up Drillbit Fury Thumb- SOLVED- Now need OC
### Original post:
Averaging 2.082Gh/s with a usb fan... and its not even warm.How do I OC this bitch puppy?

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11007,"Date: 2021-09
Topic: Innosilicon T2Ts reliable miners ?
### Original post:
Hi guys,I know it's an old (and cheap) gear but what are your feedback regarding Innosilicon T2Ts ?Are they reliable gears or did you guys experienced troubles with them ?Thanks for your feedbacks,Larson311

### Reply 1:
Are you buying used or new? Innosilicon has new T2T series miners available on their website. Those are nice rigs. I have a buddy running a few and he likes them.I like buying new due to the efficiency, no cleaning, warranty and did buy a group of T2T 26Th about 3 months ago. I am thinking of selling them off, but not sure yet.

### Reply 2:
Thanks for your feedback, as far as I know the ones actually on sale on Innosilicon official website are refurbished by them with a 6 months garanty, curious to know if they are reliable after a refurb from the OEM.

### Reply 3:
There are 2 models for sale. 1 of them is new, 1 looks to be refurbished. When I bought mine, they were only new. I think it changes based on the manufacturing line.

### Reply 4:
There was this report recently about the 'refurbished' ones. They seem to be more in the condition of 'heavily used, packed and sent off' instead of 'refurbished'.

### Reply 5:
From my experience the T2Ts are good reliable miners even when used and slightly abused. They only have a couple of problems in my opinion. They're loud AF and not very efficient. They're just barely more efficient than an Antminer S9.

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15774,"Date: 2016-06
Topic: Can i mine cryptocurrencies with a low internet connection?
### Original post:
I am from Egypt and the internet is really bad here...I have 2 mb/s internet connection and i am willing to start mining soon with ASIC Will the 2 mb/s be enough?do i even need high speed internet for mining?

### Reply 1:
I think it uses aliitle bit based on the info I read over here<link> here <link> luck

### Reply 2:
Yes you can mine bitcoin or altcoins with a low internet connection.You need only a stable connection not a high speed connection.

### Reply 3:
You can mine but you need the internet to be stable so that you can mineIt is depends on the stability of connection not the speed of the internet.

### Reply 4:
2 megabytes/second? Here in Cavemanstralia, we talk in kilobytes/second. (And it's mineable here, just very expensive.) 2mb/s should be enough to mine crypto, as long as the connection is stable.

### Reply 5:
I think the guy means megabits/sec, which would total to 250 kilobytes a second. Here in Australia using ADSL 2+ I get about 3 megabytes per second ^_^ I'm getting Fibre Optic late next year

### Reply 6:
Even with a connection as low as you have i think you should be able to mine no bother, others have said the most important thing is stability, you don't want your connection dropping all the time or else when you hit a block it might not confirm because someone else might hit it when you lose connection.

### Reply 7:
This problem of low internet connection is a problem found in many countries, but fortunately it does not bother you mine. Of course, your connection should be stable. To mine you do not need speed. Be aware of the cost of energy.

### Reply 8:
connection stability is the most important; currently i'm using a 512 kbps wimax for my GPU rigs. as long as the connection doesn't drop, the ping time is stable & is relatively ok it should be fine.

### Reply 9:
You can have the internet speed 20mbps but unless you have a stability internet connection then it is useless. I think that you can mine with your actual internet speed, but just be sure that you do not have lag when connecting to websites or while mining because once the connection is lost then you will lose what you mine for a small period of time.

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14566,"Date: 2012-06
Topic: Show off your rig on rugatu - 1.50Btc Prize, get 10mBtc for participating!
### Original post:
BUt then I have to create and account and everything

### Reply 1:
You can use your existent google, twitter or facebook accounts to login

### Reply 2:
Show us what you got, we would really like to see if any of you has spent allot of time and effort building his rig.Most voted rig wins the reward, good luck <link>

### Reply 3:
Rigs contest is ending this week (closing thread)Edit: Contest ending prolonged

",[]
16458,"Date: 2023-03
Topic: Who represents BitMain on this forum?
### Original post:
I couldn't find anyone, is there any member here representing bitmain company?

### Reply 1:
They have so many profiles, but some have been in active for several years. Why don't you just contact support from the Bitmain website directly? They could probably get you the help you need rather than wait until someone representing them logs in here after a long timeHere are 2 profiles1. BITMAIN2. BITMAIN_Lunna

### Reply 2:
Yes absolutely !When I created a ticket with their online support, I was always pleasantly surprised by their responsiveness. They have a very bad reputation in terms of customer service, but I must say that they have always responded to me within 48 hours by email.However, I have to admit that some times I had to send two or three emails to get the actual answer to my question. I don't know if their support agents are overworked, but sometimes the responses consist of sending a simple FAQ link, when in the basic ticket you mention that you used the FAQ and it didn't solve the problem.I think it's like with all support, better to give all the info right from the start if you want the request to be handled correctly, and if it's not, don't hesitate to start a ticket from the beginning hoping to find another agent.

",[]
20829,"Date: 2015-12
Topic: Avalon Nano 3 not working - Windows 8.1 BFGminer
### Original post:
I am new to Bitcoin mining and got an Avalon Nano 3 to start and learn.I'm running Windows 8.1, and using the LPC USB VCom port (COM3).AvalonGUI runs about 5 minutes at 3-4 GH/s - then it hangs. No good info in the Avalon.log. But according to my pool (slush's), my worker does work (albeit for 5 min).So after reading the threads here, I stopped using AvalonGUI and have tried to get BFGminer (4.7.0) running. I'm close, but the hash rate stays at 0 even though it sees the device. The device shows up at AVA 0 (which is odd because I'm using the -S parameter with the 'Avalon://./COM3' name). Here is my BFGminer command line (USER AND PASSWORD OMITTED):""bfgminer -0 <truncated> -S avalon:\\.\COM3 -u xxxxxxx -P ppppppp""I am getting 'Avalon: Reset Failed! not an Avalon?' error.Any help would be GREATLY appreciated!Chronic

### Reply 1:
try moving it to miner software<link> mining support<link> will ask mods to move it.BTW :I gave up trying to get mine to run I gave it away

### Reply 2:
Are you using powered usb hub or not?The miner need more power, so you need to use powered usb hub.

### Reply 3:
I'm plugged directly into usb port on back of PC with a fan pointed directly at it. I don't think it is a power issue, because it does run for 5 minutes using the AvalonGUI before that stops. I believe it has to do with the device name or usb driver. Thanks for your replies! -Chronic

### Reply 4:
Some mainboard have overload protection on USB port, even though i never encounter it with nanofury & my gigabyte mainboard.So maybe you can try using powered usb hub & see the behaviour.

### Reply 5:
Thanks, my new powered hub just arrived. I plugged it into my PC (and power) and the exact same outcome; AvalonGUI runs 5 min. and BFGminer seems to see it, but never start. I think the answer is to play with BFGminer settings (going back to bfgminer readme asic again) or USB driver (which is there, but someone mentioned a different driver to try).I'm sure it's not broken, as others have had the same error and I think some of them got through this.

### Reply 6:
it is not the hub sorry you purchased the hub waste of money in this case.I have really high end hubs did not matter.No one explained it in a way I was able to understand.And I mined with lots of sticks. I GAVE UP WITH IT. Sorry some one talked you into buying a hub.Try youtube maybe someone did a decent video last I looked no one did.not English<link>

### Reply 7:
*** UPDATE *** (problem solved?)I was troubled by some of the differences I saw in the device name (avalon vs ICA) and re-installed everything on another PC (running Windows 7 instead of 8.1).Avalon Nano 3 worked fine. But I realized the GUI looked different. And I think I figured out the issue; There are multiple downloads at <truncated> one is 'Avalon 3' and another is 'Avalon Nano'. I believe that I downloaded the wrong version; Avalon 1, 2 and 3 are different systems - they are NOT the nano.So I removed all the software (USB driver and Avalon service/UI) and downloaded the 'Avalon Nano Quickstart'. Installed the USB driver from the download, modify the Avalon.ini (in the AvalonMiner.Qt4MSVC folder) - simply edited the COM port (mine is com3). Launched gui, closed gui, plugged in Nano and launched GUI again.Voila! I've been running now for 10 minutes. If anyone else is having an issue getting Avalon Nano running in windows, make sure you downloaded the 'NANO' version of the download files.Good luck and thanks all!Chronic

### Reply 8:
this sounds like you got it correct. enjoy it.

### Reply 9:
I was able to get the Avalon Nano 3 to work on my Windows 7 system with bfgminer. The driver was the key and of course getting the correct commands to configure it. It did quite well but I really wanted to do this on my Raspberry PI 2 since I did not really want to tie up my Windows box with these.I had initially purchased some ASICMiner Block Erupter USB 330MH Saphire Miners. I was able to get those running fine with bfgminer. screen S Mining ./bfgminer o <truncated> -S All u UserName -p PasswordBut when I added the Avalon Nano 3's I can't seem get a config that works with both. It runs for awhile but finally dies after a few hours. The following was the config I tried that worked for awhile. It shows the Safire Miners as BES and the Avalon Nano 3's as ICA.screeen -S Mining ./bfgminer -o <truncated> -S <truncated> -u UserName -p Password --set-device ICA:baud111520 --set-device ICA:timing=0.22 --set-device ICA:reopen=timeout --set-device ICA:work_division=1 --set-device <truncated> --set-device ICA:fpga_count=1The Raspberry PI 2 runs one or the other. I am guessing that it might be power related but I am not sure. I have a new USB hub arriving and will try that.

### Reply 10:
If anyone is having trouble this might help - <link> . It was a review a while back. I used the GUI as it looked nice in the review.But here is a place wi<rest of thread truncated>
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21361,"Date: 2017-04
Topic: Low Hash score and wu on S9
### Original post:
Hi, well as can be seen in the images linked below. <link> hash rate is at 12.57th/s but the average is almost always below 9th/s. I tried to change the difficulty to a 2048 and 10200 but the problem still persists. When i reboot the miner it hashes perfectly at the 12.5th/s but gradually goes down to the 8.5th/s avg range but the entire time the rt/s is always at 12.5th/s. I read a few threads and they say that it may be because of the HW errors but it is at only at 0.0001%. Here's me hoping there's a simple solutions to this.Thanks

### Reply 1:
Just an FYI the link below shows a different miner running along side it<link>

### Reply 2:
board a -------- has 3 pcie jacksboard b -------- has 3 pcie jacksboard c -------- has 3 pcie jackson board a pull the 3 pcie cables run for a day see if you do say 8.5-9 or 4.2 -4.5repeat the next day with board brepeat the next day with board cmy guess is one of the 3 boards is sick the 3 day test above should let you which one is sickgood luck

### Reply 3:
Ok will start that when i arrive home tonight. But i though maybe it's a firmware thing or something but will try that.Thanks

### Reply 4:
Well if you take a look at chip temps the problem looks like it is board 1 aka chain 6. You can see that on the chip 1 temperature that is only at 28c so obviously there is something funky with that board.

### Reply 5:
Wow i never noticed the 28c Well now i know which board to start with.Thanks

### Reply 6:
So i found the defective board and unplugged it. so i save 400watts <link> not sure if i should get it repaired or not. Should i just keep it mining or sent it to be repaired?Thanks

### Reply 7:
Bump for advise?

### Reply 8:
Its a pretty simple thing to figure out on your own.1. Are you under warranty?2. If not, are you willing to pay like $300+ to fix the board?

### Reply 9:
Yes i am under warranty but it is worth it of losing 1 month of mining for 1 downed hashboard?I am more on the yes side of sending it to be repaired but still need a little push XD

### Reply 10:
well look at it this way.3 boards not hashing for a monthor1 board not hashing for 12 months+It will take 9 months to cover that month of downtime but the S9 is assuredly going to be on the market as the top dog for at least another year. There is nowhere for the tech to go right now as 10nm is 2+ years out for a boutique manufacturer to even tape out and test.Personally I would warranty it.

### Reply 11:
Pushed receive, will do. Thanks

","[
  {
    ""hardware_name"": ""S9 miner"",
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  },
  {
    ""hardware_name"": ""board c"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""pcie jacks"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chip 1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""defective board"",
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    ""hardware_name"": ""hashboard"",
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22180,"Date: 2018-01
Topic: Recommendation for *Switched* PDU's (to run Antminers)
### Original post:
Hey yall,Wondering if anyone has any recommendations and links to a PDU product that is switched (I can control it remotely) and can handle multiple S9's (the more the merrier).Cheers

### Reply 1:
I would recommend Eaton or APC PDUs for what you need. The amount of machines you can run will depend on the breaker and power setup. If you only need a couple I would try to source them on the secondary market as they are usually priced at about 10% of their original MSRP.

","[
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    ""hardware_name"": ""Switched PDU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Eaton PDU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APC PDU"",
    ""hardware_is_owned"": false
  }
]"
13915,"Date: 2011-04
Topic: Need some help please! Getting 2.6Mhash when I think I should be getting 150+
### Original post:
Hi, I'm very new to this kind of thing and am trying to get the best possible Mhash/s using my GPU.I followed the directions on this forum and got the Gui installed, made an account on bitcoin pool and got everything working, except I'm only getting 2.6MHash/s with this, which is about as much as I was getting just using my CPU with bitcoin.The hardware comparison list says I should be getting 150Mhash/s + with my GPU - ATI Radeon HD 5770.I'm probably making some basic mistake somewhere but I'm not computer smart enough to find it, any advice would be much appreciated.please see pictures for my specifications and setup. ( I tried uploading them here but it said the upload folder was full)<link>

### Reply 1:
you're currently mining on your CPU,in the miner GUI, click on Device (where it currently says ""AMD Athlon..."") and choose your GPU (device 1 instead of 0), that should do the trick.

### Reply 2:
Hi, that would make sense, but when I click the drop down menu there aren't any other options??

### Reply 3:
hmm, maybe a driver/SDK issue, try to reinstall those (i'd recommend to use SDK2.1/2.2 instead of 2.3).

### Reply 4:
Ok, thanks I will try this.

### Reply 5:
Woohoo! Problem solved, I just had to update my GPU driver.. Haha... Thanks for your help

### Reply 6:
you're very welcome,glad to hear it works.

","[
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16435,"Date: 2023-02
Topic:  what I understand about bitcoin mining as a newbie
### Original post:
To go further, you can start reading this : <link> (mastering Bitcoin - chapter 10)It is too long to be fully pasted here.

### Reply 1:
there is like thousand of topic like this but here <link> you can find a dozen of video from plain English to advanced Youtube in my opinion always the best when it comes to learn about crypto

### Reply 2:
Venturing into Bitcoin mining can be quite hectic as the process can be tedious and discouraging sometimes, but when you consider the rewards attached; like the blocks of Bitcoin one gets after completing a complex mathematical problem, is enough to get one going. This link here can give more insight on what the stuff is all about link

### Reply 3:
Bitcoin mining is not for beginners. The next halving is already close and many ASICs will become useless. It is better for a beginner to start with video cards or asics for other coins, which consume much less electricity and do not make noise. And you can use them in the apartment or on the balcony.

","[
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    ""hardware_name"": ""video cards"",
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]"
10696,"Date: 2017-12
Topic: GekkoScience 2Pac BM1384 Stickminer Mining Over 26Gh/s
### Original post:
I know this thing is supposed to peak out at about 15Gh/s but for some reason without me doing anything its over 26Gh/s. I'm please but have no idea why this is happening. any explanations?

### Reply 1:
What frequency are you running them at?

","[
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    ""hardware_name"": ""GekkoScience 2Pac BM1384 Stickminer"",
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3909,"Date: 2016-01
Topic: Group Buy! - Antminer S5+ bitcoin miner 7.7 T @3436W - 2700 - Ends January 28th
### Original post:
BEFORE READING : Contracts can be made if neededHi, Everyone!This is a simple post.Before I start I've been offered a AntminerS5 + bitcoin miner 7.7 T for just 2700 in BTC that can be found here : <link> can't afford to miss this opportunity and want to raise a group buy to get it.Electricity : before I get going on the money front I want to let you know I live in California were it is 21.3 cents per kWh or at least the average.The cost of electricity will be covered by the miner.The MinerHashrate : 7722 GH/s 5%Power Consumption : 3436 wattprice : 2700Buying In : It's simpleI want to make shares so you can put in small or large amountseach share will be 1$ so 1 share = 1$ and since the machine cost 2700 there will be 2700 sharesI currently have 1800 dollars that I am willing to invest so I will receive 1800 shares leaving 900 shares leftnumbers wise : 1s = 1$shares : 2700Owners : Harvin 1800 sharesFor all buyers who want to buy in here is my btc address: <truncated> send btc with the followingForum nameemail or contact informationbtc adress just so i can do 1 big copy and pasteamount paidamount of shares gainedPayoutsThis will be done through bitcoin sorry you can convert to other <rest of post truncated>

### Reply 1:
<link>

### Reply 2:
Read both the miners and then recomment lol

### Reply 3:
I don't get it the S7 is better. Go buy 2 direct from Bitmain so they also carry a warranty.

### Reply 4:
Please don't, someone is taking you for a ride... In short $2700 is $1,000 over market for that hash rate with 2X S7, which in your case is very important since your electric is crazy high.

### Reply 5:
fixed it for you

### Reply 6:
Indeed, your overpay way too much ... more efficient hardware are available now and for less then what you're going to pay. (Reason I posted the link). Efficiency means the number of watt used per GH. Your 21.3 cents per kWh make no sens at all for mining.I suggest you do some search first before going any further with your investment. I would avoid, whoever wanted to sell you the S5+ as a good source of information to get you into mining.I pay like 0.06 cents per kWh in Quebec, Canada. Big farm like bitfury/antpool probably pay like 0.02-0.03 cents per kw (speculating here but they pay less for sure.)In short, your proposition makes no sens for anyone.

### Reply 7:
I think you've slipped a couple of decimal places there.But yeah, he'd be crazy to mine at the price he's paying. It was 9.168c here last month and I don't think I'm actually breaking even.

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13464,"Date: 2016-01
Topic: Changing stratum server in mining_proxy.exe
### Original post:
Does anyone know a quick way to change the stratum server in mining_proxy.exe?

",[]
23817,"Date: 2021-12
Topic: Bitfury b8 with Huawie power supply hash boards not hashing
### Original post:
Dear membersI changed eltek flatpack and use Huawei power supply The b8 is up and working normally but not hashing Please guys is there anyone using Huawei power supply . What changes I should make to start hashing Thanks

### Reply 1:
It might be not hashing due to PSU you are using Bitfury b8 miners needs 6400w power supply.If that PSU can't provide enough power then it won't run properly you must use a power supply that came from Bitfury or use a PSU that can provide enough power.

### Reply 2:
I am using same output voltage power supply same features rectifier model 48 - 53 voltageAs per i know the missing is software modification but not one of the common use frameware used by most of usI wonder if there is modification could be done with cmd command or whatever

### Reply 3:
I have the same problem and I'm looking for a solution

### Reply 4:
Bitfury B8 is a really rare miner here at Bitcointalk.Another variant of it goes by name Facemen FM2018-B8.I only know that it uses a 48VDC power supply,and you need enough power capacity.You might found more info from Bitfury themself or from Russian language forums (maybe bits.media).

### Reply 5:
Is there any kind of debug logs you can pull up and post? If so, hopefully they could point to either a setup problem or PSU issue. If ya got logs, please use the code button in the tool bar to do it. looks like #

### Reply 6:
Code: Dec 14 12:50:30 777 OpenMiner[8164]: PSU 0.0 0.0 0.00 0.000Dec 14 12:50:30 777 OpenMiner[8164]: Board 46.7 0.3 0.01 0.000Dec 14 12:50:30 777 OpenMiner[8164]: Temp(C) (min/avr/max): 22 / 22 / 23Dec 14 12:50:30 777 OpenMiner[8164]: *** SLAVE HSI STATS:Dec 14 12:50:30 777 OpenMiner[8164]: SLAVE UID Mode Trim Diff HistDec 14 12:50:30 777 OpenMiner[8164]: 0 <truncated> 2 16 0.0% 0x00000000Dec 14 12:50:30 777 OpenMiner[8164]: *** MASTER-SLAVE SPI BUS STATS:Dec 14 12:50:30 777 OpenMiner[8164]: SLAVE UID VER TIME PING L M=>S rx err % S=>M rx err % SS SDDec 14 12:50:30 777 OpenMiner[8164]: 0 <truncated> 0x08166100 167890 189 1 2753107 2583891 0 0.0% 2583873 2583873 0 0.0% 0 0DecCode: Dec 14 13:02:30 777 OpenMiner[8164]: PSU Serial Part Version Date DescDec 14 13:02:30 777 OpenMiner[8164]: 1 0000174950007134 241119.105M 1 2017-12-05 FLATPACK2 48/3000 HEDec 14 13:02:30 777 OpenMiner[8164]: 0 0000000000000000 0000-00-00Dec 14 13:02:30 777 OpenMiner[8164]: PSU Serial State Time Set,V U,V I,A P,Wt Uin,V Tin Tout DefV LED UpTime FSR FS Status NoTX Rx AlarmDec 14 13:02:30 777 OpenMiner[8164]: 1 0000174950007134 INITIAL_POWER 168611 48.0 53.5 0.0 0.0 228.0 23 25 53.5 G-- 0 100 98 Normal 0 173<rest of post truncated>

### Reply 7:
@zoghotaaDoes the B8 miner have a total number of two PSUs?After I looked at your logs, it seems to me that there is an error with the PSU in the first slot (slot 0).It looks like the miner is unable to communicate with the PSU. And also it most likely does not give any DC voltage output. This could be verified with a multimeter.Do you have a new PSU you could try?I think it has to be the exact same type as the old one.edit:Based on all the info I've got,this is the power supply model used in the B8 miner:Eltek Flatpack2 48V/3000W HE<link>

### Reply 8:
I know now how to operate a Huawei psu in b8login with putty and write the command echo -n ' -no_psu '> <truncated> no_psunow b8 hashing

### Reply 9:
That's great! I gave some merit.Can you also share the exact details about the Huawei power supply model you are using? It would be big help for other B8 users in the future.

### Reply 10:
<link> any psu 53v

### Reply 11:
Thanks! So one alternative power supply model for Bitfury B8 miner is Huawei R4850G2 power supply.I saved the datasheet here for long time archiving:<link> Using this psu model requires the small mod which zoghotaa described earlier.

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9266,"Date: 2015-08
Topic: PCI-e replacement cables for modular EVGA PSU series?
### Original post:
So over time of dealing with shitty pci-e connector from Zeus Thunder x3/GAW Rebrand, i've burnt quite a few psu to 6pin/6+8 pcie cables, the psu themselves were not damaged, even tho a single pin was melted overall on one of my PSU.I've now changed the wires and PSU type completely in the ASICs, but now i'm left with PSUs lacking proper PCIE cables. EVGA sell sets at 6$/cable which i find a bit too pricy. TLDR;Is there a good source of quality modular psu to pci-e 6pin cable at a affordable rate? EVGA sell at 6$/per and i find it a bit too pricy to my taste.More specially i'd be interested in;-PCI-e (VGA) evga/quality equivalent PSU to PCI-E 2x6pin or 1x6pin+1x6+2pin cables (ending with 2 pcie connectors)-Perif (Perif) evga/quality equivalent PSU to PCI-E 6pin cables-Perif (Sata) evga/quality equivalent PSU to PCI-E 6pin cablesI'm interested in comparing the availability of these versus buying the materials/tools to make them myself. I would be grateful for any input/suggestion on the matter.

### Reply 1:
cablez sells quality made to order on this site. not sure if he will be low enough for your tastes.he uses 16 gauge wire.I would like to see the evga link at 6$ a cable as I have a lot of evga psu'sthis is a link for full sets<link>

### Reply 2:
Thanks for dropping Cablez's name.Yep, that is the set i calculated the 6$/cable from, which i find fairly pricy since that's 3-4 time the cost of the materials. There's also the issue where there's some cables i don't need.These switches are pretty sexy. <link> i missed his more current method of selling his products (i checked the link in his sig); I see Cablez's thread has been dead for 5~ months. If i don't find a better alternative i think i will ask him for a quote, i am however wondering if it would be worth the shipping to Canada.

### Reply 3:
he made me 4 seasonic cables I have been using them since July 2014 24/7/365 I run 2 s-3's at freq 206 about 420gh 2 cables for each s-3 and a 1000 watt platinum seasonic. can't complain 13 months with about 1 day of down time due to internet/power outages.

### Reply 4:
I used Shakmods for cables on my KNC gear, designed specifically for certain PSU's the EVGA being amongst them, an example...<link>

### Reply 5:
tip there is a seller on ebay that sells nothing but seasonic cables 5 bucks each not custom made of really good quality, no idea were he gets them and seems to have a end less supply . when i bought some ss psu a while back they didn't come with enough PCI cabels so i went looking . haven't bought any off him for a while but what i got was very good .

### Reply 6:
Those cable are real bad i made my own for all zeus miner no hot wires now . no worry of fires etc .. check out this guy, hes on the forums, doesn't like me but i still recommend his cables and they should work with those Evga Psu , they do mine but make sure don't take my word i would make sure , i bought a few to try once i was very impressed with how well they were made etc .<link> but the shipping might kill it for you but those cables are nice.hes right here in the forums .

### Reply 7:
Yeah I got some from him he also sometimes sell psu's.I tried Cablez since they were supposed to be good quality and they were very good.

### Reply 8:
@philipma1957 Might i ask how much you ended up paying for those 4 <truncated> are pretty expensive, they are most costly than retail from EVGA, but it gives me an idea of price comparison anyways, thanks! @toptekThat might actually be workable. I live in Canada, and so does he, so the shipping rate are actually optimal. I will have to ask him if he can make exactly what i need but it might come down to either i buy them from him or i make them myself.--I like the split cables, since it put less heat into one connector. I'll have to work out the math but forking over 40$ is quite possibly worth saving the hassle.

### Reply 9:
How do you install these onto the cables though? I assumed you need a special crimp tool like they use for ethernet networking jobs

### Reply 10:
Maybe 40 counting shipping. I will review my pm with him. Take me a while to find it.

### Reply 11:
It's easy, i don't know how special of a tool you need, the one i ordered from ebay seem to do them and Insulated terminals. At least there is a picture of all the terminal it can allegedly crimp and this is one of them. The thing look like this;Thats the female one.Then you just slide them in the socket and it hold there on its own. To remove them you usually use a small tool that push the hook so you can pull them out, i believe.xD Don't worry about it if its a hassle to go through. If it is more than 2-3$ per cable it is likely to be too much regardless.

### Reply 12:
This is similar to the tool I use:<link> list:<link> list:<link> (female) connectors:<link> sure to add the pins,they are not auto included with the <truncated> per pack,so order<rest of thread truncated>
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20397,"Date: 2015-05
Topic: antminer s3 variability frecuensy
### Original post:
hi . my s3 GHS variability from 440 - 350 GHS why ?and i have asic status one X .i have good psu . 4 connector is connect s3 .

### Reply 1:
is that the estimated that you view on your pool? if yes, then it's normal, otherwise it might be beacause of the software version but i'm not sure, you must go for exclusion to find the culprit

### Reply 2:
I cant understood.F2 i 24 h earning 0.0039 btc it is very low profitable .

### Reply 3:
no it's correct, see the calculator, s3 isn't that powerful to produce more bitcoin

### Reply 4:
I cant understand .So , this earning is for s3 good ? And this variability ghs no problem ?

### Reply 5:
yeah it's goodsee here <link>

### Reply 6:
How is good ? ((400 ghs show me 1$ and i earning 24h 0.90$ .And i have s3

### Reply 7:
+-10% is ok, because of pool luck, you can't expect to earn exactly what the calculator say...

### Reply 8:
i use f2 pool but 0.0039 earning in 24H

### Reply 9:
i already moved on antpool.i think this pool more is profitable at some point

### Reply 10:
It has luck based on it. Antpool overall should equal 100 percent. But keep in mind it varies per day.I still strongly recommend you read about the types of pools. It will really help you understand them.

### Reply 11:
dude 0.0039 is basically 0.004, you're doing good there no need to worry about it

### Reply 12:
why got me f2 in 24h 0.0039btc ?

### Reply 13:
I think you have asked this a few times. I will try to break through the language barrier. Just please read it as some of your posts seem spammy.First you can calculate what it should be over at - <link> think you said in another thread you got 420 GHs (or mentioned 380 when low). If higher or lower you can enter it on coinwars. With 420 GHs in ideal 100 percent you would earn: 0.00443649 btcThere is a 4 percent fee so it would be around 0.0042590304 btc. This tells me either I set speed to high that it's mining lower, or you did less then 24 hours mining, or could be downtime. I hope it helps

### Reply 14:
i already used calculate and tell me that you earning in 24H 1$ 0.0042 . but i got 0.0039 . you told me that on f2 from 0.00443649 btc 0.0002590304 is fee ?

### Reply 15:
There is a 4 percent fee. it is not a set amount so it varies on what you mine. With math you showed there you did not get the first amount (You were 0.00132 btc away). You have mentioned your mine drops to 380 I think it was. This drop in has could easily be causing lost income.

### Reply 16:
0.039 instead of 0.040 is only 2.5% in loss, which should reflect your reject rate, checks it in cgminer, is labeled as a ""R""

### Reply 17:
I would say it's based on your speed. How you mentioned it dropping sometimes to 380, I would say yes that is good for it dropping so much.If it was getting a solid 440 GHs I would think a little more is better. But It all depends on the sped your running, and amount of work that is accepted.

### Reply 18:
i going to will buy s5 but any problem will be ? i will have similar problem (ghs) ?which will buy s5 if s3 ?

### Reply 19:
Honestly I think you would be best off figuring out the S3 before expanding much. It seems you are still having problems such as speed, etc.I highly still suggest contacting bitmain support as the offered. Your problems are just stretching into multiple boards looking like spam on a level. If you work with bitmain support you will be better off.

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15843,"Date: 2016-12
Topic: Idea: very-high-hashrate cloud mining for buying BTC
### Original post:
Currently, it is somewhat difficult for new Bitcoiners to buy BTC because you often need an ID and/or you need to use weird non-reversible payment methods like wire transfers. It occurred to me recently that one way this could maybe be improved would be for someone to offer short-term, high-hashrate cloud mining contracts. For example, a contract could work like this:- The cloud miner would run a mining farm with a significant hashrate.- You pay $x via credit card for y hours of complete control of the mining farm. z TH/s is guaranteed, but it may be larger if the mining farm expands between your payment and your time slot.- If you're paying with a reversible payment method, then you have to wait several months between payment and your time slot in order to prevent most fraud.As long as the buyer actually controls the hardware during his timeslot, and can point it to whatever pool he wants (etc.), I feel that no reasonable argument can be made that the mining farm is directly paying the buyer or managing deposited funds. Therefore, it seems to me that the mining farm would probably not be subject to most of the regulatory issues entangling current methods of buying BTC. Combined wi<rest of post truncated>

### Reply 1:
I think the obvious point in all this is to see that, indeed that is one reason why people buy mining hardware that is expected to lose BTC.It's a way to get BTC and your only contact is with whoever (and however) you buy the hardware from.... as for a trustworthy cloud miner ... that's gonna be the hardest part to find ...

### Reply 2:
Other than the credit card payment, isn't this exactly mining rig rentals' business model? Hardware owner sets price for control of his rig and duration of contracts. Person interested, pays X coin for Y time and gains full control of that rig, pointing it wherever he wishes.

### Reply 3:
I hadn't heard of them -- that does look similar to what I was thinking of. They should try accepting fiat.Yeah, but the current cloud mining contracts are just so terrible that you'll probably end up losing at least half of your money if you try to acquire BTC through them, and you also get the BTC very slowly. They're quite similar to buying perpetual bonds in a high-inflation environment (with the inflation being difficulty increases).And mining with your own physical hardware is a real hassle for someone who just wants to get some BTC.

### Reply 4:
could there maybe be an issue with price increase or decrease in the allotted time slot or the person just being unlucky and not getting the expected amount of bitcoin ?

### Reply 5:
You'd need to find a pretty reliable guy to source the hashrate, which is pretty hard to find these days with even holders of significant hashrate scamming people that buy into their mining operations. Other than that, it seems pretty nice. Don't miningrigrentals and hashnest already provide a service similar to this? I just don't like people hosting other people's miners in any way, shape or form at all really, but as long as it is made clear that the buyer is taking a risk no matter how trustworthy the seller of hashrate is, I guess it works.

### Reply 6:
Seems there is some crack with this way, actually, there is no guarantee like we are using escrow in our transaction, but the difficulty of bitcoin are too difficult for doing about the mining farm rent in this time, I guess the way get bitcoin are not only from mining the bitcoin but it's can replacing with the another alternative with same equal. totally like this, I wanna for renting my mining farm and already having a renter and in this cases I working about mining zec because that's the easiest way today.1. The renter just needs for sending their zec deposit address.2. I was changing my mining pool address with the renter address 3. and starting for mining zec are equal with the exact amount of btc are needed by the renter. 4. the exact amount is already held by the escrow.the serious problem is in the trust. but it's can't providing for a little buyer, and i could skip that for applying minimum payout from the pool for that.I think that's will making alternative way rather than directly for mining bitcoin with high difficulty and a lot of energy.

### Reply 7:
It is a good idea, but problems still remain...If you pay with a credit card, are people really going to wait months to get BTC? I think this is the problem. How do you make an irrevocable payment not difficult if you don't have any BTC?Overall, I see where your going with it, but the using an irrevocable payment to get BTC without waiting for months is the issue. That (to me) is the problem to still solve. Pretty much all mining contracts are sold only with BTC as the payment method for a reason. Some people might wire over money, but it is still a hassle to do that so it looks like you are just replacing one hassle for another. Overall<rest of thread truncated>
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    ""hardware_name"": ""mining farm"",
    ""hardware_is_owned"": true
  }
]"
20208,"Date: 2015-02
Topic: Rockminer R box keeps dropping hashrate :/
### Original post:
I got the R box about a week ago. I never got the 100-110 ghs I was supposed to get until I changed the frequency to 330. Everything was fine until I noticed the hashrate had dropped from 108 to 80. Then my sister came and used the computer and quit cgminer by accident. Now I am only getting 80 ghs maximum but it eventually drops to 40 ghs and won't go up that much :/ I tried on my mac on macminer and it is still pretty much the same... any suggestions ?

### Reply 1:
I think you probably bumped the frequency too high (where your PSU cannot supply enough power/chip overheats). According to Roxie (owner of Rockminer) you need to set your frequency to 320mhz to acheive the correct hashrate. Once you do this, you need to run the R-BOX for at least 2 hours to ""let the stats stabilize"" (I don't know why exactly, but it advises this in the official thread). Good luck!

","[
  {
    ""hardware_name"": ""R box"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mac"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""macminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
9996,"Date: 2016-09
Topic: How do crummy companies like BFL and Hashfast manage to stay in business?
### Original post:
Eventually, you would think that their poor performance and poor reputation would catch up to them and put them out of business. I suspect they get most of their sales from Bitcoin noobs that don't bother to do much research before buying.I don't see why anyone would buy from BFL at this point given their extremely poor performance over the past two years, yet people continue to buy Monarchs and overpriced hosting plans with undefined delivery dates. I guess some folks never learn and are glutton for punishment. I feel sorry for early Hashfast customers because it wasn't clear that they were a crappy company at the beginning, and they lied through their teeth about their refund policy and miner protection plan, but it should be pretty clear now that they are a dishonest company.I guess Bitcoin makes some people so blinded by greed that they act irrationally.

### Reply 1:
Supply and demand, it's pretty simple actually. Until those two conditions equal out a little more you really only have a couple of choices when it comes to mining. You can ride the bull and hope like hell you don't get hurt or sit in the stands and watch the excitement.

### Reply 2:
Well said.

### Reply 3:
Dumb people will always fall for the ""too good to be true"" scam if it is sold well. The left side of the IQ curve will be there no matter how much the supply and demand even out.

### Reply 4:
People obsessed with the possibility that the preorder that's available might put them ahead of the diff curve and be first with the hardware to stay ahead, combined with lots of newcomers who don't understand diff rises and its effect on profits losses from mining. Usually cognitive bias is how people explain their losses away and they move on and possibly even do it again (wiki: post purchase rationalization). It's a market that seems to have no bottom to it, and we'll keep seeing it for some time to come.

### Reply 5:
Pre-orders: just say no.

### Reply 6:
Disagree. If we all did this products like the KnC Jupiter would not exist today because no one would fully fund such a risky endeavor. I think the correct way to look at this is - make informed buying decisions. There is a reason some people stayed away from HF/BFL and the lot.More to the point though the reason why BFL and HF are still in business is because they can afford to - they have raised enough money to stay in business for a while longer... at least until they can pretend they fulfilled their contractual obligations so that they don't end up rotting in some jail. I doubt that anyone who is sane, capable of reading and doing some basic research would buy from these guys again... but then again we've had people here that chose to buy the Monarch so maybe there are some people that just don't get it. That's good news though for sellers!

### Reply 7:
Last summer, it was a coin toss, and I chose KNC.Bitcoinorama, by investigating and attaching his name to it, lent much weight to my decision.That KNC was associated with ORSOC, a legit asic company, lent alot of credence. Luck was involved, surely, but so was due diligence.Why is BFL in biz still?BFL was the first, and has brand recognition. They've straddled the line between legal and illegal,as their predecessors did when they sold ""grey"" market asic devices for re-programming DTV/DISH smart cardsin the early 2000's. Word has been getting out that they are less than scrupulous, their devices last-gen.Perhaps the reason they still exist is because they took care to satisfy VIP customers and let the little guy suffer.They are on the eventual road to implosion. BFL does not care, they already made their score, the rest is gravy.

### Reply 8:
The whole question is similar to asking in 1998 why people use AOL. The service was terrible, there were far better alternatives and no advantages beyond name recognition. Anyone who used them quickly learned they sucked and moved on to better options. They survived on massive waves of newbies, so many that they had no need to retain customers. Mining hardware has been exactly the same.I personally think the MtGox press will shut down the flow of clueless newbs thinking they can get rich quick and choke off the pre-order money.If it happens, some companies are going to go bankrupt, because they rely on pre-order cash for operating capital. This makes it doubly important to stop paying 100% upfront for gear because the next wave of pre-orders aren't going to be late, they will never come at all.EDIT: On top of it all, I would be extra cautious about the solvency of the hardware sellers right now because some of them may have lost a fortune in the collapse of MtGox. 750000 BTC is a lot of deep pocketed people feeling very stupid right now.

### Reply 9:
Gox lasted for a little bit and then..

### Reply 10:
80% of the public is dumber than a box of rocks & growing by the day I'm just bare<rest of thread truncated>
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    ""hardware_name"": ""Monarchs"",
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  {
    ""hardware_name"": ""KnC Jupiter"",
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]"
16326,"Date: 2022-09
Topic: Which miner to choose if you dont care about efficiency?
### Original post:
Hello,So if you had access to free power which miners would you buy? Obviously you would like as many th possible for as little price as possible. Also there is question of quality of miner and how long will it last. Most expensive miner would be the one which stops working after couple of months.Any suggestions?

### Reply 1:
If you don't care about the power source or if it's free then Check Canaan they offer discounts their units are power hungry but almost all of their units are pretty cheap. You can also wait for the next wave about t19 in Bitmain which offers a cheap price. Also, use this tool to find those units with possible big profitability just change your electricity rate to 0- <link>

### Reply 2:
I guess im mostly worried about buying a series with bad reputation. For example, s9 series was indestructible but s9k was awful, also s17 series had a bad rep. Are there any models/series of miners nowadays that have a high failure rate and should be avoided?

### Reply 3:
You already mention what are those units with bad reputations and actually, most of the high failure rates are s17 and t17 series mostly loose heatsink and short circuit are the reasons why they get high failure rates.I think fewer failure rates are s19 but I can't confirm because Bitmain produces s17/t17 more than the s19 series.

### Reply 4:
This may seem a bit unrelated, but I just have to ask, why are models/series of miners with high failure rates still kept in the market? and how come people still purchase them even with their bad reviews?

### Reply 5:
If you don't care about efficiency then you have access to free electricity, at this point this question is meaningless because with free electricity you can power up anything, old asic miners will work for you, even those with less returns higher bills.

### Reply 6:
I would direct you to shop.canaan.ioThey have a large choice of new gear.It is already in the USA.It has a 360 day warranty.The a1166 which I own is about 1388 usd and does 81thIt is likely a good choice for your needs.I do not get a commission from them for linking it to you.<link> watts and 81th. about 42watts efficiency. cost of 1388 plus shipping.I will mention canaan and I may do an affiliate deal in the future but we are yet to do it.I would likely set it up with my business account a1 hashrate llc2022<link> yet to do that.right now we are redesigning our Clifton NJ mine I have a lot of gear offline at the moment.

### Reply 7:
If you see those miners on the marketplace they are used units Bitmain is no longer producing old units like s17/t17. If you found them on the marketplace those are not brandnew and some of them are not 100% working. There are many reasons why people still buy them he might be a newbie, cheap or to learn about mining or maybe they know how to repair them and make a profit.

### Reply 8:
price and efficient may push one to buying the s17 proan s17 pro on a proper down clock may be able to do 1000 watts and 40th this may be attractive to some miners.vs the new avalon a1166 doing 81th and 3400 watts.they can be very close in price. and if your power is a bit costly you may 'gamble' and buy the s17the op said they are able to have dirt cheap power if I were him I would push him at the a1166 gear.but if he was at 7-9 cent power I may tell him take a shot on the s17I have owned both and can say the avalon is better at not breaking.

### Reply 9:
This is the most important aspect of buying a miner for me. Its just that i have not owned anything aside from bitmain gear so wasnt sure about longevity of other miners from other companies. If miner lasts at least a year i will be in profit, ofc ideally it should last 2.5 years in average. Also i dont have to sell what i mined, i can wait for years untill the right price. Also it would be good if spare parts were easy to obtain in case something needs to be replaced. Only other thing i have to consider is a crazy diff increase.Avalons seem to be the cheapest atm so i guess they would be a good pick. Only problem is im from Europe so a unit of a1166 81th that is priced atm 1337$ will cost me close to 2100$ after shipping and vat.

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    ""hardware_name"": ""t19"",
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  },
  {
    ""hardware_name"": ""s9 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""s17 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""t17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""old asic miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""a1166"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s17 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""avalon a1166"",
    ""hardware_is_owned"": false
  }
]"
15894,"Date: 2017-03
Topic: How does merged mining work? Will we be able to merge mine BTC/BTU post fork?
### Original post:
Can some tech gurus come out to enlighten me please?

### Reply 1:
Congratulation you just posted +1 more than your activity that must've be hard for you, merge mine my a*s lol after BU takes over with hostile approach it will prove to the community that the changing of POW <truncated> are indeed necessary and with the support of the community Core will implement many changes to avoid any such attacks and then you could go and merge mine with all the other s*itcoins and have a nice sleep at night thinking you earned some profit.

### Reply 2:
^^^ holy settle down buddy.My understanding is indeed no, merged mining does not apply. In the case of a hard fork you will need to choose a chain to mine on and to support. I cannot elaborate on the technicalities of merged mining yet, still need to learn more about it myself.

### Reply 3:
No you will not be able to merge mine one chain onto another. For merged mining to work, the merged coin needs to explicitly support being merge mined.

### Reply 4:
;)Thanks for the confirmation.Thank ck for sharing this knowledge. This is all I wanted to <truncated> to some random Sr. that carries a mixer ad avatar, umadbrah? The community is broad enough to tolerate most kinds of questions in good faith. take your rage elsewhere. I ain't gonna bite back a dog just because I got bitten by a dog. GL.

",[]
16081,"Date: 2021-06
Topic: Total hash rate dropped
### Original post:
Global hash rate droped from 190eh 9th of May 2021 to 124eh as at today 19th May 2021seems like many hungry power miners switched off.source: <link>my stolen account Lowbander80 was LegentaryMining since <truncated>

### Reply 1:
I quote you to help secure this account.Yeah looks like the s9 is getting dumped.It earns about 3 dollars a day and burns 30 kwatts so it needs cheap power.

### Reply 2:
Looks link BTC price has dropped enough to make people / farms with higher power costs and less efficient miners shut down.Also it's been warmer here in the US and other locations in North America so places that could deal with marginal cooling might have also dropped off a bit.Add that with some normal variance and some Musk fanboys and girls who switched off their miners because they were not green and you have your drop.Not going to worry about it.Mine on.-Dave

### Reply 3:
Yes I totally agree with you. I reckon that the global hashrate will increase in the early september

### Reply 4:
It's called random variance. There is a drop, but it isn't to 124ehThat site does not understand statistics, which is mandatory for anyone trying to estimate the global Bitcoin hashrate.As is typical of many sites who really don't know what they are doing, there is no error range shown on their graph, which since it's daily, that error range will be high.Firstly, as explained here, <link> you use 250 blocks to estimate the Bitcoin network hash rate, you have a 42.9% chance of being more than 5% wrong.With only a smaller sample of 1 day (expected 144 blocks) it a higher chance of being more than 5% wrong.Also, I can't find 124eh anywhere recently on that graph.

### Reply 5:
Yeah, power hungry ASIC farms are prob having to cut down a bit to save off power costs, plus with China announcing their crypto warning I'm sure that really put a massive dent in the hash rate.

### Reply 6:
Clearly the post of a noob who has no idea what is going on ...

### Reply 7:
in this graph on the lowerside has option 30days 60days etc. Check the 30daysalso in the right side has option raw value-7 day average-30 day average : check the raw values.there you will see the drop of 124eh.am not defending that site just mentioning the drop.also today saw in the news problems with the Sichuan distict with power. so the breaking news that china bans bitcoin for the 99th time this year is a fact my stolen account Lowbander80 was LegentaryMining since <truncated>

### Reply 8:
So the hashrate is directly dependent on current Bitcoin value? My RTX 3080s are currently doing 6-7 USD per day even though they are mining at around 92 MH/s.

### Reply 9:
If people stop mining when the BTC value falls yes, you could say that they are linked for sure.I guess that you use Nicehash with your RTX ? You mine ETH and you are paid in BTC if I'm not wrong ?

### Reply 10:
Since u r discussing hashrate price and it's correlation with Bitcoin price, can u comment on what Justin Drake discusses in mins 29-32 about the security of Bitcoin?<link> see u r talking about different hashrate prices than what he estimated?

### Reply 11:
Hello,I am mining in BTC and then transfer them to Binance (when enough has accumulated) for withdrawal in USD.

### Reply 12:
I guess the correct term is that you are mining something else other than bitcoin as bitcoin cant any more be mined with graphics cards.so because I also mine ethereum the prices are displayed also in BTC when you get paid you get paid in ETH not BTCbut since BTC is the dominant crypto its displayed in this pluse the USD is dominant outside of EU this is why its also displayed in USD.my stolen account lowbander80 was legentarymining since <truncated>

### Reply 13:
Oh yeah, sorry I didn't calculate it earlier, so Justin Drake rough estimate is not very far from the truth. Considering 92~100 then it costs ~ 60-70 $ for 10 (which he estimated 50$)-Now next is really total Bitcoin current market volume is about 1 trillion USD???

### Reply 14:
really dont undertand what current market meansis it the bitcoins that are in currency exchange platforms??the rough figures is that now are mined nearly 16,000,000 btc with 40,000 usd each = 640.000.000.000 usd aprox.so even Elon cant manipulate BTC he can only accuse btc mining for being not eco friendly when his cars move with electricityand nearly 95 % of electricity is made from hydrocarbons..my stolen account lowbander80 was legentarymining since <truncated>

### Reply 15:
So, again he is almost right. 1 trillion=10 so it's less with 40,000$ value, almost exact if his talk was recorded in the 60,000$ value.He says it a 10 billion $ to break Bitcoin which is in the power of any state nation like China or even USA.

### Reply 16:
Recently China has announced a Crackdown on crypto mining firms. Due to these temporary reasons and Due to fake Twitter influence, the price of Bitcoin has been fallen. On the other hand, most of th<rest of thread truncated>
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    ""hardware_name"": ""RTX 3080s"",
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16514,"Date: 2023-05
Topic: mined blocked with 11 BTC
### Original post:
did something change? the pool I mine with found 3 blocks with 11+ BTC in it today. When I went to mempool to look at some the recently mined blocks, there are several with 11 or 12 BTC in it.Isn't the blocks supposed to only be 6.25 BTC right now?

### Reply 1:
Nothing changed in terms of the block rewards, it still is 6.25 BTC, what has been happening in the past few days is that transactions fees became pretty high, some blocks generated more fees than the actual block reward itself, so if your pool got 11BTC, it means 11-6.25 was generated from fees paid by those who had their transactions included in that block.

### Reply 2:
And the 6 million $ question is: the pool you mine at does pay those massive fees to their users right?

### Reply 3:
yeah viabtc has averaged over. 8 coins a block for 3 days now.there are other good pools to do.

### Reply 4:
curious OP. What is your setup?solo or pool?

### Reply 5:
I have a Futrebit Apollo miner, mining via Braiins Pool

### Reply 6:
seems like like it, got over 500 sats from those blocks. usually average in the range of 250-300 sats

### Reply 7:
OMG, 6BTC in tx fees? That's a lot. I feel like another wave of mining frenzy is coming. Time to blow dust off your ancient miners and get back to business! Ordinals appear to be a blessing for miners and an issue for everybody else.

### Reply 8:
Is there a connection between brc-20 tokens and miners? Maybe it's the big miners who finance the brc-20 projects.Now the commissions in the bitcoin network have already fallen, but the miners managed to make good money.According to the crypto data analytics platform Dune Analytics, the daily minting fees on BRC-20 hit a record high of 247 BTC on May 7. The value shows that the fees reached their highest level in two years.<link>

### Reply 9:
It will actually stay at 6.25btc in its mining block reward. We know that a mempool is a collection of all transaction makers that have not yet been included in a block. And the mempool also contains transactions that have been submitted to the network but are not caught. Or it can also be mined transactionally but not yet distributed to all nodes in the network. That's why if your mining pool saw 3 blocks of more than 11btc, those blocks probably included transactions that had high fees and that's why. So I think the miners really benefited the most because of the integration of transactions.I have a link that I would like to give you that may help you How many blocks can be made with 1 bitcoin

### Reply 10:
Miners financing BRC20 projects?I don't think so, I believe It was just a coincidence and good fortune to them when the transactions fees spiked. It would make sense at all to spend a lot in fees to spam the network, hoping that the pool you are using is going to mine the next block in order to earn the extra transaction fee rewards.Secondly, the BTC20 tokens spamming the network is not sustainable in the long run, many people would stop using Bitcoin for transactions so it would be a rather short sighted move.

### Reply 11:
I dont think so, every miner i know and i think the whole miners only do miner things, they dont get involved in much more, they dont give a shit about BRC-20 or tecnical analysis or whatever other thing related to BTC or cryptos , they only make their work, nothing more and nothing less.They only do basic maths following the BTC price and follow the new miner machines and with that calculate their ROI and how much they need to buy more or new equipments.Obvisuly they read the news but i dont think they get involved.

### Reply 12:
I was joking. But if you think about it, then 5 large pools control more than 80% of all bitcoin mining and if you calculate the total profit, then it is beneficial for them to unite in order to increase commissions.The big rewards on Ethereum may have been random too, but there were just as many big pools there too.

","[
  {
    ""hardware_name"": ""Futrebit Apollo miner"",
    ""hardware_is_owned"": true
  }
]"
9424,"Date: 2015-10
Topic: [Guide] Antminer S2 Lo-Tech Teardown
### Original post:
Reserved for future info.

### Reply 1:
What warranty do you talking about for such an old device?.. Why not to apply the thermal compound directly to the chips?.. A little drop on every chip will lead to much less consumption of the compound (we all want to use good and expencive thermal grease, right?).

### Reply 2:
It's a disclaimer just to be safe. I applied the same amount Bitmain did because others had stated the chips weren't the only thing needing it.

### Reply 3:
Might want to add width tags to the images, they get a bit too big at high resolutions and it makes it hard to read. Ie:Code:[img <truncated>

### Reply 4:
AntMiner S2 Teardown Warning the below is not authorized by Bitmain and may void your warranty! 0 - General intro.1 - Tools and Supplies2 - Steps and Images3 - Conclusion0 - General intro.This is a quick guide to show the teardown of the AntMiner S2. Rather it be for cleaning and maintenance or maybe just an interest to see what's inside. My interest was while I had mine off for cleaning to take apart the heatsink and reapply thermal compound. This was all prevoked by the possibility of the AntMiner S2 upgrade kits being released soon. The S2's simple design has made it a rock solid performer and the 4 large 140mm fans make it a relatively quiet miner. This is for reference only and I do not take responsibility for problems you may occur. 1 - Tools and SuppliesNeeded tools: Phillips #1 screwdriver Allen wrench 2mm or Ball-head hex screwdriver 2.5mm Putty knife 1"" to 1 1/2""Supplies: Denatured Alcohol or Isopropyl (the higher the % of alcohol the better) Cotton rounds (these seem to work the best) Compressed air2 - Steps and Images*Before you begin turn off your S2 and unplug the power cord*I always turn on the switch after being unplugged to release any stored juice in the psu's cap<rest of post truncated>

### Reply 5:
Thanks. My first topic post. I will fix later today.Meech

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    ""hardware_name"": ""Antminer S2"",
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  {
    ""hardware_name"": ""Phillips #1 screwdriver"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Allen wrench 2mm"",
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    ""hardware_name"": ""Ball-head hex screwdriver 2.5mm"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Putty knife 1\"" to 1 1/2\"""",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Denatured Alcohol or Isopropyl"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cotton rounds"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Compressed air"",
    ""hardware_is_owned"": true
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]"
11706,"Date: 2011-12
Topic: AOCLBF 1.81 by WinD - Dynamic clocks adjusting Manual fanspeed on startup
### Original post:
This topic has moved from <link>

### Reply 1:
Could it be optional? Sometimes I exit AOCLBF to start another miner, so I want to save all clocks & fans settings.

### Reply 2:
XanderusYou couldn't exit aoclbf when switching to the other miner.Only stop all miners in aoclbf. So all clocks wouldn't set to default.

### Reply 3:
Everything working great! I really hope you could make the voltage mod work (go past the BIOS limit and still work). It still won't get past the BIOS Limit.Just a thought, would you be able to create a Frontend to CGMiner (I mean if it is possible)? That would be perfect!

### Reply 4:
because of the on the fly menu options with cgminer your better of with a batch script and <truncated> setting clocks and fan speed)if you need I can show how an example batch script using these would look like. ALso you can set affinity with batch script making a script the most efficient way to run cgminer on Windows.

### Reply 5:
Thanks for the offer. I recently learned how to set CPU affinity using the script for CGMiner. I guess I just value the All-in-one mining solution (i.e. OC, mining, monitoring, tweaks).

### Reply 6:
Getting an Autoit error ""Line 8736 Error:Array variable subscript badly formatted."" When this dialog pops up which is about once a day the OSD is no longer updating. Miners are still working but once you click OK button program shuts down.Any ideas?

### Reply 7:
+1. It happens with 1.80 also.

### Reply 8:
Im still using the 1.75 Version with moded kernels, Will you upload a version where this is included?Or will i have any increase in my Mhash using yours? I saw those OC options and all, but my cards are picky with their voltage, so i have to use Trixx(for my 5830) and Afterburner (for my 5850 MSI TFII).

### Reply 9:
I get this. Set up a script program to restart my box every 12 hours to ""fix"" the problem.

### Reply 10:
I also get the array problem, but then I need to install to non GPU systems and GPU systems of many different kinds. Is there anything else out there as an alternative to this?

### Reply 11:
I am getting an array error as well, ""Error: Subscript used with non-Array variable""Windows 7 64bit Ultimate, fully patched3x 5830'sI tried dropping a downloaded atiadlxx.dll into system32, no dice. Of course, it could be malware as I did download it from what looked like a content farm (it did pass a Total Virus check).

### Reply 12:
Windows 7 64bit Ultimatabout 30-40 hours bugAOCLBF 1.81 by WinDPhoenix 1.6.4what could be the problem?

### Reply 13:
How many video adapters do you have working?If OSD is off do you have this problem?

### Reply 14:
I get this as well usually after 2 or 3 days of mining. Win7 32 , 3 gpusThe mining does continue although the program is ""stuck""It seems to me that it usually happens when the pool I'm on has connection problemsbut it could be just a coincidence .

### Reply 15:
I got this error if when i was mining at less than 24 hours continuously.I was mining with OSD on & this error came when i was mining more than 10+ hours.Only was is to, click ok & restart miner.So i even regularly restarting miner less than every 24 hours.

### Reply 16:
now i am 100% sure that memory leak is caused by disconnectes. I have very stable internet and no problem. ok ... will be watching the code....

### Reply 17:
It is also very tormented.

### Reply 18:
i also would like to ask about this bug? is it in aoclbf 1.75? someone tested it?

### Reply 19:
don't able to remember, coz it was more than 3 months ago.

### Reply 20:
try this one... <link> about stability?

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  {
    ""hardware_name"": ""5850 MSI TFII"",
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  },
  {
    ""hardware_name"": ""Trixx"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Afterburner"",
    ""hardware_is_owned"": false
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]"
21647,"Date: 2017-10
Topic: Single Phase and Three Phase Power -amp Question
### Original post:
So I am 90% I have it correct now after talking with my electrician but I have seen some numbers posted that I think are wrong1 - S9 will draw1372 watts / 240 = 5.72 Amps on single phase powerbut on 3 phase power the math is like thisbut for 3 phase its <truncated> = 3.81 amp draw Then simply add 20%so 120% X 3.81 = about 4.57 amps to be safeSo like 40-41 miners on a 200 AMP panel if its 3 phase powerI have seen people not doing the 3 phase part of the calculation and only doing 34 minersI am assuming you have more power for fans and stuff.. but just to give a simple overviewAm I missing something ?Most people do only have single phase power but larger location are 100% 3 phase power.Any incite would be really appreciated

### Reply 1:
This depends on your application to your electricity provider. The maximum allowable demand load for single-phase service applications is 75 kW. Single-phase service applications with demand load requirement of more than 75 kW shall be served at three-phase service instead. Average household only have 100A load in a single phase supply. This is with reference to where Im from. Im not sure about the regulations in your areas.Having 3 phase electrical system is really cheaper in terms if current (delta configuration system) where the phase current is less than the line current. But be sure to balance your load.

### Reply 2:
Um, we don't do 3-phase calcs because the PSU's are fed single-phase so only single-phase calculations apply. Ja large locations have incoming 3-phase and some of that will feed 3-phase motors and or A/C but thass it. All else is split off as 1-phase.

### Reply 3:
This for sure. You dont make any changes to your calculations between the two. At the end of the day you are still feeding single phase power to an individual unit. You will still only be able to put the same amount of miners on a circuit.Also as T-Gee05 said, it is incredibly important to balance the draw across the phases if you are running 3 phase power.

### Reply 4:
3 phase distribution that feeds a single-phase (or a North American ""split phase"") setup generally uses a transformer to convert - which renders the ""balance the phases"" issue moot.

### Reply 5:
I use 3 phase all the way to the PDU xy xz yzWhats the point of having 3 phase power if you just have to use extra hardware to convert it?

### Reply 6:
Using 3 phase to direct-power single-phase gear often puts too low a voltage on that gear to work properly - though most MODERN power supplies can handle 208 (nominal) input voltage.Most folks don't want to deal with the hassle and PAIN of phase balance - and most 3-phase electric feeds are to places that use gear that NEEDS 3-phase anyway, like large manufacturing machines.Large cryptocoin mines and large datacenters are not the norm in most areas....

### Reply 7:
As in the PDU's have 3-phase line-in and split it off to 3 banks of single phase pairs inside of the PDU's? That would be pretty damn handy...

### Reply 8:
I think I've seen at least one high-end PDU do that, but I'd be more inclined to suspect he splits the 3-phase out to single-phase and feeds the PDUs from the <truncated> is comming to mind....

### Reply 9:
Why does everyone over think and try to over-engineer..It is SOOOOOOO SIMPLE cheap and effective to just do this...

### Reply 10:
Serious code violation, and DANGEROUS.Not a real good idea even if you KNOW what you are doing.There is a REASON the NEC is very much ANTI-SPLICE and has been so for a while - as I recall even the old-style ""wire nut splice"" method is depreciated for new construction in recent versions of the Code, and it's never been considered a ""best practice"".Keep in mind that the NEC came about to prevent FIRES, and who is behind it.

### Reply 11:
You built a death trap.But it is cheaper and it does work.

### Reply 12:
Yes it is 3 phase all the way down into the PDU. Its split internally in each PDU xy xz yz. Each leg has its own 20 amp breaker on the PDU.

### Reply 13:
Splices tend to develop intermittant connections due to corruption over time.They are NOT ""safer than code"".I've spent way too much time REPLACING splce connections that FAILED AND CAUSED ISSUES to listen to your ignorance.Most of the current CODE dates from the 1960s and 1970s with substantial upgrades in every decade since then, not the ""1900s"".If you were an ELECTRICIAN you would understand that - and WHY the code is revised and updated with new and changed information every few years.BTW - GE doesn't sell all that much electrical distribution equipment, Schneider sells a LOT more especially since their buyout of Square D.GE is a lot bigger in ""big unit"" power GENERATION equipment like turbines (gas AND water) than in electrical distribution gear.The Government doesn't write the NEC, nor was The Government responsible for it's creation.In fact, most regulation on building and wiring is done a<rest of thread truncated>
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13800,"Date: 2022-09
Topic: Mining Softwares for S19J Pros
### Original post:
Hello, Setting up a little over 300 Asic Miners (s19j pros mixture of 92th, 96th, 100th, 104th) all of which will be immersion-cooled. I am looking for suggestions on any mining software that can achieve the following:1) Overclocking capabilities up to 5000W2) Fans will be removed when immersed, need software to spoof the fans.3) Farm/Miners can be remotely managed, this will be vital. 4) Capable software that can be flashed for beaglebone5) Decent Dev/Pool Fees I have heard of VNISH (all 3 of them), Awesomeminer, and Braiins. However, I have no experience with them and I would like to gauge the opinion of the community to understand any pros and cons and what the best software may be for me. Any help is greatly appreciated. Thank you

### Reply 1:
Almost all modded firmware is the same the only difference is the developer's fee. You already mention the 5 pros of this firmware but the dev fees are different.Like awesomeminer developer's fee is 2.8% and then Vnish firmware Dev fee 1.6-1.9% only for S9/T9, 2.6- 2.9% for S17/T17 and above units and for braiin's dev fee 2-2.5%.

### Reply 2:
Well two out of three there violate the cgminer software license ... vnish and awesomeminer ... and charge a fee while doing this.It is rather concerning how the majority of bitcoin mining is run under software license violation ...

### Reply 3:
So if you listen to kano you would pick the non violating firmware. Why violate when you don't have to.That would be braiins which means you pay a fee of 2-2.5%If you are buying 300 s19j units I would suggest you run 10 on braiins and see if they clock well for you.Then you can slowly shift the other 290 units over.Some claim brains fees are not transparent but if you set up multiple accounts with viabtc you can see exactly how well it does. 10 braiins via account 1 10 stock via account 2280 stock via account 3run for 10 days see the difference in accounts 1 and 2then do 20 braiins via account 1 20 stock via account 2260 stock via account 3run for 10 daysthen do30 braiins viabtc account 130 stock viabtc account 2240 stock viabtc account 3match the units ratings ie do 2x 92 2x 96 2x 100 4x 104. for the test of 10 against 10match the units ratings for the test of 20 vs 20match the units ratings for the test of 30 vs 30you will have a decent idea of what is best and feel very comfortable with the decision you made.With 300 pieces of gear that cost over 1 million dollars my test design is worth doing. Not hard and fairly scientifically done. Along with no violations of software.BTW kan<rest of post truncated>

### Reply 4:
Braiins, it is a bit slow with the adjustment and in my experience with the 17 series, many times the hashboard can go to 0, we just have to be careful... Let's remember who is putting the money for the miners, and others... (who we are the ones who have to recover our investment)I recommend Vinish... don't think about the fees but about the stability of the miner... to overclock, I've heard that they seek efficiency W/T (brains) although I can't deny that the firmware is good... but I think that they must listen to the miners.. to improve their system..I'm posting a photo of a 100ths s19jpro in immersion... Ahh, and to achieve this... you must have a good cooling system... Don't force the miner... because you can damage the regulators, circuit board and asic. .It won't let me add images.I basically have this... for a <truncated> <truncated> 25 - 49C | <truncated> datakWhERRORS0%0 HWBOARD 1Hashrate (98.0%)53.20 Th/sErrors0 HWTemperature41 - 65 CBOARD 2Hashrate (96.6%)52.31 Th/sErrors0 HWTemperature41 - 64 CBOARD 3Hashrate (98.0%)53.05 Th/sErrors0 HWTemperature40 - 64 C

### Reply 5:
With Braiins OS+ you first need to check if your miners are supported. Those ""J"" miners that came from factory with PSU rev d,e,f,g are currently unsupported.As for overclocking, i have seen them work with the Gullpower at 191TH (S19 Pro 110), though i don't condone that practice, I'm much more in favor of efficiency, especially with the current hashprice. But yeah some crazy people out there did use those 8000W PSUs with Braiins OS+ just fine. The current version has a powerlimit max of 6500W, which could at the wall end being more so you must very careful, start with defaults and only after Tuner is ""Stable"", slowly try higher values monitoring everything especially temperature. Do note that not all aftermarket PSUs work.Only factory firmware requires spoofers.You can use third party programs for this, in this very forum you can check some like foreman, mineitor, awesomeminer, etc. Or set up a VPN or leave a remote desktop app running in a pc onsite.Braiins OS+ runs from micro SD cards ONLY, there is no flashing due to manufacturer hardware locks in place. Testing is only a matter of inserting the microSD card, and you just remove it when you want to go back to factory firmware. <rest of post truncated>

### Reply 6:<rest of thread truncated>
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10456,"Date: 2017-08
Topic: Do i really need a good internet connection and a good pc to use an antminer s7?
### Original post:
I got told that someone heard a long time ago that a miner needed rhe best connection and the best pc to run his miners? Is that true?

### Reply 1:
Good, constant internet connection? Yes. Good pc? Not really, you communicate to the miner via a web browser interface so I set mine up using a tablet.

### Reply 2:
You need a RELIABLE internet connection, it doesn't need to be high-speed.You only need a computer that can use a browser to set up the S7, it runs ITSELF with a built-in small computer.

### Reply 3:
You can run miners on dial-up or satellite connections, the worst that could happen is going to be stale shares and possibly more invalid and rejected, consistent internet is the big factor. You only need a web accessible device to connect to the miner to configure it and you'll be good to go for the most part. Don't forget to check up on your miner every now and then to make sure nothing is going wrong.

### Reply 4:
I've never run my mining farm on dialup - that MIGHT be pushing bandwidth limits a LITTLE for a largish farm but should be fine for just a few mining rigs.I did run it for a few years on a very poor quality Virgin Mobile 3G cell connection, that hit 400kbps on a GOOD wee hours of the night and was usually more like 150-200, no issues.I did run it for 2 years on an Exede sat connection (which was a MAJOR UPGRADE from the 3G except SOMETIMES on lag), the 650-700ms ALL THE TIME lag cost less than 1% in stale shares on Litecoin or Ethereum mining and wasn't noticeable on Bitcoin mining.Exede was metered, but I normally used less than 100 megs a day and that was INCLUDING online gaming and web browsing, NOT just mining (Game PATCHES were sometimes an issue).

### Reply 5:
I wonder if a rasberry pi is good enough as a computer. You guys already said the computer specs don't really matter, just the internet connection. I'll have to research on that later.

### Reply 6:
I never assumed we were talking about farms here, but I actually tried using a couple miners on Dial-Up and it worked just fine. The losses you'll incur running such connections are minor in most cases like you mentioned either way, and dial up CAN be had for free or very cheap in many areas in the US and possibly Canada.As long as you can use a browser or even SSH to whatever IP the miner is running on, or you can open CGminer/BFGminer to run a USB-connected miner, it will work. For Bitmain devices, remember that the default login is root:root.

### Reply 7:
You're missing the point.The S7 already HAS a computer built into it (something similar to a Pi, if not an actual Pi) - you don't need a seprate computer to run it with AT ALL.The only thing you need a computer for is to run a browser to go into the ""web site"" control on the S7 to set it up.

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9500,"Date: 2015-11
Topic: Antminer S2 Help
### Original post:
Hello,Im in college and none of my ethernet ports in my room are enabled. How can i get my Antminer S2 to connect to my computer so i can use my wifis computer to mine. (sharing connections is disabled). Could i change the stripped down Beaglebone Black Rev and put in an actual one and then connect the usb port to my computer and use cgminer?

### Reply 1:
Connect laptop to WIFI, enable ICS and then plug in the Antminer S2.Make sure you configure the S2 to run on Subnet 192.168.137.X

### Reply 2:
It didnt work...the ip that pops up on my s2 is 127.0.0.1 and i cant connect too it. Ill give you .02 btc if you can help me through it

### Reply 3:
but my other question would i be able to mine to cgminer via usb cable to my computer if i upgraded the beaglebone?

### Reply 4:
Did u check, whether the wired LAN adapter on your computer really has it's own subnet?

### Reply 5:
I bought a router and configured it, my computers wifi sends the signal to the ethernet to the router. And the router connects to my antminer. I use my phone and connect to the router so both the antminer and phone are connected. But on my phone i cant connect to either the antminer or router. I dont know what to do. The miner mines fine, but i have it geard at an old pool which isnt around anymore and i need to get to the miners settings to change to antpool

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22977,"Date: 2019-06
Topic: A921 Error 131073 (HUFAILED)
### Original post:
Please see 'Table 4. CGMiner API Log error codes' in my troubleshooting guide.Link: <link> cooling it down and rebooting it make the hash board units work ok again?In worst case scenario those hash board units are broken because of the extreme temperature in your environment.

### Reply 1:
Yeah; I already read your post. This error seems similar to the `131072` but I just don't get the description. What is HU that I need to replace?I will test it in lower temperatures tomorrow since I need to bring it home for further testings and probably tearing apart to replace the HU; whatever it is.

### Reply 2:
Hash board unit.

### Reply 3:
Thank you HagssFIN. Brought it home and tested it again in the 27c environment and it seemed ok. So it must be thermal paste on 3 of the boards that made them fail hot in 40c; even tho 40c is hot and I know it; still, other miners work alright when downclocked.Note to myself and others; the error codes are bit flags. So something like 193 is 128 + 64 + 1 and therefore means (in the same order): was too hot before; is too hot now; is idle nowTopic marked as solved

### Reply 4:
Yes! That's correct.

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22063,"Date: 2017-12
Topic: Question Antminer S9
### Original post:
Hello, I ordered a couples of Antminer S9, but I heard from someone that we need to plug every miner in a different place in th house since its not recommanded to install more than one connected to the same breaker. Is that true? if so, is there any way I can install lets say 5 miners in my house at the same spot? Do I have to buy something to do that? Thank you

### Reply 1:
You shouldnt run these at your house period. The noise from 5 miners will overwhelm your entire house and you will not have a moments peace. Plus you need to run them on 220, if you are in the US you better find an electrical contractor to set things up. Each machine uses 6 times the power of the average computer, you cant just plug them in wherever.

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11526,"Date: 2011-07
Topic: Remote monitoring: Gpu temp, fan speed, hash rate, uptime, share ratio
### Original post:
Hi everyone,I've started writing a web app which acts as a remote monitoring service for mining rigs. I'm trying to gauge the interest this community would have in such a product. Here are some of it's features:* A web-based ""dashboard"" for viewing near real-time updates on important operating metrics like: * GPU temperature * Fan speed * Hash rate * Valid/Stale shares * Up time* Alerts when a metric drops below a user-set threshold. For example, if a GPU temp goes over 90 degrees, or a hash rate drops below 200Mhash, an email, sms, or phone call would alert you within minutes/seconds.At the moment, the server is written in python. A forked version of Phoenix miner sends data to the server through a simple http request like <truncated> etc.The data from the request is saved in a MongoDB database. When a user wants to view their GPU's operating metrics in real-time, they simply point their browser to <truncated> and a nifty jquery-powered dashboard shows all pertinent data.Would this type of service be of interest to anyone?Edit: Also, if you would be interested in alpha testing such a service, either post here or shoot me a PM.

### Reply 1:
Reinventing the wheel?All that can be done with Icinga already

### Reply 2:
You have a good point there...

### Reply 3:
or use a VNC/shell server

### Reply 4:
I'd really like to see something like this as long as it runs in windows. I am currently using VNC but a mining-tailored independent web-app would be so much easier to use.

### Reply 5:
Which works SO fine for those with 20+ computers. Get real, please. The solution he proposes is for more serious operations that one dude and his two computer basement operation.

### Reply 6:
I love the fact is Web-baseany evolutions?

### Reply 7:
edit: The miner runs on linux and windows. It's just a modified version of Phoenix miner.It's browser based, and remotely hosted. So you'd sign up for an account, setup your miners, then point your browser to <truncated> and you'd see something like this:<link> courtesy of Geckoboard.

### Reply 8:
WOWwhere I can start with this! I love itgot it thanks

### Reply 9:
Thats perfect! I really though about coding this exactly myself, but I'm more a web developer than anything else and frankly I don't know how to get to the temperatures for example. Right now I always have to connect via VNC (which must be installed at first) which itself already makes trouble because it somehow interferes with the display drivers and sometimes crashes my rig when connecting.Then all these programs have to run to monitor all the stuff, which consumes a lot of additional energy.Anyway, really looking forward to this!

### Reply 10:
Based on the usage of mongoDB this is using Node.js? I have an similar system I'm hacking away at, but I gather the values from the server side. Were you going to release your codebase?

### Reply 11:
I mean looks cool but where is the widget I can use to connect with the GPU... If tell to write it well I can answer I dont know where I should start... can you please help me?

### Reply 12:
I would definitely love a service like this... but how to monetize it? If you don't make any money off of it, I would have reservations about it being around longer-term...

### Reply 13:
The software is still in development. However, in the mean time, feel free to use this simple utility that I wrote. Only MtRed is supported at the moment, but I'll add the other major pools this weekend. The source code is here, so if you want to submit a patch, I'd be more than happy to accept it.The code to read GPU diagnostics like temperature is platform specific. You really need 4 code bases. One for Nvidia and one for AMD on both windows and linux. I've got the AMD portion written, but I still haven't tackled Nvidia yet.The front end server is written in Node.js, but the data gathering portion uses Flask running on Tornado.Yes, everything will be open source as soon as I release the pre-alpha.GPU diagnostics will be read periodically by the mining software and sent to a remote server. I can't tell you where to start yet, because I haven't released the software.The service will be proprietary. No free plans. A test utility will be available for download which will verify whether your system is supported or not. Like I said above, the software (most of it) will be open source. If someone wants to set up their own servers, they're free to do so.

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23554,"Date: 2021-05
Topic: t2th+ pool lock
### Original post:
t2th+ is pool lock change frimware and reset factory not workinghelp me plz

### Reply 1:
Have you tried to set the pool through Innomonitor software?You can download innomonitor from here <link> change the pool using that software. If not work it might need to flash via TF/SD card.Do you have any idea if what t2th+ control board is?Check the control board physically if it's the g9 or the g19 control board.If it g19 then try to flash it through SD card you can download the boot image under ""Innosilicon A4+ Miner"" in their download page.

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21389,"Date: 2017-05
Topic: MOVED: Decred not mining
### Original post:
This topic has been moved to CPU/GPU Bitcoin mining hardware.<link> discussion to modern bitcoin mining.

",[]
22231,"Date: 2018-01
Topic: running my PSU on 240 vs 120v; better? how?
### Original post:
Hello all, I have some generic PSU that says voltage range 100-250v USA. Currently it's a standard USA 120v wall outlet. I am to understand it will run more efficiently on 240v. I'm very familiar with wiring so I guess I just want to confirm if I should, and how I should. I have an older s7 miner, so I want to run it for all it's worth knowing it will soon be obsolete. I tried a moderate overclock and the plug started melting so I turned it back down. I'm assuming I can clock it back up safely on 240 though, since I was likely just exceeding the 120v wattage. It was nearly 1500w at the wall. Overclocked or not, is 240v actually better? I'm assuming I will just get an alternate plug like this <link> and matching outlet setup, run the two hots to the rectangle and neutral to the round plug?Any thoughts? Thanks!

### Reply 1:
Less voltage = more amperage and more amperage = more heat and less efficiency. Thats why your plug started melting. You need to run it on 240v for the best performance.

### Reply 2:
and is my wiring assumption correct?I should add there is no 120/240v switch on my PSU. So i assume it just figures it out on it's own? From single to double phase without a switch seems weird to me.

### Reply 3:
It figures it out from the plug.

### Reply 4:
Correct the psu will recognize the voltage. That plug will work fine. Yes the two flats are hot and the round one is ground. No neutral for 220. This is for US. I dont know about other countries. Red and black are hot. Green is ground. Make sure you get a 2 pole 20amp breaker and use at least 12Ga wire for 20 Amps. One S7 will not pull 20 amps but I havent seen a 220 breaker smaller than 20amp and you dont want to run a breaker that is larger than what the wire can handle.

### Reply 5:
Thanks all. My questions are answered. I'll update post once done for future researchers.

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23372,"Date: 2020-12
Topic: Firmware for WhatsMiner model M1-V1.2 - with ZYNQ mainboard.
### Original post:
Hello.Just quick question about information where could be possible to find firmware to the old WhatsMiner M1 unit (WhatsMiner model M1-V1.2 - with ZYNQ mainboard).<link>

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9848,"Date: 2016-06
Topic: PSU for Multiple Miners
### Original post:
I am looking for a good PSU to run multiple used Monarch Miners. I was hoping for something relatively cheep single unit that could run at least three miners at 400W max.Let me know your suggestions or general thoughts about what I should buy or how I can go about powering them differently. Thanks!

### Reply 1:
If noise isn't an issue then you should look for a server PSU. There are a few in the classifieds.

### Reply 2:
Check with this guy <link>

### Reply 3:
The only way noise will not be an issue for him is if he lives all alone.

### Reply 4:
I've got a server PSU and board, if you can run it on >200VAC it'll put out 1200W and hooks up 12x PCIe cables for about $90

### Reply 5:
That is correct I do not live alone so noise is a bit of an issue for me. If I got a 1200W ""regular"" PSU and used splitters, would that cause problems for the Monarchs at all? I only plan on running them with very minimal power as to get 500ish Gh/s out of each.

### Reply 6:
no no no no never never never use splitters.I have an ignorance about the monarchs in that I never owned them and I do not know how to set one up but splitters suck.why not bite the bullet and get the evga 1300 g2?it should be good enough to work for you.on sale at amazon $169.00 to 175.00<link>

### Reply 7:
Thank you all for your help. I realize there are not many shortcuts I can take without being hurt in the long run so your input is greatly appreciated.

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24059,"Date: 2023-01
Topic: Issue with GekkoScience 8 Port Base Hub
### Original post:
Original topic: <link> purchased 2 GekkoScience USB Hubs from 419Mining back in April 2022the first one I opened and used - nothing was wrong with it, the 2nd one I opened back in October, and one by one the powered USB ports started to not get any powerI've attached a USB reader to each port for testing and this was using a FutureBit ApolloBTC 200W Power Supply<link> just today, all of the 6A ports are getting no power the only 2 that works is the 2 fan portsMy next step is to try to get the barrel-type power supply and continue to test, hopefully, it'll fix the problem.Not sure if anyone else has experienced this with the GekkoScience USB Hub, really hope I can fix this hubNow I'm noticing that the 2 Compac Fs I had on this hub are showing 0 chips foundthx in advance

### Reply 1:
I've burned up quite a few of these by pushing the sticks over 580MHz. The old hubs seem to die in sections of 2. The newer ones have a ""reset"" when you leave the port unoccupied for a bit of time. The old ones don't seem to have anything that I've found to bring them back to life.I'd be interested if you find a fix as I've got several in a similar state.

### Reply 2:
so I'm guessing I have an old hub since the 2 ports are going out at once then? how else would I be able to tell?it's weird though cuz I have 3 hubs and 9 sticks going at one point, all of the other ones are fine including the 2 hubsdo you know of any place where I can send my sticks to get them fixed? hub too?

### Reply 3:
There are 3x high current regulators, 1 for each pair pf ports. Each regulator is spec'd at 6A max to be divided between each of the 2 ports. The fix is to replace the blown regulators and drop your settings to pull less current than what they can supply.The new ones use PTC-fuses to limit max current to each port to 3.5A(?) and yes once tripped they reset in a few min once they cool down.

### Reply 4:
If you find a place to fix your hubs I can send several to that company.I'm interested in sending several in if you can! (assuming their US based).

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22437,"Date: 2018-03
Topic: S7 Miner Hashing issue
### Original post:
I have a issue with my middle board. When powering up all three boards light up for the entire power cycle. Once the machine cycles I lose the middle hashing board. The red light doesn't light up. When checking the miner software it shows the same chips as the other two and the same frequency. The temperature is at 12 while the other 2 are at 45. All three in the status section show oooooooo ooooo oooooooo oooooooo oooooooo oooooooo. It shows that it can get power but loses it after the power cycle. I tried to search the forum but came up with many things that were similar but not the same. I,ve changed out the wiring to the boards but this didnt change the outcome. Any ideas?

### Reply 1:
If you have extra miner with the same PSU you can switch them and test it if it is PSU's issue, if still issue persist better to do software first before you go to the hardware.You may try to reflash and replace a new firmware from bitmain check the firmware list here<link> go to the upgrade dashboard of your antminer s7 then choose the downloaded firmware and upgrade.If still not working you can try to run hashing board 1 by 1 with the same cable and check if what hashing board is damaged, then if they're running fine without issue in the same cable maybe its connection issue with the cable try to change the damaged cable.Hope that you get some idea.Just adding this for future <truncated>

### Reply 2:
Thanks. Ill give that a try. I did get the other board running. On a board somewhere in my travels trying to fix this. It was mentioned to change to fans to 50% and adjust the frequency. This did get things working however I found that once the board came online I can see some errors. oooooooo oooxo oooooooo xooooooo oooooooo oooooooo they come and go if I power cycle.

### Reply 3:
Still getting those x's but different spots and different boards with each reset

### Reply 4:
Either lower the frequency and hope the chips can handle it, live with it, or declare your S7 as dying. Typically knocking the frequency back a bit helps in this situation.Of course, we are presuming adequate power and good cooling.

### Reply 5:
It might be a hardware if everything in software not working like ccgllc said it may be dying. For now better to adjust and lower the frequency of your miners, like what you said before it is working with adjusting frequency and fan. So, for now, this is the only best solution.If you want to do hardware it would be riskier than software.Anyway I wanted to share this thread it might be helpful for repairing s7 miner <link>

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23062,"Date: 2019-09
Topic: Problem with Avalon 851
### Original post:
Hello,I turned off the miner (Avalon 851) yesterday afternoon, it was working good before shutting down! After turning on, the miners were having troubleTwo of the ""PMU"" lights are yellow and the other two are redExactly all three devices have encountered the same problemI changed Power supply and controller and AUC3 unfortunately the problem was not solvedPlease Help Me!<link>

### Reply 1:
How about a look at the GUI and your api logs.Yellow lights dont mean much.

### Reply 2:
Thanks for the answerI checked the Api Logs but didn't see any <truncated> Version] => avalon8 - 20190404 luci: b9dea8e cgminer: b2356a1 cgminer-packages: bff9628Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[501] MW[0 0 0 366208] LW[366208] MH[0 0 0 0] HW[0] DH[0.831%] Temp[29] TMax[81] Fan[4380] FanR[71%] Vi[1223 1223 1219 1219] Vo[1 4044 125 4059] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] PLL3[0 0 126 4346] GHSmm[3347.55] WU[39774.54] Freq[187.14] PG[10] Led[0] PM[0] ME[1 1 1 1] MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW3[5 9 4 8 6 6 5 4 2 4 6 3 1 1 7 4 2 2 4 8 7 6 4 3 7 5] TA[26] ECHU[133121 131073 133121 0] ECMM[0] FAC0[6 0 0 0 0] OC[0] SF0[0 0 700 750] SF1[0 0 700 750] SF2[0 0 700 750] SF3[0 0 700 750] PMUV[cb10 cb10] PVT_T0[-40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40] PVT_T1[-40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40] PVT_T2[-40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -<rest of post truncated>

### Reply 3:
Looks like a bigger issue with the hashboard 0/1, with an issue on 2 also. Have you opened it to look at the PMU's and hashboards?

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23335,"Date: 2020-09
Topic: container relocation
### Original post:
Hi.Is there anybody know how to connect a mining container from Russia in US?We build mining farm in 20ft container that consume 700Kw. We use 630A circuit breakers to connect it to the grid and whatsminers that can use 200-277V.And we plane to relocate it to US. So the main problem is the connection to the grid here.As I know there are two typicale commercial connections here 120/208 and 277/480 and we can use both.But what is the practice of connecting powerful equipment here?If for example we find a place near the power line with 13KV, do we need to buy and install our own transformer on our side and call electric contractors to do it or we just need to call our local elecric provider (fpl) and they will connect us to the grid with the parameters we want?I tryed to call fpl, but their first question is the address of connection that we still don't have so it depends on ability to connect to..

### Reply 1:
where in FL are you looking to locate it?

### Reply 2:
Well to start, the reason the utility wants to know the address is so they can determine how close the nearest substation is located to where you want to setup the equipment and be sure that their local grid can support what you want. They also need to verify that the area is zoned as either commercial or light/medium/heavy industrial to allow your operation there. An added 'gotcha' is that in the past couple years some utility companies located where power is/was dirt cheap (mainly in Oregon and Washington state) have become very unfriendly to mining operations so that may or may not factor into things.That said, for loads less than a few MW usually the utility provides the main distribution xmfr that steps down to either 208 or 480VAC 3-phase wye (3 lines, 1 neutral) along with connecting the transformer to their grid. Lines from the transformer to the main incoming low voltage service disconnect and from there to your breaker panels is paid for and done by you.Things the utility will want to know are: Desired voltage (208V or 480V 3-phase w/neutral) Type of load (lighting, motors for compressors, data-center) Desired service capacity load Expected average load Maximum short-term<rest of post truncated>

### Reply 3:
Your 1st Merit given for:A clear and intelligent questionActually responding to answers given without needlessly re-quoting everything Both are increasingly rare here...

### Reply 4:
Understood - you will be on the east coast then - but yes they will need the address first to see what is already being supplied to that area and if not sufficient for what you need, what they will need to do to supply it. If they are like my electric company, they will install the transformer but charge you for it.I am currently a lot smaller operation at present - only 200 amps worth of miners at the moment but looking to expand - roughly to 750 kw/h at first and then to a much larger facility.When you are fully set up, if possible, I would like to arrange a visit with you and compare notes - you may be able to assist me with getting more established at my location.Keep us informed on your progress!

### Reply 5:
Thank you. It becomes clearer.4 hours far from your location. In West Palm or near that area. But it is not so strict.

### Reply 6:
As I see you have perfect electricity rates if your provider is Duke Energy. you can get it as low as 3c/kw or something around. So it is not so strict for us to place it here. I mean it is more important to get a low electricity rate. So if you guys have an ability to find a good industrial place in your area where we can set up our equpment, we can cooperate in some way.to show what we do <link> . This is our first ""suitcase"" with s9.

### Reply 7:
currently, my rate is 5 cents - I have discussed with my power company about lower rates - for them I just have to use enough power and they will eventually drop the rates.Let me reach out to them and see what it would take consumption wise to get it to 3 cents rate.

### Reply 8:
It's a bit tricky. You can check here <link> if you have (or will have ) more than 500kW of demand and you're able to turn it on/off properly ( with an eye on ON-Peak time). I think you can reach 1c/kw But you have to mine only 15 hours out of the 24 (on weekdays).If I understand it right ""Billing Adjustments, except for the Fuel Cost Recovery Factor"", in that tariff you have NOT pay for fuel used to produce an electricity for you. May be you can earn some as an ""Interruptible Demand Credit"". Another charges here <link> providers and power plants really suffer from the nonlinear daily loads. So thats why alot of them creates special tarrifs for interruptable or curtailable loads. And it's really suks that we still dont have independent system operator here in Florida like Ercot or MYSO or NYSO.

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14521,"Date: 2011-11
Topic: CONFIRMATION ON PRODUCTION NETWORK
### Original post:
Well I know there's still some glitches being ironed out but we at least have confirmation of real blocks now, both for bitcoin and namecoinCode:$cd ~$tail -c 100000000 <truncated> | strings -n 3 | grep BTCMined by BTC Guild Mined by BTC Guild Mined by BTC Guild $tail -c 100000000 <truncated> | strings -n 3 | grep BTCBTCMined by BTC Guild Mined by BTC Guild Mined by BTC Guild Mined by BTC Guild Mined by BTC Guild Mined by BTC Guild Mined by BTC Guild BTC Guild

",[]
21814,"Date: 2017-11
Topic: Avalon 741 tempature
### Original post:
What is a safe tempature for the Avalon 741 to be at 24 hours a day?

### Reply 1:
You should post this question in the Avalon 741 Hardware thread there is a ton of useful info there, and a lot of people monitor the thread. For future reference.<link> you can keep your ambient temperature below 25 - 30 degrees C that is good, but you really want to watch is your exhaust temp on your miner status. Mine were staying around 88 C with no issues.The specs say they operate between -5 and 40 C.Just make sure to exhaust the hot air from your Miner.

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13544,"Date: 2017-03
Topic: Miner-checker. Simple python S7/S9 realtime data monitor.
### Original post:
Hello everyone! I had recently wrote some python code to monitor my couple of miners locally. Check it out on github if you interested<link> miner-checkerSimple program that helps you to watch what happening with your miners in *realtime*## Features * Show you realtime information* Notifies you on email, if any errors## Install and run* Setup python 2.x * Make conf.py from conf.py.example with your own data* Run mine.py from console## Output explained <1> <2> <3> <4> <5> <6> <7> <8> <9> 192.168.0.90: 13,552.15 (13,414.26) [14,004.90] 0.0007% 1d40m4s OK 71 95 73 91|69 192.168.0.91: 11,796.09 (11,670.20) [11,850.30] 0.0029% 1d39m17s OK 83 95 80 61|48 192.168.0.92: 11,753.55 (11,588.66) [11,850.30] 0.0029% 1d39m8s OK 77 97 88 61|53 ... 1. IP address2. Current hashrate3. Average hashrate4. Ideal hashrate5. HW %6. Uptime7. Asic status, OK if no errors8. Chip temp9. Fan speed in percent. 100% = 5880rpmAny your feedback is warmly welcome

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21329,"Date: 2017-03
Topic: test psu independently from miner
### Original post:
is it easy, or even possible without buying something expensive, to test an antminer s7 power supply. I suspect that my miner may be faulty not because of the miner itself, but rather the PSU. Every 5 minutes the miner hashes, then stops then starts again. I just got a new s7 and it has the same problem, so i think it may be the PSU. Is there a way to test just the PSU? thanks

### Reply 1:
You need to test the psu under load, not easy. Easier to beg, borrow, or steal another psu and then run with that for a while. That'll tell you if it's the psu or miner/setup.What psu are you using, btw? Is it rated high enough for an S7 (>1400W from the 12V rail)?

### Reply 2:
yeah it is 2000 watts. it was working perfectly fine a couple of months ago so something mustve gone wrong. I read some where that using a multimeter could help me, you think that would work?

### Reply 3:
Yes, if you know what you are doing.If you are not so familiar with basic electronics, then VRobb's advice would be the best one. Try another PSU.

### Reply 4:
^^ and go to a hardware store or wherever and buy a voltmeter. Doesn't have to be expensive, just has to be digital so you can see at least 1 decimal point or more. All Ants need at LEAST 11.9vdc feeding them as measured at the PCIe plugs.Poke the probes into the sockets alongside the wires to avoid shorting anything.

### Reply 5:
just tested it and each PCIe plug got 12.8 vdc, so i dont think that it is the PSU. any other ideas? The LED is solid red and i cannot even access the miner config page. also, after a couple minutes of being red it begins to beep every couple seconds.

### Reply 6:
With both miners you can't access the GUI page or just the 1? If you are on the right address and never connect then the controller and/or BeagleBone may be dead.Normally I'd say ja the voltage looks good and actually much higher than expected under load. What is the voltage with no-load? Even my IBM 2kw supplies max at 12.2v no-load and drop to 12.1v measured at the plugs @ 1.3kw load. Does the miner ever start blowing hot air? If no then it is never hashing. Query: What batch are the miners? Batches 1-5 use 54 chips and have no Vcore regulator. Voltage per-chips is PSU supply divided by number of chips. If you look in the hot end all you see are heatsinks.Batches 6 on up all have 45 chips and a regulator. Look in the hot end and you will see an open area with the circuits.

### Reply 7:
If you are running the 54 chip version you probably dont want to push almost 13v into them since they do lack the voltage regulation of the later batches.

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10554,"Date: 2017-09
Topic: S9 is on sale on chinese bitmain site
### Original post:
S9 is on sale on bitmain china website but not for everywhere else

### Reply 1:
Do you know if it is going for the same price or is it reduced? You have any snapshots you could post?

### Reply 2:
You can check here

### Reply 3:
Thank you XXCSU

### Reply 4:
Thanks for the link.There is new rig G1 and G2 too.Anybody can order or only china people ?

### Reply 5:
can anyone answer that?

### Reply 6:
If you add them to your cart, but switch language to English, they disappear -- I'm guessing you need to be in china to order.

### Reply 7:
Tried to check out, it only allows China as the country for shipping.

### Reply 8:
Anyone have a list of possible purchase sites that are reputable?

### Reply 9:
From experience ordering from the Chinese side of Bitmain: crappier service, more expensive miners, no actual QC (I swear to god, they probably sell some overseas RMA).If you guys want to buy them there are a ton of resellers but they're even more expensive. I only ever bought from the Chinese Bitmain once (My sister lives in China). Needless to say, buying from their overseas department is much better. But I suppose people are willing to pay more for shittier products because <truncated>

### Reply 10:
Bitmain doesnt use resellers. If you buy from a reseller you pay an inflated price and get no warranty so beware.

### Reply 11:
Why no warranty ?

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    ""hardware_name"": ""G1"",
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10248,"Date: 2017-04
Topic: Antminer T9 - Why would you purchase one ?
### Original post:
HiJust noticed these on Bitmain site and the stats looks terrible compared to a 14Th S9.T9 - 12.5Th -1576W +7% S9 - 14Th -1350w +10%Lower hashrate and uses more power ?Will they be making anymore 14Th S9's ? Or is it the end of them ?Anyone ?

### Reply 1:
How about reading the existing T9 thread?All the reasons are in there and have been given ad-nausea.

### Reply 2:
I would not be asking if i could find a thread on it !!!I ALWAYS search first but can not find much details except the one about the S9 and T9 becoming obsolete ?

### Reply 3:
T9 thread is here <link> about 12 lines below this oneAnd the T9/s9 will NOT become obsolete if segwit is voted in. They will co-exist just fine.

### Reply 4:
Thanks for link, i did find it, reading through it now, did not realise it was first released in January !First i have of heard of it today !!

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11166,"Date: 2022-07
Topic: [Buying advice] S17 53TH or T17+ 58TH ?
### Original post:
Hello,I've searched and couldn't find an answer either online or on this boardI'm considering buying either an S17 53TH or a T17+ 58TH but I can't decided between the two.Both seem to be using the same amount of power 2,350WLow power mode is what I'm after, with lower fans, temps and power usage.In theory, the T17+ should be the winner but I'm not sure since I don't have the information.Can someone please let me know which one of them can be set to use the least amount of power? I'll be using custom firmware for undervolt, auto-tuning and fan control.Thank you

### Reply 1:
Based on the t17+ specs the hashrate of this unit is around 64Th/s with 3,200w and the s17 hashrate is around 53Th/s with 2,385w.Check the whole specs of these units below- S17 specs- T17+ specsSo based on their specs s17 is a bit more power-efficient than t17+.How about the price of these units and your Electricity rate?If the price is the same and you have a free power source then choose t17+ or buy s17 if you are paying above $0.04kw/h.

### Reply 2:
I believe the S17 has 144 chips to the T17's 132, which means that even at the same power budget the S17 chips could be run at a more efficient setpoint yielding a slightly higher overal hashrate.

### Reply 3:
@ BitMaxz : Thank you for your reply.Both the T17+ and the S17 are listed at the same price and with the same 2,350W power draw. Keyword: <truncated> isn't an issue right now but could be in the future. I was also leaning towards the T17+ but again, my goal is to run them at their lowest possible speed with the least amount of power draw.I did have one S9 a few years back and I remember I could set it at low as I wanted even at 1TH with the BRAIINS OS. Would the same hold true for these models also?@sidehack : Thank you for your reply. So at low power modes, the S17 would be faster than the T17+?Whichever I choose, they will have their chip radiators re-pasted so they don't fall off, an issue that plagued both models from what I've read.

### Reply 4:
After much research(these topics are new to me), I've settled on the S17 Pro since the goal is energy efficiency, this seemed to fit well with my needs.Thank you again for all your help, hopefully I'll finally have a working ASIC

### Reply 5:
The BM1397 chips used in S/T17 aren't as stable at low speeds as the BM1387 used in S/T9 series were. You might have trouble with losing hashing efficiency clocking under around 400MHz (about 40TH with the S17 Pro, I think) but with an aftermarket auto-tuning firmware on there, finding a suitable setpoint should be pretty straightforward.

### Reply 6:
Do you use racks for this? I'm thinking to buy rack here <link>

### Reply 7:
Got the S17 Pro, tuned with Braiins OS. Tried lots of other firmwares, this was the only one that did what I needed as in stable low power, heat & noise and fan <truncated> highest chip temp55C highest board temp55% fansLooking online, these are within spec. As far as I'm concerned, it's behaving as expected.Please let me know if something is wrong with the above. Until then, I'm enjoying finally having a working ASIC miner. Maybe next year I'll get another one.Cheers!

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  },
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    ""hardware_name"": ""BM1397"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1387"",
    ""hardware_is_owned"": false
  }
]"
23977,"Date: 2022-06
Topic: What can i do with this VM / CPU Mining ?
### Original post:
Hi Bitcointalk!This is my first topic here So i have a few question. 1.What can i mine with the following specs?2. What operating system would be the best?3. How much would it generate pr day?192vCPU384Gib Memory Thanks for taking the time to read this!

### Reply 1:
You are in Bitcoin mining support and Bitcoin is no longer able to mine with a PC or CPU/GPU. Mining Bitcoin can only able to mine with ASIC machines like Antminer or USB miner(Compact F as sample).Better start reading this First time/Small miner reference for getting started.

","[
  {
    ""hardware_name"": ""192vCPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""384Gib Memory"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC machines"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB miner(Compact F)"",
    ""hardware_is_owned"": false
  }
]"
22576,"Date: 2018-05
Topic: Antminer S9 good hasboards but not hashing!
### Original post:
I have several S9's running with good hashboard status but the GH/S(RT) is ""0.0000"" for every board. When I reboot they start hashing but quickly fall back to ""0.0000"". The chips are running hot at 90+. Any ideas on what is going on? Could it be network?

### Reply 1:
Not the network. I see this occasionally in my S9 farm as well.You can try different firmware. If you brave and stupid (like me), you can try the fixed frequency firmware as a last resort. So far, I have not bricked anything doing that, and once in awhile it helps, but your mileage may vary.Basically you have a card that is failing. The trick is to see if you can find some firmware that bypasses whatever is going wrong.Good luck, and welcome to the world of shitty, but cheap, S9s. I have personally sworn off of them, after buying about 150, and only buy Avalons now when I can catch a good sale.

### Reply 2:
Actually, looking at the kernel log I see that the temperature is too high! Bummer. Any idea on why this particular machine might be experiencing this? I have many other machines on the same rack and they are all running at ""normal"" (e.g. 70-80 degrees).Code:Fatal Error: Temperature is too high!do read_temp_func once...do check_asic_reg 0x08get RT hashrate from Chain[5]: (asic index start from 1-63)get RT hashrate from Chain[6]: (asic index start from 1-63)get RT hashrate from Chain[7]: (asic index start from 1-63)Check Chain[J6] ASIC RT error: (asic index start from 1-63)Check Chain[J7] ASIC RT error: (asic index start from 1-63)Check Chain[J8] ASIC RT error: (asic index start from 1-63)Done check_asic_regdo read temp on Chain[5]Chain[5] Chip[62] TempTypeID=55 middle offset=30read failed, old value: Chain[5] Chip[62] local Temp=91read failed on Chain[5] Chip[62] middle Temp old value:102Done read temp on Chain[5]do read temp on Chain[6]Chain[6] Chip[62] TempTypeID=55 middle offset=27read failed, old value: Chain[6] Chip[62] local Temp=87read failed on Chain[6] Chip[62] middle Temp old value:98Done read temp on Chain[6]do read temp on Chain[7]Chain[7] Chip[62] TempTypeID=55 middle <rest of post truncated>

### Reply 3:
Open it up and see if you have dust, dead moths, or lose heat sinks?

### Reply 4:
It says read failed for gathering temps so I think it is basing things off of the last recorded high temperature. Something weird going on there for sure.

### Reply 5:
On your miner's <truncated> you could use F12 and find the <fieldset class=""cbi-section"" <truncated> <truncated> and <div class=""cbi-value"" id=""temp_over"" <truncated> lines and remove the display:none attribute to show the checkbox and see if disabling that thermal protectioin temporarily could help you to get the miner running again.<link>

### Reply 6:
Disabling thermal protection is a terrible idea. IF it does start hashing above the thermal limit it will shortly catch on fire.

### Reply 7:
Good point, you should only use it as a troubleshooting tool in these rare situations, otherwise if you leave it disabled you can start a fire / destroy your miner / void your warranty / etc like this <link> you still are under warranty you could at least consider sending the miner back to Bitmain for warranty repair.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_is_owned"": true,
    ""hardware_name"": ""Avalons""
  }
]"
13976,"Date: 2011-05
Topic: CoinMeter - Rainmeter skin for deepbit.net
### Original post:
CoinMeter<link> is a Rainmeter skin which displays your basic deepbit.net info on your desktop. It uses the 'webparser' plugin to retrieve information right from the website.Currently it displays your account name, your BTC balance, your MH/s speed and your shares (as seen on the image). The refresh time is based on your account settings so don't hammer the button (and deepbit.net) every 20 seconds if u have refresh set to 5 minutes How to install (if you are a Rainmeter user already just skip to the 4th point )1. Download and install the newest rainmeter from official website - rainmeter.net 2. Download CoinMeter3. Extract the .zip contents and move the ""CoinMeter"" folder to your <truncated> folder4. Open the <truncated> file and edit the 30th <truncated> your account info. It should work without the login details if you have logged to the site with IE and stored the password but I'm not 100% sure so just better fill them in 5. Launch the Rainmeter, right-click on the system tray icon and chose Configs -> CoinMeter -> CoinMeter.iniLet's say this is an alpha version, feel free to post comments or maybe ideas of what it should have in next version I'm currently working on adding som<rest of post truncated>

### Reply 1:
Very cool. Do you think you can add a ""withdraw"" button, like in guiminer?

### Reply 2:
the button uses the 'post' method and I don't think sending any info to the website is possible in rainmeter.. Maybe with javascript. I'll ask in the forums. Thanks for the suggestion

",[]
21826,"Date: 2017-11
Topic: s9 or L3 (Ambient Temperature issues)
### Original post:
Hi,Its just 2 days I started mining with s9 and all going well as it's winter time and getting 14 Th/sHowever in summer temperature in my area reached 40c+ c and sometimes to 50c also (104-122 F)I am planning to increase my mining capacity and want to order new machines.What should I do?Will s9 would work if temperature reach to 40c (104 F)? At what capacity?Would L3 be better option?Suggestion would be <truncated>

### Reply 1:
You will need to get those ambient temperatures down quite a bit if you want your machines to run in the summer. They dont downclock from heat, they just shut down the miner until you can restart it so you will have a constant battle restarting miners all day every day. You need to get those temperatures within reasonable limits. You want to aim for say 25c ambient intake temperatures if you want these miners to be stable and reliable over the long term.

### Reply 2:
HiWhat people are doing to overcome this problem?Air con won't be feasible as it consumes electricity.What about Evoperative cooling?

### Reply 3:
Proper ventilation. We use exhaust fans to expel the hot air that is coming out from the miners and at the same time suck in colder fresh air from outside. Exhaust fans are cheaper to operate than air-conditioning system. I will not recommend evaporative cooling because it will humidify the air which is not good for electronic devices. This is good if you are in a very very dry climate area. But if you are in a humid area, this will be bad to your miners. SO i will not risk it.There are many ventilation threads here already that you can read through the discussions to get some ideas.

### Reply 4:
This is wrong, please disregard what he said. Evaporative cooling is what a vast majority of large scale bitcoin datacenters use to cool the incoming air charge. In a place that is so hot an dry this should make a large difference. Ventilation is good but if you are bringing in 40c air from the outside its not very helpful for cooling.

### Reply 5:
I have experience working with Evoperative cooling as I managed a poultry house some time back which is based on same system. Maximum I can cool down was 5 DegreesI have seen a video where a guy installed 2 tons x 2 AC = 48000 btu to cool down 15 machines.What other people are doing?

","[
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""exhaust fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""air-conditioning system"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Evoperative cooling"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AC"",
    ""hardware_is_owned"": true
  }
]"
11335,"Date: 2023-08
Topic: Is there interest in a standalone low power miner?
### Original post:
What is the difference between yours and the GekkoScience Compac F?<link> like this are and will always be a hobby project for people to play with but there is nothing wrong with making it and trying to sell it.Just keep in mind, you will have to support it, and deal with issues with them and so on.But, it still looks like a cool project.Post image links, since you are a new users they will not show up in the post but people can quote / click on them.-Dave

### Reply 1:
The big difference is that the Compac F needs a computer attached to it to run as it uses cgminer software that requires hefty hardware to run on. My miners are standalone and require no computer.Some links to my github;Picture of webinterface of my software <link> runs on the miner)Github page to hard&software (to be updated soon, I'm only one person doing ALL the work) <link>

### Reply 2:
Yes, do it!! The world needs open source Bitcoin mining hardware and firmware!

### Reply 3:
Such a nice project I'd like to have them but still it depends on the price of this unit and it depends on the specs like how much power this miner can consume (it looks the same as Compac F that can be consumed around 15w).I like the dashboard the design is very simple and since you said you can connect through wifi and it doesn't need Raspi because the board is Arduino then that's a big advantage compared to Compact F.So for me, I like it but I don't know if I can afford it that is why like I said it depends on the price of your miner.It seems the idea comes from Duino mining from Gunther where you can mine Duco?

### Reply 4:
Welcome back on the forum OP!Very interesting project.Yeah, personally I'd be interested in supporting your project and would happily buy a few units from you, I love letting little ASICs like those (usually from Gekkoscience) run solo.I'd even like to be a reseller in Europe for you if you're interested, if after I've been able to test them everything's OK, I'd be sincerely interested.I'm currently in the process of learning how to make Bitaxe myself, a DIY sha256 ASIC based on BM1397 created by Skot (who replied to you above) that reminds me a lot of what you're describing. Feel free to check out this Github if you're interested: <link> hesitate to contact me privately if you'd like to chat, and I wish you all the best!

### Reply 5:
I think the potential user base is pretty big. If the power consumption is so low that you can basically not recognize it on your monthly bill, then it would basically be a free nerd lottery where you can just simply run it forever and hope to hit a block.Do you have any estimates how much such a device would cost to produce and what it would finally cost to sell so it makes sense for you?I think if you can have such a device for under 100 USD then there is a good chance that it will catch on.

### Reply 6:
Yes indeed, but even if the price of such an ASIC was well over 100 usd it would sell itself easily. Gekkoscience Compac F offers the same kind of performance (approximately) and can be bought for between 250 and 400 usd depending on the reseller and the time.It doesn't have to be so cheap to be sold IMO. In my opinion, the real advantage would be to produce ready-to-sell PCBs and offer DIY kits if you want to sell cheaply, but that would limit the customer base even more. In any case, as OP said, it's not at that stage yet

### Reply 7:
But the ESP32-C3 is a computer... All asic miners have one to run the mining software (aka ""control"" board), they are ARM based, but i assume sooner or later they will switch to RISC-V like you did. China is particularly strongly interested in moving out from arm into risc-v.So technically you just need to plug the Compac F to one of those SoC solutions via USB and port/compile cgminer to the appropriate architecture or replace it with your own mining software.I'm curious about the availability of BM1397 at this point, shouldn't you aim for later chips now?

### Reply 8:
The distinction is that the ESP32 doesn't run Linux. Because of that it can be significantly lower performance, and cheaper. All the while still being a very decent miner for ~6 ASICsCgminer is really setup to run on a desktop OS (like Linux, macOS or Windows), and will not easily port to bare metal or an RTOS on the ESP32.IMO BM1397 is still in the sweet spot of price, performance and efficiency (for people who aren't Bitmain). For example the BM1397 has a higher hashrate per chip and is cheaper in small-ish quantities than the BM1398 (S19) and BM1362 (S19J Pro)

### Reply 9:
I think 0.2th - 0.25th is and will be for a good period of time enough hashrate to reasonably connect to any mining pool, it's completely fine if I get a valid share every 5 mins instead of every 5 seconds, the pool manages its resources through share difficulty and the hashrate of the device is irrelevant to them, they maintain certain traff<rest of thread truncated>
","[
  {
    ""hardware_name"": ""GekkoScience Compac F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cgminer software"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Raspi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Arduino board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICs from Gekkoscience"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitaxe"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1397"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ESP32-C3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1398 (S19)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1362 (S19J Pro)"",
    ""hardware_is_owned"": false
  }
]"
21339,"Date: 2017-04
Topic: HELP - My first Antminer S9 is reaching 81F ??????
### Original post:
HiJust had a new S9 from latest batch and the temps range from 59 -81f !!There is no way to adjust frequency, the temps on chain 2 are 71,74,81fIs this OK, it's in a cold garage, plently of ventilation ?Cheers

### Reply 1:
Those are ok values and the unit is CELSIUS, NOT FAHRENHEIT. 81 Fahrenheit would be pretty cold temperature value for a miner, don't you think?

### Reply 2:
Wow, i presumed F as the temps were so high, i presume since they control their own freq then it would slow down at a certain temp, or be a variable frequency ?

### Reply 3:
The autotune frequency setting is chip quality dependant and for cooling there is an automatic fan control.105 C is the high limit, below that and you're fine.

### Reply 4:
Thank for the info, got another two on the way and need to find a way to 'rack' them. metal shelve them ?I just have the Bitmain PSU alongside the miner and the cables are TIGHT !Cheers Hag

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": true
  }
]"
21999,"Date: 2017-12
Topic: How to start mining bitcoin on my own computer
### Original post:
Hi i'm new bout' bitcoin i'm wondering about how do i start with bitcoin. i'm interested in mining bitcoin by using softwareany one can tell me thanks

### Reply 1:
You can not mine bitcoin on your computer. To mine bitcoin, you will need special ASIC mining equipment that you can order online from China <link> read posts on this forum first before deciding what and how to mine crypto currencies.

### Reply 2:
thanks sir i'm really new

### Reply 3:
Here is the read before posting post that gives you the rundown.<link> the beginner help section off the main page.And any Google search try only reading pages from 2016/2017. As with any technology the newer the I formation the more relevant it will be.

","[
  {
    ""hardware_name"": ""ASIC mining equipment"",
    ""hardware_is_owned"": false
  }
]"
20332,"Date: 2015-03
Topic: blktmpl error: Unrecognized block version, and not allowed to reduce or force it
### Original post:
bfgminer version 5.0.0-unknown - Started: [2015-03-31 14:57:01] - [ 0 days 02:30:27][M]anage devices [P]ool management ettings [D]isplay options [H]elp [Q]uitPool 8: solo.ckpool.org Diff:53 -Strtm LU:[17:27:14] <truncated> #350111: ...270b28c7 Diff:46.7G (334.4P) Started: [17:21:17] I:31.63uBTC/hrST:22 F:0 NB:36 AS:0 BW:[ 3/ 0kB/s] E:10.64 BS:55.2k1/16 68.0C | <truncated> | A:1288 R:350+0(1.3%) <truncated> 0: 68.0C | <truncated> | A:1293 R:350+0(1.3%) <truncated> 17:24:41] Accepted 00f6b6f9 BFL 0l pool 8 Diff 265/53[2015-03-31 17:24:43] Accepted 01ed00bb BFL 0n pool 8 Diff 132/53[2015-03-31 17:24:45] Accepted 0183a90a BFL 0o pool 8 Diff 169/53[2015-03-31 17:24:49] Accepted 01d3e8b6 BFL 0e pool 8 Diff 140/53[2015-03-31 17:24:53] Accepted 035985cc BFL 0i pool 8 Diff 76/53[2015-03-31 17:24:54] Accepted 02ce5f02 BFL 0e pool 8 Diff 91/53[2015-03-31 17:24:55] blktmpl error: Unrecognized block version, and not allowed to reduce or force it[2015-03-31 17:24:58] Accepted 011ce720 BFL 0b pool 8 Diff 230/53[2015-03-31 17:25:08] Accepted 037f2f50 BFL 0d pool 8 Diff 73/53[2015-03-31 17:25:10] Accepted 04a77db6 BFL 0n pool 8 Diff 55/53[2015-03-31 17:25:11] Accepted 0040649a BFL 0c pool 8 Diff 1.<rest of post truncated>

","[
  {
    ""hardware_name"": ""BFL"",
    ""hardware_is_owned"": true
  }
]"
16888,"Date: 2011-08
Topic: Run in root? Server X??
### Original post:
What does this mean??bit@Bit:~$ aticonfig --odgc <truncated> This program must be run as root when no X server is activeI just bought a new computer, had a computer shop make it, and went through all the steps but I can't tell what number my GPUs are. I am mining successfully on my CPU so it works, but why won't my cards show up?

### Reply 1:
Try using <truncated> sudo aticonfig --odgc --adapter=all

### Reply 2:
Hmm... I'm going to assume you really do have an instance of X running. What's the value of $DISPLAY returned by the terminal window in which you are trying to run aticonfigCode:echo $DISPLAYYou should get something like Code::0.0I've found no way of managing the cards without an instance of X running. At the very least I need a simple xorg.conf which points out my two cards and to run xinit in the background. When I ssh into my miner I need to run Code:DISPLAY=:0 before aticonfig is fully functional. sudo will help to an extent but there are still some things you will not be able to do.

","[
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cards"",
    ""hardware_is_owned"": false
  }
]"
15787,"Date: 2016-07
Topic: someone should please teach me how to mine
### Original post:
Hello everyone.My name is Terry Ligom, from Nigeria.A student of federal university o Agriculture, Benue state Nigeria.Have been hearing about Bitcoin and am interested in it.Unfortunately, I don't even own even 1 (One) Bitcoin and I can't affor any.But am willing to learn how to minn and anysite that I can earn free bit coin from.I see prospects in Bitcoin.I need ur support pleaseeeeEmail: <truncated> +2347034595275

### Reply 1:
Hello friend. I may have some bad news for you about mining. Since bitcoin started many people have developed mines and the competition has skyrocketed with the price. In the beginning you could mine with the cpu of your computer. Then mining went to hacked gpu's (video cards). Finally, chips made specifically for bitcoin mining were invented. After than the competition switched to who has the fastest chips and the most chips.So today a profitable mine looks like the one pictured below. It will take tens or hundreds of thousands of dollars to be very competitive now.Mining may not be your best bet with bitcoin. But there are still many opportunities in the bitcoin economy. -Cheers

### Reply 2:
Wow!Thanks for throwing this light to me.Am grateful.Please, how do u think I can benefit in bitcoin?Any suggestion will be highly appreciated.Thanks

### Reply 3:
You said you don't have any bitcoin, do you have any money at all to invest in anything or are you just looking for handouts?

### Reply 4:
Dont be cruel with the newbie! If you cant afford any bitcoin, do some jobs and get your payment in btc(offer your services coding,design etc) go make some faucets (very small amount in there), join a signature campaign ,but you have to build up your rank a little

### Reply 5:
Find a service or product you offer, and earn bitcoin. Avoid mining - trust me. I was a miner

### Reply 6:
I loved using miners to heat my apartment. Now I have a home though and it would be awesome to be able to put an S7 or S9 in every room in my house, but I am not sure how I could go about that internet wise. I have tried a bridge connector thing and didn't have any luck getting it set up. So unless there is a really well built wifi system added into miners (which won't happen), I don't think I could do it.

### Reply 7:
Thanks for your advice. Am really grateful. Thanks for the advice.

### Reply 8:
Thanks for your response.I have started earning some Satoshi on moonbitcoin and Bitcoinker already. Honestly, I did not know more about BTC untill after my post here.Am from Nigeria, and a lot of people don't even seems to know what crypto currency is all about.It's due to my research about it that I came across this forum.Thank for being nice.Am learning fast too. I now have my BTC wallet There seems to be prospects in BTC.1000000 Satoshi will earn me 1BTC.Gradually, I shall get there.Please, help me with some sites that are reliable and genuine to earn more Satoshi.Thanks

### Reply 9:
This one is my favorite <link> (with ref link) <link> (with out ref link) make your pickit have faucets and gambling so im not doomed to solving faucets all the time if i dont want to (i always dont want )

### Reply 10:
if you are working on faucets then i will advice search about faucet rotators thay are a list of 3000-4000 faucets together called faucet rotators. and by the way honestly i will not advice you to go on faucets because i belive they pay very low , and another think is study about private key and public key present in every bitcoin wallet and how they work.

### Reply 11:
Mine is quite hard now a days for specially bitcoins. But if you have computer then can use it for mining other cryptocurrencies. And after mining you can simply exchange them with exchanger with bitcoins and can get some bitcoins.

### Reply 12:
As everyone said above, mining has become really very competitive. It will take lots of investment to even reach the competition level. Previously it was easier but with time, everyone started joining the group and now it's almost impossible to mine..Faucets are a fun way to make some bucks, though it will take you a lot of time and <truncated> is a good way, if you have some money get some BTC and look for the best investment offers, read through the forum, there are many threads where people have given their reviews about investment in BTC.Good luck on your journey!

### Reply 13:
I Suggest you to leave the idea of mining because Now a Days Mining is not Profitable because many people have developed mines and It also worth your money. Also Now the Halving Reward is Halved so U don't get much Bitcoins and it doesn't cover up your expenses....

### Reply 14:
OP - Forget about mining. Its not worth anymore and plus its an big investment. Instead learn about how btc could be used in future and various business being build with bitcoin, what are they and how useful it could be in future. Try to invest in such business instead of m<rest of thread truncated>
","[
  {
    ""hardware_name"": ""cpu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gpu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chips made specifically for bitcoin mining"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  }
]"
9444,"Date: 2015-10
Topic: s5 not hashing full?
### Original post:
`So i connected my s5 latest batch wiith extra fin fans on the board.The second board is showing <truncated> have tested them indiviuadully, and they both work, its the right side that is not getting up.some times it show <truncated> be the controller ? i tought the cables but tested both on the sides and working..

### Reply 1:
What size psu are you running? Many issues are addressed with insufficient power.

### Reply 2:
Currenlty on a server psu, dsp 2000 bb, first time i have tried this psu on antminer, was thinking that it might be the problem.i dont hhave any other psu, a old bronze 620 psu that cant run it either.

### Reply 3:
when i run like 10 mins the other asic comes up, and stops hashing.Was running on a rm1000 whit no problem. i have not been able to get it full working whit this psu

### Reply 4:
clock the s-5 to freq 300 if it comes back up and all asics run your psu may be at fault.I have heard of that psu doing wrong on an s-7it could be it has an issue.are you plugging in all four jacks?

### Reply 5:
ah okey.Yeah i am going all the jacks, even 2x only,i guess its the psu, what i know it dont perfrom so good under 50% load and 1c s5 dont do 50% load.atm pluggin whit a s3 to load some the psu

### Reply 6:
Your S5 (hashboards) is dying. I have several of them at the same condition as yours. Underclock may help.

### Reply 7:
I have one S5 that is guaranteed to give me:oooo first line all the way acrosssecond line xxoooooooLower clock and soft boot corrects it on reboot sometimes.Hard boot almost always corrects it.Either correction, lasts 5 mins to a couple of hoursA severe underclock will correct it for the longest time, hours, maybe more depending on how low.Checked connectionsI have not swapped any parts yet.My money is on the second / right hash board, but I understand it could be the controller or cable.Simple, good information provided by Bitmain at their zendesk site:<link> people may find it useful to pull these down locally and grab one when needed. It never hurts to remind experienced brains. A side note: Bitmain has a quick video giving the steps to address these types of issues quickly. Props for doing so to Bitmain.I want to make sure I show I have affection for Bitmain's good points as well. I hope to always discuss the good and bad regarding the choices of miners.**--If you find incorrect information in the videos which you think are serious enough to require discussion please post me a PM about them and maybe we can make a new thread somewhere. I have not vetted every inch of material b<rest of post truncated>

","[
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    ""hardware_name"": ""s5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""server psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""dsp 2000 bb"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bronze 620 psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rm1000"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s-7"",
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  },
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    ""hardware_name"": ""s3"",
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9015,"Date: 2015-03
Topic: Buying Monarch from BFL
### Original post:
Hi,I want to get the monarch cards and I hoop you guys can help me out with this questions.The product page doenst provide enough info and there is almost no youtube videosI have read alot about angry custumers.... but it the companey still a *&*&^% or do they send the orders now?<link> what is the watt usage of the 700-725-750 version? it says 0.65-0.85 but I want some reall life wall usage.2) It says in stock, is it really? does any one purchase recently and got it send in 2 days? I dont need to tell what dramas you can find on the internet about BFL3) How is the water get circulated? Is the pomp and the fan a all in one UNIT? because I want to run alot of this card and want to connect them al to a different central pomp/radioator etc... as I am using them in a very very very dusty environment.4) I am going to use the USB port. Can I connect let say 20 Units to a single pc using powered USB hub?5) I see on the pic from the product page that the other side have also a heatsink, I want to have everything water colled. Is it easy to replace that heatsink also? Is it a standard CPU format? I can find any good pictures or youtube videos to know what exactly are they going to send if y<rest of post truncated>

### Reply 1:
Take a look at the AntMiner C1. It's got a similar efficiency as the Monarch, is built for watercooling on a main external loop, is probably a lot easier to set up, is probably a lot easier to work with, is probably more reliable in general, is probably a lot cheaper to buy new, and isn't being sold by professional Right Bastards.But it networks directly so you'd need a big switch instead of a big USB hub and there wouldn't really be single-point control without a fair bit of finagling. Don't know if that's really a drawback or not.<link> know that doesn't really answer any of your questions. But the best answer to anyone saying ""I want to buy this thing from BFL"" is ""you should really do something else, because that's one of the worst decisions you can make with regard to acquiring mining hardware"". Their Monarchs are overpriced and unreliable, and though they may be selling new orders from stock I bet there's still people with preorders 15 months old that haven't been delivered yet. BFL really seems to not care at all about servicing customers properly.

### Reply 2:
I don't know why you'd want something from BFL, but if you're dead set on getting Monarchs buy them here: <link>

### Reply 3:
From the looks of it it has a all in one water cooler so if you wanted to connect them all to a central one you would need to find a waterblock that fit it and use that as the one it comes with can not be disassembled. I have had one of the same ones on my computer and I wanted to expand it but then found out that I needed to build a custom one to do that.

### Reply 4:
No no just NO.Seriously. You are not getting value for money

### Reply 5:
Stay away from BFL products. They are too expensive, use too much electricity, are too slow, are prone to failure and leaking, and are from a company that will likely not be in business to support the product in a few months. You'll just be wasting your money like so many people before you.

### Reply 6:
You seem to be new around here, so here it goes: <link> just don't buy from BFL, ever. Whatever their product is... You risk getting nothing, and you're not buying that much anyways.

### Reply 7:
Look at some of the other current tech SP20, S5, Avalon 4.1 etc.You can run with a underclock if you want quiet. But I would personally never order from BFL.

### Reply 8:
SP20s you'll need to get 2nd hand from other forum users, you'll find listings here: <link> you can get from ehash.comS5s from bitmaintech.com

### Reply 9:
Why... In God's name: why?!?Why would anyone in his right mind want anything to do with BFL...

### Reply 10:
how are those avalon 4s miners?

### Reply 11:
Guys chances are 66.6% that the op is a BFL shill.BFL has been sending me emails to buy a monarch for the last 2 weeks.To op if you are real send me a pm and I will sell you a sp20e and a psu to boot for a good price. If you are a shill for BFL I hope you get rectal, penile and testicular cancer over the next 6 months.Ps that is how bad BFL truly is.

### Reply 12:
I own 3 of them here is a screen shot of them mining as I type. Well built about .56 watts a gh see screen shot below. 1 problem they are costly.1400 watts at a kwatt meter does the 3 of them. I have an evga 1600 p2 running them

### Reply 13:
[/quote]I own 3 of them here is a screen shot of them mining as I type. Well built about .56 watts a gh see screen shot below. 1 problem they are costly.1400 watts at a kwatt meter does the 3 of them. I have an evga 1600 p2 running them[/quote]im going to look into them a little more soon. thanks for the screenshot.

### Reply 14:
Yeah it's too bad there's no Avalon US reseller. The prices aren't terrible but the overseas shipping <rest of thread truncated>
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23624,"Date: 2021-07
Topic: MINING WITHOUT INTERNET CONNECTION - WHY ?
### Original post:
Hi,I have an antminer S9 SE ,I put an amp meter at the input: displayed value about 6Amps under 230Vac, then I disconnected the ethernet cable and the miner remains mining with the same consumption few minutes after that ... Can someone tell me why the miner continues consuming power without connection to the pool ?? what the miner is calculating in this case ??Thanks

### Reply 1:
That's normal it won't stop mining until the internet connection is back.I think you can use some 3rd party tools like Awesomeminer to turn the miner into idle mode when there is no internet connection but it won't turn the miner off if that is the thing you want.

### Reply 2:
thanks

### Reply 3:
Not sure if this is done intentionally by Bitmain or just by chance, most custom firmware will stop the electricity flow in the chips when there is no connection to the pool because it does save power, which makes sense right? no mining going on, the miner shouldn't be consuming that much energy, however, the custom firmware in that aspect could be worse, first, you don't want your miner to get too hot, then too cold and then too hot in case your connection is going through a rough time.The second point is that if the weather is wet, and your miner isn't generating any heat, yet, the fans are still spinning, water will condense around the miner and it will be KaBOOM, so there isn't really a right or wrong way, both firmware custom and stock should give you an option as to what should happen when your miner isn't connected to the pool, and then depending on everybody's needs, they can choose what works for them.

","[
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20731,"Date: 2015-11
Topic: BFGminer high cpu usage.
### Original post:
Anyone had any problems with BFGminer and high cpu usage in Windows 7 X64. I am only using monarchs. Seems like the more cards I add, the higher theusage. The system has a modern Intel cpu and is dedicated to coin mining, 16 monarchs connected using Bfgminer 5.3.0.Thanks!

### Reply 1:
check to see what else is running.use system monitor.once in a while i would do a restart and i would end up having two bfgMiners running this was casuing too much cpu.so check to see that.

### Reply 2:
Thanks for the suggestions.check to see what else is running. Done this. use system monitor. Done this. Just BFGminer using cpu cycles.once in a while i would do a restart and i would end up having two bfgMiners running this was casuing too much cpu. so check to see that. Not this either, but have encountered this in the past.The problem does seem to ""scale"" with the number of units I have connected. One or two units is no problem. Now with 16 units cpu usage hovers around 60%.BFGminer also shows this behavior on my beaglebone black running Minera.Even tried CGminer. All of the units show up and hash but at about 25% of their normal rate. This seems to be a bug in firmware 1.4.5. My other unitswith older firmware don't do this. They have 1.4.2 and 1.4.3 and work great with CGminer. This behavior also is present on the beaglebone.I seem to remember an issue like this when I had about 100 block erupters and tried to use BFGminer. Hmm.Just to recap on my situation:-This is a ""dedicated to coin mining"" computer. No <truncated> programs running/or even updates. Has a modern CPU/motherboard.-I also have a beaglebone running Minera 0.6.1 and when I connect all of the monarchs to it and ru<rest of post truncated>

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    ""hardware_name"": ""CGminer"",
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9388,"Date: 2015-10
Topic: Dragon Miner A1 module hashing at unusual amounts
### Original post:
To make a long story short, I've got this Dragon Miner A1. One of the modules says it hashes at 750gh, but in reality it just isn't working. So, I did some research and found out that one of the VRM chips is probably bad (If my theory is wrong please correct me) and needs replacing. So the module apart today and discovered 2 VRM chips, one is a 1.8V and the other is a 3.3V. They have writing on them and I searched it up and found some, but the last string of numbers is different on all of them. Does the last string of numbers matter? I am also not currently sure of the amperage on the original chips. So if anyone knows that info please share that with me.The 1.8V one is as follows: AMS1117 1.8V H418KEThe 3.3V one is as follows: AMS1117 3.3V H421PEIf the last set of numbers matters could someone tell me what they mean? Thanks, dako44

### Reply 1:
You'd probably get more help on Mining Hardware or perhaps on this thread. This sub-forum is for tech support related to Bitcoin, the blockchain and Core

### Reply 2:
here is the datasheet of the LDO chips:<link> didn't check the pinout, but it's very likely that they are compatible with ncp1117, ncv1117, and many other ""1117"" LDOs, all outputting 1A.But first, you'll need to check if the Vout is out of specs.Center pin is the vout.Most of the time, you can use almost any screw from the heatsink as a ground reference (or simply use pin 1 of the LDO).I'm not too familiar with the dragon units, but I'm not sure the LDOs are at fault, maybe just the asics that went bad.from what I remember (but I may be wrong), the I/O are all chained together. I don't know what will happen if one chip in the chain fails.

### Reply 3:
So to clarify, test the chips to make sure they are outputting 1.8 and 3.3 volts respectively, then go from there.And it shouldn't matter on the model as long as it is 1.8V and 1A or 3.3V and 1A?

### Reply 4:
you need to check pinout of the part you plan to buy:pin1 = <truncated> NCV1117, LD1117A, LT1117 are compatible if yours are sot223 packagebut first, check voltage output

### Reply 5:
Alrighty! Thanks for the help.

### Reply 6:
UPDATE: Tested the LDOs, they were outputting the right amount of voltage on both of them. Is one of the ASIC chips bad then?

### Reply 7:
They no longer make the A1. You will be stuck to second hand channels most likely. So you can check here on the forum for a 1t module. Most likely that module with the high hashing will not be the same it's chances are a dud at this point. You might give Mr. Lee a pm and see if he has any - <link> . It's been a long time but at one point he hosted a lot of A1's. Dont know if he still has some parts or not but hes your best chance of a ""big"" seller having any. If he does not hit the hardware board. But in all honesty chances are shipping and what you get charged on module will cost more then it will mine. Do some ROI math but you might be better off just running 3 modules.

### Reply 8:
I might pm him but yeah at this point I'm kinda tired of messing with it. I may just run it with 3. Thanks for the help though.

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22284,"Date: 2018-01
Topic: New to me Antiminer S7 Starts mining then stops
### Original post:
Greetings and Thanks for reading:I bought a used Antminer S7 primarily to learn about mining. I understand that it is unlikley to prove profitable. I plugged it in and connected to network. All seems fine and it shows up when I login via IP address and for a good 20 minutes seems to hash fine. Then the flashing green light stops (no red light appears) and the miner is no longer discoverable in the IP Address search of my network.Any advice on what I should be checking?Thanks again!

### Reply 1:
At the current price of BTC (11.5K usd) you should be able to generate around $100 usd per month with an S7 model (assuming your electrical is somewhere near 0.10 kwh). Hopefully you get your money back and start making a profit at some point I would try and make sure your unit is clean. On one occasion I had a similar problem and I took the fans off and outer case off so I could get at the hashing boards. I used compressed air to blow the dust out of everything. There are lots of utube videos on how to clean an S7.Even just going through the process of plugging and unplugging the hashing board cables that go to the controller board might help.Another thing you could try would be to use a different power supply, however, most people don't have spare ones available. It doesn't sound like an Internet problem as you're not able to see the IP when the problem begins.

### Reply 2:
What PSU are you using?

### Reply 3:
There are 3 possible problem of your antminer s7 this is just my own guess.1. Hashing board is too hot that is why its stop 2. Maybe your PSU is not giving enough power and your miner stop hashing. 3. Your hashing board is shorted For solution or troubleshoot about this problem you can find it in bitmain support here <link>

### Reply 4:
If the miner is not connectable the controller is crashing. Overheating, overclocks, all that will stop it from hashing but you would still have full GUI access. I am gonna say its either a bad controller or a bad power supply.

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10781,"Date: 2018-11
Topic: 17.2TH/s, 1570W Innosilicon announces the most powerful and efficient BTC Miner
### Original post:
Is it same chip as the Halong T1 correct?Will -ck provide firmware to this gear?Does it only mine BTC?Is it limited to 5 pools?I would love to demo one for you if you answer my 4 questions. AboveI don't mind being limited to the 5 pools above as long as I know this before I buy it.

### Reply 1:
The original T2 thread is listed here:<link> do you have an explanation for CK not supporting your hardware, and your current relationship with Halong?

### Reply 2:
So from experience the specs are something more along these lines:17.2 - 6% = 16.17TH1570w + 6% = 1664wIn all fairness, if they can operate at 50c external temps they have a place in the market because nothing else does.

### Reply 3:
Hmm........should I buy a lot of this to test out? Inno being Inno and all

### Reply 4:
If you have a choice, which half refund from order of Innosilicon or miner, I will now always choose a refund.You will get more money back, than with miner from Innosilicon.My recommendation is, not buy and stay far away from this company.

### Reply 5:
It means to me that Inno needs to make it clear that it only works with pools that supports AB.Until the majority of pools support AB failure to mention that is false advertising by omission because people will naturally assume that it works with all pools - and for all sha256-d coins - as historically all miners have. This miner and the T1 do not.As I've said about Halong and their T1, if Inno wants all pools to support AB then they need to get some of these in the hands of the pool operators so they can test the changes on their pool using Testnet to verify how it behaves with their setup. Only a fool would make live changes to what is essentially financial software without testing on their pool hardware/software setup first.

### Reply 6:
Missing one key piece of information: How much?

### Reply 7:
@ -ck thank you for replyprice does matter would like to know.I would not buy this without proper firmware support.My t1's are fine at low and medium speed.If I can not set this gear to 3 speeds I do not want it.

### Reply 8:
I won't be having a Innosilicon T2 for review, bought or for free,their business policy is bad for the community and I also have bad personal experience with them..

### Reply 9:
17.2TH/s, 1570W at the wall, Innosilicon announces today the world most powerful and efficient BTC <truncated> Terminator 2 (T2) Miner ready for mass <truncated> the worldwide leader of crypto currency mining ASIC manufacturer, unveiled the 10nm innovative SHA256 miner, the Terminator 2 miner, which is a leap forward in the current hot contested BTC mining market. This new product again showcase the Innosilicon's engineering capacity to deliver the most advanced mining ASIC miners <truncated> Terminator 2 (T2) Miner is the next generation BTC mining product that adopts the state-of-the-art semiconductor technology with the innovative dynamic frequency scaling architecture for added efficiency and reliability. The typical hash rate reaches over 17.2TH/S per miner, and power consumption can go as low as 85W/TH at the wall in the high efficiency mode. Innosilicon T2 miners will generate considerable better ROI, cost much less to operate over competition, and will be the last one standing as today's mining difficulty increases sharply. T2 is likely to operate with profit and good re-sell values when other miners become obsolete in the sharp difficulty rise. Own T2, worry free.<link> <l<rest of post truncated>

### Reply 10:
$1600/unit and MOQ 100

### Reply 11:
My moderation standards have not changed in many years as moderator here but I'm not the only moderator. As for this mining hardware, specifically I'm contracted by MyRig for the driver to the HalongMiner T1 and have nothing to do with Innosilicon directly.

### Reply 12:
S9s and avalons are selling cheap these days. They need to compete strongly on price too, or it wont make sense to purchase.

### Reply 13:
yea...was talking with Gordon at Consensus this week and he was saying all their driver work is done by luke.

### Reply 14:
This is so important for the miner besides performance. Bitmains still capable of lowering their S9 price if the Innosilicon comes close to it in price or performance to stay competitive. This will have to be near the price of an S9 to have decent sales at all.We already know the price in bulk ($1600/100 MOQ), but resellers will definitely markup the price. The question is how much it will cost for us and what Bitmain will do in response- theyll probably lower the price of the S9 further as aforementioned (S9i 14TH/S is currently at $1050 with PSU).

### Reply 15:
Huh? At current 1600 price, S9 is already far more competitive, especially with coupons. Getting 80% more hashrate is alot better than 10% more efficiency.Go ahead and crunch your numbers.

### Reply 16:
Innosilicon hasn't been too <rest of thread truncated>
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23443,"Date: 2021-02
Topic: Weird T17 Fan
### Original post:
I have one fan that won't spin up over 1800 rpm.On 100% I get fan1 = 5860fan 2 = 5840fan 3 = 1800fan 4 = 5880I switched the fan for a new one, still 1800. I swapped the leads at the control board for fan 2 and fan 3 and now fan 2 is 1800. Seems like where the fan plugs into the control board maybe be wonky. Anyone else ever see this? I checked using a piece of paper and the one fan does seem to ""suck"" less.

### Reply 1:
I had this problem before"" like a long time ago"", unfortunately, ""3 boots"" didn't fix it, I sadly had to install the custom firmware and disabled fan check, in my case, however, the fan was spinning just fine but the reading was bad.What you could try:1- A hard reset and different stock firmware.2- Custom firmware.3- A new control board.The third one will sure fix it, but not sure if it's worth it.

### Reply 2:
I had this bug with some of my bitmain l3+I booted three times in a row.It went away. I have seen weird fan action on s9s the fans ramp up ramp down. wont go fast.yet test on other controllers they work.I think the three software boots in a row clears shit from the cache.

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8917,"Date: 2015-03
Topic: Mining Asics Technologies Question?
### Original post:
Has anyone from here ever bought any of Mining Asics Technologies previous miners? How well do they run and how do you think they'll compare to the excaliber 5? I'm looking to buy some scrypt hash and so I figured i may aswell ask here first.Ahmed

### Reply 1:
Jimmothy.Good links for sure...However may i refer you here. <link> is well after the FPGA prototype had been finished. Which means that alcheminer white labeled the MAT gear. This is a VERY VERY common practice in tech period.<link> all know that is a zues miner right?Another thing to keep in mind. Other companies do tape outs... Let me give you an example...Remember this thing? <link> was done by a company called Innosilicon. I have visited Innosilicon in china personally. And the owners are now good friends of mine. However, Innosilicon also made their own chip... called the A1. In fact it is the same chip. Also, they made something called a2. Which is a beast mode scrypt miner. But regardless who cares. So my question to you is how does this matter in anyway? Regardless on who made the chipset. I am looking at this purely from an objective standpoint. Does it matter who is using whose stuff? I mean if innosilicon would give me free chips and let me laser over it and put my face on it i would. Because let's be honest... a chip with my face on it would be BITCHIN!... lol

### Reply 2:
It really does matter because both companies are claiming to have <truncated> the hardware.As I'm sure you know, it takes millions of dollars to design and manufacture 28nm hardware (alcheminer says $4million). You can't just pretend to have that much skin in the game and take preorders based on the illusion that you need it for NRE/production costs.The coincraft case is special because Bitmine did actually commission innosilicon to make their chip, they just didn't have an exclusivity agreement which screwed them over.Companies are free to rebrand/resell hardware as long as they are honest about it.From the looks of it, MAT charged/is still charging way more than what alcheminer is charging so they could basically just dropship the hardware for a massive profit.

### Reply 3:
Sorry ""bud"" but the more you type, the more you really come across as not having a clue. All you are doing is spouting off bits and pieces of non-technical hearsay you have picked up listening to others.If you are so buddy buddy with Innosilicon you would know that they were contracted to make the A1 for Bitmine and had a non-compete agreement for a specific amount of time. Unfortunately Bitmine were so monumentally incompetent and building a working miner around the chip (I mean months!) that the clock ran out on the non-compete agreement and Innosilicon were free to sell their own and to OEMs. Go check the Bitmine thread if you want to see a bunch of unhappy customers.It matters because MAT set themselves up to be making their own chips, priced their products accordingly, set an unrealistic, aggressive schedule knowing full well they wouldn't be able to keep it, then tried to resell someone elses products as their own.MAT is no better than AMT in my books. Just a reseller of other peoples tech who took loads of overpriced pre-orders and didn't deliver citing production issues for a non-existent production line. Horrendous communications with customers, shill accounts, lies and de<rest of post truncated>

### Reply 4:
Excalibur 4 250Mh/s cost 7.499 on July 08,2014. MAT ship on November 2014 a Miner of cost 3.099 !!! (A 4.400 USD Dif.). Probably MAT buys rebranded Alchemist at 3.099-20%=2.479USD (which had already sold) and sent to customers (if indeed sent them)!!!

### Reply 5:
The Alcheminer-Mining Asics Technolgies Hardware Game in greater detail: MAT agreed with alcheminer to a joint production venture with the figure something around 2M $ for the development. It was a shared deal 50% - 50%. But MAT does not have any rights to the IP (asic chip design). The 2M$ included 50K Asic Chips with own MAT Logo - that's why the alcheminer chip and MAT chip are identical. The chip is the same as the Alcheminer Chip! With 50K Chips you can make 195 miners, each with 256 asics inside, but of course still there are additional costs for the whole miner manufacturing, case, boards, software, controller board... of about over 800$ each.But now the latest news: MAT doesn't even have the 2M$, so MAT received around the end of September only 10K chips. Nothing more - because all money from preorders was invested only in the development of the asics, not in the miners itself.Now after the GAW miner deal, MAT had some money to pay for the last 40K asics and to the manufacturer of the miners. Thats why MAT still doesn't have miners... because MAT shipped all miners to GAW (Marshall Long of FinalHash as commission for the GAW deal), another cloudmining company, and 3 or 4 cu<rest of post truncated>

### Reply 6:
Original post from Renton <rest of thread truncated>
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    ""hardware_name"": ""Mining Asics Technologies previous miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""excaliber 5"",
    ""hardware_name"": false
  },
  {
    ""hardware_name"": ""FPGA prototype"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""zues miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon A1 chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon A2 chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""28nm hardware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Excalibur 4 250Mh/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Alchemist"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Asic Chips with MAT Logo"",
    ""hardware_is_owned"": false
  }
]"
17325,"Date: 2012-12
Topic: 24/7 mining. Best method. Proportional/pps/pplns and any other.
### Original post:
With my future jally. What method should use? At the moment I'm pps with bt cguild. They also offer a pplns.Is there a better paying pool?

### Reply 1:
Yeah, one with zero fees. P2P or bitminter.

### Reply 2:
DGM at EMC is pretty good. They also offer dwolla payouts.

### Reply 3:
Whats best like method, So pplns or pps or proportional

### Reply 4:
The only payout method that I would avoid is Prop, as it can be hopped. PPLNS and DGM were both designed to counter hopping, are both good, and will give you about the same. PPS is always a fallback option, and will give you the least variance.

### Reply 5:
Bitminter is good

### Reply 6:
If you are considering Bitminter, I'd say that it's a solid choice. DrHaribo is a great pool operator. Answers any questions, and he is patient.

### Reply 7:
It looks good! Transaction fees shared!How does pay work. Is it better then pps.

","[
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    ""hardware_name"": ""jally"",
    ""hardware_is_owned"": false
  }
]"
21694,"Date: 2017-10
Topic: s3 firstboot will not work in debug
### Original post:
my s3 has been bricked with solid red and green led I'm trying to do the firstboot command in the debug console but I get the following after I type y and enterjffs2reset: This will erase all settings and remove any installed packages. Are you sure? [N/y]yjffs2reset: no rootfs_data was foundany help would be great thanks

","[
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    ""hardware_name"": ""s3"",
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  }
]"
16243,"Date: 2022-04
Topic: Sales Tax on Hashrate / Timeshare Selling
### Original post:
I would like to offer the ability for customers to purchase hashrate or a block of hashes and I'm wondering if there is a way to offer this WITHOUT incurring sales tax... is this possible?

### Reply 1:
I don't think services are taxable in most U.S. states. You're probably providing a service, not a good. If not, then try structuring your business so it's obviously a service.Think of it like a cloud hosting provider. I've never paid sales tax on VPS hosting even from providers based in the U.S., even though both parties live in states with a sales tax.Worst case, tell your customers to provide reseller certificates so that they pay the tax 12-15 months later instead of today. Hopefully they'll make a return on the extra 5-10% of hashrate they can buy, you get 5-10% more revenue, and the sales tax owed is diluted 10% by <truncated> my business model will not be to sell hashrate or mining contracts. I would set up a new corporation for the customer so the full tax benefits of depreciation pass through to them. The customer would be a non-voting 100% owner of that corp. My parent company would charge the mini-corp a fixed $/kWh rent rate or something + a setup fee. Whatever profit is left is paid out to them as a distribution every month or so. Still need to talk to a lawyer to make sure this is a sound idea.This also gives them a powerful incentive to re-invest that distribution in<rest of post truncated>

### Reply 2:
<link> is this sub-corporation issuing securities?

### Reply 3:
Oh, I didn't know Texas is one of the states that taxes cloud hosting.But I don't think this applies to your situation, since the guidance states that ""Settling of electronic payment transactions by certain entities"" are not taxable. I couldn't find anything specifically declaring that crypto mining services are taxable, so you could default to not levying tax as long as your accountant agrees.There's probably a way you could make it work, such as taking wallet addresses from customers and having the pool mine directly to their wallet. I don't think so, since it would be an S-corporation or LLC with just one shareholder, and the shares are not being publicly sold. The sub-corp wouldn't even have to issue more shares for more investment. The customer could simply write a check to the sub-corp, which I'll then use to buy more equipment. No stock or securities transactions involved here since they already own 100%.But like I said, I'll talk to an attorney. I don't care what the structure is, as long as the customer can take the depreciation (since I have no use for it) and the parent corp is the exclusive hosting provider.

### Reply 4:
Texas taxes everything. But also keep in mind, if you sell to people in other states you may or may not have to collect sales tax for those states and pay them.There are services that are out there that will do as little as sell you lists of locations and rates to others that will integrate with your billing & CRM software and add the appropriate tax to the invoices and then send it to the proper agencies at of the states. It just depends on how much you want to pay for what features.-Dave

### Reply 5:
It's usually worth paying for these accounting platforms, such as Bitwave. I would write a few lines of code to integrate Bitwave with the CRM/ticketing system, Minerstat, mining pool sites, the exchange, and the wallet API for payouts. Not to mention the ERCOT API with Hiveon / BraiinsOS / nvidia-smi for power management.

### Reply 6:
If you sell to someone in many states you have to collect that state & county sales tax, based on their county and remit it to the state.In a lot of locations SAAS is taxable. Hunt around pick an online storage service, not backup just storing data and start entering different locations and see how many charge sales tax. I am not an accountant / tax person / tax lawyer, DYOR and do what you feel comfortable with. -Dave

","[
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    ""hardware_name"": ""VPS hosting"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Minerstat"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""nvidia-smi"",
    ""hardware_is_owned"": false
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]"
9666,"Date: 2016-01
Topic: Best place for heavy duty PCI-e connectors?
### Original post:
Anyone have any suggestions for some high quality pci connectors for my new s7 that's coming?

### Reply 1:
two places one hereon the forums <link> the other if you live in the US i get all my miner supply's here <link> sure others have good suggestions, id say try ebay but it takes long to get there or costs to much for fast shipping even with deals.

","[
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    ""hardware_name"": ""pci connectors"",
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    ""hardware_name"": ""s7"",
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16781,"Date: 2011-07
Topic: [ERROR] Pushpoold ""unkown-work""
### Original post:
Thanks for the hint .I'm now testing, with and without the patch suggested by redditorrex.so far it's not looking that good :/.edit: it got a little bit better.

### Reply 1:
did you upgrade to newest pushpoold 0.5.1 and newest bitcoind and restart them both after editing the server.json file ?

### Reply 2:
yes I did, this is frustrating. I have no clue where this comes from.

### Reply 3:
can you post your server.josn file (edit the passwords and usernames out tho)

### Reply 4:
here is the config:Code:{ ""listen"" : [ { ""port"" : 8342 }, { ""port"" : 8332, ""protocol"" : ""<link> }, { ""port"" : 8335, ""protocol"" : ""<link> ""proxy"" : ""XXX.XXX.XXX.XXX"" }, { ""host"" : ""127.0.0.1"", ""port"" : 8338, ""protocol"" : ""binary"" } ], ""database"" : { ""engine"" : ""mysql"", ""host"" : ""localhost"", ""port"" : 3306, ""name"" : ""XXXXXXXX"", ""username"" : ""XXXXXXXXXXXXXX"", ""password"" : <truncated> ""sharelog"" : true, ""stmt.pwdb"":""SELECT password FROM pool_worker WHERE username = <truncated> INTO shares (rem_host, username, our_result, upstream_result, reason, solution) VALUES (?, ?, ?, ?, ?, ?)"" }, ""memcached"" : { ""servers"" : [ { ""host"" : ""127.0.0.1"", ""port"" : 11211 } ] }, ""pid"" : <truncated> ""forcehost"" : <truncated> ""log.requests"" : <truncated> ""log.shares"" : <truncated> ""longpoll.disable"" : false, <truncated> : 75, ""rpc.url"" : ""<link> ""rpc.user"" : <truncated> ""rpc.pass"" : ""XXXXXXXXXXXXXX"", <truncated> : true, <truncated> : true}and thx for your help

### Reply 5:
pushpool keeps a log of the last 120 seconds' worth of work received from <truncated> error occurs when a miner submits work that is not in that log.

### Reply 6:
Is this the <truncated> : 75, option?And if not how do I get pushpool do keep it longer, or is the problem somewhere else on the host?

### Reply 7:
Try adding this to your server.json config Code: # disable X-Rollntime support <truncated> : trueDont forget to add an extra comma at the end of the config option above it if you put this at the end of your config.

### Reply 8:
I dont think so... i think this option is how long it caches the authentication credentials (login/pass) for the worker but could be horribly wrong Havent looked at that part of the code yet. check config.c in the src and that should give you a clue. maybe also check that your system time is correct and you not drifting crazily? i dunno... im outta ideas for ya man.... that option i mentioned solved my issue (started when someone joined the pool with 30 GH/s)

### Reply 9:
you're right.but the problem is very strange.i figured out it has to be something wrong with the log.i've received work and submitted within 120seconds.where does pushpool log this, in memcached?

### Reply 10:
No.The problem is with miners submitting old work. They should not submit work older than 60 seconds, much less 120 seconds.

### Reply 11:
increasing the askrate of the miner would help against this?but why do I have no troubles on other pools?

### Reply 12:
I've tried increasing the askrate and it helps a litte bit.their are still 50% unknown-works, how can i check that pushpool logs everything right?

### Reply 13:
the problem is still present.i pledge 50$ for a solution. I'd pay via paypal since I have not much BTC.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitcoind"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""server"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""mysql"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""memcached"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""miner"",
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]"
15786,"Date: 2016-07
Topic: How I Spent my Sunday - Building Racking
### Original post:
Got my second and third S7's yesterday had to figure out where to put them. So I spent my Sunday building this in my Gym Room - the beginnings of a MicroFarmLots of work still to be done on neatening up cabling ------> next Sunday Hmmmm how do I embed the image? <link>

### Reply 1:
Turn miner 180 so they blow @ you For the pics there is an picture button...else bbcode <truncated>

### Reply 2:
I tried to be neat with my S1 units then the s3 didn't fit the s1 spaces and it caused nothing but a headache. When your all done the replacement for the s7 will be out and you will get to start all over. I gave up being neat just toss them where ever they fit and get enough air.

### Reply 3:
What's the ambient temperature there? I see behind PSU's it's a window so it would be best to open it and let the air flow in the room for better circulation and cooling (in case your only cooling system is only the electric fan and miners own fan) but if ever you have a cold room due to aircon then not needed so it will have less dust over time. Most home gyms owners don't put aircon on their gym rooms and if your one of them then longevity of those S7's will shorten without proper cooling.Regarding embedding of the image you posted, you can't since your still a Newbie rank but since Minerkev posted a wrong code, because it isn't just the IMG tag but also something else to the first and last of the link itself, here's the proper code for it:Code:[img]<link>

### Reply 4:
They going to be alright all running from one socket?

### Reply 5:
House burning in 3, 2, 1...

### Reply 6:
Yeah man, maybe split them in 2-1 configuration per socketTried 3 miners on 1 socket, wasn't really safe , it was hot af

### Reply 7:
Thanks for the Comments --So what you can't really see from the pictures ::1) There is a window directly behind them, which is open - so Hot Air is expelled directly out the window -- with all three running all night at 700mhz the average blade Temp was around 59 and all day today 64 (with the doors closed) if I leave the door open this will probably improve2) Whilst It looks like They are all running off one socket - One of the really untidy cables hanging from the roof is where I have pulled an extension from another socket, so I have two running off one socket ,, and another off another socket - each with its own surge protector It's 240v 16A plug All runs great -- except today when our domestic worker plugged in the Iron, in another room and that plug point happened to be on the same circuit as the two miners -- so it tripped the breaker --- Solution - She must pick another room to iron in One day when I want to get more miners I'll have to look at pulling another circuit from the db board --

### Reply 8:
as soon as I got my mini farm all perfect it stopped being profitable lol...Hopefully your farm lasts longer than mine

### Reply 9:
Nice set up. Personally I'm glad you shelves are not made from wood and that they are not solid but like grate which is good for cooling. I agree with comments about all running from one socket though. So maybe you should do something about it.

### Reply 10:
Hi, are you running your s7 with 220v or 110v PSU? Regards.

### Reply 11:
Hi, it's 240v

### Reply 12:
I have one of those fan's your using (I believe it's lasko if I remember right). I used it before I went bigger drum fan's. But you picked a good fan. I really like fan's using old knobs you adjust speed. A lot of the new ones with electric buttons if power is lost turn off and stay off till turned on. But with good old knob if power is off and comes back on they come back on.

### Reply 13:
This one is a Kenwood,, the brand is pretty popular in South Africa,, and I think UK,, I have a whole bunch of them - they come in handy Lucky we are just going into winter now, I will have to look into AC and pulling more circuits through from the dB when we get to summer if I want to add miners

### Reply 14:
What is that supposed to mean?

### Reply 15:
i checked the specification its take Power Consumption: 1293W 10% and you have 3 s7 ? is it ur house can take that much electric ? and how you pay your house electric bill dude ??

### Reply 16:
I think it will be better for the hot air to be drawn out of the room directly, rather than relying on natural air flow.Normal UK plug has a max current of 13A. Therefore the max is 13 x 240 = 3120 W. You are drawing 3 x 1200 + fan (assumed 100W) =~ 4000W = dangerous of burning wire in the long run. Hope we still remember the fire incident in Thailand:<link>

### Reply 17:
Clean and neat setup you have there.It would be interesting to see other South African mini farms.Now time will tell what the cost is to run those little monsters.

### Reply 18:
minimum for every apartment is 3kw, so 1300w is nothing you can even go higher, if your wachine machine is a class efficientmine for example is not, it consume 2400w as a <rest of thread truncated>
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    ""hardware_name"": ""S1 units"",
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    ""hardware_name"": ""s3"",
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""electric fan"",
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    ""hardware_name"": ""miners own fan"",
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  },
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    ""hardware_name"": ""surge protector"",
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    ""hardware_name"": ""shelves"",
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    ""hardware_name"": ""220v PSU"",
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  },
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    ""hardware_name"": ""110v PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""240v PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""drum fan"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""AC"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""wachine machine"",
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3984,"Date: 2018-01
Topic: [CANADA - SIDEHACK] 20-120GH stick; 700GH pod; 4TH S1/3/5 upgrade kit
### Original post:
As dori sa cumpar un ""Pod"" te rog Please put me down for a Pod!OOps I meant to say: Je voudrais acheter un ""Pod"" s'il vous plait! (official language of Canada and all)

### Reply 1:
Good but just to confirm, you are in Canada ?

### Reply 2:
Sign me up for one stick one pod interest as well please I am in Sask, and damn its cold here, its like winter forgot it was supposed to be here already...

### Reply 3:
Added

### Reply 4:
My first interest is for the S3/S5 upgrade board, 2xBut POD is likely to go out first, 2x

### Reply 5:
Added

### Reply 6:
2 or 3 pods for me, i'll be in southern Ontario next month.Maybe more/other stuff depending on prices.

### Reply 7:
I think that these items are in the future, part 2, but FIRST he/sidehack would need to sell 2chip compac (non-BF) and a pod to raise money.This would be the future, part 1, as far as I understand it.

### Reply 8:
Added but like Biodom said, this is futur project. If you want stick or pod with Bitmain chips go check the thread.

### Reply 9:
You doing a group buy for them? the sticks don't appeal to me.. solo mining meh. Really hoping/waiting on these and the new pods.

### Reply 10:
From my understanding from this post from Sidehack.<link> first batches to come out are the BM1384 chips.

### Reply 11:
I have successfully tested both hardware and software for the 2-chip BM1384 stick. I will be testing what should be the final prototype as soon as PCBs arrive, and the first of the mass-production batch should be rolling out around the end of January. This is the only thing for which sales are in progress, or with any kind of delivery estimate.Prototype PCBs of the BM1385 pod will arrive soon.A prototype PCB of 2-chip Bitfury 16nm, heavily designed for piecewise testing, is in my hands and I will be playing with it shortly. Once this works, it will be a functional representation of a 2-chip stickminer. Only slight modification to controls and software will make an 11-chip pod functional, and further slight modifications to that will see a functional 33-chip S1 refit board. But this is still very much in design stage of development.I will not take money in for any project that has not successfully demonstrated functional hardware and basic software in prototype.

### Reply 12:
Did the post edit? I'm likely in for the upgrade kit as well depending on pricing, being the big one

### Reply 13:
This is the thread for the interest into the BF gear of SidehackThe upgrade kit is already there. - Sidehack S1/S3/S5 upgrade 4 THAs for the 2pacs, there is another thread : <link>

### Reply 14:
Thanks for the clarification Sidehack. This thread is really to make it simple for you to know how many person want some bitfury gear. Maybe this could shake Punin to start the delivery of the chip.As for the BM1384 compac and the BM1385 pods, would you like me to create a group buy also ? Edit: created the thread <link>

### Reply 15:
I didnt mock Punin. Just wanted to show the interest of the community with a home miner done by Sidehack with BF chip.

### Reply 16:
Oh sorry it was a mistake, honestly. Did edit my post! Now back on taking order for the 2pacs.

### Reply 17:
...the only explanation remains that to english (or french?) speaking people Punin and Putin spellings are very much indistiguishable just as letters l/r are to japanese, who do not have a letter that is pronounced like ""L"", but i digress

### Reply 18:
Okay tought I was imagining things hahI'd like more info on this, I have 3 s3's sitting here, and sticking boards in them would be amazing.But need to see more specs and pricing, if it's 2 boards per than I'd be down for 6 boards.

### Reply 19:
As soon as Sidehack update the status of the development I will update here.

### Reply 20:
Not so cool way to mock the only guy that is helping to provide 16nm chips.Also as a Finnish fellow (as mr. Punin is too) I highly dislike this comment.edit: Ok then, sorry

### Reply 21:
of course, I'm following that thread as well, just a FYI more than anything.We can all say we want XX number of something, until we have a price it's a mute point lol

### Reply 22:
Understand that, but if 20 vs 100 person want some, it could make a difference in the dev of it

### Reply 23:
I got 3 S3, 1 S5 and 1 S1so 10 boards for me.Might get a pod and a stick, still unsure for now

### Reply 24:
I wonder if these boards will be able to be installed into a 4U server case etc.. I realize you would need to source heat sinks, but nothing else would really be needed would it?

### Reply 25:
If an S3 can fit in a 4U server case then these can also. There was talk about a year, year and a half ago about trying to standardize something like that for more industrial-scale mining with swappable boards. Probably be more fitting discussion for the dev thread than a sales thread though. If I remember, I'll get some measures when I'm at <rest of thread truncated>
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    ""hardware_name"": ""Stick"",
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    ""hardware_name"": ""S3"",
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    ""hardware_name"": ""S5"",
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]"
24061,"Date: 2023-01
Topic: bitcoin-cli submitblock template
### Original post:
Thank you in advance for your time in reading. I am working on developing a template for the bitcoin-cli submitblock [1] method. I have posted Issue #26830 on the Bitcoin Core GitHub [2]. Issue #26830 provides a detailed overview of all available information relating to the proper form for block hashing and submission for validation. However, there are still two keystone questions I have to be able to get started:1. What, exactly, is being hashed?2. What, exactly, is the required format for submissions?As far as I can tell, block hashing requires hashing six variables, Version + hashPrevBlock + hashMerkleRoot + Time + Bits + Nonce. However, my previous impression was that hashing was a method for finding a nonce value, such that the nonce when hashed would produce a hash lower than the hash of the previous block. So, I am having trouble working through the logic. I am also struggling to understand what the file format for block submissions should be and how to format the file. It is not clear to me whether JSON or hexadigit format should be used nor how such file should be structured.Any advice or suggestions would be sincerely <truncated> <link> <link>

### Reply 1:
Answer to 1.The block header is being hashed and consists of six variables: [ 0]Version + hashPrevBlock + hashMerkleRoot + Time + Bits + NonceAnswer to 2.The getblocktemplate method returns the proper template for the blocksubmit method. The getblocktemplate documentation is available in the Bitcoin Core Docs. [ 1] To get a block template, run bitcoin-cli getblocktemplate.[ 0] <link> 1] <link>

### Reply 2:
A better area of the Forum to ask this in the Development & Technical area of the Forum where you will find more folks working with core and its various subsystems.

",[]
14165,"Date: 2011-06
Topic: 6990 rig setup help (b)
### Original post:
I have a 1200W CoolerMaster gold. This thing emits enough power to run support hardware and 3x6990s (Club 3Ds). Problem is the cables do not match with the graphics hardware PCI-e connectors. The PSU has 4xPCI-e 6+2 connectors and 2xPCI-e 6 connectors. The cards have 2xPCI-e 6+2 connectors each. So now I can power 2 cards, but not the 3rd one...Does anyone know whether the cards can run on one PCI-e 6+2 connector and one PCI-e 6 connector like normal cards seem to?

### Reply 1:
I dare to disagree with you on that.Or, at least I have some serious doubts.

### Reply 2:
Use a molex to 8 pin adapter or a 8 pin to 6 pin converter and a molex to 8 pin..

### Reply 3:
He does what I do.... try to mimic the 3x6990 setup from <link> says 1200w And 3x6990

### Reply 4:
Have you got yours running yet or still ordering?

### Reply 5:
Currently getting quotes and asking wild here - if I get the stuff sorted out, I would order next week, put it in poduction after the following weekend (because I bet some parts do not arrive till end of the week). Would be 1 of x

### Reply 6:
Well I am learning a lot. Feels like I'm 14 again I also have my doubts if the power supply will supply a 3rd card now, but we'll test and see, maybe have them all under-perform until we can source more juice.Great fun this mining business!

### Reply 7:
Actually it should. Going through some other posts it looks like people get the cards down quite a lot pwoer wise by selectively tuning the frequencies.Moving memory to 300mhz seems to be recommended with people saying cards run around 65 degree centigradem, and IIRC i read somewhere someone said fans at 30% - this indicates the card may run hot on a point (the processors) but memory and shader units are not busy at all... which makes sense

### Reply 8:
Even without downclocking memory a 1200W is enough to power 3x 6990s, though it is pushing the envelope a little bit. 6990s use ~375Watts per card (300 from 2x 8pin and 75 from PCI-E slot). That's 1125Watts max to be within ATX specifications. In reality they pull less but anyway I digress.To power 3 6990s you will have to get an 8-pin adapter cable. 8Pin PCIE cables supply 150Watts, 6Pin 75, so do not simply try to plug a 6 pin into the 8pin socket. There are 2 extra ground cables iirc in the 8pin.

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13987,"Date: 2011-05
Topic: Total Network Hashing Power rose ~30% in Past 48 Hours.
### Original post:
The Total Network Hashing Power rose ~30% in the past 48 hours.

### Reply 1:
I am part of that increase, my new GPU arrived yesterday

### Reply 2:
Is there a site you can use to monitor historical hashing power and difficulty?

### Reply 3:
Uh, I went from 80 to 290 M/Hash last night when my my 5830 arived. Actually more like when I arived back home to find my 5830 on the table.

### Reply 4:
bitcoinwatch.com has a Network Graphs section.

### Reply 5:
I also found this site today.... their graphs are pretty good: <link>

### Reply 6:
I suppose there were a lot of new miners in the mail this week, and people used the weekend to configure it.

### Reply 7:
This run in hashing power will become like Ferrari's market - only the chosen ones (those with >2Gh/s power) will ride them ...

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22590,"Date: 2018-05
Topic: Antminer S9 Static Pressure
### Original post:
I have search all over the forum and google trying to find the static pressure of the S9. To be more precise, the external static pressure of the exhaust fan.Everyone talks that it has high static pressure but no one have actually mentioned the spec (mm-H2O or inch-H2O)Anyone knows the exact data?

### Reply 1:
It's not the 'external' static pressure. There is no external or internal about it. Static pressure refers to how much pressure the fan can produce against resistance when it reaches zero airflow. As for the actual rating of the fans used, just search using the manufacturer name and part number on it.The thing on using high static pressure rated fans is that it applies to both the intake and exhaust fans - the rating can be reversed to imply how much suction the fan can produce. The s9 uses a very densely packed array of heatsinks making it difficult to move air through them so Bitmain just took the brute-force approach to it.As for measuring just what the pressures actually inside the miner, look up making a tube manometer - very easy to make - is just a length of flexible tubing then measure the pressure. I've never bothered to actually measure it because no reason to - what BM uses works.

### Reply 2:
I know ""Static pressure refers to how much pressure the fan can produce against resistance when it reaches zero airflow""The ventilation people need to know the static pressure of the fan because they want to calculate if the antminer s9 can push the hot air itself trough the duct and what duct size it needs to be able to do it.

### Reply 3:
Ducting into and out of an S9 is usually a bad idea. IF you have to do it, use at least a 6"" duct, at 4"" there is restriction and overheating.

### Reply 4:
I understand what you said and it is logic. I agree with you that putting more work to the fans is bad. The fans are already pushing air out. The idea was to know the pressure to see if that force was enough to push the hot air outside trough a big duct.I am planing to use a big duct, rectangle maybe 24in wide and make the S9 blow the air inside and push it out. That the reason why I wanted to know the static pressure

### Reply 5:
I have recently done testing on this very thing as we are designing enclosures for our s9s.As you may or may not know, S9s come with a variety of fans. They all have the same basic specs but in real world testing ill have one s9 moving 180 cfm, and one next to it moving 320 cfm based on the fans. One might have a 1,.6 amp fan, the one next to it might have a 2.6 amp or a 3.3 even. Since all s9s are not created equal the best you can hope for is a weighted average. Most people agree this is in the 225cfm range.

### Reply 6:
I asked bitmain about the static pressure and no answer. I guess I will have to pay a lab to get the info hehe.

### Reply 7:
You have your answers - if you are ducting miners you MUST use a fan/blower at the outlet of the ducts that can move at least the same CFM as the combined miners do. You CANNOT use just the miners themselves to do it. If you just want to ignore what has been said here, sure, go ahead.

### Reply 8:
Okey I get it, I need to install extractor at the end of the duct to help exhaust the air outside because the fan it self cannot do it. I was trying to avoid the extractor installation and buying one. I guess I got no choice unless I find a way to put the back fan of the miners blowing directly outside and the air not returning inside

### Reply 9:
Correct you can't avoid using an inline duct fan or what have you. The miners fans are mean to blow air out into ""open space"" not forced into piping ducts. If you're looking to save coin through expenditure I would look at venting the heat from the ambient air or if you have cut the miners to hot/cold sides from the hot side. alleviating the need for ducting and multiple inline blowers. my 2 satoshi's.

### Reply 10:
Rule of thumb when ducting any machine that normally has free air flow in and out, this applies to chillers, air compressors and and other self contained machine using high flow fans such as miners: Every single manufacturer I have worked with always required a powered ducting system rated at a free-flow equal to the machines stated airflow. Failure to do so voids the warranties.Don't hold me to it but AFAIK for a s9 that is a free flow in & out of around 250 cfm. Considering the fans are already working hard to keep reasonable temps, raising the work load by adding adding resistance (passive ductwork) will only reduce the miner's internal airflow and result in higher chip temps.

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14274,"Date: 2011-06
Topic: Mining on port 80?
### Original post:
Hi guysThanks for all the good threads on this forum, it's very useful!However I haven't found an answer to this. I have a totally unused server in a datacenter which can only access to the port 80 (plus 22 for ssh). Is there any way I could mine with it?Thanks ;-)

### Reply 1:
I saw a post earlier that said Eligius runs on port 80!

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13476,"Date: 2016-02
Topic: Software to monitor temperature of the mining farm
### Original post:
Dear miners,What hardware and software do you use to monitor room temperature and alert you if it's higher than normal? Especially in case of air conditioning failure? Best regards,Sander

### Reply 1:
If you have a security system that is monitored by a central office they can install a high temp monitor. It was well worth it for me.

### Reply 2:
That's an elegant solution!

### Reply 3:
Does anybody use any other temperature monitoring solutions except complex security system?

### Reply 4:
Cheap at $175.<link>

### Reply 5:
GPUZ work with a GPU, But I'm not sure if this work with many of them. Maybe an description of your mining farm could help.

### Reply 6:
Most miners have integrated temp sensors, you can read those values using the cgminer api typically. What type of miners do you have?

### Reply 7:
i used gtx titan x it cost a lot but it can do a lot for you

### Reply 8:
Some tools to do this on this website<link>

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21195,"Date: 2016-12
Topic: OVH Hosting
### Original post:
You might get away with mining a CPU coin, but it won't be profitable for bitcoin as you might earn one penny but nothing more. Cpu mining days have been over a few years ago. Plus, some hosters don't let you mine with their machines or they cancel your plan, which is not uncommon. If you want to mine BTC buy a S9 and have a low electrical cost.

### Reply 1:
Hello,There is this company called OVH Hosting. www.ovh.com They are very reliable and trustworthy. I am interested in mining bitcoin. Would it be possible to mine off of one of their plans? Which one would be the most efficient?

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17191,"Date: 2012-07
Topic: CG miner won't initiate device 0
### Original post:
Do you have the latest .net installed? Could you test the card in another 3d situation (gaming, for example)? If all else falls, reinstall windows. I hope this was a dedicated rig and you won't lose any personal settings and data.

### Reply 1:
So it was an opencl issue. Lame. Glad you got out worked out.

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21277,"Date: 2017-02
Topic: Spondoolies SP30 Issues
### Original post:
One of our SP30s is having some issues I'm hoping someone has experience with. If we power it up we can see it on the network for a few minutes, and it grabs some work. After a minute or so it drops off the network and stops all work. All the fans keep running and we can not see or get into it remotly until it is powered down for 15 seconds or so and plugged back in. Any ideas?

### Reply 1:
Sounds like it is overheating. Can you see the temps while it's running? Can you tell if one of the heat syncs came loose?

### Reply 2:
I'll have to pull it apart today sometime. I find the web interface annoying also. It dosesn't like to remember changes in the settings. On all of them. Always have to fight with it.

### Reply 3:
Once they start losing settings like that there really is no permanent fix. The memory chips have just gone bad. If you want it to remember settings you will have to boot it from an SD card.

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9002,"Date: 2015-03
Topic: Stanford process makes high-performance Gallium arsenide circuits cheaper
### Original post:
<link> is typically used in solar cells and computer chips. Gallium arsenide is an alternative material with many advantages. But it costs too much. A new process would reduce its various manufacturing costs.More info: <link>

### Reply 1:
This will be a game changer for sure.

### Reply 2:
The cost of the silicon is very low when compared to all of the man hours it takes to design a chip. Sure for off the self chips it might make them a little bit cheaper but manufacturers also have to switch to a process that uses this material. Also the power considerations if this uses more power or even the same it is still probably not worth switching to with carbon nanotubes around the corner.

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16682,"Date: 2011-06
Topic: Why are my bitcoins / day going down (BTC guild)?
### Original post:
Just set up some machines on Friday. I'm at about 3.3 Ghash. Since then I've been trying to get a handle on how many btc/day I should be making. According to this site: <link> should be making about 3.7 btc/day. So I was watching my btc/day go up (I only had 1 computer running prior to Friday). The ratio got pretty close to 3.7 but has been declining steadily now. I'm below 3. Mining primarily on BTC guild this week. I checked the block stats and it's not an error in the site's btc/day calculation. So I'm a bit puzzled.Why are my btc/day going down? From what I know, the difficulty level hasn't changed much. The site still shows 877227 which is in line with what I've seen elsewhere.At this rate, I'll be mining less than 1 btc/day in a few weeks. That makes no sense to me.Comments / input <truncated>

### Reply 1:
If you look on the block statistics page BTCGuilds luck is -14% atm. So if you take your past 24 HR collected is it 14% less, roughly, than you think you should be getting? Your miners could be taking a little longer than average also and you could be getting a higher pct of stale shares.Those are my thoughts. Maybe someone with more experience can chime in also.

### Reply 2:
I noticed the same, I just asked on IRC and an admin confirmed above posters assumptions.

### Reply 3:
Ah, I see. I wasn't clear on what those luck values were. Thanks. Now I can google more about luck and how difficulty changes over time with btc mining.N

### Reply 4:
Variance old bean. The time taken to solve each share everyone is sent is random, but has an average related to the difficulty. On smaller pools the variance will be huge because there's so few workers and they could easily have a bad streak. Buy just as likely they can have a good streak. On larger pools you have less variance because you have much more workers so bad streaks/good streaks are averaged out. But it doesn't matter which pool you use because over a long time span they average out to your expected earnings (not taking fees into account), just depends whether you like frequent small payments, or infrequent large payments.

### Reply 5:
Also, If hashrate has increased, your % of the total hashrate is lower! As for luck, the current difficulty is 876,954! If a block is solved in <876,954 shares, it is considered ""lucky"". If more, then it is ""unlucky"".

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23088,"Date: 2019-09
Topic: Adjusting Miner Mode depending on powerplant outpout
### Original post:
First post, so: Hi everybody!I'm about to start mining in our small hydro power plant.I was wondering if anybody is doing automatic mining mode switching, dependent on the amount of power a generator is producing at a given moment.For example:if plant output is greater than 20KW -> mine using turbo modeif plant output falls below 20KW -> start switching miners into economic mode - one by oneif plant output falls below lower treshold -> start turning mininers off completelythat should happen automatically to avoid the situation that the plant starts drawing power from the grid instead of feeding it.as this is going to be a rather small farm i've got a feeling it doesn't make sense to put a lot of effort into developing our own automation setup, that's why i'm hoping to maybe hear from other hydro operators how they are solving this issue.curious to hear your thoughts. thx!

### Reply 1:
It would be easier to turn them off.Lets say you have 9 s17s pulling 20000 watts.Rather then switch to low speed turn two off.You only need to operate a few pdus that can be shut down . Much easier for that action.

### Reply 2:
That just came in the bOS channel, there is people lowering the speed of chips as an alternative of powering off (if no pdu/breaker with remote control).Less efficient than yours, but pulling way less power Goal would be to find the setting where the boards remain hashing but with the smallest power and noise use, even if its not the most efficient (ie. not 80W/T). This begs for <truncated> idea being: when certain condition occurs, swap cgminer.conf with these settings for ""low power mode"" (since S9s can't be turned off on their own).I assume OP has the plant connected to a grid tie inverter and is currently (also) freely drawing from the grid as needed...I have no idea if the hydro plant can somehow communicate this condition to a computer to act upon. I suppose it does, or maybe the grid tie inverter itself?

### Reply 3:
wouldn't just cutting the power supply damage the hardware in the long run?do recent asics even have the ability of a software shutdown and remote reboot?thx for your input. doing it via pdus would definitely be possible and easy to implement.yes, the miners need to halt immediately if power generation is lower than what they demand, otherwhise they plant will draw energy from the grid at market price.we do have analog signals, which could be used to operate PDUs in case the plant shuts down (due to emergency or maintainance for example). that would be easy. it should also be possible to get digital data from the control unit about the amount of power generated, which could be used for doing software controlled action.

### Reply 4:
Unfortunately i don't know of any Asic miner with software shutdown, all they can do is restart, and if you go the Braiins OS firmware route, you could in theory reduce its consumption significantly but not completely turn it off. If it is of any help, think that each miner could change from pulling 1400w into 360w with that trick, depending on how many you have, it might be easier to do it this way.All you need is to do is run a script in the miner itself to poll the power condition, and act upon it. In your case i would have two cgminer.conf files ready, one for normal condition, and another for low power condition, and switch accordingly. The script would just run off cron periodically as often as you want (just don't run it every second, please). Software changing the speed is rather simple and painless, it only restarts cgminer.The only other alternative is as you said, turn on and off the PDUs. If you go that way, try to use different delays for each PDU, avoid having all of them go on and off at the same time...

### Reply 5:
Eww 360w per miner. To the OP just make sure there is no IP preventing you from doing what you want to do. But everything you want to do is possible.

### Reply 6:
That setting wasn't the most optimal, 85W/T, but the idea was simply to lower the power and noise, which is what op wants. You can find a more optimal config, or an even lower power consumption at even worse efficiency that lets the boards some hashing instead of ""idling"" in ""consume a lot"" mode...Or a poor man's sleep mode.

### Reply 7:
I mean I can get them to 20w not running and fairly stable at 80w at about 600w per miner @ about 8-9th, we don't usually go that low.My response was simply everything he wants to do is 100% possible but he should look to see if there isn't anything that legally prevents him or poses a risk to the power companies financially.

### Reply 8:
What speeds and voltages are you using?360w is for the whole unit which is almost half of yours.And yes the idea is to do something akin to turning it off, but you could tweak it more depending on electric capacity. That's the beauty of having full control of the chip speeds and voltages.

### Reply 9:<rest of thread truncated>
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4127,"Date: 2012-07
Topic: selling Plug and Play RIG 3.8Ghash/180watt - 10 icarus board
### Original post:
I sent you a PM to discuss

### Reply 1:
pm send too

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9632,"Date: 2016-01
Topic: Running an S7 on two PSUs (120V Not 240V!)
### Original post:
Hey guys so due to slow BTCTransfer from Coinbase I'm going to miss out on the Avalon 6 I planned on getting for home mining. Now I'm considering going back to an S7. The only problem I have is that I have no 240v connection in my home and have to run off of 120V.I have a Corsair 1000H PSU <link> planned on running 2 boards fromand a 750Hi <link> run the other board and controller on. Will this be alright on my 120V 15A connection in my garage? I dont have a problem underclocking a little to make it work, just want to make sure its SAFE and doesnt burn my house down. Any input would be greatly appreciated. Cheers.

### Reply 1:
Should be fine, yeah. 120V 15A, would give you 1440W of AC input (assuming 80% continuous draw as safety margin). If the circuit is running only that miner, this gives you something like 1300W of DC output, which an S7 would only request what, 1000 to 1200 depending on batch/model and clock setting?I'd put the 1000W across two blades, and the 750W across the third blade and controller. That'd keep both of them at about half power for good efficiency.

### Reply 2:
The only thing else that runs in the garage is the garage door opener, gas heat, and the water heater. The water heater is my biggest concern and I will investigate tonight when I get home what kind of power it eats up. If its too much I may be looking at another room in the house as it looks like I'm approaching max wattage. You're answer helps alot though sidehack, thanks.

### Reply 3:
Just as sidehack said, just make sure that miner is the only thing running on that circuit. I would go to your box and turn it off and on checking outlets to verify this using something like this <link> If you find any other outlets wired to the same circuit I would mark them so you don't forget and plug a power tool, etc. into the outlet

### Reply 4:
Gas heat shouldn't be an issue. is your water heater gas or electric? and check the outlet that the garage door is plugged into and turn that 15 amp off in your box to see if garage door still works.You might also have a couple 15 amp breakers that are on the same circuit. I have 2-3 15 amp breakers that run on the same circuit to prevent overload. Use that cheap outlet checker that lights up. You can get them at home depot for cheaper as well.

### Reply 5:
Yeah this sounds like the best option. I took a quick look at my breaker box last night and did see a few rooms with double 15A Breakers, I imagine the garage/kitchen would be some of those. I'll pick up the outlet checker at Lowe's tonight on my way home.

### Reply 6:
What do you mean by this?

### Reply 7:
A B8 S7 at stock speed will consume a bit over 1440w at the wall with anything but the better end of a gold efficiency. With two EVGA G2 at 50% load i got 1440W exactly after i brought down the fan a bit, but my 120v circuit drop to 115v when all the miners are mining so, something to keep in mind.

### Reply 8:
I'd be leery of running it if I saw a 5V drop in the wiring. That's a lot of power loss. But then I've never liked 15A circuits; the smallest I've ever liked to install was 20A with 12AWG wiring. For a few months in early 2014 I had five S1 running off three load-balanced 750W on a single 20A circuit. That wire got a bit warm, but it wasn't 20 feet from the panel and, being a ceiling run in the basement, was open-air exposure from end to end.

### Reply 9:
Alright guys finally got home and checked out my box. Looks like a have an entire 20A breaker just for the plugs in the garage. All other major appliances are on different circuits. The only thing that shares power with receptacles in the garage is the garage door opening motor. The plugs also have the trip/reset switches built in which makes me feel a little better. I plugged in a 1500W floor heater and ran some power tools last night and never had an issue. I know that's not a great way to measure if the circuit is up to the task of running an S7 all day but I'm willing to give it a go.

### Reply 10:
If it's proper-sized wire (which it better be!), a 20A circuit should have no trouble at all with an S7. Garage door opener probably doesn't pull much power, but it might be worth testing it with your heater plugged in and running. The worst-case instantaneous draw will probably be if the door jams (or someone kicks the laser) and reverses direction suddenly.When you say trip/reset switches, do you mean GFCI outlets? That doesn't really protect against a current overload, just cuts the power if it detects current on the earth ground (which usually indicates something in your PSU is going very wrong).

### Reply 11:
I will pull off the breaker box shroud another night and check the wire to see what gauge just to be double sure. And yes I was talking about a GFCI built in. Have to do some more calculations to see if mining an S7 can even cover my costs through the next several months with diffi<rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power tools"",
    ""hardware_is_owned"": true
  }
]"
17211,"Date: 2012-07
Topic: p2pool - unhandled error
### Original post:
Getting random errors, go away and keep coming back for hoursAny <truncated> 17:55:08.709943 New work for worker! Difficulty: 0.999985 Share difficulty: 577.210918 Total block value: 50.080050 BTC including 205 <truncated> 17:55:08.712789 > Unhandled Error2012-07-28 17:55:08.712834 > Traceback (most recent call last):2012-07-28 17:55:08.712870 > File <truncated> line 5, in <module>2012-07-28 17:55:08.712912 > <truncated> 17:55:08.712936 > File <truncated> line 778, in run2012-07-28 17:55:08.712960 > <truncated> 17:55:08.712984 > File <truncated> line 1162, in run2012-07-28 17:55:08.713013 > <truncated> 17:55:08.713037 > File <truncated> line 1174, in mainLoop2012-07-28 17:55:08.713061 > <truncated> 17:55:08.713084 > --- <exception caught here> ---2012-07-28 17:55:08.713107 > File <truncated> line 104, in doSelect2012-07-28 17:55:08.713131 > [], timeout)2012-07-28 17:55:08.713154 > <truncated> filedescriptor out of range in select()2012-07-28 17:55:12.319224 P2Pool: 17467 shares in chain (15445 verified/17471 total) Peers: 13 (3 incoming)2012-07-28 17:55:12.319299 Local: 744MH/s in last 10.0 minutes Local dead on arrival: ~13.5% (8-22%) Expected time to share: 55.3 minutes2012-07-28<rest of post truncated>

",[]
9343,"Date: 2015-09
Topic: XBTec Pacific V3 3.2Th, 0.8W/Gh
### Original post:
why small fans? so loud

### Reply 1:
So how did you get to 3.2 TH/s from 2 Prismas? From your pic you have 16 boards, each Prisma shows up as 8. Right now people are only getting 1440 GH/s per device. So you guys must be overclocking these pretty high.

### Reply 2:
Cooling and psu it's very important, if you use psu with stable 12v line and heatsink with square around 4000 cm^2 chip works without problem on frequency 270 MHz it's not overclocking. We geting 3.5 thash with same power consumption on 290 MHz when outside was very cold. Maybe prisma couldn't work stable with computer PSU, because after losing on the cables voltage on conectors can be 11.4v - 11.5v it's not important when you use dc\dc, but then we talk about string design it's very important, because voltage separate between chip. Maximal what possible getting from 1 boards around 480 Ghash if use higher voltage.

### Reply 3:
That is right, when temperature in Shenzhen dropped down o 23 C degrees, we've got better hashrate.It seems like causality, not just correlation.We didn't try to use mine on 290Mhz, nice idea. We gonna try today. Thank you for advice

### Reply 4:
If you went with two (maybe 3) large fans, the failure of ANY of those fans could cause catastrophic overheating as BE200 doesn't have temperature sensors. By having 6, a fan can fail without problem. tldr, redundancy.

### Reply 5:
quality fans dont crap out in my experience - and the AM Prisma only uses 1 fan itself anyways

### Reply 6:
I'm giving you the reason the manufacturer chose 6 smaller fans, you can argue it all you want.

### Reply 7:
Dogie has a valid point with the fan logic. It's not about fan failure rates, its about redundancy and cooling in the event of failure.

### Reply 8:
And the source of your device is?The answer is ....no thanks but it is translated in English which is a good startGood luck ...I like the numbers about rejects expected and real performance Are you using consts and 0 HW error rate also.By the way what UTI means . something like Utility?Just be ashamed....Make it open source so we can see what you are actually using and what constants are inside

### Reply 9:
Just to clarify, I meant the reason that XBTec told me they went with 6 smaller fans.

### Reply 10:
This miner is meant for datacenters, not for your room or home office. Same reason full servers are not a nice thing to have sitting in your office, efficiency and airflow is primary, audible noise isn't a concern. These are likely high RPM fans not unlike what you would find in a commercial server. If you are looking for a home miner, this isn't it.Plus look at that constant 2500 watt power load, you would be hard pressed to even run this thing on a home outlet.

### Reply 11:
Do remember that the US has unusually bad circuits.

### Reply 12:
I would hardly say that the typical 15Amp 120v circuit in the USA is a bad circuit. With the exception of bitcoin miners, I've found few items that trip a typical circuit. Items that typically draw a lot are often placed on their own circuit in new construction. This of course can be a problem sometimes for those with older wired houses that weren't designed to have all the modern draw appliances.If you know you need a 2500w draw, then you know you need either 2 circuits or 1 220v circuit.....

### Reply 13:
This just appears to be 4 asic tube miners put together in one box with 2 psu. Nothing really is achieved other than a nicer form factor.Remember the asicminer tube was .77 BTC for 1. So this is four of them or 3.08 BTC + the PSU and the case. Obviously based on the wiring setup of this, it's not like they created circuit boards or other stuff to handle the mess of PCI-e wires. So i've racked up that this is worth 3.08 BTC + PSU. Which look oddly the same as the ones in the antminer s4 and the prospero x3 - ie a sunshine (apluspower) ap188. Plus a metal 3u box. The nice form factor is cool and all, but by no means is worth the increase in price. I doubt the efficiancy is what is claimed vs an asicminer tube - as both produce the same 215gh per board for 280 mhz clock.

### Reply 14:
Dogie, an ignorant statement like that, makes me wonder the level of knowledge you are relaying through your numerous (paid via amazon associate tag) reviews. As an electrical engineer having lived in the U.K, Australia and the U.S, I can say the worst electrical circuits and standards are by far in the U.K. Australia follows close behind with some of the best located in the U.S. I'm not saying the U.S excels overall, and I can name many areas they could improve on, following international standards for example, yet when it comes to residential and commercial circuits, the U.S cabling has a higher over rating than others by far.

### Reply 15:
Are you.... are you honestly trying to argue that the USA's110V 20A (16A 24/7) = 1760Wis better than the UK's240V 32A (36A 24/7) = 8640Wfor bitcoin mi<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Prismas"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BE200"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AM Prisma"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asicminer tube"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""antminer s4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""prospero x3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sunshine (apluspower) ap188"",
    ""hardware_is_owned"": false
  }
]"
10335,"Date: 2017-06
Topic: Raspberry mining+bitcoin erupter.
### Original post:
Hello all,i've watching video about mining with rapsberry,a vid show build rig using raspberry and bitcoin errupter.if mining i start mining with raspberry arduino and erupter,how much i got ?and how about <truncated> opinion is meaningfullEDIT : let me know if you have/join any grup for mining on telegram. i really appreciate it

### Reply 1:
You will need a Nuclear power plant like this one below to mine with the erupter!!! Be careful !!!!!!

","[
  {
    ""hardware_name"": ""Raspberry"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitcoin Erupter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Arduino"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Nuclear power plant"",
    ""hardware_is_owned"": false
  }
]"
21404,"Date: 2017-05
Topic: UPS on S9's?
### Original post:
Hello community,i have several Antminer S9's and a problem with my electricity which is voltage drops and the machines keep restarting. So my question is can i add a not so big UPS on each and every miner NOT to keep it running on power drop but to clear any peaks on the electricity

### Reply 1:
The amount of power S9s draw is too much for a standard home UPS. You would have to buy something large and expensive.

### Reply 2:
You are in a tough situation in the sense of ROI with this need for UPS system.

### Reply 3:
okay so what can i do to protect the machines ? circuit breakers? and also can i add extra net switches so i can somehow protect the control board from peaks on the LAN from the ISP?

### Reply 4:
You need a bigass online UPS.But that is most likely going to hurt your profit.Basic things for mining hardware:-stable electricity-stable <truncated> coolingCheck out GE LanPro series for example and contact a professional electrician, find out price and other details.

### Reply 5:
Just like de'ja vu all over again... Please ref <link> for my choice of UPS.And yes they are big'uns.

### Reply 6:
you can add cheap offline UPS if the sole purpose is to clear the peaks and provide at leats a couple of minutes of online time,just buy the cheapest onesor you can use <link> for exampleit won't be able to keep all five miners online but will provide surge protection and level the peaks

### Reply 7:
The cheap ones are honestly not worth it at all, if you're going to get a UPS get a good one that'll keep it up for as long as possible. The cheaper you go the lower the quality and the less time it adds. Also, we're talking about S9s and 865 watts won't keep it running for long.

### Reply 8:
If it runs at all. Even a halfway-decent UPS should shut down as soon as you exceed its rating.

### Reply 9:
yes,you are right,it won't hold for longbut the purpose is not to keep the miners online at all time and all costs,if I understood OP correctly-he has unstable electricity so the blackouts are very short in time but happen pretty oftenthe cheap ones ( offline 600+ rating or so ) should be able to switch to the battery and back till the power is restored (2 minutes or less),the ROI on s9s is what he has to keep in mindit would be only too easy to buy five 200$ 2000 rating online UPS and sleep wellone of the main reasons s9's break down is the power failure though,blades and controllers are dying like fliesand one blade costs what 300$ if your warranty expired?so make sure you weigh pros and cons when you decide how much you want to spend on UPS/surge protection

### Reply 10:
honestly your pretty stuck, a cheap UPS will need its battery's replaced pretty much every year, a good quality one may last 2-3 years. so its really not worth it. if its short brown out then a good quality PSU should be able to handle that as they have capacitors to fill short gaps and voltage dips and surges. S9 is about 1000watt which for a good UPS will cost about $1200 per miner, if it was DC then theres a few solutions but theres no cheap solutions for AC current that i know of i guess if you where seriously desprate and it happend very often and you didnt care about wasting extra power you could do wall socket ---- 12vDC step-down convertor---- nice big 12vDC capacitors ---- 12v convertor then wire that in to the miners directly so you dont need the PSU anymoreits probably the best solution but have to run it through a couple of electricians first

### Reply 11:
Used Electric Free method. something like used cheap trick but installed expensive. And no worries without Main Electric Socket.i used this trick. and no need UPS Happy Mining + Green Consumption

### Reply 12:
care to elaborate what is this ""Electric Free method"" ?green consumption is very good,but there is no such a thing as free electricity,well unless you are stealing or taking it from another source

### Reply 13:
no sir. example some generator used solar. and the with trick change with green/eco energy. My friend can do it. even he said 10 Antminer S9 can handle and without worries down.That mean this method need some energy concept where you can change from Basic Energy to Low Consumption Energy PS im not kidding i visit his place last time (if i come visit him again i wanna give shoot sample energy what i mean)

### Reply 14:
I like APC UPS but their 1500 VA units will not handle even a SINGLE Antminer S9, T9, R4, or S7.900 or so max WATT rating (the 1500 VA capability is for use with older <truncated> computer power supplies).It WOULD handle a single S5 comfortably, or a PAIR of them will handle a S9 if you are using 2 separate power supplies to power the S9 with.In the APC line, you'd have to go to at least one of their 2000 VA units (which do NOT come cheap unless you get them used with dead batteries) to handle even a SINGLE S9 running on a single PS.Nice thing about APC models - they ALL have current-limited cha<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""UPS"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""circuit breakers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""net switches"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GE LanPro series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APC UPS"",
    ""hardware_name"": false
  },
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  }
]"
14103,"Date: 2011-06
Topic: Quad 5870 ... will this work?
### Original post:
After literally days digging around for a 5970 or a 6990 for less than an arm or leg, on impulse I snatched up 4 5870's ... I figure this should land me easily somewhere north of 1500MHash/s, hopefully more like 1600. Which is more than a pair of 6990's or 5970's would do, and costs about the same. The price I pay, I presume will be in power efficiency. They are rated at 200W max draw (according to AMD). I do not plan to O/C.Details:4x 5870MSI 890FXA-GD70No case, custom cooling/fans Questions:PSU: 1000W ? Or 1200W for better efficiency (running around 70% of rated load)?Is a single core CPU (3Ghz) enough to keep 4 GPUs busy? This will be a dedicated system.

### Reply 1:
GPU mining (should) barely use any CPU at all. Latest startup on my windows poclbm-mod miner has poclbm using about 8 CPU minutes over about 9 hours. Compare that to task manager using 15 minutes in 3 hours, and IDK how much in chrome/etc. It barely even uses 1% of the CPU, the bitcoin/bitcoind probably uses more CPU to handle block processing.As for if a 1kW PSU will be enough, and how efficient it will be, depends ENTIRELY on the PSU. Remember most of the load is going onto the +12V rails in that scenario, and so the PSU has to be appropriately sized. I've a 700W PSU that has PCIe connectors but can not have more than about 375W across both +12V rails on the PCI-express connectors (200W on one, 175W on the other rail) so it would maybe run 2 5870s. I've another (newer) 400W PSU that can actually do almost as well (18A on either +12V rail, but a combined total of 350W). So really, you have to see the plate on the PSU to be able to have any hope of telling. That said, most of you're big 1kW+ PSUs are designed pretty good and heavy on +12V these days (unlike my 700W example)

### Reply 2:
Sweet. There is something very refreshing about spending $30 on a CPU for a system with well over $1,000 in GPUs in it

### Reply 3:
if you don't plan to overclock don't expect 1500-1600

### Reply 4:
a single core CPU like sempron is enough and efficient! but you should have at least 1GB of RAM since the miners are ram hungry.

","[
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""6990"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MSI 890FXA-GD70"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU 1000W"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU 1200W"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""single core CPU (3Ghz)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""700W PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""400W PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sempron"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1GB of RAM"",
    ""hardware_is_owned"": false
  }
]"
23837,"Date: 2022-01
Topic: Aisen A1, Aixin A1, S5 Cheeta F1 (My case is Aisen A1)
### Original post:
Hello, yesterday when I was trying to give static ip to the machines they started giving this error, I tried to reverse the situation by changing it again to dhcp, and it continued to give the same problem, could anyone help? (the ip you assign at the time had never been assigned by the router).The error:Logs begin at Tue 2022-01-11 23:05:09 CST, end at Tue 2022-01-11 23:07:31 CST. --Jan 11 23:05:09 rockchip systemd[1]: Starting Cgminer...Jan 11 23:05:09 rockchip systemd[1]: Started Cgminer.Jan 11 23:05:09 rockchip cgminer[29801]: double free or corruption (out)Jan 11 23:05:09 rockchip cgminer[29801]: Complie date : Aug 26 2019Jan 11 23:05:09 rockchip cgminer[29801]: [2022-01-11 23:05:09.337] Shutdown signal received.Jan 11 23:05:09 rockchip cgminer[29801]: [2022-01-11 23:05:09.337] Shutdown signal received.Jan 11 23:05:09 rockchip systemd[1]: cgminer.service: Service hold-off time over, scheduling restart.Jan 11 23:05:09 rockchip systemd[1]: cgminer.service: Scheduled restart job, restart counter is at 2875.Jan 11 23:05:09 rockchip systemd[1]: Stopped Cgminer.Jan 11 23:05:09 rockchip systemd[1]: Starting Cgminer...Jan 11 23:05:09 rockchip systemd[1]: Started Cgminer.Jan 11 23:05:0<rest of post truncated>

### Reply 1:
Can you try a factory default reset?I have never had my hands on one of these Aixins

### Reply 2:
I would like also suggest is to try to replug this miner from the wall outlet and replug the Ethernet cable after you do reset. You can also try to do a hard reset I don't know what this miner looks like but I search and it looks like an Antminer s17 miner. Can you try to hold the reset button or the IP report button for 15 seconds then release then replug the miner?You can also try to upgrade the firmware I found someone here who posted a firmware for this unit check the link below- <link>

","[
  {
    ""hardware_name"": ""Aisen A1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Aixin A1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5 Cheeta F1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer s17"",
    ""hardware_is_owned"": false
  }
]"
9040,"Date: 2015-04
Topic: Reboot Antminer S1 Automatically The Instant It Stops Hashing ***UPDATED
### Original post:
Every once in awhile my Antminer S1's will stop hashing.I am not sure why there is no rhyme or reason or pattern.I just know that I have to babysit them and reboot or power cycle when they stop hashing.This seems to be a common problem. The reason has yet to be identified.I don't have time to be a babysitter and I also need to sleep. So I wrote a small script to check for hashing and set it to run every minute. If the S1 has stopped hashing it will automatically reboot.1. SSH into your miner. I use putty (<link> enter your login credentials3. type cd /bin4. type vi hashcheck5. type the following code (shown below in bold) into the vi editor #!/bin/ash var=$(cat /proc/loadavg | grep . | cut -c 1) if [ $var -lt 1 ] then /sbin/reboot else fi6. Press the Esc key7. Type :x and then press enter8. Close putty9. Now access your miner via the web interface10. Click the system tab11. Click Scheduled Tasks12. Under */3 * * * * <truncated> add the following on the next line */5 * * * * <truncated> Click Submit in the bottom right hand cornerThat's it. Now your miner will run this script every 5 minutes. If the miner has stopped hashing the script will return a value of 0 causing the miner to r<rest of post truncated>

### Reply 1:
Thanks rotediablo great script,One of my Ant's has just developed a random powering off 'feature', not sure your script will help that issue for me. I have used a different PSU but same problem ??

### Reply 2:
Same problem.. alas not brave enough to try that.

### Reply 3:
i think you need andurino, just connect wires to psu directly instead a paperclip, use pool api to check if unit stopped hashing, if yes terminate virtual paperclip and connect it again by andurino...

### Reply 4:
great that you have used my line cat /proc/loadavg | grep . | cut -c 1 i mentioned in other <truncated> script does not work1)you are creating file /bin/hashcheck not /usr/bin/hashcheck so reference in crontab should be modified2)Syntax error near unexpected token 'fi' is given when you are launching script by handit is becouse of line with ""else"", it is not needed.3)you have to change permissions to execute hashcheck fileto sum up:point 3type cd /bintype cd /usr/binpoint 5elsepoint 5.5chmod 775 <truncated> thanks for great effort. my antminer just stopped hashing, i wrote your script and now it is hashing again

### Reply 5:
What is Andurino? As of now the Ant won't even power up.....

### Reply 6:
Its Arduino.<link>

### Reply 7:
sorry for my lame spelling...

### Reply 8:
Just want to say thanks for this sticky.

### Reply 9:
One of my Ants has been having the ""I forgot how to hash"" problem so I just installed this script with the suggested modifications.Got it to appear in my system log, so I think I did it right.Keeping fingers crossed that this keeps my Ant from sleeping while I am away at work!Thanks so much!

### Reply 10:
Here is my experience, S1 restart generally two reasons, 1: bad power supply 2: The network connection to the mine pool is unstable.

### Reply 11:
When you typed ""5.5"" as in, step five-and-a-half, what did you mean by ""chmod 775"" and where does it go? #!/bin/ash var=$(cat /proc/loadavg | grep . | cut -c 1) if [ $var -lt 1 ] then /sbin/reboot else fiand you wrote:point 3type cd /bintype cd /usr/binpoint 5elsepoint 5.5chmod 775 <truncated> does that mean, the correct script looks like this?cd /usr/binvi hashcheck#! <truncated> /proc/loadavg | grep . | cut -c 1) if [ $var -lt 1 ] then /sbin/reboot fichmod 775 <truncated> that the full script? Thanks.

### Reply 12:
Old thread but I still have an S1 and this works.Compilation of all editions above since it was a bit confusing.1. SSH into your miner using Putty. (<link> Enter your login credentials3. Type cd /usr/bin, press Enter4. Type vi hashcheck, press Enter5. Type a, then type the following code into the vi <truncated> /proc/loadavg | grep . | cut -c 1)if [ $var -lt 1 <truncated> Press Esc, then type :x, press Enter7. Type chmod 775 /usr/bin/hashcheck, press Enter8. Close putty9. Now access your miner via the web interface10. Click the System Tab > Scheduled Tasks11. Paste the following code inside the textboxCode:*/3 * * * * <truncated> * * * * <truncated> Click Submit in the bottom right hand corner13. Click on Status tab > System Log and wait 10 min14. Refresh the page, scroll down to the bottom and look for something like this Mon Apr 28 16:58:01 2014 cron.info crond[576]: crond: USER root pid 3223 cmd <truncated> with vi can use this cheat sheet - <link>

","[
  {
    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Arduino"",
    ""hardware_is_owned"": false
  }
]"
20334,"Date: 2015-03
Topic: Antminer S5
### Original post:
How to reduce the noise level at the miner.... I can snip the Fan too loud and use other fan? I have set off at 80 celsius. the noise level is crazy.

### Reply 1:
you can replace it with something like artic f12 pwn and set it at 50% speed, should be enough for cooling the minerif you are good at it, you can try to lower the voltage to 5v, this will lower the fan rpm

### Reply 2:
but where can I connect externally to s5 I see a 4 pin connector .. but I do not know what is it for..?

### Reply 3:
connect it to the one were the previous fan was connected, if it is 2 pin only then you need to connect the fan directly to your desktopmaybe post a picture of that 4 pin connector

### Reply 4:
This is a molex to 3 pin adapter: <link> can get 4 pin versions as well. If you do that you can connect your replacement fan straight to the connector. It's a good option if your having trouble connecting the fan to the PCB.

### Reply 5:
<link> tried to put this out there on one side. went into full 3000 rpm but not enough, miner was 93 degrees and do not count ... and on the other side some corsair fan ...it did not help, miner overheats.I think it's from the engineering point of view is very very badly designed miner.The need for water cooling in the price of $ 250 but the postage is too 200usd ...but if they put that 4000 thousand speed fan for some sort of link a speed regulator, it would be a solution for smart people.I had something like this before many years the custom fan and heatsink for the video card .. beautiful speed controlled fan. to 3000, for example, could be maintained below 80 degree S5

","[
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""artic f12 pwn"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""molex to 3 pin adapter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""corsair fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""custom fan and heatsink for the video card"",
    ""hardware_is_owned"": true
  }
]"
17169,"Date: 2012-06
Topic: Complete noob on Ubuntu 12.04LTS need help (0.5) btc
### Original post:
i need to setup a 5x sapphire 5850 mining rig in linux because i have tired of the 7 days freeze ADL bug on windows 7 ! i have tried to study how to play with ubuntu but failed to success i need to complete the following task 1) setup a cgminer 2.4.2 with linux running with 5x sapphire 5850( i have found some threat talking on cgminer installation but i cant make it work as i have already download and extract on desktop and i just dont know how to install )and i need to put a .bat file on desktop so i can open it easily 2) install best driver for 5850 driver maybe ati 11.11 ?3) Install devcoin client on ubuntu on 12.04LTSany help would be appreciated !

### Reply 1:
can you provide ssh or vnc access?

### Reply 2:
I dont know what you mean as i am a complete computer noob also !ssh or vnc access ? how to enable it ?

### Reply 3:
Dont use ubuntu 12 if this is a dedicated mining rig. Backporting older drivers may not work, and even if it does, its gonna be way above your head.My advice: install ubuntu 12.04 on your primary desktop or laptop to get familiar with it. But for the mining rig, have a look at BAMT or even good old linuxcoin. If for some reason you need a full desktop and HDD install on the mining rig, use an older version of (x)ubuntu like 11.10. It will install older drivers and sdk, which are better for mining.

### Reply 4:
now the installation of the devcoin is done !now need someone to help on CGminer on the Ubuntu 12.04 system

### Reply 5:
Just updated the guide. Thanks for feedback!

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10747,"Date: 2018-07
Topic: Canaan vs. Bitmain PSUs test
### Original post:
Hi all. My data center is getting warm (air temp at the entrance to the miners is around 85F) and I was curious if one brand of miner PSU vs. the other was dealing with it any better.Awhile back I ordered a <link> thinking I could use it on one of my power panels, but it was way too light duty. Instead I spiced it into a spare power cord and put the whole thing in a plastic wall box. A few wire nuts and a bit of electrical tape later I had a fully functional ""watt meter"" for my power <truncated> I planned on using existing power supplies, one APW3++ and one Sorcerer. For each test I allowed an Avalon 841 miner to fully spin up, measured by watching the power usage slowly climb until it was bouncing +/- a few watts.Test 1: APW3++ 1439.4 Watts, 6.29 Amps at 232.1 volts.Test 2: Sorcerer 1451.3 Watts, 6.33 Amps at 232.6 volts.Then decided to unbox a new APW3++ and test it on the Test 2 miner, since the results were close, and we know individual miners vary a bit:Test 3: APW3++ 1448.4 Watts, 6.32 Amps at 232.4 volts.Good news... its appears the power supplies are, for all intents and purposes, equally efficient. The APW3++ has a higher rated temperature range, but past experience (espec<rest of post truncated>

### Reply 1:
You should go read Phillip's review thread and realise that the Avalon 841 power consumption actually depends a lot on your temperatures,rather than which brand power supply unit you use. <link>

### Reply 2:
I've actually read through those earlier. Its why I wanted to test using the same miner, at the same temperature. I didn't catch that PSU brands were tested.

### Reply 3:
If you run an Avalon 841 in a room over 80f it burns more power.I did most tests with the Corsair ax1500iBut I did test the delta 2400 watt and the hp 2450 wattAll of them. Run better when the room is at 67fAll of them run worse when the room is at 85fI did test up to 91f with the 2400 watt delta and it pulled 1545 wattsI did test up to 100 f with the atx1500i. And it pulled about 1525 watts.If you live in a seasonal place I am NJ. You will need to downclock or ac cool for 3-5 months and you will do very well for the cooler months

### Reply 4:
So the corsair are more efficient at higher temps? Makes sense for psu designed to mounted inside a desktop. Much larger intake fans on my evga 1600w than the antminer or other brands. Only draw back was $400 price tag when I bought them.

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    ""hardware_name"": ""Avalon 841"",
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    ""hardware_name"": ""Delta 2400 watt"",
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    ""hardware_name"": ""HP 2450 watt"",
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    ""hardware_name"": ""EVGA 1600w"",
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]"
15471,"Date: 2015-02
Topic: MOVED: Get Free 100 GH /S trial
### Original post:
This topic has been moved to Trashcan.<link> spam

",[]
11612,"Date: 2011-09
Topic: **UPDATED Sep. 3rd** Improved Phoenix miner -- new features!
### Original post:
I like the --disable-redraw in concept, but it causes a new line with status information to be written every second (which is just as much noise in a log file). Any chance to add an additional option to control how often a status line is output when in --disable-redraw mode?

### Reply 1:
done. you'll have to get a copy of the latest revision from the repository. use --refresh-rate or -r <value> to override the default.-aldiyen

### Reply 2:
On lastest phoenix had very serious issues with LP and empty queue on ars pool. Tried yours from yesterday and the stales still about the same (maybe location and ping), but the other problems mentioned before are solved, no more empty queue .Thumbs up!

",[]
23068,"Date: 2019-09
Topic: My T17 is no longer responding
### Original post:
my T17 of just a few months stopped responding today around 130pm EST. I went to check on it when I got home, it had the fault light on. First, I turned off the power, check the outlets, the ethernet cable, after about 5 minutes, I turned the power back on. Miner powered on but the ""normal"" light was not lit but neither was the ""fault"" and I could not log into it via the ip address. Second, I tried a known working ethernet cable from one of my other miners that was visible on network. Did a restart of the miner, waited 10 minutes and nope could not see the miner on the network. So, I put the ethernet cables back to original placement.Third, I did the reset process. waited about 10 minutes and tried to log into it via ip address - still nothing. So, just if for some odd reason it was given a new IP address, I rescanned my network and nope no new devices and no new ip addresses assigned.Fourth, now checking to see if it is still under warranty. Got this message from Bitmain site ""Equipment warranty period 109 days remaining.""So, I guess I am contacting them to send it back. Sucks to have that down time though.

### Reply 1:
I purchased a psu from them just in case.Try one more thing make sure both power cables work with 220 or so. And make sure both power cables are fully plugged in. The controller does not work with a loose power cable.

### Reply 2:
I did check the cables and their power being supplied - thanks to your help a few months back on how to set up my miners to be read with the killawatt meter - I did each leg and that was fine as well.I will give it one more shot in the morning before I contact Bitmain for a warranty request.Update: it fired up this morning and after almost 10 minutes it showed up in AM software and is hashing at 40.72 Th/sSo no need to send it in just yet - but I will be watching it.

","[
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    ""hardware_name"": ""ethernet cable"",
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    ""hardware_name"": ""psu"",
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    ""hardware_name"": ""power cables"",
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]"
22344,"Date: 2018-02
Topic: [Solved] Antminer S9 won't show anything in Miner status Hardware,BitMiner  Ver
### Original post:
Using the BitmainTool app I accidentally saved 637.5 freq to 1 of my miners and they would not show anything in the Miner status page for over an hour. I loaded the latest firmware back onto them as they had that version before and still nothing.. BitmainTool says now failed to connect.. Please help.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 <rest of post truncated>

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]"
22740,"Date: 2018-09
Topic: [Video] Tear down/ Component replacement Avalon Miner 841
### Original post:
Nice job of troubleshooting.

### Reply 1:
Thanks,If you don't mind I plan to link your post on voltage adjustments in the second post. I'm just waiting on a little more information so people aren't just blindly playing around with the settings.Thanks for those tests by the way, otherwise I wouldn't be running mine at the moment.

### Reply 2:
They have helped a lot of people .I have to say mine have run in the solar array with air cooling and outside temps of 97fThey can survive the heat pretty well

### Reply 3:
Nice guide!!! The most important part people need to see is, Canaan's superior customer support. Not only are they providing ""in house"" repairs, they are also implementing Repair Technician training abroad. This will cast a very big net of customer support, and improve customer ""downtime"", by putting repair services closer to the customer's country of origin. Kudos, to Canaan, and everyone involved in this helpful service!!!

### Reply 4:
Yeah the few days I was able to run everything so far the temps were hot, but with those voltage settings the machine kept chugging along. Thanks I'm glad you like it. They really are a cut above the rest. Also if my video shows anything it's that they have built these machines in a way where anyone with the confidence and space can perform there own repairs

### Reply 5:
I cant help it, it was driving me crazy a few minutes into the video when you kept calling everything bolts when there isnt a single bolt on the unit.<link>

### Reply 6:
No worries, I'm amazed it hadn't been called out before. I actually considered getting rid of the audio as it bothered me; just a slip I hadn't realised until I was editing it.In the end I just left it there as it still gets the point across.

### Reply 7:
If looking for studio-quality editing I highly recommend Sony Vegas Movie Studio HD Platinum. You can often find the not-latest versions for around $100. Phenomenal program that does all you could ever want.

### Reply 8:
I do all my you tube mining videos raw with no edits.Many times I interchange cpu gpu psu while speaking on my gpu builds.

### Reply 9:
I meant it in fun, I should have probably added that the overall content of the video is quite good, thank you for making it!

### Reply 10:
I have enjoyed seeing the inside of your garage many times I'm pretty sure I've seen most of them more than once. They've always been a great resource.I think the raw footage was somewhere around 50 minutes. Luckily most of the rambling was during the repetitive screw removal sections.

### Reply 11:
No offence taken, glad you liked it.Thanks. I think I'm going to try and keep it fairly straightforward. I know I barely tapped the features available for this video, I might play around with it in my downtime just to see if I can enhance the troubleshooting visually.

### Reply 12:
Reserved for edits and additions.EditsJuly 31 - Added screenshots, Typos and phrasingAugust 10 - Added identifying PMU board and image

### Reply 13:
Linked here is a video that will show you the steps required to replace any component of you Avalon 841. In reality their designs are so similar, that it is good for all models starting from the 721 series. Feel free to ignore the guy in the video calling it an 821 . The outer shell has an 821 label on it, and I didn't notice the difference until my final repair. Video Thanks to Steven Mosher with Canaan for giving me the opportunity. It was simple I was sent an assembled unit that was non-functioning; and was tasked with identifying the issue and performing repairs. I was provided with an After Sales Support Engineer contact from Canaan, Yuxing Wei. I was able to update Yuxing on what I thought was the issue and how I was going to proceed; he also confirmed with me when I had completed the repairs. Shipment Contents1 - Avalon 841 Miner- non functioning (wrapped in an 821 outer shell)1 - 1600W Sorcerer Power Supply1 - Canaan controller - This package includes 4 X Auc3 converters and 5 Micro USB cables4 - Hashboards with thermal paste pre applied2 - PMU boards - Due to the connections these are side specific, so be sure to identify the faulty board properly1 - Control boardLink to T<rest of post truncated>

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    ""hardware_name"": ""solar array"",
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    ""hardware_name"": ""1600W Sorcerer Power Supply"",
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    ""hardware_name"": ""Canaan controller"",
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    ""hardware_name"": ""Auc3 converters"",
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    ""hardware_name"": ""Micro USB cables"",
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    ""hardware_name"": ""Hashboards"",
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    ""hardware_name"": ""PMU boards"",
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    ""hardware_name"": ""Control board"",
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    ""hardware_name"": ""cpu"",
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    ""hardware_name"": ""gpu"",
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11885,"Date: 2012-05
Topic: ""Drop-in"" miner for Mac OS X (10.6 and 10.7)?
### Original post:
Hello forum,Can anyone recommend a ""drop-in"" mining application for Mac OS X that isn't horribly outdated? By drop-in, I mean a compiled binary. There used to be Diablominer and it worked, but isn't there something a little more modern?

### Reply 1:
Modern? Are you looking for specific features or a UI, asking because DiabloMiner is by no means outdated and is kept up with all of the latest optimizations, etc..

### Reply 2:
Are you okay with command line/shell/terminal (I don't know what you Mac people call it) miners?

### Reply 3:
It sure is, but it would require compilation now, wouldnt it?

### Reply 4:
Perfectly fine.

### Reply 5:
Phoenix should run fine, though you'll need to install Python. If that doesn't appeal, there's a packaged Mac frontend for DiabloMiner here, though it's somewhat out of date.

### Reply 6:
just what i was looking for, thanks!

### Reply 7:
The BitMinter miner also works fine on Macs. As long as you have Java installed, you just click on the webpage and off it goes.

### Reply 8:
No, it's a Java app and Diablo compiles it regularly, just download Java binary and run it...

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11608,"Date: 2011-08
Topic: Why is Ufasoft CPU miner 3x faster than the other CPU miners?
### Original post:
I've been wondering this. It can't be doing something magical. I've looked at the code, the optimized sha256 stuff is easy enough to extract out, why hasn't someone included it in the other CPU miners (cgminer/etc) to bring their performance more in line with Ufasoft's?

### Reply 1:
This factor is about as much as you can get with handcoding SIMD and pipeline optimizations, so I'll guess that what it is.

### Reply 2:
There are already some forks of cpuminer which integrated the algorithm from ufasoft cpu miner. Check github.com for them.

### Reply 3:
It's optimized speciffically for intel processors using sse2 last i ran it on an athlon it cranked out half what i expected.

### Reply 4:
That's what I was looking for. I suspected that but wanted confirmation. I don't have an AMD proc to test on - what is the perf you get out of ufasoft on AMD?

### Reply 5:
a few hundred kh on the amd chips i have even my atom 330 outruns them at 1.6-2.2mh

### Reply 6:
Wow - ok thanks. Which CPU miner would you use then (don't know if you CPU or GPU mine, but assuming CPU - is there one that has performed best for you?)

### Reply 7:
Because CPU miners already left

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    ""hardware_name"": ""cpuminer"",
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  },
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    ""hardware_name"": ""intel processors"",
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    ""hardware_name"": ""athlon"",
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    ""hardware_name"": ""AMD proc"",
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    ""hardware_name"": ""amd chips"",
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    ""hardware_name"": ""atom 330"",
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10858,"Date: 2019-11
Topic: S17 PRO REVIEW - FROM CARGOBER
### Original post:
Just got my s17 Pro units today all 7 arrived in good condition from fedexonly have the power in my garage for 2 units to run at a timei might go get another breaker so i can run these for testing over the thanks giving break- weekend, since its raining in so cal it should be nice and cold .well here is what you came to see , they are smaller then i thought and the loudest part is the small fans on the power supply units .

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10911,"Date: 2020-12
Topic: HashFast announces specs for new ASIC: 400GH/s
### Original post:
Hi Everyone,I am pleased to announce some specs for our ASIC mining chip.This is a statement from Uniquify Inc, one of the world's leading ASIC design firms. They have done the physical design of our chip.Subscribe to our website for product details as they come out, or hit me up directly with <truncated> <truncated>

### Reply 1:
More detailed chip specs please?

### Reply 2:
Details, details. And proof.

### Reply 3:
Letter seems nice, but... can't you get Obama to ""approve this message""?

### Reply 4:
So this would be John Skrodenis of <truncated>

### Reply 5:
Yes - that's John.

### Reply 6:
looking forward to seeing the chip specs

### Reply 7:
can I come visit tomorrow? since I am 5 min from your location,

### Reply 8:
And this is you; <truncated> previously read your bettering Bitcoin article published in The Finacial Cryptography Journal with Stanford's Robotics. If other's here would read it, it would certainly raise the level of aptitude within this forum. In any case, looking forward to seeing more of what you're planning. You certainly have the background for this...Good luck.

### Reply 9:
That's possible. Hit me up privately...

### Reply 10:
Hi John,Welcome to the boards, we need more players in this game. I look forward to specs on your miners and more information on your business model.

### Reply 11:
I agree, and that's why it was an easy decision to work for him when he called. here are some more links regarding Simon:Simons paper: <link> which is the second reference here btw: <link> Barbers Profile at PARC: <link>

### Reply 12:
Very <truncated> looks like it has the guns to undertake this.

### Reply 13:
So... pricing?

### Reply 14:
More details and proof will be coming, this is just a start

### Reply 15:
More to the point who's financing? As you have started without requiring pre-order cash to cover NRE...

### Reply 16:
Thanks Btceic! More Specs will be coming out soon.Our business model is fairly simple: we are going to produce and sell the best possible mining gear, with a well oiled supply chain.John

### Reply 17:
Just hope they Don't take pre orders like the others. Almost all the One's that take pre orders are a Big dis-graced to the bitcoin community. Please don't take our hard earn money to finance your ventures. They are local financial institutions go look for them or used your own hard earn money and take the risks. When your stocks are available we will happily buy from you.

### Reply 18:
oh look, another asic scamBe sure to get your orders inShipping in ""two weeks"" i bet

### Reply 19:
Errr...we're talking millions.

### Reply 20:
Most will avoid pre order at all costs , looks what butterfly and avalon did if Escrow is provided some may take the risks or pay with paypal to have some degree of protection

### Reply 21:
seems like it's becoming China Vs US with Europe somewhere in 3rd

### Reply 22:
The letter says they'll have finished chips in October. So delivery to customers in November?

### Reply 23:
so one chip will hash at 400gigahash/sec?how you ll cool it? with a/c?:0)

### Reply 24:
So, speculation time, since we have only a little to go on (might be fun, right?).Anyone else notice that they said a 400GH/s chip? That's 4X faster than the highest we have seen predicted from any other competitor.We know nothing about power draw, etc. etc., but this would make possible a multi-TH single mining machine/rig. If this holds true, IMHO, then this chip would be the first true Gen 3 ASIC out there. Truly an order of magnitude jump in performance over the competition.It's exciting to speculate, no?

### Reply 25:
Yes, they are. But if their chip design firm is to be taken at face value, a chip which provides 400 GH has, without pricing the enabling hardware, an initial retail value of no less than USD 5 to 7 thousand each.How many do you think they could sell at that price point, even in the autumn post KnC, post bitfury, post Avalon DIY? Or alternatively, if their business model were to turn inward, what kind of market force could they become with ability to maintain network share at that rate? Might that potentially be an attractive investment at some terms?

### Reply 26:
With due respect to your observation, that's not the only way to look at the evolution here. First we had entrepreneurs who brought out ""least common denominator"" chips through trusted youthful and professional relationships and the entre' to manufacturing that brought. Due to that manufacturing access as much as anything, those teams were based in the PRC.Then we have seen entrepreneurs who have been able to either design themselves, or enlist the interest and stakes of those who can. Both of those groups are European based, and their products are a clear step above the first.Now comes a known, credible theoretician / practitioner who has the ability to engage competent design talent, build a company, and plan <rest of thread truncated>
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13957,"Date: 2011-05
Topic: Is Slushes Pool Down?
### Original post:
I got kicked off. Anyone else?c-rock

### Reply 1:
Yeah, it would seem so.

### Reply 2:
Yes, and it's been flakey for a few hours now. A lot of stale requests and RPC timeouts.

### Reply 3:
it's been that way for the entire day it seems. I dropped out a many many hours ago when the symtoms started.

### Reply 4:
I have been having issues all day - works good one minute, not so much the next, but a minute later is good again. I am still seeing this, anyone else?

### Reply 5:
Yes, I jumped ship about 9 Hrs ago.

### Reply 6:
I'd rather not have to reconfigure all my workers, so I am willing to stick it out a bit but just wondering if maybe I have a problem or if it's the pool. I.e. Do I have something that needs to be fixed or should I just be patient while someone else fixes something that needs to be fixed?

### Reply 7:
I don't believe there is anything you can do on your side. It appears to be a server side issue.

### Reply 8:
The statistics page confirms it: 43.976 Ghash/sIt was just under 300 Ghash/s yesterday

### Reply 9:
BitcoinPool is up and functioning, accepting new users and working wonderfully.We support:NO FEESEmail notificationsLong PollingTransparent StatsCustom Signature ImagesJSON-RPC API Stats ...and more! JOIN NOW: <link>

### Reply 10:
Classy post or not, we still provide a needed service and charge considerably less (read: nothing) to do so compared to the competition.

### Reply 11:
We need more pools not less. Deepbit taking over 50% of the network proves we do.

### Reply 12:
better than having a pool that has >50% of the hashing power.

### Reply 13:
Slush just sent payment.

",[]
8936,"Date: 2015-03
Topic: List of AMT (Advanced Mining Technology/Technologies) seeking immediate refunds.
### Original post:
Due to AMT bitcoin miners being DOA, I will maintain a list of all those seeking immediate refunds from AMT a.k.a. Advanced Mining Technology a.k.a. Advanced Mining Technologies, of which Joshua Zipkin is its CEO.

### Reply 1:
Official list of those seeking a refund from AMT, of which Joshua Zipkin/Josh Zipkin is its CEO.

### Reply 2:
Hello,Can you advise how can i get the refund? AMT are ignoring my emails....

### Reply 3:
Go to court because scammer Joshua Zipkin will not refund you!

### Reply 4:
We already are certain its not happening. It's funny he makes appearances all over the world. EXCEPT in Vegas in the USA, where he is likley wanted for felonies as well as the various lawsuits pending against him or so I hear. He has made the claim he will be paying us all refunds....we will see. Until it happens the constant drumbeat of pissed off customers will be necessary. He will have to deal with all that, might be why his so called 0.09W/GHs miners are not selling Note he openly advertised it there. Proof is in the pudding...and the video, funny how he falsely advertises that probably claim he came in 3rd on that too #ASKFTC

### Reply 5:
order #610 for $5,959.00 from Nov.11 last year has not been refunded and no miner was EVER delivered. AMT is the scammiest business out there. They have BFL beat hands down with the worst customer service on earth.

### Reply 6:
I too would love a refund of my 11.1k.

### Reply 7:
All miners were ordered in Feb, with plenty of email ""promises"" for a specific delivery date, just like everyone else. Parts were supposedly in hand just waiting to put them all together. 2 x 3.2 TH/s Miners - $29,998 + $160 Shipping Total refund owed: $30,158.002 x 1.2 TH/s Miners - $11,198 + $160 Shipping Total refund owed: $11,358.00Total Refund Amount Owed: $41,516.00 , plus interest, legal fees, and other damages to be determined once it goes to court (and it will go to court)

### Reply 8:
AMT, Please kindly make my refund settle asap,totally amount is US(645#for $ 5155+#962 for $6089)= US$11244. again I need this money for my new born.Thanks.

### Reply 9:
<link> lab start refund now.where is my money AMT?Cash Refunds Initiated; Refund Priority Temporarily ModifiedPayment of bitcoin refunds continues and we have also started paying out cash refunds, but we are making a temporary change in our refund policy. In order to get refunds to the maximum number of people in the shortest time possible, we have made the decision to refund all orders less than $1,000 at the front of the refund queue. Once they are complete (estimated to be within the month of March), we will resume making refunds in the order they were received.

### Reply 10:
We need to keep the attention on this until both ""Joshua Zipkin"" and ""Tyler Lummis"" aka ""Jim Brown"" are in prison for fraud.

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    ""hardware_name"": ""0.09W/GHs miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2 x 3.2 TH/s Miners"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""2 x 1.2 TH/s Miners"",
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22048,"Date: 2017-12
Topic: [S9] brand new S9 not working
### Original post:
Hello friends , as the luckiest guy (<-joke) i got 1 S9 today , just plug it (ever got antminers) enjoy the noise of fans and then nothing in miner statut ... the miner fans is go slowly like normal way , the green light is on (normal) and then fans gone crazy again , and again ....like restart ... very unhappy, i feel sick ... here screenshere logsCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone:<rest of post truncated>

### Reply 1:
Look BMminer not starting.Will try to upgrade s9 all from august.Hope error from asic 7 is ok

### Reply 2:
Relax bro, I'm certain you have just configured the miner wrong.If you want to test worker settings you could try to mine for a second on my account.Pool: <truncated> <truncated> xKeep in mind: You need to wait for about 10-20 minutes before the S9 will actually start working and show data under ""Miner status"" page.Refresh the miner status page every minute until you start seeing updates in the ""Miner status"" page.When you see data on the status page, and Pool = Alive, then you know it was just a miner config error, and you can configure it to mine on your own account!The errors in the kernel log you are seeing is NORMAL! Cheers!

### Reply 3:
Thanks for answer , will try but i let the antminer settings at 1st and wasnt working to.other antminer i have (not sha256) dont take 20min to start and this one restart fewlyThink i will had cgminer release then

### Reply 4:
Just try it, I had the same issue with my S9 I got last week

### Reply 5:
Feel better will try later , thanks a lot my friendedit , was good with your settings ... so much wait for see it , and damm the noise ....i have to learn how to remove fan check to get silents ones

### Reply 6:
You purchased an industrial miner, it needs to make that kind of noise to stay cool. You put 'silent' fans on it and it will either not run at all from lack of fan RPM or it will overheat from lack of fan output.

### Reply 7:
Did you put your own pool and username back in?You do realize that you are giving your hashes to cryptotore. Right?

### Reply 8:
Lol thanks im not so newbie And there is better 6000rpm fans , the liwer frequency and voltage help for low temp

### Reply 9:
Dude, learn how to post in a Forum! At the top look for a formatting icon that looks like # that is for posting code & logs. Turns your text wall into a much more tolerable Code:Chain:7 temp offset=0Chain:7 base freq=687Asic[ 0]:675Asic[ 1]:675 Asic[ 2]:675 Asic[ 3]:675 Asic[ 4]:675 Asic[ 5]:675 Asic[ 6]:675 Detect a bad chip=7 on chain[7], fixed to 400MAsic[ 7]:687 Asic[ 8]:675Asic[ 9]:675 Detect a bad chip=10 on chain[7], fixed to 400MAsic[10]:687 Asic[11]:675 Asic[12]:675 Asic[13]:675 Asic[14]:675 Detect a bad chip=15 on chain[7], fixed to 400MAsic[15]:687 <truncated> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000<rest of post truncated>

### Reply 10:
So for some reason when I point my S9 at your pool it works, but not when I point it at Antpool? Why is that?

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    ""hardware_name"": ""BMminer"",
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16654,"Date: 2011-06
Topic: hundreds of CPUs online - Any worth?
### Original post:
We got over 100 Core2Duo servers with CPU >80% idle, and a few Core2Quad xeons with CPUs idle too.Are they any worth on mining?Quick estimates based on testing on a few servers:- Core2Quad ~6000-8800khash/s- Core2Duo ~2500khash/sI've been considering this for a long time but never had gotten around to it, until finally today reading up on pooled mining etc. i gave it a try So if we put 100 Core2Duo nodes crunching, worth anything?Quick calc: <truncated> CPUs really THAT slow on this type of thing? Someone claimed 2x5830 can do 300Mhash/s, so is it really so that putting these 100 nodes crunching would be able to just barely crank out 2x5830 hashes? :Oi'm using jgarzik's and compared 4way to default algos too.

### Reply 1:
Yes, they are THAT slow on Bitcoin calculations.

### Reply 2:
a single overclocked 5830 can get over 300 mhash/s

### Reply 3:
So i'm guessing 300mhash/s takes a year to make even 200?

### Reply 4:
No it'll be much less than a year. But yea CPU mining is pointless unless you have free electricity. And even then the returns are still small...

### Reply 5:
Well, in this case the cpu cycles would be ""free"", it's just matter of setting them up (Any pooler has API for adding new worker?).What kind of revenue can one expect with 300mhash/s per month nowadays?

### Reply 6:
It's basically a massive waste of electricity between the power being sucked down by the processors and the air conditioning that you need to cool down the place. Unless you live somewhere where it's freezing cold right now and could make some use of all that heat I don't think it makes sense to run 100 computers at full throttle (likely ~20000 watts) to generate the same amount of bitcoins as a single 300 watt video card.BTW, people have been fired and arrested before for using work computers for distributed computing so definitely make sure your company is actually OK with this.<link>

### Reply 7:
These nodes are at a DC and utilized for hosting, but their idle CPU cycles are going 100% to waste Seriously, if i swapped all of them to ATOMs no one would notice - that's how little those nodes needs CPU. It's all network, ram and storage i/o.But you are right, it's probably not worth it even to set it all up.I do however happen to have about 10 un-used computers with atleast 1xPCI-E x16 lying around ... But what is worth say 6870 or 5870 in BTC made in say slush's pool per week right now?

### Reply 8:
Roughly $150-$200 a month depending on market fluctuations.

### Reply 9:
Thank you So that would mean 1.5$ per node per month, with luck.I guess not really worth the effort to setup all nodes with miner, even tho it does not add any extra costs for me to do so.

### Reply 10:
Idle CPUs use far less electricity than CPUs running on full load.So yes, it might actually cause quite a bump in the electric consumption of both cooling and CPUs.

### Reply 11:
Why does everyone who has access to huge amounts of computing power seem to believe that processors at idle use the same amount of power as processors at full load?Makes me wonder how they climbed up the ladder in their company to have been given access to them in the first place.

### Reply 12:
i never said that nor make implication of such!I don't have to pay the electricity bill. Leased servers, you know.

### Reply 13:
Douche move, guy. Douche move.You sound whiney, presumptuous and in contempt for everything you don't have.Way to go.Implying the ""idiots"" with access to these machines couldn't possibly be as clever as you?... ""climbing a corporate ladder"" to get access to a PC lab, leased servers or a school network? How stupid can you be to make that claim?Better yet - how stupid can you be to think that a lot of us don't have pre-existing infrastructure?... I can see why you're not on the same corporate ladder rung as the rest of us idiots.

### Reply 14:
The datacenters I am familiar with in the US, you contract for an amount of power/cooling, not pay per Kw/H. In my case, the company I work for is paying for 50Kw of power for 10 racks. Right now we are only using 16Kw.The datacenter has allocated the power and cooling for us to be using the full 50Kw, so the extra 35kw we are paying for but not using is at our loss, we pay the bill every month even if we dont use it.

### Reply 15:
You're sure making a lot of assumptions based on one post... who's the douche?And the reason I made that post is because I'm tired of seeing all these posts (at least a half-dozen) from people who have access to large farms of computers and don't realize that running a CPU-Miner on each box will suck down more juice than if they were to just idle all night. If the OP is not in this category than I apologize to him.

### Reply 16:
There is a reason i got access to a big amount of servers and you don't. It's called business sense, knowing what's what.for some people it really doesn't cost more to have 100% used or 0%<rest of thread truncated>
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11748,"Date: 2012-01
Topic: CGMINER doesn't find more than one GPU
### Original post:
Hi,I just had an annoying multi-hour debugging session, trying to figure out why cgminer thinks there's only one GPU in my (Debian Testing) system.$ aticonfig --list-ad* 0. 06:00.0 ATI Radeon HD 5800 Series 1. 07:00.0 ATI Radeon HD 5800 Series 2. 08:00.0 ATI Radeon HD 5450 Turns out that AMD is being stupid. Again.OpenCL 1.1 AMD-APP-SDK-v2.4 (595.10) (don't remember where I downloaded it from): library works.OpenCL 1.2 AMD-APP (831.4) (available from <link> ) does NOT see more than one GPU.You can extract the build number etc. from the library with$ strings -a <truncated> | grep <truncated> if this has been mentioned before, but this thread is too long to scan everything.

### Reply 1:
Not at all. I think you may have discovered the cause of yet another random unexplained failure that has yet to be mentioned on this thread.

","[
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    ""hardware_name"": ""ATI Radeon HD 5800 Series"",
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    ""hardware_name"": ""ATI Radeon HD 5450"",
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]"
11106,"Date: 2022-02
Topic: Disconnecting from mining pool
### Original post:
Good dayAfter a while both my Avalon 1166 Pro 81TH disconnect from the slush pool server, reboot and reconnect automatically within 2-10 minutes; is this a normal occurrence? The miners are setup with a static IP address outside the DHCP range, are directly connected to the router via an ethernet cable and configured to connect to three different slush pool servers. Could somebody give me a lead as to why they are disconnecting?Thank you

### Reply 1:
Does it get too hot?It would help us if you can post the log here. (use code tag, it's the # button)

### Reply 2:
Thank you for responding, would you like to see the log from right after they disconnect or any other time?

### Reply 3:
set it to normal speed you should do around 68-70 thsee if it runs better.if it does it may need more cooling to do the 81th.

### Reply 4:
Why not post the API logs at the current time?If you still keep disconnecting automatically right now you can copy the whole logs and let's see if we can find the reason under the logs. Or you can troubleshoot it with your own download the troubleshooting guide from this link below- <link> open it with chrome or and PDF viewer scroll down the bottom and read ""APPENDIX 4 Log Page main parameter"" So that you know how to read the logs.

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10064,"Date: 2016-11
Topic: Defective Antminer S3
### Original post:
is there anybody who can help me?.. I have a defective antminer S3 I can access to the web interface.. play with config and see logs but the fan dont spin it get 0 hash red LED is on I got other miner I compare every config and log I found this in the defective one..Code:[ 6.340000] hub 1-1:1.0: 2 ports detected[ 6.630000] usb 1-1.1: new full-speed USB device number 3 using ehci-platform[ 6.730000] usb 1-1.1: device descriptor read/64, error -32[ 6.920000] usb 1-1.1: device descriptor read/64, error -32[ 7.110000] usb 1-1.1: new full-speed USB device number 4 using ehci-platform[ 7.210000] usb 1-1.1: device descriptor read/64, error -32[ 7.400000] usb 1-1.1: device descriptor read/64, error -32[ 7.590000] usb 1-1.1: new full-speed USB device number 5 using ehci-platform[ 8.010000] usb 1-1.1: device not accepting address 5, error -32[ 8.110000] usb 1-1.1: new full-speed USB device number 6 using ehci-platform[ 8.530000] usb 1-1.1: device not accepting address 6, error -32[ 8.530000] hub 1-1:1.0: unable to enumerate USB device on port 1

### Reply 1:
Antminer S3 doesn't have anything using USB.

### Reply 2:
I thought the LAN adapter was USB.

### Reply 3:
but even if its a lan adaptor I have access to the webgui and I also tried a hard reset and other miners does not have this usb error..

### Reply 4:
I exchange the controller board with another miner and the problem follow the controller..

### Reply 5:
Have you considered just replacing it with an S5? Given how cheap the S5's are now, considerably higher <truncated> etc. I personally wouldn't be willing to invest any time in diagnosing or replacing parts on an S3. Even with free electricity, you are better off with S5's. Just my opinion before you invest too much time/money into it.

### Reply 6:
if I have to invest money on it I will keep it for parts.. I use it just to heat my house.. using this and a wood stove when too cold..

### Reply 7:
<link>

### Reply 8:
I found this in the defective <truncated> ls001 <truncated> ls0and in a working unit it look like <truncated> ls001 002 <truncated> ls0 1anybody know how to fix this?..

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15749,"Date: 2016-05
Topic: How to make a RPi mining pool?
### Original post:
What exactly do I need to do to make a mining pool with my Raspberry Pi 2? I am looking for an easy to setup software to get everything up and running. A Bitcoin mining pool would be great, but if there is also one for alt coins, then please let me know where or how I could get started.

### Reply 1:
Setting up a mining pool on Pi2 or setting up for example BGFminer on Pi2 to miner with for example Antimner U3 via USB.I dont know anyone that is running a mining pool on a Pi. Bitcoin/Altcoin nodes yes but pool with i dont think so. To setup a mining pool get a proper server , plan your pool operation, it would also help if you wrote how many miners you want to have connecting or you just want a pool for yourself, if its a solo case than you dont need a pool and jest setup solo mining.But do not that there is a tinny chance you will solve a block on your own in maybe 2000 years Have fun!

### Reply 2:
Thanks for your reply. After some research, I have just decided to setup a mining rig instead with my RPi 2 with a couple of antminers connected to it via usb. Then I would set up a web mining dashboard to monitor my mining gear each day. I have found this very useful. You can check it out here: <link>

### Reply 3:
You didn't mention the kind of Antminer's, but I would also encourage you to consider one or more of the Gecko Science Compac miners. Very adjustable, way faster than and Antminer U2, and very stable. Antminer U3's have a poor reputation for stability. Just my two cents.

### Reply 4:
Sorry, I forgot to mention which I would use for this setup. Now that you mention it, I will connect 1 Antminer S3 + Antminer U2. Also, the Gecko Science Compac miners look very interesting to use for mi RPis. I'll take a look into it. Thank you for your reply.

### Reply 5:
you should either look for lower priced electricity, or a model of them with lower power consumption; such as S7, however if you bought it early, then you would probably need a few more months to break even. as well as using raspberry pi 3 instead of 2 if you wanna create a rig once again using them.using U2 is not the best choice AFAIK, U3 is much better.

### Reply 6:
Thanks for the advice. I am currently saving some money to get myself at least an S7 + RPi3 but in the meantime, I would just stake coins into my RPi as I think that I will earn a lot more with it than using my current mining setup. I think that I will leave the RPi2 24/7 just for this task.

","[
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13515,"Date: 2016-07
Topic: Bitcoin Mining Software for Windows
### Original post:
Hi to all, is there any LEGITIMATE Bitcoin Mining Software for Windows that can earn faster? P.S. Admin please remove this thread if it is not allowed here.

### Reply 1:
Mine faster not gonna happen unless you have the hash power in fact the new hard ware miners will get slower as the Difficulty Factor increases so that means you will need faster hardware over time the old ones will get slower and make less.Software really has nothing to do with how fast they mine unless it is poorly written for the hardware it is written for . tweaking the software makes it run better, use resources better,which in turn might appear to make it faster but not mine faster or faster, you can only go as fast as the hard ware allows. so that said : there is no such software yet . you need fast hard ware for the software to do it's job right .forgot don't be alarmed even if your fast hard ware seems slow, it's never fast enough.This may be the wrong place to post this but don't feel bad they put it in the right place if it is moved.

### Reply 2:
I've been using bfgminer for sha and cgminer for script for a while now and they work quite good without stopping and they're quite easy to use too

### Reply 3:
cgminer no longer supports script miners unless your using one of the forks or odder version they stopped support for script miners some time ago . bfg still supports both script and sha256 miners or bitcoin miners , but that all depends which one , CGminer only supports sha256 miners beyond cgnminer version 3.9 or so .

### Reply 4:
yeah i'm using a old version of cgminer

### Reply 5:
is gui miner is profitable??

### Reply 6:
There is no WIndows-based system that is even in the same ballpark as current or even 1-2 generations old ASIC miners for Bitcoin.The only question on using CPU or GPU hardware to mine Bitcoin is ""how much do you want to LOSE"" - even with free electric, your system will DIE before it pays for itself.

### Reply 7:
AFAIK, gui miner is a tool made to mine bitcoins with certain brands/types of GPU. There is no profit to be made with GPU or CPU mining bitcoins (sometimes you can cPU or GPU mine certain altcoins for a while and make a profit).As a small recap of this topic:CPU mining BTC with any type of hardware (be it your laptop, raspberry pi or a 256 core XEON server) will cost you more in power and hardware than you'll ever make in bitcoin (in most, if not all, cases you won't make enough coins to ask for a withdrawal from a mining pool... maybe if you have a bunch of 256 core XEON servers mining 24/7 you can withdraw your coins, i didn't do the math)GPU mining BTC won't make you anything either (look here <link> The best graphic cards will have a much lower hashrate than a $25 geckoscience usb stick.the only way to make bitcoins, is by using an ASIC. The diff rose pretty high lately, so even older ASIC's will not be good enough... you need a lot of hashrate, preferably with low power consumtion in order to mine bitcoins (<link> does not matter which piece of software you use to manage your ASIC (a lot of asics have a web interface where you just enter your mining pool, and that's it... you <rest of post truncated>

### Reply 8:
But ASIC is pretty expensive and with the bitcoin halving coming soon...

### Reply 9:
its getting harder and more expensive to even make roi on asics

### Reply 10:
Its very difficult to mine Bitcoins for a individual dear

### Reply 11:
bitcoin mining at home and with simple pc or notebook is very hard, you can't get anything. It's boring without special hardware, but if you are searching software, than write here are you mining with cpu or gpu. Some softwares are good for cpu and some for gpu

### Reply 12:
How about Minera.

### Reply 13:
I Use Minera, it's the best thing that i have ever use! Stable and powerful

### Reply 14:
my laptop gets hotter when using minergate (window

### Reply 15:
im using minergate its good software for mining,but im affraid my laptop get oveheated

### Reply 16:
Guys, any other Miner besides Minera and MinerGate? And what if i run miners in like 10 pc's, it will be nice profits but i don't know if i get banned or no..

### Reply 17:
you need to lessen the cores you mine with leave one open for windows it will run coolerwith 3 laptops and 2 tablets you can make some money but its a slow gothey sent me the info to actually mine on the servers using my s5 but i had mixed results using it

### Reply 18:
I used miner gate in the past and you get coins really slow.. also you can add a GPU and mine with it and it would be a bit better

### Reply 19:
Individual mining is challenging

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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2 tablets"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  }
]"
16263,"Date: 2022-05
Topic: ? Hight electricity and Miner industry in USA
### Original post:
Just wanna know what you guys think about the price of electricity in USA and the miner industry . As the price of electricity is going up due the crises due to the war ... I wonder how this will efect the new mining Industry in USA

### Reply 1:
Plenty of discussion about that in existing threads...Short summary: Some states have excellent pricing, others do not. That will not change aside from possibly a few more states courting miners like Oklahoma is.

### Reply 2:
The price of commercial power at 1 MW of load (300 S19/M30S ASICs) on publicly available tariffs in competitive markets is 5-10 in 95% of the cities in the U.S. The remaining 5% of the country has power cheaper or more expensive than that. States like Washington, New York or Texas have rates on the lower end of that range, while CA/NJ/FL are on the upper end.Mega miners usually sign special deals where they can buy bulk power directly from generation stations for as little as 3-4 cents. The cheapest source is probably flared natural gas. Sadly, most of us are stuck with using grid power. I can speak to North Texas in particular: the rate at 1MW primary on ONCOR was ~5.7 over the past 12 months with 96% uptime (other utilities are similar). In eastern Pennsylvania it is 7-8.5.The delivery charge is usually 1-2 of the bill for most utilities, and usually goes down as you use more power and/or buy your own transformers. The energy charge is typically 3-6 on the open market.Rates can vary tremendously in different parts of each state. Upstate New York has cheap power (4-6), but Long Island is a ridiculous 12-15. You also need to watch out for smaller utility companies in non-competitiv<rest of post truncated>

### Reply 3:
I see a very expensive price for electricity in the us if these figures are correct.In the United States, it is unprofitable to engage in mining in a private house, and to get better rates, you need to be a large miner.<link>

### Reply 4:
These kinds of comparison websites can be really inaccurate. The worst one is <truncated> Commercial tariffs are structured completely different from residential tariffs. Most of the electric bill for miners will be the energy, not the delivery unlike for houses. Yes, states with cheaper residential rates tend to have cheap commercial rates, but people really need to look at the 100-page tariffs.

### Reply 5:
Any good website to check electricity prices for industrial use

### Reply 6:
There are no good websites. The only way to find out is to find the public utility tariff, put those numbers into a spreadsheet, then call the utility to confirm.

","[
  {
    ""hardware_name"": ""S19/M30S ASICs"",
    ""hardware_is_owned"": false
  }
]"
23680,"Date: 2021-09
Topic: Bitcoin mining Infrastructure
### Original post:
I need someone who is knowledgeable about bitcoin mining infrastructure and how to set up one including a mock-up simulation of the mining hardware and software needed.The company would like to start out in Bitcoin mining and would like to the steps involved including setting up the bitcoin core daemon and connecting the ASCIS together and controlling them. Any other information about the company needs can be provided at will.Please reply with any information you need from the company to help assist in determining the cost of the job.

### Reply 1:
ASIC miner doesn't need any software it's a plug-and-play, you just need to set up the pool you like.I hope that you read the sticky thread under this section before you post. Read this First time/Small miner reference for getting started.It should answer all of your needs.

### Reply 2:
You don't need that for mining, if you want to combine the ""workload"" or the ""bandwidth"" of all miners then you are going to need a ""mining proxy"" which has nothing to do with Bitcoind as far as your mining operation is concerned.Where are you located? and What is the size of this operation? setting up 50 miners is not the same as setting up 500 of them, you need to be specific on what you are planning to do, or else, nobody can point you in the right direction.

","[
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining proxy"",
    ""hardware_is_owned"": false
  }
]"
3837,"Date: 2015-03
Topic: OregonMines Group Buy $399 Colocated SP20s
### Original post:
Assuming this is legit, it seems like a possible alternative to Lee's S5 hosting deal in China, particularly for US based miners. The $399 price for an SP20 seems quite reasonable, and a <truncated> fee of $50 is a little high, but probably no worse than what it would cost to finish up at Lee' facility. Lee has a significantly better daily rate though. Could Oregon Mines set up one or two SP20's with the ""downclock rate"" (i.e. 180W on the 4 loops), and report what the hash rate is after several hours?

### Reply 1:
Apparently, Spoondolies are the most power dense and stable miners out there. However, I'm not sure if they'll develop new more energy efficient products so I'll probably wait to see that before I do any hosting.

### Reply 2:
Anyone here tried this out yet?

### Reply 3:
I think it's about the same at 0.10/kwh. But Lee said that once he sells a few more units, he will drop 10%. If you guys are able to get the rate down to $0.09/kwh this will be a much more attractive deal, I'd certainly be interested.

### Reply 4:
We can certainly lower the costs for bulk purchases 12+ units.

### Reply 5:
The shipping / termination fee includes, removing the unit, shipping the unit in the US as well as full shipping insurance. The price per KW/month is actually under Lee's, the SP20 uses more power and has a higher hashrate / downclocking can lower the hosting fee.I'll arrange the downclock testing for tomorrow and report back what it is averaging at the end of the day.

### Reply 6:
Credit Cards now accepted, include your payment method in your PM.

### Reply 7:
Would I have access to my miners? How long can someone keep a miner hosted there?Barbara

### Reply 8:
Normally changes to miners need to be made by emailing info (at) oregonmines.com . Response time is normally well under 24 hours.If you are purchasing a rack of units between 12-15, you can also purchase VPN access and make the changes yourself.

### Reply 9:
Be careful who you trust people. Your miners and BTC could vanish just as easily as Minersource's clients did. Warning to any newbs out there.

### Reply 10:
A side note, but is there some detailed writeup as to what happened with/at Minersource?EDIT: nevermind, found it here:<link>

### Reply 11:
On Sunday night we had a small networking issue that took down one of our tunnels. This was corrected yesterday afternoon those effected will receive an additional day of hosting for the trouble.Update: Free escrow with Credit Card processing, prices listed are the prices paid (wire transfer fees still apply).

","[
  {
    ""hardware_name"": ""SP20"",
    ""hardware_is_owned"": false
  }
]"
17013,"Date: 2012-01
Topic: Intel vs AMD
### Original post:
I know intel has better processors but have you guys noticed any difference when mining? I recently switched from intel to AMD and my hash dropped significantly. I used to get a stable 350K per card and now Im getting around 320K. Ive also noticed my hash goes up and down alot more than before. It drops to 270K often and even 20K before jumping back up to 320K. Ive also noticed its takes longer to get my hash up to 320K. On intel as soon as I launch the script its as max performance in like 2 seconds. But on AMD it drags and takes longer to peak. Probably around 20 seconds. The intel rig is quad core with 4gb ram. The AMD is single core with 1 gb ram. I know mining is GPU intensive but will having cheap equipment effect my mining performance? Single core and 1 gb ram is well below what windows needs to run smoothly. Its either that or intel chips and boards are so much better it effects hash rate. What do you guys think the problem is? My first AMD rig. Im not very impressed so far.

### Reply 1:
Obviously something's off as most dedicated bitcoin mining rigs are not only based on AMD processors but on the cheapest and weakest AMD cpus.Please double-check your bios settings on that AMD mobo, mayhap some elusive power-saving option remains switched on?You made sure Crossfire is turned off, right?Is that a windows-based rig? Which version of Windows? Make sure Aero interface is turned off, ok?What's the CPU usage? Idle and mining....or just make a clean Debian install...

### Reply 2:
I know most large scale mining rigs use cheap AMD equipment so thats why Im not sure what the problem is. I will take a look in the bios later today. I do not have CF enabled. Its not required and I hear it causes problems when mining. Im running windows 7. I have turned off all the flash visual features. I did notice a difference but the lack of performance remains. Im not sure what the cpu usage normally is I will check later. But I have noticed the system does lag. Just unzipping a zip folder shoots the cpu usage up to 100%. Im assuming dabian is a lunux based OS? I just tried ubuntu hoping for gains. The driver install is overly complicated. Theres no easy to click exe to install you have to write code just to install drivers. Same for poclbm script. When you click nothing happens gotta do more work around. I dont mind learning another OS if I will see noticeable gains but I dont want to read forums for hours just to install drivers either.

### Reply 3:
Hi!The following AMD doc say to use some gcc options to optimize the binaries:<link>I'm using the following options to mine my Litecoins (using cpuminer from ArtForz):CFLAGS = -mtune=amdfam10 -O3 -ffast-math -mabm -msse4a -pipeI do NOT have any Intel CPUs/hardware, because Intel send money to Israel to kill Palestinians. So, BOYCOTE ISRAEL!<link>

### Reply 4:
If CPU is too heavily loaded then GPU utilization decreases. I use GPUShark to check GPU utilization, I raise intensity until GPU is loaded 98%+.I had the same problem if I switched from 4core to single core and underclocked CPU to 600MHz. If you raise GPU utilization to 99% then the hashrate will recover

### Reply 5:
FWIW, the -mabm and -msse4a flags are covered by the -amdfam10 flag, as per the document you linked. I have used the following flags with gcc 4.5.3 and many apps, for example, cgminer. Whether these flags help, hurt, or do nothing is per case, sometimes these flags have no effect at all vs a minimal set. For example -mfpmath=both can often make floating point code faster on AMD, but it can also break the ATI video drivers if used for compiling the kernel.Big code, sometimes faster, sometimes not, sometimes broken. Works with cgminer:-O3 -march=amdfam10 <truncated> <truncated> <truncated> -fgcse-sm -fgcse-las -fgcse-after-reload -fweb -frename-registers <truncated> -mfpmath=both -ffast-math -funroll-loopsWorks with most things, often better: -O2 -march=amdfam10 <truncated> <truncated> <truncated> -fgcse-sm -fgcse-las -fgcse-after-reload -fweb -frename-registers <truncated> default flags I use, I'm running Gentoo linux so the system image I use is completely compiled from scratch. These work for compiling the linux kernel, glibc, and gcc 4.5.3 itself.-O2 -march=amdfam10 <truncated> <truncated> <truncated> probably ought to take a couple of these subjects elsewhere.

### Reply 6:
Did you install the chipset drivers and the rest of the myriad of drivers bundled with your mobo?I don't recommend you install manufacturer's utility programs but please make sure you have no missing drivers.Yeah, Debian is a Linux distro. Ubuntu is based on Debian, in fact.

### Reply 7:
I just checked my mining rig. CPU usage is around 40%. Memory 70%. I did not see anything in bios that seems like it would affect my GPU's. Any other ideas? Im using MSI 890FXA-GD70.

### Reply 8:
I turned on GPU usage in MSI afterburner and noticed its all over the place. It frequently drops to<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Intel processors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD processors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Intel rig quad core with 4gb ram"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD single core with 1 gb ram"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MSI 890FXA-GD70"",
    ""hardware_is_owned"": true
  }
]"
22507,"Date: 2018-03
Topic: How damaging is reversing the polarity on the S9 controller board?
### Original post:
I wish I didn't have to ask this question, but to what extent could this board have been damaged by reversing the 6-pin pcie power connection? Also, do you think the psu is toast or could it be salvaged by splicing the pcie?<link> note: This post was edited by frodocooper to remove inline image tags.

","[
  {
    ""hardware_name"": ""S9 controller board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6-pin pcie power connection"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  }
]"
9251,"Date: 2015-07
Topic: Antminer S5 - Cooling system power calculation
### Original post:
Dear miners,I've just got 100 Antminer S5 ASICs for my first mining rig!How much minimal cooling power (in cubic meters per hour) do I need to cool my rig?Help me to calculate cooling system power please!Best <truncated>

### Reply 1:
Afaik the S5 fan is around 200 CFM, so do the conversion and you're good to go and pull the correct formula

### Reply 2:
Cooling should be expressed in terms of BTU or tonage for cooling..... for instance 1kwh equals 3,412 BTU. This is the amount of cooling it would take to offset the additional heat load created by your mining equipment. It is the same as any other datacenter... how you cool the air is up to you. If the air coming in is cool enough then you just need to exhaust the heat from the miners and intake fresh air from outside. The amount should be calculated using outside ambient air temp and a bunch of other variables

### Reply 3:
On some website is said that the fan of s5 has around 100cfm. Are you sure with 200cfm? Thanks!

### Reply 4:
it is closer to 200 then 100. it is also nasty loud

### Reply 5:
Yes, ~200 at 4k.

### Reply 6:
This equals 339.80 cubic meters per hour (m3/h / flow rate)WOW!

### Reply 7:
You started wrong way. The correct way is, buy from Hashnest.Today you need ""only"" 150 BTC , to obtain 100 Antminer S5 hashing farm . There is no need for cables, power supplies and cooling. Everything is included in the price . Ready for mining after 72 hours from <truncated> your mine is already stillborn and do not return the money what you have to spend and you need to spend more.

### Reply 8:
I have started right way! I have much better electricity costs than Hashnest or any other cloud mining service!

### Reply 9:
If you're using mechanical air conditioning, assuming a SEER / CEER of 10, you end up burning about 30% of the power your miners are using at the wall to keep the room temperature the same as if they weren't running at all.Most current A/C units I've seen the last couple years are AT LEAST 10 SEER, many closer to 12 - which would work out to needing more like 25%.It's not a matter of the flow through the miners, it's a matter of removing the heat, if you're going for a 'datacenter' model.The Fan in the S5 is a Delta PWM model, given the RPM on it I'm CERTAIN that it's their ~200 cfm unit. The ""flow director"" fin design IIRC is PATENTED by Delta, and I've never seen a non-Delta fan use it.""Nasty"" loud is a matter for debate, they're NOT quiet but they're not much louder than a commmon room air fan at the same distance. They ARE higher pitched though, which might make them SEEM louder, but nowhere near as bad as the famed Delta 80mm 80CFM ""screamers"" or even the ""one step down"" 68CFM models I used to use on my Athlon XP machines (Alpha heatsinks, not the more-common but similar Swiftechs).

### Reply 10:
I use thisMaster BL88007.800 m/hwith Mitsubishi Electric S500 Inverter<link>

### Reply 11:
How many S5 do you have in the room?How big is your room (m3)?

### Reply 12:
You do not take into account the additional costs.You bought the wrong model for miners, at a higher price than those sold in six months ago.I still think that this is the wrong way to go.But this is your journey. Lots of luck with that!there was 17 x SP20 and 25 x S5

### Reply 13:
Room size isn't tha important.Flow design and rate is.When designing your farms, let cool air enter from below and extract heat from above. Go with the natural convection of heated air, and you should be alright. If in doubt, contact an engineer that knows about thermodynamics.

### Reply 14:
So you say he should have bought from Hashnest and paid ~$0.096/kWh, as opposed to likely paying half that electricity price, in order to save ""additional costs""? You may be right about the timing to buy S5's at a premium, but you are way off base thinking he'd be better off with a cloud mining service for 100 S5's. Anyone who is seriously looking at wiring in 60 kW of power is quite likely to get a rate better than $0.096/KwH, and the difference in price will more than make up for any additional costs. Hosting costs would be over $4,000 per month, as opposed to $3,066/month @ $0.07/kWh, $2,190/month @ $0.05/kWh, $1,752/month @ $0.04/kWh, etc.Anyone that actually suggests running a farm via cloud mining is either delusional or has something to gain from it.

### Reply 15:
How about ventilation?<link> if you really want to use an air <truncated> will do it for free better than you.

### Reply 16:
I've bought from hashnest over 300 x S5 . I earned from GHs sales and from mining. From mining it was profit 25 BTC I have taken out of its profits, and sold off.Not a bad investment if you earn 1,000 euros a <truncated> ..........Hashnest $0.096/kWhI do not believe, that it would be pay only half of that hashnest price - $0.043/kWhMy recommendation is , leave Chinese miners in China.S5 is not good farm miner. Most of them work wel<rest of thread truncated>
","[
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    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S5 fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Delta PWM model fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Master BL8800"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Mitsubishi Electric S500 Inverter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SP20"",
    ""hardware_is_owned"": true
  }
]"
17225,"Date: 2012-08
Topic: How To's and Guides Mega List
### Original post:
I hadn't thought of including pay-for material in the list.

### Reply 1:
It's free for now. You can always remove it if that changes.

### Reply 2:
List updated.

### Reply 3:
I see a lot of guides to linuxI wrote a guide to cgminer with win7 and .bat file<link> thats a help

### Reply 4:
Updated.You might want to put a <div> with a 1px or 2px border on that batch script instead of text quotation marks. It will make the toot a little more readable.

### Reply 5:
More guides added.

### Reply 6:
New feature: Rate the guides.More guides added.Cheers

### Reply 7:
This is cool and I appreciate the work you have put into it, but does anyone know where I can find a guide to setting up an Icarus fpga in windows 7 x64?

### Reply 8:
New item:Complete Guide To Mine Bitcoin on Xubuntu 12.04link: <link>

### Reply 9:
All of your How To Guides in One Convenient LocationMining Guides7970 linux (xubuntu) guide please! by LemBAMT How to Format a USB Drive for .img - Windows by BinaryMageBAMT Quick Start Guide For Newbies! by aaa801BAMT version 0.5 - Easy USB based mining Linux with farm wide management tools by lodcrappoCentOS 5.5 Mining Guide for ATI/poclbm by stickmanComplete Guide To Mine Bitcoin on Xubuntu 12.04 - Google Docs by lueoHeadless Bitcoin Miner Setup - Ubuntu 11.04 64bit by Joshua RuehligHow to setup an automated headless LinuxCoin mining rig + watchdog by YanzHow to setup a cgminer using xubuntu 11.04 live on a USB by KanoOzcoin Pool's Win7 cgminer setup guide by GraetUbuntu 11.04 Desktop 32-bit mining install guide by JoemaUbuntu Natty Narwhal 11.04 Mining Guide / HOWTO by InabaUbuntu Natty Narwhal 11.04 & Oneiric Ocelot 11.10 Mining Guide / HOWTO by InabaFlashing Your Graphics Card GuidesFlash your AMD GPU BIOS on a Linux Rig (still requiring Windows...) by <truncated> Memory to 150MHz on a 6990 running Linux by JinTuRunning a Pool - GuidesA Complete Guide to P2Pool - Merged Mining <truncated> plus LTC, Linux by ThiagoCMCecoinpool - A brand new pool mining software written in Erla<rest of post truncated>

### Reply 10:
Updated the list. Thanks lueo.

### Reply 11:
Nice collection, I've used a few of these in the past.and am checking on the vanitygen, I don't compile often. Last time I did it was on a PowerMac G4 and it took a long time.

### Reply 12:
nice list

### Reply 13:
More overview than howto <truncated> to Bitcoin Mining by weex <link> a note, as of August 7th and since it's release in May, this guide has been downloaded over 2300 times!

","[
  {
    ""hardware_name"": ""Icarus fpga"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PowerMac G4"",
    ""hardware_is_owned"": true
  }
]"
16840,"Date: 2011-07
Topic: Namecoin Bitparking Pool mining errors
### Original post:
I thought I would set this up just to make sure I understood what was going on however I am getting the following errors on a regular basis then they will go away and my shares go up:2011-07-09 00:31:15: Listener for ""bitparking - namecoin"" started2011-07-09 00:32:43: Listener for ""bitparking - namecoin"": Verification failed, check hardware!2011-07-09 00:33:00: Listener for ""bitparking - namecoin"" shutting down

### Reply 1:
Try mining solo? The namecoin difficulty isn't THAT bad... yet.If your miners are saying ""verification failed, check hardware"" however... I assume you are overclocking them too much.What cards do you have and how much have you overclocked them?

### Reply 2:
Do you have this issue with other pools?I was getting a ridiculous amount of stale shares at bitparking (>10%).I went solo for a while because of the problems.I just started a new namecoin pool if you're interested in trying it out. No fee during the first week.

### Reply 3:
Seems to need some work, I went to it and it says 'Welcome, drew!' and gives me an option to logout, though it is my first visit ever.

### Reply 4:
Thank you for posting this. I shut the website off for a moment. Doesn't affect mining.Give me a namecoin address, I'll send you some coin.

### Reply 5:
Ah nice, will be my first namecoin. <truncated>

### Reply 6:
Enjoy!

### Reply 7:
It's still showing that. :S

### Reply 8:
I fixed this Pretty damn embarrassing.Send me a namecoin address and I'll ship a couple coins your way.

### Reply 9:
Hi alli try to connect 4 miners.can they use the same namecoin as username or do i need a different one for each miner ?i work with windows and guiminer oder phoenix bat fileTHANKS FOR THE ANSWERS

### Reply 10:
On the bitparking pool, same namecoin address for all miners is fine.

### Reply 11:
Mmhhhwhen 1 connect 1 miner - it works - in 10 minutes the hashrate moves between 150 and 230 on the stat page (phoenix says 270)As soon i connect more than 1 miner the stat page show me 0.Also after 20 minutes an 2 different blocks, ( looks like it goes always on zero when a new block start.)So is there any chance to configurate something wrong ?I use the same phoenix bat on all computers, its a copy, and phoenix shows me that the connection is OK and the accepted shares and rejected shares (20/1)THANKS

### Reply 12:
Block rate shown by the pool is just an estimate. It drops to zero when a block is found as it starts the calculation again. I don't keep historical information of shares needed to keep the calculation active to save disk space.

","[
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cards"",
    ""hardware_is_owned"": true
  }
]"
20322,"Date: 2015-03
Topic: Please help with Antminer S2 setup
### Original post:
I recently purchased an Antminer S2. It has been connected to my router and is registering on my network. I have typed in the ip that show up on the display into my browser and have set it to DHCP. I then took the information needed to mine in a pool and input it where it needs to be url, worker name, etc. I then hit save changes. It hashed for about 15 mins and then stopped. Now i cant get it to start hashing again. I have tried resetting the unit and inputting all the needed info into the browser again and yet still cant get it to hash. Any help would be great thanks.

### Reply 1:
Well if you were able to mine for a while then the connection is set up right. Try using a different pool and see if that works

### Reply 2:
Try to use lower setting. Try several setting & see the behaviour.

","[
  {
    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  }
]"
10180,"Date: 2017-02
Topic: r4 antminer 7.5Th hardware fails issues
### Original post:
Hello there miners, my first impressions about the antminer r4 7.5TH are not all positive, although the machine is silent, I think it has a design flaw in its hardware, a lot of 14 machines 4 of them have thrown flaws in the processing cards. These errors occur with just a reboot of the system, or a change in the Miner configuration (eg change from antpool to slushpool)even in a simple on and off. I suspect that Bitmain must have received many reports associated with this failure. In summary the machine is unstable, In my case 4 machines have turned off several processors in both boards, And in one of the 4, it only recognizes one board. I tried with a soft reset, then hard reset, firmware upgrade and in all cases I did not have good results. If anyone has had this experience I appreciate your comments. In advance I have no other option than sending the parts to validate the warranty.

### Reply 1:
Thanks for your comment, there is actually no other option than the change of boards which translates into loss of time and money. In my case I see that the percentage of machines that failed is very high 4 out of 14. And the cause must be because the machine is not robust, it probably has not been tested enough before its release

### Reply 2:
50% fail rate here from 4 of the 7.5th machines.. 3 previous batch machines still running without issue.

","[
  {
    ""hardware_name"": ""antminer r4 7.5TH"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""processing cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""boards"",
    ""hardware_is_owned"": true
  }
]"
12099,"Date: 2012-10
Topic: cgminer for litecoin?
### Original post:
Is there a cgminer for litecoin? And if so is it the best one for solo mining litecoin? Where can I get it? IVe been on the cgminer site but cant find a litecoin one

### Reply 1:
See this thread: <link>

### Reply 2:
CGMiner already supports mining litecoins.

### Reply 3:
May I say RTFM ? , or just search the forum. Regards

",[]
22087,"Date: 2017-12
Topic: Factory reset with SD card for Antminer S9
### Original post:
I've looked around for documentation on how to do this, but I've not seen anything. Does anyone know how to reset to factory settings using the SD drive on an Antminer S9?

### Reply 1:
You dont need an SD card to reset to factory settings. Just use the IP Reporter reset method.

### Reply 2:
Thanks! I've actually already tried that, but it didn't seem to work. At least, there wasn't any visual change in any of the lights. What should I observe when I use the IP reporter to reset to factory settings? Any change in lights or activity? When I attempt to use both the reset button, and the factory reset with the IP reporter, I don't see any changes in lights, or changes in fan speed.I'm unable to see the IP address on my network (via any method), and the device otherwise appears to be okay.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IP Reporter"",
    ""hardware_is_owned"": false
  }
]"
14355,"Date: 2011-06
Topic: PowerColor LCS AX6990 available (liquid cooling version):
### Original post:
PowerColor LCS AX6990:<link> is the liquid cooling version.Seems to have no order limits and is at $899.99If this helped you, please consider donating: <truncated>

### Reply 1:
$900? wtf i hope it can be locked to 2ghz...

### Reply 2:
For someone who has a cooling radiator/system already, these should be very tempting... if you have the money obviously.These are not double-wide and take only 1 slot... You can fit ALOT of these on some motherboards.They will run in low temps and will be quiet. You can OC the crap outta them in this config I think...Would like to hear from anyone who has something like this with these 6990s already going...

### Reply 3:
Do you need to have the cooling radiator/system to run these? Will the card work without it?[/quote]For someone who has a cooling radiator/system already, these should be very tempting... if you have the money obviously.[/quote]

### Reply 4:
I cant help you with 6990 water info, but I have 2 5970's watercooled using the razor 5970 waterblocks, 50mm triple radiator with 3 <link> I run them at 964mhz @ 1187mV getting 1.6gh over both temps are 40c~45c cores and 70's on the vrmsI also have a single 6990 with stock cooler (much better designed and cooler than stock 5970), 6990 hits 890mhz and temps stay in the 70's pretty easy, and gets 0.78gh, never really tried to push it higher. I don't think the 6990's need water as much as the 5970's.

### Reply 5:
you will burn the card out if you run it without a water cooling system

### Reply 6:
What kind of equipment would work with this card and how much would those go for?

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23688,"Date: 2021-09
Topic: T17 random hashplates dropping off
### Original post:
After flashing hiveon OS on T17 it started to randomly drop hashplates as in attached kernel log. Sometimes it works for 10 minutes, sometimes happens immediately. And its basically always different hashplate.I cant say that it worked fine with default firmware, as we did not test it.Any ideas what could be wrong?<link>

### Reply 1:
Look at these logs <truncated> 17:48:47 <truncated> Chain[0]: find 29 asic, times 02021-05-08 17:48:53 <truncated> Chain[0]: find 30 asic, times 12021-05-08 17:48:58 <truncated> Chain[1]: find 0 asic, times 02021-05-08 17:49:04 <truncated> Chain[1]: find 0 asic, times 12021-05-08 17:49:09 <truncated> Chain[1]: find 0 asic, times 22021-05-08 17:49:09 <truncated> Chain 1 only find 0 asic, will power off hash board 1It seems the Chain[1] is faulty it shows no ASIC compared to Chain[0] and Chain[2] that is why the miner run at the low hashrate because one of your hash board shut off.Can you try to reattach the cable of the Chain[1] or try to replace the cable with a known working if you don't have extra cable try to use the cable from Chain[0] or [2] and test it againIf the result still the same try to run the miner at low power I don't know how to set it to low power mode with hiveOS but I think you can adjust it on their site.

### Reply 2:
you did not test the gear and flashed it.So we will never know if it did work fully before you flashed it.you very likely have to settle on 2 boards.What is the hash rate for the 2 boards? 27-29 th

### Reply 3:
If it always would fail on one hadhplate I would not ask, but plates change.This boot it was plate1. After restart plate 1 might work well, but plate 3 would not be visible. After restart plate 2 and so on.It was running for 30 minutes on default OS with stable 42Th, but I dont think that it really matters as 30 minutes is nothing

### Reply 4:
And why on earth would you do that? Anyways, the kernel log shows that your chain 1 (the middle hash board) is dead, it could cause the miner to go into a loop of reboot, get rid of the firmware, and see if you see any different results which is unlikely, to be honest, and then just unplug chain 1 and mine with 0 and 2.Of course, this assumes that you did the basic physical inspections like checking the screws on the busbar and replacing the ribbon cable.

### Reply 5:
I appreciate your time and help, but it seems that you are focusing on one hashplate.Im not an expert at all, and I dont think that it makes sense to talk about reasons for flashing etc.Im not hoping that there is some simple trick to make it work again. If it has to be repaired then so be it.What is strange to me that every time it is different hashplate that drops off. I hardly believe that suddenly all plates are bad, and there was no physical damage to unit.Therefore, my main questions are can these be a symptoms for bad control board or PSU?First thing first I will try to flash default bitmain firmware on it.Im this kernel log it is chain 1, after reboot it could be chain3 and so on. If one bad plate affects whole circuit and can trigger different hashplates thats a different story.

### Reply 6:
There are is usually no physical damage that can be seen, the T17 miners have a very high failure rate, mainly due to the bad soldering of chips, the chip will usually NOT fall but the contact becomes too weak.With that said, if you are consistently getting different results, I would flash the stock firmware (avoid the latest one) and test 1 board at a time, this could be a power-related issue, we can't tell for sure especially while running the miner with such firmware.

### Reply 7:
Ok.. so update on this topic. First of all, I was wrong that it's always a random hash plate - it is always chain[1].1) On default firmware nothing changes2) On chain[1] plate one capacitor for the power supply was a bit loose, soldered it, no difference tho.3) Taking a functioning hash board and placing it in a chain[1] slot does not solve the problem - still in the log it is always chain[1] that is falling off. 4) Took ribbon cable from functioning board and placed it in chain[1] - no difference.Took everything apart and inspected, no visual damage, all heatsinks are sitting tight. plates look like new. Again - can faulty control board or power supply cause such symptoms?

### Reply 8:
This could be a faulty control board, but in my years of mining I have never come across such an issue, the likelihood of a control board that works okay with 2 chains and the 3rd chain is bad is just too low, did you try the 4th slot? the control board has 4 places on which you can attach the ribbon/data cable into, there is an empty one since the T17 has only 3 dashboards, can you try to use that port and see if you get any different results?Also, make sure the busbar is firmly put, and the screws are tightened, if either the positive or the negative is even slightly loosen the dashboard won't <rest of thread truncated>
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20146,"Date: 2015-01
Topic: How to setup cgminer w/ avalon nano
### Original post:
Hello, I am new to mining bitcoin and have a few questions. First, I bought a Avalon Nano ASIC and noticed it only works with cgminer. Still setting up cgminer (it won't recognize my USB.) Second, I'd like to see what other mining software would work with it (I'd like a miner with a GUI.) Can anyone reply with help on how to setup cgminer? I can't figure out how to attach a screenshot of cgminer and zadig. I'll work on that. And any miners w/ GUI. Thanks

### Reply 1:
Me again. cgminer says I need to install WinUSB for my ASIC. Zadig shows I have WinUSB installed. Still not working. Any ideas?

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]"
22836,"Date: 2019-01
Topic: error updating antminer t9+
### Original post:
hi i was trying to update my antminer t9+ with the latest firmware, when I try it an error comes outthe message that appears is: Code:mount: mounting ubi1:rootfs on /mnt/config failed: Invalid argument mkdir: can't create directory <truncated> No such file or directory cp: can't create <truncated> No such file or directory umount: can't umount /mnt/config: Invalid argument mount: mounting ubi1:rootfs on /mnt/upgrade failed: No such file or directory runme.sh: cd: line 126: can't cd to <truncated> umount: can't umount /mnt/upgrade: No such file or directoryI'm trying to update my firmware because my antminer is mining with 9.5th instead of 10.5 , the chain number 12 does not appear

### Reply 1:
I never had the t9+did you download from here?<link>

### Reply 2:
Try to reset it first you can follow the guide from here Three Ways to Restore Factory Settings (R4/S9/T9) and then check the hashrate again. Also, you can try this firmware from Bitmain <truncated> read this description below about this firmwareCode:1. Not support C5 control board.2. Reduce power consumption.3. Automatically abort the upgrade if the criterion is not met.4. Please revert to the previous version if the miner is not stable after upgrade.If your miner doesn't meet the criterion the upgrade process will stop based on the description and if your control board is c5 the firmware is incompatible so the required firmware for your miner is this one <truncated>

### Reply 3:
Weird, I also had this problem when I tried to flash the newer firmware to my T9+.

### Reply 4:
I tried this and now I can't find the ip, it doesn't appear on the router's <truncated> find the ip, then I reset it from factory and the hashrate was the same 9.2th, I tried to update the firmware and the same error...<link> fix the hashrate's problem, but I still can't update the firmware...

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10446,"Date: 2017-08
Topic: S9 Antminers for sale
### Original post:
For those who missed out on latest batch of S9, there are some goods news. I have batches of 5 and 10 S9s on order. Drop me a line if you want to buy or for more details.S9 Specs:Hash Rate11.5TH/s, 12.5TH/s, 13TH/s, 13.5TH/s & 14TH/s, depending on batch. Variation of 5% is expected Power Consumption1127W (11.5TH/s batch), 1225W (12.5TH/s batch), 1274W (13TH/s batch), 1323W (13.5TH/s batch), 1372W (14TH/s batch) (at the wall, with Bitmains APW3 PSU,93% efficiency, 25C ambient temp). Expected discrepancy of +10% Power Efficiency0.098 J/GH +10% at the wall (with Bitmains APW3 PSU, 93% efficiency, 25C ambient temp) Rated Voltage11.60 ~13.00V Chip quantity per unit189x BM1387 Dimensions350mm(L) x 135mm(W) x 158mm(H) Cooling2x 12038 fans; Front fan: 6000rpm, Rear fan: 4300rpm Operating Temperature0C to 40C Network ConnectionEthernet <truncated> set

### Reply 1:
This is wrong forum area, go to the Marketplace -> Computer hardware.And as you are newbie user, you might want to post some pictures of the hardware with a paper written your username on it and also allow escrom service as the payment prodecure.

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15990,"Date: 2017-12
Topic: ¤¤¤¤ antrun.de - Antrouter R1 Fun-Run - compare your share ¤¤¤¤
### Original post:
Thanks, good idea and good job with ""R1 Fun-Run""

### Reply 1:
@RichBCwhy has you a speed from 15G each member only one Antminer per Line :-)Regards,Willi

### Reply 2:
good ideai updated the rules""One line per R1"" You can have more than one R1 but each R1 must be seperated

### Reply 3:
Perfect, or i burn a 1 PHs rental from nicehash :-)

### Reply 4:
It is only a single R1. I am running at a frequency of 200MhzRich

### Reply 5:
Have you still got it running with an external power supply?

### Reply 6:
No this is a second unit in completely standard form. I have had it up to 250MHz, but 200MHz is the highest frequency I have been able to reliably run it at without increasing the core voltage or adding cooling.Rich

### Reply 7:
Blimey. I can't get mine past 137M. Otherwise it just read 0.18ghs or so.

### Reply 8:
200 is pushing it and it does slow down and restart quite often, however you should be able to run at 150 without any problems.Rich

### Reply 9:
Do you change the number in the voltage field when you adjust the frequency, or just set the freq and go? I'm talking for minor oc'ing, like to 150 as you mentioned.Here I thought I was doing well with a 120K share already, only to look and see I'm the lowest one so far, ha!

### Reply 10:
finally this R1 has some fun...How do you overclock this <truncated> ""10.8G"", ""hashrate5m"": ""7.94G"", ""hashrate1hr"": ""1.13G"", ""hashrate1d"": ""49.6M"", ""hashrate7d"": ""7.1M"", ""lastupdate"": 1459142580, ""shares"": 1000, ""bestshare"": 1271.0301648095049, ""bestever"": 1271}

### Reply 11:
Just go to the Configuration Advanced setting tab and set the Frequency, the Save & Apply. I did not think there was a voltage setting? I think that is only in the U3 setting?Rich

### Reply 12:
mines running 137.. seems stable at 7ghs.

### Reply 13:
Hi,i updated the PageWelcome

### Reply 14:
I'll bump mine up a little bit then, I never did bother with upping the frequency before because I didn't really see the point for just another GH/s or two, but for the fun run I may as well.Here's a screen cap from my R1, voltage setting is active under the R1 tab:

### Reply 15:
Ok you are running a different version than me. However the voltage setting will have no effect on the R1.Rich

### Reply 16:
I was wondering if it would be possible for the homepage to sort the user list by active ""green"" users first, highest share to lowest; and then inactive ""red"" users, highest share to lowest? That would be very helpful I think. Thanks, been fun so far watching the little R1s go.@137.5MHzps - no longer in last place, woo!

### Reply 17:
Hi,i have to lookpage is mostly hardcoded - i am not a very skilled web-/php-developer - it's just a little hobby - if you can/want to help - feel free to contact me it's not linked with a mysql database.i just get the json values from the solopool-api, which i post in the php pagegreetings

### Reply 18:
i overclocked the little bugger and now it hang and completely disappeared from network.I have done a reset on the guy --- does anyone know the initial IP address of this R1?

### Reply 19:
initially its set to dhcp on the lan.. you have to connect to it via wifi. then set the lan to static and to accept incoming connections.

### Reply 20:
thanks aaron - the little guy is alive again.... and catching all of you guys, little juvia is currently last

### Reply 21:
So ich hoffe das nun alles Richtig eingestellt ist!Also lasst den Fun-Run beginnen.<link> nochmals an Willi fr seine mhen!

### Reply 22:
ich adde dich, wenn ich zu Hause bin :-)(i will add you, when i am at home after work)

### Reply 23:
ammi84 / willi - maybe in webpage we can put the mhz clock speed used for each miner?

### Reply 24:
possible but i can't read it out the API ...when somebody wants the MHz value - i can add it manuallybut the idea is good

### Reply 25:
My R1 is 100Mhz and 0725 voltage -- i think this is stock value.Anyone has clocked better without killing the poor guy?

### Reply 26:
I'm currently at 137m and with the voltage box blank as I was told it doesn't do anything anyway. That's as fast as my one will go before it starts to restart all the time.

### Reply 27:
I am running at 200MHz. This is as high as I can go without additional Cooling, there are however frequent reboots by the Cron Job because the Hash rate has dropped. It will run at 225MHz and 250MHZ hoverer it needs additional cooling and the voltage tweeking up a bit which I have done on my other R1 which is running outside the case.Rich

### Reply 28:
i am thinking of rebooting the R1 every 12 hours, so that its always ""fresh"" - is this good idea?In one of the tabs, you can insert scripts during startup.Anybody know what syntax should I put in to reboot every 12 hours? perhaps a counter/countdown?I OC the R1 to 150mhz - still ok but may try 200mhz later

### Reply 29:
just received my AntRouter from Willi (thanks again )here<rest of thread truncated>
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10254,"Date: 2017-04
Topic: Pantech SX6 8.5 Th/s miner
### Original post:
Efficiency is good - not great, but good. Makes me wonder if they're running the chips hot or if they're regulated. I'd like to see it with the shell off.

### Reply 1:
Seems like more manufacturers are hopping on the miner train. This is good news.I found this miner for sale at 51ASIC, which is a big reseller for miners in Russia.It uses 16nm chips by <truncated> is Pantech from South Korea, which is more commonly known for making mobile devices.LINK: <link> Any thoughts, comments?

### Reply 2:
Thanks for sharing this! Nice to see another miner enter the market. But at the 85,000 price, I would have to pass. I tried searching pantech's website and alibaba.com for this miner, but couldn't find one.

### Reply 3:
Yeah I tried searching as well, but I was not able to find more information

### Reply 4:
I did pick up 5 of the Ebit E9's though. They seem to be hashing smoothly at about 6.4th/s each on Kano.isI have them hosted at Oregon Mines. I'll post more about them in the E9 thread, after I have had them for a couple of weeks.

### Reply 5:
85000py6 is nearly 1500usd without shipping and customs fees. Even though it uses bitfury chips I'd pass on this one; I'd rather just buy an Avalon or Antminer at this cost.

### Reply 6:
I agree. But their price for an s9 is 138,000 , which is quite a bit higher than the Bitmain price. So hopefully pantech will start selling them directly to miners, or at least a site like eastshore.xyz that doesn't have as much of mark up. I still would love to check one out.

### Reply 7:
Yeah 51ASIC is taking some margin for them, so buying directly or via some other reseller could possibly be more reasonably priced.

### Reply 8:
Interesting, we need to find the direct sale wesite!

### Reply 9:
Looks exactly like an Antminer S3.

### Reply 10:
So do the Pinidea DR series miners, although they're not bitcoin miners. I guess people just like this design or it has good airflow compared to others.

### Reply 11:
Well the S3 was both very quiet and very reliable, something that people seem to have forgotten how to do since then. So why not roll back to the best design?

### Reply 12:
Here it is. <link> disappointed our expectations and decided not to release those upgrade kits...Exactly. It looks that they have no real intention to sell it but mine for themselves... 'Cause the price is unreasonably high. But anyway the test X6 unit I have for several months is looking stable and reliable.

### Reply 13:
It's not like bitmain didn't go trough several design modifications to come to the way they arrange ASICS now. Designs have been pretty similar from the S3 on but what does that have to do when the most important thing is efficiency?

### Reply 14:
I'm actually in process with buying a X5 upgrade kit from Hotmine.I paid it and I have a tracking code. I will do a quick review/how-to guide here at the forum when I receive it.edit: tracking says that it has now arrived from Ukraine to here Finland, so I should have it quite soon.___But, back to the topic .Does anyone have more info about this Pantech miner?I sent Pantech e-mail, but they have not responded to me.

### Reply 15:
I found this Russian article at <truncated> news and it seems like Pantech has other miner models as well, all of them using Bitfury chips. There are some nice pictures of their hardware in the <truncated> cae epo ae? Oe To Poca<link> is an english translation (Google):Code:April 7 at the site of Growth Point in Moscow hosted an event ""Business and Mining"". The event was dedicated to the presentation of equipment for mining, in fact turned out to be a major event. This was already evident in composition of participants: Oksana Bobylev, head of blokcheyna in the growth of the party, Dmitry Marinichev, Internet Ombudsman, member of the advisory council ""of the Agency of strategic initiatives,"" CEO and president of the company RadiusGroup, Elina Sidorenko, head of the interdepartmental working group rISK ASSESSMENT turnover cryptocurrency the State Duma, and not only. But about everything in order.He opened the meeting Oksana Bobylev, welcoming participants on behalf of the growth of the party. Leader of the Party - Authorized the Presidential Council for the Protection of Entrepreneurs' Rights Boris Titov, a year ago began to defend blokcheyn technology from prosecution attempts, now<rest of post truncated>

### Reply 16:
Judging from the external images they are using the same layout/make of fans as on the PinIdea X11 600mhs (I have one myself).All I can say is that the fan sound from this unit is loud. Loudest of all my miners.

### Reply 17:
Which, if you read a little bit forwards, was based off of the S3. The fan models I am not sure of in the miner, but if they're anything like the S3 it'll be a generic miner sound, nothing too horrible. Not big news as it could just be another piece of unreleased hardware but if it comes out I'll consider it for<rest of thread truncated>
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16175,"Date: 2021-12
Topic: Bitcoin mining hosting
### Original post:
Hi All, I hope this is the right subforum for this as I am new to the community. I recently invested in a home and have spare rooms that I wish to rent out for bitcoin miners. I have solar electricity and gig internet. I am willing to sell excess electricity to miners or host their equipment to mine here.If anyone is interested please let me know.Thank you.

### Reply 1:
You apparently do no realize just how much power Bitcoin miners draw (>1kw-3.5kw each) nor the fact that all that power is exhausted as heat -- think giant space heaters -- and the incredible amount of noise the cooling fans make pulling that heat from the miners...You need to learn a lot more and rethink your idea.

### Reply 2:
Thank you for your insight.I have A/C that is not central and dedicated to the room that would host and and also can vent the heat outside. I can achieve sound dampening via soft fabric or dedicated dampeners. If these fans are louder than a 5000rpm hard plastic heatsink like a Thermaltake or similar, I might suggest better cooling. I should be operating at an energy surplus, so if that is 1-3.5kw per day at 97% uptime that's 2444kwh per month. That is an electric bill of about $285 per month and $3400 for the year. At that time I suspect any mining solution to be inefficient as the electricity costs too much with the addition of internet and maintenance fees.

### Reply 3:
No mate, a bitcoin miner pulls around 3.5kw continuously while mining, not per day.

### Reply 4:
Our one miner runs in the room were all our solar system hardware and battery sits. That miner makes enough noise that if my wife is going to work in that room, she wears ear plugs. Very far beyond the sound of any noise any of my server PC's has ever uttered.Scott

### Reply 5:
Can you help me with the math? How much energy will the system draw per hour? 3.5kw per what(hour? minute?)?

### Reply 6:
Since you asked about energy:A 3.5kw (3500W) miner will burn 3.5 kwh in an hour and 84 kwh in a day, 2500 kwh a month.With your excess electricity, you might be able to host one, but you said solar energy so does this mean you get that only during the day with a peak during midday and then zero? You will either need batteries or power the miners from the grid which will cut a lot into the savings.They are louder than a vacuum cleaner running into a sock under the bed, around ~80 dB.

### Reply 7:
The unit of measurement you are looking for is called kWh or Kilowatt-hour, any thing that runs on electricity will have a label stating the draw in watts or kilowatts, it will be ""W"" or ""KW"".To convert from W to KW you simply divide the number 1000, and then convert it to kWh you just multiply the KW by the number of hours you want to measure.Example 1:For a miner that uses 1200w, we divide it by 1000 to get 1.2k, to check how much it ""consumes"" in 3 hours, just do 1.2kw*3h = 3.6kWh.Example 2:A miner that uses 800w, divide by 1000 you get 0.8KW, to see how much it ""consumes"" in 30 mins you x it by 0.5 and you get 0.4kWh.The average 10 or 15 solar arrays on the house roof can't handle mining operations, you will hardly be able to run your own miner on it, let alone ""HOST"" other people's miners.

### Reply 8:
rule of thumb a 10k grid tied solar array gives 10/6= 1.67 kwatts 24 hours a dayif a really good area for sun10/5 = 2.0 kwatts 24 hours a day.so if grid tied 10kwatt averages 1.67 to 2 kwattsand if battery less.really good panels are around 400 wattslow grade panels are 200 watts.many homes have 5000 to 10000 watt setups.they can not do a s19 miner as they do not have enough power.

### Reply 9:
So my math was correct that it would draw about 2444kwh per month? How is mining an effective solution for anyone? Do you outsource to other companies to mine or run hardware in underwater cooling silos or mountains?

### Reply 10:
Simple - you just need reasonably CHEAP electricity and good airflow. Nothing complicated about it at all.

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    ""hardware_name"": ""Thermaltake"",
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    ""hardware_name"": ""battery"",
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8929,"Date: 2015-03
Topic: Spondoolies SP20E. One impressive miner 0,526 W/GH
### Original post:
This is one serious miner. I made a trial buy of 6 pcs, before deciding to go with either Bitmain or Spon and what a treat these SP20`s are.No doubt that running at full speed is never going to make ROI with todays price, but when you downclock these miners to 650 Watt you are able to hit 0.54 G and then its suddenly very interesting.It has taken me around a week to get them tweaked into perfection, with Wall meassure, Temp meassure and so on. For me sound is not an issue, since they are operating in another building.As this pic shows, i manged to get 1176 Ghash with 639Watt of usage...impressive 0,539 W/GHI wanted to run as close as possible to 1200 Ghash and manged to get down to 658Watt = 0,548 W/GH. Was it possible to get these SP20`s to beat the Bitmain S5.....Almost.... 1156 Ghash at 609Watt = 0,526 W/GHThis testing made my decission quite easy.... Spondoolies SP20E its going to be and 30 More has been ordered.. you have to have in mind that when needed these miners can run 1650 Ghash, so with Spondoolies you have headroom, with Bitmain S5, you are stocked with 5-7% overclock from 1155 Ghash.I will follow up how things are going with ROI on these miners, but for the moment 7,<rest of post truncated>

### Reply 1:
Thanks for sharing, trying your 1.2 th/s settings now .heat is my enemy at the moment but I just will not put the fans on more than 30 !!!

### Reply 2:
>11% (from 1155 to 1300 Gh).

### Reply 3:
Interesting, but what is the power usage at the wall at 1300 ghash

### Reply 4:
About 680 Wt at the wall, depending on your exact PSU, it's efficiency, 80Plus sertificate and so on.

### Reply 5:
All of your screenshots show CGMiner up for under 6 minutes, are you getting consistent hash rate after a few hours?

### Reply 6:
Yes they are running for days with only very little decrease du to room temp durring day time.

### Reply 7:
yeah I prefer the sp20's as they stack nice.the s-5's need fan mods and don't stack nice.I did manage to get an s-5 to run at freq 412 and use 693 watts giving 1331 gh with .035% errors rate is 99.965% good. the mods are about 20 in fans and 15 for a fan controller that can run 3 s-5's. A bit of a wire mess. So I have 9 sp20s and 1 s-5

### Reply 8:
Close to 750W, off the top of my head.Running one of mine @ 1300GHs with fans at 20% and she's staying cool.

### Reply 9:
My 35 pcs SP20E farm is now running 40.8 TH at Slush. They have been running for a week now and all with down-clocked to 600-650 Watt giving from 1150 to 1212 Ghash and Extreme Stable.Giving me a 0,55 W/GH and thats pretty nice.Next step for my SP20E farm will be 1330-1350 Ghash with a wattage pr miner of 811-825 Watt, giving me total 47 TH and 0,60W/GH... if price goes even higher up, third step is going to be1470-1490 Ghash with a wattage of 1010-1025 Watt = 0,68 W/GHThere is still head room to push them up to 1650 Ghash a pcs total, but much higher WattageAll 3 steps has been tested and optimized, written down for all 35 miners with WattMeter in the wall.Finally, some mining Porn :-)

### Reply 10:
The only bad thing is that if you decide to clock them a bit higher, you will have to get more PSUs

### Reply 11:
Yes you are right and its going to be Evga all the way. These PSU keeps amazing me with their ratio in performance. Tried to run at 700 watt on a 750 watt psu and they are all able to deliver. Question is just for how longHalf of my Psu are 1300 Watt Evga Supernova G2 and rest 750 Watt Supernova G2. Tried a lot of other brands, but keep going back to EVGA.

### Reply 12:
The 1300 G2s can handle 2 SP20s without any issues. We've run them up to 1400W constantly at the wall back in the GPU days. Just make sure it's not too hot in the room and it's all good to go.

### Reply 13:
Eh, even if it's hot, they're tanks. They're rated for continuous 1300w output at 50c ambient.

### Reply 14:
Great looking setup. I'm hoping to have something similar soon.

### Reply 15:
This is why I love the SP20 ... so configurable that allows you to react to current market conditions.

### Reply 16:
Great info I'll be trying your settings after im all spun up.. The gf is still making power supplies...<link>

### Reply 17:
These are really nice setup! So we can run 2 sp20 on a evga 1300

### Reply 18:
That's interested. How loud are they running at these underclocked speeds?

### Reply 19:
Looks very good indeed. Just noticed that you decided to use blade psu. Remember to ask insurance company if they will cover this mod. What psu did you decide to use ?

### Reply 20:
Didn't measure the db but they are loud.. But since they are located in another building sound is not an issue.

### Reply 21:
While the rig setup is impressive, even more striking is that your GF is interested in working on this! That to me is probably the most valuable thing you have going for you.....

### Reply 22:
I'm confused, is there a sp20 and a sp20e? Two d<rest of thread truncated>
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    ""hardware_name"": ""Bitmain S5"",
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  },
  {
    ""hardware_name"": ""PSU"",
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  {
    ""hardware_name"": ""Evga 1300 Watt Supernova G2"",
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    ""hardware_is_owned"": true
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    ""hardware_name"": ""Blade PSU"",
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21082,"Date: 2016-06
Topic: cgminer u3 memcpy issue
### Original post:
hey allafter a few days of fighting my u3s to be discovered by cgminer it turns out they only work on version 4.9.2 now but my issue is i get the following errors 1 straight after another.Code:pool 0 difficulty changed to 4000.9err: asked to memcpy 0 bytes from util.c <truncated> from pool 0 requested work restartany help would be appreciated thanks

### Reply 1:
It is actually a harmless warning but is probably due to the way your pool is set up using a zero byte entry in stratum. You can safely ignore it or mine on another pool.

","[
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22736,"Date: 2018-09
Topic: Avalon 841 Rouge
### Original post:
I Have an 841 that just wants to run at 15.8TH/s+ no matter what I set the voltages at even the max temperature setting seems no help.Once it goes above the max temperature it will slow down to normal speeds.

### Reply 1:
I was wondering a few things.Is this a new addidtion? Do both 841's have the same firmware? When you change the voltage options does either machine operate differently? Have you tried just the 1 machine on it's own for a baseline?Are you just basing off the GHSasc numbers? If so I think that is just a peak hashrate reached not sustained.Can you post a copy of your API log? Might be something in there.I remember with the 741's there were some lottery units based on their chip design that just outperform other units, not sure if this is true for the 8 series. You may have gotten lucky if there are no adverse affects. I noticed you said it slows down after reaching the high temperature limit, does it ever shutdown?

### Reply 2:
Looking at your screenshot, it would appear that your GHSav is what one would expect it to be, namely, ~13.7TH/s each. The GHSasc numbers are something of a mystery to me in terms of the actual numbers they represent. I find it better to go with the AV/5m/15m/etc.

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9782,"Date: 2016-04
Topic: Antminer S4 PSU for Antminer S5
### Original post:
Hi,I have one psu from my broken s4 and want to use it to run two s5.But cables are different and i don't know how to change them to 4 pin.Anyone can help me?Thanks,

### Reply 1:
You will probably need to rewire and split to make PCI-e ends. Or you could jury rig the +V to the +V on the connectors. It would work but its not something i would do. Maybe you could find some kind of breakout board that you could connect all the + to one bolt and all the ground to the other and then connect PCI-e cables on it.

### Reply 2:
Or you could just undervolt the S4 and run it at 1TH/s and use 0.6W/GHS instead of 0.5W/GHS like the S5.

### Reply 3:
thanks.I found this kit:<link> this is expensive. I think the best solution as you mentioned is rewire the psu.

### Reply 4:
This is just psu. chains are broken.Also i can run 2 s5 with this psu and get about 2.2TH !

### Reply 5:
Pretty sure thats a breakout board for a different PSU. I dont see how you could make this work with the one you have.

### Reply 6:
Oh. I thought this is universal kit and i can use it for my psu.

### Reply 7:
Easiest way would be to solder those screw terminals to the S5.

### Reply 8:
Thanks. I'll do this.

### Reply 9:
If I were doing it and wanted something nondestructive, it wouldn't be too hard to crimp a 6-pin into a ring terminal, then use short bolts to lock 'em onto your PSU cables and tape the connections.

### Reply 10:
Yeah its definitively not. Its for the DSP-800 as per title name.

### Reply 11:
yes, this possible too, without changing anything in both psu and ants.thanks.

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9802,"Date: 2016-05
Topic: IBM 2880W PSU not working
### Original post:
Hi guys,I have one IBM 2880W PSU not working. The top green light turns on when I plug it in, but the bottom light does not, and the fans won't turn on.Do any of you have any ideas on what's wrong? Do I need a new fan pack? If so, where can I buy one?Thanks again all for your help!

### Reply 1:
and do you have others that work?ie do you have a breakout board?plugging them in does not turn them on you need a breakout board.are you sending it 240 volts if you do have the break out board?the only breakout board builder<link> threads read them as the gear has issues on high power draw per jack.<link>

### Reply 2:
Make sure the fan pack is installed correctly. One of the PSUs I got in hosting arrived with the fans installed upside-down. The jack is keyed, so it was kinda smashed in there but everything fired up proper once I flipped the assembly around. I forget if it didn't power up at all, or if it just overheated really quickly.

","[
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13951,"Date: 2011-05
Topic: mining pool getting problem communicating RPC
### Original post:
Hi I am trying to do the mining pool but I keep getting the error ""Problems communicating with bitcoin RPC"" when I specify a host/port in poclbm.exeIf I don't specify a host/port it works fine but then I am not apart of the pool I guess.I have forwarded port 8332 from router to my PC. I am using windows 7 64bit and I have enabled port 8332 for both inbound and outbound traffic in the win7 firewall. but I am still getting the RPC errors. Is there something I am missing? maybe a special way to enable it in the win7 firewall?Im using both cmd line proclbm with following command:start <truncated> poclbm.exe <truncated> --port=8332 --user=login --pass=password --device=0 -w 128 -f 60I tried the GUIMINER but i get same error although every 15 mins or so on guiminer it looks like it does connect cause my Accepted thing went up even though console is spammed with the RPC error.

### Reply 1:
pick a different pool, slush is having problems.

### Reply 2:
I see, yeah, I switched to deepbit and I'm having no issues now. Thanks.

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16750,"Date: 2011-07
Topic: trouble with poclbm (shows only a couple of MHash/s)
### Original post:
first off, if this problem was solved before, please point me to the right thread, but i couldn find anything similar I have trouble setting up poclbm.i only get a 2MH/s hashrate. tried it with the dos promt (cmd.exe) and guiminer.i checked both my gpus device=0 and device=1it seems poclbm cant detect the gpus.everything runs smooth with phoenix, but i was wondering if i could mine more efficient with poclbm.Win7 64bit; catalyst 11.6; 2.4SDK; HD5850; HD5770Any help advice appreciated.

","[
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14068,"Date: 2011-05
Topic: transacton fee belongs to pool operators
### Original post:
1 transacton fee(if there is) belongs to pool operators( acturally the block creater, most are pool operators) is that true?2 how can pool operators determine labors who just submit share hash done no result found , without any calculation?

### Reply 1:
Transaction fees are claimed the same way as the BTC rewards for block solving. Couldn't you rephrase this question please, I can't wrap my mind around it.

### Reply 2:
Preparing to calculate translation...24 AC/sTranslation found!""How can pool operators identify someone who submits a false 'share complete' message to the pool without actually performing any work to calculate a solution?""

### Reply 3:
The solution is always verified. One double block hash is quick. Performing a metric ton of them to find one that fits the solution is long.

### Reply 4:
In most pools, yes, the pool operator keeps the transaction fees. There is at least one small pool that distributes the transaction fees to the miners.There is a difference between a Share and a GetWork. You don't ""complete"" working on a Share, you find a share (a hash of the block header that meets difficulty >= 1) within the space of the GetWork. Most of the time, you don't even bother to finish looking through the entirety of the GetWork solution space, you just request a new GetWork every once in a while.Pools count the number of solutions of difficulty >= 1 that you found. That is proof that you have been doing work. One of those solutions might also be a full solution that exceeds the current real difficulty.And the pool does confirm that all shares that are submitted are valid.

### Reply 5:
You can see the fees at blockexplorer.com by clicking on the finished blocks.<link> looked at the last group for the fees..01.10.02.03So for the last 5 blocks all combined the fees are .16 btc Not really much at all. The pool operators are not 'cashing in' on these fees by keeping them yet.

",[]
14344,"Date: 2011-06
Topic: What's a high invalid/stale rate?
### Original post:
What say you guys?I thought anything above 1% was high?

### Reply 1:
Lowest I can get now is ~2%, have seen ~10% though when trialing a couple of other pools

### Reply 2:
Wow 10%

### Reply 3:
i've been getting 0.9% on btcguild lately.used to get 0.75% on deepbit, but with 0.5% less fee, i'm still ahead.

",[]
22757,"Date: 2018-10
Topic: Free Electricity - Need Advice
### Original post:
So ya, I've got free electricity at the place I'm currently living.Of course, it's not without its limitations. For one, I've only got access to six 120V outlets, all on the same 20A breaker. I probably have a maximum of 1600W to work with if I want to stay below an 80% max amperage draw (since, I've got a tv and a few other minor devices too). Also, I don't have direct physical access to the Internet router. I'd have to use a WiFi extender with a built-in Ethernet port, and then connect my miner to the extender via a physical cable. I don't think that would be an issue though.Thing is, I'm not really sure how to determine what coin would be most profitable and thus, what hardware I should buy. Bitcoin is really the only coin I'm familiar with, and really the only one I wouldn't just immediately sell, since I've got the luxury of not having a utility bill. But of course, I'd mine something else if it meant a bigger profit margin.I was looking at the S9, which from today's estimate I guess would make me about 90USD per month, based on some online calculator I found. I suppose if I can find a used miner on ebay for under 300USD then I might jump on it, but of course with the difficul<rest of post truncated>

### Reply 1:
From what I see from my personal case with a 7TH machine I need almost half a year to reach that $300.I'm currently testing pools and some (Slushpool) predict what you can daily make.That's +/- 0.00023290BTC at the moment. so that's about $1.54 in your currency (I'm european so I'm using euros).As these giant pools seem to constantly find blocks this value seems to be constant.The S9 is 14TH? so double that value and you're around $3/day.so 100 days or 3 months sounds right but you would still need a few years to reach that magical 1BTC.On the other hand other pools with less miners might share a bigger cut to you when a block is foundbut if this will happen daily is unknown.I don't know how some people who have dozens/hundreds of miners get out of electrical costs.Even when earnings roll in faster their costs grows exponentional aswell.When I look at the cost at an ex-colleagues hosting company they charge 129/$150 per month for 4U rackspace with only 3A power consumption.I doubt that my Avalon 741 fits in 4U and it already more than 3A (4.5-5A) aswell. so the costs would be even more than that.Maybe some others can share their (pool) experiences here aswell for newcomers.

### Reply 2:
Just want to check if you've considered the Power supply cost in your start up calculation?Then seeing as it sounds like you are in a smaller space to mine, have you also thought about the noise mostly, and the heat secondly (not sure of your climate)?Other than that maybe check out this topic about getting startedAfter going through that if there are no other issues my only advice is don't wait. Find a machine at the right price and go for it, because if you only have a certain amount of time with this setup your profits decrease each day you wait. You can check out the marketplace here but read these topics before making a deal with anyone.About EscrowThis one pertains to sellers but lets you know what to look forHere is a coin profitability calculator site you can use to compare things.<link> get a decent understanding of pools, you can always check their threads here on the forum (check the pools board). Generally you can go there ask questions to get a decent vibe of who mines there and why.

### Reply 3:
Seems like this wouldn't be the brightest idea. You could only run 1 S9 with that setup.Essentially you are looking to buy a single industrial miner and PSU, to be run in a house where you live, where it will heat up quickly, on an outlet that is shared with your other devices, on a 120V line, generating lots of noise, by essentially stealing electricity, for a profit of 3$ a day.u wot m8

### Reply 4:
Would you steal your landlord's wallet from him?! You're essentially stealing from your him to enrich yourself by using extra electricity to mine cryptocurrency and electricity isn't free; someone must pay for it. You wont even enrich yourself because you have to pay for the miner and a PSU so you're stealing from the landlord to enrich someone else! Don't do it. It's not smart.

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14517,"Date: 2011-10
Topic: What Is The Highest Fee Ever Collected For Mining A Block So Far?
### Original post:
I was surprised to see 0.26 BTC in fees for one block I mined the other day.Does blockexplorer (or anybody) keep track of these things?

### Reply 1:
A short script running getblockbycount revealed that the highest combined fee so far was 6.71 BTC in block 55812<link> more recent times, there were a few blocks with fees above 2BTC. This one is the most recent:<link>

### Reply 2:
Great, thanks Raulo!At this rate, miners will probably receive more than 50 BTC per block after 2013!

### Reply 3:
Has anything higher been seen lately?

### Reply 4:
what caused the fees for those particular blocks to be so high?

### Reply 5:
lots of people paying transaction fees. ACtually it looks like one person in particular move a ton of coins and paid a fee on each movement. Probably forgot to change his tx fee setting (paid almost 10% of the moved coin to fees). I'm a little unsure as to why anyone would ever pay a fee.

### Reply 6:
Simple. Makes his transaction more important that others of lesser value. He wants it done and done now!

### Reply 7:
That doesn't really make any sense. A transaction is confirmed in blocks, and as I see it there is no differentiation between one that pays and one that does not. Unless the discoverer of a block can explicitly state ""I don't want to confirm a transaction unless it pays me > xx BTC in fees"" then all transactions will get confirmed at the same rate. Is that the case?

### Reply 8:
The highest fee a miner has payed for solving a block would probably have to be a girlfriend.

### Reply 9:
Right now fees don't really determine how fast your transaction gets confirmed I think. But I think in the future when block reward is non-existent, fees will play an important role in determining if your transaction goes fast or slow. Because miners wouldn't want to solve a block that pays almost nothing.

### Reply 10:
Someone post the script to check this please....

### Reply 11:
That is exactly the case. The pool/miner decides what is included in the block. Currently most miners include all transactions in the block regardless of fee however that is slowly changing. Eligus pool I believe only includes transactions that include a fee in blocks they mine. Also blocks have a finite fixed size. If there are more transactions than the size of the block then all miners must choose which transactions to include. Obviously they aren't going to drop any ""paying"" transactions.Thus the average length of time it takes to confirm you transaction depends on how much of the network is including you in the next block. If 100% includes you then it will be ~10 minutes. If 50% includes you then it will be 20 minutes. If 1% includes you then it will be 16 hours.Today w/ no fee ~100% of network includes you in next block.Today w/ a fee ~100% of network includes you in next block.However that may not be true in the future. Hashing takes resources and the block reward will continually decline (and eventually become 0). Mining pools will start to make decisions about how small of a transaction fee they will accept and that will start to differentiate how long various transactions<rest of post truncated>

### Reply 12:
There is now a higher transaction fee block than the first response to this thread:The block who generated the most BTC ever is block 139,896: it generated 66.20996865 BTC!from the pident factoid page.Another: There are 2,105,813 different addresses in the block chain.And sadly: Recent blocks generate, in average, 50.06200364 BTC, including transaction fees. (you cheap bastards...)

### Reply 13:
Actually only 50 BTC were generated, the fee is taken from already existing coins.

### Reply 14:
That pident factoid link doesnt work anymore. Is there a new link?

### Reply 15:
Here's the pident thread: <link> looks like he stopped maintaining the site because a version change broke his software. The source code is available, but the main point of the site was to guess which pool found a block.

### Reply 16:
Correct. However the network could adapt. If a significant fraction of people started submitting free transactions I would expect that many mining pools would simply only include transactions with a fee (or at least exclude transactions w/o a fee that ""should"" have one based on mainline client rules). The larger issue right now is there is no reason for a miner/pool to exclude a transaction w/ any fee (even a single satoshi). That isn't sustainable.

### Reply 17:
I find the experimental pident very interesting. Graphs and charts are very useful an comforable rather then text information.Thank you for the suggestion.

",[]
21831,"Date: 2017-11
Topic: Using a Thermal Gun/Camera?
### Original post:
Do any of you use a FLIR or FLIR-like thermal gun/camera to measure temps or to get an overall view of how your miners, panels and ventilation are doing in regards to temps? What are you using? Would be interested in hearing what others are doing......

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    ""hardware_name"": ""ventilation"",
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21138,"Date: 2016-09
Topic: Can connect to Antminer S7, but Can't connect to the pool and No Static IP!?
### Original post:
I could really use some help here I just bought my first Antminer S7, connected the PSU's, found the IP for the miner easy enough,logged in,filled in the pool URL and Worker name just fine but the miner will not connect to Slush Pool. While my first S7 I've had a number of S3's and a S4 and I've never had this amount of trouble connecting a miner before. I've seen others have had the same problem but no solution. It's similar to when you have two miners on the same IP or the wifi/cat both up on a S3, its just not talking to the pool while talking to my computer just fine.I tried setting a static IP, but after filling in an address, subnet and the rest, but the miner still refuses to connect, beeps and the miner looses the firmware and displays X.X.X.X in the hardware version till I reset the Network back to DHCP? Can the S7 not be set for static, that doesn't make sense?

### Reply 1:
sounds like its got a funky bios, or memory chip, if you stick it in dhcp and save setting does it save them after a reboot?, also make sure it on the router to your internet connection, no bridges and such in the way,you <truncated> tried slushpool.com:3333 by accident and got nowhere XD)

### Reply 2:
I can leave it in DHCP and the miner will at least be accessible thru the browser. My router sees the Antminer just fine. Even tried entering the miner's mac address in my routers DMZ to maybe open anything that might be closed. Everything stays if I reboot, been doing plenty trying to figure this out.

### Reply 3:
If you have a teamviewer, email us at <truncated> one of our techs will be remote in to assist you in trouble shooting.

### Reply 4:
try a different pool. <truncated> btc addressxsee if it mines therecheck it hereSolo.ckpool.org currently only displays minimal per user and per worker information based on btcaddress.To access this, enter your BTC address at the end of: <link> btc address

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  {
    ""hardware_name"": ""Antminer S3"",
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17261,"Date: 2012-09
Topic: GUIminer 2 mine 2 connecting?
### Original post:
Just had a weird problem pop up, 2 of my miners are mining while 2 are trying to connect, The 2 connected are HD 6950's and the two trying to connect are 5830's.... Any thoughts on this? They were connected before and I have a Identical set up, that has not done this yet.

### Reply 1:
Solved just deleted and reinstalled GUIminer

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10145,"Date: 2017-01
Topic: AvalonMiner 721 - recommended power supplies 230V?
### Original post:
What power supplies are recommended to this miner?

### Reply 1:
1 or 2?2 can use an ibm 2880 with a break out board2 can use a dps-2000 with a break out board2 can use a dps-2500 with a break out board.1 can use sidehack 1200 unit with a break out board

### Reply 2:
You can power 3x Avalon 7 using an IBM 2880W PSU, or 4x from a DPS-4kW setup using 1 splitter cable per hashboard. Both these PSU's require 200+V, see my sig for details and packages.

### Reply 3:
Thank you for <truncated> thinking to buy 2pcs a7 now. Avalon don't sell power supplies like bitmain so I have to make another order. I see that this ps which you mention are selling mainly in USA in europe is definitely harder to find Another option for me is buy from bitmain this bigger ps, what do you think? better take from bitmain or looking for ibm, even from USA?

### Reply 4:
You'll get a better warranty buying from anywhere else I'm sure Bitmain can be pretty bad/picky on their warranties (& they are very short for a PSU I'm sure) so try to avoid them...........I'm sure sidehack or a few others can ship PSU's & cables & have a warranty too

### Reply 5:
A PSU for using with this miner should have:1) 4 PCIE 6pin power connectors;2) more than 1200 Wt output power;3) [optional] a possibility of voltage adjust.You can take this (or some other) PSU, make and attach a cables and set up a fan on it's top side. Or sure you can buy any other PSU that meets the requirements above.

### Reply 6:
J4bberwock on the forums is based out of France, he has many different styles of server breakout boards (it is his that I sell), including common slot 1200w psu's. I would definitely hit him up. Bitmain's PSU's are fine (just overpriced compared to alternatives IMO), but I wouldn't think it would be worth placing an order from them strictly for PSU's. Especially for the size of them, they're not quite big enough to power 2x A7's so you would need 2. I would look at the DPS-2000BB PSU and board.

### Reply 7:
Bitshopper.de in Germany stocks my DPS1200 board and bundles sturdy cables.

### Reply 8:
Thanks @philipma1957, I found couple good offers on this ps, probably I will buy for sotck in case of failure.Please tell me last thing, could you recommend person or shop which selling break out boards to dps 2500 or 2880?@sidehack thank you for link but 150 euro + ship for this ps is definitely too high price.

### Reply 9:
You can check <link> owned by forum member Optimiser.Send them an email, they have the boards, psus and packages and they will give you a quotation with shipping.

### Reply 10:
okay what and why use a breakout board? My current Avalon A6 has a burned out hashboard. One board still hashing away at 1500ghs. Does the breakout board help to not burnout a board?So if When my brand new A7 arrives tomorrow. I'm going to use a FSP AURUM PRO 1200W 80+GOLD with 6+2pin PCI-Express graphic card connector ready.Using the old Rpi setup from the A6.

### Reply 11:
ok, I ordered a7 but in new version 741, I saw that this new machine is a little more hungry on power so do you think that 1 dps1200 will be enough to power 1 a741? I would like to buy separately power supplies, any other recommendation to power one a741 with one power supply?I could buy localy in good price this model (HP 441830-001 1200W DL580 G5 DPS-1200FB A 3Y warranty) - please advice me if it will be enought to 741?

### Reply 12:
Just woke up I watched a lot of late nite TV.The psu above is borderline for the 741. As to why you get a breakout board the server psu's won't start without one.I would say get a break out board from finksy/j4bberwock as you are in europe. get 6 cablesget the 2000 model breakout board it works for 3 psus' below<link> -- Good<link> -- Better<link> -- Best

### Reply 13:
@philipma1957 thank you for links but in US evrything is easier with this hardware. Shipping cost to Poland one pcs of this power supply is 85USD + breakout board + cables + another shipping for breakout board, this will be about 250 USD total. Do you think that this is still good deal? In this price I have 2pcs bitmain apw3 1600W or one apw5 2600W and they add 12 months warranty now.Please tell me, if I connect apw3 1600w from bitmain to a741 everything will be ok? I know that their quality isn't so perfect but I have couple apw working with s7 and nothing happened (yet). So please advice me.

### Reply 14:
Since you have 208-240v power, 1 APW3 per miner would be overkill but perfectly fine as would 2 miners on a APW5.Key point is just to keep total load at 80% or less of a PSU rating if possible. re Bitmain PSU quality, never had an APW5 but I can say that I have >20 of the APW3 dated starting back at the 2nd batch made up to late last year: zero issues with any of them.

### Reply 15:
Thank you for recommendation. I think in my geographical location buy apw3 is one of the top option. I also still looking for o<rest of thread truncated>
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    ""hardware_name"": ""sidehack 1200 unit"",
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    ""hardware_name"": ""HP 441830-001 1200W DL580 G5 DPS-1200FB A"",
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    ""hardware_name"": ""APW3 1600W"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""APW5 2600W"",
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]"
20777,"Date: 2015-11
Topic: Need help with Avalon 6 setup
### Original post:
I received my Avalon 6 and it came with 2 usb cables, a power outlet adapter, the special black adapter than connects from the pi to the miner, and the pi with sd card. I hooked it all up, ethernet and 1300 watt psu included, but I can't find the ip of the controller. Zoomhash, the company I bought mine from, has a 14 day max for refunds and I only have until Tuesday to figure this out or call for a refund. I have taken some advice to reflash my sdcard with settings from canaan-creative to test my raspberry, but it still won't work. It also won't connect to my monitor via HDMI. The special adapter shows a blue and green light, and the controller itself shows red, green, and orange. Here are pictures for examples. <link> <link> <link> <link> yes, I am a beginner so I'm desperate to fix this before the deadline for refund.Thank you for your timeI managed to solve that..just need help getting cgminer to recognize my avalon. I changed the ip to static and on the CGminer API log it reads Socket connect failed: connection refused

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14462,"Date: 2011-08
Topic: Bitjam.org has been hacked
### Original post:
I actually had their Java-based BTC mining code on one of my websites -- I bet the resources are being used for something other than Bitcoin now -- probably to crack passwords or something.There's some ""green party"" rhetoric on the homepage now.

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11913,"Date: 2012-05
Topic: DiaKGCN kernel for CGMINER + Phoenix 2 (79XX / 78XX / 77XX / GCN) - 2012-02-20
### Original post:
I got vectors3 working in case you're curious, speed is amazing : O

### Reply 1:
More details please ... used GPU, which kernel. I never got that working with Phoenix.And what means ""amazing"" ?Dia

### Reply 2:
Was using your latest kernel with phoenix 2 rc1 on a cayman 6970 cat 12.3New opencl version has built in support for uint3 so it might even work with your older version. It's basically just doing a typedef uint4 uint3, and it just assigns a 0 for last value of uint3 to ignore 'w'. The problem with your old kernel is you need to initialize uint3 as a uint4 firstSpeed is good because you basically get to run vectors4 (vectors3) with less alu's. Even tho 'w' is not used finding x, y, and z nonces occurs much more frequently anyways

### Reply 3:
Why can't you just init as a uint3 in the first place? Did you not change the python init file to handle the uint3 as of yet?

### Reply 4:
I did change the python init file, but just realized I accidentally set rateDivisor = 3 out of habit, and it's supposed to be 4 since you're supposed to treat uint3 as a uint4. It should work like that, but I'll finish testing tomorrowYou can't init as a uint3 in the first place because there is no definition for a true ""uint3"" in that sense, it's just a stripped down uint4 (last value is thrown out or used as a placeholder). I'm gonna work on it more tomorrow, but once I get it working this should give a 10% increase over uint2. It only uses ~920 ALUs so far

### Reply 5:
Great to see that.Be careful with speed calculations though, you might be calculating the MH/s based on that presumption that you are doing 4 nonces per workitem which is wrong.

### Reply 6:
uint3 seems to be working fine for me without having to treat it as a uint4. As a matter of fact, it's even listed in the OpenCL reference card. But wouldn't it be best to accept the extra ALUs and do the work for the 4th vector if the space for the 4th vector is already being taken up? It's sort of a trade-off. Mathematically, do the ALUs for three vectors justify the use of three or do 4 vectors give more output for the work that's done to achieve it?

### Reply 7:
uint3 is in there, but this is how it's listed/* cl_uint3 is identical in size, alignment and behavior to cl_uint4. See section 6.1.5. */typedef cl_uint4 cl_uint3;Anyways I'm still getting more init errors that have nothing to do with ratedivisor, gonna try a different version of phoenixYou'd think it would be better to use vectors4, but the ALUs shoot up to over 3000

### Reply 8:
That was quoted from cl_platform.hYou can use uint3 directly now. You don't have to typedef anything to get it to work now. Just use uint3 directly and it will be a true 3-component uint.

### Reply 9:
I am was just putting that there for reference not sure if it's in older versions? I got it working fine but there is something messed up with the output buffer it always says it's ""lo - 3"". Maybe I should stick with outputting as ulong? Why is it like that exactly, I tried doing a global output of uint3 which still works, but result.z will sometimes say difficulty is less then 1 (it's just barely outside the range too). I have no problem with result.x or result.y tho

### Reply 10:
There may be an offset in z. Try replacing them with s0 through s2 even though they're the same. It'll keep all of the code compatible with each other.

### Reply 11:
I prefer to use result.s0 and such anyways, but I don't use the offset feature as it only lowers 1 APU but raises GPR making the card run hotter. Anyways, I found time to fix it and get it working, all three outputs are good. I was mistaken with the output buffer since there is no (hi - 3) with vectors 3 as there is no result.wSo, now it correctly reports (lo - 1), (hi -1), or (lo - 3). Does anyone want to try it out?

### Reply 12:
Am I blind. whered o i download this kernel.. links on first page lead to just <link> page and nothing happens i have a 7970 to test out and im trying to go with phoenix 2.0 and diakgcn kernel. Maybe you can PM me the test version?

### Reply 13:
I only zipped the last development version and upped it here:<link> there is no current readme, but the first posting should cover everything.Dia

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20222,"Date: 2015-02
Topic: Anyone used a 8 PIN CPU to PCIe converter?
### Original post:
Something such as shown.I am thinking about getting a few of these. I got a few unused 8PIN CPU connectors which would be perfect if they werent used to power some miners. They say the 8 PIN CPU allows up to 300Watts of power.

### Reply 1:
I have, no reason not to. Just make sure you don't get a shit quality adapter made of 22AWG wire.

### Reply 2:
I have used one of them to power my Sapphire HD7950. The GPU required two 6-PIN power connectors while my PSU had only one.I used 4-PIN to 6-PIN Power converter (the one you've shown) to power the 2nd 6-PIN connector on GPU.

### Reply 3:
I cut the end off the 8-pin cpu connect and wired it to a 6-pin PCIe connecter.been running an S3+ for 3 weeks now.DON'T TRY TO WEASLE IT INTO THE PCIe SLOT!!!!!!! the polarity is <truncated> think there are adapters out there but IIRC the price of them seemed sillt at the time so I just grabbed the cutters and soldering iron.

### Reply 4:
I don't think you can plug it in because there are square and round triangle shapes so it won't fit.

### Reply 5:
With a few days' lead, I could build some of these of 16AWG wire in arbitrary lengths if it's something people are interested in.

### Reply 6:
we've used a huge lot of those for the GPUs as long as the pins match, it's all OK

### Reply 7:
+1+1+1I had one burst up in flames because the wires were marked as 18awg but on post-mortem inspection were clearly 20awg or 22awg, flimsy little things.to be honest - if you plan to use this connector because your PSU doesnt have sufficient PCIe connectors, you either need to buy some splitters (i sell 18awg MFM PCIe), or invest in a better PSU. If you're short connectors, your PSU is likely cheaply built and 80+ Bronze at the very best.

### Reply 8:
There's a point you're all completely missing. CPU connectors for the motherboard are 4 pin or 8 pin. PCI-E power connectors are for graphics card and are either 6 or 8 pin. The 8 pin CPU and 8 pin GPU connectors have completely different wire arrangements and different shaped plastic housing. They are not compatible with each other.The other point is that most high end power supplies are single rail. That means stealing power from the 12V CPU power connector with some wacky chinese adapter to put it into a PCI-E hookup is pointless. All the power is coming from one 12V rail anyway.I would simply buy the right power supply instead.

### Reply 9:
typically these have 4x12V and 4xGND from the EPS that combine into a 6pin PCIe connector. problem is they are oftem made with thin wires

### Reply 10:
I'm pretty sure everyone here understands the EPS and 8-pin PCIe are different. That's why the OP started this discussion by asking about an adapter.If you already have the PSU, and it's capable of sourcing the required power, but lacks the required number of 6-pins, it makes more sense to use a $5 adapter than to buy a new $100 PSU. Sure you could splitter your existing wires into more 6-pins, but that puts excessive load on cabling while leaving other <truncated> 12V wires unused. And still requires buying splitters - which is to say, a different type of adapter. His question, and intended purpose, are fully <truncated> not all adapters are ""wacky"" or ""chinese"".

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21190,"Date: 2016-12
Topic: Antminer S7 API
### Original post:
Hi,We have procured a batch of machines and want to observe the mining operations and capture variables remotely by putingt them out on a webpage for team to see. Is there a toolkit/API available for this.ThanksSasha

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23502,"Date: 2021-03
Topic: S9 - Hashboard red light on but don't appear
### Original post:
<truncated> retry Chain[J6] has 0 <truncated> retry Chain[J7] has 0 <truncated> Chain[J8] has 0 asicThis implies that all 3 hashboards are dead, this really has nothing to do with the firmware or anything else, if 1 hash board is dead, it usually is, if more than 1 show dead then it could be the PSU, it's very unlikely and uncommon for anything else to be the problem.

### Reply 1:
Alright I will try to low the frequence 1 by 1, but if it's work that mean that each hasboard will never came back to the original hash rate right ? Thanks for your help

### Reply 2:
This is unlikely to be the case, in fact, it's almost impossible, the reason is that during the initial chip-count the fans will be spinning at 100% and the heating process has just started, actually, the time it takes to count the chips is too short that you can even get away with no fans at all, 0 asic problem is almost never a temperature-related problem.

### Reply 3:
Hi there.I have some spare hashboard from different S9 miner that have red light on when I plugged in, but nothing appear in Miner Statut section. I'm 100% sure that my mother board is working fine, is there a way to bring them back to life ?I already tried to clean them with isopropyl alcohol, tried to install latest Bitmain software on mother board. I read on internet that it's possible to flash a software inside the hashboard with some tools, is it the only solution remaining ?I tried to understand logs, but it's like Chinese for me :s Does someone can help ?Thanks ++Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map d<rest of post truncated>

### Reply 4:
You mean about the motherboard is the control board?Can you try to test it first with one hashboard or run them one by one follow the guide from this link below to troubleshoot - <link> logs show that all chains have 0 ASIC have you tried to replace all cables it looks like this below.It might not be connected properly that is why all ASICs can't detect and also the temp is abnormal.You can try to flash the control board with an SD card if you feel it's a software issue you can follow the guide - <link>

### Reply 5:
Yep by motherboard I mean control board I'v already tried to replace the cables, also tried the same control board with others hashboard that I know there are working. That's why I'm 100% sure than control board is working.But the light of the hashboards is turning red? Because on this site I read that you can flash S9 Hashboard with PICKit3, by flashing s9-4.21.hex software. <link> you know this solution?

### Reply 6:
Yes, you can try it but I'm not 100% sure if this will fix your issue unless if the kernel log shows ""pic fw version=0x00 or 0xff"" it means that the pic firmware is corrupted or deleted. So the only solution to fix the pic issue is to flash it with Pickit 3 with working hex file.We have an old guide here on how to flash hashboard with a working hex file but it's only for t9+ miner you can find it from this link below that you can use as reference- <link> you tried to test them one by one? Then run it with low freq. If you don't know how to lower the freq you can follow this guide <link> this while testing them one by one and maybe the reason for this is because of overtemp that's why all hashboard acting dead.

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21893,"Date: 2017-11
Topic: Really need some help on why this s7 isnt working
### Original post:
<link> of the dashboard, see no reason why this isnt workingthanks!

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11615,"Date: 2011-09
Topic: Are you getting 1 BTC per day from ~1.9Gh/s?
### Original post:
At the current difficulty level are you seeing about 1 BTC per day per 1.9 Gh/s? Just wanted to sanity check my performance with others, knowing of course that there are variations in luck and other factors. Presently only using arsbitcoin.com as my pool.

### Reply 1:
Getting that minus stales and donations, but also on Ars.

### Reply 2:
Great, thanks. I had a feeling it was about right, but always helps to get a second opinion. Now if someone has an idea how to increase the BTC/day rate 5-10%, then I'll really be happy

### Reply 3:
Pool hop. All you need to do is sacrifice your dignity.

### Reply 4:
I'd rather give up a few percent and not have to sell my soul stealing other people's earnings

### Reply 5:
Sounds a bit low. The last 24 hours I've only made 0.93 BTC, but it's been averaging 1.10 BTC at this difficulty level for my 1800MH/s.

### Reply 6:
sacrifice your dignity?haha, funniest stuff i've heard today.but yeah, feel free to keep your dignity. i keep my 60% increase in output. :3

### Reply 7:
deal.

### Reply 8:
What pool are you using? Are you pool hopping?

### Reply 9:
No pool hopping, using deepbit proportional.

### Reply 10:
what's the dignity in NOT pool hopping? are you looking to maximize your performance or not?was it undignified to bring your 1.9 GH/s online?was it undignified to use a GPU when others were CPUs?was it undignified to switch to Namecoins when they were profitable?was it undignified to switch back when they were unprofitable?was it undignified to use phatk when it got better performance?was it undignified to use the modified phatk when it got even better performance?was it undignified when you chose a fee-free pool?will it be undignified when FPGA puts all GPU miners out of business?pool hopping is not some secret thing that only a few people can do. There are at least 2 methods (a proxy and modified client) that are freely available to everyone in this very sub-forum. There is another client that caries a cost of .1 BTC which is nothing for any GPU miner. You don't consider it an indignity that you use a graphics card that was assembled by people making less per day than the value of your 1 BTC? Yet, using software developed by volunteers to make that graphics card more efficient is somehow an indignity. You are confused my friend.If you want a 5-10% increase, the answer is plain an<rest of post truncated>

### Reply 11:
Quite an...indignant response...

### Reply 12:
Yikes. Who duked in your cereal this morning?Even if it is going towards a good cause, there is a distinct difference between optimizing your mining tools/hardware, and gaming the system to get credit for mining you didn't earn at the cost of another person. I don't believe a scheming Robin Hood approach to redistribution is the right way to go about things. So I am ok earning a bit less to be respectful to others.

### Reply 13:
With 2.4-2.7GH/s I'm not even getting 1 BTC per day. Lady luck has my balls in a vice clamp. I was at BTCGuild for 2 weeks only to have those horrible bad luck days (only 1 day was positive). I bailed and went to slush only to see them go negative for the last 2 days and BTCGuild of course is now running some insane 200% luck since I left.I'm going to go lay down on the freeway now

### Reply 14:
No need to do that man... heard that pool hoppers could bring luck on every pool that treats them nice, just keep yourself informed

### Reply 15:
I'm getting .75 a day with 1.5Gh/s

### Reply 16:
I've been averaging about 0.95 BTC/day with 1.8GH/s now. Sad to see it finally drop below 1 BTC. BUT, it sounds like you went to the scammy pools. Get on deepbit - they actually pay properly. I don't know what shinanigans go on in those other pools, but I've tried them, and it just didn't seem like I was getting as much on the payouts as I do at deepbit. BTCGuild especially I am suspicious of (and other people that I've seen post about them)...

### Reply 17:
I'm wondering, could a pool give to its miners shares from different rounds?I mean, a good part of the shares come from the current 'official' round, the one that is shown on the site, but some % of them are from a different bitcoind and those, when solved, give a full 50btc to the pool owner while are marked as simple shares not good to solve the official round the pool is going to solve (in other terms, they are a hidded fee for miners).Does this make sense? Is this a scam that can be done?spiccioli.

### Reply 18:
Pool hopping will be good for everyone (I think).It automates the manual reviews people should be doing of pool returns anyway.It should speed up the movement of miners alway from pool owners that don't offer the best deals to miners.In the financial markets, it's called arbitrage. Like automation in these markets it will produce some quirky results do to short term randomness. This could be an issue if everyone does it (this should happen<rest of thread truncated>
","[
  {
    ""hardware_name"": ""1.9 Gh/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1800MH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1.5Gh/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1.8GH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2.4-2.7GH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
  }
]"
23491,"Date: 2021-03
Topic: s9 chains not hashing
### Original post:
This S9 I've tried the chains in a different S9 unit but the problems persists, it doesn't hashCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel command line: noinitrd mem=496M <truncated> root=ubi0:<rest of post truncated>

### Reply 1:
It seems a hardware issue but try to flash the miner through an SD card flashing you can follow the guide from this link below.- <link> test after you've flashed. If not work try this one below.Can you try to test the miner with one hashboard to troubleshoot the issue?Follow the guide from this link below on how to test the hashboard one by one.- <link> update here with the new copy of your kernel logs.

### Reply 2:
Here is the <truncated> retry Chain[J6] has 61 <truncated> retry Chain[J7] has 0 <truncated> Chain[J8] has 63 asicS9 hashboars have 63 asics on each, if 1 or more is missing then the control board will shut down that hashboard (there are a few expectations as to which domain the asic belongs to but that's nothing to be concerned about for your case).There isn't much you can do, you need the tools and skills to physically identify the bad chips and replace them, you could try this version <truncated> it might bring one of them back to life if you are lucky, if not - then well, too bad you have two dead hashboards.

","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chains"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""asicS9 hashboards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bad chips"",
    ""hardware_is_owned"": false
  }
]"
21219,"Date: 2017-01
Topic: Antminer S9 11/ths and 13/ths to many numbers on HW?
### Original post:
I will change the category of my post since no replay. I think I did wrote on the wrong section.

### Reply 1:
Where did you post before. There is a dedicated S9 thread in the hardware section.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  }
]"
21263,"Date: 2017-02
Topic: MOVED: Need funds please!
### Original post:
This topic has been moved to Trashcan.<link> is not allowed.

",[]
21562,"Date: 2017-09
Topic: Antminer S9 - How to power in Canada?
### Original post:
So the new, amazing Antminer S9 just came out... And I really want to buy it!But the S9 needs to be powered at 1375W, and with 9 PCI-e connectors (3/board).The recommended power supply is the APW3.The APW3 needs over 220V to run, but I live in Canada, and in Canada there is only 110V outlets.Currently I'm running 2 S5 antminers on one EVGA SuperNOVA 1300 G2, which has just the right number of connectors, which is 8.So now I'm either looking for a PSU that can do 1600W and has 9 PCI-e connectors and hope it will be enough,could use 2 PSUs to power one miner,or get a 110V -> 220V transformer and hope it doesn't blow any boards or circuits.Please help me out you wonderful people

### Reply 1:
no transformers!what is this unit in ca?<link> you must run it alone on your circuit

### Reply 2:
1. Hire an electrician to install a 220V 208V (phase to phase) circuit.or2. EVGA SuperNOVA 1600 power supply.See submodels with different effiencys (from gold to titanium) below.

### Reply 3:
Or get about an 850W PSU for two boards and a 500W PSU for the third board and controller.

### Reply 4:
This is a bad idea. If a 500W PSU shuts down and 850W not, then you can get with a few hours 2 overheated blades.That's what happened my two S7 during warranty and with one S7 blade after warranty period.(Non-working temp sensor )

### Reply 5:
Hm... that is a good point. It'd take a bit of rigging but you could use the 500W to kick on the 850W, but then you violate Bitmain's recommendation to have the controller power up last. With a bit more rigging you could probably cross-latch them to avoid that problem, but if you know enough to do that you probably also know how to wire in a 240V circuit.I'm working on a redesign of my Dell 750W board and hopefully a new batch, which with that you could load-balance a pair on a common rail and get 1500W with 10 cables off 120V for about a hundred bucks. Too bad a full production batch is more than a month off.

### Reply 6:
Very nice for people ""stuck"" on 125V.My fix was mining on my Oven plug, until i got 250V. I'm guessing cloth dryer plug would work as well.

### Reply 7:
Thanks for the replies.My neighbor is an electrician, but I think it would be safer and easier just to go with the EVGA SuperNOVA 1600 G2. I didn't know it had 9 PCI-e connectors. Thanks again guys!

### Reply 8:
We definitely do have 240V here in Canada, almost all homes use ""split"" single phase, where the power in to your panel is 240V and separated to half-phases of 120V. As Virosa mentioned, oven and dryer plugs can be wired for PDU's to power PSU's. If you have either room on your panel, or two adjacent unused 120V circuits you can have an electrician convert them to a single 240V. If you do end up going that route, let me know as I sell server PSU's fully capable of running S7/S9's (2x units per 2880W PSU) and am also in Canada. The EVGA units are nice, but the extremely high price makes ROI much more difficult (they are $430 CAD on Newegg...)

### Reply 9:
This is exactly what I've been looking for. I'll be waiting anxiously for this. Perfect right after the halving too so we know where BTC prices, difficulty and hardware stands.

### Reply 10:
Dell makes a 750 watt titanium server. If it has the same pi out as the standard 750 watt dell it would be great.If you give me the,dell part number for the dell your board uses I will try to figure out if the dell titanium has the same pin out

### Reply 11:
I believe that his old board used the Power Edge 2950 PSU. I'm hoping for something similar to the 4k breakout boards where you can just stack or place side by side two 750s and the board plugs into both PSUs and bridges them for you or will it be something that you have to hardwire together yourself?

### Reply 12:
I've had interest in something I was already thinking of doing, adapting the 750W board to take screw terminals or 6-pin jacks like the new DPS8/12 board. The all-in kit I would provide would be two boards with 6-pin jacks and 11 cables - one about 6 inches long. There'd be a jumper wire in there to tie the SHR pins together to load-balance the two PSUs, and you'd use the short cable to jack the two boards together and establish a common rail. That leaves five jacks per board just right for an S7 or S9.I could build a single dual-PSU board, but since the same functionality could be provided with two regular boards and a $2 cable I'd rather not have to split my resources between two different board runs.

### Reply 13:
Good PSU's are not a bad thing to have around they will likely still have value even if you decide to sell it one day. I highly suggest keeping all packaging/box/etc and put in corner if for if you sell that is what I did with all my old ATX PSU's.If you get into it getting a proper 220/240 with PDU is very nice to have. You might check before you spend that kinda money on PSU if your neighbor would do it for decent. <rest of thread truncated>
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5 antminers"",
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  },
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    ""hardware_name"": ""EVGA SuperNOVA 1300 G2"",
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  },
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    ""hardware_name"": ""EVGA SuperNOVA 1600"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""850W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""500W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Dell 750W board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""EVGA SuperNOVA 1600 G2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""server PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Dell 750 watt titanium server"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Power Edge 2950 PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DPS8/12 board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ATX PSU"",
    ""hardware_is_owned"": true
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]"
15985,"Date: 2017-11
Topic: [11.2kW SOLAR/WIND/MAN] NastyMining Green Energy Project ☀️💨💪
### Original post:
Ive been trying to think of a way to go hydro for a while. Unfortunately in the desert, that is a challenge. I have a drainage channel behind my house that would actually work perfectly, but it only rains about 10 days per year here.

### Reply 1:
The SportsArt ECO-POWR G510 Indoor Cycle has arrived and been assembled. It has successfully generated it's first hundred Wh and is sure to be another interesting element to this project.(stock photo)

### Reply 2:
This Green Energy Project was mentioned in a recent newscientist.com article about Bitcoin energy usage. <link>

","[
  {
    ""hardware_name"": ""SportsArt ECO-POWR G510 Indoor Cycle"",
    ""hardware_is_owned"": true
  }
]"
20698,"Date: 2015-10
Topic: Buy mining servers
### Original post:
Hey,Where i can buy mining server to mine bitcoins on <link> ?Regards.

### Reply 1:
you need to look for ASICs. CPU/GPU/Server mining of Bitcoin is dead. Search for things like S7, S5, etc. These are specialized mining machines that can and do only one thing - mine SHA256 coins.

### Reply 2:
Yeah but there are any website that provide ASICs mining hardware? And we pay and just put the stratum url etc etc. ?Regards.

### Reply 3:
Entire forum dedicated to it hardware: <link> asics are needed if mining BTC. No longer will GPU/CPU mining work on mining BTC.

### Reply 4:
There's any website where we can rent?

### Reply 5:
Sure, but renting can be a zero sum game. Nicehash.com is a popular option.

### Reply 6:
Hum.. ok thanks.

### Reply 7:
I'm guessing by rent you mean cloud hosting? Its kind of marginal profit at best, unless BTC goes way up, but you can check out HashNest; <link> Bitmain's so it one of the very few service i would trust.

### Reply 8:
Thanks man!

### Reply 9:
There's also betarigs.com and <truncated> where you can basically rent people's machines and point their hash where you want. But you have to make sure you're getting what you pay for. Some people rate their machines higher than they actually hash and you're charged the rate they charge.

### Reply 10:
Looking to hear from u OP...

","[
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  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
  }
]"
10115,"Date: 2017-01
Topic: Watt Meter
### Original post:
Can anyone recomended good but not too expensive power-draw meter one you plug into socket. Preferably one i can buy on eBay or something like that.I'm from Europe.

### Reply 1:
I bought one from eBay didn't have a manufacturer. It has an digital display with four blue buttons for the different functions. Can't tell you much more than that.

### Reply 2:
For example<link> A Watt manufactured by P3 InternationalMight have a different name for European market..Code: The factory is the Taiwanese company Prodigit, which also makes 230 Vac models of similar appearance and functionality for European Schuko..

### Reply 3:
How did you search for it on eBay?

### Reply 4:
I searched for what you have in the title of this thread If that doesn't work try power meter and your voltage i.e. UK is 230v.

### Reply 5:
If you're from europe: the ALDI market (i suppose they're in most of europe) has these meters about once a year, they cost like 7 (IIRC).

### Reply 6:
I've been curious about these, are there cheapish ones that can handle 1-2kw power draw?

### Reply 7:
Does one of your units draw out 1-2 kW, or is that a total usage of our rig? If it's only one unit, you might want to contact an electrician, which should have some proper Watt meter on hand. Otherwise just use standard cheap meters at each connection point, and then add up the usage. That would also make it possible to see the usage of each unit in your rig.

### Reply 8:
Thanx for answers

","[
  {
    ""hardware_name"": ""power-draw meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Watt meter from eBay"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Watt meter by P3 International"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""230 Vac models by Prodigit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ALDI market power meter"",
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  },
  {
    ""hardware_name"": ""Watt meter for 1-2kw power draw"",
    ""hardware_is_owned"": false
  }
]"
4106,"Date: 2012-06
Topic: Wierd card with FPGA on it
### Original post:
<link> wonder if this can be utilized to mine?

### Reply 1:
could you mine with it? probably. Do you have the expertise to write the driver and program a bitstream? doubtful.

### Reply 2:
Somebody should revive this thread:<link>

","[
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]"
23828,"Date: 2022-01
Topic: Canaan Avalon A1246 Stopped working
### Original post:
Happy New Year to everybody! Wish you a lot of happiness, health and prosperity!I have 2 x Avalon Miners A1246. They work in a really rough environment (I had no where else to put them) where it has a lot of dust / straw particles and lately due to winter a lot of humidity. One of them, after an Internet blackout failed to come back on. What I suspect happened is that that particular night had a lot of humidity, the miner did not have Internet connection and therefore it run cold (no hashing) for 3-4 hours. The fans were working therefore the humidity was entering normally. I cracked the miner open today and the hash boards are in a really bad condition. Dust everywhere, sticking around all the circuit components throughout the boards. I cleaned all the connections and components on the top of the hash board where the cable connects to the board but nothing changed. What do you suggest I do? My next option is to remove the heat sinks clean and put thermal paste again but I am not sure how I should preform this kind of cleaning. Would a contact cleaner spray be okay? I attach my error log for consideration. I will try and take pictures as well. I would appreciate if there is a way t<rest of post truncated>

","[
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    ""hardware_name"": ""Avalon Miners A1246"",
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  },
  {
    ""hardware_name"": ""hash boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heat sinks"",
    ""hardware_is_owned"": true
  }
]"
12015,"Date: 2012-08
Topic: ANUBIS - a CGMINER Web Frontend - Fork/Update
### Original post:
I decided to fork this project and put some work into it. Here's the github: <link> added AJAX updating to the index page (would be nice to port that other places too) with a configuration option for the update timer (defaults to 5 seconds, access in the config page). It keeps it in the configuration table of the database like it should. I update the schema, so it should be plug-and-play. I also made it so if you put in fan speeds of zero for yellow and red, your fan readout will always be green (I keep my fans at 100% all the time, and I hate seeing red). Also, someone suggested making temp colors red on zero readings - I did this for at least some temp readouts, but I'm sure there's some I missed.I also did a BUNCH of work to the CSS and images for the theme. Here's what I came up with:More pics at: <link> hope you all enjoy!

### Reply 1:
ralree: is it possible to make a ""view only"" version or make it configurable somehow?it would be very useful if you wanted to create a anubis site where others could view it without having to worry about them screwing up your <truncated> for this contribution.Tom

### Reply 2:
That's in my plans. Right now I just have it hosted over SSL with HTTP Basic Authentication, but I want to make it so for non-authorized clients (people clicking cancel on the HTTP Basic Auth), they can see the view-only version like you're suggesting. I messed around with copying/symlinking the code to a different location and modifying configs, but then I realized it's hard to configure it so it's view-only without turning off API writing in cgminer. I'll figure out a way to do that soon when I have time.1. Thanks for the tip - I meant to commit a <truncated> file like I did with the auth file, but I must have forgotten to. I'll fix that up shortly.2. It would be nice to make some scripts for upgrading the schema - keeping a schema version in the database and making the right alter table statements to upgrade. Of course, I don't expect the schema to change all that often, and it's so quick to configure it's probably not worth the effort. For now, I'm just going to keep it as is, but if I end up developing this a lot I'll add in DB migrations.

","[
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    ""hardware_name"": ""fans"",
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  }
]"
24093,"Date: 2023-02
Topic: Error fan lost on s17 pro
### Original post:
Lost fan errorI have tried to change the 4 original fans of the s17 pro by noctua 3000 rpm fans but it puts me in error, the asic doesn't start, but the fans are running. I have rebooted, reset, put back the Os (hiveon) but nothing. I put the old fans back in and still the same problem. I don't know if it's important but I'd made sure to put them in the same place.thanks

### Reply 1:
Please post your full kernel log (or at least the last 100 lines or so) so we can see exactly what is going on. Incidently, Bitmain fans usually spin up to 6000RPM, so these may not be a suitable replacement.I've had several compatibility issues with 17-series miners and fans (even using fans purchased directly from Bitmain). I found that I had to use custom firmware that forces 100% fan speeds to get them hashing...

### Reply 2:
Before you get copy and paste the kernel logs here make sure that you flash your unit with stock firmware. I don't have experience using Hiveon OS I usually use this OS only for GPU mining.Also, check the fan terminals and plug maybe it has some dirt and is full of rust try to clean it with any motherboard cleaner like Lacquer flo thinner/lighter fluid. If you have a multimeter better check terminals if it's shorted or has no resistance.

### Reply 3:
I'll try to clean up and double check everything and I'll share the core info if it happens again.I have tried rebooting and resetting to the original firmware but the old one is still there. How to reset the firmware from bitmain (instead of hiveos)thanks a lot for the feedback

### Reply 4:
Have you tried to flash it through an SD card?If not yet you can follow the instruction from the link below.- Control board program recovery guideAnd then download the SD card image from the link below- <link> the drop-down arrow and put it to other and then on the right click the drop-down arrow and choose flashing SD card with image.

### Reply 5:
thanks a lot

","[
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  },
  {
    ""hardware_name"": ""noctua 3000 rpm fans"",
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  {
    ""hardware_name"": ""Bitmain fans"",
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  {
    ""hardware_name"": ""multimeter"",
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    ""hardware_name"": ""SD card"",
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21696,"Date: 2017-10
Topic: How to track power
### Original post:
Hey guys, First post here. Building out my rig and was wondering if anyone is tracking power usage? I would like to track each rig from a current and historical (daily and monthly, most likely) perspective. Anyone doing this and how? I've looked over tons of options and just haven't found anything that does this historically, yet. I see the Kill A Watt stuff looks closest, but it is all read-out instead of either web-server and historian or a protocol I can store myself.Thanks in advance!

### Reply 1:
You can use the Kill A Watt / Belkin options if you are using 120V but fewer options at 240V.Are you using a Smart PDU? I just received my apc ap7911a and it has the ability to monitor current usage by outlet. I can let you know in a few days if it has any graphical / historical features after this weekend.

### Reply 2:
I had looked around at Triplite, but hadn't found any prices (for new) - only eBay. I need to get more info on how those track per-outlet power. I'll do a bit more research on those - thanks for sending me down that path.

### Reply 3:
I use multiple TrippLite UPSes that track my load on my 220-240v miners.

### Reply 4:
Kill A Watt if you're running a smaller operation. Electrical sub meter for a larger operation. I'm interested in what other people have to say as well as I'll be renting out a small warehouse soon and will need a separate electrical service installed.

### Reply 5:
Best case is that you would have a dedicated distribution box for mining gear and a dedicated energy meter for that.It is also possible to have multiple groups (one phase or three phase) measured with these DIN rail mounted energy meter for exampleSearch Google with words ""schneider electric din rail energy meter"" for example to get the picture what I mean.

### Reply 6:
A Smart Meter might be a way to get an average increase in your electricity

### Reply 7:
You could use one of these things: <link> a wall plug that changes color to indicate the wattage drawn and it connects with a main router that allows you to access all the plugs via wifi. You can then use your mobile device to turn each of them on/off and see the power usage graphs.

### Reply 8:
You could also use a ""ferrite core"" type meter that slips a large inductive current reading toroid over the cord of each miner.A lot of them connect to the power line for voltage to run the meter on, and to read that voltage so they can give you a wattage output.I've seen them get FAIRLY cheap though the accuracy of the cheap ones isn't all that great.

### Reply 9:
Thanks for all the replies! I think I will end up with the Schneider power meter since it has Modbus connectivity. That will allow me to record the data historically, which is perfect for my purposes.Thanks again!

### Reply 10:
I'm so glad you asked...It's clever slippery fucker <truncated> tracking is Old tradition in my familyI am third generation Native power tracker...I am also a power Whisperer..I train Power tracking dogs.I can track power over streams and through deep snow..Mountains & deserts.I have trained MANY young power trackers..Wrote many books on power tracking, lectured at conferences.I have very affordable rates..I have CD course for purchase and offer personal power tracking consultations by appointment.I have a staff of fully qualified power trackers able to assist you with all your power tracking needs...We are TrackPower.com and HOWTOTRACKPOWER on youtube...We are also experts on Power traps and snares....power hide and leather prep. and power taxidermy...Live Bait for power <truncated> I just look at the bill the electric company sends me..that works fine

### Reply 11:
I use sonoff devices to monitor my rigs. Link: <link>

","[
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  },
  {
    ""hardware_name"": ""Smart PDU"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""TrippLite UPSes"",
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  },
  {
    ""hardware_name"": ""Electrical sub meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DIN rail mounted energy meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Smart Meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wall plug"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ferrite core type meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Schneider power meter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sonoff devices"",
    ""hardware_is_owned"": true
  }
]"
16552,"Date: 2023-07
Topic: Your experience using used miner please?
### Original post:
How long does your used asic miner lasted for? If you are using used mining equipment please drop your results on here, have you ever bought a particular used equipment that lasted for years with no problems at all? For how long actually?Could you advise someone to buy used Asic miners too? Or newer is safer? Does new or used matter? Do new asic miner have problems in the short term too?

### Reply 1:
Buying used ASICs can be a great thing, depending on the opportunities you have. To a large extent, it all depends of the ASIC model and the reseller.I've bought all kinds of used miners and never had a single problem with them. Some have been running continuously for years, without ever having had the slightest problem. Some models are less reliable than others, and I personally wouldn't buy some used S17s from some batches, or, for example, I'd never buy a used S9k, because even when they were new, they were complete pieces of shit ASICs.But the model doesn't tell the whole story: I've bought 90 L3++ used (from a good reseller) and never had any problem, apart from a few PSUs that failed, but that's perfectly normal.Another time, I bought a dozen L3++ from a random seller on Ebay (a seller located in China), and out of the 10, only 4 kept all their hashboards in a good working order. I had the first problems after 4 days of use, and this went on for 1 year.For example, the S19pro is excellent and reliable, as are certain Whatsminers. But that doesn't mean I'll buy one of these from a random reseller : choosing your seller is very important.The reputation of sellers is an importan<rest of post truncated>

### Reply 2:
I looked at the problems of the ASIC you want to buy. Will you be able to check these asics or ask another miner to check them before buying?

### Reply 3:
I think it depends on the old owner how he maintains their miner but I don't think if they will tell you that their miner is well-maintained.If you are a newbie and planning to buy a used Miner I suggest better buy new units from Bitmain because it comes with a warranty anytime you can send the unit back to them once you experience some issue within the warranty period. Antminer 19 series have 6 to 12 months warranty.It is safer than buying 2nd hand units that doesn't have a warranty and you don't know if the unit is well-maintained.

### Reply 4:
I owned three kias. So I could be kiakiakia.A lot depends on the seller. I live in NJ. I have a seller repair guy he lives in Roslyn NY.I can drive to his business pick the gear up and he will repair any bad gear I have. So if you can do thatyou should buy from A guy like that.But buying from ebay is meh.

### Reply 5:
Why does a miner sell his mining equipment?If you buy in China on the Alibaba marketplace, then such a purchase is risky. If this is your first experience and you do not have a trusted partner who guarantees the quality of the equipment, then it is better to buy a new ASIC. I don't know how good a price you were offered, but there are a lot of circumstances in such a case. I would not give advice until I found out the cost of new equipment and the condition and time of operation of a used ASIC.

### Reply 6:
I completely agree with your message; however, can we say that Bitmain's waranties are a good plan?They take a long time to manage your ASIC once they receive it, sometimes several months, not to mention the high fees if you're geographically far from them. The problem with Bitmain is that even if a single hasboard is broken, they'll tell you to send the whole unit back. Whereas Whatsminer, for example, will accept that you send them only the defective part, and will generally process the swap more quickly. This greatly reduces shipping costs and turnaround times, and in the case of a defective hashboard, you can continue to use your ASIC without the said board during the process time.

### Reply 7:
Sorry to hijack this but.Roslyn? There is a good gear repair person here on LI and I didn't know. Yeah, I know I didn't ask. Which, brings up the point of should we have 1 common heavily moderated post of people who do repair work and their locations. It is entirely possible that there was a discussion about this person and I just missed it.-Dave

### Reply 8:
In my opinion, I'd rather invest in new ASIC miners because they are generally considered safer since they come with warranties and support from the manufacturer. And since they're new, they're likely to be more efficient in terms of hash power and power consumption.The only downside that I can think of is they are more expensive.

### Reply 9:
I do have experience buying used miners and I bought it just for fun it is Zeus Hash with 1 MH Scrypt. Short answerIs profitable? the short answer would be no. is worth it? no, unless you mining just for a hobby and paid full electricity from your own pocket. Long answer is profitable? it could be if you rent <rest of thread truncated>
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    ""hardware_name"": ""S19pro"",
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15542,"Date: 2015-06
Topic: MOVED: Bitcoin Generator?
### Original post:
This topic has been moved to Trashcan.Reason: advertising link shortener

","{
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20945,"Date: 2016-02
Topic: Antminer U3 Minera/low Ghs
### Original post:
Do they both have original power brick? Have you tried swapping PSU's between the two to see what it does?Just hard to say, not a whole lot of info do we have to help.

### Reply 1:
as mentioned above try and change the power supply. i assume you are running them through a rasperri PI?

### Reply 2:
RPI is pretty much guaranteed I think with minera. OP logged in today and did not add anything.... so this thread might be dead without more info.But my idea about power bricks I still think has a highly likely chance of being part of it.

### Reply 3:
Hello sorry I haven't replied sooner you were spot on it was the power brick.

### Reply 4:
Glad it is fixed! It seems a lot of times it goes back to power brick glad that was all it was!

### Reply 5:
Just out of intrest, couldn't you run Minera off an old PC instead of a RASPERi PI

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    ""hardware_name"": ""PSU"",
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15628,"Date: 2015-10
Topic: How do bitcoin updates work
### Original post:
Still trying to understand the basic functionality of bitcoins and mining so forgive me for what may seem like a foolish question.As Far as I understand All variables like blocks until reward halves, hard limit on block size, seconds to difficulty change, maximum cap, etc are all built in to the blockchain and can't ever be changed anymore to ensure decentralization. On the other hand bitcoin has multiple updates and from what I get outdated mining software can not be used after 95% of the last 1000 blocks have been made by the newest bitcoin mining software.So my questions to the community are: #1 Is it possible for bitcoin to change variables in the future like: blocks until reward halves, hard limit on block size, seconds to difficulty change, maximum cap, etc?and #2 Why will older clients not work after updates?and#3 How does bitcoin ensure that no competitor client could ever change the blockchain in a way that would disable the bitcoins default mining software?Hope someone can help me understand this a little more in depth. Thanks in advance.

### Reply 1:
The answer to all of those is ""yes/no - because (network) consensus""1. It's entirely possible to change the reward halving schedule, or even remove halving, in a new set of rules - but unless you get the majority of the network to agree to those new rules, any blocks you generate that go against their rules will simply be rejected by them.2. Older clients won't work because A. if they're used to mine against, they would be creating invalid blocks (see above) or B. if they're used for verification they simply won't know what to do with transactions/blocks that use the newer rules or find them in violation of the older rules, and won't accept and/or relay them. If the majority of the network has updated, that effectively means your client will be stuck in the past.3. There's nothing preventing that, other than the network consensus. The network - whether you view that as miners, nodes, services - isn't likely to adopt such a change without some very serious discussion and agreement overall.You can see this sort of thing with the recent block size change proposals. There's nothing to stop people from making software that has different rules, like XT with BIP101, but (in this case) any<rest of post truncated>

### Reply 2:
Thank you ""therealsteve"". I found your answers very informative. Thank you very much for taking the time to answer my questions in such great detail. I have been researching this for a few days now and have gotten quite confused. I think I am finally understanding the fundamentals thanks to you now. 3 Cheers to you!!

",[]
20409,"Date: 2015-05
Topic: Cant SSH into s4
### Original post:
Hey guys, currently have quite a few s4 miners up n running, all but one wont let me ssh. When entering username-root password-admin is says invalid password. Performed several resets and still nothing. I can login using webpage just fine enter the password change settings n so forth, but even when i go into <truncated> to change current password it still claims its invalid. I've flashed the newest firmware to it few different times thinking it was a bad flash but still the same issue. Any ideas?

### Reply 1:
are you logged as admin? otherwise if this is a vps that you have purchased you could ask the provider for a hard reset of your password

### Reply 2:
its not a vps, its connected right to my home router, i can login 192.168.2.xxx using root/root for user/pass and change whatever i want. but if i try using putty login as root/admin or even root/root it says invalid password.

### Reply 3:
try with mremoteng and set ssh version 2 under protocolbesides this are you using the correct port with putty? or you need maybe to forward it through your router

### Reply 4:
This could be it, each router must have a local ip; putty should try to access an specified S4, that means that it would be, depending on your settings something like:192.168.1.xx <- 1 antminer s4192.168.1.xx+1 <- another antminer s4 and so on, You have to use different ports for each s4 (update their internal configuration) and then, on your router 192.168.1.1 <- you should forward connections from the outside to each s4 using the port established for it. If you need further help, please, let me know your router so I can point you where to go.

### Reply 5:
definetly not a port issue, i have 4 s4 miners i can ssh into 3 of them just fine including 5 s3 miners

### Reply 6:
Try using different ip address & change the utp cable.Don't forget to restart your miner & pc after changing miner password & ip.

### Reply 7:
having a similar problem did you by any chance figure out why you can' shh in. I use to be able to do it no problem. Are you by any chance using westhash firmware?

### Reply 8:
That's quite curious. It definitely wouldn't be a port issue if your actually getting a password prompt and being told what your entering is invalid. My guess would be that the password has been changed from default but that should have been fixed when you did your first factory reset if that where the case. Quite puzzling.

### Reply 9:
If a factory reset does not do it I would try firmware. Try a newer firmware and don't check keep settings. It should go back on ssh when doing this. (Firmware updates can go wrong if loss of power, etc, etc). But I think firmware is what to look at.Heck you could clone one of the sd cards on the working ones, change ip after. And that would for sure do it and would keep settings.

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20182,"Date: 2015-01
Topic: 2 x Bitmain Antminer U3 not running the same speeds?
### Original post:
I bought 1 U3 miner and got it running with cgminer 4.8.0 on Ubuntu. I had some serious issues getting it going, for some reason the supplied USB did not work and as soon as I used another it went up and I overclocked a bit. Got a nice stable 59.9 Gh/s at 780mV/238Mhz - using the stock PSU and I heard it can melt if you go over 790mV. Whatever, i am happy with ~60Gh/sI ordered a seconds one after selling my old stuff. Again, USB cable problem, kept on going zombie and didnt detect it properly for a while.I unplugged the first one I got, powered down the machine, used that USB cable, powered up with the new one Solo with OC settings. It detected fine but its only running at 45Gh/sI plugged in the first one with another USB cable I had, hotplug detect, jumped straight in and went to 60Gh/s.Ok, so I removed the OC setting and run cgminer again then it started up fine, detecting both units. But now the new unit runs at 30Gh/s and the 1st unit at 40Gh/s.Wierd? I turned on OC again and tried various USB ports and a few other USB cables. This new, 2nd unit just wont go over 45Gh/s - Is it normal for such a large deviation in hashing?My pool reports 112Gh/s but cgminer says 104Gh/s - but I<rest of post truncated>

### Reply 1:
I think its a duff.I have been searching for hours and nobody else has anything similar to this. since cgminer 4.8.0+ it should just work with all the fine tuning handled in the background.I hooked up a dedicated PC PSU and set it to 250mhz/800mv and the first one I got is sat stable at 62ghs and this second one, it will not budge. Between various setting its stuck at 45ghs and wont go more.. get a new one and see what happens, return this one

### Reply 2:
Probably dead chipI am not sure if this can work but you can check it by running command under cgminer <truncated> statsYou need to compile cgminer-api first:Code:gcc api-example.c <truncated> <truncated> -o cgminer-api

### Reply 3:
This would answer a lot of questions with quite a few of us having problems with this U3. It would explain why we can't get anything above ~43Gh/s.

### Reply 4:
Hi,Sorrydid not have time over holiday to compile cgminer API.I just got a new one and replaced it. Now both of them run pretty stable at 60ghs <truncated> they go ZOMBIE every other day for no reason. I even used a timer plug to power down 4 times a day for 15 minutes to try and solve the ZOMBIE issues. Usually all I have to do is power down the units for 5 seconds power up and they start running in cgminer again. But I think if I do this too many times without restarting cgminer it just goes mental and everything crashes. So I got to stop cgminer, power down, start cgminer, power up, and it works again.<link>

### Reply 5:
Nope, My timer switch doesnt work to well. Once a U3 ZOMBIES out, I gotta go into my secret lab and pull the USB cables, power down, power up, and plug the USB back in.It just does this the whole time. Even sometimes if it does not ZOMBIE. I just restart cgminer it will do this. [2015-01-02 17:27:10] AU3 0 attempted reset got err:(0) <truncated> 17:27:11] Accepted 06aad484 Diff 38/16 AU3 0 pool 0[2015-01-02 17:27:13] Accepted 0f623523 Diff 17/16 AU3 0 pool 0[2015-01-02 17:27:15] Accepted 023141f2 Diff 117/16 AU3 0 pool 0[2015-01-02 17:27:15] AMU 0 GetResults usb read err:(-4) <truncated> 17:27:15] AMU 0: Comms error (rerr=-4 amt=0)[2015-01-02 17:27:15] FAIL: USB get_lock not found (5:102)[2015-01-02 17:27:15] AU3 0 GetResults usb read err:(-1) <truncated> 17:27:15] Icarus detect (5:102) failed to initialise (incorrect device?)[2015-01-02 17:27:15] AU3 0 attempted reset got err:(0) <truncated> 17:27:15] Accepted 0bed6b94 Diff 21/16 AU3 0 pool 0

### Reply 6:
I find that I have to quite cgminer, turn off the power to the U3, physically unplug the USB's from U3, turn on power, plug in USB and start cgminer, then I got another 16-24 hours of mining before it goes ZOMBIE

### Reply 7:
What kind of psu did you use?

### Reply 8:
computer power supply 450watt

### Reply 9:
I mean what brand & type?

### Reply 10:
Does it really matter? Its not a cheap Chinese thing for sure. I used it to run a server for a while with 6HDD's I know its capable of powering the units. But maybe I am just being ignorant? What make would you recommend and why?

### Reply 11:
Maybe, but since you said it can run 6 hdd, then we can pass the psu.The other culprit maybe overheat. Some already open the heatsink & report that the work around the chip is a mess.

### Reply 12:
Yea I have 2. I opened one and cleaned all the paste very preciclsy and with proper tools.It seems to have fixed the problem. But now the other one also runs fine. So its wierd. Still trying to work out. Some people say to use a powered USB since the U3 might use a bit more and cause reset on the USB port and force a ""crash"" on the driver.

### Reply 13:
Using powered usb hub is not a bad idea. Just fi<rest of thread truncated>
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23985,"Date: 2022-07
Topic: Avalon A1246 Repair Manual
### Original post:
Hi everyone, does anyone have any repair instructions or info for the Avalon A1246 hash board? I was looking for an introduction, but I only found its installation manual, nothing to do with hash board repairs

### Reply 1:
Currently, no one yet sharing a repair manual for this unit.If you want to learn how to repair them maybe this link below will give you some idea of how to repair the A1246 hashboard.- <link> not discuss here what exactly your miner issue is?

","[
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10269,"Date: 2017-05
Topic: Can I use 1 PSU or should I use 2?
### Original post:
For a 7x GPU RX 470 4GBCan I use 1 platinum rated 1200 WATT psuOR2 Gold rated 750 Watt PSU? What would be better? Im think the 2 PSU more wattage and more connectors.

### Reply 1:
Ya know, you will get useful answers if this is reposted in the ALTCOIN sections... Bitcoin mining moved away from GPU's years ago....

### Reply 2:
Maybe we should get a sticky-thread disclaimer for that, since we're getting like four GPU question threads a day now.

### Reply 3:
Could there not just be a dedicated ""Hardware (Altcoins)"" section set up in the Altcoins section of the forum?

### Reply 4:
JaAs like seen on to of the >Mining page <link>

### Reply 5:
Starting to think four a day's a lowball.

### Reply 6:
I would point out that even Litecoin moved away from GPUs a few years ago. I think people forget that this is a Bitcoin forum with a little corner reserved for altcoins.

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20754,"Date: 2015-11
Topic: Solar powered USB stick setup, need powered hub that can be powered via USB.
### Original post:
I am not sure i understand, is there simply a problem with using powered USB hub ran by a AC-DC PSU? From there you can use a USB Y splitter if you mean to get more power from the Hub to the stick. Especially useful to get more hashrate from the yummy Gekko Sidehack stick.

### Reply 1:
pm me if you'd like more info.I have some experience with sorting out power supplies for various rPi and connected things.I can say what is in my known-good combination for running an rPi off batteries and solar.

### Reply 2:
search for earth battery

### Reply 3:
Oh, i see now. Sorry, i don't know how to do this. If you used a Y splitter, plug one into the controller and one into the solar hub, i think you might be crossing current which i believe to be very bad, because they would not be feeding exactly the same voltage. If that was not an issue, this would work.A USB port only feed max 300mA and 500mA i believe, so i don't see how you could feed a usb hub from a usb port in the first place. Maybe there is a hardware hack possible to feed the current from the solar panel to a battery, then the battery feed the current needed to the Hub, with either a hack or using a barrel adapter.You're going to need specialized advice here, maybe RichBC or someone else with good expertise like Sidehack will read and comment.

### Reply 4:
The battery only has USB output? Because i don't know if a single port can handle all that load. If you had a battery that can output all its power through a single connector(if it can through the usb port then good), then power the hub and the Pi, then plug the hub in the Pi, then 2x 5.1 2v output could give you 16 watts to play with?Just not sure what you would do with a 5.1a 2v output.

### Reply 5:
I think the bottom line here is that you have 5.1V and 2A , so 10.2W to play with. Not sure what the Pi takes but let's assume 500mA so 1.5A / 7.5W left for the Miner. So that should be good for running the stick at about 250MHz or if you want to run for longer then clock it down to 100MHz where I guess it takes about 4W.Which brings us to what I think will be a bigger issue, what happens when the battery runs down? Left to it's own devices at some point either the Pi or the Miner will stop, if the Sun's out the battery will begin to charge and after a while there will be enough power available and everything will start again. However as you will likely be consuming more power than charge it will stop quite soon.So ideally you will need something else (Running on the Pi?) to take control and wait for the battery to get a good charge before starting the Miner? A simpler strategy might be to charge the battery during the Day & mine at Night?Rich

### Reply 6:
The idea was to use a xiaomi 20,000mAh battery this seemed like enough to make it through the night and the 20w solar panel to charge it to full while also still giving power during the day, I am not sure if this would be enough though.[/quote]It would be great if it could work like that, you will however find that 20W from the panel will only be available in full sun and during the middle hours of the day. Although I suspect you are much better off than we are in the UK. You would ideally need 12 Hours of full sun for 24 Hour running, but will not get that so some sort of management is going to be needed.Rich

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22771,"Date: 2018-10
Topic: 3-phase power potential problems.
### Original post:
My newest problem: I am about to add a 1000 Amp service to my building for running miners, my problem is the service will be 3-phase and the miners run 240v single phase, how do I get from 3-phase 408v to single phase 240v? I've seen some 3-phase PDUs, is this what I need? Obviously, I need to balance the load or it will burn the transformer out.Thanks in advance, Frank

### Reply 1:
If you've got 3-phase wye at 408V line-line, your line-neutral should be 240V.Three-phase comes in so many different configurations of source and voltage you'll have to explain your setup a little better to get good advice. And also hope NotFuzzyWarm is paying attention. That guy knows things.

### Reply 2:
Who, lil ol' me? Firstly, considering the amount of power you are adding I assume you ARE using a licensed electrical contractor right? If so - they already know what you need to have done and can explain it to you... Something like this is NOT for DIY!As Sidehack said, assuming you are getting wye (aka star) incoming service then you will already have 240VAC from each phase to the Neutral so that part is fine.If the incoming is delta then you will need a transformer to change that from the 408 delta to 208-240V and gets a little more complicated: If you do not need any 110v service then the transformer can be for 208-240V phase-to-phase with no Neutral connectionsFrom the incoming service entrance, split off into a few main 3-phase feeders @ around 250-500A each to feed distribution breaker panels filled with 20A breakers. As for balancing, as long as the breaker panels are mostly used only to feed miners and all breakers are same size they will balance themselves out as you add breakers. The slots go L1, L2, L3, L1, L2, L3, etc.

### Reply 3:
Whoa thats a lot of power. Like Fuzzy said you need to use a licensed electrician. Rule of thumb, if it hums hire someone. 480v is no joke and should be dealt with accordingly. What you are trying to do is easy as long as they are legit. Good luck.

### Reply 4:
Thanks! We're also setting up some large natural gas gen-sets and your answers helped with that too.We're going to be using a primary transformer to step down the 480v to 240v. Thanks again!

### Reply 5:
Ah, 480VAC -- not 408 as you originally posted.Ja for that you definitely need a transformer to bring you down to 208-220v as 480v 3-phase puts phase-to-neutral voltage at nearly 280v. Again, for distribution panels feeding only 208-240v miners, fan motors, whatever, then you do not need to run a neutral wire to them, only need the 3 lines and ground. Only panels that you want to split off 110v need a neutral wire.For what it's worth, 380-410VAC is a recognized voltage standard for various parts of the world hence the initial mixup.

### Reply 6:
Yeah that was my bad, we have 408v 3-phase coming in our building and 480v 3-phase coming off our gen-sets.Thanks for the help!

### Reply 7:
I am not sure if you are from U.S where everything seems to be measured differently , but talking from an international standard of electricity , a 3 phase set up usually comes in 4 wires ( 3 phase and 1 neutral wire ) . now anything you measure between the neutral wire and the phase is 220v ( based on 3 phase = 380V). which is the exact set up i have here.so what you have to do is. get 3 main circuit breaker , connect each phase ( wire that is not neutral ) to 1 breaker. and then you going to treat each of the 3 breaker as a different source of 220v, of coz do not forget to pass the neutral to every breaker as well.excuse my poor vocabulary but i hope you get the picture.

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17120,"Date: 2012-05
Topic: Hardware issue with ASUS Striker II NSE POST pulse 5830s
### Original post:
So i have a problem with an Asus Striker II NSE POSTing but only after 8 what seem to like pulses. Some background info:I built this system about two years ago or more and it has been running fine with a 4850. No problems at all. I slap a 5830 in and i am unable to POST quickly. The symptoms are it pulses 8 times then loads the bios splash screen and boots to windows 7. The GPU and CPU fans spin to 100 percent and then down to near off then back up to 100 and then off 8 times, every time i power cycle it (hard or soft restart or power off)If i swap the 5830 with the 4850 it boots quickly. So i concluded that the 5830 was the problem; however, i have 4 5830s, 2 5850s, and 2 6950s, tried them all, and all of them end up with the same pulsing like behavior. Anything above a 4850 causes this pulse. Troubleshooting:I swapped the PSU with a 1000watt that i have been using in another working 4 card miner with the same result. I swapped the HDD with one that passed 2 HDD tests, same result. I swapped the ram with my main rig stable for over 3 months, same result. Here is my hardware list:Asus Striker II NSECore 2 Duo Extreme OCZ DDR3-1066 2x4GBsingle 5400 RPM HDD2x5830sCorsair 850watt PSU <rest of post truncated>

### Reply 1:
My first thought was immediately PSU related. Then you say you already tried another PSU. Have you tried resetting BIOS back to full factory defaults?

### Reply 2:
My experience with Ati/Amd VGA is, that if you change a card ( 48xx to just another ati/amd ) you need to reinstall the driver complete.No idea if this fits your prob.

### Reply 3:
yes i have reset the bios to defaults but i don't remember when i last tried. i do that again. This is before windows loads so i am not sure if a drive would help. Its almost like its checking the system during post and getting an error and trying again. Kinda like network time outs but with hardware.

### Reply 4:
Yes this doesn't have to do with the driver. The driver isn't loaded until very far into the Windows splash screen. During POST the video card relies on a pre-programmed section of its own BIOS that tells it to initialize, spin the fans up to 100% briefly, check core and mem temps, set initial clock speeds, etc etc. From your descriptions it sounds like the video card *is* initializing properly, however the motherboard is rebooting over and over and your only indication is by listening the video card fan spin up and down. If the clock speeds for the *CPU* and memory are off, the motherboard will sometimes reset itself and go back to default speeds for everything. Also, if the CPU is indicating that it is overheating the motherboard will immediately shut everything off. For example, you have a faulty thermistor on the board, or the built in temp sensor in the CPU is bad. It may POST at 180C and go ""OH CRAP, SHUT OFF"" but it takes 8 POSTs before it registers properly at ~25C. It only takes a few milliseconds to burn up a modern CPU that has a problem such as the heatsink not being attached properly, so it has to react very fast to protect everything. I'm just throwing out possible pr<rest of post truncated>

### Reply 5:
Oh I forgot to add. My Asus board has this stupid MemOK feature. If you insert new memory or you try to set the memory speed to high it will POST and reset something like 10 times over and over until it finds the right speed for the memory. Maybe your board is doing that to find the right memory speed? Do you have X.M.P. certified memory? If so, you can set an option in your BIOS to use the X.M.P. profile of your memory, which is what the recommended setting should be (but isn't turned on by default) and maybe that will fix the problem.

### Reply 6:
I have reset the bios and it does the same thing. i found on asus's site this but its for the Extreme version not NSE and will not let me load the bin (not that its a good idea to load an incorrect model bios anyway) i am on the latest version 0901Version <truncated> II Extreme BIOS 1402Fix it might take long time to recognize ATI 5850 VGA card at POSTFile Size762,92 (KBytes)2010.02.10 updateDownload fromGlobal (DLM) Global It might be the temps and no i have not had any other CPU then the x6800 in it. I would guess the same, but if i swap a 4850 it loads into windows without delay. I start mining with the 4850 and it freezes again (this might be a drive issue going to try with bamt for this problem).

### Reply 7:
Oh wow, it looks like ASUS recognizes the problem. If there is one BIOS update for a motherboard even remotely related, you can be sure it is a big issue for your board. I would look around a little harder for the newest version of the BIOS for your exact model. The trick is that they will not list the same problem in the release notes, but its probably in the patch anyway.

### Reply 8:
So with bamt it is unstable. just freezes in general. i asked Asus if they have a newer <rest of thread truncated>
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14530,"Date: 2012-02
Topic: Kepler hashing performance (Numbers)
### Original post:
Definitely a possibility. Still not in the MH/$ range of 5870s or 5970s, but once the Kepler cards come down in price somewhat, they could become popular.I think we may be on the verge of the GPU compute wars. Quite exciting, in a way, and disturbing, in another...

### Reply 1:
If this is true then I am in heaven Sadly, I still think we have to put up with AMD's BS drivers and bugs Yeah, come to think of it I still think they need to implement something like bitalign and BFI_INT to be able to compete with 5870s and 7970s etc. I think in this game the more shaders you have the more MHash/s you get. 1536 < 2048 for 7970s Nvidia fail again.

### Reply 2:
Don't get me wrong. I am literally praying that Nvidia come out with 2048 shader monster of hashing but without BFI_INT and bitalign I really doubt it. The other thing that could happen is Nvidia owns 7970s and prices come way down for AMD cards.

### Reply 3:
I'm sorry to barge in and spoil your party guys, but did you per chance miss the fact that Kepler's shaders will be running at core speed?Fermi-based cards run their shaders at twice the core <truncated> I don't think so.GTX 580's shader clock is 1544 MHz. Let's optimistically assume 1 GHz stock clock speed for Kepler (that translates to 65% of a GTX 580's shader speed).Therefore, a better estimate might beCode: 3 * 140 * 0,65 * a * bwhere a is overclockability modifier and b is architecture modifier.Let's assume that Kepler will overclock to 1200 MHz, what results in a = 1.2.Since integer operations efficiency has long played second fiddle to floating-point operations, there is no reason to expect huge gains. Let's assume b = 1.1, i.e. Kepler being 10% better at integer operations than Fermi.A stock Kepler running its 1536 shaders at 1 GHz would achieve 300 <truncated> the card to 1200 MHz would boost the hash rate to 360 MHash/s - that's uncomfortably close to a stock VLIW4-based hd6950.While half of a 7970's hashing speed is far less embarrassing than nVidia's previous generation of GPUs, it's still pretty underwhelming for an expensive and power hungry card a 1536 SP Kelper run<rest of post truncated>

### Reply 4:
I guess we will see. Until now all this is speculation on our part until the official details are announced. I still think they COULD become competitive if they wanted to with a 4608 shader dual GPU moster that is GTX790 but as I said, we will see ...

### Reply 5:
Don't get me wrong, I want to have a choice when it comes to mining card manufacturers.I hate being tied to AMD and having to deal with each driver update introducing performance loss and craploads of fail.With shader clocks significantly lowered, however, I just don't expect competitive performance from Kepler

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10568,"Date: 2017-10
Topic: Bitmain purchase with wire transfer expired - scam or not?
### Original post:
How long do they usually take? It's been 2 weeks for me and I haven't heard anything from them. They are just ignoring me it looks like. Anyone else have similar issues? If so how long did it take for this issue to get resolved and how did you manage to get them to listen to you?

### Reply 1:
People throw the word 'scam' around on these forums so much more than they ever should. If something doesnt go their way immediately everyone screams scam like its going out of styleThe reality is Bitmain is far and away the largest miner manufacturer in the world but their customer service lags. They arent out to get you, they are just disorganized on the support side.

### Reply 2:
Disorganized? Interesting way of describing things. I called their U.S. phone number and a robotic directory operator tells me they are bitmain. I go through all the options and get a person (after several tries) and the woman on the other end tells me that not only are they not bitmain but that they don't know where bitmain is located or what their Chinese phone number is, which is very strange considering the robot voice seemed to say otherwise.I then called their Chinese phone number and when they finally picked up it was possibly the most hostile customer service I have ever experienced in terms of being made to felt like I was some sort of subhuman harassing my superior by simply calling to find out about my order being expired after I paid. Right off the bat the person on the other end was talking to me in a venomous tone like I had done something to piss her off just by calling, almost like she wanted to start screaming at me and cussing me out. I was extremely polite as well so I couldn't figure out what her issue was or why she seemed so angry. Anyways, I tried to figure out what the issue was and she just read me some message telling me to 'wait 7 days wait patiently' and<rest of post truncated>

### Reply 3:
Are you talking about bitmain ignoring you? ya it usually takes them a while to reply to your support tickets...But they will resolve the issue if the order/orders are paid for. They just fixed my orders that said expired. So dont worry man.

### Reply 4:
It is hard not to be worried right now because I just found out that my bank amended my wire transfer to go to 'Bitmain Technologies AND Limited' instead of 'Bitmain Technologies Limited'. I have no idea why they did that, but it looks like my money may be gone at this point as both sides are refusing to cooperate and help me figure out this situation. Looks like an intentional sabotage from my bank, which has been trying to screw anyone involved with cryptocurrencies and incessantly insisting it is a 'fraud' and a 'ponzi scheme'.

### Reply 5:
damn im sorry to hear that man.. that hella sucks.... If your bank changed the info then they should def be responsible for your money getting lost and they should definitely return it to you. If they don't should get a lawyer if you can prove it was their mistake and not yours.

### Reply 6:
How long they fix it and change to valid?? just curious....

",[]
22172,"Date: 2018-01
Topic: Whatsminer m3 ISSUES NEED HELP
### Original post:
I have m3 miner and for some reason the miner will obtain a IP address via DHCP and I will attempt to login. the miner will open to the main window and as soon as I click on any drop down menu to make changes it will then go back to the login screen. I am guessing it needs a Firmware Reflash. has anyone had this Happen ? Any help would be much appreciated. I have 5 other miners in the space they are all working fine. the room is cool and not hot so I know its not a heat issue. I also noticed that when I ping it I get random packet loss.

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14376,"Date: 2011-06
Topic: MiningMonitor.com - Monitoring - SMS Notifications - Analytics [UPDATED PRCING]
### Original post:
Hey there. I went ahead and signed up. I noticed that the pricing when you create an account vs. when you upgrade is different. You should check that out. It turns out I picked the right package.I would like to setup multiple text-message destinations; to more than one phone. If that's possible please send me a PM. I've got about 30 GPUs and I'd like to cover my bases by letting two people know when something goes wrong so that a restart can happen ASAP.Thanks!

### Reply 1:
Thanks for spotting that! The buttons had been updated, but the text still had references to the older pricing.It's been fixed.PM sent to make sure I understand what you are asking about for the notifications.

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17310,"Date: 2012-11
Topic: sudden drop by 65mh/s
### Original post:
I've got AOCLBF 1.75 running vectors, HD5xxx+, fastloop, phatk, 12 aggression and work size 256. CCC 12.3I was getting a bit over 300mhs at 1000/300. Now, for some reason, at the same specs, I'm getting 237mh/sMy second card at 900/300 is getting 275mh/s. The first card at 900/300 is getting 236mh/sSoo, what gives? Any idea?

### Reply 1:
maybe it's time to update my software anyway, eh?

### Reply 2:
Make sure you didnt upgrade to 12.4I have to close and restart the miner once in a while to get MH/s back.For whatever reason, if i use the PC for <truncated> and music this happens.close the miner, reopen instantly and its back to normal. The pc that is a dedicated miner never has an issue. ts been running for over a month now and only shuts down for a dusting as needed.

### Reply 3:
12.3 had a bug which prevented some software from overclocking.also make sure you are using sdk 2.1, its the fastest for 5xxx (2.4/2.5 is -ok-, dont use 2.6)

### Reply 4:
how do I know what SDK I'm using and, if wrong, how do I uninstall?

### Reply 5:
uh, bump.

### Reply 6:
cgminer -n

### Reply 7:
just got my new PSU in, I wasn't able to use the full power of these GPUs without it anyway. 1). What's the best catalyst version for the radeon 58302). What's the best SDK2a). how the heck do I uninstall the SDK that I have now 2b). how do I find and install the best version of SDK?I should also mention that I'm running AOCLBF so I don't have direct access to commands. I'm running windows7

### Reply 8:
1). 11.12 or 12.1 (I use the former)2). 2.1 DOWNLOAD2a). Not necessary with 2.1. It's a separate platform.2b). cgminer -n or gpu caps viewer > opencl tab. the number in (). If its 800+, its 2.6+. If its 700-799, its 2.4/2.5. If its called ATI Stream, its 2.1.tips at <truncated> btw to make sure your driver is exactly what you installed it as, got to control panel > programs > amd catalyst install manager > express uninstall all amd software, reboot when its done, use driver sweeper (DOWNLOAD) to remove all amd stuff, reboot again, install driver (install everyhing including the bundled sdk, but we wont use that. its needed for some miner software to detect opencl platforms. you dont need the catalyst control center though, its a memory hog), then install 2.1 sdk after driver done, reboot once more, done. If you use cgminer, make sure to include setting the gpu-platform to 1 to use 2.1 sdk.

### Reply 9:
do you recommend one GUI miner over another?

### Reply 10:
I don't use GUIMiner anymore. I switched from GUIMiner to Phoenix 2 when it got updated to version 2 (guiminer doesnt support phoenix 2 because it uses a cfg file instead of command-line arguments), then I later switched to bfgminer (a fork of cgminer) because I needed better pool connection behavior. The hashrates between bfgminer and phoenix 2 should be identical given that I'm using the same kernels and kernel arguments.

### Reply 11:
For some reason, after I installed ccc 12.1 and sdk 2.1, AOCLBF1.75 is no longer working. It'll show the stats for the GPU but the gpu never starts working. Not too sure what the deal is. I probably should just look into running a ubuntu os with the latest and greatest software It's been a while since I updated these things.

### Reply 12:
what is the intensity you are using??

### Reply 13:
Well, I just installed java and guiminer. I ran guiminer as a test then ran AOCLBF again. This time, AOCLBF is running. I'm getting about 270mh/s out of both cards running vectors, hd5xxx+, fASTLOOP, phatk, 12 aggression and 256 size with -a3 flag. I'm running catalyst version 12.8Will work on this:1). 11.12 or 12.1 (I use the former)2). 2.1 DOWNLOAD2a). Not necessary with 2.1. It's a separate platform.2b). cgminer -n or gpu caps viewer > opencl tab. the number in (). If its 800+, its 2.6+. If its 700-799, its 2.4/2.5. If its called ATI Stream, its 2.1.tips at <truncated> GrinNext

### Reply 14:
reinstalled 12.1 and I'm back in the 307mh/s range on the one card overclocked to 1000mhz. The other is at 295mh/s at 965mhz. Not sure if I can bump it up any.

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22823,"Date: 2018-11
Topic: Help with miner error when removing fans
### Original post:
Theres custom firmware floating around here somewhere for liquid cooling that is able to work around the fan requirements.

### Reply 1:
Thank you for help, started new thread.

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4090,"Date: 2012-05
Topic: Stratix IV 180k - Possibilities for Mining - 25BTC bounty plus tips
### Original post:
Since i don't know bunch about FPGAs and I know that BFL uses Stratix III 150K's in their singles, i was wondering if anyone could could provide some numbers as to what a Stratix IV 180k could do in terms of MH/s.I may have a way of getting some on the cheap, and I'm wondering if you guys had any ideas.Edit-Maybe this will work better:I'm pledging 25 BTC(I will increase if necessary) for a board design for the Stratix IV 180k featuring usb and capable of mining(i assume all this really means is supplying adequate power). Maybe this will be the seed of open source Stratrix-based mining.The 25 BTC goes to the person that delivers the complete design. This design can be posted in the forum, I will not claim ownership. If they have help, the onus will be on then to distribute the BTC fairly. I don't think I will be able to manage dividing it between people fairly unless they all agree on the split. I will also deposit tips(.5 - 3btc) from a separate pot for insightful posts.I'm 100% serious about all of this. These stratix chips really seem like beasts considering how much BFL got out of them.If anyone has a better idea of how to crowd-source this, please let me know. I'm open towards <rest of post truncated>

### Reply 1:
Seeing how many FPGA companies are popping up, I think someone would do this already if they thought it was profitable and possible.

### Reply 2:
How many FPGAs are 'some'?While you could produce a pcb artwork using open source tools you probably will produce one or two boards ($100 each) for testing before producing a (small) series which is quite costly. Then you need a ful version of quartus(42500) to produce the bitstream. Then you need someone whos assemles the boards for you which isn't (as far i know) so trivial due to high ball count and the 'heavy' metal heat spreader.

### Reply 3:
5 of them. This may have been a mistake, but that's alright. What I really need is a PCB design. I've read all the specs for these and I really don't have the technical capabilities to design the PCB. I just just don't know what a platform for mining really requires with regards to components. Can someone help me out with that?

### Reply 4:
Eheh, damn. I was hoping you came across a truckload for $200 each, because you could sell out quick. Oh well.

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8755,"Date: 2015-01
Topic: Power Supplies and Current Miners: Starting a Reference List
### Original post:
Silverstone 1500 runs an SP20 fine @ 1.6TH same with the LEPA 1600

### Reply 1:
With both are you going 2 - 8 pin split cables to the 4 ports on the SP20 or are you using 4 ports on the PSUs? What are the ports on the PSUs labeled?

### Reply 2:
Any of the higher end PSUs like those mentioned will have at least 4 cables so you can run dedicated cables from the PSU to the SP20, the 1200W+ Lepa, Silverstone, Corsair, Cooler Master, EVGA, etc. all have 4 or 6 PCIe connectors... Biggest thing to pay attention with any ATX PSU and miners is the rail configuration, that perhaps is a good conversation as it applies to any miner where one might be looking for a PSU...

### Reply 3:
I'm running 3 S3+'s with one EVGA 1300 G2 (had some extra PCIe cables from other EVGA power supplies so have all 3 S3's connected to 4 PCI cables (2 x 2 x 6).

### Reply 4:
I do not think the cx750m will safely power an s-5 running above freq 325. but I am not sure. it only has 2 cables each with 2 plugs. so you are asking the cable to do 300 watts if you do freq 350. So I guess the best way to know has anyone run a cx750m with 2 s-3's set at freq 225 that would be 1 cable for each s-3 using the 2 plugs one in each board. two s-3's at freq 225 pull about 720 watts so if you can do that the cx750m could certainly run 1 s-5.

### Reply 5:
Right...you have to watch rails for sure. I was sure to use 1 rail per pci-e on the SP20 so each rail only had a decent load. I know a lot of people dislike the multi rail PSUs, but I have never had issues with them on GPU or ASIC rigs.

### Reply 6:
Thank you for all the info. I've updated it per what people have added. Anything else?

### Reply 7:
I power 16 overclocked Ant S3's with 8 EVGA SuperNova G1's. They are gold rated, modular, come with enough cables to power all 8 ports on two S3's, and come with their own plug that snaps on to the motherboard cable so you don't have to shove paperclips in the holes to run it without a motherboard. One of the best you can buy IMO. Had them running for 5 or 6 months straight now with not one issue.

### Reply 8:
The 750 will, I've got one on it now. They're exceptionally solid little things, even if it is 18AWG. Please don't quote his OP content though, even if he updates it now, you're fragment will remain in the quote.

### Reply 9:
Hello,Based on a short off topic exchange, it looks like there is some confusion about the best ways to hook up some of the current generation miners to popular power supplies. I'll be happy to edit this post as people provide information to provide a place to find this information quickly. Please don't limit it to what I've got here, feel free to add other miners and other PSUs, as well as helping me fill in the info correctly here. Also, most of my experience came on BFL and S1s, so please correct me if I've mistated something.Antminer S5CX750M - Will power 1 miner, connect the 2 - 8 pin split cables to the ports labeled ""6+2 PCI-E & 4 + 4 CPU"" and to the 4 - 6 pin ports on the minerEVGA 1300W SuperNova G2Silverstone 1500LEPA 1600Spondoolies SP20 CX750M - Need two PSUs to power 1 miner, connect the 2 - 8 pin split cables to the ports labeled ""6+2 PCI-E & 4 + 4 CPU"" and to the 4 - 6 pin ports on the miner ( ? )EVGA 1300W SuperNova G2Silverstone 1500 - Will power 1 minter, connect 4 - 8 pin cables to the 4 - 6 pin ports on the minerLEPA 1600 - Will power 1 minter, connect 4 - 8 pin cables to the 4 - 6 pin ports on the minerAntminer S3CX750M - Will power 2 miners, connect the 2 - 8 <rest of post truncated>

### Reply 10:
Updated for the 750. Which wattage for the EVGA G1?

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    ""hardware_name"": ""LEPA 1600"",
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    ""hardware_name"": ""EVGA 1300 G2"",
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    ""hardware_is_owned"": false
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]"
17064,"Date: 2012-03
Topic: How to go about setting up a headless mining rig?
### Original post:
I have a old am2 board knocking about and a spare psu, thinking of hooking up a few 5850's to the thing,The internet connection to my main pc is supplied via usb, so il proberly hook up a switch to the eathernet port on the main pc and use a crossover cableWhats the best os/ drivers and software to do this with?

### Reply 1:
You could use Lubuntu and login to the Openbox desktop that is basically just a terminal and probably just as light but gives you the option to open a web browser or GUI programs if you want/need to?

### Reply 2:
This;<link> is designed to do exaclty what you are trying to do.Throw a few coins to the developer once it's up and cranking.

### Reply 3:
Thanks!

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16661,"Date: 2011-06
Topic: CCC not recognizing bottom card
### Original post:
So, I've been mining perfectly fine for a while until today. I had to reboot to test something, and when I did, whichever card I put in the bottom slot stopped working. I know the hardware is fine, and the bottom card works when the top card is out. This happened before I updated to 11.6, and everything was stable until now. CCC only sees the top card, although Afterburner and Windows see both. I tried enabling extended desktop, which did nothing. I don't think my dummy plug is the issue, but I will test that in a minute. When I run the top card alone, it works fine. When I run the bottom card alone, it only gets 300 kh/s. When I run them both together, they both get <1 mh/s. Help!

### Reply 1:
Fixed! Beware of the new XP security update. A quick system restore gets around this.

### Reply 2:
You should turn off automatic updates on all rigs if you have Windows. Will save you a lot of headaches esp. in the form of not getting random reboots out of nowhere.

### Reply 3:
The reason why this is happening is because your processor replaces your graphics card on the list as device 1 (list starts at index 0) when the second card isn't being detected.

### Reply 4:
Yeah I learned about this one the hard way!

### Reply 5:
All windows updates disabled... If it ain't broke, then I don't want the patch to fix it.

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11488,"Date: 2011-07
Topic: 3% faster mining with phoenix+phatk for everyone
### Original post:
I saw an 9 MHash/sec (6.2%) increase on one of my miners after this fix, will do it on my other one later as well. Thank you! Will be sending a small donation your way soon.

### Reply 1:
from 355.9 to 372.70 on my 6950 on linux.

### Reply 2:
Looks like the higher end cards are getting about 5%.

### Reply 3:
Confirmed on windows 7, I got a increase from 387.4 MH/s to 401.7 MH/s per GPU

### Reply 4:
Great!Got an increase of about ~370 to ~380 on both of my 5870Thank you

### Reply 5:
Yeah, from 355.9 to 372.7 on unlocked 6950@840mhz, and only from 364 to 367.8 on 5850@920.279 to 285 on a 6870@950.

### Reply 6:
Yes, from ~330 to ~340 Mh/sec on an o/c 5850. Great work.

### Reply 7:
Nice find, thanks. Will add this to hashkill as well if you don't mind

### Reply 8:
Note that the origin of this mod is here: <link> here's the author: <link>

### Reply 9:
280 to 289 on a stock speed 5850... will be using this on all my miners, thanks!

### Reply 10:
379 -> 382 MH/sec on 5850 (966/180)199 -> 202 MH/sec on 5770 (933/300)441 -> 449 MH/sec on 5870 (1006/180)All in all, pretty good!

### Reply 11:
359 -> 367 MH/s on 5850! Thank you very much (small donation will be sent this evening)!

### Reply 12:
great thanks works perfectly fine!5830 (970/300) 301 -> 307 Mhash/s

### Reply 13:
5870: 350 to 370 MHash /sec

### Reply 14:
5830 980/600 running a 70 deg fans 55%produce 290 Mh ...No change under guiminer after update of the kernel file ...going back to original file ...good luck

### Reply 15:
did you edit bitminer.cl in the guiminer folder?

### Reply 16:
thx, sent a small donation

### Reply 17:
About +5mhash on 5770. *tip sent* Thanks!

### Reply 18:
Thanks!350 -> 365 on my 6950@900MHz

### Reply 19:
its weird, while the hash rate shows more it did'nt actually produce any more shares over the same period of time...

### Reply 20:
321 - 329 Mhash/s on 6870 @ 1056/366, Win 7

### Reply 21:
Awesome find, Gave me 6-7 more MH froom 340 with my 5850 Extreme. I'll send a few bitcents your way if this is stable.

### Reply 22:
From 338.9 to 352Mhash/s on my 6950 (only @860) ~3.86% gain Will donate a bit as well if this is stable

### Reply 23:
I'm glad this was helpful but be sure to send donations to the address listed, not me.

### Reply 24:
HD 5830 - 275 Mhash -> 279 MhashHD 6950 - 340 Mhash -> 359 MhashVery nice

### Reply 25:
Win7/x865830 @ 1000/300Went from 308 to 317 Mhash (327 Mhash @ 1033/300).

### Reply 26:
<truncated> (995/300) POCLBM with phatk

### Reply 27:
Works with <truncated> whitelist that guy out of the newbies forum!

### Reply 28:
Works also for POCLBM, just need to edit bitcoinminer.cl and change very same line.PS.Add it to first post plx.

### Reply 29:
NO! has a strange format and not editable with ""normal"" MS editor .. just edited phatk kernel.cl...

### Reply 30:
thx!send a donation

### Reply 31:
Strange format is actually the same as phatk.cl but without 'enter's'. Just press CTRL+F, type fist part of string to change and after u find it replace with what u have in first post. Works well for me ( values arent much higher, but more constant (387 instead of 377-385). If you want I can post here the file.

### Reply 32:
Sharing: from 386-396 Mhash/sec on 5850XFX+IcyVision @ <truncated> work! Thanks for the info.

### Reply 33:
Done. Its also in the latest Diablo.

### Reply 34:
OP correctly included the original author's donation address, so clearly he isn't trying to steal credit for it

### Reply 35:
exact same here

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9649,"Date: 2016-01
Topic: Help me troubleshoot my new Antminer S7
### Original post:
I have 2 hp 1000w psu's with X-Adapter REV 2 & 14AWG THHN Cables(the kits you see on amazon, etc). I can't get the red light by the ethernet port to go off. I think that light means it's in some kind of fault mode. There are no stats in the miner status page, not even the fans. It's like they don't exist. I need to figure out what the problem is. Can I just plug in one board at a time to see if they work independently to see if one of the boards is bad? I unplugged everything and checked the power supplies and was getting 12.79V on all 10 connectors. All 10 power connectors are plugged in. The control board is connected to all 3 hash boards with the ribbon cables.Any help would be much appreciated.

### Reply 1:
Try connecting the control board first.

### Reply 2:
Do you mean in powering up? I have turned them on at the same time and then the 2 hash boards on one ps and then the other hash and controller. So you want me to reverse that order?and thanks for your help

### Reply 3:
No, you did it right. Regardless you should see the board. It look like cgminer is not starting, this is something that could happen if you bricked the controller by trying to update the firmware.You'd have to post the log and see why its not starting. But that's a bit over my head so someone else would have to help with figuring out your log, assuming you did not mess with the firmware.

### Reply 4:
I have not touched the firmware.

### Reply 5:
How is the wiring split on the 1000 watt PSU's? And are you running them on 120 volt? Looks like on 120 they go down to 800 watts. So curious on your wiring.

### Reply 6:
1 ps has 6 connectors and runs 2 hash boards. 1 ps has 4 connectors and runs the other hash board and the controller. Yes, it's 120V.

### Reply 7:
I hate mixing PSU's I would see how others with this kit are doing it with 120. But each board is going to use more then the 400. So I don't think 1 of the PSU's will run two. If it was on the 220/240 with 1000 watts it would run two. But your giving them to few of watt's I think on 2. Unless they are underclocked then you could depending on settings. Also I'm assuming it's a batch 8 or 9 in this.So ask seller if they do a mix of how they do on 120. I would sit it aside till you get that anwser from seller or someone on here who has used it.

### Reply 8:
Hmmm....so you think this is a power issue? I based my system from what I found on the internet. This sucks.

### Reply 9:
Dunno, if thats the case you should be able to set a lower clock, reboot the thing and then it would work.Did you ever make a screenshot of your pool config page? I'd like to see it.

### Reply 10:
Assuming it's a B8 running at default 800 watt's is not enough to run 2 blades. That is a 1000 watt psu only on 220/240 so would work fine there.But he will have to underclock to get 2 blades running with 800 watt's. It might not be only issue but it is for sure at least one issue.

### Reply 11:
<link> don't know if either one of those links work. Do you think setting it to 600m would work? Or do I need to go lower?The psu's says it puts out 900w with 120v. If the whole system is 1250ish watts, that is a little over 400w. I will get another psu tomorrow to find out for sure. I am going to go try to underclock it and see if that works.

### Reply 12:
I just underclocked it all the way down to 400M and still nothing. I am not sure if yall can see them or not, but the links in my post above is a pic of the miner status tab. Nothing is reading. I don't see any X or O to show the status of the chips or the speed of the fans, just the categories are there. Does this mean that the controller is bad? I don't think it's a power problem with it being underclocked so low. Thanks for all yalls help so far, hopefully only a few more steps till mining.

### Reply 13:
did you configure a mining pool yet? Input your pools, could be a long shot but it sounds like the PSUs are not strong enough since its not 240v and is 120

### Reply 14:
I have set up my pools. I am going to try to buy a bigger power supply tomorrow. Then we should know for sure. I don't know if it makes a difference, but it is very loud. After about 30 secs after boot up, I think the fans go to 100%. I have seen some videos on youtube and such and they are not even close to how loud mine is. Don't know if that means anything or not.

### Reply 15:
Just to make sure on network if you log into miner. Then click network, then diagnostics and it should have bitmain's site is it successful when it tries to ping?

### Reply 16:
Hey check your pm

### Reply 17:
Naw a screenshot of your pool configuration page. Not the miner status page.

### Reply 18:
I have a feeling it's a controller issue? Even if he had wrong pool configure info that info should show up on status page but just show dead I believe. So if under powered you should still see this I would think. Are the fans running?

<rest of thread truncated>
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10401,"Date: 2017-08
Topic: ANTMINER S9 ISSUE
### Original post:
HII have an S9 with the issue in the picture attached can you guys help me some advices what do i need to do thanks<link>

### Reply 1:
Please some help/advice anybody thanks

### Reply 2:
This is my antminer s9 screen shot<link>

### Reply 3:
Try connecting that zero hashrate hash board in chain 7 (connector J7 in the controller) to another controller data connector.Try to see if there is red LED light on in the hash board.If the light is off and changing controller data connector makes no difference, and power connections etc. are ok, then you have a dead hash board and it is time for a repair job.Warranty repair if you still have warranty left or paid repair if there is no warranty time left.Bitmain has this guide for broken hardware: <link>

### Reply 4:
I did but no light on the chain 7 board.

### Reply 5:
Then see the Bitmain guide I linked in my previous message.

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9575,"Date: 2015-12
Topic: Antminer s5 Optimization
### Original post:
Ok comrades, my Antminer is slowing down and I need to figure out what her deal is. First, the details.Miner Type:Antminer <truncated> GNU/LinuxHardware: 3.4.3.0Power Source: Corsair CX 750I remember when I first started this unit that it averaged about 1100Gh/s but now according to the system it's dwindled to about 555Gh/s. One of the first things I noted that was different was that the cooling fan shifts between speeds at random. One of the blades is showing a red light next to one of the power connectors. Steps I've taken:1. Reset the device2. Increase the frequency from 350m to 400m.Both yielded negative results. I'm requesting suggestions on what I should do next.

### Reply 1:
Increasing the frequency won't help if it's having issues with one of the blades... Try decreasing it to 300 and see if the other blade responds. Otherwise you may just have a bad blade, maybe inspect it to see if something failed on it (like a capacitor).

### Reply 2:
Thats half the speed, so i'm guessing its the common issue of a blade stopping to hash after a while. While it could be worsen by a bad PSU, it normally resolve itself. Did you try updating the firmware?400m is too high, but on stock voltage, 393 should work for 1.29TH/s.

### Reply 3:
Hi, it seems that one hashboard drops out. It is chain1 or chain2, check the red LED on each chain (top view on the S5). You may also see it in your webinterface by checking the temps -> the dropped chain is obviously the colder one. - check the cable and its plug from the hashingboard to the controller- try another PSU- some reported this issue with the latest firmware- try to lower the speed a bit

### Reply 4:
<link> I'm having similar issues. If I restart it about 4 or 5 times, I can get it back up to full speed. I can keep it at full strength for about a week before one of the boards craps out again.

### Reply 5:
Huh. Currently Chain #1 has a temp of 18 while Chain#2 has a temp of 45. Going to check this out. Will advise.

### Reply 6:
Yep you might have to drop down the frequency or reboot a few times. Unfortunately on occasion the S5s can get a finicky blade. We'll see what you find !

### Reply 7:
On the occasion it does get a finicky blade, is there anyway it can be service or a means of replacing it?

### Reply 8:
You can simply find someone with a good blade to sell it to you, and you just swap it out. But this 1 blade dropping thing happen a lot, to all of my S5 and mostly stopped happening since i updated all the firmware. It does still happen but it is picked back up after a minute, so overall only a couple GH/s average is lost.

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23203,"Date: 2020-02
Topic: Using Dell N750P with Antminer S5
### Original post:
Hello There! I got today an DELL N750P to use with my antminer, i was using the jumper C2 To B2 but the PSU gets really hot , so i just removed it, its loud but i dont care about the noise. my question is. Is it bad to leave the fan running at full speed? or should i consider lowering the fan speed somehow? but the C2 To B2 jumper gets the PSU really hot.

### Reply 1:
it's better to leave it around 50%, at full its life span, would be several reduced, if it is a new fan you will not notice it now, but in some weeks months, they will start to make a strange noise and the chances to break it will be highermaybe you can add an auxiliary fan to sustain the temp

### Reply 2:
Ok! but what jumpers do i have to set to use it at 50% ?

### Reply 3:
wait because if the psu is really hot and the fan is set to auto, it mean that the ambient temp is already high and the fan need to run at max to cool the psu, so if you set it to 50% you need to ad another big fan to keep it cool enoughi don't know what jumper you need to use but i found for you this <link> reead the last post Pin B2 to ground worked for me to slow the fan speed

### Reply 4:
Just acquired this powersupply. My psu has a jumper between A1, B1 and B6 (PS_KILL, GND to PS_ON) and a switch between B2 and B6 (PWM and PS_ON). With the switch off the miner boots but doesn't mine. When on the powersupply is extremely loud and the miner starts to work.The jumper should have been enough for the PSU to power on?I've got the feeling it's not wired optimally for low noise...Yes... I realize i'm bumping an old topic

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13996,"Date: 2011-05
Topic: How big of a power supply do I need?
### Original post:
How big of a power supply do I need for two 5870's? I see a lot of recommendations and people using 900 watt + for 5970's and such. Will these smaller requirements need that much power?

### Reply 1:
I'm running 3 5870s off a 700 W PSU with an Intel E6400. At the wall I'm drawing 670 Watts, so I'm close to the limit, if not over it. I was drawing 280 Watts with one 5870, so each card is approx 185 Watts. I'm using a Coolermaster 700W Silent Pro, which is 80+ Gold certified and only cost 79 inc P&P in the UK.

### Reply 2:
Depending on the rest of your hardware you can expect that 2 5870 GPUs will draw ~200W each under load.

### Reply 3:
keybaud may I ask what motherboard you are using?

### Reply 4:
Intel D975XBX. I got it off Ebay a week or so ago with the E6400, 2GB DDR 2 and a 320 GB HDD for the grand total of 55.

### Reply 5:
Thanks. I am looking for something that has the capacity for 3 cards

### Reply 6:
You've got a fair bit of headroom left. 670W wall at 87% efficiency is 582W of output, so you've got 118W of extra headroom, assuming your temps are in spec.

### Reply 7:
Actually 650W is more than enough - you can calculate your consumption at <link>

### Reply 8:
I am also using the Intel D975XBX also; with an Intel E6300, 2GB DDR2 667, a reference 5850, and a non-reference Sapphire 5870, and this PS is serving me well (I don't have any exact usage figures, though): <link>

### Reply 9:
I think I just blew a 1200W power supply powering 2x Nvidia 295's just 18 hours after I started GPU mining. (At least I hope that is all I blew).It tripped the circuit breaker.

### Reply 10:
What does reference and non-reference mean in this context? And how does that effect wattage?

### Reply 11:
What model PSU is it?A reference GPU uses the 'stock' ATI / Nvidia board and heatsink, non-reference cards typically use boards that may restrict overclocking (By locking the voltage, for example) or they may have a custom cooler fitted.

### Reply 12:
This link outlines power requirements for many different cards:<link> looks like the Quad SLI I was using draws about 735W at the wall outlet for the basic setup. I suspect that coin mining might draw more power than even ""loaded OpenGL"" due to the ""tight loop"" nature of hashing. No breaks waiting on memory,etc.

### Reply 13:
Thermaltake W0133RU ToughPower 1200W Modular Power Supply

### Reply 14:
Assuming the power supplies are only 80% efficient, a 1200W supply is can really only provide 960W.Operating a power supply for extended periods of time near the upper end of its rated range is sure to find the weakest component.So I would recommend sizing your power supply 30-50% more than it is actually using to prevent it from overheating or failing early.In my case, I decided to replace it with the ToughPower 1350W supply, it was cheaper and has 10% more margin for error.

### Reply 15:
No, what that means it can supply 1200W. Thus drawing 1500W from wall at 80% efficiency.Leaving some headroom is of course recommended. PSUs tend to get noisy at high loads, and tend to be most efficient around 50% load. So it's probably a good idea to leave some 20-30% headroom at least.

### Reply 16:
On a related note, would a 650w PSU be necessary for running 3x5850's, or could I drop it down to a decent 550w or 500w? Recommendations? The other components would just be a 65TDP C2D, single stick of memory, and HDD/fans. Well, and the motherboard, obviously.

### Reply 17:
if you going to OC your cards choose 650w PSU

### Reply 18:
Yeah, good point. I do plan to overclock them.

### Reply 19:
btw, if you going to use 5870 bios your card will consume more than 150w. I think it about 160 - 170 w.

### Reply 20:
I think bitcoin mining is going to quickly separate the men from the boys when it comes to PSU brands.We are going to see a lot of blown up power supplies! Thermaltake wasn't banking (pun intended) on bitcoin taking off.

### Reply 21:
If you only plan on using (2) 5870's, a psu in the neighborhood of 650-750W would be plenty. You can get a 650w corsair tx for $80 after MIR, or the 750W for $95 after MIR from newegg.

### Reply 22:
I am running 2x 5870s overclocked to 975MHz and a slightly overclocked sapphire 5850 (I've downclocked the memory to 300Mhz on all of them) in my big box. It puts out about 1.1GHash/sec and pulls 555Watts from the wall. Assuming an 87% efficiency rate that's 482Watts. So 2 5870s should be able to run on a 500W PSU.

### Reply 23:
My dual 5870 rig eats up 440 Watts at the wall and I have a 600W power supply, so I'd say 600W is a good number to have. This way you have a fair bit of headroom and you aren't maxing out or coming close to maxing out the power supply.

### Reply 24:
This is why you really can't go by the overall wattage ratings. Wattage ratings include all sorts of voltages that don't matter to video cards. You need to look at how the +12V power is distributed.Look at <rest of thread truncated>
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  {
    ""hardware_name"": ""700 W PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Intel E6400"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Coolermaster 700W Silent Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Intel D975XBX"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2GB DDR 2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""320 GB HDD"",
    ""hardware_is_owned"": true
  },
  {
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Intel E6300"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2GB DDR2 667"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""reference 5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""non-reference Sapphire 5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1200W power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Nvidia 295"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Thermaltake W0133RU ToughPower 1200W Modular Power Supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ToughPower 1350W supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""650w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""550w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""500w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5870 bios"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""corsair tx 650w"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""corsair tx 750W"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sapphire 5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""600W power supply"",
    ""hardware_is_owned"": true
  }
]"
9753,"Date: 2016-03
Topic: Antminer .bin modding - just for fun.
### Original post:
You have to convert the bin to ISO then burn it to dvd/cd, if you don't want to do that you can create a virtual disc drive for the purpose of seeing the files and running the exe inside.Been a long time since i did this, cannot remember all the fine details.Hope it helps somehow.

### Reply 1:
Its easy extracting the BIN but how do you put it back together after you make the changes?

### Reply 2:
convert the bin to ISO which will make it an image, load the image using your iso virtual drive or whatever software you can.Last I used was ultra ISO which is very good.When you load the image it shows in your virtual drive as a normal disc, and can be run from there.

### Reply 3:
SWEET! this is exactly what I was looking for Thanks so much for the info. Now time to journey 'down the rabbit hole' lol see you all in 2 weeks lmao

### Reply 4:
Youre welcome, glad to help.Two weeks eh, down that hole, hope it's not too deep lol

### Reply 5:
Ok, so Ive hit a bit of a roadbump with this project. (I know, on step 1 lol) The binary files provided by bitmain, at least for s1 and s3, are NOT cd files that have been converted into a .bin (such as for emulators). Due to this, magicISO, daemon tools, and UltraISO all give an error when attempting to convert to ISO filetype. All with different wording, but similar to 'Cannnot locate file or file is not cd image file'.Now after some quick research I've come to realize that firmware for s4 and up actually come in .tar.gz format, making extraction and modification FAR easier. With this new info, I've come to the conclusion that without some serious hex and debugging knowledge, that this project may be dead before it starts.Does anyone have any ideas on how to turn a non cd-rom .bin into ISO (since its not mountable)? or is hex-editing the only option at this point?

","[
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  {
    ""hardware_name"": ""virtual disc drive"",
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  },
  {
    ""hardware_name"": ""iso virtual drive"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UltraISO"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""magicISO"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""daemon tools"",
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23739,"Date: 2021-10
Topic: Firing up dormant T9+ miners - getting 1/3 hashrate, help needed
### Original post:
Hello - its been some time since ive had my T9+ miners running, and so today i decided to fire them back up. After some fussing with networking I finally got them online but noticed i'm not getting the hashrate I once used to. Looking at other posts, seems like natural progression is to include the kernel log which i've done below. Side note, I ran into a character limit, so i removed a decent amount of the logging info. Mainly i removed what looked like chip\core information below several sections what i'd call a heading ""Below ASIC's core didn't receive all the nonce, they should receive 8 nonce each!""Trying to read the logs myself some things did jump out to me as what the issue may be, but i'm not sure how to interpret and or the potential avenues to try and fix it (Flashing, replacing a board - which might just mean getting rid of the rigs)Any insights is helpful! Thank you in advance!Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5<rest of post truncated>

### Reply 1:
Looks like some boards and chains are bad.Check the power supply by moving the cables between boards. And see if the same boards / chains are bad or if they follow the power supply cables.Other than that, if you have a bunch you can pull and swap boards till you have fully working miners.The T9+ units are known not to be the best. -Dave

### Reply 2:
They were actually the worst built up to the S15 era, after that the S9k came long and broke the record and held the top position of the ""worst gear"" unit the 17 series hit the market.OP, after doing what DaveF suggested, try to run 1 board at the time, the board that doesn't give you 1/3 of the total hashrate is most likely dead, if all boards work fine individually then you have a bad PSU or too low voltage, also it would be best to try all of that after flashing a new firmware using an SDcard.

","[
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    ""hardware_name"": ""networking"",
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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""SDcard"",
    ""hardware_is_owned"": false
  }
]"
24055,"Date: 2022-12
Topic: avalon 1166pro 81th high temperature
### Original post:
<truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':19,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1201944.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[15729] <truncated> LW[15661980] MH[365 311 428] HW[1104] DH[24.485%] Temp[33] TMax[80] TAvg[58] Fan1[5510] Fan2[5537] Fan3[5418] Fan4[5418] FanR[74%] Vo[331] PS[0 1216 1326 166 2197 1324 2437] PLL0[15000 250 82 28] PLL1[628 860 1796 12076] PLL2[1493 2032 2735 9100] GHSspd[47258.60] DHspd[22.940%] GHSmm[64315.12] GHSavg[56281.75] WU[786246.90] Freq[348.93] Led[0] MGHS[12702.72 22149.65 21429.37] MTmax[80 70 72] MTavg[53 61 61] TA[360] Core[A3200] PING[269] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[316 336 356 376] SF1[316 336 356 376] SF2[316 336 356 376] PVT_T0[ 61 80 76 64 61 54 53 58 64 60 56 59 54 59 60 60 55 54 54 56 60 60 58 54 53 57 59 61 54 51 51 54 61 57 53 51 51 54 60 60 52 49 52 55 56 53 53 52 48 50 58 54 57 54 52<rest of post truncated>

### Reply 1:
I think it's just an abnormal voltage status look at the temp it's pretty normal I don't think you need to do anything. Why not try to disconnect all cables from PSU and clean up all terminals and connectors with isopropyl alcohol then plug them back in?Let's see for the logs changes and the command you use I think it should work but it's not permanent every time the miner restarts it goes back to normal.Would you mind to try this command below <truncated> re-aging with parameter.

### Reply 2:
I've already aged it in every possible way and it's still the same. Do you think it's the power supply that has the problem?but this command is aging does not work for me

### Reply 3:
I don't think it's a power supply but there are other PSU models for this unit so it might be a compatibility issue.Did you check the model of the stock PSU (The old PSU)? You should replace it with the same model, not the other model they have PSU3300-03 plus, PSU3300-02 plus1, PSU3300-01 plus1, etc...

### Reply 4:
the power supply model that it had before was the PSU3300-01 plus it now has it is PSU3300-03 plusDo you think that's why the problem?

### Reply 5:
Maybe, it is just my guess but most of what I heard if they bought a different PSU model they experience different issues not the same as yours but I think related.Since you said the hashrate goes down what hashrate does it drop?If it drops 2 to 5th/s I think it's normal to see it will automatically drop the hashrate due to abnormal status.Can you try to force your miner to performance mode? Based on your logs it's running in normal mode let's see if there is any changes.

### Reply 6:
the machine is 81 th if I apply the fan command with 85% it lasts up to 3 hours working well but since they rise to those volts the hashes drop to 75 and even less while it is stable the volt is 355 358 and 362 later it changes to 980 1012 1000 when it gets to those volts it overheats those chips

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    ""hardware_name"": ""PSU3300-02 plus1"",
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]"
24002,"Date: 2022-08
Topic: Antminer S17+ Hashboard Chip Parts List
### Original post:
ASIC chip: BM1397AG, a total of 65;Level conversion chip: SN74LVC1T45DBVR, marked CT1*, a total of 2;Microcontroller: PIC16F1704, 1 piece, located in U3;EEPROM: AT24C02D, 1 piece, located in U5;N-ch MOS chip: TPHR9003NL, a total of 4;Boost conversion chip: MP1517DR, 1, located in U6;3-terminal regulator: AP431SAN1TR-G1, 1 piece, marked GCC, located in U4;1.8V regulator: MP2019, 1 piece, located in U28;1.8V regulator: SY8120I, marked qG***, a total of 12;0.8V regulator: SGM2036-ADJ, marked SQ7**, a total of 26;Temperature sensor chip: NCT218, marked T2*, a total of 4.The above is the information of the chip of the S17+ hash board. If there are any deficiencies, please add them.

### Reply 1:
Ask for U7 position number.

### Reply 2:
I'll throw in the link to the picture here below:<link>

### Reply 3:
Or take a pic of U7 chip so I can be sure of correctness.

### Reply 4:
SY7208 can also be used for replacement.

### Reply 5:
I'm sorry for the previous reply. As I don't have a hash board on hand, my previous reply may be wrong. <link> saw in this thread that U7 is marked HMBWA, then I think the name of the U7 chip is SY7302ABC, marked HM***.

","[
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    ""hardware_name"": ""AP431SAN1TR-G1"",
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    ""hardware_name"": ""MP2019"",
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    ""hardware_name"": ""SY8120I"",
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    ""hardware_name"": ""SGM2036-ADJ"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""NCT218"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SY7208"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SY7302ABC"",
    ""hardware_is_owned"": false
  }
]"
23932,"Date: 2022-04
Topic: Cheetah S5 Miner; Aisen A1 Pro 25T;
### Original post:
Can you edit your post and put all your logs under insert code tag a sharp # button when editing a post here?All I see is this Code:Apr 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) <truncated> 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) bch.viabtc.io:25Apr 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) <truncated> you put these pools without stratum+tcp sample like this <truncated> it again with stratum+tcp and I think you can also able to mine with btc.viabtc.com:443 if the viabtc.io does not work.

### Reply 1:
Hello, I recently bought a mining Cheetar S5, apparently it is similar to the Aisen A1 Pro, but I have the following problem:Code:-- Logs begin at Sun 2018-01-28 23:58:17 CST, end at Wed 2022-04-20 05:08:02 CST. --Apr 20 04:55:44 rockchip systemd[1]: Starting Cgminer...Apr 20 04:55:44 rockchip systemd[1]: Started Cgminer.Apr 20 04:55:44 rockchip cgminer[251]: Started cgminer 4.10.0Apr 20 04:55:44 rockchip cgminer[251]: Loaded configuration file <truncated> 20 04:55:44 rockchip cgminer[251]: Probing for an alive poolApr 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) <truncated> 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) bch.viabtc.io:25Apr 20 04:55:44 rockchip cgminer[251]: Failed to resolve (?wrong URL) <truncated> 20 04:55:44 rockchip systemd[1]: Stopping Cgminer...Apr 20 04:55:44 rockchip cgminer[251]: Shutdown signal received.Apr 20 04:55:44 rockchip cgminer[251]: Complie date : Jun 28 2019Apr 20 04:55:44 rockchip systemd[1]: Stopped Cgminer.Apr 20 04:55:44 rockchip systemd[1]: Starting Cgminer...Apr 20 04:55:44 rockchip systemd[1]: Started Cgminer.Apr 20 04:55:44 rockchip cgminer[279]: Started cgminer 4.10.0Apr 20 04:55:44 rockchip cgmi<rest of post truncated>

### Reply 2:
Hello goodnight.I used stratum+tcp, but I don't know why it doesn't appear in the code. I also corrected it and put it in code form, can you see it now?

### Reply 3:
It seems not available for bch mining

### Reply 4:
How about extra spaces have you tried typing them manually than pasting the URL? There might be extra space at the end or on the first character. Also would you mind to check the dashboard if this unit is g19 or g29 control board because I heard that you can able to flash g19 units with BraiinsOS so you can try to boot Braiins with SD card on this unit. Check the official thread here <link> ask on how to boot BraiinsOS through SD card. Don't flash it just boot it with SD card to avoid program corruption(Hard Bricked).

### Reply 5:
#Proof Of AuthenticationForum username: Jin@Forum Profile Link: <link> Username: <truncated> Campaigns: Twitter Facebook telegram InstagramBSC address: <truncated>

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  },
  {
    ""hardware_name"": ""Aisen A1 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""g19 control board"",
    ""hardware_is_owned"": false
  },
  {
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22508,"Date: 2018-03
Topic: How damaging is reversing the polarity the S9 controller board?
### Original post:
Ouch! That hurts to even look at!

### Reply 1:
I smoked an S7 controller with a mis-wired PCIe connector (+ and - reversed). Burned up a couple of the voltage regulators, but is probably repairable and nothing happend to the PSU and wires. Yours looks to be much worse...

### Reply 2:
for starters, Reversed voltage --> good bye caps.

### Reply 3:
If you think a controller melt looks bad, you should see the hash boards when they melt... Do you think I could still splice the one burnt pcie and keep using the power supply?

","[
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    ""hardware_name"": ""S9 controller board"",
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  {
    ""hardware_name"": ""S7 controller"",
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  },
  {
    ""hardware_name"": ""PCIe connector"",
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    ""hardware_name"": ""PSU"",
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]"
15950,"Date: 2017-07
Topic: Dumb transaction question (Bitcoin mining is very expensive)
### Original post:
Hi Everybody,I have a dumb question about mining my own transactions.One month ago, I transfered my btcs using a old software and the fee for mining went with zero; So, four days, five days, six... and nobody confirmed my transaction; So, I made other transaction with 5 USD to mining my transaction and invalidate older.It's not right, I know, but I was desesperated.After this day, I think about it everytime and one question doesn't go with my head.If I mark my transaction on blockchain and confirm this 6 times, this transaction can be validated. What happen if I confirm 6 times a double spend or one invalid transaction with fake coins?Imagine that if I pass for one exchange wallet this with zero fee and confirm for my own transactions and there, I change for other coin and withdraw.Where is wrong my thinking?Tks

### Reply 1:
You can't have two transaction validated in a double spending situation. The one with the highest fees will be validated first and the second one would be invalidated.

### Reply 2:
Ok. Thanks. If someone (miner) using a normal mining program and visualizer this transaction, the highest fee is processed first and the other is invalidated. But who is responsable to invalidate other transaction and kill it from blockchain? Is the own miner program? Somebody know?

### Reply 3:
There is the mempool and there is the blockchain. The process to add and reject transactions getting on the blockchain is done by all mining nodes (confirms). The flux you are observing is mempool activity.

",[]
10712,"Date: 2018-03
Topic: (Review/Guide) Hotmine X5 upgrade kit for Antminer S1/S3/S5
### Original post:
Sweet! Will be nice to see how it goes.Almost makes me regret giving most of my s1's to sidehack for parts...Looking at the pics looks like there is no buck regulator and the string(s) are directly fed by the PSU. Effective but of course now the only way to control the chips Vcore is by adjusting the PSU itself (not that most intended users would/could). Only real downside is that if thin PCIe cables are used the chips just have to live with the reduced voltage out of them.

### Reply 1:
Nice, hardware porn

### Reply 2:
I have 2 S3s dusting in the shelves. Let see how this goes.

### Reply 3:
I'm wondering why don't they sell it to broad masses of S1/S3/S5 owners? I am trying not to buy several X6 upgrade kits - still no result (may be they will say something before the end of this week, if not - I buy Avalon741). And I have not yet heard that someone bought these upgrade kits...

### Reply 4:
Yeah, I've only seen two of these kits: yours (X6 kit) and mine They do have a lot of potential customers. I bet there is a lot of people who still have old Antminers.

### Reply 5:
I sent an e-mail to them with exactly the same words! Looks like they just have no interest in such business...

### Reply 6:
Wonder if they'd do a group buy or a bulk buy to a reseller.Also I have a half-dozen or so S5 controllers if anyone does get their hands on one of these and wants a brain for it.

### Reply 7:
I'd definitely be interested in a group buy!!!

### Reply 8:
I'm still waiting for the BB board but I did something today, see the 2nd message in this thread.

### Reply 9:
I emailed twice for purchase but no reply.I'm in if they can deliver.

### Reply 10:
At least you could send them an email. I couldn't get their web form to work. Pressed the button and nothing happened. No error message. No confirmation. Nuthin.Seems like this has a lot of potential, but only if we can communicate with them, and if they are really making and selling the upgrade kits.Anyway, here's hoping they're really doing this. The more alternatives we have to Bitmain the better, especially with all the recent hullabaloo.

### Reply 11:
Hey everyone. Wanted to let you know that I received a response from hotmine!They basically asked me:1) How many & which kit do I want2) My addressHagssFIN I assume since you obviously have a kit, you can vouch that this is a stand-up company?

### Reply 12:
Anyone in the US who gets one of these for an S5, I'll buy the old hashboards off ya.

### Reply 13:
I'm in US. Trying to get 3x kits, so may have 6 hashboards. We shall see - PM me.

### Reply 14:
NY here I want one $480

### Reply 15:
Nice review. I have some S5s with dead Hash boards if you want them for kit work. Can send a big box.

### Reply 16:
Yes I can confirm that I had a smooth deal with Hotmine and mr. E. Turanov for this X5 kit.This is a good kit for those with needed DIY skills for the upgrade.As soon as I get the BB board and get this running I can have my final words on this.Thanks, but I'm not planning to do a business on this.

### Reply 17:
DIY skills? Seems like it requires practically none as long as you have a human brain. Nice review, almost the same as setting up my initially finicky SP20s. Keep us updated on how cool the miner is during operation and how it actually performs!

### Reply 18:
Sounds like a good job for PhilI am interested in a few kits

### Reply 19:
Biggest DIY skill to know is that when mounting the board to heat sink, cross-torque the screws moving from the center of the board out towards the outside screws to prevent what you called 'Taco board' (warping it) along with using a minimal amount of thermal compound. Use just enough to give a very thin layer.Given how sharp the fins on the heat sink are, wearing gloves might be a good idea as well. Found that out long ago while doing a couple s1 > s3 upgrades...

### Reply 20:
Yeah it is not rocket science. If you can handle tools and you know some miner firmware/software stuff you will be fine with this upgrade kit.It should be really easy with the S5. With S1 and S3 you need some additional modifying.By the way, check out the first three posts in this thread and updates by me!I got the BB board in the mail, and the build is now ready. I have some results running it with Enermax Revolution 87+ 1000W PSU.

### Reply 21:
Great review HagssFIN! Thanks for going through the trouble.There's something delicious about an Antminer running Bitfury chips I'm interested in the X6 upgrade but haven't been able to get their contact form to work.Does anyone have an email for them? Hopefully they're really accepting orders.

### Reply 22:
Yup, I agree with you. That sheet metal will get you good if you do not protect yourself or use other precautions. I have some good scars from about 15 years ago fighting with a PC. I learned my lesson, but it took me two goes before I did. HaHa!

### Reply 2<rest of thread truncated>
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    ""hardware_name"": ""S5"",
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    ""hardware_name"": ""X6 upgrade kits"",
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    ""hardware_name"": ""hashboards"",
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    ""hardware_name"": ""Enermax Revolution 87+ 1000W PSU"",
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]"
10133,"Date: 2017-01
Topic: Antminer S7 Underclock?
### Original post:
Is there a way to lower the antminer s7 to under-clock it to around 4th/s. I dont really care about efficiency but its just so loud and i would prefer it a bit quieter. Thanks

### Reply 1:
yesI will post how for you.Set. Freq to 500Set fans to 30%Check your numbers after five ten minutes.You should be close to 4000gh close to fan speed of 2800rpmTemps should be under 60c for safety

### Reply 2:
Antminer S7 Batch 8 at Frequency 600 is 4,047 MH/sBut I suggest to use miners from Batch1-5 or Batch7 at lower frequency.

### Reply 3:
good point my info was for a batch 1 and batch 2 miner.screen shot is below is my batch 1 minerfan at 30%freq at 506hash at 4175temps are good pretty quiet lastly 0 hw's as in perfect.

### Reply 4:
Thanks for the info. I set my miner up at home and then brought it to school with me. The computer i have here cant run ipreporter, so i cant find the ip to control the miner. What else can i do (I have XP and Mac)

### Reply 5:
I am assuming that since you are moving you miner around between different networks that you are leaving it set to DHCP right?

### Reply 6:
I dont know what it was set to, i didnt change the default setting though

### Reply 7:
mac has an ip appIt is on the App Store

### Reply 8:
Alternately take the miner home & set the ip to a static one so when u move it to another network u can still get access to it to change the ip address to suit you network if necessary once moved

### Reply 9:
advanced-IP-scanner on XPOn Mac I use iNET-$9.99 in App store (bought it before for $4.99), works great

### Reply 10:
you can also download a program called FING, it works great to find all connected ip. or just go in your router, and check connected devices.

### Reply 11:
what is the lowest block speed it will run on? i need to run it at 300 what kind of ghs do you think i would get for 1 board at 300? 750 ghs? going to replace the bad s5 boards with 1 s7 board and if possable use my s5 fan' and heat sink for a more efficent mine.

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14097,"Date: 2011-05
Topic: BTC Poolwatch
### Original post:
So is this totally a teaser? No website or api calls available yet? It looks cool, but I'm bummed I can't use it...

",[]
11635,"Date: 2011-09
Topic: CGMINER CPU/GPU miner, GPU overclock+monitor+fanspeed in C for linux/windows/osx
### Original post:
MASSIVE UPGRADE VERSION 2.0 - Links in top postMajor feature upgrade - GPU monitoring, (over)clocking and fan control for ATIGPUs.Executive summary:You have to make sure the display for all devices is exported on linux for all cards to be seen with ""export DISPLAY=:0"". NFI what you need to do on windows.Add overclocking settings, GPU and fan control for all cards:cgminer -o <link> -u username -p password -I 9 --auto-fan --auto-gpu --gpu-engine 950 --gpu-memclock 300Add overclocking settings, GPU and fan control with different engine settings for 4 cards:cgminer -o <link> -u username -p password -I 9 --auto-fan --auto-gpu --gpu-engine 950,945,930,960 --gpu-memclock 300---New command line switches:--auto-fan Automatically adjust all GPU fan speeds to maintain a <truncated> Automatically adjust all GPU engine clock speeds to maintaina target <truncated> <arg> Set the GPU engine (over)clock in Mhz - one value for all orseparate by commas for per card.--gpu-fan <arg> Set the GPU fan percentage - one value for all or separateby commas for per card.--gpu-memclock <arg> Set the GPU memory (over)clock in Mhz - one value for allor separate by commas for per <truncated> <arg> Set the GPU powe<rest of post truncated>

### Reply 1:
You've outdone yourself!Testing now and it's a beaut so far, especially the temperature display and virtually non-existent rejects since 1.6.x. Should have more on stats after several hours.

### Reply 2:
wow what an update! gone testing! P.S. ckolivas, why do you use --auto-gpu and --gpu-engine 950 together in your example? how is it possible together auto and non-auto gpu? is there a reason?

### Reply 3:
You need to tell it what speed you actually want auto-gpu to go up to...I thought I covered all that in the extensive README.

### Reply 4:
only one gpu temperature is visible. i use windows 7 x64. i'm not sure but i think custom overclocking settings are applied only for this gpu only as well..<link>

### Reply 5:
cgminer -c <truncated> --auto-fan --gpu-engine=840 <truncated> 6 12:44:39 lt cgminer: cgminer: --auto-fan: unrecognized optionJust cloned from the repo.

### Reply 6:
Well, I did try the new version but it doesn't work for me at all. When I use a config file, it crash/reboots my system. The --auto-fan is a non-existent option and running it from command-line just locks up the console with no output whatsoever.

### Reply 7:
Wow Con, you've really outdone yourself this time! That looks like a jaw-dropping changelog, more than I could have ever dreamed of. This level of control should theoretically allow for 100% stable mining since all factors are now taken into account and adjusted towards a stable mining process. This is exactly what I was looking for, I'm leaving on vacation for Mexico in two weeks, it will be nice to know that cgminer is doing its best to keep my rig stable, considering that I'll be on the other side of the planet, way too far off to push the reset button in case the driver is in a fit and crashes. Can't wait to try it out!

### Reply 8:
Wow, holy crap, way to go on the update!

### Reply 9:
Okay, turned out that I didn't have ADL files in the folder. Con, please fix the readme file in that folder as the adl_structures file isn't checked by the ./configure but doesn't compile on make.

### Reply 10:
Wow, this will be great if it works on my non-reference Gigabyte Super Overclock 5870 in a ViDock/netbook setup. The Gigabyte OC Guru tool doesn't work in that scenario (doesn't see the card), and the Catalyst Control Center isn't available for it to use the OverDrive features, either. So far, because the OC Guru doesn't work in this setup, I've had to use reference cards with OverDrive, only, if I want to overclock.

### Reply 11:
It checks for only one of the header files. I assumed that the instructions saying to were clear enough.

### Reply 12:
Thanks =) And thanking you muchly for your generous donation. I'm glad people appreciate how much effort this has been.

### Reply 13:
It was suggested on IRC that since we are exporting all the displays like an active one in linux, it may be that the lack of outputs on the displays on windows is why the adl library isn't talking to them. i.e. perhaps it's only the cards connected to monitors or dummy plugs that work.

### Reply 14:
What is NFI? How can I make these cgminer stats work with 4 GPUs? I have one dummy plug, should I make more?

### Reply 15:
<link> the dummy plugs will help. Try one and see if that card comes up too. Also see which card it is that happens to be working in the list.

### Reply 16:
I just tested it on my desktop, and it overclocks the card just fine, so at least I know in advance that it doesn't matter whether it's a non-reference card or not. The real test is going to be if it also detects the card and can overclock it when plugged into my ViDock setup over at a friend's <rest of thread truncated>
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13966,"Date: 2011-05
Topic: Auto restart
### Original post:
Is there a way to set up my pc to auto restart if it shuts off?I already have installed TeamView so I can control my rig from work, but sometimes it shuts off and there is nothing I can do.

### Reply 1:
More info would be needed on the motherboard, operating system and general system setup to give a good answer, but I'm guessing the system probably shuts down because of heat or power supply issues? If so you might be able to set the BIOS to automatically start after a power loss and use something like this product to power cycle it from a remote location:<link> course the better option would be to find the real cause so it isn't necessary.

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    ""hardware_name"": ""TeamView"",
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  },
  {
    ""hardware_name"": ""motherboard"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""operating system"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""BIOS"",
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16762,"Date: 2011-07
Topic: Unstable Rig - how to diagnose
### Original post:
4 x 6870's biostar 890FXA hextec 1050W power supply2 risers for the gfx cardsstock <truncated> fan control on ubuntu 11.04i got 4 rigs running and this particular one always seems to die on me, hard crash 4-48 hours after rebooting. Problem is it runs for at least a few hours so im never able to catch it int the act. Anyone know how to diagnose this problem? I'm looking for tips/tricks something beyond standard trial and error.. maybe some kind of monitor program, crash log file i dont know about, whatever.

### Reply 1:
Are you using 64 bit?

### Reply 2:
I would say its an overclocking stability issue, maybe one of those cards is of a slightly different version and cant achieve the same high clock.

### Reply 3:
I would go with PSU issue myself. Cards are running stock and its a random crash. If the temps are ok I would normally go with that

### Reply 4:
I can tell you I have a couple of rigs that are particularity finicky. It was a cooling issue for me, I got to the point where I am running an a/c unit right into them, and they don't lock up anymore

### Reply 5:
aye he's right heat can be a cause. with random timed crashes depending how hot your gpu ovens get. airflow on that system could be a little different and its causing the crash.My mining pc is no longer in the main house. Its amazing how much cooler the house is now.

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24036,"Date: 2022-10
Topic: Configure Antminer s19 pro to reduce hashrate and power consumption dynamicly?
### Original post:
Hi Everyone,I want to use my extra solar power generation for Mining. I live in Australia and electricity power is expensive and the network buys my feed-in too cheap! My extra production is variable between 0 to 5KW and I want to use only that extra portion. I have an Antiminer s19 pro which uses 3kwh (no ssh access). Its firmware version is ""Thu Jun 9 13:06:22 CST 2022"" and Log shows ""Linux version 4.9.113 <truncated> and ""type: Antminer S19 Pro"". It has 3 boards,Question is, can I change the frequency or enable and disable Hash boards to somehow control the amount of power consumption quickly (I don't care about the hash rate or <truncated>

","[
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20171,"Date: 2015-01
Topic: Am I really mining or not?
### Original post:
I just recently got a butterfly labs Jalapeo mostly out of curiosity so while it's on the way I decided to setup a wallet, join a pool and see if I can actually get things going. At the moment though I'm questioning if I'm even connected to a pool at all since no worker (only 1 is setup in 2 pools) is showing up as working in the stats pages. BTC guild is the 2nd pool I joined and on the worker summery page, the speed is 0 but on my current client (Asteroid on a Macbook Pro) I'm mining at 11.83MH/s. While that is low for sure I figured I should at least see something on BTC guilds dashboard showing that my worker is in fact actually setup correctly.

### Reply 1:
Jalapeno speed is about 5GH/s. So maybe fault unit.

### Reply 2:
For a second I thought you were getting 11.83 MH/s with the Jalapeo, which really raised my eyebrows, but from the context I assume you're mining with your mac's CPU? I think I know exactly what your problem is. Essentially (I'm oversimplifying here) what mining pools do is they split a large amount of work with high reward (finding a block) into a smaller amount of work with a lower reward (finding a share for the pool). This reduces variance for most miners. However, your computer is so slow at mining that it will take you a relatively long time to find a single share (as many pools enforce a minimum share difficulty of ~256). Try mining at a pool with a much lower minimum share difficulty (polmine has the lowest I know of). You seem new to this, so if you have any other questions, give me a shout!Also, I would highly not recommend mining with your macbook--laptops typically have trouble cooling themselves at max load and your computer may overheat.

### Reply 3:
What armedmilitia said might be true. Could you please post the screen shot of your mining software?

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11998,"Date: 2012-08
Topic: CGminer v2.7.0 on Broadcom based DD-WRT / OpenWRT
### Original post:
Don't know about openwrt... lots of people have asked, but no one has said they've done it.Upped to 2.7.0

### Reply 1:
I tried it, but I got tired of my failing to get it running propably .....I'm just a noob to this (no clue what im dooing or did do) ....Tried switching to a raspberry pi but that think is a"" little miss princess"" when it comes to USB connections (hubs cables and devices...). So I'm back to my power hungry Mac mini + windows 7 VM. That runs fine and is really no hassle to configure at all

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    ""hardware_name"": ""Mac mini"",
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    ""hardware_name"": ""Windows 7 VM"",
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13411,"Date: 2015-07
Topic: Looking for a good decompiler - any suggestions?
### Original post:
Hello all,I'm looking for a good (free ) decompiler that is capable of decompiling Bitmain firmware - can anyone give me a suggestion?Thanks.

### Reply 1:
Bitmain firmware is basically just an OS partition.Nothing to do with decompiling.

### Reply 2:
Thanks kano, I realised my mistake while at work earlier..... Can you recommend a suitable (cross platform?) decompiler for regular <truncated>

### Reply 3:
Why would you want a decompiler when you can just use the source code?

### Reply 4:
Most of it:<link>

### Reply 5:
I'm looking for a good decompiler for software that doesn't provide source code.

### Reply 6:
There's only one that's even marginally good for compiled (non-interpreted languages), and that's Hex-Rays:<link> being said, you can't recompile what you decompile, so it only will give you is slightly more insight into what they're doing... You're better off just getting a disassembler and working in assembly - it will completely work, and you can do whatever you want, but it's also much more difficult.

### Reply 7:
Which software in particular? Its hard to help without knowing specifically what you are trying to decompile and why.This is very true, reversing most compiled languages such as c and c++ is very difficult. The software on bitcoin miners is mostly written in c with scripts controlling execution and configuration.

### Reply 8:
Last time I looked at it HexRays was not ready for production use. With trained eyes, disassembler and debugger it's possible to locate algorithm inside a program and make usable C sketch of it, but it takes A LOT of time, think ~3 full days for 100 lines of C code.

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15500,"Date: 2015-03
Topic: (Why) is vanitygen less resource-intensive than mining?
### Original post:
As I understand it, vanitygen works in a very similar way to standard Bitcoin mining. Both processes use either the CPU or the GPU to solve SHA-256 hashes. And yet, when I run vanitygen on my laptop, it can do so for days on end with no excessive overheating and little performance impact. I've never tried mining on my laptop before but it seems to be universally discouraged because it is said that any laptops that do mine will inevitably overheat and fail. This also seems to be true for mining non-SHA-256 coins where no ASIC currently exists.I have a fairly basic understanding of how vanitygen and Bitcoin mining are similar, as well as how they differ. With vanitygen, you look for a private key that corresponds to a desired address. To do this, you find the SHA-256 hash of the private key. If it doesn't correspond to an address you're looking for, then it moves onto the next one. With mining, you hash the block header repeatedly, changing one parameter until you find a specified target. Both processes use the SHA-256 hashing algorithm.So why can I run vanitygen for four days straight with my laptop staying cool and yet I can't mine cryptocurrencies like Darkcoin (or Bitcoin before <rest of post truncated>

### Reply 1:
You can mine on your laptop. The problem isn't keeping it cool if it can run vanitygen without overheating. The problem is that your laptop isn't powerful enough to mine enough coins to pay for the electricity it's using. Hope that helps.

### Reply 2:
Just to expand a bit on OgNasty's to-the-point reply:As you mention, you haven't actually tried to mine Bitcoins on that laptop - but if you did, you would find that the CPU/GPU load is very similar. So there's no difference between mining Bitcoins and generating vanity addresses as far as load and associated temperature goes.There might be some difference when using certain altcoins - either because the mining process hasn't been optimized as far, or because there's parts of the mining process that don't depend on processor-intensive bits. No idea if Darkcoin belongs in that category.High temps will invariably shorten the lifespan of components no matter how that high temp is attained, which is why it's generally discouraged - especially since CPU/GPU mining of Bitcoin is, nowadays, pointless beyond any educational purposes. ( See OgNasty's reply )There's some additional trouble if the temperature is allowed to fluctuate wildly as materials expand/contract repeatedly.However, there's little indication as to how much lifespan is shortened, and how much lifespan a CPU/GPU has to begin with. Some laptops crap out well within 6 months even if just used for non-intensive things, and so<rest of post truncated>

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22985,"Date: 2019-06
Topic: any industrial plug to monitor the consumption???
### Original post:
hi guys, i'm thinking to attach some industrial plug to monitor the consumption for each Asic miner, but I can't find a proper one.my concern is the safety. any suggestions??? I was looking on these, but i don't like it...Belkin Wemo = Smart Plug, not industrial and someone reported with burn TP-Link HS110 = Smart Plug, not industrial and someone reported with burnInkbird = Temperature & humidity controller, industrial, one of the Wifi is 1100w only. other models are not suitable to monitor & control. Standard plug = it gives watt, amp, consumption, etc. at the moment there are no problems but it looks cheap, it cost $15. no Wifi. Efergy Ego Smart = not really sure, it has 3 stars ratting on amazon EnergyVIEW Pro = only 1200w and I can't find any datasheet. it's available in Sri Lanka

### Reply 1:
Not sure where you are located but you may want to build a variation of this if you can't find a suitable Manufactured option. 220/240V North America power meter - DIY Under 60$ CAD

### Reply 2:
Why are you looking for an industrial plug ? I do not see the need for measuring the power 24/7 , why not just get a cheap killawatt and measure the consumption for couple hours, it will give you the average and that will probably be it all year , decade long.I don't understand why would you want to invest a lot of money doing something that might might ""unnecessary"" , it's not like the gears will consume different power everyday , unless I am missing something!

### Reply 3:
The power usage can vary a lot throughout the day, so maybe you can use the killawatt for one day to get a daily average?Or you could get a metered PDU to test the miners on - <link>

### Reply 4:
here is the missing part...I was going to install it in my mom's apartment (back once per 2 months +-) and the building has some regulations about the electricity. Because of safety in all aspect, I will place it in my friends warehouse that it's in another city.My safety concern is the installation, fire, comfort. I saw some news that some people burned the building, got fined because of regulation, etc....Like I said above, smart plug are not industrial and some people reported burned, so imagine if I plug it to an Asic miner.Yea I was looking on some PDU but... too expensive and not really sure if will be suitable for me, too many options with upgrades and it's used on servers.After all research I saw something really <truncated> what I'm looking for but the price is little too high, if I can get it with the shipping fee, it will be like a PDU price. I didn't have time to check the other 2 models, it might be the answer...<link>

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23009,"Date: 2019-07
Topic: Another S9 not working
### Original post:
What firmware version are you running? It's unusual for an autotune miner to have that ideal rate. I would recommend trying the May 2019 firmware (or Dec 2018, if you are uneasy about no longer having SSH access to the miner), and see if that helps.

### Reply 1:
Hi.I have had this running for a while and have been having issues with it recently. I cleaned it out this morning with a compressor and now its showing this:<link> can someone help? Thanks.

### Reply 2:
You need to post the complete Kernel log.anyhow, the middle board/chain is missing 1 asic, shouldn't be a problem but I have personally seen a whole gear fail to start mining due a few asics missing from a single board. so here is a list of trouble shooting process you need to go through.1- disconnect chain 7 , power the miner on and wait for 10-15 mins see if this solves the problem ( very likely )2- flash a different firmware version, roll back to old firmware 2017 if possible fixed frequency.3-perform a hardware reset using the IP report method, while miner is powered-off , hold the IP report button, power on , don't let go of the IP report button , release after 10 seconds.This issue can also very possibly be related to PSU so if all the above fails i would test with a working PSU.

### Reply 3:
Do try booting with Braiins OS, you can simply put an sd card and move jumper jp4 to boot from it. Braiins OS allows fixed frequency settings among other goodies. Take our the sd card and move the jumper back and its like nothing ever happened.Far better than messing with Bitmain firmware, especially avoid 2019 versions.

### Reply 4:
Thanks everyone for the advice.I have had to pinch a fan from it for another miner. When you say chain 7 do you mean the J7? Would this mean the middle hash board is faulty?Ok I have just tried disconnecting J7 with using a fan from an A3These are the results<link>

### Reply 5:
Thanks just been looking on <link> It all looks a bit complicated.Do you know if I can download the old software from Bitmain?

### Reply 6:
Ok great news, your miner is working now , seems like i guessed it right ( surprisingly ) , despite there is no reason "" or non that i know about"" on why would a missing asic on a single board will stop the miner from mining, still it is a fact.so what do we know now ?1- the control board is ok2- fans are good3- psu is probably good ( there is a chance that it can run 2 boards but not 3 - but this is very unlikely)now the only way for you to get that other board to work would be using a different firmware, you might get lucky and find a firmware that will still force that board to run despite the missing Asic/s, for a starter if you are not using 2019 then simply try old firmware such as the 2017 versions , try every firmware bitmain has except for the 2019 version.if all fails, or if you are already using 2019 firmware , then i would follow @Artemis3's suggestion and try Braiins OS, in fact you have a better ""hope"" with it than with all bitmain firmware's combined, but for the sake of simplicity it's always wise to try the ""easy"" fix first.

### Reply 7:
Do you mean firmware?You can download the old firmware from Bitmain website from here <link> you still having an issue with one hashboard?Can you post the whole Kernel logs here so that we can analyze your miner's issue. You can find the kernel logs under system>kernel log> then copy them all and paste it to pastebin.com and put the link here or paste it here as a code. Don't forget to put the Hashboard chain(7) then run for 15 minutes then start copying the kernel logs and post it here so that we can check if the chain (7) has PIC fw issue.

### Reply 8:
<link>

### Reply 9:
There is no complication if your miner has the sd card reader (some don't).All you do is:put the image in the sd cardturn off minermove jumper jp4insert cardturn on minerIt cannot be more simpler than that. Well it actually can, if you decide to flash it to your controller instead...Never ever use Bitmain firmware from 2019, it won't let you downgrade, and closes ssh.

### Reply 10:
It looks like the chain [7] is running fine now according to your kernel logs and the PIC fw is showing the same as other hashboard so I think your problem is solved?Do you have another problem with the miner?How about the miner's status in WebGUI?

### Reply 11:
If installing to an SD card download this file<link> installing directly to the controller via a web browser use this<link>

### Reply 12:
Hi Please can someone help me install the Braiins OS software?I don't understand which file to use from there website to flash my SD card with?Thanks!

### Reply 13:
The recommended firmware already mention above.Then step by step guide you can find here <link> Check this video <link> for windows or this one <link> for linux.Follow this <link>

### Reply 14:
I finally managed to install the braiins os.I am not getting this<link>

### Reply 15:
I don't<rest of thread truncated>
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15454,"Date: 2015-01
Topic: How much Data/Month Would a Miner use?
### Original post:
I am getting a Miner that is 10TH/s. I am going to be putting it in my grandpa's hangar where there isn't any Electricity bills. I need a internet connection there so I was thinking of getting a 4G router instead of a traditional internet connection, since I don't want any data overages I need to get the right data plan. So how much would it use?Also is this a trusted site?: <link>

### Reply 1:
Hold on a second, I'm pulling up my specs right now...EDIT:Alright, it looks like with my setup I'd do under 3GB per month. It's only pulling 1KB/s at max. You could mine on an old POTS dial-up line. It basically sends small texts back and forth. It's hardly any data. And when the stratum protocol came out, it made it even less.And I've never heard of the website. I'm running some AntMiners.

### Reply 2:
Thanks for your input.Also what miner would you recommend? [Power draw doesn't matter]I was thinking <link> or the previous one if the site turns up to be legit.

### Reply 3:
That site has all the signs of being a total scam. It is just too good to be true. For example they claim to use a 20nm ASIC chip. As far as I know KNC are the only people with 20nm chips and that took a major development effort.Also drawing just 2100 Watts to run 10 Terrahash makes it the most energy efficient miner I have ever heard off, by a wide margin.I like their 10 year warranty. It would be nice if it was all true.There are also lots of other indicators of this being a scam - exactly 500 Facebook likes, no prior history etc etc.In summary treat minerslab as a total scam.

### Reply 4:
re: the subject lineThere's some decent threads over on reddit about the bandwidth use of a full node, example:<link>

### Reply 5:
I was thinking about getting this: <link> then using a cheap data plan from metropcs. Since they have unlimited data I wouldn't go over, but would it be too slow after throttling?

### Reply 6:
Minerslab is definite Scam site. See<link>

### Reply 7:
Thanks. I'm just going to get some ANTMiners from BITMAIN then.

### Reply 8:
Do not buy any ASIC. You will never recoup your investment. You will LOSE MONEY, and the only people who will make a profit are the ASIC <truncated> my previous posts. I have been proven correct time and time again, and yet fools who cannot math continue to buy them and lose their asses on the deal.And what's the sense of a 10 year warranty on an ASIC that will be obsolete in 6 months?

### Reply 9:
This is not true if you have low kW prices.. For less than 0.15 cents per KW you'll may ROI with current asic generation.

### Reply 10:
If you have to depend on the price of power to squeak out the slightest profit, you're doing it wrong. What if BTC price continues to drop? What if difficulty continues to rise? In either case, you make less and will most likely lose money.Maybe I'm just smarter than most of the people here, but I didn't get into coin mining to lose money. I made some nice tax free cash on it, about $5000 profit after parts purchases and power usage and all that was taken into account. And when the profit started dropping off, I got out. I looked for ways to keep making money in coin mining, but there were far less opportunities.

### Reply 11:
haha 10 TH/s @ 2100 watts ROFL most efficent miner to date is .55 w per GHS that i know of and thats the S5which equates to 5500 watts per 10 ths KNC announced a 20nm chip in march <link> but we all know what KNC did with their customers money they ran off and created cloud mining in iceland with it.Maybe they are using this <link> hahaha

### Reply 12:
It also depends on the pool you mine on and the protocol you use.If you mine Stratum vs GBT to a pool, then the Stratum pool will use way less data than a GBT pool.Also, even on Stratum, there is a minor difference depending on how often the pools sends you work.However, in this case, it is better for bitcoin transaction processing if the pool sends you work every 30s, and the pool itself, on average, will get more transaction payments due to using 30s rather than a longer work delay.Some pools delay longer than 30s, but the data saving is minor, and it is better for bitcoin (and block reward) if it is 30s.

### Reply 13:
Hi. I got a limit of 2gb on 3g connec4ion. It works with to mine some btc?

### Reply 14:
Few GB per month at most depending on what coin your mining and how many shares are being submitted per min. More shares more data but to be honest they don't use that much but id make sure you got unlimited data connection to cover its use.

### Reply 15:
The only concern would be the stability of the connection. I don't know what its like over where you are but down here in Australia, wireless is pretty shit.

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16873,"Date: 2011-08
Topic: Miners detecting only 1/2 GPU of 3...
### Original post:
Guys, interesting problem here.I have one motherboard with 3 pci-e slots, 2 x16 and 1 x4 and 2 XFX 5850 and 1 Sappire 5850 Xtreme...Mining with 1 GPU in the x4 slot works perfectly, mhash's stays same as mining with x16 slots...But I'm having trouble to mining with the 3 GPUs at the same time.. poclbm and phoenix doesn't recognize 3 GPUs... (didn't try other miners, but I prefer one of these)...I've installed a fresh install of ubuntu, and linuxcoin, and in the aticonfig --list-adapters I get 3 adapters, 3 hd series, but when I open the miners, only 2 (or sometimes 1) appers, and the CPU...what could it be?PSU can handle them btw

### Reply 1:
anyone?

### Reply 2:
catalyst/sdk <truncated> want to testCode:aticonfig --initial --adapter=all -f

### Reply 3:
Its Linux, so, I guess, no dummy plugs required right?Catalyst 11.5, .6, .7 with SDK 2.4and the aticonfig --initial --adapter=all -f was executed

### Reply 4:
Update your bios or read your mobo manual there might be a restriction concerning more than 2 gpus.

### Reply 5:
Can you run other aticonfig commands against all 3 cards? I.e.Code:aticonfig --adapter=all --odgtaitconfig --adapter=all --odgcetc...I wrote my own detection script for smartcoin - you can download the <truncated> from svn (<link> It would be interesting if it sees all 3 cards, as it uses pyopencl directly if you wanted to download and run it.I have personally seen CPU devices improperly identified as an opencl GPU device, so perhaps you're getting the same thing, just in reverse?

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13602,"Date: 2018-12
Topic: Bitmain Release AsicBoost for T9+
### Original post:
Hi, bitmain come to make public AsicBoost for Antminer T9 +!I just tested it, and it's a disaster ... 4.5 Th / s for 800W !!! I had to go back on a stable firmware without asicboost ... (with no dificult)<link> would be interesting to share your opinion here;)

### Reply 1:
Have you tried to reset it to factory default after the upgrade? You can reset the t9+ by holding a reset button or holding IP report button for 15 to 20 seconds or check the guide from here <link> you don't reset it before you run it there is a high chance that the firmware will not run properly. So, by resetting it to factory default the miner will refresh and the program will run properly.

### Reply 2:
Same....starts at 4.5TH then over and 1hour, raises to ~7TH. Restored to default. Same problem.

### Reply 3:
Same problem here, hope they fix this.

### Reply 4:
It works perfectly on some of my T9+ (around 1100W), but it either decreases the hashrate or completely stops hashing with few of them.

### Reply 5:
Same problem. My T9's now around 9,5 Th/s.

### Reply 6:
i'm thinking no asicboost at the moment ... bitmain is talking about ""reduce power comsuption"" but at no moment of asicboost ... so in my opinion no asicboost but just an improvement in efficiency ...I also achieve the same performance just by moding the bmminer codes,With their bmminer ""lpm"" the core open at 810mv which is far too little, and which is clearly planted chips ... they must open at least 910mv (original 930mv) ... I tested the downclock and no more problem ... but hashrate very low ...

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13403,"Date: 2015-06
Topic: Bitcoin Research Part 3, Mining
### Original post:
This is the third part of my research into crypto currency. This portion of research will cover mining software. There are different forms of mining and different forms of software used to mine. Some mining is hardware based and some software based. Hardware based mining is still software driven.Crypto currencies use 2 things: Proof-of-work and Proof-of-stake. Some coins lean more towards proof-of-stake and others towards proof-of-work. There is a big difference between the 2.The same is said for mining software. Some use one, others use the other. There are ways to set up mining software to reference proof-of-work or stake, but otherwise bypass them altogether and not actually use either of them. For example, bitcoin uses valid proof-of-work as a reference, but bypasses actually using it.// Copyright (c) 2009-2010 Satoshi Nakamoto// Copyright (c) 2009-2013 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or <link> <truncated> <truncated> <truncated> <stdint.h>class CBlockIndex;class CReserveKey;class CScript;class CWallet;struct CBlockTemplate{ CBlock block; <truncated> vTxFees; <truncated> vTxSigOps;};/** Run the miner <rest of post truncated>

",[]
23674,"Date: 2021-08
Topic: I need firmware upgrade Miner aixin A1 25?
### Original post:
Hi my friendCan u help me? I need upgrade firmware aixin A1 25th Please help me

### Reply 1:
Been mining since 2014 and have never heard of them.Is it a BTC miner?With the 'A1' in the name, does it use the ancient A1 chip from <truncated> If so - forget it as there is zero support for that chip.

### Reply 2:
Same here never heard of them before but I tried to search it on Google and I found that they don't have official website.I found this in some store but I would like to put a link where you can find this which is already posted here before.Link: <link> is actually an ASIC miner for BTC and the design looks the same as antminer s17.I can't also find an upgrade firmware for this miner. What I think is maybe he can flash this miner with antminer firmware?

### Reply 3:
A1 firmware. Please make sure you backup and use this one<link>

### Reply 4:
Dear Sir,I need software version: <truncated> you help me.Thank you very much.fahside

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9226,"Date: 2015-07
Topic: Antminer s2 Problem
### Original post:
Hello i have a littel problem with one antminer s2.Last days on of the board gets a row of XXXX after a restart the antminer s2 wont mine above 460 GH/sIn the cgminer i get 935 GH/s but really work is aroud 460 GH any help?You can see in the image below

### Reply 1:
One of mine started acting up in a similar manner(about half normal hashrate poolside but looked good in the UI) recently and a reflash of the firmware fixed it. Maybe give that a try? Guessing it won't help your bad board though. If issues continue you may want to remove it entirely and see if the others shape up.

### Reply 2:
Try to downclock your S2 a little. I know its running a stock speeds but the X's might go away if you downclock it a little.

### Reply 3:
Yes try and flash the firmware but also get the cooling down. 67 is pretty warm, mine were all around 57 and under with no problems. You can always move the board to a different slot and see if it's the board or a problem with the backplane or lack of power. (those stock psu's are pushed to their max.)

### Reply 4:
Try re-seating all of your boards. Also move the suspect board to a different slot and see if the problem follows it.

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21204,"Date: 2016-12
Topic: Is this still the best guide for Wireless Antminers?
### Original post:
I tried to follow the guide here:<link> I put in my IP instead of the usual login with root/root, I get <truncated> bad argument #1 to 'pairs' (table expected, got nil)stack traceback:[C]: in function <truncated> in function <truncated> in function <truncated> in function <truncated> don't have much of a networking background. I have two antminer's running, one I want to moveinto a backroom so I can power a larger 3rd miner. I'm using Windows 7. I'm using an S1 and S3.

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14636,"Date: 2012-12
Topic: What historical graphs / data are important to you?
### Original post:
Hello fellow miners,I've been interested and getting a better handle around the ""data"" that is produced from mining. Specifically, historical data that can be graphed or totals around a mining operation. So, in the interest of discussion, I've been wondering what other miners would like to know about their mining operations.I've come up with a few that I believe would be valuable to me.Plotting earnings over time against expected PPS.Seeing overall up times for pools I mine on.Which one of my devices / mining instances is the most problematic.I'd like to hear what other miners feel are important data to see in aggregate or graphed over time.Thanks,James

",[]
20760,"Date: 2015-11
Topic: Antminer not mining and not beeping
### Original post:
Hi i been miner for a bit now but suddinly my miner has stoped mineing i can connect to it via browers and it updateds corrrectly. i have tryed a number of diffrent pools and workers to make sure nothings worng there but each time i do this the minier stays idea and the minor status does not chaneg just stays blank was working up untill a few days ago any one have any ideas??

### Reply 1:
Hello Man thanks for you help but i figgerd it out aparintly an update of the firm ware on my router instagated by my internet providers reset my default IP address of my router. bloody basterds reconfigering my roted to my old settinf fixed the issue thanks very much for all your help though guys on this forum are awsome

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16515,"Date: 2023-05
Topic: T17 chip hashrate
### Original post:
Yo How to get hasrate of each chip on original firmware antminer t17?

### Reply 1:
It was said that to get the hashrate, we need to log in to the antminer site and navigate to the miner status. If we look for the the tab where Asic Status is located, I think we can see the hashrate of each chip shown in that tab. You can find more information if you check this support site of Bitmain: <link>

### Reply 2:
It essential to Note your Features of your antiminer and as well the maintenance to get your mining in running up good and save costs. You can upgrade your t17 firmware hashrate with any ASICs supported autotuning software

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23436,"Date: 2021-02
Topic: setup
### Original post:
I just bought three s9 used from ebay.When I press the IP button and enter the IP into my browser I don't get the configuration page.The other owner was from china from what I tell from IP address.I hope someone can show me how to get to the confiig. page.

### Reply 1:
If you haven't already, plug your PC into the same network switch as the miners are plugged into. Make sure you are on the same subnet as the miners are.If you can't get it to come up, you can try a factory reset, or re-flashing the firmware using the sdcard. Probably a good idea to re-flash them using the sdcard anyway, they could have put any firmware on there that could possibly steal your hashrate or infect your network with malware.<link>

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14086,"Date: 2011-05
Topic: Can't get above 25 MH/s
### Original post:
So I'm fairly new to the BitCoin community.I recently set up my miner and I was just wondering why I can't seem to get my MH/s above 25. It's really frustrating. I am using my GPU, and I'm using GUI Miner. My video card is a nVidia Geforce 240 GT with 1GB onboard memory. I haven't been able to find any topics about this specific problem, and I haven't been able to find any ""extra flags"" for my specific card series, either. Any help would be greatly appreciated! -maltaethiron

### Reply 1:
<link> are getting what you should on that hardware.

### Reply 2:
Ok, thanks for the help xe

### Reply 3:
protip: ati mines faster than nvidia (sorry, fanboys)

### Reply 4:
And nvidia games better than ati. (sorry, fanboys)

### Reply 5:
Games cost money and bitcoins are money.

### Reply 6:
Agreed. That's why I have NVIDIA in the gaming rig and ATI in the mining rig.

### Reply 7:
And you spent twice the money..

### Reply 8:
And really the performance of ATI in gaming isn't that bad - they do make their cards for gaming afterall

### Reply 9:
First benchmark I looked at:<link> looking pretty much neck and neck to me. Perhaps 5-10% performance difference at certain price points. Where is the evidence that they ""game better""?Overall there appears to be very little difference, with the exception of certain GPGPU applications, some of which favour certain cards (bitcoin mining being an obvious example).

### Reply 10:
My 5850 (paid for by bitcoins) is a fantastic gaming card. No reason to go NVIDIA IMO.

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9460,"Date: 2015-11
Topic: Any decent hardware that we can still buy in bulk?
### Original post:
hey guysDoes anyone know of any decent mining hardware that you can still buy in bulk? Really want to expand what I have Thanks

### Reply 1:
check for a MOQ of 10 Avalon 6 at blockc.co

### Reply 2:
Anything else out there with PSU's already included?

### Reply 3:
Honestly right now, they only new miners available are the Avalon 6 and the Antminer S7.You could check with Spondoolies for the SP50 but you need to get a data center and a lot fo cash. You could also check for old gear but always depend on you electricity rate. Good luck

### Reply 4:
Im looking forward to the release of the SP50... but currently they haven't got any info on whats going on... does anyone on here know when we have a release date of even know what the price will be?

### Reply 5:
Right now you need to contact Spondoolies directly to get a answer. They will ask you to prrove that you have the place and the $ to buy some. I do think that there is already some SP50 running.

### Reply 6:
surely if you pay the invoice they will start to build your sp50.

### Reply 7:
I suspect whenever it is out they have a NDA wrapped around getting one. So most likely have to prove your a serious buyer, and not release price or other information about it unless approved by SP.Which SP really has no big reason to release a lot of info if they are going after the big fish only. I'm not convinced they have a consumer version yet though.

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]"
13497,"Date: 2016-04
Topic: So... Bitmain ""MinerLink"" What Happened?
### Original post:
So as the title states... what happened to the planned ""MinerLink"" feature that Bitmaintech was going to/is going to offer to us miners? I have not seen any new updates on this feature and although there are several other mining softwares available, I am just wondering about MinerLink because it is/should be a hardware manufacturer supported software.<link> Any info here?

### Reply 1:
Probably yet another failed promise by Bitmain. They've had quite a few when it comes to software.

### Reply 2:
<link> That's about all they said on bitmain talk i discovered about two days ago .Not open to the Pubic yet.!!!

### Reply 3:
well that's disappointing but I appreciate the responses.

","[
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]"
10423,"Date: 2017-08
Topic: Sony APS-172 2800w really?
### Original post:
<link> everybody, I need to know about the power output this ""sony APS-172""I use 12v for bitcoin mining, but's the plate detail 12v /113.3a =1335wIsn't get up 2800w?, or i misunderstand Expand me please Thank you sir

### Reply 1:
You misunderstand.TOTAL power including the 3.3V @12.1A and -50V @28A outputs is 2880W but as stated on the nameplate the 12V output is only good for 1,335W. Just because you do not use the 3.3 and -50V outputs does not mean you can pull more from the 12V rails.With that high current negative 50V output I assume the supply was originally for telecom systems. This is why the IBM server PSU's are so popular - their main power output is only 12vdc and nothing else.

### Reply 2:
-50 volts at 28 amps is 1400 watts, or almost half the TOTAL rated power output of that power supply.That's NOT a standard computer power supply - like NotFuzzyWarm I'm inclined to believe it was intended for use in landline telecom equipment.

### Reply 3:
In that case i can use power 12v to peek up 2800w, like that yes or no sir

### Reply 4:
50V is what PoE (Power over Ethernet) runs at for enterprise use. One common standard is 0.35A per port, so that PSU can be used in a switch with 80 powered ports.That, unfortunately, is not very useful for miners. (It would be very useful for building a nice gaming PC with a super nice audio amplifier built in, but that's another story...) You could use a DC/DC converter to turn it into another 12V rail, but that's yet another added cost. Cheaper to just buy PSUs that are designed to run 12V only loads.

### Reply 5:
So From all commend get i think , i can use ""APs-172"" 12v full to 2800w ??

### Reply 6:
Not by itself. After 20% margin, you'll have a little more than 1kW to use on 12V.The bulk of the rest of the power would be on the 50V rail, which you'll need DC/DC converters to turn into another 12V rail. And then you might as well just buy another 12V PSU.A 50V (or 48V) PSU is very useful for DIY audio projects. A high powered audio amplifier and a Bitcoin miner in the same box would be an odd idea, though. A gaming PC with a built in high powered audio amplifier, however, would make sense. Because it is a -50V rail, you'll have some issues with level shifting (hint: S/PDIF fiber would work nicely with the least chance of breaking stuff), but then you'll have the option of powering the amplifier from 62V to get a bit more power.If you already have the PSU and aren't looking to do that kind of project, you'll probably be best off selling it to someone who is, then buying PSUs that actually fit your uses better.

### Reply 7:
For the 3rd time - NO!The nameplate states maximum power available for 12V out of that supply is 1,335W and that is all it will provide @12vdc. No higher peak allowed. PERIOD.

### Reply 8:
How many ways do we have to say ""Not only no, but HELL NO""?The +12V output is NOT rated for 2800 watts, it's rated for 1335 watts MAX and THAT IS ALL YOU CAN PULL OUT OF IT ON +12V.

### Reply 9:
Ah, forget what the expert forum members like notfuzzy and quint say over and over. You'll totally get 2880W out of the 12V rail. Hook it all up and go! (away)...

### Reply 10:
Actually, it's worse than that - I worked for Qualidyne as a production tech for a while, building and testing high-amperage supplies for IBM Mainframes (this was back in the 1980s, when a 5 VDC 100 amp or thereabouts switching power supply was almost the same size as many current ATX mini-tower cases and the bloody output supply rails on the thing were ballpark 1 inch wide quarter-inch or so thick BUS BARS)....

### Reply 11:
Hello,Did anybody tried to open-up this Sony APS-172 power supply? I do not succeed to do open it as I am afraid of breaking something if I force too much. It seems to me this device was designed not to be opended at all!!!I want to extract the fan cables in order to install an external speed variator. So if someones if knows how to open and dismantle this beast, some guidance would be most <truncated>

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8972,"Date: 2015-03
Topic: Ark Customized Version Of The A1 Chip Bitcoin Miner 1.5T ( low power consumption
### Original post:
Ark Customized Version Of The A1 Chip Bitcoin Miner 1.5T ( low power consumption ) EvaluationArk mining station (www.fz49.com) Original, reprint please indicate the sourceUnder the current caculate power soaring, mining more and more difficult. Under the Bitcoin market deteriorating situation , Bitcoin mining machine not to the past, to fight at all costs to calculate the force , now have to fight price-performance , mainly shows on single G power consumption. End of life in the mining machine to dig out the difference between currency and electricity. When the difference is 0 , mining machines have shut down, so power consumption indirectly reflect the life of the mining machine . 1T machine such as a daily output of 0.018 coins, electricity 24 degree a day, a half- count force 1.5T, producing coins .027 , electricity 36 degrees one day , when the currency * 0.027 < 36 * electricity prices, the mining machine on there is no need to continue to go on a dig ;If the force is also considered a low -power 1.5T mining machine , the same yield 0.027 coins every day, but power is reduced to 1100W, electricity 26.4 degrees one day , saving 10 degrees , apparently low-power mining machine l<rest of post truncated>

### Reply 1:
These look remarkably similar to the AMT ones reviewed here <link> the only difference is in the PCB color. The fans seem just as loud. Can you post a video of the actual power consumption while hashing? Also the fact that that AMT also admitted they would sell via various fronts, its hard to believe these are different from the ones being sold now. Please post more info. Considering the consumption of the A1 the power consumption by itself is very hard to believe. Maybe there is someone respected and trusted in the community who can lend more technical insight on this.

### Reply 2:
opieum2:With these 1.5T they're packing in more chips and not overclocking it.Previously with the 1 th they're only packing 32 chips and overclocking it hence reducing power efficiency.To remain competitive while continuing to use A1 chips, they pack 60 A1s and then don't overclock it or only overclock it slightly hence achieving the higher efficiency.All the major A1 vendors in China are doing this.

### Reply 3:
bro tak cukup power lah . . . add psu = more weight + increased shipping costs

### Reply 4:
This is The Ark customed version, the light is red . the Power consumption is 1127w.

### Reply 5:
This is 6 module. 5 module can overclocking.And our this miner can enough reach 1500G/HS. You can try to use 1.5T, it is not worse than 1T.

### Reply 6:
The Ark Customed 1.5T miner in large stock!

### Reply 7:
There is no guarantee.My 1150w power is boken.Answer from 69199742@qq.com is:""You can go to buy a local 1150 w power for replacement Even more so that you save money""

### Reply 8:
There is no way PSU @ 90+ percent load to be so efective.Also what settings your run A1 chips ( clock /voltage) in order to get 0.76 W/Ghs ?

### Reply 9:
I bought one of these from a Chinese reseller on Alibaba. The power supply died and I can't find a replacement anywhere. The P/S has no 24 pin connector. Just a 8-pin to the PCB and then 6 6-pin connectors to the mining boards. Now that selling miners is hard my reseller stopped offering them and won't respond to me. I need to buy a replacement power supply jst like the one in the picture. Can anyone point me in the right direction?

### Reply 10:
If you can take a picture of the connector we can try and work out the pinout, and so a suitable replacement.

### Reply 11:
you do not need that psu. looks like an evga 1300 g2 can replace it. the evga 1300 supplies up to 1250 watts no worries.It has six pcie connectors.what part of the world are you in?

### Reply 12:
I don't like doing it but you can use two power supplies. I did this one a 1T dragon when it's original PSU quit. One hooked up to a few blades and controller board. And one just blades. Worked for month's. I don't think you will find a way around not having power it if it's the board I'm thinking of.

### Reply 13:
This PSU would replace it and be a upgrade. Assuming stock freq it should pull around 1100 watts. So a 1250 or 1300 would do it no issues.

### Reply 14:
No offense but was this Google translated? On first read I thought you might be from Texas, ore mining really?Can't blame them on trying to use up all their old chips. Was a price stated in there somewhere?

### Reply 15:
I think it could possibly be that some words are from another miner. This looks and has same performance of the LKETC 1.5 T machine they made.I wonder if it's really a ""Ark Customized"" or a LKETC made machine.

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20157,"Date: 2015-01
Topic: Antminer S1 not mining
### Original post:
Hi guys, i am BRAND new to this forum and the antminer in general. before i get yelled at for creating a new topic, hear me out. I have been researching just about every helping thread and how-to on the internet for the s1. either people have ip setting issues where they cant locate the miner or have a direct miner config issue. My issue seems to be of a different nature, both antminer s1s start mining, but only says .5-.04ghs/s for the first 20 seconds, then just goes down to zero, also ive unblocked my router, it has no firewall now. I can set everything properly, nada. the miners both have the green flickering light showing that they are ""hashing"" and like i said, they mine and just produce no actual hashing. I am using btcguild so its the most common pool to mine in, can anyone help me out here? heres a screen cap. <link> i know the weird extention on the btcguild website name, ive tried the simple <truncated> as well, still does exact same thing. i also tried my triplemining settings, still does same thing. I NEED HELP!!!

### Reply 1:
Try a different PSU, and make sure it is providing enough watts. It's probably that.

### Reply 2:
I've got 2 Corsair TX750's if you need em. Worked great with my s1's when I had them.

### Reply 3:
I'm leaning towards a PSU issue as well. Sometimes the miner looks just fine but it isn't submitting any shares, that can be due to an incorrect DNS setting, but with such a low hashrate I'm betting on the PSU being the culprit.

### Reply 4:
i could offer remote support if still needed.. just pm me . cheers

### Reply 5:
I have recently just got a antminer s1. After setting everything up like pool info etc. the miner just won't mine. I have left it for 1 hour and still no results. I'm using a 500w power supply, could this be the problem?Thanks,

### Reply 6:
S1 power consumption is 360watt. What is you psu brand & type?

### Reply 7:
It's a Corsair CX500M. Also i changed a setting in the network tab on the miner for the ethernet from WAN to LAN and now i can't access it. Please help!

### Reply 8:
Put some load on 5V rail, like old cd rom.Try to reset the miner. Push & hold the reset button.

### Reply 9:
Could you explain where the reset button is becasue i cant seem to find any good explainations...

### Reply 10:
Near ethernet port(on the right there is a hole) if i am not mistake.

### Reply 11:
Where?<link> a picture)

### Reply 12:
Ahh, wrong version, sorry.The reset button is S2 button.This is the procedure <link>

### Reply 13:
Is there anything i can do to reset it not in the software?I saw this post<link>

### Reply 14:
Try the S2 button & see what happen.

### Reply 15:
So, I have set everything up again but its still not mining? Don't know why.

### Reply 16:
Could you post the screen shot of cgminer status page?

### Reply 17:
Which would be where?

### Reply 18:
Something like this <link>

### Reply 19:
<link>

### Reply 20:
Ok that weird. No board detected. Check if there is any loose connection from controller to hashing board.Pool info also blank too. Could you please post miner configuration page?

### Reply 21:
<link>

### Reply 22:
The password not ""X"" right?I don't know what wrong with your S1.

### Reply 23:
my password for my pools is x .

### Reply 24:
Try to change it to 123. Some pool didn't accept x as password.

### Reply 25:
Still not getting anything...

### Reply 26:
Could you post network setting page?

### Reply 27:
<link>

### Reply 28:
Ok. found wrong setting.Ip is 192.168.0.99Gateway should be <truncated> should be 192.168.0.255DNS should be 192.168.0.1Then add second DNS 8.8.8.8Your router address is 192.168.0.1 right?

### Reply 29:
It's finally working! Thank you so much!<link>

### Reply 30:
Gratz, happy mining

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13856,"Date: 2011-03
Topic: Windows 7 VS Windows XP, both 32 bit
### Original post:
I have quad core, 4 GB RAM with Sapphire HD6870 1GB for mining. & 2 hard disks. one is 500GB & other is 80GB.Usually i use win 7 for everyday life & mostly i will be installing & uninstalling any new softwares i see. & its always crowded with softwares.Only 3 days ago i got HD6870 & before i had 9400GT.i am getting 210Mhash/s at 900 clk (default) & 230Mhash/s at 999 clk OC.If i go over 1010+ system crashes & at 1005 i got white pixels..Having ati catalyst 11.2 & also SDK 2.3.Today suddenly i wondered since win 7 using more graphics ....for visual appeal, what if i try in xp, will i get more hash/s.So, i uninstalled all the nvida drivers & installed 11.2 & SDK 2.3 of xp.When i ran the same poclbm in win xp, it makes background things slow.when mining, everything takes time to open....system becomes slow.Some one used/using xp getting better than win 7 or same or less.Please any advices welcome.

### Reply 1:
Instead of going down to XP, you could try turning off Aero.

### Reply 2:
XP wasn't really done with gpu computing in mind. You could try setting -f 120 in the miner to improve responsiveness, but it's better to just use windows 7 or linux.

### Reply 3:
all i know is that aero doesn't affect performance on my 6870

### Reply 4:
I think everyone misunderstanding what i say.With aero effects turned on & many softwares running in background, mining doesn't affect other programs in WINDOWS 7The problem is only on xp. I think xp don't have aero effect.what niooron said maybe correct, xp may not have designed with gpu computing

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    ""hardware_name"": ""Sapphire HD6870 1GB"",
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23046,"Date: 2019-08
Topic: Fake fan sensor problem.. need advice.
### Original post:
Anyone know where can I get the Whatsminer M3 custom firmware that can ignore the fan speed check? Or I can only use the fake fan rpm sensor for immersion. Thanks for the advice.

### Reply 1:
As far as I know it will be fine, if you look at the picture it's just 3 wires. + and - and speed<link>

### Reply 2:
Thanks Dave.

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20490,"Date: 2015-07
Topic: Setup AntMiner u3 on Minera (Raspberri Pi)
### Original post:
Hi at all. I've purchased a Raspberry pi, and an Antminer u3. Now I've installed Minera and this software say me that the pool is active and ready, but the hashrate always is 0 Khash/s. WHY??? Can anyone say me which is the url and the server proxy of bitcoinCZ's site? Thank you very much!!!

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20991,"Date: 2016-04
Topic: The inquiry solo mining messages for New Block and Longpoll detected new block.
### Original post:
Dears,Now I am going a bitcoin solo mining againest my local wallet. but during mining process frequently I've get following messages. So just I wonder why these message show on my monitor screen? Does it normal?What is first messge for New block: ...eed5f4ab344d5c00 diff 167G ( 1.19Eh) means? it means that someone generate a new block and my mining software detect it on second messages?The messages are:[2016-04-04 13:20:33] New block: ...eed5f4ab344d5c00 diff 167G ( 1.19Eh)[2016-04-04 13:20:33] Longpoll from pool 0 detected new block[2016-04-04 13:20:34] New block: ...fcc0ebaa597f2c4c diff 167G ( 1.19Eh)[2016-04-04 13:20:34] Longpoll from pool 0 detected new blockThanks in advanceJohn Ahn

### Reply 1:
New block just means a block was found somewhere on the networks and your starting to mine on top of it now. As for the other not sure but what are you mining with? If it's a computer then it's probably because it's too slow to mine.

### Reply 2:
Dears,Yes, now I am running a 3 of Antminer S3+ for solomining of BTC. But I will added 3 of Spondoolies SP20 into this area soon. Regards John Ahn

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20741,"Date: 2015-11
Topic: Antminer S1 - Managing more than 3 pools from the web interface
### Original post:
I'm sorry if this is a repost, but I couldn't find it. Moderators, feel free to delete if it is. Also, I'm not sure if this belongs to Mining support or Hardware. Following the line of the post I mention bellow I posted here, but also feel free to move it to Hardware if you deem it <truncated> by this thread <link> and specially by n4spd's great addition that allows you to change the pool's quotas from the web interface (<link> message #15), I decided to try to see if it was possible to manage more than 3 pools from the web interface.I'm happy to report that it could be done quite easily. If you were able to do the changes described in that post, no extra skills are required. The following steps are for adding a 4th pool, but they can be repeated for N number of pools. I haven't tested it for more than 5, so I'm not sure how high can it go.1) First you need to vi (edit) file <truncated> Basically, copy anything that is there for pools 1-3 and change it to 4. The following is a list of changes I made, with the action (A=added line, M=modified line) and the line number where I made the change between []. E.g. the first line means add ""local _pool4url"" on line 22. The line numbers cou<rest of post truncated>

### Reply 1:
Hi there,Thanks for this post. I found it very useful but I had a problem with the second part as it kept saying file not found, which did not let me add the extra mining pools to the Mining Configuration Screen.However, I did get it working, with this revised second step for anyone looking to get this working. I have it now with max 9 pools (although I'm only using 6)For step 2, do the following to get access to the filevi <truncated> it working on the config screen And six of the 9 pools I have filled in mining away concurrently

### Reply 2:
Just a couple of learnings a few days on from this.I can mine six pools concurrently, mixing and matching using the xx;poolurl:port making sure that all the xx's add up to 100However, this evening, I tried adding a seventh pool details to my pair of antminers, and both had a hissy fit, and started beeping at me.On one I cleared the seventh pool details, and it kicked back into mining the six, but on the other, it continued to beep and not mine. So to fix this, I put in one at 100, and deleted all the rest (copying into notepad). I then hit save and apply, and a minute or two later the beeping antminer stopped and started mining again. I then put back in the five pool details and balanced them, and they mined away happily again.So maybe there is a hardware limitation of six pools, is there anyone more educated than me on the hardware side who can confirm?I know a lot of people won't use this for mining lots of pools with small amounts of hashes, but it is very handy having six pools in there, and being able to just change the figures around, without having to re-enter them the whole time

### Reply 3:
Are you mining on 6 pools at the same time?Also what kind of figures ar eyou getting from the wall with you miner at 325? are you running the pencil mod?

### Reply 4:
Yep,Well actually 7 now, I added ozcoin successfully after re-doing my config. The very nice person I bought the antminers off had pencil modded them, and I'm waiting for an energy monitor to arrive in the post before I can see how many watts it's pulling, so I can work out how much it's costing me to generate this.I have two miners running about 300ghs between them off one Corsair CX750 Bronze PSU. Electricity is really expensive here, so I'm intentionally running them undervolted, and only part-time overnight and off for about 12 hours a day during expensive time. They're more for reviewing pools and giving me bitcoin so I can test some website/e-commerce projects I do as part of my day job than making any serious money (unless someone on talk is based in Ireland and wants to do a deal to host them for me so I can run them 24/7 ;p)I spent the last few days since getting them to learn about the hardware, luci, learning putty, the wonder that is vi, read tons of posts on the forum, cocked things up a few times but now they are set up the way I want to potentially mine 9 pools at the same time, or at least have everything stored so I don't have to keep inputting pool information eve<rest of post truncated>

### Reply 5:
Hi,Is it possible to mine on all the listed pool? as far as i know, my machine only mine according to their numbers (eg pool 1 dead, it goes to pool 2 automatically).

### Reply 6:
I've pencil modded one of my S1s and its much less juicy - will be doing the other 2 tonight - running 3 off a Corsair AX1200 PSU was pulling 1150w now 950 after pencil modding one so hopefully will drop down to around 600 region after modding both = i might be able to make a profit!How are you mining on more than one pool at a time though? I can only mine on one at a time atm - that would massive<rest of thread truncated>
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22252,"Date: 2018-01
Topic: Avalon chain dropping hash HELP!!!
### Original post:
I can't seem to figure out why I am dropping hash average when multiple A6 machines are chained. I have separated them into 2 controllers:5 on one controller and 6 on the other. I have another controller on the way to split up even more. My hash rate is dropping to around 2800 gh/s when more than 1 machine is on the controller. I've seen as low as 1900 gh/s though. If I restart the machines, they start at 3580 gh/s and then drop from there, some going as high as 4200 gh/sI've updated firmware for all machines and still nothing. Here is a screen image from one of the controllers:<link> image:<link>

### Reply 1:
I have 20 A6's split on 2 controllers and mine do the same thing. Been fighting this for a couple days now. If I restart cgminer, it runs great for about an hour and then slowly drops. Over 8 hours or so it will be at less than half. If I restart it immediately jumps back up and is good to go.Someone please help us. So much money being lost. LolTheToddster

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23687,"Date: 2021-09
Topic: Innosilicon T3 50Th repair
### Original post:
Hi,I have some Innosilicon T3s 50Th that needs repair. Does anyone know any company in the US that repairs it? Thanks.

### Reply 1:
There is a site with a list of repair centres in the US for ASIC miners. You can check it from here <link> go directly to this link <link>

### Reply 2:
Yes but do you know if they are trustworthy and can they repair Innosilicon T3s?

### Reply 3:
Since it's from zeusbtc it should be trustworthy. Why not try to contact ZeusBTCdirectly instead to ask if they can repair Innosilicon T3s but I know they couldUse their contact us page to reach them- <link>

### Reply 4:
Thanks. Will do.

","[
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13691,"Date: 2021-05
Topic: Awesome Miner - Unlock Antminer S9, T9+, S15, T15, S17, T17 (free for everyone)
### Original post:
While I stopped running BM miners in favor of ones from Canaan a few years ago, I gotta say good job!This should make many many folks very happy

### Reply 1:
Hi PatrikeI have uploaded the awesome miner firmware on my T17. What are the settings I need to make next in order to get the hash rate boost?

### Reply 2:
Thanks for the nice feedback!The firmware for Antminer S17/T17 is not fully finalized and integrated with Awesome Miner from a configuration point of view. Right now you will have to use the Antminer web interface to do the overclocking.Please go to the Miner Configuration -> Chain Freq settings, where you can set the following for Antminer T17Select Frequency: 900MHzSelect Voltage: 19.5VIn case of Antminer S17:Select Frequency: 725MHzSelect Voltage: 19.4VIn the near future there will be ""Mining Profiles"" for Antminer S17/T17 where you easily can just select the hashrate you want for all your miners. This concept is currently only available for our S9/L3+ firmware.Please note that when running the Awesome Miner firmware for Antminer S17/T17, you don't need any Awesome Miner license. As the firmware has a mining fee, we don't charge anything extra for using the miners with Awesome Miner.Please let me know if you have any questions.

### Reply 3:
Hello!! is this still working ? tried to unlock but failed didnt went trought send custom web requestand API acess shows for me restricted no operation allowed.Any help please ?I am new in this mining thing.Thanky you.

### Reply 4:
Please let me know which Antminer you are running and also which firmware version you had before. Thanks!

### Reply 5:
Hi,This feature is available for everyone - you don't have to run a paid version of Awesome Miner to unlock any number of Antminers. This should benefit the entire mining community.I've received a number of questions about what Awesome Miner, as a trusted and known software solution, can do related to unlocking of Antminers (without having to use SD cards). The unlock feature has been available in Awesome Miner for a while, but everyone may not be aware of it as it's a bit hidden.Unlock supportS15, T15, S17, S17 Pro, T17Enable SSH and remove signature checkWorks with recent Bitmain firmware versions, except the latest December 2019 releaseS9, T9+Remove signature checkWhen the signature check is removed, you can install any firmware, either custom firmware or older Bitmain firmware, where SSH is availableWorks with all Bitmain firmware versions except the most recent from July 2019. If you run this specific firmware version, flashing with SD-card is an option.How to unlockIf you already are running Awesome Miner to monitor all your Antminers, please make sure you run a recent version and then proceed to step #7.1 ) Download, install and run Awesome Miner. <link> ) When running Aweso<rest of post truncated>

### Reply 6:
Sir,It seems a very good software to use in minning field.And i have some questions below:1, You can unlock the miners such as S17, T17 and enable the SSH funtcion without SD card?2, When my miners are hosted in the farm, in the lan. May i direcelty access them in the internet just as in the same lan?Thanks a lot!

### Reply 7:
Haha, looks like that WAS the way to go.Got a 50TH S17 to a stable 66TH. Even with the 3% fee, that's almost 30% increase!!! Amazing.

### Reply 8:
Thanks for your questions.1) Most S17 and T17 miners can be unlocked without an SD card. It's only the very latest Bitmain firmware from December/January that requires an SD-card for unlocking.2) Awesome Miner needs to be able to establish a connection to the miners in order to manage and monitor them. Either the miners needs to be on the same network or you need to have some kind of VPN solution to connect to the miners.In the future we are also planning to support an alternative way of communicating with miners on remote locations, to better support hosted environments.This sounds great - thanks for the nice feedback.I did see your PM related to how to make these settings, but it looks like you worked it out fine. There will soon be improvements to the S17/T17 firmware as well where you get auto tune and more. Later on there will also be predefined settings like 65TH/s or 70TH/s where you no longer have to modify the frequency and voltage manually to reach a certain hashrate.

### Reply 9:
im using your latest firmware on my T17 but i cant unlocktried many times and also with putty no SSH possible

### Reply 10:
Hey patrike is this still works? Mine running july 2019 firmware on T9+.. where to get the sd card images..

### Reply 11:
If you have the Awesome Miner Antminer firmware installed already, the miner isn't locked and there is no need to unlock it.You can enable SSH in two ways:1) Via Awesome Miner toolbar: Tools -> ASIC Tools -> Set Mining Profile. Go to the Additional Settings tab and check SSH. (It<rest of thread truncated>
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23598,"Date: 2021-06
Topic: how do i set up a bitcoin miner?
### Original post:
ive tried several of them from google and none of them work can i get some help setting them up please?

### Reply 1:
""From google""? Whatchoo talkin' about Willis?Bitcoin miners are hardware. You might want to refer to this link for 1st time miners which by the way if you had bothered to look is pinned at the top of where you posted...

### Reply 2:
if a buy a bitcoin miner like this in the link <link> it be pre setup to mine?

### Reply 3:
If you use the title as your keyword in Google then it will lead you to a guide for building mining rig or GPU miner it's not actually a miner for Bitcoin they are mining altcoin but paid out in BTC. If you want to mine Bitcoin you will need ASIC machines that support SHA256 algo if you don't have ASIC machines then you can't able to mine bitcoin even you have a super computer.Check this list of ASIC machines below it includes profitability and only check the SHA256 algo miner.- <link> miner is easy to set up just put your pool and ready to mine and if you directly bought a ASIC machines from manufacturer they will also include the documentation and guide on how to use the miner.

### Reply 4:
Did you even read that 1st time miners link?That amazon ad is another scam: It is used, very old gear from several years ago, way over priced, no PSU, <truncated> info in the ad...

### Reply 5:
Even if it is, which I doubt, do you really want to run a pre-set miner? Where would you get your mining reward?

### Reply 6:
Just so we don't go with interpretation of what ""set-up"" means, and judging by the OP, it's pretty clear he means some installation of a certain software/firmware, which in that case, you are wrong because all miners today are indeed pre-set.The asic miner in the link you posted is T9+ by bitmain, yes it comes ready to mine, all you have to do is fill these 3 fields The password is usually just ""x"" for most pools, the URL is something that the mining pool you join will give you, and the worker name is something you set in your pool account, pretty straightforward and takes no more than 2-3 mins to get it up and running.With that being said, 1.2k for antminer T9+ is way too much, this gear is now worth about $200 or less in China including a PSU, so the max you should pay for it should be below $300, it's not effienct and if your power rate is above 2-3 cents you won't be making any profit, and it runs pretty hot as well, but it's a good learning object if you just want to start with it, however, do not expect to become rich mining with that old gear.

### Reply 7:
It will be, and it will also be configured to mine to the wallet of someone else.The pool setup will not be blank, it will have someone else's mining information in it.So if you even just turn it on, it will start mining for someone else.You must at least change the pool setup page to your mining account on the pool you wish to mine on.Also if it doesn't have original firmware in it, it will always mine some % of the time to someone else even after you change the pool settings.Thus it is also highly advisable to reflash the firmware to original, since many people put firmware in miners that takes some or all of your mining, no matter what you set in the pool setup page.

### Reply 8:
Wrong, since the lawsuit against Bitmain in 2018 all of their miners today (and most other miners) come blank and the miner won't start mining until you enter your pool and worker details.

### Reply 9:
braiins for instance points to slush but with a dead worker it is designed to not mine.if it is blank it wont load so it uses something like this is a dead workerso the miner fires up and no hashes are sent to slush. until you put in a real worker.or change to a different pool with a correct setup.

### Reply 10:
He's not buying a new miner, so I'm correct.

### Reply 11:
Worse is that since they are asking such a question while looking at used miners, they will be absolutely clueless about re-flashing the miner to be sure it does not have malware installed on it. Given that, who knows where & who it would be preset to mine at & for.

### Reply 12:
You are still wrong, most used miners come blank as well ( most sellers don't want to reveal their pool and worker details), so the chances of whatever you are claiming to happen are slim to nothing.

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23490,"Date: 2021-03
Topic: Anyone willing to help a newbie? I can't get my S9 working
### Original post:
You should post the kernel log (using the code like so)Code:kernel goes hereA screenshot of both the main page as well as the miner status page would help as well, do so after disconnecting one hashboard as phill explained, unplugged the 3 6pin connectors alone will do.

### Reply 1:
I finally found an old S9j I decided to use for solo mining as a lottery. I've set the thing up in my garage but can't get it to hash. None of the online tutorials are that helpful because they consist of ""do this step"" without explaining how or making the assumption that the step will be successful. I have no clue where I even went wrong on this.I have an APW3++ power source using a 110V standard us outlet. I have successfully hooked it up to the ethernet and can access the configuration settings.Actual GH is reporting as 0 after 2 hours. I am using CK's solo pool and my miner doesn't register as an active user on that network.Network settings: DHCP protocol. I found something on bitmain's site about changing this to static. Do I need to do this? What are the gateway and DNS server fields then?Pool settings: I have URL set to <truncated> and worker as my BTC wallet address.Firmware is updated to most recent on bitmain's page.Asic status has 0s for all the chips. Fans are both working and unit is not overheating.Anyone able to assist? I'm not even sure how to troubleshoot it at this point.

### Reply 2:
okay first off detach 1 board.there are 3 boards on 110 volt your psu will only run 2 boards .each board has 3 jacks for the awp3++. so pull the 3 from one board.get back to us. after you do thatand repeat that for all 3 pool entries .pool = <truncated> = your btc addypassword = xthis should work. and give you about 8-9 th.

### Reply 3:
PSU needs 220VAC for full 1600W output. At 110VAC the PSU is only rated for 1200W which won't run an S9 reliably since it wants at least 1400W. Unless you're <truncated> which is a whole other discussion!

### Reply 4:
The APW7 puts a decent 1.8KW at 230-240v, so the max you can achieve on a 110v would be under the 900w mark which is not enough to run 3 hashboards at least not on the default settings.I don't see why not, as long as every hashboard is connected to just one PSU, so every 3 6pin going into a hashboards are from the same power source, and I assume you will need to power the PSU that does not power the control board first.

### Reply 5:
Philipma - that fixed it! Thank you so much.Is there any way to run all three boards from a standard US 110V outlet? I feel like if I'm only getting 9 TH I should have bought a cheaper unit... Is there any use to getting an apw7 psu?I think I spoke too soon... I mine for about 2-3 minutes, then the miner gets an error. There is a solid red fault light, which isn't covered in troubleshooting on bitmain's website that I can find. Rebooting doesn't seem to help.Here is the kernel:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reser<rest of post truncated>

### Reply 6:
Sorry - clarification: do you mean that all three hashboards must run off 1 psu, or that each hashboard separately must have at least one PSU? (meaning, I can't use two PSUs on a single board, which is what I think you meant...)I guess from a simpler standpoint: I have two boards functioning now. If I get a second PSU and connect it to the third board via a separate outlet, that could power the third board and get all three hashing without needing a 220v outlet, correct?

### Reply 7:
Correct. The key point is that you should NEVER connect more than 1 PSU to a hash board. The power supplies will fight each other and eventually 1 will fail or worse yet you may burn the PCIe connectors.

### Reply 8:
Sorry for causing confusion, I tried to be detailed ended up making things a bit hard to understand, but you kind of got it anyways, to put this in even a simpler form, just plug the second PSU into an outlet, take 3*6pin cables and plug them in the 3rd board which now is unplugged.You could also connect the control board to the second PSU instead of connecting it to the first one since the second PSU will have a lot more room, the control board doesn't consume much but still worth it IMO.

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11772,"Date: 2012-02
Topic: new DiaKGCN kernel for Phoenix miner (7970 / GCN) - 2012-02-03
### Original post:
download current version:<link> release fixes the bugged VECTORS4 code, which works again (tested on 7970 and 6550D) and could speedup things for VLIW4 / VLIW5 GPUs with WORKSIZE=128, just try it. There are no further changes for GCN in conjunction with VECTORS2 since 03-02-2012.Dia

### Reply 1:
More <truncated> VECTORS WORKSIZE=128: 247MHpsDiakGCN VECTORS2 WORKSIZE=128: 280-281MHpsDiakGCN VECTORS4 WORKSIZE=128: 284MHps....It looks like your old Phoenix kernal is finally beaten for me. Now just need to surpass my cgminer scores of 290MHps xDCPU at 25-30% on my C2D.Increases all across the board. Congratz!

### Reply 2:
Just tried your newer kernel and just about crapped myself. I'm seeing some very competitive numbers with phatk2 now and I love the verbosity. I see you decided to move the (u) values from the bitselect. Did that help to speed things along? I figured that if BFI_INT didn't have them, there was a major difference in something and one of them had to be slower.I like how you used the global offset to your advantage. (GOFFSET)I am impressed. You've been busy and I can see why. If I was capable of hashing faster, I would totally send you some coin for your efforts. Given a few months, I should.

### Reply 3:
Also, if I may, it doesn't look like uu needs to be set for GOFFSET as base doesn't appear to even be used. I'm guessing that was your intention in the first place.

### Reply 4:
I get ~10Mhash/s more on my 5870 using:Code:VECTORS4 AGGRESSION=6 WORKSIZE=128 BFI_INT FASTLOOPwith this kernel for regular desktop usage.Compared to my old phatk2 line:Code:VECTORS AGGRESSION=6 WORKSIZE=128 BFI_INT FASTLOOPThough, this kernel doesn't seem to help my <truncated> card(also a 5870) in my crossfire setup compared to your 2011-12-21 phatk_dia.

### Reply 5:
What did you get apples to apples? As in using VECTORS4 with phatk2?

### Reply 6:
Oh, crap, significantly more. Guess I should've tried phatk2 with VECTORS4 before...Edit: Blah, ignore above postings. I've been editing the kernel files.

### Reply 7:
Would you mind to try the VECTORS8 version and report back?Dia

### Reply 8:
I'm using Catalyst 12.1, 875/1225 clocks, same manufacturer/model 5870s on Windows 7.<link> <truncated> FASTLOOP=false AGGRESSION=10 WORKSIZE=128 BFI_INTMax: <truncated> AGGRESSION=6 WORKSIZE=128 BFI_INT FASTLOOPMax: ~390Mhas/sYour new diakcgn <truncated> FASTLOOP=false AGGRESSION=10 WORKSIZE=128 BFI_INTMax: <truncated> AGGRESSION=6 WORKSIZE=128 BFI_INT FASTLOOPMax: ~352Mhash/s

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    ""hardware_name"": ""C2D"",
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21812,"Date: 2017-11
Topic: Proposed power setup for S9 and APW3++
### Original post:
Ok, I have been looking at specs and others posts on here, and want to run this setup by some of you with expertise, please.I have a 30amp 240V unused breaker in my panel. I am considering pulling it and replacing it with a 20amp 240v breaker to run the <truncated> Outlet Box: <link> Outlets: <link> <link> a #12 2-conductor with ground wire cable to the breaker. These outlets are rated for 15amp 250V each, the wire should be good for near about 3800w, and the 20amp breaker should be fine (1400w x 2 = 2800w / 240 = 11.67amp + 10% = 12.8amp). So, the wire should be good to trip the breaker before getting too hot, the breaker should not trip with 12.8amp draw, the outlets and faceplate should match.... Right?If I were to use the 30amp breaker that is there and add a 3rd outlet - I would then need to go to #10 wire - right? How about a 4th outlet? It seems like the breaker would handle that, the outlet would be good, but the wire?Then, each outlet to the psu with this: <link> - again, rated for 15amp/250v - so good - yes?Thanks for your input and advice!

### Reply 1:
Anyone? I'm gonna start wiring this up this weekend - I have #12 wire - but if I go with running this with 3 or 4 outlets on 30amp breaker, will #10 wire do it? I'm thinking it should be good for 3 outlets - but 4?First S9 will be here, and hopefully up and running, this coming Tuesday!Thanks!

### Reply 2:
I would look into getting a 2 pole 20amp breaker. Then wire it up to a L6-30 Outlet Depending on your voltage you will get anywhere from 5-5.7kw

### Reply 3:
Very close, but you want everything rated the same that way devices such as breakers can do their job and trip if needed and outlets can do their job and handle the amps that go by the breaker. You should consider using the existing 2 pole 30 amp breaker and then use the l6-30 outlet. Then go on ebay and buy a used PDU, make sure it is rated for 240 volts and 24 amps.<link> the outlet ratings on this PDU you should be able to run 3 S9's with the numbers you provided. but they would each need to be on their own PSU because the PDU outlets can only handle 12 amps and that would be close.Good luck

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24081,"Date: 2023-02
Topic: Avalon 1246: All 3 boards are stuck in an idle state ECHU[1 1 1]
### Original post:
Hi I have a lot of avalon 1246 miners, i purchased them second hand a quite a few have these errors. I can't get them out of the idle state despite updating firmware, factory resetting, changing power supply and control board. I even swapped out the middle hashboard as I though that was down. Anyone have any idea what to <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':2,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1490416.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 1 ] Elapsed[38] <truncated> LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[25] TMax[25] TAvg[25] Fan1[5459] Fan2[5493] Fan3[5420] Fan4[5437] FanR[74%] Vo[337] PS[0 1201 1349 103 1390 1350 1569] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[120] Core[A3201] PING[0] POWS[0] HASHS[0 1 0] POOLS[0<rest of post truncated>

### Reply 1:
ive done the exact same things and have the exact same problem and 0 answers. im assuming its a firmware problem. i didnt have issues until i lost a hashboard than i flashed new firmware than i used serial to downgrade firmware. im tried every firmware miner has been sitting for 12 months. ive contacted canaan many times with no resolution other than a long process of mailing in a hashboard to them.my issue is also middle hashboard and when i swap it around the 0 1 0 will change to wherever that hashboard is. there is numbers on the boards 2 are identical and 1 is higher im assuming to balance the hashpower that board must be the highest bin.

### Reply 2:
Are you ever tried to check the middle cables or connection or terminals of the middle hash board there might be a connection problem. Try to replace and clean up the terminals of the middle hash board using lacquer flo thinner or any board cleaner.Then update here but if you have a multimeter check the wire cables and terminal for short circuits and lost connection.

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16739,"Date: 2011-06
Topic: 4G limitation when installing Ubuntu on USB key
### Original post:
I installed Ubuntu 11.04 on a 8G USB key on my rig. This is working great. Looks like there is a limitation to the size of the partition to 4G. I desinstalled libre office, java and other stuff I don't need on the machine but I have only about 200M of space left on the device. I also created another 3G partition to install the AMD SDK and mining stuff but I'm still running out of space on this 4G partition.How do you cope with the 4G limitation ? Did you install the regular Ubuntu distribution ?thanks

### Reply 1:
<link>

### Reply 2:
I have linuxcoin running on a 1GB drive. More than enough room.

### Reply 3:
There is no 4GB limit in Ubuntu. Maybe you are using a FAT file system which has a 4GB limit but you don't need to use FAT on a flash stick. I've used ext4 for ages on my boot flash on my router. No problems at all.

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    ""hardware_name"": ""boot flash"",
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    ""hardware_name"": ""router"",
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20605,"Date: 2015-09
Topic: Rockminer R-BOX/OverClock Help ?
### Original post:
Its the small round model, I'm using Minepeon, Is there a safe limit to overclock it to and all so How fo I do it ?

### Reply 1:
Are you talking about the 30Ghs model? I run mine with a clock of 290, i seems like these units are full of hardware errors. Right now in BGMiner 5.0.0 I have one running for 3 days and it's has 41,750 accepted, 880 rejected and 39,428 hardware errors.It runs at 34.5Ghs and about 43.0C.

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    ""hardware_name"": ""Minepeon"",
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  },
  {
    ""hardware_name"": ""BGMiner 5.0.0"",
    ""hardware_is_owned"": true
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]"
16353,"Date: 2022-10
Topic: Backpack Bitcoin Mining Machine
### Original post:
Backpack Bag Bitcoin Mining Machine is a device that is used to mine bitcoin at anywhere at anytime. It is hanged like a normal school bag. I may say, it is a mobile machine for mining whenever location the miner found him or herself. Really, I have not seen such in my life before but when I saw it on instagram I was amused and I asked a friend who is conversant with bitcoin to explain it for me and I also made some study in it. But in the internet source I did not see this particular one but real laptop bag for backpack mining.I really love this new technology for mining bitcoin with less energy.

### Reply 1:
So ya want to lug around a 20kg battery to be able to mine for what, maybe 15min at best?Ya would work with some USB sticks but any miner pulling over 100w or so is a definite no-go...

### Reply 2:
It doesn't use less energy; these are box-standard miners taped to a backpack.. That should be obvious to anyone.Why would you even create a new topic just because you found a funny picture online?

### Reply 3:
I'm sure this image is edited or someone just created it for fun because no one can withstand lifting a mining machine and battery for 24hrs. And I'm sure this is not profitable you are just going to waste your money with this bag pack. It would be better if it's a USB stick miner like NotFuzzyWarm said above the weight of a USB stick is around 0.05kg, unlike a mining machine like s9 with a weight of around 5 to 6kg plus the battery weight which is heavy I can't endure bringing them anywhere. If you want a lightweight USB stick, raspi, and portable power bank would be enough to bring them anywhere without getting tired.

### Reply 4:
it will be a new costume for halloween

### Reply 5:
Some technologies do not have any relevance, why would you want to walk around with a bag pack that mines bitcoin? have you not considered the security risk involved first and secondly health challenge this can present, you will be making yourself a walking target for muggers and a candidate for early back and waist pain.The idea is good but in application, it is not making sense.

### Reply 6:
The guy was actually walking around the conference with this running on his back.

### Reply 7:
I'd rather keep these machines somewhere safe and cool.

### Reply 8:
Hm, and I was almost writing that it must be fake.Did he turned it on? Was it noisy?However, as others said, it's not really a good use case because of the weight and because it may not mine for long enough, since the consumption is probably big.

### Reply 9:
<link> was done by Braiins (Slushpool) and while it did work, it was really done as a gimmick.

### Reply 10:
Yes, it's good for the presentation, but it would be more fun if he rolled a cart with a generator of sufficient power to power his equipment, I wonder how much it would be enough, but it's not bad for fitness either.

### Reply 11:
Imagine rocking up to Starbucks with this like; Hey! You got a 5amp breaker plug near a window here? Troll aside, looks sick but damn, my chiropractor would steal my gains.

","[
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  {
    ""hardware_name"": ""USB sticks"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""box-standard miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB stick miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining machine like s9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""raspi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""portable power bank"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""generator"",
    ""hardware_is_owned"": false
  }
]"
4228,"Date: 2012-11
Topic: Algorithmically placed FPGA miner: 255MH/s/chip and still rising
### Original post:
If this were anything other than pure FUD, someone would have claimed the bounty by now.

",[]
22188,"Date: 2018-01
Topic: APW3++ Power cord
### Original post:
I have one of these psu coming. What is the plug style on the psu that I need for the incoming power cord? Is it C13? Or C19?

### Reply 1:
Yes, you need the C13 connector at the psu end.<link>

### Reply 2:
Also watch out for the cable gauge/rated amps, it will get really hot otherwise (dangerous, wastes energy, kittens die).

### Reply 3:
Ok thats what I was thinking. Thanks. Ill make sure I get a 20 amp min rating. My plug and breaker are 20 amp.

### Reply 4:
I bought this:<link>

### Reply 5:
Im not using a pdu so I need it with a 6-20 plug on the other end.

### Reply 6:
This is what you are looking for. They have a couple styles like this. <link>

","[
  {
    ""hardware_name"": ""APW3++ Power Supply Unit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""C13 connector"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cable gauge/rated amps"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""20 amp min rating cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6-20 plug"",
    ""hardware_is_owned"": true
  }
]"
14146,"Date: 2011-06
Topic: Doing the sums, what's a good way to model difficulty?
### Original post:
I'm currently doing the numbers for how many Bitcoins I can crunch, and struggling to work out expected increases in difficulty, and how long they're going to last.Can anyone tell me how they're modelling difficulty? Right now I'm using one change every two weeks, by 20% each change.

### Reply 1:
i do every week by a 90 percent increase

### Reply 2:
+40% every 10 days is what I use for rough estimates...I need to do a more proper model though I think.

### Reply 3:
+60% ever 10 days has been a rough figure to work by for a long time.

",[]
13613,"Date: 2019-04
Topic: Antminer S9 Firmware ASICBOOST original hacked , no dev fee hidden
### Original post:
You can't do some of those changes without changing the code.Cleary a scam/hack - stay away from this everyone!

### Reply 1:
I understand your reaction, but look at my post I am not a noobie here;) to prove my good time I can give you a copy;)

### Reply 2:
No one in their right mind would run a hack firmware that the hacker claims there's no need for source code ... and the functional claims require changes to the source code.... and you want money for it ...

### Reply 3:
I understand ... but you do not know my skills ... I use flaws! if you master ssh, I can give you the files of my firmware, and you keep your BMMINER, all other file on my firmware is ""text file"" and all is clear you see.... and you will see ...

### Reply 4:
Helloi will test it on a s9 (btc.com pool) and report. I would not copy or sell but i think some people here needs the answer can we trust the original firmware of bitmain? the past has shown that we can not even with the manufacturer - see antbleed!zwilla has found antbleed and other shit on bitmain firmware on some other miners like L3+, D3 etc.maybe you can kano provide the firmware for testing?the big problem is again and again GPLv3 but if originalfirmware is used without the data of bitmain to change and just add more then yes the injury remains at bitmain or? and bitmain is not interested in GPLv3 - see all other miners ....

### Reply 5:
Hi, totally agree with all this affirmation! the community needs to find that I am not a scamer! and I assure you that my firmware is really in focus ... I know, like all the others would tell you, and you're right lol, but mine has the distinction of being strictly an original firmware, on which I 'calls the functions via some command;) but the software itself is in no way change, and therefore nothing hidden;)You can have popularity here, and therefore can credibility, in all friendly wellssure! I do not criticize you! I can offer you the single payment of 0.005btc, and once your detailed return to the community I will refund you;)

### Reply 6:
Zwilla was a scammer who pretended he made the miner hash faster by using Fourier transforms ... i.e. confuse people with fake information.He had a run of luck on my pool then claimed that the miners were lucky due to this bullshit.Aside: His overall luck mining on my pool was below 100%The code in the BM miners to shut them down was something I'd asked about long ago.It was there for their datacentres and as far as I see it didn't actually work.They removed it anyway about a year later when it got some traction from people complaining about it but not knowing anything about coding.However, of course, I'm certainly anti BM - they have yet again released new miners that break the licence agreement of cgminer.bmminer is just a modified cgminer

### Reply 7:
I am willing to take a vouch copy , I do not have a particular use for any custom firmware, don't really care about power consumption since my power is free, but i am willing to make a review on your ""modified"" firmware. pm me if you are interested.

### Reply 8:
Hi , You ready to try it !!! ? i sell you for free, only 3 files for proof is possible to modifi all spec without source ! i don't agree to critic without test i'm not a scamer !!! on hold time i'm help comunoty here Thanks ! Amicaly

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""D3"",
    ""hardware_is_owned"": false
  }
]"
20311,"Date: 2015-03
Topic: Remote web access to a miner
### Original post:
I am wondering if someone can point me to the appropriate resources to get more info.Is there a way to access miners via the web remotely?The reason I'm asking, is that I have access (via family connections) to an industrial facility with very cheap power because it is located adjacent to a local power plant. However the facility is very far form me - on the other continent. So I don't want to travel there more than I have to.Secondly, my friend wants to do it too. Ideally, I would want him to have access to his own miners.Thanks

### Reply 1:
yes, there are several ways.id be tempted to use a raspberry pi, have it one the same network as the miners and run openVPN on it.from your home machine you can then connect the VPN and browse each miners web interface as if you were plugged into the same local network.

### Reply 2:
Hard to explain in forums because difficulty...i think you really have to search the web and you need to get into this...Openvpn is sure safest way! You can also try services like dyndns.org with <truncated> but not as safe<link> fun

### Reply 3:
Thanks for the replies guys.Based on the advice, I am reading this guide right now:<link>

### Reply 4:
MinePeon allows you to setup a Raspberry Pi as a host for mining hardware.You can also access it using a browser using a local ip address.<link>

### Reply 5:
I use Team Viewer and it works great. You need to leave your computer on while away and if your afraid of power outages then use a laptop so the battery will give a couple hours of backup for short outages. But I used to even reboot my computers with Team Viewer and it worked great.

### Reply 6:
TeamViewer is a great product for this. With it even if your IP changes your login can get to your house computer. Once logging in it would be like you are home and can access your miners on the network.

### Reply 7:
If you decide to go the TeamViewer route I'd set a strong password to connect though. I've heard of people using the default 4-5 character password who've had their machines hacked into and coins stolen, if they keep crypto-coins on their PC unencrypted. I'd personally go the VPN route, for me it would be easier to manage my machines on my phone through the internet browser than through a TeamViewer app.

### Reply 8:
You brought up something I forgot to mention. As a general rule don't keep a wallet on the computer with remote access. Have it to log into miners, but don't keep <truncated> documents on it.

### Reply 9:
Maybe a silly question but...does this facility have internet connection? If yes, VPN would be a great choice. If you're not sure how to use it you can grab software like TeamViewer, it's very easy to install and use. Use a strong password as already recommended.

### Reply 10:
Depending on how technical you are would make a choice to. TeamViewer takes really no skills to use/install.If you do VPN make sure you have a static IP.

","[
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    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
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23414,"Date: 2021-01
Topic: Reputable S15 PSU Repair or Advice
### Original post:
We have 300 of the APW8_16.32V-20.04V PSU's that are dead, and Bitmain isn't selling them anymore. 30% of our S15 PSU's have died (or reboot after a few seconds) which seems extremely high compared to our other miners.Does anyone have experience fixing the most common issues with S15 PSU's? We don't have the experience on site to do more advanced repairs. Or has anyone worked with a reputable repair shop I should reach out to.Thanks for any help

### Reply 1:
You should learn basic electronics first if you are going to repair PSU.You can try to buy on Amazon or Aliexpress the only problem ordering PSU on both Amazon and Aliexpress is a bit expensive compared to Chinese shops on Alibaba.Look at this on Alibaba- <link> if you still looking for a repair shop I think, try to contact zeusBTC maybe they are near your area.- <link>

### Reply 2:
Have you tried to clean those PSUs? a very common problem is that the PSU gets hot and shutdown.If the other miners are S9s or the like then it isn't a fair comparison, the APW8 is very sensitive to voltage while APW3 and APW7 are not, so this could all be caused by the wrong voltage input you feeding them with.Where are you located? check this topic out.

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    ""hardware_is_owned"": true
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    ""hardware_name"": ""S15 PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW7"",
    ""hardware_is_owned"": false
  }
]"
21210,"Date: 2016-12
Topic: Avalon 6 error code 517
### Original post:
I can't fix this problem, does anyone know what kind of problem is? Something about the fan according avalon6 wikipedia error codes....but i see the fan working, but the miner led red.

### Reply 1:
517 is a combination of three error codescode 1 - idlecode 4 - loop 0 failcode 512 - no fanThe fan error means that the unit cannot sense the control line the fan (this wire is how the unit adjusts the fan speed). The fan will just be spinning at maximum but the unit will not hash in this state. I would recommend completely powering down the unit, unplug the fan, then wrap a small piece of tape around the connector before plugging it back in. The plugs are not always snug and just the slightest movement from vibrations can send the unit into the 512 state. The loop 0 error is saying that one of your hashing boards is in a failure state. This can be a false reading due to the fan error. Once the fan has been taken care of you should power the unit up and and see if the error code is gone. Some other issues can cause a false positive with the board failure codes. If you get an error code 4 after doing this it means the board on the right side of the unit (looking at the unit from the PCIE power plug side) has failed. If you are still under warranty I would call immediately to get a replacement.

### Reply 2:
how about error code 1028?Seems to be hashing on one board or atleast 1500-2000 ghs

### Reply 3:
1028 is two codes.loop0fail: there is a failure in the hashing board itselfpga0fail: this is a power failure...either something in the power stage of the board went bad or you are not supplying the board with the proper amount of power. (this power issue will cause the loop fail error code as well since the board cant power up to actually proceed with the POST)

### Reply 4:
Where do you get the error code? I mean, does Avalon 6 show error codes on a display somewhere?

### Reply 5:
<link>

### Reply 6:
plugged psu into bad board only get this error code 264233.when 2 boards plugged into psu then error code 2056bad board only plugged ininput voltage reads 12.3pg = 1error = 264233red light blinkingno green lights on board

","[
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    ""hardware_name"": ""Avalon 6"",
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  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCIE power plug"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  }
]"
20484,"Date: 2015-06
Topic: KNC NEPTUNE PSU
### Original post:
I HAVE THREE CORSAIR 750 PSUs WILL THESE BE ENOUGH TO RUN 5 CUBES ?. AS I UNDERSTAND IT THEY ARE PULLING 300W EACH ?

","[
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    ""hardware_name"": ""CORSAIR 750 PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CUBES"",
    ""hardware_is_owned"": false
  }
]"
24018,"Date: 2022-09
Topic: bfgminer - Bitmain Antminer U2 & Raspberry Pi Model 3 B+ - solo mining setup
### Original post:
***bfgminer - Bitmain Antminer U2 & Raspberry Pi Model 3 B+ - solo mining setup****using Raspberry Pi Model 3 B+*using Bitmain Antminer U2*using Raspberry Pi OS Lite (64 bit)*using <truncated> bfgminer*NOTE: Instead of 'BITCOIN_ADDRESS' insert your own Bitcoin Address.*Go to the main directory:cd*Update the Raspberry Pi:sudo apt-get updatesudo apt-get upgrade*Install dependencies:sudo apt-get install git build-essential autoconf automake libtool libgcrypt20-dev pkg-config libcurl4-gnutls-dev libjansson-dev uthash-dev libncurses5-dev libudev-dev libusb-1.0-0-dev libusb-1.0-0 libevent-dev libmicro<link> libhidapi-dev*Clone bfgminer:git clone <link> and compile bfgminer:cd bfgminersudo ./autogen.shsudo ./configuresudo make*Start bfgminer (while in 'bfgminer' directory):sudo ./bfgminer -o <truncated> -u BITCOIN_ADDRESS -p btc -S all**Autostart bfgminer in a screen session when Raspberry Pi is powered on - optional***Go to the main <truncated> screen:sudo apt-get install screen*Open this file:sudo nano /etc/rc.local*Add this just above 'exit 0':cd <truncated> screen -dmS bfg ./bfgminer -o <truncated> -u BITCOIN_ADDRESS -p btc -S all*Exit with 'CTRL X' and confirm changes by pressing 'Y'<rest of post truncated>

### Reply 1:
!!! Important Addition !!!Due to changes at GitHub a few lines of code need to be changed:After ""git clone <link> type in ""cd bfgminer"".Then type in ""sudo nano .gitmodules"". In this file you have to replace every ""git://"" with ""<link> and save the file (Exit with CTRL X and confirm changes by pressing Y and pressing Enter).Afterwards continue the tutorial at ""sudo ./autogen.sh"" as normal and everything should work.

","[
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    ""hardware_name"": ""Raspberry Pi Model 3 B+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain Antminer U2"",
    ""hardware_is_owned"": true
  }
]"
3922,"Date: 2016-03
Topic: [Group Buy] AntRouter R1 - .185 BTC - In stock - Custom Firmware! Cheap Shipping
### Original post:
Looks like I have more day of dreaming of the R1 and your mod. USPS decided to take a extra day (no fault of crazyguy) looks like they decided not scan it in this morning hopefully tomorrow.... i don't think my mailman took that rain sleet or snow oath .But this custom firmware looks amazing. Truly great to see all the add-ons. It added all the big things I was hoping for and more. To be able to set different pool was my main thing, easy to change speed sounds even more amazing.

### Reply 1:
I'll be in for 1, check pm's on how to get USPS label to you.Will your firmware be available for download to use at our own risk, or only by having you flash before shipping, and any updates to us later? Does that make sense?

### Reply 2:
Can anyone make these mine through a wifi connection only not needing the RJ45 connection.

### Reply 3:
ANTMiner R1 Wifi Router - .185 BTC Status: Open - In StockPayment Address: <truncated> have a small batch of AntRouter R1 units I'm offering for group purchase. Buyer provides shipping label or shipping payment. Weight is 7 oz and can fit in a first class padded envelope for $2-$3. Source shipping zip code is 75013Custom Firmware!Custom firmware can be loaded upon request. However, please note that loading custom firmware will void all warranties. Custom firmware includes: - Configuration for up to 4 pools with full Bitmain solo mining support. - R1 Frequency and Voltage modulation (Use at your own risk)- Detailed R1 stats page, including pool statisticsI will never solicit you via PM for payment, watch out for scammers!

### Reply 4:
Hello mate, great job there! Is it possible to purchase the firmware from you with some instructions how to load it on my R1?Thank you and keep up the good work!

### Reply 5:
You can donate to my profile address if you like.<link>

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    ""hardware_name"": ""USPS label"",
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  },
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    ""hardware_name"": ""AntRouter R1"",
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]"
14483,"Date: 2011-10
Topic: Good Bye Mining, See you at 10$ and Amd 7000
### Original post:
Closed out my last rig today, ended up profitabe with some great memories so net win =)Final numbers are 440 BTC profit, had 5.2 ghash with 5000 invested.

### Reply 1:
Time to fix your siggy then!

### Reply 2:
I need the ""I mined at deepbit.net""

### Reply 3:
Good for you. Still trying to sell my remaining 5830s but apparently they're not that hot now...

### Reply 4:
Probably asking too much or maybe people are catching on to how ineffiecient they are vs almost anh other card.I bet for 80$/ea you could sell them fast

### Reply 5:
See you then, thanks for the cards, anticipating their arrival soon

### Reply 6:
Oh im not leaving bitcoins, just mining, invested all of that paypal money back into BTC

### Reply 7:
I anticipated the current dip and got out of mining a couple of months back (& managed to sell my equipment for virtually the same price that I paid for it) . I feel your sadness. Hitting the power button for the final time was quite an emotional moment.I believe that new hardware opportunities in the future along with a potential bounce in bitcoin value will see us all mining once again.

### Reply 8:
That's how I have made most of my money with cryptocurrency; buy and sell. I haven't mined BTC in many weeks. My miners are currently gathering the other cryptocurrencies, speculating that sometime in the future, they will rise to a value I'd be happy to sell at. Total gamble, but hey, no risk, no reward

### Reply 9:
Nice to see someone in the green with bitcoin mining and hope to see you soon! Sure hope bitcoin will be $10 soon enough

### Reply 10:
As soon as the 7000's Actually ""hit the market"" It's gonna be SOOO hard to sell a 6990...Anyone wanna buy a 6990 when the 7000series comes out? Lemme know.I plan to sell my MSI6990 <truncated> once the 7000's come out, So. When they come out, PM me, And i'll most likely sell you my 6990

### Reply 11:
I mined for about a week on my gaming pc (single 6950) before I realized I wasn't making any money at current prices, at that point I bought $200 worth of bitcoins, exchanged half of them to i0coins, and woke up today to realize that investment lost half its value in less than 24 hours. Fun times, but nothing to do right now except tough it out, leave my money in there, and hope things turn around. Oh, and buy more cheap i0coinsEDIT: I might buy your 6990 for a reasonable price when the 7000s come out. I am more interested in gaming than mining, and for that it will be fine.

### Reply 12:
lol forks...what were you expecting

### Reply 13:
Indeed, and my target market is majority gamers rather than miners

### Reply 14:
Free electricity has made it a lot easier staying with mining BTC.. if it wasnt for that I am sure a lot more people would be joining ya.

### Reply 15:
You are still mining at 560.9mhash at deepbit

### Reply 16:
Unless you have power generating devices, electricity is never free. Someone pays for it somewhere. Just saying

### Reply 17:
I think people need to start qualifying what they are saying, even though for most of us the implication is obvious, free to the miner.

### Reply 18:
I don't know; I think some people mention it as if they get ""free electricity"" due to their own cunning, intelligence, or courage. It's ridiculous when you think about it.Either they live with mom & dad, they're renting, or they happen to be in college.They half imply that they're somehow more awesome because they had enough confidence in themselves to go ahead and call the electric company and insist on being switched to the ""free plan"", which most of us have insufficient manhood to do

### Reply 19:
I can say i have free energy, I bought soloar panels, Then the panels payed themselves off, Now the sun is giving me free energy!Lol yes? no?Aside from that, I feel confident that the only ones mining right now are:People that dont pay thier own elecbillPeople with a large mining FarmPeople who just dont want to hit Off, on their comps for the night, when they could instead hit ON on thier minersHell 15/7 i run at -f250, And at night i swap to -f8

### Reply 20:
Deepbit is less than 20% off of its highs. Are you positive 80% of the mining community fits into your 4 categories?May I present an alternative. My power rate is 4.6 cents/kwhr. My 2x overclocked, undervolted 5830 rig pulls 380 watts from the wall. With all the distribution fees I am at 6 c/kwhr, or 400x24/1000*.06 = 60 cents a day, or $1.80 a bitcoin. Let's call it $20 a month to generate a bit over 8 coins, which are worth $40. This is loosely confirmed by my power bill which is only a hair higher than same time last year (although temperatures differ by 2 degrees).Hardware was paid off after 6-7 days in July, and being 5830s it's not very valuable now. So even $20/month after power costs beats $0, considering it's completely effort free money. If this persists for another 10 months it's another free video card.

#<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""MSI6990"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6950"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""7000 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""soloar panels"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5830 rig"",
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]"
10835,"Date: 2019-08
Topic: Current List of Competitive Hardware - July 2019
### Original post:
You could include Cheetah miner manufacturer, looks very promising and interesting.Not a paid post, you can check out its official website: <link> Beware of scamming site: <truncated> ; Too good to be true boys!

### Reply 1:
$370 for 30THafraid odds are 9 out of 10 this is a scam.sorryIf it is too good to be true, it often is correct, too good to be true.brad

### Reply 2:
I don't know why but they seem very familiar. Did they have less efficient gear before? That would be one reason they never made the list if their offerings weren't competitive at the time. I also withhold putting a company on here until there is some proof of gear and specs. They do have a few pieces that claim really good efficiency with delivery for October based on the site. Did some digging and there was some talk of them a few months back but doesn't seem to be much else. I'll definitely keep an eye on them.

### Reply 3:
Well I'm not giving them an A+ on anything, but looking at their site it looks like 53 TH for 13800 Yaun = ~1960 USD for this gear - 53T ASIC miner Cheetah Miner-F5M with PSUI did reach out to them for information and to ask if they had anyone performing reviews. I do not recommend anyone send them money until gear has been seen and verified by an independent party. Positives are that they are not just blindly accepting payment via the site, but will have a service rep reach out to you. The 30TH model may just be an outlier of a small company that doesn't update their website very well. It should really just say in-stock if it is still available. We'll see if I hear back from them or something materializes in the wild.

### Reply 4:
Again, out of the country, I had an offer of $900 Innsolicon 30TH at 2,200 watts with $50 shipping to the states. Don't help me any with 36.7% tariff and import fees etc. This comes out to $1,307.20 there vs with USA tariffs after September 1st, 2019 or if you are a VAT Tax country..you may be sh*t out of luck on all this.Hosting overseas legit? meh...?I could post the info here and flesh it out some to see if legit. Indeed even pay the guy after I got this $1,307.20 30TH beastie for a review. Not worth the bother. Sorry. Hopefully, this is NOT off-topic in that just showing the difference in prices I'm being offered by individuals on the above Innsolicon. If they make a legit offer of say at 53TH at 3200 watts for say $1,499 I may just cry. I'd still be way out of the running in the USA.Sorry, again, this SHOULD be on-topic just to show what is floating around in the wind for prices, in and out of USA anyway. Stuff that needs to be at the forefront of our miner calcs now the 36.7% frigging tariff.Again, if you really want the contact info to flesh this out in this thread I can put it out there, but without a 'pay when you get it' and a review, I'm not going to. In that does me no <rest of post truncated>

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15874,"Date: 2017-02
Topic: Where else can we use ASIC machines?
### Original post:
ASIC machines are specially manufactured machines for bitcoin mining. What else can we do with these machines. Are there any other areas where we can use these devices?

### Reply 1:
No... If you pick up a really cheap and silent older ASIC, you can use it as a space heater while mining, but that's about the only other thing you can use them for...

### Reply 2:
There are four other recognised uses for ASICs depending on their physical size: Paperweight, book end, door stop and boat anchor.In short, no. They really are that specialised for mining sha256d coins that they can't be used for anything else.

### Reply 3:
ASIC can do just one things...but better than any other processor.the problem of this machine is that when diff goes up, and will come out newest and powerfull miners.. probably like bitMain S10, the value of oldest S9/R4 will fall down really fast...and you must be able to sell it fast to ensure yours ROI...

### Reply 4:
Don't forget the Block Erupter Bottle Opener. Where is that pic?

### Reply 5:
ASICs meant for bitcoin mining are no good for anything except mining SHA2-256^2 <truncated> in general can be used for other things, ASICs have existed since at least 1981.

### Reply 6:
Well if you are an engineer you can actually recycle some components of the asic, to build something elsebut since the chip is not reprogrammable you are stuck with an useless thing

### Reply 7:
Turn it into Broadband Internet Speed Tester maybe

### Reply 8:
Can Antminers be used for Altcoins? If so any examples? I did a quick search and didn't see any with a high network hashrate, so I assume few ppl can be using their Antminers for alts

### Reply 9:
Bitcoin miners can be used for any sha256 coin. That is what the hardware was designed to do. There aren't many sha256 coins because bitcoin miner asic are very prevalent which makes them hard to mine for newbies.

### Reply 10:
Can it be used in image processing systems, for example? Or can it be used to break different passwords?High GPU cards are being used for image processing or password cracking experiments. ASIC machines are more powerful than GPU cards.Can this be used for jobs?

### Reply 11:
You really didn't read the responses? Or do you just not believe us?No, absolutely no. Why is that so hard to understand?

### Reply 12:
ASIC miners are only used for sha256 coins, it's unusable for any other coin, for example you can't mine ether, lite and etc coins with asic miner. At last antminers are usable for bitcoin mining and warming if you want For altcoin mining, you can to use baikal miner or gpus. Gpu is unique for both bitcoin and altcoin mining but not profitable.

### Reply 13:
Of course I read the answers. I wrote in terms of an alternative idea.Maybe we can modify these devices. I do not know.I wrote it to be a brain storm. Maybe we can modify the devices and do something different.

### Reply 14:
ASIC is an acronym for Application Specific Integrated Circuit. The ""Specific Application"" these chips were made for is SHA256 hashing required to mine Bitcoin.This subject has been treated so many times since their inception to Bitcoin that we all, who have been here a while, are quite tired of rehashing the subject.I can appreciate your desire to brainstorm, but if you would do a search you'll find many of these types of threads, some with very technical explanations. So if your were to do that research and then come up with a new/novel idea taking into account what has already been discussed you may get a different reception.Have fun.

### Reply 15:
Then you have a scientist way of thinking because you do strongly believe that those ASIC miners do have another purpose or usage which you could already able to read on most people here that it cant be used on some things but only for mining bitcoin only but if you could able to find one then go back here and tell us Goodluck

### Reply 16:
GPUs just have proper memory architecture for such tasks (image processing), which fits this purpose. ASICs are pretty much like it's said before.

### Reply 17:
This is very informative thread, for me at least. Like the OP I also thought that ASIC machines can be used in some other fields. And now I know that the best second application of ASIC is as a room heater.

### Reply 18:
You answered first and got it right.

### Reply 19:
Think everyone else got it right here, they are designed for mining and mining alone. I think someone mentioned an engineer having the ability to disassemble it and use it for parts but I think that's about as far as you'll be able to get if you're thinking about other uses.

### Reply 20:
Well, if you are living in a very cold area then you could use the ASIC mining hardware to replace a heater. Plus you have the option to get paid Bitcoin or not while doing that. ASIC's could also be used as a motor to power a small toy if you are interested in taking it a little bit<rest of thread truncated>
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    ""hardware_name"": ""older ASIC"",
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  },
  {
    ""hardware_name"": ""bitMain S10"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9/R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Block Erupter Bottle Opener"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminers"",
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  },
  {
    ""hardware_name"": ""GPU cards"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""baikal miner"",
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16814,"Date: 2011-07
Topic: iMac with 6750M
### Original post:
I mine with my iMac using poclbm in Windows. I've overclocked the core clock to 870 MHz and underclocked the memory to 300 MHz. I've also increased the ODD fan speed so that the GPU temp stays stable at around 60 C. It doesn't always run 24/7, I give it a rest now and then. I want to know, is this dangerous for the computer? As in will it's effects start showing soon?

### Reply 1:
From what I know it's a bad idea to mine with an iMac. And iMac does not have good ventilation and you can burn out your card that way. I've heard people doing that. Plus, you are likely just getting <100 Mhash/s, right? Not worth it.

### Reply 2:
The card will burn out even at 60 C? I'm getting ~110 mhash/sec with this config.

### Reply 3:
I don't know many people that mine with an iMac. And I have heard people burning out their cards. Don't know how hot their cards are though. I have an iMac with a 5750. I was getting 77 mhash/s. Once I heard the story of someone's iMac dying, I stopped mining on mine. Not worth it... so I just got a dedicated miner.

### Reply 4:
I'm waiting for the PCI Expansion Chassis now: <link> could attach a good mining card and use that

### Reply 5:
I don't see how it would be a problem as long as the temperature stays low.

### Reply 6:
Mobile VRM's aren't designed for 24/7 stress at 100% (or more if overclocked). The ventilation is designed expecting normal pauses every now and then.In general it's a horrible idea trying to mine continuously with an iMac GPU.

### Reply 7:
Yeah I'll give it a rest every now and then.

### Reply 8:
Notebooks also need to be stable on 24/7 stress. THere are desktop machins which fail at permanent load and there are notebooks which fail.My notebook with t7400 and Nvidia 9700GT is old, but it can stand 24/7 load too.THe temps are fine, in contrast to the HD5850 in my mining ring, its stable too, but becomes very hot.

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    ""hardware_name"": ""PCI Expansion Chassis"",
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    ""hardware_name"": ""HD5850"",
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11485,"Date: 2011-07
Topic: Problems communicating with bitcoin RPC
### Original post:
I downloaded GUI Miner a few days ago and was running well. Restarted my computer recently and now Im having """"Problems communicating with bitcoin RPC"" Help please...?If you need information let me know.I double/triple checked all my <truncated> etc etc

### Reply 1:
New version of GUI Miner was giving me problems so i switched to the old version and im good again.

### Reply 2:
Same to me. going back to older version solved the problem ...with 5% less mining power ...

","[
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10720,"Date: 2018-04
Topic: ANTMINER S4+ Discussion and Support Thread
### Original post:
Hy dear Bitmain and dogie,unfortunately the ""new"" S4+ has no significant improvement in power to hash ratio and on my personal opinion a decrease in attraction for home miners in Middle europe, US and other countries above $0,15/kWH.If i may post a wish for a S6 or S7, this would be 0,25W/GH and a noise level below 30db. Technically this should not be an issue for a legit company as bitmain is Kind regards,elrippo

### Reply 1:
I don't know if I would agree with all of this. I think home miners are starting to look at 220/240 so I'm glad to see them jump into this level. It allows for a lot in future.As far as .15 KWH in euros you might look into hosting centers I think you will be able to get it cheaper. Also avoid I'm guessing a Europe vat depending on the location of hosting you choose.

### Reply 2:
Bitmain, please treat the S4+ and it's users better than you did the S4's.

### Reply 3:
I personally am a fan of hosting my hardware at a location that i have immediate access to, virtually as physically. Unfortunately other countries have a quite huge advantage in terms of power cost and taxiation.If i remember wright, this is a community driven effort, and it should be possible, nearly possible for everyone to dedicate to it. With the current FIAT ratio and costs to mine, several countries if not continents have a disadvantage which can be partially compensated by technology.Bitmain seems to drive this as a big player in the industrie and serves home miners, and before i write further, i really appreciate this, so i do not think that this is technically a issue, this is more a strategic and philosophic state.I dont have to mine at 220/2240 here in Middleurope with a rasing diff of 3%. It starts getting profitable above 335/340 for one year, maybe 18 months.

### Reply 4:
<link> patches on the right side!air quality control on the ''testing site'' is beautiful!

### Reply 5:
That's the underside, pressed tight against the heatsink. You can see from the heatsink picture that those areas are fully enclosed and not exposed to the air what so ever.

### Reply 6:
You should know doggie you get yours free !

### Reply 7:
That could be and wouldn't surprise me. Just the same if the S2 upgrade kits ever get released with the initial specs the S5 and S4+ miners won't sell.

### Reply 8:
I don't know if I would say that. If you had a warehouse or huge operation this would be a nice product as far as the amount of hash it brings.With not being 110 its not a product for all, but there are some out there that are it's ""ideal"" customers.

### Reply 9:
I'm convinced the S4+ is just an attempt to make the S5 look like a better value, so they'll sell more of them. This is a marketing trick to make the lower priced product seem like a better value.

### Reply 10:
Ideal customers, anyone that cares about power efficiency and has plumbed 205V+ in already? I paid all of $150 to have an electrician drop in two 240V 20A circuits and they've been paying for themselves with EVGA, LEPA, Antminer, other PSUs running an average of almost 10% more efficient.

### Reply 11:
And your $150 get's thrown right out the window when you realize that the s4+ is an extra $200 more than the equivalent 2 S5s. And so your 240v line is saving you what? 3 cents an hour?

### Reply 12:
The included PSU cannot be used in countries with a mains power voltage lower than 205V. The PSU will not start below this voltage.Does this mean a Home in the USA can not use this as its only 110 service?

### Reply 13:
That's exactly what it means. Unless you've got your home wired with some double pole breakers that'll give you the 240V, this product is not for you.

### Reply 14:
Aren't American Dryers 220v?

### Reply 15:
Good luck convincing the little lady that she's got to hang your clothes out to dry because you're replacing her dryer with some miners .

### Reply 16:
Electric Stove is also 220... Whats the connectors for 220v to the back of a S4+??? L6-30P to C13 Right?

### Reply 17:
Yes, so you might soften the blow by telling her she no longer needs to cook anything.The point is, the double pole breakers you've already got in your panel are already being used for other purposes: stove/range, dryer, central AC, etc. Virtually every other circuit you've got in your box is a standard 120V single pole. To use an S4+ at home, you're either going to have to do something silly like replace your appliances with miners or install a dedicated circuit or two (and likely get your total amperage increased to handle the additional load).

### Reply 18:
How many amps is a 1500w Miner going to pull on a 220/240v Circuit?? my math says like 6.25... thats nothing(meaning I can safely run 3 S4+ on a single 20A 220)

### Reply 19:
At 240V it's 6.25A. Meaning you can safely run 2 on a 240V/20A circuit. You only load a breaker to 80% for constant draw.At 220V it's 6.82A. Again, you can safely run<rest of thread truncated>
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    ""hardware_name"": ""S4"",
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  },
  {
    ""hardware_name"": ""S2 upgrade kits"",
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    ""hardware_name"": ""S5"",
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    ""hardware_name"": ""EVGA"",
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  {
    ""hardware_name"": ""LEPA"",
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  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""PSUs"",
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    ""hardware_name"": ""Electric Stove"",
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    ""hardware_name"": ""American Dryers"",
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]"
16489,"Date: 2023-04
Topic: Mining Communities
### Original post:
can you share with me the mining communities you like and trust?websites, blogs, forums, facebook, telegram, discord, reddit, etc groupssame as well for repair, hosting and other services related to mining anywhere doesn't matter the language or the locationeg <link>

### Reply 1:
The best place to learn everything about crypto mining is on this forum, head for the mining section, Bitcoin and altcoin mining sections are available and there is no information missing about everything mining on this forum, from Asic mining and tweaking to accurate mining power solutions, like Solar panels and Grid combined, you are in the right place and no need to keep looking for another forum or telegram group. No other forum is this very informative, if you have something in particular that you want to learn about simply find it by using the search at the top right of your screen.

","[
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    ""hardware_name"": ""Solar panels"",
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    ""hardware_name"": ""Grid"",
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22739,"Date: 2018-09
Topic: Antminer S9 Fatal Error: some Fan lost or Fan speed low! (on ghost? fan)
### Original post:
Hey guys,so after about a year of mining my antminer broke. It doesn't show Hardware Version and BMminer Version. I googled and checked log, sure enough it reads:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc:<rest of post truncated>

### Reply 1:
So, here's the ""fix"": I tried switching the fans with L3+ miner and with those S9 boots just fine. Busted fan on L3 only reads 640RPM and is unusually warm to touch. I'm guessing bearing ball got busted, so I'm getting a new fan now.Still weird how S9's control board started seeing 3 fans when one malfunctioned. Hope this helps someone.

### Reply 2:
Glad you could fix it. Sometimes when the S9 has a faulty fan you will see two speed outputs from it.Side note, if you ever see the speed 30600 you have a faulty fan; the tachometer has crossed with positive voltage, giving you the max speed reading 255 * 120 = 30600. The newer firmwares are set to stop mining when this happens.

### Reply 3:
thanks Tim, that is interesting! I have actually been seeing 30600 RPMs for about couple of month on one of the fans (must have been the same one) but it continued on mining and temps were fine, so I didn't research it This is good to know!

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14098,"Date: 2011-06
Topic: Question about slush's pool and reward system
### Original post:
Alright, so I've been mining on slush's for about three hours and the values for estimated rewards and unconfirmed rewards has been increasing, but when will the confirmed BTC show up?And how is payment calculated? I switched from Deepbit (the rates were getting ridiculous, it dropped from 0.0004 to 0.0002 to 0.0001 over the past few weeks). Deepbit had a proportional/PPS payment system, but slush's pool doesn't even specify how users are paid.

### Reply 1:
Hi I'm totally new, and have started mining yesterday on slush's pool (Not even sure about other pool's existence lolx)I basically followed those newbie guides and started mining before I started understanding what's going on. But regarding this, I've read somewhere that basically you need to wait for the unconfirmed rewards to 'clear' certain amount of 'blocks' or time? before they start turning into Confirmed rewards.So the unconfirmed rewards from each round takes a certain amount of time before it will be confirmed. Then once the confirmed rewards accumulate to your set amount it'll then send to you wallet. Something to this line. I'm not sure why they do this, it's probably got to do with some security of some sort. Maybe theres some way people could exploit if not done this way. I'm not sure. Anyway, this is coming from a total newbie so I wouldn't listen to me haha.

### Reply 2:
After 100 conformations a block is considered ""valid"". Click on the ""stats"" link on the left nav, it will give you an idea of how close your blocks are to being valid. It just takes the Bitcoin network some time to insurance that a coin will not get orphaned.

### Reply 3:
Here's how it works:You start mining in a round along with everybody else. By mining alongside others, you contribute your hash speed to the greater hash speed of the pool (a little bit from you, a little bit from some other guy, a greater bit from somebody with more hash power than you etc. it all adds up to the total hash speed of the pool). The greater the hash speed of the pool the faster it solves one block. Here's the catch though. Each solved block gives away 50 bitcoins. Those 50 bitcoins have to be shared among avery person that contributed with hash speed to its solving. Naturally, the ones that contributed more will receive more. This is accomplished by shares. The number of shares you get represents the amount of bounty you get from the 50 BTC reward and is established by the hash speeds you contributed during the duration of the round. From that picture, I can see that your bounty, based on your current hash speed is estimated to 0.0704 BTC. Naturally, people contributing more Hps will probably have a bigger reward than you. When the block is solved and the round finishes, the estimated bounty will be added to the unconfirmed bounty field. From that moment on, you have<rest of post truncated>

### Reply 4:
So, 100 solved blocks later I will know how much I've made?I actually like Deepbit's system a lot better. It's a lot easier to keep track of earnings. But if slush's pool yields higher rewards, I'll wait the 100 blocks.

### Reply 5:
slush uses the score-based payout method described here.You will know how much you made before the blocks mature (unless the block becomes invalid, which isn't very common), but you will get it only after it matures (until then it will be ""unconfirmed reward"", but will not change).Deepbit's PPS rates drop because difficulty increases. This will cause an equivalent drop in the payouts of all pools. Deepbit's PPS calculates rates based on a 10% fee.slush's main advantage over deepbit's proportional is that it is more resistant to pool-hopping.

### Reply 6:
There were actually quite a few in the past 24 hours. Since I've only been doing this for a week or so and am not sure exactly what that means, it has me worried at bit; One of my GPU's is overclocked quite a bit and I'm worried it's causing invalid results to be sent to the pool, would that cause an invalid block? It seems the invalid blocks only occur during the times I participated, could that mean I screwed my fellow miners over?

### Reply 7:
No. If your GPU spews out something invalid the program will reject it, and even if not, the pool will reject it (one of the key features of hashing is that it is easy to verify, so the pool will just reject anything sent to it that is not 100% kosher). I know about the invalid blocks recently, they're probably a result of some technical issue on slush's end which should be resolved shortly.

### Reply 8:
I've already noticed that slush pays out far more than deepbit over the same amount of time. I've only been mining on slush for a few hours and I already have 1 BTC. Compared to the ridiculous 2.5 BTC/24 hr on deepbit -__-How do I manually pay out the BTC to my address? Is there a ""send payment"" link...somewhere? Or does it just have to reach the threshold?

### Reply 9:
What ca<rest of thread truncated>
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16442,"Date: 2023-03
Topic: Technology to aid bitcoin mining
### Original post:
Bitcoin mining consumes power supply but the numbers of Bitcoin miners and other cryptocurrency miners continues to increase.Is it possible for the invention of a technology that will aid mining and reduce energy consumption?

### Reply 1:
More than 100% of power used to mine bitcoin today can be reduced to just 10% or less than 10% if bitcoin go from PoW to PoS, but if bitcoin community moves towards that direction, that makes bitcoin which is not centralized before to becoming centralized. Also bitcoin is considered a commodity, moving from PoW to PoS would make bitcoin a security. So for bitcoin to move from PoW to PoS, it won't maintain its natural state of being a commodity.

### Reply 2:
It is definitely possible, just like any technological advancement. For example, better ASIC manufacturing processes, better energy generators, etc. When will it happen, and whether it is costly or not, should be the next question. If you take a look at the GPU market for example, the product does get better with advanced manufacturing processes (from 14nm to 7nm/5nm), but the cost to buy one is arguably increasing compared to older cards. The same will happen with ASIC or other mining devices, but probably won't be as fast.At the end of the day, when that day comes, I believe the hash rate will increase again. Eventually, we will reach another equilibrium as usual. Don't expect new miners to get profit easily with just some ASICs just because it is cheaper to run. CMIIW.

### Reply 3:
If, for example, a new type of chip would be found that's much more efficient, people would probably just buy more of them... The diff would probably just rise but the power consumption would remain the same.Only if the price would drop significantly over a longer period of time, people would start shutting down their ASIC's and the power consumption would decrease (at least, that's what i guess will happen).

### Reply 4:
Better ASICs means lower cost per mined coin, increased profitability for the miners, and buying of more ASICs.It's like switching from S9 to S19, 3 times more efficient but we had the equivalent of 2 million at 1300W of the former at the end of 2017 and now 3 million of the latter at 3000W.Yeah, that is only one way to cut energy costs without changing to some crappy algorithm, and it comes with the same problem, security, miners will consume less energy if the revenue is smaller, so a drop in price will for sure kill a lot of electricity consumption, but it will also degrade the security of the whole chain.

### Reply 5:
Bitcoin mining will develop if it is profitable. For mining, new modern nuclear power plants or other power generation stations will be built, but the price of electricity will also constantly rise.And mining will have to be concentrated in those countries where there will be opportunities to produce cheaper electricity.

### Reply 6:
So this is the reason Vitalik Buterin innovation on bitcoin was not accepted?

### Reply 7:
I don't know if there will be a cheaper source of electricity in the nearest future which might enhance mining activities, but presently there it is no cheap electricity,which is the major challenge to miners. The only way out is if miners don't see mining as a profitable investment anymore,they will shut down their mining farm and the few left will have more than enough electricity to use. Using cheaper mining devices will run you down financially and it is not advisable.

### Reply 8:
AFAIK using PoS does not mean the coin/token is a security, but it makes it easier to centralize it and that definitely does not sound like what Bitcoin was meant to be. I'm not sure what innovation on Bitcoin you're referring to here other than switching to PoS, since Vitalik does not contribute to Bitcoin development iirc. CMIIW.A better wording is probably not every miner has access to cheap electricity. Some miners do have one, and some build one if my understanding is correct based on reading on this sub, but most are constrained by location, devices to generate it, etc. That being said, as mentioned above, even if it becomes cheaper and easier to find electricity, the market will likely adapt and change the equilibrium between difficulty and profit. So basically, the condition won't change much.

### Reply 9:
Moving to Proof of Stake make bitcoin use less energy but I don't think this good Idea and community would like it. But as far as I know bitcoin machine today is already efficient if we can look at the past Antminer S1 SpecAntminer S1 Dual Blades SpecHash rate: 180 GH/SPower consumption: about 360 W from the wallPower supply: 3 +12V DC inputPower efficiency: 2 W/GH/s on wallToday Antminer S19XPModelS19 XPAlgorithm | <truncated> | <truncated> TH/s141 3%Power on wall @25C, Watt3031.5 5%Power efficiency on wall @25C, J/TH21.5 5%New ASIC new technology and a lot of things push miner manufacturers to keep more efficien<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19XP"",
    ""hardware_is_owned"": false
  }
]"
11392,"Date: 2011-05
Topic: Close Window do same as Ctrl+C
### Original post:
Someone all ready brought it up earlier, however I have proper usecase for this now.I'm using windows 7 and if i run the client and then use ctrl+c to close it, everything shuts down cleanly and life is good.If I click the close window icon or kill the process it crashes the nvidia driver, the screen goes blank and windows says ""graphics driver recovered ok""Would it be possible to put the same code that makes stuff end nicely on ctrl+c in the same place as closing the window via the top right icon or killing the process.the usecase is I'm using Task Scheduler to run the phoenix when the computer is idle, works great except for the task scheduler killing the process when the computer is not idle anymore as it crashes the nvidia driver and the screen goes blank for a second etc...Thanks

","[
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    ""hardware_name"": ""nvidia driver"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""windows 7"",
    ""hardware_is_owned"": true
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]"
4002,"Date: 2018-12
Topic: Canaan ""Flash Sale""
### Original post:
We were discussing this in the kano.is Dicord group and someone has already confirmed with Lily that it's legit as the sale doesn't show on Canaan's main page on last check.<link> like an awesome way to pick up really good miners for a nice price. However Canaan has a MOQ of like 50 for the 921 so maybe a group buy or some sort of collaboration? I wasn't sure if this forum or group buy was appropriate, but I thought I'd start here.

### Reply 1:
so 200 x 50 = 10000 x 1.276 = 12,760 or 255.20 a unit plus shipping.and they do 20th at 1700 watts correct?do they come with the psu I think they do.if minefarmbuy can set up a group buy if they come with the psu I may want 1 or 2.

### Reply 2:
@ $250.00 per running at .055 per KWH the unit alone takes 8 months to pay off. No thanks. The street's are running with much better deals on brand new Hash power already stateside. Many cases you can save shipping by picking up. ""After recent negativity in the industry around issues like the bitcoin cash hash war, he said: Nows the time to celebrate, were at a bottom.A little "" Premature Speculation"" if I may.

### Reply 3:
I am not sure about the PSU or controller, I think it's just the miner. I have to be honest I am not to hip on Canaan specs, looks like it's 20TH @ 1800W +/- 20%.

### Reply 4:
a good price if someone grabs a 50 packyou are right no psu 1800 watts for 20th

### Reply 5:
the deal works for some not all people.

### Reply 6:
Group buys, a novel idea. . .. Best way to bring asics into the states right now. Is this were I plug a certain website? I didn't see verbiage about a 50 unit MOQ anywhere but at this point we all know the sale is legit. Controllers are a good price right now with Canaan as well and their psu (just psu is only 1600w if I remember correctly).

### Reply 7:
Um, Blockforge and probably other Canaan distributors still have their flash sale going as well. At BF the A921 is still $349 so why buy bulk and have to deal with import fees? And, Blokforge now has a 2kw PSU for the A9's as well. Just curious as to why the Group buy?

### Reply 8:
This post was before the ""Flash Sale"" emails came out. That sale kind of invalidated the group buy IMHO.

### Reply 9:
Essentially it's the same process regardless who ""distributes"". Buyers either deal with customs through mark up or tackle it themselves.I wouldn't think so. 20-50 people sign up for a sick deal on upgrades to their canaan farms is still possible. Duties can be tricky but not overly complicated to tackle.

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21197,"Date: 2016-12
Topic: Miners are offline on Slush's pool, what am I doing wrong?
### Original post:
Well, to start off, I am using a Antminer S5 to mine and it works fine and I have 1 miner that is mining but others are offline. That's really all the specifics I can give atm as I have to go right now, so I'll be answering any questions to solve this problem.

### Reply 1:
Provide more information such as screens hots of your miner configuration. Do you have all your settings in right? Eg. Your worker name etc

### Reply 2:
Slush pool support thread:<link>

","[
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11059,"Date: 2021-12
Topic: Bitcoin price..what does it mean for mining power? Buy BTC or mine is a dilemma
### Original post:
Hello,I have done some research on Bitcoin. I have so many questions trust me, now posting only a couple of them.My question is, are there any good resources on setting up a mining machine? What OS is preferable for mining? After the price drop, what do you see in terms of network mining power? Will it drop significantly?Is the diffuclty major obstacle to enter mining or the price will be increasing steadily along with the difficulty?Bitcoin mining to me is just like a way to acquire the coins at discount while having few other risks though as i do believe in its future value, mining seems to be more risk averse approach that looks more suitable to me personally and that always brings cash generating revenues rather than just buy and hold passively...Any help here is appreciated. Please share your experience thanks.

### Reply 1:
You can see few of my guides to understand how to setup a Bitcoin ASIC miner. The links are in ny signature space.Btw, no need to use bolded text. I can read your post just fine without bolding.

### Reply 2:
Imho mixing up minig and holding is a mistake to be avoided. They're different things and even if you may do both, it's good to do the math separately.This being said, you'll have to make sure the mining you (would) do is profitable (counted like you would sell immediately all the coins you mine). And this usually means extremely cheap electricity. And since you didn't state what's the price for you, we don't know if you should start mining at all or not.Holding is clearly much easier, basically all you need is a safe wallet (preferably hardware wallet or - if you are tech savvy - cold storage). Of course, you need a strong hearth too, to handle the big price fluctuations.About price and difficulty... it's hard to tell.. sometimes price follows the difficulty, sometimes the difficulty has to follow the price. For example I remember the crypto winter in 2015-2016 when many miners gave up. such events happen rather rarely, but they did happen.So have to do the math and see for yourself, really, what would be the best course of action.PS. Since you've asked about OS there may be a chance that you were thinking on mining with GPUs and such. That mines altcoins, which you may or may not<rest of post truncated>

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  {
    ""hardware_name"": ""hardware wallet"",
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  },
  {
    ""hardware_name"": ""cold storage"",
    ""hardware_is_owned"": false
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]"
16724,"Date: 2011-06
Topic: x2 6990 + x1 6950 problems, help please! (2 BTC reward for fix!)
### Original post:
Hi, I have 2 Sapphire 6990 and 1 XFX 6950 in my mining rig with a 1200W coolermaster. 2 Monitors and 1 dummy plug, so the 3 cards supposed to be active. When I open Guiminer I just see 3 devices... but the problem is the 6990 devices are just one core of the card so 3 devices isnt correct... I found that when in Catalyst driver I active the ""crossfire"" option for both 6990 in Guiminer I get the 5 devices correct (4 cores from 6990s and 1 core from 6950) BUT when I start mining with the 6990s I get the error ""Verification failed, check hardware!"" after few seconds running...Any help? I tried almost everything... format windows xp, windows 7, 2 power sources, just 2 cards, etc... like 3 days trying to get all runing ok and still nothing

### Reply 1:
reward is now 2 BTC for the one who really help me to get this cards working as they should!

### Reply 2:
Ok, are you using the default drivers or the latest from ATI?Jono

### Reply 3:
Latest driver from AMD.com and the latest AMD APP SDK, latest guiminer, latest gpu-z, latest afterburner.Will show some screenshots soon!

### Reply 4:
...and you can't mine with a single 6990 core (i.e. any one of the four cores)?Also are you attempting solo mining or pooled?

### Reply 5:
Right now Im just trying to get one 6990 to work properly (just one card in the mobo) and I can see just one core in guiminer if CrossfireX option es disabled in CCC, and I can mine ok but as i said just one core... If I enable CrossfireX option in CCC, I see both cores in guiminer but one core work ok and the second give ""Verification failed, check hardware!"" error.Also in AfterBurner I see just one core with the right info, and the other core appears like no info... core speed, etc.

### Reply 6:
Download LinuxCoin and put it on a thumb drive or CD to see if you're able to run it on all the cores. You should see two devices for each 6990 card.

### Reply 7:
Is an OpenCL problem! Cant fix it but Im using AOCLBF with phoenix and is ok... anyways when I use both cores (As I said Im using only one card right now 6990) gpu usage goes like 60% in both cores is weird... using one core give 99%Edit:FINALLY FIXED !! Special thanks to ""Departure"" !!

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    ""hardware_name"": ""phoenix"",
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]"
16211,"Date: 2022-03
Topic: List of russian miners pro-Putin - boycott
### Original post:
Here's a list of miners to boycott:<link> has confirmed links with Putin - Boycott and shut down<link> unclear position - tbdThe ones with confirmed links with Putin, have already been made a target of Anonymous. Please contribute to this list and update, we'll report and contribute to shut them down.Expect us

",[]
13932,"Date: 2011-05
Topic: Cost Defecting Mining
### Original post:
- or - How to Lose Money Whilst Really Really Trying Howdy folks. Against the better judgement and superior mathematics of my Bitcoin brethren, I decided to venture into the land of rental GPU power. Burnt myself the better part of 24 hours, as well as a hole in my pocket.Enter Amazon EC2 Cluster GPU InstancesThe stats they give:2 x Intel Xeon X5570, quad-core Nehalem architecture2 x NVIDIA Tesla Fermi M2050 GPUs64-bit platformUSD$2.10 per hourUp to 8 instancesThe stats I got:8 CPU threads x 3200 khs-1 = 25.6 Mhs-12 GPU CUDA threads x 90 Mhs-1 = 180 Mhs-164-bit binaries$2.10 hour-1 x 8 instances = $403.20 day-1The stats that matter:25.6 Mhs-1 + 180 Mhs-1 = 205.6 Mhs-1 x 8 instances1.64 Ghs-1 @ $403.20 day-1 1.64 Ghs-1 now= 1 block every ~3.4 days1 block = 50 BTC @ USD$3.47 = $173.50 / 3.4 days = $51 day-1 Permit me a LOLThe experiment did yield spoils, however: in the form of 64bit Linux binaries. Any and all donations are appreciated.NOTE: These are built against the Amazon 64 Bit Linux AMI's, so YMMV. Debian/Ubuntu users should get TuxSoul's Debian packages instead.CUDA RPC Miner & CUDA 2.0 CUBinary - <truncated> Miner Demon with 64bit SSE2 support - <truncated> also built binari<rest of post truncated>

### Reply 1:
Funny thing, today i pondered over the same question. You showed that it is not profitable at all. Do you think renting only the obviously faster CUDAs could yield profit?

### Reply 2:
The fastest CPU rig has less than (or equal to) the CPU power of the GPU cluster, but at 0.70USD so you can get three of them for the price of the GPU rig. Which max'd out give 25Mhs-1 each, giving 75Mhs-1 for the same price of the GPU cluster, which yields almost 3x as many hashes. If they swapped out the Nvidia's for AMD/ATIs it'd not cost them any more, yet would make it very worthwhile, and would likely change the state of bitcoin slightly (would Amazon target bitcoin miners? upon request? who knows!)So no, I don't think the CPU rigs could be faster (none of the smaller rigs have GPUs, maybe if they offered a 'micro' with the Tesla, but I very much doubt they would). I ran a CPU rig for a few hours and just quit it. No point.What about the tiny instances? Hundreds of tiny instances running their little CPUs? No idea. Anyone (with more cash spare) up for the challenge? I'll do it for BTC <truncated>

### Reply 3:
Thanks! When I get a few more BTC in my wallet I'll try to remember to send a couple over, because I've been wondering about this. Have you looked at this at all with regards to the MapReduce pricing @ $0.42/h? I'm not entirely sure what the difference is from the two, but I'm curious if it would make a difference.Thanks!

### Reply 4:
lets hope amazon (or any other cluster) doesnt realize they can destroy the whole mining economy of bitcoin in an instant if they use their spare computing time. Would be funny to see some big player let loose their hashing power. in the end the most economical miner will win though, and thats the student in his dorm, where power supply is for free essentially ^^

### Reply 5:
From the Amazon Pricing Page, I found this little nugget:So that's $0.42 in addition to the $2.10, as well as any S3 and SDB usage fees. You're paying more for the convenience of enhanced interoperability.

### Reply 6:
The plot thickens... to somewhere between treacle & caramel.You can actually rent Amazon images cheaper than the ""On Demand"" rate. How much cheaper? Well, for the GPU instance, about a third of the price. How so? Well, you can either rent the server a year or three at a time (that's $5630/year for the GPU instance, yielding ~13.40 blocks - 670 BTC. How's the ol' cognitive biases going?) - OR - you can bid for instances. This is called ""spot"" instancing. Think of it as the Mt Gox of instance rental. They even have pretty graphs of the history of bids.So, spot pricing... well, the GPU instance goes for about $0.76 per instance hour. That's a good 1/3 of the usual price. So lets shoot back to my original post and push these numbers around...$0.76 hour-1 x 8 instances = $145.92 day-1 1.64 Ghs-1 now= 1 block every ~3.4 days1 block = 50 BTC @ USD$3.47 = $173.50 / 3.4 days = $51 day-1 You're still only making 34% of your money back (if you sell now). You're better off playing pokies. Seriously.So still not good value. But it's much better. So unless you have spare cash now and expect the value of a bitcoin to more than double before you want to cash out, buy an ATI/AMD 8XXX; and even then<rest of post truncated>

### Reply 7:
Oh, if you want to get some of your money back from this litlte experiment, go here. Any Amazon AWS account is eligible, I got $20 from it even though I only use a micro instance.

### Reply 8:
I love you I love you I love you! When my $20 clears I'll show my appreciation

### Reply 9:
Do not mine at a current loss. Period. If you are mining at a current loss (even if you expect BTC to go up in the futu<rest of thread truncated>
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4164,"Date: 2012-09
Topic: Cairnsmore1 - Grade B Stock
### Original post:
Throughout the Cairnsmore1 build we have been grading out lower performance boards and sticking them on a shelf to look at later. We have about 50 of these Grade-B boards to sell and we are going to offer them in 2 ways. First way is you can go on our webshop and buy them at GBP 370 (+ vat if it applies), or equivalent in USD or Euros, with carriage on top of that. Local taxes and duties may apply as well to non-EU countries.Second way is a Bitcoin purchase and we have set a fixed price for board and carriage in BTC. The only variation is if you live in the EU we have to apply VAT at 20%. For non-EU the fixed price will be 60 btc. For EU buyers it will be 72 btc. Non-EU customers may have local taxes or duties as well charged by the courier.This grade will guarantee 700MH/s as performance. We will configure boards here to what we think is optimal configuration and may disable programming features so these cannot be changed from the set performance level. We will trickly these out over the next 2-3 weeks as we go through the process of setting them up and verifying the grade level.

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22314,"Date: 2018-01
Topic: Power Distribution Units in mining
### Original post:
Hi I was hoping someone could quickly educate me as why a power distribution unit, like those used in data centers, don't seem to be used to power the mining ASICs? It seems like everyone buys an S9 and an associated power supply. Is there not a better or more efficient and large-scale way to supply power to the miners than by purchasing individual PSU's for each?I am trying my best to become more IT knowledgeable and it's tough

### Reply 1:
A pdu does not provide power,Servers in server farms have their own internal power supplies.Miners are external, the PDU is just a large fancy power bar.Some times with remote control ability.They are not use much because they are just an expensive power bar so many people od not require them.

### Reply 2:
A PDU is generally a ""fancy power bar"" with at least minimal current and/or voltage monitoring, and often switch-controlled or even remote switch-controlled outlets.It DOES NOT replace a power supply in any way shape or form.It is often used as a fancier or more flexable version of a ""secondary power distribution panel"" + outlets wired to such a panel.

### Reply 3:
The best way is to have individual PSU for S9 ASIC, well unless you find a more efficient way to turn your AC (alternating current) to DC (direct current).Also for a house to have both AC and DC is very confusing so forget about it and don't save on that PSU ..

### Reply 4:
IF you are talking about a few hundred KW of power on up, then yes using a high DC bus fed from the mains followed by local bus DC-to-12vDC is worth considering. HP, IBM and others all have DC fed 12v PSU's available just for that purpose.The power eff advantage comes from losing all of the the normal input brute-force mains-to-DC and PFC power conversion stages found in each of the normally AC-fed local 12v PSU's. Instead a single several hundred KVA 3-phase transformer with full-wave rectified delta-wye secondary provides what is essentially pure DC with less than 0.7% ripple and no further filtering needed. Typically that high DC bus is around 300vdc or more which is also what the input stage to a normal 208vac PSU feeds to the power conversion stage that make the 12v.

### Reply 5:
Yes. This is exactly the answer I'm looking for. I can't say I fully follow what you are saying, but I think I got the gist. I'll do more research so I can understand properly.For the application I am thinking about, I will be using somewhere around 30-80 kW. Would you say this is too low for me to consider the solution you are suggesting? It would just be nice to avoid purchasing individual PSU's and instead design the electrical distribution system around it.

### Reply 6:
The cost of the system and rails is REALLY high and not really something to be found used.So more so for a big new build.For your want.. you could get 5 or 6 of the 8kw setups from the guys on here, and be ready to goDirect DC is not a real option for your needs

### Reply 7:
Here's what I'm meaning.10 of these would be 80kw.I can't even find a single 80kw DC output device to link you...<link>

### Reply 8:
The incoming AC mains to high DC bus feed is by no means an off-the-shelf item... As in ALL high power distribution systems they are custom-built per order often by companies such as ABB, Siemens, NTT, et al. The DC fed PSU's on the other hand are made by most commercial server-class PSU makers excluding Consumer type stuff.The main link I have to folks who design & provide everything related to Data Center power gear is <link> the same vein they also do the cooling design as well. Many good whitepapers on power and cooling to be found there as well.Found this which covers the topic in detail <link> <link>

### Reply 9:
Thanks Takagari and NotFuzzy, I will check out these links over the next few days. I wish I studied computer / electrical engineering instead of Mechanical ... having tons of fun learning about this stuff though, it's never too late hey! I appreciate the help

### Reply 10:
Not sure if I'm missing one of Optimizer's boards, but I believe he only makes 2K and 4K (the 4K being similar in design to the ones I carry). Is there a 8K (4xDPS-2000BB) that I'm missing? That would be a freaking beast, but not sure I see the advantage over 4K boards which deal with high enough current as it is.PDU's can save you money over wiring multiples of smaller 15-20A circuits. Instead you can wire in single 50A circuits with appropriate <truncated> and end up with 8kW-capable circuits on 200+V. If labour is also expensive where you are, I see it as being advantageous over wiring 4x individual equivalent 15A circuits to end up with the same 8kW of PSU's. As mentioned earlier, they essentially act as a sub-panel, but can be had for considerably less than a sub-panel, and come with ""receptacles"" built in. They can also be helpful if you want to mix smaller PSU's in with larger PSU's, as you can pick up C20 power <rest of thread truncated>
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10551,"Date: 2017-09
Topic: S9's sold out
### Original post:
Bitmain has stopped taking orders for S9'sAnyone have any idea when we could expect them to become available again? Or does this indicate a new generation of miners is going to be released?Anyone know of any other reliable sources to get about 10 (new) s9's?Thanks.

### Reply 1:
S9 is pretty old in term of ASIC. The current ROI is really high if you find one of those. They hardly make 10$ per days.You must be really early in the game when it comes to ASIC miners...

### Reply 2:
Yeah, you are right, but the current 220+ days for ROI is a really long time. Of course if the bitcoins skyrocket to 5000$ then that would be a very different story !

### Reply 3:
S9's can't get old unless a better version comes out. S9's ROI time is low long because bitcoin's price is not high enough.Don't look at other mining hardware while making comparisons. Nobody would buy L3+'s If ltc was still 4$. Same goes for eth and gpu mining.You'll never know when will btc take its market dominance back. What'll happen to those alts then?

### Reply 4:
The S9 demand is still around. They presale their gear. Currently sold out, I believe, is a batch to be shipped in late August.

### Reply 5:
Considering the likely slower development of future nodes and less efficiency gains along with that, the S9 could well be an ASIC we see well into 2018. They're probably going to make more of them, at least until the S7 becomes obsolete.

### Reply 6:
Only in the crypto coin world would 'ROI' (and apparently defined here as purchase-price being recovered) in 220 days be called 'a long time'. Capital equipment purchased for any other business is usually looking at well over 1 year and more until break-even is reached... Why do you think we are allowed to write off cost of <truncated> if in the USA there is this Section 179 IRS deduction

### Reply 7:
S9s routinely sell out on a specific batch, then a new batch gets posted for ""presale"" commonly in a week or two after that.

### Reply 8:
You are also totally right ! 220 days is fine for ROI, problem with ASIC is the devaluation that is really fast. And when I say 220 days, it is at current dificulty. So, it's a bit difficult to predict the real ROI. I prefer video card mining since when they don't produce anymore revenue by mining, they are still valuable and could be reused for gaming. ASIC become a waste really fast compare to video cards.

### Reply 9:
Still, this could all change quickly. Remember 2014 and the Litecoin craze? Everybody bought up 200 series AMD cards and once it all collapsed AMD was forced to rebrand the 200s as 300 series cards as they couldn't get them off their hands. ETH is designed to be asic-proof but it is soon to become POS and it is still unclear whether or not other coins will still be profitable with so many cards mining on them. Even recently the profitability on Nvidia cards has dropped, I recall someone saying profit on GTX 1080TIs went from eight bucks a day to around five recently. With all the media coverage like on YT and newbies coming into play like never before, it's becoming increasingly risky to GPU mine.

### Reply 10:
Another thing to keep in mind,rate of failure.....180 day warranty BUT,you pay for shipping & possibly (most likely) for replacement hashboard or controller More costs to add to an even longer ROI.............one of my vid cards died & they sent me a free label & within 2 weeks after shipping it, I had my new card,no bullshit,no extra shipping costs,no hassle from manufacturer

### Reply 11:
Are you search about AntMiner S9 - (13TH/s) Bitcoin Miner New (16nm - 0.098 Watt/GH), right??

### Reply 12:
They're in stock (September delivery) @ bitmain.

### Reply 13:
Just got my order in, thanks.Hopefully I'll have my first S9 mid-September, still waiting for my wire transfer to go through and confirm my order.

### Reply 14:
bitman is great company. most of their products sold out fast

### Reply 15:
I really doubt this, doesn't sound very legitimate don't waste your money.Great company might be a bit of a stretch, they have only recently starting seeing some competition on a scale that might make them try and become a great company. Just selling out your product when globally there is way more demand than supply doesn't make you great.

### Reply 16:
Enough with the spamming the same ad over and over again in different threads dude...Reported to mods

","[
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""video card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""200 series AMD cards"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""300 series cards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GTX 1080TIs"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""AntMiner S9 - (13TH/s) Bitcoin Miner New (16nm - 0.098 Watt/GH)"",
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23731,"Date: 2021-10
Topic: S19 PRO - REG_TYPE
### Original post:
Hello,can some one help me identify problem with S19 PRO ? Anyone same problem ?Miner finds all ASICs.Here is historical <truncated> <truncated> 23:18:06 !!! REG_TYPE = 1. <truncated> 23:18:14 !!! REG_TYPE = 1. 9972075522021-10-13 23:18:24 read asic reg error: expect chain = 0, chip = 100, reg = 176, got chain = 0, chip = 130, reg = 1982021-10-13 23:18:24 read asic reg error: expect chain = 0, chip = 100, reg = 180, got chain = 0, chip = 65, reg = 52021-10-13 23:18:38 !!! REG_TYPE = 1. <truncated> 23:19:07 !!! REG_TYPE = 1. 9282252802021-10-13 23:20:09 !!! REG_TYPE = 1. <truncated> 23:20:27 !!! REG_TYPE = 1. <truncated> 23:24:33 !!! REG_TYPE = 1. <truncated> 23:25:16 !!! REG_TYPE = 1. <truncated> 23:25:42 read asic reg error: expect chain = 0, chip = 76, reg = 184, got chain = 0, chip = 15, reg = 2032021-10-13 23:26:05 !!! REG_TYPE = 1. 8762516482021-10-13 23:26:40 !!! REG_TYPE = 1. <truncated> 23:30:16 !!! REG_TYPE = 1. <truncated> 23:30:36 !!! REG_TYPE = 1. <truncated> 23:30:41 !!! REG_TYPE = 1. <truncated> 23:30:47 !!! REG_TYPE = 1. <truncated> 23:31:13 read asic reg error: expect chain = 0, chip = 122, reg = 180, got chain = 0, chip = 0, reg = 742021-10-13 23:31:38 !!! REG_TYPE<rest of post truncated>

### Reply 1:
What exactly is the problem of your miner? Does it seem that it's not the whole kernel logs?Would you mind editing your post instead of pasting them partially just copy the whole kernel logs from beginning to the end?It can help us to get more insight from your miner logs.The first solution that I would like to suggest is to try to flash it with the latest firmware from Bitmain2nd if it doesn't solve the issue try to reattach all power cables and make sure it was plugged directly into the wall outlet.

### Reply 2:
Code:2021-10-14 14:07:31 !!! REG_TYPE = 1. <truncated> 14:09:14 !!! REG_TYPE = 1. <truncated> 14:12:34 !!! REG_TYPE = 1. 1431379456The kernel log is incomplete, please post the whole thing, also, does this error show up right after you start the miner or it hashes fine for a while and then throws this error? most of the issues the S19 pro are related to the power unit, if the voltage isn't stable between 220 and 240 or the PSU is placed too close to a wall or has some hot air close to it it will cause all types of issues.But to be sure, I need to see the complete kernel log and an image of the status page.

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20998,"Date: 2016-04
Topic: Raspi 3 mini mining rig setup?
### Original post:
Hi everyone,Basically im looking at setting up a raspi3 to act as a controller for my two U3's and a gekko compac usb stick. Im doing it to save me using my laptop all the time and having to have it constantly plugged in to run cgminer. Im after any pointers or help with regards to setting it up.I was thinking about getting a powered hub and running the pi from that, aswell as all the other miners (including an arctic breeze usb fan) as the gekko is quite power hungry from what ive read (well when its OC'd). Would this be a feasible option?I'd like to run cgminer 4.9.2 (gekko edition) which has been working really well on my laptop. Would it be a simple case of copying the folder over to the pi?What OS would be good to use on the pi? As you can tell im a complete novice when it comes to anything more involved than switching it on and writing posts on the forum A step by step guide would be great, ive tried searching but cant seem to search for the right thing to get the answers im looking for.Thanks for your help in advance

### Reply 1:
Here is the setup I used to get a raspberry Pi working took about 20 minutes to setup...If you follow the steps in my order with the instructions I supplied you should be able to get it up in running in no time... then you can tweak the OS to the way you want it for instance host name, static ip etc then you just ssh to the pi from a computer start up the miner or set the pi to start the miner on its own etc1. Install <truncated> download free @ <link> Resize Flash Partition Instructions to do this here: <link> Follow these instruction on how to install cgiminer @ <link> D

### Reply 2:
Nice on thanks cowboy. Ill give it a go once I get a Pi. Its the more indepth setting up of it im concerned about aswell. Like getting it to restart by itself if it encounters a problem. Plus getting the .bat file information across correctly as its running well at the moment.This raspi stuff is a bit out of my comfort zone but im willing to learn, just don't want to end up screwing it up and having an expensive paperweight (albeit a good looking cirecuit board) lol

### Reply 3:
Just a few notes along the way you cant power the pi off the same hub thats going to be plugged into the usb port it causes a feed back loop on the data and the pi gets confused. if you want to do it that way then either get a bit of electrical tape and cover the middle 2 pins inside the usb cable thats powering the pi or cut the data connections out of the cable (hope that makes sense) and youd have to build cgminer (not hard to do with a good guide) due to it being arm chip and not x86 or 64bit keep an eye on what power you draw from the usb port on the pi (max of 250ma) or youll get errors and devices going zombie

","[
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    ""hardware_name"": ""U3"",
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    ""hardware_name"": ""gekko compac usb stick"",
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    ""hardware_name"": ""arctic breeze usb fan"",
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    ""hardware_name"": ""raspberry Pi"",
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16406,"Date: 2023-01
Topic: Investing in solar power and miners
### Original post:
Hi,I am thinking of investing about value equivalent to 1BTC at today's price 16.K in a dedicated solar power panels at my roof and use the energy produced for mining bitcoins.If I buy second hand miners with 200TH hash power included in the package, how I would calculate time of investment return?

### Reply 1:
There are some tools that you can use to calculate your ROI not accurate due to changes in the price of Bitcoin and difficulty but you can get an idea of how days or months you can reach the ROI.Here's the tool that I'm talking about <link>

### Reply 2:
So I just did some basic search because I'm also curious about this. I'll use the US price for the panel installation. It seems like you need to pay around $13K on average to install a 6kw solar panel. Since you need to buy a miner too, you probably need to spend another $3k at least to buy a 100+ TH/s miner, something like S19. That means your cost on average is around $16k. If you use the calculator shared by Bitmaxz to calculate this, you'll need around 2 years to break even. This assumes the difficulty decrease by 7 percent each month, the BTC price stays the same, your panel doesn't break, your miner doesn't break, you constantly mine at 110TH/s, and so on. Do calculate on your own though, since there are a lot of assumptions here and I'm probably wrong about some things (the rig choice, price projection, etc).Here's the ref link that I use to find the data for the <truncated>

### Reply 3:
well assuming you can get 10 k-watts for 14000 you only have the power to run10000/5 =2000 watts 24/7best case.or10000/6 = 1667 watts 24/7. you can get a used s19 for 1500 use braiins down clock it to burn say 2000 watts gives you around 60ththat is 60 x 7 cents = 4.20 a day or 4000 days to break eventhat is 11 years.I also left tons of constants. 7 cents a th in earnings constantdifficulty constant16k for a coin constantI left out all the incentives you government may give you for having the solar panels.

### Reply 4:
Thanks all.Looks like it is financially better option just to buy 1 Bitcoin and wait for next price increase.

### Reply 5:
Since you are already talking about the time of investment return, you will not be happy when you invest heavily in mining, and it begins to look like your investment is being sucked away by the very many unplanned challenges that you will definitely face and also since you were planning secondhand miners that will be more prone to repairs and fixing. There is no assurance of investment returns, you may even encounter losses.This may be the better option for you, buy now the value is still low.

### Reply 6:
Yeah, at this point it's better to buy Bitcoin and wait, if you want to build a solar mining farm and still buy Asic miner it's going to cost a lot.Buy a BTC at 16k and wait, if BTC goes back to 59-69k again then you will have enough to build yourself a mining farm with solar panels. I have successfully build my own solar farm in 2021 but for GPU mining and now all I need is an Asic miner.

### Reply 7:
If you want to invest almost 16000 dollars or current value of BTC than you can get almost 350 to 500 TH power to mine crypto and Bitcoin and that is good investment for long term and it can generate good profits too. And if you want to check mining Profitablity and other such things than you can check website that is I am giving link ,<link>

### Reply 8:
This is what I've been preaching these days. Most the coins already mined up.A lot less gray hair worrying about the logistics involved. (especially on entry level)The solar idea still isn't bad if you can cut out all the financing.I don't know how that department really works though in your area of operation.

### Reply 9:
Solar almost never makes sense. Why do you want to do this?Coal is basically solar energy, that was converted into plant matter through photosynthesis. Nothing wrong with using hydrocarbons.

### Reply 10:
Wow that is very long time to just only break even. I prefer use the money to buy some goods to selling on the marketplace.Maybe i can lose my money but atleast....i can learn something how to make money more fast than waiting 11 years mining.

### Reply 11:
The question is how much is your budget for the second-hand miners that you say have 200TH power?If we base it on the current price value of bitcoin (17kplus) with a hashpower of 200TH, you can earn per hour around 12.75$ within 1 week you can earn 89-90$ depending on the value of bitcoin, if you sum it up in a month it will be around 382$ or more if Bitcoin goes up and if bitcoin goes down it will be less than that, this is based on my calculations.

### Reply 12:
I think you can not get the maximum output from any mining rig while powering it from solar power. And the cost to get back the total spend money and also profit from that would be a tough journey. There's also the fact that used rig can be damaged overti<rest of thread truncated>
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    ""hardware_name"": ""second hand miners"",
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    ""hardware_name"": ""6kw solar panel"",
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22022,"Date: 2017-12
Topic: Antminer S9 Temperature
### Original post:
Hi,how much Temp is okay for Antminer S9.Most time, the first of three boards has more temp than the other two. Like 1st = 90, 2nd = 85, 3rd = 85Is that okay and normal?

### Reply 1:
my first is higher then other to 77 71 71..... 90's still in limit i just like mine colder

","[
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10585,"Date: 2017-10
Topic: 2400 watt power Platinum 94 200 240v DPS 2400
### Original post:
hey anyone know how loud this is i ordered one ....<link>

### Reply 1:
By the looks of it sounds like it's going to be an absolutely earshatteringly loud psu. I don't know for sure but three front fans and being from delta doesn't help much.

### Reply 2:
This will be a very loud PSU. Those small fans spin at 15000rpm or more and make a ton of high pitched noise

### Reply 3:
and it won't be platinum as the plat rating is made without the fans.those fans will pull 25 watts each. and that is 75 watts which is 3% so it will be more like 90 or 91 not 94I know this from the ibm 2980 which pulls around 70 watts for the fans.<link> was able to mod them and use optimizer's boards the fans I used pulled 30 watts and were quieter.I run 2 avalon 721's or 2 s9's forgot which is which

### Reply 4:
could you link the replacement fans and ty everyone else i get that feeling to very loudbut couldn't turn down a brand new 2400 w psu for 44 $ free shipping, i have two of a X Adapter Rev:6, I was told should run it ,, there not to bad..<link>

### Reply 5:
<link> of these use half the power and are not as loud. but i use 2200 of 2980 watts on the ibm 2980'sif you use 2200 of 2400 watts on the psu in your link I don't know if these will work.

### Reply 6:
Funny, I ordered one of those also to check out - there's another forum member selling one with screwdowns in the marketplace. He said that the fans are thermally controlled, so if that's the case then it might be a good option - but as others have said, those small fans are brutally loud. I used those same IBM PSU's, and I ended up modding them to use a single thermally controlled 120mm fan which made them MUCH more pleasurable to use. 2400w gives a ton of headroom for my applications, so I'm hoping they're run pretty cool on their own - but keep in mind that PSU's have an efficiency curve, so if you're using too much or too little power, you'll stand to loose a couple % of efficiency.

### Reply 7:
over all best thing i bought in a while or some thing that is worth the money .....

### Reply 8:
wow this PSU is all most not heard all i hear is the A6 fan and my A6 is running @ 3.4 th @ 420 or so , if I set it to 500 it actually hashes like it should and the Voltage actually holds at 12.1/2 ... The PSU is brand new , or smells and feel that way ... so for 44 bucks you can't beat it ..the full kit on Ebay sells for 107 with the X Adapter Rev:5 I'm using version 6 link is below..two of these can power it <link> with out issue two of these without problems <link> or J4bberwock Breakout Board for the 1200 watt psu two of these <link> it's amazing how quite it is ...I'm actually afraid to leave it at 500 now because it hashes @ 4.2 th @ 12.2 volts according to the software Avalon supply's and the fan spins at max speed, it over heats to much for me .. so I leave it just below 450 that seems to be the best all around for temps and speed ...I was gonna sell the A6 i don't think i will now ...I'll post a Screen shot after it hashes two hours i want see if it holds up ..

### Reply 9:
Hi, Having a couple issues with these power supplies. I have a three phase 200amp services and I am trying to run 12 Avalon 741. When I have all of them running I have lights flickering. In my calculations I have plenty of room and I don't understand why I am running into issues. Any input or suggestions would be greatly appreciated. Thanks

### Reply 10:
Why do folks always leave out giving us at least *some* details other than 'it doesn't work...' Ya know, things like what kind of 3-phase? Delta, Wye, Wild-leg (one phase center tap'ed for 120v)?What is phase-to-phase voltage?Are the miners reasonably balanced across the phases?etc.

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17181,"Date: 2012-06
Topic: [.25btc]CGminer Locks up after a few mins. Just... Stops
### Original post:
well first of all wich PSU do you got?

### Reply 1:
What is the error message, if there is any on CGMiner? What does it show just before quitting?

### Reply 2:
Raidmax 1200WNo error message, It doesnt ""quit"" the TUI just freaking Stops...and then a little bit later so does my GPU usagewith BFG miner, the TUI freezes, But i appear to still continue to hash.With GUIminer (poclbm) It hashes away normally, But i dont like GUIminerThankyou all who looked at this!

### Reply 3:
First thing to do is reseat all cards, do it a few times.. You'd be surprised what a reseating can do.. specially if it was a dusty board before you changed things..

### Reply 4:
Clean install of cgminer? Did you remove all the bin files? Are you sure you have the right drivers ( use gpu-z ) and the proper sdk installed?

### Reply 5:
Could you post a SS of the frozen GUI? I'm guessing that maybe a bug ridden version of the drivers and SDK were installed. Also, did you use drivercleaner or something of the sort to uninstall the drivers BEFORE changing the cards?

### Reply 6:
Yeah i think i'll do that, At the moment im procrastinating because it's annoying to disconnect the entire ventalation duct.Yesssiirrriiee indeed i did, And yup, Right drivers and sdk.If you skimmed the opening post, i cleaned all the drivers, used driver sweeper and did a manual uninstall aswell, Heres the photo that you requested, Nothing intresting to see other than my miners desktop<link>

### Reply 7:
Is Crossfire disabled ? If its enabled, try disabling it..

### Reply 8:
The GPU or some other components could be damaged. For how long you had the graphics card ?

### Reply 9:
Obviously disabled, You cant crossfire a 5770 and a 6990 dude.And yes, Just for shits i checked the setting.Do you not realise that i hash Just Fine with GUIminer, And i hash with a frozen interface with BFGminer? I heavily doubt that ANY component is damaged, All of it is <1yr old

### Reply 10:
Which intensity you using in CGminer ? Dynamic ?and which version of CGminer ?

### Reply 11:
Try running it in text mode only to see if you're one of the unlucky ones getting bitten by the windows version of the text interface that crashes (i.e., start it with the -T parameter).

### Reply 12:
<truncated> ....Go look at the screen shot.CG 2.4.2 intensity 5,5,3OhhoHO! The CGminer expert has stepped his foot into my thread, Im truely surprised. I dont think i said this yet, And i guess i should've, When i had the 6990+5830 the same copy of cgminer 2.4.2 worked Flawlessly, Swap the 5830 out and stick the 5770 in (the card is fully functional, Please trust me on that factor, The card was being run as a gaming card in a desktop, I bench'd it higher and higher till it crashed at core 940, So i run it at core 910 to be safe, Also, Overclocks apparently make no differance in the crash frequency)So ckolivas, Just add the -T to the end of the whole string? heres what im using "" -o <truncated> -u ########## -p ##### -I 5,5,3I'll head over and try it now

### Reply 13:
Thanks everyone for looking at this

### Reply 14:
I had a similar random lock up problem with cgminer 2.4.2 when I added a new ""used 5870"" - frustratingI resorted back to an older set of ATI drivers and cgminer 2.4.1 - it works now

### Reply 15:
Locked up almost immediatley

### Reply 16:
ATI Driver Date: 11/09/2011Ver: 8.920.0.0I should mention some physical intervention in there may have helped my issue. eg; changed cables/reseated card/talked dirty to itmaybe try cgminer 2.3.1 even. good luck

### Reply 17:
are you getting near any power limits ? Do you have other ""appliances"" on the same breaker ?just guessing at this point

### Reply 18:
Wild flailing guesses are glady supported.No i am not, Yes i do, But those ""appliances"" are on 24/7 and the constant load on the powerline is quite low, I could probobly add another 200 continuous watts without tripping the bre--- Oh... I just looked, I have a good 400W of avalible constant 24/7 energy avalible for use. How do i figure that? I accedentally left a 400W lightbulb on, on the circut for i dont know how long... Atleast a week now XD and i've seen nothing unusual... OFF YOU GO BIGARSE LIGHTThe 6990/5770 rig and my gaming tower are on compleately different circuts, Fwiw

### Reply 19:
You could grow some great tomatoes with that bulb. yeah, that's it !getting fuzzier by the post.Cheaper older PC power supplies, when pushed, will die quick and might show odd, deteriorating performance before they quit. Have you recently started ""pushing it"" on both power supplies <do they exhaust hot> or have you been mining for awhile with them. No outrageous overclocks on the cards ? Strange the problem spread to the other rig like a virus. I hope you find the issue, soon. I can imagine how frustrating.

### Reply 20:
Well ofcourse the PSU air is warm , But definitly nothing stressfull, They just run 24/7. and t<rest of thread truncated>
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    ""hardware_name"": ""5770"",
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    ""hardware_name"": ""6990"",
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    ""hardware_name"": ""5830"",
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11211,"Date: 2022-10
Topic: Bypassing S9 power supply
### Original post:
hello all, has anyone heard of bypassing the power supply and just using DC power to run a miner? we are able to adjust the wattage the S9s can run on.. if we turned an S9 down and had a few hundred watts of solar panels "" without a battery bank"" would they fire up when the sun was giving them enough watts?? I know there is a lot more involved with making the power ""steady"" but I am just wondering if I could spark some guy who know a little more about this than I thanks ALL..

### Reply 1:
Could it be done that way? Yes.Should it be done that way? Probably not.You need 12V and at a bit more then a couple of hundred watts per board to run a downlococked board + a few watts to run the controller.And you would have to make a custom power supply to get the panels to put out a clean 12V.Would probably be better to run a stock inverter on the solar to get to 120 / 240 AC then plug that into a UPS and then that into a regular power supply.That is all off the shelf stock components. You could probably build a custom setup to do what you want to do but it's going to take a lot more time and effort and since it's custom you will be doing all the troubleshooting.If something is not right on the custom setup as the sun moves and power changes you could be seriously underpowering or overpowering the hashboards. And that is just going to damage them.-Dave

### Reply 2:
The control board and the hash boards couldn't care less where the 12V DC comes from, so ya, you could bypass the miner's PSU but then you will have a lot of issues to deal with.You will need to stabilize the DC input which can't happen if you want to supply the miner directly from the solar panels, and then two, you will need something to attach those 6-pin connectors to, you can't just a run couple of wires from the solar panels and attach them to the miner.So technically, this can be done, practically, it seems like a terrible idea.

### Reply 3:
thanks for the reply. here we GO! I'm trying it. I did plan on using the aw3p or ""something similar"" to power the computer.. just thinking most solar setups are going for AC power.. when they already put out DC power and possibly ""bypass"" the inverter. so if there is a charge controller that is stable enough and can handle enough amps I should be good if the panels are producing enough amps. ""in thinking.. I planned on powering the computer with 110v ac. if that changes the game?

### Reply 4:
my partner buysolar and i try 2 or three ways to do this.He has installed and designed solar systems for 22 years.We could not get a stable setup without batteries and inverters.3 venders claimed they had exactly what we wanted and all three power devices could not work as desired.it has been two years so maybe someone is selling something that will work for you good luck

### Reply 5:
ok ok.. yea nobody is selling me anything.. i was just thinking ""what if?"" I was given a burned up S9 and the computer and only one hashboard worked. and I noticed the power supply wouldn't even break a sweat so I unplugged the two bad boards and it still does fine. I am going to see if its just the one port for a hashboard working on the computer?? Im not sure if they all will run like that. thanks for the reply!

### Reply 6:
this is a great idea! Mining chips are fundamentally low voltage DC devices, just like solar cells.As others have said though, it will require some extra equipment in addition to the solar panel.Solar panels have a maximum power point for every different level of light shining on them. Solar Inverters / Battery chargers will have Maximum Power Point Trackers (MPPT) in them to adjust the solar panel output voltage and current to stay right in this maximum power point. Outside of the maximum power point you'll see dramatically lower power output. Sometimes even crashing to zero power (not so good for mining).Basically this means that if you hooked up a big enough solar panel to your miner via a 12V DC regulator, it _might_ work for a little bit. But as soon as a cloud goes by or the light changes in any way, the panel output power could crash and shutoff/brownout your miner. At best it's going to be *very* inefficient, and likely very unstable.When you're charging batteries with solar it's a relatively simple task of regulating the charging current to get into the solar panel's maximum power point. Batteries are fine with reducing the current -- they'll just charge slower. Not so muc<rest of post truncated>

### Reply 7:
wow that what was I was looking for! thank you! so I'm thinking of maybe having a small battery bank just to keep the power steady ""as possible during the day.. then just have a 12v timer to shut it down at sunset or near. what ""device does that a ""12v ""speed controller"" like for a motor? am I on the right track? thanks again for your reply I'm going to look into that firmware for solar! that is beautiful!

### Reply 8:
Are you talking a<rest of thread truncated>
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20712,"Date: 2015-10
Topic: Antminer s3 and s3+ stop mining after route change.
### Original post:
I recently had an issue with my internet service and the first thing that was changed out was the Arris NVG589 router for a NVG599 router. Since that has been changed my S3 and S3+ miners will not mine. I have full access to them on the IP address I assigned them. The problem seems to be with the new router and I can't figure out why these guys won't mine. my local p2pool service works along with my bitcond.exe program. All that is up and running and communicating with other IP addresses on passing transactions or seems to be passing transactions. my miners have a blinking green light the yellow light is on and there is no Red light.What I did notice is the IP addresses for the router is divided into two. the 2.4 GHz IP address starts at 198.162.1.64 and goes to 198.162.1.253. The 5 GHz radio channel starts at 192.168.1.1 and ends at 198.162.1.63 I log in to the router and disable the 5 GHz and try to config my router on the 2.4 Ghz using the 192.168.1.1 but the router tells me I can't because it is used by the 5 Ghz radio even after I have disabled that setup.So because I can't change the gateway to 192.168.1.1 and it is set to 192.168.1.254 with a IPV4 broadcast of 192.168.1.255 <rest of post truncated>

","[
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  },
  {
    ""hardware_name"": ""NVG599 router"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""S3 miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S3+ miner"",
    ""hardware_is_owned"": true
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]"
22806,"Date: 2018-11
Topic: S9 MOTHERBOARD DAMAGED
### Original post:
This is one of those cases where a picture is worth a thousand words...

### Reply 1:
buy removing this damage hashboard machine will turn on?? other two boards are working??? and warranty??

### Reply 2:
Is not a transistor. Is either a resistor or capacitor. Look at the same part on a good board and you will see a very tiny component number on the PCB next to the part, something like R123 or C123. If 'R' then is a resistor, if 'C' then is a capacitor. Then look at the good component itself and you should see a tiny number on it identifying the actual mfg part number. Search for the number on Google using ""resistor (or capacitor) <number>"" to find a supplier for it.Just disconnect the ribbon cable and power from bad board and miner will run just fine with just 2 and even 1 hash board.

### Reply 3:
Thanks very much for your help.I'm going to remove the hashboard and try to turn the machine on.I'll keep you all posted.Thanks again

### Reply 4:
Hello All,I bought a new S9 machine from bitmain. It worked fine for three months but then the machine shut down.Checking the motherboard, we found that one transistor was damaged.Does anyone know what the transistor model is in order to replace it?The transistor is located next to the three capacitors blue and grey?Thank in advance for your help.

### Reply 5:
Here you go! <link> pointing with the pen the damaged component.

### Reply 6:
If you have any other dead / scrap boards you can take the part you need from there instead of buying it online.

### Reply 7:
Honestly, the color of the part is brown or orange so it is not a resistor if you can check the hashboard circuit diagram it should be a C123. Resistor color is black, you can check the image below as a sample of resistor and capacitor.According to OP's image, I don't see any name under the capacitor unless if you have hashboard schematic diagram?@OP I think if you don't have scrap hashboard you can try to find capacitor in other devices like mobile phones just make sure its the same color and size and you must have a multitester to check if the board is shorted or not after you change the capacitor just to make sure no other components can be damaged due to shorted capacitor.

### Reply 8:
It's a capacitor, and based on the location, size, and big connection to the ground plane I'm guessing it's a filter/noise capacitor and not a part of the RC current sensing system. If you're good with a soldering iron and some chip-quik I'd say try removing it, then see if the board works. If it does replace it with a 3.3-4.7uf capacitor, that should provide enough filtering to reduce noise on the board.

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4007,"Date: 2019-08
Topic: US Group Buy
### Original post:
We're going to list a private group buy for the forum that will be a zero commission sale. Even though 2% isn't much we're hoping through volume we may be able to get some good pricing on units and reduce duties/tariff this way.What I need is feedback on unit most desired then we'll get pricing, shipping estimation, and start collecting funds if the interest is there. If possible we can look and see what Malaysia units might be available if s17/t17 is something people want.

### Reply 1:
If you can do this. I could take three to five maybe more. They would need be s17 pro and legally avoid trump tax. We have 40 kwatts that is more like 15 units. Next choice would be m20 . Also s17 no pro. These three are most efficient. Note I am on road no pc access.

### Reply 2:
Any interest other then me?this is the 45th model for 1830 + 111.83 = 1941.83 due in december<link> better then this from bitmain a t17 for 1855 + shipping<link> of course the bitmain s17 pro 50 t due in dec is 2969 plus shipping before trump tax.<link> like the wahtsminer 20 if it can ship from Malaysia is best choice.Then the S17 pro would be next choice.

### Reply 3:
I'd be interested in 2 or 3 depending on the price and model.Whatsminer m20, or Avalon 1066 would be my preference. $3000 for 50TH seems a bit too much.

### Reply 4:
We cannot get any Bitmain units in a reasonable time frame, Malaysia or not.Best opportunities we have for a larger group buy is Innosilicon and Canaan imo but for impact on duties will need to look at 500 unit group which seems improbable, so we'll ask this thread closed.

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14612,"Date: 2012-11
Topic: Spent a long afternoon with my Air Compressor
### Original post:
Amazing how much dust builds up after a year...I'm shutting down my machines, one by one, starting with the lowest MH/$. I might re-build one or two efficient machines, but that might not be possible given the hardware I have.Chances are, I'll be spending the next 2 days with my air compressor and a damp cloth trying to make these GPUs/PSUs/etc. look as pretty as possible before I list them on Craigslist and/or eBay.I did 3 machines already, which is only 6 of my GPUs.I lived through the $1.50 BTC days and was barely breaking even -- but back then there was no ASIC mining on the horizon. I'm really, really going to miss BTC mining. I've been doing it since May 2011. It's been a blast. The only time I hated it was when a storm came through and shut off my machines (requiring me to waste 20 minutes restarting them all) -- but even then, I bought a bunch of keyboards & mice so it would be easy to restart each machine. So even storms haven't been a big deal for the past several months.I'm having a lot of fans die on me though -- GPU fans as well as $16 Holmes personal fans. I probably own about 12 of the latter, in various stages of worn out. I'll be stuck with many of my video cards b<rest of post truncated>

### Reply 1:
There are tons of 58XX fan replacements, not all of them cost an arm and a leg either, that you can easily replace the stock fans with.You're one of the few names I remember from my old mining days (I've been gone a long long time, $0.34/kWh is not friendly), and I didn't particularly like you, but it is a harkening to times I quite enjoyed, so I tip my hat in salute to end of an era.I'm personally very interested to see where ASICs lead us, so I'll be around for a bit myself (and why I'm back after all this time).

### Reply 2:
AngelusWebDesign, you sound like an old timer now. Best of luck!

### Reply 3:
I've got to ask, if you're selling 18 GPU's + other misc hardware, that should bring in at least $1500... why not buy an ASIC and keep the tradition going?

### Reply 4:
Well, I did spend a few days reading up on the pros/cons of ASIC pre-orders, thinking about it, and figuring out the best position on the issue.My decision: ASIC is too risky right now. ESPECIALLY for pre-ordering non-existent hardware (yes, that includes hardware ""in development"")1. No final hardware has been shown off; furthermore, there have already been many delays to the ship date.2. One or more companies could be a scam. Bitcoin is all about making easy money, and it HAS attracted many scams and scammers in the past.3. Recouping one's investment might already be impossible, unless you're in the top 5% of the wait list.4. ASICs are only good for ONE thing. As gutsy as buying 18 GPUs was, it wasn't really all that risky. They can always be sold to gamers at any time. If you can't make back your $1300 Single due to skyrocketing difficulty, you're screwed. No one's going to shut off their ASIC. No one's going to repurpose a Single into a gaming rig. If someone quits and sells his Single, guess what? The buyer will fire it back up and it will be back on the Network. When the difficulty goes up, it WON'T be coming down...ever.5. The whole ASIC thing gives me a bad feeling -- I mean<rest of post truncated>

### Reply 5:
Is your electricity is that expensive that on 5.5 GH/s you could only make $1 a day?Also when you dusting off with air compressor, the best thing is to turn on your vacuum and suck in all the dust that comes out. I try to do it every week to all of my computers.

### Reply 6:
Interesting theories and thoughts Angelus, thanks for sharing.

### Reply 7:
There's no way I'd have done the dusting indoors. It had to be done outside! It's not too cold out, anyhow. High of 70 today here in south-central Texas.Electricity here is 8.8 cents/kWh.I think a lot of people aren't good at interpreting electric bills -- which is a whole other topic. Don't worry, I'll post that later

### Reply 8:
Best post I've seen yet on the current and near future of mining. Came to the same conclusion and dumped 8 GPUs last month on ebay and got over 75% of original cost back. Check out ebay now...some 6950s standing at 80 bucks! The entire mining scene has become sketchy and almost silly. The ASICs may or may not turn out to be dependable and outstanding in many ways...but as it stands now, it's just as likely that many will be scammed or stuck with <truncated> equipment by amateur industrialists that fold not long after making couple million bucks.But if ASICs do ending working as promised, it's even worse. Like stated above, this will become a plutocracy where a few well-heeled miners will drive the difficulty stake into the heart of all the small miners like myself. I'm out of the game now and kind of relieved. It was a lot of fun and very challenging but time to move on to a new hobby. There was never really any money in it for small timers like me <rest of thread truncated>
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21076,"Date: 2016-06
Topic: [help]having 9 to 8 hours round times on slush pool
### Original post:
im new in mining i dont get why im getting 8/9 hours to find a block and , why my confirmed rewards start to decrease? if they are confirmed why are they decreqasing? i had 15$ now i have 14.79$.. i want to understand this.. ty

### Reply 1:
Did your BTC reward decrease? The rewards are in BTC not USD, the BTC-USD rate changes every second. As for the 8-9 hours per block that is the luck of the pool.

### Reply 2:
oh yeah lol im so stupid.. ty bro.. what about the times to find a block is that noraml ?

### Reply 3:
It's luck, I think slush should average 7-8 blocks per day. A lucky day would be more, an unlucky day would be less.

### Reply 4:
should i stick in slush pool? or every pool is the same?

### Reply 5:
Stop plastering questions all over the place.Slush pool thread is here, use it: <link>

",[]
22755,"Date: 2018-09
Topic: S9 with no Fans
### Original post:
Hey all, I've googled this and found a few responses, but not one that has a solid answer on this question, so here is my scenario and question.We are looking at ordering just over 2000 S9s. We want to place them in mineral oil, and we want to remove the fans or at the very least have them not running. I believe the way that the firmware is setup, the unit won't run without fans. I have read that there may be a way to trick the unit into thinking its attached to a fan by rejigging one of the cables that is plugged into and powers the fans, but comments have been made highlighting that the unit will still want to draw the same amount of power, despite not powering the supposed fans.A really creative answer was to cut the blades of the fan off, but again, still drawing power to spin the fans, so that is not optimal.What I'm looking at is a way to either:a) run the S9 without fans and without taking that additional power that the fans draw.orb) run the S9 with the fans, but disable them so they don't take the additional power that they draw.Is this possible and if so how? Would much appreciate your advice and input on the matter.

### Reply 1:
The solution for you is worth money.If you are building a 2000 rig setup offer a bounty for the answer to this problem.

### Reply 2:
Willing to hire someone to do it and help us set it up if it can be done. Don't have the money, seeking private funding for it. When I have the money, will gladly pay someone to help us out for sure. Just getting the planning done so it can go into the document that will entice the people with fat stacks

### Reply 3:
Spoofing the tach signal is almost trivial. I could conjure that circuit up over a weekend and have 'em mass produced within probably six weeks. The real question, which this is the first time I've heard of it, is if the S9's controller actively monitors power draw on the fans. If that's the case you'd want a dummy load of some kind, which becomes non-trivial since those fans can pull 30-40W at full tilt. If the whole thing is immersion-cooled, a dummy load becomes easier to pull off because passive cooling requirements are relaxed.

### Reply 4:
The Antminer does not use power draw to monitor the fan, it uses a tach signal from the fan. It is relatively easy to build a circuit that emulates the tach signal - here is one example: <link> hope this helps - looks like you have a nice project in the works!

### Reply 5:
My partner and I are in Sydney, we re building a farm that runs via a 2 phase cooling setup, like you we need to removed the fans on the S9.I have found a guy who can create custom firmware and load in to the machines.This means your machines will run with no fans but and can overclock to about 19th for a 13.5th machine.Where are you located?

### Reply 6:
19Th sounds like music to me.Is this only liquid cooled, or... ?Can you share this firmware to us?

### Reply 7:
Seems odd you would be willing to waste a ridiculous amount of money oil cooling these machine but are worried about a little extra power draw from the fans.Once you have these all immersed and realize you have to physically work on units daily you are going to really regret wasting all that capital when they run just the same air cooled.

### Reply 8:
Hi,You solve your problem of fans ?

### Reply 9:
You can run the S9 without fans simply by modifying bmminer.sh, I don't know why you would mass produce some fake 555 timer circuits to do the same.Also natively a 13.5 machine won't clock much higher than 18.2 and that's ridiculous power draw anyway.

### Reply 10:
If you run my firmware the 880v and don't tweak the hash-rate it will do exactly what your trying to do. It will run without a fan check.<link>

### Reply 11:
Hi,And do you mean bmminer.sh ou bmminer.bin?Do you know what code we need to change?Hi,With your bmminer bin there is some fee for another mining pool?

### Reply 12:
No, taserz is not stealing any hashrate with his bmminer bin.However, you should definitely learn how to compile it yourself so you can customize it however you like.

### Reply 13:
Why it says there is no temp control display, that cannot be changed?

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17085,"Date: 2012-03
Topic: BAMT won't OC anymore
### Original post:
After a crash on one of my 58xx cards due to a bit too high clock, now BAMT refuses to set clocks for the high usage profile. Infact, the high usage profile memclock got applied to idle :/Had to disable the GPU because @ stock voltages it's running hot and slower than an undervolted card :/Any ideas what's going on?

### Reply 1:
Higo to /bamt/status/active and delete files to enble GPU overclocking.It work for my!

### Reply 2:
thanks, but there is no /bamt dir ...Now this happened to other GPU, no crash involved or anything, all of sudden just overclocks are gone!noticed because hashing rate dropped a bit on the cluster ...

### Reply 3:
The file is <truncated> the file that is in there for the GPU that locked up

### Reply 4:
now after failed underclocking it reports 0 GPUs >_< ffsand no files in ACTIVE/** EDIT: Got it fixed

### Reply 5:
how did you fix it!

### Reply 6:
It was a simple boot failure, X didn't start automatically and as i were remote i didn't notice that at first.

### Reply 7:
Wierd, X was started on mine, a coldreboot command seems to of got it working again tho , Thanks

### Reply 8:
I know that problem too. Reboot on SSH console doens't work for me, cause X doesn't somes up. I have to reset, then it works. It's only on one RIG out of 3.GreetzNetworkerZ

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20383,"Date: 2015-04
Topic: Ready to Start Except One Thing......
### Original post:
Also to add when i started the cgminer exe it told me that the block erupter needed WINusb with Zadig/ Thing is i changed the software to that on a Rosewell 10port USB2.0 hub and then it said nothing was detected, so had to scrap that hub; and finally i could not connect to BTC guild wrong URL (Perhgaps I am inputting the info incorrectly possibly).this is what i have cgminer -o <truncated> -u BTCusername -p BTCpass --rock-freq 350

### Reply 1:
I can't for the life of me get the bat file to start up with the latest cgminer software... tried all sorts of -o's and -p's I have 6 R box Rockminers 110-130/Ghs each connected to my comp (which has internet via wifi) via USB and Powered by a 1000watt PSU I'm using BTC guild as my poolI want to control the freq of each miner ( i have made 6 worker names in BTC guild website) i.e. -Rock-Freq 350?So....What would I exactly type into the Notepad, that I would then save it as ""StartMining.bat"" (any file)--save it to the cgminer folder then double click to run.Halp!!!

### Reply 2:
This is a guess but I'm thinking on of the : need to be deleted. I bolded where it is in. But I have never used 2 in a row.I'm thinking it should be <truncated>

### Reply 3:
IF that is the mistake everything else checks out right?

### Reply 4:
I cannot say I have not used a rockminer box. That is only thing I could point out for sure is a error.

### Reply 5:
Alright success on connecting to the pool that Issue is over....Now the issue/question. What is a suitable USB HUB that can handle 6 rockminer Rboxes... because I tried this hub <link> and CGminer was telling me to run Zadig on it to switch it to WinUSB...which i did then it just became totally undetectable and thereby useless. If i had to guess i would think that this particular hub isn't compatible with the WINusb driver software?!?!?

### Reply 6:
That sounds like same driver as the block erupter. I could be wrong someone please say something if I am.If they are using the zadig you might look at a old thread on the forums that compared usb hubs. The did a great anlaysis on hubs for the block erupter days. I would not think powered hub is needed with the Rboxex, but I have not used one myself.

### Reply 7:
Ah okay, and I gathered more info on me problem.So basically its saying this over and over when using the rosewell 10 port hubBlockerupter USB init failedUSB open device failed, err- 12You need to install WinUSB driver for - BET Device 1:6And associate - BET device 1:6 with WinUSB using zadigSee read me .TEXT for helpBlockerupter detect <1:6> failed to initialize <Incorrect <truncated> USB init failedUSB open device failed, err- 12You need to install WinUSB driver for - BET Device 1:7And associate - BET device 1:7 with WinUSB using zadigSee read me .TEXT for helpBlockerupter detect <1:7> failed to initialize <Incorrect Device?>USB init, open device failed, err -12You need to install WinUSB driver for - AMU Device 1:6And associate - AMU device 1:6 with WinUSB using zadigSee read me .TEXT for helpIcarus detect <1:6> failed to initialize <Incorrect Device?>USB init, open device failed, err -12You need to install WinUSB driver for - AMU Device 1:7And associate - AMU device 1:7 with WinUSB using zadigSee read me .TEXT for helpIcarus detect <1:7> failed to initialize <Incorrect Device?>AMU prompt goes up to 1:9 (and i think the BAT one)

### Reply 8:
Alright I think I ruled out the hub because exchanged the rosewell with a 49 port Eyeboot hub and cg miner still giving me the above prompts

### Reply 9:
why not contact crazy guy buy a rasp pi and have he program it with an sdcard. he sold 6 boxes to me last year along with a preprogrammed rasp pi. i will find a linklook at this thread<link>

### Reply 10:
Noted Philipma I'll check it out for sure thanks!Right now I just gotta figure out how to maintain connection to BTCguild's pool I have a feeling I might be typing something incorrectly and I know its not my BTC username mmmmmm......

### Reply 11:
I finally got it fixed with the Zadig on the Rockminers themselves then, i connected to BTCguild stratum- it was running fine for a few seconds possibly a minute and then it stopped taking shares from BTCstratumNetwork Diff Changed to 47.9 GStratum connection to pool 0 interrupted Pool 0 Stratum share submission failurePool 0 <truncated> not respondingThis is what I got in my .bat:cgminer --icarus-options 115200:1:1 -o <truncated> -u BTCusername -p 12345 --rock-freq 350I'm close to figurin this out

### Reply 12:
drop the freq to 330 been a while since I ran them. not to be stupid but how are you powering them? 1 pcie wire in correct?try running 1 of them at freq 330they need a usb and the pcie connected.

### Reply 13:
Got it working im successfully mining my first coins through a different pool not BTCGuilds (I just input another pool type and it worked) I got a Rosewell 1000 Watt hooked up to 6 R-Boxes i have the<rest of thread truncated>
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    ""hardware_name"": ""R box Rockminers"",
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    ""hardware_name"": ""1000watt PSU"",
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23053,"Date: 2019-08
Topic: best firmware to mine in oil?!
### Original post:
Hello guysi am about to run 3 s9j antminer asic miners in oil, but i stuck with two different 1. I need a firmware which can modify fan speed to make it work in oil(otherwise it wont bootup because of low fan speed).2. or I just need to buy fan simulator to fool control board! ( which in this case i need original antminer recovery .zip file that I couldnt find in any site!)so please if anyone did that or have the recovery file would helpout alot./thanks

### Reply 1:
You can try to use Braiins OS you can disable fan or disable the sensor scan found it from this link below. - <link> can find the Official thread from here <link> I heard fan simulator right now for latest antminer will not work it reads as shorted(short circuit) if you use the simulator.

### Reply 2:
Why do you need to change the firmware? For OC purposes?Also, just an opinion but why not use the fans to cool the radiator that has the liquid running throgh?Would love to hear more about the build you plan. What are you going to use as a holder for oil?What plans do you have for a fail-safe for the pump, let's say as if it fails the oil will get hot, although not sure if it can catch fire from thatAlso, why mineral oil and not silicon oil, cheaper and better? I believe it is called <truncated> products -> <link> silicon oil: <link> this helps and look forward for some photos of your miners in liquid.Also thinking of putting my t2t-30t (if anyone did this with success please do let me know) in liquid as he is noisier than my s9's...

### Reply 3:
Thank you for your replies,actually ive got problems with changing firmwares, i used this instructions to change the firmware but it stocks in recovery mode and wont upgrade via web interface! which is different topic.and yes i have to change the firmware because when you put your asic miner in oil , the oil decreases your fan speed so mining will be stopped cause of this fault!but there is another way which cost about 5 bucks to use fan simulator! which was not a bad idea , and I used it and it works smoothly.its two days now and temperature is about 70 centigrades and mining 17th/s with stock bitmain firmware for s9j 14th/s. i havent install the thermostat to stop the hole system if something goes wrong. but i highly recommend to do so cause it could be really dangerous.I will upload some pictures later.and at this time I really could use some advice if anyone done this.the oil I used was mineral oil, its odorless, colorless and tasteless but i have concerns about affect of the oil on the silicon paste. I havent heard about the oil you mentioned but i will be do research about that! thanks

### Reply 4:
You should follow the guide for installing BraiinsOS, its basically just move a jumper (jp4) and insert the microsd card. Preparing this card might be the biggest challenge to some (windows) users (its just a ""dd"" for everyone else).You turn the miner on and it will boot bOS from the card, you can leave it running like that, or you can permanently install it into the controller's nand later if you like it with an option from the web ui.Once running there are various parameters you can change, you can run it without fans at all, or change the dangerous temp zones, etc. Pretty much anything you wan't, including disabling damaged sensors.

","[
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    ""hardware_name"": ""fan simulator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""t2t-30t"",
    ""hardware_is_owned"": true
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]"
21108,"Date: 2016-08
Topic: [GUIDE] Configure your miner software as a service under daemontools
### Original post:
Thank, great guide.

### Reply 1:
I was setting up a new RPi today with the latest Raspbian Jessie Lite. I was thinking about installing ramlog but I noticed posts from people that had problems with using it on Jessie.So instead I installed this alternative RAM disk log solution:<link> a very simple install and seems to work well.

### Reply 2:
I run my rigs completely headless. I want the miner software to automatically start at reboot or when it crashes. I also want a few days worth of logs for troubleshooting, but I don't want the logs to chew up too much disk space and I don't want to wear out the SD card in my Raspberry Pi.There are a number of ways that people autostart their miner software under Linux. But some of the techniques are really not very clean. I'm not interested in running the miner under ""screen"" and having no reasonable log history. When I want to check on my miners, I prefer to a web front end or a script that calls the miner software's JSON API.So what I've done is use daemontools from D. J. Bernstein to manage the mining software. It's a simple and awesome set of tools that reminds me of ""launchd"" for the Mac, but better.If anyone is interested in going this route, here's how to setup cgminer (although any mining software should work) under daemontools.Install <truncated> apt-get install daemontools-run daemontoolsCreate the directories for the run and log scripts:Code:sudo mkdir <truncated> mkdir <truncated> the service scriptsPut the following script in a file called ""run"" in the <truncated> <tru<rest of post truncated>

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    ""hardware_name"": ""Raspberry Pi"",
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23366,"Date: 2020-12
Topic: CGMiner- Bestshare
### Original post:
Hi AllI am trying to get my head around the bestshare report on CGMiner. I understand the figure given is the best share accepted in that particular instance CGMiner has been running. What I want to know is, what is the target share? If you get over X do you solve the block? Is the Bestshare related to the Difficulty shown?CGMiner shows:Diff"" 18.7t, my Best Share is 2.66m. I am solo mining with minimal power as a learning process, not expecting to gain <truncated>

### Reply 1:
The bestshare you see on your Cgminer is the share that had the highest difficulty value since your miner came online, target and difficulty represent the same thing in a different manner, the lower the difficulty the higher the target and vice versa.Think about a scenario where you are blindfolded, I give you a box that has 1000 small pieces of paper, each has a number on it starting from 0 to 1000, I will tell you that if you pick any number that is smaller than 900 you will win the prize, in this case, the challenge will be very easy and thus the difficulty is very low while the target is very high.On the other hand, if I want to increase the difficulty so that you can't win easily, I will say the number you pick has to be less than 5, so lowering the target increases the difficulty as it's more difficult to pick only (5,4,3,2,1 or 0) as opposed to picking any number from 900 to zero.So the lowest share has the highest difficulty, your best share is the lowest one which is also the most difficulty and the one that was the closest to solving a block.

","[
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]"
3847,"Date: 2015-05
Topic: [www.miningforge.com] NEW BlackArrow 120G X1 150$ - A1 1030Gh/s 1350$ Groupe Buy
### Original post:
A1 CoinCraft 1030Gh/s High Quality Cooling system immediate shipping PRODUCTION 100pcs/day: BTC2.25 BTC 1350 USD <link> Specifications:Hash rate : 4 modules work on 1T/SPower: AC input 1000 W/H Size: 480*176*350 mmGross weight: 16KgNoise: less than 52 DBFan size: 12CM*2Chip quantity: 32PCS 28nm ASICOverclocking parameter:1000Mhz +The mine pool rate: not less than 1000GPackage includes: 1000G Miner*1 PWM Cable *1 UTP Cable *Real Hasing Rate:<link> Description and pictures: <link> Available immediately:A1 CoinCraft 31.25Gh/sBlack Arrow 120Gh/sX1 BlackArrow120Gh/s X2 BlackArrow 250Gh/s<link> introduction:Who is Miningforge.comWe have started as IC's reseller in 2013 with Avalon First Generation moved on to A1 and now BlackArrow, we have started manufaturing our own miners this year due to IC's prices going MAD We are highly experience in IC's therefor we only work with Best Grades IC's.We are located in Hongkong/China.Fine out more about us on our website: <link> Factory: <link> also offer Housing Service:Start Mining Same day we receive paymentMining on your Wallet immeditely<link> Service description via this link: <link> are 299$/month for 1000W unitIncluding Electricity, 24/7 main<rest of post truncated>

### Reply 1:
do not buy from blackarrow, they do not deliver any products and they do not refund.they are one big scam.i will post this in every thread where blackarrow is mentioned until everyone gets their refund or miner with compensation.

### Reply 2:
file a report with the HK police, consumer council and your local police force. The timefor asking for a refund past months ago...

### Reply 3:
Holy necropost batman.

### Reply 4:
Well worth it.

### Reply 5:
hahaha yep!

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    ""hardware_name"": ""Black Arrow 120Gh/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""X1 BlackArrow 120Gh/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""X2 BlackArrow 250Gh/s"",
    ""hardware_is_owned"": false
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]"
16569,"Date: 2023-08
Topic: Bitcoin mining researchers claim new tech ups winning hash chance by 260%
### Original post:
<link> firms technologies are being touted to give an uncatchable advantage using AI and SHA-256 optimization, and while QBT does not plan to open source its patented methods, Gardin said QBT is considering different options to take its solutions to the Bitcoin mining market.This could include subscription, licensing, forming a joint venture, or outright purchasing the company and its associated technologies.And I'm skeptical. If it was so great then they would be using it instead of trying to get other people to use it (and pay).

### Reply 1:
If I get this right, they build their algorithm basically by trying to find patterns to past accepted hashes. How do we know if that is reliable, or if there is a pattern to begin with? Their claim that the algorithm can predict the future hash is also quite unbelievable. I'll wait until some miners try using it and see how exactly it work. You're right, it sounds just full of bullshit for now.

### Reply 2:
Alas people have been reporting similar bullshit for the last 10 years.It's fake.... and just in case you want it to be true ... If it is, then all the financial systems in the world will all come crashing down, since they use SHA256 also

### Reply 3:
I wouldn't say it's bullshit/fake claim immediately since recently AI manage to further optimizer sorting code/algorithm[1]. But since they don't plan to open source it, i would raise my skepticism and wait for verification from other expert. And even if it's true, it could lead to another AsicBoost scandal[2].[1] <link> <link>

### Reply 4:
Okay lets examine the claim.A 260% boost means a 100 th machine now does 360th.as 100 percent on 100th is 200thand 200 percent on 100th is 300thfinally 260% turns 100 into 360th.Soon-if you develop that you find one large mine and cut a deal. You dont do anything else.The mine whales and you whale and fuck everyone else.

### Reply 5:
It's even simpler than that As phil said, a 260% boost means 100th -> 360thOr in other words 100%/360% of the work. i.e. 28% of the hash.i.e. they can do the equivalent of the sha256 hash in 28% of the <truncated> removed the need to do 72% of the hash.Yeah that's not gonna happen.As for going on about AI that most people seem to have no idea what they are talking about,since they forget what the 'A' means but anyway, the sha256 hash is not some ""complex algorithm"" that most people seem to copy past that everywhere,it's a very simple hash re-ordering the bits over and over again.So if you've found a flaw in it, then you've broken all the financial systems that use sha256 also You go girl!

### Reply 6:
just a patent application, no details provided. also, looks like a crap company. they been shilling this idea since at least 2021. <link>

### Reply 7:
Another round of ""Bullshit Bingo"", I miss the word quantum in it, to make it complete.People tend to fall into any type of get rich quick writing, as long as it is to complicated for them to understand it.

### Reply 8:
I'm more than skeptical, especially because the incentive for these people is to get funded.What does that even mean? Did the journalist get it right? Random searches are the only method if the SHA-256 function is not broken. I guess if somehow you could coordinate the machines you control so there is no random duplicity in blocks + nonces... But I'm not an expert in mining.The claim of optimizing the ASIC, etc. - well, good luck competing against Intel, etc.

### Reply 9:
More of buzzword bingo.But, they are going to get a bunch of gullible people to throw money at them for their new process.Question -> Magic -> Answer But we can't tell you what the magic is or what it does or how it works, you just have to trust us.How to get rich by sending me money:<link>

### Reply 10:
yeah it's like i said originally, if it's go great then why aren't they using it themself rather than trying to sell it in some type of black box?? the sad thing about all of this is how cointelegraph doesn't really seem to do any type of due diligence and just puts this type of crap out there where less informed people might actually believe that kind of stuff. no one here will though. i guess cointelegraph isn't as solid as i thought. if they let people write crap like this....

### Reply 11:
A bit OT, but cointelegraph has never been a great source for information. They really do put out a lot of articles that are 'less then legit' so to speak. But they do put out so much that the really bad ones get lost in the pile of other things they published.Anyway. back to this. The black box to make things better scam is older then BTC / the internet.But snake oil salesmen have been around for 100s of years.Yet another youtube link: <link> goes along with the miracle device to put in in your gas tank to get 200MPG.-Dave

### Reply 12:
maybe it was a planted article that was really paid advertising. either tha<rest of thread truncated>
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23642,"Date: 2021-08
Topic: Avalon 851s and 852 firmware help
### Original post:
Hello,I have set-up a A852 using the Avalon controller, network and pools are all set up correctly and it hashes fine. However, when I connect my A851s on its own to the same controller, it just says failed to connect.On CGMiner Status only my A852 shows up, if it is a firmware issue, I can't find anything on canaan's website only stuff for their newer models, any help would be appreciated, I attached my API log for when I connect both units. Is it not possible to connect the different models on the same controller? Thanks

### Reply 1:
The different Avalon models MUST be on their own controller!The reason is simple: The different models all have different command values and more importantly different firmware. When upgrading the MM firmware the update would be applied to all miners attached to the controller which would be a bad thing because the 851's or 852's would think they are now a different model.

### Reply 2:
So I got this 1x 851s brand new out of the original box from a forgotten package at the warehouse I work at, the other 3 I have are 1x 851 and 2x 852 that I bought from a chinese supplier, these 3 can be connected together on the same controller, however that 1 from the warehouse wouldn't connect to the same controller, does that mean the chinese supplier uploaded the 852 firmware on the one 851 that I have? Also do you know where I can find the firmwares? or a guide for the 851 and 852?Thanks.

### Reply 3:
All Canaan firmware is located at <link> at the labels on the side of the miner to see what it should be then connect just the 1 that does not work to a controller and look at the GUI to see what it says under 'DEVICE"". If it is blank or does not match what the label on miner says you will need to apply the correct MM firmware to the miner. You may also have to load a matching OpenWrT onto the controller as well.No matter what, the different Avalon's need to be on different controllers.

### Reply 4:
Yes thank you very much, seems like the MM doesn't match the side :/ there's 1 that says 14.5TH/s instead of 15 which I suspect is actually an 851 cause they scratched off the number so I can't say for sure

### Reply 5:
Would you mind explaining how to identify the controller? mine looks like the avalon one, but doesn't have the avalon logo on it, I opened it up and the chip is some chinese brand.

### Reply 6:
The controller needs to be some sort of RasPi, it can be made by anyone. Most common is the RasPi-3B. The 3B+ will NOT work. Odds are your controller is fine. If you look at the GUI > status it should say something like ""Raspberry Pi 3 Model B Rev 1.2""

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20627,"Date: 2015-09
Topic: Constant Dropping of one Board Antminer S5! (ALL of THEM)
### Original post:
So! me and my friends got each like 8 antminers S5, different batches, using a Corsair CX750M, HP DSP 800GB and DELL N750P on the miners.. we all use different routers, switchs, firmwares, but we all suffer from the same thing.One of the boards on the miner will turn off for about 6 minutes, and then turn on again, its always the left board if you look the miner from where it pulls air. it happens in ALL the miners! not even one saves from this problem!Its random, so in the morning it can happen to 2 of them, and in the afternoon to 1.. it can happen twice in 24 hours to the same miner.How did i find out about it? one day i was checking the miner Hashrate 5 seconds and realized it was hashing under 600 ghs for 6 minutes and then went back to 1.15th, you can even see the red led on the board turned off!

### Reply 1:
I have a couple of S5s each powered by their own EVGA 750 Gold units without issues. These units have been hashing since the S5 was released; I think mine are batch 2.

### Reply 2:
Try switching the power plugs into the hashing boards, and see what happens. If the problem moves, then the issue is the power supply.

### Reply 3:
The problem is not because of the PSUs, we tried with different PSUs, like i explained

### Reply 4:
Official ideas:<link> that does not work try other PSU's as others have said. Some S5's have a personality and do this. You will notice it is posted about more then a few times.

### Reply 5:
Obviously, this is boards problem.They are sometime overheated and now we have some chips with poor contact.My recommendation. Turn the controller to the other side, so that data cables can be exchanged. It is only four screws, at Controller metal frame.Check , the error is repeated on the same blades or not.

### Reply 6:
Come on, i would know if the problem it's the controller board im talking that 22 miners from different batch do the same thing! and people here come and say to check the PSUs.. it's like they are not reading what i typed.. What are the odds that me and my friends have bought 22 miners with the left BOARD with problems???

### Reply 7:
What are the odds that You and You friends have bought 22 miners with the controller board problems???

### Reply 8:
Sounds extremely unlikely. How do you know that the left board turns off for 6 minutes?Rich

### Reply 9:
You will see the miner hashing bellow 700 GHS, and if you take a closer look to the miner the RED LED is off, after 6 minutes the RED LED turns back on the board temperature rises from 30 C to 50 C again (if you touch the heatsink while the RED LED is off you can feel it's cold

### Reply 10:
okay lets start right here.you have s5's correct?every psu you use is a bare minimum psu. they all should be able to supply enough power yet they act like they don't.So first question is on each psu do you :use 4 cables from the one psu into 1 s-5 or do you use 2 cables from 1 psu into 1 s-5?Next question is the gear in different locations with different internet. Or all in the same location?Next question do you mine on the same pools or different pools?

### Reply 11:
1- We use 4 Cables from one psu into 1 S52- They are all in different locations3- Different Pools.. Nicehash, Antpool, Bw

### Reply 12:
Well assuming this is not a wind up. and I only say that because S5 has been round for some time and I have never seen the same problem or seen it reported before. So a couple of questions & ideas.First carry out all the suggestions above, do not reject ideas because you do not think they will work as these people are very experienced. In particular do try reversing the controller board as described by Tupsu as it is far from certain that the problem will stay with the controller board or swap to the other. I think you should also swap the fan to the other end of the S5 to keep the airflow the same.I have seen a single hash board drop on my S5, it's a rare occasion, and a lot of the time was when I was playing with reducing the 12V to undervolt them. Usually when doing this one hash board would drop out before the other. But here's an odd thing. On all occasions when I have seen a single board drop out I have never had it recover on it's own. I have always had to reboot, which you do not seem to have to do?So what other info do you have? What frequency are you tuning at? Worth trying dropping it a notch or two and see if that fixes the problem?Finally can you think of any common fa<rest of post truncated>

### Reply 13:
I have one s5 that behaves the same way. set up a crontab entry with cgminer -restart every 6 hours

### Reply 14:
I think this must be a tad exaggerated. Just the chances of 22 miners having same problems are slim. Did the same person setup all of these miners?I read the PSU's do you have any that are a little bit higher quality? Those are all ok... none great. But I suggest posting some networking screens, status <rest of thread truncated>
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    ""hardware_name"": ""HP DSP 800GB"",
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10620,"Date: 2017-10
Topic: How can I contact Bitcoin mine farm in China?
### Original post:
I watch from this video <link> farm is located in Dalian ,China.how can I contact to this mining farm or the other farm?Thank you

### Reply 1:
Go to china and hunt them down.The video you link says SECRETIVE mine. they arent just gonna throw out a public phone number for you to call.

### Reply 2:
They will never disclose anything. As they say once the secret of the mining farm is released in the wild they will lose all sorts of competetive advantage that they have over other mining farms. Become a documentarist and come to China. That is the only possible way. It is like ARGO in China.

",[]
3908,"Date: 2016-01
Topic: Group Buy! - ANTMINER S7 BATCH 9 - 995 - Ends feb 3rd
### Original post:
BEFORE READING : Contracts can be made if neededHi, Everyone!This is a simple post.I am looking to make a group buy for the ANTMINER S7 the price is 995$ in BTC/USDI can't afford the miner by myself so a group buy is my best option.Electricity : before I get going on the money front I want to let you know I live in California were it is 21.3 cents per kWh or at least the average.The cost of electricity will be covered by the miner.The MinerHashrate : 4.73 TH/s 5%Power Consumption : 1293Wprice : 995USDBuying In : It's simpleI want to make shares so you can put in small or large amountseach share will be 1$ so 1 share = 1$ and since the machine cost 995 there will be 995 sharesI currently have 400 dollars that I am willing to invest so I will receive 400 shares leaving 595 shares leftnumbers wise : 1s = 1$shares : 995Owners : Harvin 400 sharesFor all buyers who want to buy in here is my btc address: <truncated> send btc with the followingForum nameemail or contact informationbtc adress just so i can do 1 big copy and pasteamount paidamount of shares gainedPayoutsThis will be done through bitcoin sorry you can convert to other online currency yourselfPayouts will be done monthly and I<rest of post truncated>

### Reply 1:
Yesterday you had $1800 to spend on a miner, why all of a sudden are you now at only $400?<link>

### Reply 2:
No escrow just pay straight to ur BTC addy? Yeah no problem on its way!

### Reply 3:
It is a dead idea with the mentioned ""21.3 cents per kWh or at least the average. The cost of electricity will be covered by the miner."". So paying double what any hosting center would charge and going with someone pretty new. It is not going to work out happy in the end.OP at over 21 cents you really cannot mine unless you might short period and sell gear. That is your only chance at profit, you cant run long term with a S7 on that and be profitable.

### Reply 4:
You beat me to it, forget that a total stranger with absolutely zero trust or history is asking for over 1btc with no collateral, he is trying to mine at super high electricity rates. It would be less than half of that to find a hosting center for the unit. At that electricity rate, the miner is about at 70% maintenance to profit ratio. Absolutely no way it will turn a profit (assuming its not stolen)

### Reply 5:
Why start multiple ""group buy"" threads offering different miners when you haven't resolved any of the issues raised in the first thread?<link>

### Reply 6:
Found a cheaper miner that was better also they person I was buying from needed cash

### Reply 7:
I know I'm a newbie but within 1 day of actually researching mining/cost of equipment you could realize this guy eitherA: has no idea what the hell he's doing or B: Trying to scam uneducated members (who can't be any more dumb than this guy).Within 2 months in difficulty change (assuming 10% increase every 2 weeks) this miner will no longer produce profit due to the cost of electricity. If continued through the halving coming up you will be grossly in the negative.I don't know if he just doesn't pick up on how things work here or what but its comical. The fact that the word escrow is never once used and that he's trying to piece out a single S7 for ""contracts if needed"" doesn't exactly seem like a good group buy option... Good luck with that.

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]"
23548,"Date: 2021-04
Topic: Brand new S9i minor, which fails in series!?!
### Original post:
Hello,I need your help.I bought 6 Bitmain Antminer S9i, one used and 5 new from a clearance sale.I got the used one first and one of the cards broke down the same day I received it, I spoke with the seller who assured me that everything was working properly for a long time.I said it was a stroke of bad luck, but today I lost a second card on that same minor!What is wrong is that on my 5 new miners, I lose a card almost every week!How is this possible on new miners? And I'm sure they were brand new, as well as their power supplies.In the space of one month I already have 4 cards that do not work anymore and 2 that show signs of weakness.What can I do?I've already spent hundreds of hours trying to figure out what could have gone wrong, I've reflashed the cards, put the original software on them, no improvement, I've reinstalled Braiins OS+, but no improvement.I'm really confused, I just invested a lot of money and it doesn't want to work as I can see in others!Thanks in <truncated>

### Reply 1:
They were probably being overclocked.The previous owner probably thrashed them with 'non-original' firmware and then sold them as they started to fail ...

### Reply 2:
Hello,I want to admit that it was possible on the second hand one, but on the 5 new S9i how to explain that?They were packed, taped, brand new, not a dust, you can see that they have never been used.I run them between 800 and 1240 watts, they are in a cool room, they run slowly, the hot air is evacuated through a duct.Only last night, I still have a card that stopped working!I don't understand what I could do to solve this problem.In the space of a few weeks, out of my 18 cards I have already lost 5 and I have two that are showing signs of weakness!

### Reply 3:
The average failure rate on the S9i should be a lot lower than that, but it's normal to be unfortunate and get a bad batch once in a while, the miner status shows temps are fine and fans aren't even above 50%, what is the relative humidity in the room they operate? if it isn't too high and since temps are good - I don't think there is anything you can do, you just need to accept your bad luck.

### Reply 4:
Indeed, I think it is a story of bad luck!The miners are in a non-dusty room, it sucks air between 7C and 20C, the humidity is 60 to 70% depending on the day.I unplugged the cards that didn't work anymore, I'll see from time to time to plug them again in case I have a stroke of luck and they want to start again.In the meantime, it's for sure that I didn't have any luck!I was well informed and indeed the S9i are known to be reliable!That's all, thanks for your answers.Mickael

### Reply 5:
Ok thanks for the info I had understood that a lot of mining farms in the extreme cold, for example in Siberia were running much colder air through their miners.Maybe to cool down overclocking miners?

### Reply 6:
The 20C inlet temp is fine but colder than that can definitely be a problem. 7C inlet air temp is far too cold. Miners are designed to run with chip temps that range from rather warm up to pretty hot -- as in up to 80C and even higher.Query: Are they more stable at the higher temps? They should be.

### Reply 7:
Okay, I understand better.Thank you for this valuable <truncated> is definitely something wrong!What could decimate all my cards one after another?I just lost another one of my cards!This one on the S9i bought second hand 1 month ago.First card lost the same day of the startup! the second one 5 days ago and the third one 1h ago!As is possible there must be something that disturbs all this!Is it the vibrations?They are fixed by two by the aluminium slide on the side of the miners.They are in a multi-storey sound insulation box with air baffle at the entrance and exit.The card was working great at 4.5 / 5 ths, then all of a sudden 0!I can see the 63 Asics, but nothing else!I'm really angry, I'm investing in something I'm interested in and all I get is worries, yet I can read so many stories of people who have no worries for years, miners filled with dust that heats up but continues to mine!I want to believe that there is a bad luck, but I think that there is a technical factor that comes into play!When I see the reliability of these machines it is absolutely not normal!On two of my new S9i, no way to exceed 9Th/s with 3 cards!However, on the five new S9i, everything was working fine <rest of post truncated>

### Reply 8:
Can you post the kernel log for one of the gears that recently went down? I also want you to try and disconnect all miners and keep only one running for 2-4 hours to see if acts any differently, if that's the case i'll tell you exactly what to troubleshoot, if the room is too cold try to set static fan speed using this trick, set the fans to 20% and watch them closely, you don't want them too cold or too hot.I invested about 2 BTC in 17 series gears and some junky S9ks, all the S9ks are n<rest of thread truncated>
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20826,"Date: 2015-12
Topic: Learn basics of mining
### Original post:
Hello, I am not sure if this is the right place for my question but I want to know the basics of mining here, I see every day many new miners coming with more efficiency. Can you please let me know more about this.

### Reply 1:
To answer your question properly, we'll need to know what you're looking for.It depends if you want to know how to mine by yourself (setting up a miner physically, network, pools, etc.) or if you want to know how mining works theoretically. If you want to learn both, I suggest you start with <link>

### Reply 2:
You might want this to move into the mining section because most of the mining pros are in there and they might not read your topic in here.

### Reply 3:
It's fine here since really new question. OP you need to tell us a lot more also you will have to do some research. To ask about learning all mining... huge topic cant really teach you it all.If your wondering on profit what is your electricity price? (after taxes and fee's, make sure to include). Once you know that your a big step closer to knowing if profitable. Also do you have a Import or VAT tax?

### Reply 4:
This place is <truncated> are that some people that have access to inexpensive enough resources run equipment that hashes bitcoin block headers. Mining pools rent this hash power from them for a small amount of money. If the person running the equipment spends too much on resources then they earn less than they spend so they lose money.Every day? That's unlikely. It happens often, but I don't think it happens every day.Sure. What would you like to know?

### Reply 5:
Many new miners we can see nowadays But to be successful in mining We need to start as largescale mining business Else We cant see good profit due to electricity consumption. And We can find Solar power miner in market Better buy and use for mining I think that will be helpful for the new miners.

### Reply 6:
efficiency is not often, it's probably every 6 months-1 year time if tech can permit itlast time was with the s5 then the s7 come out many months later almost one year or more, and it was only double of thatthe consumption of the s7 is only $45(with an electricity of 0.05 cent per hour) and the s5 was double of that, so in one year they only saved $45 in the consumption, and this value in the future will matter less and less...

### Reply 7:
I started a thread about mining basics in the the forum, but it got moved. As I understand it, if you only have a basic system, you are too small to be accepted by a mining pool, so if you want to learn about mining, you have to start as an independant miner. Of course you have no chance of making any money, but it should be a good way to learn about mining in depth.Please contradict me if I am wrong.

### Reply 8:
This is not true.This is also not true.This may or may not be true depending on the cost of the resources you have access to.A better way would probably be to read about it from things written by knowledgeable people, and avoiding things written by people that have no idea what they are talking about.I have.

### Reply 9:
I wanna start mining altcoin as well, probably just the new ones and trade them when i have a good volume. I just don't have the right hardware, is having a nice looking 1gb of graphic card able to mine?Which script can GPU mine?

### Reply 10:
everything, you need ccminer or sgminer, depend if the card is gpu or nvidia, but 1 giga card, unless we are talking about the old good 750ti, i don't think it will be profitableyou need nvidia 970 at least or the new amd series

### Reply 11:
Really? Is it that cost efficient?

### Reply 12:
Thanks for introducing that link, I checked it and some of references such as the one's in which hashcash or proof of work was introduced, it a bit technical, but I think it gave me at least good idea now

### Reply 13:
I like the way that you answer the questions and thanks for your response, now I want to know what does hash bitcoin block header mean that you used in your sentence?

### Reply 14:
Thanks from your response, the number that mentioned 45$ is for 900 hours of usage? What will happen after paying 45$ will we have a bitcoin in the average?

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23564,"Date: 2021-05
Topic: T17e problem
### Original post:
My miner device gives this error, where is the <truncated> <truncated> Set to voltage raw 1800, step by step.chain 1, <truncated> reg = 0x 77777772021-05-05 <truncated> Chain[1]: find 78 asic, times 0chain 2, <truncated> reg = 0x 77777772021-05-05 <truncated> Chain[2]: find 78 asic, times 02021-05-05 <truncated> Set to voltage raw 2000, step by step.2021-05-05 <truncated> set uart relay to 0x330003chain 1 domain 0: d0 0.402, d1 0.396, d2 0.394, d3 0.308, sum = 1.499634chain 1 domain 1: d0 0.402, d1 0.396, d2 0.417, d3 0.285, sum = 1.499634chain 1 domain 2: d0 0.393, d1 0.378, d2 0.391, d3 0.338, sum = 1.499634chain 1 domain 3: d0 0.378, d1 0.378, d2 0.384, d3 0.360, sum = 1.499634chain 1 domain 4: d0 0.374, d1 0.372, d2 0.357, d3 0.383, sum = 1.485718chain 1 domain 5: d0 0.374, d1 0.379, d2 0.375, d3 0.363, sum = 1.491577chain 1 domain 6: d0 0.418, d1 0.422, d2 0.414, d3 0.245, sum = 1.499634chain 1 domain 7: d0 0.376, d1 0.374, d2 0.373, d3 0.368, sum = 1.491577chain 1 domain 8: d0 0.359, d1 0.360, d2 0.354, d3 0.357, sum = 1.430054chain 1 domain 9: d0 0.359, d1 0.359, d2 0.354, d3 0.328, sum = 1.400024chain 1 domain 10: d0 0.322, d1 0.327, d2 0.312, d3 0.323, sum = 1.282837chain <rest of post truncated>

### Reply 1:
See the end part in your log sample..Some chip is running over max. temp at 101C (max. level is 98C).Is there some damage is heat sinks or a bad contact between heat sink and chip?Is your ambient temperature too warm?Are the fans running ok?

### Reply 2:
Last time device work in high temp and tern off , now cant start hashing.Usually can identify chips on hashboard but sometimes cant identify them , Could this be due to the device overheating?Fans works fine

### Reply 3:
The temp part has to do with the heatsink contact, finding less than the total Asics has to do with the terrible quality of the solder paste Bitmain uses, it's a very common issue with all the 17 series, the E version is the worst of all be it the T or the S type, the hash board is probably dead and needs repair.

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9433,"Date: 2015-10
Topic: How to reprogramm asicminer?
### Original post:
Hello.Is there way to reprogramm asicminer for my own task. For example calculate hashes sha256 but not for mining?

### Reply 1:
Doubtfull, but it might be possible in theory.There are other hardware solutions for other uses of SHA256 out there, though.

### Reply 2:
Bitcoin mining ASICs are ASICs. They are not reprogrammable in any way shape or form, period. And no there is absolutely no other use whatsoever in the universe for their mining circuitry.

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16290,"Date: 2022-07
Topic: World Hashrate map / Miners / Bitcoin
### Original post:
Hi guys, hope you're enjoying your Friday.I'm looking for an interactive map in order to estimate the number of BTC miners / farms per country. Do you know if a such map exist?I found out this map => <link> it seems it's tied up with pools and not miners directly.Thanks for your feebacks.Larson311

### Reply 1:
There is really no way to know. Mining pools do not publish where people are mining from so all you can see are the pools.Even if the pools did say where the work was coming from it would be a guess at best. They only know the IP that the work came from between VPNs & proxies it would be a general guess at best.-Dave

### Reply 2:
I think we can safely assume that the vast majority of miners don't mine behind VPNs, and the map provided in the OP goes in line with the study from Cambridge, and I believe they use the same data since the numbers look pretty similar, you can read more about the ""data aggregation and analysis"" they used here, but long story short, they get these data from (BTC.com, Poolin, ViaBTC, and Foundry) and separate it by IP addresses, the last update was April 2021 when those pools made about 35% of the total network hasharate, while you can't take this info to the bank, I believe it's accurate to a fine degree.Of course, with the recent shutdown in China, these figures must have changed a lot, but at least at the time of posting them, they were fairly accurate.

### Reply 3:
I'd very much doubt the accuracy of that map.To get it accurate would require pools to constantly share IP address information about the people mining on their pools.That information is, to be blunt, a major issue to provide to anyone since each IP is directly related to one <truncated> range from a 'node' to the miners mining on it can be 100s or 1000s of kilometers.If the network is high quality, these distances might not be problematic, and, well, the miner has to choose a node to mine to, so if their choice of pool doesn't provide a node very close to them, their choice of node could be a long way away.Also of course it's not accurate due to the obvious:<link> if they did get all that information accurately back in Oct 2020 (which they couldn't) it's gonna be far from accurate today.

### Reply 4:
THE HASHRATE MAP RAWKZ... THANKZ

### Reply 5:
How can I start participating quickly, because the current market is not suitable for investment, and I need to participate in mining again.

",[]
16996,"Date: 2011-12
Topic: XFX Radeon HD 6950, only 305-310 MH/s
### Original post:
According to the wiki article on mining hardware comparisons, I should be getting 360 MH/s.i5-2500k CPU, 650W PSU, 8 gigs of RAM, Gigabyte's GA-P67A-D3-B3 MOBO. Temperature hovers around 100 to 126 degrees Fahrenheit or 37 to 52 Celsius, aside from one part that's down to 77/25 degrees.It is a completely new card, not overclocked or modified, I've been mining with it for about a day and it's stayed steady at 305-310 MH/s. If there's any other info needed, just ask. Other than this oddity the rig does just fine, runs recent games on highest settings and all that.

### Reply 1:
Your speed is right on par. Look at the wiki again. Notice those cards are overclocked to the max with unlocked extra shaders. You're not overclocked and your temps are ice cold, meaning either your ambient is cold or your card isn't even being used 100% yet. Lots of tweaking you can do just with miner options. I suggest cgminer.

### Reply 2:
Thanks!

### Reply 3:
~390 Mh/s all day long xfx 6950 NOT UNLOCKEDOC'd CC - 952Mem - 390Temp - 68 C

### Reply 4:
By the way, in case anyone else has the same question as I did, I just added the flags -v -w128 -f2 to an OpenCL miner in GUIminer. Increased to 340 Mh/s, took about 3 seconds.Thanks for your advice also, what@3. I might try some overclocking later when I'm more knowledgeable.

### Reply 5:
+1you can do your overclocking, fan speeds and much more, easily, from within the miner

### Reply 6:
If i where you try cgminer and see how much that does For more options start cgminer as follows : cgminer --helpIts so full of options too much to mention here I personally used on my 5870 : () means you need to replace it fully example -u tester -p x cgminer.exe -v 2 -w 128 -I 7 --gpu-engine 900 --gpu-memclock 450 -o <link> -u (pool username) -p (password used) If you run windows save it into a miner batch or cmd file so you can start it in a easy wayMy sapphire 5870 toxic makes about 440 Mh/s running at 920 Mhz core and 450 Mhz memory with cgminer ofcourse the average speeds are not consistent cause there are too many factors involved Now i have run this 5870 at 940 Mhz without problems but i see the usage of electra go up so high i think its not worh doing.I think more important is have a efficient miner which uses not so much electra but with a good average. Now lol i have a 4770 still running and i had made a copy error it ran 15 minutes at 940 Mhz on the cmd from my 5870 Seeing such a small card doing 108 Mh/s scared the hell out of me I know some people get these cards well near or over 1000 Mhz but i really think its not good to do so, even stronger i think my cards can run<rest of post truncated>

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22710,"Date: 2018-08
Topic: Turning miners off during storms
### Original post:
Cautionary tale about mining, esp. during a thunderstorm. I had ~160amps of 240v miners online when a storm took out one leg of power. Apparently, the miner psus switched to 110v (at 320 amps) momentarily w/o tripping the main. It fried the 200amp meter & base: $400 repair (I got off cheap) <link>

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21008,"Date: 2016-04
Topic: S7 Hash Rate lower than 3 TH
### Original post:
I have an Antminer s7 , It works properly .But yesterday it stopped working and I had to restart it.After restarting it hash rate stuck in 3 TH .I checked ""kernel log"" and I found the below failed errors.can any body tell me what is the problem <truncated> bone-capemgr bone_capemgr.8: bone: scan failed (1 time)[ 3.497572] bone-capemgr bone_capemgr.8: bone: scan failed (2 time)[ 4.036629] bone-capemgr bone_capemgr.8: bone: scan failed (3 time)[ 4.575690] bone-capemgr bone_capemgr.8: bone: scan failed (4 time)[ 5.114753] bone-capemgr bone_capemgr.8: bone: scan failed (5 time)[ 5.653815] bone-capemgr bone_capemgr.8: bone: scan failed (6 time)[ 6.192880] bone-capemgr bone_capemgr.8: bone: scan failed (7 time)[ 6.731940] bone-capemgr bone_capemgr.8: bone: scan failed (8 time)[ 7.271002] bone-capemgr bone_capemgr.8: bone: scan failed (9 time)[ 7.810065] bone-capemgr bone_capemgr.8: bone: scan failed (10 time)[ 8.318047] bone-capemgr bone_capemgr.8: Failed to scan baseboard eeprom[ 8.325115] bone-capemgr: probe of bone_capemgr.8 failed with error -110[ 8.334647] <truncated> 2c,da against 2c,da[ 8.340174] ONFI param page 0 valid[ 8.343846] ONFI flash detected[ 8.347165] NAND device: Manufa<rest of post truncated>

### Reply 1:
What does status screen show? Does it list all chips as there? Have you made any changes with restart as if you just turned power off/on it really should not have changed anything.Are you able to post a picture of status screen? Also what batch S7 is it?

### Reply 2:
Check all your power connections. Screenshot would be the best though.

### Reply 3:
also what psu are you using? 1 for the whole machine (1600w evga/bitmain psu) or are you using 2 different psu (2 1300w evga)?

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10547,"Date: 2017-09
Topic: S7 (or S9?) - Higher Hashing when Hot?
### Original post:
I just wanted to get your thoughts... I have a few S7s and typically I'll have the fans at 30% for the reduced noise (around 2600 RPM) and the temps are usually around 60 - but I recently changed a few of them to 20% (1920 RPM) and the temps have climbed a bit to 70. BUT, they seem to be hashing higher by a few hundred GH than they used to. Is that expected?

### Reply 1:
I know it seems odd, but these mining chips do like to run a little warm. I ahve found that if I let the board temps get under 60c on the S7s they actually start to become unstable and crash a lot more than expected. Avalon 6 miners are the same way, under 60c and they see a noticable hash rate drop. I have personally found with the s7 that the sweet spot is 65-70c.

### Reply 2:
The S7's like being hot boxes.As UK temps are falling I'm lowering fan speeds in my mine = warmer miners = more stable hash rate.

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14315,"Date: 2011-06
Topic: Something going on deepbit is it a concern?
### Original post:
Hey on my way out i noticed connection probs with the miners, and couldnt connect to the site.Figured i bring it to everyones attention, o yah we are talking about deepbit.hope everything is well

### Reply 1:
I don't use Deepbit, but they're either being DDOS'd or you have connection problems.

### Reply 2:
Its all good it only lasted about 10 minutes.

",[]
21878,"Date: 2017-11
Topic: Using Adsorption Chillers to cool mining facilities
### Original post:
I read about Adsorption cooling, which is a process whereby heat Is used to generate cold air, seems that the machinery needed to do this process is In development stages, With only few big machines out so far. Could this in the future be used in mining facilities, where miners will be stacked in Isle with Adsorption cooling machines between the isle, using the one miner's hot outlet air, and transforming it into cool air for the next's intake.<link>

### Reply 1:
thank you for the info. very good system. maybe possible to scale down the system to have a DIY cheap system.I live in Thailand.I am also looking for a solution to use the heat produced by the crypto mining and at the same time reduce the temperature of the air (crazy starting ideas (not always good): sauna, heat the water for showers, use heat for doing some foods (yoghourt, smoked meat, etc), use heat to accelerate the growth of some vegetables, find some bacteria that needs heat to do some useful job).other ideas are welcome.

### Reply 2:
Wow, those are some great ideas, I am very keen to look into some of them. As for the Adsorption system- for now I don't think, it's a viable idea, but I think it would be something to look out for in the future.

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11869,"Date: 2012-04
Topic: p2pcoin - a self contained p2pool node - boots from CD, USB or network
### Original post:
p2pool and bitcoind generate a lot of small writes. Nobody is worried about this killing usb drives?I use usb linux on each of my rigs (6) and then point them all to a non-mining machine running bitcoind & p2pool on a HDD.

### Reply 1:
Oh, one other thing. Bitcoin earnings are generated directly to the address provided, so it is no big deal if the wallet created by bitcoind is lost every time you reboot when using the RAM drive.The same is not true of namecoin. There is a script that runs from cron and checks the wallet balance every hour. If it finds anything, it attempts to send it to the address provided. This script is not well tested, and even if it were, you'd still have a huge window where a reboot could eat your wallet, and thus coins. Please keep that in mind.

### Reply 2:
If you have 4 GB of RAM, it uses ram disk. Also, no, I'm not worried about killing the USB drive even a little bit. It would take months or years, and you can get 16 GB sticks for under $20 now.

### Reply 3:
Hmm. Interesting. So it doesn't keep p2pool & blockchain persistent (written to usb drive). What happens on reboots?

### Reply 4:
What I'm thinking of doing in a future release will be to give the option to download the wallet.dat for namecoin from an external source. There are some security implications of that, of course, but since p2pcoin nodes should be running behind firewalls, it may be a good choice for people that care about the chance of losing their namecoin earnings.

### Reply 5:
I don't know how BAMT deals with persistency, but couldn't you do something similar to prevent issues like this? Obviously this would need a USB stick and not a CD boot.

### Reply 6:
Im not enought experienced to use this but i love to help new projects, so i dl this and keep it on my torrent client for future downloaders.

### Reply 7:
During a clean reboot, it tries to synchronize the bitcoin and namecoin chains to persistent storage, if you have it. And then when it boots, if it sees a local copy, and if that local copy isn't more than 2 weeks old, it will try to use it, rather than fetching it from the network again.No attempt is made to save the p2pool database. Your shares are already in the cloud, so there isn't any point.

### Reply 8:
Cool, thanks for seeding.And if you'd like to try it, I'd be happy to try to walk you through setting it up.

### Reply 9:
No problem mate im happy to help to share. But for thing itself i do not have atm time to try. Maybe next weekend. But anyway you should edit torrent file in your first post and start keeping revision list also. That way its more easier to download always latest.

### Reply 10:
So, I think that about a half dozen people have downloaded this so far. Did anyone get it working? Does anyone have questions or comments?

### Reply 11:
I would be more worried about this killing Hard Disk Drives... Yes, the bitcoin blockchain already killed one of my 500GB drives. That's what I got for running it for months non-stop in a windows environment.Simple explanation: Blockchain fragmentation killed the disk. <-- How do I know? Because I had to recover the blockchain from the disk and as soon as it hit the fragmented part it was sloooooooooow as hell!

### Reply 12:
Added another line to keep up share. Now im sharing it via 1mb upload and 10mb upload. It should give good speed atleast european downloaders.

### Reply 13:
I would be careful here. After months of field testing with BAMT (a usb based linux that makes every attempt not to write to the USB more than required) we see that some USB keys will die after a surprisingly short time (sometimes only a few weeks, with considerably less writes than running p2pool would generate). It varies greatly from one model of key to another, but I would expect crappy keys to die in a matter of days running p2pool. Maybe you don't care, but it would be best to warn users of this potential clearly.

### Reply 14:
If you are doing everything you can to avoid writes, and you are still killing drives, the problem is the drives. I'll put a note at the top, but the answer in p2pcoin is to boot from CD or PXE if anyone is concerned about their flash drive. Or even just not bother taking the extra time to add persistent storage.

### Reply 15:
The name is confusing. Makes me think it's another altcoin.

### Reply 16:
I took linuxcoin and added p2pool. The first name that popped into my head was p2pcoin, and as far as I can tell, nothing else is using that name.I'm open to suggestions, but I don't really think it is confusing.

### Reply 17:
Everything including forum usernames has a combination of the words ""bit"", ""coin"", ""pool"", ""BTC"" etc in them. What's to be confused about?

### Reply 18:
So when you reboot you have to download the block chain again? That sounds like it could add a lot of downtime.EDIT: Oh. you mention rsync. I missed that. This <rest of thread truncated>
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21631,"Date: 2017-10
Topic: Help with Avalon 741 cgminer ""No devices detected""
### Original post:
Post a picture of the power supply and the back of the miner (where the power supply PCIe connects to it) - are the lights on the back of the miner on? Is the power supply the right voltage? Are the pci-e cables the right wiring? (if you hold the cables the same way, are all the wires the same color)?

### Reply 1:
do you have any working avalon's?

### Reply 2:
I will get a picture up when I get back soon. The light on the miner is green. The light on the AUC3/USB dongle is also green. The PSU and cables came with the unit direct from Canaan. Will confirm about the wiring.I've tested three miners, all with separate PSUs but none are visible through the controller's cgminer status page so if we have a problem with the miner/PSU it's common to all three.

### Reply 3:
What country are you in? Are you running 220v? (The canaan power supplies only run on 220).How is power getting to the PSU - through an outlet, a PDU, etc? What's the power outlet look like?

### Reply 4:
In the US. PSU is plugged into a regular socket at that has 220v going to it through a GFI. Will post a picture when I get back.Edit: From a software perspective, what else could I troubleshoot? I can see my worker on the nicehash dashboard, which leaves me to believe pool/internet connectivity is okay. One question I was unable to find a clear answer on is whether cgminer may need ports forwarded on the router but I don't think it does as the communication with the pool is outbound only. I haven't changed any other configuration on the Raspberry Pi unit as I anticipated it would work out the box but if anyone has had similar issues that were resolved by change to the software configuration, I'd like to hear what you did.Thanks for your thoughtful replies. Will get those pictures up asap.

### Reply 5:
Whats interesting is you say the AUC has a green light. This green light denotes connectivity yet when you look at your status page, the AUC itself isnt even registering. Before you mess with the miner, try to get the AUC dongle read by the controller. Thats the first step before even messing with the Avalon unit itself.The red circle below is where the AUC's should show up.

### Reply 6:
Thanks. So if the dongle is connected but no miners are plugged in, I should expect to see the ASC* device listed under Avalon Devices. This helps me narrow down where the failure is. Will try a third USB cable and a third AUC3 dongle and report back.Here are some pictures a friend took of the miner in question while hooked up:<link>

### Reply 7:
PSU: <link> supply at 220v: <link> of the miner/PCI-E cables: <link>

### Reply 8:
You need 5pin cable for Avalon 7xx. Please take a picture of your AUC dondgle while it is connected and everything is powered up.

### Reply 9:
Here's the whole setup <link> a close up of the converter <link> the light that's turned on on the converter: <link> was referring to the power cables when I called them 4 pin, which is the wrong name for them anyway lol

### Reply 10:
It really seems like its a power problem to me - can you get a tester to make sure you're getting 220 from those? Alternatively, you could try with a switching PSU and see what happens.

### Reply 11:
Thanks, will confirm it's 220v. Should the AUC3 converter show up in the cgminer status regardless of whether a connected miner has enough power? Or are you saying it's a power issue for the converter that's causing it to not show up in the cgminer status?Edit: tried two other PSUs and I have just updated the OP to include that

### Reply 12:
I have one A741 connected to a controller, which is connected via Ethernet to the router. I have confirmed connectivity with mining pools like nicehash (can see our worker listed through the Nicehash dashboard) but the miner is not hashing. Here is what I've tried to troubleshoot this issue:Replaced PSU Replaced AUC3 cableReplaced minerReplaced controllerReplaced AUC3 dongleReplaced ethernet cableReplaced USB cable connected to controllerTried 0.3A and 2.0A wall plug for controllerReplaced 4 pin cablesTried different pools (can successfully see our worker through the pool admin panel but no hash rate)Used both DHCP and static IP address for the controllerI am still unable to see the miners through the cgminer status page. When I run cgminer through the SSH interface to the Raspberry Pi, I get the message:No devices detected!Waiting for USB hotplug devices or press q to quitI am attaching screenshots of the cgminer config and status screens and the output of the cgminer start command. I have the with the system, kernel, and cgminer api logs if needed.CGMiner config: <link> status: <link> CLI: <link> someone that's faced a similar issue has a suggestion of what to try next.

### Reply 13:
Were the other PSUs also Canaan sorcerers?How are you powering the Pi? I'm thinking the power issue is the miner not starting. I've never had the AUC itsel<rest of thread truncated>
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11399,"Date: 2011-05
Topic: Possible driver or hardware issue on a Mac
### Original post:
Try running Software Update to ensure you have the latest updates for your Mac. I dont really have any suggestion other than searching the forum for this error message. DiabloD3, might know some troubleshooting steps.Found two file hosting providers with better reputation and uptime. I hope they will be better for all users.

### Reply 1:
Only time it says that specific error message is either the hardware is overheating, its insane, the drivers are insane, or the planets are aligned.Make sure your GPU is under 85c.

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14059,"Date: 2011-05
Topic: My 6470M is on 70 c  Is it ok?
### Original post:
Hello I'm using my laptop to do some minning and I see that the temperator of my 6470M is 70c Is it ok?I dont think there is a fan inside that can be changed...Is there a way to make it betterI use guimine is there a way to make the hashrate lower and then the temp lower?Thank you.

### Reply 1:
As long as it doesn't go over 90c it should be fine.

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22839,"Date: 2019-01
Topic: Just recieved newest batch of T9+ connected OK, now can't find IP
### Original post:
They look for an IP using DHCP - just go to your router's DHCP leases and see who recently requested an IP. They usually have the hostname antminer and are easy to spot. If you don't see anything in the router's leases, check your LAN cable.I never used the IP tool, and I don't think it's needed.

### Reply 1:
It sounds like you may still have IP address conflicts. I suggest that you either set static IP addresses on each of your miners or give each one a DHCP reservation on your router (or DHCP server). For example on my network I have DHCP reservations for every miner so each one gets the same IP address every time it reboots. This also helps in monitoring and troubleshooting the miners if problems arise.

### Reply 2:
I have tried the offending unit by its self and works fine.I have no idea why this is happening. I know it's an Ethernet problem.It can't be a duplicate IP.I reset all my router settings so I'm pretty sure my dhcp server isn't messed up. I haven't checked the mac addresses, with my luck that could be what's up, also the port speed thing, but I have no idea how to fix that

### Reply 3:
There are several ways to skin this cat.A couple of examples:Option 1:a) Set your DHCP scope to only issue addresses 192.168.1.2 to 192.168.1.99b) Manually assign static IP addresses to your miners starting at 192.168.1.100Option 2:a) Get the MAC addresses of your miners and configure DHCP reservations for each one of them on your DHCP server (or router).Notes: Assumption - your router address is 192.168.1.1 with a netmask of 255.255.255.0Set all your systems to the same netmaskSet your default gateway to 192.168.1.1Set your DNS servers to 8.8.8.8 and 4.4.4.4 (or any other good DNS servers)

### Reply 4:
I can get it to respond for about 60 seconds after resetting via IP report <truncated> pings 50% packet loss and traceroute fails with ""Ajax error""..After a minute or two it stops responding to any attempt to sign in on a web browser. IDK what I should do. Maybe I have some hardcore network problems?

### Reply 5:
I had initially tried doing that but immediately ran into problems. I was scared and thought I would never figure out how to get them back up. But then one at a time I used the IP report button to reset, and was able to confirm they all work fine independently but connecting one at a time results in 3 working great, then the 4th will respond to stuff but then drop off entirely until I turn off one or more antminers.What gets me is if I power off the eth rigs attached to the network, I get the same result, so it's not like a maximum device problem of traffic problem.They all have different IP's so it's not an IP conflict. I'm so confused.

### Reply 6:
Try connecting only the device that you are having problems with and see if it continues to fail. If it does, then it is not a traffic/conflict problem and may be a problem with the network interface on the miner. Also you might try putting the miner on another switch port. Have you tried replacing the Ethernet cable?Here are a few possible problems (no particular order):1) IP address conflict2) Duplicate MAC addresses (not likely)3) Misconfigured DHCP server4) Bad switch or switch port5) Bad ethernet cable6) Bad interface on miner7) Port speed/duplex mismatch

### Reply 7:
It might be worth it to build in some DHCP reservations using the miner's MAC addresses.OR Manually IP the miners, just make sure you do not use any part of your DHCP scope.

### Reply 8:
I gave up and moved the 4th miner to my farm facility.any ideas for future problems would be great though

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20742,"Date: 2015-11
Topic: antminer S7 with Corsair PSU
### Original post:
Hi everbody,I want to order the S7 batch 6. Does anyone know it works with 2x Corsair 750CSM PSU's?Reading the specs it should:<link> i read the controller needs a seperate PSU.

### Reply 1:
Theres 3 boards with 3 PCI-e each. You can't mix PSU for a board. So you need to power 2 boards off one, 1 board of another, not sure 2 Corsairs is the way to go. The Controller just need to be powered, it does not need a dedicated PSU.The boards need to be powered before or at the same time as the controller.

### Reply 2:
Good question. On paper it should be able to be powered by the 750PSU, since there are more slots.Regarding the controller this is new to me. Normally i connect 2 miners to 1 PSU, not the other way around.I guess you asked bitmain they say no and tell you to buy their PSU. It should be good if they recommend it, however it is an unknown brand to me and when it goes to PSU i rely on server PSU or Corsair.Please post your answer/ solution here.if you have it. I can bring my oldS3 PSU to use.

### Reply 3:
It cannot, like i said, you cannot use different PSU for a single board. So to be more precise;At an estimate 1200W at the wall, to give an idea;-PSU #1 will need to draw 800W~ (2 boards)-PSU #2 will need to draw 400W~ (1 board)-PSU #2 would ideally power the controller as well (which power the fans), it need its own 6 pin, not its own PSU. Total 10 PCI-e pins.Actual power draw of PSU#1 would be a bit lower, but overall a 750W PSU should probably not be asked to pull this much.Last thing, if you get a corsair make sure the OEM is Seasonic or Superflower, they have some batches/series that used low quality OEM.Personally i think i would go with a EVGA G2 1300 with this. Any 1300+ PSU made by Seasonic or Superflower behind whatever brand should do. This is it, for using 2 PSU on a miner. As far as using a ATX PSU anyways.

### Reply 4:
With other words i would need 3 PSU's of 2x 750 and 1 of little W. Hmm I think buying an EVGA would be better then.Can you tell me if this setup will succeed:-PSU #1 will need to draw 800W~ (2 boards)-PSU #2 will need to draw 400W~ (1 board)-PSU #2 would ideally power the controller as well (which power the fans), it need its own 6 pin, not its own PSU. Total 10 PCI-e pins.PSU 1 Corsair RM 1000WPSU 2 Corsair CSM 750W

### Reply 5:
That would work, but i would definitively go for a EVGA G2 1300w instead, cheaper than those 2 PSU combined, better PSU, no risk of having a part not powered at the same time or part of the miner shutting down after a surge.If you already have them available or are a hardcore fan of picking up PSU of varying OEM, then sure, i guess it'll work anyways.

### Reply 6:
I actually tested this exact configuration, it does work but its pretty terrible. 800W from the wall = around 720W load on the PSU which has a 825W peak load rating. However the limit of these PSUs is more the cooling actually, they don't fare well with high loadings and 35C+ ambients, so its more of a 750W peak rating when it gets warm.The other consideration is that the cables are 18AWG which means you're asking about 290W per cable rail. This is within the specification of the cable (2x 8 pin PCI-E) but they do get warm. The first PSU also requires 2x 2x molex to PCI-E adapters in order to make up the 6 it needs and to reduce PCI-E cable rail loads.

### Reply 7:
Im looking of sttarting out miningthis looks like a good one any recomendations?

### Reply 8:
Thanks a lot, this was the last confirmation i needed. I thought it should work on paper, but practical use is different. The 750 PSU can be used for other mining equipment, I will go with an Corsair 1200 AX the.

### Reply 9:
You should look into getting an Avalon 6 instead.Less PCIe are needed. The Batch 6 is bad because it only uses 1000 Watts or so but needs 10 PCIe.Which is like 2 expensive PSUs or 3-4 mid priced PSUs.Reason why you need so many mid-priced PSUs is because each blade requires 3 PCIe connections and you CANT intermix them between boards, which mean an CX750W can only power 1 board.

### Reply 10:
A CX750* can power two hashing boards.

### Reply 11:
Interesting. I googled the Avalon 6 but only find this tread <link> this shop:<link>

### Reply 12:
why <link> is a costly piece of gear and it is short in the pcie department get this<link> 9 pcie jacks spilt one to the controller. less money more watts more pcie cable long warranty

### Reply 13:
But doesn't an S7 require all 3 PCIe connectors per board?

### Reply 14:
Officially, yes. In reality, you should be very safe with 2 and you might be able to get away with 1(but dont do it), since by any mean thinkable, plugging 3 would be 100watts~ per connector is ridiculously overkill, 2 would be 150watts per connector and 1 would be 300 watts per. 300 watts is very limit, but with a small underclock i would think it would do just fine. Regardless always check your connectors regularly to make sure<rest of thread truncated>
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14541,"Date: 2012-02
Topic: Nice shopping tool (Canada only)
### Original post:
So, you're living in that dark, cold and snowy country, and you want to buy some mining tools?<link> was surprised that Canada Post offered that service, but it is really well done. You can compare prices between canadian shops really easily. You even have a price history of the items. Yeah, you can use it to shop for clothes or sports items, but what's the point of dressing well and doing sports if you can't mine like a man?

### Reply 1:
I've actually used the Price Compare for quite a while now, as I use it mainly to find the lowest prices in Canada on certain computer parts etc, so that I can use it to beat Memory Express (local for me) down on their prices and take advantage of their price beat policy.It works very well.

### Reply 2:
<link>

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13761,"Date: 2022-03
Topic: Will the real Vnish please step up.
### Original post:
So am I understanding it right Vnish.net is the real deal and Vnish-firmware.com is the knock off?We put the Vnish-firmware on a dozen machines as a test and they are all on top of the leader board on my pool account.But I might as well support the actual developer. Well my wife is a Russian national so biased a bit I suppose.

### Reply 1:
isnt Vnish asic.to? Been running asic.to on my s17s for over a year and love it.

### Reply 2:
How much extra hashpower are you actually getting out of the firmware upgrade and are you still using stock cooling?

### Reply 3:
depending on the environment, for an S17/S17Pro, you can easily obtain +10th without risk for the miner with the stock cooling ...All custom firmware will allow it, you just have to find the one that suits you best, functionality, dev costs, they range from 3% to 0.9% depending on the firmware and models)

### Reply 4:
I did early tests with HiveOS and remember getting 63-65th but that was dead of winter in a large warehouse. Due to the constants of where I'm mining now I don't OC, I use the custom firmware to fit my wattage and cooling limitations. I'm mining in a warm climate (SW desert) so heat is number 1 to deal with. With asic.to I can have thermal limits for swapping profiles. Stock firmware can't do 1/3 of the things the other 3rd party firmware can do. Current settings for the S17, 50.8th at 525Mhz for 1971 watts.

### Reply 5:
With the x17 family, plugging a miner runs risk of failure, period. Only people doing immersion seem to be able mitigate this.The bad soldering issue to the heatsinks is no joke. There is now a popular mod going on where they replace those single heatsinks with large plates screwed to the pcb. This was a <truncated> mistake, but they just ""quietly"" killed this line.I remember someone in this forum recommending to use them horizontally with the larger heatsinks pointing up, in an attempt to use gravity to mitigate this somewhat. If you didn't know the reason these miners were so cheap compared to the others, this is why.Used miners most likely have already damaged chips on them, it is a ""silent killer"", see, the manufacturer didn't bother to connect all the chip temp sensors, just two of them, so when any of the other chips start losing adhesion they start getting overheated without any warnings (maybe errors and chip retuning) until it finally dies, the fw may or may not compensate for this, being serial and ""domain"" based with the voltage regulated at a single point in the psu (not each hashboard or chip) makes this even more difficult.But fear not, the manufacturer decided that p<rest of post truncated>

### Reply 6:
Right now in northern SK I can climate control down to whatever I want easily and about 15 degrees C seems to work well and have been using the Vnish 60-62TH profile on about 20 machines and they have been rock solid. I have brains a go and got greedy the first go and landed at about 65 yet temps seemed really reasonable with the low ambient so I let it eat. Made it about a week and one card went down, by the end of the next week another was down and limping on the last.Figured well this is garbage gear Ill give it another go. Lowered it to very similar hash rate and draw as my Vnish settings.Ran rock solid for 2 weeks straight. I thought ok this might be the ticket. I wanted to like it! Then boom. Sum bitch lost a fan and was merrily tuning away for Im not just sure how long loading up to 80 degrees then unloading it to a reasonable temp and then back up.Still havent looked at the machine or thought about replicating why it didnt shut down.Nonetheless 3 more hash boards down.

### Reply 7:
How about running original vnish on your device and also get free remote monitoring and management software?<link>

### Reply 8:
Asic.to is a distributor for Vnish, just like AwesomeMiner, they all are legit and they all use the same firmware, you just get extra added benefits using them like more support from Asic.to or a great monitoring tool for AwesomeMiner.The mod does not really solve the issue by any means, in most cases the issue is below the chip and not above it (bad pcb to chip solder, not chip to heatsink solder), however, using one block of heatsink on top of the chips makes ""fixing"" those miners a lot easier since it's pretty hard to troubleshoot the miner with all those heatsinks on, I see some people take out a dozen heatsinks just to find that one bad chip, so without a doubt, unscrewing 4 or 6 screws to get a perfect vision on all the chips is a smart idea nonetheless.

### Reply 9:
Of course it does, the whole issue was the bad quality unleaded tin used by Bitmain between the chips and the heatsinks, and replacing the whole of them does the trick. I cannot say if everyone doing the mod is using good tin (with lead), but in principle, resoldering all heatsinks would do the fix. In addition, this mod uses screws against the <rest of thread truncated>
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heatsinks"",
    ""hardware_is_owned"": false
  }
]"
16459,"Date: 2023-03
Topic: Mining on clouds waves
### Original post:
you've mining experience or you're mining expertise yet you're still losing coins. I don't even know what happen I have mined $1500 bitcoin on clouds waves and I saw airdrops links which I decided to involves myself, just two days later I couldn't understand what happen to my wallets. both my money and airdrops I do not see again.Could this be some fun of scam?

### Reply 1:
Cloud mining is usually scam unless they are manufacturer as well. If you had your coins stored on third party's wallet/service, then there is a chance they took your coins. Always learn how to secure your coins first and then go after mining or trading.Providing more details is also required to conclude what really went down, sorry to hear that you lost money, hope you recover from it.

### Reply 2:
I think that, here is not the right section of the forum to ask your question.Look at the first post of the mining section : <link> mining is not real-mining, it is almost always only numbers on a UI of a website and nothing more, only a scam.If you put your public Bitcoin address in an explorer (mempool.space for example), what do you see? Incoming and outgoing transactions? Nothing at all?We don't have enough details to help you. But basically, excuse me for saying this, but there is a 99.9% chance that you just got scammed. There was probably never any Bitcoin on your address, but only you can find that out by checking your address on an explorer.

### Reply 3:
I've investigated numbers of cloud mining in the past years, I have faced some cloud mining teams, I asked them to show proof of the mining equipment they have in their farms and no single one was able to..The excuse they made was, they want to keep it private because they don't want to reveal their mining operation location.What kind of excuse is this? I never asked them for their sign board or mining farm field pictures. Yet many people believed them.

### Reply 4:
On which wallet did you store your bitcoins and where was the seed phrase stored?

### Reply 5:
You ""mined"" on a scam website, the numbers you saw there were just random numbers that show virtual earnings in order to tempt you to buy more and make more money. Most likely they never actually mined one satoshi as they never had any hardware in the first place.If you mean ""form"" of scam, yeah, definitely!!I'm really concerned that you don't even know how things work yet in another thread you you claim you're teaching people about bitcoin. What could go wrong with this?

### Reply 6:
yes it's just a scam. and also airdrop what? as a general rule, 99% of cloud mining platforms are just fake, ponzi or ... a scam. the other 1% is just not profitable. if you're not able to withdraw or your money disappeared well... you have been involved in a scam and there is not much that can be done at this point

### Reply 7:
I am tired if people Saying that they have lost money in Cloud mining and there are some friends of who got scammed by these websites. nd I told him not to do these things, you will only loose money and still I think that There are some ignorant people who are in crypto filed and they will loose money and scammers will make money too. So I will say that say away from this mining site and you will always loose such money.

### Reply 8:
Cloud mining is an obvious scam and I hate to see people falling for it. If you want to mine, then I suggest you do real mining. Sure, you might need to buy (invest into) some expensive equipment and you might not see a return profit for a while but you will pay off your expenses in time and then you will be making profits. No middle man, no third parties and no shady deals. All it takes from you is some time, some self-research, dedication and some patience.Anything that seems to be too easy/cheap/good to be true, probably is. This goes especially when your wallet does not belong to you but rather to some third party. Not your keys, not your coins.

### Reply 9:
I got a question:1. Did you manage to withdraw the money worth $1500 that you earned from cloud wave to your personal wallet?If you manage to withdraw your earnings to your personal wallet then it is possible that you got phished by the link.If you do not touch anything and just leave your earning on the cloud mining sites then it is very possible that the cloud mining site retract your earnings. If you deposite something on that site then I can say that you are scammed.To make sure that you are phished and not scammed, then you can check the transaction hisotry of the cloud mining site. If there is no withdrawal and your earnings is gone then it is a sure thing that the site scammed you.If there is a record of withdrawal to another wallet that you do not know then you need to clean your system of the trojan that is injected into your unit sytem when you clicked the suspcious link.Whether you are hacked or phished or scammed, I hope the reply on this thread give you<rest of thread truncated>
",[]
11529,"Date: 2011-07
Topic: How to monitor Solo mining server-side ?
### Original post:
I want to switch to solo , I'm in a pool only because I can watch the shares on every miner from one place.Is there an easy way to check with the Windows server (bitcoind.exe) ?

### Reply 1:
Well, if you generate a block it shows up on the client...?

### Reply 2:
How many GPUs are you running? If you have a significant number, you might just want to set up your own private pool.

### Reply 3:
Yes pretty much this, What are the alternatives ? How easy it is ?Not that I have that many, but some are at other location and currently I ""logmein"" into them to survey.This is also important because if we want more people to go solo, say on two GPU, It's too much of a feat to have them wait ~125 day to see if it work.

### Reply 4:
Pushpool is well suited for running private pools, and there are several web front ends available for it. I believe they're posted in the Mining > Pools section of the forum.

","[
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    ""hardware_name"": ""Windows server (bitcoind.exe)"",
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  }
]"
14525,"Date: 2012-02
Topic: hash rate
### Original post:
to all who are more knowledgeable than me (nearly everyone)what is the significance- if any- of the hash rate falling to between 8500 and 8000 in the last few days?is there a lot less actual mining?has the difficulty increased -so it takes longer?has the profit margin gone so its not worth it?is it a reflection of the fall in BTC to fiat?none or all of the above? too complicated to even try an answer? . reg

### Reply 1:
Might well be your second to last: drop from 5.7 to 4.7$/BTC within the last few days. Might be also bad luck.

### Reply 2:
I did think of one more posative reason (in the bath).a lot more people are catching on to the idea (started by the fed) that making your own money is a good idea! also reading a list of things the authorities aka FBI are doing goes to support Ghandi's ideafirst they ignore youthen they ridicule youthen they fight you (now perhaps)then you win. reg

### Reply 3:
The actual hashing rate over the last few days is just as unknown now as it always has been. Don't read much into things until it lasts a week or two.

### Reply 4:
Kjj is right, don't read too much into changes over the last couple days. Difficulty is set over a two-week timeframe and there are several ways to estimate difficulty changes, none of which are extremely accurate at present. Someone could be moving a large mining operation to a new datacenter, running something on an alternate block chain, using an FPGA data center for what it's actually intended to be used for, or etc.

### Reply 5:
This exact same thread shows up every time the exchange rate or the block rate changes, and lots of times when neither does.There is no such thing as The Hash Rate. It isn't measured. It isn't calculated. It isn't real.Your piddly little CPU could calculate two valid hashes in a row, but that doesn't mean that you got a temporary 5 petahash/sec upgrade.Whenever you see a graph claiming to show a network hash rate, you need to mentally cross out the graph's title, and write in your own:Note that this title is 100% past-tense, and that it makes no claims about what really did happen.

### Reply 6:
yes, I also looked at past threads and the only thing about the rate that is certain is that it is uncertain what it really means. now the rate is up again only 12 hours later. I was just trying to figure what could cause such large (relatively) moves?. You are right the difficulty does not change that frequently and that much. Also I can't envision all the miners all over the world turning their rigs off on tuesday night!. Similarly the value of BTC is a consequence of hash rate not a cause and its conversion to fiat fluctuates at a lower % rate than currencies generally. Perhaps its as you say small changes in production having a disproportionate effect on the rate/time ratio. Maybe a mathematician should look again at the charts and determine if we are crying wolf too often? .reg

### Reply 7:
There is no mechanism to measure the actual hash rate of Bitcoin. One can only see the rate at which Bitcoin blocks are found and added to the blockchain. Finding blocks is random. Finding many blocks is random. The number of blocks found in 12 hours is random. Nothing to see here, stop looking before you get in trouble.

","[
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    ""hardware_name"": ""FPGA data center"",
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]"
23559,"Date: 2021-05
Topic: Is my T15 dead?
### Original post:
I coded it to be correctly fitted ""2021-04-09 15:49:24 <truncated> miner ID : <truncated> 15:49:24 <truncated> FPGA Version = 0xB01B2021-04-09 15:49:24 <truncated> get_hash_on_plug is 0x72021-04-09 15:49:24 <truncated> !! chain[0]is exist2021-04-09 15:49:24 <truncated> !! chain[1]is exist2021-04-09 15:49:24 <truncated> !! chain[2]is exist2021-04-09 15:49:31 <truncated> done2021-04-09 15:49:31 <truncated> chain[0] PCB Version : 0x01012021-04-09 15:49:31 <truncated> chain[0] BOM Version : 0x01002021-04-09 15:49:31 <truncated> chain[1] PCB Version : 0x01012021-04-09 15:49:31 <truncated> chain[1] BOM Version : 0x01002021-04-09 15:49:31 <truncated> chain[2] PCB Version : 0x01012021-04-09 15:49:31 <truncated> chain[2] BOM Version : 0x01002021-04-09 15:49:32 <truncated> chain[0] ok2021-04-09 15:49:36 <truncated> chain[0] ok2021-04-09 15:49:37 <truncated> chain[1] ok2021-04-09 15:49:42 <truncated> chain[1] ok2021-04-09 15:49:42 <truncated> chain[2] ok""is this how it ends as it does not show any issues wrong.do you have a second unit or just the one?

### Reply 1:
Just doesn't seem to ""kick in"" while running. No stats displayed at all.

### Reply 2:
Okay lets try fully removing the center board.Run it with just 2 boards.I do not see any errors in the log.Maybe a weak psu is the issue.

### Reply 3:
You mean it does not have any stats show in the dashboard under miner status? No hashrate, no fan, no detected chains, and no pools?But the logs show normal. Maybe you have a problem accessing the dashboard and it shows nothing?Try to access with incognito mode or other browsers if that's the case. If not work then maybe your miner has a corrupted program and it might need to reflash the firmware to fix this issue. Try to reflash it with this firmware <link> not work try SD card flashing download the ""T15 SD card recovery image.zip"" from this link below- <link> you might be talking about stats on the pool?Incorrect pool setup might lead the miner to stop hashing take so take note of extra spaces and let us know if what pool do you mine.

### Reply 4:
Now it shows no ASIC and you get this ""Hardware Version Socket connect failed: Connection refused"".What firmware do you use? Do you flash it through an SD card or via update?If you flashed it through an update try to flash it with an SD card flashing use the link that I posted above. If it still doesn't work then philipma1957 might be right so try to remove another hash board the ""chain 0"".If it still doesn't work then it might be a PSU issue.Another thing is edit your post and use ""insert code"" for your kernel logs to make your thread clean and easy to read.

### Reply 5:
I've reflashed the software and have disconnected one of the hash boards. Here's what I get now:Miner TypeAntminer <truncated> VersionSocket connect failed: Connection refusedKernel VersionLinux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018File System VersionFri Dec 13 15:46:16 CST 2019CGminer VersionUptime7Load Average0.09, 0.16, 0.08The pool is set up correctly, as I have an S17 using the same details with a different address. The miner status table is just empty.Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 <rest of post truncated>

### Reply 6:
Wondering whether my T15 is completely dead or if it needs a new main board. Can anyone tell from this log?Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4<rest of thread truncated>
","[
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    ""hardware_name"": ""T15"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""center board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
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  },
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    ""hardware_name"": ""hash board"",
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    ""hardware_name"": ""ASIC"",
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  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""main board"",
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]"
15634,"Date: 2015-10
Topic: Anybody solo mining found blocks in 2015?
### Original post:
Did any of you find a block with solo mining in 2015? How much power did you have when you found a block? How many BTC did you earn from transaction fees?

### Reply 1:
See:<link>

### Reply 2:
Check out -ck's solo pool, or there is a thread here about someone finding a block with his antminer;<link>

### Reply 3:
Thanks but I didn't see any real person who mined in that thread as the title says ""anonymous solo bitcoin mining"". I'm looking for personal experiences rather than just block finder's IP. I guess people don't care or want to remain anonymous.

### Reply 4:
You didn't look very hard. Numerous people have found blocks on that thread and did not remain anonymous, announcing who they were and what they were mining with.

### Reply 5:
Many, many solo block finders from ck's solo pool. A few member have even found more than one. There was one guy who found like 5 in a row earlier this spring/summer, it was amazing to see. Most use rented hash I think.Here's a few, read through the thread and there are many more:<link> guys started a thread to solo mine one S3 at ck's pool, and he even found a block: <link>

","[
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    ""hardware_name"": ""antminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": true
  }
]"
16900,"Date: 2011-08
Topic: [SOLVED]I can't access my Boot Device Selection menu!
### Original post:
The button to access my boot menu is F8 as described in the manual for my Asus motherboard. Everytime I boot my system I tap or hold the shit out of F8 to always arrive at a screen that is labelled ""Windows 7 Boot Loader"" or something. I need to boot from removable devices so I can run test out LinuxCoin. Any suggestions?Please don't ask me to edit the boot device priority in the BIOS because that isn't a solution, it's a workaround. Thank you. EDIT: I found the solution and you can read it here.

### Reply 1:
why the hell did you link through he ads thing?people trying to help you out for free and you trying to make money off them???well we all suspected it was a case of pebcak anyways

### Reply 2:
Haha, I just noticed that too.Lots of douchebags in the BTC community

### Reply 3:
Wow....I could not figure out what beef was talking about, then i thought of the solution link, just clicked it. Damn. pff.

","[
  {
    ""hardware_name"": ""Asus motherboard"",
    ""hardware_is_owned"": true
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]"
21115,"Date: 2016-08
Topic: S7 Issues, Batch 2
### Original post:
I moved 2 of my miners from room to room tonight. I had this problem once on Easter and some how resolved itself, but not tonight. My miner powers up and pulls its IP address but it doesn't hash. The green indicator light never starts blinking after the red one goes off. When I am on the main page this is what it looks like.Miner Type Antminer S7 Hostname antMiner Model GNU/Linux Hardware Version x.x.x.x Kernel Version Linux 3.8.13 #22 SMP Tue Dec 2 15:26:11 CST 2014 File System Version Fri Oct 23 17:00:53 CST 2015 Cgminer Version Uptime 0 Load Average 0.18, 0.04, 0.01 The hardware version is missing and so is the CG Miner version. I just ordered 2 new BB boards from bitmain but don't want the down time. These miners don't seem to have a SD card like the S4's did. But can I still flash a new image on a SD card and put it in? I tried the button reset several times, I tried flashing it to default and the newest firmware. I have tried everything have done in the past with my S4's, S5's and even before with these machines. Any suggestions would be welcome.Thanks

### Reply 1:
You should check my post there :<link> problem will affect everyone including you as long as 114.114.114.114 is down

### Reply 2:
Thanks you so much. I took me a bit to figure it out but I got it after about 60 minutes. I have never used Putty like that. So I was proud of myself as well. I sent you a small tip to your BTC address in your tag. Its not much but thanks so much. Status: 0/unconfirmed, broadcast through 6 nodesDate: 4/22/2016 22:56To: lanfeusst <truncated> -0.05000000 BTCTransaction fee: -0.00002306 BTCNet amount: -0.05002306 BTCTransaction ID: <truncated>

### Reply 3:
You are welcome, happy it helped you And thanks for the nice donation too, it is very appreciated

### Reply 4:
Hey, do you have any idea on how to get a s7 board to work on a S9? Bitmain is screwing me on the new board and I want to try to get it running while I wait. If you could help Id appreciate it and tip you again. Thanks

### Reply 5:
Different firmware can't do.

","[
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    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BB boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S7 board"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  }
]"
9233,"Date: 2015-07
Topic: Who is Bitcoinrigs.org?
### Original post:
Does anyone know who runs Bitcoinrigs.org? A brief search here shows that they resell AM and Bitmain gear but are also listed as a possible scam.I got a shipment notification email from them (through stamps.com) that something was coming my way. I didn't open it, but eventually sandboxed it in a VM and looked at it, which surprisingly had my shipping address and the USPS tracking number is valid and shows something moving in their system.I've never heard of these guys before, so I'm a little curious as toa. Who are these people?b. Where did they get my address?c. What the hell are they sending me?

### Reply 1:
Theory: You have high forum trust (default trust list). They're sending you a miner so you can vouch that they are legitimate? Maybe it's their way of marketing their product... Even if you're unwilling!

### Reply 2:
Its a bomb, dont touch it

### Reply 3:
Hmmm! Forward it to some address located in the central US.

### Reply 4:
Here's your guy: <link>

### Reply 5:
FYI looking at his ""executive"" titles and length of time at each, I would HIGHLY question his competency and commitment. Additionally each of those companies IMO might have even been his failed ventures. So be wary. Usually an exec has a few years at each place. AND has his experience prior to being an exec in there.. I have interviewed my bosses for their jobs (All are execs @ the VP/C level) and NONE of them ever had resumes that looked like that linkedin profile.

### Reply 6:
maybe u will receive a brand new miner for FREE

### Reply 7:
Thanks, I'll wait and see what happens.

### Reply 8:
I'm curious to see how this turns out. Please keep us posted.

### Reply 9:
Yea it would be interesting. But keep your eyes peeled. Not the first time someone has gotten a review unit only to have their reputation smeared when the manufacturer scammed people (See AMT's original official unmoderated thread for details)

### Reply 10:
If so make sure you cut the red wire!

### Reply 11:
No! Cut the blue wire!

### Reply 12:
You cut the wrong wire!<link>

","[
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  }
]"
13960,"Date: 2011-05
Topic: How do I figure out what my hashrate is?
### Original post:
I just installed a 6870 video card and want to make sure bitcoin is using it. How do I figure out what my hashrate is?Thanks,Jeff

### Reply 1:
Official bitcoin client can't use your video card. Don't use that client for mining.You should download some GPU mining application like poclbm or guiminer:<link>

### Reply 2:
How is deepbit.net hashrate calculated? It varies a lot, while that reported in my client does not.

### Reply 3:
The deepbit.net hashrate is a mining pool. It varies every time somebody enters or exits the pool.

### Reply 4:
He is referring to his own mining speed reported by deepbit.net, which is based on submitted shares.

### Reply 5:
It's a guesstimation based on the number of your shares received per some time. The longer is your averaging window the more precise results you get.

### Reply 6:
If you look at 5min avg on submited shares it can change a lot, I had 4Ghash/s with 300Mhash/s card in few mins, just got extremely lucky with completed shares.

### Reply 7:
Thanks for the help. I got it going with poclbm. Now I have another issue, though. I'm only getting around 7 MHash/s. I was expecting to get more like 250-400 MHash/s with my video card, as indicated on the hardware comparison form on the wiki. Any ideas? And when I try to increase the ""Engine"" speed in the AMD SmartDoctor it errors out saying that it can't do it for some reason. Any help is much <truncated>

### Reply 8:
that sounds like a cpu miner speed.what miner are you using?i use guiminer and i get 250mhash out of my 6870.

### Reply 9:
Try -d 0 and -d 1 as launch arguments with poclbm. Odds are it's simply using the wrong one. And make sure of course, to have the SDK installed.

","[
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    ""hardware_name"": ""6870 video card"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""300Mhash/s card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AMD SmartDoctor"",
    ""hardware_is_owned"": true
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]"
22564,"Date: 2018-05
Topic: Can't Login Antminer S9
### Original post:
Hello everyone,When i first installed my 2x Antminers i was able to login and to set everything (pool), everything was working fine, now I recently refreshed the page (IP Adress) and it asked me to enter the Username and Password. I typed root for the username, same thing for the password, and it didnt let me login saying it was invalid. It did that on both of the miners. Theyre still working perfectly, its just that I simply cannot login... anyone know why or has any idea of what i should do? Thank you!

### Reply 1:
Possibly hijacked... How are you connected to the 'net? If you aren't behind a secure router your miner can get hijacked via the API that's left wide open with hard coded credentials. So changing username/password in the gui won't do it alone, you need to be closed to outside shenanigans.

### Reply 2:
it is secured... I just tried to login to the second miner and it worked somehow (root-root). but the first miner i still cannot login... thats weird

### Reply 3:
If the situation is accurate, also try logging in incognito mode.

### Reply 4:
Are you using a laptop? Sometimes there's different weird versions of numlock/10 key. I'd open up notepad and type in it to make sure you're not getting any weird characters. Chrome is also a good idea.

### Reply 5:
You can always reset the miner to the default settings and then reset your password. Here are the instructions from Bitmain:<link>

### Reply 6:
If I'm not mistaken, all of the boards, are, from the controller's point of view, identical. Each controller port is wired directly to the first ASIC in the chain and the PIC chip(buck control, health monitor). The boards may look very different but all of that is just tweaks regarding how they are laying out the power Handling and distribution. Moving the boards around should not affect a thing. Maybe you would like to send me those broken boards, if I can't fix them I'll buy them as donor parts boards.

### Reply 7:
I also cannot log on to my 2 S9 miner.Got the IP addresses of the router, miners are plugged directly into the router.Did the hard reset a couple of times. Reset the IP, no joy!The miners seem to be working, receiving and sending packets/bytes.They just aren't working for me yet.When I run windows diagnostics, I get 'devices refuse connection' message.It's like there's a bug in the miner software...This is my very first venture into the mining game and doesn't resemble any of the tutorials on Youtube where it looked kinda easy. Arrhh!

","[
  {
    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
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    ""hardware_name"": ""boards"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""controller"",
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  },
  {
    ""hardware_name"": ""PIC chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 miner"",
    ""hardware_is_owned"": true
  }
]"
21581,"Date: 2017-09
Topic: Antminer S9 won't connect or reset.
### Original post:
Hello, gonna try to keep this simple as far as where i started and where i'm at now. Below are the steps I have done.----Antminer S9 Batch 3, not sure if it works.PSU = EVGA G2 1600W, it works.Standard CAT5e Cable, it works.I plug in the 9+1 power cables and the ethernet cable directly from router to miner.Turn it on, I get an immediate Fault light (red), fans spin full speed and they stay at that RPM.No LEDs from the hash boards (from all 3)The ethernet controller ORANGE LED blinks, but the GREEN LED does not stay lit, it does blink every now and then. I check my router settings to see what connections my router is seeing. It only sees my computer connected, nothing else.I attempted to ""reset"" the miner, I hold the reset button for 5 seconds.... 15 seconds.... 30 seconds.... 45 seconds.... and nothing. Nothing happens.I sent a PM to Phil* for some advice, He informed me to drop all connections from my router and only connect my computer. (In hopes that maybe the miner is being assigned to a duplicate IP that is already connected to my router). I did this, checked router settings and made sure that its only seeing my desktop computer connected.Turn on the miner, and no new connecti<rest of post truncated>

### Reply 1:
We spoke on pm. I have not had your issue since s-3's and I was on 192.168.0.1 the s-3's were on 192.168.1.1.It has been 18 months since I have had wrong router 0 vs 1 issue. The op got this second hand so I thought it could be set to static address. Anyone know how to help op on this style controller?

### Reply 2:
If it is finding the IP you can try with Bitmain's IPReporter. I really like just going into router and finding it that way myself as if you know your router it is not bad, but some have good results with Bitmains IPReporter. Check out page 9 on official instruction's - <link> would focus on trying to find IP first before going after reset. But if you have to reset below is how they say to (I have not personally reset a S9 so all direct from manual in quotes as Bitmains words I take no credit)""To restore your initial settings1. Turn on the miner and let it run for 5 minutes.2. On the controller front panel, press and hold the Reset button for 10 seconds.Resetting your miner will reboot it and restore its default settings. The red LED will automaticallyflash once every 15 seconds if the reset is operated successfully.""But to recap I would try again on finding IP. Focus on that first as you should not have to do a reset when you receive it new (assuming not 2nd hand).

### Reply 3:
Already tried all of this. IPReporter does not work. Reset button does not work. *And also looked in my router settings after unplugging everything from it except my main computer and it shows no new connection to my router. Only my computer shows up, nothing else.

### Reply 4:
I would disconnect the Hash Boards data & power connectors. Just connect power to the controller and ethernet to the Router. Power up and then hard reset the controller. If it does not show after that then most likely you have a faulty controller.Rich

### Reply 5:
Thanks for this advice, I was actually going to try this today. Im going to test another PSU on another router to see if it connects there (maybe issue with my router) and if nothing, im going to try this.**EDIT**Tried it, no luck. Brought it over to my gfs and her router is setup under 192.168.0.1 and no luck on that router either. I DO get a different blinking pattern on the miner though, the Orange and Green LEDs blink at the same time, at same pace on that router but when looking in the router settings it shows no connection. Resetting still does not work and nothing changes when power in the hashing boards and when their unplugged.

### Reply 6:
I have exactly the same problem, please help...

### Reply 7:
What batch Number? My batch 9 now has a dead controller.do you have this kind of controller? 1 piece style?

### Reply 8:
same problem here. all worked well until the latest FW upgrade. All went well but now I just can't find my IP nomather what...any sugestions are velcomed Thank you

### Reply 9:
look in the mirror and yell at yourself for doing a firmware update.--- Next download advanced ip or angry ip both can scan for ip'sturn off every single thing you have hooked up except the miner and 1 pc .the pc you have advanced ip or angry ip use that toscan and hope you find the controller.

### Reply 10:
Way ahead of you!I allready tryed the yelling in the mirror thing several times today but no luck! I'll try the advanced IP or angry IP sugestion and post a feedback.Hope all goes well.What can I say? best 2000 USD ever spent.Thank you for your adviceP.S. sorry for my bad english, it is not my first language

### Reply 11:
Tryed advanced IP, then again yelling in the mirror, then reset again... nothing !Now it's working just fine with the controller from another unit.So I guess RMA it is! <rest of thread truncated>
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3878,"Date: 2015-10
Topic: [Group Buy] AntRouter R1 - .185 BTC - In stock - Custom Firmware Optional!
### Original post:
Custom Firmware available!I've delivered my first custom firmware release to existing customers, which can be loaded on new orders upon request. However, please note that loading custom firmware will void all warranties. Custom firmware includes: - Configuration for up to 4 pools with full Bitmain solo mining support. - R1 Frequency and Voltage modulation (Use at your own risk)- Detailed R1 stats page, including pool statistics

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11932,"Date: 2012-06
Topic: BFGMiner modular FPGA/GPU overclock monitor fanspeed GCN RPC Linux/Windows 2.4.2
### Original post:
You need to update your git links to gitorious coz there's no links to the source code in the first post any more ...

### Reply 1:
Thanks, I pushed the latest code to GitHub. Note the tbz2/zip source links should have worked too.

### Reply 2:
NEW VERSION - 2.4.2, JUNE 2 2012This release cycle, I finally got around to cleaning up the old (from cpuminer days) ""work_restart"" flag array that indicated longpolls to the actual mining threads. This should have been totally uncontroversial, as it has no practical behaviour change in itself, but Con decided not to pull it in favour of a more complex and less efficient solution that probably nobody will ever care to write - too bad he didn't bring that up when I'd discussed making this change a month or so ago. As a result, cgminer and BFGMiner have drifted further apart for what I think is fair to describe as no reason whatsoever. It also means cgminer 2.4.2 doesn't have the new functionality based on that cleanup (also to blame is Kano removing epoll support from the Icarus driver in past releases): BFGMiner 2.4.2 no longer sits in a loop of ""wait for data from Icarus; check if there's a longpoll; ..."" on Linux, it simply sleeps the full timeout (11.2 seconds generally) and is interrupted by the operating system if the Icarus finds a share or a longpoll occurs. This might seem trivial, but should shave some small percentage off longpoll stales and improve CPU time on low-powere<rest of post truncated>

### Reply 3:
How about some screenshot action. This is what keeps happening, and this time I decided to make a core dump of the process. The command window when I found it was not accepting button presses, so it seems that the mining process had frozen entirely. Since the U number was so low, it was obvious that the process had continued to run even after the unit stopped hashing, and froze much later - the U is normally around 11-12, and the average hash rate is normally around 865 not 675. As you can see from the screenshot, the last LP that it reported before it froze was at 13:53:09 Eastern Time, and it had stopped considerably before that although I'm not sure when. Screenshot was taken at around 14:30.In addition, the secondary internal red light on the BFL unit was steady on, and not blinking every 5 seconds as expected. It also was idling and not running at full burn or stuck in a loop. Normally when the machine is idle, the internal red light goes dim.I am not sure what the core dump contains, so I won't post it, but if Con, Kano, or Luke-Jr want to see it just ask and I will send it over.

### Reply 4:
This is a BitForce FPGA, correct? You can send me the core dump (I imagine it's too big for email), but I'm not sure it will be of much use since you're running on Windows - perhaps I can pick out some strings from it. It does contain all your pool login info, note.

### Reply 5:
I'm working on something for that.

### Reply 6:
Yes it is, and the GPUMAX login for the worker is different than for the website login, so not a problem there. Dump is 20ish MB, I'll see if I can upload it somewhere and give you the link.EDIT: Not sure if the dump is any good, when I open it in Visual Studio, it says: You cannot debug a 64-bit dump of a 32-bit process, you must collect a 32-bit dump of a 32-bit process. But I'm not sure how to do that.

### Reply 7:
What's your plan? Fortunately this time I caught it after about an hour of downtime, instead of last time where it was down for several hours.And this time the window hadn't frozen, it accepted my 'Q' to quit just as normal.

### Reply 8:
it's here right now:<link>

### Reply 9:
I plan to release BFGMiner 2.4.3 soon, but I am hoping to address some reported problems with the modminer driver first. Apparently between the time I finished writing the driver (when it worked), and the time CGMiner 2.4.3 was released with it, something got broken.

### Reply 10:
When I run bfgminer on windows 7 64 with my single I get Icarus Detect: Failed to open bitforce://./COM4. Can anyone help me on this.

### Reply 11:
Hashking, Have you ever had any version of cgminer or bfgminer working with your Singles previously?Does EasyMiner (<link> show your Single on COM4?If not, you may not have the FTDI virtual COM port driver installed. You can nab them here: <link> you are running GPU's along with your Single in the same instance of cgminer, you might want to try running separate instances of cgminer: once instance for your GPUs and a separate instance for your Single(s).You might also try simplifying your command line to '-S COM4' instead of '-S bitforce://./COM4'; I am running cgminer 2.3.6, 2.4.1, and 2.4.2 on Win7/64 machines with ONLY Singles (no GPUs) and I've never had to specify 'bitforce:' on my command line. Also, the long-hand form of '//./COM4' is only required for COMxx ports where 'xx' is '10' or higher.Tha<rest of thread truncated>
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16754,"Date: 2011-07
Topic: Guiminer + phoenix, hanging
### Original post:
Several others and myself are having some issues with Phoenix under GUIminer hanging. It looks like it's related to connection problems. I will come back and see one or two GPU's (out of many more that are still connected and working) stuck at ""connecting"" and sometimes they will have been stuck for hours. They will start immediately if manually stopped and restarted.This happens with 1.48 that's included in 6/14 and also 1.50.Is this a known problem? Any fix?

### Reply 1:
this means you overclocked your cards too high, try lowering the clock speeds. If you don't overclock, it means you have a temperature problem

### Reply 2:
well that's weird, because I had the same issue, only I rebooted my computer, and it's been idle all day, so my temps should be back down to ambient, but I get the same issues, (ie, it won't start even after being idle forever). I haven't had a chance to get home to see in person, this is all remote so far. So in case my cards went kaput, I'm at least getting video over RDP. Soon as I get home I'll try to launch a video game and see what's up. It is getting super hot here in kansas, maybe my AC died at my house... but won't know anything until I get home so meanwhile I'm not generating any btc

### Reply 3:
I'm starting to have the same issue. I have 3 5830s mildly overclocked running the same speed. One card will sometimes get up to 71C max but it usually isn't the one that craps out. Sometimes it happens to all 3 and other times it will just happen to one or two. Guiminer will say ""connecting"" and stay like that until I hit stop/start. Then it's fine again.

### Reply 4:
1) lower the core clock by 5 MHz2) press start button to begin mining again3) check a few hours later to see if it still says ""connecting""If not, you're golden, if it still says connecting, go back to step 1 and repeat

### Reply 5:
I'm having the same thing with my 5850's except I have them running as hard as I can (900MHz).Works all night fine but then the sun comes up and I start having one drop out.It's never the hotest GPU either wierd.I dont want to bring the core clock down so I guess my only option is to try and improve airflow ?

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15778,"Date: 2016-07
Topic: Electricity backup for antminer's
### Original post:
Hello everyone i just bought two antminer s7's. Where i live, i have to pay very less for electricity. But the problem is the electricity uptime is very poor here, i face 5 to 6 power cuts a day with around 40 minute to 1:30 hours. I want to ask what kind of backup power should i use. i am thinking about getting a 3kva inverter. Please suggest me other options.

### Reply 1:
Inverter is not a power source, it is just an inverter. I guess you meant solar panel and inverter?That is way too expensive and no guarantee that the sun will be ""working"" when there is no power.I advise you to just enjoy when you have that free electricity and ""suck up"" the no electricity periods as cost of doing business there.If you can get free gasoline too you can get 3-4KW generator, but I wouldn't.

### Reply 2:
Agreed, fueled generators are almost going certainly going to cost you more than it is worth to keep them running. You need a battery backup/inverter system to charge while power is up and discharge when it goes out. Lithium Ion batteries are the only real option, I did a lot of research into viability of battery backup and it is unlikely to be worth it.10kWh battery = ~$3000usd (I've seen some cheaper on alibaba)Inverter = ~$600usdBackup power (2 s7's @ 1250W ea)= ~3 hrsKeep in mind they take time to charge up, if you're suffering clusters of outages (I would assume so, during peak usage periods) they're usefulness will be decreased even more.

### Reply 3:
Chances are you will be better off looking for a hosting center vs something that can power 2 S7's for up to 1.5 hours a day. Your just talking about a lot of watt's and a long amount of time. If you look at battery backups I think you will see cost of one that is capable of this just will not pay off. It just will not make sense financially buying a system capable of doing what your looking for. Also what country are you in? Just curious with losing power so much.

### Reply 4:
just go door to door at your local warehouses and see if anyone is replacing their forklift batteries anytime soon.offer a bit more than scrap value, or less but arrange pickup (or disposal)most employees are just happy they dont gotta operate the machinery to replace or remove these units and they are decent at holding a charge for home or modest industrial backup purposes.

### Reply 5:
Thats a good shout, I would probably buy an old APC UPS off eBay that has got dead batteries, then wire up the UPS to the old industrial batteries and let it do the work.It will then kick in when the power fails and automatically recharge when it goes back on again.

### Reply 6:
I think it's going to be hard in most cases to get a UPS/Used battery combo for a decent price. Keep in mind were talking running up 2800 or so watts for 40 minute to 1:30 hours. So that is a good amount of energy that needs stored.So good idea looking for lower cost solutions. But I still think you will pay more then what you make over that 40 minute to 1:30 hour per day. Just a lot of cost for not a ton of pay I'm guessing in almost all cases.

### Reply 7:
easy answer is apc ups but you need the big boy with 2200 va, the SMT2200I should be okit has a pure sinusoidal wave with lcd, can sustain 2kw for 30 min

### Reply 8:
There is no use in using a battery backup for loads like miners. According to APC.com you would need:APC Smart-UPS SRT 5000VA 208V + (4)SRT192BP Battery Unit (calculated runtime @ 2800W is 126min)So you would need $4,000 + 4x($1,000) or basically $8,000 worth of APC UPS gear to ""do it right"".Also, with that many regular power outages plan on replacing batteries often!You can ""homegrow"" your own solution, but batteries will need constant replacement and the reality is UPS is just not worth it!

### Reply 9:
It is a case of the cost of keeping it operating just is not worth it due to earnings. Even with ""homegrown"" I think it will take a good amount of time at 40 to 1.5 hours a day to pay for setup. We just don't see people doing this due to costs.OP what country are you located? And if I can ask what is your electricity price? (asking due to power cuts)

### Reply 10:
he's probably trying to save his hardware from the stress of these power spikes and losses. not just getting that extra time of mining in.if a ups system facilitates his ability to mine, sure its worth it with the right electricity cost. just be resourceful about it.you can fry equipment pretty quick exposing it to that kind of environment.

### Reply 11:
maybe you should use cloud mining because the electrics will cost a huge tax when using btc miner antminer and others.

### Reply 12:
The only winner with cloud mining is the cloud mining company. It also promotes centralization. No point in supporting it when the OP is willing to support decentralization.

### Reply 13:
Mining is dead. There is a lot of variable on the financial. Price , electiricity , diffuculty ....

### Re<rest of thread truncated>
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20176,"Date: 2015-01
Topic: Bitcoin Miner WIFI
### Original post:
I am thinking of purchasing a miner ( as i have 300$ left over on amazon and have no use for it ) but I would like it to be WIFI accessable. What would I need to let it use my WIFI? I know I need a antenna but what kind?<link> These are the two that im looking at right now. Could anyone help me get everything that I would need? I would really appreciate it.Thanks

### Reply 1:
For S3 you will need an ""IPX to RP-SMA Female Adapter Converter Cable"", like this one: <link> need to connect this cable to the connector at controller board with it's little connector, and to big one connect any RP-SMA antenna, for example:<link>

### Reply 2:
ahh okay, thats for the first one. Since that is the S3. Thanks a bunch. Ill be ordering that right now:D

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10544,"Date: 2017-09
Topic: Voiding Bitmain warrany
### Original post:
Hello, does anyone know if the Bitmain warranty would be voided if i install something as simple as a fan filter for intake fan?Something like the one below for example.<link>

### Reply 1:
you will overheat the miner.and if the screw has the warranty sticker you will void the warranty.run the gear 90 days if it has a 90 day warranty.then remove the fans and clean the miner.run the gear 180 days if it has a six month warranty then clean it.you will have to clean an s-9 90 to 180 days for dust.unless the room it is in is dust free.

### Reply 2:
You can do the old school panty hose trick... Hardly any delta p but with particulate trapping you're looking for! I do it on my R4 (got dogs and Los Angeles chunky air so anything with a fan gets nice and fluffy with gunk) and you just change it out when looking like it needs it.

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9374,"Date: 2015-09
Topic: Custom Miners Supposedly Better Than S7?
### Original post:
I was shown a miner designed by a company that designed ""custom miners"" that supposedly draws 0.100 Watts per 1GH/s and seems to be way more cost/efficient than the S7. Several people have said it looks to good to be true. Has anyone every heard of stuff like this or tried it? A friend ordered one and is going to try it. If it works I will let you know.

### Reply 1:
of course it is too good to be true,but there is no doubt that bitmain is making hell of profit on those manufactures...can you pm me some details of it.

### Reply 2:
Which company is it?

### Reply 3:
Probably not valid. There has been at least one scam based on the specs of KnC's ""solar"" chips..1W/GHs isn't even close to any of the announced but ""not seen in public"" 14/16nm chips, and is quite a bit better than any of the 28nm chips that have been seen or announced. Odd point for someone to be claiming....

### Reply 4:
possible but it will have a premium price!so in the end it's not worth!

### Reply 5:
Interesting. I'm glad everyone else here has confirmed what I have heard and that it sounds completely ridiculous. I can't believe my friend is going to spend the money to see if this thing is real. If it is, I will tell you what it is called - after I have cleared out their inventory .

### Reply 6:
So you are not going to tell us? Is it a preorder or has your friend hands on it?

### Reply 7:
I will tell you but if I put a link here now I'll never get a chance to buy one. He is going to let me know if it works and I bet they will get some more orders if it does. After that, I will post it here. Don't want to spoil it for him.

### Reply 8:
I would personally post before your friend invests a lot. A ""custom miner"" with great stats sounds like a scam waiting to happen.If he does invest make sure he sees the hardware work. Not just renderings of the miner.

### Reply 9:
Don't post the link here. The miner is fake, the company is a scam, and your ""friend"" is most likely trying to con you out of your money.

### Reply 10:
I have to agree with OgNasty. If the company and it's product must remain ""secret"" for it to be viable, then it almost certainly is a <truncated> Anybody with a legitimate product will open their product to some kind of scrutiny. Folks that want to operate in the ""dark"" do so for a reason, almost never a good one.

### Reply 11:
It's odd he brought it here. As custom miners are really not something anymore. During GPU day's is only time I can think of ""custom miners"".You could order a GPU machine built to your specifics with X cards. But in the day's of asics its really all mass produced with a few exceptions.

### Reply 12:
One possible scenario I can imagine: Just put some old dragon hashboards to one big enclosure,and you can easily have 4.2 TH miner. It sucks 4kW from wall but if buyer doesn't know that,who cares.

### Reply 13:
It would be kinda a jumble of wires with this. And the weight of all those heatsinks would make it a hard sale on shipping. I had the 1.5TH dragon that thing was the most heavy miner I have shipped yet it was around 45 or so pounds I believe. In the 1.5 they put bigger heatsinks and it showed when I went to ship it to a buyer.I think long ago there was a 3d printed custom one I had forgot about. They took a few block erupters and put it in a case with RPI and made it seem like a special custom miner. So I guess it has been done before, just not many times. They charged a pretty penny back in the day for that one.

### Reply 14:
Thanks everyone. I will make sure it is legit before I recommend it to anyone. I won't propagate anyone else's scam. Other people have also told me it sounds like a scam. The guy who ordered it also said it seems impossible.

### Reply 15:
Continuing my post: it doesn't matter if it is a scam(yes it is!) or not, the price will be to high to be worth investing.Is like sp50: u have only 5kw available at home and say 10k in the bank......

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16172,"Date: 2021-12
Topic: Mining container recommendation
### Original post:
Hello, im in a project on my country to mske one 4Mw btc farm.Im looking for mining container, ready to install around 300/400 s19 on each container.I wal looking on Google and exist a lot of suppliers with different products.Anyone have some seller to recommend?Thanks

### Reply 1:
mining container use different electrical rules when constructed. Best to seek container manufacturer in your own country or in the same region with the same rule. You want to avoid a bad news from customs or local utility company that you can not import it or not able to use the container due to different electrical safety requirements.Did you think about DIY?

### Reply 2:
What country are you in, we might be able to provide remote engineering support.

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    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  }
]"
15844,"Date: 2016-12
Topic: Few basic random questions about bitcoin
### Original post:
1# In general how do miners pick a nonce? Obviously if everyone started at 1 only the fastest miners would win. Do they just pick a random very large number and start incrementing from there? How often do they update their block (if you do it with every single new transaction the instant it comes in it seems you might take a performance hit on your hash rate).2# Once a miner solves a block, how can they prove it was them who solved it? If Bob tells Alice the solution, what stops Alice from taking the solution and quickly trying to tell more people quicker it was her who solved it?edit: Removed two questions above as the miners use their own bitcoin address to create the header hash which is used to solve the block. 3# Seems the single largest miner is about 20% right now. Let's say I want to know how safe I am after 5 validations in the worst case scenario. Does that mean .2^5= 0.00032 (aka 0.032% or 1 in 3125) is the chances that a block with 5 validations will later fork if that 20% decided to try to cheat the system at that moment?

### Reply 1:
You are correct that there is a 0.032% chance that a 20% miner will solve 5 blocks in a row. In doing so they were pretty lucky and made a lot of BTC for their efforts.So your next question would need a bit more detail. Given that they just made about $50,000 please explain what they would do to ""cheat"" that would make economic sense. In order to make economic sense they would have to be able to make way more that $50,000 by cheating.

",[]
9915,"Date: 2016-07
Topic: Modding VR control on the s9?
### Original post:
Reserved for later thoughts on this.

### Reply 1:
Man I could use a drop from .1 to .085 watts a gh.let us know.

### Reply 2:
Has anyone paid attention to the power input area of the s9 hash boards? This detail I took from the pic of of the s9 board posted in the ad for it shows:In the lower-left, doesn't that look suspiciously like a programming port for a voltage controller? The switching FET's are there under the heatsink (nice touch!) as well as a honking big inductor so I have to assume that the s9 does use a buck regulator.Hmm. Curious minds have to wonder what might be done with that...

### Reply 3:
It is an ISP header. I pulled firmware off the first one to come in the shop back in Batch 1, but since it was a customer machine I wasn't authorized to do anything that would void the warranty. Only enough to get the chip number and a firmware dump. I haven't seen what it'd take to modify my S7 firmware for an S9 but it's probably not difficult, I just don't have one to test it on.

### Reply 4:
Tell ya what, I'll be getting 2 more when Bitmain has more s9's for sale so how about I have one drop shipped to ya to tinker with?One thing I'd like to be able to tweak is the starting voltage. On my batch-1 and one batch-3 it usually takes a couple reboots to get all the cards firing on all cylinders. On the b1 it is card-3 (the usually hot one) but oddly enough on the b3 it is the middle card that needs a few restarts to get up to speed.

### Reply 5:
Sounds like good times.

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21792,"Date: 2017-11
Topic: Suggestions for PSU and racks
### Original post:
I'm trying to get 25-30 antminer S9s to start mining. I've had trouble finding reputable PSU suppliers for them, was curious if there are any legit ones out there. Also, I'm looking for some suggestions for racks. I'm not looking for real server racks, more just **shelves** that work.

### Reply 1:
parallelminerI have a discount code shoot me a pmebay sellers for the racks I have a link shoot me a pm

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10040,"Date: 2016-10
Topic: Antminer s9 hashing board capacitor dent
### Original post:
Bought myself an antminer s9 from aliexpress come to setting it up and one of the hashing boards doesn't seem to be powering up, when i logon to the miner via my internet browser i can see boards 2 and 3 hashing away as they should but its like board number one isn't even connected so i switched some wires round to make sure they was all good and that it was not the psu and realized it has to be the hashing board thats faulty so ive taken it apart had a look round and there is a dent in one of the capacitors<link> <link> so im thinking this is my problem, anyone with a bit more knowledge than me id appreciate it if you could tell me if this is my problem or not? and if this has likely caused any more damage to the hashing board perhaps? or if a simple capacitor swap will do the trick maybe? ive only just got the miner so it should be still under warranty, this is the seller i got it from ""BitPowerOn & EastShore Mining Devices Store'' so i should be able to just send the hasing board back then they send me a new one or just fix it, or do you think its worth just doing it myself and saving hassle of shipping back and forth?BTW im a bit sketchy from the people i got it from as well as<rest of post truncated>

### Reply 1:
My guess is they did pull a fast one on you intentionally. I am not sure what returns on aliexpress look like so maybe you have some recourse there, but since you did not buy it direct from bitmaintech I would say there is no warranty you can rely on (plus the bitmaintech warranty is questionable anyway). Bitmainwarranty based out of Denver (not to be confused with bitmaintech based out of China) could probably tell you if that dent is likely to be the issue and could also possibly repair the board (depending on the actual problem with it) for a fee. So yes bitmainwarranty, despite having the word warranty in the name, is a fee based repair business. But on the bright side they operate with a high degree of professionalism, they are timely with repairs and communications, and they are based in the US, so for US miners they are a very good option for stuff that isn't covered by the actual bitmaintech warranty.

### Reply 2:
thats what im thinking, they tried having my pants down the cunts, this is where im unsure on what to do thought with ali express i can open a dispute get a full refund and send the item back or keep the item and get a partial refund?! i cant decide, if i could just replace the capacitor and everything be fine and dandy id do that and get some of my money back, there is an electronics work shop at work so i can do it there but id like to know if anyone this this will solve the problem or if anyone knows if the damaged capacitor could have caused further damage? yea i have no official warranty with bitmain but i do have some with the seller so they say, also im from the UK not US unfortunately. just not sure what to do id have to pay as well to send it back to china for a full refund so thats probably 30-60 quid down the drain doing that

### Reply 3:
basically you got f''d. I have not done any business with ali-express not sure how they warranty gear.So check with seller see what they say.Check with ali-express see what they say.China --- bitmaintech.com they may do zero for you as it is not under warranty from them. They say send none warranty gear to bitmainwaranty.com for repair.USA----- bitmainwarranty.com they will fix for a fee. --- my best guess is try for them to repair it -- try for seller and or ali express to spring for repair.Good luck and please follow up if you can . Please let us know if someone helps you.

### Reply 4:
it seems a bit like how ebay works it seems quite good, i have uploaded pictures of the damage and stuff for the case ive openedive opened a case and requested for a full refund and for me to send the item back (as a preferred method)the second proposal i made was a partial refund of 1000 pounds and i keep the item and i pay to get the hashing board fixed (take it to work and replace the capacitor and hope it solves the problem, if not send it off to an expert. they have 5 days to reply.yea ill update as i go along, just be careful anyone else ordering with that company on aliexpress, the seller has good feedback 98% or something and they specialise and sell a range of miners but there is no denying here they have tried to scam me, and they dont seem to be responding to me now, if i left it longer than 15 days i wouldnt have been able to open a case and i think thats what they was trying to do just delay it all! ill update as the situation moves on!

### Reply 5:
thanks for your input pal, it was paid by card but aliexpress hold the funds until good feedback is left or until any disputes have been resolved i thinki think im able to get a refund i just need to send the item back thats alland ill have another look at the board, the only damage i saw was that capacit<rest of thread truncated>
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17323,"Date: 2012-12
Topic: Fixing GPU Fan?
### Original post:
I did some maintenance on my mining machine this weekend, and I noticed that one of the fans on my Radeon 5870 is failing. The fan sporadically stops and starts again, and when it is running it doesn't run very fast. The other fan on the 5870 is running fine, and the 5870 still works once cgminer throttles the card after detecting the overheating and failing to increase the fan speed. I only lose 90 mhash/s from cgminer's throttling.In my mind I have two options to rectify this:1) Fix the fan on the card.2) Buy a new card.Even though Option 2 is in the realm of possibility, I'd like to go with Option 1 because the card still works, it just needs the fan fixed. However, I have no idea how to fix the fan. So I have two questions:1) Is there a good reason to go with Option 2?2) How do I fix the fan on the GPU?Thanks in advance for your help.

### Reply 1:
Your first question should be ... should I even mess with a broken GPU for mining?And that would depend on what you pay for electricity, as in a few hours your mining proceeds will drop by half, making GPU mining unprofitable for anyone who pays more than maybe seven cents per kWh. Following that in a matter of weeks will be ASIC shipments, which will be the final nail in GPU mining's coffin.If you want to repair it for sale or for whatever reason, here's a source for parts:- <link>

### Reply 2:
Is this a reference design 5870? I may have a replacement fan if you want one. I have revived dead fans by drilling a small hole in the fan to add some mineral oil. Not completely dead fans but ones that are starting to make noise and/or slow down.

### Reply 3:
I never messed with reference fans - they seem to be much better quality vs 'aftermarket'Since its almost impossible to find them online or they cost too much (<link> I decided to fix 'em myselfBTW, it's not a fan that fails, it's the oil lubricant drying up. Here's a quick procedure, if there's more interest i'll post pictures1) remove the cooler2) unscrew/remove a bad fan3) be very careful here - you'll see open space all around where fan connects to the power. Insert a flat head screwdriver and loosen up the fan from the base. 4) when separated, pour tiny bit of vegetable oil into a small socket where fan pin goes in.5) put it together and spin the fan with your fingers. It should be as good as new.I've fixed 4 fans so far, all of them going strong for months.

### Reply 4:
I have Only done this to reference fans.

### Reply 5:
Option 1 is not very hard to do, even a caveman can do it. I had a similar situation, and I went for option 1 after purchasing a fan off of Ebay. It was not hard at all. It was just a matter of unscrewing the top from the main body of the gpu, and unplugging the fan cord, and doing the same steps in reverse order.

### Reply 6:
Btw, assuming that you've had your GPU for awhile now, you may want to try to clean up your GPU's thermal paste, and reapply non-conductive thermal paste, which will help your GPU run much cooler too. It's not very hard to do, and only requires a couple extra steps, but in the long run you'll see significant benefits from doing this.

### Reply 7:
Exactly what I do. I have recently figured out how to pop open fans now too with better success rate, but I do that only as a last resort (i.e. I drilled a hole but theres a plastic chunk that rubs inside the fan and I need to remove it)

### Reply 8:
I just did this for a laptop fan for a customer a week or two ago. Normally I like to remove the fan to re-oil it, but this Lenovo was a PITA to take apart, so I just drilled it and taped it up after. Works like a charm.

### Reply 9:
Use a piece of tape that wont unstick. I find scotch wont hold a seal vs. oil, but electrical tape will hold its seal.

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11916,"Date: 2012-06
Topic: BFGMiner modular FPGA/GPU overclock monitor fanspeed GCN RPC Linux/Windows 2.4.1
### Original post:
NEW VERSION - 2.4.1, MAY 6 2012While Kano continues to try rewriting his own hashrate measurements for CGMiner's Icarus driver, BFGMiner's Icarus driver was already (and still is) more accurate. I did take the opportunity to give it even more specific calibration, though.As BFL+Icarus owners might have known, BFGMiner has worked with both devices together from the start.Finally, Kano recently injected RPC API code through the device driver API in CGMiner. While I made an attempt to sanitize it upstream, Con didn't merge it in time for 2.4.1; BFGMiner of course includes this cleanup, since it is important to a sane (and secure!) device driver API.Human readable <truncated> won't crashA pool will only be disabled if it rejects shares for at least 3 minutes in a row. Then it will be checked every longpoll to see if it is accepting shares, and if so, will be re-enabled.More accurate hashrate on IcarusZtex quad 1.15y supportExtra device stats in RPC APIFull changelogIcarus: Calibrate hashrate yet even more accuratelyIn the unlikely event of finding a block, display the block solved count with the pool it came from for auditing.Display the device summary on exit even if a device has been<rest of post truncated>

### Reply 1:
are there any plans to add the option to cpu mine with windows?

### Reply 2:
I don't want to make it too easy for botnets to abuse BFGMiner. Is there a legitimate need for CPU mining for people who don't know how to compile themselves?

### Reply 3:
yes, my friend says he gets 30mh/s with his cpu. every little extra bit helps imo.

### Reply 4:
The electricity to mine 30 MH/s with a CPU costs more than you'll get.

### Reply 5:
not if you're someone like me that thinks the price of bitcoins is going to skyrocket some day.

### Reply 6:
If you believe that, then you would of course have no issue with buying a $100-$200 GPU that will mine bitcoins 10-50x faster than your CPUs and thus also make CPU mining pointless.

### Reply 7:
Also, search for pooler's fork of cpuminer. It's been better optimized than what is in cgminer' sources anyways. Maybe you will get 40 mhash/s instead of 30!

### Reply 8:
then buy some, it's more efficientso say instead of spending extra $50 on the power bill just buy $50 of bitcoins so you get 10 bitcoins instead of like 5 that you would have gotten if you were cpu miningthis keeps the difficulty down for the rest of us

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16964,"Date: 2011-10
Topic: Xfire bridges
### Original post:
Currently I have all my cards linked together with xfire bridges and im reading threads saying if i remove them i will get faster hash speeds. Is this right.I run windows 7, use guiminer, the new ati drivers and sdk and do all my clocking in trixx.I dont want to have to start messing about with trying so if anyone could confirm its an advantage to do that would be awesome.Cheers

### Reply 1:
i'm actually amazed you got that many xfire configureations working properly, yes removing them will simplify things and should help your performance

### Reply 2:
I *think* trixx will only see the first card if not in xfire.....if that's the case use MSI Afterburner...it will sync the clocks across all cards regardless if they're in xfire or not

### Reply 3:
It's not trixx sees all six 5830 in one if my rigs no xfire bridges needed,

### Reply 4:
the latest version of trixx will see all your cards on your system, but earlier version did not.

### Reply 5:
There is no ""Messing around"" about it! You slide the bridges off, this will automagically disable CF in CCC. And, you're ready to go!

### Reply 6:
Mine are all bridged.. If i turn on catalyst and set stuff then turn it off all 4 cards are still detectable by miners...only thing is if i turn overdrive on and off it doesnt keep voltage overcharge

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9810,"Date: 2016-05
Topic: avalon 6 controller
### Original post:
i cant find this listed anywhere, and i havent had one so i dont know.i do know that they use an external controller, a rpi.my question is if i compile cgminer, will they run off a laptop usb?

### Reply 1:
You need the little dongle also to convert from I2C (or SPI, I can't remember which they use), to Serial - but a PC can certainly communicate with them then. Avalon supplies tools to diagnose the boards that run on the PC, and I used them to check cores before.Now, whether or not they latest driver code is part of the CGMiner tree, I don't know - but if you don't have an RPi, the easiest thing to do is probably just to compile it and see, if I remember correctly the dongle just enumerates like a normal USB serial port on Windows, so it's probably the same on Linux.Hope that helps...

### Reply 2:
yes that helps a lot. thanks.

### Reply 3:
the kit<link> need the kitas the software on the rasp pi interacts with a daughter board in the miner

### Reply 4:
tip if you want to use any pi type and don't care if it has there version of openwrt, would rather use minera etc or your own made up GUI or cgminer on a laptop with windows like you want to all you need is the dongle that converts from I2C/ SPI, to Serial and cgminer with the A6 driver turned on. and you may need the one they made for the A6 not the A 4.1 or buy one then program it, which might not work either if you don't know which dongle or chip they use i found out the hard way. it's very cheap on line to buy, the shipping might even cost more then the A6 dongle, any cable/s that fits it, should work.here is there cgminer fork for the A6 <link> This might tell you a lot to: <link>

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10844,"Date: 2019-09
Topic: Ebang Announces E9++, E10, and E10.1
### Original post:
Considering this is 10nm the efficiency is pretty underwhelming.

### Reply 1:
AND it is just a PR pitch.Maybe - just maybe - they have Engineering samples to tinker with but that is a far cry from anything even close to production status.Again it MUST be emphasized that 10nm miner chips are a long way off. As said elsewhere, the '10nm' chips used in the latest Galaxy and iPhones are cheaters - only memory cells are 10nm. Toss in that that these nodes are targeting mobile apps - read as low-power - what is possible with a chip pulling under 500mw is a helluva long way from one pulling 10W or more. Just as happened at 16/14nm ya know they are going to pack in as many cores as possible meaning many watts of power per-chip.

### Reply 2:
I have someone on the ground there who has seen the live demo in person, he is sending me the info live as its happening. They announced production is starting in January. Apparently Samsung was involved in the creation of the chip.

### Reply 3:
How long away are we talking about?

### Reply 4:
Maybe you are missing something there? First and third picture are the same? Maybe you have pasted wrong link or something like that...I have just seen those pricing numbers.. 4043.48 for 14 TH/s and 5198.76 for 18 TH/s , IS THIS FOR REAL?

### Reply 5:
No I just pasted the wrong link, let me fix.The RMB number is what they quoted at the show.

### Reply 6:
Direct from the trade show.Ebit E9++<link> E10<link> E10.1<link> is RMB1900/THwhich is almost 30% more than bitmains current pricing.

### Reply 7:
RMB1900 per TH? its around USD288 per TH. whoa

### Reply 8:
Just had a message from Ivy,"" just now got a news from our management: E9++price is 3680$ per unit. PSU is 100$. E10 price is 4980$ include the PSU. MOQ is 100PCS, delivery time is end of Jan.""So I suppose , if people want to buy then group buy ?

### Reply 9:
i am staying away, thought these new companies like Ebit and others will be better. But i guess that among all these thieves Bitmain is a better one

### Reply 10:
I was also quoted the same prices. Just when we thought Bitmain were taking advantage of the sitation, Ebang have come in and defined capitalism on steroids.

### Reply 11:
This is not a game for the average person anymore. With these prices, only companies can buy.

### Reply 12:
dont see any link in their site.

### Reply 13:
does anyone have more info about this miner?

### Reply 14:
what more info is there that you need? Its a crazy overpriced miner that has efficiency rivaled by the avalon 841 at double the price.

### Reply 15:
It is my guess that $200/Th is going to become the new norm

### Reply 16:
So i saw that Ebang had their new miners posted to their site (already sold out or maybe havent been up for sale yet), including their E10 which says its based on 10nm tech. I have been reading about new nm tech on here for a while, and it seems there is no way it is possible to have 10nm tech in miners yet because they have only been used in low power tech like cell phone... @notsofuzzy how is it possible that they are ready to sell them in Jan already? im super confused now.<link>

### Reply 17:
They have not put up any stock yet, they are not actually sold out. The description of the E9++ and E10 both say 10nm, the spec sheet for both miners says Chip Info DW1227 132pcs14nm LPP process)....Unless they drop the price or Bitmain raises theirs I dont see why anyone would by these. Why would anyone pay $1500 for 4 more TH, E9++/E10? Getting them a month earlier does not make up the price difference. Unless you are only reselling them to ebay suckers.Ive been running 2 E9 6.5TH for a while and have not had any issues so I was ready to place a big order for the E9++. But with the illogical pricing and their non existent customer support I think Im going to pass on Ebit for now.

### Reply 18:
i saw that the description was still showing 14nm process as well.... strange to me, are they trying to ""trick"" their customers or is the description page just not update"" interesting to say the least. I also do agree the price is insane. i guess we will find out more if other companies start putting out new miners. so far Avalon isnt using a new process, the dragonminter looks like a fake. I just dont see how Ebang successfully used 10nm process in miners when intel cant even use the same process in high powered products. this is an interesting article about intel and 10nm: <link>

### Reply 19:
Received reply from Ebit sales team. They need 100 units as minimum order . We all need to stick together to break this monopoly. There is no fair trade happening with Chinese manufacturers.

### Reply 20:
They are a private company and they can do whatever they want with their products. Like someone said , a group buy would solve this problem. My only concern is regarding the quality of these products. Do they worth those high prices?

### Reply 21:
Of c<rest of thread truncated>
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14009,"Date: 2011-05
Topic: Power bill
### Original post:
Hm, when did I start mining again?

### Reply 1:
I think you meant 40-50 kWh per day is a ""lot"". 40-50 per month is NOTHING. Although you'd have hated to see my usage last summer (before mining).Can't wait to see my May electric bill. Should be over 3,000 kWh and it isn't even 100F outside (yet).

### Reply 2:
Yeah, we are in a cool climate but at least we have inexpensive hydro-electric rates ($.0855/KWH) so the mining only added about $100 to my electric bill, more than offset by the run-up in BTC value over the past month.I've been building up the mining cluster over time so expect it to go up next month.I was just amused by the distinct spike on the usage graph

### Reply 3:
Oops. Yes, that is what I meant......

### Reply 4:
40-50kWH per month day is a lot before mining. But it looks like you are in a very cold climate and have electric heating.Edit: Fixed timeframe.

### Reply 5:
<link> to tiered pricing (god I hate Edison) April was twice as much as March. About $400 USD versus $200. I barely broke even mining. This month is turning out much better!

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11192,"Date: 2022-07
Topic: S19 XP with immersion cooling system vs. T19 Hydro with Antspace
### Original post:
In terms of current miner prices, availability, hashrate generated, and miner longevity. Which of the two systems makes more sense when it comes to getting the most Bitcoin rewards?The prices of the T19 Hydro, including the Antspace, are far below those of the S19 XP with immersion cooling system. With the S19 XP could be generated by custom MinerOS/PSU significantly more Hashrate. However, this would make the S19 XP equal or even more expensive in terms of power costs. Then there is the problem with the thermal paste that is washed out with immersion cooling over time and leads to more maintenance. Furthermore, the T19 Hydro uses water for cooling, which is always available. With immersion cooling, a special liquid is needed which also leads to extra costs.

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11788,"Date: 2012-02
Topic: 12.1 release (not preview) CPU usage DOWN
### Original post:
Not sure if this is well known or not, I've heard mixed things.Windows 7 32 bitRadeon HD 5830 875mhz GPU3.4ghz Pentium 4 (ancient, I know)1 GB <truncated> catalyst driversCPU usage while mining: 0-5%255mhashI previously had 11.6 drivers on this machine, and CPU was nearly always at 100% while mining.

### Reply 1:
you're kind of late. cpu been gone for a long while now. <link>

### Reply 2:
A long while being three days ago? Nothing wrong with using a P4, they were sound old chips back in the day. Sounds like 12.1 fixed the CPU usage problem, thanks for sharing. Maybe I'll finally update my drivers.

### Reply 3:
Don't forget it will install SDK2.6 and completely screw up your hashrates.

### Reply 4:
According to this thread, the effect is pretty minimal, though you do have to clock your memory higher. Upgrading would probably make sense for a hybrid gaming/mining rig.

### Reply 5:
for anyone that actually cares about their power bill, 2.6 is just 100% terrible. Hash rates are -significantly- lower than 2.1/2.4/2.5, and requires high memory frequency for barely acceptable mhash, and high memory = lots of power. i've seen reductions of about 30w per card reducing memory from stock to 330mhz and get even better mhash with the lower clock than high clock on 2.1/2.4/2.5. please dont encourage people to use 2.6 unless they have a 7970, then its unavoidable.

### Reply 6:
for anyone that actually cares about their power bill, 2.6 is just 100% terrible. Hash rates are -significantly- lower than 2.1/2.4/2.5, and requires high memory frequency for barely acceptable mhash, and high memory = lots of power. i've seen reductions of about 30w per card reducing memory from stock to 330mhz and get even better mhash with the lower clock than high clock on 2.1/2.4/2.5. please dont encourage people to use 2.6 unless they have a 7970, then its <truncated> have read that many times as well but I didn't see much of a drop for 2 5970's.....830/300 at 386 MH/sec each core with 12.1 and 2.6 on Cgminer 2.1.2. However same config with the latest Cgminer 2.2.1 it goes down to 338 MH/sec not sure on the difference with no other changes.At 386 MH/sec this rate seems to go right along with what most people are getting at that overclock. I tried sdk 2.5 with 12.1 and saw no difference.

### Reply 7:
Does this improve MHash performance on my HD6950 GPU without the CPU usage bug? If so what kind of boost should I expect to see?Thanks.

### Reply 8:
SDK 2.6 (included with 12.1) works best at the stock GPU memclock of 1000MHz; GPU memory underclocking is no longer required (nor available without a drop in hashrate) to get you lower video card power usage. However, if you are able to squash the CPU usage bug when no other drivers worked (100% of your CPU being used on at least one core, happens more often on multi-GPU mining), that might save you 25 watts or more depending on your system's CPU. The most optimized mining settings using 11.12/12.1 are within 1% of previous drivers and SDKs's hashrate, as referenced on the thread mentioned above.

### Reply 9:
It may be within 1% performance (see 1% slower), but it also requires using a lot more power than necessary because it requires more electricity to drive memory at 1ghz than 300mhz. 2.1 should still be used when possible, else 2.4/2.5. 2.6 is a last resort.

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11271,"Date: 2023-03
Topic: Avalon 1166 Pro Hashboard Help
### Original post:
Hello,After some time working with my Avalon 1166Pro 81th, one hashboard started to have problems, showing this code <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':4031,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1248192.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[486] <truncated> LW[358718] MH[5150 3 1] HW[5154] DH[30.216%] Temp[26] TMax[88] TAvg[65] Fan1[4932] Fan2[4914] Fan3[4907] Fan4[4914] FanR[65%] Vo[354] PS[0 1197 1418 227 3218 1420 3524] PLL0[76 2 6 13836] PLL1[10730 3098 2827 2849] PLL2[83 0 3 13834] GHSspd[46357.58] DHspd[22.864%] GHSmm[74443.98] GHSavg[36277.56] WU[506791.66] Freq[445.67] Led[0] MGHS[17307.72 162.60 18807.24] MTmax[88 50 77] MTavg[74 44 67] TA[360] Core[A3201] PING[56] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 262144 0] ECMM[0] SF0[448 468 488 508] SF1[448 468 488 508] SF2[448 468 488 508] PVT_T0[ 73 75 80 86 79 75 76 79 88 82 79 77 75 77 83 83 81 78 <rest of post truncated>

### Reply 1:
If you talking about the ceramic capacitor it should work without that capacitor I think there is another reason why it gives you more hardware errors according to your logs.If you have a multimeter try to check the resistance on that section where the ceramic is gone and maybe there are some shorted parts that cause some parts to fall off.Can you tell me which hash board is it the first or the middle hashboard?Just a bit confused about the logs because MH shows the first hashboard has many hardware errors and the PVT_T1 shows abnormal values which is the middle board.

### Reply 2:
There are many problems in the middle board, some chips have abnormal temperature and abnormal domain voltage, and this board has no hash rate. If you have an Avalon tester, recommended use the tester to test this middle board separately to find out the specific cause of the failure.

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11177,"Date: 2022-07
Topic: Aladdin T1, DragonMint T1 and Innosilicon T1 is same?
### Original post:
Hello everyone, I recently bought a used Innosilicon T1, but the logo of the received goods is DragonMint T1, and the hash board, I found out that it may be the hashboard of Aladdin T1. I asked the seller, the seller told me they are together, all T1, T2 are Innosilicon. Is this believable?

### Reply 1:
Yes, they are all manufactured by Innosilicon and are based on the same tech.I remember laughing when back in the DragonMint release days I pointed the similarities between DragonMint T1 and Innosilicon hardware design. My comments made some DragonMint staff quite mad towards me. Now it is quite easy to see how right I was all along.

### Reply 2:
Thanks for the explanation.

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13978,"Date: 2011-05
Topic: 4 Card Motherboard
### Original post:
So I'm new here, but just wanted to say Hi!My question is, are there any confirmed 4 card systems out there? What motherboards are they using? Cards and Power Supplies? I'm looking at a 4 card system and right now I think 5850's are the most economical because I'm pretty sure I can get 4 of them on one PSU. They're relatively energy efficient and the Cost/MHash is incredibly low.Apologies if I'm not scouring the forums well enough before asking this. TONS of good information here.Oh, and is there a thread on vladimir's setup <truncated>

### Reply 1:
5850s are not as efficient as 5870s. Less stream processors is my guess as to why. You can get four 5870s on one PSU, no problem.

### Reply 2:
Keep in mind putting 4 cards on a motherboard results in the cards flush against each other. 5870s will throttle if not cooled sufficiently. You may want to consider building 2 dual card setups with cheaper PSUs and motherboards.

### Reply 3:
5850s are significantly cheaper to buy though.

### Reply 4:
The cooling issue and the Cost issue is why I was thinking the 5850's would be better.The 5870 is not as readily available, and when it is the price is between 2 and 3 times higher than the 5850's.Are there people who have built custom boxes to put 4 high end cards on one motherboard? 6990's or 5970's

### Reply 5:
You would save money on the MB if you went with less 5870's. For me the 5870 is the sweet spot. I would love to have a 5970 but I never run into them cheap.

### Reply 6:
Yes: <link>

### Reply 7:
You might be interested in some set-up like this one.P.S. dust seems to have it bookmarked while I was googling for ""whitepixel""

### Reply 8:
Where can you get 5870's for a reasonable price though? Everywhere I'm finding them they're 300+

### Reply 9:
ebay... just over 200 shipped.

### Reply 10:
So in regards to PCI-E 16x slots.Most boards have 2x 16x operating at 16x and 16x or 16x and 8x or 8x and 8x.Even the high end ones with 4 slots are usually only 16x 16x 8x 4x My question is does having cards in the 8x and 4x slots decrease your mining throughput?

### Reply 11:
No. PCIe x1 is perfectly fine for mining

### Reply 12:
$249 with a $50 rebate:<link> just picked up a couple. and the cheapest 5850s are only twenty bucks less:<link> is better than NewEgg - and i have one just down the road...

### Reply 13:
The same 5850 is $40 cheaper on newegg with rebate. The coolers on those cards are nice but they don't vent out of the case, they just pass they heat issue from the card to the case. The reference ones are better.

### Reply 14:
i've kinda gotten out of the habit of even checking NewEgg, since i found MicroCenter. and the convenience is worth the occasional higher price. i note that MicroCenter's ads include NewEgg pricing...you're right about reference cards though - i spent an extra $50 on my latest mining case. more fans than carter has little liver pills...

### Reply 15:
<link> one of the best choices if you can get one... you can up up to 5 VGAs on that MB using pci-e x1 risers. And its cheap.or you can have an <link> for up to 3 VGAs.

### Reply 16:
But how do you know that the card wasn't run to the point of damage when you get it from EBay. Sure, it may work for games, but 98-100% GPU usage day and day out will reveal the damage. If you get an EBay buyer who has a history of buying a higher end card on Ebay and selling their lower end card [and they indicate they are gamers], then it might be a safer buy. I have no problem buying or selling cards on Ebay, but for this particular purpose, I am wary. You may or may not get what you pay for. Whenever ATI/AMD puts out a driver, a problem is likely to crop up which may or may not cause you difficulty ... will you blame it on the card [and seller] or the driver? You won't ever know for sure. New with warranty is my suggestion for mining. No doubt others feel differently about this and that others have had success using Ebay, but YMMV.

### Reply 17:
Where can I get these pci-e 1x risers at?

### Reply 18:
Newegg and Tiger Direct have the Saphire 5850 for 139 free shipping. Newegg w/o rebate Tiger Direct With.So with tax, the card is around 220, Newegg has no tax so just 140. Nearly twice the cost, or at least 80% more for a 15% performance bump.<link> love MicroCenter too though, used to live not too far from the one in the Minneapple.

### Reply 19:
Yeah I've had bad luck with the Ebay thing is well, and buying bulk from non OEM distributors. Support is pretty much nonexistent.My theory is I'd be money ahead to pay the extra 10 or 15% on the cards up front to know that I can RMA them if anything goes wrong.The 139.00 USD Sapphire 5850's on Newegg right now are looking mighty tasty.How many cards do you have in those nice rackmount cases of yours vladimir?

### Reply 20:
Duly noted, the ones with the full covering around the heatsink and the squirrel cage fan?

### Reply 21:
<link> The turbine styl<rest of thread truncated>
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23243,"Date: 2020-04
Topic: Avalon 841 not recognized by the controller
### Original post:
Hello everyone, I have two Avalon 841 that are not recognized by the controller, these machines remain in white LED when starting and do not turn green or blue, always in white LED, can anyone help me?

### Reply 1:
so the mining window in your browser is visible?and it shows 2 of the 4 a841 units.it used to show all 4 a841 units?are all four attached in 1 chain? if a chain of 4rasp pi - 841-841 - 841-841. one chain. are the two bolds ones dead?that could mean the wire with lots of space is bad

### Reply 2:
have they ever worked with that controller?Have you ever had other Avalon gear working with that controller?Can you find the controller in a browser?

### Reply 3:
Yes, they worked with these controller, but no any more, not recognized.Yes, i have two more Avalon with this same controller, and they work fine.Raspberry Pi 3 B with openWRT+ cgminer<link>

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14429,"Date: 2011-07
Topic: *BTC Poolwatch* - Monitor 14 different pools! [Web/Mobile]
### Original post:
updated with new screen shots in first post.

### Reply 1:
Cool service.

### Reply 2:
Thanks, Nasty.BTW, I have implemented a new feature to turn-off monitoring of some pools, but keep the API keys, to make our life easier.The has been tested in my test site by beta tester (erm 1 beta tester). I will move this to LIVE tonight or over the weekend.Sorry for the delay on this. Just got a pre-owned 5870 and was busy with upgrading my rigs to 11.6. A man's gotta eat. ps. I've got a few donations (4 so far...), and if you have donated, please PM me and I can give you the link to the beta site so you can get a first hand view of up-coming features.Just PM me with the donation transaction code.Regards,Koo

### Reply 3:
Would be nice to show stats via JSON as well, single JSON API for all pools would be nice, as well as consistency of data...

### Reply 4:
Hi Ed, Do you mean to provide a JSON API to show the information of all the pools?

### Reply 5:
I dunno rearwheels. That json api for all pools sunds kinda ... hoppy to me

### Reply 6:
I was wondering why would the json api for all pools be ""happy""...

### Reply 7:
Major updates1. Added ""Enable"" check box in the API tokens setup. If you do not want to monitor a pool, just uncheck the check box so that the API token of the pool is retained.(Only available for web version, not for mobile)2. Auto-refresh, stoppingAt the bottom of the page, there is a check box to allow you to stop the auto-refresh.Check it again to allow auto-refresh.3. Added a ""Page generated"" date and time.4. Miners are sorted by name and aligned left for a more organised look.For the technies, programmers:5. Implemented factory design pattern.Allows easy adding of new pools6. Refactored MVC codes.Less repeated codes. Makes for easier and faster changes (whatever it may be).

### Reply 8:
Just wondering if there was an update on adding NoFeeMining.com??

### Reply 9:
Added nofeemining.com!

### Reply 10:
thxsent some coin

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10093,"Date: 2016-12
Topic: Volt modding Antminer S3+, I have a weird pcb(upgrade kit) and need help
### Original post:
Hey guys, trying to follow this post. <link> is, I can't find that resistor as I seem to have a weird PCB on my S3+. I think it's an upgrade kit.Any idea on which resistor to mod?Here's an album with the pics.<link>

### Reply 1:
Holy didnt think people still use Antminer S3.I had the same issue as you, it was a differerent PCB and I had to pencil a different resistor. Try to search the old Antminer S3 topic and there should be photos there that I posted. I remember the resistor was very sensitive, and it took many tries to get the Ohm correct.I think I am running it at 400Ghs @ 300Watts.

### Reply 2:
Found it here for anyone who is looking.<link> R55 eh? What kind of resistance should I expect and do I need to add more, or reduce it to adjust the voltage down? I'm seeing 48.6Kohm.

### Reply 3:
I would use a Potentiometer and play with it, monitor the voltage. I think you should stay in the range of 0.9v-1.1v at first, just to be safe. I'm use to play with the S1 board but never tried with the S3. the S1 had 4 chains of chips, so you needed 4 Pot / resistance per board. There is all the clock and timing to be found with the voltage you want to use, that is the hardest part.Found this ... Typical hash rate and powerVoltage(V) HashRate(GH/s) Current(A) Total power(W) W/GH0.72 14.18 10.40 7.49 0.5280.75 15.75 12.24 9.18 0.5830.80 17.33 15.20 12.16 0.7020.85 17.33 20.00 17.00 0.981EDIT: Check that => <link> It looks like the Resistance to be change is R17 ... and it's 8 per board not 4 like the S1

### Reply 4:
Don't lower resistance on R55. I lowered it from 48k down to ~35k, power went from 300watts to 600watts.How would I read the voltage? I know where the ground point is.R17 is the one for the regular board, not the upgrade kit.

### Reply 5:
The resistors and resistor values are different between those two PCBs. I had a few of the older S3 and they were easier to mod because you just had to pencil in 50% of its current Ohm. But the later ones had higher values and you had to pencil in a smaller amount and took alot of play and plug. You need to pencil it in, measure with Ohm meter and plug it in and measure the voltage. Was a big pain. But you can use regular computer case fans and its CRAZY SILENT at 400Gh/s using 300 Watts. So a good heater.

### Reply 6:
How do I measure the voltage?

### Reply 7:
with a multimeter.Search for the S1 thread on this topic, I think it's by mstrongbow, there is a video on youtube by him as well that shows how to check it.<link>

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20925,"Date: 2016-02
Topic: how to set miner conf
### Original post:
Hi.i read somewhere that you should set /128 per 100GH/sso for me with my s1's its /256but is that the best way when you use p2pool or is there a better way?

### Reply 1:
so noone knows the best settings ? or is default the best way?

### Reply 2:
I'm not sure why the default would not be ok, however, I am not a miner, I am more into software. This may help:<link> luck!

### Reply 3:
when i use default it seems i dont get any shares at all.Local: 394GH/s in last 10.0 minutes Local dead on arrival: ~6.5% (4-9%) Expected time to share: 5.3 hoursShares: 8 (1 orphan, 1 dead) Stale rate: ~25.0% (7-60%) Efficiency: ~82.5% (45-103%) Current payout: (0.0031)=0.0031 BTCthats with /512 after btc adress

### Reply 4:
anyone else have some input ?like configurations to do.when i used nicehsh they set it to 512 for my antminer s1but i'm not sure it helps getting shares if i set btcadress/512 or just leave itmust be someone that have fiddled with it or is a GURU on it./Mattias

### Reply 5:
I restarted recently practically from scratch just got it all here <link> seem to need to do much in the way of confiq to be fair, and some of the tools came in useful.

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21693,"Date: 2017-10
Topic: S9 fan overspeed indication (30600 rpm!)
### Original post:
Had anyone had a situation where one fan shows 30600 rpm?I have one S9 that does it, consequently second fan under-spins at 2280 rpm; PCBs are a bit hot and miner periodically loses a board (randomly).The board comes back upon soft or hard restart, but fan speed keeps at 30600.Q: 1. did it happen to you?2. if it did, can anything help the situation?I am reluctant to sent this S9 for repair because apart from showing high fan speed, miner works OK, until it drops a board, that is.However, since restart brings it back, it is not that big of a deal.please, let me know.

### Reply 1:
It's a known bug. Not sure what can done about it unless you aren't running the latest firmware, but updating firmware is its own thing...

### Reply 2:
Thanks. I did not update the software because it is such a nuisance. So far it never helped with anything.Right now this S9 (early autotuning batch) restarts in just 5-6 min.If this is the only thing that helps, I might do it, reluctantly.

### Reply 3:
Just to give you an idea of how common that bug is here is a screenshot of 30 miners with 8 of them showing the bug.

### Reply 4:
@fanatic26: wow, high % as 8/30=~27%.So, it is un-fixable? Even soft update does not help or you did not bother?

### Reply 5:
No firmware changes have ever fixed this. It is something I have dealt with on these s9s since the beginning. As it doesnt affect mining in any way that I have ever noticed I just chalked it up to bitmains laziness in that they dont care to patch it.

### Reply 6:
Thanks, it means that I should not bother upgrading the system.You are probably located in a colder climate because in my case (higher ambient), PCB temp goes to 79-80C and one board drops from time to time.

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9759,"Date: 2016-03
Topic: Antminer s1-s3 .bin modding - is it possible?
### Original post:
You can try using all the files instead, put them in a new custom folder in ultra iso (new project) and try that way, maybe it will work. I had problems like this myself long time ago, not sure if it worked now.I shall have a nose around, see what I can come up with.

### Reply 1:
Magiciso... lolYour computer skills lack for what you wish to achieve.Hint: wait some time maybe there will be new firmware for ants family later

### Reply 2:
Well, either way Im not ready to give up yet I'm in the process of familiarizing myself with the different types of bin file, how they are created, and how they are extracted. Thank you for the help. I'd love to have a self-customized front-end on my s3+ running solo right now. And, who knows, if it works out, maybe I'll link a copy for any brave s3/s3+ owners willing to give it a go lol. (after a proper testing period of course)However at this point, these are all just big dreams lolI have tried other software aswell, and as soon as some of my projects are done running on my winblows partition, I'll be switching over to my linux for a real go at it.I think it's a tad over-reaching to tie my 'computer skills' to a single piece of software I mentioned. I have accomplished some neat projects in my short time (~ 5 years) learning all areas of tech. I run my own custom android kernel (5.1 kali nethunter) with some neat additions such as overclocking, multiple filesystem support, and OTG support, all from a vanilla kernel source. ( a feat I accomplished as my FIRST android project)This is my first attempt with .bin files, and as such, the learning curve is likely to be steep, which Im p<rest of post truncated>

### Reply 3:
Do you have Winzip?If you need to extract the contents of a complex archive, such as a tar.gz or tgz file (each being an archive with a tar file inside), you would need two commands:unzip file.tar.gz to your custom [folder] then put them in the new ultra iso custom as you see.unzip file.tar to your custom [folder] then put them in the new ultra iso custom as seenThese things used to annoy me in the past, still do now. You just have to try, and try <truncated> file.tar.gz [PATH]wzunzip file.tar [PATH]

### Reply 4:
will do I think my first step is going to be getting a look at the newer firmwares, such as s5 or s7, to get a feel for the file tree setup. Then switching over to linux for a better attempt at the s3 .bin file.

### Reply 5:
Here for us tools <link>

### Reply 6:
Please make this work... lol I have a shed of S1's that I'm too lazy to upgrade the blades.

### Reply 7:
Well, the current project is for the s3/s3+, however if its successful, I'll be dusting off the s1 and giving it a go aswell

### Reply 8:
Hello again BCT members,I had a question, and decided I'd reach out to some of the knowledgeable people here at BCT. I have an old antminer s1 kicking around, and just got an s3 for around 20$. Now, after mining with nicehash for awhile, I noticed they have custom firmware binaries for some of the newer S series, however they only offer the 'extra-nonce' cgminer binary for s1 and s3. This got me thinking, why just the newer models? Why not make a full .bin thats easily flashable by everyone?My question is this, how was nicehash able to open and modify the s4-s7 bin files? is there possibly a linux program that will open the file to a semi readable state? Or am I going to have to try some type of debugger and <truncated> so from the bit of research i've done it seems that the firmware file is strictly binary info. It is not a cd-rom image that has been converted to bin... which would allow modification directly.So .... I've moved to a new avenue, when taking a backup through the LUCI interface, the /etc/config folder is backed up into a tar.gz file.Through the combination of the backup, and a bit of scp work, Ive got a complete (or a close as possible) backup of the entire firmware.<rest of post truncated>

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  },
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    ""hardware_name"": ""S1's"",
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  },
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    ""hardware_name"": ""s1"",
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  },
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    ""hardware_name"": ""s3"",
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  },
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    ""hardware_name"": ""s5"",
    ""hardware_is_owned"": false
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20577,"Date: 2015-08
Topic: getting started
### Original post:
Just downloaded GUIMiner - v2012-12-03. What's the next step?

### Reply 1:
You really need to read up on asics. Mining with GUIMiner is not going to pay much at all, most likely you will lose money.Look into asic miners there is an entire hardware section. What is your electricity cost?

","[
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    ""hardware_name"": ""GUIMiner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic miners"",
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  }
]"
11766,"Date: 2012-02
Topic: new DiaKGCN kernel for Phoenix miner (7970 / GCN) - 2012-01-29
### Original post:
download current version:<link> be faster than the previous one, changelog is included and I edited the first post to be more informative!Dia

### Reply 1:
~695MH/s on a 7970 at 1175/1375 clocks, with the command line from the OP.Diablominer gives ~700MH/s with less interface lag though.

### Reply 2:
Some reports indicate, that a lower AGGRESSION could lead to higher values, but I can't confirm this for my machine.I'm working hard on the next version, the optimisation is not finished...Dia

### Reply 3:
@Diapolo:So do you have any opinions on GCN vs. VLIW4/5 when it comes to optimizations for the mining cores that are out there? Do you expect to CGN to be a nice step forward, or at best, should we be happy that CGN didn't nerf performance when compared to the VLIW4/5 architecture?I'm curious to get your feedback. Thanks for all your work!

### Reply 4:
I think GCN is a great step in the right direction. It's far easier for me AND the compiler to write / generate code, which results in pretty good utilization of the GPUs compute units. The CUs in contrast to VLIW4/VLIW5 units consist of independant vector units, which makes code or wavefronts on the GPU depend less on results of other units. The OpenCL compiler for GCN feels far more matured, than it was after the relase of the 69XX series of cards. The drawback seems to be, that the current kernels have all very similar performance levels .Dia

","[
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  },
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    ""hardware_name"": ""GCN"",
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  },
  {
    ""hardware_name"": ""VLIW4/5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""69XX series of cards"",
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]"
23670,"Date: 2021-08
Topic: Solo Mining Setup with S19
### Original post:
I have an Antminer S19 and want to Solo mine 1 day a week just for fun. I downloaded and synced the bitcoin core on my laptop but how do I solo mine with my S19? I cannot seem to find a good step-by-step guide.

### Reply 1:
It's probably easier to point to a solo pool to make sure you don't lose the block you could find. Kano has the lowest fee, CKPool Solo has a long history, and there are others like viaBTC.However, if you're deadset to solo mine to your own node from your s19, you need:Setup RPC connection (username and password) on your bitcoind Use cgminer or bfgminer stratum proxy to do you local mining, OR Setup an open source mining pool

### Reply 2:
You are far better off solo mining with a pool that offers it such as Kano.is, solo.ck.org, etc.You cannot mine directly to Core for the past several years now, you have setup a Stratum server to go between Core and the miner.

### Reply 3:
I will third <truncated> the way to goI know ck allows anonymous Just gen a new btc addy in your walletAsk kano pool if his works like that.Viabtc needs more info and is not anonymous

### Reply 4:
My pool requires an account: which is an email address and a payout address.gmail makes it simple to create email addresses ...You can increase the security of your account with 2FA also.My pool also shows you API and web based numerical and graphical statistics, so it's easy to see how you are performing,not just some random inaccurate 'right now' value, that anyone on the internet can also see on that 'anonymous' pool.(and on my pool you can give others secure web based access to your account using your API key, but only access to the statistics, not the account information)The fact that your miner is mining to the pool with a payout address sent over the internet,and anyone can look at your account on that 'anonymous' pool,and if you find a block on that pool, it is public information of which bitcoin address found it,makes the belief that it is 'anonymous' mining sketchy at best.

### Reply 5:
Thanks guys!

","[
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  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitcoind"",
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    ""hardware_name"": ""cgminer"",
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    ""hardware_name"": ""bfgminer"",
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13507,"Date: 2016-05
Topic: complete CD/USB/PXE bootable p2pool miner - p2pcoin
### Original post:
p2pcoin users need to update to version 0.3 ASAP. This is due to a change in p2pool. Sorry for the short notice. I was out of town last week and somehow missed forrestv's post when I was catching up.

### Reply 1:
I tried version .3 from a DVD and USB. When booting from the DVD I got the p2pcoin screen and it just counts down from 10 and keep restarting back to 10. When I tried from USB using UNETBOOTIN it just brought up a blank terminal window with ""BOOT:"". I will keep watching this and test when the next version comes out.

### Reply 2:
That's odd. I've never seen that before. I'll check it out tomorrow morning.

### Reply 3:
Ok, the 0.3 ISO posted does fail to boot when burned to a CD. I'll have 0.3.1 out with a fix soon.I just tested it by using unetbootin on a Windows box to write it to a formatted USB stick. For me, the USB boot still works fine. Is the partition on your USB device marked as bootable?

### Reply 4:
0.3.1 posted. CD booting works again, at least for me. Let me know if anyone else has problems with it.

### Reply 5:
Hey kjj,Just put together a small rig (5830 and 5850 currently with 4GB RAM) and thought I'd test this out. I know very little about linux as I've only used ubuntu and BT before and haven't used them heavily, so if you can help me get this working I'm sure almost anyone else would be able to do it too.I downloaded the latest 0.3.1 version and used UNetBootin to burn it to a thumbdrive (32GB).When I boot from the USB stick I see a boot menu a few options:Default: error message ""cat: can't open <truncated> : No such file or directory"" (repeated many times)LinuxCoin (all): error message ""cat: can't open <truncated> : No such file or directory"" (repeated many times)p2pcoin: error message ""Invalid or corrupt kernel image""Any idea what the problem might be?In the meantime I'll try re-downloading the torrent in case the download got corrupted for some reason.Thanks!

### Reply 6:
After you ran unetbootin, did you properly dismount the drive before unplugging it?

### Reply 7:
Yes I did (both times, as I tried re-downloading formatting stick and re-installing). Tonight I'll try from scratch using another stick or 2 I have lying around.

### Reply 8:
I just tested this out. I didn't have a brand new USB drive, but I have a pile of old ones, so I used DD to zero out a spare 4GB drive. Then I plugged it into a windows box (XP) and formatted it as FAT32. Then used unetbootin on Windows to write the 0.3.1 ISO image and used the Windows USB disconnect thing. Then I switched off one of my rigs, plugged it in, turned it back on.Booted fine, mining away as I type this.I googled the messages you are getting, and they weren't very helpful. Maybe try different RAM? Seems like a long shot, but someone else reported success that way.

### Reply 9:
Hmm ok, hopefully will have more luck with another stick tonight then.As a side note I currently have BAMT mining away (booted up and worked no trouble) on the stick I was originally trying p2pcoin with.I will still do my best to get p2pcoin up and running rather than just sticking with BAMT though.

### Reply 10:
0.4 released to upgrade p2pool to 0.11.1. See forrestv's post.The network will switch automatically when adoption hits 95%, so there is no hard date. Better sooner than later, I suppose, but doesn't appear to be super urgent yet.

### Reply 11:
Ok so with fresh downloaded ISO and a different USB stick it booted up with no trouble, the previous issue must have been something on my end. Now that its up and running, in the LXTerminal I'm seeing ""Waiting for local namecoin node to catch up (986)"" over and over again for about 30min now. I'm assuming this is something I'll just have to wait out?While this is happening I don't seem to be able to run bitcoin client or the file viewer (when clicked from the menu nothing shows up, no error messages). Everything else seems to work as it should.

### Reply 12:
My personal p2pcoin rig farm found a block. I haven't been watching every coinbase looking for the [P2COINv0] tag, so this might not have been the very first one found with this setup, but it is the first one that I know of.Amencon, did your node finish downloading the chains and start up?

### Reply 13:
Sorry for the long delay.I've been running into some trouble.First off all my successful boots into the program are for the ""Default"" option in the boot selection screen. I still get ""Invalid or corrupt kernel image"" for he p2pcoin option.My first few attempts to let the system catch up to the latest namecoin block resulted in the LXTerminal notifying me that it lost connection to the server. When restarting the program I have to start the updating process over.I ended up trying the newest 0.4v on another USB stick and this time caught up to the latest namecoin block then it began updating to the latest bitcoin block and it again ended up losing connection <rest of thread truncated>
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    ""hardware_name"": ""Windows box"",
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""different USB stick"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""p2pcoin rig farm"",
    ""hardware_is_owned"": true
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15491,"Date: 2015-03
Topic: Bitmain Tech going Offline - Read Me
### Original post:
Got this email from Bitmain not long ago.I see no thread for it, this is quite significant, here you are.This is the unedited email:I could not find anything else but this is pretty serious.

### Reply 1:
probably because they raised their prices up so much lol. they pissed off lots of people by doing that lol

### Reply 2:
I was thinking the same... they finally pissed off the wrong people.Wrong people with a motive and a lot of free time on their hands lol

### Reply 3:
So Bitmain won't pay them I assume. I wonder how much did the hackers want from Bitmain. Personally I would pay hackers if they wanted reasonable price for cessation of attacks. But I do not know if blackmailers can be trusted. Probably not. It is a hard choice for Bitmain.

### Reply 4:
There's discussion enough in the official thread, please use it:<link>

",[]
9334,"Date: 2015-09
Topic: NEEDED: Bitmain Antminer S2 IO Controller Board
### Original post:
Hello,I recently ordered a Bitmain Antminer S2 off of ebay for $420.00. Unfortunately, the unit was severely damaged during shipment (Thanx, USPS!). While I found replacement controller Board & ASIC Blades, I need an IO Board for the Beaglebone that plugs into the center slot of the controller board PCI strip. There is a deep gouge on the IO board but the Beaglebone appears to be OK.I also have found some replacement capacitors for some of the damaged ASIC blades that had the original caps torn off by the USPS during transit.I do need that IO board though.Please help.Thanx in Advance.

### Reply 1:
Not sure with name if you are real or trolling. If real you might put in a Bitmain support ticket and see if they sell that piece. I am not sure if they sell S2 parts still but that is your best bet.I know with a S3 I had a bad part and bought a new part from them. (this was a little while back though)

### Reply 2:
I saw that board on e-bay recently.

### Reply 3:
I bid on that exact item but a couple of hours later, I was outbid :-(I don't think I'm gonna get it.I guess I'll have to resort to unsoldering the bad PCI socket and soldering in a new one........

### Reply 4:
Yes one of mine was damaged, boards everywhere. Seems Bitmain used several different hold down structure designs for the pcb boards, some not so good. Your best bet is to wait and get it on ebay, otherwise post in the ""Computer Hardware"" section under ""Goods"" and someone may have one for you. It doesn't hurt to ask Bitmain but they seem to be hesitant in stocking spare parts for older models.

### Reply 5:
For now, the best option would be buy in the 2nd hand market... We do not sell S2 parts.Capacitor on the other hand, you can buy them on Ebay, too but if you really can't buy it, we may have them in stock from USA side as I have seen the reels sitting on the shelving somewhere.

### Reply 6:
I would consider parting with one if the price were right.

### Reply 7:
Are you still looking to sell? I am looking for a new base board as well

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13745,"Date: 2022-02
Topic: Bitcoin core, antminer S19 pro. Help
### Original post:
I tried to search but I couldn't find any latest guide to set up bitcoin core for solo mining but you can try this one below- <link> follow the suggested one under that link.If you are running a full node with raspiblitz check this guide- <link> these will help you

### Reply 1:
I have setup bitcoin core full node(windows 10 pc), I have a Antminer S19. I want to try and solo mine my full node, not pools/solo pools. Can someone point me in the right direction? I don't know how to get my S19 to solo mine my node.

### Reply 2:
They wont work, it expects a pre-taproot version of the protocol.

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    ""hardware_name"": ""windows 10 pc"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Antminer S19"",
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20330,"Date: 2015-03
Topic: AntMiner S5 integration to mining machine
### Original post:
Hi all, I've been on a 4 year hiatus; and am just recently getting back into bitcoin mining. I bought my first bitcoins via a WesternUnion 6-day process, while waiting on my ATI Radeon GPUs, 3 of them... looking at an old post, I was happy to be getting 160 Mhash. Anywho, that system was a tower, with a board and slots to accomodate the Radeon GPUs (duals), and I'm just curious if the same chassis will support this 'AntMiner S5'? Also, can someone point me to any of the 'recent' best mining practices. As I know HW technology doubles every 18 months, I'm sure my old rig is well outdated - so, if there's a new way of doing things, I'm all ears.Thanks,CRYPT

### Reply 1:
At this point mining with CPU or even GPU is normally costing more money then you mine.As far as S5 it takes hardly anything compared to the GPU day's. It is a all in one unit. Basically you hook up a psu and set the pools and do nothing more. It's not near the baby sitting you did with your GPU rigs. It will take no special chassis, just a shelf or table to put on.

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    ""hardware_name"": ""psu"",
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8922,"Date: 2015-03
Topic: [CLOSED] Assembly Service for BitFury r.2 Chips into Nano Fury 6 USB Miner
### Original post:
Gauging Interest in Assembly Services for NF2 and/or NF6We are checking to see if there is interest in a combined assembly run/services for Nano Fury USB miners using the new BitFury Rev.2 chips that are now available.We would NOT be supplying any BitFury Chips for this service. There are Group Buys and direct purchasing options available at:BitcoinValet's GB <link> Direct for smaller quantities at about $5 a chip: <link> for a large order at about $4.15/chip: <link> solid options depending on quantity. Current Interest Expressed Name Quantity House 20 BitcoinValet 10 Philipma1957 8 Private 8 Private 250 (approx.) Private 50 Stex2009 8 yslyung 10 Private 150 TOTAL 500+04/24/2014 UPDATE$68 per miner is the final cost the NF6. Again we did not have enough interest in the NF2 so we are only building the NF6.This includes parts, pcb manufacturing, assembly and shipping. Does not include BitFury chips or Heat Sink. If you need guidance on the Heatsink we can help you with that by posting ones we are confident will work well.If you want to see the final assembly diagram send me a PM. I don't want to post it.Payment is a simple calculation of the # of miners you want times (x) $68.We are <rest of post truncated>

### Reply 1:
in the mean time while doing some testing with just a slightly repositioned fan (and same old somewhat crappy USB hub providing 4.7V currently):bfgminer version 3.99.0 - Started: [2014-05-13 10:54:56] - [ 0 days 10:50:16]Manage devices Pool management Settings Display optionsPool 3: ...ning.eligius.st Diff:16 +Strtm LU:[21:44:43] User:Block: ...071ab1e4 #300646 Diff:8.85G (63.38P) Started: [21:44:35]ST:8 F:0 NB:70 AS:0 BW:[257/ 34 B/s] E:24.46 I:35.37uBTC/hr BS:2.34M1/6 | <truncated> | A:8477 R:33+0(.39%) <truncated> 0: | <truncated> | A:8482 R:33+0(.39%) <truncated> 21:42:28] Accepted 0a379afc NFY 0e pool 3 Diff 25/16[2014-05-13 21:42:29] Accepted 01f05aad NFY 0a pool 3 Diff 132/16[2014-05-13 21:42:34] Accepted 002ce119 NFY 0b pool 3 Diff 1.46k/16[2014-05-13 21:42:41] Accepted 05a7ecb8 NFY 0a pool 3 Diff 45/16[2014-05-13 21:42:42] Accepted 006ef451 NFY 0b pool 3 Diff 590/16[2014-05-13 21:42:49] Accepted 0f233241 NFY 0c pool 3 Diff 16/16[2014-05-13 21:42:50] Accepted 09a43e0c NFY 0e pool 3 Diff 26/16[2014-05-13 21:42:51] Accepted 02070698 NFY 0a pool 3 Diff 126/16

### Reply 2:
Sweet!

### Reply 3:
If anyone still needs heatsinks for these, I ordered 5 extra. They are peel and stick. $5 each, plus shipping, BTC or PayPal. PM me.<link>

### Reply 4:
Any known trusted 2nd hand sources for these?

### Reply 5:
I don't know of any with a reasonable supply, but sidehack was willing to part with one a week and a half back:<link>

### Reply 6:
We've got four on the shelf, and I think we'd be willing to sell two. Probably best to talk to novak, he knows the USB hardware better than I do.

### Reply 7:
I might have a few factory seconds left. If you are interested and serious pm me.

### Reply 8:
You got any chips running around?

### Reply 9:
PM sent

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    ""hardware_name"": ""BitFury Rev.2 chips"",
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  },
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    ""hardware_name"": ""USB hub"",
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16721,"Date: 2011-06
Topic: High error rate on Windows no matter what
### Original post:
I've previously posted here: <link> that thread is now much too narrow in scope, so I decided to start a new one.On Ubuntu, I'm running DiaboMiner and mining for slush. It's working great, with less than 1% of my blocks being rejected, except for a mysterious problem where the hash rate drops from 70 to 50 Mhash/s after I close the laptop's lid for a while. However, on Windows, I can't mine without an extremely high error rate. With DiabloMiner, roughly 40% of my blocks are rejected. On Phoenix, it's approximately 10%. I've tried ATI Stream v.2.1, v.2.4, Catalyst 10.11, and Catalyst 11.06. There seems to be no difference in terms of error rate.Has anybody else encountered the same problem? I'm really hoping that someone has a solution!

### Reply 1:
Is this when you close the laptop lid?There might be some power saving issues popping up since Windows really likes to mess with power saving on laptops in general.

### Reply 2:
No, the error rate isn't affected by whether I close the lid, in either operating system. In Ubuntu, the only effect of closing the lid seems to be a drop in hash rate (I've never figured out why). In Windows, the computer always went into hibernation after 15 minutes, even after I disabled hibernation in power management. I think I've fixed that problem, and I'm hoping that the computer will mine overnight.

### Reply 3:
Wow 40% rejection rate? Seriously?Sounds like something turned off and you were mining stale solutions for a long period of time.Check that your ""power options"" are not lowering the power on ANYTHING after ANY amount of time. Lots of new operating systems come setup with that ""feature"" these days. Ubuntu is one of them.Good luck.

### Reply 4:
When you close the lid to the laptop it is putting it in a power save mode.That is why you have the drop in performance.If you are using the Catalyst control center to over clock you card try increasing the memory.That might fix your issue.

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    ""hardware_name"": ""ATI Stream v.2.1"",
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    ""hardware_name"": ""ATI Stream v.2.4"",
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    ""hardware_name"": ""Catalyst 10.11"",
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21989,"Date: 2017-12
Topic: Antminer S9 APW3 120V PSU
### Original post:
Hello,I'm considering buying a few Antminer S9's that come with a 1200W 120V APW3 PSU.Has anyone ever used this PSU before on a S9? Is it enough power?As I'm in the USA, a 120V PSU is much easier, but I could also get the 1600W 220V PSU included as well...but would need to hire an electrician to set that up.Any words of advice would be greatly appreciated!Also, has anyone bought from LDTMiners.com before?-Nicolia

### Reply 1:
You are talking about the same power supply. You need to run it on 220v, the S9 pulls 1400 watts and it will not run otherwise.

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    ""hardware_name"": ""1200W 120V APW3 PSU"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""1600W 220V PSU"",
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11674,"Date: 2011-11
Topic: Mining on an Intel Intanium CPU
### Original post:
Im wondering what performance an Itanium would deliver.Are there any miners working on that plattform yet?

### Reply 1:
I doubt any CPU platform mining is going to be worth it.

### Reply 2:
See <link> you just want to see what all this stuff is about you may want to take a look at litecoin which is a CPU only currency. <link>

### Reply 3:
If litecoin ever takes off (and it won't) I guarantee you will be seeing GPU and or FPGA miners. There is no such thing as a ""cpu only"" virtual currency. Where there is a will there is a way.

### Reply 4:
Fair enough, looking at the overall hash rates for litecoin, it wouldn't surprise me if someone has already worked around scrypt complexity. I am VERY skeptical that there are so many adopters of litecoin. 13+MHash maybe. Maybe you are right. Maybe some group wants to take over the chain. I just don't know. In any case, rather than spend $ on a mining rig/GPU it might be better if Itanium miner test drive litecoin or tenebrix or one of the scrypt based cryptcurrencies.

### Reply 5:
The strength in the Itanium platform is parallel operations that are optimized by the compiler (not SMT/HT on the CPU). The gotcha with bitcoin is that a single pass of SHA256 can't be parallelized because each cycle requires the output of the previous cycle before it can be computed. It's basically the same issue you run into with video encoding where information from frame A is required to render frame B, so you can't render them both at the same time, the work needs to be staggered.I did some work with HP Integrity blade systems (Tukwila based Itanium) and on top of performance, they GUZZLE power.

### Reply 6:
I agree with the statement 'where there is a will there is a way', however. no amount of will can make 2+2=5. From what I have read, the algorithm for ltc cannot be done efficiently on gpu, and even if it could, it wont be faster then the cpu. That being said, if it does get done, goodbye litecoin.I am with the camp that says ltc compliments bitcoin. bitcoin==gold, litecoin==silver. For small transactions and quick confirmations it makes alot of sense. if you want to transfer large sums of money, use bitcoin. for small transactions, use litecoin.We have no idea where all this is going to take us, hell maybe every country will have an alt currency. chinabit, ukbit, ruc, iraqbit, etc...

### Reply 7:
Actually ""GPU hostile"" is misnomer. It is ""small cache"" hostile. For example it does abysmally on the Bulldozer chip (which has very limited L1 data cache) and last time I checked it isn't a GPU.Looking at benchamrks scrypt needs about 32KB of L1 cache. AMD GPU have about 8K per SIMD group (16 SP). As GPU become more CPU like and GPGPU becomes more common the need for more L1 cache will grow. Eventually a GPU with 32KB+ of L1 data cache will be released and scrypt won't even blink as it is accelerated across thousands of stream processors.Already NVidia top of the line Tesla can be configured for 48KB of L1 cache. Granted the price makes testing prohibitive but my hypothesis is that it be able to work on ~12 nonces simulataneously (i.e. a 12 core GPU). Eventually even the cheapest GPU will have enough L1 cache.

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11345,"Date: 2023-09
Topic: ASIC chip noobie maintenance question
### Original post:
First of all, thank you to the guys SideHack and Kanoi for their hard work on the ASIC sticks and the dev side of things. It has been a fun small project for me to get the software up and running on the hardware and Im now mining some SHA256 cryptos. The main question to this post is.When it boils down to maintenance on the stick, its understandable they use the BM1397 ASIC chips to process these mathematical puzzles and I would like to know whether these chips can be upgraded with certain deviations of the 1397 or other models supporting SHA256 algo? Will they need new drivers? Or are they just incompatible with other chips?

### Reply 1:
You can only interchange between the BM1397 ASIC variants because the CompacF and the R909 were designed with the BM1397 ASIC chips. The variants are BM1397AG, BM1397AF, BM1397AH, BM1397AI, BM1397AD. However BM1397AG and BM1397AI are commonly used and available. Some say that the BM1397AI is better than the rest and hence more expensive.No need to change any drivers because they are all BM1397 ASICs.You cannot use BM1366 ASIC (Antminer S19 XP) in your CompacF or the R909. You need to redesign a new circuit board and components for it to run. BitaxeUltra board by Open Source Miners United uses the BM1366 ASIC. It's an open source and you can make it yourself.

### Reply 2:
Thank you very much for the clear explanation and what variants I can use. Greatly appreciated SilverDesert

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    ""hardware_name"": ""BM1397AI"",
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    ""hardware_name"": ""BM1397AD"",
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    ""hardware_name"": ""BM1366 ASIC"",
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    ""hardware_name"": ""BitaxeUltra board"",
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21165,"Date: 2016-11
Topic: Having problems getting to the Antminer S3 IP setup page
### Original post:
I am trying to get to the main setup page and having ""This site cant be reached""with multiple addresses such as the one in the manual (192.168.1.99) and theone on the label. I even called Comcast and asked them to help and was with techsupport for about 30 minutes. He said he used dmz to open up all the ports andassigned me a reserved ip which also didn't work. The antminer has the three lights onin the front and seems to be operational.

### Reply 1:
I don't know if this makes any difference but I'm running a lot of other devices like nheqminer suprnova on thesame machine and six other small devices mining. I also have an S1 I want to set up after this. I realize the techsupport guy may have screwed things up more. In that case, how do I reverse what he did? I enjoy learning aboutthis stuff.

### Reply 2:
I really want to learn how to tweak this stuff myself and hopefully not callback comcast.I am able to log in my Gateway > Connection > Local IP Configurationand see:IPv4Gateway Address: Subnet Mask: DHCP Beginning Address: DHCP Ending Address: DHCP Lease Time: (I took out the figures there)There is also the IPv6 section with a lot of figures.I can change and save these things on my side. It also says ""restore default settings.""then there is the XFINITY Network setting which I can't change.

### Reply 3:
Turns out the new Cisco router/modem all in one uses only 10.0.0.X addresses and so all the 192 addresses of the antminers will not work.I have to turn the bridge mode off, get another router to put into the back of the Cisco, which will then only function as a modem, and use that to access the machine.

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23839,"Date: 2022-01
Topic: problem Configuration Innosilicon T2 17.2Ths
### Original post:
I am having a hard time understanding the language, do you mean that when you input the pool settings, click save and then when you refresh the page your pool details are gone and you see the default pool settings?Can you take a screenshot (image) of the pool settings and post it here? you can use <link> or <link> to upload the image and post the link here.

### Reply 1:
Yes <link>

### Reply 2:
You are either using/entering wrong pool/worker detailsor the miner is hacked, try these pools <truncated> that doesn't work, it's very likely you have a hacked firmware, did you just buy this miner from someone else?

### Reply 3:
Ok I will Try Thank YouI bought in alibaba from china 10 pcs second hand only one of them has this problem.

### Reply 4:
hi. I had problem with t1 , I configured it for enter pool , not save and return to default , I tasted some pool but not work , please help me , I did rest factory and update last Version , but not work it Huh.error currently using fixed pool setting.

### Reply 5:
Also, don't forget to check if the pool you set has extra spaces because it won't save if there are extra spaces. So delete them if you found extra spaces when pasting a pool.Also, try to use the software from Innosilicon to change the pool you can download it from here below- <link> didn't notice the image above...Check the notice from the image it says ""currently using fixed pool settings"" it means even you set any pool it will automatically change back to the old pool everytime you change it.

### Reply 6:
Was there ever a solution found for this?

### Reply 7:
I have the same problem and I sent a message to Innosilicon to find information and a solution. They have not given it to me, I have 3 out of 4 miners useless due to the same problem, and I discovered that with a software called ""SecurityTool"" you extract the DNA of the machine to send it to Inno and receive an UNLOCK FIRMWARE from them.My equipment is second-hand and that's why they say they can't help me, it's honestly nonsense. They ask me for a purchase ID with them so that they listen to me I'm worried, I've tried everything and the more time passes I lose money.Somebody could help me? my miners (MODEL) T2THF+

### Reply 8:
I have the software they sent me and the firmware they sent me to unlock the T3. I doubt the firmware would work, but I would send it to you if you would want to try.

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    ""hardware_name"": ""T2THF+"",
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    ""hardware_name"": ""T3"",
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15803,"Date: 2016-09
Topic: Hardware for My Next Project
### Original post:
Interesting, but what do you hope to gain by keeping it closed source? And you might need a bigger heatsink than than!

### Reply 1:
Wow, your approach is seriously interesting. I wonder how much of the current ASIC mining designs are simply hardcoded implementations of the old FPGA stuff -- obviously, there must be some ASIC specific design, but to the outside the entire mining industry seems like an endless scaling up of old ideas.Designing for a specific FPGA and using its timing quirks to your advantage goes against all the basics I hear -- that FPGAs are meant for quick prototyping. This is a good sign of the old hacker spirit.I've also wondered how much FPGA circuit designs are limited by programmers who are used to sequential designs. For example, could you design a clockless network that spits out the result of SHA256. I dabble in analog electronics, where you can do fairly complicated things without any clocking, so I like to imagine how far you could extend these ideas in the digital realm. Then again, I understand it's the analog properties of a circuit that introduce delay, and one way to deal with that delay is clocking.Anyway, good luck with the project I do hope you would opensource it at some point, so we can all learn something after you've earned enough coin.

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  },
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    ""hardware_name"": ""FPGA"",
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15667,"Date: 2015-12
Topic: Weakest hardware to hit the lottery recently
### Original post:
Hi all,I'm wondering what's the weakest hardware (lowest hashrate) that solved a block by solo mining recently (last 3-6 months). I used the search in this forum and also google search but couldn't find an answer to that question. I also checked the stats of the solo.ck.pool but there are probably a lot of solo miners who might not use a pool at all. It seems quite a lot of people are playing the lottery with very littte hashing power and I'm just curious if any of them got lucky solving a block.RomanPS: I just ordered a U3 to play the lottery as well.

### Reply 1:
On the solo pool it was an antminer S3 at about 440GH

### Reply 2:
Wow that is so nice for an 'old' miner. Thanks for the data. Who knows how much will it take for that same S3 to hit it again...

### Reply 3:
Thanks for the answer. Actually I read about the Antminer S3 in another thead. I just thought someone with his r-pi controlled batch of U2 might have stumbled over a block too even though the math doesn't leave much room for this to happen. But even for an Antminer S3 the odds are so small these days. That's why I rather got an Antminer U3. At least I have some work to do to get an keep this little bugger running

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  },
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    ""hardware_name"": ""Antminer S3"",
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11768,"Date: 2012-02
Topic: Proof of concept kernel coming up soon!
### Original post:
Hey all! I'm sort of new to the OpenCL coding scene and I decided I wanted to try my hand at coding a kernel for Phoenix Miner. So, I'm deciding to attempt to use 128-bit (and possibly 256-bit) vectors to compute SHA-512 hashes and then truncate them to SHA-256 for enhanced speed. ^_^If anyone wants to help, let me know! I could us it.

### Reply 1:
I don't think that is going to work. SHA-512 uses 64bit words and SHA-256 uses 32bit.You can't just truncate SHA-512 hashes to get SHA-256 ones.

### Reply 2:
And that's why I call it a proof of concept.

### Reply 3:
What hardware supports the larger vectors natively? I toyed around with the kernel when I got my 5970's... if I recall correctly, the hardware registers themselves were 32 bits so it wouldn't matter if you asked for a bigger data type, you would get no gain (and most likely a loss) because it would simply split the bigger operations into the smaller registers.I did some Googling on the newer hardware, and was led to believe that the ALU's in newer graphics cards support 64 bit operations. Who knows, maybe it's possible to jam two SHA256 operations in a pipeline using the same set of registers without wasting too many cycles cleaning up little messes (like doing two 32-bit adds together in a 64-bit register, but somehow making sure that overflow from the bottom 32 bits doesn't carry into the top 32 bits etc.)

### Reply 4:
The code itself should support uint8 or even uint16 if entered as far as I see in the specs. This is more-so in the planning stages and I'm looking for some assistance in it. Here's the reference for the initial inspiration: <link> if this holds true and the hardware will compute uint8 efficiently, we may have ourselves a more efficient VECTORS8 kernel that can be modified if anyone should ever need a SHA-512 for whatever reason.Edit: The problem I've seen with long long is that it's a reserved function. But I did see that uint8 and uint16 were listed in the reference card and elsewhere.

### Reply 5:
The fact that we can use uint4 (VECTORS4) to increase efficiency should indicate that it's capable of 64-bit processing.

### Reply 6:
The paper suggests using truncated SHA512 as an alternate hashing algorithm for SHA256, when using a 64 bit architecture, a 256 bit hash is still desired, and a more efficient routine is wanted. They run SHA512, and only output 1/2 of the 512 bit hash. It doesn't say anywhere that the hash output of their SHA512->256 is going to be the same as SHA256.Hashing algorithms are used for data integrity and password storage, so on a closed system like storing password hashes, it doesn't matter if the hash is different from another algorithm, as long as it is robust and already subject to lots of peer review. With Bitcoin, you still need a SHA256(SHA256()) hash to come out of the thing.

### Reply 7:
So, SHA-512/256 isn't the same as SHA-256?That's a confusing and embarrassing letdown.Oh well, at least we can play around with larger vectors in the phatk2 kernel for now.Now how to fix that nonce problem...I thought that the biggest difference was in the initial values for the algorithm. If anyone knows for certain if these two algorithms are completely different as shown in the documentation above, I would appreciate it.

### Reply 8:
Well, okay. I'm feeling like an idiot now. Someone care to move me back to the noob section?

### Reply 9:
Yes the two algorithms are completely different.Each ""word"" in SHA-256 is a 32 bit number.Each ""word"" in SHA-512 is a 64 bit number.SHA-256 has 64 rounds.SHA-512 has 80 rounds.The block size (input ""chunk"") of SHA-256 is 512 bits.The block size (input ""chunk"") of SHA-512 is 1024 bits.Both use the same basic algorithms (all SHA-2 hashes do) but there is no conversion from the output of to the output of the other.For example the null hash (hash empty string) <truncated> <truncated> <truncated> reason the articles suggested using a chopped down version of SHA-512 is because for modern CPU the 64 bit operations are faster. So if someone wanted faster performance but only wanted 256 bit hashes (for database compatibility reasons) an ALTERNATIVE to SHA-256 would be a chopped version of SHA-512.

### Reply 10:
Yeah, I thought it was a matter of requiring different constants and changing a few rounds. Sadly, not the case.

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14263,"Date: 2011-06
Topic: Donating/invalid blocks.
### Original post:
So, To me, it looks like not donating at all and not getting paid for invalid blocks gets more bitcoins then donating around 2.5-3% and getting paid for invalid blocks -although more selfish -, but I'm not really sure myself. Which gets more bitcoins? Donating around 2.5-3% and getting paid for invalid blocks instantly, or not donating at all Sorry, I'm still learning everything.

",[]
21343,"Date: 2017-04
Topic: MOVED: Making Money Online. It All Starts With You
### Original post:
This topic has been moved to Trashcan.<link> bitcoin related

",[]
4169,"Date: 2012-09
Topic: selling 10 Icarus FPGA boards
### Original post:
Fourth batch = less power needed. 17~18watts per board.10 boards total hashing = 3.8GH/180watts 38BTC each boardif you buy all ten I can give the wifirouter and usb hub for free.this is the cable you get - 5.5x2.5mm connectorIf you need the adapter you have to look for one like this, 12V at least 2ampEmail to <truncated> or PM here.More info on Icarus: <link>

### Reply 1:
I would buy for 21

### Reply 2:
How many of these are left?

### Reply 3:
1 sold to user YamakaThank you.

### Reply 4:
3 more sold.

### Reply 5:
Are they still going for 38BTC? That seem kind of steep considering ASIC is coming out soon.

### Reply 6:
Soon as in October or November or December or January

### Reply 7:
Lame, its only $300 worth of trade-in. And not doable during preorderI would rather do preorder, and save alot more. Not to mention having ASIC mining early means more income. Good luck lol

### Reply 8:
Anyone interested in these boards please PM I will offer a good deal.

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10756,"Date: 2018-08
Topic: KnC Worse than Gox
### Original post:
Its time to put Knc in the category of the worst of crypto, along with Mt. Gox. Now you can say ""you've been goxed"" or ""you've been KnC'd"" it basically means you've been raped. What KnC has done with the titan, a dishonest manipulative scam that the Federal Reserve would be proud of. 1. They listed Q2 only in an attempt to manipulate buyers. It was never realistic2. they use titan per-order money as a interest free loan to build a data center3. They added ""no refunds"" AFTER some of the first buyers purchased a titan. Screen shots prove this.4. Their power requirements are 50% higher than they indicated, making it a dangreous device in many countries electrical systems.5. They wait until the end of Q3 and rush shipments out. Buyers are reporting incomplete / non functioning systems6. Q3 is almost over and most buyers have still not rec'd their titans. But guess what? it doesnt matter because if you read their Terms it says :""The delivery date is provided for information purposes only and shall not be binding on KnCMiner. The Purchaser is not entitled to refuse acceptance of the Products, withdraw, cancel or revoke the order or make claims for compensation due to any delayed delivery<rest of post truncated>

### Reply 1:
Yea, it look like knc is a very big scam company, too bad, they have great products.

### Reply 2:
They really don't though.

### Reply 3:
so, I guess that means I shouldn't be expecting ""FREE"" neptune they promised to batch 1 customers

### Reply 4:
It is almost october 1st and of course the dishonest KnC has not shipped the Titan. Most likely they staged a few shipments in order to meed the deadline. Who can really trust anything that they say?Regarding the Q3 ""deadline"" it is no deadline at all. The terms say that this date is not binding and the sucker customer will not get a refund even if this deadline is not met. Leverage:KnC 5,000%customer 0%FlexibilityKnC 0%Customer Unlimited (to endure all the delays, misinformation and apologies from KnC)Unlike GAW and other companies who make every attempt to please their customers, KnC's rigid, unyielding, and hateful attitude towards their customers is perplexing. The old KnC seemd to pretend to care, maybe only to lure us into a false sense of trust. I cant imagine any informed miner / trader would ever do business with this company which is worse than gox.

### Reply 5:
Nah, Gox is the worst. at least KNC shipped some products

### Reply 6:
My god, this looks like the perfect forum to put this, at last, a sheep among sheep.Hardware cannot reach a return on the investment. So... NO. Bad idea. Expect to lose your investment. Check calculators with a difficulty change over time to see if in 1 month you will be making the same... you won't be... there is simply too much hardware being brought online by too many manufacturers and they have only hurt themselves. Do not buy hardware, you will loose your investment. They are now knowingly trying to sell you goods they know you cannot profit from, but simple calculators say that you will. Good Luck. (Good Luck to us all, I suggest you all re-post this comment where ever you ended up getting sucked into this black hole business, stop others, stop the new hardware, and maybe we can ROI, this includes all over china so get someone who can translate this to Chinese & get it into their forums to).

### Reply 7:
The only thing they have is overpriced miners for people who cannot do basic ROI calculations.Their 20nm miner is worthless as users paid in excess of 2.5$/GH for miners delivered around mid / end of July. (+PSU cost)The power consumption advantage over good 28nm miners isnt there either.I repeatedly warned KnC customers to take the refund and buy miners elsewhere (when this was still an option).Anyone who hands money to KnC now for nonrefundable miners, is just throwing their money away and making a company with equal moral standards as BFL richer.

### Reply 8:
Most mining hardware manufacturers are scamming their clients. They mine witht he equipment, they sell it when it's worthless... if you haven't realised that's the norm by now, you're a hopeless case.

### Reply 9:
Nobody posted anything today yet, so I will.Tensions are high. Have not received my product as of yet and have requested a refund CCing the FBI, FTC, and a lawyer in Sweden who has already received complaints.After a phone call with them they claim a little over a thousand units were orders (most on the first day).They are still working orders generated from that first day.They may have manufactured 10 units for every 1 unit ordered and have been mining with all of them since the first few days.Slowly driving the difficulty up.Now that it is unprofitable and pressure from the public is high enough, they are starting to release a few miners.They claim that customers did not purchase ROI for a machine, that is literally only designed to do one thing... make money.If it does <rest of thread truncated>
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    ""hardware_name"": ""Neptune"",
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    ""hardware_name"": ""20nm miner"",
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    ""hardware_name"": ""28nm miners"",
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8792,"Date: 2015-01
Topic: Bitmain is one fucked up company!
### Original post:
PM sent*Let us clarify. This unit was sold by the 3rd party.

### Reply 1:
Good luck and welcome to the pain train...Their customer service is radically useless, all they do is tell you shit and don't come through.Unreal incompetence, worst than even eBay/PayPal.You could spit on a wall and get better results than getting anything done with Bitmain customer service.One big run around meant to get you to give up on their crap and buy more.Go read the forums of their hardware, the proof is there, I used to have 10TH/s of their crap.Now down to about 4TH/s and going Spondoolies in the new year.Many long term buyers of Bitmain are fed up of their junk service and switching providers; just like I am.I paid more for my last few orders just to get better service; just got fed up of arguing with their non-sense.Been a buyer since 2013 and still get the ""go fuck yourself treatment""; which is just a run around of incompetence.Again, good luck to ya, seems like don't matter if you bought 1PH/s or 100GH/s you get the same junk, Fischer-Price service.In your case, I should thank you for helping me make my decision a whole lot easier.

### Reply 2:
They may have been sold by a 3rd party, but they were made and shipped by bitmain. December 18, 2014, 5:55 am, Buffalo NY USOut for deliveryDecember 18, 2014, 5:36 am, Buffalo NY USPackage arrived at a carrier facilityDecember 18, 2014, 4:08 am, Louisville KY USPackage has left the carrier facilityDecember 18, 2014, 2:56 am, Louisville KY USPackage arrived at a carrier facilityDecember 18, 2014, 2:44 am, Louisville KY USPackage arrived at destination countryDecember 18, 2014, 1:39 am, Louisville KY USPackage arrived at a carrier facilityDecember 17, 2014, 11:39 pm, ---Completed customs clearance processDecember 17, 2014, 8:05 pm, Shenzhen CNPackage has left the carrier facilityDecember 17, 2014, 4:28 pm, Shenzhen CNPackage has left the carrier facilityDecember 17, 2014, 3:16 pm, Anchorage AK USPackage has left the carrier facilityDecember 17, 2014, 12:43 pm, Anchorage AK USPackage arrived at a carrier facilityDecember 17, 2014, 10:42 am, ---Initiated customs clearance processDecember 17, 2014, 12:15 am, Shenzhen CNPackage arrived at a carrier facilityDecember 17, 2014, 12:06 am, Shenzhen CNPackage has left the carrier facilityDecember 16, 2014, 8:02 pm, Shenzhen CNPackage received <rest of post truncated>

### Reply 3:
Where did you buy from? If you want a warranty you need to buy from bitmain or their official resellers.

### Reply 4:
I got them through cryptocrane, but they are just the middle man. They are warranted for 90 days. Neither of them lasted more than 10 minutes.

### Reply 5:
Are you able to describe the problem? Someone might be able to help if you tell us some more info.

### Reply 6:
I can try. Okay here goes, like I said I purchased 2 S3s from cryptocrane. The shipping was fast and the packaging was great. I was sent the wrong PSU, so I couldn't hook both of them up. I had an old PSU from a scrap computer. Hooked one of the miners up to it. After a couple of minutes the PSU was smoking. Okay, must've been a bad PSU. A few days later my other one arrived. So I hook same miner up to it. BOOM! That one blew.(which was a 750 watter) Well, hell I bought 2 1000 watters. They got here and I opened them up, hooked the same miner that blew the last two up, and within minutes that PSU was shot. What the hell? Bad miner, gonna have to return it and run the other one. Hooked the other miner up to the other 1000 watter and wouldn't you know BOOM again. What the hell are the chances of that? So, I figured maybe I was using shitty PSUs, so I broke down and got a EVGA 1000 Supernova G1, got to hook the miners (yes, wishful thinking, I know.) up and nothing. The one that fried the 3 PSUs is completely dead. No fan no red or green LEDs nothing. The second miner's fans work but nothing else. Again no LEDs. Using their guide I tried troubleshooting them and determined that was a <rest of post truncated>

### Reply 7:
I feel sorry for what happen sir.But this is all your fault. You should not use shitty psu. Miner is power hungry monster. Give them scrap old psu, that what you get back. The miner make psu explode because shitty psu had no overload protection. Then the psu get angry and make miner dead.I hope you learn something from this boom.

### Reply 8:
Always go with 80Plus Gold / Platinum PSUs. 1000W or higher is highly recommended initially, until you get the hang of it.

### Reply 9:
Yes, I've learned my lesson about this. That still doesn't negate the fact that I paid to ship 2 dead miners back, just to have them returned dead. I mean come on, they didn't even try to test them, or they would've known neither of them worked. And then they have the audacity to try and say what they sent me were new miners from a different batch, which is a blatant lie. That's not how a company is supposed to run, I d<rest of thread truncated>
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17137,"Date: 2012-05
Topic: Best combination of ATI Catalyst and SDK? (Ubuntu 11.04 with 5870s)
### Original post:
Hi everyone,I'm currently working on trying to get all 5 GPUs to mine using Ubuntu 11.04 and poclbm, the specs and installed software are as follows:2x Rosewill CAPSTONE Series CAPSTONE-750 ASRock 970 EXTREME4 (3 x16 PCI-E slots, 2 x1 slots) AMD Sempron 145 Patriot 4GB RAM WD 40GB HDD5x 5870 (mix of XFX and Sapphire)ATI 11.12SDK v2.1bitcoin 0.6.2pyopencl 0.92 (with python installed)The mining command: python poclbm.py -v -d 1 <truncated> this setup is not completely working; only 2/5 cards mine (may be a result of bad extenders or b/c they're not molex powered, but let's assume not for the purposes of this thread).SO. What combination of ATI and SDK versions are people using with 5870s? Which works best and why?

### Reply 1:
I use windows 7 and phoenix, so some or none of this may apply to you.If you undervolt to 0.95v and run appropriate memory/core speeds, you -should- be able to support 5 5870s on a single 750W PSU. I have 2 5870's and 3 5830's running at that voltage and clocks varying from 715-880 on the core and 145-170 on the memory and draw 630W at the wall between 2 very inefficient (~70%) PSU's powering the single rig.All 5 cards use un-powered 1x > 1x open-ended risers with PCI-E presence pins shorted on an EVGA 790i SLI Ultra.It does a total of ~1.51 Ghash/sec.Driver used is 11.12 and SDK used is 2.1. Phoenix Config is as <truncated> = Truebackend = <link> = GPU 2 810 5870kernel = phatk2AGGRESSION = 12VECTORS = trueBFI_INT = trueWORKSIZE = 128[cl:1:2]name = GPU 5 880 5870kernel = phatk2AGGRESSION = 12VECTORS = trueBFI_INT = trueWORKSIZE = 128[cl:1:3]name = GPU 4 760 5830kernel = phatk2AGGRESSION = 12VECTORS = trueBFI_INT = trueWORKSIZE = 128[cl:1:4]name = GPU 3 780 5830kernel = phatk2AGGRESSION = 12VECTORS = trueBFI_INT = trueWORKSIZE = 128[cl:1:5]name = GPU 1 715 5830kernel = phatk2AGGRESSION = 12VECTORS = trueBFI_INT = trueWORKSIZE = 128[web]disable = true

### Reply 2:
This is a serious issue and I wouldn't leave it running like that indefinitely, you can be damaging something.There are posts on this forum discussing how much power is required by the PCIe Bus feeding the cards, which I believe is, from the PCI spec, ""125 watts"", I think, so that means while each core is drawing 30 watts, 5 * 30 = 150, you're trying to draw more energy than the system can supply over the PCI Bus.Second issue with extenders/risers; You are adding more distance but adding more resistance and small wires which handle less total current, which contributes to an energy imbalance in the Graphic Cards. Once you go from 4 cores to 5 cores, you need to use powered extenders/risers unless you intend to undervolt the Graphics Cards.With an imbalance, a card or two may get energy spikes that could damage the graphics cards. They still might hash, but lose overclocking ability.

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10762,"Date: 2018-09
Topic: Custom rig for Antminer s9 Water Cooled - 39.2 TH/s with 6 boards
### Original post:
Hey guys,I've been working on a new project for the past months, and here's a video on how it looks so far:<link> me know what you guys think of it.Thanks!

### Reply 1:
Interesting work. Did you use the stock controller?so 40th and about ? watts

### Reply 2:
So these are basically 6 boards from 2x S9j miners, right?

### Reply 3:
maybe they are the waterblock cards<link>

### Reply 4:
Alex is using the s9 waterblocks you can find from alibaba if memory is correct.

### Reply 5:
That's neat. Is the s9 different than the s9i? s9i already mines at 14.5 per bitmain.

### Reply 6:
Really cool. sounds just as loud as any other asic. Any idea in db's?

### Reply 7:
Thanks! 3800 W for power usage and yes, it's stock controller but I added three more ports to the board.They are antminer s9i boards, it will work is s9j as well.No, they are not s9 hydro boards, I am waiting for that to see what's inside.

### Reply 8:
No, I've designed my own blocks, the alibaba ones are not fitting properly on the board.This will work on any S9 machine with a board versions higher than v4 . The older versions don't overclock very well, but they can be run at smaller frequency. The chips are the same but the power module is more stable on the board,that's why it allows better OC.

### Reply 9:
So is there any economic benefit for you to use this rig, instead just using S9? 29 TH @ 2800 WATTS39 TH @ 3800 WATTSHow much did it approximately cost to buy the equipment and make it work?

### Reply 10:
Here's the main advantages of using such system:1.The heat is being driven to exterior very easy. You can install a heat exchanger and benefit from the hot water.2.Reduced cooling costs, it can be cooled with running cold water or with externally mounted radiators3.The allows overclocking ICs with 40%, obtaining more hashing power with less units.4.Reduced service costs, the water blocks are easy to <truncated> electronic components life span, running between 35 and 50 degrees in comparison with 58 to 95 degrees with air <truncated> the necessity of air filtration.For the costs, for 6 boards, the conversion kit is $2000, this includes the following:1. 6 x waterblocks kits (12 waterblocks in total, as it's one waterblock for each side2. 36 Thermal pads used between the board and waterblock3. Thermal putty for the CPU's4. 12 KW water radiator, capable of running at outside temperatures of over 45 Degrees Celsius and still keep the machine at optimal temps5. Water pump 3500 liters per hour6. Watter fittings and water distribution system7. 2 x 2400 W PSU'sThe noise will be under 40 Db, it was noisy because of the PSU fans, but I changed those to bigger fans and solved this issue, I wil<rest of post truncated>

### Reply 11:
So it costs $1000 in parts to mod a single $400 s9....please explain how this will ever even come close to breaking even let alone achieve some small amount of profit.This seems like a massive waste of time and money for a negative return.

### Reply 12:
Sometimes we do things because we can and it's fun.

### Reply 13:
Hi,As i want to try a totally different approach, im curious if you'd sell solely the waterblocks, and what they would cost.Also interested to know how you remove the cooling fins from the chips without breaking them... ?

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    ""hardware_name"": ""Thermal pads"",
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    ""hardware_name"": ""Thermal putty"",
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    ""hardware_name"": ""KW water radiator"",
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  },
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    ""hardware_name"": ""Water pump"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Watter fittings and water distribution system"",
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9326,"Date: 2015-09
Topic: HashFast BabyJet users thread
### Original post:
Based on the success of the Avalon ASIC users thread, I'm posting one for HashFast now that some people have received theirs.Please no discussion about broken <truncated> etc.

### Reply 1:
Can someone get a Kill-a-watt on one of these?

### Reply 2:
I have a mFi power strip so I don't know how accurate it is compared to a kil-a-watt but it says that the miner is drawing 497/498 watts overclocked to 500Gh (650 mhz core clock).For comparison it says the raspberry pi is drawing 2.5 watts.

### Reply 3:
How can you change the clock rate on the miner?

### Reply 4:
Default clock is 550.

### Reply 5:
so it comes underclocked

### Reply 6:
i think they want from their customers to overclock it and void the guarantee. clever!

### Reply 7:
Wasn't it supposed to self tune for max HR based on feedback from the on-die temp sensor, or am I imagining things again?

### Reply 8:
As far as I can tell, the temperature sensor on the die is not working, otherwise it would show up under the ""Temp"" column in the list of devices.See screenshot of MinePeon: <link> have not overclocked yet.. I am a bit apprehensive to OC without a working temperature sensor. I think I'll just wait to hear how other's OCing experience goes before doing so myself. They shipped them at this clock rate for a reason.. I'm sure they tested heavily with higher clock rates and saw stability problems/failure of hardware. There's probably a little wiggle room to overclock, but I wouldn't bump it up too much (especially because of the aforementioned broken temperature sensor.)PS: I'm thinking that the first device hashing at.... 12 Mh (lol) is the CPU of the Raspberry Pi...

### Reply 9:
Can someone link to a setup guide? These baby jets come with no instructions other than to call the number, which is just a voicemail.

### Reply 10:
I have 2 units coming in today. I am curious about how well it can clock as well. But no temp sensor also worries. Me.

### Reply 11:
Will wonders never cease?

### Reply 12:
Better use that 10 days of warranty while you got it!

### Reply 13:
So, how are these networked? Do you have to use the ethernet cable, or can you USB connect to a windows/linux box and mine externally with cgminer?

### Reply 14:
How do you OC these bastards?

### Reply 15:
So far I have one working over a hardwire ethernet connection - I see no way in the MinePeon settings to set up to work over wireless, which is my preferred option.

### Reply 16:
Exactly!Check first video of the <link> ""Guess who got a HashFast Baby Jet today...""-thread @ 1:37<link> from Amy:""...These machines may be overclocked, however OC'ing will void the warrantee and be entirely at your own risk....""

### Reply 17:
People are actually receiving units ? ... wow. I got told in an email they expect January 28th./hopeful

### Reply 18:
Minepeon is built on Arch Linux. Buy a usb wifi adapter (get one recommend to work with the RPI & Arch Linux). You can then configure the adapter in Arch Linux. I had issues getting wifi to work properly on the RaspberryPi and Minepeon. It would lock up on me all the time. I have since been running my Raspberry PIs on ethernet. You can try the Minepeon forums for some help (<link> I think that the newest version of Minepeon has a wifi config area in it's gui. It's still a pre-release version though.

### Reply 19:
The temp sensor does work, check out the cgminer output instead of the (filtered) webinterface.The 1st device is also the BabyJet. You probably unplugged the usb cable and plugged it back in when cgminer was running or something.

### Reply 20:
There is no setup guide included as mentioned. It took me a bit to figure out, but it ships with a ""MinePeon"" which is basically a raspberry pi host software for mining rigs. After finding this out, I located Mine Peon's website which had the default log in information... it would have been nice not to have to hunt for this but I guess I figured it out.There is no wireless.. you need to have a switch/router/hub if you ordered a lot of these and Ethernet cables.Setup Guide:1. Plugin the Ethernet and power into the raspberry pi. Connect the provided USB cord from the pi to the back of the baby jet.2. Turn on the power on the back of the baby jet.3. Log into your router to find the IP (I think it uses DHCP, so yours will probably be different but in my case it was 192.168.0.12) it will be labeled as ""MinePeon"".4. Point your browser to the pi's IP address5. Log in using the username minepeon and password peon5a. The password AND username are case sensitive.6. Edit your pool information in the MinePeon software by clicking on the ""Pools"" tab, hit submit and you're good to go!

### Reply 21:
Has anyone seen a difference between the cgminer reported hashrate and pool reported?Cgminer shows a steady 500GH for me at 650mhz but btcguild says around ~455gh.

### Reply 22:
Cgminer is showing me 422GH/s at stock speeds. Eligius shows < 400GH/<rest of thread truncated>
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22860,"Date: 2019-02
Topic: Avalon 741 help
### Original post:
I have logged into the avalon 741(using a laptop I switched IP ranges to match the Avalon) and switched the IP address range of the Avalon to match my network. I can now connect and log into the Avalon from my network. I logged into the menu and updated the pool info with <truncated> and updated the worker with <truncated> and password of x. The miner is not mining for some reason. Any ideas on why it is not mining?

### Reply 1:
Do not use <truncated> am on a fucking iPad that auto corrects with a fucking vengeance So the line I gave you should be all lower case.

### Reply 2:
Hello everyone I am looking for the Avalon 741 an image for the raspberry pi 3 b +can someone help there?

### Reply 3:
Ja, the + model will not work. also ref Troubleshooting and repair guide for AvalonMiner

### Reply 4:
I've solved the problem.The wifi on the Avalon miner configuration tab has to be turned on for it to mine!I thought just having the controller connected through lan cable would feed the Avalon miner an internet connection. I guess I thought I was connecting to the miner through the browser when it's actually the controller your connecting to.Don't forget to enable wifi in the miner advanced config options!

### Reply 5:
yeah the rasp pi is connecting to the internet .I use a eth cable

### Reply 6:
no I believe you need a 3 not a 3b+I could be wrong but the last I looked this was true.I will look again for you.Edit just looked and found this:<link> looked and you need a rasp pi 3not a rasp pi 3 +See link above it will do the 3 not the 3+maybe someone has a link for the 3+ but I think you need a 3here is a link for a rasp pi 3 at amazon<link>

### Reply 7:
OK thanksthought someone had already done that on the b +

### Reply 8:
You would think so. But I suspect they have a ton of rasp pi 3 in stock and did not bother writing a 3+Dont feel bad I did buy the 3+ for the 851 and had to order a 3So you are not alone.

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17142,"Date: 2012-05
Topic: CGminer help 2.4.1 Freeze after 1 week !
### Original post:
I have run my CGminer about 7 days, and i have about 11 Rigs with 5x 5850 and until today morning i found that some of my CGminer Freeze and stop sending share and i found some funny figure when i freeze something like ""LW:50"" and high figure around beside ""LW""where some of my CGminer still running fine thich is ""LW:0"" you can see that on top of the cgminer !anyone pls help i cannot provide screen shot because it is not convenient and it is far from my house to warehouseso anyone pls help if it happen again i will get the screen shotsry for my English !

### Reply 1:
Freezing could be a power issue, an overclocking issue, a motherboard issue.As for the codes, you should ask in the cgminer thread if someone more knowledgable doesn't reply.Have you rebooted the system to start fresh?

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    ""hardware_name"": ""Rigs"",
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23270,"Date: 2020-05
Topic: my antminer s11 has stopped working please help!
### Original post:
antminer s11 not working the kernel log is as follows :Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 199096K/245760K available (6345K kernel code, 231K rwdata<rest of post truncated>

### Reply 1:
Here are the pictures to indicate you resolving-<link>

### Reply 2:
The problem is decribed <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min voltage: <truncated> iic_index for voltage[176] = <truncated> voltage_tunning, set to 10.180000, <truncated> power voltage <truncated> power abnormalThis is most likely a PSU related issue, unless of course, the 3 hash board are dead, which is unlikely, however, let's not jump into conclusions so fast, your pool settings don't seem right to me, use the following details in the second <truncated> this fails, try resetting the miner and install the latest firmware.

### Reply 3:
You are going to get in trouble with the way you post, please follow this guide.1- Always use CODE function when pasting a kernel log.2-Do NOT quote my whole post.Anyway, I am now almost sure that you have a bad PSU, what is the voltage of your house/farm? is it 220v ?What you should try now is disconnect 2 boards and keep on 1 board only, don't just disconnect the ribbon data cable, unplug the boards from the power supply, try the 3 boards this way, 1-remove board 1 and 2 keep board 32-remove board 1 and 3 keep board 23-remove board 2 and 3 keep board 1Do this with power-saving mode and the pool details I gave you, let me know how it goes, and please allow at least 30 mins before every trial, the miner needs a long enough time to start.

### Reply 4:
i've turned off low powe saving mode and in low power saving sometimes the third hashboard shows some respose and valuesCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Mem<rest of post truncated>

### Reply 5:
And YESTERDAY IT WAS LIKE THIS WAS IT NORMAL? i'd saved the kernal logs of yesterdayAnd thankyou for helping me out in this <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min voltage: <truncated> last_iic_data = <truncated> voltage_tunning, set to 10.180000, <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min voltage: <truncated> last_iic_data = <truncated> voltage_tunning, set to 10.180000, <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min voltage: <truncated> last_iic_data = <truncated> voltage_tunning, set to 10.180000, <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min voltage: <truncated> last_iic_data = <truncated> voltage_tunning, set to 10.180000, <truncated> board[1] voltage: <truncated> board[2] voltage: <truncated> board[0] voltage: <truncated> min <rest of thread truncated>
","[
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  {
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  {
    ""hardware_name"": ""hash board"",
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]"
14393,"Date: 2011-07
Topic: How long does it take you to make one btc at current difficulty?
### Original post:
If you could state how long it takes you to mine one btc ... other interesting info might be what pool you use (assuming you're not going solo!, hashrate and hardware plus anything else you deem notworthy.I am currently mining about 0.1 btc a day with two HD 5850s at about 550mh/s, one on all the time and one on some of the time, once it becomes unprofitable for me I am going to back to just having them in crossfire. I also have a Hd 4850 kicking about, but I am not sure I can be bothered to set that one up as I am missing one or two very cheap things for it but by the time I get them the 80mh/s it'll add will make it totally worthless.

### Reply 1:
We are mining at 1500 Mhash/s with 2x6990 0.85 btc a day...

### Reply 2:
I am mining about 0.43 bitcoin a day (so about 2.3 day for a bitcoin) using a 5870 and a 6970 for a combined hashrate of about 780 MHash/s at eligiusAlso using 5 of my 6 core CPU to mine at 12 MHash/s at BTC guild so about 0.0066 bitcoin a day so it takes about 151 days for that one to come at 1 bitcoin

### Reply 3:
You will average 2.252294 BTC per Day at 3500 Mh/s with current difficulty 1563028thats a tad on the conservative side10 x 6950

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13704,"Date: 2021-08
Topic: Are all pools running non open source stratum implementations?
### Original post:
I was kind of expecting to find some open source implementations of Stratum servers.Seems like all pools are running some proprietary closed source servers. Is that really the case? I hope I am missing something here.The only FOSS implementations is from Slush, but the last commit is from Dec 2016. <link> other one is from braiins (slush again). <link> Is this used by any pools in production?Any pointers will be really helpful.Thanks

### Reply 1:
It has been years since i last setup a pool, but back in the day there were several open source implementations available...The last one i installed was p2pool, which isn't a classic pool implementation, but it worked like a charm.Then, there were yiimp, nomp, yaamp, and a couple others aswell.This being said, installing and maintaining a pool isn't an easy task. It's never a one-click solution and walktroughs seldom work out-of-the-box. Also, the open source implementations sometimes lag behind in forms of implementing new features or new technology.I guess most bigger pools run their own implementations, or at least run heavily modified versions of both node and pool software because they have a better grasp at their own implementations, they can update them faster, they can implement their own mempool management, decide which transactions end up in blocks, add payout logic,...

### Reply 2:
braiins is a miner, not a pool.It's also closed source - they stopped the open source part when they updated the code to a '+' version that is closed source.While it's not considered a copy, it's designed based on cgminer.The original most prolific open source miner is of course cgminer.Latest updates are in my git of course, since I was kicked out of the original git and he shut it down <link>

### Reply 3:
Well you are incorrect there. Only bosminer+ is closed, the rest is the same. Its like calling Ubuntu closed because it brings nvidia drivers... Bosminer is still open, and still works with S9s. Can you rust? Last time you modded cgminer to please Bitmain didn't end very well did it?Open source pools? Sure, here: <link> the thing made by Slush linked by the OP, is NOT Braiins OS, but something you can point miners to, it talks to bitcoind so its exactly as OP said: a Stratum server.Why do you bring the mining client when op was clearly talking about pool server? And where is kanominer anyway? Less words, more code. kanopool also missing, of course, talk is cheap.

### Reply 4:
Not a valid comparison at all.It is like correctly calling nvidia closed because, yes it is closed.You didn't write linux ...Your bosminer+ is closed source, you can't see what code is in it, only what code might have been in it before you closed it, and who knows what changes you have made.For all anyone knows it could be stealing hashes, providing mining information to 3rd parties, passing extra private information to the pool ... etc ... etc ...Last updated more than a year ago - it's pretty much defunct.You want everyone to use the + closed source version, not that one.I'm wondering when the first time was that I modded cgminer to please Bitmain ...The first, second and third time I modded cgminer to include S1/S2/S3, I modified the driver to improve it, then and still is much better than the Bitmain ones for those machines.I fixed some rather major issues in their code, the most well known being the fact that until the S7 or S9, BM firmware would discard blocks if they considered them stale, which also caused problems for p2pool losing valid blocks, but they didn't copy the fix from the public cgminer git I did for that in the S1/S2/S3 back to their code until either the S7 or<rest of post truncated>

### Reply 5:
Braiins OS is Linux, literally. Parent distro is Openwrt 17, which is also used by some other Asic <truncated> has the single addition of the autotuning logic and implementation.Well you can ask Slush directly, if he wants to reply... But that is his software given to Braiins.The question is, why you never pushed the fork button and renamed the project kanominer (or whatever) and continued maintaining it. Same for ckpool.Braiins OS is here: <link>

### Reply 6:
Simple, it's a work of many people, and those are the names they were given.con and I agreed on the name ckpool since c for him and k for me - which again, as I stated, has more code in it by me than him or anyone else.I had commit privs on the git until around 2017cgminer was forked from garzik's miner by con and called cgminer by con before I had anything to do with it.I had commit privs on his git until around 2017I just happen to be the 2nd most prolific developer of it.From now on, cgminer is my git, since con archived his git and closed the forum thread.<link> looks like I created that fork around Sep 18 2011

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    ""hardware_name"": ""nvidia drivers"",
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    ""hardware_name"": ""S1/S2/S3"",
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9257,"Date: 2015-08
Topic: New Antminer S5 Not Hashing and showing Temp of Zero
### Original post:
So I just got an Antminer S5 today and well it isn't doing anything, well it sort of is, I mean it's discarding everything but other than that not doing much of anything. I have tried Multipool.us, Westhash, Coinking.io BTCGuild and none of them show it doing anything let alone the miner itself is showing 0 for gh/s. Now, I know it will be asked so before that, I am using a 650 Watt XFX XTR PSU 80+ Gold, yes I know the PSU is on the low end for power but I wanted to get this up and running before I get my 850 Watt Corsair AX850 Gold PSU on Monday. Anyway any help or insight would be great. If I knew how I would attack my pdf that I took of the screen showing what it is doing.Oh yea forgot to mention I have put frequency all the way down to 200 and no change in hash, and fan1 is running at 120, Asic Status is all zero's. I also reflashed the miner with the software from bitmain and didn't change anything. Also one of the fins on the bottom is kinda of broken, as in it isn't attached to the machine and bent oddly, opened the box that way.Here is some of my Kernel Log if it will help.[ 423.531220] g_FPGA_FIFO_SPACE 4, fifo_space{612}[ 423.536045] ret_nonce_num = 0, <truncated> 423.541<rest of post truncated>

### Reply 1:
Might check this thread here - <link> has a lot of the suggestions that you should try.

### Reply 2:
Tested both boards independently and neither of them will hash, I mean they do great at rejecting everything but won't hash whatsoever. Zero's across the board except for the discarded column.I suppose I will wind up finding out Monday if this is a PSU Issue or not.This is a screenshot of what it is doing.<link>

### Reply 3:
Have you tried the following:1) <link> <link> the two they fix a lot of problems. If this does not work you might try turning down frequency to test PSU. But if none of this works you might have to wait on the other psu and see if it fixes the problem.

### Reply 4:
I am starting to think it is a PSU Issue. Mainly because of what I have read about the stock fan being very very loud upon starting the machine and I didn't hear a peeep out of it. Plus I plugged in my noctua fan and it didn't even do anything after a power cycle, or I have a bad miner.

### Reply 5:
I think I had my Paper Clip in the wrong position. Played with where it went and fan came on all the sudden. Yup, just confirmed it too by looking at miner just now and of course fan is being noisy now lol. Sounds like my darn R9 290x when I am full speed on X11 or something.

### Reply 6:
Glad to hear it works! Yea it can be loud and hot. That is normal though.I suggest using electrical tape to keep paperclip in place. With doing this you don't have to worry about it slipping out of pins.

### Reply 7:
I ended up purchasing a couple of the ""Antminer Power Supply Jumper"" gadgets. Search around, and you get a couple for about $3-4 each, less if you buy multiple. They aren't fancy, but they resolve the issues, and make it trivial to ""power cycle"" your miner when needed. Yes, they are more expensive than electrical tape and paper clip. They even include a little LED to tell you that the power supply is actually powered up.

### Reply 8:
It's not a bad idea at all. I'm so use to paperclips I just keep doing it (besides the nice evga that include a jumper). But those antminer switches are very nice. And they don't cost to much.Something else if you can find a offbrand PSU tester for cheap you can plug motherboard end into it and use it to keep PSU on.

### Reply 9:
I would definitely check the power supply. I have the same issue with one of mine, only to find out after getting a tester that one of my 12V legs was bad on the PSU.Denis

### Reply 10:
A little late he solved the problem - <link>

### Reply 11:
I have got a similar problem.The only difference is I have got temperature '35'.What do you suugest?I have ordered a PSU tester and will check PSU.Anyone who has an idea is wellcome.

### Reply 12:
What model is your current PSU? Can you take a screenshot of your status page?

### Reply 13:
My PSU is Corsair CX750.Pls find below the link of status page.<link>

### Reply 14:
The frequency is 100 because I wanted to try if it is a PSU related problem.I have several PSUs, same brand.When I tried the other one I get some hash at 100 frequency.Can both PSUs may be problematic?When I increased the freq to 300 or 350 it does not hash.

### Reply 15:
I cannot remember for sure on this. Does the CX750 have 4 SEPERATE pcie power cords? Not the connectors but actual cords going to pcie.

### Reply 16:
4 seperate cables on CX750.

### Reply 17:
Try with stronger single rail PSU and then report results.

### Reply 18:
this is good adviceusing a cx750 is using a borderline psu.@ op or @ gabley12also freq 100 is not too stable try freq 250 let it run for 20 minutes see if you get 750 gh or a little better then that

### Reply 19:
I will r<rest of thread truncated>
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13398,"Date: 2015-06
Topic: What to use to proxy my miners?  BFGminer vs Mining_Proxy
### Original post:
All,I am starting to get to a high number of miners and I am looking to control their pool in a central location, as well as the other benefits of having only one connection out to the pools.Anyone have a preference? BFGminer or Mining_Proxy? Any problems? Any likes over the others? Any stability issues?TIA,MC

### Reply 1:
So just FYI I found that BFGminer has issues with old miners like BTCGardens they hash at 10% of what they should with 90% rejects and causes the S3's to continuously restart its cgminer every 2-5 <truncated> so far no issues yet.

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20686,"Date: 2015-10
Topic: USB Device!?!?
### Original post:
Hi Guys!I am probably just too dumb, but I have configured my CGMINER but it just won't start.It always tells me that it can't find no devices and that it wait's for an USB hotplug... I just got a PC and Laptop that keeps running at my university for nothing (it has to be running) and I just want to use both for mining.Pls help! Cheers Stefan

### Reply 1:
which OS did you use?It sounds like you want to use your cpu instead of an asic, in that case did you do this when <truncated> --enable-cpumining && make

### Reply 2:
Windows 7 - yeah wanna use CPU - where do I enter this line?

### Reply 3:
I'm not really familiar with mining under windows... For linux, you just install the dependancy's, clone the git source and compile cgminer for the ASIC you're going to use (or in your case, compile it for CPU mining).I guess there must be precompiled binaries available for cpumining... Altough i would suggest you mine something else. There are a couple altcoins out there that can be mined with your cpu, but mining sha256 (bitcoin) with your cpu will make you no BTC at all...

### Reply 4:
Don't do this on your laptop. Honestly you will thank me later on. You are not going to be mining much with cpu at all.Pushing a laptop CPU is not good longterm they just don't have the cooling as desktops have. They are not meant for high intensity 24x7. I would not risk it and keep the laptop for just regular use. And after you mine with desktop you will see CPU will make you barely anything.

### Reply 5:
Cgminer only mines with dedicated bitcoin mining hardware plugged into your computer. Neither your CPU nor your GPU can be used to mine bitcoin with.

### Reply 6:
I would second this if your wanting to learn but in a order for a compac. You can learn mining for cheap and it's also fun.I have a feeling OP is in the dorm or something with ""running at my university "". So he might be wanting to mine on ""free"" electricity. If this is true look at asics that are used and do some ROI math. Also look into sound and heat. Some you honestly would not want to mine with if your in some one room dorm room type space.I've seen some really nice school housing and some really old housing so I'm not sure what OP has.

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9461,"Date: 2015-11
Topic: Need Recommendation What's the quietest, most power miner for use in home-office
### Original post:
Hello all. I've seen this question asked over a year ago <link> and was hoping that there is a newer solution to this question. I'm looking to buy a miner and want to know what miner can I run in my home-office that will be quite? It needs to run on 110 volt as I""m in the US. A friend is running a SP20 down-clocked to 1.3 and it is still a bit loud. I'm running two Rockminer R-box 100's. They are quite by not producing much. Thank you in advanced for your recommendations.

### Reply 1:
SP20 is not really a quiet miner. Avalon 4.1 is most quiet factory made and you can down clock it a lot, but it's a little higher priced miner the say S5. Some run S5's on lower freq and do fan mod's.It really depends on if you are willing to mod. Phil has a thread on making S7's quiet. So really all depends.

### Reply 2:
buy the s-7 right nowbatch 4 trust me<link> will teach you how to get it to be quiet.if you are usa based I can send you some muffler material. I have a lot left over.and the s-7 batch 4 is a screaming bargain at 3.43 coins plus a bit more for shipping.you can under clock them to 3600gh- 4000gh lower the fans use the muffler and they are very quiet.soundproofing info thread<link>

### Reply 3:
Thanks for the replies. I have 2 Evga 1300 G2 psu's laying around that I could use. Will the S-7 Batch 4 run on 110?

### Reply 4:
Yes it will

### Reply 5:
did you put the order in when I said to?the s-7 batch 4 sold out and now you have the the s-7 batch 6 it cost more btc 4.00 vs 3.43 and it ships on dec 17 the batch 4 was shipping in nov.I really hope you listened and ordered the batch 4 when I said to .Basically if you did you saved about .6 btc and the s-7 batch 4 will hash at 4660ghthe s-7 from batch 6 is a different design and will hash at 4050gh.

### Reply 6:
No I did not. I just got back into town and just read the post. Should I be concerned about the different design for batch 6 and does it change anything with respect to noise and modifying?

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    ""hardware_name"": ""Rockminer R-box 100's"",
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12117,"Date: 2012-11
Topic: beowulf device..
### Original post:
BEOWULF Device?ive got 15-20 d510 mobos, not sure what i can haywire into them as far as V-card goes.who has an interest in such a project?i mean crude beowulf assembly for mining.reply this thread, if so.eventually this thread will get taken over by people who know way more than i, but its a good place to start.. i guessoz

### Reply 1:
ok i should move this to a hardware category as soon as i figure how..

### Reply 2:
CPU mining for all of those combined might result in maybe a few tens of Mhash/s at best. A $1,000 ASIC shipping ""real soon now"" can mine at 2,000 times that.A $100 GPU even can mine at ten times that.

### Reply 3:
Beowulf cluster for converting media files, yes. Beofwulf for btc mining, no way in hell.

### Reply 4:
not looking 2 mine...sure, might draw 25 btc after about 25 years...thing is,...rather than xx Kwh doing nothing,...as a node in a network...F.I.T.B. ??

### Reply 5:
The problem isn't even the capital costs, it the operation cost of running all those servers. Not worth it IMO.

### Reply 6:
Definitely not worth it IMHO, it would be a waste of power, it wouldn't be worth the time either.

### Reply 7:
Litecoin?

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    ""hardware_name"": ""$1,000 ASIC"",
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22254,"Date: 2018-01
Topic: S9 dropping to 9TH/s
### Original post:
Hello everybody! We've been online with 24 Antminer S9s for a few days now. We've been having awesome success. We've been sitting between 60 and 80 celsius.The only issue we're seeing is that one of our miners drops from 13.5 to 9 TH/s. This fixes with a reboot some of the time, but I'm wondering about ways to solve it. I'm assuming it's one of the hash boards causing the trouble.I don't know if this is a common issue or what, but any advice would be appreciated.Thank you!

### Reply 1:
Maybe you have some problems with your hashboard, can you maybe post screenshot of that miner UI when that happens?

### Reply 2:
Thanks for the reply. Here's a screenshot, which leads me to believe one of the boards isn't hashing properly: <link>

### Reply 3:
You could try for start to change pins of PSU, and MAYBE that will work.. If it doesn't work...well... someone else will maybe have some suggestion.. If it doesnt..well bad news for you.

### Reply 4:
I think this post can be removed, actually. Sorry for the trouble! We reseated all of the connections and, for the time being, seems to have resolved the issue.Will report back with any changes. Thanks again.

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23609,"Date: 2021-06
Topic: MicroBT Reviews
### Original post:
Is there any place for reliable reviews on current miners supplied by MicroBT?Quality, Reliability, and Customer Service?Also, have they opened up their manufacturing outside of China in SouthEast Asia?

### Reply 1:
There are some people here who make reviews for miners check this user ""HagssFIN"" it has some whatsminer reviews and guide under his signature.About manufacturing, I think they don't have a company outside ""Beijing, China""

### Reply 2:
Thanks!

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11641,"Date: 2011-09
Topic: CGMINER CPU/GPU miner overclock monitor fanspeed in C linux/windows/osx 2.0.4
### Original post:
I installed 2.0.4 last night and checking it this morning my efficiency is at 16%. The previous versions had 80+%.I haven't changed any of my settings.Sam

### Reply 1:
I had similar problems starting with 2.0.0, however, my shares/minute stayed the same or improved, so I didn't worry about it. I think (guessing here) it is lower because more work is queued to prevent you from running out of shares and dropped because they sit too long.

### Reply 2:
Suggested fix.Hi I run a pool that takes a different approach to pool servers. I use many servers and not just one and round robin them on one domain. CGIMine is the only miner I know of that does not stick to the one ip when it makes get work requests and submitting its work thus it would get work from one server on the round robin and submit it to another that rejects it.I am thinking of creating a balance server to fix this issue however if the developer can fix it that would be better.Currently poclbm works fine it sticks to one server ip unit there is a problem then request a new IP address from the domain name rotating it to another server automatically. If you are not familiar with round robin domain the way it works is that if you ping nmcbit.com you will get an IP address clear your DNS cache and pint nmcbit.com and you will a different IP. This is great for web sites not so good for mining if the miner does not use the same IP over and over again until there is a problem.Using multiple servers gives me the appearance of 100% up time (once I get all the bugs out lol) as I do upgrades. Last night was prime example where I was able to rotate out pushpool with PoolServerJ wit<rest of post truncated>

### Reply 3:
No wonder I'm getting 80% rejects on your pool, I thought it was just overloaded and my connection was too slow to get work submitted without a faster miner beating me to it.

### Reply 4:
Use <truncated> you will get less than 0.10 rejects that's where I will add my code. Check my stats...<link> the guys with ZERO or less than .10, those are CGIMiners connecting to just one server instead of nmcbit.com.

### Reply 5:
Your pool is namecoin.There is no point posting in this thread.The bitcoin+namecoin mining scam idea will not work with cgminer.It cannot mine more than one chain at the same time.

### Reply 6:
It works with CGIMiner the problem is my pool does not because of the round robin. If you connect to just one server CGIMiner KICKS ASS!Also you can mine more than one chain at the same time it's not a scam anymore than bitcoin is scam. You sound like my viewers of my YouTube channel when I told them about bitcoins.SCAM!The great thing about merged mining if it works well is that we can have more than one currency and that will not be inflationary anymore than copper is inflationary to gold. lolHave a good one.

### Reply 7:
Con, regardless of you opinion on NMC vs BTC et al, round robin DNS is a standard thing it would be good to support. Unfortunately, I know nothing about programming, but here's a thought on a simple solution that might keep cgminer better than the others... What if cgminer keeps track of which work belongs to which IP so that it can take advantage of that instead of only using one IP or sending work to the wrong server? I suppose you could actually choose one IP and fail over to others by default and only do this when --load-balance was selected, but then if someone wanted a backup pool as well, they would have to work for it or only work for one server in any round robin pool. One other thing to keep in mind would be that a slower mining device might be better off not using all of the servers depending on much the load-balancing might negatively affect the shares found vs shares discarded.

### Reply 8:
The only thing 'merged mining' does is take hashes away from Bitcoin and give them to another chain (in this case namecoin) but pretend that it's good for bitcoin.It isn't good for bitcoin.It is good for namecoin and bad for bitcoin.It's a scam because namecoin people won't admit the truth, and thus try to convince others by deception.I'd wonder how people would react if SolidCoin 2.0 did merged mining ...Anyway, AGAIN, cgminer cannot mine 2 chains at the same time.So there is no point looking for other changes to suit you when it will never work in it's current incarnation anyway.I look at it this way: Would I want to lower cgminer's extremely high ability to avoid rejects and stales just so I can give away hashes to namecoin?No, of course not.

### Reply 9:
Instability Since 2.0.3:I was running stable with 2.0.0 through 2.0.2, but with 2.0.3, my GPU started dying. I was hopeful that the auto-fan changes in 2.0.4 would fix this, but they didn't. As such, I have two questions:1) Does cgminer 2.0.3+ have additional performance improvements that might require me to lower my OC values some more like an earli<rest of thread truncated>
","[
  {
    ""hardware_name"": ""CGMINER CPU/GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  }
]"
9052,"Date: 2015-04
Topic: Bitmain Antminer S3 on MAC OSX
### Original post:
Hey all, I know the S3s are standalone.. i am having issues connecting with it to configure it... any suggestions? I went through Doges comprehensive guide but since i am running a different OS I was not able to follow 100%.

### Reply 1:
OS has nothing stopping it from configuring S3. Are you able to access miner?

### Reply 2:
Thats what I am having difficulty doing is changing the subnet from 0 to 1.

### Reply 3:
Plug a ethernet cable from your laptop to the miner directly. In your laptop's network settings, configure your Ethernet card with a static ip in the same range subnet as your miner.Example: If your miner is at 192.168.1.99. Set your computer to something else 192.168.1.34Now you will have access to your miner with your internet browser.

### Reply 4:
Yes this is correct. I was used MAC OSX with S3 last year. May be you have a difficulty to find networking settings in OSX. Open System Preferences and look for Network icon. On the left side choose Ethernet and there is a settings on the right side of panel. Just change the value in the Configure IPv4 from DHCP to manual address and put IP mentioned above.I recommend to switch your S3 for using DHCP and then switch back you Mac to DHCP too. Next time will work without any changes to network configuration.

","[
  {
    ""hardware_name"": ""Bitmain Antminer S3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ethernet cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MAC OSX"",
    ""hardware_is_owned"": true
  }
]"
3830,"Date: 2015-02
Topic: [ CLOSED ] VX-1 Miner Group Buy - Free 1 TH/s Miner Giveaway
### Original post:
This thread is to gauge interest in a group buy for the VX Miners VX-1 Miner. I WILL NOT BE COLLECTING ANY FUNDS until i see if we can fill all 50 slots in the group buy, at which time i will make an announcement that all 50 slots were filled and payment will be due within 72 hours.The miner specs can be found here: <link> & shipping is still estimated for early to mid March (its contingent on when the bitfury chips ship if i understand correctly)I am not the one making the units, i am just the one who tried to negotiate the best deal i could for the forum, as you read you will quickly learn i am not the worlds best negotiator. The price of the unitis $2,550usd ( told you i am not a good negotiator ) <truncated> I did manage to get us free shipping if we can take 50 units, and 1 free miner for every 50 sold, in which i will use an online service that the buyers agree on to randomly select the person who wins it. I will exclude myself from the drawing to make it fair.I have spent about a week talking with Larry from VX miners and will be getting us some fresh pictures for this thread hopefully tomorrow. I also did speak with Nwools (Nate) to confirm that the two guys from VX Miners <rest of post truncated>

### Reply 1:
nwoolls please let us know if these guys contact you from now on.It would be nice to know

### Reply 2:
I wish those 'trolls' had done this on the other messes I am down a few BTC over. Business people do not act this way...ever. These look like children tbh.

### Reply 3:
I would advise you to keep using this account for a little longer so that you don't make it completely clear what you are.Good luck with your miners!

### Reply 4:
You can always tip me for my contribution <truncated>

### Reply 5:
I would but my wallet is still in the ER with massive blood loss & shock. We do not know if he will survive but have a team of trained monkeys flinging poo in as many directions as they can.

### Reply 6:
I'll always be happy to prevent even one person from sending away their hard earned money for something they will never receive.

### Reply 7:
No worries bro.To be honest I am glad that I have managed to save a few people quite a few BTC

### Reply 8:
That's what I was trying to do way back in post #21 of this thread. Simply opening the 4U case to show the miners would have helped, but as we see so far, there was no miner to show. If actual pics cannot be shown, then beware to the purchaser.

### Reply 9:
TerraHasher = The Observer = who else?Please seek professional help.i'm anon no 3 in the list edit: of miners reserved not of alts for terrahash

### Reply 10:
@railzand: Damn, you forgot to mention me! But I'm S4VV4S as well, cause I like to contradict myself. Hope The Observer will try to get in touch with the genuine interested, in a PM or otherwise, and proceed with it by email. No need wasting my time on the hijackers here.

### Reply 11:
You are not S4VV4S...Only Chuck Norris and S4VV4S can be as cool as Chuck Norris and S4VV4S.Sorry no room for more

### Reply 12:
You called it - good call

### Reply 13:
but who wants to see an empty case? all the mystery will poof away!

### Reply 14:
Interesting that all bitcointalk members would be banned for the enthusiastic doubts of some bitcointalk members.Were these devices proven to be true, I would still be up for getting one. But, the head-in-the-sand approach of the company can hide all sorts of evils, from the simple I-don't-care to the <truncated> And this approach is also inconsistent with one of the developers' stated claims of being sick of getting the runaround from companies that want to be trusted without proof and then effectively don't deliver...

### Reply 15:
<truncated> the way you use lower case I - oh, just like observer

### Reply 16:
All,I hope this finds everyone doing superbly. Before I get started please let me say I have 0 skin in this game (having not risked any coin) BUT a buddy of mine does. Said buddy was speaking with me recently and mentioned there was a new miner company out of Alaska called vxminers (at vxminers.com) on the block and that there had been a sizeable hardware purchase made by said buddy of said mining hardware from said company. My buddy seemed rather elated of purchasing said hardware BUT had heard some nasty these folks must be scammers rumors. My buddy also mentioned that said mining hardware company had made their prototype PCB production run at a well know, US domestic PCB full assembly house. It just so happens that I know a guy, who has a sister, that is friends with a dude, who is married to a girl that is a regional VP of sales for said PCB manufacturer. So I asked the guy I knew who has a sister, that is friends with a dude, who is married to a girl that is a regional VP of sales for said PCB manufacturer if said PCB manufacturer had ever shipped product to Alaska. The answer that came back <rest of thread truncated>
","[
  {
    ""hardware_name"": ""VX-1 Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining hardware"",
    ""hardware_is_owned"": true
  }
]"
10927,"Date: 2021-01
Topic: My S9 Heater version
### Original post:
I don't have access to my philipma1957 account and this one does not have any merits.When I get to my philipma1957 account I will drop some serious merits on this.your design is way better then mine .I have a s9 to work on I will do so later today.I will do a copy of your design. Nice work. Cheaper then my idea and easy to do. Nice!

### Reply 1:
Thanks ! with pleasure I have edit my first post for more precision And . . . .!!!!!!!!!! HAPPY NEW YEAR !!!!!!!!!!

### Reply 2:
Here are 12 merits.To anyone that reads this he truly took my design and really improved it .Nice job.Lets give him a few more merits as he deserves them.

### Reply 3:
Thanks ! I'm embarrassed Hum... after reflection, i thinks, is possible to improve efficiency of cooling, by make 2 litle hole (arround 20mm) at two side... In this ""project"", my idea is make directly flow at center hasboard, but litle problem, the up and down chips at border hashboard is litle more hot, is not a problem (miner show final temp by chips 63 i thinks), but just funny to improve this :p

### Reply 4:
Are both fans exhausting: drawing air in, over the board, from the drilled holes?

### Reply 5:
I think a few holes on each side may improve even more.maybe a little smaller. lower 1/3 from intakehigher 1/3 from output. _________________ | o | < | o | <<<<<<< <truncated> may work better.but your idea is easy and cheap.

### Reply 6:
__________________ fan flow | o o | fan flow<<<<<<<<<| O (50mm) |>>>>>>>>> | o o | <truncated> my idea two side, so 8 new holes arround 20mm i thinks is good size i have expected air flow, and up and down the flow is litle down, so by 8 news litle hole (not to big to respect the pressure) compensate this ""problem"" for more efficiency

### Reply 7:
Hi all, i try to recycle part of miner ...I have take all parts, is funny :-T9 case-T9+ controler-S9 hashboard-My custom firmware (but compatible with LPM for exemple or other)I try at :-525mhz/850mv (max temp 62)-700mhz/910mv (max temp 80) Just look fan speed and temperature , ambient temp is arround 22c , Very good resultat !!! and very low noise, the psu make more noise :p, by very low cost (free) just make 2 hole (arround 50-60mm) Just for precision, on my ""calculs' is very important do no make more larger of hole for assure to make air pressure at center hashboard at low speed fan, make hole at perfect center of miner at two side (look picture, so in absolute, juste turn the ""in"" fan).For finish, VERY IMPORTANT, air flow for the two fan point external... so, air flow take on miner ant outake external ! the fan blade need place in interne... just see picture ! for assure, on power on, the air need to outake on 2 fan ! no admission, admission is NOW on two news hole ! And, VERY IMPORTANT to, you need TWO SAME fan !!! if not, the air flow is not correct, and is possible one part of hashboard is not in air flow, and overheat !

### Reply 8:
That's an amazing design indeed, however, I have one concern which is the pressure on the fans' motors, I don't know much about physics and airflow, but I think when two fans are pushing air in the opposite directions they will collide with/against each other thus effecting the air flow specially in the middle area.to illustrate more using your design. __________________ fan flow | o *** o | fan flow<<<<<<<<<| *** |>>>>>>>>> | o *** o | <truncated> I put the *** is the main area of concern, the hot air around that area may stay there for a little longer than the board can handle ,also both fans need to put extra work to be able to spin against one another, fans are cheap, but if they break every couple days then well !!if i am wrong please correct me

### Reply 9:
your purpose is true only if the hole is smaller than air flow debit ! the proof is here, temp is very low on my configuration with my design, the hole are sized in fonction, so, if you turn the fan at full speed, ok, the hole is to small for this, but not interrested by this, my idea is make small pressure, just for good flow, at low speed fan ps : Philipma1957, you have try this ? what results ?

### Reply 10:
Temp is low might also be due to a few other reasons, having a single board in the miner is a huge advantage, also I am not sure where the temp-sensor is exactly located, if it's far from the middle, then the reading can be way too off , if i am not mistaken the temp sensor is somewhere near the edge of the board (exhaust side), so in theory, temps in that middle part which i am worried about could very likely be a lot higher than what shows on the miner status.Please don't get me wrong , I am not underestimating your abilities, I know you know much better than me in this field, I am just trying to discuss potential issues which might require some <truncated> did you arrange this on forum? wish you best of luck.

### Reply 11:
right now i am monitoring the solo.ckpool super rental trying to squeeze every dime i can for the ten<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9 case"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9+ controler"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9 hashboard"",
    ""hardware_is_owned"": true
  }
]"
11781,"Date: 2012-02
Topic: Phoenix 2 beta discussion - Feedback
### Original post:
<truncated> = +clbackend = XYZverbose = true[cl:0:0]kernel = diakgcnaggression = 12vectors2 = truevectors4 = falsevectors8 = falseworksize = 256[cl:0:1]disabled = <truncated> = true[web]disabled = trueAbove config generates ""Detected [cl:0:0]: [Tahiti 0] using opencl (rating 2)"", which I don't understand. Shouldn't it simply use the kernel specified and tell that autodetect had been overridden by own settings. Another thing I don't understand is, why getDevice() and autodetect() reside in <truncated> I dislike the idea, that these functions are derived from there, because opencl is simply another kernel folder. I think they should be placed somewhere else (have no good idea currently, but perhaps in PhoenixCore.py).The supplied phatk2 version uses stuff in opencl\__init__.py, too via ""opencl = <truncated> which seems sort of not ideal. I think every kernel should specify his own options and stuff, even if they are the same. Your idea was perhaps to edit only one place, if you add new changes, but for addon kernels like diakgcn I really have to specify my own options, which I would promote as a rule for all supplied or addon kernels to be better structured and to be independend of t<rest of post truncated>

### Reply 1:
That's because you still have autodetect = +cl in the config file. Any devices with specific settings defined in the config file will use those instead of autodetect. The autodetect messages are currently displayed even if the settings are overridden by the config file. This will be clarified in a future release by either hiding the autodetect message or changing the message to indicate that the user-defined settings were used.The reason we have the device detection code at the kernel level is so that it can support any type of device. For example, the current FPGA miners don't have a standard API, which makes including this functionality in the Phoenix core a bad idea. We would have to add support for new devices into the Phoenix core. By doing these functions at the kernel level, it allows other developers to support new hardware with no changes to Phoenix itself.Using functions from opencl for other kernels isn't required. This is simply how we decided to implement the supplied version of phatk2. Kernels DO NOT need to be implemented in this way.Thanks for this code, I will modify opencl/phatk2 to use this method of detecting CPUs.

","[
  {
    ""hardware_name"": ""Tahiti 0"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGA miners"",
    ""hardware_is_owned"": false
  }
]"
15782,"Date: 2016-07
Topic: CK Solo Pool Stats seem way off, any ideas?
### Original post:
So before the halving I switched my 830gh Tube miner over to CK's solo pool: Here what the site reports <truncated> ""745M"", ""hashrate5m"": ""4.75G"", ""hashrate1hr"": ""7.33G"", ""hashrate1d"": ""5.71G"", ""hashrate7d"": ""1.79G"", ""lastupdate"": 1468106473, ""workers"": 1, ""shares"": 296000, ""bestshare"": 1547912.9142415167, ""bestever"": 1547912, ""worker"": [{""hashrate1m"": ""745M"", ""hashrate5m"": ""4.75G"", ""hashrate1hr"": ""7.33G"", ""hashrate1d"": ""5.71G"", ""hashrate7d"": ""1.79G"", ""lastupdate"": 1468106473, ""shares"": 296000, ""bestshare"": 1547912.9142415167, ""bestever"": 1547912, ""workername"": <truncated> it shoots up to like 40-50g/h but nothing like what the tube is reporting on my side. Any suggestions ?

### Reply 1:
Yes, post in the thread for that pool.<link>

","[
  {
    ""hardware_name"": ""830gh Tube miner"",
    ""hardware_is_owned"": true
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]"
9927,"Date: 2016-08
Topic: Antminer S4 fan issue
### Original post:
I just bought a used S4, and it ran ok for about 12 hours. It is hitting 80C and shutting down.With the top cover off, the front fans dont run at all, with the top cover on the run, but I think it is just because air is being pulled through by the rear fans.On the S4 I already had, all 4 fans indicate about 3600 rpm.On the new problematic unit, the rear fans show 4400 rpm, the front fans indicate 1080 and 0.Do I need new fans? Is the fan driver the problem?I appreciate any help the group can provide.Les

### Reply 1:
I'd say it's worth trying new fans first or maybe swapping front ones to back seeing as you know the back ones work. Swap them over and see if they work on the front. If they do then it's just the fans that are dead

### Reply 2:
Also before swapping the one showing 0 is it not spinning? Just checking guessing so but good advice on swapping to see what it does. A good article I used a while ago when I had S4's was this: <link> has very good recommendations on fan replacements, and of course you could order from Bitmain or BitmainWarranty. I did try one of the Sanyo's long ago they do have more RPM. But guessing most stick with Delta's when replacing.

### Reply 3:
Thanks all. I swapped the fans, and the problem follows the fans, not the connector position on the PCB.New fans ordered.

### Reply 4:
Thats pretty common with s4's at this point. The fans are starting to die on all the ones I had.

### Reply 5:
S4's are kinda dated at this point and most likely a lot have had multiple owners. I know I sold mine long ago and upgraded to S5's at the time. With them getting older having a extra fan on hand is a good idea. If multiple S4's maybe even a few, and make sure to clean them they can get very dirty over time. I like using compressed air personally, and if any dust on fan's wipe them off. I owned a few a while back and only had to replace 1 fan. I used on of the sanyo's from the article they recommend, think I got it from Amazon at the time. But having extra parts is really part of mining to a certain point specifically if older gear.

","[
  {
    ""hardware_name"": ""Antminer S4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""front fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rear fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan driver"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""extra fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Sanyo fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Delta fans"",
    ""hardware_is_owned"": false
  }
]"
16382,"Date: 2022-12
Topic: 🤔Why does <getrawmempool> return empty?🤔
### Original post:
Why does <getrawmempool> return <truncated> <link>

### Reply 1:
Shouldn't you use the command ""bitcoin-cli getrawmempool true"" ?

### Reply 2:
I am getting empty array or json<link>

### Reply 3:
You are probably not fully synced with the blockchain, run getpeerinfo command and check for bytes recv.

### Reply 4:
FIX Bitcoin Config: blocksonly=1 TO blocksonly=0

",[]
17062,"Date: 2012-03
Topic: weird 100% usage problem in my rig
### Original post:
Hi there,I'm currently having some kind of weird issue in my rig. The rig itself consists of some cheap asus board, together with a 5850, 6850, 6950 and a 6770.they all used to work just fine for the last months.So the other night, I noticed on my mining tool, that my 6770 went offline, while all other cards continued to work. I thought, fine, I'll reboot the rig and it'll be all fine again.after rebooting, all cards were still detected, X11 was starting up and not freezing. however when I started the second worker, I noticed that the system became laggy, so I tried to htop and found that all poclbm instances were using an entire core. So I did another reboot, noticed the problem still being there, used another pocl(newer version) - problem still there. I went to hashkill-gpu, which refused to start with no reason. fine again. I then tried CGMiner which told me on start that it couldnt fire the 5850, then started all other GPUs and also had the 100% issue. I thought, ok, maybe I raped the 5850 too hard over the past. but it wasnt that. after rebooting with the 5850 detached, I found the other gpus still using 100% each. So I reattached it, and tried mining anyways. despite all gpus<rest of post truncated>

### Reply 1:
I had this sort of weird ""almost working"" behaviour when my motherboard died. The workshop only believed me when they couldn't get it to boot.

### Reply 2:
hmm, the board still boots up fine, had it offline for some time too.However, I cant really check on the board, since the only GPU on it that still delivers a display signal is too far off to reach the peg slot that the board is pushing its display information to. However, did you remember what part on the board failed?also, does anyone know how to flatten the mainboard again(the board is screwed on the rig, and, well, it has taken a kind of wavy shape over the last weeks...

### Reply 3:
Dunno what part, it just wouldn't boot properly, stopping at GPU initialisation. Cards would sometimes power on and often wouldn't. Taking them all out and putting a basic card in it still wouldn't reliably start up.

","[
  {
    ""hardware_name"": ""asus board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6950"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6770"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""motherboard"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""basic card"",
    ""hardware_is_owned"": false
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]"
10973,"Date: 2021-07
Topic: Is it possible to run S19 Pro with a second or a dual PSU?
### Original post:
Hi, is it possible to equip the S19 Pro (110 Th/s) with a second PSU? The manufacturer of our immersion system has customers that power the S19 with a 5000 watt PSU. Together with the liquid cooling the S19 Pro run with 195 Th/s on average. When the braiinsOS+ runs on the S19 soon, the efficiency will probably go a bit higher.

### Reply 1:
The S19 - and ALL miners using a built-in PSU - use custom PSU's that cannot just be replaced with a different one. These miners use a programmable PSU that the controller talks to for setting the chip string voltage vs using a fixed 12VDC supply followed by on-board 2nd stage DC-DC regulators.PSU voltages can now range from 15-21VDC depending on make/model of miner and the miner settings.

### Reply 2:
Also I don't think it's sustainable to run an s19 Pro at 195TH/s by adding a second PSU, you might just end up burning the chips or something - even if it did work for a few days which I think is unlikely.

### Reply 3:
I have been thinking about this. Braiins after market firmware allows you to pick voltage . An aftermarket firmware could bypass the custom psu and run the gear at a set voltage.No auto tuning say 3 freq choices and 1 voltage choice. 13 volts for sake of argument.this means you could run s17 or s19 with a 13 volt psu but underclocked.Now off the top of my head. the minimum voltage of the s19 psu is 12 volts.and the minimum voltage of the s17 psu is 14 volts.I will go back and check thats19 psu is 12-15 volts<link> is 14.5 to 21 volts<link> would be possible to use any psu with say 13-14 volts for the s19 with a properly done aftermarket firmware.and a 16 volt psu would run the s17 you have less frequency choice but it would work.All this is the industry making good gear trash due to no psu <truncated> way to fuck the miners.I have 4 units over 200th dead due to psu issues. so I have 1.45ph not 1.65ph mining.

### Reply 4:
As long as they are immersion cooled the miners will probably be fine IF the PSU's are:a) programmableb) able to be ran in n+1 (parallel) configuration or at a minimum the hash boards are individually powered ie 1 board, 1 PSU.If they are air cooled - terrible idea!

### Reply 5:
I know the operation with two power supplies from the server area, there it was called load balancing. Both psu run at half power and are thus spared. If one power supply fails, the second is still in operation.which process generates more TH/s in this operation? Is it generally because more current flows and is available or because the load of one psu is distributed over two and thus more efficiency is generated?

### Reply 6:
Is it to be understood that with immersion cooling the overclocking draws more current up to a certain point. At some point the psu reaches its limits, if I want to overclock beyond that I need more psu to ensure the greater power requirements? With this method, would using the braiinsOS+ when the S19 release happens make overclocking even more efficient? Will overclocking and braiinsOS+ work together in immersion cooling systems?

","[
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  },
  {
    ""hardware_name"": ""5000 watt PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
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21401,"Date: 2017-05
Topic: Bitcoin Mining - Beginner
### Original post:
Hey guys....new to mining and have done a ton of research but i have some questions.I was thinking of buying a Antminer R4 to start with and a bitmain APW5 PSU, 1300W-2600W power supply....Is that good to start with?With that, do i basically buy the miner and power supply then hook a monitor up to the R4 connect to a pool and start mining? Also, with the R4, does that mean i can ONLY mine Bitcoin and not others like Facton, Feathercoin, etc?Thanks for your help!

### Reply 1:
Hi millz90. Yes, the R4 indeed is the most efficient homeminer. But they are quite faulty and lot of users complains about their reliability (you should count with some risk) Also Bitmain is sold out at the moment so try to search in forum board: Marketplace > Goods > Computer hardware. No monitor, the miner has ethernet connector. Check some youtube tutorials for installation.And pay the el. bill.Seems you haven't done a ton of search as you said.With R4 you can mine any SHA256 coin (BTC,NMC,PPC...). Feathercoin is NEOSCRYPT and can be mined with GPU (check <link> for other popular coins and their algorithms)You're welcome and good luck

### Reply 2:
Yes I like mining. Bitcoin R Best Currency

### Reply 3:
Hi everyone, I'm a bit new to the whole bitcoin mining thing so I was wondering if someone could explain to me the gist of it. A friend of mine tried to explain the whole concept of how people have to use very powerful computers to verify certain transactions or blocks or something and how this is sort of like a mathematical puzzle that is very difficult to solve, and how when someone solves it they get bitcoins for it. However, my question is where do those bitcoins they get even come from? Is money just made from thin air?

### Reply 4:
Mining is a little complicated to explain but essentially you have machines brute-forcing hashes (since they are one-way only) to receive a reward. This is PoW and the difficulty of doing so is dependent on the network and adjusts accordingly. The bitcoins that are sent to the miner that succeeds in hashing a value lower than the target (refer to the Bitcoin Dev. Guide) consist of the mining reward (right now at 12.5 BTC) and the transaction fees in their chosen block. This is why paying a higher fee/byte ratio will get your transaction confirmed faster since miners will want to earn the highest amount for their work.Check out this link for more information, because it's a pretty interesting read: <link>

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20764,"Date: 2015-11
Topic: 0 GH/s 00000-000000-000000-00000 S5
### Original post:
wtf just hw errors tried everythingdifferent controller board different cabelsdifferent freqI don't know what could be the problem....I could try differnt pool,once had an s1 that did the same but only on nicehash.

### Reply 1:
Obvious questions...1. Latest firmware?2. Pool information correct?3. Tried a reboot?

### Reply 2:
just updated first post

### Reply 3:
What kind of PSU are you using? Are you using all 4 PCIe cables to power it up as well? Is this a new(used) unit to you or did this just start happening?Also, do you have pools defined on MRR? You need to have a pool defined in the webui there otherwise your miner won't hash through them. I don't know if it would fail over to your third pool, kano.is, because I haven't tried that.

### Reply 4:
this is one of the last of 20 s5's tested same psu (lepa 1600) and configso there should be no problem from those things

### Reply 5:
Pool info seem to be correct, since they read as alive. You could still try different pools but anyways;Swap one board into a working S5. If it still read dead, then test with the other board to be certain but it sound like it could be possible that both board are dead.

### Reply 6:
swapped psu's now somthing <truncated> hw and no hashrateguess I will add them to the pile of dead boards

### Reply 7:
Have you checked your pool's settings, make sure that it actually works? Also, the boards might actually not be dead, just run power tests on each side of them. I wonder how both could break, possibly a power surge? This whole situation seems quite queer to be honest. Are you sure of your vendor who sold you that miner?

### Reply 8:
If they are really dead then i guess thats too bad. At least you can get something back for dead S5 boards. Just wondering if those are actually dead. Let me know if you need to know what to do with your dead boards.

### Reply 9:
Mine, they are all mine I've offered what I believe is a fair price for the dead boards.

### Reply 10:
It is a symptom of a damaged hashing board. A huge number of errors and string 0X. Of course, the speed of either 0 or half the nominal speed suggest damage both or one board.

","[
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    ""hardware_name"": ""S1"",
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  },
  {
    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""lepa 1600"",
    ""hardware_is_owned"": true
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23177,"Date: 2020-01
Topic: Hooking up Antminer S3 to 750 watt power supply
### Original post:
Hello. I am trying to hook up my Antminer S3 to an HP 750 watt power supply but something is wrong....Here is the power supply: <link> may not be hooking it up correctly... There are only 4 power slots but the PSU has 8.... They are numbered P1-P8.The Antminer powers on and the fan is running very slowly. Ethernet lights are blinking and both the red and green lights are illuminated.When I try to go to the 192.168.1.99 it says page cannot be displayed. I didn't have any problems with the S9.Any help you can provide would be appreciated. Thank you.Here are some images:<link> am thinking I may have a larger issue... I tried another PSU and same thing. And the Antminer is not showing up on the ip search, and 192.168.1.99 is not found....Any ideas? I reset it, but even though when I depress the button is does not seem to do anything except turn off the ethernet lights. Red and Green remain illuminated.

### Reply 1:
Did you own it previously or someone else did? Maybe it's configured for static IP allocation, not uncommon specially if someone owned many and wanted to keep track of each.Keep trying the factory reset so you can start from scratch. I believe that's what i did with the ones i bought online. It's also quite possible your miner is bad. This is how one of mine died.

### Reply 2:
According to a quick google search this was found on bitmains website:-""After powering on the miner for 2 minutes, please press ""Reset"" button for 5 seconds, then release it. The miner will be restored factory settings within 4 minutes and automatically restart (no need to power off the miner).""Also I assume your network IP range is set to 192.168.1.** and not 192.168.0.** ?? I had to change mine to find a second hand miner I purchased so I could log in and change the network settings in the miner over to my default network IP range.

### Reply 3:
Thanks. Yes, it was purchased from eBay. Ill keep trying. Thank you.

### Reply 4:
With the S3 you should press and hold the reset button for 10 seconds then wait 3 min for the software to reset then re-boot the miner.As said above this should re-set you back to the main window and default the IP back to standard. You may wish to try hook the miner to your laptop or PC and manually set the IPhere is the step by step process to configure your AntMiner.Code:Start Button > Control Panel > Network and Internet (View network status and tasks) >> Change adapter setting (Left side of the screen) >> Local Area Connection (Double Click) >> Internet Protocol Version 4 (TCP/IPv4) then Click on Properties >> Select Use the following IP address:Your S3 has a factory default IP address of :192.168.1.99 and the Netmask of 255.255.255.0 and the Gateway 192.168.1.1Set your computer's IP address to the following:IP Address: <truncated> <truncated> Gateway: 192.168.1.1For the DNS Setting: Select Obtain DNS server address automaticallyIf you still cannot find it on the network then the miner may have other issues.One issues with the S3 miners if the mosfet driver not kicking in this will stop the board starting up when you turn on the S3 miner listen to it carefully you should here <rest of post truncated>

### Reply 5:
If the ""Obtain DNS server address automatically"" is greyed out is if you have selected a STATIC IP ADDRESS, in other words you have selected NOT to use ""Obtain an IP address automatically"".If you do this and select a Static IP Address, you are electing not to have your IP address for your computer assigned by the DHCP in your router/gateway. Hope this helps!

### Reply 6:
You tried a different PSU, I assume you know the new psu is good right? in that case we can ignore the possibility of the PSU causing the issue, now you have two things to deal with.1-A dead miner/control board , you can't do anything about it (sadly).2-A network related issue, try a different Ethernet cable and then follow this topic If your miner is not showing on the network > here is what you doing wrong.post your results here so others can assist you better.

### Reply 7:
I was able to do everything except change the DNS setting. ""Obtain DNS server address automatically"" is grayed out.When I power up the miner, the fans kick on and it is very quiet. The red and green lights are both on constantly as well as the yellow ethernet light. The green ethernet light flickers. I know from the S9 that the red and green miner status lights should not be solid as these are. Could that be the problem?Yes, we have electric heat and I wanted to use this quiet miner for a heat source this winter.Thank you. Yes, I tried 2 different PSU's. I even used the PSU from my S9 (only 4 cables) in 110v and I know that works.Ill admit my network skills are not that vast. I will certainly read up on the thread you posted, thank you. I had no issues whatsoever on my 2 S9's and 1 V9.

### Reply 8:
I think this unit is defective. I received another one and th<rest of thread truncated>
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  {
    ""hardware_name"": ""Antminer S9"",
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  },
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    ""hardware_name"": ""second hand miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop or PC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Ethernet cable"",
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  },
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    ""hardware_name"": ""V9"",
    ""hardware_is_owned"": true
  }
]"
21617,"Date: 2017-10
Topic: Setting up a pool, need help [Linux]
### Original post:
Just a guess of some possibilities:Your index file is not at the root path.Nginx doesn't have sufficient rights to access the file.The index file itself contains any kind of redirects.

### Reply 1:
it was Nginx doesn't have sufficient rights to access the file, I fixed that now I am still having issues with ""Stats API Temporarily DownUsually it's just a temporal issue and mining is not affected.""If anyone knows please help.

",[]
16245,"Date: 2022-04
Topic: Bitcoin mining
### Original post:
Hello, first time searching for this type of info, so i'm sorry if it's offtopic (I just don't know any other place to go). My goal is to make an ASIC, i got as far as understanding how basic computers work (adding binery numbers, boolean algebra, how RAM works), also have a basic understanding of process of hashing (we take a float value -> turn it into random stuff), i also know how to make chips (photolithography). But i need to go deeper and unfortunatelly i am lost for now, so that's why i seek for help:The easy ones:1) Is this even right place to ask such questions?2) Where is the right place to ask such questions?Harder:3) Any literature regarding 3.1) Bitcoin asics in generl (history, modern technology)3.2) Complicated functions of processors 3.3) How sha256 works indepths 3.4) How ASIC receives jobs 3.5) How mining pools work3.6) How USB miners work3.7) Infrostructure of ASIC chips3.8.) How to design an ASIC chip Thanks for all replies and sorry for my english.

### Reply 1:
I'm not sure anyone here has experience in designing and making chips it's dominated by only a few companies. My answers below are my best guesses based on what I think will be a useful starting point. I don't think you'll get a good profitibility out of chips if you're just doing this hobbyistically - there's quite a bit of competition in this space imo and they probably have to compete quite well with each other already (some have stopped producing entirely too). Kinda but you might want to ask it on more forums too or in communities where chips are designed. The sha256 algorithm is the main function asic chips implement as weel as (probably) a comparison to check if the header is below the target - operations are normally done in parallel as much as possible afaik to increase the speed a block is found (this might be less necessary though as series processing over the same amount of time will produce a similar number of outputs for ~10 minute intervals). Pools send jobs to computer workers that mine the blocks based on the information the pools give them. These ""workers"" are pieces of software on a ""normal"" machine (ie one running Windows or Linux with the asics connected as per<rest of post truncated>

### Reply 2:
Is you goal to manufacture an ASIC or just design one? Either way, if you have only a rudimentary understanding of everything, then this is not something that you can accomplish in your spare time over the summer.

### Reply 3:
Designing a new ASIC chip, let alone an ASIC miner, will take a team of <truncated> engineers. I'm thinking at least 5 people in total. It will cost you hundreds of thousands at the lowest.If you want to build something new for mining, why not write GPU mining software for a new coin or for a CPU coin? Or a stratum profit-switching proxy? There are so many ideas that you can bring quicker to market by yourself, as long as you know programming.

### Reply 4:
From the discussions about the new intel miner & chips it was in the 8+ figure USD range. So at least $10 million from conception to prototype.And that is from a company that HAD the staff and knowledge on how to do it.Would be interesting to know what it cost some of the original makers of miners in the 2011-12 time-frame vs today.-Dave

### Reply 5:
According to this source, Butterfly Labs sold pre-orders for 60k units at first. I vaguely remember that the average price of the 50 Gh model was $500 or so. That comes out to $30m of funding in total. However, many of these funds went to Butterfly's own warehouse in Missouri. They later failed to pay the power company, then folded in 2013 or so for whatever reason.

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    ""hardware_name"": ""normal machine"",
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21899,"Date: 2017-12
Topic: Avalonminer 741 x 2
### Original post:
Hello,I can't get my miners to power on.Modules InformationAlive Modules: 0Temperature: -- | Fan: --Do I have to do the paper clip trick? If so, is there a diy with images somewhere?-Bits

### Reply 1:
Hey there, We need a little more info, what psu's are you using What circuit voltage are you running on?Are they powered up and showing lights?Have you double checked all connections?

### Reply 2:
Yeah the paper clip trick worked.

### Reply 3:
nice always good when it's something easy.

","[
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]"
14062,"Date: 2011-05
Topic: SDK NOT important
### Original post:
Hello.I've made few researches. (damn, sorry for misspellings but little drunk...) People here on forum are telling, that one some SDK U'll get better results, on others worse. Its TRUE. BUT, power, consuming by card will also increase, same temperature.Been doing 380Mhash/s on 2.2 SDK or 2.4 SDK. Changed to 2.1 SDK and 395 MHash/s. But also was using 15 W more, as well as 5C more with 100% fan (74C @ 75%fan vs 79C @ 100%)(same clocks). After calculating additional profit from hashes - additional cost of power = the same. The adventage is lower temps on card, which means it will last longer.

### Reply 1:
MTBF is ~50 000 hours, if you expect to mine with your card for more than 5 years....then use SDK 2.4 ...

### Reply 2:
Or use different (phtak) kernel, which is optimized for 2.4 SDK. The same speed as unoptimized on 2.1 SDK. Plus, I experienced frequent freezes on 2.1 SDK, while 2.4 seems much more stable.

","[
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8960,"Date: 2015-03
Topic: Low power chips WANTED!!! 0.3 W/Ghs or around. Ideal miner design for exchange
### Original post:
As most of you understand, only low power chips will work this winter and only those who have such chips will do profits in near future.I would like offer a best ever miner design in exchange for such chip. What I mean of 'ideal miner'. Manufacturing costs for miner will be only around 1/5 of overall price. 4/5 of price will be net cost of chips.Miner will run at high voltage with great efficiency ~95%.Miner can work with nearly any chips, but I'm searching for best chip ever.I have prototypes for different current chip manufacturers, so I can provide proof if needed. Also I have a farm for personal use that employ such technology.PM me if you have great chips to offer, only with working samples.

### Reply 1:
Good luck with your venture, but I'd imagine that a company with engineers smart enough to make a chip with this level of performance would also have worked out a design for a cost efficient system. Your pricing ratio presumably doesn't include the costs of PSU's?

### Reply 2:
no one will give or share a working prototype of a .3 watt chip.If I had some in hand I could sell them for 1,000,000 usd Frankly the .3 watt chip may be like unobtainium. The rarest of all elements a little humor for a sat afternoon. As of today no one has shown that they have a .5 watt chip maybe the sp30.1 from spondoolies can do it maybe not.

### Reply 3:
You are little bit wrong about smart engineers. It is like producing devices and hosting devices. Sounds similar, but in fact completely different business.I ""sell"" design for cheap. Many times cheaper then develop it, because I have it already.Yes, my pricing ratio includes PSU!!!!

### Reply 4:
My current, not so good 40nm chips run @.63 wattMaybe you are right, maybe not.

### Reply 5:
has anyone tried undervolting bitfury Rev1 or Rev2 chips to their minimum voltage range? its like 0.5V for R.2 and 0.6V for R.1i might just do that with a nanofury if i can find a drop in replacement for the vreg

### Reply 6:
Thanks to legkodymov.S5 was based on legkodymov's serial power design, and its power consumption at wall is 0.51W/G.S2-replace PCB will be released after Chinese Spring Festival, and it will be serial powered too, and its power consumpiton at wall will be less than 0.4W/G.

### Reply 7:
S2-replace PCB will be released after Chinese Spring Festival, and it will be serial powered too, and its power consumpiton at wall will be less than 0.4W/G.Finally great news!!!!!!!!!!

### Reply 8:
Interesting (and slightly confusing due to poor translation) news from Bitmain in an ancient and forgotten thread.More interesting is the fact that the OP wasn't a total crackpot... as anyone who had read the thread in the past surely thought.

### Reply 9:
So, it wasn't based on the OneString or those Yaizo (sp?) boards or the Prisma or a couple other string designs that had come out several months or a year earlier? I don't know of anything the S5 does that's truly novel design.

### Reply 10:
!!!!! thank-you

### Reply 11:
YEEAAHHH!!!God save BITMAIN!

### Reply 12:
what is the price and the content update?

### Reply 13:
Will these be sold like the S2 kits; or as boards only requiring existing blade heatsinks / S2 backplane & controller?

### Reply 14:
Good job, legkodymov...and <truncated>

### Reply 15:
Awesome stuff..Now on a totally different note..Seriously, how many freaking festivals/Holidays do the chinese people have!? - and every time, they seem to shut Down the entire country for a week.

### Reply 16:
This one is THE ONE. And the entire country is shut down for ~2 weeks effectively that time.The other festival is the ""golden week"" somewhere in October, which is roughly a week.

### Reply 17:
so s6 is in the testingif the price is right, i might upgrade an s2 or 2

### Reply 18:
S6 yeah!

### Reply 19:
I think the real question is...will they be cost effective? The S1 -> S3 kits were not worth the cost.

### Reply 20:
i hope for, but i know i'm a bit delusional:c1 waterblocks <truncated> to use several psu's, meaning power connectors only on blades&controller board

### Reply 21:
Or use good PSUs which can load-balance.Also, I wonder if Bitmain intends to do any more talking about their off-the-cuff comment in this currently very-off-topic thread, or if they'll start a new one for the actual announcement.

### Reply 22:
Is it the Chinese April Fool's too? I'm doubtful we'll hear much until after their Holiday, at which time they'll probably make a big post and add the product to their website in their typical fashion. But, it's not the first time we've been promised such things as upgrade kits for S2's, and if their S1 upgrade path was any indication, it may not even be economically feasible. Lately they've been tending to miss the boat on launch prices..

### Reply 23:
I don't see any mention of an S6, just an S2 to S5 upgrade kit.They do it better than <rest of thread truncated>
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    ""hardware_name"": "".5 watt chip"",
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    ""hardware_name"": ""nanofury"",
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    ""hardware_name"": ""S5"",
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    ""hardware_name"": ""S2-replace PCB"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""OneString"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Yaizo boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Prisma"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S2 kits"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S6"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S1 -> S3 kits"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""c1 waterblocks"",
    ""hardware_is_owned"": false
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]"
8865,"Date: 2015-02
Topic: Block Erupter Controller
### Original post:
There are 3 inputs for the white cables.I know I can run one miner with the input closest to the ethernet.Will one BE controller host more than one miner? (not referring to daisy chain here)

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    ""hardware_name"": ""Block Erupter Controller"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
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]"
23103,"Date: 2019-10
Topic: S9 Hashboard Test Fixture
### Original post:
Ive massed four piles of cards. Ones that have passed, ones that have zero asic, ones that stop at a particular asic, and ones that read zero global temp and can not open core? Does anyone know how to fix the zero asic and no core piles?

### Reply 1:
Fixing S9 hash boards is not something that someone can tell you how to do from scratch, it's a long process , unless you have a certain a problem or stuck in one specific part then your question will go unanswered.For the board shows only a given number of asics, it indicates that one or more chips have gone bad and must be changed, for that, you need to follow the process which is not simple and in many cases you better of just throwing away that board, follow this topic ><link> put a link to a YouTube video there, make sure you watch it to get a better understanding, and if you are not good in dealing with electronics, your chances are slim to nothing.As for the boards that show 0 asics, in many cases it could be a firmware related issue and can easily go away by flashing a different firmware , that one I had the most luck was this <truncated> can read more about it here > <link> , a board that shows 0 asics could be due to one of the following reasons.1- A failling PSU2- Bad data cable (hash board to controller)so make sure you test those as well.

### Reply 2:
It need experienced.. i have attended the repair course and i appreciate more to those technician after that class.. Sometimes the tester show certain ASIC malfunction, it is not that ASIC problem, but dry join for a resistor.Enjoy

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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""data cable"",
    ""hardware_is_owned"": false
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]"
9387,"Date: 2015-10
Topic: Spondolies SP50 to INDIA...
### Original post:
hey guys can anyone calculate the price for it in INDIa ? i mean if anyone experienced in this field...the miners price is round 100 coins i guess ....any details is appreciated thanks

### Reply 1:
? what do u mean .

### Reply 2:
We don't have any more information than you do, contact Spondoolies.

### Reply 3:
it seems they scammed u ? gratss on ur legendary promotion by the way.

### Reply 4:
While dogie was overly terse, I don't think that Spondoolies has announced a ship date or price for the 110TH SP50. As far as I know, the 100 BTC ""price"" is pure speculation at this time. You should probably follow this thread:<link>

### Reply 5:
It's pretty much showing off so far. And we are taking them at their word on it as we have not seen a working unit just pictures of the design.A lot we don't know and most likely will not know for a while.

### Reply 6:
whut do u mean ? like in a month ?

### Reply 7:
We won't have any more information for another week, give or take a year.What is so difficult to understand, they haven't released anything but preliminary specs and a picture? Follow their thread and you will know more just as when we do...

### Reply 8:
To answer your three questions: No, no and none.

","[
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    ""hardware_name"": ""Spondolies SP50"",
    ""hardware_is_owned"": false
  }
]"
13845,"Date: 2023-09
Topic: Is there any working CPU/GPU solo mining software still available for learning?
### Original post:
Is there any working CPU/GPU BTC solo mining open source software still available for learning purpose?Preferably in CAny help appreciated.

### Reply 1:
No.... and you wont learn anything using it.You're pretty much saying, I want to learn about mining for gold by picking apples at an apple orchard.

### Reply 2:
Thanks kano, you're the only remaining active developer of cgminer I assume. you did a great job.I've used cgminer a long time ago for that purpose but now I think everything has been changed. So I need a working example in order to achieve my goal.

### Reply 3:
Yup! Poolers cpuminer compiles on recent machines and has optimizations for various CPU architectures. Give it a try, I found the C source very informative. <link> solo mine youll need to point it at a stratum server configured for solo mining. Public-pool is a good option; <link> but there are several others too!

### Reply 4:
Thanks skot. will give it a shot.I have some question/ideas will ask you in your topic.

### Reply 5:
Why not share your thoughts here what exactly do you want to achieve?We can maybe give you some idea of what you want to achieve.I don't know if GPU/CPU still works on mining BTC but why not buy a USB stick miner Compact F or 2pac for your project?If you are interested check this thread below- <link>

### Reply 6:
I like to see how connections are made to a pool and get header info in btc version 25, how merkle root replaced and calculated after 4GH nonce reached or how extranonce come to sense and also middle state involved in live action. those boards use bitmain asics and I'm not sure something like midstate could be included in asics, or a way to manipulate sha256 calculations in asics.

### Reply 7:
You should check out the nerdminer source; <link>

### Reply 8:
Oh, also for learning, nightminer is excellent; <link>

### Reply 9:
Thanks skot

### Reply 10:
I think bfgminer[1] is exactly what you're looking for. It actually still works[2], where i've already tested it on testnet with both CPU and GPU[3].[1] <link> <link> <link>

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    ""hardware_name"": ""cpuminer"",
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  },
  {
    ""hardware_name"": ""USB stick miner Compact F"",
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  },
  {
    ""hardware_name"": ""2pac"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""boards use bitmain asics"",
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  {
    ""hardware_name"": ""CPU and GPU"",
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11423,"Date: 2011-06
Topic: Win7 Enterprise x64 ..mining tools?
### Original post:
also will I need dummy plugs?Please help me Upped the Ante to 2.5 BTC

","[
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    ""hardware_name"": ""Win7 Enterprise x64"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""dummy plugs"",
    ""hardware_is_owned"": false
  }
]"
22184,"Date: 2018-01
Topic: S9 First ever boot up question
### Original post:
I AM USING APW3++So the paper that bitmain sent with the S9 says to power the 3 hash boards first and then plug in the controller or whatever its called. All videos Ive watched everybody always plugs in all 10 right away. Whats going on? Which do I do? Also future power ups and downs what do I do? Any advice would be helpful. I apologize for my newness. Thank you .

### Reply 1:
Feel free to plug everything at once, meaning plug all cables from PSU(i hope so you are using 1600w and only ONE PSU). Plug all cables from PSU to hashboards and controler, plug Ethernet cable, and then plug PSU into wall. There won't be any problems. Depending from the batch MAYBE you have blank OS, you can search topic here on forum. Wait 10-20 minutes. Use program called ""Advanced IP Scanner"" login with root/root. And you will see all the data. If you can't see ""Miner Status"" page. Then you have the problem i have mentioned.

### Reply 2:
I forgot to mention Im using a APW3++ what about future intentional shutdowns? For example in a month or two Im moving. Once shut down just simply rinse and repeat what you said?

### Reply 3:
Yes, no more, no less, you won't have any problems.

### Reply 4:
Thank you.

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  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1600w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Ethernet cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Advanced IP Scanner"",
    ""hardware_is_owned"": false
  }
]"
20376,"Date: 2015-04
Topic: Mining Proxy?
### Original post:
Is there any software out there that I can set-up on a remote server and point miners to that will then point to another pool? Basically creating a sub-pool which I can point where ever I want. It would also need to let me grab the total number of shares submitted (per user), so I can drop that info into a database.I would set-up my own pool but I can't afford to rent a server with that much processing power, just something that can handle seeing the data and forwarding it (at least I'm thinking running a proxy would be lighter weight). Also looking for it to support SHA, Scrypt and X11.

### Reply 1:
It wouldn't have all the features you want (number of shares submitted) but you could set something like this up with MiningRigRentals. Sign up, and input your pool mining information, then point your miners to the MRR proxy. It's easy to change pool credentials on Mining Rig Rentals afterwards at any time.Usually MRR is used for miners to rent their hashpower out to others, which often pays more than mining bitcoins directly. However if for some reason you didn't want to rent your hashpower out (I don't see why you wouldn't want to though) then you could just set a high renting price. IIRC Mining Rig Rentals supports all three of those algorithms too, so it would be a start to a solution for you.

### Reply 2:
Yeah, I'm looking to run a sub-pool, so it would be other people connecting too; not just me. They would need their own username/workers and what not, so I can track their contribution to the pool. I would then point everything to another pool, to do the actual mining. It's a new website I'm working on, that I don't want to give to many details about, as of right now. It's a different kind of pool, I'll just leave it at that. Found this; but of course it's in Python which I don't know too well.<link> seems I could modify the last couple lines of stratum_listener.py and the _on_submit method in getwork_listener.py to add a database submission, but not entirely sure. It seems like the last few lines of jobs.py might also be of interest for a database submission; I really don't know. It also doesn't support X11.

### Reply 3:
yeah there are two, stratum slush pool proxy and this(the first is only for sha, the latter support many other algo)<link> used both on many vps with splitting workers and it work like a charm

### Reply 4:
That looks decent; cleaner and better than what I found. Not sure by looking at it though if it'll log the actual amount of shares submitted per worker. I see hashrate but not shares submitted.

### Reply 5:
the java one should tells you ""yeah"" for every share it submit, and this for every worker, if you can't see this, then it isn't workingtoo bad i'm not using it anymore i or i could post some screen

### Reply 6:
You might look at some of the mining rental sites. I believe beta rigs you can set miners for rent and have pools set on the site for when they are not rented.So when not being rented you can pick pool on a website from anywhere with a internet connection.

### Reply 7:
Use CKproxy!You will thank CK soon if you do <link>

### Reply 8:
Doesn't support X11 or Scrypt as far as I know.You missed my second post.Looked through the code some more. It doesn't do what I need it to. So ultimately there is nothing out there does what I need. So I give up.

### Reply 9:
I did miss that somehow. I have not seen anyone release code to do what your wanting and I doubt you can get something this advanced for free.Likely it would take some cash to pay someone to develop it. It sounds like a multipool is closest thing to it. People point to it and you aim their hash where you want.

### Reply 10:
Except the whole point of the site is a <truncated> site for a feature film I'm working, so I have no money.I think I'm out of the BTC/AltCoin game entirely; total waste of time.

### Reply 11:
Ahh ok now I understand your goal better. As far as crowdfunding I doubt it is a viable option. Miners spend lot's of money on their gear and to keep it running. It's not really a charity or something you will get many behind.Ultimate goal is ROI for miners. I doubt you will find many to use hash to pay for your film.

### Reply 12:
Not always though. I see people around here that say they don't care about making profit ""but want to support the network"". A crowdhashing website would help somebody raise funds and still assist in securing the network. And I wouldn't necessarily be asking people to point at the sub-pool/proxy 24/7 but maybe little bursts of 15 minutes here and 15 minutes there; which would still be beneficial to the project if it was pointing all the miners at a PPLNS payout pool, or even pointing to West/Nice Hash. If collectively through a bunch of different people pointing to the proxy for a little bit of time each day, that could maintain 1-20TH/s of constant speed (say spread across 100 people) throughout the day. Which is significan<rest of thread truncated>
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    ""hardware_name"": ""server"",
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  },
  {
    ""hardware_name"": ""Mining Rig Rentals"",
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    ""hardware_name"": ""vps"",
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23693,"Date: 2021-09
Topic: X17 Mystery Chip
### Original post:
I've been searching high and low for any clues on this mystery SXE chip by the boost circuit. Could anyone provide a clue what it is and if you can obtain it online. If so, where I could start to look. Or if anyone is selling a few of their personal stash of these I'd love to take a few off your hands.<link>

### Reply 1:
Not sure what you mean by the 'boost circuit'Asicboost is a modification of the internal ASIC hashing function to produce more nonces.Thus it's simply part of the internals of the BM1397 i.e. a change in the silicon design of the BM1397 vs pre S9 chips.

### Reply 2:
Hi Kano, This chip is located below the ""boost circuit"" zone according to the manual (image beow). I'm now leaning towards some type of linear regualtor but still guessing at this point. <link>

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11610,"Date: 2011-09
Topic: Modified Phoenix miner with rollntime support
### Original post:
Hey buddy,Using it to mine <truncated> sudo python phoenix.py -u <link> DEVICE=1 -k phatk PLATFORM=1 BFI_INT VECTORS AGGRESSION=12 <truncated> 10:15:59] Phoenix Miner (aldiyen mod) v1.6.2 <truncated> 10:15:59] Connected to server[337.19 Mhash/sec] [0 Accepted] [0 Rejected] [RPC]Your version is about 4 mil hashes faster and everything seems to be ok.Thanks !

### Reply 1:
cool, glad to hear it. it probably won't perform any differently unless you're mining at a pool, but it's still helpful to know that it's not doing anything weird when you're not connected to something that supports updating the work time. thanks!

### Reply 2:
I just installed your version on my 2x5830 machine and am testing it now against Bitp.it. I'm going to let it run overnight and let you know the results as soon as I get the chance. I usually average about 1-2% rejections from this pool over a 24hr period. So far, no issues and everything seems to be running smoothly. Will keep you posted.

### Reply 3:
Ditto. I just started running it against bitcoins.lc. I usually get about 0.3% stales so there's not a lot to improve on, but I guess every share counts How do I know if a pool supports rollntime?Edit: So far so good. ""Grand Total : [1088.90 MHash/sec] [551 Accepted] [0 Rejected] [0% Rejected]""Edit2: Still going strong. ""Grand Total : [1088.68 MHash/sec] [3035 Accepted] [0 Rejected] [0% Rejected]""Edit3: I'm impressed. ""Grand Total : [1088.82 MHash/sec] [9490 Accepted] [0 Rejected] [0% Rejected]""

### Reply 4:
Some pools have mentioned that they support it here in the forums, and some may list it as a feature on their sites, but in general I don't think it's well documented. I haven't added any output to explicitly indicate that the server supports rollntime, but if you run with the -v (verbose) flag, you will see when the miner gets new work, which should be a pretty good indicator. The normal phoenix gets work 2-3 times per minute on my system, at 410MH/sec, whereas this version will get work once every 4 minutes(on servers that support rollntime) unless the server explicitly specifies a work expiration (for instance, Eligius sets expiration to 120 seconds).Anyway, I'm glad to hear that it's working well so far! Some time, perhaps later this week, I'm planning to add some functionality for the software to try re-submitting work that fails due to communication errors / timeouts; currently any such work is treated as a reject and discarded. After that I may add some other little tweaks to make the software a little bit friendlier. I'll update this thread as soon as I add any new features.

### Reply 5:
Ok, so the results are in:[300 Mh/s] [4456 Accepted] [1 Rejected] = 0.02% Rejected[290 Mh/s] [4420 Accepted] [0 Rejected] = 0.00% RejectedI have to say... awesome job!

### Reply 6:
why every link is launching two phoenix.exe process?

### Reply 7:
I assume you mean when you run the phoenix.exe it spawns two processes called ""phoenix.exe""? something to do with the way the software I used to convert the python to a windows .exe operates, from the look of it. one of them is using 0% CPU and only 1MB of memory, so I can't imagine it's doing much of anything. perhaps it's needed to spawn the main process

### Reply 8:
Here's an explanation of why it spawns two phoenix.exe processes when you run the exe:<link> I've uploaded a newer version with some refinements and enhancements. See the original posts for details.-aldiyen

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9818,"Date: 2016-05
Topic: Noisy RM850 on a S5
### Original post:
I have a S5 on a RM850. First the fan does not spin. And second it make a electric buzzing which is pretty annoying. It sound like an electric clipper, albeit with a lower dB.Is this normal? Also at 393hz i estimate the draw DC to be over 600W. I would have thought the fan would spin.

### Reply 1:
the rm850 has some issues let me find a link<link> above^Here's my two cents... the original RM850 still gets way too much hate from these people. One little design flaw so minor that it affected exactly zero consumers, and suddenly Corsair is the devil to some and now the RM series is crap not worth buying. Granted, some of these people are still reasonable, not holding the company as a whole to the torch just because the RM or the CX series turned out to be below their personal standards of awesomeness. But for every one of the reasonable people, there's another one coming out of the woodwork with nonsense like, ""oh, I'll never buy a Corsair again because the CX750M shuts down above 30 degrees and only crap units do that.""the original ""bad"" rm850 vv<link>

### Reply 2:
This was a refurbished unit (from Newegg) for 50$ so i jumped on it. But if you're saying all the RM850 are like that... But no one in the reviews mention this noise, that i can see.

### Reply 3:
they do mention that the older rm850 did not turn the fan on fast enough and units burned.

### Reply 4:
I see. I was wrong though, the fan didnt spin at 350mhz. When i raised to 393hz it actually started spinning but its very slow and not really something nice for ambiant mining condition. Anything about the noise being normal? I was thinking of using the RM850 for a secondary PC, i'm only using it for a S5 temporarily, while i get a PSU RMA. But there is no way i want a ""silent PSU"" make a clipper noise in my backup PC.

### Reply 5:
That PSU is a P.O.S. I have one just like that,I have a new fan to solder to the wiring since there is no plug to pull to swap the fan Not sure if it will work even then,I think there is a fan control board,it may be bad...not sure <truncated> forward to you solving this

### Reply 6:
You sure its not coil whine? Some PSUs with some miners or GPUs having bad coil whine.

### Reply 7:
Well it does the noise even before the miner start mining, at minimal load. And it shut down itself after a few hours, now.

### Reply 8:
can you return it ?

### Reply 9:
On newegg getting a replacement is really easy on RMA in most cases. Not sure how easy it will be to get a flat return though.

### Reply 10:
Yes. I have to it seem.It was refurbished so i'm not quite sure what they will send back but i hope i have some kind of revision with the RM850 fixed, otherwise i won't be able to mine much with it heh.

### Reply 11:
I guess we'll see what they send me back...

### Reply 12:
you may get a refund it should tell you in the RMA or return policy, most refurbished stuff is refunded from new egg at least for me it has been refunded back, no replacement. i have two of those PSU, i got really good deals on a while back off Amazon Warehouse, Ive had mine for all most two years now with no issues. my two came out right after the bad ones did so i was luckily i guess .!!!

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    ""hardware_name"": ""RM850"",
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    ""hardware_name"": ""CX750M"",
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23629,"Date: 2021-07
Topic: Antminer s19 pro hashboard seems to be faulty
### Original post:
Hello everyone,I purchased the Antminer s19 pro last week and it arrived 2 days ago.when I start it up, it looks like 1 of the hash boards doesn't work well.These are the lines from the log of the miner that are related to this issue:2021-07-09 06:56:47 Chain[0]: find 114 asic, times 02021-07-09 06:56:54 Chain[1]: find 109 asic, times 02021-07-09 06:57:03 Chain[1]: find 109 asic, times 12021-07-09 06:57:11 Chain[1]: find 109 asic, times 22021-07-09 06:57:12 Chain 1 only find 109 asic, will power off hash board 12021-07-09 06:57:20 Chain[2]: find 114 asic, times 0In addition, I see that only 2 hash boards out of the 3, are mining.The mining value is 72 TH/s where it should be 110 TH/sPlease also see screenshots from the Miner's Dashboard:<link> someone please advise how to fix this issue?ThanksShai

### Reply 1:
.Return it for warranty service. The chips are not soldered properly.

### Reply 2:
Try some basic things first before you send it back for a service warranty.Try to reset it to factory default by holding the reset/IPreport button for 15 seconds and try to run it again. If not flash the firmware with the latest version available from Bitmain here <link> nothing works then your last hope is to send back to Bitmain.

### Reply 3:
I tried in 2 different ways, the one you suggested, and there is also a possibility to do a factory reset via the web page of the miner.Anyway it didn't change the results. the second hashboard is still offline.I updated the firmware, but it looks like I already had a later version. The firmware version that came installed in the miner was from April 10th 2021, and now after I installed the firmware from bitminer's site, the version is Dec 11th 2020..Anyway the second hashboard is still offline...

### Reply 4:
Code:2021-07-09 06:57:03 Chain[1]: find 109 asic, times 1The signal is interrupted at chip 109, so chances are chip number 110 is bad, it's either toasted or lost contact to the hash board, these asic chips are connected in series, the miner firmware is designed in a way that if it does not see all chips, it simply shut down that hash board.You have two options:1- Follow Phill advice and return it for warranty ( they will probably ask you to ship the whole miner)2- If you do the math and think that wasting a few weeks/months of not mining isn't something you want to do, mine along with 2 hash boards, take out the dead board and send it for repair ( at your expense), of course, all of this depends on your location and budget.On a side but related point, if you could convince Bitmain to send only the dead hash board and not the whole miner, it would be your best option.

### Reply 5:
I have an update:I opened a ticket in bitmain site, and they recommended to flash the SD card.so I flashed the SD card to recover the control board. Since then, not only that the second hashboard is still offline, now the other 2 hashboards that used to work, are in abnormal state and don't work at all... would someone know what to do regarding this issue?<link> addition to that, I opened the lid, and it looked like all the cables and wires were tight. I did try to switch the wires, and now boards 2 and 3 are online, and board 1 is offline.so I guess that's good news.... right? I hope the the problem is with the wires (or PSU) but not the hashboards.But anyway, the 2 boards that are online are in abnormal state, so the miner isn't hashing ....Does anybody know how to get these type of wires?<link> appreciate it if someone could tell me additional things I could try.ThanksShai

### Reply 6:
Email them and say now it is fully bricked.You want a replacement.

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3819,"Date: 2015-01
Topic: [OPEN] BUY S3+ BITMAIN B11 ANTMINER 0.76BTC UK ONLY VAT & TAX PAID
### Original post:
S3+ BITMAIN B11 ANTMINERHello All,Your probably thinking, oh look another scam well your wrong. Rules:1.Orders will be made from <link> in blocks of 6 units or more.2.Payment accepted is Bitcoin. Until my trust rating is higher, I understand if you wish to pay with Transpact (Escrow Service), however please note fees apply and can be found here <link> Transpact Fee: 5.98 Per transaction3.If the order has not reached 6 units I will refund. To avoid refund fees from Transpact payments will be collected 3 working days before ordering.4.If paying via Bitcoin, refund request must be made 3 working days before order date.Refund Fees:Bitcoin = FreeTranspact = (Please see website for further details)5.Refunds will ONLY be made back to the original Bitcoin crypto address the payment was received.6.No private messages will be sent from me, I will also not respond to any private messages. ALL contact is to be made through this thread. I WILL NOT MESSAGE ASKING FOR PAYMENT7.The price is final.8.Orders will be placed every 14 days.9.Delivery is made using Collect+ Tracked and InsuredCost = 14.29 UK Mainland (As of 13th Nov 14) see website for further details. <link>At the buyers expense all def<rest of post truncated>

### Reply 1:
Nice service you are providing here. Maybe if you where doing for the bigger units I might consider some units to buy. If you do something in the future for later group buys feel free to inbox me.

### Reply 2:
How come it's a s3 group buy?

### Reply 3:
Because its from November?

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13439,"Date: 2015-11
Topic: Set up stratum software for solo mining
### Original post:
Hello,I want to setup stratum on my VPS for remote solo mining(not on localhost) Bitcoin and also some altcoin but i cannot find a good pool software, the only stratum software that i found for solo mining is this: <link> i'm not sure if is a good choice because the code is 2 years old

### Reply 1:
You probably would want to use CKProxy. But CKPool should do what your asking as well. Or you could just solo mine to a Bitcoin client like the rest of us, which would use the GBT protocol.Don't know about altcoin mining. You should post the question in the altcoin forum.

### Reply 2:
i cannot use bitcoin client because i'm mining by renting hash power and this will expose rpc username/password to the public

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9476,"Date: 2015-11
Topic: Avalon users: bitcoind + eloipool configuration
### Original post:
Reserved.

### Reply 1:
much appreciated

### Reply 2:
Very nice work!

### Reply 3:
WoW, this is great manual! Thank you!

### Reply 4:
Here is the simple solo mining and mining farm configuration used here. At current difficulty, ignoring variance, an Avalon should, on average, generate a block every...Pool is probably preferable to most, as you might have incredibly bad luck and not generate a block for a couple weeks. In any case, here is the bitcoind + eloipool configuration on Linux.If you like these instructions, there is a donation address in the sig.bitcoind setup1) Obtain a compiled bitcoind somehow. Compiling your own is outside the scope of these instructions. I'm told there is an Ubuntu PPA somewhere.2) Decide on a data directory location. It must be on a fast hard drive, preferably SSD, and have at least 10GB of free space.3) In this directory, create bitcoin.conf text file, with the following <truncated> change the MY_RPC_xxx to a username and password.4) Create a newblock.sh script, with the following <truncated> -USR1 eloipool.pyMark it executeable via ""chmod 0755 newblock.sh""5) Create a run-bitcoind.sh script, with the following <truncated> \ <truncated> -daemon \ <truncated> it executeable via ""chmod 0755 run-bitcoind.sh""You must modify the (a) bitcoind path, (b) -datadir path, and (c) -blocknotif<rest of post truncated>

### Reply 5:
thanks jeff. i'd previously set up eloipool by myself and it wasn't the most straight forward process. this will help a lot of people.i just solo mined my first block with an avalon this morning...it took ~4 days across the diff change. it was a very nerve wracking experience. i'd tested eloipool on testnet and it worked, but wasn't sure if everything was working properly on mainnet. the variance is a killer! i lost a few BTC, but am happy to have a fresh block that I can store away for a rainy day after the diff change, i actually split my hashing power between POT and solo because the variance was killing me (but i'm still a gambler!)...i was literally watching the eloipool log waiting for a block to be solved. (a watched pot never boils).i'm back to pool mining now. don't have the stomach (or hashing power) for solo mining =P

### Reply 6:
BTW, eloipool step 2 was a pain in the ass to figure out. took me a while to realize the code structure had changed. i think I used the json-compat branch though.

### Reply 7:
do you think you can make a image of the install or a vitrual mdonation for the image will be made

### Reply 8:
i second that.

### Reply 9:
I like this a LOT, can't wait to try it out...

### Reply 10:
Yeah... I'll make you an image with no back doors or ways to steal all of your coins...Just use a pool if you can't follow his easy to use step by step instructions.

### Reply 11:
the problem is, many of us don't use linux, ok?i'd trust Jeff to make an image.

### Reply 12:
Dude,If you are not using linux, image will help you a lot but still will be not enough. Just install one for a start and get used to it first. Just my 2 cents

### Reply 13:
Guy'sAny word on merged mining - BTC+ NMC with this setup. I am aware of the fact namecoind is needed also but what about poll, does it support it?I found out this is supported. I will paly with it and let you know if i found out how to do it

### Reply 14:
The problem if you don't know how to use linux and follow the basic steps that are already in this post, are... well, how would you then run the pool? Even just for yourself? At the very minimum, you would need to go in and delete the bitcoin wallet, because if Jeff made one obviously he wouldn't duplicate his own wallet into the image, it would be empty or a generic one. Are you comfortable doing that in linux? What about all of the SQL related stuff? Troubleshooting?It seems like to me, if you don't know linux, you shouldn't run this pool. If you have one avalon, join an existing pool. If you have 3 avalons, run each of them solo. There will be variation but with the extra power, on average you'll still be able to pull some blocks down and with less variance than a single machine.If you want to operate a public pool and do not know linux... then my arguments, well... just please don't.

### Reply 15:
well i know enough to make me dangerous. i've run my own small ubuntu server solo pool for a year now w/o any problems.it's just the eloipool installation stuff above i've never seen before. i'm sure once i get it installed it shouldn't be much of a problem to maintain. getting an image installation would help alot of us.

### Reply 16:
don't you use your own block reward address?

### Reply 17:
I would highly suggest that you keep the testnet setting in the config.py and configure your bitcoind to use testnet and mine a few blocks there to make sure your setup is working before you swap it over to the real network. That's why testnet exists.

### Reply 18:
A very go<rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SSD"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Ubuntu server"",
    ""hardware_is_owned"": true
  }
]"
10880,"Date: 2020-04
Topic: Bitmain commoditizes cryptocurrencies, plural, as its complements
### Original post:
Found via Artemis3s excellent response:Artemis3 said everything that I usually would have, plus more; and the discussion thus got me thinking about Bitmain. What is their strategy, on a deeper level?Well, lets talk business. Most people on this forum know me for being suicidally principled; but I do understand business, in a purely pragmatic sense. And, business is business. Mining is a for-profit activity; miners obviously dont want to shoot themselves in the foot financially with poor business decisions based only on idealism. Of course, one of Bitcoins finest qualities is how effectively it aligns self-interest incentives with the greater good of Bitcoin; and if Doing The Right Thing makes business sense, then you must be incredibly stupid to do otherwise.My flash of insight here: When you buy from Bitmain, you are funding a hostile competitor. Not only as a miner, but as an investor in Bitcoin. Moreover, you are incurring a dependency of your business on a hostile competitor. All of this is sheer idiocy, from a perspective of strictly business.I observe that Bitmain attacked Bitcoins uniqueness. Anyone who has studied the nature of money should know how detrimental an attack on<rest of post truncated>

### Reply 1:
Quite a few words you got to say.How about this...You make me a better and more efficient miner and I'll buy from you instead of Bitmain.Good idea?

### Reply 2:
Thanks. Though if answers to gmaxwells explicit request from the previous Bitmain thread get deleted, I think there will be bigger problems than my losing a post. :-)P.S., if you like any of my Bitcoin advocacy arguments, please feel free to copy and share anywhere you want, with proper attribution of my authorship. For the greater good of Bitcoin (which is in the self-interest of anyone who has skin in the game...).Those quite-a-few-words explain reasons why that is a shortsighted, self-defeating business strategy.Try reading. Good idea?Having said my piece, I will probably not make a habit of posting in Bitmain threads here.

### Reply 3:
I quoted for a reason.In case it gets deleted I have a few copies in my pm's.Love the argument but off topic I want to save it for reference.Here goes counter point:once ltc was invented btc lost it's unique status.All pow coins are simply commodities to be traded like stocks.All pos coins are figments of imagination actually worse then mined coins.Only one coin attempts to be unique and resist asic mining xmr and the problem is the algo can be used by other coins.So after play and mining and really pushing crypto coins as a storage of wealth for years. I gave up as The game is done on many levels.I mine and sell and convert to fiat. Basically because of the argument you are giving. My piece of the pie will never affect the industry as I will never be at 1% of any big coin. But I have enough gear and cheap enough power to make money at this.I do Hold 1 coin doge I have more then 1 million of them.I saw btc go from 6 to 20,000 a factor of 3333x. It is now at 7,200 it will never do 3333 x 7,200 = 23,997,600 usdNo crypto coin will do 3333x what it is now if it is pow via asic and clonal it is basically an alt. So since I see no way to rescue pow coins and go back to the 'good' old day<rest of post truncated>

### Reply 4:
you could post this all here:<link> it is a mining topic that involves every coin.I realized that when the asic companies attacked gpu mining and every developer folded other then xmr that pow will die and hodl is fucked.I go over hundreds of ideas to prove that wrong and I come up with the conclusion that asic resistance is a must and we need more then just xmr doing that.I also realized that cloning a coin and algo sharing can't work long term.So here we areBTCBSVBCH sharing sha-256 and all of us know that anyone of them would eat the others alive if they couldSo I gave up on hodl I make my fairly small mining profit and convert it to cash and gear more then coin.gear 80%coin 10%cash 10%debt 0%my current holdings ratiomostly gear which is as belowsha-256 70%scrypt 10%cpu xmr 10%gpu 10%

### Reply 5:
I do agree to the majority if not all of it, however, what you seem to be missing is the fact that mining is treated as a ""very short business valued in FIAT"".It is safe to assume that at least 95% of miners do it for profit and not for the love of bitcoin, the proof is, they shut their mining gears the minute they become unprofitable FIAT wise.This alone should give you a good idea of why 95% of miners wouldn't listen to you in the first place. Now let me dig a little deeper into the ""very short business valued in FIAT""You see the thing with crypto mining, in general, is that the calculations are done very short term, in most cases, it's merely a period of 6 months on average, in other words, every mining purchase decision they make is valid for that short period of time, your the<rest of thread truncated>
","[
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  },
  {
    ""hardware_name"": ""gear"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sha-256"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""scrypt"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cpu xmr"",
    ""hardware_is_owned"": true
  },
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12013,"Date: 2012-08
Topic: MSI Afterburner problem after reinstalling windows 7
### Original post:
Hi everybody,I have been mining on windows 7 with a 6970 and a 5970 on my desktop machine, and i reinstalled windows from scratch yesterday and now i can't get afterburner to work properly.I underclock my memory to 150 MHz with afterburner, using <truncated> I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on <truncated> 2I run catalyst 12.3 and afterburner 2.1.0, as before the reinstall of windows.But now when i start afterburner it looks like this:<link> the sliders for over/underclocking doesn't seem to work.Does anyone know what the problem is?Thank you for your time!

### Reply 1:
See this post here.Download the file, drop the DLL in the MSI AB folder, and you're good to go.

### Reply 2:
Thank you,Link was broken, found the file elsewhere but it did not work.Gonna try installing catalyst 12.1 now...

### Reply 3:
I tried to DL it from another place, but it was like a 5MB download, and I didn't dare trust it, even after multiple virus scans. The real file should be like 300kb.

### Reply 4:
Thanks for trying, after installing 12.1 i was able to locate the file (352 kB) and save it.I then uninstalled all amd software, and then installed catalyst 12.6, and now it works with AF 2.1.0!!!I'm gonna try 2.2.3 and se if that works to. Could not have done it without your help, thanks again.

### Reply 5:
AF 2.2.3 works, but, after closing and reopening, the sliders are still at the same position (cannot lower memory voltage more than before).I guess I'll stick with 2.1.0 for now.

### Reply 6:
On 2.2.3, delete the 2 files in the Profiles folder inside the MSI AB program folder. Next time you open it, it'll ask you to reboot your PC to determine default values, which you'll have to say no to every time, but you'll be able to set your clocks to whatever you want.On my 7970, I open AB, press NO I don't want to reboot, and slide mem bar down to 750. Close and reopen AB, NO I don't want to reboot, slide mem bar down to 375. Close and reopen AB for a third time, NO I don't want to reboot, and then I'm able to slide my mem bar down to whatever I want (I like 325).

### Reply 7:
Oh I see, I wonder if it's worth the extra clicks to have 2.2.3...

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10475,"Date: 2017-08
Topic: Chinse manufaturers
### Original post:
Hi,Just saw this <link> tried it ? 1 thing is that XFX is brand and they are manufacture they should sell under there name not in the name of XFX am i right ?same with MSI cardsBut i am new in the bitcoin world so need assistance or there is big no no with any Chinese manufacture ?Thanks

### Reply 1:
You can't mine bitcoin directly with graphics cards.

### Reply 2:
Yeah please go the altcoin section where this kind of discussion belongs if you are interested in graphics card based mining.

### Reply 3:
oh Sorry , but what about this Chinese manufactures , do we get any guarantee of delivery ?Thanks

### Reply 4:
Get a lawyer before you order in mass from any Chinese <truncated> papers drawn up for YOUR protection.....also I'm sure there is a VERY large minimum order,like 1000 cards if not more

### Reply 5:
Also don't forget to cover yourself for things like customs fees, tariffs, taxes and import fees or Vats etc some countries require electronics to meet specific standards when brought in in bulk.

","[
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23206,"Date: 2020-02
Topic: Running S17 or T17 from the dryer plug in US
### Original post:
The oven and dryer are the only sources of 240V for most in US (residential).Were you able to hack it? If so, recommend the needed cords/plugs. Thanks.I was able to find a solution, but the costs are about $160-170.Maybe there is something better.

### Reply 1:
that is an easy hack buy these two<link> picked 6 ft there are shorter and longer.<link> 8-12 buckscut the end end of the c19 to c20 splice proper plugsince many plugs are around I won't link

### Reply 2:
@PhilopolymathYour wiring looks like a fire hazard is on the way.Why don't you use crimp connectors and cover it with heat-shrink tubing?So what I'm saying is that do it by the code or don't do it at all.That is my motto.

### Reply 3:
There's plenty of 240v ""sources"" within your breaker panel. Why not just run a new 240v circuit(s), and do it the right way? A 2-pole 20A breaker, some 12-2 wire, and the right outlet <link> you can use the proper cords. I have one circuit per miner.When I ran out of room in the main panel, I decided to wire up a 100A subpanel and put all the miner circuits in there

### Reply 4:
OK, thanks.The dryer is 14-30, though (four plugs, one L shaped).Maybe more splicing needed.

### Reply 5:
<link> bucksso {monoprice 2x 13 to c20} >>>> {mono price c19 to c20} >>>> {amazon plug}you cut the c20 on the middle wire and attach hot hot ground to the l 14- 30 plug20 bucks maybe 30.you need to find a diagram on how to wire a l 14- 30 plug with hot hot groundNote legal disclaimer : It is mechanically sound plan. But I do not know your code for your state.using 240 volt 30 amp power circuits can kill you maim you or your loved ones. so the work is on you not me.I am self taught via years of practice so if you do what I suggest here it is on you to do it right.run s17 or t17 or s17 proSecond <truncated> pull a shit ton of power over 3000 watts they are borderline to use with the 2x c13 to c20 spilt cable.I do run 1x t17+I do run 2x t17eall three run hotter then I like and I will not buy them any more.

### Reply 6:
NO..there is NO ground used on 220V Single phase home lines in N.A.....they use 2 hots ( usually a black and white/red of at least 12-14 guage for 30amps 10-8gauge for 40amps) each Hot then shares a ""COMMON"" usually green. I have plenty of experience using dryer and stove plugs spliced to run 30 amp and 40 amp breakers. I ran 4x S9's off each 30amp breaker at times running up 24 S9's for 180 amps off of 6x 30 amp breakers on a 200amp. panel. Splicing the open wire end of 4 C-19 plugs to open wire of a Stove/dryer plug can be tricky if trying to fit all lines into a large marrette. I use large marrettes but also make damn sure all wires are well adjoined and soldered and then wrapped in tin foil BEFORE inserting into a marrette then shrink wrap, very very well reinforced so the splice can't be accidentally pulled apart and of course then well insulated with electric tape. In 3+ years I have never had a short or break or a connection even get hot. I still use this set up to run S9's as space heaters and for testing new gear at home before sending off to the Host. Note that with most heavy gage wire the ground is NOT counted as a Conducting wire...In my case the dryer plug has green f<rest of post truncated>

### Reply 7:
yeah but last I looked on my panel both common and ground connect to same bar.so what's the difference?if you take a l14-30 plugput the green wire to the l prongand the white and black to the hots won't this work?the 2 hots form the c19-c20 cable and the ground/commonIn my home my breaker box has 2 120volt hots and a common/ground barwhen I wire 120 I do black to one hot 120 then both the white and bare ground to the common/ground bar.when I do 220I do 1 to hot 120I do 1 to other hot 120I do 1 to common/ground barI don't do 4 wire 220 wiringwhich would be1 to hot 120 A1 to hot 120 B1 to common /ground bar2 to common /ground bar.since his gear will use a 3 prong receptacle and the c19 to c20 is 3 wireyou wire to the 4 prong1 to the hot1 to the other hot1 to the L shape prong which I called a ground.0 to the 4th spot.both the L shaped prong and the 4th spot will go to the common/ground bar.so whether you call it a common or a ground in either case they lead to the same spot.

### Reply 8:
Common/Return is often erroneously called ""Ground""...it is a VERY bad habit.The whole purpose of a ""Ground"" wire is to NOT BE CONDUCTING the load..to be available if a short happens to contact the appliance and make it LIVE/HOT, the ""Ground"" is meant to be attached such that, if the short makes a connection with an appliance and it then becomes ""LIVE"" or ""Hot""... the ""Ground"" will THEN ACT as a return for the circuit rather than having the current use the fool who is touching the unit as a return to complete the circuit. It is this very factor which makes AC MUCH safer than DC and was most dramatically demonstrated by Tesla during the current <rest of thread truncated>
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    ""hardware_name"": ""T17"",
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    ""hardware_name"": ""miner"",
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""t17+"",
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14073,"Date: 2011-05
Topic: Multiple miners on one card?
### Original post:
I have just one 5850. It pulls ~273 Mhash/s at stock speeds. Now, i know that solo is near impossible even with dual 5970 and will be even more so, however do you think that the chance of finding a block increases if you have multiple instances of a miner running? I have 4 currently on my 5850 and the speed is somewhat divided for every miner.Assuming that a quad 5970 uses the same method, don't you think the probability get's increased by a small fraction that you will find a block faster than with one miner? I mean it's basically the same thing with pools. Every worker requests new works, increasing the chance of the bitcoind sending the winning hash.

### Reply 1:
One miner, one GPU.

### Reply 2:
The GPU is the GPU. it's the program i am referring to as a miner(cause it it's the one doing to job more or less) which on my case is poclbm(GUI)

### Reply 3:
I have tried this myself, and it doesn't work well. You're basically slowing down the hashing so much, you will be going slower on each instance. Think of finding the block like a lottery. 1 miner/GPU set would enter many times quickly, or you can divide it into four people entering slowly. Either way, you would come out with the same amount of chances.

### Reply 4:
I've been monitoring the progress and the most i've lost is 4-5 shares less than usual. Sometimes i actually get a few more.

### Reply 5:
Still: if your GPU makes 1000 hashes/sec it doesn't matter if there are 4 miners with 250 each (probably less cause of overhead) or 1 Miner with 1000. Each Hash has a Chance of winning, Not related to Number of miners

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14220,"Date: 2011-06
Topic: 4x5870  1200 watt not enough???
### Original post:
hey guys i am building a few systems right now..and have pretty much everything ready ! last poblem is: i just killed a 5870 as i had 4 of them runnign on one psu ! but i have seen others here on the forum doing the same without any problems?MSI 890FXA-GD70 AMD Sempron 145 2.8GHz BoxKINGSTON KVR1333D3N9/2G 2048MB DDR3CORSAIR CMPSU-1200AXEU 1200Wa few XFX ,Sapphirre , Powercolor 5870 ! any suggestions? i am finihing the systems now with 3 cards each ..but i quite don`t get why this doesn`t work out

### Reply 1:
I would suggest you read <link>

### Reply 2:
Pretty sure it wasn't your PSU as i ran 1 5970 and 2x 5870 together on the OCZ ZX1000 which is a 1000W. The AX1200 is even better and rock solid so i think it was something else that killed your 5870, or it probably went bad on itself.

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    ""hardware_name"": ""AMD Sempron 145 2.8GHz"",
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    ""hardware_name"": ""KINGSTON KVR1333D3N9/2G 2048MB DDR3"",
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    ""hardware_name"": ""CORSAIR CMPSU-1200AXEU 1200W"",
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    ""hardware_name"": ""Sapphire 5870"",
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    ""hardware_name"": ""Powercolor 5870"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OCZ ZX1000"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AX1200"",
    ""hardware_is_owned"": false
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]"
23137,"Date: 2019-11
Topic: Quiet Asic Miner
### Original post:
Not a bad idea. As long as the systems can produce the needed pressure to push the airflow needed any blower can work and will be far quieter than the 120mm high pressure fans that BM and others use.

### Reply 1:
I think I'm gonna try it, The first time I saw this system, I thought the miner had to control the big fan, but I was wrong... They have 2 speeds on the big fan controled by the input power, so the little cable that connects to the board its only for the miner could boot up without the original fan. its much cheaper than the boxes and all the other things to quiet the miners out there, just have to find a way to fix the big fan to the miner. 3D printing ??

### Reply 2:
Seems interesting. I couldn't see form the video if they had the front facing case fan on or not. I imagine this would use more power than the stock fans but essentially this is all their trying to sell.

### Reply 3:
Well do remember that the stock fans are rated to pull 2.5A each @12V = 30W each.

### Reply 4:
It's not a bad idea. I believe the 395CFM amazon link you have listed is rated for 60w. I believe your electricity consumption would be the same as what you miner would be with the 120mm fans.As far as attaching the fan to the miner, 3d printing is good. You can print an attachment that has a duct connection. You can then duct your miner to the 395CFM you have listed.

### Reply 5:
Hello, I know that I've away for a while, but I dont want anyone to burn their miners :-) I still think that it is a good idea and there are Fans less expensive, ~20 with the same CFM that solve the noise fan problem forgetting all the boxs and all the others things. But beware with high CFM... I tried with 400 CFM, and when I turn on the fan with the miner off, the FRONT fan started moving quickly... When I turned on my miner, after some minutes it went off... I still think that is a good idea, but if the REAR FAN (inline 20) as a big higher CFM, the front Fan will burn or will burn the board ... Dont make the same mistake that I did... if someone buy one of these inline fans, it will solve the noise problem with 20, but choose one with the CFM closest to miner REAR FAN CFM as possible :-)

### Reply 6:
Hello,I know there is a lot of topics with noise boxes and silenters for asics, normaly expensive ones,but I cannot find anyone talking about this system,there is this company <link> wich sells the system for about 210, wich seems to have good results <link> anyone try to use an inline fan duct with an Asic miner ?for example this one <link> only 60, has 395 CFM and high pressure, and there are some cheaper, about 30.I think that the system of that company its something like this Fan with a Fan unlocker to the Board, so the system can pass without the original fan.Has anyone tried this ?Do you think it can work?Thanks,Regards

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    ""hardware_name"": ""3D printer"",
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17221,"Date: 2012-08
Topic: Looking for a stable router to buy.
### Original post:
Hi. I'm looking for a stable wireless router. I had a WR641G that hanged about 2 times a day, requiring power cycling, when used in router mode (AP mode didn't cause fail). Then I got a WR741N, borrowed new in box from a close friend, and it also hangs requiring power cycling about once every two days. Power supplies were changed, router was configured by myself and everything. I'm really tired of these crappy TP-LINK routers stopping my mining at night, although I don't blame the brand, I may have got two lemons.I'm looking for a nice router to buy. I prefer stability over Wi-Fi speed, I'd prefer at least 802.11N 150M, but 802.11g will do (there's a lot of RF pollution over here caused by having a lot of wireless networks nearby, I may need that wallpaper that reflects 2.4GHz RF). My price range is preferably 50$ or less, although I may get up to 75$ if it's really worth it. I'm looking for models that are in newegg/amazon, not looking for used stuff right now. Please tell me your personal experiences with your routers, and recommend me some .

### Reply 1:
I've been using a WRT54GL with Tomato firmware for several years. It works very well. I was running blockexplorer.com behind it for a while, getting over a million hits per day.

### Reply 2:
At that price point I think WRT54GL + Tomato firmware is the winner. I've heard a lot of people like the Apple Airport Extreme but that's more like $200.

### Reply 3:
WR1042ND + dd-wrt is a killer router for less the 50$

### Reply 4:
I've had good luck with refurbished E3000's. Gigabit switch, simultaneous dual-band, and can run DD-wrt or Tomato. There's only one hardware version, so you don't have to worry. You can find them for $60 or less.<link> WRT610N is usually the exact same router. However, the WRT610N exists in two hardware versions, so I prefer to order the E3000 so I know what I'm going to get.

### Reply 5:
I just flashed my router(WR741ND) with DD-WRT, to check if stability is improved. If not I think I'll get a WRT54GL. Thanks to all for your advice.

### Reply 6:
<link> vulnerable routers:<link>

### Reply 7:
Well, I don't really care, if we get confirmed cases of the attack I'll just disable telnet & SSH to my router by dd-wrt, change the password to use a more secure one, disable UPnP and vulnerable features, and hope I don't get targeted. Also I think that with current secure browsing you can detect that sites are using self-signed certificates and not <truncated> ones. And, plus, my router is behind two load balancers plus a web cache server plus a hotspot server. And, I have a firewall in my computer, and wallet's encrypted. And, all of that just reduces the chance of my router/bitcoins getting targeted, if some of these black hat guys really want to get me, they will do so, this isn't the FBI nor ""cyber-police"" nor anything of that. Meh, if it becomes true I'll just pay a VPN service from a trusted provider with fixed IP and browse through that, although vulnerabilities are always found on windows. I'm screwed

### Reply 8:
+1 on WRT54GL and Tomato firmware. I've used it as the router for the main house/tenants for years and it's worked fine and only needs power cycle about once a month or two.<link> sale right now for $50 w/ free ship @ <link> downside is that it's an older generation model that's only 802.11g. G should be fine for mining though unless you have signal problems.

### Reply 9:
Look for DDWRT compatable models.

### Reply 10:
Make sure you have good range.Personally I prefer Cisco Small Business Routers, as they are designed to run 24/7 and usually have a great wifi range.But if it all depends on money, pick one which CAN run 24/7. I've had my Cisco on for 8 months non-stop doing all the house's wifi + my mining machine.

### Reply 11:
I got a refurbished Netgear WNDR3700 about 6 months ago, and its awesome. No DDWRT compatibility, bit it gets the job done.

### Reply 12:
the best way to go is with a direct wire hookup

### Reply 13:
Yup, I prefer to use my dedicated fiber link that jacks into the local ISP's SONET ring directly. (true story, actually)

","[
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    ""hardware_name"": ""WR641G"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""WR741N"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""WRT54GL"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Apple Airport Extreme"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""WR1042ND"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""E3000"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""WRT610N"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Netgear WNDR3700"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cisco Small Business Routers"",
    ""hardware_is_owned"": true
  }
]"
16918,"Date: 2011-08
Topic: Almost there... Soooo close
### Original post:
Alright, I have my 2x 5830 rig up and running LinuxCoin on a 16gb usb device, 4gb persistence file. First rig ever. First time using Linux ever.It feels rather exciting to be writing this message from my new rig...Anyway, I'm just poking around, trying to simultaneously learn linux and figure out how to start mining. I opened the Bitcoin client... that's grabbing the blockchain right now...I opened GUIminer... and it says, ""NO OpenCL devices detected"". Question: What does this mean? Do I need new / better drivers for my cards?Any help is greatly appreciated... thanks!

### Reply 1:
Yea that means you don't have the correct drivers installed.

### Reply 2:
Almost ready to take the plunge into linux, I know nothing of it..What linux distrib did you use ?or is linux coin a distrib ?

### Reply 3:
linuxcoin is indeed it's own distro. I've learned a lot more from installing ubuntu and messing around with that than I did during my brief foray into linuxcoin. I'm no linux guru, but that's my 2 cents.or satoshis or w/e : )

### Reply 4:
well, im no slouch with pc's, so I suspect I can get ubuntu up and mining.. just wonder if its worth it ? Im having only minor, windows related errors on 1 of my 4 machines.. if it aint broke.... ..

### Reply 5:
As far as bitcoin mining is concerned from a performance perspective there is little diffrence between linux and windows in most cases it's primary advantages are simply it's cost(0) and ability to be run from a flash drive. Prior to the current revisions it would allow more than the limit under windows(previously 4 now gpu's however configurations exceding this are extremely uncommon due to the power consumption (think how many watts you'd need for 8 5830's) the other primary advantage was the lack of a requirement for dummy plugs which was never more than a minor inconvienence at best.In short if you're up and running already with windows don't worry about linux.

### Reply 6:
OK, so I downloaded the newest version of Catalyst... and it's a file with a .run extension...After a bit of research, I found I could use ""sudo bash"" to get that .run file to um... runAnd it tries to install some drivers... and fails. It tells me I have to remove the old drivers first.A couple questions:1) Why the heck would there be outdated drivers included with Linuxcoin? Even if they're outdated, shouldn't GUIminer still NOT say ""no openCL devices detected?""2) How the heck do I uninstall drivers in Linux?Thanks for any help anyone can provide.

### Reply 7:
I just want to add to this, I don't have the option of using Windows right now because I can't afford it.So... BUMP!:-)

### Reply 8:
You don't need new drivers. They should be included in linuxcoin.Did you click accept or ok on the window which pops up at thebeginning with some text? Because this is the License for theAMD APP SDK, you need to accept this, else you cannot mine.Edit: try to type aticonfig --lsa in a terminal and see if it lists you card(s),if it lists them the ati driver sees your cards, which is good

### Reply 9:
I didn't see any such pop up window...Yes, I did the aticonfig and it shows both my cards, but AMDOverdriveCtrl only shows one as being ""active"". (might be the other way around, i'll have to check again).So: If I can find this pop up box and ""agree"", then GUIMiner will not say ""No OpenCL devices?""Also: How would I go about activating my (apparently) inactive 5830?

### Reply 10:
Well, I only have an older version of linuxcoin here, but I hope it still works the same.You can bring the Licence window up again, by pressing ALT+F2 and then running ati_licenseIt should popup a window ""AMD APP SDK license agreement"", close that window and anew one should popup asking ""Do you accept AMDs license?"", there you have to click YES.If this somehow does not work, it can still be done from a terminal.cd /; sudo tar xvf <truncated> know whats up with your 5830, but this should help to get OpenCL going,which Guiminer was complaining about.

### Reply 11:
Oooooooooooookay, so i ran ati_license, and agreed to it. And so NOW, when I run GUIminer...Nothing <truncated> it's just my lack of understanding of Linux, but I dunno I don't really think so. I understand commands and running them from a command line and the filesystem and whatnot.BTW... what does the ""tar"" command do?And... What the heck is going on with GUIminer now? If it's running in the background, how the heck do I get to it?? Because Linux's ""system tray"" or whatever the heck it's called doesn't function ANYTHING like windows, apparently...

### Reply 12:
Ok, hey hi again yep it's me again So.... I started fresh with a new install of Linuxcoin on my usb drive. Accepted the license agreement, bitcoin client up, ran guiminer and PRESTO i am mining at deepbit.net with ~260MH/s ... only ONE card...OK, so then I go to a terminal to run aticonfig -lsa annnnddddd... ""No supported adapters detected"" ... !!!!!!!!!!<rest of thread truncated>
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    ""hardware_name"": ""2x 5830 rig"",
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  {
    ""hardware_name"": ""16gb usb device"",
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    ""hardware_name"": ""4gb persistence file"",
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22228,"Date: 2018-01
Topic: S9 13.5t 1 Hashboard no have hashrate
### Original post:
<link> some chip cores are not opened FAILED!Test Patten on chain[5]: FAILED!chain[6]: some chip cores are not opened FAILED!Test Patten on chain[6]: FAILED!chain[7]: some chip cores are not opened FAILED!Test Patten on chain[7]: FAILED!what happen for the miner runing 2 monththe ASIC still is ok, but the is Realtime no have the hashratechange the power supply reset + update fw also is same the issue

### Reply 1:
try adding a working pool to the 3rd pool, im not sure but it might be splitting the work between the pools and having a dead pool would explain why your missing 1/3 of the hashrate

### Reply 2:
Step one is ALWAYS isolate the problem. Unplug the working boards and see if the problem persists. Next, try the card on a different controller channel. If step one fixes your problem your power issue is your power supply(uncommon). if step two fixes your problem your problem is either the controller for the cable itself(pretty rare). If your problem persists, your hashboard resident buck converter is screwy and needs to be repaired.(common)

","[
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    ""hardware_name"": ""power supply"",
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  {
    ""hardware_name"": ""controller channel"",
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    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""buck converter"",
    ""hardware_is_owned"": false
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]"
20831,"Date: 2015-12
Topic: How to set up mining
### Original post:
Hi AllI have recently bought a U3 and trying to set up, i believe i have downloaded the required bits of software, the part i am not clear on are the details that i added to the notepad doc that i re save as .dat? where do i get the details from to go in this doc. do i need to register with a pool and the use name details etc go in there??Any help appreciated.

### Reply 1:
I think your looking for batch file .bat extension. It allows you to run commands with it just make for sure in folder with mining software.Also you can open up command move to folder. Then run command and see if it works that way. With this normally errors stay up so you can see what is going wrong.

### Reply 2:
Hi Notlist3dI downloaded CGMiner 4.9.0 and made a notepad file the details i am looking for are like these below...cgminer.exe -o us1.ghash.io:3333 -u DebitMe.U3 -p 123 (these are the details debitMe Used.)Do i just replace DebitMe with Huntbit?Cheers

### Reply 3:
If you have an account at ghash.io by the name of Huntbit, then yes. That will work.

### Reply 4:
Thanks much appreciate the help.

","[
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]"
24120,"Date: 2023-04
Topic: Mystery Miner S5 Issues - Replaced power connectors
### Original post:
Based on the error ""1 configure slave: 70 data 1 falied No such device or address"" it seems all hashboard is not detected properly.Do you mind to try to disconnect all wires and replug them back and check all sockets and plugs are all clean. Also check the fans if both of them running fine.I notice that the image that you posted above is different. I thought that it was an Antminer s5.It looks like a Chinese version of the s5 miner?Next time make sure to put all logs inside the insert code tag because your post above looks messy.

### Reply 1:
Hey friend, ill be sure to do this momentarily! and no, i have several brands, but all the information i have for this one is ""S5"" lol! Its from China aswell i can confirm that!

### Reply 2:
If I am not wrong, if your ASIC is like on your photo, it could be a S15 instead of a S5.Antminer S5 :Antminer S15 :Are you sure that you did a correct job when replacing the sockets ? It could explain this error Did you try to isolate the issue with only 1 hashboard connected each try and with different ribbon data cables ?Do you have the opportunity to try with another PSU ?

### Reply 3:
I have never seen S5 units that looks t15/s15 as mentioned above.Did you flash this unit with S5 firmware? if you did then this might be the reason why plugs/sockets are burnt.If I were you check the control board of this unit and post the image here so that we know the exact model of this unit and to find the right firmware for this model.

### Reply 4:
Sorry about delay guys. So the information i have the miner is the original photo i posted, its identical to this. I have attached links to my drive containing an a exact photo of my miner, please forgive me as i dont have a smartphone currently so i cannot share my own photos!This issue is 100% since the plugs began to melt. There was no damage prior to the plug replacement and the miner was hashing fine on all boards.As for firmware, i purchased this amongst 3 or 4 others, The vast majority of them were Bitmain S9s, i only managed to find, source and flash firmware for those models.Im yet to find any information online regarding this miner in question.As for the quality of the replacement of plugs, it was my first time soldering. Im more than happy to replace them and try again.As for data cables, psu cables and so forth i have reseated all cables to and from psu, control board, and dashboards.I have several other PSUs, i have one spare Innosilicon T3+ psu. Im still unsure as to weather i could mix brands of psus with different brands of miners, is this possible to rule out the PSU?Screenshot to my dashboard, log after re-seat of cables: <link> I just wanna say thank you very muc<rest of post truncated>

### Reply 5:
Sorry for double posting!Heres where i purchased it! - <link> is a man with the exact same miner and some more info on this forum - <link> i have removed all dashboards, resoldered one boards sockets and tried again with no luck, here's the logs.Code:Apr 26 09:11:24 rockchip cgminer[1407]: chain0: power downApr 26 09:11:24 rockchip cgminer[1407]: /dev/i2c-1 configure slave: 70 data 1 falied No such device or addressApr 26 09:11:29 rockchip cgminer[1407]: set_vol_on_i2c_b1p: set chain: 1, vol: ff,Apr 26 09:11:30 rockchip cgminer[1407]: B1 create <truncated> 26 09:11:30 rockchip cgminer[1407]: B1: checking B1 chainApr 26 09:11:30 rockchip cgminer[1407]: chain0: power downApr 26 09:11:30 rockchip cgminer[1407]: /dev/i2c-1 configure slave: 70 data 1 falied No such device or addressApr 26 09:11:32 rockchip cgminer[1407]: fan1 speed:5970, fan2 speed:6120Apr 26 09:11:34 rockchip cgminer[1407]: chain0: encore first modeApr 26 09:11:35 rockchip cgminer[1407]: /dev/i2c-1 configure slave: 70 data 1 falied No such device or addressApr 26 09:11:37 rockchip cgminer[1407]: fan1 speed:6150, fan2 speed:6030Apr 26 09:11:39 rockchip cgminer[1407]: dm_compat.c,5158: poll fail !Apr 26 09:11:39 rockchip<rest of post truncated>

### Reply 6:
It looks like a cheetah s5, not the Antminer, and based on my old post it's a Zhongtian s5 miner. I can't find support for this unit here or a website out there.There is someone here who shares the firmware for Aisen A1 and maybe this one will work here's the post below- <link> this doesn't work try to contact Zeusbtc and maybe they do have firmware of this unit the only problem is they don't give it for free

### Reply 7:
Thanks kind sir. I have resolderd two of the boards and still the same codes. Could this be firmware?EDIT: So i downloaded that firmware, flashed it with no issues. Here are the logs from the new firmware you shared. Code:Jan 28 23:58:20 rockchip cgminer[260]: Shutdown signal received.Jan 28 23:58:20 rockchip cgminer[260]: Complie date : Aug 26 2019Jan 28 23:58:20 rockchip systemd[1]: Stopped Cgminer.Jan 28 23:58:20 rockchip systemd[1]: Starting Cgminer...Jan 28 23:58:20 rockchip systemd[1]: Started Cgmin<rest of thread truncated>
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    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Chinese version of the S5 miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S15"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain S9s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Innosilicon T3+ PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cheetah S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Zhongtian S5 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Aisen A1"",
    ""hardware_is_owned"": false
  }
]"
16956,"Date: 2011-10
Topic: Ufasoft miner gets quarantined by Symantec Antivirus
### Original post:
Starting today, even a fresh downloaded miner directly from ufasoft.com gets kicked by SAV. Some kind of generic trojan detection.Anyone else with the same problem?Ufasoft's miner is the most efficient on my platform..

","[
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20825,"Date: 2015-12
Topic: ASIC MINING getting Winter Rates for Elec Heat (xcel) how to save 4c kwh!
### Original post:
Note: This is a ""LONG"" frigging post for folk still HOME mining ASIC's in Winter areas of the <truncated> on how to get winter heating rates at a savings ( 4.43c kwh DECREASE in my case with Xcel Energy (Midwest USA) .....thru the 'circumstances' I describe in detail below...hopefully it helps some folk ..that are home Minng ASIC's like me trying to extend their""Home Miner Dream""If it does not apply to you in anyway ....just move on....(I don't need folk in Florida yelling it is 'not fair' I agree...it is 'not fair' but here it is in detail)Once upon a consumer call to Xcel.......a Xmas Miracle.....Just a note for folk with ASIC miners either BTC or LTC. I called a REGULAR help line person for Xcel Energy (Electric) (Midwest USA) on a billing question *unrelated*...and the rep goes "" Man your electric bill from last year is up 225 bucks a month on average"" ...Not sure exactly what is going on...got a bit spooked ....( I have a 100 amp service running 2500w for two KNC Titan Scrypt Miners (LTC to BTC)....I replied (to re-direct any inquiry by Xcel because not sure where to go with above) and said....""Yeah I have 'computer servers' in the basement (kinda true she likely would not kno<rest of post truncated>

### Reply 1:
Dang I was hoping someone would have found this thread of use...but no real numbers for such ...As a side note...I'm also saving on my Gas Budget Heat the house plan with the boiler furnace...a savings price drop of $45 a month year round in my budget plan Gas use.You add that to the $115 for 5 months decrease in price of electric from 13.7c to 9.27c kwh (thru xcel) in my case and that is $1115 a year savingsAgain with that kinda savings and the btc halving and other possibilities of btc and ltc price going up in 2016 with the halving etcA person ..in a cold climate winter...especially with Xcel as an Electric provider....would have ...again with a phone call to a Xcel customer rep after hours ..they have the power to tag this you don't want this bandied about during the day shift etc....let the nice 'regular customer rep' tag it imho) ..your odds of pulling this off doing it along the lines of my above postis better then 50/50 easily imhoWell anyway ..perhaps it is just me and a fluke...I'd like to see at least giving 1 person a happy xmas by pulling this off with his GPU farm doing etheirum and/or whatever...or thefolk with big ass asics doing btc or ltc like me yet at home...use<rest of post truncated>

### Reply 2:
Thanks for taking the time to post this! I'm sure it will help out a lurker or two. I'm in Canada so can't help much out here. I googled our local hydro company, can't find any rebates. Which is too bad or normal bill before miners is $360.00 a month for a 1400 sq home. yay electric heat:(

### Reply 3:
its not a rebate for Xcel it is a flat out change of electric rates for winter.....I'm in Minnesota....So it works like this (again my numbers are REAL cost with <truncated> ....the total 2505 kwh last month divided by my 'actual' monthly bill (not budget) ..the amountof billed electric used for that month) so with this in mind13.7c kwh (rest of the year)12.3c kwh (winter reduction in electric rates for everyone Xcel..you don't do anything it is automatic)09.27 kwh (winter reduction in electric rates IF YOUR PRIMARY HEATING METHOD IS ELECTRIC FOR YOUR HOME ONLY) (heh was not an issue as you can see in my prev post with 2500w being used 24/7 for 30 days .....ie again rubber stamped)so dig around ...ask a rep....point out Xcel's plan...etc....maybe something is lurking out there..just saying....again it was just 'dumb luck' I tripped over it ..never heard of it..but it was on the back of the Xcel Bill so go figure)Anyway ..between that and the 45 bucks per month on my yearly GAS plan for heat and hot water..reduction per month...(some of that is weather but still) ..it is significant indeed about $1,115 bucks combined savings from winter to winter I figureI again am hoping the 'halvi<rest of post truncated>

### Reply 4:
Cool that you're saving money, but why are you nervous about your power use? They don't give a damn what you use it for so long as you pay your bill. The more the merrier, in their opinion. They'd be happy to have you max your service out.

### Reply 5:
Well they did offer and 'assumed' that I needed the extra electric per month for 'heat' not that I was mining coin and the after effect was 'heat'....but then again I did tell them it was 'computer server equipment' thus the increase of price per month ave from before I home mined from prev year...ol 225 a monthso you could be correctbut again1) it was offered by the customer rep this 'home heating decrease in elec costs per kwh for winter heating ..if primary method of heat"" and I told her it was 'server equipment' so......she flag'd it I did not2) offered myself up for an inspection..she said likely u<rest of thread truncated>
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    ""hardware_name"": ""KNC Titan Scrypt Miners"",
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20614,"Date: 2015-09
Topic: Help need on business plan for bitcoin mining (1 BTC reward)  UPDATED
### Original post:
We need a professional business plan (BP) written for a new bitcoin mining operation. We have done BP before, but not for this environment, and feel someone that knows bitcoin mining could write a better product analysis and risk assessment. All the necessary income/expense data can be added by us.At this time we can offer BTC1.00 for the winning BP paid to your bitcoin wallet.If you feel you have the skill set to write this, please lets get started as the timeline is critical.I will post the winning business plan to ensure fairness.Thank you for your time.

",[]
13495,"Date: 2016-03
Topic: finding a block
### Original post:
If you find a block with solo cgminer would you only know by your btc balance?Would it be saved in a log or anything within cgminer? Or do you just view the blockchain block?

### Reply 1:
Whatever you set up address for payout or address as username to start up the mining work,you will get the block reward (i.e 25BTC).It will be shown in blockchain.To see in blockchain go to <link> .Blockchain itself keeps a log in that page or you can check up on the bitcoin address where you will receive the block reward like New Coins Generated => {Bitcoin Address}

### Reply 2:
the software will simply say ""BLOCK!!!"" and you will know it, or you will simply see an incoming transaction of 25 btc to your core wallet, because you need to leave it open while mining in solo

### Reply 3:
You will also have a ""Best Share:"" equal to or greater than current difficulty.

### Reply 4:
I'm not using core wallet to solo but I understand what you are saying.

### Reply 5:
Why? Mainline CGMiner tells you everything you need to know without the risk of downloading trojans from strange places.

### Reply 6:
You have to be quick seeing a Block Found! message in between the other messages concerning the mining. Once you close the Miner program, there should be a summary of the mining values and the number of blocks found (if any). Good Luck, and keep us posted.

### Reply 7:
As long as you are only bitcoin mining and not messing with multiple sha256 alt-coins, the API has a correct count of the number of blocks you found.See the API-READMEIf you are using non-master cgminer clones where they've fuxored that, some of them (Bitmain for sure) screw up the block count, so it may not be correct.

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    ""hardware_name"": ""Miner program"",
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    ""hardware_name"": ""non-master cgminer clones"",
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20695,"Date: 2015-10
Topic: Newbie Question
### Original post:
Hi, so I'm just curious as to how often are blocks ""mined"" is it like after a certain amount of transaction, or time, or just whenever a miner finds the solution? And each block thats mined the miner, or pool, get 25 bitcoins + transaction fees? Lastly, what is this halving that people are talking about?

### Reply 1:
You really should have titled your question better. ""Newbie Question"" has nothing to do with your question on mining frequency. Anyway, blocks are mined every 10 minutes or so, give or take a couple of minutes. This is by design. It will always be every 10 minutes or so until the end of time. The person, or pool, that finds the block reaps the coins and the fees. Both of them. The frequency that blocks are mined (and your chances) are controlled like a lottery. You could mine a block every 1 minute for the next 10 minutes, then not mine another for the next year, though both of those scenarios are very improbable. Imagine yourself pulling scratch-off tickets at a rate of one every second and scratching to see if you won $1000. The more you scratch, the more chances you have to win. Hashes are tickets and your miner (ASIC miners at this point) are your hand pulling the tickets and scratching. Block halving happens every 210,000 blocks, or about every 4 years or so. It will continue to do so until all 21 million bitcoins are mined and then all you get for mining is the transaction fees, which will hopefully (barring a bunch of idiots running the circus) be at least as valuable as the<rest of post truncated>

### Reply 2:
I'll answer your question more directly. Difficulty is set compared to the network hashrate to target an average of 10 minutes. You can get a few blocks in a few seconds or none for an hour.That's what the difficulty is all about. There is no ""progress"" toward a block, either you found one or you did not and you draw the lottery x time per second and that is your hashrate.

### Reply 3:
The ing will come around Jun or JulyCoins given will drop from 25 to 12.5To win your miner has a set of ""magic dice"". they can spin 0 to <truncated> actually higher but I put a really big number to give you an idea.to spin a winner you need over 60,883,825,480 this is 60 billion + any number under is a loser any number over is a winner.Not sure what happens with a perfect match.this number can be found below.<link> number is adjusted every 2016 blocks up or down based on speed.past history belowDifficulty HistoryDate Difficulty ChangeHash RateOct 15 <truncated> GH/sOct 01 <truncated> GH/sSep 17 <truncated> GH/sSep 04 <truncated> GH/sAug 22 <truncated> GH/sAug 08 <truncated> GH/sJul 25 <truncated> GH/sJul 11 <truncated> GH/sJun 28 <truncated> GH/sJun 14 <truncated> GH/sMay 31 <truncated> GH/sMay 17 <truncated> GH/sMay 03 <truncated> GH/sApr 19 <truncated> GH/sApr 05 <truncated> GH/sMar 22 <truncated> GH/sMar 08 <truncated> GH/sFeb 22 <truncated> GH/sFeb 09 <truncated> GH/sJan 27 <truncated> GH/sJan 12 <truncated> GH/sDec 30 <truncated> GH/sDec 17 <truncated> GH/sDec 02 <truncated> GH/sNov 18 <truncated> GH/sNov 05 <truncated> GH/sOct 23 <truncated> GH/sOct 09 <truncated> GH/sSep 25 <rest of post truncated>

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13428,"Date: 2015-10
Topic: Cronsjob error!!
### Original post:
I get this error after running <truncated> Please be aware: This cron is deprecated and will be removed. Please read: <link> Notice: Undefined offset: 1 in <truncated> on line 20Howto solve this above?

",[]
20816,"Date: 2015-12
Topic: Mining Home Network security issues
### Original post:
I want to start a rig with an S5, but my dad wants to know more about security issues with our home network. Does setting up a rig risk people getting access to our home network through the miner? And does the block have to get sent by a server that has access to our network or is it just being sent to the S5? I need to know more before I start.

### Reply 1:
I huh.. What? Everything goes through your router, so its your router's security you should be looking at. The miner is behind your router, just like your computer, so its not any different than any other device. The miner can't connect access your stuff unless you hack it in and even then, its not like its RDP. There's very limited access through the webgui.And all the work your S5 will produce will be sent to a pool (hopefully). No block is sent to a S5 or anything of the sort in the first place.If you come up with direct questions i or someone else will give you a direct answer.Also Stock S5 is LOUD.

### Reply 2:
for all intents and purposes no the antminer s5 presents no extra security risk than you already had. I had a bunch extra written about firewalls but decided not to post. If you have any additional questions please post.

### Reply 3:
Seems like no one didnt get your question yet. I dont see why you are concerned about your home network security at home. Since most of the miners are only interested in harvesting more n more bitcoins no one didnt even think for a sec if the mining hardware compromises their own network security.

### Reply 4:
If you are pool mining. No security issues. You are opening an outbound connection to a pool for getting and submitted work.If you are solo mining to your own Bitcoin node, that is a different story.Just as an FYI. I am a Senior Network Security Engineer. I am keeping my answer simple for your sake.

### Reply 5:
Because its not impossible, if he solo mine on his own node and he does not configure it properly. Its possible to allow incoming connection to actually run it like a Node. At that point people can get his IP and try to find a way in.As such, it is possible to improve the security against such attack.If he instead mine to let say ck's solo pool, then his IP is only revealed to ck, it would make it hard to know where the miners are in the first place.The whole thing is so unlikely, to be honest. The one time i saw it happen, someone left his network wide open (no router password for dropbear port) and got some BTC stolen(also no password encrypted wallet). That would of been avoided if he changed his dropbear port and put a strong password(a weak one would of probably worked fine too) or just disabled it. Or you know, put a password on his wallet, the theft attempt would of been thwarted there, the attacker would need to be crafty to get the BTC out of that person's wallet.This tends to happen to people that think ""Can't happen to me.""

### Reply 6:
No password encrypted wallet for a miner was asking like ""shut up and take my money!""

### Reply 7:
Yes, and he probably went around on IRC telling people ""Hah this shit will never happened to me. I dont even need to lock my shit"". Definitively the best way to get hacked; Go blab on public IRC crypto channel. That person was rather vocal, so i would not be surprised if thats what happened in the untold part of his story.

### Reply 8:
Thanks guys, starting my rig after Christmas! Btw, the S5 would go in my furnace room and no one sleeps in the basement so it shouldn't be a big deal. Appreciate the help guys.

### Reply 9:
I doubt 1 S5 will make a huge difference, they do run hot and loud. It's just their nature. But if you grow I'm not sure if furnace room is greatest of room's.Depends on how well it's insulated i guess. But normally with gear you keep it far away from sources of heat. But again since talking 1.. can get away with it most likely.

### Reply 10:
Guess it depend how much air the furnace room move. If its stale, it would be very bad for miners.Just a handful of S4 is like having a couples of oven turned on 24/7 with their oven door opened.

### Reply 11:
Very true it would depend I'm just basing it off my furnace room. (I have never ran miners in it). But if his has bad isulation and get's hot... yes it is not good.But hes also using only one miner so not thousands of watts. A handful of S4's is a lot more watts then 1 S5. So had to tell. But my first choice would not be a furnace room either.

### Reply 12:
Ok so where would be the best place to put one. I live in S MN, so it gets pretty cold in the winter. Would a garage or shed with power and internet work?

### Reply 13:
Yes, depending on how much hardware you put in there. A miner or two, no problem. If you put more, it does not matter if its summer or winter, you will need airflow into and out of whatever room you put it in.If you took the output of the miner and put it in your heating vents, you could he<rest of thread truncated>
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23879,"Date: 2022-02
Topic: ASICRepairsUS East TN Repair Facility
### Original post:
New Repair facility located in East Tennessee. Quick turnaround time, ticket system to track your <truncated>

### Reply 1:
Ya, your going to need to prove you repairs ASICs. Too many scams.

### Reply 2:
There is a dedicated thread for this, it's pinned at the top > <link> am not saying you can't have your own topic, but I am afraid the way you put it makes it look more like a services-related subject which will probably be moved to another forum section.With that said, it will take you a lot more than just posting your website for anyone to trust you, check the link above to get a better clue of things work around here.

",[]
22389,"Date: 2018-02
Topic: Antminer S9 Cooling - Refrigerator  / Cabinet
### Original post:
Hi,Live in Texas. Have 6 S9's in my garage, not a problem now, as it is still ""winter"", temps are 30 - 60 F. Getting Warmer very soon, summer temps will be 80 - 100 in my garage, which 6 S9 will overheat in no time.I tried to find hosting up north (Washington State / Canada), everyone is either full or price is too expensive ($ 170 per unit). $ 170 might not be that bad, but try find open facility now is the issue. My electricity costs are 10 cents per Kwh. I do have the electricity to run (have three 20 amp breakers in my panel for miners and miners are close to my panel). They are noisy, and generate lots of heat, so here is my idea.1. Buy a used refrigerator / freezer from auction that came from failed restaurants. Non working freezer I think I can buy for under $ 50. Example:<link> will use it as my cabinet to house my miners. I know you cannot get a refrigerator / freezer to cool these units, I will buy it non working to get it cheap, and use the cabinet to store the units and bring the sound down.2. Cut some holes in the bottom / top / sides and (a) have cool air brought in from either the inside of my house via ducting and an inline fan, or (b) have a portable air conditione<rest of post truncated>

### Reply 1:
I am in Texas as well and have 3 Antminers and 2 Pangolin M3s which I think equal about 75 S9s Anyway you're thinking about cooling incorrectly, what you need to think about is removing the waste heat. I made a thread called ducting check it out. The goal is to simply get the heat out of the garage. By doing just that I reduced the temp approx 30 degrees. Even the brutally hot M3s are staying pretty even.Also your CFM requirements are waaaaaay too low. Figure around 225 CFM per miner! S9s are around 5000 BTU each, these M3s are over 6000.Garage temp at the time of this pic was ~ 75 deg F. If I had a fresh air source it would be even better and possibly help cool that HotFlash M3... But this is just a temp setup until I find a suitable building.<link> they all are in their temp duct arrangement<link> note: This post was edited by frodocooper to trim the quote from mineintx and to remove inline image tags.)

### Reply 2:
Thank you for the reply. I will PM you, I am in the DFW area.. I did look at your post on ducting - and yes I will take your advice and first focus on the heat waste issue - getting the hot air that these units kick out somewhere else.. I will do that first, and then address the incoming cool air issue when needed, which is likely 2 months away..But other main issue I want to address is the noise. Of course my bedroom wall where my bed is against, the garage is on the other end. With sheetrock in between I can still hear the humming of the miners (even with some ducting). 2 miners was not bad, 6 is a little noisy..So I am thinking of putting them in an enclosed cabinet for noise, which still having adequate in and out air flow. Anyone try this?

### Reply 3:
There are a lot of ways to skin this cat, but a fridge is not going to work due to the CFM that runs through these things. Best to vent the miners out of the garage or building and put in some extra A/C. One option for you might be to build a shed or buy a used shipping container to house the units. Vent them outside and install some good A/C. I have mine in a small ""mother-in-law"" type house with a couple portable 14,000 BTU A/C units installed with miner exhaust being vented through the floor to the outside of the building. I am in the South as well, and this solution works fine for me. If I did not already have the little house, I would buy a used shipping container - they are cheap, well constructed, secure, and easy to modify for special projects like this.

### Reply 4:
Yes, shipping container is definitely a possibility. Insulated properly and with really strong airflow even in the South I believe it would be a great hosting space. But back to the initial question, I think I would look at simply insulating the walls between the garage and bedroom better. Heck even putting up cheapo Harbor Freight moving blankets on the garage side would most likely reduce the noise quite a bit.I am lucky, the way my house is built the guest bedroom is against the garage wall and is very far back. Standing at the garage entrance door, but with the door closed is about 60dB. That's really the only portion of the house you can hear the miners.

### Reply 5:
There are lots of ways to deal with the sound and since you are working with a garage, you can probably find a solution that buts adds insulation and decreases sound at the same time. Here are a few ideas: <link> if you vent your miner exhaust to the outside, that will reduce the noise (and heat) substantially inside the garage. The downside to that is that the noise goes outside, but is dampened by the exhaust tubing. It might annoy your neighbors. In my case, the outside sound is similar to an ind<rest of thread truncated>
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17046,"Date: 2012-02
Topic: GPUs are used to 90%
### Original post:
try 11.12, not 12.1

### Reply 1:
FWIW, I also had low gpu usage while using 12.1 + 2.1 SDK, someone mentioned 11.12 so I tried it and wala 99% gpu.

### Reply 2:
depending on what miner you use, you will need to have another sdk installed along side of 2.1 for your miners to see 2.1; they probably look for the sdk in a specific path and 2.1 uses a different path than 2.4-2.6 which is why the two can be installed on the same system, but 2.1 has to be installed second since some people say installed 2.1 first and something newer second will uninstall 2.1.otherwise I don't know, your system is bugged.

### Reply 3:
If you change your sdks, you need to delete the compiled .cl files. That will cause things to fail if you don't.

### Reply 4:
My bad, when I was skimming the post about you installing 12.1, I assumed the full suite. I'm glad its better for you.

","[
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    ""hardware_name"": ""SDK 2.1"",
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  },
  {
    ""hardware_name"": ""SDK 2.4-2.6"",
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20297,"Date: 2015-03
Topic: NIC CARD not working?!!! How to connect via Serial Port
### Original post:
I need to connect to the SP20 via the serial port because the NIC card is not working. When booting up, the yellow light comes on, but then goes off and the fan stays at high speed. The GREEN light on the NIC stays solid, even with nothing plugged in.Please help!

### Reply 1:
Have you looked at the recovery sd option? I have not done it myself on a SP20 but you might look at it and not a usb connection.

### Reply 2:
Can someone answer the question?

### Reply 3:
That's mean it's not possible. Most of controller design is strip down version of linux small box which contain only hardware required for mining.

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  },
  {
    ""hardware_name"": ""recovery sd"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""usb connection"",
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9897,"Date: 2016-07
Topic: 2x S7 before/after halving thoughts
### Original post:
So I have 2x S7 mining and prior to the halving they were generating about .25 BTC every 10 days or so for the last month -- now post halving the estimated payout for them to generate the same .25 BTC is now 22 days.Even given a scenario of free power, is it really worth it at this point?It seems to me it would almost be worth it to sell the S7s right now and switch to an alt coin as there are some out there that would generate more BTC for the same power in a given time frame.Anyone else having the same or similar thoughts -- or is there some piece of information that I'm missing?I read speculation before the halving that people expect the difficulty to drop post halving, does anyone think this will still occur? The only way I see diff dropping is if miners pull out and global hash rate drops.

### Reply 1:
If you want to sell your S7 please let me know.Reply here or PM price and other details.Cheers

### Reply 2:
I don't see diff dropping any time soon. Most miners have anticipated the halving and were preparing. Anything prior to S7 are obsolete at this.point, S7 and S9 are obviously fine. As S9 replaces S7 and previous model miners, diff will jump. Funny Bitmain has not halved the price of S9 miner. They must think there are enough fools who's stupid to buy their over priced house burners.

### Reply 3:
Really

### Reply 4:
If you have free power yes it would be worth it to mine with. They are still good miner's that did not change over having. You just want to buy at a price over time you will ROI which with free electricity... should be not to hard to do.But if I had free electricity I would not have a problem mining 1 gen old gear S7 or Avalon 6's. But I need more efficiency as I pay for electricity at a decent price.

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    ""hardware_name"": ""Avalon 6"",
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3900,"Date: 2015-12
Topic: [IN STOCK]] Gridseed Dual Asic Round 2 -- lower pricing
### Original post:
didn't expect I'd have to wire the <truncated> (sleeve) barrelplug = -V = black or white wireinside barrelplug = +V = red wireis that correct?do you have to solder those connections + shrinkplastic ?

### Reply 1:
correct.No need to solder, just a twist up to attach and reattach the plastic sleeve. thats how we've got them anyway

### Reply 2:
still havent recieved mine :-( ,tracking shows it's in the country on saturday, guessing customs are playing with it ...

### Reply 3:
Have you tried tracking it with your country postal tracking, not Royal Mail, should give you clearer info.

### Reply 4:
Got mine totday perfect thanks!

### Reply 5:
Hi Studio1one, guess i'll have to wait one more night.Cant track them with my country postal service...

### Reply 6:
If you are outside EU it is probably delayed in customs for a few days

### Reply 7:
Got mine yesterday.Runnin like hell.Thx.Nice Work.Btw. The parcel was ripped off at one side.Could see the usb device. Lucky for me, no one took it.

### Reply 8:
Too bad the usb hub was dead when it arrived.The wiring takes a long time!After i have tasted all greedseeders, i will leave my thrust for you!

### Reply 9:
did you use the wire included in te packge?It's so big I can't get it through the tiny holes in the barrelplugs.

### Reply 10:
yeah just twisted it up tight.

### Reply 11:
Yep well done witch this BTC market right person and right job.Order on time perfect working miner more order be done Tnx

### Reply 12:
no problem, happy to be of service.

### Reply 13:
Hi Studio1one, recieved mine today.thanks again.

### Reply 14:
no problem, happy to be of service.

### Reply 15:
hello got mine 2 thx

### Reply 16:
Recieved the missing power supplies today.As soon as I get the new miner, you will get my trust rating.I'm very satisfied with your service! (:

### Reply 17:
Hi Studio1one,I received my Gridseeds today (Greece).Everything works perfect. Thank you very much.Another happy miner !!!

### Reply 18:
Good stuffWe have around 70 available for same day shipping at the moment.

### Reply 19:
The final miner arrived and works fine. (:Thank you very much! Trust rating incoming.

### Reply 20:
only 18 left on this batch now.

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9182,"Date: 2015-06
Topic: I will be reviewing a new server psu+ breakout board. Results and photos
### Original post:
Here is my guide line result for this testing an evga 1600 watt p2 platinum on a 120 volt 20 amp close to the circuit panel 10 gauge dedicated socket.All tests will use this socket and will use 2 avalon 4's a silver model and a black model 1 rasp pi model b and a fan.Plat Evga 1600 p2 comparsionGold evga 1300 g2 comparison This will be the psu <link> platinum kit... will include the psu and a new breakout board. run 2 sp20 under clock or 1 at 1350ghHere are results for the Intel psu. The intel is very close in power use to the high end evga 1600 watt p2 model if you run it at 800 watts it is pretty quiet so it could stand alone with 1 sp20e at about 1300- 1350 gh speed.the intel is 1000 watt plat at 120 volt and 1200 watt plat at 240 <truncated> to followclose up of the hp . The hp is rated 850 watts at 120 and 1000 watts at 240. My 120 volt results are good due to the dedicated socket 2 feet from circuit <truncated> up is the dell later today.the dell is 750 wattI will compare it using the evga 1600 p2 a 1600 watt psu plat psu run avalon 4.1I will compare it using the evga 1300 g2 a 1300 watt gold psu run 2 avalon 4.1I will compare it using the seasonic 1200 watt psu plat rating r<rest of post truncated>

### Reply 1:
All results in. Please see first post<link>

### Reply 2:
Impressive review once again.Do you happen to have prices for what the kits go for?

### Reply 3:
Pete from gigampz.com has not posted prices or sales links.The plat intel is a very nice unit.I went to his site he has the hps in stock<link> the hp break out board 39.99<link> the hp psu 24.99<link> pcie 4 wire pack 15.99I would love to get the plats.One thing the hps is decent tested well went way over 850 watt rating for 120 volt.The hp is like a gold looks like 80 bucks for the 3 parts. He must be away as I don't see any info or pm's from him.. I am going to find his email and shoot him an email tonight on the plats.

### Reply 4:
I do like the plat psu from intel. I placed an order today for a set of cables.15.99 and paid with paypal.The bronze dell------I packed with a 4 cable set and included it with an sp20The gold hp----------I packed with a 4 cable set and included it with an sp20e the plat intel I Kept and ordered a set of cables for it.<link> a nice plat psu that will run my last sp20e.

### Reply 5:
Hey guys sorry I haven't been paying attention to the forums for the past couple days. Thanks philipma1957 for the awesome through review. We have 100 of the platinum PSUs in stock we are working on final pricing and adding them to the gigampz.com store now they should be up some time tomorrow. I'll post here again when sales start.

### Reply 6:
Looking forward to it, thanks.

### Reply 7:
Nice to hear. They are very nice for running a sp20 at about 1250gh.

### Reply 8:
The 1200 Watt 80Plus Platinum kit is up on our site. Price is $147.35 including shipping. We also have a kit option for the 850 / 1000 Watt for $54.76 including shipping.<link> / comment / feedback is always welcome. Thanks!-Pete

### Reply 9:
I sent a pm about the plat intel kit.

### Reply 10:
Now as a reminder I was given my kits to run the review so my cost was 0.00 for the dell the hp the intel.I sold off the dell and the hp to go with 2 sp20e's.I kept the Intel and order more wires for it since I gave the test wires with the sale.Having had both of these kits in my home and 20 or 30 other psu's in my home.The intel kit is better quality and is more efficient. The better Quality is at a higher price.The hp kit at 55 bucks is a screaming good deal, I was able to get it to do over 850 watts on a 120 volt line. I do not of any better psu for this price point and wattage.If you run it on 120 volt and draw 700 watts (think s-5) it won't be very loud and it is a really nice psu . It can also run an under clocked sp20 very well. The kit has:4 pcie cables1 psu1 breakout board1 14 gauge power cordAt pete's price point of 54.76 for a kit it is a good deal<link>

### Reply 11:
Thanks, we think so too! All our prices include shipping too so there aren't any hidden costs what you see is our bottom line price.

### Reply 12:
Yeah I was not sure about the shipping ,but with free shipping and paypal payments available the HP is really good for more then one application of miner.It did more then 850 watts with a 120volt power source. It did 700 watts quietly (relative say 53db and not a vicious sounding pitch).

### Reply 13:
bumped and locked. these will all be next to each other and easy to find. they will drop off the front page pretty fast.

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    ""hardware_name"": ""gold hp"",
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    ""hardware_name"": ""platinum PSUs"",
    ""hardware_is_owned"": false
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9254,"Date: 2015-08
Topic: Sudden interest in FPGA's
### Original post:
Why the sudden interest in FPGA's?I have noticed a few threads popping up the last few days asking for them, do they know something we dont?A new coin about to be announced maybe with a new algorithm -<link>

### Reply 1:
Just a guess, maybe they're trying to implement Ethash on FPGA<link> I said, just a guess.

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3836,"Date: 2015-03
Topic: In conversations with a wind power vendor
### Original post:
Anyone have any off the cuff pricing for 50KW and 39KW wind towers ? I have access to a location in the midwest where windpower is growing fast , I just need to find warehouse in a properly zoned location. I asked for a qooute on the wind turbines and have call scheduled later this week with the vendor what do you guys think is this viable ?According to the chart these towers can generate 200KWH per year (39KW towers) at average wind speeds. I know they do not pay for themselves infor five years or so but so its a long term thing but a group buy could solve this issue. All investors would get free power basically and just pay formaintenance costs any extra power could be sold back to the power company or used of other purposes.

","[
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20762,"Date: 2015-11
Topic: bfgminer: Inappropriate ioctl for device
### Original post:
I have a brand new Avalon Nano 3 usb mining stick.I've ser up p2pool (I don't think there's a problem with that)I'm trying to start bfgminer with bfgminer -S <truncated> -o <truncated> -O userxxx:passxxx --set-device ICA:baud=115200 --set-device ICA:reopen=timeout --set-device ICA:work_division=1 --set-device ICA:fpga_count=1 --set-device <truncated> --set-device ICA:timing=0.22 <truncated> bfminer finds <truncated> (iv'e set group to lp, same result anyhow if i run bfgminer as root)bfminer somehow does not connect properly to the miner and reports:[2015-11-21 15:29:26] <truncated> tcflush failed: Inappropriate ioctl for device

### Reply 1:
tcflush sounds like a connection problem to me.Is there a difference between the icarus parameters needed for older and newer avalon nano?I have the Avalon3 Nano, rev. 2.0Anyone else having this problem?

### Reply 2:
if I leave out the timeout parameter <truncated> the error output becomes: [2015-11-22 14:17:14] <truncated> tcgetattr failed: Inappropriate ioctl for device[2015-11-22 14:17:14] <truncated> tcflush failed: Inappropriate ioctl for device[2015-11-22 14:17:14] <truncated> tcgetattr failed: Inappropriate ioctl for device[2015-11-22 14:17:14] <truncated> tcflush failed: Inappropriate ioctl for device[2015-11-22 14:17:15] <truncated> tcgetattr failed: Inappropriate ioctl for device[2015-11-22 14:17:15] <truncated> tcflush failed: Inappropriate ioctl for device[2015-11-22 14:17:16] <truncated> tcgetattr failed: Inappropriate ioctl for device[2015-11-22 14:17:16] <truncated> tcflush failed: Inappropriate ioctl for device[2015-11-22 14:17:17] <truncated> tcgetattr failed: Inappropriate ioctl for device[2015-11-22 14:17:17] <truncated> tcflush failed: Inappropriate ioctl for device[2015-11-22 14:17:17] <truncated> tcgetattr failed: Inappropriate ioctl for deviceThis indicates an error in asynchronous serial communication. i.e. In the usb connection.

### Reply 3:
Use the official support thread:<link>

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]"
4151,"Date: 2012-08
Topic: ZTEX infrared images
### Original post:
I took a couple of images of my ZTEX 1.15x. The images were taken with FLIR Systems InfraCam.The ZTEX-board in question had an extra heat sink in the bottom and bit more powerful non-stock fan; SUNON MB40201V2-0000-A99 running at 12V. Board had been mining for a couple of hours with 1.26V on VCCINT. Ambient temperature was about 23C, air-conditioned room.There is really no point in this, I just wanted to see how hot the board was running and I thought to share these. <link> <link> <link> <link> images of the board are available for example on the ZTEX homepage.The component radiating the most heat (about 70C) is MOSFET IRF8714PbF next to the buck regulator AOZ1025D. The MOSFET is rated -55C to +150C so it should be fine, but on a long run it might be a good idea to perhaps use a small heat sink for the sake of the other components next to the MOSFET...

### Reply 1:
Yup agreed, there are some really hot and tiny spots.

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    ""hardware_name"": ""SUNON MB40201V2-0000-A99"",
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    ""hardware_name"": ""MOSFET IRF8714PbF"",
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    ""hardware_name"": ""buck regulator AOZ1025D"",
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]"
23417,"Date: 2021-02
Topic: Dragonmint Dashboard Cannot Update Pools
### Original post:
Every time I update the pools through the DragonMint dashboard the system resets and shuts down. I check the firmware area and it says it is up to date.How can I mine if I can never put my <truncated> in properly?

### Reply 1:
Try other browsers or in incognito mode.Let me ask if what the exact unit model of your miner? Is it the Dragonmint T1?If it's T1 try to factory reset the miner on the dashboard or by holding reset/IP button for 15 sec then try to set the pool again make sure no extra spaces.If not work try to flash it you can find the firmware from this link below.- <link> flash it with BraiinsOS through SSH follow the guide from this post <link>

### Reply 2:
I don't own any Dragonmint, although I have set up some for others, I can tell you that these gears are a piece of ****, you going to need a lot of luck to get them to work. What you describing seems to me like a hacked or defective control board, I doubt that the normal reset method will work, Halong is long gone as far as I know and so that support/firmware options are very limited if any, I would take the short route and SDcard a bootable version of BraiinOs.

### Reply 3:
It is a Dragonmint T1I have tried the reset button but same thing happens when trying the pool <truncated> I am a windows/gui guy and the BrainsOS flashing thing is going to be agonizing for me.It's the 21st century. Why are we still doing this command line crap?

### Reply 4:
When you have no other options you are forced to use whatever tools at your disposal, you bought a shitty mining gear before doing your own research, that was a mistake that you have to accept.There is a bootable version of Braiins, you could try that and see if it fixes your problem, later on, you can flash the firmware if you are happy with that, if you face any difficulties in the process, you can always ask in BraiinOs topic, someone should be able to help you.

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13404,"Date: 2015-06
Topic: Antminer U3 Stops Hashing
### Original post:
Hello! My Antminer U3 Will Stop Hashing on its own and I need to unhook and replug in the USB cable and it starts Hashing Again. I am running this on a Windows 7 ""64"" machine with Cgminer 4.9.0!~ TY!

### Reply 1:
Lot's of things it could be....Could be your usb cableCould be your machines power settingsCould be a network errorCould be a USB hubOver all the poeple not liking their U3 are very vocal that it is a crap machine. The people not having an issue don't tend to jump on a web forum and post. Mine stops working 100% of the time when my wife disconnects the usb cable and takes the laptop to another part of the house. Or when the windows 10 table losses it's connection to the tablet dock that the usb devices are plugged into. Both of those are known in the computer world as an ID-10-T error. Or a short between the keyboard and chair. I typically run it on either a Windows 8.1 laptop or Windows 10 tablet with a gridseed 5 chip puck also running in another window. Try eliminating the easy things first. - Remove Wife- Replace USB cable

### Reply 2:
The power brick sux.... and the U3 has no temperature information so you can't tell if it's overheating.I used an IR gun on mine while we were messing around with tying to get them working.The U3 was showing 40C on the heat sink ... and the plug pack was showing 50CSo I got rid of the plug pack and used an expensive high quality PSU while testing it.I've not run them since then coz they use WAY too much power for the hash rate - even with the very good PSU I was using - Seasonic Platinum 1200W

### Reply 3:
The PSU I am using the one it came with. I was going to hook it up to a 30 Amp PSU but That is the other problem I am having. Was Told to Post that in a Different Cat. That is a scryt Fury Problem, on the same computer. Think its fubar. The fury uses that driver that gets replaced. The fury tries to run as a U3. So have it hooked up to my desktop on stock PSU

### Reply 4:
This is a commonly occurring issue using CGMiner 4.9.0 and the Antminer U3. Sadly I could only get my Antminer U3's to run well by using CGMiner 4.9.0. So it's either a very persistent problem with the Antminer U3's in general or it's a software issue.You can check out the main Antminer U3 support thread to read about how most people's units cut out every 24 hours like clockwork. Not that it helps, but maybe someone will eventually figure out a fix. I know I couldn't...

### Reply 5:
I cut the cord and put it on a 30 amp psu, hashing fine now, been a few days so fare. I have been using CGminer 4.9.0 from the start.

### Reply 6:
Try the latest cgminer 4.9.2 there's a few changes in there for U3.It won't help the crappy PSU problems, but it's worth seeing if it helps anyway

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    ""hardware_name"": ""Windows 7 \""64\"" machine"",
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    ""hardware_name"": ""Windows 10 tablet"",
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  {
    ""hardware_name"": ""Windows 8.1 laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""gridseed 5 chip puck"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power brick"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Seasonic Platinum 1200W PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""30 Amp PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""stock PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGMiner 4.9.0"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGMiner 4.9.2"",
    ""hardware_is_owned"": false
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]"
21489,"Date: 2017-08
Topic: New Miner S7 w/ raspberry pi
### Original post:
Hello,I am looking to get into mining bitcoin.I have a raspberry pi 3 now.Power is freeData is $10 USD/GBLooking to invest ~$700.Would getting a S7 with a PSU be a good option or what setup do you guys recommend?How hard is this to set up?

### Reply 1:
All bitmain miners come with their own controller. The only miner that would make use of that RPi is the Avalon 741

### Reply 2:
Since electricity is free, the key factor to look at is H/s/$. It used to be that S3 and S5 were in the sweet spot, but now I suspect S7 would probably be as well and would be a great choice if noise is not much of a problem. For a PSU, look no further than surplus server PSUs.On your budget, you might be able to get two S7s, but I would recommend starting with one so you'll get some experience with mining before scaling up. Also don't overlook altcoin mining.

### Reply 3:
Thanks guys.What I did was order an s3+ and a PSU. I want to get my feet wet, figure out how to run this and connect to a pool and get going.I have the PSU now, the S3+ should arrive in a day or 2.Noise is an issue, but I think it can be managed by keeping the unit in a sound dampening box.I have a bitcoin wallet from bitaddress.org and set up an account with coinbase.com and gdax.comI am 100% interested in mining altcoins, but want to learn with something simple and close to plug and play to start with. I have been watching allot of videos and reading but still have allot to learn!On another note, I want some excuse to use the raspberry Pi so I need to figure out what to do with that thing!

### Reply 4:
S3 should be very quiet. It was once popular for college students living in dorms.

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  },
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""Avalon 741"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S3"",
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  },
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    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s3+"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
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]"
14607,"Date: 2012-09
Topic: pushpool - open source pool software
### Original post:
My thread was exactly for this, but oh well.When users earn btc...where to they come from when they request payout? If it's a wait for 100 blocks confirmation thing or when it's instant.How does one define the formula where the earned 50btc are split between users?

### Reply 1:
So, what bitcoin server is the best to be used with pushpool ?I had problems compiling pushpool on Debian, but it's working ok on CentOS.

### Reply 2:
Up to the pool operator. The bitcoin network requires 120 confirmations, before payout of a generated block.Up to the pool operator.

### Reply 3:
There is only one: bitcoind, the official bitcoin client.

### Reply 4:
Then let us start with configuring.Any idea what to write here? Lots of stuff and i am still banging my head on the listening partEDIT: If someone has a working config file, do share.

### Reply 5:
The question is too vague. It depends entirely on your needs.More generally, if you are unaware of the role of bitcoind and how block generation works, you should review many pages on the wiki before running a pool server.

### Reply 6:
Well, for an example.What should be there instead of the question mark?

### Reply 7:
What about this one: <link>

### Reply 8:
I can't say for sure because I only found out about pushpool something like five seconds ago, but I'm guessing you don't have to mess with that line. The question mark is just a marker for a variable in a prepared statement.

### Reply 9:
On bitcoin.conf (where my bitcoind server runs), do I need gen=0 or 1 ?I guess generate should be 0 on server, right ?Because I don't need the server to be generating coins, just 'serving' blocks.Another Q:# ./minerd -a sse2_64 -t 20 --url <link> --userpass <truncated> 16:58:32] JSON-RPC call failed: { ""message"": ""upstream RPC error"", ""code"": -2}[2011-05-17 16:58:32] Long-polling activated for <link> 16:58:32] json_rpc_call failed, retry after 30 secondsAny idea why's that happening ?

### Reply 10:
That's an unmaintained fork of the official client, using a wholly non-standard and <truncated> protocol.

### Reply 11:
Generation on bitcoind should be disabled. That is the slow CPU mining.bitcoind is your upstream. pushpool is having trouble communicating with bitcoind.

### Reply 12:
Ok, I managed to get it to work.Another question, how can I see the total hash per sec that my pool is doing ?bitcoind getinfo returns 0 hashespersec, even when I have two CPU mining @ 40Mhash/s at the same time.

### Reply 13:
I'm curious as to what you intend for the push binary protocol. It hasn't really gotten much traction though it looks like a fine implementation. Since Phoenix now supports MMP (Multiminer), would you consider patches that added MMP support to Pushpool?

### Reply 14:
Look at your share log, for the rate of incoming solutions.

### Reply 15:
Patches welcome, it's an open source project.

### Reply 16:
So let me get this straight...pushpool is simply a backend software that determines how many blocks a certain username has mined and stores that information on a mysql database?Can you show me an example of what the mysql database structure is you are working with in pushpool? What values is it keeping track of exactly?

### Reply 17:
Xf2, i am constantly getting json_rpc_call failed on cpu-miner...i don't have even the slightest idea where the problem is.On pushpool i get an error HTTP request failed: The requested URL returner error 401. I assume 401 means wrong username and pass? But they are correct lol.

### Reply 18:
pushpool proxies between bitcoind and the mining clients. It gets work from bitcoind, and passes it to mining clients. Mining clients submit solutions. pushpool checks the solutions, credits the client if correct, logs the solution, and passes the solution on to bitcoind if it is of sufficient difficulty.These are the two default mysql statements used. You may change these in the config file via ""stmt.pwdb"" and <truncated> DEFAULT_STMT_PWDB \ ""SELECT password FROM pool_worker WHERE username = ?""#define <truncated> \ ""INSERT INTO shares (rem_host, username, our_result, "" \ "" upstream_result, reason, solution) "" \ <truncated> is up to the pool operator to design their own database, and hook it into pushpool. pushpool is intentionally very flexible about this.

### Reply 19:
As I think I read in the other thread, there are no clients for pushpool yet. Is this correct? Or can existing clients be easily modified to connect?Thanks

### Reply 20:
pushpool supports HTTP JSON-RPC, which all mining clients support.Existing clients, and future binary protocol clients, are both supported.

### Reply 21:
Version 0.4.1 released.

### Reply 22:
As difficult as it can be to get the software compiled and working, I'd like to extend my thanks and gratitude to jgarzik for open sourcing pushpool and the cpu miner. You may cop a lot of flack for it not being ""easy"" to setup, but the community is strides furth<rest of thread truncated>
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20541,"Date: 2015-08
Topic: I need help getting my gridseed and my ants mining at the same time.
### Original post:
I am loosing my mind trying to get my gridseed and my ants mining at the same time. I have had people say to use cpuminer for my seed but it stopped when someone told me to use bfgminer for my ants. Anyone know how to get them all running? Also a batch file string would be helpful. I was able to get my gridseed working again on cpuminer.My seed is on com20ant 1 is on com4ant 2 is on com19multiminer throws my antivirus into a fit and my antivirus quarantines it as a trojan identity thief. ThanksJoe

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    ""hardware_name"": ""ants"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cpuminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bfgminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""multiminer"",
    ""hardware_is_owned"": false
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]"
10553,"Date: 2017-09
Topic: Bitmain's Interediary bank?
### Original post:
I'm trying to do a purchase from Bitmain via wire transfer, but in addition to the info they gave.. i need to know their intermediary bank in the US.Any purchasers outside the US know this information?

### Reply 1:
No one outside the US has ordered a miner via wire transfer?

","[
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13619,"Date: 2019-07
Topic: CKPOOL software - Free pool/database/proxy/passthrough/library in c for Linux
### Original post:
About libckpoolWhile not strictly feature complete as a library that can be installed, dynamically linked etc. as per other Linux libraries (yet), libckpool is part of the ckpool suite that is designed to be easily included into other projects without requiring any of the other ckpool code. Any and all functions that can be put into the libckpool.c/h files without being dependent on ckpool are placed there for convenience for others to use in their project, thus benefiting from the many common functions a c/c++ application might need, along with many of the unique ck* functions created for the cgminer and ckpool projects that others might find useful.About ckpmsg:When ckpool is run, a series of unix sockets are created: listener, generator, stratifier, connector usually in /tmp/ckpool (though configurable) and ckdb creates its own listener socket in a ckdb directory. Ckpmsg is a simple application designed to talk locally to the various ckpool/ckdb proceses using the message structure that ckpool expects, usually to the listener socket by default if called with no arguments, looking for ckpool by default but can be aimed at ckproxy (with -p), a named ckpool (with -n) or a user chos<rest of post truncated>

### Reply 1:
CKPOOL configurationAt least one bitcoind (aka btcd) is mandatory in ckpool mode with the minimum requirements of server, rpcuser and rpcpassword set. If no btcd is set up in the configuration, ckpool will look for a running bitcoind on the local machine on the default port 8332 and the username ""user"" and password ""pass"" set up.At the very least you will need the following lines in your bitcoin.conf <truncated> is also recommended you start bitcoind with the -blocknotify feature calling the ckpool notifier as described here: <link> takes a json encoded configuration file in ckpool.conf by default or ckproxy.conf in proxy or passthrough mode unless specified with -c. Sample configurations for ckpool and ckproxy are included with the source. Entries after the valid json are ignored and the space there can be used for comments.Sample ckpool.conf file:Code:{""btcd"" : [ { ""url"" : ""localhost:8332"", ""auth"" : ""user"", ""pass"" : ""pass"", ""notify"" : true }, { ""url"" : ""backup:8332"", ""auth"" : ""user"", ""pass"" : ""pass"", ""notify"" : false }],""btcaddress"" : <truncated> : ""/mined by ck/"",""blockpoll"" : <truncated> : 30,""serverurl"" : <truncated> : 1,""startdiff"" : 42,""logdir"" : ""logs""}Comments from here on<rest of post truncated>

### Reply 2:
Building ckpoolApart from a basic development package installation, as ckpool is mostly hand written without using libraries, it has zero external dependencies. If ckpool is built with ckdb support, only the postgres development library needs to be installed to build it. Most proxy users and simple solo ckpool setups will not require ckdb. (Note that this is only for a tarball release which does not yet exist):sudo apt-get install <truncated> <truncated> with ckdb requires installation of the postgresql development library.sudo apt-get install build-essential <truncated> from git also requires autoconf and automakesudo apt-get install build-essential libpq-dev autoconf automake <truncated> will be built in the src/ subdirectory. Installation is NOT required and ckpool can be run directly from the directoryit's built in but it can be installed with:sudo make install

### Reply 3:
Discussion/Future direction/Feature requestsAt this time the development of the code pool code has been in an extensive testing, debugging and consolidation, having been completed months ago and has had a great deal of real world testing, minting many blocks along the way. The ckdb code is now at completion to the point where public pools can run the code, which is why we're finally able to announce this project. Future features are definitely planned once this consolidation phase is over, and bug <truncated> requests/code pushes are all to be expected. The next major feature we wish to work on is to develop the node code to allow multiple trusted nodes in different locations share data, but this is primarily work to be done at the database level.In the future I wish to develop the concept of sibling pools which will allow collaboration to minimise variance for miners while sharing rewards. The idea is to expand beyond the need for trusted nodes to be able to link up with other pools that can prove to each other the work they are performing towards a common reward. In essence it will involve proof-of-work much like miners do to the pool itself but with auditing of each other's work<rest of post truncated>

### Reply 4:
very interesting concept for multi pools to trust each other... this will change the pooled mining landscape. Bitcoin mining is on the change again, fascinating future ahead for the mining scene.@conman & kanoi; Congrats on the release and thank you for sharing your code w<rest of thread truncated>
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22436,"Date: 2018-03
Topic: Remotely manage multiple Antminer S9 in different locations / networks
### Original post:
Hello, this is my setup:- multiple Antminer S9 running in 4 different cities.- all miners are connected to the internet and working fine.The problem:I dont want to place a computer in every location for separate remote access.The solution?How can I manage all 4 locations from one computer?

### Reply 1:
hey guys i have the same issuei have my s9's at two different locations and some of these miners suddenly become inactivemy problem is that transportation to the locations will vost me as much as the profit so i need a way to remotely access them i heard about raspberry pi and awesome mine but are they legit ?also is it safe security wise to access them remotely ?one idea i had was to buy one of smart wifi that can turn of the sockets remotely but then i will have to buy one for every machines

### Reply 2:
I highly recommend not directly connecting a miner to the internet - always put it behind a firewall and use VPN to the firewall to manage the miners.

### Reply 3:
""Highly recommend not connecting directly to the Interent"" is an understatement. Connect directly to the Internet and you will lose control of your miners in minutes. There, that is more like it.OK, so regarding remotely controlling your miners, I believe Awesome Miner <truncated> will allow for that. I don't use that feature, but do control over 100 miners with AM, and love it. Patrik, the developer, is great and normally responds to questions within 24 hours.

### Reply 4:
Find out if each location support VPN connectivity. Then simply VPN in and manage each miner as if it was on the same network. No PCs needed...

### Reply 5:
How about a $35 RPi and some free software at each location?<link> your own VPN server at each location so you can connect remotely to each network.

### Reply 6:
I was hoping the network gear at the remote sites already had VPN capability, but if not that's an awesome (and cheap) idea.

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    ""hardware_name"": ""firewall"",
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    ""hardware_name"": ""VPN"",
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    ""hardware_name"": ""RPi"",
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    ""hardware_name"": ""network gear"",
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16534,"Date: 2023-06
Topic: New to bitcoin mining
### Original post:
Hello,I have an unused 220v 20amp circuit in a data center. It was bundled with other services so it's basically free power.What's the easiest way to get up and running mining bitcoin.Thank you.

### Reply 1:
220V 20A is ... 4400WSo if it's a new miner, that's just one miner.Or 2 older 2kW miners.

### Reply 2:
Sounds too simple OK I'll give it a shot.Thanks!

### Reply 3:
Get a BTC wallet, either using an online web wallet or a hardware wallet like either one from Trezor or Leger.Use it to create a receiving address.Buy an ASIC-based miner, plug it in and point it at a pool setup to use your receiving address...Mine.

### Reply 4:
What are the basic requirements for BTC mining?

### Reply 5:
If you talk about basic requirements it's very simple you need a 220v and ASIC miner and setup them to point on the pool. The normal house outlet amp is around 15amp you can run only one miner per outlet.I would suggest you read this thread below.- First time/Small miner reference for getting started.

### Reply 6:
I think not everyone can do bitcoin mining. There are some countries in the world where bitcoin can be mined and those who want to do bitcoin mining in new conditions have to work hard because bitcoin is still illegal in some countries. Bitcoin mining is not possible in new countries, so I think it is legal in countries where you can do it. Otherwise he will face a big loss

### Reply 7:
Resources on the internet will help you 50%, in the process of mining Bitcoin/crypto, there are things you should learn before going any further and doing it.For that this source: Beginners guide to mining Bitcoins: How to mine Bitcoin step by step, can help you to do.About the power or electrical energy needed and spent you can see here: Bitcoin Miner Power Consumption: How Much Energy Do Bitcoin Miners Consume?

### Reply 8:
to start mining bitcoin you must have a personal bitcoin wallet with a tight lock, so as not to be stolen by others, then you must have special software and hardware to mine bitcoin. It is necessary to be able to know what kind of hardware you need.Some of the devices that are quite well known are the Antminer S19 Pro and M30 S++. You can buy these devices through the manufacturer directly or buy them at several e-commerce sites such as eBay and Amazon.

### Reply 9:
It's an obvious scam, stay away from itIt would mean it's 24 times more efficient than the best miner on the market right now, tiwce as cheap and on top of that it somehow manages to mine 4 different coins with different algorithms at the same time.Oh, and their top asic is just a modified image from a rack:

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  {
    ""hardware_name"": ""Trezor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Leger"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19 Pro"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""M30 S++"",
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]"
11253,"Date: 2023-01
Topic: Problem - update to Braiins firmware T17+!?
### Original post:
Hi Guys!I have a T17+ miner that has no hashboards at the moment, they are under repair.I have tried installing Braiins via sd card. At startup, both lights flash in sync, on-off-on-off. After an hour they still do that, have then restarted the miner manually.When I restart the miner without the sd card, first both lights turn on, with constant light. After some minutes they go out completely and stay off.I can log in via the ip address (comes to stock firmware) but when I select the miner status and miner pool/workername tabs it is just a blank page, likewise the first page with miner model, hardware, software it is just blank.Anyone experienced something similar?I goal is to install Braiins on the control board ""hard drive"".

### Reply 1:
Hey You should wait the feedback from Artemis3 here : <link> saw you already post a message in the Braiinos topic, no one is more legit and qualified to answer than Artemis3 for Braiinos realted questions / issues

### Reply 2:
You maybe interrupt the flashing process which is why it ends up a corrupted program/soft bricked and maybe you are using a fake SD card with fake volume take note if you use a fake SD card to flash the unit sometimes it can bricked the control board so make sure that you are using original one and recommended size.If you are using the original one then repeat the procedure redownload the firmware and reformat the SD card then burn it again and flash the unit.Do this 3 times, if it still didn't work for 3rd try then replace the SD card or try other ways to flash the unit.Check the guide here <link>

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16078,"Date: 2021-06
Topic: When to Mine the last Bitcoin.
### Original post:
As a newbie, on my first post I was advised to research about Bitcoin in order to make some quality posts.I made some efforts and I am now confused, that is why I created this topic. 1. I understood that there is a limited supply of BTC at 21million minable.2. As at 2021 that about 18million BTC has already been mined.3. And it is estimated that the last BTC would be mined at about 120yrs from now.Now my confusion. What mathematical analysis proves that BTC created by 2009 with a fixed supply of 21million. From 2009 to 2021 is about 12years, then about 18million has already been mined. Now, the remaining which is about 2million+ will take about 120years to be mined?I need clarification please.

### Reply 1:
the math is the block reward in combination with block reward halving.at the start from first block the reward was 50 bitcoins. then after exactly 210,000 blocks that was automatically cut by half to 25 then after another 210,000 blocks to 12.5 and again to 6.25.this ""halving"" will continue 210,000 blocks without exception until it reaches 0 and that is how the supply cap is enforced to be no more than 21 million.

### Reply 2:
This explains it: <link> Every 210000 blocks, the amount of bitcoins created in a block (the ""subsidy"") is halved untill it eventually reaches 0. At that point, there will be slightly less than 21 million bitcoins and no more will be created.

### Reply 3:
It's called a zeno's paradox.Every 210,000 blocks (approximately 4 years), the block reward will give half of what was giving in the previous 210,000 blocks. The first 210,000 blocks extracted 10,500,000 bitcoins, the next 210,000 gave 5,250,000 bitcoins and it goes and on. The 34th halving will cut the reward from 0.00000001 to 0.00000000 and thus, no other bitcoins.Precisely, there will be 20,999,999.97690000 BTC.

### Reply 4:
Exactly right. SO because the halving occurs every 4 years with the mining becoming harder and harder the system was created such that the total supply of BTC only increases at a certain rate for 4 years and then drops thus controlling the supply. Because the supply is set and it is harder and harder to get more BTC the value should grow in the same linear pattern. This is why it is advised to take advantage of bear markets to stock up until the next bull run where we know BTC would set another record.

### Reply 5:
If you need a well detailed explanation about this, you can read a topic created by <truncated> Network TimeAs the mining reward is reducing after halving, it will take more time to mine certain amount of Bitcoin. <link>

### Reply 6:
Thanks @Darkdays @BrewMaster @BlackHatCoiner @odolvlobo and @Charles-Tim. I am grateful. I am beginning to understand the concept. @Charles-Tim the table you share is cool and easy to understand. But from serial number 26 at the year 2108 downward, there is zero BTC left to mine, yet there is still BTC supply till 2136, what really happened?

### Reply 7:
The ""Left To Mine"" and the second ""Mined BTC"" columns are omitting fractions of a bitcoin. The ""Reward"" column is in satoshis.

### Reply 8:
While that will be the total that will have been created, that will not be the total that will exist.This is because some have been permanently removed from the <truncated> there are some that can be proven to be permanently unspendable, so while they may still ""exist"" it is certain that they are no longer useful.Charles-Tim forgot to expand the width on those columns, so the value you see is rounded to the nearest full bitcoin. Those actual amounts will be fractions of a bitcoin.See here (each ""Reward Era"" is approximately 4 years)

### Reply 9:
Thanks once again @DannyHamilton and @odolvlobo it's clearer now.

### Reply 10:
The actual code is (which is what <truncated> GetBlockSubsidy(int nHeight, const Consensus::Params& consensusParams){ int halvings = nHeight / <truncated> // Force block reward to zero when right shift is undefined. if (halvings >= 64) return 0; CAmount nSubsidy = 50 * COIN; // Subsidy is cut in half every 210,000 blocks which will occur approximately every 4 years. nSubsidy >>= halvings; return nSubsidy;}So at the 64th halving or approx 64x4 years (256 years) the base reward is set to zero.Alas with currently only 8 places (50 BTC = 5000000000 satoshi) it will, however, reach zero earlier, sinceCode:nSubsidy >>= halvings;hits less than 1 satoshi when halvings is 33which represents row 34 in the table further above, since that the second row is the first halving.However, if core decides to extend the places to 16 at some time before that, then the 58th halving (59th row) will be zero.

### Reply 11:
The ""actual code"" is only useful to those that can actually read code (in which case they could have looked it up themselves). If they are asking ""What mathematical analysis proves that BTC created by 2009 with a fixed supply of 21million"", there's a pretty good chance that they want a<rest of thread truncated>
",[]
21220,"Date: 2017-01
Topic: Bitmain R4 Miner not displaying temp for one hashing board
### Original post:
Take a look at the image I've attached. It seems temp is not displaying for one of the hashing boards on my R4. I have tried updating to the latest firmware but no joy. I'm using a Bitmain APW3 PSU. It was working fine then one of the boards stopped hashing and I was only getting 4.3TH/s but after the firmware upgrade both boards work fine but temp doesn't display for 2nd hashing board. Any ideas?<link>

### Reply 1:
Check out this thread. It's specifically for the R4:-<link> question may have already been answered.

### Reply 2:
Thank you

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16965,"Date: 2011-10
Topic: Intermittent ""Connection Problems""
### Original post:
Lately I've been having issues keeping all my miners going reliably. After a variable period of time-sometimes a week, sometimes a few hours-of mining, several workers on each of my rigs at my main location will bomb out. Guiminer reports the issue as ""connection problems."" Oftentimes one or more workers will continue to mine successfully on the affected rigs.The rigs themselves are still connected to the internet, and are accessed remotely via logmein each time this issue occurs. I've only been able to resolve the issue by switching pools thus far. Temps are in the mid 70s for all affected cards, so I'm assuming that isn't an issue. What the heck is my problem?

### Reply 1:
What OS / miners are your rigs running?

### Reply 2:
Windows 7 Home Premium 64-bit, and a mixture of HD 6950s, 6970s, and 5770s. 2 machines are running 4 6970s each, 1 is running 4 6950s, and another 5 are running 3 6950s and 1 5770 each. All have the same intermittent connectivity issue.

### Reply 3:
backing off on your overclock a bit (25-50mhz) may help some, if they're wireless can you try connecting them via wired ethernet?

### Reply 4:
They're all wired cat6e connections, and I finally gave up running them OC'd at all. Oddly enough I didn't have any connection problems when I was overclocking, so maybe that's the answer? Haha.

### Reply 5:
It's usually not a problem on your end, but the pool's.Do you have lots of connections going to the same pool?I had about 12 miners all pointing to the same pool once and 2 of them always had this same issue, after I split them among 2 pools problem went away.

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21184,"Date: 2016-11
Topic: Butterfly Labs Easy Miner Software
### Original post:
So I have a 5 giga hash butterfly labs miner device which when it came out used easy miner. I imagine since the company is now defunct the software is getting dated and there are better options out there. Does anyone have any recommendations on software to use for it? If not does anyone have a link to the latest version of the software I saw a version on cnet but it didn't specify the version.

### Reply 1:
5Ghs? No point mining with that it would earn you more if you sold it as a <truncated> I hope you didn't pay too much for it. You need something in the Ths range of mining power to even start thinking about earning anything nowadays.

### Reply 2:
Does it use USB? Sounds like a smaller version of the lil 10GHs cubes I have. Never could get them to work with Easy Miner nor CGminer. But - pick up a version of BFGminer from around their time. The Driver for most/all BFL miners is built in. Was painless to run my 2 cubes from Feb through Nov 2014 with it.Nowadays that speed is only good for lottery solo mining.

### Reply 3:
The hardware is more defunct than the company,You could try solo mining, if you have free power, otherwise, it makes an okay doorstop.

### Reply 4:
It is connected via usb yep and has an ac adapter. I believe they called it the jalapeno. Works just fine with easy miner and always has but its getting time for my yearly redo of the computer and don't have a back up of the easy miner software installer. So figured it was worth seeing if there was better software for it since the company is defunct. I know its a little dated but I keep it running mainly because it doesn't cost me anything to run it since my home is passive solar so the power cost is negligible. Unfortunately I got it when it first came out with a delay so paid more than I should have given the course of events.A gui interface would be preferred if possible. Any suggestions?

### Reply 5:
BFG is only command line but was painless to find the miners and set the pools info. At least back then CG was utterly confusing.... Just look for versions from around early-late 2014 as they should have the BFL drives active in them. Later versions you may have to select/compile to have them available.

### Reply 6:
I have the FTDI drivers installed will the BFG use those drivers or do I have to do something special?

### Reply 7:
Been almost 3 years since I've ran my BFL cubes so is best to move your questions to the mining >software thread. This is the start of BFG miner part. <link> FTDI is the company that created the original USB/UART chip and standard (which everyone promptly started counterfeiting) I'd think that would do fine.

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16370,"Date: 2022-11
Topic: Wanted - Long Term Rental of Bitcoin Sha256d (Asicboost and non Boost) Machines
### Original post:
Lets get in touch I am in the middle of doing a order through bitmain for their hydro units with the MOQ of 188 units.

### Reply 1:
What do you mean by direct connection? You need access to the miner itself or you would just give us your pool and worker details?I can spare 1ph if1- I get paid in advance.2- The rate is worth it.

### Reply 2:
Will ping you directly. But based on your requirements.1. We can arrange an advance payment arrangement option to build some level of trust but risk burden will need to be shared thereafter.2. Lets talk rate again however as a ballpark we can see somewhere around Bitcoin FPPS + 5% and no fees.

### Reply 3:
let me know your offer , have 105PH in USA availble

### Reply 4:
PM me please, I've also enough capacity in Kazakhstan. Let's discuss the options. Thx.

### Reply 5:
Your settings don't allow a newbie like me to PM you. Do change your settings else you can PM me directly. Thanks!

### Reply 6:
Hi Everyone, Hope it is within topic here.We are looking for bitcoin miners who might want to work out a long term rental of your machines and we will pay above market rate FPPS + x% BTC on a daily basis.We are looking for SHA256d Machines with direct connection and not via proxy/other rental services like Nicehash/MRR etc.This is for a cryptographic project that is slated to last between 6 months to 12 months.Minimum hashrate is 1PH and if anyone knows of any <truncated> people to contact do let me know as well. Super appreciated.I know there will be a lot of trust issues etc thus do contact me and we can discuss how to go forward.Thanks.Edit (19 Nov 22) : There have been a few common questions from this post and placing the common questions here.1. What can I earn on this pool? - It will be FPPS scheme + 5% bonus on top.2. Are there any fees? - No fees or commissions whatsoever.3. Compared to Slushpool how will luck or block finds work into the rewards? - No luck involved, you get paid per share regardless of the pool's luck.4. Is this legit and how do you offer this bonus? - It is real and no shady business, the pool works as a regular BTC mining pool with some hashrate used to <rest of post truncated>

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11767,"Date: 2012-02
Topic: BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards, now 200 MH/s on LX150
### Original post:
A new version of BTCMiner with improved performance (typically 200 MH/s on LX150) has been released on <link> (release number 111214).See the initial post for details.I also updated the prices for USB-FPGA Modules 1.15x, see <link>

### Reply 1:
I got my first ztex board today (yiipee!!!) and got it mining in no time, quite a different experience from the GPU realm Now, I'm using release 111214 but as soon as it tries 200MHz the error rate goes from 0 to ~4.5%, making it fall back to 192MHz where I'm getting less than 180MHs average. Is there anything I can do to improve this or was I just unlucky with the board I received?FYI, I tried both a separate 12v 2A power supply from an external hard drive and have it now connected to the computer PSU. I do get some complains from the usb subsystem but I'm assuming they are <truncated> usb 1-2: new high speed USB device using ehci_hcd and address 3[64742.148040] hub 1-0:1.0: unable to enumerate USB device on port 2[64742.492020] usb 3-2: new full speed USB device using ohci_hcd and address 2[64742.651107] usb 3-2: not running at top speed; connect to a high speed hub[64742.663179] usb 3-2: configuration #1 chosen from 1 <truncated> usb 3-2: USB disconnect, address 2[64764.648024] usb 1-2: new high speed USB device using ehci_hcd and address 4[64764.740034] hub 1-0:1.0: unable to enumerate USB device on port 2[64765.008021] usb 1-2: new high speed USB device using ehci_hcd and addr<rest of post truncated>

### Reply 2:
The 1.15x FPGA boards delivered in January 2012 are a few percent slower (192 MHz or 200 MHZ) than the ones delivered in 2011 (200MHz or <truncated> make sure that you mounted the heat sink using the push pins and thermal grease (do not use the adhesive pad).The FPGA calculates one hash per clock, i.e. the (actual) hash rate always corresponds to the frequency minus error rate.The value ""submitted hash rate"" from the BTCMiner output is empirical and based on the measurement of submitted shares. This value is influenced by statistics and things like network errors (check log for warnings). This value should (if no network errors occur) converge to the (actual) hash rate.

### Reply 3:
Ok, that does explain it. I have mounted the heat sink with the thermal grease (I didn't even notice the pad, to be honest) and, while reading back this thread, decided to take it off, clean it up and apply some of the better thermal grease I use for GPUs. Same difference. It is very stable at 192Mhz, error rate is 0%, and nothing of relevance appears on the logs.Looking at the pool hash rate calculation I see it spiking to 220MHs but more often than note stay below 180MHs. I guess that's just variance at its best, I very satisfied with the ease of use, stability and power dissipation of this little thing. Great job!Now I just need to get more boards asap

### Reply 4:
i hope this does not affect 1.15d boards... Why are they slower ? Different speedgrade or lower quality ?

### Reply 5:
i also find a newer batch of spartan6 FPGAs has a lower quality. lead to a lower stabilized freq.it can't be helped.

### Reply 6:
1.15x FPGA boards shipped in 2011 and all 1.15d FPGA boards have speed grade -3 FPGA's, newer 1.15x FPGA boards have speed grade -N3 FPGA's. According to the specs this is as fast as speed grade 3. The difference is that the memory controller is disabled.AFAIK there are no special production lines for the different speed grades, i.e. the FPGA's get their speed grades after testing:The fastest FPGA's get speed grade -3If the MCB is out of specs (Xilinx had problems with that) but all other SG -3 specifications are met, the FPGA get speed grade -N3 The other ones which meet at least SG -2 specs get sped grade -2.In other words, the production goal is SG -3. If this is not achieved it becomes SG -N3 or SG -2.In practice this means:SG -2 us usually closer to SG-3 than the data sheet saysSG -N3 should be somewhere between SG -2 and SG -3 The variance of SG -N3 is larger than that of SG -3The variance of SG -2 is larger than that of SG -N3

### Reply 7:
Hey,So I've been happily running BTCMiner with sudo for a while, but I don't want to anymore The questions are relative to ubuntu 10.04.My user has read on /dev/bus/usb/*/* which allows ""BTCMiner -m t -i"" to see, but not query the board;Code:~$ java -cp <truncated> BTCMiner -m t -i0: bus=001 device=2 (`002') ID=221a:100I've changed the udev rule for USB to give the user's group write access and now I can query it just fine:Code:$ java -cp <truncated> BTCMiner -m t -i0: bus=001 device=2 (`002') ID=221a:100 Manufacturer=""ZTEX"" Product=""btcminer for ZTEX FPGA Modules"" <truncated> productID=10.0.1.1 fwVer=0 ifVer=1But when I try to run the <truncated> bus <truncated> New device: <truncated> f_default=192.00MHz <truncated> Error uploading bitstream: FPGA configuration failed: DONE pin does not go high (s<rest of thread truncated>
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9990,"Date: 2016-09
Topic: Project Evil Genius – Custom SHA2-256 Circuits on a FPGA
### Original post:
why don't you try developing scrypt mining for LTC for opensource community. There's avery high demand for it IMO.

### Reply 1:
What would you define as ""really great results""?

### Reply 2:
Maybe a good idea will also be implenmentig salted SHA1 algo for Nokia SL3 unlocking by bruteforce method.

### Reply 3:
Watching...

### Reply 4:
You mean <link> That's not converted C.

### Reply 5:
It's pretty obvious it's not converted C code, if you are talking about an automated C-to-HDL program. Those spit out garbage code. The Open Source code is human-readable - therefore not machine generated. Good luck. Personally I doubt there is much performance left on the table by the open source code, but please prove us wrong.

### Reply 6:
Any URL listing the problem? It looks interesting.

### Reply 7:
Yes, with pleasure:<link> is pretty good explained.It is little modified salted SHA1 algo and should be around 5 times faster than algo used for BTC.For sure it is possible to implement on FPGA. But there is a lot of pro guys with already done solution, not willing to share their work.Atom (admin and creator of Hashcat and OCLHashcat) is great guy and very skillful programmer, he did a LOT of optimization on crypto algos, maybe he could do even more if someone gets his attention.

### Reply 8:
It's a lot of fun down there! It's a shame the Spartan 6 architecture is so limited. I suggest you take a look at the 7-series FPGAs, like the Kintex or Artix. The architecture is nicer, and performance is much higher. For example, I was able to implement a miner using the DSP48E1s on a Kintex.Also, have you looked at bitfury's code? He has the most performant code for Spartan-6 LX150 chips, and I would be shocked if anyone beat his record (in MH/s) on that chip. It's optimized down at the slice level and manually placed. <link> or fortunately (depending on how you look at it), FPGA's will never beat ASICs in terms of performance per dollar, or performance per Watt. So FPGA mining is a curiosity and plan-B sort of thing now.I coded up a quick SL3 cracker about a year ago. It either ran on my Spartan 6 devkit, or the X6500, I can't recall. I could probably dump the code to github if people are interested. I didn't optimize it particularly well, just got it working.

### Reply 9:
FPGAMINERGetting SL3 unlock to FPGA miners would give them new life. I do not have much of them but they will be more universal if someone keeps them running SL3.Also I am not rich, but willing to support job with some BTCs.

### Reply 10:
Is there a compiled bitstream compatible with ztex out there?

### Reply 11:
Memory is problem. He will

### Reply 12:
Great, keep going!

### Reply 13:
If this does work you should be able to get twice the engines into one FPGA. There is money in this as there are plenty of FPGAs out there and I'm sure ppl would love to double thier hash rate!!

### Reply 14:
I'd also be very interested in a git, and I'd certainly throw a tip your direction.

### Reply 15:
Only if you were here a year ago, now this is a bit late if not obsolete very soon. I'm hoping the best and I'm very interested to see how well you manage to do with this project.

### Reply 16:
Watching, good luck with this.

### Reply 17:
May I ask did you obtain the size reduction on a HDL module or was it something else?

### Reply 18:
Okay got it. Sometimes the synthesis software can also do logic optimization, which could reduce the size of hardware, though it's very rarely succesful in substantiial reduction of hand optimized designs.

### Reply 19:
Jasinlee has a project running at <link> which seems fairly advanced (but NOT opensource)I'm currently working on an opensource implementation (just for the LOLs), using the on-chip FPGA ram (it needs 1Mbit per hasher core). I've got the simulation running fine using a register array for ram. Unfortunately I'm only estimating around 1khash/sec performance per hasher core. The next step is to port it to my DE0-Nano board (it can only fit half the scratchpad, so its going to interpolate which is even slower). I'll post it on my github once its in a presentable state.

### Reply 20:
That's awesome kudos to you. Would it be possible to load it on github so others can also try to use your scrypt miner?

### Reply 21:
I'm running the core at 25MHz (it didn't seem worth pipelining the salsa mix, given that scrypt is essentially a serial algorithm, so I've implemented it as one huge combinatorial tree), and clocking the on-chip ram at the same speed (just to keep it simple). Using the on-chip ram makes the ram interface very simple as its just a 1024bit wide data path. External RAM (as would be needed for to get any sort of performance from the fpga) is going to be more complicated and would need to run faster, which might make pipelining the salsa worthwhile. Bear in mind that I'm a complete amateur with FPGA/logic design, so d<rest of thread truncated>
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9121,"Date: 2015-05
Topic: antminer u2 problems
### Original post:
I just got my Ant Miner U2 and installed the drivers, but bitminter gives this error.""BFL drivers: <link> ASICMiner and Antminer drivers: <link> On Linux load FTDI driver: ""sudo modprobe ftdi_sio vendor=0x0403 product=0x6014"". You may lack access to serial ports (Ubuntu: ""sudo usermod -a -G dialout USERNAME"" then log out and back in).""Amy ideas?

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22273,"Date: 2018-01
Topic: Maximum Hot Operating Temperatures
### Original post:
Hi Folks,I am wondering what is the highest operating temperatures the S9 antminers can withstand during the summer time? Thanks.

### Reply 1:
I had hashing issues over the summer when intake temps broke 105f

### Reply 2:
PCB temps in the max. 70 c area are good.PCB temps over 80 c, are not so good and the miner might overheat in 85-95 c area.

### Reply 3:
The s9 is good to a minimum of 105c on chip temperatures. Earlier models would not shut down due to heat until the chips reached 115cThe s9 will run for months at a time at 100c chip temps, its not an issue.

### Reply 4:
Yeah those are chips temps and I mentioned pcb temps.We agree on this.

### Reply 5:
Thank you HagssFin and Fanatic. So the temperatures in the miner status is already in the Celsius? I thought it was in Fahrenheit and always converted it into Celsius. Fanatic when you say intake air at 105C is it the intake air temperature or the temperature of the chips in the miner status? Because if its taking 105C then the inside of the miner will get way too hot? How do you cool your farm in summer? I remember you mentioned you have more than 1K miners under management so that would be a lot to manage specially in the summer with the hot spots and everything. Thanks again both of you.

### Reply 6:
Yes it's Celcius....and Fanatic was talking about chip temp

### Reply 7:
Got it. Thank you.

### Reply 8:
So what happens in a scenarios when the miner reaches say 120C? Do you think it will stop hashing or will the hash board die or burn? Thanks.

### Reply 9:
Thermal shut down I believe.

### Reply 10:
Hi Fanatic,How do you cool your facilities in the summer time? Do you use evaporative coolers? What are some of the best practices? Thanks.

### Reply 11:
I really cant go into specifics but it really depends on your location. If you live in a high humidity area you will not have much luck with evaporative cooling. Its all about controlling air flow. Feeding miners fresh air that has not already been through a heat cycle will do wonders even on hotter days.Also I mention chip temps because that is all the current s9s report. There is no way to get PCB temps so you have to base what you do off of the data you have.

### Reply 12:
Got it. Thanks. Any book or video you could suggest for cooling in the summer for bitcoin mining facility?

### Reply 13:
I dont know of anything like that as all of my experience is first hand.This might help you understand which route to go: <link>

### Reply 14:
Thank you so much for the guidance. This is very helpful.

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21269,"Date: 2017-02
Topic: Mining Devices
### Original post:
Hello.i want to know if there is any way to learn all this mining devices so i can choose which one i will prefer to buy ?im new in Bitcoins and i want to learn more about Bitcoin miningi cant figure out what to buy as far as i know there are different algorithms for different coinsi would be thankful if some one will give some information about them and i will not have to search one by one in googleTHX.

### Reply 1:
No one can answer all of your questions for you. You need to study this forum and the different parts it contains such as, Hardware, Software, Miners, Trouble-Shooting and Tech Support, etc., etc.Since we don't know what kind of questions you don't know about, it would be impossible for us to provide all the answers you need. You may have more understanding in some areas than in others.Self-study is the absolute BEST way to learn anything. When you have a specific question, you may seek out the answers on this forum.Just about any and all questions you may come up with have been answered in this forum, somewhere, over time. If you can't find an answer here, use Google.Here is as good a place as any to start also:<link> luck!!

### Reply 2:
ok so here is thingi want list of all devices and algorithms and which one is used for what coin

### Reply 3:
If you want the list above I would charge you to build one.And before I built that list I would what an answer to the questions below.That list would take time to build. Plus If I did a really good job I would need to tell you if mining a coin/al-gore-rhythm makes money.An example sidehack's 2 chip usb stick would lose money mining on sha-256 btc at 20 cents a kwatt.Since there are dozens of algorithms and dozens of mining gear devices it would be a really big list.So do you want free advice?Or do you want to pay a little for some help?Here is the free advice answer the questions below.Tell me what country you are in.Tell me what state if you are in the usa.Tell me what does your power cost.Tell me how much power do you have to spare.Tell me how much money do you want to spend.Tell me if you have any power supplies in your possession.Tell me if noise matters.Tell me if you can move the heat out of your mining room.Once you answer the questions posted I will give you some free advice As to what gear may or may not work for you.

### Reply 4:
Google it. The answer is there in hundreds of different web pages. Very simple to find from multiple sources.You will need to rely on YOUR OWN smarts to get ahead in the mining game. You can't rely on others to hold your hand.Good luck! EDIT:Never mind. I see from re-reading your post that you don't want to use Google.That was the extent of my advice. There are too many variables that each person has that might not apply to the next person.Again, good luck.

### Reply 5:
I would make that list for a price but it would be HUGE and it would go out of date quickly.

### Reply 6:
I am very new about bitcoin too. I just learn anout it a week ago.What I do are:1) Buy ""Mastering bitcoin: unlocking digital cruptocurrencies"" on amazon book to read.2) Watch video about Bitcoin in youtube.3) Learn about how electric run and wire them.After that, buy 1 or 2 miners (buy the newest one) - Avalon 741, Avalon 721, Bitminer R4 or Bitminer S9 (NEVER BUY OLD MODEL ONE).I have 1 R4 and 1 more R4 on the way. My next miners will be Avalon 741 or newer at the time I purchase.Hope it will help,

### Reply 7:
The best way to learn ANYTHING is to do your own research. That way you know what you are doing. But it sounds like you want someone to do the work for you. That is called an ""Employee"".

### Reply 8:
Hi there. I don't know if you already got the answer you were looking for, but I'm in a mood of writing and share so, here it goes:Based on my personal tests and research I could explain you a bit of some algorithms and hardware I've used. ROI means Return of Investment, which is the estimated time you will get the money you have spent and then, start making profits.Algorithm Coin(s) ROI Hardware <truncated> Check This list Around 11 months Baikal Mini Miner X11Scrypt Check the Link Way too long (in this case) VPS (virtual private server) as CPU mining**This was a test, and learning process. I say test, because CPU mining is not longer lucrative but educational. It is the best tool you can use to learn fast and practice with your own PC or with an online server (in which case I could recommend you Amazon or Google, but beware of the small letters, they will always try to charge you even if the initial trial if ""free""). The cost of the little miner, you can watch it in their website. Also try to do research about different coins and hardware, take a snap in the forums and ALWAYS get the info from familiar sources and official websites. And as possible as you can, contact the compani<rest of post truncated>

### Reply 9:
Hi there bitcoinvest. Let me get this right. You need info abou<rest of thread truncated>
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17000,"Date: 2011-12
Topic: phoenix miner in solo question
### Original post:
i'm running a few rigs in solo mode using phoenix.everything is setup, it's connected and hashing, but the accepted and rejected counters remain at 0.is this normal?

### Reply 1:
boy are you confused or whatYou Don't run a miner if your mining soloDUA

### Reply 2:
maybe i'm doing something wrong, but i'm definitly not confused.bitcoin client is runing in server mode on one of my machines. the other rigs are connected to it and are hashing. Do you know the answer to my question?

### Reply 3:
Care to explain? I do agree ""someone"" is confused.

### Reply 4:
I will chime in because nobody has helped. Haven't use phoenix in a while (use cgminer now) but IIRC that is correct.Phoenix will only submit valid blocks to bitcoind when running in solo mode. Thus:accepted = valid block found and accepted by bitcoindrejected = valid block found but rejected by bitcoind (likely invalid due to you getting beat by another node solving same block faster)everything else stays internal to phoenix and isn't reported.Now I am not 100% sure on that simply because I haven't used phoenix in a while and haven't used it in solo mode for even longer. Personally I would just run a separate client (w/ separate wallet) on each machine. For some reason this is the new trend lately to try and make a solo client-server relationship. KISS. Keep It Simple Stupid.There is no benefit to doing this. You simply create a single point of failure. If the machine running bitcoind goes down you lose 100% of hashing power until you detect it and fix it. The first time that happens when you are alseep or somewhere you can't detect/fix it for 8 hours you are going to realize the folly of running it this way. If you run each machine independently and a machine goes down you simply<rest of post truncated>

### Reply 5:
if I run 2 clients on my network (i only tried once.) things did not go well, because both clients where trying to download the block chain. I cant remember the actual symptoms, but I know I told myself not to do this in the future.Is there something about the port the client runs on that my router couldn't handle both clients on the network?

### Reply 6:
Once the block chain is up to date the amount of bandwidth to keep the chain up to date is trivial. While the block chain is incomplete I could see issues. Just use one client to ""jump start"" the block chain of other clients by copying over the blockchain .dat files. I have 6 rigs all with seperate clients which I was running solo during the DDOS attacks and didn't experience any issues.On edit: Just thought of something. Some routers have problems with number of connections they can sustain at one time. This can cause problems in bittorrent. I wonder if you were experiencing something similar to that. Newer routers shouldn't have an issue even with hundreds of simultaneous connections though. You could try googling the name of your router and ""bittorrent"". If you see threads about poor bittorrent performance it might be # of simultaneous connections ""gimped"".

### Reply 7:
might have been the rrouter.. i have since bot a new one and will be upgrading the firmware so I can run cgminer. I have to keep using the gui till I get it set upI can run cgminer on 1, maybe 2 rigs, but when I started to bring them all over, the router could not handle it..I thought it was just the fact of 2 bitcoin clients both using the same port to communicate

### Reply 8:
Based on what you describe I am more confident it is a simultaneous connections issue.Two clients using the same port shouldn't be an issue because the router ""should"" handle the NAT mapping just fine. Also the client searches for peers on local subnet meaning that any blocks/transactions found by one client on your LAN will quickly be shared to all clients on the LAN.Still if you have found that one client works better I can at least understand why you are running it that way. Personally working w/ enterprise grade database servers in my job (redundant power supplies and electrical circuits, hotswappable cpu/ram, realtime fan monitoring, etc) makes me always thinking about redundancy and it would just bug the crap out of me to have all my rigs vulnerable to a single point of failure.

### Reply 9:
roger that... btw, switch a cpu on the fly..... wow.

### Reply 10:
Yeah pretty cool stuff the high end servers can do. Asked the guys in hardware dept (I am database developer) and they have never had to use that feature but they could if necessary and without bringing the server offline. Was kind of a letdown when he told me they wouldn't since my server is actually a fault tolerant cluster of servers. They would just take the affected server offline make the switch and then rebuild the cluster.I see the point but the gadget lover in me says how boring.

### Reply 11:
To me solo mining is still a mistery untill now i had 3 times a block but it never got rewarded and there is ha<rest of thread truncated>
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11972,"Date: 2012-08
Topic: What is Debian Squeeze?
### Original post:
Heard of this when referred to mining <truncated> mhash i'm assuming

### Reply 1:
Debian is a Linux <truncated> is the current stable version of Debian.<link>

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14027,"Date: 2011-05
Topic: Building first time under $1000 rig
### Original post:
Well, simply put, I want to get the best possible build for under $1000. I'm really confused right now because everything in the 5000's series is sold out. I don't know what the recommended GPUs are anymore. I really liked this build but 5850's are sold out:<link> short, can anyone recommend the best sub-$1000 build? Or, at least point me into the right direction by telling me which GPUs are the best to get currently.Or, to link me to a place where I can still purchase 5850s and telling me if the build above is good. BIG thanks in advance!!!

### Reply 1:
Bumpp!!

### Reply 2:
Everything looks about right. If you want the absolute cheapest video card you can find then you're most likely going to have to wait for newegg to get them back in stock. If you're in or near a decent sized city you might be able to find a good deal locally or on craigslist.

### Reply 3:
How about this 5830: <link> hardware comparison chart puts it at 290 Mhash/s, and it only costs $109.

### Reply 4:
Thank you guys so much!

### Reply 5:
Have you run the numbers to figure out how long it would have to run (how many blocks) it would take to pay it off and be profitable?I see a lot of ""Ok I'm buying this hardware!"" and very little forethought in the profitability of the setup (which only starts after you recoup the cost of the rig).

### Reply 6:
This right here. Also think about ""plans for the future"". Spending an extra $50 now for a larger PSU and a motherboard with an extra PCIe will save you a ton of cost/waste late if you choose you expand. Keep in mind your future goals as well before rushing out to grab new stuff.Include power costs in this, we're entering the summer months and large parts of the US (if you're in the US) have variable rates for the power that is FAR more expensive in the summer.Also, when doing any math here, given how fast difficulty has been changing, you're going to have a hard time getting long term numbers. For something kinda close, assume a 50% difficulty increase in every 2 weeks, its not really that exact and is almost a ""worst case"" scenario but it needs to be factored in. You're also taking a huge risk in that the BTC price is going to continue to increase relative to the difficulty, if that fails to happen, your daily income is going to be massive degraded in the very near future.Buying no hardware is not a sure thing, like any investment you're assuming risk, keep that in mind. At least with BTC mining you have a physical item (PC, vidcards etc) that has a potential resale value if all o<rest of post truncated>

### Reply 7:
290Mhash is a hell of an overclock. I have 2 cards right now running at 965/175. I'm getting 285 max. Still a very good value for your money, but don't expect 290.

### Reply 8:
I don't think you can fit 4 x 5850 in that case, it has only 7 expansion slots!

### Reply 9:
That case is terrible and the power supply is way more than you need. For 4 cards you're better off running caseless. Oterhwise you will have to get something huge like an HAF X or Rosewill Thor.Save yourself $50 by getting an HX850 (you could do with a750 but this one is a good deal), and a better case, and 4x5830s if you cant wait for 5850s to come back in stock (5830s have possibly the highest MHash/$$ ratio right now, but they're somewhat weak overall and have high power draws comparitively).

### Reply 10:
<link> amazon... they have many different 5850's in stock

### Reply 11:
Hi tread starter. I hope you don't mind me linking my tread to yours. I'm consolidating build discussions

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22000,"Date: 2017-12
Topic: Asic Errors on Antminers - Reboot Solution
### Original post:
Hi yall,I am new to Asic mining; hence, I have a question regarding asic errors on my antminers. I saw some errors on the asic status i.e. a mix of ooooxxooo. I rebooted the antminers and the errors go away. Is this normal? How often do you need to reboot the antminers? These units are still under warranty.

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16493,"Date: 2023-04
Topic: Why dont BTC hardware manu re release old equip with smaller node. EDIT: heatbit
### Original post:
I am talking about how sony re releases their playstation console with the same specs but will smaller nm tech and consuming less power.Why cant Bitmain or others create S9 antminer which is based on 5nm and lets say consume 1/3 of energy compare to the original 16nm s9?Watching this interview buy saifedean ammos is very insightful on what the future of mining will be like. Decentralized mining by the avg joe using asic miners which dont take 1K-3KW power <link> now the manufacturers are catering towards the big boys who can operate farms. To make BTC more decentralised, the old mining hardware should be released with smallertech node.10T\hash @ 700W would be a start.Apollo and merch have 1-3T\HASH mining hardware but the hardware is not upto the mark and after sales is not that good.Imagine having a S9i @ 13.5T/hash @ 5nm which only consumes 400W backed by a solar power system.EDIT: My prayers have been answered!<link>

### Reply 1:
Don't forget the catch that you will share your earnings (if any) with them if you choose the lowest version. I'm not sure how profitable it will be in the end. Btw, this product has been discussed before on this board, you can check it here[1]. Personally, I'm not sold on the idea, so time will tell whether it will be efficient and allows you to earn Bitcoin as effectively as miners or not.[1] <link>

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9814,"Date: 2016-05
Topic: Antminer S7 burnt probably
### Original post:
Last night severe voltage fluctuations possibly burned my antminer (at least that's what I think) no power nothing I'm using the APW-3 psu from bitmaintech. Does it have some sort of protection from damaging the antminer? How can I know if it's the PSU not the miner? Since it's voltage related I don't think it is covered under warranty. What should I do now? Can I repair it myself? (I have assembled PC in the past and I have that tech savvy in me) Because shipping it to them and back would cost a lot.P. S. I have two of them and both refuse to turn on.

### Reply 1:
I'd put my money on the PSU being dead, and the miner is fine.

### Reply 2:
Try another PSU that you know is good

### Reply 3:
It has 3 hashing boards right? I only have two PSUs (used with antminer s3) with 2 pcie each, if I connect 4 of them will it start?(3 to one hashing board and 4th near the front?) I'm scared about damaging it further.Thanks for the help

### Reply 4:
Are you saying you have a total of 4 PCIe cables? If I am seeing that right no do not connect 1 to each board. I would only do it proper with 3 PCIe per board and one on controller. And don't mix PSU's on one blade.PSU you can test with a PSU tester, might be worth getting if you are going to be staying in mining. With it you could test to make sure it's PSU is dead. But please explain more of your plan it scares me reading if it truly is talking about 4 PCIe cables total.

### Reply 5:
Right. Those are the only working PSUs I have with me right now and they're from antminer s3.And no, I entered mining late and met with so many misfortunes. I'm regretting my decision lately.Update: I tested the APW-3 PSUs with the s3+ and I can confirm that the PSUs are dead.Any way to know that the miner is fine? I really wanna see the green led glowing.

### Reply 6:
First off DO NOT use your S3 PSU's and try to run a S7 with 4 PCIe cables. Just don't even go that direction or bad things will happen. So that is the danger do not do. It sounds like you have already figured out PSU most likely with trying S3's with it. The way to confirm your S7 is using another compatable PSU. Most likely you are going to go with another APW-3. Did you get the PSU direct from bitmain? If so depending on purchase date might hit them up and see on RMA/Warranty. But you will need to talk to them as I have no idea what it takes on PSU I have always had good luck with theirs.

### Reply 7:
Yeah, their PSU is top notch ID say. It held up quite well with the voltage fluctuations here.Okay and I wasn't being fully honest I guess. It was lightning I suppose lot of fans and two mobile chargers in my house have burnt. I'm surprised how lights haven't burned out.Sending them a mail if that doesn't work I'll buy 2 PSUs.Thanks for helping!

### Reply 8:
I would just plug a PSU into the controller and none of the hashing boards to see if the controller lights up and the fans spin.

### Reply 9:
I feel like it was kinda a waste all of the help up above as full story only came out a post above yours:If his house's breaker did not flip and multiple items took lightning and burnt out, it's hard to say what all happened. I would still get a proper PSU to test it. But this is much more complex with real story coming out.

### Reply 10:
Grounding is also very important.You must prefer high profile breakboards and emergency breakboards.If a short circuit occurs they cut the electricity off.

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16035,"Date: 2019-07
Topic: Halving double-hash instruction count
### Original post:
I haven't followed bitcoin since before ASICs, and I remember when people were trying to squeeze every optimization they could out of the hashing algorithm in the gpu codes. I didn't know where to put this thread, but my question is about how ASICs are optimized. If I managed to find an extremely good optimization that somehow halved the instruction count needed for a double hash, is that interesting to the ASIC designers? I would think it would save power consumption at least. If not halving, what ratio is interesting? A tenth?

### Reply 1:
Yeah, so currently a double hash is like 2000+ sequential operations, so there's a maximum frequency you can operate while you wait for the output. If you somehow could use just 1000 gates, you could run it ~twice as fast, right? Or is there some other limitation?

### Reply 2:
ASIC's <truncated> integrated circuit's) can only perform one task. But this one task is done extremely efficiently.You can imagine it like this:You need to set the power at the correct pins (which basically is the input) and after the electricity has gone trough the hardware you are measuring which bits are set (output; effectively the hash).The time it needs to calculate a hash is the time the electricity needs to run through the hardware (not exactly, but <truncated> is always good (and desired). But how do you think you have achieved this optimization? Software-wise there isn't much you can do. You would need to optimize it hardware-wise.

### Reply 3:
CPU like instruction counts have very little to do with designing an ASIC. ASICs are designed using an RTL language. RTL stands for register transfer level, and is totally unrelated to CPU style sequential instructions. Essentially, an ASIC design means setting up a gate pipeline that has a certain delay to produce the first output, but after that short delay the circuit spits out 1 solution every clock cycle.It is like turning on a hose. There is a delay for the water to move from the faucet to the spout, but once water starts coming out, it comes out in a continuous stream.Nobody does SHA256 hashing with computer like instructions. It is all fully unrolled pipelines, with as many of them crammed onto a piece of silicon as possible. It is not done as a sequential operation in the way you are thinking of it. What you need to do if you want it to be interesting to ASIC manufacturers is to come up with a way to significantly reduce the number of transistors in a fully pipelined circuit.

### Reply 4:
Ah, so you're saying that as soon as the signal for one hash leaves a transistor to go the next, the next hash is already incoming to that first transistor? Then the limit on clock speed is only the switching speed of one transistor, and so there's no way to really improve it? Would reducing the number of transistors just reduce the power consumption then?

### Reply 5:
i do not understand why some replies implies that there is nothing much that can be done on the software layer. if what they say is true then how do you explain the effect of overt/covert asicboost? it is certainly far from being ""double"" the performance, but there are things on the software side that can improve hashing.

### Reply 6:
But the chip has patterns burned into it to allow that.So while the software turns it on and off the switch for boost on/off is built into the chip.But others know more about this than I do.

### Reply 7:
The math for a single SHA256 hash is already pretty simple linear operation. Transistor counts to perform this has already been optimized at the bare transistor layer with companies like bitmain and Co pouring billions into these optimizations over the last 5 years.I guess you could stumble across a new mathematical theory that produces that same SHA256 output using a completely different simpler algorithm, but good luck with that .

### Reply 8:
Phil is right, the BM1387 chip used in the S9 was designed with asicboost in mind from the beginning (as an option, not as a necessity). The recent firmwares simply provide the software support necessary to actually gain that ~13% power savings.

### Reply 9:
Correct but AB does that by incrementing the starting value of work sent to the chips 2-4 times and then reusing it - NOT by 'halving the instruction count'. Do a search for the ASICBOOST whitepaper to find out what it does.

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16664,"Date: 2011-06
Topic: aticonfig: command not found (ubuntu 11.04)
### Original post:
Download and install ATI Driver 11.5 for Linux 64bit. cd ~ wget <link> sudo sh <truncated> --buildpkg Ubuntu/natty sudo dpkg -i *.deb sudo apt-get -f install sudo aticonfig -f --initial --adapter=all sudo rebootVerify that the ATI Driver is setup and running cd ~ DISPLAY=:0 sudo fglrxinfo

### Reply 1:
Said another way: You don't have it installed. Issue ALL of the commands in my Post, in order. Provide the output of each one.

### Reply 2:
It fails to paste the output of your commands here in the Post?I'm trying to help, but without either remote access to your box, or you providing the output from the system when you run the commands, it's going to be impossible.

### Reply 3:
Try /usr/bin/aticonfig instead of just aticonfig

### Reply 4:
Last try. I checked my Ubuntu 11.04 Desktop system and see <truncated> ls -la <truncated> 1 root root 27 2011-06-15 20:42 /usr/bin/aticonfig -> <truncated> ls -la <truncated> 1 root root 28 2011-06-15 20:42 <truncated> -> <truncated> ultimately, the aticonfig program is installed under <truncated> <truncated> the output?

### Reply 5:
Yep, there you go. Looks like your install didn't provide the appropriate symbolic links, but you do have it installed.I can give you the commands to create the symbolic links if you'd like. They are:Code:sudo ln -s <truncated> <truncated> ln -s <truncated> /usr/bin/aticonfig

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9161,"Date: 2015-06
Topic: Forcing a variable speed fan to full speed
### Original post:
As I've said in other posts, I replaced all the fans on my Antminer S5s with Scythe Slip Stream 120mm 3-Pin Case Fan SY1225SL12SH units. I like how much air they push for the sound level.What I've noticed is the fans, while advertised at 1900 RPM, are running at a variable range of 1300RPM to 1680RPM. Is there a way anyone is aware of to force them to run all the way to 1900 RPM by modifying the controls in the web interface? Or something similar? I was considering getting an inline fan controller, but I would think this is something that could be controlled with software.Any ideas?Denis

### Reply 1:
I believe if you were to disconnect the other wire and leave just red and black that it would run at full speed. Could probably pop them right out of the connector, no need to cut them. Not a software solution, however.

### Reply 2:
That definitely works..

### Reply 3:
Cut the blue wire!

### Reply 4:
I am confused as to why ""cutting the blue wire"" would alter the RPM of a 3-pin fan. My understanding of a 3-pin is as follows:- Ground: The black wire in all cases I have seen.- +12V: Usually yellow, maybe Red on some fans?- Tachometer: Blue wire? This is a signal FROM the fan TO the controller. It allows the controller to ""sense"" what what the speed of the fan is. Originally used to detect a stalled/broken fan. This is how you can get the RPM on the GUI. Usually most variable speed fans these days have a 4th wire, which carries pulses TO the fan to control it's speed. Prior to the PWM (aka 4-wire) fans, the controller would have to adjust downward the actual voltage on the +12V line to slow it down. I'd swear the S5 had 4-wire PWM control logic and connectors for it's fans.It seems to me that if you want a 3-wire fan to always at full speed, you connect the +12 and Ground wires directly to the power supply, and call it a day. No need to have the controller board get involved at all. This seems particularly attractive if you add a 2nd fan to the S5. I've read that the S5 can in some cases lower the fan speed and still run the hashing hardware at near full speed. A fan directly wire<rest of post truncated>

### Reply 5:
Your misconception seems to be the ""Tachometer"" wire. This is the wire that lets the controller control the fan speed. Cut it, and it should be 100% all the time. You probably already know that, but I'm confirming for you.

### Reply 6:
um this fan appears to be a 3 wire fan..<link> blue wire to cut.it has only - + and sense.it should already run at full speed.. they do have a 10% variance tho.. which is about 200 rpm.not quite sure these are suitable for a s5, even with 2 in push/pull.

### Reply 7:
There is 2 methods of controlling fans which is why you're getting confused.1) The first is by variable voltage, where instead of a constant 12V being fed, somewhere between 5-12V is fed. This slows down the fan.2) More powerful fans will use a constant 12V but with a PWM signal. This signal determines how quickly the motor should flash on or off. So if you want the fan to run at ~half speed, the PWM signal tells the motor to be off for ~50% of the time. That signal usually determines the off part of the cycle, and so a lack of any signal means 100% on (full speed).

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21869,"Date: 2017-11
Topic: Avalon 6 change mutipool strategy
### Original post:
Hello!I want change pool management strategy (avalon miner).How to make change FAILOVER > LOAD BALANCE or use quota based scheduler?Which strategy is better?

### Reply 1:
What exactly are you trying to do? Multipool mining with bitcoin died a long time ago, its not even supported by current generation miners.

### Reply 2:
i want to test 2-3 days: which pool better for my isp, avalon and ....automatic change every 2-3 hours pool.

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22798,"Date: 2018-11
Topic: Antminer S9 Rotate / Quota option
### Original post:
HiI come to you because I can not set up an option, I tried everything ROTATE or QUOTA but to no avail ...I want to share the power of my S9 for try 2 pool mainly, then I would like to know how it works! lolSay I would like to change pool every 12 hours to try, or a 50% mode?Any help will be welcome !!!

### Reply 1:
the easiest way i can think of would be using Awesome Miner, it is free if you are going to use a single asic. i have not tried whatever you trying to do ""because it does not make sense to me"" but i know that function exist.also if you are doing this just to test which pool is better, then it's not the best way to do this , 12 hours will tell you nothing.

### Reply 2:
Why would you want to do this? Can't you just take your miners and have half of them mine to one pool, and half to the other?If you have another Linux-based machine on the same network then you can script the reconfigurations and run the script twelve hours with the crontab.

### Reply 3:
There is no way to split the hash rate on the miner itself, this feature was very problematic and that is why it is no longer available. If you only have one miner you will barely be registering profits anyway, splitting it will make it that much harder to get decent payouts.

### Reply 4:
In fact, I'm mainly looking to understand all the minor's functionality! And also, would like this share a minor with a friend but in automatic;)

### Reply 5:
yes i know but i just need to understand all the fonction of the miner, most i interessed by more option :d

### Reply 6:
Why not just split the profits from the miner after the pool pays out? No need to mine to two pools.

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12103,"Date: 2012-11
Topic: BFGMiner: modular FPGA/GPU & X6500, overclk/fans, GBT, RPC, Linux/PPA/Win 2.9.1
### Original post:
NEW VERSION 2.9.1, OCTOBER 30 2012Hopefully this fixes everyone's problems and more! I've also bumped the stable release to 2.8.4 including the fixes relevant to the 2.8.x versions.Human readable changelog:X6500: Fix Windows crash.RPC: Add support for X6500 FPGAs.Enforce --expiry option to make solo mining without longpoll move on eventually (fixes jborkl's problem).Always detect non-scrypt if Stratum is in use (fixes julz's problem).Various other bug fixes, including bitpop's problem and a number of memory leaks.Full changelogWhen we find a block, always progress to it for miningBugfix: Enforce --expiry, but split --expiry-lp for a longer expiry on longpoll setupsBugfix: regeneratehash needs to compare hash segments in Little Endian, not Big EndianBugfix: Always fail scrypt detection if Stratum is workingBugfix: Scan for ft232r devices later, after console lock and other mutexes are initialized properlyft232r: Debuglog non-FTDI device IDs foundBugfix: Wait to release JSON result in case of JSON-RPC error until we've logged the errorBugfix: RPC: Defer release of JSON until after cmd is usedBugfix: Release JSON result in case of JSON-RPC errorBugfix: Release job JSON result as soon <rest of post truncated>

### Reply 1:
Same isues with hashrate than reported in 2.9.0<link>

### Reply 2:
New version(2.9.1) does NOT crash windows 7 x64 for me. Current uptime with new version approximately 12hrs on W8x64 & 8hrs on W7x64. Previous version(2.8.2) crashed windoze within minutes. Whatever ya done, TY! Donation inbound.

### Reply 3:
2.9.1 Mining nicely on a Raspberry Pi, however I do get Comm Error disconnects randomly with 4x BFL Singles. Google search lead me to the issue board, and post discussing that this is due to the usb problems on the raspberry pi. I have a 512 MB RPi on order to see if the new reversion fixes the issue.

### Reply 4:
As I understand it, there's a way to upgrade the firmware on old revisions too.

### Reply 5:
Raspberry Pi Update Tool<link> there is a newer Raspbian build posted on 10/28.<link>

### Reply 6:
Raspberry Pi Update Tool<link> there is a newer Raspbian build posted on 10/28.<link> should have the newest build as I update / upgrade / dist-upgrade on a regular basis.I thought the USB problem was hardware, not fixable with firmware, and was address on the new 512 MB memory RPi?

### Reply 7:
2.9.1 fixed all the errors I was getting with 9.0thank you!

### Reply 8:
I've switched off the RPi to a Dell Mini 9 Netbook running Lubuntu and all Comm Errors are gone, so still thinking it is a RPi issue.

### Reply 9:
2.9.1 working great on win7 <truncated>

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16490,"Date: 2023-04
Topic: What is the hashrate of a 4090 on sha256?
### Original post:
I am curious. I have two 4090s and am curious to know what my hashrate would be.Thanks!

### Reply 1:
It all depends on target difficulty of the coin. With BTC diff at 47.89T it would be abysmal.For alt sha256 crapcoins which all have far lower diff, ask in the altcoin areas of the Forum. This area is for BTC only.

### Reply 2:
.5gh was the old amd 7900 cards my guess is 8x that which is 4gh this is merely a guess may be low so lets revise to 4gh-8ghan old s9 does 14,000 gha s17 does 50,000 gha s19 does 100,000 ghpoint to cfx octopus algo on nicehash and convert to btc.btw not to be discussed in btc section.it is considered an altcoin subject.

### Reply 3:
Looking at <link> someone shared benchmark result of RTX 4090 which state SHA2-256 has speed 21791.7 MH/s (about 21.79 GH/s). Since Bitcoin use SHA256d (two SHA2-256), i expect RTX 4090 hashrate for Bitcoin mining is about 10.9 GH/s or lower.

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23004,"Date: 2019-07
Topic: basic cgminer commands via SSH: display miner status?
### Original post:
Greetings. I've been enjoying using cgminer with my Avalon 841.While, yes, I can log into my Openwrt server via the web client, I've been preferring to start/stop the miner via SSH and a terminal window. (Which I now have an automated command set up on my phone that I can even use Siri to start or stop the miner by just saying ""miner stop"" or ""miner start"". Kinda stupid, but so am I.)One thing I haven't figured out is how to get the status of the miner via SSH. Yes, I know I can get the info via the web client...even remotely. I'm just curious if this is possible via SSH.Available commands:Code: start Start the service stop Stop the service restart Restart the service reload Reload configuration files (or restart if that fails) enable Enable service autostart disable Disable service autostartI would think there would be a ""status"" command or something. Looking in the readme, I find some neat options (-V to see the version and -n to see what's connected via USB) but nothing that tells me if it's running and what pool it's connected to... I'm sure I'm missing something very basic...Thanks!Also noticing that -V and -n work when calling cgminer from the root <truncated> cgminer -Vcgmin<rest of post truncated>

### Reply 1:
Indeed, what you are confusing is the script (""batch"" in ms parlance) file to start the cgminer ""service"" (they are called ""daemons"" in *nix) with the actual cgminer binary. You ran the actual cgminer binary when you did that -V command option, so do that again with -h or --help to find out what commands cgminer accepts. Presumably that binary is located in /usr/bin, i don't have an avalon to find out, but you don't need the full path like you do when calling the script that calls cgminer, because the binary, as opposed to the script that calls it at boot, is in the system path already.Do note that there is usually a cgminer instance running already, to stop it you would use that ""service"" script, like: /etc/init.d/cgminer stop then issue the commands to cgminer directly to see/test what options you want, once settled you could modify the starting script. BUT, cgminer also reads its own configuration file, which should be in /etc/cgminer.conf or similar.You can read the actual documentation here, but asic manufacturers often modify and add their own options which might not be shown there.The developer is an active moderator in this board (-ck). I don't know the story but i think he<rest of post truncated>

### Reply 2:
Great! Makes sense. Thanks for the hot tips, the info, and the links. Woo hoo!I'll drop back in if I have further questions.Really appreciate it!

### Reply 3:
Hit cgminer-api for the Avalons.So something <truncated> statsYou can also read the cgminer repo to get some examples of connecting to the api without sshing in. These examples are <truncated> file)""This repo is the Canaan Creative repo, they push it to the main repo Artemis3 posted but it's updated quicker on theirs.<link>

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11550,"Date: 2011-07
Topic: further improved phatk OpenCL Kernel (> 2% increase) for Phoenix - 2011-07-03
### Original post:
Works perfectly for me, although only slight increase in performance (371 -> 373 MH/s). But I had the previous patch already in place. Thanks!

### Reply 1:
Great, thanks. I went from 240 -> 242.5 on my 5850's. I was using only the ""3% Ma-function patch"" before.I've never developed any code for GPUs or used OpenCL, but wouldn't the compiler take care of that for you? At least all C compilers would.

### Reply 2:
Great that you benefit from the modifications . Your comment about the compiler stuff IS right, but at least it doesn't make things worse .Dia

### Reply 3:
No change for me at all unfortunately, not even 0.1 MH/s. I copied the file in place of <truncated> and restarted my instances of <truncated> 11.6SDK 2.1phatk (bundled with phoenix 1.50 with MA tweak)VECTORS BFI_INT FASTLOOP=false AGGRESSION=12 WORKSIZE=256Solo mining5850 Xtreme @ 1.0875V - 970MHz (399.4 MH/s) (75*C)5850 Xtreme @ 1.1625V - 1050MHz (432.8 MH/s) (60*C)

### Reply 4:
I went from 56->61Mhash/s on my 4850. Phatk is now faster than DiabloMiner. Getting 59Mhash/s with DiabloMiner.

### Reply 5:
Why are you using SDK 2.1? The phatk Kernel likes 2.4 best. Your Phoenix settings look good though.Strange that your MH/s didn't change at all. Did Phoenix apply the BFI_INT patch the first time you startet with the new Kernel?Dia

### Reply 6:
Good to know that 4XXX series get a boost, too . What SDK are you on?Dia

### Reply 7:
I'm using SDK 2.1 because when I compared it with 2.4 I found a slight speed improvement with both phatk and poclbm (much larger with poclbm).I haven't tried SDK 2.4 since applying the MA patch so that is maybe worth a try.BFI_INT is definitely being used. If I restart the command without BFI_INT on my 399.4 MH/s gpu I get 354.5 MH/s instead.

### Reply 8:
Just tried SDK 2.4 on my 399.4 MH/s gpu. It went down to 393.7 MH/s (actually 394.3 MH/s but occasionally dropping off to 390-391, I took an average).Edit: I compared the new kernel with the old one using SDK 2.4 and the improvement was 3.1 MH/s (+0.79%). This is a nice improvement but not enough to make me move away from SDK 2.1. Also, SDK 2.4 causes the MH/s to drop suddenly by 3 or 4 MH/s every so often (variance is within 0.5 MH/s with SDK 2.1 for me) and even the peak values I achieve with SDK 2.4, new kernel or not, are below my SDK 2.1 average.Ah well, good work though. I sent you some BTC anyway simply because you tried to help me fix my problem.

### Reply 9:
I have a really high reject rate with this kernel on my 4850. I've tried alternatively running this kernel and DiabloMiner. I'm getting about 30%-50% reject on your kernel vs 10% on DiabloMiner. Could just be bad luck. Right now it's 4 accepted and 5 rejected after 10 minutes.

### Reply 10:
I found when pool mining that most of my rejects came shortly after new work was pushed. As a result I had to try much longer test runs (3 hours or so) before coming to a conclusion about the miner's efficiency.

### Reply 11:
I'm aware of that, but I've had more rejects in the 10 minutes I'm running it than I've had all day. 411 shares, 22 stale. 13 of those are from testing with this kernel in the last 45 minutes or so.I'm trying another pool and it's a bit better at 6 Accepted 2 Rejected. On bitclockers I was running at 300+ shares and 11 rejects with DM but getting the numbers above with the modded phatk kernel using phoenix. Trying it again.

### Reply 12:
Yes, after 45 minutes things look highly suspect to me. A good 3 hour test is useful for comparing different very-good setups but this tweak seems to have really hurt your accept/reject ratio. Let us know your best when you're done testing.

### Reply 13:
With the original phatk kernel (ma patched)It's actually 05:22 now so duration is same but number of results is significantly less though total accepted is same. Hashrate is 57 vs 61 with your kernel.Update: Some more results...seems like it may just be a phoenix thing with bitclockers. I will get some data from DM for reference but I may have to go ask in Phoenix/GUIMiner thread.From DiabloMinerTrying your kernel with poclbm miner now. Actually getting 62 on here vs 61 from Phoenix.Update again: No issues on poclbm using your kernel so I guess it's Phoenix.

### Reply 14:
Dunno what the difference is between the 2 OpenCL wise. Setup, command queues, perhaps kernel result download or processing.If you see a problem you should contact jedi95, perhaps he can clear this up?Dia

### Reply 15:
Hi! Just tested this, it did boost my 5850 @ 960/300/1.174v from 390 > 395. However, it seems to drop off to 380 all of a sudden like 3-4 seconds then back up to 395. Still, an increase, thanks for the work!

### Reply 16:
I will look into it. GUIMiner has their own Phoenix and that may be related.

### Reply 17:
I was already running the ""#define Ma"" optimized kernel, and this is good for another .5% on top <rest of thread truncated>
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23814,"Date: 2021-12
Topic: Avalon A921 | Avalon Devices not detected.
### Original post:
Since you are using the latest controller firmware you probably also need to update the latest miner firmware (MM). In the past I've found that they need to be matched to each other or the miner just does not run.Now as to where the MM firmware is on the Canaan site... Since they redid the site I've no idea

### Reply 1:
<link> I am not sure that would be it. IIRC with the older firmware mismatches it gave an error if it was not matched, it did not just not mine.But, it's been a while since I had any 921 around.And the obvious question, did it work and stop or did it never work?-Dave

### Reply 2:
Have you tried any other pools and/or using the more typical port:3333 vs the other ports?

### Reply 3:
Ya, i tried with Binance pool. its also not working.from the CGminer status, it seems like the controller is connected to the pool, but not connect to my Avalon device.

### Reply 4:
Guys .... need your expertise to help me to solve the below isuse. I have issue for setup Avalon 921 miner.Have use RPI 3 Model B as controller and connected to Miner and the Auc3 converter. but still having issue to start mining. The miner's LED stay at Yellow and also the Auc3 converter. The avalon Devices and status showing "" This section contains no values yet"".I installed the firmware img from <link> also have input all the pool address which is same as i did for my Antminers. Please see below enclosed API Log for your <truncated> Version] => Avalon Firmware for avalon9 - 20190301 luci: 815f8ca cgminer: a60adfc cgminer-packages: 1714e12Reply was <truncated> <truncated> <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work <truncated> <truncated> <truncated> Diff Count=16,Max Diff Count=46,Times Sent=2,Bytes Sent=146,Times Recv=13,Bytes Recv=11906,Net Bytes Sent=146,Net Bytes <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,W<rest of post truncated>

### Reply 5:
Please see my screenshot.i have re-flashed the firmware to latest version and as well as the MM upgrade. still showing same result. it never work. my RPI 3 model B controller cannot detect the Avalon device at all.<link>

### Reply 6:
Any progress on finding wassup with your machine?

### Reply 7:
Hi, have you found the solution? Can share as I am newbie with same problem

### Reply 8:
As I said in a prev post, does the controller see the AUC3? If not then replace the USB cable with one that is known to be a data cable and not just a charging cable.Also make sure that the controller and miner are running the same versions of firmware. Mismatched versions usually will not run.

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23379,"Date: 2020-12
Topic: Question About Frequency Settings And Kinda Overclock
### Original post:
With the latest bitmain firmware(Or Braiins OS) we can set frequency(With bitmain fw we can set +0.5 to 2 TH/s) and it works like a charm. Temperature does not go much higher maybe a few degrees. My concern here if that process will harm the chips/Hash boards in long term? Im not gonna use that option too hard, I just want to give +0.5 to 1 TH/s to my each miners and concerned if its bad in long term for hash boards. Thank you

### Reply 1:
It depends on the temp. high temp may damage your hashboard chips and it may die too early if you force them to run in very hot so if you are planning to overclock the miner monitor the temp.Let me ask if what kind of miner you are trying to overclock? If it's s9s check the temp ranges below.Temp in celciusS9 series excl. S9i, S9j, S9-HydroRange: 65 - 115Chip max. 135PCB max. 90S9iPCB max. 85S9j and S9-HydroPCB max. 95Source: <link>

### Reply 2:
Chip max means the chip temp values shown in interface right? What is PCB and Range means seperately then? Im asking coz I dont know and appreciated if you mind to explain a little sir. Yes they are S9 miners, I forgot to addOr let me express myself that way. The chips was shown 82-83-84 and now after I added some hashrates from interface, temp is now 86-85-88. Is it bad, should I reverse? Until what point temps show in interface are safe? @BitMaxzEDIT: They are running at 690-710 frequency with just +3-4 temp in chips. Can you say its safe to run like that?

### Reply 3:
PCM stands for phase change material i guess ! anyhow it does not really matter, you want to monitor the chip temperature, the s9 ""supposedly"" can run fine up to 115 degrees, your temps are pretty fine, I run mine at 90 or even low 100s sometimes , as far as the question of wether overclocking will reduce the lifespan of your miner, there is no doubt the answer is a YES , but !I have seen many gears fail real early while being run on stock settings, or even underclocked, I have also seen gears that have been overcloked and run really really hot and been going on beast mode for years, so all science aside , these gears are a merely luck based.I have personally overclocked almost all my gears using the latest S9 firmware ,am pretty sure I will have to get rid of these S9s long before they burn, do this at your own risk tho.

### Reply 4:
This is normal and automatic on most pools. The faster your miner is, the higher difficulty. That is to ensure a steady amount of work without over-clogging the connection or the pool.As for temperature, that is your personal choice. 90 is considered the red line. With Braiins OS you can verify your settings by making sure ideal and actual rate match, and that there is no excessive amount of errors. You can fine tune your overclocking (for speed) or your underclocking (for efficiency) better with Braiins OS.

### Reply 5:
I don't think he meant that, he only said you can confirm your setting by comparing ideal and actual, which is nothing special because bitmain firmware has that too, I don't see how Braiin's OS can be safer for overclocking, in fact come to think about it, bitmain newest firmware is safer because there is only so much you can do, so you can't really go wrong.but by all means if you have the time , i suggest you go with Braiin's, sadly it's a lot of work.

### Reply 6:
Bump, Its still the same. 131k Diff on overclocked devices and less accepted shares. Only few of them has Diff 65k but they all change time to time..EDIT: One hash board's PCB temp reached to 86, should I tune it down?

### Reply 7:
So you are saying with Braiins OS, Overclocking is safer? I wanted to install Braiins OS but I could not find an answer to a question. If I install Braiins OS to Nand since all my devices run 2019 Bitmain fw, How can I install bitmain fw to Nand? I have multiple devices, I dont wan to run all of them with SD card, installing would be better choice.

### Reply 8:
All of your questions are already in braiins OS docs from here <link> you want to install braiins OS to nand you can follow this guide from here Permanently Migrating from Factory Firmware to Braiins OS.

### Reply 9:
I just could not find how to get back from braiins os in that page. Bitmain fw wont have option to ""install nand"" like in braiins os right?

### Reply 10:
No, they have through SD card flashing if you flash it with Braiins OS as permanent firmware you can revert it back to bitmains firmware.If you don't how to do that there is a complete guide flash it back to original firmware.Check this S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery.

### Reply 11:
BraiinsOS gives you more control, but it comes with responsibility. You can find a more efficient (and safer) setting, but you can also damage your miner if you don't pay attention and bOS won't stop you from using improper speeds and voltages.Someone linked the procedure to restore the olde<rest of thread truncated>
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22005,"Date: 2017-12
Topic: Beginner Problems with the Canaan Avalon 741 - Please Help
### Original post:
Forgive me if these are very ""newbie"" questions. I'm actually hoping they are because the result will be a very straightforward answer to ease my frustration, lol.#1My primary issue is that I cannot access the AvalonMiner dashboard where I can enable settings on the controller and complete setup to actually start mining. This stems from the fact that every time I type in ""192.168.0.100"" in Google Chrome browser, I get the same result which is a 10-12 sec load time with an end result of ""site cannot be reached""I've tried updating my IP and DNS settings exactly as they're pictured in the setup guide directly from Canaan to no avail. Am I missing something here? It plagues me to no end to know that I'm this close to being able to mine but a network/ip/DNS issue is stopping me. I have 0% skill when it comes to this stuff so any help is <truncated> related question is: I intend on using my laptop to route my Avalon controller to, but it only has 1 Ethernet port. Which of the following do I do?- Route ethernet cable from controller to laptop and then simply connect to internet via WiFi with laptop- Purchase some sort of splitter or extension so I can plug into Ethernet port and create 2 <rest of post truncated>

### Reply 1:
The Avalon controller must be connected to your internet router through Ethernet cable. If your local network is not using 192.168.1.x, for example many networks are set to 192.168.0.x then it won't be found. You'll have to change your network setup to use 192.168.1.x for a while to configure it. You can change it back later.So your 741 controller will connect to the router with Ethernet cable, and your laptop will connect to your router through Ethernet cable or Wi-Fi. The router will allow them to talk to each other, and talk to the internet. The 741 should not normally be connected directly to a PC.If you only have one Ethernet connection in the wall (dorm??) Then you will need a router or Ethernet switch first.

### Reply 2:
You need to change the IP on your PC to 192.168.0.10. Do that and you will be able to access the Avalon on IP 192.168.0.100.Use the built-in wifi on the Raspberry Pi, leave your laptop out of this.

### Reply 3:
Follow this official guide, it has all the instructions for the process<link>

### Reply 4:
The issue here with configuring the router/switch is that we're using this for my company (free electricity). The rig is to be used at my office that employs 20 people. ALL of their computers go through this switch. Hence me not wanting to change any settings on a router level. Is there any way just to change the computer settings only? I'm also confused because your post references 192.168.1.x as the correct setting but others have told me 192.168.0.x - which is correct and what do I enter as 'x'? Just any 1-3 digit number I wish?Thanks!

### Reply 5:
Sorry, not sure what you mean by this?To clarify, I'm using the actual Avalon Controller created by Canaan. I understand it's an RPI as well but I don't know anything about them..

### Reply 6:
Maybe you find a friend with a basic level of networking knowledge to help you. The fact that these are extremely basic networking questions you are asking leads me to believe you may not have the IT aptitude to make this work on your own. If you are plugging into the work network and mess up the settings you could take down your coworkers computers on accident.

### Reply 7:
^ This is good advice. The questions you're asking are tough to answer without writing a book on network configuration. A techie friend should be able to sort you out in about 20 minutes.If you're determined to do it yourself - here is what I suggest:You can plug your laptop directly into the Controller with a lan cable. Set your laptop or computer to use:IP: <truncated> <truncated> 192.168.0.1DNS <truncated> should be use the controller interface.THEN: (...and only if you know how to re-write the controller flash card in case you mess this up)Using the basic setup select DHCP networking. Save and Apply.Plug the controller into your network and restart it.Use the command line console on the controller and login. Type IFCONFIGThis is your controllers new IP address which you can use to access the console going forward.

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9806,"Date: 2016-05
Topic: Hardware Sales Tax bought outside of U.S.A
### Original post:
Bought hardware from bitmain. Has anyone recieved a letter like this from DEPARTMENT OF FINANCE AND ADMINISTRATIONtax auditorRe: Customs's Related PurchaseDEAR TAXPAYER:Like most states, Arkansas law requires sales tax to be paid on items purchased in Arkansas, and compensating use tax to be paid on items purchased from outside of the state that are delivered, and brought into Arkansas unless there is an exemption granted for the specific item.The Arkansas Department of Finance and Administration currently has information from the United States Customs office, which indicates that you made purchases from outside the United States, and had the items shipped into the States of Arkansas.Please provide a description of the items purchased, and any sales tax exemption that you think might be applicable. If the items purchased are not exempt, Arkansas Compensating Use Tax is due on the purchase.If you have previously paid use tax on this merchandise, please send appropriate documentation to substantiate your position.Entry Date: 01-Dec-2015Export Country: CNTariff Section: MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THEREOF; SOUND RECORDERS AND REPRODUCERS, TELEVISIO<rest of post truncated>

### Reply 1:
Importing miners into Canada I had to pay 5% GST and was happy to do so. In much of Europe you will pay up to 20% value-added tax. It seems to me that your state (In the US obviously this will differ from state to state on what goods and how much tax is owed) has some kind of import/sales tax and your miners will almost certainly qualify, especially in an amount that would require $15,000 worth of tax!It is up to you to determine what taxes may be applicable and what rate is applied in your state.According to <link> states that depending on municipality you may owe between 6.5% ($200,000 worth of miners!) and 11.25% ($180,000 worth of miners!) sales tax on imported itemsEither way I'm impressed with that number being hosted in North America Interesting side note: In Canada bitcoin generation is GST-exempt (receiving bitcoins by mining). Receiving fiat for bitcoin amounts to capital gain at a minimal tax rate, all for some very good reasons. However I determined that hosting services ie. hosting someone else's miners for a % or flat-rate fee would be GST applicable at 5%.

### Reply 2:
HM some one at bitmain may have screwed up or did you use FEDEX which is a bad idea . you may end up paying more then you save using FEDEX from Past buys with them and buying direct from Bitmain. Then they ( FEDEX ) lied to me over the phone about why, told me i wouldn't be charge they took care of it i got charged any way . i had to pay it or they would have messed up my credit . That sounds like one of two things either bitmain marked it wrong if you did pay the import tax or you used FedEx if neither then maybe be the laws changed sense i last bought form them other wise can't say customs is a pain any way.

### Reply 3:
Seems more likely he bought $15k worth of miners, so a 6% tax on that would be in the $900 neighborhood. I don't think it would matter who the carrier was (FedEx vs UPS), any importation over $2500 has to be filed with US Customs who, according to the poster, passed that information on to the Arkansas tax department.

### Reply 4:
maybe the law changed i have never been charged sales buying imports maybe import taxes , i know i read some place they were trying to change that what state Arkansas sales tax some thing doesn't seem right but dealing with custom is a pain any way if the seller and or shipper mess up the order on the paper work then you eat it .according to that he bought it in Arkansas but if he bought it form bitmain direct hows that poss it was a import right ? . like i said the US was tiring to change that maybe they did for 2016 he being hit for it now i never really understood some of the stuff customs seems to do and try my best to not order out of the US .it does say Please provide a description of the items purchased, and any sales tax exemption that you think might be applicable. If the items purchased are not exempt, Arkansas Compensating Use Tax is due on the purchase. Ive heard some bad story's about packages being marked wrong for custom even below 2500 . SO GL i hope he fixes it .Your right each state in the US has it's own sells tax unlike other places in the World. guess hes luckly it wasn't one of them with a 8 % st was trying to offer some possibility , i know that feeling of ge<rest of post truncated>

### Reply 5:
Most stories are coded wrong, and can be fixed after with carrier. If he has to pay that is bad luck or bad error. I can say I have not ordered to AR though. But I would contact the company you shipped with as they likely are ones to report this. Ask what it is coded as and check around board what others had in similar incidents. As most I think got recoded and paid muc<rest of thread truncated>
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22514,"Date: 2018-04
Topic: Heat Solution?
### Original post:
Hi Guysi am renting a 1200 ft warehouse and i have 18 Antminer s9si only have a 4 or 5 inch exhaust to get rid of the hot airi have tried the following for heat management: 1- installing an exhaust fan to the opening( building a box around the exhaust fan of the antminers to directly suck the hot air out )2- i have tried to install a y-exhaust tube to the 4 or 5 inch opening the the roof for an ac and the exhaust fan3- i moved the machines into a separate room with their exhaust faced outside the room(AC in the room) and had the box stated in number 1 outside the roomTHE WAREHOUSE TEMPERATURE IS STILL 42 DEGREES CELSIUS now i am thinking of evaporator cooling but i need suggestions on how to solve the heat issue any suggestions? which is more important 1-cooling the room2-getting rid of the hot air ?

### Reply 1:
You have to get rid of the hot air, and bring in fresh air. S9's generate 90 cfm of air flow each, if you can capture the hot air you can channel it to an exit point. Dont try and cool the room with an air conditioner, its better to use that power for miners. Evaporative cooling works, but it raises the humidity and can cause corrosion, although s9's may only be viable for another 5 to 8 months. If you have a ceiling vent you might try arranging in a circle and vent the air up, that takes advantage of hot air displacement, I have seen a number of large setups do that.just my $.02

### Reply 2:
Do you have outside doors, you can replace solid doors with metal bar'd doors. The problem you have is your pumping energy into the room, you have to remove the heat. You really have to vent the exhaust heat outside somehow, sounds like your over 105 degrees in the warehouse, which means you may already be looking at damage to the equipment already. I do believe you really have to get rid of the hot air, I have a few 100 of these running and there is really no way treat the hot air coming out of these units, you just have to duct it outside.

### Reply 3:
the problem is i only have a 4 inch diameter on the roof, and I am not permitted to make any changes to the ceiling i might try evaportative cooling in the open space in the warehouse (Not in the room where the machines are located) and also get a dehumidifier to get rid of the humidity how do you calculate how much humidity a evaporative cooler induces ??

### Reply 4:
okay there are some laws of physics.you have 18 s-9's each have about a 120mm hole and strong fans120mm = about 4.8 inches the area of a circle is pi r squaredor 2.4 x 2.4 x 3.14 + 18 square inches and you have 18 of them so 325 square inches is the smallest size for you exit holeyou have 2 x 2 x 3.14 = 12.56 square inches so you need to increase the hole 25 x and have fans to suck the air out.you need 2 of these <link> suggest you move the gear.

### Reply 5:
My problem is i only have a 4 or 5 inch hole in the celieng and i cant make any other holes or make this one bigger

### Reply 6:
Then you need to find another spaceCFM is CFM you're putting out waste heat, you MUST get rid of it, period.

### Reply 7:
Well... theoretically he could get by with the 4"" hole if he could move the air through it quick enough. Thinking along the lines of one of those gas turbines that power the old Batmobile...btw - I figured 300 cfm per S9, once you combine the effect of the 2 high speed fans, so he would need to move 5400 cfm through a hole with a cross section of about 12.5 sq inches. Doesn't that mean he would need the air to move at about 5400 feet per minute, abit over 60 mph? That would be amusing to see. Its only slightly below hurricane wind speeds.

### Reply 8:
Take out a window(s) and install exhaust fan(s) to fit the what should be a sizeable opening. No damage to building and when you move just have to replace the window.

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21833,"Date: 2017-11
Topic: Aintminer S9 setup in a garage? Please help
### Original post:
Hi, I am new to mining, and I am going to buy some antminer S9. The plan is to place the miners in my roomy garage, but my garage isnt ACd, I live in Atlanta, GA USA so we have 10 cool - cold months which are from Oct to May, and June to Sep is really hot, temperature is usually around 80- 100F mostly 90F. My garage doesnt have any window, so it could be hot during the summer, ( not as hot as outside) but i can open up the ceiling of the garage, and run some flex duct from the miner's exhaust to the vent on the roof, so that the heat from the miners can be extracted outside of the house, but I am glueless about how i can install an intake fan to my garage, since there is no window at all. I cant really install a window, since it s my parents' house. but the garage does connect with the kitchen which is ACd, but that is not an option also, since it would be too loud and affect our activities. I was just wondering if I could make a fan and some cooper coil to run iced water thru, in order for the fan to produce much cooler air and point the fan to the miner's intake, instead of installing a window. Please help, thank you

### Reply 1:
I think you can buy portable aircoin with 4k BTU will be enough or air cooler that you can put water and ice. its much cheaper.But if you really wanted to make your own with DIY cooper coil tube with fan maybe this video could help <link> noise of your miner there is a method in youtube called noise reduction that can reduce the noise of your s9 miner.. check this video <link> i think you can easily make your own just make the same as in video..

### Reply 2:
Thank you very much for your opinion

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13664,"Date: 2020-09
Topic: S17E / T17+ / T17 custom firmware - Free Download
### Original post:
Testing is startingOkay testing t17 and t17+We are also still playing with t17e as we have fan and volt control but no freq control.Learning curve on under volt under clock.but the next week will be 90f every day so now is the time to do it.I set the t17 to freq 580 volts 1640mvI set the t17+ to freq 585 volts 1660mv here is a good tune and a bad tune. it suggests raising 10 mv from 1660mv to 1670mv. I did 1665mv

### Reply 1:
Great work phill, why does it say ""failed"" when the miner is hashing and everything seems to be normal? what criteria does the firmware use to evaluate what is a good tune vs bad tune?Also, I am very interested in seeing how are you doing with power consumption comparison, assuming your goal is not a better temperature and you aim only for efficiency, would you still recommend the firmware?

### Reply 2:
Okay took me a while to understand terminology.Also we are doing 3 units.t17t17 +t17 eFailed means it is under tuning. I e it should do 50th and does 49 thtune okay means it is at or over the mark.I am going to fully rate and test the t17 today.after 10 minutes my latest test with a good meter says tune is okay.this is full size click to link: <link> projects that it should do3601836583 is what it did after 10 minute test that is higher then projection so tune is okaythis unit is set to freq 605 fans at 38% and mv at 1645 I did this to keep noise levels acceptable for my wife.full sized image: <link> I have an hourly meter that does kwattsat 4:50pm it read 91.28so 5:50 pm = ?it should do 40th at 2200 watts = 55 watts a thsince I am at 36.5 th x 55 = 2007-2008 wattsso the meter should move to 93.28 or 93.29 at 5:50I have found a 10 hour read to be very accurate for power use.temps are really good for 38% fan speed.t17 specs are from here: <link> am running the t17 at viabtcfull size link: <link> the 1 hour meter read.the 2 hour read is as follows94.98 6:50pm91.28 4:50 pm3.703.70 kwatts in 2 hours = 1.85 kwatts or 1850 watts36410 gh so1850/36410 = 50.81 watts a th. that is well under<rest of post truncated>

### Reply 3:
That's about 17% more efficient which isn't bad at all, I also assume you can get away with 30-40% less fan speed so that will get you another 20-30 watts of the initial consumption plus the fact that it makes the miner quite enough, you might still need a few physical modifications on miner itself, probably make a whole or two like thierry4wd's mod, or change these loud fans to some Delta fans since they make a lot less whining pitch.How long has this custom firmware been running stable for?

### Reply 4:
it would run in my garage for a few days.I just moved the t17 the t17+ to clifton and they are online with the t17eso far t17 great highly recommended software.I am looking to test the t17+ longer as it has some odd behavior.the t17e has only voltage and fan control it works well.Once all three units run over night in clifton I will post back.

### Reply 5:
Hi, first of all thank you for the very helpful review! at the moment i'm very ill, staying in the hospital, i don't have too much time or strength at the moment: but i'm trying to follow a little ...Concerning the T17 +, I am very surprised, because the mod is the same as on the T17, and I did not see any problem with it, can you tell me more about this strange behavior? I am very curious about this because very surprised!

### Reply 6:
Well Like I said the t17 is next to perfect 0 complaints .The t17e the volts mod and the fan mods work and it saves watts thus crashes less than the un modded t17e.So it is incomplete but good for what was done.The t17+ undertunes shows fail almost all the time.I keep playing with it but can not get a good setting so far.I did have a poor running t17+ So it could be the units issues not the firmware. I will try some more later today when the sun sets (3 hours from now)

### Reply 7:
Phill, please don't forget to update your T17e,T17+ and T17 results? Thanks for keeping the updates coming.I would also like to hear from thierry4wd why does the T17+ firmware differ from the T17 and what are these ""odd behaviors"", does this have to do with the fact that the E series uses less efficient chips and comes overclocked?I believe that the worst 17 series is the ""E"" versions, and then the ""+"" versions, the S17 is also a bad gear, the only good gear IMO is the S17 pro and T17 is not too bad, I also think that most of these gears run way more stable when underclocked rather than on default settings.

### Reply 8:
The t17 is great. I would tell anyone to try it.The t17+ is working poorly. But to be fair it always worked like shit so I am not sure if it is a bad unit.The t17e has volt and fan mod. He has yet to fully fix freq. But I have been busy.I will mod my second t17 .I will mod my second t17e even if it is only volts and fan.

### Reply 9:
I think I remember you mentioned about one of your T17+ that has<rest of thread truncated>
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4217,"Date: 2012-11
Topic: High Efficiency FPGA
### Original post:
Please stop spreading FUD. BFL does not now nor has it ever employed shills. Furthermore, I'm getting really sick of the rhetoric about where BFL's funding comes from. You know exactly nothing about BFL's finances, so please stop talking like you know anything. Unless you can provide some proof to back up your BS, stop spreading it, especially being a moderator... or is there actually some validity to the bias accusations?PS - the burden of proof is on YOU. You're the one making the accusation.

### Reply 1:
Then what are you? You are employed by BFL, yet your sig and user profile are conspicuously absent of any mention of your employer. Yet here you are again, defending, and even speaking for BFL. If you're not going to post as BFL_Josh, then you're nothing more than a shill yourself, which makes your statement above false.

### Reply 2:
Syke, again you fail Jr. High School vocabulary. So sad. Please learn basic English before engaging me in the future, thanks!

### Reply 3:
Josh, you *are* a paid BFL shill. If you are talking as a BFL employe, please use your other BFL Josh account. And answer the questions on the other threads that you are trying to dodge...

### Reply 4:
He can't be a shill, he is a known employee.

### Reply 5:
Inaba doesn't qualify to be called a shill: its public hes a BFL employee.

### Reply 6:
Please excuse this intrusion into Tom's thread, but BFL keeps getting brought up as being responsible for any negative post against Tom. Aside from Tom & Inaba's personal sparing, BFL has no bad feelings for bASIC. We welcome Tom, Avalon and others into the market and look forward to friendly competition. It will only benefit the consumers and the bitcoin community overall.For the record... Mesarah has nothing to do with BFL and we don't appreciate the mudd slinging. There's been well over a year of pleasure trolling at our expense and with moderator involvement. This has had a negative impact on the value of these forums. We've tried not to engage it and as a result have mostly left the forums to take their own course. I think most people would agree with me that the signal to noise ratio has worsened considerably as a result.Please be fair when that crowd think takes on other targets... and don't assume BFL is the source. We're not. Having the moderators carry this assumption forward is doubly bad. With a fair approach, we can restore the value of these forums, but it's going to take some effort and fresh thinking.

### Reply 7:
I strongly agree with this. Most members posting here are unlikely to be unaware of social and professional ties any prominent members of the community hold.While obvious disclosure is nice, it should be no means be a requirement.Edit: I'm also updating the FAQ more at the moment

### Reply 8:
what if mesarah is inaba's alt account?does that mean mesarah is paid by bfl?/tinfoilhat

### Reply 9:
If I'm a known BFL employee, then I by default can not be a shill. Please learn the definition of the words you use before you try to use them. I'm sure it was cute when you were 10 and tried to use big words, but it's not cute when you are a (seemingly) adult and trying to hold an adult conversation... it just makes you look stupid.I have never tried to hide my employment with BFL and everyone in this thread knows I am employed as such.

### Reply 10:
Some people know. But there are plenty of other readers of this forum which are not aware. You don't list it in your sig. You don't list it in your profile. You don't even post as BFL_Josh any more. In the past month you've posted roughly 250 posts as Inaba, and 0 as BFL_Josh.You're doing it right now by not using your BFL account. You're hoping some people won't notice the BFL affiliation. And you're right. Some people don't know.

### Reply 11:
Let me put it a different way, and provide a lesson in adult interactions while not accusing Inaba of any particular motive, which I cannot guess with <truncated> when I see employees of vendors that I work with in forums and blogs, they make a point of showing their potential conflict of interest, and are up front about the fact that these are their personal opinions when appropriate. You have a historical post I saw that explained the difference between the accounts, but it's impossible to find unless you know where to look, a link to this in your signature might be nice. At a minimum I recommend at least a brief disclaimer (I work for BFL but speak for myself?) to assure that we don't have confusion by someone working on post number 6 or something.Thanks everyone,Back to our regular show?

### Reply 12:
Again, you seem to have trouble with reality. You have absolutely no idea as to what my motivations are, so quit spewing your BS everywhere. Please, just stop being an idiot for 24 hours, see if you are capable of that. I seriously want to see if you can go 24 hours without putting fingers to keyboard to make a proclamatio<rest of thread truncated>
",[]
4069,"Date: 2012-04
Topic: Cyclone V now shipping!
### Original post:
I've just found this news in my email.239$ for 150k LUTs part. Looks VERY promissing.<link> out of stock...Altera always have been a little bit expensive than Xillinx, so Artix7 200k may be with same or little lower price. This is gona be madness makomk:Considering your 27.5 MH/s what is your estimation on this? 2x200MH/s?

### Reply 1:
So, slightly higher per LUT but it should have lower power consumption? I wonder if we'll see a clockspeed bump with the shrink from 40nm(?) to 28nm. Hopefully the new FPGAs will drop the MH/$ costs for FPGAs so I can start mixing these in to the GPU farm.

### Reply 2:
Cyclone IV 115k LUTs is priced at 315$. So, this is much cheaper per LUT! Speed bump should be quiet significant becuse CIV are made at 65nm.

### Reply 3:
Artix 7 should be cheaper than Cyclone V, because Xilinx claims Artix 7 matches its predecessor's performance (Spartan 6) but sells at ""35% its cost and is twice more energy efficient"" (can't remember where I obtained this info, I just jotted it down a while back). That said, please do keep us informed about performance numbers you may achieve...

### Reply 4:
Not exactly as you quoted.<link> and offers over two times the capacity, 30% higher performance, 50% lower power consumption -- and logic up to 350K logic cell density at lower price points than Spartan-6 FPGAs.""

### Reply 5:
What kind of mh/s?

### Reply 6:
makomk achieved 27.7MH/s from CycloneIV 22k part. My quess is that is 220MHz core rolled 8 times. Fully unrolled core fits to 75k Cyclone. That gives two cores on 150k part and propably at 300MHz (28nm vs. 60nm), so 600MH/s may be possible...

### Reply 7:
Don't forget that eldentyrell was able to squeeze 3 unrolled cores onto a 150k part, although currently not getting a huge difference in speed (might later though, after some optimizations). Is there a 200k LUT part available? Might be able to fit 4 cores on it for 2 bitcoin hashing stages, instead of an odd 1.5 stages.

### Reply 8:
3 unrolled cores? afaik 3 cores with 0.5hash per cycle

### Reply 9:
Spartan6 differs from CycloneIV. In first one only half of ""slices"" have carry chain logic that is very important in implementing adders. In Altera products every LUT have carry chain. Thats why you can put fully unrolled core to Cyclone 75k part and you need 150k part from Xillinx to do the same. Artix7 will have carry chains in every LUT, but ALM in CycloneV will have a LUT and an adder. It's almost impossible to direct compare this products when comes to predictions. Either way >2MH/$ from FPGA's is comming

### Reply 10:
Yes, that's what I meant, but it's better than 2 cores with 0.5 hash per cycle.

### Reply 11:
How much and when can I get it?

### Reply 12:
afaik other Spartan6LX150 miners have 1core with 1 hash per cycleonly eldentyrell has 3core with 0.5hash per cycleyes its true 1.5 is better then 1,i am sure there are more people trying to workout this nice 3core solution, i think its only a matter of time

### Reply 13:
Got a reference for this please? I have not seen any publicly available HDL code for the Cyclone IV that needs fewer than about 100K LEs (fully unrolled). This includes the code on fpgaminer's github (which includes some of Makomk's work) as well as Ztex's code.

### Reply 14:
The makomk based code fits into ~80K-90K LEs unrolled, if I recall correctly. Though it has been awhile since I've compiled that code, so it might be less

### Reply 15:
<link>

### Reply 16:
Thanks for the reference. Unfortunately, the URL to Makomk's code in the message you referenced does not exist, though perhaps his code is reflected by the DE2-115-makomk-mod branch of fpgaminer's code. I just compiled that code with LOOP_LOG2 set to 0 and found that it compiles to 77,724 LEs/Fmax=109.84MHZ with the provided project settings, so probably 75K LEs can be achieved by optimizing for density (though this would reduce Fmax). The only problem with the theory that the 5CEA7 (Cyclone V with 150K LEs) could challenge the LX150 is that even if you did manage to fit two fully unrolled loops into it (it's quite difficult to fit the last 10%), I would be surprised if you could get Fmax over 100MHZ due to the difficulty in efficiently routing such a design. And in terms of MH/$, I just don't see it happening given the significantly lower cost of the LX150s ($160 vs. $240 for qty 1). Depending on Altera's pricing on the 5CEA9 Cyclone V's (300K LEs), there may be more potential there (whenever they become available).

### Reply 17:
I wouldn't be surprised at all if a C5 with 150K LEs will do ~300MH/s (dual hasher design). In fact, I'd be disappointed if it didn't. Even a C4-150 is likely to do 200MH/s using a dual-core makomk core, a UART for communication, and removing the first three rounds. Cyclone chips have a lot better routing than Spartan-6. Immensely so. And it's a real shame, because the Spartan-6 has a lot better support for adders. Qu<rest of thread truncated>
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20974,"Date: 2016-03
Topic: Electrician claiming can't use 80 amp breaker for multiple outlets
### Original post:
I have a Electrician who claims I can't have multiple outlets to support multiple miners on 80 amps and that I need 15-20 amp breakers for each outlet/miner.We argued about it for awhile and he basically said he knows best and he is right without any real explanation.Could anyone explain this to an idiot like me? He is licensed..

### Reply 1:
Im guessing it would be a safety issue, but why not give you an explanation? Do you know this electrician? If not find another one

### Reply 2:
its more of the fact of the cable/wire that has be to used for the 80amp breaker. as the amps go up the cable gets thicker. therefore an 80amp breaker wire wouldn't fix in a standard 110/240 plug. you wouldn't be able to split the cables down to make them fit a plug.your better off following the advice of what he is saying. I run a 20 amp plug/fuse for each miner its a bit overkill as the s7s only run at about 12amps but the extra room lets me plug in fans or switches as needed.basically you cant do a 1 to many. it has to be a 1 to 1. depending on the miners you might be able to do 1 to 21 80amp to many miners on many plugs = no1 15 amp to 1 plug/miner = yesor1 20 amp to 1 plug w/ 2 miners plugged in = yes

### Reply 3:
Well if you have an 80 amp sub panelYou can add four 20 amp breakersOr add four 15 amp breakers and one 20 amp breaker.Now you left out some info which would be is this 80 amp to be all miner and is it a sub panel and is it 120volt or 240 volt.

### Reply 4:
I highly doubt your wiring is up to 80 amp's.... I would guess he checked what gauge wire you had ran in house and based it on that. 80 amp's on a single breaker is a LOT in most houses. If you are in a residential house no one builds 80 amp breakers.30 amp 240 is a pretty good number and can do multiple lines instead of one big one. But again if your guage wire is not good enough for above 20 amp..... hes saving you from possible electric fire.You can always get a second opinion after arguing..... i personally would not pick him as your guy. And next time try not to argue or get in a heated match it does no good. I wanted 1 20 or 30 amp 240 watt line ran about 10 feet from breaker..... electrician gave me over a thousand dollar quote for maybe 50-75 dollars in parts. Instead of arguing.... I let him go. I could have called him out on it but what good does it do at the end of the day?

### Reply 5:
There is no such thing as a standard electrical outlet that will support the wire that MUST be used on an 80-amp circuit, though there might be specialty stuff that can do so - but you can't plug a miner into such specialty outlets.Subpanal is the SAFE way to split out the capasity of that 80 amp circuit.I'm not sure if there is such a thing as a NEMA-spec outlet for anything over 50 amps PERIOD (I am very familier with the ones used for older mobile homes, which are no longer acceptable under the NEC for NEW installations but are acceptable in many or most locations for existing mobile home installations and for use with RVs).

### Reply 6:
80 amps is much power, needs thick wire. Outlets in wall made for less power, thin wire. 80 amp in thin outlet wire make big fire. Best to split in subpanel to send less power through wall to outlets.

### Reply 7:
Hahaha, thanks OgNasty. That made it very very clear.

### Reply 8:
Thank you.We got it figured out, he will be adding a sub panel with a bunch of 20 amp breakers. I had taken bad advice from someone and only found this guy online, so wasn't sure who knew what.

### Reply 9:
Did you go with electrician you got in argument with? Not sure that is the best idea.... but wish you best of luck on it.Was main full on spots? Or wanting to run one big cable and multiple smaller ones? What was reasoning in the end for sub panel.

### Reply 10:
I already said this above as it does no good. Even when I once got a horrible quote... i took quote and let him go. I was curious if OP went with one he arugued with, it almost sounded like he did.I'm not sure if I would go with one after a heated argument..... I think going with another would be best thing since cant really take a argument back.

### Reply 11:
It was not a full blown arguement, you adding insult to injury does not help the situation. (not to mention constant repeating of something that has been said)

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9907,"Date: 2016-07
Topic: Bitmaintech Europe??
### Original post:
Does Someone know this Store :<link> seems to be a Europe Office and Shop of Bitmaintech, but the Shop is very unprofessional... Is it a Company who claims to be, or is it real ?

### Reply 1:
Bitmain has only three official distributors outside of China see this post: <link> is not on the list.here are the three official <truncated> in Europe <link> in US <link> is the third, he is a member here without an online shop I can find.You might just buy directly from Bitmain in China.

### Reply 2:
That list of distributors are old, there is currently NO 'distributors' for Bitmain products despite what some people will say. There is no reason not to buy from Bitmain directly.

### Reply 3:
The reason is, there arme currently no S9 available at bitmain

### Reply 4:
hm it's not a part of what bitmain just bought ?. I wouldn't know because i would buy direct to by pass the middle man etc .

","[
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22334,"Date: 2018-02
Topic: Cannot Log into s9 Miner
### Original post:
Hi Everyone,I have an newly received s9. It's powered up and the IP address reports. When attempting to log into the machine using the IP, the Login and Password box appear as normal. However it will not allow me to login. Login failure.I purchased this machine new. The gent I purchased it from indicated he had tested it to ensure correct operation.I assume this gent may have modified the standard root root login and password.So I tried to reset the machine to factory settings by holding down the reset button on the S9 for 5 seconds. After doing this the machine does not appear to respond. I waited 10 min and tried again to login to the IP. Login failure. again.I tried this 3 more times with exactly same result. Is there any other reason(s) it might not login?I simply can't log into this Miner. Does anyone have any suggestions?Thanks in advance.

### Reply 1:
mhmmh, did you try hard reset via paper clip? Just by googling your problem you can find same problem someone else had already.

### Reply 2:
Hello I am following up on this. I got great feedback from <truncated> I was finally able to hold down the IP report button on the s9 and then power it up while continuing to hold the IP button for 10 more seconds. This finally worked and reported a different and correct IP address.Actually I was about to give up, and I had to try resetting and doing this about 7 or 8 times before it finally worked.So ultimately the machine has reported a false IP and after going thru the IP report button and re-powering it generated the true IP address.Thanks to ALL for helping with this.

","[
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21068,"Date: 2016-06
Topic: Help with BITMAIN S5
### Original post:
hey guys, im having a problem with my Bitmain s5.i made a video on youtube explaning the situation...<link> basicly the 4 lights that run the chips...i opened the machine and seperated everithing to see if something was wrong... nothing.please help me, if u want to troll in the comments please dont.Thanks

### Reply 1:
Just to get some info was it working and just stopped? You mentioned reset during video did this happen after a reset or was the reset an attempt to fix? What PSU are you using (looked like a nice EVGA but checking to be sure)? But I would check the connections just making sure they are snug. <link> show's how to test one chain and the other. So would start there. *Later EditIt's been a while since I have had a S5 on hand so looked at some other things. Which connector is fan connected to (hard to tell in video)? It almost looked to be opposite as in <link> will try to help some on here with what I see as possible problems. But if I don't hit the nail on head and catch what it is you might contact <link> on repair services if it ends up being in need of repair.

### Reply 2:
what is your psu?how long did it run for you before it died.minutes hours days weeks months?

### Reply 3:
Gotta agree that it sounds like a power supply issue, but as notlist3d suggests I would test one hash board independently of the other and see if one or the other is causing any issues.

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11034,"Date: 2021-11
Topic: Innosilicon T3 PSUs
### Original post:
Hi,Does anyone know where I can get T3 PSUs in the states? Need to replace some. Thanks.

### Reply 1:
check ebay! or reach out to a reseller. they sell psus.

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16693,"Date: 2011-06
Topic: x2 6990 + x1 6950 problems, help please!
### Original post:
Please remove the CrossFire cord/cable thingy and disable the CrossFire support. Please be aware that the card might be presenting both cores as a single device. My advice would be to compare the hashing metric to what you might expect from a 6990.

### Reply 1:
I dont have any cable or anything fisics between the cards, so fisics crossfire... I mean when I active the crossfire option in Catalyst software... seems to be for make both cores of 6990 work as one or something like that... Dont know really.Guiminer isnt presenting the 2 cores as a single device because mine just at 330 mhash/s so that in one 6990 is just one core running...

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17017,"Date: 2012-01
Topic:  PPS vs Proportional
### Original post:
That subject has been discussed to death so many times it's not even funny.The search function doesn't hurt.If not for pool hoppers, there should be no difference in the long run.However, on traditional prop pools the hoppers will take advantage of your steady work thus lowering your profitability.PPS, SMPPS, DGM, and PPLNS payout schemes are immune to hopping.Find a pool with low fees and preferably low invalid/reject count.Give BitMinter or Eligius a try, they are both 0% fee.

### Reply 1:
Thanks for the answer. I'm using deepbit so far and have 1.63% rejected out of 13436 shares. Should be good? I'll check if I'll have better income with BitMinter and Eligius.

### Reply 2:
I don't recommend you use Deepbit.However good/stable they are, they can't possibly make up for the 10% fee they charge the PPS-mode miners.Eligius is a SMPPS pool, therefore you will get very steady payouts - every single share you send will be paid for.While Deepbit pays you 0.00003597 BTC per share, current reward on Eligius is 0.00003997 BTC.How about you underclock your GPUs by 10%? No? Didn't think so. Then why stick with high fee pools?I'm currently mining at Bitminter and have only 0.13% rejected shares. That should put your 1.63% in perspective.Using BitMinter, you have to get ready for some variance. There can be days when no block is found and you get nothing.That shouldn't matter, however, as over time expected revenues from both Eligius and BitMinter converge on the same value.

### Reply 3:
I use Deepbit's proportional mode, lesser fee and higher profit over time than <truncated> PPS. What about classic proportional mode nowadays on other pools, it isn't that good anymore because of pool hoppers? And gives lesser profit overall than PPLNS and SMPPS?

### Reply 4:
Good for you but still that's 3% fee for the most primitive, proportional payout scheme.You'll be a sheep the pool hoppers thrive on. If that doesn't bother you, be my guest.As I said SMPPS, PPLNS, PPS, and DGM payout schemes were invented with the explicit purpose of being immune to pool hopping.No payout scheme should influence your revenue in any way. Some being more variance than others but all the differences average out over time.The only things which really matter are pool fees and stale share percentage.Some pools introduce fancy features to lure users: Triplemining has a 1 BTC jackpot every week. The only problem is, being one of the pool's 130+ active users there is no reason you should expect to win the jackpot this year. As I said, it's more of a lure than a tangible advantage.

### Reply 5:
Seriously stop using deepbit

### Reply 6:
No. Deepbit is awesome. It is the biggest pool for a reason. They should do a 51% attack to wake up the folks thinking ""don't fix the 51% vulnerability because it will not happen anyway"".

### Reply 7:
Pools will be the death of us all... and I regard Deepbit as the Mordor of all pools - can't expect anything good with all that amassed hash power.

### Reply 8:
The only reason I see is clueless newbies thinking a big pool has to be a good pool. Its insanely expensive, and if you use proportional payout like the OP, you are giving at least 20% of your revenue to pool hoppers.I can see why pool hoppers love it though.

### Reply 9:
I've tried bitminter's 12 hours run yesterday and earned 0.228347831 BTC!!! Holy shit! At average I should get 0.09 BTC for 12h with my 221 mhash/s. Maybe it was a lucky day. But most of them are unconfirmed so far until full block will be confimed I suppose.

### Reply 10:
That was quite a lucky day, congrats. Just don't expect the pool to keep this level of luck indefinitely.On BitMinter homepage, click Statistics -> Blocks to see how many more blocks you have to wait for your payout.Once a block reaches 2 or 3 confirmations, there is very little chance of it becoming orphaned.A block is considered fully matured when it reaches 120 confirmations.

### Reply 11:
On lucky days you may get 3-4x your average. On unlucky days you will get nothing. Thats not whats important, since it evens out, more important is that on average you will gain a fair amount more because of lower fees (well, none really) and you dont pay for the poolhoppers. And just as importantly, by joining a small pool, you help keep the bitcoin network more secure.As for unconfirmed, thats with any pool. As mentioned above, blocks only mature after 120 confirmations. Thats a bitcoin thing, nothing to do with the pool. Its possible a block will be orphaned, but extremely unlikely, and near impossible after a few confirmations. I dont think bitminter has had more than a single orphaned BTC block so far. Maybe even none, not sure.

### Reply 12:
btw, there are a few pools that are offering 105/110% PPSSo basically they are paying you 5%/10% to mine, rather than taking a 5/10% feeI am mining on p2pool. mostly because i like the ideathere is also btcserv that pays pps and ta<rest of thread truncated>
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15744,"Date: 2016-05
Topic: Mining: separating the steps (Coding)
### Original post:
Hi there,I'm a software programmer and I'm interested in the specific steps inside a mining client.I know i cannot efficiently mine with my PC but I'm interested in the steps to reproduce.I'm using BitcoinJ to develop a small program to decode the Blocks from the standard LevelDB that the bitcoin core client downloaded.If I understand it correctly, it's all about the 80 bytes header.The variable things are the previous block hash and the merkle hash of the transactions contained in the new block (plus time and nonce).So my first question:Can a miner simply select some of the pending transactions to be included in the new block (=> the merkle hash)? How are the solo mining clients doing this? Do they ask for a new block (as I could do in the debug console of the core client) and try to make it fit (by adjsuting the nonce ) or are they aware of all pending transactions and puzzle them together until it fits?Thanks in advance,Astaldo

### Reply 1:
It is entirely up to the pool operator or solo miner to select which transactions to include. A pool, or solo miner, is aware of all transactions in their mempool. They build a block from these transactions and then start looking for valid hashes. So what goes in a block depends first of all on what the solo node or pool has accepted into its mempool and then on which transactions they selected from their mempool. If you want the details see <link> only restriction on blocks is that pools or solo miners must only build a block that will be accepted and relayed around the network. For block rules see <link> what mempool will include see such parameters as mempoolexpiry, mintxfee and <truncated> 'Miners' using a central pool only calculate sha-hashes as directed by the pool operator. They do not know block contents. A hardware miner such as an S7 is simply calculating sha-hashes values for the pool operator or solo miner.

### Reply 2:
Thanks for the info.Do you know the internal techniques of a solo (asic) miner?I realized they run with programs like cgminer and Im thinking about how they do the work.How do they put the pieces together when they do solo mining?Who is collecting the transactions to build the next new block?Is there any chance I could realize that Im not working on the same block than someone else?

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4258,"Date: 2012-12
Topic: Bitcoin/Litecoin FPGA question for project
### Original post:
How would a person in theory interface a fpga board into the ltc/btc network? I have a friend who works on vhdl and is toying with making his own fpga and we cant seem to figure out how to get his cyclone III dev kit to interface on the network.

### Reply 1:
I don't really know anything about the design of FPGA miners, but I know most (all?) of the existing ones plug into a host computer via USB and the host takes care of connecting to the network/mining pool and just sends the FPGA the data to be hashed.

### Reply 2:
Would it be easier to do via ethernet?

### Reply 3:
It takes a fair bit more work to add direct ethernet capability (although certainly possible).You'll need a microcontroller to handle the IP/TCP/DHCP configuration and shuttle data to and from the FPGA along with processing work from a pool and submitting completed work. It's a fair bit of overhead (for a uC) normally done by the CPU on the host computer.Also you'll need some way to configure it for debugging, changing pools, static IPs, etc.

### Reply 4:
The easiest way would probably be to use pins from your fpga to make a RS232 (serialport) interface.Then look in the source code of a miner that can use fpga's or find on the web or this forum what bytes you can send/receive and use that.The difference between bitcoin and litecoin is very small (looked at from the mining software/hardware side), both have a 80 bytes block you have to hash, both have a 32bits nonce at the same place, the only difference is a method used for hashing.

### Reply 5:
Would RS232 be too slow?

### Reply 6:
The block to hash is just 80 bytes with an average of 1 4 byte nonce for 2^32 hashes.With a little protocol overhead, lets say 115 bytes/block, you can do 1000 blocks/second.2^32 * 1000 = 4.2 THash/s.

### Reply 7:
It has two USB ports, but in a really sucky configuration. One is FTDI and one Cypress; and they cannot be operated at the same time. FTDI is used almost exclusively because it is the easiest supported way to tap JTAG.There are some serial-over-JTAG drivers available in the NIOS II development kit, so it is doable. But it is a great PITA. Or one could use external JTAG, but this is also a PITA.

### Reply 8:
No, RS-232 is typically 115 kbit/s, not kByte/s. Therefore: 125 blocks/s.You could also implement roll-n-time on the device, and return to the host shares with difficulty > 1. So, all in all, it is hard to put an exact number on what is doable on RS-232, but it would be sufficient for many tens of TH/s.But seriously guys, I don't see the point in using RS-232. USB is trivial to implement with supporting microcontrollers. Which is why ALL FPGA miners use it. The Altera Cyclone III dev kit supports USB if I am not mistaken.

### Reply 9:
How would the USB implemented on the FPGA? Are there any good free USB cores on the net?

### Reply 10:
I think it is too complex and would require soldering. If soldering is acceptable then just solder in any USB-RS232 serial cable.In my limited experience UDP broadcast over Ethernet would be easier, simpler to debug and use less logic resources than instantiating some USB device core.Personally, I would use external USB-serial cable connected with 3 bent paper-clips to the appropriate header. Looks hilariously ugly, but works quite reliably. All my desktop machines have serial ports, either on the motherboard or expansion board, because I haven't yet met a device I couldn't tap some UART via bent paper clips or wires wrapped around needles or by hacking some cables.Edit: I suddenly realised that the above may be read by some absolute beginners. In that case: please remember to watch the voltages. RS-232 default voltages may fry your expensive development kit if improperly connected. Be mindful of that. Cheapest multimeter and RS-232 - TTL level shifter is all you need to avoid releasing the expensive magic smoke from your FPGA.

### Reply 11:
where is the part in the code of one of the miners that can be changed for rs232 communication instead of starting processing on cpu/gpu? if anyone knows....

### Reply 12:
The production mining software changes too rapidly for me to understand. You'll probably have to look at some previous version of CGminer or BFGminer, when they were still using serial ports instead of raw USB devices.Besides, the above software is just too complex.Start with something simple like ZTEX's miner or jgarzik's/pooler's cpuminer. Or hack out the signcryption out of eldentyrell's miner working through the JTAG taps. You'll initially want to mine on the CPU in parallel to be able to quicky compare the output from your FPGA with known good results from another source.

### Reply 13:
I would really recommend writing your own CPU miner first, to get a better idea of how mining works.Shouldn't be more'n a few dozen lines in a decently high-level language.

### Reply 14:
The running in parallel is a good idea, thank<rest of thread truncated>
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    ""hardware_name"": ""Cypress"",
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    ""hardware_name"": ""JTAG"",
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    ""hardware_name"": ""USB-RS232 serial cable"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""Altera Cyclone III dev kit"",
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    ""hardware_name"": ""USB device core"",
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13414,"Date: 2015-07
Topic: BFGMiner 5.2.0: Zeus X6 Lightening PSU Issue - MINING KILLER!
### Original post:
Hello,has anyone had any trouble with driving their Zeus miners with the latest version of BFGminer? I just upgraded (not so far) from ver' 4.2.1 to 5.2.0 which also uses slightly different syntax in the command line.I am mining via nicehash.com and with version 4.2.1 there are no issues when starting or running the mining program.But when I start mining with ver' 5.2.0, my psu's overload and quit! It seems that 5.2.0 is causing a huge power surge at startup where previous versions are totally fine and cause NO issues at all!Anyone got a fix for this issue?I'm sure it's a programming error somewhere in the startup code. Or are there any commands I am missing? I used the command line suggestions for ASIC miners in the readme-ASIC txt and all commands are correct.I don't see anything in the commands to cause or prevent this startup overload issue.The reason I am trying to use 5.2.0 is that nicehash wants me to use their extra nonce command #/xnsub command for better efficiency and I guess a few more accepts per cycle than without it.Thanks for any advice or suggestions you may have in advance!

### Reply 1:
Sorry guys, here's the command line I am using....bfgminer --scrypt -o <truncated> -u yeahtryit -p d=1024 --set zeusminer:clock=151 -S <truncated> -S <truncated> -S <truncated> --set <truncated> names have been changed to protect my ars from hackers

### Reply 2:
Why not try setting per miner and use PI's as your controllers or one rasp pi ? windows 10 is due out on the 29 th and has a PI 2 version you might want to look at if you want windows as your miner/controller and look at minera ? .I use 5.2 on my cyclone and it runs way better now that minera fixed it's Calculation issue no over heating PSU never had that issue any way it just runs a lot better with 5.2 holds a steady 21 to 23 MH at default setting. why even over clock any of them sense Ive found OC is just a waste of power there not worth OC, if you are.--scrypt -S zus:all --set zus:chips=96 --set zus:clock=330 for the cyclone or T X2 .per miner setting with minera or without --scrypt -S zus:/dev/ttyUSB0 --set zus:chips= --set zus:clock= -S zus:/dev/ttyUSB1 --set zus:chips= --set zus:clock=I'm real amazed the above setting even work and don't over heat every thing. you have set .I'm not even sure what Zeus has 213 chip per miner and runs with no clock set very well or clock set at 151 The clock setting i know of are 240 to 345 safe clock setting that depends on the miner for best results with any version of BFG miner that supports ZeusMiners.some setting in older version of BFG yo<rest of post truncated>

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16335,"Date: 2022-09
Topic: Bitcoin Mining Machines and ASICs (Hardware)
### Original post:
The foundation of the Bitcoin network is bitcoin mining. Bitcoin transactions are confirmed and secured by miners. The network would be under attack and unusable without bitcoin miners.Since it is currently not possible to mine Bitcoin with a standard computer or laptop particularly profitably, you will definitely need a special piece of hardware called an ASIC.Bitcoin miners realized that graphic cards could provide extra hashing power. Graphic cards were surpassed by ASICs.Integrated Circuits with Specific Applications: <link> a Bitcoin ASIC to be specialized Bitcoin mining hardware, such as Bitcoin mining computers or ""bitcoin generators."" All significant Bitcoin mining these days is performed on specialized Bitcoin mining hardware ASICs, usually in <truncated> data-centers with low energy consumption.For this reason I have saved 5 best mining hardware according to my opinion. Hope you choose the best mining hardware.Antminer S19Antminer S19 ProWhatsMiner M30S+Whatsminer M30S++Canaan AvalonMiner 1246Comparison of Bitcoin Mining Hardware. Miner Hash PowerAntminer S19 95.0 TH/s Antminer S19 Pro 110.0 TH/s WhatsMiner M30S+ 100.0 TH/s Whatsminer M30S++ 112 TH/s Canaan AvalonMiner 12<rest of post truncated>

### Reply 1:
Why not just use a tool like this one <link> then you can compare all ASIC miners and one click and you can also see what is more profitable than the other units. The other thing is that units from Bitmain are a bit expensive compared to Canaan units I don't know about Whatsminer or MicroBT it seems I can't access their website anymore and I think it is more expensive than Bitmain and Canaan units. Why not add the price from your Comparison so that it would be more useful to newbies who found this thread?

### Reply 2:
A price tag would be most beneficial, because sometime is always goes back to how much you have budgeted and can afford to spare for the equipment. If it is still possible please add estimated price tags to improve the quality of this topic.

### Reply 3:
I think you need to make it clear what standard you use to list them as ""the best"". Do you use the list from another website as mentioned by bitmax, or is there another source for it? I think you can also add how easy it is to buy them for overseas miners (outside EU or US) for example, so your list can be more distinct compared to others.

### Reply 4:
The' Best' all depends on the buyer - not some random person's thoughts... Most hardware guides here are pretty clear on that: 1st pick your criteria and choose from either speed, efficiency or, service life and go from there. There are no miners that are the top in all 3 areas.Personally I use service life as my #1 and that means any of Canaaan's Avalon miners.

### Reply 5:
In normal use, according to your experience, which ones get less issues? Antimners or Canaan?

### Reply 6:
Canaan are WAY more reliable then Bitmain. BUT, dollar for hash and power for hash they are a little less efficient. It really becomes tough call with a lot of variables, if you have inexpensive power that you think will stay that way for a long time, then the Canaan are probably a better buy.If you can't be sure of your power costs down the road then a bit cheaper machine that is a bit faster might serve you better since you stand a better chance of RoI and profit.With that being said, anything can happen, the 17 series from Bitmain was a disaster for a lot of people. I have one in a rack that was out of the 1st or 2nd batch running with no issues since it was dropped off.-Dave

### Reply 7:
Exactly, why not add price, Th/$, J/T , availability of the gear, and so on? And why the hell would the S19 (95Th) be ranked number one right now? Viabtc has a $ 0.075 per Th/s, the gear will earn you $7.12 while burning 78 kWh with no loss or fluctuation or cooling, at 9cents per kWh you're just running it at zero profit, at 3 cents you're looking at 5$. Why would this 34.5J/T be ranked first?

### Reply 8:
Where's the Antminer S19 XP in this list which should be on top ?

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  },
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    ""hardware_name"": ""WhatsMiner M30S+"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Whatsminer M30S++"",
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    ""hardware_name"": ""Canaan AvalonMiner 1246"",
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20603,"Date: 2015-09
Topic: Antminer S5 slow
### Original post:
Hi,Please help me !My miner performance from one day to the next halved.

### Reply 1:
What power supply are you using? This could be it.Or also look into <link> and <link>

### Reply 2:
Thank you, but these have all been tried.No change!

### Reply 3:
That screenshot has 21h run time. Did you try to power cycle it? My S5 regularly drop a board, though in my case that board drop in temp and power usage. Anyways maybe power cycle it and then post a new screenshot?

### Reply 4:
Please see diagram :

### Reply 5:
What PSU are you using you never told that? This could cause only one depending on which one.What brand and how many watts?

### Reply 6:
IBM 2000W server PSU. There are two pieces, both tried.Current status:

### Reply 7:
you can contact Bitmain's Support in order to make sure what's the problem and how to solve it if it's possible.

### Reply 8:
That screenshot, OP, show you didnt power cycle it yet. You *really* should try that first and repost. But there is some hardware fault somewhere for sure with that 9%~ HWE

### Reply 9:
I wrote the Bitmain support. They said they send back to the board. To this it should be packed to avoid any damage?

### Reply 10:
Yes they check to make sure damaged/non working. So they want you to pack where it's not going to get destroyed in shipping.Were you still in warranty? If not can I ask how much did they estimate?

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22039,"Date: 2017-12
Topic: Mining Help, Help the Solo mining Newbies get started
### Original post:
So I have been investing in bitcoin for a while and I didn't have the funds to get started.Now I would like to solo mine. What I have been searching high and low for a proper tutorial, but I cannot find one. I also don't know jack about coding. Is there an actual tutorial or video link that someone can share with me to show me how to set it up from start to finish. From download to running the program. BTW I have Mac OSX, and a 2Pac Gekko Miner. So if there is a tutorial of how to set that up I would be even more grateful. Thanks guys in advance. Sincerely,Mining Newbie, BTC oldie

### Reply 1:
2pac Gekko miner? thats f*cking old device miner, i think your hashrate not enough to start solo mining. im recomended to mining new altcoin with basic scrypt algorithm, so you can earn more coin, is better than you try mining bitcoin.

### Reply 2:
Even doing that. I would need to learn how to do that from scratch. And I still cannot find a tutorial video of how to get started because they all assume you are pool mining. Thus, My question still stands. Is there a video out there to learn how to do it or a person that can guide me through it?

### Reply 3:
Solo mining is the same as pool mining. Just replace the regular pool with the solo pool ""solo.ckpool.org"". Using that solo pool would be better than solo mining on your own machine.

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20502,"Date: 2015-07
Topic: Solo mine with 0.10.2.2
### Original post:
I used to solo mine with the older bitcoin wallet but now that Ive updated to 0.10.2.2 I can not. Nothing else was changed on the computer other than the updated Bitcoin Core. Was something changed with this version to disallow mining? I get an error about the username/password being wrong however it was not changed and I can confirm its correct.Thoughts?

### Reply 1:
Have you checked the config file? It could of over wrote it as I am sure there are new options.

### Reply 2:
i dont have a solution, sorry just a question, are you just mining with your GPU?

### Reply 3:
I have checked the config, its intact and correct.No I am not mining with GPUs.

### Reply 4:
In the new version you have to specifically allow IP addresses, you can't do *s anymore. You might see if that's the problem.

### Reply 5:
it isn't disallowed <link> you solo mine, please switch to Bitcoin Core 0.10.2.

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23079,"Date: 2019-09
Topic: 1 240V 30 AMP circuit: Can I do 3 Antminer S9's and 1 S17 on this circuit safely
### Original post:
I have 1 circuit 240V 30 AMPs with 4 outlets:Can I power:3 Antminer S9's in Low Power Mode unchanged Hashrate (Not Enhanced Low Power). These will take up 3 outlets. 1 Antminer S17 in Normal Mode, plugging in the 2 power cords to a 14 gauge PDU connected to 1 of the remaining outlets?I know the S9's realistically pull about 7 amps? Not sure about the S17 though.Any advice is appreciated. Thanks.

### Reply 1:
For continuous loads, you should not exceed 80% of the circuit rating. If your s9s are pulling 1200W in low power mode, and the S17 is pulling 2385W in normal, that is 5985W, or 5985/240 = 24.9 Amps, which is over 80%. In reality, it will probably end up being higher than that, so not a good idea in my opinion. Best to consult an electrician.

### Reply 2:
You can not do it.you could most likely do 2 s9's and 1 s17. Depends on your voltage. ie 208 maybe 220 to 230 most likely240 yes almost <truncated> = 4625/208 = 22.24 amps which is borderline4625/240 = 19.27 amps = no issue

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22624,"Date: 2018-06
Topic: 4 pin fan for antminer
### Original post:
Can any 4 pin 4 wire fan work on antminers

### Reply 1:
I'm not sure what you mean by ""any"", but you need to make sure you have the right specs on the fan. I believe itsa 12v, ~3amp 120mmx120mm - could be wrong on the amp for the fan though.<link> is the one that they sell on Amazon.

### Reply 2:
I've got a bunch of pulled fans from S5 and S7 if you're looking for a stock replacement. If you're trying to make a miner quieter, good luck.

### Reply 3:
I have 1 Hashboard and 1 controller with 2 fans, something has to be plugged in the fan sockets or it wont turn onI have it in the lounge and its quite as a lambWith an ordinary 500 watt power supplyblowing on the boardIts such a waste the fan on the supply goes nowhere so ive turned it on the hashboardIts whats called open plan (there are no covers like a gpu miner)Works a treat and decibels in the 40 and temp is 55

### Reply 4:
NO!As has been said elsewhere here in far too many threads, from the s7 on up all Antminers require fans that deliver high-static pressure and yes that means LOUD ones. CFM is only a small part of the airflow spec and normal 'high CFM' fans only deliver spec'd airflow against zero back-pressure. Put them on a s7/s9 etc and airflow drops like a stone very quickly leading to an overheated miner.

### Reply 5:
I know this is an old thread, but found it looking for info on the fans. Do you know how it works specifically for the S9? Which fan needs to be faster - the front or the rear one?I noticed the different fan speeds, so I assume the reason is to create either negative or positive pressure inside the miner, I'm just not sure which one. Also not sure if they are controlling the fans separately to create the different RPMs or together, and let the different RPM ratings of the front and back fans take care of the pressure difference.Any insight into this would be appreciated.

### Reply 6:
I believe the front fan needs to be faster, although the fans are practically interchangeable (?). I use the same spare fans for front and back and it seems to make no difference.

### Reply 7:
The 4 pin is not essential unless you want fan speed control. What others here said is correct, you want to meet the spec of the fan to replace. A 3 pin fan with same or similar specs will suffice you just won't be able to the control the fan speed.

### Reply 8:
Thank you. Actually, the front and back fans are different (different model/part numbers). I don't think swapping them or replacing one with the wrong part number (as long as they move enough air) will kill the miner but may be non-optimal.

### Reply 9:
1st, Kudos for recycling your question into an existing thread! Keeps the relevant info easier to find. As for front/rear speeds, even Bitmain can't seem to make up their mind. As a power systems designer, personally I'd put the faster fan on the intake side to provide higher pressure airflow in to overcome resistance from the turbulence all the little heat sinks make. What might change is the noise.

### Reply 10:
It's too hot where I am and I'm trying to cool the miners as much as possible. Noticed that my old S9s (with the Delta fans) don't run the fans at full RPM even when the chip temps go over 100C. So I want to hack the miner to have the fans run at full speed all the time - I just want to make sure I understand what I'm doing.I'm not an expert of fans, just trying to figure this out. Since these are 4 wire fans, I assume black = ground, red = input voltage, yellow = PWN (tach) out, blue = PWM input (speed control). What I'm not sure about: 1. If I simply cut the blue wire, the fans should run at full RPM all the time, and since the miner will still receive the PWM signal from the fans, it will operate normally (won't assume fan failure and stop mining). Is this correct?2. As the S9 uses PWM speed control, I also assume that the fan receives the full 12V input voltage on the red wire from the control board all the time, i.e. voltage is NOT used to control fan speed. If this is true, then ideas I heard about connecting the fans directly to 12V from the power supply should make no difference and this is unnecessary. Is this correct?

### Reply 11:
Thanks for the info! Good to know. I know they have different fans, but I don't know yet which one is faster (can't find the specs for their fans - mine have NIDEC UltraFlo W12E12BS11B5-57 on the front and NIDEC UltraFlo W12E12BS11B5-07 on the back) and the UI doesn't tell you which one is front and which one is back.

### Reply 12:
Maybe.There are 2 control methods, one is no signal on Blue = full speed which in my book is the safest, the other is no signal = lowest speed. Looking up the fan specs should say which they are.I've never played with the fans so just cut the blue on one fan and see what it does, you can always splice the wire back together if it slows down. Beyond that setting min fan speed to 100% - should - force them to alw<rest of thread truncated>
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9021,"Date: 2015-04
Topic: Antminer S4 - dropping connection
### Original post:
Hello All;I have 3 Antminer S4's. (Specs below) S4 #3 is having problems (other 2 functioning fine). Was hashing fine, then started showing a very low hash rate on the pool stats, in spite of the miner showing normal hash rate on both the miner digital readout, and on the stats page of the admin GUI. Given that in troubleshooting the issue I have difficulties connecting to the unit via browser interface, I suspect it may be having connection issues, causing a low hash rate.I have changed out the network cable, and reset the machine to default settings via the reset button. Rebooted numerous times, all efforts have failed. I have downloaded the update software, however the manual doesn't go into detail on how exactly to preform the update. The questions I have are... which file to load (there is the downloaded <truncated> file), then I assumed that needed to be unziped, so I did, then there was the ""tftp.tar"" file, so I unzipped that to reveal 4 more files: initramfs.bin.SD, runme.sh, u-boot.img, and uImage.bin. I don't know which of the file to load.Also, once I know which file to load, I was concerned that if its losing network connection, what will losing network connection durin<rest of post truncated>

### Reply 1:
Please use the most recent S4 firmware. Your system uses firmware from October of 2014.<link>

### Reply 2:
That's the same file I just downloaded from the Bitmain site. Do I use that file as is, or does it need to be unzipped? AND... do you think it will have an affect on the issue I'm having ?

### Reply 3:
It comes zipped. Unzip to folder then search through ant gui firmware update for the tar.gz file.

### Reply 4:
OK... I think I got it flashed. New specs below. However, still hashing very low on pool dashboard, in spite of the miner stats page showing otherwise.S4#2 hashing @ 2008S4#3 hashing @ 181Hardware <truncated> VersionLinux 3.8.13 #22 SMP Tue Dec 2 15:26:11 CST 2014File System VersionThu Jan 29 20:48:50 CST 2015Cgminer <truncated> Average1.39, 0.63, 0.24

### Reply 5:
What pool do you use?

### Reply 6:
Bitcoin Affiliate Network. I tried posting a graphic but couldn't seem to get that to work. Clicked the graphic button, and tried to paste an image between the Image tags, then tried copying the file between the tags and no go for both.Also, network connection seems to be marginally better, but still nowhere near right. Other miners functioning fine still ( I flashed them also just for good measure).

### Reply 7:
Check to see if all your network settings are the same. Dns and such. Also check to make sure your workers aren't the same. Some sites allow for same worker. Do you use a static ip?

### Reply 8:
The only thing that is in ""Network Setting"" tab is: hostname = antminer, and protocal = DHCP. The rest of the fields on that screen are blank. This is the setting for the other 2 S4's also, and has been like that since they were set up over 3 months ago. Again, other 2 miners working fine (as this one was before I noticed a significant slowing of the hash rate starting a few days ago). I have my workers set up as *S41, *S42, and *S43, to represent miner 1, miner 2, and miner 3. It's miner #3 I'm having problems with. I still think it has something to do with network issues within the miner itself. I can connect to the other 2 miners at will, but that 3rd. miner is hit and miss on connecting to it, and mostly misses. Sometime it takes multiple tries before it will connect, then it will cut out and throw a timeout error while I'm on one of the admin screens. However, all 3 miners are connected to the same network switch, and as I mentioned earlier, I have changed out the network cable, and moved the 3rd miner to another open port, but nothing changed. I think it has to be something in the miner dropping the connection. Anyone know if something like that is repairable ? Is there some <rest of post truncated>

### Reply 9:
Check Miner status page and verify all your asic chips are functioning. This will be displayed with the lines "" ooooooo oooooo oooooooo. If any show an x or - try rebooting.

### Reply 10:
I believe you have an ip conflict. Try running your miners with a static ip. ( Dhcp is bad because everytime your phone or tablet or pc connect to your network when away or off your router tries to assign a new one. With lots of devices your router can get confused. ) This is example of my settings assumes your home router is ip 192.168.1.1 but if it's not then change yours accordingly ie. 192.168.2.1 Set to static, add netmask and gateway / dns settings. Apply. Set your new static ip's just outside of dhcp range. Mine start at 201 then 202 and so on. This way your router will never conflict with ip's changing on your network.Changing this helps easily remember your ip's for rigs to check them at will instead of being random.

### Reply 11:
Yes, when miner #3 did connect, I had all zero's on all four lines<rest of thread truncated>
","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network switch"",
    ""hardware_is_owned"": true
  }
]"
14628,"Date: 2012-12
Topic: Merged Mining
### Original post:
What is the connection between the Namecoin and Bitcoin blocks?I understand that the midstate for the Nmc is used as the coinbase for the Btc, but why is it that when someone mines a Btc block, they generally get a Nmc block within 10 minutes? There's got to be some connotation I don't comprehend. Can someone explain?

### Reply 1:
IIRC, this question has come up before, and its usually just coincidence.

### Reply 2:
<link> far, far too frequent to be coincidence. I went back 15 pages, and every Btc block was immediately followed by a Nmc block by the same miner.

### Reply 3:
Namecoin is based on bitcoin. When you find a bitcoin, if you are doing merged mining, you *will* find a namecoin block. The 10 minutes must be how long it takes for it to show up.M

### Reply 4:
ThisWhen merge mining, every bitcoin block will find a namecoin block. But not every valid namecoin block will be a bitcoin block (when merge mining and as long as bitcoin difficulty > namecoin diff)

### Reply 5:
Well if the namecoin and bitcoin difficulty was the same, it would be like 100% chance of finding a block from the other network after finding a block on the first network, unless my understanding is incorrect.

### Reply 6:
Close. It won't be after, it will be during. When you find a bitcoin block, it'll be a namecoin block. At same difficulty, the opposite will apply as well.M

",[]
21083,"Date: 2016-07
Topic: New to me - Terraminer IV
### Original post:
Greetings!I am just getting back in BTC and picked up two Terraminer IV units for $300 each. I really had no intention of starting mining again but the price was right and having Th/s just sounded cool. I managed to get the latest firmware, manuals, etc from the site, despite them taking it offline (thanks Google cache). I have not been able to find much recently on these and what I have found has not been too positive. I would have a different perspective had I purchased at retail when they came out but after seeing these I am impressed. Granted I only have old 60-110Ghs BFL hardware to compare but these seem solid. As soon as I got them I cracked the seals, cleaned them out and started to inventory the components. One was perfect and the other had a core that was not working. I was able to track that pretty easily to a pump that was not running and after a few minutes of highly technical, very sensitive, work with a specialized tool (removed pump and smacked it with the back of a screwdriver) it was once again pumping and all cores running. So I am currently hashing on Slush's pool and getting 3.2-3.6 Th/s between the two after 24 hours straight and overall I am pretty impressed <rest of post truncated>

### Reply 1:
Hello,I was wondering if you could upload the manual somewhere so I could download it? I have a Terraminer IV I would like to have the manual. I am mining at BTC guild ATM, it's ok my luck hasn't been that great either.Thanks!

### Reply 2:
The Cointerra units do run well so long as you keep them cooled on the different stepping settings. I had 1 of them and could only hash it around 1.4TH each due to over heating (stepping 5 iirc).You should check out the cgminer dev's pool: <link> their thread here is: <link>

### Reply 3:
You can still grab it from the site with a direct link. <link> firmware version are you running? 7.56 was the last version released, AFAIK. I grabbed everything from the website before they went under so I do have copies of everything. Let me know if you need anything.

### Reply 4:
Actually, I also have a 0.7.6 firmware version, which was released 03/24/14 but the latest is 0.7.56 which was released on 09/04/14 and is the last. I have the following versions:0.6.32 0.6.480.7.560.7.6I also have all of the PDF documentation from their website. The text below is from the firmware download page. 9/24/15: CoinTerra is aware of the Shell Shock exploit in bash implementations lower than version 3.2.52(1)-release however our embedded firmware is not vulnerable because we are not running bash.09/04/14 Firmware 0.7.56 MD5: <truncated> More robust performance due to changes in USB interface, voltage algorithm, power monitoring, and more- More accurate temperature sensor calibration- Avahi/Zeroconf support to easily find Terraminer IP addresses with mobile app- Diagnostic Report in web UI- Reset cgminer.conf from web UI- Heartbleed fix (cgminer 4.3.5 and openssl 1.0.1g)- Store cgminer logs on MMC so that they are available after system reboot- Fixed minor bug that caused a corruption of cgminer.conf when removing middle entry from pool list in web UI03/24/14 Firmware 0.7.6 MD5: <truncated> The TerraMiners MAC address is now displayed in the web Control Panel page footer. <rest of post truncated>

### Reply 5:
Greetings: one will have the firmware version 0.7.6 thanks

### Reply 6:
Does anyone have the latest Cointerra firmware they would be willing to email me? I just got a Cointerra miner but it doesn't have any firmware.

### Reply 7:
Unless you have FREE power, those things are so inefficient by current standards that ANY price would be ""wrong"".I ran on Slush's pool for a while when I was bitcoin mining, didn't have any issues with it and they have a good reputation.

","[
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    ""hardware_is_owned"": true
  },
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]"
24165,"Date: 2023-09
Topic: Canaan avalon 1166pro resets pool and password
### Original post:
Hello,I have some Avalon 1166pro but 1 asic is always rebooting and changing the pool address and worker name. It also changes the login password. Usually it is user: root and pass: root but it changes the password to another. Has someone had similar problem?

### Reply 1:
Is it changing the pools back to the default ones or something else?If it's going back to the default pools with the default user / pass for them then the control board is resetting for some reason.If it's changing to something else, then either the miner or something on your network is infected and re-configuring the miner to mine for them.-Dave

### Reply 2:
It changes to a pool I think is original. Pool: <truncated> with worker name: stockmnr.avalon

### Reply 3:
ss.antpool or sd.antpool? sd is not a valid <truncated> is not what mine defaults to, but I don't know if they have more then 1 username.I would make sure you are on the latest firmware <link> and reach out to avalon support they also have a sales rep in the forum you can try sending a PM to: <link>

### Reply 4:
Did you buy this miner as a used unit?Can you use other devices to set up your miner maybe the device you currently using is infected try to set up your miner through mobile or another PC that you know is clean.Also, try to change the pool using another browser and incognito mode.Update here if it works or not.

### Reply 5:
Yes I bought it used but it was working fine. What is strange is that it changes the login password. Usually it should be root

### Reply 6:
Most of what I heard from other users who bought used units experienced the same thing there might be something on the firmware it might loaded with modified firmware or malware that possibly has a locked pool and password so regardless of how many times you change the pool and password it would only reset back to original pool and password.If you haven't tried to flash the unit try it first it might fix the issue you can also use the upgrading tool to update the unit.

### Reply 7:
It was infected with a virus. I updated the firmware and changed the ip and password. Now its all ok. What I notice now is that the hashrate has gone from 81th to 76th. I have done the aging option but it does not pass from that

### Reply 8:
How about the temp? Have you monitored the temp? The high-performance mode will not be triggered if your miner is hot. You should cool down the miner a bit.Try to increase the fan speed of your miner at 90% to test if it can help to drop down the temp and trigger the high-performance mode.

### Reply 9:
could be the 76 is normal and you had a better firmware that pushed 81 th but stole it with a bad pool switch.

### Reply 10:
Yup it's pretty normal for infected firmware to overclock your miner to make the most money out of it, they know it's only a matter of time before the owner finds out and solves the problem, however, there is also a possibility that the other firmware version did better tunning on the individual chips and was able to achieve better hashrate.OP, you say the miner was working fine, so we know it didn't come infected, you really have to figure out where the hell it came from, you sure have a virus/malware sitting somewhere in your local network, it scans for miners and brute force itself in, let me guess, your password was the default or was easy to guess?

","[
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    ""hardware_name"": ""control board"",
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  },
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    ""hardware_name"": ""miner"",
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    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""mobile"",
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]"
22717,"Date: 2018-08
Topic: Mining Near Salt Water
### Original post:
Does anyone have experience mining near the ocean? Debating on setting up shop practically on the coast and wondering if anyone mines/has experience in a similar environment.. My concerns are pretty straightforward.. Salt can't be good for machines, wires and infrastructure over time.Can anyone think of a way to mitigate this salty environment?

### Reply 1:
Here is a thread that I remember touched on it. If you are close enough for salt to be an issue you are probably going to run into trouble as it will start to corrode everything. Maybe reach out to OP and see if they found a work around.

### Reply 2:
Appreciate the feedback. I have reached out to OP and hopefully will hear back on his experience since he last posted. Will post an update if I hear anything back. Thanks guys!

### Reply 3:
As noted in earlier in the linked thread, it is not so much the salt in the air as it is the humidity combined with the salt. You have to dehumidify the air. Without moisture the salt has no effect on metals whereas moisture even without salt content leads to corrosion, adding salt to the mix just speeds it up.

",[]
11852,"Date: 2012-03
Topic: Windows 7 cgminer build for Icarus and BFL. 7.5 BTC bounty !
### Original post:
I need a windows (7 32) version of cgminer to mine with BFL and Icarus. Unzip and ready to mine. Pay 5 bitcoins.

### Reply 1:
My 5 BTC have been paid to ckolivas for his cgminer 2.3.2 build.

","[
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    ""hardware_name"": ""BFL"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Icarus"",
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  }
]"
3942,"Date: 2017-02
Topic: [K&T Hosting] 100x Used S7 (4.73TH) Group Buy
### Original post:
Ok, let me just see if my math is good here: Your offering S7's at 4.73TH/s, at 380USD. whats the exact cost of hosting for an S7 per month with you? about 60$ a month? (40$ per kw and they use about 1.3) if so that leaves about 35$ profit a month granting no diff changes (assumed to be another 5+% in 3 days) . that profit margin is SLIM, and on 28nm ASICs :/thats 11+ month ROI with NO dif changes if they bring in 35$ a month after hosting fees and cost 380$ :/ ouch, no way personally.

### Reply 1:
Let me guess,1. your assumption is based on today's btc price and it would not go up in the future. Yes I am biased that btc will go up imho or else I would not bother messing up with all these. 2. you've assumed this purchase of hardware as a sunk cost at time zero, which is not exactly true. Should something happens to one's daily profitability, the hardware would, likely, still bear a residue value. Back in September 2016, S7's were sold for around $250 or less, just for your <truncated> your math is right, no argument here. I believe I have put up all the sales related info as reasonably much as I can. Good for you if you could be better off elsewhere but not everyone could enjoy what you have.

### Reply 2:
true, 2 valid points, cant argue there! the residual value will STILL prob be 200ish even in a year, i would say, so that IS a factor, yes.and i agree, BTC only really goes up long term, its almost safe to say this time next year it should be easily 1500USD+.As a long term proposition these could be a great investment for sure, and if in a DC you will be there to admin them so thats valuable too.Best of luck! i may actually go in on one myself as a long term hobby miner i can sell at anytime

","[
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]"
15624,"Date: 2015-09
Topic: Bitcoin Mine Cooling Options - What are my choices?
### Original post:
Miners,I am starting a series of articles shedding light into some of the challenges we have faced running large Bitcoin mines. I am trying to publish 3 a week until I run out of subjects. Here is my latest, hope you enjoy. Link: <link>

### Reply 1:
Very nice reading. I like to know the costs for each option.Is immersion cooling the most expensive?

### Reply 2:
Direct Air will be your cheapest option but least reliable overall because you are at the mercy of the outside weather. Next is standard DX cooling up to 20 tons. Then I would say evaporative (done right) then water chillers. Immersion is the most expensive unless you are doing a large farm, then I think there may be a case for it. I can see were it may be more cost effective doing immersion over many large water chilling HVAC systems.

### Reply 3:
I'll just hire 10 asians to blow on the miners as they go. 10/10 would asian labour again.

### Reply 4:
Hmm I think the link is dead but it might could be my bad timing. Please check and update. In regards to your comments about immersion being the most expensive, did you mean submersion or 2 phase immersion cooling techniques from Allied Control? Also given Bitfury's recent acquisition of Allied Control, I'm eager to see how this concept is adapted to such an extreme scale to meet Bitfury's super datacenter requirements. I imagine it will put the proof of concept design built with ASICMiner a few years ago really to shame.

### Reply 5:
Fixed. Immersion Cooling - Most expensive option overall at this point because there is not scale in the production of immersion cooling tanks and supplies. I was referring to Allied Control's setup being that mineral oil is not fun to work with. Allied Control uses a liquid that is not oil based and it much easier to work with the clean up. ASICMiner was using Gen 1 of Allied Control. They are the leader in this new area. Over time the cost will come down. We are looking to invest in it within the next 2-4 years.

### Reply 6:
What a racist

### Reply 7:
I believe he was joking.

### Reply 8:
I just use some big household fans and they work just fine.

### Reply 9:
Maybe,This Picture PCWater Cooled Version Can be, Mining Hardware.But the number of the device and Coolant could cost

### Reply 10:
Closed-loop liquid cooling is the way to go and the price is really coming down. Many mining units have used these already. We have a number of them laying around from an old farm.

### Reply 11:
Of course he was. But the joke is not very nice still.EDIT: Thanks fro sharing the article btw. I think Direct Air Cooling is a good choice but you'll need a good filtering solution as they say and that's right.

### Reply 12:
The best article yet on bitcoin specific cooling.Thanks especially for addressing the evaporative cooling aspect as I think many people do not understand that this method of cooling is deadly once outside humidity approaches 80% (It doesn't work)A very well thought out and informative thread.Cheers! I wish you wrote this earlier

### Reply 13:
Thank you for the kind words. Yes I agree, I wish I would of wrote this earlier to help people out. Do you have a suggestion for what you would like me to write about?

### Reply 14:
Thank you for the input and yes the higher temperatures mean higher efficiency. The problem is that people try and only use that is hot climates and then you are betting that you wont have any hot overcast days that will raise the humidity. This happened at another hosting provider over the summer and it was pretty bad. That is why I accept less profits and invest in DX cooling to make sure I can run 24/7/365. Fans and Evap can only do so much in a desert.

### Reply 15:
Yes I am in Central Washington and we had a number of high humidity days, mostly because of the on-shore flow that makes it over the Cascades in the form of clouds.

### Reply 16:
Would you consider a hybrid greenhouse/bitcoin mining for the fall-spring a novel idea to maintain higher temps? Any idea of a simple solution to keep it happy for both? I think it is what I want to do and I would be happy if another did it and posted photos too......if it worksI imagine just small like 5 or 10 S7 Ants.

### Reply 17:
For that little, you likely have many options. For massive heat loads, your temps can rise so fast that is becomes a serious issue. The recommended method is what the traditional data-centers do that use Evap, they have backup DX cooling ready then the Evap is unusable. Take in mind, I come from a service providers mindset so that has different challenges for a single miner and their mine but once they get over 1-200 Kws, they really need to be thinking about this too because of their investment. -D

### Reply 18:
The only one made in big quantities was C1. Yes that bitcrane I think it was had a few but nothing like C1 on amount. Most wont be able to do water cooled. They will be<rest of thread truncated>
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    ""hardware_name"": ""household fans"",
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    ""hardware_name"": ""PCWater Cooled Version"",
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    ""hardware_name"": ""closed-loop liquid cooling systems"",
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22970,"Date: 2019-06
Topic: Antminer S9 burned power connectors
### Original post:
Hi guys,Im asking for your help. Recently one of my antminers S9 lost hash power on one of the chains. When I came to inspect whats wrong, I have found burned power sockets on of the hashboards. The cable isolation leading to this sockets is also burned. See pictures.Does anyone have similar experience, is it repairable and what has caused this? Thanks for your opinions.<link>

### Reply 1:
many many many times that has happened.how clean were the insides of the machine?dust build up can cause the issue.it is dead and gone most likely. at least the one burnt board and the psu are most likely not fixable.open unit dust it out and try running it with 2 board.

### Reply 2:
Hi there,thanks for your reply. The unit and the psu are working with the two remaining hash boards. When I opened the unit, it was very little dusty, nothing major.Im waiting for spare parts and will try to repair and run this burned board.

### Reply 3:
Nice riser there, technically what you said there is correct, electricity does not like ""loose"" stuff, everything must be ""too tight"" for things not to go to that extent, however with the way these 6-pins are designed, it's a bit hard for them not to be tight, i mean once you hear the ""tick"" sound, it's a 99% chance that they are tight enough.The other possible reason is that the board is bad, it's pulling a lot of current , causing the wires to heat up and it's always the weakest point "" the connectors"" get burned first, now this could also be a problem with the control board "" not handling the voltage requirement correctly"" , I am not sure which ( control board / hashing board) is responsible for the ""power"" part , but which ever is, can very likely be the cause of all this.

### Reply 4:
I think the reason why it burned because you didn't attach it properly.Anyway, you can still repair it if you have 6 pin GPU male terminal if you have some GPU miner with riser you take the 6 terminal and put it to your hashboard.This is what it looks likeOr buy 6 pin GPU terminal on <truncated> <link>

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    ""hardware_name"": ""control board"",
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]"
10878,"Date: 2020-03
Topic: [Avalon Asic] Batch 2 Successful Orders
### Original post:
bought 3 - 3605$ - <link>

### Reply 1:
Bought 2 unitsneotrix (registered in shop) <link>

### Reply 2:
2 units ordered, paid 0.15117539 as placeholder.<link>

### Reply 3:
Username - Number of Units - BTC Transaction #Rocks - 2 units - <truncated> payment was a placeholder of $3 or 0.15115848 BTC, which was the incorrect amount requested at the WalletBit Pay site.

### Reply 4:
---3 Units Ordered. I sent an email to <truncated> with more details, but posting here as well couldn't hurt.<link> sign this message with one of the addresses that is an input to the transaction to prove that this is my <truncated> on all the text above, just copy-paste between the ---.Signed with <truncated> in full (226.81348724 BTC).

### Reply 5:
1 unit ordered<link> anybody get anything that looked like a confirmation email? The last email I have is the password reset I needed to do on the avalon store since it wasn't giving me my activation email when I signed up. I purchased as a guest on walletbit, and while walletbit was waiting to confirm with the ajaxy QR code, the tab crashed in chrome. Either way, sleep now, and hopefully everything will be magic by the time I wake up. It's Saturday morning dammit.

### Reply 6:
Paid placeholder amount for two units: <link>

### Reply 7:
fredi173 1 <link>

### Reply 8:
Placeholder 1 unit paid - <link>

### Reply 9:
Ordered 1 unit. Sent placeholder payment to <truncated> payment amount was 75.65502117 BTC. I plan to send the rest if/when the order is confirmed.

### Reply 10:
Partial payment:dust - 3 - 2013-02-02 15:2x:xx - tx withheldI created the order right when the items were available and waited 20-30 min before giving up and paying, so the actual order is quite early.

### Reply 11:
3 units ordered, full payment via WalletBit eWallet, and I have my receipt mirrored here for all to see.Thanks for keeping this list, senseless. EDIT: Receipt contains BTC transaction. Here it is: <link>

### Reply 12:
Ebereon - 2 units - <link> address <truncated> (Guest payment)Amount: 151.38166041 BTCFee: 1 BTCWas logged in in the shop.after some time i got this from Walletbit:

### Reply 13:
2 units ordered with full payment - <link>

### Reply 14:
It finally worked, I have confirmation from Walletbit. I had to wait for my account to get funded. Painful but I did learn a few things and I am glad I stuck with it.

### Reply 15:
UPDATE: Successful full payment for one unit: <link> [EDIT] Associated deposit transaction (to walletbit, NOT avalon): <link>

### Reply 16:
1 order with placeholder amount. I don't trust sending $1500 to an address generated by a failing web site. If Avalon cancels my order and places me in the back of the queue I'm not sure I will re-order.

### Reply 17:
there is no such thing as a placeholder order, there was only a mistake, which will have to get fixed.

### Reply 18:
We just called them place holder because it was a complete order, just for the wrong amount.

### Reply 19:
Exactly.Senseless, if might be helpful if you change the description to something like ""paid, but with different amount due to website errors"". I think that is a more accurate description of the situation.

### Reply 20:
Placed and paid (payment was sent from MtGox) order for 3.<link>

### Reply 21:
Ordered 1 device in the first, introduced the full data, successfully redirected to the Walletbit, paid 0,05 BTC, my cart is empty.<link>

### Reply 22:
3 units paid with trade in against 3 Icarus boards, paid a bit more than 181 BTCs...Gn8,Ecki

### Reply 23:
It is pretty unfair if they do this. People had no control over if they were provided the correct amount or incorrect amount to pay. People who paid the incorrect amounts did so simply to hold the order. Avalon should fix that, not cancel the orders, everyone will be willing to pay the correct amount when requested.

### Reply 24:
1 Placeholder Payment Sent:<link> Destination Address <truncated> One other in cart but I'm trying to pay as a registered walletbit user this time and my deposits to them haven't shown up yet:<link> successful and walletbit confirmation confirmed: <link>

### Reply 25:
well not cancelling placeholder amounts would be unfair to those that saw it but knew something was obviously wrong

### Reply 26:
order for 2 units, fully paid, no confirmation of any kind, no mail no order inside avalon shop <link> what?spiccioli

### Reply 27:
order for 1 unit. I think this is OK.<link>

### Reply 28:
Ecki, I know you own several Icarus cause we purchased in the same original batch, but do they ask for confirmation or pictures of our Icarus or something? I couldn't get past the ""Add To Cart"" page for some reason, it just stuck on ""Updating cart..."". I actually still have the page up, I wonder if it's because I use a custom version of Chrome or something.

### Reply 29:
bought 2 but have not been able to finish the 0.5 btc checkout !

### Reply 30:
Bought 1 but <rest of thread truncated>
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21395,"Date: 2017-05
Topic: PSU
### Original post:
My gridseed bitcoin miner has a 12v fan and needs 12v 5a to run and i got a new 12v adapter becuse the old one was getting way to hot to the point it was melting the sticker a bit so I got a new 12v adapter with same same output as the old one and the miner is not having any of it. The fan will run but the miner will not mine and will keep giving me this 2017-04-22 18:45:28] System reseting[2017-04-22 18:45:29] HW error, do hardware reset. I am not going to use the old adapter because it is a fire risk and im not buying a new adapter because the one i just got was $71 nzd can someone tell me what to do to fix this

### Reply 1:
nzd = New Zealand dollars correctSo you are in New Zealand correct?You purchased a second adapter without asking us.So what are the specs on the adapter you purchased? are they 12 volts and 7 amps if not you purchased one that is too weak.I had 18 of the blades and 35 of the round discs models back in the day. I know this gear.Like it or not you will need a better adapter. or worse yet the gear is damaged and uses too much power.this one would do it it is a 10 amp.<link> method is this<link> you need an atx psu

### Reply 2:
its the same as the old one and the old one works with it 12v 5a

### Reply 3:
5 Amp cubes were marginal on the old Gridseed blades, especially if you were pushing them past about 2.5 MHash/s - ESPECIALLY on the blade with the fan connected to it.It sounds like you might have gotten a cube that doesn't quite meet specs though - but I WOULD strongly recommend going with at least a 7 amp cube to leave yourself some leeway.There's a REASON your old 5A cube was running VERY hot.

### Reply 4:
logical solution, buy cheap PC PSU throw cheap ass shitty power brick hard at the nearest wall. go on ebay and buy a couple DIY DC barrel jacks. cut molex off new PC PSU and wire yellow to positive (the inside part of the DC jack and black to negative outside of the DC jack, either get a PSU tripper so it turns without a computer or get one of the switches. done youve now got a PC PSU powering you miners and its go a nice big fan to keep the PSU cool the DC power bricks are good ideas but there very inefective and very very bad ideas for drawing lots of current all the time, there enclosed and just get hotter and hotter

","[
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  },
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    ""hardware_name"": ""blades"",
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  {
    ""hardware_name"": ""round discs models"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""5 Amp cube"",
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  },
  {
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  },
  {
    ""hardware_name"": ""PC PSU"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""DIY DC barrel jacks"",
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]"
23592,"Date: 2021-06
Topic: Antminer S17+ not hashing
### Original post:
Hi there,I bought my first and last Antminer S17+ 70ThsI get my miner (used) last Friday and as soon I unpacked and got a inspection on the boards, the heatsinks fall down.<link> some research I glue the heatsinks with thermal glue for heatsinks and start the miner, sadly both boards don't hash anymore.Still I think maybe is not only the heatsinks problem, because I see some NAND errors on the Kernel LogCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility g<rest of post truncated>

### Reply 1:
Code:[quote author=Astra2000 <truncated> <truncated> 07:59:29 <truncated> Enter 30s sleep to make sure power release finish.2021-05-29 07:59:29 <truncated> init gpio907The miner should work just fine without the heatsinks as long as the heatsink isn't shorting the other once, it will get to the point where you can feel the heat coming out from the miner but then it will show a temp-error and stop, so you don't really need to stick that heatsink just for testing purposes.The kernel log is not complete, after the 30s sleep which usually takes a bit longer than 30 seconds, it should start testing the chips on all the connected chains, so allow more time and then post the rest of the following log because that part is what actually matters.However, at first glance, it seems like you might have a faulty PSU, there are a few things to do to troubleshoot it but I rather see the complete kernel logs from the original firmware before arriving at conclusions.

### Reply 2:
Hi, thanks for your replyI just found odd, that I connect one Hashboard alone and works, and if I change the Hashboard to one of the other two they just won't start.btw I have check the PSU and one fan is not working :/I have order a new one, maybe it works afterwords.<link> I have check the PSU and the problem is not the fan, but yes the PSU<link>

### Reply 3:
I have some serious doubts about your way of troubleshooting the PSU, it's a bit sophisticated and far from the normal PSUs, this could still be a bad fan or a faulty fan connector and not a dead PSU, try to use the fan from the other rail and make sure you plug both cables while testing.

### Reply 4:
Hi, I made a new video testing the fan<link> are both faulty ( PSU and Fan )

### Reply 5:
Gave you 2 merit points for the efforts, it's great to see more video content in the forum.Can you re-do the same test but with the TWO power cords plugged in?

### Reply 6:
hi, i repaire the PSUs , and i assure to you, the 3 fan is not on monitoring, so, if fan is dead, the psu still working ! for sure if PSU is good or not, needed full kernel log, send this after 5min running

### Reply 7:
Thanks for some weird reason, all the fans are working now.I have only one hashboard attached because the other 2 have the heatsinks falling :/<link> the hashboards dead ?

### Reply 8:
Thank you for your reply, I will give you the kernel log as soon I have some time, maybe tomorrow <truncated> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> <truncated> (gcc version 5.4.0 (LEDE GCC 5.4.0 r3560-79f57e422d) ) #0 SMP PREEMPT Wed May 26 10:04:03 2021[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Antminer S17 Miner Control Board[ 0.000000] cma: Reserved 16 MiB at 0x0f000000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 65536[ 0.000000] <truncated> node 0, pgdat c07ba340, node_mem_map cedf0000[ 0.000000] Normal zone: 512 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 65536 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 12 pages/cpu @cedca000 s18944 r8192 d22016 u49152[ 0.000000] pcpu-alloc: s18944 r8192 d22016 u49152 alloc=12*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024[ 0.000000] Kernel command line: <truncated> noinitrd ubi.mtd=7 ubi.block=0,1 <rest of post truncated>

### Reply 9:
I have take out the good hashboard and insert the 2 bad ones. here is the log:Code:[ 0.000000] PID hash table entries: 1024 (order: 0, 40<rest of thread truncated>
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11184,"Date: 2022-07
Topic: How did this Hardware work in mining bitcoin?
### Original post:
When I saw the photo of this hardware, thought it was a hardware wallet, read through the tweet and many pointed it to a mining hardware. How did it work?

### Reply 1:
usb miners still exist: <link> just plug them into an usb port (or powered usb hub), and run mining software on your system, and that's about it... When you start (for example) cgminer, it detects the usb stick and it gets it's work from a pool you configured when starting cgminer, or from your own node.But before you run off and buy such a device, they are not really performant. Most of then never ROI

### Reply 2:
The image looks like an ASICminer Block Erupter, not the newpac. There are four USB miners that I know that mines Bitcoin the Block erupter, Newpac, Compac F, and Antminer U1 USB miner. But I think only Newpac and Compac F are still available on the market. If you want to talk more about these USB miners then check this thread GekkoScience NewPac / Terminus R606 (BM1387) Official Support Thread. It should be the right place if you want to learn more about this. And take note like the above said it won't make any profit unless it's for study purposes or if you decided to mine solo for lottery.

### Reply 3:
Ya left out 2 of Sidehacks other sticks: His original Compac and the TwoPac that used the S3 chips. The Compac had 1 chip and the TwoPac had <drum roll please> 2 chips. Und ja, that looks to be a Block Erupter from ASIC miner. I believe it used a chip from Bitfury.Back in the day they were pretty good but these days even compared to an old Compac it is horribly inefficient. Current best stick made is Sidehack's Compac-F that does over 300GHs while pulling less than 15watts.

### Reply 4:
It worked pretty good. 333Mhash at 2.5 watts vs. my GPU mining rig, of the time, which did 500Mhash at 385 watts.I still have 74 of them. I would have been better off keeping the Bitcoin I spent on them though

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    ""hardware_name"": ""Newpac"",
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  },
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    ""hardware_name"": ""Compac F"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Antminer U1 USB miner"",
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    ""hardware_name"": ""GekkoScience NewPac"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Terminus R606 (BM1387)"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Compac"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""TwoPac"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac-F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICminer Block Erupter"",
    ""hardware_is_owned"": true
  }
]"
24062,"Date: 2023-01
Topic: RI signal at 0 S9
### Original post:
Hi guys, small question on a hashboard s9 4.21, I replaced a chip, the clock is well at 0.9 but the RI at 0v, the LDO comes out well 1.8v and 2.5v bottom pin. All the small resistors are at the right ohm. After soldering the chip, I checked the resistors CLK30 CO30 RI30 BO30 RST30 are good in ohm. I conclude that the chip soldering is good?Any idea where it comes from? Thanks!

### Reply 1:
If it's a 0 RI signal I would suggest you check the diagram to check where the RI signal is gone you can check the diagram from this link below.- <link> the yellow line for RX(RI, RO) starting from the power source until you found the broken or missing parts or it could be no connection if it doesn't have a connection make a jumper.

### Reply 2:
Hi friend, I confirm that the RI signal stops on this chip (see picture) despite my multiple chip soldering I do not understand.When you say ""jumper"" it would be from where to where?<link>

### Reply 3:
Based on your image that's not a starting point check the diagram again from the link I provided above. Start from 00 or 01 until you found where the signal has gone. And please follow the guide from the link I provided above it should help you how to fix them.

### Reply 4:
So I checked CLK (green line from 00 to 63) and RI (yellow line from 63 to chip 28 or I lose RI from here)The chip 28 is the one I replaced as said above. But the resistances taken at the terminals of this one are correct. (CLK 0.433 CO 0.396 Ri .397 BO 0.396 RST.0316)I have tested also core to core and I found 0,446v between each chip with next row <link>

### Reply 5:
Does chip 29 have an output? The RI signal is output by pin 28 of the previous chip and then transmitted to the test point.

### Reply 6:
You're right, the chip 29 had problem. So I remplace it one more time, and all its good now

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15736,"Date: 2016-04
Topic: Asic Boost - A Speedup for Bitcoin Mining
### Original post:
<link>

### Reply 1:
Thanks for sharing

### Reply 2:
<link> like they've patented it, does anyone have some information about their licensing fees and terms?

### Reply 3:
So they will release firmware updates for all miners like the S5 ? Still don't understand what they want to achieve really with this.

### Reply 4:
Simply put:This is a design solution for ASIC chip makers NOT a tweak for miner owners

### Reply 5:
Is good idea to pro-long the use of asics, perhaps this idea can use for other bitcoin mines.

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13389,"Date: 2015-05
Topic: Logging Antminer Statuses
### Original post:
How does one log all an Antminer's statistics (temperature, hashrate, etc.) to a file?I can log in to an Antminer via SSH, so I should be able to turn on some option for `cgminer` to log everything, no?

### Reply 1:
I looked at <truncated> and it <truncated> -ocgminer-api -o poolscgminer-api -o statsBut what is `cgminer-api`, and where can I find it? I found some Ruby API on GitHub, but that doesn't seem to be the same as the `cgminer-api` executable on AntMiners.

### Reply 2:
Go to official cgminer and get one of the API programs.<link> wrote the API)We've got C, PHP, Java (and Java class file), Ruby and Python code thereVia the java class the main stats you are probably looking for would be:java API stats IPAddressOfMinerThe miner needs to have the API set to allow the (remote) computer you are running the API command on(which it may already)Read the API README for full details ... <link>

### Reply 3:
The cgminer-api executable on an antminer is api-example.c.

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16581,"Date: 2023-09
Topic: Who are the Reputable Mining Hosting Companies?
### Original post:
I'm new to bitcoin mining. Looking to make an initial investment of about $10k with more to follow if things go well. My electricity costs at my house are not so great about $.15/kwh, so I'm looking for hosting solutions. When searching for a hosting company, almost all the websites look the same. I know quite a few can be scams. No one lists their prices on their website. Who are the reputable hosting companies? Are there review sites where people discuss their experiences?Is there a way for me to easily compare different hosting companies?I'm in Austin Texas. It's definitely a plus if I can visit the facility and it's located in Texas.Thank You in Advance!

### Reply 1:
Hosting solution to mine Bitcoin? You will probably be scammed in the end if you keep up with this, your electricity is high? Fine, accepted, you only have two to three options left and it will be better if you listen.1. Move out of Texas and go the electricity bill is not very high.2. Forget Bitcoin mining and invest in Bitcoin.3. Invest more on solar energy or other. Bitcoin mining is not a do or die investment, there are other legal ways you can make money with Bitcoin and in your own situation it's better you change location or invest more on solar energy or just forget Bitcoin mining and buy Bitcoin direct and hold.Any other ways apart from what I said is scam, especially anything cloud or rent space, etc.

### Reply 2:
bleak. haha. I called the guy at at Musk Mining. He seemed pretty legit, but if you crunch the numbers the pay back periods aren't that great even when you freeze at todays price and difficulty.

### Reply 3:
Dude buy 10000 worth of btc and call it a day.if you are nervous do 2000 a month five months in a row.

### Reply 4:
8.5 cents per kW and you have to buy the equipment from them?Take Phil's advice, for 10k nowadays mining is not really worth it, you won't get discounts, you won't get the best deals for 2-5 miners, and you'll end up making a few bucks each day counting the days till you might ROI. Did you type this while being serious? Cause I can't stop smiling while reading!

### Reply 5:
I would mine coins only on my equipment and on my territory. If you dont have such an opportunity now, then buy bitcoin. Any mining hosting ways work in their own interests and find a way to outsmart you with a contract to purchase and maintain your ASIC.

### Reply 6:
Buy Bitcoin is a better option or you can ask your relatives who live outside Texas in this case states like Idaho have the lowest at 10.79 according to <link> or just move to another asic algo like Scrypt Ethash or X11 but I doubt you will get the miner hardware so soon

### Reply 7:
In other words invest, you won't have to worry about electricity period.

### Reply 8:
Apparently you have nowhere to put your money if you are looking for the use of your funds through mining hosting sites. You can use these funds to simply purchase a couple or three miners and simply find the nearest data center for placement, while investing in cloud mining you will simply lose your funds since reputation and cloud mining are not joint things in 99% of cases.

### Reply 9:
OP was asking about hosting companies, you told him to ditch the idea and look for a data center, are you smoking something or are you a bot with unsolved bugs? .OP, doesn't matter how legit a hosting company may seem the end results are usually not too great, The problem is within the structure of BTC mining profitability, Imagine you are a hosting company, and you buy electricity for 5 cents, you sell it for 7 cents, your profit is 2 cents per kWh but then 1 cent * overall consumption goes to maintaining the farm and to pay employees, so you are now making 1 cent per KwH.What happens next is one of two1- BTC Price goes to the moon, the host still makes 100k a month while the miners he hosts make 100M a month, What is it going to be? they would either want to run their own gears now that the profit margin is huge, or they would want to charge you more if they can't do either of those, they would start making your life difficult by shutting your gears down, or pointing them to their pool for a few days and claim they have some technical issues and all that b.s.Not saying nobody on planet Earth is honest, but for most people, it would be pretty hard to resist not getting a piece of <rest of post truncated>

### Reply 10:
Genesis Mining: Genesis Mining is one of the most well-known cloud mining companies in the industry. They offer mining contracts for various cryptocurrencies and have a transparent fee structure. However, the profitability of cloud mining can vary, so it's essential to calculate potential returns <truncated> HashFlare was another popular cloud mining service provider. They offered contracts for Bitcoin, Ethereum, and other cryptocurrencies. Please note that the landscape of cloud mining providers can change ra<rest of thread truncated>
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11289,"Date: 2023-04
Topic: Best place to buy a miner help
### Original post:
Hi guys if anyone can help me with this issue many thanks

### Reply 1:
What country are you in?Do you have 240 volt power?Do you want to spend 500-1000-2000-3000 usd or more?What does your power cost you?Can you manage heat and noise?<link> link has some gear all is 240 volt .they are in texas usa you can pick the gear up.<link> gear in Long Island, New York and they do repairs.He may let you pick it up.Mikeywith a member at bitcointalk has access to the m50 whatsminers<link>

### Reply 2:
canaan discounts seems to get bitmain miner hashrate for 50% pay only.. is that avalion good compared to bitmain?

### Reply 3:
Yea I'm in Florida

### Reply 4:
i have an avalon a1246i have an avalon a1166i have two a1066i have an a1047i have an a1046of all of the above 1 board died on the a1046and 1 psu died on the a1166they are okay if you have cheap power. they burn more watts per thi have this one<link> does 3400 watts and 85thwhich is fine if your power cost is four or five cents.but if you are six seven or eight it is not so fineat op i do not know a dealer in Florida.con you supply 240 volts?are you looking for a hobby unit apollo is sold here it is very quiet.and sidehack has a miner that is quiet

### Reply 5:
Actually, I have direct contact with MicroBt officials, But I still have access to all miner models including Antminer, it's just the MOQ for those is usually on the high end which is why I don't advertise those.OP, if you are interested in Whatsminers (M30, M50) I can sell you the gears with DDP shipping to Florida -- meaning you get the miner at your address and don't have to handle any tax or papers, probably cheaper than buying them anywhere else.If you want other models and your MOQ is 10 or above, I can also arrange for that.Avalons used to be great gears, the new models not so, there is a good reason they sell cheaper than Antminer and Whatsminer, while I don't have any personal with the latest Avalons, the reviews on telegram are pretty terrible, I hope Avalon get their shit back together and go back to making tanks like they used to do.

### Reply 6:
The answer to that depends on many factors like Phil mentioned. If you're looking for rock bottom prices, your best bet is to buy directly from a Chinese wholesaler. Some of them have high MOQs, so they may or may not work for you. At AltairTech we are a US based mining retailer. We also operate our own mining farm and provide competent technical support if needed. Check us out <link>

### Reply 7:
Whatever place you choose to buy your miner from, it is imperative that you make sure that you are buying from a reputable miner seller and not some random ebay or alibaba merchant and do not use any strange software that they give you. Once you find a seller, it would be best if you were to double check by posting the source link on this thread so that the Bitcointalk community can tell you whether or not the seller is reputable.The problem here is that you could buy a miner from a sketchy individual who could try to find a way to sneakily scam you out of your coins or sneak spyware through, along with your bought miner.The scams can be quite diverse and complex. Here is an example: <link> aware of fake websites!The above recommendations from the Bitcointalk members philipma1957 and MikeyWith are trustworthy.

### Reply 8:
I'm a miner distributor in China, we've high quality miners with good price

### Reply 9:
First of all maybe now you already bombed by private message and some it try convince you that they was real. I think the best place to buy miner is their official site and used on marketplace like ebay. and don't forget to use escrow

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24009,"Date: 2022-08
Topic: Antminer S17e Fan anomalies / unusual error
### Original post:
I recently purchased a quantity of new fans and PSU's directly from Bitmain, in order to service some old S17e 60T I've had since new. I am getting a strange 'fan lost' error where the firmware seems to think the fans are spinning much slower than they really are. I have installed to a number of units and all return this same problem. I have also tried mixing and matching, (old fans and new) and every time these new fans return this strange low speed error in the kernel. In the example below, at first it appears that fan id 3 is the issue, however on next reboot it will be a different fan id that it thinks is missing (e.g. random each time).#I've used some fans from this same batch on 19-series and they function normally and report normal RPM.These are the fans: (Nidec <truncated> log:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory <rest of post truncated>

### Reply 1:
I should add...I've tried updating to latest Bitmain firmware. I've also tried using custom firmware(s) that offer fixed fan speed function (e.g. 90% or 100%), and these work perfectly and fan RPM's are reported 'normally' or what I would consider, from my experience, as correct / appropriate. Obviously this is a workaround, but since I have no wish to run the miners under or over 'normal' clock speed, I'd prefer to use standard Bitmain firmware at zero additional cost.

### Reply 2:
I had the same issue with some cheap fans I bought, they were reporting 30k RPMs and then suddenly fan lost, i could not get them to work on stock firmware, I remember someone mention about cutting one of the wires but i did not bother to try it, so you might want to look into that direction.

### Reply 3:
Why don't check the fan that you buy physically if you have a multimeter check the wires?here's the color of the wires- Black = Ground- Red = + 12V- Yellow = RPM signal- Blue = PWMThe blue if this has an abnormal connection or it is disconnected the fan will run at full speed and yellow will report or it will give you the RPM speed. So start checking the blue wire it might have cold solder joint resoldering the blue wire or replacing the wire sometimes it can fix this issue.

### Reply 4:
From a theoretical standpoint you should always have your pairs of fans matched. If one starts spinning faster than the other or one reaches full speed before the other they are not matched. This means their impedance is not matched, in this state a failure within a short period of time is not unexpected. The front and the back have separate power sources so not all four need to be matched.

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    ""hardware_name"": ""PSU's"",
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17152,"Date: 2012-06
Topic: Step-By-Step guide on how setup a GPU miner w/ mining pool? Mac OS X
### Original post:
Hello,I just bought a brand new 27"" iMac with a killer graphics card. I want to know how to set it up so that I can use the GPU to mine in a pool. I may need to be spoon fed but I really want to put my new machine to work. I am not a computer whiz by any means so go easy on me, but I do know a lot.Thanks in advance.

### Reply 1:
You best bet would probably be to simply load up linuxcoin onto a usb drive and boot from that.

### Reply 2:
Can I have a step by step process on how to do that? I have no clue where to start and I need some help.

### Reply 3:
Anybody? I simply want to know how to set up a GPU pool miner for my new iMac.

### Reply 4:
Here are the basic steps for getting a miner up and running on a pool:1. Download DiabloMiner (this is the only mining software that works with Macs, as far as I'm aware).2. Register your worker name and password on one of the mining pools.3. Open Terminal, cd to the DiabloMiner directory, and enter the following command (edited to include your own worker name, password, and the pool you are joining; below shows how you would join the BTC Guild pool as an <truncated> --url <link> hope the new iMacs have something other than Nvidia GPUs -- otherwise you are not going to be mining a whole lot of bitcoins.

### Reply 5:
Thank you so much! That is exactly what I needed.My new iMac has the ATI Radeon 6970M Graphics card so I feel pretty confident Last Question: how do I join a mining pool?

### Reply 6:
I have an iMac with a 6750M, gives me ~110 Mhash/sec after I've overclocked it.

### Reply 7:
Just peruse the Pools subforum. The largest pools are all stickied at the top with links to each pool's website. My personal favorites are Eligius and BTC Guild -- when they are working properly. You might want to join a couple of pools so you can switch between them when one goes down (as seems to happen more often lately).I don't know of any overclocking tools for Mac, sorry. Perhaps some other Mac users can offer suggestions.

### Reply 8:
Is ~110 Mhash/sec considered good?

### Reply 9:
I'm having trouble installing DiabloMiner. I got the OSX.sh file, what next?

### Reply 10:
Open the Terminal app and CD into the directory you extracted DiabloMiner. From there you will need to run it, <truncated> -u username -p password -o pool.bitp.it -r 8334 -v 2 -f 20 -w 128

### Reply 11:
Here's a GUI front end to Diablo Miner for Mac if you don't want to mess with the terminal: <link>

### Reply 12:
Frankly I'd recommend installing Windows using Bootcamp, overclocking your card with MSI Afterburner and then using poclbm. Gave me a much higher hashrate than using Diablominer in OS X.

### Reply 13:
It's supposedly better in 10.7 Lion.

### Reply 14:
Ah, that's good. Will see when I upgrade.

### Reply 15:
don't mine with an iMac... it's not worth it... you will regret later

### Reply 16:
someone here did and broke the chipset

### Reply 17:
That's possible? Now you've got me scared.

### Reply 18:
I have a full 2 year warranty so I'm not scared at all. Besides, I am positive he is not the only person who has ever blown a chipset due to mining.Everyone else: Thanks for the help thus far, I will try the GUI version in a bit.

### Reply 19:
I've started using SMC Fan Control now to increase my fan speed so my GPU temp doesn't go beyond 60 C.

### Reply 20:
If you don't want the hassle of installing software and figuring out all the command-line parameters etc. etc. I have set up a mining pool + miner that makes everything very easy. Fill out a small form on the website to register with the pool + click a button on the website to start the miner. As easy as that.For 6970/6990 cards it is also faster than all other miners I have tested. Plus 5% extra pay for the next 58 blocks. Pool link in signature.(No I haven't tested it against mrb's hdminer. But that miner costs 250 bitcoins and recent reports suggest it's not all that fast)

### Reply 21:
Followed what everyone said and it comes up with this error:[6/2/12 3:45:48 PM] Using Apple OpenCL 1.0 (Jan 2 2011 18:00:11) [6/2/12 3:45:48 PM] ERROR: OpenCL platform Apple is not OpenCL 1.1 or later [6/2/12 3:45:48 PM] ERROR: No OpenCL devices found Help?

### Reply 22:
It's because you run an old OpenCL 1.0 driver and apparently DiabloMiner requires OpenCL 1.1 now. You can upgrade OpenCL (not sure how that works on a Mac), or use an older version of DiabloMiner that works with OpenCL 1.0 or you can use another miner instead.

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10350,"Date: 2017-07
Topic: USB - Bitcoin Mining Vs Antminer
### Original post:
do we need to have Antminer hardware to run USB based bitcoin mining ? are these two hardware setup different ?

### Reply 1:
I don't want to sound rude, but I'm probably gonna sound rude. It looks like you need to spend some time reading up on enough basics to be able to formulate that question in a way that's possible to answer, by which time you might have answered it yourself already.

### Reply 2:
Only the very first Antminers were USB, all the ones after that have Ethernet built in.Avalon, however, is still USB based.

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13558,"Date: 2017-11
Topic: How in da hell?!!!
### Original post:
<link> How do i install this on UBUNTU!??!!!!Which one do i download!? Uggggh

### Reply 1:
No doubt you are doing the wrong thing anyway. I'm guessing you think you can install cgminer and mine with your PC. CGminer is controller software for dedicated mining hardware, it does NOT mine bitcoin on your PC.

### Reply 2:
""No doubt you are doing the wrong thing anyway. I'm guessing you think you can install cgminer and mine with your PC. CGminer is controller software for dedicated mining hardware, it does NOT mine bitcoin on your PC.""I made a dedicated mining rig with one gpu (for now) with Ubuntu OS. I've got a ledger on the way from Amazon and am currently trying to get a miner running. I attempted Easyminer and got an error. Now i'm trying CGMiner. My challenge is that I am a Windows user and a complete noob to Linux.I am glad everyone on here is quick to help or be an @$$hole.

### Reply 3:
Right so you are doing the wrong thing. You cannot mine bitcoin with a GPU and cgminer. A GPU is not dedicated mining hardware.

### Reply 4:
[/quote]Right so you are doing the wrong thing. You cannot mine bitcoin with a GPU and cgminer. A GPU is not dedicated mining hardware. [/quote]Ok. Thank you. However, I'm not interested in mining BTC. I want to mine altcoins. Is this where you are going to tell me to post in the Altcoin forum? I thought I was in the CGMiner part of the forum?

### Reply 5:
You should read the rules of this subforum:<link> many people have forked cgminer and use it for mining all sorts of shit. This thread is for support of the master cgminer code which I maintain and is for bitcoin mining only. You need to seek help from whomever maintains the fork that mines whatever shit you want to mine.

### Reply 6:
You should read the rules of this subforum:<link> many people have forked cgminer and use it for mining all sorts of shit. This thread is for support of the master cgminer code which I maintain and is for bitcoin mining only. You need to seek help from whomever maintains the fork that mines whatever shit you want to mine.[/quote]ok, thank you. I will keep researching.Take care.

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14040,"Date: 2011-05
Topic: Radeon 5XXX with Radeon 6xxxx
### Original post:
Any problems mixing a 5xxx with a 6xxx? Ex. 6950 + 5850.Thanks!

### Reply 1:
No problem here 6870 + 5850 in one case (no crossfire bridge ofc)

### Reply 2:
the only problem was that after I removed 5870, 6950 started to freeze win7 x64 when I play shockware flash videoclips(with or w/o hardware acceleration)

### Reply 3:
Got it. Thanks guys.Are you able to use SDK 2.1 + 2.4? Or just one of them?

### Reply 4:
<truncated> of GPU's mayb use different kernel-space drivers, sometims incompatible w/each other. esp tru for non-WHQL-certified drivers[usually cleaned from this to get ""WHQL"" logo], aka ""hotfix"", ""beta"", ""RC"" and etc.

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23301,"Date: 2020-07
Topic: miner t17+
### Original post:
Not sure why are you asking... Do you have any problems with machine? It turns off? Drops hashrate? Anything?That part of logs ain't really helpful, you should put whole logs if you have any problems. Temps are a bit higher but since it's July that is understandable. I run mine up to 86 C as above that they usually get damaged since soldering is very bad on those machines.

### Reply 1:
I bought a new t17+ and the mining status is under below? is it good? I think the temp of chips is up? is it normal or miner have a problem Thanks.Code:Chain# ASIC# Frequency GH/S(RT) HW Temp(PCB) Temp(Chip) ASIC status1 44 647 19351.40 25 35-57-34-55 57-78-55-74 oooooooo oooooooo oooooooo oooooooo oooooooo oooo2 44 643 19043.54 24 34-56-33-52 58-80-56-74 oooooooo oooooooo oooooooo oooooooo oooooooo oooo3 44 636 19461.36 4 34-54-32-52 55-74-54-69 oooooooo oooooooo oooooooo oooooooo oooooooo ooooother information <truncated> 15:19:54 <truncated> average_voltage = 17.9950282020-07-09 15:19:54 <truncated> target_vol = 17.90, actural_vol = 18.00, check voltage passed.2020-07-09 15:19:54 <truncated> create thread2020-07-09 15:19:54 <truncated> Init done!2020-07-09 15:19:54 <truncated> <truncated> 15:19:59 <truncated> <truncated> 15:20:00 <truncated> g_sale_hash_rate = 550002020-07-09 15:20:04 <truncated> Version num 42020-07-09 15:50:05 <truncated> avg rate is 56740.91 in 30 mins2020-07-09 15:50:05 <truncated> pcb temp 31~57 chip temp 54~80

### Reply 2:
Code:usbcore: registered new interface driver usbfsusbcore: registered new interface driver hubusbcore: registered new device driver usbmedia: Linux media interface: v0.10Linux video capture interface: v2.00pps_core: LinuxPPS API ver. 1 registeredpps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <truncated> clock support registeredEDAC MC: Ver: 3.0.0Advanced Linux Sound Architecture Driver <truncated> Switched to clocksource <truncated> Registered protocol family 2TCP established hash table entries: 2048 (order: 1, 8192 bytes)TCP bind hash table entries: 2048 (order: 2, 16384 bytes)TCP: Hash tables configured (established 2048 bind 2048)UDP hash table entries: 256 (order: 1, 8192 bytes)UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)NET: Registered protocol family 1RPC: Registered named UNIX socket transport module.RPC: Registered udp transport module.RPC: Registered tcp transport module.RPC: Registered tcp NFSv4.1 backchannel transport module.PCI: CLS 0 bytes, default 64Trying to unpack rootfs image as initramfs...rootfs image is not initramfs (no cpio magic); looks like an initrdFreeing initrd memory: 12924K (cce62000 - cdb01000)hw perfevents: enabled wi<rest of post truncated>

### Reply 3:
your numbers look fine.the reason for the 80 is it is the center of the three boards.the fans have a hub in the center. the the center board runs a tiny bit hotter.There is a fix I will post it. verbally.put a spacer in on the fans moving them a little bit away from the boards this will bring better air to the center board.the best spacer is a cut out old 1 inch fan. as it is free and really does get more air into the center board.these also work but are costly<link> have done a lot of ductwork testing and I recommend cutting an old 1 inch fan center which moves the push fans further from the boards and cools the center better.I found a source for longer screws that allow this to work.

### Reply 4:
All the fans are at 100%??? please check that first.

### Reply 5:
Phil gave you a good answer to this questions. And please, use the code for those big lines of text: [ quote][ /quote] (delete spaces or use chat bubble button when you edit that message).Not sure what's there to check, he either manually put them to 100% (doubt this since his/her knowledge is bad about asics according to questions put by him) or more probable reason is that environment temperature is high and you can see that startup temp is already between 54 and 80 due to Chip Warmup that is happening as well (this cannot be disabled on default firmware) therefore, fans should and will ramp up.Also, T/S17 gear has good fan curve afaik.

### Reply 6:
The T17 gear fans are configured to maintain the equipment at 75 C, if he tell me the fans are working at 100% then his equipment have the same configuration as the T17, if the fans are working lets say 70% then that tell me that the configuration for his equipment is 80 C.EDIT:I just visit BITMAIN webepage:My recomendation is install a 3rd party firmware and undervolt the equipment, in that way you can make it working at 75 C or less, is better be safe. If you dont want to do that just make some upgrades to the miner room (like divide the room, put a active exaust, etc.).Sorry for my english.

### Reply 7:
You are wrong. the readings for chips are always higher then the readings for pcb he has great pcb numbersall under 53 which is far under 75his chip numbers are also good all under 85the single chip at <rest of thread truncated>
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22023,"Date: 2017-12
Topic: IBM 2980 Delta DPS-2980AB-A Voltage Adjustment
### Original post:
I took my 2980 PSU apart to play with it and see if the voltage would adjust some and it will. Can only get to the small adjustment pots with the cover removed the access panels don't open enough up to get to them.See Video Voltage Adjustment is 11.9 to 12.9 This is with no load I Don't have all my connectors to make up the pig tails to load test it yet. I have pictures but can't figure out how to post them.<link>

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23498,"Date: 2021-03
Topic: hijacked s9
### Original post:
Where do you mine? I mean what pool do you mine?The pool status seems weird are you sure that you flash it through an SD card?Try to flash it with some custom firmware like Braiins OS or the firmware modded by thierry4wd you can find it from here <link>

### Reply 1:
The virus will be in the control board. Try swapping it for a different one or try a different OS. Braiins OS works well although its not proven to find a block yet. But it hashes and if you get the Plus version you can set a power limit and it will auto tune to the best/most efficient settings based on the power limit.

### Reply 2:
hi, from what I see, it will indeed seem that the miner is corrupted ... I confirm ""the virus"" is found exclusively in the control card ... the hashboard cards are not affected ...if the flash by sd card (if it is done well) does not give result ... I am very surprised ... or a virus particularly efficient ... the solution will be to return with SSH, and to see what it goes below! but sela is very difficult to explain, you must know the files of the miner and know how to use SSH, or even unlock it, because if it is really a virus, it must necessarily have locked SSH.another possibility, very very rare, but it is possible that the miner just corrupted a file, notably the ""miner-stat.cgi"", the miner actually works perfectly, but the info displayed is wrong.

### Reply 3:
Hi, I got a used miner, it seemed to have worked fine for some time, but suddenly yesterday it changed mining address and pool, I tried flashing it with SD card but nothing changes. Is there anything I can do to recover him?The ""hacking"" affects the board or the chains? (ex. can I use the chains in another s9 without worry?) To safeguard the other miners in the network, if I change the admin password of the other miners will they be safe?<link>

### Reply 4:
Are you sure the Sdcard flash was done right? did you try to flash another working miner to confirm that both the files and the Sdcard function well? I remember someone mentioned that some viruses can corrupt the boot loader which is used to flash the firmware from the Sdcard to the DRAM, and so if that is the case, the control board is bricked for good.No, it's not totally safe, you need to isolate this miner, use a different router / Vlan until you confirm the virus is gone completely.

### Reply 5:
I installed hiveOS, is it good? thierry4wd links aren't working.changing the admin passwords of the other miners will it be enough to protect them? and the ""virus"" is it in the board or in the chains?

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22045,"Date: 2017-12
Topic: Mining Hashrate Wild Fluctuation Issue
### Original post:
I purchased a used Antminer S7 and was able to download software and join a pool and setup a backup pool. I love the idea of being part of this and contributing to the success of bitcoin. I am not very technically savy though so getting to where I am now has taken me a while. It was so exciting to see my miner go into action and reach 4.7 TH/s but almost immediately it began dropping down to about 1.5 TH/s. My dashboard shows that it will rise to a peak of 4.k ish and then immediately drop down again. It does this over and over in a repeating cycle. The stats show that it is only averaging 2.24TH/s. Of course I don't know if I have failing hardware or if there is some sort of configuration I could look into changing. Hopefully somebody can offer some troubleshooting advice and someday I hope to be able to pay it forward. And if I am not posting this in the right area I apologize in advance. Thanks, Steve.

### Reply 1:
Login to your miner's web interface and click ""Miner Status"".Whats your chip temps?To my experience this should stay under 65 degrees celcius.Whats the numbers under the ""HW"" column?These numbers fluctuate. Ideally should be zero. Over a period of 12 hours i see anything around 8 to 35 on some boards. One of my board goes around 200. Most of them are 0.Do you see any ""x""s under the ""ASIC Status"" Colums?You might see this very rarely. If there are many present your chips are probably fried.

### Reply 2:
If your miner is too hot or high temp you can experience of drop hashrate its just like a computer if your cpu is getting high temp your computer will slow down.. Can you have screenshot overview with temp and hashing power?If you are living in cold places or with AC and maybe your problem is the hashing board is damaged.. Look this <link> check the number 6..

### Reply 3:
1. The miner is safe to run until 80c. It will not slow down when it reaches the thermal limit it will stop hashing altogether.2. The HW errors column will always have some number of errors. You will see thousands of errors very rapidly if the hardware is having issues.3. The 1.5t number you quote leads me to believe that you have 2 boards that are not hashing properly. Each board should run just over 1.5t on its own. i would try and figure out which boards are dropping then shuffle around the cables/connectors to see if the problem is based on the controller board plugs, the connecting data cable, or the hashing board itself.

### Reply 4:
What psu are you using to power the S7?

### Reply 5:
And, why 'download software'?They are stand-alone devices with no external controlling software. Only need a browser to access their GUI for setup.Source of the used s7? Was it ever underclocked or undervolted? If so ya may want to run at a lower speed to see if it becomes more stable.

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23949,"Date: 2022-05
Topic: New t17e - not hash
### Original post:
The kernel log states the <truncated> <truncated> Chain[2]: find 0 asic, times 1also thisCode:2020-01-06 <truncated> Chain[1]: find 0 asic, times 1and thisCode:2020-01-06 <truncated> Chain[0]: find 0 asic, times 1in plain English, the kernel log is suggesting that all 3 hash boards on your miner are burnt and have 0 asics, but that does not make sense since the miner is new as the tittle suggests, which makes me think that this is a power supply unit issue. Have you plugged the miner in anything that's above 240v or below 200v? The reasons why I think the PSU has got to be the problem, is based on the fact that these gears are known to have problems with PSU,and because I assume the boards are new and the chances of all 3 boards having 0 asic are slim to nothing, so the only logical thing left to think of is the PSU not being able to power the hash boards so they show 0 asics.The above assumes you have done the simple troubleshooting, such as trying a different pool, a different Ethernet cable, checked all cables, PSU's fans,miner's fans and so on.

### Reply 1:
Hello all.needs yr help in this case.i have no idea Code:2020-01-06 <truncated> Chain 2 only find 0 asic, will power off hash board 22020-01-06 <truncated> <truncated> <truncated> stop mining: soc init failed!2020-01-06 <truncated> cancel thread2020-01-06 <truncated> ****power off <truncated> Secure Digital Host Controller Interface driversdhci: Copyright(c) Pierre Ossmansdhci-pltfm: SDHCI platform and OF driver helpermmc0: SDHCI controller on e0100000.ps7-sdio [e0100000.ps7-sdio] using ADMAledtrig-cpu: registered to indicate activity on CPUsusbcore: registered new interface driver usbhidusbhid: USB HID core drivernand: device found, Manufacturer ID: 0xc2, Chip ID: 0xdanand: Macronix MX30LF2GE8ABnand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64Bad block table found at page 131008, version 0x01Bad block table found at page 130944, version 0x01nand_read_bbt: bad block at <truncated> bad block at <truncated> bad block at <truncated> bad block at 0x00000ffc00006 ofpart partitions found on MTD device pl35x-nandCreating 6 MTD partitions on <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : ""reserve1""NET: Registered protocol family 10s<rest of post truncated>

### Reply 2:
Additional to the above post it might also a control board failure.Much better check the miners status in WebGUI and make a screenshot then post it here. It will help us to find the issue check the below post and if you found one of this in the WebGUI you have a control board failure.Control board failure:Did you already try to hard reset the miner? It might fix your issue so try it first before you touch the hardware.Guide to reset: Run the miner at least 10 minutes then hold reset/IP reporter button for 15 seconds then release.Let see if it fix your issue but if not you might need to test your miner with different PSU like suggested above.

### Reply 3:
You can't reset the miner using the IP reporter button this way, that is simply just forcing the miner to request another IP address from the DHCP table in case the miner does not show on the network, it will not reset the miner.the IP report button can be used as a reset method if it is pressed before the miner is turned on, without letting go of it, turn the miner on until the lights blink and then let go, that worked very well on old mining gears like S9, as for the T17e that easiest and safest way would be to simply use the reset button, also, the 10 minutes thing is not important, I have done a dozen of reset and never waited that long before hitting the reset button, and never had an issue.

### Reply 4:
Not a fan of the 17e I have two.Try power off wait 1 minute power on..Check your volts in 2 lines of 230 volts and they need to have 14 or 15 amps as the 17e is a freaking power hog.you can supply power lower then 230 around 205 and up to 240.make sure your have enough amps.about 16 amps at 205 voltsand about 14 amps at 240 volts.switch power cables with a known good set of power cables.

### Reply 5:
Hithis error means ur hash boards from different miners or one or two or three of them repaired and u need code editor to read code from one of them and write to other two hash boards to match them together

### Reply 6:
Hey can u elaborate what I need and what should i do? seems i have simialr problem, i mixed hashbaords together and now they shows 0asics all 3 chains.

### Reply 7:
tornado_blade's point is valid, but not expressed perfectly, the error in the kernel log could be the result of a mix and match of hash boards, but it's not always the case, especially given that OP mentioned the miner is brand new, so to be an EEPROM issue is just unlikely.For your case however and since you know your boards are good and this started after mixing them, then you have two options.1- Get a tool that allows you to change the EEP<rest of thread truncated>
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21656,"Date: 2017-10
Topic: Why in Ukraine it is almost impossible to punish Bitcoin for mining
### Original post:
The position of the National Bank of Ukraine does not give formal reasons to attract the crypto currency lenders to liabilityYesterday it became known that the SBU and the National Police were interested in the activity of the mining farm, which was located in the idle basin of the ""Treatment and Restoration Center of the Paton Electric Welding Institute."" And although the permission to inspect the premises for the seizure of servers and computer equipment was provided by the court, the prospects for attracting ""currency producers"" remain illusory because of the official position of the National Bank.

### Reply 1:
Was there a point to this post?

### Reply 2:
A recent raid of a bitcoin mining farm in a state-owned, empty swimming pool in Ukraine raises questions about the legality of the cryptocurrency in the country. Following the event, the Ukrainian central bank promptly published a statement about bitcoins regulation and legal status.

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    ""hardware_name"": ""computer equipment"",
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]"
21396,"Date: 2017-05
Topic: S9 - 13.5t hash rate GH/S(RT) showing is less
### Original post:
The problem is 7/5 morning i have receive the bitcoin is lower than before, then i have checking my S9 miner, i have found the problem is 3 hash board, at center hash board the GH/S(RT) didnt show out, but for the ASIC status still is ok the LED is on.but at the miner pool, just showing from 6/5 6pm staring just hashing 8.5T not is 13.5T.then i have try to upgrade the FW to latest version + reset the miner, but the problem still is same.problem screen shoot - <link> GH/S(RT) - 8.5T but GH/S(avg) still is 13.5Tthen i still checking is what the problem, then i at kennel log found the this errorfound the error screen shoot - <link> i want to asking now is the hashboard error or is IO board error <truncated> on the next day, until just now 6pm i have moving my S9 miner going to the new place.then i have checking the antpool, but from the ytd i have mixing 2 miner 12.5T + 13.5T(problem s9)screen shoot for the ytd miner hash rate 26T - <link> just now 6pm 13.5T(problem s9) screen shoot hash rate look is still 13.5t - <link> now the problem is the miner problem or just is the bug only ?

","[
  {
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  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""IO board"",
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]"
14324,"Date: 2011-06
Topic: Now Slush is down?
### Original post:
I just took a trip for 1 1/2 hours, and when I got home I discovered that my 560 MH/s wasn't doing a darn thing while I was gone!Mostly reconnects, more reconnects, and an average of 0 MH/s.Is Slush getting DDoSed now?

### Reply 1:
I doubt it, it's still on the BitcoinWatch.com pie chart. More likely your connection to Slush's servers has broken.

### Reply 2:
Check statistics, more than 60% of miners left for other pools. I suspect much more long rounds now that capacity is down from 1500ghash/s to <truncated> have been down for a while and the DDoS earlier today just making it worse.

### Reply 3:
re-imaging time, definitely going solo.

### Reply 4:
hey changed the server address and added ip white listing..might be why you're having problems

","[
  {
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]"
15724,"Date: 2016-04
Topic: MOVED: [WTS] BITMAIN AntMiner S7 100USD coupon each for 0.025BTC [164 left]
### Original post:
This topic has been moved to Trashcan.<link> thread, wrong board.

","[
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10776,"Date: 2018-11
Topic: Current List of Competitive Hardware - October 2018
### Original post:
Cool thread. How often you think you'll maintain? Also, T1's are still accessible.

### Reply 1:
I would love to see a price per TH metric added.

### Reply 2:
In that case I demand he immediately put together an interface where I can put in my information and it will automatically tell me the best hardware for the buck. Kidding.

### Reply 3:
Do you mean that Halong or MyRig is still selling T1 units?Could you elaborate?

### Reply 4:
@ og more complex the price per th.you have price per th to usa due to 27.6% taxyou have price per th to europe due to 18% tax I know that variesyou have price per th to rest of world maybe with 0% tax.you have time to wait on gearyou have coupons you have shipping costyou have btc conversion ratesyou have watts per th.

### Reply 5:
On mobile.Thanks for the updated info. I'll update the whatsminer stuff this evening. I did have a tough time sorting through their chain. Missed something I guess.I'll add a price per TH that's no issue. With this being a global market. My idea is just keeping it basic based on from manufacturer. People can figure out the extra based on their situation, based on the links they follow.I'll maintain the thread to within a few days, as best I can.Can you elaborate on the T1's I just went by their webpage.

### Reply 6:
Great article, but here are some comments:Whatsminer is wrong.Wrong company name. Wrong web address.The right information is:MicroBT<link> and Pangolinminer.com are distributors for the Whatsminer hardware.

### Reply 7:
I have updated the OP.@Thanks again Haggs, it wasn't until I re-read your review that I found where I missed the information for Whatsminer. @Og, I added in a quick cost/TH. I'll get right on that super smart system, give me a year longer than the new forum software. I completely forgot about Myrig. Updated, not sure how many they still have. I think going forward, once hardware is only available on the secondary market I will remove all pricing data. Not the situation here but may be shortly.Appreciate all the input. Honestly I had to do this because I found myself getting lost in what has or hasn't launched. Feel free to let me know anytime there is anything you feel is lacking or would make a good addition/update.

### Reply 8:
Yes MyRig, I would consider them worthy to list in referance to the T1. Also MicroBT website correct? No real links and a bunch of wechat qc's? Contact email comes back undeliverable.

### Reply 9:
Two lesser ones are GMO from JapanTriple-1 from Japan

### Reply 10:
Have either of them put miners in the hands of customers yet? I thought GMO was close as in this month, but that they were still preorder. I am interested in triple-1 but same as above I didn't think they had delivered a miner yet.Maybe in an effort of fairness for current market sales I will add a general speculation section at the bottom for companies who have yet to deliver a miner but have announced competitive hardware.

### Reply 11:
How about Bitfury stuff?Bitfury Tardis miner, 6.3 KW. The Bitfury Tardis miner is offered with different configuration options:5 hashboards, 66TH/s, 6,3KW 95 mJ/GH, $55 per TH/s 6 hashboards, 71TH/s, 6,3KW - 88 mJ/GH, $58 per TH/s 7 hashboards, 75TH/s, 6,3KW - 84 mJ/GH, $61 per TH/s 8 hashboards, 78TH/s, 6,3KW - 80 mJ/GH, $65 per TH/s Each hashboard contains 128 Bitfury Clarke chips.

### Reply 12:
Yep, Bitfury is legit for sure.I think their most power efficient version of the new Tardis miner could make sense for big scale miners.<link>

### Reply 13:
I thought that by 'competitive' you mean the current gen. / top efficiency hardware?

### Reply 14:
Yeah I was doing some research on Bitfury last night, but need to do more. I have a post somewhere a fee months back about someone looking into the snow leopard, and I did read up on the tardis.Last I checked though they had a MOQ of 100 units. Here's where it becomes opinion and I'll defer to the community.Is a company that has a MOQ of 100 really competitive? I'm going to keep digging tonight, but if anyone can point me to a distributor or something where anyone can pick them up thag would be great If not I will add them at the bottom, under a industrial title or something of the sorts.Still looking into GMO and triple 1 waiting for a product to materialize. Keep the info coming people I appreciate the assistance in keeping this list up to date.Edit: MOQ may have changed, if I can find some hard facts that the panther had been delivered out to customers I'll add them with the tardis being speculation. They are tough, as I recall they didn't sell to the global public for many years and have only recently started doing this again.

### Reply 15:
Their previous gen. miner is called Bitfury B8.There is an old product page here: <link> <link> uses this 16nm chip <link> BlockBox AC actually consists of 176 pieces of these Bitfury B8 miners. <link>

### Reply 1<rest of thread truncated>
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    ""hardware_name"": ""Bitfury Tardis miner"",
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  },
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    ""hardware_name"": ""Bitfury Clarke chips"",
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10800,"Date: 2019-03
Topic: Review: Bitmain Antminer S15-28TH/s
### Original post:
Nice info and thanks for original link.

### Reply 1:
Original (Chinese): <link> <link> is a technology company specializing in high-speed, low-power custom chip design and development, successfully designed and produced a variety of ASIC custom chips and integrated systems. Bitmain was founded in 2013. In the same year, it launched the first generation bitcoin mining machine of the ant mining machine series - Antminer S1. After more than five years of development, the antminer series bitcoin mining machine passed S1, S2, S3, S4 Iterations of multiple models of S5, S7 and S9, the latest bitcoin mining models are S15 and T15, which will be sold on November 8, 2018.The Antminer S15 adopts a new 7nm chip process. The official evaluation of the S15 is durable, energy saving. Emphasizing the characteristics of ""high performance, more durable, and more power saving"". From the officially announced parameters, the Antminer S15 is built in. Standard and low-power mining modes. The officially announced parameters have a unit-to-power ratio of 57J/T in standard mode, and the unit-to-power ratio of low-power mode has reached 50J/T. Compared to the products in the current market, in terms of Bitcoin miners, this unit power consumption ratio has se<rest of post truncated>

### Reply 2:
Only wattage is specified because by themselves the Amps pulled or voltage in are meaningless. Only using the 2 together giving you wattage matters.A miner ran with a high line voltage will pull less amps than a miner ran on a lower voltage line. Yes, they could spec the min/max amps together with the min/max line voltage but considering it is very simple math to figure out makes it rather pointless.

### Reply 3:
Line voltage is variable no matter where you are, it even changes based on load so there is no reliable way to give a specific amperage rating.e.g.1500w @ 208v = 7.2a1500w @ 240v = 6.3a

### Reply 4:
This range of 6.3 amps to 7.2 amps is pretty much the correct range.I think the psu can run a little lower volts then 208 so off the top of my head my s15 does 1565 watts at 220 volts = 1565/220 or 7.113 ampsNow I went on line and they mention 200 volts as the lowest volts I can find.So 1565/200 = 7.825 amps may be max ampsAnd 6.3 may be min amps

### Reply 5:
true but sometimes a young child wants to hold an adults hand to cross the street.I would go into a long story about that, but it is not important for me to tell it to you.Only that you know a little kid once put his hand out for me to walk him across the street.So I went at my answer from that angle. Not anything wrong from your method just different angle for you than me.

### Reply 6:
Directly giving folks an Answer like that ^^ does not encourage them to learn and think for themselves....I gave the 'why' and stand by my answer as OP knows how to do the math so let them do it themselves based on what their line voltage is..

### Reply 7:
We may need to start a ""phil""-osophical thread. I like both approaches. The only thing to consider is fact checking if handed answers and mathematics in school isn't what it once was either. That given my 30A 240v amp lines wont touch a s15/t15 until the psu is rated for higher. As it's not worth the risk for my very small set up to short myself on any warranty at all.

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    ""hardware_name"": ""Antminer S2"",
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    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Antminer S4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  }
]"
15926,"Date: 2017-05
Topic: I want to start mining with my old laptop. Helpful advice welcome
### Original post:
Hello guys!I was thinking of starting to do bitcoin mining with my 8 year old tiny laptop (Asus EEE PC, still functioning only when plugging, battery's out). My room is airconditioned, so it's good enough to keep it cool. I can also borrow my dad's old unused HP laptop, and my sis' old netbook to mine bitcoins together.I don't know where to begin haha! I'm confused. Should I use Electrum wallet? Do I need to buy external hardware?Any helpful advice will do. I'm very new into mining with hardware stuff. Thanks!

### Reply 1:
No, don't mine bitcoin using a laptop, a pc, a server, a gpu,...As soon as you start mining with this hardware, the power will cost a lot more than the profit will ever be... A while ago, i estimated that a server with XEON CPU's and 6 of the best GPU's on the market today, running 24/7 at 100% (both CPU and GPU) would make about $11 a year in BTC (not counting the energy cost)...I've even written a blogpost about this very subject, please read the CPU and GPU section before even thinking about proceeding:<link> but not least: even if you have free hardware AND ""free"" power, and you don't mind spending hours/days setting everything up, you'd need to recompile old cpu mining software, since cpu mining has been removed from all recent versions of cgminer, bfgminer,...Also, if you would pool mine, it would take decades before you even reached the minimum withdrawal amount.Long story short: take a step back, don't do it...

### Reply 2:
Oh okay thanks for the heads up. I would better back off, change my mind and stick to some existing BTC opportunities out here.

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    ""hardware_name"": ""sis' old netbook"",
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    ""hardware_name"": ""XEON CPU's"",
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13410,"Date: 2015-07
Topic: Building cgminer on Windows with MinGW, step-by-step (2015-07-10)
### Original post:
For the love of .. please don't quote this entire post in any reply, or see your reply deleted - If you must quote, quote only relevant parts.This is a lengthy and picture-heavy rundown of compiling cgminer on Windows by somebody who hasn't done so in over a year and ran into various problems doing so from scratch - procedure for 2015-07-06.If you don't need any code changes, just use the regular cgminer builds.If you do need a custom Windows binary, consider cross-compiling in a Linux environment.If you enjoy mild frustration, continue reading Although the result works (well, so far), there's always a chance that it doesn't perform the same as the official builds due to differences in library versions, kludgy code edits to get things to compile, and so on.It's also entirely possible that things could be done more efficiently ( in terms of compiling - starting this thread out <truncated> on purpose ) - if so, leave your replies ""build cgminer for windows""So you want to build cgminer for Windows, and presumably on Windows.First thing you're likely to do is hit up google with exactly those search terms.Lucky me, the very top result points to a document at the official github reposito<rest of post truncated>

",[]
15944,"Date: 2017-06
Topic: Bitcoin Mining 101 Just The Basic Facts (2017)
### Original post:
why would it drop? I mean how, difficulty gets more, the more blocks are mined, isnt it?

### Reply 1:
How? By having > 10minutes per block average during the 2016 blocks generated (number, not year) as below:Code:Date Difficulty Change Hash RateJun 04 2017 678,760,110,083 13.90% 4,858,754,124 GH/sMay 23 2017 595,921,917,085 6.42% 4,265,775,241 GH/sMay 10 2017 559,970,892,891 7.28% 4,008,427,786 GH/sApr 27 2017 521,974,519,554 0.22% 3,736,439,151 GH/sApr 13 2017 520,808,749,422 4.24% 3,728,094,244 GH/sMar 30 2017 499,635,929,817 5.03% 3,576,533,297 GH/sMar 17 2017 475,705,205,062 3.24% 3,405,230,497 GH/sMar 03 2017 460,769,358,091 4.54% 3,298,315,540 GH/sFeb 18 2017 440,779,902,287 4.41% 3,155,225,442 GH/sFeb 04 2017 422,170,566,884 7.43% 3,022,014,630 GH/sJan 22 2017 392,963,262,344 16.64% 2,812,940,600 GH/sJan 10 2017 336,899,932,796 6.05% 2,411,623,656 GH/sDec 28 2016 317,688,400,354 2.43% 2,274,102,150 GH/sDec 15 2016 310,153,855,703 8.16% 2,220,167,778 GH/sDec 02 2016 286,765,766,821 1.76% 2,052,749,317 GH/sNov 18 2016 281,800,917,193 10.68% 2,017,209,539 GH/sNov 05 2016 254,620,187,304 0.40% 1,822,642,296 GH/sOct 22 2016 253,618,246,641 -1.90% 1,815,470,125 GH/sOct 08 2016 258,522,748,405 7.17% 1,850,577,916 GH/sSep 25 2016 241,227,200,230 6.82% 1,726,771,560 GH/sSep 12 2016 2<rest of post truncated>

### Reply 2:
Difficulty is determined by how fast the blocks are found -- not how many blocks have been found.The network tries to hold an average of 10 minutes per-block. If more/faster miners are hashing and blocks are solved too fast, diff goes up to increase time to solve a block. If the diff correction is too much or miners are taken off line/throttled back (say in summer) and it takes longer than 10 min on average, then the diff goes down.edit: In addition to the OP's 4 points there is one more that certainly must be in the list:5) Bitcoin miners are LOUD! This is because the fans run at fairly high speeds to move enough air against high back-pressure to dissipate the 1-1.5kw of heat produced. As in vacuum cleaner to hair-dryer loud. No you cannot change fans to quieter ones -- they cannot move enough air against the back-pressure inside the miners.

### Reply 3:
I am living proof that the above is a good point for all new miners to really focus on! I thought I had it all figured out (cost, return on investment, mining difficulty, the market, etc) then when my S9 came in the mail I discovered that I COULDNT EVEN USE IT!!! The circuitry in my old house couldn't have safely handled the load...Thankfully a kind person from this very board helped me out with hosting it for me - but new miners please please don't fall into the same trap I did!Make sure your electrical circuit can handle it - or perhaps lose a lot of money being forced to sell it at a loss and not ever even get to use it......Just wish I had done a bit more research on circuits before investing.Lesson LEARNED! Won't ever be making that kind of mistake again

### Reply 4:
Bitcoin mining will became more and more difficult with time, it is really a good point o view what you have listed here, mining btc is headed now for professionals and big companies, also the ASIC mining efficiency must always increase, if not, that would be a huge problem to power those electricity hunger miners.

### Reply 5:
this is the effect of bitcoin increasing price in the market you guys should pray it will go down for quite a while to make mining function again.

### Reply 6:
^^ BTC mining works just fine and as it is designed to. Diff going up is all part of it and not something bad nor <truncated> Perhaps time to lock this thread before it diverges too far from its '101' theme??

### Reply 7:
Agreed, I've locked it to keep it clean. The thread was not meant to discuss the viability of mining but to give basic (think universal) mining info to anyone thinking of starting to mine BTC. Deciding to mine or not, or if BTC is borked or not all have MANY multiple threads where these can be discussed to death.I am going to add NFW's #5 to the list. Now that the thread is locked anyone else that has a BASIC rule about mining in 2017 can feel free to PM and if I agree it's a basic rule than I will add it to the list.

### Reply 8:
1) CPU and GPU Bitcoin mining is dead, you will never mine anything but dust and will never receive a payout from a pool. 2) Bitcoin difficulty will adjust, meaning so will your income. Difficulty long term trend has been a steady increase for the last few years. Of course difficulty could drop, it has before, but its rare when it does and even more rare is a drop that is meaningful.3) Bitcoin miners in general produce significant heat loads and you will have to deal with it one way or another.4) Bitcoin miners can take significant electrical resources to power them. You should know 100% if the circuits powering your miners are rated for the load you're put<rest of thread truncated>
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12111,"Date: 2012-11
Topic: cgminer is hanging when it first starts
### Original post:
Just added two new gpus to another rig, and now when I am trying to run cgminer it hangs atThoughts?I can't find any information on what signal 11 means.

### Reply 1:
Since I can't delete the thread, I'll post the solution I discovered.Don't try to run 4 GPUs off of 512MB of RAM. What a dumbass I can be sometimes...

### Reply 2:
Segmentation fault first hit in a Google search tells you that.<link>

### Reply 3:
Yes. You must have missed the second post where I pointed out I discovered what the cause was. Don't be a dick, you get dick back.

### Reply 4:
Well idiot you said ram was the problem in second post so if you want to be smart ass at least get your facts straight.

### Reply 5:
lol which is what often leads to a segmentation fault according to the link you posted. ""idiot"" lol Come on man, be civil. No reason to be a jerk when someone asks a question.

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23109,"Date: 2019-10
Topic: S9 miner ip not detect after flash with as card
### Original post:
Hi every body I flash my antminer s9j like others but some of them after flash with sd card , ip not detect and red and green light not work , I dont know how to doI use advanced up scanner and up reporter but nothing detect , red and green light after flash not work , I reflash again and again but nothing happen , when I flash them red and green light blink but after I replace jp4 to r4 red and green light dosnt work and up not detect

### Reply 1:
You need to flash them again using a different SD-card , if the led lights don't blink then it's unlikely your miner is going to work, therefore it will not be request an IP address from the DHCP server, I don't have a technical explanation on how this problem happens, but sometimes an SD card just won't work well for a certain miner.

### Reply 2:
Avoid newer cards, use the older, smaller and slowest mini sd card you can find. Don't use SDXC and preferably not SDHC, the smaller the better, under 1g.I could mention that an old SDHC reader isn't ever going to read an SDXC card, for example, but there is more to it.Another reason is the way you are imaging the cards. DD under Linux is always the best way, as Windows and osx are too unreliable. In any case do a sync after dd before ejecting.

### Reply 3:
Yeah:sometimes a sony will work sometimes it won't sometimes a samsung will work sometimes it won'tI have a dell laptop it does great imaging I do almost all my usb and sd cards with it. Win10 is what I use.I have multiple pc's and for some reason this laptop is great to burn cards and sticks.I was looking to burn a usb stick for a mobo bios I could not get any stick to work fired up the laptop stick works fine when burned on the laptop.I have work with computers since 1974. Back then we used 3600 foot reels of tape inch wide.Sometimes a tape could not be read we would move it from reel to reel to reel and 1 machine would read it. Gear has been like this for year.BAF tapes were good on almost every reel to rell we had. It all changes yet stays the same.

### Reply 4:
This always happens mostly fake SD card won't work you need to get a better SD card it must be the authentic one. If you make a program recovery with SD card and didn't work when trying to flash the miner it's because the program or image from the SD card is corrupted you need to repeat the procedure to make it work redownload everything, remake a program recovery again then reflash. Also, check the SD card terminal under the control board it might be full of dirt and rust. Solution: cleans it with thinner(lacquer flo) then resolder the terminal. There are some control board that you need to jumper 2 terminals to enable sd card flashing check the image under this guide below[/url].- S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery

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    ""hardware_name"": ""SDXC card"",
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    ""hardware_name"": ""SDHC card"",
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    ""hardware_name"": ""dell laptop"",
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    ""hardware_name"": ""usb stick"",
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    ""hardware_name"": ""control board"",
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]"
13611,"Date: 2019-03
Topic: OFFICIAL CGMINER mining software thread for linux/win/osx/mips/arm/r-pi 4.11.1
### Original post:
This is the official thread for support and development of cgminer, the ASIC bitcoin miner written in c, cross platform for windows, linux, OSX and other, with monitoring, fanspeed control and remote interface capabilities. There is NO SUPPORT for CPU, GPU or altcoin mining in this thread, nor older versions with that functionality, nor any support for unofficial forks of this code.This code is provided entirely free of charge by the programmer in his sparetime so donations would be greatly appreciated. Help can also be obtained on IRC: irc.freenode.net #cgminerREAD THE README INCLUDED IN THE ARCHIVE BEFORE ASKING QUESTIONS WHICH CAN ALSO BE FOUND HERE:<link> that I can NOT provide free personalised support via email or personal messages under normal circumstances so they will usually be ignored.Apologies, but the demand is just far too great and I must prioritise my time.All files available for DOWNLOAD from here:<link> builds are in <link> files are compressed with lrzip <link> for much better compression and supports extreme encryption technology which is ideal for securing wallets.LATEST RELEASE: 4.11.0 see:<link> tree:<link> git source tarball:<link> OSX binaries:<link> This c<rest of post truncated>

### Reply 1:
Hi all,I have added cgminer support to rig-monitor. Check here: <link>

### Reply 2:
Hi ck, you uploaded this file, here?: <truncated> was some other people.

### Reply 3:
Nope. Only the one at <link> and the source <link> is uploaded by me.

### Reply 4:
i noticed something strange with the started time/date, it shows Code: cgminer version 4.11.1 - Started: [1970-01-01 01:38:34.881]on one system, and Code: cgminer version 4.11.1 - Started: [1971-12-19 03:49:24.590]on the other, maybe some bug? i get correct output from command date

### Reply 5:
HiWhere download binaries CGMiner 4.11.1 for windows ?

### Reply 6:
A page back says this

### Reply 7:
Hi guys, I have just installed my 1st linux system ""mint"". I have been a windows tech for 20 years so I am having to teach this to myself as i go. That being said I am wanting to try and run some old gridseed blades (80 chip).I am totally confused on what ver of cgminer to use, and i am just learning how to install things in linux, (took me a while to install java just so i could do the capita to log in)... I dont think i need to install any drivers like the virtual coms for windows. But I need just a little guidance. feel like I am back in the 80's learning DOS!

### Reply 8:
CGMiner doesn't support gridseeds, or any other altcoin miner. Read the Top Post for more information.

### Reply 9:
Refresh RPC time (10 seconds in cgminer 4.11.1, 60 seconds in cgminer <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops <truncated> CreateNewBlock(): block weight: 812 txs: 0 fees: 0 sigops 400cgminer 4.11.1[2018-11-08 00:29:32.408] Solo mining to valid address: <truncated> 00:29:37.407] Solo mining to valid address: <truncated> 00:29:42.409] Solo mining to valid address: <truncated> 00:29:47.408] Solo mining to valid address: <truncated> 00:29:52.410] Solo mining to valid ad<rest of post truncated>

### Reply 10:
Hi all,sorry if I found not the answer already given.I built cgminer 4.11.1 at a linux system with only gekko support. Works fine and I can use --gekko-2pac-freq.I built same at Raspi zero w. Works too, but --gekko-2pac-freq is ignored?Both machines with more than 1 gekko 2pac. Any hints?Thanks in advance.

### Reply 11:
Did you find the solution? I'm looking for the same thing, 10s looks to be quite an overhead for my BTC node

### Reply 12:
I have written a RESTful API wrapper for cgminer in Rust:<link> check it out and provide any feedback you might have on GitHub.My goal (someday) is to get ASIC/miner vendors to standardize around an API to make it easier to build high quality tooling for managing miners.Cheers!

### Reply 13:
It already is a standard API - that I wrote.All the large vendors use the equivalent of my API code (or my actual API code) in their miners.The differences are Bitmain who broke compatibility by changing the field names and scale for hash rates and changing the data format for LST but the interface is<rest of thread truncated>
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21962,"Date: 2017-12
Topic: 2 miners 1 PSU possible?
### Original post:
Is it possible to hook up say 2 S9s to one psu large enough to handle both? This would save purchasing a psu plus wiring another outlet.

### Reply 1:
It is possible but you will need to find a 3500w PSU and I dont know any quite that large.

### Reply 2:
In addition to find a single power supply that will handle the load, you now have both S9's hostage to the failure of a single PSU until you replace it. I personally would rather have separate PSU's for the S9's for a variety of reasons.

### Reply 3:
Ok good points. Thank you

","[
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  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""3500w PSU"",
    ""hardware_is_owned"": false
  }
]"
10733,"Date: 2018-05
Topic: Reviewing the Halong Mining DragonMint T1, a 10nm SHA-256 Miner
### Original post:
What's the behavior if you point it to a pool that doesn't support version rolling? Does it show an error and goto the backup pool?

### Reply 1:
Great work. Nice teardown. Thanks for the post. Loving my Dragons!

### Reply 2:
It's nice to have a good look at this machine, thank you. I've waited ever since from January for this to happen and now it finally has.

### Reply 3:
Good review. Pls update us after few weeks hows the performance ? Also QUESTION: Since you opened the Miner , did you see SAMSUNG on any off the chips ? Curious to find out what the manufacturer or manufacturing process 10nm or 7nm??

### Reply 4:
Looks like there are heat sinks on both sides, you would have to pry them off of whatever adhesive they used. I would hate to break a new toy.

### Reply 5:
Will update after a bit for sure!I did try to pull off the heatsinks from both sides, didn't budge with gentle pressure. It's got some good adhesive, and I don't want to break the toy just yet! It would be interesting if each board can accommodate 10 more chips. You'll note one side is fully populated with heatsinks, one is missing 10 - perhaps airflow is sufficient enough. If so, on the 3 chain ASIC setup they have, that would mean an increase from 138 total chips to 168, nearly a 22% increase.I'd imagine this would create way more strain too on the power pull. 22% on top of even the 1584 I reported puts it at around 1930 watts. It also brings the 16TH spec to 19.5TH!We're going to need some bigger power supplies

### Reply 6:
Now *that* is a review. Non-political, entirely on-point and shows that you studied Hagg's and other members reviews to see how to do them properly. Very well done and worthy of some Merit.

### Reply 7:
WTF? it's an S9 for fck sake...exact clone..with overt ASIC boost....Big fck deal..rip off

### Reply 8:
Slightly more efficient than proven S9.

### Reply 9:
Right looks like totally copy of S9, they need to develop something new not resell with same ASCI with little bit more comsumption and Hash rate...

### Reply 10:
It is not an S9,that is just a silly statement that everybody with no technicalknowledge says.The design is close to what Innosilicon has done with its current gen. miners, as I have stated many times earlier..

### Reply 11:
It looks like an S9 but remember that you can find all the design files for an S9 in shenzhen if you know where to look. And you dont even need the design files to reverse engineer it. you just need cash and connections

### Reply 12:
THanks for the breakdown, very well made post ! Who cares if it looks the same. BTC ASIC design is no secret anymore. Bitmain is probably plotting to destroy the market or extract as much from it before other competitors like Halong eat up its market share, and more importantly, its hashrate quasi-monopoly. No supply monopoly, no coin control.

### Reply 13:
There is a huge inductor on the PCB so it looks like there is a DC/DC converter on board. Can you readthe chip number of the chips that are directly underthis inductor on the other side of the PCB?

### Reply 14:
all of mine are about .105 watts per 1gh at the wall.1 has a dropped board<link> unit old firmware on this one look at 1 hr rate of 15.1tworkername"": <truncated> ""hashrate1m"": ""19.8T"", ""hashrate5m"": ""16.8T"", ""hashrate1hr"": ""15.1T"", ""hashrate1d"": ""142T"", ""hashrate7d"": ""34.6T"", ""lastshare"": 1523633408, ""shares"": 5329198977, ""bestshare"": 65201213603.0, ""lns"": 5307498287.915012, ""luck"": 1.01, ""herp"": <truncated> unit old firmware look at 1 hr rate of 15.0t""workername"": <truncated> ""hashrate1m"": ""11.7T"", ""hashrate5m"": ""13.7T"", ""hashrate1hr"": ""15T"", ""hashrate1d"": ""9.66T"", ""hashrate7d"": ""2.05T"", ""lastshare"": 1523633409, ""shares"": 311079480, ""bestshare"": 226462495.0, ""lns"": 310052756.1595064, ""luck"": 1.0, ""herp"": <truncated> unit old firmware look at 1 hr rate of 10.6t this is the one with dropped board.""workername"": <truncated> ""hashrate1m"": ""12.4T"", ""hashrate5m"": ""11.7T"", ""hashrate1hr"": ""10.6T"", ""hashrate1d"": ""6.56T"", ""hashrate7d"": ""1.39T"", ""lastshare"": 1523633409, ""shares"": 210180304, ""bestshare"": 196625949.0, ""lns"": 209494784.5212819, ""luck"": 1.0, ""herp"": <truncated> unit old firmware look at 1 hr rate of 15.2t""workername"": <truncated> ""hashrate1m"": ""16T"", ""hashrate5m"": ""16T"", ""hashrat<rest of post truncated>

### Reply 15:
Great question! Shows up as dead, and tries to find the next pool.Also, I didn't specifically show off the dark accent option of the GUI! I made a clip of me changing the that around and you can see the pools. Pools 1 and 2 are the ones that don't support ASICBoost, where the third is compatible. This is the interface after applying the firmware - you can see some GUI changes! A welcome addition. I would really like tuning capabilities in a future update! <link> you! And thanks for your prior reviews as well - I looked at one of your prior reviews for formatting ideas<rest of thread truncated>
","[
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    ""hardware_name"": ""S9"",
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  },
  {
    ""hardware_name"": ""Innosilicon current gen. miners"",
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23698,"Date: 2021-09
Topic: Avalon 1246 with less than 70Ths
### Original post:
Hi, how are you?I have 6 avalon 1246 83/85ths. One of the avalon are mining less than 72 average. The 3 board are online.I paste here the log, maybe someone can help <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':3923,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1238520.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[284] <truncated> LW[256623] MH[0 0 0] HW[0]0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] ASICCRC2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DH[5.314%] Temp[38] TMax[82] TAvg[66] Fan1[6469] Fan2[6419] Fan3[6374] Fan4[6403] FanR[84%] Vo[339] PS[0 1218 1357 234 3175 1356 3516] PLL0[3187 6 4 10723] PLL1[6430 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10 6 7474] PLL2[5432 12 7 8469]0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 GHSspd[69286.10] DHspd[4.466%]0 0 0 0 0 0 0 0 0] CRC[0 0 0] <rest of post truncated>

### Reply 1:
I'm not familiar with Avalon logs but let me try to help you. According to your logs, it seems fine I don't see any errors and temp seems fine except on the average hashrate it shows around 60TH/s according to the Avalon site the average hashrate of this unit is around 90TH/s, -3%~+3%.So one of the hashboard might be the culprit or your PSU not giving enough power to one of your hashboard. Since you have 6 Avalon miners try to use one of the PSUs that you know working to test if it was a PSU issue. I don't know if this unit can run with one hashbord but try to run them one by one to see which one is defective.

### Reply 2:
The miner needs some time to settle, it does not seem like this miner has been online for long enough, leave it online for 4-6 hours and see if that changes anything, also the way you post the logs is so messy, use the code tag when posting anything like that.

","[
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13392,"Date: 2015-05
Topic: GuiMiner and ASIC
### Original post:
Salve, qualcuno potrebbe spiegarmi come posso settare un ASIC sul mio guiminer dopo averlo installato (l'ASIC) sul pc? Come posso fare se ho pi di una chiavetta ASIC usb?Hi, may someone explain me how I can set an ASIC on my GuiMiner after I've installed it (the ASIC) on the pc? How can I to do if I have got more then one USB ASIC?

### Reply 1:
GUIMiner is an OLD GPU mining software. It does not work with ASIC's. You will need to use CG Miner or BFG Miner which do support many, but not all, ASIC's.

### Reply 2:
There is also an italian thread if you need it: <link>

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    ""hardware_name"": ""USB ASIC"",
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  },
  {
    ""hardware_name"": ""GUIMiner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CG Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFG Miner"",
    ""hardware_is_owned"": false
  }
]"
22812,"Date: 2018-11
Topic: Best way to shut down an Avalon 741?
### Original post:
For the 741, there's 2 ways to shut it off - turn off the controller first or the main power supplies.For mine, I figured that if I shut down the controller first, that would end the data stream and the miner would go to idle. And it did, so I could then safely give it a few minutes to cool off before turning off both power supplies (HP server 1200 and 750 watt PSUs).

### Reply 1:
hi,and how to you shut down the controller safely?

### Reply 2:
That's what I tend to do. It just seems to be the gentlest way to power down the equipment.I actually run 2 741s on 2450w psus which is why I started thinking of a way to avoid just throwing the switch.I tend to stop cgminer from the status page. Watch the miners idle until they are cooled down to the touch. Then throw power and disconnect. After this if I have to move the controller I unplug it.

","[
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    ""hardware_name"": ""HP server 1200 watt PSU"",
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    ""hardware_name"": ""750 watt PSU"",
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  {
    ""hardware_name"": ""2450w psu"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""cgminer"",
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14562,"Date: 2012-03
Topic: BIP 16 switchover date pushed to April 1
### Original post:
Reposting from the bitcoin-development mailing list:Mining support for BIP 16 is still under 50%, and won't possibly be over 50% by March 1. Which means we need a new <truncated> date:Re-evaluate support: March 15'thTarget switchover: April 1If you're already supporting BIP16, restart bitcoind with the argument: <truncated> to delay switchover until April 1.Hopefully this will be the last delay; Tycho has told me that the deepbit pool will support BIP16 as soon as he's able to merge and test the changes, which will put support at well over 55%.If you are a solo or p2pool miner you are strongly encouraged to upgrade bitcoind/Bitcoin-Qt in the next month; if you don't, you risk creating orphan blocks that the rest of the network will reject (and that risk will rapidly become greater over time as BIP16 transactions start to appear in the main block chain and get relayed across the network).

### Reply 1:
Hmm, I wonder if there is a hidden meaning in that date? Sam

### Reply 2:
Or maybe it would be safer to push it back to the second Friday in April on the 13th.

### Reply 3:
I have asked about this specifically, and your answer was: Old solo mining clients will produce perfectly valid blocks (*)Now you are saying the opposite. Was your answer wrong?Or are you now trying to ""encourage"" solo miners to update without factual need (ie. FUD)?Please clarify, and may protocol changes be delayed at least until the community can understand the implications. Not everyone dedicates full-time to bitcoin, yet may be affected.(*) see: <link>

### Reply 4:
The problem [as I understand it] is if somebody purposely creates a transaction that is valid under the old rules, invalid under the new ones. If an old client creates a block with that transaction, the majority of the network will not acknowledge it because of the invalid transaction, so eventually the network will orphan that block with one that does not contain the invalid transaction.It's not so much a chain-fork where we end up with two separate chains, but if somebody was determined to hurt old miners, they could create this temporary chain split by making a transaction like that. Old miners would then be working on a chain that will eventually be orphaned once the majority of the network has created a longer chain.EDIT: If I'm wrong with the above, please delete this comment! But the above is my understanding based on the lengthy BIP16/17 threads, but something may have been stated by someone in those threads that was later determined to be inaccurate.

### Reply 5:
eleuthria is right.The <truncated> scenario is:+ Somebody gets a valid BIP16 transaction into the chain.+ They then spend that transaction by broadcasting a 'standard', non-BIP16 transaction, BUT they create a signature for the BIP16 part that old miners consider valid, new miners consider invalid.+ The old miners will add that 'poisonous' transaction to their memory pool and if they include it in the blocks they mine then those blocks will be rejected by most of the network.makomk pointed out a while ago that I hadn't noticed that old miners will accept spends of half-valid BIP16 transactions, because the old code doesn't check to see if a transaction is spending a non-standard input. He's right; one of the changes in the 0.6 release is an AreInputsStandard() method, to make upgrading smoother next time.Executive summary: if you are a p2pool or solo miner you should upgrade before the switchover date (April 1, if all goes well) or there is a good chance you'll produce nothing but orphan blocks. I welcome suggestions on how to effectively get that message out to the community.

### Reply 6:
I wouldn't worry about getting the word out to the community. The lack of enthusiasm about upgrading to BIP 16 after it has been agreed upon may cause a lack of confidence in the Bitcoin community. Progress is vital to the survival of Bitcoin. At the risk of speculating, I think if the price drops enough, then the risk to upgrade will be mitigated. If the new client is nearly ready for release as well, you might prepare a press release to time them together.

### Reply 7:
This is really good news! It's about time we get P2SH into the protocol.The other good thing is that there is plenty of time for miners to wake up and upgrade. In best case the switch happens the first of April so there is no hurry.

### Reply 8:
Why the percentage of BIP16-supporters stopped growing ?

### Reply 9:
Let me summarize:In the last ~4 weeks you learned that the change (that was scheduled for tomorrow) will open up older clients to a major security hole (DoS).Instead of modifying or dropping the change, somebody decided that it should still be deployed as is.The community has not been informed about this problem. The information didn't get to me for example, although I specifically asked for it. Nobody bothered to update my thread. I had to ask again and nai<rest of thread truncated>
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    ""hardware_name"": ""Bitcoin-Qt"",
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15934,"Date: 2017-06
Topic: MOVED: Do You Know a Good Chinese Manufacturer?
### Original post:
This topic has been moved to Trashcan.<link> thread in altcoin mining.

",[]
10928,"Date: 2021-01
Topic: Pangolinminer & Whatsminer FAQs
### Original post:
Hello this is Bill from pangolinminer team.Today i accidentally find out there were some negative comment about Pangolinminer and Whatsminer. (We didn't show up earlier because we are too busy at selling those new miner)In this case, i would like to clarify things and tell more about whatsminer. You guys can ask anything about the whatsminer, i will try to answer about it.Also we are planning to make a streaming for showing the miner, and if its necessary we will send miner to Members of this forum for evaluating the miner and make review. (May not be free, and we want some people who can give us credit in this forum)However, some topics will not be talk about1. Any events related with BITMAIN2. Detail about product development (new tapeout etc..)3. Specified Person inside the company.Before i start, i would like to clarify few points.1. Whatsminer is not Antminer. But the engineer is come from BITMAIN. 2. Pangolinminer is Shareholder of Whatsminer Company. Who in charge of overseas sales.

### Reply 1:
It's a bit late in china now, i will come back tomorrow.If you guys have any question, please let me know. I will check it and try to answer you tomorrowBTW, for those new to this topic. You can go to <truncated> for finding out more about Whatsminer.Briefly, the specs will be like belowHashpower : 11.5~12.0th/sPower Consumption : 1800~2100WPrice is around 1k USD.And it look very similar to Antminer. You can see below the video from us.<link>

### Reply 2:
I'd be happy to buy one and do a thorough review.I sent you e-mail to <truncated>

### Reply 3:
Would love to take you up on that offer. But I'll need a 110v power supply.

### Reply 4:
Yeah, it would be great if Phil is also interested in making a review.

### Reply 5:
@ Pangolinminer: One person here I highly recommend as a reviewer is philipma1957. He has done several high-quality reviews, has exceeding good Trust and would be an excellent person to contact.

### Reply 6:
Yes, many of us would trust a review from philipma1957 and/or HaggsFin.

### Reply 7:
We sealed the deal today with Pangolinminer and one Whatsminer 11.5 Th/s miner with power supply is on the way.Should take about a week for it to arrive here in Finland.

### Reply 8:
Can wait for your review. Please keep us posted on the progress.

### Reply 9:
Keep us updated, love to hear about new miners and more obscure miners too. Price looks very good, would consider buying one if things look smooth. Glad to hear you guys at Pangolin actually gave out a review sample instead of just posting a buy link like most vaporware companies.

### Reply 10:
Hello Guys,We will also invite philipma1957 for evaluating our products.

### Reply 11:
Thank you I just got a pm.I will send you my address in moment or two. I would like to read the thread.Read the thread. Lots of good names here.I will review it.I did a few videos on youtube for other gear.I would be happy to add yours.On this site and on youtube.This is the youtube it shows how to build a soundproof setup to mine with an avalon<link> will put this miner in the same sound proof tunnel and discuss pros and cons of it.Plus post a thread here.

### Reply 12:
This is great! Thank you Phil for joining, two reviews are better than one.I just got today the tracking number for DHL, so it should be about a week and I have the miner.

### Reply 13:
@ Pangolinminer,Some of us are interested in your GPU miner too:<link> motherboard does it use?Could you send one for review by philipma1957 or HaggsFin or other trusted members?

### Reply 14:
I did do a review on the original panda miner about jan of 2018.I am now reviewing some empty motherboards .I would not mind reviewing your complete solution for gpu mining.

### Reply 15:
Sounds like double fun Would be great.

### Reply 16:
Hopefully he replies to my pm.

### Reply 17:
Got a hunch they will. Since you also mine alts, query: Ballpark opinion on what their scrypt miner specs sound like vs DIY?Time traveling again are ya?

### Reply 18:
I sent their sales team an email and have been waiting to hear back. I can attest to the quality of the M1 miner which seems to be the same miner as the M3. The efficiency is worse than an S9 but I suspect with availability and this lower price that youd still do just fine with an M3.

### Reply 19:
Considering the fact that the Pangolin miners are based off of the older 28nm process I'm actually quite surprised there's still room for improvement in ASICs. Of course efficiency's going to be lower than the S9 on an older node but if these guys deliver by chance it's going to be pretty nice. Hope 14nm is great from these guys too if their 28nm miner is actually legit.

### Reply 20:
My review unit has already arrived in Helsinki, it should not be too long before I have my hands on it.

### Reply 21:
Hello, Sorry for the delay, can you send us an email to <truncated> ?We will process your sample unit ASAP

##<rest of thread truncated>
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    ""hardware_name"": ""Whatsminer 11.5 Th/s miner with power supply"",
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    ""hardware_name"": ""GPU miner"",
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    ""hardware_name"": ""original panda miner"",
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    ""hardware_name"": ""M1 miner"",
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14322,"Date: 2011-06
Topic: Hiring Mining Power
### Original post:
Would you pay someone to mine shares for you? Suppose you had a non-standard transaction that you wanted to get approved, but no mining pools are accepting it. Or suppose you had a ton of transactions and want to avoid the fees? Imagine a reverse mining pool, you pay the pool a fixed price / share to find hashes for you. You get 100% of the block when it is generated. With this setup you remove power from the 'miners' to determine what gets included in a block.So how would you prefer to hire mining power?

",[]
10933,"Date: 2021-03
Topic: Antminer S9,S9j,S9i / S9K,S9SE Rackmount Shelf
### Original post:
We are proud to share with the public our custom Antminer S9,S9j,S9i / S9K,S9SE rackmount enclosure. These 7U/8U shelves are designed to house 3 Antminer bitcoin miners with bitmain AW3++ power supplies. This allows those running in traditional datacenter environments to effectively host Antminers while maintaining hot / cold air containment.We are currently running a clearance on our in stock quantities! After these sell out we will only be offering quantities of 50+ so get these while you can.Please place any orders through our site here:7U shelf for S9,S9j,S9i7U shelf for S9K,S9SEThese shelves will also work for other bitmain miners such as L3,D3 etc, as well as similar units like dragonmint T1s.Questions? <truncated>

### Reply 1:
HelloCan I order the shelf somewhere US/Canada?

","[
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9K"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9SE"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitmain AW3++ power supplies"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""D3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""dragonmint T1"",
    ""hardware_is_owned"": false
  }
]"
9766,"Date: 2016-04
Topic: BITMAIN AntRouter R1: 1st wireless networking device with uᴉoɔʇᴉq mining chip
### Original post:
Hi,when i will OC (overclock) - what is the best except external cooling?voltage?? any to do?

### Reply 1:
Are you looking for the highest frequency you can run without external cooling? I think it's somewhere around 200, but I get many hardware errors starting about 150 so I've never gone that high.

### Reply 2:
thanks.no i will not looking for the highest. i will use the r1 higher as standard but not with a external fan.so i will test it with 112.5

","[
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    ""hardware_name"": ""BITMAIN AntRouter R1"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""external cooling"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""external fan"",
    ""hardware_is_owned"": false
  }
]"
13373,"Date: 2015-03
Topic: BFGMiner Source Help
### Original post:
I want to write a program that can use my Saphire asic miner to generate a hash. I just need to pass in a value and get the value returned. I need some help with my class project (C#), the idea is to write a C# program that connects to a hardware device. My questions below are listed starting at the minimum and moving to more helpful.1) Anyone what/where command codes are for a Saphire miner? By sapphire I mean the USB device that generates 333 Mh/s.2) Anyone know which source file this correlates to? I see no sapphire driver.3) Any guidance on which source file / function that actually does the work of passing in a parameter and handling the return value?I did try on my own but the main function is in Sample and doesn't seem to do what I expected (possibly misunderstood ). I couldn't find the work function. And I couldn't tell which driver I needed to look at.Thanks for any answer.

### Reply 1:
The relevant files are here:<link> being said, ASICs including the Erupter are not made to provide hashes of random data. They take a very specific input describing work to be done and generally return a nonce that satisfies that piece of work.It's all very specific to blockchain mining. See the following for more info:<link>

### Reply 2:
I'm on beginning level but this topic help me a lot, thanks.

","[
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    ""hardware_name"": ""Saphire asic miner"",
    ""hardware_is_owned"": true
  },
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    ""hardware_is_owned"": false,
    ""hardware_name"": ""Erupter""
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]"
10069,"Date: 2016-11
Topic: Optiona is allways good. 16nm ASIC, 100w/THS 0.1J/GH on wall. MAX31THS/miner
### Original post:
working sample is ready.jump to the start of this thread.working sample video:<link>

### Reply 1:
ftfy: <link>

### Reply 2:
When do they go on sale? I'd consider buying a few after philipma reviews them. Really hope this turns out to be legit

","[
  {
    ""hardware_name"": ""16nm ASIC"",
    ""hardware_is_owned"": false
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]"
15757,"Date: 2016-05
Topic: How do you calculate current network hashrate
### Original post:
I see different charts:<link> is the current network hashrate calculated?You probably need to take an average from the latest n blocks?Nevermind. Found it <link>

",[]
22417,"Date: 2018-02
Topic: Some PDU Part#'s
### Original post:
I know a lot of folks pick up PDUs off eBay, so I thought I'd post some search fodder for the new folks. Surely someone will search before posting right? Yeah I'm optimistic Anyway what got me looking around is that most PDUs are not very well suited for ASIC miners. You might buy a 30A PDU, but look at it carefully. Most of the time each bank of outlets is protected by a 15A breaker. So 2 S9s will put you over the 80% derating recommendation and pretty close to the cap, I haven't measure S9 inrush. Use something like a Pangolin M3 and you're down to 1 miner per outlet bank. Now I am sure there's folks running these 15A/bank PDUs with no issues, but it's too close for me. By doing some digging I found APC part # AP6031A (Dell branded Dell AP6031), which seems perfect for ASICs. 30A total (24A derated), 4 outlets @ 12A each derated. The form factor of this PDU is also a lot smaller so you don't have giant PDUs with a bunch of wasted outlets. Thought I'd share.

### Reply 1:
I got some by server technology, they're great. I can log in and toggle plugs, monitor power. Paid about $60 from some surplus place, very happy with the purchase

### Reply 2:
Wow, very nice to get switched outlets for $60.00! Have any part numbers?

### Reply 3:
Thanks for this Raymond, I have been thinking the exact same thing - most PDU's aren't meant for ASICs.I'm also interested in learning the part # for the above mentioned switched PDU's. Speaking of switched PDU's, have you encountered any really good deals on switched PDU's that are suitible for ASICs? Cheers

### Reply 4:
I have not found any ""affordable"" switched PDUs yet. Most command a premium, I am still looking though. I work with an APC and a Vertiv reseller I am waiting to hear back on what they can find. I need to ping them again.

### Reply 5:
At my previous location I used a pair of Tripp-Lite 30amp power strips to run (8) S9s - (4) per strip, (2) per side of each strip. Over about a year, I popped one of the 20amp internal breakers once. Never had any problems on the panel breaker. These were, of course, maxed.

### Reply 6:
Sounds good. If you find good prices on PDU's that are suitable for 30A +, keep me posted, I may be in the market for a significant amount (especially if we can find low-cost switched PDU's).

### Reply 7:
The ones I got wereServer Technologies Sentry Switched Cabinet Distribution Unit CDU CW-8H2-L30M Server Technologies Sentry Switched Cabinet Distribution Unit CDU CX-8H2-L30MThe CW is the master, and the CX uses a 6-pin telephone cord to connect to the master. So 12 switched plugs on two CDU (two 30A circuits) that are controlled from the one web interface.

### Reply 8:
Cool these look like good units. I just asked for a quote.Mind if I ask what you paid for them?Also - just a general question for PDUs: My power source is three phase but I will be running the PDU's off single phase L-L of 230 V. For a PDU with input voltage requirement of 230V, does it matter if it is L-L voltage or L-N?Thanks

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    ""hardware_name"": ""server technology PDUs"",
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    ""hardware_name"": ""Tripp-Lite 30amp power strips"",
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    ""hardware_name"": ""Server Technologies Sentry Switched Cabinet Distribution Unit CDU CX-8H2-L30M"",
    ""hardware_is_owned"": true
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]"
15909,"Date: 2017-04
Topic: Bitmain already feels the heat, selling T9 with psu.
### Original post:
this belongs in sha 256 mining

### Reply 1:
Today received email that Jihan will give away psu when buyin T9 miner. Price is acceptable but i dont see he point support spoiled kid with toys.I hope whole community will do the same.There is one BUT. Maybe jihan and gang have new toys and they wanna get rid of okd obsolette units?Maybe bitmain prepparing for somethig big and need to make sure old kit is gone?Please do not buy bitmain kit. Better off buy bitcoins and forget for year to get decent profit. Fools game is over for me as home miner. Monopoly of this little china king should be finished for better future of bitcoins.

","[
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    ""hardware_name"": ""T9 miner"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""psu"",
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  }
]"
20412,"Date: 2015-05
Topic: Antminer or PSU issue?
### Original post:
I just purchased an ANTMINER S3 and I am attempting to get it running.. i have a 400W PSU for each antminer S3. I am having issues with the PSU just powering off... I am assuming that it is because it is being overloaded... but I am not sure... Any suggestions, and updates on a better PSU?

### Reply 1:
That's likely what's happening. The S3 at standard clock needs 340W from the wall on a decent-rated PSU. Your 400W PSU probably can't push enough power to the miner. How many S3s do you have? I run 3 of them on a single EVGA 1300 G2 and that PSU is rock solid. Can't say enough good things about it.

### Reply 2:
Have you tried to get it running at a lower frequency? This sounds like not enough power possibly.Also can you tell us model of PSU you are using? Not all PSU's are equal.

### Reply 3:
underclock them down to freq 150 see if they run .then run them at freq 175 see if they run.next run them at freq 200 see if they run.if your psu can run them at 200 run them at 200if your psu can run them at 175 run them at 175if you cant run them at those freq's but freq 150 works then buy a good psu.I would argue a psu purchase if you can run at 175 or 200 is not worth it .

### Reply 4:
One thing I wonder is with a 400 watt psu if it has one pci-e cable possibly split. A lot do some cheap stuff in that level. I hope he tells us psu model.

### Reply 5:
here is a seller quakefiend420that would be $92 + shipping for one kit, should be around $20 for a total of $112.he gave me that quote for a platinum 1100 watt psu.<link> will run 2 s-3's maxed with ease.and I own one from this seller<link> nice gear I am running an s-3 on it as I type.

### Reply 6:
Hey all! Thanks for the information. It was a really cheap PSU... Insignia NS-PCW4050 I have 1 for each S3 miner I have... unfortunately they trip off... I am in the process of changing frequency speed... I did purchase a new 1000 PSU from Amazon that looks like it has some pretty good review... I got a Rosewill RBR1000-M 1000-Watt Bronze Series 80. It arrives tomorrow, it seems pretty nice. There were good reviews on it.

### Reply 7:
PSU's are honestly a investment you will use them for multiple generations if you pick a nice one. Some of the low quality ones are even scary to mine with. The worst use cheap guage wire to split pci-e cables.If you split a pci-e with cheap guage wire.... and use on a miner you get melting possibly flames.And if you get a nice psu keep the box and all you can sell it if ever comes to that. PSU's not a whole lot really changes on. A nice PSU this year will be a nice PSU next year. Only advancement I have seen is some more that can hook up to a computer and give some readings. But that in no way is needed.

### Reply 8:
Thank you for the information... I will be very happy with the Rosewill I think. From what I read on it, it is a very good PSU...

### Reply 9:
what price did it cost?it is a 1 rail 83 amp psu3 x 6-Pin, 3 x 6+2-Pin it has a lot of pcie connectorslooks okay if it was cheap price It is a bronze psu that means it is a bit power hungry.It does look like it can run 2 s-3's. I figure 1 s-3 at 350 to 450 wattsdepends on the clock

### Reply 10:
The PSU you purchased stated it was rated ""Bronze"", meaning that it is lower quality than of a ""Gold"" PSU. When mining, especially 24/7 you will most likely need a ""Gold"" rated PSU, the cheaper ones tend to overheat, not be able to keep up with the constant demand of power, and puts you at a small risk of a fire.

### Reply 11:
The ratings on a PSU are just about efficiency of conversion. The better the rating (bronze, silver, gold, platinum), the more efficient the PSU is in converting the AC power from the wall to DC power to provide to your gear. You can have a gold rated PSU with crap components, just as you can have a bronze rated PSU with stellar ones.Rosewill PSUs are newegg's house brand and are generally pretty decent.

### Reply 12:
This may or may not be true. But Bronze is more about percent of energy wasted. Not whether it will run 24/7/365This is more accurate.I do wish op did not buy this unit not because it will burn or melt (which it may as I do not know the quality of the pcie wires)The real problem is this will burn about 50 watts more then a good platinum psu<link> I have paid under 100 for these from newegg.Also there are sellers of platinum server psu's on this site.I fear the op will spend 1 kwatt a day extra on power that is :3 bucks a month at 10 cent power 6 bucks a month at 20 cent power.

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    ""hardware_name"": ""400W PSU"",
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  {
    ""hardware_name"": ""EVGA 1300 G2"",
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    ""hardware_name"": ""platinum 1100 watt psu"",
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    ""hardware_name"": ""Insignia NS-PCW4050"",
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    ""hardware_name"": ""Gold PSU"",
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    ""hardware_name"": ""platinum PSU"",
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    ""hardware_name"": ""platinum server psu"",
    ""hardware_is_owned"": false
  }
]"
8790,"Date: 2015-01
Topic: 【Video视频】：BitCrane T-720 of 7.2 TH/S（中文字幕）全球最高算力比特币挖矿机比特臂视'
### Original post:
not being good at chinese.Whats the w/ghs | ghs/j of these boxes?Edit: Seems its 4600w for - X - Is this in green mode, or in turbo mode?Edit2: found an English button on the website. 7800w in turbo mode :/

### Reply 1:
This miner is outdated, like a half a year ago wasButterfly Labs BFL BitForce 500 GH/s Mini Rig<link> lots of USB cables and USB hubs, like this T-720Powerful miner ?My KNC Neptune is produced in October. Requires 2,55kW (only 2 PSU) and mined 4TH/s (6 modules)It takes several times less space , and is still outdated.You need to build a time machine to sell this T-720 ""Powerful miner""

### Reply 2:
Too bad about the efficiency, it does look like an excellent design.

### Reply 3:
Well the timing of this couldn't have been worse!What chip is this using that has such terrible efficiency?

### Reply 4:
Its been out for months and months and months already, this is just a video post.

### Reply 5:
These contraptions were bulky, inefficient & expensive when they came out ages ago - so now they're old, bulky, inefficient & expensive <truncated>

### Reply 6:
It's a mine of the beholder.

### Reply 7:
it's pretty ... but just on the front. the design itself s*** with all those cables hanging around. with only a small portion taken on the front, it is also a space wasterwhy would you post this video? willing to sell some or?

### Reply 8:
I believe its meant to be placed in DC racks / rack mountable, there would be no need for it to look good on the back / sides while in a rack.

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    ""hardware_name"": ""BitCrane T-720"",
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    ""hardware_name"": ""Butterfly Labs BFL BitForce 500 GH/s Mini Rig"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""KNC Neptune"",
    ""hardware_is_owned"": true
  }
]"
16513,"Date: 2023-05
Topic: To what extent can Artificial intelligence (AI) Enhance BTC mining. ?
### Original post:
Have been making researches lately on the impact of Artificial intelligence on bitcoin mining and have not really gotten the full knowledge and understanding about it, so I thought by asking it here I will gain useful knowledge and understanding. Apart from the fact that it makes complex trading more efficient and also helps in risk management, I really want to know more about it.

### Reply 1:
Bitcoin mining is affected by the number of ASICs that mine this coin. The complexity of Bitcoin mining, because the number of ASICs is constantly increasing. Artificial intelligence cannot mine bitcoins and influence mining. Over the past year, hashrate and difficulty have increased by more than 1.5 times.

### Reply 2:
As Artificial intelligence helps and give you trading information, it can helps and give you information about bitcoin mining. But I do not know how accurate the information they can give.The best information AI should give you should be how CPU was first used for bitcoin mining. The mining difficulty increased and people started to use machines that can provide more computational power which are graphics card (GPU). But now we are in the period that those machines can no longer mine bitcoin anymore in a way that would be profitable for miners. If you want to mine bitcoin now, you will need ASIC, which I think AI bots like Chap GPT should provide such information. ASICs consume electricity and you may need machines that would also be cooling it or providing ventilation to drive heat away.Al should also be able to tell you how people can try to scam you. Like those cloud miners that are scamming people that join and pay them on their sites to mine for them.

### Reply 3:
ASIC miners are programmed to mine a specific number of digital currency as it can mine over 6.25 coins in 10 mins but I think it was programmed for the sole aim of mining, no risk management and trading strategy, as a miner you need all this for good and profitable mining, Just mining without managing the risk involved is not cool do I think Artificial intelligence still have a major role to play in mining. This is getting Interesting.

### Reply 4:
Enhance Bitcoin mining how?In terms of increasing the chances, a miner can find a new block? If that's what you are pushing at, then the answer is no. Finding the next block is purely bast on chance. It's like asking if an AI can help increase the chances of you winning a lottery.

### Reply 5:
I'll stir the pot a bit here and say that one could ""in theory"" use AI to develop mining code and further utilize it to assist in identifying potential security <truncated>

### Reply 6:
If the AI is perfectly developed I think it would ""Enhance"" BTC mining to some extent, but not quite in the way you think, it's more so the other way around, it would help the ignorant lazy people who buy mining gears without understanding a thing or two about the economics of BTC mining, and honestly, mining is rather complicated when looked at from the outside.Someone would google or find a video on youtube that says, how I earn $1000 every month using ABC asic miner, someone who has no clue and can't or doesn't do the math to fit his power rate and buying price, would jump in and buy the same gears thinking they would be making the same amount of money, and of course, they won't, they would help raise the difficulty and make life harder for other rational miners, and then leave, but they will keep coming.You might think that there aren't many people like that, but I can tell you with complete certainty that there are many, you can read the stories in this section or on the other various sources, and the amount of clueless people who jump into mine bitcoin without the slightest chance of making any profit is pretty high. So that's one way AI could affect mining as a business sinc<rest of post truncated>

### Reply 7:
Yes I think so too, and it will enhance Mining perfectly well, in the sense that there will be no stipulated amount of digital currency mined, and it will make mining easy for miners as it will also take care of the risk management, Everything is just improvement and me personally am looking forward to the improvement of Miner with AI algorithms, the first may not be as good as we want but improvements and reconfiguration Wil make sure its more efficient and effective.

### Reply 8:
Artificial intelligence (AI) can have a significant impact on bitcoin mining in several ways. Here are some examples:Predictive analytics: AI algorithms can analyze historical data and predict future bitcoin price trends, helping miners make more informed decisions about when to buy or sell bitcoins.Mining optimization: AI can help optimize mining operations by automatically adjusting the mining hardware's parameters, such as power consumption and cooling, to maximize efficiency and profitability.Fraud detection: <rest of thread truncated>
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    ""hardware_name"": ""ASIC"",
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    ""hardware_name"": ""CPU"",
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    ""hardware_name"": ""GPU"",
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    ""hardware_name"": ""ASIC miners"",
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    ""hardware_name"": ""ABC asic miner"",
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9950,"Date: 2016-08
Topic: i find this dealer right now... But is legit???
### Original post:
<link> one had experience with this dealer??it seems for EU buyers...

### Reply 1:
- The domain has been created in 2014- Valid KvK number- Didn't hide their WHOIS information - Has an address that looks real- Company address that looks realI have no idea how they prices are as I'm not into mining, but it looks decent, I suppose. That's all I can say about it.Other topics about this website:<link> (Sjoerd is said to be the owner of the website)Disclaimer: I will not take any blame if this website turns out to be a scam / rip-off / etc.

### Reply 2:
Mitche,thank you... i had thinked it was a new site...but now... i understand it is not so!grazie ancora!

",[]
15687,"Date: 2016-01
Topic: New Mining Calculator Featuring Multiple Currencies and Responsive Profit Chart
### Original post:
Made with love Comments or suggestions greatly appreciated!<link> code:<link>

### Reply 1:
I could never find a simple calculator, Thank you.

### Reply 2:
It's nice - but I find the BitcoinWisdom mining calculator much better still. Yours only calculates your earnings after the next difficulty increase. In reality, a miner needs to be able to model their returns after each difficulty increase. Without taking that into consideration, a miner will have an over optimistic expectation of return. Also - you should factor in the initial cost of hardware as well. With a couple more updates, I think this would be great!

### Reply 3:
The profit chart does actually factor in a changing difficulty over time, but the output tables don't. I could see how that would be confusing. I think I'll change the second table to account for changing difficulty. Thanks for a feedback, that's super helpful!

### Reply 4:
that difficulty estimate on bitcoinwisdom is a bit exaggerated, they are assuming the worst scenario of 20% increase every two weeks, which is not really the case

### Reply 5:
Got it - I can see that now. Yes - I personally like the way I can see the profit values per month or grouped by difficulty jump, as on the Bitcoin Wisdom Calculator. An option to export that out data out to a spreadsheet would also be quite killer

### Reply 6:
I agree with the sentnence in bold, but I don't think that Difficulty Increase were not taking into account there. I mean I don't think that more complex calculation will change the picture to such an extent that we should worry about it. Overall good job OP! Thank you for the simple and in the same time pretty accurate Calculator!

### Reply 7:
Nice one..It's pretty easy to use and great one..A Simple mining calculator it is..I don't see any major problem that need to be updated..At lowet level or normal calculations it can be used..Otherwise for more bitcoinwisdom mining calculator id there

### Reply 8:
Too easy mate! Done. Smarter profitability tables that account for future difficulty increases, and exportable data are on the list.Thanks guys!

### Reply 9:
Great calculator! I like it a lot! Only thing I can think of is maybe a chart for each difficulty change. This would help people better judge their ROI.

### Reply 10:
Nice..!

### Reply 11:
Wow this suberb. My mother could use it.

### Reply 12:
Well done, works great. Bookmarked!It provides further proof that it's not economically profitable to mine bitcoin in the US due to the network difficulty and power costs per kWH. However, that's not the fault of the calculator

### Reply 13:
Probably one of the best/easiest clalculators out there. I have a few suggestions though:1) Maybe add the approximate halving date in there around mid July (very important for the last half of the year in mining).2) Include hardware costs into the calculations.Also, do you happen to work in the Hydro generation field? I may work for a company who's contracted with you in the past (judging from your BCHydro username).Cheers.

### Reply 14:
Good ideas, both wouldn't be too hard to implement. I'll add hardware costs into the calculation ASAPNo affiliation to BC Hydro, the government owned monopoly electricity company in BC, Canada. I just live in BC, and I turn BC hydroelectric power into Bitcoins so I decided it would be a decent username Thanks everyone for the comments!

### Reply 15:
Thanks man, nice calculator

### Reply 16:
Wonderful Mining profitability calculator, easy to use and has all necessary inputs needed to calculate the profits daily, monthly..etc. I really liked how the graphs indicated profitability over a period of time and the ability to input power cost and pool fees.

",[]
23968,"Date: 2022-06
Topic: bitcoin miner
### Original post:
Guys, please, whoever has a Bitcoin mining device, can he explain the percentage of profit and some information that can help us and how much it costs, for example, and how much electricity it takes

### Reply 1:
Cost, lots, electricity, lots.Or try google.

### Reply 2:
If you search it in Google the result is almost altcoin mining.If you are looking for a list of ASIC miners with electricity costs and daily earnings you can check this link below.- <link> the unit price go directly to the manufacturer or click the logo of the unit it redirects you to the distributor or manufacturer.

### Reply 3:
before you know from electricity, power and money back. have you measured the price of hardware today? try to imagine when bitcoin one day reaches $100,000 it's not too early? you intend well enough to participate in mining, don't you want to try mining with what you have, or do something easy to get bitcoin? if you've started it, it's not an offer. then do it

### Reply 4:
It can vary a lot, from losing a lot of money, to earning some. Also it depends on many factors, like, what are you planning to do with the mined bitcoins, how much is your electricity, specific tax rebates you can get in your country, etc.You need to see the specifications of the device. Check out how much power it uses (Watts) and what's the hashing rate (TH/s). Then check how much your electricity costs to run that device, and you'll see exactly how much it will cost you to power it and you can get an online calculator to estimate how much bitcoin you'll get for that hashing rate.There are so many factors that it's really impossible to answer your question.I can guarantee one thing though, it will be hot and loud.

### Reply 5:
Here's the problem with this line of thinking: It doesn't take into account that based on economics, and the limited supply of ASICs on the market, that the average price of an ASIC miner will be inflated with respect to price pumps//rallies/bull runs.A moden miner could very well sell at the price of half or 2/5's of the BTC price in such market conditions.

### Reply 6:
I run various different makes, types and models of miners - here are some examples of the miners I use (earnings quoted are accurate today only - research 'bitcoin difficulty' to understand how the earnings change over time):Bitmain Antminer S19J 100T. Power Consumption: 2950wkWh: 2.95kWh per day: 70.8Bitcoin earned per day: 0.00042Whatsminer M30S+ 82T. Power Consumption: 3700wkWh: 3.7kWh per day: 88.8Bitcoin earned per day: 0.000353Bitmain Antminer S17e 60T Power Consumption: 2700wkWh: 2.7kWh per day: 63.8Bitcoin earned per day: 0.000252You can get an idea of miner prices here: <link> do a very basic calculation of how much you will profit or lose you need to take into account your energy cost per kWh, the power consumption of the miner and bitcoin price.a = Energy cost per kWhb = Power consumption of the miner (kWh per day)c = Bitcoin priced = Bitcoin earned per day? = Profit or loss amount(c x d) - (a x b) = ?Lets say you power cost is $0.10 per kWh and you're running an S17e 60T:a = 0.10b = 63.8c = $22,000d = 0.000252c x d = $5.54 (Bitcoin earned in a day)a x b = $6.38 (Cost to run the miner per day)Result = LOSS of $0.84 per day.In addition to this basic calculation, you'll al<rest of post truncated>

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    ""hardware_name"": ""Bitmain Antminer S19J 100T"",
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    ""hardware_name"": ""Whatsminer M30S+ 82T"",
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23710,"Date: 2021-09
Topic: S17+ ""read temp sensor failed""
### Original post:
Hey guysSo, one of my S17+'s started having this error today, one of the hashboards disappeared and the fans slowed down.Here's the log:Code:2021-09-28 18:41:44 <truncated> create thread2021-09-28 18:41:44 <truncated> chain = 255, freq = 555, is_higher_voltage = true2021-09-28 18:41:44 <truncated> Set to voltage raw 2090, step by step.2021-09-28 18:41:45 <truncated> retry time: 02021-09-28 18:41:46 <truncated> chain = 0, voltage = 21.0000002021-09-28 18:41:48 <truncated> chain = 1, voltage = 20.9407312021-09-28 18:41:49 <truncated> chain = 2, voltage = 21.0038122021-09-28 18:41:49 <truncated> average_voltage = 20.9815142021-09-28 18:41:49 <truncated> target_vol = 20.90, actural_vol = 20.98, check voltage passed.2021-09-28 18:43:20 <truncated> ERROR: chain 2 get <truncated> 18, require 65, failed times 1: ooooo ooooo ooooo oooxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx2021-09-28 18:43:22 <truncated> chain 2 can't get enough hashrate reg val for 0 times.2021-09-28 18:43:22 <truncated> ERROR: chain 2 get <truncated> 18, require 65, failed times 1: ooooo ooooo ooooo oooxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxx2021-09-28 18:43:23 <truncated> read temp sensor <rest of post truncated>

### Reply 1:
This is caused by physical damage, there isn't much you can do to fix it if you don't have the tools and the skills needed.Notice while the kernel log reports an issue with the temp sensor, this problem is rarely caused by an actual faulty temp sensor, it's usually caused by a bad chip on the hash board the reports the error, in your case chain 2.Sometimes, the PSU can be the cause, to test this, unplug the other two hash boards and see if this one works, if it does not, then it's not a PSU-related issue and you will have to unplug that hash board and mine with 2 of them.By the way, this is a very common issue with all the 17 series, at this point probably the vast majority of these miners have lost at least one hash board.

### Reply 2:
thank you for the quick reply. I've searched and saw some other people with this error that apparently fixed it with another FW or reflashing the FW? Or do my logs change from those?How do I spot the physical hashboard with chain 2?Thanks!

### Reply 3:
You have not posted the other logs so I can't tell, however, very rarely the temp sensor error is actually a temp sensor error, in that case, some custom firmware will work as long as 2 out of 4 sensors are working unlike the stock firmware which requires 4 out of 4, but this isn't usual, however, you lose nothing if you try another firmware like Vnish or BO.Follow the ribbon cable end at the control board, there are some tiny but readable labels of Chain numbers.

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    ""hardware_name"": ""fans"",
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    ""hardware_name"": ""PSU"",
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13722,"Date: 2021-10
Topic: Braiins OS+ 21.09 release: new features and beta for S19, T19 & S19 Pro
### Original post:
Braiins OS+ 21.09 release: new features and beta for S19, T19 & S19 ProBraiins | pool, firmware & protocolMajor release that overhauls the web interface, adds languages and featuresEarly access for beta testers of S19, T19 & S19 Pro - see the dedicated section belowNew features for all models:[feature] new web interface, with responsive design (mobile ready), dark mode and multi-languages support (ES, RU, FA, ZH)[feature] firmware running from SD card now support upgrade and auto-upgrade (same as firmware running from internal NAND memory)[feature] firmware automatically pauses mining if there are no online pools in your settings, minimizing the power consumption and will automatically start mining once at least one pool comes online[x17 specific feature] Improved Model Detection functionality, to cover situations where all 3 hashboards have invalid EEPROMs from a different model. Scenario: you have a second hand S17 and the previous owner has rewritten the hashboard EEPROMs with T17e profilesKnown Issues:Kaspersky Antivirus may block the web GUI[S9] Wrong DPS default minimum power limit value = 100 W[x19] Sometimes invalid Power usage data[x19] Inconsistency in data shown in GUI D<rest of post truncated>

### Reply 1:
What type of performance increases numbers being seen in the 19's seen?

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    ""hardware_name"": ""T19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 Pro"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""T17e"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  }
]"
23075,"Date: 2019-09
Topic: R606 Newpac 2Pac - Instances
### Original post:
Hi AllNeed some help please. I have x2 R606, x4 Newpacs and x12 2Pacs. For some reason, theyre not compatible when using 4.11.1 (tried all the versions) for the BM1387s and 4.10.0 for the 2Pacs. I get 2Pac USB write errors when using all on 4.11.1.Im using a DPS1200W PSU with PCIe breakout (not breaking a sweat), x2 GS hubs, Win7 and Lindy USB cables. They run perfectly on their own but Id like to see <truncated> and BTCaddress.2Pacx12 on the solo ck pool report.Do I have to run x2 Win laptops completely separate; one hooked up for the BM1387s and one for the BM1384s? It sounds a bit heavy going so any help on why Im getting usb initialisation errors would be helpful. Ive trawled through the pages and it seems my PSU, GS hubs and WiFi are fine.BAT is cgminer.exe -o <truncated> -u username -p x gekko-r606-freq 575 gecko-newpac-freq 400 gecko-2Pac-freq 225 suggest-diff 512 widescreenR606 set to middle LED only. What have I got setup incorrect?Thanks

### Reply 1:
Have you looked through the existing support thread for this hardware? Odds are you question is covered in the 1st couple pages. If not -that is where you should post your problem.

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  },
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    ""hardware_name"": ""2Pac"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""DPS1200W PSU"",
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    ""hardware_name"": ""PCIe breakout"",
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    ""hardware_name"": ""GS hubs"",
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    ""hardware_name"": ""Win7"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Lindy USB cables"",
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]"
16864,"Date: 2011-07
Topic: how long does a transaction take to post - not receiving payments :/
### Original post:
Simple question. So I have the OSX btc client running, and it's downloaded up to block 138846. I initiated a payout from Deepbit at 11am PST today and it still has not posted 3 hours later. I tried restarting the btc client as well. When I click the payment details button at deepbit it says ""No such transaction"" and when I look up my new wallet hash at BlockExplorer it says the wallet ID has been ""Never used on the network"". This stuff all worked rather quickly when I was using mybitcoin for a wallet, but moving to a on-computer wallet seems to be a different experience.How long should I expect this to take?

### Reply 1:
The transaction has probably been sent, but the reason you're not seeing it would probably mean that it has yet to be included in a block, and therefore can't be found through the payment information from blockexplorer.com. It also takes blockexplorer some time to update its database.Mybitcoin listens to the network and shows bitcoins as received in the account before they are in blocks. You can locate pending transactions yourself by searching for your address here: <link> it shouldn't take long for transactions to show up. If your client is online when the transaction is sent you'll often see it as ""0/unconfirmed"" after a few seconds (because the client listens for transactions that are broadcast over the network as well, but it may miss them sometimes), and it should be included in a block and getting confirmations soon after that the actual time depends on the priority of the transaction and how busy the network is, but normally somewhere between 20 minutes and an hour for the average transaction.But, there are exceptions, and sometimes you may be unlucky and have to wait a bit longer before the transaction is processed.

### Reply 2:
Yep, it's rather common for it to show up in your client after a few seconds.The rule of thumb is to not worry about it until 24 hours after it was sent. If it doesn't have at least 1 confirmation then, you're allowed to panic.

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21359,"Date: 2017-04
Topic: Setup Question
### Original post:
I have a SpondooliesTech SP20 that I'm wanting to use and I was wondering if an HP 437508-B21 1200w redundant server power supply would work for it? I can't find anywhere to tell me if it supports PCIE Express. This is the page I'm looking at: <link> for any help.

### Reply 1:
The machine itself pulls 1200w at the wall so you want a PSU that is more like 1500-1600w for longevity.Also be aware that the efficiency on the spondoolies is pretty bad compared to newer hardware. Unless you have free power you will lose money running it.

### Reply 2:
you could probably get away with it if you underclock the miner (usually the lower the clock the more effiecitn the miner runs and ofcourse cooler and quiter the trade off is a lower mining speed alot of people do this to squeeze as much ROI as they can out of the miners

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    ""hardware_name"": ""HP 437508-B21 1200w redundant server power supply"",
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20591,"Date: 2015-08
Topic: pyminer not running
### Original post:
When I load pyminer on my laptop and raspberry it returns many errors. Pyminer was a getwork program, coded in python, by one of the founders of bitcoins. <truncated>

### Reply 1:
What are the errors?Do you have bitcoind running on the host? (as the default config file attempts to connect locally to 127.0.0.1)

### Reply 2:
Is bitcoind the program that is installed along with bitcoin core and is that the one that is used for mining?

### Reply 3:
I set the config file to the website of ""<link> (shlush's pool) and the port of 3333. I will try to run the program again, when I find it and copy the errors.

### Reply 4:
This is the first error that is detected {D:\bitcoin\pyminer [master +2 ~0 -0 !]> python pyminer.py config.cfg File ""pyminer.py"", line 31 MAX_NONCE = 1000000L ^SyntaxError: invalid syntax }I ran this in the git shell!It appears to be a type error should i put speach marks around the 1000000L?

### Reply 5:
This error works fine once adding in the speach marks. I also realised that I am running 3.4 and the program was coded for 2.7 so am converting it manually now!

### Reply 6:
It is now <truncated> [master +2 ~1 -0 !]> python ""pyminer.py"" <truncated> (most recent call last): File ""pyminer.py"", line 8, in <module> import <link> No module named '<link>

### Reply 7:
Why are you trying to run a getwork mining program? Neither bitcoin-qt/core nor any pool support getwork any more so even if you get the program working you won't be able to get it to connect to anything to mine.

### Reply 8:
I thought they did, as one of the programmers and founders of bitcoins created the getwork pyminer. Is there anothe rpyminer I could run that doesn't use getwork?

### Reply 9:
If you just want to see some mining happen on a Pi without investing in hardware then you could download cpuminer<link> (download the source and build your own)Then run it with something likeminerd -a sha256d -o <truncated> -u <truncated> -p x(use your own bitcoin address)

### Reply 10:
Don't I have to install additional libraries there or are these in the makefileIs that the one that is created by Jeff Garzik on github

### Reply 11:
It depends on what libraries you already have and that depends on what image you installed on the SD card.The build process (./configure; make; make install) will tell you what libraries are required.I don't know much about cpuminer as CPU mining is dead, it's a quick way of seeing mining in action (don't expect any returns though...)

### Reply 12:
I used a CPU miner on my android phone and got 11 rejected blocks! I know that android products need gpus or graphical exallerators <truncated> so are there any bitcoin miners for that on android?

### Reply 13:
I'm not sure what you are trying to achieve. If you just want to see mining on a Pi then cpuminer will show you as a demonstration, if you want to actually mine you need to invest in some hardware.

### Reply 14:
May purchase an antminer s5 or s5+ do bitmain deliver to the UK?

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    ""hardware_name"": ""android phone"",
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    ""hardware_name"": ""antminer s5"",
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9057,"Date: 2015-04
Topic: Antminer S3
### Original post:
Hey guys. I recently purchased an Antminer S3.... I am mining with Eligius I was reviewing the shares and I saw I only had 23,xxx shares accepted and over 73,xxx shares discarded... any idea why this is happening?

### Reply 1:
As long as it's disregarded and not rejected you are doing fine. Just keep mining. But if it is shares rejected then you do have a problem, as it's hurting your mining. But everything sounds normal that you mentioned.

### Reply 2:
You may want to lower your setting then see if there is any differences.

### Reply 3:
try to restart the miners sometime they hangs there without doing their job

### Reply 4:
And if you really have a problem with it doing this look at M's antmoniter. It can do it automatically.Each S3 and C1 seem to have a personality of their own. Some are better, and others take more babysitting.

### Reply 5:
Have a look and check on which frequency your S3 is working. Try to lower it a bit. Sometimes you need to play with settings to find best frequency. How many HW errors do you have?

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15658,"Date: 2015-12
Topic: SOLO mining with Spondoolies Tech SP 20 ! Wish me luck
### Original post:
I have decided to try the lottery by mining solo with an SP20 on solo.ckpool.orgYou can watch the stats live here :<link> will keep you updated in case I find a block !If anyone wants to contribute with a little hash to a good cause is welcome ^^

### Reply 1:
I sincerely wish you luck with your solo mining! Since there are not so much topics and updates in the Mining section, your updates will be highly anticipated. Please do them. And GL again!

### Reply 2:
Thanks, much appreciated !

### Reply 3:
What a lad! How much did you pay for the SP20? I have maximum respect for people embarking on solo mining ventures still, I wish you a lot of luck! That's Satoshi's dream <link>

### Reply 4:
Wish you the best of luck !

### Reply 5:
Well the guy who started the ""solo mining with an S3"" topic hit a solo block within like a week or two, so maybe that's the secret to getting the block gods to smile down on you. Good luck! My S3+ is back up in solo lottery mode, we could all use an extra 25 coins in our wallets.

### Reply 6:
Hey guys, are there a store around selling cheap ASIC for ""solo lottery"" mining ? Can you recommend some low power model ? Thanks.

### Reply 7:
I wish you best of luck too. I tried that once with my S3 but no luck, and eventually sold it.

### Reply 8:
Thank you all !The best part about this is that my SP20 runs on free electricity and he long time ROId so I have almost nothing to lose except maybe a few coins that it would have mined in a regular pool

### Reply 9:
I wish you luck! Was nice watching the other thread and seeing it pay off for the guy so hope it works for you too!

### Reply 10:
plus I have 3 times his hash

### Reply 11:
I wish you luck, but in my opinion, you might as well play the powerball. There is so much going on now with mining and all these farms starting up, you are just a blip on the screen now, wait until these farms get up and running. I understand the purpose of mining and I wish all solo ventures luck, but use your power and make a small difference for yourself. Get into a mining pool where you will get something more than what you will get solo. What if you hit the first one then do not hit any more for a year? I highly advise against it.

### Reply 12:
This is my dream . i wish you a lot of luck and i wish you find successiveness block Who knows you may come up to high winning block like this <link>

### Reply 13:
Good luck, I have 2 S5's solo'ing on NiceHash right now, been running for a couple weeks. Best share so far is... 3,071,411,404.57

### Reply 14:
Good luck!!!

### Reply 15:
Still mining here ... no luck yet Thanks everyone again

### Reply 16:
people have hit blocks with alot less hash, so i think you have a decent chance goodluck, do a give away when you do hit one

### Reply 17:
that is exactly my intentionhit and run

### Reply 18:
Good Luck mate! I hope you will hit it soon. Report here about it then, we are all waiting Not for a giveaway of course, but it's nice to see someone has a big luck )

### Reply 19:
Wow, free electricity sure is nice...All these threads about solo mining got me into putting one S3+ unit to draw some tickets at the solo BTC lottery my electricity is not free unfortunately but it's used to heat my office in winter which is kinda the same idea...Good luck mining!Hope you'll strike internet gold soon

### Reply 20:
I am solo mining with a similar hashrate... I was tempted on the spondoolies tech but I felt with my electricity I felt they were too expensive to run! Wishing you good luck!

### Reply 21:
6 days later ... no luck yet

### Reply 22:
Good luck.

### Reply 23:
8 days later .. no block hit, yet !Going forward full speed !

### Reply 24:
I have also recently pointed a few TH to a solo pool for fun.

### Reply 25:
Just wondering how it is going. I was thinking of doing something similar on my own, but I do not have the money to try something large enough to make a difference. I was thinking of buying a miner and getting with a poll, but I am not sure how that will work either.

### Reply 26:
no luck yet

### Reply 27:
Good luck.

### Reply 28:
I send you the best Karma possible my fellow bitcoiner.. Not sure if it's a word but maybe we can add it in the dictionary Bitcoiner: person who mines bitcoin

### Reply 29:
hashing away myself.... : )Jacob

### Reply 30:
What is your best share so far ??

### Reply 31:
Can I ask, how is the electricity free? Running on someone elses electric bill or self generated power?

### Reply 32:
Good like sir

### Reply 33:
oh well, no blocks found, i've sold the miner already for a profit

### Reply 34:
Should have persisted You barely went two weeks Mine are still hashing away Waiting for the hit : )Jacob

### Reply 35:
Got 3.5 TH/s... Sometimes I wonder if I should solo mine... I can be lucky as I can be all the way unlucky....hard risk.

### Reply 36:
wish you luck. i have 6 s3+ thinking<rest of thread truncated>
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10236,"Date: 2017-04
Topic: S9 Hash Card Out Of Warranty Repair From UK
### Original post:
Hi.Lost my first S9 hash card on Saturday. My miner is out of warranty, suppose my luck ran good.Ive had the card out, no missing heat sinks, no burning only showing 9 ASICS.Im in the UK, am I best to go with the repair guys in the USA (Colarado)?I hear there could be a place in the Ukraine but cant find details for them.Dont fancy shipping back to HK due to the horror stories on here.Flamer.

### Reply 1:
Just for some background :-Swapped power suppliesSwapped port on controller cardSwapped cable.Swapped blade into other miner.No red polling light on this blade, other X2 blades show comms.Checked Buck Inverter, not loose.Definately issue with this blade.Dont understand why it shows X9 ASICS (as the blade does not appear to poll from controller)Im pretty confident the blade is dead.Im guessing after removing lots of crap from the heat sinks when I stripped it Sat, its my fault.Im going to strip the other S9's and clean them out later today.

### Reply 2:
BitmainWarranty also has a location in Iceland. You could ask them if that could work out.

### Reply 3:
That sounds better. Struggling to find Contact Details.Ill probably ring the USA later on thisafternoon and find out.Thanks.

### Reply 4:
Sounds like we can service you out of Iceland. That be closer and cheaper than round trip to USA from UK. Do you happen to travel to Iceland by any chance?please email <truncated> with subject ""S9 PCB Repair - Iceland""Also, when you email, please take pictures of the hash PCB close up front and back as well as the Big White Label with barcode) Also, the area near the PCIE power plug front and the back.Thank you!

### Reply 5:
Thanks, Iceland was suggested but I struggled to find any details.Thanks for the tip to get an email to them.

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    ""hardware_name"": ""heat sinks"",
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    ""hardware_name"": ""power supplies"",
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    ""hardware_name"": ""controller card"",
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    ""hardware_name"": ""Buck Inverter"",
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23579,"Date: 2021-05
Topic: S17 Pro Back from Repairs or Disrepair.
### Original post:
The error messages from chain 0 are from not getting any response from the pic microprocessor on the hashboard. This is a pretty basic function, the board only needs power supplied from the control board and a functional pic to get a response. Without the pic, the control board can't turn on the power to the ASIC chips, so there is no chance of getting anything working. Could be that the pic got fried and needs to be replaced.

### Reply 1:
This sometimes happens if the control board and hashboard have a bad connection.Can you try to replace the cable or use the cable from hashboard 3 then test it again. Source: I got from here <link> read the 3rd response from him which is solved by replacing the cable.

### Reply 2:
I agree, Just to assume that if I do successfully replace the PIC the booster circuit and possible regulators would be next and without digging into that as of now, it could be a non-starter and something that just can't be replaced at a hobbyist level. It sounds like you have had a similar experience with this particular repair on one of your boards so I'm super appreciative of your knowledge and help in putting this into perspective. A few questions about potentially gearing up for this. It's been a while since I hot-air soldered. What is good out there now? Are there better alternatives, all in one unit, brand to stick to? I see myself doing this in the future so I'd like to prepared. Do you have any recommendations and what tips have worked best for you specifically for the PIC? Off subject, I am replacing remounting the heat sink on board 3 and ordered a thermal epoxy from Atom Adhesives which are direct replacements for the now discontinued Arctic Silver:AA-DUCT 902 Silver Epoxy Adhesive, Electrically Conductive, Room Temp CuringAA-BOND 2153 Thermally Conductive, Electrically Insulating Compound, 2 Part, ThixtropicI bought both after talking to them directly. Which one of the<rest of post truncated>

### Reply 3:
It looks like I'll be referencing this post for a while so thank you again for this information. Something I know you have experienced with periods of trial and error in your own <truncated> After reading your feedback on the adhesive I just threw it in the fridge for emergencies....down the rabbit hole this goes. I actually took a visit to our electrical dept. today and they are using Pace units for desoldering and surface mount work. They said the PIC work could get tricky because each one of the PIC prongs will have to be carefully soldered. Ordered the PIC chip anyways. With some of their recommendations and a little research, it's between Weller WT's (for the tweezer compatibility) + the Hot Air WTHA1 or Pace ST115 with Sodr-X-Tractor. Looking at these numbers maybe take it to a professional with the right tools locally with hardware provided from your list. I will be picking up one of the test jigs soon for diagnosis purposes and got a pickit just in case by a miracle I come across a working 53 pro board. <link> <link> <link>

### Reply 4:
Well got the S17 Pro back and was able to put eyes on the kernel myself. It went in for repairs limping and came out even worse, so I was hoping there might be a magic (sorcery will do too) recommendation to save this on my own with tools and hardware online. Boards are non-existent so any help is appreciated. Board 3 is off for now because it arrived with a loose heat sink. Board 2 is hashing well. Board 1 is the current issue.1st Diagnosis - Tested all 3 hashboards, All ASICs report correctly with all temp sensors failing.2nd Diagnosis and Final Repair. (Below)Hashboard 1 (Chain 0)-Temp sensors 2 & 4 replaced.Reflowed ChipsBoost circuit failed board is unrepairable.Kernel <truncated> 03:37:27] INFO: Power ON[2021/02/21 03:37:29] INFO: Starting FPGA queue[2021/02/21 03:37:29] INFO: Initializing hash boards[2021/02/21 03:37:29] INFO: chain[1] - <truncated> 03:37:29] INFO: chain[0] - <truncated> 03:37:33] WARN: chain[0] - Failed to reset pic (attempt = 1), resp: 0x01 0x01[2021/02/21 03:37:35] WARN: chain[0] - Failed to reset pic (attempt = 2), resp: 0x9a 0x9a[2021/02/21 03:37:37] WARN: chain[0] - Failed to reset pic (attempt = 3), resp: 0x9a 0x9a[2021/02/21 03:37:38] WARN: chain[0] <rest of post truncated>

### Reply 5:
BitMaxz, definitely the same errors. So I detached the board 1 cable from the hashboard and plugged the cable that usually runs hashboard 3 into hasboard 1. I didn't switch controller board cable positions from 3 to 1, just plugged 3 into hashboard 1. Same <truncated> 20:10:01] INFO: Power ON[2021/02/24 20:10:03] INFO: Starting FPGA queue[2021/02/24 20:10:03] INFO: Initializing hash boards[2021/02/24 20:10:03] INFO: chain[2] - <truncated> 20:10:03] INFO: chain[1] - <truncated> 20:10:06] WARN: chain[2] - Failed to reset pic (attempt = 1), resp: 0x00 0x00[2021/02/24 20:10:08] WARN: chain[2] - Failed to reset pic (attempt = 2), resp: 0x01 0x01[202<rest of thread truncated>
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    ""hardware_name"": ""Pace ST115 with Sodr-X-Tractor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""test jig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""pickit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
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15793,"Date: 2016-08
Topic: Is it possible to mine bitcoin with cgminer in Regtest mode ?
### Original post:
i JUST tried , but it seemed the answer was no. Am I wrong ?mining rig: Antminer U3cgminer conf: cgminer.exe --bmsc-options 115200:0.57 -o <link> -u admin2 -p 123 --bmsc-voltage 0800 --bmsc-freq 1286 --btc-address <truncated>

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23173,"Date: 2019-12
Topic: T17 help please
### Original post:
I have a T17 40th thatn when it power it on both the red light and the green light both constantly stay on and never starts hashing or obtains an IP address. I have tried to reset it from the machine but it wont reset. Any suggestions would be really appreciated.

### Reply 1:
It has a long auto-tune process before it starts hashing. At least 5 minutes. Have you waited enough?But it should have got an IP very quickly. How are checking that it has not?

### Reply 2:
I run about 50 machines and this is the first time Ive had a problem with one. I use angry IP scanner plus it was assigned a static IP. I waited more than 5 minutes prob more. I am going to go back to my shop and mess with again, but Im concerned the board may have went

### Reply 3:
nah they can be flakey.try a different eth cable.try advanced ipplug and unplug the eth jack 10 timessometimes new gear has coats of electric resistant materials in spots it should not have.Power switches on heavy duty audio amplifers can be guilty of this.I assume this is a new unit.If it is try blowing canned air in the ethernet jack.if you have had it for months the contacts could have oxidized a bit.clean with q-tip and 90% alcohol.blow out with airtry new cable.also be sure to try a different jack in the switch.good luck.

### Reply 4:
I heard someone with the same issue both red and green light blinking. According to them, it is related to program issues resetting it should be fixed the issue. If the reset button won't work to you try to use the IP reporter button. Hold it for 15 seconds make sure to run the miner first at least in 10 minutes before you perform this.That method works on s9 miner but if not maybe the IP reporter button is stuck that is why both LEDs are blinking. Try to keep pressing the button repeatedly until both LEDs stop blinking.If this doesn't work the miner might be defective.Since it's new you can send it back to bitmain to replace it with the working one.

### Reply 5:
This is my oldest t17. I bought it off ebay in august and dont even want to admit what I paid for it. I was running fine until yesterday when I hooked up 4 new ones that were delivered. I tried everything philipma1957 recommended but nothing worked, but thank you for the suggestions. Ive tried letting it run for a bit 2-10 minutes and using the reset button but that does nothingIve tried the IP reporting button, but not for 15 seconds, I'll try that next time and see if that works.Im going to check the warranty but think its going to be close. I uploaded a video to shows what its doing, thats is all just stay like this. Smash that like button,jk.<link>

### Reply 6:
Do you have extra control board for t17? Try to replace it then test if it works without any issue your problem is the control board you need to find the cause of the issue. You might need to flash the control board with the SD card. The problem is Bitmain didn't release a program recovery for the t17 control board you might need to contact them to request for the t17 software/program. Look at this S17/S17Pro/S9 SE/S9k/Z11 control board program recovery (SD card flashing with customized PW)

### Reply 7:
I wound up ordering a new board off of ebay and everything works now. I may try to salvage the old board with an sd card but the machine is running. Thanks for all the input

### Reply 8:
Just for giggles, can you plug the controller board into a power supply and see if any of the chips get hot or warm? I had a S15 come in dead and it turned out the CPU chip was getting extremely hot. Traced it down to damage in one of the I2C lines, I think what happens is that the boards I2C goes straight to the CPU without any buffers or schmidt triggers. And when the line causes the CPU to go bad you have a short in the chip that gets the CPU very hot and eventually fails.Only reason I figured this out was because KNC Titans had the same problem with the serial lines from the FPGA directly driving the hashing chips. A surge or spark or oddness would blow up the line, and the FPGA would get hot and eventually fail/burn out.

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17264,"Date: 2012-09
Topic: Need Advice For Hardware Budget.
### Original post:
I Need Advice On what the best (and fastest) gpu I can get To Replace My current MSI 6570 Please. 2nd Hand cards are Welcome My Budget is a bit Tight Though ($300) - and I'm afraid as far as 2nd hand cards concerned - Paypal is My only Option. NO Nvidia's however...ATI's only...

### Reply 1:
Thank's Anyway - I just found a ATI 5870 (first hand) at Local online Shop! For Under $300! So Maybe my whoes are at an end?

### Reply 2:
You bought a 5870 for $300?

### Reply 3:
Tiger direct had (and probably still has) 7970 reference cards for $359 no rebate. Over twice as fast as your 5870.

### Reply 4:
Not quite twice as fast... My 5870 was ~460Mh/s, and my 7970 is ~650Mh/s. Both OC'd.

### Reply 5:
you'd be better of getting a 7870, much faster at gaming and similar hashing speed.

### Reply 6:
I expected more from the 7900 series..... went back to 5800 series..

### Reply 7:
The advantage of the lower models are the 28nm power savings, but the 7970 is a beast. I'm getting 650Mh/s, and ppl get 700MH/s quite easily. Plus, it will actually have resale value in a year. compared to a 5970.

### Reply 8:
I'd have bought 5970s exclusively if they didn't seem to be so damn fragile.That said, loving the 7970s, I currently pay quite a lot for power, so being able to do 1.65Ghash whilst drawing less than 500W from the wall is just awesome.Also it makes a crazy gaming PC

### Reply 9:
I would have bought 3 5830's at $100 a piece and have 900Mhash/s....

### Reply 10:
Well... the way I have things set up and having free power, having 5870's worked out better for me... two 5870's for the cost of one 7950 and almost twice the hashing power.

### Reply 11:
Two words: resale value.

### Reply 12:
doesn't seem like it would be a huge difference... 7950 is around $300 new..... give it a year it will sell for $200ish... could probably still get $80 per 5800 series card.... I much prefer to make more bitcoins now than get a little more resale value in the future... Could say the same thing for BFL's gear.... what are they going to be worth if our fun hobby goes down the crapper....?

### Reply 13:
5800 for $300 hope its not USD or your getting raped and not just robbed.

### Reply 14:
First, this thread is several weeks old.Second, I think the OP stated elsewhere that he was from South Africa. Getting a 5870 in stock was probably a pretty rare find.

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4032,"Date: 2012-01
Topic: FPGA  development board  ""Icarus""  - 2nd batch over.
### Original post:
please PM me once you start accepting new orders.

",[]
10347,"Date: 2017-07
Topic: Big bitcoin rig/cabinet manufacturers (50-150 TH range)
### Original post:
Halo guys,I have found the advice in this forum very useful in every problem I encountered with my Antminers.Now I'm looking to buy a bigger rig or cabinet, something along the lines of 50-150 Th of mining power. I was wondering if you are aware of any credible manufacturers that do make such machines, either custom made or specific product lines.I really appreciate your insinght!

### Reply 1:
<link> Ph/s, they use this chip: <link> 0.1 J/GhIf 15 Ph/s is to much, i guess you're stuck with bitmain's S9

### Reply 2:
<link>

### Reply 3:
I am really curious how much those cost. I know it would take a sizeable round of investors to afford one. Out of my reach, but still curious.

### Reply 4:
We all would like to know...but if you gotta ask how much??? You ain't got nuff money!!!!!!!!!!

### Reply 5:
I asked bitfury and this was their response.BlockBox IC - The BlockBox IC (15PH unit) is sold out. The last batch BlockBox IC sold for appx $2.5m USD per 15PH container consuming 2MW.BlockBox AC - BlockBox AC is available as a 7.5PH unit consuming 1.1MW at a price of $1.2M * BitFury's most advanced 16nm ASIC chip * Housed at our location in Canada at 3 cents / kwh * BitFury's full service + energy costs per mth = total @ $35K/mth* Delivery in 60 days after signing * Limited Order Run

### Reply 6:
Their 16nm ASIC runs at 100Gh while consuming 0.1J/Gh/s = 100 Gh * 0.1J/Gh/s = 10Watt. (it runs faster with immersion cooling, but only AC blockboxes seem to be available).1 Watt = 10Gh/s<link> = 1 100 000 WattWith their chips, that should be 11.000.000 Gh/s = 11Ph/s. Let's assume there is a little overhead, and some underclocking... This container should run at ~10Ph/s if i'm not mistaking. To bad they say it's only 7.5 Ph<link> monthly income of one of those puppies should be ~$207k minus $35k (power + maintenance) = <truncated> =~ 7 The ROI of this setup at current diff, block reward and price should be less than 7 months...If it wasn't so damn expensive

### Reply 7:
Yah. I asked if they would lease one for 1 year (mining equipment gets outdated so fast) and what the cost would be but no response back.

### Reply 8:
Well, a chip that uses 0.1J/Gh, running with power @3cents/Kwu might keep on running for a long time before it turns completely unprofitable. Offcourse, bitmain might be ""pre-testing"" out their new product in a while, pushing the diff up and the profit down

### Reply 9:
Yah.My thought was that if you had a 1 year lease, you could get a loan (or group of miners together) to pay for the first month, and then use the profits from the first month of mining to hopefully pay back the loan (or at least a substantial part) and future months of leasing/hosting.Not sure how much the monthly lease would be, but it would be more reasonable to come up with (although would still be a chunk of change) than 1.2 million.

### Reply 10:
LULZ, so you want them to take ALL the risk and you to take MOST of the profit eh? Do yourself a favour and don't hold your breath while you wait for their reply LMFAO.

### Reply 11:
Hah. I don't expect a reply, (actually they gave me a KNC form to fill out) and the worst they could say is no. If you don't ask, you don't know.

### Reply 12:
The Spondoolies SP50 was going to be a 50TH (appx) machine in a 11U (I think?) rack mount, but Spondoolies either never sold any or sold a VERY few to a large mine before they went out of business.Nothing else came close that's even remotely current.As far as I know there isn't anyone making rack-mount mining gear at this time, Bitmain seems to given up on the idea after the S4, Bitfury doesn't seem to be selling ""miners"" any more other than their ""container"" gear, and none of the other miner makers I am aware of have ever made a rack-mount unit at all.Given lack of production availability at ALL of the very few foundries that can make current-gen mining chips, I don't see ANY possibility of ANY mining chip maker even THINKING about leasing their gear. They can't get enough chips to SELL as many as they can make, why mess around with leasing BS?

### Reply 13:
Anyone want to group buy a bitfury container?

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11687,"Date: 2011-11
Topic: Request for an RPC capable fork of cgminer  (90 BTC pledged so far)
### Original post:
I pledge 30 btc to the completion of the project.

### Reply 1:
why don't ask ckolivas to do this?

### Reply 2:
I have and he didn't seem interested. Obviously he isn't excluded from the bounty and given his knowledge related to the internal workings of cgminer could easily claim the bounty if he is interested in perusing it. If he isn't then the bounty opens development to anyone else so there is no need for us to continually ""pester"" him w/ a request he isn't interested in.

### Reply 3:
I solemnly pledge 30 btc to the completion of the project ;-)

### Reply 4:
It's exactly what I am trying to implement in the last 2 months. If RPC is possible for a miner, then a experienced system adminstrator could help integrate it into any kind monitor program (e.g. Nagios, Munin, Zenoss, Zabbix,.... etc.).Since I don't like C that much, I am using Python as my primary language. I think we can use poclbm as a foundation, and do the following implementation:1. Auto kernel tuning (the algorithm could be referenced to cgminer)2. Temp / Fan auto control (the algorithm could also be ref to cgminer)3. Status monitoring (pull mode and push mode)PS. Regarding to 3, the pull mode is like ""Getting status every 5 minutes"", and the push mode is like ""Send status as soon as I got any news"". I am thinking of using a web framework like Django or web.py to implement the JSON interface in a RESTful way.

### Reply 5:
I wouldn't have any interest in poclbm based miner. cgminer is simply put the best miner hands down. Multiple GPU per instance, superior block change handling, ADL support built in (temp/clocks), etc. To recreate all the advantages of cgminer in another miner and then add RPC support on top of that would be very difficult and beyond the scope of this bounty.

### Reply 6:
What DeathAndTaxes said... I pledged for a forked version of cgminer, not a new one...

### Reply 7:
I pledge 10BTC towards bounty (and as previously stated.. a cgminer fork.. not some poclbm version)

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15726,"Date: 2016-04
Topic: electricity bill price good?
### Original post:
That is a real tossup there. I ran a quick calculation though my IRC bot.:Code:At the current BTC price of 419.50 USD a miner/hardware that cost 750.00 USD with a hashrate of 4.70 thps that uses 1400 watts at 0.03 USD/kWh will ROI in an estimated 1 year, 15 weeks, 1 day, 10 hours, 50 minutes, and 0 secondsI guessed on shipping but that's an s7, and psu. Now at even an average of a 2.5% difficulty increase:Code:At the current BTC price of 419.45 USD and an average difficulty increase of 2.50% a miner/hardware that cost 750.00 USD with a hashrate of 4.70 thps that uses 1400 watts at 0.03 USD/kWh will not make ROI as your miner will become unprofitable after earning 512.47 in 48 weeks, 0 days, 0 hours, 10 minutes, and 0 seconds/code]

### Reply 1:
Yes it should earn money until the 1/2 ing. Once the 1/2 ing comes no one knows what will happen The 1/2 ing comes about July 10I would have no fear buying 1 or 2 s-7s to get in the game. If my power was 2.5 usd centsAlways spend no more then you are willing to lose in this fame or any other game.

### Reply 2:
You should be close to ROI if difficulty doesn't spike tremendously like 2015, which is a possibility with the new bitfury miners soon coming out. Even though the halving is coming soon you should make a profit, and that's not counting the nearly certain price spike when the halving comes, which'll bring the block reward to 12.5, which will raise the price by a few hundred dollars most likely. Difficulty? My guess is it's going to rise A LOT because of 1. Bitfury's supposedly world-changing efficiency which will destroy this generation of miners and 2. Price and difficulty go hand in hand. Higher price usually means higher difficulty, even though as well as block reward going down, profitability will also go down. 2.5cents/kWh is a great price to have for electricity and once the new bitfury miners come out, hop on the bandwagon. You'll make a lot of bitcoin!

### Reply 3:
yeah it's good but there is not much of a different between 2.5 cent and the usual 5 cent, one save you $45 per month, the former save you half of it, so unless you have a very big farm you will not notice it with 1-2 antminer s7

### Reply 4:
and that info is under ""0.03 USD/kWh"" imagine how many it will cost on some countries with 0.17kwh ( like my own )... mining bitcoin is like a dream in some countries... even with 2,5c per kWh as the OP says is not profitable.

### Reply 5:
Make sure you are including difficulty changes on your calculations. As you really should not have a per month that remains constant. It should get less and less. Difficulty change is what makes it hard to get good numbers on ROI math. Just a lot to predict for and it's not that easy. Like phil said till having I don't see any problem with your electricity and mining. He is right about having would have a big effect (one none know what it will be good or bad). Also next gen gear could have a big effect. And we know about as much on that as we do having.... so again hard to speculate long term.But overall yes 2.5 cents is pretty darn good on electricity.

### Reply 6:
It doesn't matter if you have 1, 10, 100, 1000 of them the result is the same you won't make anything until the initial investment in the miners is made back (ROI) and that won't be for over a year if ever. The only way you could make money is if the price of bitcoin goes up in which case it makes more sense to just buy and hold.

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9132,"Date: 2015-06
Topic: bitcoin mining and your electrical outlets
### Original post:
after >15 mo of pretty much constant mining in the house I noticed the following:1. wall outlets with constant current draw (even at permissible 12.5A for 15A outlet) has changed color to brown and I see some plastic partially melted on the outside of the outlet plug.2. i think that I also saw some sparks from ""mining"" outlets during thunder-strikes that kicked the power outin addition, i had a supremely bizzarre occurrence when one outlet basically started melting without anything plugged in. It could be a spontaneous short, I just don't see how this short could have developed. the plate became extremely hot and i could see something burning or at least red hot inside the outlet, so i had to cut the power.My point is-be safe with mining equipment and electricity. i was surprised that even a supposedly safe outlet could basically put you in danger.

### Reply 1:
Most outlets are wired in series,main wires come in to one outlet,then go back up the wall & over to the next outlet.Sometimes as many as 4 outlets on a single line.You need to remove the cover & look inside,unless the wires are ""pushed"" in the back of the outlet(you may need to pull the outlet out),to see if the line goes back out.Also,most outlets are rated for 15 amps or less.You can upgrade your outlets to 20 amp models.Standard 15amp outlet:<link> outlet:<link>

### Reply 2:
A wall outlet should not be hot to the touch or change color.

### Reply 3:
Constant mining beyond 150 days your house and the ground under it start to act like 1 massive heat sink.Turn all gear off for 3 days and check all outlets that = brown/yellowalso consider some 20 amp plugswhite will show yellowing faster.<link> are your inside the wall wires 12 gauge?

### Reply 4:
of courseThe case of ""burning inside"" outlet with nothing plugged in is especially bizarre.I will open it up tomorrow and take a look

### Reply 5:
Not 100% sure, but I think that all 15A outlets are wired with 14 gauge instead of 12, which I think was what prevented me to change outlets from 15A to 20A before.I am not sure about outlets on 20A circuits, but i suspect that they are also 14 gauge, but I never run more than 12.5A on any outlet anyway.

### Reply 6:
14 gauge is the issue long (120 days) runs cause issues with them. be careful .

### Reply 7:
Interesting-what exactly did you observe re long runs and 14 gauge? i assume that you had some experience.

### Reply 8:
As part of my mining operation, I switched all of my outlets that were in use to 20AMP outlets with 20amp single pole breakers behind them. I haven't popped one since the upgrade. Denis

### Reply 9:
If you're going to run a lot of gear it's advisable to look into dedicated 240V drops with enterprise class PDUs connected to them, they're designed for that sort of load 24/7, home outlets/wiring are not. I spent about $500 to have an electrician install a subpanel and two 30A continuous rated PDUs, I can run 12KW of gear and still be quite safe. Then the only issue is dealing with the heat. Well worth it.

### Reply 10:
Add a nice surge protector if you are seeing sparks during thunder strikes. That is scary as heck. I would get a electrician to come look at it. As if that is a constant that should not be happening.On outlet becoming brown use nicer outlets. If cheap or not rated for it it can cause problems. I partially melted a kill-a-watt from being on a S4 around a month. I didnt move it, but it was not made for that amount for a month. So I have a little brown on my kill-a-watt. After this I have been more conscious.

### Reply 11:
sure works like this. you are on the edge of safety and wires slowly warm just below detection levels. So 30 days no issues but since you are just under the margin of error. the wire coating degrade all the plastics degrade.Kind of like you pasteurize milk at 145 vs boiling it.Or slow cook a steak at 145 f for 16 hours . It looks pink yet it is cooked.The plastics do the same. I have mined in house 24/7/1000 basically 1000 days in a row until last month.and Hurricane Sandy knocked me out for 3 days.I had issues like this with 14 gauge wire in walls and extension cords. I have had more then one socket turn color.A second factor is it is warmer outside and the home is warmer so all the wires get warmer.

### Reply 12:
You mention a good point on extension cables. I almost learned the hardway on that. I used a nice extension cord but was not big enough gauge it got hot and I could feel it almost to melting point. Scary as heck I unplugged it right away.I ended up buying a huge gauge extension cord and used it after. (Funny thing was it was meant for Christmas stuff but this cord is massive and never had a problem with it).

### Reply 13:
The outlets in that room is probably daisy chained. Wires run from the fuse box to that outlet and then wired to the outlet with the miners plugged in. Current drawn from your miners goes thr<rest of thread truncated>
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23082,"Date: 2019-09
Topic: Antminer S9 Hashboard Chip Number MAP....
### Original post:
Hi,Someone knows if there is a chip number map in one Antminer S9 hashboard?If we watch the log we can get information about chip numbers like this:get RT hashrate from Chain[6]: (asic index start from <truncated> Asic[02]=66.5210 Asic[03]=64.1220 Asic[04]=64.0050 Asic[05]=62.3440 Asic[06]=58.5350 Asic[07]=60.0790 Asic[08]=65.3640 Asic[09]=56.9410 Asic[10]=65.2460 Asic[11]=62.0920 Asic[12]=61.1360 Asic[13]=60.6660 Asic[14]=61.1360 Asic[15]=60.8000 Asic[16]=64.3900 Asic[17]=58.1490 Asic[18]=62.6460 Asic[19]=62.5790 Asic[20]=70.8500 Asic[21]=62.4110 Asic[22]=62.0080 Asic[23]=63.7190 Asic[24]=69.0550 Asic[25]=61.2030 Asic[26]=64.4580 Asic[27]=60.8340 Asic[28]=62.3600 Asic[29]=31.5570 Asic[30]=65.6660 Asic[31]=58.6860 Asic[32]=63.0480 Asic[33]=10.6190 Asic[34]=64.7260 Asic[35]=61.8910 Asic[36]=63.8700 Asic[37]=64.1560 Asic[38]=61.0010 Asic[39]=59.9610 Asic[40]=60.8670 Asic[41]=59.8270 Asic[42]=54.4920 Asic[43]=65.3470 Asic[44]=64.6250 Asic[45]=61.8070 Asic[46]=59.5750 Asic[47]=67.0750 Asic[48]=59.8100 Asic[49]=62.9980 Asic[50]=66.5210 Asic[51]=63.1820 Asic[52]=64.0720 Asic[53]=64.5920 Asic[54]=68.4510 Asic[55]=64.9110 Asic[56]=62.4610 Asic[57]=62.6960 <truncated> <truncated> <truncated<rest of post truncated>

### Reply 1:
I'ts not random. This should help<link>

### Reply 2:
Follow the map in the video , usually you get the answer in the kernel log in the part that states the followingCode:J[6] has 58 asicsJ[7] has 63 asicsJ[8] has 63 asicsThis usually indicates that hash board J6 was only able to sensor 58 chips, therefore , chip 59 is the one that needs replacing, then what you need to do is measure the voltage and resistance to confirm, you want to that while the hashboard is attached to a control board or you need to buy that fixture device.Another member here had a similar topic, I can't seem to find it but he did put some great info there, try to search for it.

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8857,"Date: 2015-02
Topic: How to change default mining settings on Avalon 4.1 firmware:
### Original post:
+ thank you for this info right now I did customs with 7800 volts and freq of 450:390:370i left out true for auto volts and freq 450:390:370 gets me about 25.27 freqon your setting of 450:420:370 what freq do you get??<link>

","[
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13842,"Date: 2023-08
Topic: Found 0.3.13 logs & wallet
### Original post:
It was backup over time in dropbox. Logfile contents I'm trying to <truncated> block (216 bytes)received block <truncated> new <truncated> height=23679 <truncated> ACCEPTEDConfirmed the wallet version is the same as the debug.log, 0.3.13, and read on stack exchange a later version still had that format.I noticed lapses in versions: 2.3.1, 2.3.1rc1, 2.3.1rc2, then 24.Can anyone confirm that a block was found? And how would I go about accessing it, I'm afraid to try to upgrade.Thanks a lot!

### Reply 1:
My guess the wallet you talking to is the Satoshi client. Because 0.3.13 is the old version of Bitcoin-qt version 0.5.Would you mind telling us what wallet backup you have is that a protobuf format or a wallet backup with dates?About the block you talking to according to the height, I think this is the block you talking to below- <link> was confirmed and mine then rewarded with 50BTC. However, we don't know if you own this address who receives 50BTC <truncated> confirm it you should recover the private key from your backup wallet and then import it to new wallet like Electrum.

### Reply 2:
It looks like this.. xxxx'd out the characters. Yes, satoshi wallet.Code:{ ""ckey"": [], ""defaultkey"": ""xxxx"", ""keys"": [ { ""addr"": ""xxxx"", ""compressed"": false, ""hexsec"": ""xxxx"", ""label"": ""Your Address"", ""private"": ""xxxx"", ""pubkey"": ""xxxx"", ""reserve"": 0, ""sec"": ""xxxxx"", ""secret"": ""xxxx"" } ], ""mkey"": {}, ""names"": { ""xxxx"": ""Your Address"" }, ""pool"": [], ""settings"": { ""addrIncoming"": <truncated> ""addrProxy"": ""127.0.0.1:23075"", <truncated> ""True"", ""fLimitProcessors"": ""True"", ""fUseProxy"": ""False"" }, ""tx"": [], ""version"": 31300}That's the json output via a python scipt. I have a different address. Exported the private keys and trying to import the keys. Not sure I'm doing it right. Getting an ""No Inputs Found"" using the p2pkh format. Sounds bad. Is it possible it's to old to work? Importing the actual wallet via the install wizard says file not found decode error.

### Reply 3:
Do you mean the private and secret starts with xxxx? If that's the first character it won't work if you import it to other wallets.I don't have much idea what Satoshi wallet GUI looks like but instead of using Python to backup the wallet would you mind to check the Satoshi client on the GUI if there is a backup button?

### Reply 4:
Have you tried my suggestion above?Would you mind telling us what the backup wallet file looks like?I don't know exactly what the Satoshi client looks like but I think the features are the same as the new Bitcoin core where you can open a debug console. If I'm right then check the help on the menu and look for debug>console tab then use this command to dump the private keysOnly use this if your Satoshi wallet has a <truncated> ""your walletpassword"" 600Then dump the keys using this command <truncated> [The Bitcoin address you want to dump private key]Copy the dump key and import it to Electrum.About <truncated> I don't how safe they are but there is another well-known site that offers recovery services.Here's the link <link> or contact DaveF for assistance.

### Reply 5:
Thanks! But I think I got the old wallet to import into Electrum by the bitcoin key. Transactions are coming in, but I expect it to take maybe 2-5 weeks to complete.

### Reply 6:
What do you mean? Did you already send it to another wallet?If you already sent the BTC to another wallet it shouldn't take long to transfer or send to another wallet unless the fee you set is very low or below the recommended fee suggested by mempool.space.

### Reply 7:
Thank you! I appreciate the help! I'll look into your suggestions. Yes, there's a Networks overview & it's connected to 10 nodes.

### Reply 8:
So, it's definitely the right wallet file, but i'm having problems with all approaches:My apple laptop is a work computer, and can't risk any downtime backdating libraries that will likely not work on modern mac os.import the wallet file causes ""failure to decode"" error.importing the exported wallet data into a new wallet causes a ""Cannot read file <truncated> bxo..etc"")"". It seems to be incompatabilities in OS libraries with the newer MacOSQuestion is now.. would you recommend this service <link> ?I'd really, really appreciate all your help. The wallet is 872kb, lots of cruft, but lots of blocks found.

### Reply 9:
No, I tried to load the wallet into Electrum, it definitely did not work I found out why that wouldn't work, no matter how many times I tried it. The ""Witness tx count"" is zero since it has never left the wallet.I placed the wallet into the Bitcoin Core folder and then turned on Bitcoin Core. Then realized nothing was showing and remembered the rescan config flag. So, I restarted it using -rescan=1 in the config, then will download all the blocks before sending to another wallet.Thanks a lot for your help. Don't really know what I'm doing, couldn't have done it without you.

### Reply 10:
You won't se<rest of thread truncated>
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20725,"Date: 2015-11
Topic: pci express 6 pin connectors(X4)  melted when mining
### Original post:
Hello. I have an Antminer C1 and 2X EVGA 500W Bronze power supplies.Everything has been working just great for about 8 months, but just recently my pci express connectors(6pin X 4 plugs) plugged into the Antminer all melted. There was no overclocking. Just at stock full power (250).Do you think EVGA would RMA my power supplies? Are they cool about them being hooked into Antminers? They are non modular with the cords built in so i can't just unplug them and plug in new cables. What do you think I should tell them?

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11017,"Date: 2021-10
Topic: ASIC Miner Order (aisenminer.top)
### Original post:
The Aisen A1 Pro sounds like a refurbished old miner when googling shows it at only 23TH/s and 2200W ...That performance dates back a few years at least.Even an old S9 can get a H/J like that but at a lower hash rate.If you paid $10k for a 23TH/s miner, you were ripped off.You can find them way overpriced for around $1500Sounds like aisenminer.top is a bunch of scammers

### Reply 1:
I paid $ 1800 per device for the new A3 miner from those.The miner is supposed to do 60TH / s.They also offered me to buy a sample first.(eMail from the provider)Hello!This is a new product. There is still little of it on the market. You can order 1 piece per sample. Remaining in stock for today - 3 pieces. Are you ready to place an order?EndAnd since I already have an A1 miner, please come to the manufacturer via the web interface.I assumed that the manufacturer is serious like BitMain.I did some research on the internet and found the following article.<link> your opinion ?

### Reply 2:
The website is offline right now, preparing for ""something cool"" so I have no clue what they were advertisingand the last archived page doens't look good either:<link> you buy a sample, that means a unit, just like you would place a normal order, that's not really an offer!60TH for 1800$ is simply not believable at this point.The gear would match an S17 or an M21 and you can't get those even used for under 3000$.It's 2021, not 2019, comparing the efficiency of this gear with an S9 is simply wrong, compare it to the best you have on the market and then you have some true perspective on efficiency. Your A1 has around 0.09j/Gh, the S17 0.04, S19 0.03.That being said, I'm really curious what this A1 of yours is, looks like some less efficient copy of Inno T2 HF+ from the picture I've seen.

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20736,"Date: 2015-11
Topic: Noob please help
### Original post:
I'm new to this please bear with meI need a example of bat file for cgminer for slush's pool Also im mining from laptop using asic BiFury 5 GH/s i dont want to use my GPU.What code do i need to type into bat file?

### Reply 1:
Here is mine for the sidehack stick;cgminer.exe -o <truncated> -u address.workername --compac-freq 225 --suggest-diff 18The exact config is going to depend on which version of cgminer and which hardware you run. You should be able to do a search for exactly the hardware you have. You say ""also a bitfury"" what is the other thing you have?

### Reply 2:
I think he means that he uses his laptop to plug his USB miner in, meaning that he only has a single Bitfury miner.

### Reply 3:
He should be fine unless he clock it too high. I think a usb 2.0 port can handle 500mA and a 3.0 900mA it was. It would have to be a pretty crappy mobo to have problem supplying this little.Have to do the math base on the miner's spec but he should probably be fine. If he mine it off a laptop that is always on, and never go to sleep/hivernate, then sure, but that does not seem like a good setup.

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16467,"Date: 2023-03
Topic: Mining Bitcoin on Water Source or Solar Power?
### Original post:
Today I was thinking that what could be the best way to mine crypto with cheaper source of energy and than I searched on Google and I found our the Solar Power or Water Source of energy could be a better option mine because they need Lower maintenance and lower cost to other source of energy.So my question is that is Solar Power energy better than the Water Source of energy. As every body has their own opinions. Let's see what will happen.

### Reply 1:
Are there any commercially available solutions for water source power harvesting to buy from like an AliExpress, or is it all DIY?

### Reply 2:
I believe that both solar power and water source energy have their own unique benefits and drawbacks, and the best solution depends on the specifics of a particular area. In some regions, solar power may be more practical due to the availability of sunlight, while in other regions, water source energy may be more reliable and efficient. If it were up to me, I would choose Zero Point Modules (ZPMs) as an energy source. ZPMs have the unique ability to extract energy from the vacuum of space, making them incredibly powerful and long-lasting. With their ability to power entire cities and even intergalactic spacecraft, they would be the perfect solution. Unfortunately, despite their potential, ZPMs are not yet widely available to the general public. Sure, you can find a water source power harvesting kit on AliExpress right next to the ""Build Your Own Nuclear Reactor"" set. But, if you want something that actually works and won't break down after a week, you might have to put in a little effort and DIY it yourself. It's not rocket science, you know?

### Reply 3:
Good one I know it's not rocket science, I've built my own 9 kWp solar power plant, I was just wondering if there are some out-of-the-box options in this field because I haven't actually got into it that deep.

### Reply 4:
The use of sunlight to produce electricity through solar panels is called solar electricity. And the electricity generated by turning the wheel using the current of water is called hydroelectricity Since Bitcoin mining requires a lot of electrical energy, you will definitely find this idea positive. But for solar power generation, a place should be selected where sunlight falls diagonally on the solar panel from morning to evening. And for hydropower generation you need to use mountain rivers and drought rivers to generate electricity in many streams of rivers. But these are just a lot of incidental costs if you can afford those costs and choose such a place then this move is right for you.

### Reply 5:
You're kidding, right? I know you're not kidding!Search a bit for more pictures of Itaipu Dam or Tucuru Dam, some of the top largest hydroelectric power stations and you won't see any mountains around. As for the drought rivers, eh!Yeah, except that in practice, when you need 24/7 all year long cheap electricity and you're not receiving thousands of dollars in government incentives nuclear and dirty old coal-generated electricity beats the crap out of any solar-generated electricity.That's why without proper government cash and solar feed-in grid tariff plans nobody would even dare to mine with solar, or if they are doing it they don't realize how much they are losing or are going to.

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10573,"Date: 2017-10
Topic: Airflow Quesstion..
### Original post:
So I totally understand that Bitcoin miners needs proper airflow to keep themselves cool. So my question is what if the hot air is sucked out properly in a way that there is no heat on the exhaust side but on the intake side there is no cool air being provided and the miners are just taking air from surrounding with whatever is available. Is this possible? What will happen in this scenario?Please do contribute your valuable comments everyone. Thanks.

### Reply 1:
I'm a little confused... are you referring to having some sort of a heath exchanger to take the heat away immediately and use it somewhere more useful? Or do you mean using ducting/placement of miners to control where where your heat is being exhausted outside the space you are using to host your miners?No matter what you are going to generate heat at the miner itself; but you definitely do not want that heat recirculating back to the miner intake.

### Reply 2:
Your miners will vary in temperature based on the ambient intake temperature. What exactly are you asking?

### Reply 3:
I should have explained it a little better....Please refer to the below pictures of Secup's amazing bitcoin mining farm in Canada...one of the best I have seen<link> you look at the pictures they have manufactured a hot aisle made out of dry wall where the heat gets exhausted out very nicely and in a powerful nature. However, I don't see any supply side of the cold air....This is what raised a question in my mind. Are they exhausting the air so well that they don't need the cold air intake at all? How is the cold air getting to the miners? Thanks.

### Reply 4:
As I said before, you need to focus in sucking the hot air out and not let the miners recycle this hot air.You can use data-center air flow theory to design your mine facility or you can use a hot room/ cold room set up.this can be achieved embedding the miner into a wall in which they will be in the middle of the separation between hot room and cold room.All of this depends on the size of your mining facility. Share more information with us so we could help you and give you advise.

### Reply 5:
I know that gpu mining is most likely not on this level of heat but my two rigs are in my garage and i have a big steel fan blowing on them but the hot air coming out of the rigs is just being blown back onto the rigs, and then opening the windows creates dust.. Im not sure what i can do more besides getting an aircon.. Which is electricity intensive

### Reply 6:
Blowing ambient temperature air on to the heat producing rigs without any exhaust simply makes the ambient temperature hotter as time passes. You need an exhaust fan set up in the garage and move the rigs close / under the exhaust fan. That way the hot air that raises up from the rigs gets sucked out before mixing with the ambient air. A large fan with a high CFM will work wonders to maintaining the ambient temp. Don't worry about getting cold air into the room. Your garage is not an air locked chamber... there will be gaps through which air gets in. If it is indeed one of those stuffy zero ventilation garages, keep the window just barely open... like an inch or two. Dust is an issue only if you keep it full open... or if we're talking Interstellar level of dust winds

### Reply 7:
Thanks for your reply man! really appreciate it. I am going to go to my local tool store to get some pricing of a extractor fan and somehow incorporate it in my garage just to get that ambient warm air out. I think this would be the best bet because with it being a garage, it gets extremely hot in there without the miners running. I am also going to install a ceiling, which should also hopefully cool the area down.

### Reply 8:
I used to run my miners in my garage which got up to 100f ambient plus and with even a little bit of airflow my S5s (long time in minerland ) would run, albeit a little hotter than i would like for them to run. Hell even cracking a window open worked for a few miners.

### Reply 9:
You can honestly go to any store, like a walmart or homedepot, and find a window fan they mount directly inside the sliding window, they work just fine for bringing air in or exhausting air out. Does your garage have an attic space, if so you can set up a fan in the access there as well, one blowing in one exhausting out. When I had 3 s5's and an s4+ running in my garage simply having my fan blowing into the space and leaving my attic access open kept the ambient temperature low enough, but on 35C days I either ran both fans or just rested 1 or 2 of the miners. I did also place a filter on my window screen to help keep dust down.<link>

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9038,"Date: 2015-04
Topic: in s3 what do this part ?
### Original post:
what do this part ? What is the purpose /?

### Reply 1:
Heat sink to cool the miner.

### Reply 2:
i have this only one missing , is problem ?

### Reply 3:
no need to make another thread!!!we can't say if it is ok to turn the miner on! we(you) need to look on the boards and check for missing components, scratched boards, is more complicated....it may work, it may not workthink if is worth the risk to power it on and have sparks fly in your house or it's better to send it back!

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21232,"Date: 2017-01
Topic: SP20 -- Can't find its IP?
### Original post:
Hi, I've got SP20. plugged my 750W PSU to it and a lan wire coming from my router. When I turn the PSU on, it runs the miner for like less than a minute at two intervals... third time, it runs for a couple of minutes and take pause ... this thing repeats itself. the real issue is... I can't find the IP address of the miner to configure it. I've tried 'net view' (cmd) and advanced IP scanner. the advance IP scanner shows my router, pc in live hosts, but there's nothing in there except these. I've reset my router with no luck. thoughts?PS: when I look at the back side of the miner, it has a green light (blinking state)? I think it's mining, but not sure for whom and on what pool.

### Reply 1:
There's a possibility that the miner has an IP on a different subnet.Have you just purchased it? First time trying to run?Probably download the firmware and boot the miner from a ssd card to recover the firmware then the miner will grab an IP address by dhcp.With the SP20's the time to worry is when the fan runs permanently on boot up.This is normally a broken controller card.Let us know if this works for you.

### Reply 2:
Yes. I've just purchased it and this is the first time that I'm trying to run it. I've found a guide, it has firmware.tar and sdcardrecovery.tar, which one should I be copying to the sd card to boot the miner from? Also, now when I run the miner, it works constantly (no pause like earlier) and there are no green or yellow lights blinking anymore? (been this for like 3 minutes)Also, assuming I'm copying the sd-recovery tar file to the sd card, do I need to uncompress it in my pc first or just copy it as a tar to the sd card?

### Reply 3:
The fan running continually is bad news.Seriously point a hair dryer into the miner and warm it up so it's very hot then turn it back on.This might (should) cure the problem.If it does then the controller is broken and the miner is scrap unless you can get a spare controller.I ran 14 of these for a while once they are bashing they are ok but Power on and off is a little scary.

### Reply 4:
From memory just copy the tar onto the sd card then it should boot.In the mining / hardware there will be an SP20 support thread.

### Reply 5:
I've managed to fix it with the help of seller (OregonMines) ... it's now mining. here's what I've done if anyone is experiencing the same issue... 1) Download sdcard recovery image > extract the files 2) Install a utility to make this sdcard bootable (win32 image) 3) Format the sdcard using sdcardformatter tool 4) Write the image to the sdcard using tool mentioned in step 2 to make it bootable 5) Turn off the miner and insert sdcard into it. turn on the miner and wait for approx ~5-10 minutes for both yellow / green lights to start blinking 6) Turn off the miner, take the sdcard out of miner. wait approx ~ 3-5 minutes. turn the miner back on7) Keep it running for like ~30 minutes, then run ip scan using a tool like advanced ip scanner and you should be able to find the miner listed8] Copy the ip, paste that into browser (login with admin/admin) ... set your voltage (if you're using 750W PSU) ... specify mining pool9) The miner will restart automatically once you specify a mining pool. that's it. enjoy.All credit goes to user tntdgcr to make this work.

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13625,"Date: 2019-09
Topic: Antminer T9+ Mod Eco FREE POWER : FULL FREE
### Original post:
Hi everyone, I decided to share my Bmminer edit for T9+ (and tested), here are the mods:- Reduction of the consumption of 300W approximately !!!- Delete Pic Flash ERROR (now working)- Custom Fan Management, run with VERY LOWEST NOISE !!!The usual procedure:Rename the Bmminer Bmminer-Old in / USR / BIN to be able to restore it if needed .... Then replace it with mine, do not forget to give it the right to execution <truncated> the reviews and your comments are welcome !!!!!!And for a small donation do no hesitate to contact me in PV Thanks !!!

### Reply 1:
hey precisely I try to take control of the fan but I can not ... waiting to change the temperature range in the control fan

### Reply 2:
is this the asicboost/version rolling version of bmminer?

### Reply 3:
No sorry, just changed card voltage...

### Reply 4:
Wow 300 watts reduction?!? How low did you set the voltage? I set mine to 780 as a test and while the temps run lower & fans are little slower/quieter I'm only seeing very minimal power savings at the wall for some reason.. As in at fixed 450 mhz frequency, 4 watts per card so ~16 watts less reading on my <truncated> set working voltage=780 [54] orignal voltage=930 [0](The typo is theirs in the code.. lol)I got the fans tweaked exactly how i like them now! Instead of the annoying way too fast or the ramping up & down over & over, I can basically now set a goal temperature & the fans auto-tune accordingly. To me this makes a lot more sense than the nonsense they build into the antminers. Wow that code of theirs on github is a mess.But yeah it'd be cool to know what you changed. ThxBill

### Reply 5:
my changes, only:810mv and 600mhz .... 11 000gh / s for 1100W on the wall 220v

### Reply 6:
Odd wonder why you see more of a decrease. Can you share the code or snippet or at least example line where it's changed? thx

### Reply 7:
OH!! You changed in completely different area than me.. I changed the ""working voltage"" section.. I'll have to check out what's different in that section you edited it in. Thanks

### Reply 8:
just try my bmminer at the beginning of the post, to check if there is an error in your code;)

### Reply 9:
Well i use fixed frequency not autotune. That's one reason I didn't edit in the same section as you. In other words I use section where volts are set by frequency not by hash rate. At least that's how I interpret the code.

### Reply 10:
me to , i'm not use autotune, ""autotune"" is very badless ....

### Reply 11:
Hi, in fact I change the original tenssion of 870mv to 810mv which is largely sufisant (have can go down edge and keep the stability), with setting pushed and some small mode I managed pushed the efficiency at 0.095j / T (original 0.133j / T) without asicboost ... the official firmware asicboost bitmain is a disaster ... and I also change the management of the fan, in the same spirit as you;) finished them fan has the balloon for nothing! but for the general public I kept a very wide beach ...Persso, my T9 + is coded with fan between 20 and 40% and a trigger temperature range at the top speed from 95 and full speed (40%) at 105 ... but this is only my setting for my environment only;)PS : if you copy me your kernel newspaper I might be able to tell you where your lack is ... and what to modify to improve this;)

### Reply 12:
OK that's cool but I have mine set to 780 & I'm not seeing as dramatic of change as you.. Maybe you're changing in different spot in the code?

### Reply 13:
Code:#ifdef T9_18 <truncated> vol_value=810; else <truncated> vol_value=810; else <truncated> vol_value=810; else <truncated> vol_value=810; else <truncated> vol_value=800; else <truncated> vol_value=790; else <truncated> <truncated> T9_18 if(freq>=650) // hashrate 12000 vol_value=810; else if(freq>=625) // hashrate 11500 vol_value=810; else if(freq>=600) // hashrate 11000 vol_value=810; else if(freq>=575) // hashrate 10500 vol_value=810; else if(freq>=543) // hashrate 10000 vol_value=800; else if(freq>=516) // hashrate 9500 vol_value=790; else if(freq>=491) // hashrate 9000 vol_value=780;

### Reply 14:
I finally got around to testing more & come find out that in driver-btm-c5.h I had to change:Code:#define <truncated> <truncated> it'd actually USE the voltage set. Logs would SAY it was setting/using the lower voltage but Watts read at the wall didn't change much if at all until I changed that. So far the best I've found is 710 at 200Mhz gives 1200+ GH/s for only ~140 Watts per card which is MUCH better than the same speed at 235 Watts per card before. Saving 95 watts per card at 200mhz!Keep in mind my goal in testing was to try & get the power usage as low as possible yet be reliable & not overly concerned with the hash speed thus running at 200 mhz. 1200 GHS is pretty respectable for 1 card using 140 watts. I should be able to get 3600 for ~420 Watts & very low heat & low/quiet fans. (It's very quiet now at <rest of thread truncated>
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21532,"Date: 2017-08
Topic: Connect an Antminer T9, S3, L3 or D3 to 220v (biphasic) in countries with 127v
### Original post:
The higher the voltage the higher the Hashes you can have, that is why I want to connect to 22ov.In my country common houses have 127V (Single phase- neutral - ground), I can use a voltage transformer to obtain 220V (Single phase- neutral - ground) and that works well except that the transformer are expensive and generates a lot of heat.What I want is to use 2 phases to obtain the 220V (biphasic). But I have 2 problems.- Bitmain told me that the antminers works in monophasic (Single phase- neutral - ground). But I heard of people that has been working with biphasic (2 phases).- To connect with two phases. Should I use (2 phases- neutral - ground) or (2 phases - ground)?Is is safe to connect the antminers to 2 phases?

### Reply 1:
""What I want is to use 2 phases to obtain the 220V (biphasic)""No, you are STILL using just 1-phase that has been split into 2 lines <link> and that is why the miners PSU's work fine. All you connect is line-to-line and ground, no neutral connection used.Split-phase 120/240v is entirely different from 3-phase power

### Reply 2:
^^^^ This is not correct.Also, the miner isnt what cares what kind of power its fed its the power supply. All power supplies will give the miner 12v, it just depends on what input the power supply can handle.

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    ""hardware_name"": ""Antminer L3"",
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  },
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    ""hardware_name"": ""Antminer D3"",
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  },
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    ""hardware_name"": ""voltage transformer"",
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]"
20809,"Date: 2015-12
Topic: Home mining - New Start - Antminer S4 + S5 - Canada
### Original post:
Everything looks good. Glad you're taking advantage of mining with low $/kWh for heating as well.

### Reply 1:
I am from Canada~The free heat/cooling is pretty nice, i use low fan speed on both miners to cut on the noise.Anyways, if you setup custom firmware on the S4 you could change the voltage, but otherwise the volt thing won't actually be applied. Apparently old S4 that were not updated still have working Volt control, it was only removed later on.Personally i don't trust the S4 stock PSU, many people had a problem with it, so i would not overclock it further than 212, personally i run 200 or 206 and i set the volt to 0670 or 0710. I'm just being extra careful here, but since my limitation now is more watt capacity at home, i preferred to run them undervolted at 200mhz and just run extra S1's (amazing little heaters that run 100% silent and can be placed anywhere ).For the S5 however, you could certainly overclock some. I run all mine at 393(1.29~1.3TH/s), except one that run 400(1.32TH/s+).For S5 noise, i now run the fan at their minimum speed (2400RPM~) and just feed outdoor air to them and having 2 fans on them really help the cooling, its insane.

### Reply 2:
Nice setup! I'm jealous of your cheap power. I'm guessing you live in Quebec with those prices.I'm just across the river in Ontario and I pay over twice as much.

### Reply 3:
Should probably have your miner ran over in our side. Maybe a friend with a garage? You pay the electricity, they get free heat? Anyways.I'm wondering if its possible to get industrial electricity rate in a small office or such. That would cut the electricity cost by almost another half and you dont have to hear the noise. Keep the quiet miner at home during winter for generating free heat + BTC.

### Reply 4:
Thank you very much. Do you think I could overclock a bit more ?

### Reply 5:
Seriously ? ouch... Still, when we go further than the minimum threshold it cost 0.10$ kwh....Anyway, I dont use my basement heater and cloth dryer so I dont really see differences.

### Reply 6:
Thank you very much for your answer. How are you able to control fan speed ? I searched around a bit and didnt discover anything about that except by adding a heatsink on a chip. Can you tell me more ?Allright I wont go more than 212.5 for my S4 and will check that out. volt will stay at 72 since i readed about the s4 power supply problem.I'll test out a better frequency for my S5 since I have a 800 watt power supply and stocked S5 are 590.Do you know somewhere I could buy better fan for bitcoin too ? In case I want more quiet stuff if running low speed on stock fans is not enough?

### Reply 7:
Update, what do you think about those stats ?

### Reply 8:
I'll answer to the question you asked me too;First the S5 look awesome. Try to keep the temps under 70C and there should be no problem.For S4, you need to setup custom firmware both for the fan and the volt. You can change the value but it wont actually be applied.For the fan, looking at your temps, its too hot for you to make the jump to the custom low fan firmware.I did not try any aftermarket fans for the S4's, i've tried S1's fan in them tho, it work and is very quiet. (But not cooler at all)However Bitmain posted this back then;<link> some people actually tried some and can tell if they are both cooler AND quieter.I heard the Scythe Ultra Kaze is good for the S5, dunno bout the S4.

### Reply 9:
How may I setup a custom firmware? Ill check the temp carefully at that moment.Thank you very much by taking your time to answer, greatly appreciated.

### Reply 10:
Its not a moment thing, you're already at the limit and you're talking about raising the temps by 20c.Anyways, its here;<link>

### Reply 11:
Nah I just want to find a way to full underclock my frequencies and then lower fan speed for when i go to sleep instead of turning it down and preserve the temp lower than 70.. dont worry i know i have to stay under 70 and to not go higher than 73v for the fragile s4 power supplythx for link.

### Reply 12:
No problem, but having to reflash the SD card when you go to bed and then when you wake up does like a pain. And i said 70c for the S5 (actually under 60C is recommended for slower hardware deterioration), but the S4 can have problems with low 60c. Start dropping chips, crash. I've had issues before my S4 reached 70c, i never reached 70c on them, they would crash or drop 3/4th of their chips.I'm guessing the sensors are not placed where the board get hot.

### Reply 13:
Cant say about that, at least i have the replaced power supply by bitmain, it should help. And yeah lol it seems a pain i think ill just reduce the frequencies and always check to keep my temp around 60-70.

### Reply 14:
0.06kwh? are you from Alberta?

### Reply 15:
Quebec, I just checked the power cost and it is ; First 30 daily KwH = 0,0557 $ CAD / KwHThen 0,0826 $ CAD / KwH

### Rep<rest of thread truncated>
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10238,"Date: 2017-04
Topic: i need to buy S9 but i have a problem with PSU
### Original post:
hi,bitmain APW3-12-1600-B2 have this note (The PSU cannot be used in countries with a mains power voltage lower than 205V. The PSU will not start below this voltage. And power cord is not included, please find one with at least 16A from your local market.)i have free electricity but its very bad which moving all the time between 185V to 220V ( using voltage stabilizer! ) without stabilizer it moving between 145V to 180Vnow, what is the best solution for this situation

### Reply 1:
A) tell us what country So I can figure what psu will ship to you.B) do not use the APW3-12-1600-B2C) read on underclock of the s-9<link> if you are willing to run at an underclock the s-9 at freq 462 uses 1080 watts at the wall and hashes close to 9.9thE) all of the above means the EVGA 1300 g2 a 1300 watt psu should do the job if you clock at freq 462 it uses 110 volts to 240 volts let me find the exact number make that 100 to 240 volts.<link>

### Reply 2:
You may be stuck buying a 1600w PC PSU which will take 120-240v.I can't say how well they will take constant voltage changes, but if it's within the range they will certainly work.Look up an eVGA 1600w G2, they're around $360 USD.

### Reply 3:
my method of underclocking to freq 462 and buying the evga 1300 g2 is betterhe saves 160 usd maybe more. he runs at 9.9 th vs 12.0 thso he loses 2 th.gear is much quieter much coolerif it is hot desert he is well off.2 th is going to earn 160 usd in about 7 months. So he would be ahead of the game for the next 7 months. with the evga 1300 g2 and a downclock.plus much much much much less noise.and less heat

### Reply 4:
Don't buy a new miner only to under-clock it, you are essentially throwing money away if you don't gain any efficiency on it (which you can't unless you are able to provide lower than 12V through PSU)

### Reply 5:
no that is not always true. i can show multiple cases where it is the correct solution.this is one right here. the math favors him to buy the evga 1300g2 not the evga1600 g2

### Reply 6:
That only applies if you are factoring the PSU price into your ROI. Depending on your long-term intentions, PSU's can be considered equity whose actual depreciation can be subsidized over multiple generations. If you are in it for a long time, you don't need to pay off the PSU with one generation of miner. By under-clocking your miner you are reducing it's value immediately, and have already lost money. If all of what he said was true, he may be better off finding a hosting solution for the same price/kW as he pays for electricity and not have to worry about power woes or varying voltage. Pretty much all hosting facilities have access to stable 200+V, which opens the door for WAY more cost-effective PSU's than the EVGA's by a huge factor.

### Reply 7:
i have also HEC Cougar CMX 1000W PSUso i can use 3 PSU to power 2 Antminer like here<link>

### Reply 8:
they said (Power supply unit is not included. You will need an ATX PSU. There are 3 PCI-e connectors for +12V DC input on each hashing board and all 3 need to be connected to the PSU for the hashboard to operate. Do not connect more than one PSU to the same hashing board!)i think about using 3 PSU (cooler master Extreme Power Plus 500W)each one have 1 PCI-6and i will use pci 4 to 6 adapter to get the otherwhat is your opinion ?

### Reply 9:
Buy a quality PSU using 3 not so good ATX psu's... just is not way to go. You are spending good money on a nice miner, getting a quality PSU is really something you should do with that.Reading your first post the APW3 is not a option as it going under 205V it is not made to operate. So what they recommend and I have been using is not a option for you. Look up again at the nice EVGA's mentioned there is a reason why people are recommending good PSU's. I personally would go for the 1600 and not underclock but that is just me. The other is a option aswell.But PSU's if you treat good you can use for multiple generations of miners, or sell just keep boxes and all your accessories. I would not touch let those cheap PSU's you mention and adapters (which we don't know quality of as no link) touch a new S9. Just wrong way to start mining with it.

### Reply 10:
I just bought the EVGA 1600 and it works fine -- already comes with all the cables necessary.I did opt for the ATX 24 Pin bridge ($5) rather than using the paper clip method.

### Reply 11:
i have this power supply too Cougar CMX1200 CGR B2-1200CM 1200Wit have 6 (PCI-E 6 pin) so it can power 2 boards <link>

### Reply 12:
this is my best choice and available in our market ( Cooler Master V1000 / 1000W )<link>

### Reply 13:
My opinion is, you get flaming cables and burned plugs . You still get burned plugs possble on both ends. This is not a good PSU. I have used them a couple of pieces with EVGA G2 cableswhich are directly tinned to PSU. Then it is durable and reliable for 2x S7 blades. But after all,<rest of thread truncated>
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17010,"Date: 2012-01
Topic: HD 6870 with 11.1a STILL NEED HELP
### Original post:
Can someone point me in the right direction for the best drivers/miner/tags for a HD 6870.I have rolled back to 11.11 so I can have SDK 2.5but now I get 265Mhash at stock clocks 900/1050and 280Mhash at 950/300I was getting 300Mhash+

### Reply 1:
I'm happily mining using 11.11 x 2.5 combo. Got nothing bad to say about it.I suggest you start messing around with vector width settings (vectors 1, 2, or 4) and work sizes (64, 128, or 256).vectors 2, worksize 128 is a very universal combination.A couple of my 6770 cards are doing great at vectors 2, worksize 256 while some other oddball mix of cards prefer vectors 2, worksize 64.Do some benchmarking and fine tuning, you'll get your performance back.Whichever settings you test, make sure to let cgminer run at least for an hour before writing down the results as conclusive.EDIT:: P4, are you a couple of miners down or did you point them away from bitminter? Some new pool being tested?

### Reply 2:
That's not how it's done! Try here: <link> way, your offer will be in scope of anyone looking for a new card.

### Reply 3:
Thanks a bunch I'm actually in the process of trying to sell it. I'm at 309Mhash

### Reply 4:
The answer you are looking for is: that even after reinstalling the 11.11 driver, you likely still are using the SDK 2.6's OpenCL which reduces performance. Multiple threads have been created where I answered this, it's almost like the search function doesn't work on the forum...:<link>

### Reply 5:
No, I just rented a rig and that agreement expired. But I have some more cards on their way, Ill be back to 2 GH permanently next week.

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9900,"Date: 2016-07
Topic: AntMiner S9 - Stops Hashing still using power
### Original post:
Hi Guys,We have an AntMiner S9 which seems to stop hashing but still uses power.When i log into the gui it shows that the miner is doing 0GHs.When i check the meter on the wall it shows a draw of 1000w.I have upgraded the firmware and reconfigured from scratch. It is setup to mine at antpool.All other 9 S9s are hashing without issue, and 2x S7 are also mining without issue.The logs show as follows.Kernel LogCode: SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1Hierarchical RCU <truncated> nr_irqs:16 16sched_clock: 32 bits at 100MHz, resolution 10ns, wraps every 42949msConsole: colour dummy device 80x30Calibrating delay loop... 1196.85 BogoMIPS <truncated> default: 32768 minimum: 301Mount-cache hash table entries: 512CPU: Testing write buffer coherency: okftrace: allocating 17687 entries in 52 pagesCPU0: thread -1, cpu 0, socket 0, mpidr 80000000Setting up static identity map for 0x804ab220 - 0x804ab278CPU1: failed to come onlineBrought up 1 CPUsSMP: Total of 1 processors activated (1196.85 BogoMIPS).CPU: All CPU(s) started in SVC mode.devtmpfs: initializedNET: Registered protocol family 16fpga bridge driverDMA: preallocated 256 KiB pool for atomic coherent allocationsL310<rest of post truncated>

### Reply 1:
If you are root root to access the gui it change it to :root !QAZ5thn&UJM$$1234 use a long password different then root some thing like the one above

### Reply 2:
Thanks for your advice, can you see any reason in the logs why the miners would stop mining? And if you do, can you advise me how I can correct it? I have literally no idea myself on this one.

### Reply 3:
I think if you are burning power and have an internet connection it may be misdirected .if you are burning power and have no internet if should show in the logs.

### Reply 4:
It isnt misdirected. The hardware actually shows 0GHs.Also, when it is mining, it works fine, it just hits this strange mode where it stops and is appearing to burn power without actually doing anything.I copied the logs at the beginning of the thread, do you know what to look for to help diagnose this issue?

### Reply 5:
I looked at the logs after I posted and frankly can't see the issue. since you have working s-9s' and since this one works a line by line comparison between a good s-9 and the dud is in order. I also suspect the psu may have an issue since it is burning watts well under the norm of 1300 watts (1000 watts) or you have a rapid fire internet dropout return like a light flickeringI have had your issue happen on s-3's . I would burn power and get no hash.It was an internet issue as I was dropping my internet on one unit. I replaced the eth net wire and all worked.I would swap the net cable on the s-9 end with a steady s-9 watch for a day.if it still happens I would swap a psu with a steady s-9 for a day.if it still happens I would ask more questions here to see if some one has your problem.It could be the controller is rapid fire dropping net connection. and the issue is the port on the controller.

### Reply 6:
Nice one. Ill take a look in the next couple of days and give it a go.Thanks.

### Reply 7:
Don't Antminers mine locally if the Internet connection goes down?As said above check cables, change port on switch etc.

### Reply 8:
I have now changed the ethernet cable and also assigned static network details.I cannot run the traceroute test via the gui, however, when i login via SSH and run a traceroute to any address it returns all hops fine. The gui just comes back with ""Ajeax Error"".I have re flashed with the 600M firmware. Same issue.Basically, from command line, all networking seems fine.Will see how it goes moving forward. Ill keep you all in the loop.

### Reply 9:
i have the same issue with an s-7

### Reply 10:
I have done some experimenting.It would appear that the solution to my issue has been to simply manually specify the IP address details.When I checked Code:route -nI would not have a default route when I picked up by DHCP. I have set it statically, and all is working well.It has 9 other S9 miners and 2x S7 miners in the same switch.... None of them had the issue, and I changed the cable... Same problem.Odd.. Bottom line, it appears to be working now.

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    ""hardware_name"": ""AntMiner S7"",
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  },
  {
    ""hardware_name"": ""meter on the wall"",
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  },
  {
    ""hardware_name"": ""ethernet cable"",
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  },
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    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""switch port"",
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]"
21497,"Date: 2017-08
Topic: Step by step guide for MinePeon on the Raspberry PI
### Original post:
dats real sweet, very nice dude.

### Reply 1:
Thank you for the tutorial, very useful. I am not an expert and I have a very basic question.I am having a problem with point 9.Where am I supposed to ""Enter the IP in your web browser (on your PC) and fill in your pool account""? I registered on BTC guild and I can't really understand how is my cgminer going to mine for me?if I stick the USB erupter it works...donates to <truncated> you

### Reply 2:
It works! Thank you very much!

### Reply 3:
Did you try to SSH into the Rpi running Minepeon?If so did you have to configure SSH?Thanks

### Reply 4:
I followed your guide and was up and running very quickly. ThanksIf the Pi boots, and you see the green led and yellow network led, you can skip the ifconfig and not bother to connect a monitor. Just log into you router and check you lan connections.You will see minepeon the mac and the <truncated> day <truncated> day <truncated> day <truncated> day <truncated> day 00:00:00Might be a good idea to reserve that (or one you prefer) IP so it wont change.

### Reply 5:
SSH is working out of the box.minepeon/peon

### Reply 6:
I have something to add to this. Minepeon, the dirty donation OS!I got some USBs yesterday, set up my hubs, got everything ready, plugged them all in, I see the pi happily booting, and then suddenly I see they are getting accepted shares. I get my IP, SSH in, and sure enough he's got it to start mining towards his ""donation"" accounts by default. Fair enough, right? Why waste any clock cycles? Give the guy a few cents. So I change the pools in cgminer to point at my own pools. Save, exit screen, and watch the hashrate increase at my own pool. I then go to bed. I wake up in the morning and it's back to donating again. How could this be? I scan the system for the word ""donate"" and I find a file in cron.d/hourly which contains <truncated> by default, the system will REMOVE your pool configuration and mine for the minepeon donation pools, and keep checking every hour to reset it back. Minepeon took $5 from me, lesson learned. But I need to post this here to let you guys know. I'm fairly certain the command Code:rm <truncated> solve this problem. If you look on his Wiki Page for MinePeon he makes no mention of this behavior or how to disable it.

### Reply 7:
I'm just realizing now that there is a web interface. I figured it was just a linux box with cgminer on it, so configuring cgminer and then letting it sit is not the way to do it. You need to use his web interface.. looking into it, he has it set to take your config down and put his config back up 15 minutes per day by default. If you have just configured cgminer itself and not his web interface witchery, it will take your config down and put his back up, and then 15 minutes later put his other one back up, again containing donation details but intended to put your <truncated> pools. So I guess his intention was to only take 15 minutes a day but it just undid what I did by default behavior.

### Reply 8:
Hi,I apologize for the issue, its actually one that is well documented here and one that I am working on. I will give you the long explanation so you don't have to trawl back to find it all.One of the most common features asked for is to be able to mine using different settings at different times of the day. There are many reasons to want to do this, my reason is that I want to be able to mine with one account for part of the day and them mine with another account for the rest. That way I can divvy up the hashrate of a single device over multiple users if there are many people who have shares in a device.In order to do this the miner needs to switch configuration and this is what is proving to be problematic so fat I have tried;-1. Switching the configuration using the API2. Switching the configuration file and the using the API to restart the miner3. Switching the configuration file and using the API to stop the miner and the OS to restart it (this is where it is now)4. Switching the configuration file and using the OS to kill and restart the miner (this is what is on my workbench at the moment)The first 3 methods most of the time, but most of the time is not acceptable to me (or <rest of post truncated>

### Reply 9:
That is indeed the offending code, however it does not do what you say.What it actually does is;-Code:1. Check to see if it is midnight2. If it is midnight check to see if there are any donation minutes set.3. IF there are any donation minutes set do this;-3.1 Move the miner config file to a temporary one3.2 Move the donation config file into place3.3 Restart the miner (with the donation config file)3.4 Move the 'original' config file back into place.3.5 Mine for X minutes (as set by donation)3.6 Restart the miner (with the original config file)Like I said above, it is the restart that is proving unreliable and I am about to try a forth way of do<rest of thread truncated>
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21447,"Date: 2017-06
Topic: Remote Ant Miner Software?
### Original post:
Is there a way I can access the full functionality of the AntMiner software on a different network from where the actual miner is connected to? Currently, I access it through the IP address when connected to the same network, but I would like to know how to access it and all of its features remotely on a different network.

### Reply 1:
<headbang headbang headbang>Oh I don't know... Ever think of looking in the Mining Software section of the forum???Personally, I use Awesome Miner to run my farm at work.

### Reply 2:
As pointed out above, Awesome Miner is very popular to use together with Antminers, and all Antminers are fully supported.The most secure way of connecting different networks is to setup a VPN solution.

### Reply 3:
Here's a solution to build a VPN server from a Raspberry Pi:<link>

","[
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  {
    ""hardware_name"": ""Awesome Miner"",
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  },
  {
    ""hardware_name"": ""Raspberry Pi"",
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21309,"Date: 2017-03
Topic: Can't connect to my S5 antminer ip
### Original post:
I got my S5 all set up, and found it's IP on my router on client list. But every time i try to put the IP in my web browser but cant access it.

### Reply 1:
Be sure to have same range IP on your network compare to your S5.S5 ip : 192.168.1.x with mask 255.255.255.0Your router : 192.168.1.1If you have 192.168.0.x or 192.168.2.x you need to change your IP range or set your mask to 255.255.0.0

","[
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    ""hardware_name"": ""router"",
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  }
]"
11236,"Date: 2022-12
Topic: [Guide] Dogie's Comprehensive RockMiner R-Box Setup [HD]
### Original post:
bfgminer is supporting rbox already?

### Reply 1:
Not that I know of. Was a stray line, sorry.

### Reply 2:
LOL... stray... doggie... LOL

### Reply 3:
Great guide as usual!I also really like the ~34 mb picture of the board...

### Reply 4:
Thanks for the great guide, I know my customers will appreciate it.

### Reply 5:
""Comcast hates him""

### Reply 6:
I am designing 3d printed cases for the ATX breakout boards. Should have them ready within a day or so!

### Reply 7:
Self succulent cooling? Must be tasty.... If you like eating steel and thermal paste

### Reply 8:
I assume the equivalent .conf entry for the frequency would be:""anu-freq"" : ""270"",The Rock site (somewhere) had ""--rock-freq 270"" in an example. Are you sure ""anu"" is correct? (I'll probably try both anyway but thought others might have the question as well). You also might note that 290 is the 'advertised' max freq the vendor recommends.Thanks!

### Reply 9:
Fixed: <link> don't talk about overclocking on these ones as the product is already at the part of the power curve where any higher power consumption makes it ridiculous. We should really talk about underclocking.

### Reply 10:
Got it. thanks!

### Reply 11:
That part of the doc is inaccurate, the parameter used is anu-freq. For those of you using Rockminer's 4.3.3 windows build, you may also notice that it defaults to 270 no matter what setting you use. I've rebuilt the binary with the latest 4.3.3 code and that resolves the issue. If you're looking for an end to end simple installer for Windows, I have built one using the WIX toolset:Windows InstallerAnother great guide dogie!

### Reply 12:
Officially, they support 270-290, which gives the range of 32gh/s to 37gh/s. I wouldn't recommend going over 290 clock rate but I think I read about someone underclocking to 200.

### Reply 13:
Having trouble getting these to work in Windows 7. I followed the direction at <link> I plug them in, they're detected as a USB device, as expected. I tried replacing the drivers with zadig_xp_2.1.0, zadig_v2.0.1.161, and zadig_v2.0.1.162. Regardless which one I use, the drivers are installed, and they show up as USB devices, however, CGminer isn't finding them. Tried both the included cgminer win0.3.1 and cgminer 4.3.4. When I use the option ""--rock-freq 270"", I get the error, ""Unrecognized option: --rock-freq 270"". I tried replacing that with ""--anu-freq 270"", and I don't get an error, but it still does not detect them.I do note that Zadig detectes them as CP2102, not CP21202, as the guide suggests. I have previously used BFGminer on this machine with the appropriate drivers.Update: Tried CrazyGuy's install - just sits there on ""Started cgminer 4.3.3"", and eventually starts with no devices.

### Reply 14:
Got it working. No idea what was wrong, but I unplugged the USB cables, moved them over to two other ports, and reseated the power cables - started working.

### Reply 15:
Sometimes you need to re-plug in a device when installing Winusb after FTDI. Your best bet if switching to cgminer is to completely uninstall FTDI drivers in device manager.

### Reply 16:
Guide says to use:Code:--anu-freq 270This should be amended to:Code:--rmu-freq 270You can see the freq in the top. If you use AMU, nothing changes.

### Reply 17:
--anu-freq is correct, but Rockminer's 4.3.3 build has an issue with frequency settings. You'll need to either build it for yourself or use the version of cgminer included with my installer.

### Reply 18:
Dogie,Had to make a TRUST entry for you,You are such an asset to the BTC community.Thanks for all you do!

### Reply 19:
Thanks. As of Wednesday I'll be here full time, more planned.

### Reply 20:
+1 millionty

### Reply 21:
What are the dimensions of the heatsinks?

### Reply 22:
What specific bit, they're quite contoured and are definitely custom. I'd have to take on apart again.

### Reply 23:
I just need the outer dimensions in order to properly size a case for them, ala: The heatsinks will rest on the bottom ""lip"" of the support beams, so I just need to know how much room is required between the beams.

### Reply 24:
The fins are 89mm tips to tips while the bottom bracket is 86mm. The bracket is 4mm thick. <link>

### Reply 25:
nice clear guide good job as you normally do. I will now try to see if I can get it to work. thanksworking now and using a sea sonic 1200 watt platinum psu. with some pcie adapters.two of these with the high end psu use under 70 watts I am impressed. also very quiet.

### Reply 26:
Does anyone have a guide to getting the R-Box running off a Raspberry Pi? Cheers!

### Reply 27:
It will get messy due to the zavig requirement, will be possible though.

### Reply 28:
I have 2 units plugged into my main windows 7 pc. After a reboot, one rbox will no longer be recognized by cgminer. The other one immediately flashes a blue light and starts hashing when cgminer starts. I<rest of thread truncated>
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22784,"Date: 2018-10
Topic: T9+ HashBoard Work for 20 min and go down
### Original post:
Look at this lineCode:Chain[8] Chip[1] TempTypeID=41 middle offset=37Chain[8] Chip[1] local Temp=66Chain[8] Chip[1] middle Temp=93Special fix Chain[8] Chip[1] middle Temp = 81Done read temp on Chain[8]do read temp on Chain[10]Chain[10] Chip[1] TempTypeID=41 middle offset=33Chain[10] Chip[1] local Temp=67Chain[10] Chip[1] middle Temp=80Special fix Chain[10] Chip[1] middle Temp = 82Done read temp on Chain[10]It looks like it reach the high temp protection that is why your miners hashrate is down or stop you must add more cooling devices in your room or you can try to change the fan speed to maximum speed. You can follow the guide here <link> but first do a reset it to factory default here's the guide <link> me know if it's still persist.

### Reply 1:
HI peapol; this time have a litel problem on my T9+.this miner work ok for 20 min aprox and past this time (20 min aprox) go Down one of the Hashboards. 00000 GH/S(RT)see the picture:<link> kernel log:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobilit<rest of post truncated>

### Reply 2:
While increasing fan speed would be helpful, I don't think adding cooling devices is necessarily good advice. Rather than trying to cool the room down, try to exhaust the heat outside the room, so that you are removing heat as opposed to cooling it.

### Reply 3:
Thx i think this is better idea!my room is this actually!!!<link> have exhaust fan is completely closed. is recommended install a exhaust fan?

### Reply 4:
Great setup and I think you don't need to add exhaust fan to take hot air out. Let me know what is your temp right now with this setup? and let me ask about your weather temperature in your place?If your setup still gives you 80 degrees above try to add more fan(air flow or electric fan) make sure your miner is not very close to each other. If still exceeding 80 degrees my guess your hashboard heatsink is not glued properly.

### Reply 5:
are you still watching the thread ? i have new T9+ 4 out of 6 blades down .. very colse to the same log . info on the t9+s is so hard to find did you get your sorted out with airflow?

### Reply 6:
Do you mean that your T9+ fan blades are broken? Increasing the fan speed won't help too much to take down the temp. The best solution for that is to replace it with a new fan. There is an online shop where you can buy a cheap fan for t9+ you can check it here <link>

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16250,"Date: 2022-04
Topic: How a massive untapped source of energy could save the world.
### Original post:
The physics behind this idea have been known for over 200 years. If it were possible to generate lots of power cheaper than existing sources, somebody would've tried it by now. It would probably cost trillions of dollars to build a bunch of flywheels that had enough mass to generate even 1 megawatt.It's probably a better idea to build more hydroelectric dams, or make nuclear power cheaper.

### Reply 1:
The lakes created by dams are devastating to the environment and depleted nuclear waste is extremely poisonous but can't be disposed of like trash. It has to be stored in very expensive ways for many years or it will escape and give people cancer. Solar panels are inefficient and don't least nearly as long, and wind mills don't produce consistent power and kill birds.If built right, these gyros will last for millions of years and have zero impact on the environment.

### Reply 2:
Nothing has zero impact.However, 25% of Iceland's power is geothermal ...

### Reply 3:
Geothermal heat comes from magma, which means volcanoes. ...right then!This gyroscopic world engine has the least impact.

### Reply 4:
This has to be one of the craziest ideas I've heard here, at least try to a normal gyroscope as the Russian tried twenty years ago but still failed.There is a far easier to harvest energy that is generated somewhat by the same rotation with a little help from the moon, that is tidal waves, it would be far easier to create artificial estuaries for this rather than putting disks around the earth.Has already been tried, even with the theoretical gain the loss of energy incurred by the gears still gives a negative effect.Yeah because they will be made be of unrealizablium probably.

### Reply 5:
If you'd build this ""disk"", it would create a very large force with a very small movement. That's not easy to harvest, there's a reason any conventional engine runs at high RPM. If you end up with 1 round per day, that's not very useful.I was going to suggest this too. Tidal energy comes entirely from the earth's rotation. It even ""leaks"" a bit of energy towards the moon.

### Reply 6:
<link> rotational energy of the earth is estimated to be2.138 x 10^29 joules, or 5.9388889 x 10^22 kWh.<link> electricity consumption in the US in 2020 is estimated to be 3.8 x 10^12 kWh.The total number of years we can consume the same amount of electricity as theUS consumed in 2020 from the rotational energy of Earth is5.9388889 x 10^22 / 3.8 x 10^12= 1.5628655 x 10^10 years= 15,628,655,000 years.1% of that would last 156,286,550 years without harming the environment.A 10x rate of consumption would last 15,628,655 years without harming <truncated> World Engine I - A simple diskWith a disk located at the equator and spinning on an axis that is always longitudinal,the rotational axis of the disk will appear to flip 360 every 24 hours on a 2nd axiswhich is always latitudinal. The first axis is not actually flipping though, it's just notrotating with the Earth. The difference of motion creates a potential source of power.Prototype World Engine II - A Ring of DisksWe can combined the torque of many smaller disks around a large ring. The disks aremounted around the edge of the ring so that their axis and planes of rotation areperpendicular to the ring's axis and plane of rotation. The <rest of post truncated>

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    ""hardware_name"": ""nuclear power"",
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    ""hardware_name"": ""solar panels"",
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    ""hardware_name"": ""wind mills"",
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    ""hardware_name"": ""gyros"",
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  },
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    ""hardware_name"": ""gyroscopic world engine"",
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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Prototype World Engine I - A simple disk"",
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11678,"Date: 2011-11
Topic: Do you guys prefer linuxcoin final or 2.1.b ?
### Original post:
I've been messing with both and it seems to me that 2.1.b is more lean, but since I'm a newb, I'm probably not realizing the advantages to the final version.Thanks in advance for your comments.

",[]
11518,"Date: 2011-07
Topic: [newbish] Any alternatives to GUIminer?
### Original post:
# So, is there are any chance to have any graphical alternatives to this program? I'm not complaining about it's functionality, but it would be really great to see something else... What do you think?

### Reply 1:
have you looked at AOCLBF <link> has a few features that might interest you but it requires that you d/l Phoenix too so is a little more work to set up than guiminer

### Reply 2:
I second AOCLBF, it officially blows guiminer out of the water. Its updated more often, has more features, and allows you much more flexibility in mining.

","[
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    ""hardware_name"": ""AOCLBF"",
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  },
  {
    ""hardware_name"": ""Phoenix"",
    ""hardware_is_owned"": false
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]"
23692,"Date: 2021-09
Topic: what asic miners did you choose?
### Original post:
Hi. I preparing to buy my asic miners to start. If you have 60.000 to spend in asics, wich ones did you choose to mine? wich models exactly?thank you

### Reply 1:
It should depend on the profitability, if you are going to invest in ASIC then it would be better to research first which miner will give you profitHere are some tools that you can check - <link> <link> terms of durability then check MicroBT whatsminer.

### Reply 2:
It's like asking someone what car to buy for 60k? when you ask the question as is, the answer will be of no benefit because nobody knows anything about your personal case, there are some factors that would determine the most suitable mining gear for every individual case, what is your power rate? how much capacity do you have? are you okay when used gears or not? You need to list as many details as possible if you want an accurate answer.

### Reply 3:
im looking that since time and i dont know what to choose. I think mine bitcoin can be worst decision. Maybe ethereum is the easiest wayand i cant find any powerful whatsminer to buy. I visit the websites where is announced to sell but all is selled. energy cost: 0$power reserved for asics: 15.000w in one placeused gears? i dont understand that sorryim confused because lot of people says the time for personal mining as ended, and its better buy altcoins or btc with this 60.000, or other experts says: ""The sad truth is that most newbies buy the wrong equipment for the wrong price at the worst possible time.""probably i have a bad future for for health reasons, and i wish have a way to make money to make my life more easy. But its difficult make the correct decisions.

### Reply 4:
They have MicroBT Whatsminer M30S++ with 110T hashrate only this and the s19 pro from bitmain are miners with the highest hash rate?What powerful miner exactly do you looking for? Are you looking for ASIC miner that mines altcoin? Then this is not the right place to ask this you must go to altcoin mining section.

### Reply 5:
Thank you. I didnt know exists one section for altcoins mine. I do a new post in this placeMy idea is buy 6 miners of 100th/unit aprox. if i decide mine BTC. Problem is lot of people says mine BTC is useless now if you are not a professional business of mining. What do you think? I wish install one asic at my home and other 5 in my business

### Reply 6:
Useless? I think you have a LOT to learn... But you can always sell it, its your loss (in the future you will cry for having sold).How much you have isn't as important as how much the electricity will cost. That's what matters in the end. Europe is too expensive, unless you find opportunity with renewable sources or wasted energy such as from a refinery or oil rig.

### Reply 7:
He said people are considering mining bitcoin as useless, not bitcoin.Again, read what he is saying:Used gear, gear that is not new, second-hand gear, refurbished gear etc.You buy right now a new S19pro at 100$/Th that earns you 30cents/th a day and in your case with no electricity cost, an ROI of 333 Days or you go for a used M21S or T3 you can get at 40$/Th and you ROI in 133 days (if the miner survives that long or if you don't end with a kinder surprise miner).I'm pretty sure mikeywith can tell you some far more accurate prices on this, but as he said, it's a bit of math to be done when choosing what's best for you, not just buy the most powerful miner and that's it.Oh, and a word of advice, before ordering from some random website that has available gear with lower prices than everyone else, ask on this forum if they are legit, there are hundreds of scams out there.

### Reply 8:
Due to Bitcoin price increase, the miners you want to buy any unit with 100th+ is also increase in value because of the price massive price increase of bitcoin. It's not the actual price compared before. That is why they say it's useless to mine BTC because the ROI takes too long to reach if you bought a sample Antminer s19 pro the price is around $10k which is overpriced actually compared last year. So those who bought that gear early already get the ROI after the massive price increase. Bitcoin price is too volatile we don't know what could be the price in the future. Those sellers and distributors of new gear only rely on the price of Bitcoin and profitability that is why the price of that gear always changes.I wouldn't suggest you buy this new gear if you don't know what you doing it would be better to start reading this- <link> I agree on what stompix suggestion try to start buying with 2nd hand or used miner. You can get fast ROI on that machines compared on new ASIC miner.

### Reply 9:
we call mining asic ""gear"", I hope that is clear enough by now.The problem with your request is that you have a good amount of money, free power but 15kw is really too small, in order to fully utilize the free power aspect, you need to be using cheap gears that are less ef<rest of thread truncated>
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22981,"Date: 2019-06
Topic: Consumption management
### Original post:
Hello!I try to change parameters of ASIC Antminer S9. I found how is possible to change chips frequency by direct setup frequency (in MHz) or/and by setup voltage (in volts) but i did not find how to manage them by consumption (in watt).Is it possible to manage ASIC consumption by setup consumption (in watt) directly?

### Reply 1:
What is your goal? Increasing hashrate or increasing energy efficiency?

### Reply 2:
well , if by directly you mean blindly then no, if you want each miner to consume the exact precise wattage then it's also a no, but lets say you want them to be in the range of 800-820 watts each.you will only need to do it on 1 miner, say you set the Frequency to 500 and voltage to 8.0 , you are happy with the wattage, simply apply the same numbers to all other gears, however ! not every single board will work perfectly with other board's setting, the difference is not too huge but there will still be a small difference in terms of hashrate/HW and power consumption.but overall by doing so and slightly adjusting the voltage and the frequency based on the average number you want , you will end up with more or less the same power consumption.

### Reply 3:
I wanna provide in user interface possiblity to setup consumption in watts for each board separately (or may be for all in total). Now i can provide only frequency in MHz and voltage in volts.Thank you for advice! After set the frequency and voltage how i can get consumption in watts? Is it possible to get watts from bmminer software (i did not find code that responses for consumption in watts)? Or it is possible only by some external devices?

### Reply 4:
I don't know what the firwamre you use is capable of , but in general i am not aware of any thing on a software level that will give you an exact wattage reading, i don't think it is possible, all you going to get are probably just some estimations, i know this for a fact that i use some special OS for my gpus and it does tell you the power consumption of each gpu but the numbers are not accurate enough. Short answer: get a watmetter.

### Reply 5:
I used bmminer from bitmaintech (<link> do you get the power consumption of each gpu? Is it open source special OS? Even if consumptions are not accurate enough it will helps.

### Reply 6:
Under GPU i mean ASIC boards (or ASIC chips on every board) in Antminer S9. And i would like to get consumption from these boards but dont know how to do it. What kind of 3rd software do you mean?Not exactly with Bmminer, i am using some parts of source code from Bmminer to manage ASIC in my own project. This is why i asked about consumption - i did not find in this source code anything about managment of consumption in watts.

### Reply 7:
Well you simply can't. Best you can do is guesstimate, if you measure your own miner with each different setting,I suggest you don't bother with this unless you are willing to provide full source code.

### Reply 8:
I guess this is the best answer so far, pretty detailed information, i would like to stress on the fact that you must limit the options on your interface.For example you can't offer say 100w per board as it will not be possible for the hardware to achieve regardless of what frequency and voltage you use, so keep the numbers whinin range of how high / low you can go about tuning each board.

### Reply 9:
So Phil the two boards did 500-501 - 60 for controller and fans = 440 /2 220 a board?you wrote 230 a Board so I guess you were guessing on controller + fan numbers.will you do some more? I realize that there are a lot to test and that your particular boards may be great bad or indifferent clockers.But more info is cool to see.

### Reply 10:
If you are talking about GPU why not use some 3rd party software like awesome miner it will give you a complete report daily including your power consumption for each GPU consumption.Are you mining bitcoin with Bmminer? I think it's not worth it to mine bitcoin with GPU.

### Reply 11:
I am using source code from bmminer-mix project from github (<link>

### Reply 12:
braiins os allows freq and volts to each board separately.as said above a freq of 500 and volts of 8.0 will give you about 267-270 watts per board.it varies board to board but those numbers are close .you could set board a to :7.9 volts and freq <truncated> volts and freq 3008.1 volts and freq 3008.2 volts and freq <truncated> board a has about 16 x 20 = 320 possible watt numbers some will not work such as 7.9 volts and freq 775.so each board can do 320 estimates3 boards 960 watt numbers on a chart. in your code.set the boards to say 8.1 volts and freq 500 and your code would sayboard a 267-270 wattsboard b 267-270 wattsboard c 267-270 wattsto do what I say means you need to test watts on a few boards make the chart set it to code . this works and would be within 10% of real number for each board if you did 10 boards 320 setting each you would be prett<rest of thread truncated>
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14506,"Date: 2011-10
Topic: Check those BTC mining cost numbers again
### Original post:
I thought of that -- the huge guys, who perhaps made lots of money early on, could have deep enough pockets to operate at a loss until most people give up.Just like Wal-mart sells things under cost for a couple years, making a negative return for as long as necessary, until all the mom & pop appliance stores, hardware stores, grocery stores go out of business. Then, when they're the only option for the people in the town, they jack up their prices and make back everything they lost, and profit every year after that. (This is absolutely true, sad to say).The only difference is, it's easier to fire up a miner than to start a mom & pop store. In my analogy, once Wal-mart is in ""let's profit"" mode and jacks up their prices, imagine if people could start a mom & pop store in a couple hours? They could undercut Wal-mart and mess up their plans.So I don't know if that is really a concern. Maybe it will just work on ""most"" people, instead of all?

### Reply 1:
Except for the fact that your essentially paying a premium for your bitcoins, not to mention hardware degradation, heat noise ect.....where on the flip side if you buy bitcoins with that money instead of giving it to amd and the power companies, youll stabalize the economy@ angelus ... walmart doesnt practice in predatory pricing its illegal, there have been studies showing they maintain lower cost for the duration

### Reply 2:
You think illegality would stop Wal-mart? They make so much money they OWN the government. They can buy however many politicians they want, local or federal.And those studies might have been paid for by Wal-mart.You need to watch the video I did about Wal-mart -- very eye-opening.

### Reply 3:
@ Angeus and you should read The Wal-mart Effect =p anyways were still in agreement on the primary issue hereThere is no rationale to mine below profitability b.c. you can simply flip the switch and buy the coins cheaper having a positive effect on the economy.

### Reply 4:
I've read several posts in the past week (in the ""Shutdown point"" thread, etc.) where people quoted a mining cost of $1.XX. I have my doubts.For one thing, the individuals seemed to use a complex mathematical formula, which seems very prone to error. I prefer to take last month's electric bill, subtract last years' amount due (for the same month), and divide that amount by 30 to get my daily cost. That seems a bit safer, no? It counts everything from CPU cost to PSU inefficiency, extra AC, fans, the whole nine yards.Maybe if you keep your PCs in a garage and you live far enough north where it never goes above 60 during the day you could throttle down your onboard fans, turn off all exterior fans, and get below $2. But when you keep mining rigs in your house, and you keep the temp around 70 (=pleasant for human habitation), then Texans and Alaskans are in the same boat. I find that I still need a small desk fan pointed between the cards, on low at least, to keep the top card below 84 degrees. For me, anything over 82 is the red zone. I don't want to damage my cards (remember that when you see my cards up for sale in the Goods sub-forum! )I have most of my fans (intake, exhaust) turn<rest of post truncated>

### Reply 5:
Miners can do both - buy coins when they're lower than their operating costs, yet also keep mining so that the difficulty stays prohibitive to others getting into mining.

### Reply 6:
i think your forgeting financial <truncated> - valid point, but still retarded

### Reply 7:
Believe it or not, there really are people mining at 1.xx per coin. I'm one of them. Where I live, electricity prices are cheap and it's getting cold outside. It's dipping into the low 30's here (Fahrenheit). When I go to bed, I turn my two window fans down to their lowest setting. With the inlet temperature in the mid 30's, the air coming out of the room is in the low 70's. In other words, I'm now using my mining rigs to heat my house. When winter hits, I'll have to only run 1 box fan to prevent things from getting too cold. Winters get into the negatives here.With my residential rates, I'm currently mining for around $1.80 a coin. When winter rates kick in, it'll be around $1.60 a coin. This also doesn't account for the fact that I'll eventually be saving a good $80 on my gas bill for heating. If I had a commercial service, I could probably shave another 30 percent or so off of a BTC (depending on the amount of electricity consumed).These rates obviously don't include my time and hardware depreciation as a factor though... If profit gets too low, I'd be better off selling the cards. If they depreciate faster than what I get out of them, it would probably be silly to keep them (co<rest of post truncated>

### Reply 8:
Yes, people really are able to achieve such efficiency.Yes, your setup is pretty average, not far off from mine. Save, your cooling efforts could use some tweaking. Most normal 'case' type f<rest of thread truncated>
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14392,"Date: 2011-07
Topic: Tips for a beginner
### Original post:
OK, first of all- I am brand new to this. Totally new. Please forgive any rookie errors, ok? So, with that out of the way. I would like some bitcoins. I have installed 'Bitcoin', have set it to 'generate coins', and have connected through a socks4 proxy to a pool website, bitcoinpool.com Is this all I need to do to start mining? Nothing has happened yet, I have 1 connection and an ever growing number of blocks (79000 at the moment). When will I see some bitcoins being credited to my wallet? How many blocks/connections do I need? All the sites I've seen about it so far haven't exactly explained this process in simple language, so any support would be very much appreciated.I am using a Macbook Pro, if that helps- 2.4GHz processor, Intel Core 2 Duo and 2GB 1067 MHz DDR3 of memory.So- any tips for a newbie?Many thanks in advance,Sal

### Reply 1:
Mining on a CPU is not time or cost effective. It will take probably 5 years or so for you go mine a single block on a CPU.Mining is only worth the effort if you are using high-end GPUs, and even then it is debatable whether it is profitable.If you want to get into Bitcoin, I would suggest selling some of your old stuff on Biddingpond, a free auction site that operates with Bitcoin. <link>

### Reply 2:
you'll wind up with 8 connections and about 124,600 blocks. takes a little while.that said, mining with a CPU (instead of a GPU) is unprofitable.see here for mining hardware comparisons:<link> and here, to calculate the time required to generate Bitcoin:<link>

### Reply 3:
Hmm, that site lots good- barely anything for sale on it though, which makes me think it's unlikely I'd ever sell anything. Can you vouch for its legitimacy?Also, they charge an insertion fee- which, seeing as I have no bitcoins, I wouldn't even be able to pay!Any other tips?

### Reply 4:
try The Marketplace:<link> stuff does sell on BiddingPond...

### Reply 5:
Standard auctions are free, you only pay for <truncated> Auction"" type promotions.But things do sell on there.

### Reply 6:
I'll check that out and try and get to grips with the marketplace.Another question- what is a <truncated> so far guys!

### Reply 7:
<link>

### Reply 8:
+1 lol beat me to it.

### Reply 9:
His reply came a month and a half later, and he beat you to it? lol

### Reply 10:
ZOMBIE THREAD of the month.It lives!!!!

### Reply 11:
Zombie just saw his first wiki

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10892,"Date: 2020-06
Topic: What to do with s9's and dead temp sensors.
### Original post:
So I am playing with my 28 s9s9 is9 j s9kI wanted to make 1 or 2 board space heaters out of themI did build 1 one board space heater5 two board space heatersI found out a lot of work arounds the last few days.One is use braiins +I found that is was easiest to under clock.I used an sd cardFirst work around: is the sd slot is upside down on some s9'sSo if you sd card does not fit flip it over it may fit.Second work around is when you move the jumper to allow sd card boot it is a small piece of plastic and a smailer metal bridge is inside that plastic. make sure that pulling the jumper you do not lose that piece of metal.Third work around is about the temp sensor chip on your boardsif they read zero they are dead and both bitmain and braiins just run the fans at full speed.Making a quiet space heater next to impossible. I have 9 boards like this. They all will make the fans run at full speed.what is the work around.since these are down clock low noise builds you need slow ppm fans that move only 1500 or 1600 rpm at top speed. load the s9 with 3 shit boards.clock to volts 8.1freq 250fans 90%the miner will run at 90 % then shift to 100% since your ppm fan is low speed max like 1500 the <rest of post truncated>

### Reply 1:
spacing.So I realized that chip reading at 0 or dead chip means these boards will cause 100% fan speed.So for all practical purposes you don't need a 4 wire fan for ppm control.I put in 2 corsair 3 pin fans that top out near 1400 rpm they are set to 90% speed and the braiins software will eventuallyy sense no chip temps and then max the fan speed out.Since I am clocking low and attempting to have a space heater with defective heat sensor I must keep an eye on the board sensors.

### Reply 2:
spacing.They have been running for 2 days they use 402 watts around 4.4 th or about 91 watts a ththey are silly quiet .

### Reply 3:
If you decide to try autotune, remember these two parameters: Powerlimit, and Target Temp. By default target temp is intentionally 89, this probably makes the fans go even slower if left alone, but you can lower it if you want. And powerlimit indirectly tells it how much power it can use, and thus not exceed a certain speed voltage combination. With autotune, bosminer+ controls chip speeds individually.You should wait until it shows ""stable"" before measuring power and noise. Good luck!Autotune may let a few errors if it considers the hashrate to be more efficient even with some, so don't worry too much if you do see some, as long as the resulting hashrate / watt use is good. People have achieved even 69W/T so you should aim for something at least in the 70ies, 91 feels a bit too high... Oh but i guess you need 240v and not exceed 80% PSU capacity.

### Reply 4:
Hmm I have switched out fans and the psu's can do 1200 on 240 and 900 or 120but with 2 boards I should set 300 watts and see what happens.

### Reply 5:
Oh i forgot to mention something. This is not obvious, but always treat the powerlimit as if there were 3 boards. It doesn't matter if there are only two or one, it doesn't literally share the amount you input to the physical existing boards, but will try to give a third of it to each, even if there is only one.But let it run at 300w just for fun (and science). I think some people had good results at 600w, another at 800w. Since you are limited to 900w, perhaps no more than 720w would be good.

### Reply 6:
I have a programmed controller but i think i did braiins and not brains + as it is not allowing every option.

### Reply 7:
You can change back and forth from Braiins OS into Braiins OS+ and back. Relevant ssh command and instructions:Switch to Braiins OS+ from other versions using OPKGSwitch to Braiins OS (without autotuning) from other versions using SysupgradeTo move from Braiins OS into Braiins OS+ you just need to install the package bos_plus which can be done from the web ui as well.In the version number at the bottom of every page it says when its plus or not, also the graphic in the upper left corner of the web UI.

### Reply 8:
You know I was thinking about your heater idea and it came to me, why not make it a heater & air purifier! On the intake add a activated carbon pads(they look like green scrub pads but black and usually bigger) and maybe even a paper filter, one for a lawnmower should do not hepa grade but will get the small stuff. This idea may require some custom fabrication to hold the filters. Not sure how the fans would handle it. But its an idea. Thought I throw it out there. I ran across this post and now have a one board going myself Hopefully soon get solar implemented once I have all the pieces.

### Reply 9:
Those are some really impressive numbers! I bought my first s9 13.5 a week or so ago and loaded up braiins+. Im strapped on how much power i can use here so I opted to run one board. The auto tuning process has it at 7.94v/ 617MHz/ 4.4Th/s @ 383 appro<rest of thread truncated>
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14582,"Date: 2012-07
Topic: What happened to all of the coins in old""lost"" wallets?
### Original post:
Back when BTC was young, I know I had an old wallet on an old computer and didn't backup/save anything. The BTC payouts were much larger years ago and I'm sure this scenario happened to people with ""large"" BTC wallets.Just curious...

### Reply 1:
They are lost. Forever...

### Reply 2:
Or at least until someone breaks double sha256.

### Reply 3:
I wouldn't hold my breath

### Reply 4:
That's disappointing... There should be a way to ""somehow"" gain access to idle wallets. Reward the miners somehow... Maybe once all bitcoins are... ""mined"".

### Reply 5:
There have been many discussions of this and they all end with the issue of people having cold storage wallets and cold coins. Go check the dev section of these forums -> <link>

### Reply 6:
Right, how do you know it's a lost wallet versus a wallet in cold storage. I'd like to know what the current $ value of all lost coins is...huge.

### Reply 7:
Quantum computers might crack it some day.

### Reply 8:
When our colonies on Mars rebel and overthrow us, they can come here and ""crack"" our old wallets and use the BTC. It'd be like a reverse stealing of the gold from the New World back in the day. Sort of.

### Reply 9:
ECDSA is what allows spending. SHA256^2 prevents double spending.-bgc

### Reply 10:
Now that would make for some juicy story additions to a good sci-fi movie.

### Reply 11:
Ah true.I actually meant to say breaks sha256 and ripemd-160. An attacker could maybe reverse a key from an address then, right? I also should have put a because I highly doubt this will happen.

### Reply 12:
i would hunt down that hard drive and hope i could recover the wallet (or at least some private keys)

### Reply 13:
I came here to say this too, there seem to be a lot of posts that are more ""newbie-related"" seeping out of the Newbie forum for some reason in the last couple months.

### Reply 14:
I'm curious if SHA256 collisions would allow us to potentially recover lost coins (or steal them...)?I understand it is infeasible with current computing power, but quantum computing promises to effectively half the keylength.

### Reply 15:
The point is that if with quantum computing you're able to recover so called lost coins, you're also able to steal ALL coins.There's simply no difference between lost and non-lost coins, any lost coin recovery attemp would be the end of Bitcoin as a whole.

### Reply 16:
aye, the one thing bitcoin has going for it there is that we are able to bump the new priv keys up to 512bit, 1024bit, etc etc. This would require anyone with coins still sitting in an old 256bit addy to move them to a new one to get that security though.

### Reply 17:
Yeah, that would be possible, it would also require anyone who owns physical bitcoins (e.g. Cascasius) to destroy and re-digitalize them. There will probably be millions of coins stolen in the meantime, what would make todays thefts look like peanuts.But at least the system might survive.

### Reply 18:
The lost bitcoins would be sitting in addresses which would not have been ""upgraded"". It might be possible we take advantage of this vulnerability to recover ""lost"" bitcoins. If ASICs in the future are in the range of $/TH and the block reward is low enough, it might make sense for miners to attempt to ""crack"" these vulnerable addresses and release the stagnant coins instead of mining new coins.

### Reply 19:
You would hope if the old address, even if cold storage had real owners any more they would be still keeping up on Bitcoins and if smart would not only move their cold storage BTC to a new regular addy periodicly to help avoid that but would surely get their ass in gear to move to new 512bit addy asap if it was implemented because of the potential for new tech to greatly reduce the collision time.

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10445,"Date: 2017-08
Topic: Bitmain.com Maintenance something is going on...
### Original post:
Hello,Thougt someone is interested. I think there will go something online today at bitmain .But check yourself.Did someone else get the password change when login?<link> ""Dear Sean,We are pleased to inform you that we will release a new batch of the Antminer S9 here at 5 PM on 23 August (GMT+8) !This new batch delivers a hash rate of 14 TH/s and an efficiency of 0.098 J/GH. Because of the high demand and the manufacturing period, shipping for this batch will start on a first paid, first ship basis after 20 November 2017. If we advance the shipment, we will notify you. ""

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22426,"Date: 2018-03
Topic: Noise, A handy chart
### Original post:
The noise issue is very annoying, especially for neighbors. I was doing some calcs for my neighbors then ended up with this chart I thought may benefit others. There will be differing opinions on this subject so I'll present my assumptions. I used the A-weighted Sound Pressure Level method to measure and calculate. The SPL scale is useful to determine how the human ear perceives sound. A-weighting aligns well with sounds under 45dB. I used that because while neighbors are outside to enjoy a quiet evening, ambient noise is likely around below that level so that's the relevant area. And my city uses this scale despite that fact their limit is really in the B-weighting range. It's clear they did not have a qualified consultant help them to write the ordinance. My local code limits noise to 55dBA but they are unclear how, or where they measure. Since they didn't specify, I'm guessing they will measure at my property line. This leaves me vulnerable to fines based on the opinion of whomever shows up to measure. I measured one of my S9s to be 73dBA at 1 foot. Sound energy, like all unfocused energy, dissipates spherically in all directions equally. When this is measured linearly, like fro<rest of post truncated>

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22796,"Date: 2018-11
Topic: Bitfury B8 firmware
### Original post:
Does anyone know where I can find the firmware for the Bitfury B8 Server 50th. I have a few but the sd cards appear to be blank.

### Reply 1:
I would ask the company who sold those B8s.

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10409,"Date: 2017-08
Topic: S9 hardware errors + discarded ???
### Original post:
hi all!I received my S9 13.5T and have it up and running for a day now, however I'm puzzled by two things in the GUI. See screenshot...I see HW errors on all three boards, with one board having way more errors than the others. Also, I see most of my work being discarded by the pool. Anybody else see this as well?I'd like to tune down the frequency a bit, but my miner seems to have the autotune firmware. Ideas?Thx!

### Reply 1:
I know it may look strange but those are actually both normal things to see. Some boards just have more hw errors than others in my experience, but overall its pretty meaningless. As far as the auto tune firmware goes you are just stuck with it. Some people have claimed that doing an IP reporter reset brings them back to older firmware but I have not been able to duplicate it myself.

### Reply 2:
Please tell me that's not really 30k fan speed!?

### Reply 3:
What is the status of this finally? any new model in the market?

### Reply 4:
I have had S9s report crazy fan speeds since I started with them. It is for sure not spinning at anything over 6000rpm as that is the limit of the motor.

### Reply 5:
fixed image.the hw errors are not much the % is tiny 0.0003% which means if you earn a btc by mining you would get 0.9997 btcif the hw read 0.0100 or more I would worrydiscards are nothing this is not any thing at all.what does the miner show on kano 12.5th? 13.0 th? as this is what you get paid by not the gui numbersthe fan is wrong try a software reboot it may go away

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22077,"Date: 2017-12
Topic: Slushpool payout stuck ""processing"" for 7 hours
### Original post:
My payout is confirmed and listed on their ""payout"" screen - but its been stuck in ""processing"" status for 7 hours.Why would this be? I tried resetting my wallet. I triple checked, quadruple checked the payout address. I was able to receive before on my prior address.Does your ""BTC Mining Fee"" rate selection affect pool payouts?Any ideas?

### Reply 1:
You should ask this on the slush thread, people there will have a better idea.

### Reply 2:
Can you point me to that? I can't seem to find it.

### Reply 3:
<link> you go

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9623,"Date: 2016-01
Topic: Modify S5 Antminer to watercooling
### Original post:
Watecooling Components:Modify S5 Antminer to Watercooling Miner Components include cover,waterblock and fans,you could order 8 hash boards from Bitmain,and assemble a watercooling S5 miner by yourself.

### Reply 1:
What other components are you providing to cool the roughly ~2KW? Same as C1 kit?

### Reply 2:
1 controller receives only signal from 4 hash boards. Do I need for this projekt two controllers ?

### Reply 3:
Thank you for the cool project and experiment! If you could, please mention that any hardware modification will void Bitmain Warranty Qualification, if you could....But, what about the 4 data cables and 1x 4 pin power cables for controller board? They need to do a longer or replace it.

### Reply 4:
Today I received SC-BC2 antiminner cooling kit <link> has a huge and quiet.One controller card works for me with 2 Antminer S5 ( together 4 blades )

### Reply 5:
This is an amazing mod!If anyone got one of these up & running can u please let me know??

### Reply 6:
I think so, the divider looks like you can attach a controller card to each side. I just don't get why it looks like there are 4 Ethernet openings between the fans (looks like they've upgraded to 140mm fans). I'm also curious what type of cooling kit will be offered? I don't think the C1 cooling kit will be enough to cool it. Or will it be the big kit and that will be enough to cool 2 of these?EDIT: I see now, 4 controller cards (do the other ports not work on the S5 controller card then, shouldn't you only need 2 of these with 4 S5's?), 2 on each side of the divider, equal to 4 S5's (8 blades/boards) or that was the original design, so yes it's probably one of the big radiator kits for each of these since it's 2400 watts.

### Reply 7:
Looks like this will need at least two 1300 G2 power supply, using all the PCIe connectors (4 single + 2 double connectors = 8 ) that come with it, on each side. With 2x 1600w power supply you may be able to add an additional S5 to the setup (=1200w x2 + 600w = 3000w), but will need to purchase a couple of extra PCIe single connector cables per power supply if you want to add the additional S5, by the way the T2 Titanium has been released). Hopefully it'll be enough to power the 8 additional fans and the pump also. Would have preferred the controller cards at the top with just 1 per side (=2) like the current S5, if it needed 4 then one facing each direction (front and back) may have been better if the lower board was slightly shorter and only half the length of the S5. I'm estimating that the kit and additional S2 big radiator kit will be about $300 plus shipping (4 watercooling blocks = @$100, cooling kit $120, enclosure, cables and 2 fans =@$60).Are these the same watercooling blocks that fit the S3/C1's with just a different screw hole location on one side of the watercooling block?

### Reply 8:
ANTS3 Water block <link> I received 4 pc. Screw holes location on both sides and it is compatible with the S5 hash boards.

### Reply 9:
Is there screw holes for both the S5 and the S3 on each side? The C1 has screw holes so that one board is facing upside down from the other, while the new kit shows the S5 boards both upright?

### Reply 10:
One side has a total of 20 screw holes. Exactly the same spot where the S5 20x screw holes is.C1 uses S3+ boards, only the data connector is soldered to the other side of the boards. The same 20x screw holes.

### Reply 11:
How is the noise of these things?I have 4 s5's with s3 fans on both sides, but it is still to loud for my girlfriend.Maby I can make them watercooled, I want to run them at 350 or 375.

### Reply 12:
If that is like a 2*c1 side by side, why not make 3*c1 side by side, also 1*c1 but with s5 blades, c2?!Also: it should be only 1 controller for al boards use 14cm fans! not the screaming 12cm from s5

### Reply 13:
OK, if the kit is reasonable, then I'll order a kit, but know that the shipping is really high to the U.S. (the big radiator kit along was more for shipping than the $120 price). I'd be interested to see if it can cool the 4 S5's enough to run them at 412.5M constantly (that should be about 1400w per side, so two 1600w power supplies should work well, that would be about, = about 1,350Gh/s x2 per side = 5,400GH/s)?

### Reply 14:
From 1 x C1 boards+ controller and 2 x S5 leftover parts I built air-cooled C1. In the same style as the S5 . The two pieces side by side, and only one has controller.

### Reply 15:
How about some kit for ant s4?

### Reply 16:
This would be a lot more attractive if Bitmain would ship bare boards.

### Reply 17:
You will also need the cables, screws and springs.

### Reply 18:
Screws and springs are easy enough to source, though they could include them. I would envision the cables being included in a kit consisting of a BBB, the controller board, four hashing boards and the needed cables. It's nonsensical to purchase the aircooling heatsink<rest of thread truncated>
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10356,"Date: 2017-07
Topic: CPU getting Restart in NiceHash,(sometime get Socket error) wht is it. help!
### Original post:
hi, im using nice hash, gpu working fine,but cpu not getting stable work in mining (nicehash) its getting dissapear or CPu mining restarting,i have testing my CPU for 4 days in prime 95 include overclocking, temperature was under control and There wasnt any error,CPU: i5 6600kGPU: 1070GTXMOBO: z170 gaming pro

### Reply 1:
This: <link> post your question here: <link>

### Reply 2:
If you are trying to mine Bitcoin forget it. BTC mining has been exclusively for ASIC-based hardware since late 2013.CPU/GPU is only for altcoins and this is the wrong section for that. This is BTC only.

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  {
    ""hardware_name"": ""z170 gaming pro"",
    ""hardware_is_owned"": true
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4086,"Date: 2012-05
Topic: Stratix IV 180k - Possibilities for Mining
### Original post:
No one has a guess? No one wants to think about it out loud?

### Reply 1:
Maybe get a few and see if you can get a bitstream running on them? It sounds interesting, but I doubt anyone has developed any firmware for them.

### Reply 2:
just a guess, but i think it should be possible to achive the same speed as on an stratix III 150k with less power consumptionstratix III is 65nmstratix IV is 40nmalso you have more space, it could be possible to fit an additional core into itbut the BFL is not open source afaikso there is development neededshort: 400mhs maybeEP3SL150 142.5KEP4SGX180 175,75023% more LEs

### Reply 3:
Although it's a good price it's still a large amount of money. I have no experience in board design or even in loading a bitstream so that makes it all the more difficult.FYI these are used so they will have to be reballed as well.

### Reply 4:
That's what i'm thinking. Also, wouldn't it run faster as well?

### Reply 5:
Maybe this will work better:I'm pledging 25 BTC(I will increase if necessary) for a board design for the Stratix IV 180k featuring usb and capable of mining(i assume all this really means is supplying adequate power). Maybe this will be the seed of open source Stratrix-based mining.The 25 BTC goes to the person that delivers the complete design. This design can be posted in the forum, I will not claim ownership. If they have help, the onus will be on then to distribute the BTC fairly. I don't think I will be able to manage dividing it between people fairly unless they all agree on the split. I will also deposit tips(.5 - 3btc) from a separate pot for insightful posts.I'm 100% serious about all of this. These stratix chips really seem like beasts considering how much BFL got out of them.If anyone has a better idea of how to crowd-source this, please let me know. I'm open towards structuring it in a different way.Edit: Moved to title post

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23542,"Date: 2021-04
Topic: F1 Cheetah miner loading forever
### Original post:
Hello, i have recently received my order of 6x 24TH F1 miners and ive ran into a problem, when ever i change the pool url to nicehash or poolin or any pool, the miner stays loading forever, i tried resetting it with no use...Any help would be greatly appreciated

### Reply 1:
How did you set up the pool did you just paste only a domain and port without ""stratum+tcp://"" it won't work without it but you set it properly it might be a software issue.Try to reflash or update the firmware of your miner it might be because of a corrupted program.All files and guides can be found here <link>

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23166,"Date: 2019-12
Topic: What to use on Linux Mint to monitor my farm.
### Original post:
I was using Windows 10 and Awesome Miner to monitor my Ant miners, but decided to swap to Linux Mint and run a full NODE. I have tried to run Awesome Miner using WINE with no success. I have Minera running on a Raspberry PI, but it only does reporting for local miners.Any Thoughts would be Appreciated.

### Reply 1:
Awesomeminer is the one of the best tool to monitor ASIC but the problem they don't support linux OS they have awesomeminer remote agent(Linux) but only support GPU mining rigs.Check minerstats it seems that they also support Linux OS to monitor your miners online they have free 5 devices to try. This is the only alternative for Awesomeminer.You can find their official thread from here <link>

### Reply 2:
Did you try this? rig-statsI also know someone using Zabbix with custom scripts for S9sYou can also use a virtual machine, Virtualbox or similar, install a minimal windows to only run your favorite app and nothing else.To make it work with wine you would need to find out what this program is expecting. Maybe you could get some help from the developer. There are many things in wine that don't work out of the box, but with a simple winetricks command you just add the component its expecting and then it works (ie: .NET, Visual C++, etc).Since there is no entry for ""Awesome Miner"" in the wine app database. this means you would need to find out by yourself (and make a new entry). Since this is a paid program ideally it should have a proper Linux port, but i guess there is no demand and Linux users use something else.You could try asking in the Awesome Miner thread to see if anyone is using it with wine and ask what components it needs.

### Reply 3:
No, it won't work awesomeminer is only build for windows Os except for awesomeminer remote agent for linux. Read this someone already ask it from here <link> is the best option if you are going to monitor them in linux.

### Reply 4:
Actually its not like that when you are talking wine. HagssFIN first needs to try again, today 4 years later wine has had many changes, its already v5 iirc. Second, he didn't try running it, its simply the installer that was failing. Sometimes people install it in a virtual machine and copy it out to see if wine can run it (recreating registry entries as needed, helps so sniff what the installer is actually doing). Third, if the dev cooperates, he can simply tell what components it uses/expects, ie. what was written with. In the event that this depends in a ""service"" (daemon), it gets complicated.An open source solution is always better, for subtle things like these.PS: The whole point of wine, is being able to run programs ""only build for windows Os""...

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23077,"Date: 2019-09
Topic: Problem With Avalon 851,852
### Original post:
Have you tried swapping the PSU? It looks like it might be something power related as hash unit one isn't getting the right voltage out, if it's not the PSU it's either the PMU or hashcard.

### Reply 1:
If the replace PSU doesn't work try to check the socket of ACU3 and your controller and maybe it's full of dirt/rust you just need to clean them and test it again. If your miner still under warranty much better to send them back to Avalon but if not, you can disassemble the unit to fully check if there is something burned parts in the hashboard or just clean the unit and maybe it is just because of dust.

### Reply 2:
Hi we have some Avalon851 and 852 , which recently 4 of them not working Incidentally , and hashboard not detectthese miners are NEW working about 1 - 3 monthThe following actions have been taken :1- Controller A9,A8 , has been changed2- ACU3 Cable and ACU3 Converter CHANGED3- Reinstall Firmware , and test with another POOLif anyone have more information please share with usthank youApi Log:Code:[Firmware Version] => Avalon Firmware for avalon8 - 20190416 luci: b9dea8e cgminer: 4c2e56a cgminer-packages: bff9628Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[67] MW[0 0 0 0] LW[0] MH[0 0 0 0] HW[0] DH[0.000%] Temp[26] TMax[26] Fan[1290] FanR[10%] Vi[1205 1205 1211 1211] Vo[310 3919 3895 3911] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] PLL3[0 0 0 0] GHSmm[0.00] WU[0.00] Freq[0.00] PG[14] Led[0] PM[1] ME[1 1 1 1] MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW3[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] TA[0] ECHU[131073 131073 131073 131073] ECMM[1] FAC0[0 8 8 8 8] OC[0] SF0[0 0 700 750] SF1[0 0 700 750] SF2[0 0 700 750] S<rest of post truncated>

### Reply 3:
Based on the log text, I think that you might have a problem with the first PMU board or the hash board.ECHU code 131072 is for ""CODE_HUFAILED. Reboot the unit, if it is not good then try to replace the HU"". HU stands for Hashing Unit = Hash board.Please check my guide for more details for troubleshooting <link>

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22816,"Date: 2018-11
Topic: Trouble upgrading to LPM firmware on S9 13.5 units
### Original post:
Hello friends,I'm having trouble updating the firmware of my Nov batch of S9 13.5 TH/s units . Every time I go to upload the LPM firmware <truncated> the page freezes as if it's beginning the process.. However after a short amount of time, the ASIC page is simply no longer frozen with no indication of what happened. Going back to my status page results in the below information indicating the update of course did not <truncated> <truncated> VersionLinux <truncated> #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017File System VersionFri Nov 17 17:37:49 CST 2017Logic <truncated> <truncated> Average0.47, 0.29, 0.23I've tried this on a couple different units with the same result. Has anyone else run into this before? I've searched around the forums and haven't found much to go on. Any help would be much appreciated. Thanks so much in advance!I'm reading that potentially flashing the ""650"" firmware first may help? Has anyone w/ the Nov batch of 13.5's tried this before? Thanks in advance

### Reply 1:
are you sure you have the S9 and not s9i or j?if you are certain that you have S9 then what you should do is flush it with the newest version ""the auto-freq"" and then flush the LPM.

### Reply 2:
Have you tried to flash it first to other firmware version before you update it to LPM firmware if not flash it first with other firmware and then do a factory reset (if you don't know how to do a factory reset you can follow the guide from here <link> after that upgrade it using the LPM firmware. Make sure the downloaded firmware is not corrupted and don't use any 3rd party application or IDM to download the firmware, use browser downloader instead.Note: LPM firmware doesn't work on some pools like slushpool based on what I heard. Always make sure that you have a back firmware first before you upgrade it to other firmware so that you can restore it back to original firmware.According to bitmain C5 control board is not supported with LPM firmware so make sure that the miner control board is not a C5 board.

### Reply 3:
Don't know if it would help - but my S9-13.5T I'm testing with before doing my others was on this firmware: <truncated> This is the next firmware up from the one on your machine now. Try flashing your miner to this current non-LPM firmware first. Then try flashing the LPM version. Another option would be to try to upgrade the firmware by using an SD card to boot the miner and then install the firmware from there. Check this thread: <link>

### Reply 4:
Very much appreciate the feedback, friends, thank you all. Our units are definitely not the i/j series as they did not exist when we ordered our batches during the insanity that was late 2017. We will make use of the 650 firmware suggested here in a couple short weeks and report back. Thanks again everyone. Stay safe out there

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12059,"Date: 2012-10
Topic: BFI_INT with ATI7970 on Linux
### Original post:
Hi,I'm trying to mine using:- phoenix 1.7.5- linux with kernel 3.4.0- fglrx 1:12-6+point-1- ATI7970I'm trying to run it with BFI_INT but it complains ""Failed to apply BFI_INT patch to kernel"".Any idea how to fix this?(without it, it seems that -k poclbm AGGRESSION=13is the most efficient: 595 MHash/s, but with loads of ""Warning: work queue empty, miner is idle"" unfortunately).

### Reply 1:
GCN does not have that instruction, AMD's OpenCL compiler does the proper thing.

### Reply 2:
Can you elaborate on that?I did not install a package with gcn in the name, only pyopencl and fglrx.

### Reply 3:
GCN is your hardware, 79xx.

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    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""fglrx 1:12-6+point-1"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""GCN"",
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16494,"Date: 2023-04
Topic: Which nodes and miners accept transactions fees below 1 sats/vbyte?
### Original post:
Can I ask you for information about nodes of miners which accept transaction fees below 1 sats/vbyte, please? I would like to test and send them such transactions (possibly 0 fees) that don't need to be confirmed urgently.

### Reply 1:
Better to use at least 1 sat/vbyte which is the lowest fee that miners are accepting. Mempool is congested and not going down below 3 to 5 sat/vbyte for long, make sure you also use a wallet that support RBF for you not to have frustration of your transaction not get confirmed over a long time.

### Reply 2:
Last time someone was looking the answer was none without talking to them 1st and setting something up with them.Is this something you can use testnet for? If you are just testing things that's what it's supposed to be done. If you want to do it all internally there is also regtest.-Dave

### Reply 3:
I might be wrong but I dont think it is done manually to specifically select a node for mining. The transaction is sent to memory pool and the nodes/miner picks it up automatically based on the highest transaction fee or if the memory pool gets less congested it could takes up everything in his data block. But just like Charles-Tim said the memory pool is a bit congested now and even if you might try to test it after 72 hours if the memory pool doesnt comes below the 1sat/vbytes then your transaction wont be mined could be reversed

### Reply 4:
Wrong. There is no rule saying a transaction would be dropped from the mempool after 72 hours. Note that a transaction with the fee rate of less than 1 sat/vbyte is considered as a non-standard transaction and would be rejected by the nodes. Therefore, if you make such a transaction, it can't enter the mempool of nodes at all.

### Reply 5:
I don't hear any nodes yet that accept below 1 sat but years ago I can send BTC with 0 fees.Have you tried to own a node instead and configure minRelayTxFee and set it to 0?That's the only way if no one here has a node with 0 TX fee.Do you mind sharing what is your purpose? Are you planning to scam someone? And give him/her a TXID as your proof? Or abuse some websites that accept transactions with 0 confirmation?I don't see any other purpose why you would like to make a transaction with 0 fees.

### Reply 6:
Yes. My node has been running with the configuration that allows 0 tx fees. The other 8-10 nodes (random ones) have different configuration and don't accept the transaction with a fee < 1 sat/vbyte.The purpose is not to lose sats on transactions. The comment is weak and mean.

### Reply 7:
You have to set the fee rate to 1 sat/vbyte or more and pay the transaction fee. Miners include transactions with zero fee only if that's their own transaction. Unless you are a miner (or you own a mining pool), there's no way to make such a transaction.

### Reply 8:
Correct. Generally this type of thing is done for accounting purposes to move around funds from one internal address you own to another related address you own. Perfect example is the rather large sums moved around by exchanges & pools.AFAIK, you have to use your own node to broadcast a 'real' tx to mainnet that has a usable fee attached to it and include your zero-fee tx with it to be sent to another address you own. For that matter, the 0-fee part can be payouts to multiple addresses - it's how most pools handle user payouts. The tx with fee does not have to be a big one, 0.0001 with appropriate fee attached would do it.As for No it isn't. It's a cold, factual and possibly valid assumption given that you have yet to give a reason for doing what you are asking about. It is highly unusual for a person to do. Many of us have been here for a decade or more and seen it all when it comes to scam plans...

### Reply 9:
Such information isn't available. The only way to find out is by connecting to known node (which accept incoming connection) and attempt to send transaction with fee rate lower than 1 sat/vbyte.In such case, wouldn't scammer ask for list of node which owned by blockexplorer and electrum server?

### Reply 10:
I guess the other question is why would a miner mine it for free?They are a business, running a mining pool and doing transactions for free is not a thing anymore.Might be an interesting business model for a miner. Allow people to create and fund and account so they can manually submit 0 fee transactions, and then charge them separately under 1 sat / vb so they can transmit them the next time the mempool is empty. So instead of empty space, they put out a block with a bunch of transactions that have ultra low fees that they had been paid for a while ago.-Dave

### Reply 11:
To clarify: the question is not about 0-fee transactions only, e.g. I am interested in 0.1 sat/vbyte too.Besides, miners don't mine for free nowadays. As a matter of fact, they get subsidy/block reward of 6.25 BTC (which ultimately comes from users/hodl<rest of thread truncated>
","[
  {
    ""hardware_name"": ""node"",
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  },
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    ""hardware_name"": ""mining pool"",
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]"
24177,"Date: 2023-10
Topic: looking for old R4 Firmware.
### Original post:
Hey there fellow Bitcoiners,So I recently acquired a storage unit, at auction, that while unpacking I found to contain a brand new, or VERY gently used Antminer R4. I've gotten it up and running but was wondering if anyone had any old versions of the R4 Firmware that were prior to the releases that have the Auto-Frequency only settings (Firmware currently on the machine is from 11/2018 and lacks the advanced settings tab). Friend of mine has several R4's that all have older firmware that allows the user to select the chip frequency from a drop-down list. I know after doing some research that these were known to have a high failure rate (reasons stemming from what I assume to be heat-related looking at the specifics of lots of documented failures) so my hope is to find someone who has the gzip archive as it is no longer available from Bitmain - I want to run this miner at the slowest possible core clocks and really use it as a space heater as the colder months are right around the corner here in the northeastern USA!. If anyone has that FW, or - if anyone knows how to enable the ""Advanced Settings"" tab in the newer R4 firmwares, any help would be greatly appreciated!.Little more inf<rest of post truncated>

","[
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]"
13967,"Date: 2011-05
Topic: What's best for Deepbit is best for Bitcoin
### Original post:
Observing now the hashrate distribution and knowing someone who sold their BTC because of the current distribution... it would seem in the best interests financially of both Deepbit miners and the Bitcoin economy as a whole if Deepbit were to branch out and 'de-monopolize'. I'm not sure exactly how these mining pools work. If Deepbit is using closed software which gives them an edge, I hope that their members have access to the code of that software... otherwise it is very damaging the the confidence of the entire BTC world and this will no doubt negatively effect the bottom line of the Deepbit miners.Perhaps I'm a non-technical noob, but please let me know why this disparity exists.

### Reply 1:
BTW, this is not genjix (I didn't realize I was signed into his account)

### Reply 2:
Possible way to help with this situation:<link>

### Reply 3:
So, who is this then, and why would you be logged into his account?

### Reply 4:
LOL what?

### Reply 5:
-----BEGIN PGP SIGNED MESSAGE-----Hash: SHA1Friend of mine. I logged onto his PC without telling him because my internet was acting up.-----BEGIN PGP <truncated> GnuPG v1.4.11 <truncated> PGP <truncated>

### Reply 6:
There is an incentive to not mine with deepbit.net (or any other pool) as it gets too big, particularly for the smaller miners.The pool is there to smooth out the variance. But if the pool is finding blocks too quickly then a smaller, proportional miner may not get that many shares of each short block found and variance starts to return again, and more luck is involved. If you go pay-per-share this is smoothed out but at the cost of 10% fee with deepbit.net.The smaller miners are better off with a pool that is finding blocks over a good period of time ... 1-2 hours, so that their share of the pool is well-represented and has had time to average out.I'm sure if someone is interested, there is some mathematics to be done here that will give you an optimum size of a pool to associate with (as percentage of total network) dependent upon on the miner's hash power (as percentage of the pool), in order to minimise variance .... if that is what you are after.Robust payments, low fees, info API's, and other bells 'n whistles maybe what you are looking for in a pool also.

### Reply 7:
Couldn't that ""short block variance"" be mitigated by calculating rewards/shares for multiple blocks instead of dividing them one by one? With a straight, proportional payout system it would simply mean that shares for blocks that are found in less than XX minutes are transferred to the next block.

### Reply 8:
Maybe, but you'd have to get a ""big"" pool operator to implement that ... it becomes quite a messy calculation of who's working harder on which particular block, who was luckier on which block, rolling averages over multiple blocks, time-depreciating share values to stop ""pool hopping"" attack, etc.Bottom line is, right now the little guys are losing out when a pool gets too big, their variance starts going up again.

### Reply 9:
Lucky there's at least 4 other smaller pools to pick from, 5 if slush is back up and stable.

### Reply 10:
I think you'll find you are false. You've discounted the granularity involved that the difficulty 1 share system of scoring is placing on the problem.The ultra short rounds that the big pools get more frequently are essential for reducing the variance but a small miner can easily have a big fat ""NONE"" sitting in the shares column from one of these rounds. Because they could not find a difficulty 1 share in the same time it took the pool to find the block, they have no way to participate in the pool's mechanism for reducing variance for these ultra short rounds. It is the ultra-short rounds that have a large effect in bringing the variance back in the miners favour. Otherwise they are only toiling away on the longer blocks and not sharing in the ultra-short ones where they can 'make up' lots of lost time.

### Reply 11:
Actually he is right.Yes, a slow miner will see some ""None""'s for short blocks, but sometimes he will hit such block too and it will be balanced out.I am sure about this.

### Reply 12:
But can he ever make up for the 0.5 or 0.75 of a share, i.e. the partial share that he should have got for the ultra-short round?Maybe it will be balanced out, eventually. The bigger question is how long will it take to make back the losses on a bad run? In other words, what is the ultra-short block variance for a small miner?Remember the primary idea of the pool is to reduce the variance for a smaller miner

### Reply 13:
I've spent a lot of time pondering variance of pool payouts. I don't think I'm wrong. All my calculations work on the share level and I definitely did not disregard share granularity. I can bring out the heavy-duty math if you'd like, but the calculations involved are very easy to understand (if you know a bit about Poisson processes) yet very<rest of thread truncated>
",[]
23160,"Date: 2019-12
Topic: Question about upgrading my Antminer S9s
### Original post:
Hey y'all - been learning a lot on this forum, so thanks for the help!I currently have a bit over 50 Antminer S9 miners running on 15 Tripp lite 30 amp PDUs. I have 4 S9s running on each PDU and a couple of L3s running to make up the difference in slots. Can't quite get 12 running on a 100 amp box. But I can squeeze in 11.Each PDU is on a 100 amp box on its' own 20 amp circuit. Total of 500 amps for 15 PDUs. I have an average of about 750TH.I am planning on upgrading in the next few months with the halving coming up in May and I'm trying to figure out what mining rig would be the best to upgrade to maximize the power and slots that I currently have.I was thinking of upgrading to the Innosilicon T2T 30th, but I think they are 10 amps each, and that means I can only put 1 or 2 on each PDU correct?If I can put 2 on each PDU then that means I'd have a total of 900TH, which is a bit more than my 750, so that would be worth it. But if a PDU can only handle 1, then it would only be 450th and that would be a downgrade.So I guess I'm trying to figure out what mining rig will give me more TH but with less rigs. I plan on selling all 50+ Antminer S9s to try and pay for some of the upgrade.Any<rest of post truncated>

### Reply 1:
Man you are in a sweet kind of tough spot lol. Might I suggest moving this topic over to Mining Speculation - Can be done from the lower left of the screen at the bottom of the topic by you -. There will be a more knowledgeable and engaging group there that can give you some decent insights.Not sure how much research you've done on what's out there but here's a fairly maintained list of Current List of Competitive Hardware - October 2019 It's missing the Canaan 1066 I see has a review done. I also haven't kept pricing that up to date as it has been changing every other week it seems for some.On to your situation, I'm guessing you have a cheap stable price for power if you are already running 50 S9'S plus extras profitably. Sounds like you want to be in this for the long haul. So my best suggestion as you are in the US, is go with something Bitmain. I read they are starting to use a plant outside China to build gear that ships to the US, this avoids the massive tariff currently being applied. There really just isn't any getting around the savings of 25% tax upfront. More to the point they have also been dropping the prices significantly from time to time. Though I think some people <rest of post truncated>

### Reply 2:
Thanks for the tip, I just moved it over!And thanks for the info, to answer your question, yes I have super cheap electric, it might as well be free. So my S9s are profitable for sure. Yup, you're right also, my main factor in making a decision is on budget. I don't have a ton to spend, definitely not that 37k you mentioned. That's why I was thinking of the 30th rigs, since they are around 500 each. And I figured if I waited until March to upgrade, I can maybe get them even cheaper, or even wait til' the halving takes place and buy them even cheaper, I was thinking maybe even 200-300 a piece.Also how do you figure out how many rigs I can put per PDU? The S9s I figured out by trial and error, and also some math from my electrician. We determined I can put 4 S9s per PDU in most cases.Yes, I plan to go for the long haul, at least a few years mining with the next upgrade I make. I can probably only afford about 15k (including the profits from the sale of my S9s). So I am trying to figure out what rig I'll be able to buy to fill my slots for that much, as well as what makes sense for the power I have. And of course how many of that rig I should buy. A friend of mine told me that I could<rest of post truncated>

### Reply 3:
What voltage is your electrical service? 240V? 208 3 phase?Are you sure each PDU is on a 20A circuit? Doesn't seem like you could run 4 S9s on a single 20A circuit. With new firmware running 1250W per S9 you'd be pulling close to 21A at 240V. Keep in mind that for continuous loads you shouldn't exceed 80% of the circuit capacity, so a 20A circuit maxes out at 16A continuous usage. Did you mean 30A circuit?I guess it could work if you are running 208 3 phase to the PDUs.

### Reply 4:
This is what I mean when I say I'm not great with the numbers So the easiest way I can explain it, for example, in one room I have a 200 amp box with 6 20amp fuse switches (breaker switches?) and each switch has a PDU hardwired directly to it. And each of those PDUs is running 4 x S9s on ""low power mode"". Been running these for months with no issues.I'm running these on standard residential 200amp or 100amp boxes and yes at 240V.

### Reply 5:
In that case, I'd be concerned ... you are sure those are 20A breakers and not 30A? And you're running just normal ""low power"" and not ""enhanced low power""?Just because it has worked for a few months doesn't mean it's not a fire hazard...If they are 20A 240 circuit<rest of thread truncated>
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    ""hardware_name"": ""Tripp lite 30 amp PDUs"",
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    ""hardware_name"": ""Innosilicon T2T 30th"",
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16205,"Date: 2022-02
Topic: What does PCB stand for in miner operating temperature range?
### Original post:
I am new to mining. Can someone tell me what PCB stand for in this table (Miner normal operating temperature range):<link>

### Reply 1:
That should be self-explanatory: Printed Circuit Board.They are talking about the maximum temperature the PCB is rated to be able safely operate at.

### Reply 2:
It's a temp of the PCB or the hashboard and the ASIC chip itself has its own temp sensor. You can use that link as your reference you can find the PCB temp under the miner status. And this is the sample image belowTemp(PCB) this must be what you talking about. It has a 4 PCB temp sensor as you can see from the image above. Those sensors are under the heat sink look at the image below

### Reply 3:
Thanks for the explanation. So what would be a safe ambient temperature for the miners? In summer when temperature rises to 90+ Fahrenheit how do you keep the miners from overheating?My friend and I are planning to run some S19 Pro Antminer in his home in Houston, TX. Right now the weather is good for cooling, but in summer the temperature can reach 100+ Fahrenheit, I assume we must install some AC to cool them down? We plan to have up to 10 units in a shed. Do you think running an AC is sufficient?

### Reply 4:
Just keep monitoring your miner and keep your miner lower than the recommended PCB temp according to the link you provided above. S19 pro has PCB max. 80c more than that it could melt or damage some parts or ASIC chips.If you can afford to pay much for Electricity you can install AC but actually, for me, it's not necessary to buy AC if you want to cool them down you should set up your room with proper room airflow you must have an intake fan(Air from outside) then exhaust(to exhaust hot air) you can also separate them hot and cold air you can check the link below as a sample.- <link>

### Reply 5:
80C is a very high degree to reach, so am I correct to assume that with proper air circulation, you can keep you miners running even in summer when the temperature reaches 38-40C (100-104K)?

### Reply 6:
Yes, that's what they published in their specifications for the original S9, for the modern miners like the S19 they lowered the max ambient temp to 35C.What you need to do in summer is move that air. 200~250CFM for S9s and 400~500CFM for the others. And when i mean move, it means fresh air from the outside, into the miners, and then to outside again, without mixing. You can (and should) take advantage of the typical wind direction in your place.I have seen the S9s work with 40C ambient temp just fine. Hundreds of them.

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    ""hardware_name"": ""hashboard"",
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    ""hardware_name"": ""ASIC chip"",
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    ""hardware_name"": ""S9"",
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10305,"Date: 2017-05
Topic: ~
### Original post:
You really make yourself look bad with comments like this. Profitability is a conditional thing, just because you dont know how to make a profit doesnt mean other people are in the same boat. Do a little research.A 12.5th S9 at $0.10/kwh power currently makes ~$250 in profit a month. At $0.16/kwh you are making ~$180. If you cant profit with an S9 you should seriously think about exiting the crypto mining space completely.P.S. The s9 comes with a 180 day warranty and has for close to 6 months now....

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]"
15796,"Date: 2016-08
Topic: MOVED: Silent miner - 50-100 infection per day
### Original post:
This topic has been moved to Trashcan.Reason: Illegal.

",[]
15834,"Date: 2016-11
Topic: How to mine using Laptop?
### Original post:
Hi guys, I am trying to earn bitcoin using my laptop, I saw many people are trying mine here, can I ask if how can I start mining using my laptop? Is that dangerous to use laptop for it? Is there any software that I can install to start mining using my laptop?Any suggestion there on how to mine? Anything that I can use with my laptop?

### Reply 1:
I wouldn't mine with a laptop. They're more expensive than desktop PC with same specs, breaks quickly, and most likely wouldn't generate enough <truncated> don't mine bitcoin with laptop or PC at all.What I said above is for altcoin. My brain automatically switched the word bitcoin in your post with altcoin. Mining bitcoin with PC/Laptop is unthinkable.

### Reply 2:
Is it dangerous? A bit yes. Your computer will use-off much faster because of high load on gpu, cpu or both. Is it profitable? No it is absolutely not profitable to mine with ordinary laptop computers.You will get better results on faucets... so go figure.Besides those kind of questions where asked before, answered before many, many times.Please learn how to use google to search through bitcointalk. My suggestion: If you can't afford real ASCII miner machine, stay away from miningin case you just want to experience ""mining"" try but be advised: <link>

### Reply 3:
Better try faucets it's more profitable than mining bitcoin in a laptop/desktop. Possible scenario:1. Your laptop/desktop will overheat/ your graphic card will overheat2. Some software got some keylogger on it be cautious.3. Some software is false software. It said that you are mining but it is an air mining you are not mining and the number of sats mined is a lie.4. Some software got some malware that can affect your pc.5. Electrical cost is more expensive than you mined on bitcoin. Your profit can't cover the electricity bills at your home.So i prefer you try faucet and also sig campaign in this community. But if you want to experience mining then check this site (<link> *permission to post this link*

### Reply 4:
i don't recommended for mining with your laptop because your laptop is going to be so heat and this can burn the all inside of your laptop but if you have more money, better you buy hardware for mining so you can continue to mining and you don't have to risk your laptop. however, its still not profitable when you only mining with your laptop.

### Reply 5:
The question was already answered. Locking thread to prevent sigspammers from saying the same thing over and over to increase their post counts.

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21080,"Date: 2016-06
Topic: WIFI on raspberry Pi for Avalon 6 miner or wifi bridge
### Original post:
I want to be able to add wifi to the raspberry Pi that runs my Avalon 6 ORUse a spare raspberry Pi to make a wifi bridge Wifi on dongle, use the Ethernet out to a switch to minersI want to do this as miners are not practical in my living room with the router.Need to have in spare room or garage.

### Reply 1:
Wifi on a Raspberry Pi is fairly straightforward. Just obtain a wireless dongle (Adafruit.com sells them and accepts Bitcoin if you're in one of the countries they ship to) and configure the Pi to connect to the network. Since the Pi runs openwrt you can use these instructions. Please let us know if you have any trouble.

### Reply 2:
ok i have not been able to add wifi with a wifi dongle for avalon 6but i have got a wifi extender from netgear that is working fine<link>

### Reply 3:
Some wifi chipsets are plug and play some are not., check your stick here<link>

### Reply 4:
I've used this dongle for the past months with my RPi and it works fine <link> not the fastest but it is really cheap and easy to set up.

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  },
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    ""hardware_name"": ""wifi dongle"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""wifi extender from netgear"",
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21865,"Date: 2017-11
Topic: Tutorials
### Original post:
How can a newbie get started with mining?

### Reply 1:
You must know the deviceBecause before doing that much you have to understand about the device

### Reply 2:
1. Get a mining program for your computer, 2. Understand the basics mining,3. You will need a mining client to run on your computer,4. Control and monitor your mining rig,5. You will need to find the right software.

### Reply 3:
After you have done all of the above and mining clients are working perfectly what's next?I see one of my workers have 2,348 accepted - what does that mean? How does that get converted into Bitcoins in my account?

### Reply 4:
To get started you should read the threads in the hardware section. This will help you figure out what hardware toy want. Then use Google to find some articles to give you the basics, and also read the beginners section here in the forum From there figure out your electricity costs, and see if it will be profitable for you to mine.If you have the electrical and physical space, wherever you want to set up. Buy a miner whichever one you can afford and has the potential to turn a profit.Then pick a pool to mine with and go from there. Once you get past the should I buy one point the forums are a great resource for info.

### Reply 5:
guys..since its getting more and more difficult to mine its still worth it building gpu mining rigs at this time ?thx

### Reply 6:
You can build GPU rigs for alt coin mining. For information on this you need to post and read in the alt coin section.You can only mine bitcoin with Asic machines.

### Reply 7:
Buying some ASIC mining off course (I suggest Antminer s9). And also, you need to knows basic knowledge about cryptocurrency and mining itself. After all, experience is a best teacher. So, learning by doing is the best way.

### Reply 8:
First, all you need to do before buying some rig or install any program is understand what is bitcoin and how it works. If you understand about this technology then you'll never ask this question. When you wish to start mining it's a sign that you understand it needs a basic knowledge of computer programming language.

### Reply 9:
Basically, to be a miner, doesn't need basic knowledge of computer programming language. but yes, if we knows basic knowledge of computer programming language, it will help us more easier to understand mining process.

### Reply 10:
I am computer science international certified guy. I think you are making shit post still you are looking only to make more. your post simply symbolize that only not a other things. If you know what is bitcoin and earning options in bitcoin also will never allow you to do the mining setup by own.Until you tried it by own you will never knows the how the set up and mining process is moving forward.

### Reply 11:
Wow the professor is coming. So you think I am making a shit post? And what about you? You're making a god damn beautiful greatest ever post here? There's nothing wrong with my sentence. This is how's the forum works, you discuss anything and share your thoughts.What I said is you will need a basic knowledge of bitcoin and computer before start buy some mining rig or you'll die with regret because you can't setup your $3000 hardware.

### Reply 12:
What software can you recommend for us?

### Reply 13:
Depends on which coin you want to mine. If you want to mine Bitcoin, it is only directly mined via ASIC miners.If you want to mine via CPU or GPU, go to the altcoin section. This is the Bitcoin only section and we have long since left CPUs and GPUs behind.

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9652,"Date: 2016-01
Topic: Antminer: S5 fan verus S3 fans
### Original post:
HelloGenerally speaking, are the fans on S5 and S3 the same?With an S5 the fan at 3,000 is probably 10 times the sound of the two fans on the S3 running at the same speed. But they are running at the same RPM.

### Reply 1:
No its the same size but its a different design and S5 fan is MUCH louder.

### Reply 2:
Interesting. From: <link> is Bitmain selling a fan for all versions? If purchased, would you expect this fan to be louder on the S3, or to just run at much lower RPM?Is Bitmain selling a single fan to be used on both S3 / S5?

### Reply 3:
The S3 had 2 of the quieter fans and the S5 just has 1 loud fan to move more air. Either will work with the S3

### Reply 4:
Naw, the S3 fan at high speed have a very loud noise as well, its just that the S3 did not run them at full speed. When ran at similar RPM they have similar noise level, but the S3 get a higher pitch faster.I think the S5 fan simply can reach higher RPM, so if the RPM of the ""global fan"" is set properly, there will be no noise issue.

### Reply 5:
Here there is an S3 running two fans, 1@4000RPM, 2@2000RPM, and it is very quiet. Nearly silent.And then there is an S5 running one fan @3400RPM and it is 10 times louder at least. To get to a similar loudness with S5 requires going down to around 1600-2000RPM

### Reply 6:
My S1 and S3 fans must be different then, because at 3000RPM they sound like a heavy drill, and the S5 fans run at the minimum speed, which is 2400RPM are quieter, through not by much, but the noise is a much lower pitch, so more bearable imo.

### Reply 7:
The S5 fan at min speed makes more noise then the S3 fan at like 3000 rpm even. Its probably because of that directional mesh in the back.

### Reply 8:
Okay so apparently the S3 fan@4000RPM is actually the fan from this post: <link> (Delta AFC1212DE 120mm x 38mm).So this fan is basically noiseless at this speed then whereas the stock S3 fan would be making as much noise as the stock S5 at that speed. Unfortunately, as from the post above, the Delta AFC1212DE does not want to run with the S5. Fortunately there is another S3 here and another AFC1212DE that will go nicely together once the 4-pin fan header splitter comes in the mail on Monday . (The splitter will bypass the front fan port which is burned out.) Too bad both fans will be on the back header and the back appears to get less RPM than the front (4000RPM versus 2000RPM on another S3 that is here).

### Reply 9:
I made my own board to run 2 (S5) fans from one fan-header. This is my prototype of it. It's with own power-connector.

### Reply 10:
Well done.However there is an easier way.Use a breakboard and power your fans from the board.

### Reply 11:
I use 4 fans with one controller (for two miners) and don't want to overload controller. That's why I did this.

### Reply 12:
Could it be detrimental to run two fans on the same header?

### Reply 13:
Stock fans are power hungry, I don't want to try split power for two fans from one header. I take only pwm-signal from header, feed it to two fans and they have their own pci-e power-connector. And speed signal returns from fan1. Common grounds with all headers ofcourse. It's easily done with a couple of smd resistors and caps + 1 diode and electrolytic condensator. No fear to burn controller (this regards S5) or header. Cable that feeds power to the controller can't handle much current. I copied original circuit from S3 (same circuit is used in S5) and modified it a little bit.

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  {
    ""hardware_name"": ""pci-e power-connector"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""smd resistors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""caps"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1 diode"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""electrolytic condensator"",
    ""hardware_is_owned"": true
  }
]"
14227,"Date: 2011-06
Topic: XFX 5830 @ 280Mhash/s, can I get more out of it?
### Original post:
I get 280Mh/s on my 5830 using only a 970 Mhz OCpoclbm with flags -v -w 128I hear you're supposed to get more with Phoenix, so maybe you're doing something wrong.Also, you could try mining in Linux, I hear that helps.

### Reply 1:
Getting 295 out of my sapphire 5830 @ 981/327 on Slush using poclbm 4/28-v VECTORS BFI_INT FASTLOOP=false AGGRESSION=12 WORKSIZE=256

### Reply 2:
add ""worksize=256"" and maybe try ""phatk"" kernel

### Reply 3:
You might get more out of a linux install running hashkill or phoenix. The difference is fairly negligible at this point though.

### Reply 4:
yeah just finally switched to phoenix + phatk and now getting 307 out of my 5830 @ 990/330.with identical flags as beforepoclbm - 295phatk - 307

### Reply 5:
975/300 (-v -w128 -f0) f0 really makes a 1% diff i think (not sure tho)running GUIminer, getting 289 mhash/s I have four of these running

### Reply 6:
Hi guys, I have a few saphire 5830s poclbm -v -w256 but only getting 222Mhash/s. Do you no of any good tutorials on <truncated> memory tutorials? Also I know people are adjusting their fan speed, but I don't understand if they are raising the speed to increase cooling or lowering the fan speed to decrease power consumtion. Any help would be much appreciated.

### Reply 7:
Read my tutorial here:<link> your -w256 to -w128If ts the sapphire card, you need to set it to 950 core clock/600 mem clock, i have my fan manually set to 80%After you follow instructions and set what I just said above, close msi afterburner and reopen it.Then drop your MEM clock to 330-340 (pref 340) and make sure you see no artifacts on your screen or buzzing anywhere.You should get 288 mhash/s - just make sure to keep the card cool (hence why I have it at 80%runs 64-68 celcius which is fine.

### Reply 8:
Thanks innervisi0nn for the quick response. I'm running linux. Linuxcoin live to be specific. Any advice? What are you keeping your temps at?

### Reply 9:
Sorry not running Linux. I can keep 60 celcius if I have my home fan on it, if not, its about 65-68 celcius with stock fans + 2 extra 140mm fans at 80%

### Reply 10:
I've got my 5830's up to about 320 Mhash/s each... That's around 1025/320 and 80% fan I think, no voltmods only RBE. 280 is right around where they are naturally stable, takes a fair bit of babysitting to get over 1000.

### Reply 11:
thanks guys, I'm gonna dig into the RBE tutorial this weekend

### Reply 12:
That is quite impressive. Glad you bumped you thread.Going to try phatk any time soon?

### Reply 13:
sorry for the noob questions, but can someone tell me what the ""1025/320"" numbers are and why lowering the memory clock would increase the hash speed?

### Reply 14:
thats 1025MHz gpu core clock and 320MHz mem clock. lower mem clock helps to keep temps down enabling to bump up core clock

### Reply 15:
thank you so much for clearing that up.

### Reply 16:
how hot are the cards running?

### Reply 17:
Bottom one runs around 80c (hotter than I'd like, need to get a mobo that allows better spacing). Top one hovers around 70c generally. Am thinking of investing in an improved cooling / power / mobo solution rather than just a random desktop I had lying about.

### Reply 18:
why you guys underclock the gpu memory?

### Reply 19:
energy, more hashes, makes up for overclocking

### Reply 20:
I've speculated in the main memory lowering thread that performance increases due to either clock dividers or latencies.Brings back memories of the old p35/p45 chipsets overclocking days, where sometimes 450 MHz FSB would be faster than 500 MHz.

### Reply 21:
Thank you all for the comments. I have been able to get over 300 Mhash/sec!!I now have two 5830's.I tried running both of them with two separate instances of phoenix miner and I had some major issues with the monitor that was hooked up to the new card getting bars across the screen and locking up my system.Both of my phoenix settings are as follows:-k poclbm Device=0(1 for the second card) BFI_INT fastloop=false Aggression=12 Worksize=256These are both running off of separate copies of phoenix in different directories.My overclock is as follows as well for both cards:GPU: 985MhzRAM: 250Mhz or 500Mhz depending on how MSI Afterburner is workingFan Speed: 75%Temps are around 61-64 degrees Celsius. So after I had that problem I decided to go back to GUIMiner until I can spend more time on getting phoenix to work on both cards.In GUIMiner I'm getting about 250-285Mhash/sec but sometimes I notice that the second card goes down to as little as 5-20Mhash/sec for as long as a few minutes.I am using the -v -w 256 flags in GUIMiner and I am mining at btcguild.I was really hoping to be able to get 300Mhash/sec out of each card with everything being stable but I don't know if that's reasonable.<rest of post truncated>

### Reply 22:
When you use MSI Afterburner, in settings, are the cards setup to be synced? Theres a little<rest of thread truncated>
","[
  {
    ""hardware_name"": ""5830"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sapphire 5830"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""linux install"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""phoenix"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GUIminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""saphire 5830s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""msi afterburner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Linuxcoin live"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""home fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""stock fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""140mm fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RBE"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""phatk"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mobo"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""random desktop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""main memory"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""p35/p45 chipsets"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""phoenix miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MSI Afterburner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""btcguild"",
    ""hardware_is_owned"": false
  }
]"
16037,"Date: 2019-08
Topic: Mining in South American and Central Asian countries
### Original post:
Here in Brazil there are some people who pay a fixed rate of energy, especially for those who live in more isolated places but because the available power is not so high, it is not possible to create a large mining farm. As the energy tariff here has been very expensive in recent years for those who produce photovoltaic energy prefers to sell to the utility than to mine. The choice of many people is to really mine in Paraguay where the tariff is very low, but there are reports here that there is already a government crackdown on the country's miners.

### Reply 1:
I cant speak for anyone else but there are some serious challenges when trying to build something like this in a country you are not from. You dont understand laws, customs, or anything of that nature where you are going. You dont speak the language so a proper labor force and contact with contractors can be a pain. Trusting your multi million dollar facility in the hands of locals is a scary proposition, and living down there or spending massive amounts of time down to secure the facility would be pretty terrible considering the distances involved. There are obviously a number of other socioeconomic issues to deal with as well.For example id shy away from ANY and ALL soviet bloc countries such as Uzbekistan based on the current political climate and the issues we have in the US with Russia right now. I would also stay away from South America as a general rule because of the massive amounts of corruption, struggle, and strife South America seems to constantly have. The US border crisis is in no small part due to the mass exodus of people in South America trying to come up this way through Mexico.

### Reply 2:
I have noticed there is very little discussion on (and in fact relatively few) mines operating in many regions where the discussion should be wide-open.Paraguay is building the largest mine ever.<link> charges no tax on crypto, and among the lowest energy costs around.Here is a list of Bitcoin legality by Country:<link> are some national average electricity prices:<link> is working on a project outside USA, Canada, China, the usual places these English posts seem to focus on?For those with experience, what kinds of challenges have you faced setting up mines outside your country?

### Reply 3:
A 'crackdown' in paraguay?? Isn't it legal? I assume such since the government is helping coordinate the building of the biggest mining operation ever according to that article above.The average tech blogger isn't going to setup shop down there for sure because electricity is cheap... However... <link> Banana is a Swiss company. I'm confident starting big businesses in developing countries happens.Granted, they have been forced to fund cartels before, they still manage to pull quite a profit since all that has blown over. The point is entrepreneurs are ready to take risks. Making fortunes is not easy however you cut it. I'm not suggesting some Montreal trader drop everything, move to S.A. and learn spanish... There are very, very, truly rich South Americans and Uzbekistanis (probably some that speak English), or there must be other non-local people with some experience there and some in crypto.I'm hoping to draw some of the locals out of the woodwork and get their two cents.

### Reply 4:
Governments, in general, do not miss the opportunity to cash in on anything that makes a profit. They make up any kind of excuse to guarantee a share of the profit.

### Reply 5:
You were asking about people with experience setting mines up in other countries which I have. I am not quite sure where you were going with the Chiquita link exactly. Its headquarters are in the UK and the US (also the company was teh successor of another american company, it is not of swiss origin, it just happens their international headquarters are located there). Of course they have south american ties since that is where the fruit that they trade in is grown and sold. This is also a billion dollar company with 20k+ employees. I dont see how you can comepare this to an entrepreneur trying to start a business in an unregulated country in an unregulated industry based in a country they know nothing about.Obviously there are wealthy people everywhere from doing any number of thousands of different things, that does not mean that anyone starting a business in that general area is going to make it big. Also it is a little concerning how you brush aside the fact that they had to fund terrorist organizations to survive off as just part of doing business. As recently as last year it has been proven they still fund terrorists down there....which is why in my original response to you I <rest of post truncated>

### Reply 6:
This is difficult to explain because in most of the world there is such thing as the rule of law. But current Venezuela is different. Think wild west or medieval justice. You ""could"" do <rest of thread truncated>
",[]
10877,"Date: 2020-03
Topic: [ANN] Avalon ASIC Batch #2 Sales Update (Last Updated 2013-02-04 00:28 EST)
### Original post:
Also still waiting on a response to my support ticket

### Reply 1:
I am waiting as well after having sent the complete amount yesterday. Keep in mind, though, that Yifu is probably working on this alone and has to deal with EVERYTHING surrounding this operation, so he's probably under a lot of pressure.

### Reply 2:
@ Bittenbob - my coins haven't yet moved from the address to which I was directed send them. Is this normal?

### Reply 3:
Avalon Store Website saysStatus: Processing OrdersI would wait a day to get a confirmation email. If nothing by then contact support.Many people have not received emails yet. Including myself. However I do have receipts from Walletbit.

### Reply 4:
Anybody else who got a message today from WalletBit that his partial order could still be processed if I pay the full amount now?

### Reply 5:
my exp: submitted several orders without using a login, each had bad address information, created a login and completed checkout to walletbit who said $0.00 and i re-tried, and re-tried. submitted support request 24hrs ago, and 12hrs ago i decided to use my history link, replace the payment amount with the appropriate value, and threw caution to the wind! walletbit processed my order and gave me a receipt, which i promptly updated my support ticket with, but now after 24hrs from initial support request no response. I understand this issue is a fiasco, but a response would be nice!

### Reply 6:
My payment moved. I'm still waiting for a confirmation of my purchase. <link>

### Reply 7:
I was one who placed an order but walletbit showed .05 btc owed or whatever. I did not pay that because it was obviously wrong.I stopped there and waited for an announcement.24 hours after the opening sale I decided to open a ticket with walletbit and avalon.Walletbit basically responded back quickly enough saying they think my order was no longer valid by using the history URL to pay.Avalon has never bothered to respond back and my ticket says ""being processed"". So that is almost two full days since being opened.I have no idea what is going on. If this falls through I will probably start liquidating the gpus and stop mining.Based on my calculations the early asic owners make most of the money. By this time next year asics will bemaking what my gpus are currently making. A mad rush to the bottom.So yea.. I will lose the chance to double/triple my money but that is how things go.

### Reply 8:
I would sell-off your GPUs. They will be crushed soon.

### Reply 9:
While I agree the gpus will be useless soon... it remains to be seen just how long that will take. I have free electricity soI could probably keep them running longer then many others. But yea.. making 5-7 dollars a day will quickly be less and less.Part of me is sad I will not try out the asics and make a few bucks.. but another part of me knows it was not guaranteedeasy money if the timing of things do not line up correctly. It all depends on BFL screwing up to make good money withavalon asics. C'est la vie. Maybe avalon will respond to my ticket and tell me to send my btc. We shall see.

### Reply 10:
I'm keeping mine for vanity address mining. They've already paid for themselves, and I have good electrical rates. I don't see much point selling them into the glut that will be coming to ebay soon.

### Reply 11:
Ordered two on Sunday and am still waiting to receive any email confirmation or reply to my support ticket.

### Reply 12:
What was the last announcement from avalon about batch #2? Or maybe I should rephrase that. Has anyoneheard anything about anything? Like batch #2 sale was a success and we have your money bitches!?!

### Reply 13:
I don't think anyone's heard from either Avalon or Walletbit for the past day++.

### Reply 14:
<link>

### Reply 15:
Chill out everybody. Tracking your Bitcoins after sending them to a payment processor is pointless.This guy's are not anonymous, they really developed the product - so I don't believe it to be a con.It's just they are sitting on a high horse at the moment.

### Reply 16:
I would just like an answer to my ticket. Either way I would be happy. If they say no, fine. If they say yes, fine.I am also curious when batch #1 units will start to appear in users hands even though I did not order from that batch.I need to time selling my gpus on ebay ;-)I reckon the time it takes to type this reply.. they could also update people they took btc from in exchange for a product.That is just being considerate to folks.

### Reply 17:
I don't think it's a scam either. Why limit the scam to 900K when everyone is rushing with more?They are either trying to rush next delivery or drunk somewhere.

### Reply 18:
If they are Chinese then they are in their hometown right now (maybe drunk - who knows).I would also appreciate an order confirmation stating the right shipping address and everything...

### Re<rest of thread truncated>
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    ""hardware_name"": ""Avalon ASIC"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""GPUs"",
    ""hardware_is_owned"": true
  }
]"
14252,"Date: 2011-06
Topic: If you were Tycho, would YOU fork it?
### Original post:
Would you rig the network with deepbit, if you were the pool operator?

### Reply 1:
I couldnt find the appropriate response in your poll, but what I would do:Sell off 5% of my accumulated BTC every day until I was at about half my total amount, then attempt double spends in the thousands of dollars while my block chain was statistically able to support it.Either way I would come out massively ahead.And I would laugh at all the fools who voluntarily allowed me to destroy the project they were trying to contribute to/profit from.

### Reply 2:
If I were tycho I'd wait. 50% is a terrible time to start forking, perilously close to having authority removed from me. If my pool were still growing as his is, with no reason to see it slowing I'd let my pool grow larger and larger. When I had assumed a large enough safety margin, and people felt all safe and comfortable since I didn't do anything for a long time after 50%, then and only then would I consider any shenanigans.Though to be fair Tycho is making about $2500 / day right now, so he's sitting pretty. He only has to wait until he gets tired of all this pool operator bitcoin nonsense to start cashing out.EDIT: Sorry $3,250 / day.

### Reply 3:
I would fork Deepbit. I mean, I'd have Deepbit 1 and Deepbit 2. I wouldn't fork bitcoin because it would lower confidence in bitcoins.

### Reply 4:
If they are controlled by the same person they could collude their block chains to be exactly what they both want. There is no increase in security.

### Reply 5:
$3K/day is $1M/year, bcpokey, will you burn that many green papers? flames will be spectacular!

### Reply 6:
If I was Tycho,I would secretly start my 2nd pool named something different with 0% fee.Each of my pool will have 30% of the market, and everyone will feel safe & stop making threads.But I actually have 60% of the total mining and can fork whatever I want.It's just me though

### Reply 7:
Yes I understand I'm the one who did the math. That's why I said that he is sitting pretty for now. But honestly this is a lot of work for a very volatile system. Not to mention it's a very tenuous situation for him to be in. A system that generates $1,000,000 a year attracts a lot of attention (from both underground and above ground sources), not to mention one that controls 30million dollars flowing through it. He might find himself in a situation where he is being bought out or forced out or just wants to stop dealing with all the headaches that this entails, and wants to cash out quick. Who knows. That's why I said for now if I were him I'd sit on my magical money fountain and only when I got sick of the headache bring it all down around me while profiting to the max.

### Reply 8:
Wow. There's a lot of unethical people here.Or maybe they're just jealous and projecting.All hail king [Tyco]!

### Reply 9:
Somewhat offtopic: Why do people keep quoting my own math back to me in responses to me? If I said he makes a million a year, you don't need to prove to me that he makes a million a year.

### Reply 10:
So other people can see it. And if we had this conversation yesterday it would be less than $800,000 per year.

### Reply 11:
I don't see how anyone in their right mind would do smth like this. If he did people would surely switch, I don't think that can be covered by double-spends.

### Reply 12:
Dude you don't understand, the point is, you did the math wrong.Elephants * bananas + apples = MonkeysBarracudas + Battlefield 3 - Dinosaurs = HumansYou take Humans/Monkeys = Rise of the Apes (Planet of the Apes Prequel)Then you add Jeff GoldblumAnd you take the negative Rotten Tomatoes score and add Macaroni and Cheese and a tub of ice cream.After you vomit and cry yourself to sleep that night, you wake up and rememberTycho is making bazillions in Chinese Yuan off of Deepbit.That is all.

### Reply 13:
Fair answer.Just for fun though I was curious how much Yuan that would actually be.1,000,000.00 USD=6,476,805.95 CNY. Tycho can have one hell of a party in china.

### Reply 14:
70 Blocks/Day (Generous) * 50 BTC/Block * .03 Fee * 25 USD/BTC * 365 Days = US$958,125Consider that he's probably just holding a lot of BTC since cashing that all out could make a big dent in the cash holdings of any market. Not counting server and bandwidth costs which are probably huge. Not counting possible losses on the PPS side.Not counting possibly paying other people to help with the system since it's huge for 1 person to run.Not counting many other factors. Also consider than introducing a double spend chain is not a quick and easy process. It takes a lot of work. If I was tired of running it then I would sell it since it has a US$1M/yr valuation, otherwise I enjoy the hell out of running it and watch the success of my labors.

### Reply 15:
because your math is the only reason, if you were a singer, you won't cut off your own tongue...

### Reply 16:
Ummm no he is no<rest of thread truncated>
",[]
9970,"Date: 2016-09
Topic: Bitmain's Refused From S9 Warranty, Buy at your own risk
### Original post:
Bitmain's Refused From S9 WarrantyI used an old topic to write more of my problem with BITMAIN and Antminer S9 warranty problem.I have 23 x Antminer S9.11 pieces Antminer S9 are from Batch1, because I have three bitmain accounts. (purchase limit was 5 pieces per account)One of the S9 miners is only empty shell, because from the 4 miners one hashboards are now shipped to repair. Total 4 pieces.Three of them have already been repaired, but one which I sent to Bitmain from other account with only few purchases, Bitmain refused to repair.The reason is - PIN is lost in circuits board.No one here could explain what it means.I paid for that f miner 4 BTC shipped + 20% VATI do not agree, that Bitmain refuses from its warranty obligations. I've met all warranty instructions.1. My shipment was packed with a lot better than the Bitmain manual provides<link> board was in a static envelope, wrapped with a lot of bubble wrap and all placed in big strong carton.All six sides empty seats in the box were filled with ultrafill granul.2. The box is so large that to obtain such an injury by courier company, he must have external injuries.I have exactly with the same type of package sent three more bla<rest of post truncated>

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""circuits board"",
    ""hardware_is_owned"": true
  }
]"
22075,"Date: 2017-12
Topic: Looking to bring life to 4 old BFL Monarchs...need help
### Original post:
Hello,I have 4 old BFL monarch cards just collecting dust in a closet. Never really set these up as I didn't have time or knowledge to do so. I've been looking around on how to set these up and the info is rather scarce. Are these even able to do the task? I don't pay electricity so I figure I have nothing to lose. Anyone able to help me out or point me in the right direction? Thanks.

","[
  {
    ""hardware_name"": ""BFL Monarch cards"",
    ""hardware_is_owned"": true
  }
]"
21255,"Date: 2017-01
Topic: New Firmware for Antminer S5 11 of july 2015?
### Original post:
So i sent a email bitmain asking a question and they repliedCode:And please kindly upgrade the firmware of S4+ and S5 with below link:S5 firmware: <link> firmware:<link> <truncated> knows what's new on this firmware?

### Reply 1:
You might email them and ask. I know the big thing some experienced loss of internet and then the miner would get really hot. It seems to be hit or miss.I have not experienced it, but some have. I would guess this is biggest thing they had to work on to fix what ever caused some machines and not others to do this. If they put it in this ... only know by asking It is weird but that firmware is not in the normal area. When they release it and put it there it shows changes. So maybe soon they add it to there.

### Reply 2:
just tried it and my hw went down from 0.0090 to 0.0030 and you can adjust fan speed (freq 375)

### Reply 3:
This firmware is not good, too many errors HW for my S5, removed right away, maybe not bitmain released firmware because it sucks

### Reply 4:
Guys,anyone can suggest a custom firware for Antminer.S5?The custom firmware that I'm using already about a month, is stable and pretty good, but it says it uses cgminer 4.9.0, maybe you know where to find with the 4.9.2 from the same developer?<link> exact name is <truncated> you know where to find the same for 4.9.2?Thanks in advance!

### Reply 5:
Still happen to have that firmware?Link doesnt work.

","[
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S4+"",
    ""hardware_is_owned"": false
  }
]"
11552,"Date: 2011-07
Topic: Harware Watchdog via USB/Serial for Debian
### Original post:
I found something that may be useful to many people here, a hardware watchdog, seems pretty easy to make and pretty cheap. <link> would like to build it and try it out, Im just worried that there is no way to connect this to current motherboards as it goes through serial cable. Is there some thing that one can use to add a serial port to a linux box? Or maybe control the pins in a serial cable directly to send pulses to a device like this?

### Reply 1:
The problem with a watchdog for a mining rig is that it's rarely Linux that goes to hell, but the crappy AMD Catalyst video driver. The rest of the system keeps on going, and the watchdog would never do anything. A software watchdog is needed in this case, something that watches your miner's output, determines if the system has stopped mining, and takes corrective action.

### Reply 2:
You could use something like this that looks at the GPU usage from aticonfig directly (I wish I could link back to original thread where I got this but I lost the <truncated> DISPLAY=`cat <truncated> waxuf | grep miner1.sh -c`ld=`aticonfig --odgc --adapter=0 | grep ""GPU load"" | cut -c 30-35 | cut -d % -f 1`if [[ $pc -lt 2 || $ld -lt 50 ]] ; thenkillall -KILL miner1.shnohup lxterminal --title miner1 --command <truncated> &fiSo I think the software side would be pretty easy to implement (the guy even has a sample script on his site on the link above). but does anyone know if there is any way to pulse a USB pin from linux?

### Reply 3:
Look at <link> they offer fairly affordable and reliable USB, PCI and PCI-e watchdogs. Their cheapest USB watchdog costs just 50 or so. I got an older PCI card made by them off eBay for just 25.I'm not triggering the watchdog in the kernel or a background demon process. Instead I modfied the Phoenix miner to trigger the card every time a result is accepted by a pool (the modification is less than 20 lines of code). Together with a timeout of a bit more than one minute, this rather brutal approach works splendidly - no matter what fails (except power obviously), as soon as no results go to the pool for a while, the box does a hard reboot. Of course you had better use a journaling file system with such a setup. My stripped down Windows 7 setup with NTFS will be mining again just two minutes and a few seconds after the original failure.As for a serial port - if your mainboard doesn't have a built in serial port or a serial pin header (some still do even today) you can get an USB to serial dongle. Check that it uses a chip that's supported on Linux - most should work these days. Then just point your software at /dev/ttyUSB0 or whatever it's called.

### Reply 4:
I picked up a bunch of iBoot devices on ebay for under $50 each. They intercept the power, and allow you to reboot machines manually through a web interface or automatically via an auto ping feature. When the computer locks up, it automatically reboots, and if a driver craps out (and I can't ssh to the box), I can always reboot it manually

### Reply 5:
Good call on the header on the MB, Im going to use that and see what I can come up with. I tried looking on ebay, but seems like the items are expensive now, so I will have to wait. Also how do I know if Im using a journaling file system? Im running coinlinux (debian from a USB stick). Im guessing a journaling file system is more tolerant of random restarts?

### Reply 6:
Yes, it's more tolerant and especially it restarts much faster in such a situation as power failure or hardware reset.I don't personally know coinlinus, but just type ""mount"" in a terminal window. If you see ""ext2"" in the line that has the lone slash, you're not using a journaling file system. If you see ""ext3"" or ""ext4"", you are on a journaling system. In most modern Linux setups the latter is the default, so your chances are pretty good.(If you see neither of the three, post here again with the full output from ""mount""; a few Linuxes use other filesystems than those from the standard ""ext"" series).

### Reply 7:
Heres what I got from mount: <truncated> mountaufs on / type aufs (rw)tmpfs on /lib/init/rw type tmpfs <truncated> on /run type tmpfs <truncated> on /run/lock type tmpfs <truncated> on /tmp type tmpfs <truncated> on /proc type proc <truncated> on /sys type sysfs <truncated> on /dev type tmpfs (rw,mode=0755)tmpfs on /run/shm type tmpfs <truncated> on /dev/pts type devpts <truncated> on /live/image type vfat <truncated> on /live/cow type ext4 <truncated> on /live type tmpfs <truncated> on <truncated> type fusectl (rw)I am running off a usb stick which may mean its not a ""standard"" install.

### Reply 8:
/live/cow (which I would guess is the persistent overlay) is journaled. The rest is not.

### Reply 9:
Is that good? Im guessing the persistence file is the only thing that changes while the system is running. I do remember having to add a persistence file to the usb stick image. So shoul<rest of thread truncated>
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10830,"Date: 2019-07
Topic: Current List of Competitive Hardware - June 2019
### Original post:
In case anyone is wondering why I haven't added the M20S to the list yet, despite a couple in the wild. To my knowledge Pangolin has the first complete batch of demo units that should have shipped out, and were available for order off the website. That batch did not completely ship out and I'm unsure how many people did or did not receive them. I know that I did not receive mine, but some higher profile members did receive theirs, which can sometimes be problematic. Secondly the batch was also delayed several weeks. So until this is fulfilled I'll cautiously hold off on promoting it through this reference thread.

### Reply 1:
What about the Bitmain's T17? Are those not competitive enough?

### Reply 2:
At steamtyme please list t17At octomob gave you a merit for pointing it out.

### Reply 3:
Oooh, can I get one for pointing out they are sold out? Please?

### Reply 4:
Updates:I have created and included a list based on efficiency of all currently and recently available hardware under .07 J/GH I have updated MicroBT's best offering to the M20S, as from what I can tell there are no longer any outstanding orders I went through and updated pricing for gear based on what <truncated> are advertisingRight now the only odd listing is Innosilicon. It appears that a lot of the T3 variations have become worse with efficiency and or have performed under spec. I'm going to do a little more research and see what if there is any discussion around the pre-orders for the T3+; which is not an improvement in efficiency.

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22118,"Date: 2017-12
Topic: How to check the temperature of my antminer s9
### Original post:
Ive just bought a bitmain antminer s9 and how can i check the temperature of this machine?

### Reply 1:
The miner status page shows the chip temps while it is hashing.

### Reply 2:
And what the temperature should be between?

### Reply 3:
Its safe to be between 70-95, after that it needs to be shut down or it automatically shuts down depending from batch, need to think about ventilation space as well

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11520,"Date: 2011-07
Topic: cgminer - CPU/GPU miner in C for linux/windows
### Original post:
Generated a new thread making it the official CGMINER thread since it is the primary development now (and not cpuminer) and long since has become a project in its own right.<link>

### Reply 1:
The software formerly known as 'cpuminer' is being updated to include OpenCL GPU mining capability, thanks to Con Kolivas. Until this software is fully ""baked"" and ready, it is being developed on a git branch at <link> stable, we intend to merge Con's work and rename 'cpuminer' to something more appropriate.Update: See this cgminer thread for official cgminer support and development.

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22285,"Date: 2018-01
Topic: S9 220V Electric
### Original post:
Hi guys,If I have 3 S9s connected to a 15x2amp Circuit Breaker (220v). How many amps should I get per line (2)?Thanks,

### Reply 1:
I measured 6.25 amps per S9 @245V. NFPA rules limit continuous loads to 80% of the circuit rating. So a 15A circuit is limited to 12A. I use 20A circuits to feed 2 S9s.

### Reply 2:
When I put the clamp on each line it gives me 18amp, but there are 2 lines so 18 amp on each = 36 to a circuit of 30(220). Why do I get 18 on each line? Isn't it supposed to be 9 amp on each line (2) to get 18 amp?

### Reply 3:
Nope. All the current flows through both lines. Measure current of one line X Voltage = Watts The current on the other line should be exactly equal. If not, some current is going to neutral or ground from one of the lines.

### Reply 4:
Thanks for your help!

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22259,"Date: 2018-01
Topic: Inexpensive 1400W Power supply
### Original post:
I got my hands on one of these as a test sample. My friend says he has access to a LOT of them I believe.Supermicro PWS-1K41P-1RAnyone know if these need any sort of external input to power on? The power LED lights when plugged in, but the 12V rail doesn't put anything out.Anyone worked with these? Any adapters out there?

### Reply 1:
find some one to design a custom break out board with cable plug or figure out how to solider wires in the right place with pcie cables on one end. then it should work on any miner that has pcie plugs , sorry i'm just a user that knows how things work etc with no skill of designing.the way it look it is very limited with break out boards.that does look sweet thu if you find a break out board that fits it ill buy two .

### Reply 2:
it should be a good quality psu that company makes a lot of server pcs

### Reply 3:
It looks exactly like the Antminer S4 PSU

### Reply 4:
One of the pins is 1mm shorter than the others (PS_ON). Connect to DC ground and it will turn on.

### Reply 5:
Except that it doesn't. At all.

### Reply 6:
How much are this kind of PSU?

### Reply 7:
You might want to consider the following:<link> like you might be able to use this to turn it on, and/or fashion your own connection. I got to this via Google for ""pws-1k41p-1r pinout""

### Reply 8:
Ebay has a nice list, the prices are not to bad <link> with no real easy way of powering them with out using a server , i can see why kind of they are priced how they are.!!! . The PSU that have custom made break out boards seem to cost more on ebay or have custom made boards that power them .not sure th if train of thought is right they just seem to cost more.

### Reply 9:
To a Bitcoin mining person, a power supply which has a readily available breakout board is ""more valuable"" because it's much easier to put together a working solution. I can see where that might tend to bid up the prices a bit for the Dell 750W and HP1200W and other popular supplies. A less common one, such as this, for which I don't there is a breakout board means that somebody who isn't going to plug it into the server for which it's designed will need to do more work to make it useful as a high current 12V supply. The Ebay price looks to be about $70-75 shipped in the USA. Jared: What price is your friend looking to get, and where (e.g. USA, EU, what)?

### Reply 10:
This would be great news only if someone would've made or would make a breakout board for it.

### Reply 11:
Considering there's cheaper, bigger, better PSU, i don't really see them making one for these. Also the availability of these is not very clear and the price would need to be like 20$ per unit.

### Reply 12:
Like this one?<link>

### Reply 13:
Those are fun because they're a super awkward shape, and because mains input and DC output are tightly packed together on one end.

### Reply 14:
Ya, I have a few though from a chassis so I just soldered up a C19 on the AC side and 10ga wire to the dc output. Have a raspberry pi running AWS IoT code to control power on/off remotely. Working on getting the I2C and some other data gathering working now. Would be way easier if there were a decent breakout for them though

### Reply 15:
I tried jumpering the pin to - but it didn't power up... Very strange. I hope I didnt get a faulty one... But it was free. And the pin on the datasheet I found originally is the very same .5mm short pin (at the end of the connector) I already labeled the +, - and 5V rails.I can make a breakout board for it; does anyone have the connector part number to be able to interface with it? That's where I kind of got lost on my attempt to make one. But if someone knows of a good part number...... Ill just whip up my own at that point.... I haven't had the chance to etch my own board since High school so why not do it myself.He hasnt said where he gets them from or how many he has access to; but hes brought me a lot of good priced hardware in the past. He keeps bringing batches of gridseed blades to the US from china to sell as well.

### Reply 16:
Has anyone found or been able to make/adapt a breakout board for these SuperMicro PSUs?

### Reply 17:
Just jump the pin in my picture to ground and the PSU will turn on and output 12v<link>

### Reply 18:
yep.... Glad to see others utilizing these PSU's.I was able to get it to power up a few months later when I revisited. I was trying to use a wire with an open to jumper the short pin. (the PS ON line)You need a LOT.... and I can't stress it enough, you need a METRIC SHITTON of heat to solder those wires to the connector to be reliable.I have a source for the card edge connectors in china through a buddy whom puts together PSU kits for miners and sells them on ebay/amazon. I just need to finally have him pass it down the line to get me a sample of one the proper size for this PSU and I plan to make a breakout board for it. Its an odd shaped PSU for <rest of thread truncated>
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23024,"Date: 2019-07
Topic: Antminer S11 Not Mining
### Original post:
I will check the logs.Did your gear ever work?

### Reply 1:
Does it look like the s11 bmminer is keep restarting? Check the dashboard overview the version of bmminer is not showing. There are 2 possible reasons why it's not showing the first one may be the miner is not connecting on the internet there is something connection error or blocking your miner to connect online sometimes changing DNS solves my issue. I also like to suggest you replace the Ethernet cable you might have a defective ethernet cable.2nd one is you have corrupted bmminer program or something wrong about the firmware that gives you no BMminer version in the dashboard you can also see this in kernel logs that BMminer is restarting. I suggest you don't touch anything about your miner for now because it is still under warranty so sending it back to the manufacturer is the best solution.

### Reply 2:
Thanks for keeping us updated, too bad we couldn't help, i also hope that a mod will pin this topic and maybe label it under ( how to ask for help) i know i said this before, gotta say it again, i love how you threw all those info at us, neat.Please keep this topic updated so other S11 owners can make use of it. Good luck.

### Reply 3:
Good day Everyone, Would like to ask for assistance. My antminer s11 is not mining.See image below: <link> current miner configuration <truncated> <truncated> <truncated> xKernel Log: <link> are the steps I already did:I already upgraded the firmwareI restarted to factory defaults many timesWaited for 1hour 4hour and 8 hour in each pool tests - antpool and nicehashrestarted the device each time there is a change in settings ( mining config )Screencapture video:Record1 - Screencapture video using Nicehash<link> - Screencapture video using Antpool<link> else should I do? Any advice? Thank you very much.

### Reply 4:
Hello philipma1957, Thank you for the reply.It did not work eversince. The item (S11) just arrived in less than a week. I have existing S9j that is working perfectly fine.

### Reply 5:
Gave you a merit for perfectly presenting your issue, I have not seen anyone who would present all the commonly needed information the way you did.1- can you try to use ""x"" without qouts for password instead of ""123"" ?2- what is the exact voltage you supplying this s11 with, is it less than 220v or higher than 240v ?

### Reply 6:
Thank you for the reply. I have read your post at: <link> it was indeed helpful.Yes I did both 123 and x. But still the S11 is not mining.The voltage is between 220V to 230V.

### Reply 7:
The kernel log seems fine to me, prime suspect was the voltage, because the S11 is known to have issues when plugged into >240v/<220v, but if you are certain about the voltage, then that rules it out.This could be faulty PSU, sadly nothing much you can do to test it unless you have another S11 , is it possible to unplug all hashing boards and keeping only one board ? i also want to see the system overview, does it say ""socket failure ...."" or ""Linux ,,, "" on the Kernel Version?

### Reply 8:
@ optry putting in my minersPool 1URL <truncated> <truncated> xjust do pool 1see if it mines there for a few minuteswait a bit and check if it comes upif it does then something is wrong with your pool infoif it does not come up plug in the working s9 etc cable since you have a working s9if it comes up you have a bad switch or a bad cable that you were using for the s11.

### Reply 9:
This is pretty much what i have in mind for now, what's why we need to see if he is getting that ""socket connection failed"" thing on the main overview, and you are right about changing the DNS, he should diffently try to do that if he is getting that socket failed thing.since he can access the miners, chances that the cable is bad are slim to nothing,but still no harm trying I don't think playing with the PSU cables will void any warranty, but indeed he should not go to the extent that risks voiding the warranty for a brand new Asic.

### Reply 10:
I have seen a few weird internet drop outs and switch to a cat 7 cable fixed them.also I would like him to do a different set of poolshe could do ckpool and solo.ckpool as one and 2 with nicehash thirdsometimes you copy and paste a line of pool info in and also drag in a blank space it makes for no connection.

### Reply 11:
mikeywith , BitMaxz , philipma1957 Thank you guys for your replies and guidance. I have learned many stuffs in troubleshooting the miner. The supplier told me to ship back the control board. I just hope that is the only problem. I will keep in touch. And post in this thread for updates. Kudos to this forum.

### Reply 12:
Thanks for reply let us know if controller works.

### Reply 13:
Hello Everyone, Its been more than a month the S11 is running. The problem is the control board.

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22684,"Date: 2018-07
Topic: Antminer S9 13.5 one board stopped hashing
### Original post:
Hi, I have searched on the forum and internet for this topic and, although it seems to be a common issue, there is no proved solution. I'm using:- Antminer S9 13.5 Th/s- PSU AWP3++ Power Supply- Hardware version: 16.8.1.3- Kernel: Linux <truncated> #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017- File System: Fri Nov 17 17:57:49 CST 2017 (just updated)My issue is that after 3 or 4 hours of working one of the boards is missing from the Status table and the hashrate is 2/3 (9.3 TH/s more or less). I can confirm this ""change"" with the mining pool monitor (currently using Slush pool). If I reset the antminer, all boards are listed and everything seems to be ok.In some threads people say that by changing the AWP3++ to a non-Bitmain 1600w PSU it fixes the issue. Is this true? (if so, which one do you recommend?)Others say that by sending to warranty the board (or the entire unit) it would fix it, but some people say that the issue persists.So, I'd like to know if someone has a solution for this or can guide me for troubleshooting thisThanks!!!!

### Reply 1:
Presuming your running using 220V power, you likely just have a flaky hash card. I've lost at least one hash card in 11 of my ~150 S9s, and I'm told I'm doing better than most.

### Reply 2:
Yes, I'm using a 220v line and two questions for you: Which PSU are you using? and Which pool do you recommend? Thanks

### Reply 3:
You just updated to the worst firmware bitmain has ever put out for the S9, id recommend rolling it back if you are having any issues.

### Reply 4:
I use APW3++s for S9s and 841s, Sorcerers for 821s and 841s.Highly recommended kano.is as a pool, or if you insist on a fancier UI/Higher fee/lower variance - slushpool.

### Reply 5:
okay, what is so bad about this firmware?What is currently the best firmware to upgrade to? I have a S9 as well that has one board gone, and checked: its the same fw..

### Reply 6:
Just a lot of reported problems with the auto-freq November firmware. There was a previous release on the Bitmain site, but that have pulled it.You can see if your controller will accept the 650 fixed frequency firmware, then use the minerAdvanced.cgi page to tweak its performance. Not all controllers will accept that firmware however.The other thing to do is to pull your system apart, pull the boards, and blow them clean. Sometimes a card will stop simply because the airflow is bad (I recently recovered a bunch of cards just by cleaning them - all had small moths and other bug parts blocking the leading edge of the heat sinks).

### Reply 7:
To be honest with you, changing the PSU wont do anything for the problem your describing.Your Hash board is failing and will die soon. It will work for a bit then die, then all together not come back online.Be prepared to RMA the S9.This is from experience on systems I have sent back.

### Reply 8:
did u found a fix? i have the same problem, 1 hashboard on 2 antminer stopped showing up in the miner status page, i was traveling and leave them unplugged, i came back plugged them back and they have this problem..does anyone have a previous firmware i can try ? mines are 13.0ths

### Reply 9:
I have one S9 where one of the boards stopped hashing overnight. All the ASIC chips still look good. Here's a pic:So the board is still there, it is just not hashing. I rebooted that unit, but that one board still would not start hashing. Board dying?This is a 13.5T model, got it from Bitmain in December. Never messed with the firmware.

### Reply 10:
Have also found that process of swapping the power supply allows the boards to cool enough that repowering will sometimes bring them up. Multiple experiences where I thought it was the power supply, but it was actually just the few minutes of downtime.

### Reply 11:
Try changing the power supply, we've had boards drop like that and a swap of the power supply fixes it, sometimes leaving the unit unplugged for a few minutes and then plugging it back in helps but doing this usually drops the board again within a few hours.

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12061,"Date: 2012-10
Topic: Possible memory leak?
### Original post:
I went to check something on my mining rig and found that it was more sluggish than it should be. top revealed that bfgminer was using an inordinately large amount of memory:Code:top - 09:06:31 up 8 days, 15:38, 1 user, load average: 1.57, 0.51, 0.22Tasks: 87 total, 1 running, 86 sleeping, 0 stopped, 0 zombieCpu(s): 0.3%us, 0.5%sy, 0.0%ni, 99.0%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%stMem: 955744k total, 945944k used, 9800k free, 308k buffersSwap: 2097148k total, 120000k used, 1977148k free, 10296k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND26545 salfter 20 0 1179m 812m 3172 S 1 87.1 39:04.07 bfgminer...It had only been running a couple of days. I've had it running longer before, but this is the first time I've seen this problem:Code: bfgminer version 2.8.0 - Started: [2012-10-02 09:16:12] - [ 1 day <truncated> avg:133.6 u:135.5 Mh/s | A:5434 R:46 HW:0 E:240% U:1.9/mTQ: 0 ST: 2 SS: 0 DW: 196 NB: 273 GW: 2267 LW: 11715 GF: 91 RF: 1Connected to <link> with LP as user <truncated> <truncated> Started: <truncated> management [G]PU management [S]ettings [D]isplay options [Q]uitOCL 0: 62.0C 39% | <truncated> | A:5434 R:46 HW:0 U: <truncated> 08:51:33] Accepted aa6cd27b.2bfb5b6c <rest of post truncated>

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17212,"Date: 2012-07
Topic: windows or linux?
### Original post:
I've done a quick search and nothing showed on the first 2 pages.I'm just curious why there seems to be a preference for linux based rigs over windows?Is this an ideological preference or performance based preference ?

### Reply 1:
A lot of users will not bow down to big corps. There are many reasons.

### Reply 2:
Linux is slim, and not a memory or cpu hog. So it makes it great for embedded systems that just have to do coordination of the getwork to the GPUs

### Reply 3:
Linux for performance.Linux for ideology.Linux for $$$ BTCBTCBTC.

### Reply 4:
>Free.>Runs for months without errors.>Light on hardware.>Usually a slight boost in hash/s.

### Reply 5:
windows and linux provide the same mining performance the only advantage to linux is it needs less background resources to run, so if you're running a dedicated rig linux turns out cheaper for hardware (little ram and no hard disk needed).

### Reply 6:
Thanks for the responses.I'm a bit behind having only gotten my head around BTC in the last couple of weeks but i am planning on buying a 7970 and throw it in an old box we have here and stick it in the corner.Does this sound like a OK start? I see there is allot of back and forth about asics

### Reply 7:
Right now its more profitable to mine LTC then trade it for BTC than mine BTC atm. I've been hearing the 7000 series cards cannot be memory underclocked. I don't know where that stands atm.If the asics hit, I believe and many others believe, gpu miners will switch over to mining ltc, trade ltc for btc.For me atm, I would make around 2.93 btc a week mining btc, but with me mining ltc and trading for btc, I make around 6 btc or so a week. But you gotta factor in the LTC difficulty increase.

### Reply 8:
If you want to get into gpu mining now it's probably more profitable to buy and old 5xxx card 2nd hand, I don't think there's enough time left for a 7xxx series card to pay for itself before asics take over.

### Reply 9:
In my experience Linux is more stable at mining. On windows I had every day troubles on some of my rigs.It will not be easy to sell 5xxx series after asics will come.

### Reply 10:
It's faster to setup BAMT Linux than Windows. It needs less resource and it's open source like BTC!

### Reply 11:
If you can BIOS flash 5 6870s or 6950s and setup BAMT in 38 minutes then yes Linux is faster. Win 7 x 64 install with SP1, ATI driver, MSI afterburner, Trixx took 38 minutes to get my 6870s to run 965/175. I doubt you can do that with BAMT. Linux uses less resources, but on a dedicated miner does it matter?If electricity cost is not an issue then go with BAMT, but I get much lower mem clocks more easily with Win 7 setups and that saves me over 110 Watts per rig (5 6870s).

### Reply 12:
I've played only with 5xxx series cards. Is it easy to run Win7 X64 on a USB stick with 1GB of ram?But I get your point about 6xxx series

### Reply 13:
Yeah the requirement for a HD is probably the biggest downside to a Win rig. Sucks I sold about 5 new 200GB laptop HDs just before the thailand floods - then I figured out I needed them and now you're can't get any new drive under $60 - well HD that is. That's why I'm just buying small SSDs for the mining rigs - makes setup so fast. But time is money.1GB of RAM? Shit I have over 100 GB of DDR2 and probably close to 300GB of DDR3 that I got for free or near free when the prices were cheap and rebates plentiful. It's the cheap decent mobos I can't find - have to shell out $150 for 890FXA-GD70s since I know they're more or less problem free out of the box.What it boils down to is use what your comfortable with. Unless you're going to have 20+ cards just go with what you know. If you only know Windows don't mess around with trying to learn Linux since the miner won't be working while you learn. If you know Linux then setup BAMT and be happy.

### Reply 14:
If your just starting out, Most will do fine using a windows OS.However once you start having dedicated rigs, many find it more stable and cost effective to use a linux OS, which ""flavour"" of course is a personal preference. After all once you start having multiple rigs, it's nice to know you can set and forget a linux box, the same is not so easy to be said about a windows machine. Any downtime loses you potentially earned bitcoins.

### Reply 15:
Agreed. Windows is fine for small miners. Not 100% stable, but it is manageable on a small scale.Strange no one has mentioned the other advantage of linux: 8 GPU cores usable versus only 4 on Windows.

### Reply 16:
Really.... wow.As usual, I'm still glad I ditched windows 10 years ago.

","[
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    ""hardware_name"": ""7xxx series card"",
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    ""hardware_name"": ""6950s"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""200GB laptop HDs"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""SSDs"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""DDR2"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""DDR3"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""890FXA-GD70s"",
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10042,"Date: 2016-10
Topic: MOVED: Sheriff Contacted over power consumtion
### Original post:
This topic has been moved to Trashcan.<link> dup threads.

",[]
13897,"Date: 2011-04
Topic: Building a multi GPU system
### Original post:
When building a computer specifically for mining BitCoins, with ATI/AMD cards, is it neccessary to match the cards up like you would in a gaming machine, or can I simply plug in whatever card I have available at the time?Right now I have a 6990 on the way, and I already have a 5970. Can I just plug in those two cards without any special setup? Additionally, could I add a 5870 to the mix as long as the motherboard / PSU can support all 3?

### Reply 1:
Doesn't have to be matched, but thermals will be a problem with those two cards.

### Reply 2:
I have also a question about that. I have a 5850 and a 5770 in a mobo Asus m2n-e sli. It has 2 pci-e slots so I can plug both cards but when I use the miner it only shows me the first one and in GPU-Z only the card that is in the primary slot has OPENCL. There is some way to use both to miner? At least I will have to use only 5850 but it would be great if I could use both.

### Reply 3:
Yeah, I'm interested in seeing the temperature interaction between the two cards. I'm using a Cooler Master HAF 932 for the rig, which in my experience with gaming rigs is able to very easily run multiple hot GPUs without much issue.

### Reply 4:
Do you have a monitor plugged into it? If not, plug one in. Stupid quirk of the system requires it to have a monitor. If you lack a 2nd monitor you can search around on how to create a DVI->VGA null monitor adaptor (takes 3 75ohm resistors from radio shack to make it happen).

### Reply 5:
I've got that exact configuration and it doesn't work at all I'm afraid. At least not with 64-bit Windows 7 and Catalyst 11.3 or Catalyst 11.4 (beta), and the 2.4 Stream SDK.What happens is that if you have both cards enabled in Windows (i.e. with monitors connected, and your desktop expanded onto them), any OpenCL program you try to launch will simply freeze when it tries to initialize the OpenCL subsystem.If you disable the 5970, then you are able to start OpenCL programs but they can only see the 6990. AMD says they know about the problem and are ""looking into it"" but I'm not hopeful for a resolution anytime soon.The 6990 is also frankly a bit annoying for everyday use, because if a program is using the first GPU for OpenCL calculations and you watch a video (YouTube, Windows Media Player, etc.) the video driver freezes and you have to reboot. This is also a ""known issue,"" although I'm more hopeful for this one to be fixed.But as far as the two cards working together ... I wouldn't hold out hope. If you can figure out a way to make it work, I'd love to know how you did it. :-)

### Reply 6:
If it's a machine just for mining, put Linux on it. It handles multi-card configurations much better. There are guides available.

### Reply 7:
Ok thanks, do you know if dvi-vga adaptor that comes with the graphic card would do the same use?

### Reply 8:
No, you need to modify the one that comes with the PC. Follow this guide: <link> based on other folks replies here, it seems like this is just going to expose the next problem you're going to have.

### Reply 9:
The 6990 is not supported under Linux yet, even with the 11.4b hotfix.Probably will be fairly soon; all other 6900 series cards are.

### Reply 10:
Ok, thanks TenthReality, tomorrow I will go to buy some resistors and I will try that.

### Reply 11:
Damn, I should have that printed on a T-shirt after my 6990 upgrade fiasco.

### Reply 12:
So since the 6990 might not be ready for full duty mining yet, should I swap my 5970 (currently in my gaming rig) with the 6990, and then plug in the 5970 and 5870 into my mining rig?

### Reply 13:
If you're using the 6990 by itself, it will work fine for mining. I'd leave the 5970 in your gaming rig (and do bitcoin mining in the background) since it won't lock up your system while mining ifyou watch a YouTube video, etc., like the 6990 will.

### Reply 14:
Alright, so it looks like the best way to utilize the 3 cards would be:Mining Rig: 6990Gaming Rig: 5970 mining when not in use. 5870 added to system, and mining 24/7.

### Reply 15:
Sounds perfect. The current drivers will also be very happy with that configuration.

### Reply 16:
Wow what a stupid bug to have. Does this happen with every Catalyst drivers package of only with certain ones? Also have you tried disabling GPU acceleration in flash? I heard that can cause the video card drivers to lock up. Also update flash to the latest version.

### Reply 17:
It seems to be every driver version, and GPU acceleration in Flash makes no difference (tried both ways). But it's not Flash-related--it's a problem with any video overlay. There's the same problem playing video in any other applications (Windows Media Player, Media Player Classic, etc.).See this thread on the Bitcoin Forum where it has been discussed extensively, along with the official ""GPU lockup if running OpenCL and playing video at the same time"" thread on the AMD OpenCL forum. It was a problem<rest of thread truncated>
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    ""hardware_name"": ""Catalyst 11.4 (beta)"",
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    ""hardware_name"": ""2.4 Stream SDK"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Linux"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""dvi-vga adaptor"",
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11629,"Date: 2011-09
Topic: GUI miner - cant load dll error
### Original post:
I wante to run guiminer in CPU mode on my remote server [i dont care its slow, its idling and has 4 cores]ImportError: DLL load failed"" The specified module could not be runany ideas? server is 2008 windows. maybe other miner would work ?

### Reply 1:
Same here.... let's look in the logs to see what dll it wants...

### Reply 2:
Install the Visual C++ redistributables!

","[
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11046,"Date: 2021-11
Topic: Where can I buy antminer s7 new?
### Original post:
Do you guys know a legit page that sell them for $400-$500. Electricity in my country is free and im trying to build a little setup. What do you recommend me?

### Reply 1:
I've got a hosting customer with some solid used units he'd let go at quite a bit less than $400. I can provide PSUs as well.

### Reply 2:
The s7 has been out of production for over a year. There are NO 'new' ones.I would look into Sidehack's offer of proven used ones.

### Reply 3:
You might find some new ones on sites like eBay but otherwise unless some people have hoarded the miners new and are only now selling them you won't get any new. Also, Bitmain usually mines with the units before they are sold so most units are not truly new even buying directly. The miner is not available on the site new anymore.

### Reply 4:
I'd be surprised if anyone actually bought miners without the intent of using them. They depreciate in value very significantly. The case I can think of are those who buy more than they can use in order to get a volume discount and then sell the remaining units.Also, it is very common for products to be ""burn in"" tested so by that definition, they would be ""used"". That's actually a good thing since it cuts off a good part of the front of the ""bathtub curve"". (The back of the curve, like computer hardware in general, is not very relevant since the hardware would be long obsolete by then.)If electricity is free, the key factor to look at is hashing power per dollar. The S7 is pretty good if you have a well ventilated place to put it where the noise is not an issue. Also consider researching altcoins.

### Reply 5:
In the case of Bitmain I've received dusty products that have been used for possibly days, which definitely sounds like they use them to mine for profit before selling em first. They could've made the S7s months before they were actually sold and mined with some in that time before selling.

### Reply 6:
The last source for ""new"" S7s I am aware of was NewEgg - but they've been sold out for months now.It would appear that BitMain dumped the last of their S7 units there as opposed to needing months to trickle them out via their own website.

### Reply 7:
They do a minimum 72 hour burn-in on all the miners. It is not a full on data center where this happens, and can be a bit dusty. I have personally seen the location where it is done.

### Reply 8:
Ive got an almost new s7 4.7th/s that was run from jan 12th till the end of feb. So its got about 6 weeks total use on it that I was thinking of maybe throwing up on ebay.

### Reply 9:
Antminer S7 is out of stock since summer 2016 latestLast batch was the number 20 .. if i remeber well ..but there is no problem to buy one old S7, if they work properly ..i think is better to buy one S7 who works fine since 1 yers, instead a new one, without know how does it work ...

### Reply 10:
Kind of a late reply, but do you know if he still has any?

### Reply 11:
You looking for stock units? Or would a quiet undervolted 900W/3.7TH unit do the trick?

### Reply 12:
Honestly I would be interested in either. After months of GPU mining I am trying to dip my toes into ASIC mining before I dive in and start doing pre-orders from China

### Reply 13:
S7's have been out of production for almost 2 years so finding a New one is out of the question.However, as Sidehack mentioned he does now <cough> have some that he can undervolt/clock for around 900w and low noise all while running well over 3.2THs or more. They of course had been used running 24x7x365 since the day I had gotten them and range from batch-1 up to the last one produced early 2016 which was finally retired a couple months ago (replaced by 2x Avalon 741's)

### Reply 14:
I'm setting them for 550MHz (3.7TH max) and around 880-900W stable, but I've got some boards that aren't behaving at low threshold voltage so I can take them back to approximately stock power and hashrate. I say ""approximately"" because I'd probably tune them individually for more optimal voltage at stock hashrate, which should save some watts. Or, if you were interested in buying one, I could tune it to the optimal hashrate for whatever maximum power draw you wanted to deal with.PM me if you're interested and we can probably work something out.

### Reply 15:
off topic, how much hashrate i can get for my 2000$? i want to know and where can i buy it?

### Reply 16:
Be careful with ""free"" electricity; nothing is ""free"". If you have a landlord, and he realizes that you spent thousands of dollars in electricity alone, expect an eviction or even your power cut off.

### Reply 17:
Depends on how fast you want it. There are threads out there that cover the 3 companies pumping out new equipment. Canaan (Minerwarez), Bitmain, Ebang. They all have products working and that ship out, they all have different reliability track records, and different efficiency ratings. So check out those sites, then c<rest of thread truncated>
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16179,"Date: 2021-12
Topic: Which miners have the best quality?
### Original post:
We all have some disappointing experience with Antminer 17-series, but that dosent mean that the S19 series is bad, does it?I want to know which miners and manufacturers that are out there, and which models who you consider the best for a longest possible lifetime.

### Reply 1:
s17+ and t17+

### Reply 2:
Most any of the Avalon's from Canaan. Up to the A9xx they are near bulletproof. Starting with the A10x on up the main part of the miners have very few problems reported BUT as is common these days with Ants, the PSU's are their biggest problem area -- but still very few failures reported vs Ants.

### Reply 3:
These are the worst miner ever, that's common info now.

### Reply 4:
<truncated> man.... haven't had that good of a laugh in a while.

### Reply 5:
work perfectly and hiccupless in mineral oil tank

### Reply 6:
Whatsminer seems to have a pretty good reputation too. Personally I can only speak to the one unit I have had for over 2 years now.A Whatsminer M20 running with several S17 Pros.Almost every board of my 3 s17 pros have failed. Whatsminer has never had a hiccup (Granted I only have had one)I am now, within the last couple months) started running an M30S (runs hotter than the M20/S17/S19)I also have and S19 and s19 Pro

","[
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16367,"Date: 2022-11
Topic: Bitcoin farm in Texas, USA for rent
### Original post:
cheap electricity, maintenance covered, 24hr armed security for detail please call or text 9798249176, commissions for introducer

### Reply 1:
Do you have machines on site or just hosted space for rent?

",[]
21994,"Date: 2017-12
Topic: Antminer S9 problems, help! only 1 hashing board works
### Original post:
Heey guys,I am having some issues with my Antminer S9 from Bitmain, actually I got this problem with both of my miners.The problem is as followed:I have 2 antminer s9, connected with the original PSU from Bitmain at my house. When I instal it the IP adres doesnt say ""antminer"" but: ""network camera?"" which is quite strange, anyway. When I connect the miner, instal it and turn in on, it will show a red light on all three hashboards... BUT, after 5 minutes only one hashboard will stay red and will start mining. The other 2 hashboard wont show red anymore and are not visible when I log in the antminers IP adress. ...So actually I am only mining with 1 hashing board for 4Ths an hour, instead of three hasing boards... I tried to reset it many times, but nothing seems to fix this problem. I did discover that the middle hashing board is sometimes ticking (moving) by the air of the fan. Can someone please help me some this problem? The golden tip will be rewarded!!!! Thanks, Leon from The Netherlands.

### Reply 1:
The only fix is to send them in for warranty.

### Reply 2:
I can take a look at that for you. For the cost of shipping you can get a free diagnosis.J

### Reply 3:
You might want to reflash them.Do you own a network camera? Try disconnecting it to see if it's interfering by acting as a dhcp server. If not, your router needs a reset or something.But that issue is probably separate from the one hashboard issue.Post the kernel log and a pic of the miner status page, let's see what it looks like

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21846,"Date: 2017-11
Topic: New S9 Firmware how to upgrade
### Original post:
Helloits the same method to upgrade the S9's with the most recent firmware ? <truncated> recommend to use the Bitmain miner tool but i don't know how to use that application, can somebody help please??thanks

### Reply 1:
You need to match the batch of your unit to the firmware. Older versions had a static speed set and you need to flash with the firmware that corresponds to the default speed of the device.. If your current machine is an autotune version (aka no advanced settings tab and no wya to modify fan speed) then you can use the firmware labeled autofreq.

### Reply 2:
all my miners are autofreq, its necessary to use the application to run the upgrade or just from the miner like always?

### Reply 3:
ALWAYS run updates from the miner and especially with the auto-tune ones, after the update is done let it run for at least 10-15min before doing another reboot. It should come back up on its own after the update/reboot/test process.Just point the miner at the file you downloaded from Bitmain and saved on your computer.

### Reply 4:
thanks form helping me

### Reply 5:
So you should always keep your s9 with the latest firmware? I just got mine and it has a 2014 firmware. What exactly is auto-tune and auto-freq?thank you.

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23907,"Date: 2022-04
Topic: S17+ only hashing 45th
### Original post:
can anybody help me identify, here is my kernal log

### Reply 1:
It looks like chain[1] has a problem and needs repair. Also, chain[0] is not detected at all, is its data cable plugged in?

### Reply 2:
I suggest do a firmware upgrade first before you do anything else about hardware. If the upgrade doesn't work try flashing it through the SD card and if it still does not work then go try to replug all cables including the PSU metal(reattached the metal) and maybe there is a connection problem between them and replug the ribbon cable and clean other terminals with thinner or isopropyl alcohol.

### Reply 3:
I am going to try this now, However now only 1 board is showing in the miner status page, prior to this it was 2.I hope somehow I havnt broke one.

### Reply 4:
HeyI purchased these miners used.One of the boards is completely missing, so that would explain why Chain[0] isnt detected at all.However 2 days ago Chain[1] was working but now its not working, from your experience, what is the most common reason for this?I did transport the miner from one house to another, could it have broken in transport?

### Reply 5:
Another questionCan anybody confirm if my S17+ is running old firmware

### Reply 6:
Yes, thats old firmware. Latest would be Jun 02 2020 as per the Bitmain support site.

### Reply 7:
Did you replug the cables and the issue occur?would you mind to try running one hashboard with a known working cable so that we can check if it just a cable issue if not then try to upgrade your firmware to the latest version. Sometimes it can fix this problem by upgrading it to the latest firmware also, check the miner hashboard physically, and maybe a few of the heatsink is loose.

### Reply 8:
If the miner was running for a while before the heatsink fell off it's likely that a heatsink fell off or the board just got too hot and stuff started sliding. Most of the time it's one of them, heatsink, solder ball somewhere or a resistor is out of place. In a severe case it could be a chip, but you'll be able to determine more once you take the board out and look at it really good.

### Reply 9:
Hi,in Chain 1 some of asics failed and need to replace with new asics.

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16088,"Date: 2021-06
Topic: Is China's mining industry completely extinct?
### Original post:
Now China's Xinjiang, Sichuan, Yunnan and other places have completely shut down all mines. At present, the computing power of the entire network has dropped very severely. There is no place for mining in China. Is it hiding at home?Moreover, China's four major banks have already issued announcements prohibiting all transactions with digital self-currency. Without realizing channels, does mining still have a meaning?

### Reply 1:
Enormous country, your talking about 1% of the country; the banking is a big deal for retail, but bitcoin originated by meeting in public, so it returnsAlso GPU&HDD mining are enormous now in China, ppl use laptops to do GPU(ETH), and HDD(chia) is popular, so while bitcoin has been slapped, mining is not extinct

### Reply 2:
Yet another 'bitcoin will die' post like innumerable over the last 12 years.If the hash rate drops, the difficulty drops at the next difficulty change. So what?P.S. btc-room101 take the altcoin post to the scamcoin section where it belongs.

### Reply 3:
There are still a lot of miners in China, those having GPU mining rigs at small places or at home are still mining.

### Reply 4:
you are in the bitcoin mining section. you can't mine bitcoin with a GPU..what people do is they mine other coins then automatically convert them to bitcoin. it does nothing to benefit the bitcoin network itself or provides security to the network, or interacts with the network in any way other than being a wallet that collects bitcoin. none of the hashrate you look at on blockchain.com includes GPUs. whenever you hear about a hash rate drop, no one is talking about the hash rate for the ""GPU"" rigs...no one really pays attention to those. Not even ETH cause they are abandoning them for Proof of stake. not trying to be a dick just trying to let you in on it cause you are new.

### Reply 5:
If you talk about global mining, in its various forms, then no!If you're talking about Bitcoin mining, it's still hard to say whether it's over or not. Let's say it's in a pause phase.China is a very large country, with many specialized people, who will certainly find ways to get around the rules in a minimally safe way to continue mining Bitcoin.In fact, I see this as an opportunity for more energy-efficient mining machines to emerge. The best way to hide Bitcoin mining is that energy consumption is not detected by the network. In this sense, if mining equipment is developed, with good hashing capacity but low energy consumption, it will be easier to mine without being detected.Is this possible? I believe so, because the need forces us to develop it. It hasn't been done so far, because the biggest recipients of the equipment didn't have a big concern about energy, because the energy cost was low.Let's see how the market will react to this change.Until then, the smaller miners will be able to take advantage of it to obtain more profitability.

### Reply 6:
LOL, I know you can't mine bitcoin with GPU, OP's title is ""China's mining industry"" that industry include Bitcoin, ETH and all other PoW cryptocurrencies, no matter we are on the bitcoin forum or no, that's why I posted my msg. Just to clarify.

### Reply 7:
1. We don't know for sure if this is indeed the case, we don't know if this is temporary, we know only whatever information we are allowed to find out.2. Mining is a business. If a business man cannot do his business in a place, he may stop or may relocate. Mining can go well without China.3. This world is way bigger than China. If China bans mining, it hurts temporarily, but it's good for long term. If China bans the use/trade of Bitcoin, it also hurts, but there are plenty of people in this world, Bitcoin will still be increasingly used and traded. And, as history has already shown, China bans on crypto just don't stay there forever.

### Reply 8:
It is a great thing for miners located elsewhere in the world.I earn <truncated> about 0.01053 a daysoon to be over 0.0132 a day0.0132 = say 450 usd a day vs 358.partner and expenses not included in this

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4188,"Date: 2012-10
Topic: are the ASICs out user friendly?
### Original post:
I ask because computer hardware isn't my area of expertise. I built my desktop from parts, that's about as far as my knowledge goes. is it easy to use with pools?

### Reply 1:
I think the ASICs will be very similar to the FPGAs that have been in use. Plug in power. Plug in USB. Fire up mining software. You're mining.

### Reply 2:
Yeah, pretty much plug and play according to BFL.

### Reply 3:
""out there""? You're implying ASICs are already in the hands of end users and driving up difficulty? Proof please.

### Reply 4:
Does it come loaded with an operating system?

### Reply 5:
ASIC is just the term for the technology within the hardware itself. They will require a host computer, and software to run. The device itself does not function without being sent command to do so. Your buying hardware is all. What the future brings who knows.

### Reply 6:
Dude it totally comes with windows 9 installed and you get a free steam game of your choice too. I heard from this one guy that knows a guy who's little brother already has one and he says that it is way better than a sharp stick to the eye.

### Reply 7:
^ for serious? Damn, I am soo in.

### Reply 8:
Me too.

### Reply 9:
The Avalon ASIC will probably be about as close to plug-and-play as you can get.Perhaps there still will be tech skills necessary (e.g., updating firmware maybe, or ) but it could be as simple as:1.) open box2.) plug power cord into 120V AC outlet3.) plug ethernet cable into router,4.) register online your Bitcoin address for payout (login using claim code sticker on side of unit)5.) profit

### Reply 10:
I believe the Reclaimer ASICs will also be like this: Plug-and-play, not host PC required.

### Reply 11:
There's a number of people asking how user friendly the asics will be. Some even thinking they'll just sit and hash on their own.Make's me think there's be a market for a 'mining buddy', a device with a USB port on one side, ethernet port on the other, running mining software and a web interface to configure it.But I can't be arsed to develop one.

### Reply 12:
Re: are the ASICs out user friendly?No they are notI cannot even get mine to power ontried the various air gap power cables available in my countryALSO the workmanship is terrible seems like there are less parts than there should be :/

### Reply 13:
That would be known as a Raspberry Pi.

### Reply 14:
I love my raspberry pi I've never owned a more useful computer. I have owned plenty of more powerful computers but never a more useful computer. Within just a weeks time I had set it up as a media center, a completely offline bitcoin management device, a wheeled robot, and a battery powered deer trail camera with IR support and night vision. You get 20 years of linux device support in a computer the size of a credit card (no shit, it's the exact size of a CC)And all for $35!I would recommend it to anyone. No matter what you're into, you have something the RPI can do to make your life easier or more fun.

### Reply 15:
Graet,Could you please advise the model of your ASIC? Is it BFL, bASIC, or another?Cranky

### Reply 16:
Wow, R-pi's are user friendly? You can just plug an asic in and it'll run!!???

### Reply 17:
I just wish BAMT supported the Pi. As for other OS's and using the Pi I would suggest adding a bit more power to the USB (they are limited to 140mA by default).Here's a guide:<link> if you like to tinker you can fudge around with the GPIO pins for further control of external devices Not to mention TURBO MODE!<link>

### Reply 18:
They are fairly user friendly, and I do believe that there are several guides here on the forum detailing how to use a rPi with FGPAs to mine. Shouldn't be too difficult to extend that to ASIC control.

### Reply 19:
Post a picture and i'll see if I can help diagnose any issues.

### Reply 20:
seems to easy for any ASIC company to ""steal"" hash power if running their proprietary software. i would prefer to use other mining apps out there.

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13589,"Date: 2018-08
Topic: Antminer S9/S9i firmware - Full voltage/frequency control - No dev fee
### Original post:
IT HAS HIDEN DEV FEEThis firmware is from <link> are identical!!Dev. fee is 1.8%

### Reply 1:
Argh! Ok. Thanks for the heads up. Should've known better than to trust someone from Ebay. Have reverted to standard bitmain firmware on all miners except one which I absolutely need to undervolt in order to stay within the 80% stipulated maximum draw from one of my circuits.Will try out the ""Volt RocketShip"" firmware at <link> instead. At least the code for that is open source!Lesson learnt.

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21234,"Date: 2017-01
Topic: S9 help!!!!!
### Original post:
Hello all,This is my first post to the forum, but I frequently use this as a source for information in troubleshooting.So lets get to the details.I am having 2 issues that are very similar but different. I am going to be as descriptive as I possible can,so I apologize in advance about the novel.Issue 1 Unit will start to boot up, I can access the units main/home interface page but as soon as I click on any of the tabs, miner status/ miner configuration/ network, the unit becomes not reachable, and when I go look at it, it is completely powered off, no front or top LED lights and the front and rear fans aren't spinning, yet the fan on the power supply is still spinningI have replaced the power supply, test voltage output on all the sockets of the previous power supply and they all read 12/12.1 volts, which is right where they are supposed to be according to the label on said power supply.I have changed its Ethernet cable, not that that would really help, but for the sake of troubleshooting, its better sometimes to replace everything that way you can eliminate possible trouble sources.Haven't changed the units power cord yet as it was working properly when the unit was installed.- Ma<rest of post truncated>

### Reply 1:
I can't see the screen cap, can you please upload new ones? and specify batch number, working freq, screen cap of the firmware screen, psu model, etc.

### Reply 2:
I changed the image type to jpeg that might make the picture more view able.Also I have attacked snip-its of the units main status that shows the kernel version firmware version etc. I will hunt down the batch number and reply once I have the informationFirst screenshot is of the unit when its powered off, not sure how much help it'll be but hey more information the better <link> screenshot is of the main minus status homepage<link> screenshot shows the miner status page, which you'll see in the picture that fan6, which I'm assuming in the rear fan, is spinning rather fast but with the Nov 29th firmware version, and several prior to that, you no longer have control over units power setting or fan adjustment, temps seem within operating range, both fans are working properly, units power supply is outputting correct voltage and amperage to each hash board. Only thing that I can really thing of is that either A) the unit gets an error on one of the hash boards and cant correct the error so in order to protect itself it shuts down, or B) the unit get an error on the controller board(IO board) and cant correct the error and to protects itself it shuts down. Those are really just guessin<rest of post truncated>

### Reply 3:
still can't see the pictures, use any other image hosting service besides google, I use <link>

### Reply 4:
Ok I just set up an account on there so hopefully the images will be view able nowThis is the main homepage screen when the unit powers itself of, it may be worth mentioning that I can access the main homepage but any of the other tabs aren't reachable<link> is the firmware version, it has been upgraded to the latest firmware released by antminer <link> shows the status page, as you can see the temps are within operating range, the second, or atleast Im assuming is the second or rear fan, is spinning higher then I would like too see it run at, but with the newest firmware you no longer control over the speeds or power settings<link> thank you for being patient with me

### Reply 5:
I haven't had these problems with my miners, a lot others, but no this ones, I recommend you to open a ticket on bitmain's website and explain the situation, it seems, I'm not sure, the control board, you mentioned they are still under warranty, use it, because after that they charge between 200-300$ for repair any board plus shipping, before that you could try reflash the firmware, or maybe try the stock firmware they came with if you can find it. the fan speeds look unusual, they should be spinning at around the same rpms, when you open the ticket at bitmain's they give you the option to upload screencaps, explain the problem to them, I think is the control board not sure.

### Reply 6:
I am beginning to think that I will have to open a ticket, I was trying to save that as a last ditch effort so to speak.I will try messing around with the firmware but am cautious of that because I've had a few units ""brick"" after doing firmware upgrades.Thank you very much for the help!!

### Reply 7:
this should help and that means you did not shrink your images with auto feature to 1600 by 1200 or less on imgurI redid the bottom one. The fans are weird 2600 and 4900 are too far apart. the rest is good. what is your psu running this miner?It could be good and the psu may just be shit so it powers down after 2-3 hours

### Reply 8:
I was also thinking that those ranges of fan speeds were to far apart also. As for the PSU that I'm using I've tried 2 different typesHave tried the APW3+-12-1600-A3<rest of thread truncated>
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16398,"Date: 2023-01
Topic: Bitcoin's Future: What Happens When the Block Reward is Lower Than Fees?
### Original post:
I was lucky enough to be around Bitcoin mining when the rewards were sky-high and the competition wasn't as fierce. But as time has passed and the difficulty has skyrocketed. It's become almost impossible to turn a profit with mining. I still remember when I first got my S9 and it was bringing in a cool $25-$100 per day, but those days are long gone and the rewards just aren't what they used to be.I've been thinking a lot about what will happen when the block reward subsidy drops below 2 BTC in a little over 5 years. According to the original white paper, the goal was for fees to eventually overtake the subsidy, but there was no specific timeline given. If the price of Bitcoin is high enough to make up for the lower subsidy with miner fees, it could cost an exorbitant amount to send Bitcoin. This could put pressure toward using centralized services like exchanges and WatchTowers on the Lightning Network for using Bitcoin. If the cost of sending Bitcoin remains low, mining will become more and more reliant on cheap electricity.It's hard to predict exactly what will happen, but I'm curious to hear what others think. What do you think will happen when the block reward subsidy is 1.562<rest of post truncated>

### Reply 1:
Economically, it isn't hard to predict what would be the action of miners. If the mining become not profitable, those who are mining just for profit will definitely stop. Those left would be miners who take Bitcoin mining as hobby and does not take importance of profit. I believe Satoshi had a vision that in due time, transaction fee will overtake the reward of Bitcoin in hopes that adoption will do well that miners won't mind getting a fraction of Bitcoin in every block reward because Bitcoin transaction fee is there to compensate .So the Bitcoin mining future depends on the adoption and usage of BTC. If these (adoptions and usage) sector fail, it is inevitable that Bitcoin mining sector will suffer greatly and if it does, we can possibly see a huge decline of hashing power securing the Bitcoin network.As long as the bitcoin price doesn't tank, recover and records another ATH, I think 1.5625 BTC is still sufficient for the miners to sustain their activity.

### Reply 2:
My take is a bit controversial in some circles, but I'd post it here because I really believe in it. Satoshi probably intended the block reward as a temporary subsidy to bootstrap the network and pay the miners until there was enough economic activity that miners have sufficient compensation from transaction fees. So, shrinking block rewards isn't a problem, even if BTC prices don't rise much from here. Just my 2 cents.

### Reply 3:
So in my opinion if Bitcoin Mining fee is more than block reward in terms Of Price The Price will be much higher. My mean that if Bitcoin mining fee is 0.01 BTC per block and reward is 0.01 Btc Per block than Prices of Bitcoin will be skyhigh cause there will be no Bitcoin to mine and there will be no pressure of selling and also bad News regarding Bitcoin. Currently we have been listening to the China Mining Fud and eventually it will be gone by the time.

### Reply 4:
The fact bitcoin will be so difficult to earn should make the price go significantly higher.The fact LN and maybe similar solutions will be used on a larger scale may make tx fees even go lower.So imho comparing the block reward with the tx fees is <truncated> I think that block reward + tx fees should be compared with the fiat cost of mining a block, and then we would see how much one Bitcoin worth.Of course, various modifiers have to be taken into account, from the more performant machines by then to many more using very cheap energy from the sun. Also don't forget the inflation of fiat.But that's all. I don't understand why you've tried to overcomplicate the equation, but I see no problem with block reward going lower than the tx fees, even though I expect that happen significantly later than your predicted time frame.

### Reply 5:
Next halving 2024Block rewards: 3.12When bitcoin halved in 2009 the block reward was now 50 btc every 10 minutes. In the evolution of this time, it will decrease by 2024 and stand at 3.25 BTC every 10 minutes. So you can easily imagine that in the near future if the price of Bitcoin does not increase, the block reward will gradually decrease to almost zero. In this situation, the mining cost will increase a lot by combining the power consumption, electricity bill, space consumption etc. As a result, you have to face losses while mining.Mining future if blocked rewards lower than fees: <link>

### Reply 6:
In fact, the problem of electricity shortage is not all over the world. There are huge surpluses of electricity in many countries, and mining will develop further. Even now, when mining is unprofitable, the hash rate chart shows a reverse trend.

### Reply 7:
Doge will thrive and BTC wil<rest of thread truncated>
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9661,"Date: 2016-01
Topic: About the BlackArrow Compensation for X1/X3 customers : Prospero X36
### Original post:
What a joke

### Reply 1:
So what about people with less than $3/day power who already have PSUs? Also, it looks like they may have finally figured out how to get a Minion to about the 0.55W/GH chip-level that they advertised during preorders. Only took 'em two years. Also what about orders that came through resellers like Minersource and were never filled?

### Reply 2:
Gone to nothing, as is the needless risk you take with resellers.

### Reply 3:
Anybody already read about the BlackArrow Compensation for X1/X3 customers ? : Prospero X36<link> <link> Arrow is happy to announce that has finished the design and testing for our latest miner: Prospero X36 Features: many times cheaper to manufacture than X3 based on the 28nm Minion ASIC 30-40% less power (around 0.6-0.7W/Ghash at the wall) 3x smaller than X3 3x lighter than X3 10-20% faster than X3 boots in less than 1 second more stable external PSUDrawbacks: Louder than X3 No LCD No GUI Designed with cost in mind therefore it is not very <truncated> for X1/X3 customers:With the availability of this new miner we can start providing the promised compensation to most of our X3/X1 <truncated> our current financial situation prevents us from building new miners free of charge therefore we cannot offer these miners for free. For this reason we are offering to almost all our X1/X3 customers more hashing power than we have promised initially but they must pay the manufacturing costs for the miners and we will offer the ASICs for free.Our offer is to build X36 (2.2Thash) for each 1 Thash we have promised in compensation if the customer is paying the manufacturing cost of the miner. Manu<rest of post truncated>

### Reply 4:
nice joke, already paid compensation twice over still received nothing, now they want more. wheres is their US based partner in crime minersource.net / matt carson / bobsag3 in all this? Is he going to provide more photos of his visits to the Black arrow offices again?

### Reply 5:
Is he still working for Oregon Mines? Does Oregon Mines still exist?

### Reply 6:
Why do they even try? Their reputation is shit, they are getting sued, they have proven that they can't build a functioning machine, and on top of that, their customer support is so bad its not even laughable. These are the most worthless bunch of people in all of ASIC Bitcoin land. At least BFL was able to put out a couple iterations of miners before going under, these guys couldn't even build one that functioned! Anyone who sends these crooks anymore money is just asking to be robbed even more. What a joke by a joke of a company!EDIT: OH HAHAHAHA, this isn't even for a miner shipped to you! This is for a miner hosted at their data center, presumably because they can't get the CE certification for it (or it doesn't exist, either way). Well, anyone who ordered their last round of cloud mining remember how it went? I'll remind anyone who forgot, they didn't even start them up and stole all the money! The ones they did start up lasted a couple of months and then they stopped paying out. Greedy assholes. Oh meanwhile, they had been running miners in their own datacenters for months while spouting delays and such as to why they couldn't ship miners.EDIT2: Not to mention, this W/GH rati<rest of post truncated>

### Reply 7:
Laughable that their compensation is miners that are not only more expensive per hash than the last generation of ASICs, but it's actually less efficient as well. Why on earth would someone buy one of these instead of a used S5, or a new S7? How delusional are the folks at Black Arrow?

### Reply 8:
How about they give back the money they stole from me instead?

### Reply 9:
At least some info on new cheap design.It will be interesting to see what they did If all this is real of course

### Reply 10:
Question to BA... what have you been doing for the last year while sorting out this compensation? Apart from stealing from your customers that is.What about the people that you still owe units (not compensation but original orders) to? Will you finally ship them so they can use them as functional door stops?

### Reply 11:
Look at specs: ""30-40% less power (around 0.6-0.7W/Ghash at the wall)"" that is pretty crappy now day's. So they have at least a gen old chips running these ""new"" machines.Also ""We will not be shipping this miner out of China. For foreign customers, in order to use this miner we will be hosting it in our data centre"".... so for everyone out of china you will be paying to host in their data center and they make money on data center.... so quite horrible on that.I would be surprised if anyone want's this gear even considering who it's from.

### Reply 12:
And given their estimated power use, $3 per day plus maintenance is a decent rate but not great. At 2.2TH and 0.6W/GH I can think of several places to host for less than that. I'd pay less running it at<rest of thread truncated>
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16051,"Date: 2021-04
Topic: Bitcoin hashrate reached a new record
### Original post:
According to CryptoQuant data, the bitcoin hash rate reached a new record of 179.4 EH/s today.The event coincided with the price of Bitcoin reaching its second daily high of $ 59,101.Even though there is no direct relationship between price and hash rate, some experts like Max Keiser (broadcaster) believe that price tends to follow hash rate.CryptoQuant CEO says miners continue to collect bitcoins and do not intend to cash out their deposits:""Network fundamentals are getting stronger, and those who make the network strong don't cash out Bitcoins to buy new mining rigs. They buy mining rigs with cash, not Bitcoin.""Source: <link>

### Reply 1:
hashrate has some relevancesome countries whos electric is like 27c/kwh wont mine when price is below $55k as the cost of mining is more expensive than just buying btcso when the price exceeds $55k places like italy start hobby mining from home as its cheaper to mine than to buy anyway heres some numbersincluding a upfront hardware cost of ~$15k/btc(balanced over a 9 month ROI/upgrade plan)electric cost is ~$1.5k per unit-cent increment1cent = $16.5k2cent = $18k3cent =$19.5k4cent = $21k (china/iceland cheapest mining farm(industrial rate))....8cent = $27k (china home hobby miner(domestic <truncated> (UK mining farm(industrial <truncated> (US home hobby miner(domestic <truncated> home hobby <truncated> (italy home hobby miners (domestic <truncated> (japan home hobby miner(domestic rate))what you find out is that belgium, germany, denmark, portugul are not home hobby mining right now and instead are buying coin. its not cheaper to mine for bitcoin(their costs are over $60k)japan was not home hobby mining at $55k but is not mining at $59k as it slipped passed the threshold of profitabiity..what you will find is that germany is the most expensive domestic electric rate on the planet (3<rest of post truncated>

### Reply 2:
So, you mean there is a relation between the price and hashrate?I believe the same way but according to this theory, time after time and by increasing the price of bitcoin there will be more willing to mine, right?

### Reply 3:
Price related or not, I think this is another positive piece of news. If no one was interested in Bitcoin, the hashrate would be 0, on the contrary, with this hashrate we can rely on the security of the Bitcoin network. I bet we will continue to see price and hashrate increases for years to come.

### Reply 4:
this is a narrative that some ""newbie speculators"" have been trying to push possibly out of desperation to find any reason to predict bitcoin price.take yourself for example. if you have money and believe that bitcoin has potential to rise then you would buy bitcoin. however you will never look at hashrate to see what it is to decide whether you should buy or not, doin otherwise makes no sense.take a miner now. the miner looks at bitcoin price and the profit he is making and decides whether to buy more ASICs to mine bitcoin hence increasing the hashrate or shut down his ASICs due to lower bitcoin price hence decreasing the hashrate.so it should be obvious that hashrate follows price not the other way around.

### Reply 5:
but you have to realise WHO increases what.. what causes whatif 99% are making profit. thats alot of sell pressure and not much buy pressureonly those with high costs of mining will see good value in buyingtake germany with a current cost of mining way above $70k. they wont mine at home. they would prefer to save themselves ~$13k+ a coin and just buy it at $59kin <truncated> could happily sell as they can happily mine for profitjapan/italy are in a limbo between profit and lossdenmark, germany, portugal could happily buy as they see market price cheaper than mining cost..if hashrate increases. less will profit as the coins splits leave them with less due to more sharing out. this increases their costs and makes more jump off mining and just buy.. or for the farms.. buy more while mining to support a price increase to keep their mining in profit

### Reply 6:
brew master. that is not quite trueif everyone could mine gold in their back yard cheaper than buying gold.. would they mine or <truncated> the moment no one would stupidly buy bitcoin over $72k because everyone on the planet can mine for cheaper then that.. even germanywhilst miners make a profit they will mine and then sellwhen miners cant profit from mining. they will buy it when its cheapthe buy and sell pressure cause prices to changeyes there is a bit of emotional illogical speculation causing some volatility spikes and dips.. but these spikes and dips of illogical speculation are temporary and correct themselves.if you can loook at the math of mining costs and work out the % at which level.if you can work out the realized value of utxo. you can then work out the 'correction' levels .. and also work out the paper and lower bounds of valuefor instance$21k is the bottom le<rest of thread truncated>
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23786,"Date: 2021-11
Topic: How is PPLNS calculated for AntPool?
### Original post:
Hello. I read that AntPool PPLNS pays reward depending on last N difficulty shares, but I cannot find anywhere what N is. Can you please tell me what is (approximate) time duration of ""last N difficulty rounds""? Or does anyone know reward calculation formula for AntPool PPLNS?

### Reply 1:
You missed the part where they keep all the transaction fees.Their PPLNS is the worst PPLNS possible.

### Reply 2:
Given how low the rewards have been for a while now, it makes Antpool one of the cheapest if not the cheapest PPLNS pool as of now, but I think everyone agrees that Antpool sucks, I wouldn't use it even if it had 0% fees on PPS+.

### Reply 3:
Alas assuming there's no future to bitcoin doesn't really work for anyone.The fees maybe be low 'now' but the majority of the last 5 years and the majority of the future that definitely wont be the case.

### Reply 4:
Thanks for responses, I see a lot of criticism on AntPool, but no explanation how PPLNS is calculated :-)Anyway, can you help me a bit? I understand that PPLNS is based on last number of shares per period. What I read somewhere else it may be ""2.5 difficulty rounds"", which seems strange to me, because it would be about 5 weeks. I assume it is a rather 2.5 block rounds, which would be some 25 minutes. Can anyone clear that?If PPLNS is based in shares in the past and PPS is also based on amout of shares that the miner puts in the system, where is the difference then?

### Reply 5:
All PPS is paying each share an amount that must include a fee of around 3%(if the pool uses a lower fee it has a high chance of going bankrupt)This has zero variance but lower expected reward - the pool covers the mining variance with it's wallet - thus it must have a sizeable wallet.That's explained here:<link> is simply when a block is found, the miners are rewarded for their % of the last N shares on the pool.i.e. PPLNS means pay per last N sharesThe N value is up to the pool, but it must be chosen so that miners can't easily game the rewards(i.e. get more reward per share than everyone else on the pool)This has variance dependent upon the pool size, but higher expected reward as long as the pool isn't charging a high fee like PPS.Most PPLNS includes the transaction fees in the reward, but Antpoo doesn't.... and for those who think variance means a loss, no, it doesn't.It means up and down i.e. sometimes more and sometimes less.

### Reply 6:
And does anyone know what is the N for AntPool, or what is time period of N?

### Reply 7:
So if I understand well, in PPLNS it actually does not matter whether the block is or is not found while I push shares to the pool. All that matters is how many shares I push to the pool over period of time and then I am getting rewards after blocks are found. I do not need to hit the block, I only need to provide shares, right?

### Reply 8:
okay if you are not mining your shares drop off.so you will be punished if you stopped mining on the pool.

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10256,"Date: 2017-04
Topic: Twinfury reset
### Original post:
Hi, i'm new here, i'm having some problem with my 2x twinfury . I can't get them working, on windows and linux too. Is possible to hardware reset them? anyone have any kind of manual of this miner?regards

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    ""hardware_name"": ""2x twinfury"",
    ""hardware_is_owned"": true
  }
]"
10392,"Date: 2017-07
Topic: Bitmain+Bitmain Warrenty Poor communication and service?
### Original post:
Has anyone had problems with Bitmain, trying to get out of warranty work?Very long story short. I bought a R4 back in December/Jan of 2016. Unit caught on Fire right after doing the ant-bleed patch on or around May 1.Spoke to bitmain, for a week or more, They assured me the unit still had warranty on it until June 22-2017, and as long as I mailed it before then we'd be fine. . Fast forward a week Bitmain china stells me they have no r4 stock or items and I will need to work with Colorado. R4 is sent and received by June 9th. Today I get notification form Bitmain Colorado. that They were only able to salvage 1 of my boards, and it was going to be $600 to replace the other board. If the device is under warranty then isn't the burden of the cost of repairs on the mfg? why even have warranty then? as of right now I am 2 months without any hash from the device.

### Reply 1:
Hi, also interested in!And how about warranty/rma when buying from a reseller?

### Reply 2:
I think Bitmain just opened a warranty place in California for units that are in the States to deal with.

### Reply 3:
Considering Bitmain, Canaan, Ebang, etc do not use distributors or resellers any warranty is strictly between you and whomever you foolishly bought it from. In most countries purchasing through unauthorized channels means there is no legal basis to force the manufacture to help so they are certainly not going to honor ANY liability for it. In other words: Yer boned.

### Reply 4:
Bitmain Warranty in Colorado is a paid service. Maybe you could negotiate something with Bitmain Hong Kong for an Antminer T9?I had numerous issues with s9 and R4 hash boards this past winter. I relocated all my gear from home to a data center and have not had one issue since other than a bad fan

### Reply 5:
Bitmain sent me an email saying that they have a place in Los Angles for in warranty repair.Much better then shipping in warranty to China .

### Reply 6:
Yes Phil I got the same email

### Reply 7:
Is this the place you are talking about asking $600 for the board replacement? <link> curious if they are part of Bitmain or if they are independent repair service parts seller or part of Bitmain?I host mine at Giga Watt because of the noise and because they do repairs onsite so very little downtime no shipping. But if you want to sell your repaired unit I'd buy it for heating in the winter. I had one and foolishly sold it this spring getting more than I paid for it and thinking new models would come out but doesn't seem like Bitmain is producing anymore R4 low noise home miners. So if you're trying to decide on paying for the repair or not I'd buy it for $1200 so double your money. To be fair you could get a decent amount more than $1200 reselling it on Amazon or even Ebay, so it sucks you got screwed but it's worth paying for the repair.

### Reply 8:
sigh. ref <link>

### Reply 9:
sigh sorry I took up your time, next time feel free to ignore me I don't like making people sigh

### Reply 10:
Sigh was just because your exact question was answered by me in the reply right after yours in that thread. One kinda expects it to have been seen...

","[
  {
    ""hardware_name"": ""R4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""R4 hash boards"",
    ""hardware_is_owned"": true
  }
]"
22027,"Date: 2017-12
Topic: very quiet after fireware update fan
### Original post:
hello I had problems that he did not want to start anymore.dann I made a software update where I wanted to take the autofreq so he did not run at all and did not start to mine so I took the update with 650 fhz so he runs only the fan is now extremely quiet and he does not even turn upWhere else GH / S (ideal) is always 13500 and now 14000<link> miner stands in the cellar and has suction temperatures of 14 degreesand the kernel logCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO b<rest of post truncated>

### Reply 1:
Please use code tags, the # sign when posting output like that.You don't say what your hardware is...

### Reply 2:
oh sorry i have the antminer s9 13.5 th/s can me someone please help

","[
  {
    ""hardware_name"": ""antminer s9 13.5 th/s"",
    ""hardware_is_owned"": true
  }
]"
10626,"Date: 2017-10
Topic: Minera Code for Settings Please
### Original post:
I am sorry if I'm posting too much in the thread. But for the benefit of others in the same situation. Could somebody help provide the code for Minera in Raspberry Pi? Minera has a dedicated terminal for entering code, including GekkoScience Pac2. This guy's code didn't work for me (fyi)<link> code (THAT DIDN""T WORK - don't try this)(in Minera Terminal one line at a time followed by return/enter key when prompted)cd <truncated> -p git/vthoang; cd git/vthoanggit clone <link> cgminerCFLAGS=""-O2"" ./autogen.sh --enable-gekkomake -j 2cp cgminer <truncated> <truncated> in the old GekkoScience Compac BM1384 thread compiled Raspberry Pi3 code that would setup Gekkoscience AND Minera. I think that could be a super helpful tool. Obviously I am asking for GekkoScience for Dummies type information here, which isn't too far from the truth. Once again, I'm sorry if I'm talking too much here. But I'll ask in case it helps people.

### Reply 1:
I have used the code above, i've had one issue. I can not get cgminer to write cgminer.conf. It crashes. I have to dig & see if it is a permissions issue, I love to blast 777 on files and folders. If you have any tips, please let me know. Thank you

","[
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GekkoScience Pac2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GekkoScience Compac BM1384"",
    ""hardware_is_owned"": false
  }
]"
10310,"Date: 2017-06
Topic: buying mining gear from Jopendi (www.jopendi.com) singapore
### Original post:
the price is very cheap!the site has this info.. It is not so long that there ..do your <truncated> Name: JOPENDI.COMRegistry Domain ID: <truncated> WHOIS Server: <truncated> URL: www.enom.comUpdated Date: <truncated> Date: <truncated> Registration Expiration Date: <truncated> ENOM, INC.Registrar IANA ID: 48Reseller: NAMECHEAP.COMDomain Status: <truncated> <link> Registrant ID: Registrant Name: WHOISGUARD PROTECTEDRegistrant Organization: WHOISGUARD, INC.Registrant Street: P.O. BOX <truncated> City: PANAMARegistrant State/Province: PANAMARegistrant Postal Code: 0Registrant Country: PARegistrant Phone: <truncated> Phone Ext: Registrant Fax: <truncated> Fax Ext:Registrant Email: <truncated> Admin ID: Admin Name: WHOISGUARD PROTECTEDAdmin Organization: WHOISGUARD, INC.Admin Street: P.O. BOX 0823-03411Admin City: PANAMAAdmin State/Province: PANAMAAdmin Postal Code: 0Admin Country: PAAdmin Phone: +507.8365503Admin Phone Ext: Admin Fax: +51.17057182Admin Fax Ext:Admin Email: <truncated> Tech ID: Tech Name: WHOISGUARD PROTECTEDTech Organization: WHOISGUARD, INC.Tech Street: P.O. BOX 0823-03411Tech City: PANAMATech State/Province: PANAMATech Postal Code: 0Tech Country: PATech Phone: +507.8<rest of post truncated>

### Reply 1:
Stay Away!!!They have the Spondoolies ""SP45"" and ""SP50"" listed: <link> <link> were never created by SP-Tech as far as we know, only <truncated>

### Reply 2:
billybit,follow the Finksy tip!!!

### Reply 3:
Please do whatever business you are planning to do only via the official website of AntMiner's manufacturer bitmain here is their link.<link>

### Reply 4:
To our valued customers ,As of May 4, 2016 Spondoolies-tech has ceased operations. It has been a great privilege to serve the Bitcoin mining community and especially our customers. We deeply appreciate the support and faith that you have placed in us and wish you success in your future endeavors. Sincerely,Guy Corem <truncated> a scam :

### Reply 5:
thank you so much for your feedback. will definitely stay away from Jopendi. my simple google search indicates that they are advertising far and wide. hopefully the other buyers will be wary too.i just started reading a bit more deeply about bit coin mining rigs but definitely what your wisdom definitely exceeds my reading by a long mile.thank you again.

### Reply 6:
You are welcome!

### Reply 7:
On top of that, it looks like SP-Tech's website was cloned for a scam as well: <link> <truncated> (Do not go here to buy)Stay far far away ladies and gents

### Reply 8:
That's a dead giveaway. How where they so sloppy, why wouldn't they just pump products actually produced?

### Reply 9:
Because like your Giga Watt,they're just there to gather money,why waste time on ""honest"" <truncated>

","[
  {
    ""hardware_name"": ""Spondoolies 'SP45'"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Spondoolies 'SP50'"",
    ""hardware_is_owned"": false
  }
]"
14551,"Date: 2012-03
Topic: *BTC Poolwatch* - no new dev for now
### Original post:
Hi guys,This is something that I've been working on to solve the pain of having to check multiple pools. (Currently supports 18 different <truncated> If you only entered 2 API tokens, you will see only 2 pools information.2. Green means the miner is alive. Red means it's not responding. One step process to get this working. Enter your API key from the pool website.What does it do?This will be an aggregator for information from all the mining pools you have signed up. If you want to check on the statuses, you only have to hit one webpage, instead of visiting all the different websites.How is the info gathered?The mining pools would have json information which the pool will provide you with a ""API Key"" or ""API Token"". API stands for Application Programming Interface. Basically you will enter this key once and subsequent requests to the server will use this key to pull the information.Is this safe? Should I pass other people this key?This API key can only be used to pull data. It cannot be used to login to your account, or change information on your account.Why is there no login/password?The API keys are stored as cookies on your browser. This simplifies the login/forgot password proc<rest of post truncated>

### Reply 1:
Poolwatch does no longer work with ozco.inA PHP Error was <truncated> NoticeMessage: Undefined index: <truncated> <truncated> Number: 40A PHP Error was <truncated> NoticeMessage: Undefined index: <truncated> <truncated> Number: 43A PHP Error was <truncated> NoticeMessage: Undefined index: hashrateFilename: <truncated> Number: 44A PHP Error was <truncated> NoticeMessage: Undefined index: <truncated> <truncated> Number: 45A PHP Error was <truncated> NoticeMessage: Undefined index: sharesFilename: <truncated> Number: 46A PHP Error was <truncated> NoticeMessage: Undefined index: hashrateFilename: <truncated> Number: 73A PHP Error was <truncated> NoticeMessage: Undefined index: hashrateFilename: <truncated> Number: 74A PHP Error was <truncated> NoticeMessage: Undefined index: <truncated> <truncated> Number: 75A PHP Error was <truncated> NoticeMessage: Undefined index: workersFilename: <truncated> Number: 77A PHP Error was <truncated> WarningMessage: Invalid argument supplied for foreach()Filename: <truncated> Number: 78BTC Poolwatch

### Reply 2:
I'm genuinely sorry to hear about the health issues. Take care of the health, everything else can wait.

### Reply 3:
indeed.focus on getting better.we'll see ya when we see ya!'monkey

",[]
24087,"Date: 2023-02
Topic: Who can help? My husband died and a mining farm remained from him.
### Original post:
Please help me! Maybe someone understands where it can be sold. Or teach you how to use it?

### Reply 1:
try to clarify a little the meaning of your question? what mining is this?and what will you sell, and stay in touch so that your questions can be answered and solved if it's too risky

### Reply 2:
Can you write to me in private messages?

### Reply 3:
Sorry for your loss, but please stay calm and clear everything here so that everyone can give you the best advice, you should not speak to anyone privately as you will most likely get scammed. Of course, I don't mean that TribalBob is a scammer, but if someone sees this chat, they will send a private message to you, and you will easily fall into the trap without even knowing it. You are talking about mining, but we still don't know what your husband has mined and what you need to sell. Please make things more specific.

### Reply 4:
I agree with what was posted before me. Dealing in private (especially at this stage) can get you (too) easily scammed.I advise you wait until users with bigger experience in mining will see this and can guide you into providing relevant information (eg what kind of miners and hardware you have there).It may worth moving this (or asking again) in the Mining Hardware subforum: <link> may want to consider taking a few pictures with those devices (make sure nothing private/sensitive is captured), uploading the images to imgur.com and posting the links here on the forum.

### Reply 5:
The better the clarity of what you want the easier it is for you to quickly get it solved, be precise and explained in an understandable tone the real current situation and the way you want to be helped, this is a community solely for bitcoin discussion, if you're late husband has a mining rig, what do you want next for the community to help you with, remember you need to be careful as well in this period not to fall into hands since you're eager to get help from any end, and sorry about your late husband.

### Reply 6:
Has he been mining before passing away? Do you know if he had friends, family members, children etc he associated with that know alot about the mining or who are also involved in mining business? If you have such who understand mining really well and can be able to manage it then you may let them help you. Unfortunately, Sole Proprietorship or private business like that could be a bit hard to manage if the owner has passed away, so it's usually advisable to sell it off. But if you can find any who can properly manage it then do. If your final wish is to sell the business, you should first of all try to see if there are willing buyers within you country/community. You could use Google to find miners around you, get their contact and ask them if they are interested in buying your late husband miner(or mining business) or perhaps they can teach you how to run the business profitably.If you can't find any then I will suggest you go to this forum section called Mining and possibly ask your question or move this your post there. Here is the section link(I guess for Bitcoin mining): <link> there and ask your questions, it's a Mining-related section Hopefully you will find the right people<rest of post truncated>

### Reply 7:
What do you mean with mining farm? if it is a large scale mining farm then I would seek legal advice and post it for sale on the marketplace for this forum but if it is only the one or two miners you can post it in the marketplace board. You will need to gather the names of the miners and some pictures. Then you can search the marketplace and find the same model that has been sold and you can find out the price to expect from that.

### Reply 8:
You can sell it in the forum marketplace or on ebay. I believe selling it is the best than run it for yourself because you dont know how to operate it. Theres a chance that you cant maintain it properly that will cause damage to the mining rig. Besides bitcoin mining takes a long time to get profit and it requires a lot of maintenance for the rig run smoothly. You will have trouble running it if you have other things like your job.I suggest to sell it here and ask trusted escrow to hold the funds for you so that you will not get scam. Ask @minerjones for help because I remember he is selling goods for someone then he will just ask for a commission. He is the most trusted escrow here in the forum that involves on selling goods.

### Reply 9:
Sorry for your loss and welcome to the platform. First and foremost, be careful that you do not get scammed by anyone claiming to be of help or support to you as this post is very sensitive as it has to do with bitcoin mining and there a lots of people there who knows more about mining and would go to any length to getting it. I would suggest you ignore any message sent to you in respect to this post requesting your attention for purchas<rest of thread truncated>
",[]
21475,"Date: 2017-07
Topic: Mining on a Raspberry Pi 3 Model B using Raspbian desktop
### Original post:
So I am very new to using a Raspberry Pi. This whole project is a learning experience for me. I have downloaded Raspbian onto my micro sd card and have the Pi up and running. There were two download options for Raspbian. I downloaded the one with ""desktop"" not knowing what that meant. my running Pi has a desktop like interface, so I can only assume the other download option would have been just the terminal for running code. This desktop version is very nice for me to transition over to, but will it complicate mining? Should I have downloaded the other Raspbian with just the terminal? Also, I have been following the steps on <link> for setting up the Pi, but have hit a wall within the section ""installing BFGMiner"". I have done up to ./autogen.sh successfully, but for the next step, I am asked to access the configure section through ""./configure"" to setup my personal mining address, but it comes up saying ""no such file or directory"". I am not sure what I have done wrong, or if the new BFGMiner has changed and I am following an outdated instructions list. Whatever the case, I need help.More info: I have usb Block Eruptors to plug into my usb hub and mine. All of the hardware is accou<rest of post truncated>

### Reply 1:
Block eruptors wont be enough hasrate to register on any decent pool so you probably wont ever get a payout from a pool. Bitminter is a smaller pool which may offer a decent compromise as you set uo an ""account"" and they keep hold of your coins until you reach the payput threshold. But with block eruptors you will be waiting for a very long time. On a different note i use the ""desktop"" type raspbian and run a terminal screen within it just like you would use a command prompt window on windows.

### Reply 2:
In response I used this french site to configure mine:<link> Just do a translation and you should be OKcd <truncated> chmod +x ./configuresudo ./configure CFLAGS=-O3"" --enable-scryptsudo makesudo make installsudo ldconfigIf you dont want it to start when you boot the RPI3 skip ""tape 5""/ Step 5like the other said just open a terminal and put cd /bfgminerbfgminer -o xxxxxx -u user.worker -p 123

","[
  {
    ""hardware_name"": ""Raspberry Pi 3 Model B"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""micro sd card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb Block Eruptors"",
    ""hardware_is_owned"": true
  }
]"
16117,"Date: 2021-08
Topic: Metal Stand Blueprint for asics?
### Original post:
Hellow. I want to make a metal stand for my asics and maybe someone have some kind of a blueprint, or simple drafts of such a stand? Want to make good looking and usefull. Please help Have all the needed equipment to make from metal - rolling, cutting, even painting oven :-)

### Reply 1:
You might want to move this to the mining board to get more of an input for what active miners are using - the move button is at the bottom left. I've seen a lot of people use just normal shelving units you can find in most places (like the ones shops use) but a lot of them seem to have slats in them to allow for better air flow.

### Reply 2:
I couldn't find any blueprint but why not make simple as this design below?You can use this as your reference.Then look at this

### Reply 3:
Why not use a good dissipater of heat? Probably not fully metal frame but a ceramic tabletop that could have better thermal conductivity and can resist high temperature that could damage the table in the long run. I don't think you need a special blueprint, just possibly a plan on how you will set up your Asics and how many will be placed on a single layer, etc. Reverse engineer it and then make the necessary measurements.

","[
  {
    ""hardware_name"": ""asics"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""metal stand"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""shelving units"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ceramic tabletop"",
    ""hardware_is_owned"": false
  }
]"
16371,"Date: 2022-11
Topic: Should I take this BTC mining advice?
### Original post:
A friend warned me not to try running my own BTC node, he said he had a bad past experience with this one thinking he was smart but on the long run solo mining on pools are the best he said.. Is this true?My second question is What is the best Asic Miner that I can run for Solo mining Bitcoin? Electricity is just wasting away here and I am not in any rush to make some BTC.

### Reply 1:
Solo mining to pools that have a low fee is better then running your own node and dealing with all the other things needed to do it, like setting up a stratum / pool server and everything else.As for solo mining in general, there are arguments for solo vs PPLNS vs PPS mining. Each has different benefits and costs.Solo tends to have the best fees BUT it can take years to find a block depending on the speed of your miners all the while you are making no BTCPPS has the highest fees but you get paid consistently even if the pool has an unlucky time and finds no blocks.PPLNS (and it's variants) on LARGE pools is the best compromise. Usually lower fees then straight PPS, and so long as the pool is large enough consistent payments.You can use a site like <link> to figure out about how much you will generate with each miner.Don't forget to keep in mind difficulty increases, and everything else that may change.-Dave

### Reply 2:
I heard Caanan and Bitmain are good providers. Pretty sure some miners also post reviews or questions on this sub-board so you can take your time browsing here. Buying the miner is probably gonna take some time, with delivery being a problem for some people. Make sure you double-check the seller if you're not buying directly from the provider.

### Reply 3:
The thing is you can decide to go ahead with the lesson that your friend has shared with you about his experience, or if you doubt your friend and sense that he is just trying to discourage you out of selfish interest, thinking that if it is not so profitable, why are people still trying to run their own btc nodes?, you may still want to find out on your own, but that may not be the wise thing to do. The experience may end your mining career.

### Reply 4:
I think you're mixing 2 different things. Running Bitcoin full node means you run software which used to download and verify whole Bitcoin blockchain. You could use certain Bitcoin full node software to get block template to be mined and broadcast mined block. But using solo mining pool (such as <link> means you don't need to run full node and can utilize their fast network to reduce chance your block become orphan/slate.So running full node by itself isn't bad thing. But using solo pool for solo mining offer several advantage.Other member already provide good answer/resource. But what exactly do you mean by ""just wasting away""? If you say that because there's minimum electricity usage on your building, you'll need to know most ASIC has few thousand watt which could easily surpass the minimum usage.

### Reply 5:
I think your friend experience the same thing happening to me in installing and having full node and setting it up to mine solo. It's very stressful on the first time you set up the full node in the end your hard drive is full you didn't't think that the full nodes need to download the whole block chain to be fully functional and to mine solo. So in the end setting up your miner directly to the pool is much easier than having your own node. I guess your friend only mine for lottery so the best miner for solo mining currently is Compact F USB stick miner or for a little bit faster Futurebit Apollo take note of this one it has built-in full node.

### Reply 6:
how did he justify this to you? what was the reason? i would prefer the solopool for convenience, because i don't want to buy extra hardware to run a full node.

### Reply 7:
Indeed, for solo mining in the pool there is no need to launch a full node, you can simply and easily set up a miner for solo mining, for example on solo.ckpool.org

","[
  {
    ""hardware_name"": ""ASIC Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compact F USB stick miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Futurebit Apollo"",
    ""hardware_is_owned"": true
  }
]"
9869,"Date: 2016-06
Topic: Where to sell my S7 Miners?
### Original post:
I have 4 S7 Miners to sell, not really sure where is the best place to sell them?

### Reply 1:
<link>

### Reply 2:
Amazon or eBay. Plenty of people willing to buy from there. I've seen miners go for 100 over the price they are here at the forum. Amazon has less volume for miners (I think), but either way, these two are the best options. Most people look for a listing with free shipping, so raise your prices accordingly. Of course, if you'd like to cash out in Bitcoin, there are plenty of people willing to buy with escrow here. S7s are in high demand right now, so either way, your miners should sell pretty quickly.

### Reply 3:
Be careful on Ebay as sadly there are bad buyers out there. With forum you will get a lesser price but you know buyer is good depending on user/history. With Ebay keep in mind paypal/ebay fees add up. But still most likely is higher price there then forum.I suggest doing a buy it now and take offers as it allows you to kinda pick buyer with good feedback. (If someone pay's the buy it now then not so much). Just be very honest on listing on condition and use pictures of unit to help prevent issues.

### Reply 4:
I have sold all my ASIC miners (about 15-20 since 2013) on Ebay & had no problems,of course I only sell to those with at least 20 POSITIVE feedbacks & post NO RETURNS on those auctions You can cancel bids from anyone & bar bidders from your auction at any time

### Reply 5:
You can not cancel the last few seconds bids.

### Reply 6:
You can cancel the auction but it can be quite a pain. If a ""bad"" buyer get's the winning bid right before closing or through buy it now huge pain. Last one I canceled was a code for a computer game I got for buying video cards. The buyer said something about unauthorized bid.... and I had to wait like 1.5 weeks-2 to get fee's taken off my account for a sell that did not happen. The buyer did some sort of unauthorized bid (might have been unauthorized payment been a bit) in paypal side but not on ebay side so it still showed as valid sell on ebay. The buyer did not push button he agreed sale did not go on ebay just paypal. So I had to wait for me to win by no contact from buyer.... all over a few dollars on ebay fees.But overall I would agree you can do decent selling old gear on ebay. I personally keep it till I almost cannot mine profitably at that point I sell to ""free"" or super cheap electricity users. This also makes it where I'm not selling a super high/new high dollar miner. Which helps limit possible loss.

### Reply 7:
Never had an issue myself...must be lucky I post this in my auction description & vet ALL bidders (check their feedback) & I send a PM to them ASAP & expect an answer ASAP,if not BANNED ""If you have less than 20 positive feedback,I will contact you.Communication is the key to bidding on my items.No/slow reply,your bid will be canceled.""""Please have an understanding of what you are purchasing and the nature of cryptocurrency. I will not be responsible for user error in the setup or operation of this device.""""No REFUNDS,sold as is.""

### Reply 8:
ebay final value fee for miners are 10% , also if you set up the shipping fee , ebay taking 10% from that too ...if you sold your miner for 500$ + 20$ shipping , you have to pay 52$ fees to ebay .

### Reply 9:
And another about 4% to PayPal. Set the price 1/7 higher than you want to actually get.

### Reply 10:
I hear horror stories about selling items on eBay, however, I've only ever had a mostly positive experience.I think I've sold 4 or 5 S5s and maybe 4 or 5 S7s using eBay and only had to cancel 1 completed sale after not receiving payment. All I had to do was relist the miner and it sold right away.One thing I would say is keep an eye on the fees. 10% from eBay and 3% from PayPal. eBay bills monthly rather than collecting at the time of the transaction. I imagine this is setup so that PayPal can get 3% of the entire sale rather than 3% of take away.Doing free shipping I expect to walk away with ~$415 on a $500 listing. Those fees add up quick.If you sell on the forum I'm sure you can secure escrow for less than the PayPal fee and completely avoid the 10% eBay fee. I'd guess you have a better shot at getting a serious buyer as well, eBay is swimming with newbs.Edit: I would also recommend using fixed price rather than auction style listing. eBay is quickly turning into another Amazon, with the focus being less and less on the auction side of the house. I think fixed price listings average 20% higher sales price when compared to auctions. With miners it lets buyers 'click now' rather t<rest of post truncated>

","[
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    ""hardware_name"": ""S7 Miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S5s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""video cards"",
    ""hardware_is_owned"": true
  }
]"
17001,"Date: 2011-12
Topic: Need help, messed X up...
### Original post:
Have remote rig (ssh in from Mac) with Linux 11.10 and get <truncated> export <truncated> xhost +No protocol specifiedxhost: unable to open display "":0""miner@miner2:~$ sudo aticonfig --odgcNo protocol specifiedERROR - X needs to be running to perform ATI Overdrive(TM) commandsI've run aticonfig --initial, removed and reinstalled fglrx and xserver-xorg and tried reconfiguring xorg but it all ends up the same. Any suggestions? (I won't have physical access to the rig for over a week)Here is <truncated> cat <truncated> ""ServerLayout"" Identifier ""aticonfig Layout"" Screen 0 <truncated> 0 0 Screen <truncated> RightOf <truncated> Screen <truncated> RightOf <truncated> Screen <truncated> RightOf <truncated> <truncated> ""Monitor"" Identifier <truncated> Option ""VendorName"" ""ATI Proprietary Driver"" Option ""ModelName"" ""Generic Autodetecting Monitor"" Option ""DPMS"" <truncated> ""Monitor"" Identifier <truncated> Option ""VendorName"" ""ATI Proprietary Driver"" Option ""ModelName"" ""Generic Autodetecting Monitor"" Option ""DPMS"" <truncated> ""Monitor"" Identifier <truncated> Option ""VendorName"" ""ATI Proprietary Driver"" Option ""ModelName"" ""Generic Autodetecting Monitor"" Option ""DPMS"" <truncated> ""Monitor"" Iden<rest of post truncated>

","[
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    ""hardware_name"": ""Mac"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Linux 11.10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fglrx"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""xserver-xorg"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI Proprietary Driver"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Generic Autodetecting Monitor"",
    ""hardware_is_owned"": true
  }
]"
17195,"Date: 2012-07
Topic: 1 BTC reward for help with BAMT settings
### Original post:
Can't help much here...but i have a 5879 on BAMT doing 438MH/s. 950/350 at stock voltage with temp 60.What can't you configure?? What is your problem with getting it overclocked?

### Reply 1:
I am confused by the 3 profiles that go with every GPU. Not sure what to change, or which is being used. Then when I run 3x 5970's, it just multiplies the confusion.

### Reply 2:
ok, so you 3 values. you change the 3rd value, that's for the ""when mining"" settings.just uncoment the line and had your values.i.e you have this:# core_speed_0: 300# core_speed_1: 800# core_speed_2: 980Change it to this:# core_speed_0: 300# core_speed_1: 800core_speed_2: 980Make sure you take the # and the space. Then hit restart mining, and see how it goes. Hope it helps.This what i have in mine bamt.conf: # core_speed_0: 300 # core_speed_1: 800 core_speed_2: 950 # mem_speed_0: 300 # mem_speed_1: 300 mem_speed_2: 350 # core_voltage_0: 1.125 # core_voltage_1: 1.125 # core_voltage_2: 1.125000 # recommend to set and forget fan, preferably at 100 fan_speed: 100

### Reply 3:
Sweet.....I will try this when I get home tonight. If it works, you get the bounty!

### Reply 4:
ok, thanks.if it works - <truncated> , and report back the results.if it doesnt report back anyway, someone with more experience than me can help out.

### Reply 5:
That did the trick!I will send you one shiny BTC in the morning when I am back in front of my hot wallet!Thanks!!

### Reply 6:
Sent!Thanks again for the help.

","[
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    ""hardware_name"": ""5879"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""5970"",
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]"
17037,"Date: 2012-02
Topic: Two 5970s with Very Different Hash Rates
### Original post:
make sure load is 99%. Most AMD cards will kick in thermal throttling by cutting the load. 825MHz at 80% load for example is going to underperform 825 MHz @ 99% load.

### Reply 1:
Thank you in advance for stopping to look at my post.I mine using Bitminter's Java client, and up until a few days ago, I used an AMD 5970, which was giving me about 745 MH/s at 825MHz.Then I swapped it out for an XFX 5970 Black Edition. The only reason I swapped is because the XFX has an Accelero Xtreme 5970 cooler installed, which is substantially quieter.When running the XFX at 825MHz I only get about 670 MH/s. So at the same clock speed as the AMD card, the XFX does about 75 MH/s less.I'm running Win7 Pro x64 and using Catalyst 11.10 drivers.Has anybody here seen this sort of hashing speed difference between two video cards of the same model clocked at the same speed?Thanks,WP

### Reply 2:
how does one keep the load consistent at 99% through just the bitminter Java?

### Reply 3:
Also would be good to know exactly what SDK version you're using. I know you posted before that you might have changed the catalyst drivers.

### Reply 4:
DAT, thanks for the reply. The load on both GPUs bounces between 96% and 98% with a temp of about 65C. Strange that it's not 99% like the old card. I guess I'd expect about 30 MH/s less than the old card at 96%.Good thought, ZD84. Does anybody know if this is possible with Bitminter, or any miner, for that matter?Eveofwar, thank you also for the reply. I was able to verify that I was running 11.10 on my old card. I am running 11.10 on the new one, as well. Is that what you're referring to when you say SDK?Thanks,WP

### Reply 5:
I think Eveofwar was referring to the AMD APP (or Stream) SDK, whereas you provided the versions of your AMD Catalyst.

### Reply 6:
It looks like I'm using APP SDK 2.5.775.2. I have no idea which version I was using with the other 5970. Does anybody here know whether that version number indicates that I should change something?Thanks,WP

### Reply 7:
Eveofwar and bravetheheat, thank you for pushing me in the right direction. I found the rest of the answer in a similar thread.Any help? - 5970 not hitting ~700 mhash/sI followed ssateneth's instructions in the second post to extract and install <truncated> from <truncated> After rebooting, the two new GPUs showed up in BitMinter's list. Using those, I'm getting about 745 MH/s now.Thanks again!WP

","[
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    ""hardware_name"": ""AMD 5970"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""XFX 5970 Black Edition"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Accelero Xtreme 5970 cooler"",
    ""hardware_is_owned"": true
  }
]"
11958,"Date: 2012-07
Topic: How to setup Phoenix to 5970
### Original post:
Using phoenix miner, can't seem to get over 320Mhash, its only utilizing one corewhat parameters do I need to set in the .bat file to use both cores and get the maximum HASHrate?just installed the latest catalyst driversmain video card in system is nvidia

### Reply 1:
well, it's 2 devices?so you have to use device=0 and device=1, two instances of phoenixbut latest catalyst drivers aren't good, especially since im assuming it installed the latest openCL too

### Reply 2:
My list is as followsDEVICE 0: Cypress1: Intel core i7Platform0 NVIDIA1 AMD

### Reply 3:
Wrote the config file based on the example DOC and the main phoenix 2 thread and still not working, starts up and shows [DISCONNECTED]

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    ""hardware_is_owned"": true
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    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Catalyst drivers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Nvidia main video card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""OpenCL"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cypress"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Intel core i7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Platform0 NVIDIA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AMD"",
    ""hardware_is_owned"": false
  }
]"
23713,"Date: 2021-09
Topic: New to me; (used) Bitmain T17 error
### Original post:
Socket connect failed: Connection refusedWon't mine. I have reset, updated hardware, worked on ip addresses, checked and rechecked all pool links and worker info, along with everything else you can possibly of. Reset to factory settings. Reset internet a thousand times. Made sure all firmware was up to date. I am at a loss. Here is the Kernel Log.Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> 0 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated><rest of post truncated>

### Reply 1:
Have you noticed the error from your kernel logs?I suggest you edit your post it looks messy you can use a code tag you can find it when you edit the post with the # icon.Look at this logAnd how did you get the error ""Socket connect failed: Connection refused""?Is this the whole kernel logs?According to your above logs, it seems you have a defective fan. If you already upgraded it to the latest version try to flash it with an SD card flashing you can follow the guide this link below- SD card control board program recoveryAnd you can download the SD card firmware from here ""Bitmain SD card firmware""Take note there are 3 different SD card firmware make sure to download the right firmware to your miner check carefully the unit model of your miner before you flash it with SD card.

### Reply 2:
I think you'll find the OP is referring to the overview screen for this message (rather than kernel log). That's the standard message you get while the miner is booting up (before it starts hashing).But as BitMaxz has correctly pointed out, you have a defective fan. Code:2021-09-29 19:29:54 <truncated> Error, fan lost, only find 3 (< 4)2021-09-29 19:29:54 <truncated> fan_id = 0, fan_speed = 60002021-09-29 19:29:54 <truncated> fan_id = 1, fan_speed = 60002021-09-29 19:29:54 <truncated> fan_id = 2, fan_speed = 02021-09-29 19:29:54 <truncated> fan_id = 3, fan_speed = 6000^^^ Here it is actually telling you which one is faulty, however you'll find when you open up the top and look at the control board (where the fans connect) the numbers will be offset (by 1) to the kernel log info. On the control board, the fans will be numbered 1,2,3,4 however they do run in the same order, therefore:Kernel Control Boardfan_id 0 = fan 1fan_id 1 = fan 2fan_id 2 = fan 3fan_id 3 = fan 4So in this case, 'fan 3' on the control board is your defective fan. If you want to confirm before ordering a replacement, you could swap '3' and '4' around, then reboot the miner to check the kernel now reports the fault<rest of post truncated>

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    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  }
]"
23194,"Date: 2020-01
Topic: ""MP TEST FIRMWARE!"" on S17 / T17 series control board?
### Original post:
Hello all,I booted up an S17 / T17 control board that I bought through bitmain from <link> the main page when I log in with root/root I see ""MP TEST FIRMWARE!"" in big red letters. Take a look:<link> (p.s. the ""Locate"" subtab from newer firmwares is missing here)<link> when I click on the ""Network"" tab, an additional ""Quality"" tab appears (of course, the board is not attached to any fans or hashboards):<link> is pastebin with kernel log:<link> doesn't really matter to me since I had to overwrite by upgrading to the latest T17 firmware anyway, but I was curious about what this MP TEST FIRMWARE might be or if anyone has seen it before. Looks like the compile time is in HKT timezone rather than CST; I haven't seen that before. Thoughts?

### Reply 1:
They might be accidentally sent you a control board that is used for testing firmware?I tried to find it on the Bitmain site but it seems that this is a unique firmware. Never mention even in google.How about trying to test it with hashboard and connect it to the internet let us see if there is a difference between default and mp test firmware.Also, check the ssh if you can access it.

### Reply 2:
Shit .....1970-01-01 00:00:44 <truncated> This is fix-freq version

### Reply 3:
When something like this happens, you should just hold to it and do nothing, preferably turn off the thing and wait for instructions. This could have been a giant discovery, but you already ruined it.My thoughts? Don't post to the forum after the fact.Of course Bitmain made a mistake shipping you that, that's what makes it valuable...

### Reply 4:
Agreed, i might have underestimated what the test firmware might have and can do, i think i said what i said mostly to make tim feel a little less bad since Artemis3's post was a bit too harsh IMO.With that being said, let us try to find that firmware, i will try to order a control board ( the same one tim bought) and see if we get lucky, will also try to contact my chinese suppliers to see if anyone has a clue.

### Reply 5:
Hey guys, I appreciate your interest. I should have mentioned that I ordered several with the same ""MP test"" firmware so that shouldn't be an issue, it's not like I only had one which is now gone. It was just when I was pre-flashing T17 firmware for a customer that I noticed and made the post.So with the above in mind, all is not lost, I don't actually have any S17 / T17 hashboards physically with me so I can't test that, but I can do some tests on it or sell one to you guys if you really want.But also, SSH is enabled on it, I downloaded most of the filesystem if you guys want to take a look: <link> here is the HTML source of quality.html : <link> and here is <truncated> : <link>

### Reply 6:
If SSH is actived... is error from bitmain !Thanks for yours files !!! good job, i d'ont have S17/T17 for test

### Reply 7:
That is great news, half the problem is already solved. did you manage to back up the whole firmware in a flush-able format where others can flash it on their T17/S17 boards to test it? if not then could you please seek some help from thierry4wd , taserz or any other firmware savvy?if you are not willing to do that, I might just buy the control board from you and have it sent to however is willing to extract and test the firmware.

### Reply 8:
I have done compiling custom bmminer binary, that's about it. So if anyone wants to give me tips on making a flashable version of firmware that would be great. But I don't see how it would help if all stock S17/T17 miners only accept signed firmware files anyway.I already am selling the control boards on ebay (factory new condition) and pre-flashing the firmware for my buyers, if you're serious about buying one, it would be no extra cost and I'll just leave the MP test firmware on there.

### Reply 9:
Were you able to make a flashable firmware version out of the files that tim shared??I have asked taserz to check this thread as well, if taserz or thierry4wd were able to make a flasheble version from the files you shared then there is no need for me to buy the control board as i mentioned early I have no actual use for it, if thierry4wd or taserz need that control board to extract a "" flashable firmware version that doesn't shit the bed"" I will buy one for one of them,or whoever is willing to do that anyway.again I am doing this for the community in the first place, so i hope that one of the fine gentlemen here is willing to spend some time to do this for free for the community as well.

### Reply 10:
It's not a test firmware or anything guys lmao. You all getting all willy nilly thinking you can reverse it. It's the same copy of cgminer that is on the official firmware too...You are on their beta firmware. It's pretty much the same as the May firmware for S17... It's nothing special. If you want I can give you the SD card image of that firmware from bitmain factory to SD card flas<rest of thread truncated>
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    ""hardware_name"": ""S17 / T17 control board"",
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  {
    ""hardware_name"": ""S17 / T17 hashboards"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
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]"
17126,"Date: 2012-05
Topic: 3 x 6970 in Windows...Help needed (.5 BTC bounty)
### Original post:
Have you tried to run 3 different instances of guiminer? I can't even get it to work with 2nd tab opened in one instance.

### Reply 1:
Check your driver version (I like 11.8, no dummy plugs needed).Make sure you are selecting the appropriate DEVICES in GuiMiner (Cayman 0-1, 1-1, 2-1 etc), when setting up the 2nd and 3rd card mining Tabs.No Crossfire Fire.

### Reply 2:
Try installing OpenCL manually (I had to on all my <truncated> my location for 11.12...also no need for dummy heads.Also, make sure python is installed [if you are using poclbm or something].Good site for automatic installs:<link>

### Reply 3:
Bounty goes to BitLane BitLane, please send me your BTC address and I will send you .5 BTC. Be advised that I will not be able to send until later today because I need to buy a new network cable. After you post your address, I will post again after I have sent the .5 BTC. I think you got lucky I was very tired last night and made the dumb mistake of opening 3 tabs but NOT changing the devices from Cayman-0 to Cayman-1 and Cayman-2.Thanks for the easy fix!

### Reply 4:
Glad to see you got it fixed. Although I didn't offer up the advise for the bounty, I will accept it none the less <truncated>

### Reply 5:
If I could offer up 1 more small, but hopefully relevant piece of advise ? (no charge....unless you think it's worth <truncated> GUIMiner and get on the CGMiner train.I use it on all my Win7 x64 machines and it rocks. It has the ability to use a config file, but I still find it easier to launch it from a BAT file.1- Create a new TXT file in Windows.2- Paste in the following (change where needed)3- Close TXT File, SAVE, RENAME the file something.BAT (have 'hide known file extensions' disabled, or it will remain a TXT file, regardless of extension)4- Right-Click the BAT file, choose EDIT (opens in Notepad), Make the required changes, adding your POOL, USERNAME, PASSWORD, GPU Clock Speed (replace XXX). CLOSE/SAVE5- DOWNLOAD the latest CGMiner (2.1.2) for Win32 (no x64 version, doesn't matter, runs fine). Unzip it anywhere you like.Thread - <link> ......... Direct Download Link (From Developer) - <link> CUT/PASTE the something.BAT file into your CGMiner directory and Double-Click it.....VOILA!The above CMD is set to run MEM @ 300Mhz and your Target Temp with Auto Fan control at 69C, but these values can be changed also.Regardless of whatever driver, the CMD is also set to run on a sing<rest of post truncated>

### Reply 6:
.5 BTC sent about 10 seconds ago BTW, Ill try out the CGMiner sometime soon.

### Reply 7:
GOT IT ! thanks.As far as CGMiner, make sure and give it a try. You will LOVE IT.

### Reply 8:
No problem

### Reply 9:
agreed, but I still use the config file:start /affinity 1 cgminer -c myconfigfile.conf

### Reply 10:
+1 made the switch a few months ago and will never look back.

### Reply 11:
works great.

### Reply 12:
would you mind repeating these Win 7 instructions for a solo miner? thanks in advance.

### Reply 13:
The above will work with SOLO or POOL mining.Do you already have your Bitcoin APP running in SERVER mode (Server=1) in the bitcoin.conf file ?Before you do anything, make sure you have a proper bitcoin.conf file setup.Are you planning to run 1 wallet/app for multiple machines to connect to on your private network ? (personal mini-pool type of setup, which is what I do) ?I run 4 mining rigs pointed at a single wallet/app for SOLO mining.Clarify a bit and I will help you get setup.

### Reply 14:
I have 4 6970's, with guiminer I get 386 mhash. With cgminer I get 420-440 mhash. You definitely don't want the crossfire bridges connected. And no dummy plugs are needed thats for linux. Are you sure the miner is not set to mine on one gpu, it can auto reset itself sometimes.I would start with removing the cards. Put one in run it, install another reboot and so on. I would also uninstall catalyst. And just install the cc drives without the full catalyst. Make sure its version 1.11 or lower. If you try cg miner, make sure to use this shortcut to run it, or all your cpu's will be maxed out. Put this phrase into the target of the shortcut <truncated> /c start ""cgminer.exe"" /affinity 1 <truncated> (assuming cgminer is located in your c: folder)Its clearing a driver issue if you are indeed selecting the proper devices in guiminer. It is not a setting that can be changed. Also your power supply is going to be working overtime. I burned up a 1000 watt with 2x 5970's which draw about the same as your setup.

### Reply 15:
bitcoin.conf for Solo Mining. REPLACE BOLD with your own. Pay close attention to RED BOLD for further setup required.This file needs to go on the Bitcoin(D) server/app location/machine that others will be pointing to.....Win7 botcoin.conf default location = <truncated> this is in place, run your Bitcoin App on your Server and point all miners to it's internal IP address using the pre<rest of thread truncated>
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  {
    ""hardware_name"": ""network cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Win7 x64 machines"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""5970"",
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22478,"Date: 2018-03
Topic: Hardware issues with Antminer s5 - Specific red lights need help with diagnosing
### Original post:
Hi guys,Fairly new to mining and first time posting.In short I recently bought a second hand Antminer s5 as a cheap introduction to mining.It worked, as far as I can tell, 100% for the first period I had it. However now it displays some red lights and a lot of hardware issues on my miner status screen.It still mines and at times still hits 1.1TH (full capacity) but it can drop down to zero for a few hours at a time before kicking back into gear.For example today it has averaged 300GH/s for the day and for the last hour about 950GH/s. So it still mines,just not at 100% efficiency or consistently.So there is a red light behind the front left and back right PCI connectors (If you are standing facing the fan and ethernet slot) and also one on the green hashing board on the top side, it is situated by the Antminer logo, I believe it corresponds to D5.Haven't had any luck online finding what the lights correspond to.Pictures are attached.Thanks for any help guys.<link> note: This post was edited by frodocooper to remove inline image tags.)

### Reply 1:
Well first good idea starting small I did the same with s5's last June. What I found though is that these have had many hard years of abuse. The best thing you can do is monitor your temperatures and see if maybe things aren't getting to hot causing it to shutdown. You can also remove the casing and look for anything that appears loose or faulty.I did notice a bit of dust to, no where near as much as mine came with but it might benefit from a good cleaning

### Reply 2:
Post pics of the miner's gui status screen. That may help.

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  {
    ""hardware_name"": ""PCI connectors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""green hashing board"",
    ""hardware_is_owned"": true
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]"
14029,"Date: 2011-05
Topic: 2 card not a 100%
### Original post:
I have 2 6850 card running in my pc.The first ( device 0 ) is working between 98 and 100%, the second one is working between 90 and 95 of gpu usage, can i make it work at 100%.The problem happens with phoenix and guiminer ( both with the same setting )

### Reply 1:
IMO, no.there is no way to FULLY[100%] saturate GPU.

### Reply 2:
I understand, but why dont they give me the same hashrate at least? one is over 220 and the other over 210

### Reply 3:
maybe different firmware ? [with different throttling and ram timing settings. for example]maybe some was colder/warmer, maybe some pools[if you mine in pool]distribute load not so .. good.

### Reply 4:
I have two 5870's and experience the same. The second card is somewhat slower than the first one. Its hashrate is not stable, sometimes it gots lower, while the first card (MASTER) runs at 99% all the time with stable maximal hashrate.I think it has started since I tried to test CrossFire. Even when removed, still there is the influence.Another cause may be that the slower card is in the PCIe 4x slot, while the master uses 16x.

### Reply 5:
Are you using an Agression level of 11 or 12?Secondly try to reduce as much graphical rendering on the desktop as possible (e.g. turn off Aero if your using Win7 or Vista, turn off widgets etc.)My cards run at 99% at agression 11 or 97% at agression 7. I have 2x 5830's and 2x 5850's in another PC under Win7.

### Reply 6:
Im using agression 11, the problem is with second card wich doesnt have graphical rendering ( there is not even a monitor plugged )

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    ""hardware_name"": ""5870"",
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  },
  {
    ""hardware_name"": ""5830"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5850"",
    ""hardware_is_owned"": true
  }
]"
24044,"Date: 2022-11
Topic: HELP PLEASE -Lost ALL my miners after internet outage?
### Original post:
HiI noticed seven of my remote s9 miners were off online and when i looked up there was an internet fault in the area that lasted 14 hurs outage. (Virgin Media) and never had problems before)I have just been to location and some were just ticking over/not mining, some where totally dead so i checked main 13a fuses and they had blown?I replaced them/tried new leads and had 3 go BANG when the PSU's blew?I now have 2 miners that i am running, but both are just ticking over and getting tuner failed, there is not any voltage being displayed on monitir screen when it tries to tune either?Plus sometimes i get this error message -'Hashchain refused to start I2C error', sometimes i do not, plus its random on 2 miners.All are running BrainsOS+ and are a mixture of cards that i know brains does not like......But i updated them to Brains a few weeks ago and all has seen fine since this outage.I have brought 5 miners to my location on my network now and i'm fetting the same results??Any ideas?I'm running one now at mine at its TUNER FAILED but it did not even display any <truncated> knwo where to start here tbh... But i know Brains does not like mixing control boards/cards and this is what thes<rest of post truncated>

### Reply 1:
Just tried each card individually and disabled cards not used and getting -'Hashchain refused to start I2C error' ?This miner has ran for several months if not a over 1 year and at least 5 weeks on new BrainsOS

### Reply 2:
Just plugged a second miner in at my home network (where i also run several S9s) and again it just revs up/down.Tuner status running.No <truncated> Tuner Status on both cards it states 'testing status or something' but how can it be testing cards when above shows there is no <truncated> it has just stopped and this one gives error -'Hashchain refused to start Enumeration: no chips detected on the current chain'I have had this before and solved it simply by fitting an older S9 card with the old autotune 2017 02 2019 FW, i replaced it and it ran fine.I'm thinking i may need to revert ALL seven boards back to the old FW but ive tried in the past and u can't just flash it???This is a right mess atm and BrainsOS is not helping at all.....

### Reply 3:
Why don't you start editing your thread? Why keep consecutive posting? It's prohibited. You likely keep bumping your thread. Anyway, try to flash it back to stock firmware since you said that you already had experienced it before and solved your case after reverting it to stock firmware. If you had problem contacting Braiins support I'd suggest try to contact them on this thread below - <link>

### Reply 4:
Well are <truncated> are you fully dead on all units?it does seem that is the case.

### Reply 5:
@BitMaxz Sorry will edit threads in <truncated> 'I noticed seven of my remote s9 miners 'I've been trying the hash boards with various cards and FW, with the older fW sometimes very rarely it will recognise a card for a few seconds and ghow a few Gh, then that drops off.I have then tried known working cards from my miners at home and all is ok.So i can only determine that all 14 cards have somehow gone faulty? (2 cards/7 miners).Its odd that BrainsOS recognises the cards, shows testing performance profile shows, but it does not display any <truncated> how can it be testing if its not sending any voltage (or displaying any voltage)?When tuner then fails i get these messages -'Hashchain refused to startEnumeration: no chips detected on the current chain'UPDATE 2Miner is now stable lol - <truncated> 8.945 V0.00 C0.00 C708 MHz280.000H/s 484.3GH/s 8.945 V0.00 C0.00 C708 <truncated> V0.00 C0.00 C708 MHz8Fans @ 100% Or similar to -'Hashchain refused to startHashchip: number of responses 27 of <truncated> doesn't match chip count 33: reply 0x36 missing'Has anyone heard of this before, is there anything else i could try here or have i somehow broken all 14 cards?There is no surge protection<rest of post truncated>

### Reply 6:
Are you sure it was an internet fault due to your ISP and not a power issue in the area?In our old location we had times where the power was on but WAY undervoltage and it was causing all kinds of issues for equipment, some printers were even destroyed. I would think the power supplies and miners would be tolerant but if the power supplies were trying to keep the voltage steady and the actual line voltage was bouncing as they were trying to fix something I could see something bad happening. The issue we had was it was just over the cutoff for the generator and UPS units and only 1 leg so it turned into a real disaster. -Dave

### Reply 7:
Seems you already tried almost all available firmware for s9 miner. If all doesn't fix the issue then there might be issue on power supply you need some extra PSU to test or if not then hashboard has some shorted components that leads into this issue.Can you tell us how much amp that fus<rest of thread truncated>
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22026,"Date: 2017-12
Topic: antminer s5 performance questions
### Original post:
Hi all,I have three s5 machine coming in and I want to boost the performance of them. Ive looked into custom firmware called minntorro but can find it anywhere. I also tried to get some hotmine x5/x6 upgrade kits but they told me 10 has to be purchased at a time. I also looked into the idea of adding additional hashing boards to the controller but cant find heatsinks that fit. Anyone have any ideas? Im sure the info is out there and if someone can point me in the right direction I would appreciate it!

### Reply 1:
S5 is an old, oudated miner with very little usefulness left in it. There is no upgrade path outside of those hotmine kits. Just buy a better miner if you want better performance.You just bought pentium 4's when you need quad cores.....

### Reply 2:
In addition, Hotmine kits are pretty difficult to get ahold of even if you have the money for the minimum order amount; many people have tried to contact Hotmine to order the blades and in most cases there was no response. Sidehack also has planned to manufacture Bitfury S1/3/5 upgrade blades in the future, but it will be a while until even the first prototypes are made. Besides these two options there's not much you can do with them to increase mining performance.

### Reply 3:
Thanks for the info. If you know of any group buys for the hotmine kit or anything like that I would love to know. I think I can get my hands on some extra hash boards. I am going to try and see if I can mate 4 hash blades to one controller. At least then each of my s5 machines will do at least 2 TH/s. Not blazing but for what I paid they aren't horrible lol.

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15807,"Date: 2016-09
Topic: Cheap electricity
### Original post:
hi,i have access to cheap electricity around 1 cent/kWh.if i buy 5 s9 antminer do you think its a good investment ? What would you say ?

### Reply 1:
Well i think its a good investment because the price of bitcoin right now is high and more price increase will come so i you have 29 5 pieces i think you can earn high amount of bitcoin you can pay for your monthly bill for power and hold your bitcoin for few months and sell it when the price of bitcoin is high so i think it will still profitable..

### Reply 2:
thanks for your response. still dont know if i should wait to buy the miners because of the halving. Maybe they will be cheaper after that...

### Reply 3:
Im hoping the S9 cost comes down.I'm running S7's with cheap ish electricity.The cost of the S9 is IMHO way to high at the moment.After the halving the price will either come down, or knowing they have the fastest commercially available miner wil just hold the price and cash in.The B2 / B3 was a typical money maker, sell B2 with a delivery date a week ahead then release B3 available today for $100 more money.Just sit and hope the price does come down.Also hoping the S7 price stays high so I can eBay the S7's.Not sure the S9 is quite stable just yet reading the thread on here.

### Reply 4:
I would check math and make sure it's 1 cent/KWH as that is very very cheap. Make sure all taxes/fees are included in it. But if you have 1 cent/KWH you should be able to mine with even a S7 for quite a long time. You would not need the newest efficiency miner at that price.But again make sure your math is correct. Also check how much electricity you have as not sure if very limited amount. But if you have a decent amount of electricity at that price, and can handle heat/sound you have a very good investment opportunity obviously.

### Reply 5:
It's pretty easy to figure this out yourself1) look at this <truncated> online sellers for new and used ASIC's... Look at the total price (including shipping and custom fees, don't forget PSU, cooling, shelving, cables, controllers,...)2) look up the ASIC specs here <link> enter your price, electricity rate, 1% pool fee, power draw, hashrate and a block reward of 12.5 here: <link> see if you can ROI in a reasonable timeframe

### Reply 6:
Your electricity is very cheap so you can easily make profit with a S9 and you could even do it with older gear.

### Reply 7:
You electricity price will make it profitable to mine even after the halving in 2020. But just wait for the S9 price to drop before buying.

### Reply 8:
you will eventually roi with an almost free electricity, but it may still take a long time, i suggest to mine for 3 months and sell them after thatthose antminer depreciate very quickly...

### Reply 9:
yes, it's very good investment. Antminer is using electricity for bitcoin mining and this task is similar of earning 300$ regularly with only 30$ loss. Also antminer 9 is the latest version and halving won't affect minig so much that antminer 9 will be usable.

### Reply 10:
If i had electricity as cheap as that then i would jump at the chance to mine, you might still be better mining alts though if you dont have the hardware yet. If you can afford to get a few s9s then you will be in for a decent profit even if we dont get much of a price increase . Id double check as well to make sure that is the actual price your pying per kw because as a few have said it seems very very cheap. Where do you live out of curiosity? is this a commercial setup or a domestic setting?

### Reply 11:
I would reiterate this again, Check your math!! Check your Math!! Check Your Math!!If you really have .01 electricity you could mine with anything 1 generation old, IE S7, and make a profit.The single largest cost for mining is electricity, after all mining is turning electricity into hashes, and you have close to the best cost possible.But beware there is a lot to learn (Wallet, miner hardware, mining software, settings, pools, etc)Start slow and make sure you have the basics down to you can make the most coin possible before you go all in.I also agree the S9's are still a little expensive, an S7 will cost a lot less and give you something to work with.As another thought, you may also want to look at alt coin mining. With .01 electricity and a good GPU rig there is also profit to be had.

### Reply 12:
There is no cheap electricity available and if yes why are you getting cheap let us know? If somebody say for cheap chances are that its a scam.

### Reply 13:
I think its still not profitable because miners are increasing to so difficulty is increasing too If you notice on the block chain here <link> hash rate are increased now and i think more and more miners are investing again to buy s9 The more the miners will come the more decrease of the revenue you will get if you are a starter.. But you can still mining if you can afford for your electricity or even a free dont spend your b<rest of thread truncated>
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17098,"Date: 2012-04
Topic: Installing 11.6 Drivers Via Package Managers
### Original post:
Debian source packages for 11.6 fglrx drivers:<link> Debian and Ubuntu are disimilar enough that packages may not install properly because of the way each builds their packages.UsageIn order to browse snapshots of the archives kept on <truncated> simply follow the links on the top left. They will lead you to a list of months for which data was imported, and the list entries in turn will point you to all timestamps of a given month's snapshots.For example, /archive/debian/ shows that we have imports for the main Debian archive, <link> from 2005 until the present. Picking October of 2009, <truncated> provides us with a list of many different states of the debian archive, roughly spaced 6 hours apart (the update frequency of ftp.debian.org at that time). Following any of these links, say <truncated> shows how <truncated> looked on the 4th of October 2009 at around 11:18 UTC.If you want to add a specific date's archive to your apt sources.list simply add an entry like these:deb <link> lenny maindeb-src <link> lenny maindeb <link> lenny/updates maindeb-src <link> lenny/updates mainTo learn which snapshots exist, i.e. which date strings are valid, simply browse the list as mentioned abov<rest of post truncated>

",[]
13898,"Date: 2011-04
Topic: Mining is usefull ?
### Original post:
Just a newbie question. This ""mining"" process is just waste of electricity to extract codes or are we realling solving mathematical CPU intensive processes like finding prime numbers or scanning SETI data for intelligent radio signal or something like that?

### Reply 1:
In order for a transaction to be ""unwritten"" from the record an amount of work equal to all hashing done after the tx is recorded must be done. So it's useful in the sense that you are making Bitcoin balances and transactions more secure. It is not useful for anything else.The way to think about it is that it's more efficient than gaurds, guns, walls, vaults, etc.There is a reason that 'useful' work can't be used, but I can't articulate it at the moment.

### Reply 2:
basically, we are transforming electricity to money

### Reply 3:
actually, the mining process is the act of using the hashing power of the entire network to crack the private keys of everyone who holds Bitcoin - in descending order of the magnitude of their holdings.well... didn't you ever wonder about that?

### Reply 4:
I dont have enough knowledge of the internal workings of Bitcoin to know if your joking or not, but I'll assume you are

### Reply 5:
wrongmining is supposed to give an incentive NOT to use hashing power to crack keys.

### Reply 6:
We are really solving mathematical CPU intensive processes like protecting the future backbone of the world's financial system from sabotage.He is, and if you ever feel the need to verify that, look at the source code.

### Reply 7:
sorry, but aren't hashing and key-cracking two totally unrelated problems?

### Reply 8:
Yes, but AFAIK they can both be solved on a GPU. So if you can use your GPU to mine, you won't use it for key-cracking.

### Reply 9:
No key cracking- mining is the way to go!

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4226,"Date: 2012-11
Topic: Best demonstrated efficiency: 375 Mhash/Joule
### Original post:
Yep, it's in the prototype photo 1 USB + 1 mini USB (so you don't mix them up one presumes)

### Reply 1:
mrb: What are your thoughts about the bASIC line using a little less than 2x the power per GH/s of the BFL SC line? You'd expect a 90nm chip to use twice the power of a 65nm chip all else being equal, right? Then what did BFL gain by going full custom? Shouldn't the BFL be significantly more efficient than 2x?

### Reply 2:
The bASIC power consumption estimate from Tom ""8-10 devices per 1000W PSU"" is too vague to make a statement at this point... For starters he did not say if he was talking about 24Ghash/s or 57Ghash/s devices.

### Reply 3:
I think it was a couple days ago that he clarified he meant the 54 GH unit, and in the last day he stated more directly that the 54 GH unit should use 100-120w, and the 27 GH unit 50-60w.

### Reply 4:
<link>

### Reply 5:
Ok. Assuming 120W for the 54 Ghash/sec device, that's 450 Mhash/Joule at 90nm.Therefore Tom's standard-cell ASIC should in theory scale to 450 / ((65**2)/(90**2)) = 863 Mhash/Joule at 65nm.If Tom went further and made it full custom, he would need a mere extra 16% efficiency gain to match BFL's 1000 Mhash/Joule.But I would assume that making it full custom would have a lot more potential than a +16% efficiency gain.So it seems:- (1) either Tom's power efficiency estimates are optimistic- (2) or BFL's power efficiency estimates are pessimistic- (3) or BFL's full custom design has not been that well optimized after all- (4) or Tom's standard cell design is extremely well optimized for being standard cell techI would say (4) is very likely since he hired state-of-the-art ASIC design firms. Knowing he had a very well optimized implementation would also explain why he initially did not believe BFL's 1000 Mhash/s claim as he probably assumed they were using std cell tech, and 65nm std cell tech should only be capable of 863 Mhash/Joule.

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20970,"Date: 2016-03
Topic: My antminer u3 is beeping?
### Original post:
whenever the light blinks when it mines, it beeps like its a bomb, im SERIOUSLY CONCERNED, PLEASE HELP

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23972,"Date: 2022-06
Topic: Antminer S9 fine control of power / hash rate. Dynamically disconnecting boards
### Original post:
Hello all,Is there a way to dynamically tell Antminer s9 to change power consumption (clock rate, hash rate) for example every 30min or an hour so no reboots, just some command to the API, and boom power goes from 1200w down to 400w with hopefully somewhat linear change in hash rate (in this eg. from 12 to 4TH)?I hope you get the Idea it does not to be perfect obviously there is some power consumption for the control board and efficiency is changing when hash rate and temperatures change etc...Everything is on the table. Custom binaries, patching firmware, or custom firmware like Braiins os but it would be nice to be FOSS...Hardware modifications are also possible for me. I was thinking to make some relay/MOSFETs circuits to disconnect hashing board control wires or if needed even power wires.But I don't know how would Antminer react to that? So in that way I get full power, 2/3 and 1/3 power which is good but even better would be to control it with software so I can have more discrete power steps for eg. 100w steps with let's say min of 300w in steps by 100w up to max.Thank you so so much to anyone with experience who wants to share some information with me.Cheers!P.S. Yes this ha<rest of post truncated>

### Reply 1:
Check ASIC.to firmware and BraiinsOS I think you can fully control your miner with that firmware. Or you can discuss it on their official thread here belowAsic.to- <link> OS- <link> solar I suggest check this thread below and maybe you can get some idea about the solar setup. - <link>

### Reply 2:
Everything you mentioned can be done using AwesomeMiner, it's the best tool for this job, hands down.You will, of course, have to use Vnish firmware to use most of the functions, AwesomeMiner has its own distribution of Vnish and you don't have to buy AwesomeMiner license if you use it which is a plus.With AM you can set your target profile hashrate which gets activated based on many factors, like time of the day, temps of the miner, number of shares found, profitability, and a lot more, if you don't want to use the already configured profiles you can just change the frequency and/or voltage.The way it works is like this, you have what's called triggers and actions, the former watches for something to happen in order to activate the latter, there are many ready-to-use triggers but you can even write your own c# script to get inputs from your solar inverter and adjust the hashrate accordingly.

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15865,"Date: 2017-01
Topic: How to Do Mining In Windows
### Original post:
Want ask about how to do mining Really need a simple tutorial, but easy to understand.

### Reply 1:
Seriously? Have you ever tried google search engine to find what you've asked? There's so much answer there and even GUI/App for mining without needing an advanced knowledge to run command prompt or furthermore ( Even if it's needed, there might exist a clear instruction for you )Tutorial from Coindesk - <link> provided by Kiv - <link>

### Reply 2:
If you want a simple way in mining I prefer that you dont use windows. Its much better and easier if you use minergate. You just simply download and install the software then you are ready to go. Other mining set up could somehow be tricky but this software is really for dummies that you will not even experience confusion. Even with just GPU or CPU this software enables you to mine.But if you want serious mining buy some antminer s9 so you could really profit from mining bitcoins and other altcoins.

### Reply 3:
Bitcoins cannot be mined in laptops or systems. It needs ASIC. But some altcoins can be mined in laptops also. There are two types ,cpu and gpu mining. Some altcoins like monero can be mined in cpu, whereas most altcoins will be profitable if only mined in gpu. You should take electricity charges into consideration for getting profits. If you want to avoid these and still mine, then you can join cloud mining schemes like genesis mining where you would have to pay just one time charges based on hash power you select, but maintenance charge is also calculated. Bitcoin mining is mainly done in china and it has become much difficult nowadays. Instead, you can try altcoins.Good luck

### Reply 4:
Mining of Bitcoin using Windows platform is just out of question. The difficulty is increased too much that ordinary Laptop / desktop will not help much. You need ASIC Servers infrastructure to be able to really benefit from Mining.

### Reply 5:
Minergate or nicehash miner. Although nicehash doesn't pay too well.

### Reply 6:
Oke thank you for your reply all.

### Reply 7:
Asking it on Google would be more convenient for you because the answer for your question would be given right away by google, compare on asking in this forum which take some time for someone to find this thread and answer your question, which would be time consuming, don't you think? And besides, mining bitcoin requires a lot of money for the hardware that you are going to use and the electricity that you are going to pay and you must have also a stable internet connection. Mining bitcoin on windows would just waste your time because cloud mining is not really enough to mine a lot of bitcoins.

### Reply 8:
Nobody will suggest you to start mining in windows because it will damage your laptop or desktop at some point, even if you google it some many people will say the same answers better you need to buy good hardware where you can make some good money with it.

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11598,"Date: 2011-08
Topic: The community needs good Crossfire-Friendly (or, exploitive) Mining Software
### Original post:
The community needs good Crossfire-Friendly (or, exploitive) Mining Software.......and here's why I think so:With the current price of Video Cards vs. the current ROI, it really doesn't make sense to mine for profit using a 6990 @ $700+USD <truncated> 3x or 4x 5770 Cards @ $99/each and combine their solo-200MH/s power into a single hashing POWERHOUSE thread and you will have alot of people saying 69-what ? ....exactly.I use 5770 cards as an example because they are plentiful on the market, give a great ROI (return on investment) and are Crossfire capable....not to mention, 100w/card.Doesn't this make sense ?1x 6990 @ 700MH/s = $700+USD .......OR........ 4x 5770 @ 800MH/s = $400 USD.The money you would save on power supply requirements would go directly to a motherboard that could support 4 cards.

### Reply 1:
you can mine with multiple cards on the same computer without using crossfire at 205-215mh each i'm getting 400mh out of one 5770 equiped machine i bought used and installed a pair of them in.

### Reply 2:
....thanks Captain Obvious.The point I was trying to make was to take 4 shitty processing threads and team them up into 1 SUPER THREAD, so during SHORT ROUNDS IN A POOL your 200Mh/s cards are struggling to make 2 shares/each when the 6990 users have 50+ under their belts in the same amount of time.GET IT NOW ?

### Reply 3:
no not really there's no diffrence between what my 2 5770 cards and my 1 5870 turn in when they're both running at 400mh(combined or alone) regardless of a pools round length.

### Reply 4:
that only applies on rounds that are like 500 shares and whoever solves their share first gets the reward and everyone else fails

### Reply 5:
crossfire wont matter if anything it would slow it down i used to run boinc and it did work in crossfire and it would slower then if both cards ran work units alot because they have to stay in sync if one card goes faster the other one has to slow down or stop to stay in sync with it. 6990 and 5970 cards have to run 2 clients on mining just like having 2 real video cards.

### Reply 6:
next time you think to take a condescending tone with people on the internet, you might want to double-check that what you're saying makes sense first

","[
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    ""hardware_name"": ""6990"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5770"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": false
  }
]"
22243,"Date: 2018-01
Topic: Need help with setup of my 20 S9’s
### Original post:
Hi, Im trying to setup these S9s in a data center far from me. I want to be making resets remotely. Please make recommendations on: Firewall, LAN switch, and switched PDU for an operation of this size. Thank you.

### Reply 1:
Often the data center will have a recommendation in this area. They may have already done something similar for another client. They should be able to suggest something that is most compatible with their existing infrastructure.

","[
  {
    ""hardware_name"": ""S9s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Firewall"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""LAN switch"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""switched PDU"",
    ""hardware_is_owned"": false
  }
]"
11802,"Date: 2012-02
Topic: CGMINER GPU bitforce overclock monitor fanspeed RPC in C linux/windows/osx 2.2.4
### Original post:
Thanks for the reply Kano,I am using version 2.0.8, I should update my stuff. Cheers!

### Reply 1:
The new cgminer 2.2.4 doesn't seem to work with my discrete GPU + integrated GPU (though not used for mining) setup. It keeps giving me: Code:[2012-02-11 21:35:02] Error: Building Program <truncated> 21:35:02] Failed to init GPU thread 0, disabling device 0[2012-02-11 21:35:02] Restarting the GPU from the menu will not fix this.[2012-02-11 21:35:02] Try restarting cgminer.Press enter to continue:

### Reply 2:
First of all, I'm not on Windows I'm on Xubuntu 11.10 and I compiled both the source release and the git repo (so no fear of not extracting all the files). And I restarted over and over... AND I renamed the old .bin files. Still not working. Sorry for not posting the output of the debug flags, though. That was something that I forgot to do. Results of ./cgminer -D -T (with pool, user, and pass, of course) Might be a tad bit <truncated> 22:36:59] Started cgminer 2.2.4 [2012-02-11 22:36:59] CL Platform 0 vendor: Advanced Micro Devices, Inc. [2012-02-11 22:36:59] CL Platform 0 name: ATI Stream [2012-02-11 22:36:59] CL Platform 0 version: OpenCL 1.0 ATI-Stream-v2.1 (145) [2012-02-11 22:36:59] Platform 0 devices: 1 [2012-02-11 22:36:59] CL Platform 1 vendor: Advanced Micro Devices, Inc. [2012-02-11 22:36:59] CL Platform 1 name: AMD Accelerated Parallel Processing [2012-02-11 22:36:59] CL Platform 1 version: OpenCL 1.1 AMD-APP-SDK-v2.5 (793.1) [2012-02-11 22:36:59] Platform 1 devices: 1 [2012-02-11 22:36:59] GPU 0 iAdapterIndex 0 strUDID <truncated> iBusNumber 1 iDeviceNumber 5 iFunctionNumber 0 iVendorID 4098 strAdapterName ATI Radeon HD 4290 [2012-02-11 22:36:59] GPU 1 iAdapterIndex 2 <rest of post truncated>

### Reply 3:
Looks like you messed up the libraries - did you 'ldconfig' or reboot and thus fix it that way?Were you running a beta driver maybe and then <truncated> definitely doesn't exist on my xubu 11.04 / SDK 2.4

### Reply 4:
Just installed 2.2.4 on WinXP Catalyst 11.6.It did not generate the .bin files for me. I tried multiple times with different command line options and rebooted and tried again.I copied my renamed .bin files over from the previous install and am working now.Thanks,Sam

### Reply 5:
So are you saying that cgminer 2.2.4 does not work with catalyst 11.6 Thanks !

### Reply 6:
NO!I'm saying that this version didn't generate the .bin files when I ran it. This has been an ongoing annoyance for me. I have copied the .bin files from a previous instance of CGMiner and 2.2.4 IS working with Catalyst 11.6.I just posted my report for informational purposes.Sam

### Reply 7:
Con, I don't have any success in editing the .cl file for DiaKGCN, it only generates HW errors. Tried a forced submitting of these shares with --submit-stale, but that seems to not trigger a forwarding to the pool. Is there any change to output the nonce or hash that DiaKGCN produces and which is considered a HW error?This makes me crazy, because in Phoenix it's a healthy kernel ... dunno how to cure it for CGMINER currently :-(.Thanks,Dia

### Reply 8:
What is ""P in cgminer?

### Reply 9:
Powertune.

### Reply 10:
Thanks it isn't in the docs. I ended up finding it in the source. Was coming back to answer my own question. I got only 5000 series so they are always 0%.

### Reply 11:
Same here. What would a value of 20% mean ? Or 0% ? Or -20% ? I did RTFM but I did not quite understand as this seems to be an undocumented feature. Thanks !

### Reply 12:
1: You have hardware monitoring on a device that can't mine. OpenCL doesn't communicate with the ATI Display Library to tell it which device is which. --gpu-reorder may help that.2: With that older stream (2.1) it uses the binary clc as part of building kernels. The fact is this is your main problem here and it cannot build anything and is not cgminer's fault. Usually this would happen if your installation is corrupt, but the fact that you have had other binaries built fine means it's something else. The other thing that comes to mind is that you are starting cgminer as a different user and it doesn't have access to where the binary is in that user's path: eg. starting as sudo when the binary is in /usr/local or vice versa.3. That t1 warning is a warning and will not break compilation.

### Reply 13:
which command line options to set for optimum 7970 performance?

### Reply 14:
-I 11 for the 7970.

### Reply 15:
I know this has been long standing, but there is more debugging in newer versions. Just once more for my crying pleasure, can you start it with --verbose -D -T (without any bin files in the directory) and give me the full output please?

### Reply 16:
keeping in mind, on windoz you have to go down to 9 to prevent high CPU usage.also, if you are on windoz, and you want an Intensity above 9, and you have more then 1 card. then you will need to le<rest of thread truncated>
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  {
    ""hardware_name"": ""discrete GPU + integrated GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI Radeon HD 4290"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""7970"",
    ""hardware_is_owned"": false
  }
]"
14104,"Date: 2011-06
Topic: small reward help me set upa pool with 2 of my friends
### Original post:
will give 0.1 btc to anyone who can tell me what modifiers someone has to use to connect to my client. I have 2 trustworth friends who want to pool with me and I want to know how they can connect to my client

### Reply 1:
try this <link> this will help also <link>

### Reply 2:
I still need hepl if the machine is in a different state... how do they connect?

### Reply 3:
you have to use a dns program like uhhhhh <link> to convert your ip to a dns aname they can connect to

### Reply 4:
well i did that, now what?

### Reply 5:
If he's running his on pool, which I doubt he is.If you want them to mine with you on your deepbit account or something, simply setup workers for them, and they can use that to connect. If not, and you ARE running your own pool, you have to portforward port 8332 and 8333(?) to the host that's running the pool, then give your friends your external address.

### Reply 6:
If your machine running bitcoin has a static, public IP address then your friends simply need to point their miners to that IP address and you need to run bitcoin in server mode with a properly set bitcoin.conf.More than likely your bitcoin machine is behind a NAT router so you need to port forward 8332 to your bitcoin machine then have your friends point to your public IP address (or dyndns hostname) port 8332.You need to set up a bitcoin.conf. See <link> for <truncated> you will want to set server=1, rpcuser, rpcpassword, rpcallowip.

","[
  {
    ""hardware_name"": ""machine"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NAT router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitcoin machine"",
    ""hardware_is_owned"": true
  }
]"
11433,"Date: 2011-06
Topic: [Phoenix/LINUX] Autominer v0.1b - Auto Loader & Pool Downtime Switcher
### Original post:
Nice work, I made some similar scripts myself but never incorporated pool <truncated> the miners each in their own GNU Screen sessions and set this to run at start up in your DE of choice (and set automatic log in of course) and bam, this script is now ideal for headless mining. The screen sessions will allow users to view the miners though SSH. I like to start an extra session as well just so i can run aticonfig if i need to check my temps/adjust fan speed/what have you.I've been working on a way to detect locked up miners, I'll let you know if I find anything interesting.

### Reply 1:
I'm just detecting GPU load via aticonfig --adapter=X --odgc and killing GPUs which aren't under load.Also, yeah this works for headless I guess, screens are named $identifier-MINER so if you set an identifier to 'Radeon5850' the screen would be called 'Radeon5850-MINER'. Temp screen is called 'temps'.

### Reply 2:
Oops, I some how missed that you used screen already. Script skimming comprehension fail. Its early (for me at least), ignore my blather.I'm beating my head against the wall for not thinking about checking for bum miners with gpu load. I was using wget and grep to check deepbit's api for statuses, which is fine i guess, but not good for solo miners or pools without an api like db's.

### Reply 3:
I use tmux for my miner(s), as:- it can be split <truncated> so I can have a number of miners in one ""window""- its launch can be scripted, so you can have one .sh script launch a number of miners each with their own details *and* detach the whole- it can be scripted and the buffer saved somewhere, to be later handled via other GNU toolsFor example: on screen 0, window 1, pane 0 I have a miner; on pane 1 another.Code:echo ""Miners' info:""for pane in 0 1; do tmux capture-pane -t 0:1.$pane #captures the contents of the pane for the 1st miner tmux save-buffer /tmp/buff-01$pane # saves it to a file echo ""Miner $pane: $(tail -n 1 /tmp/buff-01$pane)"" #gets the latest line, usually the one with MHash/secdoneI also modify the miners to report found/rejected blocks on STDERR, then munge it with some Perl and display the graph on a site, but having only one graphics card I'm not sure how useful the thing is to you guys

### Reply 4:
Yeah I'm just doing a check for GPU load below 90%, then sleeping 15 sec to make sure it's not an anomoly, then killing the miner and changing to backup pool if it's not fixed.Also, version 0.2 should be up soon, with regular status reports to the main window so that you can see everything is mining, removing the annoying 'All seems fine' message every 2 minutes, and timestamps in the main window.

### Reply 5:
Great! Thank you.I'm also using a much more ""simpler"" bash script, nice to have a backup server now.This also helps me to learn more about script writing, so thumbs up for you.

### Reply 6:
Glad to be helping people out, I'm uploading v0.2 right now and adding it to first post.

","[
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    ""hardware_name"": ""GNU Screen"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""SSH"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""aticonfig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Radeon5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""tmux"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""graphics card"",
    ""hardware_is_owned"": true
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]"
12021,"Date: 2012-09
Topic: Question about mining -
### Original post:
So in my quest to understand a little more about how bitcoin hashing actually works, I had a few questions, and was wondering if someone smarter than me could answer. Looking up what rollntime is what got me into this, and I pretty well understand that concept. I understand a little bit about what the block header contains when it's being hashed. The 3 main variables that change (while trying to find a new block) are the merkle root, timestamp, and nonce.The merkle root changes when there's a new transaction across the network, correct? How do these changes get pushed to the miner, and how often? I'm assuming the pool does this?The timestamp changes every second. I understand how rollNtime ""moves"" the timestamp around to keep the miner busy.And lastly the nonce range. This changes with every hash.Now from what I understand, it takes ~4GH/s to hash through the entire nonce range every second. After the first second, the miner moves the timestamp ahead one second, and starts the nonce range over, correct?What about miners faster than 4GH/s? I'm assuming that since they move through the nonce range faster, they can start on the next timestamp even sooner.I'm assuming that even 2 BFL M<rest of post truncated>

### Reply 1:
Other things can be changed. Don't know wich but timebase and transactions aren't the only thing

### Reply 2:
Alright, so I guess that's what my question really is: what else can change, and how often. A 1TH/s miner can entire 10minutes of rollntime""s worth of nonce ranges in just over 2 seconds, but you can't calculate a block 10 minutes in advance, can you? Ill look a little more into how the merkle root works, and see if I can figure more of this out.

### Reply 3:
the coinbase tx can contain arbitrary data. It is referred to as the ""extra nonce"". If you need a new header and no other data has changed you can simply change the arbitrary data in the coinbase field. It is never used for anything by the bitcoin network. It simply servers as a source of extra entropy (and is also used in merged mining - it is what links the bitcoin block to the alt-chain block). One pools has even used the coinbase field to send short messages.Also the time field doesn't have to be exact. The network will accept blocks with timestamp within 3 hours of the network normal time. So once can ""cheat"" and simply increment the timestamp field into the future.Still in current pool setups (except p2pool) the pool server does all the block header computation (including ensuring each miner is working on unique data by setting the coinbase field). When miners can perform 1000x as much work it is going to put 1000x as much load on the pool server. Some clever use of n-time rolling will help but the load increase is going to be large.One solution is to change how pools talk to miners. Have the miner construct the blockheader locally. The pool simply becomes a mechansim for sha<rest of post truncated>

### Reply 4:
As I have stated before and will state again - that's a hack - pure and simpleThe problem is (as you said) that the nonce size is too small - good old MSDOS design.There is space to increase it - even to 128 bits which would certainly last a long way in to the future.The problem is the bitcoin devs suck at handling soft and hard forks - or more correctly are afraid of ever doing a hard fork and suck at doing soft forks.Changing the nonce size to correct the true problem is a hard fork.As for rolling the time forward - the limit is 7200 seconds.cgminer limits it to 7000 seconds just to be on the safe side ... since who knows what problems people have with their bitcoinds - windows sux at keeping the time reliable and linux has ntp that everyone should have installed but some people forget that little gem.Edit: as for when to get new work - there's 2 reasons:1) You ran out of work2) Your work expired(again cgminer pre-emptively gets new work of course so you're rigs are not sitting there twiddling their thumbs)1) already happens very quickly on pools that don't support roll-n-time2) Is a setting in cgminer - scantime - and other things affect it also(well there is a 3rd reason - an L<rest of post truncated>

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    ""hardware_name"": ""BFL M"",
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    ""hardware_name"": ""1TH/s miner"",
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]"
11773,"Date: 2012-02
Topic: some donate, some don't, collection for cgminer 7970 [approx 65%]
### Original post:
Thank you everyone. keep them coming we are almost there. I will lock the post when I receive enough.

### Reply 1:
I just sent 5 BTC.Let's help make cgminer even better!

### Reply 2:
wow, thank you everyone. will update the list soon.

### Reply 3:
I see another 20BTC since I last reconciled. As soon as my next transaction clears, I'll send the 10BTC to match it.

### Reply 4:
Since my last update, I see:2 BTC10 BTC2 BTC1 BTC5 BTCTotal = 20 BTC50 percent = 10 BTC10 BTC Sent.

### Reply 5:
Hmm I thought the first post said 100 BTC was the amount required ...

### Reply 6:
I believe 100 BTC at the time of the first post would have been around 650-660. BTC/USD has dropped/fluctuated a bit since then...

### Reply 7:
Sent 5 more

### Reply 8:
NICE.. calculating now.......

",[]
22600,"Date: 2018-05
Topic: Antminer S9 bmminer not starting
### Original post:
I am seeing more and more antminer s9s that will not boot and are stuck in an endless loop of grep bmminer, any suggestions on how to address this issue?<link> not found= 1369 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1387 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1396 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1405 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1414 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 1432 root 0:00 grep bmmineretc...

### Reply 1:
That error has been exclusively showing up on 1117 firmware machines. The downgrade to the april firmware always fixes it for me.

### Reply 2:
Thanks! I should have guessed, that did the trick for about 90-95% of them. It seems on a select few the issue still persists, although the kernel log hangs on ""Start bmminer ..."" instead of giving endless output.Also, what is your preferred method of flashing firmware when you encounter the code 413 - Request Entity Too Large? Is there any other method besides using a microSD card, and how exactly do you put the firmware on the microSD? Do you extract the files first? And what format, is FAT32 sufficient?

### Reply 3:
Ive honestly never seen that error before, and I run almost 10k S9/T9s. I know its been mentioned a few times on the forum here but I dont recall seeing a good answer :/

### Reply 4:
Alright, I will see if bitmain will do a warranty repair. I really appreciate your experience with these issues because otherwise I would be way more clueless

### Reply 5:
Thanks, I worked out a warranty repair with bitmain. I assume you use dhcp also? And do you have any suggestions for internal servers besides dhcp dns and ntp?

### Reply 6:
Actually I do not allow DHCP on the production floor, everything is set static and each vlan is locked down pretty well. DNS and NTP are the only ones I run for the servers. I have tried various proxy pools at different times but they all have issues so I nixed that idea.

","[
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""microSD card"",
    ""hardware_is_owned"": false
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]"
22339,"Date: 2018-02
Topic: Avalon 741 options
### Original post:
Anybody have some good experience they can share for monitoring Avalon's? I'm running 25 controllers and trying to optimize the management of them. I tried using their management software(<link> but just couldn't get it figured out properly. Would appreciate any/all thoughts and suggestions. Thanks.

### Reply 1:
I have been trying for months to get help setting up their new version of AMS. The instructions from their own github are incomplete and I have yet to receive a single answer in their official IRC support channel.

### Reply 2:
Pretty much the same problem I ran into. There's some crucial steps missing from the GitHub. Might be completely different if you're an experienced linux user but my knowledge is limited. I emailed Steven in early Dec, he forwarded my email to <truncated> but never heard back from anyone.

### Reply 3:
I am decently experienced in linux and so far I have been able to get the web portal up and running. The problem I am running into is with the authentication. It doesnt even error out when you try to put credentials in, it just does nothing when you make the login attempt.

### Reply 4:
You have to type into shell:amscli initamscli adduser user pass

### Reply 5:
Yea thats part of the instructions. Doesnt mean it works :/

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    ""hardware_name"": ""Avalon 741"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""controllers"",
    ""hardware_is_owned"": true
  }
]"
11658,"Date: 2011-10
Topic: [EXPERIMENTAL] poclbm-autohop: Yet Another Automatic Pool Hopper
### Original post:
The past few weeks, I have been slowly working on modifying poclbm to be a full-fledged automatic pool hopper. I think it's finally to the point where it might be usable enough to distribute, but I'm still choosing to label it as <truncated> mining pools are still using the inherently unfair proportional payout system. My primary intent is to encourage pool operators to migrate their pools to fair systems. It seems as if the only way this will happen is if miners themselves see that the proportional system is unfair. (Unfortunately, the fair systems often seem unfair at first glance, making explanations more <truncated> poclbm-autohop operated similarly to bitHopper, retrieving share counts from the various pools, and calculating a utility for each one. Recently, however, instead of replacing their broken payout systems with provably fair systems, pools have begun to implement various obfuscation measures, such as delayed statistics. It is apparent that another approach is needed.Using a local copy of pident to identify the pools that have claimed each block, I calculate the probability that each pool's last block occurred at a given time index. This probability is currently based <rest of post truncated>

### Reply 1:
Have you tried to connect to all pools in the list, timing LongPollings and (as an easy start) assuming the pool from which the first LP comes has found the block? This could also be factored in additionally with your scoring approach and should probably give some better results.

### Reply 2:
I meant to write something to test that strategy, but I haven't gotten around to it yet. Though, the data from <link> suggests it would at best be another piece of the puzzle, rather than a complete solution. One of the problems is that you're still trusting pools to not obfuscate things. (At least one pool was talking about delaying long polls to known hoppers--I'm amazed at the effort being put into fighting pool hopping with methods other than changing reward systems.) Then again, we're still trusting pools to report which blocks they've solved accurately.

### Reply 3:
The hopping monster is getting to a Gojira size. Nice.

### Reply 4:
+1....

### Reply 5:
+ONE MIRRIONPPLNS is 0 variance for the pool operator and rewards every share equally for the miners

### Reply 6:
Not to be picky, but PPLNS does *not* reward *every* share equally. Shares that fall out of the PPLNS window are worth 0. Just sayin' Though, I agree, Prop is broken. Miners need a fair reward system (*cough* ESMPPS *cough*), and fighting pool hoppers by hiding stats, faking stats, or anything other than just moving away from Prop is not solving the problem.

### Reply 7:
Agree with bitp op, PPLNS is probably the least fair even including Prop. With prop every share is worth 'something'. With PPLNS a lot of work can end up completely wasted and worth 0. Bitp is a great backup pool by the way.

### Reply 8:
I'm getting the following errors. I tried a full pools.conf at first, then reduced it down to a single mtred xxxx xxxx line and it still doesn't work for me. ./poclbm.py -d 3 -v -f 1 -w 128Traceback (most recent call last): File ""./poclbm.py"", line 68, in <module> miner = <truncated> options, VERSION, <truncated> File <truncated> line 37, in __init__ self.transport = transport(self) File <truncated> line 21, in __init__ <truncated> <truncated> File <truncated> line 37, in __init__ say_line('Switching to {} with utility <truncated> <truncated> <truncated> zero length field name in formatsudo apt-get install python-scipy python-<link> package lists... DoneBuilding dependency tree Reading state information... Donepython-<link> is already the newest <truncated> is already the newest version.0 upgraded, 0 newly installed, 0 to remove and 10 not upgraded.

### Reply 9:
Sure, any given share may not be paid, but the expected value for every share is (for the moment) 50 / difficulty. (In the case of mineco.in, it's actually a little greater, since they return transaction fees.) Remember, if (for example), N is set to difficulty / 2 (as at mineco.in), shares will be paid out with the following probabilities:No payout: ~60.65%1 payout: ~30.33%2 payouts: ~7.58%3 payouts: ~1.26%4 or more payouts: ~0.18%The weighted average here is 0.4999 payouts per share. (If I had bothered calculating X number of payouts up to infinity, the sum would be 0.50.) Since each share will be paid out double the expected 50 / difficulty reward (because N is half the difficulty), the expected value per share is 1.0. Some work may seem wasted, but over time, you'll get exactly what you expect to get.Ultimately, PPLNS definitely has higher variance than *SMPPS, but it's not statistically any more unfair. With a large pool like Deepbit, Slush, or BTC Guild, the variance would be quite low, even for intermittent miners. I also don't think it's vulnerable to the whole <rest of thread truncated>
",[]
16002,"Date: 2018-06
Topic: Introducing our Canadian mining farm at 4PH/sec
### Original post:
Electricity is around 0.035 US dollars. It get lower once we get into the 10-20 megawatts (0.02 USD). No one can really compete against China, unless someone can produce a machine with same or better spec/price for general public in North America. On a side note , i am not too sure how much China is paying their electricity.If China tomorrow decides to stop exporting their machines, rest of the world will just suck salt. However, them selling their machines is 1 way to get real cash into their business. so its a give-give scenario. I do seriously believe China knows very well that if trust is lost in BTC cause of centralization, their will go bankrupt, but that's left for another discussion

### Reply 1:
Nice farm. Glad to see one starting up NOT in China. And your electric rates are fantastic. If you can get it under .03, that is less than China except when government gives their friends deals. You should be highly profitable as long as btc price holds up and succeeds. But you gotta show us the S9s in action!

### Reply 2:
Thank you for Sharing the pics with us! That is Serious Iron there.The Attention to detail is really great. Some serious capital investment, I hope it pays of big for you.Please keep sharing pics - seeing setups like this gives small miners like me inspiration

### Reply 3:
Part of our corporate structure are not completed yet, so unfortunately, we are not disclosing our website, but as soon as we ready, we will update with our projects etc ..welcome on the board however

### Reply 4:
We are located in the Quebec province. Thx to hydro electricity and proper deals, it makes us competitive with China.

### Reply 5:
Thx for the comments, we are going to expand very soon, we will put on some videos etc ..

### Reply 6:
That's a really clean setup. Hope to be able to visit one day. Great job! Im in Montreal if you pass one day we could go get a beer.

### Reply 7:
Sure thing. We could even deal some stuff OTC if u need, conditional to a face to face meeting. In fact, we looking at building a network of serious ppl around our stuff.

### Reply 8:
Hi everyone,Just to add upon secup's pictures, I have a few more of that same farm given that we work together on this venture.The upcoming pictures are still of Farm #2. We'll sort some pictures of farm #1 and post them soon.The build was started a little bit over 3 weeks ago and we managed to complete it in order to host all the S7's we have received so far. Of course, a lot more is to come, but for the time being here are some pictures:First of all, here is a picture of a full Row of S7's along with their transformer:You can see here we still have a lot of switches for future racks. Our farm network is entirely redundant and built upon Cisco certified products for a robust setup.Electrical distribution for one row (half a pod):Here's another row of S7's:Some overview of two pods. Lot more of those will be built in 2016!Next pods are in progress, we keep receiving electrical distribution components.And finally here are some custom sensors I built for the farm so we can monitor temperature, humidity and pressure at all times:Feel free to share us your comments and thoughts.

### Reply 9:
.02 is still pretty amazing price on electricity. Thanks for sharing setup it looks very good. Love you took time to make custom monitor of environment.. shows attention to details. Do you have pictures of Ether setup?Thanks for sharing.

### Reply 10:
I got some for you. I will need to take a day to take good pictures of our stuff, for now here is what I have for the ETH setup. It's located in our smaller farm.We are currently running 20x 280x and 20x 380, looking to buy 20 more to load both racks fully and use the kits we have bought.The racks were at temporary location on these pictures, there is no more S7's pushing heat into the GPU's This is while I was still setting them up (was missing some PCI-e splitters and some risers and was also missing the motherboard trays):The trays:A 20-gpu rack of R9 Nitro 380's: Everything is neat and tidy:

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    ""hardware_name"": ""transformer"",
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    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""motherboard trays"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""R9 Nitro 380"",
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]"
11136,"Date: 2022-04
Topic: Anyone recommend an ATX powers supply for an Antminer with 1 or 2 cards?
### Original post:
Hi AllI am looking to run an Antminer S9 with just one or two cards, reduce fan speeds and use a quite ATX style PSU instead of the loud 1600/1800w server type with blaring fans.I have been searching and i also have a 750w ATX psu at hand but they only have one 6 pin PCIE style connector and a load of other 5v/12v sata connectors i think they are?Is there an ATX PC style PSU available with 4 or 7 PCIE plugs on it (i will try with one card first so 4 plugs will suffice/1 control board, 3 to hash board).Does anybody know of one and what wattage would need for 1 card or 2 <truncated>

### Reply 1:
the corsair 1000 rm will work<link> suggest you program the unit with braiins. and set watts to 1100thus you will use. of 1100 = 720 watts it will work

### Reply 2:
Thanks, i presume BRAINS is software for the S9, i use Slushpool and have never used it tbh....Another question which i think i need to start a new thread on is what is the best position for the boards when you have bank 6, 7 and 8.I find ALL my S9's fail on board/bank 8 (furthest away from pcie connection on control board).I also don't think placing them in banks 6 and 8 with a missing board in the middle would be better??Anyone checked this, i have searched but no answers.Thanks for advice, much appreciated.

### Reply 3:
The center boards get the least air so they should fail more.. I have found they all pretty much fail any way they want to. But I only had about 50 s9's with under 10 bad boards.

### Reply 4:
Thanks, i am juts setting up an S9 with a single board that is in the centre slot and i'm using a generic CPU to pwer it.It runs at 3.4Th at most.Is it worth me installing Brains OS and reducing the voltage/power? Also shoul i install Brains software on all my other S9s as i only use Slushpool because it has a great UI.Thanks

### Reply 5:
The purpose here is only for noise reduction. Power usage is not a concern. Just noise. So basically looking for one card set up using an ATX supply. Anyone done this, the main misuse are going to be the miner fans now I presume. Brains software and want to set it at? Any mods to make physically like adding a inlet/outlet muffler or are they snake oil? Using ducting is not an option. Thanks again

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4131,"Date: 2012-07
Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 210 and 850 MH/s FPGA Boards
### Original post:
The initial posting (<link> has been updated: the new quad was added. Its now available in the shop at <link>

### Reply 1:
2 questions :If I understand correctly from the original post the price goes down with volume cross-customers. Is there a page with the current applicable price or recent orders by date so that we can know at which price we will be buying ?Which miners do support the 1.15y today and which others are working on its support ?

### Reply 2:
I have been running two test boards of the 1.15y (and three 1.15x) for a few days now (licensed <truncated> <truncated> f=228.00MHz, errorRate=0.00%, maxErrorRate=1.07%, hashRate=228.0MH/s, submitted 17 new nonces, <truncated> <truncated> f=232.00MHz, errorRate=0.00%, maxErrorRate=0.50%, hashRate=232.0MH/s, submitted 13 new nonces, <truncated> <truncated> f=232.00MHz, errorRate=0.54%, maxErrorRate=0.99%, hashRate=230.7MH/s, submitted 12 new nonces, <truncated> <truncated> f=224.00MHz, errorRate=0.25%, maxErrorRate=0.97%, hashRate=223.4MH/s, submitted 18 new nonces, <truncated> <truncated> f=224.00MHz, errorRate=0.00%, maxErrorRate=0.65%, hashRate=224.0MH/s, submitted 12 new nonces, <truncated> <truncated> f=228.00MHz, errorRate=0.33%, maxErrorRate=1.38%, hashRate=227.2MH/s, submitted 10 new nonces, <truncated> <truncated> f=232.00MHz, errorRate=0.69%, maxErrorRate=2.62%, hashRate=230.4MH/s, submitted 14 new nonces, <truncated> <truncated> f=220.00MHz, errorRate=0.00%, maxErrorRate=0.00%, hashRate=220.0MH/s, submitted 7 new nonces, <truncated> <truncated> f=216.00MHz, errorRate=0.00%, maxErrorRate=0.66%, hashRate=216.0MH/s, submitted 13 new nonces, <truncated> <truncated> f=216.00MH<rest of post truncated>

### Reply 3:
Regarding miner support, I should have that on cgminer soon, but since I don't own any 1.15y I'll depend on external testing to assert it does, in fact, work.

### Reply 4:
antirack,what about putting a single big fan over the four low-profile heatsinks?spiccioli

### Reply 5:
What did u do to become a beta tester ? Would love to test to!

### Reply 6:
I am sure that would work, but i am going to put them in a case so I don't need any individual fans on the units. I'll just use (case) fans and establish air flow through the case, forcing the air through the heat sinks (similar to servers, channeling the air with styrofoam if I have to).I have paid Ztex for the license and made them in ""my own"" assembly line here in Hong Kong. The two boards you see are from the test production.

### Reply 7:
Ahhhh nice to know, so you are producing boards for Ztex

### Reply 8:
No, just mine. And I can only do that because I have access to a manufacturing facility and components (and I am very motivated to build my own mining cluster).

### Reply 9:
Ah ok

### Reply 10:
Antirack: The 10port USB hubs your using in your photo (the blue one). Have you had any problems with them at all from a reliability standpoint?

### Reply 11:
Comments needed about my possible cooling system.I install aftermarket Northbridge heat sinks to 1.15y FPGAs. As far as I understand, every Northbridge heat sink fits there or are there some differences with the mounting holes? How much pressure can the FPGA take? Can I use a heat sink that weighs 150g?I use 1850rpm Gentle Typhoon fans to blow cold air to the heat sinks. FPGAs are placed in line inside of wooden tunnel so the air flows through the heat sinks.Pros? Cons?

### Reply 12:
Why switching to new fans? I did ist because I wanted to save some height. Im switching back to the included heatssinks and use them passive.

### Reply 13:
I'm not going to change the fans. I won't even use the 40mm fans. I'm just applying new heat sinks and using 120mm fan for 4 or 5 FPGAs. I can sketch a picture if that helps.

### Reply 14:
I didn't even notice the 1.15y came out. Gotta start subscribing to this.

### Reply 15:
I'll take the the fan of the coolers off and use the sink as passive My setup will be built into a IKEA Helmer locker.

### Reply 16:
I hate you so much The hash rates are very impressive. It looks like i lost a bit of speed by changing my fans. Great product.

### Reply 17:
So far no problem. But they are cheap and low quality, I'd keep a few spares handy. They cost very little retail here in Hong Kong (I've seen them for $1.5 from a company in China). They do have a good form factor for a cluster in my opinion.However, I have once or twice, when I touched the USB port on a running board (not the USB hub), had communication issues with that board. I am not sure if that's because of the hub or my electrical wiring (current flow) or just because of my prototypes. I am going to test this with an alternative USB hub now that you mention it.Did you have any problems or just asking because you are looking for hubs?

### Reply 18:
Have these com errors to on a 7 port hub from trust (cheap brand) once in a while. But most ti<rest of thread truncated>
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23067,"Date: 2019-09
Topic: One Hashboard Low Hashrate - High HWerro - Temp 15 Help
### Original post:
try solve your fan problem 1st. U are having 4 Fans... replace with a new fan n try again.

### Reply 1:
That hashboard started to act weirdly. It shows 15 Temp and hashes at a low rate. I failed to figure out what might be wrong with it. Maybe some of you have experienced that and fixed the situation so that I wanted to ask for help. What might be the issue?<link> is kernelCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-<rest of post truncated>

### Reply 2:
You can get some abnormal temp if your sensor is damaged. Can you try to hard reset the miner by holding IPreporter/reset button for 15 seconds then release?After that test it again if it still shows abnormal temp it means that the temp sensor is damaged. You can do some troubleshooting and find which hashboard is showing 15 temp. You can follow this guide below:---> "" Test hashboard one by one""Then try to clean the hashboard with abnormal temp or replace it with new hashboard.Or if you don't care about the sensor you can switch to Braiins OS then disable the temp sensors and check the miner again. If your miner is stable you can stay with this OS.

### Reply 3:
So you are saying damaged temp sensor might cause hashboard to act like that? I will first try reset and then run again. As for sensor, it sometimes shows the temp and works normal, so weird but will do as u say. Hope it gets to a solution.Btw, I have some more devices that shows 4-5 fans and none of them have issues like this so I dont think its related to fans.

### Reply 4:
I have seen that as well. Wrong sensor readings, than can even trigger the overheating protection and cause the unit to reboot constantly, even if ""most"" of the time the readings appear normal.Indeed bOS would be a good solution if you don't want to replace an otherwise perfectly good hashboard. And yes, always test them one by one, and make sure to swap power and data cables around just to make sure. Tests should last an hour at least, look at those values.

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23638,"Date: 2021-07
Topic: Whats the best mining equipment on the market today?
### Original post:
I have a place which is pretty cheap in electricity and would have good circulation being a warehouse. The warehouse is huge and while it is used for other things there would be a dedicated area for the miners so they could run uninterrupted 24/7. The only issue is there are so many miners out there today and a lot of them are either sold out or on preorder and I am wondering what would be the best investment for a medium scale operation?

### Reply 1:
There is no ""one-size-fits-all"" when it comes to choosing a mining gear, it's a combination of a few factors.1- Your power rate and voltage2- Your budget3- Your power and space capcitityThese are a few major factors that need to be considered, there are a few more, but you basically want to evaluate all things to make the right decision, the only common thing would be to avoid mining gears that are known to have a high failure rate, other than that, it's case-by-case.

### Reply 2:
It also depends on how many miners you're able to fit in the warehouse, since you'll want to maximize the space used while staying within budget. I don't believe miner dimensions vary too much but if it means buying second-hand or slightly older-gen miners so use up all the space, do so (e.g S17 instead of S19, but not an S9 for example).

### Reply 3:
Used S17+ is the best investment for me, good pricing, high hashrate and good cost efficiency..

### Reply 4:
Out of tens of models that the mining industry has ever known, the S17+ is in the top 3 worst mining gears ever, it has one of the highest failure rates among its generation model which is the 17 series, and the 17 series are by far the WORST performing mining gears, there is a good reason as to why they sell them a lot cheaper than other models which are even less effienct.

### Reply 5:
The s17+The s17ethe t17ethe t17+. all were bad for me.the s17pro has beed good. the 50th and the 53th both do well for me.and the two t17 were okay.at op what is cheap power 2 cents 3 cents 4 cents 5 cents a kwatt or something elseand how many watts can you do at 220-240 volts?It matters as the s9 could work if you have really cheap power ,space and lots of power.You can get s9 with psu in large buys of 500 units cheap.that would be 1300 x 500 = 650kwatts.it would be 6. or 7 ph which is around 2000 usd worth of coin a day.if you buy the gear at 150k usd and your power is 2 cents it costs. 312 a day so you net2000-312= 1688 a day in 100 days the gear is paid off.but you need two cent power. and 650 kwatts an hour to burn.

","[
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13999,"Date: 2011-05
Topic: Solo Mining
### Original post:
If I've interpreted the traffic here correctly, the effect of ticking the ""generate coins""box on my client is that my CPU will labor for YEARS (on the average) before producing anything,meanwhile burning electricity and wearing out my fans and making lots of noise.Maybe that's a smart thing to do and maybe not, but there sure as hell ought tobe an up front warning in large, friendly letters, rather than just an innocuous checkbox in the options panel.

### Reply 1:
This has been discussed before. The problem is not Solo Mining, it's CPU mining. Nowadays, that's pure waste.There are others who also think the option should be removed from the standard client or at least have a warning as you said. Probably something will be done concerning this.

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15772,"Date: 2016-06
Topic: Mining on the new GTX 1080?
### Original post:
Hi, I'm building a brand new PC. I will be having a i7 6700k Processor, and a GTX 1080 SC Graphics Card.I'm wondering, would it be profitable mining with that card? Anyone who has the card and tested in mining? Also, can mining on your PC wear down the CPU/GPU?Thanks.

### Reply 1:
only if your mining ethereum to convert to bitcoin/sell. yes mining puts wear on your gpu.

### Reply 2:
What if I was to put it on a very low mining setting?Would I even get a possibility of some profits?Should I just stick with cloud mining?

### Reply 3:
Here's a review I've come across, you can calculate yourself if it's profitable: <link> would not be mining with that card if you also plan on using it for gaming, not even on low settings, but someone might have a different opinion about that.

### Reply 4:
I will be gaming at 2k max settings, so I guess I shouldn't use that card then. Thanks for your help, thank link was helpful!

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10319,"Date: 2017-06
Topic: Where can I buy €500K of Antminer S9?
### Original post:
I'm interested to buy 500K worth of Antminer S9.What supplier could I trust with this amount of money who is going to deliver?

### Reply 1:
Why not buy directly from BITMAIN?

### Reply 2:
Bitmain does NOT use distributors and equipment not bought directly from Bitmain carries NO warranty! Period.In other words -- contact Bitmain directly.

### Reply 3:
Thanks for the tips gentlemen, will be buying directly from Bitmain!

","[
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14077,"Date: 2011-05
Topic: How much is too much?
### Original post:
Hi all! I'm new around here! (as you can probably tell by my post count). I've been doing this for two days now. In the first 24hrs, I had 1 stale, and in the last 10 or so hours I've had 30. Is this normal? My overall stale percentage is only .33, but I was just wondering. Does it have something to do with pool volume? It seems to me, that during ""peak"" hours is when it's at it's worst.I've read in another post somewhere that a .33% stale rating is near perfect, and above .40% is getting high.

### Reply 1:
This kind of thread should go in the mining section.Anywhere below 1% is fine. Stale shares happens mainly when you are still working on a block that has just been solved by another miner.

### Reply 2:
My bad. Close if necessary!I know what causes the stales, it was just that there were almost none in the first day, and a bunch, seemingly excessive in the second. w/e

### Reply 3:
Variance n stuff. Don't over think it, you're still below problematic levels.

",[]
10785,"Date: 2018-11
Topic: StickMiners - overview of low-power 'usb stick' type mining hardware
### Original post:
Yeah, KnC claims a lot of things. Sadly, one of those things is ~5-7% of the network hash rate. ( organofcorti should have an updated block maker stats post later today. )Unfortunately, that is the business model for most of the hardware makers now - while those who propose to do something else entirely, or still cater to the little guy by making a StickMiner (next to a planned bigger board), get mocked; though by a company that seems to have itchy keyboard fingers and nothing as of yet to show for it. Hey, at least they read these forums.That said, there's plenty to smile about.. if not SFARDS's chip or Avalon's plans or GekkoScience's progress, then you can always go watch a Block Erupter USB beep or get smashed about

### Reply 1:
Link?

### Reply 2:
I read some mocking for 21e6 embedded stuff and Bitfury Light Bulbs, both of which ideas I openly despise. But yeah, that was a lot of words that didn't actually say anything (or instill any confidence in them). I hope they're full of hot air and can't do what they say, because it sounds to me like they want to centralize mining almost entirely, dole out subscriptions to their gear, and glut the blockchain with billions of stupid transactions for completely unrelated things. None of which is an actually good idea. Once a few more halvings occur and transaction fees dominate the mining revenues, how many miners are still going to be in business when the blockchain is dominated by your zero-fee authentication and communication microtransactions for (id)IoT everything everywhere? How many nodes are there going to be when you're trying to transfer several gigabytes of zero-fee transactions per minute? Why should anyone think this is a good idea?I think I'll continue to work with real people instead of overwealth'd jackasses. Thanks for the link.

### Reply 3:
Small cosmetic update, just putting a few notes here:The Avalon Nano has sold out at ehash.com.The Avalon Mini may become available <truncated> Unveiled one of his SFARDS SF3301-based designs, it's a podminer (a la Gridseed Orb, Antminer U3, R-Box) design with 2 chips.GekkoScience are also entertaining the idea of a podminer.The GekkoScience Compac single BM1384 miner may go on presale as early as next week with a German licensee and seller also lined up for those on that side of the pond. You can read several impressions of the GekkoScience Compac in the official combined review thread, including my own. Keep in mind that it's for an earlier version.In bigger miner news, Bitmain's S7 may or may not get announced this month, the same applies to SFARDS' SF100, BitFury's 'Bitlamp' should go on sale before the end of the year, and Spondoolies-Tech teased a little:

### Reply 4:
I was happy they said something. Raises my hopes they might be getting closer. I really do like my SP20's.Now I just need to hope they will sell to small customers. They do make great gear.

### Reply 5:
Final minor bump regarding the GekkoScience Compac (see earlier post):Official sales started July 21st, 2015Pricing off of GekkoScience is at $25/unit (excluding shipping), 10 unit maximum, contact them if you need bulk.Because of the low price of these units, shipping can seem daunting. Group buys or waiting for retail sales can be an option in that case.RegionForum UserWhere to <truncated> <truncated> - <truncated> / <truncated> licensee, own manufacturing run)Design thread: <link> thread: <link> non-technical review/feedback: <link> technical review/feedback: <link>

### Reply 6:
While still little is known about the Avalon Mini, Canaan Creative have additionally hinted at an Avalon nano2. As with the mini, they appear to plan building a Chrome App for control.

### Reply 7:
Last chance, for now, to pledge for a GekkoScience Compac: <link> Either direct, or through one of the group buys (see 2 posts up in this thread).

### Reply 8:
I got some to test, looking forward to having a stick miner to play with again

### Reply 9:
I'm already looking forward to the next one(s)

### Reply 10:
large-printed the smallprint, just for you I'm leaning towards 'incorrect', as the same price is being applied to the Avalon Mini, which was listed at BTC1.08 just the other day (itself a rather hefty price). Webmaster snafu, I'd imagine

### Reply 11:
The Avalon Nano doesn't use the 3222. Pretty sure it has the previous-gen chip on it.

### Reply 12:
2015/10/01The GekkoScience Compac is now available, in stock, from ASICPuppy ($34.99) and BitcoinWare ($44.95 CAD/$33.99 USD$49.95 CAD/$37.75 USD). GekkoScience have suspended their own sales for now until a second batch is planned and produced. Bitshopper.de ran into a few issues with suppliers but should open up sales later this week.The BITMAIN Antrouter R1 is now also available. It is a small (wall-wart sized) wireless router and miner (5.5Gh/s) in one, limited to mine at the Antpool solo pool. <rest of thread truncated>
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  },
  {
    ""hardware_name"": ""SFARDS SF3301-based design"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GekkoScience Compac"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain's S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SFARDS' SF100"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BitFury's 'Bitlamp'"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Spondoolies-Tech gear"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon nano2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BITMAIN Antrouter R1"",
    ""hardware_is_owned"": false
  }
]"
10563,"Date: 2017-09
Topic: Bitmain international address change? Import tax to the UK?
### Original post:
I ordered a tasty new bitmain miner and put my address because... I just did. Now, bitmain say they don't change delivery address to another country, but they will change it to another address in the same country. Why is this? Any experience with changing bitmain delivery address, please share.Also, any experience of import tax and duty into the UK would be great. The HMRC website is horrible.

### Reply 1:
No duty just Vat at 20%Plus a handling fee to the courier of <20

","[
  {
    ""hardware_name"": ""bitmain miner"",
    ""hardware_is_owned"": true
  }
]"
15688,"Date: 2016-01
Topic: Can someone explain me the structure?
### Original post:
First of all sorry for my bad English, it's not my native language. I'm doing the final project of my studies about the creation of a massive bitcoin mine, but I must explain technically how it would be done.I fully understand bitcoin and all what involves but i can't find any information of the structure of a bitcoin mine. In case i'm not explaining myself well i need to know for example how are the rigs connected to the net, if there is one or more computers working, and things like that. I think a good comparasion would be the structure of a lan like <truncated> would help too if you could show me links to any place where this is explained.Thank you for your time.

### Reply 1:
What are you studying?Take a look at the pictures in this thread, <link> . Should give you an idea of whats needed.I'll come back with a proper answer later tonight!

### Reply 2:
Thanks! I'm just studing microinformatic systems and nets.

### Reply 3:
I would guess(!) they use some sort of workload system or proxy that distributes the work locally between the actual miners and hold a single or only a few connections to the outside network. Maybe you can get in contact with pool operators -> <link> for details.

### Reply 4:
maybe you should start knowledge about cisco .<link>

",[]
23422,"Date: 2021-02
Topic: Antminer S9 stopped working after unplugging and plugging it back in.
### Original post:
It does not seem like you are accessing the miner, looks like a cashed page to me, can you try a different broswer?Anyway, the first thing you have to do would be to get rid of the firmware, I am not sure about the uninstallation of HiveOS but an Sdcard flash should do the trick, please follow this guide <link>

### Reply 1:
Just moved my antminer and had to unplug the power. When i tried to start it up again it does not want to boot up fully. 2 of the boards have a red light on them and there are no red lights on the front of it, I have tried to wait for over and hour and still no change. I have tried to unplug it and plug it back in, i also tried the reset button and the ipreset button with no change. I did some slight trouble-shooting on a reddit thread and this is what i figured out:""Do you get any lights at all on the front when you plug it in, like an initial flash of red and green light as soon as you plug it in? Any lights on your Ethernet port?""Yes, when I plug it in the fans start and the ethernet port starts blinking. The other 2 lights blink quickly then turn off and they both stay off.""Can you find the miner IP on your network and access the miner interface? If so look in the kernel log and do a search for errors and anything else that might clue you in to what could be going wrong.""After getting a new ethernet cable now I can connect to it. But it still does not seem to be mining or hashing etc and i cannot open the ""Miner configuration"" it just loses connection. Also the kernel log etc a<rest of post truncated>

### Reply 2:
You are right i was accessing a cashed site. I seem to have been able to somehow reset it to factory firmware but its still not mining. At least I can connect to the device itself now to have a look around. I went into the kernel log and I CTRL+Fed ""error"", 0 matches. I rebooted the device through the webpage and this is the end of the log: <link> weird because under miner status i dont really get any info from the miner itself, like its not telling me the fan speed or temps (I can tell the fans are on etc) <link> Its like there is a communication error or something.Now that im able to connect to the device and it seems like I can communicate alright is there a way for me to flash ""new"" firmware though the interface without having to completely disassemble the miner? Thanks for the help by the way.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000<rest of post truncated>

### Reply 3:
How did you reset it? post a screenshot of the system over, or copy these detailsCode:Kernel Version Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018File System Version Fri May 31 10:59:27 CST 2019Logic Version V1.3.22Keep in mind that when you reset the miner your pool info will likely be deleted so make sure you enter them again.

### Reply 4:
Have you tried the method from hiveOS to rollback factory firmware? You can find the method under their FAQ use this link below.- <link> look for ""Resetting the settings and rolling back to the factory firmware"".

","[
  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sdcard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Ethernet cable"",
    ""hardware_is_owned"": true
  }
]"
10717,"Date: 2018-03
Topic: Minerwarez official Canaan Distributor
### Original post:
For international shipping do we have to provide any additional documents to <truncated> and how do they look like?

### Reply 1:
It depends on your country, what I was doing was checking in with customs office in Canada to see what forms I need to get together to import something. Every country has different forms and rules for bringing items in; I'm pretty sure that's why they've changed the model for international shipping. You can also ask the shipping company you plan on using what you need, I've been speaking with FedEx, as that's how my other orders were shipped.If they sent you an order previously, you could always ask their support line what forms they had to fill out to ship to you, just provide them with your order number. I have found lately they take 2-3 days to reply by email.

### Reply 2:
Something that makes a huge difference when importing into the US is the Harmonized Item shipping code. Depending on your country they might look at that as well. Miners are considered to be ""Data Processing Machine, no terminal or display' and as such have much lower tariff than general electronics goods. If you have gotten miners direct from China in the past - look at the shippers and the codes are there.Anyway - check to see if it matters when importing from US to your country.

### Reply 3:
I previously imported few miner PSUs from China to Bulgaria(EU) with DHL. All of the additional documents I had to provide for the customs clearance were arranged between me and the local office of DHL after they made a call to me to give me the options. That's why now I'm curious do I have to provide any additional document to minerwarez or this will be arranged between me and my local office of FedEx when my miners come to Bulgaria. Why do they want if they(minerwarez) actually does not provide customs clearance? It is done by FedEx(eventually).

### Reply 4:
Does this mean if I order a miner I declare what the value of the item is?

### Reply 5:
From what I've gathered so far, you would do just that. Arrange everything with your local FedEx office. Once they tell you all the forms required for shipping and you get them filled out, you have to send the shipping and clearance documents to Minerwarez through that email.[/quote]Yes that is what you need to declare for the item entering your country. That is what customs will look into as you pay tax and duty and items imported.

### Reply 6:
Yes that is what you need to declare for the item entering your country. That is what customs will look into as you pay tax and duty and items imported. [/quote]so @ andytranter if you are in Europe and buy 2000 usd worth of gear this means they report the value at 2000 usd and you would need pay VATmaybe 400 usd more.PM me if you need further explanation.

### Reply 7:
I figured I would start a topic specifically for the Distributor as they will be around for a while. The goal being maybe a REP will monitor this thread; no guarantees. As of today they are currently selling New Avalon 741's shipping out on November 20th. Personally I have had several orders processed with them and they have all gone smooth. My first was with Paypal; that option has disapeared but they still take credit card which is all I needed for my other orders.The last one for November 6th shipping was a bit more difficult as they now require anyone outside the US to make the shipping arrangements; but they have been helpful in directing me in what I need to do on my end as I haven't done this before.Here is the link to their website.<link>

### Reply 8:
I noticed today that they are no longer taking orders for Avalon 741s for November 20th. The new batch is for December 5th.

### Reply 9:
In that case, I'm glad I ordered mine when I did.

### Reply 10:
My only problem with this company is I tried to buy their AV6 and asked if they would do a discount in bulk. Their reply was:I responded and told them I do not need their PSU's as I have plenty on hand.Their reply was: Absolutely nothing. Therefore this led me to the conclusion they are trying to unload it all, and offer no return, no service, no warranty, and I have to take their package as it is. I get that, but if you are honestly trying to unload a shitton of old miners, don't you think any company in their right mind would budge? Who the hell wants a bunch of dead ass PSU's or miners especially when you have plenty of PSU's on hand?!?!?!Hell, at least when a person buys a used car they get to drive it!!! I am supposed to just buy a pallet of shit and pray??? Nope. Not for me.I dunno, but it left a horrible taste in my mouth and turned me off. Ill stick with Bitmain and all their BS over that.I am really trying to reason why Canaan is better, but I don't see it. AT ALL.Scrap'

### Reply 11:
Yeah I could see that, I always try to get a deal anytime I'm buying something, and it does suck when you can't find any wiggle room. I loo<rest of thread truncated>
","[
  {
    ""hardware_name"": ""miner PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 741"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AV6"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU's"",
    ""hardware_is_owned"": true
  }
]"
13815,"Date: 2023-02
Topic: SoloMining with CGMiner against Bitcoind / Bitcoin Core v0.18.1
### Original post:
Okay so my efforts came up empty with the solomining using CGMiner 4.1.12 on the latest Bitcoin Core v22. So since this info seems to be difficult to come by I figured i would continue my journey and attempt to document it and ask questions along the way:-)So.... I decided to try my luck with getting BitcoinCore v0.18.1 running which I seem to have accomplished a good portion but still could use guidance....Here were my steps:1. I downloaded v0.18.1 <link> and synced the full node. It took just over 26 hours to fully sync.2. After what feels like waiting for an eternity I have my full node running on an internal static IP of 192.168.50.151 and my Miner is running on a static IP of 192.168.50.217 3. To get the miner on my LAN to connect to the full node here is what I added to my Bitcoin.conf file (Obviously your network settings and username / passwords will most likely be <truncated> notes:*Without the rpcbind= in the Bitcoin.conf file I was only able to mine locally on the full node. I was not able to mine from any remote hosts on my LAN. So if you are only interested in mining directly on the full node you can do so by creating the CGMiner startup batch with the <truncated> -o <<rest of post truncated>

### Reply 1:
Your setup looks quite good. But note that cgminer does not support BECH (bc1...) addresses for solo mining, so stick to legacy addresses p2pkh (1...) here.In general, I would suggest to first mine some low diff bitcoin-forked altcoin (for example Bitflate or Widecoin) for testing purposes. So that you can verify your setup and make sure that you actually find blocks.To avoid having the rpc password stored in plaintext in the bitcoin.conf config file, you can use rpcauth.py to generate a salted password hash, see <link>

### Reply 2:
I guess the true test will be if you find a block, hopefully no-one else finds it at the same time and you can propogate the results out the rest of the network fast enough so that it recognizes your result before anyone elses.

### Reply 3:
Noted and changed the BTC address. Thank you for this!I'm not overly concerend with the RPC call showing the password in plain text as the LAN is isolated from the WAN and world so the plain text password doesn't concern me too much but I will look into modifying this in the future.Dedicated Fiber internet so I think I would be good on the network side. I am most concerned if I have my setup correct!

### Reply 4:
The odds of finding a block with 22 th are about 1 in 144 years.Assuming we stay flat.It would be funny if the op beats those odds and gets orphaned , but the likely hood of hitting the block and getting orphaned would be once every 1440 to 7220 years.Assuming 10 to one up to 50 to one for the Orphan. x the 1 time in 144 years for the block.

### Reply 5:
Probably the easiest way to verify your setup is to run testnet (testnet=1). But use a different BTC address then and backup your synced mainnet blockchain first, not sure if this wouldn't get overwritten by the testnet sync.In regards to the shares, the ""Accepted"" value will only increase when a block was found. On solo, it's all or nothing Last but not least, you can also try to run a more recent version of the bitcoind with cgminer, using my coinbaseaux flag patches (which include some display optimizations for solo mining): <link> tried yet if these patches apply cleanly also on the lastest cgminer code with GSF support, but probably it will work just fine.

### Reply 6:
What you're doing is fine as long as its a learning experience and you don't expect any returns.None of us know your background, Phil is just letting you know that if you are doing it with the expectation of making it rich, well thems the odds Otherwise, carry on brother, looks like you are having fun and learning along the way.

### Reply 7:
By the end of next week I should have a total of 25 x Compaq F's and 6 x 2Pac Miners chewing away. To be perfectly clear I have no expectations on a financial return with my current setup or hitting a block. My ETH mining has already left me very well positioned so figured time to expand!It would be incredibleto hit a block don't get me wrong but since my hash power is small when you compare it to the network hashpower and those 110TH (and soon to be 140TH) commerical miners.This is truly a learning experience mixed in with yeah a lottery ticket. I figured might as well learn as much as I can over the next month or so before I migrate my gear to a new place and then look to scale up once i'm more confident with my knowledge base with much more expensive gear.

### Reply 8:
Come on Philipma that's bad mojo and hopefully that won't happen!!! I have been in IT for years and have successfully been mining Eth, RVN and Zil for quite some time. Currently I have 48 GPU's pushing over 3.5Gh/s and fully understand that with solo mining BTC the odds are against me.<rest of thread truncated>
","[
  {
    ""hardware_name"": ""CGMiner 4.1.12"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitcoin Core v22"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitcoin Core v0.18.1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Compaq F's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2Pac Miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU's"",
    ""hardware_is_owned"": true
  }
]"
10141,"Date: 2017-01
Topic: help needed
### Original post:
sorry if this is a stupid question, but ive searched and cannot find the answer anywhere.If using a s7, does it matter about what computer you use to log set it up? i have a macbook and an imac, but will invest in a new computer if needed? does the computer need to be on all day aswel? thanks

### Reply 1:
You don't need a computer. The S7 have an integrated controller. You just need a power supply and an ethernet cable.

### Reply 2:
Why does no one even try to RTFM these days <link>

### Reply 3:
All you need is a browser on your network to log into your miner (the IP will be written somewhere on the miner),a laptop (any kind),PC (any kind) will have that ability.Just type the IP of the miner into the address bar of your browser & it should show up Might even be able to use your Iphone,not sure about an app for that though......

### Reply 4:
I'm wondering the same thing as Notfuzzywarm, since the manuals are pretty straight-forward and there is not that many pages.Even finding the manual is not that hard, just type antminer s7 manual in Google.And even though here at the forum there is a lot of chat about almost every basic thing in mining, these new help!!!! topics just keep coming over and over again.

### Reply 5:
Thx. I am reminded of this modern take on an old Proverb:Give someone an answer and they know that one point.Teach someone how to search and they can know all they need

### Reply 6:
The S7 has a built in controller, because of this you don't need to connect a computer to it unless you want to make changes to it's configuration. If there is a blinking green light on the front then it's online and hashing. All you have to do is visit the IP address of your miner on the local network by a device that is currently connected to the same network. You will have to wait until the controller powers up before you can connect to it...this can take a minute or so. Longer if it's being bad.You can use your cell phone, your laptop or even an old x86 desktop to make changes to it's <truncated> no special computer is needed. The miner just needs to be plugged into the internet and have sufficient power.sometimes it's easier to ask even if searching would be more effective...in addition, sharing knowledge reinforces it in your own memory...win win.

### Reply 7:
Ja asking is good - if there is no hard information out there already.It may be easier but again - you only learn the one point.Learning how to search for information be it on-line, in a library or within ones soul leads to a deeper/wider understanding from you investigating the leads found. That is provided a person cares to understand how/why something is what it is vs just knowing a single point of something.

### Reply 8:
True, I find it best to ask only after exhausting alternatives.

","[
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""macbook"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""imac"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ethernet cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Iphone"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""old x86 desktop"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cell phone"",
    ""hardware_is_owned"": false
  }
]"
13502,"Date: 2016-04
Topic: Installing BFGMiner 5.4.2 on OpenSuse 13.2
### Original post:
I just updated my openSuse 13.2 workstation to bfgminer 5.4.2 from 5.4.1. It was really painless so I wanted to pass on what I did and a little of why I did it. If this is your first time installing bfgminer then you will need to verify you have the various dependencies installed as well as a working development environment. This includes having an up to date compiler. If you do not know what I just said then you need to do some research that is beyond this little quickie help post. As a regular user, no root or sudo, or su at this point.Download bfgminer-5.4.2.txz and copy it to a folder of your choice. I put mine in a bfgminer folder in my home folder.Use ARK or some other archive program to extract it.open a terminal and go to the folder that was created during the extraction, /home/(your user name)/(bfgminer or <truncated> ./configure (as regular user)run make (as regular useropen a su sessionmake install (as su root) (this installs the executable in the /usr/local/bin folder, and makes it easy to upgrade from previous versions as all your shortcuts will point to the correct place)I use bfgminer to run a little antminer U3, mostly to test pools and ports for possible mining wit<rest of post truncated>

","[
  {
    ""hardware_name"": ""openSuse 13.2 workstation"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""antminer U3"",
    ""hardware_is_owned"": true
  }
]"
21838,"Date: 2017-11
Topic: DPS-2980AB A pinout + management module
### Original post:
Greetings,I'm using psu from bladecenter and I wonder if theres a chance to manage eg. fans in this unit. After turning them on, they're spinning at max speed (after while) even when nothing is connected to the PSU. Air blowing from the back is cold. I have few questions about that:1. Is there any way to manage fan speed (reduce it)?2. PSU only connected to AC draws about 70W (fans turned off) from the wall - is it normal?

### Reply 1:
1. No straightforward way to reduce fan speed. You can talk PMBus to the power supply and convince it it is in a healthy chassis or splice into the fan supply lines and control them that way, but no easy method that I'm aware of.2. None of the IBM bladecenter supplies I have experience with are happy being plugged in but not running. Their standby consumption is high enough that internal components can easily overheat without the fans running. I've lost DPS-2000BB and DPS-2980AB supplies to this.

","[
  {
    ""hardware_name"": ""psu from bladecenter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""DPS-2000BB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""DPS-2980AB"",
    ""hardware_is_owned"": true
  }
]"
16973,"Date: 2011-10
Topic: Need help figuring out electrical usage with small mining farm. Costs/Profit
### Original post:
Posts: 10View Profile Email Personal Message (Online)Need help figuring out electrical usage with small mining farm. Costs/ProfitToday at 09:33:19 AMReply with quote Edit message Delete message #1Hi all, This is going to be one mess of a post as it will reflect what is going on in my head. What I am trying to do is get this worked out so I can have the lowest energy usage. I know some of the parts that I have are not the best but, this is what I have on hand.GPU2x 5770 (240w) (360mhs)7x 5830 (980w) (2310mhs)16x 5850 (2500w) (5760mhs)1x 5970 (300w) (800mhs)PSU1x 650w4x 700w1x 800w2x 850wall bronze 80+ coolmasterCPU1x 5555x 9552x i3 2120Motherboard2x msi p67a-gd80 (3x 16pci 2x 1pci)4x msi 870a-g46 (2x 16pci 1x 1pci)1x asus m4a79xtd evo (2x 16pci 2x 1pci)1x giabyte ga880ga-ud3h (2x 16pci 2x 1pci)i have extender cables for the 1xpci and 6 for the 16 pciNow, since the price has collapsed and the difficulty does not look like its going down (much) I need to get a better idea on what I have here and see if it is wroth putting all together. i am okay to wait a year or so if i am at the break even level now.My electrical cost after tax is 13.7 cents.Using the data at this site <link> It see<rest of post truncated>

### Reply 1:
Buy a ""kiill a watt"" meter and measure it $20<link>

### Reply 2:
Did you include cooling costs and hardware depreciation?You could reduce the cost of electricity by disabling 3 out of 4 cores on you cpus as well as underclocking and undervolting (not to mention reducing some voltages on the mobo).P.S. Don't forget about merged mining!

### Reply 3:
<truncated> to this.You can't even begin to properly estimate profitability without knowing the load at the wall. Click on the link but the kill-a-watt record your loads and then post back. Trying to guestimate loads based on parts TDP is futile probably worse than futile because you likely will over/under guess and take it as valid.If you don't want to wait for Amazon to ship one most Home Improvement stores carry Kill-A-Watt.

### Reply 4:
Ok, only way to solve this because each part you have will perform diffrently in combo with others and who knows. So........Buy a Kill-A-WattGoto Home Depot, Frys Electronics, Walmart, ect less that $40 for sure. That a high est on priceNow program it to your kw/h usageCome back in 24 hours and read the costEDIT: Android app didnt update for a good while. my bad on the dupe repose .

### Reply 5:
The cost of boards or the CPU depends on which part do you have, and at which voltage. Using the BIOS, you can undervolt and underclock(or literally desactivate) parts of the board/CPU. It's not going to make a huge difference, but it helps. Yes, it's the best way to do it. Since you're so tight on the profit margin, I would suggest you to not plug the spare card alone on a board. Since every watt counts in your situation, either you completely full a board, either you don't plug it at all. I don't want to calculate everything, so I'll just estimate. Let's say that your CPU and board takes 50W, and one card takes 120W. For one card, it is 170W. So, if your board is fulled(let's say 4 cards), you'll need 530W to run it. BBy card, it takes:120W +50W/4 =132.5WIf your board is full, it takes a lot less electricity to run a card than if it is one card. So, don't plug a card alone, try to full a board.Sell the HDDs. Buy USB key. Switching from an HDD to a USB key, you can save around 10 to 20W. Also, HDD cost more than USB key. An USB key takes almost no power, does the exact same job as an HDD, and you can copy/install easily LinuxCoin on them. I know you don't want to sell, but I would<rest of post truncated>

### Reply 6:
Hmm. Well that makes it tougher. Not sure if there is a Kill-A-Watt equivelent.Another solution albeit more expensive is a clamp meter.Something like this (they do make cheaper ones but no idea if they are worth the money)<link> put the ""clamp"" around a wire like the power cable for your rig and it records the amps flowing through the wire. Volts * Amps = Watts.You can assume 240V but for better accuracy while rig is running you can use the probes to check voltage in a nearby outlet.

### Reply 7:
1. I agree that a killawatt is the best way to measure actual voltage.but I would venture an easy / simplistic way to do this job is just add up all the psu's max W. some will pull less, others will pull more, but you can bet it will be near that number.

### Reply 8:
Estimating is a FOOLS mission - wrong guesses & wrong answerslike assumingthe only real way to tell is measure itI cant believe you are in a country that is NOT 115V that don't have an alternative to the ""kill a watt"" meteryou do know about google don't you

### Reply 9:
I have a killawatt.I also know that a killawatt will measure up to about 1500 watts at a time, so you have to continually bring the rigs offline to measure them. i<rest of thread truncated>
","[
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    ""hardware_name"": ""GPU 2x 5770"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU 7x 5830"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU 16x 5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU 1x 5970"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU 1x 650w"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU 4x 700w"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU 1x 800w"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU 2x 850w"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPU 1x 555"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPU 5x 955"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPU 2x i3 2120"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Motherboard 2x msi p67a-gd80"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Motherboard 4x msi 870a-g46"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Motherboard 1x asus m4a79xtd evo"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Motherboard 1x giabyte ga880ga-ud3h"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Kill-A-Watt meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Clamp meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""HDD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB key"",
    ""hardware_is_owned"": false
  }
]"
4047,"Date: 2012-03
Topic: FPGA  development board  ""Icarus""  - 3rd batch payment start.
### Original post:
Just finally released my java Icarus miner (<link> Maybe ngzhang can give it a try with his fpga army I'm curious if it can handle that much boards.

### Reply 1:
New cgminer release (2.3.0) supports icarus.

### Reply 2:
Now that is good news.

### Reply 3:
Hey, wanted to ask people that received Icarus boards already - what was the declared value for the package? The real value of the products or some lower, arbitrary value? What kind of customs taxes did you guys pay?

### Reply 4:
It was a lower value - as it should be. No custom fees - once again as it should be.

### Reply 5:
That's good to hear. I was worried because here, everything that has a declared value bigger than 50 dollars gets taxed to hell and back. Even if it's for non-commercial use. First a 24% VAT and then another customs tax that for electronics can go up to 30% of the resulting sum. It's quite prohibitive. And I'm not that partial to paying more than half the value in taxes.

### Reply 6:
24% is crazy high. Let me guess you live somewhere in Europe? I hope someday we will live in a world where there will be free trade not just for big multinational corporations but for us regular people.

### Reply 7:
Yep, Europe. Used to be 19%. (No, I'm not in any of the PIIGS countries).

### Reply 8:
today i tested a fan failure issue. the board will get very hot and generate some wrong data (invalid rate = 10%), but still alive (in some hours).

### Reply 9:
What was the environment temperature in your test?

### Reply 10:
When do you expect to start shipping of the 3rd batch ?

### Reply 11:
Demo, looks like you are Portuguese...Not only the VAT is 24% but also if they don't agree with the value the border policy atributes a value they think its fair (as they know that the hell they are handling) and you only get a notice 30 days after it arrives (at least in Portugal) asking you to send them the invoice copy and you wait another 7 days...Even if you pay VAT for shipping to the sender... you'll pay VAT again for the total invoice plus taxes they say you have to pay for their service, the dog's food, the bird water the cousin toy, the uncle teeth... all of this if you want to get the product that you already paid for...

### Reply 12:
i'm doing the packing now!

### Reply 13:
Sweet

### Reply 14:
Will you be contacting the people who pre-ordered via email? I don't always watch this thread so I was just making sure.

### Reply 15:
What is the voltage range of Icarus ? 12v only or can i use higher voltages ?

### Reply 16:
designed for 10-14 V. 14.5V absolute.but only tested under 12V.waiting for the post- man now.....

### Reply 17:
23 centigrade

### Reply 18:
yes, i send about half of the email, then start the payment and ship. tomorrow another half, and payment, and ship.today i send out 10+ packages.

### Reply 19:
can't waitEdit: What kind of plug is on the cable for the power supply ? Almost every country in europe has a different plug

### Reply 20:
Is that true? I thought most of Europe has the same plug but not UK or Switzerland (and the Europlug still works in Switzerland actually).<link>

### Reply 21:
Many are different, but exchangeable.If you look at <link> type e for belgium and type f for the netherlands, many connectors in the netherlands have an extra hole so they fit in the wall in belgium.

### Reply 22:
so sorry... i only have US standard plug....but all 100-240V 50/60HZ

### Reply 23:
Not really a problem for me...

### Reply 24:
in China, most of geek use this kind of ""power supply panel"": this stuff compatible of nearly all plug standard.why not you guys use this ?

### Reply 25:
I don't know... but that looks wild. Is going to be ""cut and put"" a new plug on, no problem.

### Reply 26:
I'll be honest with you ngzhang. Innovation is dead in America. If a company can't patent it, they can't profit from it, so they don't even try.

### Reply 27:
That is a pretty ridiculous general conclusion to draw given the context. There is nothing exceptionally innovative about a universal power strip either. I'm sure plenty of people in both China and America use them.<link>

### Reply 28:
MADE IN CHINA

### Reply 29:
I have received my 5 Icarus test boards today from Beijing and got them up and running. Very professional packing, thanks ngzhang.I didn't get cgminer to work under Windows 7 so far so I am running 5 instances of RG7Miner for now.I have a universal power bar with 5 slots just like the one ngzhang uses, but unfortunately the way the power supplies are angled I can only connect 4 to the bar. The other one I plugin on a normal socket using a travel power plug (we are using UK plugs here in Hong Kong).I also connected the powerbar to my Brennenstuhl energy monitor (Kill-A-Watt kind device) and it shows 97.7W for 4 Icarus. This means I have around 2 GH/s with less than 120 Watt (+ notebook etc). I am pointing them at Slush's poo<rest of thread truncated>
","[
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    ""hardware_name"": ""Icarus miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Icarus boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fpga army"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power supply panel"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""universal power bar"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Brennenstuhl energy monitor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""travel power plug"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RG7Miner"",
    ""hardware_is_owned"": true
  }
]"
11688,"Date: 2011-11
Topic: Request for an RPC capable fork of cgminer  (115 BTC pledged so far)
### Original post:
I believe the bottleneck on pools is bitcoind internal code not the JSON RPC. I do agree JSON is very heavy but for the amounts of data we are dealing with here it is a non-issue. Personally I wouldn't use JSON but then again I am a windows developer so for interprocess communication my first thoughts are going to be sockets, memory mapped files, or named pipes.Really the entire bitcoind needs to be built from ground up for high performance. Using a real multi-user database, multi-core transaction engine, and some sort of higher throughput I/O interface like sockets. Honestly does anyone think if Amazon accepted Bitcoin they would use the existing bitcoind to process transactions? The community could use a high performance bitcoind.Why? How many I/O do you think need to be made against a single miner instance. I mean even polling for updated stats once per second is not going to be a bottleneck. Things like error reporting, changing clocks, and restarting instances are going to happen so infrequently to be even less of a non-issue.Nobody said that (except you). The bounty isn't limited to JSON. However just doing something different for the sake of different is dubious at best.As f<rest of post truncated>

### Reply 1:
Obviously I am not referring to this thread regarding comments about Satoshi.Anyone but a fool can see that no one mentioned Satoshi in it before my comment ...

",[]
14231,"Date: 2011-06
Topic: Help with BTCGuild Rainmeter script
### Original post:
I switched out of Slush's pool for a number of reasons. The API wasn't at a level I wanted it to be, I don't like the forced fee, etc etc...So I made a Rainmeter addon for monitoring my mining.Here's a picture.<link> bar meters are my current Hash Rates as reported by BTCGuild so I can see if there is a problem with 1 of my cards at a glance.There's only one problem. I have it hard coded for 3 workers, as that is what I have at this exact moment. If I want to add more, I need to physically add them. If I take one away, the regexp just craps itself and returns invalid results.Any rainmeter/regexp experts out there want to help?Here's the source <link> the regular <truncated> just found the closest text surrounding the data I wanted and used Code:(.*) to store what is between them. My problem comes with if I add another worker, then I need to add on to it, and then it changes the stringindex locations. My calculations are missing a worker. I need to set up a new graph, etc, etc etc.As you can tell by my beautiful code, I am an extremely talented coder (LOL)... Anybody have any advice, or inspiration in how I could get this to work with scalability?Or if anybody wants to take this adm<rest of post truncated>

### Reply 1:
Thanks for this. I had no trouble at all modifying it to monitor 8 workers and I tweaked the title into 2 lines. Still doesn't scale but it serves my limited needs... until I bring some more workers online and have to tweak it again.

### Reply 2:
I have one for BTCGuild as well if you ever switch pools. It also show real time stale % from each miner and an estimated worth of your current balance at BTCGuild.The source is just as messy and unmaintainable as my first one. LolEdit: Slush modified the API data a bit, so that original script might tend to show lots of blank results and leave tons of errors in your log. Here is a modified one with a few more fun things incorporated.<link>

","[
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    ""hardware_name"": ""cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""workers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  }
]"
20862,"Date: 2016-01
Topic: Silencing Antminer S5
### Original post:
You need to be Jr Member to have them displayed, so i quoted them for you. But the url you input are not the direct link, it has to be the direct link to the image, you're using redirecting links all over. However the onedrive links seem truly invalid. Anyways they arent working for me.

### Reply 1:
Ok. I upload them to imageshack

### Reply 2:
And the first picture in OP:

### Reply 3:
I wanted to make S5 as silent as I can. So I built a case which I lined with silencing mat. I brought a basket from IKEA and a heavy duty silencing mat from auto parts warehouse.<link> first attempt was only to drill holes to basket, but temperature rose fast too high.I bought case fan to push air inside the box and it helped. Temperature is now 63 on hotter board on default 350 setting. Hardware errors is almost 0.<link><link> is much more silent now.I will later upload youtube videoPs. how can I hotlink those pictures?

### Reply 4:
second photothird photo

### Reply 5:
Yes please post a video of a before and after. I think the best way to silence these S5 is to add a second fan and undervolt them.

### Reply 6:
I'm using this;<link> a two open ended rectangle of these covering 200 degree of the miner makes the S7 at 3500RPM quieter than the S5 at 2600RPM.

### Reply 7:
WHere do you buy that in Canada?

### Reply 8:
Home depot. Its pretty common, i'm expecting to be able to find some at Rona, too. There's most likely other places but i did not ask where he bought the panels originally. I just got left overs.

### Reply 9:
A video would be very nice indeed.The construction is simple enough, but I was wondering about the impact on board temperatures, even with a two-holes construction with pull/push air configuration. I had experimented a bit with S1 and S3 before and always found open air to be the most reasonable configuration.

### Reply 10:
Here is video<link> video exaggerates a bit, mic doesn't reproduce sound perfectly (or perhaps it is noice cancellation algorithm in phone) it is not THAT silent. Maybe i but another case fan to pull position. Those case fans are almost silent, so no problem adding another.

### Reply 11:
Yeah it sounds very silent. Do you have an Antminer S3? Is it quieter than that?

### Reply 12:
This is my first miner.

","[
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    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""case fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": false
  }
]"
14219,"Date: 2011-06
Topic: Confused Newbie...
### Original post:
Lost and not even sure of proper search terms...Cliff's notes - I think I'm getting the hang of the concept. I have puddingpop's cpu miner working for slush's pool. It's running @ 1.5 mhash per second when idle. I know that's not much but it's about double what this guy running the client on his playstation was bragging about in Dragon's Tale. What does Confirmed Rewards 4.4e-07 BTC mean? I'm pretty sure that all but BTC = something akin to silt in a gold mining situation and it all has to be processed/sifted through to glean the rewards.Firstly it took me a few days to get my computer up to it's best performance/speed and get the hang of using a miner. It's just a laptop with 2ghz of cpu maximum. I can't use the gpu(b4 anybody tells me to) as it's intel. I'm just happy to have gone from a few hundred khash per second to 1.5mhash per second on average when idle. B4 anyone says anything about heat - I put it on a milk crate when idle and it doesn't get as hot as when I use an app that's really taxing. Was thinking that attaching old desktop fans to the crate would be good for the health of my laptop in general.(whether or not I keep trying with mining)As best I can figure it out I'm<rest of post truncated>

### Reply 1:
e-07 is usually shorthand for x10^-7. So 4.4e-07 would be 0.00000044 BTC.

### Reply 2:
e-07 is notation to denote an exponent. In actuality, you have 0.00000044 bitcoins. Notice how your 4.4 was shifted backwards 7 places.

### Reply 3:
TY. I figured there had to be less than what appeared @ a glance based on the setups of others. I just didn't get how or what was going on.0.00295243 BTC unconfirmed but it's reading .003 unconfirmed inside the miner...so still confused.

","[
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    ""hardware_name"": ""cpu miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""playstation"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""intel gpu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""desktop fans"",
    ""hardware_is_owned"": false
  }
]"
14123,"Date: 2011-06
Topic: 400ghps gaming rig interested in joining a pool, please suggest.
### Original post:
If you're looking for quick payout, try Deepbit.netIf your looking for smaller pools (you'd get more of the block, less often) try bitcoins.lc

",[]
10949,"Date: 2021-05
Topic: mining problem with R606
### Original post:
Good evening everyone.I am new to mining. I have just purchased a Terminus R606. I am using windows 10. I managed to install what it takes to start the R606. I run cgminer in admin mode I enter the address for mining: stratum + tcp: <truncated> 9991my username (Ltc address) and password.It starts but I still have this message that appears:[2021-05-27 22: 02: 10.433] Pool 0 message: Authorized, welcome ltc1 <truncated> <truncated> ...... [2021-05-27 22: 02: 10.433] Pool 0 difficulty changed to 2000 [2021-05-27 22: 02: 10.433] Stratum from pool 0 requested work restart [2021-05-27 22 : 02: 12.042] Rejected 03949300 Diff 18.3K / 2000 GSI 0 (Above target) [2021-05-27 22: 02: 15.725] Rejected 1745d916 Diff 2.82K / 2000 GSI 0 (Above target) [2021-05-27 22 : 02: 36.600] Rejected 12171b2f Diff 3.62K / 2000 GSI 0 (Above target) [2021-05-27 22: 02: 36.952] Stratum from pool 0 detected new block at height 2059859 [2021-05-27 22:02: 39.324] Rejected 1a8f0c4f Diff 2.47K / 2000 GSI 0 (Above target) [2021-05-27 22: 02: 50.234] Rejected 043fca06 Diff 15.4K / 2000 GSI 0 (Above target) [2021-05-27 22: 02: 53.284] Rejected 10c949da Diff 3.9K / 2000 GSI 0 (Above target) [2021-05-27 22: 02: 57.941] Rej<rest of post truncated>

### Reply 1:
For starters the R606 is for mining SHA256 algos. I have a suspicion you're mining a different algo (hence the LTC address as username).

### Reply 2:
yep. LTC is a Scrypt algo and the R606 is SHA256 only.

### Reply 3:
It's like you are trying a Phillips screwdriver for a Torx screw head Like others have said, R606 miner is for SHA-256 algo coins only.

### Reply 4:
Also, there is a support thread for this unit. It would be best to use it instead of starting a new thread.

","[
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    ""hardware_name"": ""Terminus R606"",
    ""hardware_is_owned"": true
  }
]"
4115,"Date: 2012-06
Topic: selling 10 ICArus boards 4th batch
### Original post:
So close to quote that! No worries!The whole rig is 10 fpga+usbhub+tp-link 703n+psu

### Reply 1:
Hmm, I wonder if you'll have a hard time selling these now that BFL is releasing ASIC miners. Who knows when they will actually come out but I'm curious if anyone is holding off on fpga miners because of their (BFL's) announcement. Good luck with the sale though!

### Reply 2:
If cant sell this wonderful plug and play rig I'll mine until the last profitable share. Not worried at all Thanks.

### Reply 3:
Wouldn't you rather sell it cheaper NOW just to get rid of it, in case ASICs were a bit closer than we all think ?I realize it would mean a larger-than-desired loss, but look at what might end up happening if BFL releases their ASICs before the end of the year.If FPGAs take upwards of 12+ Months to break even and they are worthless in 6-8, what incentive is there for anyone to buy them ?....not trying to crap on your thread, because BELIEVE ME, I am about 5 seconds away from buying the lot from you....but I am just worried, like everyone else.bitlane.

","[
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    ""hardware_name"": ""fpga"",
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  {
    ""hardware_name"": ""usbhub"",
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  },
  {
    ""hardware_name"": ""tp-link 703n"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": false
  }
]"
16241,"Date: 2022-04
Topic: Looking for data center operators
### Original post:
Hi,we plan to start mining on our own. In the beginning we start with some dozens of the latest Antminers (not S19, currently) and plan to increase the number of units up to 500 within the next 3-6 month and some thousands within the next 12-24 month.I need some help (i.e. with network hardware) to build a reliable infrastructure for such many units. Is anyone here, who can help with building a (private) mining data center?BestBTW: I do not want to talk about reliability.

### Reply 1:
Hello, I can help. I have a team and we are currently working with the 2nd largest power supplier in Russia, just launched 5MW facility and building more. The plan is to launch 50MW this year and 2GW within the next 5 years. We can help with building construction, electricity, networking parts.P.S.We have a representative in the United States, who can travel to your location and manage work on site.I just sent you a DM.

### Reply 2:
How many MW? minerdude has a great read here.I have quantities of gear (s19's) a few on hand and more on the way (these are at my job not mine perse I just get some crumbs) I accept escrow too.

### Reply 3:
Are you guys still mining? I would assume so but just wondering.

### Reply 4:
Yep, there's no changes. There are not so many places in the world with the cheap electricity and acceptable weather conditions, so it is in demand.

### Reply 5:
Hi, I can help you out. We have professional mobile mine boxes, each of which can hold 220 sets of S19 pro 110t. The temperature control system and all electrical arrangements have been integrated. The mine box to your mine only needs to be connected to the electricity to start mining, and it is very cost-effective.We already have our users in the United States, you can go to investigate.

### Reply 6:
I can do this. I've been datacenter engineer for 20 years almost. Power here in Oklahoma is cheap at 4.3 cents a Kwh and I know how to get cheaper 480 drops from the power company. The is nestled basically between (miles) of 2 120Mw hydro's and purhase power agreement (PPA) with wind. I was going to do it myself but everything tripled over night and I got cold feet. But I still think it would be fun to head something like this up. The new hydro cooled bitmains with 3 phase power supplies looks like the way to go. Billy

### Reply 7:
I can help you out! Send me a DM currently building a new warehouse this spring myself.

### Reply 8:
Hi,we are experienced miners and are building a software that can help you even offer hosting to retail miners if you so wish. We also have contacts with locations that might be able to host you without you having to invest CapEx in your <truncated> me via PM if you are interested.

### Reply 9:
Are you guys aiming to offer retails customers hosting services? or just mining for yourselves?

","[
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    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""network hardware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19's"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""mobile mine boxes"",
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    ""hardware_name"": ""S19 pro 110t"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""hydro cooled bitmains"",
    ""hardware_is_owned"": false
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]"
16613,"Date: 2011-06
Topic: PCI-e 1x extender in PCI-e 16x slot - possible??
### Original post:
I've currently got 4x 5870's in a rig, each connected using a modified 1x PCI-e extender to a GA-770T-D3L motherboard. PSU is a 1000watt Coolmaster SilentProM and is showing sub 650watt currently.3 of them are connected into a 1x PCI-e slot and are recognised with lspci and run poclbm happily enough.1 of them is connected into a 16x PCI-e slot. This does not show up with lspci.I've not done much more investigation on this, but I was wondering, is using a 1x PCI-e extender from a 16x slot to a 16x card possible? I was sure it was. Is the motherboard being picky about the type of card in the slot?

### Reply 1:
You have to bridge the pins... A1 and B17 or something like that. Search.

### Reply 2:
I did try searching, but obviously using the wrong terms.Eventually opted for a 16x PCI-e riser... didn't want to mess around and potentially brick a motherboard, time is money, you know.The 16x PCI riser does the trick, can now get 5 cards in and the machine <truncated> I can't seem to get the ATI fglrx to work with 5x 5870's. Whenever X starts the machine halts. Can't seem to get anything meaningful out of Xorg.log, syslog, dmesg, etc etc.

### Reply 3:
i've bought one of these<link> for it to arrive

### Reply 4:
Wow $6, good deal. Sorta makes me wish I hadn't balanced my PSUs so perfectly with my rigs. Ah well c'est la vie.EDIT: Seems to be blocked in america anyway?

### Reply 5:
blocked in america? search ebay for ""PCI-E 1x to 16x adapter"" works for medoes anyone know with the one i've purchased if it will require modifications to work?

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    ""hardware_name"": ""5870"",
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    ""hardware_name"": ""GA-770T-D3L motherboard"",
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    ""hardware_name"": ""1000watt Coolmaster SilentProM"",
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    ""hardware_name"": ""1x PCI-e extender"",
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    ""hardware_name"": ""16x PCI-e riser"",
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    ""hardware_name"": ""ATI fglrx"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""PCI-E 1x to 16x adapter"",
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]"
14148,"Date: 2011-06
Topic: What is going on with deepBit?
### Original post:
The website seems to be fine but the mining servers are coming and going.

### Reply 1:
You could simply read the deepbit thread.

### Reply 2:
Doh! Missed it completely.

",[]
11941,"Date: 2012-06
Topic: poclbm.exe and cpu usage
### Original post:
o.0 I literally just typed a whole paragraph down and then went ""wait what the fuck. he's got the optimum drivers... the bug should be gone""Is your aggression really high? I hear that somepeople get cpu usage from that... But your at 100%, Suggesting that peices of other drivers are still laying around, Still causing you the bug..

### Reply 1:
I did have 11.12, and installed 12.1 over it. I am using these flags -v -w128 -f 1 on both miners.I been sitting here mining the whole time, thinking, man, didn't they fix this. So had to ask, what is going on.

### Reply 2:
Try going back to CCC 11.12. I didn't experience any CPU bug with the same settings when I had 5xxx/6xxx cards.

### Reply 3:
And if I recall correctly, back in nov-dec 2011, the cpu bug was still there, but for some, it was fixed and others not.

### Reply 4:
IIRC, 11.12 and beyond come with 2.6 SDK, not 2.5.Anyways, I use 11.12 + 2.1 SDK on all my rigs and phoenix 2 miner, no cpu bug12% cpu indicates you have an 8 core cpu? If its a single core cpu though.. 12% sounds ""ok"" to me, might have a weird setting which causes exponentially higher cpu with higher aggressions/lower -f flags. I had that for a while, but it eventually fixe ditself with a driver change, but I dont know which. It was a long time ago.

### Reply 5:
I am sure 11.12 comes with 2.6 sdk, but as stated, I have 12.1 with 2.5 SDK installed.Yea ppl keep telling me they are using 2.1 with 11.12, dunno how but they are.I have a duel core processor with HT. I3-2100.

### Reply 6:
So you have Four selectable cores? 12% isnt that bad atall... it would be at 25% if you had a Bug pegging your core, have you tried messing with the -f param?

### Reply 7:
Yea, the cores aren't fully utilized, for core 0 is for workerone, core 1 is for workertwo. If I set core 0 for both workers, either workerone or two will get horrible mhash/s.Crap, that is what the problem was. I changed the f 1 flag to f 10, I am receiving 00 cpu utilization on both miners. Why would this be?

### Reply 8:
Small donation sent to you, jackrabbit & ssateneth.

### Reply 9:
Lower f number = higher aggression = typically more cpu. It means the GPU is working a larger set of nonces before finishing work and asking for more.If poclbm -f argument is anything like diablominer -f, it is essentially trying to complete an entire kernel run -f amount of times per second. Assuming a 1 ghash/sec GPU, -f 1 would attempt to complete an 1 billion hashes in a single kernel run before asking for more nonces to hash, which would be about once every second. -f 10 would attempt to complete 100 million hashes per kernel run, requiring new nonce ranges 10 times per second. -f 100 would do 10 million hashes per kernel run and ask for more nonce ranges 100 times/second. Requiring new work more often generally leaves the gpu more open to other requests, such as rendering desktop, or games, or whatever, which means less lag.Some drivers had a bug that made high cpu usage with higher aggressions.Lastly, people use 2.1 SDK by installing the standalone SDK here <link> or locating it on AMD's website (The .msi I linked is part of the package that AMD offers for 2.1 SDK, but it is the only thing you need to enable 2.1 sdk. Everything else is useless as far as mining goes). It is a<rest of post truncated>

### Reply 10:
Ok, I got the standalone installed. I see the extra devices under GUIMiner. It's mining away with 12.1ccc & 2.1 SDK.From what I can tell for 2.1 & 2.5, either they both seem to mine away at the same speeds or 2.1 might seem more stable at mhash/s or 2.1 seems like it might have lost 1 or 2 mhash/s. Very hard to tell if there is a difference. And actually, my desktop is laggy when 2.1 is used in which I believe you had stated something about this previously. Good to know that I got this working though, with 2.1 and learned about the extra devices.So, from your experience, what difference can you tell between 2.1 and 2.5?

### Reply 11:
2.1 is generally a more aggressive SDK. You will notice more desktop lag and even mouse lag at lower aggressions on 2.1 compared to 2.4/2.5. It's great for dedicated 5xxx/60xx-68xx cards. You may need to use slightly different memory speeds or miner/kernel settings, but for me, its a couple mhash more per card using phoenix + phatk2

### Reply 12:
Thankyou so very very much!, I have not yet loaded my client to see the amount but im still super happy to have finally gotten a tip for attempting to help

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16849,"Date: 2011-07
Topic: Sapphire 5850 Xtreme: GPU load: 200% !?
### Original post:
Soon before the whole machine stopped working. The first card had already stopped working for a couple of minutes:Code:$ DISPLAY=:0 aticonfig --odgc --odgt <truncated> 0 - ATI Radeon HD 5800 Series Core (MHz) Memory (MHz) Current Clocks : 0 0 Current Peak : 825 900 Configurable Peak Range : [550-900] [900-1250] GPU load : 200%Adapter 1 - ATI Radeon HD 5800 Series Core (MHz) Memory (MHz) Current Clocks : 825 900 Current Peak : 825 900 Configurable Peak Range : [550-900] [900-1250] GPU load : 99%Adapter 2 - ATI Radeon HD 5800 Series Core (MHz) Memory (MHz) Current Clocks : 825 900 Current Peak : 825 900 Configurable Peak Range : [550-900] [900-1250] GPU load : 99%Adapter 0 - ATI Radeon HD 5800 Series Sensor 0: Temperature - 127.50 CAdapter 1 - ATI Radeon HD 5800 Series Sensor 0: Temperature - 75.00 CAdapter 2 - ATI Radeon HD 5800 Series Sensor 0: Temperature - 69.00 C

### Reply 1:
Thats a little warm. Did you smell burning plastic?

### Reply 2:
I am working remotely. The machine was dead a few hours ago, so I asked someone else (who has little computer skills) rebooted it. Soon as it get booted, I sshed to it and reconfigured all the three video cards to slower 825 MHz core / 900 MHz ram frequencies, and then started the miners. Just a few minutes later, the first video card stopped working, I sshed to it again and it shows me as above.

### Reply 3:
Dam that's a haxor 5850.

### Reply 4:
I was extremely unlucky these days... My notebook was broken, it suddenly turned on itself last night in my bedroom and turned itself off after a couple of seconds, after a few minutes, same thing happens again, but never respond to my power button press. It's like there were some ghosts in my room. I ordered 20 HD5850 but only 16 of them work, even these 16, 5 of them need daily reboot. I ordered a dozen of (secondhand) motherboards and only half of them work as expected... I can't believe it's just due to hot weather or secondhand hardware. There must be some fengshui problem in the new garbage...

### Reply 5:
I need someone who knows fengshui to show me how to arrange my hardware to maximize my mining chi.

### Reply 6:
Sensor 0 or 3 is usually the VRM (voltage regulator module) on the GPU. Temperatures of 90 to 130c are quite usual on air cooling, and the VRM's are specified to take this kind of heat (esp. the relatively expensive Volterra modules on 6990's which can take temps of even up to 150c without throttling)On normal cards (non 6990) 135 to 150c will degrade the VRMs very fast or kill the card in 24/7 usage.

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  },
  {
    ""hardware_name"": ""notebook"",
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  },
  {
    ""hardware_name"": ""motherboards"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Volterra modules on 6990"",
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]"
22862,"Date: 2019-02
Topic: S9 Hydro not reporting or connecting
### Original post:
Good day allI finally got off my ass and setup two of my hydro miners.cold as hell hereI have awesome miner, which matches the reports of the two miners. each at 18.44THbut when I goto antpoolinstead of <truncated> now have only one miner showing as Takagari.1at 358GH/sI tried putting a miner onto my slush pool and it simply never connected.Prior to this I was having issues with my e3 connecting then dropping quickly.I feel I may have an issue in my network? something I can't seem to find.Any thoughts on where I should look? what I should try?I am in the process of changing my cabling now.Thanks

### Reply 1:
Can I ask why the hell are you mining at Antpoo(l) ?

### Reply 2:
it will take time to report full hashrate, also try to restart your router ? as far as slushpool goes, i still want to see the configuration page to determine any typos, usually a leading space keeps you from connecting.

### Reply 3:
this is because you use the same worker on the two miners.go to your miner configuration. name the workers as followsfirst miner :Takagari.1 second miner :Takagari.2 you might be putting the wrong setting, can you post here how do you configure slush pool worked?if antpool is working fine, then it's unlikely to do with your network, you just need to ensure you are using the right server that is close to you and using the correct settings.just post screenshots of the configuration, will be able to tell you what exactly needs to be done.

### Reply 4:
i do not see that as my workers are Takagari.S9H002 and Takagari.S9H001but I will try just .1It never connected to slush at all, and shows wrong stats on antpool.<link>

### Reply 5:
I do not believe that's what I was asking for advice on?but as I stated above, I can not get a connection to slush.when I put in the slush info, it doesn't even mine. the miner itself will mine on antpool, but is only reporting a fraction to antpool.if antpool info is in. it will show on Awesome Miner. if I use the slush info, it does not come online on Awesome Minerpastebin of the kernal and minotor for the one I'm trying to connect to slush<link>

### Reply 6:
are you following the exact details?please copy paste from this URL <truncated> "" username should be your slushpool <truncated>

### Reply 7:
some progress, i got one to connect to ViaBTc. its slowly climbing up at 5 TH currently.NO idea what I've changed. but I could not connect to slush. no matter what I try

### Reply 8:
One of your screenshots shows a unit with a single fan running at 600 rpm, the next screenshot shows 5 fans reporting. I have not personally touched an s9 hydro but either of those numbers would be cause for concern on a standard S9

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  },
  {
    ""hardware_name"": ""e3"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""s9 hydro"",
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11720,"Date: 2012-01
Topic: Extremly slow minting?
### Original post:
Last BTC block was minted 2 days and 5 hours ago.. Whats up with this? Really bad luck?

### Reply 1:
Solo? Pool? Where? Lots of blocks have been mined in last few days.

### Reply 2:
Please check your sources.Here is a good one -> <link> also be more clear. Are you talking about your pool? The network in general?

### Reply 3:
Well i assume you are talking about our current block at bitminter. Yes it is bad luck but 4000000 shares is by far not the worst i have seen.Edit: Since our hashrate is below 100 GH/s it takes some time to mine such blocks down. Other pools do 8 million blocks in one day or even faster but with less reward.

### Reply 4:
<link> other big pools are there?

### Reply 5:
There are many. Look in ""Pools"".

### Reply 6:
CDF of 97% currently<link> thats bad luck. But only a few days ago we minted 6 blocks in 24 hours, with a lower hashrate at that, so I wouldnt feel too bad yet It just goes with a small pool, you have lucky and not so lucky days. But in the long run you will earn more than with the big pools, because you dont pay a fee.

### Reply 7:
Worst ever block by a pool is ~24 million shares so far as far as I'm aware, but that was at a higher difficulty. If a new pool were to have that as their very first block ever there's a good chance they'd go bankrupt before they found the block...

### Reply 8:
For example, <link> with over 3100 GH/s of hashrate :)

### Reply 9:
And a, what is it, 3 or 4% fee?The bad luck block has been solved meanwhile, as well as 2 more blocks in the same day averaging miner revenue out already at or maybe above average.More importantly perhaps, huge pools like deepbit give their operators a dangerous amount of control over bitcoin. Luke Jr take down of coilcoin shows this potential. I think its better for cryptocurrencies if hash rate is spread out as much as possible, which is one reason Ill never mine for a pool with more than ~20% of the hashrate.

### Reply 10:
It's stated right on the main page, 3%I have the best fees ever :)

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4092,"Date: 2012-05
Topic: [ANN] ShaLab
### Original post:
Hi, for the past few months we have been working hard on our answer to the future of mining - industry grade scalable cryptographic <truncated> products are in the final stages of development and are in the first line to be available soon:- SHAman Master- SHAman Slave- SHAminiMore information will be published on <link> in the following days.All best from Slovenia - Europe,ShaLab Team

### Reply 1:
It better match BFLs Mini-Rig in every criteria Speed/Price/Watt otherwise not even worth launching.

### Reply 2:
even if the hardware is slower, they may be able to compete simply by filling orders / replying to emails much faster.

### Reply 3:
cool story broLet me tell you and your potential costumers this: It's always better to come out with a product with community involvement even before the planning stage than doing it silently behind closed doors. Also we don't need another closed source mining appliance.

### Reply 4:
watching

### Reply 5:
Interesting. More details please!

### Reply 6:
I'm always concerned when a company has fancier graphics than products

### Reply 7:
Code:<body <truncated> width:99%;"">

### Reply 8:
I'm always concerned when a website needs jquery to dynamically resize an image...

### Reply 9:
So this was the real project for the $500k to CoinLab. Interesting. (sub)

### Reply 10:
i like Slovenia because i don't have to pay import taxes watching

### Reply 11:
[insert pointless sub'd comment here]

### Reply 12:
torpedoed...

### Reply 13:
Boom. (or sploosh?)I'm interested though. Can we have an planned shipping date?

### Reply 14:
watching

### Reply 15:
Ouch, I just ordered a BFL mini-rig. Watching...

### Reply 16:
Am I the only one who only sees a picture on the website and have no idea what specs and/or prices the products have?

### Reply 17:
The word Slave is considered very offensive in some countries in Europe, and was even removed from computer literature for that reason, (we used to have master/slave, now we have primary/secondary) you might want to consider renaming your product otherwise you come across as insensitive unethical company.

### Reply 18:
... LOL ...... just LOL ...The world is fucked

### Reply 19:
I bet this is scam/joke.1. User with no posts2. Childish names of the product3. Childish logo design on website4. No real info5. description ""future of mining - industry grade scalable cryptographic infrastructure"" what the hell does that mean ? we just want a profitable box that we can run at home not a whole infrastructure.

### Reply 20:
I'm not betting against you, but here are a few comments on your points:1. He probably joined bitcointalk.org just to spruik his product. bitcointalk.org != bitcoin.2. That'll probably change when someone with english and marketing skills has a chat with him.3. There is no way any child could create that image. Teenager, certainly.4. That's the norm for product announcements around here. Much of the time anyway. I agree, some info would be useful. Most scams have a plethora of information to give out and attract victims.5. Maybe to imply it will have multiple uses? Not sure.

### Reply 21:
BFL didnt have any posts either just a website with false fgpa stats and price.why are the product names childish? clearly shamini is the smallest/weakest and they built up exactly like BFLYup a circle with some lines it is makes it soooo childish. you must hate adidias's logo 3 lines that make a triangleI agree at least BFL put up something even is it was falsesounds like he is saying its is easy update mining farms

### Reply 22:
Why do I feel like I have just been Rick Rolled

### Reply 23:
cool picture

### Reply 24:
Yeah. Am I the only one thinking this is copying BFL's product structure too much Probably a scam ...I have more faith in BFL than these folks from Slovenia. Who can find them there if they run with the $$$. Do you accept BTC as payment

### Reply 25:
Yea i see a manual <link>

### Reply 26:
To the two posters above making harsh comments:You have no logic backing any of your reason. I'll just leave it at that.

### Reply 27:
LOL. Nice one. Never saw that before. Says loads about their credibility and technical knowledge. Where can I place my order, dear sir ?

### Reply 28:
I am all for new technology. But if your going to announce something.. Make it worth while

### Reply 29:
Meh. It is not rare, even for ""professionally"" designed websites, to accidentally configure the Apache manual to be accessible online...

### Reply 30:
notation...

### Reply 31:
I have to ask, who the f*ck are you to questions anyone? It says SCAMMER in your profile. So please be kind and GTFO.

### Reply 32:
Big difference between a website with text, images, product pictures and description, several pages, address, phone, contact form.....and a website that only hosts a single .png picture that stretches across your screen

### Reply 33:
Tomorrow I have a meeting with a member of ShaLab.So sta<rest of thread truncated>
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22659,"Date: 2018-07
Topic: Restoring Bitmain Firmware (V9, T9+, others)
### Original post:
There have been some posts about loosing connections to the V9 miner.Also some people have had issues with the new T9+If you take a look here:<link> can get the downloads to burn a SD card to restore your firmware.***The T9+ is not the same as the T9***If you put the wrong firmware on you will probably own a paperweight.-Dave

### Reply 1:
Here are the files from the above posted link.Which are needed on the SD Card?If S2S4S5S7-img is one of the needed files and the V9 .tar is the other is it a two step process?That is burn the S2S4S5S7-img first then on another SD card run the .tar file ?or can you just put all the files on one SD card and let it run?These two files from Tools and Instructions to Image SD cardDiskImager Application 88 KBS2S4S5S7-img Disk Image File 512,000 <truncated> <truncated> gz Archive 16,459BOOT.bin BIN file 2.688 KBdevicetree.dtb DTB file 8 KBuImage File 3,762 KBuramdisk.image gz Archive 12,441 KB

### Reply 2:
If you put a wrong firmware it can result of deadboot or it can brick your miner without any software solution. You must put a correct firmware for t9+ How about using this firmware from here <link> use the sd card tool to make a sd card bootable and put the firmware inside the sd card?

### Reply 3:
I think after much reading I know the sequence.Note in DaveF link above there is a V9 version of the firmware.So first you download v9-SD Tools.zipThen unzip that and get :DiskImager Application 88 KB and S2S4S5S7-img Disk Image File 512,000 KBThen - using the Diskimager program - you put the S2S4S5S7-img file onto your SD Card. Then load the SD card software into your miner on a startup.With luck you should end up with a miner that will get into the normal miner program.Then using the update function from within the miner you update with <truncated> which you should have downloaded to your computer previously.The only file that ever gets put onto the SD card is the S2S4S5S7-img Disk Image FileI would feel better if the name of this file included V9 but the title does say v9-SD Tools.zipThe main software ( <truncated> ) gets updated from within your computer NOT the SD Card.At this point I am not ready to try this so cannot say it works. Use at your own risk!Comments please if you think this is the correct method or is a wrong method. There seems to be very little info available on how to use the SD Card. Maybe they think it is so easy us newbies should already know.

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21454,"Date: 2017-06
Topic: Upgrade Mobile-Mining?
### Original post:
Is it possible to upgrade the Hashrate from a Smartphone? How could this work?

### Reply 1:
I don't quite get your question here...Are you asking about mining on your mobile (short answer: VERY, very bad idear).ORAre you asking about controlling your farm from your mobile phone (this depends on your specific setup, IMHO, more info is needed)ORAre you asking about buying cloud mining hashrate (short answer: bad idear)OR Are you asking something else?

### Reply 2:
I asking about mining on mobile phone with services like Minergate.This is not about good or bad idea, i just ask are the possibilities?A technical question, not investment.

### Reply 3:
Why in the world would you mine BTC using your phone. Its almost impossible for SOME ASIC to solve blocks, phones I think have no chance. Spend thousands of USD to mine ETH or ZEC with your graphic cards than phones. Kilowatt is just not free for everyone though.

### Reply 4:
Yes, theoretically it is. Some people created an app for android which you could potentially use to mine for BTC and some other crypto currencies.However, if you start running them, your phone will overheat in a matter of minutes, significantly reducing the lifespan of your mobile device, consuming a lot of power while generating fractions of a dollarcent per year.<link> A9 generates 1.3 Mh/s:<link> current diff and block reward, you'd get 16 satoshi's per year (~0.0004622 USD at current BTC price)... given that you're able to find a single share that year (not guaranteed)

### Reply 5:
If it's a good, current phone, it's not worth the wear and tear. As for really cheap ($20 and less) smartphones purchased just for (altcoin) mining, I have had good success breaking even in less than a month but that was well over a year ago. (My personal best was $5 smartphones breaking even mining Perk in about a week! But that's almost 2 years ago...) Nowadays, it's not a particularly good bet unless you already have an old, otherwise unused phone or tablet just lying around.My suggestion for energy efficient mining nowadays would be Burstcoin or Storj.

### Reply 6:
i think its possible if we know what we need to do to upgrade the hashrate but i want to asked something, for what you want to upgrade your smartphone? is it for just mining? if you said yes its for mining only, then i will say that its not recommended and its better for you to buy some hardware to mining and you can get bigger hashrate then you only used your smartphone. smartphone is not designed for mining and although it is, then i think you need high end smartphone for mining.

### Reply 7:
Actually the opposite, high end smartphones are *not* good for mining. A $250 Le Pro 3 would mine faster than a $20 Moto E, but nowhere near 12.5x as fast. You'd be hard pressed (especially nowadays) to break even mining with a high end smartphone before it breaks down. Even cheap smartphones are a gamble when it comes to mining nowadays, with break even periods being around the same 3-4 months you would get with Burstcoin mining on a hard drive.

### Reply 8:
A friend of me and i were discuss about using free charge and internet with an mobile phone which is upgraded with an extern hardware for mining possible altcoins via a service like minergate.This thread is just the question, is it possible to build a ming mobile phone - or better to say, a portable miner.

### Reply 9:
mining with laptop is just a waste of time...mining with cellphone is just a (waste of time)^2... maybe (waste of time)^3 this is just my 2 cents

### Reply 10:
Mining Bitcoins with anything other than ASICs is a waste of time.But there are altcoins that are ASIC and GPU resistant. Some of those are worth mining on an old laptop or cheap smartphone.

### Reply 11:
that's ture.I'm mining verium and it seem ASIC GPU resistant.Some GPU mining software programmers have tryied to develop a GPU Verium miner.They reach just the same hashing power than CPU...nothing more..but i'm mining with i7... i doubt who same hashiong power will be reached with iPhone or S8.

### Reply 12:
High end smartphones aren't good for mining because of their high cost, but cheap smartphones can be worth it. Back when Perk mining was profitable, some have tried using VMs to mine only to find out that the performance is very poor, that is if they could get it to run in the first place. (The Perk miners use ARM native code and won't run on x86. If you fake an ARM CPU, the net performance is very poor.)Besides, for $80, you can get 4 Moto Es that would altogether use maybe 10W or so. Good luck trying to find a PC that costs less and uses less power for the same performance, especially after factoring in emulation overhead.

### Reply 13:
if you want to run this road, i think is better to use something like RaspBerry PI3 or ODOID XU4much more hashing power than cell phones and cheaper...oh... it consume a few watts of course

### Reply 14:
Actually, t<rest of thread truncated>
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    ""hardware_name"": ""Moto E"",
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    ""hardware_name"": ""Laptop"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""i7"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""iPhone"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S8"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""VMs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RaspBerry PI3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ODOID XU4"",
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11643,"Date: 2011-09
Topic: Why doesn't anyone write a way to fake cores?
### Original post:
Is there any way to write a program that fakes a third core on a dual core CPU that runs at like 10 Mhz (1/300 of the power of a real core) and set the affinity of the miner to it?

### Reply 1:
Because even if it's possible it would be easier to just reverse engineer ATI's stream SDK and fix the bug...

### Reply 2:
OK, go on!

### Reply 3:
How did you get out of the newbie section exactly?

### Reply 4:
spamming until 5 posts

### Reply 5:
If this is a newbie question we need more newbies. It's a brilliant idea and there already exist a program for Linux called CPU limit that does what he needs, just not quite the way he suggests.

### Reply 6:
Absolutely brilliant! This got me thinking and googling. It appears that you can throttle CPU usage by SID (user) in Windows 7 <link> can run a process, say guiminer (and maybe poclbm?) as a different user: <link> it should be possible to run the miner under a different id, then then throttle the cpu usage of that user. I haven't tried this out yet - The family and I are about to go to the circus, but I thought I'd throw my thoughts out to the brain trust and see what they come up with. Otherwise, i'll dork around with it this afternoon.

### Reply 7:
Okay so as an update. I was able to create a new user, run guiminer under that user which also ran poclbm. I then throttled the user account to 5% CPU....and watched my miners only pull in 50 Mh/s I bumped it up to 20% and the Mh/s increased to 100. So it would appear that the CPU usage is tied to the hashrate of poclbm.

### Reply 8:
How did you get out from under your bridge exactly?Trolling should be renamed 'diking'.

### Reply 9:
A bit of it is tied, but I underclock my cpu's without affecting hashrate. You just need to reasonably do it. Having one program hog all the cpu resources in any way, leaves a bottleneck for lack of cpu to do basic OS management and do the network to gpu work.

### Reply 10:
I ended up installeding 11.6 and use a dummy plug that I have to move from one card to the other every time I reboot. It sucks, but no CPU usage problem.

### Reply 11:
you can use something like you could probably vmware it as well

### Reply 12:
So all these people running drivers > 11.6 and forcing the miner to a single core are losing hashes?I'm guessing there's a breaking point otherwise the above would be true (probably 1/#cores % ), surely people would notice before and after rates.

### Reply 13:
Correct about the breaking point. IIRC, I played with it a little bit and found that around 80% throttle would let me reach my full hashrate. If I set it to 90% it was the same hashrate as 90%. Since having the CPU run at 80% isn't much different than 100% for the effort to set it all up and maintain, I dropped it and just let it run at 100%

### Reply 14:
Is this a windows only problem perhaps? CPU load under ubuntu is 0.5% while producing 320MH/s (5850).

### Reply 15:
If you want to reproduce the nice high CPU loads on linux as well, you can too, by upgrading from the 11.6 catalyst driver to 11.7 or 11.8.

### Reply 16:
Im not sure what version Im running.. its the one recommended, and AMD numbering doesnt make a lot of sense to me. Which version is this?[/URL]

### Reply 17:
Looks like 11.3 to me.

### Reply 18:
That could explain it. Its the one jockey-gtk (""hardware drivers"" app) installs by default for ubuntu 11.04.

### Reply 19:
Yeah, you gotta get the latest and install them by hand. I use:<link> Linux mining, and I've had no issues. I use Phoenix with a custom kernel instead of what they recommend (poclbm?) but if you follow all the steps it should work.

### Reply 20:
Seems like I better not. Works fine with 11.3 or whatever I have. Pretty much no CPU load at all.

### Reply 21:
The shitty thing is that if you have a decent CPU the ""CPU big"" is costing a lot of wasted wattage.Restricting CGMiner to a single core (@ 100%) reduced power consumption at the wall by 40W. Make me think we would save another ~10W if it had no CPU bug.Is there any way to setup an ""automatic CPU afinnity?"". i.e. anytime program ""CGMINER.EXE"" launches it is restricted to core #3?

### Reply 22:
The closest thing to that that comes to mind would be disableing the cores in the bios, although someone could probably cook up a script to set a program to core4 anytime it's launched

### Reply 23:
for win7, use shortcut like <truncated> /c start /affinity 2 /d <truncated> <truncated> -u <link> -k phatk DEVICE=0 VECTORS AGGRESSION=12 BFI_INT WORKSIZE=256 -q 1affinity 2 is 3rd core

### Reply 24:
Awesome jkminkov thanks.

### Reply 25:
Hmm... I see people haven't heard of this <truncated> 'ya go kids, have a blast. It's a process CPU-throttling application. Yours to keep.

### Reply 26:
On Catalyst 11.8 drivers I get a drop in hashrate in cgminer when I throttle the CPU with BES.Catalyst 11.9 drivers will be out in a few days anyway

### Reply 27:
I have f<rest of thread truncated>
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    ""hardware_name"": ""11.6 catalyst driver"",
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    ""hardware_is_owned"": false
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    ""hardware_name"": ""11.8 catalyst driver"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""11.3 catalyst driver"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Phoenix"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGMiner"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""BES"",
    ""hardware_is_owned"": false
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]"
11799,"Date: 2012-02
Topic: Cannot remote to Linuxcoin
### Original post:
If I start the Linuxcoin box with a monitor connected, I am able to remote to this box via realVNC. However if I start it with no monitor, no keyboard or mouse, then realVNC can't connect to it. The miners seem to work fine though. Any idea? Thanks in advance.

### Reply 1:
You could SSH into it assuming your on a LAN. As for realVNC I dono.

### Reply 2:
thank you....SSH works...great.

","[
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  },
  {
    ""hardware_name"": ""keyboard"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""mouse"",
    ""hardware_is_owned"": false
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]"
13622,"Date: 2019-08
Topic: Antminer Hack S15 / S17 SSH and so on for free
### Original post:
Do you know the pinout for the ftdi to connect it to the miner? or would any console cable work?<link>

### Reply 1:
I have everything but dont work, what is supposed to use as terminal to login, Putty or coolterm?We need to connect energy to the databoard or not?

### Reply 2:
Power the controller, no need for hashboards.This is a serial link, old fashioned method you may not be familiar with depending on your age, so use a serial terminal, not ssh client; forget putty.If you do it correctly you should get a prompt when you plug the cable and hit enter; probably login and password.

### Reply 3:
Putty can use serial terminal too, but i use coolterm and i cant get nothing.Why there is no connections scheme, can someone put some pictures of the connections scheme?

### Reply 4:
Why? Did you made the cable yourself? Just search online for FTDI usb cable pinout... I believe it involves a chip, due to usb, unless you want to make a direct rj45 to serial which i happen to have one lol. Cisco switches and such use them in both the true serial and usb variants that go into an rj45 jack and serial/usb on the other side. Oh, if you are using a true serial port, make sure its enabled in the bios. Some bios are set to ""auto"" and won't turn it on if nothing is plugged at boot.I haven't touched putty in over a decade, but if it can do true serial then its a matter of picking the right port and speed parameters (115kbps 8,n,1).If unsure test the program with something else if you have anything that still connects via serial (such as the aforementioned router, or an old fashioned pc).

### Reply 5:
For the exploit, I searched and tried the few exploits on exploit-db. I haven't found anything thats a windowns script. The others didin't seem to work (were for older versions than lig<link> 1.4.32, which is whats on the newest firmware.) Has anyone else had more luck?Thanks

### Reply 6:
I bought one already cable in Amazon from USB to RJ45, but like i told you nothing works.The connections are in the RJ45 or in the boards points like old JTAGs ?

### Reply 7:
Both apparently. I did saw the 3 pin header on S9s, but this may vary with controller model/revision.

### Reply 8:
see the first post (edited today)!

### Reply 9:
Both? If both where is diagram for board connections?This post seems a joke!This sounds like one enigma, why dont do this like if this was for very stupid people?Put some pictures of connections, or a video in youtube, why not?

### Reply 10:
Why? Have you never done serial? You just need 3 wires: TXD RXD and GND which corresponds to pins 2, 3 and 5 in a standard db-9 plug. You might need to swap TXD and RXD if you got it wrong. Don't ask me about usb because that's a whole new can of worms.To clarify in case you somehow got it wrong: You can use either port, the rj45 or the 3 pin header for serial communications. ""Both"" should work... Using an rj45 for serial communications is old. The port knows when you plug this type of cable instead of Ethernet in devices with serial, there is nothing special about this. But in addition there happens to be a 3 pin header that appears to be the same. Just ignore the 3 pin header if you don't get it.RJ-45 PinSignalDB-9 <truncated> could wire them all if you are bothered with hardware control, but my made by Cisco version cable didn't bother. I don't think they use it (cts/rts) anyway, or the data ready pins.

### Reply 11:
It works either through putty or cooltherm, problem i had was when prompted for login, i couldnt type anything, tho led light was blinking on controller when i tried.

### Reply 12:
That sounds like your terminal has the wrong echo configuration. I am not exactly sure how good something like putty is for serial communications as i have never ever tried it for that. Anyway whatever terminal you use, try to find out how to change the echo configuration so it shows the characters you are sending instead of waiting for remote to send them back.

### Reply 13:
Artemis, this is a post just to try to make Bitmain thinks there is solution?I ask this because the only guys that say they can open SSH they ask a lot of money in bitcoin and they say just work with >100 units and they dont give solutions for free!In this conditions i have the solution too, i can pass my BTC address to anybody that wants to pay!!!!Here we have ppl saying the pinout of FTDI needs to be connected to RJ45 port?!!!!!! I never saw that in all my life!I spoke with some guys that say there is special points in board to make the connections, here nobody prints pictures of a scheme or a link to youtube, so, this is real or just another myth?Have you already tried and worked or have any other guy here tried and worked that can post a real scheme with real pictures or youtube video?P.S,- There is some guys that are trying since the beginning of the year to get funds in bitcoin to pay to White Rabbit post solut<rest of thread truncated>
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    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""old fashioned pc"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""USB to RJ45 cable"",
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  },
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]"
4256,"Date: 2012-12
Topic: Trustworthy place to buy ASICS atm?
### Original post:
I would like to invest into some ASICs what's a good place to buy one right now?

### Reply 1:
Nowhere. ASIC doesn't exist in the hands of an end-user yet.

### Reply 2:
How's www.btcfpga.com? Good place to pre-orders?

### Reply 3:
The 3 main sources of preorders for ASICs have all proven themselves trustworthy with FPGA units. BFL, bASIC, and Avalon can all pretty much be preordered with full confidence that you will get your <truncated> I have my preorders in with BFL, as do a lot of other people, but any of those 3 will be fine.

### Reply 4:
With full confidence? Seriously?Anyway, here's the spectrum of what is shared publicly:- <link>

### Reply 5:
How could someone recommend buying ASIC now ..... Open your eyes; your buying vaporware at all the current vendors!? And you are the last in line; don't expect any profit. You'll get your ASIC right after al the others. Diff will be high then:/

### Reply 6:
You need to open your eyes and realize that the nature of mining IS asics. If he's not going to get ASICs, then he might as well stop BTC. You need to stop blatantly spamming FUD.

### Reply 7:
Why the hell do you recommend someone to buy vaporware?All ASIC manufacturers will (propably but who knows for shure?) deliver...ASICs may be the future of BTC; yes that's foreseeable.... But when, how, what, working, at expected performance value and so forth .... Please do not recommend newbies to buy into uncertain things.... What if everything goes south with ASIC? Best advice I can give is: Do not buy or invest into Bitcoin, unless you are 1k % certain and shure to loose everything you put in!Ps: ASICs (especially of a certain vendor) are kind of a religion at the moment.... Don't talk bad (etc) about them or a shitstorm will follow:)

### Reply 8:
Come on, there is more to BTC than mining...

### Reply 9:
Then what's the common approach for newbies to get into BTC? Mining .... Right? (So it was for me at first, how else could I get BTC?) I didn't say that there is nothing else then mining.

### Reply 10:
I bolded my original comment to emphasis that I was talking specifically about mining. Of course there are other aspects, but we're in the mining subforum, and he's asking about buying hardware to mine on. I should probably have reworded the second sentence to this: ""If he's not going to get ASICs, then he might as well not even mine.""Wait, you're saying not to invest in Bitcoin, or any ASIC manufacturers? Cuz either way, that is terrible advise, and really shows a lack of confidence in BTC (or BTC mining). The OP asked a question about where to buy ASICs, not your opinion about whether you should even be buying ASICs in the first place. I gave him the same advise I'd give anyone else. You turned OT and started spewing crap.

### Reply 11:
Read the rest of the sentence and it makes sense again ...As for my FUD spreading.... Might well be true that I wrote my own opinion about buying (investing) right now. I would find it usefull of someone would warn me of potential loss of BTC before I order... With full confidence...And yes as a clear thinking person I have my thoughts about the bitcoin market as is right now...that might even be a lack of ""full confidence""

### Reply 12:
IMO,mining is far from not being profitable,with GPU's yes,FPGA's so so for now.ASIC's will make money,when the diff hits its plateau,you will make as much as you do with GPU's at the moment.3gh now will be = to 30gh in the future,it will net you about the same income.My plan is to have about 250-300gh & should generate about 20 btc per week @ a network hashrate of 500TH.So,if you want to mine,start ordering your ASIC's now,I & many others are

### Reply 13:
^signed....

### Reply 14:
...and be one of those who will have to realise: ""oh my god! They didnt deliver on their promise! my 9GH/W are actually 0.3GH/W and instead of delivering 1TH in total its only about 2GH at all...""Really.. if you bought a new GPU, wouldnt you first check on real life benchmarks (in other words results of a device that exists?) wouldnt you check out other people's thoughts if you were to buy some expensive stuff? I never fail to be surprised how dumb people become when it comes to greed or the possibility of attending a gold rush. If and only IF those asic promises are somewhat legitimate anyone who puts himself in the queue now wont have any special bonus left.So just keep your money or invest it in BTC directly, but buying some non existent hardware? Might as well give ti to me for the promise to deliver you some sort of hardware that will hash, microwave your food and be a harddist with at least 10TB storage space for just $400*..Really... bitcoin never ceases to be interestering. Sometimes i regret not have studied social behaviour - this forum would be full of PhD Thesis about <truncated> 4 to 6 weeks

### Reply 15:
Personally I have spread betted. If you can get something from e<rest of thread truncated>
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16294,"Date: 2022-07
Topic: What is the advantages to mine in USA ?
### Original post:
Once more I would like to hear you guys opnion

### Reply 1:
Depends where you are in the country.There are a few mining facilities opening up in NY.1) Cheap(ish) empty data centers. As has been discussed somewhere else on the board big corps are always chasing the 'next big thing' so a lot of fulling working data centers are empty now since they built a 'better' one right next door. The power and cooling and data infrastructure is already there.2) Upstate NY, where some of these DC are has a lot of cheap hydro power3) Cooler weather during the summer and cold weather during the winter help cooling vs other places4) Short trip to NYC where you have a lot of VC peopleTexas:1) Cheap power and the state has agreed to subsidize losses due to power issues.2) Same as NY, there are a lot of empty data centers as newer ones are built3) A lot of tax incentivesThose are the only 2 states I follow, I'm sure other people can chime in where they live / do business.-Dave

### Reply 2:
How much is the income TAX for miners ? how much electricity cost in NY

### Reply 3:
1) Depends on how you do things in terms of selling the coins and writing off costs and many other things. There is no simple answer. 2) Last I heard the hydro places were paying between $0.03 and $0.04 but that was 2020 & 21. No idea now. There seems to be a push against it in NY at the moment, will have to see how that plays out but for now <link>

### Reply 4:
Don't start a mining farm in 'Noo Yawk'. If you make a profit, they have a ridiculous income tax. They charge a ridiculous sales tax too. The power rate is much higher than 3-4 cents unless you sign a deal directly with a power plant. The publicly available rate at 1 MW is probably 5-6 cents in the west/central load zone. The state as a whole is unfriendly to the crypto industry. The only advantage will be the low temperature.I recommend finding a state which isn't a stereotypical mining state like WA/TX/NY, browsing through the utility tariff documents, and hopefully finding a place that offers ~5 cents without having too much competition from other miners. Don't choose a location which is too hot, like southern/west TX, AZ or NM. I've heard of a large farm located in NJ moving to OH this month, so you might want to consider that state as the weather is cooler.I can also give you a list of states where you can't find power for < 6 cents anywhere in the state: CA, NJ, FL, CT, MA, RI, PA, DE, MD, VA. Disregard these states entirely.

### Reply 5:
Sales TAXx and Income TAXhow does that works what is the calculation ?

### Reply 6:
Sales tax has nothing to do with mining.If you are only worried about power cost then for a large farm you are doing it wrong.If you can move into an empty DC or factory or other facility that already has all or at least most of the power / cooling / infrastructure you are already there.Because doing it properly can cost 10s of millions and take months.If you want to do it quick and dirty then yes you can move in just about anywhere with cheap power, then all you have to worry about is the infrastructure failing or not having stable power.-Dave

### Reply 7:
If you sell a used machine is consider a sale, righ?

### Reply 8:
maybe.but you need to determine its cost.that can be complex.

### Reply 9:
Sales tax/use tax absolutely is important because it means getting 5% to 9% less equipment for the same price. Same with import tariff or VAT. There are strategies to defer sales tax for up to a year, but it needs to be paid eventually. That's why it's worth considering zero sales tax states like MT/NH/OR as long as the power is cheap enough. If you're selling hashrate to customers in the U.S., that can be considered a taxable service in some states like Texas, while other states like Pennsylvania don't tax it.

### Reply 10:
You are talking about a few separate things.If you are running a business (that in theory is making money) in New York those items are tax exempt.If you are buying them to run for people then depending on how you do your service it may or may not have taxes in NYIf you are buying them to run for yourself but selling the hash to others then it's taxable.The above 3 lines can also be 100% wrong depending on how you setup your business and contracts and deal with other things.This is why tax lawyers and accountants charge so much.-Dave

### Reply 11:
It looks like you are correct when it comes to New York. Other states have similar exemptions for equipment used in producing products.

### Reply 12:
I suggest we get back to the topic. Are there any advantages of mining in the USA versus other countries? What country has the most <truncated> policy regarding taxes and benefits?

### Reply 13:
Economic freedom /property rights would be the main advantage. The government can't just confiscate the mining farm or Bitcoins as long as you follow the law. Banning cryptocurrency or mining is<rest of thread truncated>
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11095,"Date: 2022-01
Topic: GekkoScience 2Pac/Compac BM1384 Stickminer Offizieller Support-Thread
### Original post:
Hallo, ich habe einen Raspberry Zero WH mit 7 Ports RSHTECH USB 3.0 Hub. Raspbian Pi OS Lite 32 Bit. Alles luft normalCFLAGS=""-O2"" ./autogen.sh --enable-gekko Dann wird ""make -j 2"" mit einer Fehlermeldung geliefert. collect2: error:ld gab 1 Exit-Status zurck machen[2]: ?? [Makefile:893: cgminer] Fehler 1 makel21: <truncated> make1l: [Makefile: 1837: rein-rekursiver Fehler 1 makel1l: <truncated> machen: [Makefile: Und die Installation stoppt. Hat jemand eine Lsung?

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  },
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    ""hardware_name"": ""Raspbian Pi OS Lite 32 Bit"",
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16727,"Date: 2011-06
Topic: Solo mining yielding less than 50 BTC per block
### Original post:
Hey, I've been solo mining since June 12th. I copied the wallet on my mining server over to my laptop so I would be able to see when I solved a block. I managed to successfully solve a block for which I received 50 BTC. Later on I received a couple pending payments from BTC Guild. Since then I've managed to solve two more blocks, but for these I only received 0.36299659 BTC and 0.12603918, respectively.Does anyone know what's going on? Where are my bitcoins...?

### Reply 1:
If you really solved three blocks in 16 days, then your the luckiest solo miner around.

### Reply 2:
You received payments from a pool although you were 'solo' mining

### Reply 3:
BTC guild payments? Eligius, if it says generated. Some pools now split generated blocks to reduce fees.Also, try getting a nw copy of the wallet, and running -rescan... Just in case!

### Reply 4:
At 10Gh/s, not really.I started out with pooled mining. Had to switch to solo mining due to network bottlenecks slowing my miners down.Yeah, I mined with Eligius too for a while. Had half my miners on BTC Guild and the other half on Eligius. They're all definitely solo now.Maybe I will. Not too hopeful though. I checked the balance on the server directly and it matches the balance shown on my laptop. I really, really want those bitcoins to be recoverable. At the very least I want to know where they went!

### Reply 5:
Eligius is the reason - They pay with generation, so it shows up as if it's a block, except ypu only get a share of it, not the full 50. The reason you got it now is that tehy pay out on any amount after a week of inactivity.

### Reply 6:
Okay. That makes sense.Thanks!

### Reply 7:
so you solved 1 block only that eligius payment could also be one that you got when they changed their payout system a couple of days ago. they paid you one time even if less than 7 days have passed and amount < 1 btc. explains the two other ""generated msg"". I got one myself and was wondering too until i saw the info on the eligius website.

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14511,"Date: 2011-10
Topic: Average Mined $/BTC for miners
### Original post:
I want to provide a service that gives the bitcoin community an idea of the mining $/BTC average.It would be a report given every month that would delve in the world of mining and at the end give a good estimate of the average money the miner spends to generate bitcoins.One of the reasons I believe the price got so unreasonably high was so many investors neglected the importance of $/BTC mining costs.My goal is to successfully start a trend where BTC prices are almost always quoted with the average $/BTC mining costs.Compared to Silver and Gold, Bitcoin has a very unique relationship with mining operations.Before I do my first write up, I would like to bounce some of my ideas off the community and ask for help.I will be updating this thread.For starters, Here is what I would like to ask help with:1)Links to all the other similar posts - I know there's gotta be a half dozen of them; no need in re-inventing the wheel. [1 BTC bounty to the first post containing them all]2)The best rig for the buck without sacrificing too much quality. Damaged cards from a cheap Power supply or downtime because a cheep mother board should be taken into consideration. [Another 1 BTC bounty for the best <rest of post truncated>

### Reply 1:
Here is something that might help you: World-wide price for generating 1BTC Anyway, good luck with that. Just let me tell you that what you are proposing sounds unrealistic because 1) the $/BTC can't be calculated accurately and 2) speculators couldn't care less about that.

### Reply 2:
I knew there were people already a head of me on these thoughts. I didn't want to spend the time ""re-inventing the wheel"".Thanks for the Link.

### Reply 3:
On my systems according to my kill-a-watt and verified by my monthly bill on the smart grid I am on. It in all reality cost me under $1 to generate a btc. But that isnt the case on my earlier build or machines with non custom psus.You know what, screw it. I get 94% + off of my meanwell psus. First, Cablesareus says they have 48v 360s? is that an error or will that go boom? I got mine off ebay, and they run 2 5830s each and only add around 1.8-2.1 amps at a time to the current load. That alongside a 80+ bronze or silver and Im crunching away easy. (have a build that is running off a $30 (after rebate) 650w 80+ Antec Earthwatts with 2 of the meanwells each costing $22 each. ($30+(2x22)=$72 and will run 6 5830s on a msi890 gd65 (not a gd70) happily. Invest on a thrird $22 meanwell and you have a $96 100% independently powered rig that while I have only seen the 650+2 360w meanwell config at a verified 6.9amps to run it all, i assume you would run around close to 8amps for all the cards to run off the meanwells. Forgot one cost variable. You need to cut (or pull) the molexed adapter off the gpu 6pims and buy a medical grade (if your smart) tool replacement cable to hook it to the surge<rest of post truncated>

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    ""hardware_name"": ""meanwell psus"",
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  },
  {
    ""hardware_name"": ""Cablesareus 48v 360s"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""5830s"",
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  {
    ""hardware_name"": ""80+ bronze or silver"",
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    ""hardware_name"": ""Antec Earthwatts 650w 80+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""msi890 gd65"",
    ""hardware_is_owned"": true
  }
]"
20992,"Date: 2016-04
Topic: Beep - ant miner s3
### Original post:
Hey boys,when my s3 has been running for around 5 mins it starts beeping? any ideas why?thanks

### Reply 1:
Beeping usually means it lost internet connection. Check to see if it's still attached to the internet and can see the pool.

### Reply 2:
thanks will check

### Reply 3:
I don't think it ever connects to the internet in the first place. It takes a bit of time for a S3 to start beeping, even if it is completely disconnected.You might want to check it properly connects to the pool.

### Reply 4:
either a bad pool or no internet

","[
  {
    ""hardware_name"": ""S3"",
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]"
22238,"Date: 2018-01
Topic: Avalon6 will register as a worker, but will not mine
### Original post:
As the title states, I just bought an Avalon6, but I can't get it to mine. I have tried on both viabtc and nicehash. Both pools have recognized it as a worker, but it will not actively mine.Any thoughts?Thanks

### Reply 1:
Thought 1 would be you need to give us some more information to help you. Can you see anything on the miner status page? Have you looked into the system logs for problems?

### Reply 2:
Miner is idle..<link> And it looks like CGMiner does not see your A6. Restart CGMiner and see if that helps?If not, is the Controller plugged into the correct 4pin on the A6?

### Reply 3:
Ya I noticed that it was idleI have it plugged into the left slot (I have tried the right one also)I did also try to restart cgminer as wellpic of the back of the avalon6<link>

### Reply 4:
That's definitely where it goes...

### Reply 5:
On the left?

### Reply 6:
Yeah....And restarting CGMiner doesn't detect the miner? Can't hurt to power cycle the A6 also

### Reply 7:
I tried that also.

### Reply 8:
Anything showing in the kernel log on startup?the snippet you posted is just the Pi asking for an IPv6 address

### Reply 9:
So looking at your screenshot your RPi is not seeing the AUC adapter that goes inline between the RPi and the miner. Until you fix that part, your Avalon will never be seen.In the CGminer status page, just under the pools section you will see ""Avalon Devices"" This is where you should see your AUC adapter, if you do not see the adapter there, you have a cabling or an AUC problem.Which AUC controller do you have? The smaller shrink wrapped version or the one with the hard plastic outer shell? They react differently so it is important to know which one you have.

### Reply 10:
Here is the controller I have connected<link> I also tried this controller, but I can't even find it on my network.<link>

### Reply 11:
I also tried switching the cards around in the two controllers (they both came from parallel miner and are supposed to be setup for the avalon6)Just thought I'd see if maybe the controller was badStill having the same problem though...

### Reply 12:
@twistedbellyI have this same one..""Canaan by default set the PI with a static address at 192.168.0.100. "" So you need to set your laptop IP to 192.168.0.99, mask 255.255.255.0, gateway 192.168.0.100, then plug directly into the Pi. You should then be able to open a browser on your laptop and point it at <link> there""if reach you controllers web interface at <link> then on the General Setup tab, change the Protocol from Static address to DHCP client. Then click Save & Apply and wait 30 seconds. ""Now your Pi should be on your networkReference: <link>

### Reply 13:
Any news?

### Reply 14:
Here are some different shots of the setup (usernames/address deleted)Also, the avalon6 is only flashing a yellow lightLet me know if there is anything else I can send. Thanks for the help<link> Logs<link> LogCode:Tue Jan 16 09:07:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:09:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:10:00 2018 cron.info crond[427]: USER root pid 7145 cmd <truncated> Jan 16 09:11:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:13:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:15:00 2018 cron.info crond[427]: USER root pid 7183 cmd <truncated> Jan 16 09:15:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:17:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan: no addresses available Tue Jan 16 09:19:54 2018 daemon.warn odhcpd[410]: DHCPV6 SOLICIT IA_NA from <truncated> on br-lan:<rest of post truncated>

### Reply 15:
Actually, I talked with the company that sold it to me (parallel miner) and they pointed out that the bottom line on the config was missingThat was an easy enough fix, and now it's workingMore Options: <truncated>

### Reply 16:
Oooooooh! You have a Pi that is using the onboard SPI signaling to talk to the miner. Yes, you can do this, but it does require that line (and you can not daisy chain more miners on).Glad it's working.

### Reply 17:
Good to know!!

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22690,"Date: 2018-07
Topic: S9s running warm?
### Original post:
Spent some time today checking temps on my miners (easily done with Awesome Miner by just sorting on the Status tab). Anyhow, out of ~120 S9s I found 5 that were running hotter than the others. Most had reported chip temps in the 60s-70s. These 5 were 80+.My first step was to do what I thought was the obvious thing: tear them down and blow them out. That actually helped 3 of them. The other 2 continued to run warmer than expected.Opened up the web gui on each and discovered both had one fan only running around 2000-2600 RPM. Swapped the fans out (with spares I had previously purchased from Bitmain), and goodness returned.Learning for today: Just because it boots and passes the BIOS fan test, doesn't mean those fans are running correctly!Oh, for the record: I started down this journey today because Awesome Miner alerted me that one of the miners hit 96C. Nice to be notified. Not good that a miner was running at that temp. I should also note the intake air temp is 90F (32C) right now.

","[
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    ""hardware_name"": ""Awesome Miner"",
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  },
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    ""hardware_name"": ""fans"",
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  }
]"
11729,"Date: 2012-01
Topic: COMPLETED: Request for an RPC capable fork of cgminer (155 BTC pledged and paid)
### Original post:
For those of us with hashing farms there is interest in taking the existing cgminer (best miner platform bar none) and adding RPC support. This would enable the development of a variety of monitoring & management front ends (console, web or smartphone for example).To establish a baseline for the project I have come up with some general conditions for a bounty. These conditions aren't set in stone and I am willing to modify them if others (who pledge) see need for changes to the conditions. This is just an attempt to jump-start a project. If any developer sees an issue with the constraints please indicate in the thread.I am willing to pledge 30 BTC towards either integrating the following features into a future version of cgminer or developing a fork of cgminer project which will be ""rpc only"". Given the amount of new code and the amount of existing cgminer code which would be no longer needed a fork may be the best route however I would leave that up to any potential developers.The executable:* A daemon which is started by config file.* No command line output necessary or desired (although may be useful for troubleshooting)* Responds to RPCs. Although I am not a huge fan or JSON RP<rest of post truncated>

### Reply 1:
So I realized it was going to be way too much work to write a full <truncated> center for cgminer.Instead I am just going to write a simple plugin for Zabbix and let it handle all the graphs and what-not.Also, this works quite well.Code:echo ""version|"" | nc ip.addr.of.miner 4028

### Reply 2:
Hmm, I didn't know about nc.Ah the joy of simple sockets

### Reply 3:
If you never heard of netcat, you'll be glad to learn about cryptcat Kano.Cryptcat uses Bruce Schneier's Twofish encryption algorithm to secure the connection. Sweet.If you forget to provide a passphrase, the hard-coded default is ""metallica"". How can one NOT love open source software?

","[
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]"
10882,"Date: 2020-05
Topic: Inside APW9 (T17 / S17)
### Original post:
Hi all, i want try to mod fan APW9 for reduce the noise, i thinks is very easy, just make resistor on positive wire on each fan , just monitoring temp to not going over ! lolJust for fun, i share here a picture !

### Reply 1:
I like the idea, the fans on the APW9 PSU are indeed a bit noisy with that whining noise, I set the miner fans at 90% almost all year long so that surpasses the noise coming from the PSU so I never really bothered, but I am sure others will find it useful, are you actually trying to force the PSU fans to run at lower RPMs?And since we are at it, I am interested in knowing the fan dimensions of those APW9, I know APW3 and APW7 have a fan size of 6cm x 6cm x 2.5cm but from the look at it seems like the once on APW9 has a different size.

### Reply 2:
Hum ... i don't take real size, but i thinks the APW9 fans is 40x40mm and i thinks the speed is arround 10/12000rpm ! smaller than APW3 / APW7, and the APW9 fan is very lound :s, is arround same noise than 120mm fan at full speed ! very bad !So, i need to improve this :pFor this mod, i go to slow ! is my better machine !!! i don't need to broken this lol (T17)

### Reply 3:
If you manage and have the time, post a decibel reading from the PSU fans before and after. I am not sure from the picture, but can you start just the PSU for the test?Will keep watching as so far that sound is driving me crazy Thanks

### Reply 4:
Please tell us how this mod has progressed for you.

### Reply 5:
silly thought... can the PSU be left open, and the fans took out? to avoid overheating I am thinking of placing some 3 or 4 140mm arctic (pc) fans, way silent (2000rpm) to blow on the PSU?My question: Would the PSU start if no fans are present? ie fail-safe to avoid overheating? If yes, can the PSU power the other fans and 'tricked' into believing they run at the 'safe/recommended' speed of its original fans?I would not go through all the trouble, but this high pitch sound is a bit annoying

### Reply 6:
A good question. I dont have one on hand. With shelter in place I wont be driving to the main location any time soon.

### Reply 7:
Inside APW9, have 3 connector for this 3 fan... So, the psu don't read the fan speed ! each fan have only two wire, so no ""wire"" for tachymeter !I thinks, the psu have security for ""fan lost"", and i thinks only read intenssity at each fan, if on fan ""show"" no amper, so no power, the psu enter in security mode !IS NOT POSSIBLE left open the psu, the reason is simply, the way of air flow is totaly wronk ... but, i have inspected this, and, the top right and and the midle right is the most high temp zone ... but all psu need fresh air ...i thinks is possible make two fan 120mm on the left, and on litle more power on the top right All is purpose... at your hown risk, i don't tested this

### Reply 8:
Leaving it open could be useful for immersion cooling, but most likely you will end having to turn the miner 90 anyway for vertical flow.3 wire usually means it gets rpm reporting, just no speed control. Lets hope its the other way, and that third wire is just blindly controlling speed according to some inside sensor temp.

### Reply 9:
Do you have a photo of the label on the Vents?Would love to find their specs online (cfm, rpm, etc) especially CFM.

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    ""hardware_name"": ""140mm arctic (pc) fans"",
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3978,"Date: 2017-12
Topic: [Group buy - please read] 1000 pcs USB Erupters - EU/Int - price 0.89BTC -
### Original post:
Money is now sent etc :-) 9.89 btc for 11 eruptersCheers!

### Reply 1:
Got it

### Reply 2:
hey is it possible to add an extra one to the two i have already ordered ?i've just got a btc waiting for it...if you give me a green light i transfer you 0.89btc tonightwaiting for your answer..cheers and thanx for the great job you're doingzoob'

### Reply 3:
Everyone answered and first post updated, so that you know how much is left

### Reply 4:
payment for an additional unit done just right now !do i have to resign this transaction or the first one signed is ok ?cheers guys

### Reply 5:
Answered and updated

### Reply 6:
Everyone answered, good night. Saturday and Sunday I will be a little slower on answering, so just be patient, there are some erupters left, so if you need any, send a message

### Reply 7:
just sent payment of 5.40 enough for 6 more units ad to my other 2 paid for 8 in total hope i got it in time. thanks for all your hard work

### Reply 8:
hi therei'm sending you another 0.89 asapmy final order is for 4 units !have a nice day everybody

### Reply 9:
VDragon - please read PM

### Reply 10:
Everything updated and answered, see you in the afternoon

### Reply 11:
Ive just send 4.45BT for additional 5 USB miners. PM sentRegards,

### Reply 12:
payment for the 4th unit just sent !cya

### Reply 13:
Updated

### Reply 14:
+1 @0.89 for me

### Reply 15:
Updated

### Reply 16:
Answered and updated

### Reply 17:
26 to go, altough some might be reserved

### Reply 18:
please add 5 pcs to my order

### Reply 19:
Updated

### Reply 20:
Updated 20 left

### Reply 21:
Will take this 20. Will send the coins when you confirm they all are avalaible to me.Luke

### Reply 22:
pm sent

### Reply 23:
2.67 btc sent and pm with signed transaction info sent

### Reply 24:
ALL OUT! Last 20 pcs reserved for LukeFPS, waiting on payment.Theres 0 LEFT for new buyers, I am only waiting on Xer0, LukeFPS and one Anonymous for payment.

### Reply 25:
Success! Sold out

### Reply 26:
Payment <truncated>

### Reply 27:
Yay!We did it!When can we expect shipping costs?

### Reply 28:
Most likely Tuesday evening. We are still waiting on 2 payments, but if they dont go through till sometime tommorrow, we have to leave without them

### Reply 29:
Okay.

### Reply 30:
Have you already ordered them?

### Reply 31:
The amount is reserved for us, we are paying tommorrow and I am going for them on Tuesday, if all goes well. We are waiting on payment from 2 people till tommorow.

### Reply 32:
Will you be posting these out on the Tuesday then once people start paying the shipping costs?

### Reply 33:
Posting cant happen on Tuesday, its simply impossible, since I have to drive 2000km that day. I will send out the shipping costs over night and start sending on Wednesday

### Reply 34:
Good luck an be carefull!

### Reply 35:
Thanks

### Reply 36:
Only one user left to pay

### Reply 37:
AT THIS POINT THE GROUP BUY IS OFFICIALLY CLOSED. Payments will only be accepted from people who are already on the list and from the few people that are waiting on gox etc... There might be some pieces left - read below, BUT FOR PEOPLE WHO DIDNT CONTACT ME BEFORE OR TALKED TO ME, PLEASE DONT TRANSFER BTC BEFORE YOU TALK TO METheres 0 LEFT for new buyers, I am only waiting one Anonymous (waiting on gox) for payment.***We had gapthemind lowering his order, its explained on page 4 in case you are wondering***I am organizing a group buy for 1000 ASICMINER ERUPTER USB miners. This group buy is supposed to be for Europe only, but seems I have to include some international buyers to get to the number (original idea was not to take other parts of the world). Erupters will be bought from yxt. I have talked to him, managed to get a good price of 0.89 BTC, which is about 65 euro (85 USD for those who like USD more) on this day (2013.7.12.). It does about 330 MHs which is the hashrate for an good 7850 card, that costs about 130 euro, and consumes about 50 times more power! So its basicly a chance for everyone to replace GPUs.Small comparison:AMD 7850 - 330 MHs, 110w, costs 100 eur from ebay (<rest of post truncated>

### Reply 38:
check your tires pressure befor you leave for the long drive i don't want you to break down on the way lol!

### Reply 39:
nice car do you watch top gear?

### Reply 40:
haha now i know why you want to pick up personally..german Autobahn... have fun

### Reply 41:
It wont break down, its an Audi a4 station wagon . The only thing I am waiting for now is for my stupid wallet to sync, I forgot that it takes ages ...

### Reply 42:
Made a mistake, its an a4, as you all know from before, I am mercedes coupe fan, so cant really tell audis apart they look all the same to me. Its not something fast, its a diesel

### Reply 43:
Hehe, we life 5 minutes of the border from Germany, and my dad works at a car dealer.He sells Kia's and gets<rest of thread truncated>
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    ""hardware_name"": ""Audi A4 station wagon"",
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23428,"Date: 2021-02
Topic: XINSHILI Q3 30T firmware
### Original post:
Hey guys,I bought a couple of the above miners and looking for the newest firmware. Can't find ANYTHING via google unfortunately This is the manufacturer's site: <link> reply from them, webpage has nothing hopefully somebody can help!thanks

### Reply 1:
Isn't it on the product web page here <link> If you use chrome you can translate both the product page and the download page, which needs the extraction code above.Just tried it and it works fine. Weird process but seems to work ok.

### Reply 2:
thanks so much!I wasn't able to download from the page but I just copy and pasted the ZIP filename in google and an archive popped up.<link> you speak chinese by any chance? I'm trying to find out more info regarding the miners. There's a Q3 and Q3P - I have a couple of either but can't find the difference lolthanks!

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    ""hardware_name"": ""Q3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Q3P"",
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10653,"Date: 2017-11
Topic: What is everyone using other than dps-200?
### Original post:
With them being so damn hard to find? what is everyone using now?I preferred them due to my being able to select silent fans. Most of the server psu I see which support 2k+ are screamers?What else is out there for a fair priced server grade psu/board combo?

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]"
12069,"Date: 2012-10
Topic: CGminer v2.8.1 on Broadcom based DD-WRT / OpenWRT
### Original post:
Upped to 2.8.1<link>

### Reply 1:
coolness and a little something something

### Reply 2:
Why thank you very much indeed

### Reply 3:
P_Shep, thanks for doing this!What are you doing for a compile env? are you actually compiling on your openWRT box, or did you build an Env on a i386/x64 machine? If the later, any links/guidance to doing the same?

### Reply 4:
Cross-compiling. Links to dev env is at the bottom of the readme.

### Reply 5:
Thanks, will read up.. Managed to brick a wrt610n trying to get openWRT running.. time for jtag.

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    ""hardware_name"": ""wrt610n"",
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]"
23961,"Date: 2022-05
Topic: I've built a high-quality immersion setup, but too afraid to buy an S19J PRO.
### Original post:
Here's my setup:- 22x24 wood stove heat exchanger <link> 40 LPM 1/24hp March pump (ignore the pump in the picture, it has been replaced with this) <link> CPVC hardware-metal tank with two champers and flowplate- Shell Diala s4 ZX-i dialectic fluidI got a T17 40T for testing, and I can't say I'm happy with the temp readings. It's currently hashing at 36T dawing 1.9Kw.Temperature readings are as follows:- max chip: 85C- PCB: 60C- Fluid: 45C- Ambient: 32C (89F)My ambient in other rooms is no more than 24C (75F). Could the reason be the unshrouded fan? Because I can feel warm air coming out of the sides of the fan. I opened the window next to with to try to get the hot air out, but it always has been in the 30-32C range.Setup picture here : <link> dahsboard: <link> asked around and it seems people are complaining about T17s temp sensors being excessively high either air or immersed. Am I correct to assume an S19 would do better with this setup?

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    ""hardware_name"": ""S19J PRO"",
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23112,"Date: 2019-10
Topic: T9+ says ""Chain[J4] has 0 asic""
### Original post:
Hi friendsOne of the hashboard dosent work.I tried:Replace with other chainFactory resetflash with micro sdUse other chainUse other data cableUse other psuEven tried flash HEX with pickit from other working hashboardI also tried to clean the hashboard.any other thing i can try ?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000<rest of post truncated>

### Reply 1:
Add this from DaveF post.First, if you have multi tester check the terminal of the hashboard(The 0 ASIC one) if it shorted or not.Check the hashboard carefully if there are burnt parts if you found one you need to replace it.Also, check some missing parts just use and check the working hashboard as reference. Last thing is to check the capacitor if it is bloated you need to replace it with the same value.If you don't want to repair the hashboard on your own hire, someone, to do that or replace it with a new one.

### Reply 2:
What kind of damage is going to be seen underneath the heat-sinks ? the simple answer is non !you see a chip is not a fuse that will blow and you can know it's damaged using only bear eyes, if he wants to test for a damage chip ( which probably is the reason for this chain to show 0 asic) he can measure resistance and voltage for each chip without having to remove any heat-sink.usually when a hashing board shows 0 asics it indicates a bad chip, most likely the first or last chip , very seldom a chip in between, or a power module, I am not sure about T9 but in S9 the power module (MOS) is made of 4 integrated circuits sitting next to each other, 2 at the top and 2 at the bottom, those are very likely to blow and show you 0 asic.to troubleshoot and fix any of these issues, you need the right skills and tools, if you don't have those before hand then it's a waste of time to buy all those stuff just to fix a single board on a ""useless"" gear like T9+.That's 100% correct, in fact I just saw someone selling a bunch of T9+s for 100-120$ with PSUs in china, with a little bit more digging i am sure you can find them for less than 100$ , but if you were to look for the hash board only, you mi<rest of post truncated>

### Reply 3:
Since you already did the standard diagnostics (cable / PS / reset)And you also reprogrammed, I am going to have to say the next step is going to be checking the voltages at the regulators.Also, if you want to pull off the heat-sinks you can check for damage.Depending on where you are located, the cost of power, and a bunch of other things it's probably not worth buying a replacement board.But that's just my opinion.-Dave

### Reply 4:
Thanks guys.I don't think i have the skills for above <truncated> its always nice to learn so i will try those.

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    ""hardware_is_owned"": true
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    ""hardware_name"": ""chain"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""data cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""micro sd"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""multi tester"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""capacitor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heat-sinks"",
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  },
  {
    ""hardware_name"": ""power module"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": false
  }
]"
23501,"Date: 2021-03
Topic: Whatsminer m21s SSH
### Original post:
Hi everyone,I have micrtobit whatsminer m21s, Is there any way to access SSH?I have found an Image of firmware that access to SSH but not root access and just login with admin-admin and it has not root privileges to edit config files.I have try root-root, root-blank but nothing work.I will glad to here about the problem from you.Regards

### Reply 1:
The root user and password might be different if the root root doesn't work the only thing that I think to change it back to default is by flashing it through an SD card to reset it back to factory default.You can find the firmware of this miner from here <link> you flash through the SD card try to access the SSH again and use root/root or root/admin

### Reply 2:
Thanks BitMaxzBut in microbit site the latest version of firmware exist and in that version the SSH has been closed.Do you know the version that has SSH access?Or Do you know how can I enable the SSH access?

### Reply 3:
I don't know which version has enabled SSH access but since the firmware from microBT is SSH disabled try to use the oldest firmware listed from this link below.- <link> make sure to check the control board model first of your miner so that you can flash with the right firmware.

","[
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    ""hardware_name"": ""SD card"",
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]"
10189,"Date: 2017-03
Topic: SilverStone FHP141-VF on S5
### Original post:
I've just tried the brand new SilverStone as a more powerful replacement for my (already) powerful Twister Storm from Enermax. The fan install went well, albeit a bit tight on the frame as a 140mm - for information it's a snug 4-pin PWM. Then sometime after the boot sequence, I'm going the dreaded bip and the RPM drop as well as hashing. I can't understand as the new fan being more powerful by a good +20 CFM with superior static pressure. I'm not planning to use them on S5 but on my forthcoming S7 and I'm concern that it will not work properly on the new unit.

","[
  {
    ""hardware_name"": ""SilverStone"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Twister Storm from Enermax"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  }
]"
14270,"Date: 2011-06
Topic: HELP is my macbook pro completely obsolete for mining?
### Original post:
Snow Leopard 10.6.74GB of DDR3 RAMNVIDIA GeForce 320MI'm using my CPU right now, only getting .14 mhash / s or 1400 khash / s...is there any way to get more out of this machine?

### Reply 1:
I would say forget it, the hardware is so slow on this for such task. I know I own almost the same setup.

### Reply 2:
if you managed to mine on the video card you could pull an amazing 6 megahashes/sek or something....which means you would only waste electricity because you need about 100 macbooks to generate the power of one 5970 which costs 600 bucks.

### Reply 3:
I have an old desktop with 4 gigs of ddr2 and an nvidia geforce 9600 GT, would it be worth it then?

### Reply 4:
nope. you would still waste more money on energy - nvidia cardes are ineffective for mining, buy ati and win.

### Reply 5:
Its not obsolete for mining! Hide in the bushes and whack the UPS driver over the head with it when he's delivering a NewEgg box to your neighbor with 6990s in it!

### Reply 6:
a 6990 is bigger than my laptop and probably uses 3x more energy

### Reply 7:
lol gotcha, yeah its weird how only the ATi cards are good for it, who knows maybe Nakamote is really the CEO of ATi lol

### Reply 8:
yeah he's in cahoots with all the world's governments to create an overabundance of high performance computers by making people buy all these mining rigs then they'll all ban bitcoins and we'll be left with a lot of computers we don't need so everyone will try to sell theirs but everyone else is going to try to sell them so the prices will go way down so even really poor people will have supercomputers.

","[
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    ""hardware_name"": ""MacBook Pro with NVIDIA GeForce 320M"",
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    ""hardware_name"": ""5970"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Desktop with NVIDIA GeForce 9600 GT"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ATI cards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""6990s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""6990"",
    ""hardware_is_owned"": false
  }
]"
14366,"Date: 2011-06
Topic: Switching from Windows to Linux with single GPU (6970) worth it?
### Original post:
I'd like to know if I'd get more Mhashes/s on Linux and if yes which distributon + miner?

### Reply 1:
Meh, idk, Linux is just way easier for me. No dummy plugs or anything.

### Reply 2:
Most likely you will notice little to no difference. Even if you gain a few mh/s, you're likely to have lost more profit during the downtime while installing a Linux OS and a miner than you're going to earn from the extra mh/s.

### Reply 3:
That's what I thought. I'd have to switch in the mornings before I leave home to Linux.

### Reply 4:
In Linux, you cannot easily overclock the GPU core above BIOS limits. Using MSI Afterburner in Windows, its a click of mouse.

### Reply 5:
Fortunately, with the Catalyst 11.6, you can overclock beyond the BIOS limits under Linux now.

### Reply 6:
What? Is this true?

### Reply 7:
never touch a running system...you wont get more mhash

### Reply 8:
idk I just do thisCode:aticonfig --adapter=all --od-setclocks 1337,900it gets really hot. so you might need some risers.

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    ""hardware_name"": ""GPU (6970)"",
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  {
    ""hardware_name"": ""MSI Afterburner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Catalyst 11.6"",
    ""hardware_is_owned"": false
  }
]"
11163,"Date: 2022-06
Topic: https://canaan.io/
### Original post:
is this site legitimate? Has anyone purchased from them before? just wondering what people have to say about this site. I plan to buy alot of machines from them on the 30th so trying to make sure every thing is ok before I do. also does anyone know if they crypto only ? they dont seem to mention payment methods.

### Reply 1:
It is the official web site for Canaan Creative, who manufactures <truncated> is legit.They take BTC payment for small orders and for big scale orders bank transfer or BTC payment.

### Reply 2:
<link>Yeah, that's where to buy an Avalon. I don't know why these high-tech companies have such shitty-looking web sites. I guess they're all about efficiency.

### Reply 3:
There is a long thread that has huge info on the website .Avalon a7 announced Is the thread titleThey take btc for payment

### Reply 4:
Definitely legit, just dont get butthurt if they take a while to respond to your emails or give you a payment address if you choose to pay with BTC. Their support staff is limited, but they put in an honest effort to move everything as quickly as possible.

### Reply 5:
<truncated> stay away if you want to get an answer to a support ticket.Over 10 days it takes them to reply.10 DAYS

### Reply 6:
think he is a troll if you were robbed in july why wait until mid September to open an account here to complain

### Reply 7:
I'm sorry to hear you've had issues with them. But the thread mentioned by phillipma1957, has tons of info accounts of people receiving their gear, sometimes after a long process. I do know a few pages back inthat thread there is an e-mail address for one of their agents Steven,If you can provide him your order # and proof of payment, I'm sure he'll sort you out.The distributor seems entirely legit, more info will post I'm sure as they are supposed to ship out first orders next week.

### Reply 8:
the user baldhead94 has been blacklisted, and cannot post anymore.I'm not a troll, what else could I do, beeing without answer since two month.I've finaly received a mail from Lily Han, they couldn't find the record of my transfert, maybe because the amount received is not the amount sent , the bank putted the fee to the receiver by mistake, or because as it came from a joint count, my name and firstname didn't appeared .I've confirmation from various people that this is not a scam ... they are just overcrowedIf you can reactivate my previous acccount I will edit my postSylvain

### Reply 9:
I've sent them money the 19th of july 2017, and .... nothing.I've been opening tickets, they kindly answered but nothing.So , more than two month later, I'm sure that canaan.io is not legits, and so must be minerwarez.comBe carfull !edit 19/09/2017 : I've got finaly an answer of Lily Han of canaan.io, a mistake of my bank about the fees of transfert, my name not figuring of the transfert and a lot of work cause this

### Reply 10:
I have done several orders with Canaan and they went well just slow like many people have said. I have noticed that with most things they respond better to compliments, patience, and respect than bad actors. Remember this is a Chinese firm and respect is gold. Their people are not making tons of money and are doing honest work. I am pretty embarrassed by the way we treat these people. For what it is worth I have had great luck with their hardware and their staff.

### Reply 11:
It's me again, my avalon 741 has been received few weeks ago and is at work !Just because of few grain of sand (bank mistake, name mismatch) everything went wrong for me.Many thanks to steven and his team - Lily and Jasmine particulary - to have solved my issue.Sylvain.

### Reply 12:
Glad to hear everything worked out for you.

### Reply 13:
Canaan generated a record $167.5 million in revenue in the second quarter of 2021, which was the highest quarterly sales volume in the company's history.

### Reply 14:
Considering they are one of the few makers of miners that generally have been able to get ASIC chips not at all surprised they are having excellent sales of miners.

### Reply 15:
Canaan publishes the next financial report for Q4 and the whole of 2021, according to which revenue for Q4 2021 amounted to $342.8 million, which is 67% higher than the previous reporting period. In Q4, Canaan has implemented devices whose total computing power is estimated at 7.7 million TH/s, and for the whole of 2021 22.3 million TH/s. Revenue for 2021 reached $785.5 million (for 2020 it was $447.7 million)Source: <link>

### Reply 16:
Dear allCanaan Official Online Shop here <link> latest Avalon Miners Are Available Now!100% orginal from Canaan factory.

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11227,"Date: 2022-11
Topic: Well some more bad news. Bitmain is not giving out promised coupons.
### Original post:
I purchased gear on Sept 22. It was supposed to be shipped in Oct and a coupon was supposed to be issued for 30% off my next purchase.Dealing with Lisa from bitmain and she simply refuses to acknowledge that I am due the promised 30% coupon.email chain is leading to <truncated> 14, 2022, 10:43 GMT+8Maybe I am not clear enough. The 30% coupon is to be used on a future order. Not the order I paid for but for one in the future. Why would your company say you are giving a 30% off coupon for a future order and then not give it. It makes you lose the next sale. I have been buying from you since 2013. You never failed to issue a promised coupon for a future order. So now you are going to fail to send me a simple 30% off coupon for my future purchase? Seems to be a really poor way to get me to ever buy from you any <truncated> 14, 2022, 10:38 GMT+8Listen to me very carefully you advertised the s19j in September that you would ship it in 1 month and that 30 days after you shipped it you would issue a 30% coupon. this was on your website.I did this purchase. Because your website said you would send a 30% coupon. 30 days after the shipping date. And now you are denying me the coupon. I have p<rest of post truncated>

### Reply 1:
After spending a long time trying to find some info I managed to get a dead link.bing it and show enough info that the offer did exist.here is the link on a bing searchthe link does not openStill hoping to get this coupon.

### Reply 2:
I think that this is the ""proof"" you need:<link> that page you've found, as archived in 4 October.Best of luck!

### Reply 3:
Well sent it out and hope to get a positive result from them.Thank you.

### Reply 4:
Looking at the archived link the Nfish posted above, they mention thisSo it seems like they only give coupons to those who have already bought any of the Pro versions at a higher price before the drop to 19$/th, are you eligible?The next point is thisDid you sign the delivery confirmation? These rules are new, they used to give out coupons without all these conditions, it's terrible of them to hide all these terms under a bold statement that saysBitmain folks are doing what Bitmain folks do.

### Reply 5:
I read it multiple times and I think they are not going to honor me with my coupon.So If so I won't be buying any gear for a while.

### Reply 6:
Well yeah especially since I am not getting any coupon.

### Reply 7:
I saw someone sell the same model (S19 pro 100th) in the U.S for $1900, isn't that nearly the same as buying it directly from Bitmain even with the coupon discount you may get? I think these guys were given coupons so they managed to grab the gears for cheap, and the possibility they did the tax trick by declaring low amount, I don't know about you but if I had gears that sell locally at $1900 or even $2000 I would rather buy it than going through Bitmain.

### Reply 8:
I could also see the promotion on Google but after clicking it it seems they remove it. It looks like a falls promotion or maybe they have limited coupons available.They thought they could get a way. Let's see if they still giving out the coupon.

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11500,"Date: 2011-07
Topic: Using poclbm With The phatk Kernel
### Original post:
I have had a lot of trouble with phoenix. The biggest issue being that it oftens gets stuck on ""[0 Khash/sec] blah blah"" and never reconnects to the server. This is especially bad when I have torrents running, even when I limit torrent traffic. The only reason I put up with it is because phoenix supports the phatk kernel, which gets me an extra 20MH/s per card.Well, I got tired of it, so I forked poclbm and hacked it to support phatk. Here's my fork:<link> far so good, poclbm is happily running without any issues whereas my phoenix instances are freezing up MH/s is about the same. 339 MH/s instead of the 340 MH/s I get on phoenix. Close enough.Lemme know if this helps anyone else.

### Reply 1:
sweet, will testdrive it

### Reply 2:
Thanks so much, I have the very same issue with phoenix getting stuck and making me lose hours of mining (even running several copies for each gpu is not enough since all one of them can hang if left running long enough).I'm going to test this right now.spiccioli.

### Reply 3:
Let me know if it works okay. I've been running it since I posted and so far none of the instances have failed. However I haven't measured stale share ratio yet; I was getting 0.1% with the old version of phoenix I had which was very nice.

### Reply 4:
Super noobie question here... How do I make this work? Do I just drag and drop to the poclbm folder? Because am seeing no difference when I drag and drop the phatk files...

### Reply 5:
This is interesting and yeah, how do we make this work? A simple guide maybe? Thanks!

### Reply 6:
Sadly it causes a kernel trap after a few minutes of work, I'm using it onto a LinuxCoin pc with two 5850s which has been working ok with phoenix (apart from the hang problem) for more than three weeks.And when it traps I have to power-cycle the pc. best regards.spiccioli.

### Reply 7:
I'm already thinking of killing + restarting phoenix every 10 minutes... would loose me less time than it already has with these lockups!

### Reply 8:
Works great for me. I actually had the same idea a few days ago, but was too lazy to actually look into it.Hashrate is about the same. (Maybe only 283mhash/s instead of 284mhash/s.)It's also possible to clone fpgaminer's poclbm-phatk git repo, then merge luke-jr's branch for better console output into it. There's 1 conflict that can easily be solved by using luke-jr's version of the code.edit: What I actually wanted to say is: ""[..]merge luke-jr's branch for better connectivity issues handling into it."". Sure, it has better console output, but that was not the reason why I merged his branch. Link is here: <link>

### Reply 9:
Yay!Thank you for checking that! I was going to look into luke-jr's branch as well, so I could get a good figure on the # of stales I'm getting. Since you've confirmed the merge is simple, I'll try doing that soon.Woah, weird. Have you ever run poclbm on that machine before?Linux or Windows?On Linux you just:Code:git clone <truncated> fpgaminer-poclbmAnd then use it like a regular version of poclbm.For Windows ... well ... I'd have to get PyOpenCL and stuff up and running and see if I can package something together.

### Reply 10:
Merged in Luke-Jr's work on poclbm. I put it on a different branch in my fork: <link> to work just great

### Reply 11:
+1 for win version

### Reply 12:
Me too

### Reply 13:
Windows version please!

### Reply 14:
Alright, here's a stab in the dark for the Windows version:Binary: <link> <link> source archive includes the code, and a folder called ""win32"" which is what I used to build the EXE from using py2exe, in case you want to do it yourself or use the python code directly.Please note: This worked on my Windows 7 64-bit machine, but I only have an nVidia on here so I couldn't do a full test. I also don't have a ""clean"" Windows machine without Python and other installed dependencies on it, so I don't know if the above zip has all the dependencies packed in. Just let me know if it doesn't work VirusTotal Results:<link>

### Reply 15:
Ah, with Python 2.7 this looks better than Python 3.2 however it also seems to need the PyOpenCL module to run

### Reply 16:
Hi! I have it now up and running in windows7x64 (I downloaded the binary) and I have about the same hashrate on my 5850 (381 with <truncated> No 1 Mhash difference. Haven't had any stales yet. Will be monitoring for the next hours/days.I hope this gets integrated to the major GUI miners/frontend. This is just great! Thank you for your work!

### Reply 17:
Hi fpgaminer,poclbm does not work, it gives an error about access rights and I did not bother to look at it more deeply.I've made a few more tests with your work and it always freezes or traps after a few minutes of work. The longest run has been less than half an hour.So I decided to go back to phoenix.Best <truncated> I'm running a 2x5850s rig with linuxcoin 0.2a as operating system and I start two instances of po<rest of thread truncated>
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10365,"Date: 2017-07
Topic: [Guide] Dogie's Comprehensive Bitmain AntMiner S1 Setup [HD]
### Original post:
okay hopefully knows how do this on an s1 lol I am on cg miner version 4.3.2a what I am trying to do is get the API up and running on them to allow for a 3rd party software to control them etc a pool hopper..... <<<<<< I can get the api to send BUT not receiver any one have a clue how to get the api to receive on the s1 ants

### Reply 1:
May be edit with SSH do this <link> if that's what you mean i also put in that line so it balance mines for me --balance . and you can also add more pools there you can't Thu the UI but do show up in the pool list in the UI.Which from what I saw of the UI for the S3 its built so you won't have to edit, guess I'll find out in two weeks .I'm not sure what a real pool hopper is only because any Pool i mine at i usually set donation to like 3 to 5 % , i do just fine .

### Reply 2:
Any plans to update this guide (or create a new one) for the S1 upgrade kits?

### Reply 3:
If I can get one to the UK, yeah.

### Reply 4:
Was wondering. Would anyone be interested in water cooling the S1? I have a machine shop and I have a few S1 units. Was thinking about it. What do you all think?Jeff

### Reply 5:
BTW thank you very much for all the info in this thread. Made troubleshooting so much simpler.

### Reply 6:
There is only one connector type on the S1 boards, so it sounds like they replaced the fans.

### Reply 7:
I'm pretty sure they did. there's only 2 (a black and red) wires coming out of the fan which are directly connected to the pos/neg hookups that you had to wire the PSU to origionally.Unless you guys can suggest an inexpensive replacements fan I'll just deal with the noise. Not going to spend $50 replacing 2 fans that aren't broken.

### Reply 8:
I'd leave it unless it really bothers you, the fans will cost as much as the miner.

### Reply 9:
Yeah, they are quite loud always running full clip but I've bought them to test the waters of mining and plan on upgrading if I can ROI on the cost of buying the 2 S1s used.I like the C1s but have read about some issues with the pump

### Reply 10:
This guide isn't even good, do you even do any updates to it? I sold some S1's and gave this guide as a link to the buyer and the trouble starts right at the beginning with the wrong IP.Every S1 I have ever received (50) was set to 192.168.1.99 by default.

### Reply 11:
Its subjective, there's always going to be a small failure rate, but those pumps are so cheap you can literally buy 5-10 of them for the same price as one purchased locally and keep 4-9 as spares for the same money.

### Reply 12:
Delta Fans -- <truncated> I installed Delta Fans AFB1212HHE-4L15 Fan as the second fan on two Antminer S1 systems. These are 120mm x 120mm x 38mm fans drawing 0.70A at 12VDC and move ~130CFM. These are PWM fans with 4-wires and 4-pins. For more details, see Delta Fans website and look for AFB1212HHE-TP02 (same fan, 4-wires, no plug).I used M4x55mm screws to attach a safety guard and the fan to chassis. I used a nut between the fan and chassis to provide spacing between the fan blades and the chassis screw heads. I shaved two key strips off the plug to fit the fan header.The S1 manages the fan speed as appropriate, but only one fan speed is reported on the miner status page. Ambient air temperature is 70.5F (21.4C), and the S1 reports 42C/42C.I bought my fans through Amazon. See <link> (Delta Electronics AFB1212HHE-PWM 120x120x38 MM Cooling Fan, 2900 RPM, 130CFM, 47dBA, 12VDC, 3 and 4-pin TAC Output + PWM).

### Reply 13:
Or, set DHCP. It fixes 90% of problems like this.

### Reply 14:
Really?..

### Reply 15:
a 5 snook in there

### Reply 16:
Hey need some help i just got an S1 today i followed the guide but i cant find the miner on my network and changing my LAN to static on my laptop still wont work. The miner seems to power on properly i have the red light and green light on the control board are on as well as both LAN port indicator lights so i don't think the miner is dead i just cant find it on the network. Thanks for any help you guys!

### Reply 17:
Probably an ip address problem.Download ip scanner from <link> to find location of your S1 and take it from there .

### Reply 18:
Yep you were right! Im hashing @184Ghs sweet. Now its time for more. lol

### Reply 19:
That's good glad you got it working .

### Reply 20:
Dogie's Miner Setup Guides: ASICMiner Blade ASICMiner Cube ASICMiner Tube ASICMiner Prisma Avalon Avalon2 Avalon Avalon3 Avalon Avalon4 Avalon Avalon6 SpondooliesTech SP10 SpondooliesTech SP20 SpondooliesTech SP30 SpondooliesTech SP35 Technobit HEX16B Technobit HEX8A1 Technobit HEX4M Technobit 2HEX4M KNCMiner Saturn/Jupiter Bitmain AntMiner S1 Bitmain AntMiner S2 Bitmain AntMiner S3 Bitmain AntMiner S4 Bitmain AntMiner S4+ Bitmain AntMiner S5 Bitmain AntMiner S7 Bitmain AntMiner C1 Bitmain AntMiner U3 RockMiner R-Box RockMiner New R-Box RockMiner R3-Box RockMiner T1 HashCoins Apol<rest of thread truncated>
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  {
    ""hardware_name"": ""ASICMiner Tube"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICMiner Prisma"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SpondooliesTech SP10"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SpondooliesTech SP20"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SpondooliesTech SP30"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SpondooliesTech SP35"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Technobit HEX16B"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Technobit HEX8A1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Technobit HEX4M"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Technobit 2HEX4M"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""KNCMiner Saturn/Jupiter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S4+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner C1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain AntMiner U3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RockMiner R-Box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RockMiner New R-Box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RockMiner R3-Box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RockMiner T1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""HashCoins Apollo"",
    ""hardware_is_owned"": false
  }
]"
11272,"Date: 2023-03
Topic: S19xx vs Avalon 1246 vs Whatsminer M30S/M31S
### Original post:
Hi guys, ive been watching the forum for a while but just registered today, i own some scrypt miners and i am looking to buy my first BTC miner now.I am looking at the Bitmain S19 series, avalon 1246's and Whatsminer M30S/M31S.I have a hard time justifying paying that extra money for a S19 series and was pretty set on buying an avalon 1246 but then, i heard that reliability may not be that good on the Avalons and seems like they are more sensible to heat....That makes me wondering if the Whatsminers would be a good <truncated> rates where i live are at around 0.076 usd/kwSo what would you buy and why?Any feedback from actual owners of those machines would be appreciated.Thanks in advance!

### Reply 1:
I gave you a merit as you placed a well thought out question in a proper format in the right section.There are 4 sellers of etc basics that are decentAvalon <truncated> own some of every one above.I have to see bitmain tends to be able to run in the hotter rooms bestInnosilicon second bestavalon third bestwhatsminer fourth place.My sample size is 200 pieces of gear <truncated> yeah it is scrypt <truncated> has been able to run in the hottest rooms. We have heat issues when summer temps go above 95F or 38c our main mining room gets really fucking hotBitmain gear has had the best ability to run in really hot rooms.Now if you can keep the room temp controlled and keep good quality power avalon is very good.but if your mining space it rugged bitmain should be betternote we only have 1 s19 so The sample is smaller1066

### Reply 2:
Good feedback there!Happy to see that you would place the Avalon's in front of the whatsminer The 1246's seems a solid value to me if they are reliable...

### Reply 3:
So far not a fan of the Avalon 1246's.The hash rate, irrespective of pool is much lower compared to what it is supposed to do. On my 85THs, it gets a max of 80, usually running lower. The 83THS gets high 70's and close to 80. 1 machine keeps rebooting every 36-48 hours, and can't seem to find the issue. Machines were new, and been mining only a few months.The S19 110's have been performing well and above the advertised rate, and been sound since day 1.

### Reply 4:
I do not own any miners, but have been running a 2mw hosting facility the last 8 months and started with the company(and mining) 18 months ago. At my site we have about 600 machines currently. And host all of the above mentioned miners. 360 s19 series, about 100 avalon(1246 and 1166 pro), some L7, goldshells, and some what's miners m21-m30s++. The facility is non climate controlled with temps ranging from 10-102f. My experience has been most positive with s19 series, main failure being psu but also bad soldering on hashboards. I very always liked avalons(started with 1046 and now to 1246 and 1166pro). They're simple to work on and once you understand the kernel log typically pretty easy to figure out any issues.The site has about 40 what's miners. There has been 1 WM fail since we began hosting. They have by far been the most reliable. They also run the hottest by far. And due to the really low failure rate, that is the miner brand I have the least experience with lol. Really small sample size(40 out of 300 compared to 360/600 s19 series). Our company started a sister site that just got fully set up a few months back. 10mw. Running exclusively WM. Depending on where you live(weathe<rest of post truncated>

### Reply 5:
Nice first post.

### Reply 6:
Personal feeling or s19pro 110T is better, mainly stable.

","[
  {
    ""hardware_name"": ""scrypt miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain S19 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""avalon 1246"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer M30S/M31S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Whatsminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19 110"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""goldshells"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer M21-M30S++"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 1166 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 1046"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19pro 110T"",
    ""hardware_is_owned"": false
  }
]"
21583,"Date: 2017-09
Topic: 1300 Watt Power supply without breakout board
### Original post:
Hello Guys,I have a 1300 Watt Power supply, from a workstation, which is a little bit different to what i use normally ( evga 1300 watt user).Just 1 question. Will it work for one avalon 741?Here are the pics:<link> just kill switched the current connection to the mainboard via a cable.over the power cables i have power and the fans are running.But it is safe to run this? The next step would be soldering the <truncated> i cant test it now.But maybe someone has expierience with the delta dps-1300FB AThanks for your time

### Reply 1:
That should work for an Avalon 741 without issue. I have measured our 741s at 1150w draw from the plug so you are pushing the power supply around 85% of its rating. With a good server PSU there is actually more headroom so you should be just fine. Just remember you need to power it off of 220 to get the full rating out of it. It will not run the Avalon on 110 power.

### Reply 2:
You can also drop the avalon to -1 or -2 which would ease the psu a bit.

","[
  {
    ""hardware_name"": ""1300 Watt Power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""evga 1300 watt"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""avalon 741"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""delta dps-1300FB A"",
    ""hardware_is_owned"": false
  }
]"
14233,"Date: 2011-06
Topic: your thoughts on this mining/gaming rig - but mostly for mining to start
### Original post:
I was due for a PC upgrade at home and I always wanted to try to mine. My current PC must be 5+years old now. When I learned about bitcoin and desired to try it out CPU mining was on its way out.So there was really no way to get involved with mining except to play around with the software andread. Due to working at an ISP i can get free electricity while I am mining. I am allowed to have a personalbox on the network.So I decided to buy a new setup. I wanted to keep costs somewhat sane at first to mine and then onceI decided I was all done with mining switch things out to make it a gaming rig down the road. So some partsare a higher quality/performance compared to others.The parts I choose were:MSI 890FXA-GD70 motherboard - $195(seems nice. plenty of slots)Rosewill BRONZE Series RBR1000-M 1000W Continuous@40C, 80Plus Bronze Certified power supply - $130(I have always had good luck with Rosewill power supplies at home and work.)2 x MSI R6950-2PM2D2GD5 Radeon HD 6950 2GB - $280 each(I wanted reference models and I am pretty darn sure these are. Plus the extra ram will help down the roadwith gaming I imagine.)2 x Kingston 1GB 240-Pin DDR3 SDRAM DDR3 1066 - $13 each(just cheapo ram to g<rest of post truncated>

### Reply 1:
you dont need a new box if yours has pcie slots in it just get a gpu and slap it in ok as for the other stuff 1 mb you don't need a 200 mb to run just 2 cards you can find a $100 mb whit 2 slots or more like a 880g for $702 that psu is ok not the best but not the worst 3 good choice i run 3 of them unlocked 4 ram is fine for mining wont be worth a dam for gaming 5 ok for mining junk for any thing more6 waste of money it a slow ssd wont help whit any thing that much and its to litel gb to be of that much ues if it was me i would lose the ssd and get a cheep hdd and spend that 75 on ram or a beter cpu but that's only if you want to game on it. if not il still lose teh ssd and call it

### Reply 2:
>> you dont need a new box if yours has pcie slots in it just get a gpu and slap it in My old box is what it is. I really do not want to mess with it as I use it every dayand it is connected to my TV. Plus the wife uses it as much as I do when we get home.Nvidia GPU btw which got 28M/H. It is still stable and I might as well leave it that wayuntil I retire it.>> ok as for the other stuff >> 1 mb you don't need a 200 mb to run just 2 cards you can find a $100 mb whit 2 slots or more like a 880g for $70I always tend to invest a bit of money into my motherboards. I buy a good one and use it for manyyears. Eventually this motherboard will be the core for my gaming platform. I needed something new.Sure there are cheaper options but based on my research I will be happy with it.Plus if I decide to get into mining more based on the first results I see.. i can pimp out this MB with5 cards. Putting that many cards on to one MB lowers overall costs.>> 2 that psu is ok not the best but not the worst I agree with you.>> 3 good choice i run 3 of them unlocked Good for gaming, not the best bang for the buck for mining, but perform well for that duty also.>> 4 ram is fine for mining wont be worth <rest of post truncated>

### Reply 3:
I turned my mid-range gaming rig into a mining rig. I find it to be a better use of money, because if mining ever stops being profitable, you can continue to play awesome games and/or sell your hardware for profit. I think it's the best way to go if you don't want to invest a ton of time/money into mining. It's kinda risky to do so, in my opinion.

","[
  {
    ""hardware_name"": ""MSI 890FXA-GD70 motherboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Rosewill BRONZE Series RBR1000-M 1000W Continuous@40C, 80Plus Bronze Certified power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MSI R6950-2PM2D2GD5 Radeon HD 6950 2GB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Kingston 1GB 240-Pin DDR3 SDRAM DDR3 1066"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Nvidia GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""880g motherboard"",
    ""hardware_is_owned"": false
  }
]"
14474,"Date: 2011-08
Topic: Miners quitting en masse -- so it begins.
### Original post:
<link> seen a serious uptick in the number (and quantity) of farms/rigs/mining cards being sold on this forum.Especially in the last week or so -- pretty much since the last difficulty level.And, of course, there is no shortage of such cards on eBay, though I think many of those are put there by common, money-grubbing scalpers. Though there are certainly a percentage of ex-miners represented there.These guys are the vanguard -- the first guys in line to get out. Their logic goes like this:""Ok, so I spent $2500 on equipment. I've earned MOST of what I'm going to earn, so why not sell them NOW before the flood of cards hits the market, and my $2500 investment becomes worth much less.""While other people say, ""If you're making ANY money over the cost of electricity, even $5 a week with your 5 rigs running 24/7, keep mining, baby!""Instead of looking at just MINING INCOME and ELECTRICITY COSTS, why not factor in VALUE OF EQUIPMENT as well?After all, your mining cards are going to lose value every month, especially as difficulty goes up and more and more used cards hit the market. Then there's AMD's 7000 series, which will make gamers like our 6XXX and 5XXX cards even less. So you should <rest of post truncated>

### Reply 1:
All I hear is ""I'm quitting"" and ""Mining NO LONGER PROFITABLE"" yet the network hash rate keeps going up!This is probably BC all the miners who quit give their hardware to another miner, who keeps mining, thus the hardware just circulates, yet never leaves the network.I would also like to think that all the 6950s I bought may not be the best for mining in a Mhs/$ sense, but they're sure as hell the best for gaming at their price (the 1GB ones), at least according to the Toms Hardware charts. So once they're useless to the average miner, they'll still be worth a fair price for gamers, especially considering they're on more current architecture than the 5xxx radeons.

### Reply 2:
Actually, I don't believe the parent is trying to scare anyone away from mining. He is simply pointing out, and rightly so that depreciation costs represent a substantial cost over that of electricity for mining. Depreciation is hard to get right with mining though as even though we are seeing some of the lower end video gear being sold, (still not many 5970/6990), there is still a scarcity of good mining hardware.I think another factor though which encourages me personally to continue mining is that I would like to believe that bitcoin has a real chance to succeed as an internet currency. To that end, I would like to remain a part of that.

### Reply 3:
That one dude who selling all his 5870s and whatnot for too much bling on this forum got an offer from Angelius for his rig. Tells you something about which side of the mouth one talks out of. Yes people bailing on mining helps me out too, but I prefer to just be an honest injun about stuff. There is still money to be made mining. It's not a great time to buy in but it's not necessarily a death trap either. You need to be smart about how you invest and don't expect money to fall into your lap and give you a happy ending while it's at it. Easy peasy, didn't need 20 new threads to say that.Wrong, you haven't been around to see the OPs 5000000 other topics about OMG THE SKY IS FALLING YOU'RE GOING TO GET AIDS IF YOU MINE, etc.

### Reply 4:
FYI, I offered the guy $175 for his 5870 -- that was it.At this point, I can only afford to buy used cards when it's a good deal, since I don't want my payback period to be anything longer than 50 days. 50+ days is too great of an unknown.You should meditate on the wisdom: ""Fools rush in where angels fear to tread.""

### Reply 5:
blah blah blah, stop mining so the difficulty will go down for me, don't let the door hit you on the way outBetween the ""your dumb because you're paying too much for your 5830s"" and this, we know, you really want to scare people to quitAngelus wants to scare you into selling your rigs for 1 selfish reason:He wants to pick up your equipment for less than market price.Here's some evidence:This was just 3 days ago, low ball offer on 18 GPUs<link> he tries to justify his lowball offers with this:<link> another lowball offer for:<link> the first time he refers to miners as dumb kids:<link> for looking out for our best interests Angelus, I mean Dad.It's like telling us we'll go to hell for masturbating, when you have a stash of Playboys in your closet.You're just a hypocrite

### Reply 6:
The hash rate is still going up because some people are happy to earn $5 a day (after costs and tax) on $300 of equipment. That works just fine as long as difficulty doesn't keep increasing at the pace it has so far. The next increase is likely to be less, about 25%. Still, that's 25% less money than they're making today. Miners may also be betting on a higher exchange rate in the future, although prices have stagnated for weeks despite a more than 10<rest of thread truncated>
","[
  {
    ""hardware_name"": ""farms/rigs/mining cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6950s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5xxx radeons"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5970/6990"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5870s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5830s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""18 GPUs"",
    ""hardware_is_owned"": true
  }
]"
13958,"Date: 2011-05
Topic: Result didn't meet full difficulty, not sending
### Original post:
Ok, call me paranoid but I would like to ensure that this is expected behavior.I am mining to my local bitcoin application running with the -server flag with the phoenix miner. I have verbose on as you will see from the output;[08/05/2011 20:47:55] Result didn't meet full difficulty, not sending[08/05/2011 20:48:07] Result didn't meet full difficulty, not sending[08/05/2011 20:48:08] Server gave new work; passing to WorkQueue[291.65 Mhash/sec] [0 Accepted] [0 Rejected] [RPC]The 'Result didn't meet full difficulty, not sending' is making me nervous as I want to ensure that everything is actually working. I don't see the accepted raising as I do when I am connected to a pool and I don't to mine locally for weeks/months, only to find out that it wasnt working.Does anyone else see this and if so, have you won a block?thanks in advance.

### Reply 1:
This is working exactly as designed. The OpenCL kernel returns results that meet a difficulty of 1. (H == 0) Since you are solo mining the only results that will be sent to the server are the ones that meet the full difficulty. (like 109K at the moment)In your case ""accepted"" would mean that you found a full difficulty result and that your local bitcoin accepted it. You will see a LOT of these results not being sent before you get lucky and find a full difficulty one.

### Reply 2:
Ok, many thanks for your reply.So in other words , when I see the 'not sending' I can think of that as hashes that didn't solve the block? When I see one that is accepted that means that I solved the block and thus will get the reward?again, thanks for helping a newbe.

### Reply 3:
You can look at all of the ""not sending"" results as ""shares"" that didn't solve the block. It's expensive performance wise to have the OpenCL kernel check full difficulty. Since the number of difficulty 1 results is relatively small (one every 10 seconds or so on a fast 5870) it's easier to just check full difficulty on the CPU.Anytime you get an accepted it means you found the solution to a block. This doesn't guarantee that the block will be valid though, only that your bitcoin RPC server accepted it. In most cases this should mean a valid block though.

### Reply 4:
I got it. Thanks again for taking the time. A meager donation is coming your way. (don't have many yet....)

","[
  {
    ""hardware_name"": ""local bitcoin application"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""phoenix miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""OpenCL kernel"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": false
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]"
22013,"Date: 2017-12
Topic: Filter for Louvers?
### Original post:
Hi Folks...Do you have any recommendation on what kind of filters I can put on my intake louvers to keep the dust and rain out? Thank you.

### Reply 1:
Guys please suggest from your experience. Thanks.

### Reply 2:
Please suggest folks...thanks.

",[]
14542,"Date: 2012-02
Topic: Radeon 7970
### Original post:
I was going to try and get four 7970 into one rig. Are they worth the money and would an 850 power supply work. I currently run 2 5870', 2 5850's on one of these power supplies. If not any suggestion on power supply.

### Reply 1:
Each Radeon HD 7970 uses 250W under load so do the maths. I think you would need at least a 1400W PSU if you were to run 24/7 and you wanted the PSU to last over twelve months.

### Reply 2:
1200 or 1250W PSU should be fine if:a) good brandb) high efficiency (80-Plus Gold or better).850W is a good way to kill a PSU or the hardware or you (when your significant other kills your for burning down the house).

### Reply 3:
Not saying you shouldn't have some breathing room; but for you consideration: I ran 2x Radeon HD6990's (combined with: i5 2500K, 8Gb RAM, 1 SSD, 1 HDD, 5 Fans) 24/7 for a couple of months on a Seasonic PSU rated for 850W, before repurposing the system for everyday use. Works fine, still.Granted, I did undervolt the GPU's; but they still pumped out 1520 Mh/s.

### Reply 4:
or PSU'SAs for them being worth the money, I'm running a single right now and am happy with the output. I plan on adding 3 more in the next month or so, unless the 7990's come out.

### Reply 5:
Speaking as someone with 2 4x7970 rigs Running Seasonic 1250 gold psu...1050/900 :: 225-230 per card (1060-1080 for the rig).1150/1000 :: 245-255 per card (1130-1150 for the rig).Each rig has 2 x 120x35mm Delta fans that eat ~10W per - so you could drop these numbers by 20W, accordingly.

","[
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    ""hardware_name"": ""Radeon 7970"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""850 power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1400W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1200 or 1250W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Radeon HD6990"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""i5 2500K"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""8Gb RAM"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1 SSD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1 HDD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5 Fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Seasonic PSU rated for 850W"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""7990"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Seasonic 1250 gold psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""120x35mm Delta fans"",
    ""hardware_is_owned"": true
  }
]"
21960,"Date: 2017-12
Topic: Antminer s7 firmware problem
### Original post:
Hello, this is my first time using this site. (and no offense, but I hope it's my last because I'm only here to get help.) First, I'm 14 years old, and have an Antminer S7. It's been running smoothly ever since late January of this year. Just a day ago, the red LED came on and it stopped mining. I went to the IP and it had x.x.x.x for hardware version, and no information for cgminer version. I troubleshooted some and found out it was that the firmware had been lost. I reflashed a new version of the firmware, and it didn't work. I reset it using the button next to the LEDs. That didn't work. I've been kinda sad, as I've made over 7K with that machine. Please help. Sincerely, A very confused kid

### Reply 1:
Hi,Try moving the question here:<link> will probably be more people that can help there vs the bitcoin technical support section.Good luck!

### Reply 2:
If CGminer is not running you will not see all of the info on the status page. You say you found out the firmware was lost. If the firmware was lost you would never be able to browse to the web UI to see anything. Check in the kernel log for errors, that will tell you whats going on. You probably just have a bad fan or something simple.

","[
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    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": false
  }
]"
14163,"Date: 2011-06
Topic: hashkill windows version needed
### Original post:
hashkill, says it is faster than other miners.But it is only LOCKED to Linux as developer ""gat3way"" is an opensource Linux fan or may be don't know Windows programming.Some one with windows programming can develop windows version of hashkill in command prompt or better in GUI itself.For this i hope a bounty can be set, so some programmers write windows version.

### Reply 1:
I support this initiative.If hashkill is indeed faster (5% or more) a donation will certainly be sent.

### Reply 2:
It's a conspiracy to drive miners away from proprietary platforms. I also get a percentage from FSF's donations in BTC for doing this Now seriously I would not mind someone porting that to Windows as I have no plans to do that soon (have other more important stuff to do - it is not about bitcoin mining only, but also password cracking and adding new algos is a priority over porting to windows. I also happen to have my own life, a full time job and a kid to take care of). However, porting this to Windows is not gonna be easy as the code itself is messy and depends on linux-specific stuff a lot. It was never intended to be ported to win.Also, no, the performance advantage would be no more than 3% as compared to other miners. With the latest version, I had to focus on correctness and feature support over performance so the hashing speed kinda decreased using the ""fast"" command-line options. So no way you will be getting 5% more than phatk for example, except on 69xx hardware probably.Also, it would not run nicely on multi-gpu systems on Windows and the reason for that is that the windows opencl runtime does not honor <truncated> Until AMD fixes that on Windows, supporting multi-gpu co<rest of post truncated>

### Reply 3:
... wat.Heh, well keep up all the good work, we who cannot code thankye for all the work you do.

### Reply 4:
Well yes - you see you run your python miner and it uses a single device only. If you have e.g 4 GPUs, you would run 4 instances. That's no problem because those are 4 separate processes each of them having its own context and queue, operating on a single device only.Hashkill works on all GPUs and creates one (or more) threads per device, each of them having its own context and own queue, all of them working withing a single process (single address space). On linux, this works if you have SDK 2.3 or higher. On Windows, this would still work, however performance would not be optimal and CPU usage would be always ~100%.On single-GPU systems, that would not matter much. On multi-gpu systems on Windows (or Linux with older SDK) this sucks. And I can do nothing about it.

### Reply 5:
Ahh ok, thank for the explanation.

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21969,"Date: 2017-12
Topic: Antminer S9 - Error
### Original post:
Hi, guys i am experimenting a weird error with my S9, it keep re-starting & No showing info in the Miner Status tab

### Reply 1:
Try to do Hard reset. It may help:<link>

### Reply 2:
What psu are you using?

### Reply 3:
Hi guys.... in the log file.... it's appear "" ASIC RT error: (asic index start from 1-63) "" .PSU is APW3++ (1600W) BITMAIN OfficialHard Reset you mean the button in the front ? thanks

### Reply 4:
There are 3 ways to reset S9.I gave link earlier:<link> the last version (Power off, power up while holding IP button for 5 seconds, release - unit restarts with factory settings)I hope it helps.

### Reply 5:
just change the pool and fill all the 3 pool

### Reply 6:
Hi , guys my S9 AntMiner version its has the SD card slot on the left of the Ethernet interface.I have tried Soft-Restore and IP Reporter Restore and its keep no showing-data un Miner Status Tab Pool data are 3 slots filled and in Kernel Log appear <truncated> not found= 1876 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found=21834 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 8881 root 0:00 grep bmminerbmminer not found, restart bmminer ...Miner keep restarting in a loop !Any idea thanks!

### Reply 7:
Try to connect Miner DIRECTLY to your main internet Router!!!Without switch or other secondary device. Directly into your main router.

### Reply 8:
Pretty obvious you're missing files needed to run the miner. Says so right in your kernel log, ""bmminer not found""What bsp says is irrelevant since you're not fully booting up.

### Reply 9:
I dont think that will be de solution.... i have L3+ and D3 connected with switch.... and works perfectly... L3+ / D3 has Cgminer by default.... each time i make IP Report Reset, its works and my internal S9 IP is different, the matter is not the connectionThe matter is the BMminer, someone could got another alternative solution than bmminer-cgminer492 ""Zwilla"" update ? thanks

### Reply 10:
Grep bmminer not found means it crashed upon start of mining. This is a popular problem these days, and I suspect it's a power supply issue.Are you using apw3 on 110v?

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    ""hardware_name"": ""APW3++ (1600W) BITMAIN"",
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    ""hardware_name"": ""Ethernet interface"",
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    ""hardware_name"": ""main internet Router"",
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    ""hardware_name"": ""L3+"",
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    ""hardware_name"": ""D3"",
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]"
11853,"Date: 2012-04
Topic: 12.3 WHQL release ... )
### Original post:
<link> your opinions and tests)

### Reply 1:
Do not use. Not able to overclock anything (shows as 0 core and 0 memory).

### Reply 2:
@ssateneth windows or linux ??

### Reply 3:
No mining change from 12.2 Can still overclock fine, CPU usage still low, mhash unchanged.This is on a single 6970 on windows 7 64 bit, using clocktweak and diablominer.

### Reply 4:
I have the same problem with this version that first came up with 12.2. When using cgminer 2.3.1-2, SDK 2.1 and phatk kernel on a 5870, my hashrate is normal, but the miner never submits any shares. Downgrading to 12.1 helps.

### Reply 5:
Same. I was wondering why my 2.1 sdk wouldnt submit shares but 2.6 would.Also windows.

### Reply 6:
Im using the 12.3 WHQL driver, still able to underclock memory to 200 Mhz (optimal speed), Core Clock is now at 1020 Mhzhashing away at 457 Mhash/s on my single 6970 using vectors (77 degrees Celsius for temperature)Also I'm using full release OpenCL 1.2 driver, but the only difference I noticed is more stability. Used to have my core clock at 1015 MhzWhat hashrates is everyone else getting that are so bad with new drivers?

### Reply 7:
I get zero because I refuse to use any sdk other than 2.1

### Reply 8:
If the new drivers continue to have problems with SDK 2.1, I guess it's time to move on and use the SDK bundled with the drivers + diablo kernel. That gives me about 98% of the hashrate compared to SDK 2.1.

### Reply 9:
It's worth noting that I spent a lot of time customising the poclbm kernel in cgminer as well so that it works well with sdk 2.6, and of course cgminer has a diablo kernel option as well.

### Reply 10:
An a diakgcn option as well (use with -k diakgcn -v2 -w 256) .Dia

### Reply 11:
The other thing is that sdk 2.4/2.5 should actually work fine and they're very close in performance to 2.1 anyway.

### Reply 12:
I'm now using the 12.3 LLQL (Linux Low Quality Labs) release and it's satisfactory on my 6970s and 7970. The 7970 on linux would crash at lower than normal clock speeds with the 12.2 release but that problem has gone away with 12.3.

### Reply 13:
I take it back. It is slightly less stable with 12.3 than with the 8.921 driver release. I randomly get a GPU disappearing with 12.3 that doesn't reappear after a spontaneous reboot, but its fan keeps spinning.

### Reply 14:
Thing is, if it ain't broken, don't fix it. Why would I ever ""upgrade"" to a dodgy driver/SDK if the ones I use now are proven to be the fastest and most reliable of all? The latest isn't always the greatest. 11.12/12.1 and 2.1 forevah.

### Reply 15:
I agree. Most of the changes to drivers has to do with gaming functionality, improved compatibility with new games, and new feature bug fixes (tesselation, hydravision, etc). Until we reach a point thata) existing drivers/SDK either can't be used anymore (most likel)b) offer better performancec) offer improved stabilityd) offer more features (expanded under/overclocking & under/overvolting, etc) I don't see a reason to upgrade downgrade.

### Reply 16:
The fact is that the existing drivers -were- broken. It did not properly set up my mixed 7970/6970 rig and I had to put them a specific order on the motherboard to work, and to manually add devices to the xorg conf. So these problems should go away on moving from the preview release driver to 12.3. Furthermore, there were rumours of a very slight increase in hashrate going to 12.3. However, it introduced other problems as you've seen me say. But since I now have a working stable machine, I ain't changing it for shit unless there's a much more compelling reason.

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    ""hardware_name"": ""7970"",
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]"
3981,"Date: 2017-12
Topic: Avalon 8 Group Buy
### Original post:
Yes i am very interested if we can get a senior member that has done group buys in the past. Any reason you created a duplicate thread?

### Reply 1:
*I'm just cut a pasting another post here*I was debating doing a group buy for Canada at least. I already had the forms filled out with corporate information and sent in a week back. So we'll see what happens. I'm looking to get 30 depending on price, with another 30 filled by word of mouth already. My calculated price for the A821 is ~$2306 USD.

### Reply 2:
I am interested..

### Reply 3:
I'd be in for a few as well

### Reply 4:
Will need to be a bank wire transfer.Which creates a lot of tax issues.Ie 60 x 2200 = 132000 deposit in a bank account.My bank does not do wiresIf it did I would need ssn full name and full address of every buyer.I would need to report the purchase of the items and the sale of the items to the irs.All of that is fine but if the irs asks for the info of each and every buyer I would have to give it to them.So at this point it is a no go for me.

### Reply 5:
Phil. Thanks for that information. That changes he's things alot. Thank you

### Reply 6:
HelloDoes anyone have any connections with Canaan to do an Avalon A8 group buy? I really want to get my hands on one as soon as possible but I know they are going to be hard to get so thought if we were able to order 60+ we can get them directly from Canaan rather than a distributor. Thoughts?-CHEdit: post locked. Group buy from Canaan is not realistic due to bank wire for payment being required.

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11793,"Date: 2012-02
Topic: Combined rig with 6970 and 7970
### Original post:
Hi,I already have a host with two 6970. Now I am about to get a 7970. Question: What Catalyst, what SDK version to use for such a 6970/7970 combination?As for the miner: I plan to run the 6970s on CGMiner, the 7970 on <truncated>

### Reply 1:
<link>

### Reply 2:
OK, so summarized:- don't use Catalyst 12.1 (it's the newest driver!) - since it won't show the 7970- download 8.921.2 RC11 AMD Radeon HD 7900 driver <truncated> instead - and pray that you still see your old <truncated> btw: AMD sucks balls! pure driver hell - 7970 should be in PCIe slot #0. Use ""cgminer -n"" to get details.- SDK 2.6 sucks - but it's needed for the 7970.- keep old .bin files (pre SDK 2.6) to use with your 6970s.

### Reply 3:
According to Micah Villmow / AMD with Catalyst 12.1a preview it should be possible to run 6970 and 7970 in one host.See: <link> this posting also states that the 100% CPU load bug is back. *grrrrrrrrrrrr*

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    ""hardware_name"": ""AMD Radeon HD 7900"",
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4175,"Date: 2012-10
Topic: BFL Products
### Original post:
Hello GovnersTop of the mornin to ya all..So as you may or may not know BFL is finally nearing their shipping date. And as you may or may not already know, they have ramped up their promised specs as of the 29th. My question is, other than the price! ( the obvious ) and the latest specs, does anyone have any info on these elusive products? For example, will there be any colour choices such as crimson blue? How will they be operated, usb or stand alone? Which minning pool will they use? What will the interface be like? Can it be remotely controlled/viewed? Will there be a flashy oled display for quick monitoring? And so on, if someone could shed a little more light on these details that would be great. I mean, hell, it would probably help BFL sales immensely.. With all the competition out there an all.

### Reply 1:
Hi,The black is cool USBSolo or the pool you want, it is <truncated> / Minner? <link> a month to begin to move (in theory)

### Reply 2:
So the single SC will have to use a PC, its not standalone?

### Reply 3:
At the moment only ngzhang claims that Avalon ASIC is standalone. And to my knowlege only Jalapeos are USB powered.Regards

### Reply 4:
I believe the Avalon and Reclaimer are both standalone.

### Reply 5:
Reclaimer ?? Didn't know it, even searching here I can't find it, maybe another name?Regards

### Reply 6:
The Reclaimer ASIC system is from team Deepbit / Tycho

### Reply 7:
<link>

### Reply 8:
But this are bonds, so you can't buy this Asic and mine at home. Am I wrong?

### Reply 9:
For now yes.

### Reply 10:
You buy the bonds now and later exchange them for the physical machine. Look at it as a way to preorder and at the same time make publicity for Tychos <link> exchange

### Reply 11:
Well, how come it says otherwise in the press release?<link>

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13990,"Date: 2011-05
Topic: Using the x1 slot for mining question
### Original post:
How do I figure out if I can use the x1 PCI slot for mining on a motherboard? I have the ASUS M2N-E card with one x16 and two x1 slots. Can I use it for three cards?

### Reply 1:
Yes you can. Check out this: <link>

### Reply 2:
Thanks. So you can use any card with x1 slot to mine? It does not have to have any special specification?

### Reply 3:
You can use pcie x1 slots just fine, either make a gap on the actual slot so that the card can fit in or use an extender and do the same.If you are talking about full length pci slots, you can't.

### Reply 4:
It looks like some cards need the special one with the aux. power input... but other than that... for the purpose of mining BTC, there should be no reason why any card wouldn't work over a 1x slot.The 1x is all about the baud. A 16x slot can transfer data 16 times faster than a 1x slot... but, since PCI-e allows the bus and devices to negotiate their own speeds, even a high speed card should be able to negotiate down to a slower transfer rate.Just don't expect it to be useful for playing games though

### Reply 5:
Awesome link! Thanks, that has a lot of great info.

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    ""hardware_name"": ""x1 slots"",
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    ""hardware_name"": ""full length pci slots"",
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16892,"Date: 2011-08
Topic: Cannot get guiminer to connect to Deepbit. Please help?
### Original post:
I fixed it! I did it by updating GUIMiner's default Ufasoft CPU miner. I can't believe it doesn't come with that.

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    ""hardware_name"": ""Ufasoft CPU miner"",
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21463,"Date: 2017-07
Topic: MOVED: Como começar a minerar !?!?
### Original post:
This topic has been moved to Trashcan.<link> in English.

",[]
10002,"Date: 2016-09
Topic: Help with Spondoolies-tech SP20
### Original post:
I have 6 units SP20 miners connected to sha256 on nicehash.com. How do i switch to another algorithm like neoscrypt. Please help me someone.

### Reply 1:
As long as it's a sha 256 coin you can mine it by signing up to a pool that offers it to mine & direct your miner there

### Reply 2:
It's not possible to mine neoscrypt coins with an sha256 ASIC i'm afraid. Basically, you've bought a machine that was built for the sole purpose of generating sha256 hashes as efficient as possible, it cannot be converted to generate other hashes...

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22309,"Date: 2018-01
Topic: Question about 3 prong dryer outlet without earth.
### Original post:
Guys, I have only 1 250V outlet in my townhome (rented). Planning to use it for mining, to connect 2 A3's, 1 S9 and 1L3+.Dryer outlet is a 10-30R, similar to the one in the link below (just that the L shape on the top). I understand this old 3 prong does not come with earth but with neutral. <link> have ordered a adapter to make it more convenient for connecting <truncated> Question here is, Considering the dryer does not have earth, will it work with this adapter ? First I will connect and run just 1 antminer to see how it behaves and later point of time, will buy a PDU and connect all 4 to it. Please check and advice. Thanks.

### Reply 1:
WTF should have earth and no neutralnot neutral and no earth.H HGbuy a dmm from home depot test HH you should get about 220-240teat 1 H to 1 Gyou should get 110-120test the other 1H to 1 G you should get 110-120if those numbers do not show on you meter call an electricianhere is a digital multimeter DMM<link> that is your receptecle in the wall L \ / L is a ground \ / these are 2 hot lines each is 110/120 when you meter \ / 220-240when you meter L \ 110-120when you meter L / 110-120Do you understand? 220 -240 is way more powerful then 110 -120 be very careful

### Reply 2:
I recommend getting a licensed electrician to look at it or run the power you need. I would never risk my home with potentially faulty or dangerous wiring.

### Reply 3:
Absolutely, I totally understand only because you have used lay man terms lol. Please take a look about the ""L"" only being a neutral in the link below. <link> try to get a DMM today and post the results. Thanks for the detailed explanation. Appreciate it.

### Reply 4:
That link is about hot wiring a generator into an electrical system and they are just telling you how to do it when all you have is a 3 prong outlet. Neutral and ground are bonded together so this ""works""...but according to code the grounding conductor can be significantly smaller than a neutral is allowed to be. Lots of electricians run around after a storm charging people a couple hundred for a dangerous extension cord and hopefully good instructions.Once you get all that stuff wired up check temperatures of your breaker panel and outlet. There is a good chance there is some ~6ga AL behind there and the screws could be loosening up. Miners running at 30A will heat wiring and electrical components more than an oven or dryer due to the continuous load.

### Reply 5:
good point my home was built in 1971.The war with Vietnam / China caused a USA copper shortage my home had all AL wiring. many homes built from 1967 to 1974 across the USA have AL wiring and it caused many fires.Living in the great state of New Jersey a homeowner is allowed to wire their own home on his own as long as he lives in it and does not rent it.So I purchased my house in 1992 knowing I would replace all the AL wires on my own. I replaced everyone above code.My house has 12ga 10ga and 6ga copper throughout. I did it all except for the 150 amp box. I hired a licensed ELECTRICIAN for that part.So when mining came along I knew my wires were good.

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    ""hardware_name"": ""S9"",
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  {
    ""hardware_name"": ""L3+"",
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    ""hardware_name"": ""10-30R dryer outlet"",
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    ""hardware_name"": ""adapter"",
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    ""hardware_name"": ""PDU"",
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    ""hardware_name"": ""digital multimeter (DMM)"",
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22934,"Date: 2019-05
Topic: How to Automatically Adjust Antminer Frequency And Fan Speeds On a Schedule
### Original post:
And just which Antminers does this work with? Only s7 and earlier and only non-autotune s9's?

### Reply 1:
Unfortunately, I have not had the honor of using an S9 yet. So from what you're describing this may not work with them. It may be worth the try if the conf files are similar though. I'm sure I will update this post once I get some time with an S9.

### Reply 2:
For those with linux knowledge check out Ansible playbooks and cron jobs. You can do it pretty easily in linux as well.

### Reply 3:
@nunomsYou're kinds right. I didn't mention it in my original post, but that file is only necessary if you want to use load_balancing. There's a setting you can add in that file that will allow you to balance hashing power between the three pools.

### Reply 4:
Does anybody know how to do this directly on the Antminer S7? I tried making a cron job but it got erased once I rebooted. Then I tried modifying the script called by the only cron job <truncated> called by cron job <truncated> but it didn't run my modified script, and the modified script was replaced by the original script once I rebooted. The scripts I wrote will only work if run manually, but they can tell what the time is and adjust the frequency and fan settings accordingly, depending on what time you manually run the script. Any suggestions how to make it automatic? No other forums seem to have working answers that only use the actual miner. Also, does anyone know where the Antminer OS is getting the original cron job and script when I reboot? Thanks!

### Reply 5:
Hey everyone! This post is my version of how to adjust the fan speed and frequency of your Antminers on a schedule.Thanks to <link> bittalc1 for the work he did that allowed me to take a similar approach.As a matter of fact, my method is almost exactly the same, but I wanted to go more in depth so some people without the technical know-how can recreate it for <truncated> I'm not responsible if you somehow manage to brick your miner.You will need to have the following programs installed on a Windows machine to do this. It's also possible on Linux but I will not be covering that in this post.PuTTY, a command-line telnet and ssh client.PSCP, a secure-command line file copy program for PuTTYPlink, Command-line interface for PuTTYWindows Task <truncated> (recommended)All of the PuTTY clients can be downloaded here: <link> will not be registering the PATH variables in this post, so if you don't know what I'm talking about here, don't worry about it. Just drop plink.exe and PSCP.exe into your PuTTY folder under Program Files(x86).Begin by downloading the original config files for your miner to a safe location. I chose to download them to my desktop, where I would then copy the files to a <rest of post truncated>

### Reply 6:
Got it,the config files is this <truncated>

### Reply 7:
I got the config file from my s5 and it came out asCode:{""pools"" : [{""url"" : <truncated> : ""worker1 "",""pass"" : ""123""},{""url"" : <truncated> : ""nep"",""pass"" : ""123""},{""url"" : <truncated> : ""Nephyln"",""pass"" : <truncated> : true,""api-network"" : true,""api-allow"" : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : true,is not included. do I add it in there or is it located at a different location for s5?

### Reply 8:
Hi know this is old topic, but i just used it to start automating an Antminer A3This is what is working for me, it is bit different than your solution. Maybe someone needs it like i did, so thats why i am replying. Advantage of this solution is no need of an command.txt file wich need to be placed on antminer after a powerdown/reboot. These are direct commands to the miner.Code:@echo Slowing down antminer to Frequency 600 with Fan Speed xxx@echo Uploading <truncated> path to pscp.exe]\pscp.exe"" -scp -pw [password] <truncated> <truncated> Uploads complete! Rebooting now...""C:[Full path to <truncated> -ssh -batch -pw [password] <truncated> <truncated> restartpauseFor me this is the only way to get it working within windows10I do not run a command from a file, i just send the command directly. Somehow running from a file did not work with me. Hope its useful to someone.edit: @ this moment i am switching between two coins using this script.Now i want to depend the freq on the outside temp. Using phyton for this, so i made this phyton script:Code:# coding: utf-8# python 3.7.3import <truncated> json# put openweathermap key belowkey = ""[Key]""# put city belowplaats = ""[City]""# open weather<rest of post truncated>

","[
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    ""hardware_name"": ""S9"",
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  },
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer A3"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""s5"",
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22785,"Date: 2018-10
Topic: Setting up a mining facility, need some help and suggestions
### Original post:
Hi, I would be thankful for any ideas or suggestios to the following: We're setting up a mining facility for approximately 200 Antminer S9 miners. We would like to ask people with experience in minging - how much space would be needed for such a setup as well as the needed coolling systems and accomodations. So the questions are: - Approximate security maintenance costs.- Electricity cost approximation (in the country we are operatiing it's $0.03-0.04 kW). - Formula to determine electricity consumption. - Gadgets needed like electricity measurements, cables, hardware. - Whats the best material to use and how to implement it.- Electricity voltage optimal for the rigs. - Organising the airflow. - How many people would be needed to maintain it as well as how much m/2 per machine. - How many AC or fan systems and which capacity. Do you have recommended ones? - Ideal size of storage. - Do you keep a specific amount of spare parts and replacements? - Any recommendations of pools to be used or to create our own. Any other details regarding additional hardware or softare needed for the facility as well as any other recommendations would be highly appreatiated. Thank you in advance!

### Reply 1:
It would cost approx. $6k-$8k in electric/month for mining equipment alone as 200 S9 units is approx. 280k watts.E(kWh) = P(W) t(hr) / 1000(280,000 * 720 (24hrs * 30 days)) / 1000 = 201,600 kWH201,600 * .03 = $6,048201,600 * .04 = $8,064

### Reply 2:
So you're building out a 250k plus operation and you want people just to toss info at you. All of these questions are simple and easy to find by a normal person let alone a 250k operation. I can understand asking a question here or there but you're asking for a darn business plan.

### Reply 3:
I can't speak to everything on your list; as I'm a small scale miner.One detail people may need to know is are you planning on building a new facility or modifying an existing building? Here is a thread to give you a decent jumping in point regarding mining. First time/Small miner reference for getting started.That topic will go over the basics and give you insight into how you can estimate your power consumption. Also consider following the link to competitive hardware.Security - This will depend on the country you are operating in as well as the location urban or rural. Personally a secure facility with the minimum amount of doors and no main level windows would be best. You can then get a monitoring system for security that notifies the local police in case of alarm. These are handy, but false alarms do become burdensome. The thing is your facility is more at risk of being mistaken for something else with an easier to move stolen goods. Tools - Again I'm not to sure but generally you will be responsible for your own transformer(s) and electrical infrastructure. You will need/want racks obviously to position the miners and PSU's. I would assume you will also be investing in PDU's<rest of post truncated>

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    ""hardware_name"": ""electricity measurements"",
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    ""hardware_name"": ""cables"",
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    ""hardware_name"": ""PSU's"",
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  },
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    ""hardware_name"": ""PDU's"",
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]"
20893,"Date: 2016-01
Topic: I need help - Nothing work
### Original post:
Hi everybody (in first I warn you I don't speak English very well )I bought a ASIC Miner Block Erupter. I configured everything... But it doesn't work !!I let my computer mining all the night. A little green light was flashing, one time every... 15 seconds maybe. And the ASIC USB is really warm.I taked screenshot... Everything is normal ?<link> my pool I didn't earn anything... I have a problem, but I don't understand anything ! I don't understand where is my problem !Please help me... I'm waiting for your answers,Pseudo90

### Reply 1:
I desperate... Please...

### Reply 2:
I forgot, I see that too :<link> can help me ?

### Reply 3:
I have EXACTLY the same problem than him !!---> <link> <---EXACTLY !

### Reply 4:
Have you tried a different pool?

### Reply 5:
No. Do you have a good pool that I can try ?But there is nothing in the multipool.us website that indicates that I am accomplishing anything. I have not yet seen any worker activity or any hashrates reported or anything showing any feedback on the website.<link> I think I gave all informations...

### Reply 6:
Try <link>

### Reply 7:
Why 3333 ? Bitcoin aren't 3332 ?

### Reply 8:
The different numbers could be due to multi coin mining that switch between most profitable coins every ten or fifteen minutes. Or, it could be low diff / Medium Diff / High Diff depending on your hashes per second.

### Reply 9:
In CKPool, I'm very sorry but I don't understand everything. Where I have to go for make my worker ?And I see it's possible to send DIRECTLY in my Wallet with a payout adress ? What I have to do ?So, if I write "" ./cgminer -o <truncated> -u <truncated> -p x , Bitcoins go in my wallet ? And I have nothing else to do ? (and I write _worker too ?)Thank you for your help, you're nice

### Reply 10:
If this question is directed towards ckpool, you should ask this in the official thread, from what I've seen its quite popular pool

### Reply 11:
Okay, thank you With your experience, do you think that is good ? ---> <link>

### Reply 12:
Firstly I will advice you not to mine on ck's pool with a USB miner because ck's pool is a solo pool and in 2016 with the current difficulty of 120,033,340,651 you are out of luck to find a block at least in 100 years. Well if you want to try your luck you can mine there.But I think with a USB miner you should join a good PPS pool like Antpool or F2Pool and point your miner there because by looking at your op I think you want to earn some bitcoins quickly. So that might be the quick way to see some bitcoins o your account although not the quickest way.Looking at your screenshot everything is all right but you cannot see your bitcoin on your balance to rise up quickly because you are on a multipool.

### Reply 13:
Until you get a ""Yay!"" you are not going to show any activity in most pools. It is not until the miner produces some kind of actual ""work"" that was of value that it is going to show.

### Reply 14:
No one said ckpool that is a solo pool, and actually could be used for such a small miner. You'll be submitting so few shares to other pools you won't make much and the luck of solo could sometimes be better.Trying a PPS might be good also, but each share submitted will be a very very tiny amount, either way you will get a very small amount unless you get lucky on solo. I think you'll just need to find a pool with low difficulty as you only have around 300MHKano.is is not solo it is PPLNS as is eligius, they just have very easy to see reporting tools that update fairly quick.kano.is you can either create a user and password so you can log in to the site or you can just mine to your address, if you have a user you set your BTC address in your payment settings after logging in. If you plan to mine to your address put your address there, you can also use the _ to differentiate multiple machines but this is your choice. Both kano and eligius do not require a login you can just use them by BTC address.To see your stats on kano<link> see your stats on eligius<link> you want to try solo and test your luck (you will only get paid if your miner finds a block)<link> do have a way to check so<rest of post truncated>

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16503,"Date: 2023-05
Topic: What instruments are you using for mining?
### Original post:
Can someone throw more light on this mining of coins! I don't see result as aspected and I mostly end up with wrong mining sites. What are the necessary tools one can apply to support mining experience? Where can I get satisfying sites for mining? What and what do I need to do! Pleases assist I need fervent knowledge on mining bitcoin and a good recommended site where I can mined bitcoin.Anything to support my understanding and the necessary things involved. Please shared your good knowledge with me.

### Reply 1:
There are no legit bitcoin mining sites, particularly those that claim to offer ""cloud mining."" Any site that does make such a claim is either a scam or not worth your time and effort.As for your other questions, I suggest you start reading and learning the basics. Did you read the sticky thread in this board?Topic: BITCOIN MINING INTRO & RULES OF THIS SUBFORUM - READ BEFORE POSTING

### Reply 2:
If you search through Google the keyword ""mining of coins"" it won't tell you the right way but it will bring you to GPU mining. If you want to mine Bitcoin you just need an ASIC machine that supports SHA256 Algo and this machine doesn't need programming knowledge it is plugNplay connect it the router/internet and setup the pool config then it is ready to mine. If you are planning to mine Bitcoin this won't work on countries with high Electricity rate unless you are living on the country that has very cheap electricity rate.Please read this ""First time/Small miner reference for getting started."" Hope this would help.

### Reply 3:
Op people have given you some of the answers to your important question, and if you follow them you will do well. Mining is one of the area in the crypto currency ecosystem that needs a proper tutor and coaching like trading. But since you are asking about the equipment, methods and the skills. A single strike on the google would give you the answer you wanted. And the instrument needed would appear on the screen for you. So learn how to use the internet. It is not for fancy.

### Reply 4:
As far as I know, you are a shit poster and you never look back at your threads. You never looked for mining and you do not have any interest to start Bitcoin mining or whatever mining. People already answered and I believe you haven't checked any of them. Still, I would answer from my knowledge. You cannot mine Bitcoin on any website. Most of the websites are scams except mining pools. To start Bitcoin Mining, You need an ASIC miner that can mine SHA-256 Algorithm. You need a computer and an internet connection to start mining. If you have all of those, you are ready to go.

### Reply 5:
Bitcoin mining is no longer home mining. Explore Nicehash <link> and mining with GPUs and CPUs, although I prefer GPUs only.You will receive a reward in bitcoins or other coins that you prefer. Youtube has a lot of up-to-date information about Nicehash.This is bad advice for a beginner in the sense that beginners get used to Nicehash and do not want to think and look for more profitable mining opportunities, and only use a limited set of features of this service. But if you did not find information with its huge abundance, then this service is for you.

### Reply 6:
Mining Bitcoin is easy and simple only if you know the proper step procedure for this matter, but if you don't know and no idea on this, I am pretty sure your plan to invest on this thing will go into nothing. But like what I said if you know the guidelines I could say that you can earn bitcoin easily. However, about your question in site for mining for mining in bitcoin, perhaps you are talking about cloudmining, well at this moment there is no legit cloudmining that can give you a profit to have bitcoin, all of them now are just a scam. So be careful

### Reply 7:
I believe that cloud mining sites are bunch scams and I wouldn't recommend investing even $1 in them. In my opinion, there are ""no legitimate"" cloud mining sites out there. They usually end up closing down or scamming their users, so I advise anyone considering investing in cloud mining to stay away from it for the love of God.If you want to mine on your own, it's possible, but mining Bitcoin is challenging with the current high difficulty which is increasing by time. You might need expensive hardware such as Antminers, and if you have access to free electricity or you don't pay much for it, it might be worth considering. Personally, I would rather buy Bitcoin with my money than invest in mining, especially for the past few years.

### Reply 8:
Basically not all websites can be used as bitcoin mining sites, most of them are fraudulent, maybe so far the website that I think is good and has sufficient rating is Nicehash, and we recommend that website. CPU/GPU play a full role in the Nicehash mining website, but most people prefer to use ASIC rather than GPU or CPU.This ASIC is very different from the use of<rest of thread truncated>
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21875,"Date: 2017-11
Topic: Losing internet connection = it stops mining
### Original post:
So another quick question, I have no idea what to do: whenever my internet gets disconnected, even after it comes back, my miners won't mine. I need to manually reboot all of them and then they will mine just fine. Aside from the obvious ""don't lose internet"" what else can I do? Is there any setting so that even if it disconnects, the Antminer will go back to mining once the internet is back?I suggest wide and long and couldn't find the answer. Thank you.

### Reply 1:
They will go back to mining if the outage is short lived. If your internet is going out for 15-20 minutes or more, there best solution is running management software that will auto reboot miners that are not hashing.

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11763,"Date: 2012-01
Topic: AOCLBF 1.82b3 by WinD - Dynamic clocks adjusting Manual fanspeed on startup
### Original post:
brilliant. the hide osd by default is enough to mkae me deploy this beta on on my units! thanx will post results soon. also swtiching bck to my default restart times of 60 sec.

### Reply 1:
Sorry to say still get an Array error with beta 3 however i did notice something that may help. The array error happened right after we solved a block and i think I caught it early on. The auto hide OSD helped alot tho!

### Reply 2:
FRanz33pity...how about your internet connection? Are there frequent breaks? How stable pools you are on? Are you sure your system memory is ok?

### Reply 3:
I like it, but I wonder why the OSD shows an hash rate quite lower than what I get with Phoenix 1.7.x (with phatk2, same aggression).On a 5870@970/300 I get 410-420 Mhs against 440 Mhs with Phoenix. Similar difference with a 5830 and a much smaller one with 2 5750.Maybe it is just because hash rate does not seem to refresh frequently?

### Reply 4:
System Memory is fine..great in fact. Internet connection is ok to. I actually have multiple boxes on the same router in office spaces and at home and alot of times all of them on the same network are affected while other networks aren't. Sometimes only half on the same network while the other half are not. But i will say this. the more cards in the box the more likely the error. and i had another array error today and we solved to blocks early morning maybe there is a connection or something to do with the way long polling works idk. Im going to upgrade to Phoenix 1.7.4 from 1.7.2 to see if that helps. Im running half of my units with beta and the other half on release version. No difference.

### Reply 5:
<truncated> refreshes once per 2 secFRanz33i'm close to fixing this ... but have no much time..may you launch 1.75 version on one machine for comparison?

### Reply 6:
been using 1.75 on my 2x5870@930/300 for a couple days. NO array error...still testing. using Phoenix 1.7.5..will update in another 3 days

### Reply 7:
conducted research for aoclbf 1.75 too. Result is that memory leak occurs! For testing I changed pools to wrong ones so miner was unable to connect and was continuously restarting. I watched for Commit charge By procexplorer and it was growing up very quickly. Now I did some changes in code to minimize leak but can't completely remove it while..

### Reply 8:
Yea that was a problem with 1.75 but you can get around it i think with longer reconnect times. Phoenix is no where near as prone to idle as it was in the past so this feature isn't as important. 1.75 is lacking so many features compare to 1.82b3 but i think the array error lies in one of those features you added because i dont remember seeing it until before then. I will be trying a test soon tho. Im getting new cards and will see if the array error comes up when i switch the cards out like it does with 1.82. Keep at it. i think your close!

### Reply 9:
so many changes in algorithm were done that I decided to start 1.83 number After testing it is 3-4 times lower in memory leak when a lot of disconnects occur.Welcome <truncated>

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22007,"Date: 2017-12
Topic: What is the fan in the exhaust of Avalon 741?
### Original post:
Hello,The exhaust fan (inside the black shroud) on the Avalon 741 got broken, does anyone know what are the specification of the fan? Thanks all!

### Reply 1:
If you got the miner either directly from Canaan a few months ago or from one of their official distributors, contact them and open a a support ticket. Had a fan in a A721 die and they sent me a new fan and shroud pretty quick no charge.

### Reply 2:
Thanks NotFuzzyWarm, not sure where my friend got it, do you know the specification of the fan? will this fan work? <link>

### Reply 3:
no it is only 150 cfm look for 200 cfm or higher <link> I don't know if it will work as pins matter must be a 4 pin

### Reply 4:
@subieNo, that fan you linked will not work, it is a 3-pin fan without PWM control possibility.And as Phil said it is only 150 cfm.The stock fan for the AvalonMiner 741 is Cooler Master A12038-60BB-4RP-F1 12VDC 2.7A fan.Delta fan which Phil gave a link is good one.Also Sanyo has a good fan that I used to have installed with my AvalonMiner 6.0 (thanks to Phil and his group buy):<link>

### Reply 5:
@ philipma1957Thank you sir for the link and the information for the fans! Thank your very much! @HagssFINThank you sir for telling me the stock fan, I will try looking for it, Thank you very much!

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12031,"Date: 2012-09
Topic: Best Miner for CUDA or GTX 680
### Original post:
I just updated rpcminer-cuda today for 3.0 support. I only have a 460; so I haven't been able to try it to confirm it works... But I see no reason it shouldn't.<link> OpenCL miners crash nvidia drivers on hard exit. The cuda miners do not.

### Reply 1:
how much for you to tell me how to run it under windows?

### Reply 2:
Download and run the exe.I didn't include all of the files. Just what is updated. You will need to download rpcminer-win32 first for all the dlls and crap.1) download this: <link> unzip #13) Download my update: <link> unzip #35) move files from #3 overtop of files from #1.I guess maybe I should have just put the dlls and crap in my zip.......ALso, make sure to let me know if it works or not. I wasn't able to test it with a 6xx card... I'm curious to know..

### Reply 3:
okay did thatI open rpcminer-cuda and get error: ""The program can't start because librul.dll is missing from your computer""

### Reply 4:
I'm a video editor should answer your question indirectly

### Reply 5:
Rename curllib.dll to libcurl.dllAlso, it may still request curllib.dll... I'm not sure what about my project makes it look for both... but whatever.. I'll figure it out later and make another update.You will also need msvcr100d.dll and msvcp100.dll .. I found a copy of those 2 floating around here<link> time ever compiling anything in windows; so cut me some slack there.Here i made a download with everything you need. just run it with default command params for <truncated>

### Reply 6:
Now do i need a special RPC account or connects to any pool?

### Reply 7:
AM = morning, as opposed to PM

### Reply 8:
what i first thought then thought it wasn't that simple.

### Reply 9:
Check your CPU usage. It doesn't support cuda; it supports opencl which nvidia also supports.

### Reply 10:
I see, thanks and corrected.

### Reply 11:
<truncated> cgminer-2.6.1]# ./cgminer -n[2012-09-15 06:17:35] CL Platform 0 vendor: NVIDIA <truncated> 06:17:35] CL Platform 0 name: NVIDIA CUDA[2012-09-15 06:17:35] CL Platform 0 version: OpenCL 1.1 CUDA 5.0.1[2012-09-15 06:17:35] Platform 0 devices: 1[2012-09-15 06:17:35] 0 GeForce GTX 470[2012-09-15 06:17:35] 1 GPU devices max detectedCode: cgminer version 2.6.1 - Started: [2012-09-15 <truncated> (avg):103.1 Mh/s | Q:5 A:3 R:0 HW:0 E:60% U:2.2/mTQ: 3 ST: 3 SS: 0 DW: 0 NB: 1 LW: 206 GF: 0 RF: 0Connected to <link> with LP as user <truncated> <truncated> Started: <truncated> management [G]PU management [S]ettings [D]isplay options [Q]uitGPU 0: | 103.1/103.1Mh/s | A:3 R:0 HW:0 U:2.24/m I: <truncated> 06:19:06] Started cgminer 2.6.1[2012-09-15 06:19:06] Probing for an alive pool[2012-09-15 06:19:06] Long-polling activated for <link>[2012-09-15 06:19:06] Pool 0 <link> alive[2012-09-15 06:19:36] Accepted 60cc9cf3.9151d8f4 GPU 0[2012-09-15 06:19:52] Accepted 0d651d91.13f970de GPU 0[2012-09-15 06:20:22] Accepted 982b0d2f.a7862ba9 GPU 0With overclocking I can go as higher as 150Mh/s.That being said, there is no point in mining with an Nvidia card, except maybe if you have free electricity<rest of post truncated>

### Reply 12:
senseless, I got the original directions and your new download to run however getting a connection error, tried two different pools""Could not retrieve work from RPC server.CURL return value = 7 ""CORRECTION:I think i had standalone server syntax mixed up with <truncated> -url <link> -user userhere -password passhereI now get:""Could not retrieve work from RPC server.CURL return value = 3for example trying to connect to BTC Guild

### Reply 13:
Check the port, url and user/pass. It works fine when connecting to bitclockers.

### Reply 14:
can you test other pools and let me know which works, i have a lot of accounts but not that oneI copied directly from a working script my user/pass

### Reply 15:
Nope, just a normal account.You should just need to set -url= -user= -pass= to get it to run. You may or may not want to change other -gpu and -aggression related <truncated> -url=<link> -user=userhere <truncated> was able to find a 680 to test on this AM. so i know it's all working on 6xx devices now.

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    ""hardware_name"": ""GeForce GTX 470"",
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23682,"Date: 2021-09
Topic: Monitoring Software For Ebang Ebite E9+
### Original post:
Hi! i Have a Couple ebangs ebite e9+, I would like to know if there is any monitoring and control software for this brand, awesomeminer does not work or btctools, aptools, or cgminer, I have been looking for some software for a long time, if you know of one I would appreciate it or if you could program itthank you

### Reply 1:
Did you check ebang official website about their monitoring software? Did you heard about manage tool from ebang?If not better check this official managing tool from here <link>

### Reply 2:
I did it but it is a very basic application, I would like a more complete one with a remote control and alerts

### Reply 3:
hi.i'm looking for the ebang manager tool.can you please send it to me because i can't download it from official site. and if you found another program that works better sent it too.TNX

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15764,"Date: 2016-06
Topic: Antminer S9
### Original post:
I noticed the introduction of the S9 antminer: <link> Specifications:1. Hash Rate: 14.0TH/s 5%2. Power Consumption: 1375W + 7% (at the wall, with APW3 ,93% efficiency, 25C ambient temp)3. Power Efficiency: 0.098 J/GH + 7%(at the wall, with APW3 93% efficiency, 25C ambient temp)4. Rated Voltage: 11.60 ~13.00V5. Chip quantity per unit: 189x BM13876. Dimensions: <truncated> Cooling: 2x 12038 fan8. Operating Temperature: 0 C to 40 C9. Network Connection: Ethernet 10. Default Frequency: 650M Price: 2100 USDSince I don't see a lot discussion I wanted to ask you guys opinion. I'm mining using S7's. I hope to break even. If i do it's because of the rise of BTC and so I'm better off buying BTC and wait for it to raise. The price of the S9 looks quite high if you also count for the additional shipments fee, PSU, tax...the only upside is that you have the most power efficient miner so if you wait long enough you can break even and maybe make some profit. But then again, wouldn't you be better off to buy BTC.Curious to what you guys think about the S9.

### Reply 1:
Maybe its a good miner but with the halving to come in round about 6 weeks the hasung power is the same like the S7 now.

### Reply 2:
There are already a couple of threads with plenty of posts and discussion. Suggest you check them out.<link>

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13913,"Date: 2011-04
Topic: Is it possible to get bitcoins to use like 95% of your GPU?
### Original post:
Hi guys, I'm trying to run Flash videos while doing bitcoins but it crashes everytime. Any advice on what to do? Is it possible to get bitcoins to run at 97% percent instead of 100%?Thanks

### Reply 1:
If you are using poclbm, try setting the -f flag to something high like -f 60 or -f 120.

### Reply 2:
What GPU are your using?

### Reply 3:
5970.Thanks

### Reply 4:
if flash crashes your card is unstable.if it is overclocked you have pushed it too far. Try installing 3dmark06 and make it loop the two first test 5-10 times and see if that crashes. If it does you have to lower the clocks

### Reply 5:
Sounds about right FnuGk.Also could be running too hot.My 5870's seem to run about 97% util on their own and flash runs no problem.I do notice that the hash rate on one card will drop by about half running when flash videos though.

### Reply 6:
just turn off hardware acceleration in the flash settings and that won't happen anymore.

### Reply 7:
yes, turn off the flash hardware accelerator will solve it.

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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3dmark06"",
    ""hardware_is_owned"": false
  }
]"
15875,"Date: 2017-02
Topic: Chinese police raid miner factories in its oil capital city, 1k+ miners seized
### Original post:
<link> week, Chinese police raid douze miner factories in its oil capital city of China for electricity theft, over 1k + miners seized.<link>

### Reply 1:
Legit?

### Reply 2:
Electricity theft - sounds plausible.

### Reply 3:
Electricity theft is an serious issue and they were greedy and dump enough to do so,with thousand plus miners they could have earned bitcoins well enough to cover the electricity charges,but greed got the better of them

### Reply 4:
- posted in Speculation board.(edit: moved after report thanks to the mod)- by a brand new, throwaway account- with not enough evidence- after the drama and the FUD about China and bitcoin to push price down.i have no other conclusion than calling bullshit.

### Reply 5:
Hehe, ya. Pics or it didn't happen. I'd like to see some legitimate news on this. It's hard to tell what's made up and clearly the OP with 1 post (this one) has an agenda.

### Reply 6:
It can be electricity theft issue as you can see in first pic, if it is legit.

### Reply 7:
Can someone translate this?Is it possible to tell what kind of miners those are from the pictures?I think it would be stupid to risk a lot of new mining equipment by stealing power.It could be real, growing up I saw people doing illegal power hookups all the time.(I even know of someone who died trying to hook up illegal wiring.)

### Reply 8:
Here is google and I say it happened. Seems pretty clear cut.Gear looks to be s-2 s-4 s-5 and maybe dragon minersso the only way they can make money is stolen power.12000 machines at 1-2th is only 10 or 20 ph still most likely a lot more out there.this is good news. my hope is the s-7 farms stealing power get caught. (if they exist)

### Reply 9:
I guess this is good for us as the difficulty's going down some, and the chinese have slighly lost hashrate, but could this be the begining of the Chinese government really cracking down on mining and Bitcoin? Not saying that they haven't already tried, but it's some interesting stuff.

### Reply 10:
Crackdown on a site for electricity theft is NOT a crackdown on bitcoin.

### Reply 11:
The police will catch more if they are wanna for searching or investigating about the other place, You might for seeing about the S-7 farm get seized by the police with a lot of the population are too difficult for controlling the intention of electricity theft.<link>

### Reply 12:
Did they seriously think they would get away with stealing that much power?

### Reply 13:
Obviously they did think they will get away with it and for a while it seemed as if they actually got away with it.

### Reply 14:
Running bitcoin are not be sue you for always in there and monitoring your mining farm. to be honest, if they think they can building the hidden farm and trying for leave them in the hidden place and this is are not useful at all. They are forget if the police are having a brain.

### Reply 15:
So much strange news coming out of China lately its hard to know for sure if its legit with out knowing how to fact check it.Seems like the pre election it was Chinese issues and now we are back on it.Stealing power in one of the cheapest places to get power seems like a good plan.

### Reply 16:
If you read the article it looks like all old gear S-2's S-4's S-5's and dragon miners which use .6 to 1.2 watts per gh.The only way you can earn money with this gear is with free or 1 cent power. So most likely this is a true story. Someone had a lot of old gear and decided to steal to run it.Now if you can get legit 3-5 cent power. The s-7 still works to make money at 5 cent power the s-7 makes make at a diff of 400 around 16 usd a month.At 3 cents the s-7 makes money at a diff of 600 around $14.50 usd a month

### Reply 17:
I wonder how the police would dispose of those seized hardware. Are they mining themselves? Or were they destroyed or auctioned to the mining community that uses legal electricity - which I doubt as it would be unprofitable.

### Reply 18:
I would think they would destroy it. As it is older gear.I would love for this to happen more often.But there just may not be that much really old gear.

### Reply 19:
Electric rates in China VARY - they might see more variation than the USA or Canada sees depending on where in the country someone is at.A very large part of the ""super cheap hydropower"" for China is in areas that are low on population, and they don't have anywhere near the transmission infrastructure that the USA has to distribute it.The 3 Gorges Dam complex in particular seems to have a lot of it's power go to waste 'cause they can't get enough of it to anywhere useful (yet), and they've not gotten enough ""close enough TO use it"" industry built up to date to fully utilise the capasity of those generators.

### Reply 20:
With electricity so low in some areas, I'd rather win pennies that will become gold some day that win a bit for<rest of thread truncated>
","[
  {
    ""hardware_name"": ""s-2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s-4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s-5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""dragon miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s-7"",
    ""hardware_is_owned"": false
  }
]"
21018,"Date: 2016-05
Topic: Can't get cgminer to run
### Original post:
I can get cgminer to run. When I click on the StartMining.Bat file I had to create and it open then crashes instantly without any error codes. And when I run it from the cgminer.exe I am able to login to my pool but it won't detect my device(which is an antminer u3 usb) and I have the driver installed.Here is .bat commandsstart /D <truncated> 115200:0.54 -o 50.31.149.57:3333 <truncated> -u jkooper.Hero -p XXX --bmsc-voltage 750 --bmsc-freq 225

","[
  {
    ""hardware_name"": ""antminer u3 usb"",
    ""hardware_is_owned"": true
  }
]"
10001,"Date: 2016-09
Topic: WHAT! :( Butterfly Lads won't deliver the Monarch Till March or April:(
### Original post:
Please add April 2015.

### Reply 1:
Are you allowed to cancel orders? I mean, delays like this, with new difficulties and teh works, really make the investment pay lower than originally calculated. Do they offer reimbursement for delayed products?

### Reply 2:
their motto should be: ""When you go with BFL, you'll see some Big Fucking Losses""

### Reply 3:
I had to LOL at this. Has there ever, historically, been a time where buying mining rigs is more profitable than just spending the same money on coins? I'm quite curious.

### Reply 4:
Faulty poll is faulty. No option for 'in two weeks[tm]'

### Reply 5:
BFL should start to be associated with the company VALVE. If anyone is familiar, there is a very well known term called ""Valve time"". When valve says ""coming out in the next few weeks"", it's not unknown to take over a year. Soon we'llb e working with BFL times

### Reply 6:
come on, come on let be real here! lol

### Reply 7:
I can share my personal experience which is a resounding NO! I pre-ordered a 30 gh/s rig back in March '13 for $689, with expected delivery within a few months. At that time BTC were trading for appx. $40 each. I could have bought over 17 BTC for that money, but the lure of 30 gh/s promised much, much more. Of course, by the time I got my rig in November, I could only mine 0.05 BTC per day. Today I get 0.015 per day. I'm never, ever going to make my money back, and the lesson is, if you are considering buying a BFL product, just buy BTC instead.

### Reply 8:
This.

### Reply 9:
LOL noLOL fuck NOOnce you give them your BTC or $ they ain't giving it back for sweet fuck all.

### Reply 10:
No one has burned BFL down yet and pissed on the ashes? Thought for sure someone would go postal on that place

### Reply 11:
I might recommend linking Josh Zerlan's ""Inaba"" account as well, which is practically Butterfly Labs' official mouthpiece on these forums.

### Reply 12:
No 2015 option?

### Reply 13:
Sometimes it feels like BFL is set up to be the retard hardware company on purpose. A plot by all asic manufacturers so the diff doesn't scream up any faster than it already is.1. Be the most visible marketing wise to gather the most customers.2. Hold customer money to keep the majority from mining.3. Don't ship until it doesn't matter.

### Reply 14:
Seriously, what did you expect !?

### Reply 15:
Heres BFL_Josh trusted feedback link. Please give him a Trusted feedback <link> Here's Inaba trusted feedback link. Please give him a Trusted feedback as-well <link>

### Reply 16:
Oh wow, March or April. I was expecting much later.

### Reply 17:
How many times does this have to happen before everyone stops giving them money....In March it will be April, in April it will be ""in two weeks!"" for months.

### Reply 18:
poll lacks ""never""

### Reply 19:
If you were dumb enough to buy from BFL, without googling the name. You deserve to loose everything.Sorry, always risk in mining gear, I've got $12 grand in Black Arrow, But they delivered last time. So this is a risk I was willing to take.BFL could of drove a van to my door step with unit's in the back of the van. offered me 2TH for $500 on the spot, 20 second delivvery, and I'd still not expect to get product for 6-9 months.I can't believe these guys are still getting sale's. I don't blame them. I'm sure they are making a fortune lmao. But the fact people are still buying.. Shame on you guys!

### Reply 20:
Thank you. You just backed me up to another post of mine!

### Reply 21:
does anyone know of any more BFL member in bitcointalk i would like to make a list of BFL members/employees or if some one already done it, please post the link Here

### Reply 22:
Nice! Thanks anymore out there

### Reply 23:
nasser sometimes posts here. Think he is bfl-engineer Edit - *corrected username

### Reply 24:
They are all crooks or full retard, and should be shunned from the community for life...We need last names and a bitcoin blacklist! KNC is the best hands down, and thats why they are all sold out. I will get mine 1st day! So stokedBitcoin Boxing Match- i would like to fight all BFL employees in the ring for charity. Punching just one of them in the nose would bring me so much joy. Thanks for the most expensive paperweight ever!

### Reply 25:
here are some more members of BFL.Link:<link>

### Reply 26:
Obviously the person who set up this poll is unfamiliar with BFL. December 2014 would be my best guess, and I'm an optimist.

### Reply 27:
ha! :0) i'll leave this comment along hahahaa

### Reply 28:
Also i want to give them a little bit of roooooom to prove me wrong LOL

### Reply 29:
people who ordered monarch must be a little retarded after all BFL history, i dont want to offend anyone, but its pure stupidity to order from them after all horror history they have

### Reply 30:
As a current owner of 6 Singles ordered in April '13 and delivered in Oct<rest of thread truncated>
","[
  {
    ""hardware_name"": ""30 gh/s rig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Monarch"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""6 Singles"",
    ""hardware_is_owned"": true
  }
]"
4036,"Date: 2012-02
Topic: FPGA  development board  ""Icarus""  - 3rd batch delay 1week.
### Original post:
any version of icarus bitsteam after V2 is compatible. at least support now V2~V4 function.i may add some new features in the bitsteam in the future, but they will be at least compatible with now V2~V4bitsteams.

","[
  {
    ""hardware_name"": ""Icarus bitstream"",
    ""hardware_is_owned"": false
  }
]"
23464,"Date: 2021-03
Topic: Canaan Avalon 1047 reset / connect to PC / PSU not starting problems
### Original post:
Hi,I bought several used miners Canaan Avalon 1047 and I'm facing several different problems, maybe somebody have more experience with them:1. Some PSUs don't even start. Is there some known issue to check first?2. On some the PSU is working, then I see them connected to the network hub but no DHCP working (no IP assigned, just device attached to 100MBps port of the network hub).The miner's board is blinking <truncated> and again. Tried to reset them with FUNC, pressing for more than 10 seconds at start - result is blinking white. But after the restart the same happens again - no IP assigned, no access to the miner and blinking <truncated> and again. Tried to connect laptop via LAN cable (straight one) directly to the miner, no network hub. Configured the laptop network as specified to IP 192.168.168.100 and tried to access 192.168.168.168 (the miner in setup mode). Not successful. I need to set them to DHCP operation in my network, how this can be done - how can I put them in factory default?PS: there is no 12V to the hashboards (yet), but with no network set on miner probably this is normal.

### Reply 1:
It seems that the PSU you received is dead usually due to delivery without care.About ""no IP assigned"" can you try to use the reset""RST"" button instead hold them for 15 seconds then release. After that try to scan the IP again and access the IP through the browser in incognito mode.If not work try to use the software provided from canaan.io from here <link> the name of the app is ""FMS"" download it and install and let's hope it can detect your units.

### Reply 2:
Still have problems to reset the miner to factory default.Using the method from Canaan I was able to put the machine in fixed 192.168.168.168 IP, this means service mode. But I can't still access it via web browser, only can ping and detect with network scanners.Is there also a way to re-flash the board?

### Reply 3:
I can't find any on Google that you can force to flash it. It seems that you can only flash it through the browser.Can you disassemble the unit and take a picture of your control board. I just want to know the control board name so that we can use it to search for ways to flash it.Or try to access it with the telnet command.Here's the command.Code:telnet 192.168.168.168Or use any SSH tool to access that IP and if it's asking for a password try to use root. Let me know if it works then we will try to find some ssh command to reset it to factory default.

### Reply 4:
Connecting your miner to a PC isn't all that simple, I have written a simple guide which you could follow here > <link> don't use Avalon gears, but common sense is that if the miner is set to static ip, you have only 2 ways to sort this out, 1- Reset the miner to factory (which you seem to be having issues with) 2- Configure your router to work with the miners static ip, contact the person you bought them from and ask them about their gateway/router IP address and use that on your router.I am sorry I can't help any further, if this was Bitmain related I would have probably helped you a lot more, try to reach out to HagssFIN, he is an expert in troubleshooting Avalon mining gears.

### Reply 5:
The progress so far - got one of them working. For like ... 10 minutes. Then started to indicate overheating without any hashing, everything is stone cold.Seems there is a problem to read fan speed, the fans are attached and at start I was able to hear brief lowering of fan speed, then went back to maximal:Temperature 13C / 55F Fan 0

### Reply 6:
Thanks for the support! I will contact HagssFIN too.More progress, one of the boards was set back to factory defaults successfully, all others are reacting inadequate. The one with 10 seconds online behaviour - after putting new fans started to perform normal, no red blinking anymore etc. Now the next drama, 0 hashboards, will soft this out slowly.Tried to update to the last firmware, failed: <truncated>

### Reply 7:
I haven't needed those methods, so unfortunately I don't know.Have you tried to ask Canaan?

### Reply 8:
See the manual: <link>

### Reply 9:
Was successful to restore and gain access only with 1 of 6 miners. Is there another method to reset / flash BIOS etc? Also how can I handle FAN 0, Hashboard 0 situation? Probably there is kind of safety lock when the fan speed is not recognized to not start hashboards?

### Reply 10:
Yes, their support responded, now I'm waiting for analysis of logs etc. Have no idea what to do, I can see weird values when parsing the <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':2,'Local Work':6,'Remote <truncated> Blocks':4,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Canaan Avalon 1047"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  }
]"
23045,"Date: 2019-08
Topic: Antminer S9 One Hashboard Does Not Hash
### Original post:
When I run the device, it finds all 63 asics for all 3 boards but after 2-3 minutes, 3rd board stops hashing. What might be the issue here?Kernel log here;Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] <rest of post truncated>

### Reply 1:
I'm afraid that your miner is infected with a virus or remote attacks and steal some of your hashrate.I suggest you flash the miner with SD card offline no internet and change the root password as your first protection layer then try to run the miner again.Read this guide from here ""Viruses, malware and remote attacks on Antminers How to prevent and remove them?""

### Reply 2:
Can you reduce the frequency to anything below 600? the lower the better, I can't tell what firmware is that by looking at the kernel log alone, but if it's 2018/2019 you could try the low power enhanced mode, on the 2018 LPM version it's a checkbox you need checked, on the 2019 it's in the drop menu.The reason I asked you to do so is because I do have a few gears that refuse to run with the normal settings, and I do have the same problem, it does run for a while and then the whole miner would stop , it's usually a single bad board that causes all this mess, what I did was collect all those bad hash boards together in 2 miners (3+2) , used the latest 2019 firmware and set them to -2th and they now work flawless, I sure am not endorsing the use of bitmain version, since the community members here seem to hate it, I personally find it good enough for the job.

### Reply 3:
I use the current bitmain firmware on 2 of 22 s9sI will be doing the firmware on about six of my 22 s9s

### Reply 4:
OP says a single board stop hashing , that is not a sign of infection what so ever, it is very unlikely that the hacker would leave 2 hash boards and use a single one, let alone the technical complications of mining to 2 different pool using the same control board !.This is most likely a freqnecy/voltage issue as i have explained , or simply the hash board is dying.

### Reply 5:
Hello good sirs, I know Im a little late but its some kind of holiday here. I wanna give more info. The device hashes 13.5+ for some hours and then goes back to 9 TH/h again. I dont think its a dying board, why would It work for hours then? It hashes for hours, then stops again, then again hashes. It has been like that for 2 days. Any idea?

### Reply 6:
You are most likely correct that it is a dying hashboard.

### Reply 7:
A dying hash boards does not mean a dead hash board, dying is the making of death ( if that even makes sense), which means that the board will soon die, or at least this is what they usually do when they start acting the way you described.if you want to eliminate all other possibles, you should do the following:1-reduce the frequency :if you have changed a chip on the board or for whatever other reason, some boards need to be ran on lower frequency than others, I did explain in details in my previous post so please read it <truncated> the other 2 hash boards, let's just make sure it's not a power issue.Kindly report back your findings so we can help you better.

### Reply 8:
Mikey is describing a pattern of behavior that boards do for a week or two or three then die.I have run s9s since 2016 batch one. I have had twenty or more boards act this way then finally truly die.Think of a person that was old and got sick quite a few times got better a few times then they die.Not every person does that.Not every hashboard does that.But quite a few do this.

### Reply 9:
Thank you for the help especially Mikeywith, Its still acting same with reduced freq and checked about power. I will try to use Braiins to lower then frequency of just that faulty board. Because maybe, the device needs to catch ""expected"" hashrate somehow and when I lower freq with bitmain firmware it still cant catch the expected hashrate. These devices are all mystery to all and always will be. Its just <rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""hash board"",
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22900,"Date: 2019-03
Topic: Dragonmint T1 - Cant find IP Adress
### Original post:
Hello Guys, hope someone can help me. I bought the Dragonmint T1 and i set everything up. Lights are coming on and the miner is working. But there is an issue: I cant find the IP adress or get anything to get access to the miner. Here are the things i tried:- I connected the ethernet cable to two different computers and got the same issues.- I tried to connect the miner directly to the router and it also doesnt work- The connection reacts to restartings, on/off and plug in and off of the ethernet cable but it says: unidentified network i see that it is sending packages to the miner but the miner itself doesnt send anything back. when i used the windows troubleshooting it says: No IP Configuration- I tried to change the ip adresses manually but it still doesnt find anything- I checked if dhcp is activated- I restarted the router, the computers and the miner, also tried set ip on the miner- After AngryIPScanner i also tried a different scanner which is called AdvancedIPScannerA problem that i have is, that i am not the admin of the router, so i cant check the specs, ips and such but i have all permissions to connect devices to the network because i have the internet access keys (not <rest of post truncated>

### Reply 1:
read this guide <link>

### Reply 2:
It seems that you can't find the miner's IP with your scanner and maybe your router is in static IP or DHCP is disabled or your miner is in static IP. Can you do this. - Connect your ethernet cable from the miner directly to your PC- Open Command promt(CMD)- Then type ipconfig /allAnd let's see if you can detect the miner's IP If it shows IP on default gateway then access it through browser and login to the miner's dashboard and find the network settings and check if your network type is in Static or in DHCP if it's Static change it to DHCP then apply after that reboot and connect the miner to router back again then scan it again with your IP scanner.

### Reply 3:
Are you in the same subnet with the Dragonmint?

### Reply 4:
You are talking about the subnet mask.I meant the subnet itself.<link>

### Reply 5:
no it isnt when it automatically connects it gives the ip 169.254.157.47. Far away from my local network range. i tried to set the ethernetconnection to the same subnet manually (with beginning 172.16.2.X) <link> good thing is that the ip scanner found the ethernet connection.when i turn on the miner the symbol also lights up.<link> when i try to access the ip via browser it says no connection.here are the ip settings for the ethernet connection<link> the ip i took the ending 30 as ungiven ending then the same subnetmask of my wlan pc internet vonnectionand also the same dns server the standart gateway is the ip from the router.as in my post before i also recognize that the connection doesnt send any packages back.it has always been like that.maybe thats the reason that i cant access the site because no information is getting from the miner to the computer.i also heard that the miner connects with dhcp only. so i dont know if its the right way to change the ip adress manually because then it would be tcp/ip.

### Reply 6:
Maybe you put wrong settings in your angryIP that is why you can find the exact IP of your miner. Look at mine below so that you can get some idea.What you do is to check first if what is your gateway ip just like the image above. As you can see my gateway IP is 192.168.1.1 so I put 192.168.1.1 from the IP range to 192.168.1.255 and then netmask(don't touch) and hostname(don't touch)So, if your gateway IP is sample 192.168.254.1 you must put this in the ip-scanner range from 192.168.254.1 to 192.168.254.255Then collect alive IP's if there is no hostname shows you can test the alive ip's one by one.

### Reply 7:
When i put off the miner it gives me this <link> i turn on the miner it gives me this but after a short period of timesometimes it does sometimes it dont<link> telephone also appears to be offline after i turned on the miner <link> seems like its reacting to that ip address.

### Reply 8:
Here it is <link> like there doesnt exist any Gatewayi also recognized that the ethernet connection doesnt send any packages back.

### Reply 9:
When i look on my screenshot it seems like it is in different subnetsthe ethernet connection is 255.255.0.0my wlan pc internet connection has subnet 255.255.255.0.

### Reply 10:
This IP 169.254.157.47 it seems that your miner is getting ""invalid IP config"" or ""bricked or corrupted program"" according to the image above. I think you should do here is to fix the IP config I experienced this problem before but not in the miner mostly I can fix this issue by using our company software I don't know how it works but it looks like it is scanning the IP ranges from 10.0.0.0 to 192.168.254.255 with port 80,443 and 23. Anyway, I'll try to find this tool soon as I forgot the folder and name of this tool. What I think right now is if yo<rest of thread truncated>
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    ""hardware_name"": ""Dragonmint T1"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Ethernet cable"",
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  },
  {
    ""hardware_name"": ""Router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AngryIPScanner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AdvancedIPScanner"",
    ""hardware_is_owned"": false
  }
]"
11894,"Date: 2012-05
Topic: What Software are GPU miners using in Windows nowadays?
### Original post:
I got into mining just under a year ago and have stuck with GUIminer since then in a ""ain't broken don't fix"" bind. Downtime is money as it goes.Anything better worth the time to switch to? I'm running win7 and not looking to switch OS, just the software miner.

### Reply 1:
cgminer is the de facto miner for larger installations. It gives you everything in one place, including failover pool support, monitoring, API control, overclocking, and more.

### Reply 2:
I'm a guiminer v2011-07-01 user and for a very good reason.I use a 6870 and get around 375 MH/s with guiminer compared to around 315 MH/s with cgminer. I've tried all the miners with pretty much every config, and none of them even come close to <truncated> My hashrate is better than that when doing multiple thing on my desktop including watching video.I've recently tried the new version of guiminer and noticed that it crippled my internet speed so I went back to v2011-07-01.

### Reply 3:
You'll find a large population uses cgminer, some use DiabloMiner, and not so big population using Phoenix (with or without GUIMiner frontend). Personally I use Phoenix 2, because I get ~2% more than any other miner I've tried for my 57xx/58xx cards.

### Reply 4:
2% is a pretty low margin. are you sure it's not just statistical noise?

### Reply 5:
What SDK and clocks/voltage are you running to get 375MH/s out of a 6870?

### Reply 6:
watching.

### Reply 7:
I got 380MH/s out of my 6870 through poclbm via guiminer in windows 7, SDK 2.1, stock voltage and clock (900 I believe), memory at 300.

### Reply 8:
That almost sounds to me like a bug in the way the hashrate is being reported by GUIminer. There might be improvements to be made with different combinations, but 380@900MHz is more inline with what you'd get out of a 6950 with 25% more shaders than a 6870.

### Reply 9:
Whoa, looking at this in retrospect, I get 280, not 380, with my 6870.My fault.

### Reply 10:
They're in the top right corner of the pic.Catalyst 11.91 GHz core200 MHz mem1.187 V40% fanExtra flags: -k phatk2 platform=0 device=0 VECTORS BFI_INT AGGRESSION=6 worksize=128 FASTLOOP=falseThe key is to run 2 workers on the one card. With a single worker, even at 13 aggression, the result is similar to the other miners. If you guys get a decent boost in hashrate from this, don't be shy with the donations now, lol.

### Reply 11:
My 5870 @ 1035/355 gets 481.84 0.17 mhash/sec. It's extremely consistent on dedicated cards that don't have a display assigned to them. I tried Diablominer and got about 473 5 mhash with all sorts of different worksizes/arrays/f numbers/vectors. It's just too inconsistent and low compared to good ol phoenix. The author of course tries to come up with an excuse that phoenix must be inflating mhash somehow, but he's really egotistical and full of himself, so whatever

### Reply 12:
Your mhash might hugely be higher, but are your shares/minute higher too? Shares is what counts. Also I realize this might be hypocritical to my above post

### Reply 13:
I'd never considered it before. So, I just stopped everything running on my PC and restarted guiminer to wipe the stats. After 15 minutes, one worker had 43 shares, the other 38.(43 + 38) / 15 = 5.4 shares per minute.

### Reply 14:
I have four 5870s running at 900/300 with phoenix, and I average 425 among them. Your clock is quite a bit faster, I'd expect more than 481 at 1035.

### Reply 15:
There's variability in the shares, 15 minutes probably isn't nearly enough to get a good idea of how much you're hashing. Try running for a 24 hour period and see what happens, then try again with a single instance.

### Reply 16:
I would say that shares per minute isn't a large enough sample to get a good estimation. I agree that the number of shares is the most important statistic, but you could get a share after one hash or after billions. It's just about letting the miner run long enough that the law of large numbers comes in on your side.

### Reply 17:
I'd have to stop using my PC for a day. That's not going to happen. Just out of curiosity, what are you guys getting for shares per minute?

### Reply 18:
Im running POCLBM in command line on my 6850'spoclbm -d1 --host=xxxxx --port=8332 --user=bmgjet_1 -v 2 -f 2 -w 128poclbm -d1 --host=xxxxx --port=8332 --user=bmgjet_2 -v 2 -f 2 -w 128This command gets me 278-283Mhash on each card overclocked to 1ghz core 900mhz memory.Its using some hacked up kernel that was posted on here last year and modified for best speed on 68XX cards.Getting 5 shares per min on average sometimes hitting 6 if I dont use the PC.

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11953,"Date: 2012-07
Topic: Port ZTEX Core for Virtex-5 Device [40 BTC as reward]
### Original post:
can someone port the ZTEX Core that is running on a Virtex-5-155T ?I am spending 40 BTX Reward for that Job.

### Reply 1:
Problem is solved. Here is the Solution:<link>

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9674,"Date: 2016-01
Topic: Antminer U3: Decentralization continued
### Original post:
Yay, I've been waiting for for these! The U2s were great.

### Reply 1:
why is it so hard to not include a power cable for the ac/dc adapter. Even though the original bitmain post doesn't evenmention supplying that either.

### Reply 2:
most cases its Customs won't allow it to be sent with one, don't know Thu if that's the case here . why we had to buy our own paste for the upgrade kits s1 to s3 customs had issue with the paste .With good reason .

### Reply 3:
That doesn't even sound like a plausible reason. How the hell did the paste get here originally? Someone smuggle it in?Or maybe it's financial? Customs does some stupid stuff but why would customs give a shit about a cable?They don't! but whatever excuse they want to give ...

### Reply 4:
FAQ and Technical SupportSetup <truncated> power via included AC/DC adapter. You will need to purchase a power cable for the AC/DC adapter.External controller [PC, Pi]USB cable is includedDogie's comprehensive setup guide now up in super HD!Configuration

### Reply 5:
That wasn't clear enough ?

### Reply 6:
You would be surprised.

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    ""hardware_name"": ""paste for the upgrade kits s1 to s3"",
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21563,"Date: 2017-09
Topic: Power monitoring smart outlet for a S4?
### Original post:
So I am trying to monitor my power consumption on my s4 (so i can refund my landlord on what I use running it). I tried this smart plug <link> but the second i turned on the miner it crapped out despite the 10 amp and 3600 watt listed specification (s4 is 1470w 6.3a). Does anyone know a decent way to monitor my power usage (internet connectivity an added bonus)?

### Reply 1:
You could try the TP-Link HS110 smart plug.You can monitor the usage from anywhere (integrated with their Kasa app) and start/stop it with just a click.The US version is rated @ 15 amps / 1800 watts and the EU version copes with more.I'm very happy with it, but I'm using it for applications that drain less than the S4.

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    ""hardware_name"": ""TP-Link HS110 smart plug"",
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10956,"Date: 2021-06
Topic: Review on apollo btc miner
### Original post:
First off it works!It is pointed at ck solo poolit is pulling 126 - 130 watts on the kill-a-watt meter

### Reply 1:
I will do a video and post some more later today.I like the metal case. Feels sturdy.It is very quiet.I got the plug n play modelcomes with an instruction card. I loaded ckpool for solo and as you can see with link above it works.What is nice is it automatically started to create a node which has 15 of 32 possible connections.it is synching blocks and is at block 219,989 of 685,168I suspect that my watts will drop down from 126-130 once it synchs.The gear has a nice crucial nvme.2 500gb ssd I believe this model<link> I get the node loaded I will know the true power draw. I will use a few psu's to see if watts can be lowered from the nice small quiet one that came from it.I see some easy tweaks for it. I have taller rubber feet I think I will stick them on in a few days.I have an attractive piece of tiger stripe maple to stack the unit and the psu.

### Reply 2:
spacerA very quick power estimate 127 x 24 = 3048 watts lets argue 3kwatts a dayKwatt <truncated> 05 cent power = 15 cents..... $ 4.5010 cent power = 30 cents..... $ 9.0015 cent power = 45 cents..... $13.5020 cent power = 60 cents..... $18.0025 cent power = 75 cents..... $22.5030 cent power = 90 cents..... $27.0035 cent power = 1.05 usd..... $31.50You can mine and hold with it or mine solo pool

### Reply 3:
So I had an internet issue. Not sure if it was me or optimum.Figure out how to reconnect the gear to the net and it is back running.I decided to hit stop button on miner and see what watts drop to.they go to 10-12 and this is while loading the full blockchain node.I am up to block 415,000 of 685,195I have about 82gb of chain loadedI think we will load around 220gb to fully load chain. Maybe six or eight hours.I have pretty fast net 300gb down 50gb up.On a killer pc I can load the full chain in under 5 hours.This will be slower but not that slow.So 10-12 watts just loading the chainand 126-130 watts eco mining and loading the chainI will get back with more watts.updateSo over night it bogged down.My internet like many around the USA has been terrible since covid-19 made a ton of kids and adults use pcs out of the home.I suspect I have been throttled due to the long large download.I have 30/32 connectionsI have 511,700 of 685,262 blocks and 182,12gb of the chain.2 suggestions the option for an upgraded nvme.2 ssd ie a 1tb vs the 500 gb should be given.And maybe slightly taller bigger rubber feet.<link> thoughts are maybe something like the ones above. May be betterI do have these and<rest of post truncated>

### Reply 4:
SSDs come down in price every month..we had to pay over 120 bulk back in Feb for 1TB so the extra cost to users to start at that was not worth it in my eyes. The 500GB drive will run out of space for Bitcoin somewhere at the end of 2022, at that point youll probably be able to get a 1TB drive for under 50 bucks, so its better for end users to just fill up the stock drive then upgrade for cheap down the line. Once we get the bulk of pre-orders out well probably offer a 1TB option as well in the coming months.

### Reply 5:
I would say to increase the size of the dbcache in the bitcoin.conf file to speed up the initial blockchain download. It really helps a lot. But, I don't know how much free RAM there is on the box and what if any other tweaks @jstefanop made. My unit came in yesterday, but I have been so busy at work I have not even had the time to take it out of the box -Dave

### Reply 6:
Yea its already optimized for the RAM size...fact that you can sync a full BTC blockchain in under 2 days with this is already impressive for a sub 200 dollar ""computer"", and is already way faster than what even a Pi 4 can do. You cant expect this to do it in 12 hours lol

### Reply 7:
Fan started buzzing really loud. Quickly just shut it down as I thought something had fallen into it. Turns out every screw in the outer shell was a tiny bit loose.I hand tightened all of them by maybe to a turn.Do not over tightened tight screws if yours are tight.Mine were all able to turn 90 to 180 degrees.Once I did this the loud buzzing stopped.I am still loading chain 592,000 blocks and more than 270gb.I figure six to ten more hours.So I had 2 stops on the download losing four hours. the download now is around 35-4=31 hoursmaybe I get it loaded in just about forty hours. I guess chain will be over 333gb.filling of the ssd.

### Reply 8:
Okay I bolded the answer to the chain size that you gave 395 gbfrankly I had not kept track of the size. so the ssd will be 80% filled. I will be cloning it to a bigger one down the road.Maybe I will simply run the down load again on a 1tb ssd stick.I am interested to see if it would simply start over again. Since it is a blank ssd. Would it need to be formatted etc.I am also interested in cloning the micro sd card so I can have a back up of it<rest of thread truncated>
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]"
22767,"Date: 2018-10
Topic: A quick fix for antminer S9 missing/not showing hash-board ! no skills needed :D
### Original post:
so 1 of my S9's suddenly stopped showing one of the hashing boards.i searched online, contacted Bitmain , did a dozen of re-setting , firmware changes and tens of rebooting attempts but nothing worked.so Bitmain asked me to send the miner back, and the best settlement was me sending the BAD hashing board, yet even with that offer it didn't make sense to me as the shipping cost from my country to china is kind of expensive and i just thought it was not worth it. so i was about to give up on that hashing board until something strange happened !I for some reason flushed the autofreq firmware and suddenly the missing hash board showed up.this is the name of the firmware > <truncated> can be found on bitmain website > <link> before you say it might be just my luck. i flushed back another firmware and boom ! hash board goes missing again ! still until that point i thought maybe only this particular miner that has this fix work for ! so i searched for a used S9 with a board not showing ""bought it for pretty cheap"" i tried the firmware and damn ! it worked again .I do not have any TECHNICAL or even REASONABLE explanation for this !I just wanted to share this with you all , maybe someone fi<rest of post truncated>

### Reply 1:
Got any kernal logs before and after?

### Reply 2:
didn't really save any kernel logs but this is what i sent to bitmain for the repair request for the first <truncated> = <truncated> = 0x00000000Chain[J6] has 63 asicChain[J7] has 63 asicChain[J8] has 0 asicas for now it shows the <truncated> = <truncated> = 0x00000000Chain[J6] has 63 asicChain[J7] has 63 asicChain[J8] has 63 asicso i would assume the J8 is possibly board no3 out of 3 s9s boards was the missing one. for the second miner "" image in OP it was J7 missing.but from what i recall they both showed the same info of [Jx] has 0 asic

### Reply 3:
I have two s9s with dead hashboards still on warranty, but im afraid to do this and lost all the gear..

### Reply 4:
I do not think flushing bitmain own firmware voids the asic warranty by any means , i also do not think that a firmware will harm a good running board. but again DYOR and do whatever you want at your risk . good luck

### Reply 5:
Flashing default firmware from bitmain doesn't void any warranty it is allowed to flash it but except for customized or modified firmware. And I think what happened to your antminer s9 doesn't work with firmware auto freq and I think the other firmware is incompatible that is why you get missing hashboard so auto freq firmware solved your issue. So, there is no hardware issue in your s9. How about the hashrate and temp.?Other solution for hashing board you can reflash the hashboard with ""Pickit 3"" you can find the idea from here <link>

### Reply 6:
i do not think it has anything with the firmware being incompatible as it was running fine for a while in a passive state, nothing has been changed , the hashing board just gone missing for god knows why. there is 0 hardware issues now and before , i seldom get any hw errors, temps never go pass 80c. the strange thing is, with this FW i seem to get a better hash rate on the pool side. thanks for the link, my brother has some good knowledge regarding those programming case such as PICKIT 3 , so it may be a good idea to buy broken miners for very cheap and fix them to re-sell them or use them .

### Reply 7:
Mostly, November firmware solved this issues, but sometimes doesn't work so your thread will be helpful to someone if they confused which firmware they should use. Never give up if you feel that the issue of the miner is just a software program, not a hardware issues. Because I experienced on fixing hardware directly without trying to flash it first and then it becomes broken and never solve the problem. So, do everything first in software like flashing it from old firmware to the latest firmware and flash control board with working firmware and now a new tool called PICKit 3 can solve some hashboard issue by flashing it with working hex file. Before you go to the hardware, do this 3 method first because you can save as much as many miners from being useless and revive your miner from being dead. It's the basic thing that we should do before touching any hardware because without knowing which part is broken or damaged the problem can be worst.Why not buy some broken miners and fix them for study purposes (honestly, it's a bright idea) and software program is a common issue of the ASICminer. I heard some members doing this here on the forum and fixing damaged and broken ASICminer an<rest of post truncated>

### Reply 8:
you are absolutely right, last thing one should try is hardware, in fact in many cases, resetting the setting only can fix many issues. but again this is a new field to most people , i mean the ASIC industry has very little information available online, see if you got a<rest of thread truncated>
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21366,"Date: 2017-04
Topic: bypass fan detection on antminer S9
### Original post:
I have an external cooling solution (AC squirrel cage fans) which have a higher CFM, designed for higher pressure but also run at a lower RPM. They are actually much quieter than the factory fans on the S9. Currently, the default firmware on the S9 is blocking me from being able to test these alternate cooling setups -- if it doesn' detect the fan tach signal it just stops mining. While I do understand this is important for most users, I need to override this interlock. Anybody know how? If I come up with a clever cooling solution which makes less noise I promise to share details. To be clear, I'm going to profile the thermal performance at various underclocked speeds with the default fans and then retest again with my new cooling system slowly increasing the mhz.Thanks, -3ric

### Reply 1:
<link> try something like this, except wired up for about 135Hz. Shouldn't be difficult to find a 555 that'll run off 12V. Tie the output to the tach line (usually the yellow wire) on the fan jack. If I'm remembering right, fan spec says two pulses per rotation so 135Hz means a shade over 4000RPM. 150Hz should detect as 4500RPM. The controller will think it sees a fan present and spinning fast and loud.Note that I haven't tested this in any way, it's just an idea that I think should work based on what I know about fans.

### Reply 2:
Or mount a proximity sensor or photo-cell near the blower wheel to pick up the blades as they go by. Great airflow and still have fault detection

### Reply 3:
Yes, there are several hardware hacks I could do to fake a fan pulse, but for quick testing there must be a way to disable this in software. It's a shame these devices are so closed source.

### Reply 4:
3ricj, thank you for starting this discussion. Same problem I am having.You probably can simply dismount the fans and leave them connected to the controller after having installed the cage fans to test. The controller will be fooled into thinking all is well.Sidehack, thanks for the 555 idea and basic parms. Hadn't got that far yet, so saves me some time.I am looking forward to reducing the acoustic foot print of my 4 s9 miners since said foot prints are all over my head right now (ugh).

### Reply 5:
My first attempt will be to just install little shitty fans which don't make any noise to keep the controller happy. <link> report back how well they work this weekend.

### Reply 6:
I've done a bit of searching and can't find a small, quiet squirrel cage fan that has a lower power demand. (220 CFM)Are you matching up a cage with a small motor you already have??I'd like to try this to see how the temps inside the miner do.

### Reply 7:
Changing power demand is not the point. The OP wants to reduce noise and a squirrel cage blower can be extremely quiet while delivering high airflow against sizeable back pressure. Of course most run directly off the AC power line.Think furnace blowers. One with a 1/4hp motor works out to around 300w of power and will probably push well over 1-2k CFM against the back pressure 4-6 miners would have. Since each fan on a s9 pulls a bit over 24w, that's 50w of fan power for the 1 miner. Makes using around 300w to quietly cool several miners look rather good if ya want to make shelves & ducting to do it.

### Reply 8:
Found this unit at $90, which would need some shroud work: <link> VAC 0.51 Amps rated as 40 watts, moves 275 CFM, probably pretty quiet, too, since it is made to install in metal ducting and that would not tolerate much noise at all.

### Reply 9:
Key point you missed:My emphasis on 'free air'.Why time and again must it be bought up that the densely packed configuration of miners from s7 on up ALL produce substantial resistance to airflow? You know - high back pressure aka Static Pressure? Having to push air against that back pressure is why the fans used in Ants and yes even the Avalons are so loud. It is just the nature of the beast.Free-air flow ratings of any fan/blower are useless specs for cooling miners and relying on them will always result in very poor real-load performance. Fans/blowers useful to miner cooling will specifically mention using against high back pressure and give a Static Pressure rating usually in Inches of Water or a metric version of that.

### Reply 10:
I am but a lowly, languid lemer. Not sure what your assumptions are in your responses but you seem to think I need educating. I'd appreciate a civil discussion rather than being talked down at. At least that is how you are coming across to me.

### Reply 11:
Ok, short and sweet. If someone is going to be tampering with an expensive piece of equipment then they need to have at least a basic understanding of what went into the design of said products. If not - don't mess with the innards.Learn what needs to be learned then dig in. Just picking up bits and pieces from forums is not learning. Not a bad start, just you better verify technical details<rest of thread truncated>
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11149,"Date: 2022-05
Topic: What is your solution to measuring and reporting power usage?
### Original post:
Hey everyone, I'm very new to this and trying to put together my first at home farm, I'm curious about how everyone is measuring and recording their power usage? Metered/Switched PDUs seem to be the answer I find online, but I can't find a consensus on which PDUs are the best for this use case. Is there a solution that I can look at a history graph of usage per plug? and remotely reset individual plugs? Should I also be running a surge protector before the PDU?I've got access to cheap power and looking to build a decent small farm

### Reply 1:
There are probably more IT people in the world arguing about which reporting software is better then there are people fighting over religion.Since most GOOD PDUs will let you pull data with just about any SNMP software I like RRDTOOL [ <link> ] & Cacti [ <link> ]There is an implementation of cacti called ez-cacti which I think is no longer supported but should still work but was a preconfigured setup so to make life easy.No doubt others will chime in with their favorites.-Dave

### Reply 2:
Why not use Awesomeminer to monitor the power consumption of each miner? Any PDUs should work you just need to use PDUs that support higher wattage.And take note you dont need to use power surge protector you must plug your PDUs directly to the wall to get the best power.

### Reply 3:
This software aggregates data from the PDUs? Is there a term I'm looking for when I purchase PDUs (has SNMP?) Is there a vendor that most people go with for PDUs?Just googling it looks like raptor power is one of the only vendors that is crypto focused. Their PDU can handle a 20a load per plug but how do I remotely monitor the load on those plugs? How do hosts monitor power draw to bill customers?This looks like good software, why would you suggest this over minerstat or hiveos? Do miners report power usage? I don't see anything reporting power in my miners dashboard.Would the miners reported power usage differ from actual usage from the wall?

### Reply 4:
Awesomeminer has more features and tools compared to minerstat and hiveos and I never tested minerstat except for hiveos which is also a good software that you can able to monitor miners under their website. However, Awesomeminer have more feature to monitor miners that includes daily or monthly earnings and also support antminer APIs.About report power usage I suggest you read this ""Power consumption and profitability""About the actual usage from the wall, I believe there is a slight difference because they only get the report directly from the miner dashboard through API.

### Reply 5:
If you want an accurate reasonably priced solution, this is the best I've found so far.<link> basic model just keeps the running kwh, and has a pulse output that external hardware can monitor. You can manually record the kwh and keep a log, or DIY a solution to read the pulse output (i use a raspberry pi zero). They also have more expensive options that log data to the cloud.<link>

### Reply 6:
I have the basic one. It works well.

### Reply 7:
+1 for EKM. I know my accountant recommended EKM for tax purposes to be able to accurately keep a recording. It's a popular choice with landlords who own duplexes and such with only one meter base and want to be able to ""split"" the utility bill.

### Reply 8:
Awesome Miner is the best monitoring software out there in my opinion as well.The power reading is pretty accurate, it's not 100% accurate compared to the reading on the wire itself, but it's pretty close when I checked it, unless you have perform precise measurements whereby a -+1 to 5% can send you to jail, you can really count on the software readings.The meter wndsnb posted looks pretty decent, if you want to measure more amps you can always buy some external current transformers they are pretty cheap.

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    ""hardware_name"": ""Raspberry Pi Zero"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""EKM"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""External current transformers"",
    ""hardware_is_owned"": false
  }
]"
9949,"Date: 2016-08
Topic: Antminer s4 Firmware Upgrade Question
### Original post:
I acquired two Antminer S4's from two different sources... both of them coincidentally had File system from: Fri Oct 3 18:17:17 CST 2014 (I am assuming original firmware) is there a good reason not to update to the most current firmware for this unit of: <truncated> which seems to be from 4-15-15 or are these left at original firmware for good cause?Thanks for any insight...

### Reply 1:
Are they acting up??

### Reply 2:
the one is... it fluctuates wildly on the GH/S(5s) going from 1900 gh/s down to 500 gh/s and randomly up and down every few seconds but the other is steady 2000 ghs for both.. (5s) and (avg)

### Reply 3:
I have S4 parts for sale.controller, cables and 4 blades with PCI-E No PSU<link>

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  },
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    ""hardware_name"": ""cables"",
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    ""hardware_name"": ""4 blades"",
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    ""hardware_name"": ""PCI-E"",
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15935,"Date: 2017-06
Topic: MOVED: Ho i soldi da Postzy semplicemente ""Like, View, and Share"".
### Original post:
This topic has been moved to Trashcan.<link> link spam/not in English.

",[]
23188,"Date: 2020-01
Topic: Antminer S17+ x 6 in garage setup - help
### Original post:
Hi guys, I wanted to start a tiny mining farm. I've got the correct power cables setup for covering between 5-6 miners in the garage. Due to not being able to run a lot of miners I thought I would go for the highest hash rate possible at 73th/s.The garage is empty and I'm about to replace the garage door with bricks and a soundproof door and the single pane glass window with double glazing. The roof has been replaced and is water tight now. I was reading about setups and it appears possibly building a shed 6' wide x 3' deep x 7' high with a wood between the units fans - to create the cool aisle and hot aisle. I would then need an extractor fan (50cm?) to pull heat out and I assuming need to put a hole in the wall to fan it outside. I need an air filter to draw air in (any recommendations?). I would put the s17+ on wire racks. Could someone help with a bit more info or tips on a build. I am only making assumptions. I started off with 500 in mind but after learning about amps and volts... realised this wasn't possible without a power station haha.Thanks everyone, if I've been stupid please be gentle.

### Reply 1:
It's in the U.K. the calculations aren't great but to be honest, I just want to see if I could get it all setup. I would maybe at a later date move to GPU and altcoin. But I just don't want to burn down my garage.Each miner is 2920w so is using 9,928 btu ? so 6 would be hitting around 60,000 BTU?

### Reply 2:
I haven't bought the S17+, so you recommend the S17 pro's - Is this to save money on electric? Or another reason? I guess I can run it on low if the noise or heat gets too much?the pro isn't itReference power on wall, Watt1296 / 2212 / 2720 confused about the three speed s17 pro7 x 2400 = 16800 watts7 x 2200 = 15400 watts7 x 1600 =. 11200 watts

### Reply 3:
ah ok sorry I wasn't being funny just wanted to check my understanding. OK that makes sense to me. Allows flexibility for more conditions.OK so assume 5-6 S17 Pro's - 6 x 1296 = 7,776 w6 x 2212 = 13,272 w6 x 2720 = 16,320 wWith regards to the heat issue... would you recommend a unit being built. The garage I will board with sound proofing. Do I need an extractor fan to the outside? A filter bringing air into the unit. Make it air tight to force the filtered air in and have the extractor fan high up to take the heat out. Putting them on wire racks with hot side and cool side - do I need a board with holes in it to focus the fans to push the heat one side. How big should I make the unit?

### Reply 4:
Electrician agrees its all setup. Got a carpenter who can build the unit. Stick the fans in the unit and vent to the outside. The filters can passively draw air from garage surroundings. Thanks for the adviceHow do you link the fans on the unit to the wall? Surely any tubing would get really hot? Do I need to put a board down the middle so fans from the s17 are all in one side?

### Reply 5:
No, you should go the other way around, especially when ""beginning"" and your ambient conditions are not clear. That is, use the most power saving feature you can, lower their rate so they can be efficient in power use and lower temperature, at least until you have everything perfectly set up.You underestimate the amount of air a single S17 needs, let alone 6!!! I think maybe 300~400 cfm per unit, i have yet to know what's the exact figure for S17s, since i only remember the S9's 250cfm.For filters i think those used for central ac units, the ones you can take out and clean with water, they are very large so don't be surprised. Yes, when thinking fans, and ducts, think large, as in wall sized large...Hmm since you plan to remove the door, that could be the air intake, as that would probably be about the right size. Or maybe use those bricks with holes?Wood is.. hmm i don't think very safe. Grounded metal should be preferred in my opinion.If you think things are starting to feel ""industrial"", it is because that's what those asic miners really are. Its not just the power, its also the ventilation. Lone gone are the days of the humble R4 (or the S7LN), mine is still running in an actua<rest of post truncated>

### Reply 6:
To be gentle you messed up terribly.the s17+ is not able to run at lower speeds.The s17 pro has three <truncated> s17 pro is the most efficient miner when set to low speed of 43thMy advice is sell your six s17+ units and buy seven s17 pros.Good luck here is another way to calculate the problem.6 x 3000 = 18000 watts which is over 60000 btu.three speed s17 pro7 x 2400 = 16800 watts7 x 2200 = 15400 watts7 x 1600 =. 11200 watts

### Reply 7:
Off the top of my head I put those numbers down. I have so mnay units of different types I don't always remember every number.the point I am bringing is you have a small mine in a small area.For the s17'stop power is say 2700 for about 57th 47 watts a th this is the one I don't remember for wattsmiddle power is about 2225 for 53<rest of thread truncated>
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16703,"Date: 2011-06
Topic: 3rd 5970 help needed
### Original post:
I have Linuxcoin as my os.Originally I had 2 X5970 and one 5870. All was working as it should, 5870 was attached to the monitor.I removed the 5870 and replaced it with another 5970. I see the bootup options, but once booted, the screen is blank. The new 5970 ha the monitor plugged in.I am not using crossfire.Any suggestions?

### Reply 1:
First I'd check power. make sure you are not exceeding your PSU.Also have you tried having your monitor plugged into each card, I believe it default to a different card or possible your on board graphics if you remove your primary card.

### Reply 2:
If you hit Ctrl-Alt-F1, you should get a terminal. Log in, and run:aticonfig -f --initial --adapter=all

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    ""hardware_name"": ""X5970"",
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  },
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    ""hardware_name"": ""5870"",
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""monitor"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""on board graphics"",
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]"
10261,"Date: 2017-04
Topic: [ANN] Sfards:SF100, the first 28nm Dual-Mode Miner is accepting pre-order now
### Original post:
Update 2/11/2015SF100, the first 28nm Dual-Mode Miner is accepting pre-order nowSfards, the only mining company has received venture capital investment, now announces that its Sha-256 and Script dual mining chip, using FD-SOI technology, is successfully taped-out and has been massively produced in the second quarter of 2015. Its the only 28nm multi-algorithm chip, supports both Bitcoin and Litecoin (or other crypto currency using script). Our SF100 miner (with 24 SF3301 chips) has already accomplished scale deployment and sales to big miners and investors. It achieves 1.7THS BTC hashing power (with 720w power consumption), 54MHS LTC (with 250w, power consumption), in total 960w power consumption at wall (based on test with 90% conversion rate power supply unit).The Script hashing power of SF3301 is one-of-the-kind in global market. Its litecoin return is 3-5 times of its bitcoin return. Using SF100, Investors can have return on two coins at the same time, the feature is very beneficial, especially when litecoin hashing power increasing rate is very low and stable, and next halving is going to be 4 years later, which means by investing SF100, miners and have shorter ROI and longer s<rest of post truncated>

### Reply 1:
Update 2/11/2015SF100, the first 28nm Dual-Mode Miner is accepting pre-order nowSfards, the only mining company has received venture capital investment, now announces that its Sha-256 and Script dual mining chip, using FD-SOI technology, is successfully taped-out and has been massively produced in the second quarter of 2015. Its the only 28nm multi-algorithm chip, supports both Bitcoin and Litecoin (or other crypto currency using script). Our SF100 miner (with 24 SF3301 chips) has already accomplished scale deployment and sales to big miners and investors. It achieves 1.7THS BTC hashing power (with 720w power consumption), 54MHS LTC (with 250w, power consumption), in total 960w power consumption at wall (based on test with 90% conversion rate power supply unit).The Script hashing power of SF3301 is one-of-the-kind in global market. Its litecoin return is 3-5 times of its bitcoin return. Using SF100, Investors can have return on two coins at the same time, the feature is very beneficial, especially when litecoin hashing power increasing rate is very low and stable, and next halving is going to be 4 years later, which means by investing SF100, miners and have shorter ROI and longer s<rest of post truncated>

### Reply 2:
Wow surprised and happy. Was not expecting to see this, welcome back to the forum.Do you know what price next batch will be and timeline? Also will it be a bigger batch for customers?

### Reply 3:
Interesting that there was a bunch of time with no updates---

### Reply 4:
I'm just happy that they might be coming back. I want to scrypt mine and they really are only game in town with a newer chip. I need to know price as it needs to make sense, and time frame.But it looks like my guess of internal mining might have been right that looks like a lot of SF100's in a data center somewhere.

### Reply 5:
Unit price and pre-order information please.

### Reply 6:
I think ITOP has been selling them for about $1150 used...may be the best bet.

### Reply 7:
It needs to be lower then that I think after having. ITOP paid original 1200 I think it was from factory I'm guessing. So they will want to keep it around that.I'm hoping SFards will lower price considering having of LTC. But time will tell.

### Reply 8:
*yawn*Still nothing to see here.

### Reply 9:
True! How impersonal after months of nothing but some questions answered non directly. Weird to say the least. Seems home miners aren't welcomed here.

### Reply 10:
If the price is not high (and 1150 is very high), i want but 3 or 4, perphaps more...

### Reply 11:
We are sorry we didn't update the information for a long time.Due to the uncertainty of crypto currency industry, to lower down the risk, we adjusted our strategy. We suspended our retail market, and focus on our VIP customers and the data center setup by ourselves. Because retail market need a bigger team to provide marketing, sales, customer service and technical support etc. It means the higher operating costs.We are very happy to announce that our new batch will be ready at the end of Nov. The most machines are already booked out, only left very limit amount of machines. We suspend the plan to add machines in our farm, and now open the remaining batch for sale, the price will be $1150 for each, and only accept 100+ order. it will be ready to ship at the end of Nov.P.S.We already added new wafer order, now we accept the booking for chips and miners.SF3301: qty:2000+ , $25 per chip, the greater the number of the more discount(We already open source our miner spec, please find it from <link> same hashrate, new model): $1050 per miner, qty from 100+Shipping da<rest of thread truncated>
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14017,"Date: 2011-05
Topic: Mining at 7566.57 MH/s... should I go solo, etc?
### Original post:
Hi All,I am currently mining >7500 MH/s (on a pool) and would like to know if this kind of setup is better solo or with certain pools. I plan on expanding this to >10000MH/s by the end of next week.Thank You,Paul

### Reply 1:
you'll average a block every 29 hours.why on earth wouldn't you mine solo?

### Reply 2:
sure. ""only"" ~50 bigger farm and you can get serious Hardware utilisation, finally.

### Reply 3:
Holy christ what kind of hardware you have dude?

### Reply 4:
If you really have 7.5Ghash/sec there's little point to being in a public pool.If you mistyped, and have 7.5Mhash/sec, then you shouldn't be mining at all.

### Reply 5:
Nope. <truncated> = a block every ~38 hours.

### Reply 6:
< shrug >if the (old) Bitcoin Calculator is wrong, then it's wrong. but that's what it says for 10 Gh/s.

### Reply 7:
Hi I'm new to bitcoin and have many things to learn, may I know how you guys come up with these figures ? I'll soon be expanding my mining capacity too and would like to know at which point in the future should I consider mining solo and why.

### Reply 8:
try these two:<link> mostly, just read the mining sub-forum. every day. over and over...

### Reply 9:
We are both right. I quoted numbers for 7567 Mh/s. For 10 Gh/s it is indeed ~29 hours.

### Reply 10:
ah, of course. sorry - my mind was busy being boggled by the idea of 10Gh/s in my living room...

### Reply 11:
By definition, at difficulty 1 you must hash an average of ~4 billion blocks (exactly 2**32) to solve one.So at the current difficulty of 244139, you have hash 2**32*244139 blocks. Just divide this by you hashing rate to find how long it would take to solve one.

### Reply 12:
No, it's really 7500MH/s. I am running 6x machines with 2x 6990s in each machine and I plan on expanding to 4 more machines next week. The hard part is keeping them cool enough - so I am moving them to a facility that has a good A/C and enough power (each machine takes ~10A @ 110V).I will try solo mining since I am only at ~15BTC/24 hour period.Thank You,Paul

### Reply 13:
even minus 2% for slush's pool, with 7.5 Gh/s running pooled, you should be somewhere around 30BTC/day...

### Reply 14:
Hmm... I will need to recalc this then. Any difference between slush/deepbit/etc? I will need to run the system for another 24-48 hours to get a better baseline.Thank You,Paul

### Reply 15:
with 12 6990s, you should be getting about 9 Gh/s already - that's at 750 Mh/s each.what are your boxes made out of? OS, mining program, etc...

### Reply 16:
I am on BIOS position #2 (standard) due to heat concerns and crashing - so I am getting around 300MH/s per GPU (4 GPUs/PC * 6 = 7200MH/s). One of my machines is watercooled and I have that one set fairly high (~400MH/s). I am using an Asus Mboard w/ 2x PCIe, AMD Phenom x4, 1GB RAM, 32GB HDD, 1600W PSU, 2x XFX 6990s, and Windows 7 (64 bit). The water cooled PC is using Koolance blocks and reservoir and has a 4x PCIe MBoard (it will have 4x cards in it soon running Linux, waiting on other 2x cards for this one - the other 8 cards for are in the garage waiting to be assembled).I am using GUIMINER since I needed something quick to test and play with.Quick question - do you need the crossfire cable connected between the 2x cards? Any advantage to this vs not? (Going to bed soon - will check posts in morning)Thank You,Paul

### Reply 17:
Question - why does common concensus seem to be that he should go and mine solo wiht 7.5 Ghash/sec?It's not like his volatility doesn't lessen a ton like most of the rest of us, and a even a 2% fee (there are several with lesser fees) isn't a huge cut. Why wouldn't he want to mine in a pool?

### Reply 18:
because the main reason to mine a pool is to even out variability.with that kind of Gigahashage, he has no variability to speak of.

### Reply 19:
Wow... You have 12 6990's and only get 7.5ghash/s?? Holy crap dude, and they are overheating? And you're on a pool?Seems like every day someone rushes headstrong into mining without thinking things through or fine tuning their operation.My other observation around this forum is that a lot of people really don't know much about hardware, cooling, systems and that general area. Even the smartest bitcoiner may not be proficient in this area.I'd suggest browsing some PC forums to learn in this area. Overclock.net and xtremesystems are probably some of the better places. *Yes I know OCN is shit with the retarded ass moderators, BUT there is still a lot of information there by a lot of great MEMBERS (not moderators).

### Reply 20:
Even big pools like Slush's pool still experience variance. BTCGuild has grown rapidly to > 125 Ghash/sec and it still experiences rounds ranging from 11 seconds to 12 hours.Why would a 7.5 Ghash/sec user not benefit from reducing his variance like the rest of us? He'll still experience a fair amount of variance?

### Reply 21:
@Clavulanic: I am run<rest of thread truncated>
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4144,"Date: 2012-08
Topic: Introducing the ModMiner Quad 800Mhash @ 40 Watts http://www.BTCFPGA.com
### Original post:
You guys have any plans on making another backplane supporting more FPGAs? I like using those connectors for the FPGA boards and having the backplane power the FPGAs remotely.

### Reply 1:
So when is the 8x version coming out that uses a PCI-E 6 for the power plug.Edit: actually, since this is all modular, why not a 16x that uses a PCI-E 8, it would really reduce wiring overhead and other bullshit.

### Reply 2:
Power distribution on such a board isn't exactly trivial. But one should probably be able to just clone the board and connect the power input to all clones in parallel, keeping one set of voltage regulators per four FPGAs.Oh, and one would probably need a more beefy controller for that, to control 16 FPGAs over a single USB port.

### Reply 3:
There are plans on making larger backplanes. We also plan on making the FPGA cards compatible to use on all of our backplane models. As TheSeven stated power distribution on such a board isn't exactly trivial and a lot beefier microcontroller would be needed so you probably wont see a 16x backplane for awhile. You may see a 8x board by June or July though.

### Reply 4:
Dang, there' sjust something about this design that speaks to me. It's so simple, yet elegant. Bravo. Would you post some more pics, without the heatsinks on and such? What is the potential for an overclock if one were to use liquid cooling?

### Reply 5:
You guys should add more pics. Higher quality that is. Thanks

### Reply 6:
Great to see another solution with an upgradable power supply (i.e. not soldered to the same board as the expensive FPGA). You'll be glad you did this.

### Reply 7:
I believe this is the first truly modular system that has been brought to market. I am glad to see it and look forward to the 8x backplate. Well done.

### Reply 8:
... other than <link> to see it catching on!

### Reply 9:
Is there no way to match BFL's 800Mhash @ $600 ?

### Reply 10:
I didn't think you had a packaged set you were selling that was completely assembled.

### Reply 11:
Watching with interest.

### Reply 12:
BFL seems to have a secret and very cheap source of usually highly expensive chips. The chips that they use usually cost $2000-4000 each (and each single contains two of them).

### Reply 13:
<link>

### Reply 14:
Not with Spartan 6....Wonder if they're giving people new chips or used? I don't suppose they would tell us.

### Reply 15:
Really loving the modular design, looks good. Makes I'm sure a lot of people feel at ease if a part needs to be replaced it doesn't mean getting the soldering gun out and potentially messing up it more So these really run cool enough and efficient with no fan?Sorry if it sounds like a newbie question, but I don't often see FPGA without them.

### Reply 16:
It's not a newbie question =] The pictures are a bit misleading....The board in the pics is one of our prototype boards(REV 2).The boards that will be shipped are REV4 and have a lot of improvements. I've added 2 more fan headers for a total of 4. The FPGA cards are a bit bigger and will have holes at 54.8mm distance to allow for most aftermarket North bridge coolers and most aftermarket GPU coolers made for older GPU's. The FPGA cards will come stock with a GPU cooler that should dissipate around 25 watts of heat this is a lil overkill considering we only need to dissipate around 10 watts but everyones FPGAs will stay good and cool =] each GPU cooler includes a cylindrical heatsink and a 40-50mm fan. Heres a example <link> difference between the old REV2 and REV4 is the USB Interface chip. In REV2 we used the same one as the X6500 uses. In REV4 we've changed this to a ARM Cortex M3 72 MHz microcontroller that will allow firmware updating for the USB interface.I will post some new pictures in a few days.... I've just been really busy getting orders together and sourcing parts.

### Reply 17:
How many watts will the new boards with fans use?

### Reply 18:
Each fan should add around 0.6 - 1.2 watt depending on what heatsink/fan combination we decide on using

### Reply 19:
<link> sure if everyone has seen the profit evaluation I did on FPGAs yet.

### Reply 20:
BFL-Singles may even be using second-hand used chips explaining there six month only warranty. Also I've thought about green electricity for Red Star Mining. I can get 100% green sourced renewable electricity supplied for around 0.134kWh.

### Reply 21:
a) Holy shit, thats 0.2166 USD kwh. You are getting raped over there.b) Thats not quite the same as generating your own power and selling the excess to make your investors more money.

### Reply 22:
No that price is for 100% green sourced renewable electricity. I'm currently paying 0.11125 kWh (and yes there is cheaper suppliers) and yes electricity in the UK is generally dearer than the US tho cheaper then many places in Europe and elsewhere. In running the Modminer development board I<rest of thread truncated>
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    ""hardware_name"": ""USB port"",
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    ""hardware_name"": ""GPU cooler"",
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    ""hardware_name"": ""North bridge coolers"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""aftermarket GPU coolers"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""prototype boards (REV 2)"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""REV4 boards"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""ARM Cortex M3 72 MHz microcontroller"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""X6500"",
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22499,"Date: 2018-03
Topic: Bitmain PSU Power Supply to power an Avalon 741
### Original post:
Hi has anyone used the BITMAIN APW3++ 1600W DC 12V PSU Power Supply to power an Avalon 741, any issues?

### Reply 1:
Yes I have done that.No issues, why would there be any? You think it detects that it is an Avalon and destroys it?

### Reply 2:
Thanks for your reply, I guess I'm being overtly cautious. So I see you are a fan of SciFi like I am too Don't be giving Bitmain ideas!

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11875,"Date: 2012-04
Topic: Please help donate 107 BTC for CGMINER support for x6500 fpga(9 still needed)
### Original post:
I'm doing ztex support on cgminer, and I can certainly do x6500 too if there is still a need for this.

### Reply 1:
how many left now hashking? guess i'll supply the rest

### Reply 2:
Well - since it is ckolivas' cgminer and also since you might be able to convince him ...Try one last time and see if he will do it - even if it takes him a while - I still think it would be best if he had an FPGA device(you'll need to ship it to <truncated> after the discussion that's going on in the cgminer thread at the moment ...

### Reply 3:
Well I said I could do it, but the timeframe would likely be longer than someone else doing it.

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11033,"Date: 2021-11
Topic: Custom USB miner
### Original post:
Hello,If I produce a custom USB miner, who would want to buy it? It has 500 gh/s at 20 watt. It will be very cheap.I can sell with eBay or face to face shopping (I am live in Turkey).

### Reply 1:
GekkoScience is already making one: <link> the question would be how cheap? There is already an established vendor so you would have to prove yourself and probably undercut their price a bit.But there will always be people who want stick miners to use / play with.No idea how large the market is in general, but if you make a good product and get it in the hands of some people I'm sure you could sell a bunch.i think your biggest obstacle is going to be the fact that you are a new user and getting people to trust you enough to send you money. But if you are selling on eBay that should eliminate that. part of it.-Dave

### Reply 2:
I will not demand money from anyone. I will try to sell on an eBay-style site. So people can trust me with this way. Miner cost will be 100-150$ .

### Reply 3:
I advise you'd send some few first items to known and reputed miners, so they can prove that the miners actually mine as expected. This should grow your reputation.Selling in batches and handling the funds through reputed escrows may also be a good idea, since you are newbie / nobody knows you yet.Edit: if you sell on eBay or similar established store, then you can ignore my second line.

### Reply 4:
yes maybe you can start with share some picture, specification and benchmark how well your usb miner work the requirements to run the miner etc and let the community know

### Reply 5:
I will post photos as soon as possible.

### Reply 6:
.. and please don't be making rip off copies of sidehack's work like others have done in the past ...

### Reply 7:
RockMiner was selling a clone of one of my sticks so blatantly a ripoff that the publicity shots were my device spray-painted black and the shiny parts photoshopped back in.TTBit ripped off of my work, botched the design into a fire hazard in three separate ways, then built it with grey-market chips.Please don't do that.

### Reply 8:
To be fair TTBit ripped off several peoples stick miners. They made clones for SHA & Scrypt & X11 from a bunch of different people. But lets see what the OP comes up with. Could be something interesting. -Dave

### Reply 9:
I wouldn't call it fair

### Reply 10:
yeah dave it is like saying to be fair gov coumo grabbed your wifes tits and my wifes tits.to all else this is a new york state reference.kano is right TtBit was an asshole and whether he did it to everyone or just sidehack he was an a hole none the less.its why the internet sucks as i do not think dave was defending a p o s like TTBit.it likely was meant to be the pos ripped off every one.

### Reply 11:
Yeah, bad choice of words on my part. I was just pointing out (poorly) that sidehack was not the only one that TTBit ripped off.Drifting a bit here, but it does make you wonder how much counterfeit stuff is out there they we don't know about.If someone make a stick like sidehacks or any of the others but instead of customizing it made an exact clone how many could they sell at close to full price.-DaveAnd if anyone was wondering about the gov coumo comment I sent this to phil a few weeka ago: <link>

### Reply 12:
Yeah if they make a really good copy and sell on ebay at a markup they could get away with it.

### Reply 13:
Oh yeah also TTBit copied the product/serial config off one of my sticks and cloned it across all of theirs so they all came up with the same serial number. What a joker.

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17005,"Date: 2012-01
Topic: is there any free windows os??
### Original post:
I just want to know is there a free microsoft windows os?

### Reply 1:
Yes and no.You can get a ""free"" copy with the purchases of some OEM systems. But that's about it.

### Reply 2:
Only if you pirate it. Otherwise, it's always paid for, either hidden in the cost of a full system or as a standalone retail copy.

### Reply 3:
Free (as in freedom) Windows OS, though not Microsoft: <link>

### Reply 4:
then what is this?? <link> think this is a free windows xp

### Reply 5:
That is the Windows XP Service Pack 2, it's used to update an existing installation of Windows XP.

### Reply 6:
Windows 95/98 keys should be cheap nowadays.

### Reply 7:
gl finding drivers.

### Reply 8:
No matter how often you try, humor is so often lost on the internet. Just the concept of something free from M$ is a joke.

### Reply 9:
Not really... if it helps them take over a market, they are quite willing to give away things for free a la IE vs Netscape.

### Reply 10:
Yes they do have free products (IE, Defender, Live), but without a *paid* windows OS you can't use them, so it's not quite the same comparison.

### Reply 11:
yes ftw free server r2 <link> wind 7 <link>

### Reply 12:
It's hard to tell sometimes. I've seen people make dumber statements then that and they are not joking. So I just assume they mean what they are talking about.

### Reply 13:
got some unused windows nt 4 workstation keys lying around. pm me if interested

### Reply 14:
Only for students if I'm not wrong, which brings me back to

### Reply 15:
No there is not. But there is ReactOS, and WINE under Linux.

### Reply 16:
There is one free version of windows(sorta). Microsoft hyper v server 2008. It has no explorer and may not let you install drivers for a video card i have not tried. however you can load pleanty of vm's on top of it if you're willing to work through a command line.<link>

### Reply 17:
Yeah that's the only one. There was dude hangin around that got it working for mining IIRC. Short of that, you can download 7 Enterprise trial and use it for 90 days. Once your 90 days are up, reinstall.<link>

### Reply 18:
I have a ""new in the box, still shrinkwrapped"" Windows 95 upgrade. found it in the server closet of a company i helped clear out.<link>

### Reply 19:
IIRC, you can't use that unless the base system already has MSDOS or Win 3.1 or something?

### Reply 20:
lol free codes is this even leagal?? <link>

### Reply 21:
Technically no. But chances are those codes don't work already.

### Reply 22:
Knowledge is everything Is Windows not free ??

### Reply 23:
Here is a link to a free version of Windows 7 Enterprise x64:<link> for up to 6 months, then you reinstall for another 6 months. All legal.EDIT:Looks like it can be rearmed for longer than 700+ days<link>

### Reply 24:
Protip: ubuntu! ""Ubuntu is a fast, secure and easy-to-use operating system used by millions of people around the world."" And you could aways use LinuxCoin (A lightweight Debian based OS with everything ready to go.) --> <link>

### Reply 25:
Some guy is using HyperV from MS for mining rigs.Or you can also use Windows Server 2008 R2 with SP1 free for 180 daysIf you like experiments, you can also try ReactOS. It's free, small, fast and easy, but it's in alpha state forever.But I recomend some linux distribution (for example ubuntu) with smartcoin

### Reply 26:
i wouldnt switch to ubuntu used to windows codingis react OS buggy

### Reply 27:
I have tried ReactOS in VirtualBox year ago and it was unusable. However, situation may have changed. Stability may vary between VBox and real hardware... you have to try yourself, installation is really fast.

### Reply 28:
il do it prob l8r

### Reply 29:
Anyone know a good guide for installing this on a machine that already has Ubuntu on it? (to dual boot)

### Reply 30:
Most of the guides for dual boot, mention that windows has to go on first, and then Linux. But maybe some Linux gurus around here might be able to help.

### Reply 31:
You just have to go to the command line as administrator and do the slmgr -rearm when it says that its expired.

### Reply 32:
<link>

### Reply 33:
Thanks! Gonna try this tomorrow.

### Reply 34:
Free windows doesn't exist unless you steal it. Try linux. It's nice and free.

### Reply 35:
ReactOS is free and very usable. I fortunately didn't have to install windows on any machine for the last 6 years, but do follow ReactOS, in case I am forced to develop for Windows at gun point.

### Reply 36:
Ubuntu is a pretty friendly distro for windows users. However, setting it up to mine may be a challenge if you are very new to linux.

### Reply 37:
It does exist, you are ignorant on the topic. And it doesn't require you to steal it.Not saying linux isn't nice, just has a steep learning curve.

### Reply 38:
Free trial != FreeYou should call Microsoft and ask them for information on their ""Free Windows"". Then you can trot back here and update<rest of thread truncated>
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23319,"Date: 2020-08
Topic: Need some advice on cooling in extreme heat (Kuwait)
### Original post:
Hey All,I'm working on setting up around 100 S19 Pro Antiminers and am scratching my head about how to cool 330 kW. Also, I've calculated my miners would move around 25,000 CFM. Do I need to provide equivalent cool air? Here's the issue: my space is super small. The dimensions are approximately 9m (h) * 5m (l) * 4.5m (h) and I've designed racks to be in a sort of shape like this |_| where hot air will be separated by a divider.What do you guys reckon I need? Evap coolers seem like a good option, but a nightmare to regulate the humidity.Would appreciate input, thank you!

### Reply 1:
so can you clarify the dimensions as 9m (h) * 5m (l) * 4.5m (h) is wrong you are missing 1 w and have 2 h's

### Reply 2:
I am sure it can't be 9 meters high, so it's 9m for width, 5m for long and 4.5m for height, Kuwait has an extremely hot climate, above 40c/104f is pretty average around noon, that is a ton of heat he needs to get rid off.I would stay away from evaporative cooling because the humidity it generates is more harmful than the heat on those miners, I can't give you a detailed advice, but for a 300kva/240kw worth of mining gears we currently have 19 8000m3/h aka 4708cfm fans, 10 for exhaust and 9 for intake, they are moving a ton of air and the miners are doing just fine even in extremely hot days, all gears are set to manual fixed speed of 100% (5000-6000rpms), and of course, no overclocking, in fact a few them are underclocked during the summer.You could use that as a reference, but none of the above was based on scientific facts, it was simply trial and error which eventually worked fine.

### Reply 3:
I believe the middle underscore _ means the wall/separator whereby the miner will go through it, just like the average set-up most of us use to isolate the miner's intake from the heat.He sure does, with only 5 meters in width there isn't enough room for the heat to sit in before crossing back to the cold section, and thus the exhaust will need a lot of work, I would use only shutters and fans and no walls.The hot air wall would look something likeshutters - fan - shutters - fan - shutters - fan - shutters - fanfan - shutters - fan - shutters - fan - shutters - fan -shuttersThis will result in a very good air extraction and if you haven't build the wall yet, it might even cost you less, all you need is galvanized steel pole tied vertically and horizontally creating squares/rectangles to hold the fans and the vents/shutters.

### Reply 4:
not sure what this meansl _ l but he will need very good separation of hot from cold.read this thread<link> photos are from the thread above look at the hot aisle below look at the cold aisle below note the use of foam boards<link> separate hot and cold aisle a must in a tiny space.

### Reply 5:
9m (l) * 5m (w) * 4.5m (h) Sorry, typo! Yes, so the room is 9m long and 5m high.Thank you, I'll check this out.Exactly. So we decided to use a ton of wall and ceiling exhaust fans that move around 5k CFM. They are shuttered and will be direct air directly outside. My only concern now is providing the miners with enough cool air. Since we're going to be moving at least ~100k CFM of air OUT of the room...shouldn't we provide the equivalent in cool air?

### Reply 6:
okay if the exhaust fans pull 5000 cfm you will need intake fans of 4.5 to 5.5 cfm.

### Reply 7:
Without a doubt, the amount of air you need to force into the farm doesn't have to be equivalent, remember that the miners themselves are pulling air inside assuming the cold side of the farm isn't 100% sealed, but this doesn't mean you can get away with a few holes in the cold side wall, you need intake fans.We do 9 in and 10 out, so 80,000m3/h for exhaust and 72,000 m3/h for intake, I believe you could do 1:1 ratio assuming you have vents on the hot side of the farm but not in the cold side.

### Reply 8:
That helps immensely! Thank you so much. We'll aim for a 1:1 ratio. Looking at evap coolers now

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14444,"Date: 2011-08
Topic: It's time for miners to go on STRIKE
### Original post:
Competition is driving down our wages and raising our working hours, I've had enough. My children couldn't afford to eat today, my youngest has dynesty and we can't afford medicine for. And while my family starves, we're forced to worker ever-increasing hours in dangerous conditions. It's time to STRIKE.Our demands:1. Fair wages to all bitcoin miners.2. More safety regulations3. Limited working hours4. Weekends and holidays5. Pension scheme6. Unions7. Company carUntil then my computer is turned off. proof

### Reply 1:
I think alot of people are thinking of bitcoins in a different manner than what was intended (IMO). Isn't the idea to have an alternative, de-regulated currency that's 'free' to trade?If your mining for Profit in USD that kind of defeats the purpose. I got into bitcoins around march. I've mined. I've bought stuff. I've sold stuff. Only once did I ever 'sell' my coins. And that was really to just see how the exchange worked. I'll continue to mine albeit I'm in no way a power house, even if I can't make a profit in my countries denominated currency. As long as bitcoins aren't a 'dead' idea I'll continue to mine 'at a lose' (I live in FL and it's hot as shit here in the summer) and keep my client running for that extra node. Hopefully one day bitcoins will become the norm and i can anonymously give funding to ideas/endeavors without worry of recourse. And not pay a crazy percent for transactions. ( i think last year I donated over 1000$ to paypal for fees for something that in no way should cost that much).

### Reply 2:
This is obviously a joke -- or the OP was drunk.Maybe both!

### Reply 3:
Not sure what the point of this thread is. Only a select few miners actually support their entire income via btc mining. Go ahead though, turn your rig off and see if I (or anyone else) cares.

### Reply 4:
Fair wages to all miners?There are only so many blocks being generated at a constant rate, and with more people mining it has to be split across everyone

### Reply 5:
dynesty huh? did you mean dysentery? ps: fail

### Reply 6:
Communist!

### Reply 7:
you want all that? become a coal miner. forget bitcoin

### Reply 8:
it's awesome JOKE thank you for make smile!

### Reply 9:
Communists.

### Reply 10:
Yeah, the man is taking away my right to sit on my ass with some computer hardware and make a comfortable living!

### Reply 11:
SocialismOne of the consequences of such notions as ""entitlements"" is that people who have contributed nothing to society feel that society owes them something, apparently just for being nice enough to grace us with their presence.~Thomas Sowell

### Reply 12:
Wow, some of you guys wouldn't know a joke if it hit you in the balls.

### Reply 13:
I got hit in the balls once. And let me tell you, it wasn't funny!

### Reply 14:
8. Less mining, more fapping!

### Reply 15:
No joke.

### Reply 16:
Communism would be no wages. Fair-wages is an oximoron in communism, as wages can never be fair for a comunist.

### Reply 17:
saw a guy making like 50-100 BTC a day back when it first started :O he sold like 6k of them when they were at like $30 a piece :p... now thats some serious bank @OPthanks for the good laugh

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12112,"Date: 2012-11
Topic: CGMINER GPU FPGA overc monit fanspd RPC stratum linux/windows/osx/mip/r-pi 2.9.3
### Original post:
cut/paste ...2.9.3An Xubuntu 11.04 x86_64 executable is in my github downloads called <truncated> also works on Fedora 16 and 17)For anyone who didn't realise, it's just the executable file to put in place of 'cgminer'Nothing else needs changingFirst get and extract the full binary release from ckolivas and then copy my file in place of 'cgminer'No problems so far on my '2xGPU' or 'BFL+ICA' (20 minutes + 3 LP's so far) GPU's on solo and BFL+ICA (1.6GH/s) on EMC with GBT(MMQ is doing new code testing)The same configure options as cvolivas' binary versionIn case anyone was <truncated> -W -Wall"" ./autogen.sh --enable-icarus --enable-bitforce --enable-ztex --enable-modminer --enable-scryptmake cleanmake(and yes I made a 2.9.2a but deleted it and the post)

### Reply 1:
Neither the balance nor load balance strategies seem to work when your mining on a stratum server as your primary. I've noticed this on all of the stratum enabled CGMiner's so far.Sam

### Reply 2:
Noted.

### Reply 3:
2.9.3 seems too run great for me thanks allot

### Reply 4:
You're welcome. Thanks for the feedback

### Reply 5:
If ppl are looking for FPGAs, I have 2 Cairnsmore for sale. They crunch 880MHs @ 80W. [WTS] add in the market place. I am moving over to LTC/gaming rigs were FPGA is not useful.

### Reply 6:
Send a free one to ckolivas to see if you can get him more interested in FPGAs before the dev ASICs arrive He is (and I am) in the same country as you, so postage isn't much

### Reply 7:
Hi.Small reminder: ""Q:"" is still very wrong.Code: cgminer version 2.9.3 - Started: [2012-11-12 <truncated> (avg):14.63Mh/s | Q:4 A:31 R:6 HW:0 E:775% U:0.2/mTQ: 0 ST: 1 SS: 0 DW: 3 NB: 21 LW: 2774 GF: 0 RF: 0 WU: 0.2Connected to rav3n.dtdns.net with LP as user toy.gpuBlock: <truncated> Started: [14:07:12] Best share: <truncated> management [G]PU management [S]ettings [D]isplay options [Q]uitGPU 0: 55.0C 85% | 14.37M/14.63Mh/s | A:31 R:6 HW:0 U:0.16/m I: <truncated> 14:17:12] LONGPOLL from pool 0 requested work restart[2012-11-12 14:17:23] LONGPOLL from pool 0 requested work restart[2012-11-12 14:17:24] LONGPOLL from pool 0 requested work restart[2012-11-12 14:17:32] LONGPOLL from pool 0 requested work restartIt is p2pool, so longpool every 10sec, 21 new blocks in mean time but Q is only 4 and E is hitting roof on this small MH/s

### Reply 8:
Don't know what's wrong with that. Seems to me to be a good thing if P2pool is using rolltime.But I have a question, why is P2pool sending a LP every 10 seconds?Sorry to be off topic, again, but this seems to be a huge waste of work.

### Reply 9:
1. Even if it is using rolltime Q should be at lease eqal to NB (in 1000% it is different work)2. Read about p2pool we are mining payuout blockchain which have 10sec blocks.3. Waste of work only if miner config is wrong or you have FPGA that cant handle quick longpools. Works fine on all GPUs.

### Reply 10:
Ah, will do,Thanks,Sam

### Reply 11:
Someone please tell me I'm not the only one that haves CGMiner crashed when internet connection is down. As soon as I unplug my ethernet cable, cgminer crashes. Turn off ADSL modem, CGMiner crashes.

### Reply 12:
Looks like you may be it has not happened recently but any time in the past when I have had to reboot my cable modem cgminer just tells me it has lost connection with pool when the modem comes back up the miner sees the connection gets work then starts mining, last time I rebooted it was couple weeks ago.

### Reply 13:
I cannot reproduce the windows crashes as the only machine I have that can run windows can barely mine at all.If you are having windows crashes, I need your help to debug the issues.See here for how you can help:<link> you have a reliable test case that crashes cgminer then you are the person most likely to be able to help me fix it.

### Reply 14:
I've had some safeguards against the ""lost connection"" crash in BFGMiner for a while. If anyone wants to tell Con (he likes to ignore me), the problem is that the submission threads pile up (as they sit around trying to retry) and Windows doesn't like having a lot of threads.

### Reply 15:
Figures it would be windows problem, no wonder I have never seen it. And there you are quoted so he sees it..

### Reply 16:
That's helpful indeed.However it does not change the fact that I'd really appreciate it if at least *one* of the users out there getting crashes at least tried to help me get debugging info.

### Reply 17:
I set it up, but it appears to take time for this problem to come up. I'll let you know when I have something.

### Reply 18:
Much appreciated! Occasionally nothing useful comes from the information, or windows decides to disable the debugger, but at least we have tried.

### Reply 19:
Did it not give you the option to debug it when it crashed?

### Reply 20:
I've been getting this a lot with 2.9.3. It seems to be mistakenly <rest of thread truncated>
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10154,"Date: 2017-02
Topic: Need advice for mining setup - have free electricity
### Original post:
Hello all,I'm new to the forum, but I have been following bitcoin mining off and on for a while, and several times I almost jumped in and bought the hardware to mine, but my town's high electricity costs have always stopped me. GOOD NEWS: I just moved into an apartment with all utilities included. It's above a restaurant so they have plenty of reliable commercial power (plus air conditioning in the summer, also free). I signed a 2-year lease, so I know I have at least that long with free electricity.I will be mining at home, so I need gear that is relatively quiet. I have researched the Antminer R4, and while that looks great, it's pricey. I have a budget of $4k-$5k, so I'd like to get as many TH/s as possible with my combined miners. I am open to buying a bunch of older miners (of different brands, too) that are reliable, even if they are less efficient, considering paying for electrical power is not an issue.Any suggestions would be welcome! Thanks!

### Reply 1:
Someone has to be the Moral-Margaret here (or Negative-Nancy?), but I wouldn't recommend going too overboard on electricity that's included with your rent. If you start making changes to the wiring, or they see that you're using way too much power and costing them a fortune, they could try to evict you on the basis of electrical code violations, or the fact that you're essentially running a ""business"" there and it should fall under commercial leasing -which is much more lenient towards the landlord and eviction. Personally I would personally buy a couple R4's and claim that's how you're heating the place. Purposely taking advantage of someone and causing them undue financial harm for your own benefit (because they were foolish enough to include utilities) really isn't right.Now to answer your question, the S7 would be the most cost-effective miner for hashrate, but they are incredibly loud. You could try to get away with lower CFM fans and down-clocking the S7's, it might put you ahead in hashrate vs the S9 or R4, which have been very unreliable anyways.

### Reply 2:
Thanks for your response, Finsky. I hear what you are saying. I guess the way I look at it, I already don't use much electricity compared to some other people's daily use of a hair dryer, rolling iron, flat iron, toaster oven, regular oven, etc. I know it's not the same, but there is a tradeoff.Also, I'm never going to set up a large mining farm, even it if starts making money for me down the road. I expect I would only ever have the hash rate equivalent of two or three R4s. With the large restaurant operation, I don't think the owner will notice the increase in electrical use. Mine is tiny compared to his, and my apartment and the restaurant are all on the same power account. Plus, it would balance out in the winter, saving on his heating costs

### Reply 3:
Do you have an agreement about the amount of electricity you can use? If not then check the fuse box. What rating is on the fuses in your apartment and how many are there? A miner needs to be constantly online, so you will need to separate a circuit with a fuse, to be able to run a miner and your home appliances at the same time. You will also need to check if the walls are thick enough or you may have trouble sleeping.

### Reply 4:
Good point, coolcoinz. I will be plugging into a dedicated line from the breaker box, so I should be good there.The noise thing is a bit of a concern, but not huge. I couldn't run an S9 at full clock, of course. But maybe a series of older miners, underclocked, could be quiet enough? I'm just guessing here - would like to know if others have done something similar.

### Reply 5:
I would get a the psu and break out boards from finsky, get a 4k or 8k setup on 220VAnd buy up all the S3 miners you can find.Should be really cheap and they are silent.Antminer R4 if you can find but they are pricey!Anything above the S3 is loud, but you can also underclock the 5 and 7... depends what you can find locally.

### Reply 6:
I don't know how cheaply an S7 could be had these days, but they can be undervolted to downclock around 0.23J/GH and still get a decent hashrate, about a 25% efficiency boost over stock. Less power means less heat means less fan noise, still not S3 silent but probably 10-15db quieter than stock full-blast. Efficiency also means a longer viable lifetime before power costs obsolete 'em.If you're looking for quiet PSUs, I also recommend the 4K setup. You'll have to scrounge up 120mm fans, but a bigger fan means less noise for the airflow. Server PSUs are good for high power, efficiency, reliability and cost savings but tend to have small noisy fans; the 4K setup uses external fans so doesn't have that problem.

### Reply 7:
Yes a toaster oven and hair dryer use the same amount of power as a R4, however they generally run for 2-3 minutes, not 24 hours a day.If there are only 3-4 tenants living in that b<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""S3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""break out boards"",
    ""hardware_is_owned"": false
  }
]"
13907,"Date: 2011-04
Topic: Is mining.bitcoin.cz dead?
### Original post:
I've had no response from it for a few days now....

### Reply 1:
Works fine for me.

### Reply 2:
Have you tried things such as traceroute to attempt to isolate the issue?Slush is very much up and working.

### Reply 3:
after adding a / to the url I run it now and get [2011-02-25 19:47:17] 2 miner threads started, using SHA256 'c' <truncated> 19:47:31] JSON decode failed(1): '[' or '{' expected near '<'[2011-02-25 19:47:31] json_rpc_call failed, retry after 30 seconds[2011-02-25 19:48:02] JSON decode failed(1): '[' or '{' expected near '<'[2011-02-25 19:48:02] json_rpc_call failed, retry after 30 secondsany ideas?

### Reply 4:
Permissions problems, most likely.

### Reply 5:
I'm going to take a guess that your options parameter is not correct for the url it should be--url <link>

### Reply 6:
I'm getting the same message myself[2011-02-26 20:54:18] HTTP request failed: couldn't connect to host[2011-02-26 20:54:18] json_rpc_call failed, retry after 30 seconds[2011-02-26 20:54:19] 1 miner threads started, using SHA256 'c' <truncated> 20:54:48] HTTP request failed: couldn't connect to host[2011-02-26 20:54:48] json_rpc_call failed, retry after 30 secondsi am using minerd --url=<link> --user=xxxx.xxx <truncated> I am missing something as well. Any help would be greatly appreciated

### Reply 7:
Is there any possibility to log what the miner receives? Looks like server is sending non-json response, but I don't see why exactly. Log should help...

### Reply 8:
I think this is another issue than response parsing. The pool is up and running, so I don't see the reason why you cannot connect, except that there is something wrong on your side (firewall etc).

### Reply 9:
Please edit the forum topic, pool wasn't dead for longer than 10 minutes since it started on December 2010 .

### Reply 10:
It could be your DNS server. ATT DNS is having issues at the moment.From a command prompt try Code:nslookup mining.bitcoin.cz 4.2.2.2and see if that resolves to an IP address. If so, you may want to change your DNS until ATT gets theirs fixed.

### Reply 11:
"";; connection timed out; no servers could be reached""I am beginning to think I am having problems outside the miner or pool...I should note that this is a new machine on a new network. Fresh install of ubuntu 10.10

### Reply 12:
Check for firewall or dns problems

### Reply 13:
it was firewall/iptables. FIXED. Thanks for the sounding board!!

### Reply 14:
As of now, it is responding as ""502 Bad Gateway"" (nginx/0.7.65). The pool client is also showing bad response from server. I suspect that I will not be able to get new work from them or at least won't be able to submit finished work. So, maybe time to setup with an alternative pool as backup (I am tempted to put another (older) video card in my machine for the sole purpose of GPU computing (460GTX overclocked) and use it for another worker anyway, but I am not sure I have enough power and don't want fans screaming louder than they are. Anyway, since this site is based on scoring which weights your uptime in a round for payout, this type of outage is rather unacceptable (site should be pooled with multiple IP addresses and redundant backbone connections (using a good ISP perhaps) and reliable software that doesn't all go down at once. I like slush, but this is not good.

### Reply 15:
I'm having the same error (502 bad gateway), but I'm still able to mine and my shares are getting accepted.

### Reply 16:
I think that only the site is broken, the pool itself may be still working fine.There is no need to create a new ""alternative"" pool because we already have enough different pools.My pool has servers in different DCs with automatic failover for high availability :)

### Reply 17:
bitcoind freeze on webserver, it's restarted and running again. Mining was not affected.

### Reply 18:
Yes, it appears that the miner was working, but I had no way to tell if it was working on real data or just eating GPU cycles [especially stale data]. Looks like the slush contribution is very small according to bitcoin watch as well. Slush screwed up it appears. In any event, I am working another pool until I am convinced that Slush has things under control. BTW, the site was back up shortly after I wrote my original messages. I noticed that 502 errors have been a common theme for that pool over the last couple of months, so I really wonder about the ability of the system I hope it is just my apprehension and that it will turn out to be fine and stable with significantly better uptime in the future.

### Reply 19:
Actually not working now.Current server load (60 sec average):0 getwork/sConnected workers: 2749Total score of current <truncated> contributed in current round:233693Approx. cluster performance (30 min average): 12.060 Ghash/s

### Reply 20:
And that takes down the entire site? Seems you should have a monitor for the daemon. Further, the site should be more robust t<rest of thread truncated>
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9737,"Date: 2016-03
Topic: Power for my S1's
### Original post:
So I found a guy selling two S1 AntMiners on kijiji for a really good price. I purchase them both and now I'm in need of a power supply. I have two questions. Would I be able to power up two miners with one power supply? Would this power supply do the job? As I have one laying in my basement. Any information will help, thanks.

### Reply 1:
Thats more than enough. I assume you know youll make a loss or have free electricity. Those things are built like tanks, so you can overclock them because your psu provides so much elec.

### Reply 2:
Lol I'm going to build the rig in the corner of the warehouse at my work, I asked my bosses and they don't care. So I won't be paying for the power. xD I've though about overclocking them but I hear it increases the errors that you receive?

### Reply 3:
Stock setting on an S1 is 350MHz/180GH but a typical rig will push to 400MHz/205GH pretty well. The extra 13% hashrate more than makes up for the extra 1-2% errors. So your bosses are okay with adding $50 a month to the electric bill so you can mine $5?

","[
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]"
15905,"Date: 2017-04
Topic: Need Coaching About Bitcoin And Alt Coin
### Original post:
Hello i need coaching how to mining btc and alt coini need to know step by stop how to miningI will pay for it if its affordable.this is my country kWH detailsFor the first 200 kWh (1 - 200 kWh) per month around 4.75usdFor the next 100 kWh (201 - 300 kWh) per <truncated> the next 300 kWh (301 - 600 kWh) per <truncated> the next 300 kWh (601 - 900 kWh) per <truncated> the next kWh (901 kWh onwards) per <truncated> minimum monthly charge is 1usdso please anyone the PRO in this line ..i need coaching.anything just pm me.I will pay for it if its affordable.

### Reply 1:
you can use it to calculate the profit <link>

### Reply 2:
It is hard to coach somebody without seeing him or without being him in front of you. Though there are tutorials in google and you tube but the actual set up of the mining rig and all its accessories are difficult. It needs a technical person to install all these things. So my tip for you my friend so you can have at least an idea how it is to mine try mining using the website minergate or rent miners online at miningrentals. After having such experience you can now assess if you are up to the job to mine or you want to mine because you think you will get huge income from it. Do some research first and calculate if you can earn on it before purchasing an actual hardware which can be costly later on.

### Reply 3:
1 antminer s-9 uses 1.3 kwatts so 1.3 x 24 x 30 = 936 kwatts per monthso 1 antminer s-9 will get you to the top rate of 12.90 for I guess 100 kwatts or 12.9 centsthe s-9 at 12.9 cents = loser most likely

### Reply 4:
All you need is a pc and a high end hardware for mining bitcoin..,Many people mined bitcoin but get nothing because of the low end hardware that earn just a cent for 1month.,So if you want to start mining buy a good hardware designed for mining bitcoin and your good to go..,after that pick a software that you will use for mining bitcoin ,,.Create your wallet for your own so this is where all your mine coins go..so you have a good hardware your h/s is not bad you can earn a bitcoin for a short time and you can pay your electricity billjust use the mining calculator to calculate your income in your h/s

### Reply 5:
My interpretation is that it is ""binned"" i.e. going over 900kWh/month doesn't make all usage 12.9c/kWh, just the amount that goes over. It is clear, however, that it doesn't pay to go big in your case. I would suggest altcoin mining with GPUs, since current ASIC units disfavor small setups.

### Reply 6:
so the more you consume the more you pay, it doesn't look like expanding your farm would be a wise decision with that rate of electricity that get biggeralso a sigle anminer s9 is already consuming 1000kwh per month, which make your consumption with the highest rate based on your post, and it's clear that it's not profitable for youit's better if you start looking at the altsection, where you can have profit even with 0.2 cent electricity at least if not more, there is definitely more margin there

### Reply 7:
It is really true that seeing the rate of your country KWH it is not recommended to start your mining work even with Altcoin i think your profit percentage will be low so it is better that you can start to do trading in bitcoin and altcoin which will give you more profit then mining it.

### Reply 8:
Ok:1. DO NOT BOTHER MINING BITCOIN2. If you want to mine ANYTHING,stick to GPU coins....and trade them for Bitcoin,if you must cash out.2 a. A video card has MUCH better resale value,even after a year or two.2 b. A much better warranty,up to 5 years if you look hard enough,avg is 2-3 years.......... ASICs 90 days LMAO!!!!!! Buy em used & ZERO warranty 3. MUCH cheaper to get mining with video cards,I use old dual core PCs that have PCIE vid card slots & 4 gigs of ram I find around town & old HDDs.Just buy video card & PSU new.4. PROFIT......a little profit is better than no profit Now Bitcoin miners can flame on me This guy is the ONLY one I KNOW that can mine Bitcoin at a profit,read his story to find out how:<link>

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    ""hardware_name"": ""high end hardware for mining"",
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    ""hardware_name"": ""ASIC units"",
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    ""hardware_name"": ""PSU"",
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21104,"Date: 2016-08
Topic: Running the Gekko Science Compaq in BfgMiner
### Original post:
First of all the Gekko is reconized in BfgMiner as a Antminer U3. Luke Jr. compiled it into BfgMiner 5.3.0 II am using BfgMMiner 5.4.2. The only way was to get the BfgMiner to add devices (pressing M then +) then enter code.Code: -S antminer:all --set <truncated> I did this and had it working for 6-8 hours. Then my wifi adapter crashed and BfgMiner became unresponsive. I tried after re-applying wifi adapter the code given to me in Read-Me Asic (above code) and it wont reconize the Gekko anymore. WHY!!!Trying to reset computer and typing code multiple time nothing will make code work anymore. Is there a secondary code or mabie those who have the Gekko or Antminer U3 could try the code given themself I don't uderstand why my code is not working I had it hooked up perfect please some extra help would be greatly apprecieated I was going to purchase three more Gekko Science Compaq's but if I can not figure out how to run one what is the point! If we get this running the Read-Me said to enter these codes as well. Code:--set <truncated> --set <truncated> Code:--set <truncated> Any idea where these codes are added? Some help would be great I really want to run this miner plus buy three mor<rest of post truncated>

### Reply 1:
Support thread for that software is here: <link> thread for the gekko compaq is here: <link> one of them please./locked

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    ""hardware_name"": ""Antminer U3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wifi adapter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BfgMiner 5.3.0"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BfgMiner 5.4.2"",
    ""hardware_is_owned"": true
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]"
13961,"Date: 2011-05
Topic: ""Block Head"" How many?
### Original post:
Just wondering, How long have you been mining and how many blocks have you found?I've been mining for ~3 months now, started 2/11/11, and have found 7 blocks. 1 solo, 1 @ Slush, 4 @ Deepbit and 1 @ BTCmine (and claimed the 5BTC bonus)

### Reply 1:
I found 5 blocks a few days ago on deepbit, and another 4 on Slush last week. Not sure how many before that (I made new accounts once I started keeping track of expenses/revenue for my taxes).Currently looking into setting up either a private or public (0%, donation supported) pool with one of the earlier server boxes I built. Haven't found one yet in my test pool, but I've only got half my machines working in it while my others stick to a reliable pool.

### Reply 2:
What was/is your hash rate? You must have some power there or luckier than I. I'm only running a single 5870 (400Mh/s) but it has paid for itself already. I'm thinking of investing in another but haven't decided.

### Reply 3:
My combined hashrate just crossed 5 gHash/sec today. The 5 in one day on Deepbit was pure luck. I think all 5 of them were within a 6 hour window. I know 3 of them were within 1 hour, I found 3 of the 4 blocks found that hour at Deepbit. I believe I was around 4 gH/s at the time.

### Reply 4:
Anyone else wish to share?

### Reply 5:
15 blocks since March 26. Slowly increasing hash rate from 1 5850 to 5 5870s and 3 5850s.

### Reply 6:
Cool.

### Reply 7:
I've been mining for about 2 months.I have solved 1 solo block(after mining for just an hour at 600Mh/s a few weeks ago), 8 on Slush, 5 on Deepbit, and 2 on BTCmine.I started mining with a 4890, currently I have 3 5850's

### Reply 8:
Did 4 since March 29. 2 at slush's, 2 at BTCMine. Running 2 5870s

### Reply 9:
I found 1 block at slushs pool, but simply by luck.(on a cpu miner no doubt)I'm still only at 7 BTC after a few months.

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    ""hardware_name"": ""5850"",
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    ""hardware_name"": ""4890"",
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14105,"Date: 2011-06
Topic: Radeon 5870 for $312 -- Need opinions please
### Original post:
I am contemplating adding a new card into my rig. Currently I have 3 Sapphire 5850's but I have room for one more. I found this one for $312 bucks on Amazon:<link> I need some opinions from you guys on it.Does anyone have experience with Visontek cards? I have never heard of them, and this one appears to be a non-reference card. How much overclocking will this sucker handle?

### Reply 1:
Seems overpriced and risky.

### Reply 2:
frys near by? some stores have these still for 199 ar<link> can store check from there

### Reply 3:
For that price you could get 2 5830s new or 2 5850s used.

### Reply 4:
Overpriced for sure.I've bought some overclocked editions recently for $250 new

### Reply 5:
Definitely do not buy at that price. 400Mhash/sec (high overclock) generates 6 bitcoins per WEEK at current difficulty, currently valued at $8.7 / BTC, that's $52. It would take 6 weeks at the current difficulty (which increases ~every 10 days) to pay off just that one card, not including electricity. Mining is all about buying efficiently. I wouldn't buy a 5870 for > $200 (and the lower the better).

### Reply 6:
I dunno if any of you guys live in/near Tokyo but a number of stores I've been checking lately have used 5870s for 15,000 yen (~$184). Just as a point of reference for anyone in the area.

### Reply 7:
Well, this is the going price now. Anyone (online at least) who claims to have these for less has no stock so you'll wait 2-3 weeks for a drop-ship from the OEM anyhow.I just bought 4 of these damn things so I will let you know. I'm not a serious investor, I'm chasing this for the same reason many others, for the thrill. I don't plan to scale up and don't care about making money. The statistics show I will eventually recoup my expenses, however long that might take. I don't expect the network to ever grow so much that I am earning less than $0.077/hr (the cost of a kW/hr here).

### Reply 8:
Thanks for all the advice everyone. I do have a Frys close by in Atlanta so I may give them a call and check.The reason I was looking at the 5870 was I only have room for one more card in my current system. I didnt want to sink another few hundred in building the base for another rig, so i figured I would just absorb the cost and throw in another card and maximize my current rig.Power is not a concern since I will be mining from my office next week (power is included in the flat rate utilities payment).

### Reply 9:
online check says none in atlanta area, sorryDuluth, GA 3296 Commerce Avenue, Northwest Map17.68 item <truncated> HD5870 1GB PCI-Express Video CardNot Available Milton, GA 3065 Webb Road Map24.08 item <truncated> HD5870 1GB PCI-Express Video CardNot Available

### Reply 10:
This is inspiring me to get off my ass and check the local shops for GPUs since the recent price hikes in most AMD cards online. I'd be all over those 5870's in Tokyo.

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    ""hardware_name"": ""Radeon 5870"",
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  {
    ""hardware_name"": ""5830"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""overclocked editions"",
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    ""hardware_name"": ""used 5870s"",
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    ""hardware_name"": ""HD5870 1GB PCI-Express Video Card"",
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]"
16529,"Date: 2023-06
Topic: Are you doing this as a Bitcoin miner also?
### Original post:
If you are doing this, how is it favoring you?Some hardcore crypto miners in my state are into BTC mining for the past years now and I noticed that they don't mine in a bear market, they always buy their asic miners after Bitcoin halving or a month to Bitcoin mining and ride the miners through the bull market, and once Bitcoin start making a turn back in value they start selling their asic miners. My question. Is are people doing this? And at the same time favours them? Can you opt in and out of Bitcoin mining using bear market to get cheap asic and mine to make profits until the bulls are tired and it's bears turn to take over and you sell your miners.. They have been doing this for a long time but I am wondering how this is a smart idea because I always advice those that want to mine Bitcoin to never sell their miners in a bear market and that they should keep mining and store their Bitcoin.

### Reply 1:
Those people are firm believers of short term profits. In bull markets when prices are going higher they buy the miners and they will buy when prices of Bitcoin go high and difficulty get a little low. Their main goal is to cover up their initial cost during those times and earn as much profit as possible during the bull run. When they cover up most of their initial costs then if the bear market starts they sell the miners and earn some extra profits.Their main motive is not to add extra-processing power to Bitcoin mining but to earn with the mined coins during the bull run. Their mind is not into long term holding as they want good profits in short durations. They will save the earned money for the next bull run where they will be able to buy more advanced miners that provide more processing power and higher energy efficiency. They will repeat the process over and over.

### Reply 2:
I think the strategy that you mentioned is a common practice among some cryptocurrency miners. By buying ASIC miner after a Bitcoin halving or when the market is in a bearish trend, miners can obtain mining equipment at a lower cost, while also benefiting from lower competition in the mining space. They then use the miners during the bullish market to generate profits and sell them when the market turns bearish, potentially making a profit from the sale of the ASICs.As for your advice to keep mining and store Bitcoin during a bear market, that can also be a sound strategy, as it allows miners to accumulate Bitcoin at lower cost, potentially increasing profits in the long run. the choice of strategy will depend on a miner's individual risk tolerance, financial situation, and market analysis.

### Reply 3:
Yeah there is something to be done in that sense, as you say OP.If you, for example, bought ASICs in 2018-2019, ran them and they were already profitable, you would have made a nice profit in 2020-2021 by reselling them.As their price is more or less correlated to the price of BTC, and therefore to the hype generated on mining, there is a chance to make a profit.However, if you have large quantities of ASICs, if they run stably, your infrastructure is done and clean, and your electricity is cheap, it's a bit of a gamble.Why not just let them run? They're already profitable. Why would you want to go through the supply difficulties, the waiting time, the import costs and difficulties again?Especially since you have no real guarantee that the price of ASICs will drop again and that you will be able to buy them cheaper. Even if bear markets always come after bulls, there is no guarantee that you will be able to find good ASICs at good prices after you sell yours.Personally I keep everything, as long as my electricity rate allows it, I even leave old S9s running. At worst, I let them run solo like a lottery ticket, but I can't see myself bothering to ship and manage the resale of dozens<rest of post truncated>

### Reply 4:
In my opinion other miners are actually doing this here in the crypto space. Apparently, this is a technique or strategy they call Bitcoin mining in bear markets. The idea is to sell the Asic miners at a low price and then sell them when it's time for the bull market with a layer or profit, this is probably the strategy they are doing. Also, the advantage of this method is that miners who love Asic can buy cheap during a bear market, or they can sell Asic miners at a high price when the value of Bitcoin increases.

### Reply 5:
Everyone has their method of doing business and getting their gain. If they are mining only in the bull market and sell off their ASIC mining equipment then that how they feel like to do. But normally it is the bear markets that are very good to mine and when bitcoin goes up they can sell it with the higher price and buy more machine. But this one your state guys decide to mine only on the bull market. Are you sure confirmed this story from them well? Because the things is not clear to hear.

### Reply <rest of thread truncated>
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    ""hardware_name"": ""ASIC miner"",
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    ""hardware_name"": ""ASICs"",
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10427,"Date: 2017-08
Topic: Antminer S5 stopped working, won't connect/reset
### Original post:
So bit of a weird story.I got an Antminer S5, factory reset it, connected it to a gold 605W PSU and pool and was mining at 350 hz, 1150 GHz and everything was working for around 12 hours at 60 degrees. Before I shut it down I changed the hz to 150 to see if it quieted the fan and shut it down.I bought a new fan, removed the stock fan and tried to connect the 120mm new fan. The 4 pic connector was slightly different on the back and it wouldnt fit the plug. I put the stock fan back on and powered up the machine.Since then the only lights on the miner are 3 green and 1 red on the control board. There are no lights on the blades and I cant connect to the IP anymore. The 2 lights in the Ethernet cable are on but not the green or red lights on the right of the Ethernet.I have tried everything to connect, it wont factory reset and nothing I do changes the power up sequence. The fan turns on and there are just the 1 red light and 3 green lights in a row on the control board. The Ethernet cable is connected and it works on other computers. I can see everything connected to my router but the antminer has disappeared. It seems like it is not powering up at all.Please help.

### Reply 1:
You changed the hz or the MHz ?I think you made confusion with the unitsMining at 1150 GHz it's impossible

### Reply 2:
I changed from the standard 350 to 150. The fan slowed down considerably. I'm kind of lost, as there is no way to access the miner or reset it, it seems like a lost cause.

### Reply 3:
HummI think you are not reseting it well Read the user guide

### Reply 4:
Hi there,Did you sort this out? I'm having a similar issue. Could it have been a power network issue? I'm in Canada so it shouldn't be a problem, but I am in an apartment building and thought that may cause issues. Anything else you tried it would be good to know

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    ""hardware_name"": ""Ethernet cable"",
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9836,"Date: 2016-05
Topic: Raspi running from ATX PSU?
### Original post:
Hi everyone,I will be receiving a rpi3 soon to run my mini miners and would like it all to run from the ATX psu that I currently have everything plugged into. The psu is hooked upto a breakout board from eyeboot which from what I can see has a 5v white 4pin socket on it.I have no idea what this socket is called but would it be able to power the pi?Alternatively could I use an lm2596 based voltage regulator to power the pi from a 12v feed or is the pi sensitive to voltage <truncated>

### Reply 1:
here is a set of links for you<link> of these run rasp pi's great. you are better off keeping the rasp pi on this separate from the atx and the atx powers the usb hub / miners

### Reply 2:
Thanks for the links. Ive got a power supply coming with it but just trying to think of ways to reduce the amount of plugs/cables and make full use of the atx. Ive seen people use the old style big 4 pin molex connectors. I suppose I could use an old micro usb cable and an old molex connection and solder them together.

### Reply 3:
You can get a loop if you use the raspi and the eyeboot with the same power supplyAnd you plug the eyeboot hub into the raspi

### Reply 4:
you can do it i saw a post the other day on the web can't find it now they had it all running off a atx psu with custom made cables ..sense i won't do but it's a idea that way you might save some space form the 110 line junk and even be able to use everything on one line over a 240 line on a atx .I use this <link> and is one phip linked i have been using for a year now might get a few more they save space over the annoying plugs that all most all ways seem to use up to much room on the surge plug or what ever you use.

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  {
    ""hardware_name"": ""ATX psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""breakout board from eyeboot"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""lm2596 based voltage regulator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""usb hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""old style big 4 pin molex connectors"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""micro usb cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""molex connection"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""eyeboot hub"",
    ""hardware_is_owned"": false
  }
]"
16338,"Date: 2022-09
Topic: A general so bitmain can see the problem thread.--Fixed By bitmain!
### Original post:
So today I order a s19 at 2:32 pm pay at 2:46 pmand it takes till 3:38 pm to clear.So bitmain has my $2080 and has order marked expired.Annoying they expire the order in 1 hour I know they usually fix this over night and sometimes I have to refer them to a thread to get it fixed.order done at 2:32PM clear time is posted as 3:46pmcoin set at 2:46 pmIt is particularly annoying for the 1 hour cancel time since we all know clearing a pay may take a bit of time.I will post a complaint to them and link them to this thread.hoping to see it fixed soon BTW this is a decent price on the gear.They just fixed it. locking thread

","[
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": true
  }
]"
23478,"Date: 2021-03
Topic: S9 hashboard repair - anybody offer this service?
### Original post:
Hi guys,one of my miners got water-damage - don't ask how LOL2/3 boards work fine, the third one causes a short when I plug it in. all chips worked fine but between supply and ground I got continuity. It MIGHT possibly be just a capacitor.Anybody here offer repair for the hashboard?thanks

### Reply 1:
Where do you live?There are some well-known repair service for ASIC miner but they are only a few of themHere check this post below.- Where to fix your Asic miners.

### Reply 2:
appreciate the info.in the US.was hoping someone private is doing stuff on the side to save a couple bucks.any idea where I could buy a replacement board cheap? Ebay wants like 200-250bucks lol

### Reply 3:
That's very expensive for one hashboard have you tried to check the link that I posted above?The one link from the link above is <link> they are also operating in the US try to contact them.Also, check that link they also have some cheaper hashboard compared on Ebay 200-250$ is not a fair price.

### Reply 4:
ya I checked it, all S9 hashboards are ouf of stock unfortunately

","[
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""replacement board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 hashboards"",
    ""hardware_is_owned"": false
  }
]"
24130,"Date: 2023-05
Topic: What is causing hardware malfunction?
### Original post:
I have a future it Apollo Btc miner. It is only about a year old. It malfunctioned and got disconnected from the mining pool twice in the past 24 hours.Any thoughts on what would typically cause this? The only thing hThat it tells me, is that the hardware errors spiked pretty high, but no specifics.

### Reply 1:
What pool do you mine?It maybe the pool server is recently down?It would be better if you check the logs of your unit and post the logs here and maybe you can get more idea what the cause of this problem.Sometimes high spike of hardware error is cause by overheating issue.

### Reply 2:
I mine with Braiins Poolthe pool server was not down. during the 8 hours my miner was down last night, the pool found two blockshow do I check the logs? I looked at the dashboard, and the closest thing I found was something called ""raw stats""I was thinking it was an overheating issue too when it got knocked offline yesterday too. it was a hot day, and the house got up to 82 degrees. but last night, the AC was running, and i bring the house down to 72degrees.

### Reply 3:
Have you ever tried to mine on other pools to test?Have you tried to check the system for logs?I don't know how to pull out the logs from this unit so I think it would be better if you bring this issue to futurebit support section from this link below.- <link>

### Reply 4:
I have not tried a different pool, I might try that to see what happens.It seems like its mechanical though. When it happens, the fan gets real loud, and the machine gets ""knocked off the network"". When I try to turn the monitor on to reset it, the monitor doesnt get a signal from the miner, so I have to turn the power off manually (such as pulling the plug), to reboot the miner.thank you for your help, I think I will email futurebit to see if this is known issue

","[
  {
    ""hardware_name"": ""Apollo Btc miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""monitor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": false
  }
]"
10975,"Date: 2021-07
Topic: S19 price history?
### Original post:
Anybody recall what Bitmain originally charged for the base S19 model? I was under the impression Quantity 1 was something like $3500, but I wasn't watching closely.I did see an article about somebody buying 8000 of them for $17.7M ($2212 each).I see Blokforge is currently selling them for $7330, include the 27% Trump tax ($5772 pre-tax).So are prices coming down?

","[
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  }
]"
17145,"Date: 2012-05
Topic: ATI Stream SDK v2.1
### Original post:
Having some trouble getting v2.1 working. I followed Kano's guide, for v2.4, to install v2.1. I don't know if this is a bad idea. Reading through some other threads it appears v2.1 requires a different process. Could someone explain the install process for v2.1?What I did:Code:cd /opttar -xvzf <truncated> <truncated> -av lib/x86_64/* /usr/librsync -avl include/CL/ /usr/include/CL/tar -xvzf <truncated> -avl etc/OpenCL/ <truncated> correct my difficulty I then did:<link> sh -c 'echo <truncated> >> <truncated> got it to work, but not 100%. To test, I installed oclvanitygen which runs on one core, claiming BFI_INT failed. When I try to run additional cores it exits on error.Code:Build log:sh: /bin/x86_64/clc: not found

### Reply 1:
Looks like linux. In windows its as simple as running <truncated> and bam, 2.1 sdk installed. Can't help you though, sorry

### Reply 2:
I went back to AMD SDK v2.4 and now I'm having trouble with this.Code:Error -1001: clGetPlatformIDs failed (no OpenCL SDK installed?)In my <truncated> directory I have :Code:/lib/x86_64$ lslibamdocl64.so libGLEW.so libglut.so libOpenCL.so libOpenCL.so.1The procedure I used to install 2.4 is in OP. I'll walk through the procedure again and see what happens. :shrugs:Edit: Reinstalled and all is working goooood. whew!Now I just have to learn to install ATI Stream v2.1 properly.

","[
  {
    ""hardware_name"": ""AMD SDK v2.4"",
    ""hardware_is_owned"": true
  }
]"
10974,"Date: 2021-07
Topic: S19 vs S19j
### Original post:
Beyond the basics, like power consumption and speed, what is the difference between S19s and S19js?Looking for an answer along the lines of the S9: 14th - best chips, 13.5Th - initial production batch, 13th - worst chipsI've been very pleased that the bulk of my S9s were the 14th variety. Many of those still run relatively efficiently at 7.9V where the 13.5s and 13s often run much less efficiently to get to the same TH output.So, any knowledge? I'd settle for informed speculation? <smile>

### Reply 1:
I wouldn't be the least bit surprised if the J models were just amped up standard models with fewer chips. But that is just speculation.

### Reply 2:
Probably not completely relevant, but while perusing ebay for miners I came across a selection of listing for the asic chips themselves. The listings had different number chips for different iterations of the same miner. So its probably not as clear-cut as most think.

","[
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19j"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic chips"",
    ""hardware_is_owned"": false
  }
]"
9704,"Date: 2016-02
Topic: Collecting Data on B8 S7 Failure Rates
### Original post:
fuck I bought 3x s7 batch 8, and tomorrow should sendMy god we hope that work well

### Reply 1:
it's called chain in antminer GUIChain #1 is far Right then middle is Chain #2 & lasltly Chain #3 is on the Left with miner facing towards you.2x B8 arrived same day mined only for about 7-8 hours.1 showed 0 temp with 30 ASIC chips & dashes ----------2nd was working fine till low hashrate with lots of HW errorsdisconnected both problematic board, documented the details with pics & mailed BMT waiting for approval to remove them then more pics to be sent & wait for reply then send it back to BMT.I think entire process will take a minimum of 2 weeks for boards to return even i'm located in asia.PSU are dps 2000 bb's, i even swapped them. no good. same issue.in a couple of hours (GMT +8) china will wake & end of holidays for BMT. let's see what kind of reply i get.on another note, 1 of my b5 had a problem too, board arrived to BMT & now more waiting.

### Reply 2:
Thanks for posting that info, yslyung.

### Reply 3:
It seems B8 S7 is the worst to date, with many failures reported. We can expect B9 to be the same since bitmain indicated B8 was the final design, which leads me to believe that B9 = B8 with a later shipping date.I personally have 1 dead B8 board, board #3 and it died within 2 weeks of powering it on. I think we'll find that most people with a failure will also be board #3.Bitmain has, to date, been very slow to respond to my RMA request. I'm giving them the benefit of the doubt right now due to the holidays.If you've had a failure in another batch, you can indicate that by voting for the last option. In that case, I kindly request that you don't cast a second vote to indicate which board # failed, but instead post those details manually in this thread. That will allow us to gather details specifically for B8 in the poll.

### Reply 4:
no worries mate. sharing is caring.thx for starting the thread too.

### Reply 5:
I could be lucky but B8 I have still has no issues hashing. I have kinda took it easy on it, no OC or pushing. Don't know if it matters but using the Bitmain PSU (should not matter).Only thing that was it seems they truly did mean +10 on efficiency when they put it. So it had a lower efficiency with lower chips, but guess that is not a failure.

### Reply 6:
I have 2 B8s with no issues, also never overclocked and running Dec 11 firmware. I am wondering if people are overclocking them to death.

### Reply 7:
DOES SCREECHING FAN count as a failure? Also the lack of any response or care for my issue probably could be categorized as a failure regardless of what batch. Other than that my Batch 8 are running fine for a week. Still have another 1 to be power up tomorrow, hoping for the best.

### Reply 8:
I have one batch 8 that hashed fine for a while then check on them one day after all my rigs failed over from number 1 pool to number 2 pool. It was hashing at approximately 3,000 GH/s on the number 2 pool. Eventually, number 1 pool came back up and was ""Alive"" again but still only 3,000 GH/s [Meaning, 2 boards hashing instead of 3]. I did not see any ""x"" or ""-"" for any blades. I rebooted several times and I simply ""save and apply"" several times with no success of 4,700 GH/s again. I disconnected that rig and hooked up another rig to take it's place. That rig is sitting to the side at the moment. I'm planning on getting back to checking that rig again later this evening or tomorrow to see if it still has the same issue. I'll keep you updated.

### Reply 9:
Unfortunately, I don't think ""screeching fan"" will count. Maybe it will. It's hard to say what they would do...

### Reply 10:
the ones + all the s7 i have are on stock clock. just 7-8 hrs of hashing & gone. sob sobbtw, both failures on b8 is on chain #1 including b5 also chain #1.1 of the b8 comes with the whooong whooong whoong sound.placed a small double sided tape on the grill reduced the sound. could've stick another one but it will block the airflow & i'm fine with the reduced whooooong <truncated> <truncated>

### Reply 11:
I had a couple of boards on chain 1 and 2 fail on me from B1. I replaced them but the one on chain #1 failed again, it is in China to be delivered tomorrow. Seems like chain #1 is the source of failure for many.nhando,I think it will be cheaper if you replace the fan by yourself, they might want you to send the fan at your cost for RMA.

### Reply 12:
I have 4 x B8s in my small farm, they are running but running hot +10c compared to other batches 600mhz.1. all 7 x S7s are patched with Dec11 FW on 1st Jan 2016.2. the irritating whoooooo sound has gone away in the last 2 x B8 ordered in mid-Dec (but they are running high temp 68-72c at fans 100%)3. the whoooo sound in the other earlier 2 x B8 was rectified at 54% fan ratio with acceptable temp ~ 60-65c4. the rest of the S7s are 600mhz variants, running 55% fan speed (to eliminate the whoooo sou<rest of thread truncated>
","[
  {
    ""hardware_name"": ""s7 batch 8"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""B8"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU dps 2000 bb"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""b5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""B8 board #3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""B1 boards on chain 1 and 2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  }
]"
13830,"Date: 2023-06
Topic: AntGuardian - 100% LIBRE Free Software Watchdog for all Bitmain AntMiners
### Original post:
Looks interesting. I'd give it a try but I stopped using Bitmain miners several years ago in favor of far more reliable gear from Canaan.Can it work with any miner that uses Kano's cgminer API?

### Reply 1:
We can make it work with any API pretty easily. I do not have miners to test tho.Earlier versions of antGuardian use BMMiner API through SSH but since ssh was closed we started just using the web interface.I would give it a try for CGMiner API but I currently do not have any miner to test...Im looking forward to anyone joining development. You can even create a pull request on github and start de conversation going.Anyway thanks for your reply!!Please STAR on GitHub and Share!! Lets promote freedom respecting software!

### Reply 2:
OK, maybe you can try version 0.1.1 then,, it is a fairly simple script. The only difference with the current version is you have to enter the list of IPs for your miners (not very convenient when using DHCP).<link> this works for you.

### Reply 3:
If you read the API-README and can access the full config file of the miner, you can turn on mcast so the API of every miner, with mcast enabled, will respond to a single mcast message on the network ...The miner.php can also use that so that the php finds all your miners, with mcast enabled, without you having to tell it their IPs<link>

### Reply 4:
Bitmains API - and for that matter just about every other mfgr of miners API - are all based on or actually using the CGminer API written by Kano back when he and -ck were still working together. While BM may have added a few new commands specific to their miners (I doubt it) if this works on one make of miner then in theory it should work on all of them.

### Reply 5:
AntGuardianFREE Open Source Antminer monitor and restart toolFor all of us reluctant to run proprietary software anywhare near our miners, let alone controlling them. Now we have an alternative!Install instructions:<link> tutorial:<link> monitor and auto-restart toolCompatible with all AntMinersScans the local network for miners. Once connected, restarts any miner when accepted shares do not increase in SECONDS_4_CHECKS seconds, given that there is an active internet connection (checks with google.com).This software and all its dependencies are free and open source. Free as in free speach not as in free beer, meaning it respects your freedom! Please star on GitHub and share with your miner friends!Happy LIBRE mining!

### Reply 6:
A lot of traffic to GitHub is coming from here so some of you guys must be out here. Im talking about AntGuardian users.I know it is a simple tool for a very niche sector of people but It has found its way to gain some popularity as I can see from the Github traffic statistics and from generous donations recieved over the past few months. There are other free alternatives but in my opinion none is is as ""bare bones"" as this one. You can literally analyze the whole python code in an afternoon, which is nice if you are paranoid like me.Another reason I think it has gained popularity is because you just set it and forget it. Although it would be very very nice if we could release some play store or SNAP store packages or windows executables for ease of use but I think that might just miss the whole point to begin with... About being free and transparent and all... Let me know what you think about thisI would appreciate some feedback from users since I have not been mining for a few months now. Specially I would like some feedback about how it works with the new miners. But any feedback good or bad is appreciated. Let me know what miners are you using it for, adn for how long (if you f<rest of post truncated>

### Reply 7:
Hello, this don't work with s9k, Restart the miner every so often, how do I contact you to pay for one that works?

### Reply 8:
Hi, im trying to get this to work but i get this error: File ""AntGuardian.py"", line 17, in <module> import request - ImportError: No module named requests but when i install it says module requests-2.25.1 installed successfully. Anybody who can help with this?im running macOScatalina and Python 3.9.

### Reply 9:
Hello eeva1990. No need to pay me, you can donate if you wish but I will help you as a user regardless of your donation or not.Can you send me some Logs? or screenshots? How often does it restart the miner? It will certainly restart the miner if it detects ""accepted shares"" are not increasing (and there is an internet connection).You can P.M. me or use this thread.Just send me screenshots of the program functioning (command line).Please anyone who posts questions or troubleshooting requests send me the screenshot of the program output (what it prints on the command line). If you have multiple versions of Python, most of the time it has to do with that, you might have the requests package, or every package installed on another ver<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Bitmain miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gear from Canaan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AntMiners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""new miners"",
    ""hardware_is_owned"": false
  }
]"
11318,"Date: 2023-06
Topic: New Asic Hardware or fake? Any news about?
### Original post:
Hello all,in the german area the user polargrid announced new asic hardware (link below)5nm Technology // 75TH @ 2800Watt<link> anybody knows anything about this?german topics<link> regards, Willi

### Reply 1:
Hey Willi,TBH it sounds like a load of crap

### Reply 2:
yes it really could be, but let's wait for the countdown first but could also be very interesting and a new (small) player.I would rather wish for the second one.but if we see crap / scam, so we shuld warn immediately Best regards,Willi

### Reply 3:
Scammer announce crap all over the planet regularly.Don't hold your breath, you'll be dead.If anyone announces something real with hardware to go with it, many other will see if before you do.

### Reply 4:
Got this link Right now <link>

### Reply 5:
The Web UI looks just like the Bitmain one with a new logo sticker on it.

### Reply 6:
This thread is giving way too much advertising to a scam ...

### Reply 7:
Website updated, Products and Video placed.<link> but be carefully. At the moment no Hardware shipped out.

### Reply 8:
nothing add up in this video, the Linux build for xilinx is from 2020, the cgminer Version 1.0.0, there is screen running in the background, Copyright 2013-2014 by xxx, and so onAnd a 50% - 70% Discount LOLand a swiss support number, OMFGIt does not smell like a scam, it stinks!

### Reply 9:
Looks and runs almost 100% like a S17+

### Reply 10:
got the message from Polargrid. No test will be possible and no distribution of hardware through the forum.too bad, I wanted to bring a little more light into the darkness, but not possible. so no answer of: is it scam or not?so watch out if you order something here. If so, I would be happy about a review...

### Reply 11:
As a Chinese miner and mining equipment supplier with 5 years of experience, I clearly tell you that this is a scam and there is no such machine. Please look for antminer and whatsminer when purchasing miners.

### Reply 12:
Well, the miner does have an original design, ignoring that it looks a bit like a used miner, it's funny that in the video on Twitter it shows 2980, does anyone know a miner who does 73Th at ~2920W? 90 days domain, Twitter account created in October...flags are starting to pile up.

","[
  {
    ""hardware_name"": ""new asic hardware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatsminer"",
    ""hardware_is_owned"": false
  }
]"
24056,"Date: 2022-12
Topic: T17 bad clock counter error
### Original post:
I have a couple of T17 miners (for repair), some of them show this <truncated> bad clock counter. chain = 1, asic = 5, core = 0, found 1, clock counter 0x00000006""in some hashboards this does nothing and after a reboot (never figured out why) it hashes and doesn't have any other problem.In other hashboards the go in an infinite rebooting loop.I tried cleaning them, changing firmware, control board, psu and other things, but non helped.I also tried these things:Asic re-ball (the one mentioned in kernel log, and others around it)Changing asicRe-ball related resistors and capacitorsEven in one Hashboard all of the asics where re-balled, but nothing happenedPic reprogrammingPic re-ballingPic changingTemp sensor and related components re-balled or changedHere is a log from a miner that hashes, currently don't have any faulty boards at handCode:Hardware name: Xilinx Zynq <truncated> (unwind_backtrace) from [<c010a8d0>] <truncated> (show_stack) from [<c02fcea4>] <truncated> (dump_stack) from [<c0405d64>] <truncated> (ubi_io_read) from [<c0406050>] <truncated> <truncated> from [<c040a1d4>] <truncated> (ubi_attach) from [<c0400b28>] <truncated> <truncated> from [<c0401ff8>] <truncated> (ctr<rest of post truncated>

### Reply 1:
Reballing is likely the same as resoldering what you did you just directly go to hardware without troubleshooting testing test points and understanding what the kernel logs say.Now look at this logCode:2022-11-30 10:42:03 <truncated> chain[0], voltage is: 17.8915432022-11-30 10:42:05 <truncated> chain[1], voltage is: 18.0936032022-11-30 10:42:08 <truncated> chain[2], voltage is: 18.2711723 hashboard has different voltages if this is not the same it won't work or run normally flashing the hashboard PIC without a backup and use a random PIC file will always end up like this.You will need the EEPROM tool or hashboard code editor to match them Here's what it looks like- <link>

### Reply 2:
On testing points everything is ok. that's why my only option was hardware stuff.the main error that I cant solve it bad clock counter, and that happens when I test even one hashboard, so even having different voltages wont be the case (since its just one board), but thanks for the tip.I'll try to find a board that doesn't work so as to post the logs, since the one I posted before doesn't reboot non-stop.Do you have any idea what the cause can be? Or logs are needed to say anything?

### Reply 3:
If it works fine why do you need to fix the bad clock counter?If it's running fine then ignore the error and keep mining.Usually, if the voltages of the hash board for the s17/t17 series are different miner is not running normally mostly it stops the miner in a few minutes. Unless you are not using stock firmware?Would you mind trying to flash the unit with BraiinsOS some issues can be fixed by switching to modded firmware like BraiinsOS?

### Reply 4:
Because it doesn't work fine in other <truncated> since its for someone else, I can only use stock firmware. But modded firmware are way better than stock in almost every aspect.Thanks for the tips.

### Reply 5:
So it means the other boards are working fine but the other hash board is not.Like I said above you have 3 different hash board voltages I believe you have 1 or 2 hash boards not running properly if the other hash board is working fine on that unit then you can dump the firmware of that hash board and flash it to other hash board that does not work properly. So that the control board will recognize it.Because if the working hash board is not matched to other hash boards that do not work then it will run with some issues. So make sure they are match since you know already how to reprogram PIC then reprogram the other 1 or 2 hash boards that do not work properly. If they match and have another issue then post the new logs here and focus on that issue.Here's some guidance on how to repair the hash board below just in case you need a guide.- <link>

","[
  {
    ""hardware_name"": ""T17 miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""firmware"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Asic"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""resistors and capacitors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Pic"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Temp sensor and related components"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""EEPROM tool"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard code editor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BraiinsOS"",
    ""hardware_is_owned"": false
  }
]"
22299,"Date: 2018-01
Topic: Antminer S9 status page questions
### Original post:
A few questions on the Antminer S9 status page<link> questions on the image above.1. Why does Chain #6 chip always have a 50+ times hardware error rate than the other 2 chips, which always seem to have same number of HW's?2. Which fan is the intake, Fan 3 or 6. Iwould assume fan 6 since intake is probably running slower than exhaust?3. I had to upgrade firmware from Bitmain on this unit. Which was Apr 2017 version, is that the latest? Because I notice my chips are running approximately 10 deg hotter and my fan speeds are not changing and running 1000 rpm lower than they were before (likely the chip temperature rise reason) How can I get my fan speeds back up?

### Reply 1:
1. Unless you are seeing tens of thousands of errors on one board over the other there is nothing to worry about. All boards accrue hw errors while running.2. 3 is intake normally as long as they were not plugged in backwards. 3. The newest firmware i have seen is from November of this year. The latest firmware publicly available on their site is from May of 2017.

### Reply 2:
Thank you.Where would one find the November firmware for the S9, the only firmware I see around is the Blissz firmware for the D3 from November 2017?

### Reply 3:
<link> Support S9 miners except S9-11.85T12.93T14T with fixed frequency* Remove post mac address and remote stop mining interface* Fix a bug of memory leak. * Fix to support keep config when upgrade* Remove unused *.bitmain.com url strings in binary file in fw. Seems to be the latest from NOV 17, 2017 for S9 autofrequency. READ CAREFULLY NOT FOR ALL MODELS!! I have a 13.5T that is about 5 days old and this works on my unit. I can tell you that you should get a lot less errors with new firmware BUT it runs exhaust fan ~ 4200 rpm and is louder. Initially mine also ran about 2400 rpm and got a lot more errors on Chain #6 chip as well.here is a screenshot of mine <link>

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  {
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  {
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9-11.85T"",
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    ""hardware_name"": ""S9-14T"",
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21911,"Date: 2017-12
Topic: NEWBIE QUESTION: BITCOIN MINING IN UK
### Original post:
Try to check in the local electronics market bro. I think you will get that easily. Still you did not find it anymore there. Create a one thread here to ask the people belongs to your city who is been in the forum and involved in mining. I think that person can help you to get the information where you can get it.Since I am not your countrymen I could not be able to help you buddy. If you are fine to add the three pin to the socket do it else go for electrician.

### Reply 1:
If you bought a Bitmain APW3++ power supply, the required cable is just a normal plug like you'd use for a computer. The socket type on the APW3 is called c14, you can find a pic here<link> likely you have a lot of these lying around if you have a bunch of computer equipment. You can use one of those computer or other appliance cords as long as it's not too thin - miners draw a lot of power. Or else go to your local store and buy a nice thick one for a few pounds.If you did not buy an APW3++ power supply, then you need a 1600W power supply. Here in the US, I can buy a generic 1600W power supply for about $100 from ebay. It will come with the cable to plug into the wall, and it will come with 10x PCIE-6 12V power cables to plug into the miner.

### Reply 2:
I'm starting out mining and expecting the antminer S9, i understand it doesn't come packed with an electricity cable, do I get one from maplin and plug into a typical three pin wall socket or do i need to get an electrician to put in a ""special"" socket instead?EDIT: I don't expect you to respond unless you are from the UK, otherwise it's just pointless.

### Reply 3:
@cableiso Thank for the response, yes I ordered a APW3++ power supply. I was just making sure I hadn't forgotten anything else.Whats all this 110v or 240v talk on running at 1600w? I'm assuming you are UK based, I can just plug the miner in the garage or will I need to beef up the power supply? Big help if you can share any info. thanks.

### Reply 4:
I am US based, so I use 120V sadly.What it means is that the APW3++ power supply can deliver enough power only when it is connected to 200-240V. When it is connected to 110-120V, it can only supply 1200W which is typically not enough.I think you have 240V in the UK, right? So you're fine. You can plug it in and it will work. If you were in the US, you'd have to get a special 240V socket installed or use two power supplies each at 120V.

### Reply 5:
Im from the UK and run an S9 a few months back. You will need a server psu and breakout board or bitmains APW3(or current variant) to power it. The lead is a standard kettle lead (c13 type i think) with obviously the UK plug on one end (which should already be fitted and maplins do stock them).You can run it from a standard plug socket in your garage aslong as its the only major load on that ring. Dont go plugging in another high wattage appliance otherwise you will trip your breaker/fuse.If you are running it in the garage you will need to have an internet connection for the ethernet port (wireless switch, powerline ethernet adaptor etc).Also take into account your electricity cost. In Essex I pay 0.13kwh which meant I only ever broke even. Not sure what it means now with the price rise in BTC but I cant run a newer S9 due to noise anyway.

### Reply 6:
I am USA but have sold a lot to UKthis one is 1.0mm2 better then 0.75mm2 thick will carry power better<link> it is fused at ten amps for extra safety

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  {
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  },
  {
    ""hardware_name"": ""breakout board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""kettle lead (c13 type)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UK plug"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wireless switch"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""powerline ethernet adaptor"",
    ""hardware_is_owned"": false
  }
]"
23303,"Date: 2020-07
Topic: What is the APW3++ PSU FAN 2-pin female connector called exactly?
### Original post:
I have not opened a APW3++. Does it have an ordinary type fan connector with two pins?If yes, then Molex KK series (2.54mm pitch) would be an answer for you.Ref. see this for example <link>

### Reply 1:
Ok for anyone interested... I found it!<link>

### Reply 2:
Hi,I have a bunch of APW3++ PSU fans that I have to replace. I'm used to repairing these things. But now I wanna order a bunch of 2-pin female connectors online. Somebody here knows perhaps what the exact name of these connectors is? There are hundreds of types on these professional webshops. But it's so small it's hard to see on the pictures which one it is exactly...Thanks!

","[
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  },
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    ""hardware_name"": ""Molex KK series (2.54mm pitch)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW3++ PSU fans"",
    ""hardware_is_owned"": true
  }
]"
17086,"Date: 2012-03
Topic: Need info about Catalyst 12.2 and effect on mining performance
### Original post:
Hi guys,I wanted to switch on the AMD video converter feature by installing the media pack,but when I tried to install it asked me to update my drivers (as I'm ok with 11.7 atm in terms of mining performance and also it won't let me just install the feature while leaving my drivers alone).Question is does catalyst 12.2 improve or degrade mining performance? Your feedback will be very helpful to me.

### Reply 1:
I'm sure someone will say that it's terrible but I didn't notice too much difference myself although I'm not trying to get 100% performance either.I hit about 750-800 mhash/s on my 5970 with 12.2.Once I got my 3rd 5970 back, 12.2 no longer worked and I had to use 11.2. Performance seems similar although I underclock and undervolt a bit now due to 3 cards on top of each other creating more heat.

### Reply 2:
People seem to be having problems with GPU's ""disappearing"" when upgrading to 12.2. 11.12/12.1 seem to be the current sweetspot. Personally I use 11.12. The drivers themselves don't affect hash rates though. SDK's do. Make sure to use the appropriate SDK for your cards. If your card can run on 2.1 SDK, do it (all 5xxx can run on it, and low to mid/high 6xxx can too). 2.4/2.5 is maybe <1% slower but is compatible with VLIW4 architecture (6970), and 2.6 should be avoided unless you are using a GCN architecture video card (7970).

### Reply 3:
No problem, just copy file named as ""atipdlxx.dll"" from 12.1 Catalyst to <truncated> (for <truncated> (for x64)Enjoy!

","[
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    ""hardware_name"": ""GPU"",
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    ""hardware_name"": ""5xxx"",
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22425,"Date: 2018-03
Topic: 3M Novec 7100 and antMiner S7/S9
### Original post:
I'm interested to implement this solution to improve performance and reduce fire risk.I think ROI go away for the cost of the Novec fluid... but i think miners will be much more secure against flame and overburning.Non one can share experience with this solutions??thank you

### Reply 1:
I have looked at this and it interests me, However having no experience in the field I walked away, I don't have the experience to be messing with that kind of stuff, Its also bloody expensive isn't it. Done a bit of googling and found this tho. <link>

### Reply 2:
I've also thought about it, honestly i think it only makes sense if a MFG designs a kit that is make for liquid cooling. For theorhetical purposes or R&D heck yeah, but for ROI it goes to crap. Bitfury uses the novel fluid in their containerized datacenters, that's how they're able to get so much hashpower in such a small space. it most definitely works, idk about a retrofit thought. One thing i have thought about is water cooling with water blocks, similar to what you'd use on a gaming pc. i think water blocks would have to be custom made and then removing, cleaning, and attaching the new water block would be quite the intensive process... I'd toy around with it, but im not volunteering to donate one of my S9's to science haha

### Reply 3:
I also really like the idea of water cooled miners, they can be next to silent and the radiator can always be placed outside, I personally loved the Antminer C1 for the water cooling capability of it. Didn't that Miner edge company also produce some water cooled stuff?

### Reply 4:
Damnit, now ya got me thinkin' again...Ya know, the s7 is pretty much the same hash board design and I have a few spares here...The longer backside sinks, easy to replace with custom water blocks.Topside -- cannot be removed without damage. So, a custom block with something such as a putty-like thermal gap-filler from Bergquist or such to mostly fill the existing chip sink fins and xfr heat to a block on top of them? Not as good as direct block contact with the chips but still far better than pushing air over them.Hmm...

### Reply 5:
Just use mineral oil and a radiator and blow a fan through it like everyone elser. The only reason they use the Novec fluid is due to the low boiling point which they are using to help aid in a refrigeration cycle (condense, expand, condense)

### Reply 6:
i found a lot of video on yout ube on two phase cooling...but if seems easy to dip AISC hardware in novec liquid...it is less easy to understand how to build the condenser coil...no info about the liquid temp inside...i continue to search info

### Reply 7:
i think the same about ROI...but until i dont understand better, liquid price and condenser coil price.. i continue to search.Remember who whit this system... you get 2 important things1) at the same power consumption, you can push miners preq veri high.2) you definitely put out the risk of burn in your home farm

### Reply 8:
i found this interesting data sheetit could help

### Reply 9:
So does all this brainstorming mean your wheels are spinning on some S7/S9 Water block mods

### Reply 10:
I looked into this quite a bit back in the S5 days - really, you can pick whatever miner you want, I think everyone who has seen the videos of Novec immediately goes ""I WANT THAT!"". I actually went so far as to buy some of it to experiment with a bit, and I had three big takeaways from it... The first is that the actual system in production is much more complicated than it appears. You aren't just tossing the boards into the Novec, you have to manage how the cables come into the enclosure, and this is surprisingly challenging (and I love acrylic, look at any of the enclosures I've designed in other threads). The other big enclosure issue is that you still have to have some sort of cold water loop to bring the gas Novec back into it's liquid state - and this leads to my second big takeaway, and that is that you're still left having to deal with the heat. The best way I found to think of Novec is that it's a REALLY efficient way of transferring heat from one place to another - in this case it's transferring heat from the ASIC to your cold water loop... But the net result is that the water loop now contains the heat. Sure, dealing with a radiator and being able to convey the heat trap<rest of post truncated>

### Reply 11:
Bet you used Novec 7000 which boils at 34C (93.2F)?I was thinking about the 7100 which boils @ 61C (141.8F). Means it's stable even in very very uncomfortable if not deadly ambient temps. Also means that you can have the higher delta-t between its boiling/condensing temp and the water cooling loop.Ja some slight pressurization to leak detection purposes would be a good idea. BitFury's data tanks are sealed and also show a rather large pipe coming out. An over pressure relief pipe perhaps if the water loop fails and China Syndrome sets<rest of thread truncated>
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  {
    ""hardware_name"": ""Antminer C1"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""S7 hash board"",
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22654,"Date: 2018-06
Topic: My own ASIC
### Original post:
Hi all,i already know that bitcoin mining is remunerative (maybe) only with ASIC hardware but... i like to develop hardware and firmware so, just for fun, i'd like to create an USB powered device that use microcontroller to ""emulate"" actual ASIC.My target is to realize a useless Mh/s device (other than a GPU miner) I know they use USB/UART converter to comunicate and this is easy, but where i can find protocol and commands it has to respond to?Thank you

### Reply 1:
If you're already coding your own hashing function, why use someone else's protocol? There's no standard, and every manufacturer's is already different.Also most of them aren't really published info.Older Avalon (gen4 and back) datasheets can be found with some protocol info, but their stuff's a bit weird and changed a couple times in there. Bitmain's protocol has been relatively fixed from S1 to S9, and the BM1385 (S7) datasheet has decent info on it.

### Reply 2:
thank you sidehack...my problem is how to create a ""driver"" to use my device with cfgminer

### Reply 3:
Ah. I can't really help you there. I do all the hardware and firmware but someone else writes the driver. I could probably do it given enough time, but I'm already tied up with design and manufacturing and hosting and whatever else is going on at the shop.VH integrates my GekkoScience stuff into cgminer. You might also talk to jstefanop (the MoonLander guy); I'm pretty sure he did both hardware and driver for his miners.From what I understand, cgminer basically has the framework in it for pool communication and for organizing how work gets divided up and distributed. The particular format in which it is sent to the miner, and the particular format in which nonces are received, is hardware-dependent, as are any control signals (setting clocks, etc). The driver would mostly be a translator between cgminer's base structures and your miner's specific protocol implementation.

### Reply 4:
Finally i got it I found this good example how to create an Arduino Miner:<link> is mining at 45 H/s so i think it is the more useless and slower miner ever ... but i like it It is emulating an Icarus FPGA but i don't know why my BFGMiner is saying it is mining at 360MH/s Do you have any idea?This is a screenshot of BFGMiner<link>

","[
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    ""hardware_name"": ""Avalon (gen4 and back)"",
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22305,"Date: 2018-01
Topic: S9 Antminer
### Original post:
After mining for about 3 hours or so, the worker goes offline. Then I restart the miner configuration and the worker goes back online? Sometimes the pool goes dead. Need Help Please

### Reply 1:
There are many things that can cause this, we need to know a bit more. What are you chip temps? What pool are you connecting to? When the systems goes offline, can you still access the web interface?

### Reply 2:
It would help us to help you if you posted a screen shot of your miner status page.

","[
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22799,"Date: 2018-11
Topic: Antminer T9+ won't start hashing
### Original post:
Hi, even if a card is HS it should appear!Thank you for providing the kernel diary;)

### Reply 1:
Hi,I got two Antminer T9+ and one of them works fine. The other one I am not able to get it to work. I rebooted it a few times, I am able to get the IP using my ethernet cable, and after I add the necessary changes (pool to mine, name of worker as it's on my antpool), nothing happens, it doesn't start hashing. It also doesn't show the normal blinking green light nor the fault light (neither are on). When I press IP Report button the fault light comes on, but I can still get the IP address. What should I do to fix this?Also: the exhaust of the miner that doesn't hash is cold/room temperature, in comparison to the one that works which is obviously warm.Hi All,I was able to update the firmware and the antminer started working. However, it seems that it's only partially working, as only some of the chain#s show up (see picture below). Anything I can fix here?Currently hashing at a rate of ~7TH/s instead of over 10.5<link>

### Reply 2:
Hi,Here's the Kernel diary below. Any thoughts?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256528[ 0.000000] Kerne<rest of post truncated>

### Reply 3:
It looks like 3 chains are missing so that might be 1 entire hashboard. Start by ensuring the ribbon cables are all seated properly, as well as your PCI-E connections. I'm not near my T9+ atm so I can't compare them right now. I'll go back through my posts to see if I have any extra info to add. Here is a thread where some issues were discussed. No solutions to your problem but you can compare what you are seeing with other logs. <link>

### Reply 4:
Your problem is here : <truncated> failed on <truncated> failed on <truncated> failed on <truncated> has 18 asicChain[J3] has 18 asicChain[J4] has 0 asicOn the board, is 3 led red per board, please verify the light on board 3 (left) please (see by the outtake fan)

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  {
    ""hardware_name"": ""IP Report button"",
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  {
    ""hardware_name"": ""exhaust of the miner"",
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17151,"Date: 2012-05
Topic: Any Problems with putting rig in car garage?
### Original post:
Hello,I currently have my miner already but it heats up the area quite fast, and is a miner that is mining in an open area where the heat can dissipate to the rest of the house. This is my concern because I don't want to pay extra for AC and therefore reducing my profit from mining.I would like to ask if the garage will have any bad effects on the cards. I already have the case fully enclosed so there won't be issues with bugs and whatnot.Would the garage ambient temperature be bad or <truncated>

### Reply 1:
I'm going into winter now but I ran most of my rigs on the back verandah over summer, blew them out with some air once a month.Daytime temperatures in summer here go over 40C regularlywith cgminer, undevolting and downclocking memory my cards still ran at acceptable temps (under 85C at peak temp for day)A *lot* of miners have rigs in garages, sheds or barns.oh and I dont use cases

### Reply 2:
Make sure your electrical will handle the rigs without popping breakers when the garage door opens, for instance.Also, physical security is generally lax in a garage. Particularly if you show it off to the neighbor, who then tells a neighbor and the next thing you know its gone.

### Reply 3:
Yes the electrical should stand up to power the rig. My neighborhood is a higher end neighborhood, with basically zero crime rates here, so no worries about that.Thanks for all the advice. Moving it into the garage very soon

### Reply 4:
2 HD6870's and a HD5870 running in my attached garage. Day temps hit 90F + in my garage. The cards clock down using CGMiner and will stop mining if they hit 85C. Rather have no bitcoins than a dead card.Get one of those fake security cameras and put it in there. Padlocks keep honest people honest. Video cameras in clear view keep almost everyone honest. Even a fake camera is a pretty good deterrent if you don't let anyone (not one person, NO ONE, not a wife, not your mom, NO ONE) know it is a fake.I have all open cases and bugs don't go near the things, I doubt they like the 100F+ temps in the PC's during the summer. In the winter all the bugs are gone.

### Reply 5:
Thank God.

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    ""hardware_name"": ""rigs"",
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21471,"Date: 2017-07
Topic: Antminer shuts down unexpectedly
### Original post:
Helloi have 4 antminers s5 with 858watt psu 80% power efficiency and the problem is that after a couple of hours working properly the miners shuts down and i have to close the psu wait 10-15 minutes in order to shut them on any ideas what might be the problem?

### Reply 1:
Check Ventilation, Cooling, the Antminer is probably overheating and to prevent more damage to the system.

### Reply 2:
the temps are always 45-55 c

### Reply 3:
Most certainly it's a PSU problem, try swapping with a diff one.

### Reply 4:
It looks like a damaged PSU. I recommend a good CM(Cooler Master)V1000 up to 1000 watt and I am sure you will not have any more problems if the temps are like you are saying.However I am curious, where do you live because S5 is profitable only with free electricity ?

### Reply 5:
Since you have 4 antminers, I presume you have more than 1 PSU?Give another PSU a shot, if it's just cutting out and you're not able to power it back on, I'd say PSU is at fault.Worth a try?

### Reply 6:
i've tried 3-4different psu but everyone was cheap not a big name such as CM i ve tried 835 watt 80+ bronze and still had the same problem

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  },
  {
    ""hardware_name"": ""CM(Cooler Master)V1000"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""835 watt 80+ bronze"",
    ""hardware_is_owned"": true
  }
]"
11141,"Date: 2022-04
Topic: problem with my a1
### Original post:
Is that Love core Aisen a1 miner?Actually, there is no official support for this unit here or website but I will try to help you find a solution to your problem. Would you mind posting the whole logs make sure it is the whole logs and put them into the insert code tag a # button you can find them when you edit your post above or if you have limited character use pastebin.com and paste the logs there and paste the URL hereFor now the only thing that I could suggest is to try to flash it you can download the firmware from their old link below- <link> code: n7h3

### Reply 1:
<link>

### Reply 2:
Hello friends i am new at mining. One of my cards on my a1 suddently stopped hashing(seems 0mh). I reboot my machine and i only see three cards(chains). I saw the log file and i thin i detect the problem, but i cant understand what it really is. First a problem with chain 1chain1: power downApr 06 04:28:52 rockchip cgminer[286]: fan0 speed:5760, fan1 speed:5880Apr 06 04:28:53 rockchip cgminer[286]: chain1: encore first modeApr 06 04:28:56 rockchip cgminer[286]: dm_compat.c,5164: poll fail !Apr 06 04:28:56 rockchip cgminer[286]: spi_cmd_reset poll fail !Apr 06 04:28:56 rockchip cgminer[286]: failed to reset chain 1!,try againApr 06 04:28:57 rockchip cgminer[286]: fan0 speed:5820, fan1 speed:5880Apr 06 04:28:59 rockchip cgminer[286]: dm_compat.c,5164: poll fail !Apr 06 04:28:59 rockchip cgminer[286]: spi_cmd_reset poll fail !Apr 06 04:28:59 rockchip cgminer[286]: failed to reset chain 1!,try againApr 06 04:29:02 rockchip cgminer[286]: dm_compat.c,5164: poll fail !Apr 06 04:29:02 rockchip cgminer[286]: spi_cmd_reset poll fail !Apr 06 04:29:02 rockchip cgminer[286]: failed to reset chain 1!,try againApr 06 04:29:02 rockchip cgminer[286]: fan0 speed:5790, fan1 speed:5820Apr 06 04:29:05 <rest of post truncated>

### Reply 3:
Chain 1 got some error at the first run but it works for a while. Unlike chain 3 stop working causes a low hash rate.Would you mind trying to run them one by one or only chain 3 if it can run stable and know if the PSU is not giving enough power?Also, try to clean up all PSU terminals and swap all cables to another hashboard then check for changes.

### Reply 4:
if found out that the wire wasnt good, so i replaced it. But the 4 hashbord heat the wire melt, so i found another hashboard and everything is fine. What is the second mode?

### Reply 5:
Where did you get a replacement wire? It will melt if you are using very thin wire or cables. I'm a bit confused do you have stocks of hashboard as a replacement? What exactly second mode are you talking about?A mostly short circuit is the reason why wire and cables are melting without a multitester we do not know if the hashboard is shorted or not.If I were you hire a professional Hashboard technician to repair your hashboard you can check this <link> can also get an idea of how to repair hashboard at the bottom of that page.

### Reply 6:
Hello,I am planning to buy a Aisen A1 Pro. Are these reliable machines? I know some miners have trouble operating under high heat such as the avalonminer and some are better at higher heats such as whatsminer. How would you rate these Aisen miners?Overall, would you recommend these miners?FYI, I basically have access to almost free <truncated>

### Reply 7:
Not a good option if you are going to buy this unit there is no support here or support website for this unit. I suggest you better ASIC miners that have support like Antminer. If you want to look for a list of manufacturers then I suggest you read this thread - <link>

### Reply 8:
hicheck your psu and replace with another one.maybe your psu is bad.

","[
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    ""hardware_name"": ""Love core Aisen a1 miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cards on my a1"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""PSU"",
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  },
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    ""hardware_name"": ""wire"",
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    ""hardware_name"": ""hashboard"",
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  },
  {
    ""hardware_name"": ""Aisen A1 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""avalonminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatsminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": false
  }
]"
21566,"Date: 2017-09
Topic: MOVED: mining wallet
### Original post:
This topic has been moved to Technical Support.<link> about mining.

",[]
14391,"Date: 2011-07
Topic: How much does it cost YOU to produce a bitcoin?
### Original post:
me: $3.11. At a price of $15 mining stays profitable for me until a difficulty of 7.5 Million my electricity rate .125/kwhI know some people out there pay half that.

### Reply 1:
Card, MHash, Mothly BTC Production(and in USD), Cost to run per monthHD4850, 68, 1.33 ($19.95), $6.78HD5830, 300, 5.87 ($88.03), $11.23HD6950, 340, 6.65 ($99.77), $8.99I'll be profitable for some time...

### Reply 2:
HD5870x2, 844, 15 ($225), $0.00 thanks to solar panels even at night.

### Reply 3:
Power consumption and 2 year linear depreciation on cards, $8.92 / BTC

### Reply 4:
what % will be worth your card in 2 years ? Zero ?

### Reply 5:
About 30 minutes at my job. (after tax)

### Reply 6:
NOOOOOOOOO! You solar panel people are going to drive the rest of us out of business.

### Reply 7:
Yes, that is the assumption. Actually I do a quick depreciation to %65, then linear depreciate to 0%. I do consider 2 years to be conservative, but not without a realistic basis. If a card craps out at month 16, my depreciation cost estimate would instantly become 33% too low. Also I'm unsure how far factors such as ASIC development and a flood of GPUs into the market following a confidence crash could lower GPU prices.

### Reply 8:
Those things are not cheap. They cost multiples of $10,000 to install, even for a modest system.So it's not ""lucky you -- you get $50 in free bitcoins every month"" but rather ""lucky you, you could afford a $25,000 solar panel system"".What I'm saying is -- the free bitcoins is the LEAST of that person's good fortune.Just like those who got into BTC mining in January 2011 (or earlier!) are better off, likewise those who got into the game of LIFE earlier have an advantage.Every year, inflation eats everyone alive. Those who got ""established"" in the early 80's, for example, will have paid less for everything, even relative to their lower wages at the time.Everything's more expensive, and ""harder"" now, since our dollar has lost more of its value than it had lost in, say, 1985. Those people got to buy their houses when real estate was much cheaper, for example.Plus the longer you've been working the more disposable income you tend to have, all things being equal. That is, comparing the same kind of person at 20 vs. 50 years old.

### Reply 9:
I live in a predominately college town so this may not apply everywhere.A lot of landlords here offer some or all utilities included in rent as an incentive to the college kids. Being an apartment dweller at the end of my lease this summer, I specifically found an affordable place I could rent with utilities included. My landlord pays my electricity for me, therefore my he pays my rent for me! He can't be making any money off me, I imagine the power bill is pretty ridiculous with the AC and Bitcoin rigs running all day. Fortunately he can't do anything about it until my lease expires in 12 months. If you have a big mining farm that eats up a few hundred dollars/month in electricity, it may be worth finding a cheap, <truncated> apartment just to house your rigs. Of course if you are spending that much per month in electricity, I imagine you've probably already considered this option as well as a hundred others. Just be prepared to get tossed out on your ass as soon as your lease expires.

### Reply 10:
Don't be surprised if the circuit breakers get ""tripped"" once in a while, and you have to go restart all your miners a few times a week -- or a few times a day. ""Oh, those power surges are a real pain!"" he'd say.I'm sure the landlord wouldn't just take it laying down.

### Reply 11:
You're right, you will probably be getting angry calls from him every other day if you are pulling any real amount of current but there still isn't anything he can legally do about it, depending on your specific lease and any loopholes included I suppose. If you are running a farm out of your apartment, he could probably get the fire marshal to come by but as long as your setup isn't unsafe, they can't really do anything either. No law against having computers.If he does resort to those sort of ""guerrilla tactics"" like flipping breakers or otherwise interrupting services to your place, you can try to get evidence of him tampering with your power and have a pretty easy to win lawsuit against him. I personally live in a duplex though so the landlord can't get to my breaker-box without me letting him in.Just throwing the idea out there since it has been working great for me so far.

### Reply 12:
And how much do you think he needs to mine to pay off that solar panels Thought about solar panels too (not particularly for mining, just for the house), but if I count everything, the panels and the maintenance. I actually get a lot of years electricity for that and when they are paid off I probably almost need to replace them.I wait a little longer before getting solar panels

### Reply 13:
When you start talking about le<rest of thread truncated>
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    ""hardware_name"": ""HD4850"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HD5830"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HD6950"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HD5870x2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""solar panels"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPUs"",
    ""hardware_is_owned"": false
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]"
4167,"Date: 2012-09
Topic: BOINC / F@H + FPGAs
### Original post:
Is anyone thinking about developing a bitstream for CM1s to be retooled for use with BOINC or F@H?Just thinkning ahead for ASIC release that I would like to retool my FPGAs to further scientific knowledge rather than collecting dust....My elec costs $0.25kW/hr so when BTC becomes uneconomical, insert ASIC release, then I would like to help humanity through science

### Reply 1:
F@H requires too many floating point operations and probably way too much RAM for FPGAs (very simple lattice folding models could be used but this is pure theory , no applicability). Smith Waterman (alignment, but preferably of nucleotide sequences not proteins) could run efficiently on FPGA. I see a project probably related to that on BOINC <truncated> but I guess it would be much better to come up with our own project that fits FPGA much better. We could think about something like this and maybe even get some funding [probably realistic in EU or USA, but not cross continent].Maybe we could discuss potential projects here.

### Reply 2:
I think a Gibbs sampler (<link> would fit quite well on FPGA especially if it would deal with DNA sequences. We could then start looking for motifs in the nr database or in the human genome.

### Reply 3:
Your biggest hurdle is that most alternative uses that potentially any FPGA can be re-purposed for, often requires a decent amount of fast on board memory to be of much use. None of the ones built for bitcoin needed this fast on-board memory, so were not built with any significant amount of them. So you have to consider that when you look into what it's going to be reused for.I could be wrong, but projects suggested so far, are kind of memory hogs, how much that hurts it's ability to do it's job I don't know.My FPGA's will be held onto till these are unaffordable to operate, which should take a while. Even then I will just store them for the day when they might be needed for bitcoin mining again. After all if the hashing algorithm ever changes, these FPGA's can be changed, ASIC's can not. I don't expect it to change any time soon if ever all, after all it would be pretty significant event and cripple all ASIC's in the process, more of a just incase scenario. It will take GPU's a while to get to the same level of energy-efficiency and we all know how quickly bitcoin has advance in 3 years.

### Reply 4:
Bear in mind too that a huge percentage of the mining power currently deployed is totally, and in some cases quite deliberately, not merged-mining a full panoply of alternate <truncated> how many FPGAs are actually out there that would get on board with Massively Merged Mining, who knows how profitable some of the chains could become, and how much additional revenue all the chains that have had to go into hiding due to lacking enough hashing power to secure them could end up adding?-MarkM-

### Reply 5:
That's a good point. We should all start pushing for folks to use Merged Mining Pools, ones that support a lot of the alternative coins. The one I'm on right now is great for it. (bitparking pool)

### Reply 6:
That would be something worth working towards.

### Reply 7:
1. Gibbs sampler (or other multiple sequence alignment generating methods) don;t need much memory2. FPGA has block RAM and distributed RAM that would be sufficient for many applications

### Reply 8:
I am keen to mine alternative cryptocurrencies however it is my understanding that to do this would require new bitstreams. Is this true or can the current BTC bitstreams be reused for other, currently exisiting, alt-currencies? IF so, which ones?Cheers

### Reply 9:
To use the FPGA for boinc/f@h you need the proper bitstream. Problem, making the bitstream for bitcoin mining is fairly easy, it's just sha256 hashing. While making it for these distributed computing project is much much harder, because what they do is more complex. Also projects update their client with new functions and so on, so you would have to update the bitstream when this happens.

### Reply 10:
Do your FPGAs work with p2pool ? If so they should have no trouble doing Massively Merged Mining.-MarkM-

### Reply 11:
You can use FPGA to solve partial problems of a more general problem. For example smith waterman can be applied in many scenarios.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FPGAs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
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  }
]"
11569,"Date: 2011-08
Topic: A Linux Java GUI to control fans and clocks of your AMD GPU
### Original post:
I wrote a Linux GUI to control fan speeds, temperatures, mem and gpu clocks of up to 4 adapters. The tool relies on aticonfig, so make sure you have that one up and running.<link> you find the tool useful, I would appreciate a small donation to <truncated>

","[
  {
    ""hardware_name"": ""AMD GPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""aticonfig"",
    ""hardware_is_owned"": true
  }
]"
4138,"Date: 2012-08
Topic: Bounty: a bitstream for better utilizing the Cairnsmore1
### Original post:
I'm in.

### Reply 1:
Count me in for 1BTC.

### Reply 2:
i'm in for 9

### Reply 3:
add another 1BTC to the pot

### Reply 4:
I'm in with 10 BTCsspiccioli

### Reply 5:
Great idea, thanks for opening this thread.Putting 10 BTC into the Bounty myself!I would like to see a bitstream that can be loaded via usb interface. Dont wanna mess with jtag cable.

### Reply 6:
You should send a board to ZTEX

### Reply 7:
I am willing to support this bounty, but also agree with Entropy-uc that it does only makes sense if the folks mining with CM1 can profit from it.Right now the greatest uncertainty factor is how 'soon' Enterpoint will provide their dedicated CM1 bitstream unleashing the full power of the board. Nobody would start working on a new bitstream when we fully make it dependent on non controllable third party events - it must be a combination of intra- and interdependent compensation.This is how I would word my contribution to the pledge:1) I will pay out 50 BTC to the first community member that develops and releases a bitstream for CM1 before 2012-08-31 that provides long term operation with an average hashrate of at least 760 MHps per board. The bitstream does not need to be open sourced itself, but the API must be provided along with a proof-of-concept implementation support for an established open source miner (cgminer, MPBM, etc.) and full step-by-step documentation to reproduce the correct set-up.2) Starting from the release day of the developed bitstream and until 2012-10-30, for each day I will pay the developer a performance bonus of (B - N) / 200, where B is the bitstream's has<rest of post truncated>

### Reply 8:
I agree with most of that.Open source would have to be part of the deal, I'd gladly put some bitcoins towards that.Don't care who makes it, could even be enterpoint themselves, might encourage them to speed up the process.

### Reply 9:
I agree that it is unfair to cut off the bounty solely on an Enterpoint release, and would discourage anyone from working on it. Part 2 of your proposal makes me dizzy and you're going to get into debates on the actual values for each delta to calculate it.I will make one caveat here. I will not pay a single Satoshi for delivery of a bitstream with any form of copy protection, that includes ET's sharecropping scheme or anything else that would prevent loading on any compatible board.I will match Zefirs commitment of 50 BTC for any bitstream that meets or exceeds the 750 MH/s rate and 48 hour stability up until August 31st, or the earliest Enterpoint release of a 4 processor hashing bitstream whichever happens last.Further I offer 100 BTC as a bonus under the following conditions:1. At least 300 BTC including my 50 BTC above is committed to the bounty by the community under the terms finally agreed upon (minimal free riders)2. All the files required to build the bitstream are published and released under a version of the GPL or more permissive license terms.3. The bitstream is released on or before August 5th.4. No Enterpoint bitstream using all 4 FPGAs has been released beforehand.

### Reply 10:
Well damn, im glad this thread is here. It shoulden't be too hard to get the other pair of fpgas working with an icarus bitstream that would be a good amount of btc for not much effort. Unless of course the controller has issues, which I think it does then an open source bitstream just for the controller would be a good idea.

### Reply 11:
I also prefer requirements to be kept simple. But I had one specific thing in mind with my second part: competition for higher speed. We have two measures to achieve here, getting a fast bitstream and getting it soon. Paying only the developer that shows up first biases the development effort towards a bitstream that just passes the minimum requirement but no more. Say someone that is already working on a bitstream and delivers 750MHps begin of August, but someone else had an idea for a 900 one, but this will take him at least end of August to finalize. The second part of my proposal would allow him at least to earn the delta for some while and motivate him to finish his work even when we had already a 'winner'.I do not like ET's approach either, but if someone succeeds to run it on CM1, I will use it. Alas, this would not qualify to get the bounty we are discussing here - fully agree that it must be a transparent bitstream that operates with any established pool without third party interaction.Not sure if 'whatever happens last' is ok. What if Enterpoint releases a bitstream late (say: never)? I am not going to pay for that in 2013. Shouldn't it be more 'whatever happens first'?To<rest of post truncated>

### Reply 12:
in with 1BTC

### Reply 13:
Once things get started, they are getting momentum Yohan's announcement to me sounds like Glasswalker successfully took a major hurdle and might finalize what he is working on soon.I am <rest of thread truncated>
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    ""hardware_name"": ""controller"",
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10678,"Date: 2017-11
Topic: Can I trust ""eraminers.com"" for purchasing miner or it's scam?
### Original post:
Hi Everybody,Does anyone know of ""<link> is it valid and trustful?I checked ""<link> and it advised me that it has high risk!Please help me,Thanks

### Reply 1:
Soooo BELIEVE the scam adviser....The ONLY miner maker that uses distributors is Canaan and they list the sites on their home page.If they are 'selling' a hitherto unknown miner - avoid like the plague.

### Reply 2:
yes, I bought from them an apw3 power supply and it arrived within a week

### Reply 3:
Oh, if Tobias Schmitt says it's legit, well must be...

### Reply 4:
So trustworthy.. Much wow. I'm not sure why you would double check in a forum after running the check that anyone here would do, your just lucky some legit members answered you before a 1 post Newbie chimed in. If you look around the forum you can find the reputable places to buy miners from.

### Reply 5:
Thank you very much, I think you're correct and i should never trust that site.

","[
  {
    ""hardware_name"": ""apw3 power supply"",
    ""hardware_is_owned"": true
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]"
16265,"Date: 2022-05
Topic: What are the exact degrees of freedom in finding a valid block?
### Original post:
Hi,I am working on an educational project for bitcoin solo mining. I searched as much as I could but still haven't understood the following questions:1) What are the ""exact"" degrees of freedom in finding a valid block? (What exactly is the search space?)2) What guarantees that within those degrees of freedom (search space) a valid block ""will"" be found?More details about my questions:I know that a miner asks for a block template via ""getblocktemplate"" RPC command. Based on the ""bits"" field it can calculate the target hash relative to which the valid block's hash needs to be smaller than. I know over the course of mining, the network may create new block templates with updated info (for example additional transactions are added). So the miner can use the ""longpool"" feature to have the most updated version at all times. Moreover, the miner can ""choose"" which transactions to include in the next block. So they can exclude some transactions (as long as they are not marked mandatory). Furthermore, the miner can choose an arbitrary message string for the coinbase transaction. They can also play with the timestamp to some extend. So for each of these choices they go into a for loop over th<rest of post truncated>

",[]
14500,"Date: 2011-10
Topic: Rig Master Build Tips
### Original post:
Good start so far. I would heavily refute the first bit about the onboard GPU though. It's accurate if you're going for nothing but maximum hash rate. If you're going for maximum efficiency however, adding an extra card is counter-productive. Adding an extra 15-20 watts (or more) for a few extra Mhash/sec from GPU0 doesn't add up. You're simply not getting the 15-20 watts of mining power back out of the primary video card. With those numbers, NVIDIA based mining would actually be cost effective....unless you can find a really old PCI card that can output a 2D display and idle at a few watts. Most lower end 3D cards will suck up 20-50 watts while idling though (for example - the NVIDIA G92 chips are brutal. My roommate's 200 series GTX drains 87 watts just sitting there).

### Reply 1:
You know, I used to think that, but I have spent a long time looking at 4 screens rotating between 16 machine each on kvms. While you may have momentary high burst of hash power, you really are only getting 70% at the min and maybe 90% at the max. Using onboard gpus will not affect wattage (or every mobo I have with one lies on my Kill-a-watts). Now your still going to say this will not be a big loss, but over a month, its huge. Look at your shares for your main gpu and look at the rest, 70-80% diff. If you are a true miner, you should not have more than 4 cards on your board anyway for a bunch of reasons. But having a display only card will not kill you, especially if you are not using it for heavy acceleration. I dont do anything without testing. For my test I used the following systems in the following builds.Each build has a non-mining gpu either pcie or onboard, and one with all cards mining and/or no onboard.Foxcon (cant remember, will edit with model number) AM3 (2)16x (2)1xSemp 130 Cpu4x Sapphire 5830s run stirctly off a Thermaltake Rx2 750 with some brand I cant recal 80+ bronze on the mobo.120gb hddMsi890FXA-GD70 Semp 130 Cpu4x Sapphire 5830s stirctly off a Thermaltake Rx<rest of post truncated>

### Reply 2:
Learn about your hardware: One of the biggest mistakes I almost made was in a choice of 6pin adapter. I had come across an ebay listing for sata->6pin adapters and they were cheap in bulk. So I went ahead bought myself a good bunch for about $50 and days later they were in my hands. Now even before I hooked these up, I noticed something. Normally on a 6pin, you have 3 grounds and 3 12v+ connections running parallel <truncated> these had all the grounds right, but the middle 12v was not present. So I took my pos test box out and fired it up not expecting the card to run, and no it did not. For people out there with a Sapphire brand card, your middle 6pin on the adapter is a loopback to one of the outer 12v pins. So seeing that, I cut some wire and made it like the Sapphire adapter. Worked.Take the time and know what your hardware is, and it can save you time on simple issues.KISS: Keep It Simple Stupid: My first few machines were based on either linux coin or Windows XP x64 with Trixx or Afterburner for an Oc option. Ran ok, but like crap compared to when I started running CGminer. The options in that program allowed me to eliminate my Oc program, and control cooling and oc at once.<rest of post truncated>

### Reply 3:
I also have quite a few machines/cards mining (see sig). I don't see this behavior on my rigs... I'll get into that below.Er... Sort of. That assumes you're using a board with an onboard GPU in the first place. I'm not. I assure you that you'd see slightly less power used if the board *didn't* have that onboard GPU. If you already have it, then yes -- using what's already there wont significantly affect wattage. If your onboard GPU doesn't use any power or generate any heat, it's supernatural and magic. 15 of my rigs have 4 GPUs and they don't exhibit this behavior. Maybe it's something specific to your setup? All of these rigs except for 1 (my main PC) are headless. Most of my rigs currently have about a 2 week uptime and I don't see the disparity between cards on any of them. In fact, on some rigs, I have slightly *more* accepted shares on GPU0. Even then, the highest share difference I can find between GPUs on *any* of my rigs is 0.269 percent.Yeah, sorry about that. I realize that you wanted to lock the topic and have PMs, but I wanted to post this publicly to reduce what is [possibly] misinformation. It wouldn't be a public forum without public discussion. Here's what I'm usin<rest of post truncated>

### Reply 4:
The claim of 70% to 90% GPU load if you use it for desktop is nonsense.Unless your are running HD movies or trying to game with it you should get 97%+ GPU load on the GPU which is primary display and that is when it is in use. The other (headless) GPU should be 99%+. If you aren't getting that there is something wrong with your rig.On my 3x5970 display according to cgminer my load isGPU 0 - 99%GPU 1 - 98%GPU 2 - 99%GPU 3 <rest of thread truncated>
","[
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    ""hardware_name"": ""NVIDIA G92 chips"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""200 series GTX"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Sapphire 5830s"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Thermaltake Rx2 750"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Foxcon AM3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Msi890FXA-GD70"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sata->6pin adapters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sapphire brand card"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""3x5970"",
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]"
11436,"Date: 2011-06
Topic: Phoenix Rising: Front End GUI to Phoenix Miner
### Original post:
this looks lovely. will have to try it.

### Reply 1:
Niice! good work!

### Reply 2:
Works great, I love it! Thanks!

### Reply 3:
Just gave it a shot, looks like it sets up right, but the OSD doesnt work for me. The program looks like it is running, but Ive got no way to tell. Im running a single Sapphire 5850 Xtreme on Windows Vista 64. It might just be something with vista... Id love to get this working if it gives me a better hashrate than guiminer.

### Reply 4:
Try alt+tabbing. Do you see their ""windows"" like this?<link>

### Reply 5:
Does this gui restart phoenix if the connection drops? im looking for something that gets around the phoenix idle bug

### Reply 6:
What's the common way of mining on multiple GPUs? Fake plugs? As an example for fake plugs, for 2 GPUs, do you just set device number to 1, and it starts mining on GPU #2? If so, should be relatively simple. I can add it so that it automatically restarts after a set amount of time of 0 hash rate.There probably won't be monitor-switching support though (as in plugging monitor in to a different card to start mining on it).Also, fixed an issue on the OSDs moving by themselves when switching monitors that I'll include when I add the auto restart.

### Reply 7:
Got some resistors and tested out how dummy plug works.Updated with the OSD-moving fix, and with restart-on-idle.

### Reply 8:
Bump.

### Reply 9:
So when I get this going I get the phoenix miner box flashing saying:Client #1:0Restarting, please wait.Then the black command line box flashes the screen repeatedly.Anyone able to tell me what I am doing wrong?

### Reply 10:
Haven't tried this yet, but wanted to see if the starting video that uses GPU still hangs the comp? If not is it possible for the GUI to detect this and not hang the comp ;P that would be a great future to add!

### Reply 11:
Try this: <link> was getting them a little before, I thought I fixed it.Also, make sure your idle time is not set too low, like 5 seconds. It takes a few seconds for the miner to connect to the server to start mining, which is counted as idle time.It's an issue with drivers/phoenix I think. Not fixable with GUI.

### Reply 12:
Yup thats the version I am presently using.I literally just downloaded phoenix miner unzipped it then ran the gui front end.Are there any other steps I need to take?I would pay a bounty if we could get all my cards <truncated> for email chatkingfisherb90 for aim

### Reply 13:
Setting affinity of all instances to one core is coming soon.Any preferences to start at 0 or 1, for the first core?I'll have it start at 0 for now, since both Task Manager and Process Explorer start there.

### Reply 14:
Well I got the miner going with 3 of my 4 cards, but when I enable my 4th card using ""screen resolution"" in windows.Note catalyst can see the card as can device managerI get the following error:Problem signature: Problem Event Name:APPCRASH Application Name:phoenix.exe Application Version:0.0.0.0 Application Timestamp:4918019b Fault Module Name:StackHash_0a9e Fault Module Version:0.0.0.0 Fault Module Timestamp:00000000 Exception Code:c0000005 Exception Offset:72747369 OS <truncated> Locale ID:1033 Additional Information 1:0a9e Additional Information <truncated> Additional Information 3:0a9e Additional Information <truncated> on aim <truncated> on gmailWill pay 1 btc to solve this error

### Reply 15:
Also how do I move the OSD # windows so they arent all on top of each other or to another part of the screen?When I click the Click Through OSD. it doesn't toggle through them or let me drag them am I doing something wrong?

### Reply 16:
Click and drag them. The last window created (last client running) is set on top, and gets dragged first, then the one below it, then the one below that, etc.If that doesn't work, click the Click Through button, and repeat the process.That button toggles the click-throughness of the OSDs, as in, click it, you can click on the OSDs, click again, clicking on OSDs translate to the window below it.

### Reply 17:
Hi! I tried your GUI Miner and the only thing I can't seem to get working is the CliCk through OSD. When I click that nothing shows up. And btw, my card is running but only at 80%. I have a 6850 which runs perfectly with the Phoenix Miner @ 263 Mhash/sec @1000/300 1.155v. Maybe you could check? Thanks!

### Reply 18:
It should automatically pop up when you hit the Run button, one OSD for each client.If you've never moved them, they should be on the top left of the screen.

### Reply 19:
Yup, but as many times as I click the click through button it always lets me click through and not drag. I am hitting the click through button and dragging the icon underneath each time rather then the OSD window.Also any idea about why the miner crashes when I enable my 4th card?I get this error:Problem signature:Problem Event <truncated> <truncated> <truncated> <truncated> Module <<rest of thread truncated>
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17206,"Date: 2012-07
Topic: Mining hardware and battery backups (UPS)
### Original post:
So I've run a couple of dedicated mining rigs using GPUs for about 9 months, have recently added one BFL Single with 5 more on the way, a 6 BFL SC Singles coming (whenever they're released lol). To make a long story short, I can't run BAMT or scripts on my boxes, I have to run Windows with system drive encryption. In all the properties I've lived in here in FL there's these once a week at least 1-3 second transient power drops that cause all my hardware to reboot and sit idle until I get physically sit back down at it and get it all started up again. This usually takes 8-16 hours before I can get to it.So for this reason and with all this BFL hardware coming I finally dropped $200 bucks on an APC BX1500G 1500VA battery backup at my local Staples yesterday. I connected everything up and everything appeared to be working perfectly. However I noticed pretty quickly that one of the GPU miner boxes now crashes (video output just freezes, unit stops mining) every 30-120 minutes. It uses about 180W at load, has a single 5850 @ 915/300 (stock volts) and uses <link> for the PSU. I've had no problems with that PSU and it work's perfectly. I did notice right when I setup the APC UPS that that<rest of post truncated>

### Reply 1:
I run 5 APC BR1500 1500VA UPS for my FPGA cluster. It is good for providing <truncated> power; however, the 1500VA is really only good for about 700 Watts of power to the GPU/MB/etc. It's rated for about 850 watts, but counting PSU/UPS inefficiencies, it won't give your GPUs 850 watts. To be safe, I run them at about 650 watts each and is stable as a rock. If you're hooked up to the battery, and you go over the battery maximum, it will cut power (overload). To see if you're overloading the battery, you can try plugging it in to the surge only plugs to see if your GPUs are still crashing. If that doesn't solve your problem, then it may be a defective UPS.

### Reply 2:
I only actually draw no more than 400 watts so overload shouldn't be the problem. I think it's something quirky with just that one Antec 380W PSU; I put the 7970 in the other box and it's run all night without problems. Only that one box with the Antec PSU has problems - the rest are Seasonic or Corsair (rebranded Seasonic) with the exception of the HP Slimline which is just an OEM unit. That's also working without any issue it seems.Still not certain if my hardware isn't being slowly damaged. A lot of people run these UPSes so it should be fine I would think - then again if it was exactly the same power then why is the Antec so unstable? Odd.Thanks for your feedback CA Coins. I'll try just the surge only on the problem box and see what happens.

### Reply 3:
You're welcome. It can certainly be the PSU, but UPS should be pretty safe. Good luck.

### Reply 4:
Where I live, we have these few seconds power loss quite often. Will a device like this help?<link> I understand the purpose of devices like this is it has the capacity to store power for several seconds and also help save power especially if using devices with motors. Does it really work as claimed?

### Reply 5:
I decided I couldn't afford to UPS all my rigs. So I set them to reboot on power failure and added cgminer to startup programs. Along with teamviewer most power related downtime is minimised

### Reply 6:
I noticed that switches are vulnerable to power spikes - some rigs can reboot, some would keep mining - but switches just hang bringing down communications for all rigs, so I put all mine on a small ups

### Reply 7:
that one rig that crashes.. it only crashes while on battery power?also, i should think the PSU shouldnt make abnormal noises while on battery, I have 3 rigs on APC UPSs and none make noise (one is an antec earthwatts 650 green).try swapping the power cord on the noisy PSU, they can go bad (corrosion on the plug, internal fraying etc)

### Reply 8:
Thanks for the continued advice guys.To update you, as of a few days ago I stopped running both GPU miners because I'm selling/reusing the GPUs in them. I found out that the miner box with the Antec PSU was never stable on the UPS, even if it was on surge only. It froze up on idle too, however it took a lot longer (about half a day). The other miner box worked perfectly as does the BFL Single and the media server, both have been running now for almost 3 weeks with no issues whatsoever.So unless by 5 Singles that are on their way via USPS have problems with this UPS, I'm going to call it case closed for now. I'm out of the return period for it now anyway - I may follow up with Antec and/or APC sometime regarding these issues but I'm going to be moving the BFL Singles to a different room where they'll be the only thing on the UPS anyway, and I'm assuming the power bricks that they ship with will work fine as the current one does.Thanks again for your insight everybody

### Reply 9:
Well, your UPS is only line-interactive, meanin<rest of thread truncated>
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    ""hardware_name"": ""Corsair PSU"",
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  },
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    ""hardware_name"": ""HP Slimline"",
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  },
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    ""hardware_name"": ""Antec earthwatts 650 green"",
    ""hardware_is_owned"": true
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22100,"Date: 2017-12
Topic: One Temp Chip Missing Antminer S9...
### Original post:
Hello, I just bought an Antminer S9, it was running fine for 3 days, decided to change the wire for a better wire since the one I had wasnt really good. I turned it back on now and I saw that one Temp Chip is missing, so basically im doing 9-10THs instead of 14THs... Anyone know why is this happening? Thank you.

### Reply 1:
Probably a board failed? That happens a lot.

### Reply 2:
That's most likely the case. Seeing how the Antminer S9 has such high hashboard failure rates it's not really a surprise.The only thing you can do in this case is accept it or contact Bitmain to RMA it. I'm not sure what Bitmain's policy for hashboard failures is though because I personally haven't had to RMA anything.You should take into consideration the amount of time it will take to return it and get a new one as well if you decide to do that.

### Reply 3:
U mean u change the ethernet wire?Change it back to the old ethernet wire.I had a hashboard show up after a better ethernet wire was used. Weird but true and this happened on 2 different miners!!

### Reply 4:
Paying for a repair is another option. In bitmain site it says the S9 you need to ship the entire unit, I won't do that. I opened a ticket with them but it's moving slowly. Meanwhile I'm trying bitmainwarranty.com and I'll report back what happened with them. I may need to pay $250-$300 for the repair though In case another board fails I probably will have bitmains response by then

### Reply 5:
My board appeared after i changed ethernet wire and this was also the case for woodginns. I know it sounds silly. I changed a right angled one to a normal higher quality piece.

### Reply 6:
Please stop this nonsense already. You posted this BS 10s of times.

### Reply 7:
It isnt nonsense and it has worked for at least 3 people now. I have tested and it is the ethernet wire for that miner. I thrown it away and bought quality ones. Before that, I have resetted multiple times (all 3 reset types), changed to 2 new bitmain PSUs and new psu cable. That didnt work. It is that ethernet wire. For some odd reason, lower quality ethernet wire can cause the miner to only show 2 hashboards.

### Reply 8:
It worked!!! Changed the Ethernet cable and the chip went back on... thanks a lot guys!

### Reply 9:
I see. Glad it worked for u too man. Welcome

### Reply 10:
Thank you so much!!

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23378,"Date: 2020-12
Topic: s17 pro (50th) Not finding but two boards
### Original post:
Copy the log and when replying here use the code function # on the reply toolbar then paste the log into it.FYI this is a common problem. Just look through the various posts here about it...A good place to start is this one

### Reply 1:
<link> are the two pics I have. I do not have physical access as I am relying on someone else to help me at the colocation facility.

### Reply 2:
All,I have an S17 Pro 50TH model that doesn't seem to want to start but two hash boards. I'm new to the forum and do not know how to post the picture of the log yet. I am looking for any assistance. At first I posted this in the wrong place but I have found the correct location now.Thanks,Scott

### Reply 3:
Those two links need access permission, at least use a proper server to upload those image, use <link> or <link> but eventually you going to need to post that kernel log to get a definite answer, you don't need physical access, just ask whoever took those pictures for you to copy-paste the kernel log after the miner has been online for 30-45 minutes.Tell them to find the kernel log at this extension /kernelLog.html, so it's <truncated> you get the log, use the code function to paste it, something like this:Code:Kernel log here

### Reply 4:
Just additional from the above post. You can just copy the kernel logs and paste them here <link> then get the URL and post it here.If you don't know where's the kernel logs you can check this image below as a reference.

### Reply 5:
Sorry about the pictures. I thought that they have been set to public view, I am new on here so I am still learning. I have written an email requesting the logs so I will post them as soon as he sends them down to me for review. Sorry about the NOOB mistakes on the forums.

","[
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10840,"Date: 2019-09
Topic: Protection of miners due to voltage fluxes.
### Original post:
Depending on what kind of ""protection"" you want. The simplest and cheapest is just cut the power when the fluctuation exceeds a threshold. For miners this might be good enough, and certainly better than nothing (as most miners operations are). There is a variant of this with adjustable timers for when to restore power, make sure to use these, you don't want hundreds of units coming on at precisely the same time...As for actual power correction (as in transformer) which you seem to seek, its very expensive and unscalable for large operations. You already had one of those so you already know how expensive they are, but yes they'll do a great job protecting your PSUs.When the large miner is faced between the price of replacing a PSU or purchasing one of these for each unit, you can guess what the answer is.But the simplest ones that just cut power and have an adjustable timer for restoring it, should not be neglected.Don't bother with UPS, for the same reason solar power users shouldn't bother with batteries and stick to their grid tie inverter. Batteries are too expensive and die too quickly (3 years). Except perhaps Tesla's powerwall, but those are probably too expensive and unneces<rest of post truncated>

### Reply 1:
So we have an issue in Clifton NJ we are running 3 phase and we have had a srop to 190 volts on a regular basis.This unit will do about 3000 watts none stop but it is garbage inside.<link> does work very well on the s17pro we have. But it has 14 gauge wire inside and I don't trust it to doe an m20s or any 3000 watt unit.Below are some larger commercial units.<link> are 1 phase. but I could also get a 3 phase unit.

### Reply 2:
If it is infrequent, this could be a lower cost option to use while you scream at your utility to fix the issue. It'll shut down power if the voltage drops too low, and can be set up to restart after a delay once voltage comes back up. Not ideal, but it'd take a long time to pay back several thousand dollars for those voltage regulators.<link>

### Reply 3:
This is a hard money call for me.15000 watt model will do my 3 whatsminer's which take 10000 watts and it will do a 2000 watt miner say the inno t39that is about 220th of my 900th but it is 1925 usd.the cheapo amazon is 179 and will do some the s17 the t17 the inno t39 the avalon 1041but I do not think it can do the 3300-3400 watt units . I could order five of them for 900 but they take up space. etc.At the moment both inno's dropped out 24 + 39 = 63 th and part of the m21s dropped out 18th = 81th along with 2 s9's81th + 27th = 108th. I know it is power fluxes since the amazon linked regulator shows we dropped to 190 voltswhen this happens some psus won't work and I get drop outs.

### Reply 4:
I'm impressed with the efficiency of the TSI regulators, they claim 96% - 98%.<link> find specs on the Amazon one, doubt it is that good though.You could buy a single phase monitor and wire it to control contactors for all your equipment that has issue with low voltage, and spend the $1800 left over on some more hashrate.

### Reply 5:
The one on amazon has run an s15 and then an s17pro perfectly. Even with multiple drops in volts to 190. But it is wired poorly. I opened it and it has 14 gauge wire throughout. Including the power input cord. So it is never going to do 5000va but it does do the s17pro at 2225 watts with no issues. In a magical world where everything goes my way I would have 60 s17pros on low speed and use 60 of the amazon gear. I have enough shelf space . And would do about 2.4ph at about 90kwatts. The reality is I can't do that. I suppose I could monitor the power and see how often I sag.

### Reply 6:
Hmm if I get a larger industrial one for 1900 it would cover 15000 watts considering that a s17 is 3000 and I could protect 6 s17's with the industrialit does scale if they last. 6 s17's are close to 18000 + 4500 trump tax = 22500 if the transformer does the job it is worth it.turning off all the gear is not ideal. If the amazon one was just a little better and could do the big 3500 watt gear it would be worth it.

### Reply 7:
Phil did you order from alibaba?

### Reply 8:
If voltage drops too low 10% of the time and you shut down all those miners that drop out (144th?) every time voltage dips , even with free power that is only about $3.50 lost per day, or about 18 months to pay back the $1900 for the regulator (if price tracks diff). Even with the all s17 scenario, with power cost you're probably still taking a year.On the other hand, the regulator isn't going devalue like a miner over time. When the s17s are no longer profitable, the regulator might still be needed for the the s17s replacement. So thinking about it that way, a year or two to pay back the investment isn't really that bad.

### Reply 9:
The 15000 watt unit is probably good if it lasts 3 or more years. I am talking it over with a few people.At the moment the vo<rest of thread truncated>
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4133,"Date: 2012-07
Topic: Pico FPGA Hardware Beats GPGPU in Password Cracking
### Original post:
Who ever heard of this hardware? It may be used for mining?<link>

### Reply 1:
I have been in contact with Pico Computing, about a year ago, to investigate mining on their FPGAs. But it turned out that their LX150 boards ($1200+ per LX150) are insanely expensive compared to, say, Ztex (starting around $220 per LX150).

### Reply 2:
Yeah, Pico seems to be good at pushing PR and perhaps their support is top notch (only their customers know) but their hardware markup is very high.

### Reply 3:
there even was a small rig manufacture that wanted to build a RIG out of these things. I can't find it anymore

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16773,"Date: 2011-07
Topic: Miners Not Recognizing 3rd Card
### Original post:
Ok, so I have a rig with 2 5830s, everything's running fine. Now, I added a 6870, updated drivers, and all that, and am using a PCIE x1 to x16 adapter. Windows, device manager, and CCC all see all 3 cards. But when I try to use device 0 and device 3, device 0 is the CPU and device 3 isn't seen. I tried pausing at cmd, and Poclbm only sees the CPU and 2x 5830s. GUIminer also only sees the 2x 5830s and the CPU. What is the proble? Should I try wiping all GPU and ATI drivers and then re installing? Thanks!

### Reply 1:
are you using dummy plugs?switch to Linux?I am running Windows 7 with 2 5830s, a 5770, and a 6870 (4 cards) all working fine, overclocked, overvoltage, stock drivers, and PCI>PCIx16 adapters for 2 of them using phoenix. I do have to use dummy plugs though.

### Reply 2:
I have dummy plugs in all 3. I had to use the extend desktop function under properties before CCC would see them. Gonna try reinstalling all drivers now.

### Reply 3:
Fixed. And still using Windows! Apparently CCC 11.6 doesn't work with SDK 2.1, so I'm using 11.6 and 2.4.

### Reply 4:
ASAIK HD6000 wont work on sdk 2.1

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    ""hardware_name"": ""SDK 2.4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HD6000"",
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]"
11037,"Date: 2021-11
Topic: Overclocking  Bitman Antminer T17 with non-custom firmware
### Original post:
Hi all,I'm fairly new to mining and recently purchased a used Antminer T17. The miner is working fine @720MHz. So, I would like to overclock it with non-custom firmware. My current version:Kernel Version: Linux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018File System Version: Thu Apr 23 16:29:07 CST 2020Does not allow user-selected frequencies. I would like to run the miner at 800 to 900Mhz.Can someone help with accessing user-selected frequencies with the current firmware or advise how to obtain native Bitman firmware that allows user-selected frequencies. Thanks in advance,

### Reply 1:
Have you bothered to read *anything* here regarding the S17's? They have a horrible failure rate and yet you now want to push them even harder?Terrible idea...That said, if you check the Mining Software area - where this question should have been posted to begin with - you will find what you are looking for.

### Reply 2:
Thanks for your feed back.Yes. I'm aware of the risk of overclocking the S17 and the T17, and I will review the 'Mining Software area'.

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22949,"Date: 2019-05
Topic: Antminer S9 Chip Repair Questions
### Original post:
Hello, I have watched some videos that guides you to detect faulty chip and replace them. First they use Fixture app and then confirms with Multimeter and here I have issues. I have a question I wonder. Do we test resistance values with multimeter while board has power or no? Also, can we directly use multimeter to check 63 ASIC without Fixture test to find faulty chips?Im asking about that because for example a guy gives table for resistance values and when I check with my multimeter I get like way lower values for every asic. His table says 780 and I get 360 for CLK on every Asic. But I do test them hashboard power off. So if anyone have more insight and even some more tricks about this detect and repair process, I would be appreciated. Thanks

### Reply 1:
Unless specifically instructed otherwise, resistance measurements are ALWAYS done with power off.That said, depending on make & model multimeters can apply different voltages when doing resistance checks and that will affect what you see: if they use a very low voltage then semiconductor junctions may not turn on vs a meter that uses a higher voltage. That will definitely change your readings.Best thing to do is take a set of measurements on a known good board and use those readings as your reference.

### Reply 2:
Thank you for the reply sir. I have took my time and measure all the chips' resistances and found out one of them shows x2.5 higher than rest. So I assume that one is the failure chip on board.

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    ""hardware_name"": ""Fixture app"",
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    ""hardware_name"": ""Multimeter"",
    ""hardware_is_owned"": true
  }
]"
16218,"Date: 2022-03
Topic: Investing In Hardware
### Original post:
Hello everyone, I am new in investing and trading. So, what I think about in a recent days is investing in hardware. Bitcoin mining, e-sport and around e-sport things (like streaming etc.) What do you think about that? I think that hardware will show grow in prices only.. Share your thoughts on this.

### Reply 1:
You can invest in such devices if you expect a problem in the supply chains, have experience and trust to be able to sell them at the right time, but in general electronic devices are not an investment because their value is declining over time due to the presence of better and more advanced devices always, in addition to the increasing difficulty of Bitcoin mining.So unless you have experience, a good plan and know what you are doing, buying a Hardware hoping to make a profit is a wrong strategy.

### Reply 2:
Yup. Exponential growth has only just begun, it's early still, and the exponential age is yet an acorn. i suppose massive deflation is on the horizon.

### Reply 3:
Do you mean investing in the mining hardware? If yes, I do not think that will be worth doing because we know that the hardware companies release a new graphic card almost every month and the mining companies can also release the newest hardware to mining. So maybe it will be better if you allocate your money to invest in coins such as bitcoin, ethereum or bnb. That will be worth doing since bitcoin and altcoin can increase again this year. But that is up to you because we can only suggest to you what is the recommended thing that you can do to invest in crypto.

### Reply 4:
I disagree it is smart to invest in hardware but you need to search out deals and be patient. Every single person who has chased deals at highs should still recover their initial investment but the runway to do so is longer. If you are patient and ensure you are not overpaying you will be fine as long as you dont put yourself in financial hardship. I have been doing this since 2017 and have heard the same people say how mining is not worth yet I have more BTC and ETH now than I ever would have if I just bought and held.

### Reply 5:
Well, yeah if you did this from 2017 and a large increase in price of BTC occured of course its worth it... Worth it is also relative to the person. How much effort it takes ONE person is not the amount it takes the next

### Reply 6:
Yeah you really need to know what you are doing if you think you can buy 10,000 in mining gear and flip it for 20,000 in six months.BTW July 2020 Ebay was selling bitmain L3+ miners with a psu for about 100 USDSame gear is now over 1000 USDI would argue mining gear is very inflated do not buy, but If you purchased in Jan to June 2021 you likely did okay.So if you buy today will a piece of gear be 2x in a year .I have zero idea.

### Reply 7:
So I'm running a poll for a friend of mine on this similar topic, but for used.In short, is investing in used hardware worth it for mining? This may be used as a study on a large scale news article at MediaPeanut (A friend of mine is publishing there)Just hoping to use some of your guys answers in the published article. If I do, I'll reach out to each user for approval. I just sent a poll out on here, but not sure how it works lol

### Reply 8:
You should not trust this guy so easily because of this: <link> ALERT - Buyers beware!

### Reply 9:
today is not comfortable time to buy mining hardware.today we see dump of altcoins, good time to invest in crypto, and then you can buy hardware from profit.

### Reply 10:
Yes I also think it is best to invest in coins.

### Reply 11:
If you are planning to invest in mining hardware, then I think this is not a good idea. Technologies tend to become obsolete and cheap very quickly, which means that newer and more productive hardware will appear on the market. Against this background, what you bought earlier will be of little demand, which means it will lose in price. From this point of view, it is not profitable, which means why such an investment. Another story if you will use this hardware, then your activity will be called not investing in hardeware, but in mining. In this case, you will profit from mining and then from selling hardware if you do it at the right time.

### Reply 12:
When you say investing in mining hardware, do you mean to buy a mining machine and wait for the price to rise before selling it, or do you mean that you have a suitable venue, so you are going to buy a mining machine for mining?If it's the first, I advise you not to invest in bitcoin hardwarebut if you have the right place to mine, then I think any time is the right time, because the return on investment of mining is higher than most other industries.

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    ""hardware_name"": ""bitmain L3+ miners with a psu"",
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10650,"Date: 2017-11
Topic: C13 to C19 Power Cable
### Original post:
So the Tripplite PDU I got takes C19 cables. The APW5 PSU that Bitmain sent is takes C13 cables. For the life of me I can't find C13 to C19 power cables online. There are plenty of C14 to C19 and C13 to C20, but not a single C13 to C19. Is there a reason for this? A buddy of mine who is an electrician says he can make them for me so I may go that route.

### Reply 1:
The power distribution unit has C19 connectors.The cable you want to connect to it has to have the C20 connector.So you need a C20 to C13 power cord.

### Reply 2:
The PDU has C19 connectors yet I want a cable with C20 connectors? Don't I need a cable with C19 connectors to match the C19 connectors on the PDU? That's what everyone is telling me at least, makes sense doesn't it?

### Reply 3:
No that is like swinging two dicks against each other, doesn't work that way.It helps to understand if you get familiar with these standards <link>

### Reply 4:
Here is one power cord example what I mean <link>

### Reply 5:
Beautiful analogy lol.So to be clear, this bitmain power supply which accepts a C13 connector and this tripplite pdu which accepts a C19 connector will be able to use this C13 to C20 cable from amazon?I just didn't think that's how it would work. The power supply accepts a C13 connector so the cable I got (which fits) has a C13 connector on it, not a C14 connector, you know?

### Reply 6:
The PDU has C19 connectors. You can fit a power cord with C20 connector to it.The Bitmain PSU has a C14 connector. You can fit a power cord with C13 connector to it.So that is why you need a C20 to C13 power cord.When you understand the connector names right it becomes less confusing.

### Reply 7:
Yeah, I'm not trying to question your knowledge or anything like that since you say you're an actual electrician haha, I'm just ignorant when it comes to this specifically. I'll order the cables, hopefully you're right It would make sense though since C13 to C19 cables literally don't exist anywhere on the internet.

### Reply 8:
I use that same PDU and the power connector that Haggs mentioned to connect to my power supplies (<link> is the ones I use)

### Reply 9:
Yes. You know the exact hardware that you have and now you have the information resource to buy the right cables.

### Reply 10:
Thanks to both of you, my mind was racing trying to figure out why I couldn't find a single C13 to C19 cable on the entire internet. Just ordered these: <link>

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14079,"Date: 2011-05
Topic: Not POSTing?
### Original post:
Hey everyone,So I just received new parts today. I booted it up for the first time but nothing showed up on screen, not even black. My TV just said no signal.I have the MSI 890FXA-GD70. PSU is Corsair 950TX.First, I put my AMD Sempron in and installed the heatsink, went fine.Installed one stick of DDR3 ram, 2GB, no problems there either...Installed a 6870 in the first slot, should be correct too.Attached 24pin, 8pin, and 2 6pins to the gpu.I haven't done anything else at all. I used the onboard power button to boot, so I didn't connect any of the case things.Am I forgetting anything or what's the problem?

### Reply 1:
Any lights at all?You also didn't mention plugin it into the wall or if the PS has a switch.More detail is needed.

### Reply 2:
read the numbers in the LEDs and check the mobo manual. try using slot 1 for the card. its the one in the middle of the board.

### Reply 3:
You litle bastard . You posted this on overclock.net too. That is all I have to say though as I am not sure your problem, maybe try a difrent gpu to see if it was doa.

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    ""hardware_name"": ""Corsair 950TX"",
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    ""hardware_name"": ""AMD Sempron"",
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    ""hardware_name"": ""DDR3 ram, 2GB"",
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    ""hardware_name"": ""6870"",
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22843,"Date: 2019-01
Topic: My antminer s9 don't recognize Please help.
### Original post:
Hello. I just sleep for how many years after the burst price increase and now came back just to ask about the miner. i received 2 s9 refurbish few days ago but the one miner seems not detected i cant find the ip only one miner working fine and running until now.

### Reply 1:
Have you tried to test the s9 first(the not recognize one) to scan while the working one is disconnected? I feel that one or both s9 is set to static IP that is why one of the miners doesn't recognize. So you must set the miner's network to DHCP to set the IP automatically to dynamic IP. If you don't know how to do this follow this step. - first don't connect the one working s9 first and connect the not working s9- after that scan the IP if you find the IP it means that your both miner have the same IP that is why you can't detect another miner.- now login to the IP and go to the network then settings you will find the Protocol and change it from static to DHCP apply then restartThen do the same in your other s9 just to make sure they have both Unique or dynamic IP.

### Reply 2:
chances are that miner has a static ip that is on a different subnet / gateway . the only work around would be to reset the miner, this will take it to default setting including dhcp, then it should work fine.

","[
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10874,"Date: 2020-03
Topic: Canaan A1066  Pro Review. (soon )
### Original post:
spacing

### Reply 1:
Buysolar, myself and another member may be getting some test models of the a1066 pro.We have been sending emails back and forth with avalon. Steve Mosher is working with usSo farmy 2 A1041 beta models still work finemy 2 A1066 models work fine.They have worked well for six + months.We did get a third one sent from Finland (HaggsFin) an a1041 beta modelUS post office lost it for a while and when it came it was a dud as the packing had signs of rough handling.So I blame the dud on US post office.I am calling the older gear at 4 good of 4 .2 A1041's2 A1066'sThe A1066 pro should be more powerful then the A1066<link> watts$1100

### Reply 2:
spacingAt all feel free to post.We hope to see this gear next 1-2 weeks.

### Reply 3:
55th3300 watts$1100based on the above it is $196 more expensive than a T17+ at the same speed, and 500W more(ish) (realistically only 300).I understand it is good to have competitors as it will advantage us as buyers with better prices, but same speed for more money and watts, why?are they long-lasting?

### Reply 4:
My lone t17+ has a dead board.More then 3 others have bad t17+ units.So far it is an unreliable miner.So the question is how reliable is the a1066 pro well we hope to find out when we get the samples.Avalons have tended to work well over the years.

### Reply 5:
Interesting, what model did you get? Did you even talk to your distributor or Canaan about it?I and many others have the exact opposite results. I *used* to run BM gear and up to the s4 they were great, come s5 on up lots of issues culminating with all 4 T9's and 15 S9's I had each losing multiple boards. Initially repair service from Bitmain and then through Denver-based BitmainWarrenty was decent but quickly went to hell in a hand basket.Switched to Avalons starting with the A721 and have not looked back. Currently running just over 500TH of Avalons ranging from A841's to the A1047's and aside from losing 2 fans on my oldest and now retired 721's ZERO problems.You will find that the few folks here who did report problems were taken care of quickly and in a professional manner either by the distributor or Canaan directly. The miners are modular and easy to troubleshoot, find the problem and Canaan will get replacement parts right out to you.

### Reply 6:
Seriously it is true.Why cant someone be criticising the Avalon? I had this experience and I am def not out to hurt Canaan. I do own exactly 2 of these miners. And it is my experience. Some things you say are completely untrue.Calling me a troll and a hire, seriously. Getting posts deleted and stuff. Ehh?! It seem to be yourself that is biased if anyone. The long lead.time is absolutely true as I inquired about buying their new model and they recommended me to order already 3 months in advance. I do keep an open mind about the A1066 and look forward to hear how people experience this machine.

### Reply 7:
I kept the trolling posts below. His info is wrong they do not have a long lead time and have gear in stock as type.At first he claims 1 bad unit.He then claims 2 different bad models.If someone is out to get or hurt canaan hiring trolls is but one idea.It is obvious that all asic builders will have a tough time. My belief is this person freddy2020 is lying about canaan to hurt sales. Note the bold type.

### Reply 8:
off topic the thread is not on the new model it is on the a1066 proat first you had 1 modelthen it became 2 models.So I detected multiple critical points that are not consistent.As for reliability the four I own are reliable.I have 90 day screen shots of them. They had outages only when my whole farm was turned down for cleaning and maintenance .Show me real evidence you had constant down time on your 1 now 2 units. Or leave the thread alone. I notice you are plugging the s19 hard on the bitmain thread.

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    ""hardware_name"": ""A721"",
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    ""hardware_name"": ""A841"",
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    ""hardware_name"": ""A1047"",
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12044,"Date: 2012-09
Topic: Cgminer Ubuntu with 7970 and 6950
### Original post:
Hi,I am new to cgminer and as well as Ubuntu. I was able to install both and worked with my 7970. Currently with 550 Mh/s (925/775).But when I tried to add my old 6950 to my motherboard, it does not seem to work with cgminer. It only shows GPU0 which is the 7970 card.I am not sure if I did it right, is there a setting for the card combination?Thanks.

### Reply 1:
Looks like you have not configured the second card as I see no mention of you having done in a terminal window sudo aticonfig -f --initial --adapter=all then rebooting so the new dual card xorg.conf file will be used.

### Reply 2:
Thanks for the response.I was able to update it now and it is working.Though my voltage does not seem to update using cgminer.Can aticonfig/amdconfig udpate the voltage?

### Reply 3:
Good to hear and I do not believe that the linux driver allows you to change the voltage on the 7 series of cards at this moment.

### Reply 4:
Sorry to ask you the specifics but can you post the parameters to adjust the voltage and how to view it.I've searched it on google and only found out how to adjust the core and memory clock.

### Reply 5:
You may get more CGMiner support if you post in the CGMiner support thread.

### Reply 6:
Memory clock is easy as you have found no clue on the voltage any time I have ever done that I have flashed the card BIOS which you cannot do on a 7 series card right now..

### Reply 7:
I see thanks.I was able to adjust my voltage for my 7970 using cgminer but for 6950 it does not work. I guess i'll be going back to windows for mining.Thanks guys.

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16549,"Date: 2023-07
Topic: Buying asics soon
### Original post:
I will be buying three asic miners soon and I've lost my old asic guy from HongKong china, if you guys have anyone in this country that's a reliable Asic miner dealer please drop me a contact..

### Reply 1:
forum member mikeywith is good.<link>

### Reply 2:
Nice decision my friend. I really don't have a contact that deals in those areas but I would recommend you to buy good Asic miners like Bitmain Antminer S19j Pro as they are good for future-proofing your mining operations. It depends on the budget then you should go with this miner and purchasing three of them will allow you to have around 300 Th/s and that's a lot of processing power.

### Reply 3:
Hi, I am from Canaan official. We can ship miners to HK. My telegram <link>

### Reply 4:
One of the people that have experience about bitcoin mining and miners on this forum is philipma1957. You can follow his advice. As for others, I do not know.My suggestion is that you can also look for sellers on Chinese online sites or offline resellers. I have seen ASICs on AliExpress before and I know that there are many legit online sites in China that you will know which you can use to order for the amount of miners that you want. If you want to buy in bulk, it is better to contact the manufacturer directly. Like Bitmain. Most ASICs manufacturers are located in China which should make it easy for you to get in touch with any of them.I will advice you to avoid scammers that will start to send you PM that they can help you.

### Reply 5:
This is bad advice, buying Asics from the likes of Aliexpress is very risky, besides, the majority of brand new gears are now in HK not in China, none of those resellers on Aliexpress/Alibaba own a single brand new gear in China, they are either scammers or just brokers who will ship you the gear from HK via another distrutor, so at best, you will be overcharged, at worst, you will be scammed.Bulk for Bitmain and MicroBT is either 4 or 5 digits, anything short of that is not considered bulk and you will have to pay the same prices listed on their website.Indeed, unsolicited messages that promote some selling are likely to be scam attempts.Thanks Phil, always great doing business with you.

### Reply 6:
Not top be trusted. Seems suspicious. I would rather buy from reputable stores or membersOffordscott was also another good dealer, but he got banned from the forum. Op if you are still in need or window shopping, you can try checking him out as wellTwitter - <link> - <link> - <link>

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10638,"Date: 2017-10
Topic: Server Power Supply Interface Board - for standalone miners and GPU rigs
### Original post:
First ""complete"" prototype finished and undergoing testing; as soon as a reliable source of parts can be found I'll start on actual production. If anyone's got an ""in"" with Molex or FCI I wouldn't mind a bit of assistance tracking down both parts and information.This board is designed to mate with a Dell Z750P power supply from a PowerEdge 2950; said supplies can be found fairly readily on eBay in various conditions for as low as $12. They are rated to provide 62A at 12V at 90% efficiency. This interface board provides- Screw terminals for +12V and GND so you only hook up what cables you need.- Additional output capacitance for voltage ripple and burst current buffering- Manual fan speed control (the stock full speed is quite loud)- Auto-powerup which can be triggered by an external signal as low as 3V, disablable by a toggle switch- Manual powerup from a toggle switch. Because toggle switches are legit.- In-signal and Out-signal headers which allow chaining, so one supply can turn on multiple others- Current share feature which should allow multiple supplies to cross-regulate and evenly distribute high power loads in parallelI've had one of these supplies running a pair of full-ov<rest of post truncated>

### Reply 1:
Glad to see I'm not the only one doing this.For the molex crimp pins, I used mouser 538-39-00-0038-CT, I used 538-39-01-2060 for the 6 pin connectors but they have one square plug that didn't match my video cards but worked with the cube. The big issue is making all the connections, it's too time consuming to do by hand and the edge connector I used was $6 plus $0.27 per pin. Overall it's worth it for my own use because I already had the tools but the labor and liability keeps me from selling any.

### Reply 2:
I've been playing around with hacking server supplies since probably June, first for GPU and now for standalone. Decided it would be a better way to go to make a pluggable interface board than make all the changes internal to the PSU. Faster, easier and <truncated> I'm working with has pins and blades, not an edge connector, but I'll probably start looking into making for the HP 850/1000 that everyone seems to love from their Blade backplanes.I'm guessing you're using a 12V relay to kick the supply on from external source?

### Reply 3:
Close, I went with a 5v relay. I do like these HP power supplies, they were basically free.

### Reply 4:
Please add at least 2 mounting holes, for M3 or 6-32 bolts.

### Reply 5:
This is really great idea and I just hand-on 2 HP DPS-600PB. I like to use matched connector too, but it is hard to found any where.

### Reply 6:
Whereabouts and what for exactly?

### Reply 7:
Send me a PM with the part numbers and quantities you need from FCI and Molex. I wouldn't mind helping you out with developing the manufacturing documents and test procedures as well.

### Reply 8:
I design and build open-air cases made from aluminum t-slot extrusions, and I could foresee someone asking me to build a case for them that uses this board. Two M3 holes in a straight line anywhere on the board would suffice.

### Reply 9:
Gotcha. I'll see about probably widening the board slightly and adding screw holes at the corners; these can double to hold a plastic baseboard under it for insulation in standalone applications, and for mounting to frames in your type of application.

### Reply 10:
You know im on board 2 Bitmain Blades + 2 dell PSU + spotswood case?

### Reply 11:
Two PSU for redundancy? One of these supplies should handle two or three blades itself at stock clock, if I'm remembering the power specs right. That would be a pretty sexy setup though.

### Reply 12:
I think this is a wonderful use for all the industrial parts which have been EOL'd just because the speed/capacity/etc does not fit the needs of the large corporations with huge server farms and upgrade all the time, including lots of hardware from the government. TL;DR (just IMHO view on the computer hardware industry, as I had operated a business liquidating IT assets for almost 10 years)In fact since all these servers and parts that are in them were built specifically for industrial use they already optimized them to run 24/7 and at maximum efficiency so there was no need for those 80 Plus PSU, etc certification. A lot of these servers are sold at pallets at a time for very cheap and a lot of times they look brand new (it seems common for ""upgrades"" to be done every couple years so these are mostly barely broken in) sometimes it's when a company goes out of business. In any case these servers have pretty high end (at the time of purchase) parts like RAID, SCSI with mostly 10k rpm hard drives (80gb but not everyone needs tonnes of storage), custom designed cooling to fit dual cpu installations cool and even redundant PSUs all in a 1u Case.Most of these servers would work great fo<rest of post truncate<rest of thread truncated>
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    ""hardware_name"": ""RAID"",
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  },
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    ""hardware_name"": ""SCSI 10k rpm hard drives"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""1u Case"",
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22504,"Date: 2018-03
Topic: Avalon heat rejection management question
### Original post:
Hi all. Running a farm of 100+ S9s. Heat rejection for them is easy: Stick the rear fan through your cold/hot aisle wall and the issue is solved (cold air in from the cold aisle, hot air out to the hot aisle). Only downside is the power supply waste heat (7% of what is used, more or less) ends up in the cold aisle.I have (11) Avalons coming on Monday and I've been trying to figure out an equally elegant cooling solution for them. Alas their power connections are on the back of the machine, so if I played a similar game as I do with the S9s, I'd either need holes in the cold/hot aisle wall for power cables, or would need to put the power supplies in the hot aisle - which just doesn't sound like a good idea (and would involve some other minor redesign issues like moving power from the cold aisle to the hot aisle to avoid having the power cords going through the wall).FWIW - I'll be using Bitmain APW3++ power supplies for the Avalons, mostly because I have an excessive quantity of them. So many in fact that I've considered splitting them, with each power supply driving half of an 841. e.g. P - A - P - A - P... That would at least prevent power cables from crossing the back of the exha<rest of post truncated>

### Reply 1:
The Avalons have their power and data connector on the front and their fans exhaust out of the back. Unless there is some radical deisgn change I am unaware of that is how they have been produced since the Avalon 4 redesign.

### Reply 2:
Ah... thanks. Bad assumption on my part. That is great news.The resent BlokForge video at <link> made me question my sanity. Apparently they have the Antminer rejecting heat to the back of their setup and the Avalon rejecting heat forward. They compounded that with their stack showing the relative size.I'll comment more on that in the appropriate thread.

### Reply 3:
Adding some type of fan to the front to give more air on the intake does help with these Avalons and yes it is a challenge because of the wiring but you don't have to be perfect, as long as you are directing more air towards the intake it will help so you could be creative in designing something for each section of your miners or just get small fans that fit between the wires

### Reply 4:
You could turn those power supplies the other direction if need be and exhaust the heat in the hot aisle. That's how I have mine set up.

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    ""hardware_name"": ""Avalons"",
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  },
  {
    ""hardware_name"": ""Bitmain APW3++ power supplies"",
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17251,"Date: 2012-09
Topic: CGMiner 7950 only getting 490mh/sec Core@1040
### Original post:
hey crazyates d'you have a coin address that i can kick you a tip at?

### Reply 1:
<truncated> Thanks!

### Reply 2:
Does anyone else have any insights as to why im missing 20mh/s? It's not like im looking for that ""Maximum efficency"" I just want to see my card it 500.01MH/s

### Reply 3:
Can you post either your full command line arguments, or your config file? Don't need any pool info, just the GPU settings.

### Reply 4:
i run two HD 7950they are different revision but that i run themI hope I was helpful.

### Reply 5:
What sort of cooling are you using in your case/GPUs? Those temps are crazy low.

### Reply 6:
Stupid Trend Micro. I can't see the pic until I leave work.

### Reply 7:
mode by my own <truncated> this is summer addon <truncated> the room is 28C, outside 27C - 23:21day outside is 41C, room is 34C - 12:00I can't wait to come winter to overclock a little be more

### Reply 8:
I forgot to mention I use CGMINER 2.7.0 with kernel DIABLO

### Reply 9:
send me pictures of your case, will help you to optimize cooling.GPUs is<link> are the same, I buy them in 7 days difference, and they are different revision

### Reply 10:
I don't have a cooling problem (card stays below 90c, it's a single-fan model), though your temps in the mid-60s are very impressive. Having essentially an open-air case helps in that regard I built my PC for silence and as long as I stay within acceptable ranges, I'm not too concerned about the temperature. When I'm not mining, you can't tell my computer is on

### Reply 11:
It would be helpful if you stated your settings, so far i see intensity CG miner 2.7, And diablo kernal, Im using thoseLike holy hell, Your (according to that chart) hitting 547mh/s with a core of 1070What is the ""powertune"" 15?Fwiw im using this card <link>

### Reply 12:
Like I said before, I""m using a 7970, not a 7950, but I dropped the ""-v 2"" arg out, and I got +20MH/s. Try letting CGMiner decide what vectors are best.

### Reply 13:
v 1 seems to work the best, Bringing my memclock upto 1ghz gave me an extra 10mh/s

### Reply 14:
Well just trying to throw it out there. This thread has me playing with everything I can to get the most MH/s.

### Reply 15:
impressive. is that mineral oil immersed or what?

### Reply 16:
woo hoo!Acutually, Shappires latest line of cooling is really good.My XFX is running at core 1080, Mem 800, Fan 73%[4100RPM] Temp 78C room ambient temp is 27CInside a cheap $60 Xion case with 4case fans, 1PSU fan, 1 GPU fan, 1PciSlot CoolerFan for the GPU, One CPU LCU Radiator cooling fan Now with Intensity 7 and 9 giving same results, I am mining at 510Mh/s

### Reply 17:
I of 7 and 9 gave me similar results, but 13 gave me +10MH/s.

### Reply 18:
Seems to have worked... Sortof... It's really bouncy.. dropping 5 below and going 10 above..Shame how i have to be clocked at 1080 to get the meager 511mhash/sWhy the hell is nitrox hitting 54x+ with a 1080 core clock... Im trying to use all the same settings that he's using..

### Reply 19:
Check your CPU usage. Anything 10 or higher, and I get 100% cpu bug.

### Reply 20:
16%cpu usage at I 13, on a 6core 3.8ghz cpu, with the affinity set to two cores

### Reply 21:
Yep that's 100% on one core. Mine was 33% on a tri-core AMD, so that'd be 100% on one core.

### Reply 22:
So whats with nitrox getting 54xmh/s....I can mine at 1080 stabily, but i only get 515mh/s

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    ""hardware_name"": ""CGMINER 2.7.0"",
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  {
    ""hardware_name"": ""7970"",
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    ""hardware_name"": ""Xion case"",
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  {
    ""hardware_name"": ""tri-core AMD"",
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21990,"Date: 2017-12
Topic: Antminer s9 mining with only two hashboards possible?
### Original post:
Hello, I want to have one of my hashboards checked. Is it possible to runmy antminer s9 with the two good hashboards? Id appreciate an answer of someone who has already done it or that knows that this can be dobe with no harm to thw machine thanks

### Reply 1:
You can run it with only 2 functional hashboards but if you take one of them physically out of the chassis the cooling on the other boards will suffer. Air will take the path of least resistance and blow through the missing card spot instead of through all of the heatsinks creating hot spots on the cards.

","[
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    ""hardware_name"": ""Antminer s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chassis"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heatsinks"",
    ""hardware_is_owned"": false
  }
]"
21739,"Date: 2017-11
Topic: A question about how Bitcoin mining rewards work
### Original post:
What I am confused about is that many of the texts that I read regarding mining describe how a certain number of Bitcoins are released upon the completion of each block and that these are distributed to the node that completed it as a rewards, however I know that when people mine, they get a certain number of satoshis per minute. Are these two separate things, or is it simply that it is not that a single node gets the Bitcoin reward, but rather that this Bitcoin reward is divided among all of the miners as they progress in the block's development? Thanks in advance!

",[]
23795,"Date: 2021-12
Topic: Help to mining Bitmain AntMiner U1
### Original post:
Hi All ..I'm just the beginning of mining Masters please guidewhy this ?command I enter: --bmsc-options 115200:20 -o <truncated> -u tesdar.1 -p anything123.Is it wrong ?help me.... pic :<link>

### Reply 1:
Maybe try these instructions?<link>

","[
  {
    ""hardware_name"": ""Bitmain AntMiner U1"",
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  }
]"
10495,"Date: 2017-09
Topic: fix and restore antminer s9, L3
### Original post:
i can fix and restore antminer s9, L3 to full hashrate. i am happy to help for low cost. I am in the United States. If you need pictures from my phone as proof, I can send with snapchat your satisfaction is guaranteed or your money back. theminerguy

### Reply 1:
I think you are going to need a whole lot more than pictures from your phone to get people to trust you to send their very $$$ miners to an unknown person for repair.I'm not sure how you would go about gaining that reputation other than perhaps putting a ""Bonded"" amount in escrow.You might ""Start"" by giving us a fairly detailed run-down of your experience and qualifications. Are you an electrical engineer? Have an degree of some sort in a related field? Work experience? References? Worked for Bitmain Warranty?Also, maybe some repairs you are able to undertake with the miner. Where you are located? Some sort of pricing estimates for example. (I know you can't price ""theoretical"" repairs, but a general idea to get people more interested.I'm just throwing some thoughts out there.Some of the more experienced members here could probably chime in on how that would work.If you are able to prove trustworthiness and are in a convenient location, I could potentially send some business in the future.

","[
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    ""hardware_name"": ""L3"",
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]"
11028,"Date: 2021-10
Topic: Should I turn off my miners every now and then?
### Original post:
Hi everyone, I'm looking for routines to optimize my devices' lifetime. I turn them off every two or three days for an hour. Is it a good idea? I'm not sure if it helps. I'd appreciate it if you let me know based on your experiences. I got a couple of Avalon 851s.

### Reply 1:
As far as I know turning on and off the devices harm the circuits more than keeping them on all the time. As long as you keep them in optimal environment conditions (like low dust and temperature) there shouldn't be any problems. Your home's electricity must be stable too. If the voltage is volatile, that would fuck your devices up also.

### Reply 2:
Thanks a lot for the reply, I thought so as well.

### Reply 3:
Keep them on. The thermal cycling from repeatedly letting them cool down and then heat up again will stress the solder joints and chip/heat sink interfaces.

","[
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15857,"Date: 2016-12
Topic: Help For a Beginner
### Original post:
I would like to buy an Antminer S7 so that I can quickly generate some profit. What is everything I need to know, everything that will help, and everything that I will need to set this up. If one of these is successful I might end up buying more than one and having those running at the same time would I be able to set this up just like the first one?If you would like more information just ask and whenever I am back online I will do my best to <truncated>

### Reply 1:
Buying an S7 does not mean you can ""quickly generate some profit"".Could you tell us a couple of things:- what's your electricity rate.- do you have a suitable place for the S7 (racks, cooling,... in a dry place where the noise won't bother you or your neighbors)- do you have suitable PSU's- do you have mining experience?- did you figure out the customs charges and shipping charges to your country?

### Reply 2:
Whatever the electricity charge might be, gaining good profit in a short time is really a difficult task. Because at the beginning to learn about mining itself takes more than expected. For this reason its better to buy bitcoin from traders and try multiplying it with different other methods.

### Reply 3:
Are S7's even still worth it? This site claims you have to go for the S9 route to get returns.<link> VS<link>

### Reply 4:
I have solar panels that I planned on using for power, I have an empty and unused clothing closet with 3 shelves in it, off in a corner of my house, I have no past mining experience, if there is somewhere easier to start I will gladly try that if this is too hard for me. I live in the US and i am not sure where this item would ship from, and is a PSU a power supply? And if that is what it is can I purchase that? If it is something else please let me know.If an S9 is a better deal than I might go with that, I just saw the S7 on an article and it said that it was decent.What other methods are there that I can try to useI am here to learn whatever I can, if there is an article or two that you think I should read just send a link or name it and I'll look it up and read it so that I can have some knowledge about this.

### Reply 5:
You should check out some calculators too see the profitability of your setup.Just google bitcoin mining profitability calculator.

### Reply 6:
Be carefull there... It looks like you have half a plan, don't do this without having a full plan and after examining everything that could potentially go wrong.I've never understood people that are really into solar mining. I have solar panels at home to, but after a deduct the initial price, and the extra taxation my governement issues on solar panel owners, the power is cheaper, but certainly not free... Maybe that differs from country to country, but you will have to agree solar panels are rather expensive, and you'll need to use power from the grid to mine at night, or you'll need to invest in battries.You can use <link> to calculate if you can make a profit with your power and any ASIC you buy, but keep in mind it calculates the current profit. When prices drop, diff increases or blocks halve, your profit goes down.To answer the rest of your questions: - a PSU is a power supply, plenty of topics on this forum that discuss this - shipping costs and import duty depends on where you live and where the sender lives. bitmain is chinese, both transport and import will be expensive. But maybe you can buy one second hand, or from a local reseller?- an S9 has a much better power/hash <rest of post truncated>

### Reply 7:
Since you got already an answer from someone its better to lock this thread.Back to topic,that member already said the possible things regarding on mining and if i were you i will invest to put my money to buy s9 miners rather than on s7 since the hashes do really differs and also mining difficulty is already high now and i dont think that s7 could be profitable unless if you have free electricity.

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23532,"Date: 2021-04
Topic: xinshili q3 problem
### Original post:
These Chinese units like Aixin or love core a1 and Q3 miner are not well-known miners and mostly they don't have support. That's the problem for a cheap miner like this one.Anyway, according to your logs, it shows abnormal fan speed since you already tried to replace the fan and the result is the same maybe it's a software issue. It seems that I found Xinshili website and this is what I found from their page from here <link> here's the firmware link <link> Extraction code: fi83Try to flash your miner with that firmware and test it again.

### Reply 1:
This gear looks like a replica of Innosilicon T2Thm Miner, so I suggest you troubleshoot it as so since you won't really find any resources on a weird brand name like this one, I'd start by flashing the latest firmware from INNO > <link>

### Reply 2:
Hi everyone. 2 months ago I ve got 3 xinshili q3 miners. All of them worked fine for 3 weeks. One month ago, I moved 2 of them to another farm. after that, one of them rebooted couple times, and stopped mining. Due to the logs, Ive decided to replace fans, but it gave no result. Ive tried to update firmware, with no result, and tried to replace control board, and got same error. I would say, that miner just died, but here is the weird thing. Error always come up after 87 pll, if I would switch off one hashboard, it will appears in the middle of setting, and if I would switch off 2 hashboard error appears in the end. With only one hashboard, miner launches and mines 10-15 minutes, and then cgminer reboots, due to temperature error. Ive already tried to launch aixin a1 firmware on it, but Ive got power detect type = 0 error. Im almost ready to buy new psu, but im not sure which I can buy. May be, any of you had same issues and know how to fix it. I would really appreciate it.first log with all hashboards. second log with one hashboard.Code:Mar 12 00:48:41 rockchip cgminer[289]: Pool 1 difficulty changed to 65536Mar 12 00:48:41 rockchip cgminer[289]: Network diff set to 21.4TMar 12 00<rest of post truncated>

### Reply 3:
have you ever found a source for a replacement PSU? I'm having a similar problem and need PSUs...thanks!

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23796,"Date: 2021-12
Topic: Innosilicon T2T-25T's not hashing
### Original post:
I have a few T2T-25T's that aren't hashing, and I can't seem to get into the kernel logs to view error codes. I've voltage tested the PSU's and they're all fine. I'm going to try Inno Monitor to view error codes but first have a few questions:1. Inno-Monitor is in Chinese - how can I change it to display in English?2. ""IP/logs"" doesn't provide me with a log, its just a blank screen. is there a different ""IP/"" I should be entering to view the backside logs in the IP GUI for the T2Ti-25 machines specifically?3. I tried flashing via the GUI, both the <truncated> the <truncated> firmware files from Innosilicon's website. How do I know which of those to use, and would it make a difference if I flashed the machines via SD Card, instead of through the GUI? Also, are there different firmware files I should try? i.e., is it possible these firmwares aren't compatible?4. These were purchased used from a vendor overseas. Video of machines hashing and serial numbers were sent, prior to shipment. Are these T2T's susceptible to shipping damage? The hashboards seem pretty solid compared to lets say an S17 Pro. The main weak point on them seems to be the ribbon connector on the board, as it's a har<rest of post truncated>

### Reply 1:
That's bad you didn't read the manual to turn innomonitor tool into English. Anyway, this image below will guide youThe 1 is the ""option"" then the 2 is ""other"" click that tab then the 3rd button must be the languages just click it you will see the English option.If you can't access ip/logs try this IP/mlogs or try to access it with <link> if still nothing the only way to find errors is to use the innomonitor tool. About flashing it you must check the dashboard overview if it's a soc version or not. And take note you can't flash soc version through SD card those miners are secured compared on g9 and g19.About your 4th question did you buy it as a used miner?

### Reply 2:
I kept getting 404'ed when trying to download the Inno-Monitor install zip, and then when trying to view the manual. I was eventually able to view the manual and get it switched over to English. Thanks though.Yeah I tried all of the different /logs, /mlogs, <link> none of them worked.I was able to view the error codes in Innomonitor, and was getting an error code 35. PSU Versions and PSU Error Codes all come up blank or ""unknown"". I've also read another post on the forum (by you actually, i'm pretty sure) that if the correct firmware isn't flashed, the PSU won't function properly. So first thing I did was update the firmware on both machines. One is G19, the other is SOC. The one that i updated to the latest G19 firmware available via Inno's site, worked and started hashing all 3 boards, but the PSU fan wasn't spinning. Pretty sure the fan is bad so I pulled it out and ordered a new one. The SOC machine however still didn't work. I tried the 2019 version of SOC firmware that you linked to in that other post I found, to no avail. I verified that the boards worked by swapping them out to the other machine. I'm guessing it's maybe a bad PSU because that fan isn't spinning either (will<rest of post truncated>

### Reply 3:
That is the problem with the SOC version these machines are secured you can't able to downgrade them the only solution is to contact one of Innosilicon's support.They will help you if you bought the miner from them I heard that they need DNA from your miner for analysis before they will send you a working firmware.Read this thread below until the 2nd page.- <link> his problem is a fixed pool but worth trying and maybe the firmware they will give you will fix your issue.Just want to add this can you try to hard reset the g19 miner to set it back to default settings and let see if it could fix the fan.Press and hold the IP set button for 4 to 15 seconds then release do this same on the SOC version and let see if it can fix your issue.

### Reply 4:
Understood, regarding the SOC machine. I'll reach out to Innosilicon. Frustrating... I'm now curious if it would've worked had I not tried to upgrade the firmware on it, and if I basically soft-bricked it when I upgraded.That other thread is interesting - I'm not on-site so I can't look right now, but I think the SOC machine reverts back to a fixed pool, much like that guy mentioned. I say that because I remember having one machine where I constantly had to update the pool back to my settings, and sometimes it wouldn't save them. I'll check it tonight when I'm there.Yes I'll definitely try hard resetting both miners to see if it fixes the fan issue. This would keep the same firmware on the machine though, correct? So in theory it might potentially fix the G19 issue, but more than likely won't solve the SOC issue as that seems like more of a firmware problem.EDIT: Hard Reset both machines, didn't fix fan issue for either of them. The G19 I was able to upgrade firmware to Inno's latest 2020 version<rest of thread truncated>
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14109,"Date: 2011-06
Topic: Mining with multiple machines
### Original post:
I have access to several machines - with various GFX cards , and was wanting to start my own pool, or at least have a easy way for me to organise my efforts into one point of contact. IYSWIM.what is the best way of consolidating my machines to one central hub then out to a mining pool [2nd step]

### Reply 1:
Just signup for deepbit, slush's or whatever pool you want, add as many workers you have as pc's, then mine with the pc's using the workers user/pass. Can't get more simpler.

### Reply 2:
That does work , however need a lot more micro managing than I wanted if I want to swap pool I have to do a lot of editing [well not a lot but ...meh]can I run my own pool locally and connect that or is that not really sensible?

### Reply 3:
In order from easiest to hardest:1) Join an existing pool.2) Run a single bitcoind and have each miner connect to it.3) Run the flexible mining proxy and join many pools.4) Run your own pool.Option 3 is ideal for most people. The best balance between resilience and effort.

### Reply 4:
Where can I find more info on #2?

### Reply 5:
Search, and ye shall find.<link> then use that info as the parameters to your miners, either as discrete arguments, or by packing them into a URL. Details will vary by miner.

### Reply 6:
You could use the flexible mining proxy from the forum. Provided you have access to a webserver with mysql and php capabilities. You can point all your miners from various locations to the proxy and anytime you want to change the pool you just enter a new pool in your proxy website

### Reply 7:
If you can possibly get the flex proxy set up, do it. It'll change your life. Even more so if we have another bad weekend like the last one.

### Reply 8:
I'm looking at the flex proxy now as I thin that would be perfect for my needs

### Reply 9:
and where can I find Infos regarding to Option 4?

### Reply 10:
I really don't recommend that, too much work for this.

### Reply 11:
maybe, maybe not. In Fact i want to setup a pool for several people. Perhaps I decide this to be to much work, but i will try at least. It would surely be also a nice opportunity to learn s.th. about the network.

### Reply 12:
you may also want to list the gpus that you have access to also, then we could tell you if it's even worth it, if they're Nvidea gpus it may not be worth it, even top of the line Nvidea cards get stomped by mid level ATI cards...

### Reply 13:
First off, be positive in this forum.Secondly, learn to spell.Thirdly, don't go acting like you know everything.

### Reply 14:
St the moment there aren't so much GPUs which would be used. (ah 5870, a 4870 and a GTX 570), But i know several people who would like to anticipate. So i thought of my own pool. If i see the effort is too big. I drop it. But at least I want to try.

### Reply 15:
The basic software is called pushpool. Setting it up currently is a chore.

### Reply 16:
You might want to use <link> it's a flexible mining pool proxy that switches to another pool should the first one become unavailable. You can also put it in front of your own bitcoin client

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    ""hardware_name"": ""Nvidea gpus"",
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    ""hardware_name"": ""ATI cards"",
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13510,"Date: 2016-05
Topic: does miner software need to check whether a transaction or a block is valid?
### Original post:
I am now reading the source code of cgminer, trying to figure out how it checks blocks and transactions, but still can't find the right place.So is the software responsible for the checking?

### Reply 1:
No. That's all done at the pool level for pooled mining and at bitcoind level for solo mining.

### Reply 2:
So the miner is only responsible for finding a hash to meet the target? And, maybe this is a quite silly question, is the bitcoind sourced in the bitcoin-master project? I always assume that it is only a wallet program.

",[]
21799,"Date: 2017-11
Topic: Where can I buy ASIC antminer s9?
### Original post:
HelloI'm very new to Bitcoin and I just decided to mine Bitcoins with ASIC antminer s9.But before doing that, I need to buy antminer s9.After a big investigation, I see there's everywhere scammers. But which site is legit to buy antminer s9?Thanks for help

### Reply 1:
Bitmain, right this second<link>

### Reply 2:
Yeah seems very legit, but how can you explain this? <link>

### Reply 3:
I'm sorry, I don't follow. Which part needs explaining?This must be a little old as Bitmain only accepts Bitcoin Cash right now.

### Reply 4:
The only trusted place to buy S9 is from Bitmain.com unless you know whom you are dealing with a reputable data center or company. also make sure that they will take care of the warranty and support tickets with bitmain.

### Reply 5:
me too!

### Reply 6:
thanks for explaining guys!I'm gonna buy an ASIC antminer s9

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16319,"Date: 2022-08
Topic: Mining Farm Europe
### Original post:
Hello everybody,lately I've been fantasizing about building a mining farm in Europe. I have already spotted the place (electricity is very cheap) - However, I wanted to do some sort of estimate on the cost of the hardware to get started.Can anyone help me make a prediction for an average price?ps Obviously I would only buy ASIC, no GPU

### Reply 1:
Welcome aboard!Europe with the actual rising price regarding energy is not the best place to set up a mining farm except if you have a very specific deal with a energy provider or Dam privately owned etc.Also you have to bare in mind some countries have pretty high fees on top of the elec price, such as Sweden where the grid fees are more expensive than the electricity price for instance.Could you let us know what area in Europe you have in mind to set up your farm

### Reply 2:
Finland! Price for kWh 0.07

### Reply 3:
It's a 2021 figure.Please compare month by month between 2021 and 2022, you'll figure that 2022 is at least twice of the monthly values from 2021 which means 2022 will be at least 14cts / KWH for FinlandDatas from here => <link> top of that price, you have to add grid fees.

### Reply 4:
So, 0.14 is always good. I'm a citizen of Europe, I can open easily a startup in Finland. I think that there's not less than 0.14 in Europe...The dream would be america

### Reply 5:
It's way too much

### Reply 6:
I suggest if you are new and planning to start a small or big farm then read this First time/Small miner reference for getting started.Then check available units from the list of distributors and manufacturers here Current List of Competitive HardwareAnd then use a mining calculator to calculate your daily profit and ROI <link> you can use <link> and scroll down to the bottom and put your electricity rate to automatically calculate the daily earnings. You can check the price by clicking any unit listed on that site and then click the logo upper right of the profitability graph.

### Reply 7:
I am inclined to believe that Larson311 is correct, 0.07c per kWh in a country like Finland does not make sense, unless they managed to somehow generate power out of thin air, also given the current situation and issues with gas/oil supplies, I think even 14c is not sustainable, so mining in EU, in general, is pretty much a bad idea now, in fact, it has always been this way, now it's just a lot worse.

### Reply 8:
If you're a citizen of Europe and you read the news you should know that Europe is getting in trouble with all the forms of energy.I would not be surprised if shortages and even higher prices will be in place in the next winter. Right now in many European countries the governments subsidize the prices for end users (but not for businesses!!) so you should really-really do very good your homework before investing big money into hardware.

### Reply 9:
Hi there, Would agree with the other replies that it is Europe is a tough nut to crack when it comes to profitable, sustainable mining - which is why we opted for Georgia for our mining farm - mim.farmAll the best with your endeavorsMunich International Mining mim.farm

### Reply 10:
Where you from? You said that you had a place in Finland where you could start your mining opeartion, but are you from Finland too or are you from some other country? I have also been fantasizing about starting a mining operation but I have a few other ideas about how to get cheaper energy, namely solar panel farms and other sources. But I have also another thing in mind but I'm stil not sure if singular citizens are eligible for what I have in mind or if I alreaddy have to own a business!

### Reply 11:
Please give me some advice on mining, thanks.

### Reply 12:
Can you share any info on your farm? Like, size, quantity of machines, if you have a land your you rent it, if you produce your own energy or you buy it from providers, and that kind of info!

### Reply 13:
I'd love to hear further details of your farm! please share if you can.

### Reply 14:
DM me, I could be interesting

### Reply 15:
Hello guysI haven't a lot of free time actually, but during the next week I will post a detailed description of the farm and will upload some photos !Don't expect too much, we do not have a crazy farm haha See you next week, Have a nice Sunday

### Reply 16:
Hi mateHow long have you been mining in Bulgaria? And how has it been going? I'm looking to set up a farm and was considering Montenegro or Georgia. Fritz

### Reply 17:
You have to consider that in many nordic countries there are very few people and a lot of natural resources, especially hydro power. That means that also in extremely expensive countries like Norway there is very very cheap electricity.

### Reply 18:
where in finland ? send me details cuz I am in finland . It would be nice to get to know the electricity industry here

### Reply 19:
If that would be a rule for it Norway wouldn't have the most expensive gasol<rest of thread truncated>
",[]
23946,"Date: 2022-05
Topic: Best electric set up advice on a UK home supply?
### Original post:
Hello all. First time poster but long time lurker/reader .Ive heard and looked up 3-phase but its not a possibility. Whats the next best option for a home mining set up? Currently on a standard set up but have an electrician coming to have a look and quote. What should I be looking for and requesting? Any thoughts on max amp, armoured cable thickness, plugs etc etc Set up in a small garage at the bottom of my garden. Ive been mining with S9s and an innosilicon on standard 240v / 13A and I am looking to expand into 1-2 S19s and see how it goes from there. If I get the opportunity I want to run as much as possible safely.Any advice would be great !

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21316,"Date: 2017-03
Topic: Minerlink or something along them lines
### Original post:
Hi all, I'm new to mining although been involved with bit coin for the past two years.I'm currently running a mining setup up away from my house. is there anyway i can view the miners from a different internet.i see there is a miner link, but i don't know anything about it. plus the website is in Chinese lol.thanks

### Reply 1:
You are almost in the right area, you want Mining > Mining Software. Anywho, I highly recommend Awesome miner <link> and Awesomeminer.com

### Reply 2:
Thanks. I use Mac so won't work.

### Reply 3:
Macs now use x86 architecture and can emulate windows programs just fine if you still want to use the AwesomeMiner client.

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16854,"Date: 2011-07
Topic: phoenix 1.5 -  FATAL kernel error: Failed to load OpenCL kernel! - with a twist
### Original post:
I was looking through some of my start up scripts, and I noticed some of my miners, which have thus far been working correctly, have incorrect <truncated> -u <link> phatk DEVICE=0 AGGRESSION=9 VECTORS BFI_INT WORKSIZE=128Notice how I am missing the -k before phatk. I decided to fix it, and added the -k. so.../phoenix.py -u <link> -k phatk DEVICE=0 AGGRESSION=9 VECTORS BFI_INT <truncated> when I do, I end up with the generic error:FATAL kernel error: Failed to load OpenCL kernel!I have checked my app sdk variables, and the ld.so.conf.d entry, it is all correct. I have re-extracted the icd registration, and have verified the phatk kernel is there (since I am using 1.5 it is there by default)Any ideas of what I missed? For the time being, I simply took out the -k, and I am running fine

### Reply 1:
try dding the phoenix path the your LD_LIBRARY_PATH just before your calls to launch <truncated> <truncated> is the method that I use in smartcoin when launching phoenix instances - this is due to phoenix using a relative path to the kernels directory and bash having its own idea of what the current working directory is.You should give smartcoin a try

","[
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17039,"Date: 2012-02
Topic: 3 BTC bounty - why is my share count staying at zero?
### Original post:
Hi all,I have a workstation with a single 5850, that hashes around 350 MH/s. Has worked wonderfully for months, without the slightest hitch. However, starting over the weekend the miner shows as offline at my pool, and no shares are being submitted. GUIminer still shows the card hashing away, and CCC shows the GPU at 99% usage. Unfortunately, GUIminer also shows 0 shares submitted. Any ideas?I am running 11.9 with win 7 pro 64bit. If someone can help me find a solution, I will give them 3 BTC.

### Reply 1:
Are you using python OpenCL (poclbm) in guiminer? If so, this problem has been happening for everyone in the last few days. See <link> it shows that you are mining but the shares are not being submitted.Anyway, the fix is coming up in Windows so just switch to Phoenix in guiminer or get cgminer for the time being. If you need direction for switching to phoenix, which is what I'm doing now, just ask. Not really worth the 3 BTC to be honest but if you still want to send, I won't complain.EDIT: BTW, I've also heard that using the older guiminer version works but have not tried this.

### Reply 2:
Let me give it a shot over the next day or so.....I don't have access to the machine at the moment. If it works, I will send you the bounty. I am a man of my word!

### Reply 3:
I switched to Diablominer and the problem is gone. I know the other guy got the bounty but still let me know if you need help.

### Reply 4:
You lucky dog...$$$$$ 3btc, it took me 48 hour to earn that

### Reply 5:
Hey homeboy....all is copacetic now that I dropped back to the old GUIminer. Want your bounty sent to the address in your signature line?

### Reply 6:
sent!

### Reply 7:
Yes, that'll be great. Hope all is fixed with your problem.EDIT: Received, Thanks

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14108,"Date: 2011-06
Topic: OpenCL won't detect 6990
### Original post:
I've been following mostly Inaba's guide at <link> but using the 2.4 SDK. I am also using the 11.5 version of the ATI driver. However, I am unable to get either clinfo or poclbm to detect the card. lspci, fglrxinfo, aticonfig --lsa all seem to see the card correctly. I've done plenty of searching and looked through all the guides I can find, but so far no solution that has worked. Any suggestions to get this running would be greatly appreciated.lspci -v :03:00.0 VGA compatible controller: ATI Technologies Inc Device 671d (prog-if 00 [VGA controller]) Subsystem: ATI Technologies Inc Device 0b2a Flags: bus master, fast devsel, latency 0, IRQ 50 Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at e5000000 (64-bit, non-prefetchable) [size=128K] I/O ports at 9000 [size=256] [virtual] Expansion ROM at e4000000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Kernel driver in use: fglrx_pci Kernel modules: fglrx04:00.0 Display cont<rest of post truncated>

### Reply 1:
Any ideas?

### Reply 2:
Why would you tell someone running linux to install a bunch of microsoft windows packages? Maybe you should slow down on the posting a bit...

### Reply 3:
you absolutely right.sry 4 that..p.s.too much messing with <truncated> MSWIN networks/boxes, probably.""all work and no play makes jack dull doll"" (c)

### Reply 4:
""aticonfig --initial -f"" does any impact ?weird kernel module[name].

### Reply 5:
Forgot to come back and update this thread, but I have got everything working. After a couple more attempts are reinstalling the drivers/sdk, I was able to get clinfo to detect the cards properly, but only as root. At this point I'm not going to worry about where the permissions are off that I can't do so as a normal user.

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13673,"Date: 2021-02
Topic: can I flash S9 Hiveon to Braiinos?
### Original post:
I bought S9 that has Hiveon software on it, since I mine on slushpool, i changed the jumpers, flashed a 16 GB SD card with the SD firmware, however the router doesnt pick up the S9.tried resetting it, different cable, still not recognized.thanks for help.

### Reply 1:
What exact SD card firmware did you flash?Did you flash it directly with Braiins OS SD image?Try other SD cards sometimes fake SD card can cause corrupted data so the image you flash on the SD card might be corrupted. Format the SD card first and flash it again and test if it will work if not replace the SD card.

### Reply 2:
Let's hope you did not brick the control board, where did you download files which you used on the SDcard to perform the flash? did the 2 LEDs flash a couple of times when you did the flash? also do remember to change the jumpers to their original location or else the miner won't work unless you have a Bootable firmware on the SDcard which I doubt.

### Reply 3:
braiins bootsop have you ever made a braiins sd card?you need to extract the image then flash to the card.

### Reply 4:
If this is Braiins OS one very common mistake newbies make is assuming that booting the sd card ""flashes"" the firmware. No, it doesn't, if you remove the card without logging to the miner and using the flash to NAND option, its never flashes. The point is you can use it from sd without ever flashing it to the miner for testing purposes or if the NAND is damaged. Works the same except no self-updates.The other common mistake is, believe it or not, not clearing the browser cache or trying a different browser. The likes of Chrome are annoyingly persistent with their now stale cache data from the earlier firmware.Also, very often the ip address changes, and you have to find it again, either from your router or using a tool such as Angry IP or nmap. No, Bitmain scanning tool doesn't work.Bitmain recommends using less than 16gb micro sd cards. This roughly tell us they are not using sdxc capable chips and can read sdhc at best. But in my experience, it is best to stick to plain old sd, which means under 2gb. Often 4gb, 8gb or such work, but its best to go as small as you can, and sometimes just changing the brand of sd makes the difference. You can thank Bitmain (or Xilinx?) for that, th<rest of post truncated>

### Reply 5:
Just bewarned flashing to get off braiins requires like 2 hours to read all the support information to realize they disabled SD flashing off to other firmware.

### Reply 6:
This is obviously false. Certain someone doesn't like people using proper firmware which doesn't infringe the gpl, or corrupt hashboard eeproms because they can't be bothered to write their own code.If you can't read a couple of lines or ask a simple question in the group you spend all day lurking, go use the sd image from Bitmain. Too bad, you'll need to read there how to use it.

### Reply 7:
To clarify, you do not need to use the bos-toolbox to uninstall it. There is no locking whatsoever (or signature checks to lock you in). Obviously, Braiins OS is not modded firmware so you just can't directly use the file to flash from the miner's web ui like you would to upgrade factory firmware because its incompatible. You CAN use the sd card recovery method from Bitmain OR the bos-toolbox to go back to factory firmware just fine, then flash/upgrade that from the miner ui to whatever using Bitmain's upgrade files from their support section.Also mikeywith messing with the firmware of your miner is not something ""the average joe"" should be doing in the first place. Its not difficult but not something a computer illiterate should be messing with, kinda like rooting your phone, you could just brick it. Consider that to install it you would have also used the same command line tool or sd card in the first place, so at this point you are already beyond this.Only few S9s with firmware from 2018 or earlier (unlocked ssh) can be directly upgraded ""easily"" from the miner web ui, and those are becoming rare. Just don't expect that exact same path to go back. The dev fee is clearly shown in<rest of post truncated>

### Reply 8:
Two hours is indeed an extreme exaggeration on teaser's side, I'd say 3-5 mins if you are a bit tech-savvy, and maybe 10-20 mins if you are a complete noob, but given that you pay 0 fees to use the original version of BraiinOS, I don't think it's something to be complaining about, however, even if with the + version (which has fees) uninstalling braiins takes the same amount of steps, I know it's just a bunch of cmd lines and a few text replacements, but one would expect to be able to migrate using no tool but the web-broswer, drag and drop their desired firmware and off they go.I wonder if they are planning on making the uninstallation of the firmware a lot simpler to the average Joe? don't get me wrong, I do think Braiins is a great firmware regardless of what the others might <rest of thread truncated>
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10107,"Date: 2017-01
Topic: Where to buy new AntMiner S9 ?
### Original post:
Hello, I want to buy new AntMiner S9 where can I buy it from ??

### Reply 1:
Hi, Im willing to sell a NIB Antminer S9 16 nm Asic miner, provided you are in the US, and will pay for shipping. I am in the process of upgrading my operation, and have 2 Brand new S9s. Txt me if u want. Ill give u a good deal as Ive been killing it w the coins lately. 218-212-8305

### Reply 2:
be extremely cautious, use an escrow op!

### Reply 3:
Seems you registered just post this Name: ThxSat0shiPosts: 1Activity: 1Position: NewbieDate Registered: Today at 01:55:28 AMLooks like an obvious alt account and a scam attempt.

### Reply 4:
Don't worry Escrow solve problem every where

### Reply 5:
<link> the stock is zero

### Reply 6:
i got two R4s for sale on ebay

### Reply 7:
Try Newegg i think i saw them selling some antminer hardware

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21072,"Date: 2016-06
Topic: Why do i need to download cgminer with slushpool?
### Original post:
Is cgminer to slushpool the same as advanced ip scanner for antpool?? Do i have to have a back up pool or is one ok? What do you recommend?

### Reply 1:
Also why is my hashrate blank? My antminer is running.. <link>

### Reply 2:
Actually let me rephrase my answer, with a question. What hardware are you using?

### Reply 3:
im using the S7 with a lepa 1600w

### Reply 4:
You just need to point your miner to a pool. You don't have to have a backup pool, but I'd definitely recommend it, in the event your main pool goes down. Use kano.is as your pool. It pays better. Instructions are on their homepage.

### Reply 5:
Cgminer is already on your miner and works on either pool.

### Reply 6:
what do you mean by its already on my miner?, where do I download cgminer? also what is the best payout for me pps or pplns if i leave my miner on 24/7? thanks

### Reply 7:
Cgminer comes pre-installed on your s7. Kano.is is the best. Watch a YouTube on setting up your s7 they make it pretty simple.

### Reply 8:
so slushpool will automatically find it?

### Reply 9:
No it won't. All your questions have been asked and answered here. <link>

### Reply 10:
thanks, last question: do I need to leave my laptop on while my miners are running? I just started today. thank you so much

### Reply 11:
No you don't. You only need your laptop to change settings, etc. Other than that the s7 will completely run itself.

### Reply 12:
got it. thank you!

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13945,"Date: 2011-05
Topic: GPU Mining Crashing
### Original post:
Hey guys,Just started mining today, and I'm using poclbm for my GPUs. I've got a HD 6990. I'm pretty sure this counts as two gpus, so I have two lines in my batch file. However, if I run the batch, and open up any other program, my computer will freeze and I have to manually reboot. If it runs by itself, it works fine. Is there anyway to solve this? I've also tried attaching the -f 60 at the end of both lines, but it doesn't help. I saw some other people talking adding other things in their batch files, but I'm not really sure what they were doing. Any help is appreciated. Thanks.

### Reply 1:
Would be helpful if you could post lots more info about your setup your actual batch script etc. That could be lots of things

### Reply 2:
Also, what's your cooling situation like? A 6990 can produce as much heat or more as all the other components of your computer combined. You had better have some 120mm or many intake/exhaust fans.

### Reply 3:
Maybe an idea for a forum mod to setup a technical section to this forum and sticky a guide on how to post to ask for help with hardware errors etc ?

### Reply 4:
Right now, I'm usingstart /DC:\bitcoin\poclbm poclbm.exe --user=username --pass=pw --device=0 -v -w 256start /DC:\bitcoin\poclbm poclbm.exe --user=username --pass=pw --device=1 -v -w 256with my username and pw the same as the .conf file. And my cooling is fine, i've got at least 15 fans, (I game a whole lot.) It's just weird that the batch file runs fine and mines fine when I don't have stuff open. Is there maybe a way to throttle the gpu? And how do you know the gpu is mining for your address?

### Reply 5:
I just got a 5970 (dual gpu) having the same problem too poclbm.exe --platform 1 -d0 --host=deepbit.net --port=8332 --user=xx@gmail.com --pass=xx -v -w 128and -d1 tooI'm having a problem with it locking up my pc after a few minutes

### Reply 6:
Both the 6990 and 5970 guys seem to have failing or insufficient power supply problems.

### Reply 7:
IlbiStarz, TheShoura,I have two possible reasons that come to mind.The first is that you have buggy/old ATI Catalyst drivers. Updating those from the AMD website (in the box at the right, select Desktop Graphics, Radeon HD Series, your graphics card, and operating system version) and try installing a newer version of the drivers.The second is that your PC simply doesn't have enough power to sustain mining. It could be that your computer's power supply unit just can't handle the power draw. If this is the case, you might consider underclocking your GPU's memory clock (I am by no means an expert on this) to 300 MHz or so, which might reduce the power drain enough to leave your PC stable.Hope this helps, good luck mining!

### Reply 8:
just got the card, just installed catalyst 11.4i have a 1000 W corsair HX 1000 been using it for a while. rock solid

### Reply 9:
Same, 11.4 has been working for me, and I have a 850w 80+ Gold PSU. I game and benchmark, so I see no reason why the PSU or drivers would be the problem.Any way to throttle the rate at which the gpu mines? Also should I do pooled mining or solo mining?

### Reply 10:
well i never tested the gpu really.... i just bought it and started mining on it... i have another gpu in my system (gtx 460) that i'm using for gaming only lol

### Reply 11:
Found the problemI open GPUz while i had catalyst open on overdrive page and it crashes consistently

### Reply 12:
Try Phoenix with one or both instances not using BFI_INT. I've noticed since BFI_INT, I can't run two miners at once on my 6870 960/300 or 6850 800/300.

### Reply 13:
no point for me, that's slowerfastest was poclbm with some nice flags and I'm goldenthe crash was most likely GPUz as I tried it again for a 5th time and right after opening GPUz I crashedbeen running for half hour now while gaming no crashes at all.

### Reply 14:
I still crash when I open firefox though...

### Reply 15:
The 69xx series, maybe the whole 6000 series, has a problem with mining where anything trying to GPU accelerate something while mining will crash it. I had to disable hw acceleration in flash and in MPC to be able to mine, and just turn off my miners for some of my games (not all cause crashing, experiment).

### Reply 16:
I disabled hardware acceleration in Flash and MPC and set the core clock to stock when watching videos on the latter to avoid crashes.

### Reply 17:
Firefox can use hardware acceleration on it's own too, disable it from Firefox options.

### Reply 18:
How do you disable the flash and MPC thing?

### Reply 19:
I recently started getting crashes too but only when I try to stop a <truncated> q66008gb ramWin7x642 x 5770650w psuI'm using a GUI version. I'll have both miners running and everything's smooth enough then i'll watch video online and notice its not 100% smooth so I'll stop the miner running on that card and the system completely locks up. This only started happening after I updated my drivers <rest of thread truncated>
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    ""hardware_name"": ""6850"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""q6600"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5770"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""650w psu"",
    ""hardware_is_owned"": true
  }
]"
16532,"Date: 2023-06
Topic: NuMiner (new manufacturer) - are they legit?
### Original post:
Yesterday a new ASIC miner launched a machine, NM440, that is supposed to do 440 EH/s with a lower cost than currently available miners.Does anyone know if these guys are legit? Seems crazy that the machine is 3-4x more powerful than anything from Bitmain.<link>

### Reply 1:
Absolute rubbish, doing 444THs - no problem, just use more chips and bigger PSU's.Using 75% less power per TH -- bullshit.Ya may want to checkout the folks they (say) they are selling to conned into buying the 1st ones <link> and I have no doubt that Sphere is the main group behind this. Looking at Sphere's Investor Relations page just leads to more and more red flags about the whole thing.To save a lot of needless rehashing of Speculation, here is the main part of a discussion about them we had in the KanoPool Discord room last night, the real meat starts at 9:22 mark:

### Reply 2:
Wanted to publish the same article today as I came across the news regarding this miner. I was so stunned after reading that single machine can produce over 400 TH of power. The machine photo if you checkout is straight out of the sci-fi movie and you can check the same on the article that is linked in reference. Though the discussion is still on regarding the legitimacy of the miner there is news from coindesk where they stated a deal was cracked by Gryphon mining company with this Numiner firm and they have invested over billion dollars to preorder the Numiner which is miraculously speeding 400 TH mining. Full read here: A Mining Rig That Boasts 440 TH/s? Miners Question the Legitimacy of New Bitcoin Mining Device

### Reply 3:
Lolz. Fairly enough. End of discussion here. I think stompix needs to get on to the panel of juri and tell them how he identified the fake miner. Wondering how they deceived everyone into this story. I mean I am myself feeling really naive about this after reading your simple two liner answer to the matter. However, it has got to do something with the Graphic processing anyways. Look at the official website of Crebras and you will find its application in the image processing of proteins and viruses clusters. The site says Cerebras is:This could be to put on the impression that its advance machine where cluster of GPU is replaced with AI stuff as per official site. Dont know. Its still unclear for me. Referred here: CEREBRAS

### Reply 4:
SCAM, SCAM, SCAM.It's a cheap photoshop vaporware copy.Not worth to put more of your time on this,it's time to move on ----->

### Reply 5:
What makes matter worse is even the so-called main financial media companies that so many ordinary people look up to like bloomberg.com published such scam on their websiteLink - <link> are the same sites that are so quick on spreading FUD about Bitcoin, especially whenever there is a price drop.

### Reply 6:
Paid press releases, this stupid thing with PRNewswire, globalwire and all the other useless services like these seriously needs to stop, and all these so-called media outlets need to at least put a damn disclaimer on top of the article, yahoo used to have one now they've dropped and it seems as nobody else cares about it anymore, they just dump it on the websites with no checks.But what can you aspect from the people who actually published that fake press release from Walmart about accepting litecoin?And that was #%^#$ Walmart, not some no-name company.But, the image of the miraculous miner is gone, probably they are photoshopping something else, also you can't really directly order from the website, you have to send an inquiry, probably selective scamming as not to piss the wrong guys?

### Reply 7:
heh, on Feb 10 they even went as far as to publicly announce the image was faked. ROFL -- Just A similarity?This 'multi-million dollar' company couldn't even hire a technical illustrator to draw their vision of what their unicorn miner *may* look like but instead had one of their kids photoshop a real piece of hardware (the Cerebras) that has nothing to do with mining? Gotta love this from their FAQ: In not so many words: It's majik and therefore a secret...

### Reply 8:
It's funny how far the Numiner scammers are willing to go just to try and cover up their scammy asses. What a very stupid sort of reasoning from their Press release. Luck enough, they won't be able to delete this thread and the archived version of their fake miner listed on their website - <link>

### Reply 9:
no <truncated> SCAM, SCAM SCAM, SCAM, SCAM SCAM, SCAM, SCAMSCAM, SCAM, SCAMSCAM, SCAM, SCAMSCAM, SCAM, SCAMSCAM, SCAM, SCAMSCAM, SCAM, SCAM

### Reply 10:
Right-click on the image , search with google lens, look at results:Nu miner:Cerebras CS-1, actual product and not a miner!Enough?

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23309,"Date: 2020-08
Topic: t17+ 55 th/s problem
### Original post:
Dear bitcointalk membersI have a problem with my new antminer t17+ 55 th/s :My T17+ worked without any problems until one day the power of the farm was cut off and reconnected and after that the device works with only two hashboards with the log on below when i turn on my antminer every time. But when I reset factory my miner with pressing the reset button on the miner, the miner works correctly with 3 hashboards but after 4-5 hours without any problem, again miner works with 2 hashboard. what do you thinks of problem? I updated framework to newest version but the problem is exist yet... please check the code on below and advice about this problem...This log :Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pag<rest of post truncated>

### Reply 1:
Very likely a heat issue.How hot is the room?How hot is the town it is mining in?I have 4 units that shut down when the outside temp gets above 95f or 35cMy farm is using around 85kwatts at this time.

### Reply 2:
One of your hashboard might be failing due to high temp. Do you have any screenshot of your miner's staus on the WebGUI? It might be because of the high temperature that's why one of your hashboard stops while the two are running.Look at this logs below it shows zero asicCode:2020-07-24 07:39:14 <truncated> Chain[0]: find 44 asic, times 02020-07-24 07:39:23 <truncated> Chain[1]: find 44 asic, times 02020-07-24 07:39:31 <truncated> Chain[2]: find 0 asic, times 02020-07-24 07:39:40 <truncated> Chain[2]: find 0 asic, times 12020-07-24 07:39:51 <truncated> Chain[2]: find 0 asic, times 2And then it keeps <truncated> 07:40:14 <truncated> target_vol = 20.00, actural_vol = 20.13, check voltage passed.2020-07-24 07:40:23 <truncated> Chain[2]: find 0 asic, times 32020-07-24 07:40:34 <truncated> Chain[2]: find 0 asic, times 4chain 2, <truncated> reg = 0x f1fffff2020-07-24 07:40:43 <truncated> Chain[2]: find 0 asic, times 5chain 2, <truncated> reg = 0x f1fffff2020-07-24 07:40:51 <truncated> Chain[2]: find 0 asic, times 62020-07-24 07:40:51 <truncated> Chain 2 only find 0 asic, will power off hash board 26 times until the hashboard chain[2] shut off.Can you try to use extra power supply if you <rest of post truncated>

### Reply 3:
Guys where you coming up wit the temp-issue from?? Kernel log <truncated> 07:39:14 <truncated> Chain[0]: find 44 asic, times 02020-07-24 07:39:23 <truncated> Chain[1]: find 44 asic, times 02020-07-24 07:39:31 <truncated> Chain[2]: find 0 asic, times 02020-07-24 07:39:40 <truncated> Chain[2]: find 0 asic, times 12020-07-24 07:39:51 <truncated> Chain[2]: find 0 asic, times 2The second hashboard sees 0 Asics, this is 99% caused by a loose heatsink, the conductivity between one or more of the heatsinks and the chips is bad, bitmain uses a bad thermal adhesive / solder on these gears so everyone who owns a 17 series mining gear should expect these kind of issues.

### Reply 4:
I don't think , it is for hot issue. because before this shut down of farm , the temp was very good and now this miner has this temp :Code:Chain# ASIC# Frequency GH/S(RT) HW Temp(PCB) Temp(Chip) ASIC status1 44 647 18581.75 707 37-58-34-54 59-80-56-74 oooooooo oooooooo oooooooo oooooooo oooooooo oooo2 44 636 19065.53 186 36-57-33-52 60-76-56-68 oooooooo oooooooo oooooooo oooooooo oooooooo oooo

### Reply 5:
Dear mikeywith, when miner show this temps, what i must do now for solving this problem ?Code:Chain# ASIC# Frequency GH/S(RT) HW Temp(PCB) Temp(Chip) ASIC status1 44 647 18581.75 707 37-58-34-54 59-80-56-74 oooooooo oooooooo oooooooo oooooooo oooooooo oooo2 44 636 19065.53 186 36-57-33-52 60-76-56-68 oooooooo oooooooo oooooooo oooooooo oooooooo oooo

### Reply 6:
-Disconect the white cable from the hashboard and reconect it.-Install Asic.to firmware (vinish), not sure why but in the past i got a board from a T17 that was not detected like yours with bitmain original firmware, asic.to firmware detect it without problems.Anyone can confirm me this: i found that the 17 serie don't use heatsink paste/glue, the heatsink are soldered, this is true or my eyes are bad.

### Reply 7:
Your temps are a bit high but they are not what causing the 0 asic issue, read this thread, there are a few ways you can follow to fix it, the simple once that require no skills and no special tools depend heavily on luck so you just have to try them out.As for the temp, you could set a static speed of 80-100% and that will fix the temp issues assuming you have prop<rest of thread truncated>
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11411,"Date: 2011-06
Topic: [Announce] WhileIdle application - 3 BOUNTIES FOR 3 PROBLEMS
### Original post:
Bounty 11 BTC for anyone who can tell me how to get rid of the WhileIdle window that appears when alt-tabbing between tasks. OS is w7x64 pro.Bounty 21 BTC for anyone who can help me get to Task Scheduler (or a system/registery hook) to launch WhileIdle on startup, without having an active directory user logged in. I've tried all the obvious 'make-new-task' crap but it won't go. Sucks because I'm supposed to be a guru, beyond such baby stuff. Maybe I should just run it as a service?Bounty 31 BTC for anyone that can help me get WhileIdle to run guiminer. I've already tried putting the whileidle files in the guiminer\miners directory, and lots of other stuff.

### Reply 1:
You can not see my program when alt+tab<link> program already do it<link> program can run guiminer easily<link> 3 BTC to <truncated>

### Reply 2:
I decided to make an update after all. (Bountys changes everything!)The link in the first post of this thread has been updated to the new version.The new version fixes Bounty 1. Regarding Bounty 2, i could release a version that works as a service, but I'll need a little time to code this. Edit: no_alones program does not run as a service, according to a poster in his thread.Bounty 3: There shouldn't be any problems launching guiminer with WhileIdle. I've tried it myself. However, i wouldn't recommend it because guiminer in turn launches miners and when WhileIdle terminates guiminer, the miners started by guiminer will not terminate. This is also true with no_alones program, regardless of what he says. If you read the thread about his program, you can see it has the same issues.This version should also fix the issue that metastable had.

### Reply 3:
To use guiminer, unzip the new version 0.12 into folder C:\BitcoinMiners and just run WhileIdle.exe .The included conf-file is set to use that directory and the now included guiminer.

","[
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9914,"Date: 2016-07
Topic: GFI Breaker A Must?
### Original post:
Hello Internet,I have bought another 30amp breaker. Should I be buying GFI breakers for saftey? 240v 30amp for each pdu. Thanks.I want to be as safe as possible. I had a blowout the other day. Fried a ballast in the other room. Would GFI have saved the ballast? God bless

### Reply 1:
GFCI breakers are a safety must for areas that are routinely damp/wet - bathrooms in particular, or anything that is used outdoors, and arguably any outlet next to a kitchen sink or utility sink.I also used a GFCI breaker on the circuit I put my ""pull air into/push air out of a window"" fans, as Iowa where I lived at the time often had very high winds that could push rain into the fans - sometimes even the fans blowing OUT would get overpowered by the wind.Otherwise they're a waste of money, and no it would NOT have saved a ballast to use a GFCI instead of a normal breaker.

### Reply 2:
i cant seem to find much about it online. You seem to know some about ballasts. If I unplug the light side of the ballast (not the power cord side) will it damage things. I ask because i was high as fk. One day i hear a BOOM. I go into the garden a few hours later. Bulb is blown and ballast is blown. Then i beging unhooking the sexond ballast an accidently unplug the light side cord first. BOOM. 2 ballasts down 1 light blown.The last light running is trying to maintain the garden until later today. I was wondering if you have ever hear of this? Blown bulb blowing a ballast? Then also the 2nd Ballast blowing out due to unplugging light side cord first? Thank you

### Reply 3:
If you are using a HPS (High Pressure Sodium) or a metal halide light then yes running a ballast for them without a load is very bad... Those light use a high voltage that can be up to 1-2kv - under load -to start the bulb. With no bulb that starting voltage will rise much higher and probably start arcing over inside the ballast or bulb socket. Once an arc starts the ballast is toast.If you are a MM grower, try using LED grow lights like the UFO series. Much more efficient and better spectrum for the plants to use.

### Reply 4:
No it would not have saved the ballast.Along with protecting against direct power overloads like a normal breaker, GFI ones additionally protects people from voltage leakage to chassis/cases in ungrounded systems or grounded ones where the wired ground may not be the lowest resistance path to earth-ground.

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  {
    ""hardware_name"": ""GFI breakers"",
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    ""hardware_name"": ""pull air into/push air out of a window fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HPS (High Pressure Sodium) light"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""metal halide light"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""LED grow lights"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""UFO series lights"",
    ""hardware_is_owned"": false
  }
]"
4193,"Date: 2012-10
Topic: [SALE] Discounted Icarus FPGA [UPGRADABLE to Avalon ASIC]
### Original post:
Trade-ins only apply to the future full price of 1999 according to NZhang's thread and not the 1299 price.

### Reply 1:
It seems that Avalon still accepts orders @ 1299$ though the pre-order date had passed. I am not sure if the price will remain @ 1299$. Despite how much avalon ASIC price will be in the future, still Icarus boards will have a trade/upgrade plan.

","[
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    ""hardware_name"": ""Icarus FPGA"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Avalon ASIC"",
    ""hardware_is_owned"": false
  }
]"
22664,"Date: 2018-07
Topic: tech question in controlling fans and temp
### Original post:
Hello,I have my sweet home mining farm in a separate unit.This unit has a box fan (silent) to get in fresh air, and a frequency controlled rooftop fan to extract the hot air from the hot side.Now, i want to build a controlling device that i can readout remotely, wich controls the fans based on temperature.I do have a sort of setup, but its too coarse, and i have no readout.The input fan is on a onephase speedcotroller that speeds up when the temp. rises, its set from 50% to full based on a tempscale.The outut fan i set the frequency inverter at 50% min. freq, and with a temp controller (contact) connected to one of the inputs, it switches to 100% freq output.Now this is too coarse. I actually would like to haveit regulated analog without steps, controlled by temperature. It generates an error sometimes as well, as the switch between 50% and 100% is too big, so i had to set the ramp up and down bigger.Now, what im looking for, is a way to read and set it with ethernet connection so i can control it from everywhere, and preferrably readout the miners or awesome miner at a set temp. to prevent the miners being fried when something doesn't work...anyone got some tips tricks or hints wh<rest of post truncated>

### Reply 1:
You can read all of the temps from the S9 by calling for stats on port 4028.For example, if you have ncat and can access the miner over your network:Code:echo {""command"":""stats""} | nc [IP] 4028 -- for Windowsecho -n 'stats' | nc [IP] 4028 -- for Linux

### Reply 2:
Thanks, but i'm really more a hardware guy then a software guy... Wouldn't know how to start... What i would need, is something like an arduino, with a program that monitors the (average) temp of (all) my miner(s). This could be translated into an analog 0-10v or 4-20ma value on the output (to frequency inverter), that is compared by the value of an analog input of a potentiometer (temp setting) in order to regulate ventilation speed.On top of this, the arduino should send a message when a certain temp. is reached (although this should be possible in awesome miner as well.)Anyone here capable of writing such?

### Reply 3:
This would take just a few lines of code. The same could be done in Python on a Raspberry Pi. I'd suggest taking a look at basic tutorials on port reading and writing , as implementing this is fairly simple.

### Reply 4:
Or you could just buy a temp controller to do what you want, such as found here <link>

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    ""hardware_name"": ""arduino"",
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    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""temp controller"",
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]"
16611,"Date: 2011-06
Topic: Solo mining with 10 systems or more?
### Original post:
Is there a way to solo mine mutlipal computers on a single network and to bitmine lets say a server?if so do i just setup bitmine.conf file and all miners login with same name and password and try to hash at same time or do i need to make multipal logins for each card. then can I mine with computers not on the network or do i have to setup VPN ?I think only way to make it worth while mininge now is to hit blocks solo mining pool mining dont pay off enough for the lack of btc value now.Any feedback would be great I have only pool mined so far.My current configuration:5 systems AMD x3 ,2 gigs ram ,320 hdd, 2 x 6970s +846 Mhash each3 systems running 5850s 330 Mhash each2 systems 5830 302.1Mhash each

### Reply 1:
You might want to re-evaluate pool vs solo before being so definitive.You can set up a single instance of the official bitcoin client and then point all of your miners at it the same way you would a pool. They can all use the same <truncated> warned - the official client, any user with a valid log in can use the getwork command to hash for you. Unfortunately, they can also use all the other commands (such as emptying your wallet), too.So be careful if all of those machines aren't on-site.Is your name a Fallout reference? Or do you actually live in Oregon...

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    ""hardware_name"": ""2 x 6970s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5850s"",
    ""hardware_is_owned"": true
  },
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    ""hardware_is_owned"": true
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17049,"Date: 2012-02
Topic: 5830 Dedicated Miner Problem
### Original post:
I have a dedicated miner that seems to be giving me some grief. I know that a 5830 should get somewhere in the high 200s low 300s for their hashrate. My problem is that the 5830 in me dedicated rig is only reaching 179 Mhash/s. In my main computer I have 2 5830 in crossfire that can reach 570 Mhash together (Maybe more). I've put the cards from my main computer into the dedicated rig and all of the cards maxed at around 170 Mhash, but when I moved the cards back into my main rig they went back to 280 Mhash. I've switched slots on my motherboard and I've even tried different power configurations from my PSU. I am currently running v11.5 Drivers with v2.5 SDK.Any help would be appreciated.MSI 890FXA-GD70AMD Sempron4GB DDR Corshair Ram(1) 5830Cougar CMX 1000w PSUOS: Windows 7 64-BitUPDATE:I ordered a new Mobo from Newegg and I installed Windows 7 64-Bit. I'm still only getting ~160Mhash/s when I should be getting somewhere close to 300+.

### Reply 1:
Miner used? Settings used? 5830s require tweaking the miner's settings for optimal performance.

### Reply 2:
I'm using GUI Miner using the Phoenix Kernel.My miner flags are: Code:-k phatk poclbm VECTORS BFI_INT AGGRESSION=12 worksize=128 FASTLOOP=false

### Reply 3:
phatk and poclbm together?Shouldn't it be only one of them?

### Reply 4:
Not sure I'll test with one then the other.Edit: Raised my Mhash to ~180Mhash. Still not the 250Mhash I see on my main rig.

### Reply 5:
A:Get the Phoenix command line versionunzip it to a directory such as: <truncated> a miner.cmd batch file in that directory with the following line in it (modify for your pool)phoenix.exe -v -u <link> -k phatk2 VECTORS AGGRESSION=13 FASTLOOP=False WORKSIZE=256 PLATFORM=0 DEVICE=0B:Install MSI Afterburner or Sapphire TRIXX for overclock control,Set the memory clock to 366MHz, and overclock the core from 800MHz to something more like 950MHz-1000MHz+C:If you have ever installed 11.12 or 12.1 Catalyst drivers, follow the instructions here to remove the old OpenCL it left behind. Reinstall 11.11.D:Run the miner.cmd file. You can right-click and drag to your desktop, and create a shortcut to itSee 320+ MH/s

### Reply 6:
C: This is a fresh install of Windows 7, I installed 11.11 Drivers with the 2.5 SDK.After following your steps this is what I have.<link> still am only getting a 180Mhash.

### Reply 7:
The system specs in your first post say one GPU, but the Trixx drop-down box indicates that there is more than one GPU in the system. If you have an onboard GPU or other card it should be disabled unless it is also mining. The motherboard doesn't have onboard video looking at the spec site. I have a feeling that PLATFORM=1 or DEVICE=1 as an option may point the miner at the correct GPU.Run this command line in the phoenix directory, and it will list the device numbers of the OpenCL devices in your <truncated> -u <link> -k phatk2A 5830 should be listed as Cypress.

### Reply 8:
Nice non-genuine windows you have there... But FWIW, mine isn't genuine either, but windows doesn't know that. Look up something called windows loader by dazAlso I saw you were using GUIMiner. Up to you, I use guiminer too with the phoenix miner and phatk2 kernel. Seems to work fine for me. My arguments supplied are rather minimal. Also using phoenix 1.7.2 (should go to 1.7.3 but lazy, havent had any connection problems either) in place of whatever phoenix is bundled with guiminer; I simply overwrote over whatever phoenix.exe and kernels were present in the guiminer folder. Here's a screenshot of my 5830 mining away along with 3 other cards. Maybe you can find your solution in the screenshot.

### Reply 9:
The only ones listed are Code:[0] Cypress[1] AMD Sempron(tm) 130 ProcessorAs I've said multiple times this is a fresh install of Windows. So fresh in fact that I haven't even activated it yet. I do have keys for it I was just using this copy to test the miner, I was not sure if it was going to work.

### Reply 10:
This is a fresh install of Win 7 64-BitAlready Cleared CMOSI will check the clocks, but I don't think that this may be a problem. (Will edit with updated information)I am not using any connectors.My PSU has 6 6-pin connectors (Two built in then 4 modular), I will try other ones, and if that does not work I will use a different PSU.

### Reply 11:
So if swapping different video cards into this system doesn't help, and you have re-installed the OS from scratch and no <truncated> the only thing I could imagine is if for some reason the card isn't getting sufficient power, perhaps it goes into ""limp mode"" with fewer shaders or such. Here's the order of where I would go next:- Something wrong with the motherboard BIOS config? With the system off, move the motherboard's CMOS jumper to the ""reset"" position, restart with defaults.- Get the GPU-Z utility and run it, see that it is showing GPU clock speeds like you expect, 1120 shaders, etc. (I can do a scr<rest of thread truncated>
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  {
    ""hardware_name"": ""MSI Afterburner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Sapphire TRIXX"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU-Z utility"",
    ""hardware_is_owned"": false
  }
]"
21285,"Date: 2017-02
Topic: have problem with S7
### Original post:
HI guysi had failure update firmware then i did a restore factory for my s7 then the page of s7 become offline tried to reset it many times can't find it's IP and red and green led are down but network leds is onwhat i can do

### Reply 1:
Is it Antminer s7? I think you can raise your issue to their support.<link>

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  },
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    ""hardware_name"": ""Antminer S7"",
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]"
11686,"Date: 2011-11
Topic: Query regarding upgrading cgminer for namecoin LP
### Original post:
Hi,I'm using this miner on linuxcoin for namecoins and bitcoins but I'm getting alot of stale shares for namecoin. Someone told me it's because of no support for namecoin long polling.They also say this has now been fixed and upgrading resolved the issue for them. I have checked the changelog for cgminer and there doesn't seem to be any mention as to a change for this.Anybody able to help? Thanks!

### Reply 1:
Did you try to read the CG Miner thread? It's there in the 2.0.8 announcement.Sam

### Reply 2:
Sorry I checked it now, didn't realise it was the flushing addition that solved that problem. Besides, I was just asking a quick question I wanted an answer to and not a request to read a badly laid out book.I am not sure if I can automatically upgrade this on linuxcoin?

### Reply 3:
LOL the standard ""I want someone else to tell me I couldn't be bothered reading ...""You needed the answer right away or the world would have ended?

### Reply 4:
Do you not find though that you really have to dig through these long threads to find your answer?

### Reply 5:
Read the change log then, or learn how to search. Too many people want to be spoon fed.

","[
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11800,"Date: 2012-02
Topic: Too many rejects
### Original post:
Hi CK, have you found the problem causing the high % of rejected shares? i set it to -I 9 and still having way to many rejects, it starts very ugly but with time appears to get better, my current run shows (A:35107 R:2059), less than with dynamic set but still.I'm running 2.2.4 i didn't notice that in 2.0.8

### Reply 1:
This is the first time you've reported it? Suggestions:Perhaps your pool is actually asking you to submit the old shares even if they're stale. Newer cgminer supports the ""submitold"" feature now. I get .3-.4% rejects with static intensities so I can't reproduce your problem here. p2pool also has a significantly higher reject rate if that's what you're on/have moved to.

","[
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23958,"Date: 2022-05
Topic: S9j 0 hashing
### Original post:
Hello everyone, i am facing a problem to one of my S9J's that not hashing. PSU Working finehere is kernel log:<link> in advance

### Reply 1:
Thank you for your help

### Reply 2:
I think the control board is broken.

### Reply 3:
Based on the logs below read temp error it means that your control board can't detect any temp signal from your hashboard.Code:Max pcb temp : 0Read temp failed, set fixed full fan speedFAN PWM: 100read_temp_func Done!CRC error counter=268One of your hash boards might have a broken temp sensor or ribbon wires that are not plugged properly. Try to re-plug all of your ribbon wires then check it again through logs or if it's hashing.If still do not work then you can bypass this issue by flashing your unit with modded firmware like asic.to firmware or Braiins OS.

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    ""hardware_name"": ""control board"",
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21132,"Date: 2016-09
Topic: Spondoolies SP10 Recovery
### Original post:
Hello Guys :PLEASE help... i looking for the sp10 recovery file, the manufacturer close the website and i have 4 sp10 pending for recover ...i will appreciate any help.Anthony

### Reply 1:
I have same problem. Im looking for sp20 recovery sd image...

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9896,"Date: 2016-07
Topic: Down-clocking S7's to 500Mhz?
### Original post:
I apologize if this is a dumb question, but I'm pretty <truncated> If I were to down-clock all of my S7's to, say, 500Mhz, would it save any measurable amount on electricity over the days/month?Or does the PSU still pull a set amount from the wall vs. pulling the amount needed to run the miner?Thanks for any replies!

### Reply 1:
yes and no.lets say you have a batch one two or three.Mine could do .249 watts a gh with a platinum psu.So if I ran it at 4000gh it used .249 x 4000 = 996 watts at the wallif I ran it at 5200gh it used .249 x 5200 = 1294.8 watts at the wallso on the yes the watts are lowerand on the no the watts per gh are the sameyour plus side for lower freq/gh are it runs cooleryou can lower fans manually to 40% which means some peace and quietand of course less watts at the wall.the down side is less gh.

### Reply 2:
Thank you. That makes sense.I'm trying to decide if it is better to only run my S9 24/7 and run the S7's after it cools down and I can run at full speed.I'm currently running my single S9 and will power up the S7's tonight. I need to lower my electrical costs. I figure only running the S7's for half a day will help my electric bill. I know it will make for an unstable 5ND on Kano, but I need to do something until the BTC price rises again.If the price on the S9 drops significantly, I will get another and just run those. At current BTC price, I will still make a tidy profit with two S9's.Thanks for your input.

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23540,"Date: 2021-04
Topic: S9i Issue  - Update Overheating
### Original post:
I am using BRAIN OS +, i thought it was the recommended one Oo?Update : The s9 is overheating. The hashrate goes up and down, same goes with the temperature, is goes to 100degree then back to 0...When i start the machine, i realised that one of the 3 hash goes up slower than the other 2.I read on bitmain that i could check each hashboard individually which one is faulty. To do so, i just unplug the alimentation from 1 hash and from control board, start the s9 and see how it goes ?Thanks for your help guys !

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    ""hardware_name"": ""alimentation"",
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9876,"Date: 2016-06
Topic: Pair of s-9s now running photos  are up.
### Original post:
Be patient just got back from solar array with setup. 2 units running. had to downclock just a bit.photos to come.

### Reply 1:
Still have heat issues I ordered 2 of these.<link> will post how these help. The thermostat looks like a good idea.

### Reply 2:
Good find. I could use something like that for one of my rigs with the thermostat rather than having the box fan run 24/7

### Reply 3:
I had to order 2 to get free shipping. I think we may need 2 of them for the four miners any way.

### Reply 4:
Is this unit suitable for attaching to a window unit?If yes, can I rig it to use solar power during day and normal power thru outlet during the night?

### Reply 5:
I need to find a way to attach some sort of blow (out) fan on the window pix below.Solar powered and thermostat will be a bonus - plenty of sunshine here.Unfortunately, I cannot rig/dismantle the windows/frame too much because it's a rented warehouse.My country standard voltage is 220/240v, so I researched box fans like the one you posted... seems all of them are designed for US 110v power. Even at Amazon, the power seems limited to 110v only. I will investigate some more on Aliexpress.com

### Reply 6:
Interesting. Your country's standard voltage is 220-ish, but some of the windows across the way have red triangles on them. I would have thought that you're in Japan. They also use red triangles to signal to firemen that those windows are breakable. My family and I just came back from our second vacation in Japan. It was my fifth trip (the rest were business). We saw enough buildings with red triangles in the windows that I googled it.Since Japan uses the 110 volt standard, like the US, you can't be there. It's a shame really because that would explain the anime fascination, unless that's just an homage to Kano's shift names.Anyway, I don't mean to pry. I just thought the red triangle thing was interesting. Hope you figure out a good cooling solution.Sorry for the OT diversion. Now back to our regularly scheduled S9 programming...

### Reply 7:
Most modern buildings in Asia have that red triangle - I live in Singapore, so no prize for guessing that Singapore is probably one of the most wired country in the world and is very strict on standards and safety. The Juvia anime thing is purely homage to Kano's keen interest in anime characters (used in the pool's worker shift page). My first block on Kano pool was on Juvia's shift.... after that rest is history.... juvia luck seems to have followed me ever since

### Reply 8:
its easy job, use plywood as base, see the pic below

### Reply 9:
Aha!!! Those big-ass fans, I need to get some from you man - I can pickup from JB.Do you have exact the dimensions?It looks quite menacing though, it can suck in a small cat...

### Reply 10:
the 16"" exhaust fan, made in china, >3000cfm, it pull lots of air out, very cheap just cost +- sgd100, i think it available at most JB hardware shop or search here <link>

### Reply 11:
thanks buddy for the link, also thanks to almighty Singapore dollar

### Reply 12:
I think you could. They come on the 23rd will post on it.

### Reply 13:
i use these to cool down my gpu rigs and i also used them in my big farm when i ran it in a rent house(100 f outside temps probably 120 in the farm itsself due to the large amount of machines i ran). <link> these are awesome fans and they are reasonably priced. I did look at the reviews on the site seems its about a toss up but ive had great experience.. I placed two of these in each bedroom snugly fit into a pc of particle board then i nailed it to the window frame to keep a good seal. I think i have some picks but the post a couple back is exactly how it looked. They ran for over a year straight and i never had any issues.> still using them today on eth rigs and i purchased them in june of 2014.<link> Regardsd57heinz

### Reply 14:
they look pretty good. thank you

### Reply 15:
I had a few of those Phil.. They worked great for a bout a month.. the grease oozed out of the motor and locked up. But i also had a tremendous amount of heat coming from the back of all those machines. I also had one at my first farm using it as an intake since it was ""waterproof"" It died aswell after about three months of continuous use. Make sure you keep an eye on them during your hottest days. We just had a 96f day with 83% humidity and my rigs kept on humming. gotta keep em clean tho! <link> im using 2 of these stacked one on top of another ported thru the wall.

### Reply 16:
I have tried a few fan's out the maxair one I had got worked fine and seemed like decent quality but I was not getting the 4000 cfm they mention highend. I have one <link> had two but one gave out. Lowes had some kinda policy you could call and get a new moter for X amount of day's from purchase but they were out so I ended up getting refund and bought one bigger as they were out of 24 inch fans at the time <li<rest of thread truncated>
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16730,"Date: 2011-06
Topic: 5xxx and 6xxx
### Original post:
Hey guys,So my main rig right now has a 6990 and 6870 right now. I'm planning to use cablesaurus' adapters to put in 3 more 5830's. My question is will the 5xxx series and the 6xxx series work together? Right now im using Windows 7.I remember a month ago I tried to put a 6990 and 5850 together, but it wouldn't work (I don't remember why though). Would say...switching to Linux help?Thanks!

### Reply 1:
Both series of cards should work for mining, you will not be able to crossfire a 5xxx and a 6xxx.

### Reply 2:
Does a 6990 count as 1 or 2?

### Reply 3:
I'll clarify, Windows supports 8 gpus.But only 4 max for gaming.The 6990 being 2 gpus on one pcb, so you would be able to run 4 6990s in Windows.

### Reply 4:
So then I could run the setup I described in the op? No problems running 5 series and 6 series together?

### Reply 5:
You'll likely have to use dummy plugs.

### Reply 6:
Definitely!You WILL be able to use both 5xxx and 6xxx together! I'm doing it right now! For the record, you otherwise would not be able to use your original two together, other than for mining! 6990 would only work with a 69xx card for anything else!

### Reply 7:
Wait, so they do work together except a 6990?Are you using linux/windows?Which drivers are you using? Does afterburner work?

### Reply 8:
You can mine with any combination of cards! The 6990 will only crossfire with a 69xx card for gaming purposes! You can absolutely use your 6990 with your 6870 or your 5850 or both! They just cannot be CF'd together!I use win7, and currently have a 6950, and 2 5770s in one rig!

### Reply 9:
Okay thank you!

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13817,"Date: 2023-03
Topic: Running Compac F & R909 in cgminer at the same time on the same computer
### Original post:
Newb here to this forum. Recently got into ""lottery mining"". I have 4 of the Compac F USB miners running using the Gekko Science hub. That all works fine. Still have some tuning to do for getting the different sticks to run at different frequencies based on what that hub puts out, but that's a different question.My issue is i also just bought an R909 Terminus miner and i'm having a pain of a time getting the Compac Fs and the R909 running at the same time on the same computer. If i run either separately, works like a charm. Turn on the other, USB failures.I've tried running the R909 out of a free port on the Gekko Science hub, tried running both through a USB 2 hub out of the same USB port, tried running through different USB ports on the same computer, all no gos.Another suggestion i had given to me by the guys at Bitcoin Merch was to run the 909 through a different terminal window. This part i've probably not done well. Basically ghosted the 909 in the one window and then started another where the 909 ran until USB errors happened on both sides and then confusion ensues as both terminal windows try to load devices randomly. Can you point me to proper cgminer terminal commands to <rest of post truncated>

### Reply 1:
All covered in the R909 thread and the Compac-F thread near that one Do remember, running one R909 is the same data bandwidth as 6 Compac-F's,

### Reply 2:
So the data bandwidth is possibly the issue? I've seen people mention running like 15 Compac Fs at the same time through a Pi. Okay, i'll go through the thread. Thanks for the link!

### Reply 3:
What i'm reading seems to imply power might be the issue. That seems weird, but worth a try plugging into different sources. It was one last thing i hadn't tried.

### Reply 4:
We can suppose that the bandwidth won't be a problem, miners consume almost nothing if you compare to what we are used to nowadays in terms of consumption.For a long time I mined with a shared connection from an Android by bridging WLAN-ETH, I connected a laptop to this WIFI and I put an ethernet cable between the laptop and an ethernet switch.This allowed me to indirectly measure the mobile data consumption of my Antminers. The overall amount of data was very very small, we are talking about a few tens of MB maximum per month for a 15Th/s Antminer.I remember having the conversation on the forum with Kano a while ago, it seems he had detailed how to calculate this precisely (I can't find the topic unfortunately)I don't remember the exact figures because I haven't been mining this way for a long time, but it's certainly very negligible in terms of bandwidth consumption.

### Reply 5:
It's not network bandwidth between pool and miner that becomes a problem - yes that is very minimal.It's the bandwidth of the work being sent over the USB coms between the chip(s) in the miner and cgminer that is the issue. On a Pi that sets a limit of 13-14 compac-F's with 1 chip before the USB port bandwidth starts to limit things. The R909 with 6 chips is working with 6x the data so...

### Reply 6:
Well i'm only running 4 Compac Fs and one 909, and it's connecting to an M1 Mac Mini, so i'm doubting that's the problem. Unless people have had issues with M1 Mac Minis before.

### Reply 7:
re: Mac mini - unknown. It all depends on the USB/CPU setup in the PC. In the case of Pi-3's and under there is only 1 USB channel to the CPU and that same channel is also used for the LAN adapter.. Pi4 at least has a dedicated LAN channel and I believe 2x USB channels.Really should ask about this in the R909 channel where Kano is active - he wrote the code being used and has covered the USB data usage in posts somewhere there... Plus, other folks are sure to chime in

### Reply 8:
Thanks, i've asked in that thread. Hopefully i've just done something stupid and this is an easy fix

### Reply 9:
for those lurking, answers to this starts in the R909 thread@ OP, to help keep the Forum tidy ya may want to lock this thread so it is not needlessly <truncated>

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10510,"Date: 2017-09
Topic: Who is currently selling miners?
### Original post:
Is any company actually selling miners?If so, who and how much?

### Reply 1:
Canaan and Bitmain. Have to catch them when they're in stock and then fight half the world's population to get your order in between site crashes.

### Reply 2:
i am interested also. they are nowhere around where i live and online is crazy expensive

### Reply 3:
Follow Bitmain and Canaan on twitter. They usually announce when their next stock will go up for sale. shop.bitmain.com and canaan.io

### Reply 4:
18 TH miner release end Sept. 2017 First batch will probably go to participants on their running ICO $1600 <truncated>

### Reply 5:
Are there any pics of real device so far?Haven't seen anything.

### Reply 6:
Don't know. There is a telegram group with more infos. <link>

### Reply 7:
Then there is also Ebang with the Ebit E9 Plus.<link>

### Reply 8:
Riiiiight.... the pic looks like two s9's in 1 box so at least that looks right however....From their site:WTF? Those are specs using tech nodes that are several years old.... As in from around 2012 to late 2013.Given that I gotta say SCAM SITE

### Reply 9:
I wonder if they just threw out some ""convincing"" jargon pulled out of a google search, TV screenwriter style?

### Reply 10:
You have seen the site talks about 2 different miners? The one which looks like two antminers is build with bitfury chips, the second one will be developed within one year und is based on a cpu which was originale developed from 2013 onwards. Plan is put this cpu from 180nm to 28nm and increase the number off cells. <link>

### Reply 11:
You *do* know that 180nm is around the size that the last 486 CPU's used right? As in from around very early 2000's. 28nm CPU's arrived about 2013 and were soon supplanted by those using the 22nm node. 14/16nm CPU's hit the market late 2015-early 2016.No matter what - those folks are scammers trying to put a pig in a wedding dress and telling us it is beautiful.You really really need to know something about the points you are trying to support...

### Reply 12:
Well, I'll come back in a year and tell.

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    ""hardware_name"": ""Ebit E9 Plus"",
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22463,"Date: 2018-03
Topic: Antminer S9 doesn't turn on
### Original post:
I just got the march batch S9 from bitmain, i tried to turn it on using antminer PSU and it wont start. Strange thing is that I dont see any of the indicator lights turned on, just the fans are running. Has anyone seen or solved this issue?FYI, i already have a S9 (Dec batch), L3 and A3 running, never faced this issue with any of them.

### Reply 1:
Just opened a support ticket with bitmain, will update the post when they respond.

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24030,"Date: 2022-10
Topic: How to Identify Which Hashboard is Broken (S19 PRO)
### Original post:
Hello! Today I have several S19 Pros hashing at about 70 Th/s, all throwing up hash board errors. I am looking to consolidate the ones that are working and have a few fully functional miners vs seven almost-fully functional miners. The problem I am running into is I am not sure which hash boards are the broken ones - how does physically identify the malfunctioning hash board? The top exhaust fan is blowing cold if that helps.

### Reply 1:
Why not check the status of your miner by accessing the miner's IP under the dashboard>miner status?Or by checking the kernel logs it should show a few errors with chain # where you can know which hashboard is broken.

### Reply 2:
This is the maintenance manual for the S19 PRO, which contains the troubleshooting of the common faults of the S19 PRO.Antminer S19 Pro Hash Board Repair Guide

### Reply 3:
Looking at the log and looking at the manual can be a little overwhelming. To be slightly more specific, if you look at the manual (linked above) in section VII #4 You will find examples of the few lines of code Which youll find in your log which tell you exactly which hashboard has gone bad.

### Reply 4:
Pretty simple, by checking the status page or the kernel log you will see which board is bad, regadless of the numbering be it 0,1 and 2 or 4,5 and 6.Then look at the control board where the ribbon cable plugs, there will be some labeling that corrposned to the hash boards numbers, in fact, even if the labeling on the control board was different it does not matter if says 0,1,2 or even a,b,c you just need to figure out the sequence for one miner and apply the same logic to the rest.

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    ""hardware_name"": ""top exhaust fan"",
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    ""hardware_name"": ""miner's IP"",
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    ""hardware_name"": ""dashboard>miner status"",
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    ""hardware_name"": ""kernel logs"",
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    ""hardware_name"": ""control board"",
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    ""hardware_name"": ""ribbon cable"",
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]"
22310,"Date: 2018-01
Topic: S9 Special Care?
### Original post:
Hello. I have my first S9 Antminer and wanted to know...Any special maintenance care I should do daily, weekly, etc?What is the right way to power off/log off the Antminer?Anything I should avoid doing to it?Right now things are running well. Unit is averaging over 14 Th/s and chip temps are below 72 - 68 with fans below 5000.

### Reply 1:
If your miner is in a dusty environment I would blow it out once a month. Other than that there really isnt much to be done. You can just unplug the antminer, the OS that is on it is read only so you wont cause any problems just shutting it off. The only thing you should really avoid doing is rapid power cycling. These things will run for months at a time if you just let them be.

### Reply 2:
Thank you

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17241,"Date: 2012-08
Topic: Can someone please help me out with this? I just need some questions answered.
### Original post:
I have almost no knowledge about mining, but I'm interested in trying so if someone could help me out here, I'd be very grateful.I downloaded the GUIminer, mining in slush's pool right now. Is 182 Mhash/s any good, by the way? I have a gaming computer, so I thought the specs might be at the very least decent for mining. If not then I'll just stop now. Also, what would be the best route to choose right now- mining in a pool or individually? The GUIminer application couldn't identify Bitcoin-QT when I looked for it in the folder. Not sure what's wrong there, maybe it's a glitch or something. I just want to know if, right now, I'm doing everything perfectly. Also, will mining decrease the lifespan of my computer's components? I heard that AMD's give out sooner than Intels and Nvidia, so I don't want to have to replace anything at the moment. It would be a huge hassle for me. My CPU is an AMD 8150, and my GPU is an AMD Radeon 7770. I (think) I'm mining with my GPU right now, I picked the option called [0-0] Capeverde. Also, sorry for sounding like an idiot. I'm trying to provide as much information as I can at the moment, since I really know nothing about this. If you need me to provid<rest of post truncated>

### Reply 1:
Mine in a pool..... I would use cgminer over guiminer..... diakgcn kernel I would try a pool with a much lower fee 0%...

### Reply 2:
BTCGuild is the pool I wade around in, pool gives more consistant earnings, solo mining hit or miss, do ya feel lucky?could find a block first day or not find one for a year. As far as wear and tear, keep temps down and will last forever, heat is a bad thing for electronics, try to keep temps below 80C, mine currently are at 58 to 60C.

### Reply 3:
You're doing roughly the right things. Well actually, GPU mining is probably going to go dodo in the next few months, but given that, you're doing okay. But specifically:1) 182 MH/s: That seems a bit pathetic for a 7xxx Radeon. But it's one of the two entries in the usual guide (did you do that?), and the other is even lower, so maybe it's okay? Just seems a bit crap that's all.2) Pool. Not solo. Solo has not been a good idea for 99% of miners for at least a year now. I think if you could get around 50 GH/s, at current difficulty, that might make it worthwhile. So only 300 more cards to go!3) Don't know why guiminer can't see bitcoin-qt, but since you won't be solo mining, who cares?4) [0-0] Capeverde is indeed your GPU, not CPU.5) Mining shouldn't wear out any of your components except your GPU, and as long as you keep your GPU reasonably cool, it'll be fine for a few years. Go find some tools to check your GPU temperatures, and better still, your VRM temperatures if you can. The GPU should really stay below 75ish, the VRM will get hotter but below 95 should be okay. I presume you are using Windows? That's fine, except I've forgotten all about what tools you can get in Windows. If<rest of post truncated>

### Reply 4:
I could not lower the mem rate on my 7900 series... Unsure if he'll be able to on his 7700series.... I mentioned using cgminer with the diakgcn kernel. You want to try this kernel with the 7000 series.....

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23781,"Date: 2021-11
Topic: Avalon Log : BOOTBY[0x0.80000000] What does it mean?
### Original post:
Anyone know what does it mean?

### Reply 1:
Kind of hard to say when you deciced not to post the full log print.You can get a better answer by presenting a better question.

### Reply 2:
I tried to check it on the Canaan manual it seems there is no 0.0.800000000 it should be 0.08 and it refers to <truncated> at the image as a reference below.Your miner might have issue connecting to the pool. Are you mining on Nicehash with ASICboost server?Try to switch on other pool.

### Reply 3:
Thank you.

### Reply 4:
Hi, I still have a problem restarting the miner itself And today it happened on both machines at the same time and this is the log I collected. Please help me to check. I set up pool 1-2 with viabtc and 3 with nicehash. <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':43,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1202296.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[20744] <truncated> LW[20666241] MH[1015 480 1098] HW[2593] DH[6.679%] Temp[30] TMax[78] TAvg[65] Fan1[4932] Fan2[4873] Fan3[4830] Fan4[4849] FanR[65%] Vo[310] PS[0 1197 1240 261 3236 1240 3544] PLL0[6014 1112 1737 5057] PLL1[6201 664 1109 5946] PLL2[5691 1847 2536 3846] GHSspd[80057.21] DHspd[6.679%] GHSmm[86167.25] GHSavg[78003.17] WU[1089691.69] Freq[515.85] Led[0] MGHS[25884.02 26726.99 25392.15] MTmax[75 78 70] MTavg[65 67 63] TA[360] Core[A3201] PING[247] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[488 50<rest of post truncated>

### Reply 5:
Your logs seem still fine but bootby status is still ""pool inactive"" which I think the issue is the pool where you are trying to connect or maybe your ISP is blocking the pool. What server you currently test?Let me also know your internet speed? I couldn't find any other issue except the connection between the miner and pool. I suggest you don't focus on Nicehash try other pool listed here <link>

### Reply 6:
He already answered his own question in his previous thread ...<link>

### Reply 7:
I have a total of 4 avalon a1166 and their restarts are not happening at the same time. I mainly connect viabtc pool. My internet speed shown on the dashboard, the ping value is about 260 ms.I'll try to check my ISP or maybe add a link internet to support fail over.Thank you

### Reply 8:
That ping is pretty high what is your internet speed is it just 1mbps or 2mbps?If you have high-speed internet then you need to change your pool to another server with lesser ping.If you are mining on the ViaBTC pool try to change the port they only have 3 ports available Port 3333, 25 or 443Or all of them still have high ping you don't have a choice instead switch to another pool I've already given you a link from my previous posts.

### Reply 9:
I have high speed internet 300/300 Mbps.I tried switching to Binance pool, the ping test result was 68 ms, much better.and I will continue to monitor, Thank you

### Reply 10:
Update After moving to Binance pool, got a good ping.But the machine still restarts itself with <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> 5m':6365660.11,'MHS <truncated> <truncated> <truncated> Failures':0,'Local Work':481,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1211432.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[69] <truncated> LW[18041] MH[8 1 0] HW[9] DH[0.000%] Temp[30] TMax[66] TAvg[55] Fan1[6018] Fan2[5986] Fan3[5938] Fan4[5948] FanR[77%] Vo[310] PS[0 1193 1240 243 3013 1240 3359] PLL0[4834 2309 3016 3761] PLL1[3770 1748 2657 5745] PLL2[6163 2938 2626 2193] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[29391.71] WU[410597.44] Freq[0.00] Led[0] MGHS[9924.47 11324.08 8143.16] MTmax[65 66 59] MTavg[55 57 53] TA[360] Core[A3201] PING[69] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[480 500 520 540] SF1[480 500 520 540] SF2[480 500 520 540] PVT_T0[ 53 56 58 59 60 58 57 59 59 59 58 57 57 58 61 59 59 60 54 62 60 65 60<rest of post truncated>

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13694,"Date: 2021-06
Topic: Awesome Miner No Longer Showing Wallet Balance
### Original post:
Awesome Miner recently stopped showing wallet balances. I was using the ""<link> API. Is anyone else having issues getting their bitcoin balances at all?

### Reply 1:
I have been using AM for a few years now, never really used the wallet balance feature at all, anyway, you will have a lot more chances in getting the answer in a speedy manner by posting in AM own thread, or if you want, you could contact Patrike directly.

### Reply 2:
Thanks so much! I will head over there.

### Reply 3:
If you still didn't receive any response yet on the official thread or PM from Patrike you can try this API below.Code:<link> the <link> with the above API and replace the [address] with your own address. I got it from his old post from here <link> another alternative you can use this below provided from awesome miner support solution from here ""Wallet Balance""Code:<link>

### Reply 4:
Hmmm It's still not working. How do you type it in correctly? I am using my public address. It keeps coming up saying it can't get balance.<link>

### Reply 5:
From what I see in your image you didn't change the address under the URL that I give you above. Here look at this mineFrom thisCode:<link> thisCode:<link>

",[]
14280,"Date: 2011-06
Topic: CPU Mining on 50+ system
### Original post:
Hi guys, I know CPU mining is not cost effective with the electricity cost and all that. But I pay a fixed-priced electricity bill and have over 50 systems at my disposale (outside office hours). I've tried some of these systems the other day, but they all have old on-board video-cards. So GPU mining is a no-go. I tried running GUIminer an diablo miner, but they both tell me there is no openCL device and just sit there doing nothing. Is there any miner out there that I can configure to use CPU mining only? All of these systems use Intel CPU's. Both Linux and Windows are fine. Oh, and of course I want them to Pool in deepbit.

### Reply 1:
<link> CPU miner so far to my knowledge.

### Reply 2:
I'll try it out. Supports deepbit?

### Reply 3:
as somebody has said in another thread. Don't get caught or get in trouble over something like that.You can spend $400-500 and have a setup that will pull more Mh than all of those cpu's combined.

### Reply 4:
Won't assrape the planet either (as badly), if that means anything to you.

### Reply 5:
50 systems, *if* they can do 2MHs (this is about an Athlon X2), nets you ~100MHs.If you have something like Intel i7s... Now you're talking 500MHs.From the sounds of it (onboard video, office, etc) I'm going to guess you have some older PCs with 50/60W PSUs.PXE booting would be pretty easy to set up and ideal. Throw together a simple Linux image (or just use one of the LiveCDs) and add ufasoft's cpuminer. See what you get!

### Reply 6:
I'm not worried about getting in trouble. It's my company. appreciate the concern though. I'm just curious on how much I gen get out of these, not expecting too much. Just want to do some bitcoin related stuff without buying more mining gear.

### Reply 7:
Hi,As mentioned before in this topic - ufasoft is the best for CPU mining.If all ports out are blocked except http (80) in your company then i recommend using eligius EU pool which runs on port 80 !To see exactly how many MH/sec you get, run 'cpuz' on the machines to determine the CPU and then check the <link> for the speed of your CPU and multiply by 50.Hope this helps you.Don't get discouraged by all the ""CPUs are not worth it"" talks, if that is what you have, then use it !

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21341,"Date: 2017-04
Topic: MOVED: msi z77a-g45 Anakart aldık üzerine 3
### Original post:
This topic has been moved to Trashcan.<link> English altcoin mining discussion

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16203,"Date: 2022-01
Topic: why does one miner not mine all blocks?
### Original post:
Guys, I have a one very noob question. .If the ""fastest"" miner is the successful one and gets the mining rewards, why does that same one not get all of the rewards, if it's the fastest? Is there a regulation that one should maybe skip a block or something?

### Reply 1:
I guess you'll have to read the whitepaper....But no, the fastest miner won't solve all the blocks.I'll try to give you a very, very, very simplified example:You have a big swimming pool filled with numbered balls... There are 1.000.000.000.000 balls in the pool, each ball is numbered incrementally (from 0 to 999.999.999.999). Your task is to draw a ball with number 100 or less (that's the difficulty). If you find this ball, you get $1000 (the block reward) and any coins hidden inside the ball (the fees). If it takes to long for a ""good"" ball to be found, the consensus is that the number 100 might shift upwards or downwards (the difficulty retarget), this is checked every x ""correct"" balls that have been found. If it took to long for the network to ""solve"" the problem, they might change the difficulty to ""all balls equal or less than 120 are good"", if (on average) the time between 2 ""good"" balls being found was to short, the difficulty might change to ""all balls equal or less than 80 are considered good"".By hand, you can check 1 ball per second...Let's assume you have a machine that draws and checks 100 balls per second (the fastest asic), will this machine be guaranteed to ""win"" e<rest of post truncated>

### Reply 2:
Simplest explanation:It's random.2 people: A rolls 1000 dice and B rolls 1 dice.You win when you roll a 6A can't stop B rolling a 6Thus A gets (on average) 1000 times the reward of B ... but B still gets his reward.Or ... <link>

### Reply 3:
Yes, indeed, a large percentage depends on luck here, for example, a fresh example according to the CKPool pool administrator on January 11, an unknown bitcoin miner with an equipment capacity of 126 TH/s found solo block 718 124 <link> , the probability of success with the current bitcoin hashrate was less than 0.0001%. <link>

### Reply 4:
Except that every block found is by a miner 150TH or less at the moment.Every single block found.Nothing unexpected about that.Simply a case that some people have lots of miners ... but when they find a block, only one of their miners found it.--Currently a 126TH/s miner has a 1 in 9,615.5 chance of finding a block, if they mine for 1 full day - so it's 0.01% ... ... ...If they mine for all 14 days during this difficulty it's 1 in 686.8 chance or 0.146% ... etc.Really funny how people never understand the simple statistics of mining ... but go rabid when someone posts what people have been posting here on the forum for years ... that's twitter for you - full of twits Pity he can't do math ... though he has no computing degree so I guess that explains it.

### Reply 5:
I think the core misconception here was that only one person can have 'the fastest miner' and that one such miner is enough to dwarf the entirety of the rest of the mining community. To mine all blocks, in simple terms you'd need a large majority of the hashpower under your control. Like, not just one of 'the fastest miner', but tons of them. Also, all the 'not fastest' miners, aren't just produced once or twice, but thousands of times, so collectively they have a ton of power and a collectively extremely high likelihood to mine a block.We have so much hashpower distributed more or less over the whole world, that even if you develop the latest, greatest, cutting-edge, 1nm-whatever ultra-efficient, ground-breaking, out-of-world mining chip... You would still need to probably invest billions into producing a heckton of them as well as tons of infrastructure and buildings to run them all under your control. (to more or less guarantee 'mining all the blocks')

### Reply 6:
Almost Your % of the network decides your % of the blocks found.If, however, you have more than 50% of the network, you 'could' keep orphaning all other blocks found by only building off your own blocks.Though it wouldn't make any sense to lower the fiat value of your mined BTC - since the fiat value of BTC would of course drop if only one entity was mining all the blocks in such a way.

### Reply 7:
On January 24, an unknown solo bitcoin miner with an equipment capacity of 86 TH/s found block 720175 in the blockchain, as reported by the administrator of the CKPool pool, Con Kolivas, and this is the third such case in a month, some damn lucky pool for single miners. <link>

### Reply 8:
You really should correct that erroneous twitter report when reporting about it.As the block information shows they ran 8.6T, not 86.... Their 7-day peak rate was 86T (rental?) for the user but the current speed was 8.31TThe speeds for the worker found it -- more impressive! Current worker speed was 3.65T, 5-min avg was 3.25T, 1hr was 3.32, 1 day was 3.41 and 7-<rest of thread truncated>
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    ""hardware_name"": ""Current worker speed was 3.65T"",
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14482,"Date: 2011-10
Topic: smartcoin - all miners are showing as idle, can't find smartcoin log in home dir
### Original post:
Hi,I seem to have set everything up correct. I'm am already running instances on each GPU through dtach but still smartcoin should be able to start another instance albeit slow to update.Any ideas or pointers? Thanks.

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20861,"Date: 2016-01
Topic: Antminer S5 Shut Down Unexpectedly
### Original post:
I managed to get hold of an Antminer S5. Not knowing what had been done to it before, I reset it to it's factory defaults, configured it for me, and put it to work.It is running in an unused room where the temperature is about 40 degrees.It ran well for about two days and then about 10 hours ago the hash rate dropped about 50%. About an hour ago, it stopped hashing completely.I had shut it off and then turn it back on to get it working again. It appears to have resumed normal operation.Doing a quick search, I see others have remarked about it's fan control possibly being the problem. The info is a bit dated.Has this issue been resolved?If firmware is needed, etc., please direct me to a proper link I can believe for BitMain. So many scam links it seems in the world.Thanks

### Reply 1:
mmh, 40 is a bit too much for any HW, gpu would suffer greatly with such temperature the same will apply to any asicyou better to move it to a place which is more cooler, around 25-30 at max, otherwise you are certainly decreasing the lifespan of your device

### Reply 2:
Thanks for the reply. The room temperature is 40F and I think you may be thinking 40C.

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22214,"Date: 2018-01
Topic: E9+ 9th only mine 7?
### Original post:
I get no issues, temps is around 45cit is the e9+ 9th but i do only mine around 7 sometimes it goes up to around 8.Any1 know what can be <truncated> Hash Ratethe miner is 1,5 month old with new psu

### Reply 1:
Ebits are just kind of crappy miners. I have a bunch of the 6.3T e9's that only run around 5.5T no matter what I do to them.

### Reply 2:
So theres nothing i can do? ive seen almost everyone with the 9th have around 9th am i that unlucky only?

### Reply 3:
On the settings page to your e9+ did you set the frequency to 750? Mine was set at 500 when I got it.<link>

### Reply 4:
gonna check it thank you

### Reply 5:
Thank you!That was the problem. around 8,9-9,1 now

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    ""hardware_name"": ""6.3T e9"",
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16152,"Date: 2021-10
Topic: Need hosting company
### Original post:
Hi,Can anyone recommend some hosting companies? Need to host some miners.Thanks.

### Reply 1:
I have had great success using Compass Mining. They have options to host there and also can purchase ASICs through them that they will ship to your home. The only downside is if you want to host with them you have to buy through them and they have limited availability right now. Which makes sense given the current state of crypto demand.

### Reply 2:
Got it. Thanks.

### Reply 3:
Hi! Wherere you from? How many miners do you need to host?

### Reply 4:
I'm in the US. Are you a hosting company?

### Reply 5:
Do you have alternative of compass mining?

### Reply 6:
Does anyone know there's any for Ontario, Canada??

### Reply 7:
No, Im not a hosting company but I have a land and want to build it, but its not in US. I just doing some research to understand is it interested for people or not. (If it will be a big farm, I can receive really low price electricity, lower than 0.04$, if not, 0.055-0.075$. Its in Ukraine. Now I live in Ireland and have near me company which have 1+MW green electricity, but here price for electricity is so big. I think people not so interested to send mining equipment to different countries. In Ireland all company which work with crypto have to be registered by law.

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14323,"Date: 2011-06
Topic: Remote Power Switch - Rebooting Computer via Hard Reset Remotely
### Original post:
My mining operation is starting to get quite a bit larger, and in a few days I'll have my rigs on a separate power meter to take advantage of commercial rates within my residence (Still so damn expensive in California!!).It hasn't been a problem yet, outside of testing systems for overclock potential, but I would like to know if anybody here has experience with hard rebooting computers remotely by turning the power on/off. I know in large data centers there is the capability to actually shut the power off through an internet interface (normally via SSH/telnet), even when the computer itself has locked up to the point it cannot be accessed.At this time, I'd probably need 2 that can hook up 4 devices each, or one device that has it's own power circuits and can draw power from two different outlets and split it among 8 devices.

### Reply 1:
BUMPI have the same problem. One of my rig is not responding via SSH. I want to reboot the machine from a remote location. Can I buy a device that can short the reset or power pins on the motherboard via a remote call or something ?

### Reply 2:
Honestly the cheapest way is probably to build something yourself with an Arduino & xbee. A relay to close the pins is all you need, and you'd have plenty of pins available with even a standard arduino. You could probably get someone to build something for you cheaper than buying an off the shelf product.Your options are basically1) UPS with remote control capability to remote switch off power ports. Without a high end unit, this will be done through USB and still require a controlling computer to manage it. I'm not even sure how expensive a unit with this capability would be2) get server motherboards with remote management (IPMI) that allows you to control the unit directly. These are likely only going to have 1 PCIe 16x slot and will be much more expensive than similarly priced consumer-level hardware3) roll your own

### Reply 3:
unless your OS hangs constantly(which it shouldn't, even Win7 is quite stable and can run for months without problem), I don't think it's worth it. Just set your BIOS to auto reboot on power loss.

### Reply 4:
Some motherboards (server ones) have an IPMI interface that can be used to connect to the m/b on a out of band channel, reset or power cycle it.You can also connect when the server is powered off!I know that you can add IPMI addons to some m/b but I don't know the details.Since I've only used them on (wonderful) servers and I love them I would be interested in knowing if someone knows if they can be added to regular motherboards.

### Reply 5:
How about something like this: <link>

### Reply 6:
The Avocent Direct_PDU is perfect.<link> don't know of any way to combine circuits like that.

### Reply 7:
I use 1U PDU from APC. You can control individual ports over SNMP, switching on, switching off, or rebooting.<link>

### Reply 8:
this... or any other manufacturer of them.. APC being higher end. i was going to dig one out of the storage area here at work to use on my miner...

### Reply 9:
I've been very happy with the APC AP9211 and similar units. They're often available used on eBay for less than $100 including the Ethernet interface. You can connect via <link> telnet, and several other methods. Personally I just have a VPN set up so I can get to the network, and connect via the web interface to reboot machines. They can be scripted to do fancy stuff like STONITH when setting up clusters, but the web interface has been more than enough for my needs in both mining and managing the office servers.

### Reply 10:
You can also get switches that automatically ping device and hard reset if ping doesn't respond. Will try to find some and post them.

### Reply 11:
oh hai<link> you could invest in watchdog hardware or use a kernel with a software watchdog.<link> build one, as someone suggested...

### Reply 12:
I think I find a solution. 1 - buy this network controlled power switch for $78 +shipping <link> - enable wake on lan on your mining machines.3 - if a machine does not respond. I can reset the power for this machine with the power switch. After I can boot the machine with WOL on my router. DD-WRT and tomato can do <truncated>

### Reply 13:
I like this one alot:<link> may pick one up myself soon!

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    ""hardware_name"": ""UPS with remote control capability"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""server motherboards with remote management (IPMI)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IPMI addons"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avocent Direct_PDU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1U PDU from APC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APC AP9211"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network controlled power switch"",
    ""hardware_is_owned"": false
  }
]"
11797,"Date: 2012-02
Topic: BTCMiner - Open Source Bitcoin Miner for ZTEX FPGA Boards, 200+ MH/s on LX150
### Original post:
Thank you for your time. USB issue is solved with the other computer. I ended up gluing down the heatsinks with cementit. Works very well for the working unit but it has something... let's say ""final"" in it. I have to check the psu tomorrow. I'm not saying this is your fault, just try to find a solution. A 120mm fan should be good enough for two boards. I run Win 7 btw

### Reply 1:
That happens just seconds after i start the boards... countdown to <truncated> bus <truncated> New device: <truncated> f_default=192.00MHz f_max=222.00MHz <truncated> FPGA configuration time: 294 <truncated> Set frequency to 192.00MHzStarting mining thread for bus bus-0-0bus-0-0: <truncated> <truncated> New device: <truncated> f_default=192.00MHz f_max=222.00MHz <truncated> FPGA configuration time: 295 <truncated> Set frequency to 192.00MHzbus-0-0: <truncated> addedSummary:Bus bus-0-0 : 2 devicesTotal : 2 devicesDisconnect all devices or press Ctrl-C for exit.Press ""r"" Enter for <truncated> <truncated> Using LongPolling URL <link> <truncated> Set frequency to 186.00MHzbus-0-0: <truncated> Set frequency to 192.00MHzbus-0-0: <truncated> Set frequency to 186.00MHzbus-0-0: <truncated> Set frequency to 192.00MHzNew block detected by long pollingbus-0-0: <truncated> Set frequency to 186.00MHzbus-0-0: <truncated> f=192.00MHz, errorRate=0.00%, maxErrorRate=0.00%, hash rate: 192.0MH/s, submitted 2 new nonces, submitted hash rate 143.2MH/sbus-0-0: <truncated> f=186.00MHz, maxErrorRate=2.99%, submitted4 new nonces, submitted hash rate 286.3MH/sbus-0-0: poll loop time: 35ms (USB: 2ms network: <rest of post truncated>

### Reply 2:
Why you did'nt use the adhesive pads delivered with the boards. They have an Aluminum carrier.Try out the ""ztex_ufm1_15d1"" firmware of the new release.I'm sure it is no Monday chip. All FPGA boards are tested and AFAIR the FPGA boards you got have even been tested with the BTCMiner. Give me the last 3 digits of the serial number (you see it if you start the FPGA board in single mode with no firmware in EEPROM or with closed jumper). I will complete the number (as proof that it has been tested) and tell you which BTCMiner ran on this board.

### Reply 3:
I did use the pads first but i ran into the same problems. 1.15d1 won't help. I also think that this i not a thermal problem. I tried it with everything possible. 6 MHz at 100% error rate that's a joke. Even with an improper heatsink the board should do 100 MHz and that heatsink fits perfect, it's flat and down on the chip.At least it does something <truncated> New device: <truncated> f_default=192.00MHz f_max=224.00MHz <truncated> FPGA configuration time: 295 <truncated> Set frequency to 192.00MHzDisconnect device or press Ctrl-C for <truncated> Using LongPolling URL <link> block detected by long <truncated> f=192.00MHz, errorRate=0.00%, hash rate: 192.0MH/s,submitted 0 new nonces, submitted hash rate <truncated> f=192.00MHz, errorRate=0.00%, hash rate: 192.0MH/s,submitted 1 new nonces, submitted hash rate <truncated> f=192.00MHz, errorRate=0.00%, <truncated> rate: 192.0MH/s, submitted 0 new nonces, submitted hash rate <truncated> f=192.00MHz, errorRate=0.00%, <truncated> rate: 192.0MH/s, submitted 1 new nonces, submitted hash rate <truncated> Set frequency to <truncated> Set frequency to <truncated> f=192.00MHz, errorRate=4.82%, <truncated> rate: 182.8MH/s, submitted 1 new nonces<rest of post truncated>

### Reply 4:
I'm quite sure that I tested you boards with some BTCMiner version. I asked you for the serial number in order to verify that.There a a few possible reasons:The FPGA has been damaged by overheating (I warned you that these devices are more diffucult to cool)Something with the power supply is not correct. Switch the Experimental boards and try out another power supply. Make sure that I send you Experimental Boards 1.3 (1.2 are to weak).Almost impossible: The bitstream does not work on your FPGA for some reason. This can be excluded by sending me the serial number.

### Reply 5:
FPGA damage is the most realistic thing in my eyes. The rest is working. I did not run them without heatsink but sometimes shit happens... who knows. That's life. Another lesson learned. I play around with older miner versions. Perhaps something helps.

### Reply 6:
Check the things about the power supply as I wrote: Swap the Experimental boards and try out another power supply. Make sure that I send you Experimental Boards 1.3 (If I accidentally delivered a 1.2 board this explains it.)If you try out older versions you will run into some trouble because old BTCMiner versions does not accept the new Firmware you installed in EEPROM.Easiest method: Power-on with closed jumper and try it out in single board mode, see <link> you want to install old firmware: Power on with closed jumper, remove jumper and install the Firmware using the old BTCMiner version.

### Repl<rest of thread truncated>
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  {
    ""hardware_name"": ""psu"",
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  {
    ""hardware_name"": ""120mm fan"",
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    ""hardware_name"": ""adhesive pads"",
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    ""hardware_name"": ""Experimental Boards 1.3"",
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    ""hardware_name"": ""Experimental Boards 1.2"",
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13717,"Date: 2021-09
Topic: Ebit manager tool problem
### Original post:
I have an ebang e10.2 asic miner ,i cant find device ip in my network , default setting is not DHCP, the previous manager tools dosent work in lan use to do that(i have done it befor) , and there is no file to download on their web site, how can i change it , is there any software to change network setting in direct connection mode ? Please help me

","[
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    ""hardware_name"": ""ebang e10.2 asic miner"",
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22049,"Date: 2017-12
Topic: November Batch S9 not hashing, doesnt seem to be hardware PLEASE HELP
### Original post:
I bought this antminer S9 off of ebay. Seller showed me proof of all boards working before he sent it to me (serial numbers matched and checked out).All boards looks okay, nothing looks or smells burnt. Running on an evga 1600 T2 PSU from 120v outlet. What is strange though is hardware and bminer version appear blank. Also, there looks like a couple errors are showing on the bottom of the kernel log..<link> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Emb<rest of post truncated>

### Reply 1:
How long are you waiting until you think it's not running and you kill the power? 10 to 20 minutes is common for nothing to show for the status before it finally starts hashing away as expected.

### Reply 2:
I ran it for over an hour and a half and it still had nothing but zeros on the miner status page

### Reply 3:
upgraded firmware, now 2 boards show a red light and it still isn't hashing ugh

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16635,"Date: 2011-06
Topic: Verification Fail, Check Hardward. Need Help!!
### Original post:
probably floating error within 2nd GPU. and/or partial failure of GPU itself.note: not always GPU fail plain and open in smoke and explosions. frequently its pretend to work, but do it with [various]errors. RMA it or leave for <truncated> in GPU vendor service lab.

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11979,"Date: 2012-08
Topic: CGMINER GPU FPGA overclock monitor fanspeed GCN RPC linux/windows 2.6.2
### Original post:
What does the intensity flag meanis lower more intense? higher more intense? doesn't seem right as 8, 9 seem more mhash, lower or higher intensity gave me lower mhash

### Reply 1:
Higher intensity means higher hash rate in general. Intensity is basically how aggressive the miner is on the card.

### Reply 2:
im getting driver crash at only 750mhz 1.085 v, 725/1.05v is the stock 5970

### Reply 3:
somethings wrong with 2.6.2 and bfls, feels like they run slower somehow, im off to 2.6.1 again

### Reply 4:
What did you feel that with ...

### Reply 5:
I believe that place is called buttocks

### Reply 6:
I'm assuming the version, 2.3.1, 2.6.1, 2.6.2 has no bearing on hashrate for my 5000 series (3x5970's)thats' what it seems through my limited testing of just opening, watching the hash sort of stabilize within 10 minutesbut jumps up and down sometimes, 1900->2000, to 2122. 100mhash jumps, now just 1995 to 222 then to 2063, 1800, 1750, not switching pools or anythingnot running anything else on this PC, not using dynamic clock change, only fan change to desired temperature

### Reply 7:
An Xubuntu 11.04 executable in my github downloads called cgminer-2.6.2a of course<link> anyone who didn't realise, it's just the executable file to put in place of 'cgminer'Nothing else needs changingFirst get and extract the full binary release from ckolivas and then copy my file in place of 'cgminer'No Problems so far on my GPU or 2xIcarusNote the BFL comment above by ckolivas For me it works perfectly after a 60 second hiccup at the start.The same configure options as cvolivas' binary versionIn case anyone was <truncated> -W -Wall"" ./configure --enable-icarus --enable-bitforce --enable-ztex --enable-modminer <truncated> and I have also added a WinXP <truncated> ONLY has BFL + ICA (as below) thus it doesn't need a computer with OpenCL on itIt doesn't automatically identify the BFL or ICA you need to specify them with -SCFLAGS=""-O2 -W -Wall"" ./configure --enable-icarus <truncated> will most likely also need the windowsdlls.zip file there in my downloads since my *.dll might be slightly different to ckolivasLast time I made a windows exe for someone they needed my versions of the *.dll so you may need them also

### Reply 8:
Thank you; made me laugh.

### Reply 9:
2.6.1 vs 2.6.2 on same settings:.1 = ~150MH.2 = ~100MHcopied config file and running from same command line options.Win7 64Rolling back to 2.6.1 for now, something is changed in intesity?

### Reply 10:
Nope, nothing changed in that code.

### Reply 11:
oops, looks like something eat me one core and miner not have enough priority.It works same now Sorry!It (miner) is not very cpu hungry (taking about 1-2%), but better to rise it priority to ""above normal"".

### Reply 12:
I always run cgminer at ""realtime"" priority!

### Reply 13:
Really? Does that make a difference in hash rate?Sam

### Reply 14:
I've been running 2.6.2 for awhile now, and ran into the BFL error again, but it seemed to recover faster than with 2.6.1-9.Code: cgminer version 2.6.2 - Started: [2012-08-03 <truncated> (avg):1607.1 Mh/s | Q:1338 A:18444 R:118 HW:0 E:1378% U:22.2/mTQ: 4 ST: 2 SS: 10 DW: 151 NB: 111 LW: 18514 GF: 106 RF: 23Connected to <link> with LP as user ---Block: <truncated> Started: <truncated> management [S]ettings [D]isplay options [Q]uitBFL 0: 56.8C | 764.5/803.5Mh/s | A:9223 R:54 HW:0 U:11.11/mBFL 1: 59.3C | 795.5/803.6Mh/s | A:9224 R:64 HW:0 <truncated> 00:49:49] Accepted 642b0a10.439f01a5 BFL 1 pool 0[2012-08-04 00:49:49] Accepted 99bc51ae.af7b0fb2 BFL 0 pool 0[2012-08-04 00:49:55] Accepted c1141456.8d3bc2e8 BFL 1 pool 0[2012-08-04 00:49:55] Accepted af80a22c.8ede0eb0 BFL 0 pool 0[2012-08-04 00:50:00] Accepted 2051832a.8ec1030b BFL 1 pool 0[2012-08-04 00:50:11] Accepted 2348c318.bfdc7136 BFL 1 pool 0[2012-08-04 00:50:21] Accepted 1437218f.aa9cdb6a BFL 1 pool 0[2012-08-04 00:50:21] BFL0: Error: Get temp returned empty string/timed out[2012-08-04 00:50:26] BFL0: Error: Get result reports: Temperature (celcius): 57.8[2012-08-04 00:50:26] Accepted 099e869b.522a22ef BFL 1 pool 0[2012-08-04 0<rest of post truncated>

### Reply 15:
Thought this might interest someone: setting intensity on the 6850 to, say, 3-8 make no more then a .5MH/s difference. So anyone using a 6850 for a display card and mining at the same time intensity 3 is great. 250Mh/s

### Reply 16:
That's great. It means there was perhaps a single throttling incident and the code changes I made allowed it to recover fairly quickly.

### Reply 17:
Using integrated graphics, i found I can mine with CGMiner and newest radeon driverHowever [replace with But here if you like But's]It doesn't apply my overclock settings and gives me this message on startup, wondering how I would code to fix it if possible:""ADL found less devices than opencl!There is possibly more than one display attached to a GPUUse the gpu map featur<rest of thread truncated>
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    ""hardware_name"": ""GPU"",
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23763,"Date: 2021-11
Topic: S19J PRO - Help with repair
### Original post:
Hello,i have board where only 21 chips found. Resistors around chips 21 and 22 are good.I changed chip 21 and 22, but same result, only 21 chips was found.I used this repair manual :Code:<link> layout chips different between S19 PRO and S19J PRO ?Or chips from Alibaba are bad ? .Soldering is good, checked twice under <truncated>

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    ""hardware_name"": ""chip 21"",
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    ""hardware_name"": ""chip 22"",
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17294,"Date: 2012-11
Topic: updating poclbm in guiminer
### Original post:
poclbm has been updated recently but guiminer hasn't had it's version of poclbm updated. I thought I would try to update poclbm by just replacing all the files in the poclbm directory <truncated> and the guiminer dir etc etc) but that didn't work.Has anyone had any luck updating the poclbm inside guiminer?

",[]
22308,"Date: 2018-01
Topic: Can someone with S9 Experience view my Miner Status.. I'm concerned :(
### Original post:
Hey guys. New to mining so I'm not sure if these very large values are concerning or not.<link> sure if this image will show... it might be ""you need to post a bit before you can"" situation.If it is and you cant see the screen shot my most concerning value is DiffA# on Pool 0 shows = 2,748,234,968Chain 6 HW# is = 8495Temps for all three chips are as follows = 72 (chain 6 chip), 66, 66Fan 3 = 4,320Fan 6 = 5,160It has been running for 10 days 1 hour.If someone can help me understand that be great. Thanks.

### Reply 1:
You're fine.

### Reply 2:
Thanks Raymond.Is there a link or manual that explains the different categories and what they actually mean or refer to?What are potential limits for these various categories?Other then keeping temps in not above the 70s and having all zeros in the ASIC Status I'm pretty green.full link to image: <link>

### Reply 3:
There's really isn't, I wish there was. Search this forum, you'll find that it's safe to run these things quite a bit higher than 70* Celsius. Honestly as long as it's hashing pretty close to its specified rate and not running more than 80C (my limit, others run quite a bit higher) or so just leave it be and let it make BTC

### Reply 4:
Thanks fellas.By all means I'm not touching a thing I just would like to be more educated on the hardware and how to monitor it for long term stability and not be reactionary if something were to happen.Anyhow I will do a bit more searching around. If I find anything worth noting I will plug it in to this thread.

### Reply 5:
Some here run at 90C all the time. Presumably that temperature is fine for these chips.

### Reply 6:
If I'm not mistaken, ""DiffA#"" is the total combined difficulty of accepted shares. For example, in your screenshot the current difficulty shows 11.7K, so an accepted share would add 11.7K to the ""DiffA#"" reading. Over time this number should get quite large. Everything in your screenshot looks great. If anything, your temps are even a little cooler than they need to be.

### Reply 7:
Miner is running FINE....sweetBut the stales and rejects are insane bad...BAD CONNECTIVITY to POOL !!!!!!!!!!!!!

### Reply 8:
DiffA is a good thing. you want that number to be as high as possible.HW errors are consistent with run time - look at the HW percentage. Normal for how long you have been running.Temps and Fan speeds are fine.

### Reply 9:
Thanks guys for the positive feedback. I appreciate the breakdown, every piece of detail helps with the knowledge base.I'm concerned about:So, I have a hardline connection to my Xfinity modem to the S9. I get 150Mbps on download and 11Mbps on upload from a wireless connection on 2.4G.Not sure why I would have connectivity issues??Are there any logs on the S9 I could post that would show this in more detail to confirm this?

### Reply 10:
Dont listen to this. There is nothing wrong with any of your stats.

### Reply 11:
Thanks for the reply... I wish we did not have conflicting info on the same post.But, I guess that would only be possible in a perfect world.How there is not a document that simply states what all the categories are of the S9, what they specifically stand for...and where they should be running for optimization and when there are reaching limits. That would be grand.

### Reply 12:
The connectivity to the pool is not necessarily on your end - it could be the pool. I have seen other people with pool connection problems, particularly with antpool since it is in China and the traffic has to traverse the ""great firewall of China"". If possible, use a pool that is geographically close to you, that will help to ensure that you have good connectivity to the pool that you are using.

### Reply 13:
I'm in Slush. East coast.

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16076,"Date: 2021-06
Topic: WhatsMiner M30 open ports -connect remotely by part forwarding
### Original post:
Why not use software instead to remote all of those ASIC miners?You can try Remote Agent AwesomeMiner so that you can remotely access your all ASIC miner you just need a remote PC connected on the network with ASIC miner.If you don't want to run a PC 24/7 you can try raspberry pi connect it to the same network and install the remote agent for Linux. The installer can be found here <link> for the installation guide you can find it here <link>

### Reply 1:
thanks for your message.as you mentioned, the problem is I don't have extra free PC to put there.I will check your solution.

### Reply 2:
I research a bit here on the forum and most of what I heard about port forwarding is risky your miner can be scan easily by hackers who scanning IPs and ports 24/7. If they found your IP and open port then they can remotely access your miner and they are going to inject a virus. If you don't have an extra pc to remote then your last option is to set up a VPN in your router much secured compared to port forwarding.Read these threads below.- <link> <link>

### Reply 3:
Thanks for your time.My router has the VPN server option by itself and it made my work so easy.anyway, I'm still interesting to find how can remote a WhatsMiner machine by port forwarding. (just for my knowledge and maybe I need to use it in future)

### Reply 4:
It's not up to Whatsminer to accept or deny the access, if you can locally access the miner on port 80 then you should be able to do so remotely, I believe your router could be blocking you because Whatsminer GUI has an issue with CA root cerficiate, most firewalls will flag it so this could be the reason why, you do to need to play with your router security settings which isn't something I would recommend, port forwarding to your miners is risky and things could go wrong.You really need an extra PC on-site to be somehow on the safer side, it doesn't need to be a fancy one, get the cheapest one you can, I am sure you can find something for $100 or so, if you can't afford it, wait until you can.

### Reply 5:
HiI want to connect to my miners remotely (not from local network) and I'm trying port forwarding.I have Antminer , InnoSilicon and WhatsMiner.AntMiner and InnoSilicon configed easily by using port 80 but for WhatsMiner, it's not accept port 80.Also I tired port 24 and 8080.Just it's accepting port 4028 but it's for API and return me a message.I want to access to config/status page of Miner.Can anyone help me to do it?Regards,

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    ""hardware_name"": ""Antminer"",
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    ""hardware_name"": ""InnoSilicon"",
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10556,"Date: 2017-09
Topic: Anybody experience with this reseller of Antminers ?
### Original post:
hello everybody,does anybody have any experience with this reseller of antminers?<link> are they just another scam as usual ?just got this in my pm box today.thank you

### Reply 1:
looks pretty scammish to me...lol.I still got a few unpaid for pre orders for some d3's and L3+'s though if interested message me. They are about to expire today or tomorrow though if they arent paid for asap.. But yeah, you would have to trust me enough to pay for the orders cause the shipping address cannot be changed once order is placed..so they would be shipped to my address then id have to ship them to you..Dont expect alot of people to be comfortable doing it this way but I am already doing this for a few people surprisingly, I am giving the buyers pictures of my Drivers license and screenshots of the orders so they know i am the person who placed the orders and so you know my address and details before paying for them. Anyways, let me know if you would like to find out more info. Gotta hurry though, about to expire. Peace& <3KayaMan

### Reply 2:
I got my Bitmain Antminer D3 through a reseller called CryptoCrane on Amazon. So far it's working great and I got it pretty quickly.

### Reply 3:
Russian site ! but they look like thy will take VISA card ?

### Reply 4:
First rule of Bitcointalk spam is that if anything random ends up in your inbox, it has been spread by bots and therefore it's pretty much useless. Anything advertised like this should be ignored no matter what it is and you should red trust the user for spam.The site is clearly fake and it's not worth your time. Buying from eBay or Amazon is better than this, and prices there are extremely high, much more than what some forum members charge for in stock items.

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  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer D3"",
    ""hardware_is_owned"": true
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15795,"Date: 2016-08
Topic: An open letter to the miners
### Original post:
Dear miners,I am a bitcoin investor, speculator, end user. I am asking you, no i am begging you, JUST DO IT!I know you do not want to offend anyone or step on some toes; you want to make sure that when you put the 2MB limit in place it is because we have reached ""consensus"" on the issue. I BEG YOU, do not delay any longer, assert your power! do not wait for somthing that may never happen, do not let a dev believe they know better than you, or have more power than you, they don't, show them! let them feel the wrath of your hashes, Command their respect!Put in place the 2MB limit TODAY, without their ""approval"". Put out some code of your own, gather >51% hashing power, and FORK us to the next level! if this offends the some poeple / core devs and they rage quit, GOOD! we dont want them trying to control bitcoin, it is not for them to control, bitcoin is OURS not theirs! amass 51% and take control!As an investor / speculator, I promise you, if you can demonstrate that bitcoin's destiny isn't in the hands of any one group, but requires vast amounts of power to sway one way or the other,and that no amount of FUD can stop you/us; I will value bitcoin much more.Time is now, do not delay, <rest of post truncated>

### Reply 1:
I would say that doing this ""today"" would probably be a bit reckless, however provided there is sufficient support/consensus, they could decide today that the maximum block size is going to rise to 2MB in two weeks in order to give others sufficient time to upgrade their software to support the HF

### Reply 2:
<link> holding a vote. Most have abstained or not bothered so it's irrelevant but those who have voted are way in the majority for the Classic proposal.

### Reply 3:
Is it crucial if they DONT do it? What would happen ?

### Reply 4:
It is crucial that they don't do it. Because if they do, they won't be able to spend their coins anywhere, or sell them, since nobody else is running their code. Their coins will be worthless and they'll have wasted their money mining them. It makes no difference whether they have 51% or not. Fortunately, miners are smarter than OP and won't do this.

### Reply 5:
None of this is necessarily true. Part of what gives Bitcoin it's value is it's security, and if a large amount of the hashpower were to suddenly stop securing the Bitcoin network, then some people may wish to join a network that has a higher amount of security (e.g. the network that has 2MB blocks). Furthermore, the economic majority is in favor of raising the maximum block size, so it would be likely that most Bitcoin related companies would use the 2MB branch of the fork

### Reply 6:
AFAIK there's an agreement on place for the 2MB upgrade but just without the exact date at the moment. These changes shouldn't be right away as there will be some sort of collateral damage as result so instead it should go through a transitional phase in which will give enough time to everyone to switch. Taking control of 51% of hashing power is not as easy as it looks (easier said than done), and by saying taking control, you mean making in centralized (somehow) on that matter which is the opposite of what BTCitcoin supposed to be.

### Reply 7:
I have 700Gh/s pointed at Slushpool. They gave me a vote. I have posted on the mining pool threads as i do not know which way to vote. Don't understand the risk, don't trust people to give a straight answer. Will prob go with the flow; and it looks classic at the mo.I don't think miners share information freely, it is dominated by a few pool owners that (intentionally or not) control debate. Slush has a thread on this forum but it is moderated by one of his competitors so he don't post. Don't seem fair to me. But it is a bit klicky.What should I vote? I was thinking of starting a voting thread

### Reply 8:
yesyou must become politically active or you will get schlonged!

### Reply 9:
I thought this issue s been resolved. The only question s when will it get implemented. Why do you raise it again here?

### Reply 10:
There are 79.56% miners who have not decided which to go for and stick to the default bitcoin core. Is there any way to allow them to mine 50% core and 50% classic?This will change to % of classic to 79.56%/2 + 16.76% = over 56%!

### Reply 11:
No miner representation. I tried to get people interested in a International Bitcoin Miners Union so we could get some conscientious on such issues but it got jumped on. Plus, no one seems interested. See the link in my signature.(quick joke: Q) What's the difference between a Doctor and God, A) God doesn't think he's a Doctor )edit: Looks like someone already tried. Shame, the thread was locked in no time. <link> descution and a vote would have helped me understand. I thaught that was what forums were aboutIs this forum is a dictatorship? And closed to a select few?Looks like we have to do as we are told or fuck off

### Reply 12:
How can i get thi<rest of thread truncated>
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4231,"Date: 2012-11
Topic: Modminer Quad
### Original post:
Has anyone been able to get the Modminer Quad to work with eldentryls TML. If so are you able to post some instructions.

### Reply 1:
Sorry to appear flippant, but allow me to voice the unsaid flippant remark that all (so far) 113 viewers of this thread already have done in their internal dialogue: there is a search feature, use it. The reason? Because anyone else would have to do the same, on your behalf, so why are they doing the work for you? Computer geeks are just like that really, they've spent countless thousands of hours looking for answers to problems that they'd have preferred was all collected together into one tidy little webpage, telling them exactly everything they needed to know for whatever pressing technical problem they were trying to solve, and that it appeared at the top of the very first search they performed with the very keyword/keyphrase they were expecting to find it under. It rarely turns out that way, sadly. Except in this case. The answer is likely spread out among the dedicated ModMiner and TML threads, if I recall correctly. Get searching.

### Reply 2:
I did search and found the modminerquad.com website followed the instructions and they didn't work because they were for an older tml version so that is why I'm asking here.

### Reply 3:
Try this<link>

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17304,"Date: 2012-11
Topic: ISP shut down my Intenet!
### Original post:
Ok so I just got off the phone with my ISP. They have been detecting a ""virus"" and have shut down my connection because they FEEL like I am infecting other people. Of course, what they are seeing is the IRC P2P activity from my miners. I told them it is not a virus and they refuse to accept my explanation. I told them I would turn off the program if they would just give my internet back (temporary fix).My question to you guys is, what should I do now? Is there a way around my snooping ISP? I feel like I have two options right now, 1. Stop mining. 2. Change ISPs. Also I have been mining on and off for more than a year now. Hoping some people can help me out here. Has anyone else experienced anything like this?

### Reply 1:
Where do you live and who is your ISP?

### Reply 2:
This kind of thing has come up before, and in every case that I can recall, it turned out that the ISP wasn't really combating viri but trying to clamp down on Bittorrent or some other P2P tech that takes a lot of bandwidth. They can't really say it that way, though. Why would your miners be consuming a lot of bandwidth? You should only have one that is 'net facing while the rest just connect to each other and that one. If nothing else, you can port that one's connection over Tor, although that will slow things down. A ssh tunnel to an off-isp-network shell account would work well.

### Reply 3:
I live in Ontario, Canada. My ISP is Rogers.Ok I have 2 computers with 5 miners (cards). I use Deepbit and GUI miner (used to use POCLBM but switched recently). For the last while I have been running only one computer which has 2 miners. My question to you is: does the mining software take a lot of bandwidth? I can't imagine it being more bandwidth than downloading a torrent. Also, will porting through the TOR network really hide the packets from my ISP? I never had a use for TOR so I am unfamiliar with it.

### Reply 4:
Yeah it looks like I have to go rogue from now on. Oh well, maybe I can grab me some American Netflix while I'm at it. The Canadian one sux!

### Reply 5:
Only while trying to download the blockchain, like any other client. Ongoing, not so much, no.If set up correctly, yes.

### Reply 6:
If you are just mining on a pool this should not cause irc traffic. Mining also does not use a lot of bandwith. My 1 GH/s was like 2kb/s up/down, thats not much. Option 2 sounds like a solid plan imho.

### Reply 7:
OK, I'm going to help you get to the bottom of the issue in a simple step by step fashion.Call Rogers' support.You'll be connected to level 1 support. These guys are clueless.So ask to talk to level 2 support. Politely, of course. You know they're losers but they can cockblock you, so be nice.At this point you'll be talking to engineers. Disregard them, for their methods to figure out what's wrong with your internet connection are naturally limited to the practice of science, and that methodology and epistemology -- clearly, as you have already been debriefed by Rogers -- is beneath the problem that is afflicting your internet connection.So tell them to connect you to level 3.When they patch you through, you'll finally have reached level 3 support. This is where the Internet Shamans work. They, and only they, can FEEL your internet connection, and they can FEEL the viruses that your computer is distributing over the internet. These privileged and magical individuals, in their infinite benevolence and with their infallible judgment that privileges oneness with the internet universe, will surely be able to restore harmony to your computing system.You're welcome :-)

### Reply 8:
lol my ISP shut me down for 15-40Gbps international UDP flood (and this after half the city was without google for a day... and u get cut-off for mining this is crazy. Change the ISP ASAP and check your network for malicious software just in case

### Reply 9:
Are you a Rogers level 3 technician? LoL...what do I say to these guys once I get there? ""I'm mining Bitcoins, please stop flagging my connection as an IRC bot, thanx""??

### Reply 10:
Rogers sucks man......... Where are you located.... Get cogeco...

### Reply 11:
If you tell the Internet Shamans that you are mining Bitcoin, they will be able to feel your computing system in oneness with the universe and the common good, verify that to be the case, and they'll restore your service.But no, seriously this time, level 3 is usually understanding of this and will be able to determine that your activity is legit. One tip: don't act apologetic (your activities are legitimate), but don't act belligerent either -- simply explain that there has been a misunderstanding somewhere down the line, your Bitcoin mining was misidentified as IRC botnet activity, and you'd love to continue being their customer so you'll expect them to help you swiftly resolve the issue. Of course, if they still insist, ask them to share some tangible evidence so you can addre<rest of thread truncated>
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24150,"Date: 2023-08
Topic: Innosilicon T2T-30T
### Original post:
Hi everyone, today I stumbled across a problem that Ive been trying to solve for hours.I have a few Innosilicon T2T-26T that I got for cheap some time ago, they are as good as new, anyway all of them restarted in the night, when checking them in the morning everything was fine but one.When accessing the one with the problem, the main page (miner status) never loads anything, but is weird because the miner is responsive, I can access the other web pages: overview, firmware upgrade, pool configuration, etc. But in the pool it shows as not hashing.Ive tried everything I could think of: rebooting the miner (from the web page, and with the button reset), factory reset (from the web page, and button), changing pools, changing the Ethernet cable, changing networks, trying to update the firmware (it already has the latest one). Nothing works...Has anyone ever had this trouble? Were you able to solve it?Thanks in advance, I really dont know any more ideas for solutions.

### Reply 1:
Actually, the information we got from your post above is not enough we don't know what the cause of this issue if you can share the logs here maybe we can give you some solution to fix this issue.However, would you mind to try clear your browser's cache it might fix your issue.

### Reply 2:
The first thing I would want to eliminate would be the possibility of a browser issue, use a different browser to access the status page to check if there is any difference, you could also use a free monitoring software like AwesomMiner just to check the status of the miner with that issue, now once you confirm that it's indeed an internal issue, here is a list of the things you can do.- Take out the control board and put it in a different miner to see if it acts any differently.- Flash an older firmware version (probably not accessible unless you contact Inno's support.If all fails, then chances are your control board is out and you need to replace it.What is more important is to find out why would all your miners restart, there could be an underlying issue causing them to do so, and what happened to this miner could happen to the rest, have you figured out the reason for the mass reboot?

### Reply 3:
I had this happened on and off for my three innos. eventually they all acted like the ops dead one.

### Reply 4:
Update : used the innominer to check the error and it happened to be error 30which is unable to connect to pools Weird because i didn't change anything in the settings and it just happens I'd like like to note that once every week one of the miners (they are 3) works with no problems for one day and it goes back to being deadPool I'm using is binance pools I've tried antpool but that didn't work at allIm gonna try Nicehash today If anybody has any solutions to what could the problem be for error 30 on the inno miners i would appreciate it

### Reply 5:
Is there any device connected to the router?What I think is it might be an IP conflict and maybe one of your devices uses the same IP as the affected miner.What I would like you to try is to remove all non-affected miners and other devices connected to the same router and then leave the affected miner and PC/Laptop on the same router and try to access it again.If it didn't work replug/reboot the router and check the router if it is set to DHCP mode and then if you can access the miner set it to static and put the right IP and DNS.

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9738,"Date: 2016-03
Topic: Import taxes for antminer S5 in australia?
### Original post:
Hello all. I wasn't sure where to ask this question:I'm not from Australia, but have a friend there. So I wanted to know if it may be cheaper to import an antminer S5 there from China?Actually I'm not thinking of buying one, but of maybe redeeming one from hashnest when it becomes unprofitable. I guess it will be seen as an import by customs anyway and I will have to pay an import tax.If you know the answer or where to find it, it would be useful to make a decision. Thanks!

### Reply 1:
There are no taxes at the moment, unless it is worth more than $1000.So you will be fine for anything valued at under $999.99

### Reply 2:
Thanks for the info! Do you know if you have to be a permanent resident to legally receive an import? My friend there is only passing for a couple of months.Note: I was thinking of just asking by PM but I think this info may be useful to someone in the future who has the same question

### Reply 3:
You'll be fine.No laws about being a permanent resident to receive a package. As long as it's under the $1000 mark in declared value.

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23917,"Date: 2022-04
Topic: Avalon 1126 or 1246 immersion.
### Original post:
Hello Im wondering if someone have this miners on immersion cooling systems, if yes could you please tell me what did with the fans. I ask to the Avalon support and never answered me, and I couldnt find any spoofer what work on this models. Thanks.

### Reply 1:
Mostly what I heard here on the forum they use 555 timers to make a fake fan signal. There are some fan simulators but if you know 555 timers it would be enough to give a fake fan signal for this unit.Read this thread below to get idea about 555timer- <link>

### Reply 2:
I have 2 avalons A1246 in inmersion, you dont need fan spoofers, the dashboard will show the fans on red but dont worry about because it will hash like nothing happens, there are some fan spoofers and i have some but are not needed.

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16139,"Date: 2021-10
Topic: Construction of mega Bitcoin mining farm in Argentina
### Original post:
one of the most well known mining company ""Bitfarms"" is set to establish a mining station in Argentina with the project target to employ about 55,000 miners by the end of 2022, this is a great opportunity placed on for the people in terms of employment and poverty alleviation, Cryptocurrency is truly giving back to the community indeed with diverse opportunities.one of the focus challenges to be encountered through this process is the energy source required (power supply) and a desirable location for the site to be stationed. this project target on Bitfarms focal view in a bid to seeking a new location to site another of it mega mining company at, Bitfarms start construction of mega Bitcoin mining farm in Argentinain furtherance to this, are there other suitable locations that could be of greater advantage of power supply with infrastructural conditions favourable for accommodation within Argentina while contrary opinions on this development is welcome.

",[]
24092,"Date: 2023-02
Topic: AvalonMiner 1246
### Original post:
Hello AllI bought 2 of these miners from Aliexpress AvalonMiner 1246 they both where mining fine till one packed up after a week and a half. They did not overheat as I live in UK and it is cold in my garage the hottest board was around 70 to 72 I have been back and forth with seller but they either are useless or know what problem is and don't care I am no expert but I thought since I had two the first thing I swapped was the PSU with no success so today I swapped the control board still no good. My problem is I cant understand how all 3 boards could go down I am contemplating swapping a board but I know there are experts here so I thought I could show log and someone could point me in right direction.Many thanks for any advice<link>

### Reply 1:
Hello! I'm not sure I understand everything, but your miner seems to work, it looks like a configuration problem, I'll leave you these few links, maybe they can help you, I had an avalon usb miner, but that's all what I can do<link> github or on the ""holy bitcoin store"" you could be informed

### Reply 2:
Bootby said it has no hashrate and the systemstatus says you only have one hashboard detected.Maybe the PSU you replaced is defective or incompatible with your unit.However, the logs say a few hashboard have lost contact try the cable if they do have a connection if it doesn't have any connection replace them or if it still doesn't work the two hashboard might be already broken. Try to run them one by one to check which detected normally and then swap PSU wires and cables to other hashboard that are not detected to the detected one to test.

### Reply 3:
It seems that the fan is not automatically running at high speed after the hash board reaches its temp limit.Would you mind to try aging to calibrate the miner?Use the FMS tool to aging the miner you can download the tool here <link> is 3 FMS tool only one has an aging button so download the 2nd or I think the 3rd one from that link.

### Reply 4:
Is it stuck on scanning? Would you mind to try to hold the func button for 15sec from your miner while the FMS tool is scanning if didn't work try the rst button?If still stuck on scanning it might be your PC firewall blocking it from scanning. Try to disable the firewall first and try again.

### Reply 5:
I already post it before from my previous post that you can try aging just download the tool from Canaan the link is already my post above. Make sure to download version 2.3.3 because the other FMS tool doesn't have the aging button that's the easier one.However, you can download other FMS tools and use commands to aging the miner. You can find commands on my old post below including the Aging command.- <link>

### Reply 6:
If you start the aging process without 3 good hash boards then it will be stuck in aging-mode until you fix the hash boards. All versions of FMS have the command line tool: click the diagnose button.

### Reply 7:
The unit is in normal mode, it needs to be in High Performance mode (Configuration tab on the backstage, after changing click Reboot). None of your fans are connect/working. Only found 1 hash board with 120 total ASICS, indicating possible hash board problems. Your SF is not the same as your ATABD's, either the frequency command was entered or it is auto-tuning to shut down due to no hash rate in 5 minutes.

### Reply 8:
On your backstage log it indicates ""WORKMODE[0]"". Which means your unit is in normal operation mode, so I will never reach within 6% of designated hash rate. Click on the "">Configuration"" link on the backstage, then at the very bottom change the ""Mode:"" dropdown to ""High Performance"". Click 'Reboot' and it should fully hash.

### Reply 9:
Based in your logs what I see is that the two hashboards are overheating and your tmax is reach more than 85c this can cause miner to stop hashing.What I would like you to try is to cool down your miner try to put extra fan and make sure to exhaust hotair/heat from the room.You can also run the fan at 90% or full speed to help hashboard to cool down.You can use this command below to increase the fan <truncated> can submit this command using FMS under diagnose.

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22720,"Date: 2018-08
Topic: I just got my Ebit E9 miner, need help setting it up
### Original post:
Hi all, i just recieved my EBIT E9 miner i'm confused as to how to set it up the interface is in chinese and i don't know how to set it up if anyone can help me it is appreciated

### Reply 1:
You can read my guide. The link is in my signature space.You can use Google Chrome web browser and then use the translate tool to translate the page from Chinese to English.

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14128,"Date: 2011-06
Topic: 400mhps gaming rig interested in joining a pool, please suggest.
### Original post:
Trying to get some feedback on which pools are considered to be better out there and are setup to pay more for large-ish contributors. It would be left to run at max for at least 16 hours/day and at a reduced rate the rest of the time. Thanks,Zetas

### Reply 1:
don't forget all the medium sized pools like btcguild, and btcmine

### Reply 2:
You can help www.simplecoin.us with their efforts. Their you it will take about a week or two to get a payout but you will be working in a tiny pool with about the same megahashes so pay out will be pretty big(maybe around the 20-30BTC range).

### Reply 3:
I'll just leave this here ... BTC Guild

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13730,"Date: 2021-12
Topic: Antminer Hack S9 /S15 / S17 / Sx aso. SSH and so on for free
### Original post:
HACK FIRMWARE and SSH and EXPLOIT for freeFIRMWAREbuy this ftdi <link> cooltherm <link> Mac/Win/Linux/Raspi (DONATE)connect to any antminer boardConnect ftdi to usbstart CoolTermSet 115000power on your minerlogin as usual: root adminCode:vi <truncated> line <truncated> (move with up and press d to remove a line. 77 and 78 are the last fi on that function)press ESC : wqopen your antminer website and upload what ever you wantSSH on any Antminerbuy this ftdi <link> cooltherm <link> Mac/Win/Linux/Raspi (DONATE)connect to any antminer boardConnect ftdi to usbstart CoolTermSet 115000login as usual: root <truncated> -t rsa -f <truncated> -yreboot -fpower off your antminerdisconnect ftdi power onlogin via ssh as usualEXPLOIT Antminer (not only S15 or 17)The exploit uses a security issue on Lig<link> your selfif you use Kali Linux search for XSS, Lig<link> remote executionIt's hard to find but not impossible!do not spend any cent on this exploit use the above instructionsif you have found the script use dos2linux to convert the script (it's a Win script)the code to execute is: dropbearkey -t rsa -f <truncated> -yWhy? Because if you set a new dropbearkey ssh service will start from alone Sto<rest of post truncated>

### Reply 1:
Or you can do it without buying any tools: <link> released it for free. If you like the tool, try ASICseer itself

### Reply 2:
This tool doesn't work, I've already tried it, others have too with no luck.Also asicseer has devfee and some of the devs / leaders are bcash proponents

### Reply 3:
What are the advantages of performing this hack? What can we do with it that cannot be done without it?

### Reply 4:
The newest bitmain firmware disables ssh on boot, therefore you can not ssh into machines. Its not a big deal if you have a few machines, but there are many farms out there with hundreds or thousands of miners that automate configuration and reboots using software, this new firmware removes the ability. They quote ""security"", but its bologna. Why not give the end user a choice to turn ssh on or off through portal. Any end user with a couple machines can turn ssh off, and farms that tunnel through firewalls can leave it on, our choice. They are purposely making larger mining operations lives harder to get an upper hand.

### Reply 5:
You can do all necessary configurations, get kernel logs, do reboots etc. all through the cgi pages on the web portal. It is actually much faster than SSH on these miners because they always sit for a few seconds before you can connect via ssh.Large mining operations can easily have someone to tweak their scripts and how they do configurations. However, unexperienced and smaller users who are clueless could easily get an ssh virus if any infected miners or control boards are put on the same network.

### Reply 6:
Ah ok. I got it. Absolutely agreed. There's no point in avoiding SSH connections because sooner or later someone will make it happen one way or another.What about the exploit? What can one do with it?

### Reply 7:
This is not true and it probably means your LAN or your computer aren't performing properly, or you are using Putty or some bloated windows client rather than proper openssh from a proper operating system.The other reason most people want ssh access is to enable the other api controls that require editing some text file. There is also diagnostics and the multitude of things you can do from a proper Linux box, as these controllers actually are, such as network debug and configuration. I have often changed dns via ssh which from ui requires a reboot which is a travesty.And yes there are the people using scripts to automate things, why not? you can do the whole thing without ever looking at the web ui. How are you seriously going to say that a web ui is faster than a text console? It is an order of magnitude slower, simply by data transferred alone lets ignore web browser rendering... Have i seen Bitmain miners with the web ui stuck that are actually still mining? Yes i have...s3binator is right, the alleged ""security"" thing is bologna, and yes, a simple ui option would at least give the owner a choice, but they don't care. Want security? Start with setting a proper password, then rem<rest of post truncated>

### Reply 8:
Hum, ok. I've learnt more in the last few posts here than with the thread instructions themselves.I use Linux at home by default and I like the advantages of not have to deal with constant bugs and errors of window based systems and applications. I absolutely agree witht he problem of 90% or more of malware spreading mostly through Windows machines. Nothing like a terminal to avoid a ton of problems!I like the idea of being possible to access miners through an SSH connection. If I have get a miner in my hands, I'll try to do everything via <truncated>

### Reply 9:
This is just for S9, we are talking about S15/S17, solutions <rest of thread truncated>
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14205,"Date: 2011-06
Topic: Difficulty = 567358
### Original post:
So: mining is now 30% harder than it used to be before.

### Reply 1:
at least it did not jump to +78.1% like the previous time!

### Reply 2:
was about to post this, you beat me!theres only one thing to do guys.... buy more GPUs lol

### Reply 3:
Difficulty posts are like posting ""FIRST!!"" in a blog.FOURTH!!!

### Reply 4:
I'm curious to see how this effects the market.

### Reply 5:
))Waiting for HD 7990 with 6400 ALUs!

### Reply 6:
This was easy because price stagnated for a while. I bet next jump will be to >10^6

### Reply 7:
Before the last reset we saw rapid growth in hashing rate, and then a significant drop off after the reset. Once again the hashing rate grew significantly before today's reset to a higher level. Is this the effect of casual miners losing interest when the difficulty resets? Time to throw another 6950 into the mix. It's a decent room heater as a bonus (winter here).

### Reply 8:
I bet 800 - 850k.

### Reply 9:
According to <link> the next difficilty would be MONSTROUS <truncated> hope there is a mistake somewhere...

### Reply 10:
I hope you're wrong about that. That would be 400% ? Hypothetically, if an increase like that occurred, how long would it take to go back down assuming drastically slowed production of blocks ?

### Reply 11:
how does that work? what I see is 771795.76943028

### Reply 12:
This happens all the time after difficulty jumps. It is due to the way it's calculated. Give it 12-24 hours to readjust - then you'll see real estimation. Also, if you noticed total hashing power is displayed as >7Th/s which is nonsense. We ""only"" have about 4.5

### Reply 13:
Well, that is not my assumption! These are rough facts taken from <link> noticed that before difficulty increase the network total spped was ~ 5.7 Thash/s and now it is ~ 7.5 Thash/s!!!What are those machines that do such a huge influx to the network? Or is it again a calculation mistake?

### Reply 14:
It's my understanding that 400% is the maximum increase.And as for how long it would take to go back down - it wouldn't, unless people stopped mining. If difficulty and hashing power were in balance then the difficulty wouldn't change. And if the next jump in difficulty were 400% then that would suggest that there was even more extra hashing power in the network (because the chances that the amount of hashing power in the network warranted exactly the maximum increase in difficulty is pretty small).EDIT: current estimate of next difficulty is 771795, ""only"" a 36% increase

### Reply 15:
Uhhhh! Indeed it is O_o I sware it showed that number!

### Reply 16:
Calmed me down a little))

### Reply 17:
It's due to the way the estimate is calculated.The script basically looks at the number of blocks found in the last x hours (24? 12? don't know), and assumes they all had a difficulty of the *CURRENT* difficulty, although the current difficulty is now ~30% higher than yesterday. So the script ""thinks"" those blocks from yesterday were just as difficult to find as today. Of course, they were actually easier to find, so the script overestimates the current network hashrate. Because it thinks the hashrate is higher, it will also estimate a much higher difficulty.

### Reply 18:
1044054.51192240 now....but if the price keeps going up, earning less BTC is OK...

### Reply 19:
They could just take the time between last block + this block and calculate which hashrate you'd need to solve it theoretically in exactly this amount of time.Very lucky short rounds would cause huge spike though, so these numbers then would need to be averaged out again, but it would handle difficulty changes very well + fast.Could be even done on historic blockexplorer date quite easily. Anyone up for an afternoon challenge?

### Reply 20:
I say 700k Mining is now constrained by the supply of ati cards.

### Reply 21:
As for now 1BTC=$19.2 on MtGox

### Reply 22:
<link> <-- difficulty increase, and BAM! 1.2 USD more...

### Reply 23:
Yeah, I was wondering that too, yesterday the pool was hovering around 4-4.5 TH/sec and this morning it's up to almost 7.6 TH/sec. On the plus side, all those people freaking out about Deepbit closing in on 50% of the network power at 2 TH/sec can stop worrying...

### Reply 24:
I wonder if anyone has correlated the price increases yet with the difficulty factor? Surely this will relate in some way....

### Reply 25:
I dont mean to sound like a noob, but can someone break down the concept between how much ghash power you need per difficulty level. How do the two bump heads? what is the concept behind the two given we just had an increase in difficulty that means that it is 30% harder to find a block mining at the current speed that you were but how do you justify that? just curious.

### Reply 26:
It's simple: The network was designed to produce a new block every 10 minutes.If miners add a lot of GPUs, then the hashrate goes up and a block is found every 6 minutes i<rest of thread truncated>
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    ""hardware_name"": ""HD 7990"",
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    ""hardware_name"": ""6950"",
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14275,"Date: 2011-06
Topic: Cooling Question - Exhaust Hot or Intake Cool?
### Original post:
So I've got a few mining rigs set up in one room and it's starting to got hot as balls in there with temps fluctuating from 80 to 88 F throughout the day. Doesn't help we've been mid to high 90's every day for weeks. The room is decent sized and has two big windows. So my question is, would it be better to stick a window AC unit in one of the windows and have it pump cool air into the room, or would it be better to get 1 or 2 window fans and have it trying to pull the hot air from inside and exhaust it outside?Even though it's hot, I'm not seeing any of the cards go over 75c, and those are usually the ones in the middle of other cards.

### Reply 1:
The fans would create a lower pressure in the room blowing the air out, resulting in air being sucked in from somewhere. Most likely it'll be from other parts of the house that's also hot.An AC would be the best bet, since it actually cools the air and blowing it in, not merely shuffles air around.

### Reply 2:
if the air is REALLY hot, blow it out. otherwise, spot cool the cards.

### Reply 3:
Yeah, it's not sauna hot in there, but like I said, it gets up in the high 80's in that room. Rest of the house has central air and has been staying pretty close to 76-78 where I put the thermostats. I have an AC unit lying around, I might just try that because I can put it pretty close to where the cards are all located and I it'll regulate itself with it's thermostat instead of just staying on 24x7 like the fans would.

### Reply 4:
Creature comfort is the big factoryou will benefit from the ac tooas a general rule it is better to exaust hot air

### Reply 5:
Exhaust the hot air, that way you arent using a second AC to cool the entire room, you're just getting rid of the hot air and drawing in cool air from the rest of the house.

### Reply 6:
If the AC is of portable kind, where you have a hose that expels hot air through the window, it will be a win-win since this also creates a negative pressure, pulling cool air from the rest of the house.Otherwise if the house is cool, then it's actually any way that's good. The question would be if you want to be able to control the temperature in the room yourself, or want to rely on the temperature of the rest of the house.

### Reply 7:
do both. get the hot air out and get cool air coming in from the AC.. that should solve this. especially if it is only a few rigs.

### Reply 8:
Is the room sealed off from the rest of the house? I wouldn't want my windows open when it's 90 degrees or hotter outside! But if it's sealed off, the fans could be quite effective.

### Reply 9:
If you are you cooling the rest of the house it doesn't make sense to open a window. Because really the rig room will need to be a higher airflow mirror of the rest of the house. If you have AC running it will not behoove you to whip open a bunch of windows and cause an equillibrium attempt. If you rely on fans or are just tough enough to take the heat then opening windows is by all means a good idea, but if not you are wasting all the energy used by the AC to dump heat outside.The best thing would be if you could create an in-room circulation effect. Blow in cool air (on the low side for a 1 opening room) and blow out hot air (on the high side). General air mixing would be fine too though, you really just want that room to try to equalize with the rest of the house (since that is cool already). If electricity bill isn't a concern though, another AC would be spot on.

### Reply 10:
Room is somewhat sealed off. Has a door I can shut that really blocks it off from the house. There are two central AC drops in the room, but I can close those off as well. Opening the window will probably be fine come fall/winter, but right now it's mid to high 90's during the day and dropping down to 80 or so at night.I did put the small AC unit I had in the window to test it out and it works great, but started causing power issues That little unit drew 4 AMP's and almost 450 watts while running. The spike during startup was enough to trip the breaker once so I ran an extension from a neighboring room that's on another circuit.I think I might just need to split some of the machines up due to power/cooling issues of having it all in one room. Which is a shame because I had a nice setup where I mounted mobo risers into a 2 x 4 sheet of plywood and have 3 motherboards running on it on a good sized table.I guess I could just run some extensions from other circuits, but as it stands, I'm gonna have 4 machines with 15 GPU's running in that room :p

### Reply 11:
Do you have any pictures of your setup? That sounds awesome. I'm a more humble miner, working off my gaming rig. But I'd really consider pouring some of my earnings into another rig.

### Reply 12:
I'm in the midst of moving stuff around. I'll snap a few pics when I get a chance and post them up.

### Reply 13:
You should get a wall ac unit and<rest of thread truncated>
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    ""hardware_name"": ""mobo risers"",
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  },
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    ""hardware_name"": ""motherboards"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""gaming rig"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""wall ac unit"",
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]"
22542,"Date: 2018-04
Topic: Avalon 841, 0RPM, 0PG, 0Hash
### Original post:
Going to check on it physically tomorrow, anyone seen this before? It also comes in and out of the cgminer status list. This is chained to four other miners with it being in position 4, position 5 is reporting fine. If there is a PSU issue, will it still report in due to the daisy chaining?Code: [MM ID4] => <truncated> <truncated> Elapsed[52] MW[0 0 0 0] LW[0] MH[0 0 0 0] HW[0] Temp[24] TMax[24] Fan[0] FanR[100%] Vi[1214 1214 1220 1220] Vo[29 31 38 38] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] PLL3[0 0 0 0] GHSmm[0.00] WU[0.00] Freq[0.00] PG[0] Led[0] MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW3[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] TA[104] ECHU[1 1 1 1] ECMM[197] FAC0[4] OC[0] SF0[0 0 0 775] SF1[0 0 0 775] SF2[0 0 0 775] SF3[0 0 0 775] PMUV[0000 0000] PVT_T0[-40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40] PVT_T1[-273 -273 -273 -273 -273 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40 -40] PVT_T2[-273 -273 -273 -273 -273 -40 -40 -40 -40 -40 -40 -40 -40<rest of post truncated>

### Reply 1:
Thanks for the help! The Avalon 8 error codes are on github too and basically are the same.

### Reply 2:
I cant say for sure but it looks like you have quite a few error codes.<link> the link to Error codes, found in the ECHU and ECMM. The codes are additive.I think you have the 128, 64, 4, and 1. would show as you (197)I don't have an 841 so I can't say for sure if these are their codes, I'm also not at home so I can't confirm but your VO (voltage out looks out of wack as well), this could mean something like a bad PMU. The number 4 code is no fan detected so that might be the issue. You might want to post a link asking for help in this thread.<link> the OP recently received some training from Canaan.

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20849,"Date: 2016-01
Topic: problem with S3 antminer
### Original post:
I have an S3 where previously had a speed of 430 GH / S but overnight low working speed 220 GH / S someone could help me with this problem?I am new to mining. I gave reset the computer, you change the source of power (1200W) and continues with the same problem.

### Reply 1:
Looks like you have a bad blade.Open it and make sure your cables a correctly connected.Inspect and smell for burns.

### Reply 2:
Also do you have both plugs plugged in? And what model/brand PSU are you using?And also when you do your inspecting make sure to turn it off and unplug it. Might run it after with hood off just be careful with inspecting as then it would have live electricity going through it.

### Reply 3:
Since OP mentioned that it used to run at full speed, I doubt a cable randomly disconnected.I would rather bet on the fact that one of your blade died, it will need to be replaced or repaired. IMO, I doubt it would be worth doing so with the current difficulty.

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  },
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    ""hardware_name"": ""power source (1200W)"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""blade"",
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    ""hardware_name"": ""cables"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""PSU"",
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]"
13820,"Date: 2023-04
Topic: Firmware for Innosilicon miner - there is?
### Original post:
Hi guys!I have an innosilicon T3+ miner. I have been looking for an aftermarket firmware, like Braiins and Hiveon for Antminer.Are there any, if so which ones do you use and can you recommend?Thanks in advance!/Magnus

### Reply 1:
Have you checked their website for the firmware? If not yet then check this link below - <link> If you are looking for upgrade guide you can also check this guide - <link>

### Reply 2:
I have enter the ip address, firmware tab and press update. But guess I have the latest firmware.I was looking more after a firmware with more options like Braiins. To be able to tune each board, change tempature, fans.....I google and search on youtube but nothing comes up, maybe because of a reason?

### Reply 3:
Currently, there is no custom/modded firmware available for this unit maybe in the future awesomeminer is planning to support it.Or maybe find someone to swap your miner to Bitmain units because this unit is more flexible than other units like whatsminer, innosilicon, and Avalon.

### Reply 4:
Thanks for that information, then I know:)

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    ""hardware_name"": ""Bitmain units"",
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22272,"Date: 2018-01
Topic: Replacement fans for S9
### Original post:
Hi Folks,Just wondering what fans do the pro miners use when the fans on the S9 die? Don't have that issue yet but want to be prepared. Thanks.

### Reply 1:
For example, Delta QFR1212GHE and Sanyo 9GV1212P1J01 are good quality cooling fans for a S9 replacement fan.

### Reply 2:
Thanks, HagssFin and Fanatic

### Reply 3:
I have my fans custom made in China.Officially they are AV Cool Model: YD12038H12B but im not sure if they are even sold publicly.You basically need a 6000 rpm fan that is at least 2.5a to replace them.

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    ""hardware_name"": ""Sanyo 9GV1212P1J01"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AV Cool Model: YD12038H12B"",
    ""hardware_is_owned"": true
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]"
17224,"Date: 2012-08
Topic: Overclocking my Radeon HD 5830
### Original post:
For some reason, when I am Bitcoin mining with CGMiner the ""current clock"" doesn't match my ""max clock."" Help on getting my hashrate to above 300 mh/s?

### Reply 1:
Try removing --auto-gpu flag.

### Reply 2:
Hmm, that seemed to stabilize the rate at ~250 mh/s, but CAPS viewer still shows the current clocks at stock speeds and max clocks at CGMiner's parameter-set speeds.

### Reply 3:
Can you check using GPU-Z?. It makes a graph with your clocks, voltages and temperatures.

### Reply 4:
Increase worksize to 256 and intensity to 10?

### Reply 5:
It looks like you set the clocks of the wrong performance level. There are 3 performance levels (low medium high) depending on the load of the gpu. It's not smart enough to pick the highest frequency out of the 3, it just sets to perf levels and obeys the clocks of each one.You probably changed clocks of your low or medium perf level.Also not sure on this one, but your bat file is pretty long.. why not use a config file? It would be a lot more neater and human-readable.

### Reply 6:
Btw, your user login/password for workers shouldn't be anything that you feel uncomfortable sharing on the forumsMine on Ozcoin are Valalvax.1 and Valalvax.2 for the worker and a for the password (anyone want to mine for me? Lol)That monitor thing looks like a complete ripoff of CPUID, what does CGMiner say the clock is at?

### Reply 7:
I have never had success with arguments via a .bat file with CG. I do everything through the .conf file in order to get it working properly. I would say try editing that (you can set up failover pools as well) and try that to see if you get the desired results.

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9644,"Date: 2016-01
Topic: running antminer s5 with no fan?
### Original post:
Hi.I plan to start a project of creating an oil cooled antminer s5 system, mostly for fun and educational purposes. I want to see, through transparent oil, my ant miner creating bitcoins in my living room with nearly no sound The present plan is easy. 1) Submerge an antminer s5 into a bath of oil.2) Cool down the heated oil by other means. I plan to use a (car?) radiator where I will pump the heated oil through using a small fan submerged in oil.Challenge 1. I want to remove the original 120mm fan attached to s5. I think that it will be too strong and disturbing if running inside the oil bath.Questions.1) Will s5 still run OK when the stock fan is disconnected from the system and the power pins for the fan left open?2) If ""no"" in 1, is it a simple way to trick s5 to make it works with no fan?3) If I want to use the power pins meant for the original 120mm fan to drive another smaller fan (to pump the oil through the radiator), are there some important requirements the smaller fan needs to fulfill?Any comments from you will be highly appreciated.Best regards,aknnig

### Reply 1:
Sounds good. Keep the miner vertical so a thermal siphon is setup to help move oil over the heat sinks.For radiators & fans, check FrozenCPU or Koolance.com Both have liquid systems that can handle over 2.5kw. With large diameter fans on the radiator (or hung out a window during winter) it should be pretty quite. When using oil make sure it is low viscosity or standard CPU/GPU pumps are not going to be happy.

### Reply 2:
1) No. It need FAN1 connected2) If leaving a fan connected is a simple trick, then yes.3) It has to be a PMW fan i guess.

### Reply 3:
I think this will cause a lot of heath which you cold use only in winter like this maybe

### Reply 4:
He is basically thinking of making a water cooling like system with oil and, well pretty much a ghetto jury rig. It could work fine, although its a lot of work but little gain, it could be fun to do.

### Reply 5:
<link> or you could leave the fans on.

### Reply 6:
Wow I was thinking it would be a quiet setup.

### Reply 7:
I don't know where the sound is coming from, I don't see the radiator fans moving and the fans in the oil probably aren't making all that noise (or any).

### Reply 8:
WTH? What a freakin' idiot...A) Those poor poor miner fans in the tank! The are not made for turning a miner into a jet ski! Yeeesh Go with the miner vertical. Natural thermal convection will move a surprising amount of fluid without needing to thrash it through. Coupled with flow a correct size pump will provide and you are all set.B) Ja it looks like the setup in the vid is using a small car radiator - along with the OEM car radiator fans. Not exactly made to be quiet...

### Reply 9:
I have seen that video before. That is pretty crazy.

### Reply 10:
I dont understand why go thru all the trouble when you can get buy a S5 waterblock and just get it water cooled with a small radiator.

### Reply 11:
Thanks all for the nice <truncated> Agree, very good comment. The original heat sink ribs will prevent an upwards oil flow in the horizontal <truncated> I thought more about putting a resistor there. The question is then what kind of resistor and resistance is most <truncated> Could be. I take this as a scientific experiment

### Reply 12:
I do not know if a resistor would give a RPM reading. I am not knowledgeable enough to tell you how electronically, the PMW reading is sent and received. I'm guessing its a pulse set at a certain frequency. The controller board then interpret to a #RPM based on that.Such hack would be definitively simple to setup, but i dont know if it would work. You will need a fan in there either way so that the oil move through the heatsink, so i would just pick one that will do it without too much noise.

### Reply 13:
mod the wire of the fan then use the fan to cool the radiator. 2 birds with 1 stone.agree with the vertical setup. i'm also considering to make a small project using oil immersion just for the fun of it but a little more proper than the 1 in the video.ideas n suggestions are most welcomed.

### Reply 14:
VirosaGITS: Thanks for the comment. I have started to read myself up on the fans, to find the possible options :-)yslyung: First attempt indicates that just putting the whole s5 into oil does not work. Motherboard seems to demand air-based RPM, which is not possible in oil, for the large stock fan.

### Reply 15:
Few things:Firstly, this will destroy ANY warrenty you have oon the product, so if it damages chips they cannot be replaced. The miners don't tend to run very well without fans,I think that they usually either shutdown, ore make beeping noises. Also, I understand that there may be exposed cabling on the antminers, so uou will have to use a dense oil (possibly higher than petrol's density), otherwise it could combust!

### Reply 16:
Nice a S5 still in the warrenty

### Reply 17:
Yes<rest of thread truncated>
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12042,"Date: 2012-09
Topic: BFGMiner modular FPGA/GPU overclock monitor fanspeed GCN RPC Linux/Windows 2.5.1
### Original post:
NEW VERSION 2.5.1, JULY 13 2012Human readable changelog:Restore BitFORCE driver performanceDon't declare devices SICK if they're just initialising (this is mainly for ModMiner during bitstream upload)Don't count hardware errors during initial ModMiner clock speed detectionBitFORCE FPGA autodetection on WindowsAdded a new average hashrate based on accepted shares (Utility, but in hashes-per-second terms)Include average wait time and ""kernel"" name (either ""full work"" or ""nonce range"") to RPC API for BitFORCE driverFixed compile issues on BSD buildShow progress of ModMiner bitstream uploadImproved hashrate measurement (some hashes weren't counted during longpoll)Various fixes to RPC-based miner.phpFix RPC API on Big Endian rigs (such as routers)Full changelogReplace CPU Algo in header with runtimeBugfix: Calculate diff-1 utility to fix utility-hashrate on pools with diff!=1Add utility hashrate to curses displayShow units in kh, Gh, Th, etc as needed to use at most 3 integer digitsUse FTD2XX.DLL on Windows to autodetect BitFORCE SHA256 <truncated> returns -1 on error now.Check return value of read in BFgetsBugfix: modminer: Count hashes done before work restartBugfix: modminer: Adapt ""<rest of post truncated>

### Reply 1:
FWIW, some statistics after nearly 3 days (BFGMiner 2.5.1):Code:ICA 0: | <truncated> | A:25995 R:177 HW: 0 U: 5.18/mBFL 0: 66.3C | <truncated> | A:57391 R:895 HW: 0 U:11.44/mMMQ 0: | <truncated> | A:36533 R:237 HW:135 U: 7.28/mNote the MMQ 0 only has 3 FPGAs, not 4.

### Reply 2:
I am having problems with running 1 BFL single with BFGMiner. I auto-tuned in Windows and ran BitMinter successfully, so the hardware is working <truncated> git clone <truncated> into <truncated> Counting objects: 9683, done.remote: Compressing objects: 100% (3324/3324), done.remote: Total 9683 (delta 6579), reused 9435 (delta 6348)Receiving objects: 100% (9683/9683), 5.44 MiB | 102 KiB/s, done.Resolving deltas: 100% (6579/6579), <truncated> cd <truncated> ./autogen.sh configure.ac:52: installing <truncated> installing <truncated> installing <truncated> installing <truncated> installing <truncated> installing <truncated> ./configure --disable-opencl <truncated> <truncated> Options Summary: <truncated> FOUND: ncurses <truncated> Disabled <truncated> SDK NOT found, GPU monitoring support DISABLED <truncated> Enabled <truncated> Disabled <truncated> Disabled <truncated> Disabled <truncated> yes CPU Mining...........: <truncated> make (or gmake) <truncated> <truncated> -g -O2 <truncated> -lpthread <truncated> -lcurl <truncated> -lpthread -lm -ludev <truncated> make install (as root if needed, with 'su' or 'sudo') <truncated> <truncated> <truncated> ls <truncated> ls <truncated> ./bfgmi<rest of post truncated>

### Reply 3:
Can you try with --debug and post that output?

### Reply 4:
I would, but I just fixed the problem: running ""sudo usermod -a -G dialout USERNAME"" fixed it. I don't know what this command does, but ostensibly it gives my user account access to this computers virtual serial ports? Thanks for the great software, pool, and overall support for bitcoin, Luke-Jr.

### Reply 5:
Ah, yes. I should add that one to a README once I figure out what all the various distros group it under...

### Reply 6:
Just thought I'd point out Console2 for Windows users who don't like the limitations of Microsoft's command window.

### Reply 7:
After extracting the Windows binaries, AVG detects ""PSW.KeyLogger.AVU"" in pdcurses.dll. Since the functionality of pdcurses is to read keystrokes, this doesn't surprise me terribly, but it is a bit disconcerting. Can this be resolved somehow?

### Reply 8:
Report it to your AVG as a false positive?

### Reply 9:
I have sent it in already... though in my experience they usually don't do much without contact from someone involved in the production or compilation of the software. :/

### Reply 10:
Yeah, that's more or less what I expected.

### Reply 11:
Wonder if you can zip up the source code for just pdcurses.dll and send them in together.

### Reply 12:
Their GUI only seems to allow for detected files to be submitted. It doesn't detect the original ZIP file that I downloaded as containing anything malicious.Maybe if I added the DLL with no compression...

### Reply 13:
The link you sent says contact support. Can you do that and then send them the source so maybe they can send it on for deeper analysis?

### Reply 14:
Actually, on further thought, it is possible that file could be infected (though very unlikely). It is an exception to my general ""compile everything"" policy - I just used their official DLL binary.Anyhow, here's what I sent to AVG:In the meantime, want to see if it detects one I compile myself?<link> pdcurses.dll

### Reply 15:
I still get the virus warning from AVG when I downloaded 2.8.0. But your compiled version didn't have the virus.I uploaded the fil<rest of thread truncated>
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    ""hardware_name"": ""MMQ 0"",
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    ""hardware_name"": ""1 BFL single"",
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14192,"Date: 2011-06
Topic: Question about graphic card power connector
### Original post:
Hello,Today i bought a new hd5850 (EAH5850, the Asus one) and i was planning to add it to my minning rig. I noticed that on my PSU only left one free 6 pin PCIe power connector and some free molex, but the problem/question is: The graphic card needs a 6pin connector and a 8pin connector at the same time, but currently i have one 6pin connector and one molex to 6pin connector, both connectors fit in the card but the second one leave 2 unused ""pins"" that the 8pins connector should provide. I turned on the computer and it went fine, but i'm worried about the 2 free pins.I need to buy the 8 pin connector or i can feel safe with the current config?

### Reply 1:
.... run it at spec, if the card manufacturer decided the card needed 8+6 pins then that is likely the best way to run the card.

### Reply 2:
True, but if you underclock the ram to 300Mhz and undervolt a bit, like I did, I guess it doesn't really matter.If it works, it works...

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    ""hardware_name"": ""6 pin PCIe power connector"",
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    ""hardware_name"": ""molex"",
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    ""hardware_name"": ""8pin connector"",
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17246,"Date: 2012-08
Topic: Unstable hash rate with Radeon 5970
### Original post:
I have a Radeon 5970 in my server that I'm using for mining, but I'm having some issues with it. At first I had problems getting both cores to work, but I seem to have fixed that now. The problem now though is that the hash rate is fluctuating a lot between about 170-350Mhash/s on each core. Shouldn't it be more stable than that? When I try mining with only one core its a lot more stable and stays at around 340-350Mhash/s. The GPU's are at stock-speed(725MHz) and I haven't done any clocking other than underclocking the memory to 500MHz(wont go lower than that in either CCC or MSI Afterburner).Should also mention that I'm using WinXP 32bit, Catalyst 11.10 and Stream SDK 2.1. And I'm using GUIminer with phoenix to mine.Also, I'm currently using these flags:-k phatk VECTORS BFI_INT FASTLOOP=FALSE AGGRESSION=7 worksize=128For some strange reason I get the highest hash rate when I set AGGRESSION to 7, any other number and hash rate drops.Anyone have any idea of what could be the problem?

### Reply 1:
Check you powersupply.But what you are explaining sound more like a temperature problem. Use GPUZ to check what your VRM's temps are... Make sure they dont go over 90c and you should see ""throttling"" stop.

### Reply 2:
I don't think my power supply is the problem. Its a 650W 80+ gold FSP power supply which should be more than sufficient.And I have checked all temps with GPU-Z and nothing is above 90C.

### Reply 3:
i get the highest hash rate at 6 and 7 aggression too, but i don't believe it, so I use 9 insteadit shouldn't fluctuate that much though. @ 6 or 7 i might see jumps from 360 to 390 or something like that. did you try checking temps? it could be throttling itself

### Reply 4:
You shouldnt get more than 340 mhash on a 5970 core @ 725 MHz, even with perfect ram speeds and miner/kernel options. If you're spiking 350-370, definately something awry going on there. Is your GPU activity maintaining 99+%? Doing nothing on the computer running on the miner? I'm running 5830, 5870, 5870, 5970, and 5970 and I get sudden dips of GPU activity (40-70%) if I do ANYTHING on it, and it kind of cascades between the 7 GPU's for about 30 seconds before stabilizing and getting back to 99.5+%

### Reply 5:
My GPU's maintain about 60-75% activity. And yes, its a dedicated mining-server at the momemt, so I'm not doing anything else on it.Tried only running one core again and then the activity goes up to around 96-98%. Strange..

### Reply 6:
What driver/SDK? Back with the old 100% bug if I ran both my cards on the same CPU, their hash rates would suffer.

### Reply 7:
As I wrote in the main post, 11.10 and SDK 2.1. When it comes to the CPU it maintains about a 50% load.

### Reply 8:
You shouldnt even get that much load either. I get 1% CPU on a 7 GPU rig, single core 2GHz. I'm going to bet you have a dual core CPU. You still have CPU bug. 11.12 and 12.1 don't exhibit the CPU bug with 2.1 SDK. Unfortunately, I tried 2.5 SDK a little while back on 11.12 and I had CPU bug. Will take some futzing around to get a 2.5 SDK combo working..

### Reply 9:
Then I'm gonna give 11.12 and/or 12.1 with SDK 2.1 a try. Thanks for the tip. And yes, I do have in fact have a dual core CPU(C2D).

### Reply 10:
Ah I see that now. Must have glossed right over it. Like ssateneth said, 50% of a dual core CPU is 100% on one core, and if you run both instances of Phoenix on the same core, the hash rates suffer. Upgrading to 11.12 will fix your problem.

### Reply 11:
I've tried both 12.1 and 11.12 with SDK 2.1 now and it didn't work... Still 50% load on the CPU and still fluctuating hash rates.. I'm really getting tired of this **** and I'm about to give up... And before you ask, yes I used Driver Sweeper to uninstall the drivers.Maybe I should try a different miner? Highly doubt that'll work either though..

### Reply 12:
Try 12.2 with SDK 2.5. I always used 2.5 on my 5970s with no issues.I'm all for switching to CGMiner, but this sounds more like a kernel issue.

### Reply 13:
As far as I can tell 2.5 isn't available for WinXP. 2.3 seems to be the newest version for XP.

### Reply 14:
Oh man, I am full of fail advice today.

### Reply 15:
Just use 12.1. It's the last ocl driver for xp. Sdk 2.1 or use the one with 12.1. CPU bug should be gone.

### Reply 16:
yeah, 12.1 should be fine.i have 3 5870's in a system w/ phoenix & aggression rating 9, it's about 1-2% per instance (this based on my dual core e6850 that's been underclocked to like 1600mhz and 1 core disabled)

### Reply 17:
I have tried 12.1 and it doesn't help.. It doesn't seem to matter what drivers and SDK I use, both the CPU-bug and fluctuating hash rate remain.. And I've tried many different drivers and SDK's now..Does anyone have any other idea of what could be causing my problems?

### Reply 18:
Uninstall whatever sdk you have. Do a search for opencl.dll and delete them all. Then Reinstall.

### Reply 19:
Drop y<rest of thread truncated>
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    ""hardware_name"": ""650W 80+ gold FSP power supply"",
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  },
  {
    ""hardware_name"": ""5830"",
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  },
  {
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  {
    ""hardware_name"": ""dual core CPU(C2D)"",
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20850,"Date: 2016-01
Topic: Solo mining Bitcoins
### Original post:
HiI am looking to try to setup my 20 Antminer's s7 as solo mining.Is thee any tutorial on how can i do it?What software i will need and configuration and if i need a VPS for this?I know that the easiest way to do it is to use a service like solo.ckpool.org but are any negatives to try set it up on my own?Thank you

### Reply 1:
Hi.You can see this link, for example. <link> Antuam

### Reply 2:
Im not sure about setting up your own server for mining (im sure there's tons of info on the forums here about it), BUT I can vouch for solo.ckpool.org. <link> has 3 different server locations set up for you to connect too depending on where youre mining from. The speed's and stability of those servers are top notch, besides the recent ddos attacks on the US server which I believe CK actually fixed recently the uptime is 100%. Also if you hit a block the fee he takes is minimal at 0.5%.If I were you and I was going to solo mine with 20 s7's I would just point them to solo.ckpool and let em rip!Good luck to you sir!

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9919,"Date: 2016-07
Topic: Antminer S9 : 1 board running hot - worth rearranging?
### Original post:
Antminer S9. I am feeding this thing with a small A/C unit to keep incoming air about 60-65 degrees F.One of the boards is reporting consistently hotter than the others. PCB/Chip temps are 52/85, while the other 2 are running 49/78. Is one board running hot because of its position, or is it worthwhile to rearrange these PCBs?Also like to know how hot is *really* too hot. 80C is the stated limit, but some chips out there can run all the way to 125C without damage.Thanks.

### Reply 1:
One board on each of my four S9's constantly runs hotter (with high HW errors) than the others. It's the 3rd board, but marked Chain 4.All of the S9's I have seen pictures of or have heard talked about seem to have this issue on that board.It is probably a combination of miner body design, chip set / cooling fin placement, and just normal plain-old Bitmain slack-assed-ness for not fixing a problem before it left the factory. I'm sure they were aware of it.But people like me (and others) continue to buy their flawed equipment to keep up with the Joneses.

### Reply 2:
And in how many threads does this have to be asked/answered?? Read a little before asking folks...<link> unless you have free power, odds are that lil' AC unit is eating most/all profits from the miner...

### Reply 3:
I think that there is little value in trying to get a uniform temperature across the 3 blade, give the current tube design. As long as the cool boards aren't too cold, and the hot board isn't too hot, you should probably just get used to a temperature variance. The 3 boards don't all get the same amount of consistent airflow across the heatsinks. Similar yes, but different enough to result in different temperatures.

### Reply 4:
I think he should open up his S9 and re-arrange the boards. If the new arrangement results in chain #4 again running hotter, that should definitely prove the defective BMT engineering.OP, please feel free to re-arrange the boards.

### Reply 5:
Honestly I think there's not much value in doing this. There's tons of reports of ""hot 4th chain"" syndrome. My S9 is the same.It is probably an airflow design failure, but it's also extremely unlikely that Bitmain will take any action, regardless of whether the OP proves the problem or not.Better to live with it and not void his warranty.Maybe it would be more effective to start a poll thread where people who have S9s vote about the hot 4th problem. If enough people vote and it's overwhelmingly evident that the 4th chain is in fact problematic, then maybe, just maybe, Bitmain might notice.

### Reply 6:
The hotter board caused by the lower airflow there is not 'defective engineering'. It was an accepted design choice. Since the boards in that location do work acceptably well then form-factor overrides <truncated> is not only unneeded for most things, it is also usually very expensive to build. Part of Engineering is learning the very gray area between, ""Well, it works"" and ""it works perfectly in all ways"". Most often the final product will fall somewhere between those two points. For consumer goods the roadblock on the path to perfection is usually Marketing ideas of what that (perfection) is and cost.Now if we start seeing failures of that board more often than the others, then you have a case.

### Reply 7:
Hot fun in the summer time!A) op you do not need the make the gear 49/78B) if you turn the ac off you will save quite a bit of power.C) simply down clock the freq from where it is by 50. Ie 600 to 550 The power saved from the ac turned off will make up for the downclock.The temps should be more like 60 /90 With the down clock

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10865,"Date: 2020-01
Topic: Special thread concerning bitmains coupons refunds discounts.
### Original post:
spacer.feel free to post questions and comments.if you post order info or email info please redact your name etc.

### Reply 1:
I will just add this here as some people will not see it in the thread I posted previously:

### Reply 2:
please follow up it is a lot of btc. over $800 worth.did you pay for the order in btc?my s9k order was paid with btc and they promised me btc.i will follow up every monday with an email until it is handled.I will then follow up on my <truncated> on my t17e gear.

### Reply 3:
Appreciated!Same here. It's been over 36 hours since I requested refund. However, there have been 2 full working days in China since then and I expect them to answer during the next 12 hours or I will contact them again.

### Reply 4:
Please edit that post, it's pain to watch it... Here is the image of that I also posted in other thread:I know what the difference is. I already accessed it. Do you need a screenshot or?

### Reply 5:
Pure speculation here, but.... I would imagine the exact amount of refund or credit will not be calculated until your order actually ships. In the event of price fluctuation between now and ship date, I think they'd use the ship date as the cutoff point and determine actual sales price on that date. So, I'm not expecting to do any hard set calculations until I see the item ship.

### Reply 6:
yep this is why I am working on my sept 20th deliveryI had deliveries on11-14 it may be able to get a coupon but not a credit (not sure) since it is currently the lowest price.11-08 it also may be able to get a coupon but not a credit I think the coupon would be 40010-08 it did get a coupon generated for 36810-08 it did get a coupon generated for 68308-08 it owes me a 114 btc refund. ------- I am fighting for this. I am waiting on a late order the t17e order would give me 865 credit-refund it should have shipped on the 10th.I suspect a lot were ordered and bitmain may be delaying them or I am just paranoid.

### Reply 7:
I do not think you fixed it... (FORUM: disabled on this page for security.)It's hardly possible that it can be altered as they sent same mail to everyone about price changes

### Reply 8:
The letter above and replies are in reference to a pair of sk9's ordered back in August. I am due a $114 refund in btcThis is the order in question it is shipped note the rectangles one is shipped one is view

### Reply 9:
Thank you. I am hoping for a few more posters so we can have reference. We can send info from here in an email to bitmain for case support. Ps sent you some merit.

### Reply 10:
Nov 8, 00:19 CSTtwo days later I sent this another follow uptwo days ago no further contact been about 48hrs no refund received yet or follow up.

### Reply 11:
Yes I ordered 3 S17Eone from each batch so it is 850+ 800+ and 750+ USD on all three combinedI am hoping to at least get one refund

### Reply 12:
This stuff is super confusing.My invoices were adjusted, but I am still waiting on shipment.If i want refund (don't care about coupons at the moment since I got a few already), then do I request it (refund) BEFORE shipping or after?I am afraid that after, they would just give me some coupons.BTW, what's a ""credit"" and how you apply ""credit"" to order if you want to.

### Reply 13:
At prpz and favebook you both should be able to access your shipped sales records please screen shot them for info. they should show the difference between what you paid and how you paid and what they say it was worth when it arrived.For the record I ordered another s17 pro today.I have multiple orders arriving from now until Jan 1.At Biodom.. Go to the unshipped order and screenshot it for your records.I will post a screen shot of the s9k order in a few minutes.A credit is not a coupon it is the full amount owed on an ordersee the order that has arrived in house it has a red box on view

### Reply 14:
I been looking at that to, so apparently its after your order shipsI was told this and another member as well however we have one person who was told you don't have to wait for the order to shipCredit is something you can't see on your account and apparently you order with PayPal and pay and let them know they refund you the credit amount via PayPalHow this works and if it actually works I cannot confirm we are still in early stages and there is no clear picture as of yet so we are all comparing what is said and who gets what actuallySubscribedI also have all my emails of what I paid from bitmain webmasterBut this was sent to me as well for reference it was a chart but I can't import it here properly it shows the prices and adjustmentsits hard to read but all info should be there for post Nov 1 order I also have one for Pre nov orders If someone is more skilled msg me your email ill forward the mails with nice chartsNov 8, 2019, 5:06 AM I got thisCode:Product <truncated> Shipping <truncated> PriceUpdated PriceS17 Series<rest of thread truncated>
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9878,"Date: 2016-06
Topic: 10x S9 all showing very slow at the pool
### Original post:
Hi Guys,I just swapped out 6x SP30 for 10x S9 and 2x S7. The S7 are running fine, however, the S9 are all showing <1THs at the pool for some reason. I am mining on ghash.io and slushpool.Does anyone have any suggestions as to what could be causing that?Thanks guys,

### Reply 1:
Can you share the screen shot of the main control panel page immediately after you log in to your S9?Thank you!

### Reply 2:
Hi Guys,Please see the screen shot at the link below.<link>

### Reply 3:
wrong screen shot. and do try a better pool kano.is is known to work well with s-9's

### Reply 4:
Antminer S9 does not work <truncated> on the image The reason is not the S9 speedEven my double S7 working at speed 9,5THs , S9 do not use Cgminer 4.8.0 Instead is BMminer Version 1.0.0Apparently, this is the problem.When Bitmain fix this error ?<link>

### Reply 5:
His picture shows correct reason.S9 do not use Cgminer 4.8.0 Instead is BMminer Version 1.0.0That is the right reason. You can only use some BTC miningpools and not mine any Altcoins.

### Reply 6:
I have now switched to antpool and it is mining OK.The fastest I can currently get out of any S9 is 12-13THs. I have found that with quite a few S9 they only run up to around 7THs at default frequency (650), however, when i turn them down to 625 they come up to 12-13THs.Has anyone else experimented with the frequency? Have you found any particular frequency to produce better results?Thanks guys.

### Reply 7:
By configuration page, Bitmain was referring to the ""Miner Status"" page and the ""Miner configuration pages"".What PSUs are you using?

### Reply 8:
this is the key question. I suspect that the s-9 is a little more demanding then the s-7 is,thus some psu's fall short at freq 650.

### Reply 9:
I am using all Bitmain 1600w PSU.I have found that moving freq down or up doesnt seem to adjust power consumption at the wall very much but it does effect actual hash rate.I have one miner configured at 593 and others at 650. All hashing almost exactly the same rate and consuming almost exactly the same power.

### Reply 10:
I think Antminer increase to 700M newest batchs..

### Reply 11:
how much?

### Reply 12:
This could be up from the pool cause the network connection may be lost

### Reply 13:
its probably because of ""BMminer"" instead of CGminer, I'm unable to mine alt-coins with my s9 nor can i rent it out. getting only hw errors

### Reply 14:
You realize S9 only mines bitcoins (and other few SHA256 coins)? When you say alt-coins, I assume you mean Scrypt and other protocol alt-coins.

### Reply 15:
No, hes speaking of the plethora of other SHA256 based altcoins....

### Reply 16:
BMminer is just a cgminer fork.

### Reply 17:
Looks like I have the same issue with my new Antminer S9-B2 on GHASH-IO. It shows Alive and will GetWork but all work is Rejected. The Accepted on the Miner Status Page stays at zero. The Miner works fine on Eligius and AntPool. If I put GHASH.IO as the primary pool the miner keeps trying to fall back to GHASH.IO and the hash rate is pretty bad on the other pool so it just eats electricity with low earnings.

### Reply 18:
Is the S9 the best one right now? I would like to own some mining gear one day. Like before the banks, Google, etc., start mining.

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23387,"Date: 2021-01
Topic: Recovering Bricked Dragonmint T1 Boards via JTAG?
### Original post:
thanks for the advice. ill check out those threads

### Reply 1:
Check the Braiins thread in the Bitcoin Mining Software area Pretty sure this has been answered there.Also search the Hardware area for ""Halong T1"" or <truncated> the 'mints were made for Halong by Innosilicon you may want to look at threads about that as well as it seems Inno's share much the same design & code.

### Reply 2:
Hey Everyone, I'm new to the site.I'm fairly stumped on a problem that I caused at my site lol. I had some dragonmint T1 miners running that I had loaded braiins-os that caused lots of issues and with discussions with braiins-os I got a script to remove&reinstall the factory firmware from Halong, except it bricked my miners lol. I can't find the units via IP scan but I can find them in the DHCP tables. I've attempted to log in via SSH and it times out and I've also tried via Web which does the same. These are the first batch of T1's without the SD Card Slot as well. I'm getting my options are either replacing the control boards which id rather not do as these are EOL miners and I would like to run them for just a little longer without spending real $$.Does anyone know how to flash or JTAG a bricked board? I do have a couple of control boards that still function with both the factory firmware and the braiins-os.

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16258,"Date: 2022-05
Topic: Negative Pressure and Heat Removal Design- Need Advice
### Original post:
Hello,Trying to come up with a solution to get rid of heat in proper way.Diagram below represents proposed design. HOT aisle will be in the middle of the room with 10"" (inch) intake fan (1200CFM) removing excess heat.<link> to omnitecdesign room by 11'x13'x9' requires 257 CFM for negative pressure. That being said I'm hoping that 1200CFM intake should be enough to do the job.I have two questions that I would love to get assistance with:1)I have ability to reroute one of the HVAC conduits to the mining room and bring cold air. Questions around that. Since this is cold air do I have to run ducking all the way to the floor or let the cold air settle by itself? Additionally, Is there any potential harm for hardware equipment by introduction AC air? 2)There are two exaust windows as an option. One is located 12 FT from the HOT Aisle and second one 37 FT. 2nd window being preferred I wanted to ask if the exhaust distance will have an effect on the performance of the intake fan?Thank you in advance. Any feedback is greatly appreciated!

### Reply 1:
The hot/cold aisle separation will not work with GPU rigs unless you have fans tied to the racks which force the air in the direction you want. You also need some kind of curtain or barrier between the hot & cold areas.Yes, all ventilation fans will perform at lower CFM when static pressure is higher (when the duct is longer). These grow tent fans are designed for high static pressure, so you shouldn't have a problem. The worst type of fan for static pressure are Lasko box fans, where the 2500 CFM rating drops to near zero with even a small amount of airflow constriction.I just recommend buying a grow tent, which will already have holes for ventilation that you can easily connect the ducting to. They already have air filters or they're very easy to install. Place the shelf inside the tent.You won't need to open that little side duct as long as the airflow through the mining room is high enough. I recommend a minimum of 100 CFM per kW. If you use 60A of that 100A panel, which is 14.4 kW, you need 1440 CFM. So your ceiling fan will be enough.

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22165,"Date: 2018-01
Topic: Antminer S9's Hijacked-Need Help-Will Pay $$ To Reset-ASAP
### Original post:
Last night, I powered down my two S9's. When I powered back up, they were configured to point to a viabtc pool. When I tried to change them, I could no longer get it to stick. When I clicked on ""Miner Status"" it would stay on the Configuration page. Both machines. I tried re-installing the firmware, but neither machine would take it. Now I""m stuck, leaving these powered down until I can get the firmwere/software reinstalled. Tried resetting, all that. Nothing helps. Is there a way to reinstall the software or whatever they did to this? I'm working on learning how to SSH into it, but don't what to do once I'm in. I'll be happy to pay a good price if someone can get me back up and running asap. PM me if you can help. Obviously, time is of the essence. Thanks. Dave

### Reply 1:
Did you just get these machines? Were they sold by Bitmain or secondhand/used?You can try installing a new firmware image. Go to <link> and depending in which S9 machine you have, download the firmware. If it's not a static 14TH unit, then download the one at the bottom <truncated> Go to the miner's page under System tab -> Upgrade and under ""Flash new firmware image"" uncheck ""Keep settings"" and select the tar.gz firmware you downloaded.Give it 5-7 minutes and then see if you can enter your pool info.

### Reply 2:
Yes, the first thing I tried. When I install it, after it's done, it returns an error page from the cgi-bin that says ""incorrect firmware"". Tried all versions on the Bitmain site. Apparently, whatever they did, doesn't allow me to overwrite what they put in. The Kernel version is this.. obviously the wrong one. I need to get in there and completely overwrite the firmware. Start from scratch:""Kernel VersionLinux <truncated> #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016""Need to get in there and get it back to factory. Anyone know if I can load it from the SD card and make it work? Again, anyone who knows how to SSH into it and reload the factory firmware (and software?), I'll pay to get it done. Thanks in advance. Dave

### Reply 3:
I assume you can log onto the device? Unless there is a custom firmware installed, you should be able to upgrade the new firmware. And then reset to factory default. If you are not able to do that, then the device has been compromised to a level higher than you can access yourself and you will need to return it, there is nothing else you can do.

### Reply 4:
Ive seen replacement controller boards on Ebay for about $150, that should take care of the problem.

### Reply 5:
What about my first question?

### Reply 6:
No, have had them and running fine for a few months. I have not been able to install any new firmware. Won't take. Tried everything. I can get in there, even got Awesomeminer to say one of them was able to change the pool, but when I go back to the machine, it's still in the same condition, with that Kernel version. Is a new controller board the only option? Bitmain suggested that if none of the reset options work, to create a repair ticket for a new board.

### Reply 7:
So even doing the IP reporter hard factory reset did not bring it back to factory settings?

### Reply 8:
Try the SD card boot<link>

### Reply 9:
Doesn't the S9 have a hardware ""reconfigure to factory default"" button like the S5 had?

### Reply 10:
SD card should do it; if someone had root access on the boxes they could have lobotomized things like the upgrade firmware section. So how did it happen? Are these things on the internet or behind a NAT firewall at your house? If the latter you might have a compromised desktop or something that was used as a jump vector.....

### Reply 11:
I did the IP Reporter hard reset today. It seems to have somewhat fixed the problem temporarily, however neither machine has come back up to full hash rate. I'm giving it 24 hours to see. I think the Kernel Version is still what they left. If someone knows what I should see as the kernel version for the 650 firmware upgrade, please let me know so I can compare. I may also try the SD install, if everything isn't normal in the morning. I see a link above for instructions. Thank you very much for that. I also have to check the firewall settings again. I switched internet service to ATT that same day. Coincidence? New modem/router, so I'm sure it wasn't as strong as it should have been. Here's what happened, so others know what to look for:I powered the machines down to re-configure the AC wires on my rig. When I powered back up, got back to my laptop to check everything was running ok, I noticed that the pools were now set to the viaBTC pools with the user as something strange, maybe something like XX00.S9 or something like that. Don't remember exactly. When I tried to change it back, I entered my pool info, then clicked on ""Miner Status"" tab, but it wouldn't change, stayed on ""Miner <rest of post truncated>

### Reply 12:
If you want to try and ma<rest of thread truncated>
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22753,"Date: 2018-09
Topic: How to setup a small mining farm properly ?
### Original post:
The real answer to your subject question is in a data center with 3 phase power. If you just want a few miners and not a mining farm then a house is okay as long as you like noise and heat or are able to put the miners in a location where both are mitigated.An old house has old wiring and has a good chance of burning down if you arent careful.Before you start looking for answers to questions 1-8, the first question you should ask your power company is what is the cost per kWh. That answer will tell you whether or not to proceed with upgrading the wiring in the house. Also, kWh isnt the only cost on a power bill btw.

### Reply 1:
@Hockeybum, I 'm not worried about 1-5 anymore cause I got all the necessary info I needed. now a few questions left :6. is it ok to have two 1300w ASICs connected to one outlet with a 15A breaker without using a upd ?7. what types of breakers are better for this purpose ? B, C or D ?8. How may I protect my electronic equipment in case of a power failure ?

### Reply 2:
Im sorry but Im not qualified to answer those questions, but there are some on this forum that are. Ill give some of my thoughts and let someone else answer your specific questions, I wouldnt want to be responsible for damaging old wiring or burning down a house.6. How many volts are you running? Im assuming single phase. Continuous load circuits in North America must be derated 80%; not sure where you are mining. Id go lower than 80% with older wiring, but then again I wouldnt run miners long term except in a data center. When I do testing at my house I have a dedicated single phase 30 amp 208 volt circuit (my clothes dryer circuit) which I connect up to 3 S9 miners to, which keeps me under the 80% threshold. Im using a 30 amp PDU and drawing less than 21 amps with 3 miners.7. Im using 3 phase Eaton BR360 breakers at my data center which I believe are type C, not sure for your application.8. Ive found that the cost of a UPS for miners far exceeds the cost of any down time, so I dont run any sort of backup power. Ive been running with high quality equipment and have been down less than 5 minutes over 18 months of mining due to power outages. More of my downtime has to do with inter<rest of post truncated>

### Reply 3:
Thanks for the help,6. like I said power or old wiring is not the issue right now and I'm gonna upgrade them very soon. all I need right now is some technical specifications. and as for the num. 6 I need to know what would happen if you connected your miners to the 30a breaker (keeping the 80% threshold) and without PDU ? the simple question is do I really need to distribute the amp or I can simply go for a simple multi plug socket instead ?7. I'm working on this one but I guess C seems ok.8. I'm talking about protecting against power failure of any kind causing damage to the equipment due to the low or high voltage or outage. I'm not worried about the down time at all. is there any device other than UPS to protect electronic devices ?

### Reply 4:
Updates :7. B: loads with a very small inductive component : - Lighting circuits (non-inductive) - General purpose outlets C: loads with a moderate inductive component, typically electrical equipment which uses low-HP motors or specific types of lighting : - Air conditioners - Residential / Commercial Pumps - Fans - Lighting which uses ballasts with an inductive component D: loads with a very high inductive component, typically found in industrial settings: - Large induction motors or transformers - X-ray equipment - Welding equipment8. UPS or StabilizersFor num 6, I think I'll go for separate breakers for each !

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14454,"Date: 2011-08
Topic: Catalyst 11.7 and 11.8 preview drivers available !!!!
### Original post:
Looks like the Catalyst 11.7 WHQL and 11.8 preview drivers are out.Haven't had the chance to test them yet,but it would be good to know if it increases anyone's Mining rate.

### Reply 1:
Yeah lets know how stable they are, also I heard you dont need to use dummy plugs with these new drivers ? How true is that ?

### Reply 2:
*commits ritual seppuku*

### Reply 3:
Booooo CPU at 100% not cool

### Reply 4:
^Lol,I guess that is why they released the 11.8 drivers.I have to say that I had some problems at first installing for my 6950 but after using driversweeper and driver cleaner to remove any excess driver and ccc profiles I noticed a performance increase from the 11.7 previews of about 1-2 M/hash a sec @ the exact same clocks of 870 core/755 mem. using -v -w128 -f30.

### Reply 5:
11.8 preview fixes the problems of hangs while mining and watching videos.

### Reply 6:
Go into safe mode, disable CCC in msconfig, use dummy plugs, be happy.If that was the answer to your question: Congratulations!If not: Sorry!

### Reply 7:
11.7 WHQL fixes it too, but both 11.7 and 11.8 now trigger max cpu usage in *any* opencl app.

### Reply 8:
I got a blue screen as well during installation of 11.7 from 11.7 preview.

### Reply 9:
This is actually a good thing. Maybe more people will jump on AMD to fix this other than 'just those crazies that are bitcoin mining'.

### Reply 10:
Yay I can finally post in the real forums.Anywho the driver caused my machine to BSOD for some reason... possibly because I didn't bring my clocks back to normal before updating to 11.7

### Reply 11:
What's the recommended prodedure for upgrading again? (I'm on 11.6).Uninstall drivers through windows (or Linux, whatever)Reboot into safe modeRun <truncated> 11.7?I'd like to just be lazy and install 11.7 over the top, but I don't suppose it's worth it Interested to see how these drivers improve performance (or otherwise). Certainly a shame that the 100% cpu bug isn't fixed, but as someone above mentioned, it's good that it's a more widespread problem now. Hopefully in 11.8 hey.

### Reply 12:
Well the CPU bug still exists with 11.8 preview, my CPU (2600k @ 4.7Ghz) is pegged at 14% usage when mining.Curious, using 11.8 preview, does hardware acceleration on flash videos (youtube for example) freeze up while mining still, I don't want my card to freeze up just to test it lol.Also I can't stand youtube's player without hardware acceleration, it scales horribly and makes it look very pixelated unless it's a 1080p video.Seems like I get 1Mh/s more going from 11.7 preview to 11.8 preview lol

### Reply 13:
Hardware accelerated flash works fine with 11.7 for me. Not a single freeze.

### Reply 14:
Gosh the day they actually fix this - we should throw a friggin party! Its there on 11.6 was hoping 11.7/11.8 would be better - I guess sadly not!.

### Reply 15:
I started getting the atikmdag.sys bluescreens as well, but it looks like it's related to something with MSI afterburner.Any time I tweaked any of the clock speeds from the default clock it'd crash. Disable the Unofficial overclocking EULA flags in the config file might have done it as well.Maybe it's a conflict between catalyst control center and MSI, but regardless, that seemed to help me.

### Reply 16:
thats SDK problem, not the driver... try using OpenCL 2.4 and 11.7 or 11.8.

### Reply 17:
So potentially the 11.7 drivers can fix the 100% CPU usage bug on windows. Well they've done a 180 degree turnaround and now the 11.7 driver uses 100% cpu on linux when mining where previously it was perfectly fine. Perhaps it's awaiting the next SDK version (2.5) to work properly, but with SDK 2.4 the CPU usage is sky high. I don't see anywhere obvious to download this alleged sdk2.5 by itself yet.

### Reply 18:
Ah so hardware acceleration is fine on 11.7 and 11.8, but one thing i noticed on flash videos is... I drop from 425Mh/s to 350Mh/s -_-All I need is youtube's player to scale correctly without HW accel., It does on videos that have 1080p, but 720p and under, in full screen, scale like garbage.Maybe there is a thread already for this, or maybe I should make one about it lol

### Reply 19:
I've tried different SDK versions, and 11.6 never gave me 100% cpu usage. 11.7 however ALWAYS gave me 100% cpu usage.It's a driver bug.

### Reply 20:
You mean SDK 2.4 + driver 11.6 = No 100% CPU usage?

### Reply 21:
Nope. That's the combo I have at the moment, and I get the 100% usage bug

### Reply 22:
same, thats what i came from too, and its 100% still there. 11.7 no flash lockups ! finally...had blue screen lockup too and ati tray tools lockups, had to unitstall it then reinstall it and recreate OC profiles in it.

### Reply 23:
(1 core yes)i have started a thread at amd dev forum - opencl section about the 100% cpu usage bug with >1 gpu installed. feel free to jump over there and post your support for this issue being addr<rest of thread truncated>
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22610,"Date: 2018-06
Topic: Overclocking using Airflow into Mining Room?
### Original post:
I have a 10 x 11 room where I have about 27 antminers. I've created a hot/cold aisle using a heavy duty tarp. I have (4) 3,000 cfm gable fans for intake and exhaust. 2 fans on the cold side and 2 on the exhaust side (along with a 450 cfm exhaust fan on the very top of the room for excess heat). I also have (2) 14,000 BTU AC units on the cold side too. Are there downsides to having the (2) 3,000 cfm intake gable fans blowing directly onto miners from about 3-4 feet away? I've noticed the miners perform very well in this setup and temps are good. I'm afraid though that with all the air blowing onto the miner intake fans that it will burn them out or damage them, etc. I basically feel like I'm overclocking them with the air inflow but not sure. Does anyone have any experience or thoughts on this?<link>

### Reply 1:
Bump Anyone?

### Reply 2:
I have seen similar setups and I would say there is no downsides to having those fans blowing straight towards the miner intake fans. Typically I have seen the gable fans all used on the hot side for exhausting hot air, but it should work the way you have it too.

### Reply 3:
You should focus more on removing the heat then pressurizing the intake side with fans. It will pull air through passive vents just fine.Also, why are you running air conditioning? You are using the least efficient AC units possible, those semi portable types. Do they even run on 220? You really need to look into a better cooling solution, AC is not the way to do it.I wouldnt blow intake fans right onto the miners, just because the air turbulence can cause those front fans to die faster than normal.

### Reply 4:
Shouldn't be an issue, static pressure might be the only thing to consider.

### Reply 5:
The only thing I would worry about in this setup is outside debris and corrosion. Do you live in an area with a lot of dust/pollen? Is it humid or near water?

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16564,"Date: 2023-08
Topic: Compass Mining
### Original post:
Does anyone have views on Compass Mining, who host your miners and do all the work? You just pay a monthly hosting fee. CheersMalc

### Reply 1:
I never heard of this compassmining I tried to search and pointed me to compassmining.io is this the site you talking to?If yes then I never heard of this website before some old posts mention this site but almost all posts are made by newbies. So I can't give any insight if they are legit or not.And I checked their website and some guides but it looks like they are not offering a hosting service but selling mining units and hosting it to their hosting partners. We do not know if they have these units physically and it seems a cloud mining.It's too risky to deal with them without the units physically and look at this below just copy and paste it to your browser I just want to link them here. According to the link, you can't send your own miner to their facility unless you buy from them which we don't know if they have these units on hand.Code:<link>

### Reply 2:
You missed my thread last year? Link is in the above post.OP, hosting your miners elsewhere comes with a greate risk, way overprices and you don't actually own the gears, reading any random hosting comtract twice will probably keep you away.

### Reply 3:
They are legit, probably the only big one of its kind that is still running after so much trouble.They made the headlines two years ago when offering their plans to everyone through their IRA<link> one year later for a complete **** with their Russian datacenter<link> issues with Prime Trust, a SEC investigation, legit but always in trouble for something. That being said, legit doesn't mean profitable.<link> make $225 a month, pay at best $175 in monthly fees, so that's $50 a month profit but for an upfront cost of $1300.So 26 months to ROI.

### Reply 4:
A bit late to reply to this, but depending on the number of miners and the power you need if you can't host them yourself you are probably better off finding a local data center and reaching out to them to see if they have anyone who has spare cabinet space who is willing to sublet to you.More and more DCs seem to be looking for the 4 or 5 cabinet and up people who then sublet them out.It's kind of a win - win they deal with fewer but larger users, and people who only need a little rackspace in a DC can get it without having to overpay.-Dave

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13472,"Date: 2016-01
Topic: [ANN] Eloipool - FAST Python3 pool server software - GBT/stratum/dyntarget/proxy
### Original post:
Help withCode:# Network ID for the primary <truncated> = b'\xF9\xBE\xB4\xD9' # testnetis that correct?and another <truncated> (most recent call last):File ""eloipool.py"", line 149, in <module> from merklemaker import merkleMakerFile <truncated> line 448 <truncated> <truncated> <truncated> False)SyntaxError: non-keyword arg after keyword argEdit: Fixed the error, changed some thing in the File.Next <truncated> 12:44:43,877 merkleMaker WARNING <truncated> requested 100 seconds ago, and still not ready. Is your server fast enough to keep up with your configured <truncated> maximum? (doing longpoll merkle roots)2012-11-29 12:44:43,878 merkleMaker WARNING Haven't updated the merkle tree in at least 100 seconds! Is your server fast enough to keep up with your configured work queue minimums? (doing longpoll merkle roots)

### Reply 1:
Yeah, that's what happens when I try to fix a rare edge race condition when I have a fever over 39 C/103 F. Just ignore that top commit for now and I'll fix it when I get better

### Reply 2:
Oh ok just to let you know what I changed:Code: def _makeOne(self, putf, merkleTree, checkBlock, height): MT = <truncated> myblock = self.currentBlock MR = <truncated> height=height) if checkBlock: # Only add it if the block hasn't changed in the meantime, to avoid a race if self.currentBlock != myblock: return else: # Only add it if the height hasn't changed in the meantime, to avoid a race if <truncated> != height: return putf(MR) def makeClear(self): self._doing('clear merkle roots') <truncated> <truncated> False, <truncated> def makeNext(self): <truncated> merkle roots') <truncated> <truncated> False, <truncated> + 1) def makeRegular(self): <truncated> merkle roots') <truncated> <truncated> True, <truncated> the args: <truncated> FalseAre the <truncated> warnings also a failure from you?I search the whole time for the fix

### Reply 3:
No, that was (if it's what I think you're referring to) a bugfix; it wasn't actually doing what it needed to be doing.

### Reply 4:
Ok, keep me updated.Maybe I will use your software for a bitcoin-24.com pool get well soon

### Reply 5:
no fix and this moment, does not work

### Reply 6:
TAiS46,I have it running, and with a couple of Alt coins.You need to completely revert the last commit, That involved taking a section out and putting code back in.I also disabled some of the more extraneous options in the config file and am running it as a basic GBT pool. The GBT long-polls are right on time, and I haven't see any of my rigs complain yet.Luke,I have to admit Luke, I am impressed. After all the crappy and abandoned code that usually involved ancient oddball dependencies I have have spent way to much time on over last few months. Eloipool is a breath of fresh air.I only lost half my hair going through this code. Anyway, Hope you are feeling better and I look forward to further development on Eloipool. I think my next project will be a pool and it looks like it will be based on Eloipool.

### Reply 7:
Hey,I am not the best in git and linux, can you tell me, how to revert the last commit?I have just clone the git from github, but it is very old I think.

### Reply 8:
Eloipool is in Gitorious, not GitHub...To simply pull the top commit off:Code:git reset --hard HEAD^

### Reply 9:
I have been solo mining against an eloipool instance (revision 475de39) for the last few days, using bfgminer 2.9.3 and 'getwork'. eloipool is configured with a ShareTarget set to 0x0000000000fff... to emulate difficulty 256. I wanted to give this setup a shot before trying the newer Stratum protocol. I thought it would be a robust way to mine, using mature code paths (both at the bfgminer side, and at the eloipool side).I was wrong.I solved a block today. I know it because bfgminer currently shows ""Best share: 19.5M"". However eloipool silently ignored the solved block. There goes 25 BTC...Furthermore, it is almost impossible to do a post-mortem analysis. I found out that checkShare() in eloipool.py has buggy logging code, so pretty much no useful information has been logged. Indeed, the checkShare.logger object has a default level of 'WARNING', so logfunc() below will never log INFO and DEBUG messages:Code: logfunc = <truncated> 'info' if blkhashn <= networkTarget else 'debug') logfunc('BLKHASH: %64x' % (blkhashn,)) logfunc(' TARGET: %64x' % <truncated> eloipool silently ignored the block due to an internal bug. Or it crafted an invalid block which was sent to my bitcoind, who in <rest of post truncated>

### Reply 10:
I doubt Eloipool was the problem in this case. The ""best share"" code is much newer, and there have been reports of similar behaviour from altcoin solo mining; unfortunately, I don't know any good way to reproduce it. Did you happen to be running BFGMiner with a debug log by any chance? There might be some useful info in there...Eloipool's code only conf<rest of thread truncated>
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24114,"Date: 2023-04
Topic: Management/maintenance in mining.
### Original post:
Recently I took a shallow review on most of the posts concerning mining/miners relating to profit making based on low fee electricity charges and location. And for most, no body is talking about ""good <truncated> as another hidden means to keep ROI flowing for as long as possible. Not that I don't agree that electricity charges consumes much of the supposed profits miners expects to make from mining based on the expenses that they have ran into in getting every equipments needed for mining.But I observed there's a way also miners can make profit but on a longer time, that's progressive to cover up on all expenses made and more through good management of the available <truncated> A better management of your equipments ensures a longer time frame usage and the more the years goes by the same the profit follows. I have heard people say ""wow I can't believe this machine has given me so much profit over the years than I could have ever imagined"", such statement as expressed is connected to good management and maintenance over the years and nothing more or less.In conclusion what am saying is that there's a key role good <truncated> plays in terms of profit making for miners as it is wit<rest of post truncated>

### Reply 1:
Ha? good management only ensures smooth operations and low downtime, it doesn't magically increase your profitability, if electricity price vs management were to have scores over 10, it would be 8/10 for electricity rate vs 2/10 for management, you can't say those two are of the same importance, give someone who has a mediocre management skills 1MW at 2 cents kWh, and give someone with 50 years of management the same 1MW for 6 cents, the former will make you more money.Of course, there is a thin line difference between not-so-perfect and totally useless management.

### Reply 2:
Bad management can fuck up a lot.but adequate management and great circumstances can do well enough.Great management and great circumstances will do more than adequate.Here is an example of piss poor management SVB bankBet on interest rates Dec 2021 they purchased a huge amount of bonds paying 1.5%Rates went higher and higher and higher all of 2022 and so far 2023so 40 billon bond paying 1.5% drops to 36 billion in value as compared to a 40 billion bond paying 4.5%they had all of 2022 to bail and not get crushed by the bad bet they made in dec 2021 they kept hoping for a pivot to lower rates they never got it and busted outpoor management crushed a bank with over 200 billion in total assets.Time layering of bond investments Ie don't do all 40 billion you have on one purchase on one date.If they simply did 4 billion a month for 10 months in a row then sold the worst one and purchased a better one they would have been fine.

### Reply 3:
Sure thing, it's not even up for debate, but this is what's written in the OPSo my question is, how would better management magically makes your mining gears generate more profit? it just seem like he is trying to sell a product of some kind.

### Reply 4:
Good management can basically only ensure that you get the profit that you are supposed to get. If you have bad management you will have downtimes etc. which will decrease your profit. What the OP describes really does sound a lot like advertising, because obviously your machines will only run at the adverstised hashrate. He is still right that they can only remain at that hashrate if they are take care of. Would be interesting to see some calculations if some kind of management will really give you a quicker ROI.

### Reply 5:
Exactly how it works, which is how some illegal farms in some countries where they steal power in some remote place, drop a container, and never revisit-it again, leave it there till the police find it, still making some good profit, on other hand, some perfect management that runs a legal farm in EU where the power rate is 20 cents per kWh will not be making any profit.

### Reply 6:
Is this really happening with the power theft?I quickly calculated the profits of for example an S9 and the profit would be around 1 USD per day. So if you buy the S9 for 50 USD from China (current price for bulk) you could make a profit is you can have the miner sit for 2-3 month. Its illegal and obviously such illegal stuff hurts bitcoin, but actually could work.

### Reply 7:
It is, I have seen it before, they go for the lowest dollar/th mining gears, and those usually ROI in 2-3 months, with the cabling and whatnot, they would be looking at 4-5 months ROI, it's a hit and run, they would deploy a few small farms here and there and hope for the best. When 4-5 months have passed anything that was not captured by the police will be running at 100% profit.The funny thing is the government would sell those confiscated gears on auction and guess who would buy gears that don't make any profit if the power bill is paid? Of course, this illegal probably everywhere<rest of thread truncated>
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9957,"Date: 2016-08
Topic: How low can it run? What's it? the batch 10  S-9
### Original post:
Okay you have an apartment power is included. Or you have any space in the world where 'power is free'.How low does the s-9 go? Well the advanced setting will allow for a setting of freq 100 well thats too low.But if you set it at freq 375 and a fan of 22% you get good resultsthe sound level at 22% is very good but it is a little hot with freq 375I want the sound level that 22% fan setting gives so I dropped freq to 350So this is close to the practical limit of down clock

### Reply 1:
So what is the big deal of a down clock to 7500gh?

### Reply 2:
Hmm, now if we can just get Sidehack to come up with some Vcore data so they can be under-volted as well...

### Reply 3:
My spacer above asks a good question. Well this setting is quiet not silent but quiet. Good for the dorm room good for an office space heater if the office is not quiet.This setting pulls under 825 watts at the wall. means you can use this miner with small 120 volt psu's.I know it does not seem like it but Fall will be here soon and many people use a miner to space heat. so lets say you go for 1450-1500 for the lessor model. this should pay off with free power and 2% jumps in a year.not quite what someone may want. So rather then freq of 350 and fan of 23%A setting of freq 375 and a fan of 25% ora freq of 400 and a fan of 30% ------- starts to be loudit may be what works for a free power miner needing quiet mining is a bit more testing.setting below is freq 375 and fan of 30% and it is getting louderfreq 400 fan 33% and the sound would be too loud or loud enough to annoyfreq 404 fan 33% the hash rate and temps moved a bit higher and of course the sound is too high. my psu is a 1000 watt plat enermax single railfreq 406 fan 33% the hash rate moved up temps are about the same. This 406 33% setting may be a good for my unit. my psu should hang in until I go to freq 500 ( a guess)next <rest of post truncated>

### Reply 4:
be nice to see thatnext is 418 and a fan bump to 35%420 and a bump in fan to 36%I am now at 9000 gh + good temps and the sound is loud in the sense you want it in another room but once you have it in the room with a closed door and an open window things are good.425 kept fan at 36% remember I am using a 1000 watt psu and so far it is doing the job.next up is freq 429 and will stick with fan at 36% when weather gets colder these will get better. My mining spot/room in the house is 83f

### Reply 5:
So Phil is this the psu?<link> review is okay.<link>

### Reply 6:
Looking mighty good there! Give a few more months for temps and pricing to drop and methinks I see one upstairs for the winter Get some under volting programming data for these so the fans can be ran even slower/quieter and I see a few more spread around in our offices as well...

### Reply 7:
I have limits with this psu.but it ran freq 433 at 37% with good numbers.If these can under volt like the s-7 a fan speed of 23% is okay sound wise so if undervolt allows for freq 400 and fan of 20-23% this would be a very good miner for space heating your office.

### Reply 8:
And as noted in the main s9 one board up and died.Happened when I went to freq 525. Which I did when I moved it to the solar array.So we now have 5 and s's and 1 s7 running we could add two more s9's as the circuits are 20 amp 2403 run at about 15-16 ampsso we can max at nine units.I will post either warranty process on the dead s9 board or I will send it to sidehack to play with.Here are 2 good boards with light and the one dark board.Which died after running at freq 525 for under a few hoursSomewere some place I have a spare 18 pin cable maybe it can fix issues. But with tests that I did I think the board is dead.

### Reply 9:
So Phil what will you do? Are you going to contact bitmainwarranty in the USA?

### Reply 10:
I sent this email today. Notice I said I wanted to avoid shipping to China and that I am willing to forgo the warranty for an s9 board at a fair price.

### Reply 11:
So Phil I found this post of yours: filled with quotes it is like you knew you were going to get burned:

### Reply 12:
Wouldn't it be better to just buy a used S7 and undervolt? The effiency will be 0.20 instead of 0.10 but it will be much cheaper and just as quiet.I might look into this once all my 280x start using more power mining ETH than mining Bitcoins.

### Reply 13:
I actually had the same thing happen to me with a batch 1 s9. left for work all was fine.. came home to find a dead board.a month later i finally have it back from warranty replacement. not happen on the turn around time but at least i only had to pay for shipping one way, and 0 to fix the board.

### Reply 14:
So is the answer 10 hours? Man that's frustrating, sorry Phil. I hope they sort you out in a reasonable timeframe, though I naturally have my doubts.I agree with what someone else said, wouldn't you be better off <truncated> an S7 to try to increase the hashra<rest of thread truncated>
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13848,"Date: 2011-02
Topic: Mining poll
### Original post:
So, how do you mine?

### Reply 1:
I've got my 6-year old Windows desktop sitting here that I rarely use for anything anymore, so it mostly just acts as a print server, file storage, Zumocast server, and now a Bitcoin miner with low priority. As it's ancient, I only get 700 khash/s, but I'm not paying for the electricity so it's essentially free money.I've also got my laptop here that I use for work/play, and I'll switch on a GPU or CPU miner if I'm not doing anything with it at the moment, but only one thread so I don't prematurely cook the CPU to death. In all honesty with the latest difficulty change, I'm probably going to stop mining on the laptop entirely once I get my next payout.

### Reply 2:
I mine on the Linux box that I use for everything else too.I bought a 5870 for it (322 MHash/sec) which purrs away quietly and is trouble-free, except for the need to reinstall the ATI driver every time I update the Linux kernel.I also tried mining on my N900 phone just for the fun of it (130 kHash/sec) but of course I never won a block.

### Reply 3:
Your phone is 1/2 the hash rate of one computer I routinely use. That's both amazing (for you) and sad (for me).

### Reply 4:
At the current difficulty, my phone should generate one block every 58 years. That's amazing, but not amazing enough!

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    ""hardware_name"": ""N900 phone"",
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16995,"Date: 2011-12
Topic: Miner keeps getting stuck on ""Long poll""
### Original post:
So I had a dedicating mining machine with a single 5850 in it that was recently repurposed as a desktop for my wife. Ever since then, I've been having trouble keeping the miner running. Using guiminer, and usually after 10-15 hours of running, it'll stop mining. When I get back to it to reset it, in the status bar at the bottom, it'll say ""Long poll: New block 00000x4930"" or something like that. Can't remember the exact text off the top of my head.What could the problem be?

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3937,"Date: 2016-12
Topic: 300x Avalon 6 group buy
### Original post:
Hi All, on the goods forum there is a topic of yxt selling approx 300 Avalons A6 <link> he doesn't want to sell individually, I was thinking of organizing a group buy.First I want to see if there is enough interest to negotiate a good price. I have made a google form to check the interest, please view it here: <link> does this work?a group buy with a variable price is quite difficult, so here is the idea. People give their interest at a certain price point. After that a calculation is made (by me) what the total revenue is, when the top 300 offers are included. These people get a offer with their price/quantity so that the whole lot is bought. A simple examplelets say there are 10 units available. A offers 2@220, 5@210 and 10@200B offers 2@230, 6@220 and 10@205B will get 6 units @220 and A will get 4 units @210NotesPlease fill in the cumulatieve interest, If you want 10 for 220, or 15 for 210, please fill in 10 and 15 in the fieldsPrices excluding shipping, see postnl.nl or deutschepost.de for shipping ratesPrices exclude the Raspberry to control the minersPSU's are not included. I might be able to fix 90%+ PSU if the quantity is rightThe global planningCheck intrestNegotiate price<rest of post truncated>

### Reply 1:
they should cost 100USD max to be interesting purchase

### Reply 2:
Not going to happen. Way too cheap.

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13505,"Date: 2016-05
Topic: Bitminter client (Windows/Linux/Mac) URGENT !!!!!
### Original post:
HELLO Everybody, this is very Urgent to me!I need your Help !!! After made download of last Bitminter app: ""Latest Auto Update"" (Tools), I'm not mining with it because it show's me always the same Errors: 2016.05.02 [13:25] No devices to start! Please connect mining hardware to USB port(s) and use devices menu to probe for them. 2016.05.02 [13:25] Uncaught exception in thread AWT-EventQueue-2 <truncated> 2016.05.02 [13:25] Probing port 3333 2016.05.02 [13:25] No such port ""3333"" 2016.05.02 [13:25] Probing port 3334 2016.05.02 [13:25] No such port ""3334"" ... and when I Click on the Button (red/green): Control ENGINE START it appears this: 2016.05.02 [14:15] Uncaught exception in thread AWT-EventQueue-2 <truncated> ... I just tried several ""ports"", to change Settings, Options ... but I don't understand nothing about Devices and Ports ??Please I need so much of your Help and Soon as possible !!I will wait and Thanks a Lot!!!! THANKS A LOT

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16920,"Date: 2011-08
Topic: Help please...I'm a newb when it comes to mining
### Original post:
Would it be worth it to mine with a cheap laptop? How exactly does it all work? How much electricity would it take up? And is it worth it?

### Reply 1:
I assume when you say a cheap laptop you mean a laptop with onboard graphics. If thats the case you will probably only be able to cpu mine. If thats the case cpu mining costs more electricity then will give you profit.I know you didn't ask for the information coming up but I thought I would be very thorough since you said you were a newb and you may ask these questions in the near future anyway.If you really want to make a profit off mining I recommend buying a graphics card and throwing it into a desktop you already own or building a desktop from scratch. When it comes it comes to picking a card you want to pick a 5770, 5830, 5850, 5870, or a 6770. Price is very important though. Here is my recommendations for price points for each card.For the 5770 and 6770 (exactly the same card with different name) the absolute most you want to pay is 110 and thats pushing it. I personally would be a buyer at around 90.For the 5830 pay no more then 130.For the 5850 pay no more then 160-170For the 5870 pay no more then 200.I'd also like to point out sapphire seems to be one of the top brands so if you can snag a sapphire you will most likely get the most megahash out of your card.

### Reply 2:
Thanks, I just didn't know if anyone could mine without advanced graphics cards, like buying a new one. Thanks.

### Reply 3:
Would it be worth it to mine with a cheap laptop?Generally Laptop mining is not worth the stress (heat) that the video card. Even some of the best laptop gpus ($1500+) only get 20 - 40 mhash compared to a $300 cheapo computer with a 5770 with 200 mhash.How exactly does it all work?in short:Install the latest ATI driver package 11.7 or aboveinstall the SDK 2.1 or 2.4 with opgenCLdownload a bitcoin miner (for windows guimminer is easiest)decide whether you want to solo mine or pool mine. (Pooled mining is prob the best solution here)create an account with a pool miner operator. (BTC guild, slush's pool, deepbit...)start mining How much electricity would it take up?depends on the power supply and video card solutionAnd is it worth it?It depends. if your goal is to make money then you need a desktop platform.here is list of hardware <link> is a list of builds <link>

### Reply 4:
Yea any one can mine with a cpu. The gpu requires opencl support or it wont be able to mine. Onboard graphics tend to be very crappy so I assume most would not have this support. If the laptop had a dedicated graphics card then maybe depending on what it is.

### Reply 5:
As stated above the stress you would put on your laptop from heat would far outweigh any potential profit you might manage.

### Reply 6:
Not worth to mine unless you have at least 0.5-1.0 Ghash/s, I have 3 oc/d gpus, 0.925 ghash/s in total and it's becoming less and less profitable...

### Reply 7:
Unless the price / value of BTC rises significantly, again... :-)

### Reply 8:
It will costs you around 54 cents a day to run it and you'll generate about .006 btc a day.In order to break even you need it to be worth 90 dollars a btc and lets be honest if it reaches $30 the difficulty will sky rocket again so there is no profit to be had with cpu's.

### Reply 9:
Thought you meant mining in general.Does anyone who mines use solar power? How about bio-diesel generators?

### Reply 10:
Might be a good idea to start a new thread with this one. Green mining now that's a concept

### Reply 11:
I can't be the first one to have thought about it...I'm toying with the idea of saving up for solar panels or figuring out how to rig up a biodiesel generator anyway, the power bill is becoming outrageous for our house.Also, I saw a thing on CSPAN last night about the likelihood of a full-scale EMP attack against the US by 2013 being at 99% probability (don't ask me who or what came up with that figure; i was using CSPAN as I always do -- to fall asleep) but anyway, they were also talking about how easy it would be to prevent damage from one -- basically build some sort of metal shield over your transformers. Or the power company's or whatever. I'd rather it be my own :-)Then I thought about how revolutionary the idea of digital crypto-currency is, and how important it might be to protect the integrity of such a system from ""the very real threat of EMPs""...Perhaps I should start a new thread or three.

### Reply 12:
Not worth it. No.

### Reply 13:
EMP bombs aren't a myth.... but for a country to attack America with one, they would have to build it IN the US, because the finished project (to have any sort of actual range) would have to weigh several million tons and would likely take up several aircraft carriers (of the military type, not for your two seater planes)

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22908,"Date: 2019-04
Topic: Inverting fans in S15, will it burn?
### Original post:
run it on lower power setting normal fan position with no ducts check temps and fan speed do it for a hour or morerun it on lower power setting with inverted fans and ducts check temps MY guess is it will work for sure on lower setting. do it for an hour or moreif it works on low setting and temps/fans hardly changed upward then try higher setting. My guess is it may not work on higher setting.

### Reply 1:
Hmm sucking air vs pushing air, which one would keep the boards more cool with the least amount of noise? This is an interesting experiment i'd like to know the results, for science of course You know in the other side without fans, there is a grill you can take off?I believe the S11, S15/T15 and S17 will all share the same physical size, someone will build things for them.

### Reply 2:
Honestly, I wouldn't expect better cooling. Mainly if the fans could cool the chips better with that configuration the machine would have been built that way. Efficiency is the name of the game, and a better cooling design would reduce the work required by the fans, directly contributing to the machines overall efficiency numbers.I also think that this setup is best unless Bitmain machined new heatsinks similar to what Canaan has had in the past. Pushing the air into the machine and creating that pressure build up through resistance to air flow and heat, pays off on the exhaust side. The air picks up velocity as it leaves the machine back to ambient room pressure.In the end though, it's your machine and if you want to experiment, go at it slow like Phil suggested.

### Reply 3:
If he inverts there is a push fan he can add.I would need to find the link.Bitfenix 200mm fan at Newegg can push 148 cfm on the grill side.And you can invert the two two stock fans as pull. It would glow purple led and on low setting I think it would be fairly quiet.I have cheated with weaker push fans like this on the s7ln as it is not a hot machine.But I still think only on low power.The s15 on low setting is well under 1000 watts. In fact close to 920 watts. It is pretty easy to cool.I know I have one running as I type.

### Reply 4:
I got a few S15s yesterday and I was wondering how to attach 3d printed duct adapters, like the ones used in S9s.I have not come across to any 3D designs yet, since it's a relatively new (and not very popular / too expensive) model I guess, so I was thinking of inverting the two fans, so that they suck and exhaust the heat from inside the miner, instead of pushing the air through the chips. Am I crazy? Probably yes, and that's the main reason I'm here since I'm not an engineer of any kind and I don't want to burn it I'm afraid that the fans are not designed to suck the air, but to create air pressure to push the air. Just wanted to know your opinion and confirm my bad bad idea. Thanks!

### Reply 5:
Boards having higher fan than the rest is normal, it has almost nothing with how they are placed, every hashing board performes differently, i tried re-positioning some boards on many gears, it never worked.As far as what you are trying to do, you can pretty much make the 3d duct design your self, a rectangular to round shape converter will work just fine.

### Reply 6:
So running 3 fans instead of 2 with 1 pushing and 2 pulling? Is the push fan mounted directly on the miner, or is the intake ducted with an inline fan? I've just never run/seen this setup before.If it is 3 fans directly on the miner, would there be an issue with uneven heat distribution, or would the fan cover the entire intake side? I'm just guessing there is another slot on the control board for a fan?Whatever the configuration it would be interesting to see if there would be any power savings to be had by 3 fans running slower than 2 full out, or enough cooling to run in hotter climates.Edit: Saw the fan you are talking about. I wonder if some hot spots not in the path of the push fan would form?

### Reply 7:
If you attach it to the grill as a push it needs a 1/2 inch nylon spacer. It is a 200mm fan 1 inch thick.It does not use much power. It will not fully cover the grill this is why you need the 1/2 inch nylon spacers.The grill is a rectangle and only two holes in the fan mount get used on a diagonal.I have a fan I will photo what I mean. Tomorrow morning.

### Reply 8:
In my situation, since everyone has different setups and needs, I don't really care much about noise. And yes I can remove the grill, but still would need something to attach there so I can connect the ducts. About the same size, the metal enclosure that house the hash board has the same size, BUT I'm noticing few differences in the grill design and screws position for example between the last batch of S15 and the older one (attached pic, new batch is on top). Not sure if there is any difference between S11/T15 and S15.<link> main issue I'm trying to solve is that right now I'm unable to properly remove th<rest of thread truncated>
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11535,"Date: 2011-07
Topic: Does a node need to be connected to the Internet to generate blocks?
### Original post:
It would make common sense that it would, but you never know. Is there a way to download the current list of blocks into a client and have a PU run offline until it figures out a new block then check to see if that block was made by the rest of the world first? Or is this a 'Perma internet connection' skill.?

### Reply 1:
Fair enough lol, just curious if it was possible

### Reply 2:
which can take weeks or longermeanwhile the bitcoin network found it in 10 minutes or less, on average.

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20912,"Date: 2016-02
Topic: Antminer S5 - Underclock - Undervolt - Best J/GH
### Original post:
Not what has been reported so far, but my first tests show that reducing the Supply Voltage to an S5 does work.....Have just taken delivery of a 2nd hand S5 and after some quick initial checks that everything was ok had a quick go at dropping the volts.First, very early impression, is that things work as expected...Tested at 125MHz with 9.0V at the connectors. (Not wanting to tell people how to suck eggs, but perhaps those that are bragging about how much current they can push through a Molex connector, you need to measure the voltage that is actually getting to the board)Only measured over a 30 Minute period the Hash was 440GH/s (a bit lower than expected, should be 470GH/s . Over the short time the rate was fluctuating quite a lot and needs further <truncated> from the supply (not the wall) was 12.1 Amps so 109 WattsSo that gives 109/440 = J/GH 0.248 SmileyNo xxx, HW error a bit higher than I would like to see @ 0.05%Boots up and starts hashing at 9V, although to be fair it's 10V with no load because of the rubbish leads I am using on the adjustable PSU.So a lot more tests to run but a better than expected start. Is it my S5, am I lucky, am I doing something wrong? Time and more <rest of post truncated>

### Reply 1:
How did you go about reducing the voltage?

### Reply 2:
I have tried a couple of Software reboots and a complete power down and restart at 9V and everything was fine, have not tried starting with the miner completely cold.As I was not going to have to listen to the noise I adjusted the Supply voltage and clock up a bit for an overnight run. Ran for 8 Hours with 7 HW Errors. Here were the settings.Frequency 225MHzSupply Voltage 10.6VCurrent from Supply 24.5APower 260WAverage Hash 735GH/s0.353 J/GHSo again about right looking at the BM1384 data sheet.Will make some more measurements Today, but need also to set to on seeing if I can adjust a Server PSU to a lower voltage? Rich

### Reply 3:
Have done a lot more measurements at different frequencies & voltages and have got to say that testing an S5 on the bench at the higher frequencies is horrendous and has being doing my head in...However at the lower frequencies it's quite bearable. 150MHz, 9.5V, Fan 1920rpm & 32 Deg. Interesting to compare it to a typical overclocked S3 @ 0.5THCode: MHz W GH J/GHS3 237 394 500 0.788S5 150 143 500 0.285Rich

### Reply 4:
If you're interested, I wrote some programs to specifically do power monitoring and tests on the S5 - one program does realtime logging to a CSV file from the Watts Up Pro Meter (1s resolution), the other one runs the S5 through all the clock speeds, from the lowest all the way up to 450, at each clock speed it runs for 15 minutes to let it stabilize. I have one more app that connects to CGMiner and logs all of it's data (5s resolution), so you can see all of the characteristics and what they do. The full test takes about 12 hours to run on a machine, but my objective was to be able to build machine profiles, and see what kind of variation I had among my S5's.Lately I've been focused on the A2's, so haven't given the S5's as much TLC as I normally do...

### Reply 5:
Monitoring software sounds great, could save a lot of time listening to the S5... Just need an extension to cope with varying the supply voltage. Rich

### Reply 6:
How do you want to interact with it? Right now it's part of a larger program I'm writing, but I could easily make a commandline one that you'd just specify the IP/port and it would just start logging - does that work for you? It's Windows-based also, FWIW.

### Reply 7:
Thanks for the offer but at the moment I do not have a PSU that is programmable for voltage. If I can come up with something it would be a nice idea. However I would like to try your logging program as would definitely help in the testing and measuring I am doing at the moment.Rich

### Reply 8:
Have you seen this:<link> be worth hacking together to give you some more flexibility...

### Reply 9:
HiThanks for the links. I have a 40A variable, 5 to 15V PSU which is fine for testing except that I have to twiddle a knob. However this PSU is not efficient enough for Mining so I need to set to and see how much I can vary the voltage on one of the Server PSU's that I have. I think they are by far the best value for money, performance & relaibility you can get. If I can do that with a variable resistor somewhere than that can be replaced with a Digital Pot controlled by an Arduino and we then have programmable voltage. Just need to find the time in amongst all the other things i am trying to do...Rich

### Reply 10:
I've made a commandline program (Windows, 64bit) to do the logging for you - you can grab it here:<link> usage is pretty <truncated> /ip 192.168.3.226 /device ""Antminer S5"" /file ""log.csv"" /verboseFor /device you can specify either ""Antminer S5"" or ""A2 Mega"", since those are the only two types of miners I have<rest of thread truncated>
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22989,"Date: 2019-06
Topic: Avalon 741s
### Original post:
I have some Avalon 741s.Anybody know if there is any open source firmware for higher efficiency modes? (frequency/voltage tuning). Seems like Cannon has abandoned them, latest firmware 2017.I know about the voltage offset option, but does seem to achieve much better efficiency. It would be nice if they had something like the 8 series have.Its disappointing Cannon haven't continued to develop the firmware. I'm still getting firmware and efficiency upgrades for My 3 year old S9s. I guess they make a good doorstop stop now...

### Reply 1:
No matter what you do the A741's will not achieve much better efficiency at reasonable speed. The chips just cannot do it.That said, the Avalons are high tweakable to get better eff by playing with the voltage, voltage-offset, and freq. Just don't expect any major gains. Folks have already played with those so search for the main Avalon 741 review thread in the Forum to see what they did.For the most part these days the A7's are really only good as heaters during cold months...The only reason the s9's are running better today is because BM originally crippled them via their firmware whereas Canaan has always shipped miners with the best tested firmware at the time.

### Reply 2:
Thanks,I'm not to worried about getting good TH, just reduce the high power consumption and noise. Would be nice if i can run them silently on standard 120V plug. Better than sitting in a box in my basement. Cant even give these away, even with the recent price hike. Where the S9s I can still sell for a decent price. I regret buying these, even though they have ROI'd. I would of been in much better position if i got S9s instead of the Avalons 2 years ago.

### Reply 3:
Here the best I got from a 741 that I used to use as a heater in my TV room. The PSU fan is louder than the miner.Something to keep in mind is that BM's hash board failure rate is fairly high. For those with many miners it is not uncommon to see a 10-15% failure rate often in less than a year or so. I used to run 16 s9/T9's ranging from batch-1 up to batch 25 (around 3 years ago) and every single one had at least 1 board fail. For the most part Avalons run forever with very few hardware failures reported here in the Forum. I currently run 21 Avalons, most are 841's and 2x 921's. To date only 1 failure and that was a PMU board on a 821

### Reply 4:
Perfect,@ 750w, you can probably even put 2 on one 120v, 15A circuit. Exactly what I was looking for.Thanks, ill have to play around with it.I've had fairly good luck with the S9s, running 6 of them, but probably because a got them used, and they have already been proven reliable by the previous owners. I heard if they fail, it happens fairly early in their lifespan.

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    ""hardware_name"": ""841's"",
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    ""hardware_name"": ""921's"",
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    ""hardware_name"": ""821"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""s9/T9's"",
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]"
12133,"Date: 2012-12
Topic: CGMINER GPU FPGA overc monit fanspd RPC stratum linux/windws/osx/mip/r-pi 2.10.0
### Original post:
On the new version 2.10.0 My BFL boxes all are showing the same MHash rates, but all my 7970's have gone from 680Mhash to 603MHash. Any thoughts?

### Reply 1:
cut/paste ...2.10.0An Xubuntu 11.04 x86_64 executable is in my github downloads called <truncated> also works on Fedora 16 and 17)For anyone who didn't realise, it's just the executable file to put in place of 'cgminer'Nothing else needs changingFirst get and extract the full binary release from ckolivas and then copy my file in place of 'cgminer'No problems so far on my GPU or 'BFL+2xICA'Since I'm no longer GPU mining, I just run it for a while on my single 6950 to see what happensBFL+ICAs (1.6GH/s) on OzCoin Stratum with fixed 8 diff(MMQ is ... still ... doing new code testing)The same configure options as cvolivas' binary versionIn case anyone was <truncated> -W -Wall"" ./autogen.sh --enable-icarus --enable-bitforce --enable-ztex --enable-modminer --enable-scryptmake cleanmake

### Reply 2:
2.10.0 exe file for GPU only (scrypt enabled) on my skydrive if any1 intrested

### Reply 3:
Is there a compiled version of CGminer for windows with icarus, bitforce, ztex, and modminer support.

### Reply 4:
Yeah the files at the download link called cgminer*win32.7z or cgminer*win32.zip

### Reply 5:
My 7970s are performing exactly the same with 2.10 as with 2.9. Coincidence related to some other problem for you perhaps?

### Reply 6:
My 7970 lightning with 2.10 have the same (690 Mh/s) rates as 2.9.7

### Reply 7:
question on how cgminer figures intensity.on dynamic with both 2.9.7.0/1 and 2.10.0 when I fire up folding@home on the cpu (which loads the 4 cores to 100%) cgminer drops intensity down to -8 or so on my 6870. stop folding and intensity goes to 4 or 5 where it should be. dunno if previous versions of cgminer do this as I just upgraded to an i5 3570k; I didnt fold on the other CPU.AFAIK folding does not touch the GPU in any way when not displaying folding graphics (which i never do) and it runs @ idle priority.does cgminer figure CPU load into dynamic intensity? win7 64 bitcgminer 2.10.011.11 driver12.4 SDKHD6870anyhow, setting ""I"" manually is fine. and I LOVE the stratum support! dunno how you do it but cgminer just keeps getting better!

### Reply 8:
cgminer times how long it takes for the gpu code to ""return"" after it's been given work. Unfortunately with windows, the timer resolution is so shithouse at 15ms that I have to sample many many iterations of the GPU code and then average them to see how long it took. This means that between giving the GPU code, there are short periods dependent on CPU code, and windows' scheduler does not seem to give this CPU code priority even though folding@home should be idle priority. So it ends up counting delays of the CPU scheduling as though the GPU had spent more time on its work. So it's a combination of the shit windows timer resolution and the shit windows scheduling that makes dynamic not work that well for your test case.Thanks

### Reply 9:
I figured it out. Drivers! They crashed when i first started CGMiner for some reason, so I had to reset all the clocks. Thanks for the replies.

### Reply 10:
No prob. I can live with it, just curious. so, best senario: linux! 'cept the gaming part, which keeps me in windows. ah well..youre welcome. donation coming your way, check your PM. make sure it goes onto the stratum side of the scoreboard if youre still keeping count

### Reply 11:
Having trouble compiling it for mips.I updated curl, as It was missing some references, but now it's missing even more with version 7.28.1.Not sure what's going on.EDIT:So it seems that -lcurl isn't being included!

### Reply 12:
I gave 2.9.10 a quick try yesterday on OpenWRT (MIPSBE) and when mining with ztex fpgas on deepbit the hashrate drops to 1/5 of what it should be. On bitminter I would dare say it is faster than it was on 2.9.7.Going back to 2.9.7 on deepbit works fine. It might be another endianess issue, I have not debugged this yet, but just thought I'd report in case someone gets a 'doh!' moment and immediately knows what's wrong

### Reply 13:
A couple of people who are usually in the #cgminer IRC (as per the commit names) are the origin of the latest ztex code changes.One is also the author of the libusb code.Since you dropped ztex and left it hanging, it's been nice that others have taken an interest in working on it.If you have any help for them, then come visit #cgminer and discuss with them.

### Reply 14:
Ok, so I 'left it hanging' nice... still keeping it civil, I see.I don't think this is ztex specific, but I humbly appreciate the invitation.

### Reply 15:
I upgraded to Win8 this past weekend, but haven't been mining since. I DL 2.9.7 last night, and tried it with my Single. It froze about 30 min after I started it. I restarted it this morning before I left for work, and now that worker is <rest of thread truncated>
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9902,"Date: 2016-07
Topic: What to do with Spondoolies SPx
### Original post:
Since the the block halving, Spondoolies hardware are off and I wonder what to do with it. Rack shelves or is there a way to upgrade (replace) the boards with more efficent ones? I've seen an online picture of a MOD Spondoolies 6.0T - 1200wats.Let us know

### Reply 1:
The company is bankrupt. They never released newer technology.Haven't heard of a 6T SP miner, most likely its a fake.Sell them on eBay and buy an Antminer S9

### Reply 2:
I could possibly be a overclocked SP35. There was no official 6T miner, but SP35 was biggest at 5.5T. I did not own one so cannot say how likely the OC is. But that is my guess on what they are showing. OP you have a link to one your talking about?I would agree though and eBay them you will get more there then off of forums, but you do have to deal with ebay/paypal. But selling them I think is best bet unless you happen to have ""free"" power. The nice thing about them is they have the rack mounted design so some will pay more for that. But the value will only go down with SP being gone, and getting older and older.

### Reply 3:
Yep. Sellem!Only profitable with free power.

### Reply 4:
So far, there's been no further plans from spondoolies. They've gone bankrupt and there's probably going to be nothing more from them. Quite a shame, since their miners were actually comparable to Antminers at one point; ever since Avalon really took over, spondoolies got weaker and just went kaput. I'd suggest you sell your miners on either eBay or Amazon, or use escrow and sell here on bitcointalk- I suggest the latter, because you can get reliable escrow, and no fees(except for escrow)! Much more secure than eBay, as people have done chargebacks and have been left high and dry. Their miners are very reliable for people with cheap electricity, but I suggest you sell now- SP20Es are being sold for under 150$ now, and will probably go lower as time goes on.

### Reply 5:
I think they are at the point there is no ""further plans"". With going bankrupt after they were purchased... I doubt anyone else is throwing money at them like BTCS did. At think point I think we can count on anything that was announced (like sp50) being something that will never exist. And I could be wrong on that but I just don't see more money being put in them.But yes I think we all agree sell the SP gear if not ""free electricity"". They are only going to get less and less valuable.

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22164,"Date: 2018-01
Topic: Antminer S9 working with 2 H-boards
### Original post:
i have bought new antminer S9 and i received it few days ago and seems its july batch and when plugged it into the bitmain apw3++ that came with it,it shows empty hardware version and bmminer version.thus i tried updating the firm to november latest version and still same issue.i tried everything and finally, i decided to disconnect 1 board,picked randomly and then the machine worked fine miniging with 2 hashboards.when i plugged the 3rd ,the machine stopped mining and felt like it kept rebooting every 5 minutes,as if the bbminer not found or could not boot.remove the 3rd hashboard and antminer worked again fine with 2 boards.any idea was is wrong ?i am sure it isnt board mulfunction and any board i disconnect it boost with the other 2.and i have smart-ups connected to the apw3++ with 220v stable outputthanks for the help in advance

### Reply 1:
Did you tried to test the hashing board you removed if its working in other connection i mean remove the 2nd and put the 3rd hashing board and try it if it is work it means the hashing board is working also try the cords in other working hashing board if its working it means your cords from your miner is working.. My guess is your PSU its not giving enough power.. could you try to change or use a new one and test your antminer again.. Let me ask if what firmware did you use when updating is it the auto frequency firmware?Check the other firmware here <link> are some other miner having the same issue but they are just down grading the firmware and work fine..

### Reply 2:
i have used the latest posted on bitmain support <truncated> antminer came with july bacth firmware which is older version and still did not work on it.i will try to change power cords but afraid that keep powering it on and off will burn it.as well i guess my power is good as i use smart-ups that stabilize the power input to 220v and have 2000 kw capacity.

### Reply 3:
THNX BITMAXZZZZZZi changed the power cords, in different setup and worked fine all 3 hashboards are working now

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14529,"Date: 2012-02
Topic: Wanted: Your questions!
### Original post:
Hi guys (and girls, if any actually exist here),As most of you probably know, we're starting the first print magazine for Bitcoin that will be published shortly. In that magazine there are several community driven sections, one of which being the ""Mineshaft"" section.If you've got a question that you want answered inside the very first issue of the magazine by the most well known and experienced miners, rig builders and pool operators in Bitcoin, then you can post your questions in this thread. The best questions will be featured in the magazine and the featured submitter will receive a free copy of the digital version of the magazine.All questions should be less than 400 words.CheersMatthew N. WrightEditor in Chief

### Reply 1:
You'll have to be more specific as the readers may not understand what you're referring to.

### Reply 2:
Let's backtrack a bit.I'm asking for questions from the community that they want answered inside the magazine by professionals in that field.I'm also requesting that those questions be written in a newbie-friendly way so that new readers can understand the questions being asked.Being able to understand what someone is asking is not the same thing as being able to answer the question.

### Reply 3:
A magazine huh? Considering all the negative press we get, it might not be such a bad idea, if you can get a distributor. If you're looking at the collectables market, that's cool too.I'll offer a couple questions that newbies may have:Are there still hoarders with 100k+ BTC and if so, why?What happens to Bitcoin if someone comes up with something better?

### Reply 4:
Agreed, and just FYI we plan on having it in Barnes and Nobles and other various book/magazine stores around the US, slowly working our way up.Not even interested in that to be honest. Too many people involved already to settle. It's all or nothing on this one.Awesome questions. I'll be sure to include them. I'll send you a PM shortly for your information regarding the free issue.

### Reply 5:
I'm not as up to date on the techie side of things, but from a sociological perspective a magazine can offer intriguing viewpoints to the average Joe. A magazine isn't as formidable as a book and it has lots of pictures. Magazines are like the direct-to-video of the film world. It has lots of ad space. For something as important as Bitcoin, I can see this having a shot.

### Reply 6:
Unfortunately, what you're discussing would be more of a feature than a letter to the editor, so if you'd like to submit a request for feature, that can easily be done through PM any day of the week.If you have any brief questions you'd like to be answered in the magazine's ""Letters to the editor"" section however, post them here. Thanks.

### Reply 7:
Sorry, that's my mistake. I lost track of which thread I was posting on. The MineShaft will be questions from the community related to mining. It could be philosophical, scientific or social in nature, but again, what you had offered would be more of a feature than a read submitting a question and it being answered. Would you like that question to be considered for a feature just the same?

### Reply 8:
What is currently the most frictionless way to move from USD to BTC and vice versa? Could help a newbie who doesn't want to mine and its afraid of Dwolla or other currencies from Iowa

### Reply 9:
Very good question. I'll PM you regarding your free issue. Thanks!

### Reply 10:
If Bitcoin becomes widely adopted, thereby increasing demand and price, will hoarding be an issue? What solutions are available to mitigate the effects of hoarding?If Bitcoin becomes the globally accepted form of currency, what good reason is there to believe that there won't be a huge disparity in wealth between the rich and poor, and what good reason is there to believe that the rich won't find ways to centralize Bitcoin?

### Reply 11:
The first question is slightly similar to a previous question already seen, but I think it's adaptable. The second question is a great question. I'll PM you regarding your free issue.Thanks!

### Reply 12:
How many questions may I submit?Q1: Do use the Bitcoins you mine or do you simply exchange them for fiat currencies and treat Bitcoin only as a way of making a living? Q2: Have you ever met anyone who's first impression of Bitcoin wasn't ""it must be some sort of Nigerian scam""?Q3: What will happen with alternate cryptocurrencies in the future? Will they be wiped out by Bitcoin and forgotten or will they compete? If so, how will they affect the Bitcoin economy?Q4: How would you counter a situation if a govt. intruduced a new law declaring the use of Bitcoin illegal?Q5: How many GPUs have you fried?If any of the questions fit your needs, feel free to rearrange it as you like - English isn't my first langauge.

### Reply 13:
What do you think of fractional-reserve lending of bitcoin (credits)?

### Reply 14:
What is the best pool for <rest of thread truncated>
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13635,"Date: 2019-11
Topic: New Antminer S15 T15 overclock firmware
### Original post:
Now what are you using to decompile? Since you can't run IDA's armserver on the control board to analyze the binary or are you not using a debugger. I understand how it works and it should work just curious on your methodology which is different approach.

### Reply 1:
I upload a video to Youtube. Show how to decompile, Analysis , and edit the firmware. Link is <link>

### Reply 2:
Ahh I see. You pulled cgminer off it and then did it without the need of the debugger. I assumed for the 15 series cgminer was slightly obfuscated but it looks like they didn't even bother to make it difficult on the 15 series. But I mean hey that is solid way to patch it. As long as they don't obfuscate it this will work on their newer firmware as well. Granted this is fixed frequency and doing that allows basic tweaks it's far better than stock.

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20914,"Date: 2016-02
Topic: My setup help/Power adapter////SOLVED
### Original post:
Hello all ok so I am having to look for an appropriate power adapter I tell you what I have. A Rapsberry pi 22 R-box rockminers and power adapter'sand this usb hub <link> want to run a usb cable from the Hub to the pie and power pi from the hub and I don't want to use the basic power adapter that comes with the hubI don't want to fry the Pi so what is the best power adapter to go for that will connect to the Hub what is the correct voltage and amperageHope some one can helpSam

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    ""hardware_name"": ""R-box rockminers"",
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    ""hardware_name"": ""usb cable"",
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    ""hardware_name"": ""basic power adapter"",
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14532,"Date: 2012-02
Topic: Guide: Flash your AMD GPU BIOS on a Linux Rig (still requiring Windows...)
### Original post:
sorry but what does this do and why do you need to do it?

### Reply 1:
It's to overclock you GPU and speed up the fans, without the use of extra software.The settings are stored in the GPU's ROM so you don't have to set them again.You don't need MSI Afterburner after that, tough you can still use it to watch the temperatures.For Linux the same; no OC tools needed anymore...

### Reply 2:
This is really awesome a big help! thanks. I've been trying to overvolt my 2 5830's forever.

### Reply 3:
You can flash your cards much easier (imho) under windows with the 'radeon bios editor' by TechPowerUp and 'GPU-Z'radeon bios editor comes with detailed descriptions and tutorials you should read before flashing your cards bios!*** THIS COULD DAMAGE YOUR DISPLAY ADAPTERS AND PROBABLY VOID YOU WARRANTY ***Preparation:- get & install both programms (pointless to say, I know...)- pull the actual bios from your card using gpu-z, copy the file to a safe place as a backup to restore the original bios sooner or later. If you have more than 1 card in your rig, make sure you chose the right one, or better: boot your rig with the patient only.- open radeon bios editor and load the bios you pulled using the 'load bios' button.- click the button 'get winflash', install winflash on your rig.- if you have multiple cards in your rig, take a note of the bios checksum on the 'information' page.- if you want to unlock the upper GPU clock limit, go to 'additional features' and try method 1 or 2. method 1 didnt work for me but 2 did with no problems.- if you need higher voltage settings, go to 'clock settings' and edit the voltage on the voltage registers or at the clock info settings. BUT BE CAREFFUL<rest of post truncated>

### Reply 4:
i have tow questions. can i overclock my 6990 and downclock ram? can i overclock my gpu in windows OS and then move the gpu (gpu only) to my linux rig? will it still be overclocked?thanks.

### Reply 5:
This was just what i was looking for.So on Method 2, When in linux it shouldn't affect anything? Reading it may affect some windows drivers to have a invalid hash, but can you verify it doesn't affect linux? Edit: Verified myself, works great, at 950 on each card and slowly testing my way up. Thanks for the tutorial!

### Reply 6:
i have read the description of the clock settings in RBE, but i'm still confused on what to change. i have a 4850 and this is what aticonfig currently tells me:Code:$ aticonfig --odgc <truncated> 0 - ATI Radeon HD 4800 Series Core (MHz) Memory (MHz) Current Clocks : 625 993 Current Peak : 625 993 Configurable Peak Range : [500-700] [750-1200] GPU load : 99%and i see on <link> someone has gotten it 101 Mh/s with core 800, mem 500 and 1.123V. below's a screen shot of RBE, what is it need to change in order to widen the ""Configurable Peak Range"" that aticonfig will allow? thanks<link>

### Reply 7:
What advantages do you get from overvolting?Does it make you able to overclock the GPU clocks more?Does it make it more stable at higher GPU clocks? (at the expense of additional heat/power consuption)Thanks

### Reply 8:
I followed the guide but after flash the bios, aticonfig --odgc and --odgt fails get clocks and temperatures, pplib-cmd also fails, and the mining performance is like at stock clocks. I have tried on Sapphire HD 5830, 5850 and XFX 5830, same result.

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17082,"Date: 2012-03
Topic: Card Downclocking itself (Windows 7)
### Original post:
So here is a funny one I haven't run across before.I used to have two cards in my desktop mining, but one fan started to die so I've taken it out to get it replaced, so now I am just using the one.Before I could just put cgminer on dynamic for the card the desktop was using, and everything was fine, now I usually just close the miner when I'm gaming.Anyway, I was sitting around watching some TV and my GPU clock kept getting dropped down to 400Mhz. No idea why. CCC couldn't change it back, Trixx could but only for a little while until it dropped down again.I figured there might be something wrong with my motherboard, and started to look around for replacements and possible fixes. Well, after searching around a bit and almost buying something new I stumbled across a little setting in flash player for hardware acceleration.This never happened when I had two cards, but apparently hardware acceleration in flash player makes the card go into UVDA mode (something optimized for video rendering or something) which has a clock speed of...... you guess it, 400Mhz. Never ran across this, because my rigs obviously don't use too much flash So, long story short, if your card keeps downclocking it<rest of post truncated>

### Reply 1:
Thanks. i saw this somewhere else on the boards but forgot about it. Its nice to see it posted.

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16368,"Date: 2022-11
Topic: Planning to mining bitcoin and gambling at the same time.
### Original post:
Have been wanting to mining bitcoin for long time but im not sure where to mining plus i wanna gambling and set bet too. Any suggest?

### Reply 1:
Hmmmm gambling and mining?

### Reply 2:
I have came across a platform for this but I dont remember with one

### Reply 3:
For a start, read thisIn short to mine BTC you MUST use ASIC-based miners. No PC is capable of it. PERIOD.As for Gambling, use the Forum's Gambling area.

### Reply 4:
if it's for mining I think only certain people can do thatfor gambling I think the advice from before has been quite helpful, and my advice is that if you want to do gambling, use a platform that is real and pays whenever, there are many trusted platforms in this forum, take a look at the threads that have been given,

### Reply 5:
I buy at gemini and use at cloudbet. Mining would take forever for anything meaningful

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22297,"Date: 2018-01
Topic: Assitance in cooling down 20 S9
### Original post:
Hi,I own 20 S9, and currently I'm facing 2 issues! Noise and the heat. I'm building a place to better to control the inflow and the outflow For those who managed to better control the heat/noise if you can guide me or help to resolve the challenge me that would be great.Thanks,

### Reply 1:
Whats your current setup look likeWhat have you done so for so we can make suggestionsThere are many ways to cool 20 miners

### Reply 2:
Check out this thread on ducting if you want to individually duct each miner to direct heat to another location. If you dont duct the miners you will need to exhaust the room, but more details are needed about your current setup and location. <link>

### Reply 3:
Find a place to host them. Unless you have power under $0.08/kwh it makes no sense to run them at home.

### Reply 4:
If you scour the forum you will find various things people have done for themselves.My suggestion because it must be a whole room is to buy some thick insulation r16 or 22. Insulate the walls that you find the noise travelling through seal that with poly. So you don't have to worry about the fibers and your miners.Next for your heat you need to boost your rooms air exchanges. To do this I would do the hot side cold side split. Where you essentially build a wall through the middle of your miners. Have an air intake on the cold side bringing, and have an exhaust fan on the hot side that discharges outside.Or just size an I take that brings in cool air at ground level and an exhaust fan removing from the top of the room wherever the miners discharge their hot exhaust.Another option would be to build a separate shack/shed outside run electrical to that and size your intake and exhaust to maintain temps.

### Reply 5:
My miners run in a small building. I vented all the miners out through the floor with vent tubes. The underside of the building is open to the outside as the building is up in the air a bit. After I did that, the noise level dropped significantly and the A/C can now easily keep the place cool and the miners are happy.

### Reply 6:
I saw good answer on this question from @NotFuzzy warm(user of this forum as well). He linked this.<link> think this is great way to remove extra heat, maybe you will need 3 of these machines, since 1 is good for approximately 15 of them.

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3935,"Date: 2016-11
Topic: Okay I am trying to figure if a group buy from canaan is needed or not.
### Original post:
I got this emailHi,We will email to inform you to make the payment before the shipment. Shipment begins on November 21 (the US time).Bank transfer is accepted only.Thank you.Best RegardsAngela SalesTEL: +86 13681022683Skype: auspiciouslu<link> I never did a bank transfer to China from the USA.I have Wells Fargo and they do transfers to China up to 5,000 and it seems to be only 1 bank in China is to be allowed.The minimum amount you can send is $25.The maximum daily amount that you can send to all beneficiaries using multiple Wells Fargo ExpressSend Service Agreements is $5,000. The maximum total amount that you can send during any consecutive 30-day period using the Wells Fargo ExpressSend service is $12,500. You cannot name the same beneficiary on more than one service agreement.Lower limits may apply at some Remittance Network Members.The following Remittance Network Members have additional limits on the amount that a beneficiary may receive from any source or combination of sources. Limits described as Limit using multiple agreements are applied across all ExpressSend service agreements which a customer uses to send ExpressSend transfers to that RNM. In many cases the Remittance<rest of post truncated>

### Reply 1:
more review shows me CollapseCan I use ExpressSend for business-related payments?The Wells Fargo ExpressSend Service is intended for use only for <truncated> remittances and not for commercial or business-related payments. For business-related payments, Wells Fargo offers an array of other services that may meet your business needs. Please consult with your personal banker.So it looks to me I can't do a private transfer I have to create a business account.So How many USA members have done a bank transfer to China?No newbies please.

### Reply 2:
Sounds like something bitcoin would be great for...

### Reply 3:
Im looking with Allinvain since he is in Canada but if its not working, I may buy one from you phil. Will let you know as soon as I have the answer from Allinvain.Could be so much simpler if they will accept BTC

### Reply 4:
I would be happy to use paypal , cc or bitcoin...Bank transfer looks to be a real hassle for me to do.The idea of finding a new bank is not going to happen.and I had hassles with wells fargo and multiple accounts being opened by them for me.

### Reply 5:
cant you wire money through western union or something? I seem to remember having to do something weird like that to get bitcoin back in 2013

### Reply 6:
Not sure about the how,to,do it. Frankly I do not,feel like sending 2 k for two units via western union.I have btc I have PayPal I have multiple Credit Cards.My ratings here on bitcointalk, PayPal, eBay and Credit cards .Are as close to,perfect as possible .And others have used PayPal to pay them.

### Reply 7:
No WU will not work, they want direct bank to bank, for th eincreased cost I decided to go with an S9 I'll just under power a little to ensure it lasts.

### Reply 8:
yeah they rejected my request for paypal today.So I am going to do more gpus.

### Reply 9:
Has anyone successfully purchased from Canaan? Maybe there's a secret.

### Reply 10:
Not really a secret...Bitcoin = having issues in China with that, and the volume they likely will move makes getting cash a hassle most likely. dick move but I see where they come from.Credit card and paypal have fee's which they don't want to deal with etc. most likely, and can all be clawed back.Bank to bank transfer, no fee, a lot harder to claw back.From a simplicity point I see their thought process.From a business point, they are probably still selling shit tonnes of them.But from a different business point, they are pissing off and alienating a lot of potential buyers.Maybe batch one will be like this for a QUICK and easy ROI, and later on they will open to BTC? Who knows..

### Reply 11:
I was able to get two via Btc.I was asked to pay a 25 dollar service charge.I have paid 2043 in btcIt would have 2018 in bank transfer.So 12.5th for 2043 and it is fedex so I am paying some taxes on thisI will be lucky to pay under 2100 when all is said and done.The s9 is far cheaper Say 1800 for 14th

### Reply 12:
the s9 is not as readily available nor is as reliable?

### Reply 13:
true so this may be decent gear.

### Reply 14:
Honestly it's time to just back the community.We need to do a groupbuy to speed up sidehack's development and dump all our funds into him. Do you think sidehack could offer comparable value?

### Reply 15:
I bet he could, but it's much too early to see how much the miners will cost- higher efficiency is probably going to happen compared to the A721 though. There will be a nice, big sale for sidehack miners once they come out, though, no rush right now. if it's anything like the Gekko stick, sales will not be a problem.

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23883,"Date: 2022-03
Topic: S17 fan speed?
### Original post:
I'm looking to replace some fans on a S17. ZeusBTC had this on their fan replacement page.After seeing this I realized my fans never go above 6k, with 5800 being the most on 2 of them. Seems the 7k fans pull 5A is this safe to run on a s17? I vaguely remember coming across a post on here about someone frying a control board by putting 5A fans on a asic.. just cant remember which asic it was from bitmain. If I'm able to go full 7k fans, I will, currently eyeing HVVH 5A 7000RPM fans on amazon right now. <link> Any other suggestions for US resellers?

### Reply 1:
The 12V supply on the APW9 can only handle 12A, so 4 fans at 5A each isn't going work. RPM isn't really the most important thing to look at when selecting fans. The fans on an S17 have to push air through hundreds of heatsinks, and that resistance creates high static pressure. So the maximum static pressure spec and max flow are more important things to look at.

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23953,"Date: 2022-05
Topic: minerd LONGPOLL pushed a new work
### Original post:
Hi everyone,First post here, trying to showcase mining software as part of a school final project. (DISCLAIMER: I understand mining BTC with a CPU is absolutely worthless, this is for <truncated> purposes only)I've setup minerd.exe to solo mine with the following command: minerd.exe -a sha256d -o <link> -O user:password <truncated> output I get in cmd is this:[2022-05-15 03:31:59] LONGPOLL pushed new work[2022-05-15 03:32:00] thread 4: 268435424 hashes, 11537 khash/s[2022-05-15 03:32:03] thread 12: 268435424 hashes, 10787 khash/s[2022-05-15 03:32:03] thread 11: 125082152 hashes, 9109 khash/s[2022-05-15 03:32:03] thread 14: 144103736 hashes, 9329 khash/s[2022-05-15 03:32:03] thread 10: 224541064 hashes, 10124 khash/s[2022-05-15 03:32:03] thread 5: 204924616 hashes, 9975 khash/s[2022-05-15 03:32:03] thread 9: 20562568 hashes, 7822 khash/s[2022-05-15 03:32:03] thread 15: 162699176 hashes, 9544 khash/s[2022-05-15 03:32:03] thread 3: 69090224 hashes, 8300 khash/s[2022-05-15 03:32:03] thread 0: 35736592 hashes, 7920 khash/s[2022-05-15 03:32:03] thread 13: 248499488 hashes, 10462 khash/s[2022-05-15 03:32:03] thread 6: 181701152 hashes, 9736 khash/s[2022-05-15 03:32:03] thread 1: 5105120 h<rest of post truncated>

### Reply 1:
You are not submitting shares to f2VERY basic view of it:Bitcoin difficulty is very highPools accept lower difficulty shares to prove that you are actually hashing / doing work.BUT a CPU is so slow that it can't even generate work up to the lower difficulty levels.Pools expect a share from you every ""X"" seconds if they don't get it they will accept lower difficulty. BUT only to a point. A CPU is well below that point. The same way a human on the sidewalk is way below the top point of the Empire State Building.Long polling (longpoll) allows worker to know when the work they are doing isn't useful anymore (new block found) it is part of the old way of miners talking to pools / wallets when using the getwork protocol.Stratum is the newer (2010? 11?) better faster way of miners talking to pools. Wallets do not implement stratum.-Dave

### Reply 2:
Dave,Thanks for the explaining this. Definitely cleared some confusion and easy to understand.Maybe in the future I could grab a hold of an ASIC miner for some meaningful CMD output and work done.Appreciate it!

### Reply 3:
That's pretty much it.They have the same meaning, just different protocols, LONG POOLING is an HTTP connection between your PC and pool which the server drops when it senses a new block found by the network, before dropping the connection it will send a new getwork, I also think it may push a new work if you submit invalid shares for reasons like exhausting the nonce (which I don't think is the case with your CPU).This old getwork method is probably done with, I don't think any pools support it nowadays not even the new getblocktemplate improvement. Stratum is a new protocol that is a lot more efficient and it's the most commonly used nowadays.I can't tell for sure if your settings are correct, sadly, when people were mining with their CPUs back then I don't even think I heard about bitcoin , all the info I have regarding these old mining methods come from reading out of passion, but it does seem like you initiated a stratum connection and it went through, but your CPU can't submit a share greater than the minimum diff requested by the pool.If you leave it there long enough or use a pool that has lower diff, you might register there, but with 10kh worth of hashrate,hm,, it could ta<rest of post truncated>

### Reply 4:
If the testnet difficulty is still to high to find a block with your CPU. s a thAought there are some altcoins out there which are pretty much dead but still have active nodes / miners you can probably find one of them that you can CPU mine.Keep in mind there is no way to do anything with these coins other then mine. No exchanges / no value just kept alive because people want to keep them going.If you are looking to learn playing with those may help you. Testnet is better since it is BTC, but not if you can't do what you need to do.-Dave

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4223,"Date: 2012-11
Topic: Are ASIC's the endgame?
### Original post:
Let's not turn this into a troll/fanboi thread on ASIC's. My question is, is there any technology out there that could push ASIC mining out the window the way ASIC's will do to GPU and GPU's did to CPU, or is ASIC mining 'as good as it gets' and will be the endgame for bitcoin mining?

### Reply 1:
Yes and No.Right now ASIC is the final say amongst silicon based chips.In the future, quantum computing might push it out.

### Reply 2:
If someone finds someway to reduce the work by for example 20 bits it would be a million times faster.That trick could work for all current technologies, <truncated> keep in mind, the trick would be something many cryptographers haven't found yet. So personally I would bet on quantum computers.

### Reply 3:
There are those who think that ASICs are the endgame for pretty much everything. Meaning that to keep up with Moores Law it will be necessary for eventually every person on earth to work in the microelectronics industry.Obviously this won't be the case but we are already at a point where it takes an ridiculous amount of manpower to design and construct the things, and it isn't getting better. So according to this theory moores law will be cut short because a lack of human resources.

### Reply 4:
many people wouldn't believe that for many crypto technologies so far... from md5 to SHA-1...

### Reply 5:
For all intensive purposes ASICs are as good as it gets. Of course there are different manufacturing processes of ASICs and they are progressively getting smaller. So this is certainly room for improvement within the ASIC domain.If quantum computing turns into something real that may be the next step, but it's not exactly a feasible step because there have not been many practical implementations of it. These technology have to widely accepted for scientific computation or PC industry before someone would port the technology and make it cheap enough for bitcoin mining.

### Reply 6:
ASICs might be the 'endgame' in terms of a type of technology, but the realization of that technology has stepping stones and can be improved upon. Process/die size is the big one that can change and that will enable more work to be done per clock or Watt leading to more efficient solutions.By the time ASICs as a technology is obsoleted, all the bitcoin blocks will have been mined anyway Edit: Ninja'd by abeaulieu

### Reply 7:
Do you know what type of improvements are we looking at? Double Gh/W from the best (future) existing ratio?

### Reply 8:
Ah, I hadn't thought about Quantum, but as someone mentioned above, I don't really see them really being a factor for some time. Hopefully I'm wrong, as it'd be awesome to have them, but it's just so far removed at this point that I think you can discount them for a while.I agree that people will be able to tweak and prod ASIC's just like GPU's improved over time, but I was really wondering if there were any future contenders for bitcoin mining and it looks like ASIC's are it for a while.

### Reply 9:
But that doesn't imply an end to mining.

### Reply 10:
Mah purposes be mo' intensive den yours.I agree that the move to ASICs will likely be the last big leap before quantum processing. That said, within the limits of today's ASIC technology, I think there's still room for a few more doublings of efficiency yet.Regardless of the technology, there's always the possibility of algorithmic improvements -- ""mathematical shortcuts"". Things like this:<link>

### Reply 11:
I do think that ASICs are the final step in terms of hardware progression, but can't those ASICs be further improved in the future? Can't they be made to be smaller, use less power, and faster clocked?Just for comparison, BFL said that their chips can be clocked upwards of 1GHz, but that they won't be clocked that high right out of the box. I want to say they're running at 500MHz, IIRC? Isn't it possible in the next 5 years to create a product that uses a smaller manufacturing process, and is clocked at much higher speeds, say 2GHz? We could have the future SC Single TURBO making 200GH/s @ 40W/Am I wrong about all of this?

### Reply 12:
I'm not sure if you really want to clock these things at 2GHz.A normal cpu/gpu has many parts that aren't active together.If you have a bitcoin miner the size of a modern processor at the same manufacturing process and at the same clock speed, it will generate very much more heat.

### Reply 13:
Yeah, and eventually you get to a point of diminishing returns. If you get 10% more out of a unit, but burn it out 15% faster, what's the point?

### Reply 14:
Because with difficulty increasing, increased performance now will find more shares than longer life.

### Reply 15:
I'd summarize it as: Once ASICs are out, we're coasting along with Moore's Law. There will be improvements, such as smaller circuits on chip, more efficient designs, and increased parallelism, but these will be evolutionary improvements,<rest of thread truncated>
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4238,"Date: 2012-12
Topic: [Poll] Will we see ASICs delivered by any manufacturer in December 2012?
### Original post:
In light of the new announcements of delays, I'm interested to see everyone's opinion in poll form.I even included an ""ASICs are a scam option"" for the tin foil hat crew! Do you trust ASIC manufacturers in regards to shipping dates anymore due to the constant delays, or has your trust never wavered?

### Reply 1:
I think all the ASIC manufacturers jumped the gun in their announcement in an effort to generate buzz and capture market share through pre-orders that lock up the money from going to a competitor. Honestly, it seems like none of them should have even announced anything until December since they all seem to be in the prototype (at best) stage.The problem with that strategy is that although historically the folks behind the ASICS (BFL, Avalon, etc.) have a track record of actually delivering a product (specs or real world performance aside), it breeds distrust since they have to continually play this game of ""IT MIGHT DROP EARLIER THAN X"" countered with ""BECAUSE OF X, IT WONT HAPPEN UNTIL RELEASE DATE""PERSONALLY, I don't think we'll see units shipped until late Jan/early Feb at the earliest. It seems that all the manufacturers are still prototyping live hardware beyond the emulated prototypes. So that's my vote

### Reply 2:
I guess poll threads don't incite debate. I will try to get it started! My opinion on the matter is that I will not ever trust any news that comes out of the BFL or bASIC camp from this day forward, until there is some sort of empirical evidence.The only manufacturer that has an inkling of my trust at this point would be Avalon, they are the only ones that have not given me a reason to distrust them.If Avalon is still shipping in January, it could beat both BFL and bASIC.

### Reply 3:
None of the ASIC manufacturers has a working prototype yet. When any of them have some, they will need to undergo rigourous stress testing before any serious manufacturing can begin.My bet is Avalon's 110nm will ship first, but will also be the first to be unprofitable at it's higher Wattage consumption. <truncated> i think will be next, their 65nm will be the best bet if they ever actually deliver and don't go bankrupt first. Flawed chips, wont even prototype until January IMO. (March/April).bASIC 90nm structure should avoid the pitfalls of a 65nm process. But now redesigning PCB, offering higher GH/s to appease punters. Has been awfully quiet recently other than saying 'sorry not been around lately mega busy'. Gut feeling says he may have bitten off more than he can chew. (March/April) if he doesn't run off or refund everyone by then.When i see real working ASIC's that dont' burn up and crash within weeks, then i'll invest.Just my 2 cents.

### Reply 4:
Just as you said ""None of the ASIC manufacturers has a working prototype yet"", if someone promise his asic miner could got better hash with lower wattage consumption, you need not believe it at all.

### Reply 5:
I vote for January.But still hope for my SC, for christmas gift.

### Reply 6:
""... in early 2013 they will start shipping to over a thousand customers who placed advance orders.""source: <link>

### Reply 7:
The information in that ""technology review"", is only from this forum(aka speculation).

### Reply 8:
We all do, I kinda have a hunch for this. 11th of December is very close, hope the news for BFL are good.

### Reply 9:
This poll shows just how many suckers still exist in this community.

### Reply 10:
Actually we plateaued it never went down.

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    ""hardware_name"": ""bASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon's 110nm"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""65nm"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bASIC 90nm"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SC"",
    ""hardware_is_owned"": true
  }
]"
16137,"Date: 2021-10
Topic: Now is definitely an excellent time for personal mining
### Original post:
why would you say soBecause Chinas large mining farms have been closed, the computing power of the entire network has been reduced a lot, and the difficulty of mining has also been reduced. At this time, the amount of currency produced has increased, and the income of individual mining at home will also be Increase, plus a great tool, increase wealth is really easy<link>

### Reply 1:
Difficulty hasn't changed for the current epoch. Any profitability change will occur in the next epoch. I highly doubt that it is very profitable for anyone right now. Difficulty remains unchanged and the price has dropped quite significantly. The only time casual miners are able to get any significant profit is that if the difficulty drops drastically while the price rises at the same time. Else, difficulty tracks the profitability and you're better off just buying your coins.

### Reply 2:
The cost of buying cryptocurrency directly is too high, and the investment in mining is still much less than that of buying cryptocurrency directly. We have to control costs and risks

### Reply 3:
The cost of buying cryptocurrencies Bitcoin is not too high compared to a couple of months ago when it was almost double the current price. And you can always buy a fraction of a Bitcoin depending on how much you have, you can as well DCA.Mining investment depends on a lot of factors such as your capital and access to cheap electricity, so it can only be relatively cheaper, but it's not always like that.

### Reply 4:
Have you been doing it your own way now?

### Reply 5:
I don't think it will be profitable to mine personally, difficulty is still very high even though some miners in China has pull the plug. Might be better to just buy BTC and hold instead to solo mine which might give you a big head ache later as there are a lot of factors to consider, specially where you are going to get cheap electricity? and then mining gear are also very expensive.

### Reply 6:
There are still a lot of cheap electricity in Asian countries. This is easy to find. The price of mining machines is now reduced. Small-scale personal operations are still very profitable.

### Reply 7:
in an age of forbalitatas like this, it is indeed very difficult for us to become miners, given the uncertain prices and making miners feel very confused about unstable prices. What if they mine in large quantities.what if the price doesn't go up like this? What is expected is that it will be a loss for the miners themselves.And if the price goes up, the miners can get abundant profits.that is what we call investment. We can determine the selling price and buying price in a short time.

### Reply 8:
It looks like you've forgotten about the issues that might come with mining investments; It's not always going to be a smooth <truncated> with faulty boards, PSU's and etc... > Shipping them for repair [depending on the situation, it could lead to additional costs] > Less hash rate.I haven't checked if that's indeed the case, but I don't think it'll last forever...

### Reply 9:
It is not. Think about it. Mining is an entire industry by now and the barrier of entry has been raised again and again. China explicitly banning certain Bitcoin farms might have some impact on the difficulty in the future but it has certainly affected the prices right now. Those miners have access to the lowest electrical rates and ASICs, as they're doing it in bulk. Do you really think an average person can mine at a lower cost at them? Most likely not.Any difficulty drop is almost always shortlived and the subsequent difficulty change will result in a significant change in difficulty as well. It is possible for people to be mining for a profit (probably 1-2%), if difficulty drops further and price increases. Reaching ROI can take months and most revenue are not sustainable. I can guarantee you that it is faster (and safer) for people to put $4K in Bitcoin than to purchase an ASIC, wait 7 months for ROI, if that is even happening and potentially risking having to stash it away somewhere after the difficulty starts increasing again.There are a ton of things that can and will go wrong in the process. Investing in mining equipment without taking into account further fluctuation in p<rest of post truncated>

### Reply 10:
I think its easier and possibly cheaper to buy cryptocurrencies rather than mine them. Personal mining era has passed.

### Reply 11:
If you have a low fee of electricity cost or almost free of the electricity fee, you can start personal mining at your home because maybe you can earn some nice rewards from bitcoin mining. But if you still pay a high electricity cost, bitcoin mining will not be profitable. Even if the difficulty is reduced a lot, you still need to think about the electricity cost. It will be different if you can have renewable electricity from solar, water, wind or else you do not need to <rest of thread truncated>
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21215,"Date: 2016-12
Topic: Antminer S7 will not power
### Original post:
Hey guys, I am new here and to bitcoin mining in general. I live in North America and have two Antminer S7s connected to two EVGA 1600W PSU individually. I used the EVGA PSU tester to make sure the PSU is not defective and the PSU kicked on. I then hooked the two Antminers to the PSUs and nothing kicked on. There were no lights on the antminer S7s and the EVGA PSU did not kick on. Is there a voltage issue here? And if there is a issue here, how can I fix it?

### Reply 1:
Did you power all 3 hash boards with 9 PCI plugs. AND the controller board with 1 more PCI plug? Are your fans plugged in correctly?I have run an S7 and now an S9 with an EVGA1600. No power issues for me. Just got to use the right cables that should have come with the PSU's.PS. On the EVGA 1600, you have to remember to put the terminator cap on the end of the long cable bundle.

### Reply 2:
May you please specify on the terminator cap? I never heard of that term or seen something like that.

### Reply 3:
You need to jump across a couple pins to turn on the psu - normally the power button on your computer does this but we're not using the psu in a computer, right? Look for the PS ON pin and connect it to any COM pin. PSU turns on, and so does anything attached to it!

### Reply 4:
Yeah, it feels like OP isn't doing anything with the motherboard connection.The PSU doesn't magically turn on if there is no connection on the MOBO connector.

### Reply 5:
You need a jump starter bridge something like this <link>

### Reply 6:
Yeah, that's exactly what I meant by ""terminator cap"". LOL. I couldn't think of the correct term. It came in the box with my PSU. You need to cap off (or terminate) the end of the long cable that would normally go to you PC.Sorry for any confusion.

","[
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12107,"Date: 2012-11
Topic: Cgminer compiling on windows - fail
### Original post:
I open thread to not mess much in main cgminer thread and allow to easy find windows compiling related troubles.I`m trying to compile it on win7, do everything like it is in windows-build.txt file but hit wall.I want cpu+gpu+scrypt and nothing more:$ CFLAGS=""-O2 -msse2"" ./configure --enable-cpumining --enable-scrypt --without-libudevIt is not detecting <truncated> <truncated> Options Summary: <truncated> FOUND: pdcurses <truncated> NOT FOUND. GPU mining support DISABLED <truncated> Disabled (needs OpenCL) <truncated> SDK NOT found, GPU monitoring support DISABLED <truncated> Disabled <truncated> Disabled <truncated> Disabled <truncated> Disabled CPU Mining...........: Enabled ASM.(for CPU mining).: <truncated> make (or gmake) <truncated> <truncated> -O2 -msse2 <truncated> <truncated> -LC:/MinGW/lib -lcurl -lcurldll <truncated> -lpthread -lws2_32 <truncated> make install (as root if needed, with 'su' or 'sudo') <truncated> /usr/localTried git zip, and source tarballs...Code:$ set|grep <truncated> Files (x86)\AMD APP\'(...)It is installed, ADL files copied etc...

### Reply 1:
<link>

### Reply 2:
Thanks, it works on one machine (win7 32) on Win7 64 still no workie. I`ll try reinstall mingw and stuff.Compiled, running, but LTC CPU mining performance is less than I expected. CPU miner minerd (<link> is making about 3kh/core where cgminer only about 1kh/core.Tried different -O2 -O3 -Wall, even added yasm to my mingw installation - same results.When yasm is present I can not use -msse2 option because it fails on make.As far I know cgminer include pooler cpu miner code, why so much difference?

### Reply 3:
rav3n_plTry to play with this keyCode:--algo|-a <arg> Specify sha256 implementation for CPU mining: auto Benchmark at startup and pick fastest algorithm c Linux kernel sha256, implemented in C 4way tcatm's 4-way SSE2 implementation via VIA padlock implementation cryptopp Crypto++ C/C++ implementation sse2_64 SSE2 64 bit implementation for x86_64 machines sse4_64 SSE4.1 64 bit implementation for x86_64 machines (default: sse2_64)auto is not always the best choice

### Reply 4:
None of those matter for scrypt mining. No CPU mining in cgminer is optimal, and that's intentional as it is only there for legacy reasons and testing and I don't wish anyone to mine on CPU with cgminer for anything other than an academic experience.

### Reply 5:
ckolivasCan you fix the issue with compiling on Windows machines in next releases?

### Reply 6:
It compiles fine on windows. There is an extensive readme on how to do it included in the source. Don't guess, follow the instructions.

### Reply 7:
Why 2.7.x are compiled well and 2.8.x only after modification of configure.ac?

### Reply 8:
ckolivas, this great info (windows-build.txt) is missing something...Tried to make it ""from scratch"" on 2 ""clean"" machines and both are not detecting opencl properly w/o manual edit of configure file.I think there is some small thing (additional change in ""set"" maybe? missed slash/backslash?) that need to be done on compiling machine to make it working.

### Reply 9:
""cgminer: -a: Can only use scrypt algorithm"" I`m mining litecoins.

### Reply 10:
This is the sum total of the configure changesCode:git diff v2.7.7 v2.8.3 configure.acdiff --git a/configure.ac b/configure.acindex d0de0c8..0d77b97 100644--- a/configure.ac+++ b/configure.ac@@ -1,8 +1,8 <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> m4_eval(v_maj + v_min))@@ -92,6 +92,7 @@ case $target in PTHREAD_FLAGS="""" DLOPEN_FLAGS="""" <truncated> <truncated> [0x0501], ""WinNT version for XP+ support"") ;; powerpc-*-darwin*) CFLAGS=""$CFLAGS -faltivec""@@ -351,8 +352,7 @@ <truncated> [libcurl >= 7.15.6], <truncated> [1], [Defined if version of curl supports <truncated> [libcurl >= 7.10.1], <truncated> required libcurl dev >= <truncated> [libcurl >= 7.18.2], <truncated> required libcurl dev >= <truncated> CCAN wants to know a lot of vars.See anything?Otherwise, yeah of course scrypt can only do scrypt when scrypt cpu mining. Besides, cpu mining is deprecated and unsupported.Please stick to the main cgminer thread with issues.

### Reply 11:
ckolivasI've just checked: 2.7.6 and 2.7.7 don't compile but 2.7.5 and before doesSo from 2.7.6 it doesn't compileThis is key configure changes:

### Reply 12:
Thanks, that helps a lot.

### Reply 13:
ADL detection bug is fixed.I step into another one right now. No errors on .configure but make <truncated> ~/cgminer-master$ makemake <truncated> Entering directory <truncated> all in libmake[2]: Entering directory <truncated> GEN signal.h GEN string.hmake <truncated> Entering directory <truncated> Entering directory <truncated> CC memmem.o CC sigaction.o CC sigprocmask.o AR libgnu.amake[4]: Leaving directory <truncated> Leaving directory <truncated> Leaving directory <truncated> all in compatmake[2]: Entering directory <truncated> all in janssonmake[3]: Enter<rest of thread truncated>
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22904,"Date: 2019-03
Topic: power consumption
### Original post:
what is the best way to measure power consumption? I see a lot of people reference the killawatt devices but I do not see any 220v version for US outlets. currently, all my miners are on L620P - is there an easy way to measure or do I need to change all my outlets? I would not mind changing one out but again all the killawatt devices I can find are for 110v outlets maybe I am blind and missing something?

### Reply 1:
You know you could pretty much cut the end of the power cable and replace it with whatever end you want, i take U.S standard cables replace the end with an EU standards where i simply ignore the earthing wire.One might argue that jointing cables like that is not good (ok maybe) but it worked for me for years, so specially if you just wanna use it to measure power consumption for a day or two, there should be no problem.

### Reply 2:
Not blind at all. I spent hours looking for something ready to go out of the box, we just don't have it. They are mostly geared to measuring the draw from household devices. Can't confirm but I think all of Europe is 220 V and 50 HZ, so 1 meter to rule them all sort of deal.Where as we have 110 to run most house equipment, and 220 available for appliances with a larger draw. (Dryer, Furnace, Stove). I had found a few youtube videos previously for a DIY project, but I put that on the backburner last year. I recently started looking into it this week and am putting together a parts list. Depending on the quality this will be somewhere between 40-120 CAD for me to put together. I linked one I found below for a build. I want to go thris route because gear is pushing well over 2000W these days, so something robust would be nice.I'm just waiting to see if I am going to buy a PDU with the capability first, haven't heard back from the seller in a few days. They're just so darn expensive to ship.<link>

### Reply 3:
let us try this again you want the meter the have the correct receptacle ?that is a no gothe meters will have thiscut psu wires and add thisor make 1 adapter cable I am getting 4 of these tomorrow<link> sold them to me.

### Reply 4:
What about using something like:<link> them anywhere you want. At the breaker box or at an outlet. Even make an adapter to be portable. It's kinda future proof. Lots of different brands and price ranges.some even have the split transformer:<link> are all over the place but can usually find one of the brands in the $10-$15 range.

### Reply 5:
some 110 will do 220 up to 1800 wattswait for linkthis will do under 10 hours and under 1800 watts<link> will do 24/7/365 up to 22 amps at 220<link>

### Reply 6:
i am looking for something like your first link (actually have a few of those) but that would work with my 220v outlets - I have not found a single cord nor outlet in my area that resembles a standard 110v outlet. my first miners came with L6-20P cords already (bought used) so I made all my outlets that to be consistent but the only other 220v outlets I see are the ones like mine, like dryer/oven outlets, or like the duplex ones - in which case I have not found a meter that will use any of those so I have not converted any outlets as of yet.

### Reply 7:
I have thought about that but the outlets themselves but the outlets themselves that accept that standard plug type are all 125v rated - I cannot find one that is 220v rated. nice - I am holding off on PDU's for the moment a bit more expense - but if I can ever expand, my plan is to go with PDU's in a new facility and basically eliminate the building I am currently using.I am no electrician - I had to pay one to do my wiring - but from my understanding, this looks like I could install this on the outlet?

### Reply 8:
@Artemis3Type F ""Schuko"" plug for the win.

### Reply 9:
wish it was that way here. every freakin outlet is rated differently it seems. and there are dozens of configurations just between 110v and 220v types.

### Reply 10:
The split transformer would make it real easy, no disassembly to thread hot lead through, just snap over. mounting is the most difficult aspect of these type meters. Just make sure to kill the power to the line before installing.Most of these products don't come with power wires, but you can use any wire. I've always used the kill-a-wat meters on 120 outlets but when i switched to 240 for miners this seemed more practical. I was going to make it portable but found it just as easy to install new meter for each use then do simple math as I added or subtracted from PDU.There are you tube vids on installing the meter.

### Reply 11:
Why do you ignore the earthing wire? Can't you use an euro with ground? Although the countries within Europe each seem to have their own little variant, most do seem to have an earthing variant of the Europlug...

### Reply 12:
you can pretty much euro with ground, despite it has only 2 ends, the shield around it has the ground connected, but here we don't really have<rest of thread truncated>
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17194,"Date: 2012-07
Topic: is someone nicking my coin?
### Original post:
Ok so been a noob I have been going to the free coin sites and getting little bits!yesterday my balance was 0.00000003today my balance is 0.00000001whats going on!I thought *ONLY* I could remove coins from my eWallet(or am I missing something and making a complete arse out of myself! )here is what blockchain.info says<link>

### Reply 1:
Ewallets use their own accounting systems that mix the balances of addresses together, therefore you can't rely on a block explorer to see the final balance. If you log in, you would find that it is all there.

### Reply 2:
my eWallet is at instawallet.org and you dont have to log in. I just use the bookmark that was provided.Yesterday it said Balance was 0.0000003Today is says 0.00000001I just used blockinfo to see what transcations accured (I thought that was what it was for (no?)

### Reply 3:
OK, when you visit the bookmark you should see that the balance is still 0.00000003. You can only rely on blockinfo when you are using your own wallet. When you deposit coins into Instawallet, they take them out of the deposit address and put them into a big wallet and mix them together with other coins. When you withdraw, the withdrawal won't come from the address you deposited to. They use their own accounting backend system to keep track of how many coins you are supposed to have.

### Reply 4:
when I visit the bookmark today is says balance is 0.0000001

### Reply 5:
I assume you mean 0.00000001 not 0.0000001. In that case, is there a log of deposits and withdrawals available? Are you sure you didn't withdraw? Have you posted your URL anywhere public?

### Reply 6:
I could PM you the full address if it helps (but I douth that somehow )I only use it to learn stuff anyway so its no real problem!it reminds me of the bank robbers who would take 1 penny out of everyones account for a month or so and stick it into there own account and then cashout the accounthowever blockchain.info does look like I am sending something to other addresses ( but maybe I have that wrong? )[qoute]is there a log of deposits and withdrawals available?[/qoute] I thought thats what blockinfo was for[qoute] Are you sure you didn't withdraw?[/qoute] Definitely not![qoute]Have you posted your URL anywhere public?[/qoute] No, I only have it less that a week also I know not to do that!

### Reply 7:
Ive just spotted this on my instawallet pageWARNING:It's all available in the blockchain for an imposter to access as well. so maybe the site is only useful for onetime oneoff transcationsfunny I did actually learn something!

### Reply 8:
So no one can shed any light on this for me?

### Reply 9:
Go use a better client-based eWallet like blockchain.info or strongcoin.com. Instawallet and the such is only good for one off transactions as you never know when they'll get hacked.

### Reply 10:
Did you release the URL to the wallet anywhere?

",[]
11846,"Date: 2012-03
Topic:  Fan Speed Bug? (ATI - 5850)
### Original post:
Uninstall driver, reboot, use driver cleaner (it'll revert to the previous driver version for some reason and be impossible to reinstalla different version), reboot, install driver + the SDK you want without CCC, should be good to go. I always had problems with CCC installed. Also 2.6 SDK is terrible for the 5xxx series. Use 2.1 + underclocked memory frequency (~330-350 for 256 worksize and 160-205 for 128 worksize which is a tiny bit slower but a little less power used) for optimum 5xxx performance.

### Reply 1:
Turned out to be a temp issue in the end.sorted out better airflow and problem solved. no relation to driver\sdk versions after allThanks for your help

### Reply 2:
oh, that bug. yeah if your gpu is overheating, it'll throttle gpu speed and it'll also go to a different fan curve, nothing you can do about it except cool to gpu better before it throttles.

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22189,"Date: 2018-01
Topic: S9 hash board failing
### Original post:
<link> you can see, one of the 3 boards on this relatively new miner isn't hashing. Rebooted the machine this morning when problem surfaced, and all three boards hashed normally. But this one went out again and won't start hashing on reboot.Any suggestions on why this may be happening and how to fix it?Thanks.

### Reply 1:
Which PSU are you using?

### Reply 2:
APW3++

### Reply 3:
You need to look at/post kernel logs if you want any kind of diagnosis. Since there are no user servicable parts inside the answer will always be the same unfortunately. Warranty time.

### Reply 4:
You're running the APW3++ on 220V?

### Reply 5:
Looks like the board is overheating. Can you try it at a lower frequency?Or check to see if something is blocking the heat sinks. Maybe it ingested something that is blocking airflow.Or now that I think about it, maybe a heat sink fell off a chip. That would cause a pretty quick trip to 80c. Does it rattle when you shake it gently by chance?

### Reply 6:
These boards run over 110c, I would not call 82c anywhere close to overheating nor is it anywhere near the shutoff temp built into the firmware.

### Reply 7:
Power down and unplug/replug all the ribbon cables. Switch them to different boards, even. Looks like flaky comms as it found all the chips and they passed singleboardtest.

### Reply 8:
82c is a bit unusual when the other boards are significantly cooler. There might be a reason why.

### Reply 9:
When you say ""These boards..."" are you talking about the board temperature being 110 degrees, or the chip <truncated> miner shows , one unit for example, running at 70 deg C, but the chips are running 83/72/78.Is it okay for these chip temperatures to be in the 80's? Do lower temps increase unit life?Doesnt the firmware have a 90 degree unit shutdown?

### Reply 10:
100c is when things like FETs start to short and cut through. Likewise I would not run chips at higher than 80c normally, I prefer to run things at 70 or less. The higher the temerature, the more unstable the chips will be in terms of current draw and the more likely a brief airflow fluctuation would burn them out.Your mileage may vary of course, but this is my opinion.

### Reply 11:
There is one other thing, once or twice an hour every couple hours, sometimes more. I get a red fault light on all three miners at the same time, sometimes it'll just be two miners. I thought maybe my Ethernet switch might be too cold as I have them in my garage. It's a 5 port Netgear ProSafe FS105. It states that it's operating temperature is between 32F - 104F. It's been freezing outside, but I seriously doubt that it's actually been down to 32F in my garage, especially with three miners throwing off so much heat. Nevertheless, I set up a small 250 watt heater pointed at the Ethernet switch. It sufficiently warms the switch without adding to much heat for the miners. But I'm still getting fault lights on all three miners and the kernel logs say, ""Fatal Error: network connection lost!"" They all eventually go back to green on their own, but this can't be normal. What makes me curious is that all this started when I switched from Slush to Bitcoin.com. Before switching to Bitcoin.com I never had any of these issues. Which is why I ask if any of this could be caused by the pool.

### Reply 12:
So, I have three S9s from the Novemeber batch, all three are 14Th/s. I haven't had any serious problems to speak of other than in the last 10 hours one of the boards has racked up 121,295 HW errors or 0.1076%. The percentage has actually dropped, it was at 0.12 The board continues to hash at 4,733.24 GH/s and everything seems normal with the pool I'm mining in, Bitcoin.com.The temps for all three boards are 74, 71, 67. The board with the errors is the one at 67.On the miner status page there are no ""x"" in the ASICS status section. Can something within the pool do this, or would this be a board problem.

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  },
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    ""hardware_name"": ""250 watt heater"",
    ""hardware_is_owned"": true
  }
]"
22821,"Date: 2018-11
Topic: Antminers doing better Accepted/Hour after a couple of restarts
### Original post:
Try pointing your miners to a real pool and not that nicehash junk and see if they act the same way, which I doubt they will.

### Reply 1:
I tried multiple pools and Nicehash was paying the best. If there are others that do better ROI, I'm game - but I also value my time and hopping around everywhere is too time-consuming. I'm always open to better options though. In fact, I was looking around just the other day and have been spending a little time talking to the guys in ckpool. But not sure about taking the risk of not getting frequent enough payouts to pay the power bill. I run my miners as a business and they have to pay for themselves - so still looking. I have 4 - 13.5T, 3 - 14T, 1 - 14.5T, 2 - L3+ (525GH/s @), and 2 - L3++ (580GH/s @) units running on Nicehash and am getting payouts, after fees, of 0.00555BTC per day at the moment (well, last payout). No fees (including miner fees) to do instant xfer to Coinbase - free xfer to Coinbase Pro - free conversion to $ - free xfer to the bank. All that has to be considered in the overall cost - plus the ease. What do you recommend that is better?

### Reply 2:
If you are using nicehash and your hashrate is being moved to different pools and pointed in different places the accepted shares is a pretty meaningless stat. Different pools have different difficulty targets which change the accepted shares. Hashrate will look like its going all over the place as you bounce around between ones. I recommended you getting on a stable pool to test for these reasons.

### Reply 3:
Is this typical? And more importantly - does it matter? I have been trying to look at things to give an indication of a miner having problems. I mine with Nicehash and the current speed is always all over the place - so that stat does no good to pay attention to. I use AwesomeMiner and it will tell me when a miner has ""died"" or has not had a work unit Accepted after a certain amount of time, but these are not always that useful. ""Dead"" yes - but sometimes AM and NH both show they are working - but the accepted rate or HW errors have blew up. So I started watching Accepted Per Hour rate to see how they are doing. My S9's seem to be doing a little better than 22A/H for 13.5T to 14.5T units. BUT, sometimes when they re-start - they may only end up at 16 or 18 A/H after a couple of hours. I restart them, usually once or twice and they'll get going again back in the 22+A/H range.So basically at this point - when one re-starts I will watch it's A/H rate for an hour or two - if it is under 22 - I'll restart it. Rinse and repeat until it goes over 22A/H. Twice now (over the last couple of weeks playing with this) I have gotten a 13.5T to go from mid 22A/H to over 25A/H and the same with a <rest of post truncated>

### Reply 4:
No i dont mean for profit, I mean as a control test to see if the miners act the same way on a standard pool, sorry I should have been more clear.

### Reply 5:
Oh, I see. My understanding of Nicehash is that the buyers bid on the amount they want to pay for xTH/s processing speed. They then give the specific pools and pool settings they want to use. When the seller's miner picks up work from Nicehash, Nicehash literally has the seller's miner hashing directly with the specified pool the buyer chose to mine at. If this is the case - then they are effectively mining at varying actual pools - with Nicehash acting as an intermediary. Plus, it seems like this has more to do with the miners to me. Like one of them will come up having higher HWE/H and a lower A/H accordingly - after a restart or two - the board with the higher HWE/H might be better and the A/H goes up as well. My suspicion is that it is at the board and chip level where some of them are operating more/less effectively from one restart to another - and that by restarting a few times - you will hit a better state of operation on the miner as a whole at some point and that this shows up best looking at the A/H rather than the TH/s or HWE rates. At least that's my take on it.

### Reply 6:
Yeah - that is a question I had about that too. However, my miners show a very consistent difficulty - it doesn't bounce around. You would think it would bounce around - but I suppose it has something to do with them being an intermediary? I questioned them on the difficulty a couple of months ago when they had an outage - and when they came back up - all my miners increased in the difficulty of the accepted shares. Since then and until now, my difficulty is 500K! But when they first connect, they connect at 1M, then after a few minutes, they scale back down to 500K. Anyway, they said they don't determine the difficulty - that the endpoint pools do. But I have never seen any of my miners change to anything else while mining. Used to be 128K before they jumped to 500K, which is what spurred me to contact them. Isn't the password on poo<rest of thread truncated>
","[
  {
    ""hardware_name"": ""13.5T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""14T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""14.5T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+ (525GH/s @)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3++ (580GH/s @)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  }
]"
23545,"Date: 2021-04
Topic: Firmware for Dragonmints T1's and Bimtain t9's
### Original post:
hi guysI am looking for 3rd party firmware to see if i can upgrade on my T1's and T9's respectively. I saw some old posts that were talking about using BrainsOs on the T1's and read that people were having issues with this. The T9's I have are not the pluses (T9+) and this firmware has bricked a couple of my units. I found some 3rd party websites but they are asking for BTC donations; more likely a scam site. open to any ideasThanks

### Reply 1:
For t1 firmware, there is a firmware share by someone here on the forum you can find the Dragonmint t1 firmware from here <link> was posted from here <link> use the firmware shared by Biffa here <link> for T9, I can't find any 3rd party firmware but if your purpose is to fix the brick t9 miners then there are some ways to try to unbrick them.Have you tried to flash it with an SD card using the ""t9+-SD Tools.zip"" I do not sure if it's compatible but you can try If not this one below is your last optionThis is the 2nd option but it needs a cable called ""USB to serial cable"" you can check the guide from here <link>

### Reply 2:
Hi, obviously I'm not visible enough ... I offer my mod for T9+ for free available here:<link> this is a mod, it unlocks the firmware, for this, you must first install a firmware before 2019 (if this is not already the case), then subsequently, update via the interface of the miner with my mod (929kb archive only).You can start tuning at 650mhz and 840mv, the miner will run cooler, less power, and around 12TH this mod is completely free;)

","[
  {
    ""hardware_name"": ""T1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB to serial cable"",
    ""hardware_is_owned"": false
  }
]"
22434,"Date: 2018-03
Topic: Brand new S9... 1 board..1/2 chain DOA any suggestions
### Original post:
Weird that only half the chips are <truncated> oooooooo oooooooo <truncated> oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo <truncated> oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo ooooooowell <truncated> its obviously a defective board......DOA and will be returned RMA.

### Reply 1:
Have you let it run for a while so it gets nice and toasty, reboot it, and see if that helps?

### Reply 2:
You can use your guaranty, if you ordered it from Bitmain. What PSU are you using? Have you tried maybe switching the PSU with some other type of it. And is your miner on 220v?

### Reply 3:
Yes I use 220v and Bitmain PSU...yes I swapped/tried with a known good working Bitmain PSU's.....and re flashed Firmware.....and swapped controller cables between affected board and working one.Yes unit was well warmed up and reset a few times.I gave it a stern verbal scolding expressing my <truncated> just a plain old DOA board....My first DOA..The real piss off is I can't sent it back until Bitmain responds to the damn ticket...

### Reply 4:
This just happened to me, miner was hashing at 9.5 TH/s and one of the small red LED light on the board was not lit.The troubleshooting sequence was1. Unplug all sockets from PSU to S9 and replug them in making sure they are tight.2. Try another PSU3. Reset the S9 and re-load firmwareNone of it worked. So had to create a repair ticket and sent it to Cali for repairs. The complete unit for S9 needs to be returned for warranty repairs. Bitmain also stated that it will take a week to repair.Warranty steps were pretty <truncated> I will get it back soon.!

### Reply 5:
So DHL charged me CDN $300.00 to send a single S9 back to Hong Kong for <truncated> we can't use the Bitmain coupons for shipping.

### Reply 6:
Why did you ship it to Hong Kong and not California? If you are in Canada shipping to Cali must be cheaper. I am in the pacific northwest and I can ship a single s9 to the repair depot for like $30

### Reply 7:
For what its worth, I had a T9 recently fail. Shipped it to California for about $30 via USPS, and received a new one directly from China about 3 weeks later (was notified within 2, but it takes a week or so to get here).

","[
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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9"",
    ""hardware_is_owned"": true
  }
]"
22170,"Date: 2018-01
Topic: Antminer overclocking advice
### Original post:
I picked up an old s5 a while back. Right now I have it set at 375, getting 1.3-1.4 GH/s. One chain seems to max out at about 57 degrees, and the other one about 10 degrees cooler (chain 1 is the hotter of the two). Is the difference in heat normal? Or should I maybe pull it apart and give it a good cleaning?Right now I am running it with the stock fan, with the blue wire removed to disable PWN as I heard stories of them frying when they loose internet. Im assuming they fixed that via firmware, but I prefer the fan maxed anyway. I also have one of these on order that will arrive tomoorw for the pull on a push/pull setup Looks like it should work pretty well. <link> question is when overclocking, is my main concern to watch the heat and hardware errors and if they are acceptable I can still crank it up?EDIT: Im using a 980 watt server power supply model number ""DPS980CBA""

","[
  {
    ""hardware_name"": ""s5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""stock fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""980 watt server power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""DPS980CBA"",
    ""hardware_is_owned"": true
  }
]"
21091,"Date: 2016-07
Topic: Problem with antminer S4
### Original post:
Good afternoon sorry for the spelling am from Venezuela and I have a antminer S4 and the problem is that it comes on but did not grab the Internet to connect I'm going crazy not to do please help me.

### Reply 1:
This topic belongs to mining section.Now coming on to your query, you can plug the antminer to your PC in a second network card and enable internet connection sharing. That will work if you have an always on PC. From what I can interpret is that your primary firewall is blocking its <truncated> you can check out Dogie's Comprehensive Bitmain Antminer S4 Setup here: <link>

### Reply 2:
You do need to move this topic to the mining section. In the mean time while you do that, you might want to check all the setting on your system and verify that it is even being recognized by the network. I would start there.

### Reply 3:
Is it plugged into the router directly by an ethernet cable. I was recently told that patch ethernet cables are needed (which are ones specialised for routerpc transfer instead of pcpc transfer). Also, if the ethernet cable or internet connection are incapable of transferring sufficient data the miner will not start for protection to it so it isn't damaged!

","[
  {
    ""hardware_name"": ""antminer S4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""second network card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ethernet cable"",
    ""hardware_is_owned"": false
  }
]"
23154,"Date: 2019-12
Topic: Hacking miners, general info on troubleshooting.
### Original post:
KNC Titan and Neptune miners can be pretty reliable units, but as shipped from the factory they have a few flaws you need to be aware of:First: Watch the power draw: Running all four dies at 300mhz for Titans or 600mhz for Neptunes pushes the molex PCIe connectors to the limits. If the connector gets overloaded it will warm up, then heat up, then pins will start to delaminate from the board or go high resistance from the heat. When this happens the remaining pins take more heat, until either the cube shuts down or the grounds lift in which case all hell breaks loose, the ribbon cable becomes the ground, and the cube, controller, and several other cubes are destroyed. Burned plugs are fixable (see use lots of pre-heat), but dead-shorted cubes are not.A second problem is a cube that shuts down the power supply. This is normally caused by blown power FETs on an internal DC-DC power supply. Trying to force more current in the cube can cause components to burn, which if the cube is full of dust bunnies will cause the nice fire being blown out the front by the very handy fan. This can also be fixed, but cleaning a burned cube is a mess.Another issue is a dead controller, where the green <rest of post truncated>

### Reply 1:
General information:This is information that applies to pretty much any type of miner. Keep the die temperatures on the hashing engines below 45c for best results. As dies get hotter they draw a lot more current as they hash faster, it's not a 1-1 relationship. Likewise as they get hotter the chances a die will short increase exponentionally. So run it a bit slower, and life will be longer. Run super fast and be sure to budget in repairs.Never plug or unplug any connector with power on. This includes control cables as well as power cables. The reason is mining companies design products for minimal manufacturing costs (cheap), and sometimes things like drivers and static sensitive buffers are left out of the design. The voltage and signal spikes caused by unplugging or plugging can blow drivers, or FPGA controllers being used to control miners.Likewise unplugging or plugging a PCIe power connector can cause a spark at the points, putting a small burn into the plug. Over time that can cause increased resistance, which leads to the plug warming up, then heating up, then melting with the usual fireworks.Try to keep DC-DC temperatures below 80c or so. Going much about 90c on a DC-DC wil<rest of post truncated>

### Reply 2:
Avalon has two types of miners still in use these days, the A6 series and the 721/741 series. Here are some thoughts:If the miner is running slow or not hashing at full speed, check the voltage at the power supplies. The 12 volt rail voltage is displayed in the interface, it should be around 12 volts. If it's 11.5, the miner will slow itself down to keep from burning the plugs. If it's 10.5 the miner will be a lot slower. Replace the supply or use two supplies (one per side)With the miner disconnected, a flashing green light on the miner means idle, a flashing blue light means mining, and a flashing red light means a problem. No light is equally weird and could indicate a problem with the on-board MCU.On the A6 miners at least, the 4 pin plug to the serial board needs to be in the left socket as viewed from the rear.Another item to check is fan direction: The fan should always blow air *out* of the miner (air comes from the fan). This is because pulling a fluid with a pump is always easier than trying to *push* the fluid. In this case the fluid is air, and trying to push it just creates pockets of turbulence that reduces cooling ability. So always make sure the fan is set to pull a<rest of post truncated>

### Reply 3:
Ok, after answering the same question a bunch of times about Avalon things, NotFuzzyWarm pointed out something: There really isn't a good thread for general information about miners.Common information like why do they run, why do they shoot flames out the front from time to time, and of course why did the power plugs melt on them. Or how about tips on making them run well, what to do with heat (send it out a window....), and common simple troubleshooting techniques that can get people mining again?Since I fix these things and figure stuff out the old fashioned way (probes and a general understanding) I thought I would use this thread to post some of my findings and let others contribute to general knowledge. It will take me a few days to get stuff written down, so be patient and check back from time to time. If it gets good enough maybe it can be locked to the top page.Anyway, on with the show. I'll update this thread regularly with new information as I learn it, hopefully this will help people.

### Reply 4:
Antminers are interesting little devices, especially the R4's. I know people have had issues with boards not starting, here is one fix that works. Heat the incoming air <rest of thread truncated>
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    ""hardware_name"": ""KNC Titan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Neptune miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""molex PCIe connectors"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power FETs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""internal DC-DC power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon A6 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 721/741 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminers R4"",
    ""hardware_is_owned"": false
  }
]"
4199,"Date: 2012-10
Topic: Building ASICs
### Original post:
I know next to nothing about computer hardware, but doesn't creating specialized computing devices require an industrial operation? As in a teams of trained experts, large specialized tools, specific materials. How do the no names supposedly creating bitcoin ASICs do it? Am I overestimating the requirements for mass producing computers?

### Reply 1:
What you've said is true. We really don't know how BFL has developed a fully custom ASIC miner, but the other Bitcoin ASIC manufacturer's aren't using fully custom chips, which from what I gather cost much less to develop.

### Reply 2:
The term is full custom, not fully custom. Putting neon lights in your computer case makes it ""fully custom"". Writing your own software to draw the transistors -- like Intel and AMD do -- makes your chip ""full custom"".BFL has not announced a full custom chip.

### Reply 3:
Lets clear up some terms.An ASIC is a Application Specific Integrated Circuit. Most chips could be considered ASICs, although the ""application"" might be something very vague or wide, like running x86 code in the case of an x86 CPU. Technically it could be called an ASIC. A bitcoin ASIC by all reasonable definitions would be a chip designed specifically for bitcoin mining, and as such its a ""custom"" chip. By contrast an FPGA is a field programmable gate array, its a chip that can be programmed to act as whatever you want by just loading a different bitstream.""Full custom"" has little meaning, but usually when a company says it does a full custom asic, it means they not only design the chip, but also design individual custom transistors, rather than relying on standard cell libraries provided by the foundry. More typical for asic's is to use those libraries. Think of the difference as between using C++ instead of assembler. In both cases you end up with custom code (or hardware) specific for your application, but one is a lot harder and lower level than the other but might yield slightly better results because you can optimize more. I imagine AMD and Intel will usually do ""full custom<rest of post truncated>

### Reply 4:
I don't even think Intel and AMD do this in that way.They propably make custom libraries, but designing something like a whole cpu from scratch (500~1000 million transistors) would be crazy.There is abstraction on several levels. Transistors are made into subcomponents that are put together into functional units which can be part of bigger pieces.

### Reply 5:
Yes they have.<link>

### Reply 6:
So how about the required design?SHA-256 is a pretty simple compared to the functionality of a CPU.I can imagine they can get a lot of performance from making simple units and repeating them on die, maybe a bit like shaders on a GPU but without all the stuff for graphics like rops.This would make designing it more feasable.

### Reply 7:
A bitcoin asic is probably about as ""simple"" as any asic would get. Almost no IO, and very simple, easy to validate logic, incomparable to say cpu's or gpu'sThat doesnt change the fact that building any asic is pretty expensive, particularly on a relatively modern process, mostly because of the maskset.I see no reason why BFL wouldnt be able to pull it off though. Aside from the money and tools, all it takes for the design is one or two experienced guys and a couple of weeks/months. The production you simply outsource to some taiwanese or chinese foundry.

### Reply 8:
Intel hasn't done it inhouse for years, they contract through tektronics - same a motorola and pretty much everyone else. ATI used to grow their own - AMD used mitsubishi to grow silicon... not sure if AMD taking over ATI was to get the manufacturing in house again or what.

### Reply 9:
?Intel is one of the largest fab operators:<link> just makes test equipment and has nothing to do with this. Perhaps you meant ASML, which is a big supplier of fab equipment to just about any fab, but that doesnt change the fact intel owns and operates its own fabs.Growing silicon? No one is talking about the production of raw wafers here. And you got every one of your ""facts"" wrong. ATI was a fabless design house that used (and still uses) TSMC for wafer processing and production. AMD used to have its own fabs in Desden, but spun them off in to a separate company called Globalfoundries.

### Reply 10:
I hope that BFL comes through with their ASICs, but I admit I am not totally sold that they have done it and will deliver as promised in a reasonable time frame.I have some BTC in mining operations that are waiting for the BFL ASICs, but not much. If they come through I will go crazy buying interests in companies with pre-orders on the first day they start being delivered. I'd probably order as many rigs as they can deliver... but I'd be late, because I wasn't and still am not sold enough that the technology will be delivered as promised to pre-order. If BFL comes through, those who took what I consider to be the risk of<rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitcoin ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFL ASICs"",
    ""hardware_is_owned"": true
  }
]"
17176,"Date: 2012-06
Topic: .5 bounty Need help setting up cg miner for my BFL single
### Original post:
I have never used cgminer I've always used guiminer for my 6970 card I have it was quite simple, If someones willing to help me setup cgminer for my bfl single I will gladly give .5 bitcoins send me a PM or post thanks!EDIT: Win 7 64 bit and will bump the bounty to .7 if its quick and easy.

### Reply 1:
make a .bat file withcd c:\ (path to cgminer directory)cgminer -o <link> pool:pool port -u username -p password -S COM3 --disable-gpucom port may be different but usually is COM3You can look up your com port in device manager. did you get the driver installed?Also, the bfl alphaminer will tell you COM port number.

","[
  {
    ""hardware_name"": ""6970 card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFL single"",
    ""hardware_is_owned"": true
  }
]"
23304,"Date: 2020-07
Topic: What is the Recommended PCB Temp. & Chip Temp. for Antminer?
### Original post:
Hello Guys,Hope you are doing well. Can you please clear my doubts?What is the recommended temperature for PCB & Chip for Antminer? Is it the same temperature for all Antminer models?Recently, I purchased 2 units for T17+ 64THI use Awesomeminer for remote monitoring. Awesome miner shows me both PCB & Chip temperaturesit shows highest PCB temperature as 51C, and that miner shows Chip temperature as 78C<link> to Awesomeminer, if chip temperature goes 80C or above, then it turns yellowDoes it mean that going 80C or above for chip temperature is dangerous?Also, do you think the miner firmware is reliable? because I had experience with Antminer S9 model in the past where the hash board got fried, and the status page was showing 200C for the boardI think it was my mistake that I replaced the miner fan with another fan to lower noise level, when I woke up the next day, the fan was not spinning, but the firmware should have stopped mining once 80C was crossed right? I feel there is a delay for between temperature check, and fan RPM adjustment, and by the time firmware checks the temperature, then it is game over for the hash board before adjusting fan RPM.

### Reply 1:
<link> shows the normal temperature of the miners:Antminer Temperature in degree Celsius S9 series excl. S9i, S9j, S9-Hydro Range: 65 - 115Chip max. 135PCB max. 90S9iPCB max. 85S9j and S9-HydroPCB max. 95T9 series excl. T9+ Range: 65 - 115 Chip max. 135PCB max. 90T9+ Chip max. 125 PCB max. 95L3Range: 30 - 85PCB max. 85L3+ and L3++Range: 30 - 85PCB max. 90D3Range: 35 - 80PCB max. 85D5PCB max.85A3 Chip max. 115 PCB max. 85X3 Chip max. 127 PCB max. 80B3 Chip max. 127PCB max. 80V9 Range: 30 - 70PCB max. 80Z9 MiniChip max. 125PCB max. 80Z9PCB max. 80E3PCB max. 65DR3/DR5PCB max. 85S15PCB max. 80S11PCB max. 95T15PCB max. 80S17/S17 Pro/T17PCB max. 75S9 SE/S9kPCB max. 85S17e/T17e/S17+PCB max. 80T17+PCB max. 75

### Reply 2:
It won't stop mining at 80c, not even at 100c, or at least this is what the default firmware allowes you to go to, since S9 has a max temp of 135c 80c is pretty cool, and i have seen those S9 run above 100c for a very long time without a hitch, now going 200c is a different story, I believe that some of these custom firmware have an option to disable the fan-check function in cgminer use for immersion cooling) where fans are unplugged anyway, so maybe it was activated by default or you have mistakenly activated it? hard to tell, you have to check with the firmware devs to confirm that.Now back to your T17e it does say ""PCB max. 80"" but that is far form reality, all these 17 series have a terrible solder that will fall-off with the slightest increase in temps, there is no exact figure that these gears will run safe, but the cooler the better, i believe your readings of ""PCB temperature as 51C"" is not bad at all.

","[
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    ""hardware_name"": ""Antminer S9"",
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  },
  {
    ""hardware_name"": ""S9 series excl. S9i, S9j, S9-Hydro"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9j and S9-Hydro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T9 series excl. T9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3+ and L3++"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""D3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""D5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""X3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""B3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""V9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Z9 Mini"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Z9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""E3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DR3/DR5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S11"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17/S17 Pro/T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 SE/S9k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17e/T17e/S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": false
  }
]"
13780,"Date: 2022-07
Topic: Python3 CPU mining
### Original post:
I wish to write a CPU Bitcoin mining program in pure python3. At my github page I have posted what I have so far.<link> able to connect to my RPC and get the getblocktemplate information. I just don't know where to go from there. Any help or guidance would be appreciated.I tried implementing pyminer.py and pyminer3.py but they both use the old getwork RPC API.Here is the website for the complete RPC API reference.<link>

### Reply 1:
What are you mining on CPU? Bitcoin can't be mined efficiently without ASICs.

### Reply 2:
I love your idea!! I am working on a project with the same goal. solo-bitcoin.com . We are working towards the same thing. To prove a bitcoin block can still be solved on a CPU or smaller hardware. I think we will rock the Bitcoin world once we do. We should work together on this? what was once thought to be impossible . I know we can make it happen. Nothing is impossible.

### Reply 3:
No one here can/should say that it is impossible to find a block using a CPU-based miner.It *is* however very very very very very very very very very very very very very very very very very very very very very very unlikely.Even using the CompacF USB ASIC stick miner gives you an at least several-billion x more chance. Probably being the 1st person ever to observe a Proton decay event is more likely (google it...)But, yes -- it IS possible.

### Reply 4:
Can you tell us a little more about the stated goal of your project? I like the idea, however impractical, but wonder if there's a use for such a thing beyond attempting the daunting task of mining a Bitcoin block with a CPU. Maybe you're planning to run this in the background of a website and utilize viewer hardware to mine some BTC? Is your goal to have this be pooled mining, or solo mining? Given the long odds of CPU mining a Bitcoin block, I assume that you have some other purpose for this outside of mining Bitcoin on your CPU. Given it's near impossibility, I wonder if you're aware of the odds and doing this for some other reason.

### Reply 5:
Well the main problem is that you require millions of CPU cores to match a current single ASIC miner.With the complaints about energy used for Bitcoin PoW, it puts into perspective what a waste ever even trying to CPU (or GPU) mine bitcoin is.

### Reply 6:
Interesting project, however you're some 10 years late.Now, if you do it for fun and your own learning, being aware about the fact it's useless, no problem at all.I remember there was a bitcoin miner made for Commodore 64. I didn't look into it, but who knows, maybe it can help: <link> (sorry if it doesn't)

### Reply 7:
forget the cpu thing, but for educational purpose it will be a good starting point to compare the old situation with the curent one:to start here is the old method of gbt:<link> here the new one:<link> out the diference or better learn the whole bitcoin system (that will take you busy for a while).@kitkatz: for you it will be the same way.

### Reply 8:
Have a look here:<link> basically what you are trying to do:

### Reply 9:
If that is the case then OP should re-implement the miner in WebAssembly and JS, because 1) Python can't run in browser scripts and 2) even if it could, it would be much more inefficient than if it was written in assembly, or some pseudoassembly language like C [or WebAssembly].

","[
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    ""hardware_name"": ""ASICs"",
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  },
  {
    ""hardware_name"": ""CompacF USB ASIC stick miner"",
    ""hardware_is_owned"": false
  },
  {
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22770,"Date: 2018-10
Topic: Question about ambient temp with 15 x S9s
### Original post:
I'm very new to the mining scene, ran 1 S9 in my 100sq/ft ""server"" room at my office for about a week got excited and bought 14 more. My ""server"" room has the circuitry for the 220v connections as well as the bandwidth, what I underestimated is the heat. 1 S9 made no difference to the ambient temp, but I plugged in 5 today and wow the temp skyrocketed. After 4 hours my chips had operating temps averaging 77 degrees but I'd say room ambient temp was around 30 degrees. Tomorrow I plan to start up the other 10 units for the total of 15 running simultaneously. I imagine the room temp will skyrocket to over 40 degrees. The room has a medium sized A/C unit but other than that there is no ventilation whatsoever. I'm getting the feeling that I've bitten off more than i can chew, will this be a problem or can these units survive in these temps? Luckily I can easily make modification to the room and one of the walls goes directly to the outside so adding an exhaust fan is possible, I'd just rather not cut a hole in my building...

### Reply 1:
Unfortunately AC is not the way to go. Miners are designed to use ambient air, and I've had my miners running when it was a bit hot out at 90+ degrees F and they were still running fine. To run all your miners you'll need to figure out where you can put them and get outside air circulating through the mine.

### Reply 2:
exhausting the hot air is critical to having a successful mining setup. A/C will kill your profits, its all about removing the heat as fast as you can.

### Reply 3:
Save yourself the possibly burnt out boards, as they can be finicky as is.I'm not sure what your overall building set up is. but you're going to have to put a hole in the wall no matter what to run all of them. Here's the kicker maybe 2 so that you can dusct intake air as well (don't forget the filter) for the miners and the existing equipment for the server room. The plus side to making these modifications is that you probably won't need the AC at all, with the increased constant airflow through the room. Seeing as you like to jump in I would oversize the air exhaust and intake, just in case you want to go bigger.

","[
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    ""hardware_name"": ""A/C unit"",
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  },
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    ""hardware_name"": ""exhaust fan"",
    ""hardware_is_owned"": false
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]"
11826,"Date: 2012-03
Topic: Saving settings
### Original post:
Is there a step I'm missing to save settings? I use S,W,Enter from the menu to save the configuration as cgminer.conf but it does not appear to save my settings in the cgminer.conf file. It just looks like below. Also when I enter in values and save, they do not take when I start up with cgminer -c <truncated> : [{""url"" : ""x"",""user"" : ""x"",""pass"" : ""x""},{""url"" : ""x"",""user"" : ""x,""pass"" : ""x""},{""url"" : ""x"",""user"" : ""x"",""pass"" : ""x""},{""url"" : ""x"",""user"" : ""x"",""pass"" : ""x""}],""intensity"" : ""d"",""vectors"" : ""2"",""worksize"" : ""128"",""kernel"" : <truncated> : ""0-0"",""gpu-fan"" : <truncated> : ""0"",""gpu-memdiff"" : ""0"",""gpu-powertune"" : ""0"",""gpu-vddc"" : <truncated> : <truncated> : ""85"",""temp-target"" : ""75"",""api-port"" : ""4028"",""expiry"" : <truncated> : ""7"",""gpu-platform"" : ""0"",""gpu-threads"" : ""2"",""log"" : ""5"",""queue"" : ""0"",""retry-pause"" : ""5"",""scan-time"" : <truncated> : ""3"",""shares"" : ""0"",""kernel-path"" : ""/usr/local/bin""}

",[]
23626,"Date: 2021-07
Topic: antminer S17, Failed to detect ASIC chips.
### Original post:
[2021/07/12 08:09:02] INFO: Setting freq to 50 Mhz <truncated> 08:09:13] INFO: Detected 256 Mb of RAM[2021/07/12 08:09:13] INFO: Switching to manual fan control (30 %)[2021/07/12 08:09:13] INFO: Checking fans[2021/07/12 08:09:14] INFO: fan[0] - OK[2021/07/12 08:09:14] INFO: fan[1] - OK[2021/07/12 08:09:14] INFO: fan[2] - OK[2021/07/12 08:09:14] INFO: fan[3] - OK[2021/07/12 08:09:20] INFO: Power ON[2021/07/12 08:09:23] INFO: Starting FPGA queue[2021/07/12 08:09:23] INFO: Initializing hash boards[2021/07/12 08:09:23] INFO: chain[2] - <truncated> 08:09:23] INFO: chain[1] - <truncated> 08:09:23] INFO: chain[0] - <truncated> 08:09:38] INFO: chain[2] - 48 chips detected[2021/07/12 08:09:39] INFO: chain[1] - 48 chips detected[2021/07/12 08:09:42] WARN: chain[0] - 40 of 48 chips detected[2021/07/12 08:09:53] WARN: chain[0] - 40 of 48 chips detected[2021/07/12 08:10:05] WARN: chain[0] - 40 of 48 chips detected[2021/07/12 08:10:05] ERROR: <truncated> chain[0] - Failed to detect ASIC chips[2021/07/12 08:10:05] INFO: chain[0] - Shutting down the chain[2021/07/12 08:10:05] ERROR: <truncated> chain[0] - Initialization failed[2021/07/12 08:10:09] INFO: Start-up temperature is 27 C (min -15 C)[202<rest of post truncated>

### Reply 1:
No, you can't configure with software the amount of ASIC chips that are in use.

### Reply 2:
there are some people that may work on it for you. you likely need to reflow some chips.

### Reply 3:
The chips are in series, all of them need to be working, you seem to be having an issue with chip number 41, given the fact that this is a 17 model, chances are the chip lost contact with the board, you will need some tools and skills to fix that, or send it somewhere for repair.

","[
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    ""hardware_name"": ""ASIC chips"",
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  },
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    ""hardware_name"": ""RAM"",
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  },
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    ""hardware_name"": ""fan"",
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    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""hash boards"",
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]"
16570,"Date: 2023-08
Topic: USB Mining > ASIC
### Original post:
Hi dear communityalright after i post about the USB mining many people advice me to buy ASICWhere are you buying it?is there a tutorial for it?To cover electricity and see some good earnings how many i need as a start?

### Reply 1:
This belongs to mining board, move it to mining board. <link> should be able to buy ASIC machines directly from the company that is manufacturing the ASIC machines. The best among them that I know is Bitmain Antminer. You can buy Bitmain Antminer directly on their official website: <link>

### Reply 2:
Before I lay my hands on any asic miner I spend time watching YouTube videos for tutorials, I will suggest you do the same because you are also a newbie like I was, it's very complicated to set up an asic miner and start mining. You also need to know how much your electricity costs per month, if it's already high you should stay away from mining and start buying Bitcoin instead. The best place to buy Asic miners is their official platforms like Bitmain <link> is more safer than any other places, like Alibaba and other third-party websites.

### Reply 3:
USB miners like Gekkoscience Newpac or Compac F for example, are ASICs, they have a Bitmain chip.It depends on several things. Where are you located? For example, if you're in the USA, you might want to order from an American reseller, to avoid excessive import taxes and shipping costs.Generally speaking, ordering directly from the manufacturer is a good idea, but it doesn't guarantee easy delivery. Bitmain, for example, is notorious for sometimes making its customers wait months before shipping their orders. You can browse the forum, it's full of good addresses and topics on this subject. You can also order ASICs from reputable forum members, mikeywith has a long-standing excellent reputation, for example. It depends on the price of your kw/h. And it also depends on the purchase price of your ASICs. With this data, you can calculate your ROI time and have a more or less accurate forecast (the difficulty changes every two weeks or so, so forecasts are never 100% guaranteed).

### Reply 4:
You can actually buy to manufacturer's website like example bitmain Avalon or micro bt but beware you need double check it first before buy there is a bunch of scammers out there and some of it create an identical website and made the domain almost same and they created google ads so can put in top of search engine wait wait dont do double check do triple checkhere the example of the site <link> last thing before buy you need consider about profitability the cost of hardware electricity and etc

### Reply 5:
There are tools to calculate stuff like this such as whattomine, assuming you know how to find out the necessary calculation variables such as hash rate, and so on as mentioned above. Treat it as a prediction since the variables will likely change when you start your mining activity. It is really hard to answer since you don't provide anything concrete to calculate. You'll likely get better suggestions if you can provide more data imo.

### Reply 6:
New modern asics are not yet mining at a loss even at 10 cents per kilowatt, but this greatly increases the payback period of asics or makes it impossible without an increase in the price of bitcoin.It is necessary to calculate well how much money you need to pay for electricity if the miner is not going to sell the received bitcoins now.

### Reply 7:
For mining on ASICs, a beginner will first need to consult a good electrician in order to calculate the free power of electricity for mining and not burn down his house or other premises. Large power consumption already requires different control and knowledge than a few GPU farms on a balcony.

### Reply 8:
I will advice you do some research on your electricity first, are you the one paying for electricity in your house? How much are you paying per KW?I think it's better to start with one miner first, you will be able to learn how to configure the miner to a mining pool like Nicehash or others, for a newbie it will first look impossible, I will share you a YouTube video where you can watch and learn, and you can also watch many others on YouTube, just type what type of video you want and you will get tutorial videos.<link> others have tell you about bitmain's official website I think that's the best place to buy your Asic miner, they have a warranty too.

### Reply 9:
If he uses a USB miner, he will not notice an increase in electricity costs. With such an ASIC, the probability of catching a block is only possible in theory, but this is a solution for quiet residential mining. And for big chances, you need to watch asics for solo mining.

","[
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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Bitmain Antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gekkoscience Newpac"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB miner"",
    ""hardware_is_owned"": true
  }
]"
11957,"Date: 2012-07
Topic: Best Mining software and OS to use with BFL Singles
### Original post:
I am putting together a mining rig based on 10 BFL Singles. I know everyone probably has varying views but I wanted to solicit opinions on what the best software/OS is to run these efficiently is. I am moderately proficient in Linux and I could format my workstation with either windows 7 or Ubuntu. I am looking for the easiest to config and maintain. I just want them to run and mine and I do not need to do anything fancyYour thoughts...David

### Reply 1:
Ubuntu with CGMiner. Nothing fancy, but works very well.

### Reply 2:
Whatever OS you are most familiar with, they should all get the same hashes. I don't think anyone will argue cgminer is the best for singles. Keeping them cool seems to be the only way to get anything more from them.

### Reply 3:
Make sure you use the EasyMiner 1.2 beta to auto-tune each Single for the best firmware, tho I've heard of people still having to drop down 1 or sometimes 2 firmwares from the auto-selected to prevent throttling. Of course, this will have to be done on a Windows box, but the mining itself can be done on any computer.

### Reply 4:
I use MPBM <link> for my FPGAs on Debian. All you need is python then do a git clone and add your BFL workers.What I personally like about MPBM is the web interface and API and management of multiple pools whether it's for backup or distributing by hashrate or percentage.

### Reply 5:
I agree with this statement. I used ufasoft on Windows for a few weeks, switched to CGMiner last week and have seen significant performance improvements. Still on Windows so that I can easily run EasyMiner to tweak new units.

### Reply 6:
Agree as well. At least have a spare windows machine that you can use to test/re-flash them. I mine with cgminer/bfgminer on OSX 10.7.4 using 5 singles, so what ever OS you are comfortable with should be supported.

### Reply 7:
+1 for MPBM on linux, it's really fantastic. The management interface is very easy to use and you can access from anywhere over <link> out of the box.As for throttling, ambient temp and airflow make a huge difference, so keep them in a cold room or blow some cold A/C on them if you can, and duct away the warm exhaust.

","[
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    ""hardware_name"": ""BFL Singles"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Windows box"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Windows machine"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""OSX 10.7.4"",
    ""hardware_is_owned"": true
  }
]"
16470,"Date: 2023-04
Topic: Mine a total of 598
### Original post:
Bitcoin miner CleanSpark mined a total of 598 BTC in March alone while setting up new operations in Washington! This is amazing, I wonder what instruments is applying to cash up such a big fish. <link>

### Reply 1:
Cleanspark are saying on their website that they use 100% green energy to mine BitcoinI wonder if it's true or not. I am always sceptical with this kind of affirmations.But yeah, with an hashrate of 6.7 Eh/s, they should have a lot of blocks

### Reply 2:
Washington has a lot of hydropower, which (in general) is one of the cheapest energy sources. So it makes perfect sense to use it.

### Reply 3:
Washington Expansion. The Washington expansion is a passively cooled data center consisting of four primary buildings. Once fully complete, the expansion will hold about 15,000 Antminer S19j Pro+ machines. Total capacity in Washington is expected to be 86MW, the majority of which is sourced from low-carbon, on-grid energy. Building 1 is complete and ready for miners. Racks are currently being installed in Building 2. The foundation was recently poured for Building 3, while concrete deliveries are imminent for Building 4. Scott Garrison, vice president of business development, is leading the expansion.what is low-carbon, on-grid energy in practice?

### Reply 4:
Could be 100% hydro. And understating it as low-carbon, on-grid energy just in case the grid feeds them some power from a gas plant occasionally .8eh now and 16eh later.Grow we must.

","[
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    ""hardware_name"": ""Antminer S19j Pro+"",
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]"
13715,"Date: 2021-09
Topic: Mining monitoring softwares
### Original post:
Hello,What is the best software that can monitor miners (AntMiner) efficiently, in example if the there are hardware problems, over heating, network disconnection etc. and alert the admin via mobile app or similar? Having detailed system alerts to mobile phone is an essential feature for me.

### Reply 1:
AwesomeMiner <link> I've used it for several years for monitoring my farm and it can do all you ask about.

### Reply 2:
Try Mineitor , First month is free to test <link> have 24/7 full support. and features that is unique to us. like Remote-browser <truncated> , ...

### Reply 3:
I tried AwesomeMiner and it is pretty ok. However it seems to lack a really important feature. There is no other way to get mobile alerts than email or SMS. I would imagine a mobile APP would be a better way to go, where you could also monitor the services. If you are sleeping your phone on silent mode and receive an SMS, there is no way you will find out that something what wrong until the morning. I know that it is possible to somehow bypass this with Apple phones, but I am using Android. Another option I guess would be configuring Gmail on my phone to give custom alert, but I doubt that it would still not bypass the Android silent mode. Anyone got any ideas how to make this happen?

### Reply 4:
In Mineitor it is also possible configure receive alerts in telegram and web push notifications.Also it is possible to create customized alerts with personalized conditions. Telegram alerts is what you're looking for

### Reply 5:
If you master the use of AM or any other monitoring software, then you probably won't need an instant/mobile notification of any kind, the software itself can do all you can do at night, it can reboot the miner, change mining profile, increase/decrease fan speed and basically everything you can perform remotely. But if you still need email notification while your phone is in silent mode then you can use ""Tasker"" App, I believe you can make an exception for a single email address (sender) to override/bypass the silent mode.

### Reply 6:
I like (and use Mineitor) for my home farm. I don't have all the fancy alerts because my master console is open most of the time and I just see alerts pop up when they happen.About the only alarm I want to wake up for is actually the fire alarm in case something bursts into flames and that won't be Mineitor. Otherwise, I will get to it when I wake up in the morning.The automated recovery features are nice! bump it, kick it, hit it with a wrench (the last one is my favorite setting!)

### Reply 7:
Thanks for sharing your experience! Do you run it on a server at the farm location and VPN to it or other way round - do you have the mining site router VPN to your location? I am in the process of setting up a small farm at a remote location (no fixed-line Internet, micowave or mobile 4G only) and it would be great to get some advice on how to set the whole thing properly.

### Reply 8:
The Pushover App handles this easily.

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    ""hardware_name"": ""Apple phones"",
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    ""hardware_name"": ""Android"",
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4102,"Date: 2012-06
Topic: Here is how to compensate for bitstream developers *alternative version*
### Original post:
Yeah, I shamelessly stole the topic title from mrb, but I didn't had the creativity to find another one. mrb can sue me for copyright if he wants, just PM me. More seriously, I'm really interested in the work of eldentyrell, and after reading some reactions, I think I have an interesting proposition. One thing that bothers me is that, all the time eldentyrell will spent on his server, to be sure he get paid correctly, he will not be developing a better bitstream. It's bad management of our human resources here. You take an awesome bitstream developer, and you convert it to a server manager where a lot of people can do this job. So, I'm asking to the community here. Is it possible to create a pool-like server for exceptional contributors? The idea is simple. Take eldentyrell idea of a server, but apply it for every exceptional contributors. The server could be managed by a group of person from the community, or even maybe the currently pool managers of existing big pool (like Deepbit, Slush, etc.). This way, exceptional contributors, like eldentyrell, could simply submit their project to this server, where the server managers handle the rest. I suggest this because I think it could <rest of post truncated>

### Reply 1:
i like it. i like it alot. though of course who manages the pool would be a big decision given the community wide effect it would have. but i personally would happily send a portion of my hash power to such a pool to support contiuned software dev.of course, a problem i see is what if, for example, i'm sending 5% of my hash power, but i don't use CGminer (i don't currently. the initial config makes my head hurt so i haven't hunkered down and done it.) in that scenario, it seems somewhat unfair for my hash power to go to paying for something i'm not using/supporting. i still like the overall concept - just a potential issue i see.

### Reply 2:
And that server will be DDOS-ed instantly....

### Reply 3:
and that isn't a problem with ET's current system? there are ways to defend against it.

### Reply 4:
Yeah, like any other pool server. But even if pools are centralized, they're still up and hashing. If you don't use it, you don't pay for it. Each software case will probably be different, but let's say your current pool have a detection mode to detect which miner is currently used. If you use CGMiner, you send a little part of your MH to the contributor pool. If you don't, you don't send any MH to the contributor pool.I don't know if it can be done technically, that's why I'm starting this topic. See this as a sort of <truncated> people pay after with what they produce. Or maybe people could pledge shares instead of Bitcoins.

### Reply 5:
And with a good miner software you will never notice the DDOS as it will go to your backup pool(s) just about the instant it happens here you get screwed when your only means of delivering your shares is gone..

### Reply 6:
Yeah, I know it's not perfect, and my goal is not to find a new way to protect against DDoS. I'm looking for an alternative way to compensate developers. From what I know, currently we have:-Pay before use (like a normal product) where either you put a reasonable price and get pirated in a couple of days or put an exorbitant price to discourage leaking. -Donation, where I'm pretty sure developers are far from being properly paid for their work.-The eldentyrell model, that can be DDoS any instant. I think that we can expand the eldentyrell model for every developers. Even with the DDoS risk, at least, it is usually temporary.

","[
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    ""hardware_name"": ""hash power"",
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    ""hardware_name"": ""miner software"",
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]"
17184,"Date: 2012-06
Topic: Cablesaurus PCI-E extenders?
### Original post:
Quick question --Do they allow you to use the PCI-E 1X slot that often goes RIGHT UNDERNEATH your 58XX card?In other words, is the cable thin enough so that you can still put part of a double-width (two slot) card right over it?I have one machine with a wide open PCI-E 1X slot -- but another machine where the 1X is underneath my 5830. Not being used, but totally covered by it.Just wondering if anyone knows from personal experience --Thanks,Matthew

### Reply 1:
I just tried, and sadly i cant get my 5830 to fit in a 16x port, right next to a 1x port with an extender cable, so you need 2x pci-e extenders for it to work

### Reply 2:
It depends on the Card. My non reference 5870x2 can fit a 1x extender underneath it. While my sapphire 6950 cannot.

### Reply 3:
This would be a 5850 and a 5870. I guess I better order another cable, eh?

### Reply 4:
I tried, and it will not fit under a reference 5850 and 5770, a XFX non-reference 5850 or a reference 7990.

### Reply 5:
Not with any cable widely available. You would need a special L-shaped plug to get away with using the blocked port.

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22570,"Date: 2018-05
Topic: Hash rate getting low from specific board
### Original post:
Hi All yesterday i notice that one of the board on S9 the GH/S(RT) is low the regular and also the are a-lot of error on this specific board what could be the reason ? <truncated> <truncated> oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo <truncated> oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo <truncated> oooooooo oooooooo oooooooo oooooooo oooooooo oooooooo <truncated>

### Reply 1:
Your format is tough to read at first. Can you post a photo of the status page and copy your kernel log make sure to use the # function for your kernel.It looks similar to an issue I had with my T9+, Have you tried restarting the Miner? If so does it Hash at full power and then drop off after a while?

### Reply 2:
sorry for that i upload it now <link> after rebooting it - it came to the regular situation - well it was fixed after the reboot but what i can see that this spesific board had alot of HW - from what its happening ?

### Reply 3:
If it happens again, possibly within a few hours post the kernel log here using the # symbol. I'm not great at deciphering the errors but it may be helpful to some.If it turns out to be similar to my issue; you may have a bad chip. You can check my posts and pictures in this thread. This was with a T9+. I opened my miner up with Bitmains permission to avoid voiding the warranty and found a heatsink with a scorch mark.If your miner is still under warranty and the problem persists, you should contact their support team as you may have to send the board in for repair. If your under warranty I would contact them anyways to at least document the issue in case it pops up again.

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15762,"Date: 2016-06
Topic:  Support Segregated Witness ASAP!
### Original post:
Could you point me to an ELI5 with the advantages of segregated witness vs blocksize increase? or is it the same thing?

### Reply 1:
From a layman's view, SegWit is a soft fork, while blocksize increase is a hard fork.

### Reply 2:
Is this the closest we'll get to an increase in block size for the next few months?

### Reply 3:
that's the process to accomplish the change, but to use what will it change ?I've been hearing about blocksize increase for some time and it seemed really easy and logical, then there's segwit that I don't understand, what is the diffrence in terms of usage for bitcoiners ?

",[]
3994,"Date: 2018-03
Topic: (UK) ASICMiner Cube 30Gh/s to 38Gh/s (worldwide)
### Original post:
Yeah...how about some proof that anything you are saying is true.And some detailsAnd description of payment methodsAnd refund policyAnd...get the point?

### Reply 1:
You forgot to mention the price Operatr, Group Buys are supposed to be a discounted price for pre-orders, 1.75BTC would be an eBay price IMO.

### Reply 2:
Payment is via BitcoinDelivery to myself will be within 3 days of order.Refund policy will be createdIf the group buy is not going to work out I will buy in the 10 units then resell from there but of course at a higher price.The supplier I have got is fully genuine as used for many years for parts so I have trust in that I will get the units fast.Hope that helps

### Reply 3:
Original price issued by supplier is 1.99BTC so ordering 10 is a fair discount. Postage on these is pretty heavy due to being 2KG a cube.

### Reply 4:
@CroverNo01Can you give more details on how this unit is powered? I've read in few places that it is supposed to be more ""consumer friendly"", but I still see the PSU connectors there. There's a USB port for something... would love to just power this without using a PSU, but not really seeing anything regarding that.

### Reply 5:
Hi, You can power these using Dell Server power supplies which is cheaper than using ATX modules. to be honest these still are not much improvement from blades, To run these at overclock you need more than 15A plus the 12V supply.USB port is for connecting to PC for mining software rather than ethernet.

### Reply 6:
Due to the current flux in bitcoin price I will set a price once confirmed order with the supplier to pass on the best price to yourselfs Cheers

### Reply 7:
Thanks much! So it seems with a easy enough solution (probably not cheap) for the power supply, you can just continue to use the mining software via the USB port. Nice feature.

### Reply 8:
wrong, for debugging and firmware updatesbtw: we preordered direct from asicminer, awaiting them in the EU soon. But we dont take any preorders, only selling in hand units, as alway

### Reply 9:
Have been told by supplier can be used with firmware for mining software also as you state ""debugging and firmware updates"" Only going by what supplier has told me.10 Units being sent DHL tomorrow to UK

### Reply 10:
Then your supplier is misinformed

### Reply 11:
Correct, Release date is today for them Hope your stock arrives soon, any idea of price ?

### Reply 12:
If you could negotiate the price down to 1.2BTC including 3 day shipping I would buy one, maybe two. Considering the power usage on these (old 110nm original B.E. chips, now in a cube!) and the ever-rising difficulty, it is simply not worth anything more.

### Reply 13:
Stock is on way to UK and due in UK Tuesday/Wednesday depending on any delays in weather.Once arrived will sort out price but should offer for 1.65BTC with Free UK DeliveryCan post worldwide for a + fee but would have to PM for priceThanks

### Reply 14:
If you will do this with some sort of ESROW I will take 1

### Reply 15:
Hi, It will be first come first served I have a number of people looking to buy but not making any sales till these are in hand.Thanks

### Reply 16:
interested, but I think escrow would need needed.No trust feedback and only a member for about 9 weeks

### Reply 17:
good question

### Reply 18:
I don't do trades on here so no feedback at all, Have a lot of posts on the AsicMiner Rigs due to my current rig always being updated.I have 5 years trading on my ebay account so been thinking of doing a private listing for each buyer.Thanks

### Reply 19:
HI, Sorry for the confusion, when I first started at price of 1.75BTC I have now lowered to 1.65 BTC with still free postage,Thanks

### Reply 20:
You may need to edit your original post to prevent any confusion

### Reply 21:
Thanks been updated with all information

### Reply 22:
Pictures?

### Reply 23:
Pictures will be supplied of stock in hand once arrival this week, Thanks

### Reply 24:
Update 18/11: DHL Still processing the shipment in China, was due to be in UK for Tuesday/Wednesday but looking more like Friday/Following mondayThanks

### Reply 25:
Do these come with a power supply?

### Reply 26:
These don't come with power supplies, Can use a good ATX with 2x 6pin to power, for overclock has to be over 15A supported.Soon special power supplies will be released for powering more than 2 at a time from original source.Thanks

### Reply 27:
I wiil take 1 or 2 if price go lower.

### Reply 28:
Same here - current price is 1 bitcoin on the US group buy thread

### Reply 29:
News?

### Reply 30:
i just want say that I have got 1 cube alredy in use from 2 days. good running , small heater

### Reply 31:
Update: Currently still sitting in HK Customs, being cleared tomorrow as needed final paper work.Then straight to UK within few days will get some photos up 2 have already been soldThanks

### Reply 32:
If 2 hav<rest of thread truncated>
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16292,"Date: 2022-07
Topic: Current Cost of s9 and best place to buy
### Original post:
I see a 14TH at new egg for 439$ . Is there a better place I should buy, looking for reliability and honest vendors that's why I was thinking Newegg. I'm debating bidding on eBay though.Love to hear your thoughts on used s9 pricing and availability Thank you. Cheers.<link>

### Reply 1:
You probably should not buy a Bitmain S9 unless you have free power, or you think BTC price will go to > $100k this year.

### Reply 2:
According to this calculator <link> can reach the ROI after 1yr and 9 months. If you can get cheaper used or 2nd hand ASIC miner you can get ROI fast.Use this tool to find the ASIC miner below then set it to 0 power cost just sort them with the algo and profitability.- <link> try to contact offordscott for a used miner at a cheaper price. He sells an Antminer s9 before for $85 each which is way cheaper than your source.

### Reply 3:
85$ is exactly what Im looking for if they work! Why couldnt I find him on google, seems to good to be true.

### Reply 4:
If you read the posted link above it was posted 2 years ago so it means there is a possibility that miner are sold out and that time the price of Bitcoin is around $9k compared on the price today so it possible the prices are changed.However try to contact him and maybe he can able to give you some other source with cheaper price than $439 you can maybe get them for around $150 or around $200

### Reply 5:
Current prices in China:S9K 129$S9 144$You can find a reliable supplier to buy, provide test video and SN code before buying

### Reply 6:
First off are you USA based?Ebay is okay get an s9I or an s9J or a s9 do not get an s9k<link> good seller but a bit pricey<link> good seller but a bit priceylook at auctions you may get a psu and an s9 for 200-220 if luckythe reason they are not cheaper is they earn $1.25 pre power.many have free power limited amounts but enough to run 1 s9 So 200 x 1.25 = 250 which means they pay off in 200 days if you are free power.

### Reply 7:
You will only find scammers if your target price is 85$ for an S9, the average price for S9 is almost always it's monthly profit (before the power bill) * 3, right now it nets about 45$ so you are looking at about $135, but that's usually with an OEM psu, for APW3 you need to add 20-30$, to get the i or j version you are also looking to add a few tens of dollars on top, this has been the average way of pricing S9 since 2018.If your order is large enough, you might get a bit more discount, also, the x3 figure drops a bit when it's a bear market and people have less desire to buy gears, and it goes up a bit when everyone is fomoing, but you can use it as a solid average, anyone selling far below that price is likely a scammer, anyone selling way above the price is just too expenisve.

### Reply 8:
Best prices Ive found are on eBay. Ive seen 200$-300$, seems to be going rate. The s9 are still trading and in demand like the above poster stated.

### Reply 9:
I correctly understood that you have very cheap or free electricity? Start searching for these asics in your country or nearby.

### Reply 10:
Now about 100-150$

### Reply 11:
in the buy it now sectionthere are no s9s with a psu on usa ebay for 100-150for auctions they may be 150 but the auction has not ended.sometimes you can get a good auction price.<link> 209 free shipping and a psu 2 hours left to auction end.<link> 155 free shipping and a psu 5 hours left to auction end.sellers may be good.edit:the first one went for 212+19= 231 which is decent if you have free power.

### Reply 12:
Saw used S9K at 85 USD from AKMINERS (shipping on top)

### Reply 13:
Be careful dealing with AKminers they are bad sellers many people are complaining and being scammed by that seller.Also, some people receive broken units so better stay away from them.If you are looking for cheap units I suggest you contact offordscottWhich is way more trusted than Akminers.

### Reply 14:
Wow first time i heard that about them. I thought they were legit, they are a trusted vendor on asicminervalue.com

### Reply 15:
I can't vouch nor claim AKMINER is a scam, but asicminervalue.com isn't reliable when it comes to finding trusted vendors, with that said, S9k is NOT S9, not S9j, and not S9i, S9k unlike the other three models mentioned is a piece of junk and it's always cheaper to buy, $85 for an S9k sounds about right, you can easily find them at that price, but should anyone buy them? my answer is NO.Anyway, if someone is looking for a large quantity (100 or more) I can help source them in China, I am not interested in doing so with smaller quantities tho.Also keep in mind that there is a HUGE difference between buying farm stock as is and buying tested and cleaned miners, given how cheap S9s is, the difference in price between both can be up to 20-30%, and buying farm stock comes with increased risk, but it's cheaper because nobody has to do any work, miners are ready inside <rest of thread truncated>
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4013,"Date: 2022-08
Topic: Antminer T19 Hydro for 2175$, any interest?
### Original post:
Here's the link: <link> quite interested in this, but i only want 2 units, and minimum order is 188!Wondering if a group buy would be possible with EU members.Preferably created by a known member for more truthiness.Just leaving this here to check interest!

### Reply 1:
I'm interested but 1 unit only

### Reply 2:
I think you may have misunderstood, the introduction I saw is ""NOTES 1.Each user is limited to 188 units."" Then it should mean that a customer can order a maximum of 188 units, not a minimum.

### Reply 3:
Nope.I contacted Bitmain, here's their reply:Anyway the interest is so low (no other participants here) that this should be canceled i guess.

### Reply 4:
could anyone tell me what is the chip used in this device ?in product specification not mention any type of this information like how many hashboard it has or how many chip is used in this . not even the frequency . but i found a picture in product manual , but I'm not sure it's correct or not . <link> this image i see 4 hashboard , each has 104 chips that works in 550 MHz frequency . please let me know if this info is correct or not . and if you know what is the difference with S19 Hydro 3950$ with same amount of the hashboard and chip with little more frequency 600MHz . <link> S19 Hydro use another type of the chip ? please let me know what you think ? i am interest to but more than 100 pcs and if anyone want's 1 or 2pcs , i'll be happy to sell you when i get my shipment .

### Reply 5:
Googling a bit i found this: <link> the T version of antminer miners have fewer chips at higher <truncated> they get higher hashrates from lower efficiency and prices.If you could purchase the entire 188 batch and then sell a few of them with escrow, i at least would be interested!

### Reply 6:
As i said, T versions have fewer chips at higher <truncated>

### Reply 7:
i asked the same thing from Bitmain support and they reply this Nick (BITMAIN) Aug 16, 2022, 15:47 GMT+8 Dear Customer,1.Each S19 Hydro or T19 Hydro has 4 hashboards.2.The chip model of S19 Hydro or T19 Hydro is BM1398BB, there are 104 chips on each hashboard, and a mining machine has a total of 416 chips.3.There is no special difference between different water-cooled miners except for the model, hashrate, <truncated> buy ANTMINERs, please log in to the website: <link> Kindly be ware of phishing scams and always verify the domain name.""Solved"" means we replied - we may still be working on your issue.

### Reply 8:
hi Did you see the pictures in those links i sent , if this is true that T19 and S19 have same type of the chip , same number of the chip used in one device and ,etc how could this Possible that more frequency , more hashrate , less power ? <link> thing is not correct in my opinion .

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21085,"Date: 2016-07
Topic: probability of generating a block solo mining Bitcoin vs lottery
### Original post:
Right now, If I were to solo mine Bitcoin with a low hash rate (300mh/s) what are my chances of generating a block?I heard that the chance to generate a block is like playing a lottery, like the odds are 1 in 8,000,000. Is this true?

### Reply 1:
At 300MH/s and current difficulty of ~4.8mio you'll need an average of ~800days to generate 1 block,difficulty will change soon to ~6.8mio, puts your 300MH/s to an average of ~1000days per block.You might get lucky and solve a block in 1year, or never, which is more likely.

### Reply 2:
Haha, wow 3 years. Is it possible to work out the odds of solving the next block? (As in the next 10 minutes)

### Reply 3:
I think your chances at finding a block are MUCH better than winning a lottery. That being said I would think at 300 MH\s it would take you 2 years 73 days to generate a block on average.zif

### Reply 4:
Sort of. For pooled mining, 300MH/s means you're checking 300,000,000 hashes every second to find a valid share, and should get about 4 - 4.5 shares a minute. A share is anything with a difficulty >= 1. If the share's difficulty is over 4.85 million (the current difficulty), then it's a successful block. For solo mining, we don't care about diff=1 shares. All we care about are the diff>4.85million, or the block solvers. And yes, a diff=4.85million share will pop up about once for every 4.85million diff=1 shares. So as far as the lottery analogy is concerned, it's more like 1 in 4,850,000, but that lottery happens 4-5 times a second, not once per day like the PowerBall.

### Reply 5:
Short answer: Not worth it. Get a pool. I recommend Ozcoin.

### Reply 6:
Thanks.So it is possible to solo mine and be extremely lucky and hit a block right away, except the chance of this happening is currently 1 in 4,850,000

### Reply 7:
Yeah thought so. :) cheers pal.

### Reply 8:
Yep. Pretty much. Anytime!

### Reply 9:
but what about if i get lucky?easy 25 btcat 300megahash in a pool you need more than 25 months anyway to get a reward of a block(25bitcoin)i'm talking at when the diff was 5m

### Reply 10:
Was funny how you call it a lottery, though I got 2 when I first started learning about bitcoins. The bad of it like you say you need alot of processing power and I didn't and I missed out. ALSO, even if I did I'm not quite sure I had it setup right to deposit to my account and would have been mining for free .Might have been the fact that I had a fresh index but I wish I had that luck on a more known lottery in my area. I'm going to try again if I ever get my bitcoin miner

### Reply 11:
4-5 times a second means 84500 (seconds in a day) times 3 which is 338000 and 4,850,000 divided by 338000 is 14, so that's a 1/14 chance a day. So basically 1 block every couple weeks. But somethin' tells me it's a lil harder than that. What do you guys think about this?

### Reply 12:
nice bump for old thread, but difficulty went up a bit<gribble> The average time to generate a block at 300.0 Mhps, given difficulty of 65750060.1491, is 29 years, 44 weeks, 2 days, 0 hours, 14 minutes, and 50 secondsand difficulty going up at least 20% in 6 daysThough a guy on my pool did find a block on an overclocked 333mh block eruptor after mining on it a week or 2 - there is luck involved

### Reply 13:
No, it's 4-5 shares a minute, not a second. Actually right around 4.7shares / minute. Also, why did you multiple by 3 randomly? 335MH/s will average out to just under 6,800 shares per day (4.7*60*24). With a difficulty of 65.8Million, it's more like 6,800/65800000, which is almost a 1/10,000 chance.

### Reply 14:
Whoa dude thats a lot of hash-power. A ASIC farm?

### Reply 15:
What hardware for 950GH?

### Reply 16:
So with current diff, at 86M. your making 5.4 coins (in a pool) per day.. you made 25 coins in 5 days august 30th to september 3rd (solo mining).Do you still solo mine? have you gotten lucky? Im thinking of trying.. but dont have 950GH.

### Reply 17:
thanks for sharing! bit far from 1 th.. hm ok.

### Reply 18:
Clearly there is some luck involved. I've been hashing less than two months with these and found a block. But I was pool mining, so...

### Reply 19:
Did you get a better return for finding it. EclipseMC seems to be finding a lot of blocks since when I run that straight my miners keep stopping and going but none were mine. I haven't found a management strategy that works both to get me the most shares and increase my chance of finding a block in a pool.

### Reply 20:
Sidenote, 86400.

### Reply 21:
Massive dredge!I am having a debate with a friend about the probability of solo mining a block at 4Gh/s at current difficulty and specifically we are comparing it to the UK National Lottery which costs 2 to play with a probability of winning 1,000 of 1:55000 and a probability of winning 50k of <truncated> is roughly 1:14,000,000)We estimate that the probability of solo mining a bloc<rest of thread truncated>
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22891,"Date: 2019-03
Topic: 220 Volt Plugs
### Original post:
Hi,I won a few thousand in a lawsuit. I am going to be getting 4 Whatsminer and 3 S11. I need to know where to get a plug for them that has a USA 110 volt connection. Do I need to get transformers? Do these rigs come with a power supply, the plug? Is it workable in the USA? Any USA miners out there with these types of miners that can help would be excellent. I shop mostly at Amazon which is where I am buying the miners.Thank you in advance,Stacey

### Reply 1:
do not run that gear on 110-120 volt circuits.that its the short story.but if you are crazy enough to do so here is what you need do.you must change your mind. and call an electrician to wire a 30 amp 220/240 volt circuit.1 30 amp circuit can run 2 m10's safely. if volts are 220 to 240

### Reply 2:
So, a surge protector that runs a 22v and has a US extension will not work?

### Reply 3:
Thanks for the detailed explanation. I will go with the 8 RX 570 8GB instead. I rent for right now. Maybe I will upgrade to the S11 and Whatsminer after I move to Florida and get my own place. Then I will be able to make the upgrades. Thanks again.

### Reply 4:
let me try to explain the issue. surge protectors have nothing to do with the psu requirements.the psu wants 220 volts well actually 208 to 239 volts worksso if you want to run the gear you need to send proper volts to the psu.If you are USA based and have 110/120 volts and can not get access to the panel to see if a 220/240 line can be placed in you have very little options.here is why. a 110/120 volt line in the USA is most often 15 or 20 amps.So 15 x 110 = 1650 watts which to run safely non stop you must derate by 80% translation1650 x .8 = 1320 watts is your max pull. if you get a transformer it kills 2% so 1293 watts is your max safe pullthe s15 pulls 1585 watts on full powerthe m10 pulls 2250 watts on full powerso you most likely will kill off something running a m10 or a s15 at full power on a 110/120 volt circuit in the usa.So if you can not put in a 220 line don't mine with s15t15m10If you insist on trying to run the m10 you need a 30 amp circuit and it needs 10 gauge wire from the circuit panel to the receptacle.you then need a step up transformer that reads it can do 5000va.frankly I did test on two one that says it can do 4000va the other says it can do 5000va.Both are <rest of post truncated>

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9663,"Date: 2016-01
Topic: Effects of operating Antminer S5 with 400W-600W PSU
### Original post:
Just curious what one might expect in this situation:Running an Antminer S5 on 400W to 600W power supply. Would you expect the miner to turn off one of its hashing boards and run at half speed, assuming the PSU does not like a full load for long periods? Is there a failsafe in the machine that will limit its speed in terms of Mhz?

### Reply 1:
Thee is no failsafe in the miner for that. What you can expect is very short PSU life, increased HW errors and dropping ASICS (x)'s possibly entire board, requiring a hard reboot (cycling the power). In short - don't do it. For reference, at stock speed my s5's draw 630w from the wall with Gold PSU's.

### Reply 2:
It's a bad idea to get less then needed or just enough. If you are dead set on it for some reason lower the running speed. To do this long term is not a solution unless you run at lower freq.I suggest getting a decent PSU that matches requirements. They actually hold value decent. So you can sell it after your done, or you might use it with another miner possibly. Although server PSU's have started to take over.

### Reply 3:
Just get you a cheap server power supply for like $80 bucks and run two. With no problems.

### Reply 4:
Thanks for the input!Looking at picking one one of these. One of the boards apparently shot but other is okay...

### Reply 5:
No Problem. Best of Luck. If you do not have enough voltage that might be one of the boards is not working.

### Reply 6:
If you want to test things with the PSU you have then the thing to do is plug up one Hash Board at a time.Start by disconnecting the Board that does not have the 4 Pin Power connector, run and check what happens. Then to test the other board you will need to turn the controller board 180 Degrees so that you can plug the 4 Pin Power connector to the other board.Rich

### Reply 7:
Just tried to power a single s5 blade&controller from an 24A psu.I got beeps and beeps and beeps and no hashing! The psu is too weak to power the controller, the blade and the fan.Might have worked only on the blade, not sure

### Reply 8:
400 watt ps, the miner won't even fire up as it will trip the overcurrent protection on the PS and the PS will shut down.Ditto 500 watt.600 watt might work, *IF* it is a rare 600 watt PS with 50 amps or VERY close to that on the +12v rail AND a single rail, or it has 2 +12V rails that the PCI-E connectors are splt between with at least 25A per rail - but pushing it that close to the limit isn't a good idea, and more likely it won't have enough +12V capasity and there goes the overcurrent shutdown.....If you set the S5 ahead of time on an ADAQUATE power supply to be underclocked enough, you might be able to get by with a smaller poiwer supply afterwards.

### Reply 9:
24A PSU is not enough even for a single board. For a single board I would not use less than 30A /350W. Rich

### Reply 10:
With really good quality 600W PSU (50A/12V, 4xPCIE) no problem

### Reply 11:
It might work on a single blade, the one without controller and fan, But it's riskyOn lowest fan speed, i got 570watt on 240volt circuit, so...

### Reply 12:
Overclocked, a single S5 blade should go up to 300W DC, so its definitively okay for one blade. I suppose if you overvolt the 12v input, you could go higher, but, knowing this, it should not be too hard. And at stock settings, if the PSU is actually 600w, which probably means when its on 240v, then it can do the whole S5 no problem, with probably a decent overclock, too.

### Reply 13:
I see more like 600 watts at STOCK clock out of most of my S5s - but after factoring in the fan and controller/computer usage, 25A should be fairly safe on the hashboard-only side for a non-OC S5.I wouldn't even think about trying to OC an S5 on a single 600 watt PS - that's pushing it PAST it's ratings - even if it has a 50 Amp rating for it's +12 rail and is single rail.

### Reply 14:
Hmm, its not past its limit, 600W PSU's limit with .9 efficiency would be 660W limit at the wall. You'd have to really overclock it to get that. But if he said 400-600 PSU, it make it sound like it could be 400W for 120v and 600W for 220v.

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    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""600W PSU (50A/12V, 4xPCIE)"",
    ""hardware_is_owned"": true
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]"
22921,"Date: 2019-04
Topic: DPS-1300BB pinout needed (for voltage control)
### Original post:
Can anyone help me providing the correct pins for voltage control?Pics of the connections for pson (and +/- connection) are widely available, so those are known.Thanks in advance!

### Reply 1:
Let me give a link to another resource in Russian. There we gathered a lot of information about the pinouts. Maybe this information can help somebody - <link> of the power supply is regulated by potentiometer. If we do not go adjusted to the correct value. We need to alter the power supply circuit, it is often difficult and does not make sense. I need to 9v. On most PSU is ""impossible"" default without change circuit. Sad.

### Reply 2:
Keep in mind that computer PSU's are made to supply 12v or slightly more. Very few can be throttled lower. The nature of delivering power over wire means that by design a (computer) PSU should only need to compensate for voltage drops over the wires. As a result there is little to no downward adjustment possible without modifying the feedback circuit.

### Reply 3:
I know this is very old but if you could tell me what panel the pot meter is behind it would help looking to boost voltage to 14 v

### Reply 4:
I'd be willing to bet that the pins are the same as the 2000BB:Let us know if it works. If not, there's a guide on rcgroups showing how to find them.

### Reply 5:
No luck in finding the correct pins I did find a panel with a potmeter behind it, which allows to adjust voltage to about 11.8v though. But i need 10v If anyone can help me, please let me know.

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9807,"Date: 2016-05
Topic:  pH Miners Launches Powerful Cryptocurrency Miners for Bitcoin
### Original post:
LOL 15 year warranty.

### Reply 1:
And of course they only accept payment in bitcoin.

### Reply 2:
Let's just go ahead and label this as a scam, please.Here we go on another one.A 15 page thread in 3 days.Q: WTF is ""a moneyback"" ?A: An obvious second language

### Reply 3:
I just mail them yesterday about pus and you don't need to , as you receive a PSU along with the miner . You just plug-in and start easy as that .

### Reply 4:
I'm not so sure it's a scam. You seems to discard that the one and only Eric Franklin is the CEO of pH Miners. And it's backed by a 15 years warranty.Seriously this scammer is way too lazy.

### Reply 5:
With a 15-year warranty, it must run pretty cold to not strain the caps. Also, I like that apparently their forum presence and/or designated announcer has to email them about questions - pretty loose affiliation. Can we get a link to the website which was definitely not registered last week? Maybe post some photos of borrowed renders or lame photoshops?

### Reply 6:
...sorry, I had NO idea... ...wait, who is that? Excuse my lack of knowledge, but what are his qualifications?The breakdance guy?

### Reply 7:
About us picture is stock (obviously).Domain information hidden but registered in January 2016 <truncated> registry whois Updated 1 second ago - RefreshDomain Name: <truncated> REGISTER.COM, INC.Sponsoring Registrar IANA ID: 9Whois Server: <truncated> URL: <link> Server: <truncated> Server: <truncated> Server: <truncated> <truncated> <link> Date: 20-jan-2016Creation Date: <truncated> Date: <truncated> registrar whois Updated 1 second agoDomain Name: <truncated> Domain ID: <truncated> WHOIS Server: <truncated> URL: <link> Date: <truncated> Date: <truncated> Registration Expiration Date: <truncated> Register.com, Inc.Registrar IANA ID: 9Registrar Abuse Contact Email: <truncated> Abuse Contact Phone: <truncated> Status: <truncated> <link> Registrant ID:Registrant Name: PERFECT PRIVACY, LLCRegistrant <truncated> Street: 12808 Gran Bay Pkwy WestRegistrant City: <truncated> State/Province: FLRegistrant Postal Code: 32258Registrant Country: USRegistrant Phone: <truncated> Phone Ext.:Registrant Fax:Registrant Fax Ext.:Registrant Email: <truncated> Admin ID:Admin Name: PERFECT PRIVACY, LLCAdmin Organization:Admin Street: 12808 Gran Bay Pkwy WestAdmin City: JacksonvilleAdmin State/Province: <rest of post truncated>

### Reply 8:
Too many mistakes just from their website alone as some have mentioned it. There's also lack of SSL certificate plus there are few spelling mistakes. Not to forget, the site looks like 5 minute work of someone who thought I could fool people with this. A little correction to the OP (their litecoin miner has 15 years of warranty while their BTCitcoin miner has 5 years of warranty), how interesting this is, hmmm? Another interesting thing is the following two faqs:Q. Can I pay cash in your office?A. Due to security policies and our confidentiality policy we cannot accept this method of payment.Q. Can I visit your office, data center or manufacturing facilities?A. Earlier visits were possible by preliminary coordination for some of our wholesale customers. However after several cases of industrial espionage we decided to prohibit personal visits.First thing I look in any legit company, is that you have the ability to go and evaluate everything by yourself and here, it's clear that their hiding something (reality perhaps).

### Reply 9:
""Cybercurrencies"" WTF.Hey OP, your short posting history suggests you are really keen to start mining, fair enough, but make sure you pay for miners that actually exist.The picture they are using has been used so many times by scams that it's probably registered as a stock photo ref: ""vaporware"" by now.Search SMART miner, minerslab, hashingminer, ad nauseum...<link>

### Reply 10:
and gotta love this from their FAQ:Q. Can you mark my order as gift at shipping or lower the price in documents, enclosed with the miner?A. No, we cannot send the shipment as gift. But we can mark it as spare parts and lower the price or the order.In other words they are openly saying that they are willing to commit Customs & Duty/VAT fraud regarding their shipments. Nice way to get on a govs imports watch list. Depending what country is involved if caught they are facing major fines up to possible loss of their biz lic.

### Reply 11:
First of all where are the pictures of miners? Better if there is a video of miners hashing for better proof.Secondly Bitmain, a recognizable company have not yet come up with a 25TH/s miner. They are now struggling to make a 10TH/s one.Thirdly, your website is privacy protected.If somebody is selling miners why will he hide himself? Selling a miner is not illegal I guess. And if it is, then stop selling right away because nobody will even contact you if you try to remain anonymous this way.Lastly,I will pay through PayPal<rest of thread truncated>
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    ""hardware_name"": ""litecoin miner"",
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    ""hardware_name"": ""BTCitcoin miner"",
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]"
23927,"Date: 2022-04
Topic: Avalon A1246 87Th not hashing or hashing at a very low hashrate HELP
### Original post:
Hi all, I had a problem with an Avalon A1246 87Th/Sec., It stopped hashing and it had this error where you can see many 273, 273, 273, 273 numbers repeated many times, that was yesterday and today I got the other log with many 1, 0 and 2 and it started hashing but at a very low hash rate and only for a couple minutes and then it started to lower the hash to 3TH/Sec. I restarted it and it stopped hashing and started again with all those 273 numbers... I dont know what is happening, can I get some help? Ive bought the miner on September 2021 and i dont understand why it failed so soon.im not a technician and i dont know what its happening, any help will be great.Thanks.<link>

### Reply 1:
PVT T0 shows the chip temperature on your hashboard no.0, so it could be an issue with that board, try to unplug it if there is a way and see if the miner works fine without, the Avalon A1246 seems to be of bad quality, at least this is what many people are reporting, most people say that Avalon's old models were way more solid than the new models, it's probably why the new models sell cheaper than Bitmaind and MicroBT.Also, do update the full logs, a few people here know how to read the logs from Avalon and will probably provide you with more info.

### Reply 2:
Thanks mikeywith, right now is giving me this for the first 3 <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':5,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1203760.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[213] <truncated> LW[79035] MH[0 0 0] HW[0] DH[0.000%] Temp[41] TMax[58] TAvg[48] Fan1[2305] Fan2[2285] Fan3[2314] Fan4[2311] FanR[25%] Vo[0] PS[0 0 0 0 0 0 11] PLL0[2640 1440 15360 0] PLL1[2640 1440 15360 0] PLL2[2640 1440 15360 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[58 54 54] MTavg[50 48 48] TA[360] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[488 508 528 548] SF1[488 508 528 548] SF2[488 508 528 548] PVT_T0[ 48 52 53 54 51 50 49 53 49 49 50 51 50 49 55 53 52 52 50 54 55 55 50 50 47 46 52 52 47 48 50 49 51 48 49 50 50 51 54 58 52 50 50 53 56 53 52 50<rest of post truncated>

### Reply 3:
I will use the code tag since now on. I didnt flashed the firmware, i dont even know how to do it, do you know where can i get the most actual firmware for this miner?

### Reply 4:
Today i got this msg from the Avalon Team:""Hello, customerPlease check whether the connecting wire between the power supply and the control board is in bad contact and try to plug it again. If it is invalid, please try to replace it with a new power supply. Thank you!""I will check the cable and PSU but the miner is still in warranty period but i dont know how much time they will get to give me the replacement, maybe is a better option to buy it from a reseller because the miner stopped is not hashing and thats money, but first first, i will try that fixing and see if it works.Someone knows where can i buy that PSU?

### Reply 5:
Usually you can get the firmware for this unit here <link> the problem they remove the firmware link. If you want to flash it try to contact sales@canaan.ioMy suggestion try aging with FMS tool you can download it here <link>

### Reply 6:
Today i swaped the PSU from another avalon A1246 i have and it started mining at full hashrate but i got this log where you can see there are some hardware errors and that number was getting higher slowlly with the <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':21001,'Remote <truncated> Blocks':2,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1209232.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[1106] <truncated> LW[1070189] MH[8 10 9] HW[27] DH[2.841%] Temp[47] TMax[83] TAvg[68] Fan1[0] Fan2[0] Fan3[0] Fan4[0] FanR[100%] Vo[315] PS[0 1216 1260 254 3200 1260 3601] PLL0[2807 1163 2753 7197] PLL1[2310 3331 4237 4042] PLL2[2977 738 1992 8213] GHSspd[85438.02] DHspd[2.841%] GHSmm[88026.05] GHSavg[83163.50] WU[1161780.74] Freq[526.98] Led[0] MGHS[28330.60 27805.96 27026.95] MTmax[79 80 83] MTavg[69 67 69] TA[360] Core[A3201] PING[86] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[488 508 528 548] SF1[488 50<rest of post truncated>

### Reply 7:
Are you talking about HW being slowly higher?It seems that it's because of the fan sign<rest of thread truncated>
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13484,"Date: 2016-02
Topic: Avalon Nano on Ubuntu (BFGMiner)
### Original post:
Hello,I bought Avalon Nano 3 <link> I plug in miner it's LED shows green light. I use Ubuntu 14.04.In BFGMiner I try to add new device.What argument should I put in device type?I tried ""all"", LED flashes RED (something is using it) and changes back to GREEN, BFGMiner shows no device!Please, can you help me???Bye.

### Reply 1:
also have a question on the topic, flashes and some rarely lights up blue light, overheating, although located under the screw, or to bring the ice, and another question.what the body of the product in the refrigerator is cold put it in the camera, in the same moment plunged into the ice, which was difficult even with hot water rinse.

### Reply 2:
I use this command with my Avalon Nano 3 on my Raspberry Pibfgminer -o Pool URL -u Worker Name -p Password -S ICA:/dev/ttyACM0 --set-device ICA:baud=115200 --set-device ICA:reopen=timeout --set-device ICA:work_division=1 --set-device ICA:fpga_count=1 --set-device <truncated> --set-device ICA:timing=0.22 --api-listenTry it out and if you have any questions feel free to ask them

### Reply 3:
I need this translated into English because it sounds interesting.

### Reply 4:
I run 1 with this line from the desktops usb port after awhile they heat up. I then use Awesomeminer to run it since awesome reboots the miner if it is dead. Ofcourse you are better of with geckos compac instead on a pluggable usb hub.bfgminer -S <truncated> -o <truncated> -u address -p 123 --set-device ICA:baud=115200 --set-device ICA:reopen=timeout --set-device ICA:work_division=1 --set-device ICA:fpga_count=1 --set-device <truncated> --set-device ICA:timing=0.22 --api-listensorry this is win7

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16591,"Date: 2023-09
Topic: Russia Becomes World’s Second-Largest Crypto Miner
### Original post:
Russia has become the worlds second-largest cryptocurrency mining country this year, the Kommersant business daily reported Friday, citing Bitriver, Russias largest bitcoin mining provider. While the United States remains by far the world's largest crypto miner, boasting 3-4 gigawatts of mining capacity, Russias generating capacity reached 1 gigawatt in January-March 2023.In taking second place for the first time, Russia took a spot previously occupied by Kazakhstan, which introduced restrictions on crypto mining activities in 2022 and now ranks ninth, Kommersant cited Bitriver as saying.

### Reply 1:
Power does not matter vs hashrate.If you are using 1 gigawat of power to mine with 3 generation old equipment it's meaningless. Someone with 1/4 the power could out mine them.Hashrate and pool info (and I guess what they are mining) is what matters.They could be burning all that power to mine ETC since they got all the ETH miners cheap.....-Dave

### Reply 2:
Russia is really going all out with their mining efforts and they are outperforming many other nations in this regard. It is indeed peculiar to observe that they have overtaken Kazakhstan in terms of mining operations and are even competing with United States to secure the top spot. I must say that Russia still requires a significant amount of energy over 3 gigawatts to be precise to get close to the almost 4 gigawatts of energy put into mining by the United States. Russia has the potential to reach top spot in the mining if they utilize their huge land mass properly by installing renewable energy systems, they can easily surpass other countries in mining operations by 2025.I agree with you that power is not as important as hashrate in mining operations. Older mining equipment's are not energy efficient and can't produce the same hashrates as modern equipment's. The new generation miners are designed to use less energy while achieving higher hashrates.It is also important to note that what if Russia is using the latest generation of mining equipment's? It can utilize its huge land mass by installing solar panels to add even more power to its operations. It is worth noting that Chin<rest of post truncated>

### Reply 3:
Even if we only consider the gigawatts of energy, Russia is still far to be close to The USA (4 GW vs 1 GW)Russia being under sanctions, almost no foreign company will deal with.What about this rather, added with the higher taxes for miners, and the Ecology's terrorists...1) Electricity's priceLike many countries, it is as a result of the war. But it's something that will end sooner or later, and so it will return back to normal.2) Higher taxes for miners, and the Ecology's terroristsI'm refering to the paragraph belowReality:The United States is a resource-rich country with abundant renewable energy resources. The amount available is 100 times that of the nations annual electricity need.Statistics:In 2021, renewable energy sources accounted for about 12.4% of total U.S. primary energy consumption. Renewable energy sources accounted for about 19.8% of total utility-scale electricity generation.And that was in 2021 (I haven't looked deep to get fresh data). In 2023, it's surely higher, since almost all countries are jumping in the renewable energy wagon, pushed by the terrorists of <truncated> about bitcoin mining:According to the Bitcoin Mining Council's 2022 report, 59.5% of the t<rest of post truncated>

### Reply 4:
No wonder because according to <link> Russia has cheap electricity around 0.06 per KwH and of course a good internet connection cold temperature and it seems regulation there allow to mine bitcoin with Crypto miners in Russia will have to declare earnings or face jail time. - <link>

### Reply 5:
If you look at wholesale prices in the Irkutsk region, they are at least 2 times cheaper. There is a lot of old mining equipment in Russia, but when you buy it very cheaply in China and pay 3 cents for electricity and still do not pay taxes, then the miners make good money. The law on mining has not yet been adopted.

### Reply 6:
Delayed by the war no doubt. But the situation may change at any moment. They were clearly aiming to put a leash to all mining operations before the conflict. Kazakhstan was rising after the China ban, until the State started imposing restrictions, people protested and Russia sent troops to end the protests...Cheaper is not always better. My country is less than half a cent (0.004) but so insecure you just can't risk investing anything as people lose their assets left and right from State intervention or criminality (or both). There was a certain hosting trying to bring investors, just pay 4 cents (so they net 10x) but guess what. State imprisoned the guy in charge of the institution in charge of regulating ""crypto currencies"". All mining was ordered to stop, at least half a year the investigations may take. That ins<rest of thread truncated>
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    ""hardware_name"": ""ETH miners"",
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    ""hardware_name"": ""new generation miners"",
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    ""hardware_name"": ""latest generation of mining equipment"",
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22951,"Date: 2019-05
Topic: Innosilicon T2 Turbo SSH
### Original post:
I can't seem to find any previous posts about this. Has anyone cracked the ssh login password for the 24TH Innosilicon t2 turbo? Thanks in advance.

### Reply 1:
There have been a few posts recently asking about ssh passwords for Innosilicon miners.Other than the three known ones, the best bet is just not to update your firmware.The three known passwords are: innot1t2 or t1t2t3a5 or blacksheepwall.

### Reply 2:
I'm basically looking for the same for my T-1's. I know someone on the forums has cracked the old ones... maybe we can offer a reward for cracking the latest one?

### Reply 3:
There is someone who can crack the password of Innosilicon miner according to this thread <link> funbuxx can crack the password but it seems he is not online for a long time.I read some of his posts and according to him, you need to extract or disassemble the firmware and look for the encrypted password then crack it. I don't know which tool he use to crack it.

### Reply 4:
I have a GPU rig I could run a password cracker on for an extended period of time if someone can get me the encrypted password. Anybody know how to do that piece?

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    ""hardware_name"": ""T-1"",
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9608,"Date: 2016-01
Topic: Would an S3 control board be able to work with S5 Hash boards?
### Original post:
Hi guys, and happy new year btw...!I have an S5 that is not working any more and an S3 that has 1 faulty asic chip already...I was wondering if there would be a way to use the controlboard of the S3 and in some way make it work with the S5?Would it be possible to flash the S5 OS on it or would it be able to read a board with more asic's on?Anyone ever tried?Kind regards!

### Reply 1:
No it's not possible.

### Reply 2:
Would it maybe be possible to hook up 4 hash boards on 1 S5 control board maybe?(Just trying some out of the box thinking coz it seems so sad to have 1 S5 not working anymore...)

### Reply 3:
Yes that works well, at least with the <truncated> firmware. Not sure about the other versions?Rich

### Reply 4:
Cool! that is great news...!Is there anything else I should be aware of or would there be any tips or advice on how to connect and set them up?I would have thought to lay 2 S5's on the side with the top pointed towards each other so I can connect the 2 hash boards on the control board of the working one.I suppose I need to turn on the power of the hash boards before turning on the S5's with the control board?Would the rest then be plug-n-play?and one last question...(I should have opened with that, to make sure)when I tested my hash boards one by one on my original control board they seemed perfectly normal.it's only when both were on that specific board that I read errors.never the unit wanted to hash anymore.every time I tried to change something I got different readings:once it was the 1st board failingthen the otherthen both working but no hashingthen all in ------So I ended up assuming it has to be the control unit...Think I could be wrong?Would there be other ways to test the hash boards without ridking my good S5 I have left?

### Reply 5:
Get some of these and you will save yourself a lot of trouble;<link> does work on the sides though, its just a real pain.)

### Reply 6:
If your system is fine with a single Hash board connected but you are getting variable results with both connected then I would suspect the PSU?Rich

### Reply 7:
I did try the psu that runs my other S5 and still it gives the same weirdness...When I hook up 1 hash board at a time it shows up completely fine in the ""asic status"" tab but it still doesn't hash...That's why I suspected the control board to be bad because from what I read the device should mine with only 1 hash board connected... right?

### Reply 8:
OK I had misunderstood, thought you had said I took this as meaning they were hashing ok?If they are not hashing and the PSU & control board and control cables are tested ok then likely it's a fault on the Hash board.Rich

### Reply 9:
Yeah... never mind... the 2nd just crapped out on me... like: right now...are those S5's poorly built maybe?or did I get ripped off?Guess that teaches me for not buying the newest model straight from the <truncated> honestly... how are my chances to get a good model and not have to wait for ever if I were to order a new one from bitmain?(this feels like the crying game... )

### Reply 10:
I never had any problems with S5's. Miners that were running before i got them continued to mine(to this day actually). Unless you're using some PSU that is raping them, they should continue working.

### Reply 11:
Yeah... guess I got unlucky... didn't even have them working for 24h...So... what are your experiences with Bitmain tech and ordering from them?Can I trust them? Or is it the same russian roulette game?

### Reply 12:
If you order from them, the thing should be under warranty. So if there is something wrong, it should be fixable, although you would have to ship them back the defective thing at your expenses.What is the PSU you used that burned a bunch of S5 cards?

### Reply 13:
I received them with 2 Corsair CX850MThe 12v rail has 70amp over 840wI connected all 4 power connectors and followed Dogies' ""how to""My guess is something was wrong with them from the start... maybe they were poorly stored somewhere or so...I don't see how I could burn 2 complete s5's hashboards by just setting them up to my pool and letting them go at standard frequency using the PSU's that came with them in 48h...?I kept a close eye on the temp because I just got them, so I know nothing seemed to be reading out of the ordinary...It's really sad... this gives me a bad after taste of ebay...

### Reply 14:
They're not particularly bad PSU. Not ones you'd expect to surge volt like mad and burn hardware, so thats a bit odd. And if they came in cold, there could be condensation, so you would need to let them heat up and dry off before you plug them in but i'm not sure they would die like that, after a while. I'm stumped.If its any consolation, the boards are worth something for salvage.

","[
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  },
  {
    ""hardware_name"": ""S3"",
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  },
  {
    ""hardware_name"": ""S5 control board"",
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  },
  {
    ""hardware_name"": ""S5 hash boards"",
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  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Corsair CX850M"",
    ""hardware_is_owned"": true
  }
]"
10736,"Date: 2018-05
Topic: Bitfury: ""16nm... sales to public start shortly""
### Original post:
See we can agree on things. I agree with the bolded statement above!I also read the will open sales to public since their chip is too good and no one can compete against it. So to level the playing field they will sell to other companies and the public.This should be a lot of fun to watch unfold.

### Reply 1:
So is BitFury going to ""go to war"" with Bitmain during this cycle of the ""ASIC wars""? My limited view is that it was Spondoolies that did that last time, though my historical recollection may be wrong. Avalon seems content to hang out on the fringes and not really engage in a ""pricing battle"" with anybody. The PR could be correct, and they could easily limit demand by pricing their chips ""high"" and with order limit caps. The PR never said the chips would be plentiful or cheap.

### Reply 2:
One other small item. Based strictly on the Business Wire release, it looks like the BitFury device would be in the range of about 5.5W to 12.8W. That doesn't sound like a ""large chip"" to me. In other words it looks like they went ""lots of small chips"" rather than the ""fewer high power chips"" (i.e. Spondoolies Rockerbox).

### Reply 3:
I don't know the specs on whatever 28nm they had earlier this year, but their first two versions of ASIC were also the ""lots of small chips""; really, the Rockerbox is about the only large single chip which has really been successful.

### Reply 4:
Bitmain S7 is 0.25 J/GH.Bitfury claims this chip is 0.07 J/GH on the high end, 0.055 on the low end!Interesting to see how this plays out. With the 18% estimated diff jump on the horizon, S7 buyers are getting hosed.I should have quit mining when my Classic Avalon Batch 3 only returned 50BTC at a cost of 100BTC

### Reply 5:
I don't normally hold a grudge, but after being burned by Bitmain on the S2 I've been patiently waiting for someone to take their torch and shove it up their ass. I am excited at the possibility of this event occurring in the near future.

### Reply 6:
ALSO: This thread should be in the Mining Speculation forum since it's all just rumour at this point.

### Reply 7:
They say on their website they are selling. I would think that is not a rumor a lie maybe but not a rumor.well on their face book page <link> found this link<link> Vavilov, CEO of BitFury, said: We are very excited to launch mass production of our super 16nm ASIC Chip. The final results of our hard work have fully met our expectations. We understand that it will be nearly impossible for any older technology to compete with the performance of our new 16nm technology. As a responsible player in the Bitcoin community, we will be working with integration partners and resellers to make our unique technology widely available ensuring that the network remains decentralized and we move into the exahash era together. BitFury warmly welcomes all companies interested in joining our integration and reseller program.Jim Lai, President of GUC, said: We have worked closely with BitFurys experienced IC designers and we are glad to assist BitFury to achieve this outstanding result. GUC is proud that the BitFury-GUC partnership resulted in the first 16nm full custom tape-out for both parties.part of the facebook page is below

### Reply 8:
Maybe rumour wasn't the right word, but when Bitfury had their first 55nm pics and some information was posted here. I think once we see some data or pics of a chip/prototype it will be more than words.

### Reply 9:
I agree it is spec until they really sell some shit to us.I found a quote on the size of their new center let me look for it.from this link:<link> true to our commitment to minimize our carbon footprint, BitFury continuously works to increase the energy efficiency of our data centers. The company already relies on renewable energy sources to power our data centers with less than half of the energy overhead of the leading Internet giants, and continuously seeks new ways to further reduce greenhouse gas emissions. An important step forward in this effort is BitFurys deployment of its proprietary immersion cooling technology in its recently opened Tbilisi, Georgia, data center which supports 40 megawatts.*All figures mentioned above were measured with real silicon samples. Mileage for production devices may vary. Thanks to the physics of silicon devices, chips may demonstrate exceptionally low power consumption, or exceptionally high compute power, but not both at the same time.""The bold is me. I am sure the huge 188 195 197 and 215 block days this adjusment are them running the plant.As to it using a .07 watt per gh chip I do not think so. I do think they may be doing .15 with it. I <rest of post truncated>

### Reply 10:
they've been talking about this for months while others like bitmain and avalon sell miners and probably work on 16nm tooi'm also in the ""believe it when i see it"" camp

### Reply 11:
Is this what we were waiting for the pri<rest of thread truncated>
","[
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    ""hardware_name"": ""BitFury 16nm ASIC Chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Spondoolies Rockerbox"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Classic Avalon Batch 3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain S2"",
    ""hardware_is_owned"": true
  }
]"
23262,"Date: 2020-05
Topic: Using Wireless WiFi adapter that was for Desktops on Asic miners
### Original post:
Hi guys any of you had tried using Wifi Adapter that was for Desktops on your Asic miner? If you do please share how's it, i'm planning to do that but not sure if its possible because my router is quite a distance away and I don't want to get long ethernet cable nor wifi extender. P.S. my miner S9 Hydro

### Reply 1:
You can buy and setup an additional router to work in a Repeater Mode and then connect your miners to this router regularly by using ethernet cables.I have done this in my small ""lottery mining"" mining hardware setup.I have used Asus RT-N12 D1 for this purpose.<link> please keep in mind that wireless connection is not recommended for mining! If you want to avoid connection disruptions, please use a hard wired connection.

### Reply 2:
How much distance from router to miner?2 of these<link> this joining them<link> will give you 150 feet no issues<link> of these will do 200 feet have the switch in the middle will keep signal strong.

### Reply 3:
By ""Wifi Adapter that was for Desktops"" I assume you mean the little once that you plug into one of your desktop's USB ports? how do you plan on using that for a miner that doesn't have a USB port? and even if you somehow managed to connect it, you will still need to deal with the drivers, unless you know so much about these things, I don't think you will be able to do it.The closest alternative solution would be using Ethernet-to-Wi-Fi Adapter which functions like this:source is amazon IOGEAR Ethernet-2-WiFi Universal Wireless Adapter.In a nutshell this device gives a non-wifi device the wifi-capabilities, pretty much the same as the regular Wifi adapter on your desktop, but this one is Ethernet to Wifi as opposed to USB to wifi, there are many other brands so pick whichever you want, keep in mind that you will still need to use a network cable cat5/cat6, the wire can be pretty short it doesn't matter, if you can't pick the signal, you can extend the cable length, once done make sure you test the quality of the link by pining the miner's IP from a PC connected to the main router using the following commandCode:ping 192.168.x.x -tAllow the ping operation to work for 5-10 minutes an<rest of post truncated>

","[
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    ""hardware_name"": ""Asic miner S9 Hydro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Asus RT-N12 D1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ethernet-to-Wi-Fi Adapter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IOGEAR Ethernet-2-WiFi Universal Wireless Adapter"",
    ""hardware_is_owned"": false
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]"
23108,"Date: 2019-10
Topic: Antminer S9 March 4th, 2019 firmware experience?
### Original post:
Hi all.Bringing some S9s back online and noticed the Bitmain site has a <truncated> firmware release posted.Google seems to be failing me on any commentary however, and its been over a month. I'm coming from the 1117 release and was curious what peoples experience has been like. Is it recommended? Website claims the reboot problem has been fixed, which would be nice. See there is a newish ""Low power enhanced mode"" (came out in December firmware) that really seems to underclock the box. Only one review online that I've found so far though.

### Reply 1:
being running on some of my gears and everything seems great so far.temps wise = betterstable no random restartThe Enhanced mode comes with it by default so you have to disable it if you don't want itit brought the hashrate down to 9th to 9.7th but temps were super low.i didn't measure power consumption but assuming the temps drop so i think power wise there should be a bit of improvements. TL;DR ; I find the March 2019 firmware to be good and stable overall.

### Reply 2:
ok, ran tests on (5) different known good 14TH S9s. Low Power Mode with Low Power Enhanced Mode provides about an 11% improvement in J/Th, although at a huge drop in performance.That said, for folks like me with a lot of S9s powered off, its a big win. I can handle a ~32% performance hit, I'll just plug 32% more miners in!

### Reply 3:
these results look great for guys who have a problem with power cost, have you tried disabling ""Low Power Mode"" while keeping ""Low Power Enhanced Mode"" ? i tried and nothing changed for me, so was wondering if that's the same case for everyone, i tried on 1 miner only tho just for fun.

### Reply 4:
Been running this fw in 21 miners for 1 month and no issues so far, I recommend it

### Reply 5:
ok, updated about 90 machines, most went without issue.ONE is running at a fixed frequency, 600 MHz, and I can't seem to get it to down speed even though Low Power Enhanced Mode is toggled. Any suggestions? Should I just manually downclock it via <truncated> another one that I can't SSH into. The web interface works, but SSH does not.Any suggestions?

### Reply 6:
This isn't any suggestion but more of a question on the other S9's. Does ssh work on the others?

### Reply 7:
Yes, its works on all but two, so (88) Yes. (2) No. This prevents Awesome Miner from having configuration access btw. And since I can't SSH in, I can't manually add access.Update: This morning all the upgraded machines are refusing SSH access, which means I have no way to remotely poweroff, and tools like Awesome Miner can't change pools.

### Reply 8:
I now have all S9s working at a friend's place and unfortunately have no direct access to them, so can't test it out, but I don't remember testing SSH after the firmware upgrade since I don't really need it

### Reply 9:
Have you tried to factory reset the miner? If not try to reset it first it might enable the ssh back. You can follow the ""3 ways to factory reset the miner""

### Reply 10:
Any problems SSHing into your boxes? Other than 2/~90 I had problems with last night, all allowed it yesterday, but this morning, they are all blocking it. This is hobbling Awesome Miner.Based on 12 hours of running, I'm happy to confirm the need to reboot is gone. I'm not seeing ANY dip in performance over that time period.However, the disabling of SSH functionality, and apparently the ability to downgrade, even through the web app, is rather concerning. The Bitmain page indicates this release:I suppose this is what they mean by that.

### Reply 11:
So for a few hours you were able to SSH and then it went away?Are you not able to revert firmware? or did they just remove the previous firmware from the site so you no longer have it?If you reboot does SSH come back, as in is it a time lock? The S15 that I tested didn't have the capability to SSH in the released firmware, the code and programs to SSH were there just not enabled. Since we had no access to the systems we didn't go forward with more S15's and since the T15's were so similar never even thought of getting those. If this is the case it's possible they are trying to reduce the control users have over their own systems.

### Reply 12:
Hmmm, have to think about this. I actually changed the default pools (which requires SSH) PRIOR to upgrading the firmware, so perhaps not. Most of these machine have been unplugged since last November and had old pool choices. Knowing the machines would be rebooted when I changed firmware, I elected for change the pools first. So its possible SSH has been disabled since upgrading.Rebooted does NOT enable SSH. Reverting via the web interface also fails after a few moments with a ""Cannot find signature"" error, at least with the 1117 and prior versions. It will let me reflash the current version.I've notified Patrik over at Awesome Miner, since this seriously cripples his software with S9s. Hopi<rest of thread truncated>
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  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""14TH S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T15"",
    ""hardware_is_owned"": false
  }
]"
9735,"Date: 2016-03
Topic: pH Miners Launches Powerful Cryptocurrency Miners for Bitcoin
### Original post:
New York-based PH Miners Inc., manufacturers of cryptocurrency mining machines, has announced the launch of two new miners for the bitcoin and litecoin cryptocurrencies, which will allow users to process transactions and track the release of new digital coins.PHminers is comprised of specialists with many years experience in bitcoin hardware as well as litecoin hardware and has developed the Bitcoin Miner 25TH/s, which retails at $3,000 and comes with all the necessary equipment, from casing to control unit and cabling, to set up.The companys Litecoin Miner 1000MH/s also costs $3,000 and can also mine other cryptocurrencies. These digital-currency miners are guaranteed to deliver long-life service, with the company, which only accepts payment in bitcoin, providing an extended warranty of 15 years to cover any kind of failure.Both miners have been fully tested at multiple stages following manufacture to make sure they perform to the expected standards, and free shipping is offered to anywhere in the world, via FedEx or UPS courier services.Eric Franklin said, the CEO of pH Miners, stated: We believe that our products will have a high impact on the market, and were pleased to now mak<rest of post truncated>

","[
  {
    ""hardware_name"": ""Bitcoin Miner 25TH/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Litecoin Miner 1000MH/s"",
    ""hardware_is_owned"": false
  }
]"
16300,"Date: 2022-07
Topic: S19 Power Requirements
### Original post:
So I'm planning for a small farm setup to accommodate 25 S19J Pro 100T in the beginning with room to expand up to 50 units in the near futureAs per Bitmain, each unit draws about 3000w at 200~240v and the power supply has two inputs.A 20amp circuit at 240v can handle up to 3,840w at 80% load A 30amp circuit at 240v can handle up to 5,760w at 80% load Considering this, is it safe to use 20 amp circuits for each antminer instead of going for 30 amp ? Thanks all

### Reply 1:
i cant follow your calculation??? Theres something wrong.One S19 draws apprx. 13-15A.20A should be all fine

### Reply 2:
I run S19's and Whatsminer M31's (which draw 3700w each) - they are all on 20A feeds without any problems.20A is ideal for 19 series Bitmain. Next down would be 16A and that will have problems most likely

### Reply 3:
At 240v one circuit is 4800 for 20 amps and the other 7200, 80% out of those gets you 3840 and 5760, that 20% is for safety.20 is more than enough for an S19 and 30 is not going to be a solution to run two of them, go for simplicity and safety.

### Reply 4:
No if you get extended sag in volts.3400-3600 watts is max an s19 should pull210 x 20 x .80 = 3360 watts which is on the line of okay.Maybe you will never see an issue but it could be borderline on a hot summer day.Been there done that but our sag is lower than 210 volts we sometimes go to 190 volts.We have all gear on 30 amps due to this issue.So if you want to go cheap and do 20amp wire and breakers it is likely okay but may not be.

### Reply 5:
I would love to add a small but very important piece of information, do NOT oversize your MCBs, it comes at a huge risk, the main purpose of the MCB is to actually protect the wire from overloading, some people think if the breaker trips you can just use a large one and all your problems are solved, that is NOT the case.As for Phill's point, it's true, you do want to account for voltage drops, but IF the voltage drops too often and lasts for enough period of time that doesn't let you run an S19 on a 20A breaker, then your main concern would be the safety of the PSUs themselves, at 210V an S19 will draw 17A, which isn't bad for a 20A breaker since that drop should be temporary, so by replacing it with a 30A (assuming your wire size allowed it) it will run even at below 200v, but then your miners will RIP if that happens too often.

### Reply 6:
Cool cool, with that much power I can somewhat assume this will be a three phase power coming in. Three phase generally comes in at 208 pole to pole and 120 pole to neutral (WYE). If you bring in 480v you can get a 230 volt transformer but will loose the 120v capability (DELTA). Personally I would run the delta config tapped a little over 240 volts.

### Reply 7:
Is there a place where this is elaborated on? How many cycles of <200V would cause the miner to RIP? I'm asking because I'm interested in how many cycles a standard S19 PSU could be at 0V before RIP.

### Reply 8:
What you're saying is specific to the U.S. / North America. I have to worry about the 208 volt / 240 volt difference for sure and the delta/wye stuff. I also prefer 240v delta because higher voltage = more wattage available, plus less current through cables, so higher efficiency.The rest of the world can actually have 230v or even just 220v, not to mention 50 Hz instead of 60 Hz. Japan actually has just 100 volts! Residential buildings in some European countries actually have three-phase service.

### Reply 9:
Thanks for the reply.It sounds like some sort of intermediary device would be needed to help regulate the voltage so an immediate drop wouldn't occur. I've considered a standard UPS system but am trying to avoid excess equipment where I can.

### Reply 10:
You don't need UPS, you need a voltage stabilizer/ regulator, keep in mind these terms get abused by marketing, some label that tiny stuff you plug in the wall as ""voltage stabilizer 230v"" to trick you into thinking that they will step up the voltage if it goes below that while in fact, all they do is cut the output when voltage drops, that's more like ""voltage protector"", the stabilizer I am talking about consist of real transformer that is capable of actually providing a 220v output regardless of the input (of course within its' promised range).NT (Chinese) and Lioa (Vietnamese) make some good voltage stabilizers at a very good price, I have tried both but I prefer Lioa, they have different types and prices, the main difference would be the size in KW and the lower bound voltage, as it ranges from 50v to 150v, the ones that can bring 50v up to 220V will cost a lot more, just be careful with sizing these stabilizers, if it says 20KW you only get to draw that much if the difference between the input voltage and the out voltage is almost nothing, the lower the input voltage gets the less of an output capacity you get, below is a simple chart made by Lioa explaining thatSource: <l<rest of thread truncated>
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    ""hardware_name"": ""S19J Pro 100T"",
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  {
    ""hardware_name"": ""S19"",
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  },
  {
    ""hardware_name"": ""Whatsminer M31"",
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  },
  {
    ""hardware_name"": ""MCBs"",
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  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""voltage stabilizer/regulator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UPS system"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""NT voltage stabilizer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Lioa voltage stabilizer"",
    ""hardware_is_owned"": false
  }
]"
13773,"Date: 2022-05
Topic: SSH Unlock for antminer s9 firmware, anyone interested?
### Original post:
Hello,I was recently contacted by someone asking for a solution to unlock their miners after upgrading to the latest firmware.I was able to find a solution to open SSH and remove the signature check thing which was added by bitmain.I want to know if anyone would be interested in a tool to do that. I am not sure if I should ask for money for this because it took me30 mins to do it, but I might open an account for donations if you find it useful.If I get at least 3 people which need this, I will write the tool so it's easy to use and also keeps permanent changes.If there's more people which need this kind of solution, add what kind of features it should have, if you want to downgrade or justenable ssh at boot time.Shean

### Reply 1:
I wouldn't mind a guide for this.Provide an exe or similar and you'll get neg'd quicker than you would believe.

### Reply 2:
Yeah people will think software is a back door to be used later. And that the op hides with a newbie name.

### Reply 3:
The tool should be uploaded to gitlab or similar, along with the source code. Even better if its a simple python script or such that anyone could quickly inspect. I suggest you set up a donations address in your readme. Pick a suitable open source license of your liking and the community will appreciate it.The very next version of Braiins OS (open source replacement firmware) will provide a method using the sdcard to flash itself from the sdcard into the controller's nand, this would also achieve the same result (by wiping out the evil Bitmain firmware).And i believe someone here was even willing to give a bounty for it.

### Reply 4:
I am glad to see comunity concerned when a newbie post something out. I will try to think of an way to make this trustworthy. Providing source code will make it easy to fix in future firmwares or other hardware versions so this is not the best option.

### Reply 5:
Even if you kept it closed they would inspect it to find out what its doing to bypass their security, so in both ways the mere existence of the tool will make them react if they repeat the same mistakes of other companies with this hostile attitude.The difference is that the community wouldn't trust it, what else it might do after regaining SSH?Keep it closed and you will: Not stop them from ""fix it in future firmware or other hardware versions"", AND get distrusted by the community.If you want trust, release code. You have nothing to fear from Bitmain, they are your opponent anyway, but losing the trust from the community is final.And do note some determined person might also reverse engineer your tool and release an open source solution based on it ANYWAY. Why lose your chance? Embrace Open Source and earn the reputation it brings.Of course Bitmain COULD learn from computer history (at least since the 80ies) and drop the stupidity already. OR people could vote with their wallets and buy MicroBT, Canaan Creative, etc.

### Reply 6:
Hi,I've done some work on s15, opening ssh and overclocking it: <link> mod might work similarly, a video would be welcome to see that it's actually doing something.My suggestion is to keep this under control, small miners can open ssh with serial console easily if they need it badly, but it will be a pain for big mining facilities if this gets fixed in new hardware and firmware.Good luck with whatever you're trying to do, but make sure you're not releasing ""Just another fishing trojan"" and mean it when you say you want to do some good to the community.I somehow disagree with that. I though in the past that I will be helping the community by making a video on how to compile Bmminer because github docs from bitmain were unbiguous then after a short while, ""custom"" firmware were popping like mushrooms. Took the video down for a while but others started to repost the video cuz they saved it.Sometimes it's better not to mess with things because you might do more harm than the intended good.IMHO at least, other might disagree because they need such solution. I am part of the asicfreeware.io telegram chat where there's a bounty for opening s15.I actually been part of developing a solution<rest of post truncated>

### Reply 7:
Do you think people would have not done it even if you didn't post the video? You are very wrong. And yes, they put the thing on github, somebody else would have figured it out anyway, what with the actual developers of cgminer around here and all.But ok, no one can predict the future, or how others will react. Even if you both decide to keep quiet, somebody else might do it (or Bitmain drop its attitude). The serial solution is not that different to the sdcard method, except saving you from soldering a socket if the controller lacks one. In both you have to be physically present to do it. What the people offering bounties is about doing it remotely, so they can fix their large mining farms they foolishly upda<rest of thread truncated>
","[
  {
    ""hardware_name"": ""antminer s9"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""controller's nand"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s15"",
    ""hardware_is_owned"": true
  }
]"
23888,"Date: 2022-03
Topic: S9i hashboard chip numbers
### Original post:
Hello everyone.Recently i got an S9i hashboard which i tested with my text fixture and it was working fine. So, i replaced all the heatsinks with smaller ones. After that i test it again with my text fixture and it says Check chain = asicnum=30. My questions is which one is the 30 or if the 30 one got a problem somehow.<link> both cases i tested resistances and voltages in every chip of that line and its the recommended ones.Thanks for your time.

### Reply 1:
There is a diagram for this unit you just need to search it through Google.Next time learn how to search. Anyway check this link <link> the pdf file for complete troubleshooting.

### Reply 2:
Well, thanks for your reply but i have this repair manual and the schematic is not the same as my board thats why i post here in first place.I am asking for some advice regarding the picture i posted

### Reply 3:
Did you read the manual carefully?Use the signal there are 5 test points to check also check the back part all Asics is on the back your image is only showing heatsinks and test point. all Asics chips are on the back with a heat sink.Here's another diagram this diagram

### Reply 4:
This is how chips are numbered.<link> see only 30 chips the problem can be:Chip 30 - not weldet goodChip 31 - broken or not weldet goodLDO voltage of domain with chips 31,32,33.Check 5 test ponts voltage with test tool.Why you changed heatsinks?!?!

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21038,"Date: 2016-05
Topic: SP35 Stop Running
### Original post:
Hi, I am having a problem with my SP35. It hashes at good speed but it continuously stop running for a few seconds and then starts again. That is why it isnt mining what it should. Once it gets started again, It reach the 5.5 TH. What could be happening?

### Reply 1:
First step with miners, check the PSU. I know my GAW miners kept rebooting. so i swapped out the PSU and it was fine.

### Reply 2:
Already did that and keeps stopping. Thanks for your comment anyways.Dont know what else could I do.

### Reply 3:
Is it a miner that worked fine or is it new to you and always done this? What is your electrical setup like going to the SP35 do you have 220/240?I would agree looking at PSU first, and power second.

### Reply 4:
It is new for me and since I plugged in, it have been stopping every time. I have 220V and the Socket Voltage of the miner is 208/208 volt. Already switched the PSU and nothing changed. <link>

### Reply 5:
Its not showing any temperatures. I am not familar with the SP35 but maybe its not hashing because its trying to protect itself from overheating?

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16209,"Date: 2022-02
Topic: New block communication between Node and Miner
### Original post:
Hi All,I have very basic question regarding communication between Full-Node and Solo-Miner, to understand bitcoin mining mechanism better. Say I have full-node running on one computer and solo-miner (cpuminer) running on another computer. How the miner get to know that the current block miner is mining has been found by any other miner and it needs to discard current work and move to new block? Do miner needs to keep polling node for new block information? Or will node communicate to miner that new block has been found?Thanks,Sandy

### Reply 1:
miner program (eg. cgminer) have a longpoll_thread which is keeping polling to full-node (eg. bitcoin core) in a speific seocnds. When a new block come out, height of block header is different, then, miner program go to get new block header's data to form a new block header to be hashed out.

### Reply 2:
You are attempting a very useless project. Try reading the pinned message at the top of this area:

### Reply 3:
Thank-you @jack1cryptotalk007 for the comment, it was really <truncated> yes I do agree with you, I am just trying to understand how mining works under the hood.Regards,Sandy

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22764,"Date: 2018-10
Topic: Solution for ANTMINER S9 FANS SPEED Up & Down every 20 Seconds.
### Original post:
As a precaution, always do this porcedures at your own risk.Hey guys, just find a solution for this issue that was driving me insane like a lot of people with the same problem.I have two Antminer S9, one is 13.0 TH and one is 13.5 TH, both are Autofreq, the issue at hand is that the miner goes up 100% maximum RPM on both fans every 10-20 seconds, and that its really anoying specially with those with miners at home. I just figured out a solution taking a tread with the Antminers S7 that gave me the same solution when i needed to shut down the beep when the internet was down!, for those who had S7's you could notice that this beep was anoying from hell!. But some guy found the solution to shut down the beep by modifying the HTML code in the browser, No linux, no programming, just FN+F12 and follow some steps and the secret menu options will display. Just like the old miners S5, S7 that had this options.Let's start!First open your browser in this example i will use Firefox.<link> you need further help, please let me know.If you find my post interesting and solved your issue consider donating, the amount its not important just to know you are gratefull it's fine for me.BTC: <truncated>

### Reply 1:
Interesting, will this disable autotune? I like the idea of fixing the fan so it stops cycling, but I want to leave autotune on.

### Reply 2:
It wont disable the autotune mode. Just enable in the hidden funtions of the fan control and leave the freq just as it <truncated>

### Reply 3:
I played with these hidden settings also. The did seem to affect the intake fan but not the primary (and louder) outtake one. Bitmain seems to have written the autotune firmware to ignore the fan % setting on one fan (and most of the other hidden options). That is probably why they hid the options!

### Reply 4:
The intake fan is the one that spins faster, the exhaust side is the slower one.

### Reply 5:
How do you save the changes? I cant get the fan % to show up

### Reply 6:
Hello have you followed the proceedures on the images i published ? you have first to modify the html code in the miner configuration window when the % appears yoy put the number and then click save in order to save the <truncated>

### Reply 7:
yes, when I delete the word :none and leave it just as you described there is no fan option displayed on the tab still.

### Reply 8:
I'm developing a liquid cooled S9. I need a way to unplug the fans as they are not needed and I don't want to power them. Any suggestions welcome.

### Reply 9:
Easier wayAdd these line to <truncated> using winscp set connection file protocol <truncated> : <truncated> : ""90"",Then restart bmminer logging SSH using <truncated> restartWhen finished fans will run at 90% or whatever % bitmain-fan-pwm is set to.

### Reply 10:
Using what? Are there more detailed instructions somehwere?

### Reply 11:
Thanks so much. This may solve my problem by setting to 0%. Hopefully, the missing fans will not cause an alarm if set to zero.i'm not familiar with winscp and it's been decades since I used putty. I'll try to muddle through.

### Reply 12:
Please also delete the following line, then the options will appear in the panel.<link> me know if it worked.Regards.

### Reply 13:
nope, that wiped out my pool displys

### Reply 14:
GOT IT!worked in chrome for me, not sure why firefox wasn't working. now to test the fan setting!

### Reply 15:
update:It works great on my S9 13.5T Auto-tune miner. The interface does indeed set both fans (front and back) based on percentage. I've played around with the speed from 60% to 90% to optimize power draw vs hashrate. 75% is my butter zone!Thanks for this!

### Reply 16:
When you use this option, don't you also have to choose a frequency? What happens if you use this to set a frequency on an auto-tune S9?

### Reply 17:
I'm not sure... I didn't enable that option, since I figured autotune would over-ride it. Anybody else try it?

### Reply 18:
This works perfectly! I havent tempered with frequenzy i only changed the percentage of which my S9 works, i put it at 100%(since im using some kind of box with sound isolation and temperature got quite high around 87C). and at the moment(2h of working there were no problems.

### Reply 19:
Very Interesting, thanks for sharing, could you post the page print of that mod. I wasn't sure to mess with the freq. because all my all my miners are autotune. When you set the freq to xxx MHZ does the 3 boards set to the same fqcy?Thanks.GRIVERO

### Reply 20:
Do you know of a way to modify it so that it will work with no fan connected at all? It would be useful for immersion cooling setups.

### Reply 21:
I'm sorry that is way off my knowlegde, but I will ask a friend programmer who maybe <truncated>

### Reply 22:
Can you just set the fan speed manually to 0? If the firmware expects 0 then no fan should do exactly what it was commanded <rest of thread truncated>
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22407,"Date: 2018-02
Topic: Bitmain Antminer S7 Fan Connector Burnt Out Twice
### Original post:
I got this Antminer S7 used on eBay. I hooked it up and it was hashing at about 4TH for over a month, then one of the fans burnt out. I cleaned up the burn marks with alcohol and replaced the fan and ran it again and within a week the fan burnt out again.Has anyone had this issue with the S7? Should I just relist it on eBay for parts?Here's a pic of the burnt fan connector. <link>

### Reply 1:
Are the fan plugs tight on that port? It looks like a loose connection that is arcing. Used to have that problem on the Avalon 6s

### Reply 2:
It would be odd for a fan to draw more power than expected, although not impossible if the bearings are wearing out.You might want to consider buying a replacement fan for ~$15 USD and see if the problem goes away.

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11808,"Date: 2012-02
Topic: Windows 7 32-bit drivers for 7970?
### Original post:
...where can I find them? Are they shipping with the card (on cd)? Or ist there no Win7 32-bit support yet?

### Reply 1:
Have you checked the ATI website? O_o

### Reply 2:
I did, but it looks like you dind't. There are only drivers for Vista 32/64 and Win7 64. No XP and no Win7 32.

### Reply 3:
win7 is basically a vista.. you should try the vista32?

### Reply 4:
They are on cd. And i noticed i get almost extra +5% performance with them versus 64bit win7 and latest drivers from ati website.

### Reply 5:
<link>

### Reply 6:
O rly? HD 7000 Series is not supported by this driver....

### Reply 7:
I'd try these-<link>

### Reply 8:
I'd imagine that a 7970 driver for 32 bit windows would be basically worthless. Since the non-server versions of 32 bit Windows only have 4GB of address space, one 7970 would take up 3/4 of it and you'd have a whopping 1GB of system RAM available for use. If you added a 2nd card, you'd surpass the total available address space. You'd either have no system RAM available for use, or you just wouldn't be able to use more than 1 card.

### Reply 9:
Now that 12.2 is available this thread is obsolete, thanks everyone.

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16409,"Date: 2023-01
Topic: NERF antminer s9 hashboard to run 1-5 asic chips ULTRA low power
### Original post:
My goal is to somehow nerf a antminer s9 harshboard to only use 1-5 asic chips using the standard control board. Anyone know how this could be done?Firmware ? Any ideas welcome. The goal is to run it off low 5v power supply solar setup plug it to ck pool and let it ride . Geckoscience sticks have what 2 asic chips? Do not have the money to buy the gecko. I do have 1 s9 miner with three hashboards and 63 asic chips per board.Any ideas to help make this happen with what I have please.

### Reply 1:
You should read this topic : Open Source Bitcoin ASIC miner project that uses 2x BM1387 (Antminer S9) <link>

### Reply 2:
Have you tried to check the firmware from ASIC.to they do have firmware with s9 units where you can able to adjust the chip's frequency and power?I don't think you can disable the chip but their firmware has the manual option to set frequency and power maybe try to set it to the lowest setup or set it to zero maybe it will turn the chip disabled.

### Reply 3:
You are still going to have to get 12V to the hash boards and the control board not 5V. They are hard wired to convert the 12V from a PCIe plug to the voltage they need.After that you can pull 2 of the boards, like a lot of us do for converting them into silent space heaters.Then grab one of the custom firmwares that are out there to shut down most of the chips on the board.You would also need to figure out fan control, and a few other things, probably not worth the time and effort.-Dave

### Reply 4:
I don't think that's worth it / possible (the 1-5 chips part). I'd recommend selling that S9 (they're worth around $500), and getting the R909 for $600. Great little machine.It runs off of 12V, but I doubt that a solar panel of the size you need (100W+) only outputs 5V. They are usually 12V or higher.

### Reply 5:
You could have a small 2S battery as a buffer that's filled by a solar panel using like a $10 BMS, and then put a step-down voltage converter to get that 5V at the output.If it's 12V what's required, then just bump it up to 4S or even 3S configuration. In the latter, make sure they're charged around 4V, I don't what's the actual tolerance of working voltage range for these boards is, they usually have some leeway.

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24100,"Date: 2023-03
Topic: S19J 100 BB controller log - significant errors
### Original post:
Has anyone seen anything like this before? What has me confused is the across all the hashboard nature of this, so it has me completely stumped with where to begin. Any ideas?I cut some of the read / write fail. What is weird is repeats chain0, but then at the end is errors on Chain1 and Chain2 as well.[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Initializing cgroup subsys cpu[ 0.000000] Linux version 3.8.13+ <truncated> (gcc version 4.9.4 (Linaro GCC 4.9-2017.01) ) #36 SMP Mon Dec 26 17:10:49 CST 2022[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=50c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone[ 0.000000] Memory policy: ECC disabled, Data cache writeback[ 0.000000] On node 0 totalpages: 65280[ 0.000000] <truncated> node 0, pgdat c05d9000, node_mem_map c0631000[ 0.000000] Normal zone: 512 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 64768 pages, LIFO batch:15[ 0.000000] AM335X ES1.0 (neon )[ 0.000000] PERCPU: Embedded 8 pages/cpu @c083e000 s9856 r8192 d14720 u32768[ 0.000000] pcp<rest of post truncated>

### Reply 1:
There seems to be an issue with your hashboard related to EEPROM, and the logs show an sn error. Probably because the EEPROM is different or corrupted or maybe you have a different hashboard or recently replaced it with a new one?Can you try to test all hash boards one by one to find which hash board that causing this error?And hope that you can edit your thread it looks messy you can use the insert code tag to put all your logs properly.

### Reply 2:
First, I would try a SD flash. Try running the miner with a third party firmware like Braiins if this error persists. You could also rewrite the EEPROM with a skypro if you have a good bin file.

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23699,"Date: 2021-09
Topic: possible issues for ""find 0 asics"" on S17+ crap boards?
### Original post:
Hello guys,I've recently been digging in to repairing my S17+ hashboards that piled up here.What are all the possible causes for the famous 0 asic found issues other than bad chips? And I mean on the hashboard itself. Not the control boards, or psu related issues as I'm using a dc power supply and asic test fixture to test these hashboards.Thanks!

### Reply 1:
Some other reasons the hashbord might have shorted parts that could lead to 0 ASICs. Why not check the signals manually? ZeusBTC have a schematic where you can test all signals(CLK, TX, RX, BO, and RST) to find where the abnormal parts with abnormal signal then focus on that. Or you can follow the complete guide from ZeusBTC here <link> then read the part under ""V. Common Poor Phenomenon of Hash board and Troubleshooting Procedure"" which is related to this issue.

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22175,"Date: 2018-01
Topic: Antminer configuration page. HELP!
### Original post:
Hello guys, I can't access the configuration page of my Antminer on my PC which is connected to the router with a LAN cable, but I can access it through WiFi with my phone which is connected to the same router.

### Reply 1:
Is your Miner DHCP? Do you have the same IP range for both your wired and wireless networks? Make sure your PC is pointing to the correct IP, compare what it is on your phone vs what your PC thinks it is.

### Reply 2:
Well I don't understand a thing about these network things. When I use IP Scanner app, the miners don't even appear there, but when I go to the routers page on 192.168.1.1 they are there.

### Reply 3:
Have you tried to use program on your PC called ""Advanced IP Scanner"". Use that and it will show you, maybe there is some problem with your app, you never know :S

### Reply 4:
Ive only dont this once so Im no expert. Ill throw some stuff out there. Is your router and modem one unit? Assuming your Antminer is plugged into the modem/router with eithernet cable and not wireless. Google the IP address on the bottom of your modem given to you by your internet service provider.Log in using the name and pass on the bottom of your modem. You should see everything connected to it. Computer, cell phones, Antminer .Copy the IP of the Antminer into the google search bar.Use root for the name and pass to log in. This is what I did. I did not have IP Scanner but you can try that too.

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10706,"Date: 2018-01
Topic: Antminer T3+ coming out in China tmrw - 5000 units
### Original post:
Wow they must be dumping their bad BM1387 chips, those are the worst spec Bitmain miner of this generation

### Reply 1:
Actually a number of forum members have stated they like the T9's specs in that they're basically bullet proof and the chip temps are much lower than an S9. At least that's how the previous batches of T9's have been.

### Reply 2:
Oh i know, I manage over 1200 T9s and they are 10x as reliable as the S9. The problem is these are even less efficient then the original T9 at an absolutely insane price. Hence why I said this looks like a chip dump, especially if the rumors of bitmain announcing a new miner this month are true.

### Reply 3:
Antminer T9 Hash Rate: 11.5TH/s 7% Power Consumption: 1450W 7% Antminer T9+Hash Rate: 10.5TH/s 5% Power Consumption: 1432W 7% I'm not getting the new name, T9+. Since the hash rate is actually lower than before, and also the power efficiency is slightly worse than before.Maybe some updated changes in the miner design?I presume that there are less amount BM1387 chips in the T9+ design.

### Reply 4:
The T9 has 171 chips versus 189 in the S9

### Reply 5:
Yes.So maybe the T9+ model has something like 159 <truncated> for the information!Btw, can you fix the thread title?I guess you meant to wrote 'T9+' instead of the 'T3+'?

### Reply 6:
Wow, they're really trying to milk the puppy, They do realize people are buying at ridiculous price based on ephemeral profitability. They are aware that it will probably have faded before they even have to ship the units. Ruthless.Yes that basically click baited me here. ""The fuck is a T3"".

### Reply 7:
Very efficient way to attract people here to participate discussions.

### Reply 8:
Yea I'm curious to see what happens when all these new comers who are overpaying for miners realize that bitcoin mining isn't as cool/simple as they anticipated.I'm seeing A LOT of people trying to mine with their new S9 in their 250 square foot NYC apartment with only enough power to run 2 of the three hash boards.And a lot of people buying sidehack's stick expecting it to mine a whole bitcoin.

### Reply 9:
My 25$ Sidehack stick wont mine 1 BTC? Crap! Would would of thought I lottery mined with mine for a year but now its collecting dust, hah.

### Reply 10:
PT Barnum was right...and then a bunch of used miners will be on sale in the next few months (when it gets warmer).

### Reply 11:
This was a China release, perhaps these 5000 won't even be exported out of China

### Reply 12:
They'll be on AliExpress within days.

### Reply 13:
sorry bout that, just revised it ...

### Reply 14:
so true, bitmain states sales will start tmrw. and delivery in 7-10 days.

### Reply 15:
The new miner is rumour to be for btc or ltc?

### Reply 16:
BTC...theres no real competition for LTC miners right now so no reason to produce anything new.

### Reply 17:
Why did you pick T9 over S9 in your farm? Just curious, as T9 is very expensive per TH comparatively speaking.

### Reply 18:
It's 28 t1s! Wahwah.Sorry. Internet backbone humor.

### Reply 19:
Damn I was off - I always thought a T3 was .004503 OC-192sThanks for that.

### Reply 20:
Barnum is outdated - it's more like ""every second"" now not ""every minute"".

### Reply 21:
Quote is not verified to be Barnum's though. Maybe he stole the credit from a more gullible scammer ? (In case someone doesn't know what we're talking about <link> you're right, Internet and crypto have made the world a paradise for these people.

### Reply 22:
That's an OC3, they don't convert exactly but capacity is - almost - the same.True T3 is 28 @1.544mbpsMux up! Mux Down.

### Reply 23:
I've been running T9s for a very long time without any issues (touch wood)!They actually run warmer than an S9 and generate more heat. It is working under 18 deg C room temp and chip temp is always above 77 but never above 82.

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    ""hardware_name"": ""T3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OC-192"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OC3"",
    ""hardware_is_owned"": false
  }
]"
23823,"Date: 2021-12
Topic: Help with Antminer S9J Fans issue after replacing 2 new fans
### Original post:
Help with my Antminer, first it was gave me the ""Fan Lost or Fan Speed Low error"", I replaced 2 brand new fans however the fan speed is 6720 rpms but I still having the Fan error.I'm attaching the Kernel log, Do I'm missing something? I'm new on fixing or troubleshooting Antminer. Thank you in advance!Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: <rest of post truncated>

### Reply 1:
It seems the other fan is not detected only one fan check carefully if the exhaust or the intake fan is running and should both plug properly. If it's running fine the other option is if fans are running fine then you can disable the fan check by switching to Braiins OS or any custom firmware that can able to disable fan check. Heres the official thread <link>

### Reply 2:
Yeah both fans could be working fine and the fan rpm is just not picked up.@opI would go to the brains thread. I would get a micro sd card and run braiins. On the micro cardI would set the fan amount to 1 not 2 and it will run.good luck please follow up and let us know if the braiins fix works.

### Reply 3:
I checked both fans and physically they are working, I need to read more about how to do the Brain OS because I have no idea on how to install it LOL.

### Reply 4:
All guides are already on their documentation just click the link above and get some help there.Or read the whole guide on how to install braiins OS with an SD card below. - <link> the firmware you can download it here <link>

### Reply 5:
Hi Guys, want to tank you for all your guidance and help, it seems that Fan5 pins are very worn and specially one of the pins looks very bad. I did a clean out with Super Wash chemical and it works, however it worries me that the Fan5 may be not stable due to the contact pins. I need probably to change it. As for now my Antminer is working and I'm just running it on Low power mode for now. Do you know any place where they sell those Fan connectors for Antminer? I might be able to solder it my self.Again big kuddos to all of you!! Thank you!

### Reply 6:
That's good news if you found the issue.What exactly connector you are looking for is that the socket one? or the male connector? Look at this image belowYou can find that on <link> but the problem the minimum order is 50Or might be this one <link> not jumper the wire directly to the board?Check this post below as a reference

### Reply 7:
@yamezbond<link> believe it's this one from Molex.You can check the measurements on datasheet to be sureedit: whoops, now I'm reading forum with my desktop pc and saw that I linked a wrong kind of connector.Please see BitMaxz's message below for correct information

### Reply 8:
yes thats the one on the picture, I guess is the male connector. Thanks!

### Reply 9:
Gave you a merit for follow up postingPlease try loading a braiins sd card. I have a YouTube video.<link> shows the sdcard running a s9 modded for sound at time 1:17 or soyou can always go back to the ant miner soft ware

","[
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  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""micro sd card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Fan5 pins"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Fan connectors"",
    ""hardware_is_owned"": false
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]"
17067,"Date: 2012-03
Topic: 100% cpu bug with 12.1 drivers and cgminer
### Original post:
Long boring story short, I didn't have cpu bug with 11.12 drivers. I downloaded 12.1 now I have the bug. I tried <truncated> driversweeper and can not remedy the problem. Any help would be appreciated.Thank you.(running i5, win 7 x64, 6970x2 if that helps)

### Reply 1:
use -I 9kill CCC.exe

","[
  {
    ""hardware_name"": ""i5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""win 7 x64"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6970x2"",
    ""hardware_is_owned"": true
  }
]"
22538,"Date: 2018-04
Topic: Antminer S9 13.5T
### Original post:
Hi guys,I have 2 antminers S9 13.5T, I updated the firmware of those machines and I noticed they started to fail. Currently they one miner only detect 2 hashing boards but the third HB works, and the other one detect 3 HB but one it's not hashing.I investigate a lot, I have made a lot of tests and I couldn't find any phisical damage.I was wondering if someone has that version of Antminer, without firmware update, can you please share a backup of your firmare??? This because I started to think this is a S.O issue not a hardware issue.Please help!!Thanks guys.

### Reply 1:
First things first, what psu are you using?

### Reply 2:
Hi, thanks for your reply.Im usign the bitmain official PSU, I bought it together, from Bitmain.comAlso I have 5 PSU all from bitmain, and I did try to change to check if it was the PSU but it's not, because I have L3 miners and they work just fine with the same PSU.Regards

### Reply 3:
220VAC input or 110VAC input? L3 only pulls 800W, while the S9 will want more power than the Bitmain PSU can deliver on 110VAC.

### Reply 4:
Sorry, all runs with 220 including my L3

### Reply 5:
Ah, then probably not a psu issue. You might just have a wonky board unfortunately...

### Reply 6:
Make sure that you are not going over the capacity of the delivering equipment. Someone here said that they had the same problem and it turned out they were capping the capacity of the transformer.

### Reply 7:
Hi all,thanks for your replies.Actually I thougt it was the electricity but I discconected everything and just put one S9 to work and it behave the same way.and other very strange thing it's that all my miners stop working correctly at the same week.... thats very oddIf someone has that version of antminer S9 13.5T without firmware update, can please backup your firmware and share a copy, just to make sure the firmware it's working propertly. Because I did test everything except that..thanks

### Reply 8:
Just go on bitmains site and grab older firmware, you dont need someone to back it up for you.Stay away from the Nov 17th firmware, it has been confirmed that this version has a ton of problems.

### Reply 9:
Hi,I did, but I think that causes the issue, so that's why I want the original firmaware without updates...It's just for testing because I have tried everything so far except this...Thanks

### Reply 10:
There is no ""original"" firmware. The miners ship with whatever is most current firmware available, sometimes the default firmware is so new they havent publicly released it.

### Reply 11:
I see, so I guess I'm f**k whit those 3 miners... I guess I need to send those to bitmain for repair..Thanks guys!

","[
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    ""hardware_name"": ""Antminer S9 13.5T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3 miners"",
    ""hardware_is_owned"": true
  }
]"
21128,"Date: 2016-09
Topic: Request For help Ubuntu
### Original post:
hello All ExpertsI install in sours on my server how can config thsi file ./cpuminer -c <truncated> Put My address In side sudo apt-get install build-essential <truncated> git automake libtool libjansson* libncurses5-dev libssl-devgit clone --recursive <link> checkout <truncated> <truncated> --with-crypto <truncated> -help# to run cpuminer and load settings from example <truncated> configuration file issue this command:./cpuminer -c <truncated>

","[
  {
    ""hardware_name"": ""server"",
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  }
]"
16491,"Date: 2023-04
Topic: Mining .vs buying in a bear market
### Original post:
<sigh>#1 question is: What do you pay for electricity? Miners are very power hungry... Would you theoretically earn enough to at least pay the electric bill? If not - forget it.

### Reply 1:
I pay $0.07cents USD per kw.

### Reply 2:
Should I buy two S19j Pro's for $3,700 USD and mine it for the next few years or just buy $3,700 worth of bitcoin (0.16 BTC) ?My worry is that mining difficulty will keep going up and I will run out of time being profitable before I reach 0.16 BTC.At the current difficulty of mining, it will take over 250 days to mine 0.16 BTC with two S19j Pro's (assuming electricity is free) but the difficulty will be WAY higher in the next 250 days...I love the idea of mining because it allows me to dollar cost average into the market and there is no KYC involved.

### Reply 3:
So in 250 days, you would have earned $3700 (I went with your numbers) and spent $2500.That means you need 750 days to get the investment back and from there you start your profits, that is if there are going to be any since we're going to have a halving in the meantime. And assuming the price would double by then, then you also need to take into account that you have bought those $3700 worth of BTC now!There are other ways to avoid KYC, especially with these low amounts, since you're going to get like $500 a month.

### Reply 4:
So does the math tells us mining is dead?

### Reply 5:
No!It tells you that buying gear now with electricity at 7 cents/kWh is really risky.People that have access to cheaper gear, that have already ROI, that have cheaper prices per kWh don't have the same problems as a new guy, not forgetting the ones trapped who have already paid in advance a lot of stuff who would just lose more money if they would stop mining.With a hashrate increase of 10% last period and maybe again going positive for sure mining is not dead, but the profits from it are really anemic soon to be hospitalized

### Reply 6:
Both mining and buying have different risk tolerance and it depends on you what is your investment goal but buying bitcoin have less risk than mining because having a miner needs maintenance that can cost more and power rate changes but since you said it's free then it's profitable.The only problem that I think of buying bitcoin is that it does not direct generate earning as mining does.

### Reply 7:
Buying gear in a bear market is what everyone recommends. These S19j Pro's were selling for $13,000 USD at the peak so I am buying them at an 85% discount.7cents per kw is not far from what the large mining farms are paying.

### Reply 8:
Very doubtful profit, considering that the having will be in about 13 months<link> you have money to pay for mining and not sell bitcoins for several years?Do you have a guarantee that the cost of electricity will not increase?Even in my country prices are growing by 12-15% per yearThe cost of mining before halving is 14-20 thousand dollars, after halving the cost will be more expensive, and its not a bad decision to buy at 22 thousand dollars for bitcoin now, but use the using Dollar-Cost Averaging (DCA) Strategy.

### Reply 9:
I am not too concerned with the halving because that usually brings higher highs. I am more worried about the network difficulty.I can afford to pay for the electricity and hold. I have zero plans to sell until at least 2030.There is no guarantee that my electric company wont increase cost /kw but I live in a province that has the cheapest electricity in the world due to the massive hydro dams we have here (Quebec, Canada).What exactly do you mean by ""cost of mining before halving is 14-20 thousand dollars"" ?

### Reply 10:
Please don't go with this standardized cost of mining.This is just a gimmick invented by some bored blogger who had no article to write to make his quota.You can read what other miners, not just me think of it here:<link> on this board there are members with a far lower mining ""cost"" per BTC and I was one of them too prior to my contract expiring which had way better rates than anything you can possibly get in Europe nowadays. There is no such thing and for sure it ain't in some 25% margin, there are some who average spend 1/5 of a BTC to get one and there are some who mine at break-even point because if they don't they will have to sell all their assets to cover credits and loans.Of course, buying gear when it's 5x times cheaper is obvious, the thing is that not even that alone can sometimes offset the energy prices.Let's look at the 7 to 5 cents difference.3000W running 24 hours is 72kwh, in one instance it is $5.04 in the other is $3.60.Earnings right now are at 0.06 per th/s so that's $6.60 per miner.The first miner makes $1.56 second one makes $3, 25% drop in price, and the first miner mines at a loss the second one still makes $1.4.Same for a difficulty increase with linear p<rest of post truncated>

### Reply 11:
It sure is a scary time for mine<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S19j Pro"",
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]"
9888,"Date: 2016-07
Topic: Antminers and a USB 2.0 to Fast Ethernet ?
### Original post:
Has any one on here used a USB 2.0 to Fast Ethernet Network RJ45 Converter on a antminer, i have been thinking about do this just to see if it would work maybe even get faster speeds out of the unit. But the main reason i have I sit behind a comcast ip gateway and it is just a pain in the butt to get the antminers to work it.

### Reply 1:
Which AntMiner are you using?

### Reply 2:
i have the remains of two s1 antminers and so i was thinking about try this on a ant s3.

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    ""hardware_name"": ""USB 2.0 to Fast Ethernet Network RJ45 Converter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""comcast ip gateway"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s1 antminers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ant s3"",
    ""hardware_is_owned"": false
  }
]"
23048,"Date: 2019-08
Topic: Remote SSH into Antminer S15 (or S17)
### Original post:
I finally have my setup running but it is pretty important I can get SSH access into the antminer OS. How can I get ssh access into the S15 (or S17) ?Do I need to flash with custom firmware? The current firmware allows firmware update via uploading a file.Thank you.

### Reply 1:
No, you can't downgrade them 2019 firmware has signature restriction you can't downgrade them just like in s9. Bitmain is not releasing image/firmware yet for flashing these miners through SD card.I don't if you can enable SSH of these miners but there are some guides here on the forum. Check this below. - Antminer Hack S9 /S15 / S17 / Sx aso. SSH and so on for free - Restoring SSH MethodI don't know the 2nd one if it will work on both s15 and s17.

### Reply 2:
I'm a little shocked. They try to block customers from ssh'ing into devices they purches and should own? How is that even enforceable, can't you just swap the s9 controller and attach it to the s15/s17 hashing boards?

### Reply 3:
No i don't think they use the same controller. But i seem to recall there was an older S15 firmware from 2018 with a exploit that allowed SSH access back.

### Reply 4:
Yeah, but it was a published date not actually a 2018 firmware.

### Reply 5:
Given the fact that a huge portion of these mining gears are sold to newbies who abuse the use of SSH by over clocking their gears and doing things they don't understand, it has probably created a lot of work load on their support team, let alone the numbers of gears which are under warranty and they have to fix/replace because people want to hash at 50% or 100% more than the default hashrate.I was upset when I first updated my miners to the latest firmware , but then one member here (forgot who was , but credit goes to him) pointed out a similar point to what I have mentioned above, and after giving it a second thought, I can't seem to blame them for it.anyway way if you have a lot of gears and you really need SSH access, i saw a trusted guy on Telegram selling a a plug and play PI with a script that should unlock all your gears over night, you basically just have to plug it into your network and go to bed, later on you have full SSH access to all your gears, can't remember how much he sells it for, but i think Taserz or Scott would know because they are more active on telegram than I am , and if anyone is interested I can ask for them or invite them to the Telegram group.

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    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Antminer S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9 controller"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S15 hashing boards"",
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    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""PI with a script"",
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]"
11058,"Date: 2021-12
Topic: in short, is investing in used hardware worth it for mining?
### Original post:
So I'm running a poll for a friend of mine.in short, is investing in used hardware worth it for mining? This may be used as a study on a large scale study about computer hardware at MediaPeanut (A friend of mine is publishing there)

",[]
23724,"Date: 2021-10
Topic: Innosilicon T3 Pools not updating ...solved. Advice for fast innosilcon response
### Original post:
update...the web interface says that the pools are empty, not conecting, tunning.......but slushpool its throwing the 50th/sproblem solved in a certain way

### Reply 1:
Hi guys everything for the repair of the fixed firmware or nonupdating pool is in email steps on daily basis but if you have all the info in the same night, next day you have your firmware as i Did. so here are the steps to fix the updating pools problem, they call it Fix firmware, not hacked. - So first you need the serial number o picture that its on a side, starts with an N o R and your Purchase Order Number. they wont asist you if you dont have this- the macadress, is in the overview secction in the miner menu. you have the Macaddress and controller versionif you can not access the miner, from the router you can get it the Macadress or a simple Nmap scan. if login to the miner not possible or you dont find it try just to have this miner alone in the network. it hides or doesnt connect. this one uses the 192.168.1.54, i might difer on your network or your miner, just leaving some extra tipsyou need to get the DNA File, this is the email instruccions from innosilicon and link for the tool to get the filesend the info and the fileand just wait for the unlock firmware to be sent from <truncated> are answering email and sending files but for last you need to upgrade the miner so inn<rest of post truncated>

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    ""hardware_name"": ""Innosilicon T3"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  }
]"
4120,"Date: 2012-06
Topic: For all your USB Needs
### Original post:
<link>

### Reply 1:
yea, when i saw this is the newsletter yesterday (from thinkgeek that is) i imediately wondered how good it would be for a batch of FPGA's.course with that many cables ya'd need some sort of ducting just to handle then all and keep them untangled...

### Reply 2:
Wow it's $90!

### Reply 3:
The power adapter is only 5V @ 4A. That's only ~20Watts. How much power from your typical FPGA is taken from the USB port itself?

### Reply 4:
to my knowledge, none. they have seperate power usually, since they each need about 20watts. i'm going off what i've seen/read here though.

### Reply 5:
It looks like a switch..... I doubt all USB ports can be used at one time.

### Reply 6:
would something like this: <link> good for 8 asic's? just planning ahead in case BFL delivers in October.

### Reply 7:
until we know the actual power draw the jalepeno's need from the usb port, it's a guess. but since that is a power hub, it should suffice. again, guessing though.

### Reply 8:
beware tho, many USB hubs are infact daisychain internally.... and some USB controllers dont like that.

### Reply 9:
Yeah, I'm guessing (hoping?) that they had the foresight to build in a connector for external power.

### Reply 10:
It looks like 4A extra.

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  },
  {
    ""hardware_name"": ""USB hub"",
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  },
  {
    ""hardware_name"": ""power adapter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""jalepeno"",
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]"
10036,"Date: 2016-10
Topic: [ANN] Avalon ASIC chip distribution
### Original post:
BenTuras; 500; 43; <truncated>

### Reply 1:
Just loved to have the knowledge to know what to do with those chips and how to solder BGA without a skittle... :pThe price is great!I'd love to buy 10, but... without knowledge they'd be useless.But still grabbed a bag of popcorn, since I love to see people have success and learn something with it!

### Reply 2:
They're QFN48, I believe, which is a hell of a lot easier to solder. You can even get sockets for those and plug them into a breadboard. Cooling might be a problem, but it would be possible to have an arduino (or similar) based 1 chip mini miner.

### Reply 3:
Zefir. Just to be clear. Are you reselling chips at the same cost you purchased them? Ifso, what is your motivation to buy 10,000 chips and distribute them at the same price (no profit)?

### Reply 4:
It is clearly explained in post. Please read it carefuly before you ask.1. No he is not reselling the chips at same cost. He is adding extra which is quite normal and acceptable. Do you have 780 BTC to spend? And take all the risk for your investment alone? I guess no? Same as me..

### Reply 5:
Seems reasonable price. Can you consider the escrow with john as an option? 10XPS: Or john recommendation (vote) will be enough for me Just him PS: Zefir I am in. No time to wait john and i have cheeked my PM's. I missed some info there because of the excitement

### Reply 6:
Volatility does suck.

### Reply 7:
Well, it is (and it was) quite clear that we have not seen the bottom yet.

### Reply 8:
Now you totally grabbed my attention!!! Tell me more, please!I could develop one in a breadboard, add another chip, test and after that scale up?I'd love a design similar to a mainboard with controller and communications and the, slots where I'd put each chip or pair of chips or something.Even so, I think I lack a lot of knowledge here.I can't even put an MSP430 to work on my projects...

### Reply 9:
im in for 500 chips - details in PM

### Reply 10:
In for 500 as well. Give me a few days to transfer funds around and I will send them over promptly.On a side note, I want to thank you guys for everything that you are doing!

### Reply 11:
Im interested, but Im worried about the shipping from Switzerland. Tax and customs from CH always gave me hell.Would it be possible to pick up the order in Switzerland?Im declaring interest for 100 chips

### Reply 12:
He is helping everyone who wants to DIY project kind of thing... We are very thankful for what he is doing

### Reply 13:
I buy 390, Because I havn't enough btc.... but now my btc is transfer from mtgox. I'll send later

### Reply 14:
You think I should have asked for more than 9.9% as risk-compensation? I wish I did, but I offered to support the upcoming open source projects with what I have and that is it. Also please note that on top of this surplus buyers will be charged the effective fiat expenses for taxes, shipping and handling.Volatility is for traders. I just wanted to use Bitcoin for what it is meant and this time it failed royally - if I had waited 2 hours with my order, I would have paid $30k less But ok, it is not the worst method to go long.Usually you are charged your local VAT, which assuming you're from within the EU is somewhere around 20%. Not sure if it pays off to drive to Switzerland for a local pick-up, but yes, it would be doable.Please note: following additional clarifications appended to OPWho should buy and who should notPlease note that this chip distribution is meant for DIY folks only. That is, if you want to build your own mining boards, either from scratch or based on the reference design Avalon announced to release in May. If you want to buy ready-to-mine boards as developed in the original DIY thread, please do not order chips from me, but instead contact the developer of your c<rest of post truncated>

### Reply 15:
Im in for 100 parts, when i know whether or not there will be any way to get it pre-assembled, as i have no clue how to do that. anyone know ?

### Reply 16:
Please follow the additional clarifications I added above.

### Reply 17:
Confirmed orders:Code:Chips BTC Address 500 43.00 <truncated> 30 2.58 <truncated> 172.00 <truncated> 100 8.60 <truncated> 10 0.86 <truncated> 10 0.86 <truncated>

### Reply 18:
DIY means ""Do It Yourself"". Pre-assembled means ""Someone else do it"". This is a DIY thread. On another note, I notice people buying 500 - 2000 chips, are you really planning to connect 2000 chips yourself? I have a half idea to DIY as well, but the task of actually soldering and whatever else will be involved with this number of tiny chips is daunting.EDIT: Kudos to OP for both this and helping the other crew keep in stock of chips.

### Reply 19:
You have my deep gratitude as well. I was ready to purchase 10,000 chips but I'm a sissy and need more information than what's offered on their order page before taking that kind of risk and it doesn't <rest of thread truncated>
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    ""hardware_name"": ""BGA"",
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  },
  {
    ""hardware_name"": ""QFN48"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""arduino"",
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    ""hardware_name"": ""breadboard"",
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    ""hardware_name"": ""MSP430"",
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4237,"Date: 2012-12
Topic: [Announcement] Avalon ASIC Development Status
### Original post:
Yep in some countries there can be different customs, as for courier services like DHL the price for shipping is added to the customs. EMS is taken as the post service and the shipping via post is deducted from the base for the customs.The best way should be to add some switch to the shop to choose prefered shipping service.

### Reply 1:
i prefer EMS in my country. i remember DHL to charge a high fee at customs.Can we choose please?

### Reply 2:
EMS is my preference as well...

### Reply 3:
I've sent emails but gotten no responses, does anyone know what we're supposed to do if we presently own Icarus but still want to reserve ASICs? Thanks.

### Reply 4:
I've not gotten your email, be sure to send it to <truncated> to ensure proper processing, or go on our support website <link> directly to open a ticket in the future.To answer your question, we will open the orders for trade-in customers later this month.

### Reply 5:
Yes, choice will be offered. I think the correct wording for this announcement is the added option to ship via DHL, but in addition DHL will be the default option selected, if you wish to use EMS, some actions will be required of the customer.p.s.Still recovering from Sandy, will provide more updates soon.

### Reply 6:
There will be no restrictions on what Kano and Yoch can report.

### Reply 7:
I want to know how many doorknobs are located inside their office. I want to know how many steps it is from the farthest employee parking lot to the front door. How tall are the ceilings? How often are the paper towels in the bathroom refilled? Is it all the same color flooring throughout the entire building?Answer me those, and then maybe I'll believe BFL is real.

### Reply 8:
So when is this thing happening Josh?

### Reply 9:
Hi, could you please post your die size so I can list your product's -factor? BFL has posted all the information needed to compute theirs.

### Reply 10:
You Crazzzzzzy man

### Reply 11:
3.882 mmp.s.while I understand your H/s/nm theory. The reality is you can't quiet measure things like that.

### Reply 12:
And the other necessary piece of information: how many of these 15(mm2) chips are in your 66Gh/s product?

### Reply 13:
Only necessary for the manufacturer ...

### Reply 14:
Full Disclosure: This account is not one of my sock puppets, albeit I like how he thinks.

### Reply 15:
I'm not?

### Reply 16:
Meanwhile on my not very expensive D-Link DGS-1008D GBit switch my desktop is connected to:<link> <truncated> mtu 1500 inet xxx.xxx.xxx.xxx netmask 255.255.255.0 broadcast xxx.xxx.xxx.255 inet6 <truncated> prefixlen 64 scopeid 0x20<link> ether xx:xx:xx:xx:xx:xx txqueuelen 1000 (Ethernet) RX packets 62921947 bytes 33087058738 (30.8 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 63627380 bytes 48378527420 (45.0 GiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 016:10:52 up 4 days, 2:51, 33 users, load average: 1.36, 1.43, 1.48Yep I prefer switches ...

### Reply 17:
Kano is trolling, but he's a constructive troll, so his message is worth replying to. I was trying to find a link to the source code of utility I used for testing, but I can't seem to locate it. It was an offshot of ""ttcp"".1) RX/TX statistics in many modern NIC are always zero, unless explicitly enabled. Somebody explained to me that it has something to do with passing WHQL certification. There are (or were) apparently two levels of it: normal and <truncated> At the ""normal"" level it is apparently much easier to get the ""compatible with Windows X"" certification if errors are reported only in specific circumstances. To get uncensored statistics you'll may need to place the chip in the ""enterprise"" or ""diagnostic"" or ""cluster"" mode. (Not to be confused with 802.3ad link aggregation or similar stuff).2) To get a real feel for real packet loss use ""ttcp"" and monitor ""netstat -s"". For deepest understanding use both TCP/IP and UDP/IP mode with various buffer sizes.3) There used to be a version of ""ttcp"" that supported one-sided testing by connecting on the remote side to the ""simple IP services"": echo, discard, chargen. Nowadays they need to be enabled explicitly. They aren't really usef<rest of post truncated>

### Reply 18:
Well - if newer kernels hide errors - my older one (name hidden to protect the innocent) doesn't seem to:... my internet connection (linux box bridged using rpppoe) that runs through an old switch to my ADSL modemeth1 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx inet addr:10.xxx.xxx.xxx <truncated> Mask:255.255.255.0 inet6 addr: <truncated> Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:601281065 errors:37121 dropped:76234 overruns:37121 frame:0 TX packets:565768303 errors:0 dropped:0 overruns:19 carrier:0 collisions:0 txqueuelen:1000 RX bytes:397893249118 (370.5 GiB) TX bytes:282719849762 (263.3 GiB) Interrupt:18 Base address:0xa000 07:36:19 up 112 days, 15:43I see<rest of thread truncated>
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16121,"Date: 2021-08
Topic: PLEASE HELP What miners should i buy ?
### Original post:
The first thing I would have to tell you is that your prices are a bit off, if you don't trust your source 100% they are probably scammers, trade assurance is B.S, and I don't know what PP will do if the seller proves they shipped you the miner you ordered which just so happened that it's in a miserable form, but, do what you think best.Now, speaking of quality and only quality, the M21s is more robust than all the Antminer gears you mentioned by a few orders of magnitude, but then you talked about overclocking and what not, unfortunately, you won't be able to do that freely on whatsminer, whereby on all the Antminer/Bitmian gears you mentioned over clocking to extreme measures is possible using custom firmware, in fact, the S17 pro has a turbo mode which overclocks the miner using only the stock firmware.

### Reply 1:
I wouldn't buy antminer s17+ . It is out of commission often. By an large, all the 17th range has some constructive flaws that result in asics' break. However if my only choice were antminer from 17th series I would buy s17 rather than s17+. because it is a bit more reliable and if you are lucky it will last longer. IMO, good instance of asics from Bitmain is always a roulette.

### Reply 2:
from a hashrate point of view the T17's are the winner, because you get 8 of them @42TH. It gives you a total of 336TH.The S17+'s give you a slightly higher hashrate at 350TH, but keep in mind that if one of these breaks, you temporarily lose a larger chunk of hashpower than the equivalent T17 breaking.

### Reply 3:
Hey guy's i want to start mining with 5 asics for btcAlso looking to buy a small Immersion system so i could avoid the hassle of air cooling as i live in very hot country. also offering to safely overclocking all miners to 30-50% my choice is 5x Whatsminer M21s 50 TH 2,500$or 8x Antminer T17 42TH at 1,700$5x Antminer S17+ 70TH at 2,500$5x Antminer S17 PRO 50TH at 2,500$what would you guys choose ? are Antminer really not reliable ? please give me some feedback.for those of you who are going to ask how these prices, These are from reputable sellers on Alibaba that accept trade assurance and paying with PayPalThank you[moderator's note: edited out excessive new lines at the end of the post]

### Reply 4:
Since all of these are used and probably coming from a hosting farm in China, include the cost of cleaning them. You do not want to put a dirty miner into an immersion system so there is expense or skill there. Also, make sure you have a good asic repair tech on speed dial. These are old / used, they will have issues. You don't want to be down for weeks to fix a bad controller or hashboard.I have heard good things about the Whatsminer, more than the 17's so believe what you are reading above. Am curious whose immersion system you are looking at. Is it more of a generic construction or ? Single loop or dual loop?[moderator's note: fixed broken quote]

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15756,"Date: 2016-05
Topic: Need Suggesion from Mining Experts !
### Original post:
I don't know if this is the right board to post this. I am using bitcoin from last 3 years and i am from a country where bitcoin is banned.But the electricity cost of my country is way too low or i can use electricity all day free.But i don't have any information about mining.I only that mining bitcoin needs a mining hardware that's it.Questions : 1Is it possible to get mining software as bitcoin is banned here? will custom release?Question : 2I have no knowledge about mining just know need hardware.Then how to set hardware to start mining? I am interested as electricity is way too low or i can get free.Any input will highly appreciate !Regards

### Reply 1:
Mining is actually fairly easy these days without a lot of difficulty. You just need some basic IT skills.""Is it possible to get mining software as bitcoin is banned here? will custom release?""You don't need any software, just hardware. ""I have no knowledge about mining just know need hardware.Then how to set hardware to start mining?""Get your miners from Bitmain <link> put together 2 videos for setting up the S7 miner:<link> your miners and connect them up to power suppliesConnect your miners to your networkConnect them to a pool, I recommend <link> but you can use whatever pool you want.Someone put together a nice guide here:<link>

### Reply 2:
The first decision you have to make if you are set on becoming a bitcoin miner is whether or not you want to host your own hardware. It only makes sense to host your own hardware if you are either able to get free electricity or your electricity cost is less than the average electricity cost globally. To give you some perspective, the average electricity cost in the US is about 12 cents per kilowatt-hour, compared to China where the electricity cost 8 cents per kilowatt-hour.

### Reply 3:
where do you live, because you say it's banned? if it is like venezuela or other countyr like bangladesh it's better to avoid, you may end in jail thereusually besides this you need to look at bitmain, they sell the antminer s7 for cheap and with your electricity it would be profitable an you would reach roi, in a reasonable time frame

### Reply 4:
I've heard that Bitcoin mining was banned in some countries but I still can't imagine someone really goes to jail for it. Were there such cases actually? I hope not, but unfortunately I may be wrong.

### Reply 5:
Ecuador is another place where bitcoin is banned.Jacob

### Reply 6:
Really?? They started their own coin though didn't they??<link> are other coins you can mine with video cards if getting a bitcoin miner shipped to you is not possible You can exchange them for BTC at various exchanges & keep a BTC wallet on your PC/laptop.Not sure if you can use localbtc.com to cash out your BTC to gift cards or paypal though.

### Reply 7:
thanks for the response guys !I think i am interested to mine lite coins with video cards.Can anyone guide me how much will it cost to set up? i want to mine as much as possible to mine per day Thanks again

### Reply 8:
Why not look into mining ethereum with gpu(s)? Here's something to get you started: <link>

### Reply 9:
If you mean ""coin"" as in crypto-currency then no:<link>

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16090,"Date: 2021-07
Topic: Chinese Bitcoin Mining Company Delivers First Machines to Kazakhstan
### Original post:
After shutting down in Sichuan, a Chinese firm has successfully shipped 300 #Bitcoin miners to Kazakhstan. Over 2,000 more are on their way.Sounds Good <link>

### Reply 1:
This is not good from energy mix perspective. The region of Sichuan was using energy from Hydroelectric (renewable). This will mostly move to dirty energy sources.Coal represents around half of Kazakhstan's energy mix (50% in 2018), followed by oil and natural gas (both with 25% shares).

### Reply 2:
I was predicting this would happen back in April when I researched all other alternative countries for Bitcoin mining and Kazakhstan was on top of my list because of low cost of electricity and they are also bordering with China.Next countries will probably be Kyrgyzstan, Tajikistan or Mongolia, and countries from South America that are more distanced from Chinese production of ASIC miners but they have other benefits.It's not all black and white with mining, but I expect more strict worldwide regulation in July so everyone should be prepared for that.

### Reply 3:
Not good! We wouldn't want Chinese miners to enter the bitcoin market again. No matter the location, the miners will be under Chinese control which is not really desirable. The market will be impacted at first but will rejoice later. Since the Chinese have their own version of everything, even Google, they must enjoy with their own version of digital yuan. Or they can create their own version of bitcoin and can name it as shitcoin!

### Reply 4:
I don't see any issue here. Coal generated electricity is 100% legal in Kazakhstan. And therefore I don't see a reason why we should worry about it. And in case you are worried about the carbon footprint, then let me remind you that fighting climate change is not our sole responsibility. First let the top polluters such as Saudi Arabia and China reduce the consumption of fossil fuels. After that we can think about using more green energy for Bitcoin mining. But the most important story here is that the mining rigs were moved from China to Kazakhstan without any issue. This is a very encouraging sign, and hopefully the remaining miners in China would actively consider this possibility.

### Reply 5:
In my own idea, moving the mining companies can not be a good idea and it's just temporary solution, who knows what's going be happen in Kazakhstan during the next years? how stable is the government? maybe after one year Kazakhstan ban bitcoin mining too. Even if miners use renewable energy, the governments will still ban bitcoin mining, because do not agree with the privacy and availability of bitcoin, any government see this freedom can be dangerous for their banks and economic system, so they will try to fight against it. A big share of money they earn come from the tax they get from people and the money you invest in banks, by using bitcoin they will earn less tax, less investing on banks. So, they will fight against bitcoin by suspending mining companies.

### Reply 6:
Finally, businesses are moving out of China to other countries. I think it's a good long-term decision because China is very unstable when it comes to crypto and mining policies, so risking all the time and hoping that you won't be shut down isn't a good business decision. Plus, developing countries should see this as an opportunity to boost their economies by welcoming crypto mining companies and introducing favourable terms. I hope my country will do the same.Well, there's no reason to think it's less stable than China, so it's worth a shot.

### Reply 7:
If China will not support bitcoin atleast, this is a good thing that they do to still do perform bitcoin adoption.Kazakhstan should really regulate cryptocurrency in their country properly so that they can see how profitable and valuable it is in the market.Hoping that more countries will become open to mine bitcoin and benefit it.

### Reply 8:
I have come across a article where ASIC mining machines manufacturers were getting calls from Chinese miners asking next destination and they suggested them Texas and Kazakhstan as alternate option because of cheap electricity and government not too strict on crypto related activities.Miners have shifted to next base and Canaan one of big manufacturer of ASIC machines have setup big base in Kazakhstan.Many more will follow the same path as in past governments has also shown some signs of regulating cryptocurrencies like bitcoin and if it is possible then it would be great for miners.The prime minister still has 3 years of office left and who knows what happens next.We can only hope for the best out of it.

### Reply 9:
You are using the word ""we"" if I might ask who is ""we""? why'd you presume some of us wouldn't want specific people not to freely use Bitcoin?There is a thing called Bitcoin neutrality1. It does not give a damn about anyone's views or any terms in affiliatio<rest of thread truncated>
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16366,"Date: 2022-11
Topic: BitmainS19pro ordered on 9/22 shipped on 10/13 8 days early. Waiting for coupon.
### Original post:
Nice to see it ship early. I await the 30% off coupon for next purchase.Also I will be billed import tax of 600-750So 2083 + 750 = 2833 for 100th and the 30% coupon.I would like to get another unit lets see 1950 x .7 = 1365 + shipping + import duty likely 2k for it.so 200th for about 4833. meh its okay I guess.it would be nice to get the s19 by saturday more likely monday.

### Reply 1:
An excellent plan considering that even taking into account the price reduction on the A1246 to $3072, after Canaan introduced the new flagship A1366, $4833 for the 200th is better than $6142 for the 192Th.

### Reply 2:
We have some CanaanI used them for almost 10 years.400 series700 series800 series the 842 was a nice unit900 series 1000 series1100 series1200 seriesbut I did not realize they made the A1366 have to look at it.The room is almost filled.maybe we do the pair of 100th from bitmain and try the A1366 from Canaan

### Reply 3:
It is not clear, however, how much the upcoming A1346 / A1366 miners will cost, for wholesalers for the purchase of 100 pieces in Q4 2022, Canaan offers to get a special voucher.<link>

### Reply 4:
So no coupon and worse I get a reply from bitmain asking me why am I due a coupon.I have to say when things go wrong it is sad.I will continue to post to let you know if they give me this coupon.The reason I purchased the s19 pro was to get the coupon.At times life can get you angry but I will be persistent ,polite and professional.@ bitmain please send my coupon after you read this.

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21180,"Date: 2016-11
Topic: My antminer S1 doesn't start mining
### Original post:
I am a begginer in Bitcoins, I bought a antminer S1 in second hand to start to give the first steps in Bitcoins. I did everything <link> without the change IP. I connect the antminer S1 to my Wifi network, and it is send and receipt information, I configured the miner and the works. But in the pool doesn't start miner, and in the miner status I don't see anything.What is it missing to start to miner? In the system log, it is the next information:Mon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led WANMon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led WANLMon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led LAN1Mon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led LAN2Mon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led LAN3Mon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led LAN4Mon Dec 2 03:28:10 2013 daemon.info sysinit: setting up led WLANMon Dec 2 03:28:10 2013 kern.info kernel: [ 23.530000] usb 1-1.1: USB disconnect, device number 3Mon Dec 2 03:28:11 2013 kern.info kernel: [ 23.570000] bitmainbl 1-1.1:1.0: USB Bitmain asic #0 now disconnectedMon Dec 2 03:28:11 2013 daemon.info sysinit: command failed: Invalid argument (-22)Mon Dec 2 0<rest of post truncated>

### Reply 1:
never use wifi !does your wifi router have ethernet cables?what is your wifi router like 192.168.1.1or 192.168.0.1s-1 is set to192.168.1.? if your router is 192.168.0.1 you need to alter some settings.

### Reply 2:
yes, my router has ethernet cable:The router's IP 192.168.1.1For Wifi the antminer is using 192.168.1.3 but in wan is the original IP 192.168.1.99What I need to do?thanks for your help.

### Reply 3:
Problem is S1 is not able to communicate to NTPD server. Please check your network setting to allow traffics to and from NTPD server back to S1Very 1st Post mid-way through. NTPD trouble shooting info there!<link>

### Reply 4:
I did like the site said:I change the NTP server candidates to that <truncated> it still not working... Sorry, but I am very dumbing in this area.

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4174,"Date: 2012-10
Topic: FPGA mining using a Raspberry Pi
### Original post:
Some quick instructions on how to use the Raspberry Pi for mining using FPGA's.I wrote this one since I got a few private messages asking for tips, so it might be useful for some people.I'm mining using a single Cairnsmore-1 using cgminer, but the instructions should also work for any other FPGA miner.First of all: make sure you have the maximum amount of memory available for the Raspberry Pi system.By default the PI has 128MB available for itself, and 128MB for the GPU. If you're only mining with it, you don't want to waste that memory reserved for an unused GPU.The following command will make 224MB of memory available for the Raspberry PI (execute under root or using sudo):cp <truncated> <truncated> some pre-req's for cgminer:apt-get updateapt-get install autoconfapt-get install <truncated> cgminer (you can also use other miner software) and install. In the cgminer <truncated> --disable-opencl --disable-cpumining <truncated> installInstall screen so you can disconnect and reconnect to the mining session later on:apt-get install screenInstall some USB libs (might not all be needed, but I installed them just in case):apt-get install libftdi1apt-get install libusb-devNow, putting th<rest of post truncated>

### Reply 1:
Of course is usefull, I've received last friday mi RaspBerry Pi, I've installed cgminer and bfgminer, and seems to work but I have no FPGA to test, ASIC's are on the way.Regards

### Reply 2:
thx for the summary, will look into it later this week

### Reply 3:
I plan on trying this later this week. I had my pi setup with a MMQ and it would run for about a day before locking up. I'll try your process and see if that solves the issue. thanks!

### Reply 4:
here (<link> too, in the cgminer thread.

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11311,"Date: 2023-06
Topic: New cooling setup for my asic room.
### Original post:
Been redesigning the asic room. this room has no space for cooling it was a power utility closet about 8 by 20 feet

### Reply 1:
spacer.We have 15 ducts to 15 s19'swe will get 6 more ducts for six m30+m50notice we are lining up the duct pipes to that silver rackwe will attach the ducts to the rackthen use these fans to aid the air flow<link> will end up with 3 silver racks doing 7 vents each.we have a place for those 5000cfm fans to exhaust air. see plywood on left we will exhaust 10000 cfm at that point.inside the room we are exhausting 5000 + 14000 cfm = 19000 cfma total of 24000 cfm to exhaust.

### Reply 2:
spacerinside the mine is a very large heavy duty rack. it will eventually be 60 units of m30,m50,s19,L7 doing about 60 x 3200= 192kwattsyou can see current blue exhaust on left and very large 14000 cfm fan at high center the top two rows are fed from the black 8 inch tubes to this style duct.<link>

### Reply 3:
spacernote yellow tube. it is exhaust for a 3 ton ac from movinair.com the office pro 36note a temporary insulated barrier that keeps ac in cold isle. you can see ac pointed at the cold isle in back of photo.

### Reply 4:
spacer final shots5000 cfm blue fanand up top is the 14000 cfm fanyou can see the ac exhaust going into the fanyou can see the blue 5000 cfm fan on left.we will be able to do three 5000 cfm blue fansand one 14000 cfm big fangiving 29000 cfm air outwe will feed 21 tubes at 300-400 each which is 8000 cfm inwe will feed three red fans not viewable here which is 9000 cfmwe have a 3000 cfm fan be door. this is 20000 cfm in totalthe inside the room ac is 36000 btuwe will feed a second 36000 btu ac from the outside {not pictured} which has 900 cfm of airthis give us 21000 cfm in and whatever gets in open door.along with 29000 cfm out.should be fairly balanced when we are done.60 s19's are about 60 x 400 = 24000 cfm air. so we should be close with air matchingI will do more photos over the next few weeks.

### Reply 5:
Thats amazing set up you have got. I can see standing fan on the entrance side while blue 5000 cfm fan on the other side of the room. So logically you are pushing Cool air from one end and sucking the hot air out of the room with blue fan. But how about cooling the entire room with Air conditioner. Im just adding up this because the room is pretty closed one and can get cooled down pretty fast. Thats just traditional way, but Im sure you might have thought about it already and there are some issues with direct room cooling?

### Reply 6:
the gear puts out 500,000 btuwe do have 2 ac's each are 36000 btu total of 72000 btuwe would need to use a lot more power to push say 180,000 btu of ac3 of these is likely the most we can do<link> pull 6,600 watts each so 20kwattsours pull 2,500 so 2x = 5 kwattsI did more work yesterday but forgot to photo itI am going back in a few days I will photo more.

### Reply 7:
That's around 3x reduction in the power. Well, 60,000 BTU/h seems reasonable power to cool down the entire system I was thinking how about you place another blue fan at the entrance. Obviously it will get much noisy as it could but can push air constantly as compared to the conventional fan that has been installed at the entrance. Going further if you are anyways trying to experiment various methods of cooling then how about doing this:1. Install a blue fan with 60,000 BTU output. 2. You will need to build a skeleton frame which will cover the entire back of blue fan. 3. Look for the HoneyComb Pads OR also called as Winter Mattress in some regions. a. These are water compatible sheets, you can deep them in water or somehow circulate water stream through it. Once the blue fan sucks air, this time it will suck pre-cooled air. b. This can increase the efficiency of cooling to many folds and it will cost you no significant energy.

### Reply 8:
Very cool insights into your crypto mining operation! In what weather conditions do you live that require such extensive amounts of cooling? Also what I would be interested in, is if you ever thought about using the excess heat in the winter to heat some office/production space nearby, or is this not possible with your setup?

### Reply 9:
we heat the entire warehouse for free. The mining room is 8 by 20 power closet. Say 160 square feet.That 160 square feet has over 500,000 BTU of heat.The warehouse is about 40,000 square feet.It stays toasty in the winter spring and fall.

### Reply 10:
No dice on swamp cooler. Town has poor water with tons of sediment.Hard to use swamp cooler in a tight spot.Out other room has a hessaire swamp cooler it works well because we keep a distance with it so the sediment does not coat the gear with calcium deposits.Als we want to keep that open door closed. But will will use a 5000 cfm blue fan to pump air in to the room.look to right side of this photo we will pump in 500 cfm on corner

### Reply 11:
I was thinking about temp<rest of thread truncated>
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    ""hardware_name"": ""m30"",
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    ""hardware_name"": ""m50"",
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  },
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    ""hardware_name"": ""L7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5000 cfm fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""14000 cfm fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3 ton ac from movinair.com the office pro 36"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""blue fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""red fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""3000 cfm fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""36000 btu ac"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HoneyComb Pads"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Winter Mattress"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hessaire swamp cooler"",
    ""hardware_is_owned"": true
  }
]"
23980,"Date: 2022-07
Topic: Innosilicon t2t 26t
### Original post:
Hi guys, I have an Innosilicon t2t model and when I connect the miner to the power supply it doesn't work. But when there is only one board, it shows that it run normally, I want to know how to solve this problem? Please help.

### Reply 1:
What do you mean it doesn't work? Do you mean the miner is running but not mining or no hashrate?To troubleshoot your problem you must post the whole logs here and don't forget to put them inside the code tag or use pastebin.com and share it here.Also, read the common problems and solutions from Innosilicon support.

### Reply 2:
Do you have another power supply? You can try other power supply to see if it can run.

### Reply 3:
I gave a new PSU and the machine started running fine until now. This is great.

","[
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    ""hardware_name"": ""Innosilicon t2t model"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""another power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""new PSU"",
    ""hardware_is_owned"": true
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]"
3905,"Date: 2016-01
Topic: GROUP BUY for AVALON6 - $1100 - Closing Jan 12 at 6:00 PM EST
### Original post:
Kilo17- manyPhilipma1957 - 2 unitsXleejohnx- 1 unitPikachuy- 1 unitBigredbutton- 2 units

### Reply 1:
SoKilo17- manyPhilipma1957 - 2 unitsXleejohnx- 1 unitPikachuy- 1 unitBigredbutton- 2 unitsKNCFUN -1Valkir -1HerbPean -1And I would take my 2 and Valkir's and HerbPean 's total of 4 unit to my house.I ship two up to Montreal.@kilo17 this seems to be all of us.

### Reply 2:
I log back in to read the thread and it looks like I missed the bus? I'm confused. So, I'm not getting two units form this group buy?

### Reply 3:
yeah you seem to be the third one.bigredbutton--- no pmpikachuy ----- no pmkipper01 ------- no pmI figured you all dropped out

","[
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]"
16190,"Date: 2022-01
Topic: hire a engineer to build me cooling system like a  fridge/freezer
### Original post:
I am plan on getting a professional to design me cooling system for my 2 KD5'S has anyone design or made a cooling system like a fridge/freezer like system that works and remove's the condensation problem. Does anyone know what is the maximum temp ratio these run at or has anyone figured out how low they can put the temp without running into Condensation problems ? Does anyone know of any company that would give out design plans or make one for me ? For just 2 miners I want to see what is the maximum hash rate these KD5'S can perform at when overclocking them.1. Goldshell KD52. qty 2 3. Max 3 - 45C the machines vary from 65C - 80C with exhaust fan 99C without 4. Phase 1 240v 50hz i have 8.5 kw solar system. I do plan on getting more miners in the future.Though just need help with my first two so the chips don't break in the long run.or is immersion cooling the only way to go with cooling miners down? What is maximum temp you can reach with immersion cooling ? I have seen some vids the machines only drop from 80C - 70C then 40C I guess that is ideal but I want to do more to see what is the maximum it can do without breaking the machine of course.

### Reply 1:
Kd5 mines what coin?btc goodany other coin this belongs in altcoin section.Now pretend it mines btc.what is the watts?okay looked it up it uses 2250 watts so lets pretend you are asking about the s17 which uses same watts.two units use 4500 watts. and that is about 21000 btus of heat.If you are doing two units I would figure you need to feed 1100cfm in and 1100cfm out.do you want to feed it cold air you can from an ac like this. wait for link<link> > air ac > box with two miner > vent outsideso above is costly due to power user for the acit will not have condensation issues.it will cost power an ac will burn $$the refrigerator idea is worse

### Reply 2:
Condensation is not the problem. The problem is that the chips NEED to run fairly warm and yes, even what most would call hot. These days all miners have a pre-heat cycle for good reason -- being power devices the designers knew they will get HOT so the circuits have been designed to accommodate changes in bias that happen when electronics warms up. As a result, they don't run as fast when cold and some will even refuse to start.

### Reply 3:
Liquid cooling. I had a post about it that was deleted. Look up Mineral oil for cooler of electronic components.Side hack. It does not lead electricity very well. If people don't like your idea then keep on busting it. You put your Antminer in an aquarium for test. Mineral oil.Bet it's gonna be a mess. Use an outdated machine.Source:How To Make a Mineral Oil PC - Explained16. apr. 2018Youtube: <truncated> you income is pretty high on the KD5'S. At writing time. $162.30/day. Per machine. Manufacturer estimate.

### Reply 4:
Refridgerator idea is shit, go with air cooling or immersion cooling.

### Reply 5:
As has been pointed out countless times in other immersion cooling threads - and there are a LOT of them here if folks just take a little time to look -- mineral oil is a horrible fluid to plunk electronics in for prolonged time. It attacks PVC wiring and anything nylon or rubber by making them very hard and brittle. The sulfur content in it attacks copper as well. There's a reason that there are commercially available alternatives to it - silicon-based oils and other purpose-designed dielectric thermal transfer fluids do not attack metal, plastic, or electrical components.

### Reply 6:
5500 watts equals approx 18.767 BTU's. Typical 24,000 BTU window unit would work or mini split system ideally. But the cost of the split system is conserable

### Reply 7:
he is better off with a wall ac set up correctly much cheaper<link> then needs some venting out of the room.two of these.<link> into room >>>>>air flow>>>> two miners using ebay vents >>>air flow >>> window

### Reply 8:
I would consider liquid cooling.Not immersion, but heat-sinks screwed to aluminum plates to which there is aluminum tubing brazed on the opposite side.The cooling medium should be distilled water.With pumps moving water through the tubing attached to the heat-sinks you can use a small fan-cooled radiator adjacent to the PC. Or, provide a small refrigeration unit and a <truncated> re-circulation valve to control the temperature at the heat-sinks.This is how electronic equipment is cooled on navy ships, etc. where computers, radar, etc must be kept clean and dry in an equipment enclosure onboard ship.This would have the benefit of avoiding dust-laden air being blown across your computer's electronics.

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    ""hardware_name"": ""Goldshell KD5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""exhaust fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""solar system"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Mineral oil"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""window unit"",
    ""hardware_name"": ""mini split system"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wall ac"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heat-sinks"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""aluminum plates"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""aluminum tubing"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""distilled water"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pumps"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fan-cooled radiator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""refrigeration unit"",
    ""hardware_is_owned"": false
  }
]"
13736,"Date: 2022-01
Topic: Users removing dev fee from CGMiner clones
### Original post:
Recently users have been able to remove the dev fee from ""custom"" firmwares (that everyone knows are modified versions of cgminer).Some are even keeping the exact appearance and substituting in their own dev fee information instead.This second practice of changing the ""legitimate"" dev fee information with this actors details seems far more malicious to me than removing the fee entirely.To take it a step further users are even removing the fee and then reselling the firmware with the dev fee removed. At what point do these alterations of the firmware begin to cross lines? Or does the ""custom"" firmwares existence in the first place already cross any existing lines?Thoughts?

### Reply 1:
I think the lines are crossed a long time ago, since people don't have any manners when it comes to money making.eg. Bitmain renaming cgminer as BMMiner is the same as I might as well take a direct copy of it and just rebrand it HagssMiner.Custom fw providers and cgminer copies also do not share their source code like cgminer license requires.Canaan used to be very open about their cgminer branch,but I think even they don't have the latest source code in public github. So yes, it's all gone to shit.

### Reply 2:
I've admittedly never dug into the GPLv3 and I'm not a lawyer but maybe its not worth (financially) pursuing the various breaks that have actually occurred?Though a large company like Bitmain copying it seems more egregious.It's all gone to shit is a good way to describe it. I remember a long time ago seeing conversations just about bfgminer, didnt think it would spiral into this.

### Reply 3:
Yeah ... everybody is violating the cgminer license these days. All the ASIC manufacturers and a bunch of aftermarket firmware. But, apparently, no one is willing to sue, so that pretty much makes the license useless. It seems the worst that is going to happen if you blatantly violate the license is to get called out about it on the forum. Must not be enough money to be made to pay for the lawyers...Brains is the only aftermarket firmware to not violate the license since they re-wrote the code from scratch. And their basic firmware is open source, so I'm not sure why the other aftermarket guys don't just branch the basic brains firmware and then add their own closed source proprietary tuning separately, just like brains does with the brains+.

### Reply 4:
I'm sure Kano can tell you how ""legitimate"" is the code injecting that causes memory leaks and crashes, that also happens to corrupt eeproms from unsuspecting victims.In short they are illegal for not sharing back whatever modifications they did. But how is a British supposed to sue some Russian? They just don't care. Thieves stealing thieves, or should we better say pirates plundering fellow pirates? Yarr!Because that takes actual work Also, they can't close what is open, that would be infringing Braiins copyright... And the rest of the OS is OpenWrt.

### Reply 5:
We don't write to eeprom you guys did in your beta remember... You guys should try not to slander. Oh wait Tell me how you guys trip the efuse on a 17 series... I legit spilled my coffee when I saw your firmware do that lol.Anyways braiins has a history of copy us. First they copy, Autotune algo, then they copy temp switching, then our boot loader... Must we go on To be honest I only ever sign on here to mess with Kano that little racist cuck but anyways. I will check this thread in 2022 or somethingMuch Loveps. Stop with the attacks it's getting old you don't see us trying to scare people now do you

### Reply 6:
You are full of lies, as always. But people know you and your ""work"" ""ethics"" anyway, so you are just a waste of time.Keep ""vAnishing"" machines. Have you learned coding already? Of course not, all you do is ""whip"" others (your words, not mine).And yes, you started it, so stop the FUD and lies. Maybe just start getting to work and actually fulfill your signed contracts for a change...As for writing eeproms... That's done by bmminer (modded cgminer), and we never touched that, you did. Go fight with your fellow compatriots and let the people who actually work alone. How many S19 have you turned worse than a couple of S17+ today? Keep dreaming, 220TH is it? why not take it to 250? eFuses are tripped by malware, which typically only occurs with factory or modded firmware, simply because your compatriot malware developers have not bothered with a different OS, but that's not an excuse to not set a proper password. You are definitely confused (again), so take your complaints to them.Of course we no longer see you scaring people after you got muted in the group. An yet you keep your minions spreading the fud elsewhere. Put them to work instead of wasting time, its amazing how you can take<rest of post truncated>

### Reply 7:
Not voiding any contract? Talking about public knowledge here.S19 we did do 250 actually well pretty clo<rest of thread truncated>
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  {
    ""hardware_name"": ""S19"",
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    ""hardware_name"": ""S17+"",
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23130,"Date: 2019-11
Topic: Innosillicon T3+57T - PowerSupply
### Original post:
Context:I try to replace the noisy fan on power supply, the fan using 4 wires: GND, 12v+, 5v PWM, RPM Signal.I replace it with a Noctua 12v with 5v PWM, but it did not work.. And I put back the original fan, but the miner still do a error about psu Problem:Now I got error code 35 and power error code is 2048Code: ""err"": { ""err_code"": ""35"", ""err_msg"": ""0 2 1"" }, ""power_vendor"": ""GP"", ""power_version"": ""1.70"", ""power_errorcode"": ""2048"",The error no 35/2048 refer to a stuck fan of powersupply.<link> one have already experiment with T3+I also try to connect to the what is look like a serial port on microcontroller of PSU... but no signal<link> also got log from the main api <truncated> 11 02:06:35 InnoMiner cgminer[988]: all chains: set vid 0Nov 11 02:06:35 InnoMiner cgminer[988]: chain0: failed to set vid 0(14.60V), 0.03VNov 11 02:06:35 InnoMiner cgminer[988]: chain0: sleep(0)Nov 11 02:06:35 InnoMiner cgminer[988]: chain2: sleep(0)Nov 11 02:06:35 InnoMiner cgminer[988]: chain2: power-on mode 1Nov 11 02:06:35 InnoMiner cgminer[988]: chain1: sleep(0)Nov 11 02:06:35 InnoMiner cgminer[988]: chain0: power-on mode 1Nov 11 02:06:35 InnoMiner cgminer[988]: chain1: power-on mode 1Nov 11 02:06:4<rest of post truncated>

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    ""hardware_is_owned"": true
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    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Noctua 12v"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""microcontroller of PSU"",
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23374,"Date: 2020-12
Topic: How to test if S17+ APW9+  PSU is working correctly?
### Original post:
[UPDATE]i checked the powersupply and it is giving a steady 21v current. I swiched the hashboards and now instead of hashboard 3 not working, hashboard 2 is not working.When opening the miner. 1 of the heatsinks fell of. If i have to guess one of the chips is dead.What is the best thing i can do now?is it possible to repair a dead chip ?

### Reply 1:
I'm sure you will need some technical knowledge to fix this issue and you will need some repair tool to replace a dead chip.Since you mention that the heatsinks fell (Maybe the chip is not dead yet)why not try to buy adhesive or Thermo Glue to reattach the heatsink back to the top of the chip. The miner is automatically turned the hashboard off if it detects some overheating parts it's just protecting the hashboard from burning. So reattach heatsinks might solve your issue.If not, then you will need to find someone who knows to repair a hashboard or If you still want to repair it with your self you can check the guide from zeusBTC from this link below.- <link>

### Reply 2:
Thanks for your reply.Not every chip has their own temp sensor so i guess the miner will not turn off automatically when a chip overheats. But the heatsink fell of while cleaning, maybe there was not enough surface contact between the heatsink and the chip.

### Reply 3:
The best explanation I can come up with is that the fallen heatsink was shorting something and stopping the miner from mining, once that was taken care of the other two good hash boards worked fine.Mine with 2 hash boards.It's unlikely that the chip is dead, your problem is just the heatsink, all you need to do is ""glue it back on"", check this video <link> keep in mind that these guys make it look super easy when it really is not, at least not for me.

### Reply 4:
Hey thanks for your reply. I dont think the heatsink shorted something. When taking out the hashboards everything was fine. one of the hashboards was layed down on the table. After i picked it up a heatsink fell of on the place where it was resting on. So the heatsink was still connected to the chip but very weakly. So i think maybe it couldnt distribute the heat of the chipp well enough because the conection beteen heatsink and chip was bad.I did glue it back on but nothing changed. I am mining now with 2 hashboards, its best what i can do.So why you think it is unlikely that the chip is dead? all i read on internet is bad chips on s17 hashboards.

### Reply 5:
Many people can't differentiate between the chip itself and the heatsink, it must be a language-related issue rather than a technical one, most gears I have seen have bad heatsinks, it's very unlikely that the chip will heat and burn because if the heatsink falls or is loose, the hash board will shut down right away, long before it heats up to the extend that will make it burn.The problem with troubleshooting heatsinks is that in many cases you can't see the bad once with your naked eye, the heatsink will seem like it's perfectly glued when it's slightly loose and that alone is enough to shut-down the board, which is why companies like Zeusbtc manage to sell fixture devices for a premium.Anyway, your problem is very common, it has been discussed numerous times in this thread, things from placing a heavyweight on the hash boards all the way to freezing them in the freezer have been tested and talked about, you should have a look.

### Reply 6:
Thanks, i should have a look on how to troubleshoot if the heatsink is the problem.

","[
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13683,"Date: 2021-04
Topic: HELP: Socket connect failed: connection refused
### Original post:
<link> have an Antminer T17. It saus socket connect failed: connection refused. What does this mean, and how do I resolve the issue? I have tried rebooting it already. Miner status: <link>

### Reply 1:
hi, i thinks your pool config is bad ... what pool you use ?

### Reply 2:
You might need to reset your miner or flash another firmware, but before doing so, please test this pool as your main <truncated>

### Reply 3:
Instead of risking finding a block and sending over $300k to someone who already has around $50mil or moreReplace that 'PKN...' address with your own bitcoin address.

### Reply 4:
Kernal log below:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203752K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss, 256<rest of post truncated>

","[
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4079,"Date: 2012-05
Topic: FPGA -- DIY @ Low Cost
### Original post:
Using retail or bulk-purchased components: Has anyone here developed any actual low cost do-it-yourself FPGA boards that have competitive or better-than competitive hash/$ rates?If-so: Is that person willing to share or sell the design plan?I've seen a few threads attempt to tackle this topic, but I have yet to see anything actually come from them. It seems the thread authors drop out or decide to develop the idea for their own use after some progress.If not: Is anyone here willing to collaborate on developing such a board? And not just an FPGA board that will hash, it MUST be competitive in price...if this is even possible. It seems, so far, the best hash/$ rate is BFL's products. But if a board could be developed to be at least as good as the next best hash/$ rates, it might be worth it. Especially considering the slow product shipping time of Butterfly Labs.

### Reply 1:
I'm really interested in helping out with something like this. I would be doing as much learning as contributing, but this would be really fun.I haven't seen anything successful from those threads either; let's be the first!

### Reply 2:
I'm glad to see some initial interest in this. Though, it isn't much of a surprise having seen the other DIY FPGA threads.I'd personally like to bypass all the fun of designing one, and use someone else's already made DIY plans. My expertise is as an electronics technician, not an engineer. In the meantime, I might go with Butterfly Labs products.....There are good ideas already posted and well commented, but nothing finalized. I personally like the thread started by RPH here: <link> o/p reads ""Ultra-Low-Cost DIY FPGA Miner - 175MH/s @ $1/MH"". i.e. 1MH/$If his design path actually would yield 1MH/$, then that DIY approach seems quite worthwhile...b/c BFL Singles is the best at about 1.38MHash/$. The next best two found here (<link> are 0.82-0.5 MH/$ made by ZTEX (but the best rate there requires a bulk purchase), and the very comparable 'X6500 Rev 3' at .71MH/$.So, 1MH/$ seems very nice for DIY...even considering some of the new stuff that seems ready to come out. Furthermore, the MHash/$ might possibly be improved more with some creative thought.Any thoughts?Maybe go to this thread for some other insights to <truncated> Spartan6-LX150 board""<link> see what kind of responses we get<rest of post truncated>

### Reply 3:
Someone really needs to release a board design and sell plain pcbs. As soon as you can just buy a board and your own components and then solder it all together, this becomes far more feasible for the DIY hobbyist. Especially with something like rph's approach where you could buy the fpga already soldered on a daughter board.

### Reply 4:
Yep,all we need is the board design & a parts list Something simple,maybe around 200+ mh/s.I have a guy that can assemble boards in his home I would be willing to kick some BTC towards this IF it'll work.

### Reply 5:
That sounds good too. Though, I'm even curious about the potential for a DIY PCB. What necessary PCB complexity is there to accommodate to an FPGA chip. One thread I read seemed to indicate a 4 layer PCB would be a minimum. If-so, then yeah, I don't see that happening easily in a DIY venue. Which would mean having the PCB made professionally. But that may be the one thing that needs to be bought in bulk. And if it is as simple as RPH's boards seem, then it shouldn't be that costly at all.BTW: I am pretty sure RPH soldered his own FPGA to a BGA board. That was part of his excitement in using a skillet or hot-plate to do so. It appears this is the BGA board he used:<link> a professional outside PCB source seems to have been his approach as well. There may not be any practical alternative for DIY.||bit.out

### Reply 6:
And it must be low cost, i.e. it must be competitive with two of the top three FPGA boards in MHash/$.Otherwise, it's just fiscal sense to just do the retail option. BFL, ZTEX, et. al.I think DIY would have the advantage, since you automatically cut out the profit aspect. However, there are some disadvantages of DIY -- e.g. individuals have a higher hurdle to receive any bulk discounts (which might be able to be met by pooling DIY'ers purchases), or any special or costly equipment needs.

### Reply 7:
Reflow soldering without the right components is very easy to mess up and get wrong. I don't think there would be many users that would be successful with a kit. I don't think it would be possible to create a board that isn't reflow soldered.

### Reply 8:
Thanks for your thoughts.For DIY, what would you suggest to accommodate this problem? A premounted FPGA chip on a daughter board? Akin to one RPH seemed to use here: <link> RPH seemed to pull off something like that at his home: <link>

### Reply 9:
On the usual boards, many other components are SMT as well, and I have no idea whether they could be redesigned with through-hole parts. My guess is that they probably <rest of thread truncated>
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    ""hardware_name"": ""Butterfly Labs products"",
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23032,"Date: 2019-08
Topic: assign port for remote access via 4g router
### Original post:
Hi All,i have a few of miners at a remote location (Avalon's 741) they use the OpenWrt OS. I have them connected to a 4G router with a sim card in. They work absolutely fine. However what i'd like to do it setup a VPN so i can access each one separately from my laptop wherever i may be.Ive set the the router up for DuckDNS and from looking at the router control panel it seems quite easy to forward a port to a particular host.The thing i'm stuck on is how to assign a port number to the miner in the OpenWrt. Can anyone help me with this please?zac

### Reply 1:
DO NOT DO THIS.DO NOT GIVE ACCESS TO YOUR MINERS TO THE OUTSIDE WORLD.Put a small PC / RPi behind the same router and connect to that.If you cant use a VPN to get in securely at least use something with 2FA to connect to the machine behind the router.-Dave

### Reply 2:
I have got a spare RPi so thats quite a good idea. just plug that into the router and then connect all the miners to that. but... excuse my ignorance but how is that safer please?zac

### Reply 3:
There is a difference between opening the miner to the outside and you connecting into your network.With port forwarding anyone that hits your ip and that port gets to the miner and there are plenty of crawlers out there attempting to, it's happened with a lot of different hardware that isn't behind a firewall. It's far safer to keep the miner behind the firewall and connect into the network, and if you do set up a pi do not forward it out from your router/firewall, use a vpn program to connect in.If your network is on ip 184.72.19.29 and you forward your miner on port 9848 anyone connecting to 184.72.19.29:9848 can get to your miner. I have a local webserver on a different external ip, as soon as it was hooked up and opened it started logging login attempts.

### Reply 4:
is VNC a safe option? so if i installed VNC on the pi then accessed the miners like that?zac

### Reply 5:
So long as you are using a very strong password it's safer. Not 100% safe but much better then putting the front end of the miner out to the public.I don't know how secure you can make VNC with 2FA or other security but it's much better then forwarding the miner web page.On a side note, with 4G you are loosing some profit mining, there is more latency in sending / receiving data then with cable / fiber / dsl so you will get some more rejected shares.I do not have any hard and fast data to the amount but I know it is there.-Dave

### Reply 6:
thanks for the reply. yes unfortunately 4g was the only option for this particular location. my other locations are fibre.

### Reply 7:
I'd say to still use a VPN like openvpn, I'm not 100% sure but this seems to be one that works with a pi. @ zac123 I would check openvpn's website to see if they have any links to do this as well (do your due diligence)<link> for 4g it's not great but you can only use what's available. For only 1 machine/connection it should be just fine, the avalons don't do much in the way of connections like the s9's do they do a dns query to resolve the pool then stay there for a while, bandwidth is limited on them on 24 851's on 1 pi they top off at around 15kbs but average 10-12.If you have a bunch of miners a simple dns forwarder / cache server would work to limit the outbound requests, it won't do anything for the work the miners need to process.

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21203,"Date: 2016-12
Topic: throttling issue with s9 farm
### Original post:
So I was running 5 s9s for a while with no issue till I decided to get 5 more. When they first were shipped and setup 4 out 5 of the new ones started having low hash rate issues almost as if one or two hashboards wouldn't work but all the boards are lit up. After months of constant diagnostics I've noticed that the super low hash rate issues kept on moving from one miner to another and after discovering the issue i'm being throttled. If I have more than 6 miners hooked up then the remaining after 6 miners will have very very low hash rates most would have only one board working even though all boards light up. Since I am with at&t uverse and discovered that there was reported bitcoin mining issues with them in the past I decided to install ddwrt on my asus ac3100 which did nothing. After that (what I thought to be an obvious fix) I added an openvpn to the router and that didn't fix it. I'm so far all out of options here. I can't use the latest firmware because anything from about 2 months to now I will get connection refused on every miner I install the new firmware with. I am using an asus RT-n12 for my wireless network. I did try using two different connections and still same iss<rest of post truncated>

### Reply 1:
You mention wireless network and a wifi router. You arent trying to run these on wifi are you?

### Reply 2:
Yes I have an asus RT-n12 as a repeater connected my main asus ac3100 router. The asus RT-n12 is using 9dbi antennas instead of stock.

### Reply 3:
Using wireless ""may"" not be your problem, but I would definitely use wired Ethernet if it was available. Too many variables trying to mine over a wireless connection.Just my .02.Best of luck in solving your problem! EDIT: Just as a test, if you are able, hook all your machines via wire and see what happens.

### Reply 4:
I will have to get a 500ft cord to my shed.

### Reply 5:
Oh, I understand. That is a dilemma. Sorry I can't provide any advice. Since I think the max length of cat 5 is 100 meters and cat6 is about 60 meters.Best of luck!!

### Reply 6:
Well I managed to get 200ft to the shed with 5e. Connected to the switch and still same issue. I messed with this for 3 days straight. I kept messing with firewall settings all day and even made sure that the modem firewall wasn't protecting anything. Turned my asus repeater back into a router and that still didn't help. I used both my ethernet port of the modem and ddwrt router.

### Reply 7:
It may be the wireless with that distance,So either get a extender and more cord.Or I've heard of setting up a PC to act as a pool for your miner's which is then tied to a pool.Never tried it. But then you are effectively only pushing one signal to the house.Other option may be a bigger wireless repeater.But wired is the way to go! Likely to many packets of similar info for it to handle..

### Reply 8:
I don't think you want to run that many miners on wifi connections. wifi is really not the solution for any sizable deployment.You mentioned your restrictions with distance, so how about this:1. Setup WIFI router A at your internet access point2. Setup WIFI router B to be the common access point for all your miners in your mining area3. Setup router B to be a hotspot or repeater of A4. If distance between A and B is an issue, throw a few boosters / repeaters in between to cover your dead spots. They are cheap from BestBuy, etc.This reduces the number of connections to your WIFI broadcasting signals and technically should allow your WIFI router to better prioritize its traffic.

### Reply 9:
Please learn to read new posts

### Reply 10:
Please learn to not ask for help then treat those trying to help like an asshole?As I HAD SAID the other option is a proxy setup, so you only have one outward pointing stratum proxy server.Or find a wireless provider and get better bandwidth, OR find a hosting company and mail your shit out.

### Reply 11:
You're the only one who's being an over sensitive asshole that can't read. I even stated I used a vpn. You're not even being helpful, you're just being what is known as a troll.

### Reply 12:
So you have a centralized PC in your shed acting as a mining pool which is then tied to another major pool, effectively making your shed one large mining rig as it appears to the internet?Or are you funneling all your network usage through a VPN somewhere else? A proxy setup and a VPN are not the same thing?Since I'm the only one apparently being an over sensitive asshole, I also seem to be the only one any longer commenting to your thread, So maybe telling people to ""Please learn to read new posts"" Is not the best way to answer someone who may or may not have missed a new post, or misunderstood your information given?But please continue to tell me I'm a troll, And than answer the damned question of how your miners are hooked up?

### Reply 13:
Cuffs - you are a douche. That is all.

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    ""hardware_name"": ""asus RT-n12"",
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    ""hardware_name"": ""WIFI router B"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""boosters / repeaters"",
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21033,"Date: 2016-05
Topic: Antminer S1 Miner Status Tab is Now Blank - Contains no value yet
### Original post:
Could anyone here help?

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23651,"Date: 2021-08
Topic: detect t17e hashboards break chips
### Original post:
hellothere is any method i able detect burned or break chip at t17e hashboards?as you know t17e hashboards break each month, and as i have lot of this model, i want detect chip and replace it myself for decrease costif anyone can help, please let me knowwithout testers possible? or i should have just testers?i can put hashboards on device and get voltage anything for detect break chip?Thanks.

### Reply 1:
Without a tester, multimeter, or test fixture it's impossible to determine which ASIC is broken.Why not read the guides from zeusBTC they have some diagrams where you can find the test point to test the voltage. If you didn't know this yet you can go and check the link below.- <link> down and you will find all guides on repairing hashboards.

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21056,"Date: 2016-06
Topic: USB ASIC miners & CGminer. Anti-virus removed EVERYTHING :(
### Original post:
Hi guys.A couple of years ago, i setup a pair of ASIC USB miners on a usb hub. The software running them was CGminer - I had a string in the shortcut that set all the params (login, usb id etc etc)Well, friend said i should try Avast anti-virus....... HOLY COW, the damn thing HATES BTC!!! It removed all my shortcuts, software, backups... EVERYTHING that had bitcoin core i guess.well, trying to setup the 2 miners now, I just cannot for the life of me get the string right (or even working)they are on COM14 & COM26, I'm trying to use slush's poolThe CGminer version is 4.9.1, but I'm SURE i was using 3.1 before? Just cant find it to download it.can anyone help with the string & possibly cgminer version?Thanks

### Reply 1:
Maybe , but if you are running any anti virus software it is a pain in the ass.translation use a rasp pi or an old laptop with a powered usb hub for mining only.Lastly those asic miners are now full out of date. they get .333 gh for 5 watts... while newer sticks get 10 gh for 5 watts. that is correct about 30x the efficiency.

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11133,"Date: 2022-04
Topic: MicroBT announced the new M50 series of WhatsMiner
### Original post:
The new M50 series of MicroBT's WhatsMiner has been announced.Here's the announcement video:Here are the stats of these miners:WhatsMiner M53: 226TH/s, 29J/T, 6554WWhatsMiner M50S: 126TH/s, 26J/T, 3276WWhatsMiner M50: 114TH/s, 29J/T, 3306WHere's a closer look at the WhatsMiner M50S (M50 looks similar):And here's a closer look at the WhatsMiner M53, the fastest one:They look quite interesting for the industrial miner, but probably not for home use at 6.5kW+ of powerIn terms of price, the M50S is sold for about $11k, and the M50 for about $9k (both sold out at the moment).Source: <link>

### Reply 1:
It's amazing how compact the M53 is and how much it can do. That will increase the hashrate enormously again. I am very interested to see where this will go.does the price follow the hashrate or the hashrate follow the price?I hope the price of the hashrate, so I'm looking forward to the new miners, even if no private person can buy them to run mining himself at home.Best regardsWilli

### Reply 2:
BITMAIN releases the best models so far#BITMAIN has officially launched the ANTMINER S19 XP Hyd., an #ANTMINER hydro cooling miner with a hashrate of 255T, 5304W power consumption, and power efficiency of 20.8J/T. <link>

### Reply 3:
Hmm, they went for a different design for the M53, that's interesting.I wonder how flat that thing is in reality and how big it is, would be nice if it would fit old server racks without having to spend hundreds of thousands on the HK3 if you only have 5-10 machines. No, it doesn't work like that.Hash rate will always follow with a delay in the price when it goes up, the fact that hashrate has grown so much despite no real price movements it's mainly because we have more efficient chips and there is a lot of time between mining becoming profitable and enough gear being manufactured and delivered to balance things out. The delay is of course erased when the price drops like a bomb and miners realize they are operating at a loss and turning gear off.What matters for miners is the daily revenue, the value of those on average 900 daily mined BTC plus fees that's what dictates everything.

### Reply 4:
Damn That water cooler unit can do as much as 10kwatts!<link> want to promote it for greenhouse heat etc.

### Reply 5:
Whatsminer M30S++ 112 TH/s 31 J/T 3268 WWhatsMiner M50 114 TH/s 29 J/T 3306 W<link> M30S++ looks better than the newer model in my opinion.

### Reply 6:
You know they try to squeeze a lot out of the psu's both of them would be better off at 2900 watts not 3268 or 3306 watts.All the newer gear from bitmain cannon and microbe have Oem psu's that you have to use or the gear won't work and all the psu's push to the limit. PSu failure is common and getting replacement psu's is difficult.Also a lot of the stock firmware does not allow for simple under clocking.Nothing new but you would think that one of these companies would push a firmware that allows for 5 speeds or better. Much like braiins or vnish do.As for the m50 vs the m30s++ it is bottom of the line new compared to top of the line old.So not that fair to compare the m30s++ to the m50the m50s is 126 at 26 watts. and that is pretty good compared to the m30s++ 112 and 31 wattsI have had most of my microbit gear fail not a real fan of them.But the water block solution they have is a rack holding 15 servers and a cooling radiator. the unit will do 90 to 150 kwattsthe water block solution from bitmain is a container holding 200 units it will do 1 megawattI could swing the microbt at 150 kwatts maybe 2 of them but the bitmain need more power than I have 1 megawatt is more than the 800k<rest of post truncated>

### Reply 7:
I'm not a fan of ASICs because of the high energy consumption and noise, but then it turns out to be better to buy ASICs with separate power supplies, for quick replacement in case of a breakdown. I heard miners write very good reviews about Whatsminer M20 series.

### Reply 8:
they were decent but did not last for me.

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23454,"Date: 2021-02
Topic: Problems with T17s from Alibaba
### Original post:
Code:2021-02-12 15:32:36 <truncated> Chain[0]: find 30 asic, times 02021-02-12 15:32:46 <truncated> Chain[1]: find 30 asic, times 02021-02-12 15:32:56 <truncated> Chain[2]: find 11 asic, times 02021-02-12 15:33:06 <truncated> Chain[2]: find 11 asic, times 12021-02-12 15:33:16 <truncated> Chain[2]: find 11 asic, times 22021-02-12 15:33:16 <truncated> Chain 2 only find 11 asic, will power off hash board 2Yeah, chain 2 has issues, bad connection on the board or bad ASIC chip.Also, for nicehash you should add #xnsub to the end of the pool URL.And yeah, 2 fans not running is eventually going to cause a problem. Might just be dead fans, so you could try just replacing them.<link>

### Reply 1:
Unfortunately, the way these hashboards are built makes it impossible to run unless all chips are working, so there is no firmware that will run a board that doesn't have all chips working. The only way to get those boards working at any capacity is to have them repaired, see the ""Where to fix your ASIC miners"" topic.For machine 3, swap the PSU with one of the working miners to see if the PSU is the only problem. No sense spending $$$ on a PSU if all the hashboards are dead.

### Reply 2:
If you did replace the 2 fans on the PSU and saw no difference, i.e you confirmed it's a dead PSU, then your only option would be getting a replacement, unfortunately, bitmain is out of stock so you will need to search for it, where are you located?

### Reply 3:
Hi, I've recently bought 3 T17s from Alibaba, and the 3 are not working 100% success rate right?I want to try and fix them locally before shipping them to another continent, here are the errors the present:1st: <link> <link> <link> the 1st machine 2 of the 3 psu fans I've noticed aren't working.Any help would be appreciated.

### Reply 4:
1st image <truncated> 08:42:25 <truncated> Fan check passed.2021-02-12 08:42:26 <truncated> chain[0] PIC jump to app2021-02-12 08:42:30 <truncated> Check chain[0] PIC fw <truncated> 08:42:31 <truncated> chain[1] PIC jump to app2021-02-12 08:42:35 <truncated> Check chain[1] PIC fw <truncated> 08:42:37 <truncated> chain[2] PIC jump to app2021-02-12 08:42:40 <truncated> Check chain[2] PIC fw <truncated> 08:42:40 <truncated> create thread2021-02-12 08:42:40 <truncated> power init ...2021-02-12 08:42:40 <truncated> Enter 30s sleep to make sure power release finish.2021-02-12 08:42:40 <truncated> init gpio907at this point did it die or do more.second image is it the second unit?it <truncated> 09:06:24 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 12021-02-12 09:06:27 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 02021-02-12 09:06:27 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 12021-02-12 09:06:29 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 12021-02-12 09:06:32 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 184, reg = 0that is likely a bad<rest of post truncated>

### Reply 5:
If that 1st log does just stop there it could indicate a PSU problem as well. Does the miner just lock up at that point?I'd try pulling the ribbon cable to chain 0 in #2 first. Then I'd try taking the PSU from #1 and try it in #3. If it starts to die in the same place as #1 did, then you've got another bad PSU. If the PSUs from #1 and #3 look bad, you could try the PSU from #2 in #3 and #1 to see if either of them has 3 working boards.

### Reply 6:
About the first machine, I've changed the mining pool since it seems T17s don't like Nicehash<link> the hashing rate is much lower than expected, and only 2 boards show? pic:<link> this 1st machine has 2 of the psu fans not working. could this be related? or just a problem that is lurking?

### Reply 7:
I think he also needs to use the asicboost stratum <truncated> the new gears come with asicboost enabled by default and for some weird reason, some of them won't work on the normal Sha256.OP, what is the voltage at your farm/house?

### Reply 8:
240v.Yes about the nicehash I had to add that adress to the t17s, that's how i got 2 to run, one with the 3 chains and the other with only 2.

### Reply 9:
2 dead fans usually mean a dead PSU and not just bad fans that need replacement, you can double check by using the 3rd working fan in one of the bad fan's slots, if it works, then it's a matter of fan replacement, if it does not, then it's a bad PSU, which is more likely than not.

### Reply 10:
After opening up the machines and changing some boards here and there I managed to get machine 2 to work with 3 boards.Machine 1 (with 2 psu fans not working) had 2 chains working but now only 1 chain working:<link> 3 nothing new, not enough voltage<link> like a bad psu on machine 3? What are my options? a new psu?what about the bad chains, is there a firmware that I can use to make it use the ones that are available? for example a<rest of thread truncated>
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23600,"Date: 2021-06
Topic: Avalon 921 Socket Connect Fail => Connection refused
### Original post:
Hi, I am new to this mining thing, I hope you can help me with the following problem please:[Firmware Version] => Avalon Firmware for avalon9 - 20190301 luci: 815f8ca cgminer: a60adfc cgminer-packages: 1714e12Socket connect failed => Connection refusedThings that I think it might affect:1) I have the miner connected to a 110V supply with 10Amps and around 1200W to 1600W (I'm not quite sure). It is a bitmain APW7 120V/240V 1800W supply.2) Problems with the firmware, although I already tried to reinstall the firmware more than 10 times on a rpi 3, it was getting the default ip(192.168.0.100) without internet connection, could it be a problem of assigning a static IP? I tried to put it in DHCP but I could not find the IP to enter the page.thanks for your help.

### Reply 1:
The A921 requires a PSU rated for at least 1,800w and 2kw is preferred. No Bitmain PSU will deliver that when fed only 110VAC, the few that even run on 110v top out at around 1,200w. To provide their full power rating the PSU's require being fed 208-240VAC.

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16543,"Date: 2023-06
Topic: Bijan Burnard Sells Shares in Worlds Largest BTC Mining Company Marathon Digital
### Original post:
Introduction:In a surprising turn of events, renowned blockchain expert Bijan Burnard has recently made headlines by announcing the sale of his shares in Marathon Digital Holdings, the world's largest Bitcoin mining company. This move has sparked widespread speculation and raised questions about the future of both Burnard and the cryptocurrency industry as a whole. As a prominent figure in the blockchain space, Burnard's decision is sure to have far-reaching implications. In this article, we delve into the reasons behind his unexpected move and explore the potential impact on Marathon Digital and the wider crypto community.Bijan Burnard: A Blockchain PioneerBefore delving into the details of Burnard's recent decision, it is essential to understand his significance within the blockchain industry. Burnard has long been regarded as a visionary in the field, having played a pivotal role in the early development and adoption of blockchain technology. His contributions have ranged from groundbreaking research to advising prominent blockchain projects and startups. Burnard's expertise and foresight have earned him a reputation as one of the most influential figures in the space.The Marath<rest of post truncated>

### Reply 1:
Lets see.Stock price unchanged (actually up a bit): <link> on their investor relations page: <link> SEC filings: <link> someone who nobody cares about who has no proof that they even owned or sold a share of stock wants us to care so much about their tiny ego that they want people to think what they did mattered to anyone else.Nobody here cares about Bijan Burnard or Lattice Labs -Dave

### Reply 2:
Dave, Im sure this post was intended to be internal Lattice Labs company news that they are sharing, which is super interesting internally. I know Lattice Labs is a blockchain development and education company, so Im sure they just like to share cool things they are doing. He would be selling his shares for his own internal reasons, nothing to do with any market forecast.Bijan Burnards approach is very interesting, It takes a keen business acumen to make timely and strategic decisions in the investment world. Especially when focussed to invest in their own private ventures.This move demonstrates his confidence in his investment strategy and his willingness to adapt to market dynamics. I met Bijan Burnard at Web3 Berlin, and he is super intelligent guy and very nice, what I remember is that he has a whole different out look towards crypto.Such astute decision-making deserves recognition and serves as an inspiration for other investors.

",[]
24033,"Date: 2022-10
Topic: Antminer Shows 15ºC of temparature on one Hashing Board..., how can I fix it?
### Original post:
Please edit that to use the code tag #...It takes that text wall and makes it into a much more readable scroll box. That out of the way, the important bit you left out is: Is the miner hashing correctly? If it does then probably just a bad temp sensor and reported temperature does not matter... If you are at 1/3 lower hash rate the the cold board is not hashing.

### Reply 1:
Hello, hope everyone is doing well. Let me explain what happened; 1 hour ago my antminer s9 was mining fine but suddenly, started make odd sounds, so I quickly check the status and found out that the temp of one of the hashing boards was ""143C"" while the other two were 79 and 84C. (Heres the 1rst <truncated> max freq = <truncated> totalRate = 13732, fixed_totalRate = <truncated> set <truncated> Chain[J6] PIC temp offset: <truncated> chain[6] temp chip I2C <truncated> Chain[J6] chip[244] use PIC middle temp offset=-4 <truncated> New offset Chain[6] chip[244] local:39 remote:41 offset:29 <truncated> Chain[J6] chip[244] get middle temp offset=29 <truncated> Chain[J7] PIC temp offset: <truncated> chain[7] temp chip I2C <truncated> chain[7] has no middle temp, use special fix <truncated> Chain[J7] chip[244] use PIC middle temp offset=0 <truncated> New offset Chain[7] chip[244] local:38 remote:36 offset:33 <truncated> Chain[J7] chip[244] get middle temp offset=33 <truncated> Chain[J8] PIC temp offset: <truncated> chain[8] temp chip I2C <truncated> chain[8] has no middle temp, use special fix <truncated> Chain[J8] chip[244] use PIC middle temp offset=0 <truncated> New offset Chain[8] chip<rest of post truncated>

### Reply 2:
NotFuzzyWarm, yeah, the s9 is mining at a 2/3 rate (between 9-10 Th). What can I do in that case (one hashboard not working)?

","[
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    ""hardware_name"": ""hashing board"",
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]"
11081,"Date: 2022-01
Topic: CANAAN AVALON MINER 1166PRO(81TH)-Questions regarding MINER LOG & MAX CHIP TEMP.
### Original post:
Good dayI hope everybody is wellThe temperature in the miner log is calculated at which frequency? What is the maximum temperature for the chips?<link> - TEMPERATURE RECORDED IN MINERS LOG<link> - CURRENT TEMPERATUREThank you for your time, have a good week

### Reply 1:
Sorry, I did not fully understand your original questions.I don't know the sample rate for temperature logging.The max. chip temperature should be 85 C.You can find it in the manual which is downloadable here: <link>

### Reply 2:
From the A10xx on up the log refreshes every 5 seconds (which btw makes copying it a PITA) so I would assume everything that is being monitored - including temps - are updated at the same time.

### Reply 3:
Thank you, would you be so kind to tell me where I can find information on how to read the log?

### Reply 4:
Actually, it's already on Canaan support under the manual tab with the name ""Log description""You can go to this link <link> and the manual tab look for Log Description and download it I also suggest downloading the troubleshooting guide to help you on how to read the logs.

","[
  {
    ""hardware_name"": ""CANAAN AVALON MINER 1166PRO(81TH)"",
    ""hardware_is_owned"": false
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]"
11801,"Date: 2012-02
Topic: CGMINER GPU bitforce overclock monitor fanspeed RPC in C linux/windows/osx 2.2.5
### Original post:
Dang thing keeps crashing, and I've lost my reply twice.Okay...*deep breath*...one more time...I've rebooted, reinstalled cgminer (2.2.5) directly to c:Lauched cgminer with full argument string: It ramps up (can see activity in Precision), then crashes my GPU driver.Here's the output:Code:cgminer version 2.2.5 - Started: [2012-02-12 <truncated> (avg):0.0 Mh/s | Q:12 A:0 R:1 HW:0 E:0% U:0.00/mTQ: 2 ST: 3 SS: 1 DW: 15 NB: 1 LW: 2 GF: 0 RF: 0Connected to <link> with LP as user noobBlock: <truncated> Started: <truncated> management [G]PU management [S]ettings [D]isplay options [Q]uitGPU 0: DEAD / 0.0Mh/s | A:0 R:1 HW:0 U:0.00/m <truncated> 22:55:56] Attempting to restart GPU[2012-02-12 22:55:56] Thread 0 still exists, killing it off[2012-02-12 22:55:56] Thread 1 still exists, killing it off[2012-02-12 22:55:56] Error: Creating Context. <truncated> 22:55:56] Failed to reinit GPU thread 0[2012-02-12 22:55:59] Device 0 not responding for more than 10 minutes, GPU 0 declared DEAD![2012-02-12 22:56:02] LONGPOLL requested work restart, waiting on fresh workI've just about had it with this program.Anyone have any ideas?

### Reply 1:
The Ufasoft miner is pretty easy to use. At least I thought so.Sam

### Reply 2:
Con, Kano,Is there a readme somewhere on how to compile for Windows?

### Reply 3:
Actually - it's in the README (well that's what I used to do it)Someone else is trying to make a detailed one at the moment that may or may not work well.Stay tuned ... for a few more weeks maybe?

### Reply 4:
Hehe ;-) I actually read over that in the README... I'll see whether I can get it build as well ;-)

### Reply 5:
It's a disaster, don't waste your time. It just happened to build with certain versions of all the necessary packages when I got it working at one time in the past approximately 6 months ago, and if you get the latest versions of all the packages, it won't build. One day we'll slowly shake out that mess, but given windows users are not used to compiling their own software, it has priority zero at the moment.

### Reply 6:
This is what I experienced during the weekend:I received a 5970 and replaced one of my 5870 with it, after graphic card change, the previous LinuxCoin installation cannot start correctlySo, I took another USB stick, installed freshly a new LinuxCoin on it, boot it into LinuxCoin, run phoenix miner, and all 5 GPU gave decent hash rates stable for 6 hoursThen, I downloaded cgminer 2.2.4, updated and installed other dependency packages, then compiled and started it, after 1 minute, it claimed 2 of 5 GPUs dead and rest of GPUs' hash rate dropped 20%I downloaded cgminer 2.1.2 (which worked flawlessly on the original USB stick), compiled and started (after removing the .bin file from home directory), same problemThen, I rebooted the machine, fall back to my original phoenix miner method, surprisingly found out that even phoenix only worked on one of the GPU and hang on rest of themThere is one thing I remember: Last time when I tried to compile cgminer 2.1.2, I tried to install <truncated> and libncurses5-dev but one of them just can not be found, so eventually I installed something else to bypass the dependency check. But this time, it went all smooth. I think one or both of the package<rest of post truncated>

### Reply 7:
export DISPLAY=:0before running, and try latest cgminer only please

### Reply 8:
I tried upgrading from 2.0.8 to 2.2.5 but my 5s average dropped from 715 Mh/s to 600 Mh/s.Dual 5850, one at 850, the other at 900 Mhz, memory at 300 Mhz on both. Windows 7, intensity 9.

### Reply 9:
Likely has nothing to do w/ cgminer and everything to do w/ updated drivers / SDK.To Conman:I really think including the SDK in the product title is a good idea.This scenario keeps happening over and over.a) person is running one version of cgminer and one version of SDK (say 2.1)b) they upgrade drivers but cgminer caches the bin files (SDK 2.1) so they see no change in performance. ""wow 12.1 w/ SDK 2.6 works great on my 5970"".c) some time later person upgrades cgminer = no bin filesd) on first run bin files are created (SDK 2.6) and performance is lower. wow cgminer 2.2.x really sucks.e) to confirm they try running older version of cgminer (w/ cached SDK 2.1 bin) and performance is good again.It really complicates troubleshooting as I am sure you are aware.Would it be possible to modify bin files so they contain ""metadata like SDK version at time of compilation""?Then it might be more obvious to users.cgminer 2.1.2 (w/ SDK 2.1 binaries) = 715 MH/s.cgminer 2.1.2 (w/ SDK 2.6 binaries) = 600 MH/s.cgminer 2.2.5 (w/ SDK 2.6 binaries) = 600 MH/s.Pretty obvious there where the problem lies.

### Reply 10:
Containing ""metadata like SDK"" is just as useful as asking for the output of -n which tells you the same thing. It won't stop people from asking and it won't make them read the readme wh<rest of thread truncated>
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    ""hardware_name"": ""5970"",
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  },
  {
    ""hardware_name"": ""5870"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB stick"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""5850"",
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23857,"Date: 2022-02
Topic: [b] Avalon 851 pmu change problems [b]
### Original post:
Well, I have 5 Avalon 851 devices. They had a problem with the pmu socket due to the low current, which led to the damage of the sockets. The important thing is that I disconnected them for maintenance and they are working in full capacity and with the full hash. I ordered 10 pieces of PMU left and right from the zues and they and when I install the pmu it works perfectly, but the device It does not give a hash, only the four lights of my pmu work, and it should give the hash, then it gives me 0 hashes and the four hashs 0 0 0 0 knowing that I brought devices that are already working and I moved the Pmu from it and tested it does not work and when I return it to its own device it works well what do I do now? Do I have any experiences or

### Reply 1:
Can you access the miner through the browser with your miner's IP?If you can then go to the advanced version and look for CGMiner API Log and paste it here but make sure to post it inside the code tag(a # sharp button) so that we can easily read your API logs. Also, I would like to suggest you follow the guide on how to troubleshoot this unit from this thread below- <link>

### Reply 2:
I have read this entire topic and did not find a solution. It only tells you that there were malfunctions, and I have no malfunctions in the pmu or the hashboard, but the problem is when replacing the pmu or moving it from one device to another, the hashes do not work. Is there a specific definition or a way to identify me Hashtags specifically or a program or something like that

### Reply 3:
How about the API logs would you mind copying the whole thing and paste them here?Maybe we can see the reason under that API logs without them we can't identify which exactly the issue of your miner is. Or your miner is totally dead?I don't know if there is a tool that could detect the problem with this unit or to check the hashboard just like on Antminer units where you can able to test each hashboard.Why not try to contact zeusBTC and maybe they have a tool or software that can able to use the same as testfixture.

### Reply 4:
We only need the top part of the API log eg like this from an A841: Code:[Firmware Version] => Avalon Firmware for avalon8 - 20190430 luci: b9dea8e cgminer: 139a942 cgminer-packages: bff9628Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[1551585] MW[480540049 480540144 480540247 480540331] LW[1922160771] MH[66 71 66 60] HW[263] Temp[34] TMax[70] Fan[3090] FanR[35%] Vi[1176 1176 1181 1181] Vo[3500 3517 3520 3524] GHSmm[8961.28] WU[127287.82] Freq[500.97] PG[15] Led[0] PM[2] ME[1 1 1 1] MW0[11813 11919 11939 11600 11691 11883 11623 11606 11712 11578 11665 11687 11224 11286 11780 11500 11794 11667 11997 11387 11655 11733 11765 11831 11653 11801] MW1[11979 11916 11906 12028 11698 11951 11845 11623 11631 11603 11598 11649 11912 11758 11923 11640 11738 11839 11814 11872 11867 11736 11808 11856 11788 11847] MW2[11684 11779 11648 11735 11746 11443 11557 11668 11667 11065 11819 11700 11725 11782 11762 11792 11832 11652 11956 11399 11563 11785 11878 11845 11487 11792] MW3[11923 11735 10849 11740 11877 11670 11694 11855 11749 11721 11825 11670 11856 11842 11735 11884 11740 11484 11980 11867 11727 11652 11681 11819 11542 11786] TA[104] ECHU[0 0 0 0] ECMM[0] FM[1] <rest of post truncated>

### Reply 5:
1] CRC[0 0 0 0],MM Count=5,Smart <truncated> <truncated> I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=17548,AUC <truncated> <truncated> Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 <truncated> <truncated> <truncated> Elapsed[98] MW[0 0 0 0] LW[0] MH[0 0 0 0] HW[0] DH[0.000%] Temp[18] TMax[18] Fan[1230] FanR[10%] Vi[1232 1232 1218 1218] Vo[4014 4031 4006 4022] GHSmm[0.00] WU[0.00] Freq[0.00] PG[15] Led[0] PM[0] ME[1 1 1 1] MW0[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW1[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW2[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] MW3[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] TA[0] ECHU[131073 131073 131073 131073] ECMM[1] FM[1] CRC[0 0 0 0],MM Count=1,Smart <truncated> <truncated> I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=18161,AUC <truncated> <truncated> Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work <truncated> Diff=1.00000000,Max <trun<rest of post truncated>

### Reply 6:
These are the settings after changing the pmu. Is there a solution to this problem?

### Reply 7:
PG is 15 which means the PMU is normal.I could only see is the two logs with abnormal value both ECHU and ECMM.Now start with those logs check this image belowNow you should got the idea base on description logs there might be issue on mm board or connection pr<rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon 851"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""pmu socket"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PMU left and right"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer units"",
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  }
]"
20881,"Date: 2016-01
Topic: Antminer s7 defective fan 3 or something else?
### Original post:
HelloI got a few days ago from Batch 9 a few antminers S7 4,73 and all working great until today that one of them start blinking red light and hear a beep sound every 1-2 seconds....The configuration is default as i just change only the username for the antpool and never change anything else.I notice that the s7 connects to the antpool and start mining at 1TH and then 2Th and goes up and after about 4TH goes back to zero.Then i just notice that then fan 3 speed is 906 rpm only as the rest of my adminers has more than 4.000 rpm for fan 3....Do you think the problem is the fan (the one that takes out the heat without the metal in front) or something else?I already contact Bitmain and i am waiting for instructions but i am just asking also here for opinions Thank you

### Reply 1:
Well you could swap the fan to a good miner.Pull the good fan from the good miner leave it aside.Pull the bad fan and put it on the good miner.If it works the issue is not the fan.If the problem moves to the good miner it is the fan.You are better off that the fan is bad.If the bad fan works fine once swapped you most likely have an issue with the controller.

","[
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    ""hardware_name"": ""Antminer S7"",
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    ""hardware_name"": ""fan 3"",
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  {
    ""hardware_name"": ""good miner"",
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    ""hardware_name"": ""bad fan"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""good fan"",
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]"
10029,"Date: 2016-10
Topic: Need help on S9 first farm setup
### Original post:
Hi,I'm a new miner. I just bought some S9s. I'm looking to start a new farm in my existing warehouse and I'm not sure exactly what I'll need. I searched for a guide on how to setup farm but didn't really see any. So I'm asking the more experience miners for advices.My current warehouse is just for storage of non-computer items. So I need to modify the electrical panel to accommodate the power hungry S9s. Do you know what I'll need to tell the electrician so he'll know what modifications to make?What thoughts you have on how best to ventilate the enclosed warehouse?I know the S9s doesn't come with a power supply and a power cord. I'm looking at EVGA SuperNOVA 1600 G2 Power Supply. What do you think?I heard that the 220? volt is more efficient that the 110? Do I simply buy a 220v power cord and plug it into the EVGA power supply?What power cord do you suggests?Let me know what else I need to consider in planning out this farm.Misc Questions:How are the S9s connected so that you can monitor all of them?Is it ok/wise/safe to have the S9s run 24/7? Does the farm need constant attention where I need to be there physically everyday to make everything is ok or can I monitor it remotely?Tha<rest of post truncated>

### Reply 1:
my advise is buy a 2880w psu package from finsky or one of the other reputable members 2880w psu will run 2x s9's for about the same price as that evga psu and since its in a warehouse i doubt noise is an issue there is also the dps 4k setup which will power 3x s9's from one psu and will fill up a 20 amp 220/240 line the server psus require 220v so just have ur electrictian run a 20 amp 220v line to were the miner will be , no need for a special cord , just take the cord that comoes with the psu and cut the wall end off and get the end for the outlet u are using from the hardware store and put it on the power cable , green to the ground pin , and black and white goto the other 2 pins for 220 as long as ur in the usa. being as u said u have 110 or 220 i take it u are using 220 over 110 has 2 advantages , most psus are more eff at 220 and u can pull more power over the same line 1300w on 110v is 11.81 amps u could not run 2x s9's on a single 20 amp 110v line1300w on 220v is 5.9 amp u could run 3 s9 on a single 20 amp 220v line so if u plan on more miners theres a cost savings cause u dont need to run as many lines as well yes they can run 24/7 , for monitoring u can use soemthing lik<rest of post truncated>

### Reply 2:
Just throwing this out there, but these are questions it's usually wise to answer before laying down four figures on equipment.220V is a better option for loads in this power range. You can run three S9 to a 20-amp circuit.I'd recommend server PSUs over consumer ATX supplies. Comparable efficiency, lower cost, modularity and easy to replace.You'll want to keep the ambient temperature below 90F, preferably below 80F. These miners are fine to run 24/7.Remote access will give you a lot of control, but occasionally they might lock up or a fan will kick out or a PSU will trip that'll require on-site attention.So, pretty much what he said.

### Reply 3:
^^^ sidehack also sells server psus breakouts and stuff <link>

### Reply 4:
Thanks for your replies. I am in the US.Because this is new to me, I wanted to start out small. As things goes well, I do plan to purchase a more. So I do want to plan ahead. @sidekick, I usually plan things out before taking action. This is an exception.For ventilation, I was thinking about having an hvac guy cut a hole in the ceiling with a fan sucking the air out. Is this a good idea?As far a network goes, I assume I would connect all of the S9s to a 40 port switch or something?What internet speed does the S9 require?The S9s doesn't need to be in an absolutely dust-free environment to operate right? Just normal environment works fine?@jstew, ""no need for a special cord , just take the cord that comoes with the psu and cut the wall end off and get the end for the outlet u are using from the hardware store and put it on the power cable , green to the ground pin , and black and white goto the other 2 pins for 220 as long as ur in the usa. being as u said u have 110 or 220 i take it u are"" I'm really hesitant/dare i say afraid, when it comes to electrical things. I don't know if I am competent enough to cut cords and splice them together. Is there an already made cord that I can buy<rest of post truncated>

### Reply 5:
Dust-free would help, since heatsinks can get clogged. As long as you kick the dust out of them regularly (compressed air and whatnot) they can survive about anything.Yep, the S9 has ethernet built in. You'll hook 'em all to a network switch. They are also set up for DHCP, which means they don't have preset IP addresses so your router will have to handle that. Most do automatically, but it's something to note just in case.Miners don't require much bandwidth at all. The mos<rest of thread truncated>
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    ""hardware_name"": ""S9s"",
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    ""hardware_name"": ""EVGA SuperNOVA 1600 G2 Power Supply"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""2880w psu package"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""dps 4k setup"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""server psus"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""server PSUs"",
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    ""hardware_name"": ""40 port switch"",
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22548,"Date: 2018-04
Topic: Antminer S9 FAN stop, start, stop, start for 500 rpm
### Original post:
Hiantminer S9 and fan on it periodically stop and starts, about 5 seconds go and stop 1 second, then 5 seconds go etc.On web it is showing it has from 300 to 700 rpm.I replaced it with new fan QFR1212GHE, after that web is showing fan has 30000 rpm (yes 30000) and then 0 rpm and miner stops at all.What is wrong here, fan or control board? Is my replacement fan QFR1212GHE wrong as replacement for Antminer S9?thanks

### Reply 1:
Your fan couldn't detect properly that is why your miner stops.Put back the old fan and try to perform a hard reset first or reflash it with other firmware before you are going to hardware.Anyway, to perform a hard resetFollow this guide <link> hard reset won't work then do reflash your miner, you can download the firmware here <link>

### Reply 2:
Ok it was defective fan, fan from other antminer is working fine.Question: fans are incompatible for Antminer, even if the fan is standard 6000 rpm 2.7A ? As I have QFR1212GHE, I got model number from picture on bitmain's web site, but this fan is not working. It show 30000 rpm and then 0 rpm.thanks

### Reply 3:
Make sure that the fan you are trying to use has the blue pwm fan cable on the end, some versions of fan QFR1212GHE have this cable in one of the middle sockets.

### Reply 4:
Did you try to reflash it with new firmware? Or hard reset it 2 times?If this still didn't work you can try to modify the fan speed maybe you just need to adjust it and decrease or increase the speed of your fan.I found a solution for modifying the fan speed and frequency you can try this method.<link> the images 1 by 1 and edit the fan speed.Test your miner every time you change the fan speed if there are no changes maybe your fan is not compatible with your miner. So make sure it's compatible on your miner.

### Reply 5:
I did not try flash it, because as I wrote, after using fan from another antminer it is working ok.it was black red yellow blue. in some old QFR1212GHE datasheet I read that yellow is PWM so i tried swap yellow and blue, it again not work, with different error in kernel.log - can't set fan speed, or something like that. Still I do not understand why? the QFR1212GHE is not working? it's on bitmain's web site in photo as spare part. Original fan is Martech DF1203812B2UN

### Reply 6:
Can you post the kernel.log here and let me review the logs and put it inside the code sample below.Code:Copy paste your codes hereHope that you check the link that I posted above it includes how to modify the fan speed then set the fan speed 75% or lower. If not your fan might be <truncated> note: This post was edited by frodocooper to remove an unnecessary quote.

### Reply 7:
This is strange, because I already wrote 2 times that is was hardware fault of fan, so after replacement all is ok, so I won't flash it, no reason.

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""QFR1212GHE"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Martech DF1203812B2UN"",
    ""hardware_is_owned"": false
  }
]"
22257,"Date: 2018-01
Topic: Note: Bent fan covers on latest batch, it's probably worth checking
### Original post:
Just wanted to leave a note that if the latest batch gives a fan error, check that the wire cover over the fan is not bent down and touching the fan. A devices in my latest batch had this issue, and it was a little hard to see because it looked pretty good and not totally smashed. But lo and behold, the wire cover was pressed in to the point that it blocked the fan from spinning - the device failed fan test and wouldn't mine.My guess is that the boxes got dropped on the end during shipping or something, resulting in the cover getting bent in against the fan. A quick bend back to normal and it started up perfectly. On a lighter note, this batch is by far the best I've gotten (so far). 14.1T average on a 13.5T batch, Bitmain must have run out of shitty boards to stuff in with the good ones, lol.

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15674,"Date: 2016-01
Topic: Miners should Start a Union
### Original post:
We demand higher price. We no sell coins !seriously its worth thinking of haha imagine if the TOP 5 mining farms (or maybe 10-30?) would demand to sell coins for 10-20% higher then todays value.

### Reply 1:
well i cant take to seriose but union its a good idea im free to say what we need its work into that porject for like a sindicate that cares for miners porfit

### Reply 2:
A Union...... You gonna go on strike?

### Reply 3:
ah, so if there will be union of bakers, tomorrow will cost one baguette twice more? please wake up...

### Reply 4:
if every baker would unite and sell baguette for 2 Euro instead of 1. then yes it would.

### Reply 5:
This makes no sense at all I am sorry. It's so flawed I don't even know where to begin at.What could work, but extremely unlikely, would be if two pools control over 60% of the hashrate and agree on refusing transactions with low fee. Then they would be working together to only mine transactions with high fee per kb. This could backfire into rendering bitcoin useless and their mined btc rendered to 0$ but most likely they would stop and realize the mistake before that happens.

### Reply 6:
This has been discussed many times, large miners forming an OPEC-like organization, control the coin supply and set the market priceHowever, bitcoin is not like petroleum, it can not be consumed, thus the market supply mostly come from existing holders. Even if miners control majority of the daily new coin generation, that's still a small amount comparing with the daily coin cash out from previous owners. And after the next reward halving, their influence will be even less

### Reply 7:
In the USA this is known as price fixing and violating Anti-Trust. So that would be a no from me.

### Reply 8:
If they refused to mine because they want the price to increase, then the network hash rate would go down. This would cause a difficulty drop and other miners and pools would just pick up the slack once the difficulty drops. Or, the network will be just as safe and secure without them after the difficulty drops and those miners are ignored.

### Reply 9:
they could do it easily, because they have already roi'd, and adding new equipments wil roi in a second, so they don't have that problem of returning their investment, also they pay a very cheap electricty, they could agree to set their sell order on a +1% every day at the very least

### Reply 10:
Your union sounds like a federal reserve system not a union.Chomsky on Federal ReserveWe already have significant amounts of hashing power in a few hands and any 'union' would act in their own selfish interests and if they could adjust the price of BTC they would.They 'un'-fortunately do not have the resources just to HOLD back bitcoin as they have significant investment in the equipment and space in which they operate.If they could manipulate the price they would, ala Mt. GOX, without having to form a 'union' there are greater powers at work who moderate the price of bitcoin.Careful what you wish for there is already a club for those who have the majority of the bitcoins... <link> half of BitBeat spent last week moderating discussions at the inaugural Blockchain Summit on Richard Bransons Caribbean island, Necker Island.It was perhaps inevitable that an exclusive event in a tropical idyll, where businessmen hobnob in the presence of one of the worlds richest men, would elicit allegations of elitism from some of quarters of the bitcoin community (as well as the occasional conspiracy theory.) But as the summit progressed, it became clear that the attendees had grander and, arguably,<rest of post truncated>

### Reply 11:
Decentralized supporters unite!!ohh wai....

### Reply 12:
Bitcoins have been popular for mining. And also mining has been proved as the best method of getting bitcoins for yourself. Bitcoins mining is done in almost every country. So, we can easily estimate that there are millions of miners all over the world.There's a proverb that there is strength in unity. And, that can do wonders if done in mining.According to me, miners should start a union for mining. In which they will work together. This will increase profits as there will be involvement of many people. As it will be a union, it will be recognized under one team and it will be more famous too. Overall its a good idea. But, it depends upon the way people work and their mutual <truncated> I'm in favour for it.

### Reply 13:
Haha, yeah! Trying to centralize something which is decentralized by it's nature is an interesting concept... But will it work? No, of course it won't.

### Reply 14:
That may of worked when miners owned more of the Bitcoins. Now that is not the case and the miners are not determining the price. Miners for the most part need to sell their coins immediately to cover their expenses. What they have left they are saving but that is not enough restriction of supply to affect the price in <rest of thread truncated>
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21179,"Date: 2016-11
Topic: Mining farm Network issues
### Original post:
I have a small mining farm, 23 machine in total that have been spread out over a large building. I have over the last 6 weeks having building one room to put them all in and have been moving them there as my electric panel was upgraded. The new room had about 18 in them yesterday and I started having problems 1 machine would start hashing and then just reset after a few minutes as more were added to that network. I moved that machine back to an old room and is fine, has run for 12 straight hours. So I feel like this is the network connections because its the same PSU, same machine, just hooked up to a different switch. Heres how I get my cat 5 to the new room being that its pretty far away from modem:Modem - 18 port switch - 5 port switch - 5 port switch- then main room 24 port switchWhat should I look for in buying in a new switch to replace the older 5 port ones? MAC address table rating? as the 2 5 ports are only 1KWhen I finally fix this I will be:Modem - New 5 port switch - new 5 port switch - then 24 port switchThe 2 five port switches right now are netgear fs608v2 and fs608. Have I bottled neck my network through one of these switches? All these machine were running fine and<rest of post truncated>

### Reply 1:
Check your wiring - mining hardware doesn't use enough throughput to overload a 10 Mb Ethernet connection, much less 100 Mb or Gigabit.You could also have a port going/gone bad - did you try using the machine on a different port of the SAME switch?Also, I strongly recommend that you don't use the ""silver case"" Netgear stuff. It's ""consumer-grade"" cheap and does NOT stand up well or long term.Upgrade to their ""blue box"" professional gear, THAT stuff works well for very long time at a time and the price isn't much more.I've got FS108 switches that are 15 years or more old that are still working well (one is a bit over 20 years old).ALL of their GS-series junk I ever bought died in less than 5 years and one of them died about 2 months after the warrentee ran out.I've NEVER had a blue-box Netgear switch die to date.(I did have a blue-box 10 Mb HUB die, but it was used when I got it and it lasted over 10 years in MY usage).

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22468,"Date: 2018-03
Topic: Anyone had a problem connecting antminer s9 other than antpoot?
### Original post:
I have tried and tried to connect to other pools but it just didn't work. Miner just stops working.<link>

### Reply 1:
All your screenshot shows is that bmminer isnt running. Try putting antpool as the backup pool so it starts hashing and you can see if its reading the pool as dead or not.

### Reply 2:
Please post the ""Configuration"" page.

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11274,"Date: 2023-03
Topic: Gordon Moore, creator of Moore's Law has died.
### Original post:
He is co-founding Intel I mean this man was a revolutionary despite his law Moore's Law is no longer relevant. But still this guy was the father of Chip. Well the only thing to say right now is Rest In Peace Mr. Gordon Moore

### Reply 1:
RIP Gordon

",[]
11754,"Date: 2012-01
Topic: some donate, some don't, collection for cgminer[39.6confirmed]
### Original post:
sent 10 a couple of hours ago confirmed in irc

### Reply 1:
Holy shitballs, why is shipping so expensive? 75 dollars? Sure you don't mean pesos or something?

### Reply 2:
Something tells me that ckolivas doesn't live in the same country.

### Reply 3:
US -> AU

### Reply 4:
Same country as what?

### Reply 5:
The OP.Nice OS/2 avatar, BTW.

",[]
22521,"Date: 2018-04
Topic: Control Antminer front-panel LEDs from command line?
### Original post:
Has anyone figured out how to control the AntMiner's front LEDs (green/red) from the command line (when logged in via SSH?) It would be nice to be able to flash them to help locate a particular miner in a rack. I have some S9s.

### Reply 1:
Figured it out.On my Antminer S9s, red light is on gpio 37, green light is gpio 38.

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9958,"Date: 2016-08
Topic: Universal Hash Board: Bitmain 1384 ""UHB_BM1384""
### Original post:
The ""Universal Hash Board Standard"" first introduced here:<link> now being applied to Bitmain's BM1384 for learning purposes.It is our goal to apply this preliminary standard to as much hardwareas possible to make sure it can accommodate all possible small ASIC string designs. Universal Hash Board: Bitmain 1384 ""UHB_BM1384"" <truncated> <link> <truncated> <link> <truncated> <link> <truncated> <link> The PCB layout needs rework after a few changes to the dimensions of the PCB and some small changes to the schematic. Files will be updated as soon as its complete. Done! Links updated as of 08/22/16Looking for help. Anyone have some dead hardware they can donate to this cause? Looking for dead hash boards and controllers for AVALON 6, S7 and S9.Thanks for all the positive criticism. Small preview of the electrical Spec's:

### Reply 1:
Final changes have been made to this board and the links in OP have been updated.Hopefully it will be of use for anyone looking to do anything with S5 Bitmain miners.There was a wealth of information learned about bitcoin mining hardware while working on this.Avalon 6 is next!Thanks for checking it out!

### Reply 2:
Pretty cool,but....why are you wasting your time & energy on this,no one will ever get ANY chips from ANYONE & the miner makers won't use your layout anyhow BTW,only 2 ASIC companies left AFIK,Bitmain & BW,maybe Avalon.Doubt they have any interest in your designs.....sorry

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23711,"Date: 2021-09
Topic: APW9+ (S17+) power supply 0 volts.
### Original post:
Hi!A apw9+ deliver high current without any hash board connected?I have a s17+ miner and the PSU feed the control board and vents, but on the high current i have 0 volts.I dont know if there is a PSU problem or something else...Tnx

### Reply 1:
OK,After some research i figured out.The apw9+ start only if is connected to control board and control board to a hash board, or more...Now next step, hash board dissect ...

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16099,"Date: 2021-07
Topic: Best Mining Container
### Original post:
Hi,I am looking to get a mining container to put on my backyard. I have an 800A service that just finished being installed that i am ready to use now The true question is, should I try to do something on my own, or invest in one of these mining containers?I have seen that there are a few companies that manufacture these shipping containers, some crazy stuff. Have anyone tried these here? What are the things to look for when researching which to use? Does anyone know costs and specifications? <link>

### Reply 1:
How close are your neighbours?

### Reply 2:
Not close at all. Closest residential is 7.5 miles away! But I understand your concern lol

### Reply 3:
Hi, I'm new here (hello everyone).I'm from Europe and in the process of ordering one 20ft container. I have in my shortlist two companies that sell containers.<link> <link> you can see specs are more or less the same and asked price aswell.I personnaly wouldn't do it by myself as the power supply is pretty high in terms of Ampere which means you need to have the right section of cables, right breakers etc. When I see the headacke to find the right spot to install 30 + (1500-3000W) miners I don't mind to invest in a container solution.How many miners do you plan to start with in your container?PS : Bitmain is also proposing one but they run out of stock (but I think they produce it on demand).

### Reply 4:
I have 300 S19s. I've reached out this these guys and I might go with them, as i seek UL listed components so i can have everything insured. Wish me luck!<link>

### Reply 5:
Looks amazing!Candid question if I may ask : how much approx the insurance company is charging you and what cover the insurance exactly?

### Reply 6:
Looks pretty damn nice.In line with UL and insurance do not forget the power cords feeding the miners. Stayonline.com makes and sells Made-in-USA UL listed power cords.

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22471,"Date: 2018-03
Topic: Avalon Firmware
### Original post:
Hi, wondering if it safe to avoid multiple controllers for 821 and the 841 coming. I have a few slots open on a controller and would love it was functional and safe to do so. I know it is not recommended and Canaan states you should have a separate controller for each miner version but figured would check with the community to see if there has been success.

### Reply 1:
The main problem is that when upgrading the *.mcs miner firmware it is applied to ALL miners on the controller. Considering the .mcs firmware is model-specific and a 821 will not like thinking it is now an 841 and visa-versa I don't recommend mixing them.Been there, done that mixing 721& 741's on 1 controller....I just ordered 2x of the 841's and got another controller with them for that very reason.

### Reply 2:
Appreciate the details in the reply NotFuzzyWarm, about what I figured but thought I'd ask around. Lock it up Mods, thank you.

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9979,"Date: 2016-09
Topic: New BITMAIN APW3+-12-1600 PSU
### Original post:
With all the hype surrounding the R4 and the APW5 PSU, i haven't seen much on the new\revised APW3 that BITMAIN put out. (OLD) APW3: <link> APW3: <link> two differences I noticed it that the DC Rated output goes down from 12.15 to 12.00. Also the physical dimensions change, its a bit larger on every side. Anyone got their hands on one of these yet?

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21208,"Date: 2016-12
Topic: Antminer S3 stops mining
### Original post:
Hi,I recently got an Antminer S3. I have it connected by cable to a wireless access point which is again connected wireless to my router. When I power it up, it mines fine. But after a random few hours it stops mining. By this I mean it suddenly gets 0GH/s on the ""Miner Status"" screen and all shares are discarded. The fans are still running and the web-interface is accessible.I have done some troubleshooting and this is what I got so far:-The only way I have found to start mining correctly again is turning the PSU off and on again.-Rebooting from the S3 menus, restarting the wireless access point, or removing/inserting the LAN-cable does not help. Also, if I do any of this while it is mining correctly, it stops mining as described above and I have to restart the PSU to get it mining again.-I have tried both static IP and DHCP in WAN settngs. Makes no difference.Any ideas? I suspect that the problem is triggered by the wireless access point losing the wifi-connection for a short moment (just my speculations), but I have no idea why the S3 is not able to start mining again when the connection is back.

### Reply 1:
I've had a similar problem when I was using an unstable router.If you internet connection isn't stable, you'll have trouble mining without having to restart the miner.Not much to do on the miner itself, I'd try to fix the unstable internet issue.

### Reply 2:
Thanks for the reply! At least its helpful to hear I'm not the only one with this problem.I dont think there is much I can do about the network. The wireless access point has a good connection and I have used it before for other applications with no problem. Also, I need run the mining through the wireless access point because the miner in in my basement, too far from the router to cable. I am hoping there is a way to solve the problem in the Antminer settings. I find it very strange that a reboot from the web-interface causes the mining to stop, and the problem seems to be related to this since it gives the same result.If I cannot find a way to solve the problem I will make a workaround by connecting the PSU to a timed relay, restarting it every few hours. But if anyone has any other suggestion, please let me know.

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22926,"Date: 2019-04
Topic: problem Configuration Dragonmint t1
### Original post:
hiI had problem with t1 , I configured it for enter pool , not save and return to default , I tasted some pool but not work , please help me , I did rest factory and update last Version , but not work it error currently using fixed pool setting<link>

### Reply 1:
What reset factory did you do? Did you reset it through webGUI?Try to hard reset the miner using IP/reset button that you can find in the front of the miner. Here is the image below. Hold them for 15 sec. after you run the miner for 5 to 10 minutes you should see that the miner will automatically restart/reboot. Now, configure it again and try Sigma pool or try kano.is pool and let's see if it works.

### Reply 2:
HelloThanks for the replyYes, I did factory Reset through the webGUI.Your method also did not work. Hold IP/reset 15 Sec but not hard resetThe miner works fine, but I can not change the pool address! see screenshot <link>

### Reply 3:
The screenshot link doesn't work I think better to the screenshot in other image hosting like <link> If it doesn't work the only solution that I know is to flash the miner through SD card with Braiin OS but let me ask first if the miner still underwarranty? If it still under warranty much better to contact the support about your issue from here <link> or contact the distributor if where did you bought the miner.

### Reply 4:
Under warranty? Really? ROLF... ref <link> and a few pages before that spot.Not surprisingly, following their 'take the money and run' biz plan Halong went out of business at the end of last year and of course ALL of the folks who bought their miners are screwed. Frankly I'm surprised their website is still alive. The only non-scammy and good thing that Halong did was actually deliver the miners before disappearing.

### Reply 5:
Owch didn't know that thing I just found their website while trying to search some solution about his problem. So, I guess the only solution to his problem is to flash the miner through SD card with Braiin OS@maxomid If ever you need the Braiin OS you can find them from here <link>

### Reply 6:
So it wasn't that bad eh? Whose chips did they use? Bitmain's? Innosillicon's? Has anyone de-soldered and inspected them? GekkoScience planning something with those? At this moment T1 users are observing 14TH/s rate while using Braiins OS, this could be because that's the true hashrate or a Braiins OS miscalculation, they are investigating...

### Reply 7:
Perhaps try to investigate by reading the main T1 thread a little before making wild speculations...a. Bitmain does not 'make' chips and certainly do not sell them to 3rd parties. BM contracted TSMC to manufacture their chips.b. The T1 chips were designed for Halong by Innosilicon and made by TSMC. Considering that very shortly after the release of the T1, Inno released their own version (the T2) that uses the same chips it all rather smacks of the kerfuffle in 2014 regarding the 28nm A1 chip that Inno designed for Bitmine.chc. As Sidehack as mentioned a while back, yes he is in talks with Inno about the chips.

### Reply 8:
Of course when i say BM i wasn't implying they manufacture them themselves, and even if they did, it wouldn't change anything. I don't see the point of arguing that. You could also say BM's chips were designed by the guy that left for MicroBT, that Bitmain does nothing but buys everything, but that's beyond the point of this topic.All i wanted to know is whose chips Halong used, and its Innosillicon's chips, thanks for the answer.

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23449,"Date: 2021-02
Topic: S9 hashrate +3.0 th/2s software?
### Original post:
Hello,I'm fairly new so please don't bash me for this question. I upgraded all of my S9s to +2.0th/s and they are all running cool. I see an option for +3 in BTCtool. Is there aflash upgrade for the S9's to take them to +3 th/s?Thanks,Andy

### Reply 1:
This should be in the mining support board instead.Short answer: NOLong answer: This is probably a glitch in btcTool, the multi-option firmware has an option to underclock the miner by 3 terahash but a maximum of 2 terahash for the overclock, you should NOT attempt a firmware upgrade, the latest version has no tuning options and you probably can't revert to the 2019 firmware which has the drop-down options for tuning, I also believe +2th is already good enough to sustain your miners anyway, don't push them hard.

### Reply 2:
Thank you for the reply. They are running pretty good on the +2 right now. Just saw that. Thank you for taking the time to reply.

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23523,"Date: 2021-04
Topic: Need 2017 S9 Firmware with SSH access
### Original post:
Hi I have an S9 that has the following firmware on it. Linux <truncated> #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017This is a 13.5TH unit. I would like to reflash the unit with the same firmware to see if it corrects a discarded share issue. Getting about 86% of shares discarded, with no <truncated> issues. 5 hours on and 1062 accepted and 7909 discarded. Wanting to avoid loosing SSH access and bricking the machine as I already went through this with my L3's. I use SSH on mine. There are a lot of download links just want the correct one. One that I have is <truncated> but not sure if that is the correct one to use. Thank you.

### Reply 1:
Use this link below to find the old version of s9 firmware or 2017 firmware- <link> all 2017 firmware and try and check if there are changes on the dashboard under system overview after you flash the firmware that you download is not the exact firmware that you looking for.I don't how to know the exact firmware of s9 miner by just checking it on the dashboard but you can able to download all 2017 firmware from the Bitmain download page. Just don't download the latest version that can disable your SSH access don't worry about bricked if everything is related to software you can flash the miner with an SD card to fix it.

### Reply 2:
Ok I will give it a try. I was not sure if bitmain still had the 2017 firmware available and if they did if it removed the SSH port from what they have available, even if it says 2017. When I ran through this with my L3's they didnt have 2017 only 2019 and that had no SSH access. Thanks for your help.

### Reply 3:
All the 2017 firmware options say- * Remove: post mac and stop mining interface. Does that mean removed SSH access?

### Reply 4:
It's pretty normal to have more discarded shares than accepted, you are probably worried about it because you don't understand what discarded shares mean, you can find plenty of explanation on google or this forum, no firmware will ""fix"" that for you because it isn't a problem in the first place, unless it shows the wrong status on purpose for some marketing purpose.But just to answer your question, all S9 firmware versions are ""removable"" with an Sdcard, but if don't want to go through that process, avoid every firmware that has the word ""Secured / Security"" in the description, so basically all the 2019+ firmware versions.

### Reply 5:
Thanks guys. Appreciate the help. Yeah, this S9 was brand new sealed, just plugged it in this week and getting higher than expected stats I've been mining with many L3's for a while. Just wasn't used to seeing that many discarded shares. So far today, 11 hours on, 2575 accepted and 19530 discarded with a 4.3 utility and 115HW. I understand the machine working on stuff that is already been solved/old news is discarded. Didn't know what to expect. Thanks again.

### Reply 6:
Hi, you just need to monitoring ""rejected"", only Accepted and Rejected is important

### Reply 7:
It's good that you want to learn, most people wouldn't bother. Out of all the status and the information you see on your miner as well as the mining pool, your accepted hashrate on the pool is all that really matters as far as profit is concerned, so if your miner shows an average of 14-14.5TH and your accepted hashrate on the pool is within the range you shouldn't worry about anything else, if it's off then you start looking around.

","[
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13660,"Date: 2020-08
Topic: S17e / T17e Custom firmware
### Original post:
Hi , i have take control with sucess <truncated> signature-Litle tweak for assitance of parameter (same on my S9K mod)PS : i have find tester (thanks !!!) , he should post these results soon

### Reply 1:
Thanks Yes of corse, i have promised full free for him , at this time, his miner run with my custom ""beta"" , full free of corse :pAt this time, i don't know how, but ""miner configuration page"" don't work ... no page ... i working actually for this .thanks all for support me !!!

### Reply 2:
Those temps are dope, i am glad it worked out for you, thierry4wd is indeed a skillful dude but he lacks financial support or else he would be on a different level now, I also like that fact that he is planning on a single time-payment rather than sharing your hash power.Sadly since it's summer time, i can't ask you to test the overclocking settings on this miner, hopefully you can try them out a few months later when winter comes by.For thierry4wd well done, make sure favebook gets free access for the updated versions of your firmware since he was nice enough to test it for you.

### Reply 3:
Those temps were taken at around 1AM when temp is around 15C instead of 35C(during the whole day) so they look incredible. I could test OC at around 2-3AM local time during 02.08.2020. as that is the next coldest night we will have, but I have a rather short window there to test it (1AM-7AM is only 6 hours and I might not achieve much in that time).Yes, I am as well glad that there is a single time-payment rather than % as that is much better long-term for customers.I'll be editing my previous post with up to date pictures from slushpool and miner status.

### Reply 4:
I've given thierry4wd access to my S17e via TeamViewer (I was monitoring what he is doing for 90% of time) and here are results so far:Miner Status with Downclock (FINALLY! My S17e can now run during summer without overheating every day at 11 AM due to high outside temperatures):Miner Configuration page:System status page (so you can see who's firmware it is and that it's actually S17e and not some other miner in case):Slushpool with 100% exact hashrate as reported by miner (will update after longer time of work, was restarting it a bit so there are some dips):I can post Kernel Log if anyone is interested but didn't see a point in doing so right now.Miner seems to be working fine for hours and since I couldn't find any other custom firmware for S17e until now (not even Vnish - Taserz have it yet) this is working like a charm. But this is hard alpha of firmware so do not expect much of it yet!Giving merit to thierry4wd as this is so God damn useful for me and he did me a solid! I suggest you opening a new thread when you finish your firmware or at least reach Beta.I recommend you to look into Vnish firmware and try to add same features or/and more if you can.

### Reply 5:
Link for S17E Final Version : <link> all, i have developed custom firmware for all T17 / T17+ / S17 / S17pro /S17+ with success ... but i don't have T17E / S17E on my hand, i search on guy to agree for give me access with teamviewer for test, if success, i ofer my custom firmware for him thanks

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  {
    ""hardware_name"": ""T17e"",
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  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17pro"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S17+"",
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22760,"Date: 2018-10
Topic: Antminer S9 - No data in Miner Status page
### Original post:
Hi,I recently recieved my Antminer S9-14TH/s Shipping: 11-20 Dec. I spent the entire day trying to connect it to antpool but the Miner Status page appears blank. In the System page, there doesn't appear information regarding Hardware Version nor BMminer Version. I'm posting print screens bellow. What could be causing this and how can I solve it?Best regards,Paulo<link>

### Reply 1:
Try to power off and reset your antminer maybe its just glitch or bug .. and try again.. If its not working The other way that i know is firmware corrupted and reflashing firmware would be the solution..But i don't think is it allow to reflash your antminer since its still under warranty.. Better to contact the support from bitmain and ask if it can't avoid your warranty while flashing and ask to guide you.. .Also check this guide for trouble shooting do this first to know if what problem of your hardware.<link>

### Reply 2:
I'm having the same issue. Just got this machine 2 days ago. Reset everything to defaults and got it to work for a sec. then it stopped when I put my name in instead of 'antminer' Miner Status page does not fill out, Hardware Version and BMiner Version are blank.Using 240v, Bitman APW 3++ or whatever its called (the official one for the s9) Temps are good. It sounds like the fans spin up and down in cycles a lot.Any clues would be helpful.

### Reply 3:
Thank you for your reply Bitmax,in your opinion, which S9 firmware should I install? There are a lot of options in the Bitmain website and I'm not sure what is the proper one for my device (it's a 14 THs, shipping 11-20 Dec).<link>

### Reply 4:
Just received a batch of four S9s today and am having the same difficulties as described above. One thing to note, my 'miner status' page finally came to life after waiting about 10 minutes. I have D3s and L3s and am accustomed to them quickly displaying the stats.

### Reply 5:
These machines run through a process that tests each board to determine its safest frequency. There are times when you have to wait 40 minutes or longer before it starts hashing. Have some patience.The reason everything is blank is because bmminer is running. There are no stats to display when the miner is not running, nor can the status page query the version info if it is not running.

### Reply 6:
Quick update - 3 out of 4 S9s came up after about 15 minutes. The one troublemaker has been up for about five hours and continues to exhibit the same problem. I let it 'idle' for about an hour and then try a hard reboot (pull the power, wait 30 sec, apply power). I'll let it continue for the remainder of the day and contact Bitmain if it continues on like this.

### Reply 7:
I had a few miners from my last batch with that issue. I rolled the firmware back and they all came up within 15 minutes.The firmware I used was <truncated>

### Reply 8:
How do I go about rolling the firmware back?

### Reply 9:
Same was with me. The only problem is an error in worker name or password. And yes - default antpool addresses in miner setings are void ATM so you never see it working through them hence U dont see mines status info.

### Reply 10:
Guys, change your internet cable. I was using a right angled ugreen ethernet cable and I changed it to a normal non-right angled one and now, all hashboards work FINE!! Try it. It may work for u.This worked for 2 of my antminers!!!!

### Reply 11:
Thank you jafolkerts, fanatic26, je_mario, KWMiner, LENIN12345 and Sandal_Hat for your responses.I tried to install the newest firmware (last row of the table in the link bellow) and I couldn't connect to the pool. Then I installed the one you recommended (first row of the table in the link bellow) and I was able to connect. However one of the fans (the front/intake fan) stopped being recognized, it does not even spin, and a fan-related error appeared in the Kernel file.Does anyone have an idea on how to solve the fab not being recognized problem?Best regards,PauloLink to firmware:<link>

### Reply 12:
Dear all,the fan problem was a mistake on my part. I unbolted the metal protection in the intake to see if I could fit a 3D printed part. When I bolted it on again, I put it in the reverse direction and it was blocking one fan blade. I bolted it the proper way and now everything is fine.So, the solve the ""No data in Miner Status page"", what I did was to install an older version of the firmware, specifically, <truncated> which is bitmain's suggestion to replace <truncated> the file proposed by fanatic26. I also changed my ethernet cable as porposed by Sandal_Hat.Thank you very much fanatic26! Thank you very much Sandal_Hat! I would also like to thank all the users that shared their advice with me in this <truncated> regards,Paulo

### Reply 13:
Glad it worked out for u man.

### Reply 14:
I'm seeing a similar issue. What was ultimately the problem? Firmware or having to wait for the self test to comp<rest of thread truncated>
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    ""hardware_name"": ""Antminer S9-14TH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""antpool"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitman APW 3++"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""D3s"",
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  },
  {
    ""hardware_name"": ""L3s"",
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    ""hardware_name"": ""ethernet cable"",
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23395,"Date: 2021-01
Topic: Question about immersion cooling
### Original post:
I want to try out mining at home. I plan to buy an Antminer S9 and build an immersion cooling rig, like this one:<link> question: do I need any speacial casing to cover the Antminer S9 before immerse it in liquid? I mean, can I just dip it in liquid and it still work as if it's in the air? What about the PSU, can it also be immersed or it has to stay dry, except for the connectors?I know Antminer S9 is not an ideal machine now for ROI, but this is just a start. I want to get the experience first before I dive further into mining. Anyone who has experience in immersion cooling please share you experience. Thanks

### Reply 1:
The liquid has to be insulator (doesn't conduct electricity) and so if you can sink the miner in it, there is no reason why you can't include the PSU, the only problem I can think of is that PSU might not work if the fan isn't spinning, so I don't know how they go about solving this issue, but I think since you are trying to cool the miner, there is no need to bring in the PSU's heat along, just put it outside the cooling box/container.You are also going to face the same issue with the miner's fans, but most custom firmware allow you to run the miner without fans, if you chose to run the stock firmware you will need a fan simulator, it basically tricks the control board into thinking that there are two fans spinning at 5000-6000rpms and so the stock firmware will work just fine.Yes.

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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cooling box/container"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fan simulator"",
    ""hardware_is_owned"": false
  }
]"
22797,"Date: 2018-11
Topic: How to remove heat sinks on Antminers and mount Water Blocks - Video
### Original post:
Thank you for the merits! Thanks also for the suggestion on the youtube video. What I was thinking is to make such a template on my cnc machine to hold the board perfectly straight then program the CNC to go over each IC and make it perfectly smooth. This will require a few days to get it right, but will allow saving a lot of time and make perfect job in the end. Maybe will do in the future and make a video of the process as well.

### Reply 1:
Hey guys,I recorded a video of my process of installing the waterblocks on the Antminer S9 board.Check it out and let me know your opinion, if you have questions post them on this thread. <link> luck!

### Reply 2:
Good work gave you 3 merits.to sand chips fast buy this<link> it with your cnc machine so it is a gridlay it on the pcb only the dirt chips are exposedsand with this<link> the part to be sanded is exposedyou have built a holder for the board build a template for sanding bro you will like it.

### Reply 3:
I linked a blank plate and better sanding products.Where are you located I have a good friend in the brooklyn navy yard he has a wood working shop he reminds me of you.

### Reply 4:
I understand what you are saying, trouble is that the template needs to be very fine to do that as the chips have only 1mm thickness.. and you won't be getting them through the template to sand. But I got your point.I am from Romania, a bit East from Brooklyn .

### Reply 5:
My friend is also from eastern europe. He came here 10 years ago. I knew chips were thin I thought they were a bit taller but if that thin I think setting it up with your cnc to do a pass may work better.

### Reply 6:
Yes, it's tricky business, but it can be done.

### Reply 7:
this will be risky as hell, i assume you talking about cnc router and not laser since you want to use it for cleaning the IC's ! . setting a perfect Z point on your cnc with 0% room for error is nearly ""impossible"". you will need a 100% flat ground "" maybe take an MDF sheet and perform an area clearnce with your end mill to get that flat surface"" , but then again i doubt the accuracy of your cnc will be safe to try and risk the IC's. philipma1957's idea of making a format for cleaning would make more sense, but you will need a laser cnc to do that. it will take sometime to set up perfectly, but will make your job much easier when sanding those ICs.should you decide to go for one , i can help . i have a tremendously good experience working with cnc machines.

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13569,"Date: 2018-01
Topic: RPC Miners (CPU/4way/CUDA/OpenCL)
### Original post:
What are the best settings for a ATI 5850m ?Ps: Your program is running fine good job

### Reply 1:
Play with the -aggression, -gputhreads, and -gpugrid parameters.

### Reply 2:
Help needed for <truncated> -gpu -url=<link> -user=hidden -password=hidden -threads=2If i run this i get around 2000+ khash & also hash for every 30 minutes or so.But if i run this <truncated> -gpu -url=<link> -user=hidden -password=hiddeni get this <truncated> -gpu -url=<link> -user=hidden <truncated> will start 1 miner threads1 OpenCL platforms found1 OpenCL GPU devices found on platform 0Setting OpenCL device to first device foundCreate context rval=0Create command queue rval=0Creating program with sourceBuilding programBuild program rval=-11build STATUS:build LOG:<program source>:66:2: error: call to 'rotate' is ambiguous <truncated> <truncated> source>:43:46: note: instantiated from:#define <truncated> <truncated> <truncated> d+=t1; h=t1+t2;} ^<program source>:41:30: note: instantiated from:#define rotateright(x,bits) (rotate(x,32-bits)) <truncated> note: candidate functionulong __OVERLOADABLE__ rotate(ulong, ulong); <truncated> note: candidate functionlong __OVERLOADABLE__ rotate(long, long); <truncated> note: candidate functionuint __OVERLOADABLE__ rotate(uint, uint); <truncated> note: candidate functi)2tEvBCreate kernel rval=-45Done allocating OpenCL resources for (16,16)Fi<rest of post truncated>

### Reply 3:
Use the CUDA miner for NVidia cards. The OpenCL kernel code was unable to compile on your system, that's why it doesn't work.

### Reply 4:
The first post has been updated with a new release. Now you can specify how often work gets requested from the server, and you can specify a url to show server stats in the client.

### Reply 5:
You can try to edit the cmake generated makefiles with the workaround found in this thread

### Reply 6:
Hello. I'm new at this forum. When i run make, I'm getting this: I'm using ArchLinux 64bit with gcc gcc-4.5.1-2 and cuda cuda-3.2.16-1. Can someone make amd64 binaries for me?

### Reply 7:
Now i got second problem: <link> I turn off GUI compilation, I get this:<link> you make binary package please?P.S Bd means Error

### Reply 8:
Turn off the daemon compilation as well. You only need the RPC miner. Although you will run into the same issue with the miner, see below for the workaround that should compile. GCC doesn't seem to support returning an iterator as the result of an erase on a container.In rpcminerclient.cpp, replace the CleanupOldBlocks() method with thisCode:void <truncated> std::vector<int64> m_erase; <truncated> char> > >::iterator <truncated> <truncated> i++) { <truncated> { <truncated> } } <truncated> i=m_erase.begin(); i!=m_erase.end(); i++) { <truncated> }}There's a windows binary in the first post. All other platforms need to compile for themselves.

### Reply 9:
<link> thinking about going back to ""Evil Commercial OS."" If I will get some BTC soon, I will donate it to you for sure.

### Reply 10:
It looks like it's still trying to build the remote miner. You can edit the CMakeLists.txt file in the top directory, and turn off all the options except the RPC miner and the CUDA option if that's what you want.

### Reply 11:
I just need working GPU Miner compatible with slush's pooled mining. I already tried Diablo's Miner, but openCL freezes my desktop.

### Reply 12:
You can safely remove the line from the CMakeLists.txt file where that message appears.

### Reply 13:
At the top of <link> and rpcrequest.cpp add this right after the other <truncated> <cstring>

### Reply 14:
<link> adding also #include<iostream> to <link> it compiled, but it don't fix problem in second file.

### Reply 15:
I've updated the source package in the first post with some of the compile fixes. I think I got most of the issues in your paste, but I don't understand why this error happens <truncated> error: previous declaration of int <truncated> char*, ...) with C++ <truncated> error: conflicts with new declaration with C <truncated> error: previous declaration of int my_snprintf(char*, size_t, const char*, ...) with C++ linkageMaybe some of the other fixes will resolve this as well.

### Reply 16:
Trying to run the binaries on Windows it gives an error saying that OpenLDAP.DLL is missing. Should that be included in the .zip file?

### Reply 17:
openldap.dll is in the binary zip file.

### Reply 18:
I've updated the first post with the latest release. This fixes a crash that would occur when the work being hashed became stale due to connectivity issues with the server.

### Reply 19:
please any can post some screenshot with a shoort tutorial i have windows xp64 and a phenom x6 8gb ram and video card nvidia gt240 1 gb ram gddr5 i need use my video card with my processor i obtain 7800 khash/s =(

### Reply 20:
and the results please i need help!

### Reply 21:
You have totally incorrect parameters. Do rpcminer-cuda -help to see<rest of thread truncated>
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    ""hardware_name"": ""NVidia cards"",
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  {
    ""hardware_name"": ""ArchLinux 64bit"",
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    ""hardware_name"": ""Windows"",
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  },
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    ""hardware_name"": ""windows xp64"",
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  },
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    ""hardware_name"": ""phenom x6"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""nvidia gt240 1 gb ram gddr5"",
    ""hardware_is_owned"": true
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]"
23869,"Date: 2022-02
Topic: How to turn On BLADECENTER PSU 2880W
### Original post:
<link> the Pin-out configuration to turn this PSU on?and for 220V input which one is ground?

### Reply 1:
I would highly suggest getting a breakout board -<link> you might contact OP of it if need info he has mastered using this PSU. With manufactured these things he knows pinout.

### Reply 2:
I managed to get it stated, but i can't find a way to turn on the fans

### Reply 3:
Fans feed from external power. You probably van make some kind of loop

### Reply 4:
hi, i make litle picture, just see, is easy <link>

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    ""hardware_name"": ""BLADECENTER PSU 2880W"",
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  },
  {
    ""hardware_name"": ""breakout board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  }
]"
14552,"Date: 2012-03
Topic: The miner with IP 0.0.0.0 is close to 50%
### Original post:
Look at <link> , the IP 0.0.0.0 has 67 blocks out of 151 which is 44% of all blocks found in 24 hours!

### Reply 1:
I can't believe you think 0.0.0.0 represents a single entity.edit:[20:51] <gmaxwell> gruez: no, it's just broken.[20:51] <gruez> gmaxwell: oh[20:51] <gmaxwell> gruez: The site claims the blocks are being found by 0.0.0.0

### Reply 2:
Must be a problem with blockchain.info. I don't see a huge jump in hash rate on bitcoin.sipa.be.

### Reply 3:
I do not think it's single entity but maybe it's one unofficial IP address of deepbit?

### Reply 4:
I think my head just a-splode

### Reply 5:
I wonder if (000)-000-0000 is deepbit's phone number too....

### Reply 6:
0.0.0.0 - 0.255.255.2554676 Admiralty Way, Suite 330Marina del Rey, CAUSInternet Corporation for Assigned Names and <truncated>

### Reply 7:
I heard Tycho SSN is 000-00-0000 too and his pool wallet has a private key of <truncated> (hexadecimal of course) don't tell anyone we don't want them stealing the pools funds.

### Reply 8:
If this is real, I expect people to start buying computer hardware in masse to stop the <truncated> from taking over Bitcoin.

### Reply 9:
You must be right, it must be a problem with blockchain.info. Look statistic for 4 days: it shows IP0.0.0.0 has 512 blocks while deepbit only 33

### Reply 10:
You do understand 0.0.0.0 is not a routable IP address right? I mean the ""mystery"" IP address being all zeros when zero is often a default value for unknown didn't clue you in?

### Reply 11:
Now I know it. Thanks for explanation.

### Reply 12:
Also, the person at 192.168.1.1 is releasing transactions to spend YOUR money!!!

### Reply 13:
kind of rough on a guy just for not knowing something easy to not know.

### Reply 14:
lol, i must be as well because i screwed that sentence up good. i'm just going to go 127.0.0.1

### Reply 15:
WHAT THE FUCK

### Reply 16:
Looks like ::1 has access to all your bitcoins!

### Reply 17:
WTF?!?I turned on Wireshark to confirm, and found ANOTHER IP trying to ""ARP"" my information from 192.168.1.1...WTF!

### Reply 18:
This is just another post because I wanted to see my post count at 1234...

### Reply 19:
damn, if your for real, i'm genuinely sorry to hear it. glad you've managed to keep your sense of humor.

### Reply 20:
Must... buy... tinfoil.... make... hat...

### Reply 21:
This is all very odd.Maybe it's a US multinational or a university (as I was taught in computing that the low range IP addresses were reserved for US academic <truncated> I wouldn't rule out a <truncated> trying with BTC mining.As more people become aware of mining (BTC for profit),more and more entities will be getting in on the act.I checked the IP with this :<link> typed in 0.0.0.0 and this is what showed <truncated> request .: 2012-02-26 19:03:42Remote IP ....: <truncated> .: <truncated> ......: <truncated> Query terms are ambiguous. The query is assumed to be:# ""n 0.0.0.0""## Use ""?"" to get help.### The following results may also be obtained via:# <link> 0.0.0.0 - 0.255.255.255CIDR: 0.0.0.0/8OriginAS: NetName: <truncated> <truncated> NetType: IANA Special UseComment: This block is assigned for use as localComment: identification addresses. 0.0.0.0 refers toComment: ""this"" host on ""this"" network. 0.0.0.0 Comment: MUST NOT be sent, except as a source address Comment: as part of an initialization procedureComment: by which the host learns its own IP address.Comment: This block was assigned by the IETF in the Comment: Standard document, RFC 1122, and isComment: further documented i<rest of post truncated>

### Reply 22:
umm, the relevant bit is right in your post:what that means is that it is an ip that is only used on local networks, not the internet. like 192.168.2.1 is usually a home routers ip address (not an internet ip address) and 127.0.0.1 is the localhost, which is basically a reference to the current computer.

### Reply 23:
Since it's 0.0.0.0, what this thread really needs is a...

### Reply 24:
Please tell me you're trolling, 0.0.0.0 is the address for ""broadcast to ALL the networks \o/"".

### Reply 25:
Didn't you know? It's Zeta-Reticulans joined the party!

### Reply 26:
No, the first two were fake. The third was true. Also this week: I caught the flu from one of my family members at the funeral, a sibling was involved in a domestic disturbance, I found out my only surviving grandparent has brain cancer, a tornado hit the town where my parents live, and apparently I donated 37 BTC the night I wrote this to victims of a Bitcoin scammer.Let this be a lesson to you, kids, don't drink and bitcointalk.

### Reply 27:
OK.. 0.0.0.0 aside.. got a serious question... How do you come up with the IP address of the miner/pool? Looking at raw blocks in block explorer I don't see an IP address anyplace ..Sigg

### Reply 28:
lolyup

### Reply 29:
The chart uses known IPs of pools (that people report, or that are shown in pool do<rest of thread truncated>
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23709,"Date: 2021-09
Topic: Right sizes and model resistors and capacitors for hashboards
### Original post:
Hey guys,Any fellow technicians here have an idea what range of surface mount capacitors and resistors to order for repairing hashboards?I see a lot of different sizes. But they are too small to measure myself obviously. So it would be helpful if anyone would throw in what kit or ranges to buy so it would cover pretty much most of the S17 model hashboards.Or just throw in a link and I'll look for it in local shops myself.Thank you!

### Reply 1:
Try to contact zeusbtc if they have available capacitors and resistors or try to check this link below- <link> don't you just check the model name of the capacitor? you can use it to search on Google to find where you can buy them. However, you can try ZeusBTC and I think they have parts that you need for s17 units.

### Reply 2:
I already did, they are really difficult to communicate with once you go in to detailed technical questions.And the resistors on the board are unmarked. They are just too small...But I found quite some info.Apparently the resistor sizes are mostly 0201 and most resistors used are 30 ohms and I think 100 kOhms.Still looking for the right capacitor sizes.Zeus really isn't the most helpful. The Russian youtubers are quite good, too bad I don't really understand them... The auto caption is still far off...But little by little I'm getting there.

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3915,"Date: 2016-02
Topic: [Group Buy] Avalon ASICs CHIPS! Using JohnK as Escrow! 700+ / 780 BTC pledged!
### Original post:
Go ahead and bump my order up to 5.46 BTC for 70 chips even. Thanks~

### Reply 1:
Confirmed. I'd prefer if everyone ordered in even amounts for the chips - that would ease calculation a lot when shipping the chips.72.818BTC left!

### Reply 2:
I'd like to up my order by a small fraction. From 2 BTC to 2.34 BTC. I'm trying to get to 30 chips total. Thanks John!

### Reply 3:
Updated by ragingazn.Everyone, please send to the given escrow address as the amount is reached !

### Reply 4:
We have reached the threshold! Please start sending to:]I also updated the column on how much you NEED to send to Escrow's Address. The formula:(# of BTC Pledged)*(JohnK's Fees)*(OP's Fees) + (2.1 |Avalon's Shipping| divided by 60 total people)Group Buy#1 is now currently closed and will not be accepting any more pledges. Please after you send POST YOUR CONFIRMATION LINK or what you have here!Thanks! Let's get this thing ordered by tonight guys!

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4128,"Date: 2012-07
Topic: USB-FPGA Module 1.15y from Ztex not working
### Original post:
Hello. I am owner of USB-FPGA Module 1.15y card. Unfortunately, It doesn't want to work with BTCMiner. It shows in lsusb as totally different device. All other cards, which I have can be seen in lsusb as (for example one of them):Bus 001 Device 023: ID 221a:0100Code:But one of my cards show itself as Cypress Semiconductor Corp. device. All results here:Result of lsusb:Code:Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubBus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubBus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubBus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubBus 001 Device 020: ID 04b4:8613 Cypress Semiconductor Corp. CY7C68013 EZ-USB FX2 USB 2.0 Development KitBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubResult of lsusb -v:Code:Bus 001 Device 018: ID 04b4:8613 Cypress Semiconductor Corp. CY7C68013 EZ-USB FX2 USB2.0 Development KitDevice Descriptor:bLength 18bDescriptorType 1bcdUSB 2.00bDeviceClass 255 Vendor Specific <truncated> 255 Vendor Specific <truncated> 255 Vendor Specific <truncated> 64idVendor 0x04b4 Cypress Semiconductor Corp.idProduct 0x8613 CY7C68013 EZ-USB FX2 USB 2.0 Development KitbcdDevice <rest of post truncated>

### Reply 1:
Are you running in Linux? try sudo java -cp ...

### Reply 2:
Yes, it's in Linux, on root account. You don't see # at the beginning? That's root prompt. Another 3 FPGA's are mining now nicely, just this one have problem.

### Reply 3:
The 3 other ones that are mining nicely are 1.15y? For BTCMiner, even on root account you have to use sudo. You can also modify one of the configuration files so you don't have to use sudo.Also, what do you get when you try sudo java -cp <truncated> BTCMiner -i ?

### Reply 4:
You already asked this per email. Answer is the same: USB ID's 4b4:8613 are the ID's of the USB controller. This means no firmware was loaded.Firmware can be loaded in single mode using the parameter ""-f"" or can be installed permanently in EEPROM using the parameter -f in programming mode. See <link> for details.Also make sure that JP1 is open, see <link>

### Reply 5:
Thank you ztex! I am so glad that I can rely on your help. I upload firmware using programming mode, everything is fine now. I was confused, because 3 others FPGA's did not required any programming, just run and go.Thanks

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11266,"Date: 2023-02
Topic: actural_vol = 0.00
### Original post:
This is driving me nuts. Where is the ADC that is reading the power entering the board aka actural_vol = 0.00? Im looking at a S17 but I believe this applies to all bitmain boards. The ADC is short for analog-to-digital converter. Its what is required to convert a signal like a voltage swing into binary, something usable by logic circuitry.Thanks,J

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17238,"Date: 2012-08
Topic: Starting over, mining with 2x5830's
### Original post:
I think I'm going to start my miner over. I've got 2 5830's What's the easiest and most stable build? I'm not a linux junky so I may stick with windows 7. Not sure.

### Reply 1:
Step 1: Install WindowsStep 2: Install <truncated> 3: ? ? ? Step 4: Profit!

### Reply 2:
Just get at least 600 mh/s with whatever u are using and u doing great.

### Reply 3:
Agreed. It shouldn't matter what platform you use, Windows or Linux, as long as you can squeeze at least 600Mh/sec out of your twin 5830s you should be able to cover your electricity costs and then some (depending on how much your utility screws you for power).A word of caution, however; make sure you have a power supply that can handle what those two cards will draw, and that you don't have too many other peripherals to run at the same time. If you use Windows, run msconfig and turn off all unnecessary services and processes you really don't need to run while mining (e.g., print spooler, volume shadow copies, bluetooth, Windows themes, etc.). I have blown a power supply by over-stressing my system, and you don't want to risk damaging your hardware that way. I now have a 750W PS so I shouldn't have to worry about that any longer, but my old 400W power supply is now in the hardware graveyard, thanks to overclocking my 5850.

### Reply 4:
Or just buy a bigger PSU?Lol if you're really worried about power saving that much, start by disabling devices in the BIOS. Miners don't need wifi, audio, secondary sata, etc.

### Reply 5:
Most 750 watt PSU's can run 4 x 5830's without a problem

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9861,"Date: 2016-06
Topic: IBM takes a leap to 7nm
### Original post:
<link> When I was reading this I only had one thing in mind. How efficient our miners will be with this advancement. Hats off IBM.

### Reply 1:
Nice, but we're years away from seeing that in a miner.

### Reply 2:
Or it becoming worthwhile for any manufacturer to stump up what, $10M to have a go at 7nm.

### Reply 3:
Well, thinking about it in an optimistic way. If someday in a year or two if we get to see some hardware running on Asic boost as well as 7nm tech. It'll be like next level of efficiency in mining and network hashrate of aboth 10Eh/s. But only if IBM is generous enough to share some details on their 7nm. I really hope from the bottom of my heart that this happens.

### Reply 4:
Meh, people have been claiming this since BTC asics first showed up. It took just over 3 years to go from 130nm to 14/16nm. This space is so full of retards I think it's quite possible someone is going to start working on 7nm as soon as tools are available.

### Reply 5:
That would be the ultimate form of mining centralization. Hope that never happens. Because IBM will never open source their design.

### Reply 6:
Indeed centralization is an issue but still, it can restore home mining to an extent.

### Reply 7:
That's a terrible example. How long did it take us to actually release 16nm after it was 'available' and even after everyone announced their chips, 18 months?

### Reply 8:
A year max.

### Reply 9:
It was late 2014 when companies started announcing chips to arrive early 2015. It was May 2016 by the time we had public delivered 14/16nm.

### Reply 10:
And how long between when the first foundry announcements of ""16nm is possible"" and the first actual marketable chips coming down the line? There was a thread on here a year ago about IBM moving into 7nm. How long is it going to take to make it work once they solve the problems with 10nm, which will probably come after they figure out how to make 14/16 more reliable for mass production?

### Reply 11:
Wow,how the hell will this help home miners?? You think you will be able to buy these as soon as they are made?? Or even be able to afford them??Think again,ONLY Bitmain & Avalon are dumb enough to sell to home miners,all others are doing what with ANY miners they make?? Lets see...what are they doing....what are they doing....Oh selling to the highest ""bidder"" or self mining,thats <truncated>

### Reply 12:
Bruh! I'd like to answer your query with just one quote. ""In an era of mining gold openly. The one who earns the most is the one who sells the shovel."" Hope this helps you understand what I'm trying to say.

### Reply 13:
This is really impressive. On these dimensions you start to get to the point where the doping of the silicon in the channel is provided by a single phosphorous atom, and the electron's wave function is delocalized over the entire device. So, not exactly quantum computing, but kind of quantum computing.

### Reply 14:
well 10nm bleed/leak at the moment due small walls so to speak.7nm will be worse.intel's 14nm cpus overheat and fail more then the previous generationso asic mining will not be doing 7nm anytime soon.no one knows how good the 14-16 nm are yet.no less the 10nm then the 7nmwe had 28nm from bitmantech twice the s-5 then the s-7 .So s-5 release was Nov 2014S-9 release was June 2016 that is 19 monthssame clock would be Jan 2018 for the 10nmsame clock would be Sept 2019 for the 7nmSo For now I worry about the s-9's coming to me on tues the 14th of june

### Reply 15:
If ya read the entire article and the link to the more detailed Ars Technica <link> one you will find that they are not using just Si.""Creating a working 7nm chip required moving past pure silicon, IBM revealed. IBMworking with GlobalFoundries, Samsung, SUNY Polytechnic Institute, and otherscarved the transistor channels out of silicon-germanium (SiGe) alloy in order to improve electron mobility at such a small scale. Intel has also said 10nm will be the last gasp for pure silicon chips.""Along those (Intel) lines, from the same Ars Technica article, "" Earlier this week, a leaked document claimed that Intel was facing difficulties at 10nm and that Cannonlake (due in 2016/2017) had been put on hold. In theory, 7nm should roll around in 2017/2018, but we wouldn't be surprised if it misses that target by some margin.""

### Reply 16:
they all ready have someone in the bitfury post about chips posted a paper on it and the tools are there it won't be long, I guess long is a mater of terms or how one see time.or above my post he posted it ,

### Reply 17:
Yeah I read intel had 10nm issues big time.Frankly the i5 6600k with 14nm was my first ever intel cpu to fail .. I did a bit of research and it seems to have overheating issue more so then prior generations.My gut feeling is 14/16 nm will be around longer then prior chips.and that we may stop at 10nm not 7nm .or skip 10nm altogether and jump to 7nm as the alloy will be b<rest of thread truncated>
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16499,"Date: 2023-04
Topic: Will the Minning bill passed by Missouri be impactful?
### Original post:
I see joy amongst some users in different cryptocurrency communities who think that the bill passed by Missouri Government to protect minners would impact on the market to get bullish. Aside New York that purged out crypto mining activities, is it necessary to fight for a bill as Satoshi act fund did? As people can still mine in other states without being noticed or penalized until they're asked to leave the state. The new bill was voted 12-0 in favor of bitcoin and miners can pay equivalent amount of money that other companies pay on Electricity bills, which is an advantage to the miners. But, I'm curious about why all the Government officials supported this bill; 12:0. Are they getting interested in mining activities?<link>

### Reply 1:
As precedent for other states maybe, but in the US the federal law is the bigger problem and this is state level.(see weed federal vs local laws)

### Reply 2:
Short Version: Probably not.Longer Version: If you don't have competitive rates and other things then 'protecting' miners against getting gouged is irreverent. Missouri electric rates are good but not great. There are states that have cheaper industrial power rates. And on top of that you have states like Texas that will take money out of it's citizens pockets to reimburse miners when they have to go offline and allow them to sell power back at a premium:<link> there are enough other things out there to lure miners to other states. -Dave

### Reply 3:
Nice read, didn't think about the possibility of offering such a service to the Government, the Riot blockchain still made themselves better profits on the long run even without mining with all the Electricity they possessed. Miners can find Texas a better dwelling place, especially when Electricity consumption is at its peak. Making more money aside Mining bitcoin, indeed its attractive. If the Missouri Government wants Miners in their state by offering same electricity rate, it could be they're concealing their intentions in a way of attracting more miners into the state, which will in return boost the Government's pocket through tax, electricity bill and others.

### Reply 4:
Or not.....<link> is going to be interesting if it passes, a lot of places moved to TX since they are giving them a good deal.If this passes and that goes away I can see them moving to more friendly states again.They moved there, they can just as easily move out when someplace else gives them a deal.-Dave

### Reply 5:
North Carolina County Mulls 1-Year Bitcoin Mining MoratoriumNorth Carolinas Buncombe County is considering a 1-year moratorium on new and existing Bitcoin mining operations in the area.The pause would give the county's Board of Commissioners time to develop standards and mitigation methods for intensive land uses that may pose detrimental harm to the natural environment, reads a county document first reported by local news outlet News 13 WSOL.The board will discuss and finalize the issue in a public hearing on May 2, 2023.

### Reply 6:
I was not certain where I should share this article, however, the good news on bitcoin mining in America continues in Arkansas. This new bill will protect miners from being attacked through the use of government regulations and be protected from discriminatory policies. The skeptical me thinks that some of the backers of these politicians might have invested in bitcoin already.A new bill aimed at regulating Bitcoin mining in Arkansas has been approved by both the House of Representatives and Senate and is now awaiting Governor Sarah Huckabee Sanders signature.The Arkansas Data Centers Act of 2023 seeks to establish guidelines for Bitcoin miners and protect them from discriminatory regulations and taxes, guaranteeing that firms have the same rights as data centers.Source <link>

### Reply 7:
The bill that will be introduced into the Missouri Legislature is also very simple, but one thing I'm sure he won't do is to get to the stage of the law enforcement on his behalf and to keep him out of it, so his bill could also be implemented in various states through the courts. It has been said in his tweet that he's got a good track record with bitcoin and some of them are also against it.

",[]
23147,"Date: 2019-12
Topic: EBANG E10.3 SOME ISSUES
### Original post:
Hi anybody.I have some ebang e10.3 farm that not work properly. when check with ebitminer mini software in work state column found that there are some problem.1- voltage leak2- hash lackingcan anybody give me any information about these and also solution.more over, in algorithm no column there are 4 active algorithm column but in some one them only three or two of them work and other shows 0 . do have any idea about that?I contact to ebang support skype but they did not answer me.Thanks so much for your help.

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11256,"Date: 2023-01
Topic: Gizmo Miner. 5v-9v Power Efficient. Solar Focused. Bitcoin miner.
### Original post:
Gizmo Miner. 5v-9v Power Efficient. Solar Focused. Bitcoin miner.GithubDiscord Have been watching as a guest on this forum for a very long time. Over a decade. Bitcointalk has been great resource for information and many times of entertainment. Always thought is was cool, how you never had to register to get information. My personality is very introverted. Took a lot to actually create an account and put myself out there. I remember a time in Bitoins past. It was not really safe to say hi I mine bitcoin for fear of being kidnapped for your seed phrase. Silk road was a thing in them days. Bitcoin had a stigma of criminality. At the time a lot of people did not want that stigma Bitcoin came with in their professional lives. Think that has always been my reasons for staying closeted bitcoin enthusiast. People fear what they do not understand. At that time very few actually understood it. Never really got out of that fear intel recently. I was just a huge nerd that loved the concept of Bitcoin. Loved just playing around with computers and gadgets.Seeing how it has become more mainstream and lost a lot of that stigmas. People wear Bitcoin t-shirts now. It was a huge risk at one time to <rest of post truncated>

",[]
23566,"Date: 2021-05
Topic: Problem with Antminer chip fixture test - Hashboard S9 Repair
### Original post:
I have been using a tester that I bought to find out which chips are faulty from the Hashboard S9. But it turns out that the controller was damaged. The controller is from a V9 machine, I have a replacement but when I put the SD card to do the test I get no results. I would like to know if I have to do something else, Flash it?If someone also knows how to repair the controller it would be helpfulIf someone can tell me if it is possible to repair a Hashboard without the need for that tester but using another method, I would also appreciate itIf someone has knowledge of Hashboard repair and is willing to offer a course, paid or free, I'm also interested. Since I have not managed to repair a Hashboard even following the manua

### Reply 1:
If you follow the method from Bitmain ""How to set up V9 V1.0 test jig manual for S9, S9i, S9j, R4, DR3, T9, Z9, Z9 mini"" But the problem still occurs try the firmware from ZeusBTC you can download the firmware from this link below.- Test Fixture TF Card FileIf still not, maybe your v9 controller is faulty.

### Reply 2:
Go to Zuesbtc.com to find their WhatsApp number and send them a message there, they will likely guide you on how to restore the fixture tool, but I don't think the board needs flashing as it doesn't even boot from the NAND with the sdcard in place the and jumpers are changed (which you need to check as well).

### Reply 3:
Been along time since I did any repairs but should still be similar to the the S7 if the device is booting and running then its unlikely its a controller. If its bad chips on the haphazard there usually easy to spot especially if there under there own heat sinks like the older miners as when you mine the chips usually stay cold or very hot so just work along the rows with a thermometer or by touching the heat sink. Controllers from bitmain are a bit trickier last time I checked each one needs flash e.g a S7 needs to refresh to an S6 for it to work properly or detect the board.How it helps ill have a poke around the net see if its still the same

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11838,"Date: 2012-03
Topic: Best amd driver and sdk + miner combo for windows 7 with 5970's?
### Original post:
searched a bunch of threads, but saw mixed reviews.

### Reply 1:
From what I've been told SDK2.1. As for which version of Catalyst, that can vary a bit I guess.I seem to be fine with 12.1 but maybe that's what's causing my weird hashing issues after installing my 2nd 5970.

### Reply 2:
Driver doesn't really matter. I would use 11.12 for solved 100% bug. I have found 12.1 doesn't like multiple 5970s. It would hard lock trying to install drivers w/ 4x5970s installed. It might just be me but it doesn't seem to like my setup.For SDK 2.6 = horrible performance. 2.4 & 2.5 are roughly the same. 2.1 is slightly (maybe 1% to 2%) better performance. 2.1 use to be much better but improved kernels have closed the gap when using 2.4 or 2.5. Avoid 2.6 like the plague unless you like 20% less hashes for same hardware and power. This is when using a low memclock (160 Mhz to 260 Mhz). It may be different at higher memclock.

### Reply 3:
DiabloMiner now gets the same speed from SDK 2.6 as it got from SDK 2.1.No need to stick with an old SDK.

### Reply 4:
..at high memory clocks. high memory = more power = less net profit.Also my 2.1 setup still has like 0.5% lead on 2.6. I see no reason to ""upgrade"" to the downgrade.

### Reply 5:
+1. memclock @ 240 vs memclock @ 1000 saves about 40W. I have 16 5970s running. Don't really see the point in burning almost 700W extra just to get ""almost as good"" performance. Maybe if/when a future SDK shows INCREASED performance at the same wattage I would consider it an upgrade.

### Reply 6:
Ok, sorry, did not know about that memclock thing...

### Reply 7:
That's really not true. I have memclock @ 200 and hashes are faster if you make proper changes to the miner. However, if you're using an outdated miner then sure it will act like thatAlso, how do the driver not matter? It includes an updated runtime

### Reply 8:
If you're on SDK 2.6 with the current cgminer, you can use -k diablo for good performance. Though it still isn't any *better* than 2.1 with the default phatk kernel that cgminer uses.

### Reply 9:
You just answered your own question.Just because AMD bundled the runtime & driver together doesn't make them the same thing.I run 11.12 w/ SDK 2.1. Driver =/= runtime.Driver doesn't affect OpenCL efficiency.

### Reply 10:
Everyone with high power costs hates overlocking. Personally every hash I can squeeze out of the cards just means more profits for me. 11.11 driver works well, if 11.12 you need to delete the following files after uninstalling 11.12 to downgrade. <truncated> run all 18 of my 5970's at 1.100v870 clocks500 memorysome cards require 1.112 volts or 850 clock.

### Reply 11:
Those memory clocks are exceeedingly high. 300-380 is the optimum range for 256 worksize. 128 worksize is about half that (150-190) but has slightly less hashes than 256 worksize.

### Reply 12:
Best for Windows 7 and <truncated> 12.1 + APP SDK 2.5 + cgminerExample for stock 5970:cgminer [-I 8 -g 1 -w 256 --gpu-engine 725 --gpu-memclock 300 --submit-stale]CPU load 0%GPU ~661Mh/sminimum rejects

### Reply 13:
I agree memory clocks are high but w/ 256 worksize you can go much lower than 300. Actually 300 is a suboptimal number.I run 242 but looking at cgminer thread looks like same hashrate can be obtained at <200.

### Reply 14:
I was being rhetorical... thanks. Runtime can expose new features of sdk so it can affect efficiency

### Reply 15:
Which once again ISN'T THE DRIVER. Driver =/= runtime. So yes runtime/SDK can affect performance. Nobody has said otherwise. The driver though isn't the runtime.

### Reply 16:
Runtime is included with driver... why are you trying to argue they're not the same when I never said that. All I was pointing out is the runtime can affect efficiency. Is it not already obvious it's not the same lol

### Reply 17:
I had already pointed out that runtime/SDK affects efficiency but the driver doesn't and then you postedSo going back full circle .. simple because the driver isn't the runtime and despite them being bundled together in the same package (and no the driver doesn't include the runtime AMD includes BOTH which are seperate installers in the same download) doesn't make the driver magically affect efficiency.

### Reply 18:
Okay so as you said before ""driver doesn't matter"" because it's ""not the same"" even if there are newer runtimes bundled they don't matter. It's apparently unthinkable someone can install whatever part is bundled with it. That was very helpful advice.You do realize the 2.6 sdk doesn't have latest runtime right? Nevermind drivers don't matter

### Reply 19:
Your finally getting it. It only took you 5 posts (and you really didn't get it just decided to be sarcastic) but I give you a C for effort.runtime =/= driver.I can install 11.1 driver and SDK 2.1 and then upgrade the DRIVER (not the runtime) to 11.12 or 12.1 without any change in performance.<rest of thread truncated>
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  },
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    ""hardware_name"": ""2nd 5970"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""4x5970s"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""16 5970s"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""18 of my 5970's"",
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11245,"Date: 2022-12
Topic: BITMAN T15 with APW7 2000W
### Original post:
Hi, my Bitman T15 has a dead power supply. The machine works great. Can I fit a 2000w apw7 type power supply to it? buy Apw8 power supply is not cheap .thank you

### Reply 1:
only apw8 will workthis seller link has them<link> is USA based. I buy from him. In fact I have purchased these from him a few times. He is trustworthy and for this part he may take a visa cc

","[
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    ""hardware_name"": ""2000w apw7 type power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Apw8 power supply"",
    ""hardware_is_owned"": false
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]"
23536,"Date: 2021-04
Topic: S9 still not working after swapping out faulty control board
### Original post:
<truncated> get fan[5] <truncated> get fan[5] <truncated> waiting fans become <truncated> waiting fans become <truncated> waiting fans become <truncated> waiting fans become <truncated> waiting fans become <truncated> waiting fans become <truncated> get fan[5] speed=5280Could be wrong but it looks like it's only seeing 1 fan. IIRC there should be 2 fan numbers showing. not just get fan [5] there should be a get fan [4] or get fan [6].I actually thought it was a lower number.Don't have any S9 units online at the moment that I can check, but if you have others see what they have showing for fans.-Dave

### Reply 1:
Ok thanks for the tip, I'll see what my other S9s say in the log. This is so frustrating overall.

### Reply 2:
My other S9 kernel logs look completely different than that one, so I'm really not sure

### Reply 3:
it is a fan issue you should show 2 fans not one.now the controller could be bad and no0t able to read a running fan.this is easy to test carefully detach 1 fan see if the remaining fan is moving and of course check the logs.if the fan moves and the logs say fan 5 is 5200 speed.shut off.detach that fanreattach the other fan to where it was.if the fan moves and you get no readings the controller can not read the fan. could be the fan has a bad rpm wire or the controller has a bad sensor

### Reply 4:
Ok great guys, thank you so much for your help! I will test it out with some fans and see what the problem is.

### Reply 5:
It's usually 5 and 4Code:get fan[4] speed=4560get fan[4] speed=4560get fan[5] speed=6120get fan[4] speed=4560get fan[5] speed=6120get fan[4] speed=4560get fan[5] speed=6120OP has a problem with fan 5 which is usually the exhaust fan by default but should be tracked easily to know which fan is bad.

### Reply 6:
so after trying a couple of different fans and reading the logs, you guys were 100% right, it was faulty fans - 2 of them to be exact. Luckily I had a spare L3 that wasn't working, so I used the fans from that rig and it seems to be working fine now with get 4 and get 5 - two fans operating and it began to hash. So thank you guys not only for solving the issue, but for teaching me a bit about how to read the logs!

### Reply 7:
Hey everyone, I bought a new control board for an S9 13.5th that wasn't working. I tested each hash board with another control board to make sure they worked. Each hashboard works on another control board. I plugged a new control board that works into the rig, and the rig still isn't working. I tried another PSU too. Still nothing.The machine boots up, and green lights on the control board, but it still gives me 0 hash. And I am just lost here at this point.I do have the kernel log. Does anyone know why this particular rig won't work? I've gotten others to work with similar issues. This is the only one, and it's driving me nuts Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0<rest of post truncated>

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4196,"Date: 2012-10
Topic: ASIC mining -- is my math right?
### Original post:
First time miner here, looking to get some BFL ASIC's soon and doing some calculations on expected returns.Using: <link> 5 BF SC Singles: ~$6k for 300 Gh/sPower consumption: 1W/Gh @ 300Gh = 300WElectricity cost: $0.10/kWAND assuming price remains same (worst case scenario, as I'm pretty bullish), block halving, and 10x difficulty (again, extreme scenario):Total Hash Rate:300000 MH/sAverage time to find one block: 4.75 daysAverage daily revenue (pre-halving): 10.53539662 BTC ($130.98)Average daily revenue (post-halving): ~5.26 BTC ($65.50)Average daily <truncated> 0.00000000 BTC ($0.00)Average daily electricity cost: $0.65 (0.05212355 BTC)Average daily profit pre-halving: 10.48327307 BTC ($130.33)Average daily profit post-halving: ~5.21 BTC ($64.85)Are those electricity costs really that low? I always hear miners complaining about electricity costs but really these seem pretty negligible.

### Reply 1:
You forgot to factor in block halving pretty soon and at a minimum, double the difficulty.

### Reply 2:
These allows you to configure the reward:<link>

### Reply 3:
I did factor in block halving and I increased difficulty ten fold.

### Reply 4:
The efficiency is a couple orders of magnitudes greater with ASICs, not a single order of magnitude, so you should predict the network hash rate will increase 25- to 100-fold.Hence average daily profit post-halving I would wager to be close to 0.521 to 2.084 BTC a day within a month of ASICs coming onto the scene.

### Reply 5:
Hrmm. I thought I saw a couple of threads where people predicted 5-10x based on present statistics for ASIC preorders, even if their efficiency is 40x last generation. Slow transition perhaps.

### Reply 6:
My most conservative estimates are 20x (and that's just based on BFL) it's looking more and more likely that by first quarter 2013, we'll see 40x difficulty - assuming that other producers ship on time.

### Reply 7:
IMHOYeah Hash power should be 5x-15x for the next few months but If I was to predict long term hash rates (1-2 years maybe that's the medium term) I'd look at the MHs/$ rate.With GPU it was arguably 1.7(my own rate) the ASICs are about 5050/1.7 = ~x30 I think people will buy hardware until it stabilizes at that rate... maybe block halfing will keep it closer to half that (x15), but BTC price increases may bring it up...Dollars in to dollars out I think the ROI will settle in at 10 +/-2 months so long as there are no new quantum leaps in technology again.40% mining margin is palatable given the speculative nature of bitcoins...It's a bit sobering... as much as I would love to get a loan for $30,000 and make ~$20,000 in revenue every month...

### Reply 8:
I would say that is not an extreme scenario IF JUST BFL ONLY meet their target speeds of 1.5 TH/s in the SC mini rig. More like 50 to 100x difficulty could happen before things calm down.Keep in mind you can't be certain WHEN you will receive your order so that could dampen your profitability time frame.

### Reply 9:
A 50x in difficulty means that network power will be of 1000THash, so more than 600 SC Rig. But all the preorders of BFL and Avalon are only in the 80THash range. Even if they sell 5 times that power in mini rig in few months we arrive at 20x in difficulty (and other 8 milion of $ invested in rigs). To reach your 100x with the SC mini rig we need an investment from miners of 40 milion of dollars. Even considering an halving of the prices we still need 20 milion $ (near 2$ for every bitcoin currently circulating).I think that a 50x in difficulty is not probable before at least 8-10 months after the delivery of the first batch of ASIC.

### Reply 10:
I will take bets on that.Its rather simple, if we are over estimating the amount of ASICs preordered, then these devices will be insanely profitable when they do arrive, which will spur more sales until they no longer are. Once sales dry up, what do you think BFL will do? They will lower their prices and it starts all over. And again, and again. IN the end asic's will be priced close to marginal cost, which at least for the chip itself, is negligible (literally a few dollar per chip). It will take a while to get there, mostly due to manufacturing delay, but if you are counting on that to guarantee your profitability, it seems like a very dangerous gamble. BFL is no longer a tiny startup, IIRC they are employing 22 people now and they have the funds to outsource anything they want. They would be crazy not to buy external manufacturing capability for a device with an initial marginal profit of something like 100000%.Also keep in mind BFL isnt the only player, by early next year there will most likely be 5 asic vendors competing (BFL, bASIC, asicminer, Nzhang, Deepbit...).Buying an asic seems like an excellent bet if you know you will get yours early so you can recover your cost in at<rest of post truncated>

### Reply 11:
Sorry I never bet unless I'm<rest of thread truncated>
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22174,"Date: 2018-01
Topic: Insulated venting size?
### Original post:
Hey all.I will have 3 S9 miners, and I plan on venting them all into 1 outlet, stepping from 4"" adapters to Wye adapters and ultimately to the same pipe using an inline fan to aid in suction then and out the basement window. Is 8"" ducting sufficient or do I need 10"" ? Will I have too much of a bottleneck going from the 4"" to each adapter?

### Reply 1:
I would run a larger duct on the outlet of the miner. My S7 only increases slightly in temp with a 4"" adapter, but my S9s went up a lot when I tried to use that size duct. I am having a buddy 3D print some 6"" exhaust outlets (for me this is all temporary until my proper setup is finished). As for the other duct sizing I believe you can find some HVAC calculators out there to help. Each S9 puts out roughly 225 CFM of air and any kind of restriction raises the chip temp quick.

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23072,"Date: 2019-09
Topic: Asicminer 8 Nano by Asicminer company can't mine properly without website login
### Original post:
It was a scam. You are lucky you get the 12 th.Looks good with red fans lights etc. but does not do the 44th.

### Reply 1:
Hi guys, looking for somebody who may have more knowledge about this than I have. I am summoning the mining wizards here on this one!Its this miner I have repaired the hardware is a Asicminer 8 Nano 44th/s model by Asicminer Company (Asicminer.co is website in China) that has no sticker on the door with the login credentials. My problem is that it only displays 12-13 th/s on the mining pool even though the local dashboard on the miner is reporting roughly 42 th/s (thru the HTTP login) using admin for user and admin for <truncated> I guess you have to have a login screen with the website to properly control the miner and the company will not give me one.They ask me to send it to them and install in their ""farm"". That's not the option I was looking for so I wonder if anybody can help get this thing to mine properly, and software/firmware guy or something like that.The person I bought the miner thru Ebay they said they didn't have the login either, but it was only sold for parts and I never expected to repair it and get it up and mining. Suggestions anybody?Currently I mine with it and it makes a bit over 3 dollars a day in BTC but the electricity is over 5 dollars a day! About to tur<rest of post truncated>

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22727,"Date: 2018-08
Topic: Canaan 821 to 841 firmware swap
### Original post:
Iv'e searched around and have not found an answer. Since the 821's and 841's use the same hardware, is it possible for load the 841's firmware on the 821?

### Reply 1:
Short answer no. The 821 will not like being told it is an 841; not even sure if it would load properly.Are you trying to get more power out of your 821? Best bet is to play around with your voltage settings to see if you can squeeze a little more out of it.

### Reply 2:
it was a thought, i have 2-821's that I am going to start back up. I'll just mess with the settings like you said. Depending on how bored I get, i might see about compiling my own firmware.Thanks.

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11910,"Date: 2012-05
Topic: What miner do you use?
### Original post:
Im using poclbm. Thinking about trying something else. Any suggestions?

### Reply 1:
There's lots of them. Diablo D3's miner, cgminer et cetera.

### Reply 2:
cgminer - everything is automated

### Reply 3:
cgminer. no reason to use anything else.IF you want you can use cgminer w/ the poclbm kernel (or any other kernel) by using -k command line argument or ""kernel"" config file parameter.

### Reply 4:
Awesome, thanks for the tip guys. I will check out CGminer.

### Reply 5:
If you're using a 79xx card, I recommend DiabloMiner. I get roughly 3% increase over CGMiner.

### Reply 6:
cgminer has diablo kernel available. -k diablo

### Reply 7:
You're right. I had a brainfart there.

### Reply 8:
I prefer CGMINER, too ... it's written in plain C and that makes it small and fast. Tried DiabloMiner, but I really dislike the fact it needs a Java runtime (a great plus is it's advanced kernel). Another miner, which I think need's to be mentioned is Phoenix, that's one I'm fine with, too.By the way, did anyone try CGMINER on a 79XX with -k diakgcn -v 2 -w 256? I would like to know how far I'm behind or if there are cases, where my kernel is competitive.Dia

### Reply 9:
I like cgminer, but I prefer everyone else to be using <truncated> 1 please)

### Reply 10:
Cgminer, with this version of Anubis to monitor the entire farm. Thread for Anubis here. Someone else took over Anubis and made their own git (hence the first link). It is incredibly awesome for managing several machines at once.

### Reply 11:
Dia,I am getting ~671 Mh/s with your kernel vs. ~688 Mh/s with Diablo's.7970 @ 1150/1375

### Reply 12:
So i finally decided to try CGminer. I did read the sticky but im kinda nub when it comes to setup. I created a text file and saved as .bat. I put these commands in but no luck. I know im forgetting something but im not sure what that is. Help me out?cgminer -o <link> -u XXXX -p XXXX

### Reply 13:
Phoenix, works best for me. CGMiner is a bad choice, really bad choice, and I explain why. My Radeon 6870's mem clocks set to 300 mhz, and CGMiner .... just guess what its doing with clocks when I run it. Plus, it's phat kernel is less effective than phatk2. When these MAJOR issues will be fixed, yep, it will be the best, but so far - nope, thanks.

### Reply 14:
cgminer doesn't change any GPU setting unless you tell it to. Kinda like saying my car sucks because it keeps slowing down when I engage the parking break.

### Reply 15:
The thing is that I want it to change and control my gpu in case of overheating, to let it shut the gpu down.

### Reply 16:
I use phoenix 2 beta, gives me most mhash out of all the available windows options on my 58xx cards.

### Reply 17:
I'm no professional, but it seems you forgot which port to use.It should be cgminer -0 <link> -u XXX -p XXX

### Reply 18:
Phoenix on linux, guiminer on windows.I am too lazy to switch.

### Reply 19:
I need some help guys. When i click the cgminer exe and enter my url user and password it starts mining. When i click on the settings.bat file i created the box pops up and then disappears. I did add :port8332 to the url. I hear entering your info every time is the hard way and using settings.bat file is the old way. So im kinda wondering, which is the new easy way?

### Reply 20:
config file.I assume you are on windows.1) Open command line. 2) Start cgminer w/ minimal parameters. something like:Code:cgminer -o (url:port) -u (username) -p (password)3) once cgminer launches press S (for settings, and then C (for config file). You can leave filename blank and press [ENTER].4) You now have a file named cgminer.conf in the cgminer folder. 5) Modify that file to modify any parameters you want (backup pools, clocks, fan speed, temps, etc) and save.6) In the future to start cgminer just double click cgminer (it loads cgminer.conf by default if one is present in the same folder).You can also write a config file by hand (there is an example in example.conf) but steps 1 to 4 are <truncated> the generated config file may have invalid entries. <truncated> : 0.000that line is trying to set voltage to 0 volts. Obviously not going to work. If you want to set acustom voltage you can change the line otherwise just delete it.

### Reply 21:
OK i will try again later tonight - TY.

### Reply 22:
I finally had time to play with cgminer. My 5830 hash went from 272K with poclbm to 320K with cgminer. I created a config file and noticed a bunch of commands. How many of these tags are necessary? I would like to start with as few as possible and add more as i go. What here can i get rid of? Any other useful tags i should know about? I heard there is one that will restart a gpu after it fails. That would be nice to have in my config file. I also noticed the OC tags. I have been OC with trixx and would like to use cgminer instead. For gpu engine and memclock why is it a bunch of 0's? Im running at 1050/300. Sorry for nub questions<rest of thread truncated>
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11326,"Date: 2023-07
Topic: Imersion cooling project
### Original post:
Hello,recently ordered a complete immersion cooling system from DCX <link> and waiting for delivery.my plan is to fit 8 T17+ in there and upgrade their firmware to the max,guys from DCX explained to me how to prep the ASICs for the immersionand the firmware upgrades I am thinking are mskminer.com or Asic.to as this is a first for mewould like to learn from people with experience on the subject tips on prepping the machines to be immersed and of course best or better firmware upgrades for immersed T17smany thanks in advance

### Reply 1:
Just received the kit and will start putting it together with 8 T17+ inside.

### Reply 2:
Cool topic, can you share some photos and a DIY story if you are finish.How much cost your setup if you are finish and your Asic Miner are Running?Best regards Willi

### Reply 3:
Op, i would chose vnish (awesome miner) as that lets you use the monitoring software without extra cost, since you will be overclocking the miners, you need something like that.Also, be careful with the PSU rating, some profiles on those custom firmware require a custom PSU, the solder on those gears is bad so make sure the fluid you use is of a very high quality.Like willi i am also interested.

### Reply 4:
At the moment received and unboxed the kit and working on removing fans and covers from the machines dont really know how to properly post pictures here

### Reply 5:
Cost me around 7k Euro from DCX <link> , would love to share some pictures, thing is tried but don't know how to this heremy plan is to use some beaten T17 that I have to experiment, trial and error and if everything works out ok switch to S19s

### Reply 6:
Mikey Would like to know more about vnish, was thinking to overclock using asic.to my plan is to take them all apart and wash everything really good with iso propylic alcohol before put them in the liquid

### Reply 7:
Asic.to is vnish too, see vnish has many distributions, they all are the same, the difference is what you get from using one of the different versions, asic.to has a great own support for the firmware, AwesomeMiner lets you pay the monitoring fees using those built-in firmware fees so you don't have to spend more on monitoring license. So all in all, it all depends on what would you need the most out of these ""extra features"", but Vnish as a whole is a lot better than mskminer IMO.as for uploading images, use something like <link> and post the link here.

### Reply 8:
awesome! will look more into vnish thanks for the advice<link> is a link of one of my current farms set-up and trial for image upload, this is the typical set-up i use at the moment and works really goodsome s19pro lt5 and t17+ there, will take some of the t17+s from there to put in immersion and upgrade to s19,if i am happy with imersion system will expand and use better asics for the jobthanks for the info!!

### Reply 9:
Nice video. How many units on each pipe?Those pieces of gear push around 500 cfm each.the feed to the main pipe looks to be big enough.I am trying to figure if the main pipe is big enough.I am also looking to see if the main pipe has a pull fan on it.I would think the big pipe can handle 4 to 6 units of gear max.more charts<link>

### Reply 10:
is 6 units each pipe with 250mm pipes and each line with separate exhausts not connected to each otherfarm at basement and exhausts at ground level and current set-up moves nicely all the air needed as hot air moves upwhen I first build this was thinking maybe use some type of extraction fan at the end of each pipe but was not needed as it works just fine as it isalso machines run cool all year round (and I live in a climate with hot summers)

### Reply 11:
Very cool (pun intended). I looked into immersion cooling a few years back but the solutions that were available were in the 6 figure price range. Seeing these units at what I consider to be an affordable price point makes me happy. I'm looking forward to hearing your experience as I would consider using something like this in my garage if it were possible, which it sounds like it is. Having some GPUs in there with some ASICs would be a pretty awesome at home setup. I've been hesitant to go this route as I worry it is what I don't know that will cause me problems, so I'm looking forward to learning more from you about the entire process from ordering, to setup, to maintaining everything. Good luck!

### Reply 12:
Interesting setup with the pipes.Are the pipes only for push the heat out or do you use it for heating your house or what ever.Love that kind of topicBest regards from Germany Willi

### Reply 13:
At the moment pipes only move air out but of course could be used for heating house also I guess

### Reply 14:
today i decided to prepare some of the potential asics to be immersed,so i took everything apart and cleaned throughout with isopropylic alcohol...<link> after i put all different parts on different piles i discovered f<rest of thread truncated>
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13512,"Date: 2016-07
Topic: Mining Software compatible to Windows XP 32bit?
### Original post:
Anyone know a mining software compatible to Windows Xp? Or anyone here who knows how to mine with Windows Xp? I can't seem to run MinerGate or NiceHash

### Reply 1:
Update your pc to win 7. I think you probably could, anything with pentium 4 and up can go to win 7. Then get minergate.

### Reply 2:
Oh It's really based on the operating system. Thank You

### Reply 3:
CGMIner works with WinXP. But XP has a limit to 12 or 13 USB ASIC mining devices.

### Reply 4:
Thank You Ill keep that in Mind.

### Reply 5:
It's about running a 64 bit OS in many cases - Ethereum in particular REQUIRES a 64 bit OS to mine on.XP works for ASIC USB-based miners, but those aren't very efficient and the miner software tends to crash out a lot, IME.You CAN ""mine"" FoldCoin with XP - via running FAH.

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9951,"Date: 2016-08
Topic: Antminer S7 is working perfect on BeagleBone Rev. C
### Original post:
Antminer S7 working perfect on BeagleBone Rev. C ARM Cortex A8what you need is this<link> this:<link> a SD-Image for running firmware

### Reply 1:
All Antminers S7 working perfect with any B.B.B. from S5 antminer. And S5 miners can buy a lot cheaper than your toy.We need controller for S9 , S7 is history.

### Reply 2:
Just got my 2 new s9 batch 11's: Looks like Bitmain has dropped using a BB per-se. Ref my post <link> However, if one has some of the original s7/s9 IO boards around then of course would still be nice to be able to 2nd source BB's for them

","[
  {
    ""hardware_name"": ""Antminer S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BeagleBone Rev. C"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminers S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S5 antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9 batch 11"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""original s7/s9 IO boards"",
    ""hardware_is_owned"": true
  }
]"
22375,"Date: 2018-02
Topic: Antminer s9 router ping
### Original post:
Hello i have Antminer s9 working well with my box internet but when connect to router i can connect in antminer but antminer not ping and not connect to pool.

","[
  {
    ""hardware_name"": ""Antminer s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""box internet"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  }
]"
21156,"Date: 2016-10
Topic: Minera Ant miner U3 (((SOLVED)))
### Original post:
So I'm trying to get the most out of my 2 Antminer U3so I go to Minera then settings then local miner then Select your preferred miner software so I have selected BFgminer and under that I have preconfigured options I don't know which one to select griedseed or zeus or I could even choose custom miner.Hope someone can help

","[
  {
    ""hardware_name"": ""Antminer U3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Minera"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BFgminer"",
    ""hardware_is_owned"": false
  }
]"
15797,"Date: 2016-08
Topic: Open air aluminium frames? Point the way please
### Original post:
Hi guys,Can someone point me in the direction of the guy that was making and selling aluminium open air frames for GPU's please. Ive tried searching but cant find the one im looking for. THe guy made them himself not bought in by openrigs etc etc.Thanks.

### Reply 1:
i'm selling themfinal design will be with a better placement for the psu, you see it can be secure now with vertical bar, i'm planning to move those horizontal, screwed to another alluminium bar that need to be addedmy final price is 70-80 euro + shipping for international

### Reply 2:
I believe the person you're referring to is Spotswood (link to his website). It looks like he's active on the forums and still building GPU miner frames, so if you're interested in purchasing ones it'd probably be worthwhile to send him a PM.

### Reply 3:
Thanks for the replies guys. I'm not necessarily looking for a GPU rig but more some sort of frame work to house a small watercooling setup for a couple of gekko USB miners (I know it's overkill but it would be a fun project). I was hoping to pick someone's brains about materials to use where's a good place to buy them (in the UK) etc etc.

","[
  {
    ""hardware_name"": ""aluminium open air frames for GPU's"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU miner frames"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gekko USB miners"",
    ""hardware_is_owned"": true
  }
]"
23421,"Date: 2021-02
Topic: S17 Pro Help, Miners Keep Restarting
### Original post:
Hello,I am new here and am lost so hopefully someone can help or point me in the right direction.i have 192 s17 pro's running in total immersion, with awesome miner firmware. All of a sudden 3 days ago 6 of them all came down with the exact same problem. They will start up running 144/144 chips hash perfectly for 3-5 minutes, then hashing power goes down for a minute then restarts. it will do it indefinitely if i allow it. currently i have them shut off to protect the miners. I am posting the kernel log and the miner log as well and well answer any questions you may have I am <truncated> Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15<rest of post truncated>

### Reply 1:
So now I'm more confident that your issue is the control board. I had this exact problem on a S17 a few months ago, the same one that gave me the ""Malformed power response"" error. I eventually had to replace the control board to get it to work reliably. My suggestion is to try doing a factory reset and reflashing the firmware, then try a known good control board, and if that doesn't work try a known good PSU.

### Reply 2:
I will get on that now, and keep you updated.

### Reply 3:
I'd firstly try unplugging them and letting them ""rest"" for a few minutes and the turning them on again.If I see right, you are using Vnish (Asic.to) firmware, which should by default restart it whenever it fails to boot or encounters a problem during mining, you can disable some of those ""features"" in options if you want to mine without interrupts with few of those hashboards that work fine.Although, I would check the PSUs. They are ""easy"" to replace especially if you have that many units, you can take one from 100% working one and try it on problematic ones.But do keep in mind that transferring PSU from one unit to another takes 15-20min.

### Reply 4:
Just to keep things updated, the problem seems to be a laptop that was causing a conflict with these 6 miners. Took the laptop offline and it has been perfect for 48 hours. What was causing the conflict I am not sure yet! I changed IP addresses and moved their locations in the mine. By chance this laptop came on at the right time and it started happening. It was luck to catch it like that, now to find out why.

### Reply 5:
I am not sure how could that be a problem. Were you using too much bandwidth on your laptop so some machines were dropping hash on dev fee and then they would restart? Or did your laptop just idle?

### Reply 6:
Yeah, also can't think of any way for a device on the network would do that, especially only to some of the miners. Do the miners go down when you turn the laptop back on?

### Reply 7:
Just the laptop getting on the network would cause the problems. it wasn't using any bandwidth, it just logged on. It is the craziest thing and haven't had a problem since.yes they do. Also no problems when the lap[top is off the network. It has been running smooth ever since 5-6 days now.

### Reply 8:
Query: Are the miners and laptop using DHCP or static IP addresses? If they are static addresses perhaps the laptop is using the same address as your router or a miner and causing a conflict somewhere.

### Reply 9:
This is a good point but based on this theory and regardless of his set-up the worst result that would come out of an IP conflict would be 1 miner going offline, also if the laptop was using the gateway address as its own IP it can't possibly affect the router the way OP describes.It's most likely thisIf it's logged in then it's connected to the network, and thus is using bandwidth, I would refrain from using the word bandwidth to clear a lot of confusion, and let's call it ""traffic"", there is an on-going connection between the laptop and the router as long as they are connected, even if it was sitting there doing nothing, also, it could be doing something in the background such as windows/antivirus update, unless you closely monitor the router's inbound and outbound traffic you can't tell.With that being said, if your laptop caused that then it's very likely that either your router or internet speed is pretty must at a critical level, so the slightest extra traffic will again cause the same issue, you might want to get a proper router and perbaps a better internet connection, you can't tell where the problem actualy is unless you troubelshoot it.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  }
]"
22809,"Date: 2018-11
Topic: [SOLVED]Avalon 741 Problems
### Original post:
Does anyone know why I would be getting a much lower than advertised hash rate from the Avalon miner?I am getting 4.5 TH/s according to Slushpools dashboard as oppose to the 7.5 TH/s that was advertised when purchasing the unit. Is this normal?

### Reply 1:
Hey Men.. can you help me with my avalon 741? I dont know what to do. Coz my auc3 converter Just green light on and the blue light is off.. so is not mining

### Reply 2:
Recently I bought an Avalon 741 and I am having trouble getting the setup done correctly. The information sheet that comes with the unit is not the most descriptive thing I have ever seen.Presently I have a HP power supply connected to the unit and it powers up (from the sound of things it appears to be okay)I have 4 green lights by the power pins on the back of the unit (2 on each side)1 Green light on the unit above the power pins which apparently means the unit is idle.I have a green and blue light on the usb convertor.The problem I am having is that either the usb controller is not communicating with the miner or the controller is not communicating with the mining pool.On the controllers web interface I have configured the network settings to be like all the other devices (not miners) on my network but with a static IP. Also on the dashboard the Modules Information section is showing 0 alive modules and -- for temperature and fan.The pool I am trying to connect with is slushpool: <truncated> anyone have any ideas where I may have gone wrong with this?EDIT:In the end it turned out a firmware update was needed for the controller, this stopped all of the very odd problems from hap<rest of post truncated>

### Reply 3:
hello,can anyone help. ive changed my laptop adaptor settings to be:192.168.0.99and then plugged the controller directly into my raspberry pi 3 b+ but i cant even get the led's to come on, on the rasp. pi. obviously i've flashed the firmware image to an Micro SD <truncated> i still cant connect.i know the rasp. pi is good and working because to test it i installed noobs and checked all functionalityany ideas?zaclooks like i found my answer here.<link> raspberry pi 3 B+ is not compaitble with the firmware.i have now ordered a raspberry pi 3 Bzac

### Reply 4:
Yep, I have not yet found a firmware which would be compatible with the Rasp Pi 3B+.

","[
  {
    ""hardware_name"": ""Avalon miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""auc3 converter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 741"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HP power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb convertor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop adaptor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""raspberry pi 3 b+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""raspberry pi 3 B"",
    ""hardware_is_owned"": true
  }
]"
23931,"Date: 2022-04
Topic: T9+ not working
### Original post:
Hello everyone I just bought an asic T9+ after configuring it the hashrate remained frozen at 0 and the same for the pools could someone help me?thank you in advance for your answer ! <link> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. To<rest of post truncated>

### Reply 1:
Try to flash it through SD card you can follow the guide from this ""T9+ Control Board Program Recovery""Then upgrade it with the latest firmware available from this ""antminer t9+ firmware""If still do not work try to flash the hashboard with known working pic through Pickit 3You can follow the guide from this thread below.- <link>

### Reply 2:
There is no sign of any pic corruption in the kernel log, nor in the OP's brief explanation, I would leave such troubleshooting as last in almost all cases.OP, you don't say if the miner runs fine and then stops or it just doesn't run at all, I can't find anything in the kernel log, and thus I expect the miner to be running just fine at least at the time of the kernel capture.If it doesn't run at all, I would check the pool settings, if not, then please describe your problem in more detail so we can guide you.

### Reply 3:
Hello thanks all for your help i have resolve the problem ! It's come to the hashboard i have change it and now it's work perfectly

### Reply 4:
hichain 10 need to repair.only found 0 asic.

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    ""hardware_name"": ""asic T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Pickit 3"",
    ""hardware_is_owned"": false
  }
]"
15995,"Date: 2018-04
Topic: My 700 TH/s Bitcoin Farm,  LEH, J&K,INDIA
### Original post:
very nice, 80,000 a day so you are a millionaire ?

### Reply 1:
wow nice i really looking forward to pictures

### Reply 2:
Ahhhh what happened here? Was tbis advertising for a tp-link router? LolAnyways, yes congratulations on your completion of your farm. Im sure it took alot of hardware and money to finish this facility and securing the miners. Congratulations, we are all looking forward for updates or pictures of your farm. Will be great to see how mining is done in india.

### Reply 3:
It is great to know that India has almost free electricity. INR 0.5 is like USD 0.01 your electricity cost is the lowest that I heard so far. Will definitely wait for those picture

### Reply 4:
Is there any update on those pictures?

### Reply 5:
You guys are lucky to get cheap electricity... here in Maharashtra its a bit higher.However, what is the costing of your S9 Antminer?

### Reply 6:
It's in Indian Rupees. ($1240 USD/Day)

### Reply 7:
This is one of the most profitable project I ever seen. Low electricity cost is a plus, 0.007$/KWH is almost negligible.To be accurate, 640$ is the daily profit from your farm, (I used a Bitcoin mining profit calculator).I would like to see pics and to hear more about your experience.

### Reply 8:
Whoa! Great man, nice work. But it would be so great once you show up the picture. Im eager to see your mining farm. What was the excise duty that India government imposed on you, I heard that the GST thing is getting everything very costlier in the India. The import fees are more than 28% for any products that you bring into Indian borders. I mean dont you think that was very costly affair. The electricity seems to be very low and you can enjoy the free electrocyte to mine over million per day. I dont know those units but after conversion it looks near to million to me. Thats crazy investment with S9, and you got 10 of those. Thats cool man. Hoep you will share the data statistics here as well as some pictures of this cool mining rig.

### Reply 9:
Really great work guys. Its very good to hear Indians build big mining farm.because am also from india(south) here the electricity cost is bit high compared with J&K also its very cool environment which is good to handle the heat from miners.I am not sure if i run mining with 3rs per KWH will give some decent profits

### Reply 10:
Good luck buddy. Hope your investment will make you more wealthy. Keep posting and let us know how everything is going on Best wishes

### Reply 11:
Are you going to mine in India ? Where i live we don't talk about the bills like we talk about the weather.Apropos cheap electricity. You may use my code at genesis. The have a volcano driven power generator in their backyard.

### Reply 12:
What he should be discussing and thinking about is how long it will take him to ROI on those miners since electricity costs don't seem to be cutting into his overhead costs.That is minus any downtime when you have those miners starting to go down one by one.You got to be realistic here you know.There always will be a hardware failure running machines 24/7 no matter how the environment favors you in a colder climate than most of the entire country is hot most time of the year.

### Reply 13:
So where is OP did somebody rob him or what ? Would be nice to see some pictures and maybe if you want you can show your monthly profits + electricity cost Thanks

### Reply 14:
In India electricity rate is almost 7-8 INR kWh which is 0.12 USD kWh.

### Reply 15:
Really great to hear. More wishes to extend this farm and run more. Is that really 0.2 INR per unit? Because it looks like free electricity almost I am waiting to see your farm. There are many places in india with high eletricity charges.Happy to see that much profits. But am little afraid about GST rates since indian government is imposing much taxes on people. it created many problems since it affects small scale industries.You guys are lucky to have low electric charges

### Reply 16:
I'll move to India, energy prices in norway are humongous

### Reply 17:
For wires, whether you stick with aluminum or go with copper, make sure they're sized properly. Most electricians I've seen in India will undersize the wire and this causes the wire to melt in the wall. Same reason it's always ""when the wire melts"" not ""IF"".I always recommend a wire that's one gauge (or thickness level so .5-1.0mm in your case) thicker than needed for the breaker size. This way if there's an issue the breaker will trip and wire won't <truncated> there's a solution there too. Sent you a PM.

### Reply 18:
I would also be interested in some pictures, i am planning to open a mining farm myself and would like to get some advices from more experienced miners.Btw, have you experienced problems with S9 so far? i heard they break a lot and have numerous problems.

### Reply 19:
Architect here. What humidity level are you talking about - per<rest of thread truncated>
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 Antminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""wires"",
    ""hardware_is_owned"": false
  }
]"
17095,"Date: 2012-04
Topic: Added 5830. All hell broke loose
### Original post:
What motherboard are you using?

### Reply 1:
Have you tried using all the pci-e slots?i.e. put only one gpu, in each of the pci-e slots successively

### Reply 2:
Don't know.. If you don't even get the bios screen.. Maybe mboard died ;(Few reports of this board dying after working for awhile on newegg..<link>

### Reply 3:
Sounds like a failing GPU case to me. I'd had a couple 58xx cards going south this way from too much mining.

### Reply 4:
I think I have been having a similar issue. My problem is I can't rule out the card yet because of how long it takes to get the unresponsive state sometimes. Tried different power supply, even doing a two power supply setup to run 1 card off of. Is this what 5830 typically do when they are on their way out?

","[
  {
    ""hardware_name"": ""motherboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pci-e slots"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""gpu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""58xx cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  }
]"
11971,"Date: 2012-08
Topic: [Solved] CGMiner, bat files and windows.
### Original post:
Hey guys, I am used to work up with .bat files to turn on my miners in just one click, but I am having some problems with cgminer and btcguild lately.I can still connect manually with no issues whatsoever, but my bat files doesn't seem to work anymore.Can I have some tips?Code:""@echo onECHO ""Mine away doc.""ECHO.cgminer -o <link> -u (My user) -p (my password)""I know that btcguild doesn't work with passwords anymore, but for some reason I don't seem to be able to just take out the -p.And the user_miner stuff is not working properly as well.It might just be a stupid mistake, so please point it out.(To be honest I would be glad if it was a stupid mistake)Cheers guys, and thanks.

","[
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  }
]"
22855,"Date: 2019-01
Topic: Antminer T9 hash board temp problem
### Original post:
It might be a bug/glitch or maybe your temp detector is defective. Or it might a software issue you can try to reset it through holding the IP reporter or follow the guide from here Three Ways to Restore Factory Settings (R4/S9/T9)Since the hashrate is fine I think you don't need to worry about the temp unless if you are having issues about the unstable hashrate.

### Reply 1:
Hashrate is fine so ill just do the reset. Im thinking that it might affect the hashing on slushpool it showing only 21-22 th/s but i have a total of 25 th/s in my 2 antminer T9. I used to have 26-27 th/s before

### Reply 2:
If your pool shows the same hashrate for your worker that you see on the miner status page, I would not worry about resetting it or messing with it at all.Trying to fix the temperature sensor would not gain you extra profit if the hashrate was the same on the pool side (check in your slushpool individual workers list). The other temp sensors are still working and will shut the miner down if things get too hot.

### Reply 3:
i did reset and then update the firmware but still the same, it appears before but during on and off changing pool of the miner it disappeared maybe a defective temp chip. I have a total of 25 th/s in miner status for 2 miner but in slushpool it shows only 21-22 th/s might be bec of difficulty? sorry im new to this.

### Reply 4:
If your slushpool is showing more than 20 TH you must have at least 2 T9 miners (?)Assuming you gave them different worker names, you should be able to see the hash rate for each one in your workers page.

### Reply 5:
1. Antminer t9 = Miner Status : 12.7 th/s Slushpool : 10.7 th/s2. Anminer t9 = Miner Status : 12.9 th/s Slushpool : 11.2 th/sIs it normal to have less th/s on slushpool?

### Reply 6:
It can vary over time, is this the AVG hashrate from miner status and also the 1 day average from slushpool?

### Reply 7:
slush pool has 3 different hashrates based on different periods.as mentioned above, you want to look on the daily figure, the other 2 are meaningless to say the <truncated> is very normal to have slightly different numbers from what your miner shows and what the pool shows. but yours is quite a lot 12.7 - 10.7 = 15% of lost hashrate ( provided this is what the daily show)people have different numbers that they call ""okay"" some say it's 5% some say 2% . to me anything above 2-3% rings the alarm.here are the possible reasons of why would you get ""lower"" hashrate reported by the pool than reported on your local status.1- stale/bad shares caused by over-clocking your minerthis seems like the most possible scenario , 12.7th for a T9 means you are overclocking to an extend that it's going to fast not caring about the accuracy of the shares ( not really this , but this is the simplest way to put it).2- your internet connection is bad, latency is high, many shares do not get submitted.the hashrate on the pool is calcuated based on the shares your miner submit to it, if it does 1 million shares but submit 100 shares only then the pool will calc the speed based on the 100 shares.3- you are u<rest of post truncated>

### Reply 8:
Its from the Scoring Hash Rate in the workers tabMy antminer T9 is rated at 12.5 th/s so im not overclocking it, when i first run these t9(bought 2nd hand) im getting the correct hash in slush pool around 27 th/s for the 2 pcs T9 then i switch to BTC.com pool to check the difference in payout and notice the low hashrate there so i turn back to slush and noticed the lower hashrate than before.I have a good internet connectionI am in the middle east so the closest server is europe i think,i use pool 1 = europe , pool 2= singapore , pool 3= chinaHeres some screenshot<link>

### Reply 9:
You can try to set the frequency to 500mhz if there is an option to choose it and test if you can have less rejected and stale shares.Or set the frequency more below 500Mhz until you can get stable and lesser rejected stale shares but if the 550m is the lowest frequency then try to set it with this frequency then let's see if you can get lesser rejected shares but expect for hash rate drop.

### Reply 10:
your second miner has a problem with the second board (chain 7) it's missing a chip.and you are getting a TON of hardware errors and stale shares and rejected shares, these miners are over clocked, doesn't matter who overclocked it , i know there are T9 labeled at 12.5th but it's simply over-clocked. you need to reduce the frequency to get less rejected and stale shares.

### Reply 11:
ok thanks...i found out how to reduce it but how much frequency i will reduce? i saw 550m is there

### Reply 12:
based on the photos you posted your boards were running at 666m , tho it does seem like it has an auto tune firmware,i suggest you set it for 550, test it for a few hours, if all good, increase gradually, you need to have low rejected,hardware error and stale shares.note this- you need to <rest of thread truncated>
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  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""temp detector"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""temperature sensor"",
    ""hardware_is_owned"": false
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]"
23556,"Date: 2021-05
Topic:   S19 pro stopped suddenly
### Original post:
Here is some good <truncated> 13:10:03 Chain[0]: find 114 asic, times 02021-04-27 13:10:11 Chain[1]: find 114 asic, times 02021-04-27 13:10:19 Chain[2]: find 114 asic, times 0All three boards seem to be working great, whatever your seller told you about upgrading the firmware is probably b.s but I don't think this is a firmware issue in the first place, this seems like a power-related issue, do you have another good PSU to test with? also, what is the voltage on the wall?

","[
  {
    ""hardware_name"": ""S19 pro"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""PSU"",
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]"
9722,"Date: 2016-02
Topic: Examples and pictures of <100$ mining rigs
### Original post:
Well i have S1's;<link> you're in Canada, i could sell you one or two. Also the proper board to post this is; <link> so you can move your own thread there or whatever.

### Reply 1:
If it's just for fun, nothing beats the Gekkoscience compac stick. Sorry I just have this bad picture:

### Reply 2:
The best $100 spent in some time. Sometimes the small things matter more.

### Reply 3:
Im looking for getting a small rig (just for fun, im not looking for profit). Please post your small mining rigs. Thank you!

### Reply 4:
I Live in Spain... a bit difficult hahaha Thanks anyways

### Reply 5:
Nice One! Whats the speed and the hardware cost?

### Reply 6:
you can found the sticks from 25$ in USA or 50 in Europe , the hash rate is 8+Ghs to arround 15Ghs

### Reply 7:
Thanks for sharing! Nice one

### Reply 8:
I live in Spain and all the mining hardware here is more expensive than in other countries

### Reply 9:
I know sire, I'm from Spain too

### Reply 10:
The best way to get cheap hardware?

### Reply 11:
group buys <link> <link> <link> the market and make an affordable offert.

### Reply 12:
Sorry to insist on it, but my advice is that you don't buy anything more expensive than one or two compac sticks if you're really into it for fun only. Almost anything else you buy will have Cost greater than Profit+Fun. The compac is the most efficient one and also allows you to tweak the voltage settings to increase the hashrate. If you just buy one stick, even if it's more expensive in europe, you won't lose a lot of money compared to buying a larger rig that is either obsolete now or soon (unless you've got free electricity).

### Reply 13:
EU is going to be hard on getting cheap hardware.... due to VAT it will always be more expensive. Just the way it is.As far as cheapest normally forum on this site is. Just be careful as you might need escrow on some deals within it.

### Reply 14:
Looks like to me EU has more stickminers (just looking on amazon with their fancy little 8+ gh bitfury sticks). I kind of wish I lived in the EU now.. it must be a great place for (some) stickminers. Here in the US all you have are gekkos, overpriced bitfury sticks, overpriced antminer sticks, and overpriced block erupter sticks.

### Reply 15:
I ordered from the EU dealer on compacs he was very nice. They are higher in the EU. But he was great I wanted one in US as I had collected a set of compacs. He got it to me. Stickminers if your going with anything else then Compacs it really does not make much sense. And know that you likely will not ROI they are for fun and lotto mining.What I would do is try to find a deal on a S3 don't know if sub 100.... but they are losing value. For the money a S3 in that area.... is what I would look for. And you would have to have VERY cheap electricity.

### Reply 16:
Thanks for the answer. Which stick miner would you recommend?

### Reply 17:
Gekko 8+Ghs

### Reply 18:
Best place to get it? EU or international

### Reply 19:
Depends. Resellers can go from super overpriced to a mere 20 euros. These guys are resellers and sell the latest (and last) batch of gekkos. <link>

### Reply 20:
Actually, bitshopper is a licensed EU manufacturer. He builds and sells, rather than buys and resells.

### Reply 21:
Sorry! Thanks for correcting me. Haven't checked the info about gekkos for a while. I remembered that they resold, but in reality they build.

### Reply 22:
I bought one of them off of him event though I'm in US. I wanted to complete my set. He was very nice to work with, and went above and beyond to find a shipping option that did not cost a fortune.It is a little higher with being EU. But still a great stick miner if you need one.

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22217,"Date: 2018-01
Topic: Avalon 741 low ouput
### Original post:
I have an Avalon 741 and it is running at about 6 TH/s at present. It is supposed to be able to run at around 7.5 TH/s.I was curious to know are there any settings in the controller I could tweak to get the output up a bit? I have been trying different voltage settings in the advanced options and it appears to run best on the -2 option (runs at about 6 TH/s on 02 and 2.5 TH/s for some reason on +1, I would have thought it would be the other way around), I was curious to know what the -2 options means and if there is an optimal setting(s) to get the unit to maximum output?

### Reply 1:
-2 is slowest. No idea why it wigs out on +1, bad psu perhaps?Try 0 or -1

### Reply 2:
I've just switched it over to +1 again. I'm going to leave it a few hours and just make sure it's definitely going slow. Otherwise I will chuck it back down to 0.I actually have a spare PSU here I can try if need be.Would there be anything in the logging output that indicate the PSU was faulty that you know of?

### Reply 3:
From lightfoot's general troubleshooting thread:

### Reply 4:
Can you provide more detailed information such as your PSU, what type circuit you are running on. How many Avalons are you running? What are your temperatures? How long have you let it run? The more info the better including any error codes you might have in your API log, I'm not near mine but I believe they would be found by the heading ECHU, and ECMMAlso did you buy this new or used? Are you sure it's a 741 as the 721 model was a 6 TH/S miner

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9849,"Date: 2016-06
Topic: [Review] Bitmain Antminer S5 - A wonderfully modable and well performing miner
### Original post:
Great review!Care to mention what fans did you use. One looks like Cooler master, but which model?In addition, how do you power them up. It looks like you don't power them off the miner connector itself.

### Reply 1:
Great review. It would be nice if Bitmain made note of these mod's and incorporated them into future products so that they have the best miner on the market out of the box.

### Reply 2:
The SP20 design is ideal since it can stack in any direction as all ports are on the front, and the unit is a long 120mm tube. By replicating the S1/S3 board design Bitmain has somewhat limited themselves, and ideally the next revision will include a 4"" PCIe extension to allow plugging power in the front side.as for noise, try the stock fan at 5V. it pushes a lot of air but becomes reasonable volume (still quite loud though)

### Reply 3:
Using a Thermaltake for push, and an Antec for pull (the Thermaltake fans rub up against the mounting screws when used for pull).The Thermaltake fan has an adjustable RPM knob, and the Antec is a 3 speed adjustable fan.Powering them via Molex adapters - Not connected to the S5 controller at all.Antec pull fan : <link> push fan : <link>

### Reply 4:
How do I adjust the stock fans to operate this way ?

### Reply 5:
A resistor cable is the simplest. I'm not sure what this one is rated at, but they usually step down to 9V, 7V or 5V. Also be careful that they can take the current especially with these big boy fans.Next step up is a fan controller, can get some pretty cheap/small ones but again make sure its rated high enough to take the current. Fan controllers have the benefit that they're variable voltage.Both of these waste some energy. [No affiliate links]

### Reply 6:
Thanks for the review. I've sold one of my miners and now looking to get something more efficient and juggling between the SP20 and this. Seems both are very loud, both require a PSU but each has its own other pro and con.In regards to fans, are they just standard 120mm fans you can use? Do you think if you shield the top and bottom of the unit that a push and pull approach will greater improve heat displacement considering the air will be channeled in a streamline fashion?I'm interested to see how these will treat a 240v PSU.

### Reply 7:
Thanks for the review. Have you try to clock it up yet and see how those fans do?

### Reply 8:
Here's the cooler of the two units overclocked after 10 hoursOne unit is running hotter than the other with identical fans at the default 350 clock. Might just slap the stock fan back on that hotter unit and see if that doesn't help things. If I get some time, I might decide to re-paste that one hotter unit as well.

### Reply 9:
Sorry, I was never involved in computer modding before bitcoin, hence molex adapters are unfamiliar to me.Do you mean molex to SATA like radioshack ones below?<link>

### Reply 10:
Thanks for this Xian01. We have had similar mining hobby tracks and I have always kept an eye on your posts for up to date info.I ordered 4 of these but given the noise I'm sending two into my datacenter cabinet and will play with the other two in my office. I ordered two of each of your fan recommendations. I love philipma1957's tinkering, but trying to pull the best single solution out his review is challenging.I am glad to hear from everyone that the first batch appears solid from a performance spec standpoint. I'm in batch three and hoping for an ontime ship date of 1/4.

### Reply 11:
I've not yet had to deal with returns or warranty issues (I say this right as one of my B1 S3's has decided to fail hashing above 420GHs @ the default 218.75 clocks. All chips appear to be fine with no x's showing..)What methods have you tried to get this issue resolved ? It was to my understanding that Bitmain's warranty coverage and DOA policy was fairly decent, so I'm concerned by your report.I ended up slapping the stock push fan back on the hotter of the two units (left the Antec pull fan on for shits and giggles) and the unit is running ~7-10 degrees cooler without the Thermaltake push fan. Will monitor throughout the day.It appears that keeping the S5's under 60C board temperature is ideal.

### Reply 12:
The Thermaltake fan has the molex adapter built in, and the Antec ships with a <truncated> as the Antec fan uses a 3 pin adapter at it's base.

### Reply 13:
for the fan noise - try running the stock fan at 5V using one of these (or wire it yourself)5V is sufficient for running at <truncated> when drawing in air thats about 5C. In the same conditions 7V is about 30% louder and brings the temps to 57C/53C.for room temperaure intake, 5V probably isnt suitable for running above 350MHz

### Reply 14:
do you have this product link as there are 12 pages related to molexawesome site!thanks

### Reply 15:
no clue on a product link, but im sure <truncated> would have some vi<rest of thread truncated>
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17235,"Date: 2012-08
Topic: 5970 (drivers) crashing after a few hours?
### Original post:
I have a dual 5970 mining rig, and I use CGminer. I use 800mhz core and 267mhz memory. I don't know what on earth could be the problem... My GPU core temps don't go over 80c and VRMs don't go past 110c. When I witness the crashing, I notice that the ATI driver goes first, and then CGminer crashes.

### Reply 1:
Try it at stock clocks to rule that out entirely.

### Reply 2:
Not all 5970 are created equal. One of my 5970 cores is only good to 725 MHz at 1 volt. One of my other 5970 cores is good to 810 mhz at 1 volt. One of your 5970 cores could simply be low quality and not be capable at running at such high clocks, even at the stock volts of 1.05. If a 5970 core is crashing, reduce clock by 5 mhz, and repeat until stable.

### Reply 3:
What kind of PSU do you have? You could be running into voltage droops.

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    ""hardware_name"": ""VRMs"",
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10052,"Date: 2016-11
Topic: MesaMiner info?
### Original post:
Anyone have any reviews or additional information on <link>

### Reply 1:
This is SCAM!It's just like the Minerslab scam, use the Google picture search on the photo and you will realise it.Thread about the Minerslab scam: <link> this picture of the so called ""MesaMiner""<link> this picture of the so called ""SMART Miner""<link> anything similar??Same shit all over again, I'm getting tired of these.

### Reply 2:
Same. Also won't give a tour lol in that address is Las Vegas lol <link>

### Reply 3:
Its a scam, don't buy a miner from them stick with Bitmain and you will be much much happier believe me

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    ""hardware_name"": ""Minerslab"",
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  },
  {
    ""hardware_name"": ""SMART Miner"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""Bitmain"",
    ""hardware_is_owned"": false
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]"
24026,"Date: 2022-10
Topic: S17 controlboard cannot find IP.
### Original post:
The miner cannot be started (cannot find IP). Light greens no works.Im think need recovery Nand. idk sure ..any person help me..Im try to add firmware original to my s17 controlboard and later happent this.Im have one asic s19 J pro with amlogic, buy one s17 c55 controlboard, first unlock and later add on sd firmware bitmain s19 j pro original and happens this problem.Video here:<link>

### Reply 1:
What do you mean? Did you flash s17 with s19 firmware?If I'm right why not flash it again with s17 firmware through an sd card?You can also use brainsOS firmware if ever the above does not work then flash it again with stock firmware.

### Reply 2:
I watched the video and that looks like an S17 control board, so where does that S19 come into play here? anyway, the green led is constantly on which is bad, it has to blink a bit when booting, and the boot files in this control board are <truncated> need to go to <link> and download the TF file under the name > <truncated> follow the flash instructions.

### Reply 3:
Hi, I have a sj 19 pro like to put braiins on it and they made me switch to the s17 c55 controlboard, because I had amlogic my asic, for that reason bought that.I did the unlock and then put the original bitmain firmware, s19 j pro and then it never detected the ip and the 3 lights never came on again.

### Reply 4:
mikeywith, I have tried that file and it still does not work..

### Reply 5:
My controlboard picture:<link>

### Reply 6:
Hi, try with braiins OS Firmware not work.. :/Thanks

### Reply 7:
Actually, I can't understand what you trying to say would you mind using a translator instead and paste it here.If you have a control board of s19 and it's broken and you buy an s17 control board and you are trying to flash it with s19 firmware there is a big possibility it would brick. If you have a bad s19 control board you must replace it with a control board which only use for s19, not for the s17 control board. Take note if you have a fake SD card with fake volume the firmware that you are trying to flash is always corrupted so better use an authentic SD card Samsung or Sandisk.

### Reply 8:
Did you try a hard reset? you can do that by pressing the IP report button while the board is powered off, keep pressing the button while using your other hand to reach to the 12v cable and plug it in, keep that IP report button pressed for at least 10 seconds, the control board should blink, and that would signal a successful hard reset which could bring it back to life.

### Reply 9:
Hello, I tried everything, but I have not been able to fix anything. The Chinese company where I buy them send me another 3 new ones, the ones that do not work I still have them here, I can send someone a free one, send me private if you are interested to see if you can fix it and inform me to do it.Thanks

### Reply 10:
Are you sure that you successfully flash them?I guess the control board is fully bricked what I think is that flash the control board through the serial port if you don't have a serial port cable you can jump them just make sure to jump them RX, tx, and gnd.There is a full guide about this you can follow the guide from the link below.- <link> I would like to suggest remove all hash boards and fans from the control board and test if you can find the IP. If not then your network might have conflict IP sometimes Bitmain send units with duplicate mac address if you can able to replace the mac address it might fix your issue.

### Reply 11:
Step one you need a SD card that has less than 32 GB, the perfect card is a 4GB or 8GB SanDisk brand one.Step two you need a serial USB adapter, I recommend a CP210x based model.(this is the only way youll know whats going on while you are flashing your control board). When you have these two extremely cheap items you can complete all instructions with a little help from us. No need to mail anything <truncated>

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23941,"Date: 2022-05
Topic: PIC Chip Errors (Again)
### Original post:
Hello all, I put a new PIC chip on an S17pro board following thierry4wd's informative guide here: <link> and some PIC errors. The hope was to resolve these issues. MPLAB process went well and hopefully, I can put up a quick guide for S17's because there are some nuances. Although I did get ""MPLAB's memory is blank so no programming operation was attempted"" and had to switch to manual in the memory settings to Program Memory Range(s)(hex) to 0-2b7f (not sure if this is correct for the dsPIC33EP16) to successfully program from ""Let PIC Kit Choose"". In the Memory settings tab: Configuration Memory was checked and Program Memory was also checked. Preserve Program Memory was Unchecked and Preserve Program Memory Range(s)(hex) was left blank. So I'm uncertain if that has something to do with the errors below in the kernel log. Another possibility is thierry said to use only the stock firmware, after MPLAB flash and when booting with the hashboard in question. - I didn't do that because I was using a third party firmware and thought the hex on the good board and transferring it to the new PIC board would be OK since they are all running the firmware. Maybe understanding is off and that th<rest of post truncated>

### Reply 1:
An update: See below after hooking the board up again to MPLAB after trying to boot the miner with the non-stock firmware, I haven't confirmed it will work with stock yet but it seems to revert to errors as thierry4wd has pointed out. Next is to erase this and put the good hex on from the other good board and boot with stock firmware. Code:The following memory area(s) will be verified:program memory: start address = 0x0, end address = 0x2b7fconfiguration memory[ Pgm ] at 0x0, expected 0x00040200, got 0x00ffffff.You have set the program speed to Normal. The circuit on your board may require you to slow the speed down. Please change the setting in the tool properties to low and try the operation again.Verify failedVerify Failed

### Reply 2:
Installed Bitmain's original firmware <truncated> I've included the whole log and what sticks out is Chain[2] PIC init failed! set_miner_status: ERROR_SOC_INITstop mining: soc init failed!So replaced PIC chip with new, flashed a good hex onto it. I'm not sure what to look for next and appreciate any direction on next moves. Thank you. Edit: I am running with just this board connected. Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total page<rest of post truncated>

### Reply 3:
Your PIC fw version shows 0xff, it has to be 0xb9 like soCode:2021-08-05 06:17:17 <truncated> Check chain[0] PIC fw version=0xb9I believe you must be doing something wrong in the process, did you compare the hex and made sure you have the exact one extracted from a working hash board?

### Reply 4:
Thanks for this direction, there is def a glitch in my process somewhere. I threw the good board in and got exactly what you described. Attached are images to my last attempt to transfer the hex in MPLAB and an image of the memory settings because I get that error ""MPLAB's memory is blank so no programming operation was attempted"" if I don't use ""manual"" in the drop down. I'm not sure if this issue is connected in some way and in addition, I'm not sure you can check firmware version after programming in MPLAB IPE v5.50? <link> be sure it couldn't be anything else, I triple-checked all solder pads at and around the PIC location and checked all capacitors with a MM. Things seem to check out on that front. This is humbling but I'm grateful for the help.

### Reply 5:
If the PIC file that you flash is from modified firmware I heard that you will get an error and the firmware version will turn to ""PIC fw version=0xff"" and also you will get that issue if you didn't set the voltage properly. So possible that the PIC chip is bricked. Do you have an extra PIC chip? Use the extra PIC chip and don't use hot air to solder it use a soldering iron and check if it is in the right position and then repeat the procedure from thierry4wd's post but this time make sure it was from the original stock firmware don't use non-stock firmware this might be the reason why you get the ""PIC fw version=0xff"".Also, <rest of thread truncated>
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15751,"Date: 2016-05
Topic: Antpool lost 100PH/s (about 30%) of pool-power in 24 hours - INFO
### Original post:
On the board I got the information that some people are having problems to log in since some hours/days.Some didnt get a payout from antpool, well ...100PH/s is lost and it seems that Bitmain has some problems right now.The webshop was / is down, too.I have no problems in connecting or getting my withdraw --- FOR NOW! Any more informations out there?

### Reply 1:
Antpool thread is here, please use it:<link>

",[]
9758,"Date: 2016-03
Topic: Putting an S7 in the room I am sleeping in?
### Original post:
Hello everyone!I need to let you know that I have never mined before. I was considering getting an S7. I need to ask you how noisy it is? If it is too noisy for sleeping, is there a way to isolate it?thank you

### Reply 1:
On it's own it is way to noisy to sleep in the same room as. Even ducting it out of the room, I think it will still be too loud.

### Reply 2:
I couldn't sleep in the same room even with my Antminer S2. And S2 is less noisy than S7.

### Reply 3:
Are you deaf? If not, then no.The noise is about equivalent to someone screaming in your ears, non stop, constantly, you'll also damage your hearing pretty rapidly. If you're not deaf right now, you probably would become rather quickly.I had to isolate the miner in a shelve covered in acoustic panels, then when its at half fan speed, the noise is bearable, in the next room with the door closed. Bearable as in under the 60dB threshold of noise you can listen to without hurting.At which point then using ear plug make it ""quiet"".

### Reply 4:
Everyone is different but I would find it hard to sleep in same room....about half as loud as a vacuum cleaner running depending on the fan speed you run it at. Then you will have the heat also....so depending on where you live it may get warm in the room as well.

### Reply 5:
Honestly at first it will be crazy loud and you won't be able to stand it but eventually you will get used to it and your mind will just filter out the noise and you can probably sleep in it. I live in a noisy city so the miners actually help filter out cars and people talking outside.But for an S7, you will need to add a muffler or two or undervolt it.

### Reply 6:
Well, my S7 running at lower fan speed, has a super noisy and high pitch noise. And even at highly reduced fan speed, my dB read it louder than my shop vac at one feet, so. Sleeping with a S7 in the room is perhaps like having 1 shop vac taped to each of your ears.

### Reply 7:
Not to mention the PSU if your using the 220/240 Bitmain one that thing has a small high rpm fan. But I would not suggest for anyone to sleep with a S7 in their room, it as just not built for quiet use. It's loud enough it will be a issue for most in room you sleep in.If you need one in your room look more at Avalon 6. It will give you a quieter machine. Yes it will cost more per T but you will be able to sleep with it in same room, I had it in mine during a lot of the testing I did on it.S7 is a good machine but you really need an area for it in my view. Unless you do some modification to make it quieter.

### Reply 8:
Would anybody's opinion change if you were willing to underclock it to say 500 MHz and then reduce the fan speed accordingly? I get that it's loud device as it normally ships from Bitmain. Can it be ""tamed"" if you are willing to sacrifice hashrate?Anybody ever tried this experiment?

### Reply 9:
Get used to it, aka damage your hearing. No, you can absolutely not sleep in the same room as an S7.Search youtube for ""antminer s7"" and listen for yourself.

### Reply 10:
I actually sleep in my dorm which i have an S7 in. Its a batch 4 and i undervolt it to ~500 frequency and i put fan on 35%. The chips run at around 50-53 C...however i think I am used to it by now. Im starting to have second thoughts about a few weeks of the constant fucking noise. On a side note....does anyone know of any hosting for the miners? If so could you please send me some details. Please and thankyou

### Reply 11:
What country are the miners located in? There are tons and who you go with pretty much depend where you are located. Contact Allinvain for Canada.And you can ""get used to it"" if you want but anything around that noise level will damage your hearing over time. It tooks months for me but eventually it caused damage to my eardrum and its been taking months to fully heal.

### Reply 12:
please dont do it, they are wayyyyyyyyyyyyyyy too loud

### Reply 13:
You can lower that fan to 30 or even 25, make sure your temps are 60-65. 65-70 would be high but okay (too much in my opinion)

### Reply 14:
I kept an SP10 in my room for 6 months and an Avalon gen 1 before that - don't. Whether or not you can is not the question.

### Reply 15:
you got your answer , i just had to post to this thread since i was amused by the question and the variety of answers you got !!! good luck (also you may need some blankets since not related to noise I think the s7 runs a lot hotter than the s5 so you may want to keep the room temperature low the unit will blow heat but unless it is pretty cool in there i think running these miners in a normal household temperature range is not recommended unless you are going to really lower the clock speed you would not want to burn it up

### Reply 16:
Please dont do it. Even at low fan speeds you will hear it when you sleep. It wont be extremely loud, but its not good for sleeping. And your room will be very<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""220/240 Bitmain PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SP10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon gen 1"",
    ""hardware_is_owned"": true
  }
]"
22751,"Date: 2018-09
Topic: ayyyyyyyy
### Original post:
Good job bud! You just saved a lot of headache of trying to figure out how to do this from the software point of view.

",[]
13784,"Date: 2022-07
Topic: CKPOOL solo pool gives ERROR on mainnet.realloc():invalid next size.Help please?
### Original post:
I have managed to get it to work with testnet and solved many testnet blocks. When trying to run it with bitcoin mainnet and starting ckpool <link> and get Code:realloc(): invalid next sizeAbortedI have tried everything . Messed with bitcoin.conf to the max to make it less consuming . My vps is 4 core and 4gb ram. Should not be having this issue right?

### Reply 1:
Yes . I am aware i should upgrade server to better specs. More cores more ram. My budget wont allow that right now. Tell then i have 2 VPS with not the best specs but i can run the bitcoin full node on one and ckpool on the other. My goal is to figure out how to work with the limited resources now. Then later upgrade the VPS as i save more money to be used to upgrade the VPS's. Strange thing is. I am able to run Bitcoin core testnet and Ckpool on 1 vps and works fine. What about moving to mainnet has cause this error to happen? Very excited to learn and gain better understanding . Thank you in advance for your time in helping me gain more knowledge .

### Reply 2:
Purchased a testing Server to work through some of the issue. This server has 24 cores 96GB ram . Still having these errors . Any help. I am very generous to people that help. If coin is what you seek then so be it. Please help .Errors after running sudo ckpool -k -LCode:malloc(): corrupted top sizeAll the errors have something to do with memory . Something from bitcoin testnet to mainnet changes that throws these errors. I can run and mine bitcointenet no problem but switching to mainnet and nothing but problems.

### Reply 3:
Code:[2022-06-30 22:12:23.062] ckpool generator starting[2022-06-30 22:12:23.062] ckpool stratifier starting[2022-06-30 22:12:23.063] ckpool connector startingmalloc(): invalid size <truncated> error logs

### Reply 4:
Alas the comment by ck is wrong.It's his usual ""I think this is so, so I will claim it is true"" god complex.Usually, as a programmer with experience in developing software, it's advisable to test things first, before making claims.

### Reply 5:
You know ckpool source code better than anyone . Have you seen my errors before? Can you tell me why i get no errors on testnet but then issues on mainnet. Please. If anyone can help it is you. I have tried everything. Changing hardware 96 GB ram and 24 cores. Nothing seems to fix this

### Reply 6:
He kicked me out of the ckpool git years ago - sorry my version is not the same.His git doesn't even work with ckdb - he broke that back then just after he kicked me out.I've only ever run it on intel 64 bit hardware. No idea what you are using.However, sounds like you need to learn how to debug code to find whatever the problem is.This is why I've publicly said from the start when we started developing ckpool/kdb that it's not point and click, you need to be a good developer (as well as many other things) to run a pool.

","[
  {
    ""hardware_name"": ""4 core and 4gb ram VPS"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2 VPS"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""24 cores 96GB ram server"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""intel 64 bit hardware"",
    ""hardware_is_owned"": false
  }
]"
21093,"Date: 2016-07
Topic: Fake stratum server
### Original post:
Hi!Is there some test stratum server that don't need internet connection and send fake work to miners.Problem I have is that I have hydro power plant that is in a middle of nowhere. I have mobile connection that is drooping out from time to time and I have problems with miners because of that. Looks like heat cycle are a problem. So I would like to have them on even when there is no internet...I'm also open to other ideas how to solve that. But this is a mobile line on bad connection so installing node on it is not a good idea...Thanks

### Reply 1:
You can run a dummy testnet with this, though it seems pretty old:<link> you wanted to you could even put your own stratum proxy in front of that:<link>

### Reply 2:
why fake, you can run daemon on same algo altcoin with a small blockchain, setup stratehm stratum proxy with that daemon being last solo backup pool.

### Reply 3:
Mobile unstable connection... Why put more stress on it by running any chain...

","[
  {
    ""hardware_name"": ""hydro power plant"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mobile connection"",
    ""hardware_is_owned"": true
  }
]"
10934,"Date: 2021-04
Topic: Need some help on some info for old S3s
### Original post:
I got two used S3s to play around with bigger SHA256 asics the previous owner didn't treat these things right the fans were in wrong orientation once I tested them unit 1 a somewhat good control board 1 good hash board 1 bad hash board, Unit 2 1 Bad controller and 2 good Hash boards. So I tried to make 1 good unit out of 2 half to non working units. I got it working but after a few boot the internal USB to UART section went belly up not seeing the Hash boards or Fan signals tried it on all 3 working hash boards. I was reading is post from back in 2015 on here were a adapter for the S3 hash board was worked on sadly I can't find a picture of the board or even the schematic, and the site alot of the picture were stored on didn't make it to the wayback machineI am referencing this thread - <link> am looking for the circuit diagram or schematic or even a good picture if it is a single layer board. If there is another way let me know. I mange to find the pinouts I am thinking for the S3 Hash board from the thread, Can you use the old USB Block Erupters to slave out its USB to UART interface if that is what its header is for, I have 3 of those. Right now the 1 and a half S3s are paper we<rest of post truncated>

### Reply 1:
<link> you could do is hook the boards via UART -> USB and try this way.There is also this github project that used similar way.Mighty Miner<link> created for the S1 but I am sure there is possibility of this working on the S3 boards too.Hope this helps.

### Reply 2:
Both control boards will boot the custom OpenWRT and can load the Web interface but 1 the fans go full blast and the other not but doesn't see Hash boards or the RPMs on the Fans but the fans turn off waiting for the turn on command I am guessing. The first link I am guessing forces the thing to do a factory image reset The second link being mainly javascript which I guess replaces the web panel

","[
  {
    ""hardware_name"": ""S3s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SHA256 asics"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""internal USB to UART section"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""USB Block Erupters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""UART -> USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Mighty Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OpenWRT"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Web interface"",
    ""hardware_is_owned"": false
  }
]"
21086,"Date: 2016-07
Topic: What is the difference between working RPM antminer s7 batch 19?
### Original post:
recently buy 3 antminer s7 good batch 19 and I&#39;ve been inquiring about how they work, let me know what is the difference between the RPM because I can see that you can work on more than 700RPM then I you recommend? and I am also connected to ANTPOOL seems to them that pool?

### Reply 1:
s7 is old gear and pretty much worth very little , unless your power cost is free or very low cost.So before I give any advice to you I ask you how much does your power cost?

### Reply 2:
Phil is correct you need very low power cost for the s-7 to be worth while.As for setting the frequency higher then 700 sometimes you get melted gear. <link>

### Reply 3:
so let me show you the s-7 in an earnings calculator.<link> 10 cent power it is a loser no matter how fast you run it freq 650 ,700, 750 all loseat 5 cent power it may or may not make moneyat 3 cent power you look like you will make money but racing it could burn it

### Reply 4:
Thanks, in my country the power is chepear than another countries, I live in Venezuela and i bought 3 antminer s7.. one week 112$ and i am conected to antpool.. what pool do you recommend me?

### Reply 5:
okay you have cheap power . so your gear should be able to make more money then it cost to pay for the power for 18 months maybe even 24 months.So pace your self and do not race it and burn it up.so rather then 700 freq do 675 freq set fans at manual speed of 70% and let us know how the gear runs.a screen shot of the gear running.this is with the important info in red.this is same with no info circled

### Reply 6:
You really need to decide the nice thing about antpool and F2 is PPS. So you bring in a steady income but pay a fee. There are pools like Kano.is that use a system where luck is involved in it's case PPLNS ( <link> ). Kano I would say has the most loyal users. But again you need to decide what you want to mine at.Are you saying you one week for the 3 costs 112 dollars? I am not following what you said with amount.

","[
  {
    ""hardware_name"": ""antminer s7"",
    ""hardware_is_owned"": true
  }
]"
23755,"Date: 2021-11
Topic: S9 Zeroes Missing on Asic Status of Two Hashboards
### Original post:
Both Chain 6 and 7 are missing zeroes benath the Asic status column and wondering if anyone has had a similar issue and knew of a fix? Below is my kernal log.[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: 0 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000] Kernel comm<rest of post truncated>

### Reply 1:
PLEASE edit your post to use the code tag from the toolbar. It looks like this #Text walls are very hard to follow, using the code tag changes that into a much more readable scrollable box format.

### Reply 2:
There are lots of CSC errors and yeah there are lots of missing chips on two dashboards. Would you mind to try check all the hashboard physically it might have a loose heatsink then try to test all hashboard one by one you can follow the guide from this link below to find the defective hashboard.- <link> don't forget to check the fan.

### Reply 3:
Well, in fact, all 3 hash boards are missing zeros, you just couldn't notice the last one because it's missing a single chip.When you carefully browser through the kernel log you will see the chip count test states the <truncated> has 26 asicChain[J7] has 22 asicChain[J8] has 62 asicThe complete chip count for all S9 miners (excluding S9k and SE versions) is 63 asic, J8 will work fine with 1 missing chip, actually, even boards showing 54 chips will work fine (the hash board is divided into sub-domains only certain chip failure will pass the test), the other two showings 26 and 22 will most likely not produce any hashrate, the most likely scenario for this issue is physical damage to one or more of the chips.The problem is usually beyond fixing, but trying different firmware, PSU and all that might fix it.

","[
  {
    ""hardware_name"": ""Chain 6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Chain 7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heatsink"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  }
]"
21177,"Date: 2016-11
Topic: bfgminer without sudo? (usage of --setuid)
### Original post:
Hey miners,running bitcoin-core-0.13.0 + bfgminer 4.2.0 on Debian8.6 (ARM) I didn't figure out how to start bfgminer with an unprivileged user. I tried:Code:sudo useradd -s /bin/false bfgminerUsersudo adduser bfgminerUser dialoutsudo bfgminer -o <link> -u MyRPCuser -p MyRPCpassword --coinbase-addr <truncated> --coinbase-sig ""rig1: BlockErupterOrange"" --setuid <truncated> bfgminer can not find any devices this way...Code:sudo bfgminer -o <link> -u MyRPCuser -p MyRPCpassword --coinbase-addr <truncated> --coinbase-sig ""rig1: BlockErupterOrange"" ...works fine (sowithout --setuid MybfgminerUser).Any ideas?sj7

### Reply 1:
Use the support thread please:<link>

","[
  {
    ""hardware_name"": ""bitcoin-core-0.13.0"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bfgminer 4.2.0"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Debian8.6 (ARM)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BlockErupterOrange"",
    ""hardware_is_owned"": true
  }
]"
11041,"Date: 2021-11
Topic: Need honest opinion
### Original post:
A few weeks ago I ordered a Canaan Avalon 1246 miner from CoinMiningCentral. I went with the top performance model available from Avalon and paid a fair price for it. Fast forward a bit and I received my order- sort of. I received a Canaan Avalon 1166 Pro instead of the 1246. CoinMiningCentral is giving me a story that the manufacture builds them the same, same hardware, etc. and the current 1166 Pro performs at the same hashrate as the 1246 I ordered and paid for. I call B.S. At the time I ordered the price difference was around $500 USD. They've acknowledged I was sent a 1166 pro but don't see why I am not happy.What is your thought of my situation?Sam

### Reply 1:
I'd ask for the difference in price to be refunded.They aren't exactly the same.Not sure which model you ordered and what model you got but the 1246 is 38J/TH and the 1166 Pro is 42J/TH so you are going to burn more energy to get the same performance out of the 1166 Pro.Also isn't the 1246 like 90TH/s and the fastest 1166 Pro is 81TH/s so it doesn't seem they are at all equivalent.

### Reply 2:
Hi, @QasammI saw Coinminingcentral's offers - 1246@6K GBP and 1166Pro@5.5K GBP.Pls refer to ""<link> and google translate yourself, thus you can see some details - 1. ""Avalon attaches great importance to the safety of the machine, has upgraded the machine's firmware, strengthened the machine's anti-tampering mechanism, and built an AI chip K210 on the machine's main control board. It analyzes the fluctuations of computing power through intelligent algorithms, adjusts the fan speed, and identifies potential network attacks and loopholes, thereby stabilizing the computing power within a reliable range and preventing the loss of computing power. Currently only one can achieve this level of security.""2. ""Avalons new A1246 model is only one month away from the release of the A1166Pro. The recent intensive release of Jiaan is also to meet customer demand for models with large computing capabilities as soon as possible.""Sounds like A1246 basically is an A1166 Pro + K210 AI chip in the control board, achieving some 41>38J/TH, like a vendor-provided HW minor upgrade, similar effects to Braiin/Vnish. <truncated> short, it's better you ask the UK's Coinminingcentral to at least refund you the <rest of post truncated>

### Reply 3:
Thank you all for your input.I'm asking for a refund of the difference.I will update all when I hear back.

","[
  {
    ""hardware_name"": ""Canaan Avalon 1246"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Canaan Avalon 1166 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AI chip K210"",
    ""hardware_is_owned"": false
  }
]"
16043,"Date: 2019-12
Topic: Mining Business Bank Account?
### Original post:
What USA banks allow bitcoin mining business accounts? Most major banks have specific provisions ""no virtual currency business accounts""? I'd like to have a reliable bank account and having trouble finding a bank.

### Reply 1:
Metropolitan Commercial Bank<link> based, so they are very strict about certain things but they do like crypto a lot. They are actually the ones issuing the BitPay Visa.-Dave

### Reply 2:
I'm not living in the US but I would like to share what I found when I search on Google and I found a list of <truncated> banks).Take a look at this <link> might find a bank from the above list that supports mining if you generally mining Bitcoin then the list above is what you are looking for.

### Reply 3:
@Harlot, the problem is that several major banks in the US such as Citbank, Wells-Fargo, etc. will not work with a business that is involved in any way with crypto. Private accounts they don't seem to care about.

### Reply 4:
wells fargo questioned me about depositing money from coinbase.but that was years ago.

### Reply 5:
This is a problem specifically with business accounts, which I have found out. I have for many years deposited and bought thru a major bank (one of Chase, Citi, BoA, etc) on a personal account, no questions asked, no problem, but when trying to open a business account, almost every major bank has a specific restriction saying ""no business accounts related to crypto"". Yes it is that broad, go ahead and try it and see.I am hoping there is some smaller or just online/remote bank that will allow a crypto-related business account, just wondering if anyone knows.

### Reply 6:
As I said in my earlier reply. Metropolitan Commercial Bank<link> do support and understand crypto.A business you can't open an account online , I don't know many banks that will let you open a business account online, you have to talk to them to open the account . But, once you do open it you can do everything online.-Dave

",[]
16094,"Date: 2021-07
Topic: Why China shut down mining farm? Carbon Emission.
### Original post:
Why China shut down mining farm? Carbon Emission. here is one great article, Predicted this shutting down action.Bitcoin Segwit2M B2X)-Green and Scaled bitcoin.<link> are shutting down all high energy consumption, high pollution factory, because of Carbo emission. this is global govs unified action.we will see the hashrate drop 30-50% at the end of this year. because in winter, all Chinese farm are shut down : no enough hydro , and gov control the carbon emission, shut down the coal-burn electricity supply.good timing for over sea miners join mining. if you have cheap than 4 usd cent electricity, and enough capacity.

### Reply 1:
Sorry, since they still support anti-consensus things, I don't trust them for being fair also in their news. Do you have other source for this ""information""?I mean that 50% drop sounds catastrophic, but on the other hand the number seems to be plainly out of the belly. So without better proof, it can go straight into the FUD bin.

### Reply 2:
This probably belongs more in mining speculation but we saw a 20%+ difficulty jump on the 13th, but that came after the 12% drop on the 1st, now if everything stays stable we are looking at about an 8% drop in a couple of days. That looks more to me like the difficulty is moving with the price (with the 2 week delay of difficulty adjustment)AT $60k+ BTC I was thinking about putting some S9 units back online.At $40K- BTC I am thinking about pulling the S19 offline and selling it here.How many other people wind up in the same loop?Saying China is shutting down farms for carbon emissions is FUD at best.-Dave

### Reply 3:
so, go to google the policy of Mr. Xi announcement on May 1st. here is link: <link>and china Copper smelting companies reduce imports of copper concentrate in order to reduce power consumption .<link>

### Reply 4:
take a look the reply of next post.

### Reply 5:
Wow, they actually use coal for power? I'm no expert on how our electrical grid is powered, but I thought most countries had done away with coal--please correct me if I'm way off base, which is quite possible. I don't know what to make of this news either, since I don't really trust information coming out of China. What I do know is that bitcoin miners aren't likely to give up mining, and if China makes it illegal they'll move their operations to another country where it's still legal to mine. I know I've written that before, and I believe it was with respect to China as well, so I'm thinking this is probably a bunch of BS.You have cheap enough electricity where you live? I thought your state (which I won't disclose) had pretty high utility rates. Do you still mine bitcoin now and then?

### Reply 6:
The data center we use forces you to have 2 KVA per rack. I can have 1 RPi in the rack and it still comes with and we pay for 2KVA.What is nice is that it is in aggregate so 4 racks 8KVa but I can have 2 with 3 and 2 with 1 and it's all good.So, when we needed more space but not more power we got an extra 4KVa that I have been using to run some old servers for legitimate work.BUT, it's just to make my life easier. When BTC was at $60k I was thinking of shutting them down and bringing in some S9sWith the above being said, I think it's important to note that there is probably a lot of small miners around that are in the same boat. They have power that they are ""forced"" to pay for so they mine with it.Seriously, if we could have had those racks for less money but only 1 KVA you bet we would have taken it.I have a client who has office space that has fixed electric costs based on space. He runs some GPU rigs since no matter how much he argued with the management company of the building, the power cost would not budge....so now instead of using 30% to 40% of the power they bill him for he is using 85% to 90% If he could figure how to be at 99% without the risk of going over and getting <rest of post truncated>

### Reply 7:
Yeah we got the sweetheart five year deal it ends in 2023.our main warehouse guy had a contract for power he prepaid for five years.he lost his main customer an icecream company and had prepaid power.we came along and have been there since december 2018.lots of niche guys like us with 200kwatt here 100 kwatt there.we have access to 500 kwatts. dont have the gear .so will expand slowly. hope china really does kick out miners it will be good for me.btw eth hash grows like mad as it simply pays more $$$ per watt of power.

### Reply 8:
more detailed policy coming. here is Inner Mongolia banning mining policy:<link>

### Reply 9:
All these carbon emissions in relation to bitcoin mining have nothing to do with reality and can only be applied to countries where there is a shortage of electricity, otherwise just speculation, because according to research, the annual electricity costs of bitcoin miners are 113.89 TWh, while in the production of gold, the figure reaches 240.61<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9 units"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RPi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""old servers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU rigs"",
    ""hardware_is_owned"": true
  }
]"
20923,"Date: 2016-02
Topic: Can't connect avalon 6 miners to the pool.
### Original post:
Hello, i bought 10 miners, i have my rasp PI, everything is connected correctly. But the miners are flashing yellow all of them, I put the pool address and my worker username and password and it won't connect to the pool. Please help. At the beginning i manage to get 3 of them working with the blue light, but i didn't notice that 1 of the cables that connect the miners to each other was disconnected and then i connected and restarted the miners, since then, i am not able to get any of the miners working or connect to the pool. all on yellow flashing.

### Reply 1:
You should move this to the mining section, you'll get more answers there. ;-)

### Reply 2:
pleasemove your thread to mining support<link>

### Reply 3:
you said you have 10 miners on 1 rasp pi in a daisy chainfour pin daisy chain wire could be bad do just 1 avalon6rasp pi ---- usb cable - little adapter ----- four pin wire ---- avalon6post back and let us know if 1 works.also 10 machines use a ton of power how are you getting the power to the ten units?

### Reply 4:
I have 4 running as I type.I ran some group buys sold around 36 of them.I had a few bad four pin wires.I also never went past 5 units on a daisy chainkilo17 and markAZ ran 8 or so on 1 daisychain.

### Reply 5:
Do you have multiple of the USB adapters? You should with 10. Try just splitting it into 2 sets of 5 and see what happens. You should have 2 usb adapters on your RPI. And you can use a cheap unpowered hub if you want more.I wish I could find it off hand but I could not in quick search. There is a picture somewhere where they show how to split it up on chains. I know i have seen it but my searching skills failed me tonight.If splitting it in 2 does not work start by checking one by one. It won't take two long. Just plug the miner via usb adapter with 1 cable. Go through and check each cable. After if you know all cables work start trying each miner and see if that does it. So 10 cables, and then 10 A6's. Let us know how it goes.

### Reply 6:
Thank you for the replies, i now have 8 miners running. Thanks, it was a problem with a data cable. The other 2 are waiting because i don't have more data cables, need to order more, do you guys know where i can order those cables? What is the name of the cables? Also, I'm in mybtccoin mining pool, and the hashrate is going up and down. Like from 14 to 38 TH/S, is this normal? It's been like 3 hours with the miners on. I should have 28 TH/S, not sure why it goes all the way up to 38 and all the way down to 14.

### Reply 7:
Where did you order your miners at? Normaly it comes with extra.But I would email BlockC and ask to purchse some. If does not work hit up Ehash. Those are two official sellers, and you can also see if anyone on forum has extra's if that does not work.

### Reply 8:
I order them in the US. Yes the guy told me he is going to send me extras. Do you know why mybtccoin pool the hash rate is varying?

### Reply 9:
Hello please i need help, a miner is not working the other ones are. The avalon 6 led light is blinking red, i disconnected the miner and connected again, it starts with a white flash light, then it goes blinking green for some time, then it turns off for a few seconds, then it follows a red blinking light.The miner is not detected in the user interface.

### Reply 10:
what are your power supplies? flashing red means power is high.read my burnt thread.<link> let me know what you use to power the gear.

### Reply 11:
Lol, thanks, I figure out what was. The fan has a false contact, so is not picking up the fan. I fix it with tape. That's why it was on red because the miner couldn't pick up the fan signal. Thanks anyway.

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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""rasp PI"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""four pin daisy chain wire"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB adapters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""unpowered hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""data cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supplies"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  }
]"
23438,"Date: 2021-02
Topic: Is this a bargain? Need help recognizing miner!
### Original post:
I just got an offer to buy some used ASIC miners for a very good price, possibly.The Person selling them told me that the name of the miner is M3 v2.9. I did a bit of research and found out that the MicroBT Whatsminer M3 is also called M3 v1 and the MicroBT Whatsminer M3x is also called M3 v2.But I can't find anythng about a miner called M3 v2.9! Can anyone help me?

### Reply 1:
Because there is probably no miner named M3 v2.9, there is only M3 and M3x which some people call M3 v2, this could be some modded miner with some weird brand based on the M3x, a bit overclocked with an extra 1 or 2 terahash, there is plenty of such gears in the Chinese market, the other possibility which is more likely is that your source is a scammer.

### Reply 2:
In theory and based on the current figures you shuold be able to make a net profit of $75 a month per miner, which means ROI will be 2 months, which is just about perfect, but since these numbers do change, you would never know, however, $150 is indeed a great deal given the fact that they go above for above $200 in China.

### Reply 3:
Hey, thanks a lot for your reply! I'm going to meet up with him soon so I will get more information. I'll share it here.Normally I would think that this is a scamer too but in this case I'm pretty sure he isn't because it's a deal I got from a ministry in my country. The person was mining bitcoin without a license and stealing the electricity so he got a fine he now can't pay and is offering me the miners if I pay his fine.If the miners were to be Whatsminer m3 or m3x would $150 per unit be a good price? Electricity over here is about $0.04 per kW. My calculations said I would be making about $2,600 a month with 60 machines.And even if everything goes wrong with the 60 machines I would be able to get a mining license and buy more asic miners from more reliable sources later on. So I think I should take the deal.What do you think?

","[
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    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""MicroBT Whatsminer M3"",
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  },
  {
    ""hardware_name"": ""MicroBT Whatsminer M3x"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""M3 v2.9"",
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  },
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  },
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    ""hardware_name"": ""m3x"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic miners"",
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]"
4112,"Date: 2012-06
Topic: Verilog help for a VHDL guy: sha256_pipes2.v fails to build under quartus
### Original post:
Howdy.I'm trying to build mining firmware for one of my altera fpga boards based on the ztex firmware. I'm targeting a cyclone3 as it is what I have to play with. I'm using the latest ztex firmware <truncated> that is unmodified save the top-level. I'm getting build errors in the sha256_pipe2_base module.I know enough verilog to be dangerous but not enough to figure this out any time soon.I am hoping that someone else has run into this (porting to an altera device) before.Does anyone have an idea of what's going on and (hopefully) how to fix it?Thanks in adance!-MartyHere's the error message:Code:Info: <truncated> Running Quartus II Analysis & Synthesis Info: Version 11.0 Build 208 07/03/2011 Service Pack 1 SJ Web Edition Info: Processing started: Thu Jun 14 23:16:17 2012 Info: Version 11.0 Build 208 07/03/2011 Service Pack 1 SJ Web Edition Info: Processing started: Thu Jun 14 23:16:17 2012Info: Command: quartus_map <truncated> <truncated> c3_miner_usb -c <truncated> Parallel compilation is not licensed and has been disabledError (10170): Verilog HDL syntax error at sha256_pipes2.v(89) near text ""[""; expecting ""}""Error (10170): Verilog HDL syntax error at sha256_pipes2.v(89) near t<rest of post truncated>

### Reply 1:
Your probably just missing a ""}"" before line 89 and its screwing up the rest of the bracketing. Have you tried to compile for the normal ztex target spartan6 lx150?

### Reply 2:
Good idea. I just built the same source files using ise. No strange compile errors there. This problem does seem to be specific to quartus.Any other suggestions?

### Reply 3:
Try replacing all instances of ""{x}"" with ""x"" or ""(x)"" in the ""`define""-s.

","[
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    ""hardware_name"": ""altera fpga board"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""cyclone3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""spartan6 lx150"",
    ""hardware_is_owned"": false
  }
]"
10771,"Date: 2018-10
Topic: GekkoScience Compac BM1384 Stickminer Official Support Thread
### Original post:
Great job, novak!

### Reply 1:
Awesome! Cant wait till mine arrive

### Reply 2:
I can't wait to try mine once they arrive.

### Reply 3:
Nice I will set up one of my 2 sample sticks on bfgminer today

### Reply 4:
I need to try the same thing. I currently have it working perfect with cgminer. But am interested in trying bfgminer for fun.Congratz on making it this far on a product. I still hope to see even more products from GekkoScience.

### Reply 5:
The sample sticks won't actually work with BFG or cgminer-gekko. The new softwares use our modified manufacturer and device strings in the CP2102 (that's the hex files Luke-Jr provided) to ID the sticks uniquely from other devices. The Icarus driver doesn't really do that; it sends work in specified formats and parses the response, compares it to known formats and assumes it knows what miner is running based on that. This is why the stick will ID as a U3 in stock cgminer, because it's the closest matching device that cgminer knows how to work with.The test sticks have not been updated to the proper hex, so the CP2102 will still ID with stock details. BFGMiner will not recognize it at all, and cgminer will still think it's a U3.

### Reply 6:
Info is helpful thanks as I saved time .

### Reply 7:
I added a couple lines to address the points Phillipma made. Phil, can you run on/build on linux? If so I might have a version just lying around with the ramp initialization but not checking for the serial number or product string. If you want I could just post it for you to test your samples with as you seem pretty eager (I think your sticks should be in the mail today though so the wait is coming to an end anyhow).--novak

### Reply 8:
My software skills are pretty weak.Not a big deal as the new ones are coming.I also have a house full of pcs and or macs.So when the new ones come I will setup one with the bfgminer and one with the new cfgminer.As for running Linux I should learn, but most likely I just do not have the time.

### Reply 9:
Happy to be part of this awesome project!

### Reply 10:
That's fine I just wasn't sure if you had a pi or something that you could build cgminer on- thought I'd offer.If you have any trouble with the cgminer let me know, this is my first time making my own driver for it. As for everything you'll need zadig on windows. --novak

### Reply 11:
TY sidehack and novak!came nicely and safely packaged.I'll play with it later tonight!<link>

### Reply 12:
Should work fine, just won't autodetect. So you'll need -S compac:\\.\COM1 (or whatever; compac:all is fine too).

### Reply 13:
I like the all green looks pretty sexy. Everything from PCB to heatsink.Thanks for posting closeups of final product.

### Reply 14:
NPI just posted them hoping that it would motivate a few people on the sidelines.

### Reply 15:
OK I'll be that guy...have no idea how to set up a usb stick so.....if someone could point me to the dummy directions I'd appreciate it be step by step ....my first ASIC was a plug and play KNC Jupiter 550gh ....so never had to learn any of this stuffto top it all off I'll likely run them on a Unbuntu machine(s) (which i just run putty.exe on) so them skills are lame to (the 2 laptops monitoring with putty.exe my Titan(s))(there is always that one clueless guy ..yep its me) lost in the cornfield maze need a search and rescue team

### Reply 16:
If you want to run the sticks on linux, you'll need either bfgminer or cgminer. Either way you are probably going to have to compile them, but I've had little trouble with this so it's probably just a matter of running a few simple commands.Here's what you'd do to get cgminer on linux going:1. Open a terminal.2. wget <link> This downloads the file- you can save it from your browser instead, it's the same thing.3. tar -xvzf <truncated> This extracts the files. which are compressed (like a zip file for linux)4. cd cgminer-gekkoEnters the cgminer-gekko folder you just extracted.5. sudo apt-get install build-essential autoconf automake libtoolYou need to install the dependencies for cgminer.6. ./autogen.shThis will generate a configure script for you which will set up compiling for your system.7. ./configure --enable-gekkoThis will configure the build. This is the most likely place to have anything go wrong, if it does, let me know exactly what's up. Odds are it would be some package that you should have installed.8. makePerforms the build. If you get an error there- again, let me know details.You are ready to run cgminer. This should look something like:./cgminer -o <truncated> -u <tr<rest of post truncated>

### Reply 17:
Thanks Novak, I'll try loading cgminer-gekko up on the Pi today after work.So hopefully by the time the sticks arrive, I'll have the hub and everything else ready, then all I have to do is plug, tweak a little, and play

### Reply 18:
Got 2 sticks yesterday I haven't tried high se<rest of thread truncated>
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    ""hardware_name"": ""CP2102"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Titan(s)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""usb stick"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Pi"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""hub"",
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]"
11321,"Date: 2023-06
Topic: bathroom floor heating trough watercooled miners
### Original post:
I am getting my bathroom redone completely.I own a total of 4 water cooled S5's and a C1 for which I'm fixing a radiator system.Since I like not tot waste the heat completely, how doable do you guys think it will be the get floor heating on my new bathroom?I first thought of just the C1 as a permanent heater with it's 360 rad. But the floor acts al a big rad aswell 5 m2.So if I have 5 m2 as radiator my heat will be distributed trough some pipes and up through the floor.better temps for miners?nice heated floor bathroom?also a temp controlled switch could be made when it gets to hot it will activate my radiator cabinet on the balcony.....just a idea as I am almost finished with my radiator cabinat which will be on the balcony to avoid sauna temps.wath do you guys think? Just get the contractor onboard and go for it, seems like he will...I have about 4 week before he could start.I need to have a backup plan to add normal floor heating source or whatever in case I sell my appartment.Really love to hear some opinions on this.No roi bitching, please

### Reply 1:
I think it's a great idea, always seems such a pity that ""Miner Heat"" is treated as a problem rather than something to be made use off. I have a conservatory with underfloor heating that has never been connected and have been thinking along similar lines.A issue I have considered but not resolved in my mind is do you just directly pump the Miner fluid through the underfloor heating pipes or do you use a heat exchanger and keep the mining & underfloor systems separate? I lean towards using a heat exchanger which might also make coping with selling easier. In my case I would then just couple the heat exchanger to the main central heating system.Will be interested to see how the project progresses.Rich

### Reply 2:
I don't know if it will be a real project.just some idea popped in to my mind seeing an unused c1 in the bathroom.I am looking for some experts opinion on it if it will be doable.Also just finiched my sick radiator cabitnet.And I am building a bong tower cooler for even better cooling.So if the floor gets to hot a switch could send de fluid to the system I originally had in mind.

### Reply 3:
with radiator like that, what about the miner temps? still high or?

### Reply 4:
That is a huge area with fans on radiator. Thanks for sharing I have not seen anyone go to this level before.How many do you think you will be using with that? Also with running through floor and miners what coolant are you going to use?

### Reply 5:
I think it's a good idea to use the heat to but....You are talking about 3200 watt for your bathroom. Now you can make a buck. But in two years ore less you don't with your S5 set up.And don't know much about bathrooms. But maybe a bit expensive over a period of 10 years.

### Reply 6:
these radiators where for my 4 s5 + c1 and looking to expand in s5's, as ik will set it up on a balcony and winter is commming.....I will have to many cooling and my miners will have to be overclocked to keep them warm As far as the batroom heating goes normaly it would be connected to the radiator or central heating ststem, it think that is just water.

### Reply 7:
s5 about 50 - 60 overclockedc1 30 will crap if overclocked

### Reply 8:
No roi talk, is not relevant in my situation. and as backup it schould be able to connect to the radiator in the bathroom.I also dont know anything about bathrooms and or floorheating

### Reply 9:
you should not go too high! higher than 30C at floor level means all the dust will go up and the stress of the materials caused by temperature might be too high!

### Reply 10:
What coolant do you use for this? Do you use coolant for electrical equipment? Or is it something else since you would need a lot I'm guessing.

### Reply 11:
I use coolant now, but if my bong water cooling tower is in place.I think I must use water to evaporate...If the floor gets to hot, some system or switch should activate either my radiators and or bong cooling.The normal bathroom heating my parents have is connected to there warm water radiator.That would only be necessary if I sell my apartment or if bitcoin dies.

### Reply 12:
I am going to the hardware store tomorrow who specialize in heating, floor heating and get some more info.Main thing is miners stay as cool as possible and bathroom floor gets some heating form otherwise wasted heat. I allready have more than enough cooling.That is also why I am seeking cheap s5's for this water cooling project.or somebody should make an S7 water cooling kit.... I have 1 s7 with outside air of about 12 degree Celsius and a mini titan for home heating And maybe I get 1 more s7 if bitmain fixes there shipping issues.But than the place would be like 25+ degree Celsius

### Reply 13:
I like it better than a radiator! but hopefully the floor is sucking more heat. From what i remember, the temp of the floor should <rest of thread truncated>
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22385,"Date: 2018-02
Topic: NOOB - Have I understood correctly?
### Original post:
Hi Everyone!I am thinking about jumping on the Bitcoin train as its leaving the station...From my research it seems I need;Antminer S9 (or multiple)AP3++ PSUUK Kettle LeadEthernet CableJoin a pool (Slush Pool?)Mining Software (BFGMiner?)A wallet (?)I assume I plug the Ethernet into my Router and then connect to the unit via IP address to install software or is the software install on my laptop?Is that is? From what I've read its fairly automatic, plug it in and away it goes.From what I understand I need to factor in high energy usage, big upfront layout for hardware and the risk of the market for BTC crashing? Anything else I have missed apart from difficulty increasing?Thank you for reading and any replies.

### Reply 1:
Hi ( you drive on the wrong way of the road ! ) You have all right except the good news you don't need a miner software as it is include in the miner S9. ( plug and play ) You just need to set one page on the miner dashboarb about the pool, a lot of tuto are available, and slushpool is a good choice as it is clear and easy.You connect to the miner with your browser, using the ip you took from a litle free software that scan ips, OR you can just catch it from your router ( what I do ) where you see all the devices connected.( it will be called antminer ) Et voila...

### Reply 2:
If you decide to go with multiple miners, make sure you have planned your power requirements properly. Miners use a lot of power and need adequate power feeds. Also plan for dealing with the noise and heat, these things generate a lot of both

### Reply 3:
Thank you both for your helpful replies.Regarding power, do they not simply plug into a normal outlet? Obviously I wouldn't be plugging 2 or 4 into 1 socket with an extension lead.I assume I just have to put up with the noise and make sure the room is at a nice temperature, not to hot or cold.Biggest question is can I buy it safely from eBay or is it best to always buy direct from bitmain and wait for their next available batch?

### Reply 4:
The APW3++ power supply you mentioned requires 220V power, not 110V. It will start with 110V, but will not provide the required wattage to run all 3 cards on the S9. Don't underestimate the power draw, the associated heat, and the noise. Think of them as space heaters on high with the sounds of a bad vacuum cleaner running. The space heater analogy is actually pretty close, except that most space heaters draw a little less power!e.g. If you put one of these things in a bedroom without ventilation, your going to create a dry sauna within hours, and cook your investment.Bitmain vs. Amazon/E-bay is a risk/reward issue. You will only get a (semi-worthless) warranty from Bitmain. Their warranty's are not transferable through 3rd parties (e.g. You need the unit serial number AND the order number for them to honor the warranty. ""semi-worthless"" because you need to ship the unit back to China (California if your in the USA), and potentially be without it for 3 months while its <truncated> I only buy from Bitmain. While you wait for your delivery, go out and buy a cheap 1300+ watt space heater (like at $39 one), and figure out your ventilation needs.

### Reply 5:
Yes he's right, and buy from bitmain, AND you can buy too to some people, who are tired of the noise and the heat of the miner.I did.I've seen a lot of s9 sold in UK from ebay, sure you will find them on...euh...?! ( I don't know how you call it in UK, like craig list in US I think ?! ) and buy them directly. good luck.

### Reply 6:
On first read you have more or less all you need, but you have to consider a bit more things bevor investing in several S9 in my opinion.- As allready mention the power consumption is high. About 1350 Watt per hour. While this is not such a big problem if its only 1x S9 it is when you want to setup several at home. Let's say you want to have 5, makes ~ 6.750 Watt per hour and not all home circuits are fit for such usage, having in mind you use other electrical items too. Have as well in mind that you electricity bill will come in most cases bevor you cashed out whatever. 6.750 Watt per our, 24 hours a day, 7 days a week, due the math how much you bill will be monthly.- Allready mentioned, heat, S9's are the hottest of all i have so far. Coolest i get them without much afford is 60C, if you are not ventilated they will go easy over 75C in no time. No idea where you live and what temps are there in summer, but have in mind that temperatures over 80C in the S9 are critical. While in the first 15 minutes you might think the hot air is ok to heat your home, this will change in latest 1 hour later, lol, when you feel like in a sauna. - Beside that, the noise. Do not underestimate the noi<rest of post truncated>

### Reply 7:
Anything around 70-80c is actually pretty decent for S9s considering how they're designed and they're capable of hashing around or over 100c for extended<rest of thread truncated>
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11333,"Date: 2023-07
Topic: Choosing the Best Bitcoin ASIC Miners in 2023: A Deep Dive
### Original post:
When it comes to Bitcoin mining, the choice of equipment can be crucial for profitability. ASIC miners, in particular, have risen to prominence in the Bitcoin mining industry due to their superior power efficiency and hashing capabilities compared to other types of mining hardware. In 2023, various ASIC miners compete for attention in the market. However, the selection process can be complicated, considering energy costs, miner prices, and efficiency ratings.In this blog post, we are going to analyze four major Bitcoin ASIC miners available on the market:Bitmain Antminer S19 XP 141 TH/sBitcoin Miner S19J Pro 122TWhatsminer M50 120THBitmain Antminer S19 90 TH/sBitmain Antminer S19 XP 141 TH/sThe Bitmain Antminer S19 XP is a cutting-edge miner with a hash rate of 141 TH/s. Its high hash rate makes it a power horse for Bitcoin mining, suitable for miners looking to generate a significant return, power usage is 3000watts. However, it also means that efficient machines will be most expensive per th/s, hence more considerable operational expenses in terms of energy costs. This could protentional increase your ROI time.The key to assessing its value is to weigh the initial acquisition cos<rest of post truncated>

### Reply 1:
I'm in Europe, and I thought, ""Great! I'll be able to avoid some taxes!""So I took a look at your reputation. As a result, I'm thinking of keeping my Shenzhen contacts for ordering ASICs, and paying taxes instead, which seems less risky to me.With this kind of reputation, and prices that I find very high, I'd rather pass.Examples of feedbacks related to your shop :

","[
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  {
    ""hardware_name"": ""Bitcoin Miner S19J Pro 122T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer M50 120TH"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S19 90 TH/s"",
    ""hardware_is_owned"": false
  }
]"
11816,"Date: 2012-02
Topic: CGMINER GPU FPGA overclock monitor fanspeed GCN RPC linux/windows/osx 2.3.0
### Original post:
New version: Version 2.3.0 - February 23, 2012Human readable summary:New kernels across the board, including Diablo kernel. Selection is carefully designed to be optimal by default according to device and SDK combination.Much better coping with SDK 2.6 so it no longer warns excessively about it, but note it's STILL faster with most cards on earlier SDKs.Fixed the huge dip in hashrate with all the extra longpolls.Fixed the number of extra longpolls during pool switch.Hopefully fixed the device OFF problem.Added Icarus FPGA support.Can set kernel, vector and worksize per device now with -k <truncated> -v 2,2,2,1 -w 128,256,256,64 for exampleHashrate at startup should be more meaningful sooner.New --benchmark feature to test hashrate. Leave it running for ~3 mins to get reliable results, then quit and check the summary! Great for testing multiple same devices with different kernels, vectors etc. Produces NO HASHES so don't leave it running Engine clock speed should ramp up instantly after a period of network outage which drops the profile to low power.New API commands for pool management.Fixes to API code to shut down cleanly.Full changelog:- Consider extra longpoll work items as stag<rest of post truncated>

### Reply 1:
Thanks for the update mate, but this version doesn't compile a bitalign kernel for my cards (5850's), it's the non-bitalign kernel which is much slower (~320MH/s vs ~400MH/s).Copying over the bin from the previous version and renaming it from <truncated> to <truncated> doesn't work also (HW failures).

### Reply 2:
Woah now there is nothing that should stop it compiling a bitalign kernel. It just stops CALLING it bitalign. You're not doing the SDK 2.6 dance are you?

### Reply 3:
Yeah, I just read the changelog carefully. Nope, no dance, jumping back to 2.2.7 immediately gets back to ~400MH/s (I always unpack each cgminer version to a fresh folder, no leftovers from prev vers). I'll try the other kernels to see how they go.

### Reply 4:
What does:cgminer -nreport? And what kernel .bin file is being generated for you by default?

### Reply 5:
Unless you can say ""Nope, no dance, I don't have SDK 2.6 installed"" or ""Nope, no dance, jumping back to a fresh install of 2.2.7 that compiles a fresh kernel immediately gets back to ~400MH/s"" you are probably doing the dance. Most people doing the dance don't know it.

### Reply 6:
ck, if you can give me a hint as to how to compile a 32-bit version on a 64-bit linux machine, I can provide cypress kernels for l4 along with l8 from SDK 2.1.

### Reply 7:
Cannot do. You can only make 32 bit kernels from running on 32 bit OS I'm afraid.

### Reply 8:
The cgminer window closes really fast on Windows, you really need to put an #ifdef win getch() at the end of execution, since piping the output doesn't work either Anyway, by a screen grab, it shows Platform version: OpenCL 1.1 AMD-APP-SDK-v2.5 (793.1), with 1 platform device (GPU 0 ATI Radeon HD 5800 Series), and my settings for engine (970) and mem (150).The default kernel is <truncated>

### Reply 9:
Now that's a serious groaner since the phatk kernel is only trivially changed it should not perform any differently Try -v 2 -w 256 since you're grossly underclocking memory.If you start it from a dos prompt window the window won't close...

### Reply 10:
V2w256 is what I always use to get the ~400MH/s, but it seems to hover around ~320MH/s now. Gonna let it run more time and see if the stats change.I did start it from a dos prompt, but it creates a new (console) window and closes it after it's done. Piping the output like ""cgminer -n > report.txt"" doesn't work either. Windows really sucks on these small things :S

### Reply 11:
I now have one 5850 running cgminer 2.2.7 and another on 2.3.0, on the same engine/mem clocks. I'll be counting the accepted shares on the pool they are connected to and see if there is a significant difference. Cgminer 2.2.7 is reporting ~400MH/s and 2.3.0 is reporting ~320MH/s atm. At first glance, it seems they are submitting the same amount of shares (39 vs 40), so this could just be a ""cosmetic"" change in cgminer 2.3.0.

### Reply 12:
That, unfortunately, does not make sense... and this hashrate drop is more than a little disturbing since there is no real valid explanation for it.edit: it's so big it's like one has an intensity set and the other is running dynamic.

### Reply 13:
Yeah, you're right, it was just wishful thinking... The one on 2.3.0 has a U:4.22 vs 2.2.7 with U:5.35. Both are running at I:9.

### Reply 14:
My 6770 runs waaaaaaaaaaaaaaaaay faster with the diablo kernel.I was reliably getting around 185-190 Mhash/sec with poclbm and phatk. Now it's reliably around 202 with diablo. Really noice!I did notice that suddenly my poclbm performance dropped from around 185 to like 165 with this new release. But I'm not complaining because of the pleasant diablo su<rest of thread truncated>
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU 0 ATI Radeon HD 5800 Series"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""6770"",
    ""hardware_is_owned"": true
  }
]"
13536,"Date: 2016-11
Topic: Networking in a simple beginner miner
### Original post:
Hi everyone, I am starting with bitcoin and want to build a very simple miner in c/c++, with use of my own sha function and block building. However I am looking for something that would help me with the networking part, is there a library or other tool that would help me with this?

### Reply 1:
Why do you need to re-invent the wheel?<link>

### Reply 2:
Because I want to write it on my own, and also this is to use with some usb devices and I am not going to use any.

","[
  {
    ""hardware_name"": ""usb devices"",
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  }
]"
17047,"Date: 2012-02
Topic: What SDK and drivers for 5870 in cgminer?
### Original post:
Currently I'm getting only 404 m/hash on my 5870 in cgminer with 990/350. I know I should be getting much higher, but I'm not sure what SDK and drivers are needed. I know I remember reading about this before, I'm just not sure where.

### Reply 1:
From what I've read posted by others, SDK 2.1 is best for 5xxx series.As for what version of drivers, possibly one of the Catalyst 11.x versions. I'm using 12.1 though with SDK 2.1 and my hash rates seem to be fine.

### Reply 2:
Can anyone confirm this? Is it as simple as downloading and installing SDK 2.1 or is <truncated> of other files needed?

### Reply 3:
Here's an old post of mine where I asked a similar question when I first started into bitcoin mining (which wasn't very long ago):<link> here is the download page for the older versions (official AMD site):<link> read that you have to go to the CCC setup and tell it to remove the older SDK but the very first time I just installed SDK2.1 and it worked for me so YMMV.Once you get the SDK program, open it using something like WinRAR and go into <truncated> and run <truncated> to install SDK2.1.I went from getting like 650-700 mhash/s to 750-800 mhash/s on my 5970 by doing so. Other people posted in my post saying that it helped them too. There's a pretty big consensus from what I've seen that SDK2.1 is the go to version for 5xxx series.

### Reply 4:
Can I just go to CCC setup --> Uninstall, then install SDK 2.1?

### Reply 5:
I believe you can uninstall whatever version of SDK you currently have by going to CCC then uninstall.But for whatever reason, you'll have to go into open up the SDK2.1 package as an archive and go to the specific file to install it. Don't ask me why since I don't know but I'm guessing that there's a reason why I was told to install SDK2.1 that particular way and it worked for me and others apparently.

### Reply 6:
Thanks! Can anyone confirm this? I'll try it later.

### Reply 7:
I thought you had to manually delete (or rename) opencl.dll in system32. Uninstalling the sdk doesnt get rid of it, or so I heard. Easy to check, if after uninstalling this dll is still there, get rid of it before installing 2.1Also be sure to let us know what results you get. My best 5870 result on sdk 2.4 is ~461 MH/s @ 1000/170. Havent tried 2.1.

### Reply 8:
Beats me, you're probably right. Personally I had no issue though when I just installed SDK2.1 without deleting any .dll files and I definitely noticed an instant improvement in my hash rates.Was running Windows 7 64-bit if that matters any.Is there a way to check what version of SDK2.1 is being run at the moment? I recall reading that there might be but didn't really ever find out. Will look into that in the meantime.

### Reply 9:
So, it seems the steps I need to take are:1) Go to CCC setup --> Uninstall2) Check to see if opencl.dll is still in system 32. If it is, delete that.3) Download and install SDK 2.1 (or sdk 2.4 if sdk 2.1 doesn't work)4) Reap benefitsYay or nay? BTW im running cgminer 2.2.1 on win 7 64-bit

### Reply 10:
5) post results.edit: important. Delete (or move/rename) the BIN files in cgminer folder! They are named something <truncated> you dont remove them, nothing will change, they contain code compiled with the SDK you had when you first ran cgminer.

### Reply 11:
Pardon my ignorance, but if I delete the BIN files in the cgminer folder first, will I need to replace them with something else after I install SDK 2.1?I will def. post results.Edit: It sounds like you're saying that if I delete the BIN files, install SDK 2.1 and run cgminer, cgminer will compile new BIN files.

### Reply 12:
No, cgminer will recreate them when they are not there. Rather than deleting, back them up.

### Reply 13:
Looks like it's settling ~451 m/hash at 990/350 with i=9 voltage = 1.13 running at a cool 53.5C with 60% fanAn extra 50 m/hash ain't too bad at all Thanks for the help!Edit: Copied the old opencl.dll and the old BIN file to a USB stick, just in case.

### Reply 14:
You can do better. Try lowering your ram speeds. See here:<link> those results were obtained with 2.4 SDK, I assume you have 2.1, so no guarantee how they will carry over, but I would love to find out. 2.1 is supposedly faster than 2.4.

### Reply 15:
I found that changing the memory clock often makes the driver crash. Its not the speed, its the changing.Best bet is quitting cgminer, change the values in your config file, wait 10 seconds or so, then relaunch cgminer.Doing it on the fly from within cgminer, or changing too quickly quite often it would crash, even at speeds that are completely stable otherwise.Note: I am doing this on a dedicated linux rig, I have no idea if running windows and Aero spoil the fun, but it could.

### Reply 16:
Dropping mem to 170 seems to give about 456 m/hash with core at 990. About a 5 m/hash boost for me.

### Reply 17:
So thats exactly the same result as I got with 2<rest of thread truncated>
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10925,"Date: 2021-01
Topic: I am thinking of a contest. Convert an S-1 into a space heater.
### Original post:
deleted old thread clean up

",[]
14553,"Date: 2012-03
Topic: Who in the world is 95.120.241.167?
### Original post:
Seems that in the last 24 hours, almost 10% of the shares (an estimated 1.2TH/s) went to this IP address. The holder is unknown - blockchain.info at least associates it with no public pool.Anyone know what's up here?

### Reply 1:
Looks like it's from spain. Interesting. What are the electric rates in Spain?

### Reply 2:
Any big pool ip disappeared? might be a changed ip address.

### Reply 3:
Deepbit, Slush, Eligius, Guild, Eclipse, Oz... all of them are still on the pie.Certainly nobody able to throw around over 1TH/s has dropped off the map.

### Reply 4:
What does the ""relayed by"" mean anyway?Isn't it just the node in the bitcoin p2p network who was the first who told blockchain about the new block when discovered?

### Reply 5:
I went through the last 5 blocks found by that ip and they all mined to a different <truncated> that this means anything, but if all mined to the same ip it would very strongly imply it is the same miner. Now it proves nothing (the miner could still be generating a fresh address for each block).

### Reply 6:
<link> Spain.My god, no one can reach 1,2 TH. Or it is a server admin...

### Reply 7:
I think he succeeded.

### Reply 8:
Interested to know as well. Does Beelzebub like heat?

### Reply 9:
Definitely a miner to keep an eye on.

### Reply 10:
Small calculation,4 days * 24 hours/day * 6 blocks/hour = 576 blocks per 4 days.41/576 blocks = 7.12% of total hashing power of the network.Impressive :-)

### Reply 11:
They have been around for a while. Probably a semi-private pool for some big producers. It's a sticky dynamic IP from Telefnica de Espaa, which is the largest fixed phone and ADSL operator in Spain"", they have a /16 of IPs for subscribers.Bonus points if you can find their Bitcoin port or a web interface; they haven't found a block for a while and aren't connected to blockchain.info right now.Here's the address where most of the generates were being sent through...<link> now scattered to dozens of addresses..Reminds me of mystery miner, or another big <truncated> < ArtForz> yeah, I'm down to 1250btc/day15:12 < ArtForz> at least until my next 12 5970s arrive

### Reply 12:
2012-Feb-3015:12 < Beelzebub > yeah, I'm down to 1250btc/day15:12 < Beelzebub > at least until my next 1200 ASICs arrive

### Reply 13:
Artforz has been in this position before:<link> likely in it again.

### Reply 14:
Eventually there won't be enough profit in it and mining will be done by those who have high transaction volume.

### Reply 15:
Bitcoin mining will evolve to a market where it's not just about transaction volume. Some miners will ask for a higher fee and some for a lower one. The ones who ask for lower fees get higher volumes but have a smaller profit margin and vice versa.My point is that some miners will survive even without high transaction volume if there are enough users who want to pay a higher fee to make sure their transactions will be included in the next block.To znort987 and others:Personally I don't believe Bitcoin mining will ever become excessively centralized, for many reasons. One of the reasons is that some of us have fixed electricity costs, it's almost impossible for any large scale operation to make mining with fixed electricity cost non-competitive. It is not realistic for a large mining operation to be able to mine that cheaply even if they manage to somehow acquire the hardware itself for cheaper than the regular joe. In Finland there is often a fixed electricity cost (included in rent) for student apartments, but those are usable for small mining operations only. You have to also take into account that many small time miners do not have any extra costs for the space, cooling systems <rest of post truncated>

### Reply 16:
A bigger problem for Bitcoin, by a magnitude of 100, is the centralization of mining pools. That is in my opinion way more significant than worrying about the centralization of mining itself. I have seen tremendous development in this area though, Deepbit is much smaller now than it used to be and we have innovative new pools such as p2pool which has been very successful.I'd say the future is looking bright.

### Reply 17:
Feb 30, huh?

### Reply 18:
Yes, it was on purpose

### Reply 19:
Maybe its a bunch of nerds in spain funneling all their comps gpu power through one account? IDK im just a noob

### Reply 20:
It would have to be in the ballpark of 3000 GPUs to achieve this hash rate.

### Reply 21:
botnet? fpga/asic rig placed inside the <truncated> vortex produced by UFO's engine? I've ran out of options here =)

### Reply 22:
Very related thread: Wonder who this solominer is? 88.6.216.9(Also from Granada, Spain)

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    ""hardware_name"": ""GPUs"",
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    ""hardware_name"": ""FPGA/ASIC rig"",
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10099,"Date: 2016-12
Topic: Question about mining hardware
### Original post:
Is it possible to reprogram preexisting hardware such as an antminer s6 to work with other currencies?

### Reply 1:
1. There is no such miner as Antminer S6.2. Yes, they can mine any SHA-256 cryptocurrency.

### Reply 2:
But you have to weigh up the cost of actually mining a different sha256 coin as most aren't worth mining as that aren't worth that much. But if you're not worried about profit and doing it as a hobby then go for it.

### Reply 3:
any experience with zcash? would I know it uses a different hash algorithm, would it be worth it to even use ACIS or FPGA hardware with that hashing?

### Reply 4:
Personally I've never looked into zcash. If it doesn't use an algorithm which someone has already produced an ASIC for then you'll have to use GPUs, which means you'd get more help in the altcoins section

### Reply 5:
I think you need to look into how the coins work a bit more. there are different methods to mining, not all miners or mining methods work on all coins.Sha256 is what the asic miners will mine. GPU is used for others. etc.

### Reply 6:
Zcash has a different algo that's only supported by gpus for now and it's price is steadily dropping. Block reward is linearly increasing but it's likely that the coin will only be viable for a little while. I'd suggest XMR and ETH (4GB gpu as DAG is growing) if you're new to the scene. ASICS are generally only for X-based coins and Quark as well as Scrypt and SHA256. This is basic info and more can be found here as well as on other sites. Make sure your electrical cost is below 0.1$/kwh first, else you won't make much mining.

### Reply 7:
Asics cannot be reprogrammed. They are capable of calculating a single algorithm...with the exception of that baikal miner and any FPGA's, you can reprogram the controller by pointing it towards a different pool via command line or IP connection.You can mine anything that is compatible with the asic's predetermined algorithm.Once you figure out how to run your asic...please be careful and do your own research

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    ""hardware_name"": ""Antminer S6"",
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    ""hardware_name"": ""ASIC"",
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    ""hardware_name"": ""FPGA"",
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  },
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    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Baikal miner"",
    ""hardware_is_owned"": false
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14528,"Date: 2012-02
Topic: Any Miners in NYC?
### Original post:
Just as a friendly heads-up: remember to meet in a public place (at least the for the first trade), and make sure sure you wait for at least one confirmation to eliminate the risk of the person pulling a Finney Attack on you.

### Reply 1:
What's a Finney Attack? Sounds nasty - does it involve a knife?

### Reply 2:
Basically, the person generates a block in which they move all the bitcoins from address A to address B, but they don't broadcast it to the network. Instead, they make the transaction with you, where they send you the bitcoins for the trade, also from address A.As soon as you accept the 0-confirmation transaction, they broadcast the block, and that transaction takes precedence because yours wasn't included.This has only gotten worse lately, as the attacker can purchase a ton of hashing power temporarily for that one block using a service such as GPUMAX.Long story short: don't accept 0-confirmation transactions. Ever.

### Reply 3:
have you contacted <link>

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22288,"Date: 2018-01
Topic: Connect to eBit-E9 Wirelessly
### Original post:
For some reason, the only way I can connect to configure my eBit miners is if I setup a separate network on a spare router and hardwire the miner and PC to the same network. Once configured, they hash happily on my normal internet connected network. If I need to reconfigure them, I need to reconnect them to my solo network. I am I missing something or is this normal for the eBit miners? Has anyone been able to wirelessly access the configuration on these machines?

### Reply 1:
As far as I know they don't accept wifi connections.Did you setup the machine for DHCP, or are you using a static IP?

### Reply 2:
It is using DHCP. Again, when I hardwire the E9 and my Laptop into the same solo Network, I can access the admin console. Once I configure it I plug it into an IOGEAR Universal Ethernet to Wi-Fi N Adapter which is wirelessly connected to my 192.168.1.x network but cannot connect to the admin <truncated> WORKING! Perhaps I was being too impatient. It seems that after 24 hours, I can see the eBit's on my 192.168.1.x network and can wirelessly get to the admin console. Giddy-up! Getting this working wasn't a show stopper since I had a hard-wire work around. It's nice to have the convenience of not having to create an adhoc hard-wired network to get to the admin console when I need to!

### Reply 3:
Worth a shot!(Scurries off w/laptop and Ethernet cords)

### Reply 4:
I need help I have tried all that and I still cant connect. Questions I have for you 1. What type of Spare Router you used?2. Who is your Internet Service Provider. I use comcast who uses 10.0.0.1?3. What were your exact Steps?4. Do you live on the East coast I will gladly pay you to configure my 5 miners. 5. Thank you and hope to hear from you soon.

### Reply 5:
I also am having trouble connecting even wiring direct to the router.Does anyone know how to get into the Ebit in the first place?

### Reply 6:
I don't know if this is relevant but I've recently received a couple of E9+ and couldn't access. They were not showing with any ip scanner. If you have the same problem... hold reset button for 30 seconds and release. It will reboot and then will show up with any ip scanner. You will have to put the speed back up to 750 PLL as that will also reset to 600 and only run at 7THs or so

### Reply 7:
for the first time you get ebit they put static ip to configure that machine is very hard but simple if you have the right tool ...after that you must plug you eth cable since they not accept wireless for configure after that run ebitminermini and find lan and change scan the ip that it .. after that open the angry ip and scan .. walla you get the ip

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    ""hardware_name"": ""spare router"",
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    ""hardware_name"": ""PC"",
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    ""hardware_name"": ""Ethernet cords"",
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    ""hardware_name"": ""E9+"",
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]"
24073,"Date: 2023-01
Topic: new to mining, do this idea make any sense?
### Original post:
Hi everyone, new to mining. I am preparing to start my little adventure, know about btc but not much about electronics and calculationsI have 1.5/2k usd to invest in a btc asic miner, new or used. I was thinking about a used antminer s19 or 2 new L3+, suggest me please considering energy efficiencythen i have a limited amount of free electricity (up to a certain level) given to me by a family person, i estimate 100 kwh per monthI am in just to accumulate satoshis, so not to sell it in order to repay the hardware or billsdo all this make sense? thanks

### Reply 1:
L3+ is not a Bitcoin miner its an altcoin miner if you are looking for efficiency use some tools to find the right unit for efficiency.Try this one <link> I think you can optimize any units for efficiency but you will need to switch them to modded firmware like asic.to and braiins OS.

### Reply 2:
The Antminer S19 is a good option for your budget and is relatively energy efficient for its mining capabilities. However, purchasing a used miner carries a higher risk as it may have been damaged or may not perform as well, or as long, as a new one, so it is also important to consider that when making your decision. It may be a better idea to invest in a new miner to ensure optimal performance and longevity.

### Reply 3:
i'll buy it in real life, no internet so i can test it, is there a tool to test its conditions?

### Reply 4:
how much kw the s19 consume per month?

### Reply 5:
There's different variations on the s19 wattagewhen your looking for one use a calculator like this <link> to determine stuff.Keep in mind whatever numbers you audit on purchase probably won't be the same as when the unit arrives.Be careful when purchasing anywhere not just here.Use escrow if you buy here. Validate said escrow among your peers.Do your due diligence and research your potential seller so you dont get scammed. For example, if an eBay seller has a deal that's too good to be true, it probably is.Want to save a lot of time? Just Buy BTC.

### Reply 6:
Depending on the exact model and <truncated> it can pull from 2,5kW to 4kW, and that's without the fans.As mr pickels said, probably better to just buy BTC.

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22850,"Date: 2019-01
Topic: Help Needed. two Antminer S9 down
### Original post:
Oh no..... i am now getting the following when i try to rest flash firmware on the on e with the missing bmminer.Luckily the miner is still viewable via a web page and when i reboot it comes back up and i am able to update.Any ideas anyone ?Help

### Reply 1:
ok thanks will give it a go.Stupid arnt i !!!!Any suggestions re the ""bmminer issue"" as described above?

### Reply 2:
tried that . I can flash again on one miner, but not on the other one that was syaing it before. Weird.

### Reply 3:
Am up running. Thank god....For future ref and for anyone else having issues. Check your router. I have an ASUS router and i updated the firmware. It defaulted with a ""Two Way Intrusion prevention system"".. ON.I turned it off and the miners are back up and running.However, one of the miners will still not update with firmware. And i get the 413 error again. No tsure what this is, as i have reset my router many times now.I was going to mess around with it and reset to factory defaults then re flash. However, as it is running i am going to leave it as it is.It is running the <truncated> firmware and i suspect that if i hard reset and re flash with a lower firmware it might work.Either way.. main thing i am back up and running.

### Reply 4:
Found it! I think that may have been my issue!

### Reply 5:
Nice sleuthing, ben. I had a DD-WRT router that kept shutting off an ethos GPU rig, but I never saw a router firewall an ant before. Thanks for posting your resolution, I'm sure it will help people in the future.

### Reply 6:
Hi, got up this morning to find all of my miners off line. I have reset two of them but my two main S9's will not Hash. They simply show the socket connect failed. Looking on the forum i have reviewed my kernel logs for each machine. One shows the <truncated> not found= 1378 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found=21082 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found=21422 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 8513 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found= 8797 root 0:00 grep bmminerbmminer not found, restart bmminer ...bmminer not found=28373 root 0:00 grep bmminerbmminer not found, restart bmminer ...I have tried re flashing firmware to both and nothing is happening. The machine above is reporting as <truncated> Version THIS IS BLANK!!!!Kernel Version Linux <truncated> #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017File System Version Fri Nov 17 17:57:49 CST 2017Logic Version S9_V2.55i will post second machine kernel log in a post below.I have tried resetting both machines using the factory reset. Different types of firmware. etc Any ideas<rest of post truncated>

### Reply 7:
If you would like to leave intrusion on, you would just have to reboot your router every few days.

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17186,"Date: 2012-07
Topic: Vircurex auto-sell script, anyone?
### Original post:
Alternative blockchains are a blast, we all know. I mine some, and have for some time been selling them on Vircurex for bitcoins. They have a neato API, and I wonder if anyone has written a script (or program) to automate it, something along the lines of this pseudocodeif $altchain_balance >=0.01 sell for <truncated> noone has a script in that manner, I'll write one an publish here when it's done!

",[]
23506,"Date: 2021-03
Topic: PSU problem - need some ""insider"" info
### Original post:
So I have a few chinese Q3 miners (similar to A1, F1, etc) - one of the miners popped a PSU. I found a exploded MOSFET, replaced it, no luck.From my understanding the PSU has 3 inputs/outputs. The output for the control board still works. The high-power output to the hashboards is dead and there is another input or output (4 wires, separate connector from control board) that I can't identify.I'm ASSUMING its some sort of control for the PSU to turn on/off/PWM/??? <truncated> if I can just get a separate high-power PSU and feed the hashboards from that. The broken PSU can still supply the control-board (or just run it from new PSU as well)?Anybody knows how controlboards/PSUs interact? Out of the 4 wires, I got 1 ground, 2 voltages (3.88) coming FROM the PSU and 1 voltage (3.3V) going to the PSU.When I unplug the connector (on another miner) the miner powers down because it can't read temperatures of chips and also a LED goes on/off.So I'm figuring: 3.88V is the power supply for the <truncated> circuits (1 circuit for 2 chains, so 2 wires for 4 chains) and the outgoing 3.3V is the LED?Would mean I could run the miner on a ""regular"" PSU with a step-down for 3.88V for the temp-circuit<rest of post truncated>

### Reply 1:
Perhaps, but only if you know what voltage the hash boards run at. These days that can be anywhere from 14vdc up to 23vdc.One of the lines from the controller to PSU should be a control signal that adjusts the hash board vdc output to what the controller commands.

### Reply 2:
@op this is simple case of planned obsolescence. Once your bespoke PSU dies and the builder no longer sells that model your gear becomes a brick.Builders learned their lesson from the s9 and now have stopped making easy to replace PSU's.Good luck finding a replacement.

### Reply 3:
It would be helpfull to include some pictures from the dead psu, so we can see a bit more.The 3.88V could be anything, without knowing the origin of it. The Mosfet need a negative voltage (or a negative offset) so you should begin to draw some sort of schematic for fault finding.

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4255,"Date: 2012-12
Topic: Mobile car-based mining operation entirely possible
### Original post:
I'm been playing with the Raspberry Pi, which only consumes 4 or 5 watts of power, compiling cgminer on it, etc and combined with this little wireless adapter:<link> got to thinking - with the following you could run a totally mobile mining operation out of your truck or car:1. Android Phone running a wireless hotspot2. Your favorite USB mining device, 12 Volt input connected to a cigarette adapter. 3. Raspberry Pi running Debian and cgminer4. Cigarette adapter - to USB to power the Pi. You could be driving to Grandma's house over Christmas while mining the entire trip. Or a trucker who lives in his rig could mine.

### Reply 1:
Bear in mind that a vehicle's ""12 volt"" electrical system actually can vary from 10 to 15 or so volts. Powering your thousand-dollar miner by plugging directly into it may not be the wisest choice.

### Reply 2:
This. Those 12V DC card charges can have some of the worst voltage control, esp if they're really cheap. Example:Side note: Are you JUST talking about CPU mining on the Rpi? You'd get almost nothing for coins!

### Reply 3:
No, I'm not talking about CPU mining.

### Reply 4:
Can a car battery provide 120W constantly? Won't that burn out your alternator?

### Reply 5:
You don't need rPi. cgminer can run on the phone, and miner can be connected via USB.Btw. is there a compiled armel binary of cgminer? I found just the source and instructions on how to crosscompile some time ago...

### Reply 6:
Quite easily. Your typical alternator can push out 50 amps @ 14v, so 700w. Certainly, some of that is used for other electrical items (lights being a big user), but a large part of that amperage goes unused. It needs the extra overhead to be able to recharge batteries drained while the car is off, so using that overhead for other purposes is entirely possible.

### Reply 7:
Any reliable information on how much a kWh costs in a running car?

### Reply 8:
I read a little while back that idling a modern car typically uses 0.2 gallons/hour. So, if you consider that the minimum, then you're looking at at least $0.70/kwh. It is possible to achieve full draw on an alternator at idle, so I think it is reasonable to assume you could get 700w out of the car at idle. There would be a nearly negligible increase of load on the engine. $0.70 / 700w = at least $1.00/kwh.If you upgraded your alternator to allow for more load, then you might need to also increase the default idle speed to ensure the engine does not stall, which would mean more fuel usage.EDIT: Now if you're talking about running it on a car that is moving, I'd say the electricity is virtually free.

### Reply 9:
I'd say no way it is free. You put a load on the generator, it adds mechanical load to the system, leading to higher consumption of fuel. In case of a hybrid, you could say it's cheap because some of it comes from regenerative braking, but this would require some tweaking of the control systems to ensure optimal capture of energy for this additional load.

### Reply 10:
I don't think people realize how much a running alternator or other mechanical loads can affect your gas mileage. This is especially true on a smaller car like a sedan. It's still present on a larger car like a truck or something, but will still be present.I know on my little 2.0L 4 banger, the drop in gas mileage would be more expensive then just paying for the electricity.

### Reply 11:
Really. The energy has to come from somewhere, and a small ICE along with a cheap alternator are absolutely crappy at turning fuel into electricity. This graphic is actually pretty good since it's 40% conversion of chemical energy to mechanical energy is for a big diesel; for a small gas ICE it is actually very decent.Now, you could get almost free power if you tied your mining rig into your ECU. While accelerating you wouldn't actively hash but would just keep valid work queued up. As soon as you tap the brake, start hashing. The increased draw on the alternator would act as a form of really expensive engine braking and would save wear on your brake pads.

### Reply 12:
Once a rally starts on the market, massive pileups follow on highways... All miners hitting brakes suddenly Seriously, we are onto something here... A hashing unit can be used whenever there is lots power to be dissipated quickly, from vehicular brakes to cut-back protection in high voltage power supplies...

### Reply 13:
Guys, I never proposed this to save money - I was thinking about the flexibility and the ""cool-factor"".

### Reply 14:
Not sure if you earn points with the ""cool-factor"" by mobile mining. Interesting yes, cool no. Now cool factor would be mobile mining that results in greater number of coins produce then can be done standing still. Everyone here would be all over you and saying cool even though it is not realistic, or is it Mr. flux capacitor.

### Reply 15:
This idea crossed my mind but in the sense t<rest of thread truncated>
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15696,"Date: 2016-02
Topic: The Evolution of Mining *from princeton bitcoin textbook*
### Original post:
The Evolution of Mining *from princeton bitcoin textbook*

### Reply 1:
Thanks for sharing looks like first draft is being distributed for free: <link> Kinda neat to see it for free on first draft.Sadly I missed CPU day's.... wish I would have been following it back then ohh well cant catch them all.

### Reply 2:
Great to see such a pre-eminent organisation releasing papers, and in draft, for free.Not having yet read the paper, but commenting purely on the picture:The similarity isn't accurate: An individual of moderate means can still afford to contribute meaningfully at the ASIC level for BITmining, unlike gold mining.Basic infrastructure for an ASIC can cost about $1k with a moderate-low ROI, but still some ROI, unlike Gold mining at the pit mining level. Even 1 truck, or digger is so unfathomably beyond reach of the average joe it is just ridiculous. The scales just do not compare.Crash

### Reply 3:
Information age vs industrial age.The cost of computing power dropped so much in a few decades -- we can buy a $5 computer, or get it for free with a purchase of one magazine issue.(However, technically, a person can still get lucky gold panning.)

### Reply 4:
It's actually pretty interesting to read this from an academic standpoint. So much of what the average person learns about bitcoin comes from poorly punctuated and rambling blog posts or websites cobbled together in broken English that are targeting the uninformed. This is very well put together and almost refreshing to read.

### Reply 5:
the difference is that gpu mining is still viable thanks to altcoin, then you convert in bitcoin, can you do the same with gold?diggin silver and exchange to gold for even better profit? i doubt

### Reply 6:
I agree. I too have greatly enjoyed the academic rigor of this captioned image.

### Reply 7:
I was referring to the academic text that was released by princeton and fully available online for free.

### Reply 8:
I really need to read this paper. Look like a good resume. Great job princeton!

### Reply 9:
Even though the photo analogy is completely wrong. At the asic level I will read the article.I can rent 12ph for a day which is 1% of the entire network.My cost is under 50 btc or about 19,000 usd.So the scale is so far off it is sad.I would love to rent 1 % of all the gold mined in a day for only 19000 usd.Sad when an ""Ivy League School"" allows for really poor examples that are off my a factor of 10,000 to one. Or more.

### Reply 10:
Fun way to look back on what I encountered back in the days when I used to mine with multiple GPU's (old memories). I wonder if there will be something next to ASIC anytime soon that would be few times the price asic have with few times more hashing power than what is on market and be called something different as well. Regardless of which, nice draft to see different timelines on mining world.

### Reply 11:
What it doesn't convey is that gold was never the largest mining operation at any time (there was always some other metal that was more important).The bitcoin network is the largest network on Earth presently.

### Reply 12:
good point so the scaling is wrong in that I can rent 1% of the world's hash power for a day.and the value is wrong.

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22183,"Date: 2018-01
Topic: Canada Antminer S9 Setup
### Original post:
Quick <truncated> America installI was told I would need a Transformer since Canadian 220v is between phase, and the transformer will need to be between the sub panel and plug. Can anyone please shed some light on this statement? Ive read other threads but I see people saying to avoid transformers or not needed. I was planning on setting up 4x Antminers S9's in this fashion. 1) Breaker Panel, 2x 30 Amp breakers2) Breakers to a sub panel3) Sub panel to 2x 32A BLUE (2P+E) plugs4) This will then go to a Tripp Lite PDU (PDUH32HV19)5) Connected to Bitmain AWP3++ power supply6) Last to the minerThanks in adv!

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  },
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    ""hardware_name"": ""Bitmain AWP3++ power supply"",
    ""hardware_is_owned"": true
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14640,"Date: 2012-12
Topic: Anybody knows who are these unknown guys keeping on mining?
### Original post:
According to this: <link> the share of the unknown miners is growing.As if there was no possibility to make good money by mining, but for someone there is some unknown reason to do so.What is your opinion on regard?

### Reply 1:
Why is there no possibility to make money mining. If one already has bought a rig (or farm) and relatively low electrical costs (say <= $0.08 kWh) why would they stop? The resale value of rigs is essentially zero especially ones built out of 5000s series GPU which have been mining non-stop for 12-24 months.Why not keep mining? Most miners in that situation aren't going to turn off until difficulty hits 10M+ due to the first of the ASICs hitting the network.

### Reply 2:
Even if it isn't profitable at the moment, I can think of at least four reasons.1) These miners are in the enviable position of having access to electricity at a rate which does make it profitable.2) They believe their bitcoins will eventually be worth more than enough to compensate for what is spent mining them now.3) These individuals believe in bitcoin for idealogical reasons and are willing to spend some money to support the network.4) Botnets.Or some combination of the above.

### Reply 3:
The electricity consumed today doesn't have to be paid until next month. With Bitcoin's volatile past, it wouldn't be surprising for the exchange rate to spike ... like maybe 30%, thus causing even someone with average electricity (e.g., $0.12 per kWh) to at least break-even.Yes, this is gambling speculation, but this strategy has for the most part paid off in the past. (Those mining in October through December 2011 were doing so at a loss at the time but came out quite if they still had their coins in January.)Also, there were a lot of FPGAs shipped -- and every one of them mining today is bringing in revenue way above the cost of electricity to run them.

### Reply 4:
<link> is a sticky on this board explaining the (in)accuracy of blockchain.info

### Reply 5:
My guess is that they are:1) various clandestine government entities loading up at taxpayer expense, ""just in case"".2) financial sector entities that can somehow write it off their taxes as R&D and electricity expenses.3) botnets, of course.4) academia that has unlimited access to really big hardware, and electricity cost is also passed on to the taxpayers and paying students.5) Google and such corporations, for whom mining costs would be a drop in the sea.Imagine all the possible permutations of incentives and motivations just these groups have to keep mining.

### Reply 6:
For 1, 2, 4, and 5, I think it would be easier to just cook the books and buy some, since they'd be doing some creative accounting anyway.

### Reply 7:
The unknown section is largely the solo miners, which is why they are unknown. Regardless, small scale mining does not have to be profitable. If you live in a cold climate, perhaps in a small flat wherein your method of heating is not under your own control, running a couple hundred watts of mining simply exchanges your heat bill via baseboard electric heaters for heat produced by the mining rig; in which case the cost of electricity is a net zero burden, and any coins that might be aquired are simply a bonus. This would not be true for a major mining operation, since the heat would far exceed the demand for same; but this is as good a reason to mine in your own home as any other, and could undercut the professional miners even if they use ASICs. This is the only kind of mining that I've personally done, since I don't mine in the summer, when I would have to pay for additional air conditioning in order to remove that waste heat. In the winter, the additional heat isn't wasted, it simply offsets a portion of the heat demand upon my central heating unit (although, for me, gas heat is a bit cheaper overall).

### Reply 8:
Everything you need to close this thread, right here: ^^^Srsly I thought we were done with these threads.

### Reply 9:
Now it's bit clearer to me, thanks to everybody

### Reply 10:
I have 15gh gpu farm running, still profits pretty well.

### Reply 11:
Then your cost of electricity is well below average (e.g, you pay like $0.08 per kWh or less), I presume?

### Reply 12:
Mine in Thailand. Less than $0.04 USD per KWH is achievable. God bless third world countries.

### Reply 13:
Can someone explain to me how being a third-world country results in CHEAPER electricity? Is it because everything is cheaper in your local currency, and by converting a stronger currency like the Dollar into local currency you get a favorable exchange?Because otherwise, if what you say is true, I want to live in a third-world country too!

### Reply 14:
<link>

### Reply 15:
$0.026 per kWh, it actually seems expensive compared to what it was a couple years ago

### Reply 16:
Government subsidies in an attempt to alleviate poverty and to increase access to e<rest of thread truncated>
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10813,"Date: 2019-04
Topic: Failed to initialise error on cgminer 4.11.1 (macOS 10.12.6)
### Original post:
Hello all,Just received a NewPac but can't seem to get cgminer 4.11.1 (installed via homebrew on Mac OS Sierra) to initialize the device. Runs 2pacs without issue. Tried using both the newpac-specific switches as well as no switches at all, and no luck.This is the error:Code: [2019-04-13 14:43:17.034] GekkoScience detect (20:30) failed to initialise (incorrect device?), <truncated> 14:43:17.035] No devices <truncated> 14:43:17.035] Waiting for USB hotplug devices or press q to quitResult of ./cgminer -n; ./cgminer --help | grep newpac-freq; sudo ./cgminer -n:Code: [2019-04-13 14:34:21.596] USB all: found 13 devices - listing known devices.USB dev 0: Bus 20 Device 30 ID: <truncated> <truncated> 'NewPac Bitcoin Miner' [2019-04-13 14:34:21.596] 1 known USB devices --gekko-newpac-freq <arg> Set GekkoScience NewPac BM1387 frequency in MHz, range 50-900 (default: 100)[2019-04-13 14:34:21.710] USB all: found 13 devices - listing known devices.USB dev 0: Bus 20 Device 30 ID: <truncated> <truncated> 'NewPac Bitcoin Miner' [2019-04-13 14:34:21.710] 1 known USB devicesAny ideas? Thanks for reading.

### Reply 1:
cgminer probably can't claim the device. try disabling any possibly active vcp modem drivers. find them with:Code:sudo kextstat | grep -i ftdiunload the driver to keep it from <truncated> kextunload -bundle-id <truncated> kextunload -bundle-id <truncated> from kextunload to kextload if you want them back.

### Reply 2:
This worked! Thank you.

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11330,"Date: 2023-07
Topic: Now that usb sticks are being sold by sidehack  here is a new usb hub thread.
### Original post:
Old picture but this is still what I'm running. 10 Compacs on a single 10 port A-300 hub I believe it's a relabeled <link> Purex 120mm case fan using a home made dc barrel to molex adapter 12vdc wall wart powering a $5 evercool single fan <truncated> is now updated with Pixel and I followed Jake36 post to install novak's cgminer-gekko-rev2.

### Reply 1:
<link> USB 3.0 70 watt hub. 7 ports, 10 watts/port.<link> pic, eventually ran 5 overclocked compacs and the artic fan on it.works great. even with a rPi model B

### Reply 2:
I heard those hubs broke pretty easily some time ago (don't remember when or where I heard that). Good to know that someone on the forum runs one of these hubs, once I get a few 2pacs and bit fury sticks I might consider this or the superbpag. Voltage is a little low on each port (5v600ma) compared to the superbpag but otherwise good; these also sell on eBay.

### Reply 3:
I've been running that particular A-300 non-stop since U2's were $75 a PIECE!!!

### Reply 4:
I can't even remember when U2s were still available, I started mining actively back when the U3 was still on sale and when you could easily get a Block Erupter for five bucks and shipping. Those were the old days.. Looks like a nice hub, illl consider it once I get my sticks

### Reply 5:
No pics at the moment, but I currently have this Anker USB 3.0 hub:<link> fine, but won't work with RPi, I would like to switch over to a different hub that I can run on the RPi. I currently have four compacs running at 275mhz and I have two 2Pacs ordered.I was thinking of getting this:<link> to find something to work with the RPi and be able to provide enough power for the 4 compacs and 2 2Pacs. Hoping to crank these things up 300+mhz.

### Reply 6:
You should be able to. Superbpaq supplies 2A for each port and works well with RPi.You can push an original compac to somewhere around 340Mhz under 1.95A.

### Reply 7:
somehow, I was not able to run more than five overclocked Compacs on one Superbpag, but I did not try too hard.For biggie(s) I am planning to use 300W PSU from my old HP500 tower that i upgraded to 500W. It got PCie and biggie will get at least one PCIe connector. Should be easy peasy, I hope.they sell on ebay for $25-28, great value, IMHO<link>

### Reply 8:
Put the USB 3.0 hub into a non powered usb 2.0 hub. That is how I go my Orico A3H10 BK to work. Could not plug it into my powered Orico USB P10-U2-PK

### Reply 9:
Has anyone managed to modify an existing powered hub so it can support more power?

### Reply 10:
I know I saw one picture of a Hub that had been opened up, and and additional +5V and GND wire had been soldered on top of the thin trace already present on the PC board. The idea is that the thin trace would have too much resistance and would cause a larger voltage drop when more current is drawn. There were a lot of posts on this in the latter half of 2013 and early 2014 when USB miners were popular.

### Reply 11:
I think thats what ive already seen. It was to a standard hub which had the unsusd +5v and GND. Just wondering if you could modifiy an existing powered hub to ""beef it up"" powerwise. Where woild the most likely bottlenecks be to stop it drawing the maximum current possible?

### Reply 12:
With sidehacks 2pac usb stick out and for sale here<link>I would like to start a usb thread.please post a link to buy and a photo or 2 of your usb hubs mining with sidehack sticks.I own this usb hub.A beast but only a usb 2 a little outdated.Got it from eyeboot ------ klintay of this forumhe has this one below in black and usb 3.0(Reflink)<link> in silver and usb 2.0

### Reply 13:
My attempt at upping the power to my soon to be arriving 2pacs on the cheap. I'm reusing stuff I already had on hand. I am waiting on my Block Erupters to sell on eBay to reclaim a 5v 40 amp led ""meanwell"" power supply. My plan is to use Monoprice usb extenders and some 18GA wire to hook up the power of the meanwell and data of a cheap 10 port hub (also hooked up to the meanwell) I hope to get these guys running at 3 to 3.5 amps per.I slice the jacket and remove the red and black wire (verifying that they are the +5 and ground on the usb ports) Cut the red wire and cap the side coming from the usb hub. Solder in the new 18GA wire +5 and ground cables. Verify no shorts and wrap the solder joints on opposite sides of the usb cable. <link> cut some 3/4 wood dowel and using a saw and 1/2 drill bit made usb ""Holders"" they are spaced 2"" apart to allow cooling. I plan on attaching these to the board that my power supply is mounted to and using hot glue attaching the usb ""holders"" to the wood dowel. And then attaching cooling fans.Will Post more pictures when I get it completed. Just wanted to throw this out in case it helps others.

### Reply 14:
Looking forward to updates and pictures of your setup.

### Reply 15:
Awesome! Thanks fo<rest of thread truncated>
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    ""hardware_name"": ""Block Erupters"",
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22609,"Date: 2018-05
Topic: Simple S9 repair/overclock guide
### Original post:
I remember some talk of a pencil mod back on one of the real early model antminers but I never did check it out so I am not sure what it is. But let me see if I understand you, are you saying that drawing on the back of the R10 resistor with a pencil will increase the voltage of the chain and can help with hashboards that don't perform well at higher freq? Does the graphite from the pencil conduct some small amount of charge across the resistor? Also you are saying to be careful about it but having never done anything like this, what does a mark that would have a small effect even look like?I am not sure where on the hashboard this is either, by any chance can you see this stuff without removing a fan?

### Reply 1:
It would be very uneasy to do it by rear fan hole, but it is possible.Yes, it exactly helps hashboards which do not perform well at std frequency.

### Reply 2:
Thanks for this! My batch 3 is running at stock freq without any X's for the first time ever. The problematic hashboard still under-performs the other two slightly but it is getting higher hashrate then it ever has before.

### Reply 3:
Just FYI for anyone who does this, those things are really tiny and you can't tell that from OP's super large images. You are going to want a very sharp pencil. I basically covered half of the resistor with graphite but it wound up being especially shiny along the edge since I was working without a magnifying glass and I am not exactly a surgeon. But I took it apart and did it 3 times total to work up to a decent result. Pretty pleased with how it is performing now. Finally getting the advertised hashrate.

### Reply 4:
Ja. The resistor is about the size of a kernel of short-grained rice. When done, also be sure to carefully blow/brush off any graphite dust that might be around the area.

### Reply 5:
To OP:Have you taken any resistance measurements of R10 before and after pencil tweak along with resulting output voltage to give us target values for the R10 mod?edit: nvm... just looked back at OP and saw

### Reply 6:
It was the s1 where the pencil mod was used.'Lead' pencils are actually make of graphite and clay. Graphite makes the marks, amount of clay controls the hardness of the pencil. Point is, graphite is a form of carbon and is conductive.Using a sharp #2 aka HB (soft) pencil to draw a line on the resistor essentially is putting a new resistor in parallel with R10 which lowers the resistance, in turn changing the Vref or Vfdbk applied to the regulator. Either way, it changes the regulators output voltage.

### Reply 7:
As a Blast form the Past, here is the link to the original How to undervolt an s1 <link> Dropped them from 1.19w/GHs to an amazing 0.89w/GHs Compare that to today's >7-8x lower efficiency. Woof! Thought about doing it to the dozen s1's I had back then but -- each board had 4 regulators to tweak by hand and x2 per miner x12 miners.... just not worth my time to bother with.Now with the s9 and 1 tweak per board and then only as-needed -- thass a while 'nother story. Thx for the info.

### Reply 8:
Yeah I had 16 AntMiner S1s at one time, sold off 8 and did the ""pencil"" trick with the other 8. Man that was a rough two days! Huge PITA to get the exact value needed, was really just trial and error! The S1 was a bulletproof miner that would stay up for ages, after modding them about half of them would restart every couple days. But hey, it dropped the power usage in half!I still have those 8 modded S1s on a shelf in the garage. I should probably toss em!

### Reply 9:
Save them, they might still be useful if everything goes fine with sidehack's S1 re-fit board (16nm Bitfury chips) project

### Reply 10:
I've got 2 boards I can try this on. I'm pretty excited.Edit: 9.15 on A board doesn't hash. any suggestions?

### Reply 11:
Do not remove the resistor.Draw on it with a pencil. The pencil lead will lower the resistance and raise the output voltage. A small change in resistance can make a large change in voltage.Have a bit of patience.

### Reply 12:
This rocks. will try in the future. mark.

### Reply 13:
I will try the pencil trick on one of my S9's when I have some time. I'll have to find my good mechanical drawing pencils! (It's a 600MhZ miner but in the last couple months must be set on 550 or there are X's scattered on two different boards.)I will also check out the solder points you mentioned for fatigue or failure. I'm assuming the pencil line will go left to right - as you are looking at the image above - and will only cover R10 within the oval. Please correct me if I'm wrong.Thanks for the information!!

### Reply 14:
sub'ed / / / thx for the share OP

### Reply 15:
Hello, it's been a while since my last hack. Now I am much more lazy, so no soldering tool will be used, but if you wish to, you are welcome.This repair is intended for all batches of S9, except batch 17+ which I didn't tested yet. Main reason was <rest of thread truncated>
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22198,"Date: 2018-01
Topic: can redfury asic do anything other than sha256?
### Original post:
Hello,I stopped mining a few years back but have just gotten back into it again.I have 5 redfury usb miners, which are mining about 11-12 Ghs on sha256Since I have been out of the loop, I'm curious if there are any other algo's that these things can use?My old GTX 760 is getting over 10x the btc alone using crytonight than these 5 usb's can pull in. seems off.

### Reply 1:
No.Lookup ASIC in Wikipedia to learn why.Also highly suggest you immediately read -ck's <link> in your case Point-3 applies. Those sticks of yours are ancient... Good for lotto mining but that is all.

### Reply 2:
yeah, just asking if anything changed. I see new coins using sha256, but that's all I found.

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23043,"Date: 2019-08
Topic: Antminer S9 on 2x 110v question
### Original post:
On the 3 boards on the miner, each one has 3 sockets, one socket says ground, another 12v, so I assume the 3rd is 5v....on the breakout board, there one ground and one 12v, and I assume the other 4 are 5v....I know not to split the hashboard between power supplies, but if I put 2 hashboards to one power supply (6 cables) do I need to worry about designating the exact cables ground-ground and 12v-12v between the hashboard and breakout boardSo basically my question is I have 3 ground sockets and 3 12v sockets going to 2 power supplies

### Reply 1:
Yeah I got that, my question was about the small sockets on the board of the miner, one says ground and the other says 12v on each bay, whether those need to be plugged specifically to sockets on breakout board

### Reply 2:
What do you mean by ground socket? Every socket has own grounds and each socket need 12v output.If your plan is to put two PSU check this image below what is the correct one to put PSU.This is the correct one and below is the incorrect one.Source: <link> you won't get the maximum hash rate of each board with 110v power.

### Reply 3:
this is pretty senseless questionthere are x x x x x xx x xx ten identicial 6 pin sockets on the s9 all are six pin so what else do you mean

### Reply 4:
What PSU are you using? I've never had to set one up that had a breakout board. I'm assuming you have preassembled 6-pin cables to make the connection from the PSU to the S9. If your cables are properly assembled they only fit the connection on the S9 boards one way. Is this similar to what you are talking about it?<link>

### Reply 5:
Yes very similar, but one specific socket says 12v and one socket says ground, just wanted to know if its important....And thank you everyone for helping me >.<

### Reply 6:
you need to make an account with imgur.com and photo your breakout board then post the link to the photos here.

### Reply 7:
Those 6 pin plugs are the very same used by gpus on ATX psus. All they have is three 12v and three ground, nothing <truncated> VDC5+12VDCYellow+12 VDC6+12VDCYellow+12 VDCThere is no 5v.Each hashboard has 3 (6pin) plugs, and those three should be fed from a single PSU. I think you could even theoretically use 3(4) psus, one for each hashboard (3 6pin plug each) and the controller. You are also supposed to ensure the controller comes online (powered) first which also uses its own 6pin...

### Reply 8:
Here i attached the image... it shows ground on the left<link>

### Reply 9:
I gave you a merit for posting the photo. as for photo the ground on the board it is a meaningless reference. for your purposes.what matters is as follows..all your black wires on all your pcie cables that go into the break out board are on the side that has the clipand all your black wires on all your pcie cables that go into the miner are on the side that has the cliplook at this thread.<link> are black and yellowbut the good wires are all black to clip and yellow to no clipyou would be black to clip and white to no clipphoto it before you turn it on.since you want 2 psu'syou should just use 1 psu and do 2 boards with the controllershow us that photoone of us will say it is good. or bad.

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11872,"Date: 2012-04
Topic: Please help donate 107 BTC for CGMINER support for x6500 fpga(17 still needed)
### Original post:
We only need 17 more bitcoin.

### Reply 1:
I sent 3 just now.

### Reply 2:
Hmm - I was given an Icarus for free for helping debug and get it working on cgminer.(though that was a rather difficult thing to do without any hardware at all or the ability to even run the code )I'd love to know a reason why larger developers consider that too much ...(I also bought a full price 2nd one a few days later since it seemed to me a good idea to support Icarus also - I just didn't have enough BTC when I first helped with the Icarus.c code - and also thought that getting 2 sent together would be a good idea when I did have enough just after that)... and an aside on that - xiangfu has the latest best Icarus code for cgminer.The one that went into cgminer the other day is ... well ... not optimal.(and I got really pissed off about having to argue with Luke-jr about why his icarus bugs were bugs - including the one that reduced the actual hash rate of the hardware - and have thus taken a break from cgminer software work for a while ... due to issues about the importance of FPGA mining code and it's reliability in cgminer ... and other issues ...)I'd guess if this project went ahead and ckolivas got an FPGA also, he'd take interest in the FPGA code in cgminer ...

### Reply 3:
I thought you might be interested in coding up this x6500 support instead of me. I did not expect you to come here and complain about your relationship with Luke-jr, as this is not the thread for it. As far as I was aware he addressed everything you told him to address and have included his code on that expectation, while withholding his code that touched your API code unnecessarily. If you wish to discuss this further, talk to me in private, or in another thread. No point taking your frustration with Luke-jr out on this thread.

### Reply 4:
By ignoring your statement that you don't want to do it, it forces you to do it.

### Reply 5:
I know that goddamnit LOL.

### Reply 6:
Sorry haven't been back to the thread, we are 14 BTC short now. Thanks for offering to do this when you get a chance. I talked to LUKE Jr. and he said he would do it. I told him I would message him back once I received all the funds. I wasn't trying to start such a big debate over this, it's just that I have bought a number of the x6500 FPGA boards and cgminer is my favorite miner. It's what I'm used to. So hopefully we could get this done and this would be good for everyone.

### Reply 7:
I must admit that I was also given an Icarus board by ngzhang for free, for adding MPBM Icarus support. Which I actually consider way too much, because it just took me like a few minutes to implement that, given its similarity to a previously existing module, and given that I did already implement it before he even sent out that board, testing via ssh on someone else's board. I consider that very generous of ngzhang FPGA Mining LLC paid me just a bit more than offered here for MPBM X6500 compatibility, and that was at a point where the pre-existing code was much less documented and streamlined, so this offer fits in comparison. And being close to the end of a batch, not being able to satisfy all orders currently, is certainly another point why we aren't just giving away a board.Given the complexity of this task, I would really say that getting a board for it is well-deserved, on the other hand just piggybacking on this bounty was probably just too tempting for fizzisist

### Reply 8:
I will repeat my last comment I made (that ckolivas mightn't like either )He doesn't have any FPGA hardware, and I think if he did it would be better for all

### Reply 9:
I still have trouble caring about FPGAs, and am happy to leave that to outsiders to work on. GPUs are far more interesting to me. (No I wasn't trying to start a debate about the relative pros/cons of each as we're all well aware of them by now).

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23836,"Date: 2022-01
Topic: S9 psu starting after long delay post voltage surge
### Original post:
I have S9i with a Chinese psu 2300 watts? during night my voltage surges to 265v and I turn off miner at mid night and turn it back on in the morning when voltage is normal but for some reason it takes long for psu to start back and sometime I keep it switched on for few hours and ultimately miner will start running.. is this is a known thing?? I?m getting a voltage stabiliser soon with output range of 200v-240v, hopefully that you solve this for good

### Reply 1:
No, it's not normal for Bitmains PSU since you are using a Chinese PSU I don't know how this PSU works.Usually that kind of issue it's due to leak or maybe have broken capacitor if you have a multitester that could read capacitor from your PSU you can check those broken capacitors.The multimeter that I use looks like this You can replace that broken capacitor with the same value.

### Reply 2:
It's safe to assume that the vast majority (in fact if I do want to say 100% but I am afraid of being unjust to 1 or 2 manufacturers) of non branded PSUs are trash, not only a risk to the miner itself but even to your own property since they are a fire hazard.If this was a device that runs for a few hours day while you are next to it -- it might pass, but having it run 24/7 unattended for the most part is a recipe for disaster.

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10025,"Date: 2016-10
Topic: Antminer S9 Sales
### Original post:
Is there a reason why bitmain has stopped selling s9 miners? Its been out of stock for some time; is there a new model coming out? Or is it something else?

### Reply 1:
Well they are busy swapping out s9 for s7 in their cloud ops.Remember when you have a .1 watt miner and your competitors have .25 watt you don't need to sell any gear you can simply mine.Punch in what a .1 watt 12th miner earns with 5 cent power .And also remember they build it for say 700 maybe 500. They simply have almost zero need to sell any gear.Now if Avalon sells its model 7 maybe bitmaintech will sell more s9s

### Reply 2:
I see... okay, thanks for the explanation.

### Reply 3:
Now that Avalon company is about to be sold, I wonder how their subsequent miners will perform in the market.

### Reply 4:
Its not being sold <link>

### Reply 5:
Yes and the fact that they need a specialized environment to work. Prolly somewhere around 20 c input temp is safe MAX. Course good luck with that if your at home running these in a garage. Im going to be selling mine on ebay for cheap in the next couple days ill post a link here soon. (winter is the safest time i feel i can sell these and not get a chargeback and ohh boy wait till you see my description of these machines . Think you all might get a kick out of it except maybe bitmain lol. Its long past time i gave this up. Now im sure most of you will hoot and holler at that but the more they pick away at those that participate in this experiment the less people there will be that use it or worse that advocate for it. Crypto with all the bs that is happening with ethereum and btc is really leaving a sour taste in my mouth. I have over 850 mhs eth rigs ill be parting with aswell. ( not to mention i guess its time to fire sale the hardware left in the garage. Been procrastinating doin it cuz its going to suck major! 80Ths sha-256 plus 1 ghs scrypt all inefficient and collecting dust) That should be my first sign that this game is rigged towards those that have the most money cheapes<rest of post truncated>

### Reply 6:
The s9 has been the hardest miner for me to run. more breakdowns then my other gear. I had six. buysolar took one I sold off threeI have two at the solar arrayFour of the s9's have been flawlesstwo of them have had multiple repairs.I sold the repaired ones off on this past Sunday.I sold one of the flawless ones last week.I kept two of the flawless onesBuysolar has the other flawless one.I was up to 650mh in eth rigs I sold off 200mhI now have 425 mh in eth rigs.I moved one rig to the solar arrayI have 345mh in my garage.I may sell my gear off fully the two s9s and the 5 four card eth rigs

### Reply 7:
So should we start having a petition to try and find another mining company? I want some hardware but no one is selling

### Reply 8:
If they are swapping out S7's for S9's then why aren't there shitloads of S7's for sale?

### Reply 9:
Why are you selling your mining gear?

### Reply 10:
I am thinking they already swapped it and sold the S7's. They just didn't fully stock and fire up the S9's so they wouldn't explode the difficulty. There appears to be a very deliberate and steady diff increase going on these days. Someone fires up a ton of gear towards the end of each diff jump and then lays off mid cycle before doing it again to produce a jump each time. This next one looks to be a good size jump but whoever is doing it seems to have more and more hashrate with each diff step, which makes me think it must be bitmain. There are a couple other miner manufacturers but they all seem more limited in how much gear they can produce (apparently not enough to sell any anyway).

### Reply 11:
I sold 9 gpus and multple pc's So far I kept 19 gpus and 5 rigsI sold 3 s9's well four but one was to my partner buysolar I have 2 s9'sAll my s9's are out of warranty. my gpus/pc for eth are in warranty.with the sales I did and the mining I did I am very strong on coin at the moment.I may sell all gear and go stronger on coin. It is simply a guess that a big coin move will happen. i am over 20 coins at the moment I may look to sell everything and go to 35 coins until Jan 2017.

### Reply 12:
OT: hey, fellas, how do you buy bitcoin if you want to buy a S9 miner with new funds (not old coins) after instabuy is gone from Coinbase?Instabuy disappeared (once you get to the card expiration date), being replaced by credit/debit card buy, but with a very high fee.Do you just ACH funds to GDAX, then buy there with a lesser (trading) fee?Thanks

### Reply 13:
good move, I am also bullish on coin, but miners make coin. I would like to get max dollars for miners, so I am content with miners mining coin(s) and IF $$ price/coin increases, i would be able to sell S7 and S9 for more $$ later on. We shall see if ETF is finally approved by Oct 12 (I doubt it).Regarding rig sales-I cannot sell them so soon after i spent time 'nurturing' them to 'life', not for at <rest of thread truncated>
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24000,"Date: 2022-08
Topic: Antminer 17 Series, 19 Series Control Board Repair
### Original post:
1. When the control board cannot be turned on, when there is no voltage or low voltage. First, determine whether the power supply is faulty. The voltages of the power modules are 3.3V, 1.8V, 1.5V, and 1.0V, respectively. Therefore, if any voltage in this area is abnormal, check the corresponding components for damage.<link> is the front end voltage. If the circuit is shorted, remove U8 before testing. If it is still shorted, it may be caused by damage to the CPU, and you need to remove the CPU and test again. If other 1.8V, 1.5V, 1.0V are abnormal, it is recommended to replace the corresponding voltage conversion IC.Damaged CPU or poor soldering can also cause a 3.3V short circuit or a situation where the control board won't power on. It is recommended to reheat and repair the CPU, and retest after cooling. If the fault still cannot be solved, it is recommended to try to replace the CPU. At the same time, it is recommended that you check the circuit on the back of the CPU for damage. Note that when replacing the CPU, the CPU is BGA ball mounted, so it cannot be pressed during soldering.If the voltage is normal and the indicator light on the board is not on, please check whether the<rest of post truncated>

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10752,"Date: 2018-08
Topic: MY_CUSTOMISED_HARDWARE
### Original post:
They belong in a museum

### Reply 1:
Haha, that puzzle of a photo of mining hardware / marketing items are great && //been a while since one has surfed the hardware section~Testing Applications of the Futures Timeless Era

### Reply 2:
Sorry for the mess guys . I am just a human being 'meat1ware' in the between of a bunch of wires and environment (nature) ..

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22311,"Date: 2018-01
Topic: Do you shut down your miners in a lightning storm?
### Original post:
We just recently had a thunder storm here which made me wonder if I should unplug my miners in case of a lightning strike. Also sometimes the power will cut in and out. Id imagine its probably not good for the miner if the power cuts in and out and its trying to reboot.

### Reply 1:
No i use surge protectors, but if you dont have surge protectors then it might be for the best to disconnect your miners from any outlets.

### Reply 2:
Don't mine without some sort of surge protection. I always see posts and people selling broken miners because a power surge broke something in them. It's a much more common issue than you might think. It's definitely a real issue.

### Reply 3:
If you run quality server PSUs there really is no issue as they have protection circuitry built in. Its using the shitty bitmain PSU or an ATX psu where you will find problems.

### Reply 4:
I do have a couple APW3s

### Reply 5:
U need to install a surge arrestor at the distribution box. It costs some money but is important. U dont want a strike to fry it.

### Reply 6:
I will be more expensive to shut down your miners during a lightning storm (because of the down time), than to install a proper surge protection for them.

### Reply 7:
You guys have covered the issue of a lightning strike affecting the power to the devices - but you must also consider a more vulnerable issue - the network connection. I have seen lightening strikes wipe out entire networks through the ethernet cables initiating through the internet connection. A voltage spike to the network connection to a miner will fry the controller. The best way to protect from this is to use a fiber link somewhere between the Internet connection and the miner farm. Electric surges cannot pass through fiber.

### Reply 8:
I use these euro version surge protectors 220v on my stuff..have saved my ass 2x over 4 years or so<link> come with a psu cord to the tripp lite unit itself...I myself just ran ONE per miner in the basement (had like 5 at one time in basement) the stuff at the data hallhas its own <truncated> so the cord from your psu (funky sockets in pic) ARE included in the box...from the box to the wall you have a choice of 3 types of outlet plugsI set up the below kind in my basement from the electrical servicebelow is the cord that comes with the above surge protector<link> is the cord I use to the wall from the surge protector above<link> setup below in basement if anyone is interested w/fans cooling <truncated> figured ONE per miner and 1 20amp 220v circuit to each miner was overkill...but again ...did save me some equip 2x in 4 years I'm surefrom storms.....so anyway, what I didbrad

### Reply 9:
I don't have a huge amount of hashrate and am prone to paranoia.I installed a whole home surge protector in my place right near the top of the panel; and if I am home I will shut them off for the couple hours a storm is going.I also only have 5 or 6 big electrical storms a summer so it's not to big a deal for me.

### Reply 10:
Anyone have an opinion on these? It would be nice to just plug it into my outlet and plug the miner into it.<link>

### Reply 11:
How to use a fibre link? Can it be used in a cable modem setup which uses cat 6 cables? I am not using fibre internet.

### Reply 12:
I assume he's talking about using a media converter, going from UTP to fiber (and back) is common in the structured cabling world. I haven't used one in a long time but they even have coax to fiber media converters if you have coax and you wanted to protect the modem as well.If this is a ""home"" type set up I would avoid the media converters and would just get an inline ethernet surge protector. Avoid the real cheap ones make sure to look at ones that are rated for ""lightning protection"". Something like this one: <link> note I have never used that actual product I just did a quick google search on ethernet cable surge protection and that was the first one from amazon that popped up! It is just an example, do your own research as that one is probably overkill for a home miner.

### Reply 13:
Noted all your info. Will reaearch it. Thanks

### Reply 14:
Media converters work well but that is not what I use. My farm is in a shed that is connected to my house via fiber with a Cisco switch in the shed and one in the house. Both have fiber ports. This solution works well and is not expensive. The switches cost about $120 each, the fiber GBIC modules are about $30 each and a 100' fiber cable is another $30. Here is what I used:<link>

### Reply 15:
You are asking for a magic box solution. You are not doing what is always necessary to have any honest answers - the whys.Lightning is an electrical current that 3 miles of sky cannot block. How do a millimeters gap in that magic box stop what three miles of sky cannot?More numbers. Destructive surges occur in microseconds. At best, that magic box cannot respond any faster t<rest of thread truncated>
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    ""hardware_name"": ""surge arrestor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""euro version surge protectors 220v"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""whole home surge protector"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fibre link"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""media converter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""inline ethernet surge protector"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cisco switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fiber GBIC modules"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fiber cable"",
    ""hardware_is_owned"": true
  }
]"
22388,"Date: 2018-02
Topic: Follow up...  question about PDUs amp readings
### Original post:
Morning everybody!My colo setup is 6 miners + Cisco SG200-26 Gigabit Ethernet Smart Switch on same rack and other 4 miners are distributed in 2 different racks. All are connected to the switch where 6 miners are living. That is 10 total miners.When any of miners (14th/s) are plugged into PDU with switch they read 7a, but when they are on other 2 PDUs they are reading 10a or above.I am not 100% why this is happening, but find it strange whenever any of 10 miners are plugged into PDU where switch is they read 7a, but when moved to other 2 racks the PDUs read 10a or above.Thanks again gentlemen, always appreciated.

### Reply 1:
the s9 should read 6.5 amps or so at 220, so 7 amps is within spec. Is the other PDU 110v maybe and your PSUs are auto switching and pulling a lot more juice?

### Reply 2:
How can I verify if the 4 PSUs are auto switching?

### Reply 3:
The colo should be able to tell you what kind of power the PDU is providing. The PSU should be auto sensing, if it was not and it was not setup for the proper voltage it would have just blown up.

### Reply 4:
Will the miners consumer whatever power is given them? I asking colo to switch miner set up to 5 & 5 and see if that somehow better distributes the power consumption.Thanks for input too, always appreciated.

### Reply 5:
Miners consume power based on their technology (typically measured in ""nm"" (nanometer transistor size) and the frequency they switch those transistors. Smaller transistors use less power than larger ones, which is why 16nm S9s are more efficient than 28nm S5 technology. Of course, design changes within a tech level affect power usage as well, which is why S9s are better than S7s.This is why the faster you run an S9, the more power it requires: 1127W (11.5TH/s batch), 1225W (12.5TH/s batch), 1274W (13TH/s batch), 1323W (13.5TH/s batch), 1372W (14TH/s batch)Frequency itself is limited by the power requirements and the corresponding heat generated (remember that every watt of power used switching results in a watt of heat being generated), and by the leakage rate of the transistors themselves. That leakage is why in any given batch of chips, some will run faster than others - over simplified, the leakage is basically caused by small errors in the printing of the transistors. Better/faster chips have less random errors. Think of it a bit like ink bleed, or a small hole in a bucket. If you dump the bucket slowly, you will get a lot of water out of it. If you dump it faster, the leak cau<rest of post truncated>

### Reply 6:
!Perfecto!Thanks. Makes no sense for me to pay for 10amps+ when not helping me hash faster. The colo has to figure out ish on their end, bc my miners & psu's are all pulling 7a on 1 rack, but when moved to other racks they say it's reading 10a. If they can't figure it out, I probably need to move to different place with more expertise and ability to correctly set up the environment.

","[
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    ""hardware_name"": ""Cisco SG200-26 Gigabit Ethernet Smart Switch"",
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10860,"Date: 2019-12
Topic: My Pangolin Nightmare continues
### Original post:
They were removing stickers and leaving glue like that since M3 models. Some people thought it was because they were originally branded as the scam Kodak KashMiner. The real issue may have been from pending litigation with Bitmain over their PSU patent and claims their former engineer, who founded MicroBT, stole designs. That patent was supposedly revoked during litigation, but there was recent news that he was being held by police for new intellectual property infringement claims made by Bitmain involving tens of millions of yuan. They are probably removing the stickers again to avoid units being seized.

### Reply 1:
I mean if they recycled chassis that's awesome. It's a metal tube might as well recycle it no?

### Reply 2:
Shitty, sorry to hear about that. I've dodged dead units so far. I had a limpy t9+ so it was an easy decision to not send back the entire machine for a simple repair and hope it came back working. That's always been the biggest BS policy around that you pay the return shipping for this gear when it arrives dead.I got lucky with Pangolin. They tried, but I hated having to be on TG and using Teamviewer to essentially watch them load a couple firmware versions hoping to fix my issue. In the end I was still left with an erratic unit that couldn't handle LP mode very well. So a small loss when compared with shipping costs. My problem was a little different as the unit would run just not as well as it should have, so I made a case for at home repair to try and swap out possible issues like a PSU or a bridge. Personally I would try and get them to cover half of the return shipping costs or something. Play the you were late card, and the fact that you purchased other units from them. It never hurts to ask in these situations. The glue/sticker issue they have said on telegram was to facilitate smooth shipping and export/import. I guess that's a reason.

### Reply 3:
I got 1 m38 m101 m21s1 m201 m10 was a piece of garbage basically an 800 dollar loss.all other gear was okay. although right now 1 m20s is down and i dont know why. i will look at it on friday the 20thwhat really hurt whatsminer was the really slow shipping for the august purchases.

","[
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    ""hardware_name"": ""t9+"",
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  {
    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""m38"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""m101"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""m21s1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""m201"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""m10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""m20s"",
    ""hardware_is_owned"": true
  }
]"
22176,"Date: 2018-01
Topic: Output heat calculator for Miners
### Original post:
Hey there guyz! I am trying to make Spreadsheet in excel, where i can see how much output i needed for heat for miners i am using. Link down below(there is no virus only simple excel file )Anyways, what numbers i have picked up from internet(please correct me if i am wrong somewhere).1 S9 - makes around 200 CFM(cubic feet per minute) or 5.6CMM(cubic meters per minute(POWAH OF GOOGLE!). And depending from that i will need certain amount of output as well.Now i come to the part where i have room of certain Volume(around 1589.160003 in Cubic Feet or 45 Cubic meters). I want to find out how Volume and Total heat output are related. When i get Total heat output, and Volume, i can just divide one by another, and get time when will room heat in minutes right?I'm really sure something is off here, so feel free to bash me as much as you want Link is below:<link>

### Reply 1:
While you need the airflow calculations (volume in CFM), the more critical data is the power dissipation (in watts) and the conversion to BTU's (1 W= 3.412142 BTU/hr).Good luck!

### Reply 2:
You also need to know the specific heat of air at the conditions of the room. It's then trivial to calculate temp increase for a given time period.

### Reply 3:
You are overthinking this a little. Unless it is more of a pet project in math for you. Essentially you want to take the miner exhaust air out of the room as fast as possible not allowing it to raise the ambient temperature. You want to exhaust this air in a way that it won't recirculate into the room your miners are set up.So depending on what your goal is here, theoretical math problem or real world solutions, if it is the latter; What do you have for exhaust options in the room? what are your options for bringing in fresh air?

### Reply 4:
Well...i don't think bringing fresh air is in option, since, because air is very hot(hot country during whole year). So we should come up with some HUUGE AC, and to do exhaust option. At the moment i would say ""none"" for exhausts options, since depending from number of units, we would need to make that, big fans/ACs, and number of units is fluctuating, from 40 - 200.@Steamtyme preparing solution in advance for real world problem, trying to get a estimated numbers(helping a friend) so we know what fans/AC units we need to buy depending of the numbers.@VRobb uhh i don't know that currently, i guess i should ask, but i was thinking around 20C is for start(something like basic room <truncated> Thanks! I will take this in a count, will later change numbers so we can get some better numbers

### Reply 5:
If AC is your only option, and an expensive one at that, then match the amount of heat coming from the max number of miners you'll possibly be running to the tonnage of the AC unit you buy. 1 ton AC = 12kBTUEasy peasy, just takes money, money, money!Mine On!

### Reply 6:
I guess that will be my most possible, easiest solution @Vrobb, electricity is pretty cheap at imagined place. So AT the current moment and numbers we will need 50k BTU AC or 5 tons. Thanks for input people!

### Reply 7:
A good option is to be living somewhere in the north and not south, and use a room in your house with multiple windows in it so you can basically just create a wind tunnel of cool fresh air. If that's not an option, then an AC is definitely for you, but don't overestimate how much these things need. I'm cooling my 20 miner farm with a 14,000 BTU AC and the temps are fine. Obviously they're going to put out more than that, you just have to exhaust their heat well.

### Reply 8:
How many cubic feet are you cooling with that 14,000 BTU A/C unit? Also what do you keep the temp of that area? I ask because that is *exactly* what I was going to use for my setup after researching I figure cooling as small an area as possible with a 70F miner inlet temp along and proper waste heat removal will do the trick.

### Reply 9:
It depends on your environment. If you use a room in your house you have excellent insulation rather than renting a warehouse unit or something. It means that if you can exhaust all of the hot air that the miners spit out so it's not recirculated into their intake using a window in the room, and you can introduce cool/room temp air to their intakes via the rest of the house/portable AC/another window, you'll be fine.

","[
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    ""hardware_name"": ""AC"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""big fans/ACs"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""50k BTU AC"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""14,000 BTU AC"",
    ""hardware_is_owned"": true
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10945,"Date: 2021-05
Topic: Antminer repair in Canada
### Original post:
Hi Does anyone know of a site/business that can repair an Antminer T15 has board in Canada?

### Reply 1:
Look at the Zeusbtc website, there is a Canadian repair center location.<link>

","[
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    ""hardware_name"": ""Antminer T15"",
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14611,"Date: 2012-11
Topic: Using cloud based services (for free) to mine bitcoins.
### Original post:
I found this interesting news story about some white hat hackers that found a way to use the cloud to do some complex computational work. > <link> wonder what kind of hash rate you can get using these hacks.

### Reply 1:
Am I reading that right? 24KH/s? Lame.

### Reply 2:
Wouldnt it be better to place a javascript on websites and let the visitors unknowingly mine through javascript miners on the website? With enough visitors and when you dont use all cpu so that they check it you could maybe mine litecoins at a rate becoming interesting. But its only a thought.

### Reply 3:
I found this in the article.""They estimate they could use the same technique to generate more than 24,000 cryptographic hashes every second.""

","[
  {
    ""hardware_name"": ""cloud"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""javascript miners"",
    ""hardware_is_owned"": false
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9889,"Date: 2016-07
Topic: Antminer S4 blown power supply
### Original post:
Bitmain refused to replace a blown power supply in my S4 claiming I ""overvolted"" it and therefore voided the warranty. From my understanding there is a manufacturing defect in the S4 power supplies and Bitmain is supposed to replace them, however they refuse to replace mine. Before I threw the power supply in the junk I decided to take some pictures and salvage the PCI-e leads off it and take some pictures. <link>

### Reply 1:
It's been a LONG time since a batch of S4's I beleive, there were S4+'s after them. So I would guess they are past warranty date a good amount. I know that does not make you feel better but even if they did not say some reason of warrranty being violated I doubt it was purchased in last 90 day's from them.What you need to decide now is if it makes sense to buy a new PSU. Bitmain does sell them but S4's again are dated... so might be better off just upgrading to a newer miner at this point. I don't see any pictures of the machine itself was it just the PSU damaged? If so parting out and buying a newer generation might be best in my eyes.

### Reply 2:
Yes that is an old issue. i actually was the first to report this issue with my miner.. The orginal thread on hashtalk is gone along with JG. thats another story lol. Anyway.. here is the official statement from bitmain at the time.Dear customers,We are sorry to inform you that we do find a critical defect of power supply in the first batch and the first part of batch 2 Antminer S4 shipment, and have issued an official announcement on bitcointalk community regarding power supply replacement for these miners. Please find details in the following link,<link> assume you might have not came across the failure issues like other customers do as we have not yet received any info from you on the power supply problems. But we do suggest you nip it in the bud and keep an eye on your miners which seems to be running well.we decide to send you new replacement PSUs, which have been optized and improved from the previous ones and will avoid similar issues as stated in the above-mentioned link.Now please provide us with the Order Confirmation page from Bitmaintech.com of your B1 or first part of B2 S4 miners and confirm with us your full address, to which we will ship out new replacement PSUs.Ple<rest of post truncated>

","[
  {
    ""hardware_name"": ""Antminer S4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S4 power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCI-e leads"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""new PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""newer miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""new replacement PSUs"",
    ""hardware_is_owned"": false
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]"
13490,"Date: 2016-03
Topic: MinerSwitcher: profitability-based mining farm pool switching
### Original post:
ProfitLib has been updated to support Bittrex, Coins-E, and C-CEX in addition to Cryptsy. MinerSwitcher has likewise been updated to use the latest ProfitLib, which expands the range of coins it can handle.

### Reply 1:
ProfitLib now supports Poloniex and BleuTrade. Coins-E support has been removed. These changes are available to MinerSwitcher.On more of an infrastructure-type note, the source repositories for both ProfitLib and MinerSwitcher no longer use submodules to pull in their dependencies. Instead, dependencies should be installed systemwide. The easiest way to get MinerSwitcher working on Gentoo Linux is to pull in my Portage overlay (<link> and the Bitcoin overlay (<link> and install MinerSwitcher. You'll most likely need to add a few ebuilds to <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> **dev-python/PyCCEX <truncated> <truncated> <truncated> <truncated> <truncated> ~*Once that's done, build and install:Code:sudo emerge -av MinerSwitcherOn other platforms, dependencies can usually be installed by downloading the source, going into the directory, and issuing something like this:Code:sudo python setup.py install

### Reply 2:
<link> is a profitability-based mining farm pool switcher. For the set of coins you have configured, it will determine how many of each you can produce given your hardware, and determine what they're worth in Bitcoin. It will then reconfigure all of your miners accordingly. MinerSwitcher is algorithm-agnostic: you can have a mix of sha256 miners, scrypt miners, etc., and each will be switched to whatever is most profitable for it to mine.Sometimes pools go down without much notice. Before switching coins, MinerSwitcher verifies that at least one of your configured pools is still up. If it isn't, it prints a warning and moves on to the next most profitable pool. (I suspect that adding a notification mechanism (Pushover, perhaps?) is in order.) If configured, MinerSwitcher will also send Pushover notifications when a miner is down or pools aren't <truncated> is built around my ProfitLib library.Example output, right after startup:Code:Sun Oct 19 14:19:29 2014: running ProfitLibBTC 0.00835068UNO 0.00507514ZET 0.00195981Sun Oct 19 14:19:46 2014: checking BTC poolsSun Oct 19 14:19:48 2014: switching miner4 to BTC GuildSun Oct 19 14:19:50 2014: switching miner4 to EligiusSun Oct 19 14:19<rest of post truncated>

### Reply 3:
Due to the impending SJW takeover of GitHub, I've moved my code repositories to GitLab. OP updated accordingly.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sha256 miners"",
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  },
  {
    ""hardware_name"": ""scrypt miners"",
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20955,"Date: 2016-03
Topic: SoloMining setup linux
### Original post:
I am having problems getting a good connection with my s7 to a full node I just setup on ubuntu. The node is online and working. I have the entire chain downloaded, and sent some payments to the local wallet. All good. Saw confirmations on the block for the transactions. But I cannot get my miner to connect. What am i missing? Status dead. I have opened 8333 for node and 8332 for mine on firewall. Node is sitting begind NAT.- rpcallowip has the remote isp range that the miner is coming from /28 network. my bitconin.config only has rpcuser/password and rpcallowip configured. Am I missing anything?from the antminer gui:URL: <link> worker is rpcuser/passwordif I enter url: <truncated> it appends stratum info. Do I need bfgminer?Any pointers in the right direction would be appreciated. Been struggling with this for a few days now. Thanks in adv.

### Reply 1:
Did you give the rpcallowip a mask notation.... so x.x.x.x/32 or w/e.I have heard of problems with rpcallowip on other connections, may be best to sort out port triggering on router side.or remove rpcallowip altogether... somepeople use rpcallowip=* or rpcallowip=all (not good practice) but worth it for a test.

### Reply 2:
Bitcoin nodes do not do stratum, only pools do. You have to specify <link> with the address if you're really planning to solo mine so that cgminer knows it's looking for a http rpc mining port. That said, I have no idea if the bitmain cgminer forks have all the code from the current master cgminer to properly mine solo, nor if the controller in them is powerful enough to work properly.

### Reply 3:
Do I need cgminer installed? I do not. I can confirm that my bitcoin node is listening on 8332Antminer settingURL: <link> <truncated> file looks likerpcallowip = <truncated> = <truncated> = <truncated> = <truncated> = 10server = 1rpctimeout = 30rpcport = 8332

### Reply 4:
CGMiner is the mining software, the box wont mine on its own. You need to download CGMiner for whatever dist (Usually Linux is more stable) and point it at your miner with the correct settings

### Reply 5:
so you don't mine (with my S7 miner) directly pointed to a node?How does cgminer and bitcoind communicate?

### Reply 6:
CGMINER recognises your hardware S7, Then you point CGMiner at bitcoind and the S7 will mine through CGMinerCGMiner controller should be connected to the S7 so that they can see eachother(I dont have an s7, do dont know the full setup)

### Reply 7:
Downdload cgminer for linux

### Reply 8:
Will give it a go. Thanksso point miner -> cgminer (point cgminer) -> to bitcoind? Is rpcallowip still necessary for miner IP?Am I still using rpcuser/rpc password if pointing miner to cgminer? or should i use username (wallet address) and no password?Thanks,

### Reply 9:
IF my miner is sitting in a different network than my bitcoind/cgminer server - how do I get cgminer to connect to the hardware. just read through cgminer README - How can I connect a IP / network based miner. cgminer is autodiscovery for USB devices. And how does cgminer communicate with the bitcoind node - if on same machine. ""Single Poolcgminer -o <link> -u username -p password""Is this above command for cgminer to connect to my S7? What username/password should I be using. Does not look like cgminer is aware of <truncated> on bitcoind. Sorry if questions sound stupid still not clear how these tools work together. 1 - S7 Miner <truncated> should be?2- cgminer setting for: a) connection to bitcoind? b) accept incoming from S7?

### Reply 10:
in an effort to minimize the time I am banging my head with this: S7 Antminer looks like there is no support for this hardware w. cgminer.

### Reply 11:
Don't get led up the garden path. Cgminer is installed on the S7 itself already and is what mines. You do not need to download another copy of cgminer to get it working. What I was saying is that the cgminer included in the S7 is a non-standard one created by bitmain and it may not be capable of solo mining - that's what I was trying to say (since cgminer is normally capable of mining to a bitcoind node). Your most reliable way to ensure that you -can- solo mine since you are on linux is to download ckpool and create a mini pool on the linux box that has bitcoind and point your S7 at that. See my signature for links to the ckpool software.

### Reply 12:
Cool - Thank you very much for clearing that up. No wonder I could not connect the dots. So basically try to get CKPool setup and then I can use my S7 and bitcoind node to mine for those ever elusive blocks.

### Reply 13:
-ckI have installed configured and successfully connected to ckpool on my node. Mining has begun. Thank you for pointing me in the right direction. Best,sp

### Reply 14:
Should a bitcoind in a ckpool standalone configuration be set to generate coins?

### Reply 15:
As i understand, No one Solo mines without depending / trusting a 3rd party (pool) of some description. You can<rest of thread truncated>
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  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S7 Antminer"",
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11114,"Date: 2022-02
Topic: S17 PRO or +
### Original post:
Hello. I have few S17PRO machines running pr today. Got an offer for 4 S17+ at a decent price. Based on the experience i have with the ones i have today, they worked flawless for over a year. My plan is to build a immersion cooling system for them. To use all the heat to heat up water and the house. Or would it be better to look out for an S19PRO at a decent price?I would Get thie 4 S17+ For halv the price of a new S19PRO..

### Reply 1:
What exact price of the s17+ are you talking about?We don't know exactly the price of the s17+ but we do not know the price if it's worth buying and it also depends on your electricity rate. Also, be careful on someone or a website that offers very cheap miners they are mostly scammers.

### Reply 2:
The electricity is $0.02, and the price pr machine is $2100. The machines are located an hour driving from me so i have looked at them in real and have seen that they are in good working condition. The guy who has them need to sell them due to financial problems with a loan he has.

### Reply 3:
It all depends on the price if you can get a cheaper price for the s19 pro then go buy it.About S17+ the price is pretty expensive for the current bitcoin price because according to this <link> can earn $11 to $13 daily but you will never reach the ROI. Unless the price of Bitcoin goes up.

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    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19PRO"",
    ""hardware_is_owned"": false
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]"
22482,"Date: 2018-03
Topic: T9+ problem
### Original post:
I had one running for about 6 weeks when yesterday all the cards went to 0. Playing with the power supply got them back up, but only for about 20 minutes, then they went offline again.Its going back to Bitmain under Warranty Monday.

### Reply 1:
Very strange. You are missing one chain entirely, chain 3. There should be 9 <truncated> I looks like you have one bad chain on each board. Odd that one would fail on each board.I'm thinking it's probably a psu issue. Make sure none of your connectors came loose when you moved the miner. If that doesn't solve it, I would hook it up to different psu.

### Reply 2:
Thanks for the feedback. I'm going to put it back in its original location and see if that doesn't help. I read somewhere that the power circuit (wall socket) needs to be able to handle the current so maybe that is it.Yrth - I'm going to show my lack of understanding here but how did you determine that chain 3 was missing from the picture? I see that 11 and 12 are reading 0 but the others look good. I know I have a lot to learn but that is part of the fun isn't it.

### Reply 3:
Are you running it on 110v or 220v?

### Reply 4:
I'm using 110V.

### Reply 5:
could be your voltage...not saying it is but im running T9+'s for over a month on 220-240v without any hitch whatsoever...temps are 75 on chips with a a few topping out on a hot day @81 deg Celsius

### Reply 6:
Pretty sure that's your problem even if it's not you *need* to run it on 220v. That PSU isn't working correctly on 110v. That miner runs at 1432 watts, and that PSU can only put out around 1200 watts on 110.The APW3++ can deliver a maximum power of only 1200W if it is connected to a 110V mains power supply. To obtain the rated power of 1600W, the APW3++ must be connected to a 220-240V mains power supply.

### Reply 7:
I have four of the T9+'s myself. They all have 9 chains <truncated> 3 chains on each of the 3 boards, basically one chain per power plug. Your picture shows that chain 3 is missing entirely. That's why I was thinking its a psu issue. It would be odd for one chain on each board to just randomly fail.Here is a screen shot of mine.<link> that last pic, Chains 3 and 11 are missing. It's definitely your psu. The APW3++ can't produce enough power to run the miner at 110v. It either needs to be on 220v or you need a second psu for the 3rd board.(Moderator's note: This post was edited by frodocooper to remove inline image tags from the second quote from btcgumbo.)

### Reply 8:
Could be. I moved the T9+ back to its original location but didn't change anything else (all power supply connections are the same) and am currently getting this:<link> will try and change some of the power connections (from the PS to the miner) and see if that changes anything. If no improvement after that then will try 220V.Edit: I tried changing power supply to miner connections around to no improvement, Chain #12 remains at 0. Will try 220 <truncated> note: This post was edited by frodocooper to remove inline image tags.)

### Reply 9:
Hey folks, new miner here but not new to BTC. Recently received a new T9+ from Eastshore, fast shipping, etc. all looked good on arrival. I also bought the Antminer APW3++ power supply as well. Setup was fairly straightforward and I was mining soon after getting it all setup. After 24 hours all was well, hashing about 10.5 th/s but I decided to move it to a more practical location. After turning it back on the hash rate was significantly lower and after many hours searching the internet I've rebooted the unit, swapped power supply locations (same power supply, just swapped the connections around) and basically have not been able to get a different result. I'm getting about 7 th/s. I'm open to suggestions. Kinda bummed though, I was really excited about mining. <link> note: This post was edited by frodocooper to remove inline image tags.)

### Reply 10:
The other thing you could do to eliminate the miner as the problem would be to disconnect the power from one board and just power up 2 boards and of course the controller. If your ""missing"" chains appear then it would point to a psu issue. Also, do you have a meter to see the voltage being supplied to the outlet. I *think* the APW3 needs at least 208v to start (sorry from memory, not sure on that).

### Reply 11:
Thanks Yrth and all for your advice. Ok, now I'm really frustrated. I wired this up to 240 volts and am getting pretty much what I had at 120 volts. For the first day on 120 volts it worked well but has been like this since I moved it. I put it back in the original location, still on 120 v, no change. I have moved the power cables around and it doesn't change anything. Now on 240 v I'm getting this:<link> contacted Eastshore but haven't heard back from them yet. I'm open to suggestions but I don't have access to another power supply at the moment. (Moderator's note: This post was edited by frodocooper to remove inline imag<rest of thread truncated>
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10962,"Date: 2021-07
Topic: Update Node Software to Support Taproot?
### Original post:
Hey Folks - Any thoughts on what I need to do to get the Taproot support going here? <truncated>

### Reply 1:
0.21.1 supports Taproot activation, you won't need to do anything

",[]
23193,"Date: 2020-01
Topic: R4 board PCI connectors melted
### Original post:
forget bitmain.maybe hmtech can repair it.<link> helped me with a whatminer m20sthey are USA based.

### Reply 1:
I have an R4 and 3 PCI connectors melted into the power ports.Would it be worthwhile to send to Bitmain, solder myself, or look for someone in the USA to do it cheap?If you know of any services in usa familiar I'd like to know.

### Reply 2:
User ""lightfoot"" from this forum replaced burned 6-pin connectors in my BW-L21 miner back when I had it, and he did a great job.He is USA based.<link>

### Reply 3:
Yep, I have done a *lot* of those power plug repairs in the day. It's a combination of cheaper plugs on the part of the manufacturers and using power supplies that sag voltage under load (leading to higher amps at the plug which leads to more heat, etc). Then things just turn to a messy goop.The trick to replacing them is pre-heating as they are directly tied into the power planes on the board which just wick away any heat applied from a normal soldering iron/heat gun. Bring the board up to temp, then a good iron can be used to loosen the pins without worrying about damaging any of the traces on the board or pulling out the via.Make sure you flux the pins on the new plugs with something like zephlux before putting them in, always clean out the holes completely and don't force the new pins in, and of course spend the extra buck and get nickel PCIe plugs instead of the normal tin/brass ones. Nickel ones work a lot better....

### Reply 4:
To add to NotFuzzy's point, I use a touch of conductive grease when I first plug in the connectors to help with both wear and resistance.

### Reply 5:
Should add that another reason for PCIe power plugs melting is folks using the same PSU's to power a few consecutive generations of miners. The connector socket pins are rated for surprisingly few mate/unmate cycles before the plating is scraped off so repeated plugging/unplugging of the connectors is very bad. Lose the plating > higher resistance > more heating > remaining tin plating begins to oxidize and eventually things avalanche to failure. So to be on the safe side, if the PCIe connectors on the PSU have seen a lot of use - then re-pin them.Oh, and how few cycles you ask? I've seen manufacturer ratings for mating lifetimes as short as 10 cycles for el-cheapo socket pins. One does have to remember that these connectors were designed to be very seldomly plugged/unplugged as most of the time the connections are made only once in the lifetime of normal computer equipment.

### Reply 6:
I have an acquaintance that suffered the same, and he soldered himself. For Bitmain the R4 is no more, i don't know what would happen if you ship it to them, but maybe the American branch could repair it, no idea.NotFuzzyWarm might be into something, as i have never unplugged those from my R4 for the last couple of years and its doing fine.

### Reply 7:
This board shut down and the other kept going fine.They were on same psu DPS-1200FB-1 A

### Reply 8:
Board came in today and I'm taking a look at it. New plugs are on order (as I said I like using nickel plugs instead of brass) but in the meantime I thought it would be neat to post some pictures. I'll ultimately add this to a new thread on R4 repair* but unless people don't want me to I'll also post a few pics here.The board itself:<link> boards are interesting. 64 chips, a choke, and the pic circuitry. Nothing complex, but a very long board so the air can roll across it without all the resistance of a normal S9 board. You can also see some of the heat sinks are slightly mis-aligned, but worse things have happened....<link> up of the end of the board: All three plugs are badly burned. Also oddly enough it's the bottom pins that melt first, which is *very* bad. That's the ground pin, and if all of them open the board will suddenly have +12 and no ground. At which point the electricity will seek a ground and will find it in the signal cable. Which will then burn open, damaging the board's circuitry and possibly the controller. Yuck. You can also run into the situation where the ground vias are burned to the point that there is no conductivity, in which case one has to build a new gr<rest of post truncated>

### Reply 9:
Hm. Wonder why the second and third pictures aren't showing up. Anyway took the bad plugs off this evening and cleaned up the board. One of them burned right through the connector and into the board. Fortunately there isn't a ground plane short, so I'll clean it all up tomorrow and wait till the parts come early next week.The plugs off the board. Typical mess, what happens is when one pin fails the rest of them have to carry the full load. As more fail, the remainder get hotter and hotter. My guess is the center one on the really burned plug was the ""last to go....""The board after removal. The top pad is warped a bit from the plug burning out, but as I mentioned there is no ground fault so it sho<rest of thread truncated>
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16107,"Date: 2021-07
Topic: Best mining farms in US/CAN
### Original post:
Hey guys,looking to expand the operation a bit but my current farm is full.What farms do you guys use? I'd need VPN access to the miners. Staff on site would be a plus but that seems to be standard anyways now.Thanks!

### Reply 1:
Send me a pm

",[]
16574,"Date: 2023-08
Topic: How can i start bitcoin mining?
### Original post:
I will really like to know if there are other step of mining bitcoin apart from these step?When you choose and set up your bitcoin mining hardware.And to create a dedicated wallet.And as well configuring your mining equipment.

### Reply 1:
Don't expect anyone to teach you everything step by step here on this forum.Try using google, or YouTube for this general topic and I am sure you will get an idea of how to start mining Bitcoin.Once you are aware of the basics, you should be encountering some intermediate issues and then you can refer to this forum.People will be very happy to help you if you try to help yourself a bit.Some popular Google results of your query:1. <link> <link> <link> <link>

### Reply 2:
thanks..i just like learning from already experience persons

### Reply 3:
Your post is quite broad and doesn't really give us much information to work with.In order to get the most helpful responses, I would suggest asking more specific questions about the aspects of bitcoin mining that you're interested in. For example, if you're considering different types of mining hardware, you could ask for recommendations or opinions on which brands or models are most <truncated> if you're unsure whether to try solo mining or join a pool, you could ask for advice on the pros and cons of each approach.By asking more specific questions, you'll be able to get more detailed and useful responses from the community. Good luck with your bitcoin mining journey!

### Reply 4:
We already have a guide here for newbies who wants to start Bitcoin mining for the first time not only the guide posted above but you can start by reading this ""First time/Small miner reference for getting started.""This should be the first part before you buy an ASIC unit and mine.

### Reply 5:
To start Bitcoin mining, you will need a Bitcoin wallet,a ledger is the best choice, mining software, and mining hardware,asics are expensive. you will need to download and install mining software on your computer. Once you have the software, you can start mining by using your computer's processing power to solve complex mathematical problems that validate Bitcoin transactions and earn new Bitcoin. You will also need to build or purchase a mining rig(asics), which is a computer specifically designed for mining cryptocurrencies. It's important to note that Bitcoin mining can be a competitive business, but the equipment can be a lot expensive

### Reply 6:
Do you think it's that easy to get started with bitcoin mining set-up in this field? The question here is always how much electricity do you consume in KWH? Before, I also tried, even though I have money to buy mining rigs because of a relative of mine who will help me in buying it, that's why the consumption of pe kwh of my electricity is at 0.2$ I'm almost at a loss if my plan worked. I can ask you this, but if your consumption is at 0.05$ kwh or below, maybe somehow you have a chance to earn bitcoin.

### Reply 7:
Yes but no. There is no software to install on your computer, you just need one or more ASICs, and you need a internet source. You can then access the interface of your server via its IP address but no specific software is necessary.You have to stop saying all the time that mining is ""complex mathematical problems solving"", it's totally wrong. It is closer to bruteforcing than to solving a complex mathematical problem. This is a preconceived idea that is totally wrong.Otherwise, to answer OP, the only intelligent way to consider mining is to know your electrical cost per kw/h, to understand the basic notions (difficulty, luck, types of payments according to the pools etc...), and to know where and from whom to buy your equipment so as not to get ripped off.The only advice I can give you is not to be impulsive and to inform yourself a lot before spending money, because a bad choice could cost you a lot of money.

### Reply 8:
It is necessary to mine with asics. Video cards are unlikely to give income

### Reply 9:
any mining pools still active?

### Reply 10:
You gotta be trolling right?You've never heard of Antpool, FUpool, ViaBTC, Kano.is etc. A simple `net search will probably turn up more than a dozen...

### Reply 11:
You can find good information on how you can start Bitcoin mining on various popular search websites. And all those websites are very well mentioned how you can start bitcoin mining. To start Bitcoin mining you will first need some Bitcoin mining equipment. First of all you need a good quality computer for mining, secondly you need to install a good mining software. Bitcoin wallet will be required and you will need electricity for mining and some other necessary items you will need to collect for mining.

### Reply 12:
Wrong.Having a decent PC and 'mining software' has NOTHING to do with mining Bitcoin. ref <link> mainly point-3The PC and software only applies to mining altcoins and this area is exclusively d<rest of thread truncated>
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21194,"Date: 2016-12
Topic: Quick Question: IP issues
### Original post:
Quick question for the community. I have 40 ASICS I'm wiring up as we speak. I'm searching ISP options. I'm using a TP link 48 port switch. My question: Can a standard residential ISP be used for this? They say I can have up to 13 IPs (pay extra), but when I go to hipster coffee shops I see 30+ people all on the same wifi. I know all the connected devices are sharing one IP address. So second question: Can the miners all go through one IP or do I need an individual IP for each miner connected to the 48 port switch? There are commercial ISP plans available, but they are rather expensive. I would like to be sure on this before I agree to a yearly contract. Feedback appreciated, thanks peeps!

### Reply 1:
You need to understand how DHCP works. Your router can feed dozens of DHCP addresses 192.168.1.? to your miners. You don't need a multitude of public-facing IP addresses. One will suffice.

### Reply 2:
That's all I needed thanks!

### Reply 3:
You talk about a switch, but you don't mention a router. You need a router to accomplish what you want unless the switch has DHCP capabilities.

### Reply 4:
This is the switch I purchased: <link> was thinking I would connect the machines to the switch and be good to go. Can you suggest a router to go along with this setup?Keep in mind the switch will connect to the modem which has a built in router.Do you think that's good enough?I would love to hear your opinion.

### Reply 5:
You probably want to use a firewall appliance to feed that switch from your internet connection, NOT just a router.<link> the option I use now - it replaced an old K6-based LINUX machine (which I still have as a backup).This unit is both a firewall *AND* an 8-port switch in one box with some management options I mostly don't need.

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13522,"Date: 2016-08
Topic: Am I missing something? You understand better!
### Original post:
I'm experimenting with Open Source code available on Github (<link> to run a mining pool.We got everything working and started mining with everything deployed on Digital Oceans server having 20 CPUs and 64 GB RAM. But as soon as we connected enough miners to reach 1 PH/s, we started getting socket errors and the CPU usage crossed 80% and the miner connections started dropping off.Next, we shifted the entire setup to AWS using a c4.8xlarge instance. Now we could reach only upto 800 workers (3.7PH/s) and similar problems started coming up.I did a little digging into the setup and here is what it contains1 Bitcoin Server (a full node which runs in the server mode and accepts connections through the RPC protocol) - runs using bitcoind - Is one of the concerns as it is single threaded and I am unable to run it in a multi-threaded way.1 Node Stratum Server <link> - this connects to the bitcoin server above using rpc and this also eats up a lot of CPUNode Servers for Frontend / Payments / etc - this works fineNow, that we have the overview of the scenario and the problem.Here are the questions that come up to mind:1. Can we run bitcoind in a multi-threaded way?2. Can we run bitcoind in a <rest of post truncated>

### Reply 1:
You're running shit pool software. Try ckpool (see my sig).

### Reply 2:
Well, I appreciate your inputs here. But, it seems conflict of interest to me. I'd be really thankful if you can help me point of mistake or comment of question raised. Thanks ck!BTCIndia

### Reply 3:
Conflict of interest to provide you with free software... okay

### Reply 4:
Hahaha! NO. Not with that...I'm sorry. I didn't knew it was free. I thought, you were inviting me for something else. Please accept my sincere apologies! P.S. Answers to questions are much appreciated considering your vast experience and skills.

### Reply 5:
None with answers?

### Reply 6:
Hi Try switching from UNOMP to MPOS. If in not mistaken UNOMP has poor worker management which might explain why you can only reach up to 800 workers. You should have a much better experience with MPOS.

### Reply 7:
Switch to ckpool like -ck said. UNOMP is inefficient and not suitable for large farms.

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24016,"Date: 2022-09
Topic: Antminer T17 - Stuck on troubleshooting where the error is
### Original post:
Hi all, I'm both new to the mining experience and also to this forum...I stumbled upon a Antminer T17 the other day, throwing an error, so the price was right, and I could not resist to buy it I'm quite used to try and troubleshoot things from my daily work, but since I'm quite new and unexperienced to mining, I need some expert help on getting by right now.I will try to explain what I've done;First startup (Also se part of kernel log below):All 3 boards in the T17 connected as ""standard"";- 1 card mines- 2 card does not mineRestarting with all only card ""1"" connected to socket 0 on the control card;- Card ""1"" minesRestarting with all only card ""2"" connected to socket 0 on the control card;- Card ""2"" minesThe kernel log for ""First startup"" gives me this info:2021-05-08 20:26:18 <truncated> chain[0], voltage is: 17.034316 2021-05-08 20:26:20 <truncated> chain[1], voltage is: 16.513857 2021-05-08 20:26:23 <truncated> chain[2], voltage is: 15.558662 2021-05-08 20:26:23 <truncated> aveage voltage is: 16.368945 2021-05-08 20:26:23 <truncated> now set voltage to : 17.000000 2021-05-08 20:26:23 uart.c:80:set_baud: set fpga_baud = 115200, fpga_divider = 262021-05-08 20:26:33 <truncated> Cha<rest of post truncated>

### Reply 1:
I find it hard to understand this part, it could be your explanation or I am just getting old, but my best guess is that all hash boards work fine as long as you only run 1 hash board!If the above is correct, then your issue is most likely a bad PSU or low AC input voltage.

### Reply 2:
From the log you posted, it looks like none of the boards are working when they are all connected. For the hashboard to work, all 30 asics need to be found. Code:2021-05-08 20:26:52 <truncated> Chain 0 only find 0 asic, will power off hash board 02021-05-08 20:27:24 <truncated> Chain 1 only find 12 asic, will power off hash board 12021-05-08 20:27:55 <truncated> Chain 2 only find 0 asic, will power off hash board 2The <truncated> messages shows the measurement from each hashboard of the PSU voltage. There is only one main supply voltage, so the three boards are measuring the same supply voltage. It could be the PSU is just shutting down and the 3 measurements are showing the voltage drop after the supply shut down, notice from the timestamps that there are a few seconds between each reading. Code:2021-05-08 20:26:18 <truncated> chain[0], voltage is: 17.034316 2021-05-08 20:26:20 <truncated> chain[1], voltage is: 16.513857 2021-05-08 20:26:23 <truncated> chain[2], voltage is: 15.5586622021-05-08 20:26:23 <truncated> aveage voltage is: 16.368945 2021-05-08 20:26:23 <truncated> now set voltage to : 17.000000 From the little info you've given, I'd guess the most probable problem would <rest of post truncated>

### Reply 3:
Ok, so I decided to pick the machine apart and clean it, and man, there was some stuff in there that probably shouldn't be...I guess they don't put mosquitos and bees in there from the factory? Anyway, I compressor aired the loose parts, (spray)cleaned them with electrical cleaning spray, compressor aired again, put togehter, waited a day before start up.So now, whenever I run the machine, and troubleshoot it by moving the hashboards to different slots in the ""controlboard"", moving the datacables to different positions etc, I end up getting the same results;- Find 0 Asics on chain 0- Find 12 Asics on chain 1- Find 0 Asics on chain 2So for the board on chain 0 and 2 I will try the folllowing this video <link> with help of some additional info in the comments field of the video.Kernel log at the moment with all 3 boards connected (Shortened due to character <truncated> Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction c<rest of post truncated>

### Reply 4:
Some more <truncated> measured and got 232v from the outlets to drive the T17.Board 2: No action taken yetBoard 1: I removed the cooling alu on chip 12 + 29 and 30 (counting from incoming electricity)There were 2 solder balls that I removed on two different chips.Board 0: On this one I've removed all alus and measured some resistance towards ground.I've found one place on the board that I feel is a bit suspisious;When measuring from the red areas (to ground) in the picture below, I get the following readings:1: 6.7 kOhm2: 6.87 kOhm3: 6.7 kOhmAlso some of the other measure-points at the ""1, 2, 3"" places differ in the same way when measuring towards ground; pos 2 does not follow the pattern.Could it be that this specific chip marked in black is faulty?<link>

### Reply 5:
Now I believe something is going in the right <truncated> update:I upgraded the os to try and get some more info, <rest of thread truncated>
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11099,"Date: 2022-01
Topic: Help with Antminer S15 power supply
### Original post:
I have 3x S15 and 2 of them the power supply just took a shit in November, I sent them off to myrig for repair and they cant fix them. So now i have 2 miners and no power supply. I've looked everywhere and i cant find any APW8 power supplies 16.32V - 20.04V.I was looking around and noticed that the APW9 is 14.5V-21V and looks like the same hookup as the APW8 but it has 2 input ports for power so my question is will the APW9 work on an S15 miner and why is there 2 power ports does that mean i need 2x 240v lines for each power supply if i was to use it?If nothing else where can i buy a APW8 16.32V - 20.04V

### Reply 1:
Have you tried to ask ZeusBTC for repair?Or stocks for this unit?You can try ask ZeusBTC and maybe they can repair this PSU or maybe they have a few stocks of them. Check them here <link>

","[
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    ""hardware_name"": ""APW8 power supplies 16.32V - 20.04V"",
    ""hardware_is_owned"": true
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11083,"Date: 2022-01
Topic: s17+ Simultaneous failure of all three hashboards
### Original post:
Good evening allI recently purchased 2 s17+ boxes, in used, but good condition (cosmetically anyway).Each was checked on collection and everything seemed to be absolutely fine (30 min test, hashrate as expected, kernel logs 'normal', temps and fans again normal).Having moved the boxes to their new home (200km drive - well packed) one of the boxes stopped hashing after approx 2 hours and despite best efforts, it has not recovered.Having restarted the problematic machine, logs indicated 0 asics found on all 3 boards.Reinstalled firmware (June 2020) no change.Contacted Bitmain support and got a link to factory firmware, no change.Updated to latest firmware, no change.Now running Braiins (from SD), no change.The other s17+ (which this one is installed next to) is running perfectly, so I dont think this can be an environmental issue (box ~58, chips ~72, fans all 3k)I could understand 1 board failing, but not all 3, and not at the same time?I do have the opportunity to switch out the hashboards between the 2 units (in case there is a controller or PSU issue) however I do not have much (any) experience with this hardware, and although the process looks relatively straight forward, I am so<rest of post truncated>

### Reply 1:
Yes if one hashboard is failing it could affect the other 2 hashboards if you want a better analysis for this unit I suggest you post the whole kernel logs here. I guess that hashboard have a connection issue replug all cable PSU and ribbon cable from the control board and hashboard should fix this issue.You can also try running them one by one if you suspected the PSU just disconnect the two hashboards and run only one hashboard to test which one is running fine.Also, check the PSU connector and test them one by one and then update here the result including logs.

### Reply 2:
Im so glad I sold all my S17+ last year. They are all garbage quality, but thats not what you want to hear...I would carefully try each hashboard one by one in the working miner to see if any hash. If the ALL hash it is certainly a power supply/controller issue. Buy extra PSUs/controllers for these machines.... If 2/3 hash, the bad board is killing the good ones and not allowing the unit to work. Could also be a controller failure. You could try the good controller with the good hashboards (after testing) and see if that works. Swapping controllers sometimes works.

### Reply 3:
Thank you BitMaxz and JonnyRocket for the replies.As suggested, I removed (and air cleaned) all three boards and tried them one by one. All three work. Plug them all back in an 2 out of 3 work. Swapped the ordering in the unit, to find the same board fails. Swapped that one board into the other unit that was working fine, and not surprised to find that now hashes on 2 of 3 (incidentally I put the one I pulled from the working unit into the 'bad' unit and that runs 3 of 3). So it would appear that I do indeed have one bad board, and having cleaned and fiddled with all the connectors whilst testing, I am now in a position where it does not prevent the other 2 boards from working.I found it odd that the 'bad' board did work when it was the only board in use, however I only let it run for 5 or 10 mins before continuing testing with the other boards. I want to run that test again for a longer period, then I will get some logs on here once Im happy I have done everything possible from a physical point of view.T

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10888,"Date: 2020-05
Topic: T17e review.
### Original post:
I had two t17e units arrive.some photos numbers etc to follow.about 53-55 th3356 watts on one meter13 amps on a pdu meter. which is 3120 watts.

### Reply 1:
spacerfront view s17+ on left t17e on right. the t17e has a bigger psu and a smaller case for the controllers17 pro side view note the control is shorterpsu for s17 propsu for t17et17e on left note the psu is taller

### Reply 2:
easy to see taller psu and skinny controller case on the t17e the unit on the left.this is the t17ethis is also the t17ehere they are miningI will post numbers again.but t17e seem to be in the 53-55th area.the s17pro on low is about 43thI have 2 measurements on power for the t17e 3356 watts and 3120 wattsthe 3356 is on a killawatt style meter this reads highthe 3120 is on a pdu the pdu reads lowso 3120/54th = 57.77 watts a thand 3356/54th = 62.15 watts a th57-63 watts a th range for a t17e53-55th hash rangenote a one speed unit.the controller for the s17 and s17 pro is this one.<link> psu for the s17 and s17 pro is this one.<link> label on the t17e psu reads apw9+the label on the s17 pro psu reads apw9

### Reply 3:
Great info and nice pics, how do you find them to react to hot/cold air?I got my second s17e 64 and its behaving the same as the first , I cannot explain it so I figure id ask (the s17 pros do not behave this way)I live in Canada and its 0 C currently if I plug the miner beside and open window for air intake the second hashboard never boots up only 0 and 2 showingexactly the same as the first s17e I received, move it down on the floor and it runs fine, put it back by the window and same hashboard 1 doesn't boot upturn it sideways so its not sucking in cold air, works???secondly the hash is always lower with colder air avgs 63.5 by the windows fans 3800 and 4800 and 67.4 on the floor fans 5600 5700issue is its sooo loud much louder then the s17 pros running normal or turboit also heats up a 450sq ft basement in no time from 20c to 25.5C the two s17s never managed to get it over 24.5 (even on colder nights)I know the unit Is not detective as the previous was the samehow's them t17e are they rock solid? You had a couple days to play

### Reply 4:
Edit Last night was cold -3 c or 25-26f. I had an issue with 1 unit not working.I went to solar array today added an s17 pro so there is now 8800-9000 watts used in the spot The 17e fired up. I will monitor this until Monday or tues or Weds after thanksgiving then move gear to Clifton NJ the room there is warmer air is filtered and still have good venting to keep it under 85f or 30cOkay they are in buysolar loft which is the first solararray. this is an unheated spot.been -2 to 10c outsideloft has good ventilationso at 27f to 50f it runs very well been up for 2.5 days doing 53-55thI would guess space is getting warmer and may be closer to 60f or 15c since I am running 6600 watts or25000-27000 btu of endless heat. These will be moved to Clifton after Thanksgiving.I will not buy anymore of them as I do not like 3000 watt units.I will end up with1x t17+2x t17e2x m20s1x m21s2x a1066 these 8 pieces will pull 27000 watts. and put out 100,000 + btu

### Reply 5:
I am bummed out...two 53th T17e were send from China, NOT Malaysia or Singapore.S17e as well, so double whammy (27.6% tax), darned it.Also why Bitmain sends it on Thanksgiving when everything is closed? Ridiculous.

### Reply 6:
I have to check the boxes to be sure. Yeah I think the s17 pro are far better then any unit I have.

### Reply 7:
im kinda glad i didn't get the s17e or + it looks to be a beast but not super efficient, cargober with tesla watt got me a great deal 1750 shipped s17 pro , only using 9.5 amps @ 240v pushing 55+ th,the turbo setting is lack luster, the boards were doing 18th each , on turbo they went to 19.5 th each, and the uint was drawing 10.2 amps @240 vso the turbo setting is not worth it , but i cant wait till slush pool adds the s17 sires to the Braiins Os Firmware, i like the real-time graphs and such with out having to refresh the page to see the real time shares and est hash rate and temps i didnt get a chance for coupons but i dont plan on ordering in the next few months so now i have 7x s17pro @ 385 th and 14 s9/s9i's doing 196 th , starting to make a dent

### Reply 8:
Not happy with mine and they owe me serious refund on them as I paid them 3600 and they dropped to 2735. 865 due. They pull a lot of power. Taxed them at 102 or 103. They pull more power then first mentioned and they no longer show power specs. So basically don't get them.

### Reply 9:
Tax at 102-103 when coming from China? that would be awesome.

### Reply 10:
I recently was told that the only difference in all these different ""S"" models is that when the Chip orders arrive, Bitmain tests them. The most efficient chips from the foundry are assembled into the ""Pro"" units and the less efficient chips are earmarked for the T's and E's and etc etc. I don't pretend to know about<rest of thread truncated>
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21100,"Date: 2016-07
Topic: Newbie questions regarding the Antminer S2
### Original post:
Hi there,I'm pretty new to bitcoin mining and I manage to find a ""good"" price on the antminer s2. I'm curious on if it's still worth it, considering it's humongous power usage I'm having my doubts.Am I overthinking things perhaps? Could you guys direct me in the proper direction?Kind regards,DJM

### Reply 1:
With an S2 it's pretty simple.Unless you have free or close to free (under 4cents/kWh), it won't be worth it.Have you thought about shipping prices too?

### Reply 2:
well I get it for 70 euroes and no shipping.. but yeh power seems too expensive

### Reply 3:
As inefficent as the S2 is, your electric needs to be FREE for it to be profitable at all - and that's going to be a very small profit for a lot of electric used.

### Reply 4:
well that answered my questions ^.^ thanks for the information I'll keep looking for another deal

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23653,"Date: 2021-08
Topic: S17Pro PIC replacement on hashboard
### Original post:
I have an S17Pro hashboard which I believe is in good working order, other than the PIC has <truncated> 19:11:49 <truncated> Chain[0] PIC init failed!2021-08-09 19:11:49 <truncated> <truncated> 19:11:49 <truncated> chain[0] PIC jump to app2021-08-09 19:12:05 <truncated> Check chain[0] PIC fw <truncated> 19:12:05 <truncated> <truncated> 19:12:05 <truncated> stop mining: soc init failed!2021-08-09 19:12:05 <truncated> cancel thread2021-08-09 19:12:05 <truncated> ****power off hashboard****Does the above confirm a failed PIC? I do not have the means to reprogram, but I have stacks of dead S17Pro hashboards (with potentially good PICS). So my question: is it feasible to replace the PIC itself? I have an SMD rework station and a steady hand. Also - how to identify which IC is the PIC?

### Reply 1:
Not at all, it doesn't.Did you buy this new or was it owned by someone else? the reason why I ask is that because some custom firmware will f the PIC and cause it to show 0xff, if you are lucky, a different firmware might fix this, it's highly unlikely that this is a hardware issue.It will be something very close to this My advice is, don't take the hardware path before trying the software, if different firmware doesn't fix it, order pickit3 for $18 and extract the hex from another hash board, if that does not fix it, then replace the actual PIC IC.

### Reply 2:
This board is from a miner I purchased second hand several months back. It has been running ok on standard Bitmain firmware for several months, but more recently the board has been dropping in and out. I have been consolidating hashboards in my S17Pros as they gradually die, and moved this board into a different miner (with two other working hashboards) but I found that the miner just ignores this board but runs on the other two fine. I noticed the unusual firmware version and the fact that all the rest of my S17Pro have different firmware versions and wondered if it was some kind of failure of the PIC.

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22946,"Date: 2019-05
Topic: Latest Innosilicon SSH Password?
### Original post:
I recently upgraded my 80 Halong T-1's to t1_20190311_114300; however, it seems like none of the past Innosillicon admin passwords work and I'm trying to automate reboots via Awesome miner (easy if I know the password).Any out there know it or have it?Thanks!Chad

### Reply 1:
I take it you tried innot1t2 or t1t2t3a5 or blacksheepwall

### Reply 2:
Yeah, tried all three of those. I'm guessing they changed it again. Guessing they also changed it for other new firmware for the T2/3 and other miners but I only have A4's and T-1m's originally of Halong branding.

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    ""hardware_name"": ""A4"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T-1m"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""T2/3"",
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16068,"Date: 2021-05
Topic: Can you solo mine & pool mine on a single Raspberry Pi?
### Original post:
I'm building 2 USB Mining rigs for fun. One of them is going to be used as a ""lotto"" rig (just a couple of block erupters pointed at ckpool), the other is going to be a couple of Overclocked newpacs mining regularly. Trying to get 1TH out of it for a super low power & silent mining rig.I was going to buy another Raspberry Pi & run em separately but before I did that I figured I should ask if there was a way to do this with just 1 Raspberry Pi.Thanks!

### Reply 1:
cgminer has many options explained in the README that would give you the answer I'm providing if you were to read it ...If you configure more than one pool, you can tell cgminer to mine to both at the same time or even specify the % for each of the pools.To allow equal mining to all pools, the basic option is ""load-balance"" instead of ""failover""

### Reply 2:
Interesting project. You want to have a bench of RPI4 mining SHA256 with cgminer if I've well understood ?Keep us informed please Have a nice day

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23963,"Date: 2022-06
Topic: inlet and outlet temps vs chip and board temps
### Original post:
Hi,How do you compare a T17 chip temp 80C to an inlet temp of S19? Is it even comparable? I'm asking this to get an idea on what my S19 temps be like when I get one. I currently run a T17 immersed with chip temp 80C and board 50C, fluid temp is 40C.

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24153,"Date: 2023-08
Topic: Ask for help on the failure of the antminer 17 series temperature sensor
### Original post:
Hi, everyone, I am a miner from China, I have a large number of T17+ and S17+, they often have the problem of temperature sensor reading failure, I want to get your helpI often encounter the problem that a certain computing power board reports that the temperature sensor fails, causing the board to fall off and fail to operateI found that the 17 series mining machine has two sensors, one is TMP451, the other is NCT218, and the operating voltage range of these two chips is not the same, the former is 1.7~3.6V, the latter is 1.4~2.75V, And when I use the maintenance mode of the third-party firmware, it will show the NCT218 chip when it is normal at the beginning of the test, and it will show the TMP451 chip when there is a problem and the temperature sensor is lost. I dont know if there is any connection between them.

### Reply 1:
If you don't mind would you mind to share one of your miner's logs so that we can analyze what the cause of the temp sensor to fail?Sometimes the temp sensors are not the cause of why it fails it is sometimes due to the ASIC chip I suggest check the test points and find the broken chip. You can follow the guide from this link below- <link> all test points are fine then the sensors chip is the cause of this failure you can replace it with a new one available on zeusbtc.

### Reply 2:
I have a whole dedicate thread regarding the temperature sensor on the 17 series, you fill find a lot of useful info in there.But to give you a bit of a summary:- The part number of the temp sensor is TMP451AIDQFR.- It's most often a chip/solder issue on one of the chips rather than a temp sensor.- if all temp sensors on all boards are acting weird then it's most likely a bad PSU.I had a long 'terrible' experience with those gears, and as weird as it sounds, 90% of the issues are caused by bad contact between the chip and PCB, the medium temperature solder used on those gears is terrible, the robots/human beings who soldered the chips did a terrible job, you are guaranteed to fix the majority of the problems (regardless whether it shows a bad temp sensor or missing chip) by simply reflowing all the chips and making sure there are no solder balls built up on any of the chips and shorting the chip.If you confirm that it's indeed an issue of bad temp senrsor/s, refer to my topic to know their exact locations, also here is a short video showing a replacement of those temp sensors

### Reply 3:
My friend, thank you for your suggestion, I know this company, but I dont need their components, I have my own channel to get the goods, their prices, you know, I have a lot of scrap machines that I can dismantle Chip, I have carefully studied the maintenance instructions of all series of 17 a long time ago. I even have the original circuit diagram. I have a headache for this damn temp-sensor problem. I agree with your point of view through analysis, its his mother There is a problem with the computing power chip, and there is a problem with the welding process of Century Cloud Core. They even sprinkled rosin solution on the 17 series computing power board and re-soldered it. Maybe the board you saw with UV glue is that batch.In addition, I am using HulkOS, and his logs are not the same as Bitmains official firmware. I dont know how to upload attachments to this forum. It seems that it is not good to post large sections of logs.Try this to see if it can be opened. This is the log of the same machine. It is normal to read the temperature sensor as NCT218 at the beginning. If it cannot be read later, it will default to TMP451 and start reporting an error.<link>

### Reply 4:
Gave you a merit. it will help you be active on this forum.here are your logs:

### Reply 5:
I never heard of HulkOS before but the image shows the wrong sensor type and then calibrate temp sensor failed.Is this only happen in chain 1 or does all hashboard have the same error?What steps that you already tried? Did you recently replace the miner with a new hashboard without a code editor or Pickit?If you already tried changing PSU as suggested above and if this is not a hardware issue then can you try dumping the PIC firmware from the other 2 known working hashboard and then flash it to this hashboard(chain 1)?Don't forget to dump the PIC firmware first from (chain 1) just in case you can revert it back to its original state.

### Reply 6:
I have carefully read all the replies under that post, and I have also carefully studied bitmains official maintenance instructions and the circuit diagram of S17. The 17 series hosts do not only have a model of TMP451. Among the 17 series models I have encountered so far, there are at least NCT218 and TMP451 two models, I found through the detailed log of my third-party firmware that he will first read the register of the temperature sensor, then obtain the device type of the sensor, that is, the model <rest of thread truncated>
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11179,"Date: 2022-07
Topic: Antminer S17 Pro 53TH Hashrate
### Original post:
Good Evening, had a question for the Group. Have an Antminer S17 Pro 53T. When it boots up starts hashing normally then all 3 boards go down to 0 hashrate within the first two minutes. Connected to nice hash asic boost server.All help would be greatly appreciated.

### Reply 1:
Have you checked your power supply or control board? Since the startup can be hashed normally, I think the probability of three hash boards having problems at the same time is very small.

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11116,"Date: 2022-03
Topic: NBTC?
### Original post:
I can across these heat sinks anyone used used them? worth it? Seems like a hell of way to fix the failure rate of the 17 series heat sinks. <link> would be able to offer doing the labor? I would love to do at least 1 board in my S17, as Bitmain said they wouldnt fix my 1 board with 5 heat sinks that got removed.

### Reply 1:
That offer is pretty expensive I don't know if someone will take that offer just to fix or replace the heatsink.Actually, you don't need to hire Bitmain or someone to reattach the heatsink back to its position you can do it with your self you just need to buy a thermal adhesive to put them back to the hashboard.

### Reply 2:
$300 shipped to the US is very expensive.That is almost what it would cost to have a CNC place do it here.Yes I know you would need to design it, and create the CAD drawings and so on. But still that is US cost not China cost.-Dave

### Reply 3:
Considering it because Bitmain wont fix a board of mine because ""one has too many heatsinks fallen off"". Any updated thermal adhesive I should use as I will attempt to fix it once its returned to me. I've seen the arctic thermal adhesive suggested but seems to be discontinued on <truncated> I might poke around with a solution. If I'm designing it then the design can probably done without having to tin anchor point on the board.

### Reply 4:
Those heatsinks look like a great way to destroy a hashboard or power supply.Bitmain's individual chipsinks are held to the chips using a low-temp-process solder, probably something bismuth that melts around 140C. That's why so many people have problems with them falling off. In order to support solder, the top surface of the ASIC is copper plating pretty much right over top of the silicon die, which gives absolutely phenomenal heat transfer characteristics. However, the copper plating is internally connnected to ground. One of the failure modes of a hashboard is a heatsink gets loosened then drops to short between the chip and a heatsink from an adjacent row, which operates at a different voltage potential because each ""domain"", that is to say each row of chips, is put in series.So unless you're 100% certain that the thermal compound you're using is non-conductive and you're 100% certain that your coverage won't thin out such that you're 100% certain there's no contact between heatsink metal and chip plating metal - and you're 100% certain the screws that are mating into a nut soldered to local ground planes also aren't contacting the heatsink metal - I honestly don't see how this<rest of post truncated>

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16356,"Date: 2022-10
Topic: Will there be more efficient mining hardwares?
### Original post:
Looking at the history of bitcoin mining and how the technology behind it has progressed continuously over the years, Can we expect more efficient miners than the ASIC miners soon? Miners that will be faster, less energy consuming and will produce lesser heat.<link>

### Reply 1:
More efficient and faster - yes there is still a slight amount improvement that is possible by using the 3nm node provided that Biitmain, Canaan, et al think it is worth the multi-millions of $$$ it would cost them to develop the chips for it.Use less power (which = less heat) -- no. Miner manufacturers have zero incentive to make lower power miners as their biggest customer base- farms - are perfectly happy with ~3-5kw per miner. So, the makers will just pack more chips in the miners to hit that power usage point just they have always done.

### Reply 2:
If you can make more efficient and smaller chips just pack more in there. I like the idea of the liquid cooled bitmain, solves allot of problems.

### Reply 3:
I was actually wondering if they are going to go bigger and bigger for more industrial locations. 3 to 5 Kw is nice but if you could I would think larger is better.1 mega-miner so to speak. Let it take up a full rack space or 2 and you drop in 100A 220V power at the top and be done kind of thing. It is in theory a single point of failure for a lot of hash-rate which would be bad. But on the other side, it is just 1 device instead of 10 to deal with.-Dave

### Reply 4:
This would be a problem for many large miners, most mining PDUs out there use c19 sockets, the largest PDU i saw was rated at 4.1kw max per port at 220v.They use a split cables c19 to 2*c13 to run Bitmain gears and c19 to c20 to run WhatsminersThe most common set up is 24 ports, so one PDU, 24 gears, max is 4.1kw they use 3.5kw at most so pretty safe.Pushing past this will cause two issues.For Whatsminer since they use a single PSU, you need to change the PDU (about 600$ for managed metered and 300$ for basic).For Bitmain, you can use the same PDU with no split cables but then you lose half the number.Besides, all the cables running from the distributer box will likely need to be re-sized, thats a ton of work.Besides running 5kw will probably require 3 phase set up, so all in all, i can only see them do such a thing with things like the s19 hydro where you buy the whole package pre-wired and just feed 3 phase wires to the container, but using these existing set up will be very costly for most people.

### Reply 5:
Yes and no, I was thinking of a miner in a footprint like one of these that are used in data centers everywhere:<link> feed the power in from the top or bottom depending on the cooling setup and if it's a raised floor or not and that's it.For the most part you can get 2 or 3 phase or whatever you want. As I have said a few times before, there are a lot of empty data centers out there with power and cooling and so on. If you can just roll in the miner cabinet, roll out the empty server cabinet, wire it up and go it would seem like an easy sell.I could just be missing something but it's a standard size / form that has been around for decades. Would think it would be a simple way to do it.-Dave

### Reply 6:
Migrating a data center to a mining facility isn't the best idea in the world, the power consumption of miners is way too high compared to those regular servers, the bottom line is that you can't easily find PDUs that can supply 5kw per socket, most currently used PDUs will be capped at 4kw at best, so a lot of re-constructing will need to be done to be able to run 5kw gears which is why I don't think they will ever make anything like that.Also, most data centers probably use 42U racks instead of 48u, but then, either way, going with the assumption that the average server consumes no more than 500w, we are talking about 25kw per rack enclosure (which I am sure is a very rare as most of them will not be above 10-15kw), that would hardly fit 4*5KW machines, in size of 2258cm x 750cm, a lot of space wasted.So in terms of space and power, if a data center has access to excessive power, it would be best to just get rid of those racks and install normal mining shelves + new electric wiring, but do data centers really have any power to spare? I mean looking at the data it seems like Facebook which has one of the largest combinations of data centers only uses 50MW of power, where does that<rest of post truncated>

### Reply 7:
I was thinking more about cost and simplicity. Most data centers probably can't fully power and cool everything if they were all miners.BUT, once you start changing floor layout and the high power wiring you are changing the dynamics of the facility.Once you start going down that path you hurt the potential resale value of the facility and can limit options later.There are a lot of data centers out there that started as top of the line places and st<rest of thread truncated>
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    ""hardware_name"": ""42U racks"",
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    ""hardware_name"": ""48u racks"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""mining shelves"",
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23017,"Date: 2019-07
Topic: M3X Hashboard Problem
### Original post:
Hello,Today one of hashboard M3X is not working, status of device is Alive but GHSav is 0.00..First when it was not working with one restart it started again but now its not.Also hashboard is hot, frequeency(avg) is 192, EffectiveChips 0, Temp1 32.00, Temp2 0.00When an hashboard is dead, will it be ""Dead"" status?Contacted seller and he told me is connect loose so I must re-plug control board but still is not working.Please if someone can help me, I will really appreciate it. Please let me know if is needed more info!

### Reply 1:
Have you tried to reset the miner?Try this method hold the IP reporter/reset button for 15-20 seconds then after that access the IP again and set the pool properly make sure no extra character or space. Then test it again. More guides and troubleshooting guide from here <link>

### Reply 2:
Also try swapping board positions. Be careful when handling MicroBT devices, as they can be quite delicate. I don't know if the M3x also uses the (data) ""connection bridge"" as the M10...

### Reply 3:
I have done it multiple times but same issue.Link does not help. I have clean up all hashboards and PSU also and same thing.This issue happened 3-4 weeks ago but after cleansing, the board started working.I swapped, before was SM1 with problem and now is SM2 so it's hashboard fault not control board or something. But it doesn't result as ""Dead"" in Status and board is hot.

### Reply 4:
Good, also try using it alone, without the other boards, and see if it makes any difference. You can try swapping positions maybe it works best in one of them.Or, the fact that you are manipulating the data and power connection points is making the difference (ie, making better contact). Again, be extra careful.

### Reply 5:
I swapped to SM0/1/2 it was 0 ghsav. I tried it alone still same issue. Removed it and added other boards, other boards started working normally.I have another M3X, can I try with that one or its dead?

### Reply 6:
Put it on eBay or marketplace on this site.Sell it as a dead hashboard for repair.Stop spending time on it and move on.It simply is not that valuable to try to fix it.You would need to take a good board and the bad board.And use meters to test each board at many points. If you got lucky you may find the bad solder joint.If it is a bad solder joint.You may find a bad capacitorIf it is a bad capacitorYou may find a bad resistorIf it is a bad resistor.You may be able to solder and fix any of the above.You may be able to replace a cap or a resistor.But if it is a bad asic chip with a dead short it is next to impossible to repair it.

### Reply 7:
Thank you for the helpMiner restarted automatically and all hashboards started working. It's a connect loose but I don't know how to deal with it!

### Reply 8:
Sounds like the infamous data bridge issue philipma1957 recently experienced and had so much fun diagnosing. Assuming the M3s and the M10s share that.

### Reply 9:
Hello,What is data bridge in hashboard?Is this one <link> ?

### Reply 10:
Not exactly, in the M10 that cable is replaced by a small PCB that serves the same function.That said, try swapping one end of 2 cables to different boards or on the controller end, different sockets. Does the problem follow the swap?

### Reply 11:
Already swapped hashboards and had same issue. Its a connect loose for sure, M3X's are unstable and restarts randomly for some reasons when it restarts there is a low chance that hashboard will work. Have been 2 days without working and today it restarted and started working, giving same ths like other boards.Connect cable is stuck and cannot be removed.

### Reply 12:
Yeah they have three separate cables.It could be a bad cable.But if it can not be removed you cant put a new one in its place.

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22604,"Date: 2018-05
Topic: Need Opinion - PCB Protective Lacquer/varnish hash board
### Original post:
At the moment I have some T9 in my little farm, I make the maintenance one time per month. clean the dust and inspect the state of the hasboards.I think is possible apply some Lacquer/varnish to protect more the hasboards, someone have information about this or any brand to use, characteristics or any product? is good idea this?

### Reply 1:
I don't believe it is necessary.

### Reply 2:
IF you want to use one it is called a conformal coating such as <link> and available in single can quan from Mouser, DigiKey, Newark, etc.Used only to seal the boards against corrosion & fungus. DO NOT APPLY ON HEATSINKS!

### Reply 3:
If you are going to apply it, follow bitmains example for what they have, just cover components and not go crazy dunking the whole board in it.

### Reply 4:
Thanks for the replies dudes, for the moment select this product:<link> course not apply to heatsink only the pcb, at the future post here the pics.

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    ""hardware_name"": ""HEATSINKS"",
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    ""hardware_name"": ""pcb"",
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23283,"Date: 2020-06
Topic: Strange Error In Miner
### Original post:
And did you stop the GUI from starting Cgminer? I mean if not, doesn't this mean your miner has 2 instances of Cgminer running at the same time causing the new line to show up?The reason I suspect this is because of this lineFIFO stands for first-in, first-out, it's merely a pipe for queuing data, this error indicates that the pipe is full aka being used by another instance/s, which could be another CGminer.It could also mean that for whatever reason, there is something else exhausting this particular resource, but I lean towards my first assumption, so unless you can confirm that the miner won't start CGminer twice, the way you doing this is wrong.I suggest you refrain from starting Cgminer manually, and focus on fixing the initial issue instead of creating another one, I would do this:1- Sdcard the control board and flash the latest firmware2- Try a different pool3- Try a different network cable and use DHCP settings just in case.

### Reply 1:
Thanks for the infoWhat I did was SSH into the machine then (ps) to see what was running I killed the running version of CGminer before starting it manually from the terminal.I should have said I tested the miners onCKPool ( 48% rejection )CKSolo (47% rejection )Kano (45 % rejection )BTC.com (48% rejection )and so on and so on.. Bitmain told me to test on there Antpool which I did and guess what less than 2% rejected shares.It's like these miners have something in them that cause other pools to reject the work but the bitmain pool no problems I just refuse to mine at there pool.I have flashed them a number of times now with no luck and the same outcome each time.At a loss what to do with them as I have a lot of them sitting in boxes because of this most of them with less than 48hr's use.I have a feeling it's something buggy in the firmware the fact that every other pool is rejecting the shares but antpool accepts them I can't work this out.Thanks in advance.

### Reply 2:
If it works well with antpool then it can't be a network issue or anything else, it's most certainly in the firmware itself, maybe get the stock firmware from someone who has it or any different version from the one that is causing the issue, I am not aware of any trusted custom firmware that works on this particular miner but my guess is that if you look around you might find something.One last thing to try would be the Asicboost statrum on Nicehash, the miner might interact differently with that, give it a go.

### Reply 3:
Can you try to change the miner DNS? It might be internet issue just mikeywith said? You can change the DNS if you set the miner into static and add these Google DNS 8.8.8.8 and 8.8.4.4 or Cloudflare DNS 1.1.1.1 and .1.0.0.1Then test it again.If not, try to flash it again through the SD card; you can follow the guide from the link below.- <link> latest SD card image is this.- <link> then the old one is this - <link> don't know if there is a difference, but the old one is the old link that I bookmarked before, but right now, when checking the URL from the Bitmain download page, it changes to different URL that starts from file12.Try them both if there are improvements in mining in a different pool.

### Reply 4:
Hum ... i remember i have same problem on time i hack firmware S9 / T9+ ... mayby i have one idea why is the problem !i need more information ... you have SSH acces ? if not, try to unlock this with Anwesome miner (is easy) ...on time is ok, please paste me your ""cgminer.conf"" or 'bmminer.conf"" , please send all in here, (if you want mask your pool/username) ... i need to have this for understand Ps : if you have ""backup"" on your webgui , please make this and paste this file on my pm (if you want don't share all information for all)

### Reply 5:
Sorry for the late reply I have been trying out on other pools again after flashing with the firmware from the bitman website for the 4th time.It now looks even worse with the rejected shares.I really don't know what to do now with this bitmain again asked me to test on antpool and the miner is 100% fine there less than 2% rejected yet ever other pool seems to be high 45 / 50 % rejected rate.How is it possible that every other pool is rejecting the work yet antpool is accepting the work this tells me there is something in the firmware that is causing this bitmain claim it's the pools yet I claim it's there firmware.The V9's have a different controller board that all the other miners out there I have a feeling there is something in the controller board that is causing this issue but I can't seem to work out what this is.I am running out of options on what to do over this issue I feel bitmain sold me miners that are not fit for purpose and there excuse is and resolution is just mine on antpool which is unacceptable.If someone out there is a firmware guru I would love your views on the firmware bitmain have cost me a lot of money since I bought them and there lack of <rest of thread truncated>
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16059,"Date: 2021-04
Topic: Mining with a Well Connected Linux Server
### Original post:
We have excess capacity on a Intel Gold 16 core(32 thread)/32GB Linux Server running Red Hat Enterprise Linux 8. We can allocate 8 Cores(16 Threads) to mining. We are currently using One Amp of power at 220V and can use an additional One Amp without additional cost. We are connected to a Colocation 1 Gbps port in an area that is well connected to the Internet -- Santa Clara, CA. We only have 1U of rack space so we would like to try a software only approach or perhaps physically small usb attached hardware.Our goal in mining is to offset the cost of our server hardware and colocation fees. I have read the pinned thread above but it does not seem to apply to servers. I know this is a difficult question. If we can generate some effectiveness data from mining in this environment without a huge effort, I would like to give it a try. The ideal scenario would be to load a software package, hit start and monitor the resulting data. A push in the direction would be helpful.

### Reply 1:
It would cost more in electricity than you would ever make

### Reply 2:
As I just posted in a similar thread:Read <link> mainly point-3BTC can only be mined on ASIC-based hardware. And YES it does apply to servers!A variety of other coins can be mined on a PC/server but discussion of those belongs in the altcoin areas of the Forum. Services such as NiceHash can *pay* you in BTC but that is wholly different from mining it and again discussion about that belongs elsewhere.

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22762,"Date: 2018-10
Topic: Identifying miner model
### Original post:
Hi,Say I have several different miner and different Bitmain models, trying to automate inventory and set up. I am scanning the ip's after they are connected in batches and logging in through SSH using a script. Is there any way I can use linux commands to figure out what model the miner is? (S9,S9i,T9 etc). The miners use Angstrom linux distributions that lack many hardware checking commands. I check the kernel log but still cant differentiate between a T9 and S9. The best I can think of is to check the default frequency and pools, keep database of which corresponds to which and figure it out accordingly. I know many models use the same controllers, so I have to check either some firmware version or info on the actual card hardware.TLDR: is there a way to uniquely identify the model of a miner through some hardware/firmware check in the linux command line?

### Reply 1:
Unlike Avalons, BM miners have no tags like that. All you can do is give them descriptive pool/worker names from day-1. eg Fuzzy.Ant78S9B23 is my 78th Ant and is a S9 from batch-23.

### Reply 2:
What? The kernel log does include a line with miner type. (CTRL + F for ""Miner Type""). But the easiest way if you are SSH-ed in already is to do:Code:echo -n 'stats' | nc localhost 4028If you don't want to SSH in, you can run the above command from another shell on the same network, and just replace localhost with the miner's IP address.

### Reply 3:
You can send a TCP command to check what firmware is being run while the miner is running. The miner type is returned when you request status or stats ( I don't remember which) from bmminer along with the other stats from the miner (hashrate, chip counts, temps etc.).

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23614,"Date: 2021-07
Topic: Where can I buy decent miners online?
### Original post:
Not sure if I'm allowed to ask, but I'm looking to buy some more miners.I've had a major issue with buying some S17's from Alibaba. They were advertised with good working tests but when I received them they work for 30 minutes then the chips start failing and hashrate drops to nearly nothing. Alibaba wouldn't accept my return and sided with the seller, so I'm $7500 out of pocket.Is it possible to order new miners online? I've seen a few sites online in China selling Canaan Avalon miners and showing stock, but not sure if it's a scam?Tia, Paul

### Reply 1:
Move this thread to Mining board of the forum OP, on the lower left of this thread you will see Move Topic, click it and then choose the right boards there, your questions will be quickly answered in that board.

### Reply 2:
It would greatly help if you told where you are located as that makes one helluva difference...If you are in USA the I'd recommend using Blokforge.com who does have stock of Canaan miners. They also happen to be an Authorized distributor for Canaan.

### Reply 3:
Reddit + Bitcointalk will answer to you, you just have to search and to take time to read reviews and feedbacksWe are all in the same basket

### Reply 4:
If you can casually throw $7.5k just like that, it means you are quite rich already.I would suggest you to buy coins instead of miners unless you found a way to get free electricity. If you are going to pay for the electricity, just buy coins instead and save yourself from a headache.

### Reply 5:
I personally don't trust most traders in Alibaba. If their Trade assurance didn't even help you when discovered that the equipment was faulty and sided with the seller then it's time to completely avoid themWhat site are talking about you saw selling Canaan Avalon Miners? Be very careful, there are so many scam site pretending to be official stores of canaan.io like this one <truncated> <<<< SCAMYou can make purchases through their official site - <link> for inquiries - <truncated> - <link>

### Reply 6:
[quote author=crazypaul007 link=topic=5345tto buy some more miners.I've had a major issue with buying some S17's from Alibaba. They were advertised with good working tests but when I received them they work for 30 minutes then the chips start failing and hashrate drops to nearly nothing. Alibaba wouldn't accept my return and sided with the seller, so I'm $7500 out of pocket.Is it possible to order new miners online? I've seen a few sites online in China selling Canaan Avalon miners and showing stock, but not sure if it's a scam?Tia, Paul[/quote]If you are buying used miners, many of them don't transport well after a certain age.I have been able to successfully buy both new and used miners from vendors on Alibaba. I posted several in another thread or go to <link> and look under mining operations. The company names are there too.You can also try to buy directly from the manufacturer, I got T2T-26Th from Innosilicon and they showed up fine. New ones travel better.Bitmain has some non-BTC miners on Pre-order. Innosilicon may have that 26Th still open. If BTC miners, the S19J 100Th's just came in for June and there may be some available. Price varies when you in the secondary market es<rest of post truncated>

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11103,"Date: 2022-02
Topic: S 19 Pro firmware from 110TH/s to 220TH/s OverClocking !!
### Original post:
Hello miners,I just found this website and they clam they have a FirmWare for the S19 and the S19 pro , Overclocking to a hashing power of exactly double the manufacturer ?!has anyone downloaded their firmware and installed it on S19 Pro ?it's just so risky, last time i updated my S19 pro firmware, i couldnt access the HTML page for almost a week ,, it just kept on jaming on my ,, and then it came back on !!here's a link to the firmware page : <link> waiting for your inputs

### Reply 1:
TL;DR That is scary!That looks too good to be true.The reward would be huge; but if it bricks the device, the loss will be huge.I would only try if I were absolutely comfortable bricking the device. Even if the software were audited and proven to work perfectly in theory, the hardware is the ""in practice"" side of the equation. For example, in theory a switch or push button is a simple ""true or false"" read; in practice, it needs a debouncer and possibly calibration.A malicious firmware could make the chips run at full power and turn the fans off, thus burning all hashing boards.At that point, whether it can brick the control board too is relatively irrelevant if all hashboard melted.A non malicious firmware could do the same because of some bug or by being installed on the wrong target device.Bitcoin ASICs are probably the most optimized chips ever created. I can't think of any chip with as much incentive for optimization. Yet, some obscure ""asic to the moon"" website claims to DOUBLE the output of such chips. That also imply that it doubles the performance because the power supply cannot give double the amount of power, nor do its power cables. And the electrical circuit it is conne<rest of post truncated>

### Reply 2:
ASIC.to has been reliable site in the past for decent alternative firmware for S9 and S17 series. I have used on both of those without any issues in the past.I currently use MSK miner (mskminer.com) on my S17 Pros. They are both comparable and I just like MSK a little better.They both have Developer fee's built in of about 2.8%. The ASIC.to review on YouTube stated the S19j was 2%, but I can find any more details yet.I am also considering trying the S19J firmware from ASIC.toIt appears their are no links on their site for the S19j firmware at the moment, but very active chat on the Telegram Channel.I'm reviewing the chat now and may try it or may not.I suspect the highest hashrates claimed may require liquid cooling and maybe some sort of upgraded power supply.My only worry is my units are under Bitmain Warranty, and Bitmain will deny warranty if they detect modified firmware having been installed.

### Reply 3:
... violated the cgminer license at every step of the way.Even with the S9 where the software was available they would not release their changes.They state clearly that their latest firmware they must patch it.Fine, but the license still requires them to release those patches.

### Reply 4:
Did you solve this problem? Or are you currently having this issue?Sometimes this happens due to firmware corruption if you experience this again I suggest you revert it back to stock firmware and use the SD card flashing that you can find on Bitmain support here

### Reply 5:
Have to admit the concept and the way they present the ability of auto overclocking is pretty cool.

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24046,"Date: 2022-11
Topic: Avalon 821 Troubleshooting
### Original post:
HelloCan anyone help with what is going on here. Low hash rate and occasional shutdowns (this API Log is after the restart).Low hashrate <truncated> Version] => Avalon Firmware for avalon8 - 20191114 luci: 6a99d1e cgminer: 48afac1 cgminer-packages: 11997c6Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[132] MW[39842 39931 40034 40122] LW[159929] MH[0 0 0 0] HW[0] Temp[26] TMax[62] Fan[5040] FanR[65%] Vi[1207 1207 1210 1210] Vo[3865 3888 3880 3896] PLL0[3022 0 2 1448] PLL1[3298 0 4 1170] PLL2[3755 1 0 716] PLL3[4382 0 0 90] GHSmm[2396.80] WU[33199.33] Freq[133.99] PG[15] Led[0] PM[0] ME[1 1 1 1] MW0[0 0 2 1 0 0 0 1 1 0 0 0 1 0 0 0 1 1 0 0 0 1 0 0 0 0] MW1[0 0 1 0 1 1 1 1 1 0 1 0 0 0 0 0 0 1 0 0 3 0 1 0 0 1] MW2[1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 0] MW3[0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0] TA[104] ECHU[0 0 0 0] ECMM[0] FAC0[7] OC[0] SF0[0 0 0 700] SF1[0 0 0 700] SF2[0 0 0 700] SF3[0 0 0 700] PMUV[0000 0000] PVT_T0[44 43 44 46 45 47 46 46 45 48 47 49 49 48 47 49 46 47 48 46 45 45 45 44 44 44] PVT_T1[41 42 42 42 43 43 43 44 44 44 45 47 62 47 46 44 45 45 44 44 43 43 42 42 40 40] PVT_T2[35 37 35 36 37 37 39 39 38 37 40 38 38 38<rest of post truncated>

### Reply 1:
For a start, Ref HaggsFin's guide on itAnd Kudos for knowing how to properly post logs Ya got yer 1st Merit for that

### Reply 2:
The 2nd logs show there is issue related to power under pvt_v0 to v2 it might be the power supply not giving enough power.What pool do you mine? If it's in Nicehash most of the Canaan u its do not support Nicehash so better switch to another pool like Viabtc.I think the guide link above is not the right troubleshooting guide but the one below should be the right guide.- Troubleshooting and repair guide for AvalonMiner models 721, 741, 761, 821 & 841

### Reply 3:
f2pool

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    ""hardware_name"": ""Canaan units"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""AvalonMiner models 721, 741, 761, 821 & 841"",
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]"
16285,"Date: 2022-06
Topic: Mining ""without internet""
### Original post:
Bitcoin mining and transacting in general without the use of internet is an interesting subjectwas reading somewhere that can do so using radio waves, would be interested on more info on this subject!

### Reply 1:
Somehow I can see how this could be an option in Kazakstan because the internet is being shut down in the country and Bitcoin mining was stopped because there is no internet which is what you are saying could be possible. But it's just not going to convince a miner to go into. They'd rather be waiting for the chaos to be over so they could restart the farm again.

### Reply 2:
if the internet shutdowns repeatedly occur then offline mining could be a viable option.

### Reply 3:
Bitcoin without internet: (for context)I am considering the synchronization of a node to be partially solved by the BlockStream satellite that broadcast blocks and transactions. It is centralized, but certainly better than nothing.It is possible to ""broadcast transactions"" via radio. It's been done with HAM radio, and perhaps on other radio bands too. It does requires someone to receive it and relay the transaction to the internet, but that is unavoidable. More importantly, radio waves are regulated making it a legal challenge.It would be easy to setup ""base stations"" that listen to [some frequencies] and relay any valid transaction that it receives to the internet. As far as I know, there is no such active relay, though I believe it would be totally legal in most countries and, even where illegal, it would be very difficult to track/down such relay unless they advertise their location.I have heard of the goTenna, which has some interesting tech for broadcasting transaction. I don't see how that can be helpful for mining, but looking into it can certainly give some insight.While far from perfectly reliable, but definitely a suitable backup, one could transmit transactions via SMS. <rest of post truncated>

### Reply 4:
Perhaps try reading up on how Bitcoin mining and other crypto mining in general works. Mining nodes MUST be able to communicate with each other in a timely fashion to be able to know if/when a node reports a block found, add the block to the chain and then have that confirmed before someone else is successful. What you are describing as 'offline mining' is no better than putting a note in a bottle, tossing it in the ocean and waiting for someone to pick it up, read it and then replying with another note in a bottle.At least with DBS links there is no blocking possible by a gov simply pulling the plug although latency will certainly be an issue resulting in any blocks you find will end up being stale and be orphaned.

### Reply 5:
I do understand that mining requires node to communicate. I am talking about communication without internet, not ""absence"" of a communication link. I used the word ""offline"" at the end referring specifically to internet being down, though I understand the confusion and edited that part. What a goTenna can indeed be compared to ""tossing [transactions] in the ocean"", but that isn't the topic.I doubt that governments can't shut that down DBS (Direct Broadcast Satellite). That would mean that they also can't force BlockStream to stop feeding data to the satellite. And being centralized, BlockStream itself can decide to stop broadcasting. But as I said, it is indeed a very good tool that can provide for the inbound part of the communication.I believe that the operator of a big mining farm would happily use communication channels with a few seconds latency over being completely disconnected and have their hardware sitting idle.A miner (especially a solo miner) does NOT NEED low latency. In fact, Bitcoin and Proof-of-Work are DESIGNED for high latency and low throughput. Lower latency if is financially preferable for miners and reduce the likelihood of stale blocks, but is in no way a req<rest of post truncated>

### Reply 6:
Yes, mining will continue if the internet goes off. But if you do not have internet then your miner will not be able to communicate to the network and submit the Proof of Work hence it will create a fork in the network.

### Reply 7:
You should take a look into point to point microwave wireless, such as those Ubiquity (2.4ghz/5ghz) antennas.A bit more DIY could be using Wifi with unidirectional antennas, but they need to be pointed to each other. They have done 382 km!Thing is those goTennas are way too slow (stay away from the locha scam). That sat link you mention is useless, unless its a proper sat link with bi directional data as some miners use (ie, in Africa, in the ""middle of nowhere"" but next to a hydro plant...). SMS? Nope

### Reply 8:
You need to have a reasonable connection, otherwise you'll end up with stale blocks

### Reply 9:
Line of sight is everything, good luck getting anything close to that range if you won't be cherry-picking your two points, the nature of earth is just ""not so flat<rest of thread truncated>
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    ""hardware_name"": ""goTenna"",
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    ""hardware_name"": ""Ubiquity (2.4ghz/5ghz) antennas"",
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22718,"Date: 2018-08
Topic: Rack for my Antminers S9
### Original post:
Those metal rack adapters are nice, would they support the miners if they were mounted horizontally?

### Reply 1:
As I've seen there is no issues with them as plate is strong and welds are done as they should. Original vent screws are long enough if you're not using intakes, if you are using intakes like I did, you need to get a bit longer ones (depends how much is intake thickness).

### Reply 2:
Hi, I'm just an mining wannabee, so I've bought some S9 some time ago. Had constant heating problems with them and space limitation, noise problems, unhappy wife, so not ideal conditions at all... Wish to share my <truncated> I've created wooden box for 3pcs bought last year. First box was made from our missing cat's house, which was not the best solution... Next I've made a bigger wooden box again and put some insulation/noise reduction foam inside, which actually did reduced noise levels for about 20db when closed.I did design and 3D make intakes and exhausts to mount on antminers. I do not recommend PLA at all (luckily I didn't used it, also not PLA ""fire"" as they will deform thru time. PETG seems to work overtime. Not sure how airflow thru intake (and exhaust) actually helps in performance (eg. air delivery) as I did no test, but are made close to turbine's in/outs, plus it's much easier to connects the air hoses/tubes.I had issues with overheating as incoming heat (had air delivery from outside) affected the miners, so I've let room air inside and temperatures imeediately dropped to about +-80 degs, measured +-85degs now in hottest summer days.Then I've made Y connector for 12<rest of post truncated>

### Reply 3:
Nice Rack!! We have a slightly larger operation, around 200 miners. Had a heat issue as soon as we turned on more than 30, we also burnt our power drop of the warehouse. Needless to say we finally got a new drop and phase 3 power, so we could plug all the miners in. We ended up creating a HOT BOX to take all the heat out and installed 2 fans at the end of the box to suck all the air out and offset our positive air pressure in the box and 2 fans in the room to offset the negative pressure in the room. Here's some before and after pics, this setup created temps of 100+ in the room; needless to say, our little funneling of the miner exhaust has dropped the temp in the room almost 20 degrees.<link>

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    ""hardware_name"": ""PLA"",
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    ""hardware_name"": ""PETG"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Y connector"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""HOT BOX"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""fans"",
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]"
23552,"Date: 2021-04
Topic: HELP with Avalon 921 with power connection burned
### Original post:
Hello, I'm new miner Wink so please be patient with me.I bought a used Avalon Miner 921 20th/s it started to mine good but after a couple of days, all the PCI power connections get burned. I realize the smell of burned plastic and immediately turned off. but now I have all the pic connector burned i don't know why this happened. Is there someone who can help me?Why this happened? should I change the connector and keep mining or do I have to do something else?Sorry about my English xDI can show you a picture if it's necessary.Also, my miner was working at 97 degrees I live in Venezuela the people who sold me the machine told me that temperature is ok.

### Reply 1:
That usually happens when the miner draws more power than the cables can handle.Yes, pictures are necessary to know if it's safe to use, specially the power supply that you were using.Since you're a newbie, you can only post the images as links, but use [img][/img] tag instead of [url][/url]I'll ask a Mod to move this to Bitcoin > Mining > Mining support to get support from the right people.

### Reply 2:
It seems that you running it at 120v that is why they get burnt. What is your outlet voltage power?This unit must be run at 220/240v if you run this miner at 120v I'm sure it will be burnt and damage the miner.Just search about the outlet voltage in Venezuela and this is what I found.

### Reply 3:
Is that 97F ambient air temperature where the miner is located or 97C as reported miner temperature? The 921's run hot and mine routinely reported 98-104C miner temperature with no problems. That is with room air temperature being up to 92F (33.3C). They ran that way for over 2 years before I upgraded to the A10 series and took the 921's off line.Regarding the PCIe connectors, what PSU does it have?The A921 requires one rated for at least 1,800W and when running hot it will pull up to 2,100W. If done properly, the higher the wattage a miner PSU is rated for the thicker the wires used for the cables, 16ga is preferred. That in turn better pulls away heat from the connectors. A PSU that is too small or cheaply made will use thinner wires and possibly instead of copper, aluminum wires which is even worse.

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11001,"Date: 2021-09
Topic: Cryptominerbros .com reviews?
### Original post:
Hey Guys,I'm planning to expand my mining business and I've been getting quotes from a good amount resellers.Since I'm about to spend about 100k USD I have to make sure that the vendor is trusted and delivers as stated on the website.Until now I've only used manufacturers directly and conminingcentral.Do any of you have any recent experiences with Cryptominerbros?Are they legit?Thanks in advance!

### Reply 1:
From what I've read here and there they are at least shady.It seems to have a lot of fake positive feedbacks / reviews everywhere, but they don't treat their customers well.I'd start with reading this topic: <link>

",[]
16283,"Date: 2022-06
Topic: Solo Mine to Bitcoin Core 22.0
### Original post:
Anyone have a good instructional guide to Solo Mine to Bitcoin Core 22.0? I know it's a crazy questions with the Bitcoin diff the way it is but for experimental reasons. This would be fun. I have a fully synced Bitcoin Core 22.0 full node on VPS ready to go to test this .

### Reply 1:
No, you won't be able to mine with PC or VPS you need an ASIC machine to be able to mine solo in Bitcoin core. Or if it's for study purposes I think you can solo mine on Testnet but not for the Mainnet. Also, check the USB stick miner Compac F which is usually used for study/experiments and solo lottery mining.

### Reply 2:
To solo-mine, you need two things in addition to the USB ASIC miner - a mining software such as bfgminer, and a (self-hosted) pool.ViaBTC's pool source code has been open-sourced, so you can put that on your VPS and point it to your BTC node. Generally, you won't have to worry about the intricate getblocktemplate and submitblock details - the pool should take care of that for you. Meanwhile, bfgminer will autoscan for ASICs for you by itself.

### Reply 3:
Tried getting ViaBTC's pool. About 4 hours wasted trying to configure it and ended up just not compiling properly. Any other advice for a very simple solo pool open source code that can be used? Something quick and easy with very little need to be modded ?

### Reply 4:
Take a look here: <link> are other pool installers out there too. I can't vouch for any of them but I know they exist and people use them.You might actually want to ask in the altcoin mining section. New shitcoins are popping up all the time and pools to go with them so I would *guess* there are people who can help you there too.Somebody was working on a NOMP or UNOMP version that worked with the newer versions of BTCDon't remember what happened with that project.-Dave

### Reply 5:
everything seems to be outdated. Tried Yiimp,Nomp . Nothing seems to work with ubuntu updates. It's like people stopped developing for Bitcoin pools. If they do develop they hide their code or close source it. Getting so frustrated. Wish i could just cgminer directly to my Bitcoin core and solo.

### Reply 6:
This script is known to work with Ubuntu 20.04: <link> Not sure what else you really need. There is a way to install p2pool and run it as solo but you would have to do some digging for how to do that. I know it was discussed on the p2pool thread here.-Dave

### Reply 7:
run CKPool (<link> on your node and you can point any stratum miner at it.

### Reply 8:
Actually, due to some changes in Bitcoin Core's GetBlockTemplate, CKPool doesn't work with versions 0.20.0 and above. It's a pretty simple change to CKPool, so I've done that and put it up here; <link>

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16074,"Date: 2021-06
Topic: How I Can start bitcoin mining
### Original post:
I want to start bitcoin mining. I want to know the equipment's which are required for minig.Is this profitable right now?

### Reply 1:
I'll take the liberty of judging from your name that you are from India.For mining Bitcoin, you need special machines called ASIC miners. They are manufactured by a few companies like Bitmain, Cannan, Innosilicon etc. Unfortunately, due to the ambiguous legality for cryptocurrencies in India, you will find it very difficult to get them through customs. Getting your hands on miners can also be possible through resellers on the forum or you can check someone like @kaboomracks on telegram.Another option is to mine Alt-coins using GPUs and then convert your earnings into Bitcoin.Mining doesn't need a lot of knowledge to get started. Most of it is available online. What you need is a large initial investment, access to cheap electricity and securing sufficient GPUs/ ASICs in the backdrop of a bureaucratic, non crypto friendly body like Indian customs.

### Reply 2:
We can't really answer you that question if we are unaware of your budget. Generally, yes, in order for people to maintain the network, mining is obviously profitable for them.You should read this: How does mining work in Bitcoin?

### Reply 3:
I guess we should answer him/her by giving the things she/he need or can do to start mining. For my own opinion it's unnecessary to to know her/his budget. But I agree with you that they gain profit in mining. I've seen in some of the comments in here that she/he might from India and based from my research India propose a law of banning cryptocurrencies and will fine anyone trading, mining or even just holding these digital assets, a senior government official told Reuters. So might be careful before starting. Do your research. Good luck for your mining journey.

### Reply 4:
It would be better if you can check them for yourself if mining is profitable.Use this link to check them For ASIC miner:- <link> GPU miner:- <link> decide if it's profitable just minus the Electricity rate in your country.All ASIC miner is Plug'n'Play just set up the pool where you want to mine and it doesn't need any special equipment just provide 220v+ power and internet you can run them and mine coins.And I would like to suggest you read this for starter small farm or big farm.- <link>

### Reply 5:
You wont find any equipment, the machines sold are far to expensive. You wont find any hardware either. If you,re not a millionair

### Reply 6:
Just buy a small asic to start and see if you like it or notYou'll be able to resell it because of difficulty to find them actually

### Reply 7:
the basic reply is do you have low cost electricity?? if yes even the 5 years old asics will make profit.generally start low read learn and go further onmy stolen account Lowbander80 was LegentaryMining since <truncated>

### Reply 8:
Bitcoin bot sistemi kullanabilrsin ok kazanl

### Reply 9:
Could you tell me more ?

### Reply 10:
Don't fool on this there is no Bitcoin bot system that can mine BTC they're most likely scam like Cloud mining sites. If you want to start mining read this first <link> ASIC daily profit, you can check it here <link>

### Reply 11:
Mining is profitable at all right now. But recently I read that it will soon become irrelevant cause of technical changes

### Reply 12:
Recently I read somewhere that mining has become less efficient, as people are illegally mining. There are many technical changes that are going to be implemented for mining. If this is true.

### Reply 13:
Been living under a rock for the past 7 years? Bitcoin mining gear has been becoming more and more efficient since at least 2013.The only illegal mining is either where a backwards country decides to make it illegal OR where people steal power to do it/ People doing mining in those conditions are idiots.

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11315,"Date: 2023-06
Topic: Announcing GekkoScience's new USB stick miner, the aptly-named NewPac
### Original post:
So, I've been working in secret the last few months on a new stickminer to replace the venerable old 2Pac.It's not as good as I would like - certainly less fancy, but we have to remember that the GekkoScience design philosophy is ""Simple, Durable, Reliable"".This new stick, the NewPac (so named because it's quite obviously just a newer version of the 2Pac, which was itself just a two-chip Compac) features a pair of Bitmain BM1387 chips and a stock clock setting of 100MHz for 23GH. The chips are pretty bad at thermal runaway which means 100-125MHz is a practical top-end for passive cooling, though with moderate airflow they'll run 200MHz (45GH) at under 5W on stock voltage.I have seen these sticks pushed to 90GH, which makes them roughly hashrate-equivalent to my Terminus R808 pod miner but from about one fifth the power draw. It's theoretically possible to overclock to 130GH but this will require a strong hub and possibly custom cooling. I have not tested past 90GH. Every stick is tested at 45GH before shipping.VH's new Gekko cgminer driver is able to detect and recover from the same kind of issues which would have caused a ""ZOMBIE"" condition on the 2Pac, meaning increased reliabili<rest of post truncated>

### Reply 1:
Looking good there!

### Reply 2:
Looking great and robust, as always.

### Reply 3:
Dope.

### Reply 4:
Started a new thread for NewPac technical discussion and support: <link> code base is the same, and compatible with all version of GekkoScience stick miners.Here are some readings off of my portapow monitor for efficiency*. *fan uses power but not included

### Reply 5:
Available for purchase via ASICPuppy.comNew orders shipping this week!

### Reply 6:
They look nice.Good luck selling them.I guess I need one or two just cause I have a compac and some two pacs.

### Reply 7:
Aww yeah more usb mining porn.

### Reply 8:
I ordered 2 of them. Should arrive soon.I will post a review when i get them.

### Reply 9:
I know it may too soon but have you (Sidehack) or VH had a chance to see if the ""overt asicboost"" can be utilized?Also CrazyGuy, I Can not get an account registered on Asicpuppy for some reason as you have the only NewPacs available on your website.

### Reply 10:
Would love to buy some But I can not get an account registered on Asicpuppy for some reason... Or add to cart.CrazyGuy, can you help? And do you ship to Skandinavia/Europe?

### Reply 11:
damn it.. ill have to get 8. or 10... looks like i know what my bonus is going for now

### Reply 12:
Hey guys, I've resolved the shopping cart issues a couple of you were having. Please contact me directly if you are still having issues. Newpacs still in stockASICPUPPY.COM

### Reply 13:
Tracking was given to me for my purchase of two

### Reply 14:
Just ordered from CrazyGuy! Awesome work and can't wait to get mine... something new to tinker with!

### Reply 15:
They are the Plugables. I still have my trusty 49ers from Eyeboot but I was having trouble running several sticks at high speeds (I test at 200MHz though stock is 100) so I built new test setups with smaller hubs and better USB busses than the ancient computers I was using. Now each machine is running 12 sticks; I tested 16 but had trouble, though it could have been a faulty hub.Two sticks per hub are running off one regulator, but they're also running only 5W each so power is not overwhelmed. You might have trouble depending on how much you overclock. If the hub's good for 60W that's 20W per regulator, so 10W per stick in pairs. If that holds, you should still see around 400MHz (90G) before it gives out assuming you have adequate cooling.On Thursday I finally received a sample order of hub chips that were purchased in September, so hopefully I can get back to my own hub project. For now though, those Plugables are working pretty well.

### Reply 16:
Just ordered one:)Thank you CrazyGuy

### Reply 17:
Hey Guys, sorry for the delay's. We had to get our <truncated> in order. ours are now posted.<link>

### Reply 18:
Was able to complete my registration and my first order.Thank you CrazyGuySidehack, what hubs are you using in the pictures above?They look like the 7-port Plugables (casing stripped) that NotFuzzyWarm recommended but you have 4 NewPacs in them. Which If i recall the Plugable was only able to power 3 2Pacs because of power distribution being joined at 1-2, 3-4, 5-7 ports.Just wanting to see what hubs I need or if I can reuse what I have onhand.

### Reply 19:
i ordered 1 stick via btc since 27/10/20818 and it still in Processing right now.

### Reply 20:
Is there a vendor that accepts paypal? Bitshopper used to accept paypal but doesnt look like hes stocking these at the moment.

### Reply 21:
Outstanding! Just ordered four from ASICPuppy. Will be pointing these at Johnny's Gambling Hall, and Kano. Hope they play well with my other 2pac and Terminus miners.

### <rest of thread truncated>
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    ""hardware_name"": ""Terminus R808"",
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22150,"Date: 2018-01
Topic: Antminer U3 Problem
### Original post:
Hey guys.I bought a few Antminer U3s long time ago and last week I wanted to check if they would work again. So everything worked fine except one. One doesn't mine and is always beeping. Does anybody have an idea what the problem could be? Maybe the fans? Hopefully someone can help me.

","[
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13835,"Date: 2023-06
Topic: Recommended chip temperature - Antminer 17 serie?
### Original post:
I run with Bariin's software and have the following settings for my antminer 17 series miners. In this case S17PRO, T17+ and S17+ miners. Temp mode: autoTarget 75cHot <truncated> find any information from Bitmain about recommended chip temperatures for 17 serie only for PCB.What do you guys have for temp settings and what is working for you?Thanks in advance!

### Reply 1:
I tried to search on Google but you can only find PCB temp for this unit.Also tried to search for the BM1397 datasheet but no one share it yet.I think the Asic chip max temp for the 17 series is usually around 110c-135c.My suggestion is better run it in auto mode instead of running it in manual mode because if you set it near the max temp you just likely frying your chips to death.And it is always better to keep them cool.

### Reply 2:
Do 72c80c85cit is safer

### Reply 3:
I also tried to find information about these chips BM1397 and their max temperature, but it was impossible. Thanks for the advice!I send Bitmain an email but still no answer.

### Reply 4:
That is really cold. Will be hard during summer season. Any advice to keep them running cold except maintenance ofcource?

### Reply 5:
If you have the stock heatsinks, i would keep them below 85C. You will risk the heatsinks and or chips falling off.

### Reply 6:
Thanks for that advice!

### Reply 7:
Keep it in the 70s unless you want it to break and have a short life

### Reply 8:
Or maybe just abuse them till they die , personally, I did not have much difference between running those low-quality gears cold vs hot, they all died way too soon. Mind sharing where you got those numbers from? I am almost certain that no Antminer 17 series miner could run for over an hour at anything near 110-120c, let alone 135c.

### Reply 9:
Honestly, I don't have a source it only came to my mind because maybe they are similar to S9 Chips that have 135 max temps.However, I recently realized after checking the Skot project called Bitaxe that the max temp shouldn't be more than 90c my reference is the temp he share on his Twitter, The PCB temp and the Braiins auto mode dangerous temp.I couldn't find any data so this is just my own guess collected from other user's posts.

### Reply 10:
The S9 chips are at least two generations behind, and are different.This happens a lot with CPUs and GPUs, some can take a temperature, next model has a much lower limit. So what you did with S9 does not apply with S17 or S19.The S17 tends to desolder itself so i bet it would get damaged from that, way before the chip real limit.If you want to believe the manufacturer, PCB is roughly 15 less than CHIP and you can use that as reference, so 75+15=90 max.I wouldn't trust it, let the miner slow down itself with dynamic power scaling using either default temperature values or lower.

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22263,"Date: 2018-01
Topic: s9 hardware/firmware question
### Original post:
not sure if in right section, but here goes:-I have some mish mash of units I want to try and combine, (I have alot of 1 and 2 board units) and I want more info on what is compatible, for example, I have a s9 hashboard form an old miner that still works, its was run on the older firmware that you could change frequency and fan speed, can I put this board into a newer firmware (auto-tune) rig and run it along side ok? and is the reverse of this possible? can I put a newer board into a older firmware s9 rig and change its frequency?I do understand there have been reports of non compatibility of upgrading firmware on an older unit, also interested in ""downgrading"" firmware to non auto tune rigs, anyone know what is possible between all of these versions?

### Reply 1:
You can but sometimes the results are very confusing. I would warn against mixing board revisions if at all possible

### Reply 2:
still looking for anything definitive, any board versions that are known not to mix with certain firmware versions?

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22693,"Date: 2018-07
Topic: Prevent dust from collecting on S9 intake fan grate?
### Original post:
What's the best way to filter out tiny dust? The filters in now don't seem to catch fine dust/sand particles and they just build up on the intake fan grate (see pic):<link>

### Reply 1:
Automotive intake air filters

### Reply 2:
Wow that picture... I must say you are determined as I have commented on a few of your topics and seen most of your problems.I would say your best bet would just be some filter cloth on the fan intake. Something like this, I can't find the product we use in my plant for electrical panel fan intakes.<link> don't know how much it will affect the airflow on the S9's though so it may be an issue as your last post was talking about overheating, but the filter might counteract that by preventing dust build up in the machines.The other option is obviously cleaning the warehouse and sealing it up so that only your intake air is entering and filtering that. You can build a holder for multiple common furnace filters.This same method can be applied on a larger scale by building a hotside/coldside at the machines and building it out a few feet on the intake side and making a filter house. Each of the walls on the intake side would be made of walls of filters.Good luck

### Reply 3:
Depends on your setup design. I just built a box 4' high, 4' deep, 5' wide. The box is attached to an exterior wall. I put in 2 - 3200cfm fans on the exterior wall. This box has a middle wall with cutouts matching the shape of the miners. On the side of this middle wall, opposite to the exterior wall with the fans, I mounted shelves to sit the miners on so their fans protrude through the cutouts. There are 3 shelves. Bottom shelf has miners. The middle shelf has miners on the shelf and I mounted PSUs under the middle shelf to feed the miners on the bottom shelf. The top shelf has the switches sitting on top with PSUs mounted under the shelf to feed to miners on the middle shelf. I also drilled out 1.25"" holes above the miner cutouts - behind the PSUs to help pull their heat out as well. Then the wall of the box that is furthest from the exterior wall with the fans has 4 - 1""x16""x20"" air conditioning filters installed over openings 1"" smaller than the filter all the way around. Everything is sealed. All areas where I used plywood have silicon caulk between the 2x4 framing and the plywood. The ""door"" with the filters has rubber weather stripping between the door and the framing behin<rest of post truncated>

### Reply 4:
Holy crap! I think you need to do more than just filter the miner. You need to filter ALL the air coming in!

### Reply 5:
I used to use convoluted aquarium filter foam. Cut a 120mm square piece and the suction of the fan kept it in place. Worked quite well considering it wasnt a very fine foam.

### Reply 6:
Well all of the walls are louvered and now they have filters on them as well to prevent the majority of pollutants from entering. Kind of like in this picture: <link> there is ongoing construction which is introducing ways for unfiltered air to get in. The miners are set up in a hot/cold scheme but there is not enough space to try to filter the air in more places then just the louvers.

### Reply 7:
Just blow em out every once in a while, the dust isnt that big of a deal. Not worth the expenditure and time to do all this super filtration IMO

### Reply 8:
Thats why i just went for cheap aquarium filter foam. The sheet I bought was 3 and could do 6x 120mm fans.

### Reply 9:
I use activated carbon filtersthey do the job greatAlso consider that I have all my farms in city, it's a hell of a dusty place and this filters do the jobthey come in different sickness varieties depending on your needsand the best part is that they are washablethis gives you the chance to use them for 6-8 month before getting new ones

### Reply 10:
My box method using 3/8"" plywood and 2x4's cost probably $150 for a 16 miner space. Add my 6400cfm of fans to keep air pulled through at a good click and they are also staying nice and cool with redundancy for about 290watts of fan power. Once I clean the miners out (from where they got dirty before being put in the box) I don't think I will have to do that again for a long time. The fans were $220 for the pair with another $60 or so for the louvers to keep rain, bugs, etc... out. But my wiring and fans were needed simply to run my miners in my space - so I only consider the cost of the box and filters. The filters were the cheapest I could get per square inch of filter - for air conditioning filters anyway.Building it this way also pulls the air across the miners very efficiently and I'm sure is allowing the bigger vent fans to lower the power needed to run the miner fans. Right now with 10 miners - they should be moving 10 x 250cfm = 2500cfm. The 6400cfm fans are being reduced as they are pulling throught the filters and miners - but even if they are only being half effective, that's s<rest of thread truncated>
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    ""hardware_name"": ""aquarium filter foam"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""activated carbon filters"",
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23929,"Date: 2022-04
Topic: AValon 1246 83T unstable
### Original post:
HelloSince few days, I have difficulties with my Avalon1246 83T : Hashrate drops, and it reboots often. Problems occur in normal or turbo modePreviously, It worked without problem.Here are log and picture.I could catch a log with SYSTEMSTATU[Work: Out Over Hot, Hash Board: 3 ] error ; but I always see 26 / 66 in the dashboard, not high<link> not an internet provider problem, because just next to it in the same room an other 1246 85T runs perfectly.Note that fans run at 6500 RPM (whereas on other 1246 85T runs at 3500. Maybe it's ok)Here a view of minerstat where ou can see it works during hours (days) and then it has problemsAny idea of the problem ?

### Reply 1:
According to your logs, one of the ASIC chips reach 110c which I guess is the maximum chip temp before the temp protection was activated.Here are the logs that I'm talking about check the PVT_T0 begin counting on the last 27 to the left Code:PVT_T0[ 66 69 77 74 68 69 67 69 72 72 70 66 67 72 76 75 69 69 70 72 75 76 70 68 67 70 73 73 70 67 67 71 74 73 71 67 67 69 73 75 74 70 66 69 74 70 67 67 64 67 68 70 69 65 62 68 68 62 64 64 59 61 58 61 62 62 64 61 60 63 60 63 64 67 66 64 65 64 66 64 61 63 65 82 66 65 61 64 66 64 65 63 64 110 65 67 65 65 64 62 68 66 66 64 61 61 83 66 64 63 63 61 67 62 65 66 59 57 63 64]PVT_T1[ 61 64 69 67 67 64 62 67 67 73 68 65 65 68 72 76 69 68 67 67 76 72 70 69 65 69 77 72 68 65 65 69 71 70 85 68 65 70 74 73 70 67 65 67 69 71 65 66 63 65 66 69 68 65 60 66 68 63 64 62 59 56 57 59 61 63 62 61 59 59 63 63 64 63 61 61 65 65 61 63 62 62 65 66 64 66 64 63 65 65 64 62 62 62 64 62 67 63 62 65 67 65 62 64 65 62 62 65 64 61 59 62 64 64 64 64 60 60 64 64] PVT_T2[ 66 69 70 69 69 70 69 73 73 72 70 64 66 81 72 71 73 119 67 74 73 73 69 69 67 73 74 74 94 67 68 73 72 76 74 67 69 73 74 75 72 69 69 69 73 71 73 68 64 68 70 69 67 67 65 66 68 63 65 64 59 61 59 64 63 59 61 64 64 62 6<rest of post truncated>

### Reply 2:
Thanks for your help. Where do you see ""weird under V0"" ? As the avalon is still under waranty, with log problem I coul'd ask for a new one

### Reply 3:
I see high voltage where there is high temp chips. Is it that ?

### Reply 4:
Check your whole logs again you can find it there not on the part that I posted above. Look for this ""Vo[0]"" without quotes it shouldn't be 0 as I said above it's just my theory that it could be a PSU. You can also try to flash it first with the latest version since it is still under warranty we couldn't do anything inside your miner it can only void your warranty.Since your miner is still under warranty why not contact the support and send it back there for replacement or repair?

### Reply 5:
It's what I have done. They said open it to see if everything is OK

### Reply 6:
I get the new firmware <truncated> from canaan.Same temp problem, and with it, it can't go up to 73 TH in turbo modehere are the temp from log

### Reply 7:
1st, it's nice that Canaan is still using temp sensors in each chip Seeing that table tells me that either those specific chips have faulty sensors or the chips/cores themselves have issues. Either way, assuming the miner is happy running in normal mode that's how I'd run it and not bother with repair because of the time involved.Query: In normal mode I take it those chips are still reading higher temps than the others but are not in the danger zone?That said, I'd 1st see what Canaan has to say about it. With the Avalons at least the end user can actually replace bad hash boards themselves if they are comfortable doing it.

### Reply 8:
After a power on off, it loops and can't mine. It doen't accept temp > 110 on a chip. Same problem if y put it outsite where it's 13 CWill try canaan support by email.I captured the log just before the crash and after a crashbefore crash after 202s, where we have theses max value for temp : MTmax[108 74 111] MTavg[62 59 63]<link> crash 206s, where we see ""out over hot"", and wrong PS value : PS[0 1214 2 0 0 1272] <link> someone have the previous firmware (Version <truncated> i'm interested

### Reply 9:
Quick news. After contacting canaan by email, they gave me a firmware. And with a command to auto-tune the frequency and voltage , it works fine at initial hashrate, with still few high temperature, but ignored.For them, ""The temperature is faulty caused by the IC temperature sensor"" ,but I ""could ignore the issue ,because the actual temperature is almost same with nearby IC temp. ""

### Reply 10:
Glad to hear it's working now Merit given for getting back to us and letting us know your progress

### Reply 11:
can you please share contact adress of canaan , i have similar problem with my 1246....

### Reply 12:
You can try to contact them through their email you can find it here <link> you can contact them through their social media accounts check this links below- <link> <link> <link>

### Reply 13:
Hello! I have the same problem. Can you shared here the answer from canaan with the link<rest of thread truncated>
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23948,"Date: 2022-05
Topic: T17 autotuning for 2 days. is that normal?
### Original post:
I flashed ASIC.to on my T17 and it's giving 33-36T but it keep restarting for 2 days straight. here is the log;<link> let me know

### Reply 1:
I'm not so familiar with ASIC.to firmware but I would like to ask if you are running t17 at immersion cooling? I just notice that it didn't detect fan speed under your screenshot it might be the cause of the problem why it keeps <truncated> to Asic.to this one below it will automatically restart in case of any failure.Code:7) Added a trigger for the maximum number of miner restarts in case of a board failure.So there might be other issue under your hashboard that cause miner auto restart.

### Reply 2:
Hello. Yes, I removed the fans and enabled immersion mode. I decided to turn off profile preset and manually set freq and voltage. It has been running smoothly for 12 hours now. hashing at 38T drawing 1.9kw.

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16324,"Date: 2022-08
Topic: Is Asic miner more friendly right now
### Original post:
Do you think that Asic miner is a better buy at this present time? Since Ethereum is going to PoS soon and no other PoW coins is delivering the exact returns of that Ethereum I think it will be smarter to nose out for better returns this is why I am asking this question, if Asic is better then I will dish GPU for Asic

### Reply 1:
I sincerely believe so. I recently bought 4 used asics and am no longer buying GPUs.

### Reply 2:
Both GPU and ASIC miners support Bitcoin's proof-of-work SHA256 algorithm, but ASICs are more efficient.

### Reply 3:
Mining with graphics cards was a long time more profitable since many people are mining Bitcoin only and Graphics card are way harder to get. You have to consider that buying ASIC for the average user may seem hard, but for big mining companies it is way more easy than to buy graphic cards. Since Graphic Cards are now easy to get you don't get that premium anymore.

### Reply 4:
besides the fact that you can't mine BTC with GPUs, it's terribly inefficient.

### Reply 5:
Take note ASIC units are power hungry compared to mining with GPU if you are planning to mine with ASIC you need to be prepared so I suggest you read this ""First time/Small miner reference for getting started.""Mining with GPU is no longer profitable and it can no longer mine BTC maybe years ago it can still mine BTC SHA256 algo but right now GPU is no longer supported. Unless you talking about mining on Nicehash and paying you in BTC you are not mining directly with BTC you are paid due to hashrate rentals on Nicehash.

### Reply 6:
I vote for Asic

### Reply 7:
Off course ASIC miner more friendly and more profitable right now,also electricity cost more high from gpu.but i am not saying gpu mining bad, overall Asic miner best in my opinion.

### Reply 8:
Asic wins this battle, any time any day, profit is higher and the hassle of managing the miner is lesser compare to a mining rig with 6-8 graphic cards, Aisc is plug and play, they work nonstop but I have to check my gpu rig from time to time, some times 6 gpu rig will reboot itself and only 5 gpu will keep working.

### Reply 9:
yes you can but as a two step process.ie gpu to eth to btc

### Reply 10:
Yes, not just because they are better and it looks like everyone's choice here, but also because since it is majorly what most miners are going for, it will be wise not to buy another not common to miners at the moment so you easily get technical support if you need and for easy repair of hardware component should any become faulty. It will be easier since it is what other miners are currently going for.

### Reply 11:
For me asic doesn't win a shit, Asic miners are winners in their own world of BTC mining and GPUs are also winners in their own world of altcoins mining, see I can't handle two Asic miners that's 3000watts per hour, I can just build GPU rig that takes less than 3000watts per hour, in fact I can build a rig that will only take 350watts from the wall, I cant do this with Asic miner.

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11075,"Date: 2021-12
Topic: minersspace.com legit?
### Original post:
This seems too good to be true, although prices vary so much I wonder:<link> seem to recall S19Pros selling for under $3k back with Bitcoin was struggling around $10K, $15K at $60K BTC.Rather warry since I found the site embedded in a e-bay ad... (which I'm pretty sure is against e-bay terms and conditions - and if they will violate those, how trustworthy are they?)

### Reply 1:
Hmmm:<link> terms and conditions are copied from:<link> would be the second red flag after that price which is a joke.So you have a company with no address, no phone number, no info whatsoever, selling miners at 1/3 of the price, with ToS copied from a food website and full of spelling mistakes and you think there is still a 0.0000001% chance of it being legit?Oh, and the website that is barely 12 days old, this obviously would be another red flag but the Red Square is already full.

### Reply 2:
Agreed. Just been out of the market for awhile... still running mostly S9s and kicking myself for not upgrading back at $10K BTC.

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23333,"Date: 2020-09
Topic: Unknown Dell Power Supply pinout
### Original post:
Hey all I seem to have a Dell power supply that does not seem to be on any list/website and has its pins defined.Here is what the connector looks like:<link> anyone has successfully gotten this psu to work manually then by all means let me know

### Reply 1:
No i do not have an HP PSU

### Reply 2:
ebay item 401612136913 is a breakout board that works for a lot of these psusso it may do the trick.

### Reply 3:
<link> say that their breakout board X15 should work for the DPS-495AB A psu, but it is not tested.X15 breakout board: <link>

### Reply 4:
do you have a 1200 watt hp psu. that breakout board works on some dell plat psus that I own.

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    ""hardware_name"": ""breakout board"",
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]"
10767,"Date: 2018-10
Topic: (Review/Guide) Hotmine X6 7.4 Th/s, 1150 W Bitcoin (SHA-256) ASIC miner
### Original post:
There is now also a .pdf document version available: <link>

### Reply 1:
(Review/Guide) Hotmine X6 7.4 Th/s, 1150 W Bitcoin (SHA-256) ASIC minerPicture copyright (c) Hotmine.1) General information, other items needed2) Unpacking3) Overview4) Installation5) Configuration6) Performance test7) Conclusion8] How to order Last updated in: September 17, 2018.Nicely formatted version (September 17, 2018) is available for download here (Mega.nz cloud service):<link> General information, other items needed (top)Hotmine X6 is a Bitcoin (SHA-256) ASIC miner using 16nm ASIC chip technology, manufactured by Hotmine (headquarters in Kiev, Ukraine).Hotmine X6 is a standalone miner with a built-in controller unit.The advertised nominal hashrate for miner is 6.4 - 8.6 Th/s with a nominal power consumption of 980 - 1200 Watts.It weights 4.1 kg and outer dimensions are 340mm(L) x 145mm(W) x 155mm(H).Technical specs data sheet: <link> was founded in 2013 and in 2016 they grew bigger, as they became a Bitfury partner and they started making boiler miners and Bitfury 16nm based upgrade kits (X5, X6) for Antminer S5. They have since brought more miner models in to the market, and most of them are fully assembled units.Hotmine X6 is using the same Bitfury BF16BTC8162 16nm ASIC <rest of post truncated>

### Reply 2:
So basically, the x6 isn't getting made anymore?that link goes to the WX12 not WX2, and is $1300 the x6 was $540.. hell, cant even get "" x5/6upgrade kits"" :|yeah ""Everything is different"" gotta go big numbers, like every other company, ignoring the under 1KW people...

### Reply 3:
I'm sure someone will pick up the slack.

### Reply 4:
If this is a little hint... I like it

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    ""hardware_name"": ""WX12"",
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24116,"Date: 2023-04
Topic: Innosilicon T3+ 57th - PSU fans spinning.
### Original post:
Good evening to you all.So i have a Innosilicon T3+ 57th that has been working perfectly, however last night at 4am the miner stopped mining.On inspection the miner is turning on, the PSU is powering up, but the 120mm fans on both front and back start spinning for around 10 15 seconds, then stop.This process just loops over and over, and there is no sign of the miner on my router or network. Any suggestions?Thanks in advanced.

### Reply 1:
Innosilicon units have less support so I don't know if we can help you. However, would you mind checking the miner logs copy them and paste them here put them inside the insert code tag it is a # button while editing your post? So that we have an idea of what caused to the miner to stop mining.What I guess is that the miner is overheating or has power failure.

### Reply 2:
Sure i can try but its not even displaying on my router or browser?

### Reply 3:
It looks like the miner is shorted if you can't able to find it on the router or can't access it through the browser.Would you mind to try disconnecting all cables and PSU and try to clean plugs and terminal with isopropyl alcohol or any board cleaner then replug them and test them again?If still didn't work check some troubleshooting guides below since innosilicon has less support use some guides there as a reference.- <link>

### Reply 4:
Yeah im currently waiting for the seller to ship me a new PSU, ill be sure to take it apart tomorrow to have a look. I will clean the current PSU and refit and let you know, thanks!!!!!

### Reply 5:
Hey people.So i finally got my new PSU for the T3+Still no luck, I'm now thinking perhaps its the controlboard?I have searched for any signs of burning on hashboards, same for the current control board and no signs of error or damage.I also tried the fans and fan emulators, it doesn't seem to be the fans either as i thought perhaps a fan issue would prevent the start up of the miner.It still doesn't get as far as being able to connect to it via m browser either so i cant get the logs!Any help?TIA.

","[
  {
    ""hardware_name"": ""Innosilicon T3+ 57th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""120mm fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner logs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""new PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan emulators"",
    ""hardware_is_owned"": true
  }
]"
11251,"Date: 2023-01
Topic: Will you declare the import amount low when you import the miner from China?
### Original post:
Since the duty and penalty tax are so high.Will you declare the import amount lower when you import the miner from China? What if the customs notice it, will there be more trouble?

### Reply 1:
In my opinion, it's best to leave the authorities off of your trouble radar. Mining margins are already thin, and while the duty fees do take a sizeable amount from your profits, it's a one-time payment and as such it can be offset over several months by amortized mining profits.Lying to the authorities about the quantity of miners will incur even more penalties on you if they find out the true quantity of miners you're importing. Never try to cheat like that (unless you're sending them to some country with lax inspection and customs duties then you might get away with that, e.g. some african country).

### Reply 2:
Asking will you do a crime is not likely to get you honest answers.If I buy from bitmain directly I know I am out 25-35% tax.I figure it in.

### Reply 3:
That's right, i guess most may hide the full amount to save some import duties.

### Reply 4:
Then you guess wrong! More to the point, the buyer has no say in what the value of a shipment is that an exporter declares to Customs. If a manufacturer or exporter cares about staying in business they will NOT 'help' you like that.No one likes it BUT most of us here DO NOT try to 'hide' the equipment cost and NO reputable manufacturer would ever help you to falsify the value of a shipment. A manufacturer or exporter falsifying declared value is a very good way to have their goods banned from entering a country once they are caught.As for the recipient the equipment was destined for, yer boned. In cases like that the equipment is seized by Customs.

### Reply 5:
Thanks for the info, i am not very familiar with thant, i just heard from some shipping agents, maybe they just use their own cargo plane to deliver without doing the customs declaration one by one, kinda confused so far. As you mentioned, it's the best to follow the rule.

### Reply 6:
If the tax is high for you, then it means you shouldn't import it. Declaring fake amounts will only give you trouble. You'll lose more than the tax money and risk yourself for a jail sentence. Is the risk of getting a penalty worth saving a few bucks illegally? If you are seriously into this, then you will do something similar when you run your miners because they don't run on water. They consume electricity and it is not cheap neither. If you can cheat your taxes, you can steal electricity too? Why stop there?

### Reply 7:
If you don't declare the correct amount, and customs open it you'll basically be charged the VAT if applicable, tax, and the admin costs for it to be delivered or worse completely seized, and likely destroyed. So, yeah you should be declaring the correct values on your imports. Factor it in to your mining costs, and profits. If it doesn't benefit you, don't mine. If they did do this, I'd seriously be considering who I'm buying the miner from, and if it's going to be what you even paid for. That would be some pretty shady stuff, with big consequences for them, i.e not worth the risk. Most sellers, and manufacturers are offered an incentive to declare correct values, because it doesn't bite them in the arse. It's up to the customer whether they want to pay those taxes or not.

### Reply 8:
That is aka, smuggling, which is something most countries frown upon... When anyone/company bring in commercial goods across economic borders whether by commercial carrier or carried on the back of a mule most countries will require it to go through Customs.

### Reply 9:
Always pay attention to the rule

### Reply 10:
Thanks, i guess following the rule is the best option.

### Reply 11:
yes it is.

### Reply 12:
Risk jail sentence? For under-declaring imported goods? In what country? But still, I understand trouble for refusing to pay fine once caught, blah blah. But not just for under-declaring goods value! Imagine making typo in customs declaration and insta prison lol. This does not happen.

### Reply 13:
No idea so far, risk exists everywhere we'd better follow the local rule to avoid more troubles.

### Reply 14:
If you really want to save on those import fees than try to buy locally. You can choose for example used hardware or sometimes even new with good prices. What would also be possible to contact the manufacturer. If enough people would do it they can set up a workshop in the US or Europe. They ship the unassembled parts there and can declare a low value, because it is just simple parts. The pay import tax on those low values. Then they assemble it and sell it to you directly locally. Now they can say that most of the value comes from the product as a whole thing. Meaning on most of the price they will not pay import taxes.

### Reply 15:
Any legit seller from China already declares the am<rest of thread truncated>
","[
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  }
]"
22695,"Date: 2018-07
Topic: Surge Protection for Antminer in Canada
### Original post:
Hi. Any suggestions for a power bar with surge protection for the S9i and bitmain power supply for Canada/USA that can handle 20 amp 220/240v? I cant seem to find anything other than 15 amp 12v.

### Reply 1:
Geist PDUs come with surge suppression by default. I recommend one 20A breaker for every two miners if you are using 240V. They are based in the US so shipping to Canada shouldn't be too much of an issue.

### Reply 2:
You can get a whole home surge protector that installs off the main panel. They do take up 2 breaker spots just like any other 220V circuit. They run about 150$ and are pretty good for piece of mind.

### Reply 3:
This topic seems to come up alot, as people just buying miners want to protect their investment. However, unless you arerunning equipment in an old rickety lean-to without a breaker box, ""surge protectors"" are a waste of money. Also, the PSUshould be considered as a ""surge protector"", as they are built to ""pop"" before the equipment they power. Ultimately, it's an individual's choice because they want ""peace of mind"", but a little more research might make your ROI more Profitable. Return to the main mining support section, and type ""surge protector"" in the search bar, it might save you some money.

### Reply 4:
This is what I used. Other options seem too costly. These whole home surge suppressors protect the whole panel.In relation to the post from Shazam: I used to own an IT company and I have replaced many motherboards that took a power surge that went through the PSU and burnt the motherboard - and in some cases even the CPU, RAM, and HD. Also replaced many motherboards and other internals where the power surge came through the modem or NIC. I agree that a lot of times, the PSU, modem, or NIC took the hit and that's where the damage ended. But I saw too many for me to justify not putting a surge suppressor on the whole power panel - as well as a good quality surge suppressor (like APC or other) that surge suppresses the network connection leading to the switch that feeds my miners as well as from the ISP connection to my router. $200 to protect thousands in miner equipment is not a bad investment.

### Reply 5:
I have an older fuse panel box with glass fuses in my home. Does anyone know if the whole home units can be used with the older fuse box like that?

### Reply 6:
Wow, I didn't think about one of those. Are you running your miners off of that? These whole house units have wires that you connect to ground, and the two connections of a 220/240v breaker. The 220/240V breaker connects to both legs of the breaker panel (basically both sides of the service feed). So, if you can run 220/240v feeds from your panel, you would feed the wires for this to the ground, and then into each of your 2 connections you would run your wires to for 220/240V circuits. You put it to the top of the breakers/fuses - so it is first in line to take a surge. The device takes a surge from either leg of your panel and funnels it to the ground. So I don't see why you couldn't use one with a fuse box - you just need to make sure that you protect both legs and put it nearest to first in line from the service entrance side. Of course, it would be good to check with the manufacturer for their input, but I think you would be fine - KEEPING IN MIND - I AM NOT AN ELECTRICIAN!

### Reply 7:
I was thinking similar. Thanks for the help!

","[
  {
    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitmain power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Geist PDUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whole home surge protector"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""motherboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RAM"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""modem"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NIC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APC surge suppressor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""older fuse panel box with glass fuses"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""whole house units"",
    ""hardware_is_owned"": false
  }
]"
16157,"Date: 2021-11
Topic: How much hash are we losing in conversions?
### Original post:
From the point of generation to the ASIC, how much energy are we losing that we could use for hash if it wasn't for conversions and line loss?

",[]
13609,"Date: 2019-02
Topic: New firmware for antminer S9 - less power consumption
### Original post:
Really interesting news for everyone that owns Antminer S9 ASIC miners and other Bitmain BM1387-based models like the Antminer R4, S9i, S9j, T9 and T9+.Bitmain has officially released a firmware to activate the so called Overt AsicBoost for Antminer S9 Bitcoin ASIC miners and will have the firmware for Antminer R4, S9i, S9j, T9 and T9+ within a week as well.This comes just a few days after the announcement that Braiins OS might actually bring users support for Overt AsicBoost. According to Braiins the activation of the Overt AsicBoost functionality on S9 can bring down the power consumption by about 13% which is more than welcome at the current market situation for any miner using Antminer S9 Bitcoin ASICs.<link>

### Reply 1:
New firmware seems to be not compatible with Slush pool (I assume asicboost braiin != asicboost bitmain). Everything gets rejected by Slush with new Bitmain firmware. Will try with Antpool.Has anyone measured actual power consumption usage with the new fw.?

### Reply 2:
On my S9 13.5 Th consumption decreased by 200 watts

### Reply 3:
1 Amp down helps....and looks like similar TH output!

### Reply 4:
I can also confirm that all shares are rejected at slushpool with or without LPM checked. I have also seen that bmminer has been modified with this LPM update.For those that are doing power and hashrate analysis, is this with or without LPM checked? I'm trying to determine if you are getting more hashrate with less power while in low power mode. Also, if someone can do analysis with and without LPM checked that would be helpful.

### Reply 5:
With (and I've updated the post to reflect that). About to try without and see what happens.Update: Toggling the LPM checkbox and applying appeared to have no impact. e.g. Power and performance stayed the same. Power cycling now to see if that changes things.Update2: Power usage is identical with and without the LPM button being selected. Might be normal statistical variations, but performance might be SLIGHTLY (like 75GH) faster with it selected. Running a few more cycles of the test to be sure.

### Reply 6:
Already working on overclocking this new quieter and more efficient one to remove that quiet aspect and increase hashrate. S9 vacuum cleaner being built as we speak

### Reply 7:
About time huh?Good way for them to clear out their old inventory now and why they stopped dropping pricing perhaps.I have one machine testing it out, so far so good.It also seems their antpool went offline and is having a lot of rejects as of 10 hours ago or so.

### Reply 8:
Here are my findings. See images.I only tested 3 machines all s9s.All produced similar savings.12 times (111.7 A- 109.2 A)=30W savings per machineor in % 2.2% savings <link>

### Reply 9:
Tested a 14TH S9 that was received a year ago.Before stats: After stats: Items of note:All cards are running at exactly the same <truncated> is down a lot, almost 15%.Chips are running a bit cooler, fans are running a bit slowerThis puts the ""At-the-way"" power efficiency of S9s at 0.088j/GHThis is with LPM Checked - although the checkbox doesn't appear to do anythingFor those preferring fixed-frequency, the minerAdvanced.cgi non-menu page is still there, but only appears to set the top speed for <truncated> any fixed frequency values previously specified are carried over, and often appear to be modifiable without reverting to auto-freq)(5) of (119) miners had problems upgrading, likely due to having older controller cards.

### Reply 10:
NOTE: ASICBoost FW is not compliant with the BIP310 standard, thus incompatible (for now) with pools other than the Bitmain owned/controlled pools. So, until the other pools adopt compatibility, all this does is make the Bitmain...not Bitcoin...network stronger.I refuse to use Bitmain controlled pools, so it's a ""no go"" for me until broad adoption. That shouldn't be long, however.

### Reply 11:
Not sure what drugs you been smoking, or who told you that, but that's not correct.

### Reply 12:
Then don't take my word for it...yet...FROM SLUSHPOOL NEWS ANNOUNCEMENT:

### Reply 13:
Maybe incompatible on Slushpool, but working fine on Kano (www.kano.is).Come on over and enjoy the 15% power savings and quieter mining.

### Reply 14:
Been there already <smile>:Unit pulled 1405 watts at that setting with the new firmware. Obviously it clocks fine, but other things must be changed to achive the full speed. Of course, power efficiency is not as good.

### Reply 15:
Perhaps, but that still doesn't make Bitmain's FW (or your pool) right/correct or protocol compliant... Want more info on WHY it's not compliant:<link> to 23:45 for specific protocol/pool compliance information.

### Reply 16:
Compliant as defined by Slush? Bitcoin is open source - ""Compliant"" just means the majority of people support it. Otherwise its just another Proposal... you know? The ""P"" in ""BIP""???

### Reply 17:
Working on <rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9j"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 13.5 Th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""14TH S9"",
    ""hardware_is_owned"": true
  }
]"
13695,"Date: 2021-07
Topic: The Most powerful tool created for monitoring and management ASIC miners
### Original post:
Interesting idea, not sure how much it brings to the table since a lot of pools bring notifications with their apps, but it seems that you have it all packed in one place (I only watched the video). You got quite a nice music and voice for that video, but it really feels like I heard that combination somewhere before.As your acc is new and you are under different pseudonim than your ""tool"" in addition to no activity in bitcointalk mining space as well as no merit, I am not sure how many people will trust you with this (I know I won't).I'd give you 8/10 for your website and youtube vid, but I cannot make myself try anything else as of now.

### Reply 1:
Dear favebook,Thanks for your feedback, I understand your concerns about trusting a new platform, because of that we decided to offer one month of free trial so anybody can test our platform from the community.Here I offer 6 months free subscription to anybody from the community that tests and uses our platform and write a review for it on bitcointalk.And about notification feature, pools only inform you when there is a hash-rate drop or when one of the miners is dead after minutes. but in our platform you can customize the notification system, it means you can get notified when device temperature is not normal, or hashrate is lower than a specific number, or even fan rpm is lower than a specific value.So it helps the Farm owners with many miners to detect problems faster, which is hard or impossible with pools.The purpose of Mineitor is to give more control over farms in one dashboard and help the maintenance and monitoring with security in mind.And thanks for the score !

### Reply 2:
I like what I see, seems like an alternative to the great Awoesominer, of course with a better price rate ( sorry Patrick ) , now comes the bad news which is TRUST!I am a little over paranoid with my miners' security and I believe that most other members here are, so to give full access to a random (with all due respect) software doesn't seem like the smartest thing I would do, and the issue is, in this case, you can't say ""try and then judge"" because the consequences are bad, I recently got to know that some viruses are permanent and even Sdcarding the control board won't fix it (I used to think otherwise but now I am convinced).I am not accusing you of anything, but it's more of an internet culture where ""everyone is guilty until proven innocent"", so my advice is: if you found a known and a trusted member who is willing to take the risk - give them more than just 6 months, probably a life-time license because whoever takes that bet will need to set up a VLAN and sacrifice a few mining gears for the test.With that being said, if everything turns out to be legit, you got my support. good luck

### Reply 3:
Thanks Mikeywith for sharing your opinion and your advice. I am aware of what you say and open to any suggestions.I shared your advice with team members and they are positive with your suggestion of the lifetime license for known and trusted members of bitcointalk for testing and using Mineitor. So if anybody is interested please send me a message.I believe TRUST is something that comes with time. We are also open to any suggestions about any features and functionalities.

### Reply 4:
I second that, I forget about those two gentlemen because I seldom interact with them, but as I said that list was off the top of my head, so trusted and respected members are not limited to the names I listed, I hope I didn't offend anybody, I am just trying to help the OP since he is new around.

### Reply 5:
sidehack is good. <link> is good. <link>

### Reply 6:
Thank you, I will contact them to see if they are interested.

### Reply 7:
Does your software support bosminer? There is growing interest from the Braiins OS community for centralized monitoring tools; and apparently, the usual providers have been slow to adapt their software to add the different api fields added/changed from cgminer.If your dev team needs help to implement bosminer support, tell them to visit the Braiins OS Telegram support group. The api is not formally documented, but you could inspect bosminer source code or ask if you have specific questions.If you have an S9 with Braiins OS or Braiins OS+ installed, you might find interesting to inspect this url from your web browser: <link> most important thing of that json dump, is that it shows the api commands you can send to port 4028, so for example doing this on linux:echo -n <truncated> | ncat 10.0.0.2 4028 | jq | grep <truncated> you:Code: ""PowerLimit"": 1200, ""HashchainIndex"": 6, ""Status"": ""Stable"", ""HashchainIndex"": 7, ""Status"": ""Tuner not running"",

### Reply 8:
Hi Artemis3Firstly thanks for suggestion and guidance. The good news is we currently support Free version of Braiins OS and BOSminer. Here is the screenshot of supported brands - Braiins OS inclu<rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  }
]"
13599,"Date: 2018-11
Topic: Windows Vista / 7 Gadget for miningrigrentals.com
### Original post:
nice ty you can use this in windows 10 using <link>

",[]
11342,"Date: 2023-08
Topic: We Ordered and received a new mining box.
### Original post:
space

### Reply 1:
space

### Reply 2:
20ft by 8ft by 8ft.we will cut a hole in warehouse wall for exit air

### Reply 3:
Nice. Bitmain have s19k on their site just now, 120T for 2700W - 23T/J, $2500, seems like a good deal compared to the s19xp at $33/T for 21.5T/J efficiency.Have you considered hydro units?

### Reply 4:
that box has a water curtain and we know to filter the water in to stop sediment.we will do air cooling and water curtain.

### Reply 5:
The letter K next to anything Bitmain is scary, the last time they put a K next to the S9 it was a huge disaster, I wouldn't rush buying the first model of any miner, I'd wait until enough people have tested it and reviewed it, keep in mind, that cheaper miners almost always mean less quality.Nice stuff Phil, I hope you get to phill this little box pretty soon before the halving, is this in the same old farm which you had cooling issues with?

### Reply 6:
yeah the miners are 20 feet to the right of the box.note the wall color is the same

### Reply 7:
Phil, I am not sure if this was already discussed somewhere or you have searched about it but in this project you can also try out ""air curtain"". These are not meant for the cooling purpose but for avoiding the entry of bacteria's, solid particles and other type of contaminant into clean rooms in the pharma industries. I know this because I am trying to understand the mechanics behind different ways of cooling the mining rigs. In case you have dirty water and bad filtration system around the area then you can option out for the air curtain and certainly do some ""experiments"" with it. An Air Curtain is either horizontal or vertical and is fitted to entrance/door. What a miner can do is project the vertical air curtains in such a way that they will throw out the hot air out of the mining box area. The conventional fans are not proper fit because they are big, circular and their sizes limit the ""surface area"" they can cover. Have you ever experimented on this or do you think it can be good strategy for the up rising miners? May be bigger farms too.

### Reply 8:
It is interesting but I have no experience using it.The box we purchased has a water curtain and fans.Clifton, New Jersey has sediment filled water that needs a 5 micron pre filter then a 1 micron filter.We know this from running out hessaire swamp cooler.<link> use this water filter<link> this media in it5 micron first<link> micron second<link> the box has a bigger water curtain then the hessairewe will use<link> micron first 5 micron second 1 micron last<link> on our hessaire swamp cooler the filters above will keep the water curtain sediment free.

### Reply 9:
Yeah, the air curtain I explained is just new experimental approach. Frankly that has wide array of application in the pharma industries and they do use it for keeping the two sections insanely cold. One you have ability to drive the air in various angles. The design is so thin that it fit to any type of miner box you have. It is like region separator so it's not like conventional fans and can get the work done quickly. You are using high number of filters. This must be adding up lot of cost in your overall project. A) I mean the filter cost must be divided in the two stages viz., 1) Filtering unit - one time cost 2) Filters of 5 micron, 1 micro and 10 micron to be replaced now and then since they are not the permanent one. They have to have the wear and tear over the period of time. Is the water that bad in your region? I mean instead of this you should have one big storage tank where you should process the water and store then use. Not sure what's your process?Does the Point A mentioned above is correct in your case?

### Reply 10:
@FlexystarThat would make no difference - the amount of water that goes through the filters is the same... Processing the required amount of water as-needed or periodically in large to-be-stored gulps will on average still run the same amount of water through the filters.

### Reply 11:
yeah the 2 stage or 3 stage case is a one time cost.the filter media adds up .. For our hessaire swamp cooler we use 20x 5 micron media replacements and 10x 1 micron media replacements. so 30 pieces at 2 bucks a piece is 60 a year. plus labor. this machine (hessaire) uses 40-60 galsevery year. edit 40-60gals a day or 1200-1800gals a month

### Reply 12:
Yep I corrected what our hassaire uses 40-60 gallons a day1200-1800 gallons a month.but the two 10 inch by 2.5 inch filter's stop the sediment dead in its tracks.a 99% drop off in the sediment.30 x 2 = 60 dollars a year for 1 hessaire.I think the box will need 3x that and use 3600-5400 gallons a month.BTW the water costs more than the filters cost maybe 50-60 a month in water for the single hessaire swap cooler.

### Reply 13:
Air curtain is used like in the entrance of shops, but i don't think it would work at all for this use. The amount of air mo<rest of thread truncated>
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    ""hardware_name"": ""mining box"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain s19k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain s19xp"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hydro units"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""water curtain"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""air curtain"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hessaire swamp cooler"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""5 micron pre filter"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1 micron filter"",
    ""hardware_is_owned"": true
  }
]"
16109,"Date: 2021-08
Topic: if mining stops , can we sell or use the asic in anything else
### Original post:
if mining stops , can we sell or use the asic in anything else

### Reply 1:
Without unlocking the miner, even this isn't possible because there's no display or input ports on the control boards. Even then, you'd have to write your own custom firmware for it - most normal Linux distros will not install on it since it has an ARM processor.

### Reply 2:
No. ASIC means Application Specific Integrated Circuit. The chips in it were made to do 1 thing and 1 thing only - process SHA256 hashes. The controller part of it, sure it could might be repurposed as a tiny Linux PC but it has very minimal memory, I/O and com options.

### Reply 3:
Ja. Edited my post to reflect that. At least with the S1-S7's you could use the RasPi or Beaglebone boards in them (but would still have to add the missing video and USB connectors to them). The S9's started the ARM SOC versions and rather complicates things...

### Reply 4:
Not much. Some ideas I've seen in the past would be:* heater* door stopper* museum of Bitcoin (mining) historyHowever, there's better chance that an ASIC miner is no longer profitable (needs upgrade) than mining actually stopping.

### Reply 5:
Yes, a few options out there, paperweight, door stoppers, and whatnot, the good thing is that all metal prices go up in price over time, the scrap value for these miners will go up in the long term, there is a fine quantity of aluminum in them, and the fans can be used for something else, IIRC the scrap value for T9 in China back in 2019 was about $15-20$.

### Reply 6:
Mining isn't going to stop.

### Reply 7:
However, if the miners stop when,....! i don't think it will happen, there are exceptions for Bitcoin miners to quit.1. Electricity can no longer operate in the universe.2. The internet is also completely out.Obviously it's not going to happen, even if it does, it's probably on the verge of apocalypse.Of course, if the apocalypse happens, you can no longer sell ASICs, because these devices are only specifically designed to mine digital currencies or other languages, bitcoin generators, in another sense it has something to do with the deep blockchain processformation of new blocks as well as transactions, so obviously this is still related to internet and electric mode.It is quite clear here that it states that ASIC is specially created, cannot be used for anything else, other than digital currency, meaning that it cannot be sold and used in other ways, If crypto/Bitcoin miners no longer exist, obviously ASICs become collectibles, but that's unlikely to happen, except as I said above 'apocalypse'.

### Reply 8:
The T9's MSRP was around $1300 so that means the scrap value is at the worst case more than 85 times less than the miner. Unless you're referring to just the chassis, and there is some other practical use for the onboard parts, I don't think people will bother selling it for scrap.

### Reply 9:
MSRP does not mean anything as far as this subject is concerned, once the miner is no longer proifible/fixable it is only good as scrap, i have seen thousends of miners scrapped, I had a whole topic+video showing that.

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22675,"Date: 2018-07
Topic: Dead S9 Boards, any tips?
### Original post:
I just received some S9's, of the bunch it appears I have two dead boards. I tried different PSU's on each miner, rebooted, updated firmware etc and nothing improved. I know this is beating a dead horse around here, but any thoughts on what may be wrong? I'd like to learn to fix these myself, is there a good thread around here that covers most issues with these boards?Here's the screen shots of my status page for each miner with a dead board:<link> - How come this one isn't showing the Chain #7 stats?<link> - This one shows all 3 chain stats but one isn't hashingI'm gonna try a Bitmain support ticket, I expect they will want to ship the who miner back... Recent posts suggest BitmainWarranty.com hasn't been active?Thanks very much, I'll return the favor when I learn more about this

### Reply 1:
There is ZERO info as to what typically goes wrong. I too would give my eye-teeth to get a handle on it. The only general symptom usually is the Vcore regulator shutting down (red LED light on board near the PCIE sockets not lit). As to *why* -- unknown. Either the regulator itself fails or a chip or bypass cap shorts out shutting it down.

### Reply 2:
I've had two miners with the same symptoms. I made the boards work again by simply changing places with another board in the miner. I suppose it was sheer coincidence that it worked, but what can I say, it worked. So you could try this, too. Just open your miner and exchange the places of the broken board with a functioning board. Maybe it works ^^.

### Reply 3:
This is ALL based on the S7 stuff, so take it with a grain or 100 of salt.I don't believe that, if the s9 is the same, the LED is the regulator. In the S7, the two LEDs are attached to the last chip in the chain's busy / ready lines. These indicate (along with the correct power draw) that at least some data is getting to the end chip. It does *not* mean that the hashes from the chips (or anything, really) is getting back.I don't have any S9 boards to play with, but on the S7 you can check the 14.5v boost converter, which is (due to it being the coldest part on the board) subject to condensation. It's really easy to replace with an ebay special. I have heard people saying that this boost is only to support the end of the chain, but it doesn't seem to - the whole IO chain goes close to 0v if it's not outputting. In terms of the IO regulation, the 14.5v is split over the entire board (3 chip sections) by a resistive divider. This then feeds the approximate IO voltages into linear regulators, which referenced to the ground on each chip appear to provide the *return* (downstream) IO voltage. Easiest diagnostics to do on the S7s is to play follow the clock. You'll need a scope for that a<rest of post truncated>

### Reply 4:
The chips are laid out in banks of three and there are two heartbeat signals one going beginning to end, the other end to beginning. Its actually pretty easy to chase down the problem with a decent multimeter and some patience. You can home in on the bank of chips that is having the problem and then do some resistance and other tests to further pinpoint the issue. The s9 is VERY similar in its layout and troubleshooting can be done in much the same way using the diagnostic points that are located all over the board. Just be VERY careful not to short a test point to a heatsink or you can kill the whole board rather easily.

### Reply 5:
Thanks guys. So based on my screenshots, there's no obvious quick fix hey?

### Reply 6:
No, there never is. If you do all the basic troubleshooting and cant get it back you are basically out of luck.

### Reply 7:
Heh. I sense the voice of experience. The other thing which is obvious, depending on your environment, is remove the boards and have a look. I have one board that is unusable - it looks like somehow moisture got in at the fan entry side (possibly a very quickly deceased large bug) and rotted half of the tracks around the ""middle"" of the chain. If I baby the voltages and speeds, I can get half that board working - but it certainly isn't a DIY effort.These are tiny chips and pretty much every connection needs to work for the board as a whole to work. Send it to a repair shop and you'll have a far more consistent experience than probing with a multimeter (not that I'm saying that Fanatic isn't right - it absolutely is possible to diagnose if you have the time and no perceived value to the boards)

### Reply 8:
Need some advice, should I ship the two whole antminer S9's back to Bitmain for warranty repair (one dead board each)? Or, should I try to ship just the dead hashboards to BitmainWarranty.com and pay them to repair?I'm losing revenue if I ship to Bitmain, but the work should be covered on warranty...

### Reply 9:
I opted for the Bitmainwarranty Denver site, but please realize that this would invalidate Bitmain's original warranty. I got a rather stern note from Bitmain afterwards say<rest of thread truncated>
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    ""hardware_name"": ""Vcore regulator"",
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11112,"Date: 2022-02
Topic: Bitmain in Hong Kong NOT shipping replacement parts!
### Original post:
Bitmain in Hong Kong is NOT shipping replacement parts!I shipped a PSU to them over a month ago, and they still have not shipped the replacement even though they created a shipping label.I contacted them, and they said they are receiving shipments but due to the pandemic they are NOT shipping anything back right now!I'm glad I had purchased an extra PSU for my S19j Pro, because if I hadn't I'd have lost a ton of money.I just want everyone to know what's going on..-Graham

### Reply 1:
How do you contact them?Did you use the official contacts from Bitmain? Or you are dealing with someone?Their contact info can be found here <link> can also try to call them with their support landline number check them here- Domestic and overseas customer contact number- Bitmain Contact support with hotline number

### Reply 2:
Was this for a warranty repair? Bitmain's warranty repair track record has been pretty awful. When my S17s were still under warranty and failing, I sent one to them and it took 4 months to get it back. That was pre-covid, they just couldn't keep up with how fast their crappy miners were breaking. The Bitmain authorized warranty repair service near me in the USA has been advertising off-warrany repair and there have been several reports that people have successfully gotten hashboards and PSUs repaired. But I noticed a couple of weeks ago that their advertisement on Ebay says they aren't taking any more repair orders because their backlog is too long. Makes me wonder if the Hong Kong office is using covid as a convenient excuse, and the real problem is that in-warranty S19s are failing faster than they can repair them.Good call to purchase spare PSUs. Next step is to pro-actively start looking for look for 3rd party repair service near you for when your hashboards start failing.

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16511,"Date: 2023-05
Topic: Usage of a Bitcoin Asic
### Original post:
Hi there guys,I have a simple question: Is there other usage for Bitcoin ASIC?For example, if I want to use it for generate random numbers, and then perform SHA256, would it be possibile to do it?

### Reply 1:
In short: NO.The reasons have already been covered in multiple threads...

### Reply 2:
Many thread is covered that question but I don't know where are these threads already. Bitcoin ASICs are specifically designed for only one purpose and that is mining Bitcoin. They are specialized, and their design is optimized for the SHA-256 hashing algorithm that used by bitcoin.I think it is possible to use a Bitcoin ASIC for other purposes, like generating random numbers and performing SHA256, it is not efficient or practical use of the devices. ASIC is only designed for mining Bitcoin, and it would not be an effective solution for other application. While It is technically possible to repurpose a Bitcoin ASIC for other uses, it is not recommended due to specialized nature of the device.

### Reply 3:
@^^ Um, learn to use a search engine...just enter something like ""using a bitcoin ASIC for other purposes"" and you will get tons of answers. ALL will have the same answer: NO.

### Reply 4:
Nope, you will never be able to do anything else but mine sha256 coins with an ASIC that is designed to mine sha256.An ASIC is a server that you can never take out of its basic use, no other known applications for now.Ultimately, you can reuse the heat produced by your ASIC to heat yourself, or for your water heater, but that's not the point you are interested in I think.If you want more details, I can recommand you to check the Bitcoin Wiki's page dedicated to ASICs :

### Reply 5:
No. Don't forget ASIC stands for Application Specific Integrated <truncated> possible, assuming the input is exactly 80 bytes (which is size of block header). But unless you need to hash billion random number per second, use CPU/GPU instead.

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13646,"Date: 2020-04
Topic: Exploit Antminer S9 and T9+ Firmware ASICBOOST original hacked , FREE RELEASE !
### Original post:
EDITED !Up ! FREE FOR ALL !!! ENJOY !!!

### Reply 1:
Hi ! Download links are not working, Can someone give valid download link ?TNX.

### Reply 2:
I see a lot of downloads but no comments, I am disappointed!

### Reply 3:
When I click your download link in the 1st post, it says download expired on 09/01/2020.

### Reply 4:
UPDATED !Please send your comment after test

### Reply 5:
Thierry4wd, would you reupload, please? Download expired. Much appreciated.

### Reply 6:
thanks for yours tests and comment But is not my firmware, is just my ""mod"" for unlock feature on original firmware With pleasure !

### Reply 7:
Here is the result of my testing. Your firmware works. However, I am getting lower hashrates compared to current firmware with a dev fee! I am downvolting the S9 for power saving.On the current firmware I am using I have stable 9,4Th with the 720Watts drawn on a meter. Settings 445Mhz/8V Dev fee is 1,8% so I am getting effectively 9,2Th for me. This means 12,77 Gh/W efficiency.I tested you firmware.It is fairly stable (one to two-hours each settings) at the following hashrates. Always 8V:445Mhz 8.5Th with 686W, efficiency 12.3Gh/W425Mhz 8.0Th with 644W, efficiency 12.42 Gh/W375Mhz 7.7Th with 611W, efficiency 12.6Gh/W350Mhz 7,5Th with 588W, efficiency 12.75Gh/WOnly at 350Mhz I am getting roughly the same efficiency, but I then I get 7.5Th, not 9.2Th... They did something in the custom dev-fee firmware that allows higher <truncated> your firmware is genuine Keep up the good work. I wonder how it would be with the newest bitmain firmware, but it is not possible to downwolt it without recompiling the ""kernel module"" C++ code - I am rookie so I do not remember the proper names.

### Reply 8:
Hi!Download Links not working, File not found!Could you re upload !

### Reply 9:
anyone have proof of finding a block once they switch over to this modified FW?that is my question with any of these firmwares once they are released.

### Reply 10:
I don't know why my mod not find bloc ? I have say what, just install original firmware (for S9J), and after, install my mod, so, my mod containe only new ""minerconfig"" page, and new booting file, for force miner to start at frequency fixed and take new config on config file (freq / fan / voltage) ...In absolu , is ORIGINAL firmware ! not modified ! my mod is just a proof to bitmain say error on THIS firmware, bmminer is all coded to take all config !

### Reply 11:
@OPHave you tested this in the test net?

### Reply 12:
Yes, my mod run good arround more than 1 years, but, no find BTC bloc, is possible to find only one bloc BTC on 1 years ? i don't know lol , but i find many bloc on shitcoin ... in absolut, is the OEM firmware ! i say and re say !!! Link updated

### Reply 13:
Hello, there is a link for the firmware of the T9 +? I only see for the S9thx

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23254,"Date: 2020-04
Topic: question: searching for long lasting antminers ?
### Original post:
Hello everyoneas the subject speak for itself, I am searching for good long lasting antminers, I am new to the field of minning and i would like to know which of these brands (Bitmain /MicroBT / Avalon) have the best antminers quality-wise, that has good parts in it and lasts the longest possible , and i would like to add that electricity is not a problem as i have very low cost electricity so it doesn't matter if it very electricity consuming .

### Reply 1:
re: Antminer name, no problem. It is very common for various posts, articles, and videos to mistakenly do the same thing because the authors just don't care about being correct. In my book that raises questions about what else they may get wrong The other even more common error is calling every crypto coin ""Bitcoin"". Only BTC is Bitcoin. All others are generally called altcoins and in this part of the Forum, crapcoins...Those are good prices you were quoted, just be sure that it is a reputable dealer you are working with. Personally I don't have any of the M21 series but I do talk with several miners in the pool I use who do have them - overall they are quite happy with them.Given that both MicroBT (Whatsminers) and Canaan have very good products to me it would boil down to what happens if something breaks: Generally the Whatsminer's need to be sent to China for repairs. Canaan's Avalon miners on the other hand are modular with components that are easily replaceable by the user. After sales support from Canaan is excellent meaning once you work with them to diagnose a problem they will quickly send you the replacement part for you to install.

### Reply 2:
These prices are not reasonable by to me at least, below are the current prices in the Chinese marketM21s 56th > $650Avalon 1066 > $6701066 PRO > no clue.** You could probably get them a little bit cheaper.Taking M21s for an example, 1060 - 650 = $410, that's a lot for shipping and some profit, of course, I am totally unaware of the taxes and import fees where you live, so you got to do the maths for that.I own M21s, it's a very reliable gear.Edit: less than 19 days to the halving, I expect gear prices to fall by at least 30%, this is not financial advice, but I personally would not buy any gear now, next month-end is a good time to buy IMO.

### Reply 3:
thank you for the advice bro i've taking it in consideration , indeed it would be easier to repair it yourself than send it back to china.I really was clueless bro thank you for the tip i've just quick searched on alibaba and i was astonished with the prices Whatminers M21S at 600$ and 700$ , because the supplier i've found was taking 1060 dollars for the unit only and about 100$ for shipping plus 20% VAT when you compare it its true that it costs a lot more ,but is it really reliable i would really like to have a reliable source if you could give me one , and thank you for the advice its true we should wait and see how it goes with the halving.

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23460,"Date: 2021-03
Topic: How to determine which hashboard is faulty in S17 Pro 53th
### Original post:
hello everyone, I recently purchased some S17 Pro 53th miners and a few of them are coming up with only 2 hashboards in the miner stats instead of 3. I'm trying to figure out which hashboards are faulty so I can remove them and replace with working hashboards. But unlike the S9s, I don't see a little red light next to each hashboard, so I don't know which one is not working Someone mentioned to me to see which part of the fans are blowing cold air. In one of them the top part of the fans were cold, and the bottom two halves were hot. So I guess the top section of one of the fans were cold. But what does that tell me? I noticed the hashboards are side by side 1, 2, 3, so it's not like it's top middle bottom. So needless to say i'm quite confused.Does anyone know how to determine which hashboard is faulty? Thanks in advance for any and all help!

### Reply 1:
It tells you that you and that person are trying to reinvent the wheel, the kernel log will tell you exactly which hashboard is dead, in fact, it even appears in the miner status (the very page that tells you which 2 hashboards are working fine), if you can't figure that out - paste the kernel log here and a screenshot of the miner status page.

### Reply 2:
thanks for that. Sorry if i'm a newb at troubleshooting As for the miner stats page, If I see 1, or 2, or 3, under hashboards, I guess I don't know which hashboard is which. Like 1, 2, 3, left to right or left to right, from the front of the miner. If that makes sense.I'll post some logs to see if you guys know what is happening, because I just bought these from Alibaba a few weeks ago and they haven't been working right, and it's quite upsetting. I was going to ship these to a local repair facility, but I figured maybe I could put the working hashboards in one unit and the bad ones in another to ship out.

### Reply 3:
The hashboards are sockets are labeled on the control board, just follow the ribbon cable from the hashboard to the control board and you will see each has a number, ignore the number as it's sometimes different on the 17 series but focus order, for an example if you have J4, J5, J6 on the control board, and 1,2,3 on the miner status page, J4 will 1, J5 will be 2 and J6 will be 3. To double-check you can just unplug the cable that goes to the board and then power the miner on to check for any changes.Yes, the kernel log has some useful info in it. You should never buy mining gears off Alibaba and Aliexpres.

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23415,"Date: 2021-01
Topic: Whatsminer M3X version 2.0 mining at 8 TH/s!
### Original post:
Recently I have put to work 23 Whatsminer M3X. 20 pieces which are model 2.2 hash normally at 12 TH/s. On the other side 3 pieces which are model 2.0 hash at around 8 TH/s with all 3 active boards.They have the latest firmware.Kernal log seems ok.Any idea what could be the problem?

### Reply 1:
Posting Kernel Logs and some pictures would be helpful. There is not much we can tell you to try unless we know what the problem might be.

","[
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22149,"Date: 2018-01
Topic: Looking for detailed info on miner Monitoring software
### Original post:
a friend and myself are considering setting up a mining farm at a remote location. With the amount of miners we want we can't use our house. Considering the S9 and AvalonMiner. Most likely the S9. Im looking for remote monitoring software that I can see all the details for the miners form my house or when im away. If possible I would love to have text and/or email alerts for temps going to high, hardware failure, etc. and a remote shutdown options. Is this possible?

### Reply 1:
Awesome Miner, is for you...

### Reply 2:
He is correct! Awesome miner is what you'll want to check out.<link> are also other programs that you can find in the software section. The support team on thisprogram is very active here on the forum. Take a look through the thread, and see the commentsand questions of other users. Goodluck!!!

### Reply 3:
Another satisfied Awesome Miner customer.

### Reply 4:
Recommend Awesome miner as well. You can monitor and control up to 5000 gpus and asics. They also have a cloud service and can be run through open vpn. I restart and switch pools on my s9's from my phone, while at starbucks...

### Reply 5:
Did you have to change it on every machine or just change it in awesome miner and it takes care of changing each machine?

### Reply 6:
Save yourself a lot of time and just go to the Awesome miner thread...Rather good place to find out all you want to know about it.As long as the miners are able to respond it works great. Be aware that some miner faults such as from a very brief power glitch causing the PSU to momentarily trip off will require a hard power-reset to clear. That said, lots of RiPi/Audroni based remote power switches on the net for sale.

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    ""hardware_name"": ""AvalonMiner"",
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    ""hardware_name"": ""gpus"",
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    ""hardware_name"": ""asics"",
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  },
  {
    ""hardware_name"": ""RiPi/Audroni based remote power switches"",
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22487,"Date: 2018-03
Topic: Antminer S9 chain problem
### Original post:
A copy of the kernel log would be helpful in this manner, we will not be able to help from that screenshot.

### Reply 1:
<link>

### Reply 2:
It looks like your first hashing board is not running properly and maybe the hashing board gets too hot that leads to thermal protection so that the hashing board stopped.Could you perform a factory reset? Follow this method and maybe it can solve your issue.First restart your miner then wait for 2 to 3 minutesAfter powering on the miner for 3 minutes, press the reset button in your miner for 5 seconds then releaseThe miner will restart its own automatically for 5 minutesThen monitor and check if the issue still persistYou can follow trouble shooting guide from bitmain if ever the issue not solve. Check here <link>

### Reply 3:
Hey, So i see one of my chains isnt working.. It does not appear to be any broken chips as everything is ""O""Any solutions? I tried restarting it..<link> note: This post was edited by frodocooper to remove inline image tags.)

### Reply 4:
More likely you need to RMA this unit.If you look here you can see that the software is detecting failed chips on your first board.chain[5]: some chip cores are not opened FAILED!Test Patten on chain[5]: FAILED!chain[6]: All chip cores are opened OK!Test Patten on chain[6]: FAILED!chain[7]: All chip cores are opened OK!Test Patten on chain[7]: OK!Looking here we see that it is not able to query the hashing board for its temperature either, which is why there is no temp shown on the status page.do read temp on Chain[5]Chain[5] Chip[62] TempTypeID=55 middle offset=27read failed, old value: Chain[5] Chip[62] local Temp=0read failed on Chain[5] Chip[62] middle Temp old value:0Done read temp on Chain[5]do read temp on Chain[6]Chain[6] Chip[62] TempTypeID=55 middle offset=26Chain[6] Chip[62] local Temp=70Chain[6] Chip[62] middle Temp=81Done read temp on Chain[6]do read temp on Chain[7]Chain[7] Chip[62] TempTypeID=55 middle offset=27Chain[7] Chip[62] local Temp=70Chain[7] Chip[62] middle Temp=80Done read temp on Chain[7]

### Reply 5:
How long will take take them to RMA it? And thera are no X or - on chips so i figured they are ok ?

### Reply 6:
I cant speak as to why its not showing bad chips, I just pointed out the errors the system itself is showing in the kernel log. If you are in the US you can ship to the California depot and from what I have heard recently its a 3-4 week turnaround

### Reply 7:
Ok thanks for the help.. I am trying to send it to hong kong for warrenty but I dont understand something.. It says on their website i have to print repair ticket and put it on the box, but in order to make a ticket i have to write tracking number.. I cant get tracking number before i send the package therefore I cannot put repair ticket on the box before sending the package.Did i understand something wrong?

### Reply 8:
Hmm its seems to be working now.. after hard resting it few times and changing cables from psu

### Reply 9:
Hard resetting a few times solves a whole lot of antminer problems.

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    ""hardware_name"": ""hashing board"",
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    ""hardware_name"": ""psu"",
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13680,"Date: 2021-04
Topic: Most powerful tool for Remote monitoring/management ASIC miners
### Original post:
Giving this a shot on a few machines.

### Reply 1:
opened a support ticket, just need a little help setting it up.

### Reply 2:
Have you checked the documentation page? this shouldn't be hard to set up or else it really needs improvements in terms of the user-friendliness, monitoring tools are usually 1-2 steps of clicking ""next"" and then entering in IP range to scan for miners and all your miners that have active APIs and could connect will show up.

### Reply 3:
I had set it up one one computer that didn't work and set it up on aa different one. It created 2 controllers and just needed the first setup deleted to apply the trial to the second one so it would work. That's all. I'm looking forward to using it and it looks great.

### Reply 4:
Hi oxlithiumxo,Nice to see you using our service, If you have submitted a ticket, our support team surely have replied your ticket and hopefully helped to solve your problem. Always feel free to talk to our website live chat support to get quick help. I hope you like our service and it helps you. It will be great in the future if you have shared your experience here with others.Also thanks mikeywith for your response. Yes the setup process is fairly easy straightforward. I guess oxlithiumxo had installed it on two different PCs, and had a problem with trial activation.

### Reply 5:
Support was great! I really appreciate their help. Up and running, testing it out. Works great.

","[
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  },
  {
    ""hardware_name"": ""computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""different computer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PCs"",
    ""hardware_is_owned"": true
  }
]"
24075,"Date: 2023-01
Topic: Avalon A1166 continuously reboots BOOTBY[0x10.80028DD4]
### Original post:
Bootby is an unknown reboot according to Canaan description logs and another thing that I notice is that some chips reach Tmax more than 85c look at the logs.So possible it's overheating which is why the miner reboots.Can you try to improve the air circulation in your room to cool down the miner a bit or try to increase the fan speed to help the miner cool down?To manually set the fan speed use this command <truncated> is not permanent if the miner reboots the fan speed will run again at the default speed.

### Reply 1:
Thanks for answering.Room temp ist about 17c air circulation is good.I see what you mean. It's the HashBoard 0 (PVT_T0) with some >80c entriesI think this could be the board beside the psu.Actual Temps: <truncated> check if the heatsink screws are tightened and set fan speed to 90 as you said

### Reply 2:
I think its an bug in the latest firmware.After downgrading to version <truncated> there is no more reboot since 24 hours.The only difference are Hardware Errors in the log (3601)Any idea why i can't see the ""pies"" in any browser i tried <truncated>

### Reply 3:
The hardware error might be due to overheating and maybe the latest version automatically reboots the miner when some chips reach 85c but for older version reads it as hardware error.Anyway, the dashboard looks like its running fine now.About the pie chart I think you need to try accessing the miner through incognito mode in chrome if it doesnt work try to factory reset the miner.Follow the guide on this link below on how to reset it to factory settings.- <link>

### Reply 4:
Thanks for this helpful link.I've tried both, but nothing helped.Maybe Anna Luo from the avalon miner support can help me

### Reply 5:
What I guess is that the program itself is corrupted after you downgraded it to a lower version try to reflash it again with the same firmware or I guess the firmware that you flash is corrupted try to redownload the file and reflash it again. If it still doesn't work try to revert it back to what it was before or reflash it to the latest version. Maybe the older version have bugs to pie chart so upgrading it to the latest version should fix this issue.

### Reply 6:
It wasn't working before the upgrade.But i'll give it a try.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""HashBoard 0 (PVT_T0)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heatsink screws"",
    ""hardware_is_owned"": true
  }
]"
16411,"Date: 2023-01
Topic: Pool comparison site(s)
### Original post:
Is there a recommended website or something that helps compare pool performance , fees , features I am trying to find a comparison site for pools to optimize mining operations for the best ROI . Thanks folks

### Reply 1:
<link>

### Reply 2:
I am quite fond of this site it shows you all you need and more: <link>

### Reply 3:
Excellent thanks so much very useful

",[]
13819,"Date: 2023-03
Topic: [Historical mining software] MacMiner
### Original post:
<link> is something I found while I was on the Bitcoin Wiki and flipping through random pages.This is a manager for Mac OS X written in C++ that supports ASICs and FPGAs. So it's not necessary some CPU miner from the bygone age.Side note: I wonder how you even insert an ASIC into a Mac in the first place, as even if they have the correct plug type, it still has to be recognized and exposed by the kernel.

### Reply 1:
It's partially explained on their documentation, <link> In short, you need to install the driver manually. I don't know about port/plug type, but at least Block Erupter (which mentioned on their docs) use USB port.

### Reply 2:
I think it should be a PCIe riser or through Jtag where you can connect FPGA to a laptop or Macbook.But the problem is there is no FPGA driver for MacOS no one yet develop it. I heard someone use parallel virtual to install Linux or windows to run FPGA but there is no proper guide on how to do it.I saw this guide below but it only contains a guide on how to make FPGA work on MacOS using parallel.- <link>

### Reply 3:
I'd guess it is just that and nothing more i.e. not a miner, just a miner status viewer.The PGA0/ASC0 names highly suggest it is talking to my cgminer API to get miner status info from a miner elsewhere on the computer's network.

","[
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  },
  {
    ""hardware_name"": ""FPGA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Block Erupter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PCIe riser"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jtag"",
    ""hardware_is_owned"": false
  }
]"
22531,"Date: 2018-04
Topic: Preventing rust on the Antminer S9
### Original post:
Although initially only the fan grates seem to rust, eventually the controller board rusts dead as well. What are some effective ways to slow or stop the S9 from rusting?<link>

### Reply 1:
You have too much moisture in your environment..

### Reply 2:
Put a dehumidifier in the environment - keep the humidity down.

### Reply 3:
I think there might be too much airflow to use traditional dehumidifiers. Even a large-scale dehumidifer like the dd1200 processes less than 1000 CFM. Compare that to a single antminer s9, which moves at least 100 CFM.Would a ratio of, say, 1000 CFM dehumidified air + 9000 CFM ambient air be enough to have a noticeable difference on 100 miners? Or is there some easy solution to this problem that I am missing?

### Reply 4:
I don't know what your set up is. If you feel a dehumidifier can't keep up have you thought about placing a dessicant inline with your air intake?I've never had to set anything up like this myself but it's what is used in boilers to prevent moisture. What ever it is that you use if you have a hot side to your setup you can use the exhaust air to regenerate your dessicant.<link>

### Reply 5:
I really appreciate this suggestion, but I don't understand where exactly you're thinking the dessicant would be within the intake process? The cooling process is passive, with ambient air entering a colder side, where it is run through the miners and exhausted again. The airflow is much too great to not have the dessicant inline somewhere, but it doesn't seem practical to have it right in front of the miners' intake fans. Perhaps lining the walls with dessicant breathers/filters is the best solution.

### Reply 6:
Well, it's hard to give a solid answer without much info. What are the details of your setup?

### Reply 7:
Yeah, you definitely don't want them near the intake for the miner itself.What I'm suggesting is where the intake air for your mining room is should have the desiccant located there. This way as the air enters the room the moisture is removed. You could have a wire rack at the air intake with these packets hanging off it. Again I don't know what you have for a set up but this would cut down on the moisture in your air enough that it should no longer be a problem for your miners. good luck

### Reply 8:
Thanks for the suggestions so far, I should have clarified a bit more at the beginning. Local ambient air enters through approx area 300 m^2 and is exhausted at a rate of ~1k m^3/s.Probably the easiest solution, how often to change the desiccant though?

### Reply 9:
It's hard to gauge how often you will need to change it out. It might be worth having a dehumidifier, or at least a sensor monitoring the humidity in the room to give you an indication of when the desiccant has stopped doing it's job.It will also help with the moisture that isn't being absorbed. Then like I said you should be able to place the desiccant on the hot side in the path of the airflow and the warm air should remove the moisture and exhaust with the hot air. This is the process of regenerating your desiccant. You would pretty much just repeat this process as often as is required.Like I said I've never personally set this up but I think it would benefit you and your machines, hopefully it works out well for you. If you don't mind me asking are you near the coast in BC is that where the problem is coming from ?

### Reply 10:
Now I understand what you mean about regenerating the desiccant. Together with a humidity sensor, hopefully the rust problem can be addressed. Thanks!And yes, these machines are only 5-10 km from shore.

### Reply 11:
Saltwater has a strong effect in corroding metals.

### Reply 12:
Unfortunately so. At this rate, it is just a matter of time before more controller boards rust dead. Do you think bitmain would still cover repairs under warranty if there are obvious signs of rusting?

### Reply 13:
I think they might noticy if those signs are obvious.You really need to try to fix that environment or move your miners to another location.

### Reply 14:
I'm gonna say they'll take a hard pass. The likely response would be something along the lines of <truncated> as opposed to their hardware.There are places that I think do out of warranty repair but it's at your own expense. <link> on the list is the out of warranty repair in the US. I've never used them so I can't speak to the service.

### Reply 15:
For out of warranty repair Bitmainwarranty is going to be your best bet, they're reputable and I've ordered parts and currently have an S7 hosted with them that has been up continually for about 5 months with no issues. Their new MyRig.com site isn't the greatest and they've stated that they are migrating from Bitmainwarranty.com for months now, but things are still broken there. Besides that, they're a good choice for repair.Lightfoot (a user on this forum) was doing repairs for multiple miners includin<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""dehumidifier"",
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  },
  {
    ""hardware_name"": ""dd1200 dehumidifier"",
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  },
  {
    ""hardware_name"": ""dessicant"",
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  },
  {
    ""hardware_name"": ""humidity sensor"",
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  {
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22758,"Date: 2018-10
Topic: antminer s9j new, rebooting
### Original post:
The new s9j (01.10.2018) starts up normally, connects, moves and after a few minutes reboot, restarts. I tried reinstall firmware from bitmain website, restarting, rebooting, reseting, I changed the PSU, I disarmed the 3 hash plates per row, I left only the control board doing the same after connecting to the pool at a few minutes it restarts l .And in kernel I found this: bmminer not found, restart bmminer ,the defect appears to be the control board for S9j. Please, what should I do?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 page<rest of post truncated>

### Reply 1:
I don't see any error message from kernel logs except for fan ""FAN PWM: 40"" so it looks like the front fan speed is low compared to normal s9 fan speed. Can you try to change the fan speed to the higher value, 70% or higher might solve your issue. You can follow the guide from here <link> it doesn't work try to reflash it again with auto_freq firmware. If you still doubt to control board there is a guide that you can follow to fix a corrupted control board you can check it from here <link>

### Reply 2:
Also if you have a spare PSU lying around try swapping that.

### Reply 3:
The control board went on, the red LED turned on and did not start ... at the warranty with him

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  {
    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""3 hash plates"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""front fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""spare PSU"",
    ""hardware_is_owned"": false
  }
]"
11277,"Date: 2023-03
Topic: Replacement of  s19jpro 2.7A 6000RPM  original FAN  to 3.12A 7400RPM
### Original post:
I have some Ipollo B1L with 60 Th/s they have 4 3.12A FANs with 7400 rpm. All hashboards never exceed 65C. So I want to know what do you think about replacing the four of my other S19jpro that came with 2.7A and 6000 RPM, cause when I have some hot days of around temp 28/30C the Chiptemps rise to around 80C. Besides Ipollos has different disipation config inside, do you think I will see an improvement of lowering the temp if I replace the 4 FANS from 2.7A to 3.12A ?? any possible current problem on circuits??? anyone has ever done this kind of replacement?? thanks a lot for the reply

### Reply 1:
If the fan from apollo is compatible to s19j pro with 7400 rpm then it should work but I do not know if the fan will run normally because I heard someone from Reddit replace the fan from other models into antminer units the result become abnormal RPM like 6000rpm it turns to 60,000rpm.There are two different fans the brushless and the ball-bearing one Bitmains recommends only brushless fans.If you want to cool down the miner a bit when hot days then I suggest run the miner at low power mode and make sure you have proper way to take the hot air out from the room like adding ventilation and exhaust so that the hot air on the room do not stuck.

### Reply 2:
nice answer. How can I switch the miner to low power mode?? or I must change the firmware? under modes I only has Normal mode and Sleep mode !

### Reply 3:
blockchain is so dull and boring we have posts about fans again to make mystery out of how cooling works like its some big mystery how air cools hot and how the chips require a certain temperature to operate because the stupid mfg said so. throw your miner in the garbage.

### Reply 4:
bitmain has a low power firmware download for your miner.

### Reply 5:
Yes, you can find that firmware here - <link>

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  {
    ""hardware_name"": ""3.12A FANs with 7400 rpm"",
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13733,"Date: 2022-01
Topic: BFGMiner CGminer bitcore I have 2 problems please help
### Original post:
when I create a wallet for bitcoincore it looks like <truncated> and bfg miner doesn't take it from me how I can do it to take it or it is possible to create a standard wallet on bitcoincoreand when I enter in bfg it writes to me (No servers were found that could be used to get work from) but bit config I have settings according to the video tutorial and it works for himbit <truncated> -o <link> -u testuser -p testpass --generate-to <truncated> --stratum-port 3333video tutorial<link>

",[]
23531,"Date: 2021-04
Topic: Any news on flashing firmwear now ssh has been dissabled?
### Original post:
Hi all,In short I've spent my today trying to flash firm wear on to a T9+ I purchased on eBay. After trying to flash I keep getting no signature errors and after some researched tried to use ssh to flash but that also failed as apparently that in more recent firm wears they've disabled ssh onto the machines. Has anyone found a work around for this yet?Thanks for any suggestions

### Reply 1:
If you flashed it recently with 2019 firmware then your miner is SSH disabled.To enable this back there is a way to flash it. Try to flash it with an SD card you can follow the guide from this link below.- <link> check this guide <link> s9 but I believe that the t9+ control board and s9 are the same.

### Reply 2:
When I try to do this via the SD card with the jumper both the LEDs on the front remain on and the board does not flash, I thought that this had also been disabled or do I have a faulty board? thanks for the help

### Reply 3:
Are you sure that you burn the image firmware to the SD card?If it's not flashing try to use the image firmware from awesome miner you can download them from this link below.- <link> can unlock the disabled SSH in your miner.If it still doesn't work try to clean the slot of the SD card from the t9+ control board it might be full of dirt.

### Reply 4:
They did disable the Sdcard thing on the newest models according to some people, but the T9 is too old for them to care about, you can probably still Sdcard it even if the latest firmware is installed, make sure you use a small size tfcard.

### Reply 5:
The SD card slot is clean and its a small 4gb card so that should be fine. What do you mean by burn the image to the SD card? The guides seem to say that you need to just copy the extracted file to the card. I tried burning the image to the card using Rufus but I had an error of failed to scan image - I may just be being an idiot here.

### Reply 6:
It seems there is no .img file inside the tool it's a raw image firmware that works on old miners but the .img file for t9+ seems never exist.Anyway, have you formatted the SD card to FAT32? Try to format it again and copy all files again to the root directory of your SD card.If still doesn't work or it doesn't show any led signal when flashing check the jp4 if it's well attached.Also, try another SD card, and maybe the SD card you currently use is broken which keeps files you copy <truncated> it's successful flash it again through the WebGUI use the 2017 firmware below this one is already deleted on their download page but the link still working.- <link>

### Reply 7:
I've tried all of this, unfortunately to no success. looks like ill have to bite the bullet and buy a new board (reason for wanting to flash is that one of the fan connectors is broken and I wanted to disable it). looks like even on the T9+ the latest 2019 firmware also disables SD card flashing. Thanks to all for helping me

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    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""4gb card"",
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]"
22282,"Date: 2018-01
Topic: Ebit e9+ login issue
### Original post:
i have been running my Ebit e9+ for couple of months now smoothly.. until today. they seem to have gotten disconnected from the pool (they are still blinking green so i'm assuming it's hashing). the problem i'm facing now is that when ever I try to login to the WebUI i cant. it keeps taking me back to the login page. any help would be appreciated. Note: i tried hard resetting it that didn't help either. and it happened to all of my miners at once.

### Reply 1:
Are you using browser when logging in? Try to clear cache and cookies of your browser.. If this still not working try to upgrade your firmware to latest try to download it here <link> but i don't know if the firmware includes flasher if there's no flash tool included better to contact their support you can find the contact details here <link> also check this guide maybe you forgot something that is why you can't login. <link>

### Reply 2:
I have tried to clear my cache and tried multiple PCs/Laptops.How would I upgrade the firmware if I dont have access to the webUi and the Ebit mini utility doesnt identify the miner?Thanks for your feedback

","[
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    ""hardware_name"": ""Ebit e9+"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""PCs/Laptops"",
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]"
23361,"Date: 2020-11
Topic: Please Help ANTMINER S9 newbie TROUBLESHOOT! Red flash on start. NO LIGHTS!
### Original post:
hi, your kernel showing ONE fan lost or defected ... You need replace one fan, on other than slot 5

### Reply 1:
Are you sure sure its the fan? I know the log says about a fan. Would it still show no hardware? They spin and everything and change speeds. Thankyou so much. Can i get a fan testing kit? If thats true and I can prove it then please send a bitcoin adress for my appreciation

### Reply 2:
When the fans don't work, the miner won't initialize and that would result to so many weird errors, there could be other problems but without fixing the fan first - there is nothing you can do.if 1 fan spins it will cause the other fan to spin even if the latter was dead, if you unplug the good fan, you will notice that the dead one will stop spinning.What kit do you need? just follow the 4 pin wire from the fan to the control board, you will find fan5 and fan4, the one attached to fan5 is the bad one (if the wires haven't been tampered with, fan5 is the exhaust (rear) fan), the best way to confirm this is by switching the wires, fan5 goes to fan4 and vice versa.Results will be1- Fan5 is good, fan 4 is bad > (original fan 5 is bad ) which is the most likely scenario2- Fan4 is good fan 5 is bad > (fan is good, something else is bad) this is very less likely to happen.also notice that your control board might have fan5 and fan6 instead of fan4 and fan5, it doesn't really matter.

### Reply 3:
Firstly i was being silly and tried to power it down for noise manually because I have no point of advice until now. I unplugged 2 asic boards leaving middle plugged in and the suction fan on one side. Powered itself down a few times but was a bit quieter. Did I break the middle board? I took it out and I only see heatsinks. Should I get a spare? When i find out how to cool it in mineral oil can I simply unplug one of the fans or will that pause the loop and cause an error? I surely don't need 2!OVERVIEW:shows no hardware version.MINING STATUS:No ASICS listed at all!!!!! (Will it run on one card as I imagined if it were working?) * I believed they had only 3 cards originallyI CAN'T REMEMBER WHERE BUTThe fans all say 0,0,0,0, and so on.I can access the log:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000]<rest of post truncated>

","[
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    ""hardware_name"": ""ANTMINER S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""heatsinks"",
    ""hardware_is_owned"": true
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]"
23272,"Date: 2020-05
Topic: combining 2 C13 plugs
### Original post:
Hey guys,short question: we have PDU's installed that only have C13 plugs. Is there a way to combine the power of those plugs? because a current miner we use draws more power compared to the rated power on the plug AND has a C19 connection.so far, all my ideas are not very ""legal""..thanks!

### Reply 1:
Not to code edit cheaply.what is the pdu plug to the wall? l6-30p? or l6-20p? is the mining unit 3000 or 3300 watts?

","[
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    ""hardware_name"": ""PDU"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""C13 plugs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
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  {
    ""hardware_name"": ""C19 connection"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""l6-30p"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""l6-20p"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""mining unit"",
    ""hardware_is_owned"": false
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]"
22672,"Date: 2018-07
Topic: Advanced IP Scanner reports access denied
### Original post:
Before any attempt to look at miner via web interface just looking for it with IP Scanner get this.Click on small triangle to left of ip findings =HTTP 401 - unauthorized (lig<link> 1.4.32)Once you goto web interface and try to logon with root root box just keeps asking for id and password.Any ideas where this comes from? How to fix?on a different antminer that is working ip saysHTTP LuCI Lua http config

### Reply 1:
is this a new miner from Bitmain or something you bought elsewhere? Almost sounds like somebody changed the root password.Try SSHing in via something like Putty and see if the real root password works: root/admin

### Reply 2:
This was my first thought too.I would try doing a hard-reset of the miner, setting everything back to default. If this isn't possible does your model of miner have a microSD card?

### Reply 3:
Have tried resetting every way possible - no go.Used item bought. Thought about changed password but why would that show up in ipscanner even before any id or password is asked?Have SD card but not ready to try that yet.Will look into Putty but I am not familiar with SSH but should be able to find password info.

### Reply 4:
Ipscanner is just a software to scan alive IP's and it should not give you any ID or password. Use the default password ""root"" and if you are using SSH your ID must ""root"" and password is ""admin""I think you need a guide to setup your miner and let me ask if what miner you have now?Anyway, if your miner is s9 you can follow this comprehensive guide from dogie check this [Guide] Dogie's Comprehensive Bitmain Antminer S9 Setup [HD]And here is the another guide from HagssFIN, check this (Review/Guide) Antminer S9 13.5 Th/s, 1320 W Bitcoin (SHA-256) ASIC miner

### Reply 5:
Might be rights/permission between router (Arris) and the Antminer.Any one know how to check rights or permissions?Edit -- Update ------- Update ---------- UPDATElearned first post in this thread incorrect. The screen where it asks for id and password at first I thought that was the Antminer login screen. Now I see it is NOT the Antminer login screen.It is a screen showing that the Antminer has no rights to connect to the router and it is asking for id and password. I tried the router id and password but no go.It is able to supply an ip to advanced ip scanner and it will also find the ip and mac address via the Bitman IP finder by pushing the report button.So, very sure it is a rights / permission problem. I am searching for data of how to set rights but so far no luck. I can login to the router but find no method of setting rights.

","[
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  {
    ""hardware_name"": ""antminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""microSD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router (Arris)"",
    ""hardware_is_owned"": true
  }
]"
24035,"Date: 2022-10
Topic: s19j pro log.....
### Original post:
Just got s19j pro and reviewing the log.... i seen bad sector, so im trying to see if they sent corrupted something... If anyone could take a look would be greatly appreciated...... [ 0.000000@0] Booting Linux on physical CPU 0x0[ 0.000000@0] Linux version 4.9.113 <truncated> (gcc version 6.3.1 20170109 (Linaro GCC 6.3-2017.02) ) #1 SMP PREEMPT Thu Jun 9 13:22:51 CST 2022[ 0.000000@0] Boot CPU: AArch64 Processor [410fd034][ 0.000000@0] earlycon: aml_uart0 at MMIO 0x00000000ff803000 (options '')[ 0.000000@0] bootconsole [aml_uart0] enabled[ 0.000000@0] efi: Getting EFI parameters from FDT:[ 0.000000@0] efi: UEFI not found.[ 0.000000@0] 07400000 - 07500000, 1024 KB, ramoops@0x07400000[ 0.000000@0] <truncated> <truncated> <truncated> len:4 MiB[ 0.000000@0] 05000000 - 05400000, 4096 KB, linux,secmon[ 0.000000@0] cma: Reserved 16 MiB at 0x000000000f000000[ 0.000000@0] On node 0 totalpages: 65536[ 0.000000@0] DMA zone: 1024 pages used for memmap[ 0.000000@0] DMA zone: 0 pages reserved[ 0.000000@0] DMA zone: 65536 pages, LIFO batch:15[ 0.000000@0] psci: probing for conduit method from DT.[ 0.000000@0] psci: PSCIv1.0 detected in firmware.[ 0.000000@0] psci: Using standard PSCI v0.2 functio<rest of post truncated>

### Reply 1:
Which logs you seems is corrupted I can't seems to find the corrupted logs you mean?Would you mind to edit your post and put all of your logs inside code tag it's a sharp # button that you can find when editing the thread.If you feel its corrupted why not flash the unit with latest firmware from Bitmain?

### Reply 2:
I skimmed through the kernel log and there doesn't seem to be anything out of the ordinary, when reading kernel logs you want to pay attention to the following:1- Fan errors:They usually appear in the first few lines of the kernel log, your fans passed the test and they are within the required RPMs.2- Voltage related errors:This happens after the fan check when the miner starts to test the voltage coming in from the PSU going to the hashboard which usually indicates a bad PSU, yours shows no voltage-related errors.3-ASIC count:This is the most important and most issues happen here, you need to know how many chips each of the hashboards has, either by doing a google search or comparing the count with a good board, yours reads 126 chips on each of the three hash boards which means great <truncated> 22:24:30 Chain[0]: find 126 asic, times 02022-10-26 22:24:32 Chain[1]: find 126 asic, times 02022-10-26 22:24:34 Chain[2]: find 126 asic, times 04- Hashrate:If you are a lazy person and don't want to deal with the 3 points mentioned above, in most new miners the kernel log will display the average hashrate, if it's within -+5% of what's mentioned on the miner's box, it usually indicates th<rest of post truncated>

","[
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    ""hardware_name"": ""s19j pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  }
]"
22990,"Date: 2019-06
Topic: Antminer S9 not showing ASICs
### Original post:
Hi,I really hope someone can assist me... I have the AntminerS9 which has stopped mining and in ""Miner Status"" no ASIC is showing up. I found a post about loading specific firmware, but in my stupidity and trying to fix the miner I installed the 2019 firmware and cant downgrade the firmware now. Below is the Kernel log, any advise will be greatly <truncated> = <truncated> 0, ""method"": ""mining.subscribe"", ""params"": <truncated> <truncated> 1, ""method"": ""mining.subscribe"", ""params"": <truncated> <truncated> 2, ""method"": ""mining.subscribe"", ""params"": <truncated> S9/12500""]}avg hash rate = 0.000000, ideal hash rate = 0hash rate is low...re_open_core enterBefore read Chain[J6] org <truncated> read Chain[J6] new chain_voltage_pic=6 read pic=6Before read Chain[J7] org <truncated> read Chain[J7] new chain_voltage_pic=6 read pic=6Before read Chain[J8] org <truncated> read Chain[J8] new chain_voltage_pic=6 read pic=6Chain[J6] has 0 asici = 5, retry_count = 0, <truncated> = 0retry Chain[J6] has 0 asici = 5, retry_count = 1, <truncated> = 0retry Chain[J6] has 0 asici = 5, retry_count = 2, <truncated> = 0retry Chain[J6] has 0 asici = 5, retry_count = 3, <truncated> = 0retry Chain[J6] has 0 asici <rest of post truncated>

### Reply 1:
This a common issue , if all 3 hash boards are not showing then it's likely the control board and not the hash boards them selves.If you have another working miner, use it's control board to confirm that the hash boards are fine, and then start trouble shooting other stuffHere are a few things you can start with.1- Try a different PSU2- Perform a reset using the 2 methods ( reset button and IP report)3- flash the latest 2019 firmware 4-use an SD card to flash the 2018 firmware ( the one you found in that topic) or flash braiins os.If all fails and you are certain the hash boards are fine, simply buy another control board.

","[
  {
    ""hardware_name"": ""AntminerS9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
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]"
13749,"Date: 2022-03
Topic: Asic.to Firmware 17Series • Optimized efficiency/Performance • on over 300k Asic
### Original post:
S19, S19 Pro, T19, S19j, S19j pro, S19 Hydro firmware about to hit the shelves. Whole new system too Also 2 other miners that are not to be named

### Reply 1:
Hmm - posting lies about me above to further your illegal agenda ...--So I went to your site asic.to listed in the first post and there's a blue download link at the top.I clicked on it.This shows a list of firmware I can download.So I clicked on one and it took me to your downloads here:<link> I downloaded <truncated> the tar file there's an image file for the firmware: fw.tar.gzIn that tar file there's an image file for to the miner: <truncated> that file gives the image file that contains <truncated> provide me with the source code download for the cgminer you are distributing in your firmware.It is a requirement of my cgminer license that you provide it.

### Reply 2:
You know what the license is, you know this isn't relevant.The GPLv3 license quite clearly states that if you distribute cgminer, you must provide source code on request.You are distributing cgminer, you must provide source code on request.That also includes the code you are clearly stating you are injecting.

### Reply 3:
Go Kano! anyway, whoever making these custom firmware and charging fees to the miner should give some of the fees to KANO for his contributions to the cgminer or donate for a good cause Also wander any antguardian type software distribute cgminer? or they just use API and not subject to GPL?

### Reply 4:
We donate and build wells in African multiple times a year with thewaterproject.

","[
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    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19j"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19j Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 Hydro"",
    ""hardware_is_owned"": false
  }
]"
11331,"Date: 2023-07
Topic: BM1387
### Original post:
I need the pinouts and possibly the datasheets for BM1387 and also the register map, is there anyone out there who's willing to help?

### Reply 1:
No one yet shares a datasheet for BM1387 here on the forum but Skot might be able to help you because he is developing bitaxe with BM1387 chip.You can also check this post below you might get some information that you need about this chip.- <link>

### Reply 2:
You can find the circuit diagram and pin diagram of the BM1387 chip in the S9 hashboard repair manual. However, no information about the register map. Or as BitMaxz said, contact Skot as he was also looking for this information.<link>

","[
  {
    ""hardware_name"": ""BM1387"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 hashboard"",
    ""hardware_is_owned"": true
  }
]"
22814,"Date: 2018-11
Topic: Best warehouse design?
### Original post:
I might be able to get a custom modified warehouse, roughly ~2,000 SF, rectangular shape.Can anyone recommend window and garage placements?What I've seen in many large mines is big fans along the sides of the warehouse,any help is appreciated

### Reply 1:
Some others can weigh in, but due to heat produced through the mining process, I would put the windows facing north so that you don't have as much sun load. Might also be a good idea to make some ventilation holes at the bottom of the shed and another one at the top so that you can get a natural air draw since hot air would rise, the holes at the bottom would pull the air from the outside as hot air leaves through the top. Best of luck.

","[
  {
    ""hardware_name"": ""custom modified warehouse"",
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  {
    ""hardware_name"": ""big fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""windows"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""garage"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ventilation holes"",
    ""hardware_is_owned"": false
  }
]"
22211,"Date: 2018-01
Topic: Can my S9's run without my presence
### Original post:
So I found a Data Center that is willing to house my January Batch S9's. They have proper temperature conditions and great security for these machines. The only problem is that this Data Center is about a 6 hour drive for me. I have yet to start mining, and I wanted to know if I need to be physically present often in order to maintain these machines(resetting them,etc.). I would like to just drive there once for the setup and not come back too often. Is this possible with the natures of mining with the S9's? I would appreciate feedback from someone who owns these. Thanks.

### Reply 1:
I manage a large number of s9s and for the most part you do not need to be there. In rare instances the miners will freeze or need a physical power cycle but that is pretty rare.

### Reply 2:
How rare?

### Reply 3:
If you leave them running at the same pool, very very rare. Every now and then after a pool switch, I can get an occasional ""glitch"" where the miner doesn't totally reset and instead is just blowing out ""COLD"" air. Only happened once. All others I was manually able to get back in to the miner via remote and ""reset"" it.

### Reply 4:
I leave mine alone for days at a time, but I only have 10 at the moment. I'll be getting another 11 next month. I'm using Awesome Miner to keep track and control. With a vpn service either through your router or 3rd party you can control thousands of machines ASCIC and gpu through Awesome miner. I love it.

### Reply 5:
I have units with 80-90 day uptimes witout being touched.

### Reply 6:
I was wondering if I could set up a wifi power outlet unto each antminer so I can remotely restart the power on it if I have to. I'm including a link. What do you guys think? Is it possible to set up my firewall to control this?<link>

### Reply 7:
You said you would be hosting in a data center. If that is the case they should have switch mode PDU's that allow for remote power cycling. I dont know of any crypto DC that would let you put your own power control in like that.

### Reply 8:
Are these PDUs able to reset individual S9s? I would not want to reset all 20 of my Antminers for just 1 of them. Wouldn't I lose money that way since the hashing would be interrupted?

### Reply 9:
You can purchase PDUs with switched individual outlets. They have a web interface which you can log in to and control the outlets. Most hosting facilities usually provide some sort of service for a fee or a certain amount of time built in to your contract where someone on staff will do small tasks for you.

### Reply 10:
I bought some used sentinel pdu from eBay, they have a remote interface and I can cycle each plug and monitor it's power usage.Never needed it, but it's nice to have the ability to power cycle remotely.Ask your host for a vlan for your miners and pdu. Restrict it's incoming connections to your home IP only - I would not put either my miners or my pdu up against the open internet.

### Reply 11:
Thanks for the advice, will do. Do you have the model number of that PDU by any chance?

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  },
  {
    ""hardware_name"": ""wifi power outlet"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""switch mode PDU"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""sentinel pdu"",
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]"
16206,"Date: 2022-02
Topic: want to compare the following mining
### Original post:
want to compare the following mining : ( To decide which of them is better than other to purchase it ) not only hash rate and profits also damages, Jam, obstructs all T9+ Miner, 10.5THconsume 1200 <truncated> miner, 16.5THconsume 1450 <truncated> Avalon Miner, 20THconsume 1800 <truncated> 10.3 Miner, 24TH consume 2400 <truncated> Miner, 24TH consume 2200 <truncated> T1 Miner, 32THconsume 3000 <truncated> Miner, 49THconsume 5500 W_____Aladdin T1 34THsUsedconsume 3000 W____BITFURY B8. 55THsNEWconsume 6000 W

### Reply 1:
Which Avalon miner? There are several different ones but at 20TH I'm guessing the A921? While it is a solid miner (all of Canaan's miners are very well built) it is not very efficient, power used is more like 2.0-2.2kW depending on air temperature. I would go with any of their A10xx, A11xx or A12xx series. I must add that while all of Canaan's miners are fairly easily serviceable and have good built-in diagnostics, getting replacement modules for non-current miners is rather hard to do as Canaan did not make make very many of the modules for use as spares.Forget about Ebit, Axin, Aladdin and the Lovecore A1. They all have high failure rates along with terrible to non-existent support.

### Reply 2:
Alladin, Aixin, and a1 miner don't have official support and I'm sure it will only give you a headache. If you want a better ASIC miner then go for Avalon I only heard few people experienced some issues about this miner compared to other miners you mention above.

### Reply 3:
What about : BITFURY B8. 55THsNEWconsume 6000 W??

### Reply 4:
You better have free power and it better be a VERY inexpensive price for the miner... That is horrible efficiency even compared to the Avalon 921. Beyond that, there has been very little mention of Bitfury gear here, mainly because most of their production of miners is for use in their own farms with very few sold to outsiders (consumers).

### Reply 5:
What about : BITFURY B8. 55THsNEWconsume 6000 W??

### Reply 6:
Answered already in post #5...

### Reply 7:
Thank you I understand that you advise me to go to bitmain miner T9, S9,Or T2T . Are that right ?

### Reply 8:
The high failure rate isn't something confirmed by any scale, these gears are just a rebrand of other miners (mostly INNO), so their failure rate is within the range of the original piece of gear, but that's great advice nonetheless, those gears shouldn't be bought.OP, it seems like you have free power and you are looking for the cheapest gear possible, I know this is outside of the scope of your question but do you know what it takes to run a single unit that consumes 6000w? do you have any background about electricity, wiring, MCBs, fuses, amps, volt, and all that? The reason why I ask is that where I live power is either free or almost free, so most newcomers take your route, I was contacted by so many folks who bought BITFURY gears and most of them had troubles with electricity, this beast sucks a ton of power, despite the fact that it takes 2*C19 power cords to run it - the infrastructure needed to run such gears isn't available at home, so most people end up selling it for a lot cheaper to those who have the infrastructure needed.With that being said, according to one person who I trust and know he has been mining for years, he said those gears are very robust, but the power <rest of post truncated>

### Reply 9:
My question would be why you are going to old/2nd hand gear?It may be becoz you can get it quickly, but the performance sux compared to new gear.Most of your list is around the 10TH / 1kW range which is the same as miners many years ago.Even an S9 falls in that arena (and better than that) and some people think S9s don't exist any more or are not worth running any more.Current miners are around 90-100TH / 3300W so up to 3 times better in H/JouleDiff is on the rise again and may well catch up to the previous peak in the not too distant future.Consider that also when considering buying now, old slow poor performance miners.

### Reply 10:
Thank you

### Reply 11:
Thank You

### Reply 12:
Hello, I can tell you about the miners that I use. I have 10 Aladdinminer T1 32Th.They are good for me, but they consume a lot, thank goodness I have free energy.

### Reply 13:
Do you happen to have firmware? If you have USB UART then you can copy the firmware

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    ""hardware_name"": ""Avalon Miner"",
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  {
    ""hardware_name"": ""Ebit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Axin"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Aladdin"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Lovecore A1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BITFURY B8"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain miner T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T2T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Aladdinminer T1 32Th"",
    ""hardware_is_owned"": true
  }
]"
13571,"Date: 2018-01
Topic: Automate Your miners setup for ur farm | Beta
### Original post:
This is something I am sure people will find value in.I do have a few small suggestions. Using a combination of Ansible and sed, you can make this more efficient and batch program many miners at once. You can use sed to replace individual lines rather than deleting, creating, and then modifying a new file. With ansible, you can batch them and auto generate worker names and batch program multiple miners at once and restart all the services in one shot.

### Reply 1:
thanks alot! for ur comment i was looking for a good compliment ^.^i did decide to backup the file and deleting it than creating it from scratch to avoid any miss writing into the file.its safer this way.about doing that multiple miners at ones im not yet sure how to do so. the reason for this script is to be organized .what i mean by that is if u have 10 20 30 miners on shelf u want to know where is each miner .me myself i wouldn't plug them all at ones and try to discover which miner is which and configuring them all at ones.my thought is more like this, if u want to plug them all at ones, bitmain as a tool which called IP reporter. <link> u can do is press the button on the miner for 5 second (open their program before), and then u will get the miner ip , so u know which one to ssh tolets sayu press on shelf 2 miner 6, u will get a dhcp ip lets say 10.0.0.51 , u just ssh to 10.0.0.51 and move over the script and run it sh script.sh 6 6 6 6 6 so the miner will be on ip 10.0.0.6i guess u understand that already when reading the first post.

### Reply 2:
An alternate way to get around the location issue would be to power the miners up 1 by 1 so they grab sequential DHCP IPs before staticing. Theres always multiple ways to do things and in the end most of them work. Good job on the script!

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    ""hardware_name"": ""Bitmain"",
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]"
23684,"Date: 2021-09
Topic: 120v to 220v
### Original post:
My apartment only has 120v 20 amps circuits. Is it possible to convert them to 220v? It is an unit within a 20 story building.

### Reply 1:
Well, firstly, remember that's (20x120) 2400W maximum (and not a good idea to run anything at the limit all day long)Also check what cables are rated in your area e.g. in america they are typically only 15A and will get hot running them even at 15A all day.Of course, if you change it to 220V the lead current drops to almost half.Lastly, current bitcoin miners are well above 2400W, so you'll need to buy previous gen or older 2nd hand miners.

### Reply 2:
I think you can run a miner at 120v but you couldn't run all of your hashboard only 1 or 2 hashboard that I know success mining on 120v. So you would need a step-up transformer to mine at 240v but I don't know if you could run at 24/7 I believe the lifespan of the step-up transformer is very short compared to installing a 220v in your house you can hire a professional electrician if you want a 220v in your house it would be a better option than using a step-up transformer.

### Reply 3:
You need a tester, check in your panel if you have more than one phase/hot coming in, if you do, measure AC voltage using the two hots.120v is always less efficient (more wire resistance). And you generally don't want to be running more than 8A for example with the APW3++ (rated 10A) meaning 960W.And yes, those PSUs were made in China for China voltage (230v) barely tested with ""foreign wasteful voltages""), so if they say 10A is max @ 230V, don't expect halving the voltage would make the inside wiring magically support twice the amps. The PSU sticker usually tells you but some psus can't even accept that low range.Now if you get 240v from two hots or two phases (208v) then that is good.

### Reply 4:
Maybe an S9 with two boards or 3 boards underclocked to below 1000w using APW7 PSU, but most if not all of the miners that came after that require 220v-240v and won't operate at 120v even without any hash boards installed.A transformer is ""supposedly"" built to run 24/7, but you are right, most of these commercial transformers are shit, and a solid transformer will probably cost a ton, but that still might be cheaper than installing 220v, he just needs to check both options and see what works best.

### Reply 5:
If you believe Bitmain's own documentation, APW7 is even lower rated for 120V (Max 7A vs Max 10A for the APW3++). Perhaps it was never designed to work at the lower voltage range in the first place, but later they figured it could actually work a little with the same thin wires?1365W+10% = 1502 which at 120V is 13A or 9A with two hashboards (See specs for the S9j 14.5).In short, no, especially with the higher rated models.You are welcome to do your own experiments, but using factory firmware with low voltage is risky as it doesn't limit power. In China they don't use this low voltage so its not an issue there. It is especially bad in Japan which has the world's lowest voltage (100V).

","[
  {
    ""hardware_name"": ""current bitcoin miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""previous gen or older 2nd hand miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""step-up transformer"",
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  },
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    ""hardware_name"": ""APW3++"",
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  },
  {
    ""hardware_name"": ""PSUs"",
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  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW7 PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9j 14.5"",
    ""hardware_is_owned"": false
  }
]"
16404,"Date: 2023-01
Topic: Legacy S9 Miners/Farm (Wanted)
### Original post:
Hey, Anyone here owns or knows of anyone with >1,000qty of Antminer S9 miners and want to offload them? It could be just the miners/psu or the whole lot including hosting/farm. I'm looking to get these miners for some testing. Am willing to buy up to 10,000 pcs. If you know of someone who know someone etc, do let me know. I'll be keen to offload these miners that are currently not profitable instead of collecting dust somewhere. Thanks!

### Reply 1:
Meta-luban can source over 10k+ S9's for you from China for around $50 each.

### Reply 2:
Hi, are you still looking for miners?

### Reply 3:
Yes still looking for miners. Do PM me or discuss here on details as needed.

### Reply 4:
Are there more informations about the kind of testing you want to do? (just curious)In any case there is a very large supply of these miners and they could even come in handy in the future, since people already start to recycle the old chips for small home miners.

### Reply 5:
Hi there, I'm have sent you a PM.

### Reply 6:
Have you tried contacting Zeusbtc if you are going to buy check this <link> currently, it's a holiday(Chinese new year) so maybe you can get a response delayed. Another option try to contact offordscott or try to contact him on Telegram here <link>

","[
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23452,"Date: 2021-02
Topic: how i fix  control board Aladdin t1 miner 32th ?
### Original post:
hello all need some help plz if some one solved thies problem. Aladdin miner T1 32th problem of cutting the Lan card in the control board like a photo.<link>

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22430,"Date: 2018-03
Topic: Best wiring management hacks or advice ?
### Original post:
Posted a pic on facebook of some miners and the a dude commented that it was a fire waiting to happen.Does anyone have some good advice or hacks to manage all the wiring ? LAN cables are especially messy.

### Reply 1:
Cable ties I suppose.Not sure how your current setup looks like.

### Reply 2:
Post that pic here

### Reply 3:
Cable ties are aptly named...

### Reply 4:
Good planning of the space will usually help. The rest is accomplished by cable ties or use some electrical tape/velcro it's easier to remove if you need to make adjustments

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    ""hardware_name"": ""cable ties"",
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    ""hardware_name"": ""electrical tape"",
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23006,"Date: 2019-07
Topic: APW 3+ fan replacement
### Original post:
Hello All;The fan died in one of my APW 3+ power supply's. I bought a new fan on Amazon and it was delivered today. The old fan was 2 wires (one black and one red). The new fan (same model number) had 3 wires (1-red, 1-black, and 1-yellow). Thinking the yellow wire was just an auxiliary ground I connected the black and red wires and left the yellow hanging. Powered up the power supply with the S9 connected and nothing. Fan on the power supply not turning, and of course the S9 not working. Both the S9 and the power supply fan were working prior to taking it off-line. The old fan was about to explode so I shut it down until I could get a new fan.Does anyone have any experience with this? If the fan power supply is not working will that keep the miner from mining? There is 220 going to the power supply, but not sure how to test the power going to the S9. Did I buy (or did they send me) the wrong power supply fan ? Any help would be greatly <truncated>

### Reply 1:
Go to imgur and post around three or four photos put them on imgur.Post the links here I will get them to show.

### Reply 2:
Take a look at position of the wires, most likely the third wire is only to report rpm, but the colors might be wrong... Assuming you bought the same voltage.Unless the miner is damaged, you could plug only the controller to see if its delivering power (or use a tester). Under a low load (just controller) it should work. Under normal load (with hash boards) without fan it would overheat.

### Reply 3:
Yes on the yellow wire. I contacted the seller and they said the yellow wire was for testing RPM. Any idea how many volts I should see coming out of just the APW 3+ without the miner connected? Unless I'm testing it wrong, I have no voltage across any terminals. This is weird because the APW was working when I shut it off. I changed the fan (pretty simple to replace) and now nothing seems to work.

### Reply 4:
According to Bitmain (link below) you should getthe link also includes a guide on how to test your PSU without having to connect the miner.you can search youtube on how to change the PSU fan, also you should post a link for the fan you bought, it could be the wrong fan after all.

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24144,"Date: 2023-07
Topic: Chip running hot on Avalon 1166 Pro 81TH
### Original post:
Hello,I just had a few questions regarding the Max chip temperature for the Avalon 1166 Pro 81TH. In the manual it mentions to keep TMax below 85 degrees. However the first chip on my miner seems to be running hot with a TMax temp of 89, the other 2 chips are perfectly fine (below 83).What could be the reasons for this? will this damage my miner even if average temps are good? Also, the Hardware Errors seem a bit high as well, or are all these numbers withing a normal range?Here is part of the log for <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':90,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> getwork':0} <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1674088.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[53130] <truncated> LW[53009345] MH[1035 1649 707] HW[3391] DH[1.497%] Temp[23] TMax[89] TAvg[74] Fan1[2413] Fan2[2416] Fan3[2424] Fan4[2416] FanR[36%] Vo[344] PS[0 1218 1376 236 3247 1376 3510] PLL0[485 672 1994 12209] PLL1[948 1083 3058<rest of post truncated>

### Reply 1:
Those values from your chip temp are overtemperature it can kill ASIC chips.It seems there is an issue with your fan speed its running very slow lookCode: Fan1[2413] Fan2[2416] Fan3[2424] Fan4[2416] FanR[36%]It should be around 6000 RPM and FanR should be higher than 75% but mostly it's running around 90%I don't know if you can manually set the fan speed to higher but I couldn't find it under their manual documentation. Would you mind it to try replugging all fans and maybe it can fix this issue?

### Reply 2:
Maybe ask Canaan about it?It could also be a software bug, which is maybe fixed in a newer version <truncated> with the Avalon 10-11-12 series there is no ""More Options""-field like there was with previous generations, so you can't force your own cgminer attributes, for example for manual fan speed.

### Reply 3:
Interesting,I will see what I can do / unplug and re-plug the fans.Also, I am blowing cold winter air from outside, is it possible that the miner thinks it's cool enough and not making the fans run faster? The ambient Temp shows up as 23 and the room temp is around 17 degrees Celsius.Firmware is up to date I believe.Thank you for the replies

### Reply 4:
But the API log itself shows high temp So the only problem is there is something issue in your fan or like the above said maybe the firmware itself. Even it's up to date it's still recommended to flash it again to make sure to fix all possible firmware corruption or to refresh your miner.You can download the firmware of this unit here <link>

### Reply 5:
So I found out through Canaan support, that you can adjust the Avalon fans manually in the FMS software under diagnostics, using this command: <truncated> I put the fans at 50% running at 4000 RPM and it made a huge difference with the temperatures.The voltage is now at 349 though, is that too high? or is the miner safe to just let it run like this?This is what the log is showing <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':91,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1652648.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[50231] <truncated> LW[50146504] MH[1219 1826 679] HW[3724] DH[1.628%] Temp[26] TMax[77] TAvg[66] Fan1[3934] Fan2[3929] Fan3[3956] Fan4[3942] FanR[49%] Vo[349] PS[0 1220 1396 235 3280 1396 3555] PLL0[679 942 2580 11159] PLL1[1102 1219 2951 10088] PLL2[584 596 2742 11438] GHSspd[81984.82] DHspd[1.628%] GHSmm[83854.32] GHSavg[78705.67] WU[1099505.44] Freq[454.94] Led[0] MGH<rest of post truncated>

### Reply 6:
Well your temps are all good. your voltage went from 344 to 349 since I do not know what the number means ( it does not mean 349 volts ) I can only say it is 1.5% higher than the older 344 number. Your temps are really much better. can you read the watts for the whole unit?

### Reply 7:
No those numbers are not volts but it counts in mV or Millivolts if you have a multitester you can read most of the chips even on Bitmains machines it's around Millivolts of each chip.So it should be 349mV or 0.349VThat's good that you can manually set the fan speed but never heard that you can manually set the fan speed through the FMS tool. Anyway, about the numbers under that voltage, it's a normal number because you are running the miner at workmode[1] or high-performance mode if you set it to normal mode those voltages will drop too.

### Reply 8:
Great, I will continue to run it like this then<rest of thread truncated>
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23104,"Date: 2019-10
Topic: Where is everyone getting their wall meters?
### Original post:
I couldn't find anything that was going to work as a plug and play option. So eventually I got fed up and made my own. It's not pretty but it does the job. 220/240V North America power meter - DIY Under 60$ CAD

### Reply 1:
Thank you. I now know I'm not crazy for not finding one. Followup questions: Am I a dummy for using the above listed wall plug? I'm in the USA. Is there are better way of doing this where I can have access to tools the rest of the world seemingly has at their fingertips?In the mean time, I will be reading your thread.

### Reply 2:
Also not plug and play, but this is what I use.<link>

### Reply 3:
In short no. Most other countries I believe run 220/240 at the residential level, as opposed to bringing it down to 110/120. With fewer plug differences so that's why you find the Kill-a-watt style devices so readily available. What I did to allow for growth and density, was go with 30 amp 240V circuits to a PDU then to my miners. If you want to spend a lot of extra coin you can buy some pretty fancy PDU's but they're not necessary. That's very similar to what my first couple miners ran off, so there's nothing wrong with the circuit as is, for most miners. You can always upgrade down the road.Here's another that can be helpful when starting out. First time/Small miner reference for getting started.

### Reply 4:
I have this type of plug for 240v, <link> and I have not found a meter to I can plug into the wall showing what my miners are actually pulling. I have to go back to the breaker box and clamp around (not something I am found of doing).Any <truncated> thanks in advance.

### Reply 5:
Most of the world runs 230v @50hz, most importantly, China. And for the most part (except places like China or the UK) they use the Europlug or one of the variants. They all share the two poles, its just ground they just couldn't decide together how to do it, lol. Another chunk of the world uses what America used 50 years ago, or the same they use now, depending on country. Japan uses 100v. Lets not talk about Japan :3You can probably find meters easily for European use, and then you would need to use adapters. The adapters themselves might be too weak if not chosen carefully, or you could make your own buying plugs and cables.

### Reply 6:
Thank you. I have 240V 30A breakers. 10/2 WG wire to a solo 20 amp plug for each miner (This is the actual plug I use.)I have thought about wiring my receptacles with foreign receptacles and purchasing new cables just to get the meters. I'm still not swayed to do that and will continue to clamp around.

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16307,"Date: 2022-08
Topic: What's the model of your first Avalon miner?
### Original post:
Last year, we launched A1246 Series. From the name, this is the 12 generation miner of Avalon. What's the model of your first Avalon miner? Canaan Official Online Storeshop.canaan.io

### Reply 1:
It was an A721 bought about 2 months after they were introduced.That was quickly followed by 2x 741's then 2x 821's and 12x 841's as they were introduced. Then 921's, 1041's, 1047's and now one of the A1246 93TH ones.

### Reply 2:
Wow,many thanks for your strong support on our Avalon miner. Are you mining in your home or host them on hosting mining farm?But at current prices of bitcoin, the models before A10 Series should have been shut down, right?Canaan Official Online Store: shop.canaan.io

### Reply 3:
I haven't had the chance to operate one yet, due to home mining limitations.Would really appreciate something with the efficiency of your 12th gen miners, but in a smaller 'package'.For instance, instead of $3,333 for 96TH and 3420W, something for $1600, pushing 48TH at 1710W would be a lot more accessible.Or maybe even $800, 24TH/s, 850W. This would directly compete with Apollo BTC in terms of price, but manage roughly 8x higher hashrate at just 3x the power cost.I do think that there's a market for sub-2kW and especially sub-1kW miners. Easier to cool at reasonable temperatures, less issues with existing power system and lower costs when mining at a loss.

### Reply 4:
Avalon 841, got like 40 of them, they suck to be honest, they are far from stable according to my own experience when i compare them to other gears, however, to be completely fair i got them used not brand new.With that said, and seeing people complain about the newer models of Avalons, i will probably not buy any of them in the near future.

### Reply 5:
my 1246 worksmy 1166 worksmy 1066s work1 of 3 1046s workmy 921 burntmy 851s suckedMy 841s were good.My 721 is still miningI think My 621 was best very quiet when down clocked.Avalon is pretty good gear but struggles with very high room temp.I have been running avalon for a long time.

### Reply 6:
I have 1066, but currently, it's not working. If possible, I hope Avalon can give some related maintenance manuals, there are too few maintenances related to Avalon on the market. I want to buy a 1246 miner, but don't have any schematic at the moment, and once it stops working, how to repair it?

### Reply 7:
Oh, I am so sorry to hear that. If you have any problems, pls feel free to contact <truncated> or <truncated> try to get more support. If you want to buy A1246, pls visit our official online store: shop.canaan.io, we are on sale now and we also have stock in USA warehouse. I really hope you can enjoy mining from Avalon miner. If you need some help, pls DM me at any time.

### Reply 8:
WOOOW, pls allow me on behalf of Canaan to thanks for your strong support for us. I noticed a detailed that is the time you registered was 2012, that was nearly our first generation miner launched! If one day we award a prize of the longest user, you will get it surely.Thanks you again. Hope you have a great mining life.

### Reply 9:
Thank you very much for your constructive advice. Even though I am not from R&D team, but I will give them feedback of your opinion, thank you.

### Reply 10:
So sorry to hear that. To be honest, A8 and A9 Series has good reputation for steady performance on a large scale. But we can't guarantee the used miner has the same performance as the brand new directly from our factory. If you bought the new one, you can get the afterservice from us in 360 days.Hope you may choose Avalonminer in future.

### Reply 11:
I went back and looked at my notes I had an a421 that was my first one not the A621.I know you are opening a new usa store. I will be looking to get some A1246 units when it opens.Please note I am philipma1957's alt as I finally started a corporation this year.

### Reply 12:
Hi Philipma, welcome back. Glad to hear you started a corporation this year, I think the company name is your ID name,right?I also launched a new affiliate program, Canaan Partner Program, if you are interested in it, pls send me email to stella@canaan.io, I would like to introduce more details to you and hope to help you on your business.

### Reply 13:
Does anyone own a A 1126 Pro-S model? How do they perform? They seem to be alot cheaper then other models with similar hashrate so im wondering why is that?

### Reply 14:
The PE is a little bit higher than others. If you have great power resource, it should be a good price. welcome to visit us shop.canaan.io or send email to me stella@canaan.io.

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    ""hardware_name"": ""421"",
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11231,"Date: 2022-11
Topic: mining calculation
### Original post:
How to calculate how much money a mining machine can earn per day?Can you recommend me some mining computing websites?

### Reply 1:
Try whattomine or nicehash, or just google it for more. It is easy to find them, just search with ""mining calculator"". Spend some time on the mining board and look around, there are also tons of threads talking about them. Just need a little bit of your time to scroll and read.

### Reply 2:
Almost all online calculators are somehow accurate, viabtc has a nice little tool <link> which I prefer to use, the good thing about it is the fact that you can change all variables such as fees, difficulty, and price (most online calculators don't let you do that).It's important to be able to change those variables, as I type, the difficulty is adjusting in about 14 hours, with at least 13% to the upside, the current difficulty on all those online calculators is 31360548173144 but in 14 hours it will be 35645328467032 which is roughly 13% less profit.

### Reply 3:
Well, there are actually quite a lot of mining calculators, you just need to choose the one that you find convenient and informative, for example, here are a few of them, just choose what you are going to do with mining:<link>

### Reply 4:
Is there a mining calculator for efficiency ghs-watts = joules and sols to watts = joules ?I have been building a database for antminer z9 and Canaan A851's trying to tune and find most energy efficient settings but have been questioning myself on wether my math is correct.

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23186,"Date: 2020-01
Topic: ebit e10.3 voltage alarm
### Original post:
dear hi anybodyI have 15 ebit ebang 10.3 that not work fine and some of them hash rate decrease to zero and when check with ebit software found that VOLTAGE ALARM become red and show these codes. 0011 or11001101I thing these codes refer to hash board i mean board number 1 and 2 have voltage problem.Is anyone can guide me about these problem and how can solve them. By the way they are not up to date and software version is 10.0.1.2 . I found now new version in ebit website 10.0.1.9thanks so much for your attentions.

### Reply 1:
voltagleak is usually means u need to check ur power supply try to change psu or change use another free cabel on ur psu i have ebit e10.3 and when i change the psu cabel i mean by changing my psu have 10 wire set so usually 2 or 3 are free itry to change them wth free ones.

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23151,"Date: 2019-12
Topic: New S9i whats going on here (blinking light on PSU)
### Original post:
<link> PSU on 110v. The guy at parallel miner said this can put out 1500w on 110.

### Reply 1:
Looks like a power overload to me. You sure you have them hooked up right to the S9i? e.g. only one power supply per hash board?

### Reply 2:
That has a grounding setup that allows both psus to be as one.Ie you should be able to use any cable on any board.My guess is a defect in the pcie cables.Every once in a while parallel miner sends out a bad cable with crossed wires.At op look at every pcie cable to see if they done correctly. I have a thread with clear photos of this issue I will go to a real pc and find the thread for you.Found the thread check it I bumped it just for you.

### Reply 3:
I checked the cable and it's good. The peeps over at parallel miner said this PSU should be OK. I was going to get the 2400w version, but didn't. I think I can get 1800w on 110 with it. Could this just be a power issue? I did remember one of the boards in the miner getting pretty hot, around 90.2400W version (I am on 110) <link>

### Reply 4:
I tried running the S9i on two hash boards only and it's starts up. However after about 3 minutes the red fault light comes on, the fans ramp down, and then after a minute it starts this cycle again.I am going to get a PSU for 220, but do you think it is a power issue or maybe the miner?

### Reply 5:
get a multimeter and test the voltage coming out of your wall socket, look for drops or spikes

### Reply 6:
The S9i runs fine on one hash board, I tested both PSU's. When I power two, this time instead of getting the red fault light and fans slow down. I get one of the PSU breakout boards blinking, i.e., the digital voltage readout blinks, also the PSU green LED blinks.

### Reply 7:
Are those breakout boards linked together? Not sure about parallels break out boards but other setups that are similar to this such as a 750w + 1200w psu can be used to power an S9. No need to link the breakout boards. I use the 750w for the control board and one hashboard and the 1200w for the other 2 hashboards. This sounds weird but the correct way to fire it up is to turn the 750w on first and then quickly following turn the 1200w on next. Either way If both these psu's are 750w and you are running on 110v I would say thats not enough, your stressing the psus to much. They might be able to do it on 200+volt but even then I would recommended (2) 800watts or like I said a 750 and 1200. Hopefully you get it sorted out and no damage to the machine occurs.

### Reply 8:
The BOB's were linked together (only 2 boards powered) and it went into a red fault. Then I tried only powering 2 hash boards with the bob's not linked and I got a dimmed digital readout on the 1 bob and then the one psu failed. Just curious, if you have 2 psu's powering 3 boards, and the PSU failed that is connected to the control board, what will happen to the S9, any damage?

### Reply 9:
assuming the psu fail is a cap or a mosfett and not a short you should be fine.

### Reply 10:
Thanks, but now I confirmed it was the break-out-board that was bad. I just ordered the following PSU which should be better...<link>

### Reply 11:
I know this is an old thread but just wanted to add that I've also come across blinking PSUs before and in my case it was due to improper data wiring. I accidentally connected two miners directly. Once I separated them the PSUs worked properly. Just wanted to let people know so that they can look into this as it's a pretty easy troubleshooting process and fix (if this is your actual problem).

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  },
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    ""hardware_name"": ""multimeter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""breakout boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""750w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1200w PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BOB"",
    ""hardware_is_owned"": true
  }
]"
16501,"Date: 2023-05
Topic: A Data Driven Overview of BraiinsOS Efficiency Improvements on my Antminer Farm
### Original post:
Video I made talking over data results of running BraiinsOS on a 5 Megawatt Facility<link>

","[
  {
    ""hardware_name"": ""BraiinsOS"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer"",
    ""hardware_is_owned"": true
  }
]"
16348,"Date: 2022-10
Topic: Recycle uses of the heat from mining equipment.
### Original post:
Recognizing that the heat generated from mining equipment can become a intolerable, a discouragement and a challenge, it is in every miners benefit to find more beneficial uses for the heat energy from their equipment, rather than considering them totally as a waste. A forum member already has stated one use of the heat which can be recycled to heating homes, which can be beneficial for people in very cold places like Canada where their home require heating to also cut cost, some other applications where the harnessed heat from mining machine can be used are;(a)For heating water and food possibly.(b)for drying laundry and food that needs drying.Which other possible domestic use can you think of?

### Reply 1:
I think if you have a garden and you love plants and lovers then you can also use the heat from ASIC miner to heat the room to keep the room of your garden warmer. we know cold places like Canada the plants can not survive in cold places so having an ASIC miner can help heat the garden and it can also cut your Electricity than having a normal heater which consumed the same as a miner.And I saw more from this link below that you can recycle the heat and use it for other things like wood drying and also for water heating.- 5 ingenious ways Bitcoin miners are recycling heat from ASICs

### Reply 2:
We were going to use S19's to heat our greenhouses as we have super cheap power. But when we go to it the price of ASIC's tripled and not longer worked for us.I'm excited about the new water cooled rigs, that can really make the heat energy useful.Floor / baseboard heating, water heater, pool heater ground heating in greenhouses

### Reply 3:
The issue with greenhouses is they tend to be humid, which is not good for miners. And during the hot summer months you need to get more heat and humidity out of the space.Over the years there have been a lot of people with a lot of plans to do something with the waste heat. Using liquid cooling is fine, but do you want to have heated flooring during the summer? If not you have to have a 2nd water path to move the heat someplace else.Also, it adds complication. I have an air cooled miner I can put it anyplace where I can move enough air to keep it cool no though given to plumbing....-Dave

### Reply 4:
This is the main problem with the heat, you need to get it out of the miner but at the same time you must be careful what air you get in also, so you will definitely need two circuits here, and then you have the distance if your greenhouse is like 50 meters from the room where you have the miners you need a lot of fans to push it, maybe dig a trench for the tubes so you don't lose that much heat but at the same time, you have to watch out if air goes above 30C not to ruin your plants, so another exhaust.A lot of pain in the ass if you're working on small-scale stuff, might be really enjoyable as a hobby if you like this stuff but probably at one point you will get bored playing around all day with settings and temps and fan speeds depending on how sunny is outside.

### Reply 5:
Our green houses are fully automated. Exhaust fans, intake fans, heat, humidity, CO2 generators, lights, water and nutrition. I was going to use the output of the dehumidifiers to drive the ASICs as it's filtered as well.

### Reply 6:
Yes, definitely take care that in the summer to dispose of heat, for example, having a small cooling tower or using such or such a fan heater installed outside the room to cool the immersion fluid, I think all this can be implemented.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""water cooled rigs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""air cooled miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Exhaust fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""intake fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CO2 generators"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""lights"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""water and nutrition systems"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""dehumidifiers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cooling tower"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fan heater"",
    ""hardware_is_owned"": false
  }
]"
23815,"Date: 2021-12
Topic: Miner-Va ASIC Miner default password.
### Original post:
I got a Minerva M7 miner, <link> is my first foray into crypto mining. It seems that I need an admin password to get into the miner which I don't have. Anyone have any ideas? I have tried most of the typical ones without success.

### Reply 1:
Why not try to contact the support? <truncated> website doesn't have so much page and I don't see where you can find the admin password. Or try this admin admin or admin root

### Reply 2:
Yeah I have a couple emails in to them with no response yet. I tried those one already. Thanks.

### Reply 3:
Have you tried some of these basic ones, like <truncated> never got my hands on one of those, so I have no idea about the miner.

","[
  {
    ""hardware_name"": ""Minerva M7 miner"",
    ""hardware_is_owned"": true
  }
]"
22819,"Date: 2018-11
Topic: Antminer S9 - Firmware update in batch mode.
### Original post:
Hi I have been searching all over for any info about updating firmware on S9 through SSH but haven't found any info about that topic. Is there no solution to update the firmware without going through the web control page on the miner?Thanks in advance,HB

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
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]"
22439,"Date: 2018-03
Topic: One X at the end of asics status
### Original post:
Good morning.The other day I had to turn off the machines. When I plugged them in today I find that one comes out the following:oooooooo oooooooo oooooo oooooooo oooooooo oooooooo oooooooxThe hash has dropped but very little.Is it possible that a single chip has been damaged?I do not care that it stays that way because you can barely notice the descent, but I'm afraid that I can go for more.Thanks greetings.

### Reply 1:
Yes it usually means something is starting to fail. Over time more will go bad on that board unfortunately.

### Reply 2:
Thanks.I try to find a hashboard asics 54 V 1.5 but is imposible.My s7 only works with two now.If any one have one to sell please contact with me. Thanks

","[
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  },
  {
    ""hardware_name"": ""chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard asics 54 V 1.5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s7"",
    ""hardware_is_owned"": true
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]"
23146,"Date: 2019-12
Topic: connect to miners over outside network ...
### Original post:
Hi , You need a fix ip network out. And you just only redirect the port :80 = webinterface22 = sshIn final you acces on your antminer is your external ip + port redirect , exemple : 50.150.200.210:XXXX (XXXX = your choice port)Its easy

### Reply 1:
Highly suggest not to open ports to your miners to the outside world unless you want your miners to stop mining for you and mine for someone who has hacked them.Setup a VPN and on your router and then VPN into your network and administer the miners that way.If you don't know how to do this, then find someone who you trust who does.

### Reply 2:
+1 , of corse, i miss to say, change password for HIGHEST dificulty !!!

### Reply 3:
Nonsense.Ssh to router, from router, ssh to miner. Done. Easy peasy, and secure. No redirections, and no exposing gear to the outside, which you should NEVER do.If you want the WEB interface of the miner, you have various choices, you can tunnel, proxy, vnc, vpn...

### Reply 4:
Hi anybody.I have a small farm in somewhere far from my home. and want to monitor them and also connect to miners if I need and restart or re-config them as I need from my home over internet.What is your idea about this situation. And also is anybody now bout the ports numbers that miners work with them?some of my miners are for ebit and antminer company.Thanks so much

### Reply 5:
if your router support vpn client - then setup VPN connection to your router and manage your devices from Home.if your router doesn support VPN, then buy raspberry Pi and install on your farm in the same network where your asics. Then install and configure openvpn on raspberry Pi and use it for accessing your devices from home.

### Reply 6:
With all due respect to the comments from ""paranoid"" users like myself , the fact that you are asking this question indicates that you don't have what it takes to do any of this, an easy option would be buying a cheap PC , place it in your farm, install Linux OS on it , download TeamViewer on it and access the miners through TeamViewer , yes there are more secure options , shorter paths, but if you want a mixture between easy and secure then this is a perfect combination.The solution above also cancels the need for a public static IP , which in many countries cost a fortune, most of the comments above require you to have a static IP, using TeamViewer you don't need a static IP and can just use whatever connection you got.

### Reply 7:
thanks so much for your help.I think have to bye a PC and use team viewer.because my public IP is different from my wan IP. that I could not connect to is from outside by port forwarding.more over you can use their software with team viewer.best regards

","[
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  },
  {
    ""hardware_name"": ""router"",
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  {
    ""hardware_name"": ""raspberry Pi"",
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    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""asic"",
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10879,"Date: 2020-04
Topic: WANRNING! Do Not Buy Antminer S9k
### Original post:
I have to ask.Have you ordered them recently? If they are still in warranty go back to Bitmain, start the ticket for the whole order and put them to pay to have them back and serviced at their expense...Also, go on their Facebook and Twitter, even LinkedIn if they have if they do not help out as this is inadmissible.No one should get used gear, let me correct that. If you get used gear it has to be within certain standards.I haven't dealt with used gear as much as other members in this community, but I have never, yet, seen a falling radiator... Again, really sorry to hear this has happened to you and hope you get through it

### Reply 1:
Yes it sucks but can you mix and match boards to get a fully working units?If you do that and then scrap the rest of the hash boards and sell the controllers you might be able to recoup a bit of your loss.All the while screaming at Bitmain for some sort of a credit.-Dave

### Reply 2:
The s9 series are coming to an end for most people, yet they still hold some value to those with free or cheap electricity.I had a few spots to fill in a small farm where voltage is not regulated and S9s were the only option, I wanted ""brand new"" miners so S9k was the only option among the S9 family.I went ahead and ordered the S9ks from bitmain after trying 2 of them for a while and they worked just fine for a while, the new batch was very terrible and the rest of the story is even worse.almost half of them lost a board after running for a few days, the once that didn't lose a board did not perform any better, many issues started to show up, they hang, stop hashing, keep rebooting or not reflecting the actual hashrate on the pool side (20-30% less).It does not end here, these miners are so bad that some of them came like this. I am so mad I want to write more to express my anger, but I will just stop here Please note.1- There are other S9s running in the same place (S9,S9i,S9j) they all are working great.2- Internet connection is very stable and there is more than enough bandwidth .3-The place is cool, air ventilation is good.4-I tried all possible firmware on them, the newest one<rest of post truncated>

### Reply 3:
To be clear these are not the Sept 2019 batch.These are newly ordered.If so they are terrible.My 4 ordered for sept 2019 were new.You got used gear.Every once in a while they do this.

### Reply 4:
one of the issues is the cost of shipping it back. it is dirt cheap item so shipping price kills him to ship it back.They are 97 dollar units. if he spends 50 to ship it back he has to pay. so now the unit is 147 not 97.

### Reply 5:
I can't say these are used, maybe refurbishment or haven't passed their quality control, I hate Bitmain for doing this but I have to be honest in my complain/review.The gears seem and smell brand new, despite that some have different heat sinks colors I doubt these are used, at lease the once i tempered with attempting to fix them.Yes.I don't have to go that far, a single email is more than enough to get them to ""admit their mistake"" and ask me to ship the gears back to them, which is not an option as i have explained in the OP.There is nothing wrong with buying used gears if they are labeled as ""used"", selling brand new miners and sending used once is another story, but as I have explained, I can't confirm that gears are used, they might be, but if that is the case then Bitmain did an amazing job making them look like brand new.It's nothing too serious, I think I had worse stuff happen to me before, I am glad they weren't S17+ or anything like that.I now have a good amount of PSUs sitting there doing nothing, so next step would be sourcing S9s without PSUs and/or sell them along with the control boards, they don't worth much, but still better than nothing.I remember having a simil<rest of post truncated>

### Reply 6:
How do you get bitmain to pay for shipping? I've had a 20% failure rate with a shipment after 1 month in a climate controlled facility... Shipping was 700$ and our electrician didnt blink at the price to ship them back (WTF).

### Reply 7:
On a case by case basis.For example, personally, I would chase them on common issues for miners in the exact circumstances I have encountered and allow them to answer on the lines of 'in this environment, the equipment should behave optimally'. Now, if the answer would be received would take it from there and find possible reasons (again coming from them) as to why the miners are not working. In a utopian society, would shift the blame and obtain an exception to the case on delivery charges on warranty returns, conditioned on the issues being solely theirs and not mine. This would ofc be conditioned again on the testing and if the report finds them at fault I would accept the shipping paid by me to be refunded, again, have it in writing as pre-agreed, and again, this costs time to achieve.It would be a back and forth process, requ<rest of thread truncated>
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    ""hardware_name"": ""Antminer S9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controllers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9 series"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control boards"",
    ""hardware_is_owned"": true
  }
]"
10984,"Date: 2021-08
Topic: Antminer Board Cleaning -Anyone had results with an Ultrasonic Cleaner?
### Original post:
Hi AllI mainly use S9/i's due to price and replacement of hash boards being relatively cheap.I have had some i put in a pile to sell as they do not work or bring a whole S9 down (constant restarting etc), BUT then i have gone to use them weeks or months later and they are fine??The ONLY thing i have done is cleaned them with a stiff brush and them blasted them with contact cleaner.I'm wondering if anyone has had any success with using an Ultrasonic Cleaner and the relevant fluid?This 6.5l seems to accommodate a whole hash board plus i suspect the fluid would last a long time if you clean the boards as i explained above.<link> got any views/opinions on this?Thanks

### Reply 1:
I would go cleaning with canned pressurised air and isopropyl alcohol.

### Reply 2:
tossed a few in the dishwasher before

### Reply 3:
dont use ultrasonic as the vibrations may remove some of the parts that are on board.we have it at work (smaller scale) but never use it for this reasonsecond this one on ebay is way too cheepmaybe cant do the workwe have one with just 350ml bath and costs around 10times that price.my stolen account lowbander80 was legentarymining since <truncated>

### Reply 4:
You can use dish washer to clean the boards and dry it under the sun.

### Reply 5:
Is this a joke using a dishwasher to clean boards?Surely water would cause damage?Are you using a washer tablet as well??I've ordered some iso alc 99.9% in a sprayer, only sprayair i can get is in a can does not last long.Cheers

### Reply 6:
Not a joke. In general, clean water will NOT harm a miner - or for that matter most other electronic devices: PROVIDED THEY ARE ALLOWED TO THOROUGHLY DRY OUT BEFORE APPLYING POWER AND TURNING THEM ON. Water mixed with other cleaners is used in many areas of electronic device manufacturing. Using soap is fine as well but the concern there is that the boards must be very well rinsed off to remove any remaining traces of it. A final rinse with IPA to help drive out moisture before drying would be a good idea as well.

### Reply 7:
Yeah but steer clear of using any dishwasher designed detergents and finishing agents ...A lot of them are pretty nasty on metal over time, so even one wash with them could precipitate later damage and failure.

### Reply 8:
Cheers guys, i'm about to put x3cards in my dishwasher (no detergent/plain water which is soft in my area as well).I'll leave them dry on a radiator (we have them in the UK...lol).Then i will spray them with IPA, it's just in a normal manual sprayer.I also have cans of carb/brake cleaner is in pressurised cans with straw nozzle ends, this stuff also evaporates, has anyone tried that?Thanks

### Reply 9:
Highly recommend a rechargeable or plugin Compressed Air Duster. Then you don't have to buy/store multiple canisters of compressed air. This was a great change for me in my normal device maintenance.

### Reply 10:
I cleaned the hashboards with isopropyl alcohol and compressed air, and after installing them in the mine, paradoxically, one of them stopped working.Uncleaned went and cleaned does not go.I let the hashands dry thoroughly.How is it possible?

### Reply 11:
Bad cable connection?

### Reply 12:
no ... the cables are fine, so i don't know what could have happened.

### Reply 13:
ESD damage then, maybe?Did you work with ESD precautions?

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  {
    ""hardware_name"": ""Ultrasonic Cleaner"",
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    ""hardware_name"": ""canned pressurised air"",
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    ""hardware_name"": ""isopropyl alcohol"",
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  },
  {
    ""hardware_name"": ""dishwasher"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""iso alc 99.9% in a sprayer"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Compressed Air Duster"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cable"",
    ""hardware_is_owned"": false
  }
]"
23129,"Date: 2019-11
Topic: How are dev fee's included into firmware?
### Original post:
thank you that is very helpfu. So in theory you can replace cgminer and remove dev fee.

### Reply 1:
No, you can replace the driver that cgminer uses and use the OEM one but that would most likely break the modified cgminer code. cgminer is a generic mining program that relies on a driver to communicate with a miner. Each kind of miner has a custom driver that is written for it and that driver is (well, was) the 'secret sauce' that the manufacturers do not want released.One has to assume that you are using non-OEM firmware for various reasons such as tweaking speeds & chip voltages. However if you change cgminer - or the driver - you lose those supposed advantages to the firmware making it a rather pointless excercise.

### Reply 2:
Sort of. It is coded into the driver that cgminer uses to interface with a miner. More specifically it uses the #xnonce function to parallel mine to a different account (the dev ones). That in itself is one of the issues (using #xnonce) [edit: or is it #xnsub?] some folks have with the software as it opens a security hole to do work - ANY work, not just mining - that is invisible to the operator of the miner.

### Reply 3:
Hi,Wondering if anyone knows how developer fees are included into asic miner firmware? Are they baked into the compiled version of Cgminer.

","[
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  {
    ""hardware_name"": ""driver"",
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  },
  {
    ""hardware_name"": ""OEM firmware"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""asic miner"",
    ""hardware_is_owned"": false
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16214,"Date: 2022-03
Topic: Mining device recommendation
### Original post:
Hello friends, we have established an organization to support children and families damaged in the war. We plan to cover the care, education and protection expenses of the children who were left without a family during the war, with the income we will earn by mining within this organization. At this point, we would be very grateful if you could tell us the mining configurations that we can get the best efficiency with the most appropriate budget.Best regards.

### Reply 1:
TERRIBLE idea.Mining of any sort is a gamble and certainly not to be relied on for an organizations income.Even if the gear is donated, you still need somewhere to house the very loud and hot miners as well as access to very cheap power to feed them.

### Reply 2:
Is there anything you can suggest to increase our income and to be more helpful? Because at the moment, we are trying to help with only limited donations. We need to be able to help more by increasing revenues. Because there are people in really difficult situations.Also thank you for your reply.

### Reply 3:
Just prove them the help you can afford. Bitcoin mining is more like a long term investment, which also carries some risk. You don't expect earning profits right from day 1 when you set up your mining farm.Worse still, what you are attempting to do is like using the donated money to risk it all into some venture you are not aware of. What if you lose it all before it does even it's intended purpose?

### Reply 4:
I disagree, mining is a very short term investment, many Chinese miners call it ""a hit and run"" which is a perfect description of how mining businesses actually work, you have a very limited duration and racing against the mining gears you invested in to become 1-obsolete and cost more to run than profit 2-They break and stop mining for hardware related issues.OP, I'll side NFW here, mining is not suited for this kind of operation, to be honest, the whole crypto industry isn't for that matter, if I have people sending me money to feed orphans I would surely not put any of that money anywhere near a volatile market, instead, maybe invest some of that money to teach those kids some skills which they can use later on in life to earn some money.

",[]
11156,"Date: 2022-05
Topic: Loud fan on R4
### Original post:
I just received a second hand bitmain R4, getting a good hashrate but it's quite loud for an R4 (around 65-70 dB while it's supposed to be 52dB). I've taken it apart removing the fan and when turning it manually i can hear a sort of crunching sound which i'm guessing is metal in the bearings. Only problem is now i'm not sure how to take the fan bearing cover off without breaking it. Has anyone had experience in repairing these or ideas to make it quieter? <link>

### Reply 1:
I would like to replace mine as well let me know if you find a replacement I've looked and couldn't find one.

### Reply 2:
I resolved this too many times to count with some WD40. Curious what you come up with otherwise.You can always pick up a new shroud from a non-working unit and swap out the hashboards.

### Reply 3:
Any grease spray might be work but I think the bearing should be replaced if grease does not work then your last hope is to replace the bearing the only problem it looks like it's hard to remove the metal under that fan motor. It seems that you need a puller to be able to remove the metal part on the motor. If you have a motorcycle tool you can may be able to pull that metal part the tool looks like this one below

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  {
    ""hardware_name"": ""fan"",
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    ""hardware_name"": ""fan bearing cover"",
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    ""hardware_name"": ""shroud"",
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    ""hardware_name"": ""hashboards"",
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    ""hardware_name"": ""grease spray"",
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    ""hardware_name"": ""puller"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""motorcycle tool"",
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]"
11032,"Date: 2021-11
Topic: ASICWAY miners
### Original post:
Just wondering if anybody has bought from ASICWAY yet and a review of their shipping and equipment. Their website says they are in California something just don't seem right. EDIT: Anybody in Sunnyvale Calif that can go check them out

### Reply 1:
Never heard of this and I tried to check it on whois but it seems that the domain is pretty new it's just a few months old. I never trust any newly registered domain so I suggest you don't buy to them instead go directly to the manufacturers or verified distributor. <truncated> Ltd. d/b/a <truncated> <truncated> <truncated> <truncated> thing that I found is the scam accusation that you can find here <link>

### Reply 2:
Thanks. I have not been asic mining for the last 2+ years and someone else asked me about ASICWAY. I did go to the buy page and they emailed me a link for the cart ( I don't plan on buying) but the email came from a BIT HARP.com, not sure who they are but another one to avoid.

### Reply 3:
Hah hah hah, what an obvious scam it is.Better not waste any more time on it.

","[
  {
    ""hardware_name"": ""ASICWAY miners"",
    ""hardware_is_owned"": false
  }
]"
24005,"Date: 2022-08
Topic: How can I get a result less than the network's difficult target ?
### Original post:
In bitcoin blockchain,each block contains SHA-256 cryptography hash,when a new block is generated in the blockchain ,there is a Proof of Work, the PoW requires miners to find a nounce which is hash along with the blockchain for the result to be numerical smaller than the network's difficult target.How can I get the result to be less than the network's difficult target ?

### Reply 1:
Are you talking about altcoins? Because I think you can't able to target less or lower network difficulty you can do that before but right now you can't most of the mining units right now are plug and play(Setup pool and account.) Or are you talking about the network hashrate result on a given difficulty? You might need to read this link below- <link>

### Reply 2:
Yes am talking about network hashrate, I have taken my time to read the link and I have gotten my answer. This link is really helpful

### Reply 3:
You get it by randomly hashing a nonce, this is how Bitcoin mining actually works, the difficulty target is pretty small, getting a hash result below it is incredibly difficult and needs a ton hashing power.

",[]
11246,"Date: 2023-01
Topic: Antminer S19J Pro - To buy or not to buy ?
### Original post:
Hello miners,I am thinking about purchasing an Antminer S19J Pro (104 TH/s - 3068W). Are there any important points that are essential to know before buying this model that would speak against a purchase? For example, known issues, serious errors, incompatibilities with certain other components or pools ... ? What firmware is the latest and what software is recommended, what Step-By-Step instructions are worth to read for someone never owned an Antminer?Glad to receive helpful answers.

### Reply 1:
We already have some guide here for newbie you just need a little bit of research to find them. Anyway, check this link ""First time/Small miner reference for getting started.""About s19j I don't know if this unit is problematic but take note of flashing it because there are two types of control board on this unit.

### Reply 2:
Hi and thanks for your feedback. The link you provided is not new to me, unfortunately is not related to my question (plus very dusty). What exactly you mean by ""take note of flashing"", do you mean I should upgrade the firmware at the 1st step? Can you provide a link with more details on this? Thank you.

### Reply 3:
There are two types of s19j pro that bitmain released I heard many complaints about flashing this unit with the wrong firmware.The two types that I mean are the BB board and the zynq 7007 board.Sample this issue s19j PRO won't fully boot after firmware update.""So make sure to check the control board to use the correct firmware before you flash it.And don't flash the unit if the miner is working fine; only flash the unit if the unit has some software issue.

### Reply 4:
Thanks a bunch for providing that information. Will keep an eye on it. Anyone else, something worth to know about this model ?

### Reply 5:
I have a few of the 110th S19Pro's 4 x of the S19A models have been running well over 6 months or so but I did have a single control board fail.Out of 5 other S19J Pro's 110th models I have had 2 issues with the control board not seeing the 3rd hashboard in the chain. 1 of which even has a charred control board straight from Bitmain... So my short term assessment is you need a bit of luck with the S19J Pro models whereas the S19A Pro's seem to be a bit more solid... Or maybe its just crappy luck

### Reply 6:
Much appreciate your feedback Sledge.

### Reply 7:
despite the hashrate and energy specs what is difference between s19 s19j s19j pro ?which s19 model is worth for buying except the most expensive s19 xp?

### Reply 8:
I think the XP is waaaay overpriced. s19s are mostly the same, but J is using a bit less power if I remember correctly.Check the specs at bitmain.

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16327,"Date: 2022-09
Topic: Liquid Cooled Mining - Has anyone build a simple system with one or two cards ?
### Original post:
Hi AllI have a few spare cards/control boards that are not used and was thinking of making a simple oil cooled system that has no circulation or a simple cooling system.It would be just to keep noise down basically, could i not just drop/suspend mining boards in a solution along t=with the PSU (fan removed( plus the control board with 'fan <truncated> Or is there now software to do this?RUB (Really Useful Box's) seem sturdy enough.Anyone done this?Cheers.

### Reply 1:
Take note if you talking about ASIC units like s9 you can only submerge the unit but not the PSU because there is a big chance that it won't work or end up with power failure.Cooling tanks without circulation are not good for the long term unless you know how to monitor the temp and set your miner to auto idle or restart when the target temp is reached.About the simulator and other control, you don't need any fan simulator or any device to bypass the fan check. You can disable them by going to switch to Braiins Os and then enabling the immersion cooling.

### Reply 2:
Thanks for reply. I have been looking for simple liquid cooled setups. I thought you could only disable monitoring off one fan with BrainsOS and both would need disabling. Also where is the auto restart function?I set up a miner to run at a remote location today and it stopped after 10 mins and i was miles away. It was only on 2 cards and set to 800w so I presumed it would run easily but its failed ??I thought brainsOS was capable of keeping the miner running somehow with its auto tuning function but apparently not. ..I think I need to look into how to access them remotely somehow but I suppose thats another post. Thanks for replying.

### Reply 3:
Why do you want to use the auto restart function I think you can do that by using BOSminer API or try to look for Dynamic Power Scaling if your using BraiinsOS+Check this <link> you tried to reduce the power since you only have 2 Hashboards(I don't know if we talk about GPU or ASIC?) the miner might be already reached the temp limit you need to check carefully and auto-tuning is normally stopped/restart automatically because it's calibrating based on Braiins documentation it takes 2 to 6 hours before it stabilize and also check your PSU if it can provide enough power.

### Reply 4:
What a great feature!So BraiinsOS+ now runs BOSminer not CGminer like older FW.I was running an S9 on 2 cards with a APW3++ 1600w psu set at 800w, it must of been auto tuning, i am new to this FW....It is now running and showing 7.66TH on Slushpool, i bet it is running at a very low temp and could be raised but i have no way of altering it or adjusting it unless i physically go to the location.I did try leaving an old laptop at the location with teamviewer installed but that kept timing out so did not work.I have 4 other miners there and i'm always losing out on Th as i cant adjust/restart the miner, although as you stated the newer FW will help matters to some degree.One thing i find odd about the feature is the option to shutdown miner when minimal miner power is reached, in the link its st to 600w, why shut it down for an hour when it reaches that level? What's the purpose, why not just continually reduce wattage/chip temps and keep on mining?Why the 1 hour, a resart at a lower pwer level would suffice?Thanks

","[
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22996,"Date: 2019-07
Topic: WHATSMINER M1 Sudden fail but still connected to server
### Original post:
helloI guess either your miner has problem connecting pool , or Its infected by virus please put your system log here

### Reply 1:
Hello,my miner suddenly stop working, below is what it shows, no hashboard nothing.<link> was working pretty fine until here, Pangolinminer did not respond me for month now i have to found a solution for that. I think about the control board but it is pretty strange that the server is still working as usual. The place is host at about 1h30 from my place so i can't really access to it to try some stuff locally.Did something like that happened to you or what could i try to help with it?Thanks

### Reply 2:
Have you tried to reset it? if not, do this first by holding IP found/Reset button for 20 seconds then release then remove and power it again.After that setup the pool again and check the status page again.You can find the button on the middle near SD card. Look at the image below.Make sure before you perform the hard reset procedure it first for a while then perform the hard reset procedure above.If this didn't work try to download the solution from their support area from here Whatsminer User Guides & Solutions.

### Reply 3:
Hello,Thanks for the detail, for the first part, miner should be plugged it, and then press the reset button for 20 seconds then, unplug it, and plug it again?Whats the difference between the first 2 procedure you describe?First one, plug in, press reset 20 seconds, release, unplug and plug againSecond one, let it run 60 seconds then press 60 seconds, unplugThird solution would be the solution from pangolinminer but mostly it's a plug and unplug procedure :/Thanks by the way

### Reply 4:
Don't follow what is in the image I just got this image from google.Follow only the first procedure which is hard reset procedure. Honestly, I don't know if it will work in this miner but it works on most of the miners it will reset back to default factory settings.If this method doesn't work try to contact this man Pangolinminer or go directly to their official thread here <link> then tell them about your issue.

### Reply 5:
Hello,thanks for the ansewer, i was since trying to find something but now it is by me so i have more time to try it.So, here is what i found:The issue is pretty strange both fan are not working (swapped them with regular 1440RPM just for test purpose and they works) but i have no information on the board as you see on the follwing picture.Here is what i have on the board:Code:E009 Slot-2 temp sensor error Reset hash board 436 Wed Jun 26 14:47:40 2019 system-monitorE006 HS < 2.4T Restart cgminer 1 Tue Apr 16 07:00:07 CEST 2019 cgminer-monitorE011 Slot-1 Zero HS 180 seconds Zero HS Warning 118 Wed Jan 2 16:05:02 2019 system-monitorOn the API LOG i have this one :Code:Socket connect failed => Connection refusedAnd what i found interesting on the log is :Code:daemon.err <truncated> system error state: slot:0, cgminer:1, pool:1, fan:1, temp_sensor:0, temp_over_heat:0, <truncated> you please try to help me find a solution (maybe order some parts) for that issue as it's not working for the past 2 month...Thanks!

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13603,"Date: 2018-12
Topic: Antminer S9 FW with voltage/fan/frequency control
### Original post:
Hi, I just made some binaries for our Antminers S9. It works also with R4. It might work with T9, but I didn't test it.I decided to compile bmminer from official bmminer GitHub repository and since I am no programmer, I am unable to pass per-board parameters, so all binaries have fixed voltage for all chains, it requires only one fan and 3000 RPM max is enough (good for R4 or silent fans).All versions have treshold of 675MHz+ where voltage is maxed at 9.4V for the chain (0.4476V at chip) so you can easily switch between low speed efficiency and maximum overclock. I can confirm, that 14TH/s machines can easily OC to 18TH/s+, but require two APW3 PSUs (it will draw about 2kW at 18TH/s).Please note that 14TH/s machines are selected by bitmain and they have better efficiency, so they require lower voltage at 14Th/s compared to 13.5TH/s. Typical 14TH/s machine has 8.8V each chain.Miner reports its version with voltage. Please consider your skills, I am not responsible for any damage you did.How to?Download correct binary of target voltage you wish to use.1) Run Putty and connect to your miner IP.2) Log in, L/P: root/admin3) run command in Putty: <truncated> stop4) now, you stopped minin<rest of post truncated>

### Reply 1:
Thank you RadekG2,Any chance you might want to share with us how you compiled Bmminer? We would love a small tutorial here or on <link> would be great.

### Reply 2:
sure, here is tutorial video<link>

### Reply 3:
The only 'safe' speed is the speed the miner had when sold. Even then an unmodified s9 is not known for being reliable.When you overclock you are on your own and yes, you WILL shorten the miner life even more.

### Reply 4:
All miners have safety built-in cut-off temperature (can be disabled), where miner stops and cools down. Maximum speed depends on chip and VRM temperature. My own experience is that S9 survive temperatures over 110C at chips for 24/7 operation. For those who do not agree just looak at Antminer R4 which is ""silent"" and always works at 110-115C. Anyway, based on earlier S5, chips they unsoldered themselves under full load, so temperature exceeded 200C. They worked again when resoldered back.So back to temperature: It is not possible to check VRM temperatures, but first batches of S9 was without heatsink on VRM. They worked well at standartd frequency, so newer batches should work well when OCed. My opinion is that only VRM temperature is the only limit of OC level, so keep temps as low as possible. Unreliability of S9 leading to lost chips is caused by unpredicted behaviour of chips in serial chain. This will cause temporary overvoltage of some chips which will destruct them. Only one dead chip can make whole board stop hashing or prevent detecting of ASICs. Unfortunatelly, S9 still hasn't reliable overvoltage protection.I do not agree you will shorten life of your miner in any measu<rest of post truncated>

### Reply 5:
Based on my experiences with Antminer D3, some boards works better at higher frequency at the same voltage level. The correct frequency was only one unique frequency. Lower didn't work and higher didn't work also. It is probably because of chained chips are dividing voltage between each chip group a bit different at each frequency.Check kernel log for ""setting working voltage"" where you will see which working voltage it applies with autofreq or with fixed voltage. Autofreq boards has different voltage for each board while fixed freq sets the same voltage for all boards. I was shocked, that at 600MHz fixed firmware applied 9.3V for the chain and at 650MHz it undervolted to 8.8V.

### Reply 6:
Whats a safe TH go adjust to without burning boards out?..Thanks

### Reply 7:
What do you operate your S9's at?..I have mine adjusted up to 675M running about 14,300/14,500 TH they seem to be fine, low temps and 0% Diffa.. but its unknown territory as to will we burn boards out..or does board burning come at 15TH plus..Your thoughts Thanks mate Jase

### Reply 8:
Cool Thank you for your detailed answer, your experience is appreciated, I have 15 now running at 662Mhz to 668Mhz at 14,150Th 14,300Th with lessthan 10 HW faults and 00000% DiffA# they seem to be running better on the 650 fixed firmware then the Nov 17 Auto Fq Firmware.. and temps are 82 max.Cheers Jase

### Reply 9:
This Is 650 Fixed FirwareCode:Fix freq=662 Chain[5] voltage_pic=108 value=880Fix freq=662 Chain[6] voltage_pic=108 value=880Fix freq=662 Chain[7] voltage_pic=108 <truncated> = <truncated> = 0x00000000Chain[J6] has 63 asicChain[J7] has 63 asicChain[J8] has 63 asicChain[J6] has no freq in PIC, set default freq=662MChain[J6] has no core num in PICChain[J7] has no freq in PIC, set default freq=662MChain[J7] has no core num in PICChain[J8] has no freq in PIC, set default freq=662MChain[J6] set working voltage=880 [108]Chain[J7] set working voltage=880 [108]Chain[J8] set working voltage=880 [108]Is that <rest of thread truncated>
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22606,"Date: 2018-05
Topic: Whatsminer M2 - Temperature sensor error
### Original post:
Hi,I brought a Whatsminer M2 five months back. Since last week it is not hashing. PSU is working fine. It says inWhatsminer DashboardEvent cause - Slot 0 Temp sensor errorEvent Action - Reset hash board <link> system logSlot 0: Sensor invalid, reset hash board<link> anyone pls let me know how to reset the hash board or factory reset the miner ? any help is much appreciated.Thank you, Rohith

### Reply 1:
Check data cable and power cable connections.Try soft reset in the software.Try hard reset by using the reset button in the miner front panel.

### Reply 2:
Yeah, I unplugged and plugged again all the cables in the miner. I tried both software reboot in miner webpage and reset using reset button on miner. But I found it just resets the pool settings and not the whole miner (since it didn't change miner login username & password)Any procedure to do full miner reset ? or any further suggestion ? Tried the troubleshooting guide <link> from Whatsminer. Page 2 / 5 Though the guide is for M3, it looked same for M2Thank you, Rohith

### Reply 3:
If any of those tips shown in that 'Help Desk Document.pdf' doesn't work, I would contact Pangolinminer for more specific troubleshooting.

### Reply 4:
@rohith_rDid you manage to resolve this issue? I'm getting the same error

### Reply 5:
I've had the same problem and cleared it by taking the miner apart and blowing the dust out. I was a chunk of fuzz causing the read error. I'll be listing an M2 on eBay w/o PSU soon. Prob go cheap.

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23157,"Date: 2019-12
Topic: Antminer S9 - 63 Asic but does not hash also Temp fixed at 15
### Original post:
The other 2 boards are working just fine but this one shows 63 asic yet does not hash. Any idea why it might be? Anyone experienced that?Here is full kernelCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0<rest of post truncated>

### Reply 1:
As the above said your problem about is the temp sensor with this error below:Code:Read temp failed, set fixed full fan speedAnd the miner frequency is set to 700 which is high. If you are using the latest firmware version of antminer s9 try to run it at ""low power mode"" you can find it under Miner Configuration in working mode. If the low power mode doesn't work try to run it with Braiins OS to bypass the temp check.

### Reply 2:
Possible the temp sensor in the chip failed. I wonder what they use to sense temps on die.

### Reply 3:
Low power mode did not help. I can try Braiins OS but does it happen because of temp reading failing?

### Reply 4:
In this particular case most probably. S9's are really into reading the local temps and adjusting the clock/hash/fans accordingly to keep the chips from melting off the unit. It's a safety thing (and a good one IMO). The right fix would be to find the flaked chip and replace but if BrainnOS can tell you which chip isn't responding and turn off the alert for that chip the rest of them would probably be accurate enough to hash away.

### Reply 5:
As I notice temp reads are being done on 62 chip(which could be the last chip aswell) so if temp read fails, can we say its most probably the last chip might cause that?

### Reply 6:
62th chip is indeed the last chip, first chip is 0 , nonetheless, this should not stop the hash board from hashing, I have no technical explanation to back my statement with, but from personal experience, I do have boards which work perfectly without a working temp-sensor, some show 15 some show -- , it doesn't matter they all work just fine.here is what I would try1- Flash a different firmware, it doesn't matte if it's Bitmain or something else.2- Unplug the other 2 boards and try the bad board alone , swap the data cable from a good board to this bad one.3- inspect the board for physical damage or loose heat-sinks.

### Reply 7:
Have you tried the miner with Braiins OS to bypass the ""temp check""?Much better to try it first in Braiins OS to test and troubleshoot the issue then flash it back with bitmain firmware. So that you can find the issue if the issue is the temp sensor or the ASIC chips.

### Reply 8:
Tomorrow I will make a cleaning for the deviceboards and follow what you suggested. I will let you know the results.ANOTHER UPDATETHe 3rd board is hashing with lower power mode but this way it still hashes 9Th total due to LPM. Does it happen because the board is about to die? One chip fails to hash with high frequency?Does braiins OS have option to adjust frequency of EACH chips?

### Reply 9:
Yes , it's likely going to die, there is no point in lowering frequency on each chip , you won't even know which one is bad, what you want is lower the frequency or/and increase the voltage of the bad board ( all 63 chips ) , use Braiins OS , using default frequency you should get 4.5th on each board (assuming the miner is 13.5th) and then by lowering the frequency of the bad board you should get 3.5th or so , so you will end up with4.5+4.5+3.5 = 12.5th which isn't bad, you can also try to squeeze a bit more hashrate of that bad board, what you want to do is lower the frequency gradually until you find the best value for the board.By the way , is this the middle board you having an issue with ?

### Reply 10:
I don't believe braiins does, they do a per board but unless it's changed not per chip.vnish and asicseer do this though.

### Reply 11:
I will check them if they are free. Maybe per board also work for me.Edit. They both have Dev fee but I can still just test one to see if I can do what I think. They dont have a guide to run th<rest of thread truncated>
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23543,"Date: 2021-04
Topic: Whatsminer M21S boost circuit IC or chips
### Original post:
HiI would like to know that whats is the model of this chip.The numbers which are printed on chipset are 37501809 or maybe1808It has been located in boost circuit as I have marked by white arrow in following image.<link> couldnt find any information on internet.

### Reply 1:
Can you take the actual image? the link image above is not clear but if you have a phone adjust your rear camera to high settings.Must be thisThen take a picture of the board focus on the ""boost circuit"" if you can't still see the exact model of that IC try to clean that part with alcohol or thinner and take a pic again. If it's still not clear then you might need magnifying glass or microscope.I tried to search all of those numbers in Google and most chips that I found are 4 pins, not the 3 pins.

### Reply 2:
I have find this two photo in my phone that is attached link at the end of content and I have tried by microscope to find number.The first number at first line is clear and it is 3750The second number at second line is partly fogged and I guess it is 1809 or 1808.Ive googled both number and I didnt find 6 pin on the internet therefore I have posted this issue to help to find the chip information or any replacement chip.The act of circuit has written on the image and it is conver 13v to 17v.<link>

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10891,"Date: 2020-06
Topic: New s9 upgrade thread. Some info on gear/upgrade.
### Original post:
spacerJune 6 edit.I am getting an s9 upgrade kit.3 drop in hashboards.If you have spare s9's you could hold them and wait for my test results.The boards are due today.Working firmware will be released to me on Monday.I have agreed to not say the builder's name.I have been told the new boards will have high medium low settings.When I do testing I will test1 board miner on all 3 speeds2 board miner on all 3 speeds3 board miner on all 3 speedsinfo here and info at YouTube will be posted.if gear is as speed and watts have been told to me. they may be worth holding onto your s9's for a few weeks.Since I don't have boards or firmware or prices.I will leave this thread locked for now.I have told by the builder thatThey are more efficient and they hash more than the s9e.so they will hash higher than 16.0 th and burn less then 1280 watts

","[
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23513,"Date: 2021-04
Topic: Repairing S9 Hashboard Australia
### Original post:
Hi All,First time poster and Newbie on the forum.I currently have 4x S9 with 4 faulty Hashboards, also bought 5 faulty boards from Ebay last year with a plan to fix them.Time got away from me and i have started to buy the bits and pieces required.Mostly have faulty chips i gather and 2 wont start the antminer, the power supply starts but the Antminer has no lights.Brings me to my question do i need the S9 Chip Tester Stand or can i just use the multimeter as per the test points.I know it will take me longer to diagnose but in Australia with shipping they want $400 for it.As i can't find anyone in Australia to fix these hashboard was going to start a little hobby of fixing them and also keeping my S9's running.Will keep you all updated with my progress on repairing the boards with photos.Cheers

### Reply 1:
I think you can use a multimeter to check if the chip is dead or not there is a diagram on zeusBTC that you can follow to find a faulty chip with a multimeterYou can find it from here <link> it would be better if you have a test fixture that you can use to easily detect faulty chips.The test fixture was built to easily detect any faulty chip and I suggest you find more guides on how to repair the s9 hashboard from this link below.- <link> down and you will see all kinds of hashboard repair guides under that link.

### Reply 2:
Yes you can, the problem with the stock firmware is that it only feeds the board for a short while ( a few seconds), and then it stops when it doesn't find all 63 Asics, there was a diagnostic firmware floating around back in 2018 which I can't seem to find now, that firmware had a ""test"" mode in it which keeps feeding the chips so you can measure the voltage, so you are going to need that firmware.I also think using custom firmware like Vnish (Asic.to / Awesomeminer) and then using the auto-tune function will give you a lot more time to measure the voltage, so you can try that as well, keep in mind that every domain has its normal voltage readings, make sure you check the manual posted above for more details.

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24091,"Date: 2023-02
Topic: Avalon 1246 randomly restarts
### Original post:
So, I have a 1246 that has been running well for a while now, but recently began restarting randomly. I ran aging process, no change to behavior. I literally sat and watched the log for about an hour and was able to grab it right before it restarted, did this a couple times.PVT is coming back with a negative value for some chips, at least one chip on each board. NOT the same chips each time....Here is a copy of the <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':27096,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1479384.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[845] <truncated> LW[762486] MH[47 473 44] HW[564] DH[3.986%] Temp[30] TMax[77] TAvg[62] Fan1[2707] Fan2[2194] Fan3[2693] Fan4[2648] FanR[31%] Vo[330] PS[0 1210 1321 136 1808 1320] PLL0[11143 6754 11458 334] PLL1[9969 6210 10566 363] PLL2[10343 6046 10622 346] GHSspd[78186.16] DHspd[3.986%] GHSmm[81567.52] GHSavg[67502.85] WU[943<rest of post truncated>

### Reply 1:
Look at your ECHU it shows abnormal mostly a sign of overheating and these negative values on a few chips are also a sign that the chip is overheating.Would you mind to try force your miner to normal mode? According to your logs, it's running in performance mode.Or try to adjust the fan speed of your miner because it's running at a low speed around 31% increasing the fan speed might help to avoid this issue.

### Reply 2:
Hi, I checked your log. <truncated> is displayed, which means that there is restart caused by no hash rate within 5 minutes.

### Reply 3:
you have few bad chips on boards <link>

### Reply 4:
Hello, I really want to get your ""MY FARM"" software, the page download link is not available here, can you send it to me by email?Thank you very much! I wish you all the best! my e-mail: <truncated>

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13709,"Date: 2021-09
Topic: POWER CONTROL OF ASIC MINER
### Original post:
Hi ,I want to control the power limit of my PSU . I have antminer S9 SE and i tried using the firmware BOS toolbox of BRAIINS but without success ...Could someone here tell me if it is possible and how to control the power please ?Thanks

### Reply 1:
Braiins and a bunch of other firmware providers like HiveOn and vnish don't have images for the S9 SE, so unfortunately no.

### Reply 2:
thank you

### Reply 3:
So it is possible with other versions of S9 . Did you ever tried to limit the power ?

### Reply 4:
No, but once you install the Braiins OS+ firmware (I do not think autotuning is available in the open source version) you can go to the settings in the web app located at Mining > Configuration > Autotuning and then adjust the Power Limit setting to a new value in watts. And this setting also appears right after you finish installing Braiins by the way.You can also install BOS toolbox and then from the command line you run these:Code:# from <link> config --user root load <truncated> the CSV file using a spreadsheet editor (e.g. Office Excel, LibreOffice Calc, <truncated> config --user root -p admin --change-password save_apply listOfMiners.csvand look for a setting called psu_power_limit in the autotuning section or something named like that.

### Reply 5:
Everyone using Braiins OS+ is limiting the power. There is no speed control, only power limit control. You tell the miner how many watts to use, and the autotuner does the rest.It works perfectly fine with supported miners. The S9SE is not supported as you have already been told, it is a different machine that has nothing to do with the S9, its closer to the S11 which is also unpopular.Also, Braiins OS+ is not modded firmware, its built from scratch, so there is no way to compare it. Think wiping Windows and installing Linux in your PC.

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22596,"Date: 2018-05
Topic: Chain 7 is not functioning  -  S9
### Original post:
Hi All, i don't know but from some reason Chain 7 stopped working <link> suggestions ?

### Reply 1:
You should provide the kernel log. The board may be defective, you can boot with one board plugged in at a time or with a different power supply to see if that helps.

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    ""hardware_name"": ""board"",
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10853,"Date: 2019-10
Topic: Whatsminer m21s arrives this sat the 27th of July
### Original post:
Pangolinminer is shipping me a m21s. Should come tomorrow.This should do 56th and 3300 watts. Not sure if it has a low speed.

### Reply 1:
Nice I knew you planned to spread out your gear purchases, but didn't know you were looking at the 21's. Nice to see Whatsminer is starting to launch units with working LPM, ideally this will role out for the other models soon. While nothing special at low power costs they are definitely viable, might be a nice unit to host with Pangolin for some if that service pans out. Keep the shipping and import costs down.

### Reply 2:
Spacer.Feel free to post your thoughts on this unit.edit: This m21s sells for 1900 The m20s sells for 2800Pre trump taxPre shipping.Both use 3300 watts.One does 55 th the other does 68th.So you get about 13 th for free power and pay 900 in cash for that.0.00002777 x 13 x 10200= 3.67 a day so 900/3.67 = 245 days.The extra shipping is 50The extra trump tax is 225So 275 extra if. USA basedMakes 1175/3.67= 314 days. So it may make no difference as to which you buy.As 245 to 314 days is a lot.M21s is in house will be running it soon. It basically looks just like the m20s.So the good news it is up and running yeah baby.It has a working low power firmware yesss!!!imgur is down can not link photosback up and here is gui it has yet to tune on low tuned on low it is really quiet fans are well under 2000 rpmdoes 29th at 1750 watts about 60 watts a ththis is a 1900usd unit running it at 29th means a long roi even if power is free ,but it would make a decent space heater for the winter.So if noise is an issue you could use this gear. 29th is 29 x 0.00002777 x 9500 = $7.65 usd a day for low speed and free power.

### Reply 3:
<link> + shipping + trump taxcorrected the error.

### Reply 4:
These are shipping Nov. for everyone but Phil

### Reply 5:
So you check meter at like 000070.00 and ten hours later it reads 000087.00 then 87-70 = 17/10 1.7kwatts an hour for low?

### Reply 6:
I wish as I could use ten yesterday.I now have2 m20s. Demo model1 m21s. Demo model1 s17 pro <truncated> a demo1 t17 40 th <truncated> a demo2 a1041 37th beta model1 inno t3 <truncated> a demoAnd waiting on 1 Inno t3 t50.What do I think of all the gear above?If it were the world according to PhilI would have purchased all s17 pro 53 th 100 of them I had a chance to buy 100 for 220000 usd the window was small and I was short that much cash. But it would have been a really good move.By the time I got it I new I should have ordered more.I have 160kwattsso 100 s17 pro 53th set to low speed will pull 1450x100= 145kwatts and do about 100 x 40 = 4 phBack to the m21s. It is pretty quiet it is 91 f in my garage and it has a fan speed set to about 1800 rpm on low speed.You cant tell it is running on low speed. High speed it will wail.The most disappointing of all above was the inno t3 t39The avalon I can't judge since it was a beta model the psu is not the stock one.

### Reply 7:
some high speed results55,915 at 3460 watts gave me 61.87 watts a th. it is loud and industrial at high speedsecond test I got55,915 at 3480 watts about 62.2 watts a th.I will do a low speed 10 hour watt use test. I have a hourly kilowatt meter.does very good numbers overnight more accurate then a kwatt meter.I wish low speed was more power efficient then 60 watts a th which is why I will do a longer more accurate test.it is quiet on low and does 29th and 1750 watts fans at 1750-1850 rpmI just set it to high I am guessing it will not be quiet. Would love to see if it can do 55thIt is still tuning fans at 5500Okay we are at 55.9th nasty pitch noisepulls 3550 watts about 63.5 watts a thso I am a bit under 56th spec at 55.9 but +- 5% with easemy power at 3550 vs 3360 is +5.6% but they have watts at -+10 %This is industrial if you run it at top speed and it easily can run in your house on low speed.If you have it at home maybe you can turn it up in the day and down at nite.

### Reply 8:
Yea best pricing was end of Q1, early Q2 with most shipping dates to go with.My T2T 30T are pretty nice besides the lack of fan tuning unless temps are 50C which is never.If the M21s is really that quiet, I'd be happy with that too. Only have room for 2200w so basically one more unit before having to replace gear.

### Reply 9:
Hope so. Meter was at 001070.00 so 10 hours should be 16.5 to 17.5 kwatts7 hours later meter reads <truncated> 11.6711.67/7 = 1.667 kwatts or 1667 constant watts it hashed at 29.054th so 1667/29.054 = 57.3759 watts a th on low so my hourly kwatt meter tends to bemore accurate then a cheapo kwatt meter.so low speed is 57-58 watts a thand right now in a cooler room it is 740 am, My fan speed is 1500rpm so you can use it on low speed in your home and not piss people off.10 hour <truncated> kwatts /10 = 1670 watts after a 10 hour test. and hashing at <truncated> = 57.469 watts a Th.This gear would be best for a place that can be noi<rest of thread truncated>
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16579,"Date: 2023-09
Topic: Bitcoin Mining Pool distribution monthly reports
### Original post:
Month of July is here and it's time for one more lookup on bitcoin mining pools to see if there are any changes from last months.FoundryUSA is still the biggest mining pool with just over 20% of total hashrate, but there is a switch in second place with Antpool climbing up with 15.27% of hashrate.F2Pool is placed on third place but they have identical percentage with Binance pool, and Poolin is below them with almost 11% of hashrate, and ViaBTC is near them.Terra Pool is smallest register pool with just 0.44% of hashrate and Mara pool is not register anywhere.<link>

### Reply 1:
I am watching Bitcoin Mining Pool distribution and I like what I see now. It looks much more decentralized then before, and no pool have more than 18% of hashrate at the moment.I looked at stats from two website btc.com and coin.dance. We can see some new pools that are growing very fast, like Binance pool with around 7% of hashrate in last 24h. Biggest pools are still located in China.<link> do you think about fast growth of Binance pool? After hearing CZ talking about rollback in May, I am not very happy to see their pool growing so fast. They are now 7th biggest pool.

### Reply 2:
We are already in August and we can see nice increase from last month in Foundry USA pool that now has over 25% of total Bitcoin hashrate.There is a change in second place with F2Pool having around 14% same like last month, but other pools now has smaller percentage share.Antpool dropped to fourth place with 12% and Poolin is now third mining pool with almost 14% of hashrate.Binance pool is o fifth place with more than 11% of hashrate with ViaBTC just behinf them havinbg 9% of hashare.Other pools have significantly less shares, ULTIMUSPOOL is smallest registered pool and Mara pool is currently not detected.I didn't notice much change between mempool and btc.com pie chart numbers, so from now on I am using only mempool space for graphics.<link>

### Reply 3:
Month of September is here and I cam checking bitcoin mining pools again.Foundry USA is still holding biggest share of total hashrate with 21.49% but this month AntPool has very similar share with 20.39%.F2Pool is just above 14% followed by Poolin and Binance pool with almost 10% of total hashrate and ViaBTC with 9.43%.Rest of the pools are much smaller but I see Mara pool is back again with 1.32%<link>

### Reply 4:
Centralization of BTC mining is now at it's worse level in years.Requiring only a collusion of the top 3 mining pool operators to 51% attack btc.Your last post show the top 3 mining pools with over 56% control. A mere 3 people are now in charge of all of BTC security.

### Reply 5:
i think you do not understand how mining worksnor how mining pools work.nor how good pool management software worksmore how good asic miner monitoring software workseven within 1 pool. its not just 1 guy.there are multiple stratums. managed by a few guys where they have thousands of users who can pool jump anytime they like if they see that the current pool is not playing by the rules. even if 3 pools did manage to get all their stratum managers to collude.and all their users onboard and not jump. all they can do is two things:""empty block""or try to go back a few blocks. re-do a block with a different transaction list. and then catch up to re-org the blockchain to then change the confirmed transaction lists of the blocks they can manage to change.the further back they go the longer it takes and more riskier it is to try to change and catch back up to achieve that goal. so its not worth it unless they are trying to double spend large transaction amounts they want to appear as unspend to then spend again later. they are more profitable to gain by just following the good ethics of block mining rather then trying to re-org transactions.and if pools did want to waste hours trying to reo<rest of post truncated>

### Reply 6:
And they are so stupid and malicious they will team up to destroy bitcoin - which now brings them nice money - instead of stay clean and keep earning... right?It's funny to read that you tell others they're wrong, when you are the one decoupled from reality.

### Reply 7:
And you would be wrong, What they can do is DOUBLESPEND! no matter how much energy is wasted, keep trusting 3 people, all they can do is destroy any credibility btc ever had, in less than an hour. Funny, how btc community freaking out about 1 mining pool When GHash.io pool gained notoriety for briefly controlling more than 51% of bitcoin's computing power in 2014.But just say 3 instead of one and the btc genius can't understand the word collusion.<link> cult member never let any security concern keep them from shoving their heads in the sand.

### Reply 8:
Because while 1 pool operator can randomly become evil, the chance for more than one do that decreases by a huge degree?Because maybe FUD was working better back then than now?I don't k<rest of thread truncated>
",[]
24138,"Date: 2023-06
Topic: Looking for Antminer S19 90T firmware (or Antminer S20 firmware?)
### Original post:
So I purchased a used S19 90T. These were among the first S19 series miners announced in Feb 2020. <link> miner came with a June 2020 bitmain firmware installed and was hashing well. I then updated the firmware with the latest S19 firmware available on Bitmain's website. The miner has stopped working after the upgrade and I do not have a backup of the old firmware. Can someone share the original firmware for S19 90T with me?Here's the miner log i see on the unit with the latest s19 firmware. It does not detect any hashboards. <truncated> node 0, pgdat c0b3c040, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf0000 s19916 r8192 d21044 u49152pcpu-alloc: s19916 r8192 d21044 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 209672K/245760K available (6317K kerne<rest of post truncated>

### Reply 1:
wonder if any one have firmware filei noticed that s19 90th has two different model 76 asic and 88 asici still cant find firmware for 88 asic

### Reply 2:
According to previous posts above it is a beta test firmware for s20 miner so it's impossible to find that firmware.Why not try some modded firmware like the firmware from asic.to? Check their thread here <link> You can also check this section <link>

### Reply 3:
hi first flash all hashboards eEprom with code editor then think for other ways.you need code editor to read eEprom code from one Hashboard and write to others.this problem sometimes happen cuz when you change your control board or upgrade it your control board change your hashboard eEprom code and if 3 of them not same your control bord power off all hashboards.maybe your hashboards work one by one.test that.if not worked (probably too low) you need healthy same hashboard to read code from that.sorry too hard for me to speak English.

### Reply 4:
Did you ever find a fix for this, i just updated my s19 90T and the exact same thing has happened to me - tried all the firmwares, and sd cards and i am getting the same error nand: WARNING: pl35x-nand: the ECC used on your system is too weak compared to the one required by the NAND chip Bad block table found at page 131008, version 0x01 Bad block table found at page 130944, version 0x01if anyone found a fix to this i would appreciate it, thanks

### Reply 5:
It's just a warning but I don't think that's the cause of your issue would you mind posting the whole kernel logs here just don't forget to paste it inside the insert code tag just like the other post above because there might be other errors that cause this?Anyway, I have a suggestion that you can try do you mind to try to boot Braiins OS to your unit? Sometimes other OS can bypass this issue.

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23897,"Date: 2022-03
Topic: avalon 1166 pro 75th online but no hash or pool connection
### Original post:
UPDATE:absolutely for no reason hashboard 01 start working <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':4055,'Remote <truncated> Blocks':2,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1673608.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 2 ] Elapsed[786] <truncated> LW[229369] MH[0 7 0] HW[7] DH[46.747%] Temp[56] TMax[74] TAvg[61] Fan1[0] Fan2[0] Fan3[0] Fan4[0] FanR[25%] Vo[314] PS[0 1209 1257 154 1947 1256] PLL0[15120 8400 15360 0] PLL1[8571 168 460 4721] PLL2[0 0 0 0] GHSspd[16586.72] DHspd[19.446%] GHSmm[20621.20] GHSavg[10571.21] WU[147678.03] Freq[123.45] Led[0] MGHS[0.00 10571.21 0.00] MTmax[-273 74 -273] MTavg[0 61 0] TA[240] Core[A3201] PING[22] POWS[0] HASHS[0 0 1] POOLS[0] SoftOFF[0] ECHU[0 0 131073] ECMM[4] SF0[348 368 388 408] SF1[348 368 388 408] SF2[348 368 388 408] PVT_T0[-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -2<rest of post truncated>

### Reply 1:
Hi recently went immersion(bitcool liquid with no cooling fans) for first time with 3 new 1166 pro75th miners.1 of my miners show no sign of connection or hashing. but green light shown to be online. heres a copy of the <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':2,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1684936.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 2 ] Elapsed[242] <truncated> LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[50] TMax[50] TAvg[50] Fan1[0] Fan2[0] Fan3[0] Fan4[0] FanR[100%] Vo[1] PS[0 1207 5 0 0 1256] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[240] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[5] SF0[348 368 388 408] SF1[348 368 388 408] SF2[348 368 388 408] PVT_T0[-273 -273 -273 -273 -273 <rest of post truncated>

### Reply 2:
Only 2 hashboards detect according to the working status and Echu shows abnormal it could be overheating or connection issues between the hashboard and control board.Another thing is all fan shows 0rpm and the last thing is this HASHS[0 0 1] the 3rd hashboard seems bad.Can you try to replug all cables first and then test and if it doesn't work try to disconnect the 3rd hashboard and try to run again if the API logs are still the same then try to flash it with the latest firmware available from Canaan here <link> you have 3 of them and only this one unit does not work properly can you try to test the PSU from the working unit?

### Reply 3:
thanks a lot bitmaxz! ill try it and get back in touch.

### Reply 4:
Also PLEASE use the code tag # from the toolbar and perhaps edit the previous posts to use it...Makes for much easier reading Do you have a fan simulator to let the FW think there are fans running or have the FW fans monitoring turned off? Without either the miner will not hash.

### Reply 5:
well oh well. the second miner doing the same thing. my third therrahasing hard on 3 board and holding.i'm running on normal mode ip dynamic DHCP. will do what you told me tomorrow but do you see something i did'nt see on the second miner's log? :Miner <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':1,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1595680.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 2 ] Elapsed[97] <truncated> LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[37] TMax[37] TAvg[37] Fan1[0] Fan2[0] Fan3[0] Fan4[0] FanR[100%] Vo[362] PS[0 1217 1449 112 1630 1448] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[240] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[5] SF0[338 358 378 398] SF1[338 358 378 398] SF2[338 358<rest of post truncated>

### Reply 6:
im not using fan spoofers or did nothing to it. stock in coolant. 1 of 3 working very well this way! i dont get it!works well as long as internal temperature is not above 3<rest of thread truncated>
","[
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    ""hardware_name"": ""Avalon 1166 Pro 75th"",
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  },
  {
    ""hardware_name"": ""hashboard 01"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan simulator"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
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23297,"Date: 2020-06
Topic: My T15 stop working
### Original post:
My antminer T15 stop working, i already check all boards and the PSU and found no problems at all, it just don't power up.I remove all boards and leave only the PSU and the control board, same problem, no power up.I test the control board with other PSU (APW3+) and is working perfect.I open ther PSU, nothing burn, zero smell (i don't have the cov19 ok, hehe), everthing looks fine, i test the primary protections (varistors, thermistors, fuse, etc.) and evething looks fine, anyone have schematics? or any idea what happens with my PSU? it's the only one i have, is kinda sad after my T17 burn. I still need check other components like a relay i found in the primary, i guess is part of the protection, is hard to check anything in the primary, is all glued, weird part is that the secundary have no glue.It's a APW8.

### Reply 1:
It's almost impossible to fix PSUs from Bitmain unless it's an obvious easy fix, I am not an expert in dealing with all the PSU components but I took a few dead PSU to a friend who knows all about this stuff, and the conclusion I came up with (based on his thoughts) the way these PSUs were built is merely for one-time use, fixing them will consume more time and effort than what they actually worth, unless of course, you have all the skills, spare parts and nothing else to do that makes you money, in my friend's case he apparently could make a lot of money fixing other things that aren't glued and have no pinouts, so he nicely asked me not to waste his time. With that being said, it's worth saying that most PSUs that stopped working for me simply needed a fan replacement, did you confirm that two fans spin just fine? I know thierry4wd plays quite a bit with his PSUs, I hope he would chime in for more thoughts.

### Reply 2:
PSU failures are typically caused by either a failure in the fans (supply is smart enough to see the fan not spinning or shuts down quickly as the rail overheats), a blown fuse in the input/primary side (happens), or failures in the high-side FETs on the output rail. When one FET goes (they normally put a number of them in parallel and fire together or in an N phase sequence) it pretty much shuts down the whole supply.If you're technical, grab a meter and check the resistance of the power supply output leads with the supply off and completely disconnected from the three hashing boards. If it's zero then you have a FET short.Finding the shorted FET isn't too hard, but you do have to desolder then from the board and check each one. Sometimes a thermal camera can catch it but usually the supply crowbars too quickly. Unless the FET has exploded but a lot of times this doesn't happen. And here is where you find that the cost of paying someone to do this is probably greater than the cost of the supply and might not make sense with the current value of bitcoin, difficulty, etc.Bitmain knows this, and IMO some of the components they use tend to be a bit ""on the edge"". Makes sense if the go<rest of post truncated>

### Reply 3:
Take the example of an old school incandescent light bulb. make it with 1000 hour life you have an endless demand for new ones.So if have your area constantly lit up and that is very important you must have a few spare lightbulbs. Who cares light bulbs are cheap.In mining the new gear has constant use and built in psu'sIf you buy 5 s17 pro's or more you should make sure to have a spare psu for when the light bulb burns out.If you only have 1 t17 or 1 s17 or 1 t15 or 1 t17 it is hard to justify having a spare psu.At op I may have a source for a spare psu if you are USA based. I have a guy in North Carolina.He has been great with whatsminer m20s parts and I know he has Bitmain repair parts.<link> here<link> has supplied 2 p21 psus to me. and both of my m20s now work.he also got steamtyme the op of that thread fixed up.try him.

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    ""hardware_name"": ""control board"",
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    ""hardware_name"": ""APW3+"",
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  },
  {
    ""hardware_name"": ""APW8"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17"",
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    ""hardware_name"": ""s17 pro"",
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    ""hardware_name"": ""p21 psus"",
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    ""hardware_name"": ""m20s"",
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]"
24155,"Date: 2023-08
Topic: Need Help with diagnosing 3 S19's with possible PSU failure.
### Original post:
PLEASE use the code tag on that text wall to knock it down to scrollable box ... The icon for it is #

### Reply 1:
This is not a complete logs I guess and I think you already reach the character limit. I suggest use pastebin.com to paste the whole logs of your miner and share the URL here. Have you tried to do the basic guide from Bitmain? Try to follow the guide below if it didn't work it might temp sensor issue. I also one you to try run miner only one hashboard and test them one by one and then post the changes here.

### Reply 2:
Are the logs of the other 2 S19 the same? According to the log of this S19, I think it may be a problem with the PIC chip. The log indicates that no data can be read from the board. Or check to see if there is a short circuit.

### Reply 3:
sorry all I have fixed the box issue. Yes I have tried all the standard stuff, I wish this one was that simple. Machines were cleaned but they may need an ultrasonic bath, looks like the previous owner didn't treat em too well. They didnt skip a beat till this weekend though.

### Reply 4:
Hello all,Over the weekend I had an issue in my mine that lead to some high humidity. I have 3 S19's now that are ""on the fritz"" One machine wont hash on any board, one only see's one board, and one sees two. I am assuming the humidity killed/damaged the PSU's or in a stroke of insane badluck I managed to have a ton of dirty hashboards all happen at once. Here is a log from one machine that is only seeing two hashboards. I have other logs I can send/post as <truncated> <truncated> 00:00:09 Miner compile time: Tue Nov 16 19:20:40 CST 2021 type: Antminer S19 Pro1970-01-01 00:00:10 This is fix-freq version1970-01-01 00:00:10 Miner compile time: Tue Nov 16 19:20:40 CST 2021 type: Antminer S19 Pro1970-01-01 00:00:10 commit version: 386747fa 2021-10-21 19:58:45, build by: jenkins 2021-11-16 19:37:571970-01-01 00:00:10 opt_multi_version = 11970-01-01 00:00:10 opt_bitmain_ab = 11970-01-01 00:00:10 mid_auto_gen = 01970-01-01 00:00:10 <truncated> = 01970-01-01 00:00:10 mmap fpga_mem_addr_hal = <truncated> 00:00:10 HASH_ON_PLUG V9 = 0x71970-01-01 00:00:10 Note: front fan is power on!1970-01-01 00:00:10 Note: rear fan is power on!1970-01-01 00:00:10 start the http log.1970-01-01 00:00:10 <link<rest of post truncated>

### Reply 5:
The power supply can be turned on for testing by placing a 220-470 Ohm resistor into pin 3&4 of the 6 pin control cable.

### Reply 6:
check your PM's in regards to helping fix them

### Reply 7:
What do you mean they didn't skip a beat? Are the miner is now running fine?If you have a multimeter I'd like you to check the PIC chip on the hashboard if there is 3.3v supplying the PIC chip if there is no voltage or less there is a problem with other components not supplying enough power to your PIC chip. I hope that you have some repairing tools you can follow this guide below- <link> you don't have repairing tools then your last hope is to hire a technician you can check this <link> they do have a list of repair centers and maybe there is one near in your area.

### Reply 8:
I meant that they had 0 issues until this failure. I have a ton of s19's that have been rock solid.

### Reply 9:
hell there, did you manage to fix the miners? i have also 4 s19j pro and s19pros having same problem alll of sudden on a humid day when my internet disconnected for few hours and machines stopped mining and more moisture came in while their only fans were on. when i noticed i turned on the internet connection but the 3 s19 j pros didnt mine even after plenty of restart and cleaning and tried everything.here is the current log, it either show the init failed of temp too highPreemptible hierarchical RCU <truncated> adjustment of leaf fanout to 32.RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2.RCU: Adjusting geometry for rcu_fanout_leaf=32, <truncated> nr_irqs:16 16efuse mapped to cf800000ps7-slcr mapped to cf802000L2C: platform modifies aux control register: 0x72360000 -> 0x72760000L2C: DT/platform modifies aux control register: 0x72360000 -> 0x72760000L2C-310 erratum 769419 enabledL2C-310 enabling early BRESP for Cortex-A9L2C-310 full line of zeros enabled for Cortex-A9L2C-310 ID prefetch enabled, offset 1 linesL2C-310 dynamic clock gating enabled, standby mode enabledL2C-310 cache controller enabled, 8 ways, 512 kBL2C-310: CACHE_ID 0x410000c8, AUX_CTRL <truncated> clkc starts <rest of post truncated>

### Reply 10:
HeyDid you try both of the following solutions as per : Support Bitmain : s19pro fail to read pic temp for chain 0 ?Solution 1 (I guess that you already tried these steps ?) :Solution 2 :

### Reply 11:
If the suggestion above does not work then that's a hardware issue sometimes temp too high is due to a broken ASIC chip that needs to be replaced or a loose heatsink that needs to be attached properly. It needs a BGA HotAir blower to replace the c<rest of thread truncated>
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    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""PIC chip"",
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    ""hardware_name"": ""hashboard"",
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  },
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    ""hardware_name"": ""multimeter"",
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    ""hardware_name"": ""heatsink"",
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    ""hardware_name"": ""BGA HotAir blower"",
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22362,"Date: 2018-02
Topic: Need help with electricty
### Original post:
So I have:3 phase entrance240v lines125amp panel with some 20 amp breakers going to some plugsAvalons 741s15 amp 1600w power supply(Sorcerer's, from Canaan)7.8 amp 1400w server PSUWhen I set up a 741 using the sorcerer PSU, each line is reading around 6.3 amps(13 amps total), so pretty much in line with what you would expect from a 15amp PSU.When I set up a 741 using the server PSU and a breakout board(x7's from parallel) each line is reading close to 7 amps(14 amps total), meaning my server PSU which is rated at 7.8 amps @ 240v is pulling well above what is should be.What could be the issue with these? Is it possible there is an error with the actual wiring? Or is it more likely that there is a mistake with the labeling of the server PSUs and they are rated closer to 15amps @240v? Pulling my hair out trying to figure out what the issue is. Was expecting to double the number of Avalons im running by putting in these server PSUs which were suppose to draw 1/2 the amps of the Canaan ones. But they are actually drawing more and I feel like I'm going backwards. My electrician says the problem is the server PSUs must be labelled wrong. Just trying to get second, 3rd, 4th opinions on wha<rest of post truncated>

### Reply 1:
What are the hash rates in these two different situations?Sorcerer PSU, hash rate = ?1400W server PSU, hash rate = ?Either your AvalonMiner 741 was performing better with a higher hash rate when powered with the 1400W server power supply, or the server power supply has a lot worse power efficiency ratio than the Sorcerer PSU.

### Reply 2:
I'm going to guess its the difference in power supply efficiencies. 7 vs. 6.3 is only 11%, well within the range of that.

### Reply 3:
There are 2 hot lines for a 240v circuit. So a PSU rated at 7.8 amps @240v should be showing 3.7 or so on each line, not 7. The 6.3 seems correct for a PSU rated at 15 amps.

### Reply 4:
Looks like your psu has low voltage output that is why its only showing 3.7 amps instead of 7. Looks like the server psu is not compatible or the server psu you bought is only for gpu mining.. Maybe there is different voltage output or efficiency of the server psu is low.I suggest you to use psu that recommends by canaan which is sorcerer psu v1 or v2

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    ""hardware_name"": ""240v lines"",
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    ""hardware_name"": ""125amp panel"",
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    ""hardware_name"": ""20 amp breakers"",
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    ""hardware_name"": ""Avalons 741s"",
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    ""hardware_name"": ""7.8 amp 1400w server PSU"",
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    ""hardware_name"": ""breakout board (x7's from parallel)"",
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  },
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    ""hardware_name"": ""Sorcerer PSU"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""1400W server PSU"",
    ""hardware_is_owned"": false
  }
]"
22880,"Date: 2019-02
Topic: HELP! mount pool btc
### Original post:
Hi, I'm trying to create a private pool to mine (SOLO) on ubuntu. with btc sha256. can anybody help me?

### Reply 1:
I found these 2 guides :<link> not, I recommend asking in the correct section, it's true that this still fits in bitcoin technical support, but most of the miners & pool owners hang out here : <link>

### Reply 2:
This belongs in Mining Software, asked mods to move it there.Use CKpool, their thread is here

### Reply 3:
Hello, thanks for your help, you have followed a guide. (<link> now it's all ready and I'm synchronizing, but then I do not know how to continue.

",[]
23488,"Date: 2021-03
Topic: My miner Work only one chain..
### Original post:
ok sorryYes is a Love core Aisen A1 minerIt is already the case, I returned <truncated>

### Reply 1:
This miner doesn't have support they don't even have a website. I tried to search on Google but I can't find any information that can help to fix your issue.Anyway, can you try to reset it to the factory default you can do that by holding the IP report button or similar or use the reset button hold them for 15 or 20 seconds then releaseThen test it again after if not work and you can access the Web GUI try to factory reset there and try to run it again. If it still doesn't work you can try the firmware from this post below.- <link> don't know if this firmware will work in your miner and never heard someone succeed flashing their a1 miner by flashing it with that firmware(Be careful it might also brick your miner unless if you are ready for consequences).

### Reply 2:
Please edit your post and use code tags when posting kernel/sys log, like soCode:logs go hereIt appears that the other hash boards you have are simply dead. Since you mentioned that you have another similar miner, try to swap the PSU and the control board, if nothing changes then dead hash boards confirmed, if they work, we can troubleshoot further.

### Reply 3:
hello, I currently have 2 miner (A1).1: only works on 1 hashboard instead of 42: start but mine neverFor the moment i would like to make the one who walks a little walk. I tried to cross the hashboard feed wires and it's always the same hashboard that works.this is what happens at startup in the Cgminer log:Code:-- Logs begin at Sun 2018-01-28 23:58:17 CST, end at Fri 2021-03-19 21:46:00 CST. --Mar 19 21:15:56 rockchip systemd[1]: Starting Cgminer...Mar 19 21:15:56 rockchip systemd[1]: Started Cgminer.Mar 19 21:15:56 rockchip cgminer[262]: Started cgminer 4.10.0Mar 19 21:15:56 rockchip cgminer[262]: Loaded configuration file <truncated> 19 21:15:56 rockchip cgminer[262]: Probing for an alive poolMar 19 21:15:56 rockchip cgminer[262]: Failed to resolve (?wrong URL) <truncated> 19 21:15:56 rockchip cgminer[262]: Failed to resolve (?wrong URL) <truncated> 19 21:15:56 rockchip cgminer[262]: Failed to resolve (?wrong URL) <truncated> 19 21:15:56 rockchip cgminer[262]: Shutdown signal received.Mar 19 21:15:56 rockchip systemd[1]: Stopping Cgminer...Mar 19 21:15:56 rockchip cgminer[262]: Complie date : Aug 26 2019Mar 19 21:15:56 rockchip systemd[1]: Stopped Cgminer.Mar 19 21:15:56 rockchi<rest of post truncated>

### Reply 4:
Next time use the ""insert code button"" for your logs to make your thread clean.Anyway, is this a Love core Aisen A1 miner? I don't have much knowledge about this miner but this is what I noticed in your log:It seems that you didn't set the pool properlyCan you add this ""stratum+tcp://"" at the beginning of the URL looks like this <truncated> try to run it again.

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    ""hardware_name"": ""control board"",
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23916,"Date: 2022-04
Topic: Question about Temp
### Original post:
Hi,I have Antminer S11I want to know What is Normal Temp for that Miner?I get an screenshot from Miner Status:<link>

### Reply 1:
The link image does not work better upload it on imgur.comAbout the normal temp operation of this unit mostly Antminer unit normal temp should not be more than 80c to 85c but s11 according to Bitmain it around 95c PCB temp.Source: Miner normal operating temperature rangeIf the temp of your miner is more than the normal operating temp that hashboard will automatically shut down.

### Reply 2:
HiHere you are:<link>

### Reply 3:
That temp is related to ASIC chip, not the PCB temp.I think the ASIC chip temp should be around 110c more than that it will detect overheating and the hashboard will automatically shut down. The bitmain firmware itself has it's own temp protection it will only trigger when the temp touches 110c.

### Reply 4:
Thank you for your Reply.So 73.C is ok right!

### Reply 5:
Yes, it should be ok according to the bitmain temp range and based on my experience with the s9 unit.If your miner is mining normally without any problem you don't need to do anything to make your ASIC chip cooler than 73c. It's a normal range of most of the Bitmains miner.

### Reply 6:
Your miner's temps look perfectly fine to me, however, your fan readings don't make sense to me, I don't think Bitmain has ever made a fan that spins at 13k RPM, the maximum has always been sub 6k, so there is something weird going on here, it's likely the fans you use are not stock and they are reporting wrong numbers, that could be very dangers because while your temps are okay now, and assuming the fans are spinning at 100%, if the room temp becomes a lot hotter, you will face problems.The only way to tell if your miner is running at a good temp is by judging both the chip temps and the fan RPMs. You can ignore all of that if you are sure the room temp will not be any higher than it's today.

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23345,"Date: 2020-10
Topic: How the s19 PSU works
### Original post:
I'm new to bitcoin mining. I'm trying to understand the role of the PSU. My understanding is that there's a 15-20 amp current coming in from a 120V outlet and the role of the PSU is to increase the voltage to 240V. So there would be 15A * 120V = 1800 watts being drawn into the PSU and the output from the PSU would be 15A * 240V = 3600 watts which would give the s19 miner the appropriate wattage. Is my understanding correct? Does that mean the s19 PSU can be plugged into a 120V standard outlet?

### Reply 1:
No, the psu requires 200 to 240 ac input and outputs between 12 and 15 volts dc. It will not run on 120v.

### Reply 2:
you need 240 volts at 20 amps as the psu can do more then 3400 watts.the psu also directly communicates to the controller so you must use their psu. with their controller.So if you are buying 5 or more s19 or s19 pros consider buying a spare psu.S19 and s19 pro gear is not home friendly like a modded s9 can be.

### Reply 3:
The role of any Power Supply Unit is exactly what the name says: It supplies the power a device needs to operate. In this case, it takes incoming 200-240VAC line voltage and drops it to a controlled 12 to 15vdc. Exact voltage out is set by the controller and is determined through a process called auto-tune where the miner controller goes through several cycles of setting a voltage & testing how well the chips perform. When auto-tune is done the actual voltage used is whatever gave best performance during testing. As to how a PSU operates, that is an entirely different question and considering your followup question I highly suggest that you pickup a Basic Electricity 101 book such as any of these found on Amazon . That will at least get you on a safe start to understanding how electrical devices operate...

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    ""hardware_name"": ""s19 miner"",
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    ""hardware_name"": ""s19"",
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  },
  {
    ""hardware_name"": ""s19 pro"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""modded s9"",
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]"
23118,"Date: 2019-10
Topic: Aladdin Miner T1
### Original post:
hiI have Aladdin Miner T1 and I cant connect to with Ethernet LAN cable and it cant get IPI want to recovery control board with SD card.Someone can help me

### Reply 1:
I am pretty sure Aladdin don't manufacture their own ASICs, which means you should be looking for the recovery files of the real brand they use which I think is Inno, it's very very unlikely that you will find anyone here who has that miner or even heard of it.Your best shot would be contacting the seller and asking for the recover method/files , if they don't have those available ask them what type of control board they actually use, and then look for the recovery files which work for that particular model, if the seller does not respond, send me a PM and I will ask one of my Chinese suppliers, saw her post some Aladdin miner's for sale the other day, so I assume she would know something about these gears.

### Reply 2:
I'm so sorry, The seller doesn't send me files or methods for recovery control board for T1 Aladdin miner.Please help me.Thanks.

### Reply 3:
I contacted the seller , she does not have the recovery files for Aladdin Miner T1, but I knew something interesting, this miner is actually a combination of two DragonMint T1 16TH gears, and I assume it has a single control board + a doubt sized PSU , and gets sold under the name Aladdin, which means using the recovery files from DragonMint T1 should do the trick.also you can use BraiinOS as per this post <link> please, do this at your own risk , I am only trying to help as much as I possibly can.

### Reply 4:
Can you check the control board model name and post it here and maybe I can find some SD card images that you can use to flash the miner through SD card.Take note if it still under warranty much better to don't touch it and contact the support to send it back for repair.Can you try this if you can find the reset hole or button or IP search/Reporter in the front of the miner near ethernet do this below. - Hold reset/IP reporter/search for 15-20 sec- Then release - if you notice that the miner reboot let it run for 5 minutes and check it again if you can find the IP use tools like Angry IP scanner.If it doesn't work well your final solution is to flash it through SD card.

### Reply 5:
There is noway he is getting any type of warranty from a fake manufacturer that does not exist, they don't even own a 10$ website, so i am willing to bet that he needs to fix the gear by himself.if you have the recovery files for DragonMint T1 16TH send it to him , that is all he needs, I have confirmed that Aladdin T1 is simply 2*DragonMint T1 16TH with a larger PSU.

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  },
  {
    ""hardware_name"": ""ASICs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DragonMint T1 16TH"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  }
]"
22956,"Date: 2019-05
Topic: How to clone antminers without changing every pool in each miner
### Original post:
Hello,Does anyone know how to clone antminers. I need to setup 1300 antminers and I would like to know how to clone the pool configurations of all the miners at the same time without having to go into each miners ip address and changing the pool configurings.Big thanks,

### Reply 1:
Can you still hook up one control computer to three of those machines in order to reduce it to about 500 instead.I'm guessing you can try cloning the sd cards to see if everything can be transferred but its handy to make them individual workers so you know if one has gone down or not.

### Reply 2:
The pool details and other settings are stored in <truncated> You can use a program like WinSCP to connect to a miner that you've configured in order to download the bmminer.conf from there.Once you've done that, you can use SCP along with some automatic tool like sshpass in order to upload the bmminer.conf to all of the other miners

### Reply 3:
Or you can use a paid software to manage all miners and bulk edit the pool at once. List of software to manage more than 2 miners.- Awesome miner official thread here <link> Minerstat official thread here <link>

### Reply 4:
Run a few proxies, then you just change the proxy settings.

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control computer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sd cards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""WinSCP"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bmminer.conf"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""proxies"",
    ""hardware_is_owned"": false
  }
]"
22331,"Date: 2018-02
Topic: AVALON 6 CURRENTLY
### Original post:
FINALLY, I got my A6 running, with alot of help from many forum members.BUT I have 1 bad hash board (other ones fine) anyone know where I can buy one? or does someone have one laying around? OR someone know who can repair it?I put alot of time and energy into this thing I just wanna see her run LOLThanks

### Reply 1:
The fact that parts are so hard to find makes me very scared to buy an Avalon 7

### Reply 2:
The manufacturers normally only sell replacement accessories and not the actual hashboards themselves. You are now asking about parts for an out of production last generation miner. You will probably have to do a little more than throw up a single post on a forum to find the parts you need.

### Reply 3:
I contacted all the trusted people about it.any suggestions?

### Reply 4:
THE six has no new parts.all you can do is buy old ones and piece it together.

### Reply 5:
guess I'll hunt for a decent deal on one.maybe someone here??

### Reply 6:
$299 is a pretty good price (compared to eBay) at miner-warez: <link>

### Reply 7:
for sure not bad, just wont wanna rip a new one apart lolanyone repair these boards?

### Reply 8:
You could ask lightfoot if he is interested in fixing it.

### Reply 9:
I actually just did that @lightfoot

### Reply 10:
meantime a dumb question.the Pi nor settings etc can make only 1 board hash right??

### Reply 11:
You could check the power to the other board - make sure your cables are good. But there's no way (that I know of) to disable a board in the controller.

### Reply 12:
I have tried 3 different PSU's lolok cool thats what I needed to know.

### Reply 13:
Under the advanced version of the Avalon dashboard it will give you error codes so you can diagnose the board problem.

### Reply 14:
hmmm I'm gonna check into that one.that way maybe we can see whats exactly wrong.you know where that is in advanced?

### Reply 15:
Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005001] Brought up 4 CPUsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005091] SMP: Total of 4 processors activated (153.60 BogoMIPS).Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005117] CPU: All CPU(s) started in HYP mode.Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005141] CPU: Virtualization extensions available.Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.013151] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.013464] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 nsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.014134] pinctrl core: initialized pinctrl subsystemFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.014620] NET: Registered protocol family 16Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.019592] DMA: preallocated 4096 KiB pool for atomic coherent allocationsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.049950] cpuidle: using governor ladderFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.079969] cpuidle: using governor menuFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.085032] Serial: AMBA PL011 UART dr<rest of post truncated>

### Reply 16:
anyone know how to read that?whats it mean lol

### Reply 17:
this is the system log, nothing related to the boards here.try posting CGMINER API Log here

### Reply 18:
Does anyone know where i could buy the internal controller for a Avalon 6?Had 1 broken board but with testing i fried the controller too...If i'm able to get the good board hashing i''ll sell it to ya

### Reply 19:
!!! Good God man !!! Learn to use the Code function here! Looks like # Using it your text wall of a log becomesCode:Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005001] Brought up 4 CPUsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005091] SMP: Total of 4 processors activated (153.60 BogoMIPS).Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005117] CPU: All CPU(s) started in HYP mode.Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.005141] CPU: Virtualization extensions available.Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.013151] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.013464] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 nsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.014134] pinctrl core: initialized pinctrl subsystemFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.014620] NET: Registered protocol family 16Fri Oct 27 23:45:50 2017 kern.info kernel: [ 0.019592] DMA: preallocated 4096 KiB pool for atomic coherent allocationsFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.049950] cpuidle: using governor ladderFri Oct 27 23:45:50 2017 kern.info kernel: [ 0.0<rest of post truncated>

### Reply 20:
The Daughter Board?

### Reply 21:
AKA MCU?

### Reply 22:
Yeah that one.But never mind, another one burned, got to see if i can build one out of 2 defect ones.

### Reply 23:
Hi! Just fo<rest of thread truncated>
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    ""hardware_name"": ""A6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""replacement accessories"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""internal controller for Avalon 6"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Daughter Board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MCU"",
    ""hardware_is_owned"": false
  }
]"
22682,"Date: 2018-07
Topic: recommend me a good anticorrosion protection for hashboards
### Original post:
hello, would like to know a good anti corrosion/rust to apply to my hashboardsi saw somewhere a guy apliying something like silicone to his hashboards to protect them, what is this silicone called?

### Reply 1:
Not necessarily silicone. The product is called a conformal coating and can be silicon, acrylic, or urethane based. A company called TechSpray is one maker of it. If you need to use it a better solution is to eliminate the root cause - humidity. Sealing a board more than they already are is just a band-aid.If you do get some DO NOT get any on the heatsinks as it will greatly reduce their ability to transfer heat to the air.

","[
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    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heatsinks"",
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  }
]"
16318,"Date: 2022-08
Topic: How would you spend $50k-$60k for mining?
### Original post:
Purely Interested in what ASICS people would buy and why. Lets say its based on mining on a 3 Phase supply. Would it be all bitmain s19s & L7s? Or would you mix it up with Goldshell for KDA and maybe take a risk on E9 for ETC?

### Reply 1:
3-phase supply is *mostly* irrelevant as all miners use single phase power. Where 3-phase does come into play is if you use phase-to-neutral connections for breaking out the power, you MUST ensure the resulting voltage is between 208-240VAC and in most countries your phase-to-neutral voltage will either be too high or too low.

### Reply 2:
Well this is btc only and people frown on discussing other coins in this section.But I havebtc asicsltc/doge asicsgpusI constantly <truncated> attempt to balance risks that way.I make less money this way. ie going all in on the right gear at the right time will earn more money than my way.but I lose less when shit happens. ie going all in on the wrong gear at the wrong time can be crushing.

### Reply 3:
NotFuzzyWarm answered you about that, and I remembered you asked about your electrical setup and you're fixated on these issues when the main question is obviously the same, how much per kWh and how much can you really pull out at that price?Seeing you're from UK, and knowing you want to mine from your own garage so it's probably residential rates, are you sure about this? I have (not sure for long) still single digits rates and I wouldn't throw a penny at gear now.

","[
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    ""hardware_name"": ""bitmain s19s"",
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  {
    ""hardware_name"": ""L7s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Goldshell"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""E9"",
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    ""hardware_name"": ""btc asics"",
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  {
    ""hardware_name"": ""ltc/doge asics"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""gpus"",
    ""hardware_is_owned"": true
  }
]"
22469,"Date: 2018-03
Topic: S9 Failures, bitmain rma did not solve, found no resoultion in forums.
### Original post:
I bought 4 new S9's brought them to my little warehouse and got them up and running. They hash for about 30 minutes to sometimes 12 hours and then they just completely stop hashing. They just show 0 hash rate eventually, at miner and at pools. I am in China, everything is 240v.I am using bitmain PSUs.Warehouse has more then ample cooling and temps hold steady in the 70s.Each miner is running on its own 16amp circuit.I have 3 older S9s working fine on the same network.I have 30 other random miners on the same network working with out issue as well.Since I am in China I shipped them back to bitmain who sent them right back saying they tested fine. I still had the same issue. What I have tried:I flashed them to the latest firmware with no change.I paid for a second Internet connection and split all my rigs up thinking maybe I had a bandwidth issue but same problem with the same miners. I swapped them out to 3 different network switches.I swapped them out with other known working bitmain power supplies. (all i have are bitmain brand)I changed them to other cat 6 cables I was not having trouble with.I split them up on completely separate power meters. (I have 4 separate powerlines and m<rest of post truncated>

### Reply 1:
Are the miners DHCP or static?

### Reply 2:
All my rigs IPs are static.

### Reply 3:
Have you tried a different pool? Or different address for your existing pool? It really sounds like you're losing the network connection to the pool you have in there now. Is your internet connection metered?Also, the web interface has some simple network diagnostics, you might try to run those the next time the miners stop hashing.

### Reply 4:
I have tried several pools. Some located here in China and some in other parts of the world. I had almost no latency with F2pool and thought that would fix the issue but changed nothing. My connection is not metered but this is China and internet traffic is controlled by law at the ISP level. They firewall most of the world turning your internet into more of a intranet. I also think it might be networking. That is why I was thinking of trying a new ISP. However, why does it only cause trouble with the new S9's. Even if I turn a bunch of other miners off. For a while I had all my miners on one internet service. Then I got the S9s and thought it was a bandwidth issue and split them up on 2 separate lines. Then still had the same trouble with the same miners. I can run 30 other miners on this network but not those specific S9's regardless of pool. The only pool I did not try was Bitmains.

### Reply 5:
Also, just ran diagnostics on the current pool I am using. The ping was only 26ms, trace route says Ajax error, nslookup also had positive address lookup results. So.. Ajax error, not sure what that tells me.

### Reply 6:
So I think I have gotten to the bottom of my problems.I plugged in a few more machines today and heard my massive ventilation fans bog down. I unplugged a few S9s and heard the fans pick back up. I repeated similar tests like this.I am pretty sure that the City is not supplying me with enough power to run my operation... This makes sense since I melted their power lines last year outside and they had to replace them. They have a weak link somewhere so I can not get the full 300amps I need to keep running all my machines.

### Reply 7:
Ahhhhh yeah, that makes sense.

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  },
  {
    ""hardware_name"": ""bitmain PSUs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network switches"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cat 6 cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power meters"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""ventilation fans"",
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]"
10970,"Date: 2021-07
Topic: Official FutureBit Apollo BTC -- Hitting a block??
### Original post:
If someone is mining on the Apollo BTC node and by some miracle they (or you) find a block - are they (or you) rewarded somehow? Does the node software on the Apollo somehow reward the finder?

### Reply 1:
No the node is just part of the bitcoin network and helps secure it.

### Reply 2:
What's the point of anyone mining from a FutureBit node if there is no reward? What purpose is there to secure something you aren't rewarded for? Why waste electricity, time, bandwidth, hassles for just a good feeling? Didn't think so - that's why I just use it as a SHA256 miner - dump the node.

### Reply 3:
If everyone thought like this we'd have nothing to mine

### Reply 4:
If all nodes gave no rewards no one would be mining. Doubt if anyone connected to a FutureBit BTC node realize they're wasting their energy and time because they'll get nothing.

","[
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    ""hardware_name"": ""Apollo BTC node"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FutureBit node"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SHA256 miner"",
    ""hardware_is_owned"": true
  }
]"
11193,"Date: 2022-08
Topic: Whatsminer M21S firmware (unable to upgrade)
### Original post:
I attempted to download the latest Whatsminer M21S firmware from the following page and upgrade with the <truncated> devices came with the following version on them: 20210322.22.RELWhen flashing the WhatsMinerTool says successful, but we have no luck.If anyone has any idea why this is happening or any other firmware files that I could try this would be great.Additionally, if anyone has any clue how to SSH into one of these that would be great as well.

### Reply 1:
Sadly the link to your firmware is dead, so I don't know if you have the correct firmware installed. It is stated in the latest firmware <truncated> on the Whatsminer website that if the miner firmware is before 2021, it is recommended to upgrade the firmware after swiping the SD card.

### Reply 2:
Have you tried to check when was this thread created? As you can see it was created last year that is why the link you are trying to access is dead but anytime you can go to their new link- <link> that firmware .bin file doesn't need an SD card when flashing you need a tool called whatsminer tool or you can directly upgrade it through the browser.

","[
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    ""hardware_name"": ""SD card"",
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  },
  {
    ""hardware_name"": ""whatsminer tool"",
    ""hardware_is_owned"": false
  }
]"
22391,"Date: 2018-02
Topic: Help using two antminers s9 with one controller board
### Original post:
Hi Guys, this is my problem: I have one antminer S9 that doesn't start up when plugged in (the machine worked fine for 2 months), the only thing that works when plugged in is the fans, all controller board lights and hashboards lights are off, I tried replacing the PSU and it didn't work. I think that the controller board is damaged and that is the cause of the problem. My question is, can I use one controller board of a working S9 to run the hashboards of both machines, can I run two antminers S9 with only one board controller???

### Reply 1:
It might work but it would be tricky. One issue would be controlling and monitoring the fans. Another issue would be cables, connections to the controller, and whether or not the controller and firmware would cooperate. An easier fix would be to just buy a replacement controller, they seem to be abundant online.

### Reply 2:
My recommendation: Swap the hashboards (or hash cards) and isolate the problem.If your at 2 months, your still under warranty. If you can prove its a controller, Bitmain will send you a new one.

### Reply 3:
No you cannot control 6 boards with one controller without some hacked firmware that im not sure exists.

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  },
  {
    ""hardware_name"": ""controller board"",
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  },
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    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""replacement controller"",
    ""hardware_is_owned"": false
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]"
23212,"Date: 2020-02
Topic: S17 : WARN: chain[1] - 0 of 48 chips detected
### Original post:
hello,bought used and got this on kernel <truncated> 23:20:42] INFO: Starting FPGA queue[2020/02/20 23:20:42] INFO: Initializing <truncated> 23:20:43] INFO: chain[0] - <truncated> 23:20:55] INFO: chain[0] - 48 chips detected[2020/02/20 23:20:58] INFO: chain[1] - <truncated> 23:21:10] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:11] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:12] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:12] WARN: chain[1] - 0 of 48 chips detected[2020/02/20 23:21:22] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:23] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:24] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:24] WARN: chain[1] - 0 of 48 chips detected[2020/02/20 23:21:33] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:34] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23:21:35] ERROR: src/chip139x.c:957 chain[1] - Failed to receive chip replies[2020/02/20 23<rest of post truncated>

### Reply 1:
First of all, always code the kernel log by using the hash/number sign in the <truncated> 23:21:35] ERROR: <truncated> chain[1] - Failed to detect ASIC chipsThe error is quite clear, the board is bad, sadly!To break it down, there is at least a 90% chance that this board is dead and will no longer function, however very seldom there might be other reasons for the kernel to through this error.A faulty PSU or a bad connection to the control board, you need to first check the ribbon cable that goes from the control board to hash board number 1, it might be loose, however, the best practice would be swapping the cable with a working one, ribbon to board 2 goes to board 1, and vice versa, and the same thing with the PSU, you need to switch the hash board positions.Expected results:1-The miner now finds 48 chips on chain 1 and 0 on chips on chain 2 (The hash board is dead)2-The miner now finds 0 chips on chain 2 and 48 chips on chain 1 (Ribbon cable/Psu connection is faulty)very seldom this error might come from a bad firmware, a hard reset might (chances are slim) fix your issue, you should also post the complete kernel log so we know if the other boards work fine. If all boards are bad<rest of post truncated>

### Reply 2:
remember the s17 has been out for about 10 months.and it sounds like yours was overclocked since you mention aftermarket firmware.so there is a very good chance you got two out of three. chain 1 is a middle board012middle burns tend to die faster since the center board always gets less wind from the fans du to the fan having a center hub.try for a return.if not try for a 40% refund and be willing to settle for a 33% refund.

### Reply 3:
At 33% it means he bought only 3 hashbaords without a PSU, Control Board, Frame, 4 fans, etc. I think the best he could hope for is 25% assuming every hash board makes 25% (75% in total) and the rest of the components make the remaining 25%.If the seller is honest and nice enough, they would give them more than that considering the downtime and the efforts in troubleshooting, but I don't see that happening because if the seller was honest they would have tested the machine before sending it out.

### Reply 4:
Did you test to run it at low power mode? Maybe the chain 1 can't run at the higher power that is why it's not showing and getting zero chips from awesomeminer.How about revert it back to the original firmware and test it with low power mode instead? A quick test will tell us if the middle hashboard is totally dead or if it can still run at low power mode.In case you don't know where you can find the low power mode you can find it under Miner's Configuration tab on the WebGUI.

### Reply 5:
i checked all cables now and reseat them...the miner was at bitmain allready and look for yourself how they repaircable ties?! are the original cables from the fans not long enough?<link> screws<link> all boards are showing up with all asics, but next problem is, that in normal mode the miner dont find temp sensor and if he did the temps are 100 degree and more in normal modein power save mode<link> hw errors are also...i dont know...way to highi dont wanna blame the seller...its a nice guy and i believe he was also suprised with this problems i have. but yes...if it need long time to get a repair i will have to talk seriously about refund :/

### Reply 6:
what makes you think this miner was repaired by bitmain?i have seen bitmain use fan wire extensionsand cable tie tight is a good idea since gear vibratesnot sure the missing screw photo is correct.but all my gear is 70 miles from here so i cant check that.also i cant see your third image. what are too many hardware e<rest of thread truncated>
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    ""hardware_name"": ""ASIC chips"",
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    ""hardware_name"": ""frame"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""awesomeminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""temp sensor"",
    ""hardware_is_owned"": true
  }
]"
23736,"Date: 2021-10
Topic: Avalon 851 sockets melting
### Original post:
HiI've had an issue a couple of times where my Avalon 851 devices atx sockets and 12 volt power cables melt and I had to resolder new sockets. I want to know why this happens and how to prevent it. it didn't happen to one device twice it was different devices each time and after soldering new sockets everything was back to normal.

### Reply 1:
It happens from 2 things:Too many plug/unplug cycles, even the best available pins for PCIe plugs are only rated for 25 cycles. El-Cheapo's as few as 5 cycles and whatever plating was on the pins is gone. Once the plating is damaged things go down hill very quickly. If the miner or PSU are used, who knows how many times the plugs have been cycled...Using aluminum or too thin wire for the PCIe cables. The wire itself is part of what removes heat from the connectors. If it's only 18ga then the pins WILL become warm, the plating will begin to oxidize and eventually fail.

### Reply 2:
Thank you for the concise explanation. So new pins and better wires should prevent this from happening.I thought maybe it's a hardware glitch or done type of malfunction from power supply or pmu.

### Reply 3:
Ja. look for pins that are either silver plated (good for higher current, up to 5A per-pin and are 'slippery' usually good for the 25-cycles rating) or gold-flashed (almost as good but rated for fewer plug/unplug cycles) and 16ga copper wires.Also a good reminder for folks out there: If you are using 2 PSU's to give the required power (the 851 is something like 1.8kw) each PSU can only feed 1 side of the miner! All the PCIe sockets on each side are tied together and if different PSU's are plugged into the same side they will literally fight each other to be the one doing the voltage <truncated> the most power and the result is not pretty...

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  },
  {
    ""hardware_name"": ""atx sockets"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""12 volt power cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCIe plugs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""pins"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wires"",
    ""hardware_is_owned"": false
  }
]"
23456,"Date: 2021-02
Topic: S17 Pro no longer hashing.  Bad ASICs ?
### Original post:
My S17 has stopped hashing. Neither the Red Fault light or the Green Normal, light are on.It just keeps cycling through the messages below. Is this repairable? Any suggestions?Here's the Kernel Log:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order:<rest of post truncated>

### Reply 1:
i am looking at it.unplug it let it sit.lets play 20 questions.did you ever use any firmware other then bitmain.what setting is it on low normal turbo.is it the s17pro 50th 53th 56thdo not use a different firmware but if you have always had bitmain firmware which one are you using?do not upgrade the bitmain firmware just tell which one you have.

### Reply 2:
yeah i think he killed psu.if he killed the psu it will be hard to get one.as bitmain stopped selling them. or any other gear.Op are you usa based?i may have a source for psu.first listen to mikeyset to lowcheck all power plugs to psumake sure you have 210-240 power.

### Reply 3:
No.Turbo.I dont recall. How can I find out?Kernel Version: Linux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018Hardware Version: 17.10.1.3

### Reply 4:
This >Code:2020-08-03 00:03:07 <truncated> Chain[0]: find 0 asic, times 2Code:2020-08-03 00:03:37 <truncated> Chain[1]: find 0 asic, times 2Code:2020-08-03 00:03:48 <truncated> Chain[2]: find 0 asic, times 0In plain English implies that the contorl board isn't sensing/seeing any asics on all 3 hash boards, now if it was only on a single chain I would say it's a taosted chain, but what are the chances of 3 hash boards going down at the same time? I would say slim to nothing which leads me to think that this has to be a POWER related issue.- Your feeding the PSU with a higher/lower AC voltage that it can handle, so you need to tell us what is the voltageor- Your PSU has gone bad and needs replacement, but before you do that, give it a good dusting and set the miner on ""low"" settings, the results that come out of this troubleshooting will probably lead us to know what the problem actually is.

### Reply 5:
Heres the log after switching to Low Power mode. Also, maybe it was there before, but I didnt notice it, but this time the Miner Status was temporarily displayed. See the screenshots at the <truncated> hash table entries: 1024 (order: 0, 4096 bytes)CPU: Testing write buffer coherency: okCPU0: thread -1, cpu 0, socket 0, mpidr 80000000Setting up static identity map for 0x100000 - 0x100058CPU1: failed to boot: -1Brought up 1 CPUsSMP: Total of 1 processors activated (666.66 BogoMIPS).CPU: All CPU(s) started in SVC mode.devtmpfs: initializedVFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 nspinctrl core: initialized pinctrl subsystemNET: Registered protocol family 16DMA: preallocated 256 KiB pool for atomic coherent allocationscpuidle: using governor menuhw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint <truncated> maximum watchpoint size is 4 bytes.zynq-ocm f800c000.ps7-ocmc: ZYNQ OCM pool: 256 KiB @ 0xcf880000vgaarb: loadedSCSI subsystem initializedusbcore: registered new interface driver usbfsusbcore: registered new interface driver hubusbcore: registere<rest of post truncated>

### Reply 6:
@philipma1957 Was it you that said somewhere you have a repair contact in NC somewhere? I got and S17+ for almost free with my Bitmain credit just prior to the virus. One board isnt reading (temp sensor error). I created a DOA repair ticket with Bitmain, and they wanted me to ship it to Asia for repair because CA faculty was closed due to virus. The agreed to honor my request to wait for CA to re-open..... but..... I'm still waiting. It's running fine on two boards, but was wonder what kind of costs i might incur to ship to NC dude for repair. Might even be able to hand deliver... I have several friends from here in PA who work down there, and they go back n forth often.

### Reply 7:
I do. I need to look at <rest of thread truncated>
","[
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  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": true
  }
]"
10713,"Date: 2018-03
Topic: Blue Fury Miners V2 2.6Gh/s
### Original post:
Blue Fury? What's the difference between Blue Fury and Red Fury? Edit: Never mind, I see they have a blue LED now. Blue sucks. I'd prefer red, I've enough blue LEDs to cover up, so they don't light up the whole upstairs of the house...

### Reply 1:
No Canadian reseller eh? Was thinking about picking one up for shits and giggles but would prefer to support local reseller and have domestic shipping.Anyway no biggie good luck to BPMC with this and future projects!

### Reply 2:
Old skool red LEDs rule!I remember in the 90's when blue LEDs first started to emerge, and they cost like 40x that of the red LEDs. Hard to imagine now, but back then they were the coolest thing. Now they are everywhere, and I want red back.

### Reply 3:
Huh, I now read it as Blue PCB and Red LED. I'm sure it said Blue LED earlier...

### Reply 4:
Yes it did. I was confused with what the EE told me. Didn't realise it was just a blue pcb change.

### Reply 5:
it did, haha! Id love to get a few of these, but the price needs to be slightly lower i think, more in line with ~0.65 BTC for orders of 10+

### Reply 6:
I would be happy to handle Canada distro... cept im in the US I guess I am going to help out canada! Ill setup the GB.

### Reply 7:
Beastlymac will you be imposing rules/restrictions to your authorized resellers (much like ASICMiner did with their products) to regulate and control the distribution so it doesn't get chaotic?

### Reply 8:
Black light?

### Reply 9:
fixed

### Reply 10:
they look sweet reserved

### Reply 11:
Want!

### Reply 12:
Check out the group buys depending on where you live.

### Reply 13:
Can't find the links to the us buys, i must be blind or buzzed. Could you link?

### Reply 14:
Almost $42 per GH. Yikes.

### Reply 15:
What is the warranty on these?

### Reply 16:
All items that are DOA will be replaced.

### Reply 17:
Hi all!!!!Sorry, but I have a question. USB RED/BLUE FURY only work in Linux. Is it possible run in Windows as old USB erupted withlast version of CGMINER?.Thanks you in advanced. Antuam

### Reply 18:
No, a updated cgminer version is currently in development.

### Reply 19:
Thanks Beastlymac. I hope than ckolivas finish the developer ASAP.Other question, Do I need to install some driver for windows or only plug the USB and run CGMINER? Have a good day and sorry for my English. Antuam

### Reply 20:
Where do you ship from? The shipping price to canada you just gave me seems <truncated> Express Courier (1-5 working days) - Tracked, Signature required $426.74 International Economy Courier (2-6 working days) - Tracked, Signature required $290.02

### Reply 21:
Is that correct that these new USB Devices use the Same power as the original BE's?

### Reply 22:
Shipping is from New Zealand. I expect the shipping to be considerably less than that quote.Yes that is correct.Sorry I didn't see the reply. I think you will need to install a driver and then it will be plug and play.Also I have updated the op.

### Reply 23:
Hi,Are working to support Bitminter, cgminer. But, now is possible run the USB RedFury with Minepeon/Bfgminer? Or we need to wait a new updated of Minepeon? SupposeI have worked 9 USB block erupter with Rsapberry/minepeon, and need updated minepeon with bitfury, or virtual machine with Ubuntu, supposeThanks for all

### Reply 24:
We are working with DrHaribo on bitminter support. I have talked with Neil about minepeon support. Once official cgminer or official bfgminer support is public he will incorporate it with minepeon get me to test for bugs and after I give the ok then he will release it.

### Reply 25:
OK, Beastlymac, very friendlyHopefully before receiving the USB RedFury, jejejejeMore comfortable for allThanks and regards

### Reply 26:
Yes I expect it will be ready for me to test in the next week.

### Reply 27:
When do you think the next US group buy will be available for these? I'd like to purchase one, but I simply can't afford buying 20 xD.

### Reply 28:
I am the 3rd reseller of these. I'll be announcing a group by shortly. We already have them ordered and 0 allocated to customers. Expect an announcement soon with competitive pricing.

### Reply 29:
Hmm.. Where are you located? I'm thinking about setting up my own group buy, just because I'm bored and I want to give people as close to the original price as possible(I don't care about profit).Just as long as I don't end up paying extra including their shipping.I'm currently setting up a simple site for this! (including an autorefreshing counter).I don't know why I'm so amped to do this :C.

### Reply 30:
I'd like to thank Bobsag3 for arranging the Canadian orders.As it stands there are confirmed (paid) orders for 15 units. 5 of which are mine.However, if this GB doesn't reach 100 by next Friday the orders are being refunded. Fair enough.If this fails, how are Canadians supposed to be able to buy your product? There seems to be some fear about shippin<rest of thread truncated>
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  {
    ""hardware_name"": ""Red Fury"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB RED/BLUE FURY"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB block erupter"",
    ""hardware_is_owned"": true
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22927,"Date: 2019-04
Topic: Dragonmint T1 miner update
### Original post:
hi, I was just wondering if I could upgrade the dragon miner to cgminer4.11.1 because I have noticed mine is running on 4.10.0 even with the latest update?Does this matter ?can someone expand on this for me ?

### Reply 1:
You can upgrade it if there is a new available firmware update for Dragonmint t1 but if you are planning to upgrade only with Cgminer I think there is no method that you can manually upgrade it. The Cgminer version is depends on the miner's firmware version.No, it doesn't matter you can still mine with your current cgminer version.No, According to the quoted below I don't think if halong still active and I'm sure they don't have plan to release a new firmware for t1.Read this below:If you having some issue with your current version the only solution you may need for now is to switch to other firmware like Braiin OS.

","[
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    ""hardware_name"": ""Dragonmint T1 miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cgminer4.11.1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cgminer4.10.0"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Braiin OS"",
    ""hardware_is_owned"": false
  }
]"
23535,"Date: 2021-04
Topic: can't sd flash S9 with Hiveon on it
### Original post:
Hello,Just got me an S9 with hiveon on it. I want to flash the original bitmain fw on it using an SD but somehow it's impossible.when I unplug the hashboards and fans, or as soon as I unplug 1 of the boards, the control board doesn't turn on for some reason.I tried finding the option to turn off the hardware security, but can't find it anywhere.Who can help me out?

### Reply 1:
What do you mean it's not turning on?No lights at all with PSU?How about the JP4 did you change the position?The SD card firmware t9+ should work.If not try other SD card firmware like awesomeminer firmware you can find it from here <link> the installation guide here <link> this one who flash SD card firmware from Hiveon firmware - <link> might get some ideas there

### Reply 2:
That's because you don't flash firmware using an SD, you flash recovery files that would wipe out hiveon and then you flash the firmware version you want, please go to this website <link> and download ""t9+ -SD Tools.zip"", unzip it into an Sdcard and make sure you change the jumper on the control board, all instructions can be found here <link>

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""JP4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card firmware t9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""awesomeminer firmware"",
    ""hardware_is_owned"": false
  }
]"
22667,"Date: 2018-07
Topic: Overclocking of Antminer S9 with Liquid Cooling
### Original post:
Hi,We have made liquid cooling box for Antminer S9 13,5 TH (autotune freq) and get max temp on chips for 51 C. And we want to try to overclock this model by freq and voltage settings.Are there ways to unblock Frequency and Voltage settings for this model? (Old Firmware for example?)

### Reply 1:
If you have a newer batch, the older firmware will not work. Overclocking is a very bad idea anyway. By your post focusing on temperatures I dont think you quite understand what an overclock will do to the gear. Temps have little to do with anything when you are trying to put more power through a set of components that it was designed to handle.

### Reply 2:
Don't the S9's autotune? Will they not autotune above their ""max"" rate even if the chips are kept very cold?Overclocking the freq would be one thing. This should be OK and should not damage a chip directly. It should only damage it via heat. If the chip is kept cool it should be safe to run until the error rate starts to climb.Overvoltage on this I don't think I'd recommend unless the voltage is out of specification.I've overclocked Intel, AMD, NVidia, and ATI chipsets for over a decade now both as a professional and a hobbyist.Intel does not issue lifespan guidance based on freq. They issue it based on heat and voltage. The only reason you can get away with overvolting a CPU is because most are under-volted from the factory to meet production yields, meet heat design specs, and save electricity. I suspect these ASIC chips are already set at their design voltage due to their application. I can get my S7's to 770mhz with cold enough air. 5.2TH/s+ per box @ 1700W @ 0.03% error if I keep the reported chip temps at 55C or below.Slushpool reports 4.9TH/s per box 1hr scoring rate @ 700mhz stock freq right now vs 4.73 advertised @ 50C average temp. 0.0130% error rate. 8819 errors for 68,3<rest of post truncated>

### Reply 3:
We achieved stable 750 Mh/s with L3+ overvolting and freq settings, and we want to test S9 model, thatswhy we are looking for ways to overvolt S9 too.

### Reply 4:
Hello everyone !!!for overclock the S9 (tested on the version AntminerS9 14./sFirst ""up or downgrade"" the AntminerS9 version to BMminer v.2.0.0 <truncated> <link> that the version installed is, normal login on the miner (Miner has a new IP)than you go then ""Miner Configuratoin"" you have the option to choose the fixed frequency range of 550-650to choose a different frequency, You must change the address in your browser from <truncated> to <truncated> then a frequency of 100 MHz to 1000 MHz is selected.higher frequencies provide higher temperatures!!!!for a small donation:BTC: <truncated> <truncated> <truncated>

### Reply 5:
Would you be willing to supply details of the type and quantity of coolant you are using, materials used for the cooling box, and what is dissipating the heat? Are the miners immersed in coolant, using custom water blocks, or something else? Working on different ideas for liquid cooling but not decided on a particular design yet.Thanks.

### Reply 6:
I want to scale operations ASAP. AS I do this, I am tying to understand how much power I will need if I go with the mineral oil cooling system. I see a few set ups on youtube , Antminer S9 submerged mineral oil cooling. But does anyone have data showing there are significant cost savings in this method ? It looks great, sounds so much better. but nobody reports real data on power consumption. Also what about machine depreciation, does this improve or shorten life , Share what you know. ThanksJeff

### Reply 7:
Back to basics... Oil immersion is a HEAT solution. Unless you overclock, your not going to affect your direct mining power consumption. You could affect your overall power consumption if you were to stop using air conditioning and did your heat rejection outside (e.g. Had you cooling radiators outside) instead of inside - but few spend the money to recirculate and cool the waste heat - most just eject it outside directly.That said, the #1 enemy of any electronics is heat (with the possible exception of lightening and other power surge issues). Keep any electronics cool and they will last longer. Its why old data centers use to run at 60F... back when power was cheap and computers were expensive.

### Reply 8:
Loaded this firmware to S9 13,5 THs (build in autumn 2017). Try to change frequency (from 600 to 650, 700, 750 on blade). It changes in settings, but real productivity does not grow!In monitoring see for example 14 or 15 THs speed. Real on the pool see only 13,5 THs.Wtf? Changes prohibited by the manufacturer?

### Reply 9:
Hi,Try to enable your messages for ""Newbies"" to send you a message. I wanted to ask you if you used a custom firmware to ovevolt the miner or what else did you do to achieve it?What type of cooling are you using?Regards,

","[
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    ""hardware_name"": ""Intel chipsets"",
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    ""hardware_name"": ""AMD chipsets"",
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    ""hardware_name"": ""S7"",
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  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AntminerS9 14./s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9 13,5 THs (build in autumn 2017)"",
    ""hardware_is_owned"": true
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]"
24133,"Date: 2023-06
Topic: Solo Mine to Bitcoin Core with Antminer S9
### Original post:
I want to mine to a Bitcoin Core .21.0 full node. The Bitcoin Core node is running and fully synced. Bfgminer 5.5.0 is also up and running as a proxy and waiting for a device to connect. My question is how do I configure an Antminer S9 to connect to bfgminer to mine to Bitcoin Core.My current S9 settings are:URL: <link> !@##$$%%Any help with configuring an Antminer S9 to solo mine to bitcoind is greatly appreciated.Thanks,

### Reply 1:
If you want to solo mine why not use <link> so that you don't need to host and wait to download almost 500gb blockchain?I never heard someone succeed in mine solo with their own node unless you run your own pool.If you want an open-source pool then you can check this one <link> So that you have your own stratum mining pool and I'm sure it will work to mine solo.

### Reply 2:
Why are you using 127.0.0.1 as your URL, this will redirect the miner to itself, you need to use the IP address of the machine that hosts your node, you also need to check if port 3333 is the correct port set on your miner software.Is this for experimental purposes? because it would be a terrible idea if you are doing this as a business or even as a hobby.

","[
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  {
    ""hardware_name"": ""Bitcoin Core .21.0 full node"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bfgminer 5.5.0"",
    ""hardware_is_owned"": true
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]"
11237,"Date: 2022-12
Topic: I just can't login
### Original post:
I can't start a new thread so I'm replying to this one, sorry.I received my appolo today, opened the box and entered the password ""futurebit123"" into the login screen, but I just can't log in. I can't see if the keyboard is capitalized or not, so I'm not sure.Also, at first the screen didn't appear so I had to connect remotely, but now I can't access it remotely.At first the machine was getting the ip address via dhcp, but now it doesn't get it either.I just get the login screen.Please help.

### Reply 1:
I followed the instructions to download the xz file and attempted to write it to my micro-SD.However, etcher gave me an error message ""corrupted"". What should I do?

### Reply 2:
I'm not sure if this is the best thread to ask this question.Maybe better this one, and it might have your answer somewhere in it already.<link>

","[
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    ""hardware_name"": ""keyboard"",
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    ""hardware_name"": ""micro-SD"",
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23830,"Date: 2022-01
Topic: New to Me M21s with a ton of fan issues/codes
### Original post:
Hello! First post here but having some trouble with an M21s that just came to me. Previous owner installed a new fan and control board and couldn't get rid of the errors so he gave up.Codes are <truncated> suggestions would be greatly appreciated, kinda stumped on this one as the fan spins.

### Reply 1:
Almost all error are related to fans and a few of them is your two hashboard related to temperature protection. I think the fan that the previous owner replaced might be defective replacing it with a known working fan might solve the issue. And I suggest you download the error code descriptions here <link> that you know what are those error codes.

### Reply 2:
For miners with fans on both ends of them, just because a fan spins does not mean it is working. Air being moved by the working fan will make a dead fan spin but of course the dead fan is not actually helping to move the air and in fact slows it down a bit.

### Reply 3:
I suppose the fan model should be Delta PFC1412HE-00, like it is also for Whatsminer M20S .Any less powerful fan model will be insufficient for it.

### Reply 4:
111 and 131 = outlet fan issues, it's either spinning too slow or the RPM signal isn't there or both.130 = intake fan speed error600 = high temp351 and 352 = 2nd and 3rd hash board overtempI think it's pretty clear by now that you need to replace both fans with proper working ones, unfortunately, a bad PSU can very well cause this issue, anyway when you buy the fan make sure you buy the one with the correct connector depending on the PSU type, P21 PSU and P21d both work on the M21s but have different fan plugs, one is flat another is square-shaped.If you couldn't locate the fans and or PSU nearby, reach out to grace on telegram @gracezhou1993, she is my number 1 source for all MicroBT spare parts, keep in mind both the fans and PSUs of this model are a bit expensive compared to the other miners.

### Reply 5:
Thanks for the help guys. I noticed the one fan is a .7A version as opposed to 7.2A on my other machines. Im gonna slowboat some fans from china and pray. I may just grab a PSU as well

### Reply 6:
Ouch. So I think it is safe to say that the previous owner did not have any idea about the requirements for the replacement fan.And even worse, he probably did not test the unit after he installed that new fan.Maybe meanwhile you can double-check that it can be fixed with a correct fan model, by borrowing a working fan from one of your other units?

### Reply 7:
Ya I was debating doing that, but it seems like any time I mess with one of these I break it so I was trying to avoid it.

### Reply 8:
Btw, since you mentioned that the correct fan model is a 7.2 Amp one, I suppose it is this one from the same manufacturer that MicroBT has used for other Whatsminer model fans. Fan type KZ14038B012U.I found a listing here <link> with a 6-pin cable)But you can also use the Delta one that I mentioned about earlier, considering you have Delta model both as a input fan and as output fan.

### Reply 9:
I ordered a delta with the fastest shipping I could find, hopefully it fixes my issue!

### Reply 10:
Just wanted to follow up, cant believe how simple this fix was. It was the front fan, dunno how I missed it but the wires were switched at the factory. Re-pinned it to the correct spec and she took off like nothing ever happened.

### Reply 11:
Thanks for the follow-up and glad to hear that the fix was so simple!

","[
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    ""hardware_name"": ""fan"",
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  {
    ""hardware_name"": ""control board"",
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    ""hardware_name"": ""Delta PFC1412HE-00 fan"",
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    ""hardware_name"": ""P21 PSU"",
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    ""hardware_name"": ""P21d PSU"",
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  },
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    ""hardware_name"": ""KZ14038B012U fan"",
    ""hardware_is_owned"": false
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]"
10893,"Date: 2020-06
Topic: New s9 upgrade thread. some info is up.
### Original post:
So I will set a three board unit up and show the hashing differences soon. Maybe Sunday morning.So pcb boards = same size. this is smart enough. have to drop into the s9 case.heat sinks = very close or the same. makes sense as it is a generic part.chip count bitmain = 63chip count. mystery builder = 51cap count bitmain = 6cap count. mystery builder = 7My goal will be determine if the gear does as well as promised.Make some more s9 space heater units.note I sold 7 pieces of braiins based gear and used 2 boards . I don't want those people to feel screwed over.So if this turns out good. I will see what I can do.Those sales helped me talk with this builder into the idea of building better space heaters.I will just see how if all plays out. But if it plays out well those buyers will be happy they supported me.I have finally gotten gear to mine.I have some old controllers.So I was to load this firmware into the controller via the gui option.new bitmain firmware means burn an sdcard.and load via sd card slot.I will try that tomorrow.Right now I set gear to low and auto tune.I am running it to btc.viabtc.com its mining away. I will know iif it makes specs for low in the morning.

### Reply 1:
interesting - when you say mystery builder - do you mean these are not bitmain boards?edit - I re-read it and see that you have another company making these - at first I thought you were modifying the S9's

### Reply 2:
Exactly they are a non bitmain company .They made 51 chip boards vs 63 chips.But the pcb board is the exact size as an Antminer board.Here are some screen shots. showing a two board running. the gui mining status and the pool numbers.this uses 616 watts. to do 11th. about 56-57 watts a th.I need a lot more testing on this.I will be making a you tube soon. since it is a non bitmain chip the freq range is different then the s9 chips.low setting with tuning tries freq 450 with best volts/wattspll option allows you to pick any freq from 450-570 and then try to tune for best efficient numberssince my hope is building better space heaters I asked if I can go lower then freq 450 and use the pll tuning .so I am trying 2 boards and pll freq 400 option.hope to drop hash rate to 9-10th and power to 520-560auto tuning takes more then 20 minuteshere is a nice feature temp of every chip.look at middle board it is not connected in any way reads -99freq set of 400 yieldswatts at 531hash at 10.31only 51-52 watts a ththis is actually better then expectedlooked pool side and I getwatts at 531hash at 9.84 thabout 53-54 watts a th. this is what I expected to get.I use this psu and volts supplied to it <rest of post truncated>

### Reply 3:
I like these hash boards so much I ordered some better quality fans and will test some more.I locked the older s9 mod threads.I would not mind having three 1 board miners using these hash boards.hashing at 6th and using about 320 watts.

### Reply 4:
let me know when they come available, I still have one S9 I could swap them in on and see how it works. 1 or 2 boards would be great as it could run on 110 v - with proper fans maybe even be decent enough to put in the house lolthinking of my grandson who wants to mine but has no job so he is not getting any large power hungry asic lol

### Reply 5:
when they come up for sale, let me know.

### Reply 6:
the new boards need some work in terms of correct fan and best down clock.The stock s9 fans are shit. and i have a lot of old ones.I ordered some higher end fans.the ones i order for my sales thread were nice with braiins firmware which allow huge downclock and a very quiet miner that uses 80 watts a th. about 5th for two boards and four hundred watts.these boards auto tune to 450 freq at about 55 watts a th.but that 5.3-5.5 hashing at say 325 watts. it has flakey tuning i kind of want to play with it more.

### Reply 7:
55 watts per th isnt bad especially if you can run them on 110v - will allow for a lot more home mining if they have decent electricity.

### Reply 8:
It cycles a bit when it tunes.Older Avalons would do this. Some times they would boot every 2-4 hours orIt means fans pick up speed just a bit every 2-4 hours.I know the fans I am using are some of the lower quality ones bitmain would use on s9'sI am hoping to get the gear to run really stable with out upticks in the fan and or reboots.At 55 watts a th for a lottery machine burning well under 400 watts closer to 290-310 watts it should be good For space heating and pretty quiet.New fans come next week.Now if you just want to run it with 3 board at low speed and don't care about noise I am doing 910 watts and 16.1 th about 56-57 watts a th at the k-watt meter.I use the 1200 watt hp psu blue jack for platinum. Found on ebay for cheap<link>

### Reply 9:
I hope to do 1 board minersthat do 4.8 th at 266-286 wattsthe three testing boards were sold to me for the shipping cost about 60 USD from asia to USA no taxes<rest of thread truncated>
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11285,"Date: 2023-04
Topic: How reliable is the AntMiner S19 Pro?
### Original post:
Hi all. Thinking of purchasing an S19 Pro or similar. Im basically wanting to upgrade from my S9s but im worried about reliability. Would you say they are better than S9s? Do they like being turned off and stripped for a monthly clean/blast of compressed air?I would basically be replacing approx x8 S9s but as you know these are relatively cheap. I have to clean monthly as my location seems it even with dust prevention measures in place. Are they better built than S9s as I think they only have chips/heat sinks on one side of each board. I also presume the noise levels will be drastically reduced by one S19 to several S9s. Its a big investment for me so I need it to last. Whats peoples opinions please. Thanks.

### Reply 1:
As far as reliability goes, I see that Riot Blockchain is running a crapton of those, so if these things had a high failure rate then they wouldn't be using them still.

### Reply 2:
I'm running 4 x S19APros the 110th version.They've been hashing away for months with no issues.

### Reply 3:
As an agent, I can tell you with certainty that the reliability of the S19 PRO is very good. It is an upgraded version of the S19, which is relatively stable. The current repair rate is a very low model.

### Reply 4:
Thanks all.Looks like their custom chips only run @ 45c compared to 89c with my current s9's!I just read that the S19J was slightly underclocked and more stable/reliable but it does not seem the case.Looks like i will upgrade then.

### Reply 5:
For Bitmain only the s19 series are more reliable than the old units but if you spare time you can also check Canaan units they are also good and I think it would be an awesome choice if you have strong units from Canaan. Read the post from this Most reliable SHA-256 Asic Miners

### Reply 6:
Depends on the conditions. High humidity (but still below specs!) will ruin the temp sensor on the farthest board in a year or two. Applying protection on the temp chips (nail polish type) probably solves this. I guess air particles are collected here by airflow + the humidity eats away the temp chip's legs.Otherwise, S19 reliability is way better than S17 and even S9 which was highly batch dependent.

### Reply 7:
Had to replace the control board in one of the S19A Pro's today as only 2 of the hashboards were showing up. That seems to have fixed it but that is after 6-7 months of 24/7 hashing...

### Reply 8:
i read bitmain s19 products are good. I do not understand which s19 model is worth to purchase.despite of hashrate and energy specs do you suggest to buy s19 s19j s19pro or s19j pro? s19 xp is too expensive for me

### Reply 9:
The S19 pros are pretty reliable when compared to the previous 17 series, there haven't been any significant issues reported, they have some funky PSUs and that's all about it, so make sure you get a spare PSU just in case you need it. The ""i' version is the only exception, it sucks and it's the cheapest out there, I'd stay away from it.When compared to M30s+ which are almost in the same efficiency group, the MicroBT beats the S19 pro by a slight difference in terms of reliability, none of this is my own personal experience, but I dig into so many telegram groups and I know I few folks who own a dozen of each, so I am just relaying that information here for everyone's benefits.

### Reply 10:
Well the s17 and s15 had glued heat sinks which were pretty big issuemy s19 seem better also heavy solid heat sink.

### Reply 11:
did not know that there is also an s19 'i' model then I will rather stay away from itI still do not understand the differences between s19 s19j s19pro and s19j pro.Is there actually a model s19pro and s19j pro or is this wrong?I read somewhere that the s19pro was manufactured on 7nm and the s19j on 5nm - can we conclude from this that the s19j is better because of the more modern manufacturing technology and thus better efficiency?

### Reply 12:
Yes the two models do exist, true the J versions use 5nm and the non J use 7nm but that does not mean the 5nm version is more efficient, the number of chips and how they clock thems is what matters.The J is said to be more efficient by a tiny bit, it seems like availability and price is what matters to most buyers.Pro vs non Pro is indeed a huge difference, so try to get the Pro, if J and non J are the same price get the J if not get the Pro non j.

### Reply 13:
helpful thanks - does that mean s19j pro is the best choice here?

### Reply 14:
No he mentioned silicon lottery.every chip stands on its own.So you could have a unicorn in the s19j that he mentioned.I have been mining with tons of gear since 2011.when gpu's mined btc 5 identical cards were shipped to me they had consecutive serial numbers (very rare to get that many in a row)they all had different efficiency. 2 could over clock like mad. 1 could under clock really well and the other 2 were in the middle.Even if you had 100 s19j pros a<rest of thread truncated>
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22329,"Date: 2018-02
Topic: Avalon 741 set manual fan?
### Original post:
Hello,I was able to witness an Avalon 741 from a friend and the sound when the fan is running at 80% is very loud, when it starts up to 50%, the sound is not that bad, is there any way to set the fan to 50%?Thanks

### Reply 1:
Only by setting -1 or -2 in the config.Fan speed is directly tied to chip temps and that is tied to their speed/Vcore. Quiet at first because it is cold. Use -2, lower speed and quieter fans when at temp. Cool ambient temp greatly helps as well..

### Reply 2:
Thanks NotFuzzyWarm, I will check ambient temp, is that the room temperature? I also found a post by philipma1975 creating some kind of enclosure that could work to lessen the noise.

### Reply 3:
Actually though the machine seems to have a mind of its own you can suggest a maximum fan speed. From what I gather though it only seems to affect the maximum startup speed as the Avalon will bring the fan to higher speeds if it detects high heat.Now on to voiding your warranty!First SSH into the machine using your password: Code:ssh <truncated> edit the cgminer startup script.Code:vi <truncated> is a line that looks like <truncated> --avalon7-fan $_fan-100 --avalon7-freq $_cf $CHIP_VOLT $VOLT_OFFSET $SSP""100 in there is the maximum fan <truncated> --avalon7-fan $_fan-60 --avalon7-freq $_cf $CHIP_VOLT $VOLT_OFFSET $SSP""Now exit the editor Code::wq! and restart the <truncated> restartLike was said above it is recommended you use the -2 flag to voltage to avoid overheating if noise is of concern. Lower fan speeds means higher heat... lower voltage helps mitigate this.Another option is put the device inside a box and use a dryer vent tube to exhaust the heat. Helps reduce noise by about 20db. Another is to grab cold air from outside. Lower heat will reduce fan speed even more. I had one Avalon running in a shed at 1200RPM for a while.Good luck and remember I am not responsible for fir<rest of post truncated>

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22349,"Date: 2018-02
Topic: 1200w PSU power a 2 board S9?
### Original post:
I want to pull the apw3 from it to power a new S9 I just got. If a 1200w hp psu will run it then Ill grab one of those instead of another apw3.

### Reply 1:
Probably. You'll need to read the specs very carefully on the HP power supply. You must have at least 1000W on the 12V rail. You must have at least 7x 6 pin 12V PCIE connectors and cables. These are often listed as 6+2 connectors. The 1200W rating is the total rating of the power supply. Most modern supplies have a 12V internal power rail and all other voltages are produced from that rail. This means all the power is available at 12V but only if you do not use the other voltage outputs.

### Reply 2:
No worries .Even with 120 volt it will do the job.

### Reply 3:
Great! Thank You Gentlemen !

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22343,"Date: 2018-02
Topic: Antminer S9 won't show anything in Miner status Hardware, BitMiner  Version
### Original post:
Please use the insert code function so you dont spam the board with mile long posts like this.The s9 will not show anything in the hardware version, bmminer version, nor will the antpool tool connect to the machine if it is not hashing.This is not an error, this is how it is supposed to function. The web UI pulls all of that data from the bmminerr API, so when bmminer is not running it will not be able to pull any of that info.How long did you let it run before deciding it couldnt hash anymore? Sometimes it can take them up to 45 minutes to start hashing on fresh firmware.

### Reply 1:
Yes, that is normal behavior as stated. I've found it takes at least 12 minutes for this information to show up. No point in even checking it before that. It may not show up at all if you enter the pool information incorrectly, so that's another thing to check.

### Reply 2:
Thank you for the edit mod's I could not figure out the code tags, now I have them.The miner did not connect for over 3 hours, but I did a factory reset and it did fix it.This log was after the frequency changed about an hour into letting it try to connect, was wondering if anyone noticed something odd in the log why it wasn't connecting.Its fixed now, but also sent to Bitmain for warranty since one of the hash boards is half working..Thanks.

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16114,"Date: 2021-08
Topic: FREE MONEY TO GO GREEN WITH A TESLA ROOF!
### Original post:
Anybody looking into the possibility of going solar with a Tesla roof, I have a referral code to get you a $100 discount. Every new customer who uses the referral code to activate their Tesla solar roof will get a free gift from me and if 10 people use the code successfully, I will give away $1000 to one of the referred users.This giveaway is to incentivize solar power use and do my part to share referrals with potential customers to give them a little extra incentive to go green. Best of luck to everyone!Reach out to me via a personal message and let me know you want a Tesla Solar Roof referral code. Thanks!

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16387,"Date: 2022-12
Topic: Looking forward to Asic mining journey
### Original post:
I have successfully sold every single graphic cards I own for crypto mining few days ago, some at loss and few at good money and now I've zero my mind to focus on Bitcoin only, something I should have done in 2021 instead of focusing on GPU and Ethereum?Now I have 15,000$ at hand, I am looking for a durable Asic miner for someone who lives in a far away black country where tech is less important .The reason why I said tech is less important here is because, right from day one I always said NO to Asic Miners because of repair and fixes, believe me no one knows how to fix Asic miners here .So I want a very durable Asic miner that can serve me, I've heard about few that are prone to faults, Power fault that's why I need your guidance.

### Reply 1:
So the risk of a faulty Asic miner is always present? Thanks @FP91G, by the way is it that hard to repair an Asic miner? I did some research yesterday online and I found out that some parts are switchable, like Complete board, Complete PSU etc Is there any stores that sell Asic parts where someone can just easily order for faulty part?

### Reply 2:
There are no such ASICs, because the risks of equipment breakdown are always present.And the more expensive your ASIC is, the more risks you have.For example, C9/S9 were quite reliable and maintainable, and even an engineer with very little experience could make a modular replacement and assemble one worker from two non-working ASICs. Some of my colleagues lost money because they bought asics, but did not install power stabilizers from problems in the mains. And in the village, cheap electricity and frequent problems with power supply. If you were my friend, then I would recommend that you buy bitcoin, because there are fewer risks.

### Reply 3:
You can engage in modular repair when you have at least 15 ASICs and the price of the module and the price of its repair are approximately the same. And how many modern ASICs can you buy for $15,000?<link> example, you buy 3 ASICs, and you have to wait for 2 of them to break, and halving in about 15 months.

### Reply 4:
You have done good and not good at some points. You should have sold those miners that are much old and was loss to run. And also if you have sold all miners than you can buy Antminer S19 pro that can generate a decent amount of money too. And also Antminers are very very expensive and that's why I think that only Bitcoin mining is good cause in future it will give us good profit in next bul run.

### Reply 5:
No one really? or you have not found someone yet with that technical knowledge. If you say there is no one around who has some knowledge on repairs on ASIC's miners, it may mean that there are no individuals who are mining bitcoins in your area, and that is unlikely, there should be at least one other person who is mining bitcoin in your city, your responsibility is to find out and reach out to them to share some knowledge on how they have been handling the challenges with mining in your city, especially with repairs and fixes for your ASIC'sRead maintenance and care tips and adhere to them, your ASICs may take a while to develop faults.

### Reply 6:
That is quite expensive. If the price of the module is approximately the same as its repair can't there be any improvised module that are compatible?. And how on earth can a single miner own 15 ASICs it will take almost an entire lifetime of mining. Mining will be challenging for someone in far away Africa because the will limitations of ASIC parts and it mean spending more on getting more ASIC miners to serve as backup incase of breakdown.

### Reply 7:
The latest models are the most expensive, look at one generation behind, instead of the XP the j Pro, or instead of the M50s the M30s. Slightly less efficient, but much cheaper. With that money you should get about 10 of those and net about 1PH/s. I know people farming in Africa in some remote region at a hydrodam with sat link etc...

### Reply 8:
I will be happy if I can find someone, in my state no one can repair Asic miners and you will mess up if you give an Asic to those that repairs electronics like TVs or Sound system, they will add to the problem.Not everyone knew about crypto mining here and those who are into crypto and Bitcoin don't even bother about mining, I guess that's because of the bad grid power, that's even why I set up solar power in the first place but thanks for your concern.

### Reply 9:
This incident is exactly where I live, when the ASIC started to malfunction we had to start looking for a new one in online stores as there was no technician available to fix it. As far as I know, there are almost no shops selling mining equipment in our area, meaning we have to go to other capital cities to buy them. It is this difficulty that keeps mining from developing in the area where I live.Stable electrical energy is needed in mining, room temperature also has a lev<rest of thread truncated>
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10978,"Date: 2021-08
Topic: Building a Usb mining RIg for different script like btc and alt
### Original post:
Those specs are well known and trivial to calculate on your own:<link> GH (overclocked) will draw ~10 Watt10.000 Th = 10.000.000 Gh10.000.000/45 = 222.223 newpac miners (yes, that number is two hundred twenty two thousand two hunderd twenty three)222223 miners * 10 Watt/miner = 2222230 Watt = 2222 KiloWatt = 2,2 MegaWattElectricity price is usually given in cents/Kwh.Run those 222223 miners for one hour will use 2222 Kwh.Prices in my country are about 30 cents/kwh, so in my case, it would cost around 666 euro's PER HOUR... Not including any ""extra's"", you cannot run these miners in a vacuum... You'll need several hundred's of rPi's, computers or servers and big usb hubs... they all draw power to...BEFORE you'd actually attempt something like this (very unlikely tough... it would be a hell of a task to set this up, even if you'd manage to get over 200.000 usb miners), you'd only make 0.0036 BTC per hour, with a market value of around 115 euro's, so each hour running this setup you'd lose hundreds of euro's (on your power bill)

### Reply 1:
Thanks For the Info Sir so can you tell me any miner hardware which is capable to produce 1 TH/s or above but at the lowest energy consumption like under 1000watts and which country you belongs to in my country industrial billing units are 0.22 USD $ excluding taxes

### Reply 2:
I wanna know that how many usb i will be needed to obtain 1000 TH/s mining crypto power and how much watt and KW/h it will take monthly i.e gecko science edit i mistakenly added 1 extra zero 0 its 1PH/s i guess

### Reply 3:
Gekko R606 (max 1Th 150w ish), Future it Apollo BTC (upto 3Th 250-300wish) are both good low consumption home miners.

### Reply 4:
Why on God's little green Earth would you want to create a 1PH farm by using a gazillion small USB miners??? Just buy 10 to 20 of the largest modern miners which give anywhere from 50T to over 100THs each. Not only will be a lot easier to setup and run but also a LOT smaller total space needed and a lot less power draw.

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11036,"Date: 2021-11
Topic: My first ever miner avalon 1126, hash2 status red
### Original post:
Hey guys,This is my first ever miner that I just finished the setup. It's rated at 64 TH/s. in normal mode it's running at around 45 TH/s and in high performance mode it's running at around 62 to 65 TH/s. Only problem is in the ""mining status"" tab : ""Hash 2"" is showing red. Any idea what this means. Also, could someone give me the technical support contact details for avalon. I have emailed to <truncated> Not sure if this is the right one.**oops, couldn't figure out a way to upload the screenshot**thanks

### Reply 1:
thats not the right email address. their website is <link>

### Reply 2:
You need to use imgur or other service to upload images here.

### Reply 3:
It sounds like your second hashboard is defective

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23594,"Date: 2021-06
Topic: satisfy about t2tz and t2th+
### Original post:
helloi wanted buy this devices, anyone used them and staisfy?i already purchased t17e and im not satisfy, so i want ask this two model of t2t is good?i mean not break hashboard easy or unable to repair?second question, around 30TH upto 50TH, which miner is good?Thanks for your helps

### Reply 1:
Innosilicon mining machines are much tougher than the Antminer series. Look at this section most of the issues submitted here are Antminer.About repairing hashboard of these units yes you can able to repair them there is a guide on ZeusBTC on how to repair hashboard of this unit.The only problem of Innosilicon miner is power-hungry compared to Antminer.

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10703,"Date: 2018-01
Topic: Cointerra Terraminer IV Unboxing and Setup
### Original post:
Good summary.Does Con have a cgminer build that could be run on a PC over USB? Maybe the beaglebone controller is underpowered for the hash rate.

### Reply 1:
There is a USB port on the unit but when I called up it didn't sound like we were supposed to do that, I'll have to see if this is an option given how they're hooked up-I know on a lot of Bitfury boards there was no way to bypass problematic raspberry pi's.On a side note it honestly doesn't seem too much like it's the beaglebone at fault, one of the boards is basically hashing at only 600Ghps (and that's the local number, I'm sure it'd be like 500gh/s on the server) whereas the other one runs much faster.

### Reply 2:
hey guys what's the noise like of these units? can you see if the intake or exhaust fans could be replaced?

### Reply 3:
So, when CTA0 shuts down and CTA1 is still mining how do I reboot the miner? Just reboot CGMiner in the web interface? Have you figured this out yet?The fans really blow the heat a long way don't they?

### Reply 4:
Very, very, very loud and I wouldn't replace anything, it needs these super high flow delta fans to keep the chips cool-it's basically server grade equipment.

### Reply 5:
I'm not sure when you would ever encounter this scenario, they basically mine as one unit, you don't direct one board to one pool or anything like that, all the hashrate is directed at whatever pool you point it at. You can SSH in and reboot it that way and it seems to reboot everything.

### Reply 6:
thanks! it was really helpful to know that...

### Reply 7:
Yeah, I was panicking too because I couldn't even see it in DHCP and I had rebooted it several times and swapped out the ethernet cables left and right. Turns out all my ethernet cable swapping was the issue-if the ethernet cable isn't plugged in when you power the unit on it doesn't bother to try the DHCP again so it never shows up anywhere.To run this thing you really have to have access to the DHCP data on your router or else you'll have to scan every single local IP to try and find it. There is a way to set a fixed IP in the control panel but of course you can't connect to it until you have the IP...

### Reply 8:
So...I finally got my December batch Terraminer IV today-the original December $14400 batch version. I was super excited so I decided to take some photos, you can click to the imgur album here: <link> or just look below.Now, setup was a little bit tricky. First off, there were no instructions in the box on what to do, so I headed off to Cointerra's website where they promised they would publish directions before shipping the first unit, except there were no instructions there either. No matter, I looked in the forums and plugged in my networking cable, and plugged in power to both PSUs and the fans powered on. Except the Terraminer was nowhere to be found in my router's DHCP tables.As it turns out (after a call to Cointerra to figure out what was wrong) you should actually turn on your Terraminer by doing everything in the following order:1) Plug in the ethernet cable to a working router that you have administrative access to.2) Plug in the power cables to the two PSUs, you *must* plug in the power to BOTH cables within 3 seconds of each other.3) You should now see the orange LED power on on the front of the unit where it says CTR1-this LED shut off for me after a few seconds so yo<rest of post truncated>

### Reply 9:
I'll try to take a video later if I can, but if you're planning out where to put it I would strongly recommend a dedicated room that has good airflow. I can actually hear the TerraMiner from outside the front door of my home because it's sitting on my dining table. It's more or less equivalent to my blow dryer just with a lower pitch. Luckily my girlfriend is used to dealing with my insanity since I used to run the Single SCs...but to be honest this is louder by far than even several single SCs.

### Reply 10:
Unscientific, but I would say about as loud as 10 Avalons.

### Reply 11:
I ran mine for about a half hour on the lower PSU only (the other one doesn't power the internal controller) while I looked for an extension cord to reach another outlet on the other leg of my power. Hashrate doubled after plugging it in, no fiddling or rebooting required.What I did waste a bunch of time was on the fact that it's dhcp only, I was assuming it would have a default IP and wasted a long time looking. Well constructed box... it's also AWESOME on p2pool, lowest stale rate I've seen from any mining hardware.

### Reply 12:
Can you confirm the power draw?

### Reply 13:
I just posted the source into the cgminer git master tree.

### Reply 14:
Hey testerx... I'm seeing the same thing with mine.... local cgminer reads 1.5 to 1.6 but only seeing 1.3 on the pool. Did you ""fiddling"" get things working better? Can you expand a bit on what you ""fiddled"" with? Thanks man!

### Reply 15:
<l<rest of thread truncated>
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    ""hardware_name"": ""ethernet cables"",
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    ""hardware_name"": ""DHCP"",
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    ""hardware_name"": ""PSUs"",
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22605,"Date: 2018-05
Topic: please help on antminer s9 GH/S(RT) is showing 0.0000
### Original post:
red light is on and when im turning off and then on it is working for about 5 min and then GH/S(RT) is showing 0.00000 and not working any more.

### Reply 1:
Did you find the solution?

### Reply 2:
screen shots/ pictures / info more detail the better. this is like going to the garage and saying my car starts and runs for 5 minutes then stops more info is always better

### Reply 3:
I have the same problem although I'm not sure of the time frame. I see that accepts are still happening and the pool side shows that the miner is hashing so I'm not sure what the deal is.

### Reply 4:
hope somebody can fix this. the pool is showing lower hash rates already for my s9. only 4TH/s it shouldnt be power supply as it has enough, solo on a single circuit of 20A breaker. internet is stable.good <truncated>

### Reply 5:
Is your pool showing low hashrates? If your pool says that is it getting 13 or 14 TH/s, then it doesn't matter what your Antminer says its getting.

### Reply 6:
No sir. Its only showing four THs. So meaning the two hashboards really stopped hashing

### Reply 7:
Look in the kernel log, it should tell you why its not hashing on those boards.

### Reply 8:
it just came from RMA from Bitmain so it is good.

### Reply 9:
Did you find a solution to this? I'm having the same issue with one of my boards.

### Reply 10:
This doesnt mean anything, I have had bitmain send me plenty of bad 'warrantied' systems

### Reply 11:
Fortunately, bitmain sent me a free s9 control board even though i am out of warranty already. thanks to bitmain

### Reply 12:
can you tell me how do you contact with them?? i have same problem now and nees to fix soon (<link>

### Reply 13:
Your hashboard probably looks dead.... You can try to heat it up on room temperature, or put it near radiator, and turn it on again. Try to change cables, and turn it on. If nothing doesn't work its probably dead, and you need to send it to bitmain warranty/repair. You can see on their site how to do that.

### Reply 14:
Does the problem persist no matter what controller ribbon you have the board plugged into?

### Reply 15:
Can someone help me one of the hashboards is showing 0 in GH/S(RT) the temp 15 degrees and the status is ok, could you help me or give a recommendation in the pool my max hash rate is 10 TH my machine should be around the 13.5 THThe screenshot of the miner status is this<link> log status is this<link>

### Reply 16:
Same issue, did you solved it?I replaced my hash board under warranty and after replacement got 15 degree

### Reply 17:
nothing yet

### Reply 18:
What PSU are you using?

### Reply 19:
APW3++ provided by the bitmain site in fact i purchased the PSU with the antminer

### Reply 20:
What input voltage to the PSU? If it's only 110V then that's your problem. The bitmain PSU is only rated for the full 1600W output with 220V input, less if you're on 110V...

### Reply 21:
it has double input1.- input 110V - 14A2.- input 220V - 10Ai assume i can connect either 110V or 220V of course i am consuming more power at 110V

### Reply 22:
So I ask again, what input voltage are you using?

### Reply 23:
Ok thanks for the answer i miss the point sorry 1200W for 110V, i am currently using 110V

### Reply 24:
The issue also is if i disconnect the other boards and leaving the one with the problem the behavior is the same keeps showing 0.0000

### Reply 25:
Ah, well that is another kind of failure, unfortunately not as uncommon on S9's as it should be. If you do see the board hashing for a bit before it drops out on a cold restart perhaps a cleaning would help. Otherwise repair starts to be the only solution, or just run it as a 2/3rds S9 (S6?).

### Reply 26:
Ok thanks, i will try a little of cleaning and also do some work with my electricity to put the input voltage 220V, i will cross my fingers, after all the hope is the last thing it dies if not repair as you said or work with 2/3 of the S9 i will keep you inform after i do that for anybody else that is presenting the same issues

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22608,"Date: 2018-05
Topic: Antminer S9 back fan cable melting
### Original post:
Why would the S9's back fan cable be so much more prone to melting than the front cable? Is it because it comes in contact with the frame which can get very hot? It has only become more of an issue lately.<link>

### Reply 1:
Wow, how hot is that miner getting? Mine are running in 90F ambient air and I do not see anything like that.

### Reply 2:
104f ambient intake temps? How do your machines even run?

### Reply 3:
They run away... usually like 20-30% are in thermal protection at the hottest point of the day. It's a big dent in the hashrate, although I think the massive airflow helps.If only they would all just grow legs and walk to northern canada

### Reply 4:
Thanks for those suggestions. All of the miners are already on metal shelving with extra fans to ensure maximum airflow. All of the walls are louvered and the doors are open as well.

### Reply 5:
I don't know about that one specifically but during the day the cold aisles (ambient air) are around 40c and the hot aisles (exhaust air) are around 60c. So, cold = 104F and hot = 140F approximately.Also the miners are prevented from hashing with any local temp above 100c and any chip temp above 147c.

### Reply 6:
you really really do need to figure a way to keep them cooler, it may sound stupid but there are a few extra options if the miners are getting that hot, stick them on a metal sheet (thicker the better to act as an extra heatsink. point a couple spare fans at the sides to turn the case itself into a extra heatsink, and last try to get the room temp down, open windows and doors and stand there wafting cool air through the room if you have to.

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16340,"Date: 2022-09
Topic: It's time to look into BTC miner
### Original post:
Coming from the GPU side of sorry case right now what BTC miner can you recommend for me, that has less issues and more stronger , I think the way things are going to GPU mining its never going to get back on its feet again, the hashrate from Ethereum miners have storm every small Proof of work available.

### Reply 1:
There is a tool that you can use to compare all SHA256 ASIC miners check this link below- <link> think the s19 series have fewer issues same also for Canaan units but it depends if you know how to maintain your miner overclocking is most of the culprit that reduces the lifespan of the ASIC miner. So always use the stock firmware if you don't want to get lots of issues from your miner.

### Reply 2:
I am from Africa and to get a Asic miner fixed if anything goes wrong will be hard that's why I plan to get the strongest and also I don't plan on doing overclocking, I want the miner to last for a very long time, thank you for the advice I will check the link out.

### Reply 3:
Be careful from the zionodes posted above they are not well-known here on the forum, there is someone who mentioned it here with the URL link to their subdomain but accessing the website is collecting data like IPs. Another thing is that their website looks like Cloud mining they design it as a marketplace but don't have a physical product. About looking for most stronger or you mean has fewer issues then units from Canaan would the best choice according to this.

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23921,"Date: 2022-04
Topic: Innosilicon T3 hashboard repair
### Original post:
Hey guys. Yesterday. 5:30am power prices spike so my farm shuts down. 2 exhaust fans were left on.Started to rain a little and humidity spiked. Fans were bringing in humid air and all the miners were still hot.8:30am power prices came down and the farm restarted.I instantly lost 25 (out of 200) Avalon 1047 PSU's and around 30 Innosilicon T3+ hashboards. (out of 195 hashboards)The hashboards almost all had the same chip blown. This little BOOST_MP3426 board looks like it is removable. Does anyone know what could have caused this? Was it moisture?I have added a humidity sensor and the farm will not restart after a humidity spike until humidity < 70%. Also all fans now shut off when the farm shuts down. Does anyone know anything about this chip?

### Reply 1:
The image shows that it has lots of dust and since humidity makes dust adhere to one another it could lead to a short circuit. You should have monthly maintenance for these units and I think filtering your air intake will help reduce dust and humidity. And MP3426 is replaceable you can buy this chip on ZeusBTC from here <link>

### Reply 2:
What do you use to shut the farm down when grid energy price spikes?

### Reply 3:
I use 60AMP PDU's with a definite purpose contactor modded into it. Raspberry pi turns wemo switch on/off.

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23672,"Date: 2021-08
Topic: Chip temp of T17 is 88'C or more. Is it ok or not? Do i need to make cooler?
### Original post:
Hello guys, My T17 42T is running with 88'C ""Chip temp"", running time is 30 mins. I want to know chip temperature is ok or not.Do i need to cooler the miner?

### Reply 1:
hi, i suggest to you cooler this, 90c is the redline ! over 90c, the chance of down is high

### Reply 2:
Thanks. I will try to cooler the miner.

### Reply 3:
While 88c is within the normal range specified by the manufacturer, you should take this info and toss it out because the manufacturer doesn't tell you that these T17 gears use a very low-quality solder which will break a lot sooner than you think, and thus, you want to try to run them as cool as possible to ""hopefully"" get them to hash longer.

### Reply 4:
Or use a firmware that lets you slow it down...This family of miners is infamous for its poor soldering quality.

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13573,"Date: 2018-02
Topic: CGMINER Windows build for TECHNOBIT's Boards
### Original post:
Awesome job! Thank you!!!!

### Reply 1:
I would love to see HEX16a support, I hate hexminer, crashes way too many times.

### Reply 2:
me and 2 more miner will like it too

### Reply 3:
downloaded files, will test tomorrow, thanks

### Reply 4:
I am new to cgminer and trying this out with one technobit HEX16A2 miner. I have gotten up to the part of starting cgminer and getting the message that no device is detected. I tried unplugging and restarting, but no luck. I have opened the cgminer.conf file using Notepad++ as administrator and edited to ""set_default_to_c"" : true, It is still not detecting the miner.

### Reply 5:
Tried several times but no luck ... Zadig says driver installed but device list is not updated to reflect the changes

### Reply 6:
<truncated> you please check in device manager how device is listed.

### Reply 7:
^I had no problem with zadig driver replacement. Device manager lists the device properly, as in your capture.

### Reply 8:
Mine is listed as ""CDC RS-232 Emulation Demo""After Zadig driver replacement driver version is 6.

### Reply 9:
just tested it again, at first I get hexminer device not recognised and then replug while cgminer is working and voala.... and yes HEX16A is listed as ""CDC RS-232 Emulation Demo""

### Reply 10:
I will try again, most probably tomorrow

### Reply 11:
THAT was so helpful, THANK YA A LOT.

### Reply 12:
I got around to trying this on a different computer. For the first time I connected all 6 miners at once and tried running this CGMINER. Once again it failed to identify devices, although for the first time I did get it partially running. It communicated with 2 out of 6 miners. I was able to get about 51 GH/S, with only 2 devices recognized and running. Then I tried disconnecting and reconnecting each USB plug individually while CGMINER was running and this seems to do the trick. Have now finally gotten it to work with all miners running by starting with one device connected at CGMINER startup. Then plug in each device separately, verifying as I go that each miner is getting up to speed. Seems to work better than just jamming all the USB plugs in at once.

### Reply 13:
Code:My conf if anyone needs a guide[code{""pools"" : [ { ""url"" : <truncated> ""user"" : ""removed"", ""pass"" : ""XXX"" }, { ""url"" : <truncated> ""user"" : ""removed"", ""pass"" : ""XXX"" }],""expiry"" : ""120"",""hotplug"" : ""5"",""log"" : <truncated> : true,""queue"" : ""1"",""scan-time"" : <truncated> : <truncated> : <truncated> : <truncated> : ""/usr/local/bin""}]I use a 3 X Hec16C boards & hash at around 60Gh - Nice & stable too.

### Reply 14:
Thank you for posting the Conf file, it helped a whole lot. My commands are all in a line, but I was able to muddle through and get custom clocks running. I was able to hit 27gh/s, but it was heating the whole 2nd floor of my house, and I had 5% hardware errors. OOPs, too much. Thanks again.

### Reply 15:
You can open the config file with notepad++

### Reply 16:
Works perfect with a hexb and hexc board.Did you also activate support for other miners? I still have 2 bfl 60 i would like to run in one cgminer together with the hex miners

### Reply 17:
I have a BFL Jalapeno i wish to run with HEXC can anyone help me with <truncated> as a side not about the HEXC units, Make sure they run on there on rail of power.I have 3 of these and used to run them from my power supply along the same rail and they would fail after about 10 hours, Then i split 2 of them on 1 rail and 1 on the other, They started to last about 12 hours without 1 failing, Then i finally made the effort to split them all onto one rail each.They now run @ 16:1400mhz / 1060 mv and run smooth as a babies bum 24/7Moral to the story Separate Rail Of Power For Each HEXC Unit U Have!

### Reply 18:
Cgminer download link doesn't work. Could you fix it?

### Reply 19:
Links updated, sorry about that.On the next build I'll add support for BFL and other common ASIC devices

### Reply 20:
Thanks

### Reply 21:
<link> can I get my HEx16b2 board mining? I tried change conf file settings but I don't get it to work. Can you help me?

### Reply 22:
<truncated> : true,also set voltage to <truncated> : <truncated> : ""16:540"",

### Reply 23:
Also, you can try to plug in the device's USB cable to the router/computer only after cgminer has fully started. That makes a difference for me.Sometimes the power supply is not properly connected to your device. If it is the 4 pin molar connector type, sometimes you can get it to start after unplugging the connector and reinserting it to make sure you have the plug firmly connected. If it is the two screw wire connection type, then you have some extra work to do in order to make sure that you have a good electrical connection. Use the proper gauge of wire to ensure a snug fit. I use the power from the PCI-e power supply connector. You must observe the pin-out diagrams of the PCI-e connector: Ground is on the <rest of thread truncated>
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22229,"Date: 2018-01
Topic: Which PDU for S9s?
### Original post:
Hi,Ill be connecting 20 S9s, and Ive been looking a these PDUs:<link> would like to connect 4 S9 to each PDU, is it ok?Thanx

### Reply 1:
okay the top one can be found for 50 bucks I have 2 of themyou can certainly do 3 s-9's and in the winter with colder rooms maybe 4I will give you a link for cheaper price on them<link> info<link> for running 4 vs 33 is easy peasy 4 is iffyI don't know your power volts you could be 218 to 242 volts on a full drawand you can't tell until you hook up the gear.and if you are in a commercial spot you could be 208 voltsthese are 30 amp pdus de rated to 24 amps for safety so you get 6 amps an s-96 x 208 = 1248 watts which won't work6 x 242 = 1452 watts which may works-9's sold the last 3 months were 13.5 th and 14.0 thIf you grabbed 13.5th they pull less powerand within the 13.5th group some are better then othersso 4 per pdu on a 30 amp circuit is maybeI can do it in the winter but in the summer warmer weather I can not.I run 237 to 242 volts on full drawfound another one<link> is also good<link> is 5 so far which will do 15 to 20 s-9's all cheaper then what you linkedmore<link> also have links for psu'sand for power cords

### Reply 2:
Thanks for your help!

### Reply 3:
no worries I have a discount code for parallel miners psu's<link> for a discountuse my affiliate link click <truncated> 94% platinum 2400 w power supply kit for antminer s9SKU: 240010SET03-X7 Categories: Power Supply Kit, Antminer, S7, <truncated> kit is also goodInnosilicon A4 Domninator Litecoin Miner power supply kit. 2400watt Platinum 94% efficiency Power Supply 200V/240v. Delta Original. Model: DPS-2400ABSKU: 240016SET03-X7 Categories: Baikal Giant Miner X10, Power Supply <truncated> slush for 5% discountif you don't want to use my affiliate link for psu's go to this link<link> for cables<link> work with the pdu's

### Reply 4:
Hey man... Hate to resurrect an old link. I'm here in NJ also and have a few s9's on the way. I want to iron out electric stuff asap. I nought bitmain psu's and will likely have a 220 line ran with a 30amp breaker. I ordered 2 miners but may pick up another 2. Is there a pdu or pdu manufacturer you recommend over another?!?! Thanks. Gabe

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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2400 w power supply kit for antminer s9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon A4 Dominator Litecoin Miner power supply kit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": true
  }
]"
10990,"Date: 2021-08
Topic: (Review/Guide) AvalonMiner 841 13.0 Th/s, 1290W Bitcoin (SHA-256) ASIC miner
### Original post:
Very nice another great guide/review. Glad your trip to the factory was successful and informative.Did you have any info about the New Warranty being offered with these units?

### Reply 1:
No, but I'm sure Steven will tell us about the Warranty detailsonce all the details are planned.The goal will be that in most cases Canaan would send a new spare partand the user would be able to change that new part by himself.I will make a troubleshooting & repair guide as well, but it is yet a work in progress.

### Reply 2:
Sounds good I know they mention it here in the Data sheet. I'm sure Steve will be posting here at some point and give further details if there are any.<link> this is the current plan for warranty it more than makes up for the additional cost, and really shows their faith in the product""All Canaan products are designed to last beyondtwo years and we provide a two year limitedwarranty. Free replacement of failing parts isprovided from 120 days of purchase."" ""Taken from the Data sheet""

### Reply 3:
HagssFIN, can you elaborate a bit more on the offset voltage. I found this <link> but I am a little foggy on how it applies to the miner. Especially because the miner dropped wattage a bit when at the highest offset and hashrate.

### Reply 4:
Voltage Offset in this case means changing the voltage that is supplied to hash boards a little.The Wiki page you linked is not exactly about the same subject.

### Reply 5:
Can you run a -2 voltage offset with the 1600W PSU... I suspect that a 1400W PSU being driving to 1400W is way out of it's efficiency and probably effected the power actually used. A 1600W PSU test would tell us if that was the case or not.Thanks in advance,

### Reply 6:
Have you ran 821's & 841's on the same controller? If so, which one would you put first in line or it doesn't matter?thanks for the write up!

### Reply 7:
You can run both 821 and 841 with same controller unit, no issues.

### Reply 8:
Nice Work MattiAs always lower power settings interest me Since many in the USA will try a 1500 watt atx and 120 volts or a pair of these 850 watt atx<link>-2 1332 is good a pair of 850watt atx or a pair of 1000watt atx will do well-10+1SO the -2 and the -1 numbers have a bigger interest in the USA

### Reply 9:
Thanks Phil. By the way, the nicely formatted version of this review/guide (.pdf document) is now available for download here:<link>

### Reply 10:
Great review matti Looking forward to meet you

### Reply 11:
Damn nice review as usual!I'll try -1 on my rack and see if I can get similar results!edit: Ok, I can confirm now that you can set the machines to -1 without any loss in Hashpower, Tested with 60 machines.

### Reply 12:
@ThetajThanks Thetaj. Great.Were you able to achieve a better power efficiency level?

### Reply 13:
Asking same question 60 machines and how much watts saved on each one.

### Reply 14:
BCT is slow as hell today. Ok, so Tomorrow I'm gonna go and take some pictures to add to the discussion. For now words will have to suffice.at 0 offset most of my machines run at around ~1300w. Keep in mind my efficiency will be better than you guys in the West because we have native 390v-->230v here.After I did -1 as per Hagg's instruction on the main post. The one I am benchmarking is still running at the same speed. But the power draw has dropped to 1260wSo......60w for each machine, 60 machines = 3600w saved. not bad at all I must say. Honestly, for me these guys are giving the s9s a run for their money. But knowing Bitmain vs Canaan. I'm willing to bet at least 10% of my s9s are gonna blow a fan or controlboard in 1 year.

### Reply 15:
Nice.Did the miner temperatures also go down a little in your 60 machines setup?

### Reply 16:
Yes, but the fan's still 100%

### Reply 17:
Yeah no wonder, the 8 series has a lower target temp than earlier AvalonMiner series,because commonly the more you develop those asic chips to be better and go towards smaller node processes,the more heat sensitive they are.But it's a good thing that those temps lowered a bit,it makes it more likely for the machines to have a long lifetime.

### Reply 18:
Not suggesting to run them hot but before I pointed the intakes of my miners out my cold windows they were running crazy 35 to 39C degree intake and over 90 on the out for about 2 weeks since I was really busy with other things... they never failed so if you end up running them really hot for a day or so I wouldn't worry tooooo muchbut now that I got the intake under 15C they can run 50% fan or less and are really quiet. Once they crawl up warmer than 15C intake, you'll see the fan start to creep up too (for example - Temp: 16 / 69 Fan: 3570RPM / 54%)

### Reply 19:
(Review/Guide) AvalonMiner 841 13.0 Th/s, 1290W Bitcoin (SHA-256) ASIC minerClick for a higher resolution image. Picture copyright (c) Canaan Creative.1) General information, ot<rest of thread truncated>
","[
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    ""hardware_name"": ""AvalonMiner 841"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1600W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1400W PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""821"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1500 watt atx"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""850 watt atx"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""1000 watt atx"",
    ""hardware_is_owned"": false
  }
]"
23264,"Date: 2020-05
Topic: problem with T2T-25T frimware update
### Original post:
How did you get the firmware?It seems the innosilicon support page doesn't have T2T-25T firmware(it might be removed in purpose).You must flash it with the right firmware it won't work if you flash the wrong firmware.Why do you want it to upgrade or downgrade the firmware? Any reason? Try this firmware belowg19- <link> <link>

### Reply 1:
hello everyonei just received a T2T-25Th (innosilicon) mineri just wanted to update its frimware (or downgrade) it but i dont know just how to!when i trying to update from its ip i get failed error. also from innosilicon software the issue is that software doesent recognize the miner(couldnt get the ip)does anyone know how exactly can i update it?or downgradethanks in advancehere is some infos: <link>

### Reply 2:
Honestly, it's a different firmware than you downloaded from innosilicon support you can't find this version there. It's a low version of this miner I got these links from archive.com to find the exact firmware for this model. But only those links for t2ti-25t that I found from their old record from archive.orgCan you describe more about the error what exactly?Here's another source of firmware but I don't know how safe is this from another source.- <link>

### Reply 3:
i have downloaded that from innosilicon one week agothank you for your help. but this two frimware still doesnt work.i just wanted to update to get some improves.

### Reply 4:
i dont think if they have uploaded the wrong version in t2t-25th page in their servers. otherwise i dont know here is the complete details: <link>

### Reply 5:
As you can see on the image the error shows that the firmware you flash is not compatible. So the issue is the compatibility issue. Try to flash it again with g19 firmware posted above.Then check the error again and make a screenshot and put it again here.If you still getting errors while flashing using the firmware that I posted above. The only solution to force the flashing is to flash it with a TF card. The only problem is they don't have a link for the t2t_t25 boot image.You can read the guide from here <link> I think is to use the boot image from a4 miner then burn it on the TF card to flash your t2t_t25 miner with G19_R1.2.img. Once its success you can upgrade it on the WebGUI and use this firmware belowCode:g19- <link> bring it back to normal design and GUI.Take note: This is risky flashing with SD/TF card can damage the control board program and it might lead to hard bricked.This is risky I don't know if this method will work I just check their download page and check all models one by one and I saw some of them use the same boot image which is ""G19_R1.2.img"". That's why I'm thinking that boot image will also work on t2t miner then upgrade it to the latest firmware to take <rest of post truncated>

### Reply 6:
Thank you so much and thanks for your time.i will go through it

","[
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  },
  {
    ""hardware_name"": ""TF card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""a4 miner"",
    ""hardware_is_owned"": false
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]"
16008,"Date: 2018-07
Topic: Introduction - my small operation and photos
### Original post:
As I read it, he is no longer is doing any GPU mining, and only using Avalon A7xx Bitcoin mining hardware.

### Reply 1:
I was, back in 2013 / 2014. Now I am only mining BTC at the moment.Correct.

### Reply 2:
What site did you buy the 741's from?

### Reply 3:
Minerwarez: <link> can also buy from these official distributors:<link> distributors can be found here:<link>

### Reply 4:
How much BTC have you mined since? Do you think that Avalon 741 is better than Antminer S9 regarding the price/quality ratio (or rather regarding price/efficiency ratio)?Please keep us updated. There are very few posts in the Mining section recently although many people around the world are interested in this kind of information.Nice photos. 500 views in 5 days without sharing to the imgur community means there is an interest. Do you pay a lot for electricity with all those miners running?

### Reply 5:
0.46 btc since september, most of it already invested back in the venture with pre-orders (just ordered a couple more 741s from cryptouniverse december batch).I never used the S9. But the decision to buy the Avalon 741 was based on the fact that it was easier to purchase, and all the reviews here said it was way more reliable than the s9 units.Free electricity

### Reply 6:
Nice! It's always encouraging to see results from enthusiasts, rather than just the large corporate mining operations. Which pool are you on?""Free"" as in rent-subsidized, I assume?

### Reply 7:
Good luck. It all starts here!

### Reply 8:
I want to start out with 4 741's then progress from there. I missed the pre-order sale on cryptouniverse today but I live in the US so Blokforge should have the same pre-order sale soon. I have heard great things about the reliability of the Avalons. How has your experience been so far?

### Reply 9:
Good.2 of the units have been running nonstop since september and 2 since november.No a single issue so far.

### Reply 10:
I was under the impression that the 741's are no longer available to buy from distributors or canaan.

### Reply 11:
That's probably accurate. The new a761 and a8 series are supposed to be rolling out in 4-6 weeks (end of January they say, but they're always late).They're a little underwhelming, honestly. Off the top of my head they're 9ish and 11t respectively. The new units from Ebit look a lot more exciting. E9++ and E10. The first one is 10nm running at 18t and I dunno about the other one. They're already available for pre-order. I'm getting mine for 32000CNY each.I've only run Canaan machines up until now, but I'm definitely ready to move up!

### Reply 12:
Just wondering why you never touched Bitmain's S9 Antminers when it is obviously more profitable (Bitmain's 13.5-14 TH at 1200watts vs Canaan's 7.3 TH at 110 watts)? Don't get me wrong i'm not telling you what to do or anything like that, i'm just curious about what you think.

### Reply 13:
Incredible setup. Thank you for sharing your results with running those miners non-stop.

### Reply 14:
That's a great set up, with nice results so far, which mining pool do you mine with?

### Reply 15:
I missed the chance to buy them in november when I had the funds.Same here.

### Reply 16:
Hey, sorry for the late reply. I picked the Canaan machines because of how much quieter they are than any other machine. To begin with, I was running the miners in the spare room in my condo and I've got 2 small kids, so sound is a major concern. Although I'm underwhelmed by their newest offerings, I'd still recommend Canaan products to anyone wanting to mine at home, strictly due to noise.

### Reply 17:
I like the cardboard doorway setup. I have wondered why the Avalon's don't come pre-packed with the controller but it has to be purchased separately. You are right about the noise, however our 6 year old son sleeps with a noisemaker. I just turned that off and put the ant miner l3+ I have in his room. closed the heating vent to his room and let that thing heat his room. We have an old house (1950's) and so not really insulated. Our gas heater was running to keep the house at 72 and his room was the most comfortable in the house. lol. I told my wife we should buy one for each room.....yeah. she said no. But back to the avalon controller, have those worked well being separate?

### Reply 18:
It works great. Cardboard works great for insulation. And it has a really high burning point, so catching on fire because of the miner is not an issue.Just added a few more units to the setup, first post updated with new photos.

### Reply 19:
I added 4 more units since my last post and got another one on the way. Will update once that one is installed.The setup is definitely noisy, you can hear it across the warehouse (15000 sqf).I had a bunch of those cardboard pieces sitting in storage, so that helped

### Reply 20:
You haven't found any dust issues with it sitting in a warehouse? Compared to a hous<rest of thread truncated>
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    ""hardware_name"": ""741"",
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  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""a761"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""a8 series"",
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  },
  {
    ""hardware_name"": ""E9++"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""E10"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ant miner l3+"",
    ""hardware_is_owned"": true
  }
]"
24048,"Date: 2022-11
Topic: Avalon 1166pro 81th
### Original post:
(STATUS': ['STATUS 'S',When :0,Code:11,Mag Summary Description: cgminer 4.11.1 RESUMEN Transcurrido: 119 3.MHS av 74187749.99,MHS 30s 68621280.99MHS 1m 71195480.29 MHS 5m 75285286 515 MHS 98 Bloques encontrados 0, Getworks 48 Aceptado: 288 Rechazado: 0, Errores de hardware: 135, Utilidad: 14.49/Desechado: 8782912: St ale': 0; Errores de obtencin: 0; Trabajo local 20410 Errores remotos: 0, Bloques de red 2. Total de MH: 88523879952.0000, trabajo utilizado 1036884.44, dificultad aceptada 19693568.00000000, dificultad rechazada: 0 00000000, dificultad fija ': 0.0000000 0. Best Accin 49154323. Device Hardware 0.0007, Dispositivo Rechazado%0.0000, grupo Rechazado 6000; 0000, ltimo trabajo: 0)}}(ESTADO: {'STATUS'S When' 0, Code: 70, Msg CGMiner stats, Description cgminer 4.11.1), STATS (STATS"": 0, ""ID"": ""AV A100 Elapsed': 1193 Calls: 0.Wait: 0.000000 Mx.: 0,000000 Mn.: 99999999,000000, MM IDO <truncated> <truncated> <truncated> MEMFREE[1443056.0J NETFAIL(0 0 0 0 0 0 0 0 0J SYSTEM 3 STATU O 0 0 0 0J System 3 STATU Work in Halapsed Board: [1193] <truncated> LW[1127389] MH[45 30 56] HW[135] DH[1.914%) Temp[33] TMax[104] TAvg175) Fan 114479] Fan2[4495) Fan34488] Fan4(4437 ) FanR[59%) Vo[345]<rest of post truncated>

### Reply 1:
And the problem is?....

### Reply 2:
TMax[104]The problem comes is after changing the power source, the one that had a short circuit now has high temperatures, the source was a PSU3300-01 PLUS the one I bought is one PSU3300-03 PLUS I don't know if that is the problem because I was reading and I think it sends a high volt to the chips

### Reply 3:
I corrected some parts and bolded them.can you screen shot the gui I would love to see what temps are on that.here is a screen shot of a 1046 the gui shows 36/96 fyou seem to be around 75 which is okay

### Reply 4:
<link> I don't know how to add images I'm new posting but here you can see the imagethe fans are not working properly with FMS and the code <truncated> fixed the fans but the high temperature problem stillI have already spoken with canaan support but the answers they give me are very basic. All this problem arises after changing the power supply

### Reply 5:
your temps read36 or 37 inand 76 77 78 out.I have a 1166 it <truncated> the same as yours you have no temp problem unless they go to 80-83 or so.

### Reply 6:
when it rises in high temperatures, the hashes are lowered, that's why that temperature

### Reply 7:
According to your logs, the workmode is set to high performance why not change the work mode to normal so that it will run at normal speed with low temp?If you don't know how to set it to normal mode you can find it on the pool tab under advanced configuration.Or you can use this command to set <truncated> <truncated> suggestion to calibrate your miner I suggest try aging you can find that on the FMS tool or you can use this command <truncated> <truncated>

### Reply 8:
How can I reduce the volts to those chips?I just realized that the temperature of those chips rises because the volt delivered is too <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1208688.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: Out Over Hot, Hash Board: 3 ] Elapsed[488] <truncated> LW[410180] MH[8 9 15] HW[32] DH[31.315%] Temp[33] TMax[108] TAvg[76] Fan1[6829] Fan2[6708] Fan3[6863] Fan4[6769] FanR[100%] Vo[0] PS[0 1214 8 0 0 1368 160] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[23178.47] WU[323799.44] Freq[0.00] Led[0] MGHS[4714.87 10473.50 7990.09] MTmax[108 92 92] MTavg[70 79 78] TA[360] Core[A3200] PING[256] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[193] SF0[428 448 468 488] SF1[428 448 468 488] SF2[428 448 468 488] PVT_T0[ 77 108 104 85 80 71 70 76 85 81 74 76 71 77 80 81 73 72 71 74 81 81 77 71 69 76 80 83 74 68 69 73 83 79 71 68 68 73 83 82 71 66 68 72 78 73 71 68 64 68 76 71 74 70 69 72 72 71 73 60 66 62 61 65 64 67 67 66 64 64 66 64 66 68 67 63 70 66 69 68 67 64 70 64 64 68 66 63 65 70 65 66 62 66 69 69 66 67 67 67 70 67 66 70 64 67 69 70 69 65 67 68 69 66 67 67 64 65 68 71] PVT_T1[ 81 8<rest of post truncated>

### Reply 9:
Thank you very much for your answer, a question that command for volts or power 0, hashpower, 1260 in which part controls the power on the cards or in the power supply and has aged several times and does not solve the problemThe machine can last up to 3 hours working well and when the volt rises to the chips from 352 to 1018 it overloads it with volts and they heat up to a temperature of more than 105cI realize that not only in the chips does the volt change, but also in the Vo[0] it marks 0 in normal state it always marks Vo[340]It sends me this message when executing the command success: {'session': 1669392442, 'success': [], 'error': [{'ip': '10.0.0.13'}], 'results': [{'node': {'ip': '10.0.0.13'}, 'result': [{'err_msg': '<class \'RuntimeError\'> failed. miner ip:10.0.0.13 port:4028<rest of thread truncated>
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    ""hardware_name"": ""Avalon 1166pro 81th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU3300-01 PLUS"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU3300-03 PLUS"",
    ""hardware_is_owned"": true
  }
]"
24122,"Date: 2023-05
Topic: Innosilicon T3+ 57th - Replaced PSU - Fans stop start loop
### Original post:
Greetings all.So I have had issues with my Inno T3+ 57TH. At first, I thought it was a PSU issue so I have had a new one sent to me. The issue is still the same, here is what happens upon powering it up:Power onPSU fans spin/make noiseAll 4 Miner fans start spinning for 5 seconds.All 4 Miner fans stopThis process then just repeatsI have checked the hash boards for any damage or signs of anything, but nothing.I have reseated all the cables, but still nothing.The control board shows no lights for the ETH cable or any other lights.This miner also will not show up on my browser to share logs!I'm now thinking it may be a fan issue if the miner can refuse to start if one is malfunctioning. Is this even possible as all 4 fans start to spin?My thinking is more toward the control board, this also shows no signs of damage. Any assistance will be highly appreciated!Thanks, guys. Hope you can help!

### Reply 1:
Can you still access the IP through the browser?If not, would you mind trying to disconnect all connections between the control board and hashboard also disconnect all fans, and then power the control board with the PSU and Ethernet cable?Let's see if it will show any signs that the control board is still alive then access it through the browser.If success accessing it through browser make sure to copy all logs and post it here.

### Reply 2:
I will be sure to do this first thing! But yeah no show on the browser with IP. Thanks friend!

### Reply 3:
If you can't access the IP and can't detect the IP of the control board then possible that your control board is shorted or dead.If you have a multimeter to check the power terminal of this control board you can know if the controller is shorted or not.You can also check if the power from the supply to the controller is giving enough power or it might have no connection due to weak solder.

### Reply 4:
GM friend.So I removed all connections from the hash boards to control board, I also removed all the fans left on the ETH cable and PSU cables to the control board.The control board shows no sign of life still, I think we have found the issue!You say to check the soldering on the control board... do you mean the soldering underneath the sockets for the PSU plugs on the control board?Thanks!

### Reply 5:
Yes, it might need to resolder, or need to clean the socket or terminals due to rust and dirt or maybe one of the terminals is not soldered properly.Do you have a multimeter? It would be easy to determine if there is power on the control board while it's connected to PSU.Or if you don't want to much hassle then replace the control board.

### Reply 6:
Good morning,What cable are you using for the power supply?Personally until today use a C 19 3 1.5 mm 16 A power cable, however it has started to blacken and burn the electrical outlet. By educating me more deeply, by telling me that it needed 3 2.0 mm of 20 A, unfortunately all the searches done on Google or even chatGPT, impossible to find one of its diameters there.Hence my question, what cable are you using?

### Reply 7:
This one - <link>

### Reply 8:
Does the control board has an SDcard slot? if so, go to INNO's website and download the Sdcard files to try and flash the control board, I really see no point in unplugging everything when the control board isn't accessible on the network, if this isn't a PSU issue, then it's indeed a control board issue, nothing more.Also, you did not give us any history about the miner, was it working on your network before or have you bought it used? because most used miners come with static IP that might have a different subnet mask from yours and thus it won't be accessible because it doesn't try to negotiate an IP address with the router, also, are you sure your router has DHCP enabled?

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  {
    ""hardware_name"": ""PSU"",
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    ""hardware_name"": ""Miner fans"",
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    ""hardware_name"": ""SDcard"",
    ""hardware_is_owned"": false
  }
]"
23047,"Date: 2019-08
Topic: S9 13.5T antminer fans don't go full speed after re-flash firmware
### Original post:
Hi!One of my S9's went into error and didn't hash anymore so I flashed my firmware.After that, it started mining again but my fans don't switch to full speed even after 9TH... temperature rose above 100C so I quickly rebooted the miner and switched off the asics so it would cool down.Anyone have any ideas how to solve this? Been trying several firmwear versions all day, can't get it to work properly...

### Reply 1:
Do you want your fans at 100% all the time no matter what? Solution is easy, take out the fourth wire from the 4 pin fan plug, could be blue. Its possible to remove it by carefully releasing its plastic lock, and it can be put back again at anytime, no damage.Never again your fans will ever be at any other speed than 100%.Do try the above mentioned for a ""proper"" solution.

### Reply 2:
It seems the issue is in your power supply since the miner is working with ""Low Power Mode"" do you have any known working power supply to test? Or if you have multi-tester check the output voltage of your PSU it should show 12v each. Since the miner is working again with LPM but getting low fan speed why not apply the method that I suggested above where you can manually set the fan speed at 100% and let us see if the RPM speed of the fan will increase.Or follow this video to set the fan speed at full speed by adding some code through SSH <link> to the video he set the fan speed at 65% so replace it with 100% to run the fan at full speed.

### Reply 3:
Power 1 hash board at a timesee what happens.If it works mark itPower second hash board see what happensMy guess is you have 1 bad hashboard.By testing one at a time you will find the bad one.

### Reply 4:
I downgraded the firmware to the original version. Now none of the boards are working... As soon as I upgrade to an upper version, all 3 boards work, but the fans don't go full speed, so the boards get too hot.Somehow the fans aren't working along.1 fan keeps turning around 720 rpm, the other around 4560 rpm... While on all my other miners I got 4200 & 6120.I think I'm installing the wrong firmware version. Does anyone know which one is exactly the right one for the S9_13.5T?

### Reply 5:
All firmware from Bitmain for s9 is compatible with your miner but some of the firmware has some bugs.You can try to flash the miner with this one <truncated> this is a well-known most stable firmware that can fix some hashrate issue.If you are having some issue on Fan Speed you can manually set the fan to high speed you can follow the guide from here ""Solution for ANTMINER S9 FANS SPEED Up & Down every 20 Seconds.""

### Reply 6:
Yeah that's exactly the one I flash it to each time and none of the boards work. But when I flash the LPM version on top of that one, they all work and again, fans don't go full speed. The temperature keeps rising... Got the same problem on another S9. So I got 2 S9's that aren't working properly after installing these firmware's. Should I somehow format them or something first?I just tried this too, doesn't get my fans to full speed either... This is soo weird! I tried everything all day long... I'm positive it has something to do with my firmware. It would be too much coincidence for 2 of the same miners to have the same issue after a firmware upgrade... I highly doubt having any hardware issues...What's the proper way to completely re-flash these miners to the original firmware?I've already tried SD flashing t9+ -SD Tools.zip on to my S9.Then I flashed using the webbrowser <truncated> on to it.None of the boards then worked. The red led lights on them didn't even turn on.Then I flashed <truncated> on top of <truncated> and my boards all 3 started working, but the fans just won't spin full speed.I don't know what I'm doing wrong...

### Reply 7:
Yeah I got 20 exact same S9's here. I'm going to try changing the control board to double check the hash boards and fans all are still ok. If so, then I'm positive it's a firmware issue...

### Reply 8:
Ok for anyone interested, I found the issue on both my miners.The intake fans were malfunctioning. I ordered 2 new ones, changed them and voila! Everything works perfectly now.

### Reply 9:
It probably stopped hashing because temps were high and the miner went to protection mode, times like these are where reading the kernel log will most likely tell you the exact the problem , but instead you went ahead and flashed a different firmware without having figured the cause.however , I am not sure how did the LPM firmware allow you to hash with a faulty fan, before it start hashing it has to test both fans for a little while and if they are under about 4000 RPM it will show a fan error and won't start hashing.I would also inspect the fan grill , I had some bad grills slightly touching the fan motor causing the fan to run slower and wear out way too soon, this can be fixed by removing the grill and bending it <rest of thread truncated>
","[
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  {
    ""hardware_name"": ""4 pin fan plug"",
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    ""hardware_name"": ""multi-tester"",
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    ""hardware_name"": ""hash board"",
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    ""hardware_name"": ""intake fans"",
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    ""hardware_name"": ""fan grill"",
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11195,"Date: 2022-08
Topic: PDU Antminer
### Original post:
Hello Guys,I'm looking for a PDU with sufficient power to run Antminer L7 (3500W) with EUROPEAN plug.Do you know a good link where I can find these items?Thanks in advance!

### Reply 1:
i use this:<link>

","[
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    ""hardware_name"": ""PDU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer L7"",
    ""hardware_is_owned"": false
  }
]"
11154,"Date: 2022-05
Topic: Just purchased an S9 Miner off Ebay and it has one heatsink missing? Still Mines
### Original post:
Hi allJust purchased another S9 of Ebay and opened it up to check/clean (most screws were loose/been opened) to clean before setting up and mining.Board 8 has a heatsink totally missing YET it is still hashing ok??How can this be? I presumed chips were all in series, so if one goes down the rest/all do??I can provide any pics as <truncated>

### Reply 1:
please photo all 3 boards front and back.I would like to see what the missing heatsink looks like.Oh I fixed the photo for you

### Reply 2:
You are confusing terms here, heatsink is only used for cooling, the miner can run without any heatsink attached (well, not for a very long time, but you get the point!), a missing chip on the other hand will stop the miner from running, but according to your image, it seems that the 63 chips are there, also judging by the temps, it doesn't seem like there is any missing heatsink.My guess is that you are counting the empty slots or the heatsink at the backside of the board, the S9 has a few ""missing"" heatsinks at the back by default (IIRC it's a total of 12 missing) and the front side has 63 heatsinks.

### Reply 3:
Temperature is measured at very few points on the board, so any one individual chip could be smoking red hot and it wouldn't show up on the reading.And while one chip can run without a heatsink, it'll probably fail pretty quickly. And depending on how it fails, it can be fairly meaningless or it can cripple the whole board.Your point stands though that the backside heatsinks aren't nearly as significant as the chipside heatsinks for effective cooling, and in fact several are missing right up against the fan, by design.

### Reply 4:
yep they kind of form a v to channel the air.its why i wanted to see photos of the boards.if a heat sink is missing in that v shaped area he may get away with it.if he is missing a heatsink on the other side he will kill the board.there are some heat sinks he could fit that could help but with no photos i cant tell him what to do.

### Reply 5:
This shouldn't be a problem this is easy to fix if you have a loose heat sink you can just reattach them with any thermal adhesive.Or if you have a missing heat sink you can make a DIY heatsink that you can make from an aluminum can.If you have a budget then you can buy any heatsink or use the heatsink from an old PC motherboard located on northbridge you can cut or trim the heatsink to make sure it will fit then use artic silver or any thermal adhesive to attach it.

### Reply 6:
Here is the board, it's in position 8 (furthest away from PCIE connection for control board).It's still running fine with NO heatsink!I have a spare heatsink and some epoxy paste here to add one....Can you explain what you mean by the V direction of airflow please??Thanks

### Reply 7:
Plus i have tried to add a picture of the image and nothing shows? Only a link??I have tried -HTML EMBED, BBCode (Forums), plus tried putting them in the 'add image' icon when you post on here?Cheers

### Reply 8:
Hi people. I bought S9 SE 16T used without warranty. It worked first day and then I had to relocate it and now one of its hashboard is not working and comes with different frequency than others. I'll attach the kernel log below. Please helpBooting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> 0 1Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash <rest of post truncated>

### Reply 9:
The first thing you need to do is to edit your post the kernel logs is too messy to read without putting them all into ""insert code tag"". Why not do some basic first. - Factory reset the miner by holding Ip report button for 15 seconds then release- Flash the firmware to the latest firmware- If do not work flash it through the SD card you can find the SD card firmware of this unit from Bitmain download pageIf it still doesn't work try to replug all cables from the control board and PSU and also try to clean and remove dust then try it again.

### Reply 10:
Yes bro for this unit I saw a component detached from the hashboard itself. I have<rest of thread truncated>
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    ""hardware_name"": ""heatsink"",
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  {
    ""hardware_name"": ""PC motherboard heatsink"",
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    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""SD card"",
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11230,"Date: 2022-11
Topic: why cgminer increases ""nonce2"" and ""ntime"" every 5 seconds ?
### Original post:
Hello everbody,i have a few questions about the mining process related to cgminer. I did read this and that.Following is an excerpt example of cgminer mining on mainnet (against bitcoind @localhost) with a GekkoScience Compac F USB miner at an average hash rate of 387 GH/s. I have shortened/masked the long values for <truncated> 16:19:28.299] Work nonce2 1257 ntime 63667efb[2022-11-05 16:19:28.299] Generated GBT SOLO work[2022-11-05 16:19:28.299] Pushing work from pool 0 to hash queue[2022-11-05 16:19:28.306] Discarded work[2022-11-05 16:19:28.306] Selecting pool 0 for work[2022-11-05 16:19:28.306] Generated GBT solo merkle <truncated> 16:19:28.306] Generated GBT solo header <truncated> 16:19:28.306] Work nonce2 1258 ntime 63667efb[2022-11-05 16:19:28.306] Generated GBT SOLO work[2022-11-05 16:19:28.306] Pushing work from pool 0 to hash queue[2022-11-05 16:19:28.306] Popping work from get queue to get work[2022-11-05 16:19:28.306] Got work from get queue to get work for thread 0[2022-11-05 16:19:28.306] Selecting pool 0 for work[2022-11-05 16:19:28.306] Generated GBT solo merkle <truncated> 16:19:28.306] Generated GBT solo header <truncated> 16:19:28.306] Work nonce2 1259 ntime 636<rest of post truncated>

### Reply 1:
Hi n0nce,it is just for education purposes, trying to understand and fiddling in the code.

### Reply 2:
In cgminer, any new block or any update of cuurent block will create a new ""ntime"" when block information is received. About 60 second, block update information is coming from pool.see parse_notify() function.In cgminer, nonce2 is used to create more local block header data for more hashing and is used for generating new merkleroot in local header data. it changes very quick. see gen_stratum_work or gen_solo_work funct.It is used in submit work to pool and pool uses it to re-generate block header for verifying if block header is resolved.

### Reply 3:
Hi <truncated> correct. I am working on gen_solo_work because I'm not using a pool, I'm mining on my own bitcoind node. I'm aware of the reason nonce and nonce2 are used. It is very well explained here and here.Sure? I am talking about the nonce2 (extranonce in coinbase) and not the original nonce. If nonce2 would be incremented, where would be the upper limit of the range ? When I decrement nonce2 in cgminer it starts at <truncated> so that's why I think it is the upper limit of nonce2.Note: Not to confuse with Extranonce1 vs. Extranonce2Nope. That is what cgminer seems to do by default. After the 5sec (default) new ntime is generated, nonces are resetted to zero and the process is started over.

### Reply 4:
Oops, my bad; I'm blaming my tired eyes.No no, I asked whether you changed the code such that it doesn't reset the nonces to zero after 5s. Because somehow in this quote, your timestamp was not updated in 5 whole minutes, right. So you did fiddle with the code. Now, what about my suggestion that the variable may be wrapping around? That's something to consider when working with large numbers / too large numbers for the variable types in use.

### Reply 5:
Add debug prints! Something like <truncated> ""Hello World!"");Then pipe stdout to a file. If that's not good enough, you will need to open a file and write to it instead, but that will be slightly more complicated.

### Reply 6:
I am trying to understand and see live what exactly happens in the mining process. Yes, I did ""freeze"" ntime for that educational purpose in the example above. I did not freeze nonce2 but I increased the timer from default to 5sec to testwise 15sec, just to see if my changes took effect. So far so good, however I am still far away from my goal.What I like to see is:- all the nonces that cgminer sends to the hardware for work, I like to see how this process is threaded and queued by cgminer- the exact shares that are generated and sent to the hardware- the exact nonce, nonce2 and ntime value that were used for each particular hash step and the result for itGenerally spoken, I'm looking to more infos that I miss with the --debug option of cgminer. Currently I'm stuck even trying to display simply the nonce values and the particular hash result of one single step. I am aware that this could output very high amount of lines and generate a log with huge size, but I'm interested in one complete cycle through this:- ntime should be freezed at all, irrelevant for me, same for merkle root- cycling through the whole nonce range and when nonce reached the upper limit the nonce should freeze i<rest of post truncated>

### Reply 7:
To be honest, I haven't looked that deep into cgminer yet; if nonce is always 0, I suppose it's possible that it only rotates through nonce2 instead - not sure. Maybe we can summon @kano; he knows for sure.

### Reply 8:
I did so But as I said, I am even struggling in getting the nonce value displayed.Code:if (opt_debug) { char *header, *merkle_ha<rest of thread truncated>
","[
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22748,"Date: 2018-09
Topic: [Antminer S9] System Upgrade Failed - cp write error
### Original post:
I have an Antminer S9 that keeps resetting its pools to factory default. FW version is 2017 Jan 24 but when I try to upgrade I get this error:Code:System Upgrade Failedcp: write error: Input/output error cp: can't create <truncated> No space left on device cp: can't create <truncated> No space left on device<link> highly unlikely that this machine was hijacked while in my possession, but it was used before I received it. Kernel log: <link> blocked the default pools so it will not mine for bitmain, but I do need to figure out how to change the pools without the machine reverting back to the default pools.

### Reply 1:
Have you SSH'd in to check if the filesystem is full somehow?

### Reply 2:
It looks like the program is fully corrupted that is why upgrading doesn't work.Did you try to use <truncated> to flash your miner? If not try to flash it using this fix-upgrade, then upgrade it with factory firmware then fully reset the miner to factory default.Here's the new antminer s9 fix upgrade link <link>

### Reply 3:
This is strange. Before I asked the question I did ssh and check the filesystem with df -h and I think there was only around 60MB available. I figured that this was why I was getting the cp error. Today I saw that it was only 23 MB used and 104 MB available, still couldn't flash the firmware.I tried the s9_fix_upgrade but I got the errors you can see in <link> Mainly this one seems very similar still:Code:mkdir: can't create directory <truncated> No space left on deviceThe miner seems to be rebooting itself every 15-30 minutes, and every time the factory default pools are restored...I guess trying to flash with microSD is the next step?

","[
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    ""hardware_name"": ""filesystem"",
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  },
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    ""hardware_name"": ""microSD"",
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23423,"Date: 2021-02
Topic: ERROR POWER LOST on the Test Fixture
### Original post:
Hello. I got a test fixture to test my T17e damaged hashboards, but everything I use the T17e test file, I got this error: Code:1970-01-01 <truncated> power type version error1970-01-01 <truncated> Sweep error string = V:1.1970-01-01 <truncated> <truncated> <truncated> stop mining: get power type version failed!1970-01-01 <truncated> *power off <truncated> faultPlease, somebody help Already received help from people who selled me this fixture, but, the problem still exists. Already used conversion files, different test files, etc. I even got another test file, but it is of Antminer S17, and that one works without problems

### Reply 1:
Are you sure the PSU is working fine? I would test with another PSU as this seems like a power-related issue, also ensure you are using the correct files for the T17e miner, which website did you buy it from? if it was zeusbtc then I would contact Kevin, he will surely help you out. I could also contact him on telegram for you if for whatever reason he doesn't respond to you, do let me know.

### Reply 2:
i recently has this error. anyone can help me?exactly i copied data from one hashboard to other hashboard and this issue happened.

### Reply 3:
What data did you copy from one hashboard to another?? do you mean the DSPIC32 hex ? Zeusbtc also talk about the possibility that their own tool could result in an incompatible ""code"" and they have a tool to fix that, I think you can manage the same fix with PICKIT 3 (check the first topic I referenced).

### Reply 4:
Could you post the full log?Are you using an APW9+? I think the power_api.c deals with the communication to the PSU, so if you are using an APW9 maybe that is what is causing the ""power type version error"".

### Reply 5:
Thanks. from where i should download hex code of t17e hashboards?

### Reply 6:
You have to extract it from a working hash board, you might be lucky enough to find it online but i would bet against that.If you don't have a good hash board to use then simply make a new topic and ask if someone can send it to you.

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    ""hardware_name"": ""T17e damaged hashboards"",
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    ""hardware_name"": ""Antminer S17 test file"",
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    ""hardware_name"": ""APW9+"",
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16339,"Date: 2022-09
Topic: How does mining a ""Blockhash"" exactly works?
### Original post:
Hello guys, i have watched tutorials, YouTube, google, and here on this thread and i still didn't understand how miners in the end get the so called ""Blockhash"".can someone please explain to me with the following example if it's possible?Let's take block number: #755118 it's blockhash is: <truncated> it's Merkle root: <truncated> and finally it's nonce: 91615120 And block number: #755119 it's blockhash is: <truncated> it's Merkle root: <truncated> and finally it's nonce: 2254353472what process had been done to get blockhash #755119?Thank you

### Reply 1:
Hi. This question is about bitcoin block structure, not about mining.This means that * if you're a technical guy you should move the topic to Development & Technical Discussion; then you'll get good technically accurate answers. (this would be the best option imho, this looks like a technical question to me)* if you're a not so technical newbie, this may better go to Beginners & Help.Now, about your question, you may not have been looking for the right websites. And sources of information.One direct explanation come from <link> which is one very good source for learning:If you go to the source of this quote, you'll get more details.Related links:* <link> <link> <link> <link> <link>

",[]
3998,"Date: 2018-05
Topic: [GROUP BUY WORLDWIDE]BTMine v1 Miner 200GH/s      BTC 2.4
### Original post:
Why don't you try just turn on your second PSU with short connecting pin 13 and 14 on ATX connector. You will have 12V on PCIE and CPU connectors which is needed for miner to work.I'm not sure that miner is using power from ATX connector, only starting it with two pins: <link>

### Reply 1:
Got my tracking for my orders. The machines is waiting for pickuping in Hongkong.They worked hard. Lunar new year comes soon and Chinese people has many things to do. Please take them 2-3 hours a day for sleeping. They ll deliver product as they gave the deadline. If not, they ll do a refund. So dont worry so much.

### Reply 2:
Order date?

### Reply 3:
I'm trying to figure out how to use just one PSU to power one of these. I have a 1200w and a 1350w PSU but it seems ridiculous to use both. What about a splitter like this <<link> Or, is there a better way to do this?

### Reply 4:
depending on your psu can also try this, however the second 24pin connection may not even be needed.<link>

### Reply 5:
Hello BTmineI just purchased 3 more units and sent 7.2 bitcoin, my transaction id is <truncated> look forward to receiving these additional units and getting them online mining!Thank youMtnminerSo all know Bitmine.ch in Sweden, When I tried yesterday to pay for my 1 th/s preorder awaiting payment in the build cue, Bitmine.ch in Sweden cancelled my order and suggested I resubmit and pay with a projected deliver date of 3rd week in March!Time is money, so now that money has gone to China, instead of Sweden. Though, I will be hashing 6 weeks sooner with a total of 1.1 th/s, instead of the total of 1.7 th/s I would have had in March, considering the rate of complexity increase. I will still be <truncated>

### Reply 6:
I just increased my order to 14 miners. I'm not happy about the delay, but don't believe they're out to scam anyone.

### Reply 7:
I was given a refund on my last 2 units I was put on delay for. I have 4 units from them total now. All are up and operational and currently mining very well. I am running no overclocking on any of the units right now because they all came online last night and are 15 minutes away at my shop since it's got cooling for our hang out area that's a bit overkill ... 800 sqft and a 3 ton unit.Screen shot was taken randomly 5 minutes ago.Powell 1 = USB SticksPowell 2 = Asic CubePowell 3 = Asic CubePowell 4-7 = BTMiner v1 on stock clockThe people at BTMiner and I talked and the refund was released (PayPal) instantly.miaviator ... Now I've read some of your post and I am glad you are trying to help others from being scammed (or on what seems like permanent wait) because you lost $20k to Butterfly Labs? Stuff like that is appreciated for you to try and help people, but some of your post are just over the top. Before you try to tell me I don't understand that kind of money you should keep in mind until a few months ago I held the record for watercooled 02+ Porsche Turbos in mph in the 1/4 and watercool 6speed 60-130s so I've had times where even though things came through I was out 30-40k for<rest of post truncated>

### Reply 8:
you realy love your Porsche(s), do you?

### Reply 9:
Love mine but it's a money pit from hell My brother learned from me lol, kept his 07 at 870rwhp on stock motor LOL!Miaviator I know it comes off bad but I'm glad for what you do to help people, but sometimes there is a point don't have to spam it. Sometimes though it's a losing battle.... Trust me I've tried before to help people in other industries.

### Reply 10:
I had my 2 delayed ones refunded via paypal as well. Keeping the ones I ordered via BTC for now. Took less than 5 minutes.

### Reply 11:
Paied for one miner. Waiting for your reply.

### Reply 12:
They said that you should not over clock. It will mess up the PCU that came with it. What about the people that got the the machine without PCU? Next question who here has overclocked? If anyone has done so please let us know and if you can post a how to?... Also please post that you have recieved your miner once you got it. It makes for less hating going on..

### Reply 13:
Drama Queen.

### Reply 14:
This is definitely not a scam. I received my two units last night, and they are both hashing away in the garage just fine at roughly 220GH/s each. They are certainly loud and my units were poorly assembled. Since they are in the garage, the noise is bearable. On the shoddy cases, it's not a huge deal, as they are miners, not artwork. As far as ease of setup, it was a little tricky getting two PSU's into the case and plugged in - very tight. But once they had power, connecting to the network and setting up cgminer took 5 minutes. Also, they run a similar OpenWRT linux to the AntMiner S1, so I was able to SSH into the machine, set up api-allow and see the status on CGRemote. Easy-peasy.I'm running them with two Corsair CX750 PSU's each, and they draw about 950Watts from <rest of thread truncated>
","[
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    ""hardware_name"": ""1200w PSU"",
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    ""hardware_name"": ""1350w PSU"",
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    ""hardware_name"": ""24pin connection"",
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  {
    ""hardware_name"": ""BTMiner v1"",
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  {
    ""hardware_name"": ""USB Sticks"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Asic Cube"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""Corsair CX750 PSU"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""PCU"",
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]"
16391,"Date: 2022-12
Topic: Suggest me the best mining rig on my situation
### Original post:
My house is currently the only house here in our area that has electricity. Many establishments like hardwares is only connecting to our power supply and they are the one whos paying all the electricity bill including our own consumption as part of our deal when I allow them to connect.I want to have my own mining rig that can generate profit that doesnt consumed much electricity within a month. I need a suggestion for a rig that will consumed only maximum 1000 kWh for a month with the best possible income result. Budget for the rig is no problem because I have money for this investment.

### Reply 1:
1000kwh in a month they are 1500w per hour of consumption, 1,5x24x30 approximately 1000, on that power there are some asic but a little dated, in a month you would not return to any investment.

### Reply 2:
With this option, I would buy a RX 570 or RX 580 4 GB. These video cards can be found inexpensively in very good condition and very cheap, about $ 700, to make a mining farm for ethereum forks with a hashrate of 240 megahash - 8 video cards. But only sell coins in the next bull market.

### Reply 3:
with that amount he can also buy 2 L3, I think they are more profitable today.

### Reply 4:
If you only have 1000kwh per month for Bitcoin mining you can only use S9 miner that consumed around 1400w per hour and around 1000kw in a month.Or if you are looking for Bitcoin miner that doesn't consumed much power check USb miner like Compac F 48 pieces of them can hash around 14.4th/s with very low power consumption.

### Reply 5:
Unfortunately, today it is very difficult to find an Antminer S9 in good condition, because it has been on sale since mid-2016. Or buy several ASICs for block repairs. But asics make a lot of noise, which will be a bad solution for mining in the house, and mining a farm from video cards does not make much noise.

### Reply 6:
Is the ROI will still be slow if the cost of electricity will be excluded on the computation. Im trying to purchase a miner that doesnt have any complex method to build. I can extend to 2000kwh for a month but with less noise as much as possible so that my neighbor beside my farming house will not be distracted. Whats the estimated time of ROI on your suggested rig?I preferred Bitcoin because I already loss confidence on Ethereum after the merge. Mining fork coins is gamble for me. I need to ensure the ROI first for my rig cost before I can venture on risky altcoins mining.Thank you. I will try to check some of this rig price and specs.

### Reply 7:
Hi bro if you want best of best Bitcoin mining Rig than Bitmain antminer S19 pro that is the best if best and it offers 110 TH mining power and that can generate almost 6 to 7 dollars per day that is a good start and can be a best passive income. And there are many other coins that can also generate good profit too. Here is a screenshot of mining profitability.

### Reply 8:
That 6 dollars can be misleading since you need to factor in the cost to mine, not to mention it needs 3kw electricity which is probably out of OP range. Instead of making a profit, he might suffer more loss if he buys it (unless he mines indefinitely). CMIIW.

### Reply 9:
s9s are very loud. The L3+ much much less.

### Reply 10:
I disagree the L3+ burns 750 watts2 of them do 1500 watts.2 of them earn about 3 usd a day90 usd a monththey merge mine ltc and dogealso a s17 pro set on low will do 1200 watts which is 1.2 x 24 x 30 = 864 kwattsit will do 40th which is 40 x .063 = 2.52 usd a day or $75.20 usd a monththe key is what does he pay for his power

### Reply 11:
You can buy a s19 and undervolt it with aftermarket firmware to use around 1300 watts to stay under your monthly 1000 kwh target. You will probably get 50Th or so on a s19 with that undervolting.

### Reply 12:
If I understand the author's post correctly, then 1500w per hour is free. 2 asics for litecoin will give about 100 dollars of profit per month, but he will have to deal with noise. This is not such a large amount of profit now, but if you do not sell coins, then perhaps there will be more profit.

### Reply 13:
L3+ are not crazy loud.s19 are crazy loudL7 are crazy loud.

### Reply 14:
Your monthly Maximum power consumption= 1000 KWHFor A day Power Consumption= 33.33 KWH=33333WHFor An hour power consumption= 1389 WAbove mentioned situation below mining rigs suitable for yourself..Bitmain Antminer S9Power consumption 1323 per Hour Bitmain Antminer S19 XPPower 3010W per HourMicroBT M50SPower 3276W per HourBitmain L3+Power 790-800 W per HourDevice choose your own risk. See a lots of mining rigs here: <link>

### Reply 15:
Mining normal sound level (Deci-Bel) (50-75 DB) Some suitable sound level Mining rigsL3+ power 800W sound level 70 DB S19 power 3010W Sound level 80 -83DBS19J Pro power 3068W sound level 75DBL7 Power Sound level 75 DBZ15 power 1510W sound level 72DBJasminer X4 power 1200 W sound lev<rest of thread truncated>
","[
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    ""hardware_name"": ""asic"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RX 570"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RX 580 4 GB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain antminer S19 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S19 XP"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT M50S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19J Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Z15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Jasminer X4"",
    ""hardware_is_owned"": false
  }
]"
23058,"Date: 2019-08
Topic: Static Red light by SSH (Help)
### Original post:
Is there a command to put static red light by SSH on Antminer S9/s9i ? I've been struggling to figure out.

### Reply 1:
What do you mean by static red light?Is it a red light from the hashboard?If you are using 2019 firmware you don't have access on SSH unless if you are using below 2019 firmware.

### Reply 2:
You can control the LED lights with BraiinsOS, or force them to blink or not to identify units.

### Reply 3:
Yes, ofcourse with access trough SSH - older firmware.And also without having to install braiins.Static ""Fault"" Led light is what I was thinking if there was any command for this.

","[
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    ""hardware_name"": ""Antminer S9/s9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2019 firmware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BraiinsOS"",
    ""hardware_is_owned"": false
  }
]"
23481,"Date: 2021-03
Topic: Canaan Avalon 821 [Trouble Shooting] Logs Attached
### Original post:
Replace the bad hash board

### Reply 1:
Since 1 chip of 26 are faulty I must replace the entire hashboard ?Is there anything I can do to get that chip working again ?

### Reply 2:
Replace the chip if you have tools needed

### Reply 3:
Greetings. I am looking for some insight on an older unit I've purchased.On boot the unit will reach speeds of 11TH and slowly decline to ~7TH.Unit: Canaan Avalon 821As attached bellow you will notice chip #24 on hashboard #3 is not receiving any <truncated> 45 46 45 47 46 49 49 50 50 50 48 50 49 49 51 51 58 49 50 50 50 47 47 -40 46]PVT_V3_24[0 0 0 0 0 0 0 0]What are my options ?CGMiner API Log:Code:[Firmware Version] => Avalon Firmware for avalon8 - 20191114 luci: 6a99d1e cgminer: 48afac1 cgminer-packages: 11997c6Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[237] MW[79704 79761 79572 79649] LW[318686] MH[0 0 0 0] HW[0] Temp[25] TMax[62] Fan[4290] FanR[54%] Vi[1201 1201 1196 1196] Vo[3938 3950 3941 3924] PLL0[1717 6 6 2743] PLL1[2166 1 4 2301] PLL2[1715 8 4 2745] PLL3[2738 2 4 1728] GHSmm[6661.90] WU[106518.20] Freq[372.42] PG[15] Led[0] PM[0] ME[1 1 1 1] MW0[1 5 1 2 4 1 2 2 0 2 2 0 1 1 0 3 2 2 0 0 0 1 2 3 1 1] MW1[0 3 0 2 1 2 0 0 1 2 0 2 0 3 2 1 1 2 4 0 4 0 2 0 0 0] MW2[1 0 2 2 1 2 4 0 2 3 4 2 2 4 0 1 2 3 3 2 1 2 2 0 2 1] MW3[0 2 3 1 3 3 4 1 4 0 2 0 0 2 1 2 0 0 1 0 0 4 2 0 2 0] TA[104] ECHU[0 0 0 0] ECMM[0] FAC0[10] OC[0] SF0[0 0 0 700] SF1[0 0 0 70<rest of post truncated>

","[
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    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""chip"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Canaan Avalon 821"",
    ""hardware_is_owned"": true
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]"
23988,"Date: 2022-07
Topic: T17 - Failed to detect ASIC chips
### Original post:
[2022/07/24 18:32:40] INFO: Power ON[2022/07/24 18:32:42] INFO: Starting FPGA queue[2022/07/24 18:32:42] INFO: Initializing hash boards[2022/07/24 18:32:42] INFO: chain[2] - <truncated> 18:32:42] INFO: chain[1] - <truncated> 18:32:42] INFO: chain[0] - <truncated> 18:32:57] WARN: chain[2] - 29 of 30 chips detected[2022/07/24 18:33:00] WARN: chain[0] - 18 of 30 chips detected[2022/07/24 18:33:01] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:02] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:03] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:03] WARN: chain[1] - 0 of 30 chips detected[2022/07/24 18:33:09] WARN: chain[2] - 29 of 30 chips detected[2022/07/24 18:33:12] WARN: chain[0] - 18 of 30 chips detected[2022/07/24 18:33:13] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:14] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:15] ERROR: src/chip139x.c:1049 chain[1] - Failed to receive chip replies[2022/07/24 18:33:15] WARN: chain[1] - 0 of 30 chips detected[2022/07/24 18:33:20] WARN: chain[2] -<rest of post truncated>

### Reply 1:
first code it like i did.I assume it is old gear you have had a while.pull the board on the leftpull the board on the rightleave the center board.I assume it will read 29 of 30 detected and shut down.but what ever it does show the log in code please.

### Reply 2:
Your issue seems related to ASIC chips your miner's hashboard might have a defective/broken one that leads your miner to stop mining. Would you mind to try to flash your miner through an SD card and upgrade it to the latest version do this first before you follow the suggestion above(Sometimes touching any hardware could cause another issue or might get worst). If you don't know how to flash it through SD Card you can follow this ""17 series TF card flashing guide""

### Reply 3:
thats a good idea.I think all three will turn out dead.but the 29 of 30 board may work if he tries to heat it with a heat gun.sometimes if you clamp two aluminum plates one on each side of the the hash board then warm the plates it can reseat the heat sinks and will brin a dead chip back.

### Reply 4:
Hello, the log shows that the chip is abnormal. Please replug the cable connecting the hash board and the control board, or swap the cable of the faulty hash board with the cable of the non-faulty board, upgrade the latest firmware, and see if it works properly. If it still doesn't work, it needs to be repaired, to check whether the voltage between the voltage domains is abnormal and whether the impedance value of the chip is abnormal, if the impedance value is abnormal, the chip may be burned.

### Reply 5:
I agree there is no bad and good suggestion but in the basics of repairing units, you should always start with software before hardware. And only if he has BGA hot air to reflow those ASIC chips but I think hair blower would also work to melt a bit cold solder joint but not for long term.

### Reply 6:
Hello,Ill tell you exactly whats going on and then you can decide which advice is best for you. The bit about the cold solder joint isnt too far off. What happens to the surface mount components is the result of a combination of thermal and oxidative stressors. Below is an image of what happens to the pins of these machines. The data going into the hashboard enters through the first chip close all the way to the last chip and then turns around and the results are sent back the same way. When you have a zero ASIC error one of the pins on the return signal path or the low power supply path has been interrupted by cracks such as this. When you get any nonzero number the crack has occurred on one of the upstream data pins. <link>

","[
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    ""hardware_name"": ""miner's hashboard"",
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    ""hardware_name"": ""SD card"",
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    ""hardware_name"": ""aluminum plates"",
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    ""hardware_name"": ""hash board"",
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  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""BGA hot air"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""hair blower"",
    ""hardware_is_owned"": false
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]"
22585,"Date: 2018-05
Topic: 1 Hash Board do not mining S9 13.5T / Still under warranty
### Original post:
I bought 2 miners/ Antminer S9 13.5T about 2 months ago, 1 miner works perfectly but another one has 1 hash board dead and now sometimes it power up with only 1 hash board not 2. I used only 2 weeks. I wanted to sent at warranty in China but in another town/ room sometimes it worked, but if I shutdown and power up again it worked with 2 hash boards .Can I do something or I have to sent it back now ? this is my kernel log, I power up it with the dead hash board.** Very strage, I boot the miner, it worked with only 1 hash board, I reboot the antminer and now all 3 hash board works X(.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, no<rest of post truncated>

### Reply 1:
Do the hard reset first and replace the cable of hashboard before you send it back to bitmain. To perform the hard reset first shutdown your miner>power it again after 2 minutes hold the reset button for 5 seconds then release, the miner will automatically restart and it must be reset to factory default. If this won't work you can follow the other reset ways here <link> everything still the same result better to send it back to bitmain because you have a defective hash board.

","[
  {
    ""hardware_name"": ""Antminer S9 13.5T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cable of hashboard"",
    ""hardware_is_owned"": false
  }
]"
22586,"Date: 2018-05
Topic: Raspberry Pi with Minepeon problems
### Original post:
You've two different interfaces, which I don't think will work with MinePeon, because you'd have to do some routing on the Pi. You'd need a wireless access point connected to the switch to give everything on the switch internet access.

### Reply 1:
Did you add ""--<link> 8330"" to the BFGminer startup setting in the settings page of minepeon? Like this.In the blade configure page <truncated> you have to point the Blade to the minpeon IP in the ""server address"" line on the config page. You enter this twice, like <truncated> port entry would be ""8330,8330""The port # you use here needs to be the port# you entered in the minepeon config line.You need a passwd, like <truncated> Each blade needs it's own passwd, I use blade1 blade 2 and so on.

### Reply 2:
All good advice, but he's still running two interfaces, which I'm not sure works. I don't know how bfgminer deals with two IP addresses, if it listens on all IPs or just the one it's got internet access on. Slush's proxy would work OK in this instance, because it DOES listen on multiple IPs.

### Reply 3:
Hello all. Fist I would love to say thank you in advance to anyone who can help me with my problem.

","[
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    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MinePeon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""wireless access point"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""switch"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BFGminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Blade"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Slush's proxy"",
    ""hardware_is_owned"": false
  }
]"
16140,"Date: 2021-10
Topic: Best supplier for miners
### Original post:
I am asking for the best suppliers to provide miners to Georgia ?

### Reply 1:
It's not safe to buy to any unknown supplier better deal only directly to the manufacturer and authorized distributor. If you receive PMs from newbies here on the forum pointing to other websites I suggest ignore them they are most likely scams. Check this one <link> leads directly to the manufacturers and verified distributors.

",[]
11182,"Date: 2022-07
Topic: Silently cooling the Compac F miner, looking for the best fan configuration
### Original post:
The Compac F comes with no fans, and you must provide some kind of cooling to prevent its melting.So I first just connected this USB powered fan:I pointed it into the heatsink of the miner. This seems to do the trick, the miner works fine over a long period of time, no melting, and the fan is not crazy loud. Normally that would be the end of the story, and most people are happy with that setup.But, when things get quiet, the fan is noticeably loud in an annoying way as it's right next to me, and I would like to change that.So I started to look around to see how I could cool them down with minimum noise.I first saw these small fans that can be attached directly to the miner:But the fan is rather loud, so that's a no go for me.I already have some big fans that move a lot of air very quietly, like the Noctua NF-A12x25 PWM:You can manually set the speed for these fans with a controller, like this one(Noctua NA-FC1):That way, I can lower their speed and they are basically silent, yet still move a lot of air. That's ideal for this, so I would want to use them.What would be the best configuration to mount these fans to cool down the Compac F in the best way?I usually see setups like this <rest of post truncated>

### Reply 1:
How many sticks?I have run as many as 128 usb sticks.I have run over 15 of side hacksIf you have four sticks they can be like four table legsfor this pair of fans.wait for link<link> fans can rest directly on top of the four sticks and blow the air upwardsyou can do as many as eight sticksif you have them on two usb hubs

### Reply 2:
419 Mining sell the fan stand in the last picture. I use it with a 92mm noctua fan on 6x Compac F's. Works a treat.

### Reply 3:
Yeah, that's a great little stand, I'll probably get it.419mining open sourced it so you can 3D print it yourself if you prefer: <link>

### Reply 4:
Here is how I have mine setup. The aluminum extrude pieces are just 2 rectangles that are joined up top by the fans and the hubs sit on top of them.<link> sticks at 575MHzCurrently at 24 days of up time with it like so:Some of the sticks have Noctua fans with the Thingiverse 3d printed mount, but most are cooled 100% by the Noctua NF-A12x25 fans up top.Granted all of them have been adjusted/tinkered with a lot to makes sure none run more than 3A per and I also have all of them on Gekkoscience hubs.*EDIT* The I Power Meter reading is now at 200W (the 180 was at 550MHz), but that is powering EVERYTHING but the Pi!

### Reply 5:
Powell you little champion, Thats a good looking set up. Just to be clear..You are drawing 200 watts (+ Pi, which one, I am using Zero 2w) for 4.5 TH/s. Presume this is is for solo work ?

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    ""hardware_name"": ""USB powered fan"",
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  {
    ""hardware_name"": ""Noctua NF-A12x25 PWM"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Noctua NA-FC1"",
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  {
    ""hardware_name"": ""92mm noctua fan"",
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  {
    ""hardware_name"": ""aluminum extrude pieces"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Gekkoscience hubs"",
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  {
    ""hardware_name"": ""I Power Meter"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""Pi Zero 2w"",
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22144,"Date: 2018-01
Topic: S9 temperature
### Original post:
So I just got 2 new antminers s9. I am keeping their temperature around 65-70C. I've read that people normally have them around 80-90. My question is if I am keeping them too cold or is colder = better?Thanks, happy new year everyone

### Reply 1:
They run better warmer but you're in a good temperature right now.

","[
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    ""hardware_name"": ""antminers s9"",
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]"
23281,"Date: 2020-06
Topic: need advice with miner t17e, s9k and s9se
### Original post:
hello guys i have something to ask is there a way to turn the display lights at will? im trying to locate some machine that i dont have named with the other machinesany suggestions?

### Reply 1:
Why not use the Awesomeminer if you have a big farm you can use the feature called ""LED flash on"" it can force the miner led light to keep flashing.Or try to check this thread below for other suggestions. - <link>

### Reply 2:
Antminer T17e has a locate function which can be activated from the web browser like soFor S9k and S9se, if you don't want to use any 3rd party firmware/tool you could simply add any character to your pool setting to make the pool or worker details invalid, your miner will flash the red led indefinitely and that should be enough time for you to locate the machine, if you don't own a lot of miners and all of them are within your line of sight, a simple reboot will do, you will notice a different led combination on the miner that is booting up vs the once that are mining.

","[
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    ""hardware_name"": ""miner t17e"",
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  {
    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9se"",
    ""hardware_is_owned"": false
  }
]"
10952,"Date: 2021-06
Topic: Ebit e9i firmware problem
### Original post:
Hello, I uploaded one ebit e9i with official firmware V9.1.0.36.When restart the machine, the only accessible port are 22 by ssh but admin/admin not runs and the web interface not accessible.Any suggestion? Thanks

","[
  {
    ""hardware_name"": ""ebit e9i"",
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]"
16304,"Date: 2022-07
Topic: Suitable PSU for Avalon 1166Pro
### Original post:
The PSU that came with my Avalon 1166 Pro has broke.What are my options? Can I mix and match PSU from Antminers if the overall wattage is the same?Also please suggest some reputable sources to buy from.

### Reply 1:
Mixing/matching multiple power sources on the same device is usually a dangerous idea, at least in my experience with GPU mining. You can easily create currents that backfeed and burn out the cables.You should buy a single power supply that is strong enough.

### Reply 2:
usually this miner use PUS3300-03plus 3300W our company sell it but have to ship from china it will cost about 15 days so i suggest you can buy it in amazon

### Reply 3:
I think it should be PSU3300-03 plus, but I checked this power supply and its price is higher. I saw in ZEUS that Avalon PSU3300-03 Power supply is also suitable for A1166Pro. And its price is cheaper than plus.

### Reply 4:
I just searched in Google, there are many sites which are providing PSU, you can search also , see it and I will recommend not to use antminer's PSU, it may damage your system. Hope u understand

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  {
    ""hardware_name"": ""PSU from Antminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PUS3300-03plus 3300W"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU3300-03 plus"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon PSU3300-03 Power supply"",
    ""hardware_is_owned"": false
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]"
16296,"Date: 2022-07
Topic: Questions for immersion cooling vendors
### Original post:
My company is thinking about a 10 MW BTC mining farm and would like to use immersion cooling systems. Does anyone have a good list of questions to ask cooling vendors?

### Reply 1:
Hi, Which vendors are you considering?

### Reply 2:
Hello my friend, our company has an oil cooling system, if you are interested, I can introduce it to you in detail.

### Reply 3:
Hello, Boxtechy offers you good Liquid Cooling Systems for you mining.Please feel free to contact me for more details. <link>

### Reply 4:
Hmm, looks like Castrol is getting into the immersion cooling fluids biz. <link> worth looking into

### Reply 5:
The cost is too high, it is recommended to negative pressure fan + water curtain

### Reply 6:
I highly suggest getting in contact with Elite Mining Inc. <link> a professional staff i.e. <truncated> and they're all very efficient in what they do. They have partnership programs you might be interested in if you have the means to do so. Good luck!

","[
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  {
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  },
  {
    ""hardware_name"": ""oil cooling system"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Liquid Cooling Systems"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""immersion cooling fluids"",
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  },
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    ""hardware_name"": ""negative pressure fan"",
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    ""hardware_name"": ""water curtain"",
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23406,"Date: 2021-01
Topic: lovecore a1problem
### Original post:
hi i have lovecore a1 i am getting this errors in cgmeiner and device is no mining .what is the problem?Code:-- Logs begin at Sun 2018-01-28 23:58:17 CST, end at Tue 2020-11-10 05:11:31 CST. --Nov 10 02:48:03 rockchip systemd[1]: Starting Cgminer...Nov 10 02:48:03 rockchip systemd[1]: Started Cgminer.Nov 10 02:48:03 rockchip cgminer[254]: Started cgminer 4.10.0Nov 10 02:48:03 rockchip cgminer[254]: Loaded configuration file <truncated> 10 02:48:03 rockchip cgminer[254]: Probing for an alive poolNov 10 02:48:03 rockchip cgminer[254]: Failed to resolve (?wrong URL) <truncated> 10 02:48:03 rockchip cgminer[254]: Failed to resolve (?wrong URL) <truncated> 10 02:48:03 rockchip cgminer[254]: Failed to resolve (?wrong URL) <truncated> 10 02:48:03 rockchip cgminer[254]: Shutdown signal received.Nov 10 02:48:03 rockchip systemd[1]: Stopping Cgminer...Nov 10 02:48:03 rockchip cgminer[254]: Complie date : Aug 26 2019Nov 10 02:48:03 rockchip systemd[1]: Stopped Cgminer.Nov 10 02:48:03 rockchip systemd[1]: Starting Cgminer...Nov 10 02:48:03 rockchip systemd[1]: Started Cgminer.Nov 10 02:48:03 rockchip cgminer[282]: Started cgminer 4.10.0Nov 10 02:48:03 rockchip cgminer[282]: Loaded configuratio<rest of post truncated>

### Reply 1:
The kernel log looks pretty different, kind of hard to understand, but it seems like your problem is hereCode:Nov 10 02:48:03 rockchip cgminer[254]: Failed to resolve (?wrong URL) <truncated> upload a screenshot of your pool/worker settings, you can hide the sensitive details if you wish, but you need to show as much as possible, and before doing so, make sure you copy-paste the URL form the pool and ensure you have no leading/trailing spaces in both the worker as well as the pool url.

### Reply 2:
This error occurs on Cgminer when you put the wrong URL or extra spaces.Look at the error as mikeywith posted above this is the error you will get if you don't add the whole URL suggested from ViaBTC. Next time read the whole guide from them on how to configure your miner from here <link> is the correct <truncated> must copy the who URL including ""stratum+tcp://"" and it should be fixed your issue.

","[
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22786,"Date: 2018-10
Topic: Antminer T9+ not recognizing hashboards after Dollemizer flash
### Original post:
I recently tried to flash the Dollemizer firmware on my brand new T9+ and afterward my miner won't recognize any of my hashboards. I tried to hard reset my miner and also flash the original firmware back onto the miner with no luck. I have no idea how to fix this and all I'm getting from Bitmain is to try a known working control board, which I don't have access too. Any insight would be helpful. Thanks!

### Reply 1:
""hi"" ?Please shearch on forum.thanks.

### Reply 2:
The best insight i can give is to read an entire thread before you try a firmware known to have serious problems and an inability to be removed You might try reading through the whole thread to see what others have done.

### Reply 3:
check this out > <link>

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    ""hardware_name"": ""hashboards"",
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    ""hardware_name"": ""control board"",
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]"
22236,"Date: 2018-01
Topic: Antminer S9 cross flow fan mod
### Original post:
Hi there,Would it be possible to place S9 boards 3 in a row with a cross flow fan?Something like a R4 <truncated> fan have 210 CFM and unbelievable noise level.Would something like this be good enough?<link> No VDC VDC Watt Amp RPM CFM m3/min Inch/H2O mm db(A)MCD642SP-12H** (****#) 12 8~13.8 32 2.67 2600 260 7.4 0.21 5.33 53 Thx in advance

### Reply 1:
CFM required does not change just because it is a longitudinal fan. Just 7.4CFM is not going to cut it. Aside from that you DO know that type of fan requires a shroud to direct airflow right?Now a squirrel cage blower like used in a furnace - quiet and high volume.

### Reply 2:
I can 3D print those.Plan is to split the blower flow in 3 ways,each for one board.Think that the flow spread thru the boards will be better then from classical fan.Please correct me if im wrong.P.S i have one old S5 laying around.Can a hash board from s7 be connected to S5?Also is there a way to enable 4 board on S9 controller?cr

### Reply 3:
Blowing air across the top of one side of the heatsinks will do nothing for you. They are designed in a way that the airflow goes across all heatsinks in its tiny package. If you wanted a quiet miner, you shouldnt have bought a piece of industrial equipment.No to both of your PS questions as well.

### Reply 4:
Be very careful when improvising ideas with fans for miners. They are loud for a reason--moving HIGH amounts of air.Changing, removing, or tampering could result in the loss of your machine or cause a major fire!If removing the noise is what you are after, you might check out this thread for sound proofing.<link> safe!

### Reply 5:
It's working on R4.Well i'm willing to experiment,is that your problem?Simple explanation on PS questions would help.Thx

### Reply 6:
Got 2 boxes built.R4 config is more appealing to me as a form of a home heater(ex.fan coil unit).

### Reply 7:
A comment made by NotFuzzyWarm made a lot of sense. Squirrel cage fans are quiet and powerful, albeit much less compact. Might even have enough CFM to only need one. Only other hurdle is the tach sense. Autotune S9 must have it. I suppose a 555 timer could generate a signal to fake the miner into thinking a fan was running at 6000 RPM at all times. Or just clip the fan blades and let the motor hubs spin freely without doing any of the work other than generating a tach signal, hence very little noise from the boxer fans.Just forget about any warranty.Z

### Reply 8:
R4 is a completely different design with a different type of fan.S5 controller/software doesnt support S7 boards, simple as that.Firmware for the s9 is closed source, there is no way to enable an extra board.

### Reply 9:
BMMiner is open sourced. The only closed bit is the bitstream for the FPGA.<link> isn't too hard and the source isn't terrible to read. Just make sure you have the 32 bit compatibility stuff installed for your toolchain and zlib if I recall.

### Reply 10:
You would need to mount the boards in the direction of the airflow. Is that clear, you seem to have disregarded the other advice to that effect.So let me reiterate: if the air does not flow through the fins of the heatsinks, the chips will overheat and die young. Otherwise, go for it. It's your miner, you can do whatever you want with it!

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10902,"Date: 2020-08
Topic: My Avalon A921 is on the way
### Original post:
So I ordered 1 Avalon a921 from blokforge.No customs they handle it cost me 396 paid it with a cc.I will hook it up and review it some time soon.it should do 20th at 1800 wattsI hope it will downclock to 18th and maybe 1500 or 1400 wattsThe A841 was a good downclock machineThe A851 was really poor to downclockI will post more soon.

### Reply 1:
When did you place your order? I ordered 2 on Nov 30 and 2 on Dec 1 and no shipping notice yet.The sales price of $349 was hard to resist.

### Reply 2:
30 of nov but just one unit

### Reply 3:
A seller from Austria says this machine needs 95 - 100 Watt / TH.So this machine needs 1900 - 2000 Watt.I'm looking forward to your values.Is it possible to run the miner with two power supplys?

### Reply 4:
Yes, as long as each group of five 6-pin PCIe power connectors (there are two groups; one on each side of the miner) is connected to only one PSU.

### Reply 5:
Yes that is correct.I have a youtube video of the A851 with 2 psu's<link>

### Reply 6:
Still no word on when my 3 ordered Nov 30 will ship but I assume will be today or tomorrow. The two I got back in Oct. (at full price) are running perfectly at a rock solid 21.5-22THs each with 2x APW PSU's feeding each of them.Don't know if anything has changed but Kano tried tweaking the one Canaan send him back in Sept and found that even using SSH to get in it pretty much ignored his attempts to change speed and other settings.

### Reply 7:
Lucky. I somehow ordered one when they were first listed for $399 and price dropped $50 right after submitting. They credited back. No shipping notice yet though.

### Reply 8:
it just arrived [along with 5 l3+and 2 s9i all used from eBay]all need to get low power mods.I will get to the avalon late tonight.busy doing a build out in north jersey this week.Hoping to keep the avalon in house.

### Reply 9:
Likely duties/tariff is likely built into their pricing it just shipped from TX like they would be for our group buys from Portland.

### Reply 10:
w00t! Last night got notice from Blokforge my 3x A921's have shipped and should be here by end of week. Now to decide which dying s9's to replace with the 921's...

### Reply 11:
<link> help?

### Reply 12:
So I am looking for the software link as the A921 will not work with a841 software.poking around here is a no go so far<link> seems good<link> 20180918Download link Firmware - 20180918First controller's firmware for A921<link> rasp pi 3 is supported not rasp pi 3 +<link>

### Reply 13:
got it thanksdoing original the sept 18th first.flashed with etcher and my mac mininew flash works and I will move to next step need a micro usb cord to the dongle

### Reply 14:
My orders are still processing and past ship date. My first order was #6611. What were your guys order numbers? Curious if they are shipping by when the orders were placed or not. Hoping Canaan also offers some low power firmware.

### Reply 15:
I am behind you @ 6656. Started a chat yesterday and I was told a few more days to ship. It will not be here for Christmas, but I am hoping by New Years. Time will tell.

### Reply 16:
Do be sure that the cable is for both power and data... Very common issue is no coms because of folks using a charging cable that uses all 4 wires for power...How common is that? Common enough that Blokforge now supplies the USB cable when you buy a AUC3 dongle.

### Reply 17:
have a issue could be usb cable which does both power and signal is defective I am dropping connection between auc and miner.this is an example psu issue it is now using a pair of bitmain apw3+ and works!trying down clock with this settingall other settings are stockdownclock results with first rasp pi are poor watts are about 2020 stock settingI got watts to drop to 1800 but hash dropped more then it should of. so say 2020 watts give 19th or 1800 watts give 17thbasically shit gear on first attempt at down clocks.I moved onto newer firmware will get back with numbersstock was 2052 watts and 20 th on new rasp pi first down clock used <truncated> -1watts dropped to 1932 will get back with a hash number20.5 th so far so newer rasp pi seems better1932/20500 = 94 watts a th not close to a m10 2400/34000 = 70.5 watts a thbut cheap 2 units = 790 plus psus say 1000 or 1100 for 40than m10 from li is 890 plus tax and shipping or 1200 for 34th

### Reply 18:
Edit 1783 watts doing 18123 ghusing this <truncated> -7decent about 98 watts a th but I am hoping for betterat stock it was 2020 watts doing 20500it is a lot of hash for under 400 ssd but you don't get good efficiency.this is an industrial miner needs 240 volts for 1 psu or 2 separate circuits for 2 psus if 120 voltsit is loud.I am hoping for better firmware.I will tweak it more , but I do not like results so far. It is very close to the s9i in efficiency but does more hash with more power.13700 hash 1250 watts s9i on LPMI may be getting better numbers with the second rasp p<rest of thread truncated>
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    ""hardware_name"": ""AUC3 dongle"",
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16177,"Date: 2021-12
Topic: need help with cooling setup of mining container
### Original post:
its difficult to find experts in this field locally , so I am seeking help online40 high cube mining container (12.024 m X 2.350 m X 2.697 m ) has to be equipped with up to 250 unit of whatsminer m30s + miners (single miner Airflow is 9.187/Min - as i know maximum air volume for the whole server: 350CFM. ). We were recommended to install 14 industrial fan on hot side , single fan has airflow 13000 m3/h, and on cold side to install g4 filters. what do you think is this configuration good ? and can we go without installing fans on cold side, for the air inflow?can you kindly guide me how to calculate needed airflow of the container? and air outflow vs inflow ?My calculations were simple but I guess wrong:9.187*60*250 = 137805 m3/h - ToTal airflow of 250 miners.14fans *13000m3/h=18200 m/3 total airflow the whole containerI guess I should also use dimensions of container -- please help me out .

### Reply 1:
Im an engineer but not an expert in your specific case I would do this calculation based on the heat dissipation of each miner. For simplyness I would equate the electrical power of each miner with thermal power. So for example if you have 250units and each unit generate 1kw, then you have to move 250kW of heat power out of your container.So you wanna know the required airflow in a worst case scenario. Worst case scenario is always during summer time. The Delta Temp between the miner and the fresh air from outside should be a criteria. I assume 30C fresh air temperature.If the miners should not reach for example 50C, then you have a delta Temperature of 20C. Then have a look at this diagram. Its used for finding air flow if you install a compressor cooling like in an ice cream parlor.So for 1kW and Delta 20C you need about 175m/h, multiplied with 250 = 43750m/hEdit this example to your needs... I dont know how hot the miners will be and what is your maximum fresh air temperature. If you calculate this for Delta 5C you need about 150.000m/hCheers

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    ""hardware_name"": ""whatsminer m30s + miners"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""industrial fan"",
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    ""hardware_name"": ""g4 filters"",
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22803,"Date: 2018-11
Topic: How to have 6 connectors per S9 controller
### Original post:
Hey guys, here's a video I've made on how to enable 3 extra connectors for any Antminer S9 controller which have extra ports:<link>

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23664,"Date: 2021-08
Topic: repair T3s and S15s
### Original post:
Hi,I have some Innosilicon T3s and Bitmain S15s that needs repair. Do you guys know any reputable companies that can fix hashboards and PSUs for these units? Thanks.

### Reply 1:
If you are living in the US you could try to contact these two lightfoot and wndsnb they might be able to help you.Or if you're living in other countries you can try ZeusBTC they have repair centers in some countries you can check the list of location from this link below.- <link>

### Reply 2:
Thanks.

### Reply 3:
No responses from those two guys. Anyone else in the US that does repairs?

### Reply 4:
Go see here <link> has already created a pinned thread about this repair shop -topic.

### Reply 5:
Thanks!

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23740,"Date: 2021-11
Topic: 240v Garage Setup Electrical Help
### Original post:
Looking to put my farm in the garage, power company is coming to run a line straight from the pole, and my friend is an professional electrician, but he knows nothing about mining.Wanted to know what options, maybe kits or parts, fuse box, pdu, outlet, cable, AC display Meter and all that extra stuff for mining to buy for a setup of eventually 10 ascii miners 240v pulling max 3000,3600W (calculate over 20% to be safe), or just 9 if it too high. Thanks.

### Reply 1:
Well, there is nothing special about ASIC miners when it comes to electrical wiring, your friend needs to follow the same set of principles he follows elsewhere, you just have to give him the key information needed to run the miners and that will depend on what type of miners you are trying to put in that farm.Bitmain gears (ignoring the old models) all use two C13 cables and consume on average 3kw, Whatsminer on the other hand, uses a single C19 connector and consumes anywhere between 3kw to 3.5kw depending on the exact model and the efficiency within the same model.The majority of these ASIC miners are voltage sensitive, so if you are not sure about the stability of the voltage, you might ask him to install some sort of voltage protectors to avoid PSU damage.The MCBs / fuses sizes and all the wiring will depend on the code of your country.

### Reply 2:
Yeah few do.The main point to say is that current draw/current drop can be vast if e.g. the internet goes down, or when power comes on after an outage.Consider it like factory machinery running 35kW but can go all on and all off at the same time.However, the other big difference is that it will draw that power 24/7 non-stop when there are no problems, unlike most circuits anyone sets up.So certainly the circuit must not be designed like a typical circuit assuming that peaks are rare.

### Reply 3:
If you are having the power company bring in new service for your miners, you should let them know that you expect to be using 30KW continuously. At least in the US, standard residential service that gets installed these days is 240V 200A. But if you actually tried to use close to the full 200A continuously you'd probably end up killing power to your whole block... they only size the transformers for average use, and the transformer that you are likely sharing with multiple neighbors probably can't handle even a single house using all of its 200A continuously. 30KW might use up nearly all the continuous capacity of the transformer you and your neighbors are sharing. Big difference between peak and continuous.Also, if you are lucky enough to have 3 phase power available at your pole, you may be able to get a cheaper commercial rate. Where I live it costs less than half of the residential rate to get 3 phase commercial.

### Reply 4:
This sounds so strange to me lol, But I understand why. In my not so ""capitalism friendly country"" electricity is subsidized, it's super cheap that the peak and continuous load is almost identical, in the summer, ACs will be on 24/7, and in the winter electric heaters are on almost 24/7 too, so when the power company install any transformer or wiring, you never hear them talk about what's peak and whats continuous, it's crazy when I compare the situation here to the other countries.Also another note, I see people in telegram talk about having 277v, not sure if that's just in the U.S or elsewhere, but that 277v range isn't mining-friendly either, many folks are stuck with 1-2 MicroBT models that can take 277v.

### Reply 5:
Well, since my buddy doesn't know about bitcoin mining, and didnt seem to interested in listen about them... Maybe I should of worded my request differently. I should of asked for help on the setup. He said he knows how to do the box and everything, but do i want outlets, or pdu. I seen people have an ac display meter, where does that go before or after breaker box.I'm looking to setup some s17s up to 10. So basically, its just add breaker box, i can add ac display meter, what gauge wires for outlet 8,10 gauges? then just a Basic 200V-240V/30A, (10) Outlets pdu? Not other goodies? I just mine with gpus till now.what about a fused disconnect box like what you would use for a hot tub: that be for extra safety?Also i asked the electric guy when he came over several times about drawing 30k watts, he kind of blew off and was like it will be fine, that why i kept asking. I think cause the way my lot is setup (double lot), we have a transformer that is being unused, lucky me.

### Reply 6:
You are lucky that you have an unused transformer, so you can get 30 kW, of course, if you agree with the power company. This company will install the main input circuit breaker for you (with your requests, it would be better if a 3-phase 63A). The rest of the wiring can be done by your <truncated> you from?

### Reply 7:
Well at least go take a look at the transformer on the pole, they are normally mark<rest of thread truncated>
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    ""hardware_name"": ""outlet"",
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    ""hardware_name"": ""voltage protectors"",
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    ""hardware_name"": ""MCBs / fuses"",
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    ""hardware_name"": ""transformer"",
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    ""hardware_name"": ""s17 miners"",
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    ""hardware_name"": ""breaker box"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""fused disconnect box"",
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]"
16022,"Date: 2018-11
Topic: NastyMining Solar Project
### Original post:
Congratulations on being able to rase enough capital to start this project.I have no doubt that this will end up being a very successful project!

### Reply 1:
This is awesome ! enviromental friendly bitcoin mining.Well done OgNasty, this is a huge step forward for all NastyFans.

### Reply 2:
Wow! Great Job. Happy to be a Nasty Fans!

### Reply 3:
Very cool indeed!

### Reply 4:
Congrats with your project!I wanted to become a member of the nastyfans.org but it looks like all the seats are already taken.Can you provide a link to where I can visit the online auction to see if any fanclub members are selling seats? Because I haven't managed to find one unfortunately.

### Reply 5:
You can purchase seats using the online auction at nastyfans.org as stated in the OP.

### Reply 6:
WoW great!Are these solarpanels now part of nastyfans?I mean, who paid for them?

### Reply 7:
Is this an exclusive thing or what is nastyfans anyways? are you trying to operate a cloud mining thing? I think you should've done this from at least 2 years ago, I'd like to see a similar project where all the trusted and reputed members all together running a business where community could rely on their credibility to deliver what they promise, but seems like no one cares. shouldn't this be in services to get more visits?

### Reply 8:
The AC Modules provide power to NastyMining. I paid for them.Anyone can be a member of NastyFans, which was established in 2012. There is plenty more information available about NastyFans in this thread: <link>

### Reply 9:
Congratulations OgNasty, really cool addition!

### Reply 10:
Very glad to see that this project is getting to an almost finalized stage! Good job!

### Reply 11:
Really cool project!!!Thanks, Ogs.But I'm just waiting for the solar statistics.

### Reply 12:
Very cool. I just moved to Arizona, so this may be in my future!

### Reply 13:
The first thing that went to my mind is to ask why do they name it Nasty? But never mind, all I really want to say is that this project is awesome. I am really a fan of mining farms who are using sustainable alternative energy such as taming the power of the sun. Solar Technology is a great way for saving electricity and this is why I love this project. I am interested to invest on this company and I hope there is an online site wherein we can apply even though I am thousand miles away from their area.

### Reply 14:
This is cool to see. The more alternative renewable energy sources that are used, the more sustainable Bitcoin becomes.

### Reply 15:
You sir have done you research the equipment you selected is the best of the best. I look forward to seeing the system getting installed and seeing Nasty Mining moving ""Green""

### Reply 16:
Thanks. I tried to go with the best available option.

### Reply 17:
I installed 35 of those panels.. I currently have 4500 KW hours credit with Con Edison in Bronx, NY

### Reply 18:
Great project guys!You should also check out <truncated>

### Reply 19:
I also find the name Nasty to be something off or odd but given the reputation of this group and once you realized that they are into something nice then we realize that the name is just there to get our attention and to be unique. In a world of common brands and names, having something that can stand out is something to be considered as imperative.Anyway, I do find this project of suing solar power to be a good move so that if this project can prove to be profitable then we can expect more similar project in the coming days. The power of the sun can be exploited to gain the power of the cryptocurrency called as Bitcoin....a great combination.

### Reply 20:
Does Con Edison have a true up date? Eversource just paid me out about $0.03 per kWh for 500 kw. They do this once a year. 0.03 is a paltry amount considering they charge $0.18 per kWh. I wouldn't want to see you lose your credits

### Reply 21:
very niceI have found solar power to be really reliable.Way more reliable the bitmain s9's or r4'sBuysolar and I now have 3 avalon 721'sand 2 s9'sand r4 in our solar array venturehe also has 2 s9's for himself along with a s-7 for a total of 82th. Would have been more but lots of dead s9's.Good luck

","[
  {
    ""hardware_name"": ""AC Modules"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""solar panels"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""bitmain s9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""r4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""avalon 721"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s-7"",
    ""hardware_is_owned"": true
  }
]"
11210,"Date: 2022-09
Topic: koi miner Release the latest mining machine C16 Max 113TH/s
### Original post:
Koi Miner is a mining machine brand under the US listed company AGM Group Holdings. The founder is a veteran player in the field of bitcoin mining. He has entered the mining field since 2013. In 2015, he has begun to develop and manufacture TSMC 16NM BTC chips and mining machines. The company is very low-key in the industry. It has been concentrating on the research and development of Samsung 10NM and Samsung 8NM chips and mining machines for the past four years. It will be officially launched as Koi Miner in 2021, becoming the first echelon of BTC Miner manufacturers in the industry.At present, the BTC Miner C16 series products that Koi Miner has produced on a large scale have reached 30W/T performance. Although there is a gap in energy efficiency ratio with BitMains S19 series and Whatsminers M50 series, they are technically at the same level because BitMain And Whatsminer uses TSMC and Samsungs 5NM process respectively, while Koi Miner is currently SMICs N+1 chip process. It is believed that if Koi Miner can achieve the industrys highest level of 20W/T on the 5NM process.<link>

### Reply 1:
Considering we are nearing the end of 2022, a little late eh?

### Reply 2:
Really? <link> UnixhashUnixhash <truncated> Co., Ltd. Headquartered in Shenzhen, China""Does AGM Group Holdings know about their new partnership with Unixhash <truncated> Co., Ltd.? PS. I like your about page with a background image full of people doing NOTHING. And certainly NOTHING related to Unixhash <truncated> Co., Ltd. Headquartered in Shenzhen, China.

### Reply 3:
The website OP share is likely one of those scam sites claiming to resell several types of mining hardware from different manufactures as I see that they also claim to have Whatsminers, Goldshell Miners, Antminers, Avalonminers etcMembers should completely avoid such untrusted online resellers.

","[
  {
    ""hardware_name"": ""C16 Max 113TH/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""TSMC 16NM BTC chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Samsung 10NM chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Samsung 8NM chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers M50 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BitMains S19 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Goldshell Miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalonminers"",
    ""hardware_is_owned"": false
  }
]"
23339,"Date: 2020-09
Topic: Antminer S17 Pro Power_Lost
### Original post:
Hey guys,I Need help with my Antminer S17 Pro. After it tries to set the Voltage to 21.0 V it puts out the Status: Error_Power_Lost. First I tought it is the PSU. But after running it with another the problem is still the Same.What can I do to find the Issue ?Thank you

### Reply 1:
I had a similar problem with my S17e. I figured I'd change PSU but problem persisted. Which concludes that it must be control board. If you have another, test with it. Otherwise keep power cycling it and it might work eventually.

### Reply 2:
I still think it's more of a power-related issue, are you sure you tried a working PSU? OP, if the miner isn't under warranty, open the PSU and give it a good dusting, and then remove two dashboards and keep only one plugged in, start with keeping chain 0 and then try, if the problem persists then remove chain 0 and install chain 1 alone, do this for the 3 boards, there is a good chance that one of teh hash boards is casuing this issue.Also, you must try the obvious basic troubleshooting which is reset and flash a different firmware.

### Reply 3:
Let's say I believe him that he tested with new or already good (tested) PSU. Then it would practically be impossible to be anything else. Either control board or connecting cables. I doubt hashboards have control units that can directly talk to PSU - that is why there is control board in middle of them afaik.But yeah, he should totally try different firmware.Also, it would help a lot if he tells us how old the unit is, when did he buy it, how long it worked for him, in what conditions, at what hashrate and have previous owners ever had this problem before (if he is not the first owner).Would be helpful if OP knew what triggered this event. Maybe it was blackout or power surge?

### Reply 4:
so if i have a running s17pro and a dead s17pro.and i moved the psu from the good one to the dead one.and it does not turn on and mine.gives the same error .what do i do next.i take the dead psu move it to the running unit.if the unit runs the issue is not the psu.this means controller boards or hashboards. or connecting white wires.next step for me would be move the controller from the dead miner to the good minerif the miner works it is not the controller.i would then pull one connecting wire from the dead unit.put it to the good unit.if the good unit works it was not the connecting wire 1i would leave the swapped wire 1 on the good unitthen use wire 2 from the dead unitalong with wire 1.if it runs add wire 3.at this point if the good unit runsyou have tested the psu from the dead unityou have tested the three white units from the dead unit you have tested the controller from the dead unit.all workso now do fan 1 then fan 2 then fan 3 then fan 4all that is left is hash boardsdo them one at a time.yeah it sucks as you may need to do 1 psu swap dead to good1 controller swap dead to good3 white swaps one at a time dead to good.4 fan swaps one at at a time dead to good.3 hashboard sw<rest of post truncated>

### Reply 5:
You make perfect sense, many things in these miners are hard to be explained because they don't make sense, but I have personally had issues that did seem to be PSU related and ended up being hash boards related, I initially thought of it the way you do now, it's pretty simple, the control board controls both the PSU and the hash boards, so any power related issue must be PSU or control board, but well, shit happens.I encoured a similar power issue on a T17, I don't remember the exact error in the kernel log, but it was ""power xx error"", I tried a working PSU and a working control board and that didn't fix it, I played with the hash boards and the miner worked, it turned out that one of the hash boards was causing the issue, the miner worked perfectly with 2 boards.What I did next was installing that ""bad"" hashboard on another T17, and guess what? it worked without an issue, I installed the hash board which I took out from the second T17 on the first T17 and it worked as well! do I have a technical or scientific explation for this? No, and i am sure even Bitmain themselves don't.

### Reply 6:
Thanks for your help guys. I do the troubleshooting as you said. The Power_Lost passed away ( I have no clue how) but I found out that the hashchains maybe caused this error. I put the chains in another working Miner and found out that all three hashchains were dead. 1-2-3 0 Asics 0 Asics and 40 Asics. I had to contact the seller, I bought them used and this one never works good from the beginning.Thank you and keep the good work up, other miners needs your help too

### Reply 7:
I want to thank you for followup. So bad hash boards it is.

### Reply 8:
I got another Question. Can hashboards get too cold ? Its 12 c / 54 F now in my area. The big fan blows air from the outside directly inside to the miner inlet fans. After I let one miner blow up the hot air in the one miner with the Issue,<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17e"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Dashboards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hash boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Connecting cables"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  }
]"
11189,"Date: 2022-07
Topic: What is the going rate for BM1397AG Asic Chips for S17+
### Original post:
Getting Quoted around $25 per chip with MOQ of 10 from alibaba.Is this a reasonable price?Any other recommended outlets?

### Reply 1:
I think its a fair price compared on zeusbtc price that I found here <link> take note of shipping fees.Also I suggest try to buy on other sellers there some sellers on alibaba offers $12 each chips or in aliexpress like this one below.- <link>

### Reply 2:
you can buy failure hash board s17+ or t17+ and scrap it.but be careful that hash board Intact and most of heat sinks be on chip.by this way you have more than 20 chip and other parts of hash board with lower price.

### Reply 3:
I don't recommend you buy a faulty or scrapped hash board to get the BM1397AG chip. Because most chips have been oxidized or damaged during use. Even if there are good chips, you need to clean and tin these chips before use, and some chips will still have unstable hash rate even after tin plating. After all these complicated and time-consuming operations, you're not necessarily going to get a good working chip. If the connection to the heat sink is poor, it will lead to poor heat dissipation and may even burn your entire hash board.

### Reply 4:
I the other hand do recommend you use reclaimed ASICS. Given the age of the Antminer 17 series, its impending obsolescence and the retail price of these chips, theres two driving factors with regard to repairing these Particular machines. First you want it back up ASAP and secondly you want it done as cheaply as possible. You dont want your ROI to exceed retirement. Fix your broken chain and ignore everything else to get your unit back on the line, do you want coin in hand when the value goes up again. If is has a black surface that wont take solder, use S9 thermalsetting adhesive. Low Cores, no Cores, if its passing the hash data, run it. Theres only one rule when reclaiming silicon, the diode resistance values must match closely the average expected values of the others around it(Excluding the first and last chip); its a batch/bin/silicon lottery thing. Dont touch anything approaching or exceeding the average by 0.1V. Take notice of the top and bottom irregularities of the T series, theres a pattern and its normal.A Hashing ASIC is two things, a collection of math cores and a communications watchdog overhead circuit. Your board only goes down when communications are damaged. When<rest of post truncated>

","[
  {
    ""hardware_name"": ""BM1397AG Asic Chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hash board s17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""t17+ hash board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer 17 series"",
    ""hardware_is_owned"": true
  }
]"
23574,"Date: 2021-05
Topic: Antminer T17 issue - Socket connect failed: Connection refused
### Original post:
Hey guysI've just set up four T17 miners, three are working fine but I haven't been able to get 1 to workI've tried all the basic troubleshooting. Any ideas on what else it could be?Kernel log is below. I'm new at this so not too sure what I should be looking forThanks!Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> 0 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0<rest of post truncated>

### Reply 1:
It looks like there might be something wrong with the hash board connected in chain 1 (usually data cable port J1).

### Reply 2:
Please use the code tag to post kernel log, it looks terrible this way.It appears that this miner might have mixed hashboards with different EPROM data, what you should do is try to run the miner with 1 hash board at the time, or use custom firmware like Vnish which ignores the EEPROM.

","[
  {
    ""hardware_name"": ""T17 miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""data cable port J1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""custom firmware like Vnish"",
    ""hardware_is_owned"": false
  }
]"
23126,"Date: 2019-11
Topic: antminer s7 & s9  jihack
### Original post:
Hy my 2 antminer s9 mine for someone else.my 2 antminer s7 mine only 75% for me, and a second boards 15asic mine for hacker .pls helpthys is copy form tab monitor in s7, in kernel tab is empty.Code:Mem: 72224K used, 438328K free, 0K shrd, 0K buff, 39992K cachedCPU: 0% usr 9% sys 0% nic 90% idle 0% io 0% irq 0% sirqLoad average: 0.48 0.60 0.32 1/75 2200PID PPID USER STAT VSZ %VSZ %CPU COMMAND1048 1047 root S < 159m 32% 5% /usr/bin/cgminer --bitmain-dev /dev/bitmain-asic --bitmain-options <truncated> <truncated> --bitmain-hwerror --version-file <truncated> --queue 8192 --api-listen --default-config <truncated> -T2199 2198 root R 2148 0% 5% top -b -n 1397 1 root S 3340 1% 0% <truncated> <truncated> 1 root S 3324 1% 0% /usr/bin/ntpd -p /var/run/ntp.pid -g362 1 root S 3064 1% 0% /usr/sbin/lig<link> -f /etc/lig<link> 1 avahi S 2728 1% 0% avahi-daemon: running <truncated> 355 avahi S 2728 1% 0% avahi-daemon: chroot helper1047 1 root S 2616 1% 0% {screen} SCREEN -S cgminer -t cgminer -m -d /usr/bin/cgminer --bitmain-dev /dev/bitmain-asic --bitmain-options <truncated> <truncated> --bitmain-hwerror --version-file <truncated> --queue 8192 --api-listen --default-config <truncated> -T344 1 root<rest of post truncated>

### Reply 1:
Use a clean PC or fresh installed OS then use the program recovery for s9 from here Antminer s9 Control board program recoveryDo this offline after you download all files to make sure no connection between the miner to the internet.After you flash it with SD card download the latest version of s9 firmware that has anti-virus capability you can find it from here below. - Latest firmware for Antminer s9Now, check again if someone still hijacking your hashrate. About your s7 I don't think if there are issues like this that someone could hijack a few ASICs from your s7 miner.Try to hard reset the miner by holding IP reporter/reset button for 15 to 20 seconds then release and let the miner restart <truncated> the PSU from the socket if required)Then after that change the root user and password before you connect it to the internet.

### Reply 2:
hy, appriciate for help. You right the s7 have a burn out board, and the cable comunication burn. go to hell. The s9 i make this : ip report hard reset - after reboot the virus is there, no control to the configuration. The miner is now orking only whiht sd-card in , and the jumper moved. If is remove the sd-card and put the jumper for normal ---the miner is stolen. (is the same firrmare instaled and the name is changed.In one mine is have a bord whiht no SC card reder , i tried to chang the controler and is work but my controler it was c4 and now is xilingthansk for helpi see on youtube russian tipe wiht a greet ideea , but not anderstend all the movie (i translate only writhing not sound ) <link>

### Reply 3:
Do you mean that the s9 miner after flashed with sd card and put back the jp4 to normal your hashrate still hijacked?Did you upgrade it to the latest version through WebGUI or through a browser?If you did it already well maybe your router is infected. Try to follow this guide: Viruses, malware and remote attacks on Antminers How to prevent and remove them?

### Reply 4:
I am pretty sure I have seen the exact same hacked firmware that mines on Jp.nicehash , and I am pretty sure if you follow every single step I give you, you will be able to fix your miner.1- Use the Ip-report button method to reset the miner ( no other method will work ) please make sure you read how to perform it and do it right.2- Right after the miner turns back on from the reboot flash bitmain firmware ( prepare your DHCP table or AngryIP so that you log-in and flash the miner as fast as possible, try to do it in less than 10 seconds)3- If the flash is successful ( you can tell from the firmware version displayed in the miner's status page) change the miner's log-in password ASAPplease follow these steps religiously, for the second step it's always best to have a tab with your IP range ready so that all you need to do is write the new IP addressCode:<link> of course the firmware needs to be put in either downloads or desktop if you are using windows, it's best to have it in which ever folder opens first.

### Reply 5:
I don't understand why you come with this ""as fast as possible, try to do it in less than 10 seconds"" instruction. The correct way to get rid of malware, is not letting it in in the first place. If you boot a linux computer, disconnected from internet, and plug the miner DIRECTLY to it, you can perform this safely without expecting to win a race against malware.Hoping that your LAN is somehow slow enough to not infect you in time is not wise at all.OP should disinfect all miners this way, and not allow any non linux computers in the LAN.

### Reply 6:
if you don't understand, then maybe you should ask I agree, but shit happens, and shit needs fixing.it's not a race, and connecting the miner to a linux<rest of thread truncated>
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  {
    ""hardware_name"": ""antminer s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""antminer s7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OS"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  }
]"
16559,"Date: 2023-08
Topic: Stratum v2: After 10 Years, The Most Used Bitcoin Mining Software Gets Facelift
### Original post:
Mark the Stratum v2 release as a victory for the open-source bitcoin community. For a decade, it has been the software of choice for miners to interact with pools and with the bitcoin protocol per se. While still necessary, bitcoin mining pools have a centralizing effect. With Stratum v2, miners will get to construct their own blocks. And thats just one of the innovations, although the most talked-about one.<link>

### Reply 1:
Some time ago, i read Stratum v2 specification and found out this feature is optional. I doubt pool would bother support this optional feature, unless many miner want to have a say about constructed block. But we know most miner is driven by profit they could make.

### Reply 2:
Lets see if it gets any traction in the real world outside of big corporate miners. I can see it slowly taking over as the manufactures start using it by default, but until you hit that critical mass point I see most people still using V1, I know a lot of people never even update the firmware on their miners unless thy wind up having an issue with something. For the small miners, there really is no advantage to all the additional overhead that it needs. And as with anything, the more features you add to something the more issues you will probably wind up with. -Dave

### Reply 3:
That is so trueFeatures of V2 seem to be cool, but there are so many things... is it all expected to be configurable from within each individual miner? Or is it expected that we'll have a LAN device that aggregates traffic and provides configuration interface?Upd: I see they have different connection options on their website. Is there a way to monetize this so-called ""translation proxy"" that is basically what I mentioned above? Maybe there is a commercial opportunity, but still I don't know why would anyone buy such device.. there is no real financial incentive.

### Reply 4:
V2 has little to do with the original Stratum.A miner should do only three things : get shares from a pool/node, process the work, report results.Oh, and monitor itself & provide a GUI. Fine, that's 5 things. Period, end of story.IMHO having the low power CPU's in a miner deal with more than the absolute minimum of work is a horrible idea. Then there is the matter of changing work w/o it being obvious to the owner of the hardware. Ya know - like the security hole known as extra-nonce aka XNSUB which allows the miner to change work on-the-fly to mine other coins (DevFee hashing is 1 example) -- as well as do other things in the background if it connected to a bad-actor pool.Everything I've seen points to V2 being solely for the benefit of pool operators and not the miners themselves.

### Reply 5:
Firstly - block constructing was called GBT. Yeah years old idea.Some pools supported GBT for a while ...No one ever actually wrote code to use the transactions supplied - GBT died.It's death was a good thing.Stratum already has the option to request the transactions, so you can verify the merkle slices, but not change the ones used.No one uses GBT or that option in stratum for a reason:What it actually leads to is 2 things:1) about 2000 times more data per works sent, and thus about 2000 times more data per day per miner.Yeah so instead of about 15MB a day per miner per pool connection, you are looking at about 30GB per day per miner per pool connection.This also means on average more than 3MB of data per work change instead of less than 1500 bytes.Networks do not transfer data instantly.2) transaction biasThis is completely against the ideals of bitcoin.People have tried, on multiple occasions, to put this into bitcoin. Fortunately they've failed doing so.Adding it to pooled mining is a really bad idea.----The initial problem with stratum was the fact that the work difficulty was separate from the work.Slush wouldn't fix this coz it meant changing his pool code. Very slack of him<rest of post truncated>

### Reply 6:
What we see on the site stratumprotocol.org on its main page it says this: Stratum V2 is the next generation protocol for unified mining. This increases security, increases the efficiency of data transmission and reduces the requirements for the mining infrastructure. There is no question of any individual creation of blocks, the protocol simply improves the interaction between miners, the pool and the blockchain to increase the efficiency of joint mining.

### Reply 7:
The blocktemplate creation by miners is an add-on feature, it's not the backbone of Stratum V2, the miner firmware needs to implement it and the miner owner needs to choose whether to use it or not, many people are skeptical about this, some people think things could wrong and pools would start losing blocks due to miners adding unverified transactions by mistake or for any other reason.Personally, I think it's too early to judge, I believe the extra encryption and using <rest of thread truncated>
","[
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""LAN device"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""translation proxy"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""low power CPU's in a miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner firmware"",
    ""hardware_is_owned"": false
  }
]"
22817,"Date: 2018-11
Topic: S7 problem
### Original post:
hey guys.Im having problem with my S7... when i turn it on, the red light is ON... after a few seconds it turned off but the green light led turns ON (static always on) and then the system gets stuck and doesnt allow me to see anything about if it was temperature or something else... can u help me? also one time i pressed for a few seconds the botton it has at the left side right next to the LAN and it made the S7 work... but for only 25 minutes after the red light led turned on again.

### Reply 1:
found the problem... the mid card is not in his socket (i dont know if its just a socket or its broken.. can anyone tell me how to place that card in place? or what to do? thank you

### Reply 2:
Before opening get Bitmain's permission to do it and look at hashing board. Yes this sounds stupid... but they have it where if you open up without permission you void warranty. So big deal when dealing with possible RMA.But send in a ticket and email and see if you can get that permission.

### Reply 3:
<link> suggestions? thanks

### Reply 4:
Can you post copy and paste the kernel logs to <link> looks like you get low hashrate according to the image? it might be a hashboard issue or maybe your PSU is not giving enough power.What exactly the miner's problem?If you can post the kernel logs here we can review and find if what is the miner's issue.

### Reply 5:
First problem is your controller is not reading your hardware properly.It is showing 48 chips per board which isnt possible. There are either 54 or 45 chips per board and neither will function with more than 3 chips not functioning. I would check what firmware you are running and make sure it is the proper one for your boards.

### Reply 6:
I have the abitude to repair the S7 ... and 3 card that shows 48 asic does not surprise me !!!Sufi of a single card down and these are the 3 cards that shows 48 ... even if 2 are intact!THE first test to do and connect only ONE card and see if it works well, so about 1.6 TH and 45 asic (or 54) ... If ok, test another card ... (always meter out tenssion before unplugging and reconnecting a card) ...

","[
  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mid card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": true
  }
]"
16075,"Date: 2021-06
Topic: Solar Energy Bitcoin Mining
### Original post:
Has anyone had success using Solar energy for bitcoin mining? Im wondering if its even a viable option using the s19 Pro mining equipment. Ive done research and maybe someone can come up with better results. I spoke with a solar salesman and he says to run 1 s19 pro, Id need $25k worth of equipment for a 24/7/365 usage. Any other thoughts or options that someone else may have thought of?

### Reply 1:
Depends on where you are and how much sun you get.Anyone these days can put a 10kW solar system on their roof with a battery.If you average 8hrs a day of full sun that's close to 3kW 24/7 so somewhere close to what it would need.The price of the system will depend on where you are, who you talk to and who you get to install it.$25k seems a high price Though that depends on what $1 is in what country you are.

### Reply 2:
$25K sounds about right, depending on where you live and how much sun exposure your roof gets (though there are ways around the latter). For 3kw 24/7 you need a 6+kwh system (probably closer to 8-9 in many locales, which will push you into the $30K+ arena) and a battery with enough juice to provide 3kw on average for roughly half the time. Those are top of the head estimates, you can use calculators found online to get more specifics, but in the extreme rough estimate range, if you are having a system professionally installed $25K seems about right for that load.If you want to figure out installing one yourself, on the other hand? That can probably shave $5K off it, more if you can get the parts wholesale, but it does mean being confident working with household wiring and dealing with local codes and permits. Also note that this is all based on a battery system. If you live somewhere that will credit you for solar energy generated, you can skip the battery which will save you $5-10K, but you'll probably still pay in the $20-25K range to cover it.So a 7-9kwh self-install without a battery that should cover all energy in a reasonably sunny locale? Rough guess would be around $15K min<rest of post truncated>

### Reply 3:
This solution is workable, we have some client from USA that buy antminer as solo miner running his miner from a solo energy farm, working very well.

### Reply 4:
This forum is full of informations<link> example..type ""solar"" in the search bar and you'll find what you're looking for

### Reply 5:
Did some calculations. If you get about 28KWp of solar panels and 24KWh storage, 25.000$ would be a really good deal. The conditions I got would amount to roughly 35.0000$.28KWp produce roughly 28000KWh/a -> 3250Wx24hx365d = 28470KWh/a

### Reply 6:
Most parts of the world use factors from 5 to 7Ie 30kwatt/ 5 = 6kwatts 24/7/365 on a grid tied setupor 30kwatt/ 6 = 5kwatts 24/7/365 on a grid tied setupor 30kwatt/ 7 = 4.3kwatts 24/7/365 on a grid tied setup.battery setups are more costly and batteries simply do not last long.In NJ USA a 30kwatt is big for a home.but 20 kwatt could fit on a decent roof.out lay would be more than 20k but less than 35kit would run three s17pro set to 40th and 1000 watts.giving you 120th endlessly.you need the correct after market firmware but it does exist.so you could do 120th for free which is about 30 usd a day.NJ ,USA has many incentives the array would pay off in under 6 years.

### Reply 7:
The storage is crucial. During peaking hours you won't consume 20KW. When you run lithium between 20&80% they last easily 10-20years.There are also saltwaterbatteries. They last more or less indefinite since you can replace the anode by changing the saltwater.Just not sure if they are available in the US...Underclocking S19pros is a very interesting consideration!

### Reply 8:
pretty much done

### Reply 9:
Grid tie in the USA is better than any battery setup.In the USA.You get various incentives in the correct states.The grid acts like your battery.IE IN NJ use a factor of 6. So 20k is 3.33kwatts you constantly burn 3.00 kwatts with the clocked lower s17 pro and the left over goes to the grid. So in full sun 3k goes to the gear 17k reverses on your meter.When sun goes away you tap the credits.That is why a 20k system is good for 3.0-3.33 kwatts 24/7/365Now you also get credits from the state of nj for 10 years in a row.So the 30k you paid for the 20k watt system get paid off in 10 years.The mining earnings are your profit.But this is all due to state law somes states attack solar and protect oil.NJ attacks oil and protects solar.Batteries are not really viable as they are an extra cost.They take you off the grid and you get lower incentives .

### Reply 10:
i think mining with a solar energy comes with a great risk because you can not calculate freely the consumption or power of the specific voltage. i recommend the old fashioned way it is more reliable and applicable

### Reply 11:
Dude we have been mining with 700 x 220 watt panels for years.reliable and works fine.we caught the 2017 runupwe ca<rest of thread truncated>
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23205,"Date: 2020-02
Topic: Antminer S17+ problems
### Original post:
Good night forum friends My situation is as follows, I bought an Antminer S 17+ 70ths and for 1 month it worked well but now recently it works for 2-3 hours and then the hash rate starts to decrease and then loses the connection. I tried to upgrade, reset, change power cables, network and nothing. Today I found that I already have only 2 hash boards active Can someone help me?Thanks

### Reply 1:
s17+t17+s17et17edo not run well. Most likely you will end up screwed unless bitmain releases better firmware.

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13774,"Date: 2022-05
Topic: Problem of using bfgminer with pool.btc.com
### Original post:
Hi, I follow this tutorial for BTC mining <link> can see ""Stratum from pool 0 detected new block"" at the output but I don't see there is any credit on my dashboard at <link> how can I find out more information for debugging?

### Reply 1:
When you see that message that means that someone in the network found a block, not you.You won't see any credit on your dashboard, because someone else found the block.

### Reply 2:
To be specific, unless you are mining at a solo pool - in which case you only get BTC when your miners find a block - When someone on your pool finds a block, the pool pays you based on how much work you have done.So if you're just running with a few Compac F USB sticks, you are not going to see much credit added when a block is found.

### Reply 3:
OK, I just watched the video you posted. You're wasting your time and electricity.The video explains how to connect to a pool using the GPU from the Mac M1 to mine Bitcoin with a custom build of bfgminer for mac. This is useless in 2022 where pretty much all the mining in Bitcoin is done with ASICs.Here's a screenshot of the video that shows the hashrate you get, which is about 100MH/s:To put this into context, look at one of those tiny USB miner, the Compac F:These tiny miners give you about 300GH/s. That's three thousand times higher hash rate than what you get from the M1.You won't get any payouts in any pool using a Mac. You simply cannot mine Bitcoin without an ASIC in 2022.

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23610,"Date: 2021-07
Topic: Antminer L3+/S9 without fans. Will it work?
### Original post:
Hi,I would like to ask you if anyone tried to use the Fan simulator to eliminate the original loud fans. Remove the hash boards from the case and add external quiet fans to reduce noise. Like a 2fans/hash boardantminer will be in an air-conditioned room where it is about 16 degrees.it will work? has anyone tried this solution?Thanks

### Reply 1:
They will work if you can bypass the ""fan sensor"" and give a fake signal but mostly they don't need any device(Fan simulator) just to bypass the fan check. You can bypass the fan check on different firmware like in Braiins OS. Their official thread can be found here <link> you can read about disabling fan from here <link>

### Reply 2:
As BitMaxz there are some firmwares that will allow you to run without fans.However, the way the boards are designed you do have to get a large amount of air moving over the heatsinks.You need a bit of positive air pressure moving through them.-Dave

### Reply 3:
Waste of money.braiins lets you run fans very low on the s9s.Just lower freq. and the fans to 20%the correct bitmain firmware lets you lower the freq and the fans on the l3cost is zero and they are much quieter.

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22631,"Date: 2018-06
Topic: URGENT ADVICE NEEDED - MINING ANTMINER NEW SEA SHORE
### Original post:
HiI am moving my house near sea shore. Is it safe to mine there? Its just 3 Kilometers (1.86 Miles) away from sea. Everything get rust very fast there.Is it ok, or find alternates like remote mining?Please reply soonest, I need to pack fast.

### Reply 1:
I live in a very humid area and there is nothing I can do about humidity for my miners. However, I think S9s are protected against corrosion, as the only rusty parts on my miners are the grates for the fans.I think you will be ok

### Reply 2:
I would definitely not recommend. The miners I work on are all only 5-10km from shore and the rust seems to affect everything. Quickly I noticed the fan grates only rusting, but then even the fans themselves and then the hashboards start to rust dead as well

### Reply 3:
Air filters by the intake and outlet fans in a big must. It will keep some moisture out a dehumidifier would be good if it is a very small mine but you just got to keep up with maintenance and check the psu cables on the miner and psu for bad corrosion as they will short and or burn

### Reply 4:
For a general discussion, how long does it take to cause problems in humidity? Has anyone had failure due to keeping a miner outside in an area with heavy humidity? I.e. heavy humidity such as tropics, or FL?It's getting to the point where any hardware older than a year may need to be dumped and new ASIC's bought as the specs just get better and you save on electric? Unless you have Solar? Right? So If it takes a year, does it matter?My guess is in heavy humidity with salt air it can corrode in a few months? But in non-salt it should last longer and at least a year, but I really do not know. Looking at the internals. Excluding the fan coolers etc. you do have boards which should not last in humidity right? I run mine now in HVAC controlled environment, but I have thought about running mine outside (controlled and covered) a few hundred miles off the shore line in PA that has humidity, but no salt air. Just thought it was worth the discussion?

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    ""hardware_name"": ""Solar"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""HVAC controlled environment"",
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22773,"Date: 2018-10
Topic: How to stop a GPU from throttling?
### Original post:
Set Powertune to +20% and rise the temperature limit to an insane level.

### Reply 1:
try playing with""temp-cutoff"" : ""95"",""temp-target"" : <truncated> : ""85"",in cgminer.config or bfgminer.configand rise intensity as high as possible

### Reply 2:
I think you may find the throttling beyond a certain level is controlled at the hardware level - not sure on this though

### Reply 3:
try not overclocking it as much/more fans/cooler room temp lol

### Reply 4:
lol im sure the heading has changed since i posted that lol

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    ""hardware_name"": ""bfgminer.config"",
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23771,"Date: 2021-11
Topic: Avalon A1166 pro 81T can not work perfectly. it's work around 62-68T.  (pic)
### Original post:
I bought 2 brand new Avalon A1166 pro 81T. Before buying the seller sent me a working clip. And it's fully mined 81T.when i received the machine Found that it works only 62-68T. I don't know what happened. and now trying to fix itCan anyone recommend me? please <link>

### Reply 1:
I paste here the log, maybe someone can help <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':40,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1205512.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[21027] <truncated> LW[20961949] MH[20 15 12] HW[47] DH[11.082%] Temp[29] TMax[76] TAvg[65] Fan1[4231] Fan2[4182] Fan3[4132] Fan4[4145] FanR[55%] Vo[328] PS[0 1197 1312 232 3043 1312 3315] PLL0[7747 1 1 6171] PLL1[8222 1 2 5695] PLL2[6591 0 5 7324] GHSspd[61846.59] DHspd[11.006%] GHSmm[69599.20] GHSavg[62275.42] WU[869977.60] Freq[416.66] Led[0] MGHS[20276.03 20396.92 21602.47] MTmax[74 76 71] MTavg[65 67 64] TA[360] Core[A3201] PING[171] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[390 408 428 448] SF1[390 408 428 448] SF2[390 408 428 448] PVT_T0[ 64 65 67 69 70 68 68 69 68 69 68 67 67 69 71 69 69 70 66 74 70 74 71 67 65 69 67 69 70 64 65 68 69 71 70 66 67 71 71 71 70 66 65 66 66 68<rest of post truncated>

### Reply 2:
I can fix it From the person who sold me the machine, she took good care of me.Solution 1. Download the latest FMS software from Canaan website.2. press Aging button on the software to reset voltage and frequency parameters of the machine.*** Notes are a guide for people with problems like me. *** <link>

### Reply 3:
Other possibility is that it was simply showing the wrong hash rate on the miner.You should also check the pool (if the pool works properly)The miner average hash rate is from when cgminer started, and if the clock on the miner moves forward after cgminer starts, that will show the average hash rate lower.

### Reply 4:
Even without FMS tool, you can fix the issue by going to pool configuration change the working mode to higher performance instead of running it at a normal hashrate. Look at the logs that you post above the difference between two logs under WORK MODE the first log you have WORKMODE[0] and the 2nd log shows WORKMODE[1]So the 2nd one is running at high speed and the first one is not set the high-speed mode.Here's the image as your reference if you don't know where to set it

### Reply 5:
Yes, both machines are set to different operating modes.The Machine set to normal mode Because if I use performance mode it restarts itself every few hours, I don't know what caused it. but what i think I don't know if it's right or wrong. The machine should work according to the specs. in normal operation modeor it's not for avalon

### Reply 6:
I am having the same issue.Can you please explain what you did in FMS to fix it. I cannot see any 'Aging' option ( ""press Aging button on the software to reset voltage and frequency parameters of the machine"" )<link> have checked it is in 'High Performance' mode.

### Reply 7:
Link Download >> <link> Aging Button >> <link>

### Reply 8:
Thats very unusual. I downloaded the same program from here <link> that software, the same version but called <truncated> does not have the Aging button.Thanks for the link !

### Reply 9:
I have the same problem as you, and am looking for a fix. After reading the article, I was very happy. Thanks alotI also asked the person who sold the machine to me, but they didn't know how, and told me they could send it back for warranty. But if the warranty takes too longI tried to follow your instructions, the speed went up to 81T and then decreased to 65TBelow is the <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':64389,'Remote <truncated> Blocks':7,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1213480.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[4346] <truncated> LW[4312900] MH[67 34 66] HW[167] DH[2.273%] Temp[25] TMax[73] TAvg[64] Fan1[2506] Fan2[2506] Fan3[2484] Fan4[2490] FanR[36%] Vo[316] PS[0 1191 1265 190 2407 1268 2607] PLL0[2555 1047 1492 8826] PLL1[1702 94 256 11868] PLL2[2993 701 1360 8866] GHSspd[65655.37] DHspd[2.273%] GHSmm[67307.34] GHSavg[64799.82] WU[905243.04] Freq[402.94] Led[0] MGHS[21022.56 <rest of post truncated>

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11035,"Date: 2021-11
Topic: Are S7 blade heatsinks titanium?
### Original post:
I was looking at old s7 boards, and noticed that the short heatsinks looks like titanium ? are i misstaken or is it titanium ?

### Reply 1:
ROFL...That out of the way, no. They common low cost and very <truncated> aluminum. Not much higher cost and less conductive Ti. Some of the heat sinks are anodized and their colors can range from golden, light or dark bronze, or normal silvery aluminum depending on what BM could get a hold of at the time.

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    ""hardware_name"": ""heatsinks"",
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22925,"Date: 2019-04
Topic: Antminer ducting
### Original post:
I've been experimenting with ducting for purpose of reducing sound and later directing heat. I have a s9i and a t9 with insulated 6"" flexible duct. Straight run right now and have been playing with length to monitor the sound.I am experimenting with length but have not introduced change in direction. 3-10 feet have no noticeable negative effect on miners temps or fan speed. Temp and fan speed have both reduced since introducing ducts. The tube has nearly silenced the high fan noise. Still hear the intake fan, but its a hum vs. squeal.I haven't bought a y yet and i have one booster ready to put in use. I'm looking about 15ft distance from miners to exit point.I am wondering if I bring the two ducts together with a y and a booster would that handle continued length of 6"" flexible ducting to direct heat outside. If this is possible I just buy the y and assemble. Option 2 bring ducts together but booster both ducts before y and added length.My fall back option is booster both ducts before adding length to both.

### Reply 1:
I was looking at this adapter<link>

### Reply 2:
Which Y you are planning to buy to assemble? Do you have a sample image?Ducting may reduce the noise but the noise still high If you want to reduce the noise I think much better to build a noise reduction with a cooler jag like the image below. So that the noise only inside the cooler jag.

### Reply 3:
Please do not commit this mistake. IF you are going to use a box, do NOT attach the ducts directly to the fans. You can attach them to the box, but leave the miner and PSU free inside, you specially do not want to do what that picture shows. Airflow must ALSO go around the miner, otherwise you will burn the controller. You have been warned.This adapter is not needed at all. If you follow my advise, you don't have to worry about such thing. You can simply make two 6"" holes to the box on each side instead and attach insulated ducts to those, no adapters.Wood and insulating fabric works very well:Notice the ducts are not attached directly to the fans, this is important, airflow must also go around the miner, not only inside the Asic boards.Think something like this:

### Reply 4:
This is how i am set up.Box fan > wire shelf with 2 miners & psu (1 per shelf) > (6"" fan adapter > 6"" insulated duct)/miner= 2 exhaust ducts.I was looking at introducing the y to combine the exhaust ducts with inline booster fan to push exhaust added distance, but I think I'd have to increase duct size rather than continue with 6"" duct. So rather than the 6x6x6 y i would need 6x6x8 or 6x6x10 with appropriate booster.Last night i tried lengthened ducting to make curve out window on one line. = fan speed increased and temps rose slightly. I'll add booster and try that tonight.

### Reply 5:
Oh, you were thinking something like this? Also consider more holes per miner, such as two for each one. In your box it would be 4 holes per side for the two miners instead of forcing it with a Y.Perhaps a key factor is reducing the curve radius, avoid 90, try a gentler radius like in that picture, like it was a railroad curve

### Reply 6:
Is there a particular length recommended for the ducting? Are supplemental fans required to help make up for the resistance (think breathing through a straw vs freely)? Also, how much space around the ASIC should I leave inside the box?Many thankspotificate

### Reply 7:
You'll have to monitor the temperatures or measure the cfm at the ends to find out. I guess if they are long enough you would indeed need supplemental inline fans, it depends on setup. Also you don't have to go with 6"", you could go bigger and that might help, or twin, etc.Please try to make sure there is airflow around the miner as well.

### Reply 8:
The length can be anything from 1m to 10m , the longer the less noise the less airflow, it pretty much depends on how cold the intake is going to be, if you using a Y junction for all ducts then you will probably need a secondary fan to help out. But again this is not a fixed science, you need trial and error.

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    ""hardware_name"": ""6x6x6 y"",
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    ""hardware_name"": ""6x6x8"",
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  },
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    ""hardware_name"": ""6x6x10"",
    ""hardware_is_owned"": false
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23329,"Date: 2020-09
Topic: Mining on 277v
### Original post:
We have been informed that you can run most current generation miners on 277 volt power, without stepping it down. Does anyone have any information or insight on this?

### Reply 1:
The ratings should be on the device and in the manual and they will specify the primary driving side with some lower and upper limits and usually a frequency as well and driving the unit outside of these parameters is not recommended and can result in the malfunctioning of, and damaging the hardware.

### Reply 2:
bitmain apw12 psu reads 200-240volts this is for the s19 gen or current gen<link> apw9_14 psu reads 200-240 volts this is for s17 or lasts years gen<link> may be able to do more volts with the a1166 pro but I don't have a link for the psuthe whatsminer p21 psu claims 277 volts see link<link> if you use a whatsminer m20s it should be okay

### Reply 3:
It depends on what do you mean by the current generation, if you mean the latest generation then that's wrong info, Bitmain's gears like the S19 and S19 pro won't run on 277 volts, Microbt M32 and most of the M30 series require 176-264V.As far as I know, only the following miners work on 277V : M10, M20, M20S, and M21S.In other words, any miner that uses one of these PSUs p21 and P11.Old gears like the Antminer S9 can pretty much use any PSU that has 10*6pin cables or more and outputs 12v, there are many 277V PSUs with those specs, so that is an option if efficiency isn't a factor.

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    ""hardware_name"": ""bitmain apw12 psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""apw9_14 psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""a1166 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatsminer p21 psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatsminer m20s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Microbt M32"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M30 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M10"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M20"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M20S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M21S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSUs p21"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""P11"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  }
]"
10727,"Date: 2018-04
Topic: (Review) Halong Mining DragonMint T1 16 TH/s, 1600 Watt (SHA-256) ASIC Miner
### Original post:
(Review with clear pictures can be found @ <link> a small intro about me:I live in Europe and had some previous experiences in Bitcoin mining. I mined In the earlier days of Bitcoin in the year 2014 and really enjoyed the experience. I am a true believer of Bitcoin, crypto and blockchain technolgy. So in the last years I stayed informed and started mining again with GPUs.I was looking around for ASIC-miners (SHA-256) but outside of Bitmain there was not really anything new. Until I found the website of Halong mining with their Dragonmint T1 (16 Th/s). After searching the web I didnt find much info because they just started their company. So I decided to try and contact them to get some decent info and get in on that ASIC-miner. I got in contact with the people of Halong and they answered all the questions I had at that moment. I can only speak from my experiences but communication was a true pleasure, fast and friendly. A few months later, I received a shipping notification from DHL and only 5 days later it was delivered on my doorstep. At this moment I have the Dragonmint T1 running for 10 days. <link> Halong Mining Dragonmint T1 16 TH/s:I run the Dragonmint T1 with a Myrig power <rest of post truncated>

","[
  {
    ""hardware_name"": ""Halong Mining Dragonmint T1 16 TH/s"",
    ""hardware_is_owned"": true
  }
]"
10980,"Date: 2021-08
Topic: help with error message s17pro
### Original post:
I recently purchased a s17 pro and I'm having trouble getting the thing to work. the rig will only stay running for 5 or 15 minutes then power down. I posted below the error that keeps coming up. pleas help ya favorite boomer dad [2021/08/05 00:19:57] INFO: Power ON[2021/08/05 00:19:59] INFO: Starting FPGA queue[2021/08/05 00:19:59] INFO: Initializing hash boards[2021/08/05 00:19:59] INFO: chain[2] - <truncated> 00:19:59] INFO: chain[1] - <truncated> 00:19:59] INFO: chain[0] - <truncated> 00:20:14] INFO: chain[2] - 48 chips detected[2021/08/05 00:20:16] INFO: chain[0] - 48 chips detected[2021/08/05 00:20:17] INFO: chain[1] - 48 chips detected[2021/08/05 00:20:25] INFO: Start-up temperature is 26 C (min -15 C)[2021/08/05 00:20:25] INFO: Switching to manual fan control (100 %)[2021/08/05 00:20:25] INFO: Changing voltage from 21000 to 16400 mV <truncated> 00:21:26] ERROR: <truncated> chain[1] - Voltage is different, cur=16905 mV tgt=16400 mV[2021/08/05 00:21:41] ERROR: <truncated> chain[1] - Voltage is different, cur=16917 mV tgt=16400 mV[2021/08/05 00:21:55] ERROR: <truncated> chain[1] - Voltage is different, cur=16924 mV tgt=16400 mV[2021/08/05 00:21:56] ERROR: <truncated> Failed to<rest of post truncated>

### Reply 1:
I would say you need a new psu.

### Reply 2:
new psu is almost certainly need.do you have proper power 210 to 240 volts?if you do. try opening gear and using only 1 of the three hash boards.if that works try using two hash boards.more likely the psu is dead. if the power is 210 to 240 volts.once in a while you can run a board or two boards if the psu is weak.finding a new psu will be very very very hard.good luck on that.

","[
  {
    ""hardware_name"": ""s17 pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hash boards"",
    ""hardware_is_owned"": true
  }
]"
23956,"Date: 2022-05
Topic: Antminer S17 Pro blinking red fault light
### Original post:
New Antminer S17 Pro arrived today and plugged it in. It boots up, I can access the web UI, I set my pool, and I set it to ""Low Power"" mode for testing. After hitting apply, the fans spin up -- similar to the S9 -- and I'm expecting to start hashing about 30 seconds later. Instead, after about 60-70 seconds, the red ""Fault"" light on the machine starts blinking. Fans keep spinning, web UI still works fine, but it's not hashing. I've verified that it has an internet connection using the network diagnostics tool in the Antminer Web UI. And the pool isn't down because I have other S9s hashing on it right now.If I put it in ""sleep mode"", the fault light turns off -- although it still isn't hashing. Trying to set it to Low or Normal power mode causes the blinking again about 60-70 seconds.I captured the entire kernel log here: <link> I don't see any obvious failures there, but any insight is appreciated.

### Reply 1:
Try to reset the miner to refresh the miner's program then set up it again make sure the pool URL has no extra spaces. If you don't know how to reset it you can follow these steps below.- Hold the IP reporter button for 15 seconds then releaseIf the IP reporter button doesn't work try the reset button there is a small hole near the ethernet so you need a pin or any small stick to push the reset button.If the above doesn't work try to set the miner to static IP and add DNS and try again. If all methods above don't work you need to flash the miner with the latest version. - Antminer s17 firmware here,

### Reply 2:
How long have you actually left the miner on ? also did you set your pool settings ? new miners come without unconfirmed as far as the pool settings are concerned, unlike old batches where Bitmain has their worker details pre-set , so set the pool correctly and leave it run for 30-60 mins and update here, my T17 took forever to start mining, once you get used to S9 , everything else seems faulty at first, so allow more time.

### Reply 3:
Latest bitcoin Antminers are bad quality. Ill have same problems , kernel log shows it has initialized fine but doesnt mine and then reboots after while. It is most likely one of your hashing boards died. At least i disconected one and it was working fine after. Sick of these asic miners, installed 5 of them in my mining farm 3 of them have issues after 2 weeks.

### Reply 4:
Hi - What issues are you facing exactlly?

### Reply 5:
In the network tools section, can you ping Yahoo.com?

","[
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    ""hardware_name"": ""Antminer S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""asic miners"",
    ""hardware_is_owned"": true
  }
]"
13572,"Date: 2018-01
Topic: Antminer monitoring software
### Original post:
Hello all,Can anyone make any recommendations on server farm monitoring software for antminers? The main ones I have found on this site so far seem to be geared more towards the home miner monitoring a small number of miners. They have too many bells and whistles that are unnecessary on a more industrial scale. I am looking for something to do basic fault monitoring on a large number of units (1000+). Is the unit running? Is it overheating? Has there been a hardware failure? I dont need altcoin mining, pool switching, profit calculators, or a fancy cluttered UI. Avalon has something very similar to what I am looking for that they call AMS (Avalon Monitoring System). It shows number of expected vs running units, has a color coded temperature diagram to zero in on heating issues quickly, and shows errors based on the RPi error codes. With all the homebrew creations out there I am hoping someone has a few suggestions for me.Thanks in advance!

### Reply 1:
Did you try Minera? <link> Forum: <link> how to monitor Antminer: <link>

### Reply 2:
or this <link>minera, is about the best one to use for all most any miner . just showing options. it he has no pi or is only running windows. or wants to see it on a windows/linux PC without using a browser. .

### Reply 3:
I have the Minera image downloaded and on an SD card that I plan on testing but from the screenshots and interface it looks like it has too much going on for what I need. I also couldnt find any information on people using it to monitor a large number of machines, or even a cap on the number of machines it can monitor before resources become an issue. Is there a default IP that it is on? I do not have a monitor available with HDMI so I need to be able to connect to it remotely from the start and when I booted the system on the RPi it did not capture an IP from my DHCP server.

### Reply 4:
<link> that it has remote access it shows temps has no cap on the number of machines, I'm a ware of , can be used with out a browser remotely with ssh or you smart phone with a app with windows or lenox on a pi type pc. and a few others things is very light weight, minera is more a controller type software that works best as such atm Mich said he is adding some really nice stuff for business like yours it will take him a month or two to write and fully test which is good because everything he has released so far has just worked he is all ways there after every new release and will reply with in hours or with in that day if not hours or has so far.I use both minera and the one i linked and awesome miner.AWESOME MINER: the only problem with it is even using it remotely the remote box has to run windows to use it, but it has a lot of nice stuff but its limited kind of to windows .to use how you want to which it does everything you want it to but only on a windows box atm but can be viewed any place under any OS.<link> minera you can turn all that off if you don't need it, don't let what you see fool you .!!! all most all that stuff he shows can be turned off that's just to sell it etc<rest of post truncated>

### Reply 5:
Thank you all for the replies. I have tried Minera but it doesnt seem to have the features I need as of yet. I had an S7 fan die and found no warnings or notices of any kind with Minera. In the settings all I can find is scheduled restarts, nothing about active monitoring of the units. cryptoGlance seems to not be scalable in the way I need. I cant imagine trying to monitor thousands of miners each with their own little widget open.AwesomeMiner is just not a financially viable solution for the amount of units I have to monitor.All seem to be quality polished products and if I was just running a couple miners at home they would both be effective solutions.The search continues!

### Reply 6:
Can I know your needs? I'm really open to listen from someone with a lot of network miners to monitor. What would be your perfect dashboard? How do you image it? And if I can ask, what could be the budget you would pay for that?

### Reply 7:
Apologies for the delay in my response. I wanted to give Minera a try for a while before responding to your questions. There are a number of things incorporated into Minera that I feel could be removed completely for an industrial version of the software. Local miners (cpu mining in particular has no place anymore), local pools, profitability charts, and live prices all have no use for what I do as I monitor thousands of units on a daily basis. The data im given needs to be streamlined and pertinent to my setup.Things That do matter are(in no order):overview of the total number of active units (including how many units per RPi for Avalons)unit hash ratesall temperatures (antminer and avalon both have multiple temperature readings and from my testing it only shows one of the numbers on the dashboard)error rateslast share time (to determine how long a unit has bee<rest of thread truncated>
","[
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    ""hardware_name"": ""Antminers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon Monitoring System (AMS)"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RPi"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7 fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalons"",
    ""hardware_is_owned"": false
  }
]"
23811,"Date: 2021-12
Topic: Avalon 1246, Problems with 1 hb
### Original post:
Hello all, after searching all forums for information, I understand that the device is new to the market, I received a batch of 9 devices, two of which over time lost one board, it began to burn red in the web panel. the log of one of the devices, the second log will be soon. This problem is seen by many on other forums, and it's mostly on the H0 board. <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':2,'Local <truncated> <truncated> Blocks':26,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1299472.0] NETFAIL[76 87 4752 4763 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 2 ] Elapsed[14887] <truncated> LW[9725423] MH[0 181 140] HW[321] DH[28.275%] Temp[18] TMax[79] TAvg[65] Fan1[0] Fan2[3955] Fan3[3987] Fan4[3998] FanR[50%] Vo[318] PS[0 1199 1275 201 2567 1276 2768] PLL0[0 0 0 0] PLL1[2562 3837 4746 2775] PLL2[1095 1130 3634 8061] GHSspd[58381.66] DHspd[1.886%] GHSmm[59677.60] GHSavg[57168.01] WU[798627.92] Freq[357.27] Led[0] MGHS[0.00 28114.87 29053.14] MTmax[-273 73<rest of post truncated>

### Reply 1:
Hi,it gives you the ECHU code 131073 in the cgminer API log.I have explained that particular code here:<link> usually a sign for a faulty hash board.Your cooling fan connected to fan0 is most likely broken.It shows zero rpm speed in your log.

### Reply 2:
Agree with the above post it seems the first hashboard is defective according to this HASHS[1 0 0] and the fan maybe is not connected properly replugging it might solve the issue.Another thing that I noticed is POOLS[0] meaning the pool is bad and the PING[238] that's too high replacing it with other pool servers will solve this case but you need to choose the right pool server with low ping if you are living in the US you should use a US server or if you are living in ASIAN countries then you should choose ASIA pool server to get a low ping.

### Reply 3:
Hello ! I'll try to look at the connection to this cooler, maybe something really fell off and the board just won't start I am in EU and the asics are connected to the network via a 4g modem, and always all the old batches of s9 s17+ m20 e.t.c worked fine.

### Reply 4:
Your 4G is not optimal latency-wise.Do you have a spare cooling fan to install?

### Reply 5:
Are you connected to the EU pool server?I think even you have a 4g connection the latency shouldn't be around 200ms if your miner is connected to the right server but if you are connected to the US then the ping you have is right. All your miners will work but you will still experience some network failure and unstable hashrate to the pool. Where actually do you mine and what exact stratum pool you are connected to?

","[
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    ""hardware_name"": ""Avalon 1246"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cooling fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""4g modem"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""m20"",
    ""hardware_is_owned"": true
  }
]"
22369,"Date: 2018-02
Topic: S9 one chip has lower hashrate, 100 HW/hour while others have 0-2
### Original post:
It's not much of a loss, it's 13.3TH/sBut still, why does one chipset constantly mine with a lower hashrate?This is what I get in an hour <link> is the first ASIC I'm actually hosting by myself, so don't be harsh if it's something simple

### Reply 1:
The hardware errors you are showing are pretty meaningless. Normally you need to see tens of thousands an hour to be worried. I would just try a different firmware, it looks like your autotune is not doing its job properly.

### Reply 2:
I sold this unit to iluvbitcoins.There is no actual fault in the miner, but the hash board in chain #2 doesn't have as good quality ASIC chips as the two other boards have.Thus it is not able to perform as good as the two other boards do.The variety in the chip quality is an issue in the 16nm chip production and that is why Bitmain has produced so many different hash rate models.As fanatic26 mentioned, that HW error value is not an issue.

### Reply 3:
Ive never seen autotune firmware that sets every hashboard to exactly 650mh like that before. That is why I recommended a firmware change.

### Reply 4:
That's because it is not a autotune firmware.That miner is a non-autotune version and the firmware is the latest available non-autotune firmware version.

### Reply 5:
That's what I figured, thanks anyways.Makes sense.The miner is good, my heater broke down, so it's not only making me money, it's keeping me warm right now too lol

","[
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board in chain #2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heater"",
    ""hardware_is_owned"": true
  }
]"
23400,"Date: 2021-01
Topic: Antminer S9 troubleshooting?
### Original post:
No logs = No guessesbut it could be internet drop out from nicehash and have zero to do with your end.

### Reply 1:
PLEASE learn how to use the Forum correctly...Use the # code function to put all that into a scrollable format.Requested mods to fix that wall of text....edit: don't know if mods or OP did it but fixed

### Reply 2:
Ja, as I recall there is is a 1k character limit to it. No matter what, far more readable now

### Reply 3:
Hello Everyone.I am just getting my feet wet in the mining process. To get started I snagged a couple of old S9's and built a small GPU rig. Just trying to get educated. Time for some education.....This morning I noticed that one of the S9's had stopped processing. One of the three ""chains"" was showing zero hash and my NiceHash monitor was showing no work. After a bit of poking around and a couple of reboots I was looking at the kernel log and see what may be an indication of the problem. Hopefully we have an Antminer Guru in the house.... Here is a snipet from the log:Well...... I have lost my clipboard...... And, the last reboot cleared the log. The machine is running now....I hate it when issues appear and then mysteriously heal themselves. I would rather find something broken and fix it. That leaves me with at least a little confidence that the problem is actually fixed. My sense of urgency has passed but I would still have someone look over my logs and let me know if anything is amiss. Any volunteers? Any input is appreciated.S.PS: Gotta love the Antminers this time of year. I can work out here without a heavy jacket now.

### Reply 4:
Thanks for the input. I have two of them connected to the same network switch. Same Internet connection.The failing unit stopped mining again at 2:00am this morning. I can't access it from here but will endeavor to get logs later this morning.When I arrived and connected to the S9 it appeared to be running(shows hash rate on 3 boards) but the fault light is on and NiceHash shows connected but zero work since around 2:00am. I collected the logs at 10:00am.Any input is appreciated.Well, I was going to attach a txt file to my post but either it is not allowed or I am not smart enough to figure it out. Sorry for the novel.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <<rest of post truncated>

### Reply 5:
So sorry. I am used to forums with more functionality. I am used to being able to post an attachment. Lacking that I did my best. Just not used to having to manually put code in post. I'll figure it out if I am here for a bit.It looks like the log got truncated.Here is the lower portion:Code:read PIC voltage=910 on chain[7]Chain:7 chipnum=63Chain[J8] voltage added=0.0VChain:7 temp offset=0Chain:7 base freq=637Asic[ 0]:600 Asic[ 1]:600 Asic[ 2]:600 Asic[ 3]:600 Asic[ 4]:600 Asic[ 5]:600 Asic[ 6]:600 Asic[ 7]:600 Asic[ 8]:600 Asic[ 9]:600 Asic[10]:600 Asic[11]:600 Asic[12]:600 Asic[13]:600 Asic[14]:600 Asic[15]:600 Asic[16]:600 Asic[17]:600 Asic[18]:606 Asic[19]:606 Asic[20]:606 Asic[21]:606 Asic[22]:606 Asic[23]:606 Asic[24]:606 Asic[25]:606 Asic[26]:606 Asic[27]:606 Asic[28]:606 Asic[29]:606 Asic[30]:606 Asic[31]:606 Asic[32]:606 Asic[33]:606 Asic[34]:606 Asic[35]:606 Asic[36]:606 Asic[37]:606 Asic[38]:606 Asic[39]:606 Asic[40]:606 Asic[41]:606 Asic[42]:606 Asic[43]:606 Asic[44]:606 Asic[45]:606 Asic[46]:606 Asic[47]:606 Asic[48]:606 Asic[49]:606 Asic[50]:606 Asic[51]:606 Asic[52]:606 Asic[53]:606 Asic[54]:606 Asic[55]:606 Asic[56]:606 Asic[57]:606 Asic[58]:606 Asic[59]:606 Asic[60<rest of post truncated>

### Reply 6:
But missing a ton of important information. The only thing that seems strange in the small portion of the kernel log you posted is this Code:Fatal Error: network connection lost!But then you mentioned thisThe worst ""pool"" to be troubleshooting a miner with is Nicehash, I suggest you switch to a proper pool at least until you figure out what is going on with the miner, use Viabtc as it's very stable for the most part, it might not be your taste but should at least give accurate results while you are troubleshooting.If you can't post the complete kernel log, use an external website and just paste the link here, I forgot the website the folks here use, but it's something like ""pasteit"" or ""pastein"", just google it.

### Reply 7:
Um, bulk of the log is here as their post #3

### Reply 8:
It's not complete either, while this kernel log seems stra<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""GPU rig"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""network switch"",
    ""hardware_is_owned"": true
  }
]"
23546,"Date: 2021-04
Topic: Antminer Control Board Issue
### Original post:
So I got a S9 and powered it up to make sure it worked and it worked perfectly, but next day I noticed that only 1 of the 3 green leds in the control board is on, and the miner is no longer visible in the network. I made sure to disassemble it, clean it, restart router, check every cable but still no luck. Also tried flashing it with an SD card but after changing the jumpers I get the same behavior where the miner is powered on, but its like the OS fails to boot or something.Any ideas appreciated

### Reply 1:
As an incentive, I will send my first 24h earnings to the person that helps me fix this without replacing the board (if thats allowed by the mods).

### Reply 2:
Free advice, wipe and install an original Bitmain firmware from the Bitmain site, to ensure it's not a hack firmware that's the cause of your problems.

### Reply 3:
Over the course of 3 years, I helped countless people troubleshoot and fix their mining gears, some folks here have been around years before me, most are helping out for free, there is absolutely no reason to incentivize the fine gentlemen here with money.Just to confirm that you are not doing something wrong, please show me the files you used to flash the miner, and where did you download them from? also, what was the size of your Sdcard.in order to troubleshoot your issue more accurately, we need to confirm that you did indeed Sdcard the control board correctly, sadly most people don't. , also, do you happen to have another miner or this is the only one you got?That's good advice, but his gear is nowhere to be found on the network, how do you expect him to install the firmware when the control board is defective?

","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain firmware"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining gears"",
    ""hardware_is_owned"": false
  }
]"
23793,"Date: 2021-12
Topic: Does any have Steven Chan's contact details, Miner working in Oracle until 2020?
### Original post:
I would really like to share a message with Steven Chan cryptographer from Oracle, who was mining in 2010.Please make contact..Thx

",[]
22366,"Date: 2018-02
Topic: S9 13.5 TH vs. 14 THs
### Original post:
Does anyone know where/how the firmware determines if an antminer is a 14TH/sec vs. a 13.5TH/sec box?Is it one of the jumpers on the control card? A setting in some configuration file?It FEELS like the firmware finds that information somewhere, then autotunes the available cards to come as close as possible. If it autotuned each card to its maximum, I would think we would see a spectrum of different speeds as ""ideal"" ones.

### Reply 1:
It runs the Auto-tune on each card and adds the three together for the total THs. Faster hashboards will give faster miner, not firmware.

### Reply 2:
There are default settings in the PIC controller on each hashboard and the firmware extrapolates the expected speed from there.

### Reply 3:
Thank you!

","[
  {
    ""hardware_name"": ""antminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PIC controller"",
    ""hardware_is_owned"": false
  }
]"
11252,"Date: 2023-01
Topic:  Most reliable miner, in price range Antminer 17 serie
### Original post:
Not S17 They're too unreliable.

### Reply 1:
Would you recommend miner model from another company, whatsminer Ebang, Avalon...,?

### Reply 2:
Star far far away from Ebang! As many unfortunate people here have found out they have zero support for the miners.Whatsminers (MicroBt), Avalons (Canaan) are excellent.

### Reply 3:
Thanks for that knowledge! Some special model you would recommend and not from whatsminer and Avalon?

### Reply 4:
What about the company Innosilicon?

### Reply 5:
Why not choose S19

### Reply 6:
what are the requirements of pc for mining

### Reply 7:
Please read <link> - mainly point-3...Summary: A PC cannot be used for mining BTC

### Reply 8:
To expensive for me.

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    ""hardware_name"": ""Whatsminer"",
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  },
  {
    ""hardware_name"": ""Ebang"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S19"",
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23245,"Date: 2020-04
Topic: my bitbury b8 stop mining
### Original post:
my bitfury b8 mined perfect and suddenly I stop doing it, in the machine log appearsevent file write error_ <truncated> No space left on deviceI'd appreciate your help

### Reply 1:
I don't have much knowledge about this miner but the error seems a program issue.You can try to flash it with the SD card image that you can find from their support below.- <link> SD card flashing guide can be found on their manual or use this link below.- Bitfury B8 Manual Guide

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  }
]"
11300,"Date: 2023-05
Topic: GekkoScience   FS7 Compact low speeds
### Original post:
hi everyoneI have the GekkoScience FS7 Compact, problems I have is the slow speeds I am currently using a Usb 3.0 hub which I am trying the miner with I have read there are some issues with using some USb 3.0 hubs wanted to ask the community if that is one of the issues with using Usb 3.0 hub. find screen shots attached, looks like a it`s not powering all miners<link> in advanced to everyone taking time to look at my post really appreciate it groke

### Reply 1:
Take a look at the dedicated thread for the stick here:-<link> regular usb hub without external power is a waste of time with these sticks. Really you want the Gekko Hub to be able to get these sticks running well

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    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""regular usb hub without external power"",
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10823,"Date: 2019-06
Topic: Protocube Crypto Mining Container
### Original post:
Neat. There have been a few people asking about these in the last couple of months. I'm curious to hear more about the custom power distribution setup that doesn't require the expensive plugs or PDU's? Is this some sort of hardwired solution as that might make miner maintenance a pain. I like that you guys are offering some customization based on needs for cooling and ventilation gives a much wider range of where these can work. The racking it mentions is custom, are they still adjustable? In case someone goes from say an M10 to S17's or something else as the miners are coming out in quite a variation of dimensions lately. Feel like sharing ballpark pricing?

### Reply 1:
Thanks for your comments.Yes - One of the things that we did to reduce costs as well as space that is taken up by PDUs was to hard wire our power cords. The other advantage is that we have the cords cut to length for the given area that a miner would go. This also reduced the amount of cord that would have to be coiled up or left hanging which would be in the way or block much needed air flow. As you mentioned however, we are not locked into that as an only solution. We know that there will be customers that just won't like that and will prefer PDUs or outlets. And that is ok, because we can do it however you would like it.My goal is to build something that your happy with and can depend upon.The racking is custom. It can be made to be adjustable, but typically our clients have specified what they wanted and that is how we have built them. This enabled our client to be able to maximize all of the available space for miners and power supplies. Our cost still comes in very comparative to if we were to go to a Costco and buy shelving that would take up too much space and not allow for the same number of miners.Those are all very good observations.Price range. As a ballpark figure, a 4<rest of post truncated>

### Reply 2:
I was going to ask the price but $135k? I mean it looks well done and all but.. man you could literally built a 50x120 building for that much money... and have stuff left over for miners yet. Really?

### Reply 3:
Yes you may be able to build a building for that. But that would not include 1 megawatt of power distribution inside of that building.(If it does, I would love to know where you are buying your electrical gear) Power distribution is the highest cost. Then if you were to include cost of stretching your conductor through the building to the point thatit can be used will only continue to increase costs.I will be the first to admit that there are advantages to each solution. The electrical gear inside of our container is all UL listed as well as rated at 415v.I have built a couple of bitcoin ""data centers"" in existing buildings, 6MW worth, and I can tell you that by the time we got power into where it needed to beneither of them came close to what we can build these containers for. I am sure there are some exceptions. But that is one of the reasons that we decided to get into this business. Thanks for your comment on how nice they look.

### Reply 4:
The Protocube is either a 10', 20' or 40' mobile crypto mining container.We have built 11 of the 40' units, each with 1 MW of power distribution inside.I would love some feed back concerning our units.The website is <link> can build them to your specifications -With or without exhaust fansEvaporitive coolingWarm air recirculation (for cooler climates)Thanks for your time -Steve -Here are some pictures -<link>

### Reply 5:
I mean I like the design and everything but yea that's a lot. It costs usually for wiring and running power about $2000 to set up 400 amps. Cheaper as higher. 2000 amps about 10k. So i'm not sure where the 135k is coming from.

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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""exhaust fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Evaporative cooling"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Warm air recirculation"",
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]"
16046,"Date: 2020-04
Topic: The winter mining setup
### Original post:
I normally vent my miners exhaust out my old gas furnace chimney, tonight though I ran the exhaust hose junction to the basement door and taped it down to vent into the house. Electric heat, so it cancels out nicely glad your set up worked out for you!

### Reply 1:
I'm currently looking forward to get my hands on Canaan Mining Warmer. (<link> be great to test it out, give it a thorough review, and I have a good friend who could use the heat it produces during the winter time.

### Reply 2:
Good job. Yeah every bit of heat helps through the winter months. I posted this as it's a shift from the norm for people in my situation. Maintaining this one for me is pretty straightforward. The miners put out enough heat to keel the basement in the high 20 degree C range. Which heats my main level floors up a bit, I leave the basement door ajar to help out a little as well.Biggest concern was my pets hence the insulation and mesh screen on the I take and exhaust.For the summer set up it's the opposite you I really need to get the best out of the space. Myself my miners exhaust tk withing 6 inches of the window in my garage. I have a thick wire mesh with good spacing for airflow that I use as a lower panel for my main garage door. A couple screws and locks and its secure for the summer.Those are going to be a neat idea. Ideally they will be quiet so they can be placed directly in living spaces. I do have a few cold spots in the house still due to poor ducting designs/renovations over the last 100 years, so I have been looking for options. What can i say though it is nice making unprofitable (or nearly so) gear useful and profitable again.

### Reply 3:
nice, it never gets cold here for something like this, i get lucky enough that I can shut off the ac unit that feeds the room my miners are in -lol that saves me some electricity

### Reply 4:
I seem to recall someone using or planning on using it to dry food in the past, not sure whether it was fish or beef jerky. There was an old thread about what to do with miners other than mining with them here: <link> from 4 years ago.

### Reply 5:
Not at all.With the miners in the basement the noise is indistinguishable upstairs, when the family is awake and active.In the evening I can make out that steady hum. I did download a free app to measure the sound. Right in front of the miners I got 60-65 DB. 15 feet away in another section of the basement with no doors, i get 50-55 DB.I'm actually looking to maybe move my 841 inside as well. Seeing how well this is working out. It will have to be tuned down though as they don't cope with the heat nearly as well. Basement is a toasty 29 degrees some days.

### Reply 6:
That threads a pretty good read... some trolls before they were; and a few decent ideas.I like the wood drying idea, this would be a nice way to split the mining load for anyone who still has an old wood burning stove or fireplace. Have a few inside and then a couple outside drying the wood in a shed/garage or something.I have started using a little rack in the room to give the dryer a break for towels and what not, just gotta catch them before they're like sandpaper and bone dry.

### Reply 7:
I've been mining for over a year now and also enjoy the heat output in winter. But I have recently stopped because, call me paranoid but I feel like the air these machine puts out is affecting my health. And it might not be that far fetched considering how hot they get inside the boards and chips working 100% at all times.

### Reply 8:
It's not really something I'm concerned with. The operating temperatures are well within the norms for the materials they build with. If not my miners it would be an electric heating element that is a piece of metal, with poor conducting abilities, but has a high melt point. So either way I'm heating metal and using the air to cool it .My only concern off anything harmful emitting from the miners would be in case if a fire. That goes for anything and everything in my house though.

### Reply 9:
Main effect mining in-house during winter is air get super dry.I had reading of 30% moisture, Arizona desert style.I dry my clothes around the house to help moisture the place.If you have moisture issues in your basement, mining help a lot

### Reply 10:
Well I've managed to get the house up to ~90TH/S2 x M10 units - I jumped on these a few weeks ago, for the purpose of trying to ROI the equipment faster by offsetting the operating cost in my cold season.4 741's already in place - These are now at controller setting -1For this I had to add another 30 amp circuit for the additional miners. This also required modifying my furnace ducting and switching the fan to continuous. The duct-work was really just opening up the return air on the south side of the run, and opening up the north side of the run near the miner exhaust discharge. This was easy as they were just using tin and the joists as for the<rest of thread truncated>
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11260,"Date: 2023-01
Topic: Mining farm electricity requirement question
### Original post:
hello, had a question about electricity requirements. for a 3MW mining farm, what are the usual transformer/power requirements in the US?

### Reply 1:
You get the transformer from the power company, at least the places I know. Assuming the location can be serviced with such amount of power.

### Reply 2:
If you want that kind of power you would in most cases also get a specific contract with your power supplying company. You can't just simply hook up your miners with a standard household contract. In this contract it would also be specified that they deliver up to X amount of MW to your location and at what price. In some cases it could be that it is not getting cheaper the more energy you need. Maybe the infrastructure can only provide a specific amount at low cost.

### Reply 3:
As far as I know mining operations go where energy is cheap. One of the place in U.S which is Texas has some of the lowest kilowatt hour prices in America. But in terms of transformer they used, I had no idea what it is?

### Reply 4:
But they also have a rising anger about mining operations, because of the high power draw and also the loud noises that come form mining facilities. So you should also consider that you may be not extremely welcome if you want to build a large operation.

### Reply 5:
There is nothing to be angry about, its more customers for them and the large miners install their facilities in industrial zones where noise is allowed.This is the same as any other technological industrial activity like a data center. Only fools would ban this wealth creation activity, compared to other industries it is far more clean.

### Reply 6:
Apart from just getting the transformer from the power company he can also do well to get into an agreement with an electricity company (they could set up every requirement needed) on how much power they could supply to hi. It could be on a cost effective rate based on their MOU.

### Reply 7:
Finally got to this.3MW only allows 75-80% so 3mw transformer will do 2.25Megawatts to 2.40Megawatts.Many people would want a pair of 2megawatt transformers.why well if one fries itself only the farm goes down.if you found two 2.0MVA transformers you could do 1.50 to 1.60 on each one.thus a true 3.0megawatt farm.here is one I have heard issues about availability for these.<link> one does do 480y-277 wye secondary which will work with this miner.<link>

### Reply 8:
Wiring up properly is the tricky/important part as up to the transformer it's high voltage and the power company is the one doing it.I mean without burning the building down sooner than later.

### Reply 9:
You don't need the J+ for 277V, Bitmain in their usual wisdom does not really market that they in fact have PSUs for x19 family for 277V: APW12A and APW121215g. Newer miners require the later but even the original S19 Pro 110 would work with the first all these years the model has been out... Feel free to ask them why they don't bother listing those. I don't know if there is a variant of the APW121417 for 277V, maybe there is...

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16149,"Date: 2021-10
Topic: DiffA and a blockdifficulty
### Original post:
Hi, I'm running a bitcoin loterymachine. The miner only has 4Th witch i'm running at 1Th. There is something i find hard to understand and could not find an answer to. In the admin screen of the miner it talks about difficulty and diffA. After a couple off days running the diffA sits at around 40.000.000 . After i turn the miner off it starts over again starting from 0. If i look at the difficulty of the new blocks they are <truncated> or so. Is it right that the miner needs to run for a couple of weeks to even come close of the todays block difficulty? Or i'm i compleetly wrong.

### Reply 1:
DiffA is the amount of work accepted by whatever you are mining to.If you are solo mining, it means very little.Finding a block is random, you are not working up to finding it.<link> Bitcoin your chances of finding a block in a day with 1TH is 1 in 998319.7 (i.e. about 1 in a million)<link> you are pool mining, your reward is based on the amount of work you've sent to the pool when they reward you.The miner simply keeps track of the amount of work you've done since last you started it.If you are asking about some other coin, then don't do that here in the Bitcoin area.

### Reply 2:
Each and every share you do is a shot for a block. It is an unlikely shot but a shot.As Kano said 1th is about 1,000,000 for a dayYou have 4th so if it is BTC you overall daily chance is 250,000 to 1 or basically most unlikely

### Reply 3:
Im solo mining bitcoin. So thank you for your reply'sI know the chances are very small. I like the proces and i want to fully understand bitcoin butt sometimes the proces is unclear. There is al lot writen about it butt the questions i have are not always answered. Or the answers on the internet are quit short.

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23867,"Date: 2022-02
Topic: S17+ PSU issue?
### Original post:
Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> 0 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203432K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss, 25944K reserved, 16384K cma-re<rest of post truncated>

### Reply 1:
Based on your current logs it seems a PSU issue because it gives only around 0.5v. The s17+ PSU should give around 14.5v to 21v based on its specs.Can you try to replug the power supply from the control board and test it again? If it doesn't work and you have extra s17+ you can swap the PSU to try.

### Reply 2:
SystemMiner ConfigurationMiner <truncated> <truncated> LogBooting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> 0 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203432K/245760K available (6345K kernel code, 231K rwdata, 1896K ro<rest of post truncated>

### Reply 3:
It looks like the hashboard connected to chain 0 has an issue. The other two hashboard are able to measure the PSU voltage. Make sure the screws that attach the busbars to the chain 0 hashboard are secure. If they are, then it looks like the pic microcontroller on the hashboard might be damaged, or maybe just the components between the pic A/D inputs and the voltage supply.I'd try running with chain 0 disconnected.

### Reply 4:
I also would like you to try to clean up the hashboard power terminal with sandpaper look at the red part of this image belowRub the sandpaper on that terminal and metal including the two metal/copper strips connected from PSU and try to run it again. Sometimes those parts have rust/dirt and the power can't 100% flow from PSU to the hashboard and only get a little voltage from PSU. Cleaning it with sandpaper will help to make sure they have 100% connected and to remove rust/dirt.

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23602,"Date: 2021-06
Topic: Power supply for canaan 1066 50t
### Original post:
Assuming that is the correct male plug end for your outlet, yes. The C19 end is what plugs into the miner.

### Reply 1:
That will do the job just fine. How much did you pay for the Canaan 1066 50t if you don't mind me asking.

### Reply 2:
On re-read of the link, the only issue you might run into is that the ad says the male plug has a 13A fuse in it.The A1066 50t is rated to pull 3,192w and assuming 220v that equates to 14.5A. You are going to need a larger fuse...

### Reply 3:
Hi guys.I bought a second hand AvalonMiner 1066 50t. I had known there would be no power supply cable. But I just to Confirm is it OK to buy and IEC C19 UPS / server power lead cable? I've ordered one on amazon: <link> anyone kindly let me know if this is OK to use on this miner please.Cheers.

### Reply 4:
Sorry guys for the late reply.Ended up getting a spark in to do 16a sockets. Which are great, your right the 1066 pulls far to much for a 13a fuse. Ended up burning out fuses, which wasn't good looking back.I think i paid around 1200-1300gbp at that time for a 2nd hand one, which is running perfect. Prices are simular at moment as BTC down, but for a while and in some miner price list they are still very expensive.Cheers guys for the responsesDega

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23163,"Date: 2019-12
Topic: S17 issue solved. Restored power to 3rd board. May be a common issue.
### Original post:
So, just an FYI.... happened to me today, and a friend last week.Woke up to learn my S17 56th went offline at 5am. Kernel log indicated it shut down because there was more than 0.5 volt difference between hash boards.I rebooted. Nothing.I rebooted. Nothing.Went downstairs and pulled the plug. Let it sit 5min and plugged it back in. Vroom....back in gear.Was up and running and then I got distracted by my time machine (xbox).A few hours later, I check my pool and notice I'm running about 20-25th lower than normal.Yep, the S17 56th is running about 2/3's normal hash. Log in, 3rd board not detected. Reboot, nothing. Same. Only picking up 2 boards.I popped the top off the miner. I found the same thing happened to me that happened to my friend. The rear buss bar wasn't fully seated into the 3rd hash board. It was at the slightest of angles, fully seated into the 1st board, but maybe 1/4"" raised out of the clip in the 3rd board. Pressed back into place and we are up and running like normal again.Hopefully sharing this information may help someone in the future.Pop the cover off the top of the PSU. Look in and you can see two bars running left to right, clipping into the clip atop the hash<rest of post truncated>

### Reply 1:
Pictures of this would be interesting. Any evidence of overheating on the power bus bars?

### Reply 2:
Well. I cant post pics here cuz I dont have an online pic hosting acct.No. Bar looking fine.

### Reply 3:
Darn. I'd be happy to post em on imgur and link here for you. PM me an email addy if you would like and thanks for posting this.

### Reply 4:
Pm sent.

### Reply 5:
Thanks for the assist

### Reply 6:
Up and credited. Thanks!<link>

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22232,"Date: 2018-01
Topic: New Antminer S9 Becomes unresponsive after 30 minutes
### Original post:
Trying to figure this out and could use help. I'm a new miner. Did it previously with my computer and gpu just for fun and to learn. Finally got a couple S9's. Set them both up today. They are both on 240v outlets. They are on shelving in my garage, which is currently 32*F right now. Temps of the unit are about 72, 68, and 71 when in operation. It ran great for about 6 hours. Then nothing, slush notified me my worker was offline. Tried accessing it via browser and ip, nothing. The 3 hash board red lights were out. Unplugged and replugged, it all came back. Worked for about 30 minutes. Then lost network again, couldn't access. Left it ""just in case it came back"". It didn't. Unplugged and replugged, worked again, went about 5 minutes, did again, this last time about 20 minutes. Tried resetting to factory and setup again, no difference. What am I doing wrong? Frustrating!No thermal shutdown, just after a while, it loses network connection and the red board lights go out. Power connections and data connections are all good.The boards do not have any XXXXXXX.Please Help!

### Reply 1:
Try it on 110, see how long it lasts. Did you switch power supplies with the other s9?

### Reply 2:
What Power Supply are you using? Almost guarantee this is the issue. If the PSU is good, do you have PDU that you're connecting these too? If so, what is its amp rating? 2 S9s running on a cheap 12-16A PDU will trip it and shut it down.

### Reply 3:
I thought these performed poorly on 110/120, but I'll give it a try with the problem machine. I did switch PSU's with each other, no difference.

### Reply 4:
No PDU. Sub Panel in the garage, only being used to charge my car and power the miners right now (And the Switch & Laptop). The miners are on a 240v 20 amp breaker. Voltage under load is 241v right now. The PSU is the APW3++ from Bitmain.So new development. For sake of ease, the ""problem unit"" discussed above will be #1, and the second will be #2. #1 will act as mentioned above .#2, stays online and functions considerably better. Usually #1 will have the drop outs as described above, but now, sometimes, both #1 and #2 will disconnect and cut out at the same time. Red flashing fault light. I have a laptop (Dell Mini 9 Ultra Low power netbook) on the bench with the miners as a monitoring/control computer (I've had it for years, and too slow to do much else). When the miners are offline, the netbook still has internet access. I have it plugged into the ""mining switch"" instead of on WiFi.

### Reply 5:
It may perform ""poorly"" but see if the problem follows.

### Reply 6:
When it goes down are you able to find your miners on your router or access the status page?Which pool are use using and do you have back up pools entered?Can you move one somewhere else in your house and give it a try? ( different power outlet and/or ethernet cable) Do you have a volt meter to check the output volts under load coming out of the PSU? I have a couple cheap digital LED volt meter hooked up to both my PSUs and they show 12.2 and 12.3 on each S9.Are your S9 the older ones that you can adjust the frequency or the newer ones that are auto? ( I have one of each and prefer the older ones.)Are you showing the right hash rate for your miner when it is runnng?

### Reply 7:
It seems odd that both miners would have an issue. That makes me think its not the miners but something with incoming power or internet. Are both running off the same breaker?

### Reply 8:
Update:1: Using Slushpool. backup pools are the slush pools in other countries. USA as #1. 2: I have a 240v outlet in my laundry room. I installed it with a Chinese outlet, as my wife is Chinese, and we have some appliances, I can try one there, BUT (Will get to that below)3: It's about 12.3 at full load4: Newer batches, automatic frequency. I'd prefer the older style as well. I'd sacrifice a little mining power for considerably cooler running equipment, likewise with the fan speeds. 5: The hash rates are slightly higher than advertised 13.5TH. So here's the deal, was going to try and move them, but FIRST, I was going to run a hard line to the garage (Ethernet, Cat5e). Since we had a break in the weather, we've been at -5 to -10 *F in Wisconsin here (Great for mining!!!), but yesterday was 55*F (And today we're back down 1*F), so I went for it, and ran a new ethernet cable. Had to go along the outside of the house. I was using both Powerline Network adapter to get it from my office to the garage, and a Wifi to Ethernet adapter. Each miner is on one of the devices. And they still are.Thought I'd try the Ethernet first. By the time I ran the ethernet cable, the two miners were runnin<rest of post truncated>

### Reply 9:
Cool I am glad they are working! I would not mess with them either.

### Reply 10:
Ran great until last night, wifi dropped to Unit 1, so as long as that one had lost connection anyways, I swapped i<rest of thread truncated>
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16600,"Date: 2023-09
Topic: Looking for a bitcoin lottery miner
### Original post:
Hello all,I am looking for a bitcoin lottery miner. I like the idea of mining Bitcoin but I can't afford to buy big machines because they make too much noise and take up a lot of space. The idea is to find a small bitcoin miner that is cheap (less than $1000), doesn't make noise, and still has a chance of mining a block even if that chance is low. A bit like a kind of lottery game that gives you a very small chance of winning among millions of combinations.I will then let this little miner mine for life in a corner and who knows, maybe one day he will mine a block.I exclude USB miners because it will require a computer and I do not prefer to leave it on 24/24 for security reasons.Anyone have any idea on something reliable in these criteria?Thanks!

### Reply 1:
If it is unprofitable for you to buy an ASIC because of noise or expensive electricity, then USB miners can be used with Raspberry Pi and other mini PCs. I think that when preparing the place it will be completely safe and not consume a lot of electricity, but your chances are also minimal. But any device is not eternal.

### Reply 2:
Couple of options1) Apollo BTC: <link> Find a used S9 and mod it a bit: <link> Something like a heatbit: <link> or <link> in mind there is a 99.9999% chance you are going to loose money.The cost to buy it, the cost to run it, are all going to be there.If years later you never find a block. It's money that is spent and never coming back.But....as you are looking to lottery mine, I am thinking you know that already, just wanted it out there in case someone else sees this.-Dave

### Reply 3:
Raspberry Pi (or other single board computer) could be viable option if you don't mind use Linux and configure firewall once to block most incoming connection to improve security.For multi-purpose device such as HeatBit, you'll need to check whether you can choose custom pool or not. For example, HeatBit currently only support NiceHash.

### Reply 4:
True, with a but. There are a lot of videos showing the disassembly of it.They are just S9 units in a custom case with a custom fan assembly looped through a custom wireless bridge. You can flash other firmware and a few other things to get out of their NH only setup.I really would not want to, but it is always an option. Probably should have mentioned that in the reply I made.The other option for lottery mining is also really old miners. With a little looking you can find MANY generation out units at places like thrift stores and pawn shops and such for less then the scrap metal value at this point.I picked up a pair of S7 units this spring for $5. The boards and aluminum heat-sinks were worth more then that. Put together a complete one from the both of them. Scrapped the other and have a 4th unit when running on low power just about silent mode. Unlike the S9 mod I mentioned before these would be cheaper to buy money wise but take more time in hunting one down.-Dave

### Reply 5:
Sure check this again before getting your hands into the game,if not for anything remember ""THE COST OF MAINTENANCE "". He already gave you a choice just make sure you choose wisely

### Reply 6:
Since u are gonna use the machine for lottery than you can pick any device with your criteria on ebay but like Dave said it will 99.99% give u unprofitable for anything straight from your buy and operating it. and keep in mind that you need to pay the electricity bill every month unless you have free electricity

### Reply 7:
Wow man the heater come miner? I am seeing this for the first time and love the idea. I love the ideology behind it but I am really not sure about the calculations that they have shown on the website. They are claiming that over the period of one year one Heatbit device can generate up to $980 that is just insane and doesn't add up with the mining profitability <truncated> to CoinWarz, the current profitability can only happen if we have over 100 TH/s of hashing rate with average electricity rate of around $3.00The device only produces 10 TH/s of energy and cost around 300 USD. It would take forever to get my ROI with this type of device. Either they need to upgrade the Mining Chip to Hi-end processing power or this idea or device is just cool for project purpose. Though HeatBit is considering the average price of three years, I highly doubt we have profits. We do not know the future of Bitcoin. It's volatility can either bless you or take everything away from you.

### Reply 8:
I remember seeing a thread about it in the past. Not that old so you can visit that thread and see other people's comments about the product. I guess you can argue that it is one of the lottery miner products, although from their advertisement they don't seem to think that way. You should not expect consistent profit from a product like this, stick to the old and tested ASIC or other mining rigs if that's what you're looking for imo.

### Reply 9:
Ma<rest of thread truncated>
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23408,"Date: 2021-01
Topic: 17 series hashboard swap
### Original post:
Can you interchange hashboards on 17-series miners (e.g. S17+, T17+ etc)? I don't mean mix and match between different models, but lets say for example you have 2 x T17+ and each one has 1 faulty hashboard, can you swap a good hashboard from one T17+ to the other T17+?I realise it may seem a daft question, but I understand with older S9 models, if you swapped hasboards from one unit to another you had to reprogram the eeprom on the hashboard etc

### Reply 1:
I swapped a dozen of S9s hash boards and never faced the code/product-ID problem, it only started to appear with the S9k/S9se, and moving onwards to the latest gears, you will notice that each mode has a few code numbers identified as product number, mostly 4 of them [0,1,2,3], usually, the kernel log reads that number before it does anything else, on the S17 pro this is what you getCode:2021-01-23 21:14:47 <truncated> product_id[0] = 02021-01-23 21:14:47 <truncated> product_id[1] = 02021-01-23 21:14:47 <truncated> product_id[2] = 0It's different with every miner and firmware version, but it's easy to spot, you want all 3 hash boards to have the same id, if one is different the miner won't work, based on a random (unverified) observation of my own, if you bought the same batch, your chances will be a lot higher.

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16316,"Date: 2022-08
Topic: Canaan Avalon 1246 PSU fans running fast.
### Original post:
So I have a canaan avalon 1246 81TH and I recently burnt out a power supply. Bought a new power supply and installed it and now the PSU fans are running really fast and its winter here something doesnt seem right. Can someone please help point me in the right direction should i try a different power supply, is it in the control board, or maybe a firmware/update issue. Thanks in advanced for any help.

### Reply 1:
This unit is not the same as the old model of Avalon where you can able to flash or upgrade the PMU there other might be issues why the PSU fans running fast.You might be bought a defective PSU or it maybe there is something in your unit that cause this problem like short circuit or PSU compatibility issue.What is your current outlet voltage?Can you copy the API logs and post them here maybe we can see the problem under your logs.

### Reply 2:
yeah ill have to try another power supply I got 3 of em so ill see if that one just has issues. Now something else I should add is i have the back fans spoofed and the front fans nothing. And im running a centrifugal fan thru the back. Now I did try today to hook up front fans and test with them in place if it would make a difference and it did not. Oh and outlet voltage is 240V <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local <truncated> <truncated> Blocks':24,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1203720.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[13263] <truncated> LW[13220291] MH[12 58 67] HW[137] DH[3.603%] Temp[18] TMax[127] TAvg[60] Fan1[2297] Fan2[2282] Fan3[0] Fan4[0] FanR[25%] Vo[333] PS[0 1212 1332 241 3210 1332] PLL0[7319 1881 1686 3034] PLL1[2277 2171 3553 5919] PLL2[5827 3661 2836 1596] GHSspd[81452.18] DHspd[3.505%] GHSmm[84614.64] GHSavg[80638.37] WU[1126505.06] Freq[506.55] Led[0] MGHS[26597.16 27990<rest of post truncated>

### Reply 3:
About the repair issues, just send email to <truncated> the order issues, pls visit shop.canaan.io.Tks.

### Reply 4:
Any update about your issue?According to your logs, it seems it's running normally but the only problem is that your TMax reach 127c which I think there is issue with your hashboardsHave you tried to run the PSU without the 3 hashboard connected?Try to disconnect the 3 hashboards and check if the PSU fan speed still running fast also try to disconnect the control board too to test. If nothing change I'm sure it's a defective PSU but if the PSU fan speed drop after disconnecting hashboards or control board then any of these have a hardware issue.

### Reply 5:
Any problems pls kindly send to <truncated>

### Reply 6:
May be this is high voltage issue, u can try another PSU or contact Avalon support for further assistance, they will surely help you if this is compatibility issue.

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10918,"Date: 2021-01
Topic: S19pro review.  open.
### Original post:
How ironic does it sound that the S17 pro on a custom firmware is more efficient than the S19 pro on stock? I wonder what does it take for bitmain to start thinking about adding more power modes for its new gears? I personally would love to use the stock firmware with a lot more settings available to me, but I am forced to use custom firmware because Bitmain is too lazy to do anything about their stock firmware, which not only lacks tunning and all the stuff you get on the custom firmware, it lacks basic functions like frequency, heck, even fan speed is disabled on the stock firmware.

### Reply 1:
spacerit is doing close to spec at the pool

### Reply 2:
I have an hourly watt meter.so 723.53 is the reading at 720pm ESTand 726.86 is the reading at 820pm EST. so 3.33 kwatts. for 111 on the gui and 121 at the pooland 729.98 is the reading at 920pm EST so 6.45 kwatts/2 = 3.225 kwatts for 110.6 on the gui and 112.1pooland 733.17 is the reading at 1020pm EST so 9.645/3 = 3.215 kwatts for 110.1 on the gui and 109.78pooland 739.64 is the reading at 1220am EST so 16.11/5 = 3.222 kwatts for 111.6 on the gui and 110.9pooland 773.53 is the reading at 10:20 am EST so 50/15 = 3.333 kwattsa 1 hour test is simply not very accurate.a 2 hour test is not long enough.a 3 hour test gets power use closer to accuratea 5 hour test show that same 3.2xx kwatt number.a 15 hour test shows that we rose to 3.333 kwatts. and the most likely reason is the room went from 85f to 96fI will do a few more power hash tests tonight.I will post back on power and hash for a day or 2.Gui has changed bigly.notice first pool is missing one 3 should be 3333 at the end and is 333 cue skips and labels it abnormalnotice second pool is rejected mmpool.org has this issue with a lot of mining gear and it is labeled abnormalthird pool is good.fan speeds are decent as room is not cra<rest of post truncated>

### Reply 3:
I believe this has to do with the fact the mmpool doesn't support AsicBoost and most gears nowadays come with Asicboost enabled by default.I wouldn't be surprised if they changed the way they hide those settings, I mean look at how much access we had to settings that Bitmain thought they kept hidden using some simple methods, anyway, I heard that Vnish are close to finishing their custom firmware for the S19 series, It would be very interesting to see what this beast is capable of with custom firmware.

### Reply 4:
It is pretty quiet for a 85f room.Would have been nice to get five of these a while ago.Looks like it uses 3225 watts for 110 ththat is 29.3 watts a thso far the one vnish test miner I had did 25 watts a th running an s17pro at lowest power setting.roughly 990 watts and 39.96 thpretty good. I have to think this gear could approach 22-25 watts if it clocks to 95thit is about 1 inch taller 1 inch wider 1 inch deeper.the psu fans are bigger which cuts down noise.

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16158,"Date: 2021-11
Topic: Water curtain and Fire suppression
### Original post:
Hi!Im working in one 600 s19 facility. I will work with 4 containers (150 pcs each) or 2 containers (300 pcs each)I have 2 important question about this.. The first one is about the water curtain. I see in a lot facilitys that they use it, but im afraid about humidity and water inside the equipment. Anyone can take of that fear out of me? hahaAnd the other is, exist some automatic fire suppression system? Thanks really much!

### Reply 1:
Not going to talk about water curtains for cooling.Cooling dense containers are complex problems with a lot of details.Fire suppression can be done with gas like co2 and fire blankets.This will offer protection to the equipment.Obvious that a power cutoff to each and every container must be in place.If a fire starts power is turned off to that container.Possible release of a safe fire suppression gas and fire blankets can cut the o2 off to the gear.So auto power shut down is a must.

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16485,"Date: 2023-04
Topic: Technical Questions
### Original post:
If you shutdown your mining rig that consists of 1000 s19 minershow long will it take since you decide to turn them on until the hash rate is stable on the pool and running?if you want to mine only 10 minutes every houropen the machines > mine 10 minutes > close all the machinesonce every 1 hourwhat will happen to the machines?how long will it take every time to launch and run stable?and any other probabilities you may think ofthe questions I ask may look strange, but you will understand laterhow much will it save in electricity if you shut them down completely and if you just stop mining for 50 minutes

### Reply 1:
First, the hashrate needs to become stable locally on the miner itself, most miners go through a warm-up/tune cycle before reaching full hashrate, depending on the miner's model and firmware, this could take anywhere between 1 to 60 minutes, it depends on a lot of factors.For the hashrate to become stable on the pool, it's a matter of luck and pool difficulty, and whether or not the miners run behind a proxy, but usually 5-10 mins, depends on the pool of course, some of them have 5m hashrate display, some have no less than 15 mins so you can only tell when 15 mins had passed, but rest assured, every share you submit counts even if the chart on the pool page doesn't catch up fast enough.This will probably reduce their lifespan.When you shut your gears down, you save 100% of the electricity they use, but then you gain nothing, in fact, you spend more energy by doing so, the warming up, fan check and the rest will consume power for no gain in pool shares, so there is no gain at all, what are you up to anyway?

### Reply 2:
As mikeywith said, the risk would be to make some serious damages to your hardware with this strategy.You could power on your ASICs during 3 days per month, you would have the same number of shares submitted, and less risk, less things to do yourself like that.Or you could just mine with 10% of your S19s h24. In general my ASICs need 5-10 minutes to mine at their full potential after I've power them on but it depends of the firmware. Sometimes, some pools need some more time to show the shares submitted and the real hashrate you are sending to them. Even if the shares are ok and still accounted, it shows some low values during the first hour.With stock Bitmain firmware it takes a longer time to run stable and at full hashrate, than with Braiinos for example. But Braiinos is stealing 2% (not sure about this number but it's the one I think I remember) of your shares as a dev fee...

### Reply 3:
Ya, it's different from one model to another, in fact, I have several miners that take longer than the others despite having bought them in a single batch, stock firmware is always slower than most custom firmware.It's 2% for Antminer S9 and 2.5% for everything that comes after that (S17 and S19 series), but I think the word ""stealing"" is wrong! They aren't stealing anything, it's the fees they take for their efforts, it could only be called ""stealing"" if they did not inform you about it beforehand, however, it's clearly stated in multiple places that they do indeed take x% as firmware fee.

### Reply 4:
what if stopped mining without shutting down?

### Reply 5:
I think you talking about sleep mode where you can switch the miner from low, normal mode to sleep mode. Even if the miner is set to sleep mode the miner will still consume power not 100% because the fan still running at low speed.What I guess you might have free power on daylight and you don't want to mine at night because you would end up paying electricity bill?

### Reply 6:
to be honest it is way deeper than that.. just some solo mining craziness.

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23605,"Date: 2021-06
Topic: apw3++ repair advice..
### Original post:
Hello!I have a non-voltage source.There is nothing visibly flawed inside.The capacitors in the primary part are charged at 310v, the relay does not engage.From the youtube clips in the enclosed area I should have ~ 13v. I have 0v.<link>

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23011,"Date: 2019-07
Topic: My first farm
### Original post:
I do not know how to calculate the ideal place to put them. I thought of using ducts to directly channel the top of the shelves.As for the electrical part I have a capacity of 40320kw maximum (for now), so I stipulated this goal of S9s.As soon as this first module stabilizes my brother-in-law (who has money), it will help me put together a new modolo with 11 S17 machines (but it's another story).

### Reply 1:
Good afternoon,I intend in the coming days to start building a small mining company and would like some tips:The space will be of 6.2mx2.9m with 3.4 of height (the height of the ceiling can be altered, is the only part that still has to be done). Made in cement blocks and slab cover using styrofoam, beams and cement (taking advantage of part of the existing structure).An entrance door of 70x2000 cm.Four shelves (I do not have exact measurements, but will be done by hand so I accept suggestions here as well).The ventilation system will be made by four exhaust fans of 1750 RPM (4200 M / Hr) each (The exhaust fans were 4: 2 less than 1 meter from the floor and the top 2 were 2.4 meters from the floor. between them)I put a small table for repairs, maintenance and <truncated> it will be only 12 S9s 16th, but in the next 3 months a total of 29 s9s 16th should operate in space.My doubts are:How do I accurately calculate the need for air circulation? How to avoid dust accumulation (I know there is no way to stop totally, but ways to decrease it will be welcome).I thought of using homemade refrigeration systems, but I do not have the technical knowledge to know if they are efficient or not.<rest of post truncated>

### Reply 2:
Iirc each S9 moves around 250 CFM with the fan at 100%, This member used 300 CFM to err on the side of caution. Either way you have enough exhaust fan to cover the 29 projected miners.4 exhaust fans @ 4200 m3/HR = 16800 m3/HR ~ 9889 CFM29 * 300 CFM = 8700 CFM. This was an overestimation again, and still came in under your fans ratings.What I am actually concerned about and don't see mentioned in your description is where is the intake? How do you plan to provide fresh ambient air to the miner inlet? You may need to look into building a hot aisle/ cold aisle situation, with louvers and/or fans for the intake air. This is common for many people. You can also see a description in this thread of someone who built something similar to yourself recently and what worked for them. I linked below a basic reference thread for getting started feel free to review it as well in case there are other considerations you haven't considered. Good Luck.First time/Small time miner reference

### Reply 3:
So start calculating the amount of air you need to be moving, if you want to use 250cfm per S9 as suggested that would be 7250cfm min, but you also mentioned S17s and i don't really know about those, maybe those need 500CFM each?So to move that air you need some powerful fans, and they can take part of your energy, so leave that margin. Of course you need enough holes or ventilation to be able to move that mass of air, in and out of the place.Whatever your electric capacity is, don't go above 80%.Oh and by the way, those 4 fans you mention, are equivalent to 9888 cfm, those should do in theory, not accounting for the S17s. You can use this online calculator. Actually wherever your air intake is, you CAN use filters, and replace/wash them periodically (buy twice as many). You can go from finding your favorite fabric to the actual filters used in large central air conditioners. The filters slowdown air intake so you might need even larger aperture. It is nice if you can get a measuring tool for cfm, to verify the fans are actually moving the correct amount.But of course, you can also find out the hard way, by looking at them overheat etc.If you don't filter the air you'll have to sch<rest of post truncated>

### Reply 4:
With nearly only 3 meters in width i don't suggest putting any tables or any other sort of tools , as far as the ceiling goes, try to make it as high as possible, even if it would create too much of unused space ( because obviously you want to try to stack the gears starting from the bottom ) the extra space would allow the heat in the room to rise until fully dealt with by the exhaust fans which are supposed to be placed on top.For the filters, take note of this Now it all depends on the environment, I have a small farm that collects all kind of dust, the filters will be blocked way to often, thus reducing the air-intake making the miners run hot, the easiest solution which was suggested to me by the lazy part of my brain was to simply get rid of the filters, and to my surprise the gears now run way cooler, and don't really get all dusty that quick, with all fans being set to 90% seems like the majority of the dust goes in and out real quick, I do however blow them using a blower once in a while but overall they are doing much better wit<rest of thread truncated>
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13688,"Date: 2021-05
Topic: Help with setting up cgminer
### Original post:
Folks - i have been trying to setup CGminer, but i keep getting the below error when i run make. Code: CC cgminer-logging.oCC cgminer-klist.oCC <truncated> cgminer/usr/bin/ld: cannot find -lzcollect2: error: ld returned 1 exit statusMakefile:844: recipe for target 'cgminer' failedmake[1]: *** [cgminer] Error 1make[1]: Leaving directory <truncated> recipe for target 'install-recursive' failedmake: *** [install-recursive] Error 1Can anyone help figure out which package may be missing for this error to pop up? The OS is ubuntu 18.04 LTS. The packages i am installing with the script are: Code:sudo apt-get --assume-yes install <truncated> build-essential autoconf automake libtool pkg-config <truncated> libudev-dev libusb-1.0-0-dev libncurses5-devAny help here would be appreciated. Thanks!

### Reply 1:
Try installing libzOn my ubuntu it was sudo apt install libz-dev

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11183,"Date: 2022-07
Topic: Are T17 and S17e hashboards the same?
### Original post:
Hey everyone, apologies if this has been answered elsewhere on the forum but I can't seem to find the answer anywhere.I have an S17e 64Th/s with only one hashboard working at 21Th/s and a T17 42Th/s with only one hashboard working at 14Th/s. My question is are the hashboards in these units the same and if so could I remove the working hashboard from the T17 and install it in the S17e.And if so, should the T17 board now hash at 21Th/s as well?Many thanks in advanceCJH

### Reply 1:
NoBut there are some people that can do repairs.Are you USA based? There is a guy in Maryland.

### Reply 2:
I'm in Ireland. Repair companies aren't easy found in this neck of the woods!Thanks for your reply.CJH

### Reply 3:
Go see www.zeusbtc.com for an european repair shop.Also, mikeywith has this good thread here: <link>

### Reply 4:
I'm not sure if I get what you mean. If you're trying to mix the 2 types of hash boards, I think something could go wrong. After all, the ASICs they use are not the same. If there is no suitable repair center in your country, then you can check these repair manuals for troubleshooting:How to Repair Antminer T17 Hash Board?How to Repair Antminer S17e Hash Board?

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23271,"Date: 2020-05
Topic: how control manually fan speed in avalon8 ?
### Original post:
i want to decrease fan speed . any suggestion?

### Reply 1:
Get an idea from this thread below only if you have root access- <link> read the whole thread using this link <link> use the search CTRL+F then type this term ""fan speed""I hope it helps.

### Reply 2:
As an example for setting minimum speed of 10% and max of 30%, under More Options use--avalon8-fan 10-30Full list of A8 <truncated> <truncated> <truncated> NULL, <truncated> ""Set Avalon8 default level of core voltage, range:[0, 15], step: 1""), <truncated> <truncated> NULL, <truncated> ""Set Avalon8 default offset of core voltage level, range:[-2, 1], step: 1""), <truncated> set_avalon8_freq, NULL, <truncated> ""Set Avalon8 default frequency, range:[25, 1200], step: 25, example: 800""), <truncated> set_int_0_to_7, opt_show_intval, <truncated> ""Set Avalon8 default frequency select, range:[0, 7], step: 1, example: 7""), <truncated> set_avalon8_fan, NULL, <truncated> ""Set Avalon8 target fan speed, range:[0, 100], step: 1, example: 0-100""), <truncated> set_int_0_to_100, opt_show_intval, <truncated> ""Set Avalon8 target temperature, range:[0, 100]""), <truncated> set_int_1_to_65535, opt_show_intval, <truncated> ""Set Avalon8 polling delay value (ms)""), <truncated> opt_set_intval, opt_show_intval, <truncated> ""Set AUC3 IIC bus speed""), <truncated> opt_set_intval, opt_show_intval, <truncated> ""Set AUC3 IIC xfer read delay, 4800 ~= 1ms""), <truncated> opt_set_intval, opt_show_intval, <truncated> ""Se<rest of post truncated>

### Reply 3:
Hi mate .thank u for your answer.I imported cods but can't decrease fan speed .can u explain how should I import this cods? maybe I have mistake

### Reply 4:
841 setup to be a quiet space heater:Power mode: Low powerMore Options: --api-listen --avalon8-fan 10-25That will take power down to around 850-900w with fans maxing at 25%. Runs around 8.8THsDo be aware that when slowing down the fans you also need to make sure the miner is in a lower power mode or else it will be rather unhappy and just run as fast as it can with the fans throttled down, as it overheats it will begin self protecting by slowing down the hash rate.

### Reply 5:
Hi mate .First thank u very much.It's working perfectly . My device is A-851S set fan speed on 50% , hash is 9 T/H , 600-650 W, Do u know can control Fan speed of Bitmain S11 ?

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23631,"Date: 2021-07
Topic: Effect of Brownouts on Mining Equipment?
### Original post:
It seems to be a little difficult to find information on how brownouts (voltage drops for sustained periods) have affected people who are running on unreliable power.We have Avalon 851s hooked up to AlphaMiner PSUs, but I cannot find information on what is the recommendation for handling brownouts.Does anyone have experience with this? Is it required, or do the miners / PSUs have an intelligent way to handle voltage drops without damaging circuitry.Thanks.

### Reply 1:
The miners could care less about a brownout, they will run as normal until the PSU cuts off and will restart the the PSU comes back online.The PSU's are a different story: Running at a very low line voltage (below their nominal rated minimum voltage, usually around 190VAC) puts a lot of stress on their input circuits and will no doubt shorten their life. When the line voltage drops below a certain minimum the PSU *should* shut off but that feature is up to whoever makes the PSU.

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23799,"Date: 2021-12
Topic: APW9 vs. APW9+
### Original post:
Would I be right in thinking that these power supplies are identical from an electronic point of view? I'm aware they have different mounts.The reason I ask, I have a load of new APW9+ but no spare APW9, however I have an APW9 which has died. So my question is, if I can make the connections ok, can I use APW9+ to replace an APW9?

### Reply 1:
There might be some differences between the models.Zeusbtc has a psu model correspondence table here:<link>

### Reply 2:
I believe they only differ in the busbar connection tho, I have looked into both PSUs and they seem identical, even the specs are exactly the same, DC output is 14.5V-21V, rated at 170A, I have not tested it but I believe if you can manage the connections (which is going to be a bit of work) they should work just fine.,

### Reply 3:
Busbar and other connectors 'appear' to be identical, just the mounting method that is obviously different

### Reply 4:
I repair them, so I saw ... electronically yes they are the same !!!there is only the assembly which difere ... the outputs are identical! (for busbars), but if you mount an APW9 + on a T17 or S17, this one will give you an error (POWER LOST) ...Where is the problem in the PIC of the PSU, which will have to be reprogrammed;), without reprogramming the PIC, you cannot mount an APW9 instead of an APW9 + (or vice versa)<link>

### Reply 5:
Ya poor choice of words on my side, one of them is a lot harder to take off than the other one.a spot on as always theirry, do you think it's possible to extract the hex from the PSU's PIC and then write it on the other PSU by using a Pickit of some kind?

### Reply 6:
WELL, interested for APW9 Hex PIC (flash this on APW9+ for convert it on APW9)? Sure, this is great.Thank yo very much. Best way to see details, regards.

### Reply 7:
could you upload again the hex file and guide me on the procedure to convert the APW9+ to APW9?is the PICKit3 apropriate for this?<link> you

### Reply 8:
did you managed to flash the firmware on APW9?can you send me the HEX file please? it seems that thierry4wd is unreachable

### Reply 9:
Yes of corse i extracted this if anyone is interested for APW9 Hex PIC (flash this on APW9+ for convert it on APW9)<link>

### Reply 10:
Hi , sorry , i uploaded again <link> you want quick reply, please do not hesitate to visit my website and join my discord , i reply at maximum of two hours

### Reply 11:
thank you!

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16388,"Date: 2022-12
Topic: Difference between cloud mining and hosted mining?
### Original post:
I have no idea what the difference between the two is because I am not involved in mining. I directly invest in coins, but I'm curious about the differences between the two in case I decide to start mining.

### Reply 1:
Cloudmining is either a scam or is making you take all the financial risk in exchange for a small piece of the profit, hosted mining is either a scam or hosting your actual mining rig.Basically, most of the cloudmining company's discussed on bitcointalk are either an obvious scam or later on turn out to be a scam. The ""honest"" ones run their own hardware in their own datacenter, and you pay all their costs in exchange for a part of their income.On the other hand, hosted mining company's usually let you run your own miner, you still pay all the costs, but because it's your hardware you also get all the income.Personally, i wouldn't invest in neither of these options... Maybe i'd dip my feet in hosted mining IF i could find a reliable company in my own country AND the math proves it would be profitable... but still... for me it would either be home mining or not mining at all (and at the electricity prices we've been paying for years, home mining is no longer a viable option for me)

### Reply 2:
In theory the difference should be that in case of cloud mining you buy (any) hash rate (which you may also able to resell to other users if you no longer want to mine), while for hosted mining you buy actual miners and that may not be so easy (availability, more expensive, ...). Especially in case of hosted mining you'll have to pay for all the expenses, from electricity to maintenance. And you also don't get your hands on the machines.In reality cloud mining means websites that have no miners, display some nice numbers and offers to attract unsuspecting newbies into investing and they don't pay (or even more, they ask for more money pretending you need to pay in order to get your money). Plain scams.In reality hosted mining is also dangerous since you cannot be 100% certain the host will keep his promise. I've seen stories with the host simply making some day all the miners mine to his own wallet and not answering to calls any longer. Of course, if you have a good contract and the identity of the host was real, you can start (a costly) lawsuit.As @mocacinno said: it's better to avoid both (unless you have very reliable information you can react legally if they attempt to scam you<rest of post truncated>

### Reply 3:
Such a nice way to summarize it, while probably ignoring the majority of the issues. OP, don't get trapped by marketing words like this. Not saying they are lying, but there are dozens of businesses that scam their users in the end while promising cost-efficient mining. Even if they are honest, the risk outweighs the benefit. FYI, your link doesn't work.

### Reply 4:
Why don't you just buy a miner and run it in your home it would be much safer because you have them physically.Both Cloud mining and hosting have risks cloud mining is most likely a scam while hosted mining is risky unless you know a legit company but right now it's hard to find a legit company that offers cheap Electricity.So to avoid the risk buy a miner and mine on your own without any 3rd parties but the problem is if you have cheap power because you won't make any profit if you mine with an expensive electricity rate it would be better to invest in bitcoin/altcoin than burning your investment in paying the Electricity bill.

### Reply 5:
As a safety tip and advice, you should also be careful so people don't take advantage of your curiosity, get into your PM, and offer to help you get started. Majority of them may have bad intentions for you. For any of the options, do your own proper research to know better and make a choice.

### Reply 6:
I don't have access to cheap electricity or the time to maintain a miner on my own, which is why I thought I would look into these options... :/My brother is into hosted mining and from what I have heard he has been making a decent amount of profit. We don't talk anymore so I have no idea where he gets it done from..

### Reply 7:
I think you should ask him even if it feels awkward since you're risking your money here. At least you have someone with experience to learn more directly. But always be cautious because the risk is always there. Sometimes a scam service gives you a ""decent"" profit for a few months, then asks for another deposit later, and then ditches you.

### Reply 8:
Well, you haven't even indicated which coins you are investing in, it's possible that they have nothing to do with mining, and if I were you, I wouldn't rush to invest in cloud mining, usually it's not who they pretend to be, so be careful with that. The difference between cloud mining and hosting is that in the first case you just buy virtual capacities, which may not be available from the seller, in the case of ho<rest of thread truncated>
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11270,"Date: 2023-03
Topic: Bitmain is getting called out for issues with a couple of their S19 models...
### Original post:
Came across this article today and I am honestly wondering if this is only isolated to the S19 XP 140TH units and their S19 90TH units...<link> know I have had a few S19APro 110TH units fail on me under warranty. They drop down to 2/3 hashboards just like appears to be happening with the units mentioned above. My units are still @ Bitmains authorized repair center and have been for 2 months now...

### Reply 1:
It's really that bad? The tweet that led me to this was far more alarming than the article looks at first impression.So, they thought that it wasn't enough they've made outrageous profits selling gear at 5x the prices for a year, so it's time to milk it more, how about we cut costs with this and that and save 10$? Or something like that?I don't know the implications of that aluminum board, they say that Whatsminer is already using the same design but the PIC thing seems tricky, again seems to encourage larger farms over small miners.

### Reply 2:
They depend more on the PSU. If you want to recognize them, the ""old"" miners (with PIC) came from factory with PSUs: APW12, APW12A, APW121215 a,b,c. The rest are all ""new"" miners (without PIC).The old miners can use ""new"" PSUs, but new miners MUST use ""new"" PSUs, they are incompatible with the old ones. Very old firmware will not work with new miners either.As for Bitmain saving on parts, yeah its not just the PIC, there are also less temperature sensors, some hashboards have only two instead of 4 or 6.However the ""old"" miners are becoming rare, everything they sell now has switched to this.You need to be careful those ribbon cables are well connected, specially the small one that goes to the PSU.This is nothing like the S17 fiasco, it simply puts more weight to the PSU itself. I don't think they are significantly worse than the old miners. Of course the early S19 Pro 110TH uses 7nm asics while the current ones are all 5nm, confusingly even the newer S19 with low THs.

### Reply 3:
I keep hearing that the ""A"" version of the 19 pro series is terrible, I have always questioned why people sell it at cheaper prices than the other ones, pretty lame to have a gear that expensive die on you in a few months, reminds me of the 17 series.It's not just the aluminum board, it's how everything works together, based on my own personal experience nothing beats Whatsminer in terms of durability, people who had enough experience with both brands will understand that it's the reason why Whatsminers sell for almost the same price as Antminer despite being slightly less efficient, it's the extra quality you pay for, of course, Whatsminer is far from perfect and there is some stupid stuff in the design which pisses people off and should have changed years ago, but just like Bitmain they don't seem to care.

### Reply 4:
So what Bitmain just got in a new <truncated> bright-eyed engineer with no hands-on Real World design experience and told them, ""we know the current design formats work quite well but want to do it differently. Make it so!""?Sooo many things wrong with what is described and shown in the pictures...I know! They used the idjit responsible for the terrible AMT/Bitmine.ch A1 CoinCraft miner hash boards as a consultant!

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23723,"Date: 2021-10
Topic:  Hash Board Repair free tool Antminer Test Fixture for S9 T9 T9+
### Original post:
hii have this testerYou can't copy the tester at allThe tester still does not work by adding tf card filesIf it weren't for that, everyone would make a tester for themselvesAnd no one buys the tester from Chinese <truncated> a device and relaxIt's worth it

### Reply 1:
Honestly what you asking for is a bit too much and I doubt that anyone here will be able to provide you with the information you need, if you plan on manufacturing such a tool then you need to hire a team of professionals for that, and obviously that comes at a huge cost and in the end, you are highly unlikely going to beat the Chinese in terms of the cost.So my word of advice to, buy the tool, I would also suggest buying the version that does the S17 and T17 models as well, the cheaper version only works for S9 and T9 and pretty soon those gears will be long gone, so pay a little extra and get the once that will be useful for months/years to come.If you want to try your luck go ahead and contact them here <link> , maybe you get lucky and they share some stuff with you.

### Reply 2:
The repair tool is literally an s9 control board with an SD card image running the diagnostic software hooked up to a screen. You can get a copy of the SD card on the internet somewhere

### Reply 3:
I think that is incorrect, they literally have a tool that accepts the firmware of all the following models <truncated> S15.T15.S17.T17) and I am not aware of any control board that is available to the masses which can do that. correct me if I am wrong.

### Reply 4:
HelloYou are completely righthiThis is not the case at allIf you buy the S9 or V9 board controlAnd copy the files into the SD cardThe final output is something different from the testerThey are similar in appearance but are practically differentI tested it doesn't workYou have to buy the tester yourself from a Chinese company if you want

### Reply 5:
And some ones knows where to find image of tf card for s9 test fixture? i need to rapair some and need that files, thanks

### Reply 6:
Bitmain doesn't share it for free if you want to have a test fixture you can buy it from them including the TF card with the test fixture firmware. However, there is a free one the link is already posted above if you explore it. If you can't find it then this is the right link below- <link>

### Reply 7:
Try to contact the seller you bought it from, if I remember correctly, I saw one guy on Aliepxress mention sharing the SD files via email for those that buy the tool, many folks have the files, I am surprised why isn't public and easily accessible yet.

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16449,"Date: 2023-03
Topic: Can new miners still make good profit?
### Original post:
Bitcoin did not just start yesterday; miners did not just start yesterday too. I would like to know if you still believe that people who choose to start mining today will still be able to make good profit, like is it too late to start mining bitcoins?What can they do to ensure that they make profit?

### Reply 1:
Now it's not like the early days when people could mine bitcoin with a regular computer, but miners are still making profit with their mining hardware and joining mining pools.Take note that bitcoin total hashrate has increased by around 85% in the past year.

### Reply 2:
Of course they can: Provided they have VERY cheap electrical power. For the most part that rules out any home miners because residential service rates are typically 2-3x higher than commercial & industrial rates are. Even the <truncated> rates vary widely among the various states and countries.

### Reply 3:
The only way to get profits in mining is if you have a low or almost free electricity rate. That's the only way but since the Bitcoin price of Bitcoin is too volatile and the block halving is coming there is a big chance that the bitcoin price rises it can give more profit to those who mine at low-cost power. Another thing to ensure profit is to keep holding your mined coins and sell them at the right time.

### Reply 4:
If the electricity you pay is expensive in the locality where you live, I can say that it is not advisable for a novice miner to do that. Because you will end up wasting time, fatigue and money. But if you know that your electricity consumption is really cheap there, maybe somehow you can make money, but of course that depends on the price of bitcoin in the market as far as I know.

### Reply 5:
Build a nuclear fusion plant, sell that electricity to the grid, profit!There is no way to ensure! profit, you either have the conditions in which most likely you will make a profit, which means nearly free energy, zero or low tax and vat on imports, hefty state deductions, you own the space you're going to mine in, or, you start without one or two of those and you go up the ladder of risking to not make a profit at all.Mining is one of those businesses where no matter your skills or your knowledge if the cheap resources are not there in your country there is nothing you can do.Most of it is on credit.Compute North went bankrupt, Greenridge sold off $74 mils of equipment, Core Scientific needed life support cash injection to stay afloat, Iris Energy went into debt 100 million to avoid bankruptcy, the spike from 16k to 24k saved half of those companies that have not learned a thing and keep expanding on credit and debt. Popcorn grabbing time!

### Reply 6:
I have inexpensive electricity 5 cents, but I have no great desire to buy ASICs. Mining in private homes will be prohibited. Mining is still banned in private homes, but there is no control if you do not consume a lot of electricity. The equipment is expensive and if a private house is checked, ASICs will be confiscated, and these are big risks.

### Reply 7:
At least for Core Scientific, i wonder if it's partially caused by Celcius bankruptcy.There's nothing much you could do if mining is banned on residential area and authority can enter your house without warrant. Although using GPU or few USB ASIC is valid alternative.

### Reply 8:
The only gear that still makes sense draws 3000W, that's 72Kwh a day and 2160 kwh a month!Since the average American house who are the leader in consumption burns only 800kwh, I seriously doubt you can mine and not get a control, you simply can't mine without consuming a ton of energy! I only have like 250-300 kwh a month, no way I could disguise a miner.But, what country is that, cheap energy and a ban on private mining? Doesn't ring a bell!At 5c/kwh you make 10 cents a day with a $1500 card, better play the lottery with a sha256 stick.

### Reply 9:
I know which one it is. People still mine but at risk of being <truncated> everything confiscated and the State mining with that using the military (underpaid exploited labor). Unless its some big whale with deep connections willing to share profits with them...

### Reply 10:
But what if the money you are going to spend on the purchase of equipment, just buy bitcoin for a long-term investment? You will still need to pay your electricity bills.

### Reply 11:
We can't say as optimally as possible, but it's just that maybe we can predict this can still provide them with profits and it also needs to be seen from the target achievement of a miner, apart from that this also depends on initial and ongoing expenses, sustainable in a good sense in terms of adding equipment, and also from the cost of electricity in a place, if in their place the cost of electricity is classified as low, this should benefit them.Little we say now the right tool to run mining of course we can use ASIC, actually Rig Mining is also good t<rest of thread truncated>
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    ""hardware_name"": ""USB ASIC"",
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    ""hardware_name"": ""$1500 card"",
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13649,"Date: 2020-04
Topic: Firmware for S17+ 95th/s and T17+ - 80th/s T17 44t@45w/t • S17/T17/S17 Pro
### Original post:
Hi Taserz,I have updated a few of my miners from 1.0.0 to 1.1.0:1) It seems the profiles I had set in 1.0.0 are not 100% stable with the new version. After the update multiple chains need to be re-adjusted or a complete Auto-Tune process was necessary.2) Auto-Tuning is much faster based on my feeling.A negative thing I have recognized was happening on one miner. The S17 was set to a 62TH profile under 1.0.0 with a voltage of 18.5mV.It was running very stable all the time and the rate of Errors was very low.After the update to 1.1.0 the profile was not working as I described in 1) and I tried Auto-Tune.It was vissible, the chips 45-48 on chain #3 where very hard to tune and the tuning process failed for over 25 rounds and still it was red and orange rating all the time.(Although the tuning process set the voltage to 18.9mV already)I have tried to reduce the frequency down to 100 but no success - I failed to get the chain on a proper level.Today after two days I decided to give it a try and flashed the FW back to 1.0.0 and the miner is back to green level 100% and is working very stable again...Any idea what could be the reason?

### Reply 1:
1) Yeah slight changes let it retune if it is not stableTry to retune and let her run. It should tune the same. That is odd. If you can't get it stable at old settings try to flash back to 1.0 see if it tunes.The autotune goes for stability so even if it can do it at lower power it bumps it up I think .2 to keep stableSorry just read last sentence... That is odd. Let me confirm if we changed voltage step up after tune. After it tunes it bumps power slightly for stability

### Reply 2:
Yep, it is really odd as exactly these chips are working perfectly on 650M Frequency and 18.7mV now on FW 1.0.0The tuning process detected 18.7mV as minimum voltage on the new firmware and inreased to 18.9mV and 520M until it confirms the chains are stable.But the machine was working on very low performance for these chips and still marked in red color.So I have tried to reduce the frequency more and more but nothing was working. (Also 100M/18.9mV was still red)No problem, if the miner is working stable with 1.0.0 it is no issue for me to stay on that FW.Anyway I thought it is important to report as maybe there is a issue with the new release?

### Reply 3:
Can you humor me.Tune on 1.0Then flash to 1.1 I think it keeps the learned tune. That way you can benefit from the return at lower preset on over heat and some of the other changes if you want them.

### Reply 4:
I did just that. It saves the old tunes. The new version adds an autotune at 65 TH/s, which I did, but it locked in at a higher voltage than 67TH/s. Also the new firmware for some reason pulls an extra 30 watts from the wall on the same settings. Very strange. I rolled back to 1.0 again.

### Reply 5:
Do you have a step by step guide for a first-timer who is loading different firmware on miner? (i might have missed it on the website)is the s17+ 105TH speed for immersion, or normal air cooling operating medium? I need to make sure I am making a profit, after the increase in speed and dev fee calculation, hence asking.Also, what is the wattage increase at the OC speed? will the PSU need extra cooling, will it be ok in the long term?what about the dev fee, as halving is soon. will it be <truncated> I think I found it. is it this one <link> also, will it work/has been tested on s17+?Edit2. 'S17+, T17+, S17, and T17 SD Card Image to Downgrade'/Unlock SD images.zip will not finish downloading, keep having my connection reset. do you have another link for it, please?

### Reply 6:
<link>

### Reply 7:
The new link worked. thank you.About my other 4 questions in bold above, do you have an answer, please?

### Reply 8:
Q1-Immersion or really really really cold environment with ton of airflow.Q2-Depends on settings you use, your ambient temp and luck of a draw (silicon lottery).Q3-Not unless you are in very hot environment or you plan on going above specs of PSU.Q4-I am not part of taserz team nor do I have anything to do with devs (I am just another customer who pays fee same as you) but I assume they wouldn't lower the fee.

### Reply 9:
Hello,There have been many issues reported with T17 series that are tied to temperature sensors checks. <link> all 4 sensors on 1 chain stop giving info and miner shuts down the chain. After several restarts it starts hashing normally until issue re-occurs after some time. Is there a way we can disable / skip temp check on 1 chain with this firmware? Yes i am aware of all risks.

### Reply 10:
Some risks are not worth taking. I would personally either RMA the unit or buy new temp sensors.

### Reply 11:
Thank you for your suggestion. Do you know where can new temp sensors be bought?

### Reply 12:
There probably is a way if developers decide to add it, but I highly doubt it because of the s<rest of thread truncated>
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23373,"Date: 2020-12
Topic: Braiins os+ issue
### Original post:
Hi Guys. I need help here. Was installing Braiins os+ on my S9s and got this error on 8 of them:Not FoundThe requested URL <truncated> was not found on this server.The S9 is dead and dosent let me do nothing. Any help would be really appreciated.

### Reply 1:
I have the same experienced before what I did to fix the issue is by pressing the reset button. If you have a paper clip try to press it for 5 seconds and then release. If it doesn't work try to use the IP report button hold it for 15 seconds then release and check again. I hope this time it will work.

### Reply 2:
Well assuming you correctly installed/flashed the firmware then I don't see why would your miner be dead, maybe you are looking into the wrong URL? this happens when you switch between Bitmain stock and vnish, and here is an example.The miner's status page on stock firmware is:Code:<IP <truncated> Vnish it's very differentCode:<IP <truncated> maybe on Braiins OS+ the <truncated> doesn't direct you anywhere, just use a different browser and enter only the IP address of the miner 192.168.xx.xx.if that doesn't work, flash the miner with bitmain stock firmware using a Sdcard.

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    ""hardware_name"": ""IP report button"",
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    ""hardware_name"": ""Sdcard"",
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13808,"Date: 2022-12
Topic:  [Help needed] Sha256 opencl kernel needed
### Original post:
What actually trying to achieve?It seems that you are planning to mine using GPU?Take note that GPU is no longer support mining BTC.Check this link- <link> got the source from this

### Reply 1:
thanks for your replyi am actually trying opencl CPU versioni did checked this one but i don't seem to run it properly specially as i do not know the arguments it requiredex. dataInfo arg should contain a numKey byte is that the number of charcters the keys have or what ?keys ! are they as byte array or characters arrayi have passed the hash and result buffers to it along with zero keys buffer but the result was not correctso i am searching for one that just pass the string or byte array to it and receive the hash valuesorry if am too newbie for you but i am trying my best .here is my code for it after removing the keys args from the kernel Code: var headerByte = <truncated> <truncated> var dataInfo = new byte[2]; dataInfo[0] = <truncated> dataInfo[1] = dataInfo[0]; var hashRest = new byte[32]; // buffers to store kernel output var clBuffer0 = new <truncated> <truncated> dataInfo.Length); var clBuffer1 = new <truncated> <truncated> headerByte.Length); var clBuffer2 = new <truncated> <truncated> hashRest.Length); <truncated> clBuffer0, true, null); <truncated> clBuffer1, true, null); <truncated> clBuffer2, true, null); var prog = new <truncated> kernelcode); try { prog.Build(new[] {<rest of post truncated>

### Reply 2:
Um, as BitMaxz already said - it is beyond useless to use a CPU or GPU to process Bitcoin hashes. Given the current difficulty and even going back to around late 2013t the time taken to process even a single hash cycle is many magnitudes too long.Now sha256 altcoins - that is a different matter as there are several that have a low enough difficulty that they can still be mined with CPU/GPU's. If you intend pursuing this please move the discussion to the altcoin areas as it has nothing to do with Bitcoin...

### Reply 3:
Thanks for your replyi know it's ultimately no chance here , but consider me as a student or even a dreamer the point is i would like to try , so i am trying

### Reply 4:
Actually, if you want to mine Bitcoin you don't need to study them and install any sha256 files because all ASIC machines right now are plug and play you just need to set up your miner's pool and it is ready to mine. Better start reading this First time/Small miner reference for getting started.Or if this is all about study purposes then I think USB miner Newpac or Compac F is your best option which is way cheaper than buying an Antminer s9 and above units.

### Reply 5:
thanks again for your response and sorry if i am consistent on something that seems stupid or worthlessi took another look at the link you gave and managed to get it to work with simble strings now the problem is it can't give the correct hash when passing the headerCode: <truncated> // this works fine var head = <truncated> // returning header as byte array with 80 bytes length string res = getHash(head); // this gives a wrong hash[Edit]now it seems it can't handle long arrays i tried 80 length string and returned a wrong hash , dont know what is wrong in the code , i will try to study it again

### Reply 6:
What folks here are trying to get across is that other than as a purely academic exercise, hashing sha256 just using CPU(s) has no possible use. Even the most primitive ASIC sha256 chips from say late 2013 delivered speeds in excess of 1GHs when pushed hard and over 500MHs when throttled back. Even a very high-end PC with 24 or more cores cannot match those early generation mining chips. What you are looking to do is like learning assembler (lowest level CPU microcode) vs learning a interpreted programming language. Ja, it is always nice to know it or at least have a decent understanding of it but overall aside from some very specialized purposes not helpful to know.Point is that any real world application of sha256 blockchain technology is going to use ASIC's - not any mid to high level interpreted CPU code like C, .NET, Py, etc running on CPU's. Even the most modest applications would at least use FPGA's or even GPU's vs CPU's. The fact that Intel jumped into the fray with their open-to-all-comers mining ASIC proves that.Now, if you want to explore how to talk to an ASIC mining chip might I suggest you checkout Kano's cgminer git and pickup a low cost USB stick like any of Sideha<rest of post truncated>

### Reply 7:
WAW , that was great post, thanks a lot .yet as this is a totally new area for me i was trying to move forward from things i am familiar with to the next unknown cryptographic is one of the things i ddnt work on be4 so i was trying to take a little deep dive using the languages i am used to and when i got an acceptable picture of what is going on there i move on and take another step.

### Reply 8:
Thank you for the instructions; actually, I had the<rest of thread truncated>
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    ""hardware_name"": ""USB miner Newpac"",
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23215,"Date: 2020-02
Topic: Antminer PDU
### Original post:
<link> found this PDU and want to ask if this is good to use with antminer s9k and t17e antminer. thank u very much.

### Reply 1:
it may be able to run 1 17e using 2 c13-c14 cables along with 1 s9k with 1 c13-14 cablemake sure the cables are 14 awg and or 1.5mmI am not sure it will work only maybe as I do not know if the sockets are wired to do 10 amps each total of 30 amps.So I can only say maybe.

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    ""hardware_name"": ""antminer s9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17e antminer"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""c13-c14 cables"",
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16395,"Date: 2023-01
Topic: Can anyone guess what could he Bitcoin Difficulty After 100 years Till now?
### Original post:
Hi guys I was wondering wether that how much price would be after 100 years and also what could be mining difficulty of a Bitcoin. Still I was seeing that Bitcoin mining difficulty is all time high of previous records that sits at 35.36 Trillion Hashes and that is too much insane.

### Reply 1:
If Bitcoin mining difficulty is proportional to hashing power ..it will likely become very low considering that competition to mine for block rewards will no longer be necessary when 21million bitcoins have been mined

### Reply 2:
Nobody can predict that far to the future. Too many variables to consider starting from mining equipment, electricity/energy cost, Bitcoin price, etc. For example, if we found a new way to generate electricity at a low cost, and there is a new device/quantum device that can do calculations at exponential speed to an existing rig, that number you consider insane might be nothing for them. So, people will just keep mining without any care.Or, the opposite happens. Electricity becomes more expensive, no more cheap rig is found, BTC tank heavy, nobody no longer uses it and so the difficulty is so low that you can mine with CPU again. I think this is unlikely but I won't be surprised if difficulty falls in the future if the profit becomes too small for small-medium mining farms. At the end of the day, the market will correct itself. If mining becomes too difficult difficulty will get lower, when profit increases more people will mine again, and so on. If you plan to mine BTC right now, consider buying them instead if you can't play the long game or has cheap electricity. It is probably not worth the trouble to set up a rig if profit is your goal. CMIIW.

### Reply 3:
The fact that you are old enough to sign up for the form and ask such a question suggests that you need to be a supercentenarian to witness it, out of the nearly 8B population we have right now, studies show that there is between 300 and 350 supercentenarian, in other terms, 1 in 1000 centenarians (people who live up to 100 years) will get to 110, and to be centenarians the chances are 1 in 1000, so it's extremely unlikely for any of us to be there in a 100 years from now.Now that we got the human race life span stuff out of the way, the answer to your question is ""nobody knows"", everything will be determined by the VALUE extracted by miners, even the comment above that says could be wrong, when all the 21M BTC are mined, BTC could very well be trading at say 100M dollars each, if we were to assume that transaction fees are 5% of the total block reward, today it's 0.3125 which is about $5000 + $100,000 for the block reward = $105,000. in 2123 the total fees could be 0.1 BTC per block so at 100M that's 10,000,000$ per block, which even after accounting for inflation still beats the now ""105,000"", even with BTC trading at 10M still beats it.We also don't know how adopted BTC will be,<rest of post truncated>

### Reply 4:
Everyone who buys bitcoin to invest for future use is hoping to see a gain if not we can't predict how the market might be or become in the next years after because bitcoin price can pump and dump at any time if you are planning to mine BTC I consider you to buy so that you can have more. Nobody can predict what bitcoin could be after 100 years because we all know how the economy might turn to sometimes it maybe the bitcoin price may pump up in the next 100 years or dump.

### Reply 5:
Given Bitcoin's continuity for a hundred years, guessing is that it will be a global currency for daily use is logical, which means that there will be a lot of side networks, the lightning network and a lot that will work side by side with the basic network, which means that the bitcoin mining model for profit will not be the only motivation Also to secure this money and ensure that there is no fraud.If Bitcoin is turned as a value of value, mining will continue to ensure that no one will control 51%.So, as long as there is a demand and growth, mining will continue, which means that the hashrate will be the least strike from now, but it will be high enough to ensure the impossibility of a small individual or society on the network.

### Reply 6:
Anyone can guess.What it will be, on the other hand, no one will know until then unless BTC dies, then it wont matter.

### Reply 7:
It is uncertain to say how Bitcoin will be in the coming days, moreover, it is not at all possible to say how the position of Bitcoin will be in the world after 100 years.In the future we will get next halving2024 halving, block rewards 3.125 BTC100 years later we will get(Not me because I can't alive till 2123 )2124 halving, block rewards 0.00000009 BTCSo it can be easily estimated that after 100 years from today if Bitcoin survives then the circulation supply and total supply will be equal. It is difficult to say whether there will be mining at all<rest of thread truncated>
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11125,"Date: 2022-03
Topic: Grace Zhou - Trusted vendor?
### Original post:
Hello,I would need the opinion of experienced people on the forum.In the past, forum members have advised me to sell Grace Zhou.I am following his sales proposals on Telegram <link> he have any new feedback?Still a reliable <truncated>

### Reply 1:
Make sue you are dealing with the ""real"" Grace and not a scammer... She has several imposters but I have dealt with the real one several times

### Reply 2:
I finished a deal with grave like a week ago, she is still trustworthy and honest.The correct telegram id is @gracezhou1993

### Reply 3:
Perfect thanks for your feedback.On this same page there is @gracezhou1993 but also @bellachan1996 do you know if it is also a trusted person?At first sight I would say yes since it is on the Telegram page and I imagine that it is validated by @gracezhou1993 to sell.Maybe I should ask @gracezhou1993?

### Reply 4:
Grace and Bella both work for Miner Expert,Bella's correct Telegram id is @bellachan1996They also have a thread here at Bitcointalk<link>

### Reply 5:
Thank you for all this information.I will do a little feedback after purchase.

### Reply 6:
I'm coming back to you just to give you a little feedback.I ordered cables to replace on some of my power <truncated> made with Bella Chan from Miner Expert via Telegram.Very satisfied with the transaction.Payment in BTC, PDF invoice, fast shipping and reception in France in 2 days after shipping.Nice quality of the product.

### Reply 7:
Just received my S19j Pro today Worked directly with Grace and @gracezhou1993 is her legit <truncated> is there sales channel. They have at least one other reviewed contact some other forum members have worked with.I actually paid for a future date December batch S19 90Ths unit (paid very end of Sept), and delivery was apparently delayed by Bitmain.Also, Bitmain apparently shipped wrong units to minerexperts, (S19j Pro - various speeds) and up-charged based on speed and Pro version vs non pro to be delivered.So I ended up having to pay additional $1600 to get unit. Is what it is I guessIn the end, I did get the unit and Grace is legit.

### Reply 8:
Another little feedback with Grace Zhou.I already bought two new S19 Pro 110T.No problem, very good <truncated> username @gracezhou1993

### Reply 9:
Just now finding her telegram, couldve used this sooner. Feels sketchy but if people here have really used them, then what can i say.Prices also seem real good??

### Reply 10:
Personally I am very satisfied with her services and I find the prices very correct.She has a great choice of miners.I already have several transactions with Grace Zhou @gracezhou1993 and Bella Chan @bellachan1996

### Reply 11:
yeah they have a thread here.<link> careful that you talk to the real people and not imposters.both grace and Bella are good same company.mikeywith <link> very reliable and has done business with them you can point the thread here to him and ask for help.

### Reply 12:
In this industry you should assume by default that all resellers are scammers, it is the right thing to do.With that said, Grace and her employee bella are among the minority of legit sellers.As for the prices, you can find cheaper offers if you buy directly from farm owners or some other resellers, but you will need to depend on your luck that the gears you order actually work, grace charges a bit more but she tests everything before shipping, so it is up to you if you want to risk a whole miner just to save some money.

### Reply 13:
any hosts near me and I would think most aren't willing to let go of any equipment right now. but maybe something i'll try. is the import tax situation the same as normal for china? Thats whats keeping me checking us farm sites.

### Reply 14:
I believe they are still the same, however, some of Bitmain's mining gears are made in Malaysia and Indonesia, usually, you need to order a large batch to get those items that allow you to ignore the china tariff in the U.S, but you can always ask the resellers if they have those gears, I think the way miners in the USA would be priced is simply the price in China+shipping+ tariff+ some profit, so I am not sure if buying gears locally will be any cheaper.However, if the price is the same locally, or even slightly higher, it's always best to buy the gear locally IMO, check the marketplace, both Kaboomracks and Scott are good sellers located in the U.S.

### Reply 15:
Going back and forth with Grace and shes saying that machines shipped from Hong Kong to the United States will be duty free? So i can pick up 8k miners with no 30% import tax?? It's still China so I'm hesitant.

### Reply 16:
In principle, when it is specified in the advertisement, there is nothing more to pay. Everything is included in the purchase price.

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16389,"Date: 2022-12
Topic: Bitcoin ASIC price index
### Original post:
I want to find signals when miners capitulate.On TheBlock, I found this chart for Bitcoin ASIC price index.<link> am not a Bitcoin miner and I don't understand this chart. Could you help me to read the chart, please.And does it have any correlation to miner <truncated> I see all three lines are falling down.

### Reply 1:
The three lined represent three different efficiencies of miners.More efficient miners are more expensive because they use less power (so are cheaper to run). You'd generally not replace old hardware if it's profitible until you have to or use the components of old hardware to replace the components of new hardware (in cases where there's compatibilities and it doesn't involve the actual mining chips - such as the fan or the case).It's hard to compare them with the other charts as they only have 2 years of data for the other charts. From my experience, miners go up in price around the halving (when price goes up and there's a reason for it, and they'll normally keep going up until they can't anymore - such as miners not expecting to be paid back and impulse buyers disappearing). I've seen mining firms release a new miner, put a big price on it and drop the price if they don't all sell within the time they expected.

### Reply 2:
According to my research, this was I discovered try to find out by yourself. The blue line is Under 38 joules/TH (38 J/TH)The red line is 38-to-68 J/THAnd the Green Line is Over 68 J/THHope this will answer your question anyway, Good day Referrence: <link>

### Reply 3:
Bitcoin ASIC price index: It usually indicates the TH index of ASIC mining rigs mining BTC.68j/THType of rigs: old generationASIC mining rigs examples: S9, T9, S11, T15, M10 & others old generation mining rigs38-68 J/TH:Type of rigs: Middle GenerationASIC mining rigs examples: S17, T17, MicroBT,s, M20, M21, M32 etcUnder 38 J/THType of rigs: very latest generationASIC mining rigs examples: S19, S19j, S19 Pro, MicroBTC, M30s, M30s+, M30s++ & up to date model.Screenshot from: theblock

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  {
    ""hardware_name"": ""T15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M10"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT,s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M20"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M21"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M32"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19j"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M30s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M30s+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M30s++"",
    ""hardware_is_owned"": false
  }
]"
22886,"Date: 2019-03
Topic: S9 issue, it will not hash
### Original post:
most likely two issues.controller is dead or dying or has a corrupted flashed firmware.one hash board is dead. the one with out the <truncated> involves having a good s9 that works fine.if you have multiple s9's that work let us know.if you have just the 1 s9 it kind of is not worth fixing.you could just buy one on eBay <link> here<link> sure to ask about escrow.

","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": false
  }
]"
13659,"Date: 2020-08
Topic: Restore Bitmain Orginal Firmware Using Sd-card
### Original post:
Hi all,I bought a used S9 from ebay and to my suprise I noticed that there was not the expected bitmain firmware on it, instead it was equiped with this ""Hiveon Asic"" firmware. This firmware might be good, but I don't trust that ""Dev Fee"" and maybe ""welcome to my botnet"" thing in my network. So I searched and read a view things, I also asked Phil for some advise to get rid of this firmware.I thought that might be usefull for others if they run into the same problem, so I wrote this:Restore S9 control board back to original bitmain firmwareTo do this please read this completly BEFORE you take any actions. If something is unclear, please ask first, english is not my native language and I write it as I would do in german.[german version is here: <link> need:1. philips screw driver2. sd-card with max. 4GB3. Files from Bitmain (see links)4. Access to your router to see the ip given to the miner when using dhcpFirst of all we download the needed Files:Bitmain Firmware for the control board (t9+ is used on our S9 as well)* It is used to recover the control board firmware of T9+ <link> can find it on the bitmain web page under <truncated> Sd Card with image and then select the model of you<rest of post truncated>

### Reply 1:
The seller must be new to this, usually, when you want to sell a mining gear the first thing to do is to reset the network settings to DHCP, anyway after finding the IP address to the miner, did you attempt to change the firmware from the GUI by going to ""upgrade"" tab? this should work unless:1- The is a signature-lock like most recent Bitmain firmware.2- The miner is infected.I hope I get an answer to this question because I will very likely tag HiveOs if it turns out that they lock the firmware upgrade from the GUI on purpose.

### Reply 2:
The thing is you should avoid SDXC and SDHC. SDHC might or might not work, they don't say it this clearly, but that is the sole reason. Not all controllers are SDHC capable, and of course there are no SD beyond 4gb (2gb is the usual max).This is probably a Xilinx or Bitmain thing, not really caring about what port/chip gets in there. Whatever cheaper choice you could put there was probably the answer, and what better way to get rid of your remaining surplus stock?If you want to play it safe. stick to non sdxc and non sxhc cards; ie. Nothing above 2gb.And, they didn't expect people using the sd card that often... But then again, they didn't expect their firmware to be entirely replaced.PS: To avoid trademark issues with SanDisk, China calls microSD ""TF"".

### Reply 3:
To keep and have multiple cards is best since some controllers are like f you

### Reply 4:
It is most likely the average upgrade we have on all firmware including the stock firmware which allows you to flash any other firmware, and since SSH was not locked it simply means they don't lock your miners, so as for now - no negative feedback is required.That is a good point, I ,however, had some SD cards that failed to flash some miners while a flash went through with SDHC, I don't recall trying or even owning any SDXC but I would guess it might not work, so all in all it all boils down to this.

### Reply 5:
No, I was unsure if this was just for upgrading to a new Hieveon Firmware, or for all types of Firmware. The Gear was not locked as SSH was possible.The seller was a company for trading and not the former owner of the miner, this must be a mine in russia or ukraine according to the postagelables on the original packing. The miner was in perfect condition and got a mark on it wich identify it as no# xx, the psu was labeled the same, but with a different no. I think a mine sold his old gears to an trading service and do not care about reseting anything. The pool settings where also in it and because I wiresharked the trafic I could see that one goes to btc-pool, a second connection was going to another port of btc.com and a third one was going to an IP located in Frankfurt germany, that boost my will to reflash the whole thing to not leave anything suspicious on the controler.

### Reply 6:
Some troubleshooting notes:In a dusty environment the SD card clot can get a bit clogged and not work, a blast of compressed air is usually all you need to get it working.As you noticed not all SD cards work. It's not always the size but a lot of times the brand or just the card itself. I have found that for some reason some miners just don't like some SD cards. Even within the same batch, you occasionally need a different card even though that card worked fine on the miner next to it.I'm sure Phil can probably add more to the list.-Dave

### Reply 7:
I like Samsung cards the 16gb are hard to findhere is a 32gb kit<link> me you want more then 1 cardyou want an air blowerthe best air compressor I have ever used it this one.<link> get a good hose for it.also look at this video<link> 1:40 to 2:00it has a Samsung sd cardI mi<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD-card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""philips screw driver"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SDHC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SDXC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Samsung cards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""air blower"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""air compressor"",
    ""hardware_is_owned"": false
  }
]"
13813,"Date: 2023-02
Topic: Asic.to Custom Firmware - Optimize Performance & Efficiency S19j Pro 200th/s
### Original post:
Asic.to RocketShip Firmware is back with S19 series completed How To: <link> to part 2: <link> support all control board types except amlogic boards. Amlogic boards will be supported in the future when we feel it is appropriate to release to the public. We notice our bootloader was stolen and our exploits for the s19 so we are not releasing the amlogic firmware until the time is right. Sorry but some people like to ruin it for the others Website: <link> support: <link> Asic.to Currently supports:**Bitmain Antminer S9, S9j, S9i. T9+, L3+ Also allows using 6 hashboards for S9.Innosilicon T2tBitmain Antminer S17, S17 Pro, S17+, T17, T17+.Bitmain Antminer S19, S19 Pro, T19, S19j Pro, S19j, S19+, S19a, S19a ProControl boards C71, C55, C52, C49, IO + BeagleBoneAmlogic boards will be supported in the future when we feel it is appropriate to release to the public. We notice our bootloader was stolen and our exploits for the s19 so we are not releasing the amlogic firmware until the time is right. Sorry but some people like to ruin it for the others Sad** Development pipeline: **MicroBT Whatsminer M20S, M21S, M30s, M31sBitmain XXX and XXX (it's a secret)** Get notifications from: **Asic.to <rest of post truncated>

### Reply 1:
I forgot to update this thread but... AMLOGIC was cracked last year and we have solution for some of you

### Reply 2:
All PSU's now compatible even those that were not sold to the public

### Reply 3:
Good news S19 XP in progress

### Reply 4:
Do we have any present numbers of what it's looking like for this miner on air? Under or overclocked?

### Reply 5:
190-200t with stock psu we think. It's hard to tell as it's not stable yet

### Reply 6:
Hi! Can anyone advise please? I'm about to order my first mining machine here Mining Machine (Mining Rig) 8 GPUs NVIDIA GeForce RTX 3090 24GB GDDR6X Graphics Cards & All Components, 960MH/s'. I'm totally new to this and not sure if this is the right choice or I can find the cheaper model for the same result? I've ordered graphic cards from them in the past, the quality is not in question, only the model and specs. Thanks in advance!

### Reply 7:
GPU mining is death for some months now, you will never ROI.

### Reply 8:
Is there still a version that works with the S9, because on the website I only see newer models?

### Reply 9:
Free firmware for S9 is available now on the web for this old machine

### Reply 10:
Since our competitor like to spread misinformation I would like to state: Also a profile is not a short cut. It's a range of voltage/frequencies to speed up tuning so it doesn't take 3-5 days but yet get the same or better results.

### Reply 11:
The vinish group gives better results.. I am a miner.. I am not a worker.. from the competition.. We can obtain the same or better results.. in a short time.. I have obtained 25.7 W/T with immersion with an old model 96th... and stable... and I have also obtained 159th with 35 W/T with immersion...I wait for other miners to do the tests.. and it's good news that they are working on the new miners.. Bitmain just announced new firmware for the jpro 100th 25.5 over the air.. I look forward to their firmware to test.. and beat to the controller amlogic!!

### Reply 12:
This is vnish....

### Reply 13:
lol saw comments on twitter point out that you violate the license and basically admitting it.Funny how it's been the case for so many years, ever since you started, but being a public company is another issue all together

### Reply 14:
Code injection. Learn how that works Andrew and please don't be racist towards me or my friends in this thread it's not coolSecond you realize every firmware in that argument of your violates it including braiins, lux etc ""translation of a work is considered a kind of modification. "" So by the injection is the only thing that is okayalso on that note cgminer is translated from other worksdon't even live in your country unless you are now in Ukraine also last I checked cg isn't in rustAlso I see Austin is your puppet who is just as easy to trigger as you. Thank you I now have another person to annoy on the internet when I am bored. You do realize that is the only reason I checked this thread is because of him. Looks like your fav person in the whole wide world is back!Anyone nice to know my fav person from Australia still thinks of me.

### Reply 15:
lol - you going back to your old lies again.Still claiming I'm racist with nothing to back it up.Instead of pretending you're allowed to violate my cgminer license, tell everyone you are lying to, what is written in the license... and yes as the world knows, and I have never claimed otherwise (though you lie about that also)No I did not write all of cgminer.I just happen to be the 2nd main developer of it and the current developer of it.My git of cgminer has been around since 2011.

### Reply 16:
Yay thank your twi<rest of thread truncated>
","[
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    ""hardware_name"": ""Bitmain Antminer S9, S9j, S9i. T9+, L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon T2t"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S17, S17 Pro, S17+, T17, T17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S19, S19 Pro, T19, S19j Pro, S19j, S19+, S19a, S19a Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT Whatsminer M20S, M21S, M30s, M31s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Mining Machine (Mining Rig) 8 GPUs NVIDIA GeForce RTX 3090 24GB GDDR6X Graphics Cards & All Components, 960MH/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  }
]"
23385,"Date: 2021-01
Topic:  Firmware for WhatsMiner model M1-V1.2 - with ZYNQ mainboard.
### Original post:
Check this out at the manufacturer (MicroBT) website:<link>

### Reply 1:
Thank you for info - I checked them before but there is no option for ZYNQ version. Did you update firmware on this/similar unit before?I believe that the only one option is via SD card (but maybe I'm wrong). I would like to check with someone who has experience with this.My unit doesn't provide IP address - and my assumption is to update the firmware first.

### Reply 2:
No I havent updated firmware for the first Whatsminer generations (M1 ... M3X).

### Reply 3:
I tried to search but it seems there is no trusted source to download firmware for m1 with the ZYNQ control board.But I have a link for an SD card image for the ZYNQ control board if you want then check this link below.- <link> try to explore from this link below if you can find the upgrade firmware for your unit.- <link>

### Reply 4:
Thank you for your help BitMaxz - I managed download firmware, find IP via software and hookup the unit for mining.

","[
  {
    ""hardware_name"": ""WhatsMiner model M1-V1.2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ZYNQ mainboard"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  }
]"
23192,"Date: 2020-01
Topic: Need help on T3H 50T
### Original post:
I have some problems with some of my T3H miners. I got the error code 24 witch mean the communication of some chips doesn't work well. So I get the defective board out and when I run the diag, I see that there's a problem around the chip UT3 but even if I change it, the problem still there. Is anyone here do repair their board and can help me with that.

### Reply 1:
Did you replace the chip under that defective hashboard? or you replace the hashboard with the new one but you still getting error 24?If you replace the hashboard still getting error 24 can you try to replace the ribbon cable(known working ribbon cable) or you can use the ribbon cable connected from other hashboard and put it to new hashboard and test again(Make sure the old ribbon connected to that defective board before is removed)? Then do a test. If you still have this error well the only solution for that is to request a repair from inno.

### Reply 2:
I have T3+ units, they have been rock solid.1) Did you have problems with your unit from new?2) What did innosilicon have to say?3) So u got a spare board and put it in?I would want to firmware to default just so that any settings and triggered faults (non configurable) are removed.

### Reply 3:
thx for replying!1) Yes. They are new miners.2) I cant see the defective board on Innoscilicon cause the board shut down. Inno monitor say error 24 (communication error from chip) and the board #2 is not working.3) I have new chips.

### Reply 4:
Yeah, I replace the chips but the problem always there. I change basically everything around the chip and nothing happened. Same error 24.

### Reply 5:
I've never disassembled the T3, are you telling me that the hash chips are user replacable? Or is this another type of chip, that u were able to diagnose ? Are you able to bring in another hash board from another unit that is known good to see if it is indeed the hashboard?

### Reply 6:
I change the chip from the hash-board and yes they are replaceable. They're 114 chips.. so I run a diag to see where the problem is.And with this one in particular, it say the the SPI is failing somewhere between those chips.I tough it was the UT3 but it isn't.

### Reply 7:
That's a deep dive, how can you sure that the chips you replace are defective/damaged chips? Where did you get the chips that you replace on hashboard chips? You might get the chips from another scrap hashboard or maybe you bought them online?Replacing all chips is a deep dive unless if you are an expert on hardware issues. What I can suggest is better replace the hashboard or if you want to go in deep hardware solution you will need to get a hashboard that you know working and use multitester to check every line from the chips and use the working hashboard as your reference. This will be a good start to find the difference between damaged hashboard and working hashboard.In case you can't find the damaged chip better to replace it with a working hashboard because replacing all chips will give you a headache.The software won't tell you which one is damaged since your problem is related to hardware as I said above you will need a multitester to find those damaged parts.

### Reply 8:
I do have all the tool that I need. I run a diag with a control board and a power supply. It tell me where the signal stop. After this, I have an oscilloscope and look at my signals and I can see SDO/SDI/CLK/CS and from that I know where the problem is. Maybe its too deep to ask something like that here.I don't replace all the chips. Just the chips that I need to.

","[
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    ""hardware_name"": ""T3H miners"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""chip UT3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ribbon cable"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""T3+ units"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""new chips"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""oscilloscope"",
    ""hardware_is_owned"": true
  }
]"
16063,"Date: 2021-05
Topic: Beginner Antminer S17 Can this work?
### Original post:
Hello Guys!I am from Germany, and I would like to know how I can start mining.All I have is a bitcoin account connected to a bankaccount and knowledge how nicehash works,and the feeling that antminer s17 costs 2000 euros and is the best miner with 56thz.the electricity is expensive here, 37 cents per KWH.Do you guys have any idea if this could work or how to better do it?I have 178 euros now, and was thinking of selling an expensive bike or something to get money for a mining device cant get any credit.How much money would i make?My estimation is that with a solar panel it could work.that is all. look forward to your tipps!Greetings

### Reply 1:
Tag,If you don't already own a miner (and the S17's are less than reliable with lots of them failing after not much time running) I'd recommend you just buy some BTC and sit back and watch its value increase. Trying to buy a miner now is close to fruitless. And we won't even get into your electricity <truncated>

### Reply 2:
Base on your Electricity rate I think you can't able to make any profit with Antminer s17. Just calculated with some mining calculator. If you want to calculate it with your self I suggest you try this tool below.- <link> current profitable SHA256 miner according to whattomine is ""MicroBT Whatsminer M30S++ 110T"" with 37 cents/Kwh. You can check it for yourself from this link below also you can see other ASIC miners there with higher profitability.- <link>

### Reply 3:
power is too costly for you do not mine

### Reply 4:
Forget about mining altogether, honestly you will most certainly end up losing money with the power rate you have, mining at its core is competing against other miners, the two most important factors are the miner's efficiency and the power rate, the latter is a lot more important.Even if you had the most efficient gear which is say the S19 pro, you still make only 15$ in profit after the power bill, someone else who has 6 cents per KwH which is just the average in China, makes the same amount with an old T17 which he can get for 15% of the price you need to pay for that S19 pro, and you will need at least 2-3 years to ROI if ever.

### Reply 5:
Id cut trying to mine btc, try mining other altcoins which might hold a price on the long term, in your case id look for long term investments not short term ones also do your research on the solar panels youre going to use, as they might not provide sufficient electricity or a stable circuit, , feel free to pm regarding any questions

","[
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  },
  {
    ""hardware_name"": ""MicroBT Whatsminer M30S++ 110T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": false
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]"
23362,"Date: 2020-11
Topic: Two Antminer S17 problems
### Original post:
This is the initial state before the clock sets:Code: Machine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203620K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss, 25756K reserved, 16384K cma-reserved, 0K highmem)Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xffc00000 - 0xfff00000 (3072 kB) vmalloc : 0xcf800000 - 0xff800000 ( 768 MB) lowmem : 0xc0000000 - 0xcf000000 ( 240 MB) pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) modules : <rest of post truncated>

### Reply 1:
And this is after. The hashrate dropped to zero in this section.Code: 2020-06-19 21:44:43 <truncated> <truncated> 21:44:44 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 195, reg = 12020-06-19 21:44:52 <truncated> read temp sensor failed: chain = 0, sensor = 0, chip = 55, reg = 02020-06-19 21:44:58 <truncated> <truncated> 21:44:58 <truncated> <truncated> 21:45:05 <truncated> read temp sensor failed: chain = 0, sensor = 0, chip = 55, reg = 12020-06-19 21:45:12 <truncated> read temp sensor failed: chain = 0, sensor = 1, chip = 40, reg = 02020-06-19 21:45:13 <truncated> <truncated> 21:45:25 <truncated> read temp sensor failed: chain = 0, sensor = 1, chip = 40, reg = 12020-06-19 21:45:32 <truncated> read temp sensor failed: chain = 0, sensor = 2, chip = 180, reg = 02020-06-19 21:45:45 <truncated> read temp sensor failed: chain = 0, sensor = 2, chip = 180, reg = 12020-06-19 21:45:51 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 195, reg = 02020-06-19 21:46:04 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 195, reg = 12020-06-19 21:46:13 <truncated> read temp sensor failed: chain = 0, sensor = 0, chip = 55, reg = 02020-06-19 21<rest of post truncated>

### Reply 2:
Can anyone suggest anything to help here?1. After around 20-30 mins of mining, I get a message of No data (in chinese) and it stops mining for about 10 minutes. Then starts up again and continues mining. Wondering whether it's a BT thing...2. Of the 3 chains on the reporting page, the first one doesn't appear to have any hashing rate. The asic status is ok and all the other figures. The PCB temp is 51, the chip temp is 71 and the frequency is 555 compared to the other 2 at 585. The fans are all up around 6000rpm.

### Reply 3:
copy the logs and paste them here in code formatCode:this is in code format

### Reply 4:
Looks like ANOTHER case of the dreaded Temp sensor <truncated> read temp sensor failedCheck here for more information. Very common: <link>

### Reply 5:
Could be a network issue, try a different ethernet cable, and also reset the miner and flash the latest firmware, you should also include the kernel for this miner.I suppose the kernel log is for this miner, judging by the temp sensor error on chain 0Code:1970-01-01 00:17:11 <truncated> read temp sensor failed: chain = 0, sensor = 0, chip = 55, reg = 11970-01-01 00:17:30 <truncated> read temp sensor failed: chain = 0, sensor = 1, chip = 40, reg = 11970-01-01 00:17:50 <truncated> read temp sensor failed: chain = 0, sensor = 2, chip = 180, reg = 11970-01-01 00:17:57 <truncated> read temp sensor failed: chain = 0, sensor = 3, chip = 195, reg = 0Each hashboard has 4 PCB sensors labeled 0,1,2,3, after a lot of research, help, and testing we have come to realize that this issue is not caused by the temp sensors themselves but rather bad soldering on one or more of the heatsinks/chips, to fix this you will need to firstly identify the bad chip/heatsink by taking the board out and physically inspect it if there are no signs of anything you will need to use a multimeter like a ""fluke"" or buy a fixture tool to know which chip/heatsink needs soldering, and then, of course, you will need to ha<rest of post truncated>

### Reply 6:
Thanks for your patience I realise that I'm probably asking questions that will make people want to pull their hair out. Once I get it, I'll be able to just leave it running.I've downloaded those files, and there are 3 sets. My miner is an S17-53T so I'm not sure which of these to use, as they don't match the filename precisely?

### Reply 7:
This may well be another stupid question, but I downloaded what I think is the firmware for the <rest of thread truncated>
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    ""hardware_name"": ""Ethernet cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Multimeter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Fixture tool"",
    ""hardware_is_owned"": false
  }
]"
16187,"Date: 2022-01
Topic: bitcoin ASIC develop cost in 2022
### Original post:
Hello !Let's say I want to create clone of Antminer S19j Pro 104TH/s 3068Watt I think it's 5nm technology.Let's discuss such details as:1) minimal investments needed to create 5nm ASIC design2) time from start to final product3) tech specs for such design (how many transistors per 1TH/s and so on)4) 300mm wafer price5) other important questionsIf there are similiar topics on bitcointalk, then please let me know.***To start discussion I will write some thoughtsAntminer S19j power consumption is 3068WattsLet's compare it with 5nm AMD CPU.For example AMD Ryzen 7 5800X has 4.15 billion transistors and consume 105Watts.3068 / 105 * 4.15 = 121billion transistors for Antminer S19j. It's very rough estimations, but I think imprecision is about 10% +-AMD Ryzen 7 5800X sale price is $4491billion 5nm transistors price is 2.25usd(source: <link> AMD Ryzen 7 5800X prime price should be 4.15 * 2.25 = 9,3375usd (9dollars 34cents)Antminer S19j prime price should be 121 * 2.25 = 272,25usd (272dollars 25cents)By saying ""prime price"" I mean not final product, it's just wafer, wafer not cut to dies not packaged to chips and so on.

### Reply 1:
Got several hundred million dollars to risk? ref this article from 2019More to the point, once you have a chip designed you then have to test the design and there is NO guarantee that it will perform as expected. The Canaan A921 miner using 10nm chips from Samsung is a poster child for that -- actual chip performs around 50% of what modeling said it should run.Fact is, if you have little to no experience in designing high performance mixed-signal chips you can dream but should forget about actually doing it...

### Reply 2:
NotFuzzyWarm,I have no experience in designing chips, but for me it is very very interesting theoretical price of bitcoin ASIC.I think for many bitcointalkers too. Numbers from your article are saying nothing.how many transistors are in this 28nm planar device or in 7nm soc ?I can provide you info about russian quasi-CPU, each develop cost was +- 25mln usd.baikal-m 28nmdie size 350mm2transistors 3.5blnelbrus-8c 28nmdie size 240mm2transistors 2blnso we have develop cost71-104thousand usd per 1mm2 or per +-10mln transistorshundreds thousands dollars, not hundreds millions.it's 28nm technology, 5nm is more expensive.***Of course chip should be tested.Fabs has special service called ""shuttle"". You can provide them design as low as 1mm2 and they will create chip for testing purposes.<link> 12nm 26000eur/1mm2TSMC 28nm 9000eur/1mm2Once again, we speak about thousands, but not millions dollars.I can't find prices for 5nm shuttle. But I feel it will be in 100000eur/1mm2 region.***sha-256 core is very simple in design.one-round need about 20k NAND gates or 80k transistors.bitcoin uses two-round sha-256 = 160k transistors.5nm has about 160mln transistors per 1mm2.So for 1mm2 5nm design we jus<rest of post truncated>

### Reply 3:
I like this thinking.Why are we relying on the Chinese to make these and then make a killing off them?We should already have USA made miners! These machines don't cost that much to make, and they are very simple machines.One thing to be said though is that we would need to create our own chip manufacturing as well as we don't want to again: rely on China for chips.-Graham

### Reply 4:
My friends, there's a reason for everything, including the fact that chips are made in Taiwan. And the cost to launch a new product is huge. It is very naive to think otherwise.It only makes sense if you are backed by a firm that's willing to support your R&D and prototyping expenses.

### Reply 5:
I don't think if there is USA made miner I have never seen any miner made in the USA there are some unique miners that I heard from offordscott telegram and I think some of those miners are US made but outside the telegram I never heard any of them. Most of the manufacturers are Chinese and I don't know if there is another miner created outside China. Maybe there are but not widely promoted here or outside the forum. For making a clone of those miners I don't know you can make a clone of these units like Bitmain gears might have their own serial number built-in with a unique chip but if you can also develop your own program maybe you can make a clone that running the same as the original one. I'm sure you can save many people on buying very expensive miner.

### Reply 6:
There were US manufacturers of bitcoin miners, Butterfly Labs, Cointerra, Hashfast. They all ended up as bankrupt scams. (There are posters here still around who got burned bad who might chip in)Then we had KNC in Europe, started out well, ended up a disaster, then Spondoolies in Israel, who again started out strong, then diminished to nothing in the onslaught of bitmain.Although all these ""manufacturers"" pretty much depended on TSMC and Global Foundries for chip production.There are others, if you're interested take a look here: <link> n<rest of thread truncated>
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  {
    ""hardware_name"": ""AMD Ryzen 7 5800X"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan A921 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""baikal-m"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""elbrus-8c"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USA made miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain gears"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Butterfly Labs miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cointerra miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hashfast miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""KNC miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Spondoolies miners"",
    ""hardware_is_owned"": false
  }
]"
24027,"Date: 2022-10
Topic: Colocation Options in Eastern Washington
### Original post:
Hello everyone,I was wondering if people know colocation places in Washington state (preferably, Eastern Washington)?Thank youP.S. Apologies if I used the wrong board for this question.

",[]
23285,"Date: 2020-06
Topic: Technical issue with Love Core Aixin A1
### Original post:
hi everyone I need help with one of my Love Core Aixin A1 miner.it starts okay and gives 21-22ths but after 8-10min it stops with 0/ths.reason is failed to read temperature<link>

### Reply 1:
According to the image, it seems the chain0 has an issue on reading the temperature and I think the issue is related to the temperature sensor. If you have some technical skills you can repair the one hashboard(chain0) and look for temperature sensor to check and maybe it has full of rust and dust. Cleaning them with ""lacquer flo"" thinner might solve the issue.But if you don't hae technical skills much better disable the chain0 you can remove the one hashboard from the control board and PSU so that you can still run the miner with the remaining two hashboard.

","[
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    ""hardware_name"": ""Love Core Aixin A1 miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""temperature sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashboard(chain0)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  }
]"
23599,"Date: 2021-06
Topic: T17 no hash
### Original post:
Hello, I share the problem that is happening with my T17, if someone can help me, I will thank you, since I am a rookie with this.At first when you turn on, the main panel it indicates ""socket connect failed connection refused"" but after a while it normalizes and it seems that it would start to work but the hash does not raise.The machine indicates 0 hash but the green led flashes normally. Another behavior that strikes me is that the power supply does not raise the tension.<link> machine has 2 hashboard . I have already tried to update the bitmain firmware and it behaves the <truncated> Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch<rest of post truncated>

### Reply 1:
It's pretty normal for the miner to show socket connection failed when it's booting, don't worry about that.Seems like the voltage is a bit too low, it's likely that you have a bad PSU, can you confirm if all 3 fans on the PSU are spinning? also can you test 1 hash board at a time?

### Reply 2:
Hi , sorry my friend but the voltage is good PSU is good .... i see this :2021-06-16 17:44:21 <truncated> <truncated> 17:44:21 <truncated> stop mining: over max temp2021-06-16 17:44:21 <truncated> cancel thread2021-06-16 17:44:21 <truncated> cancel thread2021-06-16 17:44:21 <truncated> ****power off hashboard****please run the miner with only one board ... and see if the problem persiste, if is good, run with other hashboard and see ...for this problem, only 2 problem is possible, check :- Check all heat sink, is possible one is half droping !- One chips is defect, or bad soldering ...

### Reply 3:
CPU1: failed to boot: -1Brought up 1 CPUsSMP: Total of 1 processors activated (666.66 BogoMIPS).CPU: All CPU(s) started in SVC mode.devtmpfs: initializedVFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 nspinctrl core: initialized pinctrl subsystemNET: Registered protocol family 16DMA: preallocated 256 KiB pool for atomic coherent allocationscpuidle: using governor menuhw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint <truncated> maximum watchpoint size is 4 bytes.zynq-ocm f800c000.ps7-ocmc: ZYNQ OCM pool: 256 KiB @ 0xcf880000vgaarb: loadedSCSI subsystem initializedusbcore: registered new interface driver usbfsusbcore: registered new interface driver hubusbcore: registered new device driver usbmedia: Linux media interface: v0.10Linux video capture interface: v2.00pps_core: LinuxPPS API ver. 1 registeredpps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <truncated> clock support registeredEDAC MC: Ver: 3.0.0Advanced Linux Sound Architecture Driver <truncated> Switched to clocksource <truncated> Registered protocol family 2TCP established<rest of post truncated>

### Reply 4:
s17pro.This is board 2 on the machine after about 10 minutes. still showing ""socket connect error"". I can run board 0 and board 1 off of the board 1 data cable but when I switch it to board 2 it doesn't read the board or work at all. I was about to ship board 2 out for repair. but am trying to figure out if it's the controller board. I had vnish firmware on the unit when I bought it used but reset to factory settings to try to figure out the problems. Board 2 has always had one bad chip and seemed to run much hotter than the other two boards. I've had various error messages. Can't find chips, temp sensor not reading, failed to initiate pic controller,etc. I'm going to replace.

","[
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    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""main panel"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fans on the PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heat sink"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""controller board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""vnish firmware"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Board 2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Board 0"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Board 1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""data cable"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""temp sensor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""pic controller"",
    ""hardware_is_owned"": true
  }
]"
11089,"Date: 2022-01
Topic: problem with test fixture s9 hashboard
### Original post:
i have bought a test fixture recently and when i connect my almost healthy hashboard to it it shows me this error on screen after testing it:1 pattern failed change to next voltage and freqwhat should i do for it?also when i test the other hashboard that is not working it says there is no hashboard

### Reply 1:
Bought what test fixture, and from who. There are a few different ones out there...

### Reply 2:
[/img]its zj0001000001this is the command that im receiving on most of my hashboards <link>

","[
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    ""hardware_name"": ""test fixture"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  }
]"
23639,"Date: 2021-07
Topic: S19 Stopped!
### Original post:
all the devices went offline suddenly so I thud it's a problem with the pool then I saw everything is back to normal except one miner I checked the first log and find an answer in the forum that the miner needs to be software updated I update the software and still facing another issue, everything shows normal but the miner isn't hashing.a photo shows everything is normal <link> 02:04:34 fan_eft : 0 fan_pwm : 1002021-07-25 02:04:34 create thread2021-07-25 02:04:34 fixed working voltage = 12602021-07-25 02:04:34 Chain [0] PCB Version: 0x01002021-07-25 02:04:34 Chain [0] BOM Version: 0x01002021-07-25 02:04:34 Chain [1] PCB Version: 0x01002021-07-25 02:04:34 Chain [1] BOM Version: 0x01002021-07-25 02:04:34 Chain [2] PCB Version: 0x01002021-07-25 02:04:34 Chain [2] BOM Version: 0x01002021-07-25 02:04:38 Fan check passed.2021-07-25 02:04:39 chain[0] PIC jump to app2021-07-25 02:04:41 Check chain[0] PIC fw <truncated> 02:04:42 chain[1] PIC jump to app2021-07-25 02:04:43 Check chain[1] PIC fw <truncated> 02:04:44 chain[2] PIC jump to app2021-07-25 02:04:46 Check chain[2] PIC fw <truncated> 02:04:46 create thread2021-07-25 02:04:46 max sensor num = 42021-07-25 02:04:46 <truncated> start...<rest of post truncated>

### Reply 1:
DEAD PSU.In your case you need a psu.So order it from Bitmain<link> look it is out of stock.so you now have a 5000 dollar or more brickand out of stock here<link> available here<link> here<link> this one on ebay. very pricey<link> do you live what country?

### Reply 2:
Thank God I purchased an extra one 2 weeks ago in will come today, the problem is one of the screws isn't the original dose it make since its the reason that this power supply dies?

### Reply 3:
you are not making sense who told you to update the firmware.and WTF does this mean:the problem is one of the screws isn't the original dose it make since its the reason that this power supply dies?What are you using google translate?

### Reply 4:
I did a search and find a post in bitmain issues section someone post a reply ""try to update firmware .."" and the thread starter answer was ""thanks its working"" That's why I update it before posting so if its work no sense to post in here.I just replaced this PSU a month ago and I lost one of the secrws that connected it with the hashboards and tried to find a titanium screw in local shops and find nothing, and I took one of the screws from a house machine and it works fine for around a month now. I upload a photo if you didn't get my point.<link> Excuse my weak English cause its not my main language as well.

### Reply 5:
As long as the screw is tight enough and the connection isn't loose - there shouldn't be a problem, I highly doubt that reason alone is what killed the PSU, what is your input AC voltage?

### Reply 6:
good point. I must ask does the room run hot? 35C or 90f or higher.is the gear clocked high speed vs medium speed.I have s17pros they like medium or low when it is really hot.Maybe you have it on high in a hot room.Maybe you have 205 or 208 volts vs 220-240if volts sag lower it kills psu's

### Reply 7:
Also just check the screw if its too long as its going through its possibly touching components.

### Reply 8:
It's a 220v and yes I used long screws long time ago and it's will take less than a minute to change the screws colour because of heat for the AC voltage am living in Kuwait so 220v is the standard and I followed mikey post about his room step by step so I have a cold and hot rooms the temperature in the cold room runs around 24-28C and for the devices setting its all runs on normal no over clocks at all.The spare parts arrived today I'll replace the power supply and make sure to send the old one for testing. ok done replacing it with OEM one and replaced one of the fans since I cut the wire, it's work fine I noticed a high pool rejection might be fixed by the next few hours if not I'll rechecking it again.after 6 hours of working I lost a fan <truncated> <truncated> 00:00:09 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro1970-01-01 00:00:10 This is fix-freq version1970-01-01 00:00:10 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro1970-01-01 00:00:10 commit version: 1821c90 2020-11-16 16:05:37, build by: jenkins 2020-12-11 11:35:431970-01-01 00:00:10 opt_multi_version = 11970-01-01 00:00:10 opt_bitmain_ab = 11970-01-01 00:00:10 mid_au<rest of post truncated>

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    ""hardware_name"": ""S19 Miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Extra PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Titanium Screw"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""OEM PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Fan"",
    ""hardware_is_owned"": true
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]"
23458,"Date: 2021-03
Topic: Antminer T9 - not the T9+
### Original post:
I have an couple of antminer T9's that has been upgraded with t9+ firmware; i have attempted to revert this back to its original firmware and to my suprise, it doesn't load? i come up with an error cannot find signatureis there an alternative firmware set that we can use to resurrect these units without getting new control boards?thanks

### Reply 1:
You flashed the recent firmware from bitmain which is a one-way street, you will need to use the recovery file and an SDcard to revert back to an older version, you will need to find the T9 recovery firmware which is no where to be found, but I believe you can use the T9+ files since they both use the same control board, this very version is what we use on the S9/S9i and S9j as well.

### Reply 2:
Thank you for the quick response.I have the firmware installed on my t9; the t9+ firmware but the miner doesn't hash; its as if control board doesn't send the command to the cards on the miner. the Miner produces chain errors in the logs.any advice on how i can get this miner running?Thanks.

### Reply 3:
What is the chain error? copy and paste the kernel log here.This could a firmware issue, while T9, T9+, and S9 (all models except the k and SE) use the same control board, each has its own firmware, just like how T17, S17 and S17 pro use the same control board but you can't run a T17 with say the S17 pro firmware, I do not have T9 to test but I'd guess the same logic applies, so you need to get rid of that T9+ firmware using a Sdcard and then flash the T9 firmware ( I included all links in my previous post)

### Reply 4:
Please use the code function to paste the kernel, something like <truncated> get fan[5] speed=1200The above example also shows that fan 5 is bad, reporting only 1200rpm which won't allow the miner to start, while this could be caused by the fact that you flashed a different firmware, it likely needs a replaclement. So replace fan 5 and then repost the kernel log, it will be a lot clearer without a fan error in place, however, chances are you are going to end up Sdcarding the miner and installing the T9 firmware version.

### Reply 5:
here is a part of the log....Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc:01[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256528[ 0.000000] Kernel command line: noinitrd mem=<rest of post truncated>

### Reply 6:
MikeyI appreciate the assistance; after 5 different fans, i have come to the conclusion that i need to try the SD card method. I will attempt this and post my results. I do appreciate the advice!John

","[
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    ""hardware_name"": ""antminer T9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9+ firmware"",
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  },
  {
    ""hardware_name"": ""control boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SDcard"",
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    ""hardware_name"": ""fan"",
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13631,"Date: 2019-11
Topic: SSH Unlock & Signature Check Removal Unlock Tool • For Antminer S17 and T17
### Original post:
nice.i have some t17e new.i would love to unlock the t17e.and back it off it currently does 53th and 3356 watts.i would prefer it to do 3000 watts not 3356 watts.i have 16x s17 pro. would love to explore a setting that goes to 35th and 1050 watts on the most efficient end.i have 2x t17ei have 1x t17i have 1x t17+i have 1x s17and a mix of 26-27 s9 s9i s9ki want to explore underclock on all this gear.basically if 1/2 ing really hurts mining i want to be ready now to underclock all this gear.

### Reply 1:
Well you're in luck! This works with all S17 and T17 models. (for the unlock and signature check removal)Ahh I see. Do you want to half it now or half it once the halving comes when you will really need that extra efficiency?The + is still a work in progress for the 17 series. For the non + models should have it posted by the end of the week or start of next week.For the S9 firmware in rocketship thread will work on S9 and S9i. You can use BTC Tool to mass flash them. But I would first flash one. Lower the settings and get around 70w/th or less if you can. Then you can flash all the others and there is a setting to scan for other S9's and mass deploy the settings you fine-tuned to the rest of them. For instructions check out this: <link> it will detail pretty much every step involved for the S9. It will also be similar for the 17 series when ready. But 70w/th is def doable with S9. With 17 series I have not even played with downclocks yet but I plan on it once my next machine lands but it should be promising.If you don't have a computer at the that location Phil you should setup like a raspberry pi with a vpn client running on it. That way you can always just vpn and play with them<rest of post truncated>

","[
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    ""hardware_name"": ""t17e"",
    ""hardware_is_owned"": true
  },
  {
    ""s17 pro"": ""16x"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17 and T17 models"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 and S9i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""17 series"",
    ""hardware_is_owned"": false
  }
]"
23950,"Date: 2022-05
Topic: Immersed T17 has high chip temperature
### Original post:
It's not just the extra 500w, the number of chips on both gears are different, the chips themselves are different, and the way they attach the heatsinks on each of these models is totally different, you can only make this comparison between two S9s running at different hashrate.But to be honest with you, I think there is something wrong with your setup, I mean even the 68C on S9 seems too high for immersion cooling, maybe it's the 30c temp outside that is causing this, you are going to need a bigger radiator and a larger pump.Also, keep in mind that the T17 runs a bit hot by default, also the heatsinks are ""loosely"" attached and depending on what type of liquid you are using, the heatsinks might just come off at any second, with that in mind, 90C isn't the end of the world, your board temps show 51c, the max is 75c, this gear will die soon anyway, so I wouldn't even bother, just mine on.

### Reply 1:
Hi Mike, Thanks for your valuable input.I too wasn't happy with S9 readings. I invested alot in this setup. The radiator is a 24x24"" wood stove heat exchanger that many miners use to operate two S19s (rated for 6,000W), hooked up to a 3,000 CFM ventilation fan.I installed the radiator and the fan to an A/C hole to push hot air out and keep the room cool. The pump is also a March MDX that I've got after miners have recommended it. The tank is designed for S1X/T1X models with two chambers and a flowplate.This T17 is the upgraded version (reinforced), I got it from China for $1,000. They have sent me a confirmation video showing the machine running and it was giving 42T with max temp 80C on air. That's what's triggering me. It worked fine on Air but not on immersion ( I couldn't even get it to 35T by immersion)I don't know what's wrong with my setup, I've put serious money into this setup and spent 6 months building simple setups before I got to this stage, and unfortunately, the result is not exciting. Here's my setup <link> if you're interested to give your two cents.

### Reply 2:
Hello,I could not wrap my head around how weird this is.I have an immersion setup sized for 6,000Watts. I got an S9 to test things out and was able to hash at 16T drawing 1.4kW with chip temperature 65-68C. Never exceeding 70C.I felt confident enough with my setup to get a T17 42t, with Braiins installed, it's currently sitting at 1.9kw with chip temperature in late 80C.I don't understand how a 1.4kw S9 is 65C and a 500W increase in a T17 shoots chip temperature to almost 90C!Ambient temp is 30C, fluid inlet temp is 45C.Here is an image showing both settings for S9 and T17:<link> my setup <link> it be something about T17 sensors? My setup is oversized for this kind of power consumption!

### Reply 3:
I have noticed in the past when comparing Brains, Vnish, and stock firmware all running fixed frequency and identical conditions that Brains reports temperatures close to 10degC higher than stock or Vnish on the 17 series miners. Also, stock firmware on the T17 has a temperature target of 80 deg C, so if Brains is telling you 90, you are probably pretty much right on target.

### Reply 4:
Hello,Are you talking about chip or board temperatures?

### Reply 5:
Chip temperatures. I believe the board temperatures are accurate. I don't know for sure what the cause is, but I believe it has to do with the calibration of the external sense input of the TMP451 used on these boards. The external sense input is used to read the temperature of a sensor integrated into the ASIC, and needs correct calibration settings to get accurate results. The internal sensor on the TMP451 that is used to get the ""board"" temperature is calibrated at the factory so it doesn't need any additional setup by the firmware.What mikeywith mentioned is also true though. You may need different flow rates because of the different power density. A s9 running at 1400W is using only ~7.5W per chip. A T17 at 1900W is using ~21W/chip.

### Reply 6:
Makes alot of sense. What Mikey said is also concerning to me. Before I even get a T17, S9 running with temp 65C is alot and is not what an immersion system gives. You said 80C is right on the target considering Braiins exaggeration, but the gear is immersed, I should not be on target but much lower. I'll look through my system and see what I can improve, I know for sure that everything I use is high-material, could be flow-related

### Reply 7:
I'm doing 40T on my T17 with temps in mid 80s, since this reading is not accurate on Braiins, do you recommend I rise the dangerous temperature (92C) to avoid auto-shutdown? it's getting there.

### Reply 8:
Ha... at your own risk! I'm only giving you the info I observed in the past, and I didn't look into it further to get any definitive answers. I'd suggest doing your own experiment to verify what I saw. You can run stock firmware immersed if you have some fan spoofers. If you run stock in the same setup and the temp<rest of thread truncated>
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23167,"Date: 2019-12
Topic: ANTMINER S9 How to off two hashboard ???
### Original post:
Hello everyoneIs it possible a put off two hashboard in Antminer s9 and works only one Huh?

### Reply 1:
I try this earlier This is don work The Antminer cannot connect to the pool,when the cable of 2 hashboard a turn offDo you have any idea ?

### Reply 2:
Switch the firmware to braiins OS and do the suggested above again. The suggested above should be work because bitmain has a guide that you need to test the hashboard one by one so it means it should run even one hashboard. You might be have a faulty hashboard that is why you are getting error when running one hashboard. Try to use Braiins OS or check your Ethernet connection.

### Reply 3:
S9's should run fine on any number of boards, suggest testing each one in turn to find the dead one.

### Reply 4:
True: I'm running my reference one with two boards enabled so I can run it on a 120 volt power line. Two boards using stock firmware results in about 9th speed at slushpool with 1,000 watts being pulled at the power plug. Which oddly enough seems to be about the same as running three boards in ""low power mode"". Go figure.

### Reply 5:
Try removing the data cable and power cables. (turn it off first)To the hash boards you dont want running.

### Reply 6:
The S9 miners do not need all three boards, a single board works. You have another problem. Of course two boards also work.

### Reply 7:
I have 27 s9 units.three boards. 23two boards. 3one boards. 1they work. so your issue is something else.load some views of the logs.also what modelalso what firmware?

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23430,"Date: 2021-02
Topic: Innosilicon T3+ Firmware
### Original post:
Hello, I was just curious if anyone has developed or found aftermarket firmware for this unit? I would like to attempt to overclock it a little higher if possible. Any tips would be greatly appreciated as i cant find any info anywhere.Thanks!

### Reply 1:
You can find the firmware of this unit directly from their support download from here <link> are you talking about custom firmware where you can able to overclock the unit?No one posted a custom firmware for this unit yet you can only able to overclock it through the dashboard under <truncated>

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16120,"Date: 2021-08
Topic: [b]is it possible to mine bitcoin on paper?[/b]
### Original post:
So mining bitcoin is baced on the SHA-256 algortiemis it posible to Guess a random number and do the SHA-256 and then enter the result on the bitcoin website ( witch I do'nt know the url or any thing about it but there probebley is somthing like it ) and then if the number is corect the reward will be given.or maybe is there a way to just solve math problems on a paper to mine bitcoin?

### Reply 1:
Well... Yes, *theoretically* it *should* be possible to do <truncated> need to take the header of the most recent valid block, manually create a new header (<link> then you'll manually have to pick a nonce within this header and calculate the header's sha256d hash on paper... The odds of picking a nonce that leads to a sha256d hash under the current target is astronomically small. But let's say you find one: to finish it off, you'll have to find a way to broadcast your block to the other nodes (nope, afaik, there is no ""website"" where you can submit blocks, you'll have to find a way to broadcast it to other nodes manually).To top this all off, you'll have to do this BEFORE the rest of the network finds a new block and broadcasts it... As soon as they do, the rest of the network will be using the new block's header to build their blocks on, and your block will be stale. So, you'll have to finish all these steps in an average time of 10 minutes... Maybe you're lucky and the rest of the network needs 15 minutes this time, but it might also be 2 or 3 minutes...Now, i don't know how fast you are, but here's an article you could read: <link> guy hashes 0.67 hashes/day, so if he managed t<rest of post truncated>

### Reply 2:
I get the sha256d part but how can I broadcast my hash to other the nodes?

### Reply 3:
Well, you'll probably have to run at least some kind of daemon... You'll need to connect to other node(s) and then send them your block. More info can be found here: <link> you'd run the reference client node, you could use the submitblock json-rpc call... it seems chainquery does not support this call: <link> don't know any online tool or service that offers this feature. If you read all protocols, you'll probably be able to build a much lighter client, one that only connects to other nodes and relays your block, but i don't think this is something you can do using binary's available on your OS, nor do i think there are sites out there that'll help you with this either.Now, just to be 100% sure, this is all for learning purposes, right? Cause, there's no way you can actually pull all of this off IRL... You have allmost no chance of solving a block using a latest gen ASIC, let alone an older ASIC, let alone a FPGA, let alone a GPU, let alone a CPU... So your odds of solving a block, even if you'd find a good nonce by pure miracle, are 0 (since there's no way on earth you'll be fast enough generating a block, a block header, a sha256d hash and broadcast it in the ~10 min window)

### Reply 4:
I'm paining to make a custom miner from scratch(have experience with micro controlers and fpgas)BTW thank you for your infoif anyone reading has atempted to do so, have you succeeded?

### Reply 5:
Then read the to post that is pinned to this section Mainly point-3. FPGA's are useless for mining BTC. Even today's 100THs ASIC-based miners have a very very small chance of ever finding a block in the lifetime of any single machine.As for folks making ASIC-based miners that use existing chips, just check the Hardware section. There are 2 folks doing it there.

### Reply 6:
You mean ""assembling"" a custom miner I suppose.Mining isn't solving math problems, people who use that term to explain how mining works either have no clue or are just trying to come out with the simplest explanation for the average joe to digest which is fine for those who don't care much about how mining actually works, but the reality is mining is all about guessing a random number, the faster you can make and submit your guess the higher chances of winning a block.So if you want to mine using a piece of paper and then type that hash on your PC and broadcast it to the network, nobody will stop you, a hash is a hash and it will always have a chance of hitting a block, but then I am afraid by that by the time you put the pen down and start typing it on your keyboard, someone else will hit a block and then the hash of the previous block changes which will make your paper hash completely useless with 0% chances to hit a block.

### Reply 7:
Um, just look in the Hardware section of the forum...<link> is Sidehacks original small USB sticks<link> is his newer USB sticks and his Terminus pod minerThose are all in production and available through several resellers including several on Amazon and eBay<link> is his latest one now in final testingAlso there is <link> which is jstefanop's Apollo combined BTC Node & miner

### Reply 8:
I got more confused by ""guessing a random numbe<rest of thread truncated>
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23183,"Date: 2020-01
Topic: Antminer T17e is not powering
### Original post:
Hey guys! can anyone help me about this. my antminer t17e is new and after a lots of problem with the electricity the miner goes power off. I try to open it again and it dont power on anymore. 1 fan on the power supply is running but the whole miner is dead. What should I do ? Thanks in advance.

### Reply 1:
All the new generation miners such as T17,T17e,T17+ and S17,S17+,S17pro require a stable voltage between 200v and 240v, anything below or above will burn the PSU or cause a partial damage to it. You did mention this There is a good chance that you have burned 2 fans on the PSU, if you have another miner try to replace the two fans that don't spin and see if the miner will power on, if it does not - your PSU is dead.also there could be some protection-mode in the PSU, if you don't feed it with 200v-240v it won't turn on,and thus the miner won't power on, so make sure you measure the voltage.If non of the above works, then you will have to buy APW9+_14.5V-21V from Bitmian for 134$ + shipping.

### Reply 2:
A small video of you turning it on could be interesting. As everyone else said: What happened with the power?

### Reply 3:
explain to us this statement""after a lots of problem with the electricity""did you have a blackoutdid you have a brownoutdid you have a power surgedid you have rapid power on power off power on power offthat power supply needs around 205-240 volts for each plugthe 2 power cords need to be able to give 10 amps of power to each plugMy thoughts are you are not feeding 2 cables with say 220 volts and say 9 amps to the unit.if the power supply thinks 1 plug is dead the miner does not turn on.that is pretty easy to fix simply make sure the 2 cables can feed the power in and they work.3 bad case issues maybe be 1 of them 2 of them or all 3 of them1) killed the psu with your electrical issues2) killed the controller with your electrical issues3) killed the hash boards with your electrical issues

### Reply 4:
to further elaborate on this if you put 240 volts into 1 plug and 205 volts from another plugIt could be a bad issue.I feed my gear with<link> get them at better prices but they work great with bitmain 2 plug gear.

### Reply 5:
Problems is:1. The power cord is overheating2. The extensions and wall plug is also heating3. I tried to use AVR 3000w and plug both power cord to 220v but its still overheatingI also hoping that the psu protection-mode does that.

### Reply 6:
You need a Voltameter or a kill-a-watt tool, do not plug your miner in the latter unless the device can handle 3000w on 220-240v which is not very common, but that tool is good enough to measure the real time voltage, if it's less than 200v or above 240v then forget it, it can't run antminer T17 and you will need some sort of voltage regulator to be able to run your miner.They are heating because of two reasons1-Low voltage2-Wire size is not large enough to handle the current.for point 2, it's not just about the wire that goes into the PSU, it's all the wires from the PSU to the grid, you need to give us more information about your infrastructure to help you better.you can also use this wire size calculator to get an estimate of what wire you should use, generally the T17 draws about 15 amps on 200v and you will need a 16awg Copper or 12awg Aluminum for this setup.

### Reply 7:
Ahh I have an AVR 3000W and it simply does not have the testicles to run a t17eie that is an under powered unit.the t17e pulls juice hard real hard about 3300 watts. It is over spec on both of my units.the avr 3000w can supply about 2400wattsyou have this correct?<link> even if the t17e ran true to form and pulled 2850-2950 watts it is too much for your unit.Stop trying to pull a trailer with a kia forte. Also what is your wall outlet power ?If you want to run a t17ethe wall outlet needs to be 205-240 voltsit needs to be a 20amp breakerit needs 12 gauge copper from the breaker to the outlet.I will use this outlet<link> cable<link> this cable<link> plug the y-cable into your miner.

### Reply 8:
Wall outllet is 220v, idk about the breaker. Also do you advice to use AVR ?Thanks for this information tho.

### Reply 9:
The avr can not handle the draw the t17e does. Don't use it for the t17e.do you have a photo of the 220v outlet ? If you do I can figure out what cabling for you to try.

### Reply 10:
AVR is only good for PCs so not good if you use it for your miner.Much better use the thick extension or plug the miner directly to wall outlet and test.If it still not powering try to check your PSU remove cords from the control board and hashboard and run the PSU alone check the extension and wall outlet if it still hot while the PSU is running. If it's not hot your issue might be inside the miner maybe some parts are shorted(Maybe one of the hashboard has a loose heatsink that may touch to other parts) that leads to the power supply and extensions become hot.If you have Multimeter <rest of thread truncated>
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24180,"Date: 2023-10
Topic: Hashrate split
### Original post:
This most likely belongs in the Pools area.Setup sub accounts in the pool is best. However, not all pools allow it.

### Reply 1:
you could try viabtc.comset up 4 sub accounts with 4 addresses to pay to.

### Reply 2:
Hi,Let's say I have a total hashrate of 500Th and I wan't to split this over multiple wallets. How would I need to do this without that the coins pass my own wallet ( for legal issues )Person A: 100 THPerson B. 50 THPerson C: 200 THPerson D: 75 THTotal 425 THThe 75 TH is for example a buffer in the hashrate of A, B, C or D drops below there fixed number.Looking for feedback, thx.

### Reply 3:
Use a pool the gives you the ability to create subaccounts, most importantly the pool should let you pick different wallets for different subgroups, a good example of a pool that does exactly that would be viabtc pool.This can't be done on a pool level alone, not on a local level alone either, you will need a lot of work to get this done, here is an idea off the top of my head.You create 5 subaccounts A, B, C, D, and E, E will have the buffer hashrate, in the pool settings set a ""low hashrate notification"", this will send you an email once one of the main 4 accounts fall below the threshold you specify.up to this point, everything can be done by you or any other person, the following will need a programmer to write a script which would intercept the email and then access the E miners on your local LAN and change the worked from Worker.E to worker.B.Those 4 lines are easy to write and read but certainly are not easy to make, and I don't see how applicable it is, if I was you I would ""force"" my clients or whoever owns 4 accounts to accept my way of settling hashrate drops.Say they get weekly payouts, every Saturday night you check the average weekly hashrate, account A has 100TH aver<rest of post truncated>

### Reply 4:
We can do this, split hashrate, in most any amounts, nice flat lines at the pools. Not sure if there are any other services to do this. Small US based corporation, if that matters. DM me

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24188,"Date: 2023-10
Topic: need advice to reduce noise and monitor asic miner
### Original post:
I think Awesomeminer supports this unit model but I don't know if it supports schedule/automation for this unit. Another problem is this tool needs a paid subscription so not worth using if you only have one unit.So only the FMS tool that I could recommend if you can't find other commands from the FMS tool there is a list of commands that I know check my post below also check the link for APIs you can maybe able to use them in your unit.- <link> note you still need to set up a VPN or SSH tunnel if you want to connect to your home network while you are outside I think TeamViewer is fine if you have an extra PC that you can run 24/7 in your home or only run it when you go outside.

### Reply 1:
any suggestions to build isolation box with tubes to put the heat outside homeand how to monitor my avalonminer 1166 pro to power on and off and configure fans speed when im outside home

### Reply 2:
More or less you are going to have to build something like this:<link> a bit of trial and error to figure out what works for your situation.Keep in mind unless your power costs are less then $0.07/kw you are going to be mining at a loss.As for remote monitoring and control, just get some form of remote software for a PC on the same network and do it that way.If you have a lot of miners there are better solutions, but for 1 it's not really worth it. IMO-Dave

### Reply 3:
There are some DIY guides to make a soundproof box on YouTube why not follow their guide like the one below or get some idea on how to make a soundproof box.- <link> about the tool to monitor and configure your miner's fan speed, you can use the FMS tool but the problem is there is no command to turn on and off a miner currently there is no tool that can able to do that. Only the reboot command exists on the FMS tool.About remoting a miner outside your home I think you will need to set up a VPN for this to be able to access it even if you are far from home.

### Reply 4:
Thank you for the suggestion! I appreciate your input. I'm interested in building something similar to those Box. thanks for design ideas if there tips based on your experience, I'd love to hear them.In my case, it's currently profitable for me to mine, so I'm looking to optimize my setup.Regarding remote software for monitoring and control, do you have any recommendations for software that allows me to control my ASIC miners? I've been using FMS, but I've encountered limitations with specific commands. I'm considering developing an automation script to schedule mining during high-performance hours and power off during the night. Any insights on which software might work best for this purpose would be greatly appreciated.Thanks again for your help!

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13764,"Date: 2022-04
Topic: HIVEOS Client firmware on S9k Antminers (?)
### Original post:
I know those are old miners, but nevertheless I'm trying to put my old S9k miners on my HIVE ""account"".The miners have signature-locked firmwares from the factory (Jul 28 2019) and they give me a""Installer Not Signtured!!!"" error when trying to flash the <truncated> firmware from Hive.Anyone know where to find an old SD roll-back firmware I could flash with the SD-card technique so I can finally go on with then flashing the HIVE client firmware?Failing that, is there a signed alternative firmware for the S9k that will let me at least have access to <truncated> in advance guys...

### Reply 1:
Try the SD card image from Bitmain you can find it here <link> do not know if it can disable signature check but try it first. If it doesn't work try the firmware provided from this link below- <link> flash it again with HiveOS. Let see if it will work.

### Reply 2:
Thank you for the reply!I'll try that today and post the results here ASAP

### Reply 3:
hi, the S9K have same system than lot of bitmain miners... so , i have the SD unlocker if you want , just use ""17 series unlocker"" on my website <link> use same methode than S17

### Reply 4:
would Your OS work on S9SE?

### Reply 5:
I think it will not work because the S9se have different control board if your purpose is to unlock it try to flash it with a k5 image recovery through an SD card. Check them here <link> you can start flashing it with different OS like HiveOS or Awesomeminer.

### Reply 6:
With very lot of respect, if i say process, i also check it and tested, so, ""17 series unlocker"" work perfectly with S9K / S9SE ... OF CORSE , after unlock you need install CORRECT firmware ! so , only good model ...

### Reply 7:
I am having No luck finding a custom firmware for S9SE anyone out there who can help please I know it's an older model I have currently 4 I just need a bit more control over the setting that the original firmware offers. The Major players like <truncated> don't have it.

### Reply 8:
Same here I can't find any custom or modified firmware you can only have more control of this model if you can enable or unlock SSH there are some few SSH commands from s9 that support s9se/k. Also, check this link below related to hidden settings for fan speed control and low power mode(LPM).- <link>

### Reply 9:
Thanks for your reply it doesn't work on my S9SE does it have to be a specific browser I am using Chrome I can access the page and see the code but it doesn't have the lines described in the thread like fan speed or LPM!

### Reply 10:
Ok then try the firmware from this link below- <link> sure to contact the author first if someone already tested it without any issue. The thread is related to s9k but according to the author the firmware works on s9se and I do not know if LPM will work on s9se but you can try.

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10868,"Date: 2020-02
Topic: Playing around with a whatsminer m10
### Original post:
I have a m10 with a dead board.4352.42kwatt hoursat 5:26 pmSo I will try to build a quiet m10 space heater.Numbers above show kwatts at 5:26 pmI set miner to low speed to make it quiet and the fans are at 1900 rpm so it passes quiet test.The center board was bad I removed it completely.It is doing about 13,800 ghor 13.8 thI will check power use in an hour at 6:26 pmthis still needs 240 volts which is easy for me to provide. I am feeding it 239 volts at the moment.I simply removed the center board completely an set gear to low.zero cost fast and easy to do I am hoping to get 60 watts a th for this unit on low.

### Reply 1:
spacer 4352.46 at 5:26 pm4352.86 at 5:56 pm doing 14075gh or 14.075th hour reading can be off by a bit.so .4 x 2 = 800 watts draw to do 14.075 th that is 800/14.075 = 56.838 watts a th not badso4352.46 5:264354.15 7:261.69 kwatts in 2 hoursor 845 watts an hour14.072 thso 845/ 14.072= 60.04 watts a th1 th earns 0.1475 cents a day so this making 2.07 a day to burns 21 kwatts which mean it is about break even at 9.9 cent power2 boards on low only mod is pull the dead center board.room is warm 85f

### Reply 2:
Not bad at all! Gives me some ideas for what to do with the one that likes to drop a board - same one every time and yes is the middle one as well - every now and then..

### Reply 3:
fans are under 3000 say 2000-2500 room is warm 86f5 hour read 0n mmpool4356.72 10:264352.46 5:264.26 kw or 852 watts an hourso 852/14.032 = 60.7 watts a ththis was on mmpool.org which is sometimes a lower hash then viabtc pool due to lack of asic boost on mmpool10:40 pm 56.85 set to viabtc was still tuning.will run on viabtc overnight.4365.98 kwatts at 9:18am 10 hours later4358.24 kwatts at 12:18am4357.40 kwatts at 11:18pm set to viabtc doing 14,239 which is higher then mmpool due to asic boost.that is 840 watts840/14.238 = 58.99 watts a th. one hour test.8.48 kwatts in 10 hoursso 848/14.080 = 60.27 watts per th about the same as mmpool numbers for 50 hours.room is 87f or 30.5c fans are 3500 and 3600 so some noise but not killer.This will be moving up to Clifton warehouse later today.Hey completely off topic , but 10k a coin by feb 1st! My Fingers are crossed and hoping for this.Edit: we topped 10k on Feb 8th So I guess I was close enough with my Feb 1 guess.I will now predict 11k by March 1

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24067,"Date: 2023-01
Topic: ebang ebit e12 44ths
### Original post:
I need new firmware for this e12 , very low hashrate and I think new firmware might sort it help would be very much appreciated Thanks

### Reply 1:
See the manufacturer website:<link>

### Reply 2:
please check frq 500-520

### Reply 3:
Can somebody please send me the Ebit E12 Firmware? I can not reach the chinese site Muhblaxl@gmail.com

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11082,"Date: 2022-01
Topic: BlokForge issue
### Original post:
Hi,We are having delivery issues with blokforge.com. Delayed order (months) and nothing but excuses.In the past they were a reliable provider of mining gear. We bought from them a few times with little/no problems.Just wanted to raise awareness as they may have serious issues and/or planning a rug pull?Please share if you are having similar issues.Cheers

### Reply 1:
Take a look at <link> got the miners but late. There were other similar stories on reddit, but I can't find them now, if you dig a bit I am sure they are someplace.But, it does not look like they are out and out scamming and running with the BTC, but sold stuff figuring it would be here 'soon' but due to everything going on in the world soon never happened.Keep bugging them, don't let up and keep posting about it. The more bad people see about them, the more they will (probably) want to fix the issues that are out there in public.-Dave

### Reply 2:
That is reassuring, thanks for posting!

### Reply 3:
I highly advise to exercise care/escrow if you still decide to buy from BlokForge.com. Our latest (listed in stock!) purchase is still not delivered after 3+ months. They haven't refunded the money yet (asked for refund weeks ago).

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23280,"Date: 2020-06
Topic: Antminer S9 ""Locate"" code
### Original post:
Trying to find the code/file that would allow me to flash the S9's green and/or red lights.. This would help me locate machines in my farm.Know multiple third party firmware's have this feature as does the S17's.Anyone out there know how to do this? Just need the file!

### Reply 1:
No, he wants to force flash the LEDs so you are able to physically ""locate"" a miner within a bunch of running miners.BraiinsOS has this in the UI and with the cli command miner fault_light on. Maybe he wants to do it with factory firmware...

### Reply 2:
You could use putty, log on to the miner and use the command ""poweroff"" - the miner will have a static led light, either green/red or non.

### Reply 3:
Okay set the miners to static lets say 192.168.1.10 to 192.168.1.110 that is 100 miners.do a scan it will show 100 miners. unplug a minerdo a scan it will show 99 miners. the one missing is say 192.168.1.40 write on the back and front with a sharpie 40do the next miner so on and so fortheventually all 100 miners will be numberedthen rearrange on your shelf spaceevery miner in a row. 192.168.1.10--- <truncated> until last <truncated> with advanced ip from 192.168.1.10-110 make sure view is set to dead only dead miners show up say 192.168.1.103 since you know where it is it is easy to check wires.simple system that works one time setup is slow but I prefer static addresses over moving ones.we have 63 btc minerswe have 25 ltc minersall static all easy to find

### Reply 4:
<truncated>

### Reply 5:
There are a few ways to set up. We have verizon and optimum.Let us say each router is set <truncated> they are different internets the router can be set to the same .10.we use 192.168.10.1-20 for non mining gear.we use 192.168.10.20-50 for s9'swe use 192.168.10.51-80 for l3+on and up the line to cover all the miners.each router is 8 ports 3 go to 48 port switches 3 go to spare etc cableslots of redundancy and room to expand.also the building has 24 hour activity with workers in the warehouse section. Our biggest issue is adding a new transformer to go from 200kwatts to 500kwattsIt is also a pain to check gear for up time but we do it often.just checked and it is all up!

### Reply 6:
Block it in the firewall so it lights flash or don't light up for network activity maybe?

### Reply 7:
Hmm this is not a bad idea, but i would do it slightly different. Rather than moving miners around (that is not trivial, lots of effort doing that) Use a netbook, (or the smallest portable thing you can find with a lan port), and simply connect direct to each miner. That netbook can be running Linux with he nic manually configured and a dhcp server assigning IPs in the same segment you intend. Ie: 192.168.1.200.That way you can walk in and connect directly to each one to set its manual IP without moving them at all. With manual IPs you don't have to worry about a dhcp server going nuts, especially when there is a power outage.Also the ""poweroff"" idea is good, but it needs physical intervention later Which is which? i also have 39, 47 and 51 in my miner here.

### Reply 8:
38 - green37 - redProbably should have mentioned you also need to send an echo command likeecho 1 > <truncated> I believe 39 is the beep.

### Reply 9:
I'm not 100% sure who to quote on this one, but the ip report button works wonders.For staticing(?), we use a custom device that connects and sets everything. Takes about 30-45 seconds a miner.For networking you don't need anything complicated, you can even do it dhcp just set the dhcp server up with static mapping. Basically you let them all come up on dhcp, leave them as dhcp and then grab the list of macs/ips and set it in your dhcp server. Then everything is still dhcp but the router/firewall know which ip's to give each one.Segregating your network is a very good idea, especially when a virus / malware hit. Only what is accessible can be infected. A lot of the big farms that got hit just didn't have a proper network setup.

### Reply 10:
yeah right now one router optimum has four or five miners.they stay there for three to four weeks.then move to verizon 96 to 100 miners.all have longer passwords. and i try to use only bitmain's virus resistant firmware.which means you need access to sdcard slot to change firmware.

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11104,"Date: 2022-02
Topic: Is Pangolin mines (https://pangolinmines.com/) a SCAM ?
### Original post:
Never heard of them or seen any review.For now I think it is more safe to assume that they are not legit

### Reply 1:
Thanks for your reply. I got suckered in through twitter recommendation from a rando I will try to lawyer up through some local firm and go at them that way, since I hope they have to have something legit in order to get Coinbase partnership.

### Reply 2:
Same here never heard of them and their domain is a few months old.Look at the <truncated> Inc.Registered <truncated> <truncated> <truncated> <truncated> was hosted on siteground and the other thing that I notice is that they do not have many backlinks so how did you exactly find them?For me, this website is scam they do not have much impression and it's not the official one or the verified distributor. That is why manufacturers always recommend only deal to any verified seller or distributor. I suggest you if you don't own this website to get strong backlinks here on the forum edit your post above and remove the <link> on that domain to make sure it won't link here on the forum. Because you are just helping them to rank up on Google SERP.

### Reply 3:
Hi,I think I got scammed big time Has anyone successfully purchased miners from Pangolin mines? pangolinmines.com? (NOT from the <link> the official distributor of Whatsminer.)I think I got scammed big time, because the UPS link they have provided is a spoofed UPS Qatar website They have Coinbase commerce account (that was the reason I even considered dealing with them), would it be possible to do anything with that in order to get the funds back? Cheers!

### Reply 4:
I got recommended it by a bloke on Twitter beneath one of Adam O's @denverbitcoin comments where I inquired about vendors (he even sent me his supposed receipts that he got from them, from purchasing, and even now is still playing the part). My own rationalization was that they are reselling used miners that have been generated by the ban in China, thus the new website. Yes, the lack of backlinks is alarming, but the greed got the best of me, as some S17 options looked too good (that is how they find the suckers )

### Reply 5:
Next time if you are going to buy a miner to an unknown website make sure to make a thread here on the forum.So that we can give you a few insights about the website if it is legit or not.The bloke on Twitter might be one of them or an affiliate?And I suggest you make a thread on Scam accusation section and include your evidence so that other people are aware of this scam/fake website.

### Reply 6:
Notice the domain name <truncated> is a scam site and a copycat of pangolinminer.com which is a legit site. So you got scammed, sorry about that.Here is a review thread about Pangolinminer.com by @Steamtyme --> Pangolinminer.com a MicroBT distributor and seller of Hard Goods

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16571,"Date: 2023-08
Topic: Bitcoin Merch Mars Lander Hardware-Error Rate
### Original post:
I have a question regarding my Bitcoin Merch Mars Lander which shows a lot of hardware errors during mining.The are some stats of my Mars Lander after mining for ""1day 23h 24m 13s"":Accepted: 26,016Rejected: 5Hardware Errors: 10,928That is a ~42% Hardware Error rate which I think is insanely high. It does mine at an average of 288 MH/s. So, just to be sure, I e-mailed Idan Abada from Bitcoin Merch and this is his reply:""Hardware errors are normal. I see 289 GH/s, the advertised hash rate is 250. You are doing wonderful!""When I said it's a 50% hardware error rate at that time, I got a reply back saying:""Yes as long as your hash rate is normal, yours is very high so very good!""So, my question is: is a 42% hardware rate accepted when mining at an average of 288MH/s? To me, it sounds like faulty hardware.

### Reply 1:
I think the hardware errors came from overheating did you overclocked the miner?Maybe the power supply is not giving enough power you might need to replace it.Or I suggest try to downclock your miner and let's see if it could reduce the hardware errors.

### Reply 2:
Cheers for answering. No, I did not overclock the miner and the power supply comes with the Mars Lander.By the look of your answer, it is not ok when the miner has a 42% hardware error rate? I don't understand the answer from the owner of Bitcoin Merch then.

### Reply 3:
For me, it is not ok if the miner reaches almost 50% of the hardware error but this issue can be solved and according to your hashrate for me, it looks fine.Sometimes this issue comes up on the first run and the miner needs to be warmed up first to get rid of this issue. So I suggest try to reboot the miner after warmup and now monitor the hardware error. If the issue is still there then downclock the miner.

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23102,"Date: 2019-10
Topic: Brand new antminer s9k not hashing
### Original post:
I've tried troubleshooting all day today and am just curious if anyone can help me figure this out. 2500w PSU into 220v transformer into 110v ac wall on 20A; theoretically should have enough power. Do I need a warranty repair already? I literally just received it today directly from bitmain. I was getting Socket connect failed: Connection refused in the ""overview - Hardware Version"" line earlier but it has seemed to disappear.Below is the kernel log. Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] <rest of post truncated>

### Reply 1:
The miner needs time to do its auto-tuning, that can be anywhere from several minutes and by some reports up to an hour. During tuning you get the ""Connection refused"" message and it goes away when tuning is done.How long are you waiting?Any whitespace at the end of your pool and/or user info? If so delete the space because it makes those entries invalid.

### Reply 2:
After just under 3 hours of runtime this is my kernel. Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203696K/245760K available (6345K kernel code, 231K rwdata, 1<rest of post truncated>

### Reply 3:
humor me and only power 1 hashboardand don't make nicehash your first pool try a pool like<link> pool <truncated> user ""use a btc address you control"" password xtry each hashboard 1 at a timeI see a temp error buried in there you may have 1 bad board.Maybe we can get 2 of them to work

### Reply 4:
it's screaming out loud dude.are you using some duct or anything blocking the air intake / exhaust ?This is my S9k's kernel shows when its done <truncated> 03:20:50 <truncated> chain[1] increase to 3852019-10-03 03:20:51 <truncated> max = 385 ,min = 3852019-10-03 03:20:51 <truncated> chain[1] increaseing the diff freq ...2019-10-03 03:20:51 <truncated> chain 1 final freq setting:The first thing I would check would be the fans.The S9k takes a lot longer than the other S9 versions (S9,S9i,S9j) but nothing more than 5 mins to start hashing, at least based on my experience.

### Reply 5:
okay, first I'm going to look into the fan, then try each hashboard individually and keep it running for a couple hours, and if I find one that seems bad, I'll report back with a kernel log from it after keeping it running for 1-2 hours if I can. I'll touch back either later tonight or earlyish tomorrow. Thank you both thus far.

### Reply 6:
That is a possibility, but what are the chances that the kernel log wouldn't throw any power related error? it is usually best to start troubleshooting the obvious errors before speculating, a very common issue is the fan grill , during shipping and handling the grill can bend a bit, pushes against the fan's motor and as a result of the fraction created by the grill - the fans don't spin fast enough.judging the kernel log, it is safe to assume that this is not a pool / internet related <truncated> 04:43:52.779] Pool 0 difficulty changed to 65536This line wouldn't show up if the miner couldn't connect to the pool , so let's wait and see if replacing the fan/s will fix this issue.It is safe to assume that if it does not start hashing in 30 mins, it will probably never start.

### Reply 7:
Great news, would be best if you could ex<rest of thread truncated>
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23933,"Date: 2022-05
Topic: How to underclock S17+
### Original post:
I want to reduce my S17+ wattage usage by around 800W for safety reasonsCan I do this without custom firmware, and if so, where are the settings?

### Reply 1:
There is a hidden setting that I think you can able to change the frequency but I don't know if you can reduce the wattage or undervolt the unit to reduce the power consumption. I search a bit it seems you can able to lower the voltage and frequency.Check the thread below. - <link>

### Reply 2:
indeed, this technique worked, but only on the very first model of the 17 series (old firmware), since the ""bug"" was very quickly corrected ... if necessary I propose a solution, to my knowledge the most economical

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23920,"Date: 2022-04
Topic: Antminer s9 not hashing noobie
### Original post:
Hello I bought a miner in December and it worked for about 1 month after that it just stopped working. I tried to solve the issue by researching and found no solution that fixed my problem. please help or let me know what's wrongCode:Booting Linux on physical CPU 0x0Initializing cgroup subsys cpusetLinux version <truncated> (lzq@armdev01) (gcc version 4.7.3 20121106 (prerelease) (crosstool-NG <truncated> - Linaro GCC 2012.11) ) #81 SMP Mon Apr 25 11:20:36 CST 2016CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=10c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine: Altera SOCFPGA, model: Altera SOCFPGA Cyclone VMemory policy: ECC disabled, Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat 806e5cc0, node_mem_map 8072a000 Normal zone: 2016 pages used for memmap Normal zone: 0 pages reserved Normal zone: 258048 pages, LIFO batch:31PERCPU: Embedded 8 pages/cpu @80f17000 s11200 r8192 d13376 u32768pcpu-alloc: s11200 r8192 d13376 u32768 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256032Kernel command line: mem=1008M <truncated> root=/dev/mtdblock3 rw rootfstype=jffs2PID hash table en<rest of post truncated>

### Reply 1:
Are you sure about the unit model is it an Antminer s9? Or a clone one?The kernel logs are a bit different compared to my Antminer s9 I don't know for the C5 controller but would you mind to try to flash it through the SD card?You can follow the guide from this link below- <link>

### Reply 2:
Its a antminer s9 11.85th

### Reply 3:
@bitmaxz every time I try to flash via website it says incorrect file. will it be different if I use sd card?

### Reply 4:
It will be incorrect file if you are trying to flash SD card image through browser.You need SD card and put all extracted file to SD card. Follow the guide from the link that I posted above.Or if your miner control board is c5 then you wont be able to flash it through SD card. Use the firmware with extension tar.gz that support c5 controller and upgrade it through browser.

### Reply 5:
I updated through web browser and the problem is the same. here's the new log

### Reply 6:
I can't see any issue on the logs or possible errors.Can you try to flash it again with different firmware available on bitmain(lower version) then try again.Also, check your router and maybe the firewall is blocking your miner from connecting to the pool.Also, try to mine on different pools to test. You can check other pools from here <link>

### Reply 7:
please disconnect chain 1 and power on miner without chain 1 maybe your problem solved.after all your chain 1 hashboard need to repaired and only find 62 asic, that must be 63 asic.

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10817,"Date: 2019-05
Topic: This is a reliability thread  may not keep it open long.
### Original post:
Didn't you mention you had an issue with your T2 a while back? Or was everything fine?

### Reply 1:
<truncated> yet to shipT2T-32Tthe gear above is the most efficient gear there is for sha 256.I am trying to determine if there is a reliability issue with them.I am aware that the T3 is yet to ship.All of the units come with a psu that you have to use. So I am trying to figure out if they break easily.

### Reply 2:
T2 was good.T1 not so good.

### Reply 3:
I have a Whatsminer M10s, a pair of Innosilicon T2T+ 32TH, and a pair of bitmain T15s currently under observation and testing to determine our next hardware purchase.The M10 and T2T have been running for nearly 2 months trouble free now. The bitmain unit only arrived recently but I have seen no issues with it as of yet.So far not even a hiccup other than having to factory reset the T15 out of the box.

### Reply 4:
You have the supersized m10 does 44th? or 54th?

### Reply 5:
The M10S is physically bigger than the M10 correct? With 4 boards instead of 3? 140mm fans instead of 120mm?

### Reply 6:
The M10S is pretty big, it does have 140mm cooling fans but only 3 hashing boards.The Innosilicon T2Ts are actually larger than the M10S and also come with 140mm fans.

### Reply 7:
IIRC it has 140mm fans.the m10 31th and the 33th have 120mm fans for sure. I have 4 of them at the moment. 2x 33th plus 2x 31thPretty sure I am getting a fifth one. 1x 31th

### Reply 8:
The T2T32T or all versions? I never to get to see these things thanks to mostly drop ships. Philip you expanding or taking s9's offline?

### Reply 9:
That sounds pretty sweet. Maybe well see some info on the T3 or another batch of m10s but for the price right now with decent power cost the m10 31T is a pretty sweet deal. From the S15/T15 thread sounds like batch one and two are a bit problematic? Might go do a quick peek at the support section here.

### Reply 10:
The pair of T15s I was able to get from batch 1 have no problems so far with 9 day uptimes. It not really enough timewise to go on, but so far these have been rock solid.

### Reply 11:
my t2t24 is bigger then my m10 31th or 44th not sure if fans are 140mmI go to new build out today and will bump from 30kwatts to 47kwattslet it run for 2 weeks do final bump to 58kwattsso 1 will need 11kwatts in some kind of gear I think it will be m10's 5 or 6 more no need to decide now.

### Reply 12:
That's good to know. Efficiency wise they're on par with the S15 in LPM from what I've been reading.

### Reply 13:
My T15 is still hashing away without issue. 23.3 TH/s at the pool, ~1540 watts.

### Reply 14:
I am seeing 20.6TH @ 1434w in LPM on T15 #1I am seeing 20.7TH @ 1403w in LPM on T15 #2

### Reply 15:
I'm seeing 21TH @ ~1310-1330w in LPM

### Reply 16:
So your t15's do very well what are your input volts?200208 220

### Reply 17:
FWIW the PDU I have mine on is reporting 210v at the outlet currently.

### Reply 18:
Panel says 208v but multimeter reading directly from the plug on the PDU says 200v.

### Reply 19:
We dont have a lot of info yet but it looks like the psu prefers under 210 volts vs over 235 volts.This could be a problem for USA SETUPS on 240 volts. As I type I am at 241 volts in my house.Anyone with numbers for t15 s15 including volts feel free to post.

### Reply 20:
Got 2x S15 / 28TH from January and February. Can't complain , no issues and hashing strong.

### Reply 21:
This is all very pointless unless you have hundreds of them.If 'one' of the two you buy fails and 100 someone else buys are all OK, it simply says you were unlucky - only one in that 102 failed.You'd need to find some large miner farm and ask them about failures otherwise it's completely meaningless.

### Reply 22:
I locked this. It seems we ended up with 2 s15 psu burnouts reported which is not a lot.Both were being subject to 243-246 as the high in volts and 240 is the max according to bitmain

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    ""hardware_name"": ""Whatsminer M10s"",
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    ""hardware_name"": ""T2T32T"",
    ""hardware_is_owned"": false
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t2t24"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S15"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S15 / 28TH"",
    ""hardware_is_owned"": true
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]"
24108,"Date: 2023-04
Topic: Need help for cooling a closed room
### Original post:
Hello,My situation is this: my rigs are in a closed rood with only two vents for AC coming in. AC is stuck at 20C/68F.The room is closed: no windows and no way for the air to get out.The room also cannot be modified, since it's not my house and the owner has refused any modifications I proposed.I can't move the rigs to another location. I need help/ideas in ways to cool the room.I have a one S17pro and three T17+ machinesThings I have tried but have not worked:fans with higher CFM/air pressurebig fans mounted right in front of the minersgiant stage fan to move the air around and cool all machines at onceconnected one of the AC ducts from the ceiling to the stage fan to suck/push more cold air in the room: didn't work.My last brain cell idea is to get a metallic rack and just put heatsinks on it and a fan to blast over them to cool the air since they aren't connected to anything, as in they're not generating heat.That's about all I could think of and I'm out of ideas. Could someone please help me with this?

### Reply 1:
Difficult question, because I think you have already tried everything that is really feasible in your situation. In any case, when there are large amounts of energy used, there will be a lot of heat in the room if it is closed.I think that indeed air conditioning the room could be the beginning of a solution, but it depends of the surface of your room. What is the floor area and total volume of the room in question? With this data, calculations could be made.In my humble opinion, there are two solutions realistically available to you:-Hydrocooling if you can, but I don't know if that would be feasible / cost effective with S17s and T17s. In theory everything is feasible but the financial aspect of this solution will probably lead to a financial loss for you-Hosted mining, send your ASICs to someone who has better operating conditions than you have.Apart from that, I don't think there is a miracle solution for this problem.

### Reply 2:
The room is 10square meters / 110square feet, not very large.I understand. Water cooling might be my only option and buying the kit myself, piece by piece.Thank you for your help and for your time, it really helped

### Reply 3:
Not going to work in your room unless you place the radiator outside, water simply moves heat faster than air, it doesn't magically get rid of that heat, if you can't modify the room by any shape or form, you will need to get a stronger AC, calculate your that total Watts and multiply them by 3.5 and that's the size of AC in BTU you are going to need to cool the room.Cooling in theory is rather simple, it's either you move enough air to offset the CFM needed by each miner and that's done by installing enough exhaust fans and having enough intake space, or by sending the hot air outside using AC for air cooling miners a radiator for immersion cooling and/or water cooling, they all are based on the same logic, it's just the efficiency and cost that matters.For now, try underclocking your miners to the lowest settings possible till you have figured out something.

### Reply 4:
Thank you for the details and explanations, I will take this into account into the future.For now, underclocking it is

### Reply 5:
Yep lower watts = under clock = cooler.

### Reply 6:
Leave the door open?The obvious solution would be to convert one of the two aircon inlets into an outlet. Might be very easy if you are handy, or a complete disaster if it goes wrong.But as others wrote already, you need to let the heat out, somehow. How about a few extra washers placed on the door hinges to lift it off the floor to create a leak? What is above the room?

### Reply 7:
What you can do is convert your your miners to watercooling and easily put out the heat out of the room if you put a hose through the AC hole. Outside of the room you can put a radiator and have no heat at all in the room. This is very expensive however.Second option is to use one AC hole as an inlet for air and one as an output for air. To those holes you connect fans with a very strong pressure and see how far this will get you.

### Reply 8:
If you have a quality wood door.Say like this:<link> access to a proper circular saw like this :<link> could remove to maybe inches from bottom of the door.Good luck fixing the heating issues.

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    ""hardware_name"": ""stronger AC"",
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23259,"Date: 2020-04
Topic: inrush current
### Original post:
Hey guys,I use regular 10A 5x20 fuses to secure my miners on the socket. Never had any problems with the S9's but the S15 and S17 models keep blowing from time to time.. Which is weird because the difference in power between the S9 and S15 is not that big.So i was thinking it might be the inrush current of the power supply's. Does anyone have any figures on how big these can be? And do they also occur when the miner reboots?thanks a lot,Lars

### Reply 1:
Will that Whatmeter read the inrush current? I can't tell for sure but I highly doubt it.I think the inrush current for the old power supplies like the APW3 and APW7 is <= 80 amps, it's safe to assume that it's a lot higher on the S17, however, the inrush current is so fast for most fuses/breakers to act upon, if inrush current was the issue then S9 would have caused the same issue, the problem here seems to be the 10A fuse itself, you are passing it a lot, the S17 consumes about 2100w so on a 220v it draws 9.5A, the slightest drop in voltage will take it above 10A, you need 9.5*1.35 = 12A or nearest to safely run an S17, for the S15 it does about 7.5A so I think a 10A will do the job as long as the voltage doesn't drop below 220v, if it does, it will blow, you need to measure your voltage and get the lowest number and judge based on that.

### Reply 2:
Much better monitor the current power from the beginning until the miner is running.Do you have a wattmeter plug?It looks like this belowIf you have that you can monitor why the fuse keeps blowing. Or your fuse is not actually 10A?What I heard from others is that they use 15Amp fuse but if they use lower than that he always replace it with a new working fuse.

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22857,"Date: 2019-01
Topic: [Antminer S9] Miner stops hashing - all stats freeze except LSTime
### Original post:
Hello all,I've come across a widespread issue in a farm today that I could use your help with.It started when I received notice that a large number of miners (all of them Antminer S9 base model - mostly 13.5th) appeared to be hashing fine when looking at web miner status or miner API, but on the pool API it showed no hashrate for these miners (no shares being submitted). When I look at these miners through either the status page or API, they appear to be hashing, but all of the stats are frozen. For example, the ""elapsed"" time does not increase, realtime hashrate does not change, nothing. Kernel log does not change and no error messages are present.The eerie thing is that LSTime (last share time) still increases as normal. And it also looks like fan_num is always 0, and all fan speeds are zero.When I reboot the miners, everything comes back up normally. Stats stay updated, fan speeds show up, shares get submitted (confirmed by pool). So what I am planning to do is make a script that checks all of the APIs so that e.g. if hashrate > 1th but last share time > 10min then reboot the miner.The thing is that I have no clue why this is happening, and what might cause it to reoccur. Any th<rest of post truncated>

### Reply 1:
For me this issue is 100% related to the ASICboost firmware. It was never an issue before the patches. As a matter of fact, the second ASICboost patch was a fix for the stalling found in the original release.We have yet to figure out a way to keep them running so we are developing something that can read the LST and reboot as needed as all of the API info freezes at the point it stops mining while still reporting those final functional values as current even when they are not.

### Reply 2:
Looks like I was mistaken again. So I got some high-level stats and here is what I found:Farm Summary6.1% of miners had a Last Share time of greater than 1 day, evenly distributed from 1-32 days99.4% of affected miners were ASICBoosted S9, other 0.6% were ASICBoosted S9i. So the issue is definitely related to ASICBoost firmware.Weird thing42.3% of affected miners had LST greater than 7 days. Out of these miners, 99.7% had a (frozen stat) hashrate greater than 11 TH/s.For the affected miners with LST less than 7 days, only 11.1% of these miners had a (frozen stat) hashrate greater than 11 TH/s. 88.5% of them had one bad hashboard and thus reported between 8-11 TH/s.

### Reply 3:
... use original oem firmware ...

### Reply 4:
No - wipe them, put back the original firmware, update them to asicboost and then they should be OK.Clearly there was something wrong with the firmware on them when you got them ...

### Reply 5:
I have the same issue trying to figure out which are asicboost and which arent. Sometimes the firmware date changes to the Nov 2 date of the ASICboost patch, and sometimes it retains the underlying firmwares date so you actually have to login and look for the LPM checkbox.The real pain with this issue is the fact that the API and everything else still reports the machine as hashing so if you dont happen to notice in your dashboard that the hashrate is always identical, it can take a while to realize whats happening with the last submission issue.From my data I have not had any correlation between machine states (aka bad board, etc) and the fact that it stops submitting data. The VAST majority of my machines are in perfect working order and all exhibit the same symptoms.

### Reply 6:
Are you sure about the date thing? Sounds like the firmwares might have been flashed incompletely or something. All of my asicboosted miners all have Nov 2018 file dates. None of my non-asicboost have the LPM checkbox either.I wish I could say the same about these machines here. It turns out that was a red herring anyway as these machines here were apparently flashed with asicboost in order of descending hashrate (roughly).The asicboost ""firmware"" is straight from Bitmain. Besides, nowadays using non-asicboost firmware with the S9 is pointless and often unprofitable.

### Reply 7:
I tried that; some of the miners were used and had an older Sept '17 firmware before putting the asicboost files on. I reflashed the whole filesystem to Nov 2017 autofreq (which fixed the issue) and then flashed the asicboost again (which caused the issue to reoccur).It seems like it will freeze up at a consistent time on each individual miner, but the time that it freezes up varies between miners.Also there are a lot of miners that were new and have only ever had the Nov 2017 autofreq firmware and they also present the same symptoms after being boosted.

### Reply 8:
I can say with certainty that this issue is power supply agnostic. I have 6000+ non Bitmain PSUs powering S9s and T9s and the issue happened with them as well.

### Reply 9:
So I see that this bug is exclusively with bitmain's LPM and enhanced LPM firmwares. I wonder <rest of thread truncated>
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23993,"Date: 2022-07
Topic:  dspic33ep16gs202.c:64:volt_clamp: failed on Chain[2], b[0] = 254, b[2] = 254!
### Original post:
Please learn how to put all kernel logs into an insert code tag sample like thisCode:All my kernel logs hereIf you can't able to or has character limitation you can use pastebin.com and paste the URL hereAnd this is not the right place to post this it should be in the mining supportAbout your problem, would you mind to try to flash it first with the latest firmware available from Bitmain hereI also suggest you try to run the unit and test hashboards one by one. The error that I notice is the temp <truncated> 21:43:26 <truncated> chain[0] temp info,Bad. Reload from eeprom..That is why I do recommend you to try to test them one by one.

### Reply 1:
Did you try changing the firmware? In your kernel log, all 3 boards show no temperature information found. Please swipe the SD card program to restore the control board, and replace a power supply and testing.

","[
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  {
    ""hardware_name"": ""SD card"",
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    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
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]"
23852,"Date: 2022-01
Topic: Lost 16 psu's in one night Innosilicon T3+
### Original post:
So was looking to see if anyone has ever had any problems with Inno T3+'s ? Been mining for a very long time and never had a prob with hardware like this. Running this stuff for about a week and then boom, lost 16 in one night. Popped the breaker on my pdu's. Pulled it off the rack and plugged one in and a big spark out the back of the psu. Running them at 208v and 60hz. Looks like specs are 210-240v. Also, last night was a humid night but not 90% or higher. The psu's are potted and I have a very steady volume of air moving across all my machines all the time. Any ideas on this,anyone ever had problems with these. They are a used lot, but ran fine for a week or so. Any ideas would be appreciated.

### Reply 1:
Sounds like you have a unstable grid.208 VAC is already too low as you said,and maybe you had a ""brown out"" and there was a huge mains voltage drop which caused trouble for the psu input circuit.

### Reply 2:
Thank you , I will check into it and see what we find. Never happened before

### Reply 3:
It was the warm day we had yesterday then rain and 91% humidity. The only PSU's that died were the ones closest to the air intake.I opened a couple of the PSU's and found condensation.

### Reply 4:
Also popped the transistors.

### Reply 5:
Whoah, that's soaking wet @smracerAre you the same guy as OP? Or different guy who had similar incident?

### Reply 6:
We mine together. I am local at the mine. He is on a beach, earning interest. Luckily, PSU's are cheap compared to the miners. The miners all all fine.

### Reply 7:
Okay. In the end it seems like a short circuit damage because of the water.I don't know your air intake structure, but maybe it could be modified a bit to prevent such damage happening again?

### Reply 8:
It looks like a MOSFET, not a transistor check the name value and search for a datasheet or diagram to check if the gate has some resistance coming, make sure the blew MOSFET are removed, and check it directly on the board if it has shorted on the gate then the PSU is shorted. If you are lucky and it doesn't have shorted on the gate then you can just replace them. If you can't find a datasheet for that parts you can use known working PSUs to compare them.

### Reply 9:
I can't speak for these ino PSUs, but my Whatsminer M21s and M20s and Antmienr S9s work pretty fine at your said voltage, however, I had a similar issue when the humidity levels were not controlled in my farm, I lost a dozen PSUs and hash boards in one night, hopefully, yours is just PSUs.What I do now is point some of the miners' exhaust to the cold side of the split room to keep the temperature high enough, and I have a few of these > <link> to watch the humidity and temp from home, it also gives you a nice chart showing humidity temp recorded in the past so you know if your farm needs adjustment.Another important factor to control humidity would be the room pressure, make sure it's controlled as it makes things a lot worse.

### Reply 10:
The T in MOSFET stands for Transistor

### Reply 11:
Yeah but if you only said it's a transistor they are too different in terms of function.

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10799,"Date: 2019-02
Topic: Innosilicon T2T 26T
### Original post:
<link> sure what's happening in their camp right now with a product like this.

### Reply 1:
What do you mean?Bitmain batches on their sha miners always varies in speed by batch, these machines are probably using poorly binned chips that were rejected for the higher speed miners

### Reply 2:
The variance of spec given from the 25T falls within this range. Just poor campaigning for offering something ""new"" I suppose is what I'm disappointed in. Looks like their site is broken anyway. T3 shows 1050USD but asks over 0.2 BTCNever been a fan multiple batches so close in spec regardless of maker.

### Reply 3:
never really liked INNO, their website is terrible to begin with ,i find bitmain with all the flaws and greed to be more professional.

### Reply 4:
to actually buy and get the gear bitmain is pretty good.

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10828,"Date: 2019-07
Topic: GekkoScience 2Pac BM1384 Stickminer Official Support Thread
### Original post:
ck has released a new version of cgminer this week, does this build include the latest code or the version prior?

### Reply 1:
Yes, it includes all the latest updates from ck's <truncated> some related to system libusb that has sent my windows build example back to the drawing board. The entry page to my repository should say ""This branch is N commits ahead of ckolivas:master. "".If it's ever ""commits behind"" just let me know.

### Reply 2:
It's not often that ck releases version bumps like he did this week. Even though he adds commits regularly.

### Reply 3:
Love the fact that this build reports HW for each individual stick.

### Reply 4:
Just to clarify. The new cgminer incorporates the compac like the novak ""gekko"" version used too but there isn't support yet for the 2pac until vh has finished?

### Reply 5:
That's correct.vh's clarification on Official cgminer 4.10.0 release: <link> 4.10.0 from vh's github does support 2pac.

### Reply 6:
I will be getting this built and running tonight when I get home from work.

### Reply 7:
Excellent!Might I suggest adding a note for Raspberry Pi users that is is EXTREMELY HIGHLY suggested to use a powered hub and not the Pi's USB ports directly.... They have trouble even supplying enough current to a portable USB self-powered HDD... let alone a stickminer =) I don't want to see people with unnecessary troubles related to this =)

### Reply 8:
I don't know if it's in there yet, but yesterday I talked to VH about adding frequency support below 100MHz. I tested my stick at 3.8W at 100MHz, so about 75MHz and below should run on a 2.5W port. It is still definitely recommended to use a good powered hub, especially if you want to push higher frequencies.

### Reply 9:
On your stick I think I used different resistors that'll go to a bit lower voltage than the release model, probably 600mV flat instead of 630. I had trouble getting sticks to initialize stably in that low range so I decided to nix it.I'll run my test stick at those underclock numbers tomorrow and add to the efficiency chart.

### Reply 10:
Windows build instructions has been added:<link>

### Reply 11:
Yes, the lower frequency options is available in the current build via git.Both the compac and 2Pac appears to be responding to it. Bleeding edge right I can't argue that a powered hub is definitely the long term way to go.The Pi3B might be a good starting device to use with the 2Pac. <link> feed it a 2.5A power source, and it has a 1.2A current limiter out to the usb ports.That give the stick up to 6W of power to work with. In the photo above, I have a 2.1A battery pack hooked up, drawing 3.88W @ 100MHz.New numbers while connected to the Pi3B:adjusting the potentiometer knob as low as it can go (not sure what that translates to on my stick prototype)Mining, no hwerror @ 75MHz = 2.7WMining, no hwerror @ 50Mhz = 1.9W

### Reply 12:
Why is this so hard to build?Not complaining but asking.If I go to ck his just zips open and I can run cgminer.I will play with it in a bit.Eyes are still too blurry I will wait a bit.

### Reply 13:
<link>

### Reply 14:
thank you. I have ck's 4.10 build working with the compac.I should be able to get yours going with the TwoPac thanks again.

### Reply 15:
I have mine setup and running on a fresh install of Ubuntu 16.04.1 LTS. Thanks vh!Just a little thing, but you missed the step about installing git in the instructions, not a big one, but you could easily add it in the line where you are installing everything else.Thanks again.

### Reply 16:
I built it on an older Debian fresh install, needed libncurses5-dev and libusb-1.0-0-dev to compile and work properly.

### Reply 17:
Added. Thanks for spotting that.

### Reply 18:
I have it running in windows 7 with a compac and a twopac.I wrote multiple start bats.I have this as a working batbut it gives stock freq as it should since no attempt was made to change stock of 150 for 1 chip and stock of 100 for 2 chipthis bat crashes I tried to add freq 200 it was first shot but what must be done for correct setting of 200

### Reply 19:
<truncated> 200 --gekko-2pac-freq 150Instead of:--compac-freq

### Reply 20:
Yeah, that's in the Q&A section in the first post.

### Reply 21:
DUH I spent 40 minutes reading every read me on the download and did not look at the first post here.

### Reply 22:
here is Phil's original pic, with some lettering by @murasame2003 and myself. It might help some newbs as to where to measure voltage and where to adjust it:

### Reply 23:
Note my volt adjustment was just like the one in the photo.Let's say an. X. So that was good for freq 100. And it sucked for freq 200So. I moved it to +. That would be. From 1030 to 1200 On a clockOf 1/8 of a circle that very small adjustment allows for solid running on my stud hub with a bridge.I now have it at freq 200.The hub photo is on the review thread.The point is do not turn the<rest of thread truncated>
","[
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    ""hardware_name"": ""GekkoScience 2Pac BM1384 Stickminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Windows"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Ubuntu 16.04.1 LTS"",
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    ""hardware_name"": ""Debian"",
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  },
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    ""hardware_name"": ""Windows 7"",
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11279,"Date: 2023-04
Topic: 50% off for antminer s19 XP by bitmain
### Original post:
Fantastic deal but it looks complicated! <link> nice price for an efficient machine like the XPDiscuss!

### Reply 1:
Actually, it's really hard for you to buy in the price of 50% off, caz bots work now instead of human beings.

### Reply 2:
Link redirects to login page, it doesn't allow me to read the thing, lol. Expect nothing more.

### Reply 3:
I am trying to figure out the whole process. I have logged in as I am a past customer and got the detailsThey really do not understand how to communicate in the english language and the details, though appear to be spelled out, do not really convey what the heck is really <truncated> what is the ""Every 1000T can redeem 1 Pizza NFT"" - or other detail as described in step 3I have emailed for clarification with no response. I wish I knew a better way to paste the page, but here are the detailed instructions from Bitmain (when a customer signs in to purchase, which I have not yet)Step 1Reserve Your ApplicationMarch 22, 10AM - April 4, 8AM (US Eastern Time)Flash Sale Deposit: 24U/THashrate fee: 23U/TRegistration fee: 1U/TNumber of Reservations (T) : 140Flash Sale Deposit: 3220 USDRegistration fee: 140 USDTotal Amount: 3360 USDActivity Rules:After successful completion of registration and payment, you need to make your purchase on April 4 at 10AM(US Eastern Time) in 24 hours.If the transaction is successful, the 1U/T registration fee will be refunded in ANTMINER coupons to your account,and the 23U/T hashrate fee will be applied to the purchase of miners.If the purchase is unsuccessful, t<rest of post truncated>

### Reply 4:
You need an account to read the deal. You need to sign in to see the deal.The deal is so fucking complicated only a moron would do it.As I said they still owe me a 30% off coupon from a 2000 dollar purchase.That deal had so much fine print and they said fuck off to me.I have purchased over 250000 in gear from them and I have sent more than 1,000,000 in other purchases to them.And they fucked me the coupon. I will not buy directly from them unless they fix what they did.It is a principle thing for me.I recommend no one buying from them directly as they have been terrible the last two years.

### Reply 5:
Even more fucked is the NFT part.Promoting putting garbage in blockchains is just ridiculous.

### Reply 6:
There is an extensive debate on the NFT subject, people have mixed views on the subject, but to Bitmain, the deal is simple, more data on the blockchain = more fees per block, so they make more money by 1- Keeping the block fees on their PPLNS Antpool. 2- Selling their gears for a higher price since now the gears make more BTC.Ya, that stuff could be bad for Bitcoin in the long term, but as far as the short-term gains are concerned, Bitmain would love to flood the blockchain with all things.

### Reply 7:
looks like another nonsense post who buys this equipment? everyone hates bitmain according to almost every post so why do people continue to purchase it? no way in hell some rando company makes the best miners. i dont buy it bitmain is ibm, intel, nvidia, amd or all of the above. its so gross the amount of shilling that goes on and this is the forum that is the leading force for bitcoin? looooooli guess crypto is a dummy check the world does not need bitcoin if this is the standards. this forum is trash.

### Reply 8:
so happy for you to post.as I said I do not buy from bitmain directly anymore.My last four units purchased were whatsminer m30 and m50have a nice day

### Reply 9:
NFT's are an attack and an expliot.They dramatically reduce the number of transactions confirmed per block.They increase the number of unconfirmed transactions, which has been high for quite a while.Currently, there's about 10 non-NFT blocks of outstanding transactions, or 46 NFT blocks of outstanding transactions.Not sure how anyone could call that anything but bad for BTC.

### Reply 10:
Well, we don't care about altcoins do we? Problem is spamming Bitcoin and devs doing nothing about it.The excuse that mining must be kept alive at ""any"" cost, can only come from people who don't care about Bitcoin and only want to make the most money out of it and leave when it clogs perhaps having some altcoin they secretly push ready to take its place...And Bitmain stopped being a Bitcoin company the moment they manufactured ASICs for other algorithms, or tried forking Bitcoin.

### Reply 11:
Bitmain is $$ per watt coin. No more no less.And BTC has a real issue long term.Not enough rewards for miners means miners will leave the coin and mine a better algo.Scrypt is better for miners in the long run. maybe Satoshi wanted a electrical power to coin payment system.He built it. It kind of works.But i would argue scrypt has more staying power than btc.I will be dead before that plays out. say 2060 I could be wrong but I think at 103 I will be gone and m8ners will favor scrypt over sha 256

### Reply 12:
Why <rest of thread truncated>
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    ""hardware_name"": ""Whatsminer M30"",
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    ""hardware_name"": ""Whatsminer M50"",
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11123,"Date: 2022-03
Topic: ASIC miner repair
### Original post:
Whats the checklist and steps when troubleshooting ASIC miners that need repair?

",[]
23040,"Date: 2019-08
Topic: Asic chip
### Original post:
So i replace to a new asic chip for s9 hashboard but the shellx 5 app show that its still have the same problem from the chainE.g - Check chain: asicNum = 16So i replace the 17th chip but it still shows the same text

### Reply 1:
Answer these questions below.Are you sure that you place the chip in the correct position?Did you check the resistance of the chip with a multimeter?Did you set the heat gun or hot air to the correct temperature?Because if you fail one of this the result will be the same. The chip might be dead due to high temp too much hot air will damage the chip.Anyway, Look at this video to get some idea on how they check the resistance of every ASIC chip and find the correct chip based on the logs and the correct temp for air flow.--> <link>

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    ""hardware_name"": ""multimeter"",
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    ""hardware_name"": ""heat gun"",
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    ""hardware_name"": ""hot air"",
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23877,"Date: 2022-02
Topic: Bitmain Hong kong repair service experiences
### Original post:
Hello,I am making this post to share my experience with Bitmain after-sales service.To start, I bought an S17 pro 56th on 11/30/2019 from the Bitmain site.The 01/11/2021 a card stopped working and I made a ticket on the Bitmain website.I send my hashboard for around 90 to Bitmain. They charge me $35 with bank tax to fix it. The 11/22/201 I received a dirty and low hashrate hashboard from them. I make a screenshot to see the difference between the hashrate before and after repair :<link> have sent many emails to Bitmain explaining the problem, but the best they can do is to offer me a coupon for the shipping cost to send it back again for repair.I chose to keep the hashboard because I didn't want to waste my time with them anymore.2 months after the same dirty and low hashrate hashboard stops working. I sent emails to explain the situation to Bitmain but this time they cannot offer me a coupon and ask me to pay 90 for shipping and another 35$ for the repair.Right now, I am waiting to receive another repair hash from Bitmain. I'm really worry about the condition of the card I will receive.I hope this article can help people to use other service than Bitmain. I would like to know your<rest of post truncated>

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16045,"Date: 2020-03
Topic: US Tariff Ruling N297495 = 2.6% mandatory tariff on bitcoin mining hardware
### Original post:
<link> US Customs ruling for Bitcoin miners seems half-baked. They treat mining as though it is not a type of data-processing. This HS code classification means that US based miners will have to pay a 2.6% tariff on any miners coming into the US from now on. Period. Anyone know of anyone who is working to fight this? I'd love to connect.

### Reply 1:
To quote directly from the Ruling, Based on those guidelines and the fact that an ASIC cannot be reprogrammed - and the plethora of ASIC's in them are the heart of the miners in question - I completely agree with the CBP ruling.

### Reply 2:
I wrote a paper for my company on this when they asked me to attempt to clarify the ruling. However, as was pointed out, by the letter of what they say there is no room to argue. ASICs are not freely programmable.

### Reply 3:
2.6% is more than welcome since August.

### Reply 4:
I don't see how your attorneys could argue against it.. GPU rigs, sure they should fall under the exemptions as they are freely <truncated> miners however are much like a cash register or hand-held/desktop calculator. Yes modern ones offer high flexibility in addressing their core functions but in the end they are fixed-purpose data devices and both are charged import duty.

### Reply 5:
more references. <link>

### Reply 6:
This is exactly what happened to us. We received a mid 6 figure bill for things we imported before any of this was even a law.

### Reply 7:
Its all so screwed up. I recently purchased 4 z9 minis from bitmain and paid $37 in customs fees.My coworker purchased 2 z9 minis and UPS charged him a $506 customs fee.Both out of the same batch and delivered within days of each other.

### Reply 8:
Yours without PSUs?His with PSUs?Without PSUs = a Component = 2.6%WIth PSUs = a complete unit and a different classification and a 20% fee?

### Reply 9:
Our attorneys are full force on this. Not fun times.

### Reply 10:
Seems our top broker is looking pretty deep into this too. I'll DM you if there's any news I can share.

### Reply 11:
Ah my main man donald breathing life back into gpu mining.Also note that this is from Chinese gear not Japanese gear.<link> GMO gets a boostAs does Triple-1both Japanese based.

### Reply 12:
Its not arguing the classification, that is the correct one. It is the filing and pressure of the exclusion to the 25%.

### Reply 13:
The 25% one is really tough. But europe has been doing Vat at 17 to 21% for years.Bottom line it will be interesting to see how it plays out.I think China blinks then does some concessions to US and tariff ends in under 6 months.For your business it is difficult. It leaves you with only GMO and and Triple-1 to source asic miners.

### Reply 14:
Not exactly from now on. I just got served a notice of action today for miners I imported in November of 2017 that the now clarified classification will retroactively be applied to all of my imports and this could result in additional fees due.Since the miners were more costly then the 2.6% is a going to be a lot more per miner.

### Reply 15:
Now THAT is something I would fight in court!I do not see any way that CBP can be justified in retroactively charging additional duty from that far back. There is no way an importer could be aware of them not being charged the correct fee because this ruling only came down last June. If CBP has a problem with the new duty fees vs the old ones - that is their problem.While I am not a lawyer to me it would be the same as retroactively changing (increasing) the punishment for crimes -- that is definitely not allowed.Do you think for 1 minute that they will try the same thing and go after companies because Tariffs got raised/enacted? Oh yeah, the automakers, steel users, etc would just LOVE that...

### Reply 16:
Well it appears to me that the new clarification of the classification of the miners is what is causing the additional import fees. Even before the new 4/26/2018 to 12/31/2050 for 85437099 clasification, the old one from 7/1/2016 to 4/25/2018 under this 85437099 classification the import duties were the 2.6%Its that now they are starting to understand what this equipment is and reclassifying it retroactively on new understandings.-M

### Reply 17:
No PSUs for either of us. Nothing at all different other than carrier.

### Reply 18:
So after thinking about this, would you consider the xilinx zynq chip to be programmable?

### Reply 19:
Sure, in the sense that you can write shell scripts, install software, serve webpages, etc.But it would be impractical to use an antminer for anything besides mining.

### Reply 20:
That is all very true however all large orders are going through import/export brokers or damn well should be for this very reason. It is the responsibility of a brokerage to ensure all applicable codes and fees are correct. When FedEx/UPS/DHL/etc tack on broker fees that is the<rest of thread truncated>
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24053,"Date: 2022-12
Topic: S9 tmp451 error i2c
### Original post:
Hi everyone, I'm on a s9 13th and a card shows me signs of a hashrate drop after 5 minutes of mining (OS braiins ). I look at the logs everything is top, starts correctly the only concern being this line which appears before the fall of hashrate:Code: <truncated> ERROR <truncated> Sensor <truncated> read failed: I2C error: general error Hashchip: no response for <truncated> from chip One(61)I then looked more closely with a magnifying glass by desoldering the heat sinks, it seems okay to me on tmp541 chip, no dust, the welds are not cracked a friend told me that as for the s17 the welds crack over time and make false contacts.<link> noticed that on the hashboard when the sensor goes wrong, the little red light flashes more slowly like a bad contact (if it helps I say so)also in the line of code I saw write Chip 61, so I decided to test the chip as well as its surroundings and I came across the correct values of CLK: 0.9 and RI 1.8 in 12v plug.from what I understood it is, the more its heating (so after 5min to heat up) the closer we get to a crash point because of the sensor (or other)for the moment I am there without too much additional info an idea maybe?Big Thanks

### Reply 1:
It might be capacitors near the temp sensor would you mind trying it to check if shorted or not? You can also find the shorted part by touching those capacitors while the miner is set to sleep mode.Or if not you don't have another choice but to replace the broken temp sensor or bypass the temp sensor scan but the problem if you bypass the temp sensor it may damage other components.

### Reply 2:
Hello BitMaxz,You are right ! I test all capacitors and this one (2R5TPE) close to chip 61 show me 0v in output :<link> I tested the resistance of the capacitor in question, it is good. I think of a short circuit on the whole track 21 with the chips 60 61 62.Also, I put a video attached of the red diode that flashes once the sensor is triggered (a new hashboard starts to make the same worry of sensor tmp451).The previous owner confessed to me that he overheated without a fan (which he forgot to plug in again) before disconnecting it (like 5 minutes)<link>

### Reply 3:
That is not the capacitors that im talking about the ceramic one brown color it looks like this below.So the previous owner did broke the hashboard by leaving it without a fan that can cause burn parts.Also check the guides here <link>

### Reply 4:
Hello again,Sorry for the delay in answering, I was busy.I tested all these capacitors and they output the right voltage. I tried all the chips and they are working (RI 1.8 and CLK 0.9) I can't find any burnt trace. I really don't understand where this is coming from.

### Reply 5:
I'm talking about the resistance of those capacitors near the temp sensor voltage output is different.Would you mind to reflash your unit to stock firmware and letting it run for a while and copy the kernel logs and post it here?If you don't have knowledge about repairing this I suggest try to contact zeusbtc and maybe they can help you with your issue

### Reply 6:
I sent the card in question to a friend so I don't have any logs, but I update as soon as I have a new error (I have the same one on another card)Also on another card, I have all the chips in CLK at 0.9 but the RI signal breaks level 26 25 24. And is at 0 until chip 00.I tested the LDO, they are well at 1.8v and functional. The capacitor 330u 2.5v also functional.Where can this come from according to you ?On this picture you have in grreen area CLK0.9 & RI 1.8 and in RED CLK 0.9 and RI at 0v<link>

### Reply 7:
Sorry but it's hard to troubleshoot without the hashboard on hand.And those signals you talking about are for ASIC chip not for sensor temp.And also, I just want to you to try, and maybe it's only a software issue like I said above try to flash the unit with stock firmware from Bitmain and then try to flash the hashboard with a hex file that came from working hashboard.If you don't know how to flash the hashboard check this link below.- <link> what I'd like you to check is the temp sensor checking them visually is not enough you need a working temp sensor if you have extra hashboard you can desolder the temp sensor to replace them. This is the way how I repair replacing the sensor with a known working one is my way to test them as according to your logs it's pointing to your temp sensor.Please read figure 19 for the schematic and how to check them I already post the zeusbtc link above.

### Reply 8:
I understand, not easy without the PCB boardThanks anyway, I tested all the components (fig 19) they are all ok. I have to buy the pick3 to flash in HEX, I don't have this item yet !And if ever I would do a replacement of the sensor !

### Reply 9:
On the S9 hash board, when the RI signal crosses the voltage domain, it needs to pass through the resistor before being transmitted to the test point and then to the chip. Have you che<rest of thread truncated>
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16280,"Date: 2022-06
Topic: Notes from my journey to Beijing & visiting Canaan Creative in March 10-15, 2018
### Original post:
I am glad to see the trip worked well for you.My partner buysolar will be making the trip for training.Both of us will be doing USA support if all works out.I look forward to this trip that Sky (buysolar) takes and look forward to a new step into the cryptoworld as a support rep/trainer for Canaan.Buysolar is due to do trip in early April and I will also be posting here with his impressions.I am hoping Steve would send us some spare parts to cover the USA service needs once we get this fully going.We have room at the solar array for parts storage and even actual working on gear.The goal would be to end the slow asic rma issues that hurt the industry.

### Reply 1:
I love the technician Certification program Canaan are running, great that Avalon's actually being extremely transparent with their machines and they're willing to actually certify people to repair machines instead of a MyRig and Bitmain Warranty repair service (with some people like Lightfoot, of course) on Bitmain's side, and that they're actually concerned about customer satisfaction unlike Bitmain. This only increases my trust in Canaan, and I'm personally interested in how to troubleshoot and possibly repair these things now. Little question, is the 761 test model essentially just a 741 but with a PSU attached to it, similar to the 841? I wasn't able to find much information on it. I love your review style, especially this small documentary of your visit to Canaan. It's not often you get to see how miners are made, especially with most manufacturers being extremely closed-off.

### Reply 2:
I didn't do a full scale disassembly for the A761 unit, but my understanding is that the control board,PMU board, hash board design etc. is similar to the A741, but there are more A3212 chips in the A761 and it has a built-in power supply unit with thick wires connected directly from the PSU to the PMU boards.And steel tube case design is ofc different compared to the A741.

### Reply 3:
Concur. My farm has also been Bitmain based, but I placed my first order for Avalons yesterday. Post like this one go a long way to making me feel like I made the right call - despite the flood of coupons from Bitmain trying to keep us from switching.

### Reply 4:
Very good writeup of your trip to Canaan!Again, this kind of open-arms support by Canaan for the BTC community is the major reason why that for over a year now all of my farm miner <truncated> has been using Avalons. Between BM's shunning BTC as payment for their miners and my now rather old s9's slowing starting to act up (and aside from using MyRig no hope of hashoard repair/replacement) my moving to the Avalons has been a no-brainer.Canaan has time and again proven themselves the Gold Standard to me when it comes to openness and customer support. Their superior attention to all aspects of miner design just seals the deal. For what it's worth, this is coming from someone who has been designing industrial laser electronics for over 35 years. I design for decades of operation <shameless plug here, Synchron Laser Inc > - today just finished re-installing a system originally built in 1983/rebuilt by us in 2003 with 88,800 hours on it into a new home where it should live for another couple decades or more.Anywho, baring the fans and their fixed max lifetime I can see an Avalon holding up very well for much longer than it would make sense to run them. Last year had to open a 721 to rep<rest of post truncated>

### Reply 5:
We have been in good communication with mods and after some discussion I've asked if they can locate this thread in the top-level Mining section,as I was told this doesn't fit in any of the Mining area subforums.This thread subject is about my journey & visit,I will open a separate thread for AvalonMiner troubleshooting, repair guide, etc. later on. And same thing applies for the upcoming A841 review.

### Reply 6:
I hope the Canaan folks are still reading this thread because I want to reiterate what the others have said. This genuine concern for the customer is almost non-existent in *any* industry, not just miners. This cements my decision to buy Avalons the next time I am ready to purchase!

### Reply 7:
Notes from my journey to Beijing & visiting Canaan Creative in March 10-15, 2018Me posing at the SMT factory visit. (c) Lily Han1) Chapter One The Beginning2) Chapter Two Thoughts about miner troubleshooting and repair3) Chapter Three Some quick planning4) Chapter Four Visiting the SMT factory5) Chapter Five The assembly line and training6) Chapter Six Time to say farewellDate published: March 20, 2018.Steemit blogging website:<link> formatted PDF document version is available for download here (Mega.nz cloud service):<link> Chapter One The BeginningSo, this all started after I did the review for the AvalonMiner 821.Steven Mosher, the Head of Sales & Marketing at Canaan Creat<rest of thread truncated>
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24175,"Date: 2023-10
Topic: Repaired s17Pro hashboard - eeprom error
### Original post:
Hi!I repaired a s17Pro hashboard but now I get this error message in the kernel log. ""autodetection failed, no hashboard eeproms`s have been parsed""Failed to detect miner type from eeproms""Error: cannot detect mining hardwareI have the universal black antminer test fixture. I have tried to add another eeprom file from another s17Pro board with my code editor. But no progress.What can be wrong?Thanks in advance!/Magnus

### Reply 1:
The error might be an incompatibility issue since you said the EEPROM you flashed came from another unit am I right?It won't work you need an EEPROM that came from another dashboard but on the same unit.The hashboard must be synced if the serial numbers are different the control board won't recognize it.There is a way to bypass this if you don't have Eeprom backup on that unit.To bypass this you need to boot this unit with Braiins OS.

### Reply 2:
I will explain from the start. I have started to repair my own hashingboards. After many hours of testing and learning, I start to see some results.I now have 3 s17PRO hashboards that find all the chips. I use the chinese universal antminer test fixture. You have different files on sd card`s that you need to put in the test fixture depending on the hashboard model. I use Braiins and have put in one card at the time in the miner to see if the card works.But with all repaired boards I get this eeprom message in the kernel log.I read something that the test fixture overwrite the eeprom or maybe it was the pic file on the board, and you need to restore it again after repaired the board.Is that right. I have pickit 3.5 and the antminer code editor. What do I need to do so the miner recognize and start to hash with the repaired boards.For example, I see that I dont know the different between the eeprom and pic file.Thanks in advance!/Magnus

### Reply 3:
Maybe somebody have a clue?

### Reply 4:
They are different according to the Zeusbtc below the hashboard has a PIC chip and EEPROM chip so maybe yes you need to restore a pic file but the problem is do you have a working pic file? ZeusBTC is selling pic files in a package, not by piece.However, I don't think the issue is the pic firmware the error is pointing to EEPROM so maybe the file you read from another hashboard might also have corrupted EEPROM you need to find a known working hashboard to read the EEPROM and flash it to these hashboard.- <link>

### Reply 5:
Thanks, that helped alot!

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    ""hardware_name"": ""antminer code editor"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PIC chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""EEPROM chip"",
    ""hardware_is_owned"": false
  }
]"
24152,"Date: 2023-08
Topic: Free power access. Mining opinions wanted, thanks in advance for guidance
### Original post:
Is there a low power usage (like 20 kWh a day or throttleable power, or mining that can be turned on and off), not too hot, not too loud, not too expensive hardware system to slowly mine Bitcoin? I purchased a new house with an overkill solar system. Im also on a grandfathered net metering electric company plan where they store any power as credit I can use for up to a year at no cost. I generate an extra 600kwh more power each month than I use. Right now I have a credit of 7,200kwh that I can use and I get another 600kwh each month (even with charging my ev). Its use it or lose it. Is there a slow mining, low power usage or possible one that can be turned on or off, with a timer, and not loud system, thats not crazy expensive to slowly mine Bitcoin? I live in a very expensive power area (Hawaii 40 cents per kw) and I just let this power go to the power company for free. Even if Bitcoin mining slowly only effectively makes me 10 cents per kW then its still $60 a month. A serious thank you in advance of anyone can give guidance and opinions on this. Aloha.

### Reply 1:
I am going to help you run some math first, 600kWh is really nothing as far as miners with decent profit-creating ability are concerned, the average will be in the 3kw range which means nothing more than 200 hours a month, guess what? this does match your $60 a month based on today's number, 100th M30s++ or S19 pro will make you 60$ roughly 37.5 cents an hour, so that x 200 = $75.But let's look at the downside, that gear will cost you nearly $1500, so you are looking at 1.7 years ROI (everything else not taken into account), besides, those gears are pretty loud if they run on stock air cooling, so more money will have to be spent on some other type of liquid cooling.You could be looking at the small USB sticks that need 200-300w and do 2-3 terahash, those are expensive, very low in hashrate, but are indeed very quiet. If you could overcome the noise issue and can do large miners, things might be doable with some underclocking, better efficiency, and lower noise, a possible shot at getting ROI in less than 2 years then keeping the miners alive to generate some income, or, buy old gears, 3 S9s for pretty cheap (probably 400$ for 3 of them) underclocked to 10th each, they can run for <rest of post truncated>

### Reply 2:
Thank you so much for the thorough answer. Is the USB quiet method very expensive? Can they be run, or can any systems be run without any cooling if they sit in an air conditioned room thats about 78? I read something old online that said the Goldshell KD2 is the quietest mining equipment at 55db but I dont think it mines Bitcoin, or maybe it does. Regarding your question about the 600kwh a month accumulation I could let it accumulate for several months at a time and then run the equipment. Basically near the end of the year Ill have 7,200kwh to use. I could run the mining equipment for a month straight and then turn it off for several months. Your analysis was excellent. Thank you. If I do figure out an option and do get a setup, any chance I can tip you to help me get it? Id really like quiet as possible and not requiring fans and extra cooling. Does the equipment require 220v or 110v with really high amps? Thanks.

### Reply 3:
you want an antminer l3+you can set it to do 600 watts 24/7/365so 24 x .6 = 15 kwatts a dayor 450 kwatts a month.it will earn 1 dollar a day or 30 a monthpoint to nicehash it will send you btc.it is fairly quiet and suits your needs close to perfectly.You can get it for about 200 with a quiet psu shipped to hawaii.note you possibly could get an antminer s15 and run it on low speedbut it will pull 900 watts and about 700 kwatts a monthit will earn about 2 dollars a day. you must use 240 volts. i think it costs about 400.if you want more info about these older units shoot me a pm.note the antminer L3+ uses 120 volts it is okay the s15 use 240 volts it may be better.

### Reply 4:
Or why not a S19 with only 1 hashboard connected? It doesn't cost a lot of money to buy a broken S19 online, and could give a good ratio BTC/kwh. But I totally agree with the L3+ or S15 idea.Do you have any reseller having good (hashing) S15s ? I am looking for some since a moment and my sellers doesn't own any in stock.

### Reply 5:
If it's anything I can help with, I'll gladly do it free of charge.To clarify the subject further, S15 will run just fine with anything between 200 and 240 VAC, it won't run on 110v even with 1 hash board inside.Not a bad idea if the price is right, I'd just make sure the other 2 dead boards are inside the miner, or else the miner will run pretty loud as air will ""prefer to"" travel through the least resistant area which will be 66% of the miner, so the remaining little air will need to increase to cool the working board and thus increase the fans and the power consumption, if the dead <rest of thread truncated>
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    ""hardware_name"": ""S19 pro"",
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    ""hardware_name"": ""USB sticks"",
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    ""hardware_name"": ""Goldshell KD2"",
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    ""hardware_name"": ""Antminer L3+"",
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    ""hardware_name"": ""Antminer S15"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S19"",
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11108,"Date: 2022-02
Topic: B8 issue
### Original post:
helloi see this error Broken Pwcand hash is low anyone knows how to fix it ?

### Reply 1:
I search a bit but I don't know exactly what is PWC and as you said it's broken but according to Google PWC and Bitfury are partners to create blockchain accelerators.So what exactly you are trying to point out?Did you try to contact Bitfury support? You can contact them through email support here <truncated> suggest you if you can copy the logs paste them here I will try to analyze the issue. Also, would like to suggest you try to upgrade the firmware you can download the firmware from this link below including the manual on how to flash it through an SD card. - <link> can also check this support thread below about Bitfury- <link>

","[
  {
    ""hardware_name"": ""PWC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  }
]"
11239,"Date: 2022-12
Topic: When you buy a miner, what are you most concerned about?
### Original post:
When you buy a miner, what are you most concerned about? 1. The total price. 2. The hash rate. 3. Brand 4. Others(welcome to share your opinions)

### Reply 1:
As a European Citizen I care the most about energy consumption, because this will be my main cost factor. It is not too important how much I pay in the first place for the miner since I will quickly have paid more money in power than the price reduction for a inefficient miner.

### Reply 2:
Durability and longevity. This means using the latest industry standard design and technology. Metal backed circuit board, wettable flank ASIC, bolt on Heatsinks, etc.

### Reply 3:
Going with what @MinerMEDIC said. I have fixed cost power so it's better for me to have a miner that will last forever, then the latest & fastest that dies after 18 months.I have stuff running that if WAY past being able to generate any BTC if power was a concern.Also, as a side note 110V power would be nice. Yes, I know the rest of the world uses 220 and building for the little bit that uses 110 is probably not worth it. But not having stuff that can run on 110V or lower amps for the rest of the world does limit some small home / hobby miner sales.-Dave

### Reply 4:
My power cost is such that I can not lose money.Except if:gear dies.Gear is never delivered.gear is stolen.So a 38 watt per this better than a 29 watt per thif the 38 watt gear never breaks.IE:an avalon 1246 87 th at 38 watts a this better for me than a s19 110th at 29 watts a th.

### Reply 5:
As Philipma said, is one of the main reasons I stopped using Bitmain miners after batch-25 of the s9 series. Just too many hash boards dying. Up to the s9 they were much much more reliable.Switched to the Avalon's starting with a couple 721's and never looked back. Out of several dozen of the Avalon miners over the years only 1 failure and that was the fan on 741 - which even after 2 years Canaan replaced no-charge. These days it seems that the PSU's are the main failure area und ja, Bitmain has the same issue (along with other problem areas) as do the Whatminers.

### Reply 6:
That's true. The electricity costs more than ever before

### Reply 7:
Which does kind of loop back to my low power QUIET mining comment.3 or 4TH at a couple of hundred watts to act as a small space heater.10TH as a slightly larger space heater. You can still make them dead quiet if built properly with modern chips. Bitmains R4 came out 6 years ago and did 8.5TH and 850WWhat can you build today that will keep my office warm or the back bedroom of my condo without blowing out my ears?-Dave

### Reply 8:
120V Power would be fantastic - So many miners are built to run on 3000+ Watts and require 220V+ Electricity. Scale them down! Same chips - less or smaller hashboards, smaller form factor... I understand that it is easier from an electrical engineering stand-point to design something for the most ""ideal"" electrical input. However, North America (the USA especially) is a massive, potential, market and there are VERY few companies taking advantage of the, nearly, untapped potential that resides here. That's my 2 sats anyway.... Aside from that - I personally try to seek out build quality and products that will stand up to the test of time.

### Reply 9:
If someone care about the price, just visit here, it is probably one of the best prices on the market: A1246-93T: <link> <link> <link> of these are from canaan offical shop and shipping by canaan directly.

### Reply 10:
Well, don't forget that those prices ignore the taxes you may have to pay on top of that, if you ship them from china to a country that requires you to pay those rather large extra taxes.

### Reply 11:
Sorry for ot but i see you have alot of avalons and i have my eye on A1166pro series. Do you have any of those and would you recommend them?

### Reply 12:
They are not shipping everything from China, they have miners in stock in the US and other countries that they ship from.Not saying that there are no other taxes involved and depending on from where to where the amounts could still be large. But they seem to be trying to save customers some money.-Dave

### Reply 13:
I have a1166 it works fine , if you are usa based this one is good<link> pricestable geargood luck with your mining I hope that you do well with your choice of gear.My partners and I will be getting more of them soon.

### Reply 14:
[/quote]I have a1166 it works fine , if you are usa based this one is good<link> pricestable geargood luck with your mining I hope that you do well with your choice of gear.My partners and I will be getting more of them soon.[/quote]Thanks for voting for us

### Reply 15:
Hello, could you please send us an Email at <truncated> with your address? Our online shop team wants to send you a gift

### Reply 16:
Email sent at 3:42p ESTThank you very much, it will be interesting to see what it is

### Reply 17:
Yea<rest of thread truncated>
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    ""hardware_name"": ""Avalon 1246"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 721"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Avalon 741"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain's R4"",
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  },
  {
    ""hardware_name"": ""A1246-93T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A1166pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A1166"",
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22955,"Date: 2019-05
Topic: Antminer S9 one board is not hashing
### Original post:
I can see all 3 boards with 63 asics in interface but one of them does not hash. I also wanna share that info, I measured all the chips resistance values and one of them has x2 as much resistance value then rest 62. So what might be the issue for this hashboard that causes it not to hash.Any opinion is highly appreciated. Im trying to fix my Miners

### Reply 1:
Much better if you can post the kernel logs here or in pastebin.com. You can find the kernel logs under system>Kernel logs then copy them all then paste it here. We don't know if it is a hardware issue or related to the software issue so start first in software before you touch any parts on the hashboard.

### Reply 2:
This can be a power supply issue, the PCI-E cable/s connected to that particular hash board might be bad, did you try swapping the PCI-E cables from a working hash board?

### Reply 3:
I will do it first thing tomorrow, thanks.

### Reply 4:
Which test points are you using to measure the impedance, and what is the chip's position? Generally the outer rows of chips do have higher impedance, but it shouldn't be double..

","[
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASICs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCI-E cable"",
    ""hardware_is_owned"": true
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22864,"Date: 2019-02
Topic: S9 on Low Power Enhanced Mode (LPEM) showing weird fan speed
### Original post:
I am trying LPEM on a bunch of my S9's. I have 12.5TH/s, 13.5TH/s, and 14.5TH/s machines and so far so good. Although I remotely manage them so it's hard to say what the power consumption is. The hash rate drops quite a bit but they run stable. The only weird thing is on several of them one of the fans shows 30,600 rpm. Anyone else seeing this?As well, I am wondering about LPEM because it noticeably drops my scoring hashrate on Slushpool which makes sense but since reward is tied to it I am wondering if I am actually losing money.

### Reply 1:
Both of the LPM firmwares are known for having bugs that make fan speed readings go to min (0) or max (30600), so as long as it isn't affecting your hashrate I wouldn't worry about it.What you need to do is compare the (profit - cost) of the LPEM and compare it to that of regular LPM. It only makes sense to take a loss in revenue if you can cut your electricity / hosting cost by more than that amount.

### Reply 2:
Like tim-bc said this is well-known bug on ASICboost LPM firmware and I think you can't solve this issue by modifying it through config. Why not upgrade it again with flashing it with the new firmware this one <truncated> fimrware works like same as ASICboost firmware with better power efficiency and reduce power consumption but the problem is it also reduce the hashrate.However, you can overclock your s9 miner with this method <link>

### Reply 3:
S9 firmware has been reporting incorrect fan speeds from batch 1, it really doesnt have anything to do with the LPM firmware

### Reply 4:
you are certainly losing money by scoring less hashrate on the pool ,it all boils down to how much is the power consumption , however if by ""noticeably drops"" you mean that hashrate on pool side is lower than what your miner shows, then you are indeed losing money without taking any other factor into calculation, if that's the case you should change the firmware.

","[
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    ""hardware_name"": ""ASICboost LPM firmware"",
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]"
16260,"Date: 2022-05
Topic: Any Large Legacy S9 Non AsicBoost Miners out there?
### Original post:
Hi, Not sure if this belongs in the marketplace but seems more mining related so admin do correct me if needed.Does anyone have or know of anyone who still runs the S9 series miners that can run on NON Asicboost mode?I have a project that requires a large amount (Min 500TH - Max of 1EH) of S9 type NON asicboost miners and can offer a good rate above the best Bitcoin FPPS rate out there. It cannot be run through Nicehash and this project will last at least till the end of 2022. If anyone is interested or can refer someone who runs a large S9 Mine do let me know or PM me.Thanks all.Mineon.

### Reply 1:
Ya may want to expand your search to include the Avalon 841 as well. It is the last of Canaan's non-AB miners with nearly same performance but far better lifetime.

### Reply 2:
s9 s9k I don't know if this is what you need

### Reply 3:
I can use any S9 or variant including the S9k, if anyone knows of someone who still mines with those machines do send them my way as I am interested to touch base. Thanks!

### Reply 4:
Why not buy any s9 miner you can flash it to non-asicboost firmware?You can do that by flashing it through SD card you can follow this below- <link> then flash it through WebGUI with 2017 firmware still available from the Bitmain download page.

### Reply 5:
We have mines still running these machines

### Reply 6:
You have to pay a lot more to convince anyone, Asicboost saves on average 13-18% on power, so let's run the numbers.profit today = 0.15$ per th and S9 with 13th gets 1.95$ a day.Asicboost activated> 88w per th, so a 13th S9 takes 27.4 KwH every dayAsicboost deactivated> 103w per th, 32.1 KwHso about 4.7 kWh a day per miner so an extra 0.235$ per day for 5 cents rate (could be higher but I doubt anyone with higher rates still run S9s) and that puts you at 1.95+ 0.235 = 2.185$ and that is 12% more than a PPS pool.Plus, S9s with Asciboost activated run A LOT cooler, and require a lot less cooling, so there is more cost involved when running them without Asicboost, also the lifespan of the miner will be reduced for running hotter, so not even that extra 12% can make up for all of that.To add more insult to injury, the vast majority of S9s run on firmware versions that do self-tuning to squeeze a lot better efficiency, anywhere between 70w to 80w, and those firmware don't have a non-asicboost version, so it looks like the 12% can be anywhere near double.I have a few hundreds of S9s that have been tuned and mining at the best efficiency they can, took a lot of work to get them to the sta<rest of post truncated>

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  {
    ""hardware_name"": ""s9"",
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    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""S9 or variant including the S9k"",
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    ""hardware_name"": ""machines"",
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23899,"Date: 2022-03
Topic: What does ""seek hash"" mean in this sentence?
### Original post:
Hello everyone!I was reading an article on mining algorithms when I came across the term ""seek hash"" in the following sentence. Could you please explain what it actually means?The sentence in which it appears:Miners decrypt this algorithm (seek hash). The link to the article:<link>

",[]
16453,"Date: 2023-03
Topic: What's your most efficient solo mining rig or plan
### Original post:
What is the most effective way to lower the cost of electricity for solo mining Bitcoin, something you would want to set up and never look back again until several years later, it has to be very energy efficient, the size shouldn't matter that much, I am not looking to solve a block very soon.

### Reply 1:
There's no magic bullet here... If you buy hardware with the lowest Joule per Hash, you'll get the most hashes for the amount of energy you spend... It's just that simple. Some people might advise you to overclock or run different firmware in order to optimise your hardware even more, but you have to realise that when doing this, you might end up breaking your hardware or installing backdoored firmware sooner or later (and those optimizations are usually just a couple percent better... It's still more efficient hardware = more hashes for an amount of energy).What does make it complicated is that the most efficient miner might not be the most sturdy one... And if you pay to much for your energy, odds are pretty big you'll never ROI, no matter which miner you buy.

### Reply 2:
Yes it is quite annoying, like most things in life there isn't really a way to make free money, but mining comes close if you can get it to be efficient

### Reply 3:
It depends. If you are just interested in the principle of mining, and the ""lottery"" side of solo-mining, you should look at what Sidehack produces as miners: the R606-R909, Gekko Newpac, CompacF, these are small ASIC miners that don't consume a lot of power, and don't need to be monitored if they are well ventilated/cooled. They are very small hashrate miners, it's ideal for home mining, but you won't reach PH/s levels unless you accumulate thousands of them.Otherwise, recently Canaan had some great promotions on their online site, and the A1166 takes 47J per Th, which is pretty decent. But in any case it's case by case, it depends on your price paid per kw/h. I can advise you to look at Willi's Long term Group run: we rent 200TH/s for 6-7 months through a hashrate rental group, and we share the block reward if we have a block. It's a way to get a foot in solo mining without worrying about the hardware and its maintenance, or the electricity ; as it is rental hashrate. We recently hit a block in the Groupbuy#30 but as you know, it is totally random. More informations here if you are interested : <link>

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  {
    ""hardware_name"": ""Gekko Newpac"",
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    ""hardware_name"": ""CompacF"",
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23349,"Date: 2020-11
Topic: S17 Pro 53T Heat output and hashpower?
### Original post:
I'm considering a new build, but airflow / cooling would be limited compared to my other projects. I wonder if using some S17 Pro running in low-power mode might be an option, on the assumption they produce less heat than a typical higher-powered miner (such as S17+ 70th / S19 95T etc)?Also I note Bitmain quote 36-48T in low power mode. But what is the typical output, or do they all tend to fluctuate that much?

### Reply 1:
42 th on low. about 1225-1300 watts bitmain firmware.I have 17 s17pro 53th 41-43th on all but one. That one does 46th it also does 60th on turbo and is the best unit of the 17 I have.vnish firmware can do as low as 980 watts and 38th more efficient then the s19 pro on stock firmware.I have yet to try braiins firmware on my s17pros.

### Reply 2:
Thank you Have you paid much attention to heat output in low mode?

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    ""hardware_name"": ""S17 Pro"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S17+ 70th"",
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  },
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    ""hardware_name"": ""S19 95T"",
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  },
  {
    ""hardware_name"": ""s17pro 53th"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""s19 pro"",
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]"
16264,"Date: 2022-05
Topic: Price drops and the machine prices
### Original post:
Historically does the prices of the new machines goes down as the bitcoin price drops ?

### Reply 1:
Yes, they do, but not instantly like most people expect/hope, it can take months, and it will depend on the demand, unfortunately, many people overpay for mining gears, so they pay 7k for S19 today, and even if the profitability drops by 25%, they will still pay 7k, so this kind of ""dumb demand"" slows down the price drop.Another factor would be the sellers refusing to sell at lower prices, they will hold for as much as they can, in hope of a difficulity drop or a rebound in the price so they can sell for higher prices.These two factors plus a few others I might not be aware of, they keep the price from dropping, especially for brand new gears, used gears drop a lot faster in price.I still recall that right after the halving when profitability dropped by 50% instantly, gear prices didn't flinch until weeks had passed, so I expect this time it will be the same, but profitability has to stay low long enough, if we rebound soon then gear prices will not drop.

### Reply 2:
Mikey is correct.For us to see a gear price drop these prices need to stay here for 2-3 weeks. Prices will then fade more.Back in July/August 2020 height of covid shut down I got an s17 at $785 usd.You need a strong slump that lasts for weeks to push down the prices.A s17 set to 1500 watts will burn 36 say 40 kwatts a day. A six cent miner will spend $2.40 a day in power and that miner will do 48th or about $6.14 a dayso 6.14-2.40 = $3.74 a day profit.this means a big farm with s17 or s19 is still good. So no big sell offbut drop price to 20k and daily earn is $3.96so 3.96-2.40 = 1.56 for an s17 which is shitso 31k will not crush asic pricesbut 20k will crush prices.in both cases you need 4 weeks at those coin prices .

### Reply 3:
I can speak to GPU mining in particular. Used video card prices react very quickly to profit changes. Sellers lower their asking prices within 3-5 days. New video cards take 1-2 weeks to adjust to the new profit reality.

### Reply 4:
The other thing to keep in mind is time & labor.You have to sell the miner, pull the miner [it's silly to pull it before it's sold], box the miner and ship the miner.You then say screw it, I'll just leave it in the data center mining. Too much effort for too little money and prices might go back up or difficulty may drop or.....Someone who looks a lot like me may have lost a lot of money doing that with old servers years ago.-Dave

### Reply 5:
The biggest issue of all is depreciation recapture under U.S. tax law. If the owner wrote off the ASIC and they sell it for more than they deducted, they owe income tax.

### Reply 6:
By some comentes that I have been reading here, I wonder what is the advantage to mine in USA ?

### Reply 7:
Probably political safety as well as tax deductions from depreciation (like Section 179). The disadvantage can be higher power cost in some areas or import tariffs.

### Reply 8:
Not if you are not a U.S citizen, because well, the U.S might just decide to impose some sanctions on a whole country for whatever reason, they could seize your miner or do anything they want, this, of course, applies to every other country, so long story short, do not mine outside of your home country, it does not matter how crypto-friendly that country is.Not your country, not your farm. Not your farm, not your gears. Not your gears, not your BTC. Not your BTC, ok that's enough .

### Reply 9:
Agreed. I would never start a farm outside of my home country even if electricity is free. Screw the federal government. But they simply have more hoops to jump through in order to seize a private citizen's business or crypto or mining farm compared to <truncated> They probably have to go through at least 1 court trial unless the business is obviously criminal. These courts are decentralized (district court, circuit court then Supreme Court) so there are opportunities to appeal.Yes, we saw what happened in Canada with the truck drivers, but they were targeted because they were as loud and in the public eye as possible. If Washington wants to confiscate assets, they will go after Coinbase/Kraken first before thinking about some random mining farm in the middle of nowhere.

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    ""hardware_name"": ""ASIC"",
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]"
22962,"Date: 2019-06
Topic: S9 firmware issue
### Original post:
Where did you get your control boards from? It may be that your control boards have firmware that is either hacked or has a dev fee. I think there is a technique to reset the firmware or you can try loading BraiinsOS via the SD card. Youll need to move the jumper at JP4 to startup from the SD card. Take a look at the following website to get started.<link> read the forum at this link and see if that helps<link>

### Reply 1:
I have ordered a 3 new motherboards for my S9 antminers and they worked just fine for a while, but around a day ago they have started to mine to a different address than mine. The address is: <truncated> it my miner status page looks like this: <link> did a google search of course,and I've found that this supposed to be some kind special software and it includes a developer fee as well. I would accept the dev fee if it was reasonable even if i have never wanted to use this firmware but it goes on my other miner for over 12 hours.I'd like to get rid of it as soon as possible. I don't want to use other people work for free,and i would like to not mine for another individual either.Reinstalling a genuine firmware only seems to solve the problem temporarily.Any help would be appreciated.

### Reply 2:
Where did you get the firmware from? Are you using firmware which is posted by newbies in mining software section? Because of them has backdoor or they are stealng hashrate from your miner.So I suggest the only solution for this is to flash it with <truncated> Then after successfully flash it through web GUI perform a hard reset by holding IPreporter/Reset button for 15 to 20 seconds until the miner reboot.If you receive error when flash the miner through webGUI flash it with SD card I suggest follow the method from here S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery. Then flash again through webGUI follow the suggested firmware above and don't forget to do a hard reset.

### Reply 3:
Definitely go install Braiins OS, its going to wipe whatever thrash has gotten in there, and while you are at it, make sure to set up proper passwords just in case.

### Reply 4:
This is a virus, I've seen it on machines I've worked with, mining to the exact same address.With Antminer S9 you can sometimes do an IP Report reset and then flash one of the new official firmwares right away. Otherwise you'll want to install good firmware from an SD card, or get new control boards.You need to make sure that you've changed all of your SSH passwords, or are using a firmware that disables SSH access.When you SSH to a miner, you can use the passwd command to change the password, and then run cp /etc/shadow /config/shadow to apply the change (otherwise the password will revert when the miner is rebooted).You can see that the authors of this malware are currently receiving 0.8 BTC ($7000) per day: <link>

### Reply 5:
It is exactly what tim-bc described it as, however you most likely won't have to go to the extend of getting another control board, just flash an official firmware or braiins using an SD card and your problem should be solved, in some cases even a normal reset can fix the issue, you should be careful from the vendor who sold you those control boards, and just in case they are not aware of it , they need to have the issue fixed ( the last part is based on the assumption that the control boards you bought came with this malware which is usually the case, they sell for cheap and that's how they get so many people to buy them).P.S , do something about your miner's temp, the first board is going to be fried - if the sensor is reporting the actual temp.

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16328,"Date: 2022-09
Topic: Bitcoin miner in Holland
### Original post:
Hello everyone,In my country there are no miners BTC, I would like to talk in real life (maybe lunch together) for discussion about the possibilities to create something in Holland. Is there miner btc in Amsterdam, hereI will be in Amsterdam soon

### Reply 1:
What do you pay for electricity? There's a reason it's not viable in the Netherlands: it's not profitable.

### Reply 2:
Or you should say that you have not come across any miner yet. Some people keep these things secret, and will never come out plain to just tell anyone that they mine bitcoin.If this thread stays long enough, most likely you can meet someone in Amsterdam.

### Reply 3:
This is a post for meet expert miner in Europe. I don't know much miners and I would like meet they

### Reply 4:
I used to be a Dutch miner but not in Amsterdam atm. You can PM me to talk crypto mining-related stuff.

### Reply 5:
I'll be in Amsterdam for ADE next October and I'm mining BTC but my advice is to check out the Elec cost which I guess must be very exp in Holland now!

### Reply 6:
Not BTC, but was there any serious ETH mining?I wonder if we may expect any bigger wave of used GPU cards in Benelux. Looking at 2dehands.nl there are some rigs for sale, but I think it did not start yet.Could be a good time coming to buy some hardware crap Personally I look for 2x2080 to play a little with nvlink.

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16519,"Date: 2023-05
Topic: I will like to know more about bitcoin mining system
### Original post:
I really like to be enlighten about bitcoin mining system.Though i read few of them,the like of CPU,FPGA and CLOUD MINING. If there are more important once i will love to know about them.

### Reply 1:
What is the point of opening a new topic when you have already asked a similar question here: How can i start bitcoin mining?

### Reply 2:
All a waste of time or scams.Bitcoin mining is only done with ASICs.

### Reply 3:
its already a couple of day that some new member discussed about Crypto Cloud Mining for some reasonare they try to convince us by using new account hahaha cloud mining is BS last my last post discussed about Binance cloud mining and it turned out that the day per terahash is around 0.0046 USD if you have small money better buy btc instead mining

### Reply 4:
I can give you some sites where you can read more about bitcoin mining system and explore these site to understand deeper. Bitcoin.org is the official website for bitcoin it provides a detailed introduction to bitcoin mining and how it works. You can find the information under the ""Getting Started"" section of the website <link> is Bitcoin Mining Hardware it provides information on the latest Bitcoin mining hardware, including reviews and comparisons of different ASICs.<link> can also read some discussions here at mining section, also you can ask questions and learn from experienced miners. It has an entire section dedicated to mining. Just don't be shy to ask or share some of your thoughts about mining or maybe if you are also interested in trading.

### Reply 5:
Op is is not here to learn but to post nonsense. There is no different between this thread and this <link> this thread would have been a comment in the other thread. Op I know that you are looking for for Merits but this not the way to have it. Read more than posting, so that you have a quality post to have what you are looking for. CPU is good in the Mining field and also ASIC mining is good as well. All what you have to do is to have the machines and start with the ones you have first.

### Reply 6:
If you are still interested in mining, then don't waste your time reading reviews about CLOUD MINING, because this is a lost investment and CPU mining is not popular right now, just like GPU mining. Motherboards have 1 processor, Chinese budget motherboards have 2 processors, but these are old server processors.About FPGA read the post<link>

### Reply 7:
Don't love cloud mining they are 99% scam companies, a brother of mine fell for one called demine and they are asked to buy some hash rate, which is wrong, a real Bitcoin miner needs a hardware equipment to start mining for real, but cloud mining comes up with fake miner that looks like it's really mining and after they have paid some portion of reward they will exit scam on all their customers, they never had any mining machines, it's a pyramid scheme they are running, they will collect many funds and use same funds to settle early customers and it will look like they are really paying, those people they paid first will try to confuse new users that the platform is paying, that's how they will make a lot of money from innocent victims.

### Reply 8:
That's why I sometimes feel shaken by the newbies who ask questions here in the forum, because the questions are repeated over and over again, you never know if there is only one person behind those accounts just to get them noticed and believed. Most people here know that nowadays cloudmining sites don't do anything good, especially on mobile phones. And the practice of bitcoin mining is also known by the majority of the community here that it will really require a lot of money and knowledge. So I strongly agree with what you said that even if the capital is small, it is a better way to buy bitcoin than to do bitcoin mining.

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23318,"Date: 2020-08
Topic: Antminer T9+ restarts every 3-7 min; Blank Miner status/Hardware ver/BMminer ver
### Original post:
Hello everyone,I recently purchased a used (refurbished) Antminer T9+ to get my feet wet with mining BTC and have encountered the following issues.The miner restarts every 3-7 minutes. The fans turn on at max speed (starts sounding like a loud vacuum cleaner) and then turns off and restarts.On the webpage, my hardware version, bminer version, and miner status are all blankI am receiving the ""bmminer not found, restart bmminer ..."" message in the kernel logsMy PSU is an APW3++ connected to a 240V socket with a 240V 10A cable. I've used a multimeter to test the cable and see that it's yielding the given voltages +/-5%.I've tried the following steps without any different results.Rebooted the machine from both the webpage and unplugged/replugged the cable countless timesReplaced power cables to the PSUUpgraded to the latest T9+ firmware from the Antminer webpageReset the firmware back to factory defaults via the webpageUsed the ping diagnostics to ensure I was getting a successful responseCopy and pasted the pool URLs and names from my Antpool account. My username is set to their specs: e.g., abc-t9.001 or abc-t9.10x32Here are some more details from the webpage and kernel logsKernel Ve<rest of post truncated>

### Reply 1:
How about the temp on the miner's status on the WebGUI? Can you make a screenshot? And post it here.Or try to flash it through SD card flashing. You can make an SD card program recovery by following the guide below.- <truncated> forget to switch the JP4 before you put the SD card.

### Reply 2:
There might be an issue with how you use the pool/worker details, Antpool is the worst pool to test a miner with, I usually test cksolo as you can't make any mistakes as long as you use a valid BTC address, so please try the <truncated> up to 15 mins before you reboot the miner, if it starts mining then you know your issue was Antpool, if the problem remains, then I would like to see a screenshot of the miner status page and the system view (main page).

### Reply 3:
When using copy/paste you have to be careful and make sure there are no whitespaces that got copied as well as the text, they are usually at the end of the text you pasted. Most miners and pools do not like a whitespace and treat it as an invalid character so will not connect.

### Reply 4:
Thanks mikeywith, I was afraid that would be the issue. You are correct in that each chipboard should have 54 ASICs each.I have a meeting with the seller's technician so I'll report back here the results for the benefit of the rest of the forum. This is the last time I buy a used miner, haha. On the other hand, how did you'll get so proficient at debugging these embedded devices? The level of detail and amount of information to parse through in the debug logs is quite mindboggling. I'm a software engineer by trade and it's already complex enough, so I can't imagine how non-technical folks begin to fix these sort of issues.

### Reply 5:
Thanks for the test data. I'll try this suggestion out before I start flashing with the firmware. By the way, your post on the Internet Connection Sharing was ingenious; I ran out of long enough RJ-45 cables.Yeah, I was very paranoid about having no extra spaces.I've tried the suggestion of switching over to the other pool with the same results. Interestingly, the kernel logs are showing something about a PIC failure now.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ <rest of post truncated>

### Reply 6:
The results are pretty different, which means you were likely using an invalid worker/URL, however, you now have a bigger problem than just a trailing space or bad pool <truncated> Chain[J2] has 18 <truncated> Chain[J3] has 18 <truncated> Chain[J4] has 0 asicIf I recall correctly the T9+ has 54 Asic on each dashboard, the exact number doesn't matter as I am 100% sure it's way more than 18, which means you have 3 faulty hash boards, and fixing them would cost more than what miner is actually worth.Having said that, this could be a PSU related issue, try to unplug 2 hash boards and keep only 1, perform this test 3 times on each chain, I would also Sdcard the miner and install a custom firm<rest of thread truncated>
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24109,"Date: 2023-04
Topic: 20 amp or 30 amp
### Original post:
What are the pros/cons of using a 20 amp circuit versus a 30 amp circuit for a Bitmain S19 Xp 141T ?Thanks,Ron

### Reply 1:
a s19 xp pulls 3100 watts on normal it will work on a 20 amp or a 30 amp.But if you have 2 x s19 xp units they won't work on a 20 amp circuit. while two s19 xp units may work on a 30amp circuit.So the 30 amp is more costly to install as it needs 10 gauge wire not 12 gauge, but may allow for expanding your mining beyond one s19 xp.

### Reply 2:
Thanks for your prompt reply!

### Reply 3:
Alas only if you have 220+VIf you have 110V then you shouldn't run any recent miner, or at least expect fires and death happening.

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16312,"Date: 2022-08
Topic: Could Bitcoin's recent decline lead to the start of mining disasters?
### Original post:
Bitcoin is down 189 today, shall i try to buy the miner?Getting rich overnight is everyone's dream . Maybe mining is a long-term process, we should not care about the temporary rise and fall, but long-term hoarding is the hard truth.who have mining can communicate and discuss together? Could you recommend me some cost-effective mining machines?

### Reply 1:
Without knowing certain things [e.g. electricity rates, your budget and etc...], none of us can accurately answer your question, but I'm going to post a link that might come in handy: whattomine.com- Contrary to what's written in some of the articles, such devices aren't always plug-and-play, and even if they do work right away, it's not going to stay in that state forever [e.g. faulty boards and etc...]!

### Reply 2:
As the price has dropped, so has the price of mining equipment. So, it's a good time to buy miner now. But what you need to consider is buying new or used? What is your budget? As well as local electricity bills, the environment in which you place the miner, etc. Or do you have a miner model you want to know about? So that we can give more specific suggestions.

### Reply 3:
You're not going to get rich in the mining industry. That is because if you even make the slightest attempt to dump your coinbase fees and transaction fees, the market will notice and you will set it in full reverse again.

### Reply 4:
To become a miner is a decision to make that should not be affected by the fluctuating price of bitcoins. One btc still remains One btc, and that is what you should be your overall motivation. If you plan to buy a miner, go ahead and do so, btc will not continue to decline even if the situation currently looks as though there is no end. I believe that if you have an interest in mining and you have settled and put under control the other factors necessary for successful mining, go ahead without consideration of the decline.

",[]
13629,"Date: 2019-11
Topic: Antminer S9 Volt Rocket Ship firmware mod! ~ALL S9 MODELS INCLUDING S9i S9j~
### Original post:
teserz please give me best bmminer for t9+ with 1800WPSU

### Reply 1:
So my observations so far with 13.0, 13.5 and 14TH S9 from different batches with AWP3+ PSU are, that using bmminer880 with 750 - 775 MHz freq. gives me 15.5-16.0 TH and draws about 1700W from the 1600W PSU. But it works stable.Using bmminer870 with 750-775MHz gives me more HW errors and draws only about 50W less power. Temps are about 2C lower. But the hashrate seems also a bit decreased. Maybe due to the HW errors.Thanks taserz for your work.Any way to also enable the hidden settings on the minerAdvanced page?

### Reply 2:
S9 13.5Th + P3 Power PSU 2100w -> Fix 650M frimware -> bmminer8800.08 $/kWh750m - 15.7th - 1670w profit - $0.38700m - 14.9th - 1540w profit - $0.44650m - 13.9th - 1430w profit - $0.44Overclocking is not profitable?

### Reply 3:
I have a question for you @taserz.I am using your mod for 3 of my Antminers. First one is 13.5TH/s January batch, using 910v 825 freq and mining stable 17.6TH/sSecond one is 13.5TH/s March batch, using 920v 825 freq and mining stable 17.5TH/sThird one is 14Th/s May batch, using 890v 825 freq and mining stable 17.6TH/sAll of them are using 1600W Bitmain's supply(I am only not sure for third one if it is maybe 1800W but it probably isn't, nevermind that).My question is: why is PSU pulling 2kW from wall when it is rated only for 1600W, I mean, how is that even possible and will it hurt the PSU in any way? As I am running them for a week now and I had no problems.

### Reply 4:
Of course it reduces the lifetime of the PSU, since it is not built for that load. On the other hand it has reserves. I am running them at higher loads for over a month now.Check, if your cables are made for that loads! Dont burn your facility A rule of thumb is 80% of peak load can be constand load. So if your cables are rated 10A, i europe you could theoretically draw 1800W constantly without problems. You can draw more, but keep in mind to check your cables some times.

### Reply 5:
I run them at about 1750W now with bmminer880 at 750-775MHz. I had to tune one miner down to 725MHz because after some time it showed 0TH. The others run fine.I might slowly ramp them up. But I want to stay with 880 for now and test how high I can go.

### Reply 6:
Are you running on s9 13.5 14 or s9i/s9j?

### Reply 7:
So you are telling me that I live on an edge... That is good to hear I've been checking cables every day at highest temperature peaks, they are ""cold"".Cable input is rated for 16A 250V and output is 10A 220V(not sure for voltage, might be 250V).Only once has it powered down due to overdraw(I guess), It reached ~2150W when I tried 940v 850 freq, and it even worked fine whole night while it was colder and when the ambient and outside temperature raised, it powered down.

### Reply 8:
I have only S9 with APW3++ PSU and bmminer880:13.5TH miners running @15.4-15.8 TH @ 1620-1690W with 750MHz13.0TH miners running @15.6 @ 1620W with 750MHz14.0TH miners running @ 15.5-16.5 TH @ 1680-1720W with 725-775MHzIs there any way to tune each board or even chip individually? I can not find any legit info about that.

### Reply 9:
You can it's a bitch and a half to code it but the gains are so small it isn't really worth it. Board tuning would be easier to do but if you got apw3++ only I wouldn't bother since you will have some boards that can take more power and clock higher and not enough juice out of that apw

### Reply 10:
My S9i running on 800Mhz with bmminer880, autotune stock firmware.One of the board is much slower than the others.What can I do?<link>

### Reply 11:
I would try bmminer 890 or 900 since it is probably a power issue at that frequency.

### Reply 12:
Great idea, thanks!With the bmminer 900 at 800Mhz the GH/S(ideal) and GH/S(RT) is very close, boards speed almost equal and the has rate is 17.15 TH/s.The power draw from the wall is 1900W, and this is the max of an APW3++ power supply, I confirm.At 825Mhz the PSU overloaded and switch off.So I need a second PSU.

### Reply 13:
I see. Do you know a firmware without dev fee that supports this?I am curious because I think that maybe we could max out the PSU and chips better by tuning good chips and leaving bad chips on lower frequencies.

### Reply 14:
Use 1 psu. The difference you gain is so small verse the power you draw beyond 800mhz.

### Reply 15:
I don't have to pay for electricity, so it not problem.What is the maximum frequency you reach with S9i 14TH/s bmminer900?

### Reply 16:
Hi, does this send a fee to the dev or is it dev fee free? Does the dev take donations?I have the 13.5 TH/s S9 with auto frequency. I've set the frequency to 800 MHz and using the 8.8v file, most of the time I see 16.6 TH/s, but sometimes I see a random value, is this nothing to worry about?A few F5 refreshes clears the problemI have another PSU on an E3 (860W), can I take the re<rest of thread truncated>
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23143,"Date: 2019-11
Topic: more that 3 hashboard on S9
### Original post:
I never heard someone success adding more hashboard in s9 they are only run at 3 hashboards. Did you try to flash it with Braiins OS? If not try it and maybe it may detect another hashboard. You can download the OS from here including the documentation from here: <link>

### Reply 1:
The old controllers on batches 1,2,3,4 had more then three jacks at least four and they all worked with the old 2016 firmware.Btw this is a repeat thread question but I am on an iPad and do not want to look back for the old thread.

### Reply 2:
There is no 3 board only limitation in the controller itself, it's all in the firmware, people used to connect 6 S7s boards to one controller and 4 S9s boards on a single S9 controller , you just need to figure out the right firmware and get a longer data cable since that extra board will be a bit far to reach to.here are some similar questions phill <link>

### Reply 3:
Hion the S9 controller board, there is more than 3 socket please and I want to use them.I soldered a new socket and connect the 4 hashboad but the firmware didn't detect it.I tried many other custom firmware but all of them only support 3 hashboards.Is there any config for this limit ??here is the controller board picture: <link> mean like this: <link>

### Reply 4:
I already installed Brain OS, on the menu, it shows that it can support 6 ASIC boards.<link> when I connect 4's ASIC board it didn't detect it and it didn't work.I think there should be some manipulation on the board controller.there some jumper on the backside on the controller board that I think should be soldered because the normal one is soldered.here is the original board image:<link> here is the one that I soldered.<link> also I saw that there three resistors new to the male connector on the board, I added three new resistors for the new connector that I added, here is the picture:<link> All these things didn't work.The S7 controller board is different and it is true that it supports more than 3, I did it 3 years ago but right now the concern is S9.

### Reply 5:
It seems that you are trying everything.The soldered part you are talking about on the back the control board is for RX, TX, ETC... so I think with or without soldered they should be fine.Where did you get the resistors? is it from another control board? if you put a random resistor there is a possibility that the control board may damage.I tried to search about adding hashboard for antminer s9 in the whole night but no success. I already used any keyword but no result.Try to go directly on Braiins OS official thread and maybe the author or other Braiins OS users will give some tips to link more hashboard. Here is the official thread below.- <link>

### Reply 6:
Thanks for your effortYes, I tool the resistors from another broken control board.for sure I will toch Braiins OS official thread too.

### Reply 7:
EDIT: i just found that video:Antminer S9 - 6 Boards per Controler Modification<link> time ago , Some where on the youtube i watched a video , but i cannot remember if it was S7 or S9 or what ..but he added/soldered lots of resistors for each extra socket , also on the back of the board as far as i can remember , that board was kind of like your board , but he soldered the resistors on somewhere like (on your picture) R138 to R140 , and R142 to R144 and ....

### Reply 8:
It's ctrl_c41 control board model and according to some comments that there are slots(terminals) are not working so I think he needs to place it to other slots and add another resistors. Try any of these slots j2, j3 and j4.The default firmware is fine according to some comments so no custom/modified firmware just to show up another hashboards. Any version might work.He needs to make sure the resistor won't die while soldering this might be the reason why his first try failed.

### Reply 9:
Thanks, everybody for helping me to do this task.finally, I did it.Also today I found a youtube video that demonstrates how to do it, you can reach with via below link:<link>

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  {
    ""hardware_name"": ""S9s boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9 controller board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7 controller board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""resistors"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ctrl_c41 control board"",
    ""hardware_is_owned"": true
  }
]"
23200,"Date: 2020-02
Topic: Antminer S9 Highest Efficiency Operating Temperature
### Original post:
Is there a specific temperature where the Antminer S9 works more efficiently? If electricity cost and cooling was not a factor, would it run faster or produce more running at 5c rather than 30C?

### Reply 1:
According to specs on bitmain website for the S9k which I recall to be the same for S9/S9i and S9j ( I hope someone has archived those old models specs) it mentions thisIn fact, the above Min and Max apply to all other miners including the new miners, the hotter the better in terms of hash rate.Also in the table, it has 13.95th at 40c ambient temp and only 13.5th at 25c, which probably mean that the S9 hashes at slightly higher speed the hotter it the temperature is, however, it consumes more power and might reduce the lifespan of the miner's chips.

","[
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    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9/S9i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9j"",
    ""hardware_is_owned"": false
  }
]"
11372,"Date: 2023-10
Topic: S19 Water cooling kit
### Original post:
Hi all,Anyone has experience with S19 water cooling kits? If the goal is to reduce noise, is it worth it?Thanks!

### Reply 1:
Installing a water cooling kit can greatly reduce the noise, prolong the life of the chip and additional to that it can improve the miner's performance.The noise is reduced because you dont need these high-speed fans, which are required for air cooling, any longer. As I mentioned above: By using water cooling, the temperature will drop significantly which also has a positive influence on the power consumption of the hashboard.Make sure that you choose the right kit if you are going to buy a kit. There are a few differences between the S19 models.

### Reply 2:
Thanks for your reply! very helpful.Noise will be reduced but what about the radiator fans? I guess they might be loud too?

### Reply 3:
There will be some noise ofc. But its nothing compared to air-cooled systems. Some kits are designed to operate as silent as possible. They also come with a fan speed controller which can be used to control the speed and so on. However, you should be careful if you don't know what you are doing - dont lose sight of the temperatures of the hasboards.

","[
  {
    ""hardware_name"": ""S19 water cooling kits"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""high-speed fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""radiator fans"",
    ""hardware_is_owned"": false
  }
]"
23034,"Date: 2019-08
Topic: M3 low-power firmware download
### Original post:
Hi I have a few m3x. It's hot here in the summer so I wanna decrease their hashrate. There is a low-power firmware in pangolinminer.com but I can't download it. I think Google prevents. There are other firmwares in the site that can be downloaded. I don't know why?! Is there anybody to help me to get this firmware?<link>

### Reply 1:
If google thinks a file in drive is ""infected"", only the owner will be able to download it. You should probably contact pangolin at <truncated> for an alternative link.

### Reply 2:
Here's the method to download the firmware from the google drive below.Hold ctrl from the keyboard and select all files from google drive then right click like the image below.Now, click the download and let the google drive zipping all the files selected after zipping is done it will automatically download the file without scanning.

### Reply 3:
Unfortunately google doesn't zip if I choose the firmware showings an error.

### Reply 4:
Ok, I downloaded it and upload to another hosting.Here's the link <link> files from the link above are download including the guide.Hope it helps.

### Reply 5:
Thanks Man, helps a lot, there's nothing in pangolim drive acc.

","[
  {
    ""hardware_name"": ""m3x"",
    ""hardware_is_owned"": true
  }
]"
4010,"Date: 2020-09
Topic: I am placing an order for bitmain s17 pro psu's
### Original post:
So I am ordering 2 of these.I can order more if you are usa based let me know I will bump order from 2 to 4.I can get a small discount for them. of course I may get cut by import tax.but 4 come to 4x 134 =536 + 174 = 710 to ship to me in nj ,usaor 178 each. I plan to get them tonight.So I got 2 of them today and I have 1 on hand so I will have 3 spares.I have 20 s17,s17pro,t17 on hand so I wanted 2 spares not one. I ordered a second one today as shipping price was good so it brings me to 3.Here is Bitmain link<link> sure how long they will stay in stock.

### Reply 1:
APW9+ has been the unicorn mostly but both models have some sporadic inventory.

","[
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    ""hardware_name"": ""Bitmain S17 Pro PSU"",
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  },
  {
    ""hardware_name"": ""APW9+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  }
]"
13810,"Date: 2023-01
Topic: BTC Mining OS
### Original post:
Hey guys,I'm about to finalize a small data center a bit distant from my place (900km).I will have a local guy to reboot and halt gears when it's needed.What OS do you guys recommend for managing Asics by distance?Many thanks,L

### Reply 1:
Monitoring software is not an Operating System. It is software that runs on whatever OS you run your PC with ('doze, Mac, Linux, etc.)That said the best is Awesomeminer. Their Forum thread is here.

### Reply 2:
Awesomeminer is the best tool to remote miner but if you are looking for a mobile app that can remotely access your miner there is another option you can use HiveOS app the only problem is you will need to flash your unit with hiveos.If you want it you can follow the guide here <link>

### Reply 3:
Or you can do anydesk and run a few hundred that way.<link> lot depends on how many pieces you have.doing 200 setting each miner to a static address is fairly cheap and easy.But I would not do more than 200 pieces like that.I will use a decent modem and set my miners on address 21 and upIe192.168.1.1 - .20 = the other <truncated> = the miners I FELT MARK THE MINER TO ITS STATIC ADDRESSso 192.168.1.21 is marked miner 21up to and including 192.168.1.220 which would be miner 220.If the setup is new it is easy to do this.if your router is 10.10.1.1same idea.it is very organized for trouble shooting since you can see you dead miner on the pc at the mine.You need a pc at the mine I use this style<link> I have one at my house instant access to the mine and I can tell the guy go to unit 123 or 125 he will find it easy peasyI do 2 mines with 2 different services and about 216 units of gear.cost is zero. other than the 3 pcs used. 1 at home and one in each mine.

### Reply 4:
If you mean the operating system(OS), let's say you have multiple mining rigs, you might need a linux based OS to make it easier for you to manage them. But if you only have a couple of rigs and then run them, windows might be fine for you so the list I'm going to go over is first we have windows and after windows we have linux based mining OS so that would include Hive OS or Rave OS and all the different linux based mining OS.

### Reply 5:
If you need a simple solution to access a windows computer that manages you asics you can simply use teamviewer. Sounds <truncated> but it works and is probably what most people used before all those fancy OS were invented. If everything is set up correctly you should not need to access the miners to often.

### Reply 6:
Teamviewer idea was stolen from an idea long before it, vnc on those fancy OS.Possibly even uses the opensource code against the license

### Reply 7:
anydesk works pretty good.I run two mines about 200 units of gear.not sure if kano knows they stole code .at kano did anydesk rob code?

### Reply 8:
I got turned on to <link> some time ago.It's improved over time overall and they are continuing the rolling out of improvements and continuing development.

### Reply 9:
Maybe Linux is more recommended for Os mining, Hive Os is also one of the leading OS for Mining, Linux is more ideal for computers with low or old resources, and for users who don't have or have limited Internet potential.But Awesomeminer is also superior in use for mining, you can try it.

### Reply 10:
I am a bit paranoid when it comes to my gears, I don't think using online websites that have direct access to your miners is a good idea, broadcasting the IP address of your router, the IP addresses, and login username/password for every single miner is something I am not willing to do.My setup is rather simple, I use Anydesk and Remote desktop (Anydesk is recommended for beginners, don't use TeamViewer because after continuous access they will think you are using it for a ""Business"" and will block your access for a few hours unless you buy their expensive Business plan) to access a PC on site which is on the same network as the miners, the PC has AwesomeMiner installed which I find to be the most reliable management software, AwesomeMiner is FULL of features, I probably only use 20% of its functions.I set a few rules to automate the farm likeIf the temp is > x > pause/reboot the miner and send me an email.if the hardware errors are above and the miner uptime is <n time > send me an email.if the hashrate is below average for more than 5 mins, reboot and send me an emailand the list goes on, basically it would do anything you would do manually if you were sitting there watching the <rest of post truncated>

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mining rigs"",
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  },
  {
    ""hardware_name"": ""modem"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miners"",
    ""hardware_is_owned"": true
  }
]"
11351,"Date: 2023-09
Topic: Avalon 116 pro75 not working in high performance
### Original post:
Miner <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':30596,'Remote <truncated> Blocks':6,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1204920.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[3168] <truncated> LW[3123828] MH[4 11 3] HW[18] DH[28.163%] Temp[35] TMax[73] TAvg[65] Fan1[6174] Fan2[6185] Fan3[6177] Fan4[6188] FanR[84%] Vo[306] PS[0 1211 1224 204 2505 1224 2765] PLL0[13012 0 1 907] PLL1[12052 6 10 1852] PLL2[12339 4 11 1566] GHSspd[42033.98] DHspd[36.343%] GHSmm[66154.59] GHSavg[42404.64] WU[592385.96] Freq[396.04] Led[0] MGHS[14077.51 14110.82 14216.31] MTmax[73 70 70] MTavg[65 64 65] TA[360] Core[A3201] PING[123] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[390 408 428 448] SF1[390 408 428 448] SF2[390 408 428 448] PVT_T0[ 64 68 70 71 68 69 64 70 70 70 72 69 68 73 69 69 70 70 68 70 70 68 69 70 64 70 71 69 69 64 64 69 72 66 70 63 65 68 70 68 66 65 62 66 67 67 69 64 65 65 68 68 66 66 64 68 6<rest of post truncated>

### Reply 1:
The temps looks fine, have you change the work mode under pool configuration? If it set to normal mode the high performance mode will not be trigger but if it set to high performamce mode it should work.I don't see any reason why it does not work would you mind to try aging you can use FMS tool to do aging.Download it on Canaan support here <link>

### Reply 2:
Can you provide me aging fms code

### Reply 3:
I have upgraded the firmware also but in vain please helpMiner <truncated> <truncated> <truncated> <truncated> <truncated> 5m':7114845.18,'MHS <truncated> <truncated> <truncated> Failures':0,'Local Work':525,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1238200.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[102] <truncated> LW[55836] MH[0 0 0] HW[0] DH[0.000%] Temp[32] TMax[68] TAvg[60] Fan1[5200] Fan2[5200] Fan3[5203] Fan4[5178] FanR[72%] Vo[306] PS[0 1211 1224 202 2483 1224 2705] PLL0[11052 48 153 2667] PLL1[9471 110 295 4044] PLL2[9774 104 303 3739] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[22475.10] WU[313973.58] Freq[0.00] Led[0] MGHS[6200.03 8008.37 8266.71] MTmax[68 66 67] MTavg[61 60 60] TA[360] Core[A3201] PING[131] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[390 408 428 448] SF1[390 408 428 448] SF2[390 408 428 448] PVT_T0[ 60 64 65 67 64 64 59 66 65 65 67 65 64 68 64 65 67 67 65 66 66 64 65 67 61 66 66 65 65 61 60 65 68 62 66 59 62 64 66 6<rest of post truncated>

### Reply 4:
The above log is under high performance but its hashing like normal mode not more than 40 hash

### Reply 5:
You can find the aging button on the FMS tool you might have downloaded the wrong one that does not have an aging button.Try the FMS app 2020.10.29 or if you can't find it you can use this command <truncated> <truncated> but it's weird if the hashrate didn't change. I also noticed the frequency didn't change and the first hashboard is set to low <truncated> 390:408:428:448). Please try aging first it might fix your issue.

### Reply 6:
Thanks i will try and update soon

### Reply 7:
i have applied aging code but its getting worse only hashing 15 ths can it revert back by flashing firmware please help

### Reply 8:
after aging tmax also rises , please <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':3551,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1237808.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[526] <truncated> LW[465209] MH[0 1 0] HW[1] DH[30.225%] Temp[34] TMax[78] TAvg[70] Fan1[6844] Fan2[6841] Fan3[6849] Fan4[6766] FanR[100%] Vo[324] PS[0 1211 1297 248 3219 1296 3582] PLL0[12465 6 1 1448] PLL1[10884 13 17 3006] PLL2[11258 9 9 2644] GHSspd[42274.89] DHspd[36.454%] GHSmm[76502.32] GHSavg[29658.08] WU[414318.61] Freq[457.99] Led[0] MGHS[9178.29 9980.76 10499.03] MTmax[78 77 77] MTavg[70 69 70] TA[360] Core[A3201] PING[120] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[448 468 488 508] SF1[448 468 488 508] SF2[448 468 488 508] PVT_T0[ 70 74 76 78 74 74 69 76 76 75 78 75 73 78 74 75 76 76 74 76 76 74 75 76 69 76 76 75 75 69 69 75 78 72 76 68 71 74 76 74 73 70 67 72 72 72 74 68<rest of post truncated>

### Reply 9:
It's pretty bad it become worst I don't know if the<rest of thread truncated>
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    ""hardware_name"": ""Avalon 116 pro75"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""FMS tool"",
    ""hardware_is_owned"": false
  }
]"
23012,"Date: 2019-07
Topic: S15 - lost IP adress fault/firmware rewrite ?
### Original post:
Hello,After some months my s15 suddently lost the connection and can't connect to it. Cannot find the IP anymore, probably the control board has problems. I'm thinking maybe the firmware got busted and can be rewrited.Is it possible to rewrite the firmware with the SD ? Can some one give some informations or help me get it back to life ?Kind regards!

### Reply 1:
Bitmain is not releasing s15 control board recovery yet. Anyway, can you try to hard reset the miner follow this step below?- Run the miner for 5 minutes- Push the IPreporter/Reset button for 15 to 20 seconds.- Then Release- Wait to the miner to run for 1 minute then try to scan the IP again. Let see if you can find the IP after the factory reset. Also, check the PSU if it's giving enough power if you have multitester you can check the output it should around 12v.

### Reply 2:
After pressing the resert for 15s nothing happenes, the leds remain the same. Fault and green constant on, also the internect connection leds green and yellow are on without blinking. The PSU is ok i checked.

### Reply 3:
There are 3 ways to factory reset the miner how about the IPreporter have you tried it?I will put the link here below so that you can find which reset method is working to s15. Check the method from here ""3 ways to factory reset the miner""If all of them are not working you have to report it to bitmain directly don't touch any hardware related as the suggested above if your miner is under warranty you have to directly report it to bitmain support.

### Reply 4:
@BitMaxzThe third reset method (IP Report button) does not apply with the S15.

### Reply 5:
I'd plug it directly to a computer and do full network scan (as in all 32 bits). But before that you could try plugin it to a dhcp router and see the logs to see if if got an ip assigned.If possible do it with the controller alone, none of the hashboards. But i'm not sure how easy it is to do that with the S15.

### Reply 6:
The S15 control board can be removed, you just have to unscrew those metal rails and pull the hashboards back before you can pull the control board out. Doubt this is necessary in this case however.Sounds like something has shorted on the board, that's usually the only reason to see the fault and normal lights stay continuously solid. If all reset types fail and you still can't get any dhcp request, you'll probably need a new board.I have some brand new S15 control boards in case you are located in the US or Canada, perhaps we can work something out.

","[
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  },
  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""multitester"",
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  {
    ""hardware_name"": ""computer"",
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  },
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    ""hardware_name"": ""dhcp router"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S15 control boards"",
    ""hardware_is_owned"": true
  }
]"
13639,"Date: 2020-01
Topic: Antminer S9 and T9+ Firmware ASICBOOST original hacked , no dev fee hidden
### Original post:
UP : add support for T9+

### Reply 1:
Do you think about sell your source code?

### Reply 2:
i am willing to examine the fw for anyone who has doubts.

### Reply 3:
I see that you have some legitimate , so, i agree to send you one copy of voucher, test it, and send here result, you are ok ?

### Reply 4:
No idea why a Mod would merit a post by someone who is breaking the cgminer license ... sigh ...

### Reply 5:
I swear I am the only one to not break the cgminer license when I released my firmware for free haha...Granted my next release I am going to have to. Well more so I don't have the files to be able to make it open source cuz bitmain

### Reply 6:
Good ,1: I offered to discover my firmware (you refused)2: I said I was using an original Bmminer (you could have confirmed it)3: you are as hard as the stone !!!4: it's not like that you're going to advance science ...Really not good ...Come with me in PM and I prove to you that I'm not a scammer!So before criticizing everything, thank you for questioning you ... you did a lot for the comunity to see what I see on the forum, but it does not give you the right to spit on everyone like his, have apel his RESPECT!Thank you!

### Reply 7:
If you want to pm me your findings I can confirm it for you. My old firmware had it in there and I don't think your scamming personally since we went back and forth about firmware stuff a solid year ago. So I would be more than happy to confirm what you found is true. It's a bit tricky but a few have found it. What merit I hold on these forums is contained pretty much exclusively to the hardware and software section for btc mining so that should help your case.

### Reply 8:
Where's the source code?

### Reply 9:
Some random pm'd me a method of doing it that was using ida and a hex editor which yeah it kind of works I guess but they were not compiling it.

### Reply 10:
Hi, the proof is there, you criticized me without even reading me! it's too bad ...In my first post I say that I do not have the source code for the simple reason that I use a BMMINER of origin! no change !!! therefore, you must ask for the sources at bitmain;)The function of my ""firmware"" or rather ""mod"" is that I apel the function ask by another way ... at least in a few words ...And as Taserz said I'm not a scammer, I help as I stink here!

### Reply 11:
There is a way to patch BMMINER specifically to set fixed frequency and asicboost. Not sure how you can do voltage control increments since it's hardcoded per frequency range.

### Reply 12:
I am a user of brains, currently and I confess that Bitmain is disgusting, currently, in the last S9 they sold from the J Series, they removed a chip, to block the writing of the Nand. Not only did they update the 2019 firmware, but they removed hardware to disable writing on the control board. They sell miners set at high voltages, when they can be more efficient, either by frequency or by voltage. It was the case of miners 12.93 Mhz, set over 9 volts and frequency of 600 Mhz (1450W to 1600 W). I admire the trajectory of kano, but I also congratulate the courage of thierry4wd. I think we shouldn't argue, we are on the same Team!

","[
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  {
    ""hardware_name"": ""cgminer"",
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  },
  {
    ""hardware_name"": ""Bmminer"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""S9"",
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]"
23059,"Date: 2019-08
Topic: Antminer T9+  ,  36038 TH Error
### Original post:
Which firmware is that? It's not stock.Either way, look down to chain 9. Something it's not right.Does a power cycle clear it?-Dave

### Reply 1:
Hi GuysDo you know how solve this issue ? temps & chips are ok<link>

### Reply 2:
Hi DaveIts customs firmware, but i have other T9+ with this firmware and works perfectlyWhat do you mean with... a power cycle clear it?

### Reply 3:
Yeah, full power off. Wait 30 seconds and power on.If chain #9 starts showing the odd numbers again, I would contact the developer of the firmware or revert to stock.Since we can't really know what the custom firmware is doing having you post a log will probably not help much in figuring it out.It becomes a bit more guesswork then looking at the Bitmain logs which everyone who has worked on them over the years more or less knows.-Dave

### Reply 4:
He's probably asking if you have tried turning on and off the device to fix the issue. Sidenote: Is the problem that the realtime hashrate is too high? I haven't really looked into miners much so I couldn't see the problem myself.

","[
  {
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]"
10838,"Date: 2019-08
Topic: Whatsminer M20 is announced and available for pre-order
### Original post:
Pretty sure it is real and they are taking preorders.I may be getting both models to do YouTube videos.I have been taking with them about it.It is 12nm not 7nm which means they may have 1 more upgrade in say six-seven months.Note these will be subject to the trump tax if USA based.

### Reply 1:
This is cool news.As I mentioned in the M10 thread,I might be able to get a demo and write a review for the M20.I will keep you guys posted!

### Reply 2:
I am a bit surprised at how much of an incremental upgrade this is.M10S = 55TH @ 3400wM20 = 58TH @ 3300wConsidering its a new chip the upgrade seems rather marginal

### Reply 3:
the m10 to m20 is huge m10 31th 2300wattsm20 48th 2300wattsbut them10s 55th 3400wattsm20? 58th 3300wattsis not much

### Reply 4:
Yea, then hoping for efficiency modes then the 58T is probably the stronger buy, though both look good.

### Reply 5:
The tax is based on the import date, not the purchase date. So perhaps this could be a gamble that the trade issues will be resolved by then.

### Reply 6:
I'll have more details posted online soon. But I'm sure someone will delete my posts.

### Reply 7:
The expiry for current talks with China will end this month I believe. So it will either have resolution, current 10% tariff rates don't increase to 25%, or 25% added tariff on all Chinese imports.Regardless this batch is priced well. The only issue buyers might face would be MicroBT wanting pull move like they did with the D1 late last year. I wouldn't gamble on COGs and prep for the worst. We're hoping for a good bulk pricing then if tariffs drop that only enhances our buyers positions and savings. Still the skeptic in me doesn't think much will come out of current political powers.

### Reply 8:
I was checking out Pangolin to see when more M10's would be available and to my surprise they had the M20 listed. This miner is only listed on Pangolinminer.com, nothing on the manufacturer website either. Most notably these miners are using 12nm chip size and are available for pre-order Shipping before May 20,2019.The specs has 2 models:48TH/S (+-5%) @ 2300W (+-10%) for $1450 USD Or 58TH/S (+-5%) @ 3300W (+- 10%) for 1500 USDI must say the numbers look great especially the 48TH model. I am kind of surprised they aren't mentioned on any other sites.

### Reply 9:
To me @ the 58THs mark it rather depends on how many chips are used in it vs the M10S.Compared to the M10-31 or 33 the M20-48 is a substantial improvement in speed/power.

### Reply 10:
That's why I mentioned the S model, which doesnt have a low power mode to compare.Personally I think they shouldnt even sell the higher speed version with the last 10TH costing 1000w.

### Reply 11:
I asked for both models to compare.I think we will be going with 10-30 m20 48th short termand maybe 50-100 m20's long term.

### Reply 12:
yeah they are rocking the 12nm at 48th and 2300 watts which will be full speedif they can do efficiency setting on the m20 like the m1021th 1265 watts31th 2300 watts21/31 = .677 x 48th = 32.5th 32.5th at 1265 watts = 39 watts a th on efficient speed48th at 2300 watts = 48 watts a thon the 12nmwhat this means is very good for the 48th modelwho know what the 58th model will do on lower settingand still the 7nm in 6-8 monthsI am liking these builders.

### Reply 13:
Exciting but interesting. I think I'm in fanactic's camp with the model numbering and spec seems like a m10s. Odd to have a 10th difference for 50USD. Maybe they don't want to pay my consulting fee for marketing, then they can get here free along with some import/export advice. Then I still hope the 48th unit has a efficiency mode nice though to have some product coming and put pressure on for competition. I'll probably always favor the bold.Edit: looking at pricing it'll still be far under Innosilicon T3 with duties/tariffs.

### Reply 14:
on paper the m20 at 48th looks very good for those with higher power cost.the m20 58th is a question mark? as to whom it fits.I guess the bull miner. If it costs 50 usd more and coins go up in price it is a lot of hash for 50 usd.

### Reply 15:
I have heard some rumors it may end April 1 who knows.

### Reply 16:
So, the M20 miner that is listed on the pango website is a pre-order, but the MicroBT factory has not even set a price yet, nor have they officially announced the product. I highly doubt the miner will be available for mass production until end of May or beginning of June. People will receive ""demo"" or ""review"" miners, sure, but any company right now pre-selling the M20 is doing so outside of MicroBT's knowledge or approval.

### Reply 17:
Well if that's the case than pangolin is sacrificing their reputation. It's where we source, no matter who we email or wechat with on mircobt's end. So far.

### Reply 18:
Curious if the same promo code works on these as well? Maybe save us $50 a miner or something. If we have to pay the tarif<rest of thread truncated>
","[
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  {
    ""hardware_name"": ""M10"",
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  },
  {
    ""hardware_name"": ""M10S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon T3"",
    ""hardware_is_owned"": false
  }
]"
23849,"Date: 2022-01
Topic: S19pro online but not hashing!
### Original post:
hello guys seams like noobs getting hunted with million of issues XDlong story short one of my miners died 3 weeks ago and I checked everything and find out that the PS was dead I ordered a new one and I was happy to find someone shipping cross the oceans to the desert and when I replaced my powersupply my miner can't hash! I do a research some of the S17 answers is there is a fan not working.is there any recommended fans for the s19pro am running and if there is another issue let me <truncated> 23:27:52 [chain 0]2021-06-24 23:27:52 0x0000 11 4A F9 9D D6 1F AE 26 8A 99 95 71 AF AD F5 EF 2021-06-24 23:27:52 0x0010 8E C8 52 86 54 4B F5 92 19 87 11 41 6E 99 8F AA 2021-06-24 23:27:52 0x0020 D3 9F 6A 80 DB 86 27 71 21 FD 2D 54 D9 F0 FC E4 2021-06-24 23:27:52 0x0030 C8 55 BC C0 B9 A7 A4 C2 C0 DD 66 08 B0 98 F4 F0 2021-06-24 23:27:52 0x0040 D0 37 33 55 62 93 C2 60 61 61 FF FF FF FF FF FF 2021-06-24 23:27:52 0x0050 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 2021-06-24 23:27:52 0x0060 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 2021-06-24 23:27:52 0x0070 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 2021-06-24 23:27:52 0x0080 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 2021-0<rest of post truncated>

### Reply 1:
Code:2021-06-24 23:28:48 power voltage can not meet the target2021-06-24 23:28:50 power voltage can not meet the target2021-06-24 23:28:53 power voltage can not meet the target2021-06-24 23:28:53 Sweep error string = V:1.2021-06-24 23:28:53 ERROR_POWER_LOST: get power type version failed!2021-06-24 23:28:53 stop_mining: get power type version failed!It seems it still a PSU issue, not a fan issue because according to your log it passed the fan check look <truncated> 23:28:00 Fan check passed.But the error above about power voltage, it didn't meet the target or it's not giving enough power from PSU that is why it's not hashing. Try to reconnect the PSU remove them from the board and plug it again and test.

### Reply 2:
Than you for your time, I did what you recommend and still nothing fixed 2 times it's giving no lights while everything is good on the main page of miner NOTE I cut of the electricity to change the plugs with another miner and they work fine, is it might be the control board or the <truncated> <truncated> 00:00:09 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro1970-01-01 00:00:10 This is fix-freq version1970-01-01 00:00:10 Miner compile time: Fri Dec 11 11:23:44 CST 2020 type: Antminer S19 Pro1970-01-01 00:00:10 commit version: 1821c90 2020-11-16 16:05:37, build by: jenkins 2020-12-11 11:35:431970-01-01 00:00:10 opt_multi_version = 11970-01-01 00:00:10 opt_bitmain_ab = 11970-01-01 00:00:10 mid_auto_gen = 01970-01-01 00:00:10 <truncated> = 01970-01-01 00:00:10 mmap fpga_mem_addr_hal = <truncated> 00:00:10 HASH_ON_PLUG V9 = 0x71970-01-01 00:00:10 Note: front fan is power on!1970-01-01 00:00:10 Note: rear fan is power on!1970-01-01 00:00:10 start the http log.1970-01-01 00:00:10 <link> start ret=01970-01-01 00:00:10 start listen on 6060 ...1970-01-01 00:00:10 load machine NBP1901 conf1970-01-01 00:00:10 machine : NBP1901 1970-01-01 00:00:10 chain_num 4, chain_d<rest of post truncated>

### Reply 3:
Do you have an extra s19 pro? If you have, try to use it to test the PSU. If you don't have one, try to physically check the control board and check the power terminal and plug if there are burn parts. If there are no burn parts under the socket or the wire try to flash it with the latest s19 pro firmware from Bitmain and make sure you directly plug your miner on the wall outlet. I'm not 100% sure if it can solve the problem but just try it. If nothing works then you have a defective PSU and it needs to replace with a working PSU.What do you mean about this? Is that the data cable from the control board to hashboard?

### Reply 4:
<truncated> node 0, pgdat c0b3c040, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf0000 s19916 r8192 d21044 u49152pcpu-alloc: s19916 r8192 d21044 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 209672K/245760K available (6317K kernel code, 243K rwdata, 1932K rodata, 1024K init, 232K bss, 19704K reserved, 16384K cma-reserved, 0K highmem)Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xffc00000 - 0xfff00000 (3072 kB) vmalloc : 0xcf800000 - 0xff800000 ( 768 MB) lowmem : 0xc0000000 - 0xcf000000 ( 240 MB) pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) modules : 0xbf000000 - 0xbfe00000 ( 14 MB) .text : 0xc0008000 - 0xc09<rest of thread truncated>
","[
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    ""hardware_name"": ""PS (Power Supply)"",
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  },
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    ""hardware_name"": ""S19pro"",
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  },
  {
    ""hardware_name"": ""S17"",
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  },
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    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
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    ""hardware_name"": ""data cable"",
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]"
10802,"Date: 2019-03
Topic: AvalonMiner 921 released - 20 TH/s @ 1800W
### Original post:
As it does not really fit into the 7nm thread here I make new topic.Specs:Avalon A92120TH/s -5% ~+10%1800Watt +0% <truncated> x A3206 7nm Asics-5C - 30CIt can be assumed that they are planning to reach target specs discussed here <link> with A941 Miner.For now we have the A921 with ~85Watt/TH acc to spec. Market release of this device is end of September.

### Reply 1:
Just received Miner,short testing shows we can get following at the wall values: (I have to point out that we tested them very shortly ~1-2hours)voltage -2 = ~1830Watt @20TH/svoltate 0 = ~2040 @21,1TH/smore testing to follow asap.

### Reply 2:
Is that a new canaan psu as well? 2k watts?

### Reply 3:
Very cool, guys

### Reply 4:
I don't have this one I stopped ordering all miners since I think I may be billed quite a bit for the last few I purchased.I don't know if or when but I could owe trump tax.I think I beat the deadline one 1 unit by 1 day the t2turbo.I think on the m10 I owe more then 450 usd.So for now I wait to see if I get billed.

### Reply 5:
Checked your purchase, the T2T is safe from new tariffs by about 20 days but DHL didn't charge the 2.6%, which was returned to you being a solo buy. Rough estimate on that unit is about $40 in duties is all.

### Reply 6:
Looks great Foo (not Phil), let us know the outcome.These only run on 220 correct, or am I confusing them with a different miner?

### Reply 7:
Also, whats the packing and sealing like? Standard Canaan with blue ""tape"" and foam?

### Reply 8:
That's no Canaan PSU, it's a PSU from one of PSU factory suppliers.We never received a single Avalon Miner in blue foil. Just standard Canaan box with 2 foam pieces.They changed the fan from 120mm to 135 or 140mm also the fans pulls now up to 4,9Amps and has no standard 4pin plug but a squared 4 pin plug. The changed fan increased also the max db to like 80-85db.

### Reply 9:
so, thats 90+w/TH at best...Great innovation late 2016's... Pitty its end of 2018 already...

### Reply 10:
lol, I can't read....it was Foo, not you.

### Reply 11:
Happens. Looking closer I see it has 10 pcie jacks vs 8 on the 841

### Reply 12:
Yea this unit is very disappointing to say the least. The hell are they doing. Get that 30th @ 2000w miner out (which I highly doubt will be those numbers after seeing this one). At the price point it's basically better to buy 2 841's with power supply than one of these for the same price.. lol

### Reply 13:
The 921 in a cold room with a 24 hour test may be better the 20 than 1800 watts.Need to see what it does over a day in a cold space.Frankly the M10 is the best of the new gear as of now.But it is not cheap.Avalon 841 on a down clock can do 900 watts and 10000 ghWhich is 1800 watts 20th if you have 2.Blokforge has 841s in stock. At 425 each.After trump tax this 921 costs more and does close to the same.

### Reply 14:
I think they used to ship them out in something like that before mid 2017. All my hardware has shown up the way you describe, but I remember some people wondering about this in the past.With your tests, what was the ambient temperature?? Since the 8 series we have seen that ambient temperature does play a big factor in their power consumption. That may have contributed to the numbers being higher than people would hope for. As you pointed out the timeframe is short it would be nice to get a 24 hour test done. With the 921 does the voltage offset work; or are you punching that in the command line?I wouldn't count out the 941, this is generally the model that meets or exceeds specs, but has shown is very temperature dependent. Also in the long run with that .09 decrease in W/TH over the 841(based on review data) could be the difference between profit and loss. I do still stand by my if you can wait to see what the 941 does then do that.

### Reply 15:
<link> waiting for specs and prices

### Reply 16:
Cool,but I would be very careful with that model name with the US customers. If you know what I mean.

### Reply 17:
I don't know why Canaan insists on this side bullshit. We don't care about a lower power unit, that's what a 841 is for. We want the 30th at 2000watts unit like was mentioned before this came out, efficiency is better than just lower power usage what the hell.

### Reply 18:
Low power is fine if it's more efficient, correct?

### Reply 19:
Sounds truly like a nice idea, I agree that there is also the tribute side in the name.

### Reply 20:
Well luckily for us home miners they are bringing that efficiency out in smaller models as well. I'd love to throw a couple of these beasty 2000w+ units in my garage year round, it's not as easy to move them into the house in winter to offset my heating bill.Now I'm eagerly awaiting both announcements. Considering the only other company that announced something like this is looking more like vaporware every day, all eyes are back on Canaan for me atm.

### Reply 21:
From wha<rest of thread truncated>
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    ""hardware_name"": ""Canaan PSU"",
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]"
16393,"Date: 2023-01
Topic: New York Prohibition of Mining Law
### Original post:
A few days ago, I came across news about a law that was passed in New York, with the aim of prohibiting Bitcoin mining in that state.<link> only mining companies that use 100% renewable energy will be authorized.What impact do you think this will have on mining?

### Reply 1:
None. Zero. Zip. Nada.Except for the ones that were obvious scams all the new mining setups coming into NY were 100% renewable. Also, in NY since power is more or less fungible, all you have to do is BUY from a green supplier not have green power coming in. It's also a ploy to get some money to redevelop a lot of old power plants that the miners wanted to take over and run. Putting aside everything else. You have a bunch of locations that could host mining now as-is BUT they are at the edge of being useful. A few more years and they will not be. But, if you leave them empty you can then gut and rebuild into something newer and better. It's get a little revenue today vs more revenue tomorrow.The other side of that is the 'bird in hand' argument. Will you find someone to redevelop? How long will that take? And so on.But since there were no pending permits anyway, BTC is hovering at $16k, and so on it's not a big deal.Also, and this is a personal big one, it's tough to fight the states like Texas where miners get paid more then they would make mining to shut down during hot days to conserve power. <link> You can't fight it when the state government takes money out of its citizens pock<rest of post truncated>

### Reply 2:
This observation is interesting! I had no idea that new companies are already exploring these types of options.However, do you think that the companies that build ASICs will improve the equipment, in order to be more efficient?I still think miner builder companies should improve hardware to consume less power. Something they are not doing yet, in my opinion.

### Reply 3:
It's been discussed before in other places on the forum but miners are building more efficient BUT more powerful miners. Every new generation of miners use less power to generate more hashes. BUT, they then cram in more chips to make each miner more powerful. Made up numbers but: If in the last generation you needed 100 chips at 10 watts each to generate X amount of hashes but in the newer generation you need 80 chips at 8 watts each to generate the same X amount of hashes you could in theory make a miner just as fast as the old one but that uses a lot less power because you would be using less chips that are more efficient.But what they do is make a miner that is much faster then the old generation by putting more of the more efficient using even more power but then now generate X+50% hashes. Great for big miners in big data centers where power and noise does not matter. And well, the small home / hobby miners are out of luck. To put it bluntly, for now, WE ARE NOT THEIR TARGET CUSTOMERS. There are obvious exceptions, there are people here who are running larger farms and such, but are the exception.Gone are the days of the R4 and things like it, for now anyway.-Dave

### Reply 4:
That does not work to lower power use. Simple economics.

### Reply 5:
Cough, <truncated> gas powerplant in Buffalo?TW's Lake Mariner hydro powerplant facility that somehow is just 91% renewable... Mining is not a fixed game where you need 100Exahashes and that's it, you obtain those with 10 times less power and you have reduced consumption.The consumption is influenced by the revenue, if Bitcoin drops to $100 you will have miners earning $90 000 a day and they obviously won't be able to spend more than that on power. If it goes to $100k you have a revenue of $90 million a day so you could easily spend half of that on your power bill and still get a huge profit.No matter how energy efficient those new ASICs will be, long term if the revenue per day for miners grows ten times so will their power consumption with just a few percentages off.

### Reply 6:
Which was why I said that all the NEW ones were committed to buying / using 100% renewable.There have been no new applications that I have seen for months, probably due to the BTC price drop, but the last few that were proposed were either supposed to be 100% renewable or buying renewable.Or to put it another way, it's good PR for the government 'we are making NY green' while actually not doing much of anything.Kind of like after all the insurance companies were forcing all the safety improvements on cars, and the the government stepped in and made anti-lock brakes mandatory. After most car insurance companies were jacking up the rates of cars that did not have them into the stratosphere. -Dave

### Reply 7:
Define new, Digihost bought that gas plant at the end of the last year and it has barely come online for a few months after acquiring permits, TW Lake Mariner facility is not even completed and runs at 10% capacity.A slight difference between applica<rest of thread truncated>
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    ""hardware_name"": ""R4"",
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    ""hardware_name"": ""new ASICs"",
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]"
22907,"Date: 2019-03
Topic: Antminer S9 Braiins OS Chain ID 3 Line is missing but Hashpower from all Lines
### Original post:
Hello minersToday i have tested the Braiins OS on my Antminer S9 13.5Th.First try with SD Card no problems and 100% working like it should.I can save about 1 Amp, fantastic. GrinAfter a restart one CHAIN ID Line is missing.Restart, reflash nothing helped.I have tested Bitmain Firmware again and it works 100% with 100% Chips and 100% Hashpower.Back to Braiins OS and again one Line is missing but the Hashpower is from 3 Lines.Anybody any Idea? HuhThanks.<link>

### Reply 1:
I can not get what you are pointing at from the image it seems the stats of the miner is fine. I don't have much knowledge about this OS for s9 miner so I think much better to bring this issue from Braiin OS thread from here <link>

### Reply 2:
After multiple Restart and rest of the pool data the missing line is back.<link>

### Reply 3:
Thanks BitMaxz for the help.In the second picture you can see all three hash boards. In the first picture you only can see two bit in the summary all hash power from three boards. My problem solved from all one but I will understand the problem.

","[
  {
    ""hardware_name"": ""Antminer S9 13.5Th"",
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    ""hardware_is_owned"": false,
    ""hardware_name"": ""SD Card""
  },
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    ""hardware_name"": ""Bitmain Firmware"",
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16386,"Date: 2022-12
Topic: [Guide / review] solo-mining, Nicehash/MiningRigRentals, how to choose solo pool
### Original post:
Hello mining friends I would like to tell you about my experiences, adventures and impressions I have made in the last weeks/months regarding solo mining. This should serve as a guide but also as a review for like-minded people who are facing similar problems and are looking for answers or want to share their own experiences. It is not meant to be a manual, as it would go beyond the scope, although I will elaborate on some points I consider worth mentioning. If you want to learn more about the technologies presented here, you are of course free to do your own research and, if you have any questions feel free to create new posts of your own about them. For the following thread I would like to emphasize that all impressions I describe in the course are purely subjective, they show my personal opinion and this does not imply that it has to correspond to the fact or other views. I also refer exclusively and without exception always to Bitcoin, as I do not care about alt-/shitcoins and thus do not support them.1) Requirements --> hash power for SHA-256 .An indispensable condition for solo mining is -who would have thought it- hash power! Either you own your own hardware like ASIC miners<rest of post truncated>

### Reply 1:
*reserved*

### Reply 2:
I'm not at all sure why you need to publicly post a list of all the current miner usernames on the pool and how that is on topic.Certainly it would help bots and attackers - so I'd assume that's not your reason.Please remove it.

### Reply 3:
Correct. That's exactly what I wrote in the first thread:Your pool has not yet found a block in ""solo"" mode and therefore the important note, one should not compare apples with oranges and to correctly interpret the place in the ranking.

### Reply 4:
Well you are comparing apples with apples.The servers are the same for all mining, all the same work generation software, all the same that's found thousands of blocks that I've paid.Heck I even paid out all the outstanding dust balances above 10000 sat last year.The only differences now, is who KDB assigns who should get the reward.This original reward management is in the public git for pplns, but I've simply added and tested an account type flag, pplns or solo, that decides who's balance is affected when a block is found.Running the payout is the same as before also, but only one person will show up being owed.Since I am the developer of all the software involved in this, even if it did screw up (which it wont), it's no issue to resolve either, it does not automatically send BTC anywhere, there is one manual step to simply tell it to generate the transaction, verify it and report what it is doing.No doubt you'll add that having a manual step is a risk, but since most normal pools out there have had the opposite happen, where BTC was lost due to issues with their fully automatic payouts, and I never have lost any, I prefer that one manual step.

### Reply 5:
Thanks for sharing your point of view. That's why I said I personally don't like potential profit going to a ""third"" party first. I wouldn't want to watch my >6.25 BTC profit get transferred to you, and shortly after read the message here on the board or somewhere else on a newspaper that you had an accident and died or something else bad happened to you and thus I never get my coins because they are parked on your bitcoin address.There is no need for a ""middleman"", there is no need for a ""bank"" in between, if it can be done in another way --> directly. And that is exactly what the Coinbase transaction allows. That's why I can't recommend anyone to mine at a pool that doesn't allow them to use their own Bitcoin address for a direct (via coinbase transaction) potential reward payout. Ultimately, each miner has the choice to decide what they prefer.

### Reply 6:
100% this. It has always been the issue, not just with solo pools but any pool that is run by just 1 person.CAN something horrible happen to all the operators working @ ViaBTC / prohashing / wherever. Yes, of course. But, it's a lot less likely then it happening to a pool with just one person running it. On the flip side of that, if something does go wrong @ kano.is we all know who to blame, so there is that, there would be nothing we could do about it but we would know who to blame. The other side is also, if something does go wrong with other larger pools they MIGHT be able to send the BTC out of their own pockets. Antpool may suck for several reasons, but if they do loose your funds they can replace them out of pocket. Will they is a different story.-Dave

### Reply 7:
I did respond to your comment and explained why I don't recommend solo miners to mine on your pool. And I also underlined that everyone is free to form their own opinion and decide where they want to mine. I said that to date no solo miner has mined a block on your poolFeel free to a<rest of thread truncated>
","[
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13605,"Date: 2019-01
Topic: ""Optiminer"" package for Antminer S9/T9?
### Original post:
Has anyone had any experience with the ""Optiminer"" optimization software for the Antminer S9 / T9 series? This is different from the Optiminer Zcash/Equihash GPU miner.I wasn't able to find much information about the software online, except that it is produced by LSJ, LLC. I think it's supposed to make the miners more power efficient.Any thoughts?

### Reply 1:
Use original firmware made by the company who created the miner you use.Modified/Hacked firmware is not verified to or guaranteed to find blocks by any of those who create them.If you lose a block due to their hacks or lose shares due to their hacks, their answer is ""bad luck, you lose""If you want to run some other than original firmware, then go mine solo to your own wallet, and don't risk these firmware hacks on mining pools and affect the other miners on the pool.

### Reply 2:
That is good advice, kano. I might be testing this software on some miners, mining solo so it wouldn't affect any other miners on a pool if it were to withhold block solves.I just wanted to see if anyone had used this specific software before, since there seems to be so little information about it online.

### Reply 3:
Or use an opensource one like I did for the community XD

### Reply 4:
Doesn't mean it will find blocks ...... or that you'll guarantee that if they lose a block due to your code then you'll make up for it ...

","[
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23230,"Date: 2020-03
Topic: Have my S9 miners been hacked?
### Original post:
I use Awesome Miner software to manage my miners. About 2 months ago I started using the Awesome Miner Antminer Firmware. I tuned them myself - lowered voltages to 8.5V and set frequencies to 762, then, based on number of chips on a board that were not running in their happy zone, I upped voltage by 0.1 and lowered the frequency. After getting the boards so that they were at a point were most of the chips were in their happy zone, I then reduced to individual chip frequencies until I got them very consistently into their happy green zone. For the last month, my 8 S9s (S9s: S9, S9i, S9j - 13.5 to 14.5TH/s), have been running fine. Then today when I came home from work they were all only running for a few minutes each, so I check them and they are running very badly - MANY chips at 0 and red, missing whole boards, all of them only getting up to around a third or less of their regular hash rate. The firmware is set to restart them when there are more than 5 X's on a chain - so they were just setting there restarting themselves every few minutes.Something appears to have changed around noon or so yesterday. I mine with Nicehash - and they are paying out ever 4 hours. I am generally, as<rest of post truncated>

### Reply 1:
don't mine at nicehash.try viabtc and see if it works better.

### Reply 2:
The choice of pool can cause chips to be marked as X's in the web interface of the miner, chains to drop, and chain status (in the miner web interface tab ""Miner Status"") to go from Healthy down to Slowed and cause the miner to restart? I have never had this problem with any pool including Nicehash and I've been mining with them for 2 years.

### Reply 3:
Nicehash is red hot right now and they may be switching you around a lot.Which can screw up a miner.you could try to set a level in the password so you dont switch as much.but going to viabtc and setting to pps+ is a better way to see if you have an issue.as nicehash could have a problem due to a hot bs coin.you may have a voltage sag issue if you have a lot of xxx and oooo.the voltage needs to be high enough for an apw3+ like 205 to 240 is better then 190 to 210

### Reply 4:
+1So, i have same problem, the problem come by Nicehash ! arround 12 - 14h nicehash have big problem with SHA256ASICBOOST pool ! if you want buy hash, showing only arroun 1 - 2PH ready ... is big problem ! i thinks server is down...Now, all is return to normal... is only temporary problem

### Reply 5:
If you suspected that it was a virus trying to steal your hash rate or you doubt that you've been hacked then start to investigate.If it was a virus or you've been hack can you try to flash it with SD card to clean up the NAND program. The procedure can be found here ""How to flash antminer s9 through SD card""After the flashing is done. Flash it again with the latest firmware(A firmware with SSH disabled or SSH port closed) through WebGUI. Now, after the flashing is done try to run it again and monitor the difference but use the ViaBTC pool first to test. Update here and let's see if you've been hacked or not.

### Reply 6:
I have the #xnsub option enabled with Nicehash. My miner fans are all running well plus I have additional large fans pulling 3200CFM across 12 miners (4 are L3+/++ units). Also, miner's firmware is set to target a temp of 76 and if the logs from Awesome Miners are correct (and I believe they are) the temps never went above this.I will try ckpool too when I can. I'll probably turn on one breaker - which runs 2 miners - I can point one at viaBTC and one at ckpool - maybe, depends on my testing, I only have one SD card to try booting from at the moment, but I guess I could try them before booting up from the SD card.Thanks!

### Reply 7:
so are they all set to viabtc or to ckpool as i ask?do that first lets say one half to ckpool and one half to viabtc.once you did that.boot each one three times.then run the gear and monitor it.see what happens.if it sucks let us know.if it works let us know.so far every thing we suggest you simply disagree with us.stop that. just follow these ideas .there are actual reasons we suggest it.if i was at you place i could sit down and explain to you each and every reason.but on the internet it is simply too time consuming.I have yet to see a screen shot of any of this gear set to via btc or to ckpool.also three boots tends to clear a lot of bullshit out of the ram in the controllers.good luck

### Reply 8:
just took three deep breaths.i am calm.thanks for suggestion to chill.

### Reply 9:
Voltage was tested at just a little over 240V. My power has thus far been very steady. I have a commercial power run just for my miners.I have a LOT of xxx, I think sss too (I'm not home now where I can look, but pretty sure about the sss). Even hash boards not showing up. All of my miners were running fine - all hash boards were active - no lost chips on any of them. Until bang - now they all lo<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9 miners"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Awesome Miner software"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Awesome Miner Antminer Firmware"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APW3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+/++ units"",
    ""hardware_is_owned"": true
  }
]"
13744,"Date: 2022-02
Topic: Stratum (or getblocktemplate) Mining Example
### Original post:
I'm currently trying to write some mining software. Nothing special, just for the fun of it and by doing so getting a thoroughly understanding of the protocol(s).I started with the get block template but, yeah, turns out to be too complicated (especially the construction of the coinbase was a dumper...) so I reverted to Stratum (v1). If anyone has a good example of constructing a block from a block template, please be my guest.While decoding the messages and doing the hash calculations I had some issues with little vs big endian, but managed to get them right eventually using examples I found on the internet. However for the last step (submitting a share) I did not found any example at all. :-(basically, what I am looking for is an example (can be just a log of an existing miner) that states:Given this mining notification: (some json)And receiving this set_difficulty: (some json)And eventually trying those Nonce and Extranonce2Your software should submit this: (some json)I have no special mining equipment, so mining takes forever. I was able to submit one share after running the program for a couple of houres, it was rejected. Propably because I had the difficulty wrong, now it is <rest of post truncated>

### Reply 1:
Stratum is for pooled mining, so the whole documentation of it is in the pool thread:<link>

### Reply 2:
I'm also learning these new techniques and getting results through trial and error. I think the process is more important than the result. If you have other problems, could you discuss with me? I hope you can give me a chance to study together. You can join me through MDClub.<link>

","[
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]"
16346,"Date: 2022-10
Topic: Bitmain S19 XP Fan CFM
### Original post:
Looking into the feasibility of piping miner exhaust into existing HVAC system during the winter. Does anyone know what the CFM generated by the S19XP on the exhaust side?I checked the Bitmain site but did not see it listed in the specs.<link> issues supplementing heating costs with miner exhaust?Thanks,Ron

### Reply 1:
the 2 fans blow out between 300 to 450 cfm depends on how fast they blow.the answer as to is it possible is yes.here is a direct link to the fan on bitmain.<link> are variations on the delta's which do 200 to 250 cfm each depend on which one.so you will have 2 exhausting so max will be 400 to 450 cfm and if they blow slower due to a cool room they will drop to 300cfm or so.this will help you setup exhaust<link> note I have no connection to the seller on ebayhere is a link to some delta fans the 120mm by 38 mm are the size on s19's<link> slower one<link> faster one<link> is likely to be this one or a clone of it since delta are costly now

### Reply 2:
Thanks for the great information! According to the Farmer's Almanac, we're supposed to have an exceptionally cold winter this year. Will be nice to know Bitcoin will be keeping us warm and cozy this winter.Perhaps I'll figure out a way to cook our meals with it during the summer Thanks once again,Ron

","[
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    ""hardware_name"": ""Bitmain S19 XP"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""delta fans"",
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]"
10898,"Date: 2020-07
Topic: Project QikFury - prototype v1 Bitfury H-Boards in action
### Original post:
good job bro 1BTC i buy

### Reply 1:
nicely hacked together! Its amazing how simple the bitfury design is that without the need to convert 12V->0.9V the board is practically empty save for a few capacitors and the chips

### Reply 2:
Brilliant:)

### Reply 3:
Will make a few for sale, once chips are in stock. Right now there are no chips in stock

### Reply 4:
these ASICs are highly integrated . The only PITA is debugging a really dead chip in the chain.

### Reply 5:
Thanks man

### Reply 6:
Ohh Nice!

### Reply 7:
Nice going Goxed!Interested when you are ready to sell. Will you possibly sell it as a kit for the end user to do the soldering themselves?I'm no EE but I can float a chip.

### Reply 8:
PERFECT! NOTHING TO SAY!

### Reply 9:
I could sell it as a kit. (PCB + chips + assembled regulator+ 8 heatsinks). Mounted PCBs will cost ~ 60-80USD more.Lets see when the chips are back in stock.

### Reply 10:
Badass - Where can you get the blank PCBs?

### Reply 11:
so what does this do ?

### Reply 12:
Love this hack. Let me know if you make some for sale. I have a couple non-working boards I could try this on.

### Reply 13:
Well I had a few empty slots to fill in my starter kit, and a month and half ago H-boards went OOS, and the only thing one could buy were chips. This is the result.

### Reply 14:
So do you want to use chips from non-working h-boards on a new H-board?

### Reply 15:
I got them manufactured through advancedcircuits as well as oshpark. The oshpark pcb's look dandy but are 0.5ounce Cu. If chips are available for sale in Feb, I will get more boards made.

### Reply 16:
thats the idea - but have you seen that there is someone doing a group buy for a reel of BF chips?<link>

### Reply 17:
Very impressive.Are these compatible with the original M-boards?

### Reply 18:
Awesome work!

### Reply 19:
yes, they are compatible with the original M-boards.

### Reply 20:
Pretty awesome!

### Reply 21:
Thanks for this great work Goxed!

### Reply 22:
thanks

### Reply 23:
thanks man

### Reply 24:
thanks

### Reply 25:
Did it really only take 2 hours to solder the chips on? That's awesome! Let me know if you can make some boards for me I have BITFURY chips coming soon, any day now supposedly.

### Reply 26:
How did you order them?How much per chip?

### Reply 27:
This was just a fun project to quickly cobble together working h-boards using Bitfury chips and blank h-boards. Each board uses a modded ISL8225M eval board regulator (0.84V), 16 chips and 16 capacitors and was hand soldered in 2hr.

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    ""hardware_name"": ""ASICs"",
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    ""hardware_name"": ""PCB"",
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    ""hardware_name"": ""assembled regulator"",
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    ""hardware_name"": ""heatsinks"",
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    ""hardware_name"": ""blank PCBs"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""non-working boards"",
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  {
    ""hardware_name"": ""starter kit"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""H-boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""M-boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ISL8225M eval board regulator"",
    ""hardware_is_owned"": true
  }
]"
11157,"Date: 2022-05
Topic: New Whatsminer with Flashing Red Alert
### Original post:
Hi all, I have been mining ETH via GPUs for a while but I recently purchased my first ASIC. It's a Whatsminer M31S and I downloaded the Whatsminer Tool from MicroBT to discover the IP and set up pool etc.Issue is, the red Alert LED is flashing and the machine does not appear when I scan for IP address and / or click the IP Found button. So at present I have a machine running I can't see on my network.Anyone else come across this issue on a brand new Whatsminer?

### Reply 1:
Would you mind to try disassembling the unit and unplug all hashboard and replug PSU cables from the controller?Then update here if the miner is detected through the Ip scanner or whatsminer tool. If it's detected and you still experience some issue copy the API logs and paste it here make sure to put them inside the insert tag.

### Reply 2:
did you solve the problem? I have the same problem too.

### Reply 3:
I am currently having the same problem. Any help or info is appreciated.

### Reply 4:
If it's only the red flashing light but it still hashing normally you can ignore the red light because it's very common in whatsminer based on their old complaints that you can found here below- <link> if your miner can't able to detect the IP maybe the firmware of your miner is corrupted you can try to flash your miner through SD card all firmware for this unit you can download them here below- <link> make sure to check the control board first for the exact firmware/board model.

### Reply 5:
Update on my issue:It turned out to be a network connectivity issue. Once my internet connection was ok the red light went off and I was able to connect to the device and get it running. Thanks for the help and suggestions.

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    ""hardware_name"": ""Whatsminer Tool"",
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  },
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    ""hardware_name"": ""hashboard"",
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  },
  {
    ""hardware_name"": ""PSU cables"",
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  {
    ""hardware_name"": ""controller"",
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  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""control board"",
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]"
4012,"Date: 2022-02
Topic: [CLOSED]#KN-R001 3TH/s Neptune KnCMiner, ord. #K27-BFYW-014072, PAID
### Original post:
Awesome! Thanks James!

### Reply 1:
Mail sent Thanks James - Enjoy your vacation!

### Reply 2:
Just an update on the status of the spreadsheet. In progress!James

### Reply 3:
Hello everyone!Thought I would tell you all that since the holidays are approaching that I will be busy (as most of you will be) with family and other holiday activities, so the communication will be touch and go until the New Year has passed (and my birthday on Jan. 4th.)Here is me wishing you all a HAPPY HOLIDAY <truncated> Be looking out for the next GB!

### Reply 4:
Any updates? Spreadsheet?Cheers!

### Reply 5:
Now that all the holiday stuff is over and my birthday has passed, I will be getting back to work. I am still sorting out the spreadsheet info, will get back to you on this info ASAP.Thanks,James

### Reply 6:
Thanks JamesKeep us updated, people start to get little uneasy when there are no updates.Happy birthday, hope you have many more.

### Reply 7:
You bet, and thanks!

### Reply 8:
Any updates?

### Reply 9:
I'm hoping it's just a late payment, But Solarwindmining.com is now suspended. James, could you reassure everyone?

### Reply 10:
Yea, the payment snuck up on me while I was attending to other issues, I am working on resolving the payment with the hosting service.Just a quick update, here is a copy of a reply to a PM sent to me by one of the Neptune GB members:

### Reply 11:
emphasis mine. yes you should. so happy about this reversal of policy. shares should be proportional to actual hashrate not expectedyay let's go wasp

### Reply 12:
what ever happened to <truncated> was he a scammer

### Reply 13:
Me?A scammer?Never! I'm still here and I have some things in the works.Read from the following quotes to get caught up on what's happening.

### Reply 14:
Hi James,Where are you posting these updates?the site is down & I haven't seen any updates in the wordpress:<link>

### Reply 15:
They were posted in the official SWMC thread. If you click on the ""quote:"" link above the quote you'll be redirected there.

### Reply 16:
James,I don't mean to sound harsh but we aren't investors in your business, we are your customers. We have no stake in the success of SWMC, just a stake in the success of this particular group buy. It is great that you have some long term plans but they are unrelated to us. It has been well over a month and you haven't even a completed list of shares. It seems like your priorities are on the long term expensive projects, instead of on your current revenue generating customers.The first thing you need to do is get the share situation fixed and at the very least a spreadsheet up. Put whatever shares you know on there and send out a link to it. The missing shareholders can then send their TXid and sign a message from their payment wallet to settle disputes/confirm ownership. It will honestly take less time than it took for you to write than long post about what you want in a website.I am an experienced web developer and small business owner and I hate to say it but your wish list is unrealistic for a friend of business associate to do part time. It would take a full-time developer months to custom build everything you described. Once the development is done, managing servers and datab<rest of post truncated>

### Reply 17:
Added to my watch list

### Reply 18:
Appreciate the advice!Just so you have a more complete understanding, I'd like to address some of your comments. It's not that I don't have any coding skills, it's that I haven't really done much coding for many years and allot of things have changed since then. I am just WAY behind. Managed web hosting and web design is a big part of what my friend's business does. That's why I asked him to help with this. A limited partnership with my friend/business partner was formed prior to starting my business and it is his facility that will host the mining equipment. He is fully on board and very excited about working with The SWMC and entering the Bitcoin world. Maybe I should have said that his web design team will be working on the website and they will be giving it just as much attention as they would with any other client, so it won't just be a part-time effort. And we will be contracting others who have more knowledge about Bitcoin and related code to advise and perform some of the needed work. I already have a domain name so that is taken care of. I will bring up your wordpress suggestion to him because that sounds like a good idea.As far as this information not being relevant to th<rest of post truncated>

### Reply 19:
Ok, here is the spreadsheet for the GB. Sorry that it is not completed, but I will be updating it with correct information as I filter through the file from database hell. I don't know what happened, but the information is hard to sort through. Some purchases are referenced multiple times, but don't easily correlate with o<rest of thread truncated>
","[
  {
    ""hardware_name"": ""3TH/s Neptune KnCMiner"",
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]"
23010,"Date: 2019-07
Topic: preparing to order miners
### Original post:
hi guys new miner here,i've been lucky enough that i've scrimped together approximated $20,000 which im planning to put into purchasing miners.I've found an industrial unit where they've included power usage into the rental price per month and i've explicitly stated i will be running at least 10 machines which are 12v 3400w consumption to which the landlord said he would be happy with that usage being priced into the unit rent.what im really looking for now is some advice on what i will need to get the best results from mining. Im struggling to understand how im going to distribute the power safely (the unit has 3-phase power) but im scared incase i plug too many machines in and cause an overload or a fire.The other thing was I've seen people using power distribution units to plug multiple miners into.If any one is running a s17 set up could they give me their experience on the best way to power the units and if there are any tricks or tips to help optimise them?thanks

### Reply 1:
Contact an electrician ask them to review the power setup / wiring. Just because the landlord says it can be done doesn't mean anything.For distribution of power for the miners I'd also ask the electrician, it really depends on the buildings wiring and the distribution of outlets to breakers. For instance if you have a 15A breaker and it's wired for 120v you're not going to have a fun time.

### Reply 2:
<link> is the outlet thats in the unit. i was expecting that maybe i would need to wire my own breakers in the unit and run power from those breakers?i believe its a standard british 3phase power outlet with 230v am i wrong?edit the breaker has 100A on it some im guessing its a 230v 3phase with 100amp.

### Reply 3:
Sounds like all you need is a 3 phase pdu for 230v. Make sure you don't exceed 80%, in this case 80a total consumption.I have never seen a British 3 phase outlet, but i imagine they sell pdus for those over there.

","[
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    ""hardware_name"": ""12v 3400w consumption machines"",
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]"
16311,"Date: 2022-08
Topic: WHERE TO BUY WHATSMINER M30S++
### Original post:
Hello guys!I'm searching the cheapest website to buy the Whatsminer M30S++ and I think the best one I found is the official website (<link> All distribuitors I found are more expensive than the official website. However, I see everybody purchases the Asics with distributors which is more expensive than the official website (<link> Is there something that I'm missing? is it possible to buy the Asic here? <link> or do we need distributors as Alibaba or others to buy an Asic Miner?Thank you!

### Reply 1:
You can buy it from <link> they are legitOfficial manufacturer site is <link>

### Reply 2:
Yes, whatsminer.net is legit and official distributor of microbt. There is also www.whatsminer.com, directly affiliated to microbt, but all the hardware seems to be sold out in there.Don't let the high prices deter you if you really want to buy. Most of the scam sites post cheaper prices to act as bait to scam people. I wouldn't exclusively trust vendors from sites like Alibaba.You can also chat with offordscott

### Reply 3:
Hello, I am a mining equipment supplier in China, I will answer your question. Because under normal circumstances, manufacturers such as Whatsminer or Antminer will invite us to place an order to buy a futures mining machine a few months before the production of a mining machine. When we complete the procurement, they will arrange the production tasks according to our procurement situation, so that their risk will be much smaller. So all they produced were bought by us, and there would be no inventory on his official website.and for M30s ++ 106t 34W Our offer is $7500Welcome to contact me XDXD

### Reply 4:
Friend, I will explain to you why the prices on the official website are so cheap. Because the machines on the official website are all pre-booked, and buyers are required to pay in advance, the price of the machine at this time cannot be the same as the actual price of the machine after a few months or even a year. This cannot be done, and you also know the price of the machine With the fluctuation of the currency price is great. This kind of action on the official website of Whatsminer will allow him to take a very low risk, so the price of the machine you bought from others, that is, the spot price must be higher than the price you see on the official website now, which is reasonable Case

### Reply 5:
How the reseller can offer lower price? The price difference on the 30s++ 5800$ between whatsminer.net (cheap) vs microbt.com (official and expensive)

### Reply 6:
I could be wrong, but it's most likely because the price reflected on Microbt is the old price that hasn't been updated for some time. If you check microbt (which redirects to whatsminer.com) the miners are sold out, unlike in whatminer.net where they are still availableJust to give you the perspective of how the price can change. This is from the time lockdowns just started bitting hard.

### Reply 7:
<link>

### Reply 8:
M30++ $5800??? thatz wont happen``````be carefully the scram!!!!!!!!!

### Reply 9:
You may contact me for buying M30S++ if you are from INDIA. We are seller in ASIC since 8 Years. We are Crypto Forum

### Reply 10:
A one-day-old newbie account who claims that they have been selling for 8 years, yet the forum domain isn't even 2 years old. Yeah sure, what could possibly go wrong?How do I send the money for the M30++ sir?

### Reply 11:
May 6, 2022 PricesM30S++ 104T8040$M30S++ 106T 8400$

### Reply 12:
The official website is the most expensive, and many of them are pre-orders. . It will take a few months or a long time for it to arrive. .I usually go to a Chinese dealer for a second phone or a new phone. Friends I met when I went to China. .discount price. . And fast shipping. .Here is his twitter: AIexander FUa good person. Very honest.

### Reply 13:
In this forum, there are many people who believe in zeusbtc's services, why don't you try to contact?

### Reply 14:
""second phone or new phone""Um cryptocoin miners are NOT the same thing as a phone.... Then there is the fact that China does not allow their citizens to buy miners and resell them...

### Reply 15:
Interesting; right now, July 22, 2022, on <link> it's:M30S++ 110T$4,590.00M30S+ 100T$3,200.00That's like 50% off. I'm sure it correlates with the Bitcoin <> USD exchange rate, since mining $20k Bitcoin gives you 70% less money to pay your electricity bill than mining $60k Bitcoin.On the other hand, buying one now at such a big discount and either starting to mine when the price rises again, or selling it when the prices go back to $8k-$10k for such a machine, might be a pretty good investment.

### Reply 16:
Yes you can buy from <link> now stock is available in it. I have checked other sites like alibaba, amazon, it is showing more price in comparison to this site.

### Reply 17:
I am looking forward to buying one of these asic Miners but the problem is the shipping fee for me, this day<rest of thread truncated>
","[
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]"
23369,"Date: 2020-12
Topic: Help me get started with mining
### Original post:
Hello, i'm one of the guys trying to start up a little added passive income by mining from home with electricity included in the rent.I was thinking about a rather small setup of 2 to 4 S9 that i would cool via immersion cooling in 1 or 2 miner masters and maybe upgrade to 2 s17 if i find a bargain after some time.Now, i know some of you want to rush in judging me for practically stealing electricity, but with the burned skin and ripped muscles and broken bones and low wages from my terrible industry job i don't care anymore and my power consumtion fortunately can't be traced here. Also, as my landlord refuses to grant access adequate heating, i would welcome a heat source that generates money, instead of the fan heater that actually consumer more energy than at least one of the setups i am planning right now.The main concern i have in starting up mining, though, is my personal safety and the simple prospect to possibly burn down my appartement.The reason for this is, that permanently taking a power output of around 3300w (two 1600w S9 + 100w miner master) from a regular continental european circuit that maxes out at around 3600w would seem rather unsafe to me.I have three circuits<rest of post truncated>

### Reply 1:
Not really, well it's a tricky question, with immersion cooling you could save some power while on the other hand, you could actually use more power compared to air-cooling.As far as the hash boards go, they don't care if they are in the water or anywhere else, whichever volts and frequency there is, the same power consumption will apply on all cooling methods, the only direct cut you get will come from the 2 fans on the S9, or the 4 fans on the 17 series, the average consumption of these fans is 5amps at 12v, assuming they run at 100% which is 60w each, so NFW figure of 50 seems perfect since it's unlikely that the fans will go full blast.On the other hand, you are going to need to move the cooling liquid, if the power required by the pump and/or the radiator fan is < the total fans consumption then you win, vice versa, you lose, so if you use a pump that consumes 200w and use it to cool a single S9, then well, air-cooling wins, if the same pumps can run 10 S9s, then immersion cooling wins, I have no clue about which pumps are available and their power consumptions, I am simply showing you the proper way of doing the math.You should also consider the initial cost for immersion coo<rest of post truncated>

### Reply 2:
Like i've written. I do not pay electricity, which makes it easy for me.As for the initial cost, when i just contacted suppliers on Alibaba, they jacket up the price, so as of right now, i am going to build my own immersion cooling system. Without ghettoing it, i would just pay around 150 for the parts of the immersion cooling, including transformator oil and 130 for one S9 plus around 20 for cables and other things. 430 in total, with an expected hashrate of minimum 22 th/s, i have a daily income of 2,77 for the current price of the coin.That's a little bit over five months until i paid off the initial investment and after that no variable costs to produce the output.I'm not sure what you would consider a good business model, but i'm right now learning at uni that, for example, investments in renewable energy that only break even after 7 to 9 years and turn in an interest of 4 to 5% interest rate over the whole runtime of the project are considered good investments.The question regarding the power consumption is, as i wrote in the opening, really just a safety concern.

### Reply 3:
ASIC-based miners are very different from typical electronics. They do NOT like to be ran cold. The chips and circuits were designed to run at fairly high temps and running below said temps usually makes them unstable. Keep chip temps at 50C or higher.World wide, the standard rule of thumb for running a heavily loaded circuit 24x7 is to de-rate it by 20% so a 30A socket is good for 24A continuous load.

### Reply 4:
Ooowww, god damned! And i thought i got it planned out so well. But thank you for the insight, really.Where does all the advertising about higher power efficiency from immersion cooling come from?I guess, i will have to take a week just to test out the best pump/cooling liquid configuration, then.Yeah, i guess i will stick to that. Interestingly enough, i should be well under that load with my setup, so i'm glad it looks like i still have some room for overclocking. I will still have to do some calculations, though. Weird thing is, that when researching all of this, it turned out that i have allready stressed one of my curcuits WELL beyond the recomendet 3600w without knowing. I suppose this only went well, because of the high voltage that continental european circuits suppot. Still, i am very very anxious about even comming close to the official <truncated> again.

### Reply 5:
I've never seen that claim regarding <rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner master"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""transformator oil"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC-based miners"",
    ""hardware_is_owned"": false
  }
]"
23340,"Date: 2020-10
Topic: 2 AntMiner T9+ Red Fault Light, no Mining Connection
### Original post:
In this part of the <truncated> Asic[02]=0.00000 Asic[03]=0.00000 Asic[04]=0.00000 Asic[05]=0.00000 Asic[06]=0.00000 Asic[07]=0.00000 <truncated> Asic[10]=0.00000 Asic[11]=0.00000 Asic[12]=0.00000 Asic[13]=0.00000 Asic[14]=0.00000 Asic[15]=0.00000 <truncated> Asic[18]=0.00000It shows that the miner can't find any chips on all 3 hashboards, and it seems like one of the 3 hashboards is missing because the kernel log only shows 6 chains (1,2,8,9,10,11) when it should show <truncated> kernel log suggests that your miner is dead, but this also can be a power related issue, what PSU are you using and what is the voltage?

### Reply 1:
<truncated> 2 separate AntMiner T9+ that displays red fault light and no pool connection.The kernel log is practically identical between the AntMiners and shown below, not sure what the issue is. Also upgraded to latest firmware but the problem persists.Thank you for your time.System OverviewCode:Miner Type Antminer T9+Hostname antMinerModel GNU/LinuxHardware Version Kernel Version Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018File System Version Wed Jul 31 16:20:36 CST 2019Logic Version V3.57BMminer Version Uptime 17Load Average 0.00, 0.03, 0.04Kernel LogCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map <rest of post truncated>

### Reply 2:
If you are using the latest firmware from Bitmain try to run the miner at low power mode. You can find it on miners configuration under ""work mode"".Then try to run again lets if it fixes your issue.Also, try to reset the miner to the factory default by following these methods below.- <link> us see if there are changes in the logs after resetting it.

### Reply 3:
That's a good point, but actually, if he indeed flashed the latest firmware then he is stuck with it, in other words, migrating to another firmware for testing purposes won't be as easy because Bitmain did pretty ""well"" locking these miners with the latest firmware.I am also eager to hear from OP, I still think it's either a power-related issue or the miner is dead ( all hash boards are dead), I hope the former is the case.

","[
  {
    ""hardware_name"": ""AntMiner T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
24042,"Date: 2022-11
Topic: ANTMINER S9 MESSAGE LOW HASHRATE CHIP
### Original post:
Hello everyone, it often happens that hiveos gives me the error: ""Auto-tune found a low hashrate chip, fixing""in the last 2 days it has happened to me 3 times. I have no overclocking overclocking and the temperatures are also quite low.is it a common problem of the S9 or are they the first signs of failure of some board?

### Reply 1:
As far as I can know, the main task of autotune is to make the hash rate higher and energy consumption lower (auto-tuning keeps the consumption indicated in the config file).<link>

### Reply 2:
If it's auto-tuning, then your miner is pushing the miner to consume more power to produce more hash rate. So it means it's overclocking, but the problem is if you are still using the stock s9 PSU, it can't provide enough power, which can lead to some issues like your issue.So better manually set the power depending on what PSU you are using.

### Reply 3:
i have 1800w power supply and set the OC to 1140w, i don't think the problem is due to that.

### Reply 4:
If it's not a PSU, it's a program since you use hiveos with autotune config. Look at the error carefully; the hiveos is fixing it automatically for you don't need to do anything, but if you don't want to see the error, then manually set the frequency under chips config.

### Reply 5:
Still you push the hashrate over the limits from the manufacturer, that are there for a reason. The reason is that not all chips can take a higher hash raste. So if you dont want this error you need to lower you limit. Maybe try 1100 watts.

### Reply 6:
now it's 6 days that I no longer give the error.

","[
  {
    ""hardware_name"": ""ANTMINER S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1800w power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""stock s9 PSU"",
    ""hardware_is_owned"": false
  }
]"
16233,"Date: 2022-03
Topic: recycle miners exhaust with mini wind turbine
### Original post:
so I was thinking can how many mines exhaust would it take to push a wind turbine that is 200 watts. would it be better to combine all of them in to one port?

### Reply 1:
So you are planning to recycle the hot air from miners and generate free energy from your mini turbine? Such a good idea.It is just like the same as reusing the waste heat from ASICminer.I don't know if one miner could spin a mini wind turbine but if you have many ASIC machines combining them into one exhaust duct maybe it can be without temp issue from your miners.Why not do some experiment and update here I search on Google it seems no one tried it yet.

### Reply 2:
so lets say he blends the miners into a pipe. <truncated> | | | | miner minerthis pipe could do<link> blows about 450 cfmso 2 with 450 + 450 could exhale maybe 800 cfmcan a 12 inch duct directed at a turbine give decent power?i think 4 s17 and 2 y vent stacked could run a turbine

### Reply 3:
If you want to use the kinetic energy from the fans: you're wasting energy. It doesn't come for free, you have to put in more power than you take out. It's more efficient to reduce the power to the cooling fans.If you want to use the thermal energy from the miners: low temperature heat isn't very useful other than for space heating.

### Reply 4:
The fans will have to spin regardless, you can't run an S17 without 4 fans attached, the cfm phill gave about represents 100% fan speed, so he will be getting anywhere from 250 to 450 cfm (S17 will hardly run cool with fans below 50% unless it's placed in a very cold room), but your statement is true if OP intentionally runs the miner's fans at higher speeds just to spin the turbine.I don't think the idea is all that bad, but the problem would be the hot air you push into the turbine, will the turbine run fine at 70c or anything close to that? also, the pressure will fall drastically the further it goes, so I don't think a few S17s will run a turbine at full speed, I also doubt anyone here or elsewhere has an exact answer to your question, you will have to go through a trial and error process, it's an interesting idea nonetheless.

### Reply 5:
I'm pretty sure Loyce is right on this one, though. The system would be creating energy out of nothing if the fans would run at the same speed and same power input with or without turbine.In other words: the turbine applies force in the opposite direction, obstructing the airflow of the fans to be able to run a generator and convert kinetic to electric energy. This means with the same power going to the fans, they will run slower. Or you increase fan voltage to keep same airflow to the hashboard + turn the turbine. As you can easily see, let's say you have to add 100W of power to the fans to run the turbine and keep the same fan RPM as without turbine, due to inefficiencies and friction you will get less than 100W of electricity out of the turbine.Otherwise you'd be creating energy out of thin air; closely related to 'perpetual motion' machines.If you were not to add any extra power to the fans and the turbine would still turn + the miner wouldn't overheat, you'd be better off just running the fans at that RPM without the turbine in the back since it would be much easier to run the fans and they would consume much less energy. You can't get more energy out of the system than what y<rest of post truncated>

### Reply 6:
It is more like how a dynamo or an altenator works, far from perpetual motion concept, when you place a light on bicycle and a let the wheels induce enough power via the dynami, the lights will turn on, there is no free energy in this concept, it is a simple conversion of energy, similar to OP's idea.Of course, I would not call this a very effienct way of creating energy, but miners fan have a minumum speed they run at depending on the room temp, if the miner gets too cold the software will increase the voltage to keep the miner hot enough which will increase the overall power consumption, so if you are in a cold place you might very well use all the resistance you get from pushing the exaust through the turbine to help keep the miner warm without having to increase the voltage.On the other hand, if the turbine creates enough resistance that forces the miner to run at a higher speed that leads to more loss of energy than otherwise the voltage increace would cause -- a loss of energy in the conversion process will happen.The idea can work at a small scale if the maths are done in a perfect way, a bit of energy can be converted and reused, it also needs to be in a cold place where a <rest of post truncated>

### Reply 7:
Dynamo is a good example. When you turn that on, you have to pedal harder to keep the same speed. If there was a way to convert muscle energy into light directly, that would be much better than turning it into more kinetic energy and then using that to power the dynamo. What's happening <rest of thread truncated>
","[
  {
    ""hardware_name"": ""mini wind turbine"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASICminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  }
]"
23996,"Date: 2022-07
Topic: whatsminer m20 error 542
### Original post:
how can i fix error 542 ( reading chip id error) for one of my hashboards?<link>

### Reply 1:
It seems that one of your hashboard has a dead ASIC chip I don't know much about this unit but there is a guide from ZeusBTC that I think will help you to repair hashboard. Check this link <link>

### Reply 2:
Hi, in Whatsminer's hash board, the error code ""542"" means that the number of chips of your SM2 board is incomplete, and the chips of hash board need to be checked and repaired.

","[
  {
    ""hardware_name"": ""Whatsminer M20"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SM2 board"",
    ""hardware_is_owned"": false
  }
]"
13648,"Date: 2020-04
Topic: New s9k firmware
### Original post:
To mods not sure if it belongs under hardware or software please move if you want to move.Note mods put it in software. ThanksI am Yet to test it.direct link to download it<link> go to page link here if you want <link>

### Reply 1:
phil have you tested this new firmware ? my S9k runs the default firmware it came with and there seem to be no issues what so ever so far so i see no reason to risk trying a new firmware, unless there is an improvement in terms of temps of hashrate then I will try it as well, please let me know.

### Reply 2:
i have four s9k. two run good two drop out.i am going to clifton njbe there thurs or fri.i am going to up grade one of the the two shitty s9ks with this firmware. i will post results fri or sat.

### Reply 3:
I know this patches the way to backdoor it. I haven't been able to confirm other claims they make in it. I am leaning on it's a hotfix disguised haha.

### Reply 4:
That is code word for they patched the exploit used to flash aftermarket firmware. If you flash to this you will need to SD card flash to downgrade for aftermarket firmware when a solid beta version is ready. For myself this will be once the auto-tune 17 series goes live we will start to work on it.@MikeyThis does fix some funky temp readings as I stated in the telegram chat. I completely forgot about this until mid conversation.

### Reply 5:
Phill have you tried the new firmware on any of your S9ks ? I am about to pull the trigger on it, not that I am having any issues but there is one thing that seems to annoy me much which is the temp-reading on these gears.Looking at the temp column, there are 2 temps (numbers) showing, the smaller number is what awesome miner reports which also seems logical judging by the average temp of the other S9 models that are located in the same place, the one to the right is externally high and just unrealistic showing temps of over 80 degrees, I don't know what those two different numbers are supposed to mean, but they just annoy the hell out of me sometimes .I have a feeling that these two points you quoted have to do with the issue I am trying to describe here, I am just worried that the firmware might cause problems and I won't be able to revert easily, so please let me know, if you haven't upgraded i'll do it and report back.

### Reply 6:
I had to do this firmware as I had weird temps it did fix the issues.

### Reply 7:
Yup temp reading now look reasonable, unlike how they were with the stock firmware, I told you those did not seem logical and there must be something wrong, I know there is no way any chip would be running at 85 degrees when the rest run at as low as 40c, not sure what was the problem but the new firmware release seems to have fixed it, i also have a few S9k coming in will flash the new firmware before even running at the stock firmware.Confirmed. Thanks phill

### Reply 8:
So I managed to get an image file from Bitmain to reset you device. Which i have done back to June 2019. I ran virsh's signature remover to assist there. Now I need to find a firmware that will work on this C5 controller board.All I am trying to do is underclock it and drop fan speeds.Is there any firmware for the S9k/SE models?

### Reply 9:
Sadly not, both AwesomeMiner and Asic.to (Vnish) don't seem to have any near future plans of making firmware for these two models, BraiinOs is no different, and I am not aware of any other developers whom I would trust.

","[
  {
    ""hardware_name"": ""S9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""C5 controller board"",
    ""hardware_is_owned"": true
  }
]"
16373,"Date: 2022-11
Topic: Building Your Own ASIC Miner? Yes You Can!
### Original post:
Hi there!Recently i bought two S19 Pros and ended up blowing the PSU on one of them which lead me to open it up and replace some mosfets to fix it.While i was at it i decided to give the rest of the miner a clean so i dove in and began doing that. While in the process of cleaning i took a note of the components inside on the main hash boards and the control board.I have a friend in china who used to be a business partner of my cousin and she now works for a ASIC miner distributor company via alibaba. I got in touch with her to talk about the making of these machines to get some more insight.Now in the two hour long conversation i learned quite a bit about it and i will be sharing a few of the things i learned.The reason its almost impossible to buy miners straight from bitmain or other mining companies is because they look for high profits rather than customer satisfaction, there are underground bids which take place between large distributors and the highest bidding company gets the cake. This happens weeks before the miners are released on their website for purchase.Cutting to the chase. The distributor company that my friend works in used to be a PCB manufacturing company. They <rest of post truncated>

### Reply 1:
Can Anyone help my find the BM1398 BM1398BB datasheet please, I have an Idea!

### Reply 2:
^^ Does not exist outside of Bitmain. The s9 chip data sheets are the last that BM released to the public.

### Reply 3:
@mellosoftMaybe find the maintenance manual and reverse-engineer it with the manual and inspecting an actual miner? Zeusbtc.com might have the manual. It's worth a while to ask them and check through their website.EDIT: I found this guide --> <link>

### Reply 4:
I would like to build my own Bitcoin Mining system with AMD . : )

### Reply 5:
Um you'd better read the pinned post at the top here, mainly point-3.

### Reply 6:
For short it's no, here's <truncated> integrated circuits, or ASICs, are circuits that are tailored to a certain application. The logic gates are connected in such a way that they can process data in a specific fashion, as the name implies. What's the best way to get them? You can't, as far as I know, because the makers haven't placed it up for sale on ebay or Amazon. Instead, they were utilised in tandem to build circuits and offer them as minors in pre-configured configurations. Is it possible for you to construct one on your own? Yes, but not in a straightforward manner! To begin, you must understand how to programme FPGAs (Field Programmable Gate Arrays). It's a semiconductor made up of Arrays of Programmable logic Gates, as the name implies.You can programme the gates to do a certain computation if you like. (An aha256 hashcode is calculated in bitcoin). The result will be a chip that is extremely efficient in terms of power usage and cost. Then you should place an order for your chip with a business for production, for which you will have to pay a large sum of money. So, to make your order cost-effective, you need order thousands of them! So, unless you want to invest a large<rest of post truncated>

### Reply 7:
Well, of course you can if you can get all the parts, design a board yourself, and build it.For example that's basically what the Compac F from GekkoScience is. It's a custom board that uses one BM1397 chip, which is the one used in the S17 miner.Here's the main component: <link> of course, most people won't have the skills, time, or desire to do all that work, so they just buy the miner pre-built by someone else.

### Reply 8:
Yeah i do not think you are crazy to come up with this idea.Even i was thinking the samething back in last year NOV 2021. It is possible to clone a PSB and the we can start with the S19 Pro. I was in china more than 7 years i can speak the language and move on the project .i would like to work with someone would like to gang up with me. and even i can manage to get some second hand control boards for cloning . and the second hand chips for the first prototype virsion . if anyone interested to work together . i would love to work on this project. i think we need a good electronics guy with Circuit drawing skills .my whats App (0086 185 2251 0643 )

","[
  {
    ""hardware_name"": ""S19 Pros"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""mosfets"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""main hash boards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""BM1398"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1398BB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s9 chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitcoin Mining system with AMD"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FPGAs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""BM1397 chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chips"",
    ""hardware_is_owned"": false
  }
]"
16441,"Date: 2023-03
Topic: Bitcoin mine in 21st centuries! Revolution of new generation
### Original post:
Initially I was sore afraid that I lose my investment and audacity of bitcoin extension to the worldwide economy but readings widens our insights on projects profound and validity of development, I came cross this mining project in Pennsylvania as new bitcoin mine nuclear-powered and it's show that bitcoin will replace banking system, mega financial institutions and government employment schemes. Bitcoin in 21st centuries will staunch the world with new possibilities and digital financial freedom.A joint venture with Cumulus Coin, LLC. has brought the first nuclear-powered Bitcoin mine online in <truncated> has announced roughly half of its nuclear-powered Nautilus Cryptomine has come online. The mining facility, a joint venture with Cumulus Coin, LLC., derives its energy wholly from the 2.5 GW Susquehanna nuclear generation station in Pennsylvania.The full operation will amount to 50 MW and 1.9 EH/s, with an option for Terawulf to add an additional 50 MW of bitcoin mining capacity, which the Company plans to deploy in future phases, according to apress release.Check out the source of findings;<link> is really amazing and in lots more this days the project of bitcoin keep spreading<rest of post truncated>

### Reply 1:
Interesting article.What does it mean that it will have a mining pool? His 16,000 of TeraWulfs owned miners will sell power for mining, as the article says lowest price in the industry, $0.02/kWh for a five-year period.This is good news and new sources for mining bitcoins which seem to be inexhaustible.It will be interesting to watch the market in that moment.

","[
  {
    ""hardware_name"": ""TeraWulfs owned miners"",
    ""hardware_is_owned"": true
  }
]"
16540,"Date: 2023-06
Topic: WIFI on Antminer S5
### Original post:
Will running WIFI on an Antminer S5 cause a decrease bitcoin production? I was looking at using a Linksys EA3500-NP configured as a wireless bridge.

### Reply 1:
Only if the WiFi provide unstable or very slow connection. But in first place, Antminer S5 is very old and not profitable on most circumstances.That device provide LAN port, why don't you use that instead?

### Reply 2:
Unstable wifi can cause the miner to stop mining but if you can keep it stable and low ping then it won't affect your mining shares.About the Linksys EA3500-NP, it looks like a router but if it supports a wireless bridge then you can connect it through wifi.Why did you choose this router instead of buying wifi extender with an ethernet port?

### Reply 3:
You'd have to have electricity cheaper than 0.001$/kwH to avoid the loss, and it's hard to run a profitable business with the Antminer S5.Yes, you can, but wired connections are more reliable than wireless ones due to less exposure to noise or the possibility of signal loss. Yes, the EA3500-NP will work as a wireless bridge, but I doubt the profitability of the project.

### Reply 4:
For the life of me I cant understand running an s5 why not run a L3+ set it to nicehash which will pay in btc.I run an L3+ as a space heater. set to 400 mh vs 500 mh it burns 565 watts. it earns 80 cents a day.the s-5 earns under 10 cents a day.pretend power is free. the L3+ earns at least seven times the coin.

","[
  {
    ""hardware_name"": ""Antminer S5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Linksys EA3500-NP"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": true
  }
]"
13767,"Date: 2022-04
Topic: T17e Braiins SD Firmware Update won't work
### Original post:
Hi all,I tried updating to Braiins via the NAND SD loader, but now nothing works, including any network connection and factory SD firmware update. I have attached a startup log from the serial port; is there anything I can do to get the control board functional <truncated> SPL 2016.03-g8728fee00a (Dec 05 2020 - 17:42:30)Trying to boot from NANDU-Boot 2016.03-gcaca2524a4 (Dec 11 2020 - 16:58:19 +0000)Model: Antminer S17 Miner Control BoardBoard: Xilinx ZynqDRAM: ECC disabled 256 MiBNAND: 256 MiBMMC: sdhci@e0100000: 0In: serial@e0000000Out: serial@e0000000Err: <truncated> Antminer S17 Miner Control BoardBoard: Xilinx ZynqBoot: NANDNet: ZYNQ GEM: e000b000, phyaddr 7, interface rgmii-idPHY is not detectedGEM PHY init failedeth0: <truncated> any key to stop autoboot: 0Copying FIT from NAND flash to RAM...Card did not respond to voltage select!** Bad device mmc 0 **NAND read: device 0 offset 0x300000, size 0x1000001048576 bytes read: OKUncompressed size: 2083859 = 0x1FCC13design filename = <truncated> number = ""7z007sclg225""date = ""2020/12/04""time = ""16:06:03""bytes in bitstream = <truncated> Align buffer at 2100077 to 2100000(swap 1)gpio: pin 37 (gpio 37) value is 1gpio: pin 36 (gpio 36)<rest of post truncated>

### Reply 1:
Looks like you got braiin'd. It's common for people to struggle uninstalling. Try to reinstall it first to uninstall it

### Reply 2:
Try to flash it with SD card firmware from bitmain to bring it back to stock firmware. You can download it from here <link> link below should be the right procedure to revert it back to original firmware.- S17e/T17e/S17+/T17+ miner SD card control board program recovery methodIt's Chinese just translate it to English to understand.

### Reply 3:
Uninstalling BO+ is a pain in the ass really, you will need to use their tool to get rid of it, the support team on telegram however are so professional and helpful, they will guide you through the problem, just post all the details you posted here in the telegram group at <link> can also post in their topic , Artemis3 is pretty active there and he will assist you.

### Reply 4:
Every time I see mikeywith or Phillipma they are helping people with antminers mostly T17 and S17s.. Well done fellas

### Reply 5:
You don't need to install Braiins OS+ to test/use it, people skip reading the docs and involve themselves in unnecessary complications.You can just run it from the sd card, without ever installing, and then just take out the sd card when you don't want it anymore.This is a full OS replacement, its not some cracker group injecting code to cgminer causing mem leaks to crash it while writing eeprom data...Therefore no, you can't just expect a different incompatible OS to just ""install easily"" from within. The manufacturer sd recovery procedure is assuming things that are no longer valid after you decide to install Braiins OS+ to NAND.Its the same as if you decide to install Linux to a laptop, wipe all partitions, and then expect to restore it to windows by just pressing a key at boot. The recovery partition is not there anymore... And with Linux too, you could have avoided the trouble by running it directly from an usb thumbdrive without ever installing it to the machine.Therefore use the provided tool as the documentation <truncated> uninstall is simple to use and works fine. Boot Linux 64 bits and just do./bos-toolbox uninstall ip.ad.re.ssDone.Now go into the miner and from the upgr<rest of post truncated>

### Reply 6:
I followed your advice and was able to uninstall Braiins but now when I try to login to the miner I still have to go through the Braiins portal - not the stock Antminer page. The page just says Network Not Found and if I try to click on the system tab to load Antminer firmware I get a 404 error. Why is Braiins still on my device? (I have a T17+)

### Reply 7:
You always need to clear the browser cache when you change firmware. Usually ctrl shift r.

","[
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    ""hardware_name"": ""Antminer S17 Miner Control Board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Xilinx Zynq"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""NAND"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MMC"",
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  },
  {
    ""hardware_name"": ""SD card"",
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  },
  {
    ""hardware_name"": ""laptop"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""usb thumbdrive"",
    ""hardware_is_owned"": false
  }
]"
16413,"Date: 2023-01
Topic: any USB data hub with 5amp (25W) per usb port?
### Original post:
Does any one know of USB datahub that can provide 5A (25W) per usb port?

### Reply 1:
As far as I am aware the newest version of the GekkoScience hub is the best option for USB Miners.<link>

### Reply 2:
No - sorta...1st: USB-A ports are only rated for continuous current of 750ma although that has been upped to 3.1A for Battery Charging applications, even for BC the connectors are designed with the assumption that the higher current is for a limited time - not 24x7.Can you push more through them? If done with care by making sure that there is air flow over the connectors and you keep an eye on them to catch problems then yes...The ONLY hubs that supported up to 6A from any 1 port was Sidehack's original Gekko hub. They had 3 pairs of ports, each pair fed from a 6A regulator and yes, some folks have pushed then very hard with over 5A from them. Folks also fried connectors by doing that...The latest Gekko hubs now use 1 very large regulator with each port being fed through a 3.2A resettable PTC fuse.In short: If you want to push that much current into a USB device it is far far better to NOT use the USB connector for power and instead directly wire power to the device.

### Reply 3:
I think we need to know first what USB version are we dealing with and what are you connecting?USB-C that for example supports TB4/USB4 can deliver a lot of power (a combination of higher voltage and current) with appropriate PD specifications.

### Reply 4:
I was just seeing what USB hub would be best for Compac F miner if I need to overclock it to the max feasible. Currenlty I ordered<link>

### Reply 5:
That's the best one available for powering the F's and really the only one that will allow you to run the Compac-F to it's true potential. Do read through the Compac-F thread for details on what folks have done with it.

","[
  {
    ""hardware_name"": ""GekkoScience hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB-A ports"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Sidehack's original Gekko hub"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""latest Gekko hubs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB-C"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compac F miner"",
    ""hardware_is_owned"": true
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]"
11269,"Date: 2023-03
Topic: Suck or blow when adding a large external fan to a miner?
### Original post:
I assume most miners have fans on each end, one side blowing in and the other side sucking out. When using an external (much more powerful and more quiet) fan, what considerations could guide the decision to have it blow into or suck out of the miner?My intention is to leave the stock fans on the miner and then blow (or suck) increasing amounts of additional air through it until the stock fans spin at their minimum rpm, or until the external fan is louder than the stock fans, whatever comes first.I got one of these fans, it feels like it can produce at least several times the air flow that my S9J miner requires: (Don't click the link unnecessarily, bloated advertising!): <link> are the specs in a nutshell: It comes with a speed controller and I can print any adaptor needed to make it fit to a miner.Specific questions that crossed my mind are these:1) The external fan might project more noise on the outlet than the inlet side. I tested it, the noise projection seems the same in either direction. Means that from a noise reduction perspective, it does not matter which side of the fan is 'open to the environment' or maybe connected to the noise reducing ducting.2) The fan's ability to <rest of post truncated>

### Reply 1:
you don't stack a fan onto the stock fans. the stock fans will restrict the new fan if they are slower than the new fan.and the new fan will restrict the stock fans if it is weaker.if you have a s19 there are kits to fully remove and bypass the stock fans and have a more powerful new one.

### Reply 2:
You are correct, but I don't know if the air flow restriction and resulting increased energy consumption is significant, considering the overall energy consumption by the miner. And then there's the waiting time to get the fan spoofing device to where I am. Definitely maybe later!I want to keep the stock fans in place to avert any issues when / if the external fan fails, or something in my experimental setup goes wrong.I will also quite likely remove the external fan repeatedly in order to experiment / develop quieter cooling setups with other miners. Regarding 3): Collapsing tubing: I tested it, the tubing tries to shrink in lengths and will tear itself off any insecure attachment, but the lumen does not collapse. One less worry.

### Reply 3:
Turns out you are spot-on.The powerful Phresh fan actually increases the noise levels by spinning up the stock fans to very high speeds. And they seem to excite each other with annoying interference resonance loops.Would it be possible to 'spoof' the controlboard with some small PWM fans that can spin up to say 6000rpm, just until I can get some of the spoofing boards?I suppose I could also leave the stock fans connected to the the control board (but not connected to the miner housing) for now. Just need to fasten them so they don't take off at bootup! Re: Sucking or blowing: Sucking appears much more convenient so far, for 2 reasons:1) the dangerous intake side of the Phresh fan gets covered with the adapter, less risk of fingers ending up in the fan blades2) Exhaust hose is easily attached to the Phresh fan to direct the warm air to where it's needed, therefore no 2nd adapter required.

### Reply 4:
let me find the kit I used.<link> you use braiins you can not worry about the fans at all<link> I used the 8 inch fan as it is a bit cheaper than the infinity and does 735 cfm more than enough<link> spoofers are cheap if you do not want braiinsthere is a down side to doing this if the 8 inch fan fails the miner will overheat

### Reply 5:
The theory is that sucking is better because you don't add the heat of the fan itself. It also tends to attract more dust because its negative pressure for the miner.So i guess it depends in your actual setup. If its well filtered with noise insulated ducts that reach the outside on both ends, i would go with suck. But if its something like no inlet duct or scooping air from the inside, maybe blow is better.Obligatory reference:With the likes of the infinity 8"" you don't need any other fans at all. 800cfm is twice the required volume so it should be fine at 50% or less.PS: I don't like leaving the small fans because they can be forced to generate electricity by the external fan.

### Reply 6:
If the fan fails its basically the same as when one (or more) of the small fans fail. The fw should stop hashing when it overheats, in Braiins OS controlled by the Dangerous value, which you can lower even more.

### Reply 7:
Thanks for that hint, that would be the easiest way to go I suppose.I've just been wondering why Braiins offers free software AND reduced mining fees if using this software. How does that work as a business model (ducking for cover )?

### Reply 8:
I tested that and it works. When turning off all air flow to the miner, the chip temp goes up to 130C and it stops mining, then tries to restart a couple of times, then bl<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9J miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""external fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Phresh fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PWM fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""spoofing boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""8 inch fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""infinity 8\"""",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""small fans"",
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]"
16522,"Date: 2023-06
Topic: Marathon CEO Responds to Why the Miner Tax Plan Won’t Work
### Original post:
What is the tax on mining? Thiel hinted that due to the plans of the presidential administration, a massive outflow of miners from the country could begin. At the same time, the main goal of the tax plan will not be fulfilled, the expert believes. Here is his corresponding remark on this subject, which is given by The Block.In fact, this will lead to a decrease in the amount of green electricity produced. Today, the construction of a solar or wind power plant takes a very long time, because the queue for connection is two years. And Bitcoin miners provide an economic incentive for people in the energy industry.That is, the expert believes that such a tax rate will not only not protect the environment, but will also worsen the situation with it. Yet in the United States, renewable energy sources among miners are in demand. Well, the possible relocation of the owners of ASIC miners to other countries and regions can change what is happening for the worse.

### Reply 1:
I am not really sure how taxation will reduce the green energy production because most of the countries do not levy heavy tolls / sometime zero taxes on the green energy products. Not sure what is the structure in the USA but that has got to be free one. Apart from this, miner and electricity is one of greatest relationship one see because nothing works without that. USA electricity cost is already skyrocketed and with the time it is going to be more than that per unit consumed. The reason is short fall of electricity production due to high consumptions in the countries like California, New York which are main hub of all. Anyways, Miners are not giving much preference to the US. There are number of nations which are already providing green energy with no taxes, fresh environment and much more. So there it is, more ways to do it.

### Reply 2:
Miners are profit driven. If the cost of power + 30% is still less then the base cost of power in some location then it is in another location then all other things being equal (labor, rent, internet costs, insurance, etc.) then miner will mine there.Upstate NY is a prime example. Labor is expensive, but hydro power is cheap, rent is cheap, insurance is average. So even without other intensives a lot of miners moved there.There have been a few posts about Mississippi & Missouri passing bills to help protect miners. But, we are not hearing about miners moving to those locations since the cost of power is only OK at best.There are some remote locations with just about free geothermal power. But there is no good multi-homed reliable high speed internet and good luck getting people to work in the middle of nowhere. -Dave

### Reply 3:
The same way a tax on alcohol in Canada will produce a drought in Egypt!The whole ecosystem has evolved and new players have entered, most of the largest companies don't care about anything else than profits and their shareholders, they will say whatever it takes to protect their business and avoid taxation even if they know they are wrong.Tesla or Enron, Mara or Bitmain no difference.The hashrate distribution and Foundry share might prove otherwise.Second, it doesn't matter how much incentive other countries have, they need the capacity and there are few in the world with enough to spare, and short of Canada and Russia I don't see anyone able to get a huge chunk of what the US has.One of the reasons the whole Salvador mining dream is still a dream two years later.

### Reply 4:
You know how you can actually protect the environment? Minimize the emissions of vehicles, buildings, factories, etc.A blanket bill banning the use of vehicles, buildings, factories and stuff like that will not work, it will either just make people angry or it will cause them to run away fro the jurisdiction. It is the same thing that the EU discovered when it pushed its ""Ban gasoline-powered cars by 2035"" and it got a lot of backlash from auto companies and consumers.

### Reply 5:
All related news, in my opinion, is an attempt by legislators to obtain some subsidies from company owners to help in the electoral process, reducing fees or even imposing zero fees is not the only incentive in this industry, but the prices of electricity, cooling, space rent and surrounding conditions, with obtaining low loans Cost and long repayment terms.A company will not risk taking a loan with high interest in order to establish a mining farm because taxes are low or it will have low electricity. The industry is based on short and medium-term profit. Whenever possible, miners will move mining tools to that area.Green electricity is a media lobby, no one will talk about Big Oil and how they affect the environment because they fund these companies.Arkansas State HouseMontana SenateTexas.....

### Reply 6:
We did that during covid for a while, how did it turned out?No matter how much you would want to protect the coin and mini<rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC miners"",
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]"
13756,"Date: 2022-03
Topic: S17 / S17E / T17+ / T17 custom firmware - Free Download only 1% fee
### Original post:
Hi all, i edited first post, for add S17 / S17pro firmwares, this firmware is compatible with S17 and S17pro models.Is now available, with only 1% devfee ! Please let your comments !!!

### Reply 1:
When I try to install the firmware using the Awesome miner firmware on the S17pro it gives me the message "" no signature "".How can we fix this without having to go to the location :-)

### Reply 2:
you need to go to location.you have to flash an sd card that unlocks the firmware.bring the sd card to the machine unlock firmwarethen burn in new firmware using a pc with downloaded file.op did this with my t17 and my t17e and my t17+if you want to go back to older firmwareunlock the machine with the op's unlock sdthe load firmware with file on your pc.I have delayed testing his s17pro firmware since I have access to no s17's until I drive up to Clifton nj from Howell nj.

### Reply 3:
Ok, So unlocking the firmware (what i did) with an other firmware does not work? I thought by removing the Bitmain firmware the device is unlocked.

### Reply 4:
You can be right but it is not guaranteed. When you sd card flash with this firmware, your machine is unlocked. I tried flashing Vnish back and forth and it worked fine.However, I am not sure if awesome miner unlocks your device. They might even unlock it just to flash their firmware and then lock it so you cannot flash any other firmware. Smart they are...

### Reply 5:
Awesome Miner firmware is nothing but a re-branded version of Vnish firmware, so I highly doubt that they can edit the firmware in such a way, in fact, even the ""unlock"" tool is from Vnish IIRC, with that being said, I was personally able to migrate from Vnish (AowsomeMiner version as well as Asic.to) back to Bitmain and the other way around, this works on S9 as well as T17, I am not sure about the other versions but I can only assume they all are the same.As far as I know, only Bitmain locks your miner, I have only tried Vnish and BO firmware so I can't speak about the other dozen firmware out there, but I have not heard about any other firmware except for Bitmiain's that would lock the miner, of course, absence of evidence isn't evidence of absence.

### Reply 6:
Hi, to my knowledge, only firmware before 2020 can be unlocked by a remote utility, so asicTO utility (works very well) or Awesome miner (also works very well via the command ""Send custom:"" unlock ""to unlock ssh) ...We have also experimented with a bitmain firmware from 2020/04, and the unlocking worked very well with the SD card despite the recommendations, but to be taken with a grain of salt, we only tried the T17e ... You can try it. SD card in this case, you do not risk anything. at worst nothing will happen and you will keep the firmware currently installed. PS: ""my"" SD card file is compatible with all 17 series without exception, and also for all minors with the C43 control card (for exemple : s9k, s9se, Z9/11 and more).Regarding my firmware, try to unlock it with a utility, and try to install my firmware, if that doesn't work you must use the SD card files that I placed at your disposal in the first post, once the firmware is installed, if it does not suit you, no problem to go back (Philipma1957, Favebook, and me will confirm you) it is to say install bitmain, or vnish, or other!Bruru : If you want help, i need screen of your (""System / Overview"") for i understand what fir<rest of post truncated>

### Reply 7:
Hi everyone ! now releasing S17+ firmware with only 1% fee !

### Reply 8:
Hello everyone, I made S17e Custom Firmware, installation is now free and available to everyone!Edited, now ready for T17 / T17+ / T17e / S17 / S17Pro / S17E / S17+ with lowered fee !-----FIRST custom firmware for the Antminer S17e------ Custom Freq : From 30TH, up to 80TH and more (runs in all conditions)- Custom Voltage : From 1500mV to 2050mV- Downclock up to 35 W/TH or better efficiency- Monitoring Voltage / Freq ratio for best efficiency- Fan fixed / auto- Signature disabled / You can restore original firmware at any point- Performance and Efficiency + 15-30% (all ASICs are different)- Working perfectly on all pool, original cgminer- Small DevFee 2% 0.9% ,OVERCLOCK IS AT YOUR OWN RISK !!!This picture are no fees, is normal, is beta before <truncated> <truncated> if your miner is locked by original firmware---1 - Power down your miner2 - Format your micro SD Card as FAT323 - Download this file ( SDX17X ) - intermediate firmware (needed to unlock)4 - Unzip the files, and paste all unzipped files on your SD Card5 - Insert SD Card on miner6 - Power on, and wait until GREEN and RED light start flashing then power down miner7 - Remove SD Card and Power on the miner8 - Now flash Cust<rest of post truncated>

### Reply 9:
T17E firmware is now available

### Reply 10:
Request source code for the miner.As per the cgminer license requirement.

### Reply 11:
Upd<rest of thread truncated>
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    ""hardware_name"": ""S17pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17e"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17e"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17E"",
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]"
11217,"Date: 2022-10
Topic: problem of T17 IMPROVED
### Original post:
For god's sake PLEASE use the code tag to reduce that text wall... The icon is #

### Reply 1:
Hi, I have this T17 improved (with the new heatsinks screwed on) but after about 45 days of use, it suddenly doesn't mine anymore! .some advice ? I had moved it 30 cm and one card turned off, I turned off and restarted and the cards were all off! I removed and reassembled all the parts of the MACHINE BUT NOTHING! Could it be the control board? i also reinstalled the software from bitman (with sd)here is the kernel logthanks has who can help me.Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built<rest of post truncated>

### Reply 2:
ERROR_SOC_INIT most likely a hashboard issue the 3rd hashboard only detects 28 ASICs and the other two hashboard detects 0 ASiC.Try to do Sd card flashing then test and check the logs for changes. If it still the same then try this troubleshooting guide here below.- <link>

### Reply 3:
yeah get some new gear those boards are likely dead.

","[
  {
    ""hardware_name"": ""T17 improved"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""heatsinks"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
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  },
  {
    ""hardware_name"": ""software from bitman"",
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    ""hardware_name"": ""hashboard"",
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    ""hardware_name"": ""ASICs"",
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    ""hardware_name"": ""Sd card"",
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    ""hardware_name"": ""gear"",
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  {
    ""hardware_name"": ""boards"",
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23336,"Date: 2020-09
Topic: How To Overclock Your S9/T9+,T9,R4 To 18TH/s Free.
### Original post:
sooooo, i have a S9 with one broken board (nothing to see, just wond come up anymore). Suppose when i do this, i'll upgrade it to its almost original with 12Th instead of 13.5Now, since i miss one board, can i say the power draw is 1600 watts then? (2/3rd of 23000That would be great, as the bitmain is 1600W...

### Reply 1:
update on running the script skylaker provided on T9+...set my freq using awesome miner through the API access to 675mhz...getting stable 12.2TH chip temps @77-78. running on APW 1600 power supply ex bitmain

### Reply 2:
How to overclock your miner.first, you need using SSH login your miner.Port is 22 ,IP is your miner IP. Username is :Root, Password is :admin(not incloud space)It using an antminer BMminer Bug. if u enable 'Fix Freq' Switch and set Freq to 1 ,Then your miner will runs at 850Freq,S9 can be 17 - 18.5 TH/s hashrate.(PS:miner PSU must more than 2300Watt)T9+ can be 145-15.5 TH/s hashrate (needs 2300W)How to edit?First,login your miner SSH.then edit <truncated> line 96 to 135(Style like this..),and replace to these:Code:echo ""{"" > <truncated> ""\""pools\"" : ["" >> <truncated> ""{"" >> <truncated> ""\""url\"" : <truncated> >> <truncated> ""\""user\"" : <truncated> >> <truncated> ""\""pass\"" : \""${ant_pool1pw}\"""" >> <truncated> ""},"" >> <truncated> ""{"" >> <truncated> ""\""url\"" : <truncated> >> <truncated> ""\""user\"" : <truncated> >> <truncated> ""\""pass\"" : \""${ant_pool2pw}\"""" >> <truncated> ""},"" >> <truncated> ""{"" >> <truncated> ""\""url\"" : <truncated> >> <truncated> ""\""user\"" : <truncated> >> <truncated> ""\""pass\"" : \""${ant_pool3pw}\"""" >> <truncated> ""}"" >> <truncated> ""]"" >> <truncated> "","" >> <truncated> ""\""api-listen\"" : ""true"","" >> <truncated> ""\""api-network\"" : ""true"","" >> <truncated> ""\""api-groups\""<rest of post truncated>

### Reply 3:
You guys realize that the added power draw from these overclocks negate any possible profit right?That and you will blow your equipment up much faster.Pushing the hardware like this is a recipe for disaster and a pretty dumb thing to do if you care about making money.

### Reply 4:
Code:echo <truncated> : ""true"","" >> <truncated> <truncated> : \""100\"","" >> <truncated> ""\""fixed-freq\"" : ""true"","" >> <truncated> ""\""bitmain-freq\"" : \""1\"","" >> <truncated> <truncated> : \""200\"","" >> <truncated> ""\""multi-version\"" : \""1\"""" >> <truncated> want make RPM fan lower.. because 6320 RPM is very high..How can make it?I'm interested what mean these <truncated> ""bitmain-fan-pwm\"" ""fixed-freq\"" : ""true"","" ""bitmain-freq\"" : \""1\"","" ""bitmain-voltage\"" : \""200\"","" What happen if I set <truncated> ?and ""bitmain-fan-pwm\"" : ""50""

### Reply 5:
Just change bitmain-fan-pwm to something lower, like 50 or 60%.

### Reply 6:
after overclocking T9+ with full fan RPM, I am getting 15.5TH with 2300W PSU.BUT the tempruture goes to 110 degree. are you running your T9+ on 110 degree? is it safe? I don't want to burn the hashboard. please advice.

### Reply 7:
in hot summer if my S9's came above 100 degrees, i rebooted and stopped them. 110 is suicide...

### Reply 8:
I am running a T9+ with two boards at 850 MHz, peaking around 109C. It's been stable at that temp for weeks. I had disabled the temperature protection earlier and melted one of the chips in the low 120C range. So 110C should be fine.

### Reply 9:
Well, of course it does decrease the lifespan... but seeing as the T9+ thermal protection kicks in at 110C chip temps, it shouldn't be hot enough to instantly damage any components.

### Reply 10:
ok.They melt at 120 degrees....So 110 should be fine...Am i missing something here?

### Reply 11:
im sure that revving your car in the red zone, but before rev limiter kicks in wont kill it instantly as well, but still i wouldnt buy your car if you did...

### Reply 12:
Easy , on ""echo ""\""bitmain-freq\"" : \""1\"","" "" replace the ""1"" number for your desire freq, for you, take - echo ""\""bitmain-freq\"" : \""700\"","" -

### Reply 13:
OK THANKS, so this will make the miner work over clock as when i use skylaker code above?

### Reply 14:
No , if you take freq ""700"" , it run at 700mhz and 870Mv chip ... (i read the code source)

### Reply 15:
ok thanks, so how can i increase the chip voltage to 923mv?

### Reply 16:
good day, i like the post u made to overclock bitmain s9, however when i set frequency to 1 it runs at 850mh as you said. Is there another code to set the fixed frequency to something like 700mhz? if you can can you please email me it at janoycuff@gmail.com . im using 1600w psu and would want miner to run at 700mh

### Reply 17:
sorry to ask .Noob QuestionI got an T9+ how i can set my fans at 40% ??Code:if [ <truncated> = ""true"" ]; then echo <truncated> : ""true"","" >> <truncated> echo <truncated> : <truncated> >> <truncated> got thi on my cfg file i made it Code:if [ <truncated> = ""true"" ]; then echo <truncated> : ""true"","" >> <truncated> echo <truncated> : \""40"","" >> <truncated> it <truncated> : tru<rest of thread truncated>
","[
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  },
  {
    ""T9+"": {
      ""hardware_name"": ""T9+"",
      ""hardware_is_owned"": true
    }
  },
  {
    ""R4"": {
      ""hardware_name"": ""R4"",
      ""hardware_is_owned"": false
    }
  },
  {
    ""APW 1600 power supply"": {
      ""hardware_name"": ""APW 1600 power supply"",
      ""hardware_is_owned"": true
    }
  },
  {
    ""2300W PSU"": {
      ""hardware_name"": ""2300W PSU"",
      ""hardware_is_owned"": true
    }
  }
]"
22992,"Date: 2019-06
Topic: S11 not hashing/mining
### Original post:
Hi there,One of my S11's recently hashed with only 2/3 boards. This was happening intermittently and every restart or so, it would be fine with all three boards hashing.I decided to upgrade to the latest s11 firmware, and now none of the boards are <truncated> read PIC voltage=730 on <truncated> Chain:2 <truncated> S9+ can not record Chain[J3] voltage added <truncated> Chain:2 base freq=400Asic[ 0]:700 Asic[ 1]:700 Asic[ 2]:675 Asic[ 3]:675 Asic[ 4]:700 Asic[ 5]:700 Asic[ 6]:700 Asic[ 7]:700 Asic[ 8]:675 Asic[ 9]:675 Asic[10]:700 Asic[11]:700 Asic[12]:700 Asic[13]:675 Asic[14]:700 Asic[15]:675 Asic[16]:700 Asic[17]:700 Asic[18]:700 Asic[19]:700 Asic[20]:675 Asic[21]:700 Asic[22]:675 Asic[23]:700 Asic[24]:700 Asic[25]:700 Asic[26]:675 Asic[27]:700 Asic[28]:675 Asic[29]:700 Asic[30]:700 Asic[31]:700 Asic[32]:675 Asic[33]:700 Asic[34]:700 Asic[35]:675 Asic[36]:700 Asic[37]:700 Asic[38]:675 Asic[39]:675 Asic[40]:700 Asic[41]:700 Asic[42]:700 Asic[43]:675 Asic[44]:700 Asic[45]:675 Asic[46]:700 Asic[47]:700 Asic[48]:700 Asic[49]:675 Asic[50]:700 Asic[51]:700 Asic[52]:700 Asic[53]:675 Asic[54]:700 Asic[55]:700 Asic[56]:675 Asic[57]:700 Asic[58]:700 Asic[59]:675 Asic[60]:675 Asic[61]:700 A<rest of post truncated>

### Reply 1:
It does say what the problem is, in plain <truncated> power voltage <truncated> power abnormalAntiminer S11 and above require input between 200v and 240v , anything out of that range is a big NO, and this is what they say here > <link> get a watmeter and check your electricity, if it's above 240 or below 200 then that's sad news and you got to do something about it.

### Reply 2:
im feeding the same power source to 26 other machines, 23 of them are s11, how can this one unit have abnormal power?I even swapped the power feed of this machines and another machine coming from the fuse box. Power source doesnt seem to be the problem.

### Reply 3:
In this case then the error in the kernel log might be referring to the DC voltage ( the output ) , in other words the PSU has gone bad.Have you tried switching the PSU? You can actually measure the DC voltage coming out of the 6pin if you have the tool, if you confirm the PSU is bad then you need to know what caused it.

","[
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  },
  {
    ""hardware_name"": ""s11 firmware"",
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  },
  {
    ""hardware_name"": ""S9+"",
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  },
  {
    ""hardware_name"": ""watmeter"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""PSU"",
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23131,"Date: 2019-11
Topic: BITMAIN S9 BURNT TRACE ON BOARD
### Original post:
that area in the first two pics - is that the corner furthest away from where the 6pin connectors are? looks like some sort of grounding connection. but I do not recall anything connecting to the hashboards outside of the psu and the wires to the controller.

### Reply 1:
it is furthest away from the pci connectors on the (adjacent corner) and on the side opposite of the surface mounted pci female connectors, its not supposed to touch the ground, i feel that when it was shipped from NYC to CALI it got dropped several times causing the hash boards to come into contact with the case, as 2 boards connected to the case in the same spot , i feel as if the boards were shorted together, but it wasn't a magic smoke moment , i do recall smelling faintly the smell of overworked electronics / possible overheating , but caused by these points becoming shorted between two boards , im no expert but do have some experience in circuits, seems like 9-12 volts shorted through the boards and the smallest trace acted as a fuse, or messed up some transistor or step/down/up ect the other 2 boards work great , even have 668 factory freq in fact all of the boards were above the 630 freq standard, just not sure if the board logic side got nuked or flashing the hex/eprom stuff might bring it back to life , it does have the red light come on but when it trys to start cg miner in braiins os cant start hardware

### Reply 2:
so just bought a s9 from Fleebay and it worked for about 30 min before smelling like burnt electronics,using ibm server core power supply on 220 it does 236+ amp to the 12 volt rail, so i doubt the power supply is the problemflashed braiins os , and set it to default settings , all looked good, checked it 30 min later and the middle board was missingthought i smelled burnt electronics , could be wrong as it was subtle.so i have found only this damage these are 2 diffrent boards, and the 3rd board seems to have different traces in that locationthe one with less damage still hashes , but the one i scraped off the burt coating will not hashand will not reconise the board at allany help with this would be nicei see in the case the boards must have grounded out

### Reply 3:
ok yea that should not be connected to anything - but getting knocked around in shipping may have caused it to make contact and short out. i would recommend putting original fw - braiins os is not worth using in my opinion.

### Reply 4:
no braiins ? im running it on 11 s9's love it , have several cgminer files and use cron tabs to call them up and restart cg miner, starting and stopping cgminer by cron tab ( set day time ) and also switches the conf out for the heat on certain days i.e from 12:45 goes to 75% under clocked and up to 1.03 at 5pm and up to 1.10 at 11 pm to 6 ami under clock for heat & time of day, and over clock once sun is down and things cool off , and further over clock at near midnighthave herd lots of bad things about the stock firmware,possible hash rate stolen - not sure if its true but like a hidden dev feenot secure - able to be hacked intoNo ssh - this is crucial for me as i scp in and change cgminer files and add different configs , and cron tab info

### Reply 5:
it seems as the broken hash board has some life , but im not sure if i need to flash it with something ?

### Reply 6:
the only flashing you can do - as far as I know is to the controller - by ""some life"" do you mean some chips work and some do not? are some showing as 'X' or not as as all instead of as an '0' in the ui?

### Reply 7:
well my opinion on Braiins is this - slush promotes it, if slush users are starting to use it why is slush luck so bad? their firmware is so great and better should they not be doing better?i would like to see if any Braiins users have actually found a block. most pools wont tell you which of their users found the block though - even though they could do so very easily. Also there are pools that will ban users for using non-official firmware, also not worth the risk in my opinion.as for the stock firmware - it works, there is no stealing of hash rate or dev fee with manufacturer fw - yes they do block ssh and yea that pisses me off too - i used to use awesome miner to do a lot more with my miners - now I have to be on site.if ssh is your main reason, then i understand.

### Reply 8:
That is a weird spot to have a burn, that should be the +12 and ground backplanes. I wonder if the chip next to it shorted out, burned the board, and then opened up.C

### Reply 9:
there are 2 boards with this trace exposed , either doped in shipping and when powered up they connected together via the case and somewhere on the board there is either a broke trace or failed part , just dont know where to start, do i try flashing it with serial device , or connecting it and see if it responds to serial device ,when powered up without controller i see the red light flicker and light up , <rest of thread truncated>
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    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""IBM server core power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Controller"",
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  }
]"
16385,"Date: 2022-12
Topic: Are miners paid premium over market price for mined Bitcoin?
### Original post:
I would be very happy, if someone with mining experience can explain to me how miners are selling their coins (e.g. to cover electricity bills).Maybe you can also guide me to an article explaining this process. ""How do miners sell their Bitcoin?"" Do they just have a usual account with a centralized regulated exchange like Coinbase, Binance or Kraken? Do they sell OTC? Is banking an issue? Bank might dislike crypto related activity. ""Are you paid premium over market price?""I read a couple of articles claiming that ""virgin"" (=freshly mined) Bitcoin are sold for a premium over market price: <link> link <truncated> <link> <link> this a rare exception for miners to be paid a premium on their freshly mined Bitcoin or are there common arrangements in place to buy your coins for a premium. So I was wondering, if there are any marketplaces where virgin Bitcoin are traded as a separate category from normal Bitcoin?

### Reply 1:
Most of those virgin buyers are probably doing it for privacy. If you're also interested in that there are dozens of mixers or a method like coinjoin to obfuscate your transaction, I don't think it is worth it for retail users. Might as well hold your BTC and wait for the next bull market if profit is what you're after.

### Reply 2:
Not marketplace, but i've seen few mixer advertise they offer newly mined Bitcoin. I never try any of those mixer though, so there's possibility they're lying (giving coin with long transaction history) or <truncated> those new coin could be deemed ""tainted"" anyway if government claim it's mined by pool/miner on sanctioned country or helping criminal ""laundry"" their coin by including transaction with very high fee.

### Reply 3:
I mine, but I usually exchange them directly to any exchange. I don't use any mixer for virgin BTC since it's clean and came from the pool.I guess that is why they mix or trade BTC in P2P exchange due to privacy. Also, I think some country before ban mining, so possible those who are secretly mining want to withdraw a few BTC to pay bills and the only way they can do this is to trade them in a P2P exchange or use a mixer to make sure they don't have any traces that they are mining.

### Reply 4:
I would buy peer to peer for privacy. However I would buy virgin Bitcoin for regulatory compliance.I see BTC more as insurance policy. Limited supply make it interesting for savings. And censorship resistance makes it interesting for censorship / persecution / tyranny.I use Bisq for buying BTC peer to peer. Peer to peer trading in itself is a ""bad"" transaction history according to chainalysis. Plus some of the coins I acquired on Bisq have an ""bad"" history before Bisq. I assume future regulation might become more strict. This could be a potential risk for my investments. Therefore I would like to diversify the history of my acquired Bitcoin to reduce risk of future regulatory tightening. Using coinjoins also makes Bicoin ""bad"", so it does not help me to become more resilient in case of regulatory tightening. <link>

### Reply 5:
I can only agree with this statement and already the question itself reveals to me that Bitcoin itself was not fully understood. Of course you can have the fear that bitcoin will become more regulated, but everything can alway become more regulated. The question is just how likely it is and I dont see any reason to do such a regulation since it would mostly affect normal people and not criminals.

### Reply 6:
If somebody is happy to make money of me, by selling me his virgin coins, I'm happy to buy.You may question my intelligence or knowledge, but who doesn't like extra money?Of cause the government could spy on us. The question is just how likely it is that the NSA exists, since I dont see any reason to spy on your own population since it would mostly affect normal people and not criminals.Who suffers under anti money laundering regulation? Few criminals and many normal people.What about money does it help rich asset owners or people on a paycheck & renting? Some may think the people in power optimize society for the benefit of those not in power. Others may think that the people in power would like to stay in power and pressure the powerless to obey them. In oder to stay powerful they may use regulation to starve of threats to their power. Is this a hint on fungibility and censorship resistance?

### Reply 7:
Buying bitcoin peer-to-peer means you don't acknowledge ""tainted / clean coins"". They're all equal, and so it is.They're going to. Regulators won't stop here. As long as they don't have the control over the currency, they're going to be as hostile as possible. That's why everyone should switch to peer-to-peer trading at the moment, and avoid centralized exchanges which are entities they can impose control over easily. With software like Bisq, we can gain a new territory of freedom for a while.

### Reply 8:
As ment<rest of thread truncated>
",[]
16542,"Date: 2023-06
Topic: 2 in 1 question about mining and operate a crypto wallet.
### Original post:
For crypto mining and crypto wallet operation, is a router/wifi connection safe or not? What could possible go wrong using by very own router connection for the internet? My router is wired type and wifi hotspot active, so security stays at NAT Type: Strict all the time, I know that those that have :Moderate or None are less secured connections....Is there anything is should be cautious about? Also is public wifi the only unsafe practice there is? Because that's why I found online, I just want to make sure that me using a router is safe.

### Reply 1:
Never heard that there is someone being hacked by connecting to your own router and internet. By default, the router is set to a high-security firewall.So it is safe than connecting to public wifi unless there is someone who is also connected on the same router and has permission to your device then he can retrieve data from your device or without permission maybe he can able to brute force and retrieve data from your device.

### Reply 2:
You should be safe in theory, I don't see how using your own router could cause any security breaches in this case.As long as no one can access your computer or servers via ssh, for example, I don't see what you have to worry about.If you were using a public hotspot, of course, you might be better off using a VPN, or even Tor. But on your personal router, I don't see the need.Which type of security key does your hotspot have? Is your router fairly new or very old?

### Reply 3:
I think with public Wi-Fi hotspots, it's totally dangerous to use them, especially when operating a crypto wallet even with the use of the VPN. Just yesterday, I saw a video of a hacker explaining how he can hijack a victim's device by creating fake public Wi-Fi hotspots which the victim then connects to unknowingly thinking that's a public hotspot only for the device to land onto the hacker's radar.

### Reply 4:
I mean if you use a weak password on your private Wi-Fi, it would still be risky as hell. Public Wi-Fi is more likely to be targeted so it is obvious why you should not rely on them if you want secure internet access. On top of that you can't really modify the settings and the host might run some terrible set-ups or run them with malicious intentions.I guess you can list your router configurations or product model if you want a detailed guide on how to set it up properly (or if there is a better product for your purpose). As an alternative, you can just disable the Wi-Fi and just connect your RIG through LAN. CMIIW.

### Reply 5:
Yeah that's a very interesting point. Man-in-the-Middle attacks are actually easier to do on a public hotspot / WIFI of course.But I think that using a VPN or TOR should be enough to protect you from them, as your traffic should not be visible to the owner of the network in question. In theory, if your traffic is end-to-end encrypted, the attacker won't be able to see or modify your data. I'm not saying it's ideal, I'm just saying that with a minimum of protection, it's theoretically feasible. This is not my specialty, so if a specialist wants to correct me if I'm wrong, I'd be happy to learn more about it.

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    ""hardware_name"": ""computer"",
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23142,"Date: 2019-11
Topic: Can't remove BRAIINS OS or Update Firmware on S9
### Original post:
When I try to update the Firmware I get ""The uploaded image file does not contain a supported format. Make sure that you choose the generic image format for your platform.""I have tried the S9 fixer firmware, Awesome Miner, and latest S9. It seems that BRAIINS has it locked.Any help would be appreciated.Thanks

### Reply 1:
Are you running BraiinsOs on an SD card or have actually installed it on NAND ? I see no reason why would BriaiinsOs lock you out of your miner, nobody has ever reported such an issue, my guess is that you are running the firmware on an SD card, and trying to install another firmware on the NAND while the jumper setting on the miner's control board is still set to boot from SD card, while this should work if the SD card is good and you doing it right, you can change the jumper on JP4 to match the position of JP1 , remove the SD card, start the miner, and it will take you the previous firmware which is installed on your NAND.Refer to the image below, from <link> option would be installing Bitmain firmware on that Sd card, boot from it and flash the NAND with bitmain firmware , you can find the tools you need here > <link>

### Reply 2:
There is no SD card in the slot. Also, I wouldn't say that I am locked out as I can change settings and the unit works. I just can't change the firmware.I am interested in trying the SD card but I don't see firmware for an S9. Is there no way to just do a hard reset? I have tried the IP button and reset and it still boots to BraiinsOs. Thanks again!

### Reply 3:
You will get this error if you are trying to flash the s9 miner with default firmware in the Braiins OS WebGUI. There is no way back if you flash the Braiins OS in the WebGUI but you can flash it through SD card as suggested above.If there is no SD card in the slot you need to provide. Buy a new SD card and make a bootable SD card and put the default firmware the guide is already posted by mikeywith. What you need to do is to use the SD card to make a bootable SD card(Where the default firmware of antminer s9 is installed) to flash the control board of s9 miner. It is likely you are going to format your PC or laptop to install a fresh OS.

### Reply 4:
That is correct, there is no way to do a ""hard reset"". From BraiinsOS you cannot upgrade to any other firmware using the bOS web ui, it only accepts bOS images. Reset only clears to default values, it cannot magically restore a firmware that doesn't exist anywhere.To put factory firmware using SD card, you have to use their official guide, which involves the T9+ firmware. Don't ask why, that's Bitmain for you...Once you have installed the T9+ firmware, boot into that and use the web ui to upgrade to the proper S9 firmware. You will not hash until you do that.Braiins OS doesn't lock anything, you are simply doing things wrong.

### Reply 5:
Thanks! The SD card flash did indeed work!

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    ""hardware_name"": ""PC or laptop"",
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11096,"Date: 2022-01
Topic: GekkoScience NewPac / Terminus R606 (BM1387) Offizieller Support-Thread
### Original post:
Hello, I have a Raspberry Zero WH with 7 port RSHTECH USB 3.0 hub.Raspbian Pi OS Lite 32 bit. 4x GekkoScience NewPac 22 bis 45 GH/sEverything runs normallysudo apt-get-Update sudo apt-get Upgrade -y sudo apt-get install -y build-essential git libusb-1.0-0-dev libusb-1.0-0 <truncated> libncurses5-dev libudev-dev screenlibtool automake pkg-config libjansson-dev mkdir -p git/vthoang; cd git/vthoang Git-Klon <link> CD-CGminer CFLAGS=""-O2"" ./autogen.sh --enable-gekko Then ""make -j 2"" comes with an error message.cCollect2: error:ld gab 1 Exit [2]: ?? [Makefile:893: cgminer] Error 1 makel21: <truncated> make1l: [Makefile: 1837: rein-rekursiver Error 1 makel1l: <truncated> machen: [Makefile:706: alle] Fehler 2 And the installation stops.Does anyone have a solution?

","[
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    ""hardware_name"": ""7 port RSHTECH USB 3.0 hub"",
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  {
    ""hardware_name"": ""GekkoScience NewPac 22 bis 45 GH/s"",
    ""hardware_is_owned"": true
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23935,"Date: 2022-05
Topic: Avalon 1246 acting strange HELP
### Original post:
New to mining and just got my 1246 up and running on the 28th. It hash rate is 86TH/s on ""High Performance"" mode and 72TH/s on ""Normal Mode"" it's making money so good But it's fans are cycling from about 2200rpm to 2800rpm about every 20sec. Also it has ""rebooted"" twice for no appeant reason. It's running cool enough I believe, high is 75C on H0 and H1 and 73C on H2.Is this normal? Thanks

### Reply 1:
did it reboot twice in an hour in a dayin a weekin an hour is an issuein a day not so muchin a week no worriesnot sure why the fans are pluseing every 20 seci think there is a way to set a fixed speed say 50%there was a thread that mentioned it

### Reply 2:
If that fan is automatically adjusted to a different speed without temp changes then you can try this one belowInstall FMS tool and go to diagnostic and put this command <truncated> Fan speed will be fixed to 100% you can change it depending on your ASIC temp status. You can download the FMS tool from this link <link> the latest one and let see if it will fix your issue.

### Reply 3:
Thanks for those suggestions. Another data point. It just rebooted and this time I immediatly copied the log file. I believe it rebooted due to a spurious temperture signal. TMAX was 89C and yet on reboot it was back to the normal 75C. I've been keeping the web viewer open and looking at temps and what not whenever I think about it and the temps are steady. The unit is located in the basement and there is no external heat source. Also it just running stock firmware <truncated> far it rebooted 3 time since yesterday, 12/30/21 @ 14:35, 12/31/21 @ 6:16 and 12:27I'll give that FMS tool a try! and report back! Happy New Year!!!

### Reply 4:
Ugh FMS is not for MacBook.

### Reply 5:
If Tmax is overheating it reaches 89c then it will give you some failure or it might shut down the hashobard and the miner will automatically reboot. If you can improve the airflow in your room or you can adjust the fan speed then it might solve your issue.Actually, without the API logs we can't troubleshoot what exactly your problem is but if you can post the whole API logs here and maybe we can exactly give you some suggestion to fix your issue.Use pastebin.com if you have limit posting the whole API logs here and paste the URL here.

### Reply 6:
I just did a 20min power off then boot up. Also added a box fan to blow over the Avalon. I'm confused as to how it could jump to that high temp when every time I'm check they are like now at T=25C, H0=73C, H1=78C, H2=74C. The basement air temp is 64F and where the miner is a couple lower. Getting some qaulity time looking at that web interface Thanks a <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':31963,'Remote <truncated> Blocks':63,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1217064.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[1731] <truncated> LW[1676480] MH[22 27 38] HW[87] DH[0.921%] Temp[26] TMax[91] TAvg[75] Fan1[3060] Fan2[3087] Fan3[3078] Fan4[3099] FanR[37%] Vo[328] PS[0 1205 1311 248 3251 1312 3515] PLL0[386 765 3090 11119] PLL1[305 287 1161 13607] PLL2[395 525 2733 11707] GHSspd[86109.14] DHspd[0.921%] GHSmm[87407.36] GHSavg[80541.98] WU[1125158.48] Freq[474.22] Led[0] MGHS[26313.94 27583.91 26644.13] M<rest of post truncated>

### Reply 7:
According to your logs under PVT_T1 it exceeds the maximum chip temp above 85c the first hashboard seems fine and in the 3rd hashboard some chips reach 85c which is the maximum temp of each chip.And look at these logsCode:Fan1[3060] Fan2[3087] Fan3[3078] Fan4[3099] <truncated> Fan2[3087] Fan3[3078] Fan4[3099] FanR[37%]It's running at a very low fan speed of 37% so my suggestion above should solve your issue or you can try to flash with the latest firmware I don't know why it didn't detect overheating and automatically adjust itself to a higher fan speed maybe it's because of the old firmware version. So flashing it with the latest firmware might also fix your issue.

### Reply 8:
he needs the fms toolwhich means he needs a cheap windows laptop<link> will run the programs you need and compared to the $8000 for the 1246 do not be |stupid cheap| or 'penny wise pound foolish'note I have no idea if that seller is any good but that type of laptop will be good enough for what you need.I am a mac guy.mining got me back into both windows and linux

### Reply 9:
My bad I didn't notice that you only have Macbook but I think you can run exe file on Macbook there are some guides there that you can follow.Try to check this one <link> you can try winebottler follow the guide here <link> FMS tool can be download here <link>

### Reply 10:
Thanks everyone, I had figrured I needed a windo<rest of thread truncated>
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    ""hardware_name"": ""MacBook"",
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10907,"Date: 2020-11
Topic: Announcment: Brand-new miner EMIC PowerModule - 5.65 TH/s
### Original post:
Hello everyone bitcointalk.org.My name is Micha Krawczyszyn and I'm founder of EMIC - European Mining Innovation Center (<link> We are new here, but everyone started somewhere.I would like to announce, that we started selling our first EMIC PowerModule miner in the pre-order.<link> few words about EMIC <truncated> of mining and mining equipment development is enormous. Seeing this, and taking advantage of this opportunity to take up the challenge to move mining to the next level. EMIC will be the first ever company to introduce 20nm ASIC chips to their miners.Preliminary testing shows that it is possible to achieve hashrate above 6TH/s while keeping the power consumption about 1500W.I'll get straight to the point. EMIC PowerModule revolutionize the mining. The most important for us, was that the cost of this device should be comparable to good quality computer (2000 PLN about 600 USD in Poland). EMIC PowerModules effective hash rate is 5.65 TH/s +/- 5% and power consumption is 1400W.Delivery of the first batch will take place in February 2015.Price of one module: 2059 PLN (about 600 USD //23.12.2014)More information can be found on the product page: <link> few words about EMIC:Firs<rest of post truncated>

### Reply 1:
No you aren't.

### Reply 2:
Will you provide a miner to a high ranking member of the community to review and authenticate?

### Reply 3:
Some chips specs & picture would be great.

### Reply 4:
When did you complete tape out?

### Reply 5:
Sign me up. I'll review a unit for you. Honest. No bias. I'll tell you what I think. And if you want it back after the review, I can ship it back if you reimburse me the cost of shipping it back to you. (I'd prefer I keep it.)

### Reply 6:
Well, lets see what happens with this one. I have to say the formatting makes a change and the site is pretty filled out.

### Reply 7:
I hope you can appreciate pre-orders are frowned upon by this community, and you are going to come under intense scrutiny without providing proof of product existence and performance.

### Reply 8:
Hello, Michael (that's where I quit reading). Go fuck yourself!Now, to read the rest of the thread to see if my assessment is correct.EDIT: Confirmed!ECHO: Go fuck yourself!

### Reply 9:
I live near (Warsaw), may I visit you and see a miner in action? Also you may consider to put one unit into Bitcoin Embassy in Warsaw (Krucza street), they will make an review and then you may gain some legitimacy...

### Reply 10:
lolwhy do you guys bother ?it's clearly a scam

### Reply 11:
Hello!""Customized cgminer 3.8"" - oh, please use more fresh cgminer... It shouldn't be a big problem.584.55 USD for 5.65 Th?! I'm in right now!!! But I am very afraid that your offer is just a scam. Usual artless scam. Hope I am wrong. How about cash-on-delivery (I very like that scheme...)?p.s. also ""Built in 2 x 750W power supply"" probably is not a best solution - what will buyer do in case of PSU failure? Should he wait for arrival of spare PSU from your store?

### Reply 12:
I'll do a review for you,I've been here since June 2011 I've missed doing a review with other miners,Dogie beat me to it many,many times

### Reply 13:
that is the 'scam' button right there....TWO 750w power supplies with case etc all for $600 usd please....the PSU's would be half the cost of the unit for them wholesale imhoscam ...the cc stuff is so people will think they are legit ""before it is activated' and send in BTC as a resultalso would help if the case did not look like every other scam/default/basic box case from now till 2 years back imhoimhoalas unacceptable ...the review by 'unacceptable' in the positive MAY lose a little credibility with the newbies due to your handle(I know you are all warm and fuzzy just saying I can see the corp type ""we are having 'unacceptable' review our product on bitcointalk a show of hands please in favor?""then again Searing with 2 built in PSU's probably is not a good choice either for a review

### Reply 14:
Pre-Order...Stop right there we know how this ends. Badly for anyone who orders. Come back when your ready to ship. People here are sick to death of funding companies R&D and getting nothing in return or the equipment only afters its obsolete and they have been mined to death before shipping.

### Reply 15:
6TH for 600$ ...yep

### Reply 16:
come on guys... you don't understand... this is the super duper new ASIC... you buy the PSUs and everything else comes free

### Reply 17:
Yeah the price screams scam too. So they may not even go through with the create a chip with customers money then mine until the equipment is useless then ship it scam. They will probably just run with the money straight away.

### Reply 18:
seriously, their specs could be absolutely true:at no point they said the 6TH are for SHA512

### Reply 19:
I would hope people are not rushing to place orders here...

### Reply 20:
Disclaimer<rest of thread truncated>
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23322,"Date: 2020-08
Topic: I think my t3 39th from Innosilicon is dying . Psu ?
### Original post:
Anyone know of a source for that psu I had a t3 39th unit. I think the psu is dying.

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]"
4014,"Date: 2023-01
Topic: deleted
### Original post:
sorry i didn't know blackarrow group buy are not allowed.

### Reply 1:
deleted

",[]
13801,"Date: 2022-09
Topic: Braiins OS & Braiins OS+ custom ASIC firmware: optimize performance & efficiency
### Original post:
So thats a case of switching the jumper and loading to an sd card and writing to nand again?

### Reply 1:
Custom ASIC firmwares developed by the Braiins team:also the company behind Slush Pool & Stratum V2.EXPLORE BRAIINS SOLUTIONSBraiins OS+Increase hashrate on your Bitcoin ASICs, improve efficiency as much as 25%, and get 0% pool fees on Slush Poolincludes autotuning/per-chip tuning feature to increase performance & optimize efficiencyCGminer replaced with BOSminermore supported modelsGET BRAIINS OS+Braiins OSCutting-edge firmware with an implementation of Stratum V2 and mining software written from scratch in Rust language.fully open-source, fully auditableCGminer replaced with written-from scratch (in Rust) BOSminersupported models: S9, S9i, S9jGET BRAIINS OSAny feedback is really appreciated!For miners, by miners.braiins.com

### Reply 2:
You can upgrade manually from the miner itself, use this file in System > Flash Firmware:<link>

### Reply 3:
Thanks Artemis, I tried that but obviously the wrong file lol. I didn't realise it was the one for the arm <truncated> flashed it. Works perfectly. Thanks again.

### Reply 4:
any one running s17s I have a s17 running and used tuner vs my settingsI am trying to determine how long tuner tunes.also what are people getting with the tuner set to 1425 watts I am at 1 hour and 11 minutes and around 42 th at 1425 watts settingI have this <truncated>

### Reply 5:
You are running a version too old, the x17 family has gotten many updates and bug fixes, in the following days should come another release, but you can try enabling nightly feeds (only if installed into NAND, SD image here) in the meantime. The latest nightly is 2021-06-10.

### Reply 6:
I got it to upgrade to <truncated> fact. I set up 2 of these using parts from 3 s17pros.two had 2 good and 1 bad boardone had 1 good and other boards were sold. 7 boards total.So after much tinkering with the 3 miners .I built 2 braiins units and I have a dead board missing a heat sink.I will be sending the dead board and miner for repairs after I check in on a pair of t17's which are troubled.Back to the working braiins boards.1 works great no issues and tunes well with the 3/3/2021 software.the other is a different story one board is weak and will not tune properly. It gets too hot. So I set the freq lower to 470And set the other 2 boards to freq 570temps work this way on this unit.see results below

### Reply 7:
You have it doing 18.xTH per board on the 2 'better' boards, but isn't that what it's supposed to do with standard firmware? (without losing a 2% fee)So either you lose 2% off that, or it's running 2% harder than what you see to cover the fee and still only getting the expected hash rate?

### Reply 8:
Upgrade to today's release, it incorporates more fixes:If you have auto upgrades enabled, during the day or tomorrow the miners will update themselves, otherwise you will have a blue ""upgrade"" button in the top right corner of the miner's web UI you can use at your convenience to upgrade (single click to it will do it without further confirmation).Try to stick to changing only the power limit value (with autotuning always enabled). If you want to ""lower frequencies"", lower the power limit instead and wait for the autotuner to do its job. Do not disable autotuning, and don't bother changing the frequency value directly as this does nothing while autotuning is enabled (true placebo there).With Braiins OS+ you normally only manipulate the power limit value and nothing else. Less power = lower frequencies and less heat dissipation (better efficiency at the given limit). The unique autotuner is the core value of Braiins OS+ and disabling it would be pointless unless for diagnosing.Always give time to the autotuner. It can take many hours. Failing boards will be retried later even after the others are already Stable, so giving the miner a day or so to stabilize is a good idea.While manip<rest of post truncated>

### Reply 9:
So you are claiming that slush pool total fee (pool+firmware) is charging their miners less than 0.9% when using OS+?... and I do (or don't) wonder why the opening post doesn't tell anyone about the OS+ fee.

### Reply 10:
So here is some simple math.3 s17 machineswith 7 boards and 5 worked they did about 84th between them using stock bitmain firmware. no fee.using braiins6 boards work and I get 108th 2% fee2% of 108 is under 3th. lets round to 3so 108-3= 105 thSo I now have 105th vs 84th and i use less watts per th.note this includes the 2% fee so I gain 21th and get about 37watts per th vs 42 watts per th.I want to stress s17 psu are very very very hard to find.If you do not have any spares consider using this firmware it saves watts which is easier on the psus.Think of the 2% fee as psu insurance.at the <truncated> are all hard to find.braiins works with a lot of the gear above.<rest of thread truncated>
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11244,"Date: 2022-12
Topic: is this store safe?
### Original post:
any one have ordered from <link> if possible advise me some trusted vendors looking to buy a few about 30 or so asics but so many scam websites outherlooking for the best USD/Th dont care much about power consume thats why the fist shop looks good

### Reply 1:
This has been answered several times over the past few months in different posts so if you would simply take the time to look around this area of the Forum you would find that yes, that is Canaan's official store site...

### Reply 2:
ok but my bad im sorry for that but i also requested some other trusted vendors thats why the post

### Reply 3:
The link of the store in the OP is legit and safe. When dealing with online official stores or distributors, pay very close attention to the URLs (So many are just phishing/clone/scam links that end up tricking so many buyers)More of the official distributors1. <link> <link> <link> ---> <link>

### Reply 4:
If all you care about is $/th then you should not be looking at the official websites, those stuff listed there are always the latest generations, the best $/th are those 5 old years miners, like the S9s and the Avalon 841 and their brothers.If you know which model you actually want, I can help you, also where do you want them to be shipped?

### Reply 5:
Can't say I know of any that are Official distributors and as is also true with Bitmain, Innosilicon, and microBT (Whatsminers), you REALLY need to buy ONLY directly from the manufacturer or through any Official distributors that those manufacturers list on their websites.Why? Primary reason is that the miner warranty is valid only with the entity that 1st purchased it from the manufacturer. It is NOT transferable. That means that when buying from some random 3rd party all warranty service MUST be handled through who you bought it from. That is most likely going to be a big problem... Only the Authorized distributors are allowed to have you directly have you get the miner repaired under Warranty though do still have to start the Warranty process with the distributor 1st to keep the paperwork straight. .

### Reply 6:
shiped to portugal well not entirly not caring about power becouse even if is free power is not unlimited and i have around 150kva of power to use .and the s9 generation consumes half the power of new generations for 14th only plus the shiping fees is amost the same so trying to get some balance here since i plan to drain about 130-140 kva leaving a few marging error for air circulation and lightssome advices are welcome

### Reply 7:
I am a supplier from China, you can contact me

### Reply 8:
So roughly 120kw, i believe the best balance would be something in the 40-60 w/th, maybe m21s or m20s, each needs about 3.3kw, the m20s is about 62th on average, m21s is 52th on average.So you can squeeze in about 35 of them35*52 = 1820th or35*62 = 2170thOf course the m21s will be slightly cheaper , both will consume roughly the same amount of power.Keep in mind those will be used, brand new will be m30s, same power with an average of 82th instead.

### Reply 9:
Is it the 150kw monthly or daily? Because if its daily the suggestion would be great option but if its monthly basis then you could only run only one miner because the suggested above m21s or m30 will consumed around 100kw every month if you run it 24/7.And take note don't deal to any newbie pretending to be a supplier like the one posted above because the links posted by Bitcoin_Arena don't have other verified distributor or supplier.

### Reply 10:
150kw is the max isntant power that the line suports nothing to do with monthly or daily

### Reply 11:
so derate to 120 maybe even 115kwatt constant.since it is free but only 115 kwatt you have a few choices. mikeywith mentions the whatminer 20si have had bad luck with my whats miners but my asic space gets beastly hot in the summer.you want 35 to 50 watt gear that does not breakis your space roomy and can you cool the gear. if you can i would get the whatsminers

### Reply 12:
now a reliable supplyer for second hand machines in portugal is overpriced as fu.... like an s17 pro cost 3000 euros wili in china cost 700 USD

### Reply 13:
Um, welcome to the world of economics? Resellers have to pay for the miner + import taxes/VAT, shipping, etc. + make some money otherwise what's the point? Since you don't live in China that's just how the world works.

### Reply 14:
I can get a pallet of 24 t15s sent to me in New Jersey for only 4200 which is only 175 a unit.They do 19 th and 1150 wattsthey would be good for the op but I am sure that by the time they ship to Portugal Say two per box They would mark up to 175+175+175=525 with vat of 125 say 650 for 2 and I would make zero dollars to do it.Shipping a pallet would be complex I would be afraid to try it.I have shipped from NJ to Spain and to Portugal more than a few times. And many times they get held in customs a long time.

### Reply 15:
hehe <rest of thread truncated>
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    ""hardware_name"": ""Avalon 841"",
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    ""hardware_name"": ""m21s"",
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    ""hardware_name"": ""m20s"",
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    ""hardware_name"": ""m30s"",
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    ""hardware_name"": ""whatminer 20s"",
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    ""hardware_name"": ""t15s"",
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23182,"Date: 2020-01
Topic: innosilicon t2t+ 35 th problem
### Original post:
hi everyone i design a cooling sys with oil for innosilicon t2t ;first, why these t2t look like t3 and have power beside them ? they have 35 th not 50. second when they work for 30 min the temp was going high and suddenly the board not hashing and the status of them became ""dead"". the led light on board was blinking and i turned of the miner .Has this caused a problem? what can i dofor the miner ?

### Reply 1:
What kind of oil did you use for your miner?The only oil that I know can be used for cooling ASIC miner is mineral Oil if you use different miner that has little resistance it may affect or damage your miner.That's strange if your t2t PSU is on the side and the actual hashrate of t2t is around 30th so don't expect more hashrate. If it is t3 the hashrate must be around 45th. Better check the unit model on the side of the miner you should see it with serial #. About the increased temp then die it might because of the oil and maybe the fan is detected as not running or not reaching the minimum RPM speed.Much better check the logs in WebGUI to find the issue or copy them and paste it here(Use insert code function before you paste it).

### Reply 2:
tnx for reply i use mineral oil and for five t2t 25 th use that , it work properly . i think the oil has no problem.but i fear that temp harm the device and i affraid to turn on the miner.plus there isnt any log in the webgui to find out what happened to miner.its similar in shape to t3 but has 35 th and in webgui and on the top of control board has t2t lable.

### Reply 3:
What do you mean by ""there isn't any log in""? You can't find the miner logs?This should be the right path system Maintenance> miner logs.Copy them and paste it to pastebin.com then copy and paste the URL here.Then do some screenshot of your miner status and post it here and take a picture of your physical minerWe will try to find out what's happening in your miner.But before you do that check the performance tab from the settings if it set to performance try to set it to balance then test it again. If not, then do the above suggestion and maybe we can find the issue under the miner logs.

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16525,"Date: 2023-06
Topic: Am I right about this or not
### Original post:
Guys correct me if I am wrong, somebody ask me a question about what will happen to bitcoin miners after all available bitcoin have been mined and no more halving every four years, will miners go out of business? This is the question I was asked and I believe that miners are the reason why transactions are been processed, right? correct me if I am wrong though, I believe that even after all the 21 million coins are mined, Bitcoin miners will still be here because they are the reason why transactions are going through or am I wrong?

### Reply 1:
yes, they'll be here.they will collect the tx fees for their services.

### Reply 2:
There are so many similar topics that discuss this sample this one How will Bitcoin survive after all 21M coins have been mined?Or this one 21.000.000 Bitcoin!It would be better to read each post from these threads so that other questions in your mind are also answeredMiners are one of the Bitcoin transaction life cycles including nodes without them Bitcoin transactions will never be confirmed.

### Reply 3:
Every 4 years (approximately) there is a halving and the block reward for miners is reduced. Soon we should see that the block reward will be less than the transaction fees in the block. There will always be miners, if the algorithm does not change, but their number will be regulated by the profit from mining. The more miners, the more secure the blockchain.

### Reply 4:
Sure, miners will still be there, blocks need to be found for the transactions to be confirmed. Otherwise, transactions would be stucked in the mempool forever.But I think it is not going to happen before the year 2136 (or 2140, not sure of the exact date)After this date, as IIrik11 said, they will no longer receive block rewards, but only transaction fees. The fees are not negligible for the miners, even if the price doesn't go up much more. It's more the adoption and usage of the blockchain that counts, recently we saw blocks with a reward (block reward + fees) that went from 8 to 11 BTC. Huge reward per block, even with fees only. Imagine the same reward with a BTC at 60 or 100k However, the real question is, will BTC still be needed and useful in 2140? And for the time being, I don't think anyone will be able to answer that question with any guarantee.

### Reply 5:
Even after the 9th halving in 2043, the block reward will be 0.09765625 BTC. This is already significantly small, and then 0.04882813 then 0.02441406. The rewards are no longer significant and miners will receive the main income from commission fees.In 2122, the block reward is 0.00000009, but I don't think we'll live that long.

### Reply 6:
You are right, and bitcoin miners make money through block rewards, transaction fees, profitability and costs, remember this. Just always remember that bitcoin miners are responsible for adding and verifying transactions on the bitcoin blockchain. And the purpose why they do this is because they solve complex math problems. so in return for what they do they are rewarded with bitcoin.[1] Job of the Bitcoin Miners

### Reply 7:
This is cool, it means the excitement will always be here, I knew this before but I just wanted to confirm again, because someone threw this question to my face, and thanks for your answers, everyone. I believe Bitcoin is here to stay, miners will always have something to make from transaction fee at least which is a very good thing.The only thing miners need to keep doing is upgrading their mining equipment, and the profit will be lower unless transaction fee increases, I hope this gets to new bitcoin miners that are worried about the uncertainty of mining in the future.

### Reply 8:
At the end of the day, those who find mining unprofitable will quit. I don't think things will change that much even after block rewards are gone. I wouldn't be surprised if we see a drop in hash rate or something similar though. You can't force people to mine just for the sake of keeping the network secure since most people are here for profit. Will this going to be a problem? I do see the possibility of some problems happening, but it is definitely not unsolvable. CMIIW.

### Reply 9:
Unfortunately, it is impossible to support the bitcoin network if you start mining on a computer. And ASICs in the apartment are also difficult to use. Therefore, I do not know now any owner of an asic who supports the bitcoin network for the sake of the idea. All my acquaintances miners consider only profit and want to recoup their ASICs as quickly as possible.

### Reply 10:
Thank you, @Z390, for this thread. It was just about creating a similar thread for clarification about the mining reward for the last Bitcoin halving and possibly all Bitcoin mined. I don't know how long they will be, but out of curiosity, I always wanted to ask about it.I still have one of my curiosity questions unanswered. To some point, I always think that there might be a grea<rest of thread truncated>
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23191,"Date: 2020-01
Topic: t17 40ths
### Original post:
Okay 12 pieces of t17 correct?Could you show firmware?It is on the system <truncated> Type Antminer T17Hostname antMinerModel GNU/LinuxHardware Version 19.10.1.3Kernel Version Linux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018File System Version Mon Jul 29 00:19:06 CST 2019CGminer VersionThere are a few versions of firmware.do you have the one above?<link> is also this one.and there are older ones.

### Reply 1:
hi everyone,I have a small farm with 12 T17 40THSthe cooling system and air-conditioning is wellthe Devices face the same problem one after another, and that problem is:Code:error: get_temp_info: read temp sensor failedThat will turn off the hashboard, while the next device is running smoothly at that moment ,However, the temperature of the farm is usually between 10 and 30 degrees Celsius.I've reboot them several times but the problem apeare in about 1 day.is there any sujestion please?

### Reply 2:
Does the machine start-up and run normal for any period of time? If so then it could be an issue like below. If not then it sounds like a hardware issue.Can you tell us more about how the miners are placed? Is this happening to more than 1 of your miners? Does the problem happen more when the temperature is closer to 30 or is it sporadic? What sort of board temperatures are you seeing on the miners themselves.Your space may be cool enough in general but you could also be facing an issue with short-circuiting airflow - warm exhaust making it's way to the intake. I haven't had an antminer in a long time so I'm not familiar with that error.

### Reply 3:
Code:error: get_temp_info: read temp sensor failedits bad sign, its mean motherboard or hash board are defective, captor dont give temperature...

### Reply 4:
Not really, there Kernel log is not a holly book, the problem is not seldom stated explicitly in the kernel, i have a few miners that have the temp-sensor failed problem and they work without an issue.OP, use common sense, if the problem happens to more than one miner then it can't be cables, wires, etc.. it has to be something they all have in common, which is one of three.1- Voltage2- <truncated> that they are T17s, these gears have almost zero tolerance to voltage drop, if you are not feeding them stable 200-240v, they will act funny, the reason why one will fail when another one does not, could be because the voltage regulates / increase when one miner goes out of the equation.I can go on and on explaining all different possible, but to make your life easier, try to shut down half of them, keep half running, if the problem goes away, then it's your voltage/internet, if not then try a different firmware. It can't be anything but that.

### Reply 5:
Try checking the wires to the hashboards.This is what one of the steps that Bitmain sends out if you contact them about the issue.1.check the wires for the hashboard--pull them and re-plug them again, and also you can try to change the new wires.

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13776,"Date: 2022-06
Topic: Apminer tool
### Original post:
Hey everyone . I looked on bitmain support page and they promote apminer tool for monitoring and batch control of antminersHas anyone used it ? Is it safe ? Any reports of people using this and getting hacked ? Thank u for in input

### Reply 1:
It's just an alternative to BTC tool, it's a very basic tool that does the job for those who can't afford something like Awesomeminer, you are probably using Bitmain's firmware so why worry about getting hacked using their tool? I had no problem using those tools back in the day before buying proper monitoring software.Keep in mind that most antivirus programs will flag tools like this, most of the time those are false positives that you can ignore.

### Reply 2:
Thanks for the input . I was inquiring just in case there was known reports of that software causing issues . Was not able to find any reports so i figured id ask here .

### Reply 3:
Actually, the tool has its own Antivirus you can scan a batch of your miners and if it detects one of the infected miners it shows poisoned under status. Much better learn and read their PDF guide from this link below to learn how to use it and its official tool provided by Bitmain.- Apminer tool and user guide

### Reply 4:
Hi , did you get the answer?

### Reply 5:
Its as safe as the person using it. There is nothing inherently unsafe about the program itself, but I wouldn't rule out people ability to screw things up.

### Reply 6:
Its have been always one of the shittier of the tools out there, I've always used the BTC.com tool.

","[
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    ""hardware_name"": ""Bitmain's firmware"",
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  },
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    ""hardware_name"": ""monitoring software"",
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]"
23959,"Date: 2022-05
Topic: Avalon 851 wu  abnormal problem
### Original post:
Hello guys Ihave problem with avalon 851My device light blue and read full hashrate 13.5thBut the problem withe [WU] low and the divce not readHashrate on pool what ican do about wuLook to photo <link>

### Reply 1:
Please use <link> to upload your screenshots the link you provided above is PPD(PayPerDownload) are you promoting it?About your problem, I suggest you read all the troubleshooting guides for this unit here below- <link>

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23197,"Date: 2020-02
Topic: chain[x] - Failed to read chain voltage (attempt=x) with resp: 0xff 0xff
### Original post:
hahah ok guys,i will use the new and andapted version. Toplic closed for me.Very thank's

### Reply 1:
Hi guysI have a new S17+ with 73 Th's by default and has ready for inmersion cooling.Has been installed the 0.9.9 firmware release from Asic.to (<link> but return me the error on kernel log.What happend? This is the first setup and first run, never i used this miner.Thank'u

### Reply 2:
Based on Cgmier code, here is the function that throws that errorCode:void <truncated> chain_id, int *chip_volt){ int chip_id; unsigned char reg[REG_LENGTH] = {0}; unsigned int volt = 0; for (chip_id = 1; chip_id <= g_chip_num; chip_id++) { <truncated> chip_id, reg, REG_LENGTH)) { applog(LOG_ERR, ""failed to read voltage for chain%d chip%d"", chain_id, chip_id); chip_volt[chip_id - 1] = 0; continue; } else { cgsleep_ms(2); volt = 0x000003ff & ((reg[7] << 8) | reg[8]); chip_volt[chip_id - 1] = (volt * MUL_COEF) >> 10; } }}<link> someone with better understanding of the cgminer can explain the error in details, however, I think taserz will be the best one to answer your question, his firmware is relatively new and it's unlikely that there is anyone else who had a similar issue.I will forward this topic to him to get his attention, but it would be best if you post in his topic Firmware for S17 - 85th/s and T17 - 65th/s T17 44t@45w/t AUTO-TUNE Asic.to, I don't know what ""terms"" he has in regards to support, but he is a nice dude and he might even go to as far as remotely logging into your PC and check your miner.Before that start with the normal troubleshooting methods such as powering t<rest of post truncated>

### Reply 3:
Okay so that error you got was on purpose. You flashed the S17 non e or + firmware to the machine and it is not compatible. We will have a beta firmware up in a few days for the + and e models. That error was made on purpose to prevent the machine from mining and causing damage with incompatible firmware.<link> the proper one and flash via sd card and then flash the current bitmain firmware to return to stock until it is ready

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11229,"Date: 2022-11
Topic: Antminer u2 mining software
### Original post:
Is there some type of graphical interface I use to mine with my antminer u2s? Looking for something quick and easy to get them mining.

### Reply 1:
Have you tried to use the magnifying glass above? To search about the guide how to setup this unit?If not then I found few of them that you can try.This one below is the simple setup guide.- <link> other guide below using raspi or different OS- <link> <link> see which one will work. The last link is the newest setup that I found.

### Reply 2:
cgminer compiled with --enable-icarus runs them.Though that involves reading the README.

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22869,"Date: 2019-02
Topic: Quiet Antminer S15?
### Original post:
Hey guys.New guy on the block here, first post.I'm thinking of getting back into mining. I did it for a few weeks back in 2009 when Bitcoin first started. Got me 10$ worth when it was about 10 coins per penny.So anyways, the scene has changed a great deal in 10 years.I 'm thinking of buying an Antminer S15. But I live in an apartment complex. And the machine would have to be in my bedroom. I'm thinking that 76 dB is just too loud (vacuum cleaner loud). So I came up with a few different ideas on how I could go about making it more quiet.I just want to bounce those ideas off of you guys just to make sure I'm not completely out of my mind.1) Water cooling. I do have a lot of equipment and experience in computer water cooling. But I would have to design and build my own custom water blocks for the S15. And that would be prohibitively expensive. 2) Mineral oil submersion. I have seen some people online who submerge their entire computer in mineral oil. I have no experience at all in that. And it would be expensive for me to go that way. My rads and pumps are just not built to handle something as thick as oil.3) Replace the fans for a squirrel inline fan. The two fans that come with the <rest of post truncated>

### Reply 1:
The controller would need to see an rpm signal from somewhere within its specs otherwise it wont hash.

### Reply 2:
So this is a good idea if you want to feel like you are a part of the bitcoin network, but just know all the added costs of quieting the miner means your chances of ever even breaking even are pretty poor

### Reply 3:
Just as an FYI its the PSU fans that really make these units noisy, it is a grating high pitch whine

### Reply 4:
Yeah, small fast fans are annoying. But I don't have anything I can look at in person, only pics from the net.Where are the PSU fans located? What size? 60mm, or 100 mm fans? Do you have an idea of their approx. RPM?I hope I would be able to build a shroud that could supply some of the squirrel fan air to both the boards and the PSU. From the start, I was afraid that the PSU might be a source of noise, I just wasn't sure how much.So that might kind of takes the water cooling option off the table. If I have to design a water block for both the hash boards and the PSU, it's getting too pricey and too complicated.

### Reply 5:
Are you sure the standard fans are 38cfm?I'm only saying as I have just hooked up a Noctua 92mm fan to my Gekko USB Hub and that has a rating of 37.8cfm.Here is a link for replacement fans from a known mining gear supplier:-<link>

### Reply 6:
Why don't you go with option 1 which is where you have the experience? There are after market solutions for the S9, I'm sure the same (Chinese) sources will put out aftermarket water cooling kits for the S15.Did you take into account the maintenance hassle that involves mineral oil? There is another dielectric liquid used for refrigeration, cleaner like water but expensive:Option 3 sounds interesting as well, maybe with some 3d printed adapter?Any cheap case/cpu fan would happily report rpms, you can even remove the blades, and you don't need the fourth control wire either.

### Reply 7:
I can fake a PWM signal. Or as already pointed out, I could chop off the blades and let the fan spin purely for RPM signal.

### Reply 8:
I just would love to water cool it. As I know I would be able to render it silent, I already have enough rads to do that. But I have been unable to locate a source for water block. And the only block I was able to find for an S9 is aluminum. That would be a complete waste of money. I would only use copper blocks. Never put aluminum in a water loop.I would invest the time and money into designing and producing a water block for the S15 if I knew there would be others interested in buying some blocks to offset the cost. But the useful life of a miner is 2 years at most. Not sure there would be a market there. I'm pretty sure I would have to pay at least 1000$ for a prototype to be made.I can see computer guys water cooling because it's more of a hobby to them. But miners have profit in mind more than the hobby or cool factor. Not too many miners would justify paying upwards of 4-500$ for a water cooling system. I only briefly looked into mineral oil. It would be interesting if I could use my water rads/pumps/stuff for it. But I think oil would be too viscous for water rads and water pumps. Please tell me more.I have access to an English wheel and a metal shop. So the shroud or adapte<rest of post truncated>

### Reply 9:
Option 2 would be a nice option but the problem it can void the warranty of the miner unless if you are fine without warranty. Why not adding this option ""noise reduction box""?You can make your own customize design but this time you need to make a 2 holes on the front and back of the box for intake air and exhaust air. I'm not sure it would work on s15 miner but it can reduce the noise of s9 miner<rest of thread truncated>
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22858,"Date: 2019-01
Topic: Antminer T9 hash board temp/hashrate problem
### Original post:
Hi what could be the problem one of my T9 hash board is not showing the temperature reading? Its hashing but not showing any temps.<link>

### Reply 1:
your rejected shares are 125 while accepted are 1370 this makes it at almost 10% rejected, very bad still.also this firmware is auto-tune as i thought earlier, and now the picture confirms it, what does this do is the following.whatever freq you set,will be the base minimum, it will test it first and then move higher till it get's to the number that it ""thinks"" ideal for your chips, but sadly that's far from accurate in this case.so the only ""straight forward"" solution i can think of now is to flush another firmware that allows you set a static frequency. unless one of the members here have an easy way around using SSH to modify the firmware not to search for frequency, though i doubt it, i would just go straight to another firmware if i was you.should you go with that, ensure you using the correct fw , that T9 has a few of them.

### Reply 2:
I reduced the frequency from 550 to 500 to 481 now, but the frequency of the hash boards in miner status still same value at 666, dont know why. Its running for over 1 hour now i dont know if stale/HW/rejected is acceptable please check the image below.<link>

### Reply 3:
i found the problem, i was reading in some post here about the same problem as mine lower hash rates and the reason is the lack of quality power, house wiring issue perhaps. So what i did is i separated the plug to another wall of one of the T9, they used to be in the same socket and boom my hash rate came back to normal. Thanks guys i am new here and learning a lot from you.

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24173,"Date: 2023-10
Topic: My antminer s19 shows 0 real time hash rate
### Original post:
Hey everyone, i have an antminer s19 that shows normal temp and 88 chips for three hasboards and normal mining pool too for some reason tho real time hash rate is zero(theoretical hash rate is also where it should be) what can i do to fix this help pls!!!

### Reply 1:
theoretical has rate is ""theoretical"" so it means exactly nothing, it's hard to troubleshoot this kind of issue without a complete kernel log for the miner (after it has been running for at least 5-10 minutes) and a screenshot of the status page.A little history would also help, was this miner working fine before? the more detail the easier the troubleshooting.

### Reply 2:
If your miner is running you can see its hashing on the miner's dashboard you might be just excited to see your real-time hashrate on the pool you need to wait for a while before you can see the real-time hashrate on the pool.Can you mention here what pool do you mine? You can switch to another pool to try.

### Reply 3:
As already mentioned it would be helpful to get some more details.Some classic troubleshooting would be to restart the miner and check the connections (make sure that all cables for data connection and power are plugged in).Check the version of the firmware or u might wanna reset the miner configuration to the factory settings?

### Reply 4:
Here are some solutions for zero hash rate on the S19 Hashboard.<link> you can provide kernel log and status page screenshots like mikeywith said, others will be able to help you find the cause of the failure faster.

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24041,"Date: 2022-11
Topic: Avalon 1166pro issue with Fans not working on proper speed
### Original post:
Hello recently i received two new machines, Avalon 1166pro 81Th ... Both of the machines were overheating on the bottom of the machine and chip temperature was really high but even then Fans were working on 3500ish RPM , i found the solution to cool the machine is to manualy set fans to work on 70-80% speed but that solution is not that effective because each time machine restarts i have to set fans again and again... Is anyone else familiar with this issue or have any advices on how to fix this ? To fans automaticly work on proper speed so machine doesn't overheat. Thank you everyone.

### Reply 1:
How hot the miner is it? Would you mind to post the API logs here maybe we can find the issue under your logs? Setting the fan speed through the FMS tool is not permanent it will restore automatically to old settings after restart/reboot. Sometimes the issue is hardware the temp sensor can't able to sense the temp from your hashboard. My suggestion is to try to replug all cables in your hashboard and also don't forget to check all terminals if there is rust or corrosion clean them then plug all cables in. Another suggestion is you can also try aging it can calibrate all your hashboard which sometimes can fix issues related to temp sensing issues.

### Reply 2:
<truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':4996,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1207952.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[310] <truncated> LW[280041] MH[8 2 3] HW[13] DH[2.757%] Temp[17] TMax[100] TAvg[64] Fan1[3099] Fan2[3075] Fan3[3048] Fan4[3004] FanR[45%] Vo[322] PS[0 1218 1289 250 3220 1288 3491] PLL0[3346 3812 3792 2970] PLL1[933 1256 4443 7288] PLL2[4571 4770 3463 1116] GHSspd[83275.39] DHspd[2.708%] GHSmm[85544.32] GHSavg[68414.84] WU[955744.21] Freq[512.12] Led[0] MGHS[23860.97 23248.88 21304.98] MTmax[77 100 88] MTavg[64 66 63] TA[360] Core[A3201] PING[44] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[480 500 520 540] SF1[480 500 520 540] SF2[480 500 520 540] PVT_T0[ 67 65 67 69 68 65 66 66 68 71 68 67 69 69 70 72 73 65 64 70 69 72 68 66 69 71 69 71 69 65 65 68 69 69 69 65 64 65 66 69 68 67 67 64 68 64 62 61 62 63 64 64 66 61 59 60<rest of post truncated>

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16333,"Date: 2022-09
Topic: Antminer T15s and the APW8
### Original post:
Over the past year, the number of T15s running at our farm has dwindled from over 100 to less than 50. Today I finally got through processing all the dead units and discovered the PSU, the APW8 was the faulty component on nearly every single unit. I was able to tell this by putting a known good PSU on the 50 dead T15s, one at a time. Almost every single HB, CB, cable and fan was totally fine, just a bad PSU. Some totally dead, others just not delivering power correctly. So now I have 50+ totally functional T15s that are just missing their PSU. So my question is:Should I seek to buy 50 used APW8s to get these machines hashing again? Or just cut my losses and sell the working hashboards and control boards?Does anyone have experience with this PSU type? Will they continue to die at this rate if I buy more?

### Reply 1:
if you can clock to low they won't burn quicklybut if you set to high they will all burn out.I found this to be true with my t15's and my s15's they use the same psu. and they pull too much juice to run on high.

### Reply 2:
Wow, Bitmain really screwed the pooch on these then. Good to know. Wish I'd known a lot sooner lol. Do you have any experience repairing these PSUs? I don't have a PHD in power science but would be willing to try.

### Reply 3:
You can try to repair those dead PSUs there might be burned parts inside the PSU sometimes busted capacitors or rectifiers or maybe an open fuse replacing them could fix the issue. I searched a bit it seems that ZeusBTC has a guide on how to repair this PSU so I suggest you follow their step-by-step guide from this link below.- <link> If not, hire an Electronics expert to repair your PSUs.

### Reply 4:
Id go a step further and say if the metal capacitors by the power rails look exploded or leaky this is the only repair you can make without the electronics expert. They are the aluminum capped ones with the blue or red striped on the side. J

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23169,"Date: 2019-12
Topic: Who doing Solar
### Original post:
Fixing to start build a small solar BTC Farm. Who already doing it and whats your setup?Thinking6- Renogy 100 Watts 12 Volts Monocrystalline Solar Starter Kit24- 100ah batteries6- JUPITER 1500 Watt Continuous/3000 Watt Peak Modified Sine Wave Power Inverter5- BitMain S9

### Reply 1:
I know that philipma1957 does mine on solar and he knows his stuff, i don't have enough knowledge regarding the subject but i am good with numbers, go ahead and tell me how much is that solar going to cost and i will tell you if it is a good investment ,although if I had to answer without knowing the solar system cost in your country, and by using the figures i know of, it seems like a terrible idea, the ROI on this thing will probably be worse than buying an efficent gear and running it on-grid.I know for large operations and for tax proposes solar and mining do blend well, but as far as a 1.5kw solar system is concerned, it is probably a terrible idea.

### Reply 2:
You can make the numbers work if the government subsidizes the cost of the solar in one way or another. But without tax dollars helping out, you're looking at a cost of more than 10c/kWh if you use all the power from the array over a 25 year life. That's if you're doing a grid tied array and the power company is giving you even credit for the power you put back into the grid. If you are not grid tied then the battery system just makes it more expensive. If you are doing a huge industrial array it could be cheaper, but still not as cheap as a decent industrial power rate.

### Reply 3:
wont work,s9 pulls 1200 watts on avgso you could only run 1 , and your only going to get 8 hours at very best at 600 watts @ 85% efficiencyyour only going to be storing about 3000-4000 watts total , so only running that s9 for 3 hours at bestand 100 ah batts like the Walmart 104 ah hr are crap for this type of application might get 100 deep cycles at besti have a solar mining setup but i just do gpu as asic is a power hungry beasti have 11 290ah Deep cycle non spill-able sealed led acid batterys i got from a cell tower as they were changing the battery's every 3 years 40 of the 290 ah or 60 of the 190 ah are changed outcharging those battery's i have 8 300 watt commercial solar panels , charged by 4 mppt 80 amp units , even with this setup i only get 6 hrs @ 2400 watts @ 85% or about 12kwh into the batterys,now that its winter getting about 6-8 kwh --you can do your setup but it will take years to pay off if at all ,only reason i did mine , got the solar panels for free (they were presumed broken , but a diode fix was all that was needed )and got the battery's all for 400.

### Reply 4:
Forget batteries, get a grid tie inverter and use the grid itself as ""battery"".Then, get enough panels maybe 2000watts or so to power 1 S9. Of course less than that works, but you will be saving very little.You ""could"" go gridless and simply let it go off at nights. Don't mess with batteries as they are not cost effective. Maybe, just maybe Tesla's powerwall or similar, but not the traditional deep cyclers, they are just not cost effective.And given an S9 is nowadays valued for like 100$, i see little point in going out of your way for such an expense with batteries. TL;DR: Just panels + inverter or panels + grid tie inverter. No batteries.

### Reply 5:
exactly,i have 3000 watts into a sunny-boy 2500. gives about 2-2.5 kwh when the sun is up after 9 ish now it gets dark at 430 so the daily kwh output is reduced but during summer it cranks at full tilt for 9+ hours. but dead south with proper tilt angle is needed to get the best results.my battery setup is more of a labor of love , used mostly for gpu mining on old free hw. batterys reclaimed from cell tower. 8x 300 watt panels bought at auction for 15$ lot and amazon mppt chargers , its a cool system with an inverter & small cheep battery voltage cut off ciruts hooked up to a 200 amp solenoid .FMBattery protection circuit<link>

### Reply 6:
pretty bad a** setup for $15, I've been considering doing a trailer or something portable to solo mine . A expensive scratchoff lol.

### Reply 7:
read my post to have an idea about solar mining. it depends on how much you want to invest, and how many miners you will be using.consider the space that you have too.<link>

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10861,"Date: 2019-12
Topic: Innosilicon Terminator 3
### Original post:
Any specs, price or hash wise?

### Reply 1:
I guess they were waiting for bitmain to release the S15. If it is at the same price range and efficiency as the S15 Inno will be the new king.And with bitmain's requirement for KYC now, I'm definitely not buying from them any more.Personally I'm happy with Inno miners and support so far.

### Reply 2:
They suck at customer support. I have about 30 A4+ Miners with them. I need controllers from the past 3 months, they dont even reply to emails.

### Reply 3:
Innosilicon announces the preorder of revolutionary INNOSILICON Terminator 3, the most anticipated next gen BTC miner is coming soon! Email us: <truncated>

### Reply 4:
Good job leaking a bunch of email addresses today. Another reason to not do business with these guys

### Reply 5:
This is the first Im hearing about this, what happened?

### Reply 6:
I wonder if they were all geared up to announce and then the s15 best them in some regard. These are bold claims; despite being generic and not actually stating best or most efficient. I like to think that these companies pay attention to their competitors and change gears in response to the market and their competitors; but who can say. Most still tend to sell out of gear with little to no effort required beyond having competitive gear.

### Reply 7:
Yea, spec and pricing would be nice. Bitmain was fairly easy to read. Not really sure what to expect with the T3. If its next generation they going to hit 40-50 Th/s, 3-4k w? 7nm?

### Reply 8:
It's on their site now: <link> 2200W, but ships in 2.5 - 3.5 months from now at $2279. Competitive price and performance if not for the wait.

### Reply 9:
Looks like a winner. Date is a bit out though but diff looks sideways from what philip is saying. Could be worth it? The promotion needs a longer look.

### Reply 10:
Great info Phillip, having the s9's now vs Feb is a real killer. I'm going to wait until prices drop and then upgrade...

### Reply 11:
The Innosilicon Terminator3 miner adopts innovative architecture to generate powerful SHA256 43TH/s ( 5%) hash rate with only 2100W (+/- 10%). The 48.83W/TH performance is pushing the limit and will give you the unbeatable advantage in mining in the foreseeable future among all <truncated> T3 is designed to be the long lasting product with many improvement over its predecessors for longevity. It adopts the state-of-the-art technology with the innovative dynamic frequency scaling and extra cooling system for added efficiency and reliability. Yes, the miner is built for improved <truncated> 43TH/s (+/-5%)Power Consumption: 2100W ( +/- 10%, normal mode, at the wall, with 93% efficiency PSU, 25C temperature )Dimensions: Single Tube, <truncated> Weight: 10.02KGAmbient Temperature: 0-40Network Connection: EthernetNote: ASIC Boost Enabled with a proper license

### Reply 12:
Not worth it for delivery not happening until up to three months away. And overpriced by at least $500

### Reply 13:
3 months is a long time.even with sideways movement in diff We have been close to stable from Aug 24 to Nov 15 for that to keep up means BCH fork has to do Okay Keeping about 20% of hash not 10%Lets argue there is about 65,000,000,000 gh on the soon to be 3 coins.At the moment about 45-50,000,000,000 is on BTC and about 15-20,000,000,000 is on BCH/Forkthis is a very interesting dynamic which calls for careful hedging to survive what happens in the next 90 days.Ie Hodling BTC,BCH and having gear is good. what is the correct ratio I don't know.But lets analyze this gear 43th/2200 watts would be great if you had it today.But compare it to 3x s9i same hash uses 4200 watts. so 4.2 x 24 = 100 kwatts a day x 180 = 18000 kwatts at 10 cents 1800 usdwhat does this gear cost 2279 now for a usa guy it is 2900 + 200 to ship = 3100what are 3 s9i with psu's about 3 x 392 = 1176 - 165 in coupons = 1011 and 300 to ship so 1311so I lay out 1311 vs 3100 in both cases I get 43 th.I get 180days of mining for 1800 in power. so 1311 + 1800 = 3111 vs 3100the s-9's mined for 180 days at 43 thand the inno mined for 90 days at 43th.with perfectly flat diff and price 1719 usd in coin from the s9 and only 859u<rest of post truncated>

### Reply 14:
It is why your ratio of mining gear cash coins is very important.Ideally :some BTC some BCH/Forksome s9isome better gearsome cashand ratio varies for all of us depending on our setups, belief in crypto future etc.My gear mix is:S9iInno t2 turbo 24M10

### Reply 15:
Yesterday I fell in a coup from a fake Innosilicon website. Careful when searching on Google, the first site that appears is SCAM.Official site -> <truncated> site -> inosilicon.comNOTE: I do not know how, but the address in the place in the ""n"" is """" and because of that little difference I did not notice.REPORT SCAM: <link>

### Reply 16:
Thank you for your feedback.We have announced it on our official website and twitter. And we have also complained it <rest of thread truncated>
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    ""hardware_name"": ""A4+ Miners"",
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16597,"Date: 2023-09
Topic: Canaan Avalon A1466: Bridging Efficiency and Power in Modern Crypto Mining.
### Original post:
If ASIC manufacturer Canaan has problems with equipment supplies, then ASICs from Bitmain Antminer S21 will sell well, and these ASICs have a very good energy efficiency indicator. Does Canaan have problems producing new chips for these ASICs?

### Reply 1:
It's usually supplier issues, but I would say that, most likely, some of their third-party partners are not up to speed.

### Reply 2:
I belive Bitmain and Canaan has the same chip producer TSMCCan someone confirm that?

### Reply 3:
Some exciting updates for crypto enthusiasts and miners. Canaan has finally unveiled the much-anticipated Avalon 1466 Miner, and were here to break it down for you. The Big Reveal For the past few weeks, theres been a buzz on Twitter as Canaan teased us with this new release. Today, we have the full specs, price points, and even the shipping window details. So, lets dive into what makes this release so special. Specifications & Price The Canaan Avalon 1466 comes with two models:1.Air Cooled Model (A1466):-Hashrate: 150 <truncated> 21.5 <truncated> Approximately $2,100Its worth noting that its specs align closely with BitMains new S19J XP. The real game-changer? The Avalons price. At around $2,100, its a steal, especially when compared to the S19JXP which is hovering around $5,000.2.Liquid Cooled Model:-Hashrate: 170 <truncated> 19.5 <truncated> Calculated at 18.88$/terahashWhat stands out here is the price point of the air-cooled model. Its tantalizingly low, making it an appealing choice for many. Shipping Window Dilemma But theres a catch the shipping window. The Avalon 1466 wont be available for delivery until somewhere between Q1 to Q2 of 2024. Thats after the Bitcoin halving, <rest of post truncated>

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    ""hardware_name"": ""Canaan Avalon 1466"",
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    ""hardware_name"": ""Bitmain S19J XP"",
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10808,"Date: 2019-04
Topic: Quick Avalon A721 Review
### Original post:
Really nice! Wish they will accept bitcoin as a payment!

### Reply 1:
Efficiency is about 50% higher compared to S9? Too bad

### Reply 2:
Glad you got to play around with it. How are the heat and noise levels?

### Reply 3:
I assume thats 2 A7's in the cgminer webgui pic? Its showing 12TH/s avg...

### Reply 4:
Yes, it shows two devices A711-S-0-1 and A711-S-0-2.

### Reply 5:
Uh oh...I dont see a section in the GUI for error codes anymore. Those were so helpful with the A6

### Reply 6:
As it is the same cooling solution is, more or less the same. SchHave the feeling that the fan is more constant. No up/down spinning, thereby it appears slightly quieterBut the ambient temperature is also quite low...rightwow, I have not noticed that, thanks for the hint.I will ask them to bring it back/for the reasons

### Reply 7:
Hi mate, when will your shop be up? And at what price will be the avalon (including VAT) ?Also I didn't see any mention of noise output ?

### Reply 8:
shop is online again: <link> is depending on the ambient temperatureVolume is very subjective. But I would say quieter than S7/9, the same as the A6 I have deleted all posts in which was only speculated about the payment method and reasons. There is already a lot of it in the other topics.Let us focus on the device.

### Reply 9:
Its a good miner. But the company is the issue. One page says 3 month warranty. another page says 2 year warranty. i bought 2 avalont 721 and one went out after 2 months. i contacted them about the warrant 3/15/2017. they asked for more info and i got back to them the same day. its now 3/21/2017 and i emailed them 2 more times and then requested an RMA (per their site info) and i have not heard back from them. I dont think they honor their warranty. stay away!!!

### Reply 10:
pretty sure they will, please post your ticketIDand please provide a link to the page with the 2 years warranty, thx

### Reply 11:
I thought exactly the same, until I started to replace the thermal grease on Avalon6s of my fellow. The PCB is looking to be much more religiously designed than Bitmain's PCBs...And then I found this: <link> If I will not be lucky enough to buy X6 upgrade kits from Hotmine.io, I'll buy an Avalon 741.

### Reply 12:
I run one A721 down clocked to solo with, (set and forget lotto ticket)Voltage Offset: -2Minimum Fan%: 22More Options: <truncated> 0 --avalon7-freq 396With those settings it's really quiet.8 )

### Reply 13:
Luckily I have been able to play with the new A721 for a few days.I do not have much time right now. Therefore only a quick overview.Let me know what you want to know.It comes in a nice card box.unboxing video: <link> content:- Thank you card / quick start guide- Avalon 721- USB Converter 3 (AUC3)- AUC3 I2C 5PIN cablefirst impressions:- Very good build quality, as we are used from the A6.- works stable with 6 Th/s- same webinterface as the A6I measured the power consumption with slightly <1000W.But this will may change with the next/final firmware. They working hard on it I have measured with an Enermax Platimax EPM1000EWT as PSU and an intermediate plug, not with a fluke.So it is only a good approximation ;-) Yes, the efficiency is currently not as good as that of Bitmain.But since the 16nm hardware lifetime will be longer, I rate the build quality and customer service as more important. And hope for a firmware update.useful links:<link> <link> will be able to buy them from within the EU soon.check asicminer-shop.de for that... (down for maintance at the moment)some quick <truncated> This information is only my private opinion and does not constitute expert advice. No warranty is <rest of post truncated>

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24054,"Date: 2022-12
Topic: Stop fans from going 100% at startup (Braiins OS+)
### Original post:
Is there a way to stop the fans (Antminer S9) from going to 100% at startup. I use Braiins OS+ and have the noise level very low because I use only 600W. Since I need to restart the miner quite a few times depending on availability of power, this would be very helpful.

### Reply 1:
Probably better to ask in the dedicated software thread here:-<link>

### Reply 2:
If the units doesn't have abnormal temp rise the fan shouldn't run at high speed unless if its set to auto with low target temp.You can switch it from auto mode to manual mode if you want to run the fan at fixed speed.Read more about fan control here below- <link>

### Reply 3:
I think you missed the keyword here which is ""startup"", the fans will spin at 100% when the miner boots/startup, the firmware does that to check if the fans meet the required RPMs or not, it's standard on all firmware version both stock and custom, Vnish has an option called ""Quiet fan mode at startup"" which would bypass the full fan spin and starts at the required or specified static speed, I don't think Braiins has that (I don't remember seeing it at least on the GUI) but maybe they have some command for that, keep in mind that move is a bit risky and I would advise against it.

### Reply 4:
Thanks for the Tip! What do you meant, that the move is risky? My S9 is configured that it can run at 1% fan speed at all time, so there should not be an issue?

### Reply 5:
The risk comes when the room temperature or air circulation changes for whatever reason and the miner gets to the point where it needs the fans to be spin at say 5krpm but then the ""untested"" fans can't perform which will cause the miner to overheat.If you control all those variables and you are pretty sure the miner won't need high fan RPM then that is a different story and the risk does not apply much.

### Reply 6:
I actually solved this issue with an external 12v fan controller. As soon as the PSU gets power the fans will spin at my chosen rate. If the miner gets to the hot temperature set by me it will simply turn of instantly.

### Reply 7:
Would be great if you could post more details and/or pictures showing how you did that, I am also curious if you did ask BO+ support for help, that firmware seems to be full of features, I wouldn't be surprised if they had that already built-in and just needs some sort of activation via CLI since there is nothing in GUI for that feature.

### Reply 8:
What OS do you currently using? Is it still Braiins or stock firmware?Because if you revert to stock firmware without bypassing the fan check you will always get some error and the miner will not work properly. If Braiins then it still has an error fan so you still need to bypass or disable the fan check.

### Reply 9:
I used this device to completely outsource the fans from the actual miner and have them run on a constant speed as soon as there is power: <link> It is powered by a 6 Pin PCI-Power plug that can be connected with a simple splitter from the existing ones. Another great benefit is that it is possible to use an 120mm fan that you want since the miner is not responsible anymore for the fans.In the miner the setting was changed to immersion mode, which doesnt require fans at all. It will simply shut of the miner at a specific temperature (I set 85 Celsius), that temperature will not be reached since my fans are going at a fixed speed that keeps the miner at around 60-70 Celsius.Also I asked in the official Brains OS support thread, if there is a software solution to stop the fan test at the beginning but apparently there is none. So for 11 USD I think it is a quiete good and simple solution.In the end it looks like this:As said above the solution is the immersion mode of brains os+

### Reply 10:
You people seem to be misled about something, this is sounding like an urban myth...There is no ""test"". The fans do that themselves, apply power and they go to 100% before the firmware is even loaded to tell them to slow down (You can remove the fourth blue wire, and see for yourselves, its their default behavior).Yeah a hw solution (external power) would work since, it can immediately force them to whatever speed. Other people just replace the fans with either low rpm phanteks/noctua 140mm with adapters or a large duct inline large fan (external cooling).

### Reply 11:
I won't pretend to know anything about how those fans work, but I am sure the quiet fan start-up works on Vnish, I can't recall the exact % the fan spins at when the miner starts, but it's too quiet, probably something between 10-20% because it was a lot quieter with that option enabled, of course, I don't know how they manage to do it (just in case anyone asks me).However, the theory of fans running full blast as soon as they get power is true and I can confirm that. It has been a while since I mined at home so I don't use the function anymore, but IIRC, the fan wo<rest of thread truncated>
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13739,"Date: 2022-01
Topic: Customizable Miner with Customizable Algorithm
### Original post:
I want to customize the available algorithms in a customizable miner. Let's say, I want to customize SHA256 in the way that it starts to generate Hash from Nonce value 10k instead of 1. Even after change, how can I integrate it into miner (e.g XMRig)?

### Reply 1:
In CPU miner program, you can setup nonce from 10k start to hash out a block header data. But,In ASIC miner program, the chip is setup to search any nonces which produce a small hash value. the chip automatically brute force try nonces in all range of 0x00 to 0xffffffff. And asic chip is working extreme fast, 10k times trials cost no much time. eg. my asic miner, 25 minutes period, hash out 13,000 block headers (work), produce 6965 nonces which produce small hash values, start 00000000. (pass 1st test).I understand your idea about algorithems. But, now, asic chip is widely used in mining device. the nonce is not issue for successful in mining bitcoin. It is a better (or optimalized) block header (work) which may enhance your chance to solve a bitcoin. Your algorithms should focus on how to get better block headers (works) to reduce your workloads against big pools or avoid to repeat hashing the same block headers which has been hashed out by fast miners in your pool. Other ways is to build a 1PH/s + hashrate miner. see my other post.

### Reply 2:
Thank you for your reply!1) Can you share the link of your post?2) Also, can you tell me where specifically I can setup start nonce in CPU miner program(any)? Correct me if I am wrong, I need to clone the miner program from Git and after making my changes in the algo, build it?

### Reply 3:
Thank you for your reply!1) Can you share the link of your post?<link> Also, can you tell me where specifically I can setup start nonce in CPU miner program(any)? Correct me if I am wrong, I need to clone the miner program from Git and after making my changes in the algo, build it?cpuminer programs: 1. these are old software, you have to spend time to let these programs run (rebuild).<link> google ""cgminer + cpuminer""2. or you can modify cgminer back into cpu mode. The kanoi version of cgminer<link> hard, Good luck.

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16535,"Date: 2023-06
Topic: What's the differ between mining and trading?
### Original post:
I will love to understand the difference between mining and trading? To some point I see trading more easier and convenient than mining but I guess is before I don't full understand how mining works! Most mining are done with machines but trading is humans strategies, so am definitely not inclined with their difference. Please help us with your knowledge, we're all learning.

### Reply 1:
Mining and trading are completely different, but I believe you already know that. Mining involves using powerful computers validate transactions on the blockchain network. This process requires a lot of energy and computing power. On the other hand, trading involves buying and selling cryptocurrency on an exchange, with the goal of making a profit. Trading relies on human strategies and market analysis. Both methods have their pros and cons, but trading is generally more convenient and accessible to beginners than mining.

### Reply 2:
In simple terms, mining means you are rendering service to the Bitcoin network and you get rewarded for that, regardless of what the DCA value and market volatilities and despite all of that, a miner will get his rewards for each block he mind. Trading on the other hand is based on buying and selling of bitcoin and other assets on the exchange, with trading, there are two ways is. Either you lose or you gain and the thing is certain that you must have to invest money into trading and there is the possibility that you may lose your entire capital if you trade on the wrong stock.

### Reply 3:
In simple terms Look at mining in a more conventional way. Like mining gold. You will need tools, equipment and effort to discover and extract that gold from the earth. Once you get it, you can either stash it for the future or sell it off on the market for money.Mining is more like a business you invest in for long term sustainability if things go well. But not everyone can afford the equipment or the patience to wait long term for return of investment. Here is where trading comes in. Even with your $500 or less, you can still try to trade and get some profit.Please note that there is no guarantee of profits short or long term. Every form of investment is a risk and we always hope that with the risks we take, we get the reward in the end.

### Reply 4:
Mining and trading are different, they are not mutually exclusive, maybe only at the point where profit can be made. Then there is no cheap investment in mining, but it requires a large investment, while in trading, you can start with a large or small capital. In addition to that, it is also necessary for mining to have knowledge of Bitcoin, it cannot be without it, then it is also necessary that you have constant monitoring in mining so that you can see what maintenance is needed, while in trading you need to have skills in understanding the chart and using tools that will not waste your trading activity.

### Reply 5:
Trading can do with a machine too, tho is called trading bot and there is dozen of example out there. The Simply way difference between mining and trading are Mining is uses machine to generate more money basically you just buy some efficient miner from Manufacturer like Antminer or Avalon and then give em internet and power you will get return. While trading is way to generate more money from volatility simply version when the price down you buy and when the price up you sell so you can get profit from different price rate. But you need lot of knowledge and skill rather than mining

### Reply 6:
There are many differences between mining and trading. By mining we generally mean producing bitcoins and by trading we mean using bitcoins to increase bitcoins. If mining is done properly then mining is more profitable but must be done properly and the production cost must be very low only then can mining be profitable. Many times it is seen that many people spend a lot of money while mining but in the end they don't succeed in mining and as a result they lose their entire money. Again there is a possibility of profit in trading but there is no guarantee of money. As there is a possibility of increasing money by trading, there is a possibility of losing money if the market goes down. Mining trading is both profitable but we have to do it the right way.

### Reply 7:
Trading allows you to be not tied to a certain place, and you can travel all the time if you are a successful trader. Mining is like your own production, which constantly requires your control every day of the year. You will be constantly busy with business, and do not think that mining is a passive income.

### Reply 8:
Trading is easier than mining if you have no money, you can start trading with small amount of money and you need a lot of money to start mining Bitcoin. You won't be able to travel around if you are a Bitcoin miner because mining is something that has everything to do with electrici<rest of thread truncated>
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23236,"Date: 2020-04
Topic: T17 will not hold hashrate
### Original post:
You mentioned all the details but missed out one crucial element which is WHERE does the hashrate fluctuate? is it stable at 40-42th on the miner's status page but goes below on the mining pool side? or is it on the miner itself or both?Please answer that question and provide the following:1- Screenshots of the miner status page + the pool status 2- Copy paste the kernel log of the miner, use the code format Code:Paste the kernel log hereIn general this usually an 'easy to fix' problem, I will take you to step by step to fix this ""hopefully"", meanwhile you can this and this.Seriously dude we as non-us-citizens should start demanding that people write temps in Celsius scale. When I read 80 degrees I thought it was a toaster at first.

### Reply 1:
Picked up 3 - T17`s. My Internet speed is 198meg. Runs up to almost 40 Hashrate then over next hour it drops slowly. It will go back up a small amount but, continues on downward. It went to 18.58 and at 24.15 now.Very cool weather here right now. Just checked and temperature in the room is 80 degrees.I am new to this and I don't understand a lot. I have been watching youtubes and reading but, cant understand why I cant keep 40plus hashrate.Update... I use a Charter Spectrum Modem (Arris) with a Netgear NightHawk R7000 Router (just upgraded software) and from there I am Cat5 to the T17.The router took off with blazing speeds and I got 69 hashrate, soon, 45, then 35, now 23.22....I think it is my cable TV wire. I just realized its 26 years old. Installed before we ever used Internet over cable. Will replace it tomorrow.Any advise or direction would be helpful.Alabama USA

### Reply 2:
I suppose you will be demandingmeters and klicks vs yards and miles. . no waypersonally we should all be using kelvin scale for temp.80 would be super fucking cold.as 0 is the start of the scale no negatives at all.to op my answer to your poll is maybe.please post logs I will read and attempt to help you.do you use a switch to access router.is so what is the switchis it 100 mb or gig speed switch.an eight portor 16or 32or 48

### Reply 3:
80 degrees Fahrenheit or Celsius? I guess it's Fahrenheit.Much better put the kernel logs here and the screenshot of the miner status.Maybe we can find the issue under your kernel logs.It might be a PSU issue, Hashboard(ASIC chip is Damaged) or Pool issue(High ping).

### Reply 4:
It's orange vs gray if the ""grey"" people stop answering any questions that have Fahrenheit in them, I bet many will go unanswered , that was a lame joke anyway, while I prefer to see Celsius so that I don't have to use google for that, but that won't stop me from helping here.I hardly understand F let alone K. My initial guess is that his router is somehow dropping packets from itself to the pool, and that his miner's status page shows perfect reading but the pool doesn't, however, I don't want to jump to conclusions.

### Reply 5:
my machine has been running for over 2 weeks so my log is longsection 1 fits on this post.Code:Machine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 195352K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss, 34024K reserved, 16384K cma-reserved, 0K highmem)Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xffc00000 - 0xfff00000 (3072 kB) vmalloc : 0xcf800000 - 0xff800000 ( 768 MB) lowmem : 0xc0000000 - 0xcf000000 ( 240 MB) pkmap : 0xbf<rest of post truncated>

### Reply 6:
section 2Code:2020-03-23 00:17:49 <truncated> The avg rate is 40046.76 in 30 mins, PCB temperature between 47 ~ 56.2020-03-23 00:48:17 <truncated> The avg rate is 39633.54 in 30 mins, PCB temperature between 46 ~ 56.2020-03-23 01:18:44 <truncated> The avg rate is 40061.46 in 30 mins, PCB temperature between 46 ~ 56.2020-03-23 01:49:11 <truncated> The avg rate is 39894.76 in 30 mins, PCB temperature between 46 ~ 57.2020-03-23 02:19:39 <truncated> The avg rate is 39915.64 in 30 mins, PCB temperature between 46 ~ 57.2020-03-23 02:50:07 <truncated> The avg rate is 40028.72 in 30 mins, PCB temperature between 46 ~ 57.2020-03-23 03:20:34 <truncated> The avg rate is 40071.09 in 30 mins, PCB temperature between 45 ~ 56.2020-03-23 03:51:01 <truncated> The avg rate is 39898.80 <rest of thread truncated>
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13657,"Date: 2020-08
Topic: Release S17E custom firmware
### Original post:
S9k/S9Se ?

### Reply 1:
First of all allow me to congratulate on your new firmware, I have a few questions regarding how are you planning to distribute the firmware, in other words how do you ensure that other people won't re-sell it, I understand that trusted people of the community like your first client Favebook won't be doing that, but what about others?Also the price tag should be discussed in public IMO, pricing is very difficulty and it's almost impossible to get the perfect number that would work well for you and the clients, so perhabs a community discussion on the subject will be very helpful, of course you could ignore my suggestion and keep the sales private, I just think it would sell out a lot better when price is known and the community ""agrees"" to it.

### Reply 2:
AFAIK when I was talking with him about it earlier he though $500 for unlimited use was a rough figure.Again, no idea how he would enforce that without miners calling home, not sure how the others do it, cant think that they would have the resources for that much of a foolproof DRM process, which is probably why they have the self-mining to get their fee.

### Reply 3:
Fantastic work I know a lot of miners will be very happy to see this keep up the great work! Tried to find you on Discord but was unable to find you what is your channel invite link?

### Reply 4:
Yes, indeed it is true, I have given access to thierry4wd so he can finish developing firmware for S17e. It works as it should, in my case I was interested in underclocking due to ridiculous hot days that we have during the summer (and that we will have over next years - thank you very much global warming).I will not be posting too long review here as I have already written a full one which you can check at bottom of my post.This is the first S17e firmware that is legit and that I am aware of on this forum and in general. I am happy to see that people are taking after some other firmware creators and accepting one-time payment as method of selling their firmware (I do not personally like firmwares with fee since I use my machines for long time and that costs much more than if it was one-time payment).However, as I am not currently aware of the price I cannot say if it is worth it or not, but I think he will not overprice it like some people do.I cannot vouch that there is no malware or backdoor built-in but I highly doubt that there is one as mikeywith and Biffa vouched for this person (check the thread below for that too).As of writing this post, my miner has been working around 4<rest of post truncated>

### Reply 5:
That is the first thing I asked him as well once he finished the firmware. He could do something like chipless - licence based?He hasn't yet decided on price tag afaik. Since he is the only one who has working S17e (AFAIK) he could put a li'l bit higher price tag (not that I want that since I will probably be buying future firmware from him too...) but let's hope he comes up with number somewhere in middle where it's affordable but not free.

### Reply 6:
Big oooof, 500$ might be a over the top, maybe it's good if you want to sell it to resellers, but it's bad for small miners like me or someone who has only a few of S17e (which can be bought for roughly 900$ nowadays so you get my point).Chipless has made some kind of licence based firmware where you need to type in correct licence in miner configuration so the miner can start working (not really sure if they are calling home or he has implemented a list of 1000x licences or more in every firmware and you just need to guess one or he gives it to you, but since it's rather a lot of characters, it will probably be impossible to guess). It's per miner so you cannot share it or if you do, you might be screwed. Similar thing could be done here.thierry4wd could ask chipless for assistance but not sure if he will help.Not sure he has a channel yet, we used discord and discussed everything via PMs, just add djay#4807 as friend and pm him.

### Reply 7:
we did some work today. we tried getting a t17e to work.Still needs work.I used discord and teamviewer.the farm has a test network of four or five unitson a verizon network. does not work. for security the main farm is on a second network. serviced by a different modem.i do this with all new gear.we will do a new test later on.@ thierry4wd i will leave the firmware on it.let me know when you want access via teamviewer.

### Reply 8:
If it were my firmware I would probably price it at 3% of 1 year of mining, this is based on the fact that 3% is about the average fees for custom firmware, and that 1 years is the average lifetime for these lousy gears.As of today the S17e makes about $6.48 a day, or $195 a month so that's 0.016 BTC / month so that will be 0.192BTC a year and 3% of that is 0.00576BTC or $68, can be rounded to 70$ per miner.The price is good for the buyer if their gear manges to stay al<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""S17e"",
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    ""hardware_name"": ""t17e"",
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]"
23838,"Date: 2022-01
Topic: Diminishing Hash Rate Over Time
### Original post:
Hello allHave a Canaan AvalonMiner 1166 Pro that has been losing about ~0.1TH/s per day. The boards are not overheating (62 C, 65 C, 67 C,), and the fan speeds remain under 60% (~4500 RPM). These <truncated> conditions have remained fairly constant for over a month but now the hash rate seems to be slowly but consistently decreasing. I am not clear as to what could be causing this behavior. The ASIC was advertised to get 81 TH/s, but really never performed above 79 TH/s when I first got it. For months it performed in the 76-78 range and now is around 73.6 TH/s and decreasing with each passing day.Any thoughts? Actions I can take? Should the boards vary that much in temperature?Thank you

### Reply 1:
Have you tried to reboot the miner? Let see if it could fix the issue.If not then post the API logs here and don't forget to put them on the ""insert tag"" with a # icon or use pastebin.com and paste the URL here.The hashboard temp sensor is different so maybe we can see the real temp of the chip under PVT_T0, T1, T2, and maybe one of the chips is overheating that cause this issue?

### Reply 2:
Is it clean. A piece of dirt could cause a single hot chip.

### Reply 3:
Here are the logs. In fact as I am typing this up my miner just restarted its self. It seems to do this ~1x per week, unclear why. This time was <4 days. These are the logs minutes before it just <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':7,'Local <truncated> <truncated> Blocks':526,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1434728.0] NETFAIL[301699 301710 301983 301993 316084 316095 300128 300188] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[316092] <truncated> LW[314964030] MH[8426 9304 27614] HW[45344] DH[9.902%] Temp[23] TMax[101] TAvg[65] Fan1[4486] Fan2[4532] Fan3[4418] Fan4[4456] FanR[59%] Vo[311] PS[0 1222 1245 257 3199 1244] PLL0[8825 2657 1646 792] PLL1[8478 2872 2046 721] PLL2[10997 2266 521 136] GHSspd[74962.26] DHspd[8.413%] GHSmm[83341.10] GHSavg[73574.56] WU[1027824.73] Freq[498.93] Led[0] MGHS[25062.39 25262.79 23249.38] MTmax[101 76 72] MTavg[67 65 62] TA[360] Core[A3201] PING[28] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] EC<rest of post truncated>

### Reply 4:
Hello EveryoneI had the same issue with 1166 pro-81TH but from yesterday, my miner keeps rebooting itself. Can anyone help me to diagnose the problem?Here is the api <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> Failures':0,'Local Work':7735,'Remote <truncated> Blocks':1,'Total <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1207440.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[277] <truncated> LW[262842] MH[0 13 2] HW[15] DH[4.343%] Temp[29] TMax[113] TAvg[63] Fan1[2570] Fan2[2570] Fan3[2594] Fan4[2602] FanR[33%] Vo[317] PS[0 1212 1268 200 2532 1268] PLL0[3515 457 857 9091] PLL1[5435 404 659 7422] PLL2[2587 526 911 9896] GHSspd[66537.80] DHspd[4.277%] GHSmm[69654.08] GHSavg[61016.77] WU[852394.42] Freq[416.99] Led[0] MGHS[20122.38 19171.72 21722.67] MTmax[100 113 86] MTavg[66 62 62] TA[360] Core[A3201] PING[144] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[4] SF0[376 396 416 436] SF1[376 396 416 436] SF2[376 396 416 436] PVT_T0[ 66 69 66<rest of post truncated>

### Reply 5:
The ECMM gives you a number 4(Error Code MM board).Maybe the MM board (control board) is loosely connected to the hash boards?Or maybe the MM board is damaged?Do you have another MM board to try?You can find the log text description guide here <link> Canaan documents: <link>

### Reply 6:
Reading the doc on ECMM:What does 4 mean here? Seems like not specified? I don;t have any extra spare parts

### Reply 7:
I could not find meaning for number 4.Can you try tightening the connection between MM board and the hash boards?Just in case if it is loose after transport or something.

### Reply 8:
I'm not sure what MMboard stands for or even which part of the miner that is. Internet searching hasn't been helpful for this term unfortuantely.

### Reply 9:
The help is more close than you think, have a look at my Avalon troubleshooting guide <link> the control board for your hashboards.

### Reply 10:
perfect thank you. Do you suggest I just un-plug and replug the ribbon cable, tighten any screws on the MM board, and ensure the hashboards are slotted in well again? Anything else?

### Reply 11:
Yes, that's pretty much all there is to it.

### Reply 12:
I think most asic miners are rated at +-5% so 3-4TH missing on an 81TH miner is pretty normal, what's not nor<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""hashboard temp sensor"",
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  },
  {
    ""hardware_name"": ""MM board (control board)"",
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    ""hardware_name"": ""hash boards"",
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]"
16322,"Date: 2022-08
Topic: Gas Supply Available for New Mine Development in Canada
### Original post:
Hello,Posting on behalf of Campus Energy Partners, a Calgary, AB, based energy infrastructure company, to see if there is interest in a new development in Canada. We have access to highly reliable and sales-quality natural gas in the province and can accommodate crypto mining projects anywhere from 10MW up to 200MW at our various physical infrastructure sites. We are in the process of successfully completing a 9.9MW project and are keen to explore other opportunities should there be interest.Feel free to send me a PM or reply if you have any other questions or are interested in discussing further.Thank you! <link>

### Reply 1:
We would like to discuss further. I tried sending a pm but pms from newbies were not accepted. I can be reached at <truncated>

",[]
24136,"Date: 2023-06
Topic: Avalon 1041 help
### Original post:
I have a bunch of Avalon 1041's (They are 1046's but they say 1041 on the side).Every once in a while, one of them will just stop mining. They always do the same thing. I am attaching a screenshot of the log and status screen. Has anyone seen this before or know how to fix this issue? Maybe a PSU issue? If it was a bad hashboard you would think it would mine at a lower speed. After reboot they just come up the same way. I have been just putting them in a pile and grabbing a new one to replace them when this happens. I probably have 20 with the same issue.Any help would be great.Imgur link<link> SOLUTION. If anyone has the same problem. It is the small PSU fans. One of them freezes up and needs to be replaced.

### Reply 1:
can you just add another one in series and plug it into the control box (raspberry pi module) and have it ""just work""?

### Reply 2:
I think yes if it does not have Ethernet socket then it requires control box/Raspberry pi and auc3.However, base on the old guide from this link below it is already have a built-in controller so you don't need them in order to communicate to the unit unlike old models like 721, 741, 761, 821 and 841 that requires both auc3 and control box.- <link>

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    ""hardware_name"": ""Avalon 1046"",
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  },
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    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""hashboard"",
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    ""hardware_name"": ""PSU fans"",
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    ""hardware_name"": ""Ethernet socket"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""auc3"",
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]"
13846,"Date: 2023-09
Topic: Bitaxe ESP32 miner firmware released!
### Original post:
I am very excited to announce the first release of ESP-Miner! <link> This is fully open source bitcoin mining firmware for the ESP32 on the (also open source) Bitaxe ASIC bitcoin miner. <link>

### Reply 1:
Nicejob skot im surprised nobody has posted on this. projects like this are what would make blockchain a lot more fun im not sure why someone hasnt made something like this prior. i have been following along with your progress i dont plan to build but i admire the work involved. it is truly amazing the work of giants in tech field you certainly are one of them.

### Reply 2:
Thanks unicornmangle! Tell your friends; we're always excited to have more users and contributors. Let's keep Bitcoin mining open source!

### Reply 3:
Wow Skot, i am impressed by the wonderful work done, it show that you are a true believer and a contributor to Bitcoin network thank for the info and the effort you put in.I think I would personally do some advertising on this open source miner.

### Reply 4:
Thanks Makus! Thats awesome to hear. Im only a minority contributor to esp-miner, there are several talented folks working on this..In related news, we have just merged initial BM1366 (S19XP) support into master! Web configuration dashboard is in the works too.

### Reply 5:
Thank you for your work, and thanks to the other contributors in the amazing BTC community that made this:We can now take a look at the 4139 Nerdminers and 18 Bitaxes connected to this solo pool: <link> have a feeling that open-source miners are going to end up being a big deal.

### Reply 6:
Not sure why you are trying to promote tiny garbage CPU/GPU miners that will never find a block.4139 miners wasting electricity seems like a really bad idea ...Seems you're the type to try fool people into buying stuff that will never give a return and waste electricity.

### Reply 7:
I'll bet 4097 of those miners (99%) are fully aware of their odds of finding a block. Yet they do it anyways. Don't forget; there is a lot more people can contribute to Bitcoin and mining than massive hashrate.<link>

### Reply 8:
OK I'll give the more accurate and less liked answer then ...Those 4139 will never get a reward.It's as simple as that.Firstly the BTC <truncated> the pool was paying PPS then the 209MH/s divided by 4139 miners = 50kH/s eachAt the current difficulty, 100% PPS will pay 0.002321815301 BTC a day per 1 PH/s1 PH/s = 10^15 H/s50kH/s = 50 x 10^3 H/sso 50KH/s = 0.002321815301 x 50 x 10^3 / 10^15 BTC a day = 1.16 x 10^-5 sats a dayNow doing a way over estimate assuming that diff will never change (which is wrong) that means at PPS it would take 86139 days to earn 1 satoshiOf course it will take way longer than this, earning even less, but anyway, ZERO return.PPLNS:Lets pretend they will find a block on the pool and share the 6.25 reward and not do a runner with it ...Each of those guys is doing 50kH/s on a pool that is currently showing around 110TH/sLets say it never gets larger than 110TH/s, which would make this calculation worse = reward less satoshis per block for the 50kH/s minersSo of the reward they'd get (6.25 * 10 ^ 8 ) x (50 * 10 ^ 50) / (110 * 10 ^ 12) satsSo what's this number? 0.284 sats per block you find.So with that 110TH/s pool you wanna hope you'll find 4 blocks before th<rest of post truncated>

### Reply 9:
Yes, that sounds about right for the Nerdminer. I'm not sure which project you're talking about. Nerdminer and bitaxe are open source, so if you're concerned they are doing something fishy, check out the source code? (they also have nothing to do with the web or your desktop CPU)

### Reply 10:
hmm, the person who posted the pool status is a different person, Skot is Bitaxe, Drawesome is <truncated> so ya, I think you got things mixed up.Also, as far as I know, NerdMiner is an opensource project that you can DIY on a cheap Microcontroller, It is not even Windows based so it can't act as ""CPU"" virus miner, but ya that's all I know, of course, I don't disagree that using something like ESP32 to mine BTC is just a waste of money, I hope anyone doing that is aware of that fact that they will most certainly not get any rewards.

### Reply 11:
Wow, so much misinformation in just one post. Just to make it clear:1. I am not promoting CPU/GPU mining, but open hardware mining like nerdminer or bitaxe. I think it is more than obvious.2. I have nothing to do with the public-pool website, nor with nerdminers or bitaxes contributors (I have only flashed some Nerdminers and now I am excited to do the same with bitaxe). When I say ""we,"" I mean it because I am part of the community that is joining this phenomenon and I hope it grows a lot.3. Public-pool is, as its name indicates, a public pool and anyone who wants to can join using CPU or GPU, I don't think the pursue of the pool is to promote that kind of mining (completely absurd) but to give the opportunity to have a low share for track<rest of thread truncated>
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    ""hardware_name"": ""Bitaxe ASIC bitcoin miner"",
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13634,"Date: 2019-11
Topic: SSH Unlock Tool For Antminer S17 and T17
### Original post:
is it applicable to S9K?

### Reply 1:
If you are running an S9, S9i, S9j, S9k, S9se with May 2019 firmware or older. You can remove signature check using this file: <link> and unlock ssh.

### Reply 2:
mine has fw from July 2019, where to get May'19 fw?

### Reply 3:
If that signature file did not work for you.Flash using sd card: <link> Just updated the program a little bit. Made it smaller and some translation fixes. Along with pausing the replace script.I will add more to it later and simplify it a bit more as testing showed some people are bad at instructions xD

","[
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    ""hardware_name"": ""Antminer S17"",
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    ""hardware_name"": ""Antminer T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9se"",
    ""hardware_is_owned"": true
  }
]"
10864,"Date: 2019-12
Topic: My Pangolin Nightmare now doubled
### Original post:
And now my second M20 died after less than 5 hours. Glad I did not sent it off to host before testing.So almost 5 months since paid for in full..... and I have two useless miners.The first unit (Returned) arrived in Shenzhen 2 days ago but has not been picked-up yet.

### Reply 1:
to up date my dead pangolin m20s.it fried the psu.not surprised as they really pushed the shit out of it.it drew 3400 watts 24/7/365 out of a rated 3500.it did run from may to dec. it was a beta model.i found a company in north carolinahmtechthey sold me a new psu for 275 shipped in two days.the psu frompangolin would have been 150 + 58 = 208 plus some tax maybe 225.so,it did cost more but i got it four or five days faster then pangolin so it earns 40-50 bucks in that time it is breakeven.since my gear was out of warranty and beta. i had a p20 psu not a p21i had may firmware for a h6 controller not a h3.so i flashed with pangolin liinked firmware. it did not work spent time on microbt website found h3 and h6 firmware. flashed with h6it took and my m20s is running. lost 17 days of mining and paid 275 for psu.could be worse. i could have your issues which would be more costly.

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    ""hardware_name"": ""PSU"",
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  },
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    ""hardware_name"": ""P20 PSU"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""H6 controller"",
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11304,"Date: 2023-05
Topic: Avalon Miner Event
### Original post:
Please put more highlight for the kind of event you are taking about. This your thread is empty and there is nothing to comment here. Please can you tell us more about the event that is going to happen in Canaan?

### Reply 1:
I think they are talking about that :<link>

### Reply 2:
lol - they even forgot their own history They started with the Icarus FPGA miner at the beginning 2012 which Ng Zhang made and Xiangfu wrote the cgminer driver for(and I helped a little bit to debug it)

### Reply 3:
Since it bears repeating here is the link to their program again: <link> is running from May 1, 2023, to December 31, 2023.Too bad they stopped the program at the A6's. My 1st Avalon's were the A721's that I switched to in protest of Bitmain's attempt to push their new BCH coin by no longer accepting BTC. You could only pay with wirexfr or use their crapcoin. Coupled with s9 quality going down the tubes around then it was the last straw.Still have the 2x 721's and 2x 741's followed by a couple dozen 841's and 3x 941's. Of them all they all still work and only 5 failures - 2 fans dying on each of the 721's, one on a 841 as well as 1 on a 941. The only electronics failure is a dead PMU on one of the 841's. Considering the many years of them running 24x7x365 that is one excellent track record. Those are all offline now of course and were replaced by A10's and one A12 - to-date, zero issues with them.Only God knows how many s9 fans, hash boards and control boards died on me - at least several dozen

### Reply 4:
Canaan Unveils Avalon Made A1366I Immersion Cooled Miner. The price is still unknown.We're showcasing our new product the #AvalonMade A1366I Immersion Cooling Miner, with a hashrate of 165TH/s 5% and power efficiency of 30J/T 5%. So, join us at #Bitcoin2023 and come see what all the fuss is about!<link>

### Reply 5:
Why so high?Current tech is 23-25J/TH

### Reply 6:
It is a 4950 watt machine plus the watts for your immersion tank. So maybe 5100 watts for 165thand the cost of the immersion tank the fluid the pump the radiator.I have been continuously frustrated by my attempts to get my liquid cooler delivered from octominerI simply cant get a good answer from them.I would love to be able to setup a few liquid cooled rigs.One using this unitone using two whatminers m30one using two whatminers m50on using an s19 xpshow off all four setups with a nice long review.but without delivery of my liquid cooler it is in limbo.

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    ""hardware_name"": ""A721"",
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  },
  {
    ""hardware_name"": ""A741"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A841"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A941"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""A10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A12"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A1366I Immersion Cooling Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""liquid cooler from octominer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatminers m30"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatminers m50"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19 xp"",
    ""hardware_is_owned"": false
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]"
23069,"Date: 2019-09
Topic: NewPac 2Pac Rockminer U10 compatabilty
### Original post:
Hello AllIm fairly new to this, read what I can search but I cant seem to find a solution. Any help is appreciated or a link to the correct part of this forum. Hes my situation:I have x8 Rockminer U10s beavering away with x1 2Pac using cgminer 4.10 clocked at 225Mhz and returning 213.6GH/s on ckpool. The hub is a 10 port Sipolar with a hardwired 5v 30A PSU. Im drawing 18.25A so the stock 10A PSU wasnt enough.Im working on a second setup with x10 NewPacs using cgminer 4.11 but mixing NewPacs and Rockiminers doesnt work on either cgminer version. Im happy to slpit the hubs and have each cgminer running separately but is there a way to combine the hashrate or is this automatic via my address on ckpool? i.e. x8 Rockminers and x1 2Pac on cgminer 4.10 and x10 NewPacs on cgminer 4.11 churning away on one laptop with each data cable plugged into the laptop.Can this be ran from a Raspberry Pi with two cgminer instances runnnig this setup?Any help is appreciated.

### Reply 1:
You should be able to run two setups on two different instances of cgminer each with its own worker name. So one would be your <truncated> and the other would be ""same username.8xU10s"" or whatever combination you choose. They would show up as two different workers but you should get a whole hashrate on the pool. For example I have ten workers names on bitminter (although only using one) but it will show my whole hashrate on the main stats page but in my account I can see each individual worker shares.Have you checked the Newpac/Terminus R606 thread for answers. Rockminer actually copied sidehacks Newpacs and didnt give him a penny for them. Thieving scum!Anyway, in the thread there is a version of cgminer built by vh with autotune functionality. So you can set a freq in the .bat file and cgminer will automatically tune it to its highest most stable hashrate.

### Reply 2:
Hi GTThere's been an update to which I'm now trying to run a x1 R606, x1 Newpac, x1 2Pac and x12 U10s. I use 4.11.1 for the R606 and Newpac and just those two run super smooth at 550MHz/Vcore setting 1 (410mV) and 250MHz Vcore max respectively. I return 756GHs with room for improvement. However, my main issue is that when I add the 2Pac to the same or different hub as the x1 Newpac, I mainly see 'usb write' messages against the 2Pac and the overall average hash rate drops. I thought you could run multiple freq settings of miners together and after reading most of these forums, I see multiple 'freq' commands for each.I've also tried running the 2Pac on 4.10.0 (same and different hub) but then I get the 'you don't have the privilege' type message and I'm back to using only 4.11.1. The U10s don't show on cgminer 4.10.0 but use Rockminer 4.10.0 instead. The 2Pac is recognised on Rockminer 4.10.0 but the same 'privilege' message appears on 4.11.1 when I start the 4.10.0. Up to that point, 4.11.1 works fine. I use a laptop with Windows 7 and have a DPS1200-1, breakout board with PCIe cables to the R606, x2 GS hubs. I use Lindy USB cables, Arctic Breeze USB fans and Eluteng/AC Infinity fa<rest of post truncated>

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    ""hardware_name"": ""2Pac"",
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    ""hardware_name"": ""PCIe cables"",
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  {
    ""hardware_name"": ""GS hubs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Lindy USB cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Arctic Breeze USB fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Eluteng/AC Infinity fans"",
    ""hardware_is_owned"": true
  }
]"
23149,"Date: 2019-12
Topic: is it possible to run S17 or S17 Pro  in fixed-freq mode ?
### Original post:
sorry for noob questioni have some Antminer s17 / s17 pro minerswith unlocked ssh , so i can ssh into themis there anyway i can use them in fixed-freq mode ? (for over/under clock and ...)for example :is it possible to build s9 bmminer source code , for S17 ?or should i think about reverse-engineering the bmminer or cgminer binary ?or should i forget about it ?in the kernel.log it <truncated> This is scan-user versionso it's auto/scan freq firmwarei tried to change cgminer.conf and tried these but still the miner is running in auto freq <truncated> : true,""fixed-freq"" : <truncated> : ""true"",""fixed-freq"" : <truncated> : <truncated> : ""1850""

### Reply 1:
This is probably the best thing to do, you are playing with a gear which you probably paid 2k-3k to get, besides you don't seem to fully know what you are doing, so the risk vs reward here does not seem so convincing, there is no data or information related to these new gears, probably nobody has messed with them yet and so shouldn't you.

### Reply 2:
Check this post below and maybe it might help you to remove the auto freq.- <link> to the post above you need to edit the <truncated> this is not for s17 miner but check that part and maybe you can find the solution by editing something under asic-freq.Don't forget to have a backup for safety purposes.

### Reply 3:
That bugs me too. 2 boards run at a frequency of 422 and 1 with 522. The latter is clearly 18 degrees hotter and the fans are accordingly much louder.

### Reply 4:
Sometimes the miner freq drop or decrease if the hashboards are too hot the miner will automatically switch to the lower frequency.Do you have any kernel logs to share? Post it here let's see if we can find the issue there and take a screenshot of miner status.Try to test the miner with lower power mode you can find it under miner's configuration and monitor the miner's frequency if it will become stable. Also, try to clean the miner and test it again.

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22878,"Date: 2019-02
Topic: antminer s9 fan direction is wrong?
### Original post:
Hi all almost same topic i saw but it is locked that topic is about whic fan must run faster here it is <link> is I guess QC fckd up because both fans sucking air from miner doest matter if switch fron to back because fan direction again both suck from miners.As may 2018 bitmain ask for the entire miner to be sent i hope warrant seal removed not an excuse to not fix under warranty,2 hashboard wasnt hashing at all and this miner not even used.fan arrows are both towards suck air from miner ?? is this factory installed a wrong fan or what?should sent to bitmain i already opened too see which hashboard i should remove but here we go notice this.Fans directions are wrong both is front fan insatalled <link> fan <link> side of fan <link> of fan <link> miner if you pay attention switching fan front to back doesn't change it is will suck from miner again <link> looks like at factory both front fans are installed by mistake.i tried with normal fans nope 2 hashboards dead should I sent to shitmain or just wasting time trying to fix boards ??

### Reply 1:
Do you mean that there is no intake air and both front and back is exhaust fan?Did you tried to reverse the fan without reversing cable?I suggest you better to send it back to bitmain so that they can replace it with new hardware just make sure that it's still underwarranty.

### Reply 2:
Definitely send it back to them. Use the warranty because it's available. It will likely cost you more than the shipping tonget and repair it.It sucks sending the whole thing back but as i found out you have to play by their rules. The mist theyll let yoy do is open it up and troubleshoot it for them.

### Reply 3:
The long bolts on the fan housing are not warranty protected just flip one using those bolts.

### Reply 4:
what did you mean here? i have a lot s9 only 2 of them made trouble and im sure not took wrong fan because 2 miner was at 2 different location.Yes i paid attention warranty seals are gone how to take from good one ??man this guy has eagle eye lol thanks by the way I was about to sent idiots put front fans to both sides I guess. SHITMAIN

### Reply 5:
Just FYI...sending an S9 back to H.K. from Quebec by DHL now costs $CDN 400.00...That is about 35% cost of a Brand new unit with PSU...(And it comes with ANOTHER DEAD HASH BOARD which will need to be sent back)I've got two dead boards on units with two weeks left on warrantyA brand new 14Th with a dead boardA brand new 14Th that only does 13Th...tough choice to get them fixed or just buy new ones and keep the defects for spare boards when then new ones die.4 out of 28 S9's had issues of the last six monthsNeedless to say I have given up on Bitmain's SHA256 Asics and now buy Nano 8's. and some <truncated>

### Reply 6:
Yeah been spending a sick amount of time with these buggers( actually been a little incommunicado on the forum because of it). Maybe it's just me but there chip quality is wildly inconsistent. One thing I haven't been able to figure out yet is how in the web interface it shows the each hashboard as several different chains but electronically I can't find any difference, it just seems to be one long chain. Perhaps it is a folly to assume that each chain is independent, has anyone seen a working chain between two bad ones? Maybe the chains just fail from end to beginning? ( I'm not a miner, the only boards I receive are total failures lol)

### Reply 7:
As I understand it, the S9 considers each of the three hashboards as a different ""chain"", chain[5] is on the right, chain[6] in the middle and chain[7] on the left, corresponding to the J6 J7 J8 connectors. These chains are treated independently. However, it seems all of the chips on a single board are chained together in series, with 63 per board. The miner status page simply splits the number of chips it detects on a board into groups of eight for visual reasons, but they are still all in one long series. (I think)

### Reply 8:
Ahm... both fans blow in the same direction (they have to...) so switching the front and back fans would NOT result in one of the fans blowing the wrong way. All fans blow towards the side which has the label. E.g. if you are looking at the front of the miner, you will see the label on the fan and it will blow towards you. The back fan is ALMOST the same type (there is a slight difference) but it also blows towards the direction of the label, that's why you don't see a label on the back fan (it is on the inside, facing towards the guts of the miner).If a fan blows in the wrong direction, remove it, turn it around, screw it back on, and it will blow in the right direction.For those interested in the details, the latest S9s have slightly different fans front and back. I have no idea WHAT the difference is, but the front fan is NIDEC UltraFlo W12E12BS11B5-57 and the back one is NIDEC UltraFlo W12E12BS11B5-07 (note the last two digits). Both are rated 1.65 Amps<rest of thread truncated>
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16042,"Date: 2019-11
Topic: EU Mining Farm under costruction
### Original post:
After couple of years of ""self mining"" I decided with an investor to open a mining facility in Bulgaria, 2 months ago we found the ideal location:- 4.5Mwh available- New building in a safe area- A hydroelectric power plant nearby (we are negotiating a direct supply, even if in BG the electricity is the cheapes in EU)As you can imagine we started this new adventure and I d like to share with you the future progress.Right now we are securing the building (cameras, 24H armed gards, automatic double front doors, steel bars behing fans and air filters)Tomorrow are going to be installed the fans and the air filters (at max capacity we ll filter more than 200.000mq3 of air per hours )In January an Italian firm will start the electrical system with high quality and fire resistant cables (most of the mining farms I saw had the cheapest cables ever, but in our opinion there is no logic to connect milions of of miners to few thousands of cables)We expect to start operation in late February. In the meanwhile I ll share pics, videos and adopted technical solutions and of course I d love to hear your feedbacks!Stay Tuned Luca

### Reply 1:
Right, even if costs in our ""business"" is not all (security, air filters, company <truncated> we plan a go to the market from 0,12/Kwh for ""little"" miners to 0,09/Kwh for ""professional miners"". <truncated> else included.What do you think?

### Reply 2:
I calculate that if you charge over 0.06$/Kwh or 0.052/Kwh no-one will mine with you as it will not be profitable, and if you are paying more than that to start with or plan on paying more than that for your own miners you will not make any money.

### Reply 3:
My friend's 0.25MW farm is about 0.09E/kWh and 95% customers decided to switch off and leave. My other friend's own farm with 0.07E/kWh is already switched off.I wish you good luck, you will really need it, but I belive that 2019 will be S9 and similar profitable again with your energy prices and 2020 you will be overfilled thanks to another bull run.

### Reply 4:
If the data center, all of the equipment, mining rigs, operations, and staff were free; a s9 needs power to be 0.083c USD (0.073EUR)/kWh or lower to break even or be profitable.Very much support more people entering mining, but you need to re-evaluate your business plan ASAP.If you have any questions, please contact me and I would be happy to provide more details.

### Reply 5:
there is probably not a single miner that is profitable with these power rates, you might argue that this is only a temporary situation due to the bear market, bet rest assure the mining game has changed FOREVER, china has an average rate of 3-5 cents, the US has a rate of 5-7 cents , many other countries like Goergia and some Arab countries have cheaper rates than china, the mining industry will always be ""fully-occupied"" by those players, if crypto prices go on a rally that allows such high rates like yours to be profitable, it will be only a matter of ""short-period"" before those players load up on their hash power to beat you out of business again. the best mining investement would be to find a cheap power source somewhere in a trusted place and host your machines there, also giving the labor cost + wiring + maintenance cost in EU zone makes it even harder for you to mine there.not trying to let you down, just preparing you for a big fail, and hopping you will re-think your investment, because really, this mining business has became something like oil,medicine or weapon business, where only the strong can do it with profit.

### Reply 6:
Here I am, all of you guys are partially right, but we have to consider some facts:1) Bulgaria has the cheapest rates in Europe (to be 100% honest there are some lost places in Sweden or Norway that have cheaper power rates, but the nearest one is 350Km from an airport (I ve been there) and let me say that doesn t worth the saving).2) Bulgaria is part of EU, so for all the miners in our territory there are no custom fees nor VAT. We ve been in Georgia and Siberia too before choose Bulgaria, and talking about Georgia (if a inhabitant is reading I seriously loved your hidden country) the power cost is 0,07 or 0,06 if you deal for more than 1Mwh (cost for us, then you have to add the hosting services, the import expenses/VAT/Taxes) so again it doesn t make sense. Siberia is totally an other speech, dealing with the local power company we could pay it 0,035Kwh, but guys lets be realistic: who of you is going to ship or bring your miners to Siberia, where if the local mafia wakes up a day and decides that the mining farm is going to be a new piece of their own business you cannot say or do absolutely nothing? Furthermore we talked with some guys who own a mining facility either near Mos<rest of post truncated>

### Reply 7:
Look first off, I wish you all the best in your endeavour, don't get me wrong I hope it works out for you. But you can't <rest of thread truncated>
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23158,"Date: 2019-12
Topic: Some Error in Kernel Log Regarding PIC
### Original post:
The error part of the log is like that <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=a0(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=a0(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=a0(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=a0(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=80(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=80(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=80(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=80(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=e8(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=e8(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=e8(3) on <truncated> Error of set PIC FLASH addr: addr_H=f(3) addr_L=e8(3) on <truncated> chain[7]: [3:3] [3:3] [3:3] [3:3] [3:3] [3:3] [3:3] [3:3]main.c:9148: chain[7] has no freq in PIC! Will use default freq=500 and jump over...main.c:2282: Check chain[7] PIC fw version=0x03But I dont know if that is also a problem that requires PIC flash with Pickit tool? I remember once I was getting a PIC error in a de<rest of post truncated>

### Reply 1:
We have old threads here which already solve this issue you don't need to use a PICKit 3 to fix this issue. Let me gives you the guide here including the link where I found the solution.According to them, they solve this issue by upgrading the firmware to the latest firmware but make sure that you remove the hashboard first on the board before you upgrade it through the web browser. Here's the source from here <link> also found this one below and they said you need to downgrade the firmware version to old version.- <link> in case if you already upgrade it to 2019 firmware where you can't downgrade the firmware through the web you need to flash the miner via SD card before you flash it to old firmware I think November 2017 firmware according to the forum post above.

### Reply 2:
Somehow problem is solved by just cleaning the board, no idea why dusty board give that error.

### Reply 3:
It's likely that not the cleaning itself that fixed it, it's the shaking/moving of the hashboard , I have experienced something similar with boards showing 0 asics and some showing PIC error, it turns out that the coil on the board is a bit loose or just needs hitting like how my grandfather used to hit the old television when it didn't work.image source : Amazon.com , added the arrow and the red square to show you where the coil is.

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  {
    ""hardware_name"": ""board"",
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23153,"Date: 2019-12
Topic: S11 downgrade
### Original post:
Hello friends How can I downgrade my S11. It can't get IP

### Reply 1:
Thank you but this control board doesn't have any jumper

### Reply 2:
You can flash the s11 miner with SD card program recovery from bitmain.You need to download the SD card firmware under this page below:- <link> make sure to download the exact model ID of your s11 you can find it under the control board.After that follow the guide from this link ""Guide on how to make a program recovery""

### Reply 3:
Did you read the guide that I link above?You don't need to move the jumper just insert the SD card after you copy all files and then turn on the miner just like the video guide included on the guide above.It's not the same as antminer s9 that you need to move the jumper to flash the nand IC.

### Reply 4:
I did do them one by oneBut nothing happened.Do I need to reprogram NAND ?If yes who has NAND program of this IC? 29F2G08ABAEA

### Reply 5:
There are two program from bitmain ""S11-7007 .rar"" and ""S11-7010 .rar"" so make sure that you download the correct firmware. You need to check your antminer s11 miner control board if it is ""7010 control board"" or ""7007 control board"" If you know the correct control board ID the flashing will work through SD card.Try to flash it again with the another SD card firmware(Either ""S11-7007 .rar"" or ""S11-7010 .rar"") to test which one is correct for your s11 miner and make sure the SD card is clean and well-formatted.If still not work try to hard reset the miner follow this guide below.- Hold the IP reporter button for 15 to 20 seconds then release(increase the timeframe holding the button if not work around 20 to 30 seconds) .- After that release and let the miner reboot- Then try to scan the IP again with APMinerTool V1.0.10If none of them works your final move is to contact Bitmain if it still under warranty.

### Reply 6:
Sorry !!!Who has NAND file of this device model ??

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11343,"Date: 2023-08
Topic: GekkoScience Compac F |  found 0 chip(s)
### Original post:
I have 2 GekkoScience Compac F both with found 0 chip(s)I'm currently testing on windows 11 on cgminerI've updated the drivers using Zadig.Windows recognizes the usb sticksThe lights are on on the sticks but still says found 0 chip(s)I don't have anything special in my .bat file:--suggest-diff 442 <truncated> 100any ideas or suggestions?are these sticks just dead now?thanks

### Reply 1:
Here's the support thread for the Compac F's:<link>

### Reply 2:
Since Windows 11 is pretty new I never heard of someone yet running Compac F successfully with this OS but would you mind to try all possible solutions from Kano?Check the troubleshooting guide here <link> still does not work then try to switch to Linux OS.

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    ""hardware_name"": ""Windows 11"",
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    ""hardware_name"": ""cgminer"",
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23209,"Date: 2020-02
Topic: Asic Anminer s9k
### Original post:
I tried a few things with my 2nd hand S1.Simplest fix, which will get you 2/3 boards mining, is to - switch it all off- disconnect 12V lines from the faulty board- check that there are no loose live ends in a bad place- power it up- mine with the remaining 'good' ASIC boardsAntminer products appear to be safe to run with less than all boards powered. Think of all that electricity which you are saving by mining at 2/3 speed.You might also want to look at the ""overclocking"" method to decrease (rather than increase) clock rates. There can be times when decreasing the clock rate by about 10% does restore operation of the bad board.

### Reply 1:
We almost all do, this model is the worst out there, I have yet to find someone who has a few S9ks that mine without a problem, anyway for your case its plain and simple, your hash board number [1] ""middle chain"" has lost some chips and the miner refuses to mine as long as the hash board shows anything less than 60 Asics on each control board, by unplugging that faulty miner, the miner should mine just fine with the two remaining boards, alternatively and before you discount that lagging board, you should try the latest firmware version.Some times, the power supply cables or the ribbon cables that go from the control board to the hash board can cause the same issue, it's not very common but still worth to test, you have to swap the ribbon cable and the 6 pin cables from another board and see if you get any luck, if not then, well sadly you have lost a hash board which is common in all Bitmain mining gears and most common in this specific model.

### Reply 2:
Hello people!I have a problem with my s9k( sorry for bad english)After start working second hash board have eror and dont work( added on photos)and have a kernel log wheare i see changes with voltage.I dont know wthat is problem heare( becouse i m begginer on ASIC's)Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (o<rest of post truncated>

### Reply 3:
Recently there is a post here on the forum that has the issue on the middle board the same as yours but different kernel logs. The weird thing is they also have the issue on the middle hashboard. Can you try to attach the ribbon and power cable from chain to chain [1] and then attach the cable from chain 1 to 0? Let's see if there are changes in the kernel logs. If the issue on chain 1 is gone and the chain 0 shows some issue your hashboard is dead but if the error still in chain 1 there might be an issue from the firmware which is a common issue on this unit model.

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    ""hardware_name"": ""power supply cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ribbon cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""6 pin cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""second hash board"",
    ""hardware_is_owned"": true
  }
]"
22995,"Date: 2019-06
Topic: s9j works fine but one of fans shows 30,600 RPM...help please
### Original post:
hi everyonei would be so thankful if anybody help.one of my s9j fans shows 30,600 or 18,000 and ... RPM.and temp is good and it works fine.should i change fan with new one?by the way s9j has 2 fans fan no5 and 6.this is fan no5 with problem.please can anybody help?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: <rest of post truncated>

### Reply 1:
The fan sensor isn't working but the fan may still be spinning on its own power. It's definitely not spinning at 18k or 30k RPM because if it was, it would destroy itself. If the temps are okay, you are getting good airflow, and the miner isn't shutting off due to high temps or a no fan signal you will be fine.

### Reply 2:
This happened to two of my gears but only after i replaced a fan on each, unfortunately for me the miner did not work and it was stuck at ""checking fans"" phase, it was also showing 30k RPM.For one miner I replaced the other fan with the another new fan ( the same type that shows 30k) and both started to show 6k RPM and worked fine, for the other gear I had to use another fan, but as the comment above mentioned, if temps are good and miner isn't drifting ( mine was drifting for real) then i wouldn't worry about it.

### Reply 3:
thanks alot hockeybum.

","[
  {
    ""hardware_name"": ""s9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan no5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan no6"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gears"",
    ""hardware_is_owned"": true
  }
]"
24065,"Date: 2023-01
Topic: So I got my Avalon A1066 back online. Have a question about settings.
### Original post:
CGMiner ConfigurationMore Options <truncated> where do I find what options can be put here?

### Reply 1:
In the source code they never released ... ... ... ... ...

","[
  {
    ""hardware_name"": ""Avalon A1066"",
    ""hardware_is_owned"": true
  }
]"
11325,"Date: 2023-06
Topic: Optimize Your Mining Performance with the Efficient Whatsminer P20 Power Supply
### Original post:
The Whatsminer P20 Power Supply is a high-quality power supply unit designed for use with the Whatsminer Bitcoin miner, specifically the P20 model. One of its main advantages is its efficient and stable power delivery, ensuring optimal performance from your mining rig.With a maximum output of 2100 watts, the P20 Power Supply provides ample power to support your mining operation. It also features an intelligent control system that regulates voltage, current, and temperature, optimizing the miner's performance under various load <truncated> the P20 Power Supply is equipped with built-in overheat protection and power-on self-test functions, ensuring safe and reliable operation at all times. This ensures that your mining rig will be running smoothly and efficiently, without any unexpected interruptions or malfunctions.To Know More:<link>

","[
  {
    ""hardware_name"": ""Whatsminer P20 Power Supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer Bitcoin miner"",
    ""hardware_is_owned"": false
  }
]"
4006,"Date: 2019-07
Topic: Group Buy in Romania
### Original post:
So this might not be the best time to do a group buy, but I am posting this here so it can get noticed and I can speak to someone soon someday to buy a mining hardware as a group. If you want to discuss the prospects, then get in touch through inbox.Multumesc!~

### Reply 1:
bumpI am in Cahul for this week. Any Moldovans wanting to meet any discuss any oppurtunities may reach out to me through pm.editI will be leaving Cahul by the weekend. Sad to get no response here.

",[]
10889,"Date: 2020-06
Topic: Bitmain introduces Antminer T19 84Th
### Original post:
Once again, no Low Power Modes for the T models.I guess they are trying to differentiate the features between higher and lower cost models

### Reply 1:
Maybe LPM it's unreliable with the lower quality of T series chips, so they don't risk enabling it... But sure, it's something to take into account in some cases.

### Reply 2:
This gear is overpriced, and for those who either have not tried the 17 series or simply had good luck with them, you should know that bitmain gears right after the 15 series became of terrible quality, large farms are reporting 30% failure rate on the 17 series, one member explained in great details what was wrong with those gears, there is no guarantee that the 19 series will be any different, I think we all know by now that bitmain doesn't give a shit about any one of us, if your gear breaks in a few weeks, they will ask you to ship it at your own cost and it will take a long time until they fix it, that will increase the cost of the miner and waste a ton of your time.If you insist on buying these gears, you should at least wait for a month or two until you see how they did with other people, but if you want your $2000 to be a laboratory rat for bitmain, be my guest, and quote me when your gear fails or loses a board a month after you have received it.

### Reply 3:
So they just released the T model for the 19 series, with 84Th (3%) and 3150W (5%) --> 37.5 J/TH (5%)It's more efficient than the S17+/Pro, and close to the limit of 3250W for ""home usage"".Delivery end of june, but it's already sold out. It's available through resellers though.Bitmain official price is 13,976 or ~ 1,960usd + shipping and taxesLink to product<link> It's now available at the English site too, for $1,749 usd and delivery end of June.

### Reply 4:
Nope it is merely marketing ploy.If the set speed is freq 700 and volts 19having a freq 550 and volts 17.5 would be stable.I have not found a single bitmain product that runs poorly on a proper down clock + voltage drop.this includesusb <truncated> of the above are good with lowered hash and power.many if not all of the ant miner gear are more stable with reduced output.mind you my sample was for about 500-750 pieces of gear in total.

### Reply 5:
YEAH they make them pretty crappy. I have done amazing well with the s17 and t17 variants.As of today 100% are working but my sample size is small.17 s17pro1 s172 t172 t17e2 t17+1 s17+every one is working.I struggled with the one t17+and the two t17e are very power hungry.But I am happy with mt 17 series purchases.Now as for this t19 84 th x 37.5 = 3150 wattsNo need to run them like that.set it to 80th reduce freq just a touch and let gear do 35 watts a th.you burn only 2800 wattsgear will work better be quieter and all in all a better deal for customer.But we are back to the common situation for mining btc. bitmain has the most efficient gear again. they still maintain a strangle hold on the industry.and much like Minneapolis police did the other day they are slowly squeezing the life out of BTC . They just don't care or value BTC it is just something to abuse in order for them to be more powerful.My money power set up is a 50-50 coin split.so this is t19 is like a 42th free power machine.I have a coupon so 1743-243 = 1500 + 150 to ship = 1650 trump tax could be 400so at 2050 42th earns 3.78 USD a day or 542 daysat 1650 earning 3.78 = 436 daysplus wait 21 days or so for it to show<rest of post truncated>

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    ""hardware_name"": ""Antminer T19 84Th"",
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  {
    ""hardware_name"": ""17 series"",
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  },
  {
    ""hardware_name"": ""15 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17+/Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17e"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""t17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""s17+"",
    ""hardware_is_owned"": true
  }
]"
10825,"Date: 2019-06
Topic: Pangolin Whatsminer M10 - 33TH at 2145W
### Original post:
So Pangolin has 2 new miners for presale on their website.The BTC miner is a 33TH unit running at 2145W - for $1999How are they getting these results using 16nm ?(not sure why they put ""or better"" in there - dont they know what processors they are using ?)Thoughts ?

### Reply 1:
so they do 2145/33000 = 0.065 per gh?and are really by far the best most efficient miner ever made?So if you purchased the GMO miner at .082 per gh you got crushed by this miner.The M10 is like a freaking beastbtw bitmain has dropped the s9i down under 600 to 564<link> rules if this is true.

### Reply 2:
Easy, just check out the overclocking threads for the s9: given the right voltage, freq tweaks and decent cooling they can run in the same per-chip hash rates. As for the 'or better' I suspect they are either using multiple foundries for their chips or as the 16nm node further matures are anticipating at least 1 more process improvement for the node.

### Reply 3:
My thoughts exactly. Right now, the M10s have the best specs out there. And the price is pretty good.

### Reply 4:
I'd be leery on a presale. Just look at the M3 that went from almost $2k to under $300 from price wars and market fluctuation. Was a nice pump and dump. Glad I sold all mine shortly after receiving. They used more power than advertised too. Bitmain or Canaan has to be releasing something more efficient to start new price war for GMO and this. Someone will most likely be shipping something better/cheaper before these and GMO even start shipping.

### Reply 5:
Look at the amount of wattage it uses. Yikes.

### Reply 6:
The s9i is 544 with a 100 dollar coupon. 4 days outThe m10 is 2200 with shipping 70 days outTough call to spend 2200 on a preorder

### Reply 7:
Yea, destroys the the b3. 33th is nice but over 3300w. This is more in line what we're talking about efficiency wise in one of the other speculation threads.

### Reply 8:
this m10 is the most efficient miner ever built. (claimed not proven yet)I am truly looking forward to giving it a good testing and demo.If it is under 0.070 a gh and does at least 30th it would still be the best miner ever built.I also hope that they create a lower speed optional firmware.They made firmware for the M3x to save power see below<link> option like this for the new miner would be good for some of us.The ability to lower power to 1800 watts on low speed and say 27.3thvs 2145 watts on high speed and say 33th would really make this gear a winner

### Reply 9:
I'll be interested to see what the real power draw is. My old M3s were pulling 2400W each vs the advertised 2000W.

### Reply 10:
Specs do say +-10% on power draw...

### Reply 11:
<link>

### Reply 12:
Yes they do, but +10% on 2000W is 2200W, not 2400W... That's 400W over between the two.

### Reply 13:
even at 2400watt on the wall2400/33000 = 0.072727272 watts per gh which is better then anything elsetime will tell I will do detail videos on it in the garage and in the solar array I will meter it in both placesI will also attempt to test other psu's if at all possible.I have a 2400 watt psuI have a 2500 watt psuI have a 2880 watt psuI have a 2980 watt psualong with the stock attached psu.I am waiting for a contact email as Hagss setup it up and I should hear from them soon.

### Reply 14:
My point got a little lost, I simply meant I am dubious of their power ratings. Yes even at 2400W this current model would be nice, hopefully it stays in this range.I hope I am wrong as my M3s were excellent miners and this one looks awesome.

### Reply 15:
Well my M3 did just about exactly as advertised. They sent me and Hagss testers to demo..So frankly we hope this will be the same.We will let you know when we get them.

### Reply 16:
We've never had a request for a whatsminer. Personally I don't know much about them. Pangolin is the place though? Reputable? We'll want to list the M10 probably wait another month on the altcoin asic. Nov is so far off in this world.We're just very confused as Pangolin hasn't responded to us at all.

### Reply 17:
They are not ready as of now. So they may not have wanted to list with you at this time.

### Reply 18:
Pangolin is the manufacturer or a reseller?

### Reply 19:
Try shooting HagssFin a pm he would know more then me.Last dec he set the Demos up. I did the YouTube videos and he did the write up on the M3.We each got a demo machine. We paid for them they were sent early at a very small discount to us. But that was when Btc was to the moon 19900 usd if I recall

### Reply 20:
Pangolinminer is the overseas sales team for WhatsMiner company.

### Reply 21:
I figured once they started working with 16nm, Pangolinminer would come up with something decent. I never hadany issues with my M3's, and Pangolinminer was easy to deal with. Still a breath of fresh air, to have another company in this market. @HagssFIN and philipma Looking forward to seeing you guys in action a<rest of thread truncated>
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    ""hardware_name"": ""M10"",
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    ""hardware_name"": ""s9i"",
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    ""hardware_name"": ""M3"",
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    ""hardware_name"": ""b3"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""2400 watt psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2500 watt psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2880 watt psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2980 watt psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""stock attached psu"",
    ""hardware_is_owned"": false
  }
]"
24185,"Date: 2023-10
Topic: S19jPro abnormal network - (Will not connect to Pool)
### Original post:
Driving me nuts... after changing pool address to IP and restarting I get Normal Network for 15 seconds on Miner Dashboard. Latest CurrentLog below...any help greatly appreciated. New miner, 12/26/22 firmware (posted 12/29/22)[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Initializing cgroup subsys cpu[ 0.000000] Linux version 3.8.13+ <truncated> (gcc version 4.9.4 (Linaro GCC 4.9-2017.01) ) #36 SMP Mon Dec 26 17:10:49 CST 2022[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=50c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone[ 0.000000] Memory policy: ECC disabled, Data cache writeback[ 0.000000] On node 0 totalpages: 65280[ 0.000000] <truncated> node 0, pgdat c05d9000, node_mem_map c0631000[ 0.000000] Normal zone: 512 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 64768 pages, LIFO batch:15[ 0.000000] AM335X ES1.0 (neon )[ 0.000000] PERCPU: Embedded 8 pages/cpu @c083e000 s9856 r8192 d14720 u32768[ 0.000000] pcpu-alloc: s9856 r8192 d14720 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: 0 [ 0.0<rest of post truncated>

### Reply 1:
first put logs in codeNext put in a different poolpool = <truncated> = <truncated> = 123enter the one above for all 3 pools.see if it worksif it works you have a bad pool for the pool you are using.do not mine for any long time with the pool I gave you as it is my test pool you would be mining for me.if you mine for 1 day with the address above I would earn about 7 bucks.you only need test for 1 hour to be sure it works I would earn 7/24 = 29 cents

### Reply 2:
Have you replaced a new hashboard?According to your logs, it shows a mixed hashboard, and looks like the problem is related to the serial number according to this logs <truncated> 00:00:10 Open miner sn file /config/sn errorDid you replace the hashboard with a new one? or did you buy this unit as used?I hope that next time use the # button to properly put all logs on insert code tag.

### Reply 3:
OK thank you both, think I see how to use #. Have tried several pools already. The machine was supposedly new, came from China via HC, bought on NewEgg... Having difficulty navigating this on my cell. Will come back on laptop. Thank you again

### Reply 4:
Who is the seller on Newegg did you buy this unit?If it's from other sellers there is a possibility they sent you a defective unit with a different hashboard.About the # button, you can find it when editing your post like what we did from our posts above try to edit your thread and put them all under the code tag, or use pastebin.com and paste the URL here.I think you can burn Braiins OS to try if all hashboard are working fine it can bypass mixed hashboard.

### Reply 5:
What IP? do you mean putting the pool's IP address instead of the stratum URL? please post some pictures of the pool details you entered and the status page/dashboard.as for this line in the kernel logCode:2000-01-01 00:00:10 Open miner sn file /config/sn errorYou can just ignore it for now, I don't see anything critically wrong in the kernel log you posted, and I also think it's incomplete for some reason.**To post pictures, simply upload them to this website <link> and paste the links.

### Reply 6:
Thank you All! Newbie error, had a security feature in my router blocking the connection. All good now. So I hear ANTPOOL is bad and I should mine on another pool...

### Reply 7:
Antpool is not bad since they are pool related to Bitcoin mining most of the Antivirus/malware block this even ISP/routers. Changing DNS or dropping down the router firewall or switching to another pool should fix any network-related issue. It's weird it looks like it works even with mixed hashboard.

### Reply 8:
Hello . I'm newbie too. i am having the same problem right now. Can you explain in detail how you solved the problem? thanks for your help.

### Reply 9:
Based on what he said the issue comes from the router that prevents the miner to connect to mining pool.You can also try to switch your miner to static IP and then add DNS to bypass those firewall on the router or setup your router to disable firewall.

### Reply 10:
You are not having the same issue, you are having a similar issue, and thus the solution is probably different, it's very uncommon to have a router that would block mining pools for no apparent reason, so OP's case was very special and you shouldn't follow his path without having done your own troubleshooting, so go ahead and start your own topic, make sure you provide the following:-Image of the status page.-Image of pool settings.-Kernel log.

### Reply 11:
Hello Guys, i m having same issue, 5 new unboxed miners S19j PRO won't connect to mining pool through my 4g Box router,log stops in "" 2023-02-23 22:02:15 <truncated> start... ""<rest of thread truncated>
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    ""hardware_name"": ""router"",
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    ""hardware_name"": ""4g Box router"",
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23121,"Date: 2019-10
Topic: 200+ antminers what's the most efficiente server setup?
### Original post:
Hello!i just acquired more antminers, the electrical and cooling system is ok, but I'm worried about the network. This miner has machines from other owners and a few are using different pools, what I assume won't make much of a difference to the LAN itself.my question is:Using the IP report on the antminer software will fix the IP to the MAC address of each machine, so I won't have trouble with IP conflict? If so, or not, what would be the most efficient way to run this opperation smoothly?

### Reply 1:
If you have miners with the same MAC address you need to manually set their IP from DHCP into Static so that it won't affect each other.IP reporter software is only used to find the IPs of the miner if you don't know how to use it much better read this guide below. - Where and how to use IP Reporter

### Reply 2:
Don't confuse yourself, MAC address should be the least of your concern as it's very unlikely you going to have two miners with the same MAC address, and to answer your question in short, NO.As far as I understand the ip report button only sends a request to the router asking for an IP address from the DHCP table, it does not really reset your network setting, which means if the used miner comes with the following ip <truncated> happens that one of your miners has the same exact IP , the newer miner won't show up on the network.you should reset all the newly bought miners to factory settings, then assign static IP address and pool information using a script such as > <link> if your gears are bitmain then use their tools which can be found here > <link> you can watch this video to understand how it works > <link> word of advice, try this on 1-2 miners first, don't go all in , if you make one mistake in setting up the network settings you will need to manually reset everything.

### Reply 3:
Okay lets pretend you are 192.168.1.1 routerlets pretend you have 1-254 addresses.use good 6x 48 port switchescisco has good ones. used for a good price.use a 8 port router to the switchesso 254 1 port is the routers 253 6 ports are the switches1-10 for other gear.A 1 address lost to router 47 empty ports start with 11 go to 50B 1 address lost to router 47 empty ports start with 51 go to 90C 1 address lost to router 47 empty ports start with 91 go to 130D 1 address lost to router 47 empty ports start with 131 go to 170E 1 address lost to router 47 empty ports start with 171 go to 210F 1 address lost to router 47 empty ports start with 211 go to 2504 left over 251-254First just hook upswitch A do static assign address192.168.1.11 name the worker 011192.168.1.12 name the worker 012end at192.168.1.50 name the worker 050once switch a is good do switch b.I use a black sharpie to number the gear in front and backyou end up with 6 switches and 240 units.Switch A 11-50 40 pieces of gear all in a rowSwitch BSwitch CSwitch DSwitch ESwitch Fvery easy to look for gear this way. But first setup is a lot of work.

### Reply 4:
First and foremost, you cannot have the same macaddress in more than one miner, if you do, you are going to get in trouble, so you have to correct that immediately. This could happen with inappropriate firmware cloning, such as older BraiinsOS installs using the same sdcard image and failing to edit the macaddress text file (usually no longer needed in current versions). Also don't use the same IP in more than one miner, that is also quite troublesome.That said, it is my suggestion that you don't use dhcp, set them all MANUALLY (in the miner). Also you should set up a dns caching server in your lan. I'd use Linux with dnscrypt-proxy, but there are many choices.200 miners fit a /24 configuration which is quite common, ie. 192.168.0.10 to 192.168.9.210 (place your dns caching server and router in 192.168.0.1) of course you can use the private IPs you like, such as 10.0.0.10 to 10.0.0.210, etc.You don't need anything fancy, cat 5e and 100mbps is more than sufficient. You can use ""dumb"" switches (hubs are a thing of the past), and cascade them: just leave an empty port to connect the next switch to it. You certainly don't need any overcomplicated setup, i assure you that. Alternative y<rest of post truncated>

### Reply 5:
What I asked was based on this video from bitmain, it seems to me it is a new functionality of their software.There's this batch configuring option. My doubt was if it would fix the ip to the router through mac address(which I did before in a smaller farm), setting it directly in the router's configurations; or if this setup would change the gear configurations and set it automatically to static in thar specific ip addres, or would go into DHCP and work only until the next reset.<link>

### Reply 6:
That is the same program I suggested for you , what it does is alter the network settings on the miners and not the router, those changes will be permanent until you change them, the only downside of<rest of thread truncated>
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    ""hardware_name"": ""dns caching server"",
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  {
    ""hardware_name"": ""Linux with dnscrypt-proxy"",
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  {
    ""hardware_name"": ""cat 5e"",
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]"
16572,"Date: 2023-08
Topic: USB Mining
### Original post:
Hello everyoneUsb Bitcoin Miner ! is that recommended for a newbie? im willing to start mining using 6 of those USB but im not sure how and where to startif anyone have tried this please give us some TIPS or advice please

### Reply 1:
USB mining was a dumb concept to start with, because you need a lot of power to mine at least decently. Maybe back then USB mining was slightly viable, but now your only option is to mine with ASICs.

### Reply 2:
Where have you heard or read about this USB bitcoin miner? For you to mine Bitcoin, you need an ASIC miner and that's not as little as an USB. I do believe that you've watched a video like this: --> <link> ""Solo Mining Bitcoin with AntMiner USB Stick on Raspberry Pi""At the end of that video it says that it's a lotto mining and mostly a gamble. And that USB is even going to be hotter that you barely touch it based on what the guy said on that video.

### Reply 3:
If you haven't bought any of those USB miners then I suggest you just use that money, buy Bitcoin and keep it in some secure hardware wallet. HODL till maybe bull run and sell. You will be way better off. But if you are willing to mining whilst expecting no rewards at all, then give it a go.Read through this threads, you might get some helpful info1. <link> <link>

### Reply 4:
Bitcoin mining historyLong time, years ago, you could mine bitcoins with CPUs and mining it with USB is something I never heard about but if it is possible, it would be around the times for CPU mining. Later, when Bitcoin mining comes to GPUs or FGPAs, ASICs, you can not return to mine bitcoin with CPUs or USBs. Because difficulty on the network is very high and even solo mining with an ASIC is impossible to find any block. Chance is nearly 0% with solo mining nowadays.

### Reply 5:
Right here, on this forum maybe?<link> not? If the USB miner is using bitmain S9 or s19 chips, what's stopping you from mining?You need to differentiate between a CPU or GPU which are standalone units and USB which is a standard for connectivity.

### Reply 6:
Mate, you can't even be profitable with a decent gaming computer with a high end graphics card mining Bitcoin, how do you think USB mining will end up?This idea is complete trash and I am not sure if it ever worked. It should stay archived and not shared with people as it is complete dumb in my honest opinion.Maybe try searching ASIC Miner and get those if you really want to do Bitcoin mining.

### Reply 7:
It's fun to buy one and use for practice, you know, setting up pools and see the whole thing in action, you should know that even if you see a USB miner today it's going to be very cheap, that's because they are not profitable anymore.I can still see loads of this miners on aliexpress website till date, good for practice and other things, it's a shame that no new PoW coins what to run on the sha256 algorithm anymore, if not, USB miners will still be a thing today, not for Bitcoin though but other new altcoins. Forget about these USB miners and try getting an asic miner that's specifically for mining Bitcoin and make sure you have affordable electricity in your city.

### Reply 8:
Although I hate the way to earn Bitcoin through faucet, but I must say claiming faucet is better than mine Bitcoin using USB.You're not earn anything mine Bitcoin using USB, while you're still need to pay electric cost and it will damage your hardware because it's need to be run all the time except you stop it. USB and ASICs miner is different, I think even you want to get an experience in mining, you need to buy ASICs miner, you can try the cheap one.

### Reply 9:
I think you mean mining devices such as Bitcoin USB-Stick Miner bitshopper GekkoScience Compac F 200 up to 350 GH/sThe price is approximately $335, and you get 350GH/s in ideal conditions.If we compare it to the Bitmain Antminer S19 Pro 110TH - SHA-256 - Bitcoin Miner, its price is about $2,499. In ideal conditions, you get the 110TH.110TH is 110,000 GH/s and by dividing both sides by 350 we get 314 while the price difference is about 7 times ($2,499/$335.)What I am trying to say here is that instead of buying 6 Bitcoin USB-Stick Miners, you can buy one Bitmain Antminer S19 Pro and you will get a return equal to buying about 300 Bitcoin USB-Stick Miners.All the above assumptions are in ideal conditions and for the purpose of comparison only, and no other things have been calculated and I don't know if there is any altcoin can be mined at a profit using 350GH/s.

### Reply 10:
As many others before, do you realize that the said USB miner is using ASIC chips, the same as on an S9?That tiny USB miner everyone laughs about is way better than the first ASIC Bitmain launched and can still compete in terms of raw hashrate with their second model , the S3, which does 440GH/s while the Compac F usb miner gets 300+.I don't understand why people are fixated that much on the USB thing.If you slap a modern ASIC chip on an<rest of thread truncated>
","[
  {
    ""hardware_name"": ""USB Bitcoin Miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AntMiner USB Stick"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Raspberry Pi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""secure hardware wallet"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""CPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""FGPA"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bitmain S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19 chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""gaming computer with a high end graphics card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC Miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitcoin USB-Stick Miner bitshopper GekkoScience Compac F"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain Antminer S19 Pro"",
    ""hardware_is_owned"": false
  }
]"
13838,"Date: 2023-06
Topic: Code js sofwater miner
### Original post:
Code: function mineBitcoin() { // Get the current block hash. const blockHash = <truncated> // Calculate the nonce. let nonce = 0; while <truncated> nonce)) { nonce++; } // Mine the block. const minedBlock = <truncated> nonce); // Return the mined block. return <truncated> <truncated> { // Get the latest block from the blockchain. const latestBlock = <truncated> // Return the block hash. return <truncated> <truncated> nonce) { // Calculate the hash of the block with the given nonce. const calculatedHash = <truncated> nonce); // Check if the hash is valid. return <truncated> <truncated> nonce) { // Create a new block with the given hash and nonce. const minedBlock = { hash: blockHash, nonce: nonce, }; // Add the block to the blockchain. <truncated> // Return the mined block. return minedBlock;}// Start mining <truncated>

### Reply 1:
Seriously?Hopefully no one ever runs software written by you.

",[]
10848,"Date: 2019-10
Topic: Cannan Announces 11 Series
### Original post:
70 th at 46 watts is 3220watts hopeful to get one to test it.

","[
  {
    ""hardware_name"": ""11 Series"",
    ""hardware_is_owned"": false
  }
]"
23300,"Date: 2020-07
Topic: S17+ keeps giving error after my PSU came back from repair from Bitmain...
### Original post:
What i meant by input voltage is the AC voltage from the wall socket which needs to be between 200v and 240v, you could also test the output voltage from the PSU which should be above 12DCV for apw9+.

### Reply 1:
So my PSU burned or blew it a while ago. I sent the PSU to bitmain for repair under warranty. When it came back, my S17+ just didn't start mining again.It keeps saying:ERROR: <truncated> Failed to initialize hash boardsI cleaned it all out, also did a factory Firmware reset with the SD-card firmware. Nothing, keeps giving me the same Error...Anyone got any more ideas?Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel com<rest of post truncated>

### Reply 2:
This <truncated> 15:30:20] ERROR: <truncated> chain[2] - Voltage is different, cur=485 mV tgt=21000 mV[2020/06/26 15:30:20] ERROR: <truncated> chain[2] - Failed to set start up voltageHere are 2 possobilites1- They sent you the wrong PSU that doesn't work with S17+, or they sent you a faulty PSU.2- The input voltage is low/high, can you use a multimeter to confirm that the voltage is between 200v and 240v ?

### Reply 3:
What do you mean by input voltage? From my wall socket? Or inside the PSU on the 6-pin socket?

### Reply 4:
Oh yes. I'm from Europe. It's 220V standard here ;-) And all my sockets are ok. I just think they sent me a faulty PSU back.

### Reply 5:
I don't know how things are in your country, but where I live the standard is also 220v but it's pretty normal to measure voltage below 200v, sometimes it drops to 150v in some places or even worse, so you might want to double-check if you are really getting 220v, and once and if that is confirmed, then that adds more strength to the assumption of the dead PSU, with that being said, I would still check the screws, make sure everything is in place, trying a different firmware might also fix the issue so do give it a try before sending it for repair.

### Reply 6:
Much better check the voltage flow from the PSU if you have a multimeter you can check if it is giving enough power(Must be 12v output). Anyway, since your miner is under warranty the only thing that I think much better to do is to send your miner back to Bitmain(The whole miner).Or send your miner to technicians who know how to check the VCC line from PSU to control board and hashboard. I feel that there are some damaged parts under the control board after the PSU blows up.

### Reply 7:
Just for the record if there is no load on the PSU there will be no output voltage. When I sent an APW9+ to my friend for repair he found only a dead fan, so I sent him a replacement fan and he said everything looked fine but still there was no output dc voltage from where the hash boards contact the PSU, there was however output voltage in the control board socket, so he assumed that the PSU needs to be attached to the miner in order to work, so I sent the miner itself, once he powered it on he said he was able to measure the voltage.

","[
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APW9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""multimeter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""replacement fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  }
]"
13626,"Date: 2019-10
Topic: Overclock Antminer S9 - Deploy Tool and access to set freq, volt, fan disable
### Original post:
Hi, that makes me look nice! I nevertheless ""find"" a problem, in the ""set-miner-config"" ...Code:cp <truncated> <truncated> -fThis will just erase the new configuration page once ""apply"" ... a simple oversight?As far as I'm concerned, I'm looking forward to the Bmminer for T9 + because it's actually exactly what I'm working on now, because of the decreasing voltage variant with freq, I'm limited to 12.5Ths stable in overclock (1400W at wall).

### Reply 1:
Hi,It's just one <truncated> in the package because there are 2 files the same, but with different name. I replace both files on the miner.For T9+, I tested and foltage setting works fine. I set it to 675 mhz and 920 mv for now to see how it holds. I think 930 or 940 is the hardware limit set on the pic as well as on the s9.Will post an update to this thread when it's live.

### Reply 2:
What conssomation?my T9 + test indicatesCode:Fix freq = 643 Chain [1] voltage_pic = 28 value = 820Fix freq = 643 Chain [2] voltage_pic = 28 value = 820Fix freq = 643 Chain [8] voltage_pic = 28 value = 820perfectly stable at 7.9Ths and 0.0003% hw (only 2 hashboard) and 920W

### Reply 3:
looking great!is the T9 available yet? cat it oc as well to 14TH?

### Reply 4:
Hi, I am still running stability tests of the bmminer, I don't think running at 14 TH/s will be ok for T9+ with regular cooling, so far I run it for 2 days on 12.3 TH/s with a freq of 675 . With 675 MHz it stays at 83 Chip temp, which is resonable.I did not do any consuming tests, as this is not usually my thing to do, the clients tune their machine by their environment, hashing rate required, wattage etc.I will post an upgrade soon which will include T9+ firmware and a config to switch between which miner you want to deploy.

### Reply 5:
very nice...thanks for your contribution to mining community!

### Reply 6:
My experiance on 2 x T9 + is:675Mhz - 810Mv (display in kernel log) and about 12.4 Ths for 1400W at maturityStrongly your Bmminer that I can adjust the voltage! because to mount the Freq does not give good result because the card hash moin quickly ...<link>

","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""T9+"",
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]"
16537,"Date: 2023-06
Topic: Bitcoin Mining Hardware from Blockstream
### Original post:
Mining will continue:Bitcoin technology company Blockstream has announced that it plans to reveal its highly anticipated <truncated> Integrated Circuit (ASIC) miner in the third quarter of 2024. This marks the culmination of years of engineering work for the company. Blockstream CEO and co-founder Adam Back made the announcement during the company's inaugural media briefing. In 2021, Blockstream acquired Bitcoin mining hardware maker <truncated> Blockstream successfully raised $125 million to expand its mining operations, and the company now plans to secure further funding. Initially scheduled for a 2022 launch, the release of the new ASIC miner has been delayed, and Back now expects it to be available in the latter half of 2024. Back explained that there are two manufacturing approaches, with the first being a test run referred to as a ""shuffle run,"" which is anticipated to take place in the third quarter of the following year.

### Reply 1:
So ... a miner with no specs ... that's useful ... NOTThey already posted it here 3 days before you also:<link>

### Reply 2:
Well, it would be pretty useless to announce the specs when the miner is at least a year away from coming to the market, this will only make competitors aware of the specs and rush to make a better/cheaper one.With that said, I don't imagine they will have much success in competing against Bitmain and MicroBT, if the miner is made in the U.S and isn't subject to the U.S tax on Chinese products that would give them a 20% price advantage when selling to U.S miners, but will that be enough to offset the manufacturing cost in the U.S vs China? I highly doubt it.Besides, Bitmain is already ahead in this regard and they started migrating the production out of China to places like Malaysia, MicroBT has some production in Thailand, so that tax advantage can't be there forever, I don't see a bright future for this project, but let's wait and see.

### Reply 3:
That makes sense, but i agree their announcement isn't useful since they don't even mention any advantage of their ASIC (e.g. most energy efficient, low maintenance).In addition, it's known what Blockstream product have mixed result. For example, their satellite and Core Lightning (LN software/library) are great, but Liquid (Bitcoin layer 2/side-chain) and Green (software wallet) has some issues with small user base.

### Reply 4:
It is useful for them, they need to announce it in order to raise funds, so it's either they secretly announce the specs to the investor or the investors would blindly invest in the project which is likely the case.That's a good point, and that is just the software level, this is going to be a combination of both software and hardware, Intel tried to make mining chips and sold them to mostly western companies (U.K, U.S, and Canadain based) such as Hive Blockchain Technologies, and ARGO, it's evident that all of them failed in competing with the Chinese giants, and intel had to stop it's mining chips <truncated> is now probably limited to TSMC (Bitmain's friend) or Samsung (MicroBT's friend), they need to outperform the chip design and cost. So unless they have invented or discovered something new, it will be very difficult to beat the Chinese in this regard, and all of this could just be another failed project.

### Reply 5:
FYI, their satellite actually is hardware where you can connect to their satellite to sync blockchain and broadcast TX. But talking about hardware and mining,1. They also create hardware wallet called Blockstream Jade. But it's relative new product.2. They have 2 service about mining which are Blockstream Energy and Blockstream Mining. But it's not aimed for individual, so we don't know how good or popular are those services.But at least they shouldn't be clueless about mining/ASIC.

### Reply 6:
Bitmain's S19 Bitcoin Miners Account for Bulk of Network Hashrate, Says New Research Three models of Bitmain mining rigs account for 76% of computing power on the bitcoin network, according to new research published by Coinmetrics on Tuesday.The Antminer S19j Pro accounts for 34.3% of the network hashrate and the S19 for 28.1%, and they have been the most used machines on the network since March 2021, Coinmetrics found. The Antminer S19 XP accounts for another 13.7% of the network hashrate, said the report. Meanwhile, MicroBT's M50 is below the threshold of detectability, the researchers said.Blockstream will have a hard time competing with Bitmain, but Blockstream has a big business of mining and hosting mining hardware.

### Reply 7:
A lot depends on what they want to do with the miner.IE super efficient at a higher cost might work.I have picked up a special controller with special firmware which allows the s19 xp to do 19 watts and 100th.So if you could build a spooner ruler to do 15 watts it could sell.I would like to see an efficiency war for <truncated> lost against bitmain<rest of thread truncated>
","[
  {
    ""hardware_name"": ""ASIC miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Blockstream Jade"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19j Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19 XP"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT's M50"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""special controller with special firmware"",
    ""hardware_is_owned"": true
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]"
23252,"Date: 2020-04
Topic: question: searching for long lasting antimers ?
### Original post:
1st of all, ""antminer"" refers ONLY to Bitmain's trademark name for their miners. It is not a generic term for all miners.By far the most reliable miners are the Avalon's from Canaan and worst are Bitmain's Antminers.I have had several dozen Avalon's running since 2016 with ZERO hard failures. The only faults were a dead fan on 2 of my oldest 721's.The Whatsminers from microbt are #2. I have 5 of their M10's and all are solid as a rock. Some issues have been reported here but still very few failures.Contrast that to an over 15% failure rate from dead hash boards and dead control boards on the 25 Bitmain s9's I had. Folks in the forum are saying that BM's newer S17 series are even worse... For one example, ref this post about BM's S17's

### Reply 1:
He should refer to them as ASIC miners instead, it's normal for the first/most famous brand name to be used as a generic term, which is pretty sad as far as mining is concerned.OP, I second NotFuzzyWarm's input but since I got your PM regarding this topic, I don't mind receiving messages asking me to participate in certain topics, everyone, feel free to notify me via PM and ask my inputs, however, some other members might not like it and your PMs might be reported and that will get you banned, so be careful about whom you PM.Back to the topic and since you asked for my input, I don't have enough experience with MicroBt, and I have no experience with Avalon but I can tell you that Bitmain aka Antminer quality is terrible, if you have the chance to buy any other brand, go ahead and don't bother with Bitmain, I do have to be fair and point out that Antminer S9 was pretty much robust compared to the new versions, but what I learned from other people on forum and off-forum is that Bitmain, in general, has the lowest quality and the shortest lifespan.The one thing that Bitmain does best is the delivery, you get the gears in time as promised like 99% of the time, with MicorBt some people <rest of post truncated>

### Reply 2:
I didn't know for sure that they were called minners an begginer's mistake i guess thats why i've asked your opignion i know you guys are more experienced in this domain .I have a french supplier that pointed to me Whatsminers M21S Bitcoin 56Th/s and Canaan Avalon 1066 and Canaan Avalon 1066 PRO wich were at a price of 1060$ and 990$ and 840$ i find that there price was resonable except they were quality of course, so i would like your guys opignion on those on particular cause im really intersted in them.thanks for your quick response and your advices .

","[
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    ""hardware_name"": ""Avalon 721"",
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  },
  {
    ""hardware_name"": ""Whatsminer M10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers M21S Bitcoin 56Th/s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan Avalon 1066"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan Avalon 1066 PRO"",
    ""hardware_is_owned"": false
  }
]"
16576,"Date: 2023-08
Topic: Working on a regulatory arbitrage play to save miners money|Let us interview you
### Original post:
Please DM me if you are a miner in the US with annual revenue of $1M+ interested in having a conversation about increasing margin through regulatory arbitrage. This is not a trading scheme or some DeFi yield. We are building offshore tax optimization out-of-the-box and fully compliant.Seeking community feedback,E

",[]
13621,"Date: 2019-08
Topic: New Bitmain S9 Firmware Preliminary Testing With Data
### Original post:
Is this the <truncated> version?Great data, now I need to run the numbers and figure out what SSH port it/does and if I need that

### Reply 1:
Any idea what the voltage reads?

### Reply 2:
Good question, I did not test, but it would be good to see the frequency and the voltage of each F/W settings. What is the best way to test that? Can it be queried from the API? Read only is still allowed.

### Reply 3:
my s9 13.5 with brains runs 15th/s just under 1300W Feq 675 voltage at 8.9I believe you'd have to measure voltage off each board. Also, my 14th/s on older Bitmain LPM FW runs 14th/s at 1230W. Will have to do some math but potentially 16th/s 1430 isn't too bad.

### Reply 4:
Would you say the older LPM version is better overall?Seems it runs a good bit cooler, small watt savings, and not much of a hit on the TH as well.

### Reply 5:
I'm not sure I would say better, I would say LPM is a nice all around f/w and pretty much required if you need/want SSH access.I ended up flashing 2x S9 and 1x S9i to the new firmware and running them all at -0.5TH. After 12+ hours I am showing more than a 60W decrease, so far it's actually close to a 100w savings with a very similar ambient temp as yesterday. Maybe this is due to autotune settling in and saving wattage on fan speeds. Not sure, I definitely need to let them run much longer for a good average and I'll be able to report back with better accuracy.

### Reply 6:
Mods, please, oh please do not merge this with the other thread. People need to see the subject line, as this has a day's worth of data (work) on my part Firstly! I hope Bitmain continues to release firmware with this kind of adjustability. Also note that this F/W disables SSH, so if that's important to you don't use it.This is really nice firmware, it gives you a total of 13 settings counting normal.Below are the preliminary test results, I say preliminary because each setting was run for roughly 30 min. Ideally each one would be run for 24 hrs or so, but I did not want to wait 2 weeks. Power usage and ambient temps were taken from an APC AP8941 ""smart"" PDU. Other data taken from the miner status page. Run time ~ 30 min each which is three polling cycles on the PDU. The S9 used to test is a February 2018 13.5 Th/S S9 with an APW3++ PSU. Please note the ambient temperature as this room is not temperature controlled and varies as the day heats and cools.Here's some rough earnings estimates at current difficulty and $0.06 kw/hr pricing, it's sorted by daily net income.

### Reply 7:
Um missed the part where he says?

### Reply 8:
My guesses would be below in no particular order.1. Less support tickets because people stop blowing up the software2. Less support tickets by locking you in to specific settings so people stop blowing up the hardware (faster)3. Stopping people from installing 3rd party firmware

### Reply 9:
Exactly why would they disable ssh for any reason? Like you can just lock us out of our own miners...

### Reply 10:
The T9+ also has the new firmware.Original info from my other post about it that is now locked:So far (3 hours) running with the ""hash rate unchanged- lower voltage option""I have seen a SMALL rate drop from 10.3T or 10.4T down to 10.1T or 10.2TI have seen the input power drop from close to 1500 to 1230As of now 19 hours in.Power is still down BUT hashrate has never gotten about 10.125 to 10.14Also there is no low power enhanced mode that the S9 has.-Dave

### Reply 11:
braiins may be better but this is decent if you don't want to use aftermarket firmware.I am playing with an s-9 space heater.So this or braiins may be just what I want.I figured a way to keep miner quiet. Using other fans and only 1 board.Here is my gear withLPM setting 1 board mininghash is 3300watts is 350

### Reply 12:
Wow, that's really good. What is the DB reading? I've been down-clocking an S7 just via it's web interface, but even at 3.6 Th/S (575 freq) it still uses 1000W. It's out with my other miners so I have not been able to measure the DB.

### Reply 13:
3 is the likely reason. Braiins OS single handedly extended the life of gear they had planned to retire earlier, forcing them to come up with nonsense like the s9e which comes with a similar <truncated> the T9+ is not working with Braiins OS yet, and this Bitmain firmware doesn't let you control speeds and voltages like Braiins OS does. Experience with Braiins OS using S9s has demonstrated that no asic hash board is equal, and global settings like those offered by Bitmain are subpar at best.Also with full control you can make your own LPM modes, more reliably than a naive on/off switch that causes trouble to some owners (especially with older hash boards).

### Reply 14:
Well this is one of those few instances where the third party is superior to the ""original"" for various reasons, starting with full free open source, which is about the same reason you would <rest of thread truncated>
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    ""hardware_name"": ""S9 13.5"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APC AP8941"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S7"",
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]"
24181,"Date: 2023-10
Topic: New control board for s17pro not working.
### Original post:
SO i changed password on s17pro and forgot it and couldnt use sd card to change it. so i got a new control board and now i can get into miner but wont connect or upgrade firmware, the last C.B. would not upgrade from sd card either.I get <truncated> Chain 0 only find 48 asic, will power off hash board 0.I was getting target voltage over 17v, i reconnected all the wires and got it to read the hash boards but now this, and i cant change firmware with upgrade via web Installer Not Signtured and sd card or awesome miner tool dont work???maybe Change cables to hashboards?It worked before i changed password, idk?Miner TypeAntminer <truncated> VersionSocket connect failed: Connection refusedKernel VersionLinux <truncated> #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018File System VersionWed Dec 25 16:31:06 CST 2019.Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0<rest of post truncated>

### Reply 1:
This sounds like a detection problem with the ASIC chips on one of ur hashboards. Ofc there are a few indicators which can cause the problems but as u already mentioned I would start to switch the cables and check the connectors to the control board aswell.Be careful: Overvoltage can and will damage electronic parts on the long run. If you are facing it again, I highly recommend to check if the psu is working correctly. Might swap that aswell. So if I am right you tried these options to upgrade ur firmware, right? Web InterfaceSD cardAwesome Miner ToolIf you are trying to upgrade via Web Interface due to signature error it just means that you are trying to install an unofficial version. It might be the case that its not signed correctly, so where did you find that?The SD card option could be the same problem. If you have the wrong version/firmware it cannot work.Make sure that you follow the Bitmain firmware upgrade guide (You can find it here: <link> the Awesome Miner Tool I cannot speak for myself because I have zero experience with it but I found this on their website:BTW: You would get more help from users if you would post this in the Mining Support section.

### Reply 2:
The middle hashboard only finds 0 ASIC there might be an issue with the cable or the Hashboard.About flashing the unit through an SD card you might be trying to flash the wrong firmware(with extension tar.gz) if you want to reset the password to default then Bitmain has an SD card firmware to reset it to default you can find it on TF card service pack file name is <truncated> need 7zip to extract the files and then copy and paste all extracted files into the SD card. After that, you will need to edit ""passwd.txt"" to the password you want before you flash it into the control board.The whole guide on how to do it can be found here ""SD card flashing with custom password""If flashing does not work then try to replace your SD card because maybe the SD card you using makes the image files corrupted usually fake SD card makes files corrupted.

### Reply 3:
I had a brand new sd card...... but anyways, i DLed the antminer tool from bitmain, it seen miner but gave status as lost, it said successful upgrade to firmware when i tried that i got but didnt work. and said couldnt connect to port 22. Then i hit the dhcp tab and now i cant connect to miner at all, tired to flash with sd card nothing, restarted nothing. Tired to add miner ip to dhcp wont add it... So now idk what is wrong is it the dhcp. Not sure what the dhcp tab did in the antminer tool....Ill try to flash it with the control board recovery tool and see what that does...Weird two control boards that wont flash from sd card. idkany insights are appreciated, thanks.

### Reply 4:
If you switch the miner to DHCP mode it would automatically change its IP based on your current network.This means the IP that you are trying to access is no longer the IP of this unit you need to use the IP report button to scan the right IP of your unit.If you don't know how to do it then follow this guide below.- <link>

### Reply 5:
DHCP does not belong to your antminer -- it belongs to your router, when you set the miner to DHCP it means the miner will have to request an IP address from your router, if for whatever reason your router does not do that you can't access the miner.So first thing first, make sure your router has DHCP enabled and that the search range on the Bitmain tool covers the entire DHCP table, or even better, get the miner's IP using the router itself.

### Reply 6:
down load angry ip or advanced ipsearch all your ipstypically your range may <truncated> will get a list of every piece of gear yo<rest of thread truncated>
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16554,"Date: 2023-07
Topic: The cost of mining bitcoin from large miners
### Original post:
""Roughly every four years, the reward for successfully mining a bitcoin block is cut in half. This event, known as the halving, reduces inflationary pressure on bitcoin. Currently, rewards are 6.25 BTC per block ($170,000) and in April 2024 they will be reduced to 3.125 BTC per block <truncated> publicly listed miners mine at a cost of $10,000-$15,000 per bitcoin, said Wolfie Zhao, head of research at mining consultancy Blocksbridge. Once the halving happens, these costs will double, bringing miners breakeven point to <truncated> with higher production costs per bitcoin will have a more difficult time surviving the halving. According to data compiled by Zhao:Stronghold Digital Mining (SDIG)- $8,200Cipher Mining (CIFR) - $8,600Riot Platforms (RIOT) -$10,400 per bitcoin in the first quarter.""<link>

### Reply 1:
See it as an investment into yourself. Setting up a miner has a learning effect, one with rewards. Teaching more people is needed and that badly.

### Reply 2:
Large mining farms are managed by a small number of good engineers. Other jobs are done by electricians and loaders, who do not need much training to perform job duties. At less than 10,000 per bitcoin, this is good business and it is now clear why so many companies are investing in mining.

### Reply 3:
In the second quarter of 2023, the cost of mining may be even lower due to large commissions thanks to new tokens. Companies are willing to invest in mining, but they risk higher mining taxes or being banned.In every country, the laws change as soon as many miners arrive there.

### Reply 4:
Miners should really figure out how to use solar properly, improve that tech, then use the sun. There panels out there that can handle decent sized wall rigs so maybe it's unseen thus far?

### Reply 5:
All the miners in the world will remember you if you teach them how to extract electricity on solar panels at night or how to extract electricity efficiently in non-solar weather.Hydropower or geothermal power generation is more attractive for mining.Solar power with batteries for backup use only.

### Reply 6:
It's good business when it has an attractive price. Nevertheless you can set up a rig and mine, you learn something and you might get pay-out off as you mine. Depending where you are mining. It's kind of hard nowadays alone to download the core.

### Reply 7:
Yeah, all those miners who have poured millions into data centers and gear are just so stupid and they haven't figured out how cheap solar energy is, they need some random dude on a forum to tell them so.An S19 burns 72kwh a day, in a scenario in which you get 6 hours of peak sun, remember just because it's sunny outside doesn't mean the panels are producing at full capacity, so you need 15 kWh of solar panels to be safe and 40kwh in batteries equivalent and this is to keep you safe only for one day.Now google a 10kw solar panel system and tell me how ""cheap"" that is!Anyhow, mining revenue per raw th is still 20% higher than at the start of the year, including that is the picture of dropping energy rates all over the world and it stops beings such an apocalyptic future. Remember that at the start of the year, the revenue was almost half of what is now so if miners have survived that they will survive a having even with just a 25% increase in price.

### Reply 8:
Indeed, solar energy is not a good 24/7 solution for anyone except those on grid that can over-produce and thus provide the rest of the grid extra power during the day, to cover their grid usage for the 66-75% of the time they can't use solar power.Energy storage is, to be blunt, in it's infancy, and anyone trying to store 100's of kilowatts or megawatts will have already learned the hard way how problematic, with current technology, that is.A real sustainable solar coin network would be one where miners only mine during the day when they have solar energy.Having world wide involvement would of course mean the network itself would work 24/7 without major issue, though the difficulty management would need to be timezone-hours controlled to ensure continuous transaction throughput rates.The main problem with this is that the big time miners are cheap, poorly designed junk.They can't handle regular power cycling and don't have power-up and power-down management at all.Considering how much power they use, this is ridiculous.(though wattsminers seem to do something akin to power-up handling by accident, with their default slow tuning when you turn them on)

### Reply 9:
Solar electricity is very good for large cities, because with the help of solar panels you can not consume the energy of the power supply plant during the day, and run the turbines only in the evening, night and morning. And this justifies itself in countries such as India or China. Home miners use electricity at night when it is 30-40% cheap.

### Reply 10:
It seems you have more knowledge abo<rest of thread truncated>
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16422,"Date: 2023-02
Topic: [MEGA TOPIC]  SOLO MINING
### Original post:
To be blunt, I'm not concerned if you don't include my pool in links above,but including a link to the thread by someone who is lying about my pool coz he doesn't like me,and trying to get hackers to attack all the miners on my pool as collateral damage, seems far from ideal.

### Reply 1:
Your pool if of course included in the list, as others webpages from your site, they are valuable for the community, especially for newbies.Excuse me but which topic are you talking about ?I can erase a topic of my list if it causes any trouble to you

### Reply 2:
Hello,I want to do this topic with the goal to centralize all infos about solo mining findable on Bitcointalk. If you find other topics / pool to add to the list, please add them in comment here 1. Pools Solo CK pool (active)<link> : <link> : <link> registration required, no payment schemes no pool op walletsFee : 2% Transaction fees goes to the solo minerServers available : USA (Germany ?)Kano pool (active)<link> : <link> : <link> fees are included in the miner reward. Pool op wallet.Pool fee is 0.5% of the total.Servers available : NewYork, Netherlands, Germany, Japan, Seattle, Los Angeles, Phoenix, <truncated> (active)<link> registration required, no payment schemes no pool op walletsPool fee is 1%. Transaction fees goes to the solo minerServers available : Europe / Canada / USA East / USA West / Australia (Sydney) / Singaporeviabtc (active)<link> fees goes to the solo minerPool fee 1%Servers available : Worldwide mining-dutch (active)<link> fee 1.5%bsod (offline)<link> fee 1.9%Servers available : Europe, Asia, North <truncated> (offline)<link> : <link> registration required, no payment schemes no pool op walletsPool fee is 0.4%Transactions fees goes to the minerServers availabl<rest of post truncated>

### Reply 3:
Right, I've deleted the topic from my list. Thank you !(yes MRR doesn't look very nice, their prices per Ph/s are crazy high !)I am more than happy that you Kano did all this work on your pool and on Gekkos softwares. I wouldn't broadcast any infos which make you inconfortable or which are just total bullshit.Have a nice day !

### Reply 4:
NiceHash is offering solo mining through buying packages of hashrate. We call it EasyMining since anyone with BTC can buy these packages and have a chance of hitting a full block reward. <link> you can buy a package for $2 to $200 worth of BTC and have a probability of 1:74000 to 1:740 of hitting a block. The reward is paid to your BTC wallet address of your choice (inputed before setting up an order).This also allows NiceHash to pay the miners (sellers of hashrate) more than mining to any other pool. Since the launch of EasyMining. We paid 6% more to the sellers (miners) than mining Bitcoin via pool.

### Reply 5:
As I've mentioned before this info seems problematic.1) Cheaper rentalsOR2) Paying miners betterYou can't do both.If you are paying miners 6% more than pools, then buying mining is going to cost a lot.If you also add your fee on top of that again, then it's really expensive to do your solo mining.If on the other hand you are wanting good price rentals for your solo mining, then that 6% + your fee isn't going to do that.You have two sides in your service.People trying to sell their mining for the highest price, and people trying to buy mining for the lowest price.They both clearly conflict with each other.If on the other hand, you removed that clearly dubious statement about 6% more than pools,you could say quite easily that you are cheaper than MRR - coz they seem to charge a LOT more.

### Reply 6:
I'm referring to this you linked:<link> the 2nd post about my pool, he posted the full userlist on my pool (only available to members)and wouldn't remove it when I requested (see my request and his ignoring it there also)I ended up having to get a mod to resolve it as you can see the names have been obscured.His comments about my pool and the fun run are false and he makes claims that are bullshit, trying to attack the pool coz he's upset about losing BTC to MRR who ripped him off.--Oddly enough I did the free opensource Gekko driver for sidehack.Seriously, he's attacking sidehack and 419mining also?!?lol - what the fuck is ""stinks heavily of surreptitious advertising"" even supposed to mean?For which he replied it was somewhere on reddit that he couldn't remember i.e. it's bullshitWell, the whole Gekko driver is open source ... that I released the end of last year and this yearYet he himself is running a solo run that does EXACTLY that - rather hypocritical complaint.and ignoring the fact I've paid out more than $100million in BTC ... but no one knows yet what will happen if he ever finds a block ...I restarted KDB ONLY twice in the whole of 2022(It's obviously mandatory for code u<rest of post truncated>

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23371,"Date: 2020-12
Topic: make m21s online check
### Original post:
Hellothere is any method for make m21s online, so if i not be at place of asic, i can check logs etc using remote...Thanks.

### Reply 1:
teamviewer and a cheap pc where the miners areoranydesk and a cheap pc + cheap monitor where the miners arethis one looks like a good deal for your pc<link> it withanydesk below<link> screen is from 75 miles from my house

### Reply 2:
there is no other way?

### Reply 3:
If you have a static IP address you could port-forward the router to your miner/s, but that could compromize their security, so if networking isn't your thing, then it's a high-risk move, I have to agree with phill that the only easy and ""safe"" workaround is via an external PC and some sort of remote managent software such as teamviewer.

### Reply 4:
Some small home firewall / routers have a VPN server built in. There are several Asus and Linksys that allow this. Not knowing were you are and which ones are available where you are I can't advise on models.All the better security products like SonicWall / Cisco have VPN ability too. This way all you have to do is connect to the router and you have access to the network behind it.-Dave

### Reply 5:
Many times a good router costs over 200 and a good firewall is also costly.The pc can be found under 150 a cheap monitor under 50. comes to 200if he only connects to the one pc from his house and his cellphone anydesk is free service.

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22997,"Date: 2019-07
Topic: antminer s11,no indicator but fans are spinning
### Original post:
Have you solved the issue?It seems that you replace a fan which is not compatible you need to disable the ""fan check"" to run the miner with other fans. If the miner fails to check the fan the miner will restart or will turn to idle mode. That is why not showing any light indicator from the miner. Can you copy your kernel logs from WebGUI and paste it here so that we can analyze the issue.

### Reply 1:
hellomy antminer s11 fan was noisy so i took a new fanthe socket plug was not fitting so i changed it with the old plug but cutting the wires and attached them ( Secured) , then after i turned my miner on there was no indicator light at all and the new fan spinnned for a while ( like 2 minute or so to see if something is up ) and stopped other fan was still spinning , then i changed the fan to the old noisy one , this time the fan starts spinning (both of them).i checked all plugs and all connections.no light on control board or hashboard, only few blinks on fault red light on the first time and after that no light at all. so i searched on google and came up with this on antminer website:i have one more s11 but the control board of that one is diffrent, the faulty one has same control board as s9i ( which i have also) all is same but one cable ( in s9 there is one cable from psu to control baord , in s11 there is 2,one small and one big )17.Issue: PSU cant work but fan is running. All the indicators are off.Reason: The control board cannot get power as the power circuit in IO board is damaged.Solution: Switch the BB Board and IO Board with good miner to troubleshoot the defective p<rest of post truncated>

### Reply 2:
website imgur.comis free post the direct link and I can make it show up<link> make it show I would do this without <truncated> like above[/img]you can't do it till you have posted for a while.

### Reply 3:
hithanks for the fast replayno i couldn't solvei cant access the UI i mean it dosent show up on modem router ,even when i replaced the original fan it is same, no indicator lights on , nowhere, only the fan are spinningbefore i changed the fan all was good only the fan was noisy, is it possible that the fan connection plug was not right and which part will get the damage.it never came up and after the first try which it was on and i was checking ip to access the UI from my pc, it was few minutes but when it was ok, after turning on the fan speed changed , it was spinning like idle low rpm and i couldnt access the UI via my pc , ethernet was not working, so i turned it off and it was very very cold,the hash board aswell, i followed the antminer website troubleshoot and unpluged hash boards , still the same, no lights but fan spinning idle mode.

### Reply 4:
@Mikeywith, you might want to slow down and re-read the post. The OP cut the **fan** plug because the new did not match the old. I am with BitMaxz on this one, the new incorrectly wired fan is causing/caused the issue as even if there's no network connectivity the miner will go through it's checks.

### Reply 5:
Unlike the majority of members on this forum , I do read every single detail related to the person who is seeking help, I helped a dozen of people here , you telling me this is like implying I simply rush to answer which is never the case.reading the OP only ( as many people do) is WRONG , there is a newer post in which he states the following.I am not sure if you ever owned a miner, but the control board must get an IP address and show up even without a fan , he must fix this problem first , there is a good chance that there is nothing wrong with the fan, and the only way to know this is to get to see the miner UI.I am not saying Bitmaxz is wrong and that the fan problem ( if there is any) shouldn't be fixed , but use your common sense, your car won't start and your first priority is to fix the radio, good 'effing luck

### Reply 6:
While we're on the subject of common sense... To use your own analogy, if I work on my car and change something and now my car won't start common sense say you go back and check what you did. In this person's case they cut the FAN plug, not the patch cable as you incorrectly ASSumed and even went on to say ""I don't quite understand what do you mean by changing the old plug, do you mean the male (RJ45) or the Female (socket) ,...."" So again slow down.Oh and BTW if you actually read posts here you'd see plenty from me and know that yes, I do own miners.

### Reply 7:
I have not incorrectly assumed, i merely guessed what could have been the problem, a faulty fan / bad fan wiring do not cause the miner to not show on your router, i thought he might have altered the network cable ( which is the first reason why a miner wouldn't show up on the network) unless the control board is toasted which again can't happen simply for using a bad fan.Back to my analogy, if someone says they cut the radio wire and engine won't start,<rest of thread truncated>
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22876,"Date: 2019-02
Topic: which switcher is good for miners
### Original post:
I have 10 miner and i need a switcher now. I know that the switcher TP-Link is good but don't know for 10-15 antminer s9 i must buy switcher gigabyte or megabyte is enough?please guidethanks

### Reply 1:
100Mbit is fine for miners, you probably want a 16port switch. If the cost is no different go for gigabits, but technically ASICs don't use that much bandwidth.Brand wise, any of the mid range brands like tp-link, dlink or Netgear would be fine.

### Reply 2:
100 works well like said above. Because miners are chatty, you just need good gear that can deal with a ton of packets per second. This is because when miners submit packets of data, they barely fill each one as they are sent out.Search on ebay for used Cisco switches, as older model enterprise gear is perfect for miningI HIGHLY recommend the Cisco Catalyst WS-C3560G-48PS-E SwitchAlso note that as you expand your operation, you will need to be sure you have an adequate router as well

### Reply 3:
I agree with biffa 100 works you don't need 1 gigabit speed.I would suggest getting a 24 port over a 16 port as plenty of good ones well under a hundred bucks.I have 4 of these<link> a ten pack of these<link> a pack of these<link>

### Reply 4:
Check these cheap 2 switchers below good for 10 to 15 miners. Look at this one it sales today and it ends in 12 hrs before the 37% price discount gone.<link> this one <link>

### Reply 5:
I though this would be about power switching. I have never liked trend net personally. I'd look at netgear (even I eyeroll saying that) or better yet any cicso product.

### Reply 6:
Any simple 100mbps switch will do. TP-Link is one of the cheapest brands on Earth, and its not exactly ""high quality"", but it should get the job done. I wouldn't bother with neither gigabit nor ""smart"" switches, but gigabit wouldn't hurt, or maybe those with just a couple of gigabit ports for cascading.

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16457,"Date: 2023-03
Topic: Looking for leads on cheap power
### Original post:
I dont know where to turn anymore so Im giving it a shot on here. Im from Canada and looking for something under 5c usd where I can get 1-30mw without having to bribe anyone because the upgrades are expensive on their own.Quebec : too corrupt & working with bitfarms to keep the mining monopoly.Manitoba : miners left a sour taste for most real estate people when all the miners ditched town in 2018 and stopped paying. Most landlords wont let you do it & buying a place and setting up takes at least 8-12months.Labrador : very cheap but hard to get anything done.If anyone has any leads on a place that has at least 1mw to start with let me know please. I will cut you in on the deal. To clear it up, Im not looking for hosting as every single hosting place is highly unreliable. Im looking to have my own place and expand to reliable colo/hosting in the future. Been in the mining space since 2016.

### Reply 1:
Just to clear it up, I dont mind anywhere in North America as long as the price is right.

### Reply 2:
I have 400amps at 480 available at 4.3 cents hydro sourced mostly hydro/wind a bit more but don't know the number. Zero facilities for it, just connex box and hook it up. NE Oklahoma

### Reply 3:
You're better off finding an existing mining farm who's going bankrupt and taking over the facility from them or buying them out. Sub 5-cent industrial power is hard to find these days after what happened to the natural gas market. Existing warehouses with 1MW of capacity installed are very hard to find for a reasonable rent.The best location I ever found was a former pork processing plant in Northern NJ with 1.25 MW of power at 6.5/kWh. The rent was $4000/month.

### Reply 4:
Currently i'm working on filling up a 300AMP mining farm which kept it at residential leaving my bill at 0.0595/kwh with a little bit of a fluxuation during season this is with no solar or wind and both are viable building to scale.

### Reply 5:
We can average around 4-5 cents/kwh where I'm located. We're looking for capital and/or partnerships to help get us up and running on several different locations as well as using flare gas/stranded natural gas for mining. I believe we have 3-4 on-grid locations with around 10MW, 2-3 locations on-grid with 2MW and several flare gas sites we could work with. It's just hard to make any promises ahead of time due to the amount of variables but our farm averages sub 5 cents at least. Not a fixed rate, averaged.

### Reply 6:
Hi OP, you can PM me. Might have something for you..

### Reply 7:
Hi OP,Just posted a new thread on the same topic - we have the capability to supply your project anywhere from 1 MW to 200 MW at our infrastructure sites in Alberta. We would be providing you sales-quality gas, which you can then turn into power on-site with generators. We're completing a 10 MW project with another client from China as we speak.Send me a PM and we can discuss further.Thanks!

### Reply 8:
OP, feel free to PM me, I might have something for you, too.

### Reply 9:
Alaska has a some methane releasing lakes and ponds. Capture the methane with a large float-able doughnut shaped plastic device with a dome like plastic cover and tubing to the land. It should be anchored in place as well. Clean/process the methane gas and run it in a diesel generator. You will be using diesel to idle the engine and the methane to bring it up to working speed. Use the Bitcoin Blockchain fuel saver on the diesel generator for better efficiency. Also keep your miners and camp away from the lake and generator.There will be a lot of challenges to overcome (permits, logistics etc.) and this is not for faint of heart. Maybe make a show on the Discovery channel and get them to help! I would watch it!Another option:Running a diesel generator on waste oil, using the Bitcoin Blockchain fuel saver. This could be a community project. Get local restaurants to supply the waste oil and split the Bitcoin accordingly to costs and work involved. The fuel saver works pretty well so don't skip it! I use it in all of my diesel vehicles. Saves a ton of money! Farms and landfills are also a great source of renewable methane so don't count them out.

### Reply 10:
Problem is that few cents per kWh won't even cover the generator capex+maint even with free fuel. And waste oil is not free as there is considerable collections, storage, etc. costs. This is a very hard price which is almost impossible unless you have something in place already like a huge dam for 50+ years already so it is free (and you are still in race with other buyers), or a gas power plant with no customers and plenty of cheap gas, etc.

### Reply 11:
PM me pls if still actual

### Reply 12:
do let me know if you are still looking for a place. happy to talk/discuss in detail.

### Reply 13:
If you feel confortable with the location, Lybia is a great option, the cheapest grid electricty worldwide

### Reply 14:
The<rest of thread truncated>
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10903,"Date: 2020-11
Topic: My new 300KW minipod...
### Original post:
I can't escape you Scott. Good work all around.

### Reply 1:
I'm everywhere lol.... I can't figure out how to change my username on here though lol I signed up for this many moons ago lol

### Reply 2:
Working on these for sometime. Happy to finally have something to bring to market.New 300KW mini unit, 90 new gen miners.<link>

### Reply 3:
These are some beautiful mining containers, i really like them and i don't think i have seen anything that was better built than this, good job.

### Reply 4:
I guess it could be in hardware section of mining.So some fast questions.Where are you shipping from? USA, ChinaI like it and could want one.we have three phase 208 but I think the feed panel is 800amps of 480.shoot me a pm.My location is New Jersey.

### Reply 5:
Thanks for the positive feedback guys. We are based in Toronto, Canada - but I ship to the US often.They can run on 480v if you miner supports 277v, but we need to put a small transformer in for the fans, lights, and network switches. Alternatively they can be 415/240, or run 208v PDUs.I'll shoot you a DM with more info. Happy to answer any other questions anyone has.

### Reply 6:
I have to check with my notes as I know we have a three phase and we have 800 ampsI dont remember if we are 480 into 208 or some other drop downwe generally get 217 to 229 in our panels. once we break down from the 480 or what ever it is.

### Reply 7:
Once I know your setup I can let you know the final price. 208v PDUs cost more than the standard 415/240 PDU that comes with it, but not a massive amount.I tried responding to your DM, but I'm limited to one message per hour lol.

### Reply 8:
It's fairly common in the USA to have 480 phase to phase, and 277 from one phase to a neutral. There's usually a stepdown transformer to provide some 120/208 but then again, many things CAN run off 277/480. In commercial buildings that is.

### Reply 9:
There is no 'may' about it: those *are* the 480/220v step down xmfrs.

### Reply 10:
Incorrect.In the US, 480V service is the start of what is usually called ""heavy power"" and usually only available to industrial areas and large commercial developments such as malls and office buildings. In large buildings it runs HVAC and is also distributed throughout the building to feed local 120/208V transformers that feed power to different areas of a building.The only common use for the direct 277V phase-to-neutral is for overhead lighting fixtures designed to accept the high line. The 3-phase of course supplies large 3-phase loads. For all virtually all other '200V' devices, they usually top out at a maximum input of 240V and WILL quickly fail when fed anything over 250V.

### Reply 11:
we are a ware house built pre wwiiour concrete slab is six feet of poured concrete. the orginal use was building military gear for wwii.we have many panels for power andI checked we are 480 and we are 3 phasewe usually run at 219 to 229 on each and every phase.however there are two really large transformers inside the ware house that may help the 480 turn into three phase 208/220I know there are three legs labeled a,b,c and each 30amp feed has a,b or a,c or b,c gives us 219 to 229 pretty steady.

### Reply 12:
yeah I was pretty sure just worded it carefully. As I am far from expert when it comes to high power setups.we could run a lot more gear but the fud caused by covid-19 has set us back a bit.going to meet with warehouse owner this weekend and talk a bit.I would like to run a mini pod with all s19 pro maybe a mix of t19.

### Reply 13:
Do you have a video or data on the sound coming from a fully stacked pod?

### Reply 14:
It will be pretty hard to estimate how loud a fully stacked pod is just by watching a video so an exact decibel figure would be much more useful, but rest assured that it is indeed loud as hell, 70 new gen miners mean 280*6000rpm fans(70*4 fans per miner), that alone is a ton of noise which can't be suppressed, and add to it a single 240k cfm or 4*60k cfm fans, the sound level will be sky-high.I always say this but let me repeat it, if noise is an issue you shouldn't be thinking about mining on any large scale.

### Reply 15:
I think one box has a 15k cfm fanI think you can join four boxes and go to 60k cfmwe have one 13.8 k cfm fan it is not crazy loud as it has a four or five foot width. it does not spin super fast .so it is deeper pitch and not terrible.but like you said 70 units with four small fans each will make tons of high pitched noise way over 85db.

### Reply 16:
Impressive work on these.How weather resistant are they? Do you ship to Europe?

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24140,"Date: 2023-07
Topic: How to set up asic miner electrically
### Original post:
I bought an Antminer E9 Pro. I currently only have 1 dedicated outlet. The outlet is an L6-20r. What do I need to get to hook this baby up? I can't seem to find a pdu that has an L6-20p with built in surge protection.

### Reply 1:
That pdu has an L6-30p plug which will not fit an L6-20r unless I'm missing something.

### Reply 2:
Ya sorry my bad, the one I linked was indeed L6-30p, couldn't find a PDU with both L6-20p and surge protector, how about using a good adapter like this one, it's rated for 20A 250V.That way you would have more PDU options and won't have to change the outlet.

### Reply 3:
if you are in the USA.buy this<link> protection pdu's are costly and likely to not be needed.it will be more important to protect your eth cables

### Reply 4:
Where did you search? a simple google search takes me to this link This PDU is 7.2kw which is more than enough for your E9 Pros, it has 4*C13s which is enough for the two gears (each miner will need 2 sockets).

### Reply 5:
I appreciate your reply. I had come across those but was unsure if that was safe to use not being familiar enough with electric. I guess since I won't be going past the full (or 80%) 20a capacity since I'll only be using that one miner. it should be fine. I will probably go that route. Thank you.

### Reply 6:
With only 1 E9 pro, you are not going to go above 10 amps, the E9 pro only needs 2200w which translates to 9.2 amps on 240v, which is less than 50% of the rated capacity of that converter, should be pretty safe to run without any issues.

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22899,"Date: 2019-03
Topic: S9 hardware version
### Original post:
Most likely you made a mistake in your worker/pool.Make sure you have no spaces in it, also try a different pool.This error usually means cgminer has not started correctly, in many cases a simple reboot fixes it.

### Reply 1:
i have S9 14Ths. last week my miner is not working its because the following:-Hardware VersionSocket connect failed: Connection refusedKernel VersionLinux <truncated> #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016 (is this correct?)File System VersionWed May 3 18:38:52 CST 2017BMminer Version(empty)why its not upgraded even though i already downloaded the firmware and upgraded it?

### Reply 2:
One thing i do is ssh to the miner and ping a known server on the internet to verify things are working properly. This could be a configuration mistake. But do wait at least 20~30 minutes, if your local network is sub optimal, it might take that long...

### Reply 3:
Read the logs to see why CGMiner crashed. This is not about the connection to the internet but rather the connection between the UI and the CGMiner's API.

### Reply 4:
Your bmminer is not running. If you would kindly copy and paste your kernel log here, we can probably figure out why.

### Reply 5:
Less info less answer you can get from your problem you must provide a detailed problem or complete kernel logs.Your problem is both hardware version and Bmminer this usually happen every first boot of the miner so I'd like you to try first to let it run for 20 minutes. If still doesn't work try the troubleshooting guide below. - Do a hard reset if you don't know how to do the hard reset follow this guide How to reset miner to factory settingsIf resetting it to factory default does not work do the next step below- Flash the miner with this firmware <truncated> this still doesn't work try to follow the troubleshooting guide from Bitmain step by step from here ""S9 & T9 series miners: no hardware version found or BMMiner""

### Reply 6:
THIS IS MY 13.5Ths entire kernel log. Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256528[ 0.000000] Kernel comman<rest of post truncated>

### Reply 7:
According to your kernel log it looks like bmminer is starting without any issues. Hashboards look OK too. I would double-check that you entered your pool details correctly. You can also try pinging the pool from your miner's Network > Diagnostics section.

### Reply 8:
I am almost certain that he either has a typo somewhere in his worker/pool details or all the 3 pools are dead , this problem is most often related to what i just mentioned, he however completely ignored that, and he did not update the status of whether or not he double checked those information.It's a bit hard to help people when they do not follow everybody's answer closely and update their findings.

### Reply 9:
How did you wire your place with three phases? Something similar might happen if the PSU can't provide enough power to the miner. I heard trying to run the miner off 120v input, for example, can cause a similar problem as the PSU is able to provide enough power to turn the miner on but not enough to keep mining.Please get a multimeter and put it in AC voltage mode (1000V) and check the power input at the plug. It should be in the range of 210v-240v anything more or less (especially less) can cause a similar problem. Then put your multimeter in DC voltage mode (200v) and check the output of the power supply to the miner. It should be like 12v to 12.8v, anything less shows that either power supply can't get enough from the plug and wirings or that the power supply itself is faulty.If this happened after you upgraded your power wiring and happened to all of the devices, I believe you should try checking if this is in fact caused by this change or not. Maybe move one of the bad devices to your home and check it there.I personally keep a power meter around to check<rest of thread truncated>
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23302,"Date: 2020-07
Topic: Purchased Used T15
### Original post:
You beat me to it phil... I was just writing the same answer. Also, similar problem happened here:<link> feel free to watch that thread sbcal403.

### Reply 1:
HelloSetailsHome Eclectic - 120vBoth devices are in the garage on different circuits. i have made sure.Using low power mode on both devices. i have made sureUsing 14g cables for power cablesusing serge protect 500jouls with 14g cableI purchased a used t15 and s11.I ran the s11 first 24 hours. no issues with other devices running at once dryer, AC washer. no space heaters in the house.I then power on the t15 and let it run together. everything is running fine for over 24 hours. in that time dryer, stove, AC all been on/off in the houseI am getting 38thz on slush pool.Issue:I wake up today and T15 is offline. the device does not power on. no fan spinning. <truncated> different power cable.tried different wall outlet in the home away from garage.I have verified the outlet is working with other devices iphone charger, volcano vap, laptop charger. outlet is working.Breaker is not trippedNo power serge or have had them at my house. living hear for a while.S11 is still running to this moment no issuesResearch doneI fine maybe the power supply has entered power protection mode and need to be set to bitmain.or is the power supply just died from it being an old unit?please advice would be gr<rest of post truncated>

### Reply 2:
Don't be insulted. I just wrote the problem below.You can not run a t15 on 120 volt you killed it.You wasted money.You are at fault.This is as simple as I can write it.You could order a psu from bitmain.So if you buy the replacement you need 200-240volt input.Sorry for your loss of money.Edit :I checked the s11Oh some more newsthe link for the s11You will soon kill the s11 psu. running it on 120 volts.

### Reply 3:
The previous owner never has an issue running them on 120v. he said he did for over 9 months then got 240vcould it be just the Ps time to go?

### Reply 4:
And you believe him over the company who made then?If i where you i just run to the S11 and disconnect it.

### Reply 5:
Okay lets try to explain it.They have a max amp rating and they are designed to do about 1600 watts on low.so1600/240 = 6.67 amps1600/200 = 8.00 amps1600/120 = 13.33 ampsthey rate to 12.5 ampsso if you provide 115 and you friend provides 1251600/115 = 13.91 amps not close enough to 12.50 amps1600/125 = 12.80 amps close enough to 12.50 amps that the gear may live.If you are in USA it is summer YOU could be as low as 110 or 108If the power is far from the main breaker you can sag to 105so 1600/105 = 15.32 ampsBut your money your gear you can buy a psu from bitmain and try it agin.Or run it on 220-240 volts.

### Reply 6:
ok so let me clarify morei have an older models1119thz on high power and 17thz on low power mode19.5thz @1365 watts17thz@1120So i have a power meter on it the s11 and i see on power on it goes up to 1450 watts then lowers to 1140 watts and staysits goes to 9.7ampsalso on the bitmain website it says under power supplies support1. Generally if your miners requires more than 1200 watts the socket must deliver 220v.Google says yes i can make sure its on 15 amp circuit and nothing on it with 14g cable.Modern circits are 15amp and max load of 1800wattsthanks for the help so far.

### Reply 7:
Both T15 and S11' PSUs are rated at 1850w on 220v so that's a max of 8.5 amps, 1120w on 120v is 9.3ams, so you are already pushing over the limit by a small factor, but still I think it's only a matter of time before you toast it, antminer T15 probably consumes a bit more than it even at lower power mode, so about 10 amps or more, more than what the PSU could handle.Long story short, the PSU is toasted and you should STOP running the other miner on 110/120v.

### Reply 8:
Yes -- and no. Unless they are dedicated runs to high power equipment be it a miner, microwave/toaster oven, the 15a ratings are given assuming 'typical household or office' loads. That means that hairdryers pulling 1,800w are fine - assuming they are not pulling that for more than a few hrs at a time per day but a much lower constant load is expected.A standard rule of thumb is to never load a circuit to more than 80% of its rating. For 15A circuit it is a max of 12A that is safe.

### Reply 9:
Don't bother he knows better than you or me.His gear and his money. Not ours.Brownouts in the summer never happen where he lives.So it will work.When it stops working it will be because it is old and not because it was abused.

### Reply 10:
Not to sound mean, but both you and I wouldn't run APW8 on 110v, so it looks like we might actually know a little bit more than what we think we know.Indeed, but I really hate to see someone toast their mining gears, the feeling I get when I check my hashrate and it's lower than it was yesterday is tragic to say the least, it hits me really hard, although by now I should have become immune to that, sa<rest of thread truncated>
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16558,"Date: 2023-08
Topic: Binance Pool Launches Presale of Cloud Mining Products
### Original post:
While we prepare for Bitcoin halving of 2024 which is projected to drive the next bull market, notable companies are reposition for Bitcoin mining and other business continuity plans. The latest in this rank is Binance that have launched a presale for Cloud mining products. According to the announcement by Binance, mining activities will start in October 2023, following the conclusion of their cloud mining products presale that is starting today to end in early September. Check out details of this in Binance MiningThis, I think, is one of the ways momentum is building up and new money will flow into Bitcoin and cryptocurrency in general as we brace for the having that is projected to see Bitcoin hit new ATH.

### Reply 1:
Old news and we already have multiple topics about it:<link>

### Reply 2:
Op I suggest you should lock this thread since something like this already existed as stompix already said.

### Reply 3:
Thank yiu for drawing my attention to it. I actually checked but didn't see. I will lock the thread now. On it now. Thanks for your suggestion

",[]
22898,"Date: 2019-03
Topic: Low hashrate Avalon 851
### Original post:
You might want to post the Cgminer API log for starters!!

### Reply 1:
And also post in the Avalon Support thread <link> along with reading that thread - at least the 1st post - as you may find your answer already there.Oh, and when posting the API log please be sure to use the CODE tag (looks like # ) so the log does not become a wall of text....

### Reply 2:
HelloI Have trouble with this Asic , its Hashrate is very low..PSU 1800WPlease see the screenshot<link>

### Reply 3:
I looked at your screen shots they are for 5 minutesand you overclocked to +1so try showing a 1 hour screenshot not a 5 minute screen shotand try it with no over clock5 minutes is pretty much worthless for telling true hash rate.and the 851 is power mad hungry on over clock so the 1800 watt psu could be too weak do no over clock please.

### Reply 4:
I suspect that there might be a language barrier in this case

### Reply 5:
Thanks for the replyMy device is new. But its Hashrate is very low Average Hashrate 9.5TH/SWatch new IMGwhat should I do?<link>

### Reply 6:
that psu is no good it does not have enough power it is 1600 watts not 1800 watts.set the miner to 0 not +1show me a 2 hour hash rateTell us your native language.

### Reply 7:
The Avalons report what your PSU is feeding them. Check Status > CGMiner API log. Near the top you will see:Code:[Firmware Version] => Avalon Firmware - 20180305 luci: 62d814c cgminer: b5b497e cgminer-packages: 960e108Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[7644726] MW[2363602990 2363604773 2363605616 2363606435] LW[9454419814] MH[4221 4182 4394 4095] HW[16892] Temp[43] TMax[87] Fan[5760] FanR[100%] Vi[1203 1203 1212 1212] Vo[3773 3798 3825 3827] GHSmm[13748.50] WU[190936.23] Freq[768.59] PG[15]The line Vi tells you what the PSU is feeding to each of the PMU's (Power Management Units) and PG is a generic Power quality value.In my above example the PSU is feeding 12.03, 12.03, 12.12 and 12.12v to each of the PMU's and PG is the typical value of 15 (very good). If PG goes below 13 or so you will have problems with boards dropping out.Using the Code tag (looks like # ) post your API log here.

### Reply 8:
Dude,You have the new low power firmware installed.That's why your hash rate is lower than stock A851.Please read this carefully to fully understand what I mean:<link>

### Reply 9:
thanks for your responseWhat should I do to solve the problem? Revert to older version?

### Reply 10:
HelloCGMiner API log See ScreenshotSo the problem is the PSU?Bitmain Antminer APW7 1800W Power Supply For Avalon 851 Is it right?<link> My Psu it is 1600w?0 or +1 Average Hashrate 24h 9.5TH/S.

### Reply 11:
thanks. downgrade firmware Controller and Machine both?

### Reply 12:
Thank you very much. My problem has been resolved

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23170,"Date: 2019-12
Topic: Innosilicon T2T 30TH problem
### Original post:
HelloSo I finally finished setting up my farm, 40 T2T units installed, For a week started mining no issues and then first unit got Error code 35 then second unit also, now I can't use both units with Error 35 ( <truncated> 8.66 2048).Would really like some help from you guys.Thank you in advance

### Reply 1:
I just got an answer from the other forum while searching on Google according to them you need to flash the miner to the latest version. You can download the latest version from innosilicon download support. Link from here <link> make sure to download the right firmware for your miner.

### Reply 2:
Thanks for the reply, I already Updated the firmware to the latest version, but still giving the same error.

### Reply 3:
If it doesn't work try to read this link below.- <link> can find the answer under ""How to locate the faulty part by the error code of the miner?"" If their solution doesn't solve your issue you might need to replace the power supply or send it back to innosilicon for replacement or repair.Maybe the firmware version you flash might be incompatible for the PSU of your miner that is why you get this error.Do you have a miner tool installed on your PC(On the same network)?Try to use inno monitor tool and do this step to check the PSU vendor, PSU version and errors.the InnoMonitor can be download from here <link> the guide is under their faq page. You need to read this ""How to update T2TZ-30T or T2TS to the latest firmware?."" It might help to troubleshoot the problem if you get the PSU vendor and PSU version post it here I try to help you find the right firmware for your miner.

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13667,"Date: 2020-10
Topic: Bitminter client (Windows/Linux/Mac)
### Original post:
Wow, all you guys with your high powered rigs.I'm just starting out and am currently running 9 Antminer U1 at 2Ghps each and 5 ASIC Miners at 336Mhps each and am barely hitting 20Ghps.I'm selling the 336's and just bought an Antminer U2.I also plan to replace the resistors on the U1's and put new heat sinks on them.I need to see if I can get a thermal image of the Antminer to determine where the best placement of the heat sink should be.No reason to cover more area if it's not being useful.

### Reply 1:
Glad you have ironed out most (if not all) the U1 issues, now sushi is pumping U2.Will help with overloaded USB hubs as you can only put 4 in most 8 port hubs.Hoping U2 runs well in bitminter, as U1's will soon not be available new.In all this meantime, I have become friends with BFGminer as 3.10 ran the U1's well.Thank you for all your work on this device software.

### Reply 2:
I'm running three 30gh/s BFL ASICS with no problems. I'll be adding a 60 gh/s if it comes in the mail today. I'm a big fan of Bitminter and the highly proactive Doc so if you're new.... welcome!

### Reply 3:
Bitminter client supports all BFL products so far except the upcoming Monarch. Hopefully I can add support for that too.

### Reply 4:
Mine have just fine so far, there doesn't really seem to be a difference in recognizing U1's vs. U2's. They both seem to fire up at 1.6GH/s before you overclock them to your liking, and just show up as Antminer in the device list.

### Reply 5:
I have a dozen Chili miners running with no problems since 1.5.0 came out

### Reply 6:
Received my first Antminer U2 and am not impressed.All of my U1 work at 1.9 or 2.0. U2 was supposed to be able to hit 2.2 without issue.My first U2 only does 2.0. They don't look much different than the U1 other than the larger heat sink.

### Reply 7:
My version 1.4.3 is unable to start .?When I looked at the clients 1.4.3 was still the official stable client .Is 1.5.0 now the official client ?

### Reply 8:
What happens when you try?Does it help to clear the Java cache?<link> 1.5.0 is the latest version so that's the version you get unless you have been using a version-specific link.

### Reply 9:
When you can please re-implement an updated cpu miner.1.4.2 is what is available. and this error that was corrected prevents us from conecting to the servers.I used other miners, but the work does not seem to be getting turned in, as accurately as your software you provide. even though the hashrates are faster in some. none have come close to te 1.4mhs i was able to get with the provided software. cpu only.i realize it may be a pain to put it in now, i'd be fine with a stand alone cpu only version of the same software.Would there be any other reasons the java client is not able to connect to your servers? it's almost as if we are ddosing ourselves or something. By loggining in .... i can't imagine the servers being overloaded yet.

### Reply 10:
Did I just read that you are trying to mine bitcoin using CPU so you can get 1.4mhs?If so, I'll spare you the normal reasons why you shouldn't use a CPU and just leave this one reason here: Even if you mined for 10 years at that speed, you wouldn't ever make enough to be able to withdraw it from the Bitminter website.

### Reply 11:
1.4.2 should connect fine.Two reasons not to CPU mine:1. It uses much more in electricity than what you earn. The more you mine, the more money you lose.2. Like PCMiner just said, it is so slow that what you earn will probably never be more than ""dust"" which is not enough to withdraw.And if you still want to CPU mine, don't use Bitminter client. The best CPU miners are 10 times faster. I never had time to implement fast CPU mining, and it doesn't make any sense now.

### Reply 12:
this makes me sad now. I had much better earnings when i was able to use the software provided dependably. this is why i keep asking for it to return. But dr says it should work fine. it must be something on my end causeing issues.i already obtained 1.4mhs. cpu with your software. it's not just the software but system configurations (unlocking your os) and hardware potential.i've already withdrawn,,,for last year...i was hopeing to enable better earnings this year. I guess you can pm me suggestions for other cpu miners. google hasn't been helpful. i end up finding virueses and trojans instead.

### Reply 13:
How on earth are you making money CPU mining bitcoin now? That hasn't been profitable in years. Even with free electricity you can only earn about 1 cent per month with a modern CPU.

### Reply 14:
CPU mining for Bitcoin is dead.I'm running ~360GH/s of ASIC miners, and will be lucky to mine 1BTC per month at the current difficulty.

### Reply 15:
The question was rhetorical. Only altcoin miners and botnets are cpu mining these days, neither of which is relevant here.

### Reply 16:
Bitminter client v1.6.0 beta1 is ready for testing.New:Switch to S<rest of thread truncated>
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10831,"Date: 2019-07
Topic: Buysolar and I will getting the A1041 to review and demo.
### Original post:
We got tracking for these today. May show by Friday the 28th of June.A lot has happened Since I started this thread BTC is over 10.5k!It was 8.7k when this thread started.from canaan websiteSpecs are:order link below<link> blue bolded the most interesting feature of the new gear. No one else does this.If the eth cable linking works well this will be a knock out product.The savings on switches for a 50 rig setup.Shorter eth cable runs.Buysolar and I will each get one of these unitsWe will run them apart.We will then link them via eth cable.Assuming it works as expected we will order at least 10 of them.I want to thank Steve and Lily for sending demos.

### Reply 1:
Psu should also be built in.I am really excited about the eth daisy chain of these units.I have no idea if they can do 254 but if they can do 40 well it is good enough .With our Warren super build cancelled> We lost bid for the 140 acre property.Warehouse owner and partner with buysolar and I Have switched and are going to plan 'b'We will expand power at the current set of warehouses from:65k-watt to 175 k-watt build out.Then expand again from 175k-watt to 475k-watt.Solar will cover the first 90kwatts. the rest will be at 5 cents.The expansion from 65kwatt to 175kwatt is done on the power side.We have 23kwatts of gear to put in now.So by next monday will will have 88kwatts running and 87kwatts to fill.These new avalons figure heavy for us.they are pretty dense at 36.9th and we won't need anymore switches if the eth daisy chaining works.Are they the most efficient gear no they are not.But no switches needed saves $$$Short cheap eth cables saves mess and $$$If they are as reliable as the A921 or the A721's the 130 mile round trip to fix gear will be reduced greatly.We were up in Clifton last thursday cleaning all gear with an air hose.After 8 hours we did of the gear and have to clea<rest of post truncated>

### Reply 2:
Avalons are a beast when it comes to reliability, I've never had a real issue with one. It's been a shame they haven't been able to come out ahead of everyone else on an efficiency launch. I think it's been a huge step getting rid of the external controller then following up with the Eth daisy chaining keeps them unique and easy to network. All the benefits without the potential points of failure. I wonder if these will still be able to operate as 1 worker for all linked chains or if they will now be individual workers. It didn't even dawn on me the switch savings, I'm lucky enough that I'm still small and can get away with a couple home routers networked together to meet my needs and boost the home wifi network.

### Reply 3:
I thought they were supposed to be 1736W @ 31TH?

### Reply 4:
maybe they are maybe not as the psu I have could simply be a 88% psu.I am posting a video in a minute you can see this is clearly in beta status.Your video will be live at: <link> above will take time maybe 10 more minutes to load.this demo does not have the same psu setup as passthepopcorn's unit had.I have multiple meters and will clock this gear very closely. the rooms temp is 30c or 86fthe rating of 1736 watts is for 20c or 68f

### Reply 5:
I was always able to use one 24 port switchBut the clifton build changed my world of mining.we are using 70 unitstwo 24 port switchesone 48 port switchthree routersmodem to one with 192.168.1.1 for all non-mining gear to two mining routersone with 192.168.0.1 for all sha gear uses 24 port and 48 port about 40 piecesone with 192.168.10.1 for the L3+ uses 24 port about 22 piecesthe setup above could do say 240 + 250 + 250 = 740 miners you would many many many switches I guess 30+ 24 port or 15 plus 48 port.but if we push avalon we could do 1000's of them with no extra <truncated> add the 87kwatts use 35-40 avalonthen if we do 400 more use 150 avalon not a single extra switch.

### Reply 6:
Even with these its getting harder.Blokforge has upped the price of the August batch to $2300, September sold out, so October is the earliest at reasonable prices.Canaan has some September left, but August all sold out.As I'm not shipping to the US I'd probably choose to get them from Canaan direct.

### Reply 7:
Okay the miner arrived but not the psu. Disappointed mostly seems to be fault of DHL gear was due thur.it is fri.2 boxesone for miner came todaybox with psu is floating aboutbuysolar is getting a set of 2 boxes like I am in his case neither box has arrivedhere is youtube video of opening of miner boxYour video will be live at: <link> you can see itfull size image<link>

### Reply 8:
It has arrived. Unlike the other review I have been given a stand alone psu with cables. What does this mean it means I had to take off the controller case to see the buss bars as they are not marked pos or neg.The psu did show pos and neg so I was able to correctly wire the gear. A relief for sure.It is not that loud it can be sound proofe<rest of thread truncated>
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16397,"Date: 2023-01
Topic: Is mining Profitable in 2022?
### Original post:
Hi guys I was reading news that for the first time Bitcoin mining has not been profitable for the big miners who run millions of dollars of machines and that sucks to them. Cause they have very big expenses. So I was saying that it means that this morning for low budget miners will be total loss and a lot of hard work.In my opinion that Ethereum mining is also not profitable.

### Reply 1:
there is no eth mining. It was ended in Sept 2022.What is a loser for a large miner with tons of overhead and loans does not affect a small scale commercial miner much.I turn a profit just way smaller than in 2021.We have no debt and the spaces we use have quite a bit of solar power.

### Reply 2:
I think the biggest expense for miners is electricity bills. If you have cheap electricity, then you will be successful miners. But in many European countries, contracts for the supply of electricity are terminated with miners. It is very important to find a place with cheap electricity and not be kicked out of there. And Ethereum forks are not profitable now.

### Reply 3:
It depends on one's electricity cost but yes profitability has dropped from the times when the Bitcoin price was moving towards the all-time high. This was bound to happen, as it has been every bear marketLooks like you have not be following. Ethereum mining is now history.

### Reply 4:
Of course, if we talk about miners tied to an outlet, we can talk about unprofitability in the current market, but it can also be considered as an investment, but large mining companies can be created on sites such as the electric power industry with excessive generation and be used, among other things, to compensate for reactive power and thereby, in addition to bitcoin mining, also provide stability as this energy node of the node and the system as a whole.

### Reply 5:
Do you sell mined BTC right away if you are talking about a profit slightly less than last year? All or part? Are you considering holding the mined bitcoin until the price goes up?I apologize if I'm asking tactless questions.Perhaps the unprofitability of production for large miners will affect the increase in the number of small ones, which will have a positive effect on decentralization.

### Reply 6:
It always come down to power cost. If you have cheap or even free electricity than it is worth it. If not then it is in many case not worth it. You can only for example use the heat to heat your house, if you energy is to expensive and then have a profit still, since you dont need to pay for heating.

### Reply 7:
For now, due to the Bitcoin price drop mining is not profitable but depends on what unit/model and your power cost.This is just the same as before someone said Bitcoin mining is dead but after the block halving miners who stay mining are making more profit than those people who just invested recently to buy miners.The best advantage for miners while the price of Bitcoin is low is you can buy units at a very low price. You can either hold the units to resell in the future because I'm sure these units after block halving will be more expensive or either start mining today if you have pretty cheap power and stay mining then hold and wait for block halving to resell and sell your Bitcoin to fill your pocket.

### Reply 8:
I don't sell every single coin after expenses.I don't hodl every single coin after expenses.Sometimes I hodl almost everything I can other times I sell almost everything I can.BTW it can be a hard decision as to the ratio of hodl vs selling the profits after the expenses.Since my power deal is good my hard choices are how fast to expand and how much to sink back into expansion of the mine.

### Reply 9:
Yes, electricity has become the hardest one for crypto mining, and that ETH went to PoS.Even so, I have started to see much new stuff for ex Chia, there you have some low-power raspberry that can make runt like very low power.We also have Kaspa, which has been proven to run the GPU cards on very low watts.And this is like virtual mining NFT:s that are coming.All in all, if you diversify on different types of mining you maybe could be okay

### Reply 10:
I think all of this should be discussed in the altcoin section since OP also specifically mentions Bitcoin mining. Regardless, the market will find equilibrium sooner or later so OP doesn't have to worry about it. I've seen a lot of doomposting about Bitcoin mining (and how it will impact its network) since months ago with or less the same question. OP might want to search about it if he is worried about Bitcoin.

### Reply 11:
yeah and btc is now up just a bit. Maybe we turn a corner soon. 22k would look good to a lot of miners.

### Reply 12:
If we are not talking about a few asics for the house and garage, which perhaps no one will know about, but about a container of 100 asics, then there is a problem with the electricity supplier.In Europe, miners are banned from<rest of thread truncated>
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11374,"Date: 2023-10
Topic: s19k pro dashboard minerlog
### Original post:
Is there a way to view share difficulty in real time on the minerlog? I would like to see the difficulty of shares as they are found! I know the old antminer software dashboard would show ""last share accepted difficulty"" as well as ""best share"" but the new antminer software dashboard doesnt show these

### Reply 1:
I don't know what this unit dashboard looks like but if it looks the same as other s19 model dashboards isn't the LSDIFF is what you looking for? it is on the dashboard under the pool.Or check other monitoring software like APtool or awesome miner it might give a view about share difficulty.

### Reply 2:
its just odd because pool dificulty is set at 106k and seems like all shares showing on LSDIFF are a value of like 106060. The old dashboard had a box that showed ""best share"" which I can't seem to find with the newer version of dashboard. I'm used to gpu mining where I have a montior showing all shares/jobs that are being worked on

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16551,"Date: 2023-07
Topic: CoolTank Project: Let's Revolutionize Small-Scale Mining Together
### Original post:
Hey everyone,I wanted to share something I've been working on that I think could be really interesting to this community. It's called the CoolTank Project, and it's all about making crypto mining more efficient and accessible, especially for small-scale miners.The project started back in 2019 in Dubai, where we were trying to solve overheating problems in air-cooled mining farms. After a lot of research, we decided to use 2-phase immersion cooling technology. Read Our Story. <link> developed the CoolTank 75KW and a smaller CoolTank 10KW, designed for home use and exhibitions. These aren't just efficient; they're designed to boost mining profits, extend the lifespan of your miners, and work well even in extreme conditions. Learn More <link> we held a crowdfunding event to help fund the development of these products. I'm excited to say that the CoolTank 10KW was fully funded by a single contributor! This means we're now in the development and construction phase. <link> love to share updates about the project here, if that's okay with the moderators. I think it could be a great way to keep everyone in the loop and get your feedback and ideas. After all, this project is about developin<rest of post truncated>

### Reply 1:
looks like an interesting project, alltought a lot of important details are missing, such as your target selling price, estimation of total cost, and all that, but my question is; since you are targeting small miners, why use two-phase immersion cooling? while two-phase immersion cooling is more efficient than single-phase immersion cooling, it's rather more complex and a lot more expensive.I understand that maintenance and components could be less in the two-phase setup, but the initial cost and availability does not favour it, would like to hear from you.

### Reply 2:
Dear Mikeywith,Thank you for your interest in our upcoming project, CoolTank 10KW. Your question is indeed a vital one, and I appreciate your insights regarding the complexity and cost associated with two-phase immersion cooling.1) I would like to share that I have extensive experience as a consultant for building single-phase immersion cooling mining farms in the United Arab Emirates. This rich background has endowed me with deep understanding of the nuances and complexities involved in this space.2) Based on my accumulated knowledge and hands-on experience, I can affirmatively state that while single-phase immersion cooling tends to deliver lower CAPEX, it usually implies a higher OPEX. In other words, while the initial cost might be lower, the running expenses over the long term can be significantly higher.Here is some more details about CoolTank 75 KW - Fact Sheet & Price <link> for the other details you've asked for:3) I would like to assure you that as we make progress with the CoolTank 10KW product development, we will be sharing further information, including the intended sale price. It is our commitment to maintain transparency and open communication with our potential cli<rest of post truncated>

### Reply 3:
This is a serious claim, to say the least, as far as I understand the main pro of two-phase vs single-phase would be a slightly better PUE, I am not sure how two-phase system would have a lower OPEX by saving a few tens of dollars in pumps.With two-phase you are still going to need to add new components that are not needed in a single phase, and the main issue with be the use of Fluorocarbon-based liquids, which are EXTREMELY expensive compared to the hydrocarbon-based liquid used in a single phase.Here is a study showing that the loss of the liquid was pretty high to the point that having that better PUE was questioned.Now, personally speaking, the cost of the two-phase 75KW is $37,000. if we compare that to one of the single-phase setups, the total cost would be a lot less than 50%, I find it very difficult to justify such an investment, mining a short to medium-term business, if OPEX will only start to look better after 50 years then it's a no-go.Thanks for answering my questions.

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11360,"Date: 2023-10
Topic: ASICRUN AR1 is a scam
### Original post:
No machine mines BTC and doge it is a scam. Also if I built and owned these I would just mine and get rich I would not sell them.They claim 1000 th and 650 watts for btc which is 0.65 watts a th which is 25x better than anyone else.they also say 400gh for ltc/doge at 650 watts which is so much better than the best L7 it is impossible.

### Reply 1:
Also when a newbie with 1 post asks that question it is basically 99% shot it is a scam.So a piece of gear that has the hash power of 10 s19 j pros and burns 650 watts vs 30000 wattsand it also has the hash power of 44 L7's and burns 650 watts versus 132,000 watts.and it is cheap price. = Scam!!

### Reply 2:
I was nice I did not tag you with a distrust as a possible scammer.

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24126,"Date: 2023-05
Topic: S9 - Fully functional yet no hash-rate
### Original post:
Hey guys, pretty much as the titlee says, i have switched from Vnish, now to stock with no signs of hashing. <link> are my logs from stock firmware.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [<rest of post truncated>

### Reply 1:
Yeah absolutely, OP could you try with solo.ckpool and tell us if the problem persists?From the image you shared, the 3 hashboards are well detected, all your chips look ok (only o's and no x's under ASIC status), both of fans are running.It seems that you have a problem with your pool.

### Reply 2:
Based in your image it looks fine have you tried to mine on other pool to test?It seems you are using miningrig rentals I would like you to try to mine on Viabtc pool to test or <link> see if it would mine then update here.

### Reply 3:
Your Stratum URL looks pretty strange, not even sure how it shows alive, nowhere in miningrigrentals where it mentions anything about that 3311 port you are using, either way, it could be any thing that causes this issue, but it would be a waste of time to try and blame anything before checking a different pool, and please tell me, why on earth would you use the same exact URL and worker on ALL three pools? this is wrong in every way even if your miner was hashing at full speed, do NOT use the same pool on all 3 fields.

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23346,"Date: 2020-10
Topic: S17+ (70TH) Hashchain missing (but not always)
### Original post:
Firstly, yes, that is usual thing for 17th series of Antminers, and you have a sign of dying hashboard. Lose heatsink is most probable cause and there is not much if anything that you can do.You can try putting it on one of the sides and gravity might help you. But since it is occasionally working fine, I'd recommend you to turn it on and when you see it having three boards up, do not turn it off EVER again. And pray to electricity gods that you won't have blackouts or brownouts.Secondly, I am not sure why are you turning it off every night nor why are you ""letting it cool down"". There is not much benefit to second thing you are doing and first thing is obvious, you lose up to or more than 12h per day of your earnings. That way, you will never get ROI on it, let alone earn anything after it, especially if you do not have free <truncated> I'd like to give you few more advice.1. When hashboard drops, do not change anything in config, just hit apply or use reboot button on web interface to restart it. It will be faster than full reboot and it will save you some time.2. If you are up to it, you can try custom firmwares (they MIGHT help you if you underclock it and in some cases overvol<rest of post truncated>

### Reply 1:
Thank you for recommendations. Before I run out of my 180 Day warranty I will send in the faulty hashboard.I read that a different board my not work with my S17+ as it has a different ""board-code"" But sometimes it will work. I will give it a try and report back when I receive the ""new"" board.

### Reply 2:
I have a brand new S17+ (70TH). From time to time Hashchain 0 is missing.I found the following entry within my <truncated> 11:15:27 <truncated> Chain 0 only find 0 asic, will power off hash board 0I have heard that this may be a common problem on the S17 series. What I don't understand though, is that this problem seems to come and go randomly.When I turn off the miner and turn it on the next day it can occur. It can remain like this for a couple of days. Then without any clear indication why, all three Hashchains are found and working again. (Without any problems).The problem either appears or disappears only when I turn off the miner and turn it on the next day. Once it's running (with 2 or 3 boards), it stays like that.I turn the miner off every night (going to sleep mode first, too cool down). The past 6 days the miner was started every morning without any problems. Today the problem occured again. A number of reboots, power disconnects did not solve the problem (like the last times).All temperatures are within a normal operating range.Things I have tried:different power cables & outletsswitching data cables (results in other hashboard number not being found, depending on how i<rest of post truncated>

### Reply 3:
So if your diagnosis is right, it seems there is a serious hardware error. I was hoping there wasn't (like some loose cable on the PSU or something). In that case I suppose sending it in for repair and hoping for the best is the smartest move?Putting it on the side actually did work for me before. I read about this somewhere in this forum. Tried it again today, this time without success.The nature of my project does not allow for constant electricity supply. I do have free electricity from time to time, but at other times its rather expensive. The miner is supposed to be installed inside the tower of a windmill.Thats why I am coding a control software that will tell my miner what to do, based on the current price of electricity (if selling the energy is more profitable I won't mine). By my calculations it will be able to run profitable about 70% of the time though, which should result in profit long term.Regarding your tips:1. time saving is not important right now. This is a research project and I need a functioning S17+ to do proper research. Profitability is not relevant (yet).2. I am running BraiinsOS on all our S9s (12 in total). It has not released yet for S17+ (but will be t<rest of post truncated>

### Reply 4:
since it is not about profit you could send it in. or check on thierry4wd to use his firmware for it.see belowI have the same issue with my 63th t17+. middle board drops out.I now run it with stock freq but 17.65 volts vs 18.28 that stock firmware uses.yeah. it gets around 62th not 63th but the 3 boards work.

### Reply 5:
It is a serious problem, and as I said, there is not much you can do to fix it unless you are well versed in repairing them.Bitmain will never take only one hashboard for repair, you will have to send a whole unit (might be expensive due to shipping across half the world - assuming you are from USA). Also, if you decide to go through with only sending one hashboard to your reseller, be careful not to send that unit at a later time to Bitmain as I think they will count it as voided warranty if all three hashboards are not from same miner.It matters on which <rest of thread truncated>
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    ""hardware_name"": ""hashboard"",
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    ""hardware_name"": ""PSU"",
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  },
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    ""hardware_name"": ""S9"",
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    ""hardware_name"": ""63th t17+"",
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13652,"Date: 2020-06
Topic:  Dollemizer Firmware ASICBOOST Comming! [custom s9, s9i, t9 Firmware upgrade]
### Original post:
What would really be nice is if you can set it the other way around: Set a max chip temp and throttle the miner up to that temp. Sun is shining? less TH. Mother-in-law visiting? 25Th!

### Reply 1:
?? you checked it like that or it is your wish?

### Reply 2:
wish.A few hours a day in summer i just cant control the temp enough yet to alway be on the safe side. Would be nice if you can set that temperature so they throttle back a bit. At evening and night when temps are lower, they can hash higher.

### Reply 3:
Hi Dollemizer the developer fee is ""1.9%"" or ""9%""and the FW can support T9+ or not ?

### Reply 4:
Dear Piscess16,the Miner will mine in the first 4 Minutes for our fee. Then it will mine for 200 Minutes on your pools and will continue from there.This is equivalent of ~ 1.96 % of the Mining time. (4/204)For the T9+, we haven't done testing on a T9+, the T9 is very efficient and might be comparable.Thank you for your <truncated>

### Reply 5:
Do you support the R4?

### Reply 6:
We are right now working on that. The T9+ has a different PIC and requires a different bmminer. We will publish the tested version as soon as it is stable on our side for more than 24 hours.DolleTeam

### Reply 7:
so total is 1 day around 28 min, total fee is around 2% right ?Hi i have testing update the T9+ FW, but have the error cant to running, so your team can support the T9+ on future?Code:Miner Type = T9+AsicType = 1387real AsicNum = 18use critical mode to search freq...get PLUG ON=0x07003f0eFind hashboard on Chain[1]Find hashboard on Chain[2]Find hashboard on Chain[3]Find hashboard on Chain[8]Find hashboard on Chain[9]Find hashboard on Chain[10]Find hashboard on Chain[11]Find hashboard on Chain[12]Find hashboard on <truncated> = 0x0000ffffchain[1] PIC jump to <truncated> failed on <truncated> failed on <truncated> failed on Chain[1]!Check chain[1] PIC fw <truncated> PIC need restore ...

### Reply 8:
This software is tested on T9 and S9. We dont have a version for R4 yet.Kind Regards,DolleTeam

### Reply 9:
what does lite and basic different ? fees, setting interface, etc ?

### Reply 10:
The difference between lite and basic version are the settings, Basic will provide you with more functionality than the Lite version.The Dolleteam.

### Reply 11:
So the T9+ also can overclock ? and the testing the overclock is until how many hashrate ?

### Reply 12:
Yes, the T9 will also work with this firmware, and hash rates are similar to the S9! So the upgrade for the T9 will be bigger than the S9!The Dolleteam.

### Reply 13:
Sorry, i mean is T9 Plus 10.5t~

### Reply 14:
How to you revert back to stock.I have reinstalled the bitmain firmware but the index page has still got the dollemizer logo on it.Please Advise

### Reply 15:
Can you paperclip it for 10 sec? This should set it back to it's original settings.

### Reply 16:
On S9 temp on chip is not working (

### Reply 17:
Thanks for that information.We will have a look into that.

### Reply 18:
Hi W15ER69,this can happen due to an update of the pic program of your miner. Please contact us directly through our slack channel, so we can elaborate that issue further.Kind Regards,DolleTeam

### Reply 19:
I tried this also but the dollemizer home screen on the miner was still there

### Reply 20:
Just clear your cache. F5 helps most of the time.

### Reply 21:
It would be important to know the reason for your switch back to stock clockings. If you could provide us with a short insight on why you choose the stock firmware over our product we would really appreciate that.Kind Regards,DolleTeam

### Reply 22:
AriesIV10,thanks for helping out here.Kind Regards,DolleTeam

### Reply 23:
Thanks for pointing that out,however, under that post you will find the comments, that:So this seems not like a very transparent software to us.We tried it for a short period and had issues.DolleTeam

### Reply 24:
I tried this on an Antminer T9+ and it is not hashing.I am getting this error ""Logic <truncated> have flashed back to factory firmware and reset to defaults and still no luck.Also restored from a backup and still nothing.

### Reply 25:
Dear Dolleteam,Callcu fee:- 13.5T, up date firm to 14T. But fee = 0.266T, so Net hash = 14T - 0.266T = 13.734T- 14T, up date to 1.5T. Fee = 0.275T, Net hash = 14.22T.Could you set fee about 1%, i think it is good.Best regards,John

### Reply 26:
When will the ASICBOOST version be available? We have A LOT of S9's to run your firmware.

### Reply 27:
Same here, but my T9+ is hashing at 3,5 TH/s.Has anyone found a solution?

### Reply 28:
Sounds like his firmware cooked you t9+

### Reply 29:
Hi,I installed Dollemizer in a T9+. Unfurtenately, it did not work my hashrate is zero. I tried to uninstalled an reinstall Bitmains firmware, but the hashrate is still zero, it is not possible to uninstall the software. What can I do the Antminer is new, and <rest of thread truncated>
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  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""R4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer T9+"",
    ""hardware_is_owned"": true
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]"
4004,"Date: 2019-05
Topic: [OPEN] Group Buy #11 220+ ASICMiner Erupter USB (YOU WANTED NEW PRICE?)
### Original post:
No they let bitinstant test the instant market.Nah I don't watch charts. I just saw it falling and needed more, bought quickly. I only got 10 though.There was a platform, a while ago from a chinese kid. It was awesome but it got hacked and closed. It was true trading, not slow exchanging.

### Reply 1:
I don't see how you can't make money raking a fee on every transaction for minimal service work.You think they sit on coins and that's how they make their money?I'm not following your logic.

### Reply 2:
They have to get the coins somewhere. And you pay a week before. So do they buy it when you buy it or a week later? There were complaints people's orders were cancelled when they bought too low.

### Reply 3:
I have never used Coinbase for buying BTC. What kind of upcharge do they have?

### Reply 4:
canary, 4 for me --PM sent.daddyhutch; 4; 4.018; <truncated> YPayment sent!<link>

### Reply 5:
good prices if they sell the coins to you. my order was canceled 1 hour before they were to pay it. which means my 286 usd was frozen for 8 days. 4 of which were in the hands of coin base. funny thing is they saved me money my price was just before the big drop. I was locked in for 92 usd a coin. the coins were to be monday the 8th of july. they were ordered june 29th. it was my first purchase ever, but i had used them for sale of coins more then 12 times. I was pissed they canceled but I used bit instant and got the coins at a better price. I do not understand why they would cancel a sale at 92 btc a coin when the current price was 77 or 78 a coin. I asked and was told i was high risk sale . So I was polite and put in a new order which should be this monday. the money for the coins is at 80 not 92 so to me they do not make a lot of sense.

### Reply 6:
west17m; 12; 11.5338824; <truncated> Ythanks

### Reply 7:
Thanks for the review. That's helpful. But what do they charge per coin that you purchase? A precentage, a flat rate??

### Reply 8:
Thanks. Fees are quite low if they are moving to immediate funding.

### Reply 9:
""Absolute e-warior bullshit. Nobody in the real world strongly cares about that unless we're talking about <truncated> work. Focusing on such nonsense is why people remain with narrow-minded. Miss me with your virtue signalling bullshit. It is a acceptable mistake especially when it is done once or even very very rarely.""93.74 usd at 12:50 am eastern standard time is the base1% fee is 94 cents 15 cent bank fee flat does not change.so 1% plus 15 cents over the base. the base is close to mtgox. right now 94.51 coinbase vs 95.01 mtgox

","[
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23238,"Date: 2020-04
Topic: Complete Newbie
### Original post:
Hi GuysHere we go. I am jumping in with 2 feet here, I have only ever made 1 crypto transaction in my life though coinbase that turned into 2 transactions.Anyhow I hope that will give you an Idea of my Knowledge on crypto which is zero.MiningI don't know what came over me but decided to buy 3 mining machines. Its done and they are on their way.I do know about power costs and profitability so know I am up against it. I am also aware of the halving coming UPThere will be a total of about 60 odd Th/s If the machines decide to work. It has cost me roughly $700 so far.I need to know about wiring and how you would set up these machines on a circuit. So looking to know what way you would go about a standard 12kw 240 volt domestic connection. Each machine is about 2200 watts. I am looking to know would you give each machine its own dedicated Socket and breaker ? Or would it suffice on one loop of 3 sockets on say a 40 amp breaker ?I know you are probably scratching your heads thinking why now on cheap gear but I would like to learn.Also Pools and address I have no idea where to start.Any help would be greatThanks

### Reply 1:
I haven't heard of domestic units going as high as 12kw. If you have access to them and an appropriate fuse/cbbr and it doesn't become too hot...Not sure why people have left this for so long to reply although I'm also not sure if there are retail psus capable of handling 6600W.... And unless a splitter is licensed for the full 12000 if suggest caution before trying to use it.

### Reply 2:
jackgThanks for answer. I am doing this to learn about mining in general. I am not familiar with the general abbreviations for mining.I am just looking to know how to run these 3 machines safely in a domestic house ""shed"" out the back. I am wondering what way I would set up the power to the shed without being dangerous.Thanks

### Reply 3:
If you are a newbie and you want to learn about mining much better read the sticky thread on this section. Which I think will help you to start your journey on mining.Here look at these threads below just added some useful threads to learn.- First time/Small miner reference for getting started.- Current List of Competitive Hardware - January 2020- Why all miners need to mine on a pool that pays them the tx fees.

### Reply 4:
so the machines do 20th each and use 2200 watts each correct?I will pretend you have free power since they suck at power savings.It would really help to know what you purchasedDo they have a built in power supply?etc.you will be needing a 50 amp sub panel with 3 20 amp breakers. or a 50 amp sub panel with 2 30 amp breakers.you managed the get a very bad power usage at 2200 watts.and 3 pieces . I could go into details but 6600/.8 = 8250 watts is the minimum rated you should plan to dothat would be 3x 20 amp or 2x 30amp if I were you I would feed a 4 gauge cable from the house breaker to a 4 breaker box with 3x 20 amp circuits leave a circuit open.the main panel would have to have space for a 60amp breaker that feeds to the sub panel in the shed.I have no formal training so don't trust me.Please find a good electrician that knows your codes show him what I wrote and ask him if it will work.good luck as I take zero responsilbity if you don't do it correctly.

### Reply 5:
What I bought x 3: <link> profit is not important at the moment. I decided on these because they are cheap and I can learn about asic mining from them.Thanks for your reply ref power. I know its only advice and not certain.

### Reply 6:
It's not actually cheap the price of this times 4 of Antminer S9 SE 16th/s so you can get more hashrate on SE miner (64Th/s in total) compared to love core a1 with 24th/s only.Honestly, this kind of miner doesn't have its own support it is imitated version of Cheetah a1 miner and Aisen A1 25T.

### Reply 7:
Thats quite a bit of power. I had a dedicated 30 amp 220v installed for my 3 - S15s. Running on low power they total approx 2,700 watts (13amps) and on high power they total approx 4,800 watts (21amps)Using the 80% rule thats all I would put on that circuit.Agree with Phil. Get an electrician involved. Thats not something I would personally do myself.

### Reply 8:
Hi MikeyWithThanks for your input. Fairly similar power setup if I upgrade main breaker. I would be looking at a similar setup as your shed but only 3 miners in mine be it they take 6600 together. I am based in Europe. What I compare these to when looking at power is electric showers. any decent 1 here uses 10.5kw and allowed a max on 2 on my system at any one time. They have to have a dedicated breaker each.Cheers

### Reply 9:
Hi BiffaYes exactly that. Not an investment its a learning curve. Who knows, I might enjoy doing it and decided to invest in proper efficient miners in the future.For now with these it is a lesson. Whatever I learn may benefit me and at least give me some knowledge of crypto coins.

### Reply 10:
Keep in min<rest of thread truncated>
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    ""hardware_name"": ""domestic units"",
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  },
  {
    ""hardware_name"": ""retail psus"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""splitter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S9 SE 16th/s"",
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  },
  {
    ""hardware_name"": ""love core a1"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cheetah a1 miner"",
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  },
  {
    ""hardware_name"": ""Aisen A1 25T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""3 - S15s"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""electric showers"",
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  }
]"
16438,"Date: 2023-03
Topic: How to view Stratum Data for an ASIC
### Original post:
I want to view the stratum data between mining pool and my ASIC - how to do this?Basic but hard to find info on thisOnly relevant info I've found thus far:<link> post #102However, this only works for cgminer??? No need for cgminer when running an asic pointed at a poolI would like to view stratum data between my ASIC (S9) and mining pool. The previous answer mentions wireshark....would this be my option? What particulars do i need to setup this connection to monitor stratum data?All help appreciated

### Reply 1:
You should have a look on this topic : <link> am not sure that is what you were looking for, but this is a good example on how you can verify the job done by your Antminer Have a good day !

### Reply 2:
If you want to see the entire conversation across the network: <link> this you can see all the packets that come and go and from things on your network.Wireshark also will reassemble the 'conversation' that happens.Obviously, you need to know what you are looking for when reading what is being send to / from your miner but that should get you all the data, you can then decode it.-Dave

### Reply 3:
A lot of miners have cgminer (or an illegal fork of it) in them.Alas you can't always get at cgminer and change how it runs.As DaveF mentioned above, you can watch the whole conversation between the miner and the pool.Alas one exception, you can't see what braiins is doing ... ...

### Reply 4:
<truncated> Thanks for the info on that post, looks interesting and verifying payout address is very helpful. DaveF: Sounds like wireshark could be very helpful, however I am not clear on what I would be seeing with the stratum data, would you have any links or anything that would show some examples of how to disseminate this info? I will try it out soon, but without giving it a try at the moment FAFO method I'm just trying to collect some more insight from everyone on how to do this.kano: Interesting, if I think what your saying is correct the ASIC has cgminer or something similar already running onboard.....i am not using braiins. Lol. Is there a way I can tap into the onboard cgminer program to view stratum data?And again, I am just trying to find out how to view the stratum data. Next I need to figure out what I'm looking at. So any help with examples that can demonstrate the breakdown of the comms would be very helpful.Thanks again everyone

### Reply 5:
Not much to really show, it's just going to be the conversation between your miner and the pool.Pool -> here is what I want you to work on.Miner -> this is what I got so far.The stratum protocol is well documented: <link> along with what <truncated> posted should give you a more or less complete view of what is happening.There is really not much too it the fact that although what is going on in the miner is somewhat sophisticated the actual conversation between the miner and pool only has basic information.-Dave

### Reply 6:
Yes that's one the reasons for v2: encrypted communications so precisely, the kind of things you can do with wireshark with v1 which is clear text, cannot be done by your neighbor, your isp, your government, etc with v2.Same reason web pages are now <link> instead of <link> Sure, clear text is great for debugging, in your own lan. Perhaps adequate for a time where you were expected to mine against your own node, But alas, the times have changed.Of course, if you do use bosminer with v1, you can still see it in clear text. Or if you make your own v2 proxy...

### Reply 7:
You could also use SSL/TLS if you want to have encrypted communication and be certain you are talking to the server you think you are.

### Reply 8:
Yes, and you can also do a whitelist so those encrypted connections go where they are supposed to.

### Reply 9:
Nah, I've just written a router that supports TLS, so your entire network is clear text, and all data out from your network is encrypted.I do wonder why someone would promote miners doing <truncated> on crappy performance hardwareand sending everything as unknown hidden data out to the internet ...Oh right, coz he makes more money if people do what he wants Money changes everything - Cindy Lauper

### Reply 10:
Well, it turns out the ARM cpus in those control boards are capable enough, except maybe the beagle bone; that one is single core and struggles a bit more for certain tasks but its not an issue with the encryption. The others are dual core and even quad core with the amlogic.Sure, you can also place a v1 to v2 proxy in your network perimeter, so your v1 miners are clear text only in the lan and then go to the pool using v2 Stratum V2 is an open spec, any pool operator can implement it (the lazier ones by putting a v2 to v1 proxy in front), and there is an open independent implementation. You can tell exactly what is going on by yourself from your own mining software talking to your own mining pool.Bitcoin Magazine: Why Bitcoin Mini<rest of thread truncated>
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  },
  {
    ""hardware_name"": ""Antminer"",
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  },
  {
    ""hardware_name"": ""ARM cpus"",
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    ""hardware_name"": ""beagle bone"",
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24083,"Date: 2023-02
Topic: Cover on  FANS on HOTZone , Out FAN S19jPRO
### Original post:
Hi everyone, I have a Whole Rack with 16 s19Jpro divided in 4 rows of 4 each. The problem is sometimes, The power company cuts only 1 of the 3 Phases, so two of the rows stay of, and in consecuent hot air start to enter the cold zone through the Offline ASICs of the OFF ROw, so, all temp in ON asics start to increase, and is a problem. I decided tu put manually a sheet of plastic glass on hotzone, on the rear of the Offline ASICS, so when power will come back, the power of the fans themselves will put the sheet out and everything ok again. I made this temporal, anyone has another thing taht solve this Issue. Thanks a lot.

### Reply 1:
What exactly does your room look like and what places of your units?Do you have any images to show the room and position of the whole rack?We can't suggest if we don't know exactly what they look like.Why not swap the power from your 2 first and 2nd rows to the 3rd and 4th rows since you said the company sometimes cuts the power? That's what I think would be the best option depending on their position or having an extra exhaust might work to bring the hot air out.

### Reply 2:
Adding to what BitMaxz said the can room layout accommodate some other fans to keep the air moving in the direction you want? Can you get an exhaust fan on the hot zone side that spins up when the power drops on one of the phases so you can force the air out of the room?How long is the power out for? And you might want to play a bit with the setup. There might be a layout of the 4 x 4 that you have that even when you loose a phase the other running miners on either side are forcing enough air in the proper direction that it can't come back. -Dave

### Reply 3:
I think I can answer your question, in a 3-phase system, there is a limited amount of amps on which you can draw on each phase, you can't just move the load from L1 to L2 and expect everything to work unless the wirings are oversized, and by oversized, I mean doubled, it's also pretty damn stupid for the power company to cut just one phase at a time, it puts extreme pressure on their transformers, every transformer I saw is protected by a phase failure relay which will shut down the low end of the transformer when one of the phases is absent.With that said you have two options:1- Split the cold/hot side of the miner using a split room design, so you have a cold aisle and a hot one, you can use sheet metal, MDF or foam board, this will prevent hot air from entering the cold side as it will have to pass through the heatsinks of the ""OFF miners"".2-Create a negative pressure zone on the exhaust side by adding an exhaust fan attached to the wall which faces the miners' exhaust fans, air moves from positive to negative, so even 2 rows off, the air will still go from the cold side to the hot side.

### Reply 4:
Thanks a lot for your replies, I will add a diagram and photos of my setup to see my case. Thanks again

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    ""hardware_name"": ""s19Jpro"",
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    ""hardware_name"": ""sheet of plastic glass"",
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    ""hardware_name"": ""exhaust fan"",
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22971,"Date: 2019-06
Topic: Antminer s9 error ""Cannot Find Signature!!!""
### Original post:
How to solve this problem?I'm getting this problem while upgrading with old firmware in Browser do you know how to fix this?I have missing hashboard after I flash my s9 with latest version.

### Reply 1:
If you flash the miner with the latest firmware and you trying to downgrade them back it won't work because 2019 firmware has new security they also disable your SSH access with this firmware. Old version lower than 2019 firmware(2018 to 2017 firmware) doesn't have a signature that is why you are getting this ""Cannot Find Signature""Anyway, if you are planning to downgrade your s9 you can follow this S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program RecoveryAfter that, you can flash it again with lower or older s9 firmware version.

### Reply 2:
Thanks it works.

### Reply 3:
Moral of the story: S9 owners DO NOT upgrade firmware to 2019 version, you will lose SSH access!!!I wrote that for a reason. Still, you could use an SD card to flash it back using that convoluted T9 firmware method, or simply boot Braiins OS and install that instead.I don't think S9s should be running any other firmware at this point, unless you have the ancient controller.With Braiins OS you can improve the efficiency from 100w per tera hash down to around 80w. This alone increased the lifetime of the units against Bitmain's wishes, which is why they responded by locking down ssh access since 2019.

","[
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    ""hardware_name"": ""Antminer s9"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""S9 series (S9, S9i, S9j, S9 Hydro) Control Board"",
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    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Braiins OS"",
    ""hardware_is_owned"": false
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]"
23110,"Date: 2019-10
Topic: Hash Board Not working
### Original post:
Hi guysi have big problem with my s9 after working in 30 minutes one or two hash board nor working i flushed frimware with sd card serveral time and updated frimware but not fixedplease some body help me

### Reply 1:
Unplug all 3 boards, test each board individually, swap data and power cables, do this for each of the 3 boards.Don't connect all three, do this test first, its important. It takes time, you should wait at least half an hour to make sure its hashing fine (per board).

","[
  {
    ""hardware_name"": ""s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""sd card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""data and power cables"",
    ""hardware_is_owned"": false
  }
]"
23256,"Date: 2020-04
Topic: How to get information from antminer s9
### Original post:
HelloI have a small mining operation with currently 10 Antminer S9'sI'm thinking about setting a screen in the room they are in to monitor them.and also set it up with remote access so i can monitor them from wherever i am.Im thinking about using a program similar to AwesomeMiner so I can monitor their temperature and the Th/s they are currently working with.I realize that you cant SSH into Antminer S9 but is there a way I can just GET this information to display it in a single screen program, Like how AwesomeMiner does.I have made the program with C# myself and it just needs a way to get said information.Also the reason i dont just use awesome miner because the free version only allows for 2 miners at a time. and i dont really need all the features, just the temp and TH/s monitor.Thank YouEDIT : I can also work with Linux if i need to so if there is a way to do this on linux i would appreciate it too.

### Reply 1:
that would require me to refresh the pages.a program that gets the data and refreshet it constantly would be better.

### Reply 2:
There is no software out there that does it by default that I know of.But there are some chrome plugins / addons that will auto refresh pages for you.There are also a few for FireFox. You would have to play with them a bit to see if one works for you.The other option would be to write a script that logs into the miners gets the page you want pulls the data and displays it.Seems like a lot more work then just having a bunch of browser tabs open.-Dave

### Reply 3:
you could do team viewer and have the 10 in the browserI have 3 accounts with viabtc.comThere are around 100 miners working remotely.Here are 5 of the in a browser. I check all of them on viabtc.com if I see an issue I use teamviewer and deal with the problem miner.

### Reply 4:
I manage 100 miners this way.I go to viabtc.com I have three accounts.I can check my ltc and btc miners on each account in under 2 minutes. Their software recycles stats every 10 minutes.If there is a problemI go to team viewer I have full access to the miner I try to do a remote fix.If no go. The warehouse the miners are in is open 12 hours a day 7 days a week I contact the worker and tell him to do a hard power off and power on.If no go. I mark the miner as dead wait for a few to turn off and drive the 140 mile round trip to do a hard repair.I have3 s9's dead out of 2000th that is about 40th1 l3+ dead out of 12gh that is about 0.5ghI will leave them be due to corona-v lockdown.I do go to warehouse every 90 days to teardown and dust out the gear.here is my smallest account.2 pieces of gear are running I know that is all I have with that accountSo no need to do anything on team viewer for that account.

### Reply 5:
Well, Awesomeminer doesn't use SSH to get access to the miner's information, but since you saidYou can simply unlock SSH access either by downgrading to an old bitmain firmware or even better use BraiinOS and you will get complete access to SSH and use your Linux skills.Since you can code, why not use Excel Import function, it basically scrape/import the miner's status page automatically something like thisYou can even select which parts you want to import, in your case, temp and hashrate, and the cool thing about it is that it automatically scrapes the data for you, the minimum refresh time is 1 minute, which is good enough.You do that by opening an excel sheet, hit Data > From WebForm there all you need to do is give it the password and username for your miner, select what you want to import, adjust the refresh time and save it, you can have a different sheet for every miner, after having your data up-to-date in an excel sheet it's a matter of simple code in C# using OleDbConnection and query the information you need to your program, then maybe set some functions to check temps and hashrate and then using <truncated> class you can code it to send you emails saying miner x's hashr<rest of post truncated>

### Reply 6:
Strange answers, are you people really unaware of the cgminer like API stats? Anyway you could use something like this: rig-stats.If you switch the firmware of your miners to Braiins OS, you can make them join a VPN. Teamviewer is an aberration that should never be touched, and a serious security risk. If you have Linux experience, you'll be at home with OpenWrt rather than some obscure unmaintaned Chinese distro.Awesomeminer does no magic, it polls the API like everyone else. With ssh access, you can let it do some more things like restarting.

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22849,"Date: 2019-01
Topic: T9+'s Chain/Card Problem
### Original post:
Hi, I can answer dessuit with certainty that the problem does not come from the pic, so my tutor will serivra strictly nothing unfortunately ...I just think the hashboard is defective, I have the same problem, with also, it does not support that I used 600mhz maximum, beyond, it's the same problem ...

### Reply 1:
unfornated totaly true ....

### Reply 2:
Hey! I have a T9+ and I've mining for around of 4 or 5 month with 10.5 th/s and now i'm mining with 9 th/s. The Chain/card number 12 went to 0, I Reboot it a couple time and It's get back to 10.5 th but after 30 minutes It's gets back to 9th/s again. I really don't know what to do. I need help..<link> when I try to update the firmware this error appears <link>

### Reply 3:
there are a few possible causes. will list them from most likely to least likely1- the board is dead ( could be fixable but chances are slim)solutions :this could be a hex related issue, can be fixed using this great guide > <link> a falling PSUsolution : try a different PSUregarding the error message you get upon flashing the firmware, looks like the firmware is bad, try using a different one, also make sure you using the T9+ and not just T9 firmware, also a hard reset could solve your issue.* posting the kernel log will help troubleshoot your problem

### Reply 4:
too bad, well on my shitty D3s sometimes increasing the volume and/or lowering the frequency helps, but usually when a board starts to act funny this way, it's only a matter of sometime before you lose hope and send it to the garage to sit next side the other wasted bad boards.

### Reply 5:
If it is a PSU issue, could it be diagnosed by disconnecting the other boards, or perhaps just switching the power cables?

### Reply 6:
yes this will do.

### Reply 7:
Well I tried with a different psu and the same, 9.5th and with the update of the firmware, I downloaded the firmware from the antminer's website

### Reply 8:
sadly, this is now very likely a failing hashboard, and there is nothing you can do about it unless if you it's still under warranty, then open a support ticked on bitmain's website.

### Reply 9:
It seems a hardware issue and maybe some capacitor or resistor is missing from the hashboard. Try to compare the other hashboard and find the missing capacitor and resistor.Have you tried the microSD card flashing? or they called it program recovery?If not try this one and maybe solves your issue. Follow the guide from here T9+ Control Board Program RecoveryWhy not, try the overclocking method from here <link> to increase the hashrate but expect for power consumption to be increased.

### Reply 10:
I have an original power supplu APw3++ from bitmain, does not affect any hardware or psu in addition to more power consumption? that is to say, the psu will support that capacity?here the kernel log <link>

### Reply 11:
are you on 110-120 volt or 220-220 volt? for APw3++ on the former the output would be about 1200w so it's a NO , on the second the output would be 1600w so it's a yes.so if you plugging it into a 110-120 v, don't even try it. unless you going to underlclcok your miner.

### Reply 12:
This is a well-known issue for t9+ miner here in the forum and I don't see any issue on kernel logs except for err_nonce.There is a thread here that same issue as yours and according to OP he solves his issue by changing the house wiring. Take a look at this post here Antminer T9+ Low Hashrate on chains

### Reply 13:
Ok at the end I could update the t9 + with the Sdcard method but now this appears<link> the kernel log again <link>

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16557,"Date: 2023-07
Topic: Biden proposed 30% mining tax. what would impact on Bitcoin mining?
### Original post:
President Joe Biden's administration has imposed a 30% tax on bitcoin mining electricity use. Bitcoin mining was not very profitable even though this tax was not levied in the past. But what impact will the new electricity cost have on Bitcoin mining?Will this additional electricity tax attract new miners to Bitcoin mining?What will be the impact on hashpower for a 30% mining tax?Even before the imposition of this tax, some mining companies were in losses.What are the old mining companies thinking about this tax?

### Reply 1:
Bitcoin mining profitability is mostly seasonal with several factors determining the profitability such as Bitcoin Price, hash rate and the changes in Bitcoin transaction fees.Will the 30% tax on Bitcoin mining work outside the US? Absolutely nothing, mining is not done only in the US. Also, not everyone in the US will stop mining because of the 30% mining taxIf you were a miner, what would you think about the tax?

### Reply 2:
In my humble opinion, this will lead to the concentration of miners in the large entities (eventually exposed to the government) that can afford having their own power plants (talking about the U.S. of course).

### Reply 3:
Well Trump taxed China imports at 30% I have paid thousand in import duties . It slowed my mines growth.I would need to read the tax bill proposed to under stand if it will hurt my mine as much or more than the import tax.

### Reply 4:
That's a very high tax rate. Companies will move to another country instead of paying the tax. BTC is decentralized, so such a law (if it's approved by Congress) won't affect PoW mining in any way. On the contrary, it will make BTC stronger and set the US back in crypto/Blockchain adoption. The country has already been taking an aggresive approach against crypto, so it should only be a matter of time before EU takes the reigns as the world's biggest crypto hub. I hope the 30% tax rate only applies to mining companies and NOT individuals. Because that would only make matters worse. Who knows what's next in store for Biden's ""Anti-Crypto Agenda""? Just my thoughts

### Reply 5:
Yeah its a huge jump and most of them might run away or just pay the tax till the new regulation says ""BAN ON CRYPTO MINING"". or they might declare non-mining operation and say it datacenter or so.Kazakhstan is crypto-mining friendly but I don't know until when it going to last. Since there is news that says ""An individual's income from the sale of digital asset issued by a foreign issuer will be subject to personal income tax at the rate of 10%. The taxable basis will be the positive difference between the sales price and the purchase price of the digital asset."" - <link> Just the sale of digital asset Is the regulation import still there, I mean if tax on mining is approved you need more time to even ROI right?

### Reply 6:
In my point of view that Bitcoin and also crypto might be in great danger because having 30% taxes on the Bitcoin could cause significant ending of mining powerhouse that run full on crypto and it could be a disaster for the Cryptocurrency community too. So by the way if these miners are agreeing to paying taxes.

### Reply 7:
well i'd say the usa is already hamstrung by the IRS backwards legislation about wanting to have a record of every single transaction you do even if it's just a cup of coffee you have to keep records on it and report it. so this won't really change anything who wants to use crypto in the usa?

### Reply 8:
Simply put: wouldn't mining just move to non US domicile facilities? That is the most straightforward. And have a mix of JV entities in the end

### Reply 9:
I know a man in the U.S that use solar power to mine Bitcoin, I lost contact with him in 2022, he told me how he makes money by selling power back to the Grid, I would have love to hear what he plans to do with this 30% tax on Bitcoin mining, because it is not possible to keep mining 24 hours per day using solar energy without the grid power.

### Reply 10:
30% of what exactly? 30% of your total electricity bill? i mean if he's mining with his own power then he doesn't have to pay anyone any tax for using that electricity. so he's good. if he has batteries then maybe he can be mining at night. but not sure how feasible that is

### Reply 11:
We have 3 arrays280 kwatts110 kwatts 45 kwatts435kwatts total which with grid sales means we burn 60kwatts 24/7/365 and net zeroso 60kwatts of free powerbut our mine burns 130kwatts so we buy 70 kwatts an hour on the cheapMy guess is if this happens we have to cut back to 60kwatts of free power and no cheap power with that 30% tax.No worries as that bill will bomb.

### Reply 12:
They are crazy, they want to earn 30% taxes from the miners, but they run to protect traditional bankers when they go broke...

### Reply 13:
Correct me if I'm wrong but it seems that we in the US already pay taxes <rest of thread truncated>
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16439,"Date: 2023-03
Topic: Lowering the cost of mining btc
### Original post:
Hey guys! I'm a solo miner planning to invest in over 30 ASICs over the next few months (mainly Antminers) looking for helpful strategies where I can lower the costs associated to mining bitcoin, since the whole process itself (from acquiring the miner to electricity and maintaining it) is quite high. If you have any suggestions, please mention. Thanks!

### Reply 1:
If you want to reduce the cost on mining, you will have to go for areas where electricity is cheap and a kind of environment that is very cold enough to cool your miners. But mining is not cheap, you will have no option than to go the expensive way, old miners may not perform the best as new miners, but some people can suggest going for old miners.I would advice you that if you can not mine, it is better to invest in bitcoin instead.

### Reply 2:
I don't think it's wise to buy all 30 ASIC units from Bitmain you can get cheaper from Canaan units if you are planning to lower the cost.And the main part of lowering the cost is the Electricity rate but I think you can only get cheap power in 3rd world country.Having a solar farm is I think another option to get free power but the problem is building a solar farm might cost more than buying ASIC units. Maybe you can build an on-grid solar panel to help reduce the power cost from your mining farm. Maintaining it should be an easy task just make sure you have some repairing tools like the test fixture, Multitester, and BGA soldering set then learn how to repair them here's the link below for a big list of ASIC repair guides. - <link>

### Reply 3:
There are numerous cost-cutting strategies available, ranging from hardware optimization to downtime reduction (to minimize a negative impact on profitability). Here's an article where you can learn about the various strategies that miners use these days to reduce Bitcoin mining costs: <link>

### Reply 4:
philipma1957 seems to be getting a solar mining operation ready with a few friends. Why don't you message him for advice?

### Reply 5:
No such thing can happen, there is something called ""difficulty"" in mining, it doesn't matter how cheap it becomes to mine bitcoin or how many people mine it, the protocol will always keep the average block time at 10 minutes, ya not 100% adjusted but overall perfectly aligned.Here is a fair warning, the recent gears made by Canaan are of very low quality, it's probably why they had 80% drop in revenue in Q4 last year, it's either Bitmain or Whatsminer, the former for better efficiency, the latter for better quality.The United States has 50% or more of the current hashrate, and it doesn't fall into the 3rd world country (I hate that term anyway).OP, the first thing you need to check is the power rate, anything above 6 cents is risky, 7 cents is maybe doable but you will need a lot of luck, depending on your power cost, you pick the right piece of gear, where do you buy the miners from also matters, which country do you come from? if you are in the U.S., it's cheaper to buy miners from other resellers than to buy them straight from the factory.

### Reply 6:
We have a 265kwatt solar array in operation. It is grid tied and provides about 55kwatts per hour 24/7/365 due to net metering with the power company.

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23064,"Date: 2019-09
Topic: Help setting up Ebit 10.2 Miner please
### Original post:
HI All, please assist, I took delivery of an Ebit E10.2 Miner, but have no instructions with it and can not find anything online. So, has anyone set one up and can anyone assist please? does it have a web interface or management software? I have looked on the ebang site but only reference to 10.1 devices.new to this so need some assistance please.Thanks in advance.

### Reply 1:
Ebit are know to be terrible gear with lousy support. You may need to post everywhere you can think of on the net to find some help. Try telegram try reddit. I am not sure anyone here has a 10.2 from ebitI have 7 kinds of bitmainI have 3 kinds of avalonI have 3 kinds of whatsminerI have 3 kinds of innosiliconBased on people that worked with the ebit 9 models I never tried the ebit 10 modelsI think a lot of info was in chinese maybe you can find a guy to help translate it to english if you find it in chinese.Good luck you will need it.

### Reply 2:
Thank you - looking though my order, it appears I was sent this instead of an Antminer - the fun begins.

### Reply 3:
I tried to search on Google for manual or instruction but this is what I found below.Try this instruction from here <link> is Ebit 10.1 miner but I think they don't have any differences so the step by step setup guide of this video will help to set up your Ebit 10.2 miner.

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10908,"Date: 2020-11
Topic: New one fan S7
### Original post:
I was wondering others' thoughts on this new model. At the ever dropping but currently 1.386BTC cost... its a tempting purchase.I understand they are trying to cut costs... but...I think the single fan is a bad idea. I rely on the fans on either side to attach ducting and for it to handle the fact I have ducting to and from the miner on both ends.I think the open outlet is going to be creating an issue for people without passive cooling in the room/space. Presently my 5X7 room I have my S7's in do not get above 78*f on hot days with the miners closed in there.. Having to manufacture a new outlet housing or gut an old fan body to make an appropriate ducting attachment.... is going to be annoying.Any opinions on running the fan solely as a puller fan, and not a pusher (oriented to the miner)? This would 1/2 solve my issues; because its easier to manage the heat through the exhausting; not as much as it is to duct cold air into the fronts.

### Reply 1:
One of my hosted S7 had a shot fan and one down board. It still ran hot with only two boards powered. I wouldn't run a one-fan S7 on stock clock south of the Arctic Circle.

### Reply 2:
I was temped to order another S7 but with only one fan now I don't think I want to take the risk. I wished they would elaborate on why they decided to go with one fan only.

### Reply 3:
I would guess was to lower production cost. If they make thousands of miners and cut fan cost on each one that could add up. How they will run we will see once people start getting them.I would guess you can add a second fan: <link> . I can't imagine them taking fan pins off IO board, but we have not seen the batch yet so can't confirm that. It is just a guess.

### Reply 4:
The problem with ordering a fan from them though is the shipping that they add to that price. At least the last time I checked they charged a lot for shipping just a fan. Would have been better off getting a batch 15.

### Reply 5:
Don't worry, there are so many fools and suckers who are buying these 1 fan S7 miners. Bitmain Chinamen are laughing all the way to the Chinamen's Bank.

### Reply 6:
They are doing me a favor I have more then 13 fans on hand. but the price drop needs to be to 560 not 575.

### Reply 7:
Anyone think repurposing the fan from a push to a pull config would be much of an issue?With the amount of heat the S7 puts out; I couldnt ever imagine running mine on just one fan. Then again; 50% or less fan speeds are common.....Maybe that's their way to telling us that we must just deal with the noise it makes....

### Reply 8:
Honestly, I don't like this move at all. It looks like a marketing gimmick to me. Recently prices of S7 have been lowered and now they removed one fan just because they know, people will (have to) purchase extra fan from them as well and as result, they'll be selling it at a win rate (not sure how much shipping will be added for a fan though). Never underestimate power of fan when it comes to air flow, it's mandatory IMO.

### Reply 9:
It's just mining getting more and more industrial and less home user friendly

### Reply 10:
It's more energy efficient with one fan

### Reply 11:
Just drop the freq to 500 set the fan at 50%Should mine

### Reply 12:
Yeah it's more energy efficient, until temps go up, and the chips start pulling more current for the same work and cancels it out and then oh also you have a hotter machine that's more likely to die early and possibly catch things around it on fire. Definitely an improvement.

### Reply 13:
I look at it and i see a prisma with temperature sensors

### Reply 14:
If they are using good thermal adhesive and a good fan, it ain't impossible after all.Avalon 6 comes with a one fan and at least my temps are at reasonable level.

### Reply 15:
Avalon6 does well with 1 fan, but it's also about 30% less heat. The S7 (current design) has quite a bit more solidity of the airflow path, which means constriction, which means more pressure needed to move enough air through to adequately pull heat away. If they've worked it out to where one fan can do it without bursting into flames, that's great. But what's the practical upperbound for intake air temperature?

### Reply 16:
yes it is tru the avalon 6 has 1 fan but it has huge massive heatsinks. It also pulls 1000 watts or less at the ac plug.the s-7 has 140+ heat sinks and it pulls 1400 watts or more at the wall.Like I said in my case I have lots of fans so it is an easy fix.But the price drop of 7 dollars is insulting.It should of went to 560 not 575sidehack has a good point if your mining room is 70 f or less you may be good but if you have a 90f or more room you will suffer.Comes down to drop the freq from 700 to 600 maybe 500 or add a fan

### Reply 17:
We are making an order with coupons (many emails with BMT in last two weeks). Here is what we found:Its not a april fools joke, it is called AntMiner S7-F1Low noiseidentical performance with low pow<rest of thread truncated>
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10797,"Date: 2019-02
Topic: Announcing the WhatsMiner M10S 44TH @ 60W/TH or 55TH @ 65W/TH SHA-256 16nm Miner
### Original post:
well the m10 does 34.5 th at 68 watts a th which is the best gear I ever owned.if these do 44th at 60 wattsand 54th at 65 watts it would be amazing improvement .I did multiple videos of the 34.5th m10 on you tubeI now have got to get one of these

### Reply 1:
That's a lot of power....yikes!

### Reply 2:
I like the 44Th/s model more because of the insanely good efficiency and better amount of load for 16 Amp circuit.edit: btw. see my m10 review here <link>

### Reply 3:
I posted 3 videos in your m10 thread.these guys are making monsters.44th54thI guess I have to try to get one of them based on this unit.

### Reply 4:
Wow, I can't wait to see the pricing. The 55TH @3500 will be almost maxing one of my 20A/240V circuits (3840 usable)!

### Reply 5:
Just guess how I feel when I think about that miner and my 16A/230V circuits.

### Reply 6:
I'm kicking myself for not installing 30A instead of 20A. A larger subpanel with 5x30A is infinitely better than the 5x20A I have... except for the heat and noise. Lesson for people jumping into the mining world: more power is always better than less power!

### Reply 7:
... dont buy. Sorry Scott, but Halong was damage enough to the <truncated> will not bring you money or ROI.Same like Halong or Inno.Just see what chip design they use (10nm from Samsung, 14nm or 16nm).But they gain the same efficiency like the odd and old 16nm Bitmain chips.IT IS ALL ABOUT DESIGN and about HASH/WATT.And this chip design of Bitmain - translated to a 10nm or 7nm chip is like the one ring: To rule them all.7nm chip was announced 8 hours before on Bitmain:ALL BASE BELONG TO US

### Reply 8:
Whatsminer stuff looks great. Easy yo be enthusiastic about it till pricing comes into play. Love what their doing but over priced and will be even less accessible till we find out how exemption turns out for tariffs. Edit. After I posted this I checked Pano's website. M10s has been removed and don't see any tweets about it anymore.

### Reply 9:
Follows how Innosilicon has ""sold out"" of the T2T+32. Think they're pulling these products until they see how the tariffs shake out?

### Reply 10:
No, their not concerned with tariffs to the US. I see the withdraw of listing to move more sales to the m10. Still lots of learning for marketing in this space.

### Reply 11:
In Stock. 2 Day Shipping.

### Reply 12:
Oh, weird. Get them while they're hot. I imagine pano's website is down.Yup, site down. We got pricing but not spec. Taking pre orders if buyers like.

### Reply 13:
Lol, Philip you're a very welcome buyer. Looks like just a few units left in this batch. We're closing orders for credit as routing time is longer for those payments.55th/3500w was the spec communicated.

### Reply 14:
maybe if you let me

### Reply 15:
Announcing the WhatsMiner M10S 44TH @ 60W/TH or 55TH @ 65W/TH SHA-256 16nm Miner:See the post on Medium: <link> the Tweet on Twitter: <link> many details available yet. Ships in the end of January 2019.

### Reply 16:
Is there a way to get hands on a demo, ive got 40 mw to fill and I need to figure out what hardware we want to go with sooner rather than later

### Reply 17:
If it runs like the m10 you will like it .My 2 m10's have been flawless.

### Reply 18:
Yea I am pretty excited to test it out.Thanks Scott!

### Reply 19:
Be cool to hear more about these. Our first orders started arriving early this week for buyers.

### Reply 20:
i get about 55.4TH (slushpool) @3500 watts, 1 hour averagebut have to wait until 24h average. seems promosing.i mean, 16nm vs bitmain 7nm BIT*H. and its even without asicboost

### Reply 21:
I just received 1 M10S today, getting 51 tH/s and 3213 watts at the wall in low power mode. Exactly 63 W/TH. I don't think my PDU can handle regular power mode so I didn't test it; I was already getting warnings on the PDU with low power mode set.

### Reply 22:
What voltage are you running at? 208v, 220v, 240v?

### Reply 23:
It is actually a 3350 Watt power supply unit. WhatsPower P20. specs--> <link> full load and 95% nominal power efficiency, the theoretical max. power at wall is about 3526 Watt.

### Reply 24:
Well that looks like their really playing fast and loose with max power draw.Is there any info regarding burn in for long term 24 hour operation? Just curious as I've always been weary of built un PSU's

### Reply 25:
@offordscottOkay, thanks for the clarification. I got to say that I don't have a M10s.It seems that the actual nominal max. power capacity is slightly less than mentioned in the MicroBT website.

### Reply 26:
HF do you have a microBT contact? Their email gets returned.

### Reply 27:
Glad to hear some have made it out. These are the sold demo units I'm guessing.Can you guys post photos or screencaps of the logs and gui for everyone to checkout.I heard these were being priced at 3200 anyone know for sure if that's what they are going<rest of thread truncated>
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    ""hardware_name"": ""20A/240V circuit"",
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  {
    ""hardware_name"": ""16A/230V circuits"",
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  },
  {
    ""hardware_name"": ""30A circuit"",
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  {
    ""hardware_name"": ""5x30A subpanel"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""5x20A subpanel"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""10nm chip from Samsung"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""14nm chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""16nm Bitmain chips"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""7nm chip from Bitmain"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""WhatsMiner M10S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon T2T+32"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""WhatsPower P20"",
    ""hardware_is_owned"": false
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]"
24166,"Date: 2023-09
Topic: Innosilicon t2th+not hashing
### Original post:
Hello!I have a innosilicon t2th+ that is not hashing. I set the pool and worker and it only says updating settings. I leave it on for about 2hours and it does not go past through that setting. It also does not appear on the pool. I have tried resetting it with no improvement. Anyone knows what is wrong?

### Reply 1:
Have you tried to update the firmware to the latest firmware?If not try it first but the problem is the firmware is no longer available in Innosilicon support you can try to contact them through their email to request for latest firmware.Here's the email: <truncated>

### Reply 2:
Ok thanks. I did check on their website but there are no updates. I sent an email to them. I did find some firmware on the web but its risky stuff

### Reply 3:
Where did you find the firmware? Did you find them on the Innosilicon website?If you find a firmware make sure the firmware is for t2th+ but if it's a random firmware don't use it because flashing a random firmware to this unit can brick a program and unable to flash it back to stock firmware be careful.

### Reply 4:
No I found external of innosilicon website. So it can contain malicious virus

### Reply 5:
Hey, you can download with confidence at ZeusBtc.com, these firmwares are from <truncated> Miner Firmware Download | Zeus Mining

### Reply 6:
Ok thanks. I am going to try this out. Still have not recieved response from innosilicon

### Reply 7:
Hello.I tried to upgrade the firmware and it says on status: FailureI tried upgrading on the miner web page

### Reply 8:
Check carefully the firmware you are trying to flash t2th+ does have two different firmware the Soc and G19 firmware.Check the miner's dashboard under overview you should see the controller's version if it's g19 or Soc. Or check the control board directly there is a G19 or Soc version written on the control board.

### Reply 9:
Yes. I managed to install the soc version. But its still not mining. It stays at the status page and never shows the hashrate, fan speed etc. I have left it running for about 2 hours now and does not appear on the pool also. What can I do more?

### Reply 10:
Would you mind to tell us where or what pool you mine you might be configuring the pool incorrectly extra spaces can cause to miner not to work properly.If its setup fine then can you share the logs here so that we can analyze the issue

### Reply 11:
Ok thanks for the help!When I set to factory settings it goes to the factory pool but that way it also does not hash. Later I will turn it on again and send the log

### Reply 12:
How can I get the logs?

### Reply 13:
I don't know exactly how but if you can access the IP would you mind adding this after you type the IP on the browser ""/logs"" without the double quote.Sample <truncated> post here with the insert code tag.

### Reply 14:
I installed the innomonitor and managed to find error code 35

### Reply 15:
Error code 35 means the power output is abnormal and the power supply and control board need to be checked. You can view more explanations and troubleshooting of Innosilicon error codes here.

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23375,"Date: 2020-12
Topic: one hashboard is 91 Degree
### Original post:
Hello. i have a t17e. one hashboard is 91 degree, screenshot below:<link> i want know if it has any issue? should i do send hashboard to repair? or its normall? how i can check its which hashboard? i mean its Chain[0] or Chain[1] or Chain[2]?log is <truncated> OK!2020-12-24 <truncated> Config are different, min = 1820, max = 1830, will use max one.2020-12-24 <truncated> open sweep tag failedvoltage_ref = 18302020-12-24 <truncated> create thread2020-12-24 <truncated> Chain [0] PCB Version: 0x010a2020-12-24 <truncated> Chain [0] BOM Version: 0x01002020-12-24 <truncated> Chain [1] PCB Version: 0x010a2020-12-24 <truncated> Chain [1] BOM Version: 0x01002020-12-24 <truncated> Chain [2] PCB Version: 0x010a2020-12-24 <truncated> Chain [2] BOM Version: 0x01002020-12-24 <truncated> Fan check passed.2020-12-24 <truncated> chain[0] PIC jump to app2020-12-24 <truncated> Check chain[0] PIC fw <truncated> <truncated> chain[1] PIC jump to app2020-12-24 <truncated> Check chain[1] PIC fw <truncated> <truncated> chain[2] PIC jump to app2020-12-24 <truncated> Check chain[2] PIC fw <truncated> <truncated> create thread2020-12-24 <truncated> power type version: 0x00422020-12-24 <truncated> Power init:20<rest of post truncated>

### Reply 1:
How long have you had it? When was the last time it was cleaned. It's easy enough to pop the fans off a machine and look through with a flashlight for any blockage. Give it a blow through with a can of compressed air if you see any blockages that aren't heatsinks that have fallen off.If it's heatsinks or a damaged board you're gonna have to weigh your costs and/or decide if you can sort it out yourself. Sort of comes down to what it's going to cost to get it repaired (shipping, labor, parts) and what you expect to earn with that extra board mining. Without it the machine would still run but at reduced earnings and power consumption. If you think in the lifetime of the machine the repair will more than pay for itself, than definitely explore your repair options.

### Reply 2:
That's abnormal mostly I see around 32 degrees stable and running. And look at the last log it stops mining due to overheating there might be something inside of the miner, the heatsinks may not be attached/glued properly that's why some of the ASICS are showing abnormal temp.Why not run only 1 hashboard to know which one is a chain[0],[1],[2] you can run them one by one. Get some idea on how to run them one by one from here Test hash board one by oneOr try to disassemble the unit and the check those heatsinks.

### Reply 3:
It's chain 1, aka the middle chain that is throwing the over temp error, it's usual for the middle board to run slightly warmer, but not as hot as it does in your miner, I also noticed that the variance in temperature based on the sensor location is HUGE, even on the other two chains, your temps are all over the place.Hot, Cold, Hot, Cold, and the fans are spinning at over 6000rpm which is just about that maximum, I believe that something is blocking the overflow of the bottom part of the miner, the 4 sensors are located near the 4 corners, so you have 2 on the upper side and 2 on the lower side, and since ALL of the 12 sensors show the same readings, it looks like something is keeping the air follow too low on one of the sides.

","[
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  {
    ""hardware_name"": ""fans"",
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10798,"Date: 2019-02
Topic: please help me about miner hardware
### Original post:
You don't describe your problem so specifically but read this first: <link> is also useful info <link>

### Reply 1:
hello please help me i bought a S9 but i cannot work with this hardware for connect to poolanyone can help me

","[
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    ""hardware_name"": ""S9"",
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23216,"Date: 2020-03
Topic: Issue with toggling A841 command-line options
### Original post:
I am using this thread to help send commands to an 841. I can SSH in and send the below command:cgminer --lowmem --avalon8-fan 40-100 <truncated> 0 {REDACTED POOL} --api-allow W:0/0 --api-listen <truncated> 0 <truncated> 0 --real-quietThe only way this works is if I first stop the cgminer <truncated> stop) and then send the above command. The problem is after that it seems that I am locked out from stopping or sending new commands (for instance, set voltage level 1 with the above command with modifier). It seems that I am shutting down the default running cgminer and then starting a new one. Is this correct? Is there a better way to be able to toggle? Thanks in advance

### Reply 1:
Yeah it is like a reboot. Are you using a rasp pi 3+ or rasp pi 3 to do this?

### Reply 2:
It is a 3B (I couldnt get the 3B+ to work).But once I send my SSH command, I can't repeat the process to send a new command. It takes a reboot to send it back to the first setting (separate question, is there a reboot command). I essentially have to send one command, reboot to the original settings, send the next command, reboot, next command, ect.Thanks

### Reply 3:
I know you have a lot of these to hook up.I also know you need to be able to alter watts usage.Maybe having 1 pdu with 10 rasp pi's attached that you remotely power on and off allows for 10 rasp pi reboots in 1 shot.if you have 12 x 841's to each rasp pi it would instantly make them all (10 x 12= miners) able to take a new set of ssh commands.

### Reply 4:
Why is this in the wrong thread?Should be in the 841 thread unless you have confused a 921 with a 841... Requested mods to fix that

### Reply 5:
I put it here because it was specific to the commands and options that were being discussed in this thread.

### Reply 6:
This thread is for the 921, you were discussing the 841.Yes the commands for them are similar but - for many of the commands the values that the commands accept are different eg:-avalon8 (or 9)-voltage-level and <truncated> and the -freq values. Those have different ranges and step values that they will accept.The 841 thread covers all of the commands and values that the 841 will accept. Here are ones in that thread from PhilTa boot, several of the 841 commands seem to have no effect on the 921 so....

### Reply 7:
I am not sure if you can get past the hard reboot. I know some have claimed you can but no one that I know has shown a method to do so.I know you will have over 500 units which means more then 50 rasp pi'sIf you use a few pdus with hard power off options and 20 rasp pi's per pdu.It is 20 instant reboots. Then a new ssh can be entered for them. I also know this is not as fast as you want.But as I said I don't know of a quicker way then this.

### Reply 8:
Fair enough. The issue isn't that I can't make changes but that once I make a change it requires a hard reboot before I can make any other changes.A little more background. I am sending these commands via Windows PowerShell. Once the command is sent, I get constant status update run vs a command prompt.

### Reply 9:
Thank you! We do have a 24 outlet PDU and our plan is as you described. I think that I am more wanting to win/learn as the PDU solution will work. It just seems that if I can restart from the GUI I should be able to send a command.Thanks again!

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16427,"Date: 2023-02
Topic: What Exactly Happens right after you power up your Miner
### Original post:
Hi. I was always wondering , technically what happens after the startup of a Miner. I mean I know that's too basic but I always loved getting deep. I mean what does the cpu do ? what parameters does it check ? what is the architecture ? what does every part inside the cpu do when its running ? And how does handle the Algorithms of BitCoin. I would also like some information about firmware , what happens when you transfer updated firmware using the sd card.Sorry if my questions are too basic but knowing a lot about bit I always liked to know about what actually happening inside of that noisy box!!Thanks in Advance

### Reply 1:
More or less the same as what happens when you boot any other computer.The firmware (BIOS) does a quick check of some things same as your PC, then it loads an OS, in the case of miners it's linux.Then it start running some programs. A web server so you can see whats going on and a mining program so it can mine.That is it. There will be some slight differences based on manufacturer but not much.You can go out and buy a USB stick miner and run cgminer yourself on any PC and are doing the exact same thing that a full miner is doing.Just a lot slower.....You should move this to the hardware board. <link>

### Reply 2:
you can look at the log it shows a lot.I can show you a l3+ logCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Initializing cgroup subsys cpu[ 0.000000] Linux version 3.8.13 (xxl@armdev01) (gcc version 4.7.4 20130626 (prerelease) (Linaro GCC 4.7-2013.07) ) #22 SMP Tue Dec 2 15:26:11 CST 2014[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=50c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine: Generic AM33XX (Flattened Device Tree), model: TI AM335x BeagleBone[ 0.000000] Memory policy: ECC disabled, Data cache writeback[ 0.000000] On node 0 totalpages: 65280[ 0.000000] <truncated> node 0, pgdat c06cb100, node_mem_map c0726000[ 0.000000] Normal zone: 512 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 64768 pages, LIFO batch:15[ 0.000000] AM335X ES1.0 (neon )[ 0.000000] PERCPU: Embedded 8 pages/cpu @c0933000 s9408 r8192 d15168 u32768[ 0.000000] pcpu-alloc: s9408 r8192 d15168 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 64768[ 0.000000] Kernel command line: <truncated> init=/<rest of post truncated>

### Reply 3:
Here is an other example of a log with a SHA256 ASICIt is from one of my Antminer R4 with Braiinos (S9 firmware)<link>

### Reply 4:
People , I can't Thank you enough. You've helped me a lot. Logs where really helpful. I'll ask further questions , if something wasn't obvious.

### Reply 5:
always ask you will find a lot of knowledge on this forum

### Reply 6:
After launching your miner, if it is configured to work in the pool, the following processes occur, if in simple words without logs:1.BIOS initialization: the miner's Basic Input/Output System (BIOS) checks the hardware components and initializes the settings required for the operating system to load.2.Operating system boot: the miner loads the operating system and starts the required drivers and services.3.Mining software launch: the miner starts the mining software, which is designed to solve complex mathematical problems in order to validate and add transactions to the <truncated> with mining pool: the miner establishes a connection to the mining pool and receives the necessary parameters, such as the pool address, port number, and miner's unique <truncated> hash function: the miner uses a cryptographic hash function, such as SHA-256, to perform a series of mathematical operations on the data in a block and produce a unique output, known as a hash.6.PoW calculation: the miner performs a proof-of-work calculation by repeatedly hashing the block data and comparing the hash to a target value. The target value is adjusted by the network to maintain the average time required to mine <rest of post truncated>

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  },
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11357,"Date: 2023-09
Topic: GekkoScience Compac F
### Original post:
Hello - Is there a separate thread for these USB miners?thanks!

### Reply 1:
..... 6 lines down from here....<link>

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24187,"Date: 2023-10
Topic: AvalonMiner 1166Pro-72
### Original post:
Hello,can someone help me find the problem with my Avalon ?Output voltage to hashboards is 12V.Dashboard sometimes not respond. -> necessary restart minerI upgrade firmware trought FMS, but same issue.Have someone dump of winbond flash ? I would like to try to flash the software through the programmer.Thank <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':2,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1419096.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 1 ] Elapsed[92] <truncated> LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[23] TMax[23] TAvg[23] Fan1[5365] Fan2[5337] Fan3[5311] Fan4[5329] FanR[70%] Vo[316] PS[0 1207 1265 78 986 1264 1135] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[120] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECH<rest of post truncated>

### Reply 1:
In your logs under ECMM the value is [1] which is abnormal according to the description logs from Canaan this error is pointing to your MM board there might be a connection problem between the hashboard and the control board. And look it only detects 1 hashboard.Would you mind to try to replug all cables from the control board and hashboard then test it again.

### Reply 2:
I disconnected it, cleaned it but the same problem.thanks.M.

### Reply 3:
Any changes in the logs? I hope that you post the new logs here.If is it still the same as the logs from your post above then the control board is already damaged.I don't know if this one will work but would you mind to try to test the hashboard one by one? Disconnect the two hashboard from the control board. Do this to all hashboards and find which one is not detected properly and maybe one hashboard is shorted. Then compare all logs between these hashboards.If these two hashboards are not detected by the control board remove the two hashboard then run the unit with a single hashboard.Let's see if the error is still the same but if it's the same then you will need to replace the control board or hire a professional technician.

### Reply 4:
There are a lot values of '273' in ur log. This might be a sensor malfunction or even worser.As BitMaxz already mentioned it only detects one hashboard which could cause this problem. Are you 100% sure that each cable is connected properly? Only one small mistake could cause this that one of the hashboards is non-responsive!

### Reply 5:
Yes, i'm sure, boards are connected properly. Here is new <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':4,'Remote <truncated> Blocks':2,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1385280.0] NETFAIL[0 0 0 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 1 ] Elapsed[70] <truncated> LW[0] MH[0 0 0] HW[0] DH[0.000%] Temp[24] TMax[24] TAvg[24] Fan1[5340] Fan2[5347] Fan3[5360] Fan4[5345] FanR[72%] Vo[316] PS[0 1207 1265 77 974 1264 1122] PLL0[0 0 0 0] PLL1[0 0 0 0] PLL2[0 0 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[-273 -273 -273] MTavg[0 0 0] TA[120] Core[A3201] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[1 1 1] ECMM[1] SF0[448 468 488 508] SF1[448 468 488 508] SF2[448 468 488 508] PVT_T0[-273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273 -273<rest of post truncated>

### Reply 6:
I couldn't see any other issue the logs under ECMM amd ECHU are pointing to your control board's bad connection and overheating issue.So my guess there is a hash board or cable that might cause this problem.If I were you learn how to read logs the guide can be downloaded at <link> the troubleshooting guide from that link open it and scroll down to the bottom you can see all meanings of each logs read the ECMM and ECHU.

### Reply 7:
Thank you for help.I changed all cables but same issue.Can an avalon machine work with one board? I would try to test board by board.Here are new logs after cables <truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':0,'Local Work':2,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncate<rest of thread truncated>
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24106,"Date: 2023-03
Topic: Repairing Antminer S9j
### Original post:
I bought a used S9j miner and it is not in good working order.Now I am trying to decide if I should send it back or negotiate a price drop and then learn how to repair it. Any helpful hints would be much appreciated!One of the three hashboards does not work. The red LED comes on sometimes, and sometimes a small number shows in the GH/S(RT) column, but it never heats up or produces significant hashes. Mostly it hashes zero.The power supply has damage to multiple cables, they must have been chafing against sharp metal shelve edges or something like it. Some of the output capacitors in the PSU seem to be getting much hotter than others, and the miner (hashing on 2 boards only) stops hashing every few minutes and starts over. I don't know if the PSU might be too weak, have not investigated in any detail yet.Questions:1) Is it potentially possible to repair the hashboard? I have swapped over the cables between the control board and the hash board, the fault is in the hashboard not the cable or control board.2) Can the capacitors be replaced? It looks to me like I can solder new ones in, but I have no idea if they are hard to find, and if I would need to replace all of them instead of th<rest of post truncated>

### Reply 1:
Return it .

### Reply 2:
Definitely a sensible suggestion! Thanks!But on the other hand, I like repairing things and learn a lot in the process. I think this is just the first used miner that I might eventually revive and deploy on a hunt for stranded energy. I'll try to get a decent partial refund and then get it into a functional state.

### Reply 3:
That's a good choice if the seller accepts your deal but most of the sellers if you buy at that price they do not refund or partially refund you are lucky if the seller accepts it. About repairing it you can repair it ZeusBTC has some guide for repairing the s9 hashboard but not the whole unit.And about replacing Hashboard on the s9 series it doesn't need to match like power or serial it is not the same as the 17 series above that requires hashboard editor to match EEPROM data like serial number and power. About the wire, you can replace it with the same gauge or above to make sure there is no power lost or sometimes it can lead to a short circuit, or if it is replaced with a higher gauge wire it won't easily melt.

### Reply 4:
Thanks!The seller was really quick to refund the largest part of what I paid. 64% of initial purchase price were refunded within an hour of me laying out my reasoning for why I would only pay that much if it had been listed in it's actual condition.I'm the happy owner of a repairable wreck!

### Reply 5:
A little update:When I disconnect the power cables and the control cable (or what is that called?) to the faulty hashboard, then the S9j runs continuously and the 2 good hashboards are hashing close to their expected <truncated> are probably enough undamaged PSU cables to run both of the good hashboards with undamaged cables and make the rest safe very cheaply.My plan is to see if I can find a visible difference between the good and bad hashboards, in case it is something easy to fix. If there is nothing obviously fixable, then I want to try to mount only the 2 good boards in the housing and add extra heat sinks and 200mm fans at each end, and stand the miner up so that it blows out the top for some free chimney cooling effect.Hopefully I can tame it sufficiently to turn it into a 9.6TH/s miner that can be operated with reasonably low noise levels inside a house. Tame enough to be plugged into any normal power outlet and be turned on when the solar panels produce more power than what gets used at the moment.I want to eventually have a refurbished miner for every neighbouring house in my area which has solar panels. Different miner sizes for different amounts of stranded energy, but<rest of post truncated>

### Reply 6:
Your Antminer is rebooting because of the faulty board.You can try with only the faulty one connected to the control board and to the psuYou will see if the board is ok or notIf you can, try with an other PSUNever use these damaged cables man, it is very riskyAs you said you can still use the Antminer with the 2 good boards. Don't forget to remove the data cable between CB and faulty HB if you are doing it like that, you can remove completely the faulty board.As BitMaxz said, you can learn how to test and fix your faulty board. Zeus website is a good starting point. If you want, I can DM you a Discord server where people are pretty efficient with hashboards repairs and tests

### Reply 7:
Thank you very much!I spent a few hours cleaning and repairing the cables with 'liquid electrical tape' and testing the resistance / continuity of each cable.Then I ran the miner with 3 boards in it, but the faulty one completely disconnected. I think 3 boards need to be in the housing or the airflow will bypass the remaining boards.Then miner ran well for 3<rest of thread truncated>
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23144,"Date: 2019-11
Topic: Antminer Fan Replacement Question
### Original post:
A while ago somebody posted a list of replacement fans for S9 units with links to Amazon / Newegg and a few other places.It listed which ones were quieter / more powerful / etc.I went back through posts here till 2017 and could not find it. Does anyone still have the list or a link to it.Thanks,Dave

### Reply 1:
Delta QFR1212GHE is a good replacement fan and quite widely available.

### Reply 2:
That part I have. But someone had the ""complete list"" kind of thing.What did work, what did not, what was quiet but ran to hot, etc.I thought it was here, I am wondering if I saw it on reddit or someplace else.Thanks,Dave

### Reply 3:
Enermax D.F. Storm are quiet but run too hot with stock S9.Noctua industrialPPC are even more quiet, but run even hotter with a stock S9.Ofc this story is different if you have a well underclocked S9 or other miner.I have my low power fw Avalon841 running with one Noctua industrialPPC 3000rpm model

### Reply 4:
That was the kind of list I was looking for.Going to have to spend some money at Amazon to play around.I just didn't want to go for ones that are a known no-go due to heat.Thanks,Dave

### Reply 5:
The key point to remember with s9's is that the fans have to work against a fairly high airflow resistance cause by BM's insane mass of small heat sinks. That means they have to produce high static-pressure which is why they run high rpm. That in turn = loud.Unless the miner is UC/UV'd there is no getting around this.

### Reply 6:
100% true....with a but...I have many S9 units that are not 100% great.They are really worth zip at the moment. Nobody wants old, flakey miners. By the time I ship them everyone looses money (except FedEx Ground)However, I can put in fans that are quiet and use them as small heaters in the warehouse over the winter. It is never going to get above 40F in there so I can run them with lower speed / lower noise fans and the miners are probably never going to care.If they do go get to hot they shutdown. If they loop between being too hot and then 40F and this causes the hash boards to finally fail, no big loss the beagleboard is probably the only thing that is worth money.Sad that it has come to this, but it is what it is. -Dave

### Reply 7:
How much can you sell your miners for locally ? I know S9s are becoming kind of worthless to many people out there, but they still hold some value, why not get rid of them for 100-150$ while you still can ? it's better than ""torturing"" them with low fan speed. as for the winter heating , it does make sense, but if say nothing major happens in BTC price till winter ends, then you won't be able to get a 100$ not even a 50$ for those S9s.

### Reply 8:
read my mod for a quiet s9 it the fan will cool 2 board miner and it is fairly quiet .it is in hardware titled what to do with old s9si will bump to the top

### Reply 9:
You would be surprised. I know someone that buys them simply because they are cheap enough that can be repaired or used for parts, if you sell them cheap enough (around $200) it is in fact the last chance to get rid of them...As heaters you can always play with BraiinsOS and force them to different speeds, if they get too hot just slow them (UC/UV) down... And perhaps removing the middle board helps too.

### Reply 10:
The problem is I was getting offers of at best $100 / $125 shipped for old S9. Hell I could not sell someones CLEAN AND 100% PERFECT T9+ for $150 shipped: <link> units with wonky hash boards and dirty fans were not even getting any looks.But I did get offers for the controllers for $50 to $75 shipped. So a small board that I can ship easily anywhere in the US for under $10 that I will never hear about again is a lot easier then selling a heavy miner that has issues. But you do wind up with a pile of hash boards in the end. I would like to thank everyone on the fan advice I have a few fans coming in to play with.-Dave

### Reply 11:
150$ for T9 is a terrible deal, even if its brand new, you shouldn't be comparing those to S9, by the way if you have a serious offer for the control boards i might be able to buy those hash boards from you, i have a client looking for some, let me know how many you got.And by the way, dirty fans can be easily cleaned with a blower and a brush

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22851,"Date: 2019-01
Topic: Step Up Converter Question
### Original post:
Greetings.I have an Bitmain Antminer T9+ 10.5 miner with APW3++ power supply.I live in the United States and have a dedicated 110V circuit I'd like to put this unit on. I don't have any more room in my panel for additional breakers at this time.Would this setup work with a ""step up"" converter which converts the 110v to 220v?If so, what are the pros and cons to this solution?Any information on this topic would be greatly appreciated!Thanks!

### Reply 1:
This is a very bad idea for a number of reasons.Reason 1: Unless you are paying $0.04/kwh you will be losing money running it.Reason 2: Step up converters are not meant for a continuous 1500 watt load like you would be trying to apply and chances are it would burn up and be a possible fire hazard in your house.Reason 3: You would be buying yet another piece of hardware and making an already nearly impossible chance at ROI completely impossible.Sadly the T9+ is nothing more than a doorstop at this point, it never really had a chance to be successful.

### Reply 2:
Thank you both.If I connect to the controller and one board, will my hash rate be approximately 5.25 TH/s? (Half)...or will it be less?

### Reply 3:
Actually the APW3++ is rated for 1.2kw (100A @ 12vdc) on 110-120vac input and from experience is very happy putting out over 1,300w with a high line of 115-120v so running 2 cards is very doable and possibly even all 3 cards though that will be pushing things.As for speed, the per-card speed = rated speed / number of cards.

### Reply 4:
fanatic26 gave you some good advice.let me give you some more take your psu and connect it to the controller and then connect it to one blade your cost to do so is zero.you will use 1/3 the power and I believe that is about 500 watts.that psu should put out 500 watts easy on 110/120 voltsnext piece of advice point it at bravo-mining you get coin when a block is hit and a 1 btc bonus if you hit the blockmmpool you get coin when a block is hit you keep the block fees if you hit the blocksolo.ckpool you get the whole block if you hit nothing if someone else hits it.500 watts is 12 kwatts a day or 360 a month at 10 cents that is 36 bucksyou will most likely lose money at 10 cents a kwatt but if you follow my advice you have a chance at profit

### Reply 5:
I think the answer is no. A step up transformer can double the voltage going to the power supply, but at the cost of doubling the current being pulled from the 110 volt outlet. Since higher current cause increased heat in wires of the same size, doubling the current will overload your 110v wires, pop the fuse, melt the socket, and possibly set things on fire.Unless you have a 20-30 amp 110 volt service (anything's possible, but you're talking 8 gauge wires and some odd plugs) this is a really bad idea.As a bonus, the converter will have a certain amount of inefficiency, so it will get warm and waste more power.Best solution is to find a 220/240v outlet. Dryer maybe?

### Reply 6:
Thank you all! Currently running 2 cards and hashing just over 7 TH/s.

### Reply 7:
I haven't yet seen anyone mention that Bitmain released a ""low power mode""/asicboost firmware for the T9+ last week that cuts down on power consumption without affecting hashrate (assuming the pool is compatible). Might be worth a try, even if you still can't run all 3 boards.<link>

### Reply 8:
this is new and may help op.

### Reply 9:
No. You need to get two 110v circuits (from different phases), power a socket from that (the two hots), and you get 208v. That would work. Its usually what you find for dryer or ac plugs.You could in theory use two separate power supplies, and achieve about the same thing. Those could probably demand a separate circuit each... You see, if the T9 pulls 5A at 220v, its going to demand at least 10A at 110v, possibly more due to wire resistance.Which is also why you cant just put a transformer, it would likely exceed your circuit capacity (if not the transformer itself).

### Reply 10:
Mild bit: In the US, power is typically delivered by a transformer that takes the high voltage and steps it down to 240v with a center tap. That tap is where you get 120 on each side of your panel, 180 degrees out of phase.In an office, it's stepped down to 3 phase power. From leg to leg it's 208 volts with 3 legs 120 degrees out of phase and 120v comes from tapping a leg to the common center.

### Reply 11:
Oh, you have an even better option then. The ""office"" solution is what they give here to residential (usually two from three phases). So you have access to 240v at home...

### Reply 12:
I think nobody have answered your main question, rather everyone gave you solutions which is very nice of them.the answer to your question is YES . the set up would work.now that is from a technical point of view. but the economical point of view is that if you have a voltage converter that can handle the load required by the T9 then go for it. bu<rest of thread truncated>
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23218,"Date: 2020-03
Topic: Antminer S9SE fan speed control ? (noise reduction?)
### Original post:
Hey guys, new to the game here. got my new bitmain antminer s9SE recently and that thing is LOUD, i mean louder then the whole datacenter where it's at! There's apparently no option in the web access to control the fans and there is also no SSH enabled. Is there a way around this?It seems like this is a very recent model and there ain't much about it online, hoping this thread will be useful and helpful for those in the same situation as me.

### Reply 1:
Not really.The S9E is not 'recent', it has been out for 2 years and for the most part acts the same as all s9's. Loud and hot.For at least the past 4 years all BTC miners have been the same - LOUD. The reason is simple - they suck a lot of power and need the high speed fans to give enough pressure to force air through them for cooling.The only way you can throttle them down is through reducing the power they draw by running the miner at lower THs via <truncated> Simply slowing down the fans or trying to replace them with quieter ones only results in the miners overheating.

### Reply 2:
Yeah you needed to get a used s9i they can be under clocked and or use custom firmware.

### Reply 3:
Sorry, false, S9 4 years ago ok but no S9K / S9SE , is probably running by 10nm chips ...So, control fan is possible and easy ! you just need SSH acces (please shearch how to) , goind to config folder, open cgminer.conf , and, add two line :""api-listen"" : true,""api-network"" : true,""api-groups"" : <truncated> : <truncated> : <truncated> : ""45"", (so, change 45 by 0-100 you want)

### Reply 4:
I can't even under clock it, in my understanding this would need custom firmware, and that unfortunately doesn't exist yet (apparently).

### Reply 5:
You can use the firmware that posted from that thread but the problem is it only supports May 2019 firmware or older.However, if you can request a program recovery from Bitmain that you can use for SD card flashing maybe you can downgrade your s9SE miner then use the firmware that provided from that thread.According to this ""S17/S17Pro/S9 SE/S9k/Z11 control board program recovery (SD card flashing with customized PW)""You can contact Bitmain to request for program recovery image which I think will help to downgrade your s9se miner.

### Reply 6:
I ran into those lines of code before but it's all for the S9, not S9SE i even managed to find a thread where you say you were able to SSH S9SE, can you help?post #17<link> also considering trying this although it doesn't claim to support S9SE:<link> found this, seems like a work in progress ? <link>

### Reply 7:
Well i've opened a ticket on bitmain requesting May 2019 firmware. They may be a little bit confused since antminer s9se was released in July 2019

### Reply 8:
OMG THANK YOU !!! that really did it i think we can LOCK this thread and move the discussion to <link>

### Reply 9:
There is a way to control the fans on the S9e, apparently, Bitmain made it a little bit harder to do than it was on the older S9 versions, I however and by chance managed to find a way to do so.Remember that Antminer S9e has a max PCB temperature of 85 as labeled by Bitmain,and it will stop hashing at 80, so reducing the fans speed might actually damage the miner if the room where it's located is not cool enough, to overcome the heat issue, you can set the miner to run at Low Power Mode (LPM), it's also a hidden function that can be revealed by following the steps in same fan control guide.

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16405,"Date: 2023-01
Topic: Miners running Off grid/Solar
### Original post:
I have searched and found not many recent posts about successfully running miners of Solar/off grid and wondered if others have found a better way to manage turning miners on and off as required.I currently turn the miners on and off via timers but this is a brute force way of handling the use of power.I first tested just turning off the router thinking the miner would go dormant - nope - still chugs away at full power.Does anyone use modified firmware to turn miners on or off? Any help appreciated.My mining setup consisting of 2 x S9's and a Hydro modified S19 (140TH total) running from my Off grid Electrical system that Powers my Shed and Barn. I still have enough power available to run power tools etc so I can still add a few more miners and just turn some off if I need the power elsewhere.It was going to be Expensive to wire the Shed and Barn to the grid, so I opted to go Off Grid.I have built the system up from new and second hand parts.40 x 250w (10Kw) Panels second hand feeding into 2 x Growatt Inverters (10KW) to 280 AHr 48v LifePo4 Batteries.More batteries are ordered but post is slow.

### Reply 1:
You can turn off your miners using apps on smartphone like hiveOS application or through the browser, I do this a lot without getting closer to my mining rigs. If you off your router the miner will still keep running but with less power consumption compared to when the miner is fully working with the internet connection. I prefer having extra juice available when mining with solar panels so that my battery bank can also recharge fully for night use, I hope you have some calculator? I am not sure that running 2 S9 and 1 S19 with extra asic miners on a 10kw is a good idea. I might be wrong but you should do some calculations first.

### Reply 2:
Tesla is currently running a special of which I was just notified. Those using referrals to purchase a Tesla solar system are currently eligible to receive double the reward credits, which can be used for things like discounts on Tesla products or free supercharging. If interested or youd like a referral code, feel free to reach out to me, as I was given referral codes when installing my Tesla Powerwall for my house.

### Reply 3:
My optimum result would be for an Automated turn on/off by time/r option in firmware - will check if HiveOS can help. I have just test loaded DJayOS into an S9 as the old stock firmware was running the unit a bit hot and causing lots of reboots on the hot days. I now have the S9J under clocked running at a reliable 10TH at around 1KW for our 10 hours of daylight. The S19 runs at 3K3 watts so in total I have 5300 watts of miners running and <truncated> using only 250W. So I don't have an issue is running 6000 watts on a 10,000 watt system. I feel I can squeeze 2Kw more out of the system as the panels still fully charge the batteries by 10 am.More panels and inverters are planned if I can find them cheap enough.

### Reply 4:
The more load you add to your solar energy build the longer your battery bank takes to fully charge, also you should know that it won't always be a sunny day, there are rainy seasons as well, make sure you have enough power left to charge your battery bank per day while mining with all the rigs at the same time. My solar battery bank started misbehaving when I add to much load, I meant the battery bank wasnt lasting as it supposed to until I remove a rig, extra power is very important, for buffering sake and keeping the full battery at full.

### Reply 5:
I fancied doing this from my campervan. A bigger problem for me would be the internet connection. I could use public WiFi, or tether through my 'phone, but I suspect that these nay be unreliable unless they were monitored frequently.

### Reply 6:
I don't know why but my opinion is maybe the reason only a few people that successfully run miners using Solar is because the Solar panel still very expensive for running multiple miners and when the night comes you need a battery or keep using on-grid electric. Solar panel is for investment in the long-run and most people still okay with on-grid electricity. In my country, there is a dedicated modem that connects to local provide so its like Phone Tethering but I thinks is more reliable

### Reply 7:
What about bitcoin mining in outer space? Could you piggyback mining software on communication satellite computers? Or maybe get Richard Branson to launch a communication satellite filled with ASICs for bitcoin mining. Plenty of solar energy to run computers. No cooling problem, either. What would need to be the minimum price of a bitcoin to make it cost effective to operate a satellite for bitcoin mining? Satellites already communicate internet traffic.

### Reply 8:
... miners have a habit of not working at negative temperatures ...

### Reply 9:
I use a decentralized setup: Some few solar panels at remote locations on my land. A Raspberry with GSM-connect<rest of thread truncated>
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10905,"Date: 2020-11
Topic: ANTMINER S3 Discussion and Support Thread.
### Original post:
~~~~~~~~~~~~~

### Reply 1:
Bitmain - can you please inform p2pool users weather these are compatible before they buy? Thanks.

### Reply 2:
Is p2pool supported?

### Reply 3:
You had mentioned prior that previous buyers of Antminer S1 and S2 miners would be able to upgrade. Can you provide any details on the upgrade pricing/process?

### Reply 4:
I would definitely like an answer regarding p2pool support before I pick up any.

### Reply 5:
I would also like info about p2pool compatibility.

### Reply 6:
Bitmain - there are many people who have bought your hardware only to find that they are unable to use it <truncated> with p2pool. The S1's needed a fix by Kano (cgminer dev & demi-god) to operate optimally, the S2's were also incompatible - although I believe Kano is again working on trying to fix this. It is my understanding that you were also sent all the relevant information needed to provide a fix for the S2 by forum user ""PatMan"" to make it compatible with p2pool a while ago - but as yet there has been no news.Now that you have released the S3, p2pool users are wary of buying them due to the previous problems with using them on p2pool. Unfortunately, the p2pool dev (forrestv) has been inactive for the last 10+ months with p2pool, leaving p2pool users with a very limited choice of available hardware that can be used with the software. It would be greatly appreciated by both p2pool users and the Bitcoin network in general if you could not only ensure that your hardware is p2pool compatible, but also advise them if your hardware was usable with p2pool before they buy it - thus saving disappointment and frustration at not being able to use your hardware with the only truly decent<rest of post truncated>

### Reply 7:
How can you defend the price of BTC 0.75 ?I used <link> and it was impossible to reach ROI.

### Reply 8:
speculation on BTC price increase!

### Reply 9:
+1 to this!!Unless Bitmain can provide some info on p2pool compatibility before they go on sale - my satoshi will be going in the Spondoolies direction - they provided a fix in their firmware for p2pool within days of users requesting it.COME ON BITMAIN - SOME INFO PLEASE?!!

### Reply 10:
What time do these go on sale?

### Reply 11:
For P2pool lovers, the 2nd floor of this thread has been updated. Wish the answer make you satisfied, or at least enough for you make a decision. We will make a great contribution to the p2pool chain very soon.

### Reply 12:
in 14 minutes.

### Reply 13:
I just drank a redbull....because I was about to pass out from working all night......but I'm not missing this for anything!

### Reply 14:
will there be p2pool support please?thank you for your prompt response. appreciated.

### Reply 15:
Thank you Bitmain - this is very good & promising news indeed!!

### Reply 16:
Excellent!Edit: Just purchased 2 (MOQ is 2 for anyone who's ordering).

### Reply 17:
And the website is down....

### Reply 18:
It begins at 10PM Beijing time.

### Reply 19:
Was able to get on and order 3

### Reply 20:
i'm in for one two, now, can you just speed up the bitcoin blockchain so that these don't sell out before I can get my btc to you lol

### Reply 21:
YAY ! Ordered 6 units ! Thanks Bitmain !!!

### Reply 22:
Two ordered, hope for fast delivery after release. Thank you Bitmain, my life as miner starts to be interesting again

### Reply 23:
good one. I have two on the way. Hoping for the btc price to move up to 700 it is at 623 right now.

### Reply 24:
bought 2

### Reply 25:
I have updated the profitability calculator with the new numbers.After the next 3 difficulty target's I expect network difficulty to be 10%. Then again if btc value goes up who knows.This link below is for those who may wish to view the other tabs in the document and make a copy for their own use.<link>

### Reply 26:
I am interested in learning more about the s1 and s2 upgrade kits as well.

### Reply 27:
Interested as well.Will you have an upgrade kit for the S1 and will there be a minimum order requirement for those too?

### Reply 28:
On average, how long does it take for the to receive the payment after sending?

### Reply 29:
10 minutes or so after I sent mine I saw that it was confirmed on their end.

### Reply 30:
I've placed orders with them on two separate occasions and so far they have usually taken about 30-40 min to get confirmed.

### Reply 31:
Alright I just hope I get in on the first batch.. Its been about 30-40 minutes, 3 confirmations, and still saying unpaid. Hopefuly it will catch up here in the next couple of minutes..

### Reply 32:
My BTC arrived and have been confirmed in the wallet, but the order never clamied to recieve them and cancelled my order request. How do i get my order or BTC back??Horrible first experience with Bitmain.. <link>

### Reply 33:
i suggest it's probably a good idea to get in touch with bitmain directly before placing this here.

<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S2"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S3"",
    ""hardware_is_owned"": false
  }
]"
22936,"Date: 2019-05
Topic: Antminer S9 never start
### Original post:
You need to provide more details:Is the miner new or used?Where did you get the miner - direct from Bitmain or a reseller?What kind of PSU are you using?Screen shot of the GUI cgminer status page.If the PSU is a known good one and miner is new then contact Bitmain or the reseller.If the miner was bought as used - you may have bought a dud. Contact whomever you bought it from.

### Reply 1:
Hello,My Antminer s9 don't want to start, I plug on for 30 minutes several times, reset a lot of times too but any of red and green light turn on.Ethernet light work. But only one of 3 hashing board have the red light.Please help.(Sorry for english)Thank you.Here is my kernel logs :Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #82 SMP PREEMPT Tue May 16 19:49:53 CST 2017[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.00<rest of post truncated>

### Reply 2:
When you paste kernel logs use the [code][/code] tags to insert your code, so it looks like this:Code:(log dump)Please edit your post and do this as soon as possible.

### Reply 3:
as far your problem goes, we need MORE details , nobody without a crystal ball will be able to tell you what's wrong with your miner with this little information you provided.follow this example > <link>

### Reply 4:
According to your errorCode:Check chain[5] PIC fw <truncated> PIC need restore ...After restore: chain[5] PIC fw version=0x00It looks like you have corrupted program because the PIC fw version result is 0x00 possible your hashboard program is corrupted or your Control board program is corrupted. If you already reset it through browser I suggest you to try hard reset the miner it sometimes solve this kind of issue if you don't know how to do it follow the guide from here How to reset miner to factory settings follow the number 1 and 3 method and ignore the 2nd method. If it doesn't work you can try to flash the firmware with this <truncated> or this one <truncated> it can be also fix this issue. Just don't flash it with 2019 firmware because this firmware is SSH disabled.

### Reply 5:
Thank you all for reply.Hello,I bought the miner a week ago, usedI got it from ""coinminer"".I use the offical bitmain psu, I think. 220V<link> miner worked fine when I received. I don't understand.Hello,I tried the 1 and 2nd method and I will try the 3 method tomorow.Ok thank you, I will do this tomorow tooSo you think it's just a program, nothing broken ?Ok thank you, I did this.

### Reply 6:
I'm not sure but this is a common issue that I heard and solve by flashing or resetting the miner and you need to do it first before you going to touch the hardware. If you are done flashing the unit and the issue still not solve the final software solution that I know is this one Flashing hash board through Pickit 3.If still doesn't work try the hashboard on the other antminer s9 (if you have extra miner) if the error is the same as the logs above you need to replace the hashboard.

### Reply 7:
Just use it with what you have if you are satisfied with it, but don't use Bitmain's firmware from 2019, it will lock you to theirs.

### Reply 8:
Hello,I'm sorry because I could not do something with my antminer before today.Anyway, I just tried to restore with the ""IP report"" and that worked ! Thank you really much !So now, should I install a new firmware ?Thank you again.

### Reply 9:
I'm glad that it work now you learn something from me if you receive error again you can apply this method again. This ""PIC fw version=0x00"" it should be PIC fw version=0x03 so there's a problem related to software but it is not always a software problem sometimes the board have a hardware issues like some capacitor in the hashboard is shorted.Now monitor the miner if it's running fine without any issue then don't flash it with other firmware but if you still receive some errors try to flash with the firmware that I suggested above.

### Reply 10:
Hi, I'm sorry, I don't do anything I just plug off the miner and now I re-plug it and I got this:Code:Check chain[5] PIC fw <truncated> PIC need restore ...Error of set PIC FLASH addr: addr_H=3(0) addr_L=0(0) on Chain[5]Error of set PIC FLASH addr: addr_H=3(0) add<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashing board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  }
]"
23235,"Date: 2020-04
Topic: aisen A1 have problem hashrate
### Original post:
I have an aisen A1 25th/s that works for 13 minutes and the hash rate goes up to 25 th/s and suddenly the hash rate goes down to 0 .Does anyone know the solution to my problem?

### Reply 1:
It seems that their website is currently suspended according to their website ""aisenminer.top""Can you try to mine on other pool it might be a pool issueCheck this list below- <link> switch to <link> pool

### Reply 2:
Is that from the unpopular ""Love Core"" manufacturer? this is one reason why people should stop buying those types of gears, they have simply modified versions of either Inno, avalon or bitmian but you don't know which one is which, and they have no support, probably not even a web page for that matter, and the materials you may find online regarding such miners are little to nothing.But judging by the common issues of other gears, usually, this problem is caused by high temperature, what happens is that the miner starts cool enough to hash at full speed, and then due to bad ventilation or anything else, they get way too hot, the miner tries to protect itself and drops voltage/frequency aka going to lower power mode which leads to less hash rate, cools down for a little but still even with that drop it's not cool enough so it shuts-down to prevent the dashboards from frying.Another possible cause is also heat, but not the miner itself that heats up, the PSU, gets hot, fails to deliver enough power and problems start, other things like your router not liking the ongoing connections with the pool, it may drop outgoing/incoming packets, the pool doesn't like your miner for whatever rea<rest of post truncated>

","[
  {
    ""hardware_name"": ""aisen A1 25th/s"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""Inno""
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""avalon""
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""bitmian""
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""PSU""
  },
  {
    ""hardware_is_owned"": false,
    ""hardware_name"": ""router""
  }
]"
13832,"Date: 2023-06
Topic: Is it possible to recover satoshis from a 10 plus year old account on CGMINER?
### Original post:
Hello everyone, I mined some satoshis more than 10 years ago, and just now I found the HD with the corresponding cgminer folder. I never messed with bitcoins again, and I don't even remember what the process was like. Is there still a possibility to recover these satoshis?If so, some instruction would be most welcome.Thanks in advance.P.S. The software version at that time was 3.7.2 for Windows.

### Reply 1:
recovering coins usually involves wallets and wallet.dat filesthe cgminer folder could contain a pool name that you used but it is very unlikely the pool held your coins for 10 years.good luck.

### Reply 2:
Do you still remember on what pool do you mine on that time?Or if you are using a pool that directly send your mine coins to your BTC wallet then you must find the wallet and focus on that thing because cgminer is just a software for mining it doesn't contain any coins.Try to look for Electrum or Bitcoin-qt you can use everything search tool or your laptop/pc built-in search to find these wallets.

### Reply 3:
Cgiminer folder isn't going to help you recover your lost coins, you are going to need the wallet files, try to find the wallet.dat on all drivers, search forCode:*.datin C, D or whatever drives/partitions you have on that PC, assuming you don't recall using a different PC for the wallet, it should be there somewhere on your PC.Also, don't respond to any PMs, especially by newbie accounts trying to help you out, they are most likely trying to steal your coins.

### Reply 4:
Interesting know that there are some ways to get back the lost bitcoins. I assume this is only possible when you have that particular PC on which the mining happened and *.dat file is stored? If yes, then it means that particular PC and dat file has got coded connection which may not work on the other PC if downloaded or transferred. If no, then why is that so and through current advances why is it still that much hard to do it. OR is it possible to get the bitcoins back even if you have *.dat file from some other device but now want to get back the bitcoins from it. How this file works and what is the information that is stored in it which makes it so helpful while recovering the bitcoins?

### Reply 5:
The PC or miner software isn't connected to the wallet, if you have the wallet files you can use it on any operating system that it supports, of course, most often that file will be encrypted and you will need a password to decrypt it so you can access the coins, but finding that wallet file is the first step to any ""hope"", if you have it, you have a good chance of remembering or even brute-forcing your way in, if you don't have it, your chances of meeting your coins again are 0.

### Reply 6:
Eh, my trust on the paper wallets followed by multiple new generated address is rising day by day as I learn the complications in storing your data on any device or keeping the coins on hardware's. @OP, your story is now getting similar to the UK guy who appealed in the court for digging out his old computer hard drive which is now buried under hundreds and thousand ton of waste in the wasteland. Because if you are not going to have the access to those file or data then it is already proven its useless to run behind that. It is really dangerous to have the data on anything that is electronic. It can get fried, corrupted, or lost anytime without prior notice. Imagine working on computer peacefully and suddenly there is high electricity voltage frying the HDD and losing that .dat* file with it. There goes the bitcoin. I think one should mine the bitcoins ----> transfer to paper wallet --> Lock it away. The best course of action so far.

### Reply 7:
Or you could learn about automatic, reliable and safe backups, and raid data storage ...Anyway, that idiot in the UK dug up his computer and apparently it was only BitCH coin so worth nothing like what he paid to dig it up - lol... which also doesn't really make a lot sense, since the BitCH keys=the BTC keys ... so he must have thrown it away after BitCH was created.

### Reply 8:
If you both are talking about James Howells who allegedly lost 8,000 BTC in a hard drive he threw away, I found no reliable source saying he found the hard driveAs for thisNot sure why you assume it was ""after"", if he had any BTC the belongs to the PKs he owns, he would have gotten the same amount in all the forks, so if he threw it when it had BTC in it before the fork date then it would have both BTC and the other forks, if the BTC was funded after the fork, he would found only BTC, the only way he would only find forked coins and not BTC is if he funded the wallet after the fork, and lost it after the fork, which doesn't make sense at all.We could be talking about different folks here, but James Howells claims he lost his hard drive back in 2013, which means if he found it recently, it would h<rest of thread truncated>
","[
  {
    ""hardware_name"": ""HD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""laptop/pc"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""old computer hard drive"",
    ""hardware_is_owned"": true
  }
]"
10856,"Date: 2019-11
Topic: Innosilicon t3 50 arrived.
### Original post:
I set it to balanced ++. It seems to do 43th edit 39th. Watts are at kwatts are at 148.44. I will check in an hour to get a reading. 7:34 pm to 8:34 pm. In theory I will use 2.3 to 2.4kwatts so reading should be 150.84 at 8:34pm

### Reply 1:
Little over 2.7kw sounds pretty good. Keep me posted.

### Reply 2:
Looks like it settled in at 43 th and does 63.3 watts a thThis is on balanced++ setting.Of course Inno firmware set fans to 100% and gear is around 59c a board.Since these go up to Clifton NJ the loud noise is okay but I would prefer 90% not 100%This are pretty loud I do not think they will please a wife or girlfriend with noise factor.

### Reply 3:
What's the hashrate on factory and performance? Is it on spec?

### Reply 4:
It was not set to factory when I started it it was set to performance.I did not run it long enough to give a fair number. But it was 52thI am pretty happy with efficiency I will run it till I go to sleep. It is loud enough that I wont sleep well.I will test factory in the morning and performance in the afternoon.I was annoyed it came late but if I can get 45 or 46 th on factory - -48:on factory and 52 on performance .Okay just fired it up and set to <truncated> you inthe gui looks like my t3 39 and like my t2 24I use an hourly kwatt meter more accurate then the instant versions but you need to wait for 2 hours to get a decent measurementI estimate it will be about 5.4 kwatts maybe more for the 2 hours.I will photo the meter and post once it starts to mine and finishes tuning.These take about an hour to fireup fully.reads 1165.761hr should read 1168.46 actual =? 1169 which is1169.001165.76 3.24 or 3240 watts doing 48 th this is 67.5 watts a th on factory not that good.the gear is cycling which is a no no I will see if it stopsI suspect that factory is not a good setting for it.the meter is at 1169 kwatts at 11 am we are doing 48th on factoryI did have a lot of recycling for about 30<rest of post truncated>

### Reply 5:
These numbers are not bad to be honest, the T3 50th goes for 2000$ in china from resellers, the T17-40th on the other hand goes for about 1800$ , the latter does about 58 watts a TH.cost per thT3 = 40$T17= 45$40th*5$ = T17 is 200$ more expensiveassuming power cost is 6 cents per kw:40TH on the T3 cost = 3.91 $ / day40TH on the T17 cost= 3.34 $ /daya difference of 0.57$ a day , so to ROI that 200$ price difference in gears price we do the following200/0.57 = 350 days almost a whole yearlet's see how it stands against S17-53 th which goes for 3500$ in china, it does 45w per thcost per thT3= 40$S17 =66$difference in 50th = 1300$assuming power cost is 6 cents per kw:50TH on the T3 cost = 4.89 $ / day50TH on the S17 cost= 3.23 $ /daya difference of 1.66$ a day , so to ROI that 1300$ price difference in gears price we do the following1300/1.66 = 783 days or 26 months !!Honestly, with the numbers ,it makes every sense to get the T3 50th for 2000$ than getting any other gear from bitmain.These numbers are based on the average price of ""buy now"" from Chinese resllers, buying the gears directly from the manufacturer will be a lot of different, but the waiting time will be different too.

### Reply 6:
Late product earns less. Philip's comment on returns is incorrect, technically we do not allow returns after an order is submitted to manufacturer, though we treat any issues case by case.Hopefully Philip can find time to double the FW version is latest and we can hope for more efficiency gain.

### Reply 7:
I think if your really read everything in that post you wouldn't be making such a statement, I clearly mentionedWhich is the proper way of doing things, I also don't understand how is it logical to compare a gear which you can get in 4-7 days to a gear that will only ship in late November and will probably only be received in December.if you can get a T17 now for 1145$ then there is no math needed, go for it, but if you have to wait till December, a gear like the one in review will be at your door step in just a couple of days, and you will have at least 65 days lead , that is almost 750$ of profit ( before the power bill) , also all bitmain gears are sold out at the moment, so the earliest batch will probably be next year January. The math is really simple here, and it all depends on how much do you have to pay for the gear, I personally don't like per-orders of any kind, I base my business plans on the current situation and don't like to have my BTC sitting in a manufacturer wallet for 3-5 months to get the gear, I either pay more now or just hold BTC, but it's different for everyone.

### Reply 8:
My T3-50's are up and after a couple of hours are running on default settings @ 50T with +/- fluctuations of only 1%They are in a datacenter though so probably have better cooling available to them than where Phil has his.

### Reply 9:
Heh, I have no skin in the game with any manufacturer, I've had good deliverie<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Innosilicon t3 50"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17-40th"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17-53 th"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T3-50"",
    ""hardware_is_owned"": true
  }
]"
10890,"Date: 2020-06
Topic: Antminer S19 95T
### Original post:
Hello everyonefinally Bitmain Ship S19 95t Model In Market S19 pro 110t Coming Soon Also

### Reply 1:
Are the intake and exhaust fans the same size as S17, T17 etc? The dimensions on Bitmain website suggests that these may use a slightly larger fan.

### Reply 2:
Hello,I have doubt, and appreciate if you guys can clear it.Nowadays, new miners come with attached PSU, and require two power cables to turn on.Is there a specific order for turning on the power for the cables, or it doesn't matter, so just turn on the power in any order you like?Suppose I connect the two cables to two separate electric sockets on the wall. Which one should I turn on, or it doesn't matter?Thanks

### Reply 3:
Guys guys, read the manual: <link> I do agree with you

### Reply 4:
Thanks @favebook & @HagssFINAccording to S19 Manual it says:The equipment has two power inputs, only by connecting those two power supply sockets simultaneously can theequipment run. When the equipment is powered off, be sure to power off all power inputs.

### Reply 5:
the t19 and s19 use this fan<link> t17 and s17 use this fan<link> would not assume them to be the same.But they could be.

### Reply 6:
It does not matter, just be sure to connect second one asap. I usually connect my lower one first then top one. I am not really sure what machine does when only one cable is plugged in, but I assume it turns on PSU and Control board as well as PSU fans and waits for second cable so it can power Hashboards, but I'd rather not test it too much.

","[
  {
    ""hardware_name"": ""Antminer S19 95T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19 Pro 110T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Intake and exhaust fans for S17, T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Intake and exhaust fans for S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU for new miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T19 fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19 fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17 fan"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17 fan"",
    ""hardware_is_owned"": false
  }
]"
23305,"Date: 2020-07
Topic: Need help with Antminer S17E repair
### Original post:
Hi I have two Antminer S17E hashcards that are no longer working. Does anyone know how to fix these? Is there anywhere in the US that i could get these repaired? I am very sad and need them to work again.

### Reply 1:
How did you know that your two hashboard are no longer working?Can add some more details about the issue? Copy the kernel logs from the miner and paste it here and don't forget to use # code before you post the kernel logs here. For repair center for Antminer Bitmain has a repair center on CA you can read this link below.- <link> you can check this repair guide below.- <link>

### Reply 2:
You should define what does ""no longer working"" actually refer to? are they burnt? are they giving you a temp-sensor error? 0 asic? less than the total number of asics they should show?There are plenty things that could go wrong with these low-quality hashboards, some will be easy to fix, some are just not worth it, so please go ahead and explain in details what is exactly wrong with these boards and I will be glad to help you.

","[
  {
    ""hardware_name"": ""Antminer S17E hashcards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": false
  }
]"
23156,"Date: 2019-12
Topic: How to wire your s17's and t17's diy
### Original post:
Okay we ordered quite a few of them. About 12 s17's or t17sI purchased1 of these<link> of these<link> of these<link> built 10 sets.14 awg will handle 15amps or 12 x 240 = 2880 wattsA set for one machine was aboutl6-30p = 3.00c19 to c20 = 3.50 and 5 extra pieces2x c13 to c20 = 4.50total 11.00 add a little for tax and shipping10 x 12 = 120 for 10 s17's or t17'snote do not use this <truncated> should be fine for s17 and t17 as they draw less power.I also built some adapters for this<link> used l6-30p and 6-20r with a 1 foot piece of 12awg power wire.I got 6 smartpower units at fairly good price(200 each) they will cover 1 s17 each.

### Reply 1:
why not tho ? below is the power consumption for each models17+ > 2920wS17e > 2880wt17e > 2915wt17+ > 3200wThe only model that might not be suitable for this set-up is the t17+ , in fact 3200w is only 13.3amp on 240v but I wouldn't do that , also what I don't understand is the use of the ""Splitter"", you are kind of causing unnecessary bottleneck here.

### Reply 2:
price is low and the clifton setup has 30amp circuits lots of them.running two s17s on a 30amp circuit will pop breaker.so we only run one.i do not have to change the l6-30r. i put the l6-30p to c19 to the splitter cost is only 12 bucks a miner.as i have lots of spare l6-30r to fill. we will need to put in some 20 amp circuits.

### Reply 3:
Love the DIY Phil keep it up. Just for clarity sake it might be nice to toss in a picture of a completed unit. I was trying to sort out what's what following the links and, obviously not running these it took me a few minutes to figure it out. Could you not overcome the warning for higher power machines by stepping up to a higher gauge power cord and/or splitter as needed?

### Reply 4:
yes except I won't buy the 3000 watts units. I wanted to do this as cheaply and safe as possible.Also my goal is to be s17 pro and nothing else (won't happen but it is a nice goal).I will photo the build.fully assembled about 9 feet longthree pieces about 12 usd totalattached to an l6-30r circuitready to test the next s17pro due soonThese wires are 15amp rated so 12 amps 24/7/365I have a solid 237-243 volts in my garage which is :3300/237 = 13.924 amps3200/237 = 13.502 amps3100/237 = 13.080 amps3000/237 = 12.658 amps2900/237 = 12.236 amps I could run anything under 2900 watts and be okay with this wire setup in my garage.however in clifton2900/217 = 13.364 amps2800/217 = 12.903 amps2700/217 = 12.442 ampsI need to be under 2700 watts.And we still have the occasional low voltage valley of 187-190 volts. Yet to get a good response from power company on this issue.However almost all the gear can deal with this for as much as a 30 minute drop in voltage.once I factor 190 voltsI get2400/190 = 12.63 amps2300/190 = 12.105 ampsmakes the s17 pros more attractive as they can ride out the low voltages without melting the wires.

### Reply 5:
Congrats on the DIY build.Out of curiosity, do you have a dedicated <truncated> If so, are you getting 217v from a tap adjusted traditional 208v 3phase transformer (or bank of single phase)?I have no clue if your utility provider would allow for it but if you're constantly getting 217v from undervoltage it may make sense to ask them if they can adjust your tranfsormer tap(s) and bring up the secondary voltage.I've ran several Bitmain PSUs (not the S17/T17) and they're workhorses next to some of the other stuff I've dealt with. Currently running a dying breed batch of APW3++ at 277v without a hiccup (please do not attempt this; I just had a few left overs with little resale value so I'm using them under very strict <truncated> this being said, I've always had issues with Bitmain (and other) PSUs when they drop into that 140-200VAC limbo. I would certainly hope that your utility gets its stuff together as I'd hate to see such expensive equipment suffer.Just food for thought.Best of luck mining!

### Reply 6:
we stay in a 217-227 power range 98% of the time. Our problem is very likely being caused by verizon's back up service for wall street stock exchange.They run 2 tests of the emergency back up for all of wall street they do these 15 minute tests 2x a month. We drop down to 190 volts 2x a month for under 15 minutes.We are in a very large industrial area. with a lot of high draw companies.The ware house has a 10000 square foot freezer yep fucking huge it is set to -20 f. It has the same issue 2x a month. when verizon tests backup for wall street.We are thinking that we shut the freezer down for 20 minutes 2x a month when the issue occurs. We will work on this.We have 3 phase power and we label all circuits A+B or A+C or B+C this balances load.Warehouse owner may 2x the space and add a new transformer.A year from today we could have 400kwatts to manage vs the 180 we have now.

### Reply 7:
I'm not an electrician nor an electrical engineer but have had to learn way more than necessary about<rest of thread truncated>
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    ""hardware_name"": ""Bitmain PSUs"",
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    ""hardware_name"": ""APW3++"",
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16448,"Date: 2023-03
Topic: I want to Mine Bitcoin
### Original post:
I want to mine Bitcoin than what will be the Best Mining Machines or Graphics card that I can buy for future cause I am just trying to save Money and but either Mining machines or Masternodes. Masternodes are also too much expensive too.

### Reply 1:
1st read <link> mainly point-3In short only ASIC-based miners can mine BTC

### Reply 2:
You can not mine bitcoin with graphics card profitably, gone are the days, the mining difficulty has increased more and more. If you want to mine bitcoin, you need ASIC.Before going into mining, make sure that you do the profitability calculation to make sure that you will mine profitably, especially by checking the electricity the mining machine and other equipments you want to buy will consume per certain time period and the cost of electricity in your location, comparing it with the expected reward from the mining pool that you joined. Mining equipments cost will also be calculated along.

### Reply 3:
Having a masternode will not mine Bitcoin like other said only ASIC based units can mine BTC.Masternodes are POS and you can only generates coin through staking not mining.If you are looking for cheap ASIC units I suggest you check canaan.io you can also buy miner in Bitmain but it's a bit expensive.

### Reply 4:
you can't Mine bitcoin with a graphics card, GPU price is indicated to decline but there is not much coin left to be profitable as ETH is currently PoS. and running masternode is very expensive since you need to lock huge amounts of coin first, and then the cost of server cost month is more than 100$ since masternode always need a better VPS Spec

### Reply 5:
I think the best miner I can recommend is Bitmain Antminer KA3, iBElink BM-K3, Bitmain Antminer HS3, and others.These are just a few in my opinion that can help you start mining here in the crypto space. It's just important that you avoid buying bitcoin mining machines if you don't want to regret it later.Then I don't know if the grahics card can mine? as far as I know it is not possible.

### Reply 6:
You shouldn't be mining bitcoin right now; it was more profitable to do so a few years ago. Instead, you should invest in bitcoin by purchasing it when its price is low and holding onto it until its value increases later.Right now, it's too late to mine bitcoin.

### Reply 7:
No it is NOT too late to mine BTC -- provided you have access to very cheap power. The only problem is that most folks have power that costs too much to do it profitably. Power costs have always been the limiting factor so nothing new there but until BTC prices go up it certainly has become more of an issue for most folks.

### Reply 8:
Other than the cheap electricity mentioned above, you can also wait until the difficulty becomes much lower if you really want to mine and make a profit out of it. The bad news is, nobody knows just how much lower it will go, or if it will ever be at all. I've seen some news talking about miners selling all of their BTC just to keep mining, but it's hard to know how much is the truth on that report since we don't see any change in difficulty yet.There are many tools that you can use to check them out. I suggest visiting the altcoin board for more details. For example, whattomine is a website that you can use to see which coin is mineable and how much profit you can earn daily if you use GPU A or B. While the cost is arguably lower, if you want to make a profit quickly, maybe you should look for other alternatives. CMIIW.

### Reply 9:
Mate the revenue of mining profits is directly depends on the rate of electricity and your investment because of now a days Asic machines that using SHA256 algo taking between 2500 to 3000 watts from 60th to 100th so if you have cheap electricity and a good amount i suggest to buy s19 and make daily profits .

### Reply 10:
Actually this could still be used as a good time to mine, even though it's a little late and basically it would have been nice to do mining a few years ago, but now it's still said to be a good opportunity to mine and make these mining products to be used as assets. investment later. To get maximum results and benefits, you need to pay attention in terms of electricity costs, if costs are still very low in your area, then this will still be a good time to mine, once again we say that this is not too late to mine Bitcoin .

### Reply 11:
The recent surge in Bitcoin prices is definitely a positive for bitcoin mining. Miners will usually be profitable when the price of Bitcoin increases. For Bitcoin mining a miner needs to know some things well. A miner in particular will need a mining hardware for mining which we commonly know as ASICs. Nowadays various types of ASICs can be found. These devices are very necessary and expensive for mining. However, the cost will be slightly lower for those who use the entry-level components. Before Mining you need to keep some things in mind. Electricity is an <rest of thread truncated>
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23348,"Date: 2020-11
Topic: Chain 1 only find 6 asic, will power off hash board 1
### Original post:
Hashboard does not power on unless it reads all chips from board. You are experiencing same problem as almost every single person who bought antminer 17 series (including me). I've had units for for more than year and then that happens.What you are experiencing is dead hashboard or faulty PSU. You could try different PSU but I doubt it is the problem. In some cases putting miner horizontally on one or other side fixes the problem temporarily, but only permanent solution is to fix the faulty hashboard(s) or RMA the unit. I decided to RMA my S17+ as it started losing one hashboard like your unit and then after a week or two, it lost all 3 hashboards. From time to time it pops up and works fine with 1 or 2 hashboards but that is not how it is designed to work.I'd suggest you to open a ticket at bitmain support and then ask for RMA. Repairs are not that expensive from my experience, but shipping might be due to human virus spreading around and usual prices are nowhere near cheap either.

### Reply 1:
If you have another PSU to try, then that's a good/easy thing to try, but I don't think the test you did indicates a PSU problem. If I'm understanding what you did correctly, you originally had board 1 connected to chain 1, then you swapped the control cables so that board one is connected to chain 2. The problem stayed with the board, suggesting that the issue is in that board. Although it could just be that that board just happens to be more sensitive to a PSU problem than the others.Maybe try running one hashboard at a time by disconnecting the control cables for the other boards? I'm guessing the same board will fail.

### Reply 2:
Hey guys.On my t17 42 TH, it'll run just fine for 1 year, sometimes I've got 42 TH sometimes after one reboot 28TH which means 1 board is gone! I Checked PSU and control board and also check voltages on 3 cable of each board and all was ok so problem is seems not in <truncated> Chain[1]: find 6 asic, times 0=>Chain 1 only find 6 asic, will power off hash board 1Here is usefull log section as you can see on Chain1 only 6 asic founded and then power it <truncated> Chain[0]: find 30 asic, times <truncated> Chain[1]: find 6 asic, times <truncated> Chain[1]: find 6 asic, times <truncated> Chain[1]: find 6 asic, times <truncated> Chain 1 only find 6 asic, will power off hash board <truncated> Chain[2]: find 30 asic, times 0What should I do now? no warranty at the time.Thanks in advance.

### Reply 3:
If mine ran for a year I would be happy enough to throw it away, this is a good record and above average <truncated> Chain[1]: find 6 asic, times 2the heatsink on chip no.7 has probably lost contact, the solder paste must have gone bad, this is pretty normal with all of these gears, at least 30% of hash boards die this way.Fixing this problem is expensive, there is nothing really you can do, just remove that hash board and mine with the 2 good hash boards, there are a few things that you can try, most of them are mentioned in this topic and this topic.Try them out, if nothing works, go ahead and remove that board since it actually slows down the boot time and might make your miner reboot every once in a while, which is something you don't want.

### Reply 4:
But I do another test :Changed the control unit cable and it changed the error now to hashboard 2! So it means I have weak amps on one of output (the faulty middle one) right? I will try to find another PSU to test and will post the result here!<link> <truncated> 1 only find 6 asic, will power off hash board 1.What I <truncated> 2 only find 6 asic, will power off hash board 2.I think it may be power issue if you see the logs it detects 6 unit and not enough power to boot other asics? 2 is faulty I think however it has volatages it may not produce enough amps to power all board asics.

### Reply 5:
This confirms my theory, even more, I think you are confusing yourself, the miner only unders 1,2,3 which is the 18pins attached to the control board, clear? now that we got this out of the way, you should understand that since:Chain 1 was in location 1 = chain 1 is badChain 1 moved to location 2 = chain 2 is badthis means chain 1 (what you call chip) is bad!If the result was:Chain 1 was in location 1 = chain 1 is badChain 1 moved to location 2 = chain 1 is badthen chain 1 is good and the problem is the PSU or the control board, but this isn't the case.if you are confused still, do this.Remove chain B and C , keep only chain A and do 3 tests- 1 > ChainA- 2 > ChainA- 3 > ChainAThe results will be:-Chain 0 has 6 Asics-Chain 1 has 6 Asics-Chain 2 has 6 Asics

### Reply 6:
Not sure if T17 uses BM1396AB or another chip, but the price should be in the 5-10$ range per chip, but that isn't the issue, the issue is how are you going to replace the chip? you will need a professional to do it, another potential problem is it's unlikely to get 1 chip order, you might<rest of thread truncated>
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22847,"Date: 2019-01
Topic: Pools - Dead / Alive
### Original post:
All three pools DEAD due to VPN. changed servers ckpool.org came back but slushpool and kano.is did not. any ideas?i know if i reboot i could fix it but plan to wait to see if they eventually come back.sjs

### Reply 1:
Mining through a VPN increases the chance of the pool losing a block.Don't do that.You want the path from your miner to the pool to be as short and fast as possible.

### Reply 2:
why would they eventually come back? it's unlikely, unless there is a problem with both of them and then it get's fixed which is very unlikely.the above comment makes sense, but it's also not as bad as it may sound, the problem could be this- your VPN server itself is blocking slush and kano pool servers for some reason.you got two things to try to for now:1- change the VPN server location , until you get those pools back, try to chose a country that is crypto friendly.2- change the DNS on your router / miner, use a public dns like google's 8.8.8.8 * step 2 is not recommended if you are using online walletsalso you probably have to reboot the miner for a dead pool to become alive again, there is no guarantee that cgminer is going to ping the pool aside from the start-up period.but you don't have to do this at every change you make, you can simply try pining those pools from a pc that runs on the same network and using the same vpn by:1- open CMD 2-typeCode:ping kano.isif you get something like thisthen your miner will find the pool ""alive""however if you get something like thisthen your miner will show pool ""dead"".post back your findings, there are a few more things to try out. but <rest of post truncated>

### Reply 3:
they eventually came back with slushpool taking the longest time.

### Reply 4:
Pools have multiple servers, ping them all and choose the fastest 3.For example: Code:fping -c 1 stratum.kano.is or.kano.is nya.kano.is uk.kano.is de.kano.is jp.kano.is sg.kano.is stratum.kano.space or.kano.space nya.kano.space uk.kano.space de.kano.space jp.kano.space <truncated> : [0], 84 bytes, 159 ms (159 avg, 0% <truncated> : [0], 84 bytes, 183 ms (183 avg, 0% loss)nya.kano.space : [0], 84 bytes, 147 ms (147 avg, 0% loss)uk.kano.is : [0], 84 bytes, 214 ms (214 avg, 0% <truncated> : [0], 84 bytes, 188 ms (188 avg, 0% loss)uk.kano.space : [0], 84 bytes, 204 ms (204 avg, 0% loss)jp.kano.is : [0], 84 bytes, 289 ms (289 avg, 0% loss)jp.kano.space : [0], 84 bytes, 270 ms (270 avg, 0% loss)Here i would pick: nya.kano.space, nya.kano.is and stratum.kano.is

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13662,"Date: 2020-08
Topic: S17E custom firmware - Free Download
### Original post:
Hi all, i have updated my first post, is now available for all, free download .

### Reply 1:
So far his firmware has worked fine. I am going to Clifton to test two other t17 and t17+I need access to them as I have two networks. one from optimum and 1 from Verizon I will run his on 1 network as a precaution then shift to my other network where most miners are.

### Reply 2:
I totally agree with you mikeywith, but afaik there hasn't been a better solution with dev fee other than this. IIRC Vnish uses same structure to get his dev fee. I highly doubt it runs dev fee every hour (this would be way too often IMHO) and I doubt it runs dev fee as soon as you run it. But as I said, we should wait for official statement from thierry4wd.

### Reply 3:
Thierry I see that you have changed the pricing for this firmware from a fixed fee to a 2% dev fee, mind at first explaining the reason? was it hard to make the firmware run on certain miners and you were worried about piracy?Also, how does the firmware mine to the dev pool, is it parallel mining where 2% of the hashrate is always directed to your pool or the miner stops from mining to the owner's pool for 2% of the time?

### Reply 4:
I think it was changed due to lack of people interested in it. But would love to hear actual reason here from him.It mines for Y amount of time every X hours so it mines total of 2% of 24h which is ~30min. So to answer your question directly, yes, it stops mining on owner's pool for brief amount of time.

### Reply 5:
This is a bad way of going about, depending on when the dev pool is initiated, it could be a lot more than 2% and of course, could be less (with no direct benefit for the miner) this switching structure ""assumes"" that the miner is on 24/7 which isn't always the case.Now in a perfect scenario, if the total fees are 30 mins worth of mining, your gears run for 24/7, and the dev pool is on for 1.5 mins every hour (1.5*24 = 30 mins).if the dev is greedy, he wants to get the 30 mins as fast as possible, they might want 5 mins per hour, even if they were fair with 1.5 mins that starts at minute 00 of every hour.Time From : Time To00:00 : 01:00 = 1.5 mins01:00 : 02:00 = 1.5 mins02:00 : 03:00 = 1.5 mins03:00 : 04:00 = 1.5 mins04:00 : 05:00 = 1.5 mins05:00 : 06:00 = 1.5 minsat 5:30 your miner reboots, it goes back online at 5:35, the dev will take another 1.5 mins, a few reboots here and there add up and if you have a dozen gears, it will get even worse.If the dev is greedy and wants 5 mins an hour to collect the 2% in the first 6 hours of mining, it gets ugly.00:00 : 01:00 = 5 mins01:00 : 02:00 = 5 mins02:00 : 03:00 = 5 mins03:00 : 04:00 = 5 mins04:00 : 05:00 = 5 mins05:00 : 06:00 = 5 minss<rest of post truncated>

### Reply 6:
Hi everyone, and thank you for your interest!I will try to answer your expectations as clearly as possible, I am here for it;) and I am as transparent as possible!Here are 2 screens, which should already answer most of your questions;) 1: Regarding the single payment, for a license without devfee, I realize that it does not interest anyone in reality, or at least a very small minority ... that's why I decided to integrate 2% cost, but in return the download is free, which allows you to test it for free, absolutely nothing prevents to revert to another firmware thereafter (original included).2: the fees are extracted every 2 hours as you can see, my priority is to make your miner more efficient, not to fill my pockets as quickly as possible as some do (be careful, I do not quote anyone, some custom firmwares are very good too), and by design, the minor switch on the dev fees one can more than every 2 hours, for about 2min30.3: The beginning of the fees, in fact, when you install my firmware, you will need to play with it a bit (like any other custom firmwares), try new parameters, new freqs, votlages .... and by design, each time you press ""apply"" news settings, the count of these 2<rest of post truncated>

### Reply 7:
Vinish uses a different structure called ""parallel mining"" so 2% (or whatever the fee is) of your hash rate always mines to the dev pool as long as your gear is online and hashing, so this is a completely different way of handling the dev fees, at least this is what they claim to be using and I have no evidence to confirm nor deny this claim.That's pretty fair unless parallel mining is a thing then doing 24/2/2.5mins is pretty fair, you only get your 30 mins if the miner runs for 24 hours, this is way better than some other custom firmware devs who try to get their fees within a couple of hours.Thank you so much for your explanation, and good luck.

### Reply 8:
I stand corrected. Haven't checked for while...

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16487,"Date: 2023-04
Topic: What would be happened in 2024/28 BTC halving? When mining would be expensive?
### Original post:
I answered several questions in an interview but out of all the questions I found the above question to be very important. Asked what might happen after the 2024/2028 Bitcoin halving and whether Bitcoin mining will be expensive after the halving.How Bitcoin Mining Relates to the Bitcoin Halving of 2024/28 and What Will Bitcoin Mining Be Profitable By Then?

### Reply 1:
It's been discussed a few times in the main bitcoin discussion. <link> the real answer is nobody knows. If the price stays where it is, the mines that are just scraping by now are going to have to close.The ones that are doing OK, may have some issues staying profitable but with some players dropping out difficulty may decrease giving them a boost in profits.We also do not know what new hardware is on the horizon, we have a general idea but no specifics. So, there is that part of the equation. I think, and I could be 100% wrong, that we are going to see a drop in the small home / hobby miner. When you are just about breaking even, but you do it because you want to support BTC and spread the hashrate out. That's fine. If all of a sudden it's costing you $150 a month to keep your small farm running, along with the time and effort and noise and so on. You might just turn it off and sell the miners and get back into golf.-Dave

### Reply 2:
2023 = 6.25000 = 187,500 a block at 30k a coin seems doable and is doable and is happening right now2024 = 3.12500 = 187,500 a block at 60k a coin past history has show that we can do 60k2028 = 1.56250 = 187,500 a block at 120k a coin no history but at 1 sat per byte = a tx could cost no lower than 27 cents which could work.2032 = 0.78125 = 187,500 a block at 240k a coin no history but at 1 sat per byte = a tx could cost no lower than 54 cents which could work.smallest transactions are 227 bytes or 227 satsMy example above shows no great problem for 2024 even 2028 looks okaybut by 2056 the issues get bigger.

### Reply 3:
With things leaning towards a brighter future for bitcoin's price, at least following bitcoin's patterns during every halving where it pumps in price, one can safely assume that the mining industry will become even more profitable and you might see new faces by then, but as other people have pointed out, if the price stays the same as it is right now which is very much a possibility, a lot of small-time bitcoin miners will definitely have a herculean time staying afloat, some may even close up shop for good, which also means well for the second-hand gaming community since that only means more cheap GPUs to forage. In any case as of now there's no definitive answer as to what would happen to bitcoin and to mining if the halving comes, but one thing's for sure, halving or not the difficulty of mining depends greatly upon the valuation of bitcoin as well as how in-demand it is.

### Reply 4:
Considering that for all intents and purposes ever since 2014 BTC has been unmineable using GPU's I highly doubt that... Any farm that at one time mined BTC with GPU's will have closed their doors long long ago.

### Reply 5:
No one knows. The profitability of mining depends on the electricity cost, mining machine cost, and the market price of Bitcoin. In the future there is a possibility that mining machine company sellers might release more energy-saving miners with more hashing power that can trim down the maintenance cost and at the same time boost it mining capability. Or the price of electricity might get expensive due to the depletion of natural resources, or the price of Bitcoin getting stuck to where it is due to not enough catalyst to trigger a price increase. There are lots of variable factors that can happen i that can keep us unsure of what will happen in the future.It relates to mining profitability. Bitcoin halving means the reward is reduced to half. And it means a lesser reward for miners. If the price as I said, doesn't catch up with the halving, then miners may end up losing. We might see many miners shutting down which may cause difficulty to reduce and mining Bitcoin may cost lower and the new lower difficulty may give miners a good chance to profit. So at the end there will be a natural adjustment like 1. Miners quitting due to losses mining in high difficulty, 2. Difficulty adjust<rest of post truncated>

### Reply 6:
I think you're mistaking Bitcoin mining and altcoin mining. Even if somebody mines BTC with GPU right now, they're probably trying to do lottery mining, if that is even possible. Even if you can do it, the price of GPU has been decreasing steadily since those price increases comes from the ETH mining boom a few years ago. At the very least, you can find cheap AMD secondhand cards nowadays, since their latest release has been discounted so often nowadays. Anyone who wants to buy cheap GPUs is probably buying right now regardless of what happened to BTC ha<rest of thread truncated>
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10884,"Date: 2020-05
Topic: Bitmain Introduces the S17+ and T17+
### Original post:
Seriously ... How many more S17 variations can they come up with? Just trying to milk every last cent out of those 7nm chips I guess. So this is basically a 73th s17 Pro with no low power mode, so should be priced somewhere between a pro and non-pro per th.I'll wait 3 more weeks for the S17e+ pro... lol.

### Reply 1:
It is more industrial and less home friendly.Also pulling say 3000 watts it would be better on a 20 amp 220 volt circuit vs a 30 amp 220 volt circuit. Most likely I will not be getting it.I will focus on s17 and s17 pro as the 2225 to 2300 watt draw they do is more attractive to me.

### Reply 2:
Seems with Bitmain, I cannot place an order for an item..... without a newer, better version being released before the one I ordered even ships

### Reply 3:
wait, 3kw (on two cables) cannot run on a 30amp breaker if another miner is plugged in on the same breaker(ie. a t17e which draws almost as much)? the circuit is 220v; also, i smell s19's for the halving

### Reply 4:
Sure they can. A 3000 watt units is 12.5A on a 240v circuit. Two units pulling 25A on a 30A circuit, run with 10ga wire will be just fine. 24A on 10ga wire is recommended, but if its a short wiring run, say under 25', there should be no problems.

### Reply 5:
So, lets get crazy and say two units will run 6000w.And your ""iffy"" voltage gets down to 220vThat'll make your two units draw about 27A. Maybe 27.5ABreaker isnt tripping til 30A. But its close. Your power would have to drop to 200v to trip your breaker.10ga wire is rated for 30A, but the 80% rule (24A) is recommended. But, thats put in place due to longer runs. You'd probably be just fine if your circuit run was short.But to be safe, 40A breaker with 8ga wire would be recommended for two of these units. But 30A, 10ga can be done if you know what you're doing electrically.

### Reply 6:
Yeah the s9s will now fall off. Being replaced with serious gear.It is funny but this gear 73th at 40 watts a th is a bad fit for my 30amp circuits .I prefer s17 53 or s17 53 pro.I can run two of them and pull about 4600 watts on a 30 amp circuit.If I run the s17 + it will pull about 2920 watts which is not a good use of a 30 amp circuit.I suppose I could use a hp Pdu make it run 1 s9 and 1 s17+ that would be about 4300 maybe 4400 watts a circuit.

### Reply 7:
These would drop right in at farms that were running old S9s at close to 1500W each.

### Reply 8:
I know some farms have lots of 20amp breakers with a dual 20amp socket. They are a straight drop in power wise. So pull 28th add 73 th in about two minutes. Also drop one Ethernet cable.With bitmain dropping so much gear so quickly I now have a clear path to grow the gear.I buy 1 or 2 s17's a month using paypal to pay for them.By the ing we will be all s17 gear. Over 3ph in gear.

### Reply 9:
I wonder if they will be listed super high, then do the ""actual"" sale price and whatever difference in price to the real price, then refund you on your bitmain account like they've done before.

### Reply 10:
Borderline at best more then likely you will trip your circuit breakers over and over. running 2 units pulling 6000 watts on a 30 amp circuit is possible but not a good idea.6000/7200 = 5/6 = 83.333% which is over code. This assumes an exact 240 volt output many of us run from 217 to 227 as the norm.I have 3 spots with 220/240One does 217 to 227 this would never work with 2 units on 1 30 amp circuit.one does 234 - 237 I would bet against this one not tripping gear out.one does 237 - 243 this could work.I have pushed all 3 locationsthe 217 to 227 prefers 4800 watts or less on a 30 amp circuit.the 234-237 can do 5100 watts no issuesthe 237-243 can approach 5800 watts in the winter.there is no way would I try 2 s17+ on 1 30 amp circuit.I would do 2 s17+ and 1 s9 = 2950 + 1350 = 4300 watts which is no worriesnow most of my gear is in clifton which runs in the 217 to 227 volt zoneSo I do not try to get to 5000watts on any circuit.We also have an issue that low volts occurs say 190 volts every 10-14 days for about 10 minutes we think it is a power station issue so pushing circuits is simply not justified for us.If you have a very steady 240 volts in a very cool space maybe you can do 2 o<rest of post truncated>

### Reply 11:
Bitmain does a perfect ""Carrot and stick""

### Reply 12:
I would like to see them produce smaller units - with half the hash and half the power consumption of these current new ones - this would be much easier to incorporate into my mining space. and its much less of a loss should a unit go down. instead of 73 TH/s with 40 j/th - why not a 35 TH/s with 40 j/th - just cut these damn things in half.

### Reply 13:
Another reason why I still like Bitmain is the two power cables (splitting the W's and allowing me to use them, still).I hope Bitmain will still keep this feature.Also, I will measure my circuits today to be sure where I stand

### Reply 14:
How ha<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17e"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17e+ Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19"",
    ""hardware_is_owned"": false
  }
]"
10827,"Date: 2019-06
Topic: Buysolar and I will getting the A1021 to review and demo.
### Original post:
Spacer. I put all questions and posts here in the spacer post.

","[
  {
    ""hardware_name"": ""A1021"",
    ""hardware_is_owned"": false
  }
]"
16047,"Date: 2020-09
Topic: The second biggest mistake I made in mining.
### Original post:
so confusing ! For me, my biggest mistake.... i have buying two D3 ... so stupide !!! lol , lost all my money...

### Reply 1:
One man's trash is another man's treasure...My biggest one was buy 1 T17...

### Reply 2:
my Mistakes. Not holding early mining gains.I have had 57 btc free and clear and did not hold it.It Was worth about 9 a coin.At those prices it was cheap enough to hold. Down side would be only a 500 dollar loss.The lowest price btc I ever earned was 6 dollars.The highest price btc I ever earned was 20000 dollars.that is an expansion of 3333 to 1.I simply do not see BTC ever doing an expansion like that. 3333 x 10,000 = 33,330,000 a coin. that simply won't happen.I Think some lesser coins could do 100x. what they are now.I hold 1,600,000 Doge. worth about 4100 usd.I could see it being 10x what it is now far more easily then I can see btc worth 98,000 a coin.My goal is to have 10,000,000 dogeor to sell all my doge if it reaches 10 cents before I get to 10,000,000 doge. that is about 38x bigger then it is now.I still hold BTCI also hold LTC

### Reply 3:
I will keep the biggest mistake to myself since that was really really really the stupidest thing one can do, it was 3-4 years ago and probably nobody can fall for it now, so there is really no need to talk about it now because it's embarrassing, but when the right time comes, I will tell the story.My second biggest mistake:""A picture is worth a thousand words""Antminer S9k, I lost track of how many boards I lost, we did some cleaning and found these and I am about to take them to a ""special"" garbage dump myself because the truck driver refused to take them since they are made of steel-like materials he said. The number of the hash boards in the picture alone is about 40 (majority is S9k, maybe 2-3 S9j) that's about 13 S9ks, I brought those in an attempt to ""revive' them, but never had the mood nor the time for that, plus it was never worth it to begin with, we still have about 50-60 toasted boards at the farm, so at the best-case scenario there is probably 30 bricked S9ks + shipping that is about $10,000 wasted on nothing, most of those gears didn't run long enough to ROI the shipping cost.Why do I call this a mistake and not bad luck? because I was reading on telegram mining group<rest of post truncated>

### Reply 4:
Just saw this post. Look for e-waste buyers in your area.Grab a hammer and knock off the aluminum heatsinks, you can probably get $0.25/ pound for them.The boards with chips will probably get you $1.00 / pound.You are not going to get your lost money & time back but at least you are not just dumping it for free.<link>

### Reply 5:
e-waste buyer in my country is like a Unicorns elsewhere , I live in a developing country and we only read about these stuff on the internet, as for knocking off the heatsinks that sounds like a great idea, but I will let the gentlemen who work at the garbage dump collect them and make some money, they do that for a living since their salaries are terribly low, so they would collect whatever they can sell and I am sure they know how and where to sell those aluminum heatsinks.Thanks Dave.

### Reply 6:
Having been stationed in Subic Bay, Philippines back in the late 1970's. I got to see third world poverty conditions for the first time.It was pretty bad in comparison to a USA slum in a city which I had experienced as I lived close to one in New York City. I would not be surprised that there are garbage pickers in the dumps trying to make a buck.

### Reply 7:
my mistake also, not holdingive mined over 100btc since 2015. i first started with a Butterfly Labs Jalapeno(local pawn shop for $20) miner that got me into this expensive journeythen i started selling bitcoin as i mined it. ugh bigggggg mistake

### Reply 8:
WELLI have a lot of doge now. I would love a nice spike in it.Btc is hard as fuck to mine now.I burn 115kwatts vs 5kwattsI have 1.2 ph as high as 1.5 ph before the 1/2 ing. I mine 0.009 coins a day and have partnersback in the day with 22 gpus and 11gh using 5kwatts I mined a coin a day. now coins had 6 to 13 dollar price back in 2012.But I could have kept coins with ease.

### Reply 9:
In the grand scheme of things, nobody held bitcoin for too long, when bitcoin was going for 10$ nobody would have guessed it would be worth $9000, I am almost sure that MOST of those lucky hodlers either forgot they had bitcoin or they were lazy to sell it back then, and once bitcoin went viral they remembered about their holdings, sold and made a fortune, also a huge portion of them had no easy way to sell bitcoin back then so they stored their PK somewhere and retrieved it later when selling bitcoin was much easier. Unless you could foresee the future, I don't think you should be feeling bad about it.

### Reply 10:
Just sell them on ebay or equivalent. There is people who can reuse those chips or repair the boards for spares. <rest of thread truncated>
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    ""hardware_name"": ""D3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9k"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9j"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Butterfly Labs Jalapeno"",
    ""hardware_is_owned"": true
  }
]"
22873,"Date: 2019-02
Topic: How to fix s9 the miner accidentally remove from power source while upgrading?
### Original post:
Do you know how to fix a s9 miner bootloop?I accidentally remove the miner from the socket while upgrading I remove it from the socket because of the dashboard stuck.Tried all resetting ways but until now the miner wasn't recognize anymore.i search in the google and I found sd card flashing but i don't know how to make it work. Do you know how to flash the miner using sd card?

### Reply 1:
Never heard someone success on flashing antminer s9 with SD card but I know some other way to fix this but you need a PICKIT 3 to reprogram the s9 control board. Someone done this with t9 miner but I know it will also work on s9 miner. You can check the repairing method below. - repair a T9 + after a bad firmware (lost chain)

### Reply 2:
that's only to fix the hash boards, it won't work for the control board.he needs to flush it using an SD card.download the tool from bitmain > <link> then you will need the SD firmware which i can't seem to find on bitmain website, but i found this on the forum <link> guy has it uploaded somewhere * i am not responsible for any damage caused by any of the files, DYOR and do this at your own risk what i would do , is contact bitmain and ask them for the file, it would be safer that way.

### Reply 3:
Or, place Braiins OS into an sd card, move jumper jp4 and mine away!Of course it would be better to fix the OS in the nand on the controller so you don't need to depend forever on the sd card.

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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""t9 miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
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]"
11259,"Date: 2023-01
Topic: New CV1835 Control Board on Antminer S19 XP
### Original post:
Bitmain used Xilinx, BeagleBone and AMLOGIC control boards on S19 series of miners. Three different makes created a lot of hassles for anyone trying to overclock, run aftermarket firmware etc. It appears that they have now introduced a 4th model to the mix and this one looks like a Bitmain in-house design. It's the CV1835 board. One of our recent S19 XP came with this board. more pictures here. Needless to say that more board designs will create more hassles for miners, firmware developers, and resellers. Buyers often want to purchase machines with specific CBs and there's no way to tell until you open the factory-sealed box. I'm looking to understand Bitmain's rationale behind using so many different CB models from others here. It can't be a shortage of Xilinx boards, because Bitmain has had those on sale on their website for a long time and people can purchase as many as they like. Is this just an attempt to thwart the development of aftermarket firmware?

### Reply 1:
I'm going with cost. Every dollar they save in making the boards is another dollar in their pocket. And, odds are they are not making them. The put out a RFQ for a board with whatever specifications they are looking for and then go with the cheapest bid. Would not be surprised if the cost of tweaking their code to work with the new board is included in the quote.No different then me having 3 of the exact same model Dell monitors in my office that were made by different companies and Dell just put their logo on it.Dell don't care since the specs are all the same, or at least supposed to be the same you can see a difference but according to the website it's the same.Home routers are also the same a lot of the time. Rev A Rev B Rev D and so on. Take them apart and they look nothing alike. But they are all the same model number and look the same on the outside.-Dave

### Reply 2:
alas, all of these mining manufacturers do the same stupid stuff every single day, MicroBT does something similar with their PSUs, they have a dozen of models, some output 12V some 14V, and in every voltage rating you got a handful of models, many are not cross-compatible, you ask the manufacturer at PSU model I am going to get? they will give you the same stupid answer that Bitmain gives ""it's a surprise, you need to open the box first"".So after buying a dozen gears of the same model, you will end up with a dozen different PSUs that aren't cross-compatible, and it's a nightmare when it comes to spare parts.I think I agree with Dave, it's all about the cost for all of these cheap manufacturers, if Bitmain finds another way to make a cheaper CB, they will add a 5th model to the same miner.

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11303,"Date: 2023-05
Topic: Avalon Miner A1166 Pro 81T rebooting frequently
### Original post:
Hello, guys. Please, a need help here.My Avalon Miner A1166 Pro-81T is rebooting constantly, i dont know what do do. Please, help me.

### Reply 1:
What's the scenario you see it rebooting, like if it's anyhting specific? Do you see the pattern or can you replicate the scenario that leads to rebooting?

### Reply 2:
The miner boots correctly and when it starts to show mining activities on its dashboard, it decelerate the fans to full stop and restart over, after about 30 seconds.

### Reply 3:
If you can go to the dashboard would you mind to go to API logs and copy them and then paste it here put it inside the insert code tag or use pastebin.com and paste the URL here.Since it's rebooting do it faster we might get some idea on the logs.If you can't then I suggest try to disconnect all cables and replug only the power supply and control board try to run it without hashboards and let see if you can get the recent API logs.

### Reply 4:
<truncated> <truncated> av':0.00,'MHS 30s':0.00,'MHS 1m':0.00,'MHS 5m':0.00,'MHS 15m':0.00,'Found <truncated> <truncated> Failures':1,'Local Work':2,'Remote <truncated> Blocks':1,'Total MH':0.0000,'Work <truncated> <truncated> <truncated> <truncated> Share':0,'Device <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> <truncated> MEMFREE[1673168.0] NETFAIL[31 122 154 0 0 0 0 0] SYSTEMSTATU[Work: In Work, Hash Board: 3 ] Elapsed[212] <truncated> LW[115149] MH[0 0 0] DHW[0] HW[0] DH[0.000%] Temp[29] TMax[64] TAvg[57] Fan1[2245] Fan2[2244] Fan3[2232] Fan4[2228] FanR[25%] Vo[1] PS[64 1224 5 0 0 1384 11] PLL0[0 360 0 0] PLL1[0 360 0 0] PLL2[0 360 0 0] GHSspd[0.00] DHspd[0.000%] GHSmm[0.00] GHSavg[0.00] WU[0.00] Freq[0.00] Led[0] MGHS[0.00 0.00 0.00] MTmax[64 62 64] MTavg[58 57 57] TA[360] Core[A3200] PING[0] POWS[0] HASHS[0 0 0] POOLS[0] SoftOFF[0] ECHU[0 0 0] ECMM[0] SF0[436 456 476 496] SF1[436 456 476 496] SF2[436 456 476 496] PVT_T0[ 58 60 60 57 59 60 61 62 59 62 55 57 58 57 55 60 61 59 57 59 58 59 60 60 60 60 59 58 56 59 60 59 57 60 58 58 58 59 59 56 59 59 59 58 60 55 56 53 57 56 59 53 58 55 54 54 55 56 54 53 50 52 50 52 54 52 52 54 54 56<rest of post truncated>

### Reply 5:
There may be a faulty psu.

### Reply 6:
Next time learn how to use insert code tag like this below.I don't see any issue it looks like fine would you mind to set the miner to low power mode.Or I think try to increase the fan speed of your miner you can do it by using FMS tool under diagnostic and send this command <truncated>

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    ""hardware_name"": ""dashboard"",
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    ""hardware_name"": ""control board"",
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11254,"Date: 2023-01
Topic: niceasicminer.com - is it legit?
### Original post:
Does anyone know if <truncated> is legit to buy from?Anyone have any dealings with them and received product or know anyone who has received?Thanks in advance!

### Reply 1:
How do you trust a newly registered domain? Look at the whois info below its a 4 months <truncated> LLCRegistered <truncated> <truncated> On:2022-12-17I also tried to search it here on the forum no one mentioned it except you another thing that I noticed is that the price of their units is pretty much more expensive than buying directly from Bitmain shop and look all of them are out of stock except Antspace.So I suggest don't deal with them because there is a high chance that this website is scam.

### Reply 2:
This ""team"" is related to alot of websites, some posted below.<link> like a copy paste from several websites with some changes - Same ""TEAM"" on <link> - > <link> - > <link> - > <link> BitMaxz says, just stay away from this obvious scam - unless they are just selling all products that exist

### Reply 3:
Thank you!

### Reply 4:
niceminer have provide contact info so directly connect and confirm it's trusted or not

### Reply 5:
Really, we don't know niceasicminer was legit site's or not but we read one of guy buying miner from that site and received it....

### Reply 6:
If you are going to contact them and ask them it's obvious they will tell you that they are legit even if it is not.Where did you read? Is it from a trusted site and people?Even if there is one buyer who bought miner from them it doesn't mean you need to buy look at the whois it shows you it's new and never mention it here before so no one knows here that website exists unless you are trying to promote it? Look at your account it's newbie you just created this account to promote them.

### Reply 7:
it's like asking a corrupt Government official if they are corrupt or not. Of course, they will say they are not corrupt. What do you expect?Besides you, two (restiv5151_0 and colingra_wood) are sockpuppet account created to make false replies here to make it look like niceasicminer.com is a legit site, yet we all know the red flags pointing it to be a scam.

### Reply 8:
I think asicminer have own site's. and currently people buying directly from supplier.

### Reply 9:
currently who's buying asicminer? You getting better deal as offline market...why prefer and take it risk..

### Reply 10:
Hi all!I'm Jay and I created <link> and this scenario is the perfect reason why I created the site.As a reseller and hosting operator myself (I'm based in Thailand and Laos), I have to deal with Chinese suppliers all the time and trust is a big issue. So my friends and I feel that there is a need and we created ASIC.guide to try to solve the issue.We want the site to be the place where buyers can do research and make a better informed decisions on manufacturers, distributors and resellers. Verification is one of the highest priority for us, but we are still trying to figure out how to best do it.We are thinking about adding a verified warehouse so that we can help confirm that they really do operate (or else they won't be renting out warehouses) vs they just do drop ship (and you could have buy directly from someone else).I'd like to know that in this situation for niceasicminer, what kind of info/intel do you think would be best in order to make an informed decision? Obviously asking the seller themselves won't solve it. But what if we have their 'verified warehouse'? Or 'pictures of proven shipments'? Any kind of feedback would be welcomed as we add more features to the site.In t<rest of post truncated>

### Reply 11:
Customer can directly asicminer sell as a reseller?? <link> this one was also connected to asic.guide site

### Reply 12:
Why is it 1 post accounts with the same bad grammar trying to ""help"" the site or try to push some kind of connection, lmao not sus at all

### Reply 13:
Wow, those are very insightful thank you! 1) Yes, just to explain a bit more of the current companies listed, since I've been selling miners and hosting miners since 2017 (I co-founded <truncated> The companies that I listed are kind of pre-vetted, meaning they do that business operations. But sooner or later those kind of companies will run out and I will definitely need to have a way to screen out scammy companies out of the potential listed companies.2) Your point for live video stream is really good and I will definitely keep that in mind when we start to list companies that I haven't heard or worked with before.3) Your point on recent updates like Compute North, MinerVa (and also Compass Mining) are legitimate and it's something that is on our radar as well. I still decided to list them because I think they still have operations and assets. But there has been some big changes like you mentioned. Currently I have a few potential solutions:- Add news section => I either have to have someone manually pick out some news that<rest of thread truncated>
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16585,"Date: 2023-09
Topic: Do the Pools buy Hashrate / share with individuals?
### Original post:
****This is Not about online mining, cloud mining or stuff that spam us*****The question is about the concept of sharing our mining power to the pools using old miners. For example, over the period of time technology is getting outdated and new Bitcoin miners are continuously released on the market. This leaves us middle of no where thus making it hard to keep up the mining. All we do is heat up the miners, waste the electricity and get paid some bucks that never achieves the break even against the electricity cost and increasing difficulty. The problems: - Outdated miners can't be sold anymore- They are burden to the mining farm- No profits- Waste of electricity Pool Sharing:The only way to earn from them could be sharing them with the pool. For example, pool should have different section or protocol where they will use the hashing power from such outdated miners that connected to them and use that power altogether. In return hoping that we will receive fixed returns for sharing that hash power. Is there any system like this that pools are already following.This is about the outdated miners and their pool sharing.

### Reply 1:
No sane/legit mining pool would guarantee fixed return which leave miner (with old ASIC) at profit. There's no point of having higher total hashrate when pool would earn less profit.

### Reply 2:
I was thinking more of few bucks that will at least cover the electricity and keep the top up for running it. Since solo mining is anyways not an option, so pool is the only entity that can suck hashing power from let us say thousands of miners all over the globe and may be get success in finding full Bitcoin reward thus be able to share revenue profit to us. there share would be insignificant but it would be something for sure. The guarantee should be based on the prechecks. For example, after checking or diagnosing the ASIC for its condition and having good benchmark over the others in a pool. They will lock a price that how much it might be worth and then pay back. Just the power of bulk hashing I am talking about. OR it's just not possible at all?

### Reply 3:
Old ASICs can (almost) always be sold, you will always find someone interested to buy old ASICs, someone not paying a lot for his electricity, or doing a specific project etc.. Maybe you'll sell it at a loss, but if you've done your calculations properly when you bought it, you're supposed to have made a profit on it before selling it. The notion of ""outdated ASIC"" isn't useful to me. What really matters, is the cost of your infrastructure, your kw/h cost and how much you pay for your hardware. If you're able to make a profit taking all these costs into account, no matter how old the ASICs are, profit is profit - as long as the ASICs are able to produce a stable hashrate at least.Not sure why... A Th/s is a Th/s, a kw/h is a kw/h. It's up to each miner to make their own calculations and forecasts, and I don't see why we should be giving gifts to those using older generations of ASICs. If a miner can no longer make a profit from certain ASICs, he's free to sell them to someone who pays less fixed costs than he does, and I don't see why that should be the problem of pool operators.

### Reply 4:
Bitcoin mining is bitcoin mining.There's no side scheme to get rich that no one knows about and you can magically use.If you mine a low hash rate, you get an equivalent low reward.Hoping that someone will pay you more, just means you don't understand what you are doing.

### Reply 5:
There is no way to make something like that profitable. To give you fixed returns you are looking at a PPS payout. X TH gives you Y BTCY BTC either covers your cost of electric and gives you a little profit or it does not.Taking that all off the table if they are willing to give you Z BTC which would HAVE to be a lot less then Y because they are giving you a fixed amount. Why would you mine there as opposed to a regular PPS pool?-Dave

### Reply 6:
It's also worth to mention there are company which will give you money for recycling unused electronics.It's definitely impossible when it lead to smaller profit due to guarantee which leave miner (with old ASIC) at bigger profit when they mine normally.

### Reply 7:
I'll take an example with the old Antminer S9 asics, which cost $25-35 each. Delivery to another country may cost more than the price of the equipment, and no one will guarantee the uninterrupted operation of the device. Asic can break down and its repair can be more expensive than its cost, that is, the recipient needs to take another disposal tax from you These asics can only be used at power plants to burn excess electricity.

### Reply 8:
I don't know what you mean by outdated miners, since it is bitcoin mining that does not depend on how modern the mining tools are. In the end, it is Th/s accounts for the cost of electricity, so there are no outdated miners<rest of thread truncated>
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    ""hardware_name"": ""ASIC"",
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    ""hardware_name"": ""old ASICs"",
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    ""hardware_name"": ""Antminer S9 asics"",
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]"
23175,"Date: 2020-01
Topic: Dragonmint T1 not reboot updating pools
### Original post:
A Dragonmint T1 problem, I turn on the miner and everything is correct, in fact it is hashing, but when I update the pools the miner turns off and does not start again. I was thinking about changing the firmware with sd card, but I can't find where to download it on my pc??Anyway, or i do not know if modify the pools directly in the PC is possible the i flash the control board with an sd card. maybe i need to replace the control board?Some help please.

### Reply 1:
I have the same problem, whatever I modify in configs which requires a reboot(e.g. pool data), the machine turns off and stays so. As you mentioned, would be great if somebody has a tip how/where to modify the firmware (set some basic configs as the pool data) and just flash it via SSH (no sd card slot on mine).

### Reply 2:
I don't find sd card firmware directly from halong it seems that their miners are automatically update. If you have SD card slot you can flash it with different firmware like braiins OS. You can check their official thread from here <link> if you don't have an SD card slot I think you can't flash it with Braiins OS but try to flash it in webGUI using Braiins OS I think they have a firmware where you can use to update your firmware to Braiins OS or through SSH you just need to have access to SSH of your dragonmint t1 This is permanent method and you can't roll back it to the original firmware.

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    ""hardware_is_owned"": true
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]"
16415,"Date: 2023-01
Topic: Cloud mining for bitcoin
### Original post:
Greetings! I'm on a quest to find some bitcoin mining sites/apps that have a considerably lower threshold for minimum withdrawal My plan is to reach whatever the would-be minimum payout thresholds, add it all up and then sell the BTC. I'm looking to setup as many as I can to get ideally 0.33 BTC as quick as possible; then sell the BTC. The money I received then will go towards groceries and anything else beyond. Such as investing in the best paid online traffic methods in efforts to make money online via online content creation. I've recently been spending some time devising strategies and formulating plans to make money working smart rather than hard.Or perhaps another cryptocurrency can help me with this, one way or another. Thanks for the replies, greatly appreciated

### Reply 1:
There is no bitcoin mining website and all so called cloud mining websites are scam. Such websites usually display a fake number as your balance and once you reach their minimum withdrawal amount, they ask you to deposit some bitcoin to be able to make withdrawal.Don't waste your time and your money. That's not how bitcoin is mined.

### Reply 2:
If it was profitable we would all be doing it already. Even if there was a good company the profit is so razor thin right now it wouldn't be profitable for either party. You could buy some asic's an have them hosted. But I would tend to think that simply buying bitcoin and holding it would be more profitable and maintain liquidity. ROI would be a long time as well.

### Reply 3:
Don't compare the profitability of mining and buying a bitcoin they are different. You can reach the ROI fast in mining depending on where you live or if you have free or very cheap electricity rate.Buying bitcoin and hold them for a long time is always effective but mining will generate you more bitcoin and you can hold them until blockhalving to make more profit.

### Reply 4:
Don't waste your time and other resources such as internet data on the cloud mining scamThe best resource you have right now is actually time, and you can turn that time into money if you get a well thought strategy.With this current inflation rate, I am pretty sure there are very few places with cheaper electricity. I still think buying Bitcoin is more effective and profitable for a low budget person if one buys at the right time of the market.Mining Bitcoin requires a lot of effort and also takes time for you to breakeven, even if the electricity is free.

### Reply 5:
Currently, when home mining requires really high costs to pay bills, more and more scammers have begun to offer cloud mining services, you need to be extremely careful and try not to trust their attractive offers, since at best it is a ponzi scheme and almost always it is a scam.

### Reply 6:
If you had bothered to read any of the previous posts you would know that the answer is a resounding NO!The vast majority if not all of them are SCAMS.

### Reply 7:
If you dont care about the logistics involved , you can get discounted bitcoin via mining.The profit spread of buying vs mining with 90+% of btc already being mined and the work/capitol involved in mining now make purchasing the coin directly the ""best"" bet.Time is money, the time & logistics involved in mining vs buying isnt worth the spread in profit differences imo. (edit to say these days , in the past mining was the way to go!!!)

### Reply 8:
I used to rent from Hashnest, which was the ccloud mining arm of Bitmain. But in two years I ended up losing more money than earning. Cloud mining is not profitable at all. Not even mining at Hashnest cloud mining services is profitable. Cloud mining is not worth it at all. Better for you to buy real miners and find someone that can host them for you that to contract web mining services. This is my opinion, but you re free to check Hasnest and see what they have to offer.

### Reply 9:
However, despite all the risks associated, including with cloud mining, all the nearest capacities on the recently launched binance cloud mining have already been sold out, after binance announced the launch of cloud mining.<link>

### Reply 10:
As mentioned by reasonable members of the forum with enough experience that you should kind of give value to their opinion: Most (99%) of ""cloud mining services"" are SCAMS.Meaning they are PONZI-SCEMES in the most traditional sense. If you don't know what that means, google it, it's essential to survive in crypto.In the rare case it's not a scam: Just understand, that price fluctuation of bitcoin, total (global) hashrate and electricity costs will vary and make any prediction of profitability almost impossible.

### Reply 11:
Hi everyone, so I read your replies and although it may not have been what I hoped for, thanks for the replies. However, I know this forum is about bitcoin but is there any way I could make this work with any other cryptocurrency?I.E. Ethereum and/or Bitcoin Cash

#<rest of thread truncated>
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16473,"Date: 2023-04
Topic: asicboost 16 development
### Original post:
has anyone ever tried employing asicboost 16 on s9? if so, did it work out?

### Reply 1:
The S9 has been natively supporting ASICboost as do all pools since around 2017 so there is no 'trying it out'...You would have to have one of the earliest S9's and never upgraded the FW for it to not use ASICboost.

### Reply 2:
the s9 we work with supports asicboost but only with 4 midstateaccording to the articles that have been published, if asicboost is used with 16 midstates, it can increase efficiency by 15%.until now, every single pool and s9 device that we have looked at, only supports asicboost with 4 midstates.we are looking to find out whether or not s9 natively only supports asicboost with 4 midstates or the pool is the issue.

### Reply 3:
thank you for the information. you seem very knowledgeable so thanks for sharing it!

","[
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11286,"Date: 2023-04
Topic: One Stop Shop To Do Research on Mining (Manufacturers, Sellers, Hosting, Repair)
### Original post:
Hi, I'm Jay and my team and I have been working on ASIC.guide<link> We launched a few months ago and for the past few months, we have been working hard to add as many companies in the space as possible (semi-curated). I think the website is now a lot more well-round and you can now do research on:- Manufacturers- Distributors (For Wholesale Purchase)- Resellers (For Retail Purchase)- Hosting providers- Repair (Repair centers, Repair Training, Repair Tools)- Services (Mining pool, Custom Firmware, Miner Monitoring, and other services)You can also filter the list by 'Company Type' and 'Country'For now our plan, is to add more companies and work on the verification process so that we can do the verification part for users and provide a space for legit companies to operate.Would love to get some more feedback from the community!

### Reply 1:
define if pplns / soloalso put a trust score as for anything you mentionallow adding reviews

",[]
23111,"Date: 2019-10
Topic: A851 Hashrate steadily dropps
### Original post:
I have this power hungry ASIC on 3 separate power supplies (each power supply is on a different fuse on my residential panel, I am using extension cords). Each is a 120v 750W server power supply. I actually have an original canaan sorcerer but do not have access to 220v at home (dont know how to make it work at home either, wish i could)1) My problem is that the hash-rate steadily drops from 14.7 (Advertised speed) , slowly over a 24 hour period all the way down to 3 th/s. I will supply the CCMINER code when I can access it. 2) Should an ASIC run at advertised speed or do they ever go half speed when the network is not busy?

### Reply 1:
For starters:Have you looked at my Avalon troubleshooting guide?It applies for the A851 as well.(the url link is in ny signature space.)

### Reply 2:
I did, have referenced it before, thank you for creating that. I am using wireless repeaters and am convinced they drop or degrade signal. I have ruled out power supply for now. Will need help deciphering the Log file if possible, thank you in advance

### Reply 3:
You can figure out if it is because of a bad network communication either by setting up a constant ping monitoring for your wifi setup or by simply trying a wired ethernet connection.Is your ISP stable?Is your pool stable?

### Reply 4:
I'd suggest posting the log (enable debug first), copy paste the log after it drops, into code tags on here. I've never seen an 851 slow down due to network but haven't used wifi/repeaters for mining ever.

### Reply 5:
How do you have it on 3 separate supplies?Unless I am missing something if you plug 2 power supplies into 1 of the power boards bad things are going to happen. Each board should only have 1 power supply if you have to split them up.-Dave*I could be wrong but I know on the other Avalons it's one power bus so multiple PS are bad, never took a a851 apart.

### Reply 6:
I dont know how helpful this will be. this log is right after it ""Crashes"" now. meaning it hashes nice at 14 th/s, but then drops connection. this all happens soon after it is started. It then resets, and then just goes into ""low power mode"" I call it, as it only hashes at 4-5th/s. I will post another log when I can from the ""low power moder"" when I can.Code:[Firmware Version] => Avalon Firmware for avalon8 - 20190404 luci: b9dea8e cgminer: b2356a1 cgminer-packages: bff9628Reply was <truncated> <truncated> <truncated> Count=0,Smart <truncated> <truncated> I2C Speed=400000,AUC I2C XDelay=19200,AUC Sensor=19709,AUC <truncated> <truncated> Level Offset=0,Nonce Mask=24,USB Pipe=0,USB Delay=r0 0.000000 w0 0.000000,USB tmo=0 <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time=false,Work Can Roll=false,Work Had Expire=false,Work Roll Time=0,Work <truncated> <truncated> <truncated> Diff Count=317,Max Diff Count=317,Times Sent=74,Bytes Sent=8865,Times Recv=76,Bytes Recv=3250,Net Bytes Sent=8865,Net Bytes <truncated> Calls=0,Pool Attempts=0,Pool Wait=0.000000,Pool Max=0.000000,Pool <truncated> Av=0.000000,Work Had Roll Time<rest of post truncated>

### Reply 7:
Can you upload a log of it working also? The log you posted doesn't have the miner listed / active or maybe that info is missing.It should look something like this the only difference should be you only have 1 miner and this pi has 2.Code:[Firmware Version] => Avalon Firmware - 20190404 luci: b9dea8e cgminer: b2356a1 cgminer-packages: bff9628Reply was <truncated> <truncated> <truncated> <truncated> <truncated> Elapsed[1229943] MW[363408169 363408266 363408371 363408459] LW[1453633265] MH[29 50 36 56] HW[171] DH[16.757%] Temp[40] TMax[85] Fan[4110] FanR[65%] Vi[1275 1275 1280 1280] Vo[3895 3926 3920 3925] GHSmm[11726.60] WU[163484.38] Freq[655.56] PG[15] Led[0] PM[1] ME[1 1 1 1] MW0[19015 19029 17469 18742 19296 13712 15810 17466 15746 13260 19047 18829 14383 18766 16817 17908 18995 15728 14410 18593 16406 17748 16308 19614 17230 19131] MW1[18334 15804 18567 19217 18729 19601 18614 19350 19377 17802 15810 19423 18283 18767 18373 17854 19398 15251 19005 17896 19663 18527 18868 18915 19134 19009] MW2[17593 19515 16571 14947 18479 19387 18534 17845 17879 19114 16858 18549 17790 18573 17558 18963 18982 16355 19061 19051 19084 19099 19068 18677 15751 18795] MW3[17577 19271 18706 17389 19<rest of post truncated>

### Reply 8:
I am running it off 2 PSU now, seems to magically be working. For some reason I thought having another PSU would help it get more power if needed. I am providing it 1500W now ( 750 on each psu). Just worried it will not be enough to reliably run. I think we found the answer. I will provide another log if issues come up

### Reply 9:
You might want to run it in the low mode, or balanced with a voltage offset of -2. Default settings in balanced mode pull just above 1500w's, High mode comes out to like 1800w or something like that.

### Reply 10:
You could us<rest of thread truncated>
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22887,"Date: 2019-03
Topic: S9 issue, it will not hast
### Original post:
does the intake fan start a bit late? i had a similar issue once as regarding the descption of the boards's leds, i can't really remember the kernel logs, it turned out that the firmware was bad, so i had to flush another one, i think you should go to bitmain's website, find the exact model you have ""s9/s9i/s9j"" and try every listed firmware, there is a very good chance this problem will be fixed with one of the firmware.

### Reply 1:
It is better if you can post the whole logs here than just image.According to your logs, it seems that you have some bad chips from your 2 hashing board. I recommend you to test them one by one if you don't have extra s9. Then let's see if what hashing boards are damaged. Replacing hashing board might solve your issue.Edit:Try to flash the hashboard with PICKIT 3 there is a guide here on the forum you can find it from here repair a T9 + after a bad firmware (lost chain)This method mostly used if your logs show PIC error or use to revive dead hashboard.

### Reply 2:
Sounds like a control board issue. Can you copy and paste the kernel logs in a code block here or on pastebin so we can take a look?If you have a /tmp/searcherror message you can re-flash the firmware or do a IP report reset to fix it.

### Reply 3:
I have 4 more units that are healthy, and will first try with flashing the unit. Will revert with findings.

### Reply 4:
Hi gentsAssistence required.I have an S9 unit that will not hash, at first it was reporting a fan error, fan replaced, error is still there. Then I had an issue with power supply, replaced it, now it startsm but it will still not hash. LEDs on the board are a strange mix-on one board nothing is lit- second board has one red LED- third board has both red LEDsLog<link> assistance is appreciated

### Reply 5:
hi, the problem is VERY easy to find !!! at last line on your kernel log : ""check FAN Speed Error"" , 720 is very low !!! the miner are need ninimal 3000trs at start ! and idal is 6000trs or more ... Your problem come only with FAN or Controler board !!! no problem with hashboard ...

### Reply 6:
If it doesn't work you can try to test your hashboard to other working miners if the result is fine then the problem is inside your control board not in hashboard. But if it shows some weird result like bad chips from other working control board well your hashboard is damaged. <truncated> test this firmware <truncated>

### Reply 7:
If you fan speed is at 720 RPM it means that fan is dead and only being turned by the pressure of the other intake fan

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    ""hardware_name"": ""power supply"",
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22987,"Date: 2019-06
Topic: Mining with domestic solar power
### Original post:
I have a 3.9kW PV array on a domestic property in the UK. I don't use much of the electricity it generates so I am looking to get into ASIC mining with a single device. I have looked at the online calculators, but what puts me off buying something like a Antminer S9 (or S17 if I can get one) is the noise and the fact it'll only be profitable when it's sunny. This is because my electricity price is quite high at 0.15 GBP/kWh (0.19 USD).I might build an insulated box for the noise issue or later on do some dielectric cooling. Suggestions welcome here though as the unit has to be quiet.My real question though... Has anyone used, or is there, some kind of solar switching device that can push power to the ASIC miner when I am generating more solar power than I can use? Can these units stand a few daily power cycles and do they lose anything significant they have been working on if they are shutdown mid-calculation? Would this just be a daft thing to do?Thanks in advance.

### Reply 1:
There is nothing special about powering a miner , so think of it as if it's a TV or a Fridge, if you have enough power to power it up, then all good.there is nothing you going to lose for not being able to mine 24/7 , however , there are a few payments methods , the best that suits you is PPS = Pay per share , this will ensure that you get paid for every share you submit when your miner is on, here is a simple example.let's assume your miner submits 1 shares per second , and each share = 0.00001 btc for every second your miner is on, you get 0.00001 btc, when you turn it off, nothing of the previous work would have gone missing.as far as the noise goes, there are some silent boxes and tweaks that a few members here have showed, you can search the forum , but keep in mind these things are loud , so no matter how much you try to make them quite, the fans will always make some noise.

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16396,"Date: 2023-01
Topic: Hi all, i need some help with my Thesis
### Original post:
Hi all so here is my story, I decided to do my Thesis on the profitability of mining for bitcoin in the country i live. I already knew the answer before i started but i thought it would be an interesting project. For my research i decided to buy an antminer s5 and began my mining journey. After about 3 days the wife was getting freaked out by the noise and she was sure the house would burn down so i had to put a stop to things. The problem now is that i have no data to back up my research. I was wondering if any kind souls here could help me out with some data maybe from the last 6 months i could use for research. Thanks

### Reply 1:
Use any of the mining difficulty calculators and it can simulate data, no need for actual mining.

### Reply 2:
Yes but would this factor in luck of finding a block if i was in a pool.

### Reply 3:
Mining calculators work on statistical modeling of expected earnings. There is no guarantee of actually making the expected earnings. For example, had a user been mining on my pool since it began, they would have made approximately 25% more than expected values. Looking at Kano's pool, you can see a lifetime earnings of over 106% of expectations.

### Reply 4:
Yes i was thinking that which is why i think i need some real raw data to work off.

### Reply 5:
You need to tell us in which country you live. Because if it isn't someone who's living in your country, results might not be exact, because of the electricity price, of the heat, etc.

### Reply 6:
I am in Ireland, i am not sure is anyone else here from Ireland here mining. Would it matter what country i am in when i just need the data of actual bitcoin that was mined. I can adjust it then for electricity prices in my area

### Reply 7:
Hi there, I have a 15 th/s farm and i could spare one antminer s5 to your purpose. I could give weekly reports and mine on any pool you would like. I am in the southern USA but i think this may work. PM Me or reply thanks!!

### Reply 8:
Sounds as if you have already learnt a lot about the realities of mining, the noise, the electrical consumption. In Ireland the S5 would not even mine enough to cover your electricity cost.Best of luck with your Thesis. Perhaps you may like to change it to the effect of the halving on mining.

### Reply 9:
Could you not just use a mining pools data? Or look at the blockchain? Each pool would be different on results unless your talking PPS. So I would suggest pick a pool and use their data.One thing worth noting 6 months of previous data will look different then the next 6 months. With having it's hard to say a lot of what will happen and pricing is also hard. So I think you need to decide if 6 previous months data will work if so it is very easy. Or if you need 6 months of you doing it personally. I guess this might depend on what the thesis is for.

### Reply 10:
If you're just looking for raw data, kano.is has plenty of publicly available from which you can see luck stats, etc. I ran a thread for a year giving results of my experience mining on p2pool. While I ended that in December (was running my own pool at that point), it does contain a year's worth of actual mining data. You can find that thread here: <link>

### Reply 11:
Thanks everyone for your help, I have said it before but this place is really full of some decent people.Thanks again.

### Reply 12:
There's also the heat factor that needs to be taken in account. But in Ireland, there shouldn't have any problem I think.

### Reply 13:
I think that OP has done his Thesis already. I would be happy to read it btw if it's not top secret of course. I'm sure not only me is interested, so OP, please share your work if it's possible.

### Reply 14:
Hi you can just user mining calculator and thus you will Able to get data and that's so simple. And I I hope that there some mining calculator like <link> This is just a good website where you can find good data regarding Crypto mining power and also like How many of electricity cost will be per month and also how Kuch profits and also losses.

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23125,"Date: 2019-11
Topic: Why my antminer S9 has not mining?????
### Original post:
I am in big trouble. My antminer S9 13.5 th/s has not mining. This problem occured when I press IP reporter button for 5 seconds. Then I tried many ways to recover this problem . I perform reset, reboot but any of these things did not help me. I am really frustrated.Plz help me

### Reply 1:
are you able to log into the gui?

### Reply 2:
did you ever see the gui?better yet do you have an ip search program like angry ip or advanced ip both free for windows.

### Reply 3:
Try to hold the IP reporter again for 15 seconds then release and let the miner reboot <truncated> it from the socket if needed). After that try to scan the IP of the miner again if you can access the WebGUI then make sure to set the pool server again. If this doesn't work and the miner still not hashing if you have access to WebGUI better to paste your kernel logs so that we can check if you are having some connection issue or corrupted program.

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16445,"Date: 2023-03
Topic: I am selling Antminer S 19 XP 134TH. What is more profitable ?
### Original post:
Hello guys, I'm currently selling my Antminer S 19 XP 134TH (<link> I have lost access to cheap electricity and I think that I will invest money from the sale to buy BTC BitcoinsBTC. What miner can I buy more profitable for this money? ($4000) ? Or is it better to invest them in bitcoin?

### Reply 1:
Without cheap electricity buying BTC is probably the best optionHow much do you pay per kw/h ?4k for a S19 XP ?

### Reply 2:
I think that's the only miner that is currently the most profitable according to Whattomine with $0.1/Kwh. For now, I can't suggest if it's better to buy Bitcoin to hold it for a long time or Stay mining since you said you lost access to cheap electricity it won't make any profit but still depends on how expensive your current electricity rate is.Do you mind telling us the current electricity rate in your area?If it's too expensive or above $0.13 per Kwh then it won't make any profit. You can also hold the miner and wait for this machine's price to increase in value to resell them at a high price or hold the unit for a few months until we see the price of Bitcoin rise again until mining with this unit is profitable again.

### Reply 3:
I had the opportunity to receive electricity for about 0.1 per kilowatt, but now the price has increased to about 0.4(high prices in europe ) Yes, I will sell for $4k if anybody interested. Contact me direct to email linked in selling topic if interested.

### Reply 4:
That's the best decision OP, there is no solution to Bitcoin mining if your electricity is not cheap, also Antminer S19 XP is the best Asic miner for Bitcoin mining I don't think there is a better one yet, if Bitcoin was still 15,000$ it would have be better to sell your Asic and buy Bitcoin for long term hold. There is possibility that we could go below 20,000$ again but that's your decision to make.

### Reply 5:
Well, in your ad there is an opportunity to buy for bitcoin, so this sale would be the best deal, given your desire to invest money in bitcoin, I think that you will be able to be in greater profit in the future.

### Reply 6:
I suggest you to invest in bitcoin for taking much high returns without any trouble of electricity and other miner maintenance , Because in this bear season we have a discounted market prices upto 80% off , So fill you wallet with BTC and 20% alts and just relax for one or two years for multiply your money by 4x or higher .

### Reply 7:
It is a good idea to invest in Bitcoin and hold it for long term, as it has yielded high returns, as evidenced by its historical performance. However, for those who are interested to generate passive income through mining Bitcoin, it may be a viable option only if certain conditions are met such as living in a region with low electricity costs or having a personal solar system to power the mining setup. Additionally, it's important to consider that mining requires a significant upfront investment in equipment and requires a consistently cool environment to operate efficiently, which may not be feasible in some locations.

### Reply 8:
It's over then, no cheap electricity means no more reason to keep mining, by the way that's a good Asic miner you have there, people are still buying it unlike the old Antminer S9 that is no more profitable to run, if I am in your shoe right now I will sell the Asic miner and start buying Bitcoin very slowly, the price has gone up right now but a pull back is always possible.

### Reply 9:
Agreed, profitability of Miner mainly depends on electricity cost , which is higher in many countries due to higher oil price, as many countries generate electricity from fossil oil, in such situation it makes sense to sell your ASIC miner, if it is no longer profitable. As far as buying Bitcoin is concerned, it is important to consider market conditions & accumulate Bitcoin by using( DCA (Dollar cost-average) strategy. This can help to mitigate the risk of buying at a high price & minimize the impact of market dips.

### Reply 10:
Now (2023) bitcoin is on the bottom, it is better to take it if in the long term.

### Reply 11:
The worst thing to do is invest in mining equipment when you think this is the bottom just to sell it later on, the price appreciation on mining gears is a lot lower than on the coin itself, due to the following reason.1- Difficulty rises, the profitability doesn't increase proportionally with price, and thus the miner's value doesn't too.2- The miner loses value due to the efficiency race, right now his miner is one of the most efficient gears, a year later, it won't be, which makes it lose value as well.3- The miner's age, the longer it sits there, and the more value it loses.Of course, this changes if it's a matter of selling the miner and keeping the fiat, assuming this is the bottom, then keeping the miner will outperform keeping cash, but if it's the bottom then BTC > mining gea<rest of thread truncated>
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13655,"Date: 2020-07
Topic: Asic.to Firmware S17+ 95th/s and T17+ - 80th/s T17 44t@45w/t • S17/T17/S17 Pro
### Original post:
Thanks Phil, what watt meter do you use? I may look into getting one of those!I have two identical meters like the one I posted. I'll swap and see what it turns up, also do you suppose the leg I have the transformer on matters? it shouldn't since this only pulls 220v unlike say a stove which also pulls 110v for the various electronics, in theory that would have a slightly higher leg amperage wise right?

### Reply 1:
so unzipped with 7zip. no problem. i do only see the S17+. does this work for the T17+?

### Reply 2:
this meter<link> into this cable<link> measures by the hour not instant timeI like to take a 5 to 10 hour measurementsay 0 hour 100.00 10 hours later 122.25you did 22.25 kwatts / 10 = 2.225 kwatts an hour or 2225 watts more accurate then a cheap meter.

### Reply 3:
Thanks again! I swapped the meters, but unfortunately hooked the transformer up to line voltage and vice versa.... POP. UHOH, bad smells...that meter is not happy now .Hooked up original and everything is ok with miner, but it still reads high.I went ahead and ordered one like yours and I will hook it up when it comes and report the results. I like the idea of wiring it right into the cord. I have an extra cord and will wire that one up while the miner runs then do a quick swap. Don't suppose you'd be willing to snap a pic of yours?

### Reply 4:
here is the meter<link> is spliced into this<link> is the cable that would run an s17 with no meter spliced in<link> hour measurements are really accurate.

### Reply 5:
Why is my T17P hashing so HIGH??? This on BM firmware... <link>

### Reply 6:
philipma1957 has your hash rate returned to normal?

### Reply 7:
I can check that by running a low hash rate where the fans turn at 10% or so and then jacking the fans up to 100% and see what the watt meter reports. I'll try that later today too!

### Reply 8:
Is this a pro unit?

### Reply 9:
Meter installed yesterday, here is what I got:62TH/s autotune:asic firmware = 2360old wattmeter = 2550NEW INLINE METER = 49.4 KWH/20 hours = 2.47 or 2470WLooks like firmware wattage reporting is still off by over 100w on this setting, but my old meter was indeed ""hot"" as suspected. I'm going to drop it down to 58TH and measure again and see how close that one is.taserz - The asic reading on your miner was 2532W - why is mine so much lower?freq are 650, 650, and 646.67. Autotune voltage is 18.0. Did yours tune to a higher voltage? 170W seems like a lot.

### Reply 10:
Four fans at 2 amps each and 12 volts = 8 x 12 or 96 wattscontroller is about 10 watts so 96 + 10 = 106. which is just about equal to your 110 watt difference.my guess is the asic firmware at 2360 watts is hash boards only.@coxye. my bad t17+ is still bad 2 of three boards are good.@vr4dude316it is most likely a software glitch. you should always check pool rates on the miner gui and on the pool.it would be nice if the pool gets those high readings like the miner gui shows.

### Reply 11:
yes s17 pro 50T.

### Reply 12:
little question : i have a t17 with a hashboard with 3 defectives ASIC, 27 still ok but the original firmware turn off completly the hashboar. is you firmware can use the 27 asics and disable the 3 defectives one to continue working anyway?

### Reply 13:
I think disabling the hashboard due to a bad chip is not something the firmware does for no reason if you could technically mine with 1 chip why wouldn't they just allow you to do so?Above is an image of T17 hashboard and how do ""electrons travel"", those Asics are connected to one another, every miner design is different, I remember S9s had some different domains of chips where some boards could run with few chips, I don't think the T17 will let you do that.

### Reply 14:
Yeah I wish we could make it work with a dead chip but it takes out 4 with it.

### Reply 15:
Let it run for 24 hours to get your average.

### Reply 16:
Reminder to those helping violate the cgminer license.No one can distribute a firmware that includes any cgminer binary - called cgminer or bmminer or anything else - without providing the source code on request.This is a requirement of the cgminer code.The code is free to use, you can read it, compile it, run it, distribute it, as long as you don't violate the license.Many people put YEARS more effort into developing it than these scumbags violating the license.It is not some random request, it is specified clearly in every file of source code for cgminer.The OP seems to think he can ignore this requirement.He also makes the bazaar claim that he has some dodgy lawyer who thinks he can ignore the license also.That's bullshit. He is wrong.Using his firmware is simply supporting breaking the license and makes you just as bad as him.

### Reply 17:
Not really condoning violation of licenses, but while you are on strike spree, would you mind contacting Bitmain so they can provide theirs?

### Re<rest of thread truncated>
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    ""hardware_name"": ""transformer"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""cable"",
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    ""hardware_name"": ""T17 hashboard"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""ASIC"",
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22895,"Date: 2019-03
Topic: Two s9js with different noises (solved)
### Original post:
I purchased an Antminer S9j arround 3 months ago and what I love about this miner is, it doesn't seem to be noisy at all. I checked the status and the Fan3 is 3700 R and Fan6 2500 R. the label on the fan says SUNON (from China) with a red and white semi-spheresBut I purchased another S9j yesterday and unfortunately it's a lot noisier. both fan speeds are on 4000 R. the fan company is Yate Loon Electrocnics (from Taiwan) with a yellow label why is there miners with different noises ? is it the number of fan blades or it might have something to do with firmware or RPM ?!!

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    ""hardware_name"": ""Fan6"",
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  },
  {
    ""hardware_name"": ""SUNON fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Yate Loon Electronics fan"",
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]"
13656,"Date: 2020-07
Topic: Need tester for S17e / T17e firmware
### Original post:
I have S17e on hand (in bedroom actually as it's too hot to run it currently) and I'd be able to give you access to test it.However, I do not remember meeting you on boards so if someone with higher merit and more active member (than both of us) can chime in and vouch for you, I'd have no problem then.Also, do you plan on selling that firmware later or will you be giving it away for free with fee on running like Vnish?

### Reply 1:
I'll vouch for him, he's fairly prolific on the boards with software hacks of official firmwares. I've not heard of any problems with him.I've got a couple of T17e's but they are remote so no access to third parties unfortunately.The last firmware he released had no dev fee but you had to pay to get it.

### Reply 2:
Thanks i assure to you, no problem with me for the future, i prefer sold this by ""licence"" without any fee .If you are ok, pm me for join me on discord, i need you boot your miner with SDCARD for unlock this by ""mptestfirmware"" , and i need access by teamviewer at ONLY this miner, if you want, monitor me, no problem

### Reply 3:
Not sure if my ""vouch"" counts, but thierry4wd is pretty well-known around the mining board, mainly in the software suboard, I am surprised that you two don't know each other.Do you mind telling us more about the firmware, what does it do? did you manage to unlock the frequency and voltage features? also were you able to alter the temp-sensor to allow hashboards to mine if at least 1 out of 4 temp-sensors are detected?

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22952,"Date: 2019-05
Topic: No hasboard after power shortage - Antminer S9
### Original post:
Hello, one of my miners does not have Hashboard found and has 0 TH/s after power shortage. Also 3 of them has 1-2 hashboards. Before that power shortage(Power went off and then back on after some while) all miners were working just fine with 3 boards 13.5 TH/s.Here kernel log of 0 Hash board S9;I hope someone knows what the issue is and give me some opinions..Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d1<rest of post truncated>

### Reply 1:
There are two possible reasons why you are getting 0TH/s or no ASIC on all chains.- The miner might have corrupted program- Hardware issue on the hashboard or control board or possible PSU not giving enough power.The first thing you need to do to troubleshoot and solve the issue is to follow my procedure below. - First do a hard reset by holding the IPreport/reset button for 15 to 20 seconds it will automatically reboot. Make sure you run the miner in 5 minutes before you perform this hard reset. Set the pool then test- Flash the miner with <truncated> then test it again.If these method doesn't work you might have a hardware issue. Try this method below.- If you have extra miner try to swap the PSU and test.- Check the 18 pin ribbon cable replace them with working one.- Or test the hashboard one by one follow the procedure here Test hash board one by one if you have working s9 swap the hashboard then test.

### Reply 2:
Take a working miner, take all its asic boards out, and then test them all the asic boards from all your miners one by one there, so you can know for sure which ones are working.After that, with a single known working asic board, test your controllers, also one by one (either move the asic board around or the controller, doesn't matter.Its important to test them one by one before continuing, so you know what works and what doesn't.Finally, with a known working controller with its 3 asic working boards, test each psu from all your miners one by one.At the end you are going to know exactly what (if any) asic boards, controllers, and PSUs got damaged (if any), and take informed decisions.Of course this is only with faulty miners plus a good one, if you have several good ones there is no need to check those.

### Reply 3:
If this happened right after a power outage, then chances are PSU and/or those boards are toasted, but you need to go through the normal procedure of troubleshooting, in this order1- Try a working PSU.2- Try a working Control Board.3- Different Firmware.4- Reset.if i had one shot, i would go for PSU , but it could be anything else, so after having done the basic troubleshooting, let us know the results.

### Reply 4:
Thank you everyone for answering. I figured out that dusting was the issue. Its just weird because like 15 miners went situation like that at the same time. The issue is resolved by cleaning them up nicely. Did not know these devices are so sensitive to dusting

### Reply 5:
Eh? Well if you are in a low humidity climate dust might cause static, but it also prevents proper heat dissipation. Schedule periodic cleaning to all your miners, and remember to never let any fans spin (while connected) when cleaning with air blower, etc.

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23343,"Date: 2020-10
Topic: Help: firmware for BeagleBone Black Antminer
### Original post:
What exactly do you want the firmware only for Beaglebone black or are you looking for Antminer s5 firmware?If you are looking for s5 firmware it still available on Bitmain.Here's the link for s5 firmware below.- <link> follow this guide how to flash it <link> if you are looking for Beaglebone IMG I think this link below is what you looking for?- <link> you maybe want it to flash for linux research?Take a look at this one below it includes Pinout diagram and useful guides like flashing the eMMC - <link>

### Reply 1:
I have a BeagleBone Black board removed from the device Antminer S4, S4 +, S5, S5 +, S7 New BB <truncated> Development Board. I want to ask for the firmware to boot from the microSD to convert to other research uses (currently it boo from the GPIO pins, right).Thank you very much for your support.p / s 1: I do not know English well, use google translate for help, sorry for this.p / s 2: I don't know where I should be posting, so take the liberty to stay here. Thank you for the <truncated>

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    ""hardware_name"": ""Antminer S4"",
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    ""hardware_name"": ""Antminer S4+"",
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    ""hardware_name"": ""Antminer S5+"",
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10794,"Date: 2019-01
Topic: Current List of Competitive Hardware - December 2018
### Original post:
List has been updated to include the T15 as Bitmains current product and the most efficient advertised gear @.06 J/GH using their Low Power mode.I will update with the S15 once delivered and on spec.

### Reply 1:
Yes thank you.Got a little busy but I will update the list accordingly. For now looks like Bitmain take #1 and #2 spots, with the T 15 low power mode

### Reply 2:
Sent this to you over PM also<link> biggest issue is the locked down firmware that doesn't allow SSH. If you'd like to know before I get the pictures, LPM is around 900 watts @ ~16V input, controller pulls 12V and hashrate is about 18Th/s. Without LPM it pulls around 1620w @ between 18-20V with the controller pulling 12V and a hashrate between 27 and 29th/s, most of the time it's in the 28TH range.

### Reply 3:
so at 1620/28000 it is 57 watts a ththe m10 is 2400/34000 or 70 watts a ththe s15 cost 1204 plus shipping and maybe taxesthe m10 cost 1022 plus shipping and maybe taxesedge to s15anyone try new firmware for t15 and or s15?

### Reply 4:
That's what the S15 I was referencing was using. The 12/5 version

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16407,"Date: 2023-01
Topic: Mining in the current bear market
### Original post:
Is it the right time to get into mining? The market has crashed and bitcoin is at its lowest, but the miner prices have fallen too. Would it be profitable to start mining with these low miner prices in the long term? What do you guys think?

### Reply 1:
what is your power cost? at 6 cents a kwatt or less I would consider it.

### Reply 2:
Yes if you have the enough resources and cheap electricity cost. Mining is the best way to make profit on Bitcoin during bear or bull market if you can get all your mining rig in discounted price with cheap electricity cost.I have a question to you since you are very knowledgeable on this field. I know miners is getting profit on processing transactions. Does the volume of transaction increase the profitability of the miners or miners just rely on the price fluctuations of Bitcoin to increase the profit for the income coming from mining rigs?

### Reply 3:
Miner prices have dropped dramatically, as you mentioned in your question. Cryptocurrencies are volatile in nature, but a bitcoin mining investment could be very profitable. Bitcoin mining has historically been known as a profitable investment for long-term investors, particularly those who invested during a bear market. It is also worth noting that investing during a bear market may result in a shorter payback period if a bull market follows. Finally, it is up to you as an investor to assess your risk tolerance and make a decision. To help you understand the space better, here is an article about the future of crypto mining that explains where it is headed: <link>

### Reply 4:
In a bear market in some countries, mining can really be attractive primarily because of the low cost (relatively low of course) and most importantly from the fact that Asic's are cheaper in the secondary market, for example, at a price of 7 cents per kWh, the cost of mining 1 BTC is ~ $11,000 for large mining centers.

### Reply 5:
In current market mining is just zero level profit cause Markets are too low and is non profitable. And I think with low budget miners, profit is negligible. And if you are a company than keep doing it cause when btc market will up than you will be in hot profits that is just non imaginable.In 2017 we could mine 0.5 Btc Per month and if someone should hold these btc for a whole year than he could be in more profit than selling regularly in the market.

### Reply 6:
Are you not supposed to get BTC for mining in equivalent to BTC and not USDT? Correct me if I am wrong, But isn't this how mining works? So any time you mine, the amount of BTC stays the same but the price of that BTC changes with market movement. But if the Rig costs less now, then it is just clever to buy them now. And as everyone is saying, try to calculate the cost of electricity and will you make profit or loss.

### Reply 7:
the profit or loss will be calculated when you sell the coin. If you are accumulating and not selling you are simply advancing the money..miners mainly tend to accumulate in these cases, and whoever has more strength to anticipate the next bull will certainly have a more important nest egg.always if there will be a bull run

### Reply 8:
it is a cool chart but is really not accurate at all.says a coin cost 21000 to mine in the usa.power rates in the USA are as low as 2 cents and as high as 45 cents.I am 14 cents and the heat has real value for me so for six months a year may rate is 10 cents.this is in my house not my commercial mine.I have 29 watt gear.

### Reply 9:
Beyond that if you read the fine print it's 9 month old data.So difficulty is way higher then it was back then.When you see large countries with electric rates that vary a lot lumped all together you know it's not accurate.And without knowing if they included cooling, storage or anything else and the fact that they are using a miner that was released in January 2021 it's really not even worth looking at.-Dave

### Reply 10:
If you are living in Kuwait, sure you can have the luxury of mining BTC during the Bear Market but if you are living anywhere in the world where the mining electrical consumption is above the current price of BTC then better to buy Bitcoin in the market. Or if you have deep pocket for the mining maintenance and can hold until the price gets to new height then by all means you can mine at a lost until the market gets better and sell your accumulated Bitcoin.You can check this electrical price charge map in mining 1 Bitcoin.Click to enlargeedit: source of the graphical representation and explanation:<link>

### Reply 11:
We have total 300 Cards RX 580. But its hard to mine now a days. If some one have plan let us know what to mine ? Thanks in Advance. We are now trading our Mined Crypto in Future Market. So if some one have good Future Trading Signals Provider then also share over here..

### Reply 12:
In bear market some issues should affect Mining, electricity, oil and gas.<rest of thread truncated>
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22840,"Date: 2019-01
Topic: Just received newest batch of T9+ connected OK, now can't find IP
### Original post:
I tried both methods of resetting to factory defaults and now the IP of both my T9s won't show up.. No normal status led and no fault led. I had them each running independently then I powered them off to set them up permanently. They wouldn't show on my network anymore.I don't usually post because I use the search function often, and I usually always figure it out.Is anyone else having problems?Does this sound like I've screwed up my networking somehow?

### Reply 1:
If you have shell you can find (and edit) the mac address in the file /config/macAlso, when you are setting static IP, you need to make sure to get the netmask and gateway correct, else you won't be able to access it. For DNS you can use 8.8.8.8 or any server you like.

### Reply 2:
for OP and Sjsminer i made this topic for you guys > <link> it, understand it and you will be able to fix your problem, these are simple and basic yet essential things you need to know if you want to mine, it is important to understand how to manage your lan to avoid such basic issues and save the hustle for other problems that might come along the way.

### Reply 3:
hello - I have 2 new t9+ and one working t9+ that no longer works. I have 1 working T9+ on the LAN. How do I find the MAC address if I can't see the device? is it written on the box somewhere?I have found that I have to reboot my router in a different location in order to get the T9+ to start mining but that fix does not work on my current LAN.Router is R7000.

### Reply 4:
I think you started a whole topic on this issue and we answered you, but again the only way to fix this is by powering on a single miner at the time, give it a static ip that is out of the dhcp range. do this 1 by 1 and all of your routers should show up.

### Reply 5:
You can only find the mac address if you can access the miner. Look at the image below.You can find the miner's IP just shut down or disconnect the other miner and then go to <truncated> change protocol to static and then change the IP to the higher range after that connect the other miners again. Another way is make them all static and edit the IPs one by one just make sure that there is no other miner has the same IP.

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22975,"Date: 2019-06
Topic: A921 and A851 best underclock configs to decrease temp
### Original post:
@ OPYou might want to take a look at the tests I did a few months ago on the A921 here

### Reply 1:
Hey,It's hot here so I decided to undervolt and underclock my miners to try to keep them a little more cold in the summer but I am afraid I can't do that very well. By searching the forums I figured that apparently I have the worst possible models to underclock in all the history of miners so here I am asking if anybody had some success with underclocking these miners.Please keep in mind that the only important thing here is the temperature of the miner and therefore the power burned by the miner and not necessarily the efficiency of it. For example, A921 is normally like 100w/Th and takes 2Kw from plug to generate 20Th; but I don't care if it generates 15TH at 120w/Th as long as it decreases the overall power usage and therefore the temperature while decreasing the hash rate to a reasonable extent.My A921s are currently on the latest MM and controller FW and using the following <truncated> -2 <truncated> -2I get around 18Th for 1.9kwI failed to underclock my 851s which are on the latest MM and controller FW properly. I can get down to 1.5Kw but the hash rate drops to like 6Gh which is insane. Didn't tried the `Balanced` or the `PowerSaving` modes introduced in the latest firmware <rest of post truncated>

### Reply 2:
I'm going to assume you mean TH instead of GH.The latest pi firmware and MM for the 851 will lower the power usage, the 3 modes that they provide are just default frequency and voltage settings which can be over ridden by the user.Can you post the cgminer log file? (copy paste it inside the code tags you can use them in your post by hitting the button that looks like # in the formatting options)Have you also tried changing the frequency while changing the voltage?

### Reply 3:
the A841 was greatthe a851the a921 not greatMy a921 is in a remote area and power cost is low enough I gave up trying to get good number on it.I let it run.

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10883,"Date: 2020-05
Topic: Antminer ‘T’ series vs. ‘S’ series
### Original post:
What is the fundamental difference between the Antminer S models and T models? In particular T17 vs. S17?

### Reply 1:
From what I've read its a slight efficiency difference and hashrate.

### Reply 2:
t17 is one speed and the least efficient models17 is 2 speedss17pro is 3 speeds and the most efficient model

### Reply 3:
S17+ is only one speed?

### Reply 4:
T series have fewer chips clocked higher, for roughly the same power draw but lower speed. They should be less finicky than S-series because, with fewer chips, they also tend to have higher core voltage. S-series miners run the voltage close to the minimum threshold for the speed in order to maximise efficiency, which also means they're closer to the limits of stability.

### Reply 5:
That's the sort of answer I was looking for, very helpful - thank you

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    ""hardware_name"": ""S17"",
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  },
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    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17pro"",
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13665,"Date: 2020-10
Topic: change Voltage & Frequency using cgminer api
### Original post:
Use a custom firmware for S9s, do not meddle with things you do not understand (that tends to end badly for people).

### Reply 1:
I have never used braiinsOS nor Awesome Miner so I cannot give any insight into them, but if you want to manually control Voltage and Frequency, I'd suggest you to try Rocket's firmware.I've used it for about 9 months on my S9 machines before I decided to sell them. Was really satisfied. And now I am using his firmware for S17Pro/S17+.P.S.I am in no way affiliated nor do I have any profit from his firmware. I just like it and that is why I recommend it.

### Reply 2:
Manually controlling voltage and frequency is possible with both: Awesome Miner and braiinsOS. From what I can find on the internet and in this forum, Rocket's firmware seems interesting but does not state any specifics about programatically changing volt and frequency. Doing so from within the webview/browser is not what I am aiming for, as this is possible with a range of firmwares. If you do know about a programmatic way that can be automated I'd be very glad to hear about it! The cgminer API is implemented widely on many different miners. Thats why I want to use it. As an alternative I am thinking about writing a script that will modify the configuration file (eg. bosminer.toml for braiinsOS) on a given miner and restart the mining process via ssh. I just though cgminer API might be a better solution.

### Reply 3:
Not really sure what you mean by that. Can you elaborate?

### Reply 4:
I want to write a software that will adapt frequency and voltage automatically based on availability of energy (coming from the wind), energy prices (changing frequently - every 15 min) and bitcoin price. When lots of wind is blowing, electricity is available plenty and cheaply. In that case I want to run with very high voltage and frequency. When energy is expensive, I want to either turn off mining completely or run with much lower power to still be profitable. (Better energy efficiency - Mhash / J). I cannot sit in front of my computer all day checking energy and bitcoins prices, manually changing voltage and frequrency to make sure I am running on a profit. Thats why I need to automate these tasks and have my software/server configure the miners for me.

### Reply 5:
That is an ambitious undertaking. If it were to succeed it would be valuable for renewable energy mining. Please keep posting if you have any progress with the programming.

### Reply 6:
Sure thing, I will give you an update once I've made substantial progress! In the meantime, if anyone experienced with cgminer API has some insights to share let me know. I Want to explore every possibility.

### Reply 7:
So you have to power cycle the miner pretty much everytime you want to change those settings. Drawback number 1. Also your going to have to autotune for every voltage level and that is going to be a ton on the s9. I would just run the s9 LPM (low power mode) version on asic.to then ssh in and do bmminer-api stats

### Reply 8:
I wrote that document you quoted and the code related to it.It is up to the driver developer to include ascset commands, since each device driver has it's own unique hardware related to that.If BM don't include options to change what you want in the API in their driver, that they added to cgminer, then it's not available at the moment.You'd have to request them, or the only legal firmware release: bOS, to add it to their release.HiveOS, and every other release for BM hardware in this part of the forum, violates the cgminer license.That violation includes the firmware released with awesomeminer.While people like Phil and tazers only care about money and gambling, and don't give a damn about the cgminer license, please avoid joining that crowd of criminals using infringing firmware.Also note the obvious: the price of BTC changes every day every hour.You don't know in advance, what price you will get for all the BTC you generated for the days or weeks up to when you sell it.Pretending that calculations based on the current hourly price and difficulty will directly affect your profit/loss, shows a complete misunderstanding of that.

### Reply 9:
<link> good way to calculate but it's a crap shoot

### Reply 10:
Hello dear fellow Miners,I am trying to understand how I can change global voltage and frequency on my Antminer S9s using the cgminer API. I have been able to monitor all kinds of things, change pools etc. but I don't quite understand the documentation clearly.Could somebody provide me an example?I believe the command below (from the documentation at: <link> might be what I <truncated> (*) none There is no reply section just the STATUS section stating the results of setting ASC N with opt[,val] This is only available if ASC mining is enabled If the ASC does not support any set options, it will always return a WARN stating ascset isn't supported If opt=hel<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17Pro/S17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer S9s"",
    ""hardware_is_owned"": true
  }
]"
16430,"Date: 2023-02
Topic: My USB  SHA256  lottery
### Original post:
HeyI saw many posts around here were people would to know more about a solo mining SHA 256 lottery.I did mine with 2 Gekkoscience Newpac2, a old thinkpad which is running a StorJ node with a 10TO HDD. The CPU solo mine Monero XMR. You will need a powered usb hub to overclock your gekkoscience newpac. I put two cheap fans which I had to increase the overclock possibility.You can use that with a Raspberry Pi 2-3-4. It failed with my Zero W. I use the thinkpad because the STORJ node host on it cover easily all the costs. I personally think that this lottery could really be a waste of time and electricity, probabilities are quite near to 0 to solve a block. But in my situation I have already this laptop h24 running because of the node, so I prefer have this ""Lottery Ticket"" here. If I'll solve a block I would be pretty happy lolI run this lottery on solo ck pool. You will find a list of solo pools at the bottom of this post. You can use these USB sticks with any coin based on SHA256 algo : btc bch dgb etc...etc....How to setup that 1. I personnaly use Ubuntu Server : very stable, not a shitty microsoft windows which will do update/reboot automatically. I advise to use any Debian based <rest of post truncated>

### Reply 1:
I don't know how your post will go over with others in the mining section, but I appreciate your post, OP. You remind me of this guy on Youtube who's always posting videos about using a RPi for crypto-related stuff. What you're doing is probably a waste of time, but man....I really love those USB stick miners, even in 2021. I just wish I'd gotten into bitcoin in the early days when you could still mine profitably with a few of those. And it's weird that the prices of Gekkoscience miners and Moonlanders have shot up in the past year or so. I'm not sure if they're becoming collectibles or if people are actually using them to do what you're doing (lottery mining).Anyway, the chances are against it but I wish you good luck finding a block.

### Reply 2:
There are a few coins out there (mostly scrypt but some SHA) with very low difficulty but some liquidity where one or two people stick mining can actually generate some money.Nothing real, but still $1 or so a day. The issue is that if someone comes in and hammers it one of them with an L3 / S9 or something ""real"" and then dumps. You have to go hunt down the next one, and find an exchange the has it, and a reliable pool. etc. I have a few smaller miners lottery mining but every once in a while I find something else that looks profitable and mine that for a <truncated> hope you get lucky and find a block.-Dave

### Reply 3:
Thank you very much Exact man, I really appreciate Raspberry and minimalist hardware in general ! I am exactly as you, I would love to go back of some years to say to myself buy tons of these usb keys lolI think that when you see them on ebay for more than 100$ it's just of form of gambling from the seller, he hopes that someone who doesn't know what he does buy it from him thinking ""it will be more easy than asic"" and not aware that if you buy them in Germany from bitshopper, it's only 79euros (in April they had stock for example at this price, during the same time on ebay between 180 and 800 euros)Thank you for your good vibes, have a nice day !Thank you very much ! I'll keep you all informed if I am the lucky one one day !

### Reply 4:
Great post and good luck! Here's my lottery rig running on top of my lightning node. Brought it back to life recently. Had a transaction stuck in the mempool way too long during that drop last month and realized I don't feel comfortable unless I'm fully engaged in the network, however statistically insignificant that contribution may be.

### Reply 5:
Thank you, I wish you good luck too my friend !I'm the same as you. I have many TH/s here but I'm still letting go my 90 GH/s sticks haha Have a nice day !

### Reply 6:
i'm actually running 14 of these sticks for now...have a couple more on preorder too haha. Always wanted to get into mining but never did cause i always thought buying spot was better/cheaper/more lucrative. never had any interest in the S9 and stuff like that cause they are loud and ugly.if you use a $1-10M BTC price, then each stick is currently mining like 40 - $4 a day in terms of straight up ROi (using USD not BTC), you'd prob be better off using the money spent on the hardware to buy BTC at spot or lotto mode but I'm using these to mine & hodl forever. its dope to not have non-KYC, protocol issued btc. in about 10-20 years people will be mining what we mine now w/ a couple GH for 50-200 TH which is why i am doing it (plus to learn).plus these look cool, is super silent & friends always ask about it now.

### Reply 7:
If you don't mind, you can share your node URI either in this thread or here. I am willing to open a channel to other forum members. Someone else might be interested in it too.

### Reply 8:
The bo<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Gekkoscience Newpac2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""old thinkpad"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""10TO HDD"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""powered usb hub"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""cheap fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi 2-3-4"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Zero W"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Ubuntu Server"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Moonlanders"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""L3 / S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""lightning node"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""90 GH/s sticks"",
    ""hardware_is_owned"": true
  }
]"
13843,"Date: 2023-08
Topic: Braiins OS+ support thread
### Original post:
Finally did what you needed to do. I mentioned you should do this in your other thread years ago.I have a question will you consider doing bitmain L7?Also I was considering getting some 'better' psu'sthis says it will work with your softwares17 after market psu<link> 2 below do not say they work with your softwares19 after market<link> modded<link> are supposed to be better made but will they work with your software?

### Reply 1:
The only aftermarket psu i know that works right now with Braiins OS, is the Gullpower, specifically the GPW121215-8KW immersion PSU. Some crazy person managed to pull ""Over 9000!"" watts at the wall with it... So the thing does deliver.The development team is also studying the Alphaminers, but for some reason those need extra firmware support, so i don't know when they will get supported. Last time i read they were making the 7kw model work, so i think it should get support sooner or later.I suppose the model you linked was tested by the reseller so they would know, when i get confirmation from a third party I'll add it to the list.Other aftermarket brands/models are unknown if they would work or not. The Gullpower was discovered by adventurous people who just tried.Its the same way others also discovered the Zynq control boards C87 and C84 ""just work"", unlike that Beaglebone and Amlogic trash which imo are a waste of dev time and resources (they should be just thrown out), even if its theoretically possible to make them work, they do suck, very low capacity, poor cpu, etc. For example with the BB tuning takes much longer as it can't do all hashboards in parallel. Even Bitmain won'<rest of post truncated>

### Reply 2:
Fair enough about the L7I will likely order some of those psu's from kaboomracks in the next few months. As I get tired of the s17 psu's burning out.

### Reply 3:
Wouldn't finding a drop-in replacement PSU mainly be a matter of knowing the specs for it? Namely:Output voltage rangeOutput currentMax power out ratingAnd here's the most important bit -- how the controller talks to the PSU to set the voltage output fed to the hash boards and if/how the controller knows what the PSU is doing. Is it simple 0-5v analog coming from a DA converter or analog output port on the SoC? Serial coms like I2C? PWM signal? etc.

### Reply 4:
Actually Frodocooper complained about these bespoke psu's back in 2018 when the s15's came out.it is a pain in the butt if you have cheap power and a slightly older psu dies no one sells them and your gear is no longer any good.I have 0 apw8's sparesI am down to 1 apw9 spareI have 0 apw12 sparesSo keeping older gear working just gets harder.

### Reply 5:
And as I said back then: There are 2 reasons for it.1. Using more PCIe connectors to feed a multi-kw mineris a bad idea. Too bulky and already proving needlessly unreliable because of the connectors being pushed to their limit and adding insult to injury them often being plugged/unplugged many times over the life of a miner and or PSU. PCIe connectors have a very small number of mating cycles before they begin seriously degrading.2. Wall plug power efficiency. Today's best Platinum 12vdc PSU's are what - 95% maybe 98% efficient? Now that 12v was being dropped down via a final regulator on each hash board to whatever Vcore is being used. Typical string voltage was what, 7.5 to maybe 9vdc? At best the on-board regulators were *maybe* 85% efficient so...End result is that by losing the 2nd stage Vcore regulator losses using integrated PSU's that directly set the voltage results in more TH/kW plus by using bus bars it eliminates the high current connection problems. Oh, being able to use a higher string voltage lets ya use longer strings of chips so more TH/Current drawn through the string.The main tradeoff is that the PSU is setting the Vcore string voltage for ALL of the boards. Um, <rest of post truncated>

### Reply 6:
It's because they are cheap, they try to reduce the cost at the expense of other things, I think they set a fixed price for the cost and ask their engineers to design something within that price, all these asic miners manufacturers companies do some stupid shit that nothing justifies it except being cheap.MicroBT do make some solid PSUs and they have a very low failure rate unlike Bitmain and Canaan, but for some reason (probably cost again) they suddenly switched from using 6 flat pins to 4 square pins, so if have a miner that has the flat pin connector when you change the PSU you are going to have to buy a new set of fans and those fans are not cheap, by doing this, they make keeping spare parts a harder job, now you need to have spare fans for both PSU types that are used by the same miner model.

### Reply 7:
Unfortunately no. Bitmain played dirty tricks again.In regards to the ""J"" miners, there are two different ones: Old ones, with pic in the hashboard, New ones without it.You can only recognize the ""New"" one<rest of thread truncated>
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    ""hardware_name"": ""bitmain L7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17 after market psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s19 after market modded"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gullpower GPW121215-8KW immersion PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Alphaminers"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Zynq control boards C87"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Zynq control boards C84"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Beaglebone"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Amlogic"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""s17 psu"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""apw8"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""apw9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""apw12"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PCIe connectors"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Platinum 12vdc PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": false
  }
]"
10901,"Date: 2020-08
Topic: Innosilicon official reponse to Bitmine bankruptcy - Let the evidence talk
### Original post:
Innosilicon official reponse to Bitmine lies - Let the evidence do the talkingOn behalf of Innosilicon Inc, the proud real owner of A1 BTC ASIC and A2 LTC ASIC, I would like to make it clear that we are very shocked to learn that Bitmine shamelessly pointed their finger to us for their business failure due to a series of their own engineering mishaps and reckless business risk taking. Innosilicon has done nothing wrong here and we continue to deliver our quality product even till this date. We have full evidence (email exchanges, legal contract, shipping record, business plans, apology letters etc) that Bitmine management tried to use Innosilicon as scapegoat to mislead their customers for their failure to fulfill their customer orders. We would like to provide full evidence to assist those who filed lawsuit against Bitmine. Our contact info is listed below and let us suit Bitmine liars. The world deserves to know the truth.1. A1 chip came out on time and working. Chips were fully delivered at normal 28nm foundry yield to Bitmine with Bitmine CEO email acknowledgement and appreciation. Full amount of ASIC were delivered and tested with clear grade marking and there is no excuse for<rest of post truncated>

### Reply 1:
I have had nothing but good results from machines using the A1 chip. Thank you so much for your efforts and please get us some new chips and partners for next gen machines.

### Reply 2:
I was pleased with my A2 based machines as well.IS, do you intend to publish said evidence?

### Reply 3:
They withstood a lot on miners. The dragon 1T in many places was put in it's paces and amazingly it seemed to keep ticking. It was a great miner in it's time.Only weakness was they went with low quality PSU, but I can't blame them to much for that I'm sure it was a business decision.

### Reply 4:
That is a heck of a story if this is true. Can you go into more details?I mean it seems customer would have the chips before they could test. If they shipped grade based on region that is a huge thing to suggest.

### Reply 5:
Clarifying:First would like to say Hi to ""A"" Innosilicon"" and to G&C Bitmin.ch. WWhat am about to say will definitely get some ppls upset, even though am trying to stay neutral and anonymous, some ppls might have clue who is writing those lines.The fact is that YES InnoSilicon indeed manufactured (well they didn't Taiwan foundry did ) grade A,B,C,D they HAVE INDEED provided on purpose grade ""D"" IC's to Bitmain.ch.they sold grade ""A"" in China local market and were laughing about it saying ""you want buy from Swiss guys go ahead we only gave them Grade ""D"" IC's all grade ""A"" were sold locally and at a extremely low price to a HUGH local reseller (which no need to state the name here but all know who am talking about)that kept the biggest part of the market.They actually sold IC to this Chinese manufacturer about 2,3 times cheaper than they sold to Bitmain.ch.They have ""demonstrated "" to Chinese customer how to test IC, saw demonstration in my own EYE.Test Procedure: ""put multimeter on NEUTRAL, use one side of the multimeter on the outside of the IC other end inside the IC if the result is less than 0.4 IC is shit. etc ...Mr ""A"" is a clever guy my opinion is that they used Swiss money <rest of post truncated>

### Reply 6:
Asking Bitmin Why didn't you test IC's before?They replied: IC's come in batches of 5000 we cannot open them they are sealed, only foundries knows what they preduce.Issu is that this grades from what Bitmin.ch said, they were not aware of that. Later only found out that the Reference No on the IC itself was a ""code for grade"" A1....-6 was grade A A1...-3 was grade C etc ...Makes it impossible to test IC manually 1 by 1 knowing 1 miner 1T needed 40 IC's normal mode and 32 IC's Turbo mode. would have taked how long to test 50 000 IC 1 by 1.

### Reply 7:
I think the bigger thing is saying they kept high grade for local market. I would agree testing a batch of chips would be a lot of time, and only done if they thought it was crap chips.Do you have any proof of anything you have said?

### Reply 8:
If you have that many evidences, simply post the Evidence that you send A-Grade chips to Bitmine.

### Reply 9:
Again, I would really like to see the countless documentation of evidence that Mr. Joey Jiang of Innosilicon talks about here. Innosilicon is trying to protect their reputation as a business and I can understand that but they are also in possession of stolen money in fact! Bitmine took $Millions from their customers for pre-orders, and then paid $Millions to Innosilicon. Your really not-so-Inno-cent because regardless of what went down you still took money from a lot of people and those people did not get what they paid for. It does not make it right just because you can now point the blame back on Bitmine. Your still in business and Bitmine is not. They have g<rest of thread truncated>
","[
  {
    ""hardware_name"": ""A1 BTC ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A2 LTC ASIC"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""machines using the A1 chip"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""A2 based machines"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""dragon 1T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""low quality PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""IC's"",
    ""hardware_is_owned"": true
  }
]"
13658,"Date: 2020-08
Topic: Restore S9 control board with ""Hiveon Asic"" back to original firmware
### Original post:
Great stuff, this is actually how to Sdcard flash pretty much all miners, so you might want to change the subject for better SEO optimization.The only difference is that the new models like the 17 series and even the K and SE versions of S9 is that there is no jumper to be changed, the control boards are made in away so that when they sense an Sdcard in the slot - they use it to flash the files on the card instead of booting the installed firmware.But wait, why did you have to go this route? did HiveOn lock your miner? as far as I know all custom firmware are not locked and you can easily go back to stock firmware, but if Hiveon does that then they probably deserve a negative feedback on their profile until they solve this issue.This isn't exactly correct, you can pretty much do with any size, Bitmain recommend 16GB or less, I know it will work with large SDcards too, the smaller the better but if you have no options, work with whatever you have available.Thanks for sharing this great content.

### Reply 1:
I searched for ""Hiveon Asic"" and I found a milion instructions on how to get it on the miner. Instructions on how to uninstall that was nearly zero.On github I found out a one liner, telling me to type ""uninstall"" but I did not know if the ""backup"" is stored on the miner itself (flash) or on a pc connected with that ""Hive OS"" and I still don't know.Well, I bought that miner via ebay from a unknown source, I would not trust anything wich is on the miner itself because it is not locked. So I decided to only use the original files from bitmain just to be secure.I did use a 16GB sd-card at first, but it won't work (ultra sd sandisk), so I took an old 4GB former used on my raspberry pi and geparted it to fat32 and all went well.Thank you for reading and coment, what titel would you suggest?

### Reply 2:
This is probably because HiveON is relatively new and not enough people know about it anyway, also the search keywords could be focused on how to restore stock firmware rather than how to remove HiveOn, any way you made this guide so it's no longer zero.Most certainly, I always tell people to Sdcard the heck of any used mining gear they buy as many of them come infected, you have another option which is flashing Bitmain stock firmware via the web GUI but the miner needs to be on a quarantined LAN/VLAN, in most cases going with an Sdcard flash is easier.Been there done that, every time I try to flash a miner using an Sdcard I have to try a few of them to get one to work, and then I lose it, a few months later I go through the same shit again, but based on my experience the size isn't the issue, it's just some Sdcards don't work for this thing, so when you find a Sdcard that works please hold on to it.Maybe something like ""Restore Bitmain Orginal Firmware Using Sd-card""?

### Reply 3:
I did isolate the miner in a vlan as a precaution, and I had to use wireshark to find the fixed IP the miner was set to (the seller didn't included that information).Thank you, I changed it to it.

","[
  {
    ""hardware_name"": ""S9 control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""17 series"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""K and SE versions of S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""16GB SD card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""4GB SD card"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ultra sd sandisk"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""raspberry pi"",
    ""hardware_is_owned"": true
  }
]"
23042,"Date: 2019-08
Topic: One psu, two systems
### Original post:
Hi,Is it possible to have a antminer powered by the 6x2 pins, and then a normal pc board by its 24 pins, 8 pins, and sata?While it is possible to power multiable antminers with one psu, is it also possible to power a antminer and a normal pc?Regards, sidboy55555.

### Reply 1:
Simple answer no it is too hard to do.Complicated answer is if the miner is a low power miner. Maybe it works.You need to never turn off the pc as the psu would not power the miner.You need to have a modified miner such as my 1 board s9.My 1 board s9 design as a space heater would be exactly the right gear to run.

### Reply 2:
As long as the PSU has the power to run them both and you use ALL of the PCIe connections on the miner, sure. Does your PC have over 1.5kw of unused power reserve to feed a miner? Seems rather pointless though as the PC will always have to be on even it you are not using it.Much easier to treat and power miners as what they are - stand alone devices.

### Reply 3:
If he runs the pc mining with GPUs it could work.I mine sidehacks R606 and 3 new pac in a hub. Along with a pair of GPUs and the cpu all off the pcs psu.It is complex but it works.

### Reply 4:
The pc is gonna be 24/7 on anyway, so that's not the problem, my psu is 1800w. so the psu can handle it if it comes to power. but further more, is it possible?

### Reply 5:
Okay a 1800 watt psu made very well can do 1400 watts non stopSo if you are going to run an s9 dont run it at full speed.The latest s9 has May firmware from bitmain.It can be set to about 10th and use 900 wattsSo the psu would have about 500 watts to spare.May firmware for the s9 from bitmain is hard to roll back.I have 2 of 22 s9 set on May firmware. As I dont like locked in firmware.But in your case locking a s9 into the May firmware could be good for you.

### Reply 6:
Sure. All the miner cares about is good 12vdc power. It has no idea of anything else that is connected to the power source. If you can feed the needed power the miner will be happy.Just be sure that your PSU has only a single power rail feeding the PCIe plugs. Using supplies with multiple high current 12V rails (internal power sources) is asking for trouble.

### Reply 7:
This looks over-complicated. I don't see the point, but yeah, you just need a 12v to atx dc-dc psu...The motherboard and satas need not just 12v but 5v and 3v, and your miner PSU isn't providing that.Of course there are exceptions. Rather than a regular PC, you could find something that can be fed 12v, something embedded or even a laptop like thing and has its own stepdown transforming inside to feed sata etc.Capacity wise i guess its just like an extra hashboard, assuming you aren't doing something particularly intensive there, such as gpu mining lol).

### Reply 8:
I don't have a mining psu, I have a mining edition of a pc psu. so it worked.

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    ""hardware_is_owned"": true
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""12vdc power"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""12v to atx dc-dc psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""mining edition of a pc psu"",
    ""hardware_is_owned"": true
  }
]"
24078,"Date: 2023-01
Topic: firmware with configurable frequency for antminer s9?
### Original post:
I found an old thread from here for a custom firmware, but the google link for the binary was dead. I also found the bitmain <link> firmware page, but chrome says ""virus detected"" so not sure wth...also, there were a ton of options, so wasn't sure which one to download.My idea is to lower the freq to run it at around 1000W with 120v.thanks in advance

### Reply 1:
I never tried to run s9 miner with 120v but I heard someone can run it without a problem. You just need to remove the 2 hashboard and let it run. Or use Braiins OS to adjust it to low power or set the wattage you want.

### Reply 2:
oh I see, so instead of lowering the freq across all boards just run less of them?

### Reply 3:
You can run it without removing the other hash board but expect some wires to be melted if you run it at 120v.And there is no problem running s9 with only one hashboard based on what I heard.Why not adjust the working mode to try running it with 3 hashboard? If it won't fry some wires and hash board your lucky.The latest s9 firmware has multi-option under working mode you can underclock the unit to run it at low power mode.Or if you want to manually set the power as I said above you need to flash it with modded firmware like Braiins OS.

### Reply 4:
That would be an option too, but you can also use custom firmware like Vnish or Braiins to underclock the miner to the point where it's safe to run on 110v, it also depends on what PSU you have, even the stock PSU models have a different rating, APW7 and APW3 have different capacity, you need to read the specs on the PSU I think it's 900-1200w for 110V.You could also use stock firmware, there is one called multi-option user firmware, this is the link from the official bitmain website <link> you can try to lower the hash rate by 1-2-3 terahash or go straight to the LPM (low power mode) which does about 80w/th and gives you 9th, so close to 720w which I think would be safe to run on 110v, but please make sure to read the specs on the PSU and also make sure to measure the power at the wall because the 80w/th is just a general number, every miner has its own numbers.And don't run any non-Asicboost firmware, even Vnish comes with AB disabled (no clue why they do it), running stock setting without AB will surely pull over 1350w (more like 1400w) which is likely way above the max of Bitmain's PSUs on 110v.

### Reply 5:
Or use mine, its fully free and open, and contain AB, make 800mv on voltage and 475mhz on frequency for start, run with 3 hashboard without any problem on 110V , its take arround 750w

### Reply 6:
From which original fw version was AB activated?

### Reply 7:
Around 2018 after Braiins OS was released they did as well.

### Reply 8:
The publish date of the first Asicboost firmware by bitmain was 2018-10-23, and the firmware/file name is <truncated> the other 4 versions that came out after this also had Asicboost enabled by default.

### Reply 9:
Or just go get the free versions from Bitmain, that don't charge you a fee to run them, that also do various performance settings and have done it for years.<link>

### Reply 10:
Does anyone know how to adjust the power consumption in detail?

### Reply 11:
Hi guys, I am currently making an S9 radiator haha I will need a firmware with immersion version for the run without fan (that easy to find) on the other hand I have a particular request, is there a firmware with a reduction by chip temp?Example if I lower the extractor with its potentiometer, as the chip will heat up (example set at 85c) the miner will lower its frequency to come back to the target temperature?Thanks in advance

### Reply 12:
Vnish or Braiins OS firmware has this feature called auto-tunning you can also manually set the frequency/power of every chip on the hashboard.Here's what it looks like But auto-tunning is awesome it automatically reduces the frequency of overheating chips until it turns green or low temp.

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    ""hardware_name"": ""S9 radiator"",
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23095,"Date: 2019-10
Topic: Need to throttle S9, still pulls electric load when the CAT5 is dropped
### Original post:
We have a need to shed load when demanded by the power producer. Short of just ""pulling the cord"", it seemed that we could drop the connection to the S9 and it would idle; however, our power monitor still shows full load. Any ideas on how to throttle down on demand (a script would be great)?Thanks

","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power monitor"",
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  }
]"
13651,"Date: 2020-05
Topic: Software for Antminer; power boost by 15-45%
### Original post:
Greetings to all!We are developing software for mining equipment, which will help increase the efficiency of your ASIC by 15 - 45%.Here are our sample results:S9 increase to 73-80w / 1TH;T9 + up to 100w / TH;L3 + up to 1.25W / 1MH.S17 / S17Pro up to 29w / 1TH;T17 to 39w / THWe also launched a monitoring and remote control system.The software is freely available for download on our website.

### Reply 1:
What is your site?Freely available implies free to get, but does it have any fees included?also, any proof?can you add some photos of it running?

### Reply 2:
Greetings. We are MskminerHere is a link to our firmware, depending on the firmware, our commission is from 1 to 2.8%: <link> english version of site in process.

### Reply 3:
Why don't we talk about the miners that caught fire using the firmware you tested on the public that you avoid everytime it is brought up.

### Reply 4:
It was only 1 case, when ASIC burned out at an early alpha-version. And we compensated all costs to client for repairs.

### Reply 5:
Hi , T9 + jusqu' 100w / TH; ? Is not good value, i have runned all my T9+ at arround 90w / th and with my mod (free release) At this time, why need to paying dev fee ? custom firmware for S9 and T9+ are releasing for totaly free (brain os, custom files, bitmain) .

### Reply 6:
hi, sorry i don't have a proof i don't have this on my hand for make power mesurement ... for proof just test my mod on all firmware, wattmeter is only estimation, not look the temp for make value, on the S9 an T9+ is very sensitive by temp / power ... in absolut, the miners don't have real wattmeter physical But , good luck with your work

### Reply 7:
Hi. show the proofs please, that t9 + chips are the same as c9, on which we have up to 75W/TH, but the power scheme is such that energy efficiency is worse.We also have unique functionality in firmware - protection against viruses and overheating, a power meter, a profile switching schedule, auto tuning, consumption schedules, a power meter, uptime and other functions.Better than on our firmware with chip tuning, in automatic or manual mode, you cannot tuning ASIC to another.

### Reply 8:
... and do you release source code for the miner in your release as you are required to do, or do you violate the cgminer license like everyone else around here that includes cgminer/bmminer in their firmware?It doesn't matter where you get your firmware from that you hack and slash and put share stealing in,If you distribute a firmware that includes cgminer/bmminer in it, you MUST provide the source code upon request.

### Reply 9:
Thank you, I wish same to your work too

### Reply 10:
why do you address this request only to us, and not bitmine or asic.to? as soon as bitmine does this, we will be ready to open the code as well.

### Reply 11:
You cannot distribute firmware without the cgminer source code.Doesn't matter what someone else does.You cannot.I also regularly post this in most of the scumbag threads around here that do the same thing as you.Including asic.to ...<link> argument is the same as saying: since there are murderers out there, you should be allowed to murder also.Obviously that's not the case.

### Reply 12:
Because there is no dialogue to be had. cgminer is protected under the terms of GPL license. Said license has no provisions stating anything like ""but if someone else breaks copyright and their (violating) work is used by yet another party for a different project then it is ok to also break copyright"".

### Reply 13:
Sir, you are clearly not in the mood for constructive dialogue.

### Reply 14:
Nope it is not okay. But by your logic what miners are okay to use?Not bitmainNot bitmain moddedNot innosiliconMaybe sidehack usb sticks and his r606Avalon was out of compliance I think they are back in. Not sure.So to be okay I need All inefficient miners and free power.Lets try it a different way list the compliant miners to the license.And I know enough about law to say a partially compliant company it not the same as a fully compliant one.So as I type are any companies fully compliant?If so who.Which company has not violated the license?As I have said I am pretty fucking stupid. Maybe I missed one.

### Reply 15:
You are 100% correct - aside from Canaan (up to the A10xx) and Sidehacks miners all of them are in violation of GPL. As I said in the other thread There of course comes a point where it is useless to rail and rage against the storm and for a LONG time he did just that esp against Bitmain until begrudgingly having to accept How Things Are.However, if he wants to run a pool then accepting How Things Are to use the major brands as-shipped comes with the territory. Supporting a handful of miners that further violate license does not. His pool - his choice.

### Reply 16:
There is no ""further"", violation is violation, if both Bitmain and Vnish were taken to court for refusing to relea<rest of thread truncated>
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  {
    ""hardware_name"": ""S9"",
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  },
  {
    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""L3+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17 / S17Pro"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""T17"",
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22988,"Date: 2019-06
Topic: S9 no not show temperature
### Original post:
Hello my friendsI have a hashboard of s9 that don't show temperature (show a blank_)Plz help me to solve this problem I have a lab to repair boardsThank you

### Reply 1:
Maybe your hashboard temperature detector is damaged that is why it showing no temp. It is still hashing? Try run the hashboard first one by one because sometimes if the one hashboard detector is dead it may lead to other hashboard to experience this temperature issue.Also, post your kernel logs here so that we can analyze the issue as additional info.

### Reply 2:
Yes but there should be temperature readings from two sources: From the hash board, and from the asic chips themselves. Firmware from around 2017-2018 should be able to report both.You can also try booting Braiins OS from an sd card to see what it shows. This operation only requires you to use an sd card and move a jumper. Take out the card and move back the jumper and its like nothing ever happened.

### Reply 3:
Well that's more than normal on S9s , the temp sensor burns real fast and usually no matter what you do to fix it on a software level simply won't work, I simply don't worry too much about it.as long as the other hash boards show the temp, the temperature on the board that shows no temp is pretty much the same as the other once, it's very seldom to see a wide difference in temps between different boards on the same miner.but if you can, try a different firmware , maybe you will get lucky.

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23307,"Date: 2020-08
Topic: These sites are safe for overclocking T17 , S17 ?
### Original post:
These sites have firmwork for overclocking for T17 and S17? are they safe? any experience or try these sites firmworks? <truncated>

### Reply 1:
Never heard about either of those. Better to avoid unless someone has good experience with them.Why you do not use one of available and trusted firmwares from this forum?

### Reply 2:
Probably not, I have never heart of them, aside from thierry4wd ""hacked"" versions of some of the original bitmain firmware or Vnish (Asic.to / Awoesmeminer there isn't another firmware that's widely known around the mining community in this forum at least.In addition, why on earth do you want to overclock your T17/S17 gears? a while ago I replied to your thread complaining about losing a hashboard on your T17+, all of these 17 series gears have terrible solder/adhesive and overclocking them will only speed up the process of toasting those hashboards, if anything you should be looking for underclocking rather than overclocking, but hey, your gears - your call.

### Reply 3:
Well mikey, people usually say ""overclocking"" when they mean both OC and DC (or UC - whatever you want to call it) but yeah, it is true that overclocking 17th generation of Bitmain miners is not a smart thing.

","[
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]"
16583,"Date: 2023-09
Topic: Report: Prices of Mining One Bitcoin Worldwide
### Original post:
So, I stumbled upon this CoinGecko article titled ""Household Electricity Costs to Mine 1 Bitcoin at Home, Around the World"" (<link> and honestly, I was pretty intrigued by it. They've got this report that lists which countries make mining 1 Bitcoin super profitable and which ones, well, not so much.Without further ado, the top 10 countries for profitable Bitcoin mining are:1. Lebanon - $266.02 (electricity cost to mine 1 BTC in USD)2. Iran - $532.043. Syria - $1,330.14. Ethiopia - $1,596.125. Sudan - $2,128.176. Libya - $2,660.217. Kyrgyzstan - $2,660.218. Angola - $3,724.299. Zimbabwe - $3,990.3110. Bhutan - $4,256.33And the most unprofitable countries to mine 1 BTC are:1. Italy - $208,560.332. Austria - $184,352.443. Belgium - $172,381.504. Denmark - $166,795.065. Germany - $163,336.796. Ireland - $159,612.507. Lithuania - $152,163.928. Netherlands - $137,798.799. United Kingdom - $130,616.2310. Cayman Islands - $128,222.04Here's a nice graphic.They did some pretty serious calculations to figure out how much electricity it takes to mine a single Bitcoin. They considered eight different ways people mine, each with its own hash rate, and then they looked at how long it usually take<rest of post truncated>

### Reply 1:
using difficulty is a little bit of a guess.. as is playing around with the different asics and also doing it based on solo mining which without guessing the difficulty of the next 7 years. you cant actually guess the cost of solo mining over seven yearsa better method is to look at the average network hashrate of a 2 week point..then simply divide that down by the average asic speed of current gen asics. to see the average number of asics runningthen knowing how many asics are probably mining at any time they can look the cost per bitcoin of the network (as solo mining is a whole different ball game)EG their list of asics Thash KWH hash/KWHBitmain Antminer S19 XP Hyd (255Th) 255 5.3 48.11320755Bitmain Antminer S19 XP (140Th) 140 3.01 46.51162791Bitmain AntMiner S19 Pro+ Hydro 198 5.45 36.33027523Canaan Avalon Miner A1366 130 3.25 40Canaan Avalon Miner A1346 110 3.3 33.33333333MicroBT WhatsMiner M53S++ 320 7.04 45.45454545MicroBT WhatsMiner M53 226 6.55 34.50381679MicroBT WhatsMiner M33S++ 220 6.82 32.25806452 average hash/kwh = 40 TH/kw (rounded)average <truncated> used with 6 blocks an hour and 6.25btc a block = 266667KWH /btcafter doing these calculations this way. you wil find <rest of post truncated>

### Reply 2:
This is inaccurate. The price of electricity for homes in Iran is about $0.001 per kilowatt hour but that's for the home users and the KWH they'll use. A miner uses more electricity which means the rate will enter an automatic step-by-step price scheme where each time the usage surpasses the next step's threshold the price increases. I believe the ceiling is $0.03 per KWH though.Additionally big miners have to follow the regulations which have changed a couple of times over the past couple of years. Basically in these contracts they receive special rates for their farms which depends on a bunch of factors. For example it depends on the month, during the peak usages in summer their rate is equal to the export rate which I think is less than 5 cents; and in the rest of the year the rate is half that.Another factor is their source of electricity. If it is the national grid the rates are as I said before, otherwise they could use renewable energies, start their own power plant in which case they'd receive super cheap gas which can be as low as $0.0008, or participate in the building of new power plants using the gas flares to produce electricity and get it practically for free. Althoug<rest of post truncated>

### Reply 3:
I dunno, you better have some backup generators available if you are mining in these areas, since the electricity is unpredictable and can usually gets knocked out for long periods of time.Also like pooya87 said, these prices don't take into account extra requirements and regulations for businesses. You can't just start a mining farm in these places and connect it to the grid, you have to explain why you are using so much electricity.

### Reply 4:
starting own power plant.. yes the fuel is cheap but the conversion to electric is notsame as gas flaring. it seems like free energy but then you have to include the equipment to turn burned gas into electric. also flared gas pipes only release a certain amount of dirty gas which is not enough to power a whale asic farm per flare pipethe trials of 'flare-mining' is small scale mining per site (less than a shipping container per pipe)much like this topics failure.. it fails to include the device/equipment and maintenance cost.. which is why it does not actually cost $266 to mine bitcoin in lebanon

### Reply 5:
No reason to be intrigued it's the same thing as discussed a year ago<link> it's just a bit of BS moving two values in an exc<rest of thread truncated>
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  {
    ""hardware_name"": ""Bitmain Antminer S19 XP"",
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  },
  {
    ""hardware_name"": ""Bitmain AntMiner S19 Pro+ Hydro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan Avalon Miner A1366"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Canaan Avalon Miner A1346"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT WhatsMiner M53S++"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""MicroBT WhatsMiner M53"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""MicroBT WhatsMiner M33S++"",
    ""hardware_is_owned"": false
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]"
24069,"Date: 2023-01
Topic: S17+ hashboards keep failing
### Original post:
Hi everyone, I have multiple S17+ (73TH) miners and all of them after a few weeks of running show that one of hashboards has 0 chips found. I then will swap the boards around and they will run fine but then again one of the hashboards show zero chips. I normally would blame the board but recently I have had two new boards stop working after a few days. I am not sure why these new boards keep going bad and I dont have any devices to check them. The only thing I can do is swap them around and it doesnt make sense to me why they work for a few days and then stop. I am running BRAIINS software on all machines. I suspect it may be the control board but I dont know how to test that theory.Any troubleshooting advice would be appreciated.

### Reply 1:
Hashboard shows 0 chips usually due to abnormal power supply or chip short circuit. Others will have more helpful suggestions if you can provide kernel logs. .

### Reply 2:
Sometimes it is due to overheating your room doesn't have proper ventilation you need to take the heat/hot air out of the room.PSU is might be also the culprit but without the kernel logs we can't determine exactly what your miner issue is. Also, if you can access the dashboard copy the kernel logs and paste them here with ""insert code tag"" a # sharp button while editing your posts so that it won't look messy. Or you can use pastebin.com to paste the kernel logs there and share the link here.I have a few suggestions would you mind trying to flash it back to stock firmware and test it if it's running fine. If yes then possible you overclocked the miner with braiins OS that turn one of the hashboard overheating.

","[
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10897,"Date: 2020-07
Topic: (Review/Guide) AvalonMiner 821 11.0 Th/s, 1200W Bitcoin (SHA-256) ASIC miner
### Original post:
Thank you for review. Why your fan is running at 100% with such a low temperatures 27 / 75 ?

### Reply 1:
Thanks for the comment. It is just because of the way Canaan has programmed the fan control algorithm in the firmware.

### Reply 2:
Might be interesting to see if it works with voltage offset +1 and what is the hashrate and power consumption.

### Reply 3:
@ Logan4elI might look into it later.I tried my best using my Microsoft Word skills and I made an nicely formatted version of this review/guide,which is more pleasing to eyes and can be printed to paper easily if needed.Link is available in the opening post.

### Reply 4:
Nice review.So you tested at 0 offset correct?does this gear offer+10-1-2options as did the 721 and 741?I am curious to see if the -2 and or -1 offset get us to .1 at the wall or even 0.098 at the wall.11 at the wall is pretty much equal to or better then an s-9Alas the price point is very high I may not order any.35000 usd for 10 units delivered in march is far too much money for me.

### Reply 5:
Thanks for the great report.I hope in future Software updates the fans can be adjusted to auto mode so they do not run 100% all the time due to noise level. Or temp limits could be adjusted.

### Reply 6:
Nice review Haggsfin, I'm a little surprised with the voltage offset results.

### Reply 7:
Thanks.Video tutorial links updated, there are now two tutorial videos available.

### Reply 8:
The 741 got a software tweak and the offset improved.My guess is the 821 will be tweaked for fan and power use.Nice gear same solid heat sinks as older models. Price is high but I may order in the future.

### Reply 9:
Hopefully Canaan comes with a similar software tweak to improve the voltage offset effect in the A821 performance.

### Reply 10:
Seems like 821 will be EOL soon. Just received Canaan newsletter about shipping 841 in April. The performance is estimated to be 13TH and 1200 Watts.

### Reply 11:
Nice pics & review. Out of sheer curiosity, I wish you had taken pictures of the other side of the 2 PCBs that hold the PCIe power connectors It looks like you might have the first 821 released to the public. Is this correct?

### Reply 12:
I don't know if this is the first, but this is one of the engineering sample units without a tech specs label printed on the miner.

### Reply 13:
Excellent review!Got notice yesterday from Blokforge my 2x 821's are on their way via FedEx, should arrive next Tues. Good timing on that as 1 of my old s9's (b3) decided to go off line for a few hours today...

### Reply 14:
Yeah, they might switch their focus into the A841 model quite soon, which will be most likely at least 13 Th/s with 1200W power consumption.ASIC chip for the A841 model will be the same one used in the A821 (A3210).

### Reply 15:
Thank you, much appreciated. Nice to know that Blokforge orders have started shipping.

### Reply 16:
Got my Avalon 821 up and running for 48 hours. Software lets me adjust voltage and with -2 the miner still runs with 11,34TH/s. Superstable:)

### Reply 17:
I think if you look at the above, you'll see that -2 on the 821 isn't the same as -2 on the 741. Most are reporting *higher* hashrate and wattage at -2, than 1. Makes ya wonder if they got the values reversed in their firmware...

### Reply 18:
Thanks Phil! Much appreciated.

### Reply 19:
My one complaint is that pdf is pretty much perfect I sent you 7 Merit points as it is a beautiful piece of work.

### Reply 20:
Thank you and great review on the 821. Just what i was looking for.I noticed that the fan is running at 100% all the time and was interested in the noise levelsAre you able to show the decibels these units <truncated>

### Reply 21:
<truncated> I don't have a proper sound level meter,but I'm estimating that the noise level is at least 65dB (as advertised at www.canaan.io) , when the cooling fan speed is 100%. Most likely 1m distance is used for the advertised noise level measurement.

### Reply 22:
I posted a note about the voltage offset in the Avalon 8 official specs thread (<link> looks like the values for voltage offset enter on the CGMiner Configuration page are being ignored and the offset and some other settings are getting applied to the command line of the cgminer. Try entering a value there other than zero and look in Processes - at the bottom of the list you should see the cgminer command line and it always has offset of 0 hardcoded. It looks like we can override if we use ""More Options"" with <truncated> -2"" (figured that out by taking akadamson suggestion and then finding the developer documentation for cgminer on Canaan's github.For those who don't know or are new to this, the command line options can be found here (just look for the avalon7 options and maybe the options for avalon8 will be similar): <link> far it is running around 80% fan speed (it was 100% before) with chip <rest of thread truncated>
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    ""hardware_name"": ""AvalonMiner 741"",
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    ""hardware_name"": ""s-9"",
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  },
  {
    ""hardware_name"": ""s9 (b3)"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""ASIC chip for the A841 model"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""A3210"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sound level meter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cgminer"",
    ""hardware_is_owned"": false
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]"
24084,"Date: 2023-02
Topic: Cgminer install on a Mac
### Original post:
new to this process and learning more and more.But I've gone to GitHub<link> installed everything under terminal till the API and now I'm lost...... (copy)Accessing the <truncated> access the API it is easiest to install Java<link> you have enabled the API e.g.--api-enable --api-allow ""W:127.0.0.1""Then in a terminal after installing and running cgminer:cd <truncated> API estats(copy)I downloaded java yet still don't understand

### Reply 1:
HelloOn kano's website you will find a lot of infos about API and cgminerNot the same way you started with, but looks easier like that

","[
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10837,"Date: 2019-08
Topic: BITMAIN AntMiner APW3-12-1600 PSU Series
### Original post:
Very nice and official PSU Link = <link>

### Reply 1:
I don't understand why other PSU manifacturer never offered a mining PSU.

### Reply 2:
Good job, Bitmain! Is it an allusion to your new not yet announced 1U miner?

### Reply 3:
No, its the same PSU in the S4+, which is 3U.

### Reply 4:
PCI-E cables 16AWG or 18AWG?Noise? and at what fan speed?Fan speed variable or fixed?Who is the original manufacturer?

### Reply 5:
S4+ sales must be terrible if your resorting to this. Maybe you should lower the S4+ price and we would buy them.

### Reply 6:
Good question, I'll try and find out. The spade connector version used 10AWG.I couldn't notice the fan noise even during a 45C ambient test, unsure on the RPM but its not quick.This unit can 100% load @ 50C and 80% load at 60C so I would have thought it was variable to hit those higher numbers.I doubt they'll say who the OEM is.It was always the plan to sell the PSUs.

### Reply 7:
sorry bitmain but at that price used server class delta psus is better option

### Reply 8:
<link>

### Reply 9:
and please show me a delta server with a breakout board for 12 pcie connectors they said 12 pairs in the copy but I think they mean 12 connectors.that does 1600 watts at 92% efficencywith a 1 year warranty .cost 155 usd.My issues are not with price .Quality control based on the post above yours .and does it do 92% at 1500-1600 watts?does it do 93.8% at 1200 watts?last question is are the wires 16 gauge? I could see someone running 2 s-5's and this psu have issues if the wires are 18 gauge.

### Reply 10:
Its 18AWG.

### Reply 11:
not good but thanks for an honest answer.if I buy this with 2 s-5's I will be pushing the wires at freq 375 and higher.btw 1 of these psu's and 2 s-5s is 911 usd with shipping1 s4+ is 1071 usd with shipping

### Reply 12:
In that case it would seem appropriate to provide a maximum amperage per connection in the specs and make it clear, it could be dangerous for your customers if not..

### Reply 13:
18AWG? Gross. Though 1600W at 12 cables is only about 4A per wire... That'd be good enough for most things. I'd like to see one of these hooked up to some Neptune cubes and watch the entire setup burst into flames though.Also, Phil, how does my DPS-2000BB breakout board and PSU stack up to your criteria? The efficiency might not be quite as good, but the board holds 12 cables natively (I've run 16 without issue, pushing two Prismas per PSU) and a kit costs less than $155. We don't 1-year the PSU (90 days typical for used equipment) but lifetime on the board and cables. By the numbers this is a nice-lookin' PSU. I hope Dogie's right about the fan not sounding terrible, because every 1U fan I've listened to (for example DPS800, DPS1200 and all SP rackables) are super annoying. It'd be nice to have user-defined cabling too.

### Reply 14:
actually you don't need breakout boards for them i solder wires directly to psu pins it only requres time and 100W soldering iron

### Reply 15:
Holy shit.. Be careful with these things guys..Look at those pictures above.. Looks like bitmain is selling house burners if you ask me.I'd advise everyone to be careful as hell if you are buying these and make sure you inspect them inside and out.I'm disgusted that shit like that even made it through their QA testing... Step up your game bitmain before you kill someone.

### Reply 16:
So, does this mean that you will only provide support for people using Bitmain(Tm) power supplies for future miners?Or is this just me being paranoid?

### Reply 17:
Extremely paranoid As long as you're not using a 300x 12V rail PSU made by <truncated> corporation, I'll help out where I can.It has short circuit protection, as it worked in this case. I'm not sure what the point of that drilled hole was, but it will get fixed.

### Reply 18:
No, I stand by what I said. It'd be fun to see someone hook one of these up to a Neptune thinking ""oh, 1600W is plenty"" and see the jackets on the 18AWG wires wilt off within a few seconds before the whole thing starts burning. The PSU itself might survive but not the cabling. It's a terrible idea (I can't in good conscience ever recommend anyone run Neptunes) but if someone does it I'd like to see video.Be much less fun if it had 16AWG wires. 150W on 18AWG is probaby okay. 8-pin PCIe for GPUs are probably mostly 18AWG and those are rated for 150W by the standard, which means they're probably capable of more, and 8-pin PCIe only has three power leads.

### Reply 19:
But remember that there are two 8 pin PCI-Es per cable rail = 'rated for 300W' on 18AWG. We're running a single PCI-E per cable rail on this PSU.

### Reply 20:
Regardless of short circuit protection or not that's pretty shit workmanship not to mention quality control if they are letting garbage like that past.I've owned Bitmain devices in the past (I think you help me set them up actually Dogie) and found them to be of de<rest of thread truncated>
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  {
    ""hardware_name"": ""S4+"",
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    ""hardware_name"": ""Delta server class PSU"",
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    ""hardware_name"": ""Neptune cubes"",
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    ""hardware_name"": ""DPS-2000BB breakout board and PSU"",
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  {
    ""hardware_name"": ""DPS800"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""DPS1200"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SP rackables"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain devices"",
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22965,"Date: 2019-06
Topic: [BMminer Config Help] Setting static fan speed across multiple miners
### Original post:
Hello! First of all, i hope this is the right subforum for this post. Sorry if i got it wrong.I am trying to set my miners to have a static fan speed of, say, 60% of the default maximum. After some googling and reading, i found a reddit thread that said to add some lines above ""bitmain-use-vil"" : true, in the config <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : <truncated> : true,This seems to work for setting the fan speed, however when i am deploying the modified config file to all my miners, some of the miners end up not hashing at all. When modifying the original config file, i decided to remove three lines from the <truncated> : <truncated> : <truncated> : ""0706""I did this because i was worried that different miners might require different voltage/frequence values (due to potential manufacturing variance). I am not certain whether that was necessary to make it safe, or if that is what's causing some of the miners to get a zero hashrate....but bett<rest of post truncated>

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23041,"Date: 2019-08
Topic: Anyone here has a Bitmain S-17 ASIC?
### Original post:
Hey guys. Anyone here has some Bitmain S-17?I would like to know how many fans on it. The Bitmain site only shows one side with two fans visible (not counting the tiny PSU fans).A DuckDuckGo picture search revealed several ones with and without fans on the exhaust side.Does the stock ASIC come with only 2 push fans? Or with 2 push fans and 2 pull fans as well?Also I know the bigger fans are 120mmx38mm. Can anyone tell me the size and RPM of the smaller PSU fans as well, please?

### Reply 1:
four push pull 140mm fans that go to at least 5000rpm on 53th speedthe little fans on the psu may be 60 mm when you run the s17 at 53th the little fans are whiney I never ran mine at 56th so I don't know how loud they get.the s17pro 53th run at slowest speed is fairly quiet it also is really efficient I was doing 36 watts a th and 40th on lowest speed.If you can get one for a good price and your power runs at around 230 volts not 238-245 volts try to get it.

### Reply 2:
Well damn it! I was hoping there would be only two intake fans so that I could add two exhaust fans to make it a bit more quiet. But at least I will be able to add two exhaust fans on the PSU. I'm told the PSU fans are the loudest ones with a whinny high pitch noise.

### Reply 3:
Actually there are plenty of pictures at the Bitmain shop, but yeah, 4 BIG LOUD fans, and 3 little irritating noise makers on the psu, and TWO power cables required, not one.Its a beast of concentrated power. I'm not sure of the wisdom of that, you could get the same efficiency split in two separate units of half hashrate each, and get better heat dissipation... But i guess that the latest trend with the newer miners.

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11373,"Date: 2023-10
Topic: Board Bitmain A113D Amlogic (S19 90TH) not working
### Original post:
I have an Amlogic A113D Control Board, which equips the Bitmain Antminer S19 90Th.It turns out that I went to install an update via the Pendrive and it stopped responding.The update I used was this:<link> Pendrive looked like this:<link> board updated, the green light turned on, indicating that it was ready.I removed the pendrive and restarted.Now, the board no longer reads the pendrive, it doesn't even light up indicating the pendrive is connected (it has a light that lights up when it turns on).And the sign doesn't go up. Only the green light on the network card turns on and keeps showing, but it doesn't go up on the network, it doesn't get IP and it doesn't read the pendrive so I can reinstall the original bitmain.Has anyone ever experienced this? Is there any hard reset mode?

### Reply 1:
The image you posted above is very blurred I can't seem to read where did you downloaded the firmware.It seems it was from vnish-firmware.com but this website seems fake no one mentioned this website before that this is legit.The firmware you downloaded bricks your control board.Isn't that the original firmware should have come from asic.to?If the OTG to USB flashing doesn't work anymore then you can try to flash the control board through a TTL cable you can find the guide from this link below.- <link> this one will work.

### Reply 2:
Thanks for the answer.I just bought a USB TTL to try this. There is no other way.I downloaded the image from the website below. I don't know why the host downgraded my image resolution.URL: <link> AMLOGIC CONTROL BOARD>> AMLOGIC SD (OTG-USB) VERSION 1.2.0 RC5 (autotune)>>> S19 AML SD IMAGE (88 chips) version 1.2.0-rc5(FILE) - File: <truncated> Link: <link> mistake could be this OTG-USB version. I do not know what this is. :-(Best regards,

### Reply 3:
Let us update here if USB to TTL would work.About the source where you download the firmware I never heard of this domain there is also vnish.net I do not know if these sites are legit but would you mind to download the firmware instead from asic.to for safety purposes?Or better download the stock firmware from Bitmain.

### Reply 4:
I was wrong to download this firmware. A big mistake.Yes, I can put any firmware you recommend. The board only turns on the network light, nothing else. And it doesn't read the pendrive, it doesn't even turn on the pendrive light, as if it had no power.I already bought the TTL cable, I'm waiting and it should arrive tomorrow. I bought this model with drivers:<link> looked at how to upload the OS using TTL and it doesn't seem to be simple, but it isn't complex either. I am going to try.Thank you for your help, BTC UP and the machine stopped... :-( I'm an enthusiast, I bought 30 S19 90Th. But I still don't have that knowledge in terms of maintenance.Best Regards,

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10843,"Date: 2019-09
Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order
### Original post:
We are happy to announce the long-awaited release of the Antminer S9. Its the worlds first commercially available bitcoin miner based on a 16nm process chip and, delivering 0.1J/GHs*, it is currently the most efficient bitcoin miner in existence.The Antminer S9 has a hashrate of 14 Th/s and a nominal power consumption of 1375 watts*.We are accepting orders for the first batch of Antminer S9 now on <truncated> The shipping of this first batch will start from 12 June 2016.We look forward to continue serving the bitcoin community worldwide and to continue making the most advanced and reliable mining hardware.* Results may have a 7% <truncated> Technologies <truncated> 25, AoBei Cultural Park,Baosheng South Rd., Haidian, Beijing, China.Facebook: <truncated> <truncated> info@bitmain.com

### Reply 1:
Is there anything even remotely close to this performance? 3x the hash rate for the same power consumption in the same form factor as the S7...

### Reply 2:
may be the beast of all time

### Reply 3:
Holy Moses, they did it again.Only problem is ROI with that price tag. We are looking at more than 140 days.

### Reply 4:
I guess that the price will drop by half in next 3-4 monthes.

### Reply 5:
paid for 1<link> into the solar array asap it would replace 4 avalon 6's using 1400 watts vs 4000and it has a confirm cool.

### Reply 6:
Nice. Incredible gear. Wondering if it worth it before the halving?!?

### Reply 7:
When can we expect to see them on Hashnest?

### Reply 8:
good gear, overpriced.fools buy

### Reply 9:
watchin' , might grab 1 just for fun but B1 .. hmmmmm might wait out tbh

### Reply 10:
Here goes <truncated> Batch 1 of the S7 eh Phil?)It's just money, right?

### Reply 11:
I picked one up this is nice i have limited space for miners these days so I like the compact form factor and same power draw as my S7

### Reply 12:
Exactly,with the halving coming,who knows what the price of BTC will be.......at $2100 + shipping,not so sure it'll ROI even in that time frame Oh crap,I said ROI,now I'm a business as per KnC specs Pretty impressive though Congrats Bitmain!!! BTC @ $542.61, Difficulty 199312067531, Network total 1378393.330 Thash/sper Day0.03532496 BTC$19.17per Week0.24727473 BTC$134.17per Month1.07520353 BTC$583.42

### Reply 13:
Indeed..My brother and I were just talking about starting up a mini mining operation.. I said wait on a miner to be released and well.. here we are...

### Reply 14:
Not sure what they have in mind for the controller board? It's populated for 4 Hash Boards and 2 Fans but has provision for 20 Hash Boards and 10 Fans...Each of the 3 Hash boards has 63 chips arranged as 21 nodes of 3 chips, and looks to be the same design as the 135 chip S7 with a Buck Converter feeding the string. If the voltage fed to the string was the same as the S7 at 10.5V this would give a core voltage of 0.5V / Chip.Rich

### Reply 15:
Very nice, congrats bitmain!Personally I'll be letting the halving dust settle before I buy any more ASICs.

### Reply 16:
Yeah, same here...by that time, those asics might cost ~ 2btc

### Reply 17:
Very, very nice!Game over BitFury

### Reply 18:
Impressive... probably will wait until at least batch 2 or 3 to see where the price falls. I got sucked into Batch 1 S7 and that price changed quickly...

### Reply 19:
I cannot believe that people are ordering these. You will be mining after the halving with these and a best case scenario is that you break even in about 2 years.What are you guys thinking

### Reply 20:
Nice machine. Bad price. No surprises.The Bitcoinwisdom mining calculator does not automatically take the halving into account does it? I don't think it does, which makes it a little tricky to really compute an ROI. You basically have to come up with a value up till July 10th, then compute again from that date with half the hash rate.When I do that, it doesn't look pretty. At 5% difficulty and free power, one of these rolls in with a 430 day ROI. Of course that's probably optimistic because when these hit the streets the difficulty is going to go through the roof. So I tried modeling a 10% difficulty up until the halving, and 3% after (assuming that things settle down for a while). That turns the ROI into 304 days. This is still a very risky <truncated> this is looking like the S7 all over again. I never made back the BTC I put into those B1 units. I only got ROI in fiat terms because BTC doubled in price and I sold off my miners early. I would have been much better off just buying BTC.I'm going to sit this one out and see what the landscape looks like after the price drops.

### Reply 21:
It will be great to get a few in my hands. S7 will be dead.

### Reply 22:
Please everyone buy as many of those as you can so that Bitmain can ROI faster and lower the price for Batch 3 or 4. Thank you Seriously though, a great machine (I didn't expect 0.1 GH/J) but<rest of thread truncated>
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    ""hardware_name"": ""avalon 6"",
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24157,"Date: 2023-08
Topic: How would you get started on create a custom firmware for a Antminer S19
### Original post:
HiI've been hunting for people to help me create custom firmware for the Antminer S19 and what costs would be involved, i just don't feel the Antminer S19 Firmware is very optimised in the Fan control and Power ControlThanks

### Reply 1:
No one would do that and there is no guide here on how to create custom firmware for this unit and I'm sure no one will share a guide.If your problem is the fan and power control there are some modded firmware that you can find on the forum with that features.Sample Braiins OS you can find their official thread from this link below- <link>

### Reply 2:
Easy: you start by requesting Bitmain the modifications done to cgminer that made it possible to work with those chips, which they are obligated to provide. Good luck...

### Reply 3:
First you would use an S17+ control board because it's unlocked and available for modification of firmware.Next you would become a Linux God who can compile code and create shell scripts. Then, you would tear apart a test jig to understand how to send commands to the hashboard and receive the nonce.Once you have the nonce you have to know how to send that to your pool for credit. Somewhere around the second or third step you're going to figure out how to fiddle with little things like frequency and voltage too get your desired effects.That's just a high level, back of the envelope, look at the top of the iceberg.

### Reply 4:
Well ... it's not that hard The S19 does block version rolling to generate work internally, so I/O to the chips is much lower than e.g. the BM1397

### Reply 5:
So you figured that independently by yourself. But that doesn't remove the fact that Bitmain is infringing cgminer and they must release the source with the modifications that made possible to use those chips, so that you ""upstream"" can decide to add support to those.Exactly how many months/years you have wasted figuring those chips, when it was your right to know this information from the beginning? Bitmain or any other asic manufacturer is not allowed to publicly redistribute modified cgminer without releasing the code. They have been pirating cgminer for years, and yet your attitude with them is passive.Selling asic miners with modded cgminer constitutes redistribution, and refusing to provide the source code activates the termination clause 8 of the GPL. Just because you decided to be passive, doesn't remove these facts, and anyone can sue them for this, especially in the US.Of course there is also the fact that there are companies running gear with that pirated software... But you allow that pirated software in your pool, go figure.

### Reply 6:
Five things:1) You are replying to something I wrote more than 2 months ago 2) When have I been passive about the license violation?I'm the only one who is active about it.As I have stated before a number of times in the past, the catch is the GPL doesn't apply in China ...3) Yes Bitmain violate the license, as I keep saying about all the <truncated> even you do since you used the opensource code to help write your miner in a different language then close sourced it 4) It took me about an hour to work out the version rolling plus everything else in the work protocol of the s19(but someone else also took time to dump the data for me)5) You allow all cgminer license violations on your pool.I block all the ones I know about who also make false claims about not violating the license and have never released any code.

### Reply 7:
Bitmain definitely knows what they're doing & if someone can optimize anything on that board - it's them. They're not obliged to tell you anything & can use whatever software/hardware they want, & then you can do what you want with it.That aside, there's a lot of info/documentation on their asic chips lately. Tons of folks are soldering them to their own PCB's. We're already seeing many projects with one or two asics on small pcb's controlled by some small mcu or via serial by a pc, next they're going to put 5 on a board, next 10, then you're going to have full fledged open source s19 type machines. It won't change anything though - The vast majority of the cost of a sha256d miner is in the asic development/wafer printing - even if you hand crafted a shad256d miner asic by asic, resistor by resistor, etc, custom controller board, etc with your own soldering iron - the cost would be similar to MSRP for a s19, for example. Bitmain is selling those machines for very, very close to their production cost. Just in case you're thinking it's cheaper to build your own miners.To answer your question though, how much to hack a fan control? That's more of a reverse engineering job than develop<rest of post truncated>

### Reply 8:
That is an interesting observation, Braiins Pool previously known as Slush allows all SHA256 miners with all different firmware versions to mine to their pool, which i<rest of thread truncated>
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23114,"Date: 2019-10
Topic: M20S Overclock
### Original post:
Does anyone know the max power for the built in PSU on the Whatsminer M20S? Can these machines be overclocked?68T is not enough

### Reply 1:
Make sure to show us the fire or meltdown you make with that.

### Reply 2:
If you have the P20 it's rated to 3350V. Not positive what the other models are rated for, I think it's labelled the P21.Not sure how you plan on overclocking the machine, it doesn't have firmware with additional power modes as far as I know. I'm still looking for a LP version

### Reply 3:
I think he was being funny or sarcastic.

### Reply 4:
Do you have a watt meter?How much watts it uses in real environment ?

### Reply 5:
they have changed the PSU and replaced it with a 3600 W model. I think it can be overclocked.. umm.. not really overclocked but more fine tuned since on some machines there is a difference in frequency between boards.SM0 638SM2 682the miner is totaling of 67.3Tprobably it is possible to get better hashrate if setting by board frequency since the auto tuning on startup is not ""fixed"" by board, but the total average seems to be the same.tried logging in with putty SSH like the S9, but it's not connecting.

### Reply 6:
Humm, you think they closed SSH like Bitmain does?With fixed frequency for sure its possible to give some more TH, but you need to be carefull try to see how much is consuming now with 67.3 TH, do you have a Watt meter?

### Reply 7:
These units can not do 3600 watts with any margin of safety.

### Reply 8:
How many watts are it using with 67TH ?

### Reply 9:
C19 / c20 rate for 16 amps 24/7/365.3600/16 = 225.00.Translation once volts are under 225 you are exceeding safety margins.I have been mining since 2012 and from experience I can tell you running above max amps = melt down in under a month on lots of different cables.I can also state running right at amp max spec = melt down in 2-4 months.Running under max amp spec more often then not works. Long term.This gear needs to run for a year or more. Over clocking is basically stupid as fuck.I would prefer this gear to do 60th and use 2900 watts.I have three of them and have large fans blowing air on them. Since I fear they will over heat.

### Reply 10:
This was for the 65 TH model, but gives an alright example of what to expect when considering advertised specs. There is always some variation - [Review] Whatsminer M20S 65 TH.I didn't run into any issues this summer it was a cooler one though, nothing higher that 34C. I do poke every now and then looking for LPM to be added, especially as I do want to place this in the basement in a couple weeks. Worst case I just have to go extra hard on the soundproofing.

### Reply 11:
measuring in A here, the highest is 14.2A for units that are hashing at 68.4 on average.Units hashing at 67.8 on average are sucking 13.9A.

### Reply 12:
yes and while it most likely can do 14.2a for months it is very close to the ""safe"" number of 16 ampsGood quality cords are extremely important.And many farms are 208 volts 3 phase. We are that in Clifton NJ but we drop to as low as 187 volts when there is an external demand on the transformers once or twice a month in the summer.So these monster units are a bitch for us. you don't really save much if the unit is 68th vs 60 th but you get so much more durability and less stress on the gear with a setting like 60th and 2850 watts.asic builders don't care if the gear burns out on you.The best wire I found to use with these is this one.<link>

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24169,"Date: 2023-09
Topic: Dragon miner 1th sd card firmware
### Original post:
I tried to search for almost a day for Dragon Miner firmware t1, t1.5, and t2 but almost all links that I found were dead.Would you mind to try this one below I jist found it on the old dragon miner thread.- <link>

### Reply 1:
Isn't Dragon miner T1 a copycat of the original Innosilicon T1? I don't recall what miner did Halong Mining modify to make that Dragon T1 but sure thing is; they never made their own, so you are more likely to find that firmware by looking for it using the original miner model keywords like Innosilicon T1 Firmware instead fo searching for Dragon T1 firware.

### Reply 2:
The Original Dragonmint thread from 2017 is here I'd think that ck's links should be somewhere in there...Another is here

### Reply 3:
Hi thanks for the advice guys i'll do some searching, i did message the member - mxnsch as he/she posted the enhanced firmware on this link - <link> no reply from him/her yet.Thanks

### Reply 4:
Thanks for the links, but looking at the Innosilicon T1, its similar to the Anminer s9 with control board. My dragon miner 1th is run via a raspberry pi 1 or 2. What i need is the sd card content and not the control board content. Heres a similar one to mine in this link - <link> <link>

### Reply 5:
Nice history update, yes it is old but its ideal for what i want it to do. I've been searching the net for the last few days but cant find anything about the sd card file. I've checked all my pc's laptops and flash drives but cant find my back up.

### Reply 6:
Whoo - thass going way back to early 2014. It uses the A1 chips that the now defunct Bitmine.ch and Innosilicon collaborated on. Bitmine.ch provided most of the money with Inno getting the option of selling the chips to other mfgrs a few months after Bitmine released their Coincraft A1 miner. Go back to my earliest posts to catch that saga regarding their Made In America version that a company called AMT was supposed to handle...Long story short - Bitmine.ch (and AMT) were clueless idiots when it comes to even the basics of dealing with high power chips and feeding them power. Their hash boards were utter crap. Massive failure there whereas companies like LKETC got it right. Innosilicon back then was an ASIC design house who designed the A1 chip and had them made by TSMC but at that time Inno did not make actual miners. As for the firmware - no idea about that but it has to exist *somewhere* on the `net. Back then the 'control board' was just a SPI data bus fed from the GPIO pins on the Pi. The entire code for the miner is on that SD card.

### Reply 7:
Close. Halong worked with Inno who actually built the miners. Halong had buckets of money and wanted to be 1st to use non-covert ASICBoost, Inno had the design/build expertise to make them and was licensed by Halong to market their own after x number of months assuming the idea (AB) caught on.As for firmware, -ck was paid by Halong to do all of the cgminer code mods and driver work. Initially he was releasing FW updates every couple of days for Live User testing until he got the bugs worked out, odds are somewhere in his git the code is all there.

### Reply 8:
Do a search using LKETC Dragon software firmware as the search term.At the top are a lot posts from here in the Forum about it.One thread is <link>

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16594,"Date: 2023-09
Topic: How much do I need to start mining?
### Original post:
I know huge capital is required to meet up huge financial expectations, what's the minimum volume of income one can use to start mining? In a situations where you trade with different strategies and still hits wrong targets, if you apply or use same trading knowledge for mining won't one still loss in mining too? Because I don't have enough money with me, so am trying to cut losses if mining too will not favor me I will decided to venture into mining too again. Can I start mining with $300 and grow from there?

### Reply 1:
Currently, there are no Bitcoin ASIC units below $300 mostly the price is above $1k but if you want to mine Bitcoin then you can buy 2nd hand S9 units zeusBTC is selling used units you can check it from this link below- <link> search s9 or you can try to check available units from here <link> or contact offordscott here <link> is not so active here unlike on his telegram group above.There is no problem splitting your investment into mining and trading and you can grow in mining if your electricity rate is pretty cheap.

### Reply 2:
That's a pretty low amount if you are thinking of mining BitcoinAnd also don't just focus on buying mining gear, have you thought about other expenses such as electricity cost in your area and the maintenance cost in case things go wrong?It would be a shame if you bought a miner and would be able to run it because there are not any more funds to cover other costs

### Reply 3:
300 bucks is a really low amount if you're looking to mine bitcoin, at that point you might as well just mine using a Gameboy if you wanna cheap out on the rig. Most standard mining rigs right that are efficient enough would range from $2000 to $20000, and that's for ASIC miners too. If you want to get mining rigs for cheap I suggest you look into craigslist or OLX to find secondhand mining rigs, or maybe look for manufacturers that sell their secondhand rigs like zeusBTC to get relatively cheaper prices for bitcoin mining rigs. You also have to consider having to pay for your electricity bill btw, so keep that in mind. if you can't afford to buy a mining rig that's powerful enough, then perhaps you wouldn't be able to pay ridiculous electricity fees too, but that's speaking from experience.

### Reply 4:
With 300 better buy spot btc and chillyou need at least couple mil to kickstart a mining biz and im not even including the necessary know-how

### Reply 5:
with $300 I'd take the risk on solo mining pool using nicehash

### Reply 6:
$300 is not really enough for you to make your money back as in investment in mining hardware.Unless you are playing the lottery with USB sticks or an Apollo BTC unit and just happen to get very very very lucky. But with the difficulty at an all time high finding a block with smaller ASIC hardware(s) would be much like getting struck by lightning during a sunny day. It's possible but highly improbable. As others have mentioned if $300 is the limit you would be better off buying BTC and holding it hoping for an increase in value.

### Reply 7:
I'm too

### Reply 8:
Judging from your post history, it looks like you failed to consistently make profits when you trade and are looking to DCA. I think that is a good idea, as long as you have the patience to hold and keep buying even if the market is full of bear sentiment. If you don't like the waiting part and want to grow your capital quickly, even if you find cheap electricity I don't think you'll be able to stick to your mining plan. Whether you mine or not, you'll need to wait for some time before it bears fruit.If $300 is your only budget, I'd suggest you stick with your DCA plan. Especially since you mentioned you have some responsibilities to your family and can't allocate too much money to high-risk investments. CMIIW.

### Reply 9:
300$? Maybe, possibly with promised returns per day from Cloud mining, I hope you aren't looking up to one already. They are all scams no matter how legit they look.You can't buy any profitable Asic miner with 300$, you should let go of this idea right now and be prepared for the future, there is a good way to get prepared, start buying Bitcoin or ETH before it's too late, we are still in a bear market right now, start accumulating before halving gets here, at that time it might be too late already.

### Reply 10:
Are you sure GameBoy? Not worth trying it only hash 0.8H/s meaning in solo mining it takes decades before you can able to solve a block or even if you mine on the pool you can't even make a single Sat it would be better to buy 2nd hand ASIC units than wasting your money buying gameboy to mine BTC.The Offordscott telegram link above has some s9/t9 units listed for around $135 or even cheaper.

### Reply 11:
With $300, you can't even get Apollo BTC unit which price starts from $524.99[1]. Mining USB stick from GekkoScience[2] probably is the acceptable option. [1] <link> <link>

### Reply 12:
I<rest of thread truncated>
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16468,"Date: 2023-03
Topic: Building a mining setup.
### Original post:
I want to know how much can i earn by mining , does anyone mine by a regular laptop which do not have external graphic card, and i3 CPU, If yes than how much you earn, and which token you mine ?Is it right idea to mine while doing other small task on a i3 laptop. with no heating problem. I searched online mining profitability calculator but it show earning upto ~$1,whcih is very low, I want a real person opinion about how much he earns with this much small pc spec.And which is most profitable coin right now.

### Reply 1:
If you talking about mining BTC using a laptop then you won't earn a single penny and it's not profitable.ASIC machines are the only miner that can mine Bitcoin with profit(depending on your current power cost) and it's Plug'n'Play you just need to point it where you want to mine.Check this tool below to find what miners are profitable and scroll to the bottom to edit power cost and use search filter with this keyword SHA-256 to filter units that can mine BTC.- <link>

### Reply 2:
currently, Mining isn't that profitable as before and you can't really make a good profit with how the crypto market is right now. I've been mining before using GPUs but stopped doing that since months ago, I never mined with a regular laptop as you said cause there's a chance that you could damage it with overheating, because when you start mining, your GPU will be on use on a 100% rate. I used to mine ethereum since the difficulty wasn't high and I could've won much more money compared to the other tokens.If you really wanna try it, then go for it, but as I said you won't make such a good profit on an i3 laptop. If there's not heating, then you're good to go. In my opinion mining using a laptop or even using few graphic cards ain't that much more profitable. If you don't pay for electricity and you can afford to buy a lot of graphic cards or antminers then yeah it's going to be profitable at some points.

### Reply 3:
Which tool did you use to calculate your earnings? Are you referring to altcoin mining or Bitcoin mining? I don't think you can even make a $1 with your setup even if you mine altcoin. Most of them work by looking at the current hashrate and the price of the coin you want to mine, so while it is not always accurate, the result should not be that far off (as long as you use a good tool and not an outdated website). If you don't have other devices or the capital to buy some of them, I suggest you buy coins directly and swing trade/DCA if you want to earn some returns on your investment in a respectable manner. Don't bother looking at cloud mining or something similar, most of them are scams and if you're looking at Binance cloud mining, the return is negligible afaik. The risk is also greater compared to buying some coins and saving them on an air-gapped device. Beware of mining extensions too, at the best case scenario they turn your computer into a botnet, at worst it is a keylogger/malware. CMIIW.

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22883,"Date: 2019-03
Topic: Gekkoscience BSD 0: found 0 chip(s)
### Original post:
Might be best asking this wuestion in the support thread in the hardware section

### Reply 1:
This is a common issue on Gekkoscience usb miner. They mostly recommend to reduce the frequency first if it can detect the chips but as I can see you already set the frequency to 25 without zero. Can you try replace this --usb 1:8 to --usb :1Anyway, if it doesn't work you can directly go to their official thread from here <link>

### Reply 2:
Thank you. I do not come home until Tuesday. I will test your suggestions and post the result in the appropriate thread.

### Reply 3:
Hello,Before I start, I would like to apologize for my english and unfortunately go through google tradI bought a raspberry pi 3b + and a Gekkoscience 2Pac about 1 month ago. For 1 week, the Gekkoscience worked well but without knowing why, it stopped working after 1 week of use. Now, every time I want to restart it, he puts this message to me:Code:[2019-03-01 14:14:26.352] BSD 0: 2Pac BM1384 Bitcoin Miner <truncated> 14:14:26.405] BSD 0: found 0 chip(s)[2019-03-01 14:14:26.405] Network diff set to 6.07T[2019-03-01 14:14:38.978] Stratum from pool 0 detected new block at height 565204The green LED stays on constantly without changing position.I hope that the ""found 0 chip (s)"" is not a sign of bad omen.I use this command with this <truncated> -o <truncated> -u USER -p PASSOWRD --gekko-2pac-freq 25 --usb 1:8Telling myself that the raspberry pi may not be powerful enough, I switched to another material.My hardware is a Nuc7i5bnhx1 with Ubuntu Mate x64 installed on it. I have already updated the OS. The Gekkoscience is plugged into a usb that can deliver 5V 1.5A. I tested on several USB and check that they are functional. If you need more information, I remain at your disposal. Thank y<rest of post truncated>

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24113,"Date: 2023-04
Topic: MERGED MINING
### Original post:
What is the significant of merge mining and what different does it make compared to the regular blockchain network?

### Reply 1:
merge mining, is a form of mining multiple cryptocurrencies sharing the same algorithms which then increases the overall efficiency of the Blockchain network. now compared to a regular Blockchain network, merge mining increases the speed of Blockchain confirmations as miners are competing to validate transaction across multiple Blockchains enabling smaller Blockchain networks to manage the security and hashpower of larger networks.

### Reply 2:
Merge mining uses the same hash rate to work on two blockchains at once: the original blockchain (e.g. Bitcoin) and the merge mined blockchain (e.g. RSK or NMC).Note that it is mining 2 different coins so it is NOT a faster nor more efficient way to mine Bitcoin. It only benefits the secondary coins. Even more to the point, the block rewards originate as the secondary coins and do not count as finding a BTC block. Depending on where you are mining those may be converted to BTC but of course they have a much smaller value then BTC.

### Reply 3:
Is merge mining with sha256 algo still a thing?I know that some pools offered merge mining of BTC with NMC but since I only solo mine, I don't know if it's still offered and current? For my part I never really understood how merge mining could secure two blockchains at the same time? Knowing that NMC allows merge mining but that BTC does not allow it if I understood correctly, is that what you mean when you say that it benefits only to the secondary coin? I know that some miners could take advantage of merged mining from a financial point of view, but isn't it a waste of submited hashes from a BTC's blockchain point of view ?I don't understand technically how they can earn BTC knowing that their submited hashes doesn't count for the BTC block

### Reply 4:
AFAIK Braiins is the only pool that does it, ref <link> as to how it works <link> idea what the exchange rate between BTC and NMC is. Considering I can't say I've ever seen NMC being actually used one has to wonder just how many tx's are actually in its blocks...

### Reply 5:
It is not a waste of shares, shares are still created either ways, low diff shares can solve blocks for those coins but not for BTC, it is not like you know beforehand the share is going to have x diff, you are going to create it and only then know for sure.You can read more here <link> most large pools support merged mining, the rewards are too small to be considered, in the above link I posted my earnings on Viabtc pool.

### Reply 6:
Merged mining was a thing many years ago, when new popular altcoins used to simply copy the bitcoin mining algorithm. In the past years new coins however started to use newly developed algorithms to prevent merged mining and to be able to say they are innovative. Basically it just means that the developers dont want the pools like brains to merge mine and directly dump the coins on the next exchange for any price. For bitcoin merged mining is actually a good thing, since the profits form the merged mining usually are converted straight into bitcoin.

",[]
23105,"Date: 2019-10
Topic: Bought used Dragonmint T1. Cant Find the IP address
### Original post:
Hello Guys,I recently bought a used dragonmint miner. I powered it on and everything sounds like it is working. But there is a major problem :1. I cant find the ip address of the miner on the ip scanner even after hard reset & ip reset.2. I tried connecting the lan cable directly to miner. It gives me 169.X.X.X which means it is not connecting.FYI I am doing this at work so as to get free electricity.Your help is much appreciated.So with the help of previous posts I was able to find the IP address and access web GUI but for some weird reason it is start at 9 Th/s and then keeps going down.Also, the miner infor shows only 2 and they start with alive but within 5 minutes goes to dead.

### Reply 1:
Try to reset the miner and scan it again make sure it's connected to the router properly.Here's the method on how to reset the miner below.- Find the reset/Ip scanner button at front of the miner- push and hold the button for 15 sec. Then release.- scan the miner's IP again and check.If you can't still scan the IP address or getting 169.x.x.x try to boot the miner in SD card with Braiins Os and scan the IP again. Braiins OS documentation can be found here <link> was thinking on this and maybe there are many computers connected on the same router.Don't forget to increase the IP ranges on IP scanner...

### Reply 2:
By connecting the dots, I am willing to bet on the router at your work place is blocking your miner , honestly any average network engineer would configure the router to block such ""weird activities"" such as mining.I don't want to sound mean, but you should really not be mining at work unless you are allowed to, and if that is the case, ask the IT guys in your company to check if the router is dropping any packets coming in or going out from your miner.

### Reply 3:
I would treat this as an normal network device :- Remove it from current network.- put it in an known network you manage yourself ( f.e. your home network )- check if it takes a IP from the DHCP server- if it does you know it has DHCP IP enabled, and so you know it will try to ask for an IP in your work's network.- if it doesn't it is on an fix configured ( or factory default ) IP address. Try to find it.Remember that 'work' networks look to the device before giving out a IP adress by DHCP !! ( By layer 2 communication : is it an known device ? What kind of device ? Is it allowed by company policy ? ... )My 5ct

### Reply 4:
Maybe if we all learn to read the post / edits and updates this forum will be a much better place.before anyone commented , OP edited the post and added this part.So this is no longer ""I can't find my miner's IP"" anymore, it's totally a different problem , the miner starts , hashes for a while and then stops, which only means a few possibilities.1- The router blocks the miner / pool after x amount of packets / x amount of time2- Temperature gets way too high and the miner goes into idle to protect itself against toasting3- Power supply is failingThese are the once on top of my head , there are a few others, but by analyzing his post, I am leaning towards the first option, so please READ the post and kindly stop asking him to troubleshoot a problem he does not have in the first place.

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23251,"Date: 2020-04
Topic: Please, Snow Panther Miner A1 but I Not received IP access to the web config.
### Original post:
Go to your router's web configuration page. (usually 192.168.1.1)Can you see it listed in your router's local area network IP address list?

### Reply 1:
just google this key word ""ip-scanner"" , there are many free tools that will tell you the ip address of all connected devices , there will also be a name representing the device in most cases.once you know the IP , simply type it in a browser to access your miner.

### Reply 2:
Please, help me the Snow Panther Miner A1 but I Not received IP access to the web config. I What to do ??<link>

### Reply 3:
if u look at the behind the a1 u see tiny board with blue light from time to time it get dusty u need to remove it and replace it again for this fix the no internet and red light problem

### Reply 4:
Had a similar problem as the OP. My unit (Bitfily Snow Panther A1+) was brand new and would not draw an IP. I slid the SD card from the OrangePi Zero into my PC and it was blank! Anyone have a copy of the OS they can link to?? that might get this POS to work...

### Reply 5:
Try this one below.If you can't still scan the IP with angry IP as suggested above you must contact the bitfily support the list of contacts are listed on the quoted post above.For OS, I can't find any OS under their website it seems they don't share it publicly much better contact the support you can use the links above to contact them and ask for the OS.

### Reply 6:
UPDATE:I decided to give up on Bitfily support and since this unit bears a striking resemblance to the BitFury B8, I went to their website and easily found their software here:<link> B8/or<link> above link also includes a quickstart guide for the initial setup.As expected, Bitfily is a chinese knockoff company who has stolen Bitfury's design and sold it as their own.Supposedly there is a new firmware coming for these units that bumps up the hashrate to 68TH/s but I will believe it when I see it.I am currently running at 52TH/s @ 61C so this might offset some heating costs over the winter

### Reply 7:
Thank you guys i try these ways that you told me but these are not work.but really thank you for your answer mining bro's. I threw it in the garbage last night. it belong there.

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22919,"Date: 2019-04
Topic: S9i one board doesnt work
### Original post:
Hi there,one of my S9i units' boards doesnt work, temp constantly stays at 15. However sometimes after a couple of hours, that one board randomly starts working again. Same process repeats if unit is rebooted.I am running latest S9i firmware, for some reason I cant downgrade firmware anymore to test. I have tried resetting as well.I have also tried changing ethernet cables, or using another PSU.any advice is appreciatedThanks in advanceCode:Miner Type Antminer S9iHostname antMinerModel GNU/LinuxHardware Version 30.0.1.3Kernel Version Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018File System Version Mon Mar 4 11:45:08 CST 2019Logic Version V2.57BMminer Version 2.0.0Uptime 1:14Load Average 0.18, 0.19, 0.19<link>

### Reply 1:
Based on what you have already tried out, the only thing you have left is to try to replace the 18-pin data cable that connects the controller board to the affected hashboard.<link> you don't have a spare one (I recommend always having, just in case) you can turn off the miner, disconnect the PSU and swap one of the working ones from the other two boards into the affected one to check if it's alive. If after doing so the board still doesn't work that probably means it's dead and you will have to replace the whole hashboard for a new one

### Reply 2:
Before assuming this, test. Simple: disconnect all the other boards and swap cables.Test each board one by one, and swap data cables one by one, and power cables one by one on all three boards while single connected. Then you will know for sure if the data cable is the culprit. Takes time, but gives you the right answer instead of wild guessing.

### Reply 3:
Upgrading or downgrading the firmware or factory reset and replace ribbon wire(18 pins)doesn't work you have a faulty temp sensor that is why it gives you 15 temp.Can you try to increase the fan speed and lower the frequency if you don't know how to do this you can check this method from here <link> you can find the frequency in the same tab.If still doesn't work you have a hardware issue the only solution is to replace the temp sensor from the hashboard.

### Reply 4:
then this should be the first problem you need to solve, usually changing the firmware alone can fix a lot of issues, so you should explain what does it say when you try to change the firmware?

### Reply 5:
It says ""Cannot find Signature"", I've tried loading the mac fix fw upgrade first as well and it gives me the same error message.I tried this and the data/power cables work on the other two boards, so its not the cables.Thanks. I tried this as well, isolated only trying to run with the board that gives issues, and the board no longer loads at all when speed and freq are modified, had to reset settings. Miner status pages was showing all values zero.Will need to look into replacing the temp sensor then, any info/tips on how it should be done?

### Reply 6:
If you think only the sensor is the problem, while having only that single board connected, try booting from Braiins OS on an SD card. There is a cgminer option that lets you disable the sensors when you use this alternative free open source firmware replacement.If you use this method, you only need an sd card and move a jumper. To go back just take out the sd card and put the jumper back where it was.If you really like Braiins OS, you can install it in the controller's NAND as well.You can also read the Braiins OS thread if you want more information.Even if you don't like it you can go back later to Bitmain's firmware, after you confirm the problem really is just a damaged sensor.

### Reply 7:
If you successfully flash it with t9+ firmware as the procedure from this you might revert the firmware back to any s9 firmware through web GUI. So you need to follow the method first from bitmain creating your own control board program recovery then flash the control board and after successful open your web gui upgrade the firmware to old version of s9 most stable firmware is <truncated> Let's hope that you can upgrade the firmware from t9+ to antminer s9 firmware if it won't work the final solution that might work is to flash it with Braiin OS which you already posted above.

### Reply 8:
This is a common issue right now if you flash the miner already with the latest version(2019 firmware) and then you are trying to downgrade you can see this error ""cannot find Signature"" there's a method to bypass this error that you can find here but the problem the 2019 firmware disabled SSH access. So the only solution that I think might solve your issue is to flash the control board through SD card. Recently Bitmain decided to release a method flashing S9s through SD card. If you don't know how to do it you can follow it from this link below. - S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery.

### Reply 9:
Ugh, this is awful. Can you downgrade from the 2019 firmware back to 2018? Disablin<rest of thread truncated>
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16495,"Date: 2023-04
Topic: ""Brazil's Competitive Energy Prices and Legal Security Make it a Potential Minin
### Original post:
Brazil's energy prices are competitive with other major players in the crypto mining industry, such as the USA and Russia. Although not the cheapest option available, Brazil's attractive energy prices, coupled with other cost factors such as labor and taxes, make it an appealing option for crypto miners.Furthermore, Brazil has opened up its electricity market, providing companies with the freedom to select their energy provider and negotiate prices, a crucial factor in keeping operational costs low. This move has created a competitive environment that allows miners to maintain their margins.In recent years, Brazil has made significant strides in regulatory clarity, a critical factor for miners looking for legal security and confidence in their operations. This progress has given miners the assurance that their operations will not be shut down overnight due to arbitrary government decrees.Overall, Brazil has great potential as a mining hub for Bitcoin. Although there are still some challenges to be overcome, with the right investments and support, Brazil could emerge as a major player in the world of crypto mining. We should keep a close eye on this space to see how it develops.It's<rest of post truncated>

### Reply 1:
BR is a good place, it can turn you in a millionaire in just few years, if youre a billionaire :-). Tryin to mine here, may be profitable just in case of ilegal operations, ( and i DO NOT recommend this) or lotterymining @ home. Keep in mind, that every productive activity, W/O having regulatory capture on this country is a crazy move, higher taxations, bribe askings and many other problems that rise over and over. If you want to lose money, its the right country. In doubt? Try talking with @meyercafe and @libertcontador on twitter.

",[]
23100,"Date: 2019-10
Topic: Latest Innosilicon sha256 SSH Password?
### Original post:
Anyone figure out the SSH password for Innosilicon T3+57? innot1t2, t1t2t3a5 & blacksheepwall do not work.

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23150,"Date: 2019-12
Topic: Help: Innosilicon T2TH+ 37TH Not mining
### Original post:
To see the logs, just append /logs to the IP address of the miner in your web browser.So for that miner it would be <link>

### Reply 1:
Hello Everyone,I purchased Innosilicon T2TH+ 37TH but I can't seem to make it work. I can't seem to find logs or any sort of verbose detail than will guide me on troubleshooting. Connecting via SSH seems to not work. Most common passwords of root are not applicable ( blacksheepwall, innot1t2 or t1t2t3a5 )I tried using slushpool and f2pool. I already read the manual at: <link> also upgraded the firmware to: <truncated> build date: 13th of November 2019 02:39 AMHere are the <truncated> --> <link> config -->> <link> have an advice what do to? Or how to troubleshoot / verify?Thanks.

### Reply 2:
your ip is. 172.16.8.152your gateway is 172.16.0.10usually the .8. should match the .0.you are doing. dhcpso i am not sure why you dont match gateway.

### Reply 3:
Thanks for this.Thank you for the reply. So far this can connect to the internet. Perhaps this have 255.255.0.0 subnet. Anyhow,Problem with Innosilicon Miner:screenshot --> <link> the default pool can't do the mining. I tried antpool, f2pool and slushpool all the same issues. tried hardware factory reset. software factory reset.. still same issues.It always saysCode:Dec 07 10:26:04 InnoMiner cgminer[11714]: Timed out waiting for response in initiate_stratumDec 07 10:26:04 InnoMiner cgminer[11714]: Initiate stratum failedAnyone have an advice? how to <truncated>

### Reply 4:
Try to ping the pool server not just ping use the psping to ping the pool with port.Check this guide below replace the viaBTC with your pool.If no connection then try to use other pool server.Check these list below.Code:URL: China Server <truncated> port: 3333, 25)USA Server <truncated> port: 1314, 25)EU Server <truncated> port: 1314, 25)Source: <link> from here <link>

### Reply 5:
You can see the unit from your network's UI? Had an issue where my router wasn't assigning IP automatically had to restore factory and assign manually from the unit.

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16412,"Date: 2023-01
Topic: Mining cryptos with flare gas - modular refinery for remote miners
### Original post:
Hello Miners,I am a graduate student at Montana State University working on a project for a company that has developed a product that refines natural gasses at wellsites for use with remote data processing centers (crypto miners, cloud processing units, etc). This product breaks down the hydrocarbon-dense natural gasses coming from the wellsite and gives the generators a fuel that is much friendlier on their internals and a cleaner emission as well. This would increase the uptime on your machines and put you in compliance with local emission regulations.Is this product something that would interest remote miners? They would come in both a 1MW and 2MW model, but the company is open to making smaller/larger models. I would love to hear opinions and questions so we can field the best possible path forward to the company.Thanks!

### Reply 1:
I have a person for you to contact. He builds huts with gas gens to mine.I will pm a link to you.

### Reply 2:
Any chance it could be used for methane bio-gas? Or is it just natural gas? We always have siloxane issues that would be cool to clean out and remove which would boost the engine longevity.

### Reply 3:
If your generator is compression ignition only, then you might want to try the Bitcoin Blockchain Fuel Saver? Seems to clean diesel engines emissions quite nicely.

### Reply 4:
In general, it would be interesting if, in addition to the power generated by these generators, you also share such a parameter as the consumption of natural gas for electricity generation m/Mw(Kw), so that users can see with what effect it can be used.

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16584,"Date: 2023-09
Topic: Solo Mining to my own node
### Original post:
I've been running my own bitcoin node for a while now and got curious about how one would solo mine to their own node which is what i assumed was the norm back in the day and is the most decentralized for the network but everyone now uses pools even for solo mining. I even recently bought an old crappy S9 from eBay to play around with this idea but when i check solo.ckpool.org i saw that the reason it exists is because you cant mine to your own bitcoin core node. Why is this? is mining to your own node some lost art and how do these pools do it? like how else would they get the mining work anywhere else but the node? could someone please explain this to me?

### Reply 1:
I will quote an excellent answer from BlackHatCoiner :Here you will find a topic related to your question :Solo mining using Bitcoin Core wallet Here the list of topics related on solo mining I made some months ago, you will find some links to self-hosted solo pools, and solo mining in general if you are interested in this subject :[MEGA TOPIC] SOLO MININGI think all these resources will give you an opportunity to do more researches and to understand the pro and coins of each solution possible

### Reply 2:
I don't think the above response will work but I think running BFGminer with a stratum proxy can mine you solo check this link below to get some idea- <link> run your own mining pool like yiimp you can download the open-source from the link below- <link>

### Reply 3:
The main issue of solo mining really just comes down to the fact that the odds of someone just running an old miner or two miners of finding a block is just about zero. Not saying that you can't get lucky, it's just that at doing it this way you are more or less just playing the lottery. Joining a pool at least you have somewhat regular payouts. Solo mine, and you may never see anything.The other issue also becomes mining to your own node means you have to make sure that you've got enough performance on the machine running it that it could keep up with everything and an Internet bandwidth that if you do find a block it doesn't get orphaned because some other pool found it but your block didn't propagate.People who have been running pools for years could tell you all the pitfalls of doing it. Drive issues, communications issues, and hosts of other things. For the one or two percent (or less) that solo pools will charge if you do find a block you are probably better off just giving up those small amounts if you do happen to find a block then loosing the entire thing because you made a configuration mistake.-Dave

### Reply 4:
I dont really care about profits with this s9 it got it for barely 100 bucks. i have good asics that i expect profit from. this s9 is a sorta toy to mess around with because i am interested in how bitcoin works on a technical level, from what i understand it that miners connect to nodes so that the nodes can tell miners what to mine without nodes the miners would be bricks. But from what i am hearing is that bitcoin core nodes don't natively support just strait up miners connecting to them and mining right away. In this regard i am confused because how else would this be done?

### Reply 5:
Well, if you don't ever find a block, you aren't really doing anything useful solo mining - so profits are relevant Your node being a node, with or without mining, is the same use to the network, unless you do find a block.i.e. you aren't securing the network unless you do find a block.Keeping the network alive by running a node is all you are doing with a low solo hash rate,so your usefulness to the network is the same without solo mining.... and if you do find just that one and only block solo mining to your own node, well, cool ...

### Reply 6:
Just a suggestion: you mention you're learning, why not mine on the testnet instead? The diff is still pretty high for a TEST network, but with an S9 you should be able to mine a couple of blocks once in a while (with allmost 0 block reward nowadays), but atleast you'll be able to see everything in action If the testnet cannot entice you, there are a couple altcoins that are clones from bitcoin and use sha256d as POW algo with a much lower diff than bitcoin's main net... The income will be peanuts aswell tough.<link> used to mine peercoin with a usb block eruptor back in the days, when the bitcoin networks diff was waaaay to high to use an usb miner, but on peercoin it was still low enough... Don't know if this is still valid tough!

### Reply 7:
Using BFG as a stratum proxy will work. You cannot use GBT with Bitcoin Core because most of the mining clients are affected by the change in the coinbase data in Bitcoin Core when using Bitcoin Core with GBT. Run BFGMiner with stratum port flag, and specify a port for your ASICs to connect to. If they're on the same network, then you should be able to connect the S9 to your BFGminer with a proxy. There's plenty of <rest of thread truncated>
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10812,"Date: 2019-04
Topic: April 4th, 2019 Canaan Low Power Mode
### Original post:
Wanted to share my early experience with this new Pi firmware and matching MMC update.FYI: Download from <link> order appears to be to upgrade your Raspberry Pi first using system->flash firmware and specifying the .img image downloaded.After that, use status->cgminer configuration and select LowPower modeThen use status->mmupgrade to load the .mcs file downloaded.Based on a single test, prior to using this firmware one of my 841s used 1285Ws to perform at 13.3TH/s for an efficiency of 96.4 J/TH.After upgrading and selecting LowPower Mode, the same 841 is using 750Ws to perform at an average of 9TH/s for an efficiency of 83.3 J/TH.This brings the 841 into alignment with Bitmain S9s running their 2019 firmware in terms of efficiency.I'm guessing the 841 is NOT using ASIC Boost. If it could, the numbers would presumably improve more.Has anyone else seen different results or tweaked beyond this?

### Reply 1:
Asciboost requires a chip designed with asciboost in it.None of the Canaan chips before the A10 have this.

### Reply 2:
The best I was able to do on the 851 is 102, I was able to get 94 a few firmware versions ago.I might be able to get better as I haven't gone to the lower limits of the frequencies yet.

### Reply 3:
Make sure your running the new April 04th 2019 firmware in LowPower mode.

### Reply 4:
I'm running the April version with custom settings, all the mode does is alter the same settings with the exception that you don't need to manually enter them. The best I was able to get efficiency wise on the April version was 102j/ths, in a previous version I believe it was February or January I was able to get 94j/ths on the same miners.Now this is on the 851 which have been a bit less efficient then our 841's from the beginning.

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13836,"Date: 2023-06
Topic: cgminer
### Original post:
I've decided to rename this application cgminer which means ""cpu and gpu miner"" or ""ck and garzik miner"" or ""c gpu miner"" or... just plain cgminer.So I've moved the git tree to<link> have started renaming files and have cleaned up the git log, rebasing it, for it to build with the name cgminer version 1.0.9So I'm trying to clean all this code up for a meaningful release now.

### Reply 1:
Did not -ck retire?If he did who is using his account?Is the ""newer"" cgminer infested with ""devfee"" due to some greedy F?.

### Reply 2:
May I suggest that perhaps you should spend a little time actually scanning through the Forum topics... Your answers are there No -ck has not retired per-se, he is a medical doctor and still runs the solo.cksolo pool but yes for a long t*he* ime no longer supports any cgminer code and closed its thread here in the Forum. For him coding was always more of a hobby.That said - Kano who was the 2nd primary developer of cgminer DOES still fully support it and is the only one continuing active development. Kano IS and always has been a professional coder so his code is well tested and solid. No dev fee crap or any other nefarious crap in it. ONLY download from that link because yes there are MANY hacked versions out there with who knows what code in them. Kano's latest version currently provides support up to the Bitmain s17 chips with s19 in the works (both for Sidehacks miners).

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16512,"Date: 2023-05
Topic: Can someone mine my small transaction
### Original post:
The fee is $5 sending $31. I get paid Friday midnight direct deposit ill shoot you $35 without the fee any pay method you want. Heres the <truncated>

### Reply 1:
okay I think you are saying you have a stuck send transaction.<link> this it?you paid 25 sats which is way under the 100-150 needed at the moment.viabtc.com has a free accelerator<link> is open from about 00:58 to 1:021:58 to 2:022:58 to 3:02enter this as it is your <truncated> it each and every hour till they say you have been accepted.on it say the transaction is being accelerated it takes 2-12 hours to be accepted.now is not the time to send small amounts and pay small amounts as a lot of gear is shut down.good luck

### Reply 2:
Thank you guys so much

### Reply 3:
Can someone help my transaction confirm? It's been stuck for a week and a half. It was sent from cashapp so am unable to pay a higher fee they won't do anything to help ugh. Pretty please <truncated>

### Reply 4:
I've submitted it at antpoo

### Reply 5:
I found this one worked better for me.It also tells me if i still have 0 verifications or not, which is nice:<link>

### Reply 6:
How does actually work?The site was built with WordPress and the template or design was created from Elementor. I tried to inspect the website and see this under the TXID box ""<div <truncated> which only works for searching inside your WordPress website. Are you going to fool us? Today is not April fools day?

### Reply 7:
I've accelerated it for you at ViaBTC. It should be mined in the next few hours, depending when ViaBTC pool with find a new block.Update: it has already 5 confirmations

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23097,"Date: 2019-10
Topic: Chinese Power supply - Can i source a small replacement fan?
### Original post:
If you carefully disassemble the cooling fan,you should be able to see it's technical specs sticker.And then you can also take a measurement tape and measure it's dimensions.

### Reply 1:
Thanks, will have a go later.EDIT, it's a Foxconn 40mmx40mmx28mmIts a 4 wire but only he re and black are used.I presume Ebay would be my best place to look?

### Reply 2:
I'm based in the UK and have gone for this with a slightly higher CFM.<link> i checked here as i was going to bin it.Thanks for the advice.

### Reply 3:
Hi AllOne of my PSUs has stopped running, turning off after 10 mins due to overtemp.I just checked it and the problem is the fan is not running?It only a small fan built into the input end.Are replacements available for these? What size/rating would i need??Pics Attached.<link>

### Reply 4:
Depends on where you are. And how fast you want it.In the US NewEgg or Amazon might has them.<link> if there is one near you might have something.Other parts of the world will vary.A local PC repair place also might have something.-Dave

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22984,"Date: 2019-06
Topic: Recommended PSU for Ebit E10.2 - 27TH?
### Original post:
Hello,I have a bunch of E10.2 miners coming in. These miners usually come with 2 original PSU's. I'm looking for a way to install them with one good quality PSU instead of 2 crappy original PSU's per miner.What 2500+ Watts PSU do you recommend that has a long-lasting quality for these miners?Thank you!

### Reply 1:
Well first I would look for a PSU attached to any other miner, sorry had to. Ebit has a terrible name for quality so I hope you have a better experience. If I had to buy something 2500W or more I wuold go with these guys AmityLabs, I have several of their PSU's that have been awesome with at least 1.5 years of steady use. Below is a link to one of their models that would work for you. <link>

### Reply 2:
These are good psusThey will do 2700 watts non stop with no issues at 92% efficiency.They are loud but good.I do not know if Ebit uses a 12.2 volt psu or if it variesMost new gear floats power on the psu the controller tells the psu 11 12 13 14 volts

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23165,"Date: 2019-12
Topic: Help With The Best Operating Practice's For The S9k
### Original post:
hello all my wife are very new to the farming just got our first S9k what is the is the best way to run these S9kI read a little rebooting every 12 hours is that any good or should we do 6 hours? and what are the best poolswe started with slush poolthank you in advance

### Reply 1:
if you reboot your machine is not mining for two to ten minutes.if your machine is not mining when slush hits a block you earn zero.so dont reboot two or four times a day and mine on slush.i have around 80 or ninety units four of them are s9k units.i simply check all my units four times a day and if a unit has an issue i reboot it.i mine on <truncated> gear is on pool.viabtc.com

### Reply 2:
I'd say if you just got it, start by configuring it to mine over to slushpool and watch it for a few days. If running on a 110 volt outlet (not a good idea IMO) keep a close eye on the power plug, cord, and the circuit breaker (use a finger to feel if the breaker is warm) to make sure your home wiring is not getting hot. Don't run it on an extension cord. Keep an ear out for the fans, listen for unusual sounds that might indicate a bearing failure (used miners can have this issue). Use your nose to see if you smell any wiring <truncated> keep an eye on the hash rate: You probably don't need to reboot it daily but let it run and see.I run mine as a hobby miner/test bed for weeks without rebooting, stock firmware. With two boards enabled, it mines at a solid 9gh as reported on Slush and pulls 1,000 watts from the wall as measured by a P4 Watt-meter. That is about as much as I will put on a household 15amp 110 volt circuit. Once you have a good idea what it does, then start fiddling with things like new firmware, low power mode, and the like (if your firmware supports low power mode turn that on).Welcome to the network!

### Reply 3:
i have brand new unit not second hand and we running 240v and all my sockets are high voltage i do not take chance at all and we are fireman paramedics here all good we just super noobs to btc lol

### Reply 4:
Good. The number of systems I have fixed due to burned.... stuff.... is something that's in the back of my mind. Still, I'd say start by running it for a few weeks to get the hand of it to establish a baseline, then go from there. Would probably be worth it to enable high efficiency mode to reduce heat, wear, and minimize power expenses.

### Reply 5:
How many new wives you got? ok jokes aside, I am not sure where did you get the piece of information that states you should reboot your Antminer S9k, these miners are supposed to run 24/7 without the smallest break unless of course required.I mine mostly on viabtc just like phill does, and i have their app on my phone, so i can watch the hashrate 24/7 , they also send me an email when something is wrong with the hashrate or the number of online miners go below a certain number, if you have a lot of gears, you can get something like Awesome Miner to manage your miners, but if they are just a few then no need to do anything except for making sure they run cool enough, and just let them mine until they can't.

### Reply 6:
Where did you even read that? These asic miners are meant to be turned on and let them run nonstop. The only reason mine would reboot is if there is a power outage, of if it needs to be stopped for cleaning...The best pool is a long and lengthy debate for the pool section. PPLNS with the highest hashrate, which Slush has the largest. But, the min payment there at 0.01 BTC it would take you like six weeks to receive each payment. Something like ckpool / Kano would be best if they had a big enough hashrate (100+ TH), but they don't so its about the same. And the PPS pools all take 4% rather than 2% or 1% the PPLNS pools take.TL;DR: Do NOT reboot the miners.

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22861,"Date: 2019-02
Topic: avalon 6 connection problem
### Original post:
hey all i just picked up 2 avalon 6 machins with psu and controllers my problem is that after connecting everything and setting the ipv4 settings to 192.168.0.101 and saving i cant connect to the user interface on chrome by entering 192.168.0.100 this is my first miner setup and i would really like to get it working if anyone would feel up to helping me out id appreciate it greatly

### Reply 1:
Did the controller (Raspberry Pi) come with a software installed already? Maybe the previous owner has set the network settings to DHCP mode, which means that it will get an IP address automatically. Have you looked at your router's web configuration page (usually 192.168.1.1) and the list of connected devices in the local area network?

### Reply 2:
If it's DHCP mode the IP you use will not work. You can try to scan your IP using angry IP scanner if you don't know how to do it follow this guide belowSource: How to use Angry IP Scanner Beginners Guideand then use this ip range 192.168.0.1 to 192.168.0.256 or this IP range 192.168.1.1 to 192.168.1.256If you can't find the IP maybe your miner is brick or your SD card is broken try to install a new SD card and flash it with firmware you can find the firmware from here <link>

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    ""hardware_name"": ""psu"",
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  },
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    ""hardware_name"": ""controllers"",
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  {
    ""hardware_name"": ""Raspberry Pi"",
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    ""hardware_name"": ""router"",
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    ""hardware_name"": ""SD card"",
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]"
23220,"Date: 2020-03
Topic: Avalon: Can I use same generation 8XX asics on same controller
### Original post:
I learned a while ago that I could not get a 741 to be picked on my 8 series miner. (running daisy chained).But can anyone confirm I can run a 841 alongside my 821 I picked up? I think the firmware's are series specific such as 7xx, 8xx, 9xx.Thank you.

### Reply 1:
beside updates there is no problem

### Reply 2:
Yeah if you are not going to do any updates you can use same Rasp Pi.If you do updates with such setup, you will face troubles.

### Reply 3:
All very true but it is still odd to see a cluster of miners with some of them running different speeds. What does not help is that which miner ID is which actual miner will change when a miner restarts on its own (or if you reboot it).On mistakenly crossing the updates, if you do that a miner can still be accessed and set right. Just isolate the erroneously updated 821 or 841 from the others, apply the correct MM to it and all will be well again.

### Reply 4:
Can you run them together? Yes. Should you do that? Not really. Just as with the A721/741 series, the 821 and 841 should have separate controllers.One reason deals with firmware updates, an update runs on ALL miners attached to a controller and the MM updates are specific to miner type. An 821 does not like thinking it just became an 841... (been there, done that)

### Reply 5:
I was able to get an 821 and and 841 running together. not worrying about updates as it is up to date for now.thanks for all info.

","[
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    ""hardware_name"": ""741"",
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    ""hardware_name"": ""821"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""841"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Rasp Pi"",
    ""hardware_is_owned"": true
  }
]"
23308,"Date: 2020-08
Topic: AVALON 841 Farm Help
### Original post:
Hello,I have multiple small bitmain miner(16 miners or so) setups, but we are looking at setting up a farm of 400 Avalon miners(used and cheap). We have access to pretty much 100% free power using waste gas to generate power. Im not familiar with the Avalon miners but do I need anything special or can i just plug them all into compounded routers and switches? What are the controllers i see for?

### Reply 1:
so short answer is you have to chain them cant just plug them into the internet like i do with bitmain

### Reply 2:
Very depressing that so many tech folks do not know how to use a search engine...Using ""how to connect Avalon miners"" brings up a slew of very detailed answers. This is the best oneCorrect. However, unlike BM gear they are extremely tweakable and damn near bulletproof.

### Reply 3:
Since yer looking at 841's,you may want to investigate Canaan's Moose - a module that pre-packaged 12 of them with controller, PSU's and 2-plug power in a single easy to connect unit. Even the power input of 365-418VAC 3-phase w/neutral should fit right in with typical large field operations gensets. Not sure how many of them Canaan sold but chances are there are some out there at a good price...That said, the Avalons are the best way to go considering you are using flare gas. Look at it this way, would you rather track/control 400 different IP addresses having to set worker name & pool info on all of them? Or, would you rather just deal with 20 841 clusters, each cluster being 20 miners with a single IP address and mining info input?Accessing a controller will give you stats on all 20 miners attached to it including the option to individually reboot any single one, multiples, or all of them.

### Reply 4:
the rasp pi controller can do four ports each port will run up to five 841so 20 per rasp pifour hundred 841 means400/20 = 20 rasp pis at best.for practical purposesusing four ports with four miners doing 16 per rasp pi is more reliable.so plan on 400/16 = 25 rasp pisnow there are avalon firmwares to load on a sdcardyou need 1 sd card per rasp pii have not run avalon 841 in years.but you need to find firmware image on avalon website and match to proper rasp pi.ierasp pi 2rasp pi 3rasp pi 4all would need proper firmware image.I will look to see which images are available so you can buy correct rasp pithis is a mining support question so i am asking to have mods move it to btc mining support section.I asked mods to move this to mining <truncated> you to all canaan firmware.including 841 firmware.but i simply dont remember which rasp pi you need.btw you will need a lot of specialty wires and dongles.four dongles to a rasp pi.which means a lot alsoa daisy chain wireethto rasp pi4 wires to four donglesthen you have four daisy chainsdongle <truncated> is a lot of wiring to do.that is 25 rasp pi with four portsand 100 four miner chains. like the one in boldyou do save on eth cables only 20<rest of post truncated>

### Reply 5:
Once you get past the wiring the gear is very good.

### Reply 6:
Read my 841 guide, the link is in my signature

### Reply 7:
Okay Guys, thanks I was unsure of the Avalon's since i have zero experience with them. the 841's look like they are rated at 13.6 with a max of 14.3, would it be safe to assume 14.0 th when working my economics?

### Reply 8:
There is a downside to this way of operation, having 400 individual IPs and most importantly workers gives you the ability to keep track of everything from the pool-side, when I look at the pool status using the app on my phone or a ""watch link"" even from untrusted device, I can tell if there is a problem with any given miner, so i can call my guy and ask him to reboot miner xxx.Having 20 miners with the same worker will require a local access in order to troubleshoot the bad unit, also as far as setting up a ton of miners it's no longer an issue with so many programs that will handle that for you in no time, so this isn't really an advantage but rather a disadvantage ( a minor one to be reasonable), however, less network cabling / switches is the only advantage in having clusters of 20 miners.With that being said and without owning any of these avalon gears, based on your words and the other trusted members, I can tell that they are way more robust than the equivalent of bitmain's S9, the only advantage that S9s have over these gears is the ability to downclock them down to 70w/th, not sure of these Avalon gears can do 70w/th but since he has free power his main focus should be on<rest of post truncated>

### Reply 9:
No think 13.0. always better to fudge in less profit.Then if they average 13.8. you think the .8 is a bonus.Also 20c is a ambient temp 40c is not.So they run better in 40-60f temps. then 90-100f tempsI would think you get 13.8 to 14 in the cooler weather.and 13.1 to 13.6 in the hotter weather.oh they run a little higher hash with four chains of fourthen with four chains of<rest of thread truncated>
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    ""hardware_name"": ""routers and switches"",
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    ""hardware_name"": ""Canaan's Moose"",
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  },
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    ""hardware_name"": ""rasp pi controller"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""sd card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""specialty wires and dongles"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Avalon 841"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""bitmain's S9"",
    ""hardware_is_owned"": false
  }
]"
16455,"Date: 2023-03
Topic: Are you hodling your old usb ASIC miners?
### Original post:
Just came across this and thought I'd share. Apparently those bad boys are now going for ~100 each as collectibles. I knew this will happen eventually I remember paying 10 (incl. postage) for mine in 2014, so that's an impressive return of over 25% p.a.But I'm not selling. Ever.

### Reply 1:
I have one of the first ones, they sent me in a box with a ribbon on it (that I still have)Not gonna sell it thought.Funny that they'd prolly make less than 1c a year but people will buy them and try to mine with them.

### Reply 2:
It's great that bitcoin mining devices such as USB Asic become items for collectors, this is the same thing that happened for example with the first copies of Nintendo, but it seems to me that the time has not yet come for Asic.

### Reply 3:
Anyone can attempt to sell old ASIC at high price, but i have doubt there are any buyer for it. There are too many variant of USB miner out there and Bitcoin mining isn't very popular even among Bitcoiner, while casual hobbyist would prefer newer USB miner such as Compac F.

### Reply 4:
I just hope there is bitcoin mining hardware museum and be part of history. I remember I had USB miner called USB Dragon it from china and have 1 Mh/s bulky looking and very hot and comes with 8gb of storage

### Reply 5:
Such museum is exist, see <link> There are 2 topics on this forum which discuss this museum,Meet the world's first Bitcoin Mining MuseumRe: Is it worth collecting old ASIC miners?I think you wanted to say 1 GH/s (not 1MH/s).

### Reply 6:
That's true that anyone can set any price they want, but all listings for this type of miners were broadly in a similar range, while newer generations (but still obsolete) were notably cheaper. Some of them had some sales iirc (I haven't done any proper research on it though, just a quick check). That could be a sign that the collectors' market could be slowly shaping in. Of course, there's no chance for any massive demand, probably just sentiment buyers.

### Reply 7:
Dude you are really bring back my memories I just saw the gallery and found back the old times miner like gridseed, Zeus, and SpoondoliesMy bad it is actually only 144Khs and has Scrypt Algorithm Maybe you never seen in one Here the picture

### Reply 8:
From my quick search on ebay.com (with keyword ""asic block erupter""), there are very few Block Erupter listing which has been sold/has bid. And most them has price <$40. So i still stand with my own opinion.I see, i thought you're talking about Bitcoin/SHA-256 ASIC.

### Reply 9:
My Friend had Antminer S9 pro and at that time it was super good and He was making A lot of money from this. And also at that time I do not have enough resources to buy this. I tried my best to get loan from banks and they didn't give because I was Student and have had no any backup and I regret this till now. And It brothers me sometimes.

### Reply 10:
Yeah, you had no chance of getting a loan from a bank without an income and if you told them it was for the purpose of bitcoin mining - you would make it even worse.At least you tried.

### Reply 11:
Yep, but only the first ones made...I have one bnib Asicminer block erupter (never used, only tested once) andone bnib BFL jalapeno miner (tested twice-three times, by me) = brand new, with box etc.update; because of reading this post, I just took my old BFL Jalapeno of the shelve to give it a good dust of...Whew, it was dusty, just from standing around and looking in the chamber.Good to know, the original box was there to comfort him I have these for my collection, so to hodl, but I see no reason ever selling them, because I don't think these will be worth SO MUCH to make it tempting to sell.

### Reply 12:
And I also found my old 60GH Avalon Mini TP-Link TL-WR703N controller.The miner itself (back then) was complete broken, I could only ""rescue"" the controller, for spare parts.And strange thing is; This Avalon miner had the same GUI interface, as the future coming Antminer S1 tm S9... So WHO was first using this ""Antminer"" GUI interface?? Was it Avalon or Bitmain??Old cool stuff, maybe not a ""real"" USB miner, but old it is...

### Reply 13:
Wow, the prices are really amazing. Didn't think that so much money would be asked for these old usb block erupters. But it reminds me of the good old days. I still have 10 of these miners that I bought here in the forum back then. For me these block erupters are a nice memory and I will never sell them.

### Reply 14:
Is there anything these USB miners are still good for? Can someone run SOLo mining with them? Assuming one have up to good numbers of the USB miners will it make any sense running them for possible luck solving a block or two one day.

### Reply 15:
Same, I don't plan on selling mine ever. It's a part of history and it has a big sentimental value. I don't think anyone who has never mined any bitcoins would be as passionate about it as people who h<rest of thread truncated>
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  {
    ""hardware_name"": ""USB Dragon"",
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  },
  {
    ""hardware_name"": ""gridseed"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""Zeus"",
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  },
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    ""hardware_name"": ""Spoondolies"",
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  },
  {
    ""hardware_name"": ""Antminer S9 pro"",
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    ""hardware_name"": ""Asicminer block erupter"",
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    ""hardware_name"": ""BFL jalapeno miner"",
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    ""hardware_is_owned"": true
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]"
4008,"Date: 2020-01
Topic: [GROUP BUY 7 OPEN] Antminer 180GH @ 1.90 BTC - Chinese End of the Year Sale -
### Original post:
Any coupons for previous customers ? I only ask because bitmain is offering 0.2 coupons for recent customers.

### Reply 1:
I believed that coupons is for the sudden recent price change.Any purchases made via me (SUSHI) while the price was between 2.65 and 2.2 BTC, please PM me for the discount code! Unfortunately there is no GB1 - GB6 member discount on this round. This Group Buy is funded via TIPS from the members.

### Reply 2:
People that paid 4.25 and 3.15 BTC will have no discount?

### Reply 3:
If you paid 4.25 or 3.15, you have been mining for a while. A device purchased for 3.1 mining on Jan 1 is about the same a device purchased for 1.7 starting mining this coming Friday, as far as projected profits go.

### Reply 4:
This time I had to scarify everyone's equal discount vs last minute price drop to protect some of the group members by using Purchasing Power from the Group Buy...The next group buy, I will try to give discount or benefit to all the members!!SUSHI

### Reply 5:
Thanks Sushi, sounds reasonable. Lets see what the next GB <truncated> your point is seriously irrelevant.

### Reply 6:
I want to buy one Bitmain AntMiner S1, can you send it to Uzbekistan?

### Reply 7:
Hello, do this miners need PCI extension cable or are new model where power just plug & play? Thanks

### Reply 8:
Hi <truncated> btc sentpm and email sent too.

### Reply 9:
if I pay tonight or tomorrow morning, when it will be shipping on January 24-25?

### Reply 10:
Please rate!

### Reply 11:
Nice work , cxboy repost it to russian forum .with copyright

### Reply 12:
Worldwide shipping but Customs it your responsibility

### Reply 13:
Quick add to the ^ .You can choose a less expensive custom declaration but the compensation is less (risky).

### Reply 14:
I have many antminers in Kazakhstan, from there I can arrange to deliver to any contact you wish in Almaty or Astana

### Reply 15:
I want to do hosted option but the terms look different on the website, says ""3 months for .6btc"" - is there a discount code? I've never bought a hosted mining contract, would like more details on how that works: how soon would my miner be online? Do I need to provide my worker and pool info upon payment? Etc...

### Reply 16:
Mining contract will start 2 days after the shipping date. So this GB's shipping date is 25 JAN 2014 LATEST so your miner should be alive by 27 JAN.For the contract price, I will contact sushi about it, hopefully there will either be change here or on the website... I'll keep you guys posted!Thanks.

### Reply 17:
What would be the estimated shipping time to Canada for these?

### Reply 18:
as usual 3-5 days . most people receive on day 3 but it up to UPS .package will shipped before or on 25.1

### Reply 19:
Hello Sushi!I sent 1.9 BTCID: <truncated> you!

### Reply 20:
Thanks for the reply, I pm'd him but he's probably sleeping due to timezone. I just don't know, this says 2 months for .5 and website is 3 months for .6, tough call but website might be a better deal? Or maybe a typo here?

### Reply 21:
NO, no PCI-E Extension cable is needed. You plug PCI-E cable from the power supply right into to it!!

### Reply 22:
Thanks sushi, is still posible to buy one now?

### Reply 23:
My bad, 2-month option was not activated. Now it is a along with 3 month!Hosting start a day or 2 days after the shipping date. We do need a worker info. After the purchase, please submit the worker info from a Help Desk Ticket (Hosting)

### Reply 24:
Most major location in the world in 3 business days via UPS but that is up to them. The fastest reported is 2 business days but please expect 2-3, may be 4 days if the weekend is in betweenThank you!

### Reply 25:
Are there any issues with customs or other fees for shipping to California, US?Also, if I order an Antminer now, do I get that .2 BTC rebate?Thanks,

### Reply 26:
I bought from sushi on Group Buy 5 and I'm from Southern California, US and no problems at all. I didn't pay any customs tax or any $ out of pocket (except for the PSU which make sure you buy and get ready). Hope you'll have the same experience. I got mine in 5 calendar days and that's with a major holiday Jan 1 in the middle of the schedule.

### Reply 27:
Ok, thanks. Ordered, paid, and sent my worker info via PM and ticket. Thisis my first time around the block with a group buy hosting thing, please confirm if everything looks good on my order.

### Reply 28:
I am about 79% certain I'll never see this device or BTC again. Sushi seems a bit less risky than well, EVERYONE ELSE. BTMine, HashFast, Inaba (BFL), etc.etc.etc. I still monkeys with typewriters have better odds of solving a block than an asic shipping on time.

### Reply 29:
Payments made within the next 3 hours will be on the 23rd JAN 2014 shipping list. Act quick Regarding to Hosting confusion:2-month contract is now available alongside the 3-mont<rest of thread truncated>
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    ""hardware_name"": ""Bitmain AntMiner S1"",
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22966,"Date: 2019-06
Topic: T9+ Not hashing
### Original post:
Try to follow these steps below. - First, try to hard reset it first you can follow the guide from here How to reset miner to factory settings Ignore the 2nd method and make sure to follow the 1st and 3rd method then test it again.- Flash the miner through WebGUI you can download the firmware from here <truncated> Then test it again if it works. - Flash the hashboard with Pickit 3 with working hex you can revive the hashboard if you have a working hex file and if it's related to a program. If it's a hardware issue you can follow the step below.- Replace new working hashboard or if you have extra miner test them one by on. You can follow the guide here Test hash board one by one

### Reply 1:
HelloI got Antminer T9+ I rebooted it a few times, made recovery from sd card , changed psu and cables and nothing - boards not appears. attached screen shot and logs. what can i do?Thanks<link> 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.<rest of post truncated>

### Reply 2:
hi, i look your kernel log, and your problem is ONLY on your PIC !!! Probabely the firmware is bad ...at first time, flash your T9+ by web page ( <truncated> ).Turn off your miner, and take out your boards.Follow my tutorial <link> !!!!

### Reply 3:
ordered pickit and i hope for good thanks

### Reply 4:
Hello.I followed all procedure and flashing is done successfuly with PICKIT. after reconnecting all again i still have 000000 ghz. see kernel log. (i also flashed the official firmware to the controller.)what can cause it ?Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists i<rest of post truncated>

### Reply 5:
Where did you get the hex file?Make sure that you flash the hashbord with a working hex file from a working t9+ miner if you just dump the hex file from the same miner it won't work.That is why you need extra t9+ miner or request to someone here on the forum if they have a working hex file for t9+.

### Reply 6:
I used the file from here: <link>

### Reply 7:
It should be work unless if the miner has other issues. Did you try flashing the miner through the web interface or in the dashboard?And please do what we suggest above don't focus on flashing the hex file since you successfully flash it you shouldn't be a worry again with the program of the hashboard.I suspecting PSU it seems it's not supplying enough power that is why your hashboard is not running properly.Do you have any extra t9+ miner? if you have please try to swap the hashboard first to test if the issue is from the hashboard or control board.

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  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Cables"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Pickit 3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Hashboard"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""Control board"",
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]"
23240,"Date: 2020-04
Topic: S17 Pro no longer hashing
### Original post:
Five lines up from the bottom shows:2020-01-25 20:58:25 <truncated> No valid pools, please configure them first!Nothing happened to the pool info, did it? Maybe got garbled, or the dreaded hidden <space> at the end?

### Reply 1:
Thanks all. I'll replace the fan and report back.

### Reply 2:
Good luck with this. Please post results. TIA

### Reply 3:
Hi, My miner was working fine, but then stopped working. See the screenshots. Any suggestions?The miner status page doesn't contain hashing info.Code:HW Version: Socket connect failed: Connection refused.In the log, i noticed some a single fan failure.How can i attach screenshots? lolCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash t<rest of post truncated>

### Reply 4:
Here's the latest log:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203612K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss<rest of post truncated>

### Reply 5:
please read all of this right to the end.you have a bad fan it may spin but it does not register the rpm some times this happens.you need a fanare you usa based?this should work<link> any I give you should work I don't know the sellers<link> may or may not need these<link> these from bitmain may be very slowyou will need both parts<link> to do this test switch the bad fan with a good one.if the problem follows the fan you have a bad fanif the problem stays with the fan power slot you have a bad <truncated> are sold out <link> for Control board for S17, S17Pro, T17

### Reply 6:
Before you waste your money and time on a new fan, you must first confirm that the control board is actually correctly reading the FANS' rpm by swapping fan 0 and fan 1Code:2020-02-07 23:11:33 <truncated> fan_id = 0, fan_speed = 0The S17 pro has 4 fans labeled as Fan0, Fan1,Fan2 and Fan3, after swapping the cable from fan0 to fan1 you will get one of two <truncated> 23:11:33 <truncated> fan_id = 0, fan_speed = 5xxx2020-02-07 23:11:33 <truncated> fan_id = 1, fan_speed = 0This indicates the original fan0 (now fan1) is bad and needs a <truncated> 23:11:33 <truncated> fan_id = 0, fan_speed = 02020-02-07 23:11:33 <truncated> fan_id = 1, fan_speed = 5xxxThis indicates the fan has no problem but the control board fails to detect the fan due to a faulty socket or bad firmware.also in your initial post, there is a pool-related issue, you must use a working pool, if you are using nicehash which is known to have issues with these new miners, use another pool, actually use two pools just incase.

### Reply 7:
Thanks all. To verify that it was a fan issue, I moved a working fan connector to a different set of pins and saw that the list of working fans listed within the kernel log was updated to show the new fan location. I purchased and installed the fan below. That fixed my problem.<link>

### Reply 8:
You followed up thank you keep posting you now have merits so you will soon be a jr member not a newbie.

### Reply 9:
what is your firmware source?you will need a new fan for sure.but before you buy a fan<rest of thread truncated>
","[
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    ""hardware_name"": ""fan"",
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  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Control board for S17, S17Pro, T17"",
    ""hardware_is_owned"": false
  }
]"
23321,"Date: 2020-08
Topic: S11 not mining
### Original post:
hi. none of the boards of s11 are hashing. and this is end of its kernellogCode:get RT hashrate from Chain[0]: (asic index start from <truncated> Asic[02]=0.00000 Asic[03]=0.00000 Asic[04]=0.00000 get RT hashrate from Chain[1]: (asic index start from 1-84)get RT hashrate from Chain[2]: (asic index start from 1-84)Check Chain[J1] ASIC RT error: (asic index start from 1-84)Check Chain[J2] ASIC RT error: (asic index start from 1-84)Check Chain[J3] ASIC RT error: (asic index start from 1-84)Done check_asic_regread failed on Chain[0] Chip[18] middle Temp old value:15Special fix Chain[0] Chip[18] middle Temp = 15read failed on Chain[0] Chip[34] middle Temp old value:15Special fix Chain[0] Chip[34] middle Temp = 15Done read temp on Chain[0]Done read temp on Chain[1]Done read temp on Chain[2]Max pcb temp : 0FAN PWM: 40read_temp_func Done!

### Reply 1:
At first glance it looks like temp sensor failure or PSU. But I could be wrong as I do not see full Kernel Log.

### Reply 2:
It seems that the miner is overheating that's why it shows abnormal temp.It would be better if you can share it with us the full kernel logs as suggested above.According to partial logs above it seems that the fan is set at low speed ""FAN PWM: 40"" and it seems that the miner is overheating that's why it shows abnormal temp I guess.If you don't have extra power supply try to run the miner at low power mode.You can find it on ""miner configuration"" at the bottom under work mode.

### Reply 3:
I need to see the following:1- Miner status page (screenshot), use this website <link> to upload the image.2- I need to see a complete kernel log, use the code function as explained by favebook.3- Readings of the AC voltage.With the above information, I might be able to help you troubleshoot the miner.

### Reply 4:
hi,tnx for answering my question. i cant send all part of kernel log because its more than 640000 word. could u plz help me to upload kernellog?i changed fan and PSU but nothing didnt change.now i cant send all part of kernellog because its more than 64000 charecters.

### Reply 5:
I don't think so, no where in the kernel log where it mentions anything about overheating, it isn't possible because the miner only starts mining after this <truncated> Done!Whatever happens before is just testing the temp-sensors to see if they are reporting valid readings, the temps in the kernel log imply that the sensor readings aren't accurate and that's due to a bad PSU or dead Asics on certain hashboards, but without seeing the complete kernel log and all the other details we requested, all we can do is speculate.

### Reply 6:
You can upload them in separate parts on different posts, alternatively, you can use something like <link> and post the like there and then copy-paste the URL.Also upload the miner status page, pool settings using one of these websites <link> or <link> ( you can hide a part of it for privacy).

","[
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    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""temp sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fan"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Asics"",
    ""hardware_is_owned"": false
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]"
11376,"Date: 2023-10
Topic: Antminer S19 95TH setup
### Original post:
Hi BitMaxz,Thank you for the offer. The only think about checking the contacts, I do not know how to do that w/o voiding the warranty, OK?In the meantime, here are the <truncated> node 0, pgdat c0b3c040, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf0000 s19916 r8192 d21044 u49152pcpu-alloc: s19916 r8192 d21044 u49152 <truncated> 0 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 209652K/245760K available (6317K kernel code, 243K rwdata, 1932K rodata, 1024K init, 232K bss, 19724K reserved, 16384K cma-reserved, 0K highmem)Virtual kernel memory layout: vector : 0xffff0000 - 0xffff1000 ( 4 kB) fixmap : 0xffc00000 - 0xfff00000 (3072 kB) vmalloc : 0xcf800000 - 0xff800000 ( 768 MB) lowmem : 0xc0000000 - 0xcf000000 ( 240 MB) pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) modules : 0xbf000000 -<rest of post truncated>

### Reply 1:
Could be the power bar, could be the cable.I would wait to hear back from the seller.Here in *theory* taking it apart and checking the cables should not invalidate the warranty since you do have to pull miners apart now and then to clean out the dust.In reality, since you bought it from a reseller through Amazon, they can make any rules they want about what you can and cannot do. I would wait to see what they say.If they don't respond or fix it for you get Amazon involved as early in the process as possible. -Dave

### Reply 2:
They sent me a video on how to remove the upper housing to check the contacts for the connectors.I am going to do that, and if it does not solve the issue, I hope they will send me another miner. Till now they were very friendly.I hope it is a loose contact due to the transportation. It worked for a short while, and I had awesome hash rates, but very short.In case they try to pull my leg, I will involve Amazon soon enough.Thank you

### Reply 3:
Hi,I am new to mining, and am about to get towards the end of the month a new Antminer S19 95TH, so, as I have some time to prepare/plan, I was wondering if I could get some advice on how to set it up:- I was told that I need a separate line of 220V, however I was thinking to get a step-up trafo from 110 to 220V having 5000W. Is this OK?- I understood that the antminer comes w/o any power cables, so I have to get 2 power cables (similar like those for PCs) from what I could see on its picture, correct?- what software do I need in order to have it mine properly?- in order to configure it, is it possible to connect it to a monitor and a keyboard?- I saw on a tutorial video that the miner needs 2 cables, so would I also need a UPS to plug those cables?- as sometimes most of tutorial videos are pretty old regarding pools, and software used, is it possible to get a link towards a more recent video?- do I need a cold wallet? I have right now 2 wallets on Crypto and Shakepay, however I understood that more securely would be a cold wallet, so which one would be a good one to use?I am going to consult also this forum and see what I can find as information.Thank you

### Reply 4:
I assume you have a usa based home due to 120 volt power.Transformers are hard on the wiring.if you bump a 1 line 120volt wire to 240 via a transformer then pull 5000 watts you will very likely melt it.consult an electrician ask for a 220-240 volt line with a L6-30r receptacle<link> will need 10ga wire and a 30 amp 2 pole circuit breaker. like this <link> this cable<link> this cable<link> 1) 30 amp 2 pole in your circuit box2) l6-30r receptacle on the wall wire with 10 gauge wire3) l6-30p to c19 10 gauge 10 foot cable4) c20 to c13 that I listed.Should be safe up to 4000 watts or easy peasy 1 s19lastly do you have hard wired internet with eth cables?

### Reply 5:
You could, but I would advice against it, there would some energy loss in this process, better to install 220v.It's called C13, ya it's the same plug as the one you use on your PC, but sure thing is, it isn't the same rating, you are going to need each wire to be at least 1.5mm square thick.Nothing, just your Chrome browser or whatever you already use.No, you use your laptop / PC, write the miner IP address on the browser, and you will be inside the miner to do the pool configuration.You mean PDU? you can, or you can just get the Y split cable that phill posted above, the only issue with that Y spilt is that your breaker/socket need to handle the entire amp draw whereby using 2 single cables the load is divided.Nothing has changed ever since, all you need is pool URL and a worker name.Your mining payouts will be sent to whatever address to <rest of thread truncated>
","[
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    ""hardware_name"": ""Antminer S19 95TH"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power bar"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""step-up trafo from 110 to 220V"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""power cables"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""UPS"",
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  },
  {
    ""hardware_name"": ""L6-30r receptacle"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""10ga wire"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""30 amp 2 pole circuit breaker"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""l6-30p to c19 10 gauge 10 foot cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""c20 to c13 cable"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Y split cable"",
    ""hardware_is_owned"": false
  }
]"
23060,"Date: 2019-08
Topic: Antminer s9 hashboard lights go off after one minute 0GH
### Original post:
Following an upgrade of firmware the hashboards on my s9 light up when the unit is restarted but after a minute the go off and there is no hashing going on.Already tried.Reboot = no changeRestore = Cannot Find <truncated> using all the available updates on Bitmain's <truncated> Bitmain fix firmwareI do have one dead hashboard in the unit, it never worked, but the other two worked, but now only light up for a minute, just as the fans kick in.Any help appreciated.

### Reply 1:
Do you have kernel logs? Can you copy it and paste it here so that we can review if what is the problem why you get this issue.You can find the kernel logs from system>kernel logs then copy them all and paste it here <link> put the link hereor use this code below and put your logs inside the codes

### Reply 2:
Thank you for your reply, here is the kernel log.Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c074ac00, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256528[ 0.000000] Ke<rest of post truncated>

### Reply 3:
You are getting weird fan speed which reaches to 11160 RPM I don't know if it's a front fan(intake) or the exhaust fanCode:get fan[5] speed=11160get fan[4] speed=6000get fan[5] speed=11160get fan[4] speed=6000get fan[5] speed=11160The normal fan speed in the front should be around 6000 rpm and for rear fan should be 4300 rpm so maybe your exhaust fan is defectiveYou also got 0 ASIC number to all of your hashboard with no temp. Code:Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J6] has 0 asicChain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 <truncated> = <truncated> = 0x00000000retry Chain[J7] has 0 asicChai<rest of post truncated>

### Reply 4:
Thanks for your detailed response!I will need to break this down a bit, my ""mining operation"" currently only extends to a single machine, so no easy way of swapping bits.Should I start with new fans? or a new power supply? The hashboards could be dead? or would they automatically be stopped from working because of fan issue?

### Reply 5:
This is a common issue on s9 what we can do for now is software if you don't have extra miner and PSUs for troubleshooting. Can you revert the firmware back to autofreq firmware? Try this firmware <truncated> set the pool and reboot after setup the pool then run the miner for 20 minutes to warmup and let the auto tune find the optimum settings. lets see if you get hashrate with this firmware.

### Reply 6:
Thanks, just tried, got an error, Cannot Find Signature!!! when installing. <truncated> also tried s9_fix_upgrade .tar.gz same result.What next?

### Reply 7:
There's two option to do to bypass this error when flashing check this 2 option below.- How to bypass """"Cannot find Signature"" when updating your antminer firmware.or make- S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery with SD card to force the miner to flash the firmware.

### Reply 8:
Hi BitMaxz,thanks so much for the help, I have over the many months tried many different fixes, I'm still not 100% sure what went wrong, I have been able to load new firmware, but still the hasboards go quiet.I have just bought a new s9 and are starting over.I have a question about what is the recommended driver for new miner, I will post as a new topic.thanks again for your great help, I know a lot more about<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Antminer s9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""fans"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ASIC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Control Board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  }
]"
16555,"Date: 2023-07
Topic: El Salvador to develop mining farm Using Volcano Energy
### Original post:
El Salvador's Government is trying his best to expand bitcoin to a very large extent so recently they given out a latest news again to launched another mighty project in bitcoin Mining field again that they are planning to launched the largest bitcoin Mining in the world which will be using volcano power/energy to supply electricity to the mining plants. This is a good plan because if really the plan project is achieve. Electricity is one of the major issue in the mining of bitcoin field.<link> you can get more on the above link to support your comments.

### Reply 1:
I mean this would be great if they realized it. But first thing first how to get the energy from the volcano Im I missing something here or I am just dumb Like how? I know Coal powered, solar powered or nuclear powered but this is new for me.Although if this happens meaning the electricity is cheap right and this is categorized as clean energy right?

### Reply 2:
Not sure using Instagram as a source is really a good idea. Some comments also suggest that this is old news. The latest news regarding El Salvador mining is related to this one[1]. Not sure if Bitcoin Magazine is mixing up volcano energy with a company called Volcano Energy or not, but it seems like recycled news.If the OP is referring to the news I linked below, then it is using wind and solar energy. The article claims that it can work together with the geothermal energy mentioned last year, but it is unclear how it will do that. [1] <link>

### Reply 3:
You add water and turn it into steam the steam drives a turbine.You recycle the steam and let the volcano heat it again.In a sense its clean energy.Ie volcanos are dirty but give heat.This adds no extra dirty and lets the heat be used and not be wasted.The volcano would give the same fumes and dirt if you left it alone.So no added dirt and fumes.Plus you make power.

### Reply 4:
I'm not really a physics person, but how is the volcano supposed to give off heat when its not erupting?(And conversely, unless infrastructure for the power plant is extreme heat-resistant, it will also be damaged and/or swept away during the eruption. Won't this risk actually jeopardize the plan for volcanic energy, or are they only using dormant volcanoes for this purpose?)

### Reply 5:
A volcano is always hot, magma is always present below or penetrating the continental crust or mantle, the harnessing of the energy doesn't happen in the cone or from the vent where magma flows but from the surrounding area which is heated by the magma. It's the same basic geothermal powerplant, just add some fancy words to it.Iceland's geothermal energy is basically the same, the heat comes from the Atlantic ridge between Nort America and Europe, but nobody calls it volcano energy, or tectonic energy, or whatever another name.That aside, this is another publicity stunt from Bukele, remember that he already dug a 100MW two years ago? What happened to it? Crickets!<link> but Solar isn't getting as many tweets as VOLCANO!!!!I'll trust this plan of Bukele when that damn FSRU that arrived last year and is pumping tons of LNG in the country and generating 25% of the electricity will set sail from their main port!

### Reply 6:
That is the source the information which posted was gotten and that was why I use it in the post. I can't post another link that the information was not gotten from. And when a news is published there must be different opinions and views. As for me I have not even seen Volcano in my life. So I don't know whether it gives energy or not.The link you provided is also good but I didn't not get the information from there.

### Reply 7:
So it is basically the same with the GeoThermal plant. Meaning the energy that we get from this will be clean cheap electricity. , Maybe building the plant and using a volcano little bit risky and expensive at first. They name it like scary monster I just imagine how they drill the volcano

### Reply 8:
Sounds very dangerous to me. This sure would need expert engineers to make it happen. And presumably this volcano is active? I can already see the laughters of Bukele haters if all these go south.On the otherhand, this is also big if they can make this safe and work. If its successful it,wouldn't be surprising to see other countries with volcanoes try also.

### Reply 9:
Clickbait, but that's how you win the audience in crypto land.It's not dangerous, it's not something new and definitely not a scientific <truncated> already has geothermal powerplants that tap the heat in the soil generated by the volcano, they already built in 1975 and it was done using US and Japanese technology, there are plenty of countries who already use this, again, Bukele is making a big deal out of nothing.Philipines, Indonesia, Mexico, New Zeeland, USA, Italy, there is one operating 10 miles from an active volcano in the Hawaii<link> dangerous, nothing out<rest of thread truncated>
",[]
16036,"Date: 2019-07
Topic: My small mining farm
### Original post:
Nice looking space you built there, hopefully keep the dust bunnies down. I'm going to have that music in my head all weekend lol. I love the looks of your immersion testing, I haven't heard of it being more practical to use for anyone, but have always found it neat. The only critique I would have is you do still risk exhaust heat being sucked around to the miner intake. You should build a wall down the middle of the rack to create the cold isle on the intake side, and the warm aisle on the miner exhaust side. I'm not sure about your seasonal temps but you might have some issues down the line on warm days with the exhaust air if he fans aren't powerful enough. Congrats though on the build out.

### Reply 1:
Can you draw up some charts related to how much you spent and what kind of output you will get from this along with what would be your operational cost over the next few years? I want to set up a mine of my own somewhere and I need more real world data about the breakeven duration and if it is feasible and if I can afford it. Obviously, we all have to factor in the upcoming halving event.

### Reply 2:
Dust bunnies are being a huge issue during the summer with all these dandelions and poplars around.And the music... I heard that song a few weeks ago and it's still playing in the head I made immersion system just to test how it works. It all cost me about $700 to build.Now, knowing how to build such thing, I can cut the costs by 1/3 maybe.The idea is to seal the barrel, blocking the dust, pollen, puff, and even mice sometimes from accessing the miner.Next - I can increase speed, producing more hashrate per unit of equipment.And since it will stay cool most of the time, maybe it makes sense to even purchase used miners. The one in the barrel right now was purchased for ~$140 together with power supply and it has a stable performance at 15.5th/s while being in 80 degrees C mineral oil.And regarding the wall: The one you see near the miners is not a regular wall, those are the air filters. The whole wall is built with the used air filters (which can be exchanged when they get dirty). And another wall has exhaust fans.However, you are right about the temperatures, so while I was making this video today, there were few more larger fans installed (the largest we could find working with <rest of post truncated>

### Reply 3:
Hello fellow farmers,I just built a small mining farm and would like to share the result with you.Video:<link> are over 150 ASICs: 115 Antminer S9 (including i/j series) and the rest is filled with Antminer D3 (sad story).I am testing a home made immersion system to speed up Antminer S9 to its maximum speed. Summer weather makes it impossible at the moment, so it is just hashing at ~15.5TH/s, anything above that will require me to do one (or more) of these:- Put better radiator- Put better pump- Add water cooling ( will need to drill the well )If you guys have some suggestions about anything, let me know, as I would like to improve the farm ( but at the minimum possible expense )Upd: <truncated> submerged miner to 25th/s at night while it was cooler outside. Used 3 power supplies, set voltage on all 3 chains to 9.4V and frequency to 1000.Upd2 : Does anyone have any idea about economics of cloud mining? If I was to make something available for cloud rent, why would I do that? The only reason for doing so seems to be the lack of funds to purchase equipment myself, or to spread the risk onto others. But there might be other insights I am not aware of?

### Reply 4:
Brave man; I hope the halving would bring good news as well.I want to ask about the submerged mineral oil setup, please.Do you use a pump and a radiator to cool it down? If yes could you direct me to one that works well with mineral oil?also, I see in the pictures that you only submerged the ASIC what about the heat from the PSU, as that can build a bit in the covered barrel? Any worries about the mineral oil dissolving in time the rubber from any seals or cables?I like it as well as it is minimum maintenance, but even more due to noise reduction.

### Reply 5:
Dissolving them, no. However generic mineral oil WILL quickly make them rock-hard and make nylon (the PCIe connectors) brittle. In both cases that will lead to them eventually cracking.Using a silicon-based fluid such as those from Clearco Products is far far better.

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23208,"Date: 2020-02
Topic: S17 Pro Firmware Booster
### Original post:
Hi,Is there any available firmware to push a S17 beyond the standard Normal or Turbo Hashing rate of 50-63TH?

### Reply 1:
hiveon

### Reply 2:
Have you tried to check this thread below?- <link> is the only firmware that I think safe than downloading it to unknown sources.Are you talking about HiveOS or Hiveon pool?It seems that you are talking about the firmware from hiveOS.

### Reply 3:
There are probably a dozen out there, the only two that I would trust would be taserz aka Asic.to's firmware and awesomeminer firmware.Could there be any better than those two? well maybe, but the amount of fake and scam firmware we see every day stop me from vouching for any firmware which I have not tried/trust the developers behind it.Having said that, you should always be careful when attempting to overclock/boost your miner, you could easily toast it, stick to ""auto-tuning"" and/or refer to other user's outputs and what voltage and frequency they suggest.

### Reply 4:
You are right about this one, in fact, Patric from awesome miner himself confirmed thatThe dev fees on Vnish website are as follows awesomeminer's fees for S9 is 2% or 3% (without consuming awesomeminer license), for S17/T17 the fee is 3%, so that's anywhere from 0.1% to 0.4% more for awesomeminer, if you use awesomeminer to monitor say, 100 miners, then you have to pay 700$ for the software, so one should do the math and see if the difference in fees is worth the license and the features that awesomeminer provide which Vnish doesn't. If it makes no economic sense, one might want to stick to Vnish, I personally use awesomeminer and I count on it big time to manage my gears, so I wouldn't mind paying a little extra, but that is just me, everyone should run the numbers.

### Reply 5:
I mean that link is just a rebrand of vnish. Might as well just download it from the original.<link>

### Reply 6:
Last I checked awesomeminer is also a vnish re-brand. At least the S9 version they advertised was.There aren't that many firmware's out there, at least from looking through a lot of the bigger ones, they are all just a copy or a re-brand. And of course the crappy ones that don't actually do anything posted by <truncated> - when I say re-brand I mean the developer allows other companies / people to distribute the software as their own including putting another logo in it's place.My bigger reason to not go with a rebrand is support, the people distributing the software are just distributors. They did not code it and they do not know how it fully operates (they might know how it works), but if you read the docs / knowledge bases you can know just as much as them and more than likely if you ask a question that they don't know the answer to they will just middle-man it to the developer.

### Reply 7:
It can actually be more than that, it's all negotiation and quantity of miners running the firmware. If you have thousands you get a lower fee, in awesomeminers case the dev fee is 1% and awesomeminer adds 1% for themselves. The 17 series can be different but in awesomeminers case they take a portion so they can develop a management system that works better with that firmware.Now I have no idea if these features are worth it, they might be worth it to some. I've tried awesomeminer and I actually like it, however at scale it just doesn't make sense. It's a very nice ui and 90+% of the features can be replicated if it's worth your time. In my case it was since the work arounds to get awesomeminer to work the way I wanted it to just weren't there.

### Reply 8:
You realize that's not vnish website right? Vnish doesn't have a website. Alexander from vnish.net is not him lol. No is vnish.ru. you can reach vnish on telegram @vnish and he can confirm this. He owns vnish.com but doesn't run a website. He rather just have distributors take care of it for him and just work on the firmware. If you like I can list a bunch of partners for you or I can tell you 99% of S17/T17 firmare you see is his. That being said I know of a North American firmware being built and I will make a thread for that when it is out too!Also for what it's worth asic.to has the lowest fee you will find some other firmware builds will have the 2.8% as well. It's not made to make a ton of money and if your asking what do I get as a distributor very very little. I am just using it as a platform for big clients to test the software and see if they like it. Those interested I help them negotiate the best rate I can get them depending on the size of their mine. There are 2 main distributors myself for the english markets and another gentleman for Russian markets.Yes there are a few companies that run our firmware and add an extra fee on it to pay for their services along with di<rest of post truncated>

### Reply 9:
I agree with awesomeminer and many of your points.To the point of vnish and Alex, I've gotten different info out of both of them. Alex s<rest of thread truncated>
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10803,"Date: 2019-03
Topic: 2PAC extreme cooling / overclocking
### Original post:
The unlucky 2pac Sounds like a great project and will be keeping an eye on this thread. Gotta love a bit of extreme overclocking

### Reply 1:
After Scryptr made a passing joke about having a peltier/TEC, i decided to go out and do it.I have got 2x 40x40mm copper plates, 3mm thick to be heatsinks for the hot and cold side.a 12704 60w TEC, and a nice large heatpipe AMD cooler.the TEC will be run from a 5A 12v charger, and the 2PAC will have a 5v 4A wired into it to make sure i have enough ampage to keep it powered once i start going silly with the <truncated> will be sealed with silicone sealent to stop condensation.the unlucky 2pac will be arriving this week. will follow up with more pics and findings as i go.(i wont come crying to you if i blow it up sidehack) lol<link>

### Reply 2:
Looks good. Definitely a good idea coating it in sealant, quite a bit of condensation on that already lol

### Reply 3:
<link> is the preliminary test of the TEC mounted on the bottom of the cooler. needs to be mounted a little stronger, but a nice check to make sure everything fits before i start maing a mount for it.

### Reply 4:
nevermind, forget it. getting all my updates deleted now, so ill just keep it as a personal project.

### Reply 5:
Oh that's a shame that you didn't update this. How did it went?

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    ""hardware_name"": ""AMD cooler"",
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10869,"Date: 2020-02
Topic: My review of Avalon 841 .
### Original post:
It is being shipped by DHL and is due on Weds.Buysolar went to Beijing last week did training.The are shipping a 841 for us to test.They also demoed a racking system prototype.We are getting the 841 and will be testing it and demo with some youtube and various psus.I am curious to see if -1 setting using a corsair 1500 watt titanium will yield lowest watts per gh.Our cooling at the solar array keeps temps at 95f or lower in summer. It should be interesting to see if it holds up at that temp.DHL says item arrives on weds the 25th.

### Reply 1:
So 67f = 1366 watts76f = 1425 watts86f = yet to test.Phil your solar array is fan cooled and you put in some heat shielding but if I recall you run 2 to 4 degrees cooler then air temps.So if you are 90f outside temp the array is 87fThat would mean you should not run the Avalon 841 once you get to 90f .

### Reply 2:
@ yankeeswell a 60 watt power increase when I went from 67f to 76f translates to 60 x 24 = 1440 or 1.44 kwatts at 10 cents that is 14.4 cents a day extra.Here in NJ May 1 to Oct 1 would mean 5 months where temps will boost power so 150 x 14.4 cents = $21.60 extra to operate it at the arraySo the power boost means it is not unacceptable since the other 7 months it will drop.I can make the gear work at my array with buysolar. Mostly we have an excess of paid for gear.The 2 year warranty has a lot of value. and I figure 5 warmer months = only 21.60 per machine.I will need to test at 86f so I have turned on more gear in My garage to get an idea of what the machine uses at 86fIf I test beyond 86f it is as a service to community but for anyone running the gear in a 87f room or 31c room it would be running gear in a room too hot.<link> --lowmem --avalon8-fan 60-100 <truncated> 0 -o <truncated> -O <truncated> -o <truncated> -O philipma1957.A:1234 -o <truncated> -O <truncated> --api-allow W:127.0.0.1 --api-listen <truncated> -2 --real-quiet0%0%the above is from the processes tab and it shows I have -2 offset working

### Reply 3:
That's some nice additional information for everyone, thanks Phil.I only had one environment in which I made all the tests for the AvalonMiner.It seems that the power consumption number is much related to the ambient temperature value.

### Reply 4:
which is a twofold issueA) a few more dollars to run at 76f vs 67fB) a cap of how hot is safe?So I will next try an 86 f test which should be max safe power cap67f = 1366 watts76f = 1425 watts86f = ? wattsOnce I get a 86f test in.I will attempt to go to 90- 91 f which is over the recommended 86fI have ability to adjust and I have some areas where I can run under 86f at all times.If you do not have that ability at best you spend more power per unitAt worst you may kill unit.

### Reply 5:
Holy moly, these are some nice new info!

### Reply 6:
now I got the room hotter on purposetemps are35/81on guihash is 13583watts up to 1484room temp is 81f near intake<link> = 0.10935 watts a ghso67f = 1366 watts76f = 1425 watts81f = 1483 watts ----------- <link> = 1505 watts ----------- <link> 151787f= 1545 wattsnow this means in my case 5 months of warmer weather 117 watts x 24 hours = 2.8 kwatts a day or 28 cents x 150 = 42 dollars extra power if my mining room runs at 81fstill not up to 86f but watts go upwards as temps go upwards not sure why as fans are maxed at 100% and got to 100% when room was at 76f139 watts extra 67 f to 84 f179 watts extra 67f to 87fcheck out this last youtube see how quickly watt use drops once I cool off room your video will be live at: <link>Max room temp for this miner is 86f.latest video room was 87fwatts use does a big time drop with temp drops.

### Reply 7:
Well it is a good question. It would be an issue if you can not cool the gear. even the max temp allowed to run the gear 30c or 86f<link> in 1545 watts used vs 1366 at 67fSo 87f = 1545 wattsand 67f = 1366 wattsThis means I can not put 20 in my solar array which will go well into the 90's in the summer.But even if you run at 85f you are eating 150 to 180 extra watts.If I get 10 or 20 of these I need my buyers to know the heat limits.To be fair the spec page shows 30c as the max it also shows a +- 20 % range which we know know is dependent on heat in your mining room.Part of my job it to try to show what you would be getting into if I sold gear to you or if you buy from a builder.@ taserz the only gear I can run safely in the array in the summer :the old s-9 set to lower freqthe L3+ set to lower freqthe dragonmint T1 set to efficiency and with -ck's throttling feature when gear gets hot.the last youtube I did stunned me I dropped the room temp from 87f to 76f by opening my garage doors and watts dropped from 1545 to 1425 in well under 8 minutes as the room cooled.Today it is 48 f. I am going to test this again. Using a 2450 watt hp psu.

### Reply 8:
So I read the spec sheet and it say the gear can be as cold as 0cYou ran as cold as 67f which is 19.4 cYou di<rest of thread truncated>
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23003,"Date: 2019-07
Topic: No Hashrate after chainging miner hashrate setting.
### Original post:
Hi all. I have 3 s9i and all of them were working fine. yesterday i started to change hashrate setting on one of them. after i changed hashrate on miner configuration page my antminer stopped to work. i faced solid red LED. and below is my kernel log. today when i wanted to change its power supply with my another antminers , two another of my antminers stopped working like the first one. for the first antminer i tried to change the firmware, reboot , reset, downgrade firmware using sd flash card . but with no success. any body has similar problem?I'm on antpool.comI have nothing in miner status page. Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0,<rest of post truncated>

### Reply 1:
How did you change the hashrate settings? by changing the frequency? Because if you change the setting by the frequency you are in the right direction you can find this on the hidden menu on web gui. Base on your statement after you test the PSU and get the PSU from another working miner now both of them not running fine so it means your PSU might be damaged after you put it to the first miner which is overclocked? So maybe you overclock the miner too much and the PSU not giving enough power then died.Base on your kernel logs the ""get RT hashrate from Chain"" in all hashboard has no value means the hashboard is not running properly. Can you try to run it first for a while around 30 minutes to 1hr? if not working test this firmware <truncated> from bitmain and run it again around 1hr then let's check the miner status if the miner is hashing again. Don't forget to set the pool.Also, take a screenshot in mining status and post it here because it may help us to find the issue.

### Reply 2:
Thanks BitMaxz for your guidelines and fast reply. I am on latest s9i firmware .it have multi option. Read more about it here. <link> don't know why but 2 of my working s9i (two 14.5TH that stopped working when i turned them off for chaining their PSU with another s9i that didn't work. ) come back online after i changed my internet connection.(both of them are 14.5 TH with 1800 PSU)I tested another one (my 14TH s9i that stopped working yesterday) and it worked for 10 minutes but when i restarted it, it stopped again i got 0.000 Hashrate from it.both of my internet connections are stable and i can work with them using my laptop.

### Reply 3:
I will start with the good newsCode:Chain[J6] has 63 asicChain[J7] has 63 asicChain[J8] has 63 asicThe above means all 3 hash boards are still in perfect condition so you have not really toasted them yet.There are a few things you should have done before trying to alter the setting, you probably set it to +2.0 TH which usually does not work.Do the following.1- change back to (Normal)2- Use another pool/s , ditch antpool, use the following for testingFirst pool = slushpoolSecond pool = viabtcThird pool = ck poolReport back your results, a screenshot of the pool setting would help ( you can hide any sensitive info)

### Reply 4:
I don't know the reason. but i have no doubt that my internet connection is the problem.When i change my operator i get no hash rate.i tried another pools with no success.Here are my screenshots (with working internet provider)it is for s9i 14TH<link> 14.5TH<link>

### Reply 5:
Ok this explains something, are you using a static IP? If yes change it to DHCP.This is more than likely a DNS issue with the ISP (operator) , if you are using dhcp and still have the same issue i will tell you what to do next.

### Reply 6:
Antpool and BTC and slushpool are filtered in my operator.My miners worked with ckpool and kano pool.Thanks from all.I tested the connectivity using antpool connectivity tool.It showed me that BTC and bitcoin cash are filtered....I use static ip. And 8.8.8.8 for DNS.

### Reply 7:
Are you able to access those pools on your pc? If yes, i am sure using DHCP on your miner or copying the DNS from your PC network status will fix this problem, just because you can't access a certain website it does not mean it is blocked by your ISP.

### Reply 8:
Didn't heard this ""new multi-option firmware"" beforeAccording to the link you provide above The miner is having unstable issue. Like the quoted above, you need to lower the frequency (I don't have experience on 2019 firmware) if the 2019 firmware has new option to see the frequency settings try to drop the freque<rest of thread truncated>
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23090,"Date: 2019-10
Topic: Antminer R4 trouble
### Original post:
Hey! some days ago, one of my Antminer R4s halfway died, one board was hashing nicely, and the other wasnt available. All this was seen on pool-side stats.I tried rebooting the faulty one, without any good results. so i tried re-flashing the currently most up to date software for the Antminer R4 found on Bitmains support.this night i took it all apart, cleaning the hashboards and cleaning the controller aswell as the fan and entire case, all clean!still, no results. therefore im asking the community, which i know have several good people at finding errors in these Antminer-machines.i have a copy of the current Kernel-log, but i dont what to look for?Hope to get some help from you professionals! Link to the Kernel-log: <link> regards emilio932

### Reply 1:
1) Do you know which board went bad? Every R4 I have had issues with the top board went bad. Heat rises....who knew...2) A trick that sometimes worked for me was update to the latest firmware (2018-11-19) then go back to the 2017-04-28 firmware and if that did not work go back to the 2018-11-19 firmware. That has allowed me to revive some dead boards now and then. -Dave

### Reply 2:
The only reason that would happen is if they place the miner wrong. The R4 has only and only one valid position, exhaust air going UP. Any other position and you are damaging it.Of course, Bitmain was very negligent and even their pictures often show them wrongly placed. The R4 can only be used with the exhaust air pointing up like a chimney, with the scrolling fan lying flat precisely because of what you said.Incidentally this makes it very unsuitable for the typical mining farm arrangement.Lets do some ascii artwork: _Air exchaust_| ^^^^^^^^^^ ||_Hash boards__|[___Fan Intake___]Do NOT lie flat, do NOT have scrolling fan in vertical position, EVER.Check your wiring connections. Mine is with 2018 firmware and it works fine. As with the S9s, test each hashboard separately, swap power and data cables.

### Reply 3:
The problem is with the hash board connected to the control board connector J7.I have you tried these tricks? -->1. Try username RadekG's method for testing one hash board per time.2. Try to swap the data cable in to another connector in the control board.See if the problem is the same when using another connector.3. Try to reset the miner using the IP Report button reset method.<link> (see chapter 3 !)If your hash board still does not wake up, I think it is safe to say that it is a dead one.

### Reply 4:
All of mine are like that with no issues. The only ones I have problems with are the ones I got 2nd hand from people.As with all things YMMV.The biggest issue is the cheap ass bearings they have in the fan.-Dave

### Reply 5:
Yes you can simply unplug board J7 and the miner should run just fine, but don't give up on it without trying everything at your disposal.The gears i found from a chinese reseller in china of course, they have a group on telegram, pm me if you want the contact.

### Reply 6:
Nice ascii artwork, but I don't seem to understand how is it possible to position the miner this way, if the description in the image below is accuratesource: <link> found a few brand new R4s in China, they go for about 270$ each , I might get me 1 or 2 of them to set-up at home for the winter since they are really quite, so I get to use the free limited power at home to earn some extra BTC and keep the house warm, I never had any of those gears before and I am eager to test them, also I would like to know if they are really quite enough to sit in the next room.This is what to look <truncated> retry check chain[6]: asicNum = 63Chain 6 has 63 asics, so all <truncated> retry check chain[7]: asicNum = <truncated> set_reset_hashboard = <truncated> set_reset_hashboard = <truncated> set_reset_hashboard = 0x00000000chain 7 however is showing 0 , this does not mean all chips on J7 are dead, it usually mean 1 chip is dead and that is good enough to kill the board, a lose cable or any of the other reasons that have been already mentioned may cause this issue, so try to troubleshoot it , but be prepared for the worst and the most likely scenario which is a dead hash board.

### Reply 7:
Yes they are very quiet, i forced mine to 100% fan speed and it is in a living room and nobody cares about it, it is that quiet, like a gentle breeze or a typical household fan.The fan bearings probably last longer in the correct position. Your image shows the unit lying down, all you have to to is stand it up, but the scroll fan remains horizontal. I'll show you an image, unfortunately my internet is limited and searching for images is difficult for me at this moment.You could also imagine a toaster, with each hashboard being one bread. The controller ends vertical.Hoping that you can see the image, this is the only correct way to use the R4 (You can push the data ribbons to the side).Most images on the internet disturbingly show them lying <rest of thread truncated>
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22913,"Date: 2019-04
Topic: change user and pass miner whatsminer M3x
### Original post:
How change user and pass configuration of whatsminer M3x?I want to change user and pass (root) in whats miner M3x. but i can't find howplease guide me... thanks

### Reply 1:
not sure about M3, but usually the settings are the same, you go to system > logging> then "" router password"" .

### Reply 2:
No you can't change the user but you can change the password to your desire password. Image by HagssFINAs you can see you need to login to your miner through browser then the default password is root and user is root.To find this go to system properties you can find this from the top of the page then you will see the administrator password you can put any password you want.Read more about this miner from here (Review/Guide) WhatsMiner M3X 12.0 Th/s, 2100W Bitcoin (SHA-256) ASIC miner.

### Reply 3:
Thanks 33 of my miner has this tab and i changed the passwordBut 12 of them haven't this tab...(see attached pic)... it hasn't have administrator tab to change password...what i must do?!<link>

### Reply 4:
What do you mean? As the image you have a system why not, click it and you will find the ""administrator password"" under ""router password"". Or you mean is the system button is disabled and you can't even click?If that's the case you need to change the password through SSH but the problem I don't know which command you need to use. Can you try to reset the 12 m3x follow the reset procedure below. - Hold the reset button 3-5 seconds- Wait for Green and Red light flickering - Release the reset button and wait for 5 to 10 minutes to reboot.Source: <link> check your system properties again.

### Reply 5:
Try a different browser.

### Reply 6:
in tab system (for miners that have user and pass root) there are 3 sub-tab (system - administration- reboot) that can go to sub-tab administration and change password easily but (for miners that have user and pass admin) there is n't sub-tab administration and just exist <truncated> see attached pictures:<link>

","[
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11329,"Date: 2023-07
Topic: Bitmain S19 Pro - Dead Hashboards
### Original post:
Posting purely for informative reasons, however it appears that Bitmain are still churning out crap.I have just received a delivery of 12 x new S19 Pro (110T) from Bitmain, and within 2 hours of commissioning, I have 3 x dead hashboards (across 3 x miners) with 0 asics. They are clearly not giving a proper soak test. I realise of course they will exchange on warranty, but it's so much hassle as you have to return the complete unit (compared to Whatsminer for example, who will let you return a faulty hashboard on its own).

### Reply 1:
I think it is due to delivery sometimes they don't handle them with care.If you are far and shipping is expensive it would be better to repair it on your own.How about trying to do some basic things first like upgrading the firmware of your 3 units to the latest version?If it still doesn't work try to replug all cables of these 3 units and test it again.

### Reply 2:
The other part that is brutal is that Bitmain can take months to actually return the dead units after sending it in for warranty repair.They've kinda unknowingly changed the meaning of silicon lottery...

### Reply 3:
I am using vms they are in Long Island NY. IIRC you are in the general area of NY.<link> owner is named GREG if you contact him for repair tell him I sent you.

### Reply 4:
Speaking from very limited experience, the couple of S17 boards I've seen and repaired the solder quality was appalling. I expect the S19 are of similar quality. With a few thermal cycles and transportation vibration I'm hardly surprised that they end up failing.I think they must use OSP on their bare boards before reflow it leaves a nasty resedue if not reflowed properly, leading to weak solder joints. All the fixes I've done were achieved through reflow/resoldering of the suspect ASIC's, on the S17 the hardest part was removing the heatsinks without damaging anything else. I think the S19 uses a different heatsink strategy, so might be easier to rework.I don't think quality control for soldering is their expertise.

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23171,"Date: 2019-12
Topic: C5 control board Questions
### Original post:
I bought 5 used S9 miners, it turns out that 4 of them have the C5 board in them, out of those 4 (2 are 11.85TH/s models) can I just buy replacement xilinx control boards and put into all 4?Are hash boards all interchangeable or is each (S9, S9i, S9j, etc) take a certain type of board, I have seen them on E-bay and they sometimes list what model they came out of and sometimes do not?I am sure I had more questions I wanted to ask but can not remember them right this second and I am getting ready to go to a Christmas party so will ask them later.Thank YouMichael Grace

### Reply 1:
Not sure if this helps, but if you look at the bitmain site:<link> can see what parts are for what machine.-Dave

### Reply 2:
Depends on just *how* old those miners are. The C5 were used from the batch-1 up to maybe batch-5 or so. From batch-6 on up you should be able to use the newer xilynx boards. If the hash boards have the big power inductor on them by the PCIe plugs you should be good.It's the batch-1 through 5 that might not work because the early batches do not have the on-board Vcore regulator for the chips. Those early miners just directly used the PSU to power the chips. The later miners have the Vcore regulator on each board that allows you to set the voltage fed to the chips. The probable problem would be how the firmware handles no regulators.

### Reply 3:
I heard someone already did and replace the c5 control board with the T9 control board, not the t9+ it will not work. R4 control can be also alternative but the price are all the same from Bitmain shop.However, you can find someone on ebay who selling cheaper control board than Bitmain price. Look at this one <link> be aware of the shipping fee if the shipping fee is higher than the shipping cost from Bitmain better buy directly on Bitmain so calculate the cost of the shipping plus the price of the control board.

### Reply 4:
Hi, i'm pretty sur, the control board xilink is universal ! no problem for replace C5 ...on m'y experiance, i plug T9+ control board on my S9 without any problem !!! just need connector 18pin and firmware for S9 on T9+ control board !

### Reply 5:
C5 control board works on both s9 and s9i and c5 cotrol board is mostly used old firmware and you will never upgrade it to latest firmware. So I suggest you better to use any Xilinx control board as suggested above. It's compatible with any s9 series hashboard. They have also supported the latest s9 firmware available from bitmain download page and supported SD card flashing compared to the c5 control board.

### Reply 6:
Was the C5 only on the S9 or was it in the S9i 14 TH ?I see some used for sale for only $125.00 including shipping I think that is without a PSU, but I think I might get a few and just use the PSU from these slower ones.

### Reply 7:
Just so you know these hash boards are all of different sizes, so despite the fact that technically they may be interchangeable but physically they won't fit, s9i boards for example have larger heatsinks and you can't fit 3 of them in a normal s9.

### Reply 8:
I know that, having discovered it when 4 out of the 5 S9 I bought have the C5 in them, I am looking at buying a few more S9 and am trying to avoid the C5 ones, so why I am asking if the C5 came in the S9i.Also trying to determine if I can just buy some Xilinx control boards and put into these 4 that have C5 or if I am better off to part them out, (you answered this one it looks like), not sure if it will be worth it on the 2 11.85TH/s models though.

### Reply 9:
So you mean that if the c5 controllers came from s9i model units or s9? I think they are random there are some miner's receive s9i with c5 controller same on s9.However, there are some ways to know if the miner is a c5 control board or Xilinx. Take a look at this image below as your reference.Did you notice the difference of their ethernet socket?

### Reply 10:
I have seen that, but it does not help if I can not see the ones I will be ordering.The 2 11.85TH/s models look like the one on the right but are C5.

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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PSU"",
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]"
24079,"Date: 2023-01
Topic: T17+ 0 asic found
### Original post:
device 2 no hiveosCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 203416K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss,<rest of post truncated>

### Reply 1:
hello, I have 2 t17+ devices, it was working correctly for many years, but 2 weeks ago I got 0 asic found error, I solved this problem by cleaning my device (with cologne). but today I started getting the same error again, same error on my 2 devices. I cleaned it with cologne again today, but it didn't work, I used cellulosic thinner, it still didn't work, I tried a firmware update and it didn't work. I installed hive os and tried it and it didn't work. and there were some problems on my device where I installed hive os. When I click on the system icon, the hiveos screen comes up, but when I click on miner status, the original bitmain screen comes up. How can I solve these problems, thanks.tried hiveos device1Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat <rest of post truncated>

### Reply 2:
Likely hardware issue. Needs repair center fixing which is questionable financially.

### Reply 3:
The first logs shows that the 3rd hashboard is 0 ASIC there might be a connection issue between the control board and the 3rd hashboard. The 2nd logs the 1st hashboard is 0 ASIC and possibly a connection issue.Do you mind to try to replace the 3rd hashboard from your first device and take the working hashboard from your 2nd device and let see if the issue is just a connection or if it's hashboard issue then update here.

### Reply 4:
thank you so much @BitMaxz I will post the update here in 7-8 hours because it's 2 am in our country right now.

### Reply 5:
hi @BitMaxz I installed a working hasboard on the 1st device, which I removed from the 2nd device, it successfully read the asics, but I got a soc init error?I tried to reset it but it still didn't work and when the device was starting up, the green and red lights were not flashing when it should have been.Code:device 1 3 working hash boardBooting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <<rest of post truncated>

### Reply 6:
Now it's reading fine now all ASIC are alive it means that your hashboard has a problemAbout the soc init error it is due to incompatibility because replacing a hashboard always required a tool called Hashboard code editor/ EEPROM editor.All hashboard should match or should be the same like power, frequencies, and serial numbers. Since you don't have a Hashboard code editor I suggest burn a BraiinsOS and boot it into that miner to test if all hashboard is working fine. Braiins OS can bypass it even if they do have different EEPROM data.

### Reply 7:
Hi Bi<rest of thread truncated>
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    ""hardware_is_owned"": true,
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23071,"Date: 2019-09
Topic: antimier s9k Infected firmware
### Original post:
I punched in the address on the image an get 0 coins.<link>

### Reply 1:
This is the page for the control board flashing software.<link> instructions<link>

### Reply 2:
tnx for your reply<link> this link there is no related file for antminer s9k !!! which one is appropriate for me <link> have checked this link as well and i want to say that s9k is a little different from S9 series9k has different control board (model ctrl-c43) and have only one jumper on the boardany one can help me?

### Reply 3:
Yeah maybe.can you get it to go back to your pools after a re-set?Put in a long password.change fromrootrootto something like <truncated> in a second routermodem to ............ put in a long password to this routerrouter toswitch toyour old gearand 1 line touse a long password to with a firewallnew router to switch to bad gear which all have long passwords.the hacker may be accessing the gear via internet.finding the 4 units behind 2 firewalls with long passwords may stop him.

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    ""hardware_name"": ""router"",
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    ""hardware_name"": ""modem"",
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  },
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    ""hardware_name"": ""new router"",
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24145,"Date: 2023-07
Topic: How to find information about a miner's reliability
### Original post:
I don't have any luck finding reviews for miners, used or new, that have been made after some months or years of real world use experience.Dozen's of 'unboxing' videos and similarly useless stuff is easy to find for many miners, but that's not what I'm after.What's the best way to go about it?

### Reply 1:
Easy: Just look through the Mining Support and the Hardware areas of this Forum and come to your own conclusions. Lots of issues reported for all the different miners along with results of the people trying to get them resolved. Read about them and reach your <truncated> using published 'reviews' of any given miner's reliability is highly questionable due to the writers personal biases and/or lack of experience with the brands being ran in widely different environments..

### Reply 2:
This is a million-dollar question, if a miner is proven to be reliable it means it was out there for a long time and now it's probably not profitable to most people, so you either take the risk or wait until the gear is outdated, so that's generally speaking.In some special cases, like the 17 series, reports were coming out about how terrible those gears were just a few weeks after the first batch, it was easier to avoid those models than say the S9k which took a while to prove how low-quality it was.The second issue would be whatever reviews you find could be accurate ""then"" but not now, an example of that would be the Antminer S9, 2 years ago, those were still tanks, today, the failure rate on those S9s is pretty high, which suggests that the lifespan of those miners is coming to an end, and will require some series repair, I have said in this forum alone that S9s were tanks, based on my experience and many others that I know, when I said that back then, it was true, if you happen to read that review and not this one, then it's bad luck.Most information you can gather regarding gear reliability would come from your own experience, and friends or people you do mining business with<rest of post truncated>

### Reply 3:
Best to hang out in online mining communities and forums like this one. You can engage with experienced miners and ask for their opinions or recommendations based on their real-world mining experiences.You can also try social media groups on Reddit, Facebook, Telegram, etc. and manufacturer forums or support channels.

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23057,"Date: 2019-08
Topic: what is minimum voltage for m3x
### Original post:
a broken psu for m3xoutput is 12.8 voltcan i replace this with 2 *1000 watt psu of output 12 volt ??

### Reply 1:
No. I'm pretty sure all these built in PSU units need you to buy a replacement PSU, since it's not just 6pin connections.You could try asking in the review thread. <link>

### Reply 2:
Right the avalon 6 used an external or separate PSU. So any PSU providing 12V to 6-pin connectors would work.The M3x has an internal PSU that is ""hardwired"" in. So the best option here is to order a replacement from the distributor or find a used one that is operational.

### Reply 3:
there was a video on YouTube for an hp 1200watt server psu working fine on avalon minerhere it's<link>

### Reply 4:
oh thanx for the illustrationsothe replacement psu is not easy to find here in my countryso i need to find and new ideas to make this miner work again

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10810,"Date: 2019-04
Topic: GekkoScience is finally building a 16nm Pod Miner
### Original post:
It's looking good! Who's chips are in it? Bitfury's?

### Reply 1:
Job well done ! I do appreciate people taking effort to bring back mining at home.

### Reply 2:
This will look good next to my ltc Apollos.Coins are way up today this should be nice to add for summer mining in the garage.

### Reply 3:
Such low power consumption and high hash rate how about the future price Is it also required KFC verified when ordering and shipping this machine?Happy April fools day!

### Reply 4:
Price is TBD. I'll probably be doing more coordination with resellers regarding an MSRP and the like but those negotiations largely haven't happened yet.As far as I know, no KYC (or fried chicken) is required for buying from anyone I distribute to.I may open limited direct sales on these, depending on who I know that needs a job, but won't make any promises. For now the safe bet is to talk to your preferred reseller.

### Reply 5:
Who's chips are being utilized in this shiny new miner?

### Reply 6:
Some more details please on the new miner?

### Reply 7:
I want one.

### Reply 8:
The power light is orange. My primary PCB supplier doesn't have an orange soldermask option and arranging it would have been super expensive while also going mostly unseen.

### Reply 9:
It's beautiful. Do you recommend your USB hub for multiples?

### Reply 10:
You'll have to be more specific, because I have no idea in what case a USB splitter would be useful for this device.Ok, question edited for more clarity. Using my hub would be kind of a waste, because this guy draws almost exactly zero power from USB, but yes given the limitations of USB I believe you should be able to run at least 3 up to absolute maximum speed from a single source. (assuming ASICBoost is enabled, which is required to reach top speeds anyway)

### Reply 11:
Sorry my session timed out before I could edit. So any USB A hub can connect a few of these then?I'm an edit fiend today. Thoughts on <link>

### Reply 12:
Those Tripplite industrial hubs are very nice. We use them on our systems as they are built like a tank, near bullet-proof, have tighter than normal plug retention plus can be fed off of our 24vdc system buss.

### Reply 13:
A comment on USB.As implied by that these are built on NewPac tech, this board features Bitmain BM1387 (S9) ASICs. Bitmain chips don't have much of a work buffer, and when initialized each chip in the data chain is addressed in such a way that the nonce range is divided up somewhat evenly amongst them. If I understand correctly, the address basically becomes the upper-byte starting point for each chip to parse the 32-bit nonce range. Once that range has been exhausted, in order to prevent wasted work, a fresh pile of data needs to be sent in pretty quickly.USB2.0 can transfer enormous amounts of data rather quickly using bulk transfer packets. However, the number of packets of any size transferred per second is limited. Because Bitmain chips can't pre-buffer work, and because each chip gets a portion of the load (as opposed to say Innosilicon chips, which can buffer two unique work units per ASIC), fresh work has to be pushed in in fairly small increments rather quickly. This uses up a lot of really small packets, and maxes out the limits of the bus at around 800GH. I think this is the maximum hashrate one could achieve even with multiple devices on the same hub.When ASICBoost is e<rest of post truncated>

### Reply 14:
Why is it possible to by when you live in Europe?

### Reply 15:
Impossible? I though there were vendors in Germany. Otherwise, I'm sure there are plenty who can export to you.

### Reply 16:
<truncated> in Germany has done reselling for Gekkoscience hardware for a quite long time.

### Reply 17:
Right now it's impossible for anyone anywhere to buy this. The first batch I would like to keep US-only as much as possible, because we'll still be working out troubleshooting and tech support procedures and if something goes wrong I'd rather it went wrong with someone who spoke English and lived within ready mailing distance.

### Reply 18:
Good idea for a first batch. US/CAN/Mexico are zoned the same for most freighters.

### Reply 19:
Ready to buy one! Great job as usual Sidehack

### Reply 20:
I don't see any orange!

### Reply 21:
I have 20 NewPacs running @ 250 , they produce 1TB. So I guess you might be using 20 chips in the units?

### Reply 22:
This is so kick ass! Love your work man. I'm currently in the US on holiday and would love to purchase one when I get back. I live in Australia, any resellers looking to ship my way?

### Reply 23:
Once there's green light from Gekko to ship internationally absolutely. We can ship everywhere even if our shipping integration doesn't display for you, just have to ask. Though obviously the new pod is not available.

### Reply 24:
Thanks guys, totally understand about warranty support; my distance makes it har<rest of thread truncated>
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24107,"Date: 2023-03
Topic: One board of an old T9 not working
### Original post:
The 3rd hashboard has 0 ASIC according to the logs above.Have you tried to swap the cables from the known working to the 3rd hashboard? If not try it first.If the 3rd hashboard still didn't work then check this troubleshooting guide from zeusbtc below- <link>

### Reply 1:
The Antminer T9 has a total of 171 chips, which means every single hashboard has 57 of them (unlike the S9 which has 63 each), the 3rd board which should be most left when standing in front of the miner (you can check the label on the control board it will be labeled there, either as J8 or something that represents the last number like 1,2,3 it will be 3).Check if that board is connected, check both the data/ribbon cable and the power cable from the PSU, swap hash boards and see if the kernel log changes, if not, try to flash the control board with a different firmware, if all fails, it means one of the chips is dead and needs fixing, which isn't an easy thing to do.And by the way, please use the code tag next time to post your kernel log.

### Reply 2:
I did the code for you.10 th is about 75 cents a day with free power6.6 th is about 50 cents a day with free power.so if you fix the board and have free power you make 25 cents a day

### Reply 3:
Hi forum,I just got my hands on a T9 miner which has 2 boards workingI reseted and connected and unconnected everything but not working... anyone thinks it's worth giving it a try at repairing it? Thanks!!These are the logs:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: <rest of post truncated>

### Reply 4:
Thank you all very much! I'll start by swapping cables, and thanks for the link !

### Reply 5:
Yes... It's not worth it living in Spain... But it's a nice hobby

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  {
    ""hardware_name"": ""3rd hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""data/ribbon cable"",
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  },
  {
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23039,"Date: 2019-08
Topic: What is the difference between BM1387-BM1387B-BM1387BL?
### Original post:
Hello, I have been into learning how to repair missing chips and hashboard errors and I realised that there are 3 types of chips for Antminer S9 and It would be great if anyone can tell the difference since I really failed to find on the internet. My concern about that if I replace a chip in my S9 hashboard, would it make difference whether I use BM1387 or BM1387B ?

### Reply 1:
I can't also find the differences between BM1387 and BM1387B why don't you try to contact bitmain about this?Or I think much better to check the hashboard directly you must find the name under the chip if it is BM1387 with B or without. Then use it as your reference before you replace it.

### Reply 2:
I highly doubt Bitmain will answer such a question, but by looking on these chips sell on aliexpress almost all sellers label both BM1387-BM1387B as Antminer S9/T9/T9+ , so i doubt that there is any difference between the 2 , this however BM1387BL does not show up on the search engine on aliexpress.I think the best thing would be finding a seller with good reviews and ask them directly, it's safe to assume that those guys know more than bitmain support, look at all the problems we solve on the forum , non can be solved by bitmain support, it's either they don't know or they don't give a fuck.and by the way, in this topic you were trying to confirm if the readings on the log alone were accurate enough , what conclusion did you reach to?

### Reply 3:
How do you measure the chip if it is not connected to the fixture? It is not possible as I have observed from reading the manual i sent you, it seems like the tools constantly send signals to all chips and you measure the chip during that period, technically the chip that does not receive the nonce is bad, but measurement has to be done during that process, how did you manage to do it without the fixutre tool?

### Reply 4:
Oh I totally forgot about it. About the readings on Kernel I have to say it was accurate enough. On one board it was the exactly same number which was failing, on the other board it was the next chip. I found the failing chips by first checking Log(It says how many ASIC found) then measure the voltage values with multimeter around that chip.(Chips itself and -3 +3 other chips.) I managed to get one hashboard fixed correctly, the other one gave different error which I think I heated up a lot and made some other chip's solder paste contact loss.

### Reply 5:
I have contacted plenty of sellers and none of them has given a consistent reply. So far they mostly say BM1387 and BM1387B are compatible and BM1387BL is for Hydro model

### Reply 6:
I am not sure about the BM1387BL model but i am almost certain that both BM1387 and BM1387B are just the same, there are no resources on the internet but i did ask one of the chinese suppliers who I trust very much and he did confirm that both would work on S9.He also told me that these chips have different models , the code which is written on the chip itself is different, some of them can handle high frequency some can't , i asked him to confirm which one is best he said he will need to check on that subject, i will update as soon as he gets back to me.

### Reply 7:
Look at this video just found recently why looking for answer about BM1387B chips. <link> make sure to use the caption to english because it's rusian language. It seems the BM1387B is the last chip released last year just heard from some website. And I think BM1387 and BM1387B are both the same no differences but chinese people selling BM1387B because they have more stocks than BM1387.

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  {
    ""hardware_name"": ""BM1387"",
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  },
  {
    ""hardware_name"": ""BM1387B"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""BM1387BL"",
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10833,"Date: 2019-07
Topic: Antminer S9 SE
### Original post:
We have some on reserve, our listings are live.

### Reply 1:
judging from pics it looks like comes with PSU? no mention of it on the BM tech specs as yet

### Reply 2:
No psu, top is built like the Z11.

### Reply 3:
Looks like a new model s9 available. 16th about 1280W.<link>

### Reply 4:
waiting on price, they prob going to sell out extremely fastedit...ahh yes..see they have listed @$351ordered 2 via USD wire transfer...after order confirmation refreshed page and ""units sold out""

### Reply 5:
Does it use the same 12v PSUs? Are we supposed to pass all wires thru that small hole?

### Reply 6:
Appears so. Like the z11 as mentioned. Please double check as I don't see voltage or power rating on their site.

### Reply 7:
You'll have order from a reseller unless Bitmain releases another batch.

### Reply 8:
Just my speculation, but, next batch should be in next 2-3 weeks I assume for order right? I was going to buy used but the prices are ridiculous. (reseller prices too) Twice as much as buying direct! I assume they need to open another round of ordering in 2-3 weeks to have a September/October batch...

### Reply 9:
Go on bitmain every 30 minutes from 8pm to 8am New York time.Bookmark it and check over and over and over.

### Reply 10:
How would I get one of these miners in the next 2-3 months? I like to mine indoors for winter heat.

### Reply 11:
I was wondering about that - a year ago they still used to send me emails on new releases, I thought I unsubscribed - but perhaps they no longer do that? And their Twitter seems sparse, if this is even the right one:<link> there's really no way to know nowadays except manually monitoring the page?

### Reply 12:
with coin ready to pay quickly.

### Reply 13:
We'll usually reserve units on releases which will go quickly there's no time to list on site or announce so it seem quiet from bitmain quite often. They did though to an announcement for the first batch s9SE I believe. Other than that you have to be diligent.

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  },
  {
    ""hardware_name"": ""Z11"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""12v PSUs"",
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24159,"Date: 2023-08
Topic: Pool Luck, Proxies, and Mining Pools Overall
### Original post:
Hey y'all, relatively new here and I'm excited to dive deeper into the bitcoin world. I have Braiins OS+ and am looking to install their proxy service as well on my mine but I'm pretty confused as to how the proxy works. How do I know what server port my ASICs are connected to? I need to configure the proxy for multiple pools as I have some of my friends' machines here as well.

### Reply 1:
Are you talking about the farm proxy of the BraiinsOS?If I'm right according to them it is used to ""Reduce data loads, configure parallel usage of multiple pools, set backup pools, and more"".About setting it up better read their documentation about this you can read the documentation below on how to set up this proxy.- <link>

### Reply 2:
How many miners do you plan on connecting to the proxy? it could be just a waste of time and effort if the number is small.You can create as many servers on the proxy as you want, you can create1-Name - MyserverPort - 5555Pool - ViabtcWorker - Myworker2-Name - Friend1 Port - 6666Pool - ViabtcWorker - Friend1Worker3-Name - Friend2 Port - 7777Pool - BraiinWorker - <truncated> will create 3 local mining pools on your PC/ raspi or whateverThen on your miner:Pool URL : IP-Adderss of the PC the hosts the proxy + port number (5555)Worker: <truncated> your Friend1 minerPool URL : IP-Adderss of the PC the hosts the proxy + port number (6666)Worker: <truncated> worker on the miner itself will not reflect on the pool it would be just for you to watch on the proxy screen.Setting up a proxy is not so hard yet not so easy, so if you don't have a few dozen gears -- probably a waste of time.

### Reply 3:
You might want to check out stratu.ms proxy service. You can manage the proxy via a web front-end, I've found this is easier to use than the config files in Braiins farm proxy.To send hashrate to multiple pools in stratu.ms, you can create multiple proxy instances. You can also create sub-accounts to view / manage a specific proxy instance.

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    ""hardware_name"": ""PC"",
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  {
    ""hardware_name"": ""raspi"",
    ""hardware_is_owned"": false
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23247,"Date: 2020-04
Topic: Problem with innosillicon T2TH+ 37TH
### Original post:
Hi,One hashboard doesn't showing anymore in miner status. In this case, I found ""error 24"" that's mean some problem with hashboard.Here the log:Code:Feb 15 21:50:36 InnoMiner cgminer[999]: s_vin_sync_flag1:-1 <truncated> line:966Feb 15 21:50:36 InnoMiner cgminer[999]: s_vin_sync_flag1:-1 <truncated> line:933Feb 15 21:50:36 InnoMiner cgminer[999]: s_vin_sync_flag1:-2 <truncated> line:966Feb 15 21:50:36 InnoMiner cgminer[999]: s_vin_sync_flag1:-2 <truncated> line:933Feb 15 21:50:36 InnoMiner cgminer[999]: chain0: power downFeb 15 21:50:36 InnoMiner cgminer[999]: chain0 power downFeb 15 21:50:36 InnoMiner mcompat_lib[948]: <Message Queue> chain0: shutdown by cgminerFeb 15 21:50:37 InnoMiner cgminer[999]: chain1: power downFeb 15 21:50:37 InnoMiner cgminer[999]: chain1 power downFeb 15 21:50:37 InnoMiner mcompat_lib[948]: <Message Queue> chain1: shutdown by cgminerFeb 15 21:50:37 InnoMiner cgminer[999]: chain2: power downFeb 15 21:50:37 InnoMiner cgminer[999]: chain2 power downFeb 15 21:50:37 InnoMiner mcompat_lib[948]: <Message Queue> chain2: shutdown by cgminerFeb 15 21:50:38 InnoMiner cgminer[999]: chain0: sleep(3)Feb 15 21:50:39 InnoMiner cgminer[999]: chain1: sleep(3)Feb 15 21:50:<rest of post truncated>

### Reply 1:
those miners have a lot of speed settings.eco balance factory performanceand in between <truncated> are you set to?if you are on factory drop it to bal+play with the settings there are about 13-15 of them you may get one or more setting to make all 3 boards work.Today I drove from Howell, NJ to Clifton, NJ and back about 65 miles each way.I went to my farm and worked on gear. I left at 6am and drove on an empty highway speed limit is 65 miles an hour I drove 75-80My Kia Forte can do about 100 miles an hour on a slight down hill straight empty road. I know I did it once for about 2-3 minutes.Every time I get a new car I go to a spot where it is easy enough to get you car to max out.My kia forte is not safe at 100 miles an hour I can feel it lose some grip in the 95-100speed..So I do what it can on an empty road 78-82 feels pretty good it ia my second kia forte I have owen them for about 8 yearsI had a blow out on an empty highway at 75 and was able to safely spot the car.See where I am going here.Try to back your gear off a few notches it may not like the speed you are doing with it.I have 3 inno'st2t24 likes bal bal+ or Bal++t3t39 Like factory -t23t50 likes factory +

### Reply 2:
I've tried 3 or 4 modes... no one is working for chain 1. I was running on perf- yesterday and today, it was OK. Then one hash board disappeared.

### Reply 3:
Shut it off wait ten min do every mode <truncated> none work all three boardstry one other pool if no go board may be toast.what did you used to run it at?

### Reply 4:
I will try...Now I'm running back at perf-. It's ok with 2 hashboards, its showing and running good.I've tried on factory mod (I was running for a week on this mod) but no signal of chain1 now.Other modes the hashboard does not work. I've tested with only this hashboard connected, and the miner do not start mining. Just to remember, the others two works well.Code:Feb 16 15:20:08 InnoMiner cgminer[1301]: chain1: startup voltage 1640 (expect 1640)Feb 16 15:20:08 InnoMiner cgminer[1301]: chain1: RESET failedFeb 16 15:20:08 InnoMiner cgminer[1301]: chain1: power downFeb 16 15:20:08 InnoMiner mcompat_lib[944]: <Message Queue> chain1: shutdown by cgminerFeb 16 15:20:08 InnoMiner cgminer[1301]: chain1 power downFeb 16 15:20:10 InnoMiner cgminer[1301]: chain1: sleep(3)Feb 16 15:20:13 InnoMiner cgminer[1301]: chain1: power-on mode 1Feb 16 15:20:14 InnoMiner nginx[963]: 192.168.1.12 - - <truncated> +0000] ""POST /api/unit HTTP/1.1"" 200 41 ""<link> ""Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) <truncated> Safari/537.36""Feb 16 15:20:14 InnoMiner nginx[963]: 192.168.1.12 - - <truncated> +0000] ""POST /api/summary HTTP/1.1"" 200 28 ""<link> ""Mozilla/5.0 (Windows NT<rest of post truncated>

### Reply 5:
Yeah looks like a dead board. There are some repair guys that may help are you usa?this guy has fixed some t1 gear which was made by innosilicon. as a side note t1 t2 t3 all made by innosilicon<link> could pm him see what he says.

### Reply 6:
Can you try to flash the miner first you can find the firmware of this miner from innosilicon support below?- <link> might be a program issue since they didn't test it yet above you can try it first before you touch any hardware from your miner.And then update here if there different results on the log(So make sure to get a copy of your logs before and after firmware flashed.).

### Reply 7:
Hello,Did you fixed de problem? I have the same problem Help me

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23234,"Date: 2020-03
Topic: Please, Snow Panther Miner A1 but no hashrate
### Original post:
thank you for your information but i have a new question.i have bitfily A1 49th but i dont have any hashrate i dont know why? the PSU No is not active but all the fans and hashbord and mainboard is ON and working even i can see all the 6 hashbord on my status.also i send a pic of my status. <link> you help me?

### Reply 1:
It seems that you are mining on the ViaBTC pool. Did you try to check your pool setup? Check it if there are some extra space or character delete it or replace the pool server to any of this - <truncated> <truncated> the port(443) to 25 or 3333 if it still doesn't work. Then update here.

### Reply 2:
Hey Bro.thank you for your response, but i still have no hashrate.some pictures of my pool setting and dashboard and status are here:is any wrong here?<link> used <truncated> and <truncated> with :443 and without :443 in URL pool.also i used other port too (3333,25).i still dont know where is the problem. what can i do?

### Reply 3:
The pool URL and worker seem fine, assuming you do have a sub-account in Viabtc which is under the name ""sabetti"" if not then it won't work, also I think the default password is ""x"" and not ""1234"" for Viabtc unless stated otherwise by you.it's also safe to try a different pool, for example, cksolo pool with the following <truncated> Enter a bitcoin addresspassword: x

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23038,"Date: 2019-08
Topic: which s9i firmware is best?
### Original post:
pretty simple question.The original firmware did 14000 gh at 1475 wattsI put in the Nov 7 firmware it does 14006 gh at 1257 watts a watt savings of 218 watts since I will be setting up a lot of them it is a nice <truncated> <truncated> ..... I am using this <truncated> ........ so how does this one do?Note to load the nov 7 version I had to load this belowAntminer S9i - Package to Fix Upgrade <truncated> info came from below.<link> a different notehas anyone flashed s9j to s9i and improved efficiency ?and lastly I have a really nice s9i 1260 watts fans at 3200 and temps at 77I have an okay s9i 1295 watts fans at 3650 and temps at 77seems that I got lucky on one of them

### Reply 1:
Phil,I just installed a few switching PDUs at my data center and here are numbers from the wall that I have on some of my S9i-14.0 miners. All are running 20181107 firmware. I may install some other firmware on the miners when I have time to monitor them. Temps are around 62-67. Firmware has been rock solid and I did not have to install the upgrade failure firmware first. I believe I have a total of 55 S9i-14.0 miners running this firmware so this is just a sampling from 1 cabinet.Average Real Time Real Time Power W/tH14.010 13.955 1207 W 86.514.126 14.124 1210 W 85.714.226 14.279 1195 W 83.713.988 13.985 1190 W 85.113.996 13.927 1162 W 83.4

### Reply 2:
My s9 13.5th/s auto freq is running the Nov 2 update at 1130-1230w pending fan speed. I set to a static fan % though cause it likes to wind up and down considerably and annoyingly.I'll update about he 14th unit I have in a couple days.

### Reply 3:
These are the best numbers I have ever seen if indeed these are the numbers at the wall. I have metered 240v, but only in amps. I can therefore only calculate approximate wattage but not near exact. I just got a bunch of 13.5 and 14TH S9s in. I was really thinking that the 3rd party software with the new ASIC boost enabled was going to be my best option, but this 20181107 firmware result is the best I have ever seen posted I think by at least 5%.

### Reply 4:
I was able to get a 14th s9i down to 1150-1160w as well. S9 is pretty viable still with cheap power, just wish I had some. My fiat reserve is about up and I'll have to shutdown unless a market rise to supplement, which I don't expect soon. I'm about $0.115 power and very happy I've lasted this long as very small miner though 2018 to now. I'd say I'm proud but wish I'm able to endure while I have cool of winter here.

### Reply 5:
If you get cheap s9i and use braiins os. You can go to 815 watts and 10040gh.About 80 watts a th.You must use asic pools.But 80 watts is really good.You would need more psus and more room to squeeze out that extra three watts.

### Reply 6:
Can you follow up further?If I'm reading bitmains details the 20181130 firmware correctly, hash rate and power efficiency are both lowered.I'm getting the same numbers as you posted from the 20181107 firmware +/- depending on fan speed/ambient temps. I'm looking atwhich direction to go when season changes next: flash bitmains firmware when needed or try braiins.If braiins is better all around, Have you done one of your video's on braiins?

### Reply 7:
You should wait a little bit, by the end of the month the next Braiins OS version will come out, and i think they are implementing an ""easier method to go back to Bitmain's firmware"" which probably involves the Braiins OS web ui, because if you do install Braiins OS right now using their python script (not the Web UI) it is VERY EASY to go back to the original firmware as that script makes a backup first, while the current web ui method doesn't.Though he hasn't posted any videos, he has posted lots of results, GOOD results. I never expected those S9 to become this efficient AND stable. I see little reason to mess with any other firmware at this point... (And i happen to know results from another person that used it in hundreds of units...).

### Reply 8:
Any news? I was wondering what is the best firmware for my s9j miner.. I want a firmware that I can set frequency per chip and even underclock in some senarios. can you help me with that?

### Reply 9:
BraiinsOS allows you full control over your asics frequencies and voltages, fans can be set at fixed speeds or ignored and sensors can be disabled/ignored. This allows the greatest flexibility, and with care you can find the best efficiency per hash board, but you can also harm the miner if you go reckless with the voltage and speed settings.No, these settings cannot be changed per chip, only per board. This is probably a hardware limitation.As always, at a given fixed speed lower the voltage until you see the actual/current hash rates differ too much then go back up a notch on that voltage. If you change the speed, do this again, remember this has to be done per board, as every board is different.

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24176,"Date: 2023-10
Topic: S17Pro hashboard - no power
### Original post:
Hi!I am repairing a s17pro hashboard. On domain 4 I dont have power, 0.8v but not 1.8v. Were to continue the diagnostic to find the problem?Thanks in advance!

### Reply 1:
What domain 4 are you talking about is that the voltage domain? But what exactly?There are 5 testpoints on the hashboard if you want to diagnose the issue there is a manual repair guide from Zeusbtc you can maybe get some idea of how to fix them check the link below.- <link>

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13650,"Date: 2020-05
Topic: Litle tweak for monitoring overclock/underclock T17 / S17
### Original post:
Sweet.While I have very few remaining Bitmain miners (most are Avalons), this is a perfect example of how the Antminer firmware hacks SHOULD be done: Do the hacks by distributing open source patch files! Pretty sure that the same can be done for setting Vcore, freq, fans, etc. Ya know - all the things that the closed source firmware hacks do.This way the original cgminer/BMminer code is not distributed so there is no further violation of the cgminer GPL license beyond BM's violation of it..

### Reply 1:
Hi all, i have make (take on mp test firmware) litle tweak for monitoring value, and i have modified this for more compatibility and english ... this is util for validate your value (Voltage and Freq tuning)You just need past this code on your miner at <truncated> and replace this. (Need SSH unlocked). <link> : Monitoring in progressExemple : if you need more voltage !Exemple : Test passed, your freq and voltage is ok This mod monitoring HW number, Fan speed, GH speed according to freq ... if is one is not on tolerence, showing error I thinks this mod is not bad for good tweak T17 ... i don't have tested on S17 but i thinks is working to ! (idealGH = frequency * 675 * asic_count * miner_count * 0.98 / 1000;)With pleasure

### Reply 2:
Hi , thanks with pleasure I have updated the code, i find litle ""bug"" if fan is under 4000tr showing error, is not an error if you run in cold temp, i have set this at lower fan speed (1600tr)i have change visual for better cleary and i have optimised the calcul of hashrate, original is not ""best"" true .

","[
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    ""hardware_name"": ""Bitmain miners"",
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    ""hardware_name"": ""Avalons"",
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    ""hardware_name"": ""Antminer"",
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    ""hardware_name"": ""T17"",
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    ""hardware_name"": ""S17"",
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23070,"Date: 2019-09
Topic: Setting up a mining farm
### Original post:
In the future I hope to set up a mining farm. Will I need to set 1000 s17s one by one to my bitcoin address? Its been years since I tried mining and I was very young. What all will I need to do computer wise? Also, to restate my previous thread I remembered the proper wording, how do people mount the antminer hash boards for immersion cooling? I dont want those suckers touching each other!

### Reply 1:
Yes. Thank Bitmain for locking them out of SSH access.Computer wise nothing, you don't need a computer, except for setting them via web ui in the local network. They should go thru some sort of router/firewall like most normal LAN setups.Forget immersion cooling, not worth it.

","[
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  },
  {
    ""hardware_name"": ""antminer hash boards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""router/firewall"",
    ""hardware_is_owned"": false
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16507,"Date: 2023-05
Topic: 10 best recommended Bitcoin miners.
### Original post:
I consider this 10 Bitcoin miners as best with their hashrates, temperature, price, power and so on. They include the following1. AntMiner S19 Pro - best for industrial miningHashrate: 110 Th/sPower consumption: 3250 w (+5%)Noise level: 75dbTemperature: 5-40CWeight: 15,500 gPrice; $2,8602.AntMiner T9t - best for experimentation, testing mining, setting and operationsHashrate: 10.5Th/sPower consumption: 1432 WNoise level: 76dbTemperature range: 0 40 CWeight: 4,200gPrice: $4303. AvalonMiner A1166 Pro- Best for experience Bitcoin and SHA-256 minersHashrate: 81TH/sPower consumption: 3400 wattsNoise level: 75dbTemperature range: -5 35 C.Weight: 12800gPrice: $1,5504. AvalonMiner 1246Hashrate: 90Th/sPower consumption: 3420 watts+/- 10%Noise level: 75dbTemperature range: 5 30 CWeight: 12,800 gPrice: $3,8905. Whatsminer M30stt - experience and SHA 256Hashrate: 112TH/s5%Power consumption: 3472 watts+/- 10%Noise level: 75dbTemperature range: 5 40 CWeight: 12,800 gPrice: $3,9996.WhatsMinet M32-62THashrate: 62TH/s +/- 5Power consumption: 3536W10%Noise level: 75dbTemperature range: 5 35 CWeight: 10,500 gPrice: $1,1007.Bitmain AntMiner S5- best for beginnersHashrate: 1.155Th/sPower consumption: 5<rest of post truncated>

### Reply 1:
Is this your best list? Why Antminer s5 and Dragonmint are listed here?They are no longer profitable and have less support.And another thing is s5 miner is power-hungry compared to the Compact F/USB ASIC-based miner that can pull only 15-30w or Futurebit Apollo which can mine 2.5th/s with 160 watts power consumption.

### Reply 2:
LOL, this must be a terrible bot posting this shit, ALL prices above are wrong, some gears are 7-8 years old and no where to be found nor are profitable at any power rate, many models are wrongly spelled and/or do not exist, what is the purpose of posting this b.s?

### Reply 3:
He just copied the post from the site and didn't even bother to cross-check if the prices are correct or not. And also placed the link at the bottom to avoid been penalized for plagiarism. Op is obviously looking for merits.

### Reply 4:
You can consider to share the website link, to share us your ""best""!

### Reply 5:
completely meaningless list, among many now intuli not even the S9 appears that at least some of them are still in operation.

### Reply 6:
Give me 2 S5 please

### Reply 7:
I dont even understand some of these comments what does best to experience Sha256 even mean. What could be good would be a list that tells you how reliable and profitable a miner is and not this random list of random hardware. Anyway it does really seem like this is a bit or it was just copied from a website.

### Reply 8:
I love Antminer S19 and it's my favorite Miner because it's super powerful and also it's able to mine good amount of crypto. By the way I like to make Masternode Instead of mining. As Masternodes work on a Proof of work system.

### Reply 9:
And what coins do you mine? Masternodes work on the Proof-of-Service protocol and there is nothing similar to mining in the work of masternodes. If you are the owner of a masternode, then you are required to have the required number of coins and provide service to this node.

### Reply 10:
Thank you for recommending the Avalon Miners. I'm from Canaan Official. Avalon Miners in Texas are on sale. A1246 are $7-$7.5/T rn. You can check on <link> or contact me at <link> for inquiries.Happy mining everyone

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    ""hardware_name"": ""AntMiner T9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AvalonMiner A1166 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""AvalonMiner 1246"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer M30s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""WhatsMiner M32-62T"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain AntMiner S5"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compact F/USB ASIC-based miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Futurebit Apollo"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Dragonmint"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19"",
    ""hardware_is_owned"": true
  }
]"
24097,"Date: 2023-03
Topic: Avalon 1166 went Idle after Aging
### Original post:
Hello, i had my miner work unstable so i was recommended to do Aging via FMS Software. So i did it and after it popped up that Aging was sucssesful my miner status went to Idle and now it's not working. Has anyone had similar issues ? Any recommendations how to fix this ?Thanks

### Reply 1:
Can you still access the miner's IP through the browser?If you can still access it would you mind copying the API logs and pasting them here make sure to put all logs inside the ""insert code tag"" it's # button while editing your post here or use pastebin.com and share the link here so that we can review the logs if what happens to your miner?Or try this command re-aging with the parameter below do step by step from stop aging and then set parameter then reboot. Code:Stop aging: <truncated> <truncated> parameter: <truncated> <truncated> <truncated> <truncated>

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]"
23312,"Date: 2020-08
Topic: i need your help
### Original post:
How is that a problem? it's only common sense that every miner comes with a PSU that can deliver more power than the miner needs.There is no ""power switch"" in these PSUs.This is regular PC PSU, has nothing to do with M3's PSU.OP, what is the voltage on the socket? how many of them do you have? do they all have the same issue? does any light come on? fans spin? please provide all this information in detail so we can help you.

### Reply 1:
What do you mean about this bolded part? Do you mean that if you plug the power supply to the miner it won't turn on or if you plug the power supply to the power source it doesn't turn on?If the problem is the PSU is not turning on when plug into the miner your problem is under your miner possible some shorted parts. If you have a multitester better check the PSU voltage to check if the PSU is giving enough power or not. If the PSU is giving normal voltage it means your miner is shorted. Use multitester to check the terminal if it short.Update here if the miner has some short parts we can try to find which part is shorted.

### Reply 2:
i have some whatsminer m3 machines with psu 2200 watt . the psu not turning on when i connect the cable power no action ... What Can i doPlease Help Me .... And Many Thanks.

### Reply 3:
with ""psu"" you mean girldfriend/wife? jk You need give more information, what say the voltimetre about the voltage on the wall, something happen before the equipment stop working? (overvoltage, undervoltage, etc).

### Reply 4:
Do you have a working m3?If you have a working m3 I can help you troubleshoot it.Do you mind telling me if you live in the usa or another country.I can give some links if we find the psu is dead.A working m3 would really help if you have one.Please let us know if you do.

","[
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    ""hardware_name"": ""PSU"",
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  },
  {
    ""hardware_name"": ""regular PC PSU"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M3's PSU"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""multitester"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""whatsminer m3 machines"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""psu 2200 watt"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""working m3"",
    ""hardware_is_owned"": false
  }
]"
23207,"Date: 2020-02
Topic: Avalon 8 frequency manually adjust problem
### Original post:
Hi, I've tried to use --avalon8-freq command with no success.I want to tune my avalon 851 and 852 for running between low-power and balance mode.My target is to run at 11.5Th/s / 1200W / fairly quiet @ 4200RPM / >= 95C chip tempI've try both --avalon8-freq 625 and --avalon8-freq 600-650The miner not hashing at all.Thanks.

### Reply 1:
I was never able to adjust the 851 or 852 miners with any good success. In fact the last really good avalon for adjusting were my 841's.Good luck trying with yours. Maybe you can succeed.

### Reply 2:
Syntax error, take a look at the documentation for the driver and what the command you are inputting are.

### Reply 3:
Code:--avalon8-freq Set Avalon8 default frequency, range:[25, 1200], step: 25, example: <truncated> <arg> Set Avalon8 default frequency select, range:[0, 3], step: 1, example: 3 (default: 3)Code:char <truncated> *arg){ int <truncated> char *colon, *data; int i; if (!(*arg)) return NULL; data = arg; memset(val, 0, sizeof(val)); for (i = 0; i < <truncated> i++) { colon = strchr(data, ':'); if (colon) *(colon++) = '\0'; else { /* last value */ if (*data) { val[i] = atoi(data); if (val[i] > <truncated> return ""Invalid value passed to avalon8-freq""; } break; } if (*data) { val[i] = atoi(data); if (val[i] > <truncated> return ""Invalid value passed to avalon8-freq""; } data = colon; } for (i = 0; i < <truncated> i++) opt_avalon8_freq[i] = val[i]; return NULL;}I'm so confused, can you give me some clue? Thank you.

","[
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  },
  {
    ""hardware_name"": ""avalon 852"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""avalon 841"",
    ""hardware_is_owned"": true
  }
]"
23179,"Date: 2020-01
Topic: My hash rate will not reach 19.5
### Original post:
Hi guys i have got 300 s11 and among this 300 , around 10 pes are not hashing 19.5 , my nires are s11 10.5 Th the supprised thing is that when i remove them from my farm and bring them out and connect them , alone they are hashing 19.5 dose anyone know what is the problem

### Reply 1:
Check those miners in the browser/WebGUI then go to miner's status and make a screenshot host it in imgur.com then post the link here. Then check the kernel logs and post it here make sure to use ""insert code"" before you post it here.What I think is the 10 miners are not getting enough power from the wall try to separate them and put them on different wall socket.

### Reply 2:
Let me guess, the 10 miners show 19.5th on the miner GUI/Webpage but show 10.5th on the pool right? if that is the case then it's internet/network related issue, you do not have enough bandwidth to handle the traffic of a 300 miners, a simple way to test this would be as follows.assuming you label your miners from 1 to 300 , and lets say these 10 miners (391,392......300) show 10.5th on the pool, what you should do is turn of other 10 miners for example (1,2.....10), you will see that the first group (391,392......300) will start hashing at 19.5th in just a few mins, if you turn on (1,2.....10) after a while, they problem will move to them and the (391,392......300) group will work just fine.I highly doubt BitMaxz's guess because electricity does not function on first come first served basis, if you are putting more load than your infrastructure can handle the AC voltage will drop that's for sure, but it will drop along all sockets, thus making everything that runs in the same farm face the same issue and not just 10 miners.

### Reply 3:
That's an interesting theory phill, it is technically possible, but practically not! I can not think of any reason as to why a mining pool would reject an x number of workers under the same account,also assuming this theory is valid, how does this explain a lower hashrate on the pool side?if the worker details are refused by the pool, it will show a dead or an inactive miner, not a miner with half the hashrate . I don't really like betting, but if I had to, i am willing to bet on a network/internet issue and nothing to do with the pool, it's anything from a low bandwidth to a router/switch that can't handle all 300 hosts.

### Reply 4:
try using a different pool for 20 miners. use viabtcif you use viabtc try pointing 20 miners to bch coinor open a second account with via btc and run 20 miners at btc.on the twenty test miners make sure they include the 10 slow ones.if this works the pool may not want 300 + miners pointed on the same account to the same coin.it would be bandwidth issue that you looped around via a second account.

### Reply 5:
I tend to think you are correct.but my test can still alleviate bandwidth issue if the limit is 300 miners out bound from his place. then throttled.the limit may be 300 miner max to 1 address with 1 label.if he does 290 to 1 address with 1 labeland 20 to 1 address with 1 label it could work.this can do 9 + 9 + 9 + 9 = 36 s9'sfull size<link> if you do 10 + 9 + 9 + 9 the one with 10 will have rotating dropouts.kano.is had a 9 s9 limit.I think ckpool did at one time.I get at 300 he may have a large proxybut if he is up to 320 minerstwo 160 proxies could work around his issue.he kind of mentions a work around of moving the 10 miner but I do not know were to?Also what is his switch equipment?what is his router?We have 2 routers with 2 servicesSo we can configure easy peasy 230 units per router.we like cisco 48 port gigabyte speed switches we get then surplus refurbished cheap.I grabbed 10 of them they work well.

### Reply 6:
If you know of a well put together proxy guide please post it here,that will most likely fix his issue.If i understood correctly, he moved them to another place with a different network, the 10 miners had all the bandwidth they needed and that's why they hashed at full speed.

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  },
  {
    ""hardware_name"": ""router/switch"",
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  },
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    ""hardware_name"": ""cisco 48 port gigabyte speed switches"",
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10819,"Date: 2019-05
Topic: Current List of Competitive Hardware - April 2019
### Original post:
So some big changes. Bitmain has reclaimed the top spot in efficiency, with the S17. I used their normal numbers for the S17 Pro as advertised. Halong has been removed from the main list and moved to the bottom as they areno longer operational. Bitfily, Bitfury and Ebang are now in a previously competitive category until they release new hardware.

### Reply 1:
Is the Canaan efficiency FW spec updated from the newest release?

### Reply 2:
That would be the stock as advertised specs I believe. I did notice some chat about the firmware. I'll read up on it tonight and figure out how to work it in. Most likely it will be an * about the FW and it's efficiency gains. Good catch.

### Reply 3:
Anything available under, say, 500W?

### Reply 4:
The Gekkoscience pods and sticks are designed for hobby/home use.Also, AvalonMiners can be configured for a low power use, the 8 series with the lp firmware is a great combination.I have a A841 mining at 8Ths hash rate with about a 700W power consumption.

### Reply 5:
thanks found it after the fact also.

### Reply 6:
Actually the GekkoScience R606 is here on the forum, not some off site sales web page: <link>

### Reply 7:
Micro BT is announcing 4 Whatsminers Sunday the 19th, M20, M20S, M21 and M21S.May want to watch for that for competitive hardware, I posted their announcement but was promptly deleted for unknown reasons.

### Reply 8:
er catch is the 'supposed' out the door is 1st week in August 2019 and the prices suck for that far in the future IMHO.here is the link.judge for yourself.<link> I AM ASSUMING THE LINK ABOVE IS THE LEGIT SITE. SO BEWARE. DO YOUR RESEARCH.

### Reply 9:
Pricing is fine imo, as nothing else is/will competing with the M20 but yes too long of lead time.

### Reply 10:
That is one distributor, the other is Pangolinminer. I've used Pango many times for purchasing the M10's. Very good company but ja that long of a lead time for the whatsminers sux big time.

### Reply 11:
ditto....in my area ... I can get the elec utility (Xcel) to pay same for elec as I pay for (12 winter and 13c summer...more or less).the CATCH is, however, they go by your LAST YEARS electric use and will only buy back at that rate...so if it was $100 w/o, miners and you have the capacity to do $400 a month with miners....sure you can do it for 6 months but then they adust downward..if you miss that goal but never back upwards..once the miners go off (FML).So, I can't use the 'extra' capacity of what I use for miners (not selling back to Xcel) when they go defunct... because even with say a year lag between decent equipment..in 6 months they will adjust downward.So hell, that sucked.So back to the equipment side of this post, before it gets deleted for off-topic (where I'm going with this) as a 'equip hedge"" (with no real decent equipment miner wise in the next year) a person could use some BTC on a price pump as a hedge against it going down and get a solar setup (my case 9KW is 20k after rebates supposedly)BUT you'd have to have some miner equipment in place, with a year of electrick use, to justify to Xcel your use of electric at that rate (frigging chicken and egg miner parado<rest of post truncated>

### Reply 12:
I'll add them to the list the same as the other gear once it's confirmed in the wild. I'm expecting what I believe will be branded an M20S ordered as a demo, within the next 2 weeks - maybe. The lead time was about 6 weeks at time of ordering, but may stretch a bit, I've never gone longer than that and couldn't imagine how hard the waiting game would be. They are however one of the few units that don't come with a hard 240 V cap.Searing - Yeah I've been fortunate to live in an area that leaves me very well positioned for mining. It's tough for some out there, keep looking for opportunities, if your Winters are cold you may want to consider becoming a seasonal miner, only. I see this as a likely end result for a lot of home miners down the road.

### Reply 13:
I think Bitfily is down for the count, last I tried to buy from them by the time the wire transfer cleared they were out of any and all miners, used A1, B1 et all, they actually went out and found me used M3's to try and make up, their page is down also. I will confirm in a few days when I contact a sales person I know.

### Reply 14:
I'm sorry to hear that, Zimba. It is a very weird situation. Their chinese website it is still online.The company I work at, recently (about 7 weeks ago) have completed a huge buy of 500 or more B1+ asic units. The last new I have hearded was the shipment was sent on time and will arrive in only some days (maritime transport). I will keep you informed about that.

### Reply 15:
From my sales person at Bitfily, ""They are not making any new miners"". so RIP Bitfily and hope I don't break another PSU.

### Reply 16:
Thanks for the update, they've joined Halong and been moved to the final stop<rest of thread truncated>
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    ""hardware_name"": ""S17 Pro"",
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    ""hardware_name"": ""Gekkoscience pods and sticks"",
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    ""hardware_name"": ""AvalonMiners"",
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    ""hardware_name"": ""A841"",
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  {
    ""hardware_name"": ""GekkoScience R606"",
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  {
    ""hardware_name"": ""Whatsminers M20"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers M20S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers M21"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminers M21S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M10"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""M20S"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""A1"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""B1"",
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    ""hardware_name"": ""M3"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""B1+ asic units"",
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]"
16475,"Date: 2023-04
Topic: Bitcoin mining difficulty rises 7.6% to set new all-time high as hashrate jumps
### Original post:
Hi everyone! Bitcoins mining difficulty level rose 7.56% on Friday, hitting an all-time high along with the networks hashrate, showing miners are applying more computing power. The difficulty changes roughly every two weeks, and is a measure of how much computing power is required for mining bitcoin blocks to be rewarded with Bitcoins. <link> has their own opinion about this.""

### Reply 1:
And they discuss those opinions here already:<link>

### Reply 2:
All of which ^^ have nothing to do with this thread you started.That reply reads a lot like what a chatbot spews out so Ignore button activated.

### Reply 3:
That and the fact that aside from the occasional and short-lived drops, diff has been steadily rising and ergo 'hitting new all time highs' roughly every 2 weeks since Bitcoin's inception... Hardly newsworthy in itself.

### Reply 4:
You're right, his answer has nothing to do with the original thread, and you're right on the second point too, he probably used an AI for his text :It could be so great that actions can be taken against members using GPT or other AIs, but what could we do ?

### Reply 5:
Learn to recognize the 'style' of AI posts - it is not hard to do as most are a straightforward collection of facts information that are strung together with little to no 'human feel' or thought/opinions to the wording. Most read like a heavily edited textbook vs a spur of the moment collection of thoughts being typed by a person.Then as I did, Ignore the poster so they stop getting views much less merits for their lazy-ass crap.

### Reply 6:
This is direct plagiarism. And in my opinion this should also be an offense that can lead to a permanent ban. Haven't we had cases where members have been banned so far for using AI generated texts?It sucks discussing with such lazy people to be honest.

### Reply 7:
yeah there are a few threads under bot attack as well. makes it a bit of a drag to see if something is worth reading.On topic I added 2 s19 j pros this week and I have 2 whatsminer m50 units due on Tuesday.this will push us to 2.0ph + .770 ph = 2.77 phSo I am contributing to the 7% uptick.We are nearing limits unless we buy a container.

### Reply 8:
Aren't containers a hell regarding airflow ?

### Reply 9:
Worse they can be completely wrong also but then people believe the crap they spit out ...Like about me and my pool having anything to do with altcoins ... ... ...Reminder that the 'I' in AI used by everyone is completely misleading.

### Reply 10:
Bitcoin's price as represented by its market capitalization and exchange rate has generally trended upwards since its inception in 2009with occasional drops and corrections along the way. This is due to a variety of factors, including increasing adoption and awareness of Bitcoin and cryptocurrencies as a legitimate asset class limited supplyand demand from investors and traders.Howeve it is important to note that past performance is not necessarily indicative of future results, and the price of Bitcoin and other cryptocurrencies can be highly volatile and subject to sudden changes in sentiment and market conditions. Therefore, it is important for investors to exercise caution and do their own research before making any investment decisions..

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16450,"Date: 2023-03
Topic: Bitcoin mining at home
### Original post:
Interested in mining bitcoin at home, I know that isnt profitable like some years ago, but its an experience that I would like to live during my bitcoin journey.Whats the process to mining bitcoin? Do I need an ASICs? Can I do it just with my computer? How this works, I need to go to some specific website to generate bitcoins?I'm new in bitcoin mining, so if someone can explain it to me or send me some tutorial will be great, because I have a lot of doubts and questions.

### Reply 1:
yeah a lot depends on your appetite to spend .you could buy a few bitmain s-19 xp units at 6k eachand you could buy a immersion cooler for 2 k. your cost would be over 15kbut it would be quiet and not need much maintenance .This would need 210-240 volts and about 60 amps to run.I would say it would be as much as a home miner would ever spend on mining.or buy an apollo as linked above. well under 1k

### Reply 2:
Why not buy the s19/pro-Hydro version instead? It's way more cheaper than buying s19 XP and immersion cooling.The only downside is that they will release the s19 hyd this December, and the pro version is next year in January.

### Reply 3:
I dont want to spend a lot of money, something until 1k will be enough for me. However, I will think about it.Can someone send me a tutorial (if there is any available) about a cheap mining equipment and how to set up the equipment?

### Reply 4:
You can use the rather detailed and up-to-date instructions described in the following video, I think after that you will have more understanding in the matter of mining and many questions will disappear. <link>

### Reply 5:
If your purpose is for studying bitcoin mining and you don't want to spend much then go for Compact F USB miner the price of this miner I think is around 100-150$ in Amazon it's pretty cheap and you can find the guide below.- <link>

### Reply 6:
ASICs are needed. Otherwise you are not mining. You are just playing some games, which would be completly legit. You could mine with your CPU just to experiment.If you don't have access to cheap/free electricity and intend to run a little mining farm, just don't mine. Unfortunately circumstances would be not good for you. You would be burning more and more money every day and you will very unlikely help <truncated> speaking, If you have the resources and access to brand new machines, then mining is always profitable. If mining is not profitable -> miners turn down machines -> difficulty go down -> mining is profitable again.However, as you can see, bitcoin hashrate is hitting new highs every day. Profitability today is reaching new and new lows every day. This is due to technological dissemination. Every day better machines are created. This is never ever stopping, which leads to small mining operations failing.If you live in a cold country, you could use bitcoin miners to heat your house. This way you'd be yield positive regardless of the hashrate evolution.

### Reply 7:
As mentioned by everyone else here, go for something cheap like a USB miner or a second hand miner and run it and see if it is something you'd like to do and if it is profitable given the cost of electricity/capital cost.Mining especially ASIC mining isn't for the faint of heart or (light of hearing). It is loud, hot and sucks tons of power and isn't a fun thing to do at home for a long period of time unless you are serious and build another shed to house the equipment and pull extra power lines over.Always know that the cost of the equipment will depreciate and the ""break even"" goal post tends to shift with each Diff Adjustment or release of new (faster) ASIC miner.

### Reply 8:
but the chances of success with such small miners like gekkosciense usb miner is vanishingly small, isn't it?wouldn't it make more sense to invest more money e.g. whatsminer and benefit from the higher hashrate and the lower total consumption in relation to the total hashrate?

### Reply 9:
Well, 1st start hereAs stated in that ^^, BTC mining requires using ASIC-based miners. Period.Be aware that most miners are very power hungry - as in several kw - and all of that power is transformed into a lot of heat and noise from the fans cooling them. Think a high power space heater.Because of the power needed you MUST have very low cost electric power, at least 210VAC and it must be stable.For much <truncated> slower miners there are the ComPac-F USB sticks from Sidehackand the faster Futurebit Apollo miner & Node hereAnother good place to start is the Beginners & Help section.

### Reply 10:
Just keep in mind, energy costs, aside from the initial purchase of an ASIC are everything. Mining in Europe for example in most places within EU is so insanely unprofitable because of massively increased energy prices (+100% and more since February, with additional costs coming 2023).So, even as a hobby that you may be okay to lose some money on, be aware that if you let an ASIC run severa<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Bitmain S-19 XP"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Immersion cooler"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Apollo"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S19/Pro-Hydro version"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Compact F USB miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Gekkoscience USB miner"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Whatsminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ComPac-F USB sticks"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Futurebit Apollo miner & Node"",
    ""hardware_is_owned"": false
  }
]"
24183,"Date: 2023-10
Topic: S17 Pro - stop mining: Can't get temperature sensor type!
### Original post:
I have an S17 Pro 56T which has stopped hashing, giving the error message 'stop mining: Can't get temperature sensor type!'. I have tried rebooting and power on/off rebooting. I've not seen this specific error before however most times I've had temp sensor issues it has been a faulty PSU. Does this also indicate a faulty PSU or is it an actual temperature sensor failure? If it IS an actual sensor failure, would aftermarket firmware allow this to run?Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0<rest of post truncated>

### Reply 1:
put braiins on a sd card and give it a shot. pretty sure it will run.

### Reply 2:
What you talking about is an error that says ""read temp sensor failed"", in that case it's almost always a bad chip unless the error appears on all 3 hash boards then that means a PSU issue, however, your problem is less serious than that.sensor ""TYPE"" issues are usually related to the control board, flashing the miner using SDcard will often fix it, you could try custom firmware as well if you like, although that might not be needed if the stock firmware fixes it.

### Reply 3:
I tried a 'soft' firmware update with latest Bitmain firmware (remotely) and it fixed the issue - thank you!

### Reply 4:
Thanks for follow up

### Reply 5:
I got the same issue for temperature sensor type issue.I updated my s17 pro 53T to bitmian.com online latest firmware (4/27/2020) but didn't help.Could you share more about your 'soft"" update?Thanks in advance!

### Reply 6:
Did you try the other suggestion above?Try to flash it through an SD card you can find the firmware under this link <link> it doesn't solve the issue your last hope is to flash it with BraiinsOS check their official thread here <link>

### Reply 7:
I was wondering if you solved this problem by any other method? I think there may be false soldering on the PIC chip. In the 17 series, the temperature sensor adopts the I2C serial method. Once the PIC fails, it will also affect the temperature sensor. But as mentioned above, if this problem occurs on all 3 boards, it may be a problem with the PSU.

### Reply 8:
glad I found this thread. I have the issue of machine booting and working for two or three minutes.on low then the triple sensor fail..on normal it runs under 1 minute then triple sensor fail.my guess is that the psu is bad.oh well left it up at the mine . I will fix it another day.

","[
  {
    ""hardware_name"": ""S17 Pro 56T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""temperature sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""SD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17 Pro 53T"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PIC chip"",
    ""hardware_is_owned"": false
  }
]"
11278,"Date: 2023-04
Topic: Antminer S17+ - doesn`t start hasing!?
### Original post:
It looks fine have you set up the pool with the correct stratum URL and user and pass?If yes would you mind erasing everything and setting up it again make sure it doesn't have any extra spaces because it may lead to connection failure to the pool server.If it didn't work reflash the unit make sure to re-download the firmware and make sure only use a normal browser downloader don't use the internet download manager to avoid firmware corruption.

### Reply 1:
Hi Guys!I have an antminer S17+ that start up just fine but doesn`t start hash.I will attach the kernel/system log so maybe someone can give me some advise what can be wrong.Thanks in advance!/Magnus

### Reply 2:
Have been careful with the pool addresses, also deleted and wrote new ones but no improvement. Miner refuses to start hashing. Have also tried with another PSU and control board but without success. I feel sooo frustrated, after have spending so many hours without any progress:(LNKTEXT

### Reply 3:
What exactly is your miner's current firmware? Does it look like a Braiins OS? I'm not so familiar with Braiins Logs but would you mind trying to reflash it back to stock firmware so that we can troubleshoot the issue of your miner?Once you revert it to stock firmware set it again and let it run for a few minutes before you copy the whole kernel logs and update here.

","[
  {
    ""hardware_name"": ""Antminer S17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  }
]"
24137,"Date: 2023-06
Topic: S19j Pro 104th chips state is ""normal"" but wont hash???
### Original post:
There is a possibility that the 1st hashboard is not connected properly.What I would like you to try is to replug all cables of the 1st hashboard and then try again.Or if my suggestion do not work would you mind to share the whole kernel logs? Post it here but make sure to put them all inside the insert code tag before you post. So that we can troubleshoot the issue.

### Reply 1:
<truncated> <truncated> 12:59:02 Open miner sn file /config/sn error2023-06-11 12:59:02 Miner compile time: Mon Dec 26 17:10:01 CST 2022 type: Antminer BHB42XXX sn :2023-06-11 12:59:03 This is fix-freq version2023-06-11 12:59:03 Miner compile time: Mon Dec 26 17:10:01 CST 2022 type: Antminer BHB42XXX2023-06-11 12:59:03 commit version: f2ab6bc 2022-12-26 17:08:34, build by: jenkins 2022-12-26 17:22:172023-06-11 12:59:03 opt_multi_version = 12023-06-11 12:59:03 opt_bitmain_ab = 12023-06-11 12:59:03 mid_auto_gen = 12023-06-11 12:59:03 <truncated> = 02023-06-11 12:59:03 port 439 already exported2023-06-11 12:59:03 port 454 already exported2023-06-11 12:59:03 port 440 already exported2023-06-11 12:59:03 port 455 already exported2023-06-11 12:59:03 port 441 already exported2023-06-11 12:59:03 port 456 already exported2023-06-11 12:59:03 port 438 already exported2023-06-11 12:59:03 port 453 already exported2023-06-11 12:59:03 port 446 already exported2023-06-11 12:59:03 port 445 already exported2023-06-11 12:59:03 Note: front fan is power on!2023-06-11 12:59:03 Note: rear fan is power on!2023-06-11 12:59:03 start the http log.2023-06-11 12:59:03 <link> start ret=02023-06-11 12:59:03 start<rest of post truncated>

### Reply 2:
What would cause this to happen?Chips state is ""normal"" yet the board wont hash.<link> tried to reset to factory defaults, updated the firmware, physically unplugged it to reboot. Still no improvement.I took it apart yesterday to blow out all the dust. The board started woking for about 10hours before it dropped again.This miner is only a few months old. It was purchased from a Bitmain dealer and the box was sealed. It only had a few months left of warranty.

### Reply 3:
Not sure but I see a line that says mixed board.Did you get this direct from bitmain?I know sometimes if you put two units into one machine it wont run.I wonder if your miner has boards from two miners.

### Reply 4:
The box was sealed and purchased from an authorized Bitmain dealer.It was running perfect for the past 3 months.

### Reply 5:
You could try burning a sdcard with braiins os see if it works.

### Reply 6:
Mine does not have the sd-card slot.

### Reply 7:
How do my logs look? I can't make sense of it. lol

### Reply 8:
Honestly, I can't seems to find any errors in your logs.Can you try to run only one hashboard disconnect the two hashboard and swap cables and let see if the first hashboard will hash?Also, try to clean all terminals the cable, and the busbar it might have some corrosion/dust/rust so cleaning it might fix this issue.Can you tell us what pool do you mine and maybe the pool where you mine is currently offline?

### Reply 9:
This means one of three things, you have an amlogic ""cousin wangs covid ARM sale"" control board(thumb microUSB drive replaced microSD), a beagle bone control board(SD card slot is inside the control board housing), or it is one of the new ""cousin wang's 2023 ARM CPU sale"" control board I've started hearing rumors about(idek).The logs look fine also.You can try these options.1. Restore defaults in web interface and reload pool info.2. Try configuring it with a remote tool like BTCtools.3. Load/reload the latest firmware update from bitmain's website.Number one worked for me last week when I had a similar seemingly fine log that simply didn't want to hadh but that machine was new to me, yours was running fine.

### Reply 10:
I did restore factory settings and it made no difference. I also tried to update the firmware but it was already the latest version.I don't own a windows PC so BTCtools is not an option to try.

### Reply 11:
UPDATE:I moved the hash board to a different slot and now slot #3 is not working so its definitely an issue with the hash board itself. There is zero corrosion. Everything still looks brand new.I currently use NiceHash but I moved to F2pool and it made no difference.

### Reply 12:
Very odd and there's nothing about it in the log. Let's try this, run the machine with only the bad hashboard plugged in. Then let's see the logs.

### Reply 13:
Now we found the issue that the hashboard is broken it's not a software issue but a hardware issue.You can replace it with a new one but if you still want to repair the hashboard and you have some repair tools there is a guide on how to repair this hashboard Check this link below- <link>

### Reply 14:
I pulled out the two good boards and now its telling me ""No data yet! Data is currently unavailable"".It does not matter if I have it in slot3 or slot<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S19j Pro 104th"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""1st hashboard"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Antminer BHB42XXX"",
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  },
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    ""hardware_name"": ""front fan"",
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  },
  {
    ""hardware_name"": ""rear fan"",
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  },
  {
    ""hardware_name"": ""sd-card slot"",
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  },
  {
    ""hardware_name"": ""amlogic control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""beagle bone control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""2023 ARM CPU control board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": true
  }
]"
16506,"Date: 2023-05
Topic: Solar powered mining only during sunlight and without batteries
### Original post:
There's been numerous heated discussions comparing solar power and grid power. One thing that I have never seen being discussed is using solar panels without batteries, and mining only during sunlight, and not grid tied. Ideally, everything would work great when there is full sunlight and the solar panels are producing electricity at full capacity.The part that I don't know is what might happen in the morning or evening when the sun is low in the sky and the solar panels are only generating a fraction of its capacity. Just for argument's sake, let's say the mining rig is an Antminer S1 drawing 300-watts of power at 12VDC and two 12V 300-watt solar panels providing 600-watts of power during peak sunlight.My question is, what will happen in the morning and evening when the solar panels are only producing, say, 100-watts of power? Will the Antminer S1 work at a much lower hash rate? Or could it be damaged due to insufficient power? What if during the day, dark clouds came rolling in and the power fluctuates between 50-watts and 400-watts? Is there some kind of pre-built device or protection circuit that can regulate the power to at least 300-watts? I suppose a small battery can be add<rest of post truncated>

### Reply 1:
That's impossible because watts are a unit of power, not electric potential.Power in watts is the product of voltage and current (in amps).Dropping wattage at constant voltage means dropping current. There is no way to maintain constant wattage under these conditions unless you're supplying more current.

### Reply 2:
The speculative device in question would be a perpetual motion machine, because the specifications indicate that its a device capable of producing a constant Joules/s given a dropping input Joules/s. That's the definition of over-unity. (The only exception being of course being if some of the total max load is being diverted to a battery like described).

### Reply 3:
There is no such device. Solar powered equipment uses a battery to buffer the supply and load. To get optimal power out of the panels you will need a charge controller between the panels and the battery. A charge controller alters the apparent voltage of the load to match the optimal voltage of the panel (which will vary depending on current conditions). Slapping a panel to a fixed 12V load is going to kill 30%+ of your output. As for what happens if you supply a device designed to use 25 Amps less than 25 Amps? Well it depends on what undercurrent protection the device has. If it is none then it is very likely you could damage it. I would not recommend hooking a 25A device to a supply which can not consistently supply 25+ Amps.As for ways to protect the miners, unless the miner can be throttled down to use less voltage the easiest undercurrent protection (to protect the device and battery) is to measure the voltage of the battery. As the stored energy in the battery is reduced (because device is drawing more current than the charger is supplying) its voltage will decline. When the voltage gets ""too low"" (which will depend on battery type and safe max discharge) the connection to t<rest of post truncated>

### Reply 4:
I agree , but I would like to comment that a simple charge controller does not do anything than cutting the voltage exceeding the battery's characteristics. A simple charge controller cuts the voltage when exceeds the 13.8V (for silicone types ) and 14.2V (for Pb types).There is nothing else it can do. It makes nothing more than what a solar panel could do directly connected to the battery (except from protecting it from overvoltage).There is also the case of an MPPT charge controller that , as you said, can offer an additional 30% approximate gain compared to the previous case.But such a controller would cost more than twice than what an S1 does.Lastly, using an S1 with current lower than what needs, would create huge HW errors. No damage can be caused IMHO.

### Reply 5:
I would imagine it would make the miner unreliable at these times.One minute there might be enough power, the next minute there wouldn't be.The miner might switch on then off, possibly switch on, then not have enough power to complete the boot and remain in some locked state.Ideally, you only want to switch on electronic equipment when you have enough power.Solar panels are expensive.Have you considered a used veg oil diesel system.

### Reply 6:
I'm sure it will not work because to do bitcoin mining tools require a great power,but if the battery has a large capacity

### Reply 7:
Sunlight mining is a good decision but it remains to be seen whether the mining process is completed properly through sunlight. The more light that shines on the solar panel, the more electricity the solar panel will be able to produce. A place should be selected that receives a lot of sunlight for most of the day. But many times it can be seen that whe<rest of thread truncated>
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    ""hardware_name"": ""Antminer S1"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""solar panels"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""charge controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MPPT charge controller"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""battery"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""used veg oil diesel system"",
    ""hardware_is_owned"": false
  }
]"
11350,"Date: 2023-09
Topic: MOVED: Are you looking for ASIC Miner hosting? Terahash Solutions has you covered.
### Original post:
This topic has been moved to Service <truncated>

",[]
23320,"Date: 2020-08
Topic: [Solved] Avalon 921 Blue Light but no Hashing
### Original post:
HeyI just bought 12 Avalon 921 and out of these 12, I can't get 3 of them to work. Incidentally, I have 3 AUC3s and there is one faulty miner per each AUC3 in my initial setup; however, I checked one of the miners alone and the issue was still there, so controller and the AUC3s should be alright.All AUC3s are green and sometimes I get a very short blink of red; however, all miners are blue even when I can feel they are cold and the fan is slow. This is also apparent with the CGMiner API Log. Controllers also detect all miners and there is no problem there. The only thing I noticed with faulty miners comparing to healthy ones is the fact that they have high ""DH"" value which I don't know what it really means considering the fact that all other error values are zero (MH, etc etc).These devices make no hash what so ever (MW = 0 for all; DH > 99%). The fan is working, temp is alright and CGMiner shows ~10,000 GH activity (which is a lie considering the power consumption being like 0.5 to 1 amp). All PSUs are new and providing around ~12.3v.Attached is the CGMiner API Log (With Debug Switch) while all 12 miners are connected. 3 faulty ones are easy to spot tho.3 out of 12 is a big number<rest of post truncated>

### Reply 1:
Glad to hear things are now working. Ja, not sure why the A9's are so picky about versions as I never had the problem with the A7 and A8 series.Merit to ya for keeping us up-to-date on the results and changing the Topic title to show problem solved. Way too many folks fail to do that...Surprised Canaan has not responded to you yet! In the past they have always been very fast responding to the few issues I and others have ran into.

### Reply 2:
I too did not receive any reply from Canaan when I recently contacted them to request for a replacement for a failed A921 hash board. Their dedicated email address for RMA requests rma@canaan.io apparently no longer exists; my email to that address was returned.Only when Blokforge contacted Canaan on my behalf Blokforge took three weeks before responding to my support request did Lily Han from Canaan inform me that the person in charge of after-sales support had left the company. There is therefore currently no one handling support tickets at Canaan, according to Lily.Anyone seeking support from Canaan should therefore contact Lily directly at lily@canaan.io.

### Reply 3:
Weird. Wonder why they went with that controller vs a good old RasPi-3B?Along that line, if you do pick up another Pi, be aware that (at least in the past) the 3B+ version does NOT work.

### Reply 4:
Just for the sake of completion and as probably the first one here getting a VidToo controller; following are some pictures of the board and some of my thoughts regarding it. First I should inform you that I am yet to be able to boot it up again due to the fact that I don't have a MicroSD card in hand at the moment and my experiment with Ethernet and the USB stick failed so far (it was a long shot anyway).A very cheap and simple box is used with this board, but it does the job I suppose:<link> board supposedly has a hardware version 1.3 and software version 1.0 and is created for Avalon A9 series:<link> special going on inside, the board has 4 USB ports and one Ethernet Port along with a MicroUSB port for power and a MicroSD card slot. There is a place for a power adapter connector but it seems they ditched it out in favour of the MicroUSB connection. If you look closely at the left side thereof the board there is a 3pin TTL UART connector operating at 3.3v. I failed to find my TTL UART 2 USB converter to check if anything is going on with this connector. However, I don't expect much. There is also a button next to the MicroUSB port that I don't know what it supposedly does. Pressi<rest of post truncated>

### Reply 5:
Obviously the price. This board is way cheaper than an RP3. Smaller RAM, a cheap small internal memory instead of an 8GB SDCard, a slow and cheap chipset and no unnecessary interface like HDMI, GIO Pins, Wifi, etc. I bet this cost them 1/10 of what a RP cost especially as these seems custom made for Canaan.To be honest; RP3 is way too overpowered for OpenWRT; my PR3 was always under 0.01 load in the past two days. That's what, around 1% of one core?Didn't expect this. Thanks for informing me.

### Reply 6:
Cool information, thank you. If anyone has a Orange Pi, it would be interesting to test the H3-H2+ firmware with it and see if it works.

### Reply 7:
Flashing an SDCard with the ROM provided by Canaan fixed the VidToo Controller and I am going to replace my RP3 with VidToo especially because I had some issues with one of the AUCs keep disconnecting randomly to see if this fixes the problem. Tried multiple 2.5a and 3a power adapters and no success.A good thing about the VidToo controller I believe is that it doesn't use a USB Hub (need to double check it to be sure, but the processor u<rest of thread truncated>
","[
  {
    ""hardware_name"": ""Avalon 921"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""AUC3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""CGMiner API Log"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSUs"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""A921 hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""RasPi-3B"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""VidToo controller"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MicroSD card"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RP3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Orange Pi"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""VidToo Controller"",
    ""hardware_is_owned"": true
  }
]"
23376,"Date: 2020-12
Topic: Mining Voltage Converter Overload
### Original post:
Hello, I have been trying to run miners that I obtained from Whatsminer. They require 220V - 240V power source. Since I live in the United States, I have tried 110 to 220 V step up converters. I have tried 3 different converters, and each one overloads. The miners will run for a short period of time, then overload the converter and the converter will shut down.Does anyone have suggestions on what I can do to get my miners running? Surely there must be other people in the Western hemisphere that have gotten these to work at home.

### Reply 1:
Oy. don't use 'converters'. Their efficiency will be poor and as you note they don't handle much power (unless they're expensive).In the US we use 120/240v power. Power hungry appliances like electric ranges and dryers use 240v. Find/install a 240v plug to run your miners.All my computers are run on 240v-- the PSUs are more efficient that way.

### Reply 2:
What models of whatsminer do you have?some have low power settings. that will do under 2000 watts.if you have a 120 volt dedicated line at 15 amps it maxes at 1800 watts.and that is not 24/7/365 rating.if you want to run nonstop a 15 amp line derates to 12 ampsor 12 x 120 = 1440 watts. tag a 4000 watt inverter and try to run a 10 amp 220 psu and you over heat every thing.why is that? 10 x 220 = 2200 watts into the psu.guess what the invertor tries to pull on that 120 volt line 2200 watts.it may do it for an hour and then something fails.most volt regulator are cheap garbage so to stand a shot you need a 20amp 120 volt line. which does 16amps x 120 = 1920 watts 24/7/365and you need to be sure the psu is pulling under 2000 watts.or hire an electrician and put in a 220 volt circuit = better choice.

### Reply 3:
When you say 'converters' do really mean transformers? I hope so as converters are more complex electronic devices... As for transformers - you CANNOT use ANY that are sold for travelers. Long ago been there, tried that and they are all vastly overrated pieces of crap that very quickly burnt out due to the cores being too small and the windings being too thin.If you have to use a transformer make sure it is an industrial-grade one such as this from AutomationDirect. That will have to be wired to a dedicated 30A 110v circuit to feed it. Industrial-rated transformers do not have to be de-rated and generally last for decades. Industrial transformers are required to be at least 95% efficient per Energy Star regulations. The best ones push 98+%.As others said, best choice it to have an electrician install 240v outlets.

### Reply 4:
That seems like a robust transformer, price is a bit on the high end, it will work great for the old Microbt gears, the newer generations, however, require more than 3000w so a 3kVA transformer isn't going to cut it unless ran on LPM (assuming the gear has that).110v isn't good for mining by any means, all the extra cost that comes with these transformers will make it harder for you to make a profit, if you want to mine BTC get 220-240v.

### Reply 5:
Hey all,I went ahead and had an electrician add 220-240V outlets for me.It as totally worth it!I'm now running more powerful machines and expanding my operations to have multiple units mining different currencies.The down side.... my neighbors complaining about the sound from my garage. Now that is any externality I have to resolve and am Youtube'ing away for answers.

","[
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    ""hardware_name"": ""110 to 220 V step up converters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""240v plug"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""computers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""120 volt dedicated line"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""4000 watt inverter"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""10 amp 220 psu"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""20amp 120 volt line"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""220 volt circuit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""transformers"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""industrial-grade transformer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""30A 110v circuit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""240v outlets"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Microbt gears"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""3kVA transformer"",
    ""hardware_is_owned"": false
  }
]"
11280,"Date: 2023-04
Topic: BB Controller Board in S19XP?
### Original post:
I know most of the s19xp units shipped come with the newer controller boards but do the older boards such as BB V2.3 work in S19XP?

### Reply 1:
What exactly do you mean by this did you receive an s19 XP unit with a v2.3 control board?Or did you receive a different unit model and you are planning to use the control board for s19 XP?If it was installed on your s19xp then it should work unless you buy a different control board.Take note there is also a universal control board that works on s19 XP zeusbtc selling them.

### Reply 2:
The S19 XP came with a amlogic board (new style) but it died so I was going to try the BB board on it as I hear they are better for reliability. I just want to make sure someone has tried this before I order it.

### Reply 3:
It should work but if it does not work due to hash boards mismatch power/serial number/etc. Then you can flash the control board with BraiinsOS to bypass this issue. Just make sure that you buy a Xilinx control board not a beaglebone control board because this board can't able to flash with Braiins OS(Currently they developing firmware for beaglebone).

### Reply 4:
Where did you get the unit from the S19XP only came out last summer IIRC and should be under warranty from Bitmain.They may, probably will, make you jump through a ton of things to get it replaced but they usually do come around.The other issue is that if you have a spare board, do you want to put in the time and effort to get this one fixed? I would, just to keep a spare but since as you found out, they do fail....-Dave

### Reply 5:
As I know, in S19j Pro, the BB control board is the best, followed by xilinx, and the amlogic control board is prone to problems.

### Reply 6:
Good to know thanks for your input on this.

### Reply 7:
If you look at the available firmware for S19 XP, Bitmain currently does not provide one for Beaglebone Control Board. The only available firmware is for xilinx 7007, AMlogic and CV1835 CBs. Since there is no bitmain firmware for Beaglebone CB on S19 XP, you won't be able to run bitmain firmware if you install a beaglebone board. That being said, the lastest version of BraiinOS v23.02 for S19 XP works on beaglebone boards. They meant to support it for xilinx 7007 as well, but this was somehow missed. We are running performance tests with BeagleBone CB on S19XP as you can see here

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24063,"Date: 2023-01
Topic: Rockminer R-Box Schematic/Components List
### Original post:
My old Rockminer R-box stopped working and it appears that the C36 capacitor. I know it's a long shot, but does anyone have access to one that can identify the size of the capacitor or the schematics? The PCB is marked R_BOX_V1.1 2014_04_27

### Reply 1:
I tried to search but no one shared this <truncated> list for this unit.Why did you suspect the capacitor? Do you feel when touching the capacitor is too hot? It's a simple way to know if the caps are shorted.If you have a multimeter you can check the resistance of the power terminal if it shorted or not and if it's a ceramic capacitor you can remove it and try to run it without the capacitor.

### Reply 2:
Did you check your capacitor orientation? You can also bridge the track with wire if it is broken/not working if the system will work and then you will need to replace those capacitors

### Reply 3:
Just look here:<link> a bit down, there are nice pictures of the PCB.Click on the Picture, and you will have a zoom option.What makes you think that the C36 (where ever it is) is broken? A picture would be nice, to identfy the location.Found it, looks like a 100 nF Capacitor, but I can Measure it on one of my R-Box to be secure.

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23250,"Date: 2020-04
Topic: innosilicon t3h 50t s1 hardware fault?
### Original post:
hi guys my first post just bought 2 strongu u6's and got a innsilicon t3h 50t s1 thrown in the deal cheap, the guy i bought it off bought it but never got it working. he replaced the psu but still nothin. it fires up fine gets ip and such. upon startup the hash board lights go green then after 20 secs or so the fans go into overdrive and the hash board lights go off. then it never gets any further in the autotuning (presumably as the hash boards get knocked off by the fans over powering at a guess?) on the innsilicon page it just cycles round and round trying to autotune but not getting anywhere. any ideas would be great im thinking poss fan problems ? im new to this and this is my first post so be kind... thanks

### Reply 1:
Could be dead hashboards. Or corrupted firmware. Or faulty control board. Or some dead sensors. Actually, it could be anything... Try reading Kernel Log or whatever innosilicon calls it. There should be more info.And try what Phil recommend. Especially if you are located in 110v country.

### Reply 2:
you need 210-240 volts for the psu.try going to autotune and set to low speed say eco or eco+see if it will work on low speed setting.if you have low speed set and you have a good pool and 210-240 volts.psu should fire the boards up.sometimes psu is weak and the low speed setting works.other ways to trouble shoot pull one board put it aside and run two boards on low speed.if it works try balanced speed.if it works try factory speed.if it does not work pull second board.run 1 board on ecoif it works run on balancedif it works run on factory.if one board does not work try second empty control cable.does not work tried third empty control cable.if all that does not work pull the board put it aside. repeat with next board.you may still be dead.put it aside go to third board.if each and every board fails when used singlehanded. you cant test much more.

### Reply 3:
thaks for replying... tried that i set to economy and it did save the settings but no difference.

### Reply 4:
i wrote more. bottom line is you cant know for sure unless you have a good unit and swap parts.if you only have 1 unit.if you have 210-240 volts.pull two boards test one board in all three spots on low.test each and every board this way.that is nine tests.if it all fails and you live in the usa you can ship the unit to me . i have a fully working unit. i can test your parts by swapping them into my miner.

### Reply 5:
Tried all that. No joy.. when I unplug the boards and fire it up the green light on board stays on indefinitely. If I plug a board in (any board or cable tried all variations) itll stay on for a minute or so then go off both on socket and board. The green lights on the other two board sockets stay green though. Was looking into ssh control with minerstat but given up for tonight boo hoo.

### Reply 6:
Do you have Inno monitor ? It will tell you the error code and with that I can tell you whats wrong.I repair t3h 50t all day long. That kind of problem can be the control board not the power supply. Or that the SPI on the hash board fail.

### Reply 7:
Correct me if I am wrong but isn't error 30 something related to firmware?Otherwise, if I am wrong about that one, then I assume it would be PSU fault that miner is not working.In your place, I'd contact Innosilicon and tell them everything you know.

### Reply 8:
I have contacted inno tbf they're being very helpful I'm just waiting on a response. I had updated the firmware and factory reset to no avail

### Reply 9:
Did you ever confirm your voltage? I'd start with FW, easiest to rule out with a single unit. Sticker on your unit should give model letter. <link>

### Reply 10:
Error 30 is that the connection to your pool as been interrupt. Maybe a problem with your address. Most of the time for me this error appear with i start a T3h for the first time but it goes away after like 10 min of running.

### Reply 11:
hi sorry for the delay been mega busy this end. got a error code 30 . any ideas would much greatly appreciatedtype t3h+mode factoryerrcode 30factory emptypsu vendor gppsu version 7.69psu fault 128total hask 0.00thsaccept rate emptyhash #1 o.oothtemps 0/0/0standby falsenetwork dhcpruntime <truncated> <truncated> that makes more sense to you than me haha

### Reply 12:
Yeah, this was usual on some S9s in our country as well. It sometimes took between 15 and 30 minutes to power on and start mining. Have you tried waiting @faz27?

### Reply 13:
hi guys just an update i know its been a while.. believe it or not im still waiting for a new control board from china. they posted it weeks ago but the virus hit around same time so been about 6 7 weeks now. lol

### Reply 14:
Yea, Innosilicon is based in Wuhan. . .

### Reply 15:
hi guys update, my new control board arrived.. put it in... fired it up... exact same thing. gonna look at testing the voltage but the error code still says 30<rest of thread truncated>
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10904,"Date: 2020-11
Topic: Small miner viability question: USB-C bus power?
### Original post:
Hello, guys. Got a quick question.If I were to build a USB-C bus-powered miner would anyone buy it?What I'm thinking is a small self-contained device, probably around 8cm cube, that takes in 12V/5A from a USB-C PD bus and therefore doesn't need a brick.Problem is, I don't know how common it is to have a host capable of doing that. A brief glance seems to indicate most motherboards with USB-C just tie it to a 5V/3A dummy bus and have no support for PD protocol, so it looks like this device would not be compatible with the majority of available hosts.I have no USB-C equipped devices. My newest computers came from scrapyards. I have no direct experience with that system. But the idea's been tossed around long enough, and goodness the USB-C PD standard has been out for years. Is it widely available enough to merit the effort of designing and building a product for it, or is everyone stuck on 5V/3A which is still stickminer territory?

### Reply 1:
I have over 30 mobos many have usb c. , but I would need to know which ones have real usb-c.If you give me a day to really look at my mobos I can see which have it.I can send a 'real' one to you to play with.I have this one in minda b450 for ryzen cpusa b470 for intel cpusI can check them asapI have this new in box. looking at it now<link> says thismanual is here<link> ryzen mobo is cheap to middle priced 129 <link> to find most up to date intel I havethis is my newest intel mobo it is a b460<link> at 98 Bucksit does not appear to have oneso while I have a ryzen that would work I may not have an intelwhat chip will the gear mine with?

### Reply 2:
I'm not convinced that motherboard would do the trick either. The manual has zero information on USB power handling. The standard it references for the Type-C port is mostly for data rates. Newegg's product page has no pertinent info.But it does confirm something I've been noticing more lately, and that's that apparently system builders are now addicted to shoving RGB LEDs into every frickin' thing. The manual has more data on how to make things glow rainbow than anything else, which is, quite frankly, so useless it actually circles back around to negative utility.The chip would be whatever chip I want to build it around. Right now the question has nothing to do with the capability of the miner itself. I'm solely interested in whether or not enough host devices exist in the wild with 12V PD support that there'd even be a market for it.

### Reply 3:
I have two USB-C Gen2 ports on my Z370-i but doesnt say anywhere in the manual that they provide PD protocol. Just the increased transfer speed

### Reply 4:
I just picked up a ASUS TUF X570 Gaming PLUS WIFI System Board and it has Next-Gen Connectivity: Dual PCIe 4.0 M.2 and USB 3.2 Gen 2 Type-A /Type-C... that said, I have no idea what that means.<link>

### Reply 5:
My guess is that high power over USB-C is mostly an optional setup rather like PoE is for network devices - a special hub will be needed that can supply the higher voltage & power.In a way I can understand the lack of mobo's with built-in PD bus - no liability for failures caused by non-compliant devices plugged into the USB-C port going 'poof' or worse. Keep it at 5v and even the dumbest charger/device should be happy...

### Reply 6:
I spent all day looking and even with 500usd + mobos no luck.I agree with your take on it.I FOUND some mobos can use ai charging software (Asus) but it seems capped at 18 watts.

### Reply 7:
I have a lot of ryzen motherboards.4 four with 3900 cpus these are reasonably priced mobos in the 150 to 209 range. they can use a ryzen 3700 which a lot of people have they can use 3800 and 39002 with threadripper. these are simply too expensive and there are not a lot of them.<link> a no goI have this one. this one costs 1851 x USB 3.2 Gen2 Type-C Port (10Gb/s) (ReDriver) (Supports ESD Protection). claims more dataand this one<link> checking it. it does have a c port.still checkingmanual link<link> this appears to be a no goDecided to check my high mobo for the threadripper this is 1300+400 = 1700 for cpu and mobo minimum!AMD Ryzen Threadripper Processors :4 x USB 3.2 Gen 2 port(s) (4 at back panel, , 3 x Type-A+1 x Type-C)so has a type cand an - Ai Charger what ever that is.manual<link> think your good idea may not find a lot of good mobos.

### Reply 8:
There aren't a lot of decent hubs either, really. Most USB-C ""hubs"" I could find split it out into several USB-A, HDMI, ethernet, a card reader and who knows what else.Three or four years ago when this standard was rolling out, all kinds of people asked if I'd build a miner that could use it. Looks like there's still no good reason to because nothing supports the portions I'd require. Which sucks because it could be a pretty decent device.

### Reply 9:
Yeah if the port could feed 40 watts non stop it would be pretty good.

### Reply 10:
Wonder what it w<rest of thread truncated>
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23298,"Date: 2020-07
Topic: antminer s11 has low hashrate
### Original post:
Hello.I have an antminer S11 19.5 th miner.Previously, the device's hashrates was good. And the average 24-hour miner hashrates was no less than 19But now, since I updated to the latest bitcoin firmware, the hash rate has not risen above 17.7. What is the solution? Unfortunately, it doesn't work with sd card downgrade. Because the software version of downgrade is a signnature version.<link> miner sofware version<link> miner statuss11 kernel logsCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 B<rest of post truncated>

### Reply 1:
If you check the text above, the frequency of two hashboards is set to the default value of 600. And Miner kernel logs says: Two of the hashboards are badcore. And that's not good at all. Because it reduces the hash rate of two hash boards.Why can't read the frequency data from the hashboard :Code:main.c:8805: Chain[0] read_freq_badcores : 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff 0xff main.c:8817: chain[0]: [255:255] [255:255] [255:255] [255:255] [255:255] [255:255] [255:255] <truncated> chain[0]: [255:255] [255:255] [255:255] [255:255] [255:255] [255:255] [255:255] <truncated> chain[0] has no freq <rest of post truncated>

### Reply 2:
The s11 and I never got together. So I don't know a good log when I one. But the logs mention s9+.So maybe you did a bad flash?First off. if it was working why did you flash it.badddd baddd boy . never flash if you gear is workingI don't know how to help other then to say live with it.maybe it uses less power.

### Reply 3:
It's pretty strange that the version on your miner shows Mar 2019 while the latest S11 firmware is <truncated> , are you sure you flashed the latest firmware of S11?Anyway, this is what the latest firmware hasNumber 2 means, you won't be able to downgrade it, and number 4 kind of explains why you having the lower hash rate issue, based on the chips' temperature you have (which I envy by the way) your gear runs pretty cool and that could be the reason why your hash rate dropped, in return, your S11 now consumes a bit less power, you could try to set fixed fan speed at very low rpm ONLY to test if you are getting a better hashrate, don't run them constantly on low rpm.

### Reply 4:
This is beyond my understanding, I would suggest you contact thierry4wd or taserz those two guys are trusted and know about this subject more than most of us.Or, you could send bitmian an email and ask them for the SD recovery files.

### Reply 5:
HelloAs you say, the S9+ is a good wordIf I only knew that by flashing or upgrading, the hash rate would go downI never did itNow I don't know what to doThanksyou are rightAfter the update, I realized the consequences of my workI had to read the information with the update fileI will test your method and tell you the resultThe miner S11 fan speed is 4300 to 3000 when mining .

### Reply 6:
Live with it. Lesson learned.

### Reply 7:
helloI have an ideaRead the file of nand ic 29f2g08abea from another s11 miner 7007 control boards with tnm5000 universal programmerAnd write it to my miner ic flash....I think that's rightWhat do you think??

### Reply 8:
Hellothank youMy problem was solvedApparently there was no problem with the bitmain firmwareWith the programming two of the hashboards were solved <truncated> the device's hash rate came back above 19While it didn't reach 18 before, the average hash rate was about 17.5Everything is clear in the picture<link>

### Reply 9:
What is the last part you did to make your hashboard work again?Did you flashed the hashboard with working HEX or did you just flash the control board with sd card or did you update it with the latest fir<rest of thread truncated>
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10881,"Date: 2020-04
Topic: Official BITMINE CoinCraft series 28nm ASIC miners thread
### Original post:
Delivery schedule, please.

### Reply 1:
How about you deliver on your existing products before launching another pre-order vaporware

### Reply 2:
I cant reserve an order !!! I tried to put 2 orders it always asks me to pay !!!! I do not get it

### Reply 3:
Order number #11xx? Really? After 30 minutes? I hope your counting begins at #1000. Have a nice day!

### Reply 4:
1. Can I choose Reservation queue today and then pay in 2-3 weeks and jump into the shipment queue?2. Are you going to sell separate hashing cards? If so when?3. Are the hashing cards for Coincraft Rig and Coincraft Desk compatibile?

### Reply 5:
I still do not get the Reserve queue, It is not working for !!! is it working for anybody here? It is really a nice feature if they honor their promises.the better thing would be paying 10-25% of the order to show the interest and to secure both parties, then when they start mass production and have a better picture about shipping schedule they could ask for the rest of payment. it assures both your place in queue and funds for their production plan....

### Reply 6:
No, but I believe that's only a bug.

### Reply 7:
Ok it is fixed I can see my orders as reserved

### Reply 8:
Hi -can you tell us any additional info that lets us know who you are, who the asic designers are, so we can become more comfortable with you and your team etc?Have you taped-out already? when was it? and if you havnt, presumably it must be imminent to be able to deliver by end of november?How are you financing the NRE's etc? are you assuming the pre-orders will cover it?You say on your web site that you have absolutely the best 28nm asic out there, yet your specs dont seem to establish those credentials so can you share how you are 'better' than your competitors?Your power consumption per GH - while good at 0.6 w/gh, is no better than the three most recently announced 28nm entrants (hashfast, cointerra, and bfl) and it could be argued that hashfast and cointerra are claiming theirs chips will use LESS than 0.6W/GH at nominal volt/clock, and you're not saying it will be less, but are saying it will exactly be 0.6W/GH, which makes it sound like your silicon is close but not as low power as theirs. And then youre saying if you <truncated> it then it will have lower power, but that is completely true for any chip ever made, and all the others could claim that as well.How are you cooli<rest of post truncated>

### Reply 9:
remember before you order! <link>

### Reply 10:
does coincraft desk and coincraft rig use the same 28nm technology, I fail to understand the deference between these two. what deffer between the two designs ?they didn't mention this on the coincraft desk!! what chips they will use on that one ?

### Reply 11:
you can reserve a place in queue without paying if you are not comfortable with trusting them, they will ask for full payment when they are ready for mass production and shippment, which seems to me really fear, at least this is what I've understood.....

### Reply 12:
Giorgio, any info regarding:

### Reply 13:
Your exact shipping date is determined based on the position in the shipping queue, it is widely explained in the website please take a look there for more information!

### Reply 14:
Yes, now that we have finished running to set-up everything for the 28nm sales we will post the details of our upgrade program in the next few days!

### Reply 15:
Are you going to accept any payment methods that have consumer protections?

### Reply 16:
These are widely covered in our FAQ and in our website, please read it there you will find all the needed details.No, we are already financed, that is also explained in the news!Pretty easy, our estimations are conservative, not optimistic. We didn't put a lot of efforts in marketing, but we did put a lot of efforts in development This is at our nominal power usage, if you need better power consumption, you can go in powersave mode and go 0.35 J/GH which is, as far as we know, industry leading. Our low power mode makes use of very low voltage transistors and is optimized for that, this is very different than just <truncated> the chip! Aircooling up to Turbo mode, no need for expensive watercooling sets like some other competitors! These are expensive, prone to mechanical failures and bulky.

### Reply 17:
You are already protected by our Customer Protection Plan and, if you don't want to pay anything upfront, you can still place an order on the reservation queue where no payment is required at all (just few days before the shipping of your order).

### Reply 18:
I'm interested in this if I can reserve a place in line for a miner, and pay when it's ready to ship.Do you have a link to the miners you are making available for sale ? All I was able to find was the $50k product for 28nm chip orders.

### Reply 19:
reservation queue = end of already paid ones

### Reply 20:
Th<rest of thread truncated>
","[
  {
    ""hardware_name"": ""BITMINE CoinCraft series 28nm ASIC miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hashing cards"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Coincraft Rig"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Coincraft Desk"",
    ""hardware_is_owned"": false
  }
]"
10887,"Date: 2020-05
Topic: Antminer S19 95t First Image
### Original post:
how big are the PSU fans? are they still with that sharp turbo sound?

### Reply 1:
No , the fan on psu S19 is same on APW3, so, no turbo noise :p lol

","[
  {
    ""hardware_name"": ""PSU fans"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Antminer S19 95t"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""psu S19"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW3"",
    ""hardware_is_owned"": false
  }
]"
23274,"Date: 2020-05
Topic: Antminer T17/S17 Temp Sensor problem discussion.
### Original post:
I have concluded based on my experience and the numerous complaints online that the most common issue with all the new 17 series gears is the temp sensor.Getting this error in the kernel <truncated> read temp sensor failed: chain = 1, sensor = 0, chip = 64,Indicates a problem with the sensor, in some cases, the following methods will help fix it.1 -Reboot the miner.2- Sdcard the miner using the recovery firmware.3- Flash the latest firmware.4- 2 and 3 together (Sdcard and then the latest firmware).5- Installing a none-Bitmain firmware.The success rate, however, is not so great with all the above remedies, and it looks like replacing the sensor is a must in most cases.My plan is to use this thread to combine our efforts in gathering all the information we need to know about this issue and how to fix it.The process contains 3 steps:A - Identify the sensor positionsThe new gears have 4 sensors, based on the image posted by Luke in regards to S17 and S17pro.source support.bitmainHe also sent me this image of a T17 hash board.source support.bitmainHe told me that the 4 sensors are located near chip 9, chip 7, chip 22, chip 24.And based on his explanation to me, I have concluded that the<rest of post truncated>

### Reply 1:
An update on the situation.With the help of a friend, I was able to identify the part number of the sensors used on the S17 which is T45187JP9KY , apparently, there is nothing about that on google, so we had to check another miner to confirm, we found on the S9k the sensor part number is T45188J, so this gives us the idea that the sensors used on Bitmain boards must be (T451) which may be referred to as TMP451AIDQFR or simply ""T451 Temperature Sensor"".Current Issues:The temp sensors on the T17 are nowhere to be found ( this is all my friend doing the job so far as I don't have access to the hash boards at the moment), this leads me to think that they might be next to chips but UNDER the heatsinks, they are pretty small and they can pretty much fit in there, so if anyone has a T17 hash board and a good magnifier and is willing to contribute, kindly help us find those sensors, the info you needs is- They must be 4- They can't be located next to each other- They likely have a label that starts with (T451....)

### Reply 2:
Hello, I have the same problem with my T17. I contacted the Zeusminig authorized service in my country and the technician confirmed that this problem is very recurrent in T17 and T17+ models. Mostly it is because at some point the machine was exposed to high temperatures, damaging the temperature sensor, the good news is that they have already repaired this fault by replacing the sensor, the bad news is repair cost is $80 for each board. If I have any new news I share it.

### Reply 3:
Thanks for your input, I did contact zeusbtc's main branch china, and they told me quite a different story, not saying yours is wrong, but I think this one actually makes a lot more sense.To summarize that article, they simply imply that if all temp sensors of all hash boards can't report their temp then it's a PSU problem ( not a very common issue), if however less than 3 boards 'normally 1' hash board shows the temp sensor error, then the problem is one of the chips/heatsinks and not actually the temp sensors.The reason why I am 99% positive about the chip theory is due to the fact that the chances of FOUR sensors going down at once are very very very unlikely, those sensors don't produce much heat if any, they are located across different areas, I am not saying they will not fail, but highly unlikely for one of them to fail, let alone FOUR of them.To strengthen this point further, based on the article sent to me by zeusbtc, they suspect that the bad chip is usually the first chip, so we tested a T17 board which was giving us the 4 sensors error by putting some pressure on the heatsinks of the 1st chip pushing them down really hard, i learned this method from a video on youtube o<rest of post truncated>

### Reply 4:
This could actually be true. My 2nd T17+ got broken a minute after i tried to overclock it. Worked fine for 2 months before that. So please do not go over 800 Mhz on default cooling.It is possible if 1 chip fails then the whole chain fails. Also if your machine works normally in cooler hours of the day, try lowering the frequency.

### Reply 5:
thanks for sharing the information you received, I don't have much knowledge of electronics and unfortunately I must trust what they tell me It really makes a lot of sense what you say in reference to the 4 temperature sensors, how probable it is that all 4 will be damaged at once?but is it also possible that if one fails it will send incorrect information to the other 3? I don't know, as I mentioned before I have no technical knowledge of electronics and I don't know if this is possible.In my case the 4 sensors of the 3 hashboards are failing, so I rea<rest of thread truncated>
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    ""hardware_name"": ""Antminer T17/S17"",
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    ""hardware_name"": ""S17"",
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  },
  {
    ""hardware_name"": ""S17pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17 hash board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9k"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T45187JP9KY sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T45188J sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T451 Temperature Sensor"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
10910,"Date: 2020-11
Topic: Antminer V9 4TH
### Original post:
Just released from chinese website, what is this? V9? bitcoin miner?Chip: 135, BM1580Watt: 1027

### Reply 1:
Yep, 4Th at ~1000W shipping April to May for around $335 USD. I'd be interested in one of these if they brought em to the US site. Apparently 80% will be shipped April and 20% in May.On a side note, I haven't seen a miner sell for this cheap in a very long time from Bitmain. Seems to be a simple S7 underclock and they're trying to dump their existing miners.Link: <link>

### Reply 2:
WOW.. this is S7 underclock.

### Reply 3:
Yeah, I don't see this as a special miner either but rather Bitmain trying to sell off their S7s in their mining warehouses as mining becomes less profitable. Shitmain at work.

### Reply 4:
S7 at 4TH for 1000W? Huh, that sounds oddly familiar. Wonder where they got the idea.

### Reply 5:
Looks like bitmain is cleaning house. I wonder if they're just shutting down mining at least in China, making room for new technology, or what.

### Reply 6:
Link no longer works?

### Reply 7:
You need to be at the Chinese webshop for the link to work properly.Those specifications are quite unclear. BM1580 chip?

### Reply 8:
Thanks got it now. Wonder if it till pop up on the ENG webpage soon

### Reply 9:
Eastshore.xyz currently has them listed.$599 for March$499 for April

### Reply 10:
Seriously who will buy such a crap?

### Reply 11:
Anyone who is for some reason looking at buying an s7 on <truncated> about it.

### Reply 12:
Or someone that don't have 2k$ and need a heater space

### Reply 13:
I know, right? Now if they would only push it to 4.3TH at just under 1100w, then they might be on to something!

### Reply 14:
You know, I've still got one of those 3.7TH/900W ones running around. Some chump idiot gentleman had originally bought it and then threw a fit that it wouldn't run stock speed so he sent it back. And then someone else asked for it but never paid.

### Reply 15:
I think we are about to get new hardware with far better performance. J/gh

### Reply 16:
It is out on the Bitmain site for March shipping<link> price: $345 and MOQ: 5Meaning you spend $1725 individually. Of course, there's no information on the new chip's reliability or performance. But if we are to believe their stats, one 5 quantity batch would produce more hashrate combined and is cheaper than a single S9, albeit the tremendous noise and electricity guzzling. Meh, I would say to wait for the S9 fire sale when the newer, efficient one is released (will Samsung get to it) and you can't afford/risk it.

### Reply 17:
Umm, has anyone actually read bitmains page on this.. no where does it state what algo it does... so where did people come up with that sha256?

### Reply 18:
I guess they know what theyre selling.. so this is Sha256 and that means... crap <link>

### Reply 19:
You can find miner here: <link> located on Chinese web page. But there is no written which algorithm is.Bitmain announced on twitter that they are selling Bitcoin Miner(mentioned one) here: <link> <link> its ""Bitcoin Miner"" you can use your brain and conclude that its Algorithm is SHA256.But those number TBH look pretty heave...5KW for 20TH...pricey...

### Reply 20:
Ok, I just got an email, cliked on the link, read specs, and was like WTF.. whats it do? Just a simple mention of SHA256 is all that is needed, the A3 has Bake2b on its spec page... So essentially they are dumping junk...NICE!There will be suckers that buy these.

### Reply 21:
Yep i got that one as well. <link> if price order is not ""Minimum order of five"" it would be good. For new people that want to test how mining works for low price. But since its 5... Meh... Its only good for <truncated> user,We have just released the first batch of the all-new Antminer V9 miner today!The Antminer V9 is especially designed for long-term use in fast-growing mining operations.Please note that:1. This batch has a MOQ of 5 units and all ordered quantities can only be multiples of 5 (10, 15, 20 units and so on). The maximum number of units in a single order cannot exceed 300.2. The shipping for all confirmed orders will start after March 1st.3. Only Bitcoin Cash (BCH) and USD wire transfer will be accepted as payment methods for this batch. Please choose your preferred payment method within 30 minutes of your order submission or otherwise, your order will be EXPIRED.4. After successfully selecting your preferred payment method, please complete the USD wire payment for your order within 7 days, the Bitcoin cash (BCH) payment for your order within one hour, or, otherwise, your order will be EXPIRED.Click here to order now!When you make an order on the Bitmain website, the <rest of post truncated>

### Reply 22:
This V9 miner is actually most likely just a S7 underclocked & undervolted..Back in the 2016 I tweaked a S7 to perform 4.2Th/s at 1066W (at wall) power consumption by using methods in this guide provided by sidehack.Link to the guide thr<rest of thread truncated>
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  {
    ""hardware_name"": ""S7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""3.7TH/900W"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  }
]"
23338,"Date: 2020-09
Topic: s9 mining screen doesn't show anything
### Original post:
I set my s9 miner up everything seems to be running fine such as no beeps or red lights. set my mining pools up still everything good but go to miner screen it doesn't show no stats, the screen comes up but it doesn't show hashrate and the pools. i did download the latest firmware from bitmain to make sure i have up to date firmware.

### Reply 1:
S9 does not have speaker so it cannot ""beep"".No one can help you unless you post Kernel Log and screenshots of Miner Configuration and System.Use code function please for long lines like Kernel Log.

### Reply 2:
too bad you fucked up.you now locked the miner to bitmains firmware forever.why did you load firmware without asking if you should.well it is cheap low cost gear so dont feel so bad.go to system go to kernal log and put it in codeCode: in code format looks this way. quote me to,see what to do to code your kernal log

### Reply 3:
Try using a different browser or hit Ctrl+F5, this should bring the miner status page up, go directly to this link <link> if that doesn't work then you need to provide more details and screenshots.

### Reply 4:
If using incognito mode or other browser do not work you can also, try to reset the miner to the factory settings by holding IPbutton for 5 sec.It might just need to refresh the firmware after you update it to the latest version.You can follow the 3 guides from the link below to reset the miner.- 3 ways to reset the minerAnd check the ethernet cable and maybe it's not connected properly.

### Reply 5:
The IP Report button used ""as is"" doesn't reset the miner, it simply sends a DHCPDISCOVER message to your router/switch (whichever has the DHCP server ), sometimes the DHCP server fails to send a DHCPOFFER and the miner doesn't get an IP, but then the miner keeps waiting for the DHCP server and that can go forever, so this IP Report button sends another DISCOVER message in an attempt to get an IP address, but if you are already connected to the router and your miner has an IP address (OP said he set the pool worker and all that) means he indeed has an IP address and pressing the IP button for 5 seconds will do absolutely nothing.With the being said, holding the IP Report button prior to powering the miner on without letting go for a few seconds after the miner has been turned on will reset the miner to it's default settings.A side note: since APW3/APW7 don't have an on/off button this isn't exactly easy to do, you can hold the PSU still using your leg (knee/foot), use one hand to press the IP report and another hand to plug the cable in, of course if your miner is somewhere high this trick won't work.

","[
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  },
  {
    ""hardware_name"": ""router/switch"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APW3/APW7"",
    ""hardware_is_owned"": false
  }
]"
13643,"Date: 2020-02
Topic: S9 Hydro custom firmware (who is interested)
### Original post:
Im very interested, what watts per TH do you think we can do? And from what ive read the s9 firmware will not work with s9 hydro

### Reply 1:
Yes of corse, S9""hydro"" are totaly diferent hashboard I have files, i thinks is possible to unlock this !!!You just need SSH acces on your miner, if you have this, i post here my file and you try, ok ? i assum absolut not risk for your miner, only 3 text files (just save your original before)

### Reply 2:
Good work, I am uninterested, can you upload the files? Thanks: D

### Reply 3:
Why did you go for the Hydro version, it's pretty rare. I suggest if you could, do Antminer S9k, the stock firmware is terrible, and nobody with a good reputation in the mining software industry have made any custom firmware for the S9k yet.Even this new firmware does not fix the the ""reliability and stability"" issues of the S9k, the chips run cool and don't seem to be of a bad quality, so I am sure the firmware is the main issue here, and that's why I suggested you actually try to tackle a miner that has known issues rather than a miner that nobody actually uses.Having said that, I as always appreciate the efforts.

### Reply 4:
FFor unlock SSH , see here : <link> methode, and very easy !If you are ok on SSH acces, tell me here, and i prepar my mod to adapt on S9 Hydro

### Reply 5:
Good morning, I already have access to SSH, if you can share how to adjust frequency, it would be very good.Greetings.

### Reply 6:
Hi all, i have found code on original firmware on S9 and T9+ for take control fan / freq / voltageI thinks, almost sur, the S9 hydro are same ""error"" from bitmain ...who is interested ? if interessed, tell me about If you have acces to SSH , i give you my personal files (only text files, absolu no risque for miner) for testing My mod is here : <link> (make this on firmware update on your miner webgui)Is make for running miner on FIXED mod ! so, take control FREQ + FAN ... is possible you take VOLTAGE control if you running on MULTI-OPT firm PS : NO CONTAIN BMMINER !!! so ... no problems ! If you have any problem, reflash your old firmware !If update not work (no signature), you need take files manualy ... so ... open my mod and paste files on your miner by SSH :-bmminer.sh <truncated> + <truncated> + set_miner_conf.cgi <truncated>

### Reply 7:
Perfect ... you running with ""multi-option"" firmware ?i have uploaded + instruction on first post my mod modified for all miner ""9"" series ... i pretty sur, running well just i want to test it on hydro you got no problem, no contain ""spetial"" files, only ""text"" files

### Reply 8:
If I'm editing the 2019 frimware of the hydro, which has 5 modes ...I will try to see if it gives me a vune result.So in this mod you can regulate the frequency? and chip voltage?Thank you.

### Reply 9:
Yes ... if it working on Hydro series... just try it Try at ""stock"" value first

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    ""hardware_name"": ""Antminer S9k"",
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  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T9+"",
    ""hardware_is_owned"": false
  }
]"
23242,"Date: 2020-04
Topic: Locating dead hashboard on S17/T17
### Original post:
I have a dead hashboard on some T17 units that I would like to pull. Unfortunately, the red status lights are hidden by the metal housing. Is there a way to know which hashboard is failing in the unit based on logs or other information? I am not on site and have to rely on people that are limited on techy skills so I want to make it straight forward.Thanks guys.

### Reply 1:
Access the miner through WebGUI then go to miner's status tab and then under the ""Antminer"" you can see the list of hashboard with ""chain#"" as the image below.<link> a sample on the image above it has Chain# 6,7 and 8 so if the chain# 7 is gone then the middle hashboard is the dead hashboard.Or follow the guide on testing the hashboard one by one from here Test hash board one by one. So that you can find which one is dead or not.

### Reply 2:
Thank you for your responses to you both. And thank you mikey for confirming their physical arrangement, as I am not on site.I had assumed that on the control board, chains were logically in order (0,1,2 for the new generation of machines) from left to right. HOWEVER, I had installed over a hundred units that we purchased pre-owned, and their data cables were criss-crossed and their arrangement was very much random.The units in question were purchased new from bitmain. So in your experience does bitmain always plug hash boards left to right, so that 0=left, 1=middle, 2=right?Cheers.

### Reply 3:
I have put my hands on a dozen of new mining gears, but i really don't have enough experience with the plugs arrangements, simply because i don't dissemble most of them, and since these are new gears i doubt anyone has seen a large enough sample to confirm the theory.If i had to guess based on old gears at least, i would say ""Yes"", they come in order, but again it doesn't really matter, simply follow the ribbon cable from the hash board to the control board, i wouldn't risk ""blindly"" unplugging those because you might end up unplugging good working boards, everything is labeled on on the control board, it takes no skills whatsoever to know where does the cable from say chain 1 go to.

### Reply 4:
It is pretty easy to do.Step 1:Find the bad board from the GUI, either by the following BitMaxz's method (keep in mind that his picture is for S9, where it labels the chains as 6,7,8 which is different from the new models that show 1,2,3) or by searching for these words in the kernel logCode:0 asiccopy the exact words, hit ctrl+F and paste it in the kernel log, let's say you get the <truncated> 09:32:51 <truncated> Chain[0]: find 30 asic, times 02020-04-08 09:33:01 <truncated> Chain[1]: find 0 asic, times 02020-04-08 09:33:11 <truncated> Chain[2]: find 30 asic, times 0This means Chain 1 is bad.Step 2:Allocate the bad board in the miner, when you stand in front of the miner, facing the ethernet port they go 1,2,3 (left to right)They can double-check the numbering by reading the label near the socket where the ribbon cable goes, disabling the board is an easy process too, of course, step 2 must be done while the miner is powered-off.

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  },
  {
    ""hardware_name"": ""metal housing"",
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  },
  {
    ""hardware_name"": ""mining gears"",
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  },
  {
    ""hardware_name"": ""control board"",
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  },
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    ""hardware_name"": ""hash board"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""ribbon cable"",
    ""hardware_is_owned"": false
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]"
23248,"Date: 2020-04
Topic: 18 pin PHD connector?
### Original post:
bought the connector from ebay, caved in Looking for the resistor. Other videos suggest its 0201 package or smaller On mouser/digikey they have 4k87 at this package size can someone confirm the resistor values or provide insight on what they're doing? does that resistance value matter that much or would, say, a 10k work fine?Best,ark02

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    ""hardware_name"": ""18 pin PHD connector"",
    ""hardware_is_owned"": true
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    ""hardware_name"": ""resistor"",
    ""hardware_is_owned"": false
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]"
23323,"Date: 2020-08
Topic: Bitmain Antminer U2 being detected as U3
### Original post:
I am not even sure if I am posting this in the correct place as I have no idea what actually is the problem.I got my Antminer U2's out of storage to sell a few to a friend who was wanting to collect old asic miners. Out of the 11 I have only 4 show up as show up as ANU. The other 9 show up as AU3, which of course just throws errors. I am running cgminer 4.11.1 on Raspberry Pi 4.I have changed usb hubs, deleted cgminer.conf, rebuilt cgminer and they still show up as AU3.I remember using --usb ICA:0 in the past to disable block erupters in the past. It has been so long since I have used these. I remember using --usb ICA:0 to run two instances of cgminer, one for Blue Furry and one with the antminers.I know --usb AU3 does not work. Anyone know how I can keep them from being detected as U3?

### Reply 1:
This is the right board to your question as far as the forum rules are concerned, although I doubt that you will find answers here because the guys who know too well about these USB miners don't hang around here too much.I would say the best guy for this would be sidehack, you could probably send him a PM since he isn't very active in this 'mining support' section, or you might try to ask in this <truncated> wait and hope that someone here has had these little toys and can help you out, sadly I was not around when these pod miners were a thing.

### Reply 2:
I have not used these in so long.But try using this thread<link> are stick miners and vh the op has played with cgminer a lot.you need to use cgminer with zadig.zadig will load drivers for the sticks.

### Reply 3:
Funny you both mention shidehack and vh. I am running some old R808 and a few R606 in my shed. It is only thing I use cgminer at moment. I already tried using vh's fork of cgminer and is doing the same.I believe it is a problem with Raspbery Pi OS 64-bit when it has more than four sticks. I used my RPi with RetroPie installed as it was closest thing. I had no problem with it recognizing all the Antminer U2.It has been fun messing with these old stick miners. I held on to two of each stick miner I have ever used. But I think I just uncovered what might be a financial headache in the form of paper wallets. I used these to buy used GPUs 8-10 years ago.

### Reply 4:
I have a RPi 4 running a mix of 10 U1/U2s using VH's fork of CGMiner 4.11.1. The RPi 4 is 4GB version and is updated to the most current Raspbian (Buster).Dont forget that you have to grant access to the USB devices after installing CGMiner. (This is assuming that you followed philipma1957 and used VHs fork and default directory from the link that he posted.)Code:cd <truncated> usermod -G plugdev -a `whoami`sudo cp 01-cgminer.rules <truncated> rebootI run this from the <truncated> <truncated> -o <truncated> -u <truncated> -p x --anu-freq 250 --suggest-diff 128 --api-listen --api-allow W:127.0.0.1Keep in mind that you can set the frequency on the <truncated> <arg> Set AntminerU1/2 frequency in MHz, range 125-500 (default: 250.0)

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    ""hardware_name"": ""Raspberry Pi 4"",
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    ""hardware_name"": ""USB hubs"",
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    ""hardware_name"": ""R808"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""R606"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi OS 64-bit"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""RetroPie"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U1"",
    ""hardware_is_owned"": true
  }
]"
23198,"Date: 2020-02
Topic: Heat Calculations
### Original post:
Don't use refrigeration it will kill any profit you can attain from running gear. I posted in your other thread and as long as you have ambient temps below 40C (This is max) you just need to be sure you are removing the exhaust air. What is the environment and weather like where you want to mine? There are always options but in extreme climates you are better off to just mine like 18 hours out of the day if possible.

### Reply 1:
I'm new to this and trying to read up and understand about the cooling and airflow needs of the Antminer S9. Please comment on anything that you can add to this. I've pulled these numbers together, but I would greatly appreciate someone going over them to confirm that the values and calculations are correct. Thanks in advance!!!!!100 Antminers1,200 watts per Unit/Antminer3.41 BTUs per watt1 RT = 12000 BTURT = Refrigeration Ton(Antminer * (watts * BTUs)) / RT = Refrigeration Tons(100 * (1,200 * 3.41)) / 12000(100 * 4,092) / 12000409,200 / 12,00034.1 Refrigeration Tons

### Reply 2:
miners >>>>> fans>>>> say 30k cfm miners fans 25cfm >>>> air filter >>> miners ac air >>>>>>> air filter >>> miners you can send some ac air filteredbut sending filtered normal air in at 100f can work

### Reply 3:
Thanks for the information. I'm in the foothills of North Carolina. My thoughts are that the temps will not be too hot. Based on what I am reading, the secret is ensuring that the airflow stays constant with mild to low humidity. I'm actually more concerned about humidity than I am about the temps as long as I can keep the airflow up. Any additional thoughts are greatly appreciated.

### Reply 4:
Just do this, it's the best option by far. If possible, make it a 2 chamber: one cold chamber for the miners to intake and the other warm chamber to exhaust. Just make sure to extract all the warm air from the second chamber and you will be good and without AC.

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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""air filter"",
    ""hardware_is_owned"": false
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    ""hardware_name"": ""miners ac air"",
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23244,"Date: 2020-04
Topic: Antminer s9 firmware
### Original post:
Stop stop stopdo not mine it at nice hashif you want a steady payout use viabtc pps+ payment option.it will do 0.00001661 btc a th or 14 x 0.00001661 = 0.0002325 btc a day it will pay out when you top 0.010 btc.<link> there it should work fine.if you get bored waiting the 50 days to get paid.you can take a stab here 1 day a month<link> or nothing so 1 full block or zero.between the two pools you should be goodI would explain nicehash better but it will take too long to explain why you should not change the firmware and mine at that pool.

### Reply 1:
That is not how pps actually works, but without going into details i personally find pps pools to be the most profitable for my case, first reason is my internet connection reliability, second reason is the miners' stability, third reason, i treat mining like a business, i like to know exactly how much btc per day i am going to get regardless of the pool's luck, but again everyone has their own way of doing things, for pplns pools you have slushpool (large pool) abd ck and kano pools ( small pools) i am not aware of any mid-sized pools, but i am sure the others members might have a clue.

### Reply 2:
hi, i agree with all member here, nicehash is poor stability ! So ... if you don't know, nicehash have 2 pool SHA256 ! (SHA256 and SHA256AsicBoost) and you need select the correct...After, i suggest to you, don't install 2019 firmware version ! is locked and don't allow you to downgrade or remove this ! if you are interessed, my mod is available for free, no fee, is version with AsicBoost (ON/OFF) and full control your miner

### Reply 3:
This will be off-topic, there are a dozen resources online about how PPS actually works, but I can tell you what I think you don't understand based on what you wrote.It does not matter if the pool finds a block or not, as a miner that is none of your concern, you get paid for every accepted share even if the pool fails to find a block, in other words, every share has a ""price"", you submit the share you get paid regardless of anything else.A share is a share, it doesn't matter how many you submit, the only problem would be the minimum payout, which is 0.001BTC for most PPS pools, or 4.5 days at current base, which actually is not that bad after all, pools like viabtc do PPS+, the block rewards are PPS and the block fees are based on PPLNS, and that comes at 4% pool fees which is quite high for some.

### Reply 4:
I see, that makes sense. All the PPS pools are super busy and can swing that. They appear to be making their money from TX fees, while pps+ is looking like 4% fees. Totally was the confusion. Will add a pps / pps+ (not 4% for sure lol) pool to my rotation. Will be nice to be able to mine for a day and not have to worry about a block find. Or shutting down mid round. Thanks again!

### Reply 5:
Hi all,I recently traded some kid a bike frame for an s9.Out of the shipping box its working without issue. It works completely fine on something like ckpool, but on nicehash keep dropping to 0 hash from time to time. Submitted a ticket and they recommended I install the asic boost firmware.To start, I am an idiot. Im a linux engineer by trade (or well everyone is an engineer these days, lets just say linux admin). And gunned through the upgrade.I did take a screenshot of the current firmware that was installed prior.Code:Kernel Version Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018File System Version Wed Jul 31 16:18:27 CST 2019I could not SSH by default and did not copy the kernel log which was silly.I removed the pool to stop mining as I figured a firmware upgrade while under load isnt the best idea, and went ahead with the upgrade. Got the message firmware upgraded, reboot in progress.After the reboot, nothing changed. Did some searching and seems the 2019 firmwares are locked?. Came across an article that wanted me to install s9_fix_upgrade.gz. Went to install that, but got the no sig error.It appears nothing changed, the miner is blocking the update or somethi<rest of post truncated>

### Reply 6:
That is pretty normal for a shitty support like nicehash, almost everyone and their grandmother use asic boost firmware by now, so they should have asked you about the firmware you were actually using, and that is July 2019 which is actually ASIC boost firmware.as member supersonic mentioned before in this thread you might just want to use the following.kindly read the whole topic.and a word of advice to you, don't mine on nicehash, it will screw your gear, find a proper pool.SSH access is disabled on all new firmware made by Bitmain.When you upgrade the firmware, all mining operations stop, no need to do any of that.By USB you mean sdcard?It did exactly what it says it did, you have the latest firmware installed ALREADY, you flashed the same version, it did go through, but nothing changed, that is pretty normal, if you try to downgrade the firmware or flas<rest of thread truncated>
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    ""hardware_name"": ""bike frame"",
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  },
  {
    ""hardware_name"": ""USB"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""sdcard"",
    ""hardware_is_owned"": false
  }
]"
23213,"Date: 2020-02
Topic: Do antminers use power when on but not connected to the internet?
### Original post:
Let's say the internet goes out for a few days. Will the antminers still be using significant power or would they barely be using any (just enough to power the fan and standby mode)

### Reply 1:
I think the miner will keep restarting(for antminer) if there is no internet connection so the miner will still continue to eat power.You will need awesomeminer to automate the miner to turn it to sleep mode if there is no internet connection which will consume very little power.Read the awesomeminer rules from here Rules - Detect mining issues and automate tasks.

### Reply 2:
Yes. Antminers run the boards with a certain amount of power even when not mining. The clocks are on as well, meaning it's pretty easy to find bad chips, but you also can't leave a board out of an antimer with +12 connected for a length of time otherwise it will get very very warm (BTDT with an S7 board)If anyone's bored I can check the values but I recall it being about 200 watts per board.Dragonmints do NOT do this, which makes finding bad chips a real pain in the ass.

### Reply 3:
Bitmain products not only keep using power, they use MORE power. Beware of overheating when you see all 3 pools ""Dead"".Would be great if they had the power saving features any brand of cpu or gpu have nowdays, but they don't.Do the test: disconnect the lan cable and observe the temperature values and fan speeds. Look at power usage too if you happen to have a kill-a-watt or such around.

","[
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    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""awesomeminer"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S7 board"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Dragonmints"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""kill-a-watt"",
    ""hardware_is_owned"": false
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]"
23178,"Date: 2020-01
Topic: Stratum protocol - problem with implementation in python
### Original post:
Hello everyone For a couple of days I'm trying to write simple script in python to communicate with stratum pool server. I'm using simplified code of NightMiner (<link> and some testnet I've foud ( <truncated> but I can't get the proper result. Maybe someone more experienced could help me. Below I show each step of my script (step, no python source code).1. connect to the server, authorize, get the job dataAfter connecting to the server I send this <truncated> 1, ""method"": ""mining.subscribe"", ""params"": []}\n'b'{""params"": [""testuser"", ""anything""], ""id"": 2, ""method"": <truncated> get the following <truncated> get the coinbase and merkle rootWith this data and <truncated> I can build the coinbase (in byte form, but I will show as hex in this <truncated> thing to do is double hash the coinbase with SHA256 algo, which gives me the following <truncated> is no merkle branches (merkle branches array is empty), so hash above is our merkle root.3. building the headerWith merkle root and data received in step 1, I can start building a header:Code:header= version + prevhash + merkle root + ntime + nbits + nonceI use the values as <truncated> - received '20000000', after little-endian conversion<rest of post truncated>

### Reply 1:
Ok, I have found the mistake, here are some details: <link>

### Reply 2:
Merit given for reporting back that you found the solution!

",[]
23289,"Date: 2020-06
Topic: how can i replace P5 M3x PSU with server PSU?
### Original post:
Hi, as i said i can't buy replacement, i am in Iran.

### Reply 1:
Thanks man

### Reply 2:
Hi. I had a broken M3x PSU (the P5 one), that couldn't find any replacement. so my question is can I replace the server PSU (HP, Dell,... doesn't matter, I have delta) with that?i researched and the problem is it wants 2200W power but server PSU mostly are 1200W. they can be paralleled with some fault detection or any other solutions for safty. I found that parallelminer.com is selling this item for M3: <link> this item can be done DIY too without fancy PCB.(that's my goal).but another problem is that the M3x PSU has 3 wires that called ""hardwired"". I researched again and find that 3 wires are GND, SCK, SDA.<link> I think that is communication between PSU and control board that sends the serial number of PSU to the control board and is voltage adjustment communication too. (to lower the voltage at high hashrate).the thing is servers PSU has Potentiometer to adj voltage. so is it possible to imitate that communication with Arduino that controls voltage adj pot on server PSU or any other data that control boards need?P.S: buying replacement is not an option to me, because of my country.

### Reply 3:
then does china ship to your country

### Reply 4:
if I buy this <link> and ship to usa. it is 105 + 106 to ship = 211<link> allows shipping to Iran I would need to pay 87 to ship to you so 211+87 = 298Simply too much cost to be worth it.And Most likely my government will put me a potential terrorist list because I shipped it to you.You need to find someone in Asia that has an old one this is will to sell it to you.Your diy idea could be good. but these OEM psu's talk to the controller. I don't know how to get past that issue.I have a m20s I got a replacement p21 psu I had a p20 psu.In order for the psu and miner to work I had to reprogram the controller.In my case microbt/whatsminer gave me a firmware patch.In your case I do not know how to program the controller to work with the diy psu.

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    ""hardware_name"": ""server PSU"",
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  {
    ""hardware_name"": ""HP, Dell, Delta server PSU"",
    ""hardware_is_owned"": false
  },
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    ""hardware_name"": ""parallelminer.com item for M3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""M20s"",
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  },
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    ""hardware_name"": ""P21 PSU"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""P20 PSU"",
    ""hardware_is_owned"": true
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]"
23363,"Date: 2020-11
Topic: Troubleshooting an old S9
### Original post:
at the end of the logFan Pwm = 0It won't run at that numberbut I do not know if you have a bad fan or a controller has a bad fan jack.

### Reply 1:
Hmm, I didn't catch that. All fans are running. Is there a way to bypass the fan monitor to continue testing?

### Reply 2:
Hi guys. I'm trying to troubleshoot an old S9 that I inherited that doesn't hash but not sure where to start. The Status page is blank.here's the Kernel log:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 16800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c075a640, node_mem_map debd8000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 126976 pages, LIFO batch:31[ 0.000000] PERCPU: Embedded 8 pages/cpu @debc1000 s9344 r8192 d15232 u32768[ 0.000000] pcpu-alloc: s9344 r8192 d15232 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 125984[ 0.000000]<rest of post truncated>

### Reply 3:
Not that easily A lot depends of the controller you have and if the fan is faulty to the controller fan jack is faulty.That is if you are using bitmain firmware.If you use braiins software you can bypass 1 fan and run at low speed with 1 fan

### Reply 4:
I don't think it's the fans, they do read just <truncated> get fan[4] <truncated> get fan[5] speed=6240Both over 5k RPMs which is more than enough, what seems to be the problem is <truncated> retry Chain[J7] has 24 asicJ7 should show 63 ASICs or else = problems.J7 is by default the middle board unless somebody has played with the miner, but it's easy to spot, just follow the label j7 from the control board and you will know where is it, fully unplug it (don't just remove the ribbon cable, remove the 3*6pin PSU cables as well) and let's see what the miner does next.If that doesn't work, please post a screenshot of your pool settings ( you can hide sensitive info).

### Reply 5:
Man i tell you what. I posted the latest log here and went to copy the mining address and wouldn't you know it, I had a space after the port. Removed the space, waited about 60 seconds, and she's running like a wild banshee. Well, as much of a banshee as an s9 can run. If I had a nickel for every time I tripped on my own pecker like that I'd be rich by now. Thanks for the help troubleshooting guys. You're the best!

### Reply 6:
Pool URL spaces is very common that's why I usually ask people to post their pool settings, hope that you learned a lesson, always remove the spaces until the devs in Bitmain write a simple strip() function which would ignore leading/trailing spaces, but that won't happen anytime soon because they are so busy trying to lock us out of these miners with their stupid signatures and security.

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23263,"Date: 2020-05
Topic: Antminer T9+ Low Hashrate on chains
### Original post:
I recently bought a Antminer T9+. The hash rate starts at 10TH/s during the first 10 seconds and then lowers to 7TH/s after a while. However, the decrease is significant on two chains, both running 100 or even 6 GH/s. I think it's not the PSU's fault as I tried on both Bitmain and OEM PSUs. Both PSUs work fine on my S7s. My wall outlet also supports 220 volts and my cord is also rated 220V. I only faced these problems on my S7 if fans were set to AUTO, but the T9+ doesn't have this function. Can anyone help me with this? Thanks in advance.<link>

### Reply 1:
Could you paste the kernel logs on pastebin or here just use the ""insert code"". I think you can fix this by hard resetting your T9+ miner, you follow the guide here on how to restore factory your miner follow this <link>

### Reply 2:
Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #57 SMP PREEMPT Fri Dec 9 14:49:22 CST 2016[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: CMA: reserved 128 MiB at 27800000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 258048[ 0.000000] <truncated> node 0, pgdat c0740a40, node_mem_map e6fd8000[ 0.000000] Normal zone: 1520 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 194560 pages, LIFO batch:31[ 0.000000] HighMem zone: 496 pages used for memmap[ 0.000000] HighMem zone: 63488 pages, LIFO batch:15[ 0.000000] PERCPU: Embedded 8 pages/cpu @e6fc0000 s9088 r8192 d15488 u32768[ 0.000000] pcpu-alloc: s9088 r8192 d15488 u32768 alloc=8*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 256528[ 0.000000] Kernel command line: noinitrd mem=1008M <truncated> <rest of post truncated>

### Reply 3:
Unfortunately you appear to have the same problem I encountered with these units. You will have a problem chip in each of the chains that have dropped to around 100 GH/SMy T9+ only has one problem chip and hashes around 9-9.5 TH/S so it wasn't worth sending back to China.You might find this to be different, if you are located in the US or anywhere else they have outside service centers.The only thing you can really do is RMA the unit and get it repaired if the cost is worth it for you. I wouldn't even bother getting approval to open it up, as they make you send the entire unit in for repair anyways even if you diagnose the problem area.After you contact support they will tell you to upgrade the firmware, this did nothing for me but maybe it will help you out if it is a different problem.

### Reply 4:
Your B2 error. Run only B2 and see if there is faulty.

### Reply 5:
My guess your miner is reach the high temperature protection that is why the hashrate is drop.Could you try this method <link> hope that this method will work in T9+ then setup the fan to high speed and monitor your miner. If this won't work it might be a hardware issue or some chips from hashing board are broken.

### Reply 6:
I actually found out the problem. It's seems to lie within house wiring. The seller tested at his shop and the machine ran smoothly. What type of wiring would you use? I have 4 240V sockets and an AC wired to a IEC 60898 MCB. I heard the rated voltage of the MCB is under 440V and the rated current is under 125A. Also the cable wire used for this circuit is a 2.5mm cable. I hope this makes sense, I come a complete newbie when it comes to electrical stuff.

### Reply 7:
can you help me ? please .... i have a problem with my antminer T9 + it restarts every 3 <truncated> read PIC voltage=890 on <truncated> Chain:2 <truncated> Chain[J3] voltage <truncated> Chain:2 base freq=575Asic[ 0]:575 Asic[ 1]:575 Asic[ 2]:575 Asic[ 3]:575 Asic[ 4]:575 Asic[ 5]:575 Asic[ 6]:575 Asic[ 7]:575 Asic[ 8]:575 Asic[ 9]:575 Asic[10]:575 Asic[11]:575 Asic[12]:575 Asic[13]:575 Asic[14]:575 Asic[15]:575 Asic[16]:575 Asic[17]:575 <truncated> Chain:2 max <truncated> Chain:2 min <truncated> read PIC voltage=890 on <truncated> Chain:3 <truncated> Chain[J4] voltage <truncated> Chain:3 base freq=575Asic[ 0]:575 Asic[ 1]:575 Asic[ 2]:575 Asic[ 3]:575 Asic[ 4]:575 Asic[ 5]:575 Asic[ 6]:575 Asic[ 7]:575 Asic[ 8]:575 Asic[ 9]:575 Asic[10]:575 Asic[11]:575 Asic[12]:575 Asic[13]:575 Asic[14]:575 Asic[15]:575 Asic[16]:575 Asic[17]:575 <truncated> Chain:3 max <truncated> Chain:3 min <truncated> read PIC voltage=890 on <truncated> Chain:8 <truncated> Chain[J9] voltage <truncated> Chain:8 base freq=575Asic[ 0]:575 Asic[ 1]:575 Asic[ 2]:575 Asic[ 3]:575 Asic[ 4]:575 Asic[ 5]:575 Asic[ 6]:575 Asic[ 7]:575 Asic[ 8]:575 Asic[ 9]:575 Asic[10]:575 Asic[11]:575 Asic[12]:575 Asic[13]:575 Asic[14<rest of thread truncated>
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    ""hardware_name"": ""PSU (Bitmain)"",
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  {
    ""hardware_name"": ""220V wall outlet"",
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  {
    ""hardware_name"": ""220V cord"",
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  },
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    ""hardware_name"": ""IEC 60898 MCB"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""2.5mm cable"",
    ""hardware_is_owned"": true
  }
]"
23226,"Date: 2020-03
Topic: Antminer S15 with latest firmware consumes 1900W in lower temp env of 24C
### Original post:
Hi guys,I recently purchased a S15 and I ran several tests since, measuring the power consumption on wall. All seemed fine until 2 days ago when I installed the latest firmware <truncated> In Finland the outside temp is cool enough to allow my S15 to report a ""PCB temp"" while running of 23-26-27-23C in the 4 rows and first column of the monitoring screen. The chips temp is in the 60-72C range for all tests.Here's my test case:1. I start the miner in a 20-21C room, allow it the time to boot. Initially all seems ok, hash rate 28TH and on wall consumption is 1600Wh.2. 4 mins after this I see this logs in the kernel log (notice the <truncated> 10:03:48 <truncated> Entering low environment <truncated> 10:03:48 <truncated> bring_up_pcb_temp = 25, <truncated> = 27, ideal rate = 28000, AVG_rate = 26838 2019-04-22 10:03:48 <truncated> re_open_core start!2019-04-22 10:03:50 <truncated> Heartbeat failed on Chain[3], retry_count=1! read_back_data[1] = 0x0, read_back_data[2] = 0x02019-04-22 10:03:51 <truncated> Heartbeat failed on Chain[2], retry_count=1! read_back_data[1] = 0xfe, read_back_data[2] = 0xfe3. The miner consumption drops to some idle 100W for the next few minutes.4. For the next 5<rest of post truncated>

### Reply 1:
Maybe you are experiencing low temp protection this might be the reason why you are getting unstable hashrate for the first run did you try to run the miner for a longer time? Let it run first for 3 hours and let see if you will get stable hash rate and miner consumption.Next time don't upgrade the firmware to the latest version if your miner is running fine without any software issue. Bitmain releases new 2019 firmware that mostly fixed all security issue(Disabled SSH access) if you upgrade the miner to 2019 firmware the miner SSH access is disabled where you can modify the config and bypass temp protection. There is no other way for now to downgrade the firmware to lower version unless if you decide to run them with modified firmware.

### Reply 2:
@ op Never do a firmware upgrade from bitmain until many people have done it.op I tossed you some merits for letting us know about this.

### Reply 3:
Is there any modded firmware for the S15?It is a shame this situation is extending to all their products, but i learned about it first with the S15 when someone announced defeating the ""security feature"". Now the question is, can the S15 be made to boot from an sd?OP sadly made the mistake of upgrading the firmware, but Bitmain has removed him the chance to revert back.

### Reply 4:
Jus FYI, I received the unit 2 weeks ago, loaded with the 2018 Dec firmware in which the SSH was already disabled. I upgraded hoping for a fix to the root cause (the ssh vulnerability) and reactivation of the SSH. The hash rate is stable once a certain operational mode is achieved (ie cold or warm env operation.Now... my main concern here is the increased power consumption to 1900W in colder env (20-24C 68-75F) (which is not that cold anyway and I guess many datacenters keep it even below this):If I operate the miner in such ""colder environment"", hoping for a better performance (lower RPM fan) and efficient cooling, it ends up backfiring by jumping the electricity consumption by 300W (at the same hash rate), which at the current BTC price and electricity rate changes the whole economics quite a little. I bought this one miner because of improved efficiency and all that goes down the drain if it's too cold in the room?!? This cold protection seems to defeat the whole purpose of redesigning S15 as a more energy efficient miner.I'll continue testing when I'll have more time and report back. Thanks for all the comments.

### Reply 5:
The power consumption is too high it should be around 1600w +/-7% there is something wrong about the power supply. Have you tried to enable the low power mode at miner configuration tab? Let's see what changes in power consumption and hashrate?I thought something that you should try and maybe you may able to reduce the current power consumption of the miner. Try this method below I know its for s9 but you can try it on s15 and maybe it may work.- Solution for ANTMINER S9 FANS SPEED Up & Down every 20 Seconds.Follow the guide above to appear the hidden menu where you can see the fan speed and frequency settings. Just play the settings both fan speed and frequency and let's see if it affects the temp and power consumption.

### Reply 6:
Just to be clear... my experience is that the S15 indeed consumes 1600W +/- 20W as long as the room temperature is high enough that the PCB temp reads above 27C. If not only then the consumption jumps to 1900W.

### Reply 7:
Yeah, that is why I suggested you to try the link above to see the hidden fan speed and frequency my thoughts is to try to change the fan speed to lower speed so that the PCB can be reach to 27c or above so that the low temperatur<rest of thread truncated>
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23356,"Date: 2020-11
Topic: problem with control board of t17e
### Original post:
Hello. I have a t17e and want to change firmware to braiins os , I change but not work on t17e and uninstall with bos+ of braiins , then my hash board was down and I can't flash with memory and i haven't any IP , two of green and red led such as this pic: <link> get this USB TO UART convertor: <link> connect such as this: <link> putty: <link> no connect to control board , but when I disconnect gnd cable i get this: <link> anyone Help me?ThanksJafari

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23327,"Date: 2020-09
Topic: S15 crapped out
### Original post:
Thanks for the help- But due to the fact the miner keeps shutting off and restarting that's all of the logs I can retrieve. I'm guessing maybe the psu is toast? TIA Best, J

### Reply 1:
Yes its most likely (and hopefully) a SMPS issue are you able to temporarily connect the PSU from another miner to see if it comes on ?

### Reply 2:
Take it apart remove 2 boards.Try with 1 board in slot 1try with 1 board in slot 2 try with 1 board in slot 3you could have a psu that is weak and will run a board.you could have a really bad board that is shutting down the psu.

### Reply 3:
Hi my S15 stopped hashing. It was working fine and then it quit and now it tries to start and shuts off (over and over).Here is the log I was able to get:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries<rest of post truncated>

### Reply 4:
Are you sure that this is the full kernel logs or did you just copy them partially? It must be show something about fan and chains like this logs as sample.Here is the log:Code:2019-03-01 13:26:26 <truncated> The avg rate is 28055 in 30 mins, PCB temperature between 28 ~ 68 <truncated> 27000ENV 12 FAN 4980ENV 13 FAN 4980ENV 12 FAN 3240ENV 12 FAN 32402020-03-01 13:41:43 <truncated> input temperature is not stable 1.0.ENV 13 FAN 3300ENV 17 FAN 45002019-03-01 13:57:00 <truncated> The avg rate is 27983 in 30 mins, PCB temperature between 30 ~ 69 <truncated> 27000ENV 15 FAN 4140ENV 17 FAN 50402020-03-01 14:02:06 <truncated> input temperature is not stable 1.1.ENV 13 FAN 5040ENV 17 FAN 3300ENV 12 FAN 3240ENV 12 FAN 49802019-03-01 14:27:34 <truncated> The avg rate is 27865 in 30 mins, PCB temperature between 28 ~ 68 <truncated> 27000ENV 12 FAN 3240ENV 17 FAN 5040ENV 13 FAN 5040ENV 17 FAN 37802019-03-01 14:42:52 <truncated> input temperature is not stable 1.0.ENV 12 FAN 50402019-04-22 10:03:48 <truncated> Entering low environment <truncated> 10:03:48 <truncated> bring_up_pcb_temp = 25, <truncated> = 27, ideal rate = 28000, AVG_rate = 268382019-04-22 10:03:48 <truncated> re_open_core start!<rest of post truncated>

### Reply 5:
Do you have a multitester? Try to check the voltage value from the PSU(it must be 12V power) if it shows no or low voltage then your PSU is broken. If you don't have a multitester then try this method below and it might be just a software issue.- First, run the miner and then hold the IPreporter button for 15 sec then release. It should be restored to the factory settings. Now, setup the miner with pools then test it again. Let's see if there are changes in the kernel logs after doing this.- Try to upgrade it latest version available from Bitmain(Take note it can disable the SSH access)- Refresh the miner by flashing it through an SD card with the SD card program recovery image. But it's not available yet on Bitmain. Try to contact Bitmain and maybe they can give you the SD card program recovery for this unit or try to contact taserz he might have an s15 SD card image.If these don't work you might have a broken PSU.

### Reply 6:
At this stage all fingers point to a bad PSU, however the kernel log is strange and incomplete, I would remove all 3 boards and keep only the control board to see if it gets to the line where it reports the control board status, I would also test a different LAN cable, of course all of this after having done a hard-reset on the miner and flashing another firmware version, I would also clean the PSU because there is a stange it's full of dust and gets hot real quick.Were you running this on a lower than 200v socket?

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23357,"Date: 2020-11
Topic: [Ebang E10.1] Decrease hash after upgrade to firmware 9.1.5.11
### Original post:
Hi everyone,I suddenly upgrade my Ebang E10.1 firmware 9.1.4.24 to firmware 9.1.5.11.bin on ebang website,after that it only work at 6.8TH (it must be 18TH normally), I do all the stuff like reset, factory reset, upgrade other firmware and still not work,Does anyone know how to fix this,Many thanks,

### Reply 1:
If you already did factory reset and didn't work try this method below.I don't have much experienced about this miner but I heard someone experience that their hashrate drop after upgrade to the latest firmware. And they try to change something like ""PLL"" and the performance was increased but everytime they restart the miner the PLL that he setup is turned back to the default setup.I don't know if it will but you can try it.You can find the PLL on the dashboard under system configuration it looks like this.Then get some idea from this post <link>

","[
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23370,"Date: 2020-12
Topic: ANTMINER S9 reporting extremely low hashrate
### Original post:
Hey guys, I've been running my S9 for about a month without any real issues. Only thing is that lately my pool reported hashrate will be anywhere between 1-12 TH/s. This issue is occurring with both Nicehash and Poolin. I've already attempted a soft/hard reboot, firmware reflash, and psu swap.miner status page: <link> advice this board can give me would be much appreciated. Thanks!

### Reply 1:
First thing you to do, avoid nicehash, at least while troubleshooting the miner, and then post the kernel log using the code functionCode:kernel log goes hereI also noticed that the runtime is only 22 mins in the image you uploaded, did you manually reboot the miner?

### Reply 2:
The screenshot doesn't show anything and it looks like the miner status report is showing fine with 2 hardware errors. The issue might be in the pool server or your internet, high ping or slow internet can affect your reported hashrate on the pool. So, try to use other pool servers that are closest to your location.Or follow my method to check the pool ping from this link below.- <link> use this as reference:

### Reply 3:
Another possibility is that 1 fan is dead. When I used to run s9's I came across this problem fairly often. Most often the exhaust fan dies but is seen still spinning - but only because the 1 working fan is moving air through it. 1 fan is not enough and every 1/2 hr or so the miners would restart after doing an overtemp shutdown.Fan5 is reporting over 30krpm which is obviously wrong...

### Reply 4:
I would keep this, at last, it's unlikely that OP is facing a connection/network related issue, and here is my reasoning:- Two different mining pools reporting the same problem- It was a sudden problem and nothing new (according to my understanding of his words).based on that, the issue seems to be constant rebooting, when the miner goes into a reboot cycle, the hashrate on the pool will be really low, this is the first suspect, what gives this theory more strength is the fact that the miner's run time is pretty small.

### Reply 5:
It must be the old firmware that does that? the recent firmware versions will not start hasing if both fans are not in great ""shape"".The 30,000 rpm it shows is kind of pretty normal for non-stock fans, i had the same readings on many used S9s, but your point makes sense, i would still check the fans, the miner seems to be rebooting and thus anything from a bad fan to a dirty psu will do that.

### Reply 6:
I like MikeyWith's theory so far. One fan broke in transit very recently so I had to swap out with an old one so I'll give the hardware a good once-over and update this thread once I replace fans or something.Sadly I just came back from weekend trip and I'm still having hashrate issues after leaving it on the entire time. @ thread, I already tried to reboot. The status page just happens to be after a fresh boot (my bad)Here's the log Thanks for looking into this m8sCode:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] Linux version <truncated> (lzq@ubuntu) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #90 SMP PREEMPT Thu Jun 20 15:01:47 CST 2019[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] cma: CMA: reserved 128 MiB at 17000000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 126976[ 0.000000] <truncated> node 0, pgdat c0629a40, node_mem_map d6bd9000[ 0.000000] Normal zone: 992 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000<rest of post truncated>

### Reply 7:
Everything looks ok in the kernel, all three hash boards show 63 Asics (which is how it has to be), although chain 5 might be the cause, but too early to judge.You forget to mention a very important thing. When you came back from your trip, was the miner run time equal to the time it was left to mine? in other words, did it reboot?

### Reply 8:
Ah, well you see - There's no sign of rebooting where I'm sitting. That is to say the miner sounds normal and the logs read fine, aside from the occasional DHCP check. However, my pools are telling me that it's rebooting every 5 minutes or so. Also in the middle of the night it might go through a cycle or two where it reboots 2-3 times in 5 min.

### Reply 9:
What pool exactly telling that it's rebooting every 5min?Are you still mining on Nicehash?Try to mine to another pool like ViaBTC or try the ASICboost pool on Nicehash it looks like <truncated> can replace EU to USA.Or try other pool that support ASICboost.I remember someone having the same issue before that every 5 minutes the miner stop mining and solve his issue after switching to ASICboost pools or any pool that support ASICboost.

### Reply 10:
Could you unplug chain 5 as I don't seem to like thi<rest of thread truncated>
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23210,"Date: 2020-02
Topic: Randomly dropping one board on s17e
### Original post:
Much better to put the whole kernel logs on pastebin.com and post it here or use the insert code from message box here and post it hereIt looks like this:or use the buttonThen postAlso, make a screenshot of your miner status and post it here.Antminer has high temp protection mode that might be the cause of your miner stop mining. If it just a one board getting 0 asic and all miner stop then it was a temp protection mode but if it still running with drop hashrate you might have a defective hashboard.However, if you can put all of your kernel logs and some screenshot here maybe we can find what is the cause of hash rate drop.

### Reply 1:
I see your edit in OP about the bitmain solution that's what I was going to bring to the table. I generally lean that way especially when it's sporadic in dropping off, that or something got sucked into the fans and may be causing an obstruction. If you've gone through and secured all cables and made sure the path for airflow is clear, you should definitely get a ticket started, might as well send them the same log you've posted here. That way you can tell them you've already tried their initial troubleshooting and give them something to look at. Edit: Does this model have the LP mode? If so have you tried running it and does the same problem occur?

### Reply 2:
It seems a power failure the PSU not giving enough power or control board failure. Since this miner is sealed I don't recommend disassembling the unit because it's still under warranty. But you can try this method below and maybe any of these might solve your issue. Try these 3 possible solutions.- Do a hard reset (restore default). You can do this by holding the reset button for 5 to 10 seconds then release. After that test it again.- If the issue still occurs try to check the miner's configuration for work mode something like that where you can choose between (low power, normal and turbo mode) if you found a working mode try to run it at low power mode if the miner become stable try to set it to normal mode then test. If stable stay with that setting.- Try to flash it with the latest version through WebGUI you can download the firmware from here <truncated> run and test the miner. If all of these don't work you have a defective unit you will need to send it back to bitmain for repair/replacement.

### Reply 3:
Hey gang.On my s17e 64, it'll run just fine for about two days, then it'll drop a board. I do a reboot and it recovers fine. Runs another 2-3 days, and drops a board again. Still under warranty. Any ideas if this is something I can remedy, or ship it out for repair?Here's a sample of the log, when running just <truncated> 22:30:35 <truncated> Set to voltage raw 1800, one step.2020-01-25 22:30:52 uart.c:69:set_baud: set UART baud to 1152002020-01-25 22:30:59 <truncated> Chain[0]: find 135 asic, times 02020-01-25 22:31:06 <truncated> Chain[1]: find 135 asic, times 02020-01-25 22:31:13 <truncated> Chain[2]: find 135 asic, times 02020-01-25 22:31:13 <truncated> Set to voltage raw 2000, step by step.2020-01-25 22:32:00 <truncated> set uart relay to 0x3900032020-01-25 22:32:01 <truncated> Set LDO to 0x2000203But when it drops the one board, the italicized line reads: Chain [2]: find 000 asic, ....I'm not seeing any errors pop up when that occurs. My other 3 s17's have been running like a Swiss clock (Pro50, and two S17+)Edit: Bitmains trouble-shooting guide (mostly related to S9's) shows ""make sure cables are good and properly placed"" as a solution.

### Reply 4:
Thanks, here we go... couldn't get the whole page to copy, but I got the bottom majority. Enough you can see the reboot I did just before my original post, and the recovery to normal, and to now, where it dropped a board again.Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash ta<rest of post truncated>

### Reply 5:
No power modes at all on the e and + models. Was hoping they'd do a firmware update with those options.I'll do some screwing around in the morning, open it up and <rest of thread truncated>
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23211,"Date: 2020-02
Topic: Incorrect firmware updated EBang
### Original post:
Dear expert,I did wrong model firmware update to EBang ""E9.3"" . I did update E9.3 by E9.i firmware. I try frequently to update the miner to it's firmware(E9.3) but any changes happens. Please help me to fix it.Thanks in advance.

### Reply 1:
Have you tried to reset it to factory default? You can find it on the maintenance tab.Also, check the front of the miner if it has a reset button. As I can see there are two holes on the front check them the one button must be a reset button. If one of them is a reset button try to hold and press the reset button for 15 seconds and then wait a couple of minutes. After that, flash the firmware back to EBIT 9.3 firmware(Make sure it's the latest version) then test it again.This should be the right firmware ""E9.3 Firmware version number: Firmware V9.0.0.23.tar""

### Reply 2:
Dear BitMaxz,Thank you for your replay.I did not only reset it to factory (from maintenance menu) but also by pushing the reset button. I can change it's firmware version to any version of E9.I'S but not to E9.3 (as you append it) .

### Reply 3:
Well, if it doesn't work I think there's no solution yet that can solve this issue. When searching about ebang machines related to your issue the same issue as yours I can't find that they solve or revert back their firmware to original firmware.What I think is try contacting ebang support and maybe they can help to solve your issue.You can contact them with their skype.skype: <truncated> lynnnesnayskype: tammyni03The only thing that I notice about the firmware of E9.i and E9.3 is they have different firmware extensions. E9.3 extension is .bin and the E9.i is tar.gz. So I think you can bring it back to E9.3 if you can find a firmware with tar.gz extension.Here check this one I found my old download history of this firmware - <link> might be a 2019 firmware as the download date. The name is ""E9.3 Firmware version number: Firmware 9.0.0.20"" so this is the right firmware.I hope it will work if not better try to contact them.

### Reply 4:
Fixed your code.Gave you a merit for your follow up. Simply make some more posts and you will become a junior member.

### Reply 5:
Dear BitMaxz,I updated the out of ordered E9.3 by ""btc_upgrade _9.0.0.20.tar.gz"" and the problem is fixed.Thank you for your direction.

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23246,"Date: 2020-04
Topic: Google Chrome Access Locked Miner Features
### Original post:
exactly you can also delete the whole phrase too, deleting all none containing display phrases will show all settings (i said delete all to make it easier for users and not flood them with information and blur their thinking) anyways they can only edit after only the settings they need and if i'm not wrong there is around 5 nones to be deleted you can delete just the (none) word only or delete <truncated> and you can replace none by (all) too everything will work hope my tutorial was clear so everyone can benefit from it and yes mikey you're right i am speaking about antminer S9 (53W/TH Efficiency)

### Reply 1:
How To Change Antminer Locked Settings (Fan+Freq+Temp Override) Running Official Antminer Firmware By Google Chrome, Just Follow Those Simple Steps :1- Boot Your Miner2- Go To Miner Config Page3- Right Click Anywhere On The Page And Select Inspect (Or Press Ctrl+Shift+i)4- Search For ""none"" In The Code Using CTRL+F5- Your Aim Is To Find This Phrase In The Code And Delete it wherever you find <truncated> you can edit code by double clicking then when selected press backspace or del.6- When All Phrases Deleted Single Click Anywhere In The Code Then Close The Inspector Hidden Settings Will Appear7- Edit The Settings To Your Preference Then Click Save Your Miner Will Reboot With Your New SettingsP.S: BE CAREFUL Not To Over Heat Your Miner And Keep The Over Temperature Protection Always On, Fan Changes Will Take Effect When Control Board Boots ~2 to 3 Minutes From When Plugged Enjoy And Happy Mining !Currently I Am Working On Antminers and i succeeded to raise their efficiency to 53W/TH (Default Was 90W/TH), And working on miner management and locked settings access software (opensource and free), next step will be DIY water cooling system for S9, all info will be shared with community <rest of post truncated>

### Reply 2:
Well, not exactly that, you have to delete only ""none"" or "":none"" whichever you prefer, but certainly not the ""display"" ( you can delete it but not needed), I would also add that you don't really ""Delete it wherever you find it"", that will be both a waste of time and effort, as it will show you all the things you don't need.simply put, you just need to access the class code:delete the ""none"" from the this line:Code:<fieldset class=""cbi-section"" <truncated> <truncated> then only show whatever you need, if you want to control fans, then edit search for fan_ctrl ,.Appreciate your efforts, Looking forward to this:And just to make things clear, you mean Antminer S9 judging by what you wrote in the other thread, am i right?

### Reply 3:
Actually you are right about this, you can delete the whole part and it will work, I have edited my previous post, the reason why I suggest not removing everything it creates confusion, for an instance if you delete the display:none from this partCode:<fieldset class=""cbi-section"" <truncated> style=""""> <img <truncated> alt=""Loading"" <truncated> <span <truncated> for changes to be applied...</span> </fieldset>it will show you ""waiting for changes to be applied"" which gives you a false positive that your settings were actually saved even before hitting the save button, the update notifications should only appear when you hit save as it changes the display setting in the above-coded part, to someone who has done this a few times, no problem, in fact, your way is way faster than mine, but I wouldn't suggest it to newbies for their own benefit.

### Reply 4:
This is an old method to show up the hidden feature for antminer. And there is another way to display the hidden feature by using stylus. The method can be found here <link> follow the guide under this post below. - Enable extra feature without editing CSS

### Reply 5:
This method will only work for S9 or older models, maybe S11/S15 too, but sure not on T17, S17, T17+, T17e, S17pro, S17+.Unless they updated their code to alter this piece of the <truncated> class=""cbi-section"" <truncated> <truncated> extension (Assuming it has no security threats) is the easiest way to go about this for those who have a lot of gears to work with, pretty neat way of doing things, to say the least.

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23232,"Date: 2020-03
Topic: Flashing S9 Control Board Without SD
### Original post:
Hey guys, I have a bunch of S9's with security firmware that we are trying to load with another firmware, but unfortunately we've found most of these machines to not have the SD chip that allows flashing (see picture below). My question is how do I flash this thing if I can't SSH, load through the web UI, or flash via SD?<link>

### Reply 1:
Is not possible to flash this by SDCARD , so lost one chip on control board ...So , if you shearch on this forum, you find solution !!!<link>

### Reply 2:
Well first you need to find a way to restore SSH access, one of the methods i know involves downgrading to the earlier firmware from 2019 (may?) from Bitmain, and then executing one of the exploits involving the html server. Once you restore SSH, you can proceed to liberate your miner.I know you can install the Free and Open Source Software Braiins OS using this method (using a simple python script). For other firmware it depends.

### Reply 3:
It won't work, that missing IC is responsible for the flash, regardless of the control board.Op depending on the Firmware version you have, unlocking SSH access might be very easy to do, Asic.to has a nice tool for that > <link> and you can unlock all miners at once.Once you unlock SSH and remove the signature, you should be able to install any firmware you want.

### Reply 4:
To flash it through the SD card you will need to download the t9+ program recovery from Bitmain. You will get the SD card program recovery from here ""T9+ Program recovery"". You don't need SSH access to make it work what you need is to move the JP4 jumper to the right position to make it work.The whole procedure how to flash it through SD card can be found here ""S9 series (S9, S9i, S9j, S9 Hydro) Control Board Program Recovery"".With or without SD card IC/Chip it should be work except for the c5 control board. So Sd card flashing should be work but if it's not working you will need the USB to serial converter to connect directly to the control board. You can follow the guide from here ""Rescuing a bricked T9 (and S9?) Control Board - HOWTO.

### Reply 5:
If it will not work why the sd card slot is there? What is the purpose of having an sd card slot on the S9 control board if it won't work?There is an s9 miner made without an SD card like the CRT0301 model so that the one does not have IC behind the SD card slot should be work.I'm just comparing them on Mobile clones that don't have IC behind the SD card slot but still, it's working fine.Why not, let's wait for him to test to verify since the line of the SD card slot is on both sides and maybe the missing IC is not for SD card.

### Reply 6:
This one of so many things that bitmain does for no logical reason, i am on the same page with you here, you put an Sdcard slot for what?? But with that missing IC it won't work, the same thing happened to someone else before, with a bit of digging you will find it i guess.With that being said, he should try a few times with different sdcards, chances are slim but worth it, if it doesn't work, he has to work around it by following the other possible ideas presented here

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23328,"Date: 2020-09
Topic: Antminer S11 Suddenly not working
### Original post:
Hallo everyone,relatively new to bitcoin mining, i purchased recently 4 miners S11 from bitmain.For 3 Months now everything ok, hashing like a pro...But suddenly two days ago i woke up, found one of those not hashing at all, there was blank indication in Hardware version and in BMminer version.Miner Status page is everything 0Green light flashing as though all were ok, but then Red light comes in and rebooting. And the same cycle continuous...Kernel as followsCode:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000 Normal zone: 480 pages used for memmap Normal zone: 0 pages reserved Normal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated<rest of post truncated>

### Reply 1:
Have you tried swapping the PSU from another miner?

### Reply 2:
It looks like there is an issue with the PIC on chain[0] (the board that is plugged into connector J1 on the control board). I would try testing the miner with that board disconnected, if possible, to see if that is what's causing the miner to keep rebooting itself.

### Reply 3:
It looks like this one has a program issue. Code:main.c:2178: Check chain[0] PIC fw <truncated> to this two <truncated> chain[1] PIC jump to appmain.c:2178: Check chain[1] PIC fw <truncated> chain[2] PIC jump to appmain.c:2178: Check chain[2] PIC fw version=0xa4One of the hashboard might have a problem related to the program or hardware. Can you try to swap the cable(18 pin cable) from another hashboard and check if there's changes on the kernel logs.Or you need to test and follow what tim-bc suggested. If its a program issue you will need to do is to reflash the hashboard with working hex file but since your miner still under warranty much better to don't touch anything from your miner then contact the bitmain support and send it back for warranty repair.

### Reply 4:
Thanks a lot for your replies,the advises you sent will be very useful i think, first of all because the miner has warranty i will contact Bitmain support for instructions, and as soon as i have news i will update.If the problem is resolved with common troubleshooting i will write here exactly what was faulty. Thank you.

### Reply 5:
Waiting for bitmain to solve your problem is a waste of time, all they will tell you is "" reboot,reset"" and when they get tired of your emails they will ask you to ship the gear back to them, so while you do all that try everything that doesn't void the warranty on your miner.This could very likely be power related, if trying a different psu from abother miner won't void your miner ( probably won't, but dyor) then that would be the first thing i would do, also check the data cable on chain 0.

### Reply 6:
Hi Everyone,Regarding the Problem i did the following:I left the miner switced off for 5 Days, then when i did had time, i powered on the miner in low power mode and everything worked!I then tried putting it back to normal power mode, but miner restarted every 5-10 minutes, and i discoverd in Kernel Log the <truncated> board[0] voltage: <truncated> min voltage: <truncated> iic_index for voltage[78] = <truncated> voltage_tunning, set to 10.750000, <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> board[1] voltage: <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> board[2] voltage: <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> Couldn't hear AN voltage response from <truncated> 0000 ff ff ff ff ff ff ff ff ff <truncated> board[0] voltage: <truncated> min voltage: <truncated> iic_index for voltage[78] = <truncated> voltage_tunn<rest of post truncated>

### Reply 7:
I thought that you already tried it on the low power mode as you said before and didn't work?Anyway, it looks like the Max PCB temp of your miner reach 100c according to your logs.According to Bitmain the Max PCB temp of s11 is 95 degrees so it means the hashboard exceeds the maximum PCB temp that is why the miner keeps restarting due to high-temperature protection mode.The other reason is that the FAN PWM shows zero ""0"" possible that the fan is not detected that is <rest of thread truncated>
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23266,"Date: 2020-05
Topic: New build - airflow advice
### Original post:
Silly question.Even if you put it in a fridge (theoretically) it won't run cold since the chips themselves will produce more than enough heat to fight the external cold temp.Too much airflow won't cool-down a room that much anyways.You can copy mikeywith's mining farm set-up: My ""mini"" mining farms , set up + wiring

### Reply 1:
Just a reminder, my set-up is far from perfect, however, after all these years I have come to realize that heat isn't really the main reason these gears get toasted or become useless, they either become obsolete due to profitability or fail due to bad ""luck"" or quality if I may call it. if you look at my topic which nc50lc quoted, I have two farms (currently building a new one), one had a very poor airflow, miners did run pretty hot almost all summer long, but the effect of that on the lifespan of those miners was almost NOTHING.Add to that stories I have heard from various miners, some people who had a mediocre cooling reported less failure rate compared to those running their miners in high-quality data centers, I know many people who ""go by the book"" will criticize me for saying this, and they have the upper hand because their point is ""scientific-based"", I am telling you this because I believe you shouldn't go to the extreme about airflow.Now the numbers:Phill thinks that S17 move about 500cfm of air, assuming you have 5 of them, you will need to bring in 2500cfm and exhaust a little more than that, later on, if you think the airflow is not sufficient, you can add more fans.

### Reply 2:
Thank you for this. It's actually 25 units in total, however I opted for Whatsminer M31S+ in the end instead Antminer S17+.I've ordered 2 x fan controllers so I will be able to control the intake and exhaust fans (on the rooms) independently to get a good balance. In hindsight perhaps it was overkill!

### Reply 3:
I am in the process of setting up a small farm in the basement of my business premises. I am proposing a split-room setup with around 25-30 units, most likely S17 73 TH/s.The hot room will be approx 6.5 cubic metres and sealed against a brick wall, miners exhausting into it obviously, and with 2 x 450mm commercial extraction fan mounted in the wall, venting Directly to the outside (with louvres). The fans extract a total volume of 9600 cubic meters per hour, or 2.6 cubic meters per second. This means the volume of air in the hot room will be entirely replaced once every 2.5s, in theory at least.Initially I thought this should be fine however Im wondering now is it too much? For example could it cause a vacuum type effect and over-speed the miner fans? I tried to find some stats on miner cooling airflow but couldnt find anything. The airflow of the mines will of course counter-act the vacuum of the extractors to a degree.I could install a filtered vent into one of the side walls or roof of the hot room if this would be better than having it sealed, or alternatively fitting a speed controller to the extraction fans is also an option.Can anyone offer some advice on this please?Giving <rest of post truncated>

### Reply 4:
Running cold is a term for something running below optimum temperature...

### Reply 5:
yeah a pair of these. will cool 5 s17pros set to high<link> FlowModel # EGV64.3917(120)1600 CFM Power Gable Mount Attic Fanyou can. do 2 simple intake vents with these filters<link> are washable that saves big money.two out put fanstwo intake ventsyou can do 5 s17 pros maybe six.edit I just read your postas long as you filter the intake you should be good.those machines will do about 300cfm x 25 = 7500 cfm. can you link the fans. as your method of cubic meters an hour is not as common as cfm.2.6 cubic meters a second is 2.6 x 3.1 x 3.1 x 3.1 x 60 = 4650 cfm.so. you said you have 2 fans correct?IS it 1 fan in 1 fan out. or 2 fans out. with passive vents and filters.if you are 1 fan input to 1 fan output. you are no go.Let me check math againcorrection2.6 x 3.3 x 3.3 x 3.3 x 60 =. 5600 cfm. still short of 7500 cfm if you are push pullinput[5600] >>>>> gear >>>>> output [5600cfm]. is not good enoughpasssive vents with washable filters. >>>>>>>> gear >>>>>> output{ 2x5600 cfm}. should work.

### Reply 6:
Unfortunately I have ordered the fans already, however I have 4 in total. Here is the link to the fans:<link> (18"" / 450cm version)The fans are rated at 4800 Cubic meter per hour = 2825 CFM each.The plan was to have x2 fans input and x2 fans output to give the <truncated> >>>>> gear >>>>> output [5600cfm] (as per your diagram).I do have the option to use all 4 fans on the output / exhaust as <truncated> vents with filters] >>>>>>>>>>>>>>> gear >>>>>> output [4x2825] which will give 11,300 cfm extraction.

### Reply 7:
Too cold? No. Best time of year here in North Dakota is winter. I leave the window open in my garage for that nice -10F air.""Vacuum-type effect"": I'm not an HVAC expert however contrasted to my setup yours<rest of thread truncated>
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23350,"Date: 2020-11
Topic: APMinerTool Compatability with 19 series
### Original post:
My APMinerTool doesn't register 19 series units. There doesn't appear to be an option in the settings to fix this. Am I missing something?I'm using V1.0.11 which is the latest available on Bitmain website.

### Reply 1:
I think you forgot to use the IP report button to be able to detect the miner try to press it for 3-5 seconds if it can detect your miner.Or read the whole APminer tool User guide below how to use it.- <link>

### Reply 2:
That doesn't sound practical... the 9 series and 17 series just show up automatically. Will take a look through the manual

### Reply 3:
I agree, after all, if this was really the issue - you wouldn't be asking such a question, your question would have been something like "" S19 isn't showing the local network / can't find S19's IP address"", but since you are not asking these questions, it means your miners are indeed receiving IP addresses and thus the IP report button will be of no use IMO.As far as I know, nobody here has received their 19 series gears, also the chances that you may find someone who has them and does actually use APminerTool are slim to nothing, I think you should just contact Bitmain support as this is most likely a bug in the tool or the miner itself.

### Reply 4:
I wonder what has changed in the S19 series as far as the <truncated> level is concerned, I mean it's not like they upgrade the tool after every generation, also other software like AwesomeMiner do work on S19 as far as I can tell, also the BTCtool you mentioned above, I highly doubt any upgrade was needed by these tools, it must be something wrong with the APminer tool itself, someone should send them an email and see what they have to say.

### Reply 5:
I've tested on my S19-Pro and no it doesn't work. Just shows as Status: NoneWhat does work, and does essentially the same job is BTCTools-v1.2.9.1 from btc.com (which is owned by bitmain anyway)URL is here: <link>

### Reply 6:
You'd think with it being Bitmain's own tool they would a) have tested it with their current range, b) uploaded an update if it required!

### Reply 7:
Its always been one of the shittier of the tools out there, I've always used the BTC.com tool

### Reply 8:
BTC.com is owned by bitmain as well so maybe they have abandoned APMinerTool and started to focus only on BTC Tool? the latest APMinerTool version 1.0.11 has been there for 2 years if I am not mistaken, so there doesn't seem to be any upgrades of any sort regarding that tool.

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4009,"Date: 2020-08
Topic: Refund lists for round 17 of  Dz Coop.
### Original post:
name: tripppnshares: 3request date: 2/14No refund yet.I really wanted this one to work too

### Reply 1:
<truncated> 1 <truncated> 13th <truncated>

### Reply 2:
floatyfish1 sharerequested on 2/11/14No refund yet but Bobsag3 said (as of today) that it might be 2 or more days before they get sent out. I'm confident that they'll pull it together.

### Reply 3:
Requested 2/7, 5 shares, not received.

### Reply 4:
<link> 8, 5 shares, not received yet.

### Reply 5:
<truncated> 3 <truncated> 8th <truncated>

### Reply 6:
it would be nice if you can sort the list in chronological order as well, just to see if he is going by pm date really or someting else.thanks for this thread

### Reply 7:
Danleuthner 23 shares GB17 requested Feb 10th via bitcointalk, PM and a ticket in the DZ site.

### Reply 8:
refund requested on Feb 14,Feb 13,Feb 04. Not being replied yet.txid: <link> #856Please help me with the refund.Thank you.

### Reply 9:
I can't login to request a refund. I get ""Email not found"" error with every browser.It's definitely the only email I used as I got an order confirmation email. I emailed <truncated> (forwarding my confirmation email) in the hope that someone would get my email and refund me.Please help me with my refund too. My order number is 1471.Thank you!

### Reply 10:
2 shares 12 -feb

### Reply 11:
send a pm to bobsag3 .= if you are able to send one do it on this site. bitcointalk.orgif you are locked out of pm's on this site due to newbi status. :list your order number 1471list the payment tx idlist the shareslist the refund btc address put that in this thread. quote this post.

### Reply 12:
I purchased a share from someone else, which was completed by thomas_s so I don't really have an order ID, so I replied with my refund request to thomas_s's last PM which was confirming that the share was transferred to me, and CC'd bobsag3... hopefully that is enough....

### Reply 13:
Order #13121 SHAREPayment Address on file <truncated> asked on the 12th<link>

### Reply 14:
Asked on 2014-02-12 Received my refund today. That's 1 week when they did state it could take longer. Difference between what I spent and what I received was about 8% of my BTC investment instead of 1.5%. Not complaining, just reporting: It was only 2 shares, not a lot of difference here. For those receiving bigger refunds where that kind of error may cost you significant BTC, you may want to check the math. However, there may have been some kind of fee from their service processor for the orders making this refund accurate.

### Reply 15:
I got destroyed on trans fees on some of them... but it shouldnt have been off by 8%

### Reply 16:
Got mine today, thanks Bobsag3

### Reply 17:
I will post updates when i get back to my philipma1957 computer. but it looks like some refunds were made today. oh to the shortchanged person 8 % vs 1.5 % . I thought the same thing with my refund but I did my calculations in fiat. not in btc.I paid in 910 in fiat and got back 823 in fiat. but if i did an actual btc in and btc out. it was about 98 percent and sice there were 7 shares in 5 orders there could have been rounding errors.

### Reply 18:
No, it was most definitely BTC values. Taken to full decimal places and no rounding, 8.088% restocking fee. If I make the .0005 transaction fee my responsibility that becomes 7.8882%. The total amount I am short, again without rounding, is 0.016485898. This is BTC in, BTC out. I even double checked my emails with the blockchain.info transactions to make sure the amount was correct. I'm not complaining, just warning that people should double check.

### Reply 19:
They said it was whatever your payment method. Most people paid in BTC (either directly or by converting USD). I didn't know there was even an option to pay directly in USD on this one but maybe there was. So if you paid in BTC and didn't get the same BTC back (less ""restocking"" fee), you have a valid complaint.

### Reply 20:
Strange. I will resend the difference, thanks for catching it.

### Reply 21:
I sent out a few pms and I am updating thread. a few names came off the refund asked list to the refund paid list.most of the people pm'd on the list have not replied yet. I realize that those being paid may hesitate to let me know and of course those still waiting will be more likely to say where is the btc ?so far the thread is good on 'no hating'thanks for that . but if you get a refund please post.

### Reply 22:
Got a pm from:TheBison refund of 11 shares was donebutdBell who is with TheBison did not get his 12 share refund. Thanks for the PM replies.

### Reply 23:
I listed another refund request.and bobsag3 is working his way down the list.<link> post if you get a refund. thank you.

### Reply 24:
I got my refund today. Thanks.

### Reply 25:
thanks for update

### Reply 26:
Anyone get their refund in the past couple days?

### Reply 27:
Negative ghost rider... still <rest of thread truncated>
",[]
23294,"Date: 2020-06
Topic: Antminer T17 will only hash on 2 boards
### Original post:
Hello, I am getting an error in the kernal log of my T17 that reads <truncated> Wrong temp sensor type, chain = 0, sensor = 6, type = 0x0, retry."" After this, the miner powers down all hashboards and will not mine. I have swapped power supplies, with a known good one from another T17, as well as the control board. I have figured out, that if I disconnect the board chain 0, it will boot up and mine just fine at 27T with 2 boards, so it is obviously an issue with this one hashboard. My question is, is this something I can repair myself, can I replace this ""temp sensor,"" or do I need to send it in for repair? Are there any other suggestions I can try? Thanks!-James.

### Reply 1:
Welcome to the club<link>

### Reply 2:
First thing you should post the kernel log, the complete kernel log while chain 0 is plugged in, use the code function to paste the kernel log like soCode:kernel log goes hereA wild guess based on what I already know, you have one or more heatsinks/chips with bad soldering which has lost contact to the board, it causing a problem in the electricity flow within the board and stopping the temp sensors from working, the control board ""thinks"" all 4 temp sensors are bad so it does not allow the chain to mine for safety purposes.What to do and how to fix it is a different topic, i will guide you through it once I see the kernel log.

### Reply 3:
Hey thanks for sharing this, very much appreciated!

### Reply 4:
Don't forget to start cleaning first before you touch any components from the hash board because sometimes the sensor giving false temp due to dirt, dust, and corrosion.Cleaning them first, if you have a thinner, Laquer Flo uses a brush to clean all parts of the hashboard not only the temp sensor.Also, if you have a hot air blower, you can heat/reflow the sensor parts if the cleanings don't work or if you don't have hotair you can use the oven to reheat the whole hashboard. Get the idea from this video <link>

### Reply 5:
You will need a few tools and a bit of skill for obvious reason, honestly it is only worth it if you plan on doing it more often, but investing in the tools just to fix a single board might not make any sense economical wise, with that being said if you own a few 17 series it is only a matter of time before the same problem happens to other boards, but let's hope your luck will save you.Quote my post or mention my name when you post the kernel log so that i get notified about it.

### Reply 6:
Thanks so much for your reply, and willingness to help me, I truly appreciate it. I will get the full kernel log within the next day and post it here for you to see. What you're saying about the heatsinks/chips soldering makes good since, hopefully this is something I could re solder myself if it is indeed the case. Thanks again!

### Reply 7:
This confirms my previous wild guess, you have a faulty heatsink/chip, don't let the kernel log deceive you, the chances of 4 sensors going down at the same time are less than your chances of hitting a block with an old Nokia, can you take out the board and apply some pressure on all the heat sinks and then put it back in the miner and power it on, this might (with a low probability) fix the issue for some time, but eventually, it will stop hashing again, one or more of the chips or heatsinks need re-soldering sadly, if you are interested in doing so I can post some tutorials and the tools needed for the task. Also, you could try a custom firmware to see if you get any luck, some people reported some positive results in that regards, use Asic.to for testing, I guess with that firmware if it manages to read 1 sensor at least, the board will hash away with whatever asics it finds, sometimes once you get the board to work for a while on different firmware, going back to the original firmware will make it work too, as strange as it sounds, it happens.

### Reply 8:
Okay, finally got around to hooking up that third chain, and getting the kernel log. Here it is:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024<rest of thread truncated>
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23190,"Date: 2020-01
Topic: T3-50T amperage on one of my board block at chip UT1
### Original post:
I tried to repair the first board on my T3 and my signal SDO doesn't go through chip UT1.I change the chip 3 times but the problem remain.I notice that the amperage keep rising when the board get hotter and stop at 10A after that all signal go trough chip UT1 but they are messed upcan anyone help me on this?

### Reply 1:
How are you trying to change the chip? What tools/heat <truncated> masks?

### Reply 2:
Well I take the defective board out of the miner, take all the heat sink off the board, heat both side of the board at 300 degree and then i can change the chip i need to. I dont know if this forum will be helpful with that kind of problems.

### Reply 3:
Ok. If it is a QFN chip I have had problems in the past with them seating properly on the pads. Solution was a fine layer of flux first, then chip. Zephlux seems to work pretty well.Some of us have experience with surface mounted repair.

### Reply 4:
Always doing that but one thing I was doing before was adding tin on my chip before soldering it to the board. Now i just dont and it help a lot with that kind of problems.

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    ""hardware_name"": ""heat sink"",
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10909,"Date: 2020-11
Topic: Bitmain Announces the Antminer R4 and APW5 Power Supply, Designed for Silence
### Original post:
Dear all,We are pleased to announce the Antminer R4 and APW5 power supply. Both have been meticulously designed for silence in the home environment.Sales start at 23:00 (GMT+8) on 29 August 2016. Click here to learn more.Happy mining,the Bitmain team

### Reply 1:
The link is working ok.Nothing about the warranty though.Is the warranty 90 days as usual?Will the price be 1000USD for the R4 and 300USD for the APW5 like in the product pages I saw?Mining software is most likely Cgminer -fork ""BMMiner"" like with the S9.

### Reply 2:
Weblink is down.Warranty? (if any)Cost?Miner software?

### Reply 3:
If the specs and everything are true, then this could actually be a viable miner, if they don't have cooling problems with all the chips. I do like the rack design, and this could be a great miner for servers and homes alike, if only they provide on time and the first batch won't be grossly overpriced like most of their miners have been, and if they don't somehow run out of stock and turn the prices up... They seem to be looking to expand their customer range with quiet miners; my family doesn't trust bitcoin and thinks it's all a acam, so I run my miners at my own house. The hashrate and efficiency is actually pretty good, considering most of their specialty products have been older chips.

### Reply 4:
So, it's about the same power draw/Ghs as the S9, and you get a little more bang for your buck (the current batch of S9 goes for $1600 hashing at 12.93 Th/s)

### Reply 5:
pricing... i think most will be upset but it's gonna sell like hotcakes! nice & innovative design but fan replacement will be pita. no aftermarket that can be sourced easily.

### Reply 6:
this power supply can power 2*S9 in 220V ?

### Reply 7:
seems interesting although i have no current plans to buy any.one thing from the official page that stikes me odd: <link> show it in a living room. seems pretty fugly to put in a living room, you know, with the psu and wires and such

### Reply 8:
So is the PSU included?

### Reply 9:
Just gotta hope the guys at corporate don't look too closely at bmminer and realize it's a potential liability being a blatant closed-source fork of a widely-known open source project.

### Reply 10:
miner software authorship and/or whether bmminer is a clean re-write of CG miner aside -- I've been waiting to see something like this from Bitmain or others. Long over due. Give it a snazzy looking case to look like AV gear and they will have a winner for the techno Bling crowd.Reason: I'd bet beans to btc that they are eyeing the large department store market. More specifically the ones in Asia as a whole at least to start.Their main hypermarket stores to a Western eye are -- insanely huge. Rather like department stores used to be before malls became the rage in the 1960's. Think Walmarts, large furniture/bedroom store, massive consumer electronics sections, groceries and eat-there, you name it, all together. The one I visited in Korea (I think was a Lotte Mart in Daegue) even had their own moped and car dealership inside. All in one massive 8-story building.In late 2014 before he cut all communications, Joshua Zipkin owner of AMT (now aka Joshua Alexander) was talking about him drumming up extreme interest from a Korean chain for his last-ditch efforts to keep AMT alive. Well at least be able to finally dump the scads of A1 chips he had... It should be in the Skype AMT room chat<rest of post truncated>

### Reply 11:
They put a year warranty on these at a year ROI and I'd take a chance.....90 days ....ouch.....just saying...(would make a fine space heater for the winter in the basement)

### Reply 12:
I'd think that CK has decompiled it and checked. Has he said anything specifically on the matter?Giving it its own name and ergo claiming ownership goes way beyond being a fork and if the case then CK would be screaming about it from the rooftops.Just using some of/maybe most of the API's for CGminer and CKpool which have become the defacto standards for pool/miner operation doesn't make bmminer a blatant copy. BFGminer is similar in that is uses many CGminer API calls but it is certainly not a fork of it.

### Reply 13:
Last I heard CK's opinion on it, BFG started as a fork of cgminer and stole a lot from it. Maybe that's changed, I dunno, but he wasn't happy.Kano has said a lot about bmminer, and some folks have run string tests on the compiled program and found its contents were nearly identical to cgminer. Given Bitmain's penchant for doing as little work as possible to produce a functioning product I'd be surprised if they wrote their own thing from the ground up, especially since it was built for basically the same hardware they've already had a crappy fork of cgminer on for about two years.

### Reply 14:
Seems interesting to me. I liked the S7-LN miner aside from the crappy used S2 power supply that they <rest of thread truncated>
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23224,"Date: 2020-03
Topic: How to set static fan speed for S9k only
### Original post:
Nevermind! I got it to work. maybe I didn't hit save and apply the first time, that cycling from 3k rpm to 5k rpm and back is WAY worse tan just leaving it at 5k! Thanks again for the tip!

### Reply 1:
Confirmed to be working on Antminer S9SE !! Make sure to save settings and reboot system afterwards. It will still boot up at 100% fan speed but will decrease according to configuration once it starts mining (about 6mins in the S9SE case)Thank you!

### Reply 2:
I really have no idea why did I only include S9k in this topic, although I have tried it on S9e and it worked, anyway, now that you mentioned it, I have edited the title and included S9e.Rebooting the system is not required to save the setting, it's only important to actually activate the settings, as for the 100% during the boot, it's normal and an important procedure to confirm that the fans can actually hit x RPM.

### Reply 3:
Confirmed and Thank you so much! Fan control working great!

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13642,"Date: 2020-01
Topic: Firmware for S17 - 85th/s and T17 - 65th/s T17 down to 45w • Asic.to The Moon
### Original post:
Funny enough not a single person has complained about a damaged machine. But there is a disclaimer and built-in safeguards with this firmware to prevent it from overheating. if someone throws a stupid high voltage or frequency and cooks their machine that is their own doing. There is a warning in this thread and on the download page that you can damage your machine if you push them too far. There is even a disclaimer about not making your frequency range too large from chip to chip with manual tuning. Also, your account is old. You made no post all of 2019 except for this comment you cross commented. You never mentioned buying an asic, antminer, or any of the current-gen miners. Yes, I went through your full post history and it looks like you use to post about gpu rigs only. So I have a feeling you are just spreading a warning because you used some other firmware that had issues or this is something else....

### Reply 1:
Been running custom firmware for over 2 years. As long as you get a good one I have actually been able to extend the life of my miners due to being able to run it cooler and use less electricity.

### Reply 2:
I've also had some dead boards at recommended settings. I've been very careful and understand the risk. I wouldn't have bothered posting about it because I know their can be consequences. What the other poster stated was true, although it has been a small number in my situation. To be clear I'm not blaming or crying, I know what can happen the minute I flash a aftermarket firmware.EDIT: I'm trying the firmware on S17 56T, S17 50T Pro, S17 53T Pro

### Reply 3:
So after you using a bunch of different firmwares on different units (judging by your previous posts) you just happened ""not to cry"" here as well as BlackPrapor and note that it is in same day and both of you are not even active on forum anymore. Is it only me or is this fishy?

### Reply 4:
Yeah lot of people are trying to push their machines way beyond 70th/s which I mean I can't blame them but if you don't have the cooling to do it. It isn't worth doing. Better off shooting for a mild 15-20th/s increase where no one has issues than going into uncharted territory. At least that is my input on it. We provide a few settings on the website to attain the small overclock and to attain a good <truncated> Those should be a baseline and there really is no need to go away from that unless you have free power and are willing to risk it.

### Reply 5:
If it was a newbie, that comment would probably be deleted already. I was laughing my ass while I was reading it. Just ignore it.

### Reply 6:
well blackprapor was gone for more then 20 months.sierra8561 was gone for 10 months and did overclock.i my self over clocked 22 s9s for ten days with other firmware and had bad results.to me this firmware will shine with underclock.the t17 can do 200 watts less with the same hash or close to the same hash.on this firmware. so for every 10 you down clock you can add a t17. no harm to gear and more hash. much more sound method of using the firmware.

### Reply 7:
We got a guy in our telegram group that got his T17 down to 42.5w/th at 40.5th/sI honestly want to buy a bunch more after seeing his numbers.What S9 firmware did you have bad results with?

### Reply 8:
He deleted his post/ post was frodocooper'ed , his account is shady no doubt, but the info he had put together are someway reasonable, overclocking your gears is risky, nevertheless ,it does bring more profit so in some cases it is worth it.""Does overclocking shorten the life-span of any electronic equipment?"" is an ever lasting debate, an overclocked gear may last longer than a gear running at stock setting or even under-clocked, there are no real accurate numbers one can use to determine the amount or possibility of damage caused by over-clocking , but it's safe to assume that overclocking must be done in a reasonable manner to minimize the risk the maximize the gains BTCBTCBTC.

### Reply 9:
Does anyone have settings for best underclock lately? I have been running my s17 pros at 66th @ 2800w. So it's essentially a s17e or whatever. If I go higher than that, it can push to 75th but the power ratio goes out the window and I'd rather leave it at a stable overclock. T17 I have no tried yet, trying to figure out most efficient settings honestly.

### Reply 10:
I have yet to even try one t17.But I will do so soon.Once it works I will shoot for 45 watts a th and 42th hash power.If I do it I will buy more of them.

### Reply 11:
July 2019 bitmain. But all those s9's are old and all were running for years at 13.5 then jump to 15.0everyone had an issue with the center board. Not so much the board temps but the current draw at the jacks and plugs. I browned just about every set of center board jacks.Now I have yet to set up any of the t17's with your firmware. But I plan to do so. I a<rest of thread truncated>
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23195,"Date: 2020-01
Topic: Wanted blueprints for Antminer wooden unit
### Original post:
Hi.I want to put a container inside my garage to host 2-4 antminers. I have a window which I'll take out and have the extraction fan on to remove the heat and hoping the passive intake will be enough as long as I remove the heat.I have seen designs of 5'x'6x6-7' wooden units with heat resistant materials and 8"" thermally insulated ducting. I have a carpenter but would need more than just an idea in my head.Any help be ace.

### Reply 1:
<link> does this look?

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23229,"Date: 2020-03
Topic: Garage repaired. Enclosure advice needed
### Original post:
HiI'll repaired my garage sound proof and water tight. I have had an electrician come round and make sure the correct cabling are used 20amp cables and new fuse board all safe. Power networks has upgrade the fuse and electricity board.I need to punch a hole in the wall to vent the heat. I would like to fit up to 6 miners. But I would like to know if this plan would work <link> I need to push all the heat (ebay 3-d printed vents) to one side which is divided in the middle. I was thinking 3 high 2 rows. With an extractor fan built into the enclosure and 8"" thermally insulated ducting to the outside. I've contacted a company who specialised in fans to suggest what extractor fan would be necessary. Think suggestions here were something that would do 4,000 CFM or 5,000cfm. Any advice on build would be fantastic - Would my design be over the top. Could I just do a large box with an extra fan like this<link>

### Reply 1:
Your plan according to the image is fine the important is you can bring the hot air out from the room to avoid temperature issues.I think about the exhaust fan 5,000 CFM is the right choice.About the video, you can follow the design if you'd like it just make sure that you can exhaust hot air from the box and filter the intake air.

### Reply 2:
Do you have a window? I have run a few different setups using my garage with neighbors in fairly close proximity. One was using my window as the direct exhaust.The bottom of the window provides air intake along with a few other spots. I ultimately went to a system using my garage door propped open and secured along with thick wire mesh for security. Exhaust through the middle and intake on either side. The best advice I have is do it for as little cost as possible. Here is the topic I document my summer setup as it ran last year.<link>

### Reply 3:
Im in the U.K. struggling with fan options. Does the design work? Ive left space between units

### Reply 4:
About the static pressure, high pressure is always recommended to move the hot air fast on the room Better understand airflows in the room you can use smoke to check how air flows in the room work.I don't know the exact pressure since I don't know how large the room is but if you are going to build a large box enclosure I think 0.5 pressure might be enough to vent the hot air from the box. Just always remember ""the higher, the better""

### Reply 5:
Due to the changing size of the Antminers. Would this design work? A 5,000 cfm fan at the top with 2 passive filter air intakes at the bottom of each side.Am I getting close? Lol.

### Reply 6:
what country are you in?2 of these will do<link> thermostats 5 to 10 degrees different.only one will run when it is cooler two when warmerlastly you will have one working if one breaks which will allow you to run at least your gear.

### Reply 7:
It should be good for 6 units max.We are talk s17pro or something like that correct?I will poke around on uk websites to see if I can find some good fans for you.this is too weak <link> fan for 2 units topsThis one below may not be in stock<link> has a 20 inch sizeebay uk has a few from the usathis one is cheap but you will need two or three of them.<link> a beast 2 speeds more then enough 7800 cfm and 5400 cfm<link> is a nice fan more then you need. and a bit pricey.this one is nice<link> speedsthis is similar<link> speedsor get 2 of these<link>

### Reply 8:
not likely.the same size or bigger .2 x 6 inch is pie x r squared.so a six inch hole is 3.14 x 9 or about 28 square inches. you have 2 of them so when they feed into 1 it needs to be about 2 x 28 = 56 round up to 60 square inches.that is a duct about 9 inches as 3.14 x 4.5 x 4.5 = 63 square inches. so a 9 inch at smallest but a 10 inch is better.

### Reply 9:
4 inline fans are cheaper would this design work

### Reply 10:
nope.do not shrink the ducts .Ie if miner fans are 120mmducts should be bigger then 120mmshrinking ducts and making ducts longer impend air flow. which = bad not good.

### Reply 11:
So go to 6 ducts 150mm. If I change the 4 to 6. Will it be poss to have them both go to a 6 duct and out through 6 hole?Otherwise this was another idea.Passive air filter at the bottom on the floor of enclosure.Inline fan should be all hidden inside.

### Reply 12:
Help! I need a U.K. fan that will fit an 8 surely a 1250 cfm would cover pro 73th/s?

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23293,"Date: 2020-06
Topic: Help needed / CGminer issue.
### Original post:
Hello all,Years ago i was mining altcoins using an antminer.I recently found my old antminer, and was wondering if it was still working. But i cant get it to work anymore.The issue is not the miner itself, i cant get cgminer to start. Here is wat i did so far:- i downloaded Zadig and installed driver CP2102 USB to UART Bridge Controller- i downloaded CPminer 4.11.1- i created a .bat fileWhen i try to run it, cmd prompt shows and disappears in a blink of an eye.i have no idea what i did wrong. Can someone help me out a bit?oh, i am running windows 10

### Reply 1:
For a start - which Antminer? There is a plethora of them though only 3 that would use USB & cgminer. Nonetheless they are all different...To see what's up, open a command window first and launch the bat file in there. The bat may still fail but at least the window remains open so you can see the error message(s)

### Reply 2:
For a start, you need to provide the full path to where cgminer is located for it to run...

### Reply 3:
the .bat file is placed in the cgminer folder. I dont see a cgminer.exe file in that folder.

### Reply 4:
Then that is your problem - either cgminer got deleted or is residing somewhere else.The folder should have cgminer.exe, several readme's as well as a couple test .bat files in it.

### Reply 5:
Ok, but isn't that weird, after I just downloaded the files ?Before I unpack it, there isn't an .exe file in the downloaded folder.

### Reply 6:
Got an antivirus program running? It is common for several of them to wrongly tag cgminer.exe as malware because some malware uses it to try stealth mining in the background. If the AV tags it then it probably also quarantined/deleted it.

### Reply 7:
Cool. Merit given for letting us know the problem was resolved.Last thing you should now do is lock this topic so it doesn't get spammed. Look at bottom-left of the page and you should see ""Lock Topic"".I recall something about -ck removing the Win executable from the last release because of that malware issue to force hackers (and legit users) to re-compile it if they're going to use it under Windoze. Oh, for reference the (locked) thread for cgminer is here in the Software area.

### Reply 8:
Right,Its an Antminer U3, i used this setup:Antminer U3s can be run on any CGMiner based device. A Windows based PC is recommended although a similar process can be applied on a Raspberry Pi.1. Plug in the USB cable from the U3 to your computer.2. Plug in the power supply into the mains.3. Plug in power supply into the U3.4. Download the latest version of the mining software (CGMiner) here: <truncated> Download the windows driver installer (Zadig) here: <link> Run Zadig. Use the drop-down to find the ""CP 2120 USB to UART Bridge Controller"" entry. If it doesn't show, select ""Options->List All Devices""7. Set the new driver to be WinUSB and click Install (or Re-Install) driver.8. If it is successful you will see this message:9. Extract cgminer to your chosen location.10. Create a new file in notepad and enter pool information as below. Save it as a .bat in the same folder as <truncated> --bmsc-options 115200:0.65 -o XXX -u XXX -p XXX --bmsc-voltage 0800 --bmsc-freq 1306-o = mining pool address : mining pool port number-u = workername from your mining pool-p = password for your worker11. Run the bat file to start mining (remember to replace ""-o XXX -u XXX -p XXX"" with your own informat<rest of post truncated>

### Reply 9:
i got a 4.10 version, that included an .exe file.. thanks for your point in the right direction.Its working now.

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23354,"Date: 2020-11
Topic: having issue with changing whatsminer m3 firmware using sd card
### Original post:
hi! I have bought some m3 machines, i want to downgrade the firmware with sd card, most of them works fine after changing the firmware, but some of them which has e big black Heath Sink on their control board doesn't work after machine resets.and now whenever i plug machine in to power all lights(network port, Alarm and Active lights) keeps on and not getting off or flicking. i have tried both Zynq and H3 image but it still not working.before changing the firmware they works fine. any idea?is there any other image file other than zyng or h3?thanks guy <3

### Reply 1:
I don't have much experience with whatsminer m3 but I found some useful troubleshooting guide which I think will help to solve this issue. Take a look at this troubleshooting guide from here <link>

### Reply 2:
Did you buy it from pangolinminer? Ask their help, they should be able to give you proper instructions

### Reply 3:
thanks sir,not helping i think i need sd card firmware version.

### Reply 4:
actually i bought them from reseller and they don't give me a useful solution. i don't know where they bought their devices.

### Reply 5:
I don't think they support downgrades. Why do you want to downgrade?, is there a problem with the current firmware version?

### Reply 6:
yes they are on 8 Th/s(low power mode) and when i choose a firmware in whatsminer tool for upgrade the miner it showing failed error and the device not get upgraded.

### Reply 7:
Did you ever get this sorted? I'm having the same issues.

### Reply 8:
note there are h3 and h6 controllers look to see if you have an h3 or h6.

### Reply 9:
Check the latest firmware from Whatsminer from here <link> sure to check the control board model before you use the SD card image to flash it to your miner.

### Reply 10:
Did you ever get a solution? Ive got six of them that someone has upgraded the firmware on and now they're useless lol

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23360,"Date: 2020-11
Topic: Whatsminer M20s Keeps rebooting
### Original post:
This miner is 1.5 years old and was working fine during this period. I have 3 other miners in the same network and they all work fine. In the past every time one of the had a problem I could know the issue by loging on the ip as admin.This miner is odd. There is no error showing in the admin tab. I tried cleaning it, switch cables with other miner cables, factory reset and updating the firmware.Here is the log incase it could help:<link> I removed the pool link and my workername + worker password

### Reply 1:
Sorry, I meant that I removed the pool link and others from the log not from the admin panel.I use binance pool in all 4 miners I have and all of them work without any problem. Even this one used to work fine untill just 2 days ago. it started rebooting radomly every 10 - 120 minutes without any change in my network or any settings

### Reply 2:
is the log complete?Code:Sat Nov 21 20:23:11 2020 local0.notice cgminer[2177]: Accepted 64b286bf Diff 167K/65536 SM 0 pool 0 (temp 66.0 69.5 71.5 fan 4110 4140)Sat Nov 21 20:23:16 2020 local0.notice cgminer[2177]: Accepted a4865ed1 Diff 102K/65536 SM 0 pool 0 (temp 66.0 69.5 71.5 fan 3930 3990)Sat Nov 21 20:23:16 2020 local0.notice cgminer[2177]: Accepted 570a4b88 Diff 193K/65536 SM 1 pool 0 (temp 66.0 69.5 71.5 fan 3930 3990)Sat Nov 21 20:23:19 2020 local0.notice cgminer[2177]: Accepted 546aff37 Diff 199K/65536 SM 2 pool 0 (temp 66.0 69.5 71.5 fan 3870 3930)Sat Nov 21 20:23:23 2020 local0.notice cgminer[2177]: Accepted 4d4ffce9 Diff 217K/65536 SM 2 pool 0 (temp 66.0 69.5 72.0 fan 4020 4110)Sat Nov 21 20:23:26 2020 local0.notice cgminer[2177]: Accepted 2d7e3b0b Diff 369K/65536 SM 0 pool 0 (temp 66.0 69.5 71.5 fan 4020 4080)it just ends a bit funny.if you have another m20sjust go to the last 50 lines in the log and paste them like I pasted the last 6 lines of the bad machine.

### Reply 3:
It is complete but probably contains information after the issue happened. Will try to get the log exactly when the issue happens next time.Here is the log from another m20s but I dont think there is anything usefull on it.Code:Sun Nov 22 01:25:17 2020 local0.notice cgminer[2755]: Accepted 28b0204f Diff 412K/131072 SM 1 pool 0 (temp 61.5 65.0 72.0 fan 4530 4590)Sun Nov 22 01:25:28 2020 local0.notice cgminer[2755]: Accepted 0972dce7 Diff 1.77M/131072 SM 1 pool 0 (temp 61.5 65.0 72.0 fan 4530 4590)Sun Nov 22 01:25:41 2020 local0.notice cgminer[2755]: Accepted 33603600 Diff 327K/131072 SM 1 pool 0 (temp 61.5 65.0 72.0 fan 4530 4590)Sun Nov 22 01:26:01 2020 local0.notice cgminer[2755]: Accepted 15a8b9de Diff 775K/131072 SM 0 pool 0 (temp 61.5 65.0 72.0 fan 4500 4590)Sun Nov 22 01:26:11 2020 local0.notice cgminer[2755]: Accepted 6a6383bb Diff 158K/131072 SM 1 pool 0 (temp 61.5 65.0 72.0 fan 4530 4590)Sun Nov 22 01:26:12 2020 local0.notice cgminer[2755]: Accepted 125ef01a Diff 913K/131072 SM 1 pool 0 (temp 61.5 65.0 72.0 fan 4500 4590)Sun Nov 22 01:26:17 2020 local0.notice cgminer[2755]: Accepted 6f8f3e79 Diff 150K/131072 SM 0 pool 0 (temp 61.5 65.0 72.0 fan 4530 4560)Sun Nov 22 01:26:21<rest of post truncated>

### Reply 4:
Why would you do that? this is probably why you getting the below error in the logThere does not seem to be any problem with your networking setting and your miner is getting an IP from the dhcp tablePlease use these pool details and <truncated> your own bitcoin address in the worker, that one I put here is on Ck's topic first page.After filling in the pool details, the kernel log might and most likely will be different and we could figure something out.

### Reply 5:
Why would you suspect a network-related issue then? the problem you are describing seems pretty much like a PSU issue, it's likely that the PSU gets hot, it goes to protection mode for a while then come back on, try to open it, and give it a good dusting.Also, this could be a temp-related issue, you would need to clean this miner, I would set the fans to 100% just to make sure that high temps are not causing the issue, but as far as the network related stuff, if you are using DHCP try to use a static IP for this miner, and if you are using a static DHCP change it to static.On a side but related note: Binance pool sucks, you should be really careful and watch your earnings closely while you mine to that pool.

","[
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  {
    ""hardware_name"": ""miner cables"",
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13647,"Date: 2020-04
Topic: Antpool custom firmware?
### Original post:
Anybody seen this/used this?<link> looks like a custom firmware for the 17 series, but can only be used on ant-pool mining pool?My s17 is in the mail and I have been looking into various firmwares to use to enhance the efficiency of the miner, so I am ready to go when it arrives! Any experience or feedback you have would be great!

### Reply 1:
Buggy and not as efficient as some others. No way to check if it steals hashrate since it's locked to their pool but probably doesn't. Void's factory warranty. They pulled the download links off different websites I know they did the Chinese one might have done English one too because of complaint's and issues. But honestly, for a free firmware locked to a pool when it is running good it is nice. Just the numbers could be better.

### Reply 2:
yeah, weird, the firmware was there yesterday, now the link is broken.

### Reply 3:
If interessed ...> for T17<link>

### Reply 4:
Thanks! I have the s17 though. I have the firmware download to my pc, just not installed on my miner. I was wondering how it was working... good for you or not?

### Reply 5:
I don't know, i don't try it EDIT : i try it !!!so, is not bad firmware, is same but with more option of hashrate ... ONLY hash on antpool (are stipulated) and :WARNING ! NO DOWNGRADE POSSIBLE ! (is possible only by SDcard)

### Reply 6:
And nobody would ever think of making their local network DNS resolve antpool to some other pool, totally absolutely no one would ever think of doing that. Its not like it has a public crypto key embedded in the uri schema like Stratum V2...

### Reply 7:
Thanks for this details For me , i have try to unlock SSH, but no succes, is totaly locked and ssh client is not installed on this firmware, i try to unlock by serial but no success...

### Reply 8:
Ok, I took the plunge... here is the skinny:1.) There are still 3 modes. Low, normal and turbo.2.) Low mode starts out at ""low"" and only allows you to UNDERCLOCK frequency in 1 TH steps down to -20TH from where the machine normally hashes at this setting3.) Turbo mode starts out at ""turbo"" and only allows you yo OVERCLOCK frequency in 1TH steps up to +20TH from where the machine normally hashes at this setting4.) Normal remains unchanged.5.) The machine still auto-tunes voltage, not entirely sure how yet, I'll need to reboot a bunch more times and look at kernel logSo real life example:I have an S17 50T and here are the pre-firmware stats:Low = 40.5 TH/s and 1750w at the wall (43w/TH)Normal = 51 TH/s and 2300w at the wall (45w/TH)Turbo = 57 TH/s and 2650w at the wall (46w/TH)Post firmware:I dropped 10TH for low power, it autotuned very quickly, less than 5 minutes and came up with thisLow = 30.5 TH/s and 1150w at the wall (38w/TH) pretty good under-clock I thought, so I tried -20TH just to see and it wouldn't hash. put it back to -10 and viola 30.5 TH/s and 1150w at the wall. Not bad.So let's see what overclocking did...I tried +10TH and it autotuned for 20 minutes or so only to re<rest of post truncated>

### Reply 9:
Don't you mean the SSH server? The miner has to have an ssh server to respond to any client wanting to connect. It was probably openssh...If there is still SD card boot, maybe you could inspect this way? Don't worry, I'm sure we will find a way in, its only a matter of time...

","[
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    ""hardware_name"": ""s17"",
    ""hardware_is_owned"": true
  },
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    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""PC"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""miner"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S17 50T"",
    ""hardware_is_owned"": true
  }
]"
13654,"Date: 2020-06
Topic: Has anyone been using whatsminer 5.0.2 to control gear.
### Original post:
Wait until you see the firmware in the works with these. These puppies got some power.

### Reply 1:
Yup been using it for a while, also use the InnoMonitor_64 for the inno's (doh) and I seem to get on best with BTCTools for the bitmain kit (made by BTC.com)

### Reply 2:
I only have 5 <truncated> whatsminer 5.0.2 is nice for remote you can do every unit and instantly see your stats for all your models.I may want more of these.

### Reply 3:
I want to be the first one to hear the good news ""exclusively"". Phill, would you explain what do you mean by ""remote"" does the whatsminer 5.0.2 tool give you the ability to access your gears outside of the local network, or is just just a local monitoring tool?I am a newbie when it comes to non-bitmain mining gears, sadly for the past couple years I have been buying like 99% Bitmain gears, and I have decided to put an end to this, the plan is to slowly accumulate M21s while getting rid of all (or most) Bitmain gears, if we could get a better power/hashrate options on those gears - that will be a game-changer.

### Reply 4:
team viewer is freeI run two old hp pcs 24/7/365<link> add a 128 gb ssdone is on verizon routerone is on optimum routertwo full operate networks separate itspretend router address is 192.168.0.1 on each oneI have all new gear on the optimum routeronce it works for 1 month with zero virus I move to verizon router.it is as if they are in two different homes and are full isolated from each other. only costs 600 usd a year to do this.back to whatsminer 5.0.2 I open the verizon link from my home in Howell to it in clifton via teamviewer i open what's miner 5.0.2 and can do up to 200( plus) what's miners I check them off and do low high or normal speed . If I want to do only 5 of 200 on highest speed I check them go to speed control on remote and set those five instantly. from 60 miles or 100 klicks away.I could do this from any pc anywhere in the world.if I just did teamviewer I could do all my gear but 1 at a time. not all of them.I am very likely gong to move to whatsminer's gear. I am in NJ about 250 miles from NC I got a good repair guy there. that has a contract to do whatsminers gear.

### Reply 5:
Isn't this more of a cgminer (software) feature rather than the miner (hardware)? Its nice they provide their own tool, but so could anyone else who could do api rpc ssh commands.Its not like its a special MicroBT feature (Microbt is the actual manufacturer name, whatsminer is a mere brand akin to antminer).Or did they also release a tool confusingly called whatsminer too? So not only we have resellers using the brand but tools too? The M in the model should give you a reminder that you are using MicroBT gear, that happens to be branded whatsminer just like Bitmain brands theirs antminer for whatever reason, while antminer is also a pool, because confusing must be good for profit, or some such...

### Reply 6:
Yes they've had a tool out for ages called WhatsminerTool, its up to version 3.4.6 nowI guess MicroBT feel they can call it Whatsminer because thats the name they call their hardware devices, just like Bitmain call their hardware devices Antminer.Yes both Innosilicon and Bitmain have similar tools for their devices. Its cgminer API calls but I think they also do web calls to the device as well.

","[
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    ""hardware_name"": ""InnoMonitor_64"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""BTCTools"",
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    ""hardware_name"": ""Bitmain gears"",
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    ""hardware_name"": ""M21s"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""hp pcs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""128 gb ssd"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""verizon router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""optimum router"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""MicroBT gear"",
    ""hardware_is_owned"": false
  }
]"
10899,"Date: 2020-07
Topic: Current List of Competitive Hardware - January 2020
### Original post:
Considering there are a lot of hats in the ring these days; I thought a comprehensive list was in order. Below you will find hardware listed by manufacturer. I'm going to try and limit it to competitive hardware, but feel free to suggest something else be added if you feel the list falls short.The purpose of this thread is not for discussion; I will link all current discussion topics and available forum reviews.Pricing and specs taken from manufacturer websites. For hardware not sold directly by the manufacturer you will see a ""Where to purchase"" link to their distributor. See reviews and discussion threads for real world tests. Know that all miners have a variance in power consumption and hashrate depending on conditions, these are noted in the discussion/review threads or Manufacturer websites.Current Leader in Advertised Efficiency = Bitmain S17 Pro .0395 J/GH AB = Asic BoostCurrently or recently available miners listed under .07 J/GH 1. Bitmain - S17 Pro 56 TH @ .0395 J/GH 2. Bitmain - S17+ 67 TH @ .04 J/GH 3. Innosilicon - T3 43 TH @ .048 J/GH 3. MicroBT - M20S 68 TH @ .048 J/GH * M20 @48, M20S @62/65 TH models also available at this efficiency 5. Bitmain - T17 40 TH @ .055 J/<rest of post truncated>

### Reply 1:
Updated main list to include the Bitamin S17+. Used red color to identify gear on that list drawing 3KW or more, as suggested by Kano. Bitmain speculation has been changed to 5nm chip speculation thread as there are no miners on the horizon but that's the direction they are going. While I don't think the entire conversation that went on here should have been removed most of it was turning this into a discussion thread. I still welcome and accept all suggestions, such as the 3KW+ tagging. As well as any miners people feel should be added to the list. Feel free to post or PM if you have anything to add.

### Reply 2:
Then there is the cheetah miner f7! Shipping this month does 39W/T.Curious whether people have had any experience with them?

### Reply 3:
@Sundance__Articles on crypto ""news"" sites about new equipment and companies are typically all but useless. Very few sites check 'news' that is submitted to them and in fact usually are 'pay to print'. Until gear is in the hands of trusted members here and reviewed by them consider all reports as at least highly suspicious.

### Reply 4:
Sorry I missed this thanks for your contribution. I'll likely be updating the OP this week as I've been focusing elsewhere.I'll keep an eye out but won't add it to the list until it ships and can be confirmed real. Apart from that you can start a discussion tread or find one if it exists and discuss there. Thanks.

### Reply 5:
agreed with the methodultimately i was posting to actually necro it for you and it was the only piece of genuine info i could offer so i am glad I am not suggesting anything about Cheetah other than I know they exist as there's F5s out there<link> This article has quite a bit on them and their team.

### Reply 6:
Very reasonable. Ok, I have no attachment to them I just like to see competitors. Both Cheetah's F7 and StrongU Ut-U8 look interesting at their advertised W/T but I admit I have not seen any concrete evidence they actually exist.

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    ""hardware_name"": ""Bitmain S17 Pro"",
    ""hardware_is_owned"": false
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  {
    ""hardware_name"": ""Bitmain S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Innosilicon T3"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""MicroBT M20S"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Bitmain T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Cheetah Miner F7"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""StrongU Ut-U8"",
    ""hardware_is_owned"": false
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23380,"Date: 2020-12
Topic: Which tools and materials are required to glue back a detached heatsink on S17?
### Original post:
The cheapest glue/adhesive or whatever you want to call it is the black glue form China, you can find it on <link> , depending on where you are shipping it to - this might not be an option because it can't be stored in room temperature for more than 10 days, it needs to be stored in the fridge.Another alternative would be Arctic Silver but it's very expensive, the good thing is you don't need much of that paste if you are only fixng a few heat sinks.As far as the heat gun is concerned, anything will do, watch this video to learn how to fix the heatsink.

### Reply 1:
thank you, this is very helpful. Does ZEUSBTC ship to USA?

### Reply 2:
I don't see why they wouldn't, IIRC someone from the U.S said they ordered something from them, you can also check on Aliexpress, i believe it is the same product but a bit more expensive on Zeusbtc, but they have a good reputation and I have personally traded a lot with Kevin from Zeusbtc.

### Reply 3:
I've ordered from Zeusbtc with shipping to the USA. They were responsive and shipped out quickly. Just contact them via Whatsapp. Shipping prices can be pretty expensive. The heatsinks are originally attached using solder, but removing and reattaching these with solder is pretty difficult. Getting the correct amount of solder is difficult, and you need to be very careful or you could end up shifting the chip beneath the heatsink. It takes a lot of practice to be able to do it reliably. I wouldn't advise attempting it unless you have the tools to diagnose issues after (test fixture, oscilloscope, <truncated> you go the glue route, you're probably better off finding some arctic silver locally. Or some other thermally conductive epoxy.

### Reply 4:
Detached heatsinks seem to be a pretty common problem on the S17 series antminers. My understanding is gluing back a detached heatsink is not that hard to do if you have the glue and maybe a heat gun, but i'm not sure what to buy to do this myself.Can someone post details on which glue to buy and which heat gun?

","[
  {
    ""hardware_name"": ""heat gun"",
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  },
  {
    ""hardware_is_owned"": true,
    ""hardware_name"": ""test fixture""
  },
  {
    ""hardware_name"": ""oscilloscope"",
    ""hardware_is_owned"": true
  }
]"
23185,"Date: 2020-01
Topic: recovery A1 control board
### Original post:
Hi friendsI have some Aisen A1 miners. This devices , after failed power supply, control board will make problem too.How can I recover this kind of control boards after repair power supply.

### Reply 1:
what year did they come out?I think they are not supported well anymore ( not sure )

### Reply 2:
It's 2019

### Reply 3:
Most of us maybe all of us don't have the unit.<link> this is all I can find.try googling firmware for aisenminer a1.

","[
  {
    ""hardware_name"": ""Aisen A1 miners"",
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  },
  {
    ""hardware_name"": ""power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""control board"",
    ""hardware_is_owned"": true
  }
]"
23233,"Date: 2020-03
Topic: S17 Pro PSU Issues?
### Original post:
Hi Folks,Has anyone noticed issues with S17 Pro psu's. I have a bunch which have gone bad lately. Wondering if others are facing similar issues?

### Reply 1:
No details. All psu's should be the same.But which s17 pro model ?the 50ththe 53ththe 56thWhich settings <truncated> <truncated> power voltage are you supplying ?210220230240If you have after market firmware and are cranked to 65th using 210 volts I am not surprised.If you run normal speed on a 53th machine using 235 volts I would be surprised.I have 15 53pros that are perfect on turbo setting (about 57th) using a steady 226-232 volts.So I guess there can be a lot of variance in what your gear is doing.

### Reply 2:
I had zero problems with the S17 pros so far, but mine run on a voltage regulator, and voltage is dead stable at 220v, ALL the 17 series both T and S have very little tolerance to the voltage, they prefer 220v, they might work well all the way down to 200v and up to 240v, anything outside of that range will cause them problems and end up toasting them, and that what I think your problem might be.If your voltage is leaning to the lower side of the range mentioned above, running them on Low power mode MIGHT fix the issue since fewer amps might result in more voltage that is enough for them to run stable, but if your voltage is leaning to the higher side of the range I am not aware of anything you can go do except for buying a voltage regulator.

","[
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    ""hardware_name"": ""S17 Pro PSU"",
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23306,"Date: 2020-08
Topic: New Antminer T17 issues plz rectify my issue
### Original post:
Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)Memory: 195068K/245760K available (6345K kernel code, 231K rwdata, 1896K rodata, 1024K init, 223K bss, 34308K reserved, 163<rest of post truncated>

### Reply 1:
do not upgrade your firmwareplease let us know what firmware is in the machine.please look at mikeywith's thread on thermal sensors.

### Reply 2:
Not sure how I missed this Kernel log, anyway below is the <truncated> 11:35:12 <truncated> Temperature sensor calibration: chain 0 success.2020-07-24 11:35:13 <truncated> Temperature sensor calibration: chain 1 success.2020-07-24 11:35:14 <truncated> Wrong temp sensor type, chain = 2, sensor = 6, type = 0x0, retry.2020-07-24 11:35:14 <truncated> Wrong temp sensor type, chain = 2, sensor = 6, type = 0x0, retry.2020-07-24 11:35:15 <truncated> Wrong temp sensor type, chain = 2, sensor = 6, type = 0x0, retry.2020-07-24 11:35:15 <truncated> Wrong temp sensor type, chain = 2, sensor = 6, type = 0x0, retry.2020-07-24 11:35:15 <truncated> ERROR_TEMP_LOSTYour miner has a total of 12 temp sensors, so that is 4 on each board, now it simply can't communicate with any of the 4 sensors on the 3rd board (usually most left), but based on information I have collected and confirmed from different sources including my own and other memmber's experince, it's unlikely that all 4 sensors went bad, and it's more likely than not that one of the chips/heatsinks lost conductivity to the PCB and it causes this error, there are a few things you can try, chances are slim but there is always hope.

","[
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    ""hardware_name"": ""Antminer T17"",
    ""hardware_is_owned"": true
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  {
    ""hardware_name"": ""CPU"",
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  {
    ""hardware_name"": ""Xilinx Zynq"",
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    ""hardware_name"": ""Temperature sensor"",
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13645,"Date: 2020-02
Topic: cgminer showing 1969-12-31 timestamp
### Original post:
I'm running the latest version of cgminer on Ubuntu 18.04.03. The output of timedatectl is:Code:Local time: Wed 2020-02-05 15:46:13 ESTUniversal time: Wed 2020-02-05 20:46:13 UTCRTC time: Wed 2020-02-05 20:46:13Time zone: America/New_York (EST, -0500)System clock synchronized: <truncated> active: yesRTC in local TZ: noHowever, when I run cgminer, it shows the starting date as 1969-12-31. Will this affect my mining (BTC solo mining)? If so, how can i correct this?

### Reply 1:
It's showing that it had no time source it could connect to and started mining at time epoch = 00 is 1970-01-01 00:00:00 UTCSo since yaw behind UTC (-5) it will display earlier than that to start with.The start time is stored, not changed when the clock changes, so it wont change unless you restart cgminer after the clock is corrected.

### Reply 2:
Unless you're solo mining block errupters or other USB miners (which are way outdated), Ubuntu won't do much for you.If you are using GPU's head over to the alt coin section.If you are using really old hardware, don't expect them to do much for you.And to answer your question, it shouldn't matter what time the program displays.

### Reply 3:
Thanks!

","[
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    ""hardware_name"": ""Ubuntu 18.04.03"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""block errupters"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""USB miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""GPU's"",
    ""hardware_is_owned"": false
  }
]"
23341,"Date: 2020-10
Topic: issue on T17e
### Original post:
Looks like it might be a power supply issue, the log says it's trying to set the voltage to 18, but it reads back 0.52. Might want to check that the cable going from the control board to the power supply is seated properly.

### Reply 1:
Hellowhen i turn on my T17e, first lamp green and red both is light. after short time both going off. i checked pool setting is fine. and i have below error:kernel log:Code:[ 0.000000] Booting Linux on physical CPU 0x0[ 0.000000] Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018[ 0.000000] CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387d[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache[ 0.000000] Machine model: Xilinx Zynq[ 0.000000] cma: Reserved 16 MiB at 0x0e000000[ 0.000000] Memory policy: Data cache writealloc[ 0.000000] On node 0 totalpages: 61440[ 0.000000] <truncated> node 0, pgdat c0b39280, node_mem_map cde10000[ 0.000000] Normal zone: 480 pages used for memmap[ 0.000000] Normal zone: 0 pages reserved[ 0.000000] Normal zone: 61440 pages, LIFO batch:15[ 0.000000] percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152[ 0.000000] pcpu-alloc: s19776 r8192 d21184 u49152 alloc=12*4096[ 0.000000] pcpu-alloc: [0] 0 [0] 1 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960[ <rest of post truncated>

### Reply 2:
What AC voltage do you run this miner 110 or 220?It seems the PSU is not feeding enough power you might need to check if the power supply is properly plug to wall outlet. Or if you are using power surge try to plug the miner directly into wall outlet and try to check again if there's any changes. If not then you might have a faulty PSU that needs repair or replacement.And I suggest you learn to use a code button instead of quoting the whole log to make it short and clean. Here's the button what it looks like:

### Reply 3:
I had exact same issue with a s17pro.It was reading under .5 volts. vs 20 volts.I replaced psu and it mines. and reads 20.2 volts not 0.4321 volts.You will need this psu<link> it sells out a lot.

### Reply 4:
Code:2020-10-20 19:14:58 <truncated> setting to voltage: 18.00 ...2020-10-20 19:15:00 <truncated> retry time: 02020-10-20 19:15:01 <truncated> average voltage = 0.5423882020-10-20 19:15:01 <truncated> target_vol = 18.00, actural_vol = 0.54, more than 0.5v diff.The issue does seem like it's power-related, it could a bad PSU and it could be wrong AC value input, please check the voltage you supplying the PSU with, if it's below 200v or above 240v then that is likely the cause.Also, many of these issues are actually on the firmware/software level, so you would want to test it with a custom firmware, I suggest you try this firmware since it's the only trusted firmware for the E version of these miners.

### Reply 5:
maybe PSU dead? if it dead, it will turn? it should not run lan lamp etc if it dead, correct?

### Reply 6:
I have a new controller purchased in April 2019 for the s17.I wonder if I used it with the dead psu if the psu would work.I could do it.I would need 2 hook up 4 fans. to the new controller. and simply check the voltage reading.if it reads under 0.5.with the April 2019 firmware and the aftermarket firmwarethen the psu is dead.I will give it a shot tomorrow.

### Reply 7:
If the word ""dead"" is confusing, change it to ""bad"", so the answer is ""yes"" a bad PSU can turn on the control board as well as the LEDs but it won't be able to supply enough electricity for the hash boards, so it isn't really dead but useless.

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23377,"Date: 2020-12
Topic: Antminer S9K not working
### Original post:
Code:read chain[0] hardware info:major type: 0minor type: 2chip level: 0bom version: 0x10pcb version: 0x39fixture 8pattern result: L0read chain[1] hardware info:major type: 0minor type: 2chip level: 0bom version: 0x10pcb version: 0x39fixture 8pattern result: L0Where is Chain [2]? it seems that chain 2 is missing, and based on my experience with these lousy S9ks is that if there is one bad hashboard it will stop the whole miner from mining most of the time, so can you try to unplug chain 2 and try again? make sure you unplug the 6pin PSU cables and just the ribbon cable that goes to the control board.

### Reply 1:
I have an Antminer S9K with firmware Fri Dec 13 10:01:09 CST 2019 has been working fine until the last week stopped working and gave me this error shown in the Kernel log.Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache h<rest of post truncated>

### Reply 2:
Thank you very much, I will try that and get back to you with the results.

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10870,"Date: 2020-02
Topic: Antminer S19 Pro
### Original post:
trump tax will cost me $$$

### Reply 1:
Bitmain has new ASIC - Antminer S19 Pro. Have you seen tech specs? 110 THs with only 3.3 KWh power consumption. That's dope. Power efficiency 30 J/TH. I think it's time to say bye to all ASICs with power efficiency more than 75 J/TH.

### Reply 2:
links pleasefound it!too bad it is a one speed unit.

### Reply 3:
There you go..S19 Pro: <link> <link> for the Pro and 95 TH/s for the S19.

### Reply 4:
I will be getting 1 of each asap. I wish they were 2 speed110 x .1387 = 15.257 a day using 78-80 kwatts pre ing is :1 cent 15.25 - 0.80 = 14.25 if price stays still 7.63 - 0.80 = 6.83 after ing2 cent 15.25 - 1.60 = 13.65 "" 7.63 - 1.60 = 6.03 ""3 cent 15.25 - 2.40 = 12.85 "" 7.63 -2.40 = 5.23 ""4 cent 15.25 - 3.20 = 12.05 "" 7.63 - 3.20 = 4.43 ""5 cent 15.25 - 4.00 = 11.25 "" 7.63 - 4.00 = 3.63 ""6 cent 15.25 - 4.80 = 10.45 "" 7.63 - 4.80 = 2.83 ""7 cent 15,25 - 5.40 = 9.65 "" 7.63 - 5.60 = 2.03 ""tight numbers for this gear if it is priced at 2400 and is shipped on april 1 long pay back times.

### Reply 5:
Would love to have my hands on a S19 Pro aswell but tbh I'm not up2date with the custom fees to Germany.

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23257,"Date: 2020-04
Topic: Avalon 841 controller by windows?
### Original post:
hi, everybody, one question.is possible connect the avalon 841 with windows and this mining with cgminer?.is possible run Avalon 841 without controller only with the AUC usb Controller and windows?

### Reply 1:
Short answer - NO.Long answer - maybe, but only if you recompile the OpenWrT and Canaan A8 source files to run in Winbloz. Good luck with that....

### Reply 2:
What would even be the benefit in this kind of a scenario?

### Reply 3:
Longer answer even if you get it to compile you are going to have other issues. Someone did a couple of years ago and still no-go. Check reddit, I think they were posting on there but I really don't remember.The ""controller"" is just a Raspberry Pi. You can run a 1 or 2 or 3 overall the cost of getting one vs. the time and aggravation of getting it to work on Windows is not going to be worth it. Probably none, unless you have an old computer sitting around but don't have a Pi handy. Stay safe.-Dave

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    ""hardware_name"": ""AUC usb Controller"",
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    ""hardware_name"": ""Raspberry Pi"",
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23277,"Date: 2020-05
Topic: Ebit 10.2 miner reduce hashrate
### Original post:
Can you try to access the miner on WebGUI and find the ""system configuration"" it must look like this below?Under this page look for PLL and try to change and reduce the value then check the miner if it reduces the hash rate and temp.You can also experiment with the temp limit and change the value then test if it helps to reduce the temp and hash rate.

### Reply 1:
The WebGUI that I mean is the page of the miner where you can access it by typing the IP address of your miner on the browser URL box. Now, it will ask for username and password then enter admin/admin.You can follow this video guide below to access the WebGUI: <link>

### Reply 2:
Hello AllI have I think an Ebit 10.2 hashing at 28th but in summer now it is getting a bit hot and I would like to drop it down a couple th to keep it a bit cooler but dont know how and cant find anything on how to make your miner run slower.Many thanks for any replys.

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16044,"Date: 2020-02
Topic: Small Mining farm
### Original post:
You are using a split room I suppose ? can you add a picture of how the back side (exhaust) of the room looks like ? it would also be great if you could share information about what materials you used to split the cold room from the hot room , how you did it, wiring , rack etc ..and dude do a bit cable management, you are blocking the fans with all those wires hanging everywhere , and I thought mine was badly managed Great stuff anyway, thank you for sharing I know some Malaysian miners,the power rate you guys have is pretty decent.

### Reply 1:
thanks for your suggestions, the network and power cables quite messy yeah, i will get the back side (exhaust) when onsite again.

### Reply 2:
Looks very nice and has a lot of potential but needs some TLC.I saw the miners have dust on them, thick one. Are you not worried to run them in an environment like that?

### Reply 3:
looking forward to seeing pics of it at completion.

### Reply 4:
yeah... quite dusty here... need to do house keep every few months yeah, our colleague just plug and play.... very messy overall around 6k usd per farm new farm setup is on the way <link>

### Reply 5:
thanks... will update again on the progress by progress yes, the noise are still there... but can't hear it at downstair. Will update again on the setup with ventilation system The main purpose of the holes is to isolate the intake air and exhaust air ... so the exhausted air(hot air) will not loop into the machines again...

### Reply 6:
what is the material you are using to separate the room? I am trying to build a similar set-up. but I am hung up on which is the best material to use to split the intake from the hot exhaust.

### Reply 7:
Hi, sorry for late reply... quite busing these few days... The material that we used for separating the room is Gypsum Board Partition. you may google it ============== Current status and progress ============== <link> for customer 105 units S9i and T9+ updated on 11 September 2019

### Reply 8:
Hello I just built a small mining farm and like to share the progress with you all.PICs :<link> keep going new farm is otw <link> on 2 September 2019new repair center <link> on 4 September 2019<link> for customer 105 units S9i and T9+ updated on 11 September 2019

### Reply 9:
Could have sworn I checked this place earlier, didn't see this gem.Would you mind sharing a location roughly (I know Malaysia very well)? East or West? Had all kinds of discussions on mining in the past with guys there but in the end no one could really come up with a profitable plan. Electricity costs are somewhat manageable, even considered LNG generators, and even if you didn't pay commercial tariffs... the problem is, as is apparent in above posts: the environment. Tropical climate is just so messy to deal with unless you pay a lot for insulation and cooling -- which then just brings costs all up. Very interested in your ventilation setup.

### Reply 10:
Cool! Very cool!I knew someone who did it a couple of years ago on a very small scale and it didn't turn out to be profitable (in East Malaysia, and tariffs are slightly different or were at the time anyway).A lot of cheap commercial area that are still bargains for rent I believe and some places cooler than most. You said the sound is inaudible on the ground floor so that's helpful. No complaints from top floor neighbours though?Good luck and keep the updates coming =)

### Reply 11:
Hi, thanks for your personal sharing The location at West Malaysia. Yes, Malaysia have a tropical climate everyday We did a good insulation and exhaust system in our farms to maintain a good environment for the machines. ============== Current status and progress <truncated> on 1 October 2019

### Reply 12:
I know Malaysia very well too, lived there long enough, i know some miners get free electricity , basically they steal the power line and place the farm somewhere remote so the whole farm hit ROI in 4-5 months and it does not matter what happens next, sort of a hit and run !While Malaysia is very humid all year long, temps are not high at all, in KL for example it seldom goes above 25-27 , so cooling in general is not a huge problem to deal with.There is however a problem with the Malaysian authority and police, I assume things got better now after they got rid of Najib, but I wouldn't be surprised if you had to bribe the police to run a mining business if you are foreigner, so you will most likely need a Malaysian partner whom you highly trust, and that itself is an extra cost, unless your partner will actually contribute to the business, but why would they?

### Reply 13:
Its not that hard once you learn how to control humidity. Hint: The exhaust of the miners...Another way to ignore the humidity problem entirely is going with immersion, but that's a whole bag of expertise.Ambient temp is overrated, i have seen it working with ambient 40C, so 30C ish or so is just fine. Its just a mat<rest of thread truncated>
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23214,"Date: 2020-02
Topic: Replace S15 PSU fans?
### Original post:
I know I can build a box, and likely will, but has anyone tried to replace the PSU fans to help with the high pitch whine? If so, does anyone have a recommendation for model that is quieter? Was thinking maybe a noctua branded one. Thanks for the help!

### Reply 1:
Thanks for the relpy!Even the psu fans? I know the big boys that cool the chips need to blast away, but does the psu get super hot and need a jet engine loud tiny fan?Also philipma1957, I seem to remember you have a good box design, do you have a video or pics of how you put it together? Or even more ideal the materials you used?

### Reply 2:
The PSU fans are small for space saving. They are essentially server PSUs and the fans MUST spin insanely fast to get enough airflow (and pressure) to cool the psu. Noctua fans aren't designed for that at all.

### Reply 3:
No No No No Nobuild a box or run on low speed.These fans must whale away to keep gear cool.Noctua will simply over heat the unit.

### Reply 4:
I used this material and mdfvideo below<link>

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23351,"Date: 2020-11
Topic: Canaan OS for Avalon 821
### Original post:
Hey all.Winter is coming and I'm trying to start some old gear to heat up the place. I am going a bit crazy with the os since I can't figure out how to make it work. Should be easy but maybe I'm too tired.I am downloading the os here: <link> the raspi 1 img. And then flash it on my pi and that's where I have an issue. If I understand well, the static IP of the Canaan OS is 192.168.0.100 but whatever I do I can't see it. I've used angryIP and can't see it.Any idea what I could do. Why the hell does Canaan set a static IP.

### Reply 1:
Have you set your pc to the same subnet (eg., put ip 192.168.0.101 and mask 255.255.255.0 for your pc) ?Also, would my old guide be any help? <link>

### Reply 2:
And do you have the right Pi image? There are different images for the different flavors of Pi.

### Reply 3:
Thanks guys! Was a problem with IP management. I managed to do it with one friend. Now working to underclock it for the house.

### Reply 4:
Make sure you are running the most recent version of the software and miner MM firmware then select Low Power mode and in the More Options box use --api-listen --avalon8-fan 10-30Instant quiet space heater.

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23292,"Date: 2020-06
Topic: M21s 58th error
### Original post:
Your powerline voltage is too low - the miner requires at least 208VAC and preferably the voltage should be between 220-240VAC.Only way to correct that is by using a boost transformer or an industrial-grade voltage regulator (the typical consumer-grade ones suck big time & burn out when tied to large constant loads) to raise the voltage.

### Reply 1:
you could be having a brownout due to summertime ac use in your area.do you live in usa?I can link a transformer for you.what size is your circuit breaker?20 ampor 30 ampI use a Norstar davr 5000 I purchased it from amazon in Jan of 2019I reviewed it in feb 2019it still works and is still in use. it should be just okay for your gear.I have a m21s. do you use whatsminer 5.0.2. to control it?I have a thread on the whatsminer software as it is very good to monitor your gear.my m21s is pretty power hungry.<link> review is there:that is my review from amazon. I am running an s17pro with it since last year it is still working, but it is on a 30 amp circuit that feeds 228 volts most of the timeIt does drop to 190 volts once in a while and the 2600 watt draw from the s17 pro still works okay

### Reply 2:
hi , how to fix this errorpower input current protecting, current: 16.8a, voltage: 198.0v

### Reply 3:
According to the specs on pangolinminer the M21 uses P21 power supply which needs AC200-240V, will the PSU really trip at 2 volts lower? I ran out of regulated power in one place and I run 1*s17+ and 1 S17pro on two different phases, none of them is above 220v at any given time, one moves around the low 200v to the mid 190v, and to my surprise, this time with these two gears mining operations are going perfectly fine despite the warning from Bitmain to never run them below 200v (Nobody should attempt this).The funny thing is when I tried this before on the same 17 series, they didn't want to run below 200v for long, is it possible that they reduced the sensitivity on these gears? did they improve them? maybe the firmware or complete coincidence? I am tempted to run M21s on unregulated voltage to see how it does in the mid 190s, sadly for now I can't risk it, I am willing to risk Bitmain gears because I will most likely never buy any form them again anyway, but I need the Microbt gears for testing.My guess is OP's voltage drops below 198v when the miner is running, I highly doubt 198 is low enough to trigger the PSU protection, but I am willing to hear more from NotFuzzyWarm.

### Reply 4:
it can do over current. he may have the p20. which is 3300 vs 3600devide 3300/198 = 16.6667 amps. this is technically overcurrent as the plug and the socket rate for 16 amps continuous power draw.I have 2 m20s and 1 m21sI set them all to low power because of this issue .our volts drop to 177-190 and I have the p21 psu so3600/190 = 18.9 amps and I go into protect due to over current.but 3600/228 = 15.7 amps = under 16 amps = good.so he may have an over current due to low volts.I do not know which firmware he has but. he can do the low setting.@op look carefully at this<link> bottom miner is a m21s set to low it does 44.7th at 2457 watts. note the firmware.if you need help upgrading to the firmware let me know.<link> thread shows the whatsminer tool app.

### Reply 5:
Thanks for the great explanation phill, are you sure the miner does over current protection and not voltage protection? I believe those are two different things.If the miner doesn't want to go past 16 amps, this means if you could make it run at 25th the total wattage required will be about 60w*25th = 1500w, which means even at 150v you are drawing only 10 amps and the miner will work just fine, but I highly doubt it will run at 150v, where does the math go wrong in this?

### Reply 6:
well in my case i have the newest psu and the newest firmware.the warnings i get all say current exceeded.they all show 16.7 amps.now i am 70 miles away for the farm and do all work remotely.i go to farm 1-2 months gap.I have never had a voltage warning. and i know at times the farm drops to 177-190 volts. when we get to 90 f or 32 c air temps the area does do brownouts.what usually happens varies , either we pop a few circuit breakers or some psus go into protect mode.so i clock a bit lower for the hot weather as getting power regulators for the entire farm is costly.i run four regulators they track voltage and keep four circuits at 220 volts. i usually put my four best units on them. but i now have a lot of s17pros so i can do much about 17 s17 pros if i have 4 circuits protected i have 13 unprotected s17pros.if i were the op i would downclock the m21s.

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23310,"Date: 2020-08
Topic: S15 doesn't power on
### Original post:
So I went full retard this morning my housing complex has quiet hours 2200-0600 and someone made a complaint for my miners so for the last few days now I have to unplug them at night.I have 3x S9 and 3x S15 the S9 run off 120v and the S15 on 240v. When I plugged them in this morning I plugged one S15 with the 120v plug and it turned on and I went back to bed till like 5 min later I heard the breaker trip and I went to investigate.Now my S15 will not power on at all nothing no lights or fans. Is there any cheap way to solve this? Or how do I go about trying to fix it?

### Reply 1:
Try unplugging it for 30min and then plugging it with new power cords and different power outlets (PREFERABLY 220/240v).If that does not work. Open up the machine, check if any heatsink is loose or dropped and check for burned marks on hashboards.Then, try plugging only one hashboard and turn on the unit, if that does not work, it's either PSU or control board that's dead. My guess would be PSU at that point.Also, I am not sure if you should even run S15 at 120v in the first place...

### Reply 2:
I tried waiting hours before plugging it into the proper 240v plug but nothing. You are correct the S15 does NOT run on 120v and isn't designed to hence the full retard moment this morning.I pulled it apart and it seems the S15 can't do one board at a te like the S9 because it has a metal bar the connects all the boards at once not individual plugs.Is there any user reparable parts on the PSU for the S15? I'm handy with a soldering iron, if someone knows where to check volts at I can diagnose the parts.Or where I can buy a new PSU for the S15 on the cheap preferably.

### Reply 3:
I may have one. Are you in the USA?I am driving to my farm this friday.I can check. If would be new if I have it.

### Reply 4:
Yeah I'm in CA, let me know.

### Reply 5:
I think you can still unscrew two boards from those plates and run it with one board.I had a similar problem like you where my T2TZ wouldn't run at all after one hot night where it just turned off, I opened and inspected everything and it seemed okay, until I fully opened PSU and saw broken part in it (not sure how it is called). I am still yet to repair that PSU. My electrician says that repair can cost between 1USD and 100USD (yeah, I know, rather helpful guy there!) depending on what was damaged. Might be cheaper for you to order a new PSU if phil cannot help you.

### Reply 6:
If you can disassemble the power supply try to find the fuse it might be cut off after the breaker has tripped. I don't I have this power supply and gear so if you can provide a screenshot or pic of the motherboard of PSU maybe we can find the right parts that you can check with a multitester. Start from the power cord if there is a cut line you need to replace it, if not then the issue is on the PSU internal so you will need to disassemble the unit to check the fuses and burned parts or might be some shorted capacitors.I would like to add this link below as a reference, if you found any of these on the PSU check them with the multitester.- <link>

### Reply 7:
Before try anything left the equipment disconected few hours, the caps are charge and you need left then discharge (there is always resistence(s) in the circuit that help with this), is a slow process, just test then with the miltimeter to see if there is still any voltage, don't try to discharge then making a short, you will get spark and smoke, not big but scary and will short the life of the caps.You will find the fuse inside a heat shrink, The color is black. Also, try to check the VDR and the Bridge, there is a lot of info on youtube, all you need is a Digital Multimeter.I just take this photo from a APW8 (is from a T15):

### Reply 8:
I found that fuse and as expected it was shot to shit. It says 20A 250V where can I try to find one like this? It's not like we still have radio shack and I can go browsing the drawers for fuses.I can't get the picture thing to work, but here is a pic of the fuse that I need to replace: <link>

### Reply 9:
So that will be $130-140 shipped, not sure if it's worthy for merely a 28th consuming 57w each, after the power bill S15 will make 2$ a day (best case scenario), that is close to 3 months only to ROI the PSU, and with difficulty rising those 3 months could very easily become 4 or 5, I wouldn't pay that much for an S15 PSU, if he could find one shipped for 100$ or less, that might make sense, but paying 130-140 bucks and having to wait a couple of weeks to get the PSU from china isn't something I would do.

### Reply 10:
Test the other components, when the fuse is gone, normally other components are gone (not all the time), check the Bridge rectifier, those are 4 diodes, easy to test.Those are slow-blow ceramic fuse, i just check amazon and there is plenty of those.You connect a PSU that work at 220V, in a 110V socket, it will draw more current for compensate th<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S15"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""T2TZ"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APW8"",
    ""hardware_is_owned"": false
  }
]"
23201,"Date: 2020-02
Topic: T3 57TH unit with problem
### Original post:
I have an Innosilicon T3 57TH unit that has just started having a problem.PSU shuts power off to hashboards after 90 seconds whether the boards have finished pre-heating or not.Once boards are heated to 60C if I cycle PSU the miner goes through pre-heating at 12.9V then goes to 13.6V and starts hashing. PSU shuts power to boards after 90 sec. from when PSU first sends power to hashboards.No errors on logs. All chips show up on each board.At 90 sec green light flashes on daugthercard on PSU and power goes to 0V. The PSU stays on.I have no other T3's to swap out parts with. There are 4 jumper pins on the top of the daughtercard on the PSU. Anything I can do with the pins or any other advice? I am waiting to hear back to Innosilicon to see if they can help.

### Reply 1:
try lowest settingeco I thinkif that failstry disconnecting 1 boardthat would be hard to do but if you unscrew the end board and slip in a piece of non conductive material only 2 boards would get power if that works then either the end board is defective or the psu is aging.hope this photo helpslast resort is fully remove the board. see if two boards will work.

### Reply 2:
This miner is somehow similar to Bitmain latest generation miners, most of these issues are caused by the input voltage, according to Innosilicon T3 57th specs the input voltage needs to be whiting the 210-240 volt range.I don't know how these PSUs work but I assume they have a sort of protection mode they go to if the voltage is not whiting the range for x amount of time. Another possibility is a faulty PSU. Since you have another gear to test with, the first thing I would do is try that PSU using a different socket and cable ""just in case the damage was caused by one of those"".

### Reply 3:
Do you have Inno monitor? If so, does it give you an error code?

### Reply 4:
Is that section showing some signs of burning looks like it's very dark looking could be a short somewhere there by the looks of it who ever put that stuff on the boards look terrible.

","[
  {
    ""hardware_name"": ""Innosilicon T3 57TH unit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""hashboards"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""daugthercard on PSU"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""jumper pins"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Bitmain latest generation miners"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Inno monitor"",
    ""hardware_is_owned"": false
  }
]"
23347,"Date: 2020-10
Topic: BFGMiner not working with Slushpool?
### Original post:
I recently unearthed my old Block Erupters, u2, and u3 (questionable condition). So I downloaded BFGMiner, logged into Slushpool again, set up a .bat with the whole bfgminer -o xxxx:xxxx -u xxxx.xxxx -p xxxx.xxxx.That closed out immediately after trying to start it. So I then tried the normal exe file for BFGMiner and it actually stayed open, however after putting in <truncated> for the URL, my user, and a random password, I am greeted with:Code:pool 0 JSON stratum auth failed: ] -1 -Internal Server Error, Null]I have no clue what this means or what im doing wrong. Its been quite some time since I mined last, I know that it wont really have much of an output, im mostly just doing it for fun at this point.Anyone got any ideas? Sorry if this isnt the most detailed post, its 3am and im rusty.

### Reply 1:
I never mined with these so i can't help much. i thought maybe it was a pool minimum hashrate but couldn't find anything. They do have a whole list of other stratum addresses that are location specific, you could try a few of those just to see if it resolves the issue.Side note you might just want to toss these on a solo pool as a lottery. I'm not even positive of what there are for options on the solo lottery there was CK pool, but it may not be running anymore. Kano pool had discussed launching one, but not being into the solo game myself I'm not positive. Good luck sorting out your issue.

### Reply 2:
I am rusty too, but at Slush you may need username.workername (I don't know how it handles missing worker). <link> tell ""Auth Failed"" I'd go by this first (also log in and create a worker).And you may also have surprises on low hashrate, but that may translate in more disconnection than useful hashes.

### Reply 3:
I'm not sure that your hash rate will do anything on SlushPool. I would recommend pointing the devices at <link> for lottery mining. Recently, I had 10 U1/2's (20+ Gh) running against the pool for about 2 months, but stopped after I never solved a block larger than 10 million.I know that the VH fork for CG Miner runs the U1/2's fine, but not sure about Block Erupters as I do not have any.Which OS are you running? Windows, Unix, Raspberry PI?

### Reply 4:
Auth failed usually means a mistake in the user(worker) name. It has to exactly match the login name you use in the web page.The .machinename is optional, if you use it, it shows its pretty name in the dashboard. If you omit it, the hash rate shows in a generated ""auto"" miner. It really doesn't mind if you use it or not, and the password can even be blank or the classic x, doesn't matter.Again: the username has to match exactly any caps used to login in the Slushpool web page.Because of the minimal withdrawal amount, I'm not sure its such a good idea to use this old miner with Slushpool. You should really go with <link> You don't manually create workers in Slush Pool, at least not in its current UI incarnation. the .machinename in the miner user(worker) name field will do that automatically for you.Kano pool does have a solo mode, but, you have to make an account (old accounts don't work) and configure it for solo mining. Unlike ckpool, where you just use your bitcoin address as user(worker) name and mine without needing to set up a pool account. Also dust payments like what this machine could only make, might take ages (if ever) for getting out any satoshis, not sure if he ever im<rest of post truncated>

","[
  {
    ""hardware_name"": ""Block Erupters"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""u2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""u3"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""U1/2's"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Block Erupters"",
    ""hardware_is_owned"": false
  }
]"
13663,"Date: 2020-08
Topic: CGMiner showing 1969-12-31 timestamp?
### Original post:
There is a locked thread with the same title, but I'm not sure how to resolve this. Yes, I know that Antminer U1/U2 aren't going to hit a block... I'm just messing around with a Raspberry Pi 4 and old hardware.<link> system date is set <truncated> $ timedatectl Local time: Fri 2020-08-21 23:13:15 EDT Universal time: Sat 2020-08-22 03:13:15 UTC RTC time: n/a Time zone: America/New_York (EDT, -0400)System clock synchronized: yes NTP service: active RTC in local TZ: nopi@RPi4-A:~ $ CGMiner has incorrect date:Code:cgminer version 4.11.1 - Started: [1969-12-31 <truncated> (1m):7.901G (5m):7.182G (15m):4.358G <truncated> R:0 HW:63 WU:105.2/mConnected to solo.ckpool.org diff 128 with stratum as user <truncated> 6d36968a... Diff:16.9T Started: [20:04:16.548] Best share: <truncated> management [P]ool management [S]ettings [D]isplay options [Q]uit0: ANU 0 : 250MHz | 1.446G / 1.920Gh/s WU:26.7/m1: ANU 1 : 250MHz | 2.815G / 1.967Gh/s WU:22.3/m2: ANU 2 : 250MHz | 3.451G / 2.056Gh/s WU:28.7/m3: ANU 3 : 250MHz | 1.865G / 1.961Gh/s <truncated> 19:58:46.998] Accepted 01d8ff4a Diff 139/128 ANU 0[1969-12-31 19:59:16.546] Accepted 01a248dd Diff 157/128 ANU 3[1969-12-31 20:00:54.701] Accepted fee86da4 <rest of post truncated>

### Reply 1:
Hello bmoscato,cgminer 4.11.1 got this timebug.First of all, It is not affecting your mining, just the date / time display is wrong.If you compile cgminer by yourself, you can incoperate this pull request fromVictor Huang:<link> this is fixed.Or, you use cgminer 4.10.0 where this bug does not existed.With this version you will also have no trouble using the U1/U2 just make sure that your useris in the plugdev group!Quote from the <truncated> short version:sudo cp 01-cgminer.rules <truncated> long version:On linux, the direct USB support requires no drivers at all. However due topermissions issues, you may not be able to mine directly on the devices as aregular user without giving the user access to the device or by mining asroot (administrator). In order to give your regular user access, you can makehim a member of the plugdev group with the following commands:sudo usermod -G plugdev -a `whoami`If your distribution does not have the plugdev group you can create it with:sudo groupadd plugdevIn order for the USB devices to instantly be owned by the plugdev group andaccessible by anyone from the plugdev group you can copy the <truncated> from the cgminer archive into the <truncated> w<rest of post truncated>

### Reply 2:
Thank you very much, I ended up using the version that Victor Huang compiled as you suggested. All works well now.Code:cgminer version 4.11.1 - Started: [2020-08-22 <truncated> (1m):8.863G (5m):7.408G (15m):4.272G <truncated> R:0 HW:52 WU:108.5/mConnected to solo.ckpool.org diff 128 with stratum as user <truncated> deecdac4... Diff:16.9T Started: [09:10:49.458] Best share: <truncated> management [P]ool management [S]ettings [D]isplay options [Q]uit0: ANU 0 : 250MHz | 3.640G / 2.212Gh/s WU:30.9/m1: ANU 1 : 250MHz | 1.953G / 1.909Gh/s WU:22.0/m2: ANU 2 : 250MHz | 2.159G / 1.922Gh/s WU:26.9/m3: ANU 3 : 250MHz | 2.777G / 2.057Gh/s <truncated> 09:10:49.458] Network diff set to 16.9T[2020-08-22 09:12:48.971] Accepted 2104548f Diff 1.99K/128 ANU 2[2020-08-22 09:13:23.590] Accepted 01fe8bcf Diff 128/128 ANU 3[2020-08-22 09:14:42.715] Accepted 018e14ea Diff 165/128 ANU 0[2020-08-22 09:14:56.184] Accepted d2572cd1 Diff 312/128 ANU 2[2020-08-22 09:16:39.067] Accepted 01c8959a Diff 144/128 ANU 3[2020-08-22 09:18:45.538] Accepted 0147b448 Diff 200/128 ANU 3[2020-08-22 09:19:29.286] Accepted 017a5b2c Diff 173/128 ANU 1[2020-08-22 09:19:41.507] Accepted 01880327 Diff 167/128 ANU 1[2020-08-22 09:2<rest of post truncated>

","[
  {
    ""hardware_name"": ""Antminer U1/U2"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Raspberry Pi 4"",
    ""hardware_is_owned"": true
  }
]"
13668,"Date: 2020-11
Topic: Edward Evenson – Crypto Mining Tools Podcast
### Original post:
So what this means is, currently Braiins OS+ is working with the following models:S17, S17pro, S17+, T17, T17+S9, S9j and S9i (separate image).The recent blog entry explains that there is a problem with a few controllers using the Macronix NAND chip (its garbage). Currently the firmware checks if you have that and refuses to allow installing it to NAND. Controllers with the Macronix NAND should be rare, but if you have one of those, you can only run Braiins OS+ from the sd card for the time being. Most people should have the Micron NAND which works fine.Remember that Braiins OS+ can run directly from the sd card without ever touching your NAND. The S17 family has no jumpers so it simply boots from sd when you insert it.We have already seen people reporting 29W/TH with the S17+:Using this firmware with the S17+, T17 or T17+ is considered beta. The recommendation is to just grab the sd card image and flash it with Rufus, Etcher or dd to try it. Braiins OS can always run from the sd card itself without ever installing it into the NAND, feel free to test it without worries.Within the miner's ui there is an option to install it permanently into NAND. Do this when you feel confident, or <rest of post truncated>

","[
  {
    ""hardware_name"": ""Braiins OS+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""T17+"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9j"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""S9i"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Macronix NAND chip"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""Micron NAND"",
    ""hardware_is_owned"": false
  }
]"
10894,"Date: 2020-06
Topic: S17 Pro and S19 Pro Rear Elevation CAD Data
### Original post:
Greetings, I'm awaiting the arrival of an S17 Pro but plan to eventually add a S19 Pro down the line. Right now, I'd love to find an owner of both that would be willing (or for a small fee) to whip out the calipers for an accurate rear elevation with dimensions because the goal is to model the rears in CAD for a very nerdy thermal/flow simulation. What I'd be looking for in sketch form or CAD:- Locations of all screw placements centers.- Overall Width and Height (Not sure I trust the dims on Bitmain's site)- The Width and Height of the APW9 and APW12 power supply. Along with the dimension of the gap between the case and power supply.- Overall perimeter dims. of both power supply air outlet textures. It's a big ask but the info might be beneficial to some that would like to archive the info, mod, or just satisfy our engineering sides. My email is <truncated> if you want to reach out that wayThank You,NKBTW

### Reply 1:
My gear is not accessible as it is 65 miles away.Nice idea I would love to see it when you make it.

### Reply 2:
Always thankful Philip, Couldn't think of a better place to ask. They aren't door stops yet so I understand the inconvenience of the whole idea.

","[
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    ""hardware_name"": ""S17 Pro"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""S19 Pro"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW9"",
    ""hardware_is_owned"": false
  },
  {
    ""hardware_name"": ""APW12"",
    ""hardware_is_owned"": false
  }
]"
23353,"Date: 2020-11
Topic: Learning/newbie s9 zero hash 100% discarded
### Original post:
HI people. I decided to do some learning on this topic and purchased a S9(new in box) used power supply but seems to be working. I am aware this is a old unit and i am not looking to have this thing make money other then a few dollars maybe. On to the problem. So after learning how to get this thing up and running, updating its firmware (Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018) Learning that people mess with its root password almost right away. (factory resets and fast PW change fixed that!)Joining it to a couple of different pools. Making sure its on the dmz (dont know if that matters)It sees the pools but 100% of any work it is sent is discarded the hashrate is zero. I let it run a few hours and no change other then higher discard numbers. I tried digging around on this forum but i dont know enough to narrow the problem yet. some pointers to what directions next would be good. thanks in advance.

### Reply 1:
Well it is cheap under 100 usd I hope.First off you did not come here first and you loaded the most up to date bitmain firmware .This has crippled the machine. I can't teach you about brains aftermarket firmware. I can't do a lot due to your choice to firmware upgrade without asking about it.edit:looks like you did 2018 firmware not the newest one so you may not have screwed upRant has ended. Go to gui and look for system click it then click logCode: put the log into code format we can see what the log tells us what is wrong.also screenshot the configuration page did you do all three pools?

### Reply 2:
<link> for that link. btw. Linux <truncated> #83 SMP PREEMPT Thu Jul 12 11:42:53 CST 2018

### Reply 3:
welp it was well under 100. shipping was almost as much =>if i try to copy the log here it exceeds permitted size. i dont know whats the relevant part.. finding this forum was actually quite a bit harder then i thought it was be. google keeps trying to shove me in to irrelevant reddit threads and useless bitmain support pages.<link>

### Reply 4:
Can you post an image of what you are seeing on the miner status page? It could also be helpful for you to post the Logs from the Antminer, as someone might pick the problem out from there. Be sure to post this using the code button looks like this ""#"" when you make a post. What do you see pool side? Does the pool see the miner? and is it reporting any hashes pool side.How many pools have you tried to connect to? If only one try another.Iirc your miner should still show a hashrate on it's status page as it's still technically doing the work.I just want to clarify is this ""discarded"" or ""rejected"" shares. I haven't looked at an Antminer in a while.Here is an older thread detailing ""discarded"" shares - <link> This is why we need more info from you.

### Reply 5:
The miner's hashrate is 0, this is why nothing is showing on the pool, there are many things which could cause such an issue, the first suspect would be the firmware, but please don't upgrade to the latest firmware because that will lock you out of the miner and there won't be much you can do, try a custom firmware for testing, and once everything is good you could switch back to the stock firmware.This could also be a power supply-related issue, you need to post the kernel log, ALL of it, usually the lines at the bottom are more important, but it's best if you could post all of it, try to edit your first post, and put like half there, and then put the second half in the second post.

### Reply 6:
not sure how to break up the log to get it on here even 1/8th of it is too large. could i upload it somewhere and then link it?Prior to that firmware update i did. it was running on stock firmware with the exact same results. thus the firmware update.

### Reply 7:
Maybe use something like <link> and paste the link here?It's kind of strange that your miner is creating a kernel log that can't be pasted in two posts here, it's probably repeating the same error endlessly and that's why.What is the current firmware version? if the firmware upgrade didn't fix it, then it could be ""very likely"" that the PSU is bad, however, the kernel log will give us more details on the issue.

### Reply 8:
Code:read failed on Chain[5] Chip[62] middle Temp old value:0Code:read failed on Chain[6] Chip[62] middle Temp old value:0Code:read failed on Chain[7] Chip[62] middle Temp old value:0What these 3 lines of the kernel log are saying is that the temp sensors on all three boards are bad, while that is a possibility, it's very, very unlikely especially since you mentioned that it was a brand new gear, in most cases when all temp-sensor fail at once, it means the PSU is bad, so you need a PSU replacement, that is bad news, but also good news since PSUs are dirt cheap.This is the Kernel Version, the firmware version is beneath that, labeled as ""File System Version"" it usually starts with a day of the week like Fri / Mon and end<rest of thread truncated>
","[
  {
    ""hardware_name"": ""S9"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""used power supply"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""PSU"",
    ""hardware_is_owned"": false
  }
]"
10867,"Date: 2020-02
Topic: My Pangolin Nightmare now halved but persists...
### Original post:
I'm done with Pangolin and Microbit...Absolute Junk and ridiculous return costs and lousy follow up service..My Units have used bodies that still have glue from removed stickers on them and other obvious signs of use and wear.My nightmare continues and now just more money out the window for ZERO BTC mining done.Oh and the ONLY way to get tech help is through Telegram and give them remote access to your comp via TEAMVIEW2 MAJOR security risks not to mention you must download and install and learn how to use both..And co-ordinate a time to be online with someone 12 times zones away during THEIR working hours.Even then they will only tell you what you already know...THE UNIT IS DEAD and you must return the WHOLE device. Lousy <truncated> advertise low power setting...there is even an option in the software...BUT it's NOT <truncated> that was the ONLY REASON I BOUGHT FUCKERS was for the high efficiencyThe units that do work have no fan control just always 100% regardless of chip temps...and they have lousy cooling they get HOT fast and are VERY LOUD. They arrived a week lateAny chance for profit has been wiped out completely....I will never even come close to earning enough to pay for <rest of post truncated>

### Reply 1:
Over 6 months now and I still have one dead M-20 unit....they have not replied to emails for over 1 month. while on telegram no reply since I notified them the diagnosis and instructed repairs of board replacement did not solve the problem the unit is still defective. 2k U.S. rip off for ZERO return.

### Reply 2:
That sucks. Bitmain is just as bad for warranty IMO although I've never dealt with them for DOA. My Z11 had the middle hash board fry in less than two weeks. I couldn't even pay them for a replacement board and have been running it with two boards since. The only company I've ever had good luck with sending me replacement parts for free under warranty was Canaan.

","[
  {
    ""hardware_name"": ""Pangolin"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Microbit"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""M-20"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Z11"",
    ""hardware_is_owned"": true
  }
]"
23313,"Date: 2020-08
Topic: S17 APW9+ FAN problem
### Original post:
Did you measure the voltage in the fan connector in the psu? What was the result?Maybe the problem is not in the fan, but in the psu circuit.

### Reply 1:
Hi Guys,We have a few Bitmain S17 units and the 15K RPM FANs in the PSU started to die (~ 1y old). No problem (we thought). We ordered a bunch of 40x40x28mm 12V ~same FANs and installed them (originals and the replacement are both 12V are 2 wire no PWM type).And here comes the surprise: Original FAN works from a given FAN header (inside the PSU). Replacement FAN doesn't work from FAN header (inside the PSU) (several PSUs and FANs tested).But the replacement FANs do work from: 12V test PSU; from the 12V coming from the APW9 PCI-E connector.Voltage measured on the FAN connector ~12V. Voltage measured on wire of the new FAN, ~12V. So the correct (looks correct) 12V is reaching the new FAN, but the FAN just won't work at all.Now I am stunned. How can a simple two wire FAN not working if correct voltage applied (and working from the same PSU's PCI-E 12V)?Any idea would be welcomed as these are relatively hard to come by and not that cheap either.Original FAN: Nidec UltraFlo <truncated> FAN: Sunon PDM1204PQBX-A Double Ball Fan 12v 8w Fan <truncated> Please also advise if you know any online store selling two wire 40x40x28 15k RPM fan's and not shipping from China.

### Reply 2:
The one that you bought should work, is pretty equivalent in terms of <truncated> First graphic is the Sunon specs, second one the original Nidec.Why 15k RPM? Afaik the 17 series fans work @ 7k RPM at max.

### Reply 3:
We found the problem finally. The FAN pins (two pin one way header!) 12V PINs inside the APW9+ are reversed on the PCB. The original FAN works with the reverses polarity, but the new fan only works if the polarity is correct. Weird.

### Reply 4:
Good to know, thanks for sharing!

","[
  {
    ""hardware_name"": ""Bitmain S17"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""15K RPM FANs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""40x40x28mm 12V FANs"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""APW9 PCI-E connector"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Nidec UltraFlo FAN"",
    ""hardware_is_owned"": true
  },
  {
    ""hardware_name"": ""Sunon PDM1204PQBX-A Double Ball Fan 12v 8w"",
    ""hardware_is_owned"": true
  }
]"
23337,"Date: 2020-09
Topic: S9 6 hashboard mod - parts sourcing thread
### Original post:
Hi All, I looked through the following threads: <link> to do the added connectors mod as well. <link> that photo looks like 4k7 resistors, either 0402 or 0201, looks like 0201 to me I can't find the part number for the connector though. Thread above narrows it down to this one:<link> these the correct connectors? Best,ark02

### Reply 1:
Pretty hard to tell, all I know is that they are 9*2 (18-pin) connectors, zeusbtc sells them for 50 cents, how much did you get them for on Ebay?Why not get the 4k7 / 4700-ohm resistors as they suggested since those are the once used by Bitmain anyway? is it hard to find? they seem pretty cheap on Amazon. I am not sure why are you trying to risk trying something different, would love to know why.I also think NotFuzzyWarm or HagssFIN will assist you best on whether or not you can other resistors and on what they actually do.

### Reply 2:
Hey thanks for the reply!I ended up paying a few $ for the connectors on ebay, really absurd pricing. They're some sort of JST connectors (PR or something?)I did not know the bitmain boards used the 4.7 / 4.9 k resistors at the time, I ended up buying those and everything is working great!

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23258,"Date: 2020-04
Topic: Used Antminer S17 Pro - Having issues and PO finally said he had it plugged 120v
### Original post:
I just bought a used Antminer S17Pro and it shows a Red Fault light. When you plug it in it goes to maximum fan speed. I'll pull the logs as the controller still works and shows a socket connection failed message in the HW field. The previous owner finally told me that he had it plugged in his garage on 120v for a few days. My question is that what kind of damage does this do, I haven't plugged it into my 240V yet, as I'd like to know what damage was done before powering it up again.

### Reply 1:
The only possible damage would have been to the PSU with blown input rectifiers or soft-start thermistor. Frankly I am surprised the PO was able to run it at all (did they say it ran?) as the PSU should have shut down/not started at that low voltage. I'd plug it into 240VAC and see if it runs.

### Reply 2:
Even if the seller says it worked i wouldn't believe them, i have personal experience with these gears, anything below 200v it starts acting, maybe 198v and it shuts down all hash boards, i highly doubt his gear would be any different.Your only option now is to plug it into a 200-240v socket and see how it does, it is a 50/50 chance i'd sat,it will either work just fine or you will need a new psu, it is highly unlikely that any other components got toasted in the process.

### Reply 3:
Many thanks for the information. I'll post my findings. To answer your question. YES, it does run on 120V, but he was able to for about 4 days.

### Reply 4:
Like <truncated> need to be at 210 to 240 volts to run and actually hash

### Reply 5:
Do you trust the seller's words like 100%? I hope you don't because I am pretty confident he is not telling you the truth, I have at least one the following gears.T17T17eS17 proS17+NONE of them would work without a voltage regulator and the voltage hardly dips below 190v, so even 195v was not enough, let alone 110-120v, so it's one of two things, either he is not telling you the truth, or he has gotten a magically different S17 pro that somehow manages to run on a 120v socket, and I highly doubt the latter, unless by ""run"" he means fans spinning, LEDs are on but not exactly hashing.

### Reply 6:
Does it fail with 208v? (two 120v hot from different phases) Did you ever try?

### Reply 7:
Ok, Got it setup on 240v and she powers up but I have an error:Code:Hardware Version: Socket connect failed: Connection refusedHere is the log:Code:Booting Linux on physical CPU 0x0Linux version <truncated> (lzq@armdev2) (gcc version 4.8.3 20140320 (prerelease) (Sourcery CodeBench Lite 2014.05-23) ) #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018CPU: ARMv7 Processor [413fc090] revision 0 (ARMv7), cr=18c5387dCPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cacheMachine model: Xilinx Zynqcma: Reserved 16 MiB at 0x0e000000Memory policy: Data cache writeallocOn node 0 totalpages: <truncated> node 0, pgdat c0b39280, node_mem_map cde10000Normal zone: 480 pages used for memmapNormal zone: 0 pages reservedNormal zone: 61440 pages, LIFO batch:15percpu: Embedded 12 pages/cpu @cddf1000 s19776 r8192 d21184 u49152pcpu-alloc: s19776 r8192 d21184 u49152 <truncated> [0] 0 [0] 1 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 60960Kernel command line: mem=240M <truncated> <truncated> root=/dev/ram rw earlyprintkPID hash table entries: 1024 (order: 0, 4096 bytes)Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)Inode-cache hash table entries: 16384 (or<rest of post truncated>

### Reply 8:
Right now the S17 Pro seems to be going through some sort of diagnoses loop. Where the machine boots with the Hardware Version Error Socket connect failed: Connection refused and the Kernel only shows an warning:Code:nand: WARNING: pl35x-nand: the ECC used on your system is too weak compared to the one required by the NAND chipBad block table found at page 131008, version 0x01Bad block table found at page 130944, version 0x01It cycles the fans through out the process of booting and in the end it starts stepping (systematically increasing the fans and the heat of the asics) over a period of time ~10-15minutes then it seems to reboot. Because when I check the kernel logs again it has cleared and shows that it had rebooted.So, to be verbose and for any future people who have had a machine plugged into 120V. So far the fact that the S17 Pro boots and kernel log doesn't show any major errors, the lower voltage is not a critical event where the miner ends up with major damage. Now, its just finding out this issue. I have downloaded the latest firmware from Bitmain (<link> the top one for the version V12.25 <truncated> and done many resets to default, with no success. The only other error<rest of post truncated>

### Reply 9:
You have read the various about Antminers and esp. one regarding the S17 to know that all Antminers go through an autotune process when they are powered up <rest of thread truncated>
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23219,"Date: 2020-03
Topic: And one more S15 question...
### Original post:
I'm getting 1960w draw at the wall running at 27.5TH/s. That seems pretty high to me. I thought these pulled like 1600 - 1700w. Anyone else seeing this issue, or am I way off base. Miner is running in a wide open area in my basement so its around 60 degrees right now in the cold NE winter!

### Reply 1:
can you put it on low? i think i would do 900 watts and 18.2 thi would be interested to see the numbers you get.

### Reply 2:
low power:1050w and 17.5TH/s

### Reply 3:
So it think it was the ""cold protection."" Looking at the hashing in full speed, several of my pcb readings were sub 25, I read in pother threads that volatge will be increased to warm them up, I wonder if in low power, the boards get warm enough and it drops voltage, thus dropping down to the 925w

### Reply 4:
Do you know of anyway to control the fans? On full speed, the fans ramp up to 5000 rpm and my pcb boards stay below that 25 threshold, I think that may be a reason why I end up over 2000w on full speed.

### Reply 5:
Okay compared to mine it runs poorly.an extra 150 watts and .5th lessI kind of would touch 50 watts a th while you are doing 60 watts a th.I have seen meters be 50 watts different at 1000.so I could be 950 watts and 18th = 52.78 wattsyou could be 1000 watts and 17.5 th = 57.14 wattsLastly I measured a 90 day old machineYou may be measuring a 400 day old machineOf course silicon lottery is a factor but it does look like yours is ay least 5% worst then mine was when I measured it a year ago.I can check my hashrate for it in 2 minutesit is 27.32th over the last day on high.I do not have ability to check power use unless I drive up to the site.I liked this machine it was a good home miner on low setting.here is a screen shot of it running

### Reply 6:
Yep... I think I lost the chip lottery. I used the same meter for all of my l3+ which run pretty spot on to spec. I'm a little disappointed as I am just getting back into btc mining after I have been ltc mining for years. Oh well. That the way it goes! Thanks for all the replies!So this is super weird.... After running in low speed mode for about 20 minutes, wattage dropped to 925w which is right where I'd expect it and the hash speed didn't change!Further weirdness.. when I switched back to normal mode, it didn't speed up the fans, so I was hashing at 28th/s pulling 2000w and my chips got super hot, pretty quickly! When a few got to 110c I shut it down (sleep mode). The fans never budged above 2500 rpm. What the heck?!?! Once it cooled down I pulled the plug and will investigate furthe later today when I have time.

### Reply 7:
Hmmm weird but worst case mine it on low as 925 watts and 17.5 th is pretty good. 52.87 watts a th. and fairly quiet.

### Reply 8:
that makes sense and you ended up very close to my 50 watts a th once boards got warm.

### Reply 9:
Based on your reply on my topic you seem to have fixed the fans issue:Did you see any improvements in terms of efficiency? I have never actually bothered measuring the fans power consumption, but i remember someone else saying that running the fans at higher RPM will make the miner consume less power due to the fact that the hotter the miner runs the more power it consumes, and if that is true then lowering the fan speeds will only make your miner suck more power, please confirm.

### Reply 10:
There is a sweet spot, especially on the s15, not sure about other miners...high fan = too cold and voltage jumps to warm chips, extra juice for fans and voltage = real bad (and dumb... what are they worried about at 25 C?)low fan = too warm, chips run hotter but at lower voltage at least but do consume more juice, lower fans a little less juice = okmedium fan = boards stay warm enough to drop voltage, but also dont waste juice on fans = bestAlso I saw power at the wall jump 60-70 watts when the fans cycled from 3300 rpm to 5040 rpm.Also, the html fan trick for s9 does set fan % for s15, but there stills seems to be some over ride built in as the fan every once and a while cycles higher. Its better than just auto but still not full control... the chips and boards aren't even close to max temp when it cycles up.when is that custom firmware gonna be ready

### Reply 11:
Ist me , so is true, but, on the S9K (and other, probably same at S15), if i run this with lower fan, the temp up to 95 - 100, and miner set voltage at LOWER, so 9.70V ... If i turn FULL SPEED fan, temp is very low, but miner, after arround 3 cycle of 30min, set voltage at FULL ! so 10.10V !!! is totaly stupide !But, i understand now, is only for FIXED efficiency ! shitmain ... if you run at 0 or 40 degr ambiant temp, you give same power at wall (arround)And for power conssum by fan, at 20% or 100% , with 4 fan, de diference is arround 150W (high depend by fan models).

### Reply 12:
Yes, it was you, sorry I forgot , I understand and based on that one should really test every miner model individually t<rest of thread truncated>
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23284,"Date: 2020-06
Topic: Innosilicon Miner not connecting to INTERNET
### Original post:
Have you tried to replace the ethernet cable with a known working ethernet cable?If not try to replace it first if not working try to check the ethernet socket and try to clean it with brush and thinner(Laquer flo) then check it again. If it doesn't work try to reset the miner then also reset the modem then put the ethernet cable to another socket on the modem and then test it again. If it still doesn't work try to use a router let see if it won't work and then update here.

### Reply 1:
Suddenly Miner not connecting to Internet, Please need helpDevice has green light glowing but in modem its not identifiying<link>

### Reply 2:
This seems like a control board went bad, I am afraid there isn't much that can be done about it.If it has an Ip-report button you should try it, also if there is a way to Sdflash it that might fix it, meanwhile look for a spare control board, you can buy a used one for cheap.

### Reply 3:
Thanks for replyingI have tried ethernet cable with a known working ethernet cable - No SucessReset the miner then also reset the modem then put the ethernet cable to another socket on the modem and then test it again - No Sucessused a router - No Sucess<link>

### Reply 4:
Look at the control board. It's full of dust...Try the mikeywith suggestion first, and then if the issue persists, do this below.Clean the control board, then check the parts near the ethernet socket and, maybe there are some parts with rust and corrosion clean them with thinner. If it can't remove, try to resolder them. Use a multimeter to check the ethernet terminal and maybe it's shorted. If you have Hotair(BGA) you can replace the ethernet socket with the new one.Also, try to make a crossover cable and use it as your ethernet cable.If all of them don't work, your final solution is to replace it with a working control board.

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23288,"Date: 2020-06
Topic: Antminer T9+ Low hashrate problem!!!
### Original post:
Your temp sensor has failed. You can play with firmware you could get lucky please put your log in code. I DONT think braiins os does t9 let me check just went to braiins website they work on s9.

### Reply 1:
Edit the post and use the code function to paste the kernel log, this post looks messy.Anway, the answer is <truncated> T9+ try get asic num for the 1 <truncated> Chain[J2] has 0 <truncated> T9+ try get asic num for the 2 timeJ2 (Usually the middle board) is toasted, while this kernel log tells you where the problem is, it's not very accurate, it doesn't really mean that all chips on this chain are gone, it could be a single chip which causes the whole chain to disappear that's because of how these hash boards are designed, it could also be a power module, or any other component, troubleshooting and fixing this kind of an issue will cost you more than what the board actually worth, so usually the best way to deal with this is by sending it to the trash.There is however a small possibility that the PSU is faulty and it can't power all boards, to troubleshoot this, disconnect the other chains, keep chain 2 only, use a different ribbon and 6pin cables on chain 2 then power on, if the same issue appears then the board is dead but, if something changes then it's either a bad PSU or a ribbon cable.

### Reply 2:
Hello everybody!! i have a low hashrate problem with my Antminer T9+!!2, 9 10 chains (J2) dont work. So, the miner works at 7.5 TH/s instead 0f 10.5TH/s. I reboot the miner... then load the last firmware and the problem persists.Now i overcloacked the working chains to 631 to gain 1 TH/s.The problem strarted 3 days ago...in normal conditions..(I note that J2 board is detached, its move a lot)kernel log <truncated> bmminer not found, restart bmminer <truncated> This is user mode for <truncated> Detect 512MB control board of <truncated> Miner Type = <truncated> Miner compile time: Tue Jul 30 20:56:54 CST 2019 type: Antminer <truncated> miner ID : <truncated> Checking <truncated> get fan[4] <truncated> get fan[5] <truncated> get fan[4] <truncated> get fan[5] <truncated> get fan[4] <truncated> get fan[5] <truncated> chain[1] PIC jump to <truncated> Check chain[1] PIC fw <truncated> Chain[1] read_freq_badcores : 0x7d 0x33 0x33 0x33 0x11 0x33 0x33 0x3e 0x57 0x00 0xff 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x3e 0x57 0x00 0xff 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e 0x3e<rest of post truncated>

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10896,"Date: 2020-07
Topic: Bitmain to release S17E 64TH
### Original post:
Good glad I waited a bit to order.

### Reply 1:
Yeah I got my m20s coming but new bitmain would do something like this.

### Reply 2:
whats price estimates? 3.5k?

### Reply 3:
On their twitter account, just 10 minutes ago, Bitmain announced yet another ""improved"" gear with 64th and about 2880w, that is 45w per tera hash, which is almost exactly the same as the S17 pro running on Turbo mode, it seems like they added more chips and gave it a different name, but we can only be sure after they do release it, the Low power mode on this thing might be more efficient than the S17pro which is 36w per TH.source: <link>

### Reply 4:
My guess would be $3650 based off the price of the S17 53TH and 1 month earlier delivery. Looks like we'll find out on Monday.<link>

### Reply 5:
Well coins are edging close to 11,000. If we get a coin push to 11 or 12 over the weekend I could see them wanting close to 4000.

### Reply 6:
gunna be rough with trump tax

### Reply 7:
I think over $3k would be too high considering the M20S are under $3k at a slightly higher hash rate.

### Reply 8:
looked like efficiency was the same? im thinking 30xx watts @45j/th. It helps bitmain that they are a visible company with clear (relatively) processes for their products, quality and efficiency aside.

### Reply 9:
They are trying to pre-empt M20S.Hopefully, this would mean lower prices.I looked at the numbers and there is NO way for any of these miners to return more btc than you spent in the first 12 mo, maybe even 18 mo IF your cost is 9-11c/kwh.They have to be robust enough to work for at least 24 mo, maybe more for you to break even in btc.Of course, depending on bitcoin $$ price (if it would rise), you MIGHT get $$ profits sooner.

### Reply 10:
cryptominerbros list it for $3,199.00, but price will change after relase from Bitmain.M20s is on sale on whatsminer.net, but only 40 USD under normal price .In fact Bitmain cant lower the price than whatsminer.If tomorrow is a bullish mood, the price is higher than if bitcoin falls extremely low tomorrow.I cancel my M20s order. Wait for cheap used S17 pro 50/56 TH/s.Maybe in 2 Months you become 0,5 - 0,7 BTC for this actualy gear price.

### Reply 11:
Does Bitmain usually have a minimum order quantity for first batch runs? And still no pricing? They come out tomorrow!

### Reply 12:
Not that I'm aware. It's usually more an issue just trying to get an order in at a time like this. I think you have to set up notifications on their twitter to get the updates right away. I imagine pricing will go up a few hours before the sale is supposed to start.

### Reply 13:
Was holding off from s17pro and now it seems to be worth it with this new one coming out and being delivered one month earlier than the s17pro in December; hmmm another blow to people who have preordered...My worry is: depending on what batch you order will they increase the price? Or will they be fair and leave all 3 batches (3 days apart) at the same price?

### Reply 14:
factor in difficulty adjustments and ROI window becomes even wider. no risk on manufacturers and all on you/us as miners. BTC halving+next gen gears soon to drive difficulty much higher...don't be suckers, prepare for the coming bloodbath!!

### Reply 15:
what screws it all up is the tariff's though - Bitmain has told me that they can ship from Malaysia but the MOQ is way out of my price range. I will be most likely hoping to get my hands on T15's from within the US where I dont need to run two damn lines to the PSU - another expense which forces me to either have half the miners or leaves me needing to install more outlets - with only 20 outlets currently I can handle 20 T15/S15 and only 10 T17/S17 If I can find the 15's at a decent enough price it will more than make up for the reduction in hash rate. now someone please buy my 13 S9's for 3k a piece lol

### Reply 16:
Group buy! 100 units ain't that bad I'd buy 5 depending on the price.I would say I would help organize a group buy. But I know the headache would suck and the receiving and reshipping and what not. Would have to tag $150 in machine to receive and reship them. Plus god knows the taxxes owed from the tariff.

### Reply 17:
This is not how you compare gear prices, besides quality and the other obvious factors,there are two major factors you need to consider when making such a comparison.1-Price per Terahash2-Watts per TerahashNow depending on a few factors , power consumption in many cases is the most important factor and based on that, and assuming the S17E does 64th at 2880w i see no reason why it shouldn't be selling for 3.5k or even 4k despite the fact that the M20s does sell for a lot cheaper, those 500w difference are worth a lot to many people , and to be honest 64th at 2880w is a freaking beast, I doubt any other company will get to that efficiency by year end.Another reason is that to me, bitmain in the mining industry is like App<rest of thread truncated>
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